Assembling and disassembling tool for bearing lock nut
By designing a tooling system for disassembling and assembling bearing lock nuts, and utilizing a hole group and torque wrench structure, the problem of difficult disassembly and assembly of lock nuts in shredders was solved, achieving a simple, precise, and convenient disassembly and assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-13
AI Technical Summary
In the tobacco processing process, the disassembly and assembly of the lock nut of the shredder is difficult, especially due to its large size and compact structure.
Design a tool for disassembling and assembling a bearing lock nut, including a cylinder, a first connector and a second connector. The tool facilitates the passage of an operating rod through a hole group and a mating structure. When used in conjunction with a torque wrench, the lock nut can be tightened or loosened.
It reduces the difficulty of tightening or loosening the lock nut, reduces the operating force required, and facilitates the handling and space utilization of the disassembly and assembly tooling, thus avoiding damage to the lock nut or spindle.
Smart Images
Figure CN223989474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling technology, and in particular to a tooling for disassembling and assembling a bearing lock nut. Background Technology
[0002] In tobacco processing, a shredder is typically used to shred the tobacco. The shredder includes a motor bearing, a main shaft, and a lock nut. The lock nut is threaded onto the main shaft, and the inner ring of the bearing is clamped and fixed by the lock nut and the stepped surface on the main shaft.
[0003] Because the main shaft and motor bearings (hereinafter referred to as bearings) of the shredder are both large in size, the lock nut is also large in size. Furthermore, because the internal structure of the shredder is relatively compact, it is difficult for operators to disassemble and assemble the lock nut. Utility Model Content
[0004] The purpose of this utility model is to provide a tooling for disassembling and assembling bearing lock nuts, which makes the disassembly and assembly of lock nuts less difficult.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A tooling for disassembling and assembling a bearing lock nut is provided, comprising:
[0007] A cylindrical body, wherein at least one group of holes is provided on the cylindrical body, the group of holes including a first hole and a second hole facing each other along the axial direction of the cylindrical body, and both the first hole and the second hole penetrate the cylindrical wall of the cylindrical body;
[0008] A first connector is located at one end of the cylinder. The first connector has a first mating structure along the axial direction of the cylinder, on a side opposite to the cylinder. The central axis of the first mating structure coincides with the central axis of the cylinder. The first mating structure is used for connecting a torque wrench.
[0009] The second connector is located opposite the first connector at the other end of the cylinder. The second connector has a second mating structure. The central axis of the second mating structure is offset from the central axis of the cylinder, and the second mating structure can be engaged with the lock nut.
[0010] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, the cylinder is provided with a plurality of hole groups, including at least one first hole group and at least one second hole group. The first hole group and the second hole group correspond one-to-one. The first hole and the second hole in the same hole group have a center point line connecting them. The center point line connecting the first hole group and the center point line connecting the corresponding second hole group form an angle.
[0011] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, the line connecting the center points of the first hole group and the line connecting the center points of the corresponding second hole group form an angle θ, where 80°≤θ≤100°.
[0012] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, along the axial direction of the cylinder, the line connecting the center points of the first hole group is spaced apart from the line connecting the center points of the corresponding second hole group.
[0013] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, along the axial direction of the cylinder, the distance between the line connecting the center points of the first hole group and the line connecting the center points of the corresponding second hole group is d, and the diameter of the first hole and the diameter of the second hole are both r1, 0mm < d < r1.
[0014] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, the plurality of hole groups include a plurality of first hole groups and a plurality of second hole groups, the plurality of first hole groups being distributed at intervals along the axial direction of the cylinder, and the plurality of second hole groups being distributed at intervals along the axial direction of the cylinder.
[0015] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, along the axial direction of the cylinder, any of the hole groups is spaced apart from other non-corresponding hole groups.
[0016] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, the second connector is an annular structure, which can be sleeved on the outer periphery of the lock nut. The second mating structure is provided on the inner side of the second connector, and the second mating structure is a convex strip structure extending along the axial direction of the cylinder. The outer periphery of the lock nut is provided with a groove, which extends through both ends of the lock nut along the axial direction of the cylinder. The convex strip structure can engage with or disengage from the groove along the axial direction of the cylinder.
[0017] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, the second connector has a maximum diameter r2, and the cylinder and the first connector together have a maximum diameter r3, where r3≤r2.
[0018] As a preferred technical solution for the disassembly and assembly tooling of the bearing lock nut, the inner ring of the bearing has a diameter r4, and the maximum diameter r2 of the second joint satisfies: r2≤r4.
[0019] The beneficial effects of this utility model are as follows:
[0020] By providing a bearing lock nut assembly / disassembly fixture, a second mating structure is provided to engage with the lock nut. A set of holes is provided on the cylindrical body, allowing an operating rod to pass through the first and second holes sequentially. The operator can then rotate the entire assembly / disassembly fixture by rotating the operating rod, causing the second mating structure to rotate the lock nut thread around the spindle, thus initially tightening or loosening the inner ring of the bearing significantly. Because the operating rod easily applies a large torque to the assembly / disassembly fixture, and the cylindrical body allows the operator to operate within a different space than the space near the lock nut, the operating force required for significant tightening or loosening of the lock nut is relatively small, and the operating space can be large, making the operation of significantly tightening or loosening the lock nut easier.
[0021] Furthermore, the first mating structure allows for the connection of a torque wrench, enabling the operator to rotate the disassembly and assembly tool by operating the torque wrench. This rotates the lock nut thread onto the main shaft, allowing for precise control of the torque applied to the lock nut by the disassembly and assembly tool. This prevents damage to the lock nut or the main shaft. Since the operating space during this process is relatively large, the operator has a lower difficulty in controlling the torque to tighten the lock nut.
[0022] Furthermore, due to the large dimensions of the spindle, bearings, and lock nuts of the shredder, the disassembly and assembly fixtures are also large and heavy, making them difficult for operators to handle directly. By having the operating rod pass through the first and second holes sequentially, operators can lift the operating rod to move the disassembly and assembly fixtures, making it easier for operators to apply moving force to them and facilitating joint handling by two or more operators. Attached Figure Description
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0024] Figure 1 This is a three-dimensional structural diagram of the disassembly and assembly tooling for the bearing lock nut described in the embodiment.
[0025] Figure 2 This is an exploded view of the structure of the bearing lock nut assembly / disassembly tooling described in the embodiment.
[0026] Figure 3 This is a cross-sectional view of the cylinder described in the embodiment.
[0027] Figure 4 This is a three-dimensional cross-sectional view of the bearing lock nut disassembly and assembly tooling described in the embodiment.
[0028] Figure 5 for Figure 4 Enlarged schematic diagram of point M in the middle.
[0029] In the picture:
[0030] 1. Assembly / disassembly fixtures; 10. Cylinder body; 101. Hole group; 101a. First hole group; 101b. Second hole group; 1011. First hole; 1012. Second hole; 1013. Center point connection line; 11. First joint; 111. First mating structure; 12. Second joint; 121. Second mating structure;
[0031] 2. Lock nut; 20. Groove;
[0032] 3. Spindle;
[0033] 4. Inner circle. Detailed Implementation
[0034] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 utility model based on the specific circumstances.
[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] like Figure 1 and Figure 2As shown, this utility model provides a bearing lock nut disassembly and assembly tool 1, including a cylindrical body 10, a first connector 11, and a second connector 12. The cylindrical body 10 is provided with at least one hole group 101, which includes a first hole 1011 and a second hole 1012 facing each other along the axial direction L of the cylindrical body 10. The first hole 1011 and the second hole 1012 both penetrate the cylindrical wall of the cylindrical body 10. The first connector 11 is located at one end of the cylindrical body 10. The first connector 11 is provided with a first mating structure 111 on the side of the cylindrical body 10 away from the cylindrical body 10 along the axial direction L. The central axis of the first mating structure 111 coincides with the central axis of the cylindrical body 10. The first mating structure 111 is used for connection with a torque wrench. The second connector 12 is located opposite to the first connector 11 at the other end of the cylindrical body 10. The second connector 12 is provided with a second mating structure 121. The central axis of the second mating structure 121 is offset from the central axis of the cylindrical body 10, and the second mating structure 121 can be engaged with the lock nut 2.
[0038] By providing a bearing lock nut 2 disassembly and assembly tool 1, a second mating structure 121 is provided to engage with the lock nut 2. By providing a hole group 101 on the cylinder 10, the first hole 1011 and the second hole 1012 can be passed through sequentially by the operating rod. Then, the operator can rotate the entire disassembly and assembly tool 1 by rotating the operating rod, so that the second mating structure 121 can drive the lock nut 2 to be threaded and twisted on the main shaft 3, so as to initially tighten or loosen the inner ring 4 of the bearing significantly. Since it is easy to apply a large torque to the disassembly and assembly tool 1 through the operating rod, and the space where the operator applies the operation to the disassembly and assembly tool 1 through the cylinder 10 is a different space from the space near the lock nut 2, the operating force required for the operator to tighten or loosen the lock nut 2 significantly is small, and the operating space of this operation process can be large, so the difficulty of the operator to tighten or loosen the lock nut 2 significantly is low.
[0039] Furthermore, the torque wrench is connected via the first mating structure 111, allowing the operator to rotate the disassembly / assembly tool 1 by operating the torque wrench. This causes the lock nut 2 to be threaded onto the spindle 3, and the torque applied to the lock nut 2 by the disassembly / assembly tool 1 can be precisely controlled, preventing damage to the lock nut 2 or the spindle 3. Since the operating space in this process is relatively large, the operator has a lower difficulty in controlling the torque to tighten the lock nut 2.
[0040] Furthermore, since the main shaft 3, bearings, and lock nut 2 of the shredder are all relatively large, the disassembly and assembly fixture 1 is also relatively large, making it heavy and difficult for operators to move directly. By having the operating rod pass through the first hole 1011 and the second hole 1012 in sequence, operators can move the disassembly and assembly fixture 1 by lifting the operating rod. This makes it easier for operators to apply moving force to the disassembly and assembly fixture 1 and also facilitates two or more operators to move the disassembly and assembly fixture 1 together.
[0041] Optionally, the first mating structure 111 can be any structure that can be mated and connected to a torque wrench. For example, the first mating structure 111 can be, but is not limited to, a hexagonal prism structure, a quadrangular prism structure, or a structure with a hexagonal groove.
[0042] Please combine Figure 3 As shown, since the operator's minimum effort required to rotate the tool 1 when rotating the operating rod is generally less than 180°, when using a pair of first holes 1011 and second holes 1012 to rotate the operating rod, the operator needs to use considerable force to rotate the operating rod outside the minimum effort required rotation angle range. Therefore, optionally, the cylinder 10 is provided with multiple hole groups 101, each including at least one first hole group 101a and at least one second hole group 101b. The first hole group 101a and the second hole group 101b correspond one-to-one, and the first hole 1011 and the second hole 1012 within the same hole group 101 have a central... The line connecting the center points of the first hole group 101a and the corresponding line connecting the center points of the second hole group 101b forms an angle. This allows the operator to pass the operating rod through the first hole 1011 and the second hole 1012 of the first hole group 101a and rotate the operating rod within a relatively effortless range of rotation. After that, the operating rod can be pulled out from the first hole 1011 and the second hole 1012 of the first hole group 101a and then passed through the first hole 1011 and the second hole 1012 of the second hole group 101b. This allows the operator to continue rotating the operating rod within a relatively effortless range of rotation, further reducing the difficulty for the operator to significantly tighten or loosen the lock nut 2.
[0043] Since the operator can rotate the operating rod to rotate the disassembly and assembly tool 1 with minimal effort, the rotation angle range is approximately 90°. Therefore, optionally, the line 1013 connecting the center points of the first hole group 101a and the line 1013 connecting the center points of the corresponding second hole group 101b form an angle θ, 80°≤θ≤100°. For example, the angle θ can be 80°, 82°, 85°, 87°, 90°, 92°, 95°, 97°, or 100°, so that the distribution of the corresponding first hole group 101a and second hole group 101b is more suitable for the operator to complete the operation of tightening or loosening the lock nut 2 with less effort.
[0044] Please combine Figure 4As shown, optionally, along the axial direction L of the cylinder 10, the line 1013 connecting the center points of the first hole group 101a and the line 1013 connecting the center points of the corresponding second hole group 101b are spaced apart, so that the corresponding first hole group 101a and second hole group 101b are offset along the axial direction L of the cylinder 10, which can avoid the problem of poor local structural strength of the cylinder 10 due to the first hole group 101a and the second hole group 101b being too concentrated.
[0045] Optionally, along the axial direction L of the cylinder 10, the distance between the line connecting the center points of the first hole group 101a and the corresponding line connecting the center points of the second hole group 101b is d. The diameter of the first hole 1011 and the diameter of the second hole 1012 are both r1, where 0mm < d < r1. Thus, the projections of the first hole group 101a and the second hole group 101b along the circumferential direction of the cylinder 10 overlap, which can avoid the first hole group 101a and the second hole group 101b having too large an offset distance along the axial direction L of the cylinder 10. This also avoids the operator having to perform large-scale tightening or loosening operations on the lock nut 2 using the corresponding first hole group 101a and the second hole group 101b. The force applied during operation is more consistent, in other words, it can make it easier for the operator to operate using the corresponding first hole group 101a and the second hole group 101b.
[0046] In other embodiments, d may also be 0 mm.
[0047] During the process of tightening or loosening the lock nut 2 using the disassembly and assembly tool 1, as the lock nut 2 is continuously tightened or loosened on the main shaft 3, the relative position of the lock nut 2 and the main shaft 3 along the axial direction L of the cylinder 10 will also change. This will cause the disassembly and assembly tool 1 to move closer to or further away from the main shaft 3 along the axial direction L of the cylinder 10. Consequently, the relative position of the operator's optimal operating space and the cylinder 10 will also change. Based on this, optionally, the multiple hole groups 101 include multiple first hole groups 101a and multiple second hole groups 101b. The multiple first hole groups 101a are spaced apart along the axial direction L of the cylinder 10, and the multiple second hole groups 101b are spaced apart along the axial direction L of the cylinder 10. This allows the operator to select the most suitable hole group 101 to tighten or loosen the lock nut 2 according to the relative position of the cylinder 10 and the optimal operating space.
[0048] Optionally, along the axial direction L of the cylinder 10, any hole group 101 is spaced apart from other non-corresponding hole groups 101, thereby making the spacing between the hole group 101 and other non-corresponding hole groups 101 along the axial direction L of the cylinder 10 larger. This allows the operator to perform large-scale tightening or loosening of the lock nut 2 with less effort and simplicity, given a fixed length of the cylinder 10, through fewer hole groups 101. This simplifies the structure of the cylinder 10 and avoids the problem of poor structural strength caused by too many hole groups 101 in the cylinder 10.
[0049] Please combine Figure 5 As shown, optionally, the second connector 12 is an annular structure. The second connector 12 can be sleeved on the outer periphery of the lock nut 2. The second mating structure 121 is provided on the inner side of the second connector 12. The second mating structure 121 is a convex structure extending along the axial direction L of the cylinder 10. The outer periphery of the lock nut 2 is provided with a groove 20. The groove 20 passes through both ends of the lock nut 2 along the axial direction L of the cylinder 10. The convex structure can engage with or disengage from the groove 20 along the axial direction L of the cylinder 10. Thus, the operator can move the entire assembly / disassembly tool 1 along the axial direction L of the cylinder 10 towards the lock nut 2 so that the second connector 12 engages with the groove 20 of the lock nut 2. The operator can also move the entire assembly / disassembly tool 1 away from the lock nut 2 along the axial direction L of the cylinder 10 so that the second connector 12 disengages from the groove 20 of the lock nut 2. The connection and disassembly operations of the assembly / disassembly tool 1 and the lock nut 2 are simple.
[0050] In other embodiments, the second mating structure 121 can be protruding from the end of the second connector 12 away from the cylinder 10, and the lock nut 2 can be provided with a locking hole that can be engaged with the second mating structure 121. Alternatively, the second mating structure 121 can be any existing structure that can be connected with the lock nut 2 and can drive the lock nut 2 to rotate. This embodiment does not impose any specific limitations.
[0051] Optionally, the second connector 12 has a maximum diameter r2, and the cylinder 10 and the first connector 11 together have a maximum diameter r3, r3≤r2, so that the radial dimension of the assembly and disassembly fixture 1 is suitable to be close to or far from the main shaft 3 along the axial direction L of the cylinder 10, while not easily interfering with other structures of the shredder.
[0052] Optionally, the inner ring 4 of the bearing has a diameter r4, and the maximum diameter r2 of the second connector 12 satisfies: r2≤r4. Thus, when the second connector 12 is engaged with the lock nut 2, the second connector 12 is less likely to interfere with the outer ring structure of the bearing, so as to avoid the second connector 12 contacting the outer ring of the bearing, thereby affecting the operation process of clamping or loosening the inner ring 4 of the bearing through the lock nut 2 and the main shaft 3.
[0053] Preferably, the maximum diameter r2 of the second connector 12, the maximum diameter r3 of the cylinder 10 and the first connector 11 as a whole, and the diameter r4 of the inner ring 4 of the bearing can satisfy: r3≤r2≤r4, so as to better avoid interference between the disassembly and assembly tooling 1 and the structure other than the lock nut 2 in the shredder.
[0054] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation. They 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 utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.
[0055] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0057] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.
Claims
1. A bearing lock nut dismounting tool, characterized in that, The application relates to a wrench, which comprises: a cylinder body provided with at least one hole group, the hole group comprising a first hole and a second hole which are axially opposite to each other and both penetrate the cylinder wall of the cylinder body; a first joint provided at one end of the cylinder body, the first joint being provided with a first matching structure on the side away from the cylinder body along the axial direction of the cylinder body, the central axis of the first matching structure coincides with the central axis of the cylinder body, and the first matching structure is used for matching connection with a torque wrench; and a second joint provided at the other end of the cylinder body opposite to the first joint, the second joint being provided with a second matching structure, the central axis of the second matching structure deviates from the central axis of the cylinder body, and the second matching structure can be clamped on a lock nut.
2. The bearing lock nut dismounting tool according to claim 1, wherein The cylinder body is provided with a plurality of hole groups, the plurality of hole groups comprise at least one first hole group and at least one second hole group, the first hole group and the second hole group correspond to each other, the first hole and the second hole in the same hole group have a center point connecting line, and the center point connecting line of the first hole group and the center point connecting line of the corresponding second hole group form an included angle.
3. The bearing lock nut dismounting tool according to claim 2, wherein The center point connecting line of the first hole group and the center point connecting line of the corresponding second hole group form an included angle theta, 80 DEG <= theta <= 100 DEG.
4. The bearing lock nut installation and removal tool of claim 2, wherein, Along the axial direction of the cylinder body, the center point connecting line of the first hole group and the center point connecting line of the corresponding second hole group are spaced apart.
5. The bearing lock nut installation and removal tool of claim 4, wherein, Along the axial direction of the cylinder body, the spacing between the center point connecting line of the first hole group and the center point connecting line of the corresponding second hole group is d, the hole diameter of the first hole and the hole diameter of the second hole are both r1, and 0 mm < d < r1.
6. The bearing lock nut installation and removal tool of any one of claims 2-5, wherein, The plurality of hole groups comprise a plurality of first hole groups and a plurality of second hole groups, the plurality of first hole groups are spaced apart along the axial direction of the cylinder body, and the plurality of second hole groups are spaced apart along the axial direction of the cylinder body.
7. The bearing lock nut installation and removal tool of claim 6, wherein, Along the axial direction of the cylinder body, any hole group is spaced apart from other non-corresponding hole groups.
8. The bearing lock nut installation and removal tool of any one of claims 1-5, wherein, The second joint is a ring structure, the second joint can be sleeved on the outer periphery of the lock nut, the second matching structure is arranged on the inner side surface of the second joint, and the second matching structure is a convex strip structure extending along the axial direction of the cylinder body, the outer periphery of the lock nut is provided with a groove, the groove penetrates the two end surfaces of the lock nut along the axial direction of the cylinder body, and the convex strip structure can be matched and clamped in or separated from the groove along the axial direction of the cylinder body.
9. The bearing lock nut installation and removal tool of any one of claims 1-5, wherein, The second joint has a maximum diameter r2, the cylinder body and the first joint have a maximum diameter r3 as a whole, and r3 <= r2.
10. The bearing lock nut installation and removal tool of any one of claims 1-5, wherein, The inner ring of the bearing has a diameter r4, and the maximum diameter r2 of the second joint satisfies r2 <= r4.