Portable assembling tool for disassembling and assembling spring

Abstract

The utility model discloses a portable assembling tool for dismounting and mounting a spring, and relates to the technical field of spring dismounting and mounting. The device comprises a chassis, and further comprises a supporting part which is arranged on the chassis and is used for providing support; the clamping part is arranged above the base plate and is used for clamping the spring assembly; the extrusion part is mounted on the chassis, is positioned below the clamping part and is used for extruding the spring assembly; firstly, the spring assembly is fixed in the horizontal direction through the clamping part, and then the spring assembly is fixed in the vertical direction through the extrusion part. According to the portable assembling tool for disassembling and assembling the spring, the clamping part is arranged, so that the problems that in the using process of an existing portable assembling tool for disassembling and assembling the spring, the opening degree between clamping plates is inconvenient to adjust, the device needs to be frequently replaced to meet the clamping requirement when facing multiple sets of spring assemblies with different sizes, and the process is tedious and consumes time and energy are solved.

Description

Technical Field

[0001] This utility model belongs to the field of spring assembly and disassembly technology, and in particular relates to a portable assembly tool for spring assembly and disassembly. Background Technology

[0002] In the fields of mechanical repair, manufacturing, and related industries, springs play a crucial role as an indispensable elastic element. In automobile manufacturing, springs are used in suspension systems to cushion road bumps; in the aerospace field, high-precision springs ensure the stable operation of instruments; and in electronic devices, miniature springs enable the precise repositioning of components. During the installation and removal of springs, specialized tools, such as specially designed clamps and wrenches, must be used to precisely control the compression and release force of the spring, preventing deformation or breakage due to uneven force. This ensures the safety and efficiency of the operation while avoiding irreversible damage to the spring itself.

[0003] However, existing portable assembly tools for spring assembly and disassembly are not convenient for adjusting the opening between clamps during use. When dealing with multiple sets of spring assemblies of different sizes, it is necessary to frequently change the device to adapt to the clamping requirements. This process is cumbersome and consumes a lot of time and effort. Utility Model Content

[0004] The purpose of this utility model is to provide a portable assembly tool for spring assembly and disassembly. By setting up a clamping part, it solves the problem that existing portable assembly tools for spring assembly and disassembly are not convenient to adjust the opening between the clamping plates during use. When facing multiple sets of spring assemblies of different sizes, it is necessary to frequently change the device to adapt to the clamping requirements. This process is cumbersome and consumes a lot of time and effort.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a portable assembly tool for spring assembly and disassembly, including a chassis, a support part disposed on the chassis for providing support, a clamping part disposed above the chassis for clamping the spring assembly, and a pressing part mounted on the chassis and located below the clamping part for pressing the spring assembly. The support part provides support for the clamping part and the pressing part. First, the clamping part fixes the spring assembly horizontally, and then the pressing part fixes the spring assembly vertically.

[0007] Furthermore, the support portion includes a plurality of support rods fixedly connected to the top of the chassis, and the plurality of support rods are distributed in a circumferential array on the top of the chassis; wherein, the chassis is used to fix the extrusion portion, and the plurality of support rods are used to provide support for the clamping portion.

[0008] Furthermore, the clamping part includes a driving assembly disposed between a plurality of support rods for providing power to the clamping part; and a clamping assembly disposed below the driving assembly for clamping the spring assembly; wherein the driving assembly is used to drive the clamping assembly to clamp the spring assembly.

[0009] Furthermore, the extrusion section includes a transmission assembly mounted on the chassis for providing power to the extrusion section; and a lifting assembly disposed above the transmission assembly for extruding the spring assembly; wherein the transmission assembly drives the lifting assembly to extrude the spring assembly.

[0010] Furthermore, the drive assembly includes several fixed rods one, which are respectively fixedly connected to the top of several support rods. A motor one is arranged above the chassis. The sides of the several fixed rods one that are close to each other are fixedly connected to the motor one. The output shaft of the motor one is fixedly connected to a rotating shaft one through a coupling. The several fixed rods one are arranged in a circular array and are used to connect the motor one and the several support rods.

[0011] Furthermore, the clamping assembly includes several fixed rods 2, each fixedly connected to the top of several support rods, and the several fixed rods 2 are respectively located below several fixed rods 1. The bottom of the rotating shaft 1 is rotatably connected to a limiting plate, and the end of the rotating shaft 1 extends to the bottom of the limiting plate. The sides of the several fixed rods 2 that are close to each other are fixedly connected to the limiting plate. The limiting plate is provided with several sliding rods, and the end of the rotating shaft 1 is fixedly connected to a connecting block. The connecting block is provided with several clamping components. The limiting plate is provided with several arc-shaped sliding grooves, and the several sliding rods are adapted to the several arc-shaped sliding grooves. The tops of the several sliding rods respectively penetrate the several arc-shaped sliding grooves, and the outer walls of the several sliding rods respectively contact the inner walls of the several arc-shaped sliding grooves. The tops of the several sliding rods are fixedly connected to hexagonal blocks, and the several hexagonal blocks are all located above the limiting plate. The several hexagonal blocks are used to limit the several sliding rods.

[0012] Furthermore, the transmission assembly includes a U-shaped bracket fixedly connected to the top of the chassis, a second motor fixedly connected to the right outer wall of the U-shaped bracket, and a bidirectional threaded rod fixedly connected to the output shaft of the second motor via a coupling. The U-shaped bracket is provided with a limiting component. The U-shaped bracket is used to provide support for the extrusion section, and the second motor is used to provide power for the lifting action of the lifting assembly.

[0013] Furthermore, the lifting assembly includes two threaded sleeves threadedly connected to the outer wall of the bidirectional threaded rod. Connecting rods are hinged to the left and right sides of the two threaded sleeves, and pressing elements are provided on several connecting rods. The several connecting rods are arranged in a mirror image, and the distance between the two threaded sleeves is changed by rotating the bidirectional threaded rod.

[0014] Furthermore, the clamping component includes a rotating strip fixedly connected to the left side of the connecting block, a slider slidably connected to the inner wall of the rotating strip, the top of the slider being fixedly connected to a corresponding sliding rod, and a clamping plate fixedly connected to the bottom left side of the slider; wherein, a plurality of clamping components are provided, and the clamping components are arranged in a circumferential array, a groove is provided on the rotating strip, the slider is slidably connected to the groove, and the clamping plate is used to clamp the spring assembly.

[0015] Furthermore, the limiting component includes a limiting strip fixedly connected to the top of the U-shaped bracket, the limiting strip being located below the bidirectional threaded rod, and the outer walls of both threaded sleeves being slidably connected to the limiting strip; and the pressing component includes a hinge block hinged to the top of several connecting rods, the top of the hinge block being fixedly connected to a pressure plate; wherein, the limiting component is used to limit the two threaded sleeves, the hinge block is used to connect several connecting rods and the pressure plate, and by changing the distance between the two threaded sleeves, the height of the hinge block and the pressure plate is changed by the several connecting rods.

[0016] This utility model has the following beneficial effects:

[0017] 1. By setting up a clamping part, when it is necessary to clamp and fix the spring assembly, the operator can first start motor one. Motor one drives the connecting block and several rotating strips to rotate forward through shaft one. Under the limiting action of the limiting plate, several sliding bars drive several connecting blocks to slide on several rotating strips. At this time, several sliders drive several clamping plates to move away from each other. When the opening between several clamping plates is greater than the size of the spring assembly, motor one is turned off. At this time, the operator can place the top of the spring assembly inside the clamping plate, and then start motor one again. Motor one drives the connecting block to rotate forward through shaft one. The moving connecting block and the rotating strip reverse their directions. Under the limiting action of the limiting plate, several sliding bars drive several connecting blocks to slide on several rotating strips. At this time, several sliders drive several clamping plates to move closer to each other. When several clamping plates clamp the spring assembly, the motor is turned off, thus realizing the clamping and releasing of the spring assembly. It can stably clamp the spring assembly. At the same time, the opening between several clamping plates can be adjusted according to the actual situation. When facing the clamping task of spring assemblies of different sizes, there is no need to frequently change equipment or make complex adjustments, which reduces production costs and operating difficulty.

[0018] 2. By setting up a compression section, when the spring assembly needs to be compressed, motor two is started. The forward rotation of the output shaft of motor two drives the bidirectional threaded rod to rotate forward. Under the limiting action of the limiting strip, the two threaded sleeves move closer together, thereby driving the bottoms of several connecting rods to move closer together, causing the hinge block and pressure plate to move upward, slowly compressing the spring assembly until the spring assembly reaches the required disassembly / reassembly state, at which point motor two is turned off. When the disassembly work is completed, motor two is started again. At this time, the reverse rotation of the output shaft of motor two drives the bidirectional threaded rod to reverse. Under the limiting action of the limiting strip, the two threaded sleeves move away from each other, thereby driving the bottoms of several connecting rods to move away from each other, causing the hinge block and pressure plate to move downward, releasing the compression force of the spring assembly, and allowing the spring assembly to return to its natural state. By cooperating with the clamping section, the spring assembly can be fixed in both horizontal and vertical directions at the same time, thereby stably clamping the spring assembly and ensuring that the position of the spring assembly is fixed during assembly or disassembly.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial structural diagram of the clamping part of this utility model;

[0023] Figure 3 This is a partial structural schematic diagram of the clamping assembly of this utility model;

[0024] Figure 4 This is a partial structural diagram of the extrusion section of this utility model;

[0025] Figure 5 This is a partial structural schematic diagram of the transmission component of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Support section; 101. Chassis; 102. Support rod; 2. Clamping section; 21. Drive assembly; 211. Fixed rod one; 212. Motor one; 213. Rotating shaft one; 22. Clamping assembly; 221. Fixed rod two; 222. Limiting plate; 223. Sliding rod; 224. Connecting block; 225. Rotating strip; 226. Slider; 227. Clamping plate; 3. Extrusion section; 31. Transmission assembly; 311. U-shaped bracket; 312. Motor two; 313. Bidirectional threaded rod; 314. Limiting strip; 32. Lifting assembly; 321. Threaded sleeve; 322. Connecting rod; 323. Hinge block; 324. Pressure plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 As shown, this utility model is a portable assembly tool for spring assembly and disassembly, including a chassis 101, and further including: a support part 1, which is disposed on the chassis 101 to provide support; a clamping part 2, which is disposed above the chassis 101 to clamp the spring assembly; and a pressing part 3, which is mounted on the chassis 101 and located below the clamping part 2 to press the spring assembly; wherein, the support part 1 provides support for the clamping part 2 and the pressing part 3, firstly the clamping part 2 fixes the spring assembly horizontally, and then the pressing part 3 fixes the spring assembly vertically. The support part 1 includes a plurality of support rods 102 fixedly connected to the top of the chassis 101, and the plurality of support rods 102 are distributed in a circumferential array on the top of the chassis 101; wherein, the chassis 101 is used to fix the pressing part 3, and the plurality of support rods 102 are used to provide support for the clamping part 2.

[0030] The clamping part 2 includes a drive assembly 21, which is disposed between a plurality of support rods 102 and is used to provide power to the clamping part 2; and a clamping assembly 22, which is disposed below the drive assembly 21 and is used to clamp the spring assembly. The drive assembly 21 drives the clamping assembly 22 to clamp the spring assembly. The drive assembly 21 includes a plurality of fixed rods 211 respectively fixedly connected to the top of the plurality of support rods 102. A motor 212 is disposed above the chassis 101. The sides of the plurality of fixed rods 211 that are close to each other are fixedly connected to the motor 212. The output shaft of the motor 212 is fixedly connected to a rotating shaft 213 via a coupling. A plurality of fixed rods 211 are arranged in a circular array and are used to connect a motor 212 and a plurality of support rods 102. The clamping assembly 22 includes a plurality of fixed rods 221 respectively fixedly connected to the top of the plurality of support rods 102, and the plurality of fixed rods 221 are respectively located below the plurality of fixed rods 211. The bottom of the rotating shaft 213 is rotatably connected to a limiting plate 222, and the end of the rotating shaft 213 extends to the bottom of the limiting plate 222. The sides of the plurality of fixed rods 221 that are close to each other are fixedly connected to the limiting plate 222. A plurality of sliding rods 223 are provided on the limiting plate 222, and a connecting block is fixedly connected to the end of the rotating shaft 213. 224. The connecting block 224 is provided with several clamping components; wherein, the limiting plate 222 has several arc-shaped sliding grooves, and several sliding rods 223 are adapted to the several arc-shaped sliding grooves. The tops of the several sliding rods 223 respectively penetrate the several arc-shaped sliding grooves, and the outer walls of the several sliding rods 223 respectively contact the inner walls of the several arc-shaped sliding grooves. The tops of the several sliding rods 223 are all fixedly connected with hexagonal blocks, and the several hexagonal blocks are all located above the limiting plate 222. The several hexagonal blocks are used to limit the several sliding rods 223. The clamping components include a rotating strip 225 fixedly connected to the left side of the connecting block 224, and a sliding component is slidably connected to the inner wall of the rotating strip 225. The top of the slider 226 is fixedly connected to the corresponding sliding rod 223, and the bottom left side of the slider 226 is fixedly connected to the clamping plate 227. Several clamping parts are provided and arranged in a circumferential array. A groove is opened on the rotating strip 225, and the slider 226 is slidably connected to the groove. The clamping plate 227 is used to clamp the spring assembly. By setting the clamping part 2, the spring assembly can be clamped and released, and the spring assembly can be clamped stably. At the same time, the opening between several clamping plates 227 can be adjusted according to the actual situation. When facing the clamping task of spring assemblies of different sizes, there is no need to frequently change equipment or make complex adjustments, which reduces production costs and operation difficulty.

[0031] The extrusion section 3 includes a transmission assembly 31 mounted on the chassis 101 to provide power to the extrusion section 3; and a lifting assembly 32 positioned above the transmission assembly 31 to extrude the spring assembly. The transmission assembly 31 drives the lifting assembly 32 to extrude the spring assembly. The transmission assembly 31 includes a U-shaped bracket 311 fixedly connected to the top of the chassis 101. A second motor 312 is fixedly connected to the right outer wall of the U-shaped bracket 311. The output shaft of the second motor 312 is fixedly connected to a bidirectional threaded rod 313 via a coupling. Limiting elements are provided on the U-shaped bracket 311. The U-shaped bracket 311 provides support for the extrusion section 3, and the second motor 312 provides power for the lifting assembly 32. The lifting assembly 32 includes two threaded sleeves 321 threadedly connected to the outer wall of the bidirectional threaded rod 313. Connecting rods 322 are hinged to the left and right sides of the two threaded sleeves 321, and extrusion components are provided on several connecting rods 322. 22 are mirror images of each other. Rotating the bidirectional threaded rod 313 changes the distance between the two threaded sleeves 321. The limiting component includes a limiting strip 314 fixedly connected to the top of the U-shaped bracket 311, located below the bidirectional threaded rod 313. The outer walls of both threaded sleeves 321 are slidably connected to the limiting strip 314. The pressing component includes a hinge block 323 hinged to the top of several connecting rods 322, with a pressure plate 324 fixedly connected to the top of the hinge block 323. The limiting component... The component is used to limit the two threaded sleeves 321. The hinge block 323 is used to connect several connecting rods 322 and pressure plate 324. By changing the distance between the two threaded sleeves 321, the height of the hinge block 323 and pressure plate 324 is changed by the several connecting rods 322. By setting the extrusion part 3, which cooperates with the clamping part 2, the spring assembly can be fixed in both horizontal and vertical directions at the same time, thereby stably clamping the spring assembly and ensuring that the position of the spring assembly is fixed during assembly or disassembly.

[0032] A specific application of this embodiment is as follows: In use, the operator first starts motor 212. Motor 212 drives connecting block 224 and several rotating strips 225 to rotate clockwise via rotating shaft 213. Under the limiting action of limiting plate 222, several sliding rods 223 respectively drive several connecting blocks 224 to slide on several rotating strips 225. At this time, several sliders 226 respectively drive several clamping plates 227 to move away from each other. When the opening between several clamping plates 227 is greater than the size of the spring assembly, the motor is turned off. At this point, the operator can place the top of the spring assembly within several clamping plates 227, and then restart motor 212. Motor 212 drives the connecting block 224 and the rotating strip 225 to reverse direction via rotating shaft 213. Under the limiting action of limiting plate 222, several sliding rods 223 respectively drive several connecting blocks 224 to slide on several rotating strips 225. At this time, several sliders 226 respectively drive several clamping plates 227 to move closer to each other. When several clamping plates 227 clamp the spring assembly... When the spring assembly is clamped and fixed, motor 212 is turned off. Then, motor 312 is started. The forward rotation of the output shaft of motor 312 drives the bidirectional threaded rod 313 to rotate forward. Under the limiting action of the limiting strip 314, the two threaded sleeves 321 move closer together, thereby causing the bottoms of several connecting rods 322 to move closer together, causing the hinge block 323 and pressure plate 324 to move upward, slowly compressing the spring assembly. Motor 312 is then turned off when the spring assembly reaches the required disassembly / reassembly state. When the disassembly is complete, motor 312 is started again. When motor 212 is activated, the reverse rotation of the output shaft of motor 212 drives the bidirectional threaded rod 313 to reverse. Under the limiting action of the limiting strip 314, the two threaded sleeves 321 move away from each other, thereby causing the bottoms of several connecting rods 322 to move away from each other, causing the hinge block 323 and pressure plate 324 to move downward, releasing the compression force of the spring assembly and allowing the spring assembly to return to its natural state. At this time, motor 1212 is activated, and under the forward rotation of the output shaft of motor 1212, several clamping plates 227 move away from each other, thereby removing the spring assembly.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A portable assembly tool for spring assembly and disassembly, comprising a chassis (101), characterized in that, Also includes: A support part (1) is disposed on the chassis (101) for providing support; Clamping part (2), which is disposed above the chassis (101) and is used to clamp the spring assembly; as well as The extrusion part (3) is mounted on the chassis (101) and located below the clamping part (2) for extruding the spring assembly; The support part (1) is used to provide support for the clamping part (2) and the squeezing part (3). First, the clamping part (2) fixes the spring assembly in the horizontal direction, and then the squeezing part (3) fixes the spring assembly in the vertical direction.

2. The portable assembly tool for spring assembly and disassembly according to claim 1, characterized in that, The support part (1) includes a plurality of support rods (102) fixedly connected to the top of the chassis (101), and the plurality of support rods (102) are arranged in a circular array on the top of the chassis (101); The chassis (101) is used to fix the extrusion part (3), and several support rods (102) are used to provide support for the clamping part (2).

3. The portable assembly tool for spring assembly and disassembly according to claim 2, characterized in that, The clamping part (2) includes a drive assembly (21), which is disposed between a plurality of support rods (102) and is used to provide power to the clamping part (2); as well as A clamping assembly (22) is disposed below the drive assembly (21) and is used to clamp the spring assembly; The drive component (21) is used to drive the clamping component (22) to clamp the spring component.

4. A portable assembly tool for spring assembly and disassembly according to claim 3, characterized in that, The extrusion section (3) includes a transmission assembly (31) mounted on a chassis (101) for providing power to the extrusion section (3); and A lifting assembly (32) is disposed above the transmission assembly (31) and is used to compress the spring assembly; The transmission component (31) is used to drive the lifting component (32) to compress the spring component.

5. A portable assembly tool for spring assembly and disassembly according to claim 4, characterized in that, The drive assembly (21) includes several fixed rods (211) fixedly connected to the top of several support rods (102), a motor (212) is provided above the chassis (101), and the sides of the several fixed rods (211) that are close to each other are fixedly connected to the motor (212). The output shaft of the motor (212) is fixedly connected to a rotating shaft (213) through a coupling. Among them, several fixed rods (211) are arranged in a circular array, and several fixed rods (211) are used to connect motor (212) and several support rods (102). 。 6. A portable assembly tool for spring assembly and disassembly according to claim 5, characterized in that, The clamping assembly (22) includes several fixed rods (221) fixedly connected to the top of several support rods (102), and the several fixed rods (221) are located below several fixed rods (211). The bottom of the rotating shaft (213) is rotatably connected to a limiting plate (222), and the end of the rotating shaft (213) extends to the bottom of the limiting plate (222). The sides of the several fixed rods (221) that are close to each other are fixedly connected to the limiting plate (222). The limiting plate (222) is provided with several sliding rods (223). The end of the rotating shaft (213) is fixedly connected to a connecting block (224), and the connecting block (224) is provided with several clamping parts. The limiting plate (222) has several arc-shaped grooves, and several sliding rods (223) are adapted to the several arc-shaped grooves. The tops of the several sliding rods (223) pass through the several arc-shaped grooves respectively. The outer walls of the several sliding rods (223) are in contact with the inner walls of the several arc-shaped grooves respectively. The tops of the several sliding rods (223) are all fixedly connected with hexagonal blocks, and the several hexagonal blocks are all located above the limiting plate (222). The several hexagonal blocks are used to limit the several sliding rods (223).

7. A portable assembly tool for spring assembly and disassembly according to claim 6, characterized in that, The transmission assembly (31) includes a U-shaped bracket (311) fixedly connected to the top of the chassis (101). A second motor (312) is fixedly connected to the outer right side of the U-shaped bracket (311). The output shaft of the second motor (312) is fixedly connected to a bidirectional threaded rod (313) via a coupling. A limiter is provided on the U-shaped bracket (311). Among them, the U-shaped bracket (311) is used to provide support for the extrusion section (3), and the second motor (312) is used to provide power for the lifting action of the lifting assembly (32).

8. A portable assembly tool for spring assembly and disassembly according to claim 7, characterized in that, The lifting assembly (32) includes two threaded sleeves (321) threadedly connected to the outer wall of the bidirectional threaded rod (313). The left and right sides of the two threaded sleeves (321) are hinged with connecting rods (322), and a plurality of connecting rods (322) are provided with extrusion members. Among them, several connecting rods (322) are arranged in a mirror image, and the distance between the two threaded sleeves (321) is changed by rotating the bidirectional threaded rod (313).

9. A portable assembly tool for spring assembly and disassembly according to claim 8, characterized in that, The clamping component includes a rotating strip (225) fixedly connected to the left side of the connecting block (224), a slider (226) slidably connected to the inner wall of the rotating strip (225), the top of the slider (226) being fixedly connected to the corresponding sliding rod (223), and a clamping plate (227) fixedly connected to the bottom left side of the slider (226). The clamping components are arranged in a circular array. A groove is provided on the rotating strip (225). The slider (226) is slidably connected to the groove. The clamping plate (227) is used to clamp the spring assembly.

10. A portable assembly tool for spring assembly and disassembly according to claim 9, characterized in that, The limiting component includes a limiting strip (314) fixedly connected to the top of the U-shaped bracket (311), the limiting strip (314) being located below the bidirectional threaded rod (313), and the outer walls of both threaded sleeves (321) being slidably connected to the limiting strip (314); and The extrusion component includes a hinge block (323) hinged to the top of a plurality of connecting rods (322), and a pressure plate (324) is fixedly connected to the top of the hinge block (323); Among them, the limiting component is used to limit the two threaded sleeves (321), and the hinge block (323) is used to connect several connecting rods (322) and pressure plate (324). By changing the distance between the two threaded sleeves (321), the height of the hinge block (323) and pressure plate (324) is changed by the several connecting rods (322).

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