Transmission system testing device and testing loop

Abstract

The invention discloses a transmission system test device and a test loop. The transmission system test device comprises a test platform; a torque converter testing mechanism and a gearbox testing mechanism are arranged on the testing platform through a guide rail, and the distance between the gearbox testing mechanism and the torque converter testing mechanism is adjusted; the torque converter testing mechanism and the gearbox testing mechanism are connected through a transmission shaft, and the torque converter testing mechanism is provided with a driving mechanism and a parameter detection mechanism, so that the action of the torque converter testing mechanism is transmitted to the gearbox testing mechanism for detection. According to the device, the test platform, the torque converter test mechanism and the gearbox test mechanism are designed, the transmission shaft is used for conduction, the relative positions of the torque converter and the gearbox can be adjusted according to the specific models of the torque converter and the gearbox, the torque converter and the gearbox can be detected independently, and the combination of the torque converter and the gearbox can also be detected.

Description

Technical Field

[0001] The invention relates to the technical field of automobile transmission system testing, and in particular to a transmission system testing device and a testing circuit. Background Art

[0002] The transmission system of off-road vehicles is composed of gearboxes and torque converters, which integrate mechanical, electrical, and hydraulic technologies and play a key role in the vehicle's power performance. Due to the complex working conditions of off-road vehicles, long operation time, and poor environment, the possibility of failure of gearboxes and torque converters will increase. After the failure of the gearbox and torque converter, how to repair and how to perform performance tests are key contents for the normal use of the vehicle's power performance. Without appropriate gearbox and torque converter testing technology and test benches, it is impossible to evaluate the quality of the repaired product.

[0003] There are many kinds of existing gearbox and torque converter test benches, most of which can only provide no-load running-in tests, and can only determine whether the gearbox and torque converter have oil leakage or abnormal noise, but cannot give specific digital evaluations based on indicators such as pressure and flow. At the same time, some test benches can provide combined tests of gearbox + torque converter, but cannot test the gearbox or torque converter separately, resulting in low test efficiency, complicated test process, and inconvenient use by testers. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a transmission system testing device and a testing circuit.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a transmission system testing device, comprising:

[0006] Test platform;

[0007] The test platform is provided with a torque converter test mechanism and a gearbox test mechanism via guide rails, and the distance between the gearbox test mechanism and the torque converter test mechanism is adjusted;

[0008] The torque converter test mechanism and the gearbox test mechanism are connected via a transmission shaft. The torque converter test mechanism is provided with a driving mechanism and a parameter detection mechanism, so that the action of the torque converter test mechanism is transmitted to the gearbox test mechanism for detection.

[0009] As a further description of the above technical solution: the torque converter test mechanism includes a protective cover, the protective cover is installed with a torque converter test bench along the setting direction of the guide rail, and the torque converter is installed at the output end of the torque converter test bench.

[0010] As a further description of the above technical solution: a driving mechanism is installed on the inner side of the protective cover, and the driving mechanism passes through the protective cover and the torque converter test bench and is electrically connected to the torque converter.

[0011] As a further description of the above technical solution: the parameter detection mechanism is installed on the outside of the protective cover.

[0012] As a further description of the above technical solution: the gearbox testing mechanism includes a gearbox testing bench, and the gearbox testing bench reciprocates along the setting direction of the guide rail.

[0013] As a further description of the above technical solution: a gearbox is arranged on the upper end surface of the gearbox test bench.

[0014] As a further description of the above technical solution: a hydraulic pump station is also installed on the inner side of the protective cover, which is connected to the torque converter and the gearbox through pipelines via a transmission oil radiator and a transmission oil filter.

[0015] As a further description of the above technical solution: a plurality of T-shaped grooves are provided on the end surface of the test platform to form a plurality of guide rails, and at least one oil drain port is provided on the end surface of the test platform.

[0016] Also included is a transmission system test circuit, characterized in that the test circuit is applicable to the test device described in any one of the above technical solutions, including:

[0017] Hydraulic pump station;

[0018] The output end of the hydraulic pump station is connected to the transmission oil filter through a double gear pump, the output end of the transmission oil filter is connected to the solenoid valve and the pressure tester, the output end of the pressure tester is connected to the pressure regulating valve, and the output end of the pressure regulating valve is directly connected to the hydraulic pump station or connected to the hydraulic pump station through a pressure reducing valve;

[0019] The output end of the pressure regulating valve is also connected to the device to be tested, one end of the device to be tested is connected to the hydraulic pump station through the double gear pump, and the other end is connected to the cooler through a plurality of temperature detectors and pressure detectors, and the output end of the cooler is connected to the hydraulic pump station;

[0020] A transmission oil heater is arranged inside the hydraulic pump station.

[0021] As a further description of the above technical solution: the device to be tested is a torque converter or a gearbox.

[0022] The above technical solution has the following advantages or beneficial effects:

[0023] 1. By designing the test platform, torque converter test mechanism and gearbox test mechanism, and using the transmission shaft for transmission, the relative positions of the torque converter and gearbox can be adjusted according to their specific models, and the torque converter and gearbox can be tested separately or in combination;

[0024] 2. By setting pressure and temperature detection, the temperature rise and pressure changes of the transmission system can be monitored in time, so as to judge whether the transmission system meets the requirements, and the data comparison is more intuitive and clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A side view of the test device proposed by the present invention;

[0026] Figure 2 A top view of the testing device proposed by the present invention;

[0027] Figure 3 A top view of the test platform of the present invention;

[0028] Figure 4 is a side view of the torque converter testing mechanism of the present invention;

[0029] Figure 5 A top view of the torque converter testing mechanism of the present invention;

[0030] Figure 6 It is a side view of the gearbox testing mechanism of the present invention;

[0031] Figure 7 A top view of the gearbox testing mechanism of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the test circuit proposed by the present invention.

[0033] Legend:

[0034] 1. Test platform; 11. Guide rail; 12. Oil drain port; 2. Torque converter test mechanism; 21. Protective cover; 22. Torque converter test bench; 23. Torque converter; 3. Gearbox test mechanism; 31. Gearbox test bench; 32. Gearbox; 4. Transmission shaft; 5. Driving mechanism; 6. Parameter detection mechanism; 7. Hydraulic pump station; 701. Dual gear pump; 702. Solenoid valve; 703. Pressure regulating valve; 704. Pressure reducing valve; 705. Cooler; 706. Transmission oil heater; 8. Transmission oil radiator; 9. Transmission oil filter. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Figure 1-Figure 7 An embodiment of the present invention provides: a transmission system testing device, comprising: a testing platform 1; a torque converter testing mechanism 2 and a gearbox testing mechanism 3 are arranged on the testing platform 1 through a guide rail 11, and the distance between the gearbox testing mechanism 3 and the torque converter testing mechanism 2 is adjusted; the torque converter testing mechanism 2 and the gearbox testing mechanism 3 are connected through a transmission shaft 4, and a driving mechanism 5 and a parameter detection mechanism 6 are arranged on the torque converter testing mechanism 2, so that the action of the torque converter testing mechanism 2 is transmitted to the gearbox testing mechanism 3, and detection is performed.

[0037] In this embodiment, by setting a movable torque converter test mechanism 2 and a gearbox test mechanism 3 on the test platform 1, it is possible to replace different types of torque converters 23 and gearboxes 32, and adjust the relative distance between the torque converter test mechanism 2 and the gearbox test mechanism 3 through the guide rail 11 to adapt to different detection requirements. By designing the test platform, the torque converter test mechanism and the gearbox test mechanism, and using the transmission shaft for transmission, the relative positions of the two can be adjusted according to the specific models of the torque converter and the gearbox, and the torque converter and the gearbox can be tested separately, or the combination of the two can be tested. The transmission shaft 4 is a transmission member that connects the gearbox 32 and the torque converter 23 to transmit torque, and transmits the power of the drive mechanism 5 to the gearbox 32 to realize the operation of the gearbox 32.

[0038] The torque converter test mechanism 2 comprises a protective cover 21 , a torque converter test bench 22 is installed on the protective cover 21 along the setting direction of the guide rail 11 , and a torque converter 23 is installed at the output end of the torque converter test bench 22 .

[0039] In this embodiment, the torque converter test bench 22 supports the installation of the torque converter 23, and is adapted to different flywheel installations according to different models of the torque converter 23. Specifically, the torque converter test bench 22 has a variety of flywheel housing installation methods and flexible disk power transmission installation options, including bolt connection, snap-on connection, flange connection, welding, keyway connection, clamp fixation, etc., which can be selected according to the model and requirements of the torque converter 23, and multiple series of torque converters 23 can be tested without replacing additional tooling. It can meet the test of DANA C270, C3000, C5000, C8000, C9000 and other series of gearboxes

[0040] The driving mechanism 5 is installed inside the protective cover 21 . The driving mechanism 5 passes through the protective cover 21 and the torque converter test bench 22 and is electrically connected to the torque converter 23 .

[0041] In this embodiment, the drive mechanism 5 is the power source of the entire transmission test system, including a motor and a motor control system, which can realize remote control, including the start and stop of the motor, speed regulation, etc. The motor power is 132KW, and the speed can be steplessly adjusted from 0-3000rpm to simulate the whole vehicle electric drive or engine drive vehicle test.

[0042] The parameter detection mechanism 6 is installed outside the protective cover 21 .

[0043] In this embodiment, the parameter detection mechanism 6 includes a pressure detector, a temperature detector and a flow detector, which can meet the parameter detection of the outlet flow of the torque converter 23, the pump flow, the transmission 32 flow, the locking flow and the like. The pressure detector can meet the parameter detection of the main oil pressure of the transmission 32, the safety pressure of the torque converter 23, the pressure of each gear, the locking pressure and the like, and the temperature detector can detect the temperature of the transmission oil.

[0044] The gearbox test mechanism 3 includes a gearbox test bench 31 , and the gearbox test bench 31 reciprocates along the setting direction of the guide rail 11 to perform position adjustment.

[0045] A gearbox 32 is provided on the upper end surface of the gearbox test bench 31 to support the gearbox 32. The bottom of the gearbox test bench 31 cooperates with the guide rail 11 of the test platform 1 and is positioned by clamping tools such as bolts. It can also be moved along the guide rail 11 of the test platform 1 to facilitate combined testing of various transmission systems. A connecting frame can also be provided on the gearbox test bench 31 to quickly adapt and install the gearbox 32. According to different gearbox designs, it is fixed to the gearbox test bench 31 by bolts; the connecting frame is also bolted to the gearbox 32.

[0046] A hydraulic pump station 7 is also installed on the inner side of the protective cover 21 , and is connected to the torque converter 23 and the gearbox 32 through pipelines via a transmission oil radiator 8 and a transmission oil filter 9 .

[0047] In this embodiment, the hydraulic pump station 7 is the hydraulic power source of the transmission system. When the gearbox 32 is tested alone, it can provide a pressure source for the clutch to ensure normal lubrication and shifting of the clutch. The transmission oil radiator 8 dissipates heat for the entire transmission system to avoid the high temperature during the transmission system test affecting the test conclusion. The transmission oil filter 9 is a guarantee of the oil cleanliness of the entire transmission system. It is a fine filter to prevent oil contamination in the transmission system.

[0048] A plurality of T-shaped grooves are provided on the end surface of the test platform 1 to form a plurality of guide rails 11 . The end surface of the test platform 1 is provided with at least one oil drain port 12 .

[0049] In this embodiment, the material of the test platform 1 is cast iron, and a plurality of T-shaped grooves are integrated on the upper surface to form a plurality of guide rails 11, which can facilitate the movement of the torque converter test mechanism 2 and the gearbox test mechanism 3. Due to the diversity of the gearbox 32 and the torque converter 23, the gearbox test bench 31 will inevitably move along with the guide rail 11 according to the test requirements. At least one oil drain port 12 is provided on the end face of the test platform 1. In this application, four oil drain ports are preferably provided, which are arranged on one side or at the four corners of the test platform 1, and a plug is provided on the outside. If there is oil leakage from the test piece or the pipeline during the test, the oil can be drained through the oil drain hole on the T-shaped platform.

[0050] Reference Figure 8 The present invention further provides an embodiment of a transmission system test circuit, the test circuit is applicable to the test device of any one of the above technical solutions, including:

[0051] Hydraulic pump station 7;

[0052] The output end of the hydraulic pump station 7 is connected to the transmission oil filter 9 through the double gear pump 701, the output end of the transmission oil filter 9 is connected to the solenoid valve 702 and the pressure tester, the output end of the pressure tester is connected to the pressure regulating valve 703, the output end of the pressure regulating valve 703 is directly connected to the hydraulic pump station 7, or is connected to the hydraulic pump station 7 through the pressure reducing valve 704;

[0053] The output end of the pressure regulating valve 703 is also connected to the device to be tested. One end of the device to be tested is connected to the hydraulic pump station 7 through the double gear pump 701, and the other end is connected to the cooler 705 through a number of temperature detectors and pressure detectors. The output end of the cooler 705 is connected to the hydraulic pump station 7;

[0054] A transmission oil heater 706 is provided inside the hydraulic pump station 7 .

[0055] The device to be tested is the torque converter 23 or the gearbox 32 .

[0056] In this embodiment, the gearbox 32 and the torque converter 23 draw oil from the oil tank of the hydraulic pump station 7, and supply oil to the device to be tested through the pressure regulating valve 703; the pipeline connected to the device to be tested is connected to the test bench through a quick-change joint, which is convenient for the test personnel to operate without replacing the internal test pipeline; because the temperature of the transmission oil has a great influence on the performance of the transmission system, a transmission oil heater 706 is integrated inside the oil tank of the hydraulic pump station 7, which can quickly increase the temperature of the transmission oil and reduce the test waiting time; the cooler 705 has a pressure detector and a temperature detector at the inlet and outlet of the oil, which can timely monitor the temperature rise and pressure changes of the transmission system, so as to determine whether the transmission system meets the requirements.

[0057] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission system testing device, characterized in that: include: Test platform (1); The torque converter testing mechanism (2) and the gearbox testing mechanism (3) are arranged on the testing platform (1) via a guide rail (11), and the distance between the gearbox testing mechanism (3) and the torque converter testing mechanism (2) is adjusted; The torque converter test mechanism (2) and the gearbox test mechanism (3) are connected via a transmission shaft (4); a drive mechanism (5) and a parameter detection mechanism (6) are provided on the torque converter test mechanism (2) so that the action of the torque converter test mechanism (2) is transmitted to the gearbox test mechanism (3) for detection.

2. The testing device according to claim 1, characterized in that: The torque converter test mechanism (2) comprises a protective cover (21), a torque converter test bench (22) is installed on the protective cover (21) along the setting direction of the guide rail (11), and a torque converter (23) is installed at the output end of the torque converter test bench (22).

3. The testing device according to claim 2, characterized in that: A driving mechanism (5) is installed inside the protective cover (21), and the driving mechanism (5) passes through the protective cover (21) and the torque converter test bench (22) and is electrically connected to the torque converter (23).

4. The testing device according to claim 2, characterized in that: The parameter detection mechanism (6) is installed outside the protective cover (21).

5. The testing device according to claim 2, characterized in that: The gearbox testing mechanism (3) comprises a gearbox testing bench (31), and the gearbox testing bench (31) moves back and forth along the setting direction of the guide rail (11).

6. The testing device according to claim 5, characterized in that: The upper end surface of the gearbox test bench (31) is provided with a gearbox (32).

7. The testing device according to claim 6, characterized in that: A hydraulic pump station (7) is also installed on the inner side of the protective cover (21), and is connected to the torque converter (23) and the gearbox (32) through pipelines via a transmission oil radiator (8) and a transmission oil filter (9).

8. The testing device according to claim 1, characterized in that: The end surface of the test platform (1) is provided with a plurality of T-shaped grooves to form a plurality of guide rails (11), and the end surface of the test platform (1) is provided with at least one oil drain port (12).

9. A transmission system test circuit, characterized in that: The test circuit is applicable to the test device according to any one of claims 1 to 8, comprising: Hydraulic pump station (7); The output end of the hydraulic pump station (7) is connected to a transmission oil filter (9) via a double gear pump (701); the output end of the transmission oil filter (9) is connected to a solenoid valve (702) and a pressure test gauge; the output end of the pressure test gauge is connected to a pressure regulating valve (703); the output end of the pressure regulating valve (703) is directly connected to the hydraulic pump station (7) or is connected to the hydraulic pump station (7) via a pressure reducing valve (704); The output end of the pressure regulating valve (703) is also connected to the device to be tested. One end of the device to be tested is connected to the hydraulic pump station (7) via the double gear pump (701), and the other end is connected to the cooler (705) via a plurality of temperature detectors and pressure detectors. The output end of the cooler (705) is connected to the hydraulic pump station (7); A transmission oil heater (706) is provided inside the hydraulic pump station (7).

10. The test circuit according to claim 9, characterized in that: The device to be tested is a torque converter (23) or a gearbox (32).

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