Self-lubricating structure of speed reducer
By introducing the centrifugal pump principle of volute and churning gear into the reducer, a simple and low-cost active lubrication system is constructed, which solves the complex and high-cost lubrication problem in the existing technology and achieves reliable lubrication effect and extended service life.
Patent Information
- Application Number
- CN202520095834.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing active lubrication systems for speed reducers are complex and costly, lacking simple, reliable, and low-cost lubrication solutions.
It adopts a volute structure and an oil-stirring gear combined with the centrifugal pump principle. The lubrication circuit is integrated into the housing, and the reducer gear is used as the rotary drive component to achieve simple and low-cost active lubrication.
It achieves a simple and reliable active lubrication effect, reduces system complexity and cost, while ensuring lubrication effect and extending the service life of the reducer.
Smart Images
Figure CN223536914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of speed reducers, and in particular to a self-lubricating structure for speed reducers. Background Technology
[0002] The lubrication condition of gears and bearings in an automotive transmission under operating conditions not only affects power transmission efficiency but also the transmission's lifespan. Active lubrication is an effective way to improve lubrication and ensure a good lubrication environment. Common active lubrication methods integrate mechanical or electronic pumps into the transmission system as auxiliary systems. However, since these auxiliary systems themselves are also quite complex, the increase in cost, while reducing the overall system reliability, is also significant.
[0003] Therefore, how to achieve simple, reliable, and low-cost active lubrication of speed reducers is a problem worth considering. Utility Model Content
[0004] In view of the shortcomings of the existing technology, this utility model provides a self-lubricating structure for speed reducers, so as to solve the technical problem of the lack of simple, reliable and low-cost active lubrication speed reducers in related technologies.
[0005] This utility model provides a self-lubricating structure for a speed reducer, including a volute, an oil stirring gear, a first solenoid valve, a second solenoid valve, a lubricating oil circuit, and an integrated oil circuit in the housing;
[0006] The volute has a recess in the middle that matches the oil stirring gear, and two ends of the volute have extended first and second oil outlets respectively. One end of the lubricating oil circuit passes through the first solenoid valve and connects to the first oil outlet, and the other end passes through the housing integrated oil circuit and the second solenoid valve in sequence and connects to the second oil outlet.
[0007] Optionally, the opening sizes of the first oil outlet and the second oil outlet are matched to the lubrication oil passage.
[0008] Compared with the prior art, the present invention has the following beneficial effects:
[0009] An active lubrication system that integrates the lubrication circuit into the housing uses a reducer gear as a rotary drive component and the principle of a centrifugal pump. It adds a volute structure and constructs an active lubrication system through the oil circuit on the housing, which can achieve simple and low-cost active lubrication. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0012] Explanation of icon numbers:
[0013] 1. Volute housing; 2. Oil stirring gear; 3. First solenoid valve; 4. Second solenoid valve; 5. Lubricating oil circuit; 6. Housing integrated oil circuit; 7. First oil outlet; 8. Second oil outlet.
[0014] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.
[0016] See Figure 1 , Figure 2 This utility model provides a self-lubricating structure for a speed reducer, including a volute 1, an oil stirring gear 2, a first solenoid valve 3, a second solenoid valve 4, a lubricating oil circuit 5, and a housing integrated oil circuit 6;
[0017] The volute 1 has a recess in the middle that matches the oil stirring gear 2, and its two ends are respectively provided with an extended first oil outlet 7 and a second oil outlet 8. One end of the lubricating oil circuit 5 passes through the first solenoid valve 3 and connects to the first oil outlet 7, and the other end passes through the housing integrated oil circuit 6 and the second solenoid valve 4 in sequence and connects to the second oil outlet 8.
[0018] In this embodiment, the principle of centrifugal pump is used to add a volute 1 structure that matches the oil stirring gear 2 to the active lubrication system in the reducer. The lubricating oil enters the volute 1 from the bottom oil inlet area of the oil stirring gear 2 (the gap between the oil stirring gear 2 and the volute 1 and between the gear teeth). Driven by the high-speed rotating gear, the oil rotates and accelerates. When it moves to the outlet position, it will be thrown out under the action of centrifugal force.
[0019] As shown in Figure 2, when the oil stirring gear 2 rotates clockwise, the first solenoid valve 3 opens and the second solenoid valve 4 closes. Due to the rotation of the oil stirring gear 2, a tangential velocity is generated, and the lubricating oil is thrown into the first oil outlet 7 and enters the housing integrated oil circuit 6 through the lubricating oil circuit 5 to achieve the purpose of pumping oil. Conversely, when the gear rotates counterclockwise, the first solenoid valve 3 closes and the second solenoid valve 4 opens. The lubricating oil is also thrown into the second oil outlet 8 and enters the housing integrated oil circuit 6 through the lubricating oil circuit 5. Finally, the lubricating oil is distributed to various required locations through the housing integrated oil circuit 6 to achieve the effect of active lubrication in both forward and reverse rotation. Since the internal pipelines of the reducer are interconnected, only the oil stirring gear 2 is constantly rotating, and there is always oil at the bottom of the reducer housing.
[0020] In another embodiment, the opening sizes of the first oil outlet 7 and the second oil outlet 8 are matched with those of the lubrication oil passage 5.
[0021] The sizes of the first oil outlet 7 and the second oil outlet 8 are adapted to the lubrication oil circuit 5 to prevent the lubricating oil from leaking out midway.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A self-lubricating structure for a speed reducer, characterized in that, It includes a volute, an oil stirring gear, a first solenoid valve, a second solenoid valve, a lubrication oil passage, and a housing integrated oil passage; The volute has a recess in the middle that matches the oil stirring gear, and two ends of the volute have extended first and second oil outlets respectively. One end of the lubricating oil circuit passes through the first solenoid valve and connects to the first oil outlet, and the other end passes through the housing integrated oil circuit and the second solenoid valve in sequence and connects to the second oil outlet.
2. The self-lubricating structure for the reducer as described in claim 1, characterized in that, This includes ensuring that the opening sizes of the first and second oil outlets match the lubrication oil passage.