Testing tool for gearbox

Abstract

The utility model relates to the technical field of test tools, and discloses a test tool for a gearbox, which comprises a workbench; the driving motor is arranged on the workbench and is provided with a first adapter shaft used for being connected with the input end of the gearbox; the load motor is arranged on the workbench and connected with the output end of the gearbox; the adapter assembly comprises an adapter plate and an auxiliary bearing, the adapter plate is arranged on the workbench and located on the side, facing the driving motor, of the gearbox, the first adapter shaft penetrates through the adapter plate, the auxiliary bearing is rotatably arranged on the adapter plate and arranged on the first adapter shaft in a sleeving mode, and the auxiliary bearing is used for limiting shaking of the first adapter shaft. By means of the structure, the first coupling shaft can be supported and limited by the auxiliary bearing, shaking of the first coupling shaft is reduced, and therefore stable transmission between the driving motor and the gearbox is achieved, and the internal structure of the gearbox is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of testing tooling, in particular to a testing tooling for a gearbox. Background Art

[0002] At present, the test fixture for the gearbox usually installs a drive motor and a load motor. Under the drive of the drive motor, the gearbox works and is connected to the load motor at the output end, and the load motor is used to evaluate the performance of the gearbox. However, the speed of the drive motor is very high, and the connection between the drive motor and the input end of the gearbox has the problem of unstable transmission, which causes damage to the internal structure of the gearbox. Utility Model Content

[0003] The purpose of the utility model is to provide a test fixture for a gearbox, which can ensure stable transmission between a drive motor and the gearbox.

[0004] In order to achieve the above object, the utility model provides a test tool for a gearbox, comprising:

[0005] Workbench;

[0006] A driving motor, which is arranged on the workbench and is provided with a first transfer shaft for connecting to an input end of a gearbox;

[0007] A load motor, arranged on the workbench and connected to an output end of the gearbox;

[0008] The adapter assembly includes an adapter plate and an auxiliary bearing, wherein the adapter plate is arranged on the workbench, the adapter plate is located on the side of the gearbox facing the drive motor, the first adapter shaft passes through the adapter plate, the auxiliary bearing is rotatably arranged on the adapter plate and sleeved on the first adapter shaft, and the auxiliary bearing is used to limit the shaking of the first adapter shaft.

[0009] In some embodiments of the present application:

[0010] The adapter plate includes a first plate body and a second plate body, the first plate body is arranged on the workbench, the second plate body is connected to the plate surface of the first plate body facing away from the drive motor, the auxiliary bearing is rotatably connected to the second plate body, and the first adapter shaft passes through the first plate body and the second plate body.

[0011] In some embodiments of the present application:

[0012] The first plate body is provided with a first pin hole, and the second plate body is provided with a second pin hole. The first pin hole and the second pin hole are correspondingly arranged and connected by a first pin.

[0013] In some embodiments of the present application:

[0014] The second plate body is also provided with a third pin hole, in which a second pin is arranged, and the second pin is also used to cooperate with the gearbox.

[0015] In some embodiments of the present application:

[0016] The second plate body is provided with a first through hole, the first transfer shaft passes through the second plate body through the first through hole, and the auxiliary bearing is rotatably connected in the first through hole.

[0017] In some embodiments of the present application:

[0018] The first plate body is provided with a second through hole, and the first adapter shaft passes through the first plate body via the second through hole. In the axial direction of the first adapter shaft, the projection contour of the inner ring of the auxiliary bearing completely falls into the projection contour of the second through hole.

[0019] In some embodiments of the present application:

[0020] The adapter assembly further includes a cover plate, which is sleeved on the first adapter shaft and covers the auxiliary bearing. The cover plate is located on a side of the auxiliary bearing away from the drive motor.

[0021] In some embodiments of the present application:

[0022] The load motor is provided with a second transfer shaft, and the second transfer shaft is used to connect to the output end of the gearbox.

[0023] In some embodiments of the present application, the test tool for the gearbox further includes:

[0024] A reducer is arranged on the workbench, the load motor is connected to the output end of the reducer through the second adapter shaft, the input end of the reducer is provided with a third adapter shaft, and the third adapter shaft is used to connect to the output end of the gearbox.

[0025] In some embodiments of the present application, the test tool for the gearbox further includes:

[0026] A bracket is connected to the workbench, and the reducer is arranged on the workbench through the bracket.

[0027] The utility model provides a gearbox testing tool, which has the following beneficial effects compared with the prior art:

[0028] The test fixture of the gearbox of the utility model comprises a workbench and a driving motor arranged on the workbench, a load click and a transfer assembly, the transfer assembly comprises a transfer plate arranged on the workbench and an auxiliary bearing that can rotate on the transfer plate, and the auxiliary bearing is sleeved on a first transfer shaft connecting the gearbox and the driving motor. Through such a structure, the first transfer shaft can be supported and limited by the auxiliary bearing, reducing the shaking of the first transfer shaft, thereby ensuring stable transmission between the driving motor and the gearbox and avoiding damage to the internal structure of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a gearbox test fixture according to an embodiment of the utility model.

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure from another angle.

[0031] Figure 3 It is a structural schematic diagram of a switching assembly and a gearbox according to an embodiment of the utility model.

[0032] Figure 4 It is a structural schematic diagram of the adapter assembly of an embodiment of the utility model.

[0033] Figure 5 It is a structural schematic diagram of the first plate body of an embodiment of the utility model.

[0034] Figure 6 It is a schematic structural diagram of the second plate body and the auxiliary bearing of an embodiment of the utility model.

[0035] Figure 7 It is a schematic diagram of the internal structure of the reducer of an embodiment of the utility model.

[0036] In the figure, 1. adapter assembly; 2. first adapter shaft; 3. second adapter shaft; 4. reducer; 5. third adapter shaft; 6. bracket; 7. gearbox; 11. adapter plate; 12. auxiliary bearing; 13. cover plate; 111. first plate body; 112. second plate body; 113. first pin; 114. second pin; 1111. first pin hole; 1112. second through hole; 1121. second pin hole; 1122. third pin hole; 1123. first through hole. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0041] For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Please refer to Figure 1 and Figure 2 A test fixture for a gearbox 7 according to a preferred embodiment of the utility model comprises: a workbench, a drive motor, a load motor and a switching assembly 1.

[0043] The driving motor is arranged on the workbench and is provided with a first transfer shaft 2 for connecting the input end of the gearbox 7. The driving motor is connected to the gearbox 7 through the first transfer shaft 2 and drives the gearbox 7 to work.

[0044] The load motor is arranged on the workbench and connected to the output end of the gearbox 7.

[0045] The gearbox 7 outputs the rotation speed to the load motor, and the load motor is responsible for evaluating the performance of the gearbox 7.

[0046] The adapter assembly 1 includes an adapter plate 11 and an auxiliary bearing 12. The adapter plate 11 is set on the workbench. The adapter plate 11 is located on the side of the gearbox 7 facing the drive motor. The first adapter shaft 2 passes through the adapter plate 11. The auxiliary bearing 12 is rotatably set on the adapter plate 11 and sleeved on the first adapter shaft 2. The auxiliary bearing 12 is used to limit the shaking of the first adapter shaft 2.

[0047] The adapter plate 11 can limit the position of the auxiliary bearing 12, and the setting of the auxiliary bearing 12 can limit the position of the first adapter shaft 2. The first adapter shaft 2 can be supported and limited by the auxiliary bearing 12 to reduce the shaking of the first adapter shaft 2, thereby allowing stable transmission between the drive motor and the gearbox 7 and avoiding damage to the internal structure of the gearbox 7.

[0048] In some embodiments, please refer to Figure 3-Figure 4 The adapter plate 11 includes a first plate body 111 and a second plate body 112. The first plate body 111 is set on the workbench, and the second plate body 112 is connected to the plate surface of the first plate body 111 away from the drive motor. The auxiliary bearing 12 is rotatably connected to the second plate body 112, and the first adapter shaft 2 passes through the first plate body 111 and the second plate body 112.

[0049] The first plate body 111 is used to fix the adapter plate 11 on the workbench. At the same time, the first plate body 111 is also used to fix the second plate body 112. The second plate body 112 is used to provide conditions for the setting of the auxiliary bearing 12. The second plate body 112 can also be connected to the gearbox 7 to limit the position of the gearbox 7, and cooperate with the auxiliary bearing 12 to reduce the shaking of the first adapter shaft 2.

[0050] The first plate 111 and the second plate 112 can be connected by bolts. In order to ensure the centering of the drive motor and the gearbox 7, a first rotating shaft connection is provided, and a plurality of connecting bolts of the first plate 111 and the second plate 112 are provided and arranged around the auxiliary bearing 12.

[0051] In some embodiments, please refer to Figure 5 and Figure 6 A first pin hole 1111 is provided on the first plate body 111 , and a second pin hole 1121 is provided on the second plate body 112 . The first pin hole 1111 and the second pin hole 1121 are correspondingly provided and connected through the first pin 113 .

[0052] The setting of the first pin hole 1111 and the second pin hole 1121 enables the first plate body 111 and the second plate body 112 to be positioned by the first pin 113, which can make the installation position of the second plate body 112 on the first plate body 111 more precise, ensure the centering of the drive motor and the gearbox 7, and improve the transmission stability between the drive motor and the gearbox 7.

[0053] In this embodiment, two first pins 113 are provided and are respectively disposed at opposite corners of the second plate body 112 .

[0054] In some embodiments, a third pin hole 1122 is further provided on the second plate body 112 , and a second pin 114 is provided in the third pin hole 1122 . The second pin 114 is also used to cooperate with the gearbox 7 .

[0055] The second plate 112 can be positioned with the gearbox 7 via the second pin 114 , which can make the installation position of the gearbox 7 on the second plate 112 more precise, thereby ensuring the centering of the drive motor and the gearbox 7 and improving the transmission stability between the drive motor and the gearbox 7 .

[0056] In this embodiment, two second pins 114 are provided and are respectively disposed at the other diagonal corners of the second plate body 112 .

[0057] In some embodiments, the second plate body 112 is provided with a first through hole 1123 , the first transfer shaft 2 passes through the second plate body 112 via the first through hole 1123 , and the auxiliary bearing 12 is rotatably connected in the first through hole 1123 .

[0058] By setting the first through hole 1123, the auxiliary bearing 12 rotates in the first through hole 1123, which can limit the radial displacement of the auxiliary bearing 12 on the first adapter shaft 2, thereby reducing the shaking of the first adapter shaft 2, thereby allowing stable transmission between the drive motor and the gearbox 7 and avoiding damage to the internal structure of the gearbox 7.

[0059] In some embodiments, the first plate body 111 is provided with a second through hole 1112 , and the first adapter shaft 2 passes through the first plate body 111 via the second through hole 1112 . In the axial direction of the first adapter shaft 2 , the projection contour of the inner ring of the auxiliary bearing 12 completely falls into the projection contour of the second through hole 1112 .

[0060] In other words, the size of the second through hole 1112 is larger than that of the first through hole 1123, so as to avoid the problem of poor centering caused by the processing error between the first through hole 1123 and the second through hole 1112, reduce the processing accuracy requirements of the second through hole 1112, and reduce the processing difficulty of the test tooling for the gearbox 7.

[0061] In some embodiments, the adapter assembly 1 further includes a cover plate 13, which is sleeved on the first adapter shaft 2 and covers the auxiliary bearing 12. The cover plate 13 is located on a side of the auxiliary bearing 12 away from the drive motor.

[0062] The provision of the cover plate 13 can protect the auxiliary bearing 12 from external environmental interference, thereby improving the transmission stability between the drive motor and the gearbox 7.

[0063] In some embodiments, a second transfer shaft 3 is provided on the load motor, and the second transfer shaft 3 is used to connect to an output end of the gearbox 7 .

[0064] The second transfer shaft 3 is also connected by a shaft to ensure the transmission stability between the gearbox 7 and the load motor.

[0065] In some embodiments, please refer to Figure 2 and Figure 7 The test fixture for the gearbox 7 also includes a reducer 4, which is arranged on a workbench. The load motor is connected to the output end of the reducer 4 through a second adapter shaft 3. The input end of the reducer 4 is provided with a third adapter shaft 5, which is used to connect to the output end of the gearbox 7.

[0066] With the continuous development of new energy vehicles, the output speed of the gearbox 7 is getting higher and higher. The maximum speed of the load motor in the prior art is generally less than 3000rpm, while the output speed of some gearboxes 7 can reach up to 7200rpm, far exceeding the limit speed of the load motor in the prior art. Therefore, the reducer 4 is provided to maintain the deceleration of the load motor within the working range it can afford, thereby improving the versatility of the test tooling for the gearbox 7.

[0067] In addition, due to the high rotation speed, there are also higher requirements for the alignment between the drive motor and the gearbox 7. In this embodiment, by providing the auxiliary bearing 12, the first pin 113 and the second pin 114, the alignment between the drive motor and the gearbox 7 can be ensured, and the smoothness of the transmission between the drive motor and the gearbox 7 can be ensured.

[0068] In some embodiments, the test fixture for the gearbox 7 further includes a bracket 6 , the bracket 6 is connected to a workbench, and the reducer 4 is arranged on the workbench through the bracket 6 .

[0069] The setting of the bracket 6 enables the reducer 4 to be fixed on the workbench, so that the transmission between the gearbox 7, the reducer 4 and the load motor can be smoothly transmitted.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A test fixture for a gearbox, characterized in that: include: Workbench; A driving motor, which is arranged on the workbench and is provided with a first transfer shaft for connecting to an input end of a gearbox; A load motor, arranged on the workbench and connected to an output end of the gearbox; The adapter assembly includes an adapter plate and an auxiliary bearing, wherein the adapter plate is arranged on the workbench, the adapter plate is located on the side of the gearbox facing the drive motor, the first adapter shaft passes through the adapter plate, the auxiliary bearing is rotatably arranged on the adapter plate and sleeved on the first adapter shaft, and the auxiliary bearing is used to limit the shaking of the first adapter shaft.

2. The test fixture for a gearbox according to claim 1, characterized in that: The adapter plate includes a first plate body and a second plate body, the first plate body is arranged on the workbench, the second plate body is connected to the plate surface of the first plate body facing away from the drive motor, the auxiliary bearing is rotatably connected to the second plate body, and the first adapter shaft passes through the first plate body and the second plate body.

3. The test fixture for a gearbox according to claim 2, characterized in that: The first plate body is provided with a first pin hole, and the second plate body is provided with a second pin hole. The first pin hole and the second pin hole are correspondingly arranged and connected by a first pin.

4. The test fixture for a gearbox according to claim 2, characterized in that: The second plate body is also provided with a third pin hole, in which a second pin is arranged, and the second pin is also used to cooperate with the gearbox.

5. The test tool for a gearbox according to claim 2, characterized in that: The second plate body is provided with a first through hole, the first transfer shaft passes through the second plate body through the first through hole, and the auxiliary bearing is rotatably connected in the first through hole.

6. The test fixture for a gearbox according to claim 5, characterized in that: The first plate body is provided with a second through hole, and the first adapter shaft passes through the first plate body via the second through hole. In the axial direction of the first adapter shaft, the projection contour of the inner ring of the auxiliary bearing completely falls into the projection contour of the second through hole.

7. The test tool for a gearbox according to claim 5, characterized in that: The adapter assembly further includes a cover plate, which is sleeved on the first adapter shaft and covers the auxiliary bearing. The cover plate is located on a side of the auxiliary bearing away from the drive motor.

8. The test fixture for a gearbox according to claim 1, characterized in that: The load motor is provided with a second transfer shaft, and the second transfer shaft is used to connect to the output end of the gearbox.

9. The test fixture for a gearbox according to claim 8, characterized in that: Also includes: A reducer is arranged on the workbench, the load motor is connected to the output end of the reducer through the second adapter shaft, the input end of the reducer is provided with a third adapter shaft, and the third adapter shaft is used to connect to the output end of the gearbox.

10. The test fixture for a gearbox according to claim 9, characterized in that: Also includes: A bracket is connected to the workbench, and the reducer is arranged on the workbench through the bracket.

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