A tool for disassembling and assembling the inner ring of an expansion sleeve.
By designing a tool for disassembling and assembling the inner ring of the expansion sleeve, and using wedge blocks to open the gap of the inner ring, the problems of high operational difficulty and damage in traditional methods are solved, achieving simple disassembly and assembly of the inner ring and wide applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional methods of disassembling and assembling the inner ring of the expansion sleeve are difficult and can easily damage the inner ring and shaft.
Design a tool for disassembling and assembling the inner ring of an expansion sleeve, including a first arc-shaped clamp, a second arc-shaped clamp, and a pushing component, which uses a wedge block to open the gap of the inner ring to achieve disassembly and assembly of the inner ring.
It simplifies the disassembly and assembly process of the inner ring, avoids damage to the inner ring and shaft, and has a wide range of applications.
Smart Images
Figure CN224445816U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical equipment assembly, and in particular to a tool for disassembling and assembling the inner ring of a shrink sleeve. Background Technology
[0002] An expansion sleeve is a connection device that uses the pressure and friction generated between the containing surfaces by tightening bolts to achieve load transfer. It is widely used in the connection of wheels and shafts.
[0003] The expansion sleeve consists of an inner ring, an outer ring, and a central expansion element. Because the inner ring has an axial gap, it contracts towards the gap, resulting in an inner ring radius smaller than the shaft radius. This makes disassembling and assembling the inner ring somewhat difficult.
[0004] Traditionally, the inner ring is disassembled and installed by inserting a wedge-shaped object, such as a flathead screwdriver, into the gap of the inner ring to widen its radius. Alternatively, it can be removed by tapping or pulling. These methods not only make it difficult to remove the inner ring but also easily damage both the inner ring and the shaft.
[0005] Therefore, a technical solution is needed to address the problem that the traditional method of inserting a screwdriver into the inner ring and removing it from the shaft by tapping or pulling is difficult and can easily damage both the inner ring and the shaft. Utility Model Content
[0006] The purpose of this utility model is to overcome the technical problem that the traditional method of inserting a screwdriver into the inner ring and removing the inner ring installed on the shaft by tapping or pulling is difficult to operate and can easily cause damage to the inner ring and the shaft. This utility model provides a tool for removing and installing the inner ring of the expansion sleeve.
[0007] This utility model provides a tool for disassembling and assembling an inner ring of an expansion sleeve, including a first arc-shaped clamp, a second arc-shaped clamp, and a pushing component. The first arc-shaped clamp and the second arc-shaped clamp are detachably connected and used to fix them to the outer circle of the inner ring. A wedge-shaped block is slidably provided on the first arc-shaped clamp. The pushing component abuts against the wedge-shaped block and is used to push the wedge-shaped block to move towards the second arc-shaped clamp.
[0008] This utility model discloses a tool for disassembling and assembling the inner ring of an expansion sleeve. In use, the first arc-shaped clamp and the second arc-shaped clamp are connected and fixed on the inner ring of the expansion sleeve. The pushing component on the first arc-shaped clamp pushes the wedge block towards the inner ring, causing the wedge block to push into the gap of the inner ring. As the pushing component further pushes the wedge block in, the gap of the inner ring is widened by the wedge block, thus facilitating the installation or removal of the inner ring, together with the first and second arc-shaped clamps, onto or from the shaft. The operation is simple and will not cause damage to the shaft or the inner ring.
[0009] Preferably, the first arc-shaped clamp is provided with connecting blocks on both sides, and the connecting blocks are provided with connecting holes. The second arc-shaped clamp is provided with mounting blocks on both sides, and the mounting blocks are provided with fastening screw holes. The connecting holes and the fastening screw holes are connected one-to-one by bolts.
[0010] It achieves a detachable connection between the first and second arc-shaped clamps, making installation and disassembly simple. Moreover, by replacing bolts of different lengths, it can be adapted to inner rings of different diameters, thus broadening its applicability.
[0011] Preferably, the first arc-shaped clamp has a mounting base on the side away from the second arc-shaped clamp, and the pushing component is connected to the mounting base.
[0012] By adding a mounting base to the first arc-shaped clamp, it is easier to support the pushing component and facilitate the pushing component to apply thrust to the wedge block with the help of the mounting base.
[0013] Preferably, the pushing assembly includes a screw, and the mounting base is provided with a limiting screw hole for mounting the screw, and one end of the screw is rotatably connected to the wedge block.
[0014] The screw and the mounting base are connected by a thread. During the axial movement of the screw, the mounting base can continuously provide support for the screw. The operator only needs to rotate the screw to push the wedge into place, which is simple and less strenuous.
[0015] Preferably, the end of the wedge block connected to the screw is provided with a connecting seat, the end of the connecting seat away from the wedge block is provided with a mounting hole, and the end of the screw close to the wedge block is provided with a connecting post adapted to the mounting hole.
[0016] This design achieves a rotatable connection between the wedge block and the screw. When the screw rotates, the screw and the wedge block can rotate relative to each other, thus avoiding damage to the inner ring gap caused by the rotation of the wedge block.
[0017] Preferably, a support rod is provided between the connecting post and the screw, the diameter of the support rod being smaller than the diameter of the connecting post, and an annular limiting block is provided at the mounting hole, the inner diameter of the annular limiting block being adapted to the support rod.
[0018] The annular limiting block restricts the connecting post within the mounting hole, thereby preventing the screw from disengaging from the connecting seat during use, while not affecting the relative rotation between the screw and the connecting seat.
[0019] Preferably, one end of the screw extends out of the mounting base, and a crank handle is provided at the end of the screw extending out of the mounting base.
[0020] It allows for easy rotation of the screw via a crank handle, making the screw rotation operation more labor-saving.
[0021] Preferably, the mounting base includes a support block, and connecting blocks are respectively provided at both ends of the support block. The support block is connected to the two connecting blocks to form an n-shape. The two connecting blocks are respectively connected to the first arc-shaped clamp, and the limiting screw hole is provided on the support block.
[0022] The mounting base supports the screw, and the support block is connected to the first arc-shaped clamp through two connecting blocks, forming a window between the support block and the first arc-shaped clamp to facilitate adjusting the orientation of the wedge block during the installation of the push-pull assembly.
[0023] Preferably, the first arc-shaped clamp is provided with a guide groove for installing the connecting seat, and the cross-section of the guide groove is set as a polygon.
[0024] The polygonal guide groove serves to guide and restrict rotation of the connecting seat. The guiding function means that the guide groove can limit the position of the connecting seat, so that the position of the wedge block does not change during the insertion process, while improving the overall structural strength of the connecting seat and the wedge block. The rotation restriction means that when both the connecting seat and the guide groove have polygonal cross-sections, the connecting seat will not rotate within the guide groove, thereby avoiding damage to both sides of the inner ring gap during disassembly and assembly.
[0025] Preferably, the projection of the guide groove on the support block is located within the limiting screw hole.
[0026] The annular limiting block of the connecting seat requires the connecting post at the end of the screw to enter the mounting hole of the connecting seat before welding. Therefore, it is necessary to pre-assemble the pushing component and the wedge block. The guide groove is set smaller than the limiting screw hole so that the projection of the guide groove can fall into the limiting screw hole. This allows the connecting seat that matches the guide groove to pass through the limiting screw hole after it is assembled with the pushing component and then installed into the guide groove, making tool assembly simpler.
[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0028] This utility model provides a tool for disassembling and assembling the inner ring of an expansion sleeve. By clamping the first arc-shaped clamp and the second arc-shaped clamp onto the inner ring of the expansion sleeve, the tool and the inner ring are relatively fixed. The wedge block is pushed by the pushing component on the first arc-shaped clamp to open the gap on the inner ring, thereby facilitating the installation or removal of the inner ring together with the first arc-shaped clamp and the second arc-shaped clamp onto the shaft. The operation is simple and will not cause damage to the shaft or the inner ring. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of a tool for disassembling and assembling the inner ring of an expansion sleeve according to this utility model;
[0030] Figure 2This is a schematic diagram of the structure of the first arc-shaped clamp of this utility model;
[0031] Figure 3 This is a schematic diagram of the structure of the second arc-shaped clamp of this utility model;
[0032] Figure 4 This is a schematic diagram showing the connection between the wedge block and the screw of this utility model;
[0033] Figure 5 This is a diagram illustrating the usage of a tool for disassembling and assembling the inner ring of an expansion sleeve according to this utility model.
[0034] Marked in the image:
[0035] 1-First arc-shaped clamp, 11-Connecting block, 111-Connecting hole, 12-Mounting seat, 121-Supporting block, 1211-Limiting screw hole, 122-Connecting block, 13-Guide groove, 2-Second arc-shaped clamp, 21-Mounting block, 211-Fasting screw hole, 3-Pushing assembly, 31-Screw, 311-Connecting column, 312-Supporting rod, 32-Handle, 4-Wedge block, 41-Connecting seat, 411-Mounting hole, 412-Annular limiting block, 5-Bolt, 6-Inner ring, 61-Gap. Detailed Implementation
[0036] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0037] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.
[0038] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.
[0039] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0040] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.
[0041] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0042] Example 1
[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a tool for disassembling and assembling an inner ring of an expansion sleeve includes a first arc-shaped clamp 1, a second arc-shaped clamp 2, and a pushing component 3. The first arc-shaped clamp 1 and the second arc-shaped clamp 2 are detachably connected and used to fix them to the outer circle of the inner ring 6. A wedge-shaped block 4 is slidably provided on the first arc-shaped clamp 1. The pushing component 3 abuts against the wedge-shaped block 4 and is used to push the wedge-shaped block 4 toward the second arc-shaped clamp 2.
[0044] In use, the first arc-shaped clamp 1 and the second arc-shaped clamp 2 are connected and fixed on the inner ring 6 of the expansion sleeve. The wedge block 4 is pushed towards the inner ring 6 by the pushing component 3 on the first arc-shaped clamp 1, so that the wedge block 4 is pushed into the gap 61 of the inner ring 6. As the pushing component 3 further pushes the wedge block 4 in, the gap 61 of the inner ring 6 is widened by the wedge block 4, which makes it easy to install or remove the inner ring 6 together with the first arc-shaped clamp 1 and the second arc-shaped clamp 2 onto the shaft. The operation is simple and will not cause damage to the shaft or the inner ring 6.
[0045] Specifically, the first arc-shaped clamp 1 has connecting blocks 11 on both sides, and the connecting blocks 11 have connecting holes 111. The second arc-shaped clamp 2 has mounting blocks 21 on both sides, and the mounting blocks 21 have fastening screw holes 211. The connecting holes 111 and the fastening screw holes 211 are connected one-to-one by bolts 5, realizing the detachable connection between the first arc-shaped clamp 1 and the second arc-shaped clamp 2. It is easy to install and disassemble. Moreover, by changing the bolts 5 of different lengths, it can also be adapted to inner rings 6 of different diameters, making it more widely applicable.
[0046] First arc-shaped clamp 1: A mounting base 12 is provided, including a support block 121. Each end of the support block 121 is provided with a connecting block 11. The support block 121 is connected to the two connecting blocks 11 to form an n-shape. The two connecting blocks 11 are respectively connected to the first arc-shaped clamp 1. A limiting screw hole 1211 is provided on the support block 121.
[0047] Pushing assembly 3 includes a screw 31, which is adapted to the limiting screw hole 1211 on the support block 121. One end of the screw 31 is rotatably connected to the wedge block 4. The screw 31 is threadedly connected to the mounting base 12. During the axial movement of the screw 31, the mounting base 12 can continuously provide support for the screw 31. The operator only needs to rotate the screw 31 to push the wedge block 4 in, which is simple and less strenuous. One end of the screw 31 extends out of the mounting base 12, and a crank 32 is provided at the end of the screw 31 extending out of the mounting base 12. The crank 32 is used to drive the screw 31 to rotate, making the rotation of the screw 31 less strenuous.
[0048] Wedge block 4: A connecting seat 41 is provided at one end of the wedge block 4. A guide groove 13 for mounting the connecting seat 41 is provided on the first arc-shaped clamp 1. The connecting seat 41 abuts against the end of the screw 31. During the axial movement of the screw 31, the wedge block 4 can be driven to move towards the inner ring 6.
[0049] Example 2
[0050] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the difference from embodiment 1 is that the wedge block 4 is provided with a connecting seat 41 at one end connected to the screw 31, and the connecting seat 41 is provided with a mounting hole 411 at the end away from the wedge block 4. The screw 31 is provided with a connecting post 311 adapted to the mounting hole 411 at the end near the wedge block 4.
[0051] In this embodiment, when the screw 31 rotates, the screw 31 and the wedge block 4 can rotate relative to each other, thereby avoiding the problem of damage to the gap 61 of the inner ring 6 caused by the rotation of the wedge block 4.
[0052] Furthermore, a support rod 312 is provided between the connecting post 311 and the screw 31. The diameter of the support rod 312 is smaller than the diameter of the connecting post 311. An annular limiting block 412 is provided at the opening of the mounting hole 411. The inner diameter of the annular limiting block 412 is adapted to the support rod 312. The annular limiting block 412 restricts the connecting post 311 within the mounting hole 411, thereby preventing the screw 31 from disengaging from the connecting seat 41 during use, while not affecting the relative rotation between the screw 31 and the connecting seat 41.
[0053] Example 3
[0054] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the difference from embodiment 2 is that the cross-section of the guide groove 13 is set as a polygon, wherein the polygon is a non-circular shape such as a triangle, quadrilateral, or pentagon.
[0055] In this embodiment, the polygonal guide groove 13 serves to guide and restrict the rotation of the connecting seat 41. The guiding function means that the guide groove 13 can limit the position of the connecting seat 41, so that the position of the wedge block 4 does not change during the insertion process, while improving the overall structural strength of the connecting seat 41 and the wedge block 4. The rotation restriction means that when both the connecting seat 41 and the guide groove 13 have polygonal cross-sections, the connecting seat 41 will not rotate within the guide groove 13, thereby avoiding damage to both sides of the gap 61 of the inner ring 6 during disassembly and assembly.
[0056] Furthermore, the projection of the guide groove 13 on the support block 121 is located within the limiting screw hole 1211. The annular limiting block 412 of the connecting seat 41 requires the connecting post 311 at the end of the screw 31 to enter the mounting hole 411 of the connecting seat 41 before welding. Therefore, it is necessary to pre-assemble the pushing component 3 and the wedge block 4. In this embodiment, the guide groove 13 is set smaller than the limiting screw hole 1211 so that the projection of the guide groove 13 can fall into the limiting screw hole 1211. This allows the connecting seat 41, which is adapted to the guide groove 13, to pass through the limiting screw hole 1211 after being assembled with the pushing component 3, and then be installed in the guide groove 13, making tool assembly simpler.
[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A ring dismounting tool for an inflated sleeve, characterized in that, It includes a first arc-shaped clamp (1), a second arc-shaped clamp (2), and a pushing component (3). The first arc-shaped clamp (1) and the second arc-shaped clamp (2) are detachably connected and used to fix to the outer circle of the inner ring (6). A wedge block (4) is slidably provided on the first arc-shaped clamp (1). The pushing component (3) abuts against the wedge block (4). The pushing component (3) is used to push the wedge block (4) to move towards the second arc-shaped clamp (2).
2. A tool according to claim 1, wherein, The first arc-shaped clamp (1) has connecting blocks (11) on both sides, and connecting holes (111) are provided on the connecting blocks (111). The second arc-shaped clamp (2) has mounting blocks (21) on both sides, and fastening screw holes (211) are provided on the mounting blocks (21). The connecting holes (111) and the fastening screw holes (211) are connected one-to-one by bolts (5).
3. A tool according to claim 1, wherein, The first arc-shaped clamp (1) has a mounting base (12) on the side away from the second arc-shaped clamp (2), and the pushing component (3) is connected to the mounting base (12).
4. A tool according to claim 3, wherein, The pushing component (3) includes a screw (31), and the mounting base (12) is provided with a limiting screw hole (1211) for mounting the screw (31). One end of the screw (31) is rotatably connected to the wedge block (4).
5. A tool according to claim 4, wherein, The wedge block (4) is connected to the screw (31) at one end with a connecting seat (41). The connecting seat (41) is provided with a mounting hole (411) at the end away from the wedge block (4). The screw (31) is provided with a connecting post (311) that is adapted to the mounting hole (411) at the end near the wedge block (4).
6. A tool according to claim 5, wherein, A support rod (312) is provided between the connecting column (311) and the screw (31). The diameter of the support rod (312) is smaller than the diameter of the connecting column (311). An annular limiting block (412) is provided at the opening of the mounting hole (411). The inner diameter of the annular limiting block (412) is adapted to the support rod (312).
7. A tool according to claim 4, wherein, One end of the screw (31) extends out of the mounting base (12), and a crank (32) is provided at the end of the screw (31) extending out of the mounting base (12).
8. A tool according to claim 4, wherein, The mounting base (12) includes a support block (121), and connecting blocks (11) are provided at both ends of the support block (121). The support block (121) is connected to the two connecting blocks (11) to form an n-shape. The two connecting blocks (11) are respectively connected to the first arc-shaped clamp (1). The limiting screw hole (1211) is provided on the support block (121).
9. A tool according to claim 8, wherein, The first arc-shaped clamp (1) is provided with a guide groove (13) for installing the connecting seat (41), and the cross section of the guide groove (13) is set as a polygon.
10. A tool according to claim 9, wherein, The projection of the guide groove (13) on the support block (121) is located within the limiting screw hole (1211).