CN221764881U - Gearbox test fixture - Google Patents

Abstract

The present application discloses a gearbox test fixture, which relates to the technical field of gearboxes, and includes a support frame and a connector, wherein the connector is arranged on the support frame; the connector includes a connecting shaft and a connecting shaft housing, wherein the connecting shaft is axially rotated and arranged on the support frame through the connecting shaft housing, wherein one end of the connecting shaft is connected to the gearbox rotor, and the other end is connected to the test bench transmission shaft. Thus, the test fixture can be applied to the case of a longer test bench transmission shaft, and the connecting shaft is connected to the connecting shaft housing through a bearing, and the bearing provides key support for the gearbox rotor, the connecting shaft and the test bench transmission shaft, and uses the bearing to reduce torque loss, thereby solving the serious problem of flying cars that may occur at high speeds.

Description

A gearbox test tool

Technical Field

The present application relates to the technical field of gearboxes, and in particular to a gearbox testing tool.

Background Art

During the gearbox bench test, the input speed reaches 1000-2000rpm, which is a relatively high speed. If the rotor inside the gearbox is directly connected to the test bench drive shaft, the longer test bench drive shaft and rotor only rely on bearings at both ends for support. The moment of inertia generated at high speed is large, which may result in serious runaway consequences.

Utility Model Content

In order to avoid the problem of gear running away, the present application provides a gearbox test tool.

The present application provides a gearbox test fixture that adopts the following technical solution.

A gearbox test fixture comprises a support frame and a connector, wherein the connector is arranged on the support frame; the connector comprises a connecting shaft and a connecting shaft housing, wherein the connecting shaft is axially rotatably arranged on the support frame through the connecting shaft housing, one end of the connecting shaft is connected to the gearbox rotor, and the other end is connected to the test bench transmission shaft.

By adopting the above technical solution, the gearbox can be set on the support frame through the setting of the support frame, and the connecting shaft can also be set on the support frame, so as to realize the relative position setting of the gearbox and the connecting shaft, and facilitate the transmission connection. By setting the connector, the gearbox rotor and the test stand transmission shaft do not need to be directly connected, and the connection between the longer test stand transmission shaft and the gearbox rotor can be realized.

Optionally, the connecting shaft is divided into two sections, one section is the rotor connecting shaft, and the other section is the transmission shaft connecting shaft; one end of the transmission shaft connecting shaft is coaxially connected to the other end of the rotor connecting shaft, and is circumferentially fixedly connected, one end of the rotor connecting shaft is connected to the gearbox rotor, and the other end of the transmission shaft connecting shaft is connected to the test bench transmission shaft.

By adopting the above technical solution, the connecting shaft is divided into two ends, namely, a rotor connecting shaft and a transmission shaft connecting shaft, which facilitates the use of the connecting body, makes assembly and disassembly more convenient, and improves the efficiency of the gearbox bench test.

Optionally, the other end of the rotor connecting shaft is circumferentially fixedly connected to one end of the transmission shaft connecting shaft via a spline.

By adopting the above technical solution, the connecting shafts at both ends are connected by splines, which meets the requirements of circumferential connection transmission, and the connection is simple and reliable, and the assembly and disassembly are convenient.

Optionally, the transmission shaft connecting shaft is provided with a central through hole, the other end of the rotor connecting shaft passes through the central through hole, and the other end portion passing through the central through hole is provided with a thread, which is tightened with a nut to abut against the other end portion of the transmission shaft connecting shaft.

By adopting the above technical solution, through the setting of the nut, after tightening the nut, the axial connection between the transmission shaft connecting shaft and the rotor connecting shaft is achieved, axial fixation is achieved, and the connection transmission stability is improved.

Optionally, a rotor connecting flange is provided at one end of the rotor connecting shaft, and is connected to the gearbox rotor through the rotor connecting flange by bolts.

By adopting the above technical solution and setting the rotor connecting flange, the quick assembly, connection and disassembly with the gearbox rotor can be achieved by bolts. The technology is mature, the cost is low, and the connection is simple and reliable.

Optionally, a transmission shaft connecting flange is provided at the other end of the transmission shaft connecting shaft, and is connected to the stand transmission shaft through the transmission shaft connecting flange by bolts.

By adopting the above technical solution and setting the transmission shaft connecting flange, rapid assembly, connection and disassembly with the test bench transmission shaft can be achieved through bolts. The technology is mature, the cost is low, and the connection is simple and reliable.

Optionally, a through hole is provided on the support frame, the connecting shaft is circumferentially rotatably connected to a connecting shaft shell via a bearing, the connecting shaft shell is arranged at the through hole position on the support frame, and the connecting shaft passes through the through hole.

By adopting the above technical solution, the connecting shaft can be fixed on the support frame through the setting of the connecting shaft housing, and a through hole is opened on the support frame to facilitate the passage of the connecting shaft, thereby providing key support for the gearbox rotor and the connecting shaft and utilizing bearings to reduce torque loss, thereby avoiding high-speed runaway.

Optionally, oil seals and adjustment rings are provided on both sides of the bearing.

By adopting the above technical solution, the bearing shell can be filled with lubricating oil to form a lubricating structure of the bearing, and the bearing lubrication can be achieved by adjusting the adjusting ring.

Optionally, the adjusting ring is threadedly connected to the connecting shaft housing.

By adopting the above technical solution, the installation of the adjustment ring is realized, which is convenient for adjustment.

Optionally, a dust cover is provided on a side of the oil seal away from the bearing.

By adopting the above technical solution, the dust cover is located on the outside, which can not only seal the lubricating oil to a certain extent, but also prevent external dust particles from entering the oil seal, thereby playing a dust-proof role.

In summary, this application at least includes the following beneficial effects:

1. One end of the connecting shaft is connected to the gearbox rotor, and the other end is connected to the test bench drive shaft. It can be applied to the case of a longer test bench drive shaft, and the connecting shaft is connected to the connecting shaft housing through a bearing. The bearing provides key support for the gearbox rotor, the connecting shaft and the test bench drive shaft, and uses the bearing to reduce torque loss and avoid high-speed runaway.

2. The connecting shafts at both ends are connected by splines to meet the requirements of circumferential connection transmission. The connection is simple and reliable, easy to assemble and disassemble, and increases the connection strength;

3. The support frame is installed on the gearbox housing and fixed to the bottom of the test bench to assist in supporting the weight of the gearbox;

4. The connecting shaft, connecting shaft housing, bearing, oil seal, adjusting ring and dust cover form an inner cavity, and the bearing housing can be filled with lubricating oil to form a lubrication structure of the bearing.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG. 1 is a schematic diagram of a gearbox test fixture structure.

FIG. 2 is a schematic diagram of the enlarged structure of a local area A in FIG. 1 .

FIG. 3 is a schematic diagram of the structure of a gearbox test fixture (with some brackets omitted).

FIG. 4 is a schematic diagram of the enlarged structure of a local area B in FIG. 3 .

Explanation of the accompanying drawings: 1. Support frame; 11. Through hole; 2. Connecting shaft; 21. Rotor connecting shaft; 22. Drive shaft connecting shaft; 23. Drive shaft connecting flange; 24. Rotor connecting flange; 25. Spline; 26. Nut; 3. Bearing; 4. Connecting shaft housing; 5. Oil seal; 6. Adjusting ring; 7. Dust cover; 8. Gearbox rotor; 9. Test bench drive shaft.

DETAILED DESCRIPTION

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

The present application is further described in detail below in conjunction with Figures 1 to 4.

The embodiment of the present application discloses a gearbox testing tool.

1 to 4 , a gearbox test fixture includes a support frame 1 and a connector.

The support frame 1 is a fixed support, the right end of the gearbox is connected to the left side of the support frame 1 , and the support frame 1 plays an auxiliary supporting role for the gearbox. A through hole 11 is opened on the support frame 1 at a position corresponding to the gearbox rotor 8 .

The connector includes a connecting shaft 2, a bearing 3 and a connecting shaft housing 4; the connecting shaft housing 4 is actually a bearing housing, which is fixedly connected to the right side of the support frame 1 by bolts; the bearing 3 is a deep groove ball bearing 3, and the bearing 3 is arranged in the bearing housing; the connecting shaft 2 is divided into two sections, the left section is a rotor connecting shaft 21, and the right section is a transmission shaft connecting shaft 22. The rotor connecting shaft 21 passes through the through hole 11 and penetrates into the connecting shaft housing 4, and is circumferentially connected to the connecting shaft housing 4 through the bearing 3. Through the setting of the connector, the gearbox rotor 8 and the bench transmission shaft 9 can be connected without direct connection, and the connection between the longer bench transmission shaft 9 and the gearbox rotor 8 can be realized. Dividing the connecting shaft 2 into two sections, the rotor connecting shaft 21 and the transmission shaft connecting shaft 22, facilitates the use of the connector, makes assembly and disassembly more convenient, improves the use efficiency of the gearbox bench test, provides key support for the gearbox rotor 8 and the connecting shaft 2, and uses the bearing 3 to reduce torque loss and avoid high-speed runaway.

The right end of the transmission shaft connecting shaft 22 is provided with a transmission shaft connecting flange 23, which has bolt holes, and is fixedly connected to the gantry transmission shaft 9 by passing bolts through the bolt holes. Through the setting of the transmission shaft connecting flange 23, the rapid assembly, connection and disassembly with the gantry transmission shaft 9 can be achieved by bolts, and the technology is mature, the cost is low, and the connection is simple and reliable. The left end of the rotor connecting shaft 21 is provided with a rotor connecting flange 24, which has bolt holes, and is fixedly connected to the gearbox rotor 8 by passing bolts through the bolt holes. Through the setting of the rotor connecting flange 24, the rapid assembly, connection and disassembly with the gearbox rotor 8 can be achieved by bolts, and the technology is mature, the cost is low, and the connection is simple and reliable.

The transmission shaft connecting shaft 22 is provided with a central through hole, and the right end of the rotor connecting shaft 21 passes through the central through hole from the left side, and is circumferentially fixedly connected by a spline 25. The connecting shaft 2 divided into two sections is connected by a spline 25, which meets the requirements of circumferential connection transmission, and the connection is simple and reliable, and it is easy to assemble and disassemble. The diameter of the end of the rotor connecting shaft 21 passing through the central through hole becomes smaller, and the end with a smaller diameter is provided with a thread, and a nut 26 is screwed in and tightened to abut against the right end of the transmission shaft connecting shaft 22. Through the setting of the nut 26, after the nut 26 is tightened, the axial connection between the transmission shaft connecting shaft 22 and the rotor connecting shaft 21 is realized, and the axial fixation is realized, and the stability of the connection transmission is improved.

The inner ring of the bearing 3 is sleeved on the rotor connecting shaft 21, the right end of the inner ring of the bearing 3 is abutted against the left end of the transmission shaft connecting shaft 22, the left end of the inner ring of the bearing 3 is abutted against the bearing step on the rotor connecting shaft 21, and the left end of the outer ring of the bearing 3 is abutted against the bearing step at the left end of the inner wall of the connecting shaft housing 4; an oil seal 5 is arranged on the left side of the bearing 3, and the oil seal 5 is arranged between the rotor connecting shaft 21 and the bearing step of the connecting shaft housing 4; a thread is provided on the right end of the inner wall of the connecting shaft housing 4, and an adjusting ring 6 is provided on the right side of the outer ring of the bearing 3, and a thread is provided on the left end outer ring of the adjusting ring 6 The left end of the adjusting ring 6 is threadedly connected to the right end of the inner wall of the connecting shaft housing 4; two oil seals 5 are arranged on the right side of the bearing 3, and the two oil seals 5 are arranged side by side in the axial direction between the adjusting ring 6 and the transmission shaft connecting shaft 22; the bearing housing can be filled with lubricating oil to form a lubrication structure of the bearing 3, and can be adjusted by the adjusting ring 6 to achieve lubrication of the bearing 3; a dust cover 7 is arranged on the side of the oil seal 5 away from the bearing 3, and the dust cover 7 is located on the outside. One is to play a certain sealing role for the lubricating oil, and the other is to prevent external dust particles from entering the oil seal 5, thereby playing a dustproof role.

In the description of the present utility model, it should be understood that the terms "right end", "left side", "right side", "inside", "circumferential", "axial", "left end", "end", "one side", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "connection" and "offset" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A gearbox test fixture, characterized in that it comprises a support frame (1) and a connector, wherein the connector is arranged on the support frame (1); the connector comprises a connecting shaft (2) and a connecting shaft housing (4), wherein the connecting shaft (2) is axially rotatably arranged on the support frame (1) through the connecting shaft housing (4), one end of the connecting shaft (2) is connected to a gearbox rotor (8), and the other end is connected to a test bench transmission shaft (9). 2. A gearbox test fixture according to claim 1, characterized in that the connecting shaft (2) is divided into two sections, one section is the rotor connecting shaft (21), and the other section is the transmission shaft connecting shaft (22); one end of the transmission shaft connecting shaft (22) is coaxially connected to the other end of the rotor connecting shaft (21), and is circumferentially fixedly connected, one end of the rotor connecting shaft (21) is connected to the gearbox rotor (8), and the other end of the transmission shaft connecting shaft (22) is connected to the test bench transmission shaft (9). 3. A gearbox test fixture according to claim 2, characterized in that the other end of the rotor connecting shaft (21) is circumferentially fixedly connected to one end of the transmission shaft connecting shaft (22) through a spline (25). 4. A gearbox test fixture according to claim 2, characterized in that the transmission shaft connecting shaft (22) is provided with a central through hole, the other end of the rotor connecting shaft (21) passes through the central through hole, and the other end portion passing through the central through hole is provided with a thread, which is tightened by a nut (26) to abut against the other end portion of the transmission shaft connecting shaft (22). 5. A gearbox test fixture according to claim 2, characterized in that a rotor connecting flange (24) is provided at one end of the rotor connecting shaft (21), and is connected to the gearbox rotor (8) through the rotor connecting flange (24) by bolts. 6. A gearbox test fixture according to claim 2, characterized in that a transmission shaft connecting shaft (22) is provided with a transmission shaft connecting flange (23) at the other end, and is connected to the test bench transmission shaft (9) through the transmission shaft connecting flange (23) by bolts. 7. A gearbox test fixture according to claim 1, characterized in that a through hole (11) is opened on the support frame (1), the connecting shaft (2) is circumferentially rotatably connected to the connecting shaft housing (4) through a bearing (3), the connecting shaft housing (4) is arranged at the position of the through hole (11) on the support frame (1), and the connecting shaft passes through the through hole (11). 8. A gearbox test fixture according to claim 7, characterized in that oil seals (5) and adjustment rings (6) are provided on both sides of the bearing (3). 9. A gearbox test fixture according to claim 8, characterized in that the adjustment ring (6) is threadedly connected to the connecting shaft housing (4). 10. A gearbox test fixture according to claim 8, characterized in that a dust cover (7) is provided on a side of the oil seal (5) away from the bearing (3).