Test device for a dual drive system

Abstract

The application relates to the technical field of driving system testing, and provides a testing device for a double driving system, which comprises at least one driving part, two sets of transmission mechanisms, a power transmission direction control mechanism and the like, wherein the first shaft of one set of the transmission mechanisms is in transmission connection with the driving part, the second shafts of the two sets of transmission mechanisms are respectively used for being connected with the double driving system, the first shaft is in transmission connection with the second shaft, the power transmission direction control mechanism is located between the two sets of transmission mechanisms, the power transmission direction control mechanism is connected with the first shaft of the two sets of transmission mechanisms, the power transmission direction control mechanism can change the power transmission direction, and is used for transmitting the power direction of the driving part to the other set of transmission mechanisms. Through the technical scheme, the two sets of independent electric driving systems can be synchronously tested or respectively independently tested without any modification of the testing system, so that the testing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of drive system testing technology, and more specifically, to a testing device for a dual-drive system. Background Technology

[0002] Dual drive system is a brand-new product configuration that multiple automakers are developing. Dual drive system has two independent electric drive systems. Each drive system consists of a motor and a reducer assembly, which drives one wheel independently. This achieves completely independent control and drive of the two wheels, adding more possibilities to the control of the whole vehicle. By controlling the rotation direction of the wheels, it is easy to achieve a turn on the spot.

[0003] Typically, the two electric drive systems operate independently. In the early stages of product development, multiple tests, such as lubrication, ventilation, and shaft sealing, are required to ensure that the product functions meet usage requirements. Due to the unique structure of the product, the dual-drive system has two independent drive systems, while traditional test benches used for the above tests only have one power output end, which is generally insufficient to meet these testing needs. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a test device for a dual-drive system, which can realize the synchronous testing or independent testing of two independent electric drive systems without any modification to the test system, thereby reducing the testing cost.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] This application provides a testing device for a dual-drive system, comprising: at least one drive component; two sets of transmission mechanisms, wherein the first shaft of the first set of transmission mechanisms is driveably connected to the drive component, and the second shafts of the two sets of transmission mechanisms are respectively used to connect to the dual-drive system, and the first shaft is drively connected to the second shaft; and a power transmission direction control mechanism located between the two sets of transmission mechanisms, wherein the power transmission direction control mechanism is connected to the first shaft of the two sets of transmission mechanisms, and the power transmission direction control mechanism can change the power transmission direction to transmit the power direction of the drive component to the second set of transmission mechanisms.

[0007] In one embodiment, the power transmission direction control mechanism includes a unidirectional control mechanism, which can be engaged or disengaged. When engaged, the unidirectional control mechanism is connected to the first shaft of the two sets of transmission mechanisms. When disengaged, the unidirectional control mechanism is disconnected from the first shaft of the two sets of transmission mechanisms.

[0008] In one embodiment, the unidirectional control mechanism includes a first connecting shaft and a second connecting shaft. The first connecting shaft is connected to the first shaft of the first set of the transmission mechanism, and the second connecting shaft is connected to the first shaft of the second set of the transmission mechanism. Both the first connecting shaft and the second connecting shaft are provided with a first gear. The unidirectional control mechanism also includes a unidirectional controller and a gear sleeve connected to the unidirectional controller. The unidirectional controller can move along the axial direction of the first connecting shaft to control the gear sleeve to connect or disconnect with the two first gears.

[0009] In one embodiment, the power transmission direction control mechanism includes a reversing control mechanism, which can be engaged or disengaged. When engaged, the reversing control mechanism is connected to the first shaft of the two sets of transmission mechanisms to change the power transmission direction. When disengaged, the reversing control mechanism is disconnected from the first shaft of the two sets of transmission mechanisms.

[0010] In one embodiment, the reversing control mechanism includes a second gear sleeved on the first connecting shaft and the second connecting shaft, a reversing controller, and a third gear connected to the reversing controller. The reversing controller can move in an axial direction perpendicular to the first connecting shaft to control the third gear to mesh or disengage with the two second gears.

[0011] In one embodiment, the transmission mechanism includes multiple bearing seats, with the two ends of the first shaft connected to two of the bearing seats, and the two ends of the second shaft connected to two of the bearing seats.

[0012] In one embodiment, the transmission mechanism further includes a plurality of transmission wheels and a belt, wherein the plurality of transmission wheels are respectively mounted on the first shaft and the second shaft, and the belt is connected to the corresponding plurality of transmission wheels; or, the transmission mechanism includes a gearbox, wherein the gearbox can be drivenly connected to the first shaft and the second shaft respectively.

[0013] In one implementation, the two bearing seats of the same transmission mechanism are installed in a detachable manner.

[0014] In one embodiment, the testing device further includes a test platform for supporting the dual drive system, the test platform being located between the two transmission mechanisms.

[0015] In one embodiment, the two ends of the first shaft of the first transmission mechanism are connected to the driving member and the first connecting shaft via a transmission shaft; one end of the first shaft of the second transmission mechanism is connected to the second connecting shaft via a transmission shaft.

[0016] The technical solution of this application has the following effects:

[0017] By setting up two sets of transmission mechanisms, the first shaft of the first transmission mechanism is connected to the drive component, and the second shafts of both transmission mechanisms are used for transmission connection to the dual drive system. The first shaft and the second shaft in each transmission mechanism are connected. A power transmission direction control mechanism is also set between the two transmission mechanisms. The power transmission direction control mechanism is connected to the first shaft of both transmission mechanisms and can transmit power. In this way, when the drive component generates power, the transmission mechanism connected to the drive component can transmit power to the first electric drive system through the transmission connection of the first and second shafts. The power of the second transmission mechanism is transmitted to the first shaft of the second transmission mechanism through the power transmission direction control mechanism, and then from the first shaft to the second shaft, completing the test of the second electric drive system. The power transmission direction control mechanism can also change the power transmission direction, thereby realizing the same-direction or opposite-direction test of the dual drive system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a test device for a dual-drive system provided in an embodiment of this application.

[0020] Icons: 1-Driver; 2-Transmission mechanism; 21-First shaft; 22-Second shaft; 23-Bearing housing; 24-Belt; 3-Power transmission direction control mechanism; 31-Same direction control mechanism; 311-First connecting shaft; 312-Second connecting shaft; 313-First gear; 314-Same direction controller; 315-Gear sleeve; 316-Reversing control mechanism; 317-Second gear; 318-Third gear; 319-Reversing controller; 4-Drive shaft. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figure 1As shown in the figure, this application provides a testing device for a dual-drive system, including: at least one drive component 1, and two sets of transmission mechanisms 2. Each set of transmission mechanisms 2 includes a first shaft 21 and a second shaft 22. By setting two sets of transmission mechanisms 2, the first shaft 21 of the first set of transmission mechanisms 2 is connected to the drive component 1, and the second shafts 22 of both sets of transmission mechanisms 2 are used for transmission connection with the dual-drive system. The first shaft 21 and the second shaft 22 in each set of transmission mechanisms 2 are transmissionally connected. A power transmission direction control mechanism 3 is also provided between the two sets of transmission mechanisms 2. The power transmission direction control mechanism 3 is connected to the first shaft 21 of the two sets of transmission mechanisms 2, and the power transmission direction control mechanism 3 can transmit power... In this way, when the drive component 1 generates power, the transmission mechanism 2 connected to the drive component 1 can transmit the power to one of the electric drive systems through the transmission connection of the first shaft 21 and the second shaft 22; the power of the second transmission mechanism 2 is transmitted to the first shaft 21 of the second transmission mechanism 2 through the power transmission direction control mechanism 3, and then transmitted from the first shaft 21 to the second shaft 22 to complete the test of the other electric drive system. The power transmission direction control mechanism 3 can also change the power transmission direction, thereby realizing the synchronous forward or backward or opposite direction operation test of two independent electric drive systems without modifying the dual drive system in the embodiments of this application.

[0024] Optionally, the test device for the dual drive system in this application embodiment is detachable. Therefore, the test device for the dual drive system in this application embodiment can be combined with the original tilting test stand to realize lubrication, ventilation and shaft sealing tests of the dual electric drive system under different pitch and tilt angles.

[0025] Optionally, in the case of unidirectional power transmission, the second shaft 22 of the two transmission mechanisms 2 can be connected to a single motor drive with a differential. The test device for the dual drive system in this embodiment can also meet the verification requirements of other types of single motor drive products with differentials without welding the differential, which greatly improves the reusability of the product and reduces the product development and testing costs.

[0026] Optionally, the drive component 1 can be a drive motor, which can be used to test the dual drive system; when the dual drive systems are three-in-one drive systems, the drive component 1 can also be a loading motor for the three-in-one drive system.

[0027] Optionally, in some cases, two drive components 1 can be provided, that is, the two drive components 1 are respectively connected to the first shaft 21 of the transmission mechanism 2. In this way, the two drive components 1 can be tested separately on the corresponding side of the drive system.

[0028] Optionally, in some cases, when there is only one drive unit 1, any one of the transmission mechanisms 2 can be disconnected, so that the drive unit 1 can control the operation of a single drive system.

[0029] Optionally, if a single drive system in the dual electric drive system uses a three-in-one electric drive system, since the three-in-one electric drive system has its own controller, the controller can start the drive system and complete the drag load test between the two drive systems. By disconnecting drive component 1, the two electric drive systems can work in torque and speed modes respectively. This allows for dynamic and steady-state testing between the two electric drive systems without the need for an additional power drive system, further reducing the investment in testing equipment and achieving lower-cost reliable durability testing.

[0030] Optionally, the second shaft 22 of the two sets of transmission mechanisms 2 can be connected to the output shaft of the dual drive system via the transmission shaft 4.

[0031] Optionally, when the power transmission direction control mechanism 3 is disconnected, the drive unit 1 can also test the individual drive system.

[0032] like Figure 1 As shown, in one embodiment, the power transmission direction control mechanism 3 includes a unidirectional control mechanism 31, which can be engaged or disengaged. When the unidirectional control mechanism 31 is engaged, it is connected to the first shaft 21 of the two sets of transmission mechanisms 2, thereby realizing the synchronous operation test of the dual drive system; when the unidirectional control mechanism 31 is disengaged, it is disconnected from the first shaft 21 of the two sets of transmission mechanisms 2, thereby realizing the operation test of the individual drive system.

[0033] like Figure 1 As shown, in one embodiment, the co-rotation control mechanism 31 includes a first connecting shaft 311 and a second connecting shaft 312. The first connecting shaft 311 is connected to the first shaft 21 of the first transmission mechanism 2, and the second connecting shaft 312 is connected to the first shaft 21 of the second transmission mechanism 2. Both the first connecting shaft 311 and the second connecting shaft 312 are provided with a first gear 313. The co-rotation control mechanism 31 also includes a co-rotation controller 314 and a gear sleeve 315 connected to the co-rotation controller 314. The co-rotation controller 314 can move along the axial direction of the first connecting shaft 311 to control the gear sleeve 315 to connect or disconnect with the two first gears 313. This enables the co-rotation control mechanism 31 to transmit the power generated by the drive component 1 from the first transmission mechanism 2 to the second transmission mechanism 2 without changing the transmission direction, thus realizing the synchronous forward rotation test of the dual drive system.

[0034] Optionally, when the gear sleeve 315 is disconnected from the first gear 313 and the second gear 317, the first connecting shaft 311 and the second connecting shaft 312 can rotate freely.

[0035] Optionally, in some cases, when the same-direction control mechanism 31 is engaged, the transmission mechanism 2, which is directly connected to the drive unit 1, can also be disconnected, so that the drive unit 1 can also perform operation tests on the individual drive system.

[0036] like Figure 1 As shown, in one embodiment, the power transmission direction control mechanism 3 includes a reversing control mechanism 316. The reversing control mechanism 316 can be engaged or disengaged. When engaged, the reversing control mechanism 316 is connected to the first shaft 21 of the two sets of transmission mechanisms 2 to change the power transmission direction and realize the synchronous reverse operation test of the dual drive system, that is, one set of drive system rotates forward and the other set of drive system rotates in reverse. When disengaged, the reversing control mechanism 316 is disconnected from the first shaft 21 of the two sets of transmission mechanisms 2, and the test device can realize the reverse operation test of a single drive system.

[0037] Optionally, when both the reversing control mechanism 316 and the co-rotating control mechanism 31 are in the disconnected position, the first connecting shaft 311 and the second connecting shaft 312 on both sides are in the disconnected state and can rotate freely relative to each other; when it is necessary to achieve reverse rotation of the dual drive system, the reversing control mechanism 316 is in the engaged state and the co-rotating control mechanism 31 is in the disconnected state; when it is necessary for the dual drive system to rotate synchronously in the forward direction, the co-rotating control mechanism 31 is in the engaged state, and the reversing control mechanism 316 is in the disconnected state.

[0038] like Figure 1 As shown, in one embodiment, the reversing control mechanism 316 includes a second gear 317 sleeved on the first connecting shaft 311 and the second connecting shaft 312, a reversing controller 319, and a third gear 318 connected to the reversing controller 319. The reversing controller 319 can move along an axial direction perpendicular to the first connecting shaft 311 to control the third gear 318 to mesh or disengage with the two second gears 317, thereby enabling the reversing control mechanism 316 to change the direction of force transmission and transmit the power generated by the drive member 1 from the first transmission mechanism 2 to the second transmission mechanism 2, realizing the synchronous reverse test of the dual drive system.

[0039] Optionally, the second gear 317 and the third gear 318 can both be bevel gears, and the first gear 313 and the second gear 317 are spaced apart to avoid mutual interference.

[0040] Optionally, the power transmission direction control mechanism 3 also includes a housing, and the same direction control mechanism 31 and the reversing control mechanism 316 are both installed in the housing. The housing can provide stable support, so that the power transmission direction control mechanism 3 can transmit power stably. Multiple bearing seats 23 can also be installed in the housing to support the first connecting shaft 311 and the second connecting shaft 312 respectively.

[0041] like Figure 1As shown, in one embodiment, the transmission mechanism 2 includes multiple bearing seats 23. The two ends of the first shaft 21 are connected to two bearing seats 23, and the two ends of the second shaft 22 are connected to two bearing seats 23. Each set of transmission mechanism 2 is provided with multiple bearing seats 23, so as to provide support for the first shaft 21 and the second shaft 22, so that the first shaft 21 of the same set of transmission mechanism 2 can transmit power to the second shaft 22.

[0042] like Figure 1 As shown, in one embodiment, the transmission mechanism 2 also includes multiple transmission wheels and a belt 24. The multiple transmission wheels are respectively mounted on the first shaft 21 and the second shaft 22. The belt 24 is connected to the corresponding multiple transmission wheels, so that the first shaft 21 of the transmission mechanism 2 can transmit power to the second shaft 22, and then connect to the drive system through the second shaft 22 to realize the testing of the drive system.

[0043] Optionally, the transmission wheel is also detachably connected to the first shaft 21 and the second shaft 22, and the size of the transmission wheel can be changed to achieve speed increase, speed decrease or constant speed control.

[0044] Of course, the drive wheel and belt 24 can also be replaced by a gearbox, which is connected to the first shaft 21 and the second shaft 22 respectively to realize the transmission of power.

[0045] Optionally, if a single drive system in the dual-electric drive system uses a three-in-one electric drive system, since the three-in-one electric drive system has its own controller that can start the drive system, a single drive system can be combined with drive component 1 to form a load testing device: the drive system drives drive component 1, and when transmitting small torques, the transmission mechanism 2 can use a belt 24 to transmit power. If the transmitted torque is relatively large, the belt 24 transmission method can be replaced with a gearbox. At this time, drive component 1 can be combined with the drive system to form a loading system to achieve synchronous loading test of the dual drive system; or one of the transmission mechanisms 2 can be disconnected to achieve loading test of the dual drive system under different loads at the same speed or under the same speed reverse loading condition. The system structure is simple and the bench cost is much lower than that of the traditional dual dynamometer system.

[0046] like Figure 1 As shown, in one embodiment, the two bearing seats 23 of the same transmission mechanism 2 are detachably installed. This allows for adjustment of the distance between the first shaft 21 and the second shaft 22, and also facilitates adjustment of the length of the belt 24 or the gearbox, enabling speed increase, decrease, or constant speed control.

[0047] like Figure 1As shown, in one embodiment, the test device also includes a test platform for supporting the dual drive system. The test platform is located between the two transmission mechanisms 2. When the dual drive system is placed on the test platform, the dual drive system can be connected to the second shaft 22 of the transmission mechanism 2 through the transmission shaft 4, which facilitates the connection between the transmission shaft 4 and the transmission mechanism 2, and also reduces the area occupied by the test device.

[0048] like Figure 1 As shown, in one embodiment, the two ends of the first shaft 21 of the first transmission mechanism 2 are connected to the drive member 1 and the first connecting shaft 311 via the transmission shaft 4; one end of the first shaft 21 of the second transmission mechanism 2 is connected to the second connecting shaft 312 via the transmission shaft 4. In this way, the power of the drive member 1 can be transmitted to the two transmission mechanisms 2 respectively; of course, when it is a three-in-one drive system, the power can also be transmitted to the drive member 1.

[0049] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A testing device for a dual-drive system, characterized in that, include: At least one drive component; Two sets of transmission mechanisms are provided. The first shaft of the first set of transmission mechanisms is connected to the driving component. The second shafts of the two sets of transmission mechanisms are respectively used to connect to the dual drive system. The first shaft is connected to the second shaft. A power transmission direction control mechanism is located between the two sets of transmission mechanisms. The power transmission direction control mechanism is connected to the first shaft of the two sets of transmission mechanisms. The power transmission direction control mechanism can change the power transmission direction and is used to transmit the power direction of the driving component to the second set of transmission mechanisms.

2. The testing device for a dual-drive system according to claim 1, characterized in that, The power transmission direction control mechanism includes a unidirectional control mechanism, which can be engaged or disengaged. When engaged, the unidirectional control mechanism is connected to the first shaft of the two transmission mechanisms. When disengaged, the unidirectional control mechanism is disconnected from the first shaft of the two transmission mechanisms.

3. The testing device for a dual-drive system according to claim 2, characterized in that, The unidirectional control mechanism includes a first connecting shaft and a second connecting shaft. The first connecting shaft is connected to the first shaft of the first set of the transmission mechanism, and the second connecting shaft is connected to the first shaft of the second set of the transmission mechanism. Both the first connecting shaft and the second connecting shaft are provided with a first gear. The unidirectional control mechanism also includes a unidirectional controller and a gear sleeve connected to the unidirectional controller. The unidirectional controller can move along the axial direction of the first connecting shaft to control the gear sleeve to connect or disconnect with the two first gears.

4. The testing device for a dual-drive system according to claim 3, characterized in that, The power transmission direction control mechanism includes a reversing control mechanism, which can be engaged or disengaged. When engaged, the reversing control mechanism is connected to the first shaft of the two sets of transmission mechanisms to change the power transmission direction. When disengaged, the reversing control mechanism is disconnected from the first shaft of the two sets of transmission mechanisms.

5. The testing apparatus for a dual-drive system according to claim 4, characterized in that, The reversing control mechanism includes a second gear sleeved on the first connecting shaft and the second connecting shaft, a reversing controller, and a third gear connected to the reversing controller. The reversing controller can move in an axial direction perpendicular to the first connecting shaft to control the third gear to mesh or disengage with the two second gears.

6. The testing apparatus for a dual-drive system according to any one of claims 1 to 5, characterized in that, The transmission mechanism includes multiple bearing seats, with the two ends of the first shaft connected to two of the bearing seats, and the two ends of the second shaft connected to two of the bearing seats.

7. The testing apparatus for a dual-drive system according to claim 6, characterized in that, The transmission mechanism further includes multiple transmission wheels and a belt. The multiple transmission wheels are respectively mounted on the first shaft and the second shaft. The belt is connected to the corresponding multiple transmission wheels, or; The transmission mechanism includes a gearbox, which can be connected to the first shaft and the second shaft respectively.

8. The testing apparatus for a dual-drive system according to claim 6, characterized in that, The two bearing seats of the same transmission mechanism are installed in a detachable manner.

9. The testing apparatus for a dual-drive system according to any one of claims 1 to 5, characterized in that, The testing device also includes a test platform for supporting the dual-drive system, the test platform being located between the two transmission mechanisms.

10. The testing apparatus for a dual-drive system according to any one of claims 3 to 5, characterized in that, The first shaft of the first set of transmission mechanisms is connected to the driving member and the first connecting shaft at both ends via a transmission shaft; the first shaft of the second set of transmission mechanisms is connected to the second connecting shaft at one end via a transmission shaft.

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