Fabricated discharging platform for high-rise building construction

Abstract

The invention relates to the technical field of unloading platforms for building construction, and discloses an assembly type unloading platform for high-rise building construction, which comprises a guardrail mechanism, a fixer, a steel cable, a supporting structure, a splice plate and a fixing block. According to the device, the supporting structures are arranged on the left side and the right side of the I-shaped steel and abut against the I-shaped steel connected with the supporting structures after the rotating rods are rotated, supporting plates on the left side and the right side of the I-shaped steel abut against the left side and the right side of the I-shaped steel, and the I-shaped steel is prevented from shaking left and right, a blocking plate moves downwards to abut against the surfaces of the I-shaped steel, and four steel plates fix the two pieces of I-shaped steel in a quadrilateral mode and abut against the upper surfaces of the I-shaped steel; a gap is prevented from being generated between the steel plate and the I-shaped steel during gravity unloading of the supporting structure, the situation that the supporting structure is suspended and easily shakes during gravity unloading is avoided, and the stability of a fixed point is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction unloading platforms, in particular to an assembled unloading platform used for high-rise building construction. Background Art

[0002] During the construction of high-rise buildings, materials on the ground need to be transported to higher floors. In order to facilitate the transportation of materials, lifting machinery is used to lift them and unloading them on the unloading platform. Since materials need to be transported on each floor of the high-rise building, the unloading platform used to transfer materials is installed and fixed by means of steel cantilevers, and the unloading platform is assembled and fixed to form, which facilitates the transfer of the unloading platform to other floors for installation during the construction of high-rise buildings.

[0003] However, during assembly, the bottom of the platform is suspended to the upper level by steel cables and fixed to the building level by steel sections. The steel sections are fixed by pins. When materials are unloaded, gravity presses on the platform, which can easily cause the steel sections and the pins to loosen. When it is fixed, the material unloaded on the unloading platform is pressed by gravity, and the pressure will be reduced after the transfer. The pressure change can easily cause the platform to shake under the action of the gap, resulting in instability during unloading. The guardrails on both sides of the platform are spliced ​​in a joint manner. When the material is heavier, according to the principle of leverage, the suspended part of the platform cannot be too long, otherwise the pressure on the fixed point will be too great. The length of the guardrails on both sides of the platform is fixed. When the material is heavier, the platform needs to be adjusted inward. At this time, the guardrails on both sides will move in the building, and then the guardrails will move too long after moving, which will affect the loading and unloading of the platform. The use of slatted guardrails has a large gap and the stability is weaker, and the guardrails on both sides of the platform cannot be flexibly adjusted. Summary of the invention

[0004] The present invention provides an assembled unloading platform for high-rise building construction, which overcomes the shortcomings described in the background technology.

[0005] The technical solution adopted by the present invention to solve its technical problem is: An assembled unloading platform for high-rise building construction, comprising a guardrail mechanism, a fixer, a steel cable, a support structure, a splicing plate, and a fixing block, wherein the steel cable is fixed inside the fixing block, the fixing block is arranged outside the support structure, and the steel cable is obliquely suspended on the superstructure, the guardrail mechanism is assembled on the upper end of the support structure, the splicing plate is arranged inside the support structure, and the support structure is horizontally fixed on the high-rise building through the fixer; The fixer is provided with a rotating rod, a steel plate, an I-shaped steel, a supporting plate and a blocking plate. The blocking plate is arranged on the inner side of the middle of the steel plate, and the lower end of the steel plate is pre-embedded and cast in the building concrete. The two I-shaped steels are arranged in parallel at the side ends of the supporting structure and pass through the steel plate. When the rotating rod rotates, the rotating rod pushes out toward the steel plates on the left and right sides, and makes the supporting plate press against the side of the I-shaped steel. The blocking plate presses against the surface of the I-shaped steel, so that the I-shaped steel is pressed into contact with the steel plate.

[0006] A better technical solution: the support plate is provided with a fixed plate, a friction plate, an arc-shaped strip, an elastic plate, a compression structure, and a bending plate. The fixed plate is arranged on the side of the bending plate, and the two fixed plates are symmetrically distributed with the compression structure as the center. The friction plate is attached to the outside of the elastic plate and presses against the left and right sides of the I-shaped steel. The elastic plate is arranged on the upper and lower sides of the compression structure. When the arc-shaped strip is pressed by the rotating rod, the arc-shaped strip presses the compression structure, so that the compression structure is compressed on the inner side of the steel plate, and drives the compression structure to squeeze the middle of the bending plate, so that the bending plate moves toward the middle under the support of the fixed plate, and drives the friction plate on the side of the elastic plate to press against the left and right sides of the I-shaped steel.

[0007] A better technical solution: the friction plate is made of soft plastic material, and the elastic plate is made of plastic material and can bend. The connection between the elastic plate and the compression structure is driven to move, and the side of the elastic plate is pushed out by the bending plate. The two forces have different directions. At this time, the elastic plate rotates around the connection of the compression structure as the center, and drives the friction plate to press against the I-shaped steel under its elasticity.

[0008] A better technical solution: the rotating rod is provided with a limit rod, a connecting ring, and an arc block. The limit rod passes through the inside of the I-shaped steel, the connecting ring is arranged on the outside of the limit rod, and the arc block is arranged on both sides of the connecting ring symmetrically, and the middle of the outside of the arc block is arc-shaped. When the limit rod rotates, the arc block outside the connecting ring is pressed against the support plate, and the support plate is pushed outward, so that the support plate is compressed against the arc position of the arc block.

[0009] A better technical solution: The compression structure is provided with a spring rod, a metal rod, a force block, a connecting block, and a plane plate. The left and right ends of the spring rod are arranged on both sides of the connecting block and the force block, and are fixed to the inner side of the steel plate through the connecting block. The metal rod is fixed to the inner sides of the two force blocks, and the plane plate is arranged on the outer side of the force block. When the plane plate is supported by the rotating rod, the plane plate is compressed toward the spring rod and drives the metal rod to press the bending plate.

[0010] A better technical solution: the blocking plate is provided with a screw, an iron plate, a load-bearing plate, and a rubber strip. The two screw threads pass through the load-bearing plate, and the bearing is connected to the inside of the iron plate. The load-bearing plate is arranged in the middle of the steel plate. When the screw rotates, it drives the iron plate to move downward, and makes the rubber strips equidistantly arranged at the lower end of the iron plate press against the surface of the I-shaped steel.

[0011] A better technical solution: the guardrail mechanism is provided with an assembly plate, a deformation plate, a bolt rod, and a support rod. The bolt rod passes through the support rod and the assembly plate, and the outer end of the bolt rod is threaded. The support rod slides inside the support structure, and the deformation plates are equidistantly arranged between the assembly plates. When the outer end thread of the bolt rod rotates, the nut drives the support rod to slide inside the support structure and pushes the assembly plate to move to compress the deformation plate.

[0012] A preferred technical solution: There are two support rods, and one of the support rods is fixedly arranged at the outermost end of the support structure, and the lower end of the other support rod can slide with the support structure having a hollow convex interior.

[0013] A better technical solution: the deformation plate is provided with a telescopic rod, a connecting rod, a hinge shaft, and a sponge board. The telescopic rod connects the spaced hinge shafts in a straight line. The connecting rod is connected to the side of the hinge shaft. The sponge board is filled on the outside of the hinge shaft. The hinge shaft is arranged on the inside of the assembly plate. When the assembly plate compresses the deformation plate, the hinge shaft drives the connecting rod to push outward and causes the hinge shaft to compress the telescopic rod in a straight line.

[0014] Compared with the prior art, this technical solution has the following advantages: In the present invention, the steel plate is embedded in the concrete and supports the supporting structure in a suspended manner. After the rotating rod is rotated, the I-shaped steel connected to the supporting structure is supported, so that the support plates on the left and right sides of the I-shaped steel press the left and right sides of the I-shaped steel to prevent the I-shaped steel from shaking left and right. In the present invention, the blocking plate moves downward to press against the surface of the I-shaped steel, wherein four steel plates are in a quadrilateral to fix two I-shaped steels and support the upper surface of the I-shaped steel to prevent a gap from being generated between the steel plate and the I-shaped steel during gravity unloading of the supporting structure, thereby avoiding the supporting structure being suspended and easily shaking during gravity unloading, thereby achieving stability of the fixed point.

[0015] In the present invention, the two bolt rods pass through the assembly plate and the deformation plate, and when the thread on the outer end of the bolt rod rotates, a support rod is driven to slide on the support structure and compress the deformation plate. When the deformation plate is compressed, the telescopic rod drives the spaced hinge shafts to be linearly compressed against each other and push the hinge shafts outward, thereby adjusting the suspended length according to the weight of the material, and adjusting the length of the guardrail mechanisms on both sides to achieve a flexible adjustment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 This is an overall diagram of the present invention.

[0018] Figure 2 A plan view of the fixator.

[0019] Figure 3A three-dimensional schematic diagram of a support plate.

[0020] Figure 4 It is a three-dimensional schematic diagram of the rotating rod.

[0021] Figure 5 It is a three-dimensional schematic diagram of the compression structure.

[0022] Figure 6 A three-dimensional schematic diagram of a blocking plate.

[0023] Figure 7 It is a plan view of the guardrail mechanism.

[0024] Figure 8 It is a plan view of the deformed plate.

[0025] In the figure: guardrail mechanism-1, fixer-2, steel cable-3, support structure-4, splicing plate-5, fixing block-6, rotating rod-21, steel plate-22, I-shaped steel-23, support plate-24, blocking plate-25.

[0026] Fixed plate 241, friction plate 242, arc strip 243, elastic plate 244, compression structure 245, bending plate 246.

[0027] Limit rod-211, connecting ring-212, arc block-213.

[0028] Spring rod-2451, metal rod-2452, force block-2453, connecting block-2454, flat plate-2455.

[0029] Screw-251, iron plate-252, load-bearing plate-253, rubber strip-254.

[0030] Assembling plate-11, deformation plate-12, bolt rod-13, support rod-14, telescopic rod-121, connecting rod-122, hinge shaft-123, sponge plate-124. DETAILED DESCRIPTION

[0031] like Figures 1 to 8 As shown, the present invention proposes an assembled unloading platform for high-rise building construction, including a guardrail mechanism 1, a fixer 2, a steel cable 3, a support structure 4, a splicing plate 5, and a fixing block 6. The steel cable 3 is fixed inside the fixing block 6, and the fixing block 6 is arranged outside the support structure 4, and the steel cable 3 is obliquely suspended on the superstructure. The guardrail mechanism 1 is assembled on the upper end of the support structure 4, and the splicing plate 5 is arranged inside the support structure 4. The support structure 4 is horizontally fixed to the high-rise building through the fixer 2; The fixer 2 is provided with a rotating rod 21, a steel plate 22, an I-shaped steel 23, a supporting plate 24, and a blocking plate 25. The blocking plate 25 is arranged on the inner side of the middle of the steel plate 22, and the lower end of the steel plate 22 is pre-embedded and cast in the building concrete. The two I-shaped steels 23 are arranged in parallel at the side ends of the supporting structure 4 and pass through the steel plate 22. When the rotating rod 21 rotates, the rotating rod 21 is pushed out to the steel plates 22 on the left and right sides, and the supporting plate 24 is pressed against the side of the I-shaped steel 23. The blocking plate 25 presses against the surface of the I-shaped steel 23, so that the I-shaped steel 23 is pressed and contacted with the steel plate 22.

[0032] The platform formed by the support structure 4 in the present invention is fixed in the concrete through the lower part of the steel plate 22, and is suspended from the superstructure by the inclined steel cable 3 to form a triangular fixation, wherein the steel plate 22 is pre-buried in the concrete and suspends and supports the support structure 4, and after the rotating rod 21 is rotated, the I-shaped steel 23 connected to the support structure 4 is resisted, so that the support plates 24 on the left and right sides of the I-shaped steel 23 press the left and right sides of the I-shaped steel 23 to prevent the I-shaped steel 23 from shaking left and right, and the blocking plate 25 in the present invention moves downward to resist the surface of the I-shaped steel 23, wherein the four steel plates 22 are in a quadrilateral to fix two I-shaped steels 23, and support the upper surface of the I-shaped steel 23, to prevent the support structure 4 from generating a gap between the steel plate 22 and the I-shaped steel 23 during gravity unloading, to avoid the support structure 4 being suspended and easy to shake during gravity unloading, and to achieve stability of the fixed point.

[0033] Among them, the support plate 24 is provided with a fixed plate 241, a friction plate 242, an arc strip 243, an elastic plate 244, a compression structure 245, and a bending plate 246. The fixed plate 241 is arranged on the side of the bending plate 246, and the two fixed plates 241 are symmetrically distributed with the compression structure 245 as the center. The friction plate 242 is attached to the outside of the elastic plate 244 and abuts against the left and right sides of the I-shaped steel 23. The elastic plate 244 is arranged on the upper and lower sides of the compression structure 245. When the arc strip 243 is abutted by the rotating rod 21, the arc strip 243 presses the compression structure 245, so that the compression structure 245 is compressed on the inner side of the steel plate 22, and drives the compression structure 245 to squeeze the middle of the bending plate 246, so that the bending plate 246 moves toward the middle under the support of the fixed plate 241, and drives the friction plate 242 on the side of the elastic plate 244 to abut against the left and right sides of the I-shaped steel 23.

[0034] In addition, the friction plate 242 is made of soft plastic material, and the elastic plate 244 is made of plastic material and can be bent. The connection between the elastic plate 244 and the compression structure 245 is driven to move, and the side of the elastic plate 244 is pushed out by the bending plate 246. The directions of the two forces are different. At this time, the elastic plate 244 rotates around the connection with the compression structure 245, and drives the friction plate 242 to press the I-shaped steel 23 under its elasticity.

[0035] Among them, the rotating rod 21 is provided with a limiting rod 211, a connecting ring 212, and an arc block 213. The limiting rod 211 passes through the inside of the I-shaped steel 23, and the connecting ring 212 is arranged on the outside of the limiting rod 211. The arc block 213 is arranged on both sides of the connecting ring 212 symmetrically up and down, and the middle of the outer side of the arc block 213 is arc-shaped. When the limiting rod 211 rotates, the arc block 213 outside the connecting ring 212 is pressed against the support plate 24, and the support plate 24 is pushed outward, so that the support plate 24 is compressed against the arc position of the arc block 213.

[0036] Among them, the compression structure 245 is provided with a spring rod 2451, a metal rod 2452, a force block 2453, a connecting block 2454, and a plane plate 2455. The left and right ends of the spring rod 2451 are arranged on both sides of the connecting block 2454 and the force block 2453, and are fixed to the inner side of the steel plate 22 through the connecting block 2454. The metal rod 2452 is fixed on the inner sides of the two force blocks 2453. The plane plate 2455 is arranged on the outer side of the force block 2453. When the plane plate 2455 is supported by the rotating rod 21, the plane plate 2455 is compressed toward the spring rod 2451, and drives the metal rod 2452 to press against the bending plate 246.

[0037] In the present invention, after the steel plate 22 passes through the steel plate 22, the limit rod 211 in the middle position of the I-shaped steel 23 is rotated by a screw tool, and the arc block 213 is driven to push out the arc strip 243 on the left and right sides, driving the flat plate 2455 to move toward the steel plate 22, and under the compression of the spring rod 2451, the metal rod 2452 presses the middle of the bending plate 246. At this time, the bending plate 246 is subjected to force in the middle and is bent under the support of the two fixed plates 241, driving the friction plate 242 connected to the elastic plate 244 to press against the left and right sides of the I-shaped steel 23 to prevent a gap between the I-shaped steel 23 and the steel plate 22.

[0038] Among them, the blocking plate 25 is provided with a screw 251, an iron plate 252, a load-bearing plate 253, and a rubber strip 254. The two screws 251 are threaded through the load-bearing plate 253, and the bearing is connected inside the iron plate 252. The load-bearing plate 253 is arranged in the middle of the steel plate 22. When the screw 251 rotates, it drives the iron plate 252 to move downward, and makes the rubber strips 254 equidistantly arranged at the lower end of the iron plate 252 press against the surface of the I-shaped steel 23.

[0039] In the present invention, the two screw rods 251 are threadedly rotated and drive the rubber strip 254 at the lower end of the iron plate 252 to press the surface of the I-shaped steel 23. With the support of the load-bearing plate 253 connected in the middle of the steel plate 22, the upper surface of the I-shaped steel 23 is pressed, and the lower surface of the I-shaped steel 23 is pressed downward to the concrete surface by the blocking plate 25, preventing the existence of gaps on the upper and lower sides of the I-shaped steel 23, and supporting the gravity of the connection between the outer end of the I-shaped steel 23 and the supporting structure 4, thereby enhancing stability.

[0040] Among them, the guardrail mechanism 1 is provided with an assembly plate 11, a deformation plate 12, a bolt rod 13, and a support rod 14. The bolt rod 13 passes through the support rod 14 and the assembly plate 11, and the outer end of the bolt rod 13 is threadedly matched. The support rod 14 slides inside the support structure 4, and the deformation plates 12 are equidistantly arranged between the assembly plates 11. When the outer end thread of the bolt rod 13 rotates, the nut drives the support rod 14 to slide in the support structure 4, and pushes the assembly plate 11 to move to compress the deformation plate 12.

[0041] Furthermore, two support rods 14 are provided, and one of the support rods 14 is fixedly arranged at the outermost end of the support structure 4, and the lower end of the other support rod 14 can slide with the support structure 4 which is hollow and convex inside.

[0042] Among them, the deformation plate 12 is provided with a telescopic rod 121, a connecting rod 122, a hinge shaft 123, and a sponge board 124. The telescopic rod 121 connects the spaced hinge shafts 123 in a straight line. The connecting rod 122 is connected to the side of the hinge shaft 123. The sponge board 124 is filled on the outside of the hinge shaft 123. The hinge shaft 123 is arranged on the inner side of the assembly plate 11. When the assembly plate 11 compresses the deformation plate 12, the hinge shaft 123 drives the connecting rod 122 to push outward, and causes the hinge shaft 123 to compress the telescopic rod 121 in a straight line.

[0043] In the present invention, the two bolt rods 13 pass through the assembly plate 11 and the deformation plate 12. When the outer end thread of the bolt rod 13 rotates, it drives a support rod 14 to slide on the support structure 4 and compress the deformation plate 12. Under the fixation of the outer end support rod 14, the length of the guardrail mechanism 1 is adjusted according to the required suspended length. When the deformation plate 12 is compressed, the telescopic rod 121 drives the spaced hinge shafts 123 to be linearly compressed against each other and push the hinge shafts 123 outward, thereby adjusting the suspended length according to the weight of the material, and adjusting the length of the guardrail mechanisms 1 on both sides to achieve a flexible adjustment effect.

[0044] In the present invention, two bolt rods 13 penetrate the assembly plate 11 and push the support rod 14 threadedly, and the support rod 14 slides into the support structure 4, achieving better installation and adjustment on both sides of the support structure 4, and preventing the problem of difficult welding and disassembly. The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. An assembled unloading platform for high-rise building construction, characterized in that: The invention comprises a guardrail mechanism (1), a fixing device (2), a steel cable (3), a supporting structure (4), a splicing plate (5), and a fixing block (6), wherein the steel cable (3) is fixed inside the fixing block (6), the fixing block (6) is arranged outside the supporting structure (4), and the steel cable (3) is obliquely suspended on the superstructure, the guardrail mechanism (1) is assembled on the upper end of the supporting structure (4), the splicing plate (5) is arranged inside the supporting structure (4), and the supporting structure (4) is horizontally fixed to the high-rise building through the fixing device (2); The fixing device (2) is provided with a rotating rod (21), a steel plate (22), an I-shaped steel (23), a supporting plate (24), and a blocking plate (25); the blocking plate (25) is arranged on the inner side of the middle of the steel plate (22), and the lower end of the steel plate (22) is pre-embedded and cast in the building concrete; the two I-shaped steels (23) are arranged in parallel at the side ends of the supporting structure (4) and pass through the steel plate (22); when the rotating rod (21) rotates, the rotating rod (21) pushes out toward the steel plates (22) on the left and right sides, and makes the supporting plate (24) press against the side of the I-shaped steel (23); the blocking plate (25) presses against the surface of the I-shaped steel (23), so that the I-shaped steel (23) and the steel plate (22) are pressed and contacted.

2. The assembled unloading platform for high-rise building construction according to claim 1 is characterized in that: The support plate (24) is provided with a fixing plate (241), a friction plate (242), an arc strip (243), an elastic plate (244), a compression structure (245), and a bending plate (246); the fixing plate (241) is arranged on the side of the bending plate (246), and the two fixing plates (241) are symmetrically distributed with the compression structure (245) as the center; the friction plate (242) is attached to the outside of the elastic plate (244) and abuts against the left and right sides of the I-shaped steel (23); the elastic plate (244 ) are arranged on the upper and lower sides of the compression structure (245). When the arc-shaped bar (243) is pressed by the rotating rod (21), the arc-shaped bar (243) presses the compression structure (245), so that the compression structure (245) is compressed inside the steel plate (22), and drives the compression structure (245) to squeeze the middle of the bending plate (246), so that the bending plate (246) moves toward the middle under the support of the fixed plate (241), and drives the friction plate (242) on the side of the elastic plate (244) to press against the left and right sides of the I-shaped steel (23).

3. The assembled unloading platform for high-rise building construction according to claim 1 is characterized in that: The rotating rod (21) is provided with a limiting rod (211), a connecting ring (212), and an arc block (213); the limiting rod (211) passes through the interior of the I-shaped steel (23); the connecting ring (212) is arranged outside the limiting rod (211); the arc block (213) is arranged on both sides of the connecting ring (212) symmetrically up and down, and the middle of the outer side of the arc block (213) is arc-shaped; when the limiting rod (211) rotates, the arc block (213) outside the connecting ring (212) is pressed against the support plate (24), and the support plate (24) is pushed to move outward, so that the support plate (24) is pressed against the arc position of the arc block (213) and compressed.

4. The assembled unloading platform for high-rise building construction according to claim 2 is characterized in that: The compression structure (245) is provided with a spring rod (2451), a metal rod (2452), a force block (2453), a connecting block (2454), and a plane plate (2455). The left and right ends of the spring rod (2451) are arranged on both sides of the connecting block (2454) and the force block (2453), and are fixed to the inner side of the steel plate (22) through the connecting block (2454). The metal rod (2452) is fixed to the inner side of the two force blocks (2453). The plane plate (2455) is arranged on the outer side of the force block (2453). When the plane plate (2455) is supported by the rotating rod (21), the plane plate (2455) is compressed toward the spring rod (2451), and drives the metal rod (2452) to press against the bending plate (246).

5. The assembled unloading platform for high-rise building construction according to claim 1 is characterized in that: The blocking plate (25) is provided with a screw rod (251), an iron plate (252), a bearing plate (253), and a rubber strip (254); the two screw rods (251) are threadedly passed through the bearing plate (253), and a bearing is connected inside the iron plate (252); the bearing plate (253) is arranged in the middle of the steel plate (22); when the screw rod (251) rotates, the iron plate (252) is driven to move downward, and the rubber strips (254) arranged equidistantly at the lower end of the iron plate (252) are pressed against the surface of the I-shaped steel (23).

6. The assembled unloading platform for high-rise building construction according to claim 1, characterized in that: The guardrail mechanism (1) is provided with an assembly plate (11), a deformation plate (12), a bolt rod (13), and a support rod (14); the bolt rod (13) passes through the support rod (14) and the assembly plate (11), and the outer end of the bolt rod (13) is threadedly engaged; the support rod (14) is slidably engaged inside the support structure (4); the deformation plates (12) are equidistantly arranged between the assembly plates (11); when the outer end thread of the bolt rod (13) rotates, the nut drives the support rod (14) to slide inside the support structure (4), and pushes the assembly plate (11) to move and compress the deformation plate (12).

7. The assembled unloading platform for high-rise building construction according to claim 6, characterized in that: Two support rods (14) are provided, and one of the support rods (14) is arranged at the outermost end of the support structure (4) in a fixed state, and the lower end of the other support rod (14) can slide in a limited manner with the support structure (4) having a hollow convex interior.

8. The assembled unloading platform for high-rise building construction according to claim 6, characterized in that: The deformation plate (12) is provided with a telescopic rod (121), a connecting rod (122), a hinge shaft (123), and a sponge board (124); the telescopic rod (121) linearly connects the spaced hinge shafts (123); the connecting rod (122) is connected to the side of the hinge shaft (123); the sponge board (124) is filled on the outside of the hinge shaft (123); the hinge shaft (123) is arranged on the inside of the assembly plate (11); when the assembly plate (11) compresses the deformation plate (12), the hinge shaft (123) drives the connecting rod (122) to push outward, and causes the hinge shaft (123) to linearly compress the telescopic rod (121).

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