Testing device of dual-drive system

Abstract

The invention relates to the technical field of driving system testing, and provides a testing device for a dual-driving system, and the device comprises at least one driving part; a first shaft of one of the two sets of transmission mechanisms is in transmission connection with the driving part, second shafts of the two sets of transmission mechanisms are respectively used for being connected with a dual-driving system, and the first shaft is in transmission connection with the second shafts; and 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 shafts of the two sets of transmission mechanisms, and 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 mechanism. According to the technical scheme, synchronous testing or independent testing of the two sets of independent electric drive systems can be achieved on the premise that the testing system is not transformed at all, and therefore the testing cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of drive system testing, and in particular to a testing device for a dual drive system. Background Art

[0002] The dual-drive system is a new product configuration that is being developed by many car companies. The dual-drive system has two independent electric drive systems. Each drive system is composed of a motor + reducer assembly, which can drive one wheel independently to achieve completely independent control and drive of the two wheels, adding more possibilities for vehicle control. By controlling the rotation direction of the wheels, it is easy to achieve a U-turn on the spot.

[0003] Normally, the two electric drive systems operate independently. In the early stages of product development, multiple tests such as lubrication, ventilation, and shaft sealing need to be conducted on the electric drive system to ensure that the product functions meet the requirements. Due to the particularity of the product structure, the dual-drive system has two independent drive systems, and the traditional test benches used to conduct the above tests have only one power output terminal, which basically cannot meet the above test requirements. Summary of the invention

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

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a testing device for a dual-drive system, comprising: at least one driving member; two sets of transmission mechanisms, wherein the first shaft of one set of the transmission mechanisms is transmission-connected to the driving member, 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 transmission-connected to the second shaft; a power transmission direction control mechanism, located between the two sets of the transmission mechanisms, the power transmission direction control mechanism is connected to the first shafts of the two sets of the transmission mechanisms, and the power transmission direction control mechanism can change the power transmission direction, and is used to transmit the power direction of the driving member to the other set of the transmission mechanisms.

[0007] As an embodiment, the power transmission direction control mechanism includes a same-direction control mechanism, which can be engaged or disconnected. When the same-direction control mechanism is engaged, it is connected to the first shafts of the two sets of transmission mechanisms. When the same-direction control mechanism is disconnected, it is disconnected from the first shafts of the two sets of transmission mechanisms.

[0008] As an embodiment, the same-direction control mechanism includes a first connecting shaft and a second connecting shaft, the first connecting shaft is connected to the first shaft of one set of the transmission mechanism, the second connecting shaft is connected to the first shaft of the other set of the transmission mechanism, the first connecting shaft and the second connecting shaft are both provided with a first gear, the same-direction control mechanism also includes a same-direction controller and a gear sleeve connected to the same-direction controller, the same-direction 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] As an embodiment, the power transmission direction control mechanism includes a reversing control mechanism, which can be engaged or disconnected. When the reversing control mechanism is engaged, it is connected to the first shafts of the two sets of transmission mechanisms to change the power transmission direction. When the reversing control mechanism is disconnected, it is disconnected from the first shafts of the two sets of transmission mechanisms.

[0010] As an 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, and the reversing controller can move in an axial direction perpendicular to the first connecting shaft to control the third gear to engage or disconnect with the two second gears.

[0011] As an embodiment, the transmission mechanism includes a plurality of bearing seats, the two ends of the first shaft are connected to two of the bearing seats, and the two ends of the second shaft are connected to two of the bearing seats.

[0012] As an embodiment, the transmission mechanism also includes a plurality of transmission wheels and belts, the plurality of transmission wheels are respectively mounted on the first shaft and the second shaft, the belts are connected to the corresponding plurality of transmission wheels, or; the transmission mechanism includes a gear box, and the gear box can be respectively connected to the first shaft and the second shaft for transmission.

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

[0014] As an implementation manner, the testing device further comprises a platform to be tested for carrying the dual drive system, and the platform to be tested is located between the two sets of transmission mechanisms.

[0015] As an embodiment, both ends of the first shaft of one set of the transmission mechanism are connected to the driving member and the first connecting shaft through a transmission shaft; and one end of the first shaft of another set of the transmission mechanism is connected to the second connecting shaft through 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 one set of transmission mechanisms is connected to the driving member, and the second shafts of the two sets of transmission mechanisms are both connected to the dual drive system for transmission. The first shaft in each set of transmission mechanisms is connected to the second shaft for transmission. A power transmission direction control mechanism is also provided between the two sets of transmission mechanisms. The power transmission direction control mechanism is connected to the first shafts of the two sets of transmission mechanisms. The power transmission direction control mechanism can transmit power. In this way, when the driving member generates power, the transmission mechanism connected to the driving member can transmit the power to one of the electric drive systems through the transmission connection between the first shaft and the second shaft; the power of the other set of transmission mechanisms is transmitted to the first shaft of the other set of transmission mechanisms through the power transmission direction control mechanism, and then transmitted from the first shaft to the second shaft, to complete the test of the other set of electric drive system. The power transmission direction control mechanism can also change the power transmission direction, thereby realizing the same direction or reverse direction test of the dual drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a testing device for a dual-drive system provided in an embodiment of the present application.

[0020] Icons: 1-driving member; 2-transmission mechanism; 21-first shaft; 22-second shaft; 23-bearing seat; 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-transmission shaft. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] like Figure 1As shown, the embodiment of the present application provides a test device for a dual-drive system, including: at least one driving member 1, and also including two sets of transmission mechanisms 2, each set of transmission mechanisms 2 including a first shaft 21 and a second shaft 22, by providing two sets of transmission mechanisms 2, wherein the first shaft 21 of one set of transmission mechanisms 2 is connected to the driving member 1, and the second shafts 22 of the two sets of transmission mechanisms 2 are both connected to the dual-drive system for transmission, and the first shaft 21 of each set of transmission mechanisms 2 is connected to the second shaft 22 for transmission, and a power transmission direction control mechanism 3 is further provided between the two sets of transmission mechanisms 2, and the power transmission direction control mechanism 3 is connected to the first shafts 21 of the two sets of transmission mechanisms 2, and the power transmission direction control mechanism 3 can transmit power Force, in this way, when the driving member 1 generates power, the transmission mechanism 2 connected to the driving member 1 can transmit the power to one of the electric drive systems through the transmission connection between the first shaft 21 and the second shaft 22; the power of the other transmission mechanism 2 is transmitted to the first shaft 21 of the other 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 embodiment of the present application without the need to modify the dual drive system, realizing the synchronous forward or backward operation or operation test of two independent electric drive systems or the opposite direction.

[0024] Optionally, the test device of the dual drive system of the embodiment of the present application is installed in a detachable manner as a whole. Therefore, the test device of the dual drive system of the embodiment of the present application can be combined with the original tilting test bench to realize lubrication, ventilation and shaft sealing tests of the dual electric drive system at different pitch and roll angles.

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

[0026] Optionally, the driving component 1 can be a driving motor, and the dual driving system can be tested; when the dual driving systems are three-in-one driving systems, the driving component 1 can also be a loading motor for the three-in-one driving system.

[0027] Optionally, in some cases, two driving members 1 may be provided, that is, the two driving members 1 are respectively connected to the first shaft 21 of the transmission mechanism 2, so that the two driving members 1 can separately test the driving systems of the corresponding sides.

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

[0029] Optionally, if a separate drive system in the dual electric drive system adopts 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 can complete the towing loading test between the dual drive systems themselves. The drive component 1 is disconnected, and the electric drive systems on both sides operate in torque and speed modes respectively. In this way, dynamic and steady-state tests can be achieved between the two electric drive systems without the need for an additional power drive system, which further reduces the investment in test equipment and achieves lower-cost reliable durability testing.

[0030] Optionally, the second shafts 22 of the two 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 member 1 can also test a separate drive system.

[0032] like Figure 1 As shown, as an embodiment, the power transmission direction control mechanism 3 includes a same-direction control mechanism 31, and the same-direction control mechanism 31 can be engaged or disconnected. When the same-direction control mechanism 31 is engaged, it is connected to the first shafts 21 of the two sets of transmission mechanisms 2, thereby realizing a synchronous operation test of the dual drive system; when the same-direction control mechanism 31 is disconnected, it is disconnected from the first shafts 21 of the two sets of transmission mechanisms 2, thereby realizing an operation test of a single drive system.

[0033] like Figure 1 As shown, as an embodiment, the same-direction 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 one set of transmission mechanisms 2, and the second connecting shaft 312 is connected to the first shaft 21 of the other set of transmission mechanisms 2, and the first connecting shaft 311 and the second connecting shaft 312 are both provided with a first gear 313, and the same-direction control mechanism 31 also includes a same-direction controller 314 and a gear sleeve 315 connected to the same-direction controller 314, and the same-direction controller 314 can move along the axial direction of the first connecting shaft 311 to control the connection or disconnection of the gear sleeve 315 with the two first gears 313, thereby realizing that the same-direction control mechanism 31 can transmit the power generated by the driving member 1 from one set of transmission mechanisms 2 to the other set of transmission mechanisms 2 without changing the transmission direction, thereby 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 combined, the transmission mechanism 2 directly connected to the driving member 1 can also be disconnected, so that the driving member 1 can also realize the operation test of the separate driving system.

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

[0037] Optionally, when the reversing control mechanism 316 and the same-direction control mechanism 31 are both in the disconnected position, the first connecting shaft 311 and the second connecting shaft 312 on both sides are in a disconnected state and can rotate freely with respect to each other; when the dual drive system needs to be reversed, the reversing control mechanism 316 is in a coupled state and the same-direction control mechanism 31 is in a disconnected state; when the dual drive system needs to rotate forward synchronously, the same-direction control mechanism 31 is in a coupled state, and the reversing control mechanism 316 is in a disconnected state.

[0038] like Figure 1 As shown, as an 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 in an axial direction perpendicular to the first connecting shaft 311 to control the third gear 318 to engage 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 driving member 1 from one set of transmission mechanisms 2 to the other set of transmission mechanisms 2, thereby realizing a synchronous reversal test of the dual drive system.

[0039] Optionally, the second gear 317 and the third gear 318 may 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 box body, and the same direction control mechanism 31 and the reversing control mechanism 316 are both arranged in the box body. The box body can provide stable support so that the power transmission direction control mechanism 3 can transmit power stably; a plurality of bearing seats 23 can also be arranged in the box body to support the first connecting shaft 311 and the second connecting shaft 312 respectively.

[0041] like Figure 1 As shown, as an embodiment, the transmission mechanism 2 includes a plurality of bearing seats 23, both ends of the first shaft 21 are connected to two bearing seats 23, and both ends of the second shaft 22 are connected to two bearing seats 23. Each set of transmission mechanism 2 is provided with a plurality of 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, as an embodiment, the transmission mechanism 2 also includes a plurality of transmission wheels and a belt 24, and the plurality of transmission wheels are respectively mounted on the first shaft 21 and the second shaft 22, and the belt 24 is connected to the corresponding plurality of transmission wheels, so that the first shaft 21 of the transmission mechanism 2 can transmit power to the second shaft 22, and then connect with the drive system through the second shaft 22, so as to realize the test 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 replaced to achieve speed increase, speed decrease or constant speed control.

[0044] Of course, the transmission wheel and the belt 24 can also be replaced by a gear box, and the gear box is respectively connected to the first shaft 21 and the second shaft 22 to achieve power transmission.

[0045] Optionally, if a separate 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 a separate drive system can be combined with the drive member 1 to form a load test device: the drive system drives the drive member 1, and the transmission mechanism 2 can use the belt 24 to transmit power when transmitting a smaller torque. If the transmitted torque is relatively large, the belt 24 transmission method can be replaced with a gear box. At this time, the drive member 1 can be combined with the drive system to form a loading system to achieve the test of the synchronous loading condition of the dual drive system; or one of the transmission mechanisms 2 can be disconnected to achieve the test of different loading loads of the dual drive system at the same speed or the loading test under the same speed reversal 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, as an embodiment, the two bearing seats 23 of the same transmission mechanism 2 are installed in a detachable manner. Thus, the distance between the first shaft 21 and the second shaft 22 can be adjusted, and the length of the belt 24 or the length of the gear box can be adjusted to achieve speed increase, speed decrease or constant speed control.

[0047] like Figure 1As shown, as an embodiment, the test device also includes a test platform for carrying the dual drive system, and the test platform is located between the two sets of 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 occupied area of ​​the test device.

[0048] like Figure 1 As shown, as an embodiment, both ends of the first shaft 21 of one set of transmission mechanisms 2 are connected to the driving member 1 and the first connecting shaft 311 through the transmission shaft 4; one end of the first shaft 21 of the other set of transmission mechanisms 2 is connected to the second connecting shaft 312 through the transmission shaft 4, so that the power of the driving member 1 can be transmitted to the two sets of transmission mechanisms 2 respectively; of course, when used as a three-in-one drive system, the power can also be transmitted to the driving member 1.

[0049] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0051] 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.

Claims

1. A test device for a dual drive system, characterized in that: include: at least one drive member; Two sets of transmission mechanisms, wherein the first shaft of one set of the transmission mechanisms is in transmission connection with the driving member, and the second shafts of the two sets of transmission mechanisms are respectively used to be connected with a dual drive system, and the first shaft is in transmission connection with the second shaft; The power transmission direction control mechanism is located between the two sets of the transmission mechanisms. The power transmission direction control mechanism is connected to the first shafts of the two sets of the 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 member to the other set of the transmission mechanisms.

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

3. The testing device of the dual drive system according to claim 2, characterized in that: The same-direction control mechanism includes a first connecting shaft and a second connecting shaft, the first connecting shaft is connected to the first shaft of one set of the transmission mechanism, the second connecting shaft is connected to the first shaft of the other set of the transmission mechanism, the first connecting shaft and the second connecting shaft are both provided with a first gear, the same-direction control mechanism also includes a same-direction controller and a gear sleeve connected to the same-direction controller, the same-direction 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 dual drive system testing device according to claim 3, characterized in that: The power transmission direction control mechanism includes a reversing control mechanism, which can be engaged or disconnected. When the reversing control mechanism is engaged, it is connected to the first shafts of the two transmission mechanisms to change the power transmission direction. When the reversing control mechanism is disconnected, it is disconnected from the first shafts of the two transmission mechanisms.

5. The dual drive system testing device 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 engage or disconnect with the two second gears.

6. The dual drive system testing device according to any one of claims 1 to 5, characterized in that: The transmission mechanism includes a plurality of bearing seats, the two ends of the first shaft are connected to two of the bearing seats, and the two ends of the second shaft are connected to two of the bearing seats.

7. The dual drive system testing device according to claim 6, characterized in that: The transmission mechanism further comprises a plurality of transmission wheels and belts, wherein the plurality of transmission wheels are respectively mounted on the first shaft and the second shaft, and the belts are connected to the corresponding plurality of transmission wheels, or; The transmission mechanism includes a gear box, and the gear box can be respectively connected to the first shaft and the second shaft.

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

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

10. The testing device of the dual drive system according to any one of claims 3 to 5, characterized in that: Both ends of the first shaft of one set of the transmission mechanism are connected to the driving member and the first connecting shaft through a transmission shaft; one end of the first shaft of the other set of the transmission mechanism is connected to the second connecting shaft through a transmission shaft.

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