Transmission gear assembly of coal mining machine
By introducing a coolant circulation and automatic grease supply system into the transmission gear assembly of the coal mining machine, the problem of shortened gear life caused by heat has been solved, achieving gear temperature reduction and optimized lubrication condition, extending service life and reducing wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 景小东
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-17
AI Technical Summary
Existing coal mining machine transmission gear assemblies generate heat over long periods of use, leading to a shortened gear lifespan.
It employs heat dissipation and lubrication components, and achieves coolant circulation through the arrangement of gearbox, transmission pipe, connecting pipe and fixed pipe. Combined with the design of storage box, solenoid valve, nozzle and feed pipe, it realizes automatic supply of grease, reduces gear temperature and maintains good lubrication.
It effectively reduces gear temperature, extends service life, and reduces wear through lubrication, ensuring the normal operation of the coal mining machine.
Smart Images

Figure CN224135147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunneling technology, specifically to a transmission gear assembly for a coal mining machine. Background Technology
[0002] Tunneling technology refers to the construction process of excavating tunnels, roadways, or other underground spaces using mechanical or manual means in underground engineering. It is widely used in fields such as mining, railway tunnels, highway tunnels, subway construction, and water conservancy projects.
[0003] Existing coal mining machine transmission gear assemblies generate a lot of heat inside the gears due to prolonged use. This heat accelerates the service life of the gears, leading to premature damage. Utility Model Content
[0004] The purpose of this invention is to provide a transmission gear assembly for a coal mining machine to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mining machine transmission gear assembly, comprising: a heat dissipation assembly and a lubrication assembly, wherein the heat dissipation assembly consists of a gearbox, a transmission pipe, a connecting pipe and a fixing pipe, the transmission pipe is mounted on the surface of the gearbox, the top end of the transmission pipe is fixedly connected to a connecting pipe, and the bottom end of the transmission pipe is fixedly connected to a fixing pipe.
[0006] The lubrication assembly consists of a storage box, a solenoid valve, a nozzle, and a feed pipe. The storage box is installed on the inner top wall of the gearbox, and a feed pipe is installed on one side of the storage box. A solenoid valve is fixedly connected to the bottom of the storage box, and a nozzle is installed at the bottom of the solenoid valve.
[0007] Optionally, a circular groove is provided on one side of the gearbox, and a transmission rod is provided on the inner wall of the circular groove. A transmission wheel is installed on the surface of the transmission rod. The transmission rod can be connected to an external transmission mechanism and can be connected to the main gear through the transmission wheel to provide power for the tunneling operation of the coal mining machine.
[0008] Optionally, a main gear is fixedly connected to the surface of the transmission rod on one side of the transmission wheel. The main gear is located on the inner wall of the gearbox and is used to transmit the power of the transmission mechanism to the cutting drum or other actuators of the coal mining machine.
[0009] Optionally, the transmission wheel is meshed with an external gear, which is located on one side of the main gear. The external gear assists the transmission wheel in transmitting part of the power of the main transmission system to the auxiliary equipment, ensuring the normal operation of the coal mining machine.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. The transmission gear assembly of this coal mining machine, through the setting of gearbox, transmission pipe, connecting pipe and fixed pipe, allows the coolant connected to the external connecting pipe to be transferred to the transmission pipe to drive the internal structure of the gearbox to generate heat during use. The coolant storage tank connected to the external fixed pipe allows the coolant to circulate and carry away most of the heat, effectively reducing the working temperature of the gear and extending the service life of the gear.
[0012] 2. The transmission gear assembly of this coal mining machine, through the setting of a storage box, solenoid valve, nozzle and feed pipe, is used to store grease in the storage box. The feed pipe installed on one side of the storage box can transmit grease into the storage box. The solenoid valve can be connected to an external power supply and opened by the operator through the controller. The nozzle has a small pump that sprays grease into the internal structure of the gearbox to lubricate it and keep it in a good lubrication state at all times, reducing wear. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall appearance of the present utility model;
[0014] Figure 2 This is a schematic cross-sectional view of the gearbox interior of this utility model;
[0015] Figure 3 This is a cross-sectional schematic diagram of the heat dissipation component of this utility model;
[0016] Figure 4 This is a schematic diagram showing the disassembled lubrication component of this utility model.
[0017] In the diagram: 1. Heat dissipation assembly; 101. Gearbox; 102. Transmission pipe; 103. Connecting pipe; 104. Fixing pipe; 2. Lubrication assembly; 201. Storage box; 202. Solenoid valve; 203. Nozzle; 204. Feed pipe; 3. Transmission rod; 4. Transmission wheel; 5. Main gear; 6. External gear. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1-4As shown, the technical solution provided by this utility model is: a coal mining machine transmission gear assembly, including: a heat dissipation assembly 1 and a lubrication assembly 2. The heat dissipation assembly 1 is composed of a gearbox 101, a transmission pipe 102, a connecting pipe 103 and a fixing pipe 104. The transmission pipe 102 is installed on the surface of the gearbox 101. The top end of the transmission pipe 102 is fixedly connected to the connecting pipe 103, and the bottom end of the transmission pipe 102 is fixedly connected to the fixing pipe 104.
[0020] The lubrication assembly 2 consists of a storage box 201, a solenoid valve 202, a nozzle 203, and a feed pipe 204. The storage box 201 is installed on the inner top wall of the gearbox 101, and the feed pipe 204 is installed on one side of the storage box 201. The solenoid valve 202 is fixedly connected to the bottom end of the storage box 201, and the nozzle 203 is installed at the bottom end of the solenoid valve 202. The connecting pipe 103 is connected to the external coolant, which can be transferred to the transmission pipe 102 to drive the internal structure of the gearbox 101 to generate heat. The fixed pipe 104 is connected to the external coolant storage tank, which allows the coolant to circulate. This process generates most of the heat, effectively reducing the working temperature of the gears and extending their service life. The storage box 201 is used to store grease. A feed pipe 204 is installed on one side of the storage box 201 to transfer grease into the storage box 201. The solenoid valve 202 can be connected to an external power source and opened by the operator through a controller. The nozzle 203 has a small pump that sprays grease into the internal structure of the gearbox 101 to lubricate it, keeping it in good lubrication condition and reducing wear.
[0021] A circular groove is provided on one side of the gearbox 101. A transmission rod 3 is provided on the inner wall of the circular groove. A transmission wheel 4 is installed on the surface of the transmission rod 3. The transmission rod 3 can be connected to an external transmission mechanism and can be connected to the main gear 5 through the transmission wheel 4 to provide energy for the tunneling work of the coal mining machine.
[0022] The surface of the transmission rod 3 is fixedly connected to the main gear 5 on one side of the transmission wheel 4. The main gear 5 is located on the inner wall of the gearbox 101. The main gear 5 is used to transmit the power of the transmission mechanism to the cutting drum or other actuators of the coal mining machine.
[0023] The transmission wheel 4 is meshed with an external gear 6, which is located on one side of the main gear 5. The external gear 6 assists the transmission wheel 4 in transmitting part of the power of the main transmission system to the auxiliary equipment, ensuring the normal operation of the coal mining machine.
[0024] In this invention, the working steps of the device are as follows:
[0025] First step: The coolant connected to the external connecting pipe 103 can be transferred to the transmission pipe 102 and drive the heat of the internal structure through the gearbox 101. The coolant storage tank connected to the external connecting pipe 104 can make the coolant circulate and carry away most of the heat, effectively reducing the working temperature of the gear and extending the service life of the gear.
[0026] The second step: The storage box 201 is used to store grease. A feed pipe 204 is installed on one side of the storage box 201 to transport grease into the storage box 201. The solenoid valve 202 can be connected to an external power source and opened by the operator through the controller. The nozzle 203 has a small pump that sprays grease into the internal structure of the gearbox 101 to lubricate it and keep it in a good lubricated state, reducing wear.
[0027] The third step: The transmission rod 3 can be connected to the external transmission mechanism and the transmission wheel 4 can be connected to the main gear 5 to supply power for the tunneling work of the coal mining machine. The main gear 5 is used to transmit the power of the transmission mechanism to the cutting drum or other actuators of the coal mining machine. The external gear 6 assists the transmission wheel 4 to transmit part of the power of the main transmission system to the auxiliary equipment to ensure the normal operation of the coal mining machine.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A drive gear assembly for a coal mining machine, comprising: The heat dissipation assembly (1) and the lubrication assembly (2) are characterized in that the heat dissipation assembly (1) is composed of a gearbox (101), a transmission pipe (102), a connecting pipe (103) and a fixing pipe (104), the transmission pipe (102) is mounted on the surface of the gearbox (101), the top end of the transmission pipe (102) is fixedly connected to the connecting pipe (103), and the bottom end of the transmission pipe (102) is fixedly connected to the fixing pipe (104). The lubrication assembly (2) consists of a storage box (201), a solenoid valve (202), a nozzle (203), and a feed pipe (204). The storage box (201) is installed on the inner top wall of the gearbox (101). The feed pipe (204) is installed on one side of the storage box (201). The solenoid valve (202) is fixedly connected to the bottom of the storage box (201). The nozzle (203) is installed at the bottom of the solenoid valve (202).
2. The shearer drive gear assembly of claim 1, wherein: A circular groove is provided on one side of the gearbox (101), and a transmission rod (3) is provided on the inner wall of the circular groove. A transmission wheel (4) is installed on the surface of the transmission rod (3).
3. A shearer drive gear assembly according to claim 2 wherein: The main gear (5) is fixedly connected to the surface of the transmission rod (3) on one side of the transmission wheel (4), and the main gear (5) is located on the inner wall of the gearbox (101).
4. The shearer drive gear assembly of claim 2, wherein: The transmission wheel (4) is meshed with an external gear (6), which is located on one side of the main gear (5).