Rear anchoring type embedded part fixing device

Abstract

The utility model discloses a rear anchor type embedded part fixing device, which relates to the technical field of building embedded parts and comprises a mounting plate and further comprises an embedded column fixedly arranged on the mounting plate, a groove is arranged at the bottom end of the mounting plate, a bearing disc is rotatably arranged in the groove of the mounting plate, an adjustable clamping component is arranged in the bearing disc, and the embedded column is fixedly arranged on the mounting plate. A frame is arranged below the adjustable clamping assembly, a sleeve is fixedly connected to the frame, a tightening assembly is arranged in the sleeve, an arc-shaped plate is fixedly connected to the bottom of the frame, an elastic piece is fixedly connected to the inner bottom of the arc-shaped plate, a clamping plate is fixedly connected to the bottom of the elastic piece, and mounting cylinders are fixedly connected to the outer walls of the arc-shaped plate on the two sides of the upper portion of the clamping plate. And a piston column is connected to the mounting block in a sliding and penetrating mode, a limiting rod is fixedly connected to the top of the piston column, and a pipeline clamping assembly is arranged below the piston column. The device can achieve rapid mounting and dismounting of the pipeline, use is flexible, and the mounting and dismounting efficiency of the pipeline is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of building embedded parts technology, specifically a rear-anchored embedded part fixing device. Background Technology

[0002] In construction engineering, the installation of embedded parts is a crucial step in ensuring the secure fixing of subsequent equipment and pipelines. Traditional methods of fixing embedded parts typically involve directly pouring concrete or welding. While these methods meet basic fixing requirements, they present several problems in actual construction. First, traditional fixing methods make it difficult to accurately adjust the position of embedded parts during installation, leading to deviations during subsequent equipment installation and affecting construction quality. Second, traditional fixing methods make disassembly and replacement difficult during pipeline installation and maintenance, increasing the complexity of construction and maintenance. Furthermore, the fixing structure of traditional embedded parts often lacks flexibility and cannot adapt to the installation requirements of pipelines with different diameters and orientations, resulting in low construction efficiency.

[0003] With the increasing complexity and precision requirements of construction projects, traditional methods of fixing embedded parts can no longer meet the needs of modern construction. Especially in pipeline installation and maintenance, achieving rapid and flexible fixing and disassembly has become a major challenge. Therefore, designing a rear-anchored embedded part fixing device that can be quickly installed, flexibly adjusted, and easily disassembled and maintained is of significant practical importance. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a rear anchor type embedded part fixing device. By providing a rear anchor type embedded part fixing device with simple structure, convenient operation and strong adaptability, the problem of inconvenient adjustment, difficult disassembly and insufficient flexibility of the embedded part fixing method in the prior art is solved.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An anchor-type pre-embedded component fixing device includes a mounting plate and further includes: multiple pre-embedded columns fixedly mounted on the mounting plate, reinforcing rods fixedly connected between the pre-embedded columns, a groove at the bottom of the mounting plate, a bearing plate rotatably mounted in the groove, an adjustable snap-fit ​​component mounted in the bearing plate, a frame below the adjustable snap-fit ​​component, a sleeve fixedly connected to the frame, a tightening component mounted in the sleeve, an arc-shaped plate fixedly connected to the bottom of the frame, an elastic element fixedly connected to the bottom of the arc-shaped plate, a clamping plate fixedly connected to the bottom of the elastic element, the clamping plate having an arc-shaped structure, mounting cylinders fixedly connected to the outer walls of the arc-shaped plates on both sides above the clamping plate, an elastic movable component mounted inside the mounting cylinder, a stop block mounted at the end of the elastic movable component away from the arc-shaped plate, mounting blocks fixedly connected to the bottom two sides of the arc-shaped plate below the stop block, a piston column slidably penetratingly connected to the mounting block, a limiting rod fixedly connected to the top of the piston column, the top of the limiting rod having an arc-shaped structure, the limiting rod correspondingly cooperating with the stop block, and a pipe clamping component mounted below the piston column.

[0007] As a preferred embodiment of the present invention, the adjustable snap-fit ​​assembly includes a mounting groove formed on a support plate, an adjusting rod rotatably disposed in the mounting groove on the support plate, a drive column fixedly connected to one axial end of the adjusting rod, an adjusting block threaded onto the adjusting rod, the adjusting block being slidably disposed in the mounting groove, and a support column fixedly connected to the bottom of the adjusting block.

[0008] As a preferred embodiment of the present invention, the tightening assembly includes a lead screw rotatably disposed within a sleeve, movable rods threaded onto both ends of the lead screw, arc-shaped rods fixedly connected to both sides of the top of the movable rods, the bottom of the movable rods being slidably connected to the bottom wall of the sleeve, and an adjusting handle rotatably connected to the outer wall of the sleeve at one axial end of the lead screw, the rotating end of the adjusting handle being fixedly connected to the lead screw.

[0009] As a preferred embodiment of the present invention, the elastic movable component includes a movable column that is slidably disposed inside the mounting cylinder. The end of the movable column away from the arc plate is fixedly connected to the stop block. A positioning sleeve is fixedly fitted on the movable column inside the mounting cylinder, and a reset member is fitted on the movable column inside the mounting cylinder on one side of the positioning sleeve.

[0010] As a preferred embodiment of the present invention, the pipe clamping assembly includes clamping rods disposed on both sides of the bottom of the arc plate, the top of the clamping rods being rotatably connected to the mounting block, a transmission rod being disposed between the clamping rods and the piston column, one end of the transmission rod being hinged to the bottom end of the piston column, and the end of the transmission rod away from the piston column being hinged to the clamping rod, and a compression member being sleeved on the piston column below the mounting block.

[0011] A method for using a rear-anchor type embedded part fixing device includes the following steps:

[0012] S1. During actual construction, the embedded columns and reinforcing rods are embedded in the concrete pouring layer. After the concrete is poured, the sleeve is inserted into the adjustable snap-fit ​​component, and the tightening component is used to achieve the installation connection.

[0013] S2. When it is necessary to install a pipe, the operator can directly place the pipe in the arc plate and squeeze the clamping plate. Under the action of the elastic movable component, the pipe clamping component can be driven to close to realize the automatic clamping and fixing of the pipe, and realize the rapid positioning and installation of the pipe. After the installation is completed, the operator can rotate the bearing plate to adjust the pipe clamping direction as needed.

[0014] S3. When it is necessary to disassemble, replace or maintain the pipeline, the operator can manually rotate the clamping assembly. Under the action of the elastic element between the arc plate and the clamping plate, the pipeline will be pulled out. At the same time, the elastic movable component will reset and the clamping assembly will be in the open state. When the pipeline needs to be installed later, the above steps can be repeated to achieve rapid installation of the pipeline.

[0015] This invention has the following advantages: During actual installation and use, the clamping assembly is in the open state. The operator can directly place the pipe under the clamping plate of the arc-shaped plate, and then squeeze the clamping plate. The elastic element is compressed, and the clamping plate squeezes the movable column. The movable column drives the stop block to move away from the arc-shaped plate, and the stop block separates from the limit rod. Under the action of the compression element, the piston column will reset and move downward. Then, under the action of the transmission rod, the clamping rod will rotate to achieve clamping and support of the bottom of the pipe. This process realizes rapid pipe installation, makes operation and use more convenient, greatly improves the work efficiency of pipe installation and positioning, and at the same time, it makes pipe disassembly easier. During replacement or maintenance, the operator only needs to manually rotate the clamping rod to both sides. Under the action of the transmission rod, the piston rod will move upward, compressing the compression component on the piston rod. At the same time, the limiting rod at the top of the piston rod will move above the stop block. Under the action of the reset component on one side of the positioning sleeve, the stop block can limit the limiting rod. In this state, it is easy for the operator to remove the pipe. When replacing it again, the above installation steps can be repeated. Overall, this device can realize the rapid installation and disassembly of pipes, is easy to operate and use, can effectively improve the efficiency of pipe installation and disassembly, and is flexible in use, which can meet the installation of pipes of different diameters. Attached Figure Description

[0016] Figure 1 A schematic diagram of a rear-anchor type embedded part fixing device. Figure 1 .

[0017] Figure 2 A schematic diagram of a rear-anchor type embedded part fixing device. Figure 2 .

[0018] Figure 3This is a side view of a rear anchor type pre-embedded component fixing device.

[0019] Figure 4 This is a schematic diagram of the fixing component in a rear anchor type pre-embedded part fixing device.

[0020] Figure 5 for Figure 4 A magnified structural diagram of A in the middle.

[0021] Figure 6 This is a schematic diagram of the structure of the embedded part in a rear anchor type embedded part fixing device.

[0022] Figure 7 This is a schematic diagram of the structure of a rear-anchor type embedded part fixing device during the pre-embedding of embedded parts.

[0023] Figure 8 This is a structural diagram of a rear-anchor type embedded part fixing device in its installation and use state.

[0024] In the diagram: 1. Mounting plate; 2. Embedded column; 3. Reinforcing rod; 4. Arc plate; 5. Movable column; 6. Mounting cylinder; 7. Limiting rod; 8. Stop block; 9. Piston column; 10. Mounting block; 11. Elastic element; 12. Frame; 13. Compression element; 14. Transmission rod; 15. Clamping rod; 16. Limiting sleeve; 17. Clamping plate; 18. Bearing plate; 19. Adjusting groove; 20. Adjusting block; 21. Adjusting rod; 22. Mounting groove; 23. Drive column; 24. Groove; 25. Sleeve; 26. Movable rod; 27. Arc rod; 28. Screw; 29. ​​Adjusting handle; 30. Positioning sleeve; 31. Reset element; 32. Bearing column; 33. Support template; 34. Movable groove; 35. Screw; 36. Fixing block; 37. Tensioning rod. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] Example 1, please refer to Figures 1-8A rear-anchor type embedded component fixing device includes a mounting plate 1 and further includes: multiple embedded columns 2 fixedly mounted on the mounting plate 1, with reinforcing rods 3 fixedly connected between the embedded columns 2; a groove 24 is formed at the bottom end of the mounting plate 1, and a bearing plate 18 is rotatably mounted in the groove 24; an adjustable snap-fit ​​component is formed in the bearing plate 18; a frame 12 is set below the adjustable snap-fit ​​component; a sleeve 25 is fixedly connected to the frame 12; a tightening component is set in the sleeve 25; an arc-shaped plate 4 is fixedly connected to the bottom of the frame 12, and an elastic element is fixedly connected to the bottom of the arc-shaped plate 4. 11. The bottom of the elastic element 11 is fixedly connected to the clamping plate 17, which has an arc-shaped structure. The outer walls of the arc-shaped plates 4 on both sides above the clamping plate 17 are fixedly connected to the mounting cylinder 6. An elastic movable component is set inside the mounting cylinder 6. A stop block 8 is set at the end of the elastic movable component away from the arc-shaped plate 4. The bottom two walls of the arc-shaped plate 4 below the stop block 8 are fixedly connected to the mounting blocks 10. A piston column 9 is slidably connected through the mounting blocks 10. A limiting rod 7 is fixedly connected to the top of the piston column 9. The top of the limiting rod 7 has an arc-shaped structure. The limiting rod 7 and the stop block 8 are used in corresponding cooperation. A pipe clamping component is set below the piston column 9.

[0027] Before pipe installation, the clamping assembly is in the open state, and the limit rod 7 and the stop block 8 are in the locked position. During pipe installation, the clamping plate 17 is squeezed and, under the action of the elastic movable component, the clamping assembly can be closed to clamp and fix the pipe. This process is convenient to operate and enables rapid pipe installation, improving the construction efficiency of workers. At the same time, when it is necessary to replace or disassemble the pipe, the operator can open the clamping assembly. Under the action of the elastic movable component, the opened clamping assembly is limited and kept in the normally open state. This process enables rapid pipe disassembly. When installing pipes later, the above steps can be repeated for rapid installation. Overall, the device is convenient to operate and flexible to use, greatly improving the efficiency of pipe installation and disassembly during construction operations, and has a better effect.

[0028] Example 2, please refer to Figures 1-8 The adjustable snap-fit ​​assembly includes a mounting groove 22 and an adjustment groove 19 formed on the support plate 18. An adjustment rod 21 is rotatably disposed in the mounting groove 22 on the support plate 18. One end of the adjustment rod 21 is fixedly connected to a drive column 23, which is disposed in the adjustment groove 19. An adjustment block 20 is threaded onto the adjustment rod 21 and is slidably disposed in the mounting groove 22. The bottom of the adjustment block 20 is fixedly connected to the support column 32. In actual use, the position of the adjustment block 20 can be adjusted by rotating the drive column 23 to drive the adjustment rod 21 to rotate.

[0029] The tightening assembly includes a lead screw 28 rotatably disposed within a sleeve 25, with movable rods 26 threaded onto both ends of the lead screw 28, and arc-shaped rods 27 fixedly connected to both sides of the top of the movable rods 26. The bottom of the movable rods 26 is slidably connected to the bottom wall of the sleeve 25, and an adjusting handle 29 is rotatably connected to the outer wall of the sleeve 25 at one axial end of the lead screw 28. The rotating shaft end of the adjusting handle 29 is fixedly connected to the lead screw 28.

[0030] In actual use, the upper end of the sleeve 25 is fitted onto the bearing column 32, and then the screw 28 is rotated to move the arc rods 27 on both sides of the movable rod 26 to achieve clamping and fixing installation. At the same time, the operator can rotate the adjusting rod 21 to move the adjusting block 20 according to the actual construction needs to adjust the pipe clamping position, further improving the flexibility of the device.

[0031] The elastic movable component includes a movable column 5 that is slidably disposed inside the mounting cylinder 6. The end of the movable column 5 away from the arc plate 4 is fixedly connected to the stop block 8. A positioning sleeve 30 is fixedly sleeved on the movable column 5 inside the mounting cylinder 6. A reset member 31 is sleeved on the movable column 5 inside the mounting cylinder 6 on one side of the positioning sleeve 30.

[0032] The pipe clamping assembly includes clamping rods 15 disposed on both sides of the bottom of the arc plate 4. The top of the clamping rods 15 is rotatably connected to the mounting block 10. A transmission rod 14 is disposed between the clamping rods 15 and the piston column 9. One end of the transmission rod 14 is hinged to the bottom end of the piston column 9, and the end of the transmission rod 14 away from the piston column 9 is hinged to the clamping rods 15. A compression member 13 is sleeved on the piston column 9 below the mounting block 10. A limiting sleeve 16 is fixedly sleeved on the piston column 9 below the compression member 13. In actual use, when the clamping rods 15 are rotated, the piston column 9 will move up and down under the action of the transmission rod 14. When the piston column 9 moves up, the compression member 13 will be compressed. When the piston column 9 moves down, the compression member 13 will extend and return to its original position.

[0033] Example 3, please refer to Figures 1-8 When pre-installing the mounting plate 1, a support template 33 is set at the bottom of the mounting plate 1. Movable grooves 34 are opened on both sides of the support template 33. A tensioning rod 37 is slidably set in the movable grooves 34. A fixing block 36 is fixedly connected to the bottom of the support template 33 on one side of the tensioning rod 37. A screw rod 35 is threaded through the fixing block 36. One end of the screw rod 35 is rotatably connected to the tensioning rod 37. In actual use, the operator can rotate the screw rod 35 to drive the tensioning rod 37 to move. The tensioning rod 37 can realize the limiting and fixing of the mounting plate 1. In the actual pouring process, it can ensure that the mounting plate 1 and the pre-embedded column 2 and reinforcing rod 3 above it are in a stable state, and ensure the stability of the pre-embedded parts during the pouring process.

[0034] A method for using a rear-anchor type embedded part fixing device includes the following steps:

[0035] S1. During actual construction, the pre-embedded column 2 and reinforcing rod 3 are pre-embedded in the concrete pouring layer. After the concrete is poured, the sleeve 25 is inserted into the adjustable snap-fit ​​component, and the tightening component is used to achieve the installation connection.

[0036] S2. When it is necessary to install a pipe, the operator can directly place the pipe in the arc plate 4 and squeeze the clamping plate 17. Under the action of the elastic movable component, the pipe clamping component can be driven to close to realize the automatic clamping and fixing of the pipe, and realize the rapid positioning and installation of the pipe. After the installation is completed, the operator can rotate the bearing plate 18 to adjust the pipe clamping direction as needed.

[0037] S3. When it is necessary to disassemble, replace or maintain the pipeline, the operator can manually rotate the clamping component. Under the action of the elastic element 11 between the arc plate 4 and the clamping plate 17, the pipeline will be pulled out. At the same time, the elastic movable component will reset and the clamping component will be in the open state. When the pipeline needs to be installed later, the above steps can be repeated to achieve the rapid installation of the pipeline.

[0038] In the implementation of this invention, before actual use, the mounting plate 1, embedded column 2, and reinforcing rod 3 are placed above the support template 33 according to the actual required positions. Then, concrete is poured, and the embedded column 2 and reinforcing rod 3 are embedded in the concrete. After the concrete is poured and cooled, the support template 33 is removed. Then, the sleeve 25 above the frame 12 is connected to the bearing column 32. Subsequently, by rotating the screw 28, the arc rod 27 on the movable rod 26 is engaged with the bearing column 32 to achieve installation. In actual use, the operator places the water pipe to be installed between the clamping rods 15. The water pipe contacts the clamping plate 17 above and drives it to rise. The clamping plate 17 contacts the movable column 5, and the movable column 5 will move, thereby driving the stop block 8 to move and separate from the limit rod 7. Under the action of the compression component 13, the piston column 9 is reset, and then through the transmission... The moving rod 14 drives the clamping rod 15 to rotate, thereby clamping and fixing the water pipe. When the water pipe needs to be replaced or repaired, it can be quickly disassembled by manually moving the clamping rod 15. Subsequent installations can be completed by repeating the above installation steps. At the same time, since the water pipe may not be straight during installation, the operator can rotate the bearing plate 18 and then rotate the adjusting rod 21 to move the adjusting block 20, thereby adjusting the fixed position of the pipe and adjusting the pipe line. Compared with the traditional fixing method, this method is faster and more convenient for installing and fixing water pipes, and it is easier to disassemble and assemble, improving the efficiency of workers in pipe installation, disassembly and maintenance. It is also convenient to adjust and lock the pipe position and adjust the clamping direction, making it more flexible to use. Furthermore, the embedded column 2 with the reinforcing rod 3 enables the entire structure to bear a greater load.

[0039] All standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0040] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] The accompanying drawings of the embodiments disclosed in this invention only involve structures relevant to the embodiments disclosed in this invention. Other structures can be referred to with common designs. Unless otherwise specified, the same embodiment and different embodiments of this invention can be combined with each other.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A post-anchored pre-embedded fixing device comprising a mounting plate (1), characterized in that, Also includes: A number of pre-embedded columns (2) are fixedly installed on the mounting plate (1). Reinforcing rods (3) are fixedly connected between the pre-embedded columns (2). A groove (24) is opened at the bottom of the mounting plate (1). A bearing plate (18) is rotatably installed in the groove (24) of the mounting plate (1). An adjustable snap-fit ​​component is opened in the bearing plate (18). A frame (12) is set below the adjustable snap-fit ​​component. A sleeve (25) is fixedly connected on the frame (12). An adjusting component is set in the sleeve (25). An arc plate (4) is fixedly connected to the bottom of the frame (12). An elastic element (11) is fixedly connected to the bottom of the arc plate (4). The bottom of the elastic element (11) is fixed. A connecting clamping plate (17) is an arc-shaped structure. An installation cylinder (6) is fixedly connected to the outer wall of the arc-shaped plate (4) on both sides above the clamping plate (17). An elastic movable component is provided inside the installation cylinder (6). A stop block (8) is provided at the end of the elastic movable component away from the arc-shaped plate (4). An installation block (10) is fixedly connected to the bottom two walls of the arc-shaped plate (4) below the stop block (8). A piston column (9) is slidably connected through the installation block (10). A limiting rod (7) is fixedly connected to the top of the piston column (9). The top of the limiting rod (7) is an arc-shaped structure. The limiting rod (7) and the stop block (8) are used in corresponding cooperation. A pipe clamping component is provided below the piston column (9).

2. A post anchor fixture according to claim 1, wherein, The adjustable snap-fit ​​assembly includes a mounting groove (22) on a support plate (18). An adjusting rod (21) is rotatably disposed in the mounting groove (22) on the support plate (18). One end of the adjusting rod (21) is fixedly connected to a drive column (23) axially. An adjusting block (20) is threaded onto the adjusting rod (21). The adjusting block (20) is slidably disposed in the mounting groove (22). The bottom of the adjusting block (20) is fixedly connected to a support column (32).

3. A post-anchored pre-embedded fixing device according to claim 2, characterized in that, The tightening assembly includes a lead screw (28) rotatably disposed within a sleeve (25), with movable rods (26) threaded onto both ends of the lead screw (28), and arc-shaped rods (27) fixedly connected to both sides of the top of the movable rods (26). The bottom of the movable rods (26) is slidably connected to the bottom wall of the sleeve (25), and an adjusting handle (29) is rotatably connected to the outer wall of the sleeve (25) at one axial end of the lead screw (28). The rotating shaft end of the adjusting handle (29) is fixedly connected to the lead screw (28).

4. The post anchor fixture of claim 1, wherein, The elastic movable component includes a movable column (5) that is slidably disposed inside the mounting cylinder (6). The end of the movable column (5) away from the arc plate (4) is fixedly connected to the stop block (8). A positioning sleeve (30) is fixedly sleeved on the movable column (5) inside the mounting cylinder (6). A reset piece (31) is sleeved on the movable column (5) inside the mounting cylinder (6) on one side of the positioning sleeve (30).

5. A post-anchored pre-embedded fixing device according to claim 4, characterized in that, The pipe clamping assembly includes clamping rods (15) disposed on both sides of the bottom of the arc plate (4). The top of the clamping rod (15) is rotatably connected to the mounting block (10). A transmission rod (14) is disposed between the clamping rod (15) and the piston column (9). One end of the transmission rod (14) is hinged to the bottom end of the piston column (9). The end of the transmission rod (14) away from the piston column (9) is hinged to the clamping rod (15). A compression member (13) is sleeved on the piston column (9) below the mounting block (10).

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