CN113586898A - LED display screen and bearing base thereof - Google Patents

Abstract

The application relates to an LED display screen and a bearing base thereof, which comprise a fixed frame and a supporting frame for supporting the fixed frame, wherein the supporting frame comprises two supporting legs, a first supporting rod is commonly connected between the two supporting legs, the supporting legs are also provided with a second supporting rod, and the second supporting rod is vertically arranged in the horizontal plane of the first supporting rod; the fixed frame is connected with the first supporting rod in a rotating mode around the axis of the first supporting rod, the fixed frame is hinged with supporting rods arranged corresponding to the second supporting rod, the free ends of the two supporting rods are connected with a third supporting rod together, the third supporting rod and the second supporting rod are arranged in a sliding mode along the length direction of the second supporting rod, and a limiting part used for limiting the third supporting rod to slide is arranged between the third supporting rod and the second supporting rod. This application is through adjusting the inclination of fixed frame to the display angle of LED display screen body on it that changes, and then realize good display effect.

Description

LED display screen and bearing base thereof

Technical Field

The application relates to the field of LED display devices, in particular to an LED display screen and a bearing base thereof.

Background

An LED display screen is a flat panel display, and is composed of small LED module panels, and is generally used to display various information such as text, images, video, and video signals.

The LED display screen is widely applied to commercial media, cultural performance markets, stadiums, information dissemination, news distribution, security trading and the like, and also can be applied to outdoor environments such as highways, toll stations, scenic spots and other areas, so that the application environment is various, and the requirements on various performances of the LED display screen are higher and higher.

In view of the above-mentioned related technologies, the inventor believes that, when the LED display screen is installed outdoors, such as on an outer support of a highway or at a toll gate, the installation foundation is different, which greatly affects the display angle and effect of the LED display screen, thereby affecting people's reading of information on the LED display screen.

Disclosure of Invention

In order to improve the display effect of LED display screen, this application provides an LED display screen and bears base thereof.

The application provides a bear base adopts following technical scheme:

a bearing base comprises a fixed frame and a supporting frame for supporting the fixed frame, wherein the supporting frame comprises two supporting legs, a first supporting rod is connected between the two supporting legs, the supporting legs are also provided with second supporting rods, and the second supporting rods are vertically arranged in the horizontal plane of the first supporting rods; the fixed frame with first bracing piece rotates around first bracing piece axle center to be connected, fixed frame articulated connection has the branch that corresponds the second bracing piece setting, and the free end of two branches is connected with the third bracing piece jointly, the third bracing piece with the second bracing piece slides along second bracing piece length direction and sets up, just the third bracing piece with be equipped with the locating part that is used for restricting the third bracing piece and slides between the second bracing piece.

By adopting the technical scheme, when the adjusting device is used, the inclination angle of the fixing frame is adjusted by utilizing the rotation setting of the fixing frame, then the third support rod is driven to slide relative to the second support rod through the hinge joint of the support rods, and after the adjustment is finished, the third support rod is locked through the limiting piece, so that the adjusting position of the fixing frame is locked; the inclination angle of the fixing frame is adjusted, so that the display angle of the LED display screen on the fixing frame is changed, and a good display effect is achieved. And, through setting up triangle bearing structure to effectively improve the support stability of fixed frame.

Optionally, a first anchor ear surrounding the third support rod is arranged at the end part of the support rod; the locating part includes the second staple bolt, the third bracing piece with the outer wall fixed connection of second staple bolt, the second staple bolt with the second bracing piece encircles fixedly.

Through adopting above-mentioned technical scheme, when treating that branch adjustment is to suitable angle, can lock in proper order and hold second staple bolt, first staple bolt tightly for the third bracing piece is fixed mutually with the second bracing piece, and branch is fixed mutually with the third bracing piece, thereby makes whole triangular support structure who becomes the steadiness, and its anti-wind shock resistance is stronger, thereby effectively improves the support stability of fixed frame.

Optionally, the second bracing piece has seted up the spout along self length direction, the tip of third bracing piece is equipped with the sliding block, the third bracing piece with be connected through first steel strand wires between the sliding block, the sliding block with the spout slides and is connected, the locating part is used for the restriction sliding of sliding block.

Through adopting above-mentioned technical scheme, through setting up first steel strand wires for be non-rigid connection between third bracing piece and the second bracing piece, first steel strand wires have elastic modulus and eccentric distortion's deformation possibility, consequently when fixed frame receives the wind pressure, its effort will be buffered by the deformation of first steel strand wires, with the vibrations moment that effectively reduces the second bracing piece and receive, in order to ensure the structural stability of second bracing piece.

And the deformation direction of the first steel strand is indefinite, so the deformation direction of the first steel strand is adapted to the direction with larger deformation easiness degree as much as possible (such as along the length direction of the sliding chute and not interfering with the second support rod as much as possible), and the direction of the acting force applied to the second support rod by the support rod through the first steel strand is along the length direction of the second support rod as much as possible, so the moment generated by the acting force on the second support rod is smaller, and the breaking probability of the second support rod is effectively reduced.

Optionally, a stress rod is fixed to the sliding block, the stress rod and the third support rod are coaxially arranged, and a gap is formed between an end surface of the stress rod and an end surface of the third support rod; the first steel strand is a spiral braided rope, the section of the first steel strand is of an annular structure, and two ends of the first steel strand are respectively sleeved and fixed on the third supporting rod and the stress rod.

By adopting the technical scheme, the stress between the third support rod and the sliding block is relatively direct by arranging the stress rod, and the deformation amplitude of the first steel strand is effectively reduced, namely the rigidity of the whole structure is improved, so that the condition that the fixed frame violently swings under the action of large wind pressure is reduced; when the fixed frame swings forwards under the action of wind pressure, the supporting rod swings obliquely to a certain degree, namely the supporting rod drives the third supporting rod to rotate to a certain degree so as to tighten the first steel strand, and the first steel strand deforms elastically when tightened, so that the torque of the third supporting rod is buffered and absorbed, and the swinging amplitude of the fixed frame is reduced to a certain degree; and when the first steel strand is screwed up, the elastic modulus of the first steel strand changes, and the rigidity of the first steel strand is improved, so that the first steel strand is not easy to eccentrically twist, and the swing amplitude of the fixing frame is further reduced.

Optionally, a second steel strand is connected between the third support rod and the sliding block, the second steel strand is a spiral braided rope, and the spiral directions of the second steel strand and the first steel strand are opposite; the section of the second steel strand is of an annular structure, and the second steel strand is coaxially sleeved on the peripheral surface of the first steel strand.

Through adopting above-mentioned technical scheme, through setting up the second steel strand wires, receive the wind pressure and during the reverse swing when fixed frame, with screwing up the second steel strand wires (first steel strand wires relax), and elastic deformation when the second steel strand wires are screwed up, thereby carry out the buffer absorption to the moment of torsion of third bracing piece, thereby reduce the swing range of fixed frame to a certain extent, different deformation direction's first steel strand wires and second steel strand wires promptly, with the produced effort of the different swing direction to fixed frame.

And, establish the connection for the cover between first steel strand wires and the second steel strand wires, consequently the two will interfere each other when eccentrically distorting, consequently effectively reduce the deformation degree of eccentric distortion to reduce the offset of third bracing piece, thereby reduce the swing range of fixed frame.

Optionally, the outer circumferential surface of the second steel strand is sleeved with a limiting spring.

By adopting the technical scheme, when the first steel strand or the second steel strand is unscrewed, the outer diameter of the first steel strand or the second steel strand is enlarged, and the sleeved limiting spring can effectively prevent the outer diameter of the steel strand from being enlarged, so that the limiting spring utilizes the self deformation restraining capacity to absorb the acting force applied by the steel strand, and the limiting spring can buffer and absorb the vibration force of the wind pressure borne by the fixing frame; and the limit spring can also reduce the deformation degree of the eccentric distortion of the steel strand so as to reduce the position deviation of the third supporting rod and reduce the swing amplitude of the fixing frame.

Optionally, the sliding block is of a gear structure; the locating part includes spacing, spacing with the second bracing piece slides along the direction of horizontal perpendicular to second bracing piece axle center and is connected, the surface of spacing is first flank of tooth, the tooth on the first flank of tooth is used for cooperating with the tooth's socket of sliding block.

Through adopting above-mentioned technical scheme, when needing to adjust the position of the relative second bracing piece of sliding block, at first ensure spacing to the state of disengaging to remove the spacing to the sliding block, then remove the sliding block to suitable position, then the spacing of sliding for the tooth card of first flank of tooth on it goes into in the tooth's socket of sliding block, thereby to the restriction of the position of sliding block.

Optionally, the surface of the limiting strip, which deviates from the first tooth surface, is set as a second tooth surface, a rack for the second tooth surface of the limiting strip to be matched with the sliding direction of the rack is arranged in the sliding groove, and the sliding groove is further provided with an avoiding area for the limiting strip to slide to be separated from the rack.

By adopting the technical scheme, when the limiting strip is positioned in the avoidance area, the limiting strip can slide for a small distance relative to the length direction of the second support rod, the limiting strip still keeps the meshing block with the sliding block at the moment, and then the limiting strip slides along the length direction of the second support rod to drive the sliding block to rotate for a certain angle, so that the first steel strand or the second steel strand is screwed up to apply prestress, and the bearing rigidity of the whole structure is improved; after the prestress is applied, the limiting strip can be reset to be matched with the rack, so that the position of the limiting strip is locked, the position of the sliding block is locked, and the adjustment is completed.

Optionally, the position fixing between the middle part of fixed frame and the lower part has the bearing, just the bearing housing is located on the first bracing piece, fixed frame with first bracing piece passes through the bearing and rotates the connection.

Through adopting above-mentioned technical scheme, can make fixed frame receive the shaking force of wind pressure and can comparatively directly transmit to branch on to reduce the damage of fixed frame swing in-process to first bracing piece.

The application also provides an LED display screen, which adopts the following technical scheme:

an LED display screen comprises an LED display screen body and a bearing base.

In summary, the present application includes at least one of the following beneficial technical effects:

the display angle of the LED display screen on the fixing frame is changed by adjusting the inclination angle of the fixing frame, so that a good display effect is realized;

the first steel strand is arranged, so that the third support rod is in non-rigid connection with the second support rod, and the vibration moment borne by the second support rod is effectively reduced, so that the structural stability of the second support rod is ensured; the direction of acting force applied to the second support rod by the support rod through the first steel strand is as far as possible along the length direction of the second support rod, so that the breaking probability of the second support rod is effectively reduced;

the first steel strand and the second steel strand in different deformation directions are arranged, so that acting forces generated in different swinging directions of the fixing frame are buffered.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is a schematic view of the back surface of the load-bearing base of embodiment 1.

FIG. 3 is a schematic view of the entire structure of embodiment 2.

Fig. 4 is a sectional view showing the connection relationship between the third support bar and the slide block according to embodiment 2.

Fig. 5 is a partial sectional view for embodying the internal structure of a second support bar according to embodiment 2.

Description of reference numerals: 1. a fixing frame; 2. supporting legs; 4. a slider; 10. an LED display screen body; 11. a grid plate; 12. a rubber strip; 13. a water discharge tank; 20. a load bearing base; 21. a first support bar; 211. a bearing; 22. a second support bar; 221. a chute; 222. a through groove; 223. a groove is formed; 224. an avoidance zone; 23. a third support bar; 231. a boss; 232. a first through hole; 233. a second through hole; 234. rope clamping; 24. a strut; 31. a first hoop; 32. a second hoop; 33. a third hoop; 34. a fourth hoop; 41. a stress beam; 42. a rack; 43. a limiting strip; 431. a first tooth surface; 432. a second tooth surface; 44. an operating lever; 51. a first steel strand; 52. a second steel strand; 53. and a limiting spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment 1 of the application discloses an LED display screen. Referring to fig. 1, the display device comprises an LEDdisplay screen body 10 and abearing base 20, wherein the bearingbase 20 is used for installing and fixing the LEDdisplay screen body 10, and can adjust the display angle of the LEDdisplay screen body 10 to improve the display effect.

As shown in fig. 1, the load-bearing base 20 includes a fixed frame 1 and a support frame for supporting the fixed frame 1, wherein a circle ofrubber strip 12 is bonded to the inner wall of the fixed frame 1, and the top surface and the side surface of the fixed frame 1 are both provided with drainage channels communicated with each other to drain rainwater retained at the top of the fixed frame 1. The front of the fixing frame 1 is provided with a grid plate 11, and the grid plate 11 can be made of transparent acrylic material or transparent glass material.

Through installing LEDdisplay screen body 10 in fixed frame 1,rubber strip 12 is located the edge of LEDdisplay screen body 10 this moment to play the effect of shock attenuation protection LEDdisplay screen body 10, then cover grid plate 11, with the spacing LEDdisplay screen body 10 of further protection.

When the LEDdisplay screen body 10 needs to be overhauled, replaced or replaced with an LED light box structure, the LEDdisplay screen body 10 can be taken down, then the LED light source is installed in the fixing frame 1, and the advertising light box cloth is laid on the inner surface of the grid plate 11, so as to realize the switching from the LED display screen to the LED light box, and the universality is strong.

As shown in fig. 2, the supporting frame includes two vertically disposed supporting legs 2, a first supportingrod 21 is fixedly connected between the two supporting legs 2, the first supportingrod 21 is horizontally disposed, twothird hoops 33 are fixed at positions between the middle portion and the lower portion of the back of the fixing frame 1, and the first supportingrod 21 is surrounded by thethird hoops 33, that is, the fixing frame 1 can rotate by a certain angle by taking the first supportingrod 21 as an axis.

As shown in fig. 2, twosupport rods 24 are hinged to the back of the fixed frame 1, athird support rod 23 is disposed between the ends of the twosupport rods 24 far away from the fixed frame 1, thethird support rod 23 is parallel to thefirst support rod 21, afirst anchor ear 31 is fixed to the end of thesupport rod 24 far away from the fixed frame 1, and thethird support rod 23 is surrounded by thefirst anchor ear 31.

As shown in fig. 2, the supporting leg 2 is fixed with a second supportingrod 22, the second supportingrod 22 is perpendicular to the horizontal plane of the first supportingrod 21, the end of the third supportingrod 23 is fixed with asecond hoop 32, thesecond hoop 32 is a limiting member, and thesecond hoop 32 is used for fixing the second supportingrod 22 in an encircling manner.

When the demonstration angle of needs to LEDdisplay screen body 10 is adjusted, at first, utilize the rotation of fixed frame 1, with the inclination of the fixed frame 1 of adjustment, then through the articulated ofbranch 24, slide with the relative second bracingpiece 22 of secondstaple bolt 32 that drives on the third bracingpiece 23, treat to slide to suitable distance after, lock in proper order and hold secondstaple bolt 32 tightly,first staple bolt 31, make third bracingpiece 23 fixed mutually with second bracingpiece 22,branch 24 is fixed mutually with third bracingpiece 23, thereby make whole triangle bearing structure who becomes the steadiness, and then accomplish the angle modulation of LEDdisplay screen body 10, and then realize good display effect.

And the supporting leg 2 is also provided with afourth hoop 34, and thefourth hoop 34 is connected with the bottom of the fixed frame 1 so as to reinforce the fixed frame 1 with the display state adjusted again.

In embodiment 2, different arrangements are made with respect to embodiment 1, and mainly for optimizing and improving the wind and earthquake resistance of the load-bearing base 20, as shown in fig. 3, thethird anchor ear 33 is replaced by abearing 211, wherein an outer ring of thebearing 211 is fixedly connected with the back surface of the fixed frame 1, and an inner ring of thebearing 211 is fixed on thefirst support rod 21 in a sleeved manner, that is, the fixed frame 1 is rotatably connected with thefirst support rod 21 through thebearing 211.

As shown in fig. 3 and 4, aboss 231 is protruded from the outer wall of thethird support bar 23, and thesupport bar 24 is integrally connected with the outer wall of theboss 231; the inside of thesecond support rod 22 is provided with a slidinggroove 221, the slidinggroove 221 extends along the length direction of thesecond support rod 22, the surface of thesecond support rod 22 opposite to the othersecond support rod 22 is provided with a throughgroove 222, the throughgroove 222 is communicated with the slidinggroove 221, and the width of the throughgroove 222 is smaller than that of the slidinggroove 221.

As shown in fig. 4, a slidingblock 4 is disposed in the slidingslot 221, the slidingblock 4 is of a gear structure, astress rod 41 extending toward thethird support rod 23 is fixed at an axis of the slidingblock 4, thestress rod 41 is located in the throughslot 222, thestress rod 41 and thethird support rod 23 are coaxially disposed, and a gap is formed between an end surface of thestress rod 41 and an end surface of thethird support rod 23.

Be equipped with first steel strand 51,second steel strand 52 between slidingblock 4 and theboss 231, wherein first steel strand 51 is woven for the stranded wire spiral and forms, first steel strand 51 is the loop configuration for the section, the both ends of first steel strand 51 are established respectively on the tip of third bracingpiece 23 andstress bar 41, and the first through-hole 232 of seting up onboss 231 and the slidingblock 4 is all passed to every strand of first steel strand 51, and the end of passing of this strand is fixed withrope clip 234, utilize the spacing ofrope clip 234 in order to realize fixing of first steel strand 51.

Thesecond steel strand 52 is also formed by spirally weaving multiple strands, the spiral turning directions of thesecond steel strand 52 and the first steel strand 51 are opposite, the section of thesecond steel strand 52 is of an annular structure, thesecond steel strand 52 is sleeved on the outer peripheral surface of the first steel strand 51, each strand of thesecond steel strand 52 penetrates through theboss 231 and the second throughhole 233 formed in the slidingblock 4, the penetrating end of each strand is fixed with therope clamp 234, and thesecond steel strand 52 is fixed by means of limiting of therope clamp 234.

Meanwhile, the outer peripheral surface of thesecond steel strand 52 is also sleeved with a limitingspring 53, namely the limitingspring 53 is sleeved after the installation of the same end of the first steel strand 51 and thesecond steel strand 52 is finished, and finally the installation of the other end of the first steel strand 51 and the other end of thesecond steel strand 52 is finished. Because the limitingspring 53 is located in the throughgroove 222, the outer wall of the limitingspring 53 is abutted to the inner groove wall of the throughgroove 222, so that the slidingblock 4 is suspended in the slidinggroove 221.

As shown in fig. 4 and 5, the inner top wall and the inner bottom wall of the slidinggroove 221 are both fixed with arack 42, therack 42 extends along the length direction of thesecond support rod 22, the vertical projection of therack 42 is located on the slidingblock 4, and a space is formed between therack 42 and the slidingblock 4; still be equipped with two spacingstrips 43 that relative setting from top to bottom in thespout 221, spacingstrip 43 is parallel withrack 42, and the opposite face of two spacingstrips 43 all establishes tofirst flank 431, and the tooth on thefirst flank 431 is used for cooperating with the tooth's socket of slidingblock 4, and the back of the body of two spacingstrips 43 establishes tosecond flank 432, and the tooth ofsecond flank 432 is used for cooperating withrack 42.

The operatingrod 44 is fixed on the limitingstrip 43, the operatingrod 44 passes through the runninggroove 223 formed in thesecond support rod 22 and is located outside, the runninggroove 223 extends along the length direction of thesecond support rod 22, namely, the operatingrod 44 can control the limitingstrip 43 to slide along the length direction of thesecond support rod 22, or slide along the width direction of thesecond support rod 22, namely, the operatingrod 44 can switch the position state of the limitingstrip 43.

When the display angle of the LEDdisplay screen body 10 needs to be adjusted, firstly, the control lever is used to move the limitingbar 43 into the avoidingregion 224, and meanwhile, the limitingbar 43 is not matched with therack 42 and the slidingblock 4, that is, the slidingblock 4 is in a free state, and the slidingblock 4 can slide relative to thesecond support rod 22; then, the rotation of the fixed frame 1 is utilized to adjust the inclination angle of the fixed frame 1, and then thethird support rod 23 and the slidingblock 4 are driven to slide for a certain distance along the slidinggroove 221 by the hinge joint of thesupport rod 24.

After the slidingblock 4 slides to a proper position, the operatingrod 44 is used for moving the limitingstrip 43 close to the throughgroove 222, so that thefirst tooth surface 431 of the limitingstrip 43 is meshed with the teeth of the slidingblock 4, thesecond tooth surface 432 is meshed with therack 42, the slidingblock 4 is relatively fixed with the second supportingrod 22 at the moment, the whole structure is made to be a stable triangular supporting structure, the angle adjustment of the LEDdisplay screen body 10 is further completed, and a good display effect is further achieved.

When the LED display screen is installed in outdoor environment and receives great wind pressure, fixed frame 1 is easily reciprocal violent swing, and through the setting of first steel strand wires 51 and secondsteel strand wires 52 in this embodiment, make to be non-rigid connection between third bracingpiece 23 and the second bracingpiece 22, and first steel strand wires 51 have elastic modulus and the deformation possibility of eccentric distortion, consequently when fixed frame 1 receives the wind pressure, its effort will be cushioned by the deformation of first steel strand wires 51, with the vibration moment that effectively reduces second bracingpiece 22 and receive, in order to ensure the structural stability of second bracingpiece 22.

In the process that the fixed frame 1 swings back and forth, the first steel strand 51 or thesecond steel strand 52 is driven to be screwed, and the first steel strand 51 or thesecond steel strand 52 deforms elastically when being screwed, so that the torque of thethird support rod 23 is buffered and absorbed, and the swinging amplitude of the fixed frame 1 is reduced to a certain extent; when the first steel strand 51 or thesecond steel strand 52 is tightened, the elastic modulus of the first steel strand changes, and the rigidity of the second steel strand itself is improved, so that the rigidity of the entire support structure is improved, and the swing range of the fixed frame 1 is further reduced.

When the first steel strand 51 or thesecond steel strand 52 is used for a long time and the rigidity of the first steel strand is weakened, the following operations can be performed to improve the rigidity and the prestress, specifically: theoperation rod 44 drives thelimit strip 43 to slide to theavoidance area 224 on the slidinggroove 221 along the width direction of thesecond support rod 22, at this time, thelimit strip 43 is separated from therack 42, thelimit strip 43 is meshed with the slidingblock 4, then theoperation rod 44 drives thelimit strip 43 to slide along the length direction of thesecond support rod 22, and the slidingblock 4 is driven to rotate by a certain angle through meshing, so that the first steel strand 51 or thesecond steel strand 52 is screwed, prestress is applied, and the bearing rigidity of the whole structure is improved; after the prestress is applied, the limitingstrip 43 can be reset to be matched with therack 42 again, so that the limitingstrip 43 is locked, the slidingblock 4 is locked, and the adjustment is completed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A bearing base is characterized in that: the supporting frame comprises a fixed frame (1) and a supporting frame for supporting the fixed frame (1), the supporting frame comprises two supporting legs (2), a first supporting rod (21) is connected between the two supporting legs (2), the supporting legs (2) are also provided with a second supporting rod (22), and the second supporting rod (22) is vertically arranged in the horizontal plane of the first supporting rod (21); the fixed frame (1) is connected with the first supporting rod (21) in a rotating mode around the axis of the first supporting rod (21), the fixed frame (1) is connected with supporting rods (24) which are arranged corresponding to the second supporting rod (22) in a hinged mode, the free ends of the two supporting rods (24) are connected with a third supporting rod (23) together, the third supporting rod (23) is arranged with the second supporting rod (22) in a sliding mode along the length direction of the second supporting rod (22), and a limiting piece used for limiting the third supporting rod (23) to slide is arranged between the third supporting rod (23) and the second supporting rod (22).

2. The load bearing base of claim 1, wherein: the end part of the support rod (24) is provided with a first hoop (31) which encircles the third support rod (23); the locating part includes second staple bolt (32), third bracing piece (23) with the outer wall fixed connection of second staple bolt (32), second staple bolt (32) with second bracing piece (22) encircle fixedly.

3. The load bearing base of claim 1, wherein: spout (221) have been seted up along self length direction in second bracing piece (22), the tip of third bracing piece (23) is equipped with sliding block (4), third bracing piece (23) with connect through first steel strand wires (51) between sliding block (4), sliding block (4) with spout (221) slide and connect, the locating part is used for the restriction sliding of sliding block (4).

4. The load bearing base of claim 3, wherein: a stress rod (41) is fixed on the sliding block (4), the stress rod (41) and the third supporting rod (23) are coaxially arranged, and a gap is formed between the end surface of the stress rod (41) and the end surface of the third supporting rod (23); the first steel strand (51) is a spiral braided rope, the section of the first steel strand (51) is of an annular structure, and two ends of the first steel strand (51) are respectively sleeved and fixed on the third supporting rod (23) and the stress rod (41).

5. The load bearing base of claim 4, wherein: a second steel strand (52) is connected between the third support rod (23) and the sliding block (4), the second steel strand (52) is a spiral braided rope, and the spiral directions of the second steel strand (52) and the first steel strand (51) are opposite; the section of the second steel strand (52) is of an annular structure, and the second steel strand (52) is coaxially sleeved on the peripheral surface of the first steel strand (51).

6. The load bearing base of claim 5, wherein: and a limiting spring (53) is sleeved on the peripheral surface of the second steel strand (52).

7. The load bearing base of claim 5, wherein: the sliding block (4) is of a gear structure; the locating part includes spacing strip (43), spacing strip (43) with second bracing piece (22) slide along the horizontal perpendicular to second bracing piece (22) axle center direction and be connected, the surface of spacing strip (43) is first flank of tooth (431), the tooth on the first flank of tooth (431) is used for cooperating with the tooth's socket of sliding block (4).

8. The load bearing base of claim 7, wherein: the surface of the limiting strip (43) departing from the first tooth surface (431) is set as a second tooth surface (432), a rack (42) which is used for matching the second tooth surface (432) of the limiting strip (43) along the self sliding direction is arranged in the sliding groove (221), and an avoiding area (224) which is used for enabling the limiting strip (43) to slide to be separated from the rack (42) is further arranged in the sliding groove (221).

9. The load bearing base of claim 3, wherein: the utility model discloses a fixed frame, including fixed frame (1), bearing (211) and first bracing piece (21), the position fixing between the middle part of fixed frame (1) and the lower part has bearing (211), just bearing (211) cover is located on first bracing piece (21), fixed frame (1) with first bracing piece (21) are passed through bearing (211) and are rotated the connection.

10. An LED display screen, its characterized in that: comprising an LED display screen body (10) and a carrying base (20) according to claim 1.

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