puller

Abstract

The application provides a puller, and relates to a pulling tool; wherein the puller comprises a ring-shaped sleeve, a clamping piece, a puller seat, a guide rod and an impact piece; the ring-shaped sleeve is provided with at least one opening; the opening extends to both ends of the ring-shaped sleeve to communicate the inner cavity of the ring-shaped sleeve with the external environment; the clamping piece is arranged on the ring-shaped sleeve; the opening is reduced in width by rotating the clamping piece; the puller seat is arranged at one end of the ring-shaped sleeve; the guide rod is detachably connected with the puller seat; the guide rod is provided with an impact part; and the impact piece is sleeved on the guide rod and slides and impacts towards the impact part. The application realizes the disassembly of thin-walled sleeve parts and reduces the disassembly cost.

Description

Technical Field

[0001] This application relates to the field of traction tools, and more specifically, to a puller. Background Technology

[0002] For disassembling thin-walled sleeve parts with interference or transition fits, a resistance wire heating process is typically used. This involves heating a resistance wire to cause the sleeve to expand, thus achieving disassembly. This process requires the use of custom-made resistance wire and strict control of various process parameters during heating. It is important to note that this method can cause irreversible damage to the internal parts. Furthermore, this process requires significant investment in tooling design, making it only suitable for large-scale mass production scenarios, and not economically viable for small-batch production or after-sales maintenance. Utility Model Content

[0003] The purpose of this application is to provide a puller that can disassemble thin-walled sleeve-type parts and reduce disassembly costs.

[0004] In a first aspect, this utility model provides a puller, which includes an annular sleeve, a clamping member, a puller seat, a guide rod, and an impact member. The annular sleeve has at least one opening, which extends to both ends of the annular sleeve to communicate the inner cavity of the annular sleeve with the external environment. The clamping member is mounted on the annular sleeve. Rotating the clamping member reduces the width of the opening. The puller seat is mounted on one end of the annular sleeve. The guide rod is detachably connected to the puller seat, and the guide rod has an impact portion. The impact member is sleeved on the guide rod and slides towards the impact portion to impact.

[0005] In an optional embodiment, the annular sleeve is provided with mounting blocks, the mounting blocks are located on the outer wall of the annular sleeve, and the mounting blocks are arranged in pairs on both sides of the opening, and the clamping member passes through the mounting blocks.

[0006] In an optional implementation, the number of mounting blocks is multiple pairs, and the number of clamping members is the same as the number of pairs of mounting blocks and corresponds one-to-one.

[0007] In an optional embodiment, the annular sleeve is further provided with a connecting block, and the pull-out seat is fixedly connected to the connecting block.

[0008] In an optional embodiment, the connecting blocks are arranged in pairs at the ends of the annular sleeve, the pull-out seat is a plate-shaped structure, and the two ends of the pull-out seat are respectively fixedly connected to the connecting frame.

[0009] In an optional embodiment, the connecting block is located on the outer wall of the annular sleeve.

[0010] In an optional implementation, the width of the opening is a fixed value.

[0011] In an optional embodiment, the guide rod is threadedly connected to the puller seat.

[0012] In an optional embodiment, one end of the guide rod is provided with an external thread, and the other end of the guide rod is provided with the impact portion.

[0013] In an optional embodiment, the cross-section of the guide rod is circular, square, or rhomboid, and the shape of the impact member is adapted to the shape of the guide rod.

[0014] Compared to existing technologies, the beneficial effects of this application are: This application achieves clamping of thin-walled sleeve-type parts through the cooperation of annular sleeve and clamping member, and then uses an impact member to impact the impact part to drive the kit to detach from the parts inside the sleeve, thereby realizing the disassembly of thin-walled sleeve-type parts and reducing disassembly costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 The diagrams show the disassembly and connection of the puller and the thin-walled sleeve-like parts in some embodiments; Figure 2 Cross-sectional schematic diagrams of pullers and thin-walled sleeve-type parts in some embodiments are shown; Figure 3 A three-dimensional structural schematic diagram of the puller is shown in some embodiments; Figure 4 A schematic diagram of the connection between the annular sleeve and the clamping member is shown in some embodiments.

[0017] Explanation of key component symbols: 100-Annular sleeve; 110-Opening; 120-Mounting block; 130-Connecting block; 200-Clamping element; 300-Pull-out seat; 400-Guide rod; 410-Impact part; 500-Impact element; 10-Kit; 20-Inner parts of the sleeve. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly 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 application according to the specific circumstances.

[0022] In this application, unless otherwise expressly 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," "on top of," and "over" 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.

[0023] Please see Figure 1 and Figure 2This embodiment is applicable to the disassembly of thin-walled sleeve-type parts, which include a slightly interference or transition fit kit 10 and an inner part 20. Taking a bushing and a shaft as examples, the inner part 20 is cylindrical.

[0024] In some other embodiments, the inner part 20 may also be conical.

[0025] Please see Figure 3 and Figure 4 This embodiment provides a puller, including an annular sleeve 100, a clamping member 200, a puller seat 300, a guide rod 400, and an impact member 500.

[0026] The inner wall dimensions of the annular sleeve 100 match the outer wall dimensions of the thin-walled sleeve-type parts to facilitate subsequent clamping.

[0027] The annular sleeve 100 is provided with at least one opening 110, which extends to both ends of the annular sleeve 100 to connect the inner cavity of the annular sleeve 100 with the external environment. In this embodiment, the opening 110 is slit-shaped to provide compensation space for subsequent clamping.

[0028] In some embodiments, the width of the opening 110 is a fixed value, and the width of the opening 110 at one end of the annular sleeve 100 is the same as the width of the opening 110 at the other end of the annular sleeve 100.

[0029] The clamping member 200 is mounted on the annular sleeve 100. Specifically, the annular sleeve 100 is provided with a mounting block 120. The mounting block 120 is located on the outer wall of the annular sleeve 100, and the mounting blocks 120 are arranged in pairs on both sides of the opening 110. The clamping member 200 passes through the mounting block 120.

[0030] The number of mounting blocks 120 is multiple pairs, and the number of clamping members 200 is the same as the number of pairs of mounting blocks 120 and corresponds one-to-one.

[0031] Rotating the clamping member 200 reduces the width of the opening 110. In this embodiment, the clamping member 200 can be a bolt and a nut, with the bolt passing through the mounting hole and the nut tightened on the bolt.

[0032] The pull-out seat 300 is installed at one end of the annular sleeve 100, and the annular sleeve 100 is also provided with a connecting block 130, which is located on the outer wall of the annular sleeve 100.

[0033] The pull-out seat 300 is fixedly connected to the connecting block 130.

[0034] The connecting blocks 130 are arranged in pairs at the ends of the annular sleeve 100, the pull seat 300 is a plate-shaped structure, and the two ends of the pull seat 300 are respectively fixedly connected to the connecting frame.

[0035] The guide rod 400 is detachably connected to the pull-out seat 300, and the guide rod 400 is threadedly connected to the pull-out seat 300. One end of the guide rod 400 is provided with an external thread, and the other end of the guide rod 400 is provided with an impact part 410, the cross-sectional area of ​​the impact part 410 being larger than the cross-sectional area of ​​the rod part of the guide rod 400.

[0036] The impact member 500 is sleeved on the guide rod 400 and slides towards the impact part 410 to impact. The cross-section of the guide rod 400 is circular, square, or rhomboid, and the shape of the impact member 500 is adapted to the shape of the guide rod 400.

[0037] Please see Figures 1 to 3 Based on the above, this embodiment further explains the working principle of the puller as follows: S100. Assemble the annular sleeve 100 onto the thin-walled sleeve-type part, and then lock the clamping member 200 to clamp the thin-walled sleeve-type part.

[0038] S200. Install the pull-out seat 300 onto the connecting block 130.

[0039] S300. Insert the impact member 500 into the guide rod 400 from the end with the external thread, and then thread the guide rod 400 to the puller seat 300 to fix it.

[0040] S400. Push the impact member 500 to slide and impact the impact part 410, and the resulting impact force causes the kit 10 to disengage from the inner part 20.

[0041] In this embodiment, the thin-walled sleeve-type parts are clamped by the cooperation of the annular sleeve 100 and the clamping member 200. Then, the impact member 500 impacts the impact part 410 to drive the kit 10 to detach from the inner part 20, thereby realizing the disassembly of the thin-walled sleeve-type parts and reducing the disassembly cost.

[0042] The disassembly method used in this embodiment will not damage thin-walled sleeve parts, has a wide range of applications, and is especially suitable for small-batch production and after-sales maintenance.

[0043] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0044] Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0045] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A puller, characterized in that, The device includes an annular sleeve, a clamping element, a pull-out seat, a guide rod, and an impact element. The annular sleeve has at least one opening extending to both ends of the annular sleeve to connect the inner cavity of the annular sleeve with the external environment. The clamping element is mounted on the annular sleeve, and rotating the clamping element reduces the width of the opening. The pull-out seat is mounted on one end of the annular sleeve. The guide rod is detachably connected to the pull-out seat, and the guide rod has an impact portion. The impact element is sleeved on the guide rod and slides towards the impact portion to impact.

2. The puller as described in claim 1, characterized in that, The annular sleeve is provided with mounting blocks, which are located on the outer wall of the annular sleeve. The mounting blocks are arranged in pairs on both sides of the opening, and the clamping member passes through the mounting blocks.

3. The puller as described in claim 2, characterized in that, The number of mounting blocks is multiple pairs, and the number of clamping members is the same as the number of pairs of mounting blocks and corresponds one-to-one.

4. The puller as described in any one of claims 1 to 3, characterized in that, The annular sleeve is also provided with a connecting block, and the pull-out seat is fixedly connected to the connecting block.

5. The puller as described in claim 4, characterized in that, The connecting blocks are arranged in pairs at the ends of the annular sleeve, the pull seat is a plate-shaped structure, and the two ends of the pull seat are respectively fixedly connected to the connecting frame.

6. The puller as described in claim 5, characterized in that, The connecting block is located on the outer wall of the annular sleeve.

7. The puller as described in any one of claims 1 to 3, characterized in that, The width of the opening is a fixed value.

8. The puller as described in any one of claims 1 to 3, characterized in that, The guide rod is threadedly connected to the pull-out seat.

9. The puller as described in claim 8, characterized in that, One end of the guide rod is provided with an external thread, and the other end of the guide rod is provided with the impact part.

10. The puller as described in claim 8, characterized in that, The cross-section of the guide rod is circular, square, or rhomboid, and the shape of the impact member is adapted to the shape of the guide rod.

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