A multi-functional puller device

Abstract

This utility model discloses a multifunctional puller device, including a base. A spiral top rod is threaded through the center of the base. Multiple claw seats are provided around the periphery of the base, and a pull claw is installed on the inner side of each claw seat. A pull hook is provided at the bottom end of each pull claw. A claw position limiting plate is fitted to the top of the base. An elastic stop plate is provided around the periphery of the claw position limiting plate. A stop tooth is integrally formed at the bottom end of the elastic stop plate. The top end of the pull claw has an arc-shaped structure, and the surface of the arc-shaped structure is evenly provided with positioning tooth grooves. Through the meshing structure of the stop tooth of the elastic stop plate and the positioning tooth groove of the pull claw, the angle of the pull claw can be flexibly adjusted and reliably limited. It is suitable for parts of different sizes or shapes to be disassembled, taking into account both ease of operation and pulling stability, and solving the problem of difficulty in balancing adjustment and limiting in traditional devices.

Description

Technical Field

[0001] This utility model relates to the field of maintenance tool technology, and in particular to a multifunctional puller device. Background Technology

[0002] Existing puller devices are commonly used tools for disassembling bearings, gears and other parts. They typically consist of a base, a push rod and a pull claw. The parts are separated through the synergistic action of the push rod pushing and the pull claw pulling.

[0003] However, existing devices have obvious limitations in practical use: on the one hand, it is difficult to balance the adjustment of the claw angle and the limiting position. Either after adjustment, there is a lack of reliable limiting position, which can easily lead to unexpected rotation and unstable pulling when subjected to force, or the limiting structure is rigid and cannot flexibly adapt to parts of different sizes, resulting in poor adjustment convenience. On the other hand, the connection between the claw and the claw base is mostly a fixed or complex disassembly and assembly structure. Not only is the edge disassembly and assembly operation cumbersome, but it also usually only supports unidirectional installation and cannot achieve forward and reverse installation switching. It is difficult to meet the needs of special scenarios such as inner ring pulling of parts, and the scope of application is limited.

[0004] Therefore, those skilled in the art have provided a multifunctional puller device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multifunctional puller device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multifunctional puller device includes a base, a spiral top rod threaded through the center of the base, multiple claw seats around the periphery of the base, a pull claw installed on the inner side of each claw seat, and the top of the pull claw rotatably connected to the claw seat. The bottom end of the pull claw is provided with a hook. A claw position limiting plate is fitted to the top of the base. Elastic stop plates are provided around the periphery of the claw position limiting plate corresponding to the upper position of each claw seat. The bottom end of the elastic stop plate is integrally formed with a stop tooth. The top end of the pull claw has an arc-shaped structure, and the surface of the arc-shaped structure is uniformly provided with positioning tooth grooves. The stop teeth at the bottom end of the elastic stop plate can engage with the positioning tooth grooves.

[0008] Preferably, rotating holes are provided on both sides of the claw seat, and an opening extending to the outside of the claw seat is provided on the side of the rotating hole facing the end of the claw seat, and the size of the opening is smaller than the diameter of the rotating hole;

[0009] Both sides of the claw are fixed with a rotating shaft, and both ends of the rotating shaft are flattened to make its cross-section a flat round structure. The rotating shaft is rotatably connected to the rotating hole on the claw seat.

[0010] Preferably, the periphery of the claw position limiting disc is provided with an extension corresponding to each claw seat. The end of the extension is integrally formed with an elastic stop piece, and the end of the extension has cuts on both sides of the elastic stop piece, so that a gap is formed between the elastic stop piece and the extension body.

[0011] Preferably, the claw position limiting plate has a through hole in the middle for the spiral push rod to pass through, and the claw position limiting plate is fixedly connected to the base by a fixing screw.

[0012] Preferably, a drive column is fixedly connected to the top end of the spiral push rod, and a push plate is fixedly connected to the bottom end. A positioning cone is integrally formed in the middle of the end face of the push plate opposite to the spiral push rod.

[0013] Preferably, there are four claw seats, two of which are symmetrically arranged along the same straight line, and the other two are symmetrically arranged with the straight line as the axis of symmetry, and the angle between the other two claw seats and one of the claw seats arranged in the straight line is 120 degrees.

[0014] Preferably, the base, spiral push rod, pull claw, and claw position limiting plate are all made of high-strength chromium-molybdenum steel, and their surfaces are all coated with manganese phosphate coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The engagement structure between the stop teeth of the elastic stop plate and the positioning groove of the pull claw enables flexible adjustment and reliable limiting of the pull claw angle, balancing ease of operation and pulling stability, and solving the problem of difficulty in balancing adjustment and limiting in traditional devices. The opening of the claw seat rotating hole matches the flat round rotating shaft of the pull claw, which facilitates quick assembly and disassembly of the pull claw and supports forward and reverse installation to adapt to inner ring pulling, expanding the applicable scenarios. The symmetrical layout of the four-claw seat can be combined into a two-claw or three-claw structure to adapt to parts of different shapes such as long strips and circles, improving the versatility of the device. At the same time, the entire device is made of high-strength chromium-molybdenum steel and coated with manganese phosphate coating, which enhances the structural strength and corrosion resistance of the device and extends its service life. Attached Figure Description

[0017] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the puller device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the mounting structure of the push plate proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the pull claw structure proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the elastic stop plate structure proposed in this utility model.

[0022] In the diagram: 1. Base; 11. Claw seat; 12. Rotary hole; 2. Spiral push rod; 21. Drive column; 22. Push plate; 3. Pull claw; 31. Pull hook; 32. Positioning tooth groove; 33. Rotary shaft; 4. Claw position limiting plate; 41. Elastic stop plate; 42. Stop tooth; 5. Fixing screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4 A multifunctional puller device includes a base 1, a spiral top rod 2 threaded through the middle of the base 1, multiple claw seats 11 around the periphery of the base 1, a pull claw 3 installed on the inner side of each claw seat 11, and the top of the pull claw 3 rotatably connected to the claw seat 11. A pull hook 31 is provided at the bottom end of the pull claw 3. A claw position limiting plate 4 is fitted to the top of the base 1. An elastic stop plate 41 is provided around the periphery of the claw position limiting plate 4 corresponding to the position above each claw seat 11. A stop tooth 42 is integrally formed at the bottom end of the elastic stop plate 41. The top end of the pull claw 3 has an arc-shaped structure, and the surface of the arc-shaped structure is evenly provided with positioning tooth grooves 32. The stop tooth 42 at the bottom end of the elastic stop plate 41 can engage with the positioning tooth grooves 32.

[0025] By adopting the above technical solution, the engagement of the stop teeth 42 of the elastic stop plate 41 with the positioning tooth groove 32 of the pull claw 3 utilizes the elastic force of the elastic stop plate 41 to form a stable limiting effect, which can effectively limit the unexpected rotation of the pull claw 3 caused by force during the pulling operation; at the same time, when the angle of the pull claw 3 is actively adjusted, the stop teeth 42 can overcome the elastic force and disengage from the positioning tooth groove 32, realizing the flexible adjustment of the angle of the pull claw 3, thereby adapting to parts of different sizes or shapes to be disassembled, taking into account both the stability of the pulling process and the convenience of operation and adjustment.

[0026] Both sides of the claw seat 11 are provided with rotating holes 12. The rotating hole 12 has an opening extending to the outside of the claw seat 11 on the side facing the end of the claw seat 11, and the size of the opening is smaller than the diameter of the rotating hole 12.

[0027] Both sides of the pull claw 3 are fixed with a rotating shaft 33, and both ends of the rotating shaft 33 are flattened to make its cross-section a flat round structure. The rotating shaft 33 is rotatably connected to the rotating hole 12 on the claw seat 11.

[0028] Using the above technical solution, the opening of the rotating hole 12 of the claw seat 11 is matched with the rotating shaft 33 of the flat circular cross section of the pull claw 3. When the flat part of the rotating shaft 33 is parallel to the direction of the opening, the pull claw 3 can be easily disassembled and assembled through the opening. This not only makes the operation convenient, but also supports the reverse installation of the pull claw 3, so that the hook 31 faces outward. This allows for pulling operations from the inner circle of the part when needed, expanding the applicable scenarios of the device. When the flat part of the rotating shaft 33 is not parallel to the direction of the opening, because the width of the flat part is greater than the size of the opening, it cannot be pulled out from the opening even if force is applied. This effectively prevents the pull claw 3 from detaching from the claw seat 11 during the pulling process, ensuring operational stability and taking into account the flexibility of disassembly and assembly, the expandability of the application scenarios, and the reliability of the force applied.

[0029] The periphery of the claw position limiting plate 4 is provided with an extension corresponding to each claw seat 11. The end of the extension is integrally formed with an elastic stop plate 41, and the end of the extension has cuts on both sides of the elastic stop plate 41, so that a gap is formed between the elastic stop plate 41 and the extension body.

[0030] Using the above technical solution, the elastic stop plate 41 integrally formed at the end of the extension of the claw position limiting plate 4 has gaps formed on both sides through cuts, which can avoid frictional interference between the elastic stop plate 41 and the extension body during elastic deformation, and ensure smooth engagement or disengagement of the stop tooth 42 and the positioning tooth groove 32; at the same time, the integrally formed structure ensures the structural strength of the elastic stop plate 41, making it less prone to breakage during repeated deformation, and improving the reliability and durability of the limiting function.

[0031] The claw position limiting plate 4 has a through hole in the middle for the spiral push rod 2 to pass through, and the claw position limiting plate 4 is fixedly connected to the base 1 by a fixing screw 5.

[0032] Using the above technical solution, the through hole in the middle of the claw position limiting plate 4 provides movement space for the spiral top rod 2, and the fixed screw 5 enables a detachable connection with the base 1.

[0033] The top end of the spiral push rod 2 is fixedly connected to a drive column 21, and the bottom end is fixedly connected to a push plate 22. The push plate 22 has a positioning cone integrally formed in the middle of the end face away from the spiral push rod 2.

[0034] Using the above technical solution, the drive column 21 at the top of the spiral push rod 2 can easily apply torque with the help of tools to drive the spiral push rod 2 to rotate; the bottom push plate 22 is matched with the positioning cone, wherein the contact area between the positioning cone and the part to be disassembled is small, which can significantly reduce the frictional resistance when the spiral push rod 2 rotates, making the pushing process smoother and less labor-intensive.

[0035] There are four claw seats 11, two of which are arranged symmetrically along the same straight line, and the other two are arranged symmetrically with the straight line as the axis of symmetry. The angle between the other two claw seats 11 and one of the claw seats 11 arranged in the straight line is 120 degrees.

[0036] By adopting the above technical solution, the layout design of the four claw seats 11 allows for flexible selection of the installation method of the pull claw 3. When two claw seats 11 are installed in a straight line and are symmetrical, a two-claw structure is formed, which is suitable for long and narrow parts. When three claw seats 11 are installed at a 120-degree angle, a three-claw structure is formed, which is suitable for round, polygonal and other parts. By changing the number of claws and the layout, the device's adaptability to parts of different shapes is greatly expanded.

[0037] The base 1, spiral push rod 2, pull claw 3 and claw position limiting plate 4 are all made of high-strength chromium-molybdenum steel and are all coated with manganese phosphate coating.

[0038] By adopting the above technical solutions, the device uses high-strength chromium-molybdenum steel, which can withstand the large load force during the pulling and pushing process, avoiding deformation or breakage due to excessive force, and ensuring the structural stability of the device under high-intensity operation; the surface coating of manganese phosphate can enhance the wear resistance and corrosion resistance of the components, enabling the device to work stably in harsh environments such as oil and moisture, and effectively extending its service life.

[0039] Working principle:

[0040] When using it, first adjust the angle of the pull claw 3 according to the size and shape of the part to be disassembled, so that the hook 31 at the bottom of the pull claw 3 hooks the part; if it is necessary to pull from the inner ring, the pull claw 3 can be reversed; then, with the help of a tool, rotate the spiral push rod 2 through the drive column 21. The spiral push rod 2 moves forward along the thread of the base 1, and the positioning cone of the push plate 22 at its bottom end presses against the part. With the pulling force of the pull claw 3, the part is pulled out smoothly.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-functional horse device comprising a base (1), characterized in that, A spiral top rod (2) is threaded through the middle of the base (1). Multiple claw seats (11) are provided around the base (1). Each claw seat (11) has a pull claw (3) installed on its inner side. The top of the pull claw (3) is rotatably connected to the claw seat (11). The bottom of the pull claw (3) is provided with a hook (31). A claw position limiting plate (4) is fitted to the top of the base (1). An elastic stop plate (41) is provided around the claw position limiting plate (4) at the position above each claw seat (11). The bottom of the elastic stop plate (41) is integrally formed with a stop tooth (42). The top of the pull claw (3) is an arc-shaped structure. The surface of the arc-shaped structure is uniformly provided with positioning tooth grooves (32). The stop tooth (42) at the bottom of the elastic stop plate (41) can mesh with the positioning tooth groove (32).

2. A multi-functional puller device according to claim 1, wherein Both sides of the claw seat (11) are provided with rotating holes (12). The rotating holes (12) have an opening extending to the outside of the claw seat (11) on the side facing the end of the claw seat (11), and the size of the opening is smaller than the diameter of the rotating holes (12). Both sides of the claw (3) are fixed with a rotating shaft (33), and both ends of the rotating shaft (33) are flattened to make its cross-section a flat round structure. The rotating shaft (33) is rotatably connected to the rotating hole (12) on the claw seat (11).

3. The multi-functional puller apparatus of claim 1, wherein, The periphery of the claw position limiting plate (4) is provided with an extension corresponding to each claw seat (11). The end of the extension is integrally formed with an elastic stop plate (41), and the end of the extension has cuts on both sides of the elastic stop plate (41) to form a gap between the elastic stop plate (41) and the extension body.

4. The multi-functional puller apparatus of claim 1, wherein, The claw position limiting plate (4) has a through hole in the middle for the spiral top rod (2) to pass through, and the claw position limiting plate (4) and the base (1) are fixedly connected by a fixing screw (5).

5. The multi-functional puller apparatus of claim 1, wherein, The top end of the spiral push rod (2) is fixed with a drive column (21), and the bottom end is fixed with a push plate (22). The push plate (22) has a positioning cone integrally formed in the middle of the end face away from the spiral push rod (2).

6. A multifunctional puller device according to claim 1, characterized in that, The claw seat (11) is provided in four parts, two of which are arranged symmetrically along the same straight line, and the other two are arranged symmetrically with the straight line as the axis of symmetry. The angle between the other two claw seats (11) and one of the claw seats (11) arranged in the straight line is 120 degrees.

7. The multi-functional puller apparatus of claim 1, wherein, The base (1), spiral top rod (2), pull claw (3) and claw position limiting plate (4) are all made of high-strength chromium-molybdenum steel and are coated with manganese phosphate coating.

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