Mounting structure and dismounting tool for shaft and bearing

Abstract

The utility model provides a shaft and bearing mounting structure and a dismounting tool, the mounting structure comprises a bearing, a shaft and a locking nut, the inner wall surface of the inner ring of the bearing is provided with internal threads, the right end of the inner ring of the bearing is provided with an extension section, and the extension section extends out of a right sealing ring of the bearing; at least two opening grooves are formed in the end face of the right end of the extension section, and openings of the opening grooves face rightwards; the shaft is provided with a threaded section, the bearing and the locking nut are both arranged on the threaded section, and the locking nut is located on the left side of the bearing; the locking nut is used for being connected with the left end face of the inner ring of the bearing in a blocking mode. According to the utility model, the disassembly and assembly between the shaft and the bearing can be conveniently realized, the disassembly and assembly efficiency is improved, and the shaft and the bearing can be effectively prevented from being damaged.

Description

Technical Field

[0001] This utility model belongs to the technical field of tobacco machine equipment parts, specifically relating to an installation structure and disassembly tool for a shaft and bearing. Background Technology

[0002] Bearings are mechanical devices used in almost all rotating equipment in tobacco factories. Their main function is to reduce energy loss due to friction in rotating equipment and to provide support and positioning for the shaft.

[0003] Currently, smooth-surfaced shafts and smooth-surfaced bearing inner rings are typically assembled using an interference fit. Installation methods usually include using a copper rod and manual hammering, sleeve installation, press-fitting, or heating. Disassembly typically involves hammering, using a bearing puller, or using a puller with a jack. This process is inconvenient, time-consuming, and labor-intensive, and can easily damage both the shaft and bearing. Therefore, designing a shaft-bearing assembly structure that facilitates easy assembly and disassembly while minimizing damage to both has become a pressing technical problem for those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide an installation structure for a shaft and bearing to solve the aforementioned technical problems in the prior art. Another purpose of this invention is to provide a disassembly and assembly tool.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A shaft and bearing mounting structure includes a bearing, a shaft, and a locking nut. The inner wall of the bearing's inner ring has an internal thread, and the right end of the bearing's inner ring has an extension extending to the outside of the bearing's right sealing ring. At least two opening slots are provided on the right end face of the extension, with the openings of the slots facing right. The shaft has a threaded section, and both the bearing and the locking nut are disposed on the threaded section, with the locking nut located on the left side of the bearing. The locking nut is used to engage with the left end face of the bearing's inner ring.

[0007] Preferably, there are multiple opening slots, and each opening slot is evenly distributed in the circumferential direction at the right end of the extension section.

[0008] Preferably, there are two opening slots, and the two opening slots are symmetrically arranged about the axis of the bearing.

[0009] A disassembly and assembly tool includes a chuck and a handle. The left end face of the chuck is used to abut against the right end face of the aforementioned extension section. At least two teeth are vertically arranged on the left end face of the chuck, and each tooth is used to cooperate with each slot on the extension section. The handle is disposed on the outer circumferential surface of the chuck.

[0010] Preferably, there are two handles, which are symmetrically arranged about the axis of the chuck.

[0011] Preferably, there are two chuck teeth, which are symmetrically arranged about the axis of the chuck.

[0012] Preferably, the two locking teeth and the two handles are arranged alternately.

[0013] Preferably, the chuck has a through hole coaxial with it at the center.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model discloses a shaft and bearing installation structure and disassembly / removal tool. During installation, the locking nut and bearing are respectively installed on the threaded section of the shaft via a threaded connection. After the bearing reaches the desired installation position, the locking nut is rotated, gradually moving closer to the bearing until it presses against the left end face of the bearing's inner ring, thus fixing the bearing and completing the shaft and bearing installation. During disassembly, the locking nut is rotated away from the bearing, and then the bearing is rotated until it detaches from the shaft, completing the shaft and bearing disassembly. Furthermore, when using this utility model's disassembly / removal tool, simply insert the chuck teeth into their respective slots, and then rotate the chuck using the handle. This allows the bearing's inner ring to rotate with the chuck, achieving convenient, quick, and labor-saving rotation of the bearing's inner ring, thereby effectively improving the efficiency of disassembly / removal operations. It is evident that this invention can conveniently facilitate the assembly and disassembly of shafts and bearings; and when assembling and disassembling shafts and bearings, there is no need to use copper rods or manual hammering, or press presses, nor is there a need to use bearing pullers or pullers and jacks, thus effectively preventing damage to shafts and bearings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of this utility model will be further described in detail with reference to the drawings.

[0017] Figure 1 A schematic diagram of the shaft and bearing mounting structure provided in an embodiment of this utility model;

[0018] Figure 2 An exploded view of the shaft and bearing mounting structure provided in an embodiment of this utility model;

[0019] Figure 3 An isometric view of the bearing provided for an embodiment of this utility model;

[0020] Figure 4 A cross-sectional view of the bearing provided in an embodiment of this utility model;

[0021] Figure 5 A schematic diagram of the disassembly and assembly tools provided in an embodiment of this utility model;

[0022] Figure 6 A schematic diagram illustrating the disassembly and assembly tool provided in this embodiment of the utility model during use.

[0023] Marked in the attached diagram:

[0024] 11. Bearing; 12. Extension section; 13. Opening groove; 14. Internal thread.

[0025] 15. Right sealing ring; 16. Outer ring; 17. Left sealing ring; 18. Inner ring.

[0026] 19. Ball bearing; 21. Lock nut; 31. Shaft; 32. Threaded section;

[0027] 41. Chuck; 42. Handle; 43. Clamping teeth; 44. Through hole. Detailed Implementation

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0031] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0032] like Figures 1 to 4As shown, this utility model embodiment provides a shaft and bearing mounting structure, which includes a bearing 11, a shaft 31, and a locking nut 21. The inner wall surface of the inner ring 18 of the bearing has an internal thread 14. The right end of the inner ring of the bearing has an extension section 12, which extends to the outside of the right sealing ring 15 of the bearing. At least two opening grooves 13 are provided on the right end face of the extension section 12, and the openings of the opening grooves 13 are arranged to the right. The shaft has a threaded section 32, and the bearing 11 and the locking nut 21 are both disposed on the threaded section 32, with the locking nut 21 located on the left side of the bearing 11. The locking nut 21 is used to abut against the left end face of the inner ring 18 of the bearing.

[0033] The shaft and bearing installation structure provided in this embodiment of the utility model involves installing the locking nut 21 and the bearing 11 onto the threaded section 32 of the shaft via threaded engagement. After the bearing reaches the desired installation position, the locking nut 21 is rotated, gradually moving closer to the bearing 11 until it presses against the left end face of the bearing's inner ring, thus fixing the bearing to the shaft and completing the shaft and bearing installation. For disassembly, the locking nut 21 is rotated away from the bearing 11, and then the inner ring 18 of the bearing is rotated until the bearing detaches from the shaft, completing the shaft and bearing disassembly. Therefore, this utility model facilitates the assembly and disassembly of the shaft and bearing; and during this process, there is no need to use copper rods, manual hammering, or pressurizing, nor is it necessary to use bearing pullers, pullers, or jacks, effectively preventing damage to the shaft and bearing.

[0034] Specifically, there are multiple opening slots 13, and each opening slot is evenly distributed in the circumferential direction at the right end of the extension section.

[0035] Preferably, there are two opening slots 13, which are symmetrically arranged about the axis of the bearing. It is understood that the bearing engages with the threaded section of the shaft via the internal thread on its inner ring. This allows for easy adjustment of the bearing 11's position on the threaded section 32 of the shaft, thus facilitating bearing installation. Both ends of the shaft can be threaded sections. In practical applications, the corresponding parts of the shaft can be set as threaded sections according to specific installation needs. In other embodiments, the diameter of the threaded section can be smaller than the diameter of other parts of the shaft. The bearing also includes other components such as a left sealing ring 17, an outer ring 16, and balls 19, which are the same as in the prior art and will not be described further here.

[0036] like Figure 5 and Figure 6As shown, this embodiment of the utility model also provides a disassembly and assembly tool, which includes a chuck 41 and a handle 42. The left end face of the chuck 41 is used to abut against the right end face of the extension section described in any of the above technical solutions. At least two teeth 43 are vertically arranged on the left end face of the chuck, and each tooth 43 is used to cooperate with each slot on the extension section. The handle 42 is disposed on the outer circumferential surface of the chuck 41. With this solution, it is only necessary to insert each tooth 43 on the chuck 41 into the slot on the extension section, so that the left end face of the chuck abuts against the right end face of the extension section. Then, by rotating the chuck with the handle, the inner ring of the bearing can be rotated with the chuck, thereby realizing the rotation of the inner ring of the bearing conveniently, quickly and effortlessly, and thus effectively improving the efficiency of disassembly and assembly operations.

[0037] In one embodiment, there are two handles 42, which are symmetrically arranged about the axis of the chuck 41. It is understood that the extension section may also have two openings in this case.

[0038] Preferably, there are two chuck teeth 43, which are symmetrically arranged about the axis of the chuck 41, so as to more conveniently realize the rotation of the chuck.

[0039] Furthermore, the two locking teeth 43 and the two handles 42 are staggered. Preferably, the two locking teeth and the two handles are evenly distributed in the circumferential direction of the chuck.

[0040] Specifically, a through hole 44 coaxial with the chuck 41 is provided at the center position, which can effectively reduce the weight of the chuck, save materials, and reduce costs. Preferably, the diameter of the through hole is equal to the inner diameter of the inner ring of the bearing.

[0041] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A shaft and bearing mounting structure, characterized in that, It includes a bearing, a shaft, and a lock nut. The inner wall of the bearing's inner ring has an internal thread, and the right end of the bearing's inner ring has an extension that extends to the outside of the bearing's right sealing ring. At least two opening slots are provided on the right end face of the extension, with the openings of the opening slots facing to the right. The shaft has a threaded section, and both the bearing and the lock nut are disposed on the threaded section, with the lock nut located on the left side of the bearing. The lock nut is used to engage with the left end face of the bearing's inner ring.

2. The shaft and bearing mounting structure according to claim 1, characterized in that, There are multiple opening slots, and each opening slot is evenly distributed in the circumferential direction at the right end of the extension section.

3. The shaft and bearing mounting structure according to claim 1, characterized in that, There are two opening slots, and the two opening slots are symmetrically arranged about the axis of the bearing.

4. A disassembly and assembly tool, characterized in that, It includes a chuck and a handle. The left end face of the chuck is used to abut against the right end face of the extension section in the shaft and bearing mounting structure of claim 1. At least two teeth are vertically arranged on the left end face of the chuck, and each tooth is used to cooperate with each slot on the extension section. The handle is arranged on the outer circumferential surface of the chuck.

5. The disassembly and assembly tool according to claim 4, characterized in that, The number of handles is two, and the two handles are symmetrically arranged about the axis of the chuck.

6. The disassembly and assembly tool according to claim 5, characterized in that, The number of chuck teeth is two, and the two chuck teeth are symmetrically arranged about the axis of the chuck.

7. The disassembly and assembly tool according to claim 6, characterized in that, The two teeth are staggered with the two handles.

8. The disassembly and assembly tool according to any one of claims 4 to 7, characterized in that, The chuck has a through hole coaxial with it at the center.

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