A comprehensive test system for hydraulic motors and brakes

Abstract

This invention discloses a comprehensive testing system for hydraulic motors and brakes, including a hydraulic station and a test bench. A load hydraulic motor and a brake testing hydraulic motor are mounted on the test bench, and the brake under test and the test hydraulic motor are also mounted on the test bench. The load hydraulic motor serves as a simulated load for the test hydraulic motor, enabling performance testing of the test hydraulic motor. The test brake is used to brake the brake testing hydraulic motor, enabling performance testing of the test brake. The test brake, the test hydraulic motor, the load hydraulic motor, and the brake testing hydraulic motor are all supplied with the required hydraulic power through the hydraulic station. This invention solves the problems that hydraulic motor performance testing and brake performance testing cannot be performed simultaneously in the same location and cannot share oil circuits, significantly saving hydraulic oil, testing time, and space occupied by testing equipment, thus improving testing efficiency.

Description

Technical Field

[0001] This invention relates to performance testing systems, specifically to a comprehensive testing system for hydraulic motors and brakes. Background Technology

[0002] Hydraulic winches use hydraulic motors as their drive source, converting hydraulic energy into mechanical energy output by the winch. Multiple disc brakes are arranged at the connection point between the hydraulic motor and the winch to control the start and stop of the hydraulic winch. After manufacturing, the hydraulic motor and brakes must be tested for their performance indicators under specified pressure, speed, and other operating conditions. This requires testing on a test bench. Existing test benches for hydraulic motors and brakes are generally designed and arranged as two independent testing devices. Testing of both cannot be conducted simultaneously in the same location. The manufacturing and maintenance costs of the test benches are too high, they occupy too much space, and the manpower and material costs required for testing are also high. Furthermore, the two cannot share oil circuits, which is not conducive to saving hydraulic oil resources. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a comprehensive testing system that can simultaneously test the performance of hydraulic motors and brakes in the same location, thereby reducing the testing time for motors and brakes and the space occupied by the testing equipment.

[0004] Technical Solution: This invention provides a comprehensive testing system for hydraulic motors and brakes, including a hydraulic station and a test bench. A load hydraulic motor and a brake testing hydraulic motor are mounted on the test bench. The brake under test and the brake testing hydraulic motor are also mounted on the test bench. The load hydraulic motor serves as a simulated load for the brake under test, enabling performance testing of the brake under test. The brake under test is used to brake the brake testing hydraulic motor, thus enabling performance testing of the brake under test. The brake under test, the brake testing hydraulic motor, the load hydraulic motor, and the brake testing hydraulic motor are all supplied with the required hydraulic power through the hydraulic station.

[0005] Furthermore, the hydraulic station includes a main oil pump, a main oil tank, a replenishing oil tank, a replenishing oil pump, and a control oil pump;

[0006] The main oil pump delivers hydraulic oil from the main oil tank. After passing through the electromagnetic proportional throttle valve, the hydraulic oil is divided into two paths: one path is delivered to the hydraulic motor under test, and the other path is delivered to the hydraulic motor used for brake testing. The speed of the hydraulic motor under test is adjusted by the electromagnetic proportional throttle valve.

[0007] The replenishing pump delivers hydraulic oil from the replenishing oil tank to the load hydraulic motor. A torque meter is installed on the test bench. The output ends of the test hydraulic motor and the load hydraulic motor are respectively connected to the two ends of the torque meter. The load hydraulic motor creates resistance on the output shaft of the test hydraulic motor, forming a simulated load on the test hydraulic motor, thereby realizing the performance test of the test hydraulic motor; the torque meter measures the output torque of the hydraulic motor.

[0008] The control oil pump delivers hydraulic oil from the replenishment tank to the brake under test via an electromagnetic reversing valve. By adjusting the electromagnetic reversing valve, the brake under test generates braking force on the hydraulic motor used for brake testing, thereby realizing the performance test of the brake under test.

[0009] Furthermore, the hydraulic oil delivered by the main oil pump is divided into two paths after passing through an electromagnetic proportional throttle valve and an electro-hydraulic directional valve. One path is delivered to the hydraulic motor under test, and the other path is delivered to the hydraulic motor used for brake testing. Pressure is taken from the oil supply line of the brake under test, and the pressure taking line is connected to the control port of the electro-hydraulic directional valve, which assists the electro-hydraulic directional valve in controlling the direction of the hydraulic motor under test and the hydraulic motor used for brake testing. Furthermore, the replenishing oil pump delivers hydraulic oil from the replenishing oil tank to the load hydraulic motor through an electromagnetic proportional relief valve. The electromagnetic proportional relief valve is used to steplessly adjust the speed and load of the load hydraulic motor.

[0010] Furthermore, the hydraulic system of the hydraulic station is equipped with flow meters, thermometers and pressure gauges at multiple points as needed.

[0011] Furthermore, a level gauge is installed on the main oil tank to monitor the hydraulic oil level in the main oil tank.

[0012] Furthermore, oil filters are installed in both the main oil pump supply line and the control oil pump supply line.

[0013] Furthermore, the integrated testing system also includes a high-temperature oil tank. When the system hydraulic oil temperature is too low, the high-temperature hydraulic oil in the high-temperature oil tank is replenished into the hydraulic system through the main oil pump to regulate the system hydraulic oil temperature.

[0014] Furthermore, a cooling circulation pump and a cooler are respectively installed on the main oil tank and the replenishment oil tank. The cooling circulation pump draws oil from the oil tank, cools it through the cooler, and then returns it to the corresponding oil tank.

[0015] Furthermore, a cooler is also provided in the oil circuit that supplies the hydraulic motor to the load by the replenishing oil pump.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0017] This invention combines a hydraulic motor testing system and a brake testing system into one. The load hydraulic motor is used as a simulated load to test the hydraulic motor under test. The hydraulic motor under test and the brake under test share a set of hydraulic stations, which solves the problems that the two tests cannot be carried out at the same time and in the same place and cannot share oil circuits. This can greatly save hydraulic oil, test time and space occupied by test equipment, and improve test efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the integrated testing system provided in the embodiments of this application;

[0020] Reference numerals: 1, Main oil pump; 2, Motor; 3, Oil filter; 4, High-temperature oil tank; 5, Cooling circulation pump; 6, Heater; 7, Main oil tank; 8, Electromagnetic proportional relief valve; 9, Flow meter; 10, Electromagnetic proportional throttle valve; 11, Electro-hydraulic directional valve; 12, Electromagnetic directional valve; 13, Thermometer; 14, Pressure gauge; 15, Level gauge; 16, Torque meter; 17, Cooler; 18, Make-up oil tank; 19, Make-up oil pump; 20, Control oil pump; 21, Brake under test; 22, Hydraulic motor under test; 23, Load hydraulic motor; 24, Hydraulic motor for brake test. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This application provides a comprehensive testing system for hydraulic motors and brakes. The system includes a hydraulic power station and a test bench. The hydraulic power station includes a main oil pump 1, a high-temperature oil tank 4, a main oil tank 7, a replenishing oil tank 18, a replenishing oil pump 19, and a control oil pump 20. A load hydraulic motor 23 and a brake testing hydraulic motor 24 are mounted on the test bench. Both the brake under test 21 and the brake testing hydraulic motor 22 are mounted on the test bench. The load hydraulic motor 23 serves as the load for the brake testing motor 22, enabling performance testing of the brake testing motor 22. The brake testing motor 24 is used to brake the brake testing motor 21, thus enabling performance testing of the brake testing motor 21. The brake testing motor 22, the load hydraulic motor 23, and the brake testing hydraulic motor 24 are all supplied with the required hydraulic power through the hydraulic power station.

[0023] Specifically,

[0024] Combination Figure 1 The main oil pump 1, driven by its matching motor 2, delivers hydraulic oil from the main oil tank 7. After passing through the electromagnetic proportional throttle valve 10 and the electro-hydraulic directional valve 11, the hydraulic oil is divided into two paths: one path is delivered to the hydraulic motor under test 22, and the other path is delivered to the hydraulic motor 24 used for brake testing. The speed of the hydraulic motor under test 22 can be adjusted by the electromagnetic proportional throttle valve 10.

[0025] The replenishing pump 19, driven by its matching motor, delivers hydraulic oil from the replenishing oil tank 18 to the load hydraulic motor 23 via the electromagnetic proportional relief valve 8. This creates resistance on the output shaft of the tested hydraulic motor 22, forming a simulated load and enabling performance testing of the tested hydraulic motor 22. The speed and load of the load hydraulic motor 23 can be adjusted via the electromagnetic proportional relief valve 8, which allows for stepless adjustment, resulting in higher testing accuracy and more precise test parameters.

[0026] A torque meter 16 is installed on the test bench. The output ends of the hydraulic motor under test 22 and the load hydraulic motor 23 are respectively connected to the two ends of the torque meter 16, so that the torque meter 16 can measure the output torque of the hydraulic motor.

[0027] The control oil pump 20, driven by its matching motor, delivers hydraulic oil from the replenishment oil tank 18 to the brake under test 21 via the solenoid directional valve 12. By adjusting the solenoid directional valve 12, the brake under test 21 generates braking force on the brake test hydraulic motor 24, thereby realizing the performance test of the brake under test 21.

[0028] The test system for the tested hydraulic motor can draw pressure from the brake's oil supply line. Specifically, in conjunction with... Figure 1The control port of the electro-hydraulic directional valve 11 draws pressure from the oil supply line of the brake under test 21 to assist the electro-hydraulic directional valve 11 in controlling the direction of the hydraulic motor under test 22 and the hydraulic motor 24 used for brake testing.

[0029] The high-temperature oil tank 4 is equipped with a heater 6 for heating hydraulic oil. When the system hydraulic oil temperature is too low, the hydraulic oil in the high-temperature oil tank 4 is replenished into the hydraulic system through the main oil pump 1 to regulate the system hydraulic oil temperature.

[0030] In addition, a heater 6 is also provided in the main oil tank 7 to control the system hydraulic oil temperature. A cooling circulation pump 5 and a cooler 17 are respectively provided on the main oil tank 7 and the replenishing oil tank 18. The cooling circulation pump 5 draws oil from the tank, cools it through the cooler 17, and then returns it to the corresponding tank, thus circulating and cooling to lower the hydraulic oil temperature. In this embodiment, a cooler 17 is also provided in the oil circuit supplied by the replenishing pump 19 to the load hydraulic motor 23, which is also used to cool the hydraulic oil. The system hydraulic oil temperature is regulated by the heater 6 and cooler 17 installed in the system.

[0031] In this embodiment, oil filters 3 are respectively provided in the oil supply line of the main oil pump 1 and the oil supply line of the control oil pump 20.

[0032] To enable hydraulic system monitoring, flow meters 9, thermometers 13, and pressure gauges 14 are installed at multiple points within the hydraulic system as needed. A level gauge 15 is installed on the main oil tank 7 to monitor the hydraulic oil level in the main oil tank 7.

[0033] The integrated testing system provided in this application combines a hydraulic motor testing system and a brake testing system into one. It utilizes a load hydraulic motor as a simulated load for the tested hydraulic motor. The load hydraulic motor and the tested brake share a common oil tank, and the tested hydraulic motor and brake share a common hydraulic station and oil circuit, saving space in the testing equipment and significantly conserving hydraulic oil. The performance tests of the hydraulic motor and brake can be performed simultaneously and in the same location, greatly reducing testing time and improving testing efficiency.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A comprehensive testing system for hydraulic motors and brakes, characterized in that, It includes a hydraulic station and a test bench. The test bench is equipped with a load hydraulic motor and a brake test hydraulic motor. The brake under test and the brake test hydraulic motor are also mounted on the test bench. The load hydraulic motor serves as a simulated load for the brake test hydraulic motor to achieve performance testing of the brake test hydraulic motor. The brake test hydraulic motor is used to brake the brake test hydraulic motor to achieve performance testing of the brake test brake. The brake under test, the brake test hydraulic motor, the load hydraulic motor, and the brake test hydraulic motor are all provided with the required hydraulic power through the hydraulic station. The hydraulic power unit includes a main oil pump, a main oil tank, a replenishing oil tank, a replenishing oil pump, and a control oil pump; The main oil pump delivers hydraulic oil from the main oil tank. After passing through the electromagnetic proportional throttle valve, the hydraulic oil is divided into two paths: one path is delivered to the hydraulic motor under test, and the other path is delivered to the hydraulic motor used for brake testing. The speed of the hydraulic motor under test is adjusted by the electromagnetic proportional throttle valve. The replenishing pump delivers hydraulic oil from the replenishing oil tank to the load hydraulic motor. A torque meter is installed on the test bench. The output ends of the test hydraulic motor and the load hydraulic motor are respectively connected to the two ends of the torque meter. The load hydraulic motor creates resistance on the output shaft of the test hydraulic motor, forming a simulated load on the test hydraulic motor, thereby realizing the performance test of the test hydraulic motor; the torque meter measures the output torque of the hydraulic motor. The control oil pump delivers hydraulic oil from the replenishment tank to the brake under test via an electromagnetic reversing valve. By adjusting the electromagnetic reversing valve, the brake under test generates braking force on the hydraulic motor used for brake testing, thereby realizing the performance test of the brake under test. The hydraulic oil delivered by the main oil pump is divided into two paths after passing through the electromagnetic proportional throttle valve and the electro-hydraulic directional valve. One path is delivered to the hydraulic motor under test, and the other path is delivered to the hydraulic motor for brake testing. Pressure is taken from the oil supply line of the brake under test, and the pressure taking line is connected to the control port of the electro-hydraulic directional valve to assist the electro-hydraulic directional valve in controlling the direction of the hydraulic motor under test and the hydraulic motor for brake testing.

2. The comprehensive testing system according to claim 1, characterized in that, The replenishing pump delivers hydraulic oil from the replenishing oil tank to the load hydraulic motor via an electromagnetic proportional relief valve. The electromagnetic proportional relief valve is used to steplessly adjust the speed and load of the load hydraulic motor.

3. The comprehensive testing system according to claim 1, characterized in that, The hydraulic system of the hydraulic station is equipped with flow meters, thermometers and pressure gauges at multiple points as needed.

4. The comprehensive testing system according to claim 1, characterized in that, The main oil tank is equipped with a level gauge to monitor the hydraulic oil level in the main oil tank.

5. The comprehensive testing system according to claim 1, characterized in that, Oil filters are installed in both the main oil pump supply line and the control oil pump supply line.

6. The integrated testing system according to claim 1, characterized in that, It also includes a high-temperature oil tank. When the system hydraulic oil temperature is too low, the high-temperature hydraulic oil in the high-temperature oil tank is replenished into the hydraulic system through the main oil pump to regulate the system hydraulic oil temperature.

7. The comprehensive testing system according to claim 1, characterized in that, A cooling circulation pump and a cooler are respectively installed on the main oil tank and the replenishment oil tank. The cooling circulation pump draws oil out of the oil tank, cools it through the cooler, and then returns it to the corresponding oil tank.

8. The comprehensive testing system according to claim 7, characterized in that, A cooler is also installed in the oil circuit that supplies the hydraulic motor to the load by the replenishing pump.

Images