Disclosure of Invention
Aiming at the technical problems existing in the prior art, one of the purposes of the invention is as follows: the utility model provides a two-state locking subassembly, it adopts ratchet to carry out one-way locking, produces the empty gesture through the pawl and passes over the one-way tooth's socket of ratchet realization unblock in ratchet arc recess slip, need not to design complicated movable disk and arc wall and calculate the movable stroke of shelves point in the movable disk arc wall, and the structure is simplified greatly, and unblock time is short, and user experience is good.
Aiming at the technical problems in the prior art, the second purpose of the invention is as follows: the utility model provides a material handling assists utensil, it can be with the material applied to human forearm's force transfer to human upper arm and shoulder through two state locking subassembly, greatly reduced the burden of forearm, effectively reduced the forearm fatigue, make the transport operation lighter.
Aiming at the technical problems in the prior art, the third purpose of the invention is as follows: the utility model provides a wearing formula transport is assisted utensil, it can be with the material applied to the left forearm of human body and right forearm's power shift to left shoulder, right shoulder, chest and back through binary locking subassembly and chest band, alleviateed left forearm and right forearm's burden greatly, effectively reduced left forearm and right forearm fatigue, make the transport operation lighter.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a two-state locking assembly comprises a ratchet wheel and a base, wherein the base is hinged to a ratchet wheel rotating shaft, and the base is provided with a pawl and a spring; the two ends of the spring are respectively connected with the base and one end of the pawl, the other end of the pawl is driven to be abutted against the ratchet wheel, a unidirectional tooth slot and an arc-shaped groove are arranged on the ratchet wheel, the arc-shaped groove is arranged on one side of the unidirectional tooth slot, the unidirectional tooth slot inclines towards the direction of the arc-shaped groove, the other end of the pawl is matched with the unidirectional tooth slot, and when the ratchet wheel rotates along a first direction to enable the other end of the pawl to slide across the unidirectional tooth slot, the other end of the pawl is matched with the unidirectional tooth slot to lock the ratchet wheel; when the ratchet wheel rotates along the second direction to enable the other end of the pawl to slide through the arc-shaped groove, the other end of the pawl vacates and passes through the unidirectional tooth slot, and the first direction is opposite to the second direction.
Further, the other end of the pawl is provided with a tip part and a protrusion part, the tip part and the protrusion part are respectively arranged at two sides of the other end of the pawl, the tip part is correspondingly arranged with the unidirectional tooth groove, and when the ratchet wheel rotates along the first direction to enable the tip part to slide through the unidirectional tooth groove, the tip part is matched with the unidirectional tooth groove to unidirectionally lock the ratchet wheel; when the ratchet wheel is locked unidirectionally, the protruding part is positioned between the tip part and the arc-shaped groove, and when the ratchet wheel rotates along the second direction to enable the protruding part to slide through the arc-shaped groove, the protruding part vacates and passes through the unidirectional tooth slot.
Further, the surface of the protruding portion is a cambered surface.
The utility model provides a material handling assists utensil, including first rigid part, second rigid part and a two-state locking subassembly, first rigid part one end is equipped with the connecting device that can connect in human wrist, first rigid part other end rigid coupling is in the ratchet pivot, second rigid part one end swing joint has wearing formula shoulder sleeve, second rigid part other end rigid coupling is in the base, first rigid part drives the ratchet and rotates when making the pawl other end slide one-way tooth's socket along first direction, the pawl other end cooperates one-way locking ratchet with one-way tooth's socket; the first rigid piece drives the ratchet wheel to rotate along the second direction, so that when the other end of the pawl slides through the arc-shaped groove, the other end of the pawl vacates and passes through the unidirectional tooth slot.
Further, the connecting device is a glove, an elastic strap is arranged between the glove and the wearable shoulder sleeve, and two ends of the elastic strap are respectively connected with the glove and the wearable shoulder sleeve.
Further, the elastic strap both ends are connected in gloves upper end and wearing formula shoulder sleeve front end respectively, and first rigidity spare is connected in the gloves lower extreme, and the second rigidity spare is connected in wearing formula shoulder sleeve rear end.
Further, the elastic band is connected to the glove through the magic tape.
Further, an elastic groove is arranged in the middle of the glove.
The utility model provides a utensil is assisted in wearing formula transport, includes that 2 materials transport assist utensil, is equipped with chest band between 2 wearing formula shoulder cover, and chest band both sides are connected respectively in 2 wearing formula shoulder covers, and chest band is used for encircling human chest, and chest band is equipped with chest knot and length adjustment device.
Further, chest band below is equipped with the waist band, is equipped with X shape band between waist band and the chest band, and X shape band upper end is connected in chest band rear end, and X shape band lower extreme is connected in waist band rear end, and the waist band is used for encircling human waist, and the waist band is equipped with waist knot and length adjustment device.
In general, the invention has the following advantages:
the ratchet mechanism is adopted for unidirectional locking, the pawl slides in the arc-shaped groove of the ratchet to generate a vacation gesture to cross the unidirectional tooth groove of the ratchet to realize unlocking, a movable disc with complex design and an arc-shaped groove are not needed, and the movable stroke of a gear point in the arc-shaped groove of the movable disc is calculated, so that the structure is greatly simplified, the reliable unidirectional locking effect and unlocking effect can be simultaneously obtained, the unlocking time is short, and the user experience is good.
Detailed Description
The present invention will be described in further detail below.
As shown in fig. 1 to 5, a two-state locking assembly comprises a ratchet 14 and a base 11, wherein the base 11 is hinged to a ratchet rotating shaft 143, and the base 11 is provided with a pawl 13 and a spring 12; the two ends of the spring 12 are respectively connected with one end of the base 11 and one end of the pawl 13, the other end of the pawl 13 is driven to be abutted against the ratchet wheel 14, a one-way tooth groove 141 and an arc-shaped groove 142 are arranged on the ratchet wheel 14, the arc-shaped groove 142 is arranged on one side of the one-way tooth groove 141, the one-way tooth groove 141 inclines towards the direction of the arc-shaped groove 142, the other end of the pawl 13 is matched with the one-way tooth groove 141, and when the ratchet wheel 14 rotates along the first direction to enable the other end of the pawl 13 to slide through the one-way tooth groove 141, the other end of the pawl 13 is matched with the one-way tooth groove 141 to lock the ratchet wheel 14; when the ratchet wheel 14 rotates in the second direction so that the other end of the pawl 13 slides through the arc-shaped groove 142, the other end of the pawl 13 vacates over the one-way tooth groove 141, and the first direction is opposite to the second direction.
Specifically, one end of the spring 12 is fixedly connected to the base 11, and the other end is fixedly connected to one end of the pawl 13. The pawl 13 is rotatably connected to the base 11 by a hinge shaft. The spring 12 is pre-stretched during installation, and the generated retraction force drives the pawl 13 to rotate around the hinge shaft, so that the other end of the pawl 13 is pressed against the ratchet wheel 14.
The ratchet 14 rotates in a first direction, which is clockwise as viewed in fig. 1, and the other end of the pawl 13 slides on the ratchet 14. When the ratchet wheel 14 rotates clockwise, the arcuate groove 142 is located downstream of the one-way spline 141. When the other end of the pawl 13 slides through the one-way tooth slot 141, the other end of the pawl 13 is clamped into the one-way tooth slot 141 and is matched with the one-way locking ratchet wheel 14 with the one-way tooth slot 141 because the other end of the pawl 13 is matched with the one-way tooth slot 141. At this time, the ratchet 14 is restricted by the pawl 13 and cannot be rotated counterclockwise.
As the ratchet wheel 14 continues to rotate clockwise, the other end of the pawl 13 slides out of the one-way spline 141 in the oblique direction of the one-way spline 141 and slides through the arc-shaped groove 142.
After the other end of the pawl 13 slides out of the one-way slot 141 and over the arcuate groove 142, an unlocking action may be performed. The ratchet wheel 14 rotates in the second direction, and the other end of the pawl 13 slides on the ratchet wheel 14 in the opposite direction, assuming that the second direction is counterclockwise. When the other end of the pawl 13 slides across the arc-shaped groove 142, because the arc-shaped groove 142 has an upward angle along the groove surface, the other end of the pawl 13 can generate a vacation gesture and fly to the direction of the unidirectional tooth groove 141 when sliding in the opposite direction of the arc-shaped groove 142 by referring to the principle that the carrier-based aircraft slides and takes off on the inclined deck. When the ratchet wheel 14 rotates counterclockwise at a high speed, the other end of the pawl 13 slides in the opposite direction on the arc-shaped groove 142, thereby generating a long dead time after emptying. During this dead time, the spring 12 does not press the other end of the pawl 13 back onto the ratchet wheel 14, and the other end of the pawl 13 has emptied past the one-way tooth slot 141 of the ratchet wheel 14, thereby achieving unlocking of the ratchet wheel 14. At this time, the ratchet wheel 14 is no longer constrained by the pawl 13 and can be rotated counterclockwise.
By providing springs 12 of different specifications or adjusting the amount of pretensioning of the springs 12, an appropriate spring force of the springs 12 can be obtained. When the ratchet wheel 14 rotates clockwise, the other end of the pawl 13 can be pressed on the ratchet wheel 14 by proper elastic force of the spring 12, and the unidirectional locking effect is not affected; when the ratchet wheel 14 rotates anticlockwise, the other end of the emptied pawl 13 is not pressed onto the unidirectional tooth slot 141 of the ratchet wheel 14 by the proper elastic force of the spring 12 before the other end of the pawl 13 is emptied to pass through the unidirectional tooth slot 141 of the ratchet wheel 14, and the unlocking effect is not affected.
The two-state locking assembly 1 adopts the ratchet mechanism to carry out one-way locking, the pawl 13 slides in the arc-shaped groove 142 of the ratchet wheel 14 to generate a vacation gesture to pass through the one-way tooth groove 141 of the ratchet wheel 14 to realize unlocking, a complex movable disc and arc-shaped groove are not required to be designed, the movable stroke of a blocking point in the arc-shaped groove of the movable disc is not required to be calculated, the structure is greatly simplified, the reliable one-way locking effect and unlocking effect can be simultaneously obtained, the unlocking time is short, and the user experience is good.
Further, the other end of the pawl 13 is provided with a tip 131 and a protrusion 132, the tip 131 and the protrusion 132 are respectively arranged on two sides of the other end of the pawl 13, the tip 131 is arranged corresponding to the unidirectional tooth slot 141, and when the ratchet wheel 14 rotates along the first direction to enable the tip 131 to slide through the unidirectional tooth slot 141, the tip 131 is matched with the unidirectional tooth slot 141 to unidirectionally lock the ratchet wheel 14; when the ratchet 14 is unidirectionally locked, the protrusion 132 is located between the tip 131 and the arcuate groove 142, and when the ratchet 14 is rotated in the second direction such that the protrusion 132 slides through the arcuate groove 142, the protrusion 132 vacates the unidirectional spline 141.
When the tip 131 is clamped into the unidirectional tooth groove 141, the tip 131 is arranged corresponding to the unidirectional tooth groove 141, the tip structure cannot slide out of the unidirectional tooth groove 141 reversely when the ratchet 14 is locked, and the unidirectional locking effect is more reliable. The tip 131 and the projection 132 are disposed adjacently, and are located on both sides of the other end of the pawl 13. When the ratchet 14 rotates clockwise, the protrusion 132 and the tip 131 sequentially contact the ratchet 14. When the ratchet 14 rotates counterclockwise, the tip portion 131 and the protrusion 132 sequentially contact the ratchet 14.
During the process of the tip 131 emptying and flying over the one-way spline 141, since the spring 12 has a tendency to press the other end of the pawl 13 back onto the ratchet wheel 14, the tip 131 may be pressed into the one-way spline 141 of the ratchet wheel 14 by the spring 12 before crossing the one-way spline 141, thereby causing unlocking failure.
The arrangement of the projection 132 provides the other end of the pawl 13 with a second run-up on the arcuate recess 142 prior to flight. The running-up of the protruding part 132 strengthens the emptying situation of the other end of the whole pawl 13, the superposition of the two emptying take-off times of the tip part 131 and the protruding part 132 overcomes the elastic force of the spring 12 together, and before being pressed into the unidirectional tooth groove 141 of the ratchet wheel 14 by the spring 12, the tip part 131 and the protruding part 132 successfully fly over the unidirectional tooth groove 141 in the emptying process, and finally the unlocking of the ratchet wheel 14 is completed.
Further, the surface of the protrusion 132 is a cambered surface.
The protrusion 132 is arcuate in cross-section. When unlocking is needed, the arc-shaped protruding part 132 slides on the arc-shaped groove 142, the cambered surface of the protruding part 132 sequentially contacts with the arc-shaped groove 142 from one end close to the tip 131 to one end far away from the tip 131, and a rotating and throwing trend is generated in the running-up process, so that the dead time of the other end of the pawl 13 after being emptied from the arc-shaped groove 142 is longer, and the pawl can more easily successfully fly through the unidirectional tooth groove 141 before being pressed into the unidirectional tooth groove 141 of the ratchet wheel 14 by the spring 12, and the final unlocking purpose is achieved. Meanwhile, even if the dead time is insufficient or the elasticity of the spring 12 is too strong, the protruding portion 132 is pressed into the unidirectional tooth groove 141 in the flying process, and the unique cambered surface design of the protruding portion 132 can help the protruding portion 132 to slip out of the unidirectional tooth groove 141, so that the unlocking is successful.
With the development of science and technology, automation is a rapidly growing field. But even though the machine has helped humans to release from the partially heavy work, there are many work scenarios where manual material handling is not available.
The applicant has found that when one lifts the material by hand, the forearm is generally more stressed, and in particular when the forearm is lifted upwards, the moment exerted by the material on the forearm is greater and the forearm is more fatigued.
Therefore, there is a need for a material handling accessory that can effectively reduce forearm fatigue when a person lifts the material by hand.
As shown in fig. 6, the auxiliary material handling tool of the present invention comprises a first rigid member 21, a second rigid member 22 and a dual-state locking assembly 1, wherein one end of the first rigid member 21 is provided with a connecting device capable of being connected with a wrist of a human body, the other end of the first rigid member 21 is fixedly connected with a ratchet wheel rotating shaft 143, one end of the second rigid member 22 is movably connected with a wearable shoulder sleeve 32, the other end of the second rigid member 22 is fixedly connected with a base 11, and the first rigid member 21 drives a ratchet wheel 14 to rotate along a first direction so that when the other end of a pawl 13 slides through a unidirectional tooth groove 141, the other end of the pawl 13 is matched with the unidirectional tooth groove 141 to unidirectionally lock the ratchet wheel 14; the first rigid member 21 rotates the ratchet 14 in the second direction such that the other end of the pawl 13 clears the one-way slot 141 as the other end of the pawl 13 slides through the arcuate slot 142.
Specifically, the first rigid member 21 is disposed along the length direction of the forearm of the human body, one end of the first rigid member 21 is fixed to the wrist of the human body through a connecting device, and the other end of the first rigid member is fixedly connected to the ratchet rotating shaft 143 of the binary locking assembly 1, so that the ratchet 14 can be driven to rotate.
The second rigid member 22 is arranged along the length direction of the upper arm of the human body, one end of the second rigid member 22 is movably connected with the wearable shoulder sleeve 32, and can rotate or twist with the wearable shoulder sleeve 32, the other end of the second rigid member 22 is fixedly connected with the base 11 of the dual-state locking assembly 1, and when the second rigid member 22 is kept motionless, the pawl 13 is kept motionless.
The two-state locking assembly 1 is positioned at the elbow joint of a human body, and the wearing type shoulder sleeve 32 is sleeved on the shoulder of the human body.
When a person lifts the material by hand, the upper arm of the person remains substantially stationary with the second rigid member 22, and the forearm drives the first rigid member 21 and the ratchet wheel 14 to rotate relative to the upper arm and the second rigid member 22 in a first direction. As shown in fig. 7, the first direction is clockwise, and the angle between the first rigid member 21 and the second rigid member 22 gradually decreases as the first rigid member 21 rotates. When the front arm is lifted to a certain angle to enable the other end of the pawl 13 to slide through the unidirectional tooth groove 141, the other end of the pawl 13 is matched with the unidirectional locking ratchet wheel 14 with the unidirectional tooth groove 141, so that the first rigid piece 21 and the second rigid piece 22 are locked in a unidirectional way, and the first rigid piece 21 cannot rotate anticlockwise relative to the second rigid piece 22. At this time, the forearm of people can be loosened, the material does not need to be lifted by a great force, the gravity applied to the forearm by the material can be transferred to the first rigid member 21 and is transferred to the second rigid member 22 and the wearing shoulder sleeve 32 through the two-state locking assembly 1, and the weight of the material is borne by the upper arm and the shoulder which are stronger than the forearm, so that the burden of the forearm is greatly reduced, the fatigue of the forearm is effectively reduced, and the carrying operation is easier. The contact area between the wearing type shoulder sleeve 32 and the shoulder is larger, the pressure born by the shoulder is smaller, and the wearing type shoulder sleeve is not easy to fatigue.
When unlocking is required, the first previous arm continues to rotate along the first direction, driving the first rigid member 21 and the ratchet wheel 14 to rotate, and the pawl 13 slides out of the unidirectional tooth slot 141 along the oblique direction of the unidirectional tooth slot 141 and slides through the arc-shaped groove 142. The forearm then moves the first rigid member 21 and the ratchet 14 in a fast, second, counter-clockwise rotation. The other end of the pawl 13 is emptied over the one-way tooth slot 141 after fast running on the arc-shaped groove 142, unlocking of the ratchet wheel 14 is realized, and the first rigid member 21 can resume bidirectional rotation. In the concrete operation, after the material is lifted to the destination, the material is placed on the ground, and the forearm is naturally lifted for a small section and quickly pressed down, so that unlocking can be realized.
The initial relative positions of the two-state locking assembly 1 and the first 21 and second 22 rigid members may be set as desired. For example, when the forearm and the upper arm are straightened, that is, when the angle between the first rigid member 21 and the second rigid member 22 is 180 °, the angle between the rotation axis of the ratchet wheel 14 and the rotation axis 143 of the ratchet wheel and the unidirectional spline 141 is θ, as shown in fig. 7, the unidirectional spline 141 is located downstream of the other end of the ratchet wheel 13, and the arc-shaped groove 142 is located downstream of the unidirectional spline 141. Along with the lifting and rotation of the forearm, the included angle between the first rigid piece 21 and the second rigid piece 22 is gradually reduced, and when the included angle between the other end of the pawl 13 and the ratchet rotating shaft 143 and the included angle between the ratchet rotating shaft 143 and the unidirectional tooth groove 141 are changed from theta to 0, namely the other end of the pawl 13 is clamped into the unidirectional tooth groove 141, so that unidirectional locking is realized.
The connecting device is a glove 33, an elastic strap 31 is arranged between the glove 33 and the wearable shoulder sleeve 32, and two ends of the elastic strap 31 are respectively connected with the glove 33 and the wearable shoulder sleeve 32.
By wearing the glove 33, one end of the first rigid member 21 can be fixed to the wrist, and the first rigid member 21 can be rotated when the forearm is rotated.
When lifting material, the moment when lifting material from the ground often requires maximum effort. The elastic band 31 is stretched by setting a proper length of the elastic band 31 so that the angle between the first rigid member 21 and the second rigid member 22 is 180 degrees. When the front arm lifts up the material, the retraction force of the elastic band 31 connected to the wearable shoulder sleeve 32 makes the included angle between the first rigid piece 21 and the second rigid piece 22 smaller, so that a great supporting force can be given to the front arm at the moment of lifting up the material, which is helpful for reducing the burden of the front arm.
The two ends of the elastic band 31 are respectively connected to the upper end of the glove 33 and the front end of the wearable shoulder sleeve 32, the first rigid member 21 is connected to the lower end of the glove 33, and the second rigid member 22 is connected to the rear end of the wearable shoulder sleeve 32.
The two ends of the elastic band 31 are respectively connected to the upper end of the glove 33 and the front end of the wearable shoulder sleeve 32, that is, the elastic band 31 is arranged above the forearm and the upper arm, when the forearm lifts up the material, the elastic band 31 pulls the first rigid member 21 towards the second shoulder direction more easily, which is helpful for reducing the burden of the forearm. The first rigid member 21 is connected to the lower end of the glove 33, and the second rigid member 22 is connected to the rear end of the wearable shoulder sleeve 32, namely, the first rigid member 21 and the second rigid member 22 are arranged behind the forearm and the upper arm of the human body, and when the forearm and the upper arm rotate, the first rigid member 21 and the second rigid member 22 at the rear are driven to correspondingly rotate, and the first rigid member 21 and the second rigid member 22 do not interfere the movement of the forearm and the upper arm.
The elastic band 31 is connected to the glove 33 by means of a velcro tape 34. The velcro tape 34 is relatively easy to attach or detach.
The middle part of the glove 33 is provided with an elastic groove.
After the palm of the hand has opened the glove 33, the elastic recess is opened, which can accommodate various shapes of materials, and is particularly suitable for picking up block, strip or granular materials. The impact of the material is buffered and the falling risk of the material is reduced through the characteristics of the elastic material, so that the material handling operation is more labor-saving, safe and comfortable.
In order to achieve better man-machine interaction and achieve harmony and unification of worker-material-operation environment systems, it is necessary to develop a wearable carrying aid, which takes a manual carrying principle as a guiding element and utilizes methods such as gravity center transfer, force transfer and energy transfer, so as to improve the working efficiency and reduce occupational musculoskeletal diseases and economic losses.
As shown in fig. 8 and 9, the wearable carrying auxiliary tool of the invention comprises 2 auxiliary tools for carrying materials, wherein the 2 auxiliary tools for carrying materials are respectively provided with 1 wearable shoulder sleeve 32, a chest strap 4 is arranged between the 2 wearable shoulder sleeves 32, two sides of the chest strap 4 are respectively connected with the 2 wearable shoulder sleeves 32, the chest strap 4 is used for encircling the chest of a human body, and the chest strap 4 is provided with a chest buckle 41 and a length adjusting device.
Specifically, the left hand and the right hand are respectively provided with a material handling auxiliary tool, and long or heavy materials can be cooperatively handled through the left hand and the right hand. The 2 wearing type shoulder sleeves 32 are respectively worn on the left shoulder and the right shoulder, the chest strap 4 connects the left material handling auxiliary tool and the right material handling auxiliary tool, and the length adjusting device of the chest strap 4 can adapt to different chest circumferences of different workers and is locked by the chest buckle 41.
When a worker lifts the material with both hands, the 2 first rigid members 21 in the 2 material handling auxiliaries are respectively lifted by rotating upward under the drive of the left and right forearms. When rotated to a certain angle, the 2 first rigid members 21 are all unidirectionally locked. At this time, the left and right forearms of the worker can be relaxed, and the weight of the material is transferred from the 2 first rigid members 21 to the 2 second rigid members 22, and further to the left upper arm, the right upper arm, the left shoulder and the right shoulder, and further to the chest and back through the chest strap 4. Through the transfer of multiple forces, the forces applied to the left forearm and the right forearm by the materials are borne by stronger left shoulder, right shoulder, chest and back respectively, so that the burden of the left forearm and the right forearm is greatly reduced, the fatigue of the left forearm and the right forearm is effectively reduced, and the carrying operation is easier.
The chest band 4 below is equipped with waist band 5, is equipped with X shape band 6 between waist band 5 and the chest band 4, and X shape band 6 upper end is connected in chest band 4 rear end, and X shape band 6 lower extreme is connected in waist band 5 rear end, and waist band 5 is used for encircling human waist, and waist band 5 is equipped with waist knot 51 and length adjustment device.
The length adjusting device of the waist belt 5 can adapt to different waistlines of different workers and is locked by the waist buckle 51. After the forces applied to the left and right forearms by the material are transferred to the chest and back, they are further transferred to the waist through the X-shaped belt 6 so that the entire upper body part takes part in the weight sharing of the material. The X-shaped strap 6 has wide coverage, can ensure that the back of a large range participates in the sharing of force, ensures that the back muscle is not easy to be injured, and improves the safety.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.