Multi-stage crusher for organic fertilizer production
By designing a multi-stage crusher that includes crushing components and cleaning components, the efficiency reduction caused by the material attachment on the surface of the crushing roller is solved, efficient crushing and simplifying the cleaning process, and reducing the burden on users.
Patent Information
- Application Number
- CN202422087063.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-27
AI Technical Summary
After a long time of use by the existing crusher, residual material is easily attached to the surface of the crushing roller, resulting in a reduced crushing efficiency and time-consuming and labor-intensive cleaning, which increases the work burden of users.
A multi-stage crusher for organic fertilizer production is designed, which includes crushing components and cleaning components. The organic fertilizer is crushed multiple times by crushing components, and the cleaning components are used to clean the crushing rollers after the crushing components are used for too long to avoid adhesion of materials and improve crushing efficiency.
It improves the neatness of the crushing roller, improves the crushing efficiency, reduces the work burden of users, and realizes an efficient crushing process.
Smart Images
Figure CN223144804U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of beef cattle breeding, in particular to a multi-stage pulverizer for organic fertilizer production. Background Art
[0002] Beef cattle breeding refers to the agricultural activity of raising and managing cattle specifically for the purpose of producing beef. The main characteristics of beef cattle are plump body, fast growth rate, high feed conversion efficiency, good meat production performance and excellent meat taste. During the beef cattle breeding process, farmers or enterprises will select suitable beef cattle breeds, such as Simmental cattle, Charolais cattle, Limousin cattle, etc. These breeds are widely used in commercial breeding due to their good growth characteristics and meat quality. And during the breeding process, the manure of beef cattle and other organic fertilizers can be multi-stage pulverized by a pulverizer, and then through multiple processes, an organic fertilizer for beef cattle feed breeding can be formed. Compared with ordinary organic fertilizers, this organic fertilizer has extremely high nutrition for feed planting.
[0003] However, after the existing pulverizer pulverizes the organic fertilizer for a long time, residual materials are likely to adhere to the surface of the pulverizing roller. As a result, under the influence of the accumulation of these materials, the residue gradually thickens, and then its pulverizing efficiency gradually decreases. At this time, not only does the user need to disassemble the pulverizing roller and take it out of the pulverizing device for cleaning, which is time-consuming and laborious, increasing the work burden of the user. Therefore, we have proposed a multi-stage pulverizer for organic fertilizer production, which has the function of being easy to use and is urgently needed to be developed. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a multi-stage pulverizer for organic fertilizer production, which can avoid the problem that after the existing pulverizer pulverizes the organic fertilizer for a long time, residual materials are likely to adhere to the surface of the pulverizing roller, resulting in the thickening of the residue under the influence of the accumulation of these materials, and then the gradual decrease of its pulverizing efficiency. At this time, not only does the user need to disassemble the pulverizing roller and take it out of the pulverizing device for cleaning, which is time-consuming and laborious, increasing the work burden of the user.
[0005] The utility model provides a multi-stage pulverizer for organic fertilizer production, including a mounting frame. The right side of the mounting frame is connected with a pulverizing box. The top of the mounting is provided with a pulverizing component. The pulverizing component includes a first motor, and the outer surface of the first motor is connected with the mounting frame. The inner cavity of the pulverizing box is provided with a cleaning component cooperating with the pulverizing component. The bottom of the pulverizing box is communicated with a discharge pipeline.
[0006] In a specific implementation scheme, a plurality of pulverizing rollers are rotatably connected in the inner cavity of the pulverizing box and are arranged symmetrically up and down. The left ends of the four pulverizing rollers penetrate to the outside of the pulverizing box and are respectively connected with first gears.
[0007] In a specific embodiment, the output shaft of the first motor is connected to the crushing roller. Two first belt pulleys are respectively sleeved on the right ends of the two crushing rollers, and the two first belt pulleys are connected by belt drive.
[0008] In a specific embodiment, the cleaning assembly includes two protective boxes. The outer surface of the protective box is connected to the front side of the crushing box. A fixed box is connected to the top of the protective box. A second motor is bolted to the inner cavity of the fixed box. The output shaft of the second motor is connected to a rotating rod. Two short rods are rotatably connected to the inner cavity of the protective box. A storage box is connected to the right side of the protective box.
[0009] In a specific embodiment, the right end of the short rod penetrates into the inner cavity of the storage box and is rotatably connected to the inner cavity of the storage box. Six second belt pulleys are respectively sleeved on the surfaces of the rotating rod and the short rod. A disc is connected to the left end of the short rod. A number of operating rods are connected to the surface of the disc, and the operating rods are located in the inner cavity of the protective box.
[0010] In a specific embodiment, positioning blocks are connected to the four corners of the inner cavity of the protective box. A return spring is connected to the top of the positioning block. A filter screen plate is slidably connected to the inner cavity of the protective box. The top end of the return spring is connected to the filter screen plate.
[0011] In a specific embodiment, a first impurity pump is installed on the outer surface of the protective box. The water inlet end and the water outlet end of the first impurity pump are respectively communicated with a first pipeline, and the first pipeline respectively penetrates into the protective box and the crushing box. A second impurity pump is installed on the top of the protective box. The water inlet end and the water outlet end of the second impurity pump are respectively connected to a second pipeline, and the second pipeline is respectively communicated with the protective box and the crushing box.
[0012] In a specific embodiment, the second pipeline at the water outlet end of the second impurity pump is communicated with a water pipe, and the surface of the water pipe is installed on the crushing box. A number of spray heads are communicated with the surface of the water pipe, and the spray heads are used in cooperation with the crushing assembly. Connection boxes are connected to both sides of the crushing box.
[0013] In a specific embodiment, a threaded rod is rotatably connected to the inner cavity of the connection box. The right end of the threaded rod penetrates to the outside of the connection box. Two third belt pulleys are respectively connected to the surfaces of the threaded rod and the rotating rod, and the two third belt pulleys are connected by belt drive. A threaded plate is threadedly connected to the surface of the threaded rod.
[0014] In a specific embodiment, two receiving plates arranged symmetrically up and down penetrate through the inner cavity of the crushing box, and the receiving plates are located below the crushing rollers. Two scraping plates arranged symmetrically up and down are connected to the inner cavity of the crushing box, and the scraping plates are used in cooperation with the receiving plates. One side of the receiving plate away from the crushing box penetrates through to the inner cavity of the connecting box and is connected to a pushing plate, and the pushing plate is in contact with the threaded plate. The outer surface of the receiving plate is slidably connected to the connecting box, and an H-shaped plate is commonly connected to the outer surfaces of the two receiving plates.
[0015] The beneficial effects of the present application are as follows: Through the setting of the crushing component, various organic fertilizers can be crushed multiple times. And when the crushing component has been used for a long time, the setting of the cleaning component can be utilized to clean the crushing rollers, thereby avoiding the attachment of organic fertilizers to the surface of the crushing rollers and affecting the long-term crushing work. This not only improves the cleanliness of the crushing rollers but also avoids the reduction of the crushing work efficiency due to the residual attached organic fertilizers during the crushing process, improves the crushing work efficiency, reduces the workload of the user, and is beneficial for the user to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the embodiment of the present utility model;
[0018] Figure 2 It is a three-dimensional schematic diagram of the side view cross-section of the partial structure of the cleaning component of the embodiment of the present utility model;
[0019] Figure 3 It is a three-dimensional schematic diagram of the structure of the crushing roller of the embodiment of the present utility model;
[0020] Figure 4 It is a three-dimensional schematic diagram of the structure of the operating rod of the embodiment of the present utility model;
[0021] Figure 5 For the embodiment of the present utility model Figure 4 The enlarged structure schematic diagram at A in;
[0022] Figure 6 It is a three-dimensional schematic diagram of the structure of the connecting box of the embodiment of the present utility model;
[0023] Figure 7 It is a three-dimensional schematic diagram of the side view cross-section structure of the connecting box of the embodiment of the present utility model;
[0024] Figure 8 Schematic three-dimensional structure diagram of the threaded plate structure according to an embodiment of the present utility model;
[0025] Figure 9 Schematic three-dimensional structure diagram of the receiving plate structure according to an embodiment of the present utility model;
[0026] Figure 10 Schematic three-dimensional structure diagram of the nozzle structure according to an embodiment of the present utility model;
[0027] Figure 11 Schematic three-dimensional structure diagram of the side view sectional structure of the pulverizing box according to an embodiment of the present utility model.
[0028] Icon: 1, mounting frame; 2, pulverizing box; 3, pulverizing assembly; 31, first motor; 32, pulverizing roller; 33, first pulley; 34, first gear; 4, cleaning assembly; 41, protective box; 42, fixed box; 43, second motor; 44, rotating rod; 45, short rod; 46, disc; 47, running rod; 48, positioning block; 49, return spring; 410, filter screen plate; 411, first impurity pump; 412, second impurity pump; 413, water pipe; 414, nozzle; 415, second pulley; 416, connecting box; 417, threaded rod; 418, third pulley; 419, threaded plate; 420, receiving plate; 421, push plate; 422, H-shaped plate; 423, scraper; 424, storage box; 5, discharge pipeline. Detailed implementation manners
[0029] In the existing pulverizer, after pulverizing organic fertilizer for a long time, the surface of the pulverizing roller is prone to adhering residual materials. As a result, under the influence of the accumulation of these materials, the residue gradually thickens, and then its pulverizing efficiency gradually decreases. At this time, not only does the user need to disassemble the pulverizing roller and take it out of the pulverizing device for cleaning, which is time-consuming and laborious, but also increases the user's work burden. Therefore, the inventor has studied and provided a multi-stage pulverizer for organic fertilizer production. Through the setting of the pulverizing assembly, various organic fertilizers can be pulverized multiple times. And when the pulverizing assembly has been used for a long time, the cleaning assembly can be used to clean the pulverizing roller, thereby avoiding the adhesion of organic fertilizer on the surface of the pulverizing roller and affecting the long-term pulverizing work. This not only improves the cleanliness of the pulverizing roller but also avoids the reduction of the pulverizing work efficiency due to the residual adhered organic fertilizer during the pulverizing process, improves the pulverizing work efficiency, reduces the user's work burden, is beneficial for the user to use, and thus solves the above-mentioned defects.
[0030] The following will describe in detail some embodiments of the present utility model with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0031] Please refer to Figures 1 to 11, an embodiment of the present utility model provides a multi-stage pulverizer for organic fertilizer production, which includes a mounting frame 1. A pulverizing box 2 is connected to the right side of the mounting frame 1, and a bottom frame is installed at the bottom of the pulverizing box 2 and is flush with the ground;
[0032] Please refer to Figures 2 to 11 , two pulverizing components 3 are arranged at the top of the mounting frame 1. A feeding hopper is communicated with the top of the pulverizing box 2. The pulverizing component 3 includes a first motor 31, and the outer surface of the first motor 31 is connected to the mounting frame 1. A plurality of pulverizing rollers 32 arranged symmetrically up and down are rotatably connected to the inner cavity of the pulverizing box 2, and the left ends of the four pulverizing rollers 32 penetrate to the outside of the pulverizing box 2 and are respectively connected with first gears 34. Among them, the contact area where the pulverizing roller 32 penetrates and contacts the pulverizing box 2 is sealed. The output shaft of the first motor 31 is connected to the pulverizing roller 32. Two first belt pulleys 33 are respectively sleeved on the right ends of the two pulverizing rollers 32, and the two first belt pulleys 33 are connected by belt drive;
[0033] Specifically, when pulverizing various organic fertilizers, the first motor 31 can be started. The output shaft of the first motor 31 drives one of the pulverizing rollers 32 to rotate. The pulverizing roller 32 drives the remaining pulverizing rollers 32 to rotate together by using the rotational motion of the first belt pulley 33 and the first gear 34, so as to perform secondary pulverization on various organic fertilizers, thereby achieving the purpose of multi-stage pulverization. Then, the user needs to place an external storage device at the bottom of the discharge pipe 5 in advance to receive and take out the discharged materials;
[0034] Please refer to Figures 2 to 10 , a cleaning component 4 cooperating with the pulverizing component 3 is arranged in the inner cavity of the pulverizing box 2. A discharge pipe 5 is communicated with the bottom of the pulverizing box 2. A valve is sleeved on the surface of the discharge pipe 5. The cleaning component 4 includes two protective boxes 41. The outer surface of the protective box 41 is connected to the front side of the pulverizing box 2. A fixed box 42 is connected to the top of the protective box 41. A second motor 43 is bolted in the inner cavity of the fixed box 42. The output shaft of the second motor 43 is connected to a rotating rod 44. Two short rods 45 are rotatably connected to the inner cavity of the protective box 41. A storage box 424 is connected to the right side of the protective box 41. A sealing plate is bolted to the front side of the protective box 41, so that it is convenient for the user to disassemble the sealing plate to clean the residual materials remaining in the inner cavity of the protective box 41. The right end of the short rod 45 penetrates into the inner cavity of the storage box 424 and is rotatably connected to the inner cavity of the storage box 424. The contact area where the short rod 45 penetrates and contacts the protective box 41 and the storage box 424 is sealed. Six second belt pulleys 415 are respectively sleeved on the surfaces of the rotating rod 44 and the short rod 45, and the six second belt pulleys 415 are connected by belt drive;
[0035] Please refer to Figures 1 to 10, a disc 46 is connected to the left end of the short rod 45, and a number of running rods 47 are connected to the surface of the disc 46, and the running rods 47 are located in the inner cavity of the protection box 41. Among them, the shape of the running rod 47 is U-shaped. Positioning blocks 48 are connected to the four corners of the inner cavity of the protection box 41. A return spring 49 is connected to the top of the positioning block 48, and the return spring 49 is waterproofed. A filter screen plate 410 is slidably connected to the inner cavity of the protection box 41. The top end of the return spring 49 is connected to the filter screen plate 410. A first impurity pump 411 is installed on the outer surface of the protection box 41. The water inlet end and the water outlet end of the first impurity pump 411 are respectively communicated with a first pipeline, and the first pipeline respectively penetrates into the protection box 41 and the crushing box 2. Among them, the contact area of the first pipeline with the protection box 41 and the crushing box 2 is sealed. A second impurity pump 412 is installed on the top of the protection box 41. The water inlet end and the water outlet end of the second impurity pump 412 are respectively connected with a second pipeline. The second pipeline is respectively communicated with the protection box 41 and the crushing box 2, and the contact area of the second pipeline with the protection box 41 and the crushing box 2 is sealed. The second pipeline at the water outlet end of the second impurity pump 412 is communicated with a water pipe 413. Among them, the second pipeline penetrates into the inner cavity of the crushing box 2 and is connected to the water pipe 413, and the surface of the water pipe 413 is installed with the crushing box 2. A number of spray heads 414 are communicated with the surface of the water pipe 413, and the spray heads 414 are used in cooperation with the crushing assembly 3. Two baffles are installed in the inner cavity of the crushing box 2 and are arranged symmetrically up and down. The baffles are located above the spray heads 414 and the water pipe 413, and the baffles are inclined;
[0036] Please refer to Figures 2 to 11, connection boxes 416 are connected to both sides of the crushing box 2. A threaded rod 417 is rotatably connected to the inner cavity of the connection box 416, and several threads are provided on the surface of the threaded rod 417. The right end of the threaded rod 417 penetrates to the outside of the connection box 416. Third belt pulleys 418 are respectively connected to the surfaces of the threaded rod 417 and the rotating rod 44, and the two third belt pulleys 418 are connected by belt drive. A threaded plate 419 is threadedly connected to the surface of the threaded rod 417, and an internal thread adapted to the threaded rod 417 is provided in the inner cavity of the threaded plate 419. The shape of the threaded rod 417 is U-shaped. Two receiving plates 420 arranged symmetrically up and down are penetrated through the inner cavity of the crushing box 2, and the receiving plates 420 are located below the crushing rollers 32. The area where the receiving plates 420 are in contact with the crushing box 2 through is sealed, and a placement cavity is opened at the top of the receiving plate 420, and the depth of the placement cavity can be deepened according to the actual situation. Two scraping plates 423 arranged symmetrically up and down are connected to the inner cavity of the crushing box 2, and the scraping plates 423 are used in cooperation with the receiving plates 420. One side of the receiving plate 420 away from the crushing box 2 penetrates to the inner cavity of the connection box 416 and is connected to a push plate 421, and the push plate 421 is in contact with the threaded plate 419. The outer surface of the receiving plate 420 is slidably connected to the connection box 416. A U-shaped chute is opened on the outer surface of the connection box 416, and several sliders slidably connected to the U-shaped chute are connected to the outer surface of the receiving plate 420. An H-shaped plate 422 is commonly connected to the outer surfaces of the two receiving plates 420;
[0037] Specifically, when it is necessary to clean the crushing roller 32, the liquid that softens the objects adhered to the crushing roller 32 can be poured into the crushing box 2 first, and then before the soaking is completed, the second motor 43 and the first impurity pump 411 are started, and then the output shaft of the second motor 43 drives the rotating rod 44 to rotate, and the rotating rod 44 drives the second pulley 415 and the third pulley 418 to rotate simultaneously, wherein the second pulley 415 drives the short rod 45 to rotate during the process, and the short rod 45 drives the running rod 47 to rotate and contact with the filter screen plate 410, wherein the surface of the running rod 47 is wrapped with a nylon brush, so as to clean the filter screen plate 410, at this time, the filter screen plate 410 slides up and down by the elasticity of the return spring 49, so as to complete the shaking process, at this time, the first impurity pump 411 sucks the liquid into the protective box 41, and in this process, the liquid is filtered through the filter screen plate 410, and the solid remains on the filter screen plate 410, and the liquid flows to the bottom of the filter screen plate 410, at this time, the third pulley 418 drives the threaded rod 417 rotates, and the threaded rod 417 uses the principle of thread transmission to push the threaded plate 419 to move to the left side, and the threaded plate 419 pushes the push plate 421 to move synchronously, and the push plate 421 drives the receiving plate 420 to move synchronously, so that the receiving plate 420 moves to the bottom of the crushing roller 32. At this time, the second impurity pump 412 is started to transport the filtered liquid to the water pipe 413, and the water pipe 413 sprays the liquid to the surface of the crushing roller 32 through the nozzle 414, so as to wash the materials remaining on the surface of the crushing roller 32. During the washing process, the crushing roller 32 can be started to rotate to wash it comprehensively. At this time, the receiving plate 420 is used to receive the residue attached to the surface of the crushing roller 32 after washing or soaking. After receiving it, the cleaning component 4 can be used to move the receiving plate 420 to the outside of the crushing box 2 to collect and process the residue, which is convenient for use. Finally, the user can connect the external pipeline or the liquid storage device in advance to place the bottom of the discharge pipe 5, and then discharge the soaked liquid to the outside of the crushing box 2 for easy use.
[0038] In summary, the working principle of a multi-stage pulverizer for producing organic fertilizer in an embodiment of the utility model is as follows: first, the user pours a variety of organic fertilizers that need to be crushed externally into the crushing box 2, and starts the crushing component 3, and uses the crushing component 3 to perform multi-stage crushing on the organic fertilizer. After crushing, the user places the external storage device under the discharge pipe 5 in advance, and discharges the internal crushed material to the outside of the crushing box 2 through the discharge pipe 5. Then, when the crushing component 3 is used for a long time, the cleaning component 4 can be started to clean the crushing component 3, thereby improving the working efficiency of the crushing component 3 and facilitating use.
[0039] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A multi-stage pulverizer for organic fertilizer production, including a mounting frame (1), characterized in that, The right side of the mounting frame (1) is connected to a crushing box (2). A crushing component (3) is arranged on the top of the mounting frame (1). The crushing component (3) includes a first motor (31), and the outer surface of the first motor (31) is connected to the mounting frame (1). A cleaning component (4) that cooperates with the crushing component (3) is arranged in the inner cavity of the crushing box (2). The bottom of the crushing box (2) is communicated with a discharge pipeline (5).
2. The multi-stage pulverizer for organic fertilizer production according to claim 1, characterized in that, A plurality of crushing rollers (32) arranged symmetrically up and down are rotatably connected in the inner cavity of the crushing box (2), and the left ends of the four crushing rollers (32) penetrate to the outside of the crushing box (2) and are respectively connected with first gears (34).
3. The multi-stage pulverizer for organic fertilizer production according to claim 2, wherein, The output shaft of the first motor (31) is connected to the crushing roller (32). Two first belt pulleys (33) are respectively sleeved on the right ends of the two crushing rollers (32), and the two first belt pulleys (33) are connected by a belt in a transmission manner.
4. An organic fertilizer production multi-stage crusher according to claim 1, characterized in that, The cleaning component (4) includes two protective boxes (41). The outer surface of the protective box (41) is connected to the front side of the crushing box (2). A fixed box (42) is connected to the top of the protective box (41). A second motor (43) is bolted in the inner cavity of the fixed box (42). The output shaft of the second motor (43) is connected to a rotating rod (44). Two short rods (45) are rotatably connected in the inner cavity of the protective box (41). A storage box (424) is connected to the right side of the protective box (41).
5. An organic fertilizer production multi-stage crusher according to claim 4, characterized in that, The right end of the short rod (45) penetrates into the inner cavity of the storage box (424) and is rotatably connected to the inner cavity of the storage box (424). Six second belt pulleys (415) are respectively sleeved on the surfaces of the rotating rod (44) and the short rod (45). A disc (46) is connected to the left end of the short rod (45). A plurality of operating rods (47) are connected to the surface of the disc (46), and the operating rods (47) are located in the inner cavity of the protective box (41).
6. The multi-stage crusher for organic fertilizer production according to claim 5, wherein, Positioning blocks (48) are connected to the four corners of the inner cavity of the protective box (41). A return spring (49) is connected to the top of the positioning block (48). A filter screen plate (410) is slidably connected in the inner cavity of the protective box (41). The top end of the return spring (49) is connected to the filter screen plate (410).
7. The multi-stage pulverizer for organic fertilizer production according to claim 6, characterized in that, A first impurity pump (411) is installed on the outer surface of the protective box (41). The water inlet end and the water outlet end of the first impurity pump (411) are respectively communicated with a first pipeline, and the first pipeline respectively penetrates into the protective box (41) and the crushing box (2). A second impurity pump (412) is installed on the top of the protective box (41). The water inlet end and the water outlet end of the second impurity pump (412) are respectively connected with a second pipeline, and the second pipeline is respectively communicated with the protective box (41) and the crushing box (2).
8. An organic fertilizer production multi-stage crusher according to claim 7, characterized in that, The second pipeline at the water outlet end of the second impurity pump (412) is communicated with a water pipe (413), and the surface of the water pipe (413) is installed with the crushing box (2). A number of spray heads (414) are communicated with the surface of the water pipe (413), and the spray heads (414) are used in cooperation with the crushing assembly (3). Connecting boxes (416) are connected to both sides of the crushing box (2).
9. An organic fertilizer production multi-stage crusher according to claim 8, characterized in that, A threaded rod (417) is rotatably connected to the inner cavity of the connecting box (416). The right end of the threaded rod (417) penetrates to the outside of the connecting box (416). Two third belt pulleys (418) are respectively connected to the surfaces of the threaded rod (417) and the rotating rod (44), and the two third belt pulleys (418) are connected by belt drive. A threaded plate (419) is threadedly connected to the surface of the threaded rod (417).
10. A multi-stage pulverizer for organic fertilizer production according to claim 9, characterized in that, Two receiving plates (420) arranged symmetrically up and down are arranged through the inner cavity of the crushing box (2), and the receiving plates (420) are located below the crushing rollers (32). Two scraping plates (423) arranged symmetrically up and down are connected to the inner cavity of the crushing box (2), and the scraping plates (423) are used in cooperation with the receiving plates (420). One side of the receiving plate (420) away from the crushing box (2) penetrates to the inner cavity of the connecting box (416) and is connected with a push plate (421), and the push plate (421) is in contact with the threaded plate (419). The outer surface of the receiving plate (420) is slidably connected with the connecting box (416). An H-shaped plate (422) is commonly connected to the outer surfaces of the two receiving plates (420).