Shaft head locking nut structure
By designing a shaft head lock nut structure including shaft head body, spring, stop washer, shaft head lock nut, shaft sleeve and outer bearing, the problems of poor locking effect, low adjustment accuracy and short service life in the prior art are solved, and better locking effect, higher adjustment accuracy and longer service life are achieved.
Patent Information
- Application Number
- CN202422029678.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing bearing locking structures have problems in the field of drive axles with poor locking effect, low adjustment accuracy and short service life, especially in the control of bearing axial clearance.
A shaft head locking nut structure is designed, including the shaft head body, a spring, a stop washer, a shaft head locking nut, a sleeve and an outer bearing. The function of locking the outer bearing is achieved through the cooperation of the shaft head locking nut and the sleeve, and the cooperation of the stop washer and the shaft head locking nut is prevented from loosening, and the spring prevents the axial movement of the stop washer.
It achieves the improvement of locking effect, the improvement of adjustment accuracy and the extension of service life, ensuring the stability and long-term effectiveness of the bearing.
Smart Images
Figure CN222836099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shaft head locking nut structures, in particular to a shaft head locking nut structure. Background Art
[0002] At present, in the axle industry, the commonly used structures for locking bearings and adjusting bearing axial clearance are cotter pin type and lock plate type. Affected by the spatial structure, the cotter pin type is not suitable in the field of drive axles because of the half shafts. The lock plate type structure has been used. This structure consists of three parts: inner and outer nuts and lock plates. After the inner nut is locked with the specified torque, it is loosened 1 / 8 to 1 / 16 turns. The inner nut is locked with a lock plate, and then the outer nut is locked. The outer nut is locked with a lock plate and then loosened 1 / 8 to 1 / 16 turns. The axial clearance of the bearing is controlled at 0.125 to 0.25 mm. The axial clearance is too large, which has a greater impact on the life of the bearing. North America controls the axial clearance of the bearing at 0.025 to 0.125 mm. In a large number of practical applications, the clearance bearing with a clearance of 0.025 to 0.08 mm has the longest life. Therefore, a shaft head locking nut structure is urgently needed to overcome the above defects. Utility Model Content
[0003] The utility model aims to provide a shaft head locking nut structure, which has the advantages of good locking effect, higher adjustment accuracy and long service life, so as to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaft head locking nut structure, comprising a shaft head body, a retaining ring, a stop washer, a shaft head locking nut, a sleeve and an outer bearing, wherein the outer bearing sleeve is arranged on the surface of the shaft head body, the sleeve is arranged on the right side of the outer bearing, the shaft head locking nut is arranged on the right side of the sleeve, the stop washer is arranged on the right side of the shaft head locking nut, and the retaining ring is arranged on the right side of the stop washer.
[0005] Furthermore, the interior of the shaft head locking nut is rotatably connected to the surface of the shaft head body through a thread, and the right side of the shaft head locking nut is meshed with the right side of the stop washer through internal teeth.
[0006] Furthermore, the inner cavity of the stop washer is engaged with the surface of the shaft head body, and the number of internal teeth on the outer end surface of the shaft head locking nut is thirty.
[0007] Furthermore, the retaining ring is clamped in a retaining ring groove on the surface of the shaft head body.
[0008] In summary, due to the adoption of the above technology, the beneficial effects of the utility model are:
[0009] The utility model realizes the function of locking the outer bearing by arranging a shaft head locking nut to press the shaft sleeve when locking. The outer end face of the shaft head locking nut has internal teeth for cooperating with a stop washer, and mainly has the function of good locking effect. The stop washer is arranged to cooperate with the shaft head locking nut, and the inner ring has a tooth stuck in the keyway to prevent it from rotating and loosening. The retaining ring is arranged to be stuck in the retaining ring groove of the shaft head body to prevent the stop washer from axial movement and falling off. The cooperation between them has a locking function. The cooperation between the shaft head locking nut and the shaft head body has an adjustment function. When the shaft head locking nut is locked under a specified torque, it is loosened by ≤1 tooth so that the stop washer is stuck in the keyway inside the shaft head locking nut, and the external teeth are meshed with the internal teeth of the shaft head locking nut. Then the retaining ring is installed to realize the adjustment and locking function. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the explosion structure of the utility model;
[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.
[0012] In the figure: 1. shaft head body; 2. retaining ring; 3. locking washer; 4. shaft head locking nut; 5. shaft sleeve; 6. outer bearing. DETAILED DESCRIPTION
[0013] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0014] The utility model provides Figure 1-2 As shown, a shaft head locking nut structure comprises a shaft head body 1, a retaining ring 2, a stop washer 3, a shaft head locking nut 4, a sleeve 5 and an outer bearing 6, wherein the outer bearing 6 is sleeved on the surface of the shaft head body 1, the sleeve 5 is arranged on the right side of the outer bearing 6, the shaft head locking nut 4 is arranged on the right side of the sleeve 5, the stop washer 3 is arranged on the right side of the shaft head locking nut 4, and the retaining ring 2 is arranged on the right side of the stop washer 3;
[0015] More specifically, the function of locking the outer bearing 6 is achieved by setting the shaft head locking nut 4 to press the sleeve 5 when locking. The outer end face of the shaft head locking nut has internal teeth for cooperating with the stop washer 3, which mainly has the function of good locking effect. The stop washer 3 is matched with the shaft head locking nut 4, and its inner ring has a tooth stuck in the keyway to prevent it from rotating and loosening. The retaining ring 2 is set to be stuck in the retaining ring groove of the shaft head body 1 to prevent the stop washer 3 from axial movement and falling off. The cooperation between them has a locking function.
[0016] In some embodiments, the interior of the shaft head locking nut 4 is rotatably connected to the surface of the shaft head body 1 through a thread, and the right side of the shaft head locking nut 4 is meshed with the right side of the stop washer 3 through internal teeth. More specifically, the cooperation between the shaft head locking nut 4 and the shaft head body 1 has an adjustment function. After the shaft head locking nut 4 is tightened under the specified torque, it is loosened by ≤1 tooth so that the stop washer 3 is stuck in the keyway inside the shaft head locking nut 4, and the external teeth are meshed with the internal teeth of the shaft head locking nut 4, and then the retaining spring 2 is installed to realize the adjustable locking function.
[0017] In some embodiments, the inner cavity of the stop washer 3 is engaged with the surface of the shaft head body 1, and the number of internal teeth on the outer end surface of the shaft head locking nut 4 is thirty. More specifically, the stop washer 3 is mainly engaged with the groove on the surface of the shaft head body 1, thereby preventing the shaft head locking nut 4 from shaking during long-term use.
[0018] In some embodiments, the retaining spring 2 is clamped in a retaining spring groove on the surface of the shaft head body 1. More specifically, the retaining spring 2 is provided to mainly limit the position of the stop washer 3, thereby ensuring the stability of the overall device.
[0019] Working principle:
[0020] When in use: by setting the shaft head locking nut 4 to press the shaft sleeve 5 when locking, the function of locking the outer bearing 6 is realized; its outer end face has an inner tooth for cooperating with the stop washer 3, which mainly has the function of good locking effect; by setting the stop washer 3 to cooperate with the shaft head locking nut 4, its inner ring has a tooth stuck in the keyway to prevent it from rotating and loosening; by setting the retaining ring 2 to be stuck in the retaining ring groove of the shaft head body 1, the retaining washer 3 is prevented from axial movement and falling off; the cooperation between them has the function of locking; through the shaft head locking nut 4 and the shaft head body 1, the locking nut 4 and the shaft head body 1 are locked. It has the function of adjustment. After the shaft head locking nut 4 is tightened under the specified torque, it is loosened by ≤1 tooth so that the stop washer 3 is stuck in the keyway inside the shaft head locking nut 4, and the external teeth are meshed with the internal teeth of the shaft head locking nut 4. Then the retaining spring 2 is installed to realize the adjustment and locking function. The stop washer 3 is mainly engaged with the groove on the surface of the shaft head body 1 to prevent the shaft head locking nut 4 from shaking during long-term use. The retaining spring 2 is mainly used to limit the position of the stop washer 3 to ensure the stability of the overall device.
[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
Claims
1. A shaft head locking nut structure, characterized in that: The invention comprises a shaft head body (1), a retaining ring (2), a stop washer (3), a shaft head locking nut (4), a shaft sleeve (5) and an outer bearing (6), wherein the outer bearing (6) is sleeved on the surface of the shaft head body (1), the shaft sleeve (5) is arranged on the right side of the outer bearing (6), the shaft head locking nut (4) is arranged on the right side of the shaft sleeve (5), the stop washer (3) is arranged on the right side of the shaft head locking nut (4), and the retaining ring (2) is arranged on the right side of the stop washer (3).
2. The shaft head locking nut structure according to claim 1, characterized in that: The interior of the shaft head locking nut (4) is rotatably connected to the surface of the shaft head body (1) via a thread, and the right side of the shaft head locking nut (4) is meshed with the right side of the stop washer (3) via internal teeth.
3. The shaft head locking nut structure according to claim 1, characterized in that: The inner cavity of the stop washer (3) is snap-fitted to the surface of the shaft head body (1), and the number of internal teeth on the outer end surface of the shaft head locking nut (4) is thirty.
4. The shaft head locking nut structure according to claim 1, characterized in that: The retaining ring (2) is retained in a retaining ring groove on the surface of the shaft head body (1).