CN212090028U - Multifunctional nursing bed - Google Patents

Abstract

The utility model discloses a multifunctional nursing bed, which comprises a bed body (1), a first roller mechanism (2), a second roller mechanism (3) and a third roller mechanism (4); the first roller mechanism (2) comprises a first roller component (21), a first coarse roller (22) and a first bracket (23); the second roller mechanism (3) comprises a second roller component (31), a second coarse roller (32) and a second bracket (33); the third roller mechanism (4) comprises a third bracket (42) and a third coarse roller (41); the lower end of the third support (42) on one side of the bed body (1) is connected with a sliding guide rail (43) in a sliding mode, and the lower end of the sliding guide rail (43) is fixedly connected with a lifting mechanism (44). The multifunctional nursing bed is convenient to operate, simple, practical, comfortable and strong in functionality.

Description

Multifunctional nursing bed

Technical Field

The utility model relates to the field of medical equipment, concretely relates to multifunctional nursing bed.

Background

The aging of population has become a major social problem worldwide, and China has entered the ranks of the population aging countries in advance due to birth control and other reasons. The elderly are mostly suffered from chronic diseases such as hypertension, cardiovascular and cerebrovascular diseases and the like, and the diseases are easy to cause hemiplegia of the elderly due to apoplexy. Because the activities of the paralyzed patients are limited, the daily nursing work of the paralyzed patients is difficult, and the paralyzed patients can be helped to perform the activities of relieving the bowels, rising and lying and the like timely and weekly, which is a necessary condition for promoting the early rehabilitation of the patients.

With the rapid development of hospitals, medical care institutions, and home care conditions, a care bed for use with respect to patients is becoming more and more popular. Most of the existing nursing beds have single function and can only support the back of a patient; when a patient lies in bed, the patient can only be in the same body position for a long time, namely, the patient lies flat, diseases such as bedsore are easy to generate, the body function of the patient is further degraded, meanwhile, a large workload is brought to nursing staff, and the labor intensity is high; meanwhile, the existing nursing bed does not have the function of leg bending, because the patient lies in bed for a long time and bones and joints are stiff, if the back of the patient is only supported without bending the legs, the back and the legs of the patient are tight, and a serious patient can cause joint damage, so that the comfort of the patient is not facilitated. The patient is transferred from the nursing bed to the wheelchair, so that the life of the patient is convenient, the mood is pleasant, and the rehabilitation of the body is more facilitated.

SUMMERY OF THE UTILITY MODEL

Problem to above prior art exists, the utility model aims to provide a multifunctional nursing bed to solve patient's long-term bed and can't control and stand up, the shank bends to stretch, the health removes scheduling problem, this nursing bed is effectual combines bed and wheelchair simultaneously, provides good travelling comfort and convenience for patient, has alleviateed nursing staff's work load and intensity of labour.

The purpose of the utility model is realized through the following technical scheme:

a multifunctional nursing bed is characterized in that: comprises a bed body, a first roller mechanism, a second roller mechanism and a third roller mechanism;

the bed body is transversely provided with a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod from the bed head to the bed tail; the first roller mechanism is fixed on the first supporting rod and the second supporting rod; the second roller mechanism is fixed on the third supporting rod and the fourth supporting rod; the third roller mechanisms are arranged on two sides of the bed body; one side of the bed body is provided with a rectangular positioning hole for connecting an external wheelchair or an operating bed;

the first roller mechanism comprises a first roller assembly, a first coarse roller and a first bracket; the first roller assembly is arranged in the transverse middle of the bed body and comprises two first thin rollers and two first fixing frames, the two first fixing frames are fixedly connected with the upper ends of the first supporting rod and the second supporting rod respectively, and the first thin rollers are arranged between the two first fixing frames and are rotatably connected with the two first fixing frames; the first thick roller is arranged on two sides of the first roller component, two ends of the first thick roller are rotatably connected with the first support, and the first support is fixedly connected with the upper ends of the first support rod and the second support rod respectively; the first thin roller and the first thick roller are vertically arranged in the bed body;

the second roller mechanism comprises a second roller assembly, a second coarse roller and a second bracket; the second roller assembly is arranged in the transverse middle of the bed body and comprises two second thin rollers and two second fixing frames, the two second fixing frames are fixedly connected with the upper ends of the third supporting rod and the fourth supporting rod respectively, and the second thin rollers are arranged between the two second fixing frames and are rotatably connected with the two second fixing frames; the second thick roller is arranged on two sides of the second roller assembly, two ends of the second thick roller are rotatably connected with the second support, and the second support is fixedly connected with the upper ends of the third support rod and the fourth support rod respectively; the second thin roller and the second thick roller are vertically arranged in the bed body;

the third roller mechanism comprises a third bracket and two third thick rollers, the two third thick rollers are respectively arranged on two sides of the bed body, and two ends of each third thick roller are respectively in rotating connection with the third bracket; the lower end of the third support close to one side of the rectangular positioning hole is connected with a sliding guide rail in a sliding mode, and the lower end of the sliding guide rail is fixedly connected with a lifting mechanism; the bed body far away from one side of the rectangular positioning hole is provided with a protective baffle, a third roller mechanism at the same side is embedded into the protective baffle, and the third support is fixedly connected with the bed body.

For further optimization, a fifth support rod is transversely arranged on the bed body; the first support rod is not in contact with the bed body and is connected with the second support rod through a connecting rod; the second supporting rod, the fifth supporting rod and the bed body are connected in a rotating mode, the fifth supporting rod is arranged at the tail of the bed body, and the third supporting rod and the fourth supporting rod are fixedly connected with the bed body.

Further optimization, the number of the first fine rollers and the number of the second fine rollers are 4-8; the number of the first coarse rollers is two or four, and the number of the second coarse rollers is consistent with that of the first coarse rollers; the number of the third thick rollers is two.

Further preferably, the diameter of the first thin roller is consistent with that of the second thin roller, and the diameter of the first thick roller is consistent with that of the second thick roller; the diameter of the third coarse roller is not less than 1.5 times of the diameter of the first coarse roller, and the diameter of the first coarse roller is not less than 1.5 times of the diameter of the first fine roller.

For further optimization, the nursing bed further comprises a leg bending plate; one end of the curved leg plate is fixed on the fifth supporting rod.

For further optimization, the nursing bed further comprises a back lifting and leg bending mechanism; the back lifting leg bending mechanism is arranged below the bed body and comprises a support frame, a balance rod, a back lifting rod and a leg bending rod; the support frame is arranged at the bottom of the bed body; the middle part of the balancing rod is rotatably connected with the supporting frame, one end of the balancing rod is rotatably connected with one end of the back lifting rod, and the other end of the balancing rod is rotatably connected with one end of the leg bending rod; the two connecting rods are connected with one sliding rod in a sliding manner; the other end of the back lifting rod is fixedly connected with the sliding rod, and the other end of the leg bending rod is fixedly connected with one end, far away from the fifth supporting rod, of the leg bending plate.

According to further optimization, the nursing bed further comprises a wheelchair mechanism, the wheelchair mechanism is an electric wheelchair, and rectangular positioning pins are arranged on the side face of the wheelchair mechanism corresponding to the rectangular positioning holes; the wheelchair mechanism comprises a back plate, a seat plate, a travelling wheel and a wheel axle bracket assembly; a first roller belt mechanism is longitudinally arranged in the back plate, a second roller belt mechanism is longitudinally arranged in the seat plate, and the patient is stably transferred to the wheelchair from the nursing bed through the rolling of the first roller belt mechanism and the second roller belt mechanism; the back plate is rotatably connected with the seat plate; the two walking wheels are connected and fixed at the bottom of the seat plate through the wheel axle bracket component.

For further optimization, the bed body also comprises a headboard and a bed foot support; the headboard is used for preventing the pillow from falling off; the bed legs are supported and installed at four corners of the bottom of the bed body.

The connection parts of the first thin roller, the second thin roller, the first thick roller, the second thick roller, the third thick roller, the sliding guide rail and the sliding rod and the connecting rod are all provided with driving motors and are controlled to rotate through the driving motors, the connection part of the balancing rod and the supporting frame is provided with a rotating motor and is controlled to rotate through the rotating motor, and the lifting mechanism is connected with a hydraulic device and is lifted through a hydraulic device controller; the head of a bed of the bed body sets up control panel, driving motor, rotation motor, hydraulic means with control panel electric connection.

Further optimizing, in order to ensure that the wheelchair mechanism accurately finds the rectangular positioning hole, an infrared sensor is arranged on the rectangular positioning hole and used for identifying the rectangular positioning hole; the rectangular positioning pin and the rectangular positioning hole are provided with self-locking devices, so that the wheelchair mechanism is prevented from moving when a patient is moved; the self-locking device is electrically connected with the control panel; the infrared sensor is connected with the control panel through Bluetooth.

The utility model discloses has following technological effect:

the utility model realizes the translation of the patient on the nursing bed through the first roller mechanism and the second roller mechanism, thereby facilitating the movement of the patient and preventing the patient from lying on the couch for a long time at the same position; simultaneously through the cooperation of first cylinder mechanism, second cylinder mechanism, third cylinder mechanism (first thin cylinder and the thin cylinder of second, the thick cylinder of first thick cylinder and second, the cooperation of the thick cylinder of third), the difference in height through three kinds of cylinders realizes that patient stands up about, avoids the production of diseases such as bedsore, adopts cylinder mechanism to replace push rod side-turning mechanism, patient's landing or the risk of rubbing skin on the bed body when having effectively avoided standing up, and is safer, comfortable. Through the cooperation of elevating system and slide rail mechanism, can remove at any time, go up and down third cylinder mechanism to realize third cylinder mechanism top surface and first cylinder mechanism, the coplane of second cylinder mechanism top surface, reach and translate patient from the bed body to other like on wheelchair, the operation table the purpose.

This nursing bed passes through first bracing piece, second bracing piece, fifth bracing piece and first cylinder mechanism, bent leg board, plays the cooperation of back of the body bent leg mechanism, has realized that patient when playing the back, the shank carries out the bending of certain angle, avoids patient to lead to the joint stiff after long-term lying for a long time, when avoiding only playing the back and not bending the leg simultaneously, muscle, joint are tight. Through the cooperation of the wheelchair mechanism and the nursing bed, the body of the patient can be moved at any time, the wheelchair is safe and convenient, the patient is prevented from being bedridden for a long time, and the wheelchair is favorable for physical and psychological health of the patient.

The utility model discloses rational in infrastructure, convenient to use realizes playing the back, standing up, the health removes, the motion of leg bending through cylinder and push rod, but the dynamics of accurate control motion, and the action is soft, improves user's comfort level, greatly reduced nursing staff's intensity of labour, but wide application in nursing apparatus technical field.

Drawings

Fig. 1 is a schematic structural view of a multifunctional nursing bed in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the first roller assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a second roller assembly according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 1.

Fig. 5 is a schematic connection diagram of the first support rod, the second support rod, the connecting rod, and the sliding rod in the embodiment of the present invention.

Fig. 6 is a sectional view taken along line B-B of fig. 4.

Fig. 7 is a sectional view taken along line C-C of fig. 4.

Figure 8 is a schematic structural view of a wheelchair mechanism in an embodiment of the present invention.

Fig. 9 is a cross-sectional view taken along line D-D of fig. 8.

Wherein, 1, a bed body; 11. a first support bar; 12. a second support bar; 13. a third support bar; 14. a fourth support bar; 15. a fifth support bar; 16. a protective baffle; 17. a headboard; 18. a bed leg support; 19. a connecting rod; 191. a slide bar; 2. a first roller mechanism; 21. a first roller assembly; 211. a first fine drum; 212. a first fixing frame; 22. a first coarse drum; 23. a first bracket; 3. a second roller mechanism; 31. a second roller assembly; 311. a second fine roller; 312. a second fixing frame; 32. a second coarse drum; 33. a second bracket; 4. a third roller mechanism; 41. a third coarse drum; 42. a third support; 43. a sliding guide rail; 44. a lifting mechanism; 5. a leg bending plate; 6. a back lifting and leg bending mechanism; 61. a support frame; 62. a balancing pole; 63. a back lifting rod; 64. a leg bending rod; 7. a wheelchair mechanism; 71. a rectangular positioning pin; 72. a back plate; 721. a first roller belt mechanism; 73. a seat plate; 731. a second roller belt mechanism; 74. a traveling wheel; 75. an axle bracket assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1-9, a multifunctional nursing bed is characterized in that: comprises abed body 1, afirst roller mechanism 2, asecond roller mechanism 3, athird roller mechanism 4, aleg bending plate 5, a back liftingleg bending mechanism 6 and awheelchair mechanism 7;

thebed body 1 is transversely provided with a first supportingrod 11, a second supportingrod 12, a third supportingrod 13, a fourth supportingrod 14 and a fifth supporting rod 15 from the bed head to the bed tail; thefirst roller mechanism 2 is fixed on thefirst support rod 11 and thesecond support rod 12; thesecond roller mechanism 3 is fixed on athird support rod 13 and afourth support rod 14; thethird roller mechanisms 4 are arranged at two sides of thebed body 1; one end of thecurved leg plate 5 is fixed on the fifth supporting rod 15; one side of thebed body 1 is provided with a rectangular positioning hole.

Thefirst roller mechanism 2 comprises afirst roller component 21, a firstthick roller 22 and afirst bracket 23; thefirst roller assembly 21 is arranged in the transverse middle of thebed body 1 and comprises two firstthin rollers 211 and two first fixedframes 212, the two first fixedframes 212 are respectively and fixedly connected with the upper ends of the first supportingrod 11 and the second supportingrod 12, and the firstthin rollers 211 are arranged between the two first fixedframes 212 and are rotatably connected with the two first fixedframes 212; the firstthick roller 22 is arranged at two sides of thefirst roller component 21, two ends of the firstthick roller 22 are rotatably connected with thefirst support 23, and thefirst support 23 is fixedly connected with the upper ends of thefirst support rod 11 and thesecond support rod 12 respectively; the firstthin roller 211 and the firstthick roller 22 are vertically arranged in thebed body 1.

Thesecond roller mechanism 3 comprises asecond roller assembly 31, a secondcoarse roller 32 and asecond bracket 33; thesecond roller assembly 31 is arranged in the transverse middle of thebed body 1 and comprises two secondthin rollers 311 and two second fixedframes 312, the two second fixedframes 312 are respectively and fixedly connected with the upper ends of the third supportingrod 13 and the fourth supportingrod 14, and the secondthin rollers 311 are arranged between the two second fixedframes 312 and are rotatably connected with the two second fixedframes 312; the secondthick roller 32 is arranged at two sides of thesecond roller component 31, two ends of the secondthick roller 32 are rotatably connected with thesecond bracket 33, and thesecond bracket 33 is fixedly connected with the upper ends of thethird support rod 13 and thefourth support rod 14 respectively; the secondthin roller 311 and the secondthick roller 32 are vertically arranged in thebed body 1.

Thethird roller mechanism 4 comprises athird bracket 42 and thirdthick rollers 41, two thirdthick rollers 41 are respectively arranged on two sides of thebed body 1, and two ends of each thirdthick roller 41 are respectively rotatably connected with thethird bracket 42; the lower end of thethird bracket 42 close to one side of the rectangular positioning hole is connected with a slidingguide rail 43 in a sliding way and used for the sliding of thethird roller mechanism 4; the lower end of the slidingguide rail 43 is fixedly connected with alifting mechanism 44 for lifting thethird roller mechanism 4 and the slidingguide rail 43; thebed body 1 far away from one side of the rectangular positioning hole is provided with aprotective baffle 16, thethird roller mechanism 4 at the same side is embedded into theprotective baffle 16, and thethird support 42 is fixedly connected with thebed body 1 and used for preventing a patient or a cotton quilt from falling.

Thefirst support rod 11 is not in contact with thebed body 1 and thefirst support rod 11 is connected with thesecond support rod 12 through a connectingrod 19; thesecond support rod 12 and the fifth support rod 15 are rotatably connected with thebed body 1, the fifth support rod 15 is arranged at the tail of thebed body 1, and thethird support rod 13 and thefourth support rod 14 are fixedly connected with thebed body 1.

4-8 firstthin rollers 211 and second thin rollers 311 (selected according to the width of the bed body 1); the number of the firstcoarse rollers 22 is two or four, preferably two, and the number of the secondcoarse rollers 32 is the same as that of the firstcoarse rollers 22; two thirdcoarse rollers 41 are provided; the firstfine roller 211 has a diameter identical to that of the secondfine roller 311, and the firstcoarse roller 22 has a diameter identical to that of the secondcoarse roller 32; the diameter of the thirdcoarse roller 41 is not less than 1.5 times the diameter of the firstcoarse roller 22, and the diameter of the firstcoarse roller 22 is not less than 1.5 times the diameter of the firstfine roller 211.

1. The back liftingleg bending mechanism 6 is arranged below thebed body 1 and comprises asupport frame 61, abalance rod 62, aback lifting rod 63 and aleg bending rod 64; thesupport frame 61 is arranged at the bottom of thebed body 1; the middle part of the balancingrod 62 is rotationally connected with the supportingframe 61, one end of the balancingrod 62 is rotationally connected with one end of theback rising rod 63, and the other end of the balancingrod 62 is rotationally connected with one end of theleg bending rod 64; the number of the connectingrods 19 is two, and the middle of the two connectingrods 19 is connected with one slidingrod 191 in a sliding manner; the other end of theback lifting rod 63 is fixedly connected with the slidingrod 191, and the other end of theleg bending rod 64 is fixedly connected with one end of theleg bending plate 5 far away from the fifth supporting rod 15.

Thewheelchair mechanism 7 is an electric wheelchair, and arectangular positioning pin 71 is arranged on the side surface of thewheelchair mechanism 7 corresponding to the rectangular positioning hole and used for connecting thewheelchair mechanism 7 with thebed body 1. Thewheelchair mechanism 7 comprises aback plate 72, aseat plate 73,road wheels 74 and anaxle bracket assembly 75; a firstroller belt mechanism 721 is longitudinally arranged in theback plate 72, a secondroller belt mechanism 731 is longitudinally arranged in theseat plate 73, and the patient is stably transferred to the wheelchair from the nursing bed by the rolling of the firstroller belt mechanism 721 and the secondroller belt mechanism 731; theback plate 72 is rotatably connected with theseat plate 73; the two walkingwheels 74 are connected and fixed at the bottom of theseat plate 73 through theaxle bracket assembly 75.

Thebed body 1 also comprises aheadboard 17 and abed foot support 18; theheadboard 17 is used to prevent the pillow from falling; the bed foot supports 18 are arranged at four corners of the bottom of thebed body 1.

The joints of the firstthin roller 211, the secondthin roller 311, the firstthick roller 22, the secondthick roller 32, the thirdthick roller 41, the slidingguide rail 43, the slidingrod 191 and the connectingrod 19 are all provided with a driving motor, the rotation of the driving motor is controlled by the control of the driving motor, the joint of the balancingrod 62 and the supportingframe 61 is provided with a rotating motor, the rotation of the rotating motor is controlled by the rotating motor, and thelifting mechanism 44 is connected with a hydraulic device and lifted by a hydraulic device controller; the head of a bed of thebed body 1 is provided with a control panel, and a driving motor, a rotating motor, a hydraulic device and the control panel are electrically connected.

In order to ensure that thewheelchair mechanism 7 can accurately find the rectangular positioning hole, therectangular positioning pin 71 is provided with an infrared sensor for identifying the rectangular positioning hole; therectangular positioning pin 71 and the rectangular positioning hole are provided with self-locking devices to prevent thewheelchair mechanism 7 from moving when a patient is moved; the self-locking device is electrically connected with the control panel; the infrared sensor is connected with the control panel through Bluetooth.

The working principle is as follows: the driving motor is controlled to rotate through the bedside control panel, so that the firstthin roller 211 and the secondthin roller 311 are driven to rotate, and the left-right translation of the patient on the nursing bed is realized; the firstcoarse roller 22, the secondcoarse roller 32 and the thirdcoarse roller 41 are driven to rotate through the control panel, and the turning of the patient is realized through the height difference between the rollers; meanwhile, the control panel can regulate and control the running speed of the driving motor at any time so as to regulate the speed of moving or turning over the patient.

Rotate the motor through head of a bed control panel drive and rotate, and then controlbalancing pole 62 usessupport frame 61 to rotate as the strong point, play back of thebody pole 63 and push up, first bracingpiece 11 is followed back of thebody pole 63 and is made the translation upwards, second bracingpiece 12 rotates,bent leg pole 64 moves down simultaneously, 5 one end of leg bending board is followedbent leg pole 64 and is moved down, fifth bracing piece 15 rotates, and then get up the back of the body at patient and carry out leg bending to patient simultaneously, prevent that patient's joint, muscle are stiff for a long time, pull or support nature damage appear in the back of the body in-process. The control panel drives the slidingrod 191 to slide on the connectingrod 19, so that the rotation angle of theback lifting rod 63 is controlled, the back lifting angle can be adjusted to a right angle, and the patient can sit up more conveniently. The control panel can regulate and control the running speed of the rotating motor and the hydraulic device at any time, so as to regulate the comfort level of the patient.

If a patient is transferred from the bed body 1 to the wheelchair mechanism 7, firstly the wheelchair mechanism 7 recognizes the rectangular positioning hole through the infrared sensor, then the wheelchair mechanism 7 moves towards the bed body 1 to realize the butt joint of the rectangular positioning pin 71 and the rectangular positioning hole, the self-locking device performs self-locking, the first roller belt mechanism 721 and the second roller belt mechanism 731 rotate anticlockwise as shown in figure 1, the third roller mechanism 4 close to the rectangular positioning hole slides to the tail part of the bed body 1 through the sliding guide rail 43, simultaneously the top surface of the third thick roller 41 is adjusted to be flush with the top surface of the second roller mechanism 3 through the lifting mechanism 4, then the bed body 1 adjusts the patient to a sitting posture through the back-bending leg mechanism 6, the first thin roller 211, the second thin roller 311, the first thick roller 22 and the second thick roller 32 rotate anticlockwise as shown in figure 1 simultaneously, and the patient is translated from the bed body 1 to the wheelchair mechanism 7, the wheelchair mechanism can also be provided with a lifting handrail which is used for fixing the position of a patient or providing a hand point of force for the patient when the patient is transferred to the wheelchair mechanism 7; in the same way, the patient is transferred from the wheelchair mechanism 7 to the bed body 1, and all the motors can be reversely rotated.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A multifunctional nursing bed is characterized in that: comprises a bed body (1), a first roller mechanism (2), a second roller mechanism (3) and a third roller mechanism (4);

a first supporting rod (11), a second supporting rod (12), a third supporting rod (13) and a fourth supporting rod (14) are transversely arranged on the bed body (1) from the bed head to the bed tail; the first roller mechanism (2) is fixed on the first supporting rod (11) and the second supporting rod (12); the second roller mechanism (3) is fixed on the third supporting rod (13) and the fourth supporting rod (14); the third roller mechanisms (4) are arranged on two sides of the bed body (1); one side of the bed body (1) is provided with a rectangular positioning hole;

the first roller mechanism (2) comprises a first roller component (21), a first coarse roller (22) and a first bracket (23); the first roller assemblies (21) are arranged in the transverse middle of the bed body (1) and comprise first thin rollers (211) and first fixing frames (212), the number of the first fixing frames (212) is two, the first thin rollers are respectively fixedly connected with the upper ends of the first supporting rod (11) and the second supporting rod (12), and the first thin rollers (211) are arranged between the two first fixing frames (212) and are rotatably connected with the two first fixing frames (212); the first thick roller (22) is arranged on two sides of the first roller assembly (21), two ends of the first thick roller (22) are rotatably connected with the first support (23), and the first support (23) is fixedly connected with the upper ends of the first support rod (11) and the second support rod (12) respectively; the first thin roller (211) and the first thick roller (22) are vertically arranged in the bed body (1);

the second roller mechanism (3) comprises a second roller component (31), a second coarse roller (32) and a second bracket (33); the second roller assemblies (31) are arranged in the transverse middle of the bed body (1) and comprise second thin rollers (311) and second fixed frames (312), the number of the second fixed frames (312) is two, the second thin rollers are respectively and fixedly connected with the upper ends of the third supporting rod (13) and the fourth supporting rod (14), and the second thin rollers (311) are arranged between the two second fixed frames (312) and are rotatably connected with the two second fixed frames (312); the second thick rollers (32) are mounted on two sides of the second roller assembly (31), two ends of the second thick rollers (32) are rotatably connected with the second support (33), and the second support (33) is fixedly connected with the upper ends of the third support rod (13) and the fourth support rod (14) respectively; the second thin roller (311) and the second thick roller (32) are vertically arranged in the bed body (1);

the third roller mechanism (4) comprises a third support (42) and third thick rollers (41), the number of the third thick rollers (41) is two, the third thick rollers are respectively arranged on two sides of the bed body (1), and two ends of the third thick rollers (41) are respectively in rotating connection with the third support (42); the lower end of the third bracket (42) close to one side of the rectangular positioning hole is connected with a sliding guide rail (43) in a sliding mode, and the lower end of the sliding guide rail (43) is fixedly connected with a lifting mechanism (44); the bed body (1) far away from one side of the rectangular positioning hole is provided with a protective baffle (16), a third roller mechanism (4) at the same side is embedded into the protective baffle (16), and the third support (42) is fixedly connected with the bed body (1).

2. A multi-functional nursing bed as defined in claim 1, wherein: a fifth support rod (15) is also transversely arranged on the bed body; the first supporting rod (11) is connected with the second supporting rod (12) through a connecting rod (19); the bed is characterized in that the second support rod (12) and the fifth support rod (15) are rotatably connected with the bed body (1), the fifth support rod (15) is arranged at the tail of the bed body (1), and the third support rod (13) and the fourth support rod (14) are fixedly connected with the bed body (1).

3. A multi-functional nursing bed as defined in claim 2, characterized in that: 4-8 first thin rollers (211) and second thin rollers (311); the number of the first coarse rollers (22) is two or four, and the number of the second coarse rollers (32) is the same as that of the first coarse rollers (22); the number of the third thick rollers (41) is two.

4. A multi-functional care bed according to claim 3, characterized in that: the first fine cylinder (211) is of the same diameter as the second fine cylinder (311), and the first coarse cylinder (22) is of the same diameter as the second coarse cylinder (32); the diameter of the third coarse roller (41) is not less than 1.5 times of the diameter of the first coarse roller (22), and the diameter of the first coarse roller (22) is not less than 1.5 times of the diameter of the first fine roller (211).

5. The multifunctional nursing bed as claimed in claim 4, wherein: the nursing bed further comprises a leg bending plate (5); one end of the curved leg plate (5) is fixed on the fifth supporting rod (15).

6. The multifunctional nursing bed as claimed in claim 5, wherein: the nursing bed also comprises a back lifting and leg bending mechanism (6); the back lifting leg bending mechanism (6) is arranged below the bed body (1) and comprises a support frame (61), a balance rod (62), a back lifting rod (63) and a leg bending rod (64); the support frame (61) is arranged at the bottom of the bed body (1); the middle part of the balance rod (62) is rotatably connected with the support frame (61), one end of the balance rod (62) is rotatably connected with one end of the back lifting rod (63), and the other end of the balance rod is rotatably connected with one end of the crank leg rod (64); the number of the connecting rods (19) is two, and the middle of each connecting rod (19) is connected with one sliding rod (191) in a sliding manner; the other end of the back lifting rod (63) is fixedly connected with the sliding rod (191), and the other end of the curved leg rod (64) is fixedly connected with one end, far away from the fifth supporting rod (15), of the curved leg plate (5).

7. The multifunctional nursing bed as claimed in claim 6, wherein: the nursing bed further comprises a wheelchair mechanism (7), the wheelchair mechanism (7) is an electric wheelchair, and rectangular positioning pins (71) are arranged on the side face of the wheelchair mechanism (7) corresponding to the rectangular positioning holes; the wheelchair mechanism (7) comprises a back plate (72), a seat plate (73), a travelling wheel (74) and a wheel axle bracket assembly (75); a first roller belt mechanism (721) is longitudinally arranged in the back plate (72), and a second roller belt mechanism (731) is longitudinally arranged in the seat plate (73); the back plate (72) is rotationally connected with the seat plate (73); the two walking wheels (74) are connected and fixed at the bottom of the seat plate (73) through the wheel axle bracket assembly (75).

8. The multifunctional nursing bed as claimed in claim 7, wherein: the connection parts of the first thin roller (211), the second thin roller (311), the first thick roller (22), the second thick roller (32), the third thick roller (41), the sliding guide rail (43), the sliding rod (191) and the connecting rod (19) are all provided with driving motors, the connection part of the balancing rod (62) and the supporting frame (61) is provided with a rotating motor, and the lifting mechanism (44) is connected with a hydraulic device; the bed head of the bed body (1) is provided with a control panel, and the driving motor, the rotating motor and the hydraulic device are electrically connected with the control panel.

9. A multi-functional care bed according to claim 8, characterized in that: an infrared sensor is arranged on the rectangular positioning pin (71); the rectangular positioning pin (71) and the rectangular positioning hole are provided with self-locking devices; the self-locking device is electrically connected with the control panel; the infrared sensor is connected with the control panel through Bluetooth.

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