Power assembly vertical test bench and test method

Abstract

A vertical test bench for a power assembly comprises a test bench rack, a tested piece installation seat and a load piece installation seat are arranged on the test bench rack, the tested power assembly is vertically installed on the tested piece installation seat, a load piece is vertically installed on the load piece installation seat, and the vertical test bench further comprises a rotating assembly. The rotating assembly connects the tested power assembly with the output power of the load member. The test board can simulate the operation condition of a tested piece installed on a real vehicle, the rapid oil pumping and injection interface of the test board can be used for rapidly pumping and injecting oil to the tested piece, and the vibration sensor of the test board can be used for rapidly detecting the vibration noise parameter of a product. The test board can carry out no-load and load tests on the power assembly, can provide driving power for the power assembly without motor integration, and is high in test function integration degree and high in test efficiency.

Description

Technical Field

[0001] The present invention relates to the field of new energy powertrain testing equipment, and in particular to a powertrain vertical test bench and a testing method. Background Art

[0002] New energy powertrains generally include components such as drive motors, reducers, control modules, brakes or clutches. After the powertrain is assembled, it is necessary to perform functional testing on the powertrain. During the test, the powertrain needs to be started and run, and then the various electrical parameters and vibration and noise parameters of the powertrain are collected during the test to evaluate whether the various performances of the powertrain meet the design requirements. In the no-load test, the output end of the tested powertrain is not connected to the load, while the load test connects the load (generally a towing load) to provide it with a load. Some powertrains are installed vertically when used in actual vehicles, which is different from horizontal installation. The transmission method of loading on the test bench for vertical installation is very different from that for horizontal installation. Therefore, in the vertical installation of the powertrain test, in order to simulate the actual vehicle installation conditions, corresponding special test equipment needs to be provided for functional testing.

[0003] Through searching, technical documents on related powertrain testing equipment or methods have been disclosed in the prior art. For example, the invention patent publication document with the publication number "CN112098115A" and the name "Testing Equipment and Testing Method for Automobile Powertrain". The disclosed scheme includes a machine, a turntable arranged on the machine, and a turntable driving mechanism for driving the turntable to rotate intermittently, a motor fixture is arranged on the turntable, a vibration detection mechanism arranged on the motor fixture, a fixture driving device for driving the motor fixture to move, a no-load detection mechanism, a load detection mechanism, a torque detection mechanism and a stall torque detection mechanism arranged in sequence around the turntable, and a controller is arranged on one side of the machine. The installation method of the powertrain in this comparative document is horizontal installation, which cannot closely simulate the operating conditions of the vertically installed powertrain.

[0004] For example, the utility model authorization announcement document with the publication number "CN219369127U" and the name "A bidirectional loading test bench for a reducer". A bidirectional loading test bench for a reducer is provided, including a driving motor and a coupling 1, the driving end of the driving motor is connected to one end of a torque and speed sensor 1 through the coupling 1, the other end of the torque and speed sensor 1 is connected to one end of an input connection tooling through a coupling 2, the other end of the input connection tooling is connected to the input end of the reducer, and the output ends on both sides of the reducer are provided with load detection components for adjusting the load required for the test according to the test requirements. The test piece and the load piece in this comparative document are both installed horizontally, and the two are directly driven by flanges to achieve load testing. On the one hand, it is impossible to simulate the operating conditions of a vertical installation, and on the other hand, the vertical installation cannot be directly connected to the load piece for dragging. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a powertrain vertical test bench, including a test bench frame, on which a test piece mounting seat and a load piece mounting seat are provided, the test powertrain is vertically mounted on the test piece mounting seat, the load piece is vertically mounted on the load piece mounting seat, and also includes a rotating assembly, which connects the test powertrain and the load piece output power.

[0006] Furthermore, the rotating assembly includes a second driven wheel drivingly connected to the output end of the measured powertrain, an idler wheel is meshed on one side of the second driven wheel, and the idler wheel is meshed with the output end of the load component.

[0007] Furthermore, the rotating assembly also includes a first driven wheel, the second driven wheel and the first driven wheel are both sleeved on the driven shaft, and the first driven wheel can be vertically lifted and lowered to engage or disconnect the transmission connection with the output end of the measured powertrain.

[0008] Furthermore, it also includes an oil extraction and injection pipeline assembly, which includes an oil injection pipeline interface and an oil extraction pipeline interface that can be connected to the tested power assembly, and the oil injection pipeline interface and the oil extraction pipeline interface are both connected to the oil extraction motor through pipelines.

[0009] Furthermore, a vibration sensor is provided on one side of the mounting seat of the tested component, and the vibration sensor can be translated and extended to contact the tested powertrain.

[0010] Furthermore, a driving assembly is connected to the mounting seat of the tested piece, and the driving assembly includes a driving motor. The driving motor is mounted on the movable connecting seat, and the output end of the driving motor can be connected to the input end of the tested powertrain through an adapter.

[0011] Furthermore, the movable connection seat can be raised and lowered and can be deflected around an axis perpendicular to the surface of the test piece mounting seat.

[0012] Furthermore, the power assembly under test is vertically mounted on a mounting base of the tested component through an adapter plate, the adapter plate is provided with mounting holes distributed in a ring shape, and one end of the adapter is a spline and the other end is provided with a groove.

[0013] A powertrain test method is also proposed, using the powertrain vertical test bench, including a no-load test, wherein the no-load test includes the following specific steps: S1, vertically install the power assembly under test on the mounting base of the tested component and connect the oil injection pipeline interface and the oil extraction pipeline interface; S2, start the oil pumping motor to inject oil into the tested powertrain; S3, if the powertrain under test is integrated with a motor, the powertrain under test is directly started; otherwise, the drive component is connected to the powertrain under test and the drive motor is started; then the vibration sensor is translated to contact the surface of the powertrain under test; S4, after the test is completed, the vibration sensor is translated to leave the surface of the powertrain under test, the oil extraction motor is started to evacuate the oil in the powertrain under test, the oil injection pipeline interface and the oil extraction pipeline interface are disassembled, and the powertrain under test is then removed from the mounting seat of the tested component.

[0014] Furthermore, a load test is included. During the load test, in step S2, the first driven wheel is lifted and engaged with the output end of the tested power assembly to drive the tested power assembly and the load member.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects: the test bench can simulate the operating conditions of the tested parts installed in the actual vehicle, the quick oil extraction and injection interface of the test bench can be used to quickly extract and inject oil into the tested parts, and the vibration and noise parameters of the product can be quickly detected by the vibration sensor of the test bench. The test bench can perform no-load and load tests on the powertrain, and can provide driving power for the powertrain without motor integration, with high test function integration and high test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 :Test bench structure principle Figure 1 ; Figure 2 :Test bench structure principle Figure 2 ; Figure 3 :Test bench structure principle Figure 3 ; Figure 4 : Schematic diagram of the transfer plate structure; Figure 5 : Schematic diagram of the adapter structure. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figure 1~Figure 3 A powertrain vertical test bench includes a test bench 1, on which a test piece mounting seat 2 and a load piece mounting seat 3 are arranged, a test powertrain 5 is vertically mounted on the test piece mounting seat 2, a load piece 6 is vertically mounted on the load piece mounting seat 3, and a transmission assembly 4 is further included, wherein the transmission assembly 4 connects the test powertrain 5 and the load piece 6 to output power.

[0019] In this embodiment, the interior of the test bench 1 is used to install the load part 6 and the transmission component 4, and the outer upper surface provides a platform for installing the tested power assembly 5. Since the tested power assembly 5 and the load part 6 are both installed vertically, the actual vehicle installation and operation conditions can be fully simulated. Under this design, the transmission component 4 is required to connect the output power of the tested power assembly 5 and the load part 6 to achieve no-load testing and load testing.

[0020] In a more preferred embodiment, the transmission assembly 4 includes a second driven wheel 51 that is transmission-connected to the output end of the power assembly 5 to be tested, and an idler wheel 55 is meshed on one side of the second driven wheel 51, and the idler wheel 55 is meshed with the output end of the load member 6. In this embodiment, the idler wheel 55 is installed in the bottom space of the test bench 1, and both the upper and lower ends are supported and connected by bearings. When the power assembly 5 to be tested is started for load testing, the second driven wheel 51 meshes with the idler wheel 55, and a power connection with the output end of the load member 6 is achieved through the idler wheel 55 to achieve load testing.

[0021] In a more preferred embodiment, the transmission assembly 4 also includes a first driven wheel 52, and the second driven wheel 51 and the first driven wheel 52 are both sleeved on the driven shaft 53, and the first driven wheel 52 can be vertically lifted and lowered to engage or disconnect the transmission connection with the output end of the power assembly 5 under test. During no-load testing and load testing, it is necessary to engage or disengage the transmission connection between the load member 6 and the power assembly 5 under test. In order to achieve this test requirement, the first driven wheel 52 is connected to the output end of the power assembly 5 under test when lifted, and the output end of the load member 6 of the power assembly 5 under test is connected to the output end of the power assembly 5 under test by using the driven shaft 53, the second driven wheel 51, and the idler wheel 55. When a no-load test is required, the first driven wheel 52 is lowered so that the output end of the power assembly 5 under test is idle for a no-load test.

[0022] In a more preferred embodiment, it further includes an oil injection and extraction pipeline assembly 7. The oil injection and extraction pipeline assembly 7 includes an oil injection pipeline interface 71 and an oil extraction pipeline interface 72 that can be connected to the measured power assembly 5. Both the oil injection pipeline interface 71 and the oil extraction pipeline interface 72 are connected to the oil injection and extraction motor through pipelines. This test bench integrates the oil injection and extraction pipeline assembly 7. After connecting the oil injection pipeline interface 71 and the oil extraction pipeline interface 72 to the corresponding oil circuit interfaces of the measured power assembly 5, the oil injection and extraction motor can be used to quickly inject and extract oil from the measured power assembly 5 to improve the test efficiency.

[0023] In a more preferred embodiment, a vibration sensor 8 is further provided on one side of the measured component mounting seat 2. The vibration sensor 8 can be translated and extended to contact the measured power assembly 5. When testing the measured power assembly 5, whether it is no-load or load testing, it is necessary to evaluate and test its vibration condition. When testing, the vibration sensor 8 extends and contacts the outer shell of the measured power assembly 5, and then retracts after the test is completed. The telescopic control can be driven by a cylinder or a servo motor.

[0024] In a more preferred embodiment, a driving component 9 is further connected to the measured component mounting seat 2. The driving component 9 includes a driving motor 91. The driving motor 91 is installed on a movable connecting seat 92. The output end of the driving motor 91 can be power-connected to the input end of the measured power assembly 5 through a rotary joint 93. In some tests, the measured power assembly 5 does not integrate a motor. In order to provide a power source for it, the test bench provides the driving component 9. The driving component 9 can provide power for the measured power assembly 5 when needed. The rotary joint 93 can adapt to the connection of the measured power assembly 5 with different model interfaces.

[0025] In a more preferred embodiment, the movable connecting seat 92 can be lifted and deflected around an axis perpendicular to the surface of the measured component mounting seat 2. Specifically, in this embodiment, the movable connecting seat 92 is connected to the surface of the measured component mounting seat 2 through a telescopic shaft 93. The movable connecting seat 92 can rotate around it, and its lifting can be driven by the telescopic movement of the telescopic shaft 93. When it is necessary to provide power for the measured power assembly 5, the driving component 9 can be manually operated. Through the position adjustment such as the lifting and deflection of the movable connecting seat 92, the driving motor 91 is docked with the input end of the measured power assembly 5.

[0026] In a more preferred embodiment, the measured power assembly 5 is vertically installed on the measured component mounting seat 2 through an adapter plate 54. The adapter plate 54 is annularly distributed with mounting holes. One end of the rotary joint 93 is a spline, and the other end is provided with a groove. In this embodiment, the inner ring mounting holes of the adapter plate 54 are used to be fixedly connected to the measured power assembly 5, and the outer ring mounting holes are connected to the measured component mounting seat 2. One end spline of the rotary joint 93 is used to be connected to the input end of the measured power assembly 5, and the other end is power-connected by a pin shaft on the driving component 9 being inserted into the groove.

[0027] A powertrain test method can be proposed by using the above test bench, including a no-load test, wherein the no-load test includes the following specific steps: S1, vertically install the power assembly 5 under test on the test piece mounting seat 2 and connect the oil filling pipeline interface 71 and the oil extraction pipeline interface 72; S2, starting the oil pumping motor to inject oil into the tested power assembly 5; S3, if the tested power assembly 5 is integrated with a motor, the tested power assembly 5 is directly started, otherwise the driving component 9 is connected to the tested power assembly 5 by power and then the driving motor 91 is started; then the vibration sensor 8 is translated to contact the surface of the tested power assembly 5; S4, after the test is completed, the vibration sensor 8 is translated to leave the surface of the power assembly 5 under test, the oil extraction motor is started to evacuate the oil in the power assembly 5 under test, and then the oil injection pipeline interface 71 and the oil extraction pipeline interface 72 are disassembled, and the power assembly 5 under test is then removed from the test piece mounting seat 2.

[0028] In a more preferred embodiment, a load test is further included. During the load test, in step S2, the first driven wheel 52 is lifted and engaged with the output end of the tested power assembly 5 to achieve transmission connection between the tested power assembly 5 and the load member 6.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powertrain vertical test bench, characterized in that: The test bench comprises a test bench (1), on which a test piece mounting seat (2) and a load piece mounting seat (3) are provided, a test power assembly (5) is vertically mounted on the test piece mounting seat (2), and a load piece (6) is vertically mounted on the load piece mounting seat (3), and also comprises a transmission assembly (4), wherein the transmission assembly (4) connects the output power of the test power assembly (5) and the load piece (6).

2. The powertrain vertical test bench according to claim 1, characterized in that: The transmission assembly (4) comprises a second driven wheel (51) drivingly connected to the output end of the measured power assembly (5), an idler wheel (55) meshing on one side of the second driven wheel (51), and the idler wheel (55) meshing with the output end of the load member (6).

3. The powertrain vertical test bench according to claim 2, characterized in that: The transmission assembly (4) further comprises a first driven wheel (52), the second driven wheel (51) and the first driven wheel (52) are both sleeved on a driven shaft (53), and the first driven wheel (52) can be vertically raised and lowered to engage or disconnect the transmission connection with the output end of the measured power assembly (5).

4. The powertrain vertical test bench according to claim 1, characterized in that: It also includes an oil extraction and injection pipeline assembly (7), wherein the oil extraction and injection pipeline assembly (7) includes an oil injection pipeline interface (71) and an oil extraction pipeline interface (72) that can be connected to the tested power assembly (5), and the oil injection pipeline interface (71) and the oil extraction pipeline interface (72) are both connected to the oil extraction and injection motor via pipelines.

5. The powertrain vertical test bench according to claim 4, characterized in that: A vibration sensor (8) is also provided on one side of the measured component mounting seat (2), and the vibration sensor (8) can be translated and extended to contact the measured power assembly (5).

6. The powertrain vertical test bench according to claim 5, characterized in that: A drive assembly (9) is also connected to the test piece mounting seat (2), wherein the drive assembly (9) comprises a drive motor (91), the drive motor (91) is mounted on a movable connection seat (92), and an output end of the drive motor (91) can be connected to an input end of a power assembly (5) under test via an adapter (93).

7. The powertrain vertical test bench according to claim 6, characterized in that: The movable connection seat (92) can be raised and lowered and can be deflected around an axis perpendicular to the surface of the measured object mounting seat (2).

8. The powertrain vertical test bench according to claim 7, characterized in that: The measured power assembly (5) can be vertically mounted on the measured component mounting seat (2) via an adapter plate (54), and mounting holes are distributed in a ring shape on the adapter plate (54). One end of the adapter (93) is a spline, and the other end is provided with a groove.

9. A powertrain testing method, characterized in that: The powertrain vertical test bench as claimed in claim 6 includes a no-load test, wherein the no-load test includes the following specific steps: S1, vertically mounting the power assembly (5) to be tested on the mounting base (2) of the tested component and connecting the oil injection pipeline interface (71) and the oil extraction pipeline interface (72); S2, starting the oil pumping motor to inject oil into the tested powertrain (5); S3, if the power assembly (5) under test is integrated with a motor, the power assembly (5) under test is directly started; otherwise, the drive assembly (9) and the power assembly (5) under test are connected to each other and then the drive motor (91) is started; then the vibration sensor (8) is translated to contact the surface of the power assembly (5) under test; S4, after the test is completed, the vibration sensor (8) is translated to leave the surface of the power assembly (5) under test, the oil extraction motor is started to evacuate the oil in the power assembly (5) under test, the oil injection pipeline interface (71) and the oil extraction pipeline interface (72) are disassembled, and the power assembly (5) under test is then removed from the mounting base (2) of the test piece.

10. The powertrain testing method according to claim 9, characterized in that: The method further comprises a load test. During the load test, in step S2, the first driven wheel (52) is lifted and engaged with the output end of the tested power assembly (5) to achieve transmission connection between the tested power assembly (5) and the load member (6).

Images