High-pressure high-speed gear motor
By adding copper sleeve structure to the gear motor and optimizing the seal design, the existing gear motors have been solved, and efficient and stable operation and extended service life are achieved.
Patent Information
- Application Number
- CN202422513228.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Existing gear motors have low efficiency and poor starting performance, especially small displacement motors have particularly difficulty starting.
A new copper sleeve structure was added to the motor structure to enhance the pressure resistance of the oil seal, and the seal was designed as a sloped structure to achieve floating effect. At the same time, a high-pressure floating seal structure was adopted to improve the sleeve design to improve the starting performance.
It improves the motor's high-voltage and high-speed resistance, improves the starting performance and extends the motor's storage life.
Smart Images
Figure CN223164633U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motors, in particular to a high-pressure and high-speed gear motor. Background Art
[0002] The working principle of a gear motor is to transmit the rotational motion and torque of an electric motor to a working device through gear transmission, thereby realizing power conversion and transmission. The design of a gear motor has the characteristics of simple structure, small volume, and light weight, and is generally used in the case of high rotational speed and low torque. These characteristics make the gear motor an ideal choice in many application scenarios. Whether in industrial production, automobile manufacturing or the field of household appliances, the gear motor plays an indispensable role.
[0003] Motors in the prior art generally have the defects of low efficiency and poor starting performance, especially for small-displacement motors, which are particularly difficult to start. Therefore, it is necessary to develop a new type of high-pressure and high-speed gear motor to overcome the deficiencies of the prior art. Summary of the Utility Model
[0004] Purpose of the utility model: Aiming at the deficiencies and defects of the prior art, the utility model provides a high-pressure and high-speed gear motor, which is used to drive the rotation of a fan wheel and maintain the stable operation of a hydraulic system, and has the characteristics of high pressure resistance, high rotational speed resistance, high efficiency, and good starting performance.
[0005] Technical solution: A high-pressure and high-speed gear motor of the utility model is characterized in that it includes a front end cover, a housing and a rear end cover connected in sequence. A gear pair extending out of the front end cover is arranged in the housing, and a hole retaining ring, a copper sleeve and a pressure-resistant oil seal are arranged outside the gear pair; a shaft sleeve is arranged in the housing, and "3" - shaped seals and "3" - shaped retaining rings are arranged on both sides of the shaft sleeve.
[0006] Among them, a flat key is arranged at the end of the gear pair.
[0007] Among them, the housing and the front end cover are connected by a plurality of fasteners.
[0008] Among them, the housing and the rear end cover are connected by a plurality of positioning pins.
[0009] Among them, an outer seal is arranged between the housing and the front end cover.
[0010] Among them, 8 high-pressure floating oil channels are arranged on the shaft sleeve.
[0011] Among them, the "3" - shaped seal corresponds to the high-pressure oil suction port.
[0012] Beneficial effects: Compared with the prior art, the utility model has the following remarkable advantages: The utility model is widely used in the heat dissipation systems of construction machinery, coal mine equipment, and petroleum equipment, used to drive the rotation of the fan wheel, maintain the stable operation of the hydraulic system, and has the characteristics of high pressure resistance, high rotational speed resistance, high efficiency, and good starting performance. Brief Description of the Drawings
[0013] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0014] Figure 2 It is a three-dimensional sectional structure schematic diagram of the utility model;
[0015] Figure 3 It is a plane sectional structure schematic diagram of the utility model;
[0016] Figure 4 It is a plane structure schematic diagram of the bushing of the utility model;
[0017] Figure 5 It is a sectional structure schematic diagram of the "3" - shaped seal of the utility model;
[0018] In the figure, 1 is a flat key; 2 is a gear pair; 3 is a fastener; 4 is a front end cover; 5 is a housing; 6 is a positioning pin; 7 is a rear end cover; 8 is a hole retaining ring; 9 is a copper bushing; 10 is a pressure-resistant oil seal; 11 is an outer seal; 12 is a "3" - shaped seal; 13 is a bushing; 14 is a "3" - shaped retaining ring; 15 is a high-pressure floating oil passage; 16 is a high-pressure oil suction port. Detailed Embodiment
[0019] The technical solution of the utility model will be further described below in conjunction with the drawings and the detailed embodiment.
[0020] The high-pressure and high-speed gear motor of the utility model includes a front end cover 4, a housing 5, and a rear end cover 7 connected in sequence. A gear pair 2 extending out of the front end cover 4 is arranged inside the housing 5. A hole retaining ring 8, a copper bushing 9, and a pressure-resistant oil seal 10 are arranged outside the gear pair 2. A bushing 13 is arranged inside the housing 5, and a "3" - shaped seal 12 and a "3" - shaped retaining ring 14 are arranged on both sides of the bushing 13. Among them, a flat key 1 is arranged at the end of the gear pair 2. The housing 5 and the front end cover 4 are connected by a plurality of fasteners 3. The housing 5 and the rear end cover 7 are connected by a plurality of positioning pins 6. An outer seal 11 is arranged between the housing 5 and the front end cover 4. The bushing 13 is provided with 8 high-pressure floating oil passages 15. The "3" - shaped seal 12 corresponds to the high-pressure oil suction port 16.
[0021] The utility model has the following improvements: 1. On the basis of the original oil seal of the ordinary motor's driving shaft, a copper sleeve structure is added. Under high-pressure conditions of an ordinary motor, once the back pressure of the oil return is greater than the pressure resistance level of the oil seal, the oil seal opening will turn outwards, resulting in oil leakage of the motor and ultimately the failure of the motor. Based on the original pressure-resistant oil seal, this sleeve structure improves the oil seal to a single-lip pressure-resistant oil seal. After assembly, the copper sleeve fits closely with the inner wall of the single-lip oil seal, playing a role in supporting and fixing the oil seal, and greatly improving the high-pressure resistance performance of the motor. 2. The shaft sleeve adopts a high-pressure floating seal. The original shaft sleeve has no high-pressure floating structure, resulting in poor volumetric efficiency of the motor itself and difficult starting of the motor after long-term storage. Sealing components have to be replaced to ensure the performance of the motor. Now, after optimization, the performance of the shaft sleeve motor has been improved, and long-term storage does not affect the motor performance. 3. The sealing component is designed with a sloped structure on the high-pressure floating side in cooperation with the original "3" - shaped sealing component and the shaft sleeve, which is beneficial for the entry of high-pressure oil and realizes the floating function.
[0022] The utility model is an invention and improvement based on the original motor structure. The internal structure of the motor is the same as that of a conventional motor. The only difference in the assembly process is that a copper sleeve is added to the shaft seal to ensure that the copper sleeve fits tightly with the inner opening of the single-lip oil seal. A copper sleeve structure is added to the outer opening of the motor oil seal to enhance its pressure resistance performance; on the premise of ensuring the motor efficiency, the compression amount of the sealing component is adjusted and optimized to improve its starting performance; on the basis of the original motor shaft sleeve, after optimization and improvement, a high-pressure floating seal is adopted, which also improves the starting performance of the motor and can extend the storage life of the motor.
[0023] The gear motor of the utility model has a novel design, with the advantages of pressure resistance and high-speed resistance. The starting performance of the motor has also achieved a qualitative breakthrough, laying a foundation for the subsequent fan motor field. At the same time, this motor structure also has practical application reference value for other series of gear motors in the future.
Claims
1. A high-pressure and high-speed gear motor, characterized in that: It includes a front end cover (4), a housing (5) and a rear end cover (7) connected in sequence. A gear pair (2) extending out of the front end cover (4) is provided inside the housing (5). An orifice snap ring (8), a copper bushing (9) and a pressure-resistant oil seal (10) are provided outside the gear pair (2); a bushing (13) is provided inside the housing (5), and "3" seals (12) and "3" snap rings (14) are provided on both sides of the bushing (13).
2. The high-pressure and high-speed gear motor according to claim 1, wherein: A flat key (1) is provided at the end of the gear pair (2).
3. The high-pressure and high-speed gear motor according to claim 1, wherein: The housing (5) and the front end cover (4) are connected by a plurality of fasteners (3).
4. The high-pressure and high-speed gear motor according to claim 1, characterized in that: The housing (5) and the rear end cover (7) are connected by a plurality of locating pins (6).
5. The high-pressure and high-speed gear motor according to claim 1, wherein: An outer seal (11) is provided between the housing (5) and the front end cover (4).
6. The high-pressure and high-speed gear motor according to claim 1, characterized in that: Eight high-pressure floating oil channels (15) are provided in the bushing (13).
7. The high-pressure and high-speed gear motor according to claim 1, characterized in that: The "3" seal (12) corresponds to the high-pressure oil suction port (16).