Speed reducer gear oil circulation control system

Abstract

The utility model provides a speed reducer gear oil circulation control system, which comprises a speed reducer connected between a rear axle housing and a wheel assembly, the speed reducer comprises a gear box and an oil storage tank, the bottom of the gear box is provided with an oil outlet, an oil passing hole communicated with the oil storage tank is arranged above the oil outlet, and the oil passing hole is communicated with the oil storage tank. The control system further comprises an oil pump and a controller, one end of the oil pump is connected with the filter, and the other end of the oil pump is connected with an oil filling port in the top of the oil storage tank. An oil outlet of the filter is connected with an oil quality sensor, and the controller is electrically connected with the oil quality sensor and the oil pump and used for controlling the oil pump to operate according to signals transmitted by the oil quality sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a gear oil circulation control system for a speed reducer. Background Technique

[0002] In the field of mining dump trucks, an electric wheel speed reducer includes a planetary gearbox and an oil storage tank for storing gear oil. During the operation of the electric wheel speed reducer, the planetary gears in the speed reducer need to be lubricated by the gear oil. During the lubrication process, impurities generated by the wear of the planetary gears will contaminate the gear oil, resulting in a relatively short service life of the gear oil. At the same time, it is difficult to accurately grasp the time for replacing the gear oil, which may easily damage the planetary gears, affect the service life of the gears, and increase the difficulty and cost of maintenance.

[0003] In addition, in the field of mining dump trucks, the planetary gearbox and the oil storage tank of the electric wheel speed reducer are generally arranged inside the rear axle housing. Whenever the gear oil needs to be replaced, maintenance personnel have to enter the inside of the rear axle housing through the narrow rear axle door for operation, which greatly increases the complexity and danger of the operation. Content of the Utility Model

[0004] To solve the above problems in the prior art, the utility model provides a gear oil circulation control system for a speed reducer, which includes a speed reducer connected between the rear axle housing and the wheel assembly. The speed reducer includes: a gearbox and an oil storage tank. A drain port is provided at the bottom of the gearbox, and an oil passing hole communicating with the oil storage tank is provided above the drain port. The drain port is connected to a filter through a stop valve. The control system further includes an oil pump and a controller. One end of the oil pump is connected to the filter, and the other end is connected to the fueling port at the top of the oil storage tank. An oil quality sensor is connected to the oil outlet of the filter. The controller is electrically connected to the oil quality sensor and the oil pump respectively, and is used to control the operation of the oil pump according to the signal transmitted by the oil quality sensor.

[0005] Further, it further includes a quick filling port communicating with the fueling port, and the quick filling port is arranged on the outer side wall of the rear axle housing.

[0006] Further, it further includes an oil drain port arranged on the outer side wall of the rear axle housing. A tee joint is connected between the drain port and the stop valve. One oil port of the tee joint communicates with one end of the oil drain port, and a plug is connected to the other end of the oil drain port.

[0007] Further, a check valve is connected between the oil pump and the fueling port to prevent the gear oil from flowing back to the oil pump.

[0008] Further, it further includes a human-machine interaction device, and the human-machine interaction device is electrically connected to the controller and is used to display the system operation status information sent by the controller.

[0009] Further, it also includes a GPS, which includes a GPS controller and a GPS antenna. The GPS controller receives the system operation status information sent by the controller and realizes remote data transmission through the GPS antenna.

[0010] Further, it also includes a remote terminal, which is connected to the GPS antenna through a wireless network and is used to remotely display the system operation status information sent by the controller.

[0011] Compared with the prior art, the present utility model mainly has the following advantages:

[0012] In the gear oil circulation control system of the speed reducer of the present utility model, the globe valve and the filter reduce the pollution of the gear oil caused by impurities generated by the wear of the planetary gears, and delay the service life of the gear oil; at the same time, through the quick filling port and the oil drain port arranged outside the rear axle housing, the problems of difficult gear oil replacement and narrow operation space are solved, and the efficiency of gear oil replacement is improved.

[0013] In the gear oil circulation control system of the speed reducer of the present utility model, the oil quality sensor, the controller and the human-machine interaction device can continuously monitor the gear oil quality in real time online, remind the maintenance personnel to replace the gear oil in a timely manner according to the fixed time and conditions, reduce the risk of damage to the teeth of the planetary gears, and save the maintenance cost of the gear oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the gear oil circulation system of the speed reducer of the present utility model;

[0015] Figure 2 is a schematic diagram of the gear oil circulation system of the speed reducer of the present utility model;

[0016] Figure 3 is a structural block diagram of the gear oil circulation system of the speed reducer of the present utility model;

[0017] In the figure: 1, gearbox; 2, oil passage hole; 3, oil storage tank; 4, filling port; 5, quick filling hose; 6, oil drain port; 7, oil drain hose; 8, oil discharge port; 9, plug; 10, globe valve; 11, hose I; 12, filter; 13, oil quality sensor; 14, hose II; 15, oil pump; 16, hose III; 17, check valve; 18, quick filling port; 19, human-machine interaction device; 20, controller; 21, GPS; 22, remote terminal; 23, rear axle housing; 24, rear axle door; 25, wheel assembly; 26, speed reducer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0019] As Figure 1 , Figure 2 shown, the present utility model provides a speed reducer gear oil circulation control system, which includes an electric wheel speed reducer 26. Both ends of the speed reducer 26 are respectively bolted to the rear axle housing 23 and the wheel assembly 25. The speed reducer 26 includes: a gearbox 1 with planetary gears and an oil storage tank 3 for storing gear oil. A drain port 6 is provided at the bottom of the gearbox 1, and an oil passage hole 2 is provided above the drain port 6. The oil storage tank 3 is communicated with the gearbox 1 through the oil passage hole 2. The drain port 6 is communicated with one end of a stop valve 10 through a drain hose 7, and the other end of the stop valve 10 is connected with a filter 12 through a hose I 11. The stop valve 10 is normally open in the working state to ensure the smooth flow of gear oil. The filter 12 can filter out impurities generated by the wear of the planetary gears and improve the quality of the gear oil. The control system further includes an oil pump 15. One end of the oil pump 15 is connected with the filter 12 through a hose II 14, and the other end is connected with a filling port 4 at the top of the oil storage tank 3 through a hose III 16. The speed reducer gear oil circulation control system of this embodiment reduces the pollution of the gear oil caused by impurities generated by the wear of the planetary gears through the stop valve 10 and the filter 12, and extends the service life of the gear oil.

[0020] In some embodiments, the speed reducer gear oil circulation control system further includes a quick filling port 18 communicated with the filling port 4, and the quick filling port 18 is arranged on the side wall of the rear axle housing 23. There are various specific setting methods for the quick filling port 18. For example, a through hole is provided on the drum of the rear axle housing 23. One end of the quick filling port 18 is arranged outside the drum of the rear axle housing 23, and the other end extends to the inside of the drum of the rear axle housing 23 through the through hole and is communicated with the filling port 4 at the top of the oil storage tank 3 through a quick filling hose 5. Preferably, the filling port 4 is connected with a tee joint, and the other two joints of the tee joint are respectively communicated with the quick filling hose 5 and the oil pump 15.

[0021] In addition, the speed reducer gear oil circulation control system further includes an oil drain port 8 arranged on the outer side surface of the rear axle housing 23. A tee joint is connected between the drain port 6 and the stop valve 10. One oil port of the tee joint passes through the drum of the rear axle housing 23 and is communicated with one end of the oil drain port 8, and the other end of the oil drain port 8 is connected with a plug 9. In the working state, the plug 9 can prevent the leakage of gear oil.

[0022] The quick filling port 18 and the oil drain port 8 of the reducer gear oil circulation control system of this embodiment are both located outside the rear axle housing 23. The space outside the rear axle housing 23 is sufficient and the height is appropriate, which is convenient for maintenance personnel to operate. It solves the problems of difficult gear oil replacement and narrow operation space, and improves the efficiency of gear oil replacement. It also prevents maintenance personnel from entering the interior of the rear axle housing 23 through the narrow rear axle door 24 for operation.

[0023] In some embodiments, a check valve 17 is connected between the oil pump 15 and the filling port 4. One end of the oil pump 15 is connected to the filter 12 through the hose II 14, and the other end is connected to the check valve 17 through the hose III 16. The other end of the check valve 17 is connected to the filling port 4 through a three-way joint. When quickly filling the gear oil, the check valve 17 can allow the gear oil to flow in the direction of the oil pump 15.

[0024] As Figure 3 shown, in some embodiments, the reducer gear oil circulation control system further includes a controller 20. The oil outlet of the filter 12 is respectively connected to the oil pump 15 and the oil quality sensor 13 through a three-way joint. The oil quality sensor 13 is connected to the controller 20 through a wire harness, and the controller 20 is connected to the oil pump 15 through a wire harness.

[0025] When the mining dump truck is running normally, the stop valve 10 is in the normally open state, the oil pump 15 is in the start (high level) state, and the gear oil in the gearbox 1 is filtered by the filter 12 and supplied to the oil storage tank 3. The oil quality sensor 13 monitors the impurities, moisture content, oil temperature and element content in the gear oil filtered by the filter 12 in real time, converts them into analog electrical signals and transmits them to the controller 20. After receiving the real-time analog electrical signals, the controller 20 converts them into digital electrical signals and sends standby / start commands to the oil pump 15. The oil pump 15 is in the start (high level) state under normal working conditions, stops after receiving the standby command (low level) issued by the controller 20, and sends a feedback signal to the controller 20; starts or continues to maintain the working state after receiving the start command (high level) issued by the controller 20, and also sends a feedback signal to the controller 20.

[0026] When the oil quality sensor 13 monitors that the impurities, moisture content, oil temperature and element content in the gear oil exceed the preset threshold, the controller 20 sends a standby command (low level) to the oil pump 15. At this time, the maintenance personnel can rotate and close the stop valve 10, remove the plug 9 with an inner hexagon wrench, so that the gear oil flows out from the oil drain port 6 and is discharged through the oil drain port 8 to the recovery device. Then connect the gear oil quick filling gun to the quick filling port 18, and the gear oil flows through the filling port 6 to the oil storage tank 3 to complete the gear oil replacement.

[0027] It should be noted that at the beginning of refueling, the cut-off valve 10 can be closed and the plug 9 can be removed, and the electric wheel reducer 26 can be flushed with clean gear oil. And during this process, due to the setting of the one-way valve 17, when the gear oil is quickly filled, the gear oil is restricted from flowing in the direction of the oil pump 15.

[0028] In some embodiments, the reducer gear oil circulation control system further includes a human-machine interaction device 19. The human-machine interaction device 19 is arranged on the cab instrument panel and performs data interaction with the controller 20 through the CAN bus. It is used to receive the alarm information and the status of the circulation control system sent by the controller 20, and perform code alarm prompts and display the status of the circulation control system on the main interface of the human-machine interaction device 19. When the controller 20 sends a standby instruction, an alarm code appears on the main interface of the human-machine interaction device 19 to remind the maintenance personnel to check the situation and change the gear oil. When the code T101 appears, it means that the impurities in the gear oil exceed the set threshold; when the code T102 appears, it means that the moisture content in the gear oil exceeds the set threshold; when the code T103 appears, it means that the oil temperature of the gear oil exceeds the set threshold; when the code T104 appears, it means that the element content of iron, chromium, and silicon in the gear oil exceeds the set threshold; when the code T105 appears, it means that the gear oil replacement period exceeds the set threshold. When the controller 20 receives the feedback signal, the circulation status information is displayed on the main interface of the human-machine interaction device 19 to remind the maintenance personnel to handle it. In addition, when the alarm codes T103 and T104 appear, the maintenance personnel are also required to check the wear condition of the planetary gear teeth.

[0029] In some embodiments, the reducer gear oil circulation control system further includes a GPS 21 and a remote terminal 22. The GPS 21 includes a GPS controller and a GPS antenna. The GPS controller receives the alarm information and the status of the circulation control system sent by the controller 20, and realizes remote data transmission with the remote terminal 22 through the GPS antenna via a wireless network. The remote terminal 22 can log in to the intelligent operation and maintenance system to remotely view the alarm information and the status of the circulation control system.

[0030] Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A speed reducer gear oil circulation control system, characterized in that: The invention comprises a reducer (26) connected between a rear axle housing (23) and a wheel assembly (25), the reducer (26) comprising: a gear box (1) and an oil storage tank (3), the gear box (1) having an oil drain port (6) at the bottom, an oil hole (2) communicating with the oil storage tank (3) above the oil drain port (6), the oil drain port (6) being connected to a filter (12) via a stop valve (10), the control system further comprising an oil pump (15) and a controller (20), one end of the oil pump (15) being connected to the filter (12), and the other end being connected to a refueling port (4) at the top of the oil storage tank (3); the oil outlet of the filter (12) being connected to an oil quality sensor (13), the controller (20) being electrically connected to the oil quality sensor (13) and the oil pump (15) respectively, and being used for controlling the operation of the oil pump (15) according to a signal transmitted by the oil quality sensor (13).

2. The reducer gear oil circulation control system according to claim 1, characterized in that: It also includes a quick filling port (18) connected to the fuel filling port (4), and the quick filling port (18) is arranged on the outer side wall of the rear axle housing (23).

3. The reducer gear oil circulation control system according to claim 2, characterized in that: It also includes an oil drain port (8) provided on the outer side wall of the rear axle housing (23), a three-way joint being connected between the oil drain port (6) and the stop valve (10), an oil port of the three-way joint being connected to one end of the oil drain port (8), and a screw plug (9) being connected to the other end of the oil drain port (8).

4. The reducer gear oil circulation control system according to claim 1, characterized in that: A one-way valve (17) is connected between the oil pump (15) and the oil filling port (4) to prevent gear oil from flowing back to the oil pump (15).

5. The speed reducer gear oil circulation control system according to claim 1, characterized in that: It also includes a human-computer interaction device (19), which is electrically connected to the controller (20) and is used to display system operation status information sent by the controller (20).

6. The speed reducer gear oil circulation control system according to claim 5, characterized in that: It also includes a GPS (21), wherein the GPS (21) includes a GPS controller and a GPS antenna, wherein the GPS controller receives system operation status information sent by the controller (20) and implements remote data transmission through the GPS antenna.

7. The speed reducer gear oil circulation control system according to claim 6, characterized in that: It also includes a remote terminal (22), which is connected to the GPS antenna via a wireless network and is used to remotely display system operation status information sent by the controller (20).

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