Speed reduction shell structure, speed reducer and vehicle
By setting up multi-function maintenance holes on the reduction housing, the problems of cumbersome oil discharging and insufficient ventilation functions of the cycloid pin wheel reducer are solved, operating reliability and maintenance efficiency are improved, and lubricant management is simplified.
Patent Information
- Application Number
- CN202421779146.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The maintenance interface design of the existing cycloid pin wheel reducer results in cumbersome oil discharging operations, inefficient efficiency, and inability to achieve ventilation functions, affecting the operating reliability and structural integrity of the reducer.
The maintenance hole is installed on the reduction housing, which directly connects the internal space through the mounting seat hole. The maintenance hole can be used as a ventilation hole, an oil drain hole, a fuel refueling hole or an oil level control hole, which is located at the top, middle and upper part or bottom of the housing, respectively, to achieve convenient lubricant management and precise control.
It improves the operating reliability and maintenance efficiency of the reducer, avoids damage to the main bearing structure, realizes the thoroughness of oil discharging and ventilation function, and simplifies maintenance operations.
Smart Images
Figure CN223063093U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of speed reducers, and particularly relates to a speed reduction housing structure, a speed reducer and a vehicle. Background Art
[0002] The cycloid pinwheel speed reducer is a transmission device that applies the principle of planetary transmission and adopts cycloid pin teeth meshing. It can achieve advantages such as large speed ratio transmission, compact structure, high transmission accuracy, and strong impact resistance, and is widely used in fields such as general machinery and precision transmission. The cycloid pinwheel speed reducer often uses liquid lubricant for lubrication. During use, it is necessary to quantitatively fill the lubricant and regularly replace the lubricant. In high-speed and high-temperature application scenarios, reliable ventilation also needs to be ensured. In the prior art, a maintenance interface that can only be used as an oil filling and draining interface is provided on the cycloid pinwheel speed reducer. Users perform operations such as refueling or draining the speed reducer through this maintenance interface; due to the compact housing structure of the cycloid pinwheel speed reducer, the maintenance interface is often arranged at the output disk or at the internal teeth of the housing. Since the output flange is a rotating part, when the maintenance interface is arranged at the output disk, the maintenance interface rotates along with it and is at a certain distance from the bottom of the lubricant level. When performing maintenance operations such as oil filling and draining, the operation is cumbersome. It is necessary to rotate the output planetary carrier to a specific angle, and the oil draining is not thorough. At the same time, since the interface will be immersed in the lubricant during operation, the ventilation function cannot be realized; when arranged at the internal teeth of the housing, due to the internal parts shielding the inner side of the maintenance interface, the oil filling and draining efficiency is low. And since the internal teeth are the main load-bearing structure, opening a through interface has an adverse effect on the structural integrity of the speed reducer housing. Also, the deburring process for the inner side of the maintenance interface is relatively complex. At the same time, due to the meshing movement at the internal teeth during operation, a pumping effect will be generated on the inner side of the maintenance interface, resulting in the maintenance interface being immersed in the lubricant, so the ventilation function cannot be realized. Summary of the Utility Model
[0003] Aiming at the technical problems such as insufficient functions of the maintenance interface and poor maintenance effect in the cycloid pinwheel speed reducer in the prior art, the utility model provides a speed reduction housing structure, a speed reducer and a vehicle.
[0004] To solve the above problems, an embodiment of the utility model provides a speed reduction housing structure, which includes a speed reduction housing with an internal space. Mounting seat holes for installing bearings and / or oil seals are provided on the inner wall of the internal space; at least one maintenance hole is provided on the speed reduction housing, and the maintenance hole communicates with the internal space through the mounting seat hole.
[0005] Optionally, the maintenance hole includes a groove and a through hole communicating with the groove, and one end of the groove far from the through hole communicates with the mounting seat hole.
[0006] Optionally, on a plane perpendicular to the axial direction of the through hole, the opening cross-sectional area of the groove gradually decreases from the mounting seat hole towards the through hole.
[0007] Optionally, the reduction housing structure further includes a plugging member detachably inserted into the maintenance hole.
[0008] Optionally, the maintenance hole includes a ventilation hole for ventilating the internal space, and the ventilation hole is provided at the top of the reduction housing.
[0009] Optionally, the maintenance hole includes an oil drain hole for draining oil from the internal space and an oil filling hole for filling oil into the internal space; the oil drain hole is provided at the bottom of the reduction housing; the connection between the oil filling hole and the mounting seat hole is higher than a preset plane, and the preset plane is the liquid level when the lubricant in the internal space is in a static state.
[0010] Optionally, the maintenance hole includes an oil level control hole for controlling the filling amount of the lubricant in the internal space, and the connection between the oil level control hole and the mounting seat hole is located within the preset plane; the preset plane is the liquid level when the lubricant in the internal space is in a static state.
[0011] Optionally, internal teeth are provided on the inner wall of the internal space.
[0012] Another embodiment of the present invention further provides a speed reducer, including a bearing, an output disk, an oil seal, and the above-mentioned reduction housing structure; a port communicating with the internal space is further provided on the reduction housing, the output disk is rotatably installed in the port through the bearing, the bearing and the oil seal are both installed in the mounting seat hole, and the oil seal is used to form a dynamic seal between the reduction housing and the output disk.
[0013] Yet another embodiment of the present invention further provides a vehicle, including the above-mentioned speed reducer.
[0014] In the present utility model, an internal space is provided on the reduction housing. Mounting seat holes for installing bearings and / or oil seals are provided on the inner wall of the internal space. At least one maintenance hole is provided on the reduction housing, and the maintenance hole communicates with the internal space through the mounting seat hole; the maintenance hole directly communicates with the mounting seat hole, thereby avoiding problems such as damage to the main load-bearing structure, low efficiency of adding and discharging oil, and inability to achieve the ventilation function caused by the maintenance hole being opened at the internal teeth of the reduction housing, and also avoiding problems such as low efficiency of adding and discharging oil, incomplete adding and discharging of oil, and inability to achieve the ventilation function caused by the maintenance hole being opened at the output disk installation location. When the maintenance hole is provided at the top of the reduction housing and the maintenance hole communicates with the topmost part of the mounting seat hole, the maintenance hole can be used as a ventilation hole for the internal space. At this time, the maintenance hole can achieve the ventilation function of the internal space, improving the operation reliability of the reducer. When the maintenance hole is provided at the bottom of the reduction housing and the maintenance hole communicates with the bottommost part of the mounting seat hole, the maintenance hole can be used as an oil drain hole for the internal space. At this time, the user can completely drain the lubricant in the internal space through the maintenance hole. When the maintenance hole is provided in the upper middle part of the reduction housing, not lower than the static liquid level of the lubricant in the internal space, and the maintenance hole communicates with the upper middle part of the mounting seat hole, the maintenance hole can be used as an oil filling hole for the internal space. At this time, the user can add lubricant to the internal space through the maintenance hole. When the maintenance hole is provided in the middle of the reduction housing and is flush with the static liquid level of the lubricant in the internal space, and the maintenance hole communicates with the middle part of the mounting seat hole, the maintenance hole can be used as an oil level control hole for the internal space. At this time, the user can precisely control the amount of lubricant added to the internal space through the maintenance hole. Description of the Drawings
[0015] The present utility model will be further described below with reference to the drawings and embodiments.
[0016] Figure 1 Schematic structural diagram of a reduction housing structure provided by an embodiment of the present utility model;
[0017] Figure 2 Partial cross-sectional view of a reduction housing structure provided by an embodiment of the present utility model;
[0018] Figure 3 For Figure 2 Cross-sectional view at A-A in
[0019] Figure 4 Partial cross-sectional view of a reduction housing structure provided by an embodiment of the present utility model;
[0020] Figure 5 Cross-sectional view of a reducer provided by an embodiment of the present utility model.
[0021] The reference signs in the description are as follows:
[0022] 1. Reduction housing; 11. Internal space; 12. Mounting seat hole; 13. Maintenance hole; 131. Groove; 132. Through hole; 133. Vent hole; 134. Oil drain hole; 135. Oil filling hole; 136. Oil level control hole; 14. Internal teeth; 15. Preset plane; 2. Bearing; 3. Oil seal; 4. Output disk. Detailed implementation manners
[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0024] It should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.
[0025] As Figure 1 and Figure 2 shown, a reduction housing structure provided by an embodiment of the present utility model includes a reduction housing 1 provided with an internal space 11, and a mounting seat hole 12 for mounting a bearing 2 and / or an oil seal 3 is provided on the inner wall of the internal space 11; at least one maintenance hole 13 is provided on the reduction housing 1, and the maintenance hole 13 communicates with the internal space 11 through the mounting seat hole 12. It can be understood that the size and position of the maintenance hole 13 can be set according to actual needs, and one end of the maintenance hole 13 away from the internal space 11 communicates with the atmosphere; the mounting seat hole 12 is a clearance hole provided on the inner wall of the internal space 11; a certain amount of lubricant will be filled in the internal space 11 during normal use, and when the reducer is not working, the lubricant will form a static lubricant liquid level under the action of gravity (that is, Figure 4 the preset plane 15 in
[0026] In the present utility model, the reduction housing 1 is provided with an internal space 11. An installation seat hole 12 for installing a bearing 2 and / or an oil seal 3 is provided on the inner wall of the internal space 11. The reduction housing 1 is provided with at least one maintenance hole 13, and the maintenance hole 13 communicates with the internal space 11 through the installation seat hole 12. The maintenance hole 13 directly communicates with the installation seat hole 12, thus avoiding problems such as damage to the main load-bearing structure, low efficiency of oil filling and discharging, and inability to achieve the ventilation function caused by the maintenance hole 13 being opened at the internal teeth 14 of the reduction housing 1. It also avoids problems such as low efficiency of oil filling and discharging, incomplete oil filling and discharging, and inability to achieve the ventilation function caused by the maintenance hole 13 being opened at the installation location of the output disk 4. When the maintenance hole 13 is provided at the top of the reduction housing 1 and the maintenance hole 13 communicates with the topmost part of the installation seat hole 12, the maintenance hole 13 can be used as a ventilation hole 133 for the internal space 11. At this time, the maintenance hole 13 can achieve the ventilation function of the internal space 11, improving the operation reliability of the reducer. When the maintenance hole 13 is provided at the bottom of the reduction housing 1 and the maintenance hole 13 communicates with the bottommost part of the installation seat hole 12, the maintenance hole 13 can be used as an oil drain hole 134 for the internal space 11. At this time, the user can completely drain the lubricant in the internal space 11 through the maintenance hole 13. When the maintenance hole 13 is provided in the upper middle part of the reduction housing 1, not lower than the static liquid level of the lubricant in the internal space 11 (that is, Figure 4 the preset plane 15 in
[0027] ), and the maintenance hole 13 communicates with the upper middle part of the installation seat hole 12, the maintenance hole 13 can be used as an oil filling hole 135 for the internal space 11. At this time, the user can fill the internal space 11 with lubricant through the maintenance hole 13. When the maintenance hole 13 is provided in the middle of the reduction housing 1, flush with the static liquid level of the lubricant in the internal space 11, and the maintenance hole 13 communicates with the middle part of the installation seat hole 12, the maintenance hole 13 can be used as an oil level control hole 136 for the internal space 11. At this time, the user can precisely control the amount of lubricant filled in the internal space 11 through the maintenance hole 13. Figure 2 and Figure 3As shown, the maintenance hole 13 includes a groove 131 and a through hole 132 communicating with the groove 131. One end of the groove 131 away from the through hole 132 communicates with the mounting seat hole 12. Understandably, the groove 131 can be provided on the bottom wall of the mounting seat hole 12, and the opening cross-sectional area of the groove 131 is larger than the cross-sectional area of the through hole 132. When the maintenance hole 13 serves as the oil filling and draining hole 134, the lubricating oil in the internal space 11 and on the bearing 2 is convenient to flow out through the groove 131 and the through hole 132, and also ensures the smoothness of adding lubricating oil into the internal space 11 through the through hole 132 and the groove 131. In this embodiment, the structure of the speed reduction housing is simple and the manufacturing cost is low.
[0028] In one embodiment, as Figure 2 and Figure 3 shown, on a plane perpendicular to the axial direction of the through hole 132, the opening cross-sectional area of the groove 131 gradually decreases from the mounting seat hole 12 towards the through hole 132. Understandably, the opening degree of the groove 131 at the end facing the mounting groove is larger, while the opening degree at the end facing the through hole 132 is smaller, further ensuring the smoothness of the lubricating oil in the internal space 11 flowing out through the groove 131 and the through hole 132.
[0029] In one embodiment, the speed reduction housing structure further includes a plugging member (not shown in the figure) detachably inserted into the maintenance hole 13. Understandably, the plugging member includes but is not limited to a rubber plug, etc. During the normal operation of the speed reducer, the plugging member is inserted into the maintenance hole 13 to block the maintenance hole 13. When the speed reducer is overhauled and maintained, the plugging member is taken out from the maintenance hole 13, and the maintenance hole 13 is in a conducting state.
[0030] In one embodiment, as Figure 1 shown, the maintenance hole 13 includes a ventilation hole 133 for ventilating the internal space 11, and the ventilation hole 133 is provided at the top of the speed reduction housing 1. Understandably, when the maintenance hole 13 serves as the ventilation hole 133, the ventilation hole 133 should be arranged at the highest point of gravity in the circumferential direction of the speed reduction housing 1, and the maintenance hole 13 communicates with the topmost part of the mounting seat hole 12. The opening cross-sectional area of the groove 131 at the end facing the mounting seat hole 12 should be smaller, and the depth of the groove 131 should also be smaller. At the same time, the through hole 132 should be arranged as much as possible in a position shielded by opposing parts such as the bearing 2 and the oil seal 3, reducing the cross-sectional area of the flow through the ventilation hole 133 and extending the flow path of the ventilation hole 133 to prevent the oil in the internal space 11 from overflowing.
[0031] In one embodiment, as Figure 1 and Figure 4As shown, the maintenance hole 13 includes an oil drain hole 134 for draining oil from the internal space 11 and an oil filling hole 135 for filling oil into the internal space 11; the oil drain hole 134 is provided at the bottom of the reduction housing 1; the connection of the oil filling hole 135 with the mounting seat hole 12 is higher than a preset plane 15, and the preset plane 15 is the liquid level when the lubricant in the internal space 11 is in a static state. It can be understood that when the maintenance hole 13 serves as the oil drain hole 134, the oil drain hole 134 should be arranged at the lowest point of the reduction housing 1 in the circumferential direction, and the maintenance hole 13 communicates with the bottommost part of the mounting seat hole 12. The opening cross-sectional area of the groove 131 towards one end of the mounting groove should be larger, and the depth of the groove 131 should also be larger. At the same time, the through hole 132 should be arranged as much as possible in a position not shielded by opposing parts such as the bearing 2 and the oil seal 3, increasing the cross-sectional area of the flow through the maintenance hole 13 and improving the maintenance efficiency of the reduction housing structure.
[0032] The oil filling hole 135 should be provided in the upper middle part of the reduction housing 1, and the position where the oil filling hole 135 communicates with the mounting seat hole 12 should not be lower than the liquid level (i.e., the preset plane 15) when the lubricating oil in the internal space 11 is in a static state. With such a design of the position of the oil filling hole 135, the user can smoothly inject lubricant into the internal space 11 through the oil filling hole 135.
[0033] In one embodiment, as Figure 1 and Figure 4 shown, the maintenance hole 13 includes an oil level control hole 136 for controlling the filling amount of the lubricant in the internal space 11, and the connection of the oil level control hole 136 with the mounting seat hole 12 is located within the preset plane 15; the preset plane 15 is the liquid level when the lubricant in the internal space 11 is in a static state. It can be understood that when the oil level control hole 136 is provided in the middle of the reduction housing 1 and the oil level control hole 136 communicates with the middle of the mounting seat hole 12, the oil level control hole 136 can control the filling amount of the lubricant in the internal space 11; specifically, when the liquid level of the lubricant in the internal space 11 is higher than the oil level control hole 136, the lubricant in the internal space 11 can flow out through the oil level control hole 136 so that the liquid level when the lubricant in the internal space 11 is in a static state is the preset plane 15, and the filling amount of the lubricant in the internal space 11 can be precisely controlled through the oil level control hole 136.
[0034] In one embodiment, as Figure 1 shown, internal teeth 14 are provided on the inner wall of the internal space 11. It can be understood that a circle of the internal teeth 14 is provided on the inner wall of the internal space 11, and the design of the internal teeth 14 improves the integration degree of the reduction housing structure.
[0035] As Figure 5 shown, a speed reducer includes a bearing 2, an output disk 4, an oil seal 3, and the above-described speed reduction housing structure; a port communicating with the internal space 11 is further provided on the speed reduction housing 1, the output disk 4 is rotatably mounted in the port through the bearing 2, both the bearing 2 and the oil seal 3 are mounted in the mounting seat hole 12, and the oil seal 3 is used to form a dynamic seal between the speed reduction housing 1 and the output disk 4. It can be understood that the speed reducer includes, but is not limited to, a cycloidal pinwheel speed reducer, etc., the output disk 4 can play a role in blocking the port, and a connecting shaft is provided on the output disk 4, so that the output disk 4 can be used as the output end of the speed reducer.
[0036] In the present utility model, an internal space 11 is provided on the speed reduction housing 1, a mounting seat hole 12 for mounting the bearing 2 and the oil seal 3 is provided on the inner wall of the internal space 11, at least one maintenance hole 13 is provided on the speed reduction housing 1, and the maintenance hole 13 communicates with the internal space 11 through the mounting seat hole 12; the maintenance hole 13 directly communicates with the mounting seat hole 12, thereby avoiding problems such as damage to the main load-bearing structure, low efficiency of oil addition and discharge, and inability to achieve the ventilation function caused by the maintenance hole 13 being opened at the internal teeth 14 of the speed reduction housing 1, and also avoiding problems such as low efficiency of oil addition and discharge, incomplete oil addition and discharge, and inability to achieve the ventilation function caused by the maintenance hole 13 being opened at the installation location of the output disk 4.
[0037] Another embodiment of the present utility model further provides a vehicle, including the above-described speed reducer.
[0038] The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A deceleration housing structure, characterized in that, It includes a speed reduction housing having an internal space, and mounting seat holes for installing bearings and / or oil seals are provided on the inner wall of the internal space; at least one maintenance hole is provided on the speed reduction housing, and the maintenance hole communicates with the internal space through the mounting seat hole; The maintenance hole includes an oil level control hole for controlling the filling amount of lubricant in the internal space, and the connection between the oil level control hole and the mounting seat hole is located in a preset plane; the preset plane is the liquid level when the lubricant in the internal space is in a static state.
2. The deceleration housing structure according to claim 1, wherein The maintenance hole includes a groove and a through hole communicating with the groove, and one end of the groove away from the through hole communicates with the mounting seat hole.
3. The deceleration housing structure according to claim 2, characterized in that, On a plane perpendicular to the axial direction of the through hole, the opening cross-sectional area of the groove gradually decreases from the mounting seat hole towards the through hole.
4. The deceleration housing structure according to claim 1, characterized in that, The speed reduction housing structure further includes a plugging member detachably inserted into the maintenance hole.
5. The deceleration housing structure according to claim 1, characterized in that, The maintenance hole includes a ventilation hole for ventilating the internal space, and the ventilation hole is provided at the top of the speed reduction housing.
6. The deceleration housing structure according to claim 1, wherein The maintenance hole includes an oil drain hole for draining oil from the internal space and an oil filling hole for filling oil into the internal space; the oil drain hole is provided at the bottom of the speed reduction housing; the connection between the oil filling hole and the mounting seat hole is higher than the preset plane, and the preset plane is the liquid level when the lubricant in the internal space is in a static state.
7. The deceleration housing structure according to claim 1, wherein Internal teeth are provided on the inner wall of the internal space.
8. A speed reducer, characterized in that, It includes a bearing, an output disk, an oil seal, and a speed reduction housing structure according to any one of claims 1 to 7; a port communicating with the internal space is further provided on the speed reduction housing, the output disk is rotatably mounted in the port through the bearing, both the bearing and the oil seal are mounted in the mounting seat hole, and the oil seal is used to form a dynamic seal between the speed reduction housing and the output disk.
9. A vehicle, characterized in that, It includes a speed reducer according to claim 8.