Torsional vibration resistant motor spindle spline transmission device
By setting spline protrusions and grooves on the inner wall of the spline sleeve, injecting lubricant into the outer ring box, and combining it with spring buffering, the wear and noise problems caused by the rigid connection of the motor spindle are solved, achieving the effects of anti-torsional vibration and extended service life.
Patent Information
- Application Number
- CN202421261386.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-04
AI Technical Summary
In the existing motor spindle design, the spline bushing is rigidly connected to the spindle after welding, which leads to rapid wear and makes it easy to generate noise and abnormal sounds during startup and operation.
The inner wall of the spline sleeve is equipped with spline protrusions and circular grooves. Lubricant is injected into the outer ring box and seeps into the spline grooves and protrusions through micropores. Combined with the spring buffer structure, wear and impact are reduced.
Reduce wear on the spline shaft and spline sleeve, reduce noise, extend service life, and achieve anti-torsional vibration effect.
Smart Images
Figure CN222334312U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spline transmission devices, in particular to a motor main shaft spline transmission device which is resistant to torsional vibration. Background Art
[0002] Splines are used in coaxial torque transmission situations in rotating machinery. They are made by the cooperation of the teeth of the spline sleeve and the spline shaft. They have a simple structure, mature technology and low cost.
[0003] The existing motor spindle design is to weld the spline sleeve and the spindle together. After the transmission spline shaft is inserted into the spline sleeve, the spline sleeve and the spline shaft are rigidly connected and transmitted. The sleeve wears quickly and is prone to collision during motor startup and operation, generating noise and abnormal sounds.
[0004] Therefore, it is necessary to propose a motor spindle spline transmission device that is resistant to torsional vibration to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a motor spindle spline transmission device that is resistant to torsional vibration, so as to solve the problem that the existing motor spindle design is to weld the spline sleeve and the spindle together, after the transmission spline shaft is inserted into the spline sleeve, the spline sleeve and the spline shaft are rigidly connected and transmitted, the sleeve wears quickly, and it is easy for them to collide with each other during the startup and operation of the motor, thereby generating noise and abnormal sound.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor spindle spline transmission device that is resistant to torsional vibration, comprising a spindle body, a spline shaft fixedly connected to the spindle body, a spline sleeve slidingly sleeved on the spline shaft, a spline protrusion integrally formed on the inner wall of the spline sleeve, a circular groove formed on the spline protrusion, the circular groove penetrates the outer wall of the spline sleeve, a ring box is fixedly connected to the outside of the spline sleeve, the ring box surrounds the outside of the spline sleeve, the ring box is provided with microholes that communicate with the circular groove, and lubricating liquid is injected into the interior of the ring box.
[0007] Preferably, a sponge ring is provided inside the ring box.
[0008] Preferably, a liquid injection hole is provided through the outer ring of the ring box.
[0009] Preferably, the spline protrusion is provided in plurality, and the plurality of spline protrusions are evenly distributed around the inner wall of the spline sleeve.
[0010] Preferably, a spline groove adapted to the spline protrusion is integrally formed on the outer wall of the spline shaft, and the spline groove is provided in plurality, and the plurality of spline grooves are distributed in a one-to-one correspondence with the plurality of spline protrusions.
[0011] Preferably, a sealing cover is provided at one end of the spline sleeve away from the spline shaft, and the sealing cover is fixedly connected to the spline sleeve by screws. The screws are provided in plurality and are evenly distributed around the axis of the sealing cover.
[0012] Preferably, a spring is provided between the sealing cover and the spline shaft, one end of the spring is fixedly connected to the sealing cover, and the other end of the spring abuts against the spline shaft.
[0013] Technical effects and advantages of the utility model:
[0014] 1. The utility model provides structures such as circular grooves, ring boxes and micropores, so that the lubricating liquid penetrates from the micropores and circular grooves into the corresponding spline grooves and spline protrusions, thereby reducing the wear of the spline shaft and the spline sleeve and extending the service life;
[0015] 2. When the spline shaft and the spline sleeve slide relative to each other, the spring can relieve the force and buffer, reduce the impact between the spline shaft and the spline sleeve, achieve the effect of anti-torsion vibration, reduce the noise level and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a schematic diagram of the structure of the motor main shaft spline transmission device with anti-torsion vibration.
[0017] Figure 2 The utility model is a schematic cross-sectional structure diagram of a motor main shaft spline transmission device that resists torsional vibration.
[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.
[0019] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.
[0020] Figure 5 This is a schematic diagram of the structure of the spline shaft and spline sleeve of the utility model.
[0021] In the figure: 1. main shaft body; 2. spline shaft; 3. spline sleeve; 4. spline groove; 5. spline protrusion; 6. circular groove; 7. ring box; 8. sponge ring; 9. injection hole; 10. sealing cover; 11. spring; 12. screw; 13. micro hole. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The utility model provides Figure 1 to Figure 5 The motor main shaft spline transmission device shown in the figure is resistant to torsional vibration, comprising a main shaft body 1, a spline shaft 2 is fixedly connected to the main shaft body 1, and a spline sleeve 3 is provided on the spline shaft 2. A spline protrusion 5 is integrally formed on the inner wall of the spline sleeve 3, and the spline protrusion 5 is provided in plurality, and the plurality of spline protrusions 5 are evenly distributed around the inner wall of the spline sleeve 3, and a spline groove 4 adapted to the spline protrusion 5 is integrally formed on the outer wall of the spline shaft 2, and the spline groove 4 is provided in plurality, and the plurality of spline grooves 4 are distributed in one-to-one correspondence with the plurality of spline protrusions 5.
[0024] Considering that the spline shaft 2 and the spline sleeve 3 are prone to wear when they slide relative to each other during use, in order to reduce wear, a circular groove 6 is provided on the spline protrusion 5, and the circular groove 6 penetrates the outer wall of the spline sleeve 3. The outside of the spline sleeve 3 is fixedly connected with a ring box 7, which surrounds the outside of the spline sleeve 3. The ring box 7 is provided with a micro hole 13 that communicates with the circular groove 6. The inside of the ring box 7 is injected with lubricating liquid, and the lubricating liquid penetrates from the micro hole 13 and the circular groove 6 to the corresponding spline groove 4 and the spline protrusion 5, thereby reducing the wear of the spline shaft 2 and the spline sleeve 3 and extending the service life.
[0025] In order to improve the use efficiency of the lubricating liquid and avoid random dripping, a sponge ring 8 is arranged inside the ring box 7.
[0026] The outer ring of the ring box 7 is penetrated with a liquid injection hole 9, through which lubricating liquid is added to the interior of the ring box 7. When in use, a sealing cap (not shown in the figure) is also provided to cooperate with the liquid injection hole 9 to prevent the lubricating liquid from dripping out.
[0027] It should be noted that the ring box 7 and other structures can also be set on the outer ring of the spline sleeve 3 in an embedded manner, that is, the outer ring of the ring box 7 is aligned with the outer ring of the spline sleeve 3, which can be adjusted according to specific usage conditions.
[0028] A sealing cover 10 is provided at one end of the spline sleeve 3 away from the spline shaft 2. The sealing cover 10 is fixedly connected to the spline sleeve 3 by screws 12. The screws 12 are provided in plurality and are evenly distributed around the axis of the sealing cover 10. A spring 11 is provided between the sealing cover 10 and the spline shaft 2. One end of the spring 11 is fixedly connected to the sealing cover 10, and the other end of the spring 11 abuts against the spline shaft 2.
[0029] During use, when the spline shaft 2 and the spline sleeve 3 slide relative to each other, the spring 11 can perform force relief and buffering to reduce the impact between the spline shaft 2 and the spline sleeve 3, thereby achieving the effect of resisting torsional vibration, reducing noise level and extending service life.
[0030] In addition, since the sealing cover 10 is fixedly connected to the spline sleeve 3 by screws 12, it can be flexibly disassembled for inspection and replacement.
Claims
1. A motor spindle spline transmission device resistant to torsional vibration, comprising a spindle body (1), characterized in that: The main shaft body (1) is fixedly connected to a spline shaft (2), a spline sleeve (3) is slidably sleeved on the spline shaft (2), a spline protrusion (5) is integrally formed on the inner wall of the spline sleeve (3), a circular groove (6) is provided on the spline protrusion (5), the circular groove (6) penetrates the outer wall of the spline sleeve (3), a ring box (7) is fixedly connected to the outside of the spline sleeve (3), the ring box (7) surrounds the outer side of the spline sleeve (3), a micro hole (13) is provided on the ring box (7) and is connected and matched with the circular groove (6), and a lubricating liquid is injected into the interior of the ring box (7).
2. A motor main shaft spline transmission device resistant to torsional vibration according to claim 1, characterized in that: A sponge ring (8) is arranged inside the ring box (7).
3. The motor spindle spline transmission device against torsional vibration according to claim 1, characterized in that: A liquid injection hole (9) is formed through the outer ring of the ring box (7).
4. The motor spindle spline transmission device resistant to torsional vibration according to claim 1, characterized in that: The spline protrusions (5) are arranged in plurality, and the plurality of spline protrusions (5) are evenly distributed around the inner wall of the spline sleeve (3).
5. A motor main shaft spline transmission device resistant to torsional vibration according to claim 4, characterized in that: A spline groove (4) adapted to the spline protrusion (5) is integrally formed on the outer wall of the spline shaft (2), and the spline groove (4) is provided in plurality, and the plurality of spline grooves (4) are distributed in a one-to-one correspondence with the plurality of spline protrusions (5).
6. The motor spindle spline transmission device resistant to torsional vibration according to claim 1, characterized in that: A sealing cover (10) is provided at one end of the spline sleeve (3) away from the spline shaft (2); the sealing cover (10) is fixedly connected to the spline sleeve (3) via screws (12); a plurality of screws (12) are provided, and the plurality of screws (12) are evenly distributed around the axis of the sealing cover (10).
7. A motor main shaft spline transmission device resistant to torsional vibration according to claim 6, characterized in that: A spring (11) is provided between the sealing cover (10) and the spline shaft (2); one end of the spring (11) is fixedly connected to the sealing cover (10), and the other end of the spring (11) abuts against the spline shaft (2).