Modularized high-strength steel structure trestle

Abstract

The utility model discloses a modularized high-strength steel structure trestle which comprises supporting plates and supporting columns arranged on the surfaces of the supporting plates, prefabricated bridge frames are fixed on the surfaces of the supporting columns, supporting units are arranged on the side faces of the supporting columns, the number of the supporting plates and the number of the supporting columns are both two, and the supporting plates and the supporting columns are symmetrically arranged on the two sides of the prefabricated bridge frames. The prefabricated bridge is connected with the supporting plate through the supporting unit, and the supporting column is connected with the other supporting column through the supporting unit. Through the supporting plates, the supporting columns and the prefabricated bridge frames, the steel structure trestle can be installed in a modularized mode, the trestle has higher flexibility and can be adjusted and changed according to requirements, meanwhile, if the trestle needs to be dismantled or moved in the future, dismantling of the modularized structure is relatively simple, and cost is low. And meanwhile, due to the modular design, all the components can be manufactured in advance and only need to be assembled on site, the construction period is remarkably shortened, and interference to the surrounding environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel structure trestle technical field, concretely is a kind of modularization high-strength steel structure trestle. BACKGROUND

[0002] Trestle is the temporary bridge type structure for loading and unloading goods or up and down passengers or construction site traffic, mechanical arrangement and overhead operation, is divided into wood trestle and steel trestle according to the material used, and is widely used in station, port, mine or factory;The trestle in prior art is inconvenient to install when in use, so that the trestle is not only time-consuming and laborious during installation, affects work rate, and the structural stability of the trestle is poor, and structural fracture easily occurs under vibration impact. Therefore, we provide a kind of modularization high-strength steel structure trestle and its construction method to solve the above problems. SUMMARY

[0003] The utility model discloses a kind of modularization high-strength steel structure trestle to make up for the deficiency of prior art, it solves the existing steel structure trestle installation relatively time-consuming, and the structural stability of the trestle is poor, and structural fracture easily occurs under vibration impact.

[0004] The utility model discloses a kind of modularization high-strength steel structure trestle to make up for the deficiency of prior art, it solves the existing steel structure trestle installation relatively time-consuming, and the structural stability of the trestle is poor, and structural fracture easily occurs under vibration impact.

[0005] The first fixing groove is opened in the surface of the support plate, the support unit includes first connecting rod and second connecting rod, the lower end of the second connecting rod is clamped in the first fixing groove, the lower surface of the prefabricated bridge is opened with the first recess corresponding to the second connecting rod, and the upper end of the second connecting rod is clamped in the first recess.

[0006] The support column includes fixing part, second fixed bolt and second fixed groove, one end of the first connecting rod is clamped in the second fixed groove, and the first connecting rod is fixed on the surface of the support column by the second fixed bolt, the lower surface of the support column is opened with the second recess corresponding to the first connecting rod, and the upper end of the first connecting rod is clamped in the second recess.

[0007] The surface of the support unit is provided with fixing assembly and connecting assembly, and the second connecting rod is fixed on the surface of the support plate by the fixing assembly.

[0008] Further, the prefabricated bridge is clamped on the surface of the support column, and the prefabricated bridge is fixed on the surface of the support column through the fixing part, the support column is clamped on the surface of the support plate, and the support column is fixed on the surface of the support plate through the first fixing bolt, and the first connecting rod and the second connecting rod are both provided on the side surface of the support column.

[0009] Further, the fixing assembly comprises a first knob, a first threaded rod arranged on the side surface of the first knob, a threaded tube, a pushing block and a fixing rod, a first transmission cavity is arranged in the second connecting rod, the first knob is arranged on the surface of the second connecting rod, the upper end of the first threaded rod is fixed on the lower surface of the first knob, the lower end of the first threaded rod penetrates through the first transmission cavity through a bearing, the threaded tube is threadedly connected on the surface of the first threaded rod, and the pushing block is fixed on the lower end of the threaded tube.

[0010] Further, the fixing rod is arranged in the first transmission cavity, and the fixing rod is perpendicular to the pushing block, a spring is sleeved on the surface of the fixing rod, a limiting groove is arranged on the surface of the first fixing groove, one end of the fixing rod is clamped in the limiting groove, the fixing rod and the spring are both arranged on the two sides of the pushing block, the side surface of the threaded tube is fixed with a sliding block, a sliding groove is arranged on the surface of the first transmission cavity, and the sliding block is slidably connected in the sliding groove.

[0011] Further, the fixing assembly comprises a first knob, a first threaded rod arranged on the side surface of the first knob, a threaded tube, a pushing block and a fixing rod, a first transmission cavity is arranged in the second connecting rod, the first knob is arranged on the surface of the second connecting rod, the upper end of the first threaded rod is fixed on the lower surface of the first knob, the lower end of the first threaded rod penetrates through the first transmission cavity through a bearing, the threaded tube is threadedly connected on the surface of the first threaded rod, and the pushing block is fixed on the lower end of the threaded tube.

[0012] Further, one end of the second threaded rod is fixed on one end of the rotating shaft, the other end of the second threaded rod is rotatably connected to the inner wall of the second transmission cavity through a bearing, one end of the third threaded rod is fixed on the other end of the rotating shaft, the other end of the third threaded rod is rotatably connected to the inner wall of the second transmission cavity through a bearing, the screw thread directions of the second threaded rod and the third threaded rod are opposite, the threaded cap is threadedly connected on the surface of the second threaded rod, the connecting plate is fixed on the surface of the threaded cap, the connecting plate is rotatably connected with a fixing plate through a rotating shaft and a bearing on the side surface of the connecting plate, and the surface of the fixing plate is provided with a connecting groove corresponding to the first connecting rod and the second connecting rod.

[0013] Compared with the prior art, the modular high-strength steel structure pier has the following beneficial effects:

[0014] One, the utility model discloses through support plate, support column and prefabricated bridge, can modular installation steel structure trestle, make trestle have greater flexibility, can adjust and change according to demand, and simultaneously, if future needs to remove or move, the disassembly of modular structure is relatively simple, and the modular design makes each component can be prefabricated, only needs to carry out assembly on site, significantly shorten the construction cycle, reduce the interference to surrounding environment.

[0015] Two, the utility model discloses through the common action of first connecting rod and second connecting rod, makes prefabricated bridge, support column and support plate form a stable support system, enhances the strength of overall structure, improves bending and shearing capacity, effectively disperses the load exerted on bridge and support column, reduces the influence of concentrated force to single component, thereby improves security, simultaneously through the multiple connecting points of first connecting rod and second connecting rod, guarantee that bridge keeps stable in the use process, and displacement or inclination will not occur.

[0016] Three, the utility model discloses through connecting assembly, can connect two first connecting rods and two second connecting rods respectively, make the interaction between each component more closely, further improve overall strength, and connecting assembly can make first connecting rod and second connecting rod bear load together, ensure that load is evenly distributed in overall structure, reduce local stress concentration, prolong the service life, effectively improve the stress characteristics of bridge under dynamic load, enhance the shock resistance and stability.

[0017] Other advantages, objects and features of the utility model will be set forth in part in the specification which follows, and in part will become apparent to those skilled in the art upon examination of the following specification or can be learned by practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the front view structure schematic diagram of the utility model;

[0020] Figure 3 It is the structure schematic diagram of support column in the utility model;

[0021] Figure 4 It is the structure schematic diagram of support unit of the utility model;

[0022] Figure 5 It is the structure schematic diagram of fixed assembly in the utility model;

[0023] Figure 6It is the structure schematic view of the connecting assembly in the utility model.

[0024] In the drawing,

[0025] 1, support plate, 101, first fixing bolt, 102, first fixing groove, 103, limiting groove,

[0026] 2, support column, 201, fixing piece, 202, second fixing bolt, 203, second fixing groove,

[0027] 3, prefabricated bridge, 4, support unit, 401, first connecting rod, 402, second connecting rod, 403, first transmission bin,

[0028] 5, fixing assembly, 501, first knob, 502, first threaded rod, 503, threaded tube, 504, push block, 505, fixed rod, 506, spring, 507, sliding block,

[0029] 6, connecting assembly, 601, shell, 602, second transmission bin, 603, second knob, 604, first bevel gear, 605, rotating shaft, 606, second bevel gear, 607, second threaded rod, 608, threaded cap, 609, connecting plate, 610, fixed plate, 611, third threaded rod. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a modular high-strength steel structure trestle, including support plate 1 and the support column 2 being set on the surface of support plate 1, support column 2 surface is fixed with prefabricated bridge 3, support column 2 side is provided with support unit 4, support plate 1 and support column 2 are two, and symmetrically set on the two sides of prefabricated bridge 3, prefabricated bridge 3 is connected with support plate 1 by support unit 4, support column 2 is connected with another support column 2 by support unit 4;The utility model can install steel structure trestle by support plate 1, support column 2 and prefabricated bridge 3, so that trestle has greater flexibility, can be adjusted and changed according to demand, and at the same time, if future needs to be removed or moved, the disassembly of modular structure is relatively simple, and simultaneously, modular design makes that each component can be prefabricated, only needs to be assembled on site, significantly shorten construction period, reduce the interference to surrounding environment.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the surface of the support plate 1 is provided with a first fixed groove 102, the support unit 4 includes a first connecting rod 401 and a second connecting rod 402, the lower end of the second connecting rod 402 is clamped in the first fixed groove 102, the lower surface of the prefabricated bridge 3 is provided with a first groove corresponding to the second connecting rod 402, and the upper end of the second connecting rod 402 is clamped in the first groove; the support column 2 includes a fixing piece 201, a second fixed bolt 202 and a second fixed groove 203, one end of the first connecting rod 401 is clamped in the second fixed groove 203, and the first connecting rod 401 is fixed on the surface of the support column 2 through the second fixed bolt 202, the lower surface of the support column 2 is provided with a second groove corresponding to the first connecting rod 401, and the upper end of the first connecting rod 401 is clamped in the second groove; the prefabricated bridge 3 is clamped on the surface of the support column 2, and the prefabricated bridge 3 is fixed on the surface of the support column 2 through the fixing piece 201, the support column 2 is clamped on the surface of the support plate 1, and the support column 2 is fixed on the surface of the support plate 1 through the first fixed bolt 101, the first connecting rod 401 and the second connecting rod 402 are both two, and are both arranged on the side surface of the support column 2, and the first connecting rod 401 is connected with another first connecting rod 401 through the connecting assembly 6; the prefabricated bridge 3, the support column 2 and the support plate 1 form a stable support system through the cooperation of the first connecting rod 401 and the second connecting rod 402, the strength of the overall structure is enhanced, the bending and shearing capacity is improved, the load applied on the bridge and the support column 2 is effectively dispersed, the influence of concentrated force on single component is reduced, thereby the safety is improved, and through the multiple connecting points of the first connecting rod 401 and the second connecting rod 402, the bridge is kept stable during use and displacement or inclination does not occur

[0033] The surface of the support unit 4 is provided with a fixing assembly 5 and a connecting assembly 6, and the second connecting rod 402 is fixed on the surface of the support plate 1 through the fixing assembly 5.

[0034] Please refer to Figure 5The fixing assembly 5 comprises a first knob 501, a first threaded rod 502, a threaded tube 503, a pushing block 504 and a fixing rod 505 arranged at the side of the first knob 501, and a first transmission cavity 403 is arranged in the second connecting rod 402, the first knob 501 is arranged on the surface of the second connecting rod 402, the upper end of the first threaded rod 502 is fixed to the lower surface of the first knob 501, the lower end of the first threaded rod 502 penetrates through the first transmission cavity 403 through a bearing, the threaded tube 503 is threadedly connected to the surface of the first threaded rod 502, and the pushing block 504 is fixed to the lower end of the threaded tube 503; the fixing rod 505 is arranged in the first transmission cavity 403 and is perpendicular to the pushing block 504, a spring 506 is sleeved on the surface of the fixing rod 505, a limiting groove 103 is arranged on the surface of the first fixing groove 102, one end of the fixing rod 505 is clamped in the limiting groove 103, the fixing rod 505 and the spring 506 are both two and are symmetrically arranged on the two sides of the pushing block 504, the sliding block 507 is fixed to the side of the threaded tube 503, the sliding groove is arranged on the surface of the first transmission cavity 403, the sliding block 507 is slidingly connected in the sliding groove, the threaded tube 503 is movably connected in the first transmission cavity 403 through the sliding block 507 and the sliding groove, and the sliding block 507 and the sliding groove are both two and are symmetrically arranged on the two sides of the threaded tube 503; through the fixing assembly 5, the mounting process of the second connecting rod 402 is more rapid and convenient, and the construction efficiency is improved.

[0035] Please refer to Figure 4 and Figure 6The connecting assembly 6 comprises a shell 601 and a second transmission chamber 602 formed in the shell 601, and the second transmission chamber 602 is internally provided with a first bevel gear 604, a rotating shaft 605, a second bevel gear 606, a second threaded rod 607, a third threaded rod 611, a threaded cap 608 and a connecting plate 609; the shell 601 is provided with a second knob 603, the first bevel gear 604 is fixed to the lower surface of the second knob 603 through a rotating shaft and a bearing, the second bevel gear 606 is fixed to the surface of the rotating shaft 605, and the first bevel gear 604 is engaged with the second bevel gear 606; one end of the second threaded rod 607 is fixed to one end of the rotating shaft 605, the other end of the second threaded rod 607 is rotatably connected to the inner wall of the second transmission chamber 602 through a bearing, one end of the third threaded rod 611 is fixed to the other end of the rotating shaft 605, the other end of the third threaded rod 611 is rotatably connected to the inner wall of the second transmission chamber 602 through a bearing, the threaded directions of the second threaded rod 607 and the third threaded rod 611 are opposite, the threaded cap 608 is threadedly connected to the surface of the second threaded rod 607, the connecting plate 609 is fixed to the surface of the threaded cap 608, and the connecting plate 609 is rotatably connected with a fixed plate 610 on the side surface through a rotating shaft and a bearing; the surface of the fixed plate 610 is provided with a connecting groove corresponding to the first connecting rod 401 and the second connecting rod 402; the connecting assembly 6 can connect the two first connecting rods 401 and the two second connecting rods 402, so that the interaction between the components is more close, the overall strength is further improved, the first connecting rod 401 and the second connecting rod 402 can jointly bear the load, the uniform distribution of the load in the overall structure is ensured, the local stress concentration is reduced, the service life is prolonged, the stress characteristics of the bridge under dynamic load are effectively improved, and the shock resistance and stability are enhanced.

[0036] The construction method of the modular high-strength steel structure trestle is as follows,

[0037] Firstly, the supporting plate 1 is placed in the construction area, the lower end of the supporting column 2 is inserted into the surface of the supporting plate 1 and is fixed through the first fixing bolt 101, then the prefabricated bridge 3 is overlapped on the surface of the supporting column 2 and is fixed on the surface of the supporting column 2 through the fixing piece 201, subsequently, one end of the first connecting rod 401 is clamped in the second fixed groove 203 and the other end is clamped in the second groove formed in the lower surface of the supporting column 2 and is fixed through the second fixing bolt 202, then one end of the second connecting rod 402 is clamped in the first fixed groove 102 and the other end is clamped in the first groove formed in the lower surface of the prefabricated bridge 3 and is fixed through the fixing assembly 5, and after the fixing is completed, the two first connecting rods 401 and the two second connecting rods 402 are fixedly connected through the connecting assembly 6;

[0038] When the second connecting rod 402 needs to be fixed, only the first knob 501 needs to be twisted to drive the first threaded rod 502 to rotate, the first threaded rod 502 drives the threaded tube 503 to move, the threaded tube 503 drives the push block 504 fixed to one end thereof to move, since the push block 504 and the surface of the fixed rod 505 are both provided with inclined surfaces, the push block 504 can push the fixed rods 505 on both sides to move synchronously during the movement, when the fixed rod 505 is clamped at one end in the limiting groove 103, the knob can be stopped from being twisted;

[0039] When the two first connecting rods 401 need to be connected and fixed, only the shell 601 needs to be placed above the first connecting rod 401, then the second knob 603 is twisted to drive the first bevel gear 604 to rotate, the first bevel gear 604 drives the second bevel gear 606 to rotate, the second bevel gear 606 drives the rotating shaft 605 and the second threaded rod 607 and the third threaded rod 611 fixed at both ends of the rotating shaft 605 to rotate synchronously, the second threaded rod 607 and the third threaded rod 611 drive the threaded cap 608 to move, the threaded cap 608 drives the connecting plate 609 fixed to the surface thereof to move, thereby driving the fixed plate 610 rotatably connected to the side surface of the connecting plate 609 to move, and further enabling the first connecting rod 401 to be clamped in the connecting groove on the surface of the fixed plate 610.

[0040] The method can reduce the required manual intervention by simplifying the operation and design, thereby reducing the labor cost and improving the economic benefit, the fixing measures between the support plate 1, the support column 2, the prefabricated bridge 3 and the connecting rod ensure the overall stability of the structure, greatly enhance the anti-seismic and bearing capacity, and through the design of the limiting mechanism and the synchronous movement, the stability and reliability of all the connecting components are ensured, the safety hidden danger caused by improper assembly is reduced, when the later maintenance is performed, the construction personnel can easily adjust or replace the connecting assembly 6 without a complex disassembly process, thereby reducing the difficulty and cost of the subsequent maintenance.

[0041] Working principle: first, the staff places the support plate 1 in the construction area, inserts the lower end of the support column 2 into the surface of the support plate 1 and fixes the same by the first fixing bolt 101, then the staff overlaps the prefabricated bridge 3 on the surface of the support column 2 and fixes the same to the surface of the support column 2 by the fixing piece 201, then one end of the first connecting rod 401 is clamped in the second fixing groove 203 and the other end is clamped in the second groove formed in the lower surface of the support column 2 and is fixed by the second fixing bolt 202, then the staff clamps one end of the second connecting rod 402 in the first fixing groove 102 and the other end in the first groove formed in the lower surface of the prefabricated bridge 3 and fixes the same by the fixing assembly 5, after the fixing is completed, the two first connecting rods 401 and the two second connecting rods 402 are fixed and connected by the connecting assembly 6;

[0042] When the second connecting rod 402 needs to be fixed, the staff only needs to twist the first knob 501, drives the first threaded rod 502 to rotate, the first threaded rod 502 drives the threaded tube 503 to move, the threaded tube 503 drives the push block 504 fixed at one end to move, since the push block 504 and the surface of the fixed rod 505 are both provided with inclined surfaces, so the push block 504 can push the fixed rod 505 on both sides to move synchronously during the movement, when the fixed rod 505 is clamped at one end in the limiting groove 103, the staff can stop twisting the knob;

[0043] When the two first connecting rods 401 need to be connected and fixed, the staff only needs to place the shell 601 above the first connecting rod 401, then twist the second knob 603, drives the first bevel gear 604 to rotate, the first bevel gear 604 drives the second bevel gear 606 to rotate, the second bevel gear 606 drives the rotating shaft 605 and the second threaded rod 607 and the third threaded rod 611 fixed at both ends of the rotating shaft 605 to rotate synchronously, the second threaded rod 607 and the third threaded rod 611 drive the threaded cap 608 to move, the threaded cap 608 drives the connecting plate 609 fixed on the surface to move, so as to drive the fixed plate 610 rotatingly connected on the side surface of the connecting plate 609 to move, and then the first connecting rod 401 is clamped in the connecting groove on the surface of the fixed plate 610.

[0044] It is apparent for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, but rather the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of equivalents of the claims are intended to be embraced therein.

Claims

1. A modular high-strength steel structure trestle comprising a support plate (1) and a support column (2) arranged on the surface of the support plate (1), characterized in that: The support column (2) is fixed with prefabricated bridge (3), the support column (2) side is provided with support unit (4), the support plate (1) and support column (2) both have two, and symmetrically set up in prefabricated bridge (3) both sides, prefabricated bridge (3) is connected with support plate (1) through support unit (4), support column (2) is connected with another support column (2) through support unit (4); The support plate (1) is provided with a first fixing groove (102) on the surface, the support unit (4) includes a first connecting rod (401) and a second connecting rod (402), the second connecting rod (402) is connected to the first fixing groove (102), the prefabricated bridge (3) is provided with a first groove corresponding to the second connecting rod (402) on the lower surface, and the second connecting rod (402) is connected to the first groove on the upper end. The support column (2) includes a fixing member (201), a second fixing bolt (202) and a second fixing groove (203), one end of the first connecting rod (401) is connected to the second fixing groove (203), and the first connecting rod (401) is fixed to the surface of the support column (2) by the second fixing bolt (202), the lower surface of the support column (2) is provided with a second groove corresponding to the first connecting rod (401), and the upper end of the first connecting rod (401) is connected to the second groove. The support unit (4) is provided with a fixing assembly (5) and a connecting assembly (6) on the surface, and the second connecting rod (402) is fixed to the surface of the support plate (1) by the fixing assembly (5).

2. A modular high strength steel structure trestle according to claim 1, characterized in that: The prefabricated bridge (3) is connected to the surface of the support column (2), and the prefabricated bridge (3) is fixed to the surface of the support column (2) by the fixing member (201), the support column (2) is connected to the surface of the support plate (1), and the support column (2) is fixed to the surface of the support plate (1) by the first fixing bolt (101), the first connecting rod (401) and the second connecting rod (402) are both provided on the side of the support column (2), and the first connecting rod (401) is connected to another first connecting rod (401) by the connecting assembly (6).

3. The modular high strength steel structure trestle according to claim 1, characterized in that: The fixing assembly (5) includes a first knob (501), a first threaded rod (502) disposed on the side of the first knob (501), a threaded tube (503), a push block (504) and a fixing rod (505), a first transmission cavity (403) is formed in the second connecting rod (402), the first knob (501) is disposed on the surface of the second connecting rod (402), the upper end of the first threaded rod (502) is fixed to the lower surface of the first knob (501), the lower end of the first threaded rod (502) penetrates the first transmission cavity (403) through a bearing, the threaded tube (503) is threadedly connected to the surface of the first threaded rod (502), and the push block (504) is fixed to the lower end of the threaded tube (503).

4. A modular high strength steel structure trestle according to claim 3, characterized in that: The fixed rod (505) is arranged in the first transmission bin (403), and the fixed rod (505) is perpendicular to the push block (504), the surface of the fixed rod (505) is sleeved with the spring (506), the surface of the first fixed groove (102) is provided with the limiting groove (103), one end of the fixed rod (505) is clamped in the limiting groove (103), the fixed rod (505) and the spring (506) are both two and are symmetrically arranged on the two sides of the push block (504), the side of the threaded tube (503) is fixed with the sliding block (507), the surface of the first transmission bin (403) is provided with the sliding groove, the sliding block (507) is slidably connected in the sliding groove, the threaded tube (503) is movably connected in the first transmission bin (403) through the sliding block (507) and the sliding groove, and the sliding block (507) and the sliding groove are both two and are symmetrically arranged on the two sides of the threaded tube (503).

5. The modular high strength steel structure trestle according to claim 1, characterized in that: The connecting assembly (6) comprises a shell (601) and a second transmission bin (602) formed in the shell (601), and the second transmission bin (602) is internally provided with a first bevel gear (604), a rotating shaft (605), a second bevel gear (606), a second threaded rod (607), a third threaded rod (611), a threaded cap (608) and a connecting plate (609), the surface of the shell (601) is provided with a second knob (603), the first bevel gear (604) is fixed to the lower surface of the second knob (603) through a rotating shaft and a bearing, the second bevel gear (606) is fixed to the surface of the rotating shaft (605), and the first bevel gear (604) is engaged with the second bevel gear (606).

6. A modular high strength steel structure trestle according to claim 5, characterized in that: One end of the second threaded rod (607) is fixed to one end of the rotating shaft (605), the other end of the second threaded rod (607) is rotatably connected to the inner wall of the second transmission bin (602) through a bearing, one end of the third threaded rod (611) is fixed to the other end of the rotating shaft (605), the other end of the third threaded rod (611) is rotatably connected to the inner wall of the second transmission bin (602) through a bearing, the threaded direction of the second threaded rod (607) is opposite to that of the third threaded rod (611), the threaded cap (608) is threadedly connected to the surface of the second threaded rod (607), the connecting plate (609) is fixed to the surface of the threaded cap (608), and the side of the connecting plate (609) is rotatably connected with a fixed plate (610) through a rotating shaft and a bearing, and the surface of the fixed plate (610) is provided with a connecting groove corresponding to the first connecting rod (401) and the second connecting rod (402).

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