Shaft end oil pump adaptive to low rotating speed
By adding a gearbox and making a tight connection between the pump body and the low-speed shaft, the problem of insufficient oil pump flow under low-speed conditions was solved, and the lubrication effect was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO DONLY NEW ENERGY EQUIP
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-26
AI Technical Summary
In the speed reducer, the oil pump flow rate at low speeds cannot meet the design standards, resulting in insufficient lubrication.
A gearbox is added between the pump body and the low-speed shaft, and a tight connection between the pump body and the gearbox is achieved through mounting bosses and torque transmission interfaces. Different flow rates and speed ratios are configured to adapt to low-speed operating conditions.
The design standard for oil pump flow rate under low speed conditions has been achieved, ensuring lubrication effect.
Smart Images
Figure CN224413862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of speed reducers and related technologies, and in particular to a shaft-end oil pump adapted to low speed. Background Technology
[0002] Currently, in the application of speed reducers, it is often encountered that the speed reducer needs to be lubricated by a shaft-end oil pump. However, due to structural reasons, some gearboxes can only install the shaft-end oil pump on the low-speed shaft, and the oil pump flow rate under low-speed conditions does not meet the design standard. Utility Model Content
[0003] In view of this, and to solve the above problems, the purpose of this utility model is to provide a shaft-end oil pump adapted to low speeds, comprising:
[0004] Pump body, gearbox;
[0005] The pump body has an installation interface on one end face, and a torque transmission interface is provided in the middle of the installation interface.
[0006] The gearbox has a mounting boss on one end face, and a torque transmission boss is provided in the middle of the mounting boss.
[0007] The mounting boss is mounted on the mounting interface, and the torque transmission boss is mounted on the torque transmission interface.
[0008] In the aforementioned shaft-end oil pump adapted to low speed, one end of the pump body is recessed inward to form the mounting interface.
[0009] In the aforementioned shaft-end oil pump adapted to low speed, the bottom edge of the mounting interface is chamfered.
[0010] In the aforementioned shaft-end oil pump adapted to low speed, the edge of the mounting boss at the end away from the gearbox is chamfered.
[0011] In the aforementioned shaft-end oil pump adapted to low speed, the bottom edge of the torque transmission interface is chamfered.
[0012] In the aforementioned shaft-end oil pump adapted to low speeds, the end of the torsion transmission boss away from the gearbox is chamfered.
[0013] In the aforementioned shaft-end oil pump adapted to low speed, a low-speed shaft is installed at the end of the gearbox away from the pump body.
[0014] The positive effects of the above technical solution compared with the existing technology are:
[0015] By applying this utility model, a shaft-end oil pump adapted to low speed is provided. A gearbox is added between the low-speed shaft and the pump body, so that the oil pump consists of a pump body and a speed-increasing gearbox. The mounting boss is installed on the mounting interface, and the torque transmission boss is installed on the torque transmission interface, so that the pump body has an interface for mounting and transmitting torque. The size of the pump body can be configured according to different flow rates, and different speed ratios can be configured to achieve the corresponding speed of the oil pump, and finally achieve the design standard. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a shaft-end oil pump adapted to low speed according to the present invention.
[0017] Figure 2 This is a schematic diagram of the pump body in this utility model.
[0018] Figure 3 This is a schematic diagram of the gearbox in this utility model.
[0019] 1. Pump body; 2. Gearbox; 3. Mounting interface; 4. Torque transmission interface; 5. Mounting boss; 6. Torque transmission boss. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0021] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0022] like Figures 1 to 3 As shown, a preferred embodiment of a shaft-end oil pump adapted to low speed is illustrated, which includes: a pump body 1 and a gearbox 2.
[0023] The pump body 1 has an installation interface 3 on one end face, and a torque transmission interface 4 in the middle of the installation interface 3; the gearbox 2 has an installation boss 5 on one end face, and a torque transmission boss 6 in the middle of the installation boss 5; the installation boss 5 is installed on the installation interface 3, and the torque transmission boss 6 is installed on the torque transmission interface 4.
[0024] In actual use, a gearbox 2 is added between the low-speed shaft and the pump body 1, so that the oil pump consists of the pump body 1 and the speed-increasing gearbox 2. The mounting boss 5 is installed on the mounting interface 3, and the torque transmission boss 6 is installed on the torque transmission interface 4, so that the pump body 1 has an interface for mounting and transmitting torque. The size of the pump body 1 can be configured according to different flow rates, and different speed ratios can be configured to achieve the corresponding speed of the oil pump.
[0025] Based on the above, this utility model also has the following embodiments:
[0026] Furthermore, a shaft-end oil pump adapted for low speeds is provided, wherein one end of the pump body 1 is recessed inward to form a mounting interface 3. Specifically, this allows the gearbox 2 to be inserted into the pump body 1.
[0027] Furthermore, a shaft-end oil pump adapted to low speeds is provided, wherein the bottom edge of the mounting interface 3 is chamfered.
[0028] Furthermore, a shaft-end oil pump adapted to low speeds is provided, wherein the edge of the mounting boss 5 at the end away from the gearbox 2 is chamfered. Specifically, chamfers are provided on the mounting interface 3 and the mounting boss 5 to ensure a tighter fit between the two.
[0029] Furthermore, a shaft-end oil pump adapted to low speeds is provided, wherein the bottom edge of the torque transmission interface 4 is chamfered.
[0030] Furthermore, a shaft-end oil pump adapted to low speeds is provided, wherein the end of the torque transmission boss 6 away from the gearbox 2 is chamfered. Specifically, chamfers are provided on the torque transmission boss 6 and the torque transmission interface 4, so that the torque transmission boss 6 and the torque transmission interface 4 are installed more tightly, thereby making the installation of the pump body 1 and the gearbox 2 more tightly.
[0031] Furthermore, a shaft-end oil pump adapted to low speed is provided, wherein a low-speed shaft is installed at the end of the gearbox 2 away from the pump body 1.
[0032] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A shaft-end oil pump adapted to low speeds, characterized in that, include: Pump body, gearbox; The pump body has an installation interface on one end face, and a torque transmission interface is provided in the middle of the installation interface. The gearbox has a mounting boss on one end face, and a torque transmission boss is provided in the middle of the mounting boss; the mounting boss is installed on the mounting interface, and the torque transmission boss is installed on the torque transmission interface.
2. The shaft-end oil pump adapted to low speed according to claim 1, characterized in that, One end of the pump body is recessed inward to form the mounting interface.
3. A shaft-end oil pump adapted to low speed according to claim 1, characterized in that, The bottom edge of the mounting interface is chamfered.
4. A shaft-end oil pump adapted to low speed according to claim 1, characterized in that, The edge of the mounting boss at the end furthest from the gearbox is chamfered.
5. A shaft-end oil pump adapted to low speed according to claim 1, characterized in that, The bottom edge of the torque transmission interface is chamfered.
6. A shaft-end oil pump adapted to low speed according to claim 1, characterized in that, The end of the torsion transmission boss away from the gearbox is chamfered.
7. A shaft-end oil pump adapted to low speed according to claim 1, characterized in that, The low-speed shaft is installed at the end of the gearbox away from the pump body.