Wedge assembling tool and positioning device

Abstract

The utility model provides a wedge assembly tool and locating device, relates to rolling mill technical field, wedge assembly tool includes fixture subassembly and center block, the first side face, second side face and third side face of center block are provided with fixture subassembly respectively, first side face and second side face are arranged oppositely, and the center block is provided with the fixture subassembly. The third side face is located between the first side face and the second side face, the first side face is parallel to the second side face, the third side face is perpendicular to the first side face, every two adjacent clamp assemblies are connected through chamfers, and the clamp assemblies are used for clamping wedges of the four wedge assemblies. According to the utility model, the assembling efficiency of four beveling components can be effectively improved.

Description

A wedge assembly tool and positioning device Technical Field

[0001] This utility model relates to the field of rolling mill technology, and more specifically, to a wedge assembly tool and positioning device. Background Technology

[0002] In modern industrial equipment, four-wedge assemblies, with their unique mechanical transmission characteristics, are widely used in key equipment such as uncoilers, coilers, and stamping dies in rolling mills. For example, a drum structure composed of four wedge assemblies achieves radial expansion and contraction of the drum through the axial movement of the wedges, meeting the winding requirements of strips of different specifications. In stamping dies, the complex mechanism composed of four wedge assemblies can change the direction of force and transmit power, realizing multi-angle stamping and forming processes. With its efficient force transmission and precise motion control, the four-wedge assembly has become an important component for improving equipment performance and production efficiency.

[0003] However, since the wedges in the four-piece wedge assembly are relatively long, the small deviations between each wedge may be amplified as the length increases, resulting in poor coordination of the four wedge positions and affecting the assembly efficiency of the four-piece wedge assembly. Summary of the Invention

[0004] The problem this invention addresses is how to improve the assembly efficiency of a four-piece wedge assembly.

[0005] To solve the above problems, this utility model provides a wedge assembly tool and positioning device.

[0006] In a first aspect, the present invention provides a wedge assembly tool, including a clamping assembly and a center block. The clamping assembly is respectively provided on a first side, a second side, and a third side of the center block. The first side and the second side are arranged opposite to each other, and the third side is located between the first side and the second side. The first side is parallel to the second side, and the third side is perpendicular to the first side. Two adjacent clamping assemblies are connected by a chamfer. The clamping assembly is used to clamp the wedges of four wedge assemblies.

[0007] Optionally, the clamping assembly includes a first jaw and a second jaw. The first jaw includes a first base plate, and a first side plate extending from one end of the first base plate in a direction perpendicular to the first base plate. The second jaw includes a second base plate, and a second side plate extending from one end of the second base plate in a direction perpendicular to the second base plate. The end of the first base plate away from the first side plate is connected to the end of the second base plate away from the second side plate. A first protrusion extends from the end of the first side plate away from the first base plate in a direction toward the second side plate. A second protrusion extends from the end of the second side plate away from the second base plate in a direction toward the first side plate. An outer chamfer is provided at the connection between the first base plate and the first side plate, and an outer chamfer is provided at the connection between the second base plate and the second side plate.

[0008] Optionally, the tool further includes a connecting bolt, wherein the chamfered surface of the first claw has a connecting through hole facing toward the direction of the second base plate, and a connecting thread blind hole with a position matching the connecting through hole is provided at the connection end between the second base plate and the first base plate, and the connecting bolt passes through the connecting through hole and is threadedly connected to the connecting thread blind hole.

[0009] Optionally, the tool further includes a first fixing bolt, which passes through a second base plate disposed on the first side and is threadedly connected to the center block.

[0010] Optionally, a first fixing thread blind hole is provided on the first side, and the first fixing bolt passes through the second base plate on the first side and is threadedly connected to the first fixing thread blind hole.

[0011] Optionally, the tool also includes a second fixing bolt, which passes through the second base plate disposed on the second side and is threadedly connected to the center block.

[0012] Optionally, a second fixing thread blind hole is provided on the second side, and the second fixing bolt passes through the second base plate on the second side and is threadedly connected to the second fixing thread blind hole.

[0013] Optionally, the tool also includes a third fixing bolt, which passes through the second base plate disposed on the third side and is threadedly connected to the center block.

[0014] Optionally, a third fixing thread blind hole is provided on the third side surface, and the third fixing bolt passes through the second base plate on the third side surface and is threadedly connected to the third fixing thread blind hole.

[0015] Secondly, this utility model provides a positioning device, including at least two wedge assembly tools as described in the first aspect, the wedge assembly tools being used to sequentially arrange four wedge assemblies along their axial direction.

[0016] The beneficial effects of the wedge assembly tool and positioning device of this utility model are as follows: Clamping assemblies are respectively set on three adjacent sides of the central block (the first and second sides arranged in parallel relative positions, and the third side located between the two sides). These adjacent three sides allow for precise clamping of the wedges on both sides and below the four wedge assemblies. The upper wedge is supported above the central block. Through the clamping and support of the central block and clamping assemblies, deformation along the length direction due to the wedge's own gravity is avoided. This allows the four wedges to be simultaneously positioned and clamped during horizontal assembly, enabling rapid and accurate assembly of the four wedge assemblies. This significantly improves the assembly efficiency of the four wedge assemblies. Furthermore, the chamfered connection between adjacent clamping assemblies enhances structural stability and optimizes the spatial structure between them, ensuring a tight fit and mutual support between the various structures. This reduces the possibility of loosening or deformation of the clamping assemblies due to excessive stress, ensuring the stability of the wedges when clamped. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of the wedge assembly tool in an embodiment of this utility model;

[0018] Figure 2 is a schematic diagram of the structure of the first claw in an embodiment of this utility model;

[0019] Figure 3 is a schematic diagram of the structure of the second claw in an embodiment of this utility model;

[0020] Figure 4 is a structural schematic diagram of the four wedge components in an embodiment of this utility model;

[0021] Figure 5 is a three-dimensional structural diagram of the four wedge components in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Center block; 11-First side; 12-Second side; 13-Third side; 14-First fixed thread blind hole; 15-Second fixed thread blind hole; 16-Third fixed thread blind hole; 2-Clamping assembly; 21-First jaw; 211-First base plate; 212-First side plate; 213-First protrusion; 214-Connecting through hole; 22-Second jaw; 221-Second base plate; 222-Second side plate; 223-Second protrusion; 224-Second connecting thread blind hole; 225-Fixing through hole; 3-Four-piece wedge assembly; 31-First wedge; 32-Second wedge; 33-Third wedge; 34-Fourth wedge; 35-Connector. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0025] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0026] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] In related technologies, in cold rolling uncoiler and coiler projects, the four-wedge assembly is a mechanical mechanism composed of four wedge mechanisms. This mechanism transforms vertical motion into horizontal or inclined motion through the coordinated use of wedges and sliders. As a key component for equipment operation, the length of the four-wedge assembly is designed based on the overall structure and operational functions of the equipment. However, this relatively long length presents numerous challenges for assembly. According to assembly requirements, all four wedges must be assembled simultaneously to ensure the stability and accuracy of subsequent equipment operation. However, in actual operation, due to the excessive length of the wedges, it is difficult for construction personnel to synchronously control the assembly progress and position of the four wedges. Typically, construction personnel rely on their own experience and verbal communication within the team to complete the assembly. However, the complex construction site environment and severe noise interference lead to poor communication and make it difficult to guarantee the consistency of personnel operations. This can cause deviations in the assembly progress of the four wedges, making it difficult to achieve synchronous assembly. This requires a significant amount of manpower and time for adjustments, severely impacting the assembly efficiency of the four-wedge assembly. Furthermore, the wedge's center of gravity is difficult to stabilize during prolonged assembly and debugging, and it can easily sway, greatly increasing the risk of it falling. If the wedge falls, the workers below may also face a safety threat.

[0028] To address the problems existing in the aforementioned related technologies, this utility model provides a wedge assembly tool and positioning device.

[0029] As shown in Figures 1, 4, and 5, an embodiment of the present invention provides a wedge assembly tool, including a clamping assembly 2 and a center block 1. The clamping assembly 2 is respectively disposed on a first side 11, a second side 12, and a third side 13 of the center block 1. The first side 11 and the second side 12 are disposed opposite to each other, and the third side 13 is located between the first side 11 and the second side 12. The first side 11 is parallel to the second side 12, and the third side 13 is perpendicular to the first side 11. Two adjacent clamping assemblies 2 are connected by a chamfer. The clamping assembly 2 is used to clamp the wedges of four wedge assemblies 3.

[0030] It should be noted that the wedge assembly tool in this embodiment consists of a clamping assembly 2 and a center block 1. By clamping and fixing the wedges with the clamping assembly 2, the assembly efficiency and safety of the four wedge assemblies 3 can be significantly improved. The center block 1, as the core support structure of the entire tool, can be a cube structure. In the four wedge assemblies 3, the distance between two opposite wedges is the same. The height of the center block 1 of this cube structure matches the distance between two opposite wedges, so that the wedge assembly tool can be set between the four wedges, and the wedges in the corresponding directions can be clamped by the corresponding clamping assembly 2.

[0031] Specifically, the first side 11 and the second side 12 of the center block 1 are located on opposite left and right sides of the center block 1, respectively, and the third side 13 is the bottom surface of the center block 1. Before assembling the four wedge components 3, the first wedge 31 located on the left side is clamped by the clamping component 2 set on the first side 11, the third wedge 33 located on the right side is clamped by the clamping component 2 set on the second side 12, and the fourth wedge 34 located below is clamped by the clamping component 2 set on the third side 13. The second wedge 32 located above is placed on top of the center block 1. Due to gravity, the offset direction of the second wedge 32 is vertically downward. At this time, due to the support of the center block 1 located below, the second wedge 32 can be prevented from deforming in the vertical direction.

[0032] Furthermore, by chamfering the right angle at the bottom edge of clamping assembly 2, the connection between two adjacent clamping assemblies 2 is transformed into a transitional bevel. To ensure that the relative positions of two adjacent clamping assemblies 2 are perpendicular after connection, thus maintaining the stability of the wedge's original position after clamping, the angle between the bevel of the chamfer of clamping assembly 2 and the bottom surface can be set to 45°. In this way, the positions of two adjacent clamping assemblies 2 remain perpendicular to each other after connection through the bevel, allowing clamping assembly 2 to better fit with the center block 1 of the cube structure. The distribution of four wedges in the top, bottom, left, and right directions requires clamping assemblies 2 to be arranged compactly. The chamfer design reduces the redundant parts of adjacent components, allowing clamping assembly 2 and the three rough surfaces of the center block 1 to fit more tightly without affecting the clamping function, thereby achieving efficient use of the clamping assembly space and ensuring that the wedges in all four directions can be accurately positioned and clamped.

[0033] In this embodiment, clamping assemblies 2 are respectively provided on three adjacent sides of the central block 1 (the first side 11 and the second side 12, which are arranged in parallel relative positions, and the third side 13, which is located between the two sides). The three adjacent sides are used to accurately clamp the wedges on both sides and below the four wedge assemblies 3, and the upper wedges are supported above the central block 1. Through the clamping and support of the central block 1 and the clamping assemblies, the wedges are prevented from deforming along their length due to their own gravity. This allows the four wedges to be positioned and clamped synchronously during horizontal assembly, enabling the four wedges to be assembled quickly and accurately. This greatly improves the assembly efficiency of the four wedge assemblies 3. Furthermore, the chamfered connection of the adjacent clamping assemblies 2 not only strengthens the structural stability but also optimizes the spatial structure between the clamping assemblies 2, ensuring that the various structures fit tightly and support each other. This reduces the possibility of the clamping assemblies 2 loosening or deforming due to excessive stress, ensuring the stability of the wedges when clamped.

[0034] As shown in Figures 1 to 3, optionally, the clamping assembly 2 includes a first jaw 21 and a second jaw 22. The first jaw 21 includes a first base plate 211, and a first side plate 212 extending from one end of the first base plate 211 in a direction perpendicular to the first base plate 211. The second jaw 22 includes a second base plate 221, and a second side plate 222 extending from one end of the second base plate 221 in a direction perpendicular to the second base plate 221. The end of the first base plate 211 away from the first side plate 212 is connected to the end of the second base plate 221 away from the second side plate 222. The end of the first side plate 212 away from the first base plate 211 extends into a first protrusion 213 in a direction toward the second side plate 222. The end of the second side plate 222 away from the second base plate 221 extends into a second protrusion 223 in a direction toward the first side plate 212.

[0035] In this optional embodiment, a first side plate 212 extends from one end of the first base plate 211 in a direction perpendicular to the first base plate 211. The first side plate 212 and the first base plate 211 are perpendicular to each other and together form an L-shaped basic frame. This L-shaped structure not only enhances the three-dimensional strength of the first claw 21, but also provides a spatial basis for the subsequent clamping function. At the end of the first side plate 212 away from the first base plate 211, a first protrusion 213 extends in a direction toward the second side plate 222. The first protrusion 213 serves as a key clamping force point, which can precisely match the specific part of the clamped wedge. Through cooperation with the second claw 22, a stable clamping of the wedge is achieved. The structure of the second claw 22 is symmetrical and complementary to that of the first claw 21. The second claw 22 is based on the second base plate 221, and a second side plate 222 extends perpendicularly from one end of the second base plate 221, forming a perpendicular L-shaped structure with the second base plate 221. The end of the second side plate 222 away from the second base plate 221 extends into a second protrusion 223 along the direction towards the first side plate 212. The second protrusion 223 corresponds to the first protrusion 213. When clamping the wedge, the two protrusions constrain the wedge from different directions, forming a stable clamping force. The end of the first base plate 211 away from the first side plate 212 is connected to the end of the second base plate 221 away from the second side plate 222, thereby forming a single clamping structure with the first jaw 21 and the second jaw 22. Through their synergistic effect, the first protrusion 213 and the second protrusion 223 can apply displacement constraints to the clamped object from different positions, ensuring that the wedge will not shift or loosen during clamping, thus achieving a precise and stable clamping function. This ensures the stability of the wedge position in the four-piece wedge assembly 3, avoids possible offsets during the assembly of the four-piece wedge assembly 3, saves manpower and time consumed in the adjustment process, and improves the assembly efficiency of the four-piece wedge assembly 3. Furthermore, by setting external chamfers at the connection points of the first base plate 211 and the first side plate 212 and the second base plate 221 and the second side plate 222 respectively, two adjacent clamping assemblies 2 can be connected by the bevels of the corresponding external chamfers, thereby ensuring a tight connection, making the connection between the clamping assemblies 2 more stable, avoiding deformation after being subjected to force, and improving the stability of the clamping assemblies 2 when clamping the wedge.

[0036] As shown in Figures 1 to 3, optionally, the tool also includes a connecting bolt. The chamfered surface of the first claw 21 has a connecting through hole 214 facing towards the second base plate 221. A connecting thread blind hole with a position matching the connecting through hole 214 is provided at the connection end between the second base plate 221 and the first base plate 211. The connecting bolt passes through the connecting through hole 214 and is threadedly connected to the connecting thread blind hole.

[0037] In this optional embodiment, a connecting through hole 214 penetrating the first base plate 211 is provided on the outer chamfered surface of the first claw 21. The radial direction of the connecting through hole 214 points from the chamfer to the second base plate 221. A threaded blind hole is provided at the corresponding position of the end of the second base plate 221 that connects to the first base plate 211. After the connecting bolt passes through the connecting through hole 214 penetrating the first base plate 211, it is threadedly connected to the threaded blind hole located on the second pad, so that the first claw 21 and the second claw 22 are bolted together to form the clamp assembly 2. In order to ensure the stability of the bolted connection, the connecting threaded blind hole of the second base plate 221 and the connecting through hole 214 of the first claw 21 can adopt a precise positioning design. For example, the depth of the blind hole can be 1.5 times the bolt diameter, which ensures the effective engagement length of the thread and avoids penetrating the second base plate 221.

[0038] As shown in Figures 1 to 3, optionally, the tool also includes a first fixing bolt, which passes through the second base plate 221 disposed on the first side 11 and is threadedly connected to the center block 1.

[0039] Optionally, a first fixing thread blind hole 14 is provided on the first side 11, and the first fixing bolt passes through the second base plate 221 on the first side 11 and is threadedly connected to the first fixing thread blind hole 14.

[0040] In this optional embodiment, the first fixing threaded blind hole 14 on the first side 11 corresponds precisely to the fixing through hole 225 on the corresponding second base plate 221, providing a precise positioning reference for the assembly of the first fixing bolt. This ensures that the connection between the clamp assembly 2 and the first side 11 maintains consistent positional accuracy during assembly, reducing connection instability caused by assembly errors. The first fixing bolt passes through the fixing through hole 225 and is tightly threaded into the first fixing threaded blind hole 14, forming a reliable fastening structure. When the clamp assembly 2 clamps the wedge, the force generated by the wedge is transmitted to the first fixing bolt through the clamp assembly 2. The axial tensile force and friction generated by the threaded connection effectively resist the loosening tendency of the wedge under force, preventing deformation or displacement of the clamp assembly 2 and ensuring its stability even under large external forces, thereby guaranteeing the positioning effect of the wedge.

[0041] As shown in Figures 1 to 3, optionally, the tool also includes a second fixing bolt, which passes through the second base plate 221 disposed on the second side 12 and is threadedly connected to the center block 1.

[0042] Optionally, a second fixing thread blind hole 15 is provided on the second side 12, and the second fixing bolt passes through the second base plate 221 on the second side 12 and is threadedly connected to the second fixing thread blind hole 15.

[0043] In this optional embodiment, the second fixing threaded blind hole 15 opened on the second side 12 corresponds precisely to the fixing through hole 225 on the corresponding second base plate 221, providing a precise positioning reference for the assembly of the second fixing bolt. This ensures that the connection between the clamp assembly 2 and the second side 12 maintains consistent positional accuracy during assembly, reducing connection instability caused by assembly errors. The second fixing bolt passes through the fixing through hole 225 and is tightly threaded into the second fixing threaded blind hole 15, forming a reliable fastening structure. When the clamp assembly 2 clamps the wedge, the force generated by the wedge is transmitted to the second fixing bolt through the clamp assembly 2. The axial tensile force and friction generated by the threaded connection can effectively resist the loosening tendency of the wedge under force, preventing the clamp assembly 2 from deforming or displacing, ensuring that it remains stable even under large external forces, thereby guaranteeing the positioning effect of the wedge.

[0044] As shown in Figures 1 to 3, optionally, the tool also includes a third fixing bolt, which passes through the second base plate 221 disposed on the third side 13 and is threadedly connected to the center block 1.

[0045] Optionally, a third fixing thread blind hole 16 is provided on the third side surface 13, and the third fixing bolt passes through the second base plate 221 on the third side surface 13 and is threadedly connected to the third fixing thread blind hole 16.

[0046] In this optional embodiment, the third fixing thread blind hole 16 on the third side 13 corresponds precisely to the fixing through hole 225 on the corresponding second base plate 221, providing a precise positioning reference for the assembly of the second fixing bolt. This ensures that the connection between the clamp assembly 2 and the third side 13 maintains consistent positional accuracy during assembly, reducing connection instability caused by assembly errors. The third fixing bolt passes through the fixing through hole 225 and is tightly threaded into the third fixing thread blind hole 16, forming a reliable fastening structure. When the clamp assembly 2 clamps the wedge, the force generated by the wedge is transmitted to the third fixing bolt through the clamp assembly 2. The axial tensile force and friction generated by the threaded connection effectively resist the loosening tendency of the wedge under force, preventing deformation or displacement of the clamp assembly 2 and ensuring its stability even under large external forces, thereby guaranteeing the positioning effect of the wedge.

[0047] As shown in Figures 1 to 5, a positioning device provided by this utility model embodiment includes at least two wedge assembly tools as described above, which are used to sequentially arrange four wedge assemblies 3 along their axial direction.

[0048] Specifically, depending on the length of the wedges in the four-piece wedge assembly, one or more wedge assembly tools can be selected as needed. For example, when the wedges are long, if only one wedge assembly tool is used at one end of the four-piece wedge assembly, the middle part may still be affected by the weight of the wedge itself or external forces due to the length of the wedge, causing the wedges in the middle part to shift or deform. In this case, the four-piece wedge assembly cannot be installed smoothly. In this case, another wedge assembly tool can be set at the part with obvious deformation in the middle to clamp and support the middle part of the wedge. Similarly, in order to further maintain the stability and synchronization of the four wedge positions, multiple wedge assembly components can be selected and set sequentially along the axial direction of the wedges according to the assembly accuracy requirements. By using multiple wedge assembly components to support the four wedges in segments, the synchronization of the four wedges in the assembly process can be greatly improved, thereby improving the assembly efficiency of the four wedges.

[0049] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A wedge assembly tool, characterized in that, The device includes a clamping assembly (2) and a center block (1). The clamping assembly (2) is respectively provided on the first side (11), the second side (12) and the third side (13) of the center block (1). The first side (11) and the second side (12) are arranged opposite to each other. The third side (13) is located between the first side (11) and the second side (12). The first side (11) is parallel to the second side (12). The third side (13) is perpendicular to the first side (11). Two adjacent clamping assemblies (2) are connected by a chamfer. The clamping assembly (2) is used to clamp the wedges of the four wedge assemblies (3).

2. The wedge assembly tool according to claim 1, characterized in that, The clamping assembly (2) includes a first jaw (21) and a second jaw (22). The first jaw (21) includes a first base plate (211), and a first side plate (212) extends from one end of the first base plate (211) in a direction perpendicular to the first base plate (211). The second jaw (22) includes a second base plate (221), and a second side plate (222) extends from one end of the second base plate (221) in a direction perpendicular to the second base plate (221). The end of the first base plate (211) away from the first side plate (212) is connected to the second base plate (221). The first side plate (212) is connected to the end away from the second side plate (222). The end of the first side plate (212) away from the first bottom plate (211) extends outward with a first protrusion (213) in the direction toward the second side plate (222). The end of the second side plate (222) away from the second bottom plate (221) extends outward with a second protrusion (223) in the direction toward the first side plate (212). The connection between the first bottom plate (211) and the first side plate (212) is provided with an outer chamfer. The connection between the second bottom plate (221) and the second side plate (222) is provided with an outer chamfer.

3. The wedge assembly tool according to claim 2, characterized in that, It also includes a connecting bolt. The outer chamfer of the first claw (21) has a connecting through hole (214) facing the direction close to the second base plate (221). A connecting thread blind hole with a position matching the connecting through hole (214) is provided at the connection end between the second base plate (221) and the first base plate (211). The connecting bolt passes through the connecting through hole (214) and is threadedly connected to the connecting thread blind hole.

4. The wedge assembly tool according to claim 2, characterized in that, It also includes a first fixing bolt, which passes through the second base plate (221) disposed on the first side (11) and is threadedly connected to the center block (1).

5. The wedge assembly tool according to claim 4, characterized in that, A first fixed thread blind hole (14) is provided on the first side (11). The first fixing bolt passes through the second base plate (221) on the first side (11) and is threadedly connected to the first fixed thread blind hole (14).

6. The wedge assembly tool according to claim 2, characterized in that, It also includes a second fixing bolt, which passes through the second base plate (221) disposed on the second side (12) and is threadedly connected to the center block (1).

7. The wedge assembly tool according to claim 6, characterized in that, A second fixed thread blind hole (15) is provided on the second side (12). The second fixing bolt passes through the second base plate (221) on the second side (12) and is threadedly connected to the second fixed thread blind hole (15).

8. The wedge assembly tool according to claim 2, characterized in that, It also includes a third fixing bolt, which passes through the second base plate (221) disposed on the third side (13) and is threadedly connected to the center block (1).

9. The wedge assembly tool according to claim 8, characterized in that, A third fixed thread blind hole (16) is provided on the third side surface (13). The third fixed bolt passes through the second base plate (221) on the third side surface (13) and is threadedly connected to the third fixed thread blind hole (16).

10. A positioning device, characterized in that, Includes at least two wedge assembly tools as described in any one of claims 1-9, the wedge assembly tools being used to sequentially arrange the four wedge assemblies (3) along their axial direction.

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