Gearbox torque test bench

Abstract

The utility model belongs to gear drive and speed reducer technical field, specifically disclose a gear box torque test bench, including device frame, the outer surface of device frame is connected with support frame through fastening mechanism sliding, support frame is provided with a plurality of evenly distributed sleeve, the sleeve is movably inserted with drive shaft, the top fixed mounting of device frame has fixed cylinder, the bottom rotatable connection of fixed cylinder has internal thread, the outer surface fixed connection of internal thread has connecting plate. The gear box torque test bench, through double rotation coordination mechanism can make the friction head in the rotation simultaneously revolve, thereby let the friction head to all drive shafts contact friction, namely can carry out temperature rise test to multiple drive shafts simultaneously, has guaranteed to each drive shaft's friction condition is consistent, this kind of design avoided the test error of traditional test because of the friction condition is not uniform, improved the precision of temperature rise test.

Description

Technical Field

[0001] This application relates to the field of experimental technology for gear transmission and reducers, specifically a gearbox torque test bench. Background Technology

[0002] As a crucial component of a speed reducer, the performance and reliability of the reduction gearbox directly determine the reliability of the entire system. A gearbox torque test bench can measure various performance parameters of the gearbox, including input torque, speed, power, output torque, speed, power, efficiency, temperature rise, vibration, and noise. These parameters are important indicators for evaluating gearbox performance and are essential for ensuring the quality and reliability of the gearbox.

[0003] The drive shaft is the core component in the gearbox that transmits power and torque. It connects the input end (such as the motor) to the gear set inside the gearbox, converting external power into the speed and torque output required by the gearbox. Currently, in the process of evaluating the impact of heat generated by friction on the overall performance of the shaft and gearbox (i.e., temperature rise test), usually only one drive shaft can be tested at a time. This testing method is inefficient, makes it difficult to test drive shafts in the same batch simultaneously, and easily affects the accuracy of the test. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and to propose a gearbox torque test bench to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a gearbox torque test bench, including a device frame. A support frame is slidably connected to the outer surface of the device frame via a fastening mechanism. Several uniformly distributed sleeves are provided on the support frame. A drive shaft is movably inserted into each sleeve. A fixed cylinder is fixedly installed on the top of the device frame. An inner threaded sleeve is rotatably connected to the bottom of the fixed cylinder. A connecting plate is fixedly connected to the outer surface of the inner threaded sleeve. A rotating shaft is rotatably connected to the inner surface of the connecting plate. A friction head is provided at the bottom of the rotating shaft. A double-rotation cooperative mechanism for driving the friction head is provided on the device frame.

[0006] Preferably, the fastening mechanism includes a screw that is movably inserted inside the support frame, and a nut is threaded onto the outer surface of the screw. The fastening mechanism can adjust and stabilize the position of the support frame on the device frame.

[0007] Preferably, the dual-rotation cooperative mechanism includes a motor fixedly installed on the top of the device frame, a drive wheel fixedly connected to the output end of the motor, and a conveyor belt slidably connected to the outer surface of the drive wheel. The dual-rotation cooperative mechanism enables the friction head to rotate on its own axis while revolving around the central axis, thereby allowing the friction head to rub against different drive shafts.

[0008] Preferably, a first rotating shaft is rotatably connected inside the fixed cylinder, a transmission wheel is fixedly connected to the top of the first rotating shaft, and the outer surface of the transmission wheel is slidably connected to the inner side of the conveyor belt away from the drive wheel.

[0009] Preferably, a first gear is fixedly sleeved on the outer surface of the first rotating shaft, a second rotating shaft is rotatably connected inside the fixed cylinder, and the bottom end of the second rotating shaft is rotatably connected to the inner surface of the connecting plate. A second gear is fixedly sleeved on the outer surface of the second rotating shaft, and the outer surface of the second gear meshes with the outer surface of the first gear.

[0010] Preferably, a drive gear is fixedly sleeved at the bottom end of the second rotating shaft, and a transmission gear is fixedly sleeved at the top end of the rotating shaft. The outer surface of the transmission gear meshes with the outer surface of the drive gear and the inner surface of the inner threaded sleeve, respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This gearbox torque test bench, through a dual-rotation cooperative mechanism, allows the friction head to rotate on its own axis while simultaneously revolving around the revolution, thus enabling the friction head to make contact friction with all drive shafts. This allows for simultaneous temperature rise testing of multiple drive shafts, ensuring consistent friction conditions for each drive shaft. This design avoids testing errors caused by uneven friction conditions in traditional testing and improves the accuracy of temperature rise testing.

[0013] 2. This gearbox torque test bench can quickly adjust the drive shaft to the appropriate position by moving the support frame and tightening the nut, reducing the preparation time before the test. By inserting multiple drive shafts into the sleeve and fixing them on the support frame, the device can complete the test of the same batch of drive shafts at one time, which greatly shortens the test cycle and avoids the inefficiency of traditional single-axis testing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the surface structure of the support frame in this application;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed cylinder and the inner threaded sleeve in this application;

[0017] Figure 4 This is a schematic diagram of the surface structure of the internal threaded sleeve in this application.

[0018] The components are: 1. Device frame; 2. Support frame; 3. Screw; 4. Nut; 5. Sleeve; 6. Drive shaft; 7. Fixed cylinder; 8. Internal threaded sleeve; 9. Connecting plate; 10. Rotating shaft; 11. Friction head; 12. Motor; 13. Drive wheel; 14. Conveyor belt; 15. Transmission wheel; 16. First rotating shaft; 17. First gear; 18. Second rotating shaft; 19. Second gear; 20. Drive gear; 21. Transmission gear. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Please see Figure 1-4 A gearbox torque test bench includes a frame 1. A support frame 2 is slidably connected to the outer surface of the frame 1 via a fastening mechanism. Several uniformly distributed sleeves 5 are provided on the support frame 2. A circular groove is opened on the top of the support frame 2, and the sleeves 5 are uniformly distributed in this circular groove. This design is to cooperate with the friction head 11 so that it can contact each drive shaft 6 during the circular motion (each drive shaft 6 is equidistant from the center position of the circular groove). The drive shaft 6 is movably inserted into the sleeve 5. A fixed cylinder 7 is fixedly installed on the top of the frame 1. An inner threaded sleeve 8 is rotatably connected to the bottom of the fixed cylinder 7. A connecting plate 9 is fixedly connected to the outer surface of the inner threaded sleeve 8. A rotating shaft 10 is rotatably connected to the inner surface of the connecting plate 9. The friction head 11 is provided at the bottom of the rotating shaft 10. A double-rotation cooperative mechanism for driving the friction head 11 is provided on the frame 1.

[0021] Through the above technical solution, during the temperature rise test of the gearbox drive shaft 6, the device can insert multiple drive shafts 6 into the sleeve 5 (the two are tightly fitted), then move the support frame 2 to raise the drive shaft 6 to a suitable position, and stabilize the support frame 2 by the fastening mechanism. Finally, under the action of the double rotation coordination mechanism, the friction head 11 rotates on its own axis and revolves around the center, thereby making frictional contact with each drive shaft 6 one by one. With the help of temperature measuring tools, the temperature rise test of multiple drive shafts 6 can be easily achieved simultaneously.

[0022] Specifically, the fastening mechanism includes a screw 3 that is movably inserted inside the support frame 2, and a nut 4 is threaded onto the outer surface of the screw 3.

[0023] Through the above technical solution, the support frame 2 has an open design at the connection between the screw 3 and the nut 4. This is to allow the screw 3 to pass through the support frame 2, and then tighten the nut 4 to achieve the effect of fastening the support frame 2 and making it stably attached to the device frame 1.

[0024] Specifically, the dual-rotation cooperative mechanism includes a motor 12 fixedly installed on the top of the device frame 1, a drive wheel 13 fixedly connected to the output end of the motor 12, and a conveyor belt 14 slidably connected to the outer surface of the drive wheel 13.

[0025] Through the above technical solution, the transmission system composed of drive wheel 13, conveyor belt 14 and transmission wheel 15 has a transmission wrap angle greater than 120 degrees. This is so that during the rotation of drive wheel 13, the transmission wheel 15 can be smoothly driven to rotate synchronously through the transmission action of conveyor belt 14.

[0026] Specifically, a first rotating shaft 16 is rotatably connected inside the fixed cylinder 7, and a transmission wheel 15 is fixedly connected to the top of the first rotating shaft 16. The outer surface of the transmission wheel 15 is slidably connected to the inner side of the conveyor belt 14 away from the drive wheel 13.

[0027] Through the above technical solution, the transmission wheel 15 will drive the first rotating shaft 16 and the first gear 17 to rotate synchronously during the rotation process, and the first gear 17 will drive the second gear 19 that meshes with it.

[0028] Specifically, a first gear 17 is fixedly sleeved on the outer surface of the first rotating shaft 16, a second rotating shaft 18 is rotatably connected inside the fixed cylinder 7, and the bottom end of the second rotating shaft 18 is rotatably connected to the inner surface of the connecting plate 9. A second gear 19 is fixedly sleeved on the outer surface of the second rotating shaft 18, and the outer surface of the second gear 19 meshes with the outer surface of the first gear 17.

[0029] Through the above technical solution, the second gear 19 will rotate after being driven by the first gear 17, thereby driving the second rotating shaft 18 and the drive gear 20 at the bottom to rotate synchronously.

[0030] Specifically, the bottom end of the second rotating shaft 18 is fixedly fitted with a drive gear 20, and the top end of the rotating shaft 10 is fixedly fitted with a transmission gear 21. The outer surface of the transmission gear 21 is meshed with the outer surface of the drive gear 20 and the inner surface of the inner threaded sleeve 8, respectively.

[0031] With the above technical solution, the drive gear 20 is located at the center of the inner thread sleeve 8. When the drive gear 20 rotates, it can drive the transmission gear 21 to rotate. During this period, the transmission gear 21 will drive the inner thread sleeve 8, so that the inner thread sleeve 8 will drive the connecting plate 9 to make synchronous circular motion during its rotation (with the drive gear 20 and the second rotating shaft 18 as the center, and the connecting plate 9 and the second rotating shaft 18 are rotating relative to each other). During this process, the rotating shaft 10 will make synchronous circular motion with the connecting plate 9.

[0032] Working Principle: During the temperature rise test of the drive shaft 6 of the gearbox, multiple drive shafts 6 can be inserted into the sleeve 5 (the two fit tightly together). Then, the support frame 2 is moved to raise the drive shaft 6 to a suitable position. Next, the screw 3 passes through the opening of the support frame 2, and the nut 4 is tightened to move it along the axial direction of the screw 3 until the support frame 2 is tightly fitted onto the device frame 1. The drive shaft 6 in the sleeve 5 can then be moved to a suitable position as needed. After that, the motor 12 is turned on to drive the drive wheel 13 to rotate. Under the transmission action of the conveyor belt 14, the linkage drive wheel 15 rotates synchronously. During this process, the first rotating shaft 16 and the first gear 17 rotate accordingly. The first gear 17 drives the second gear 19, which meshes with it, to rotate. The second gear 19 drives the second rotating shaft 18 and the drive gear 20 at the bottom to rotate. During the rotation of the drive gear 20, it will also rotate the second rotating shaft 18 and the drive gear 20 at the bottom. The meshing transmission gear 21 drives the transmission gear 21 and the rotating shaft 10 to rotate. The friction head 11 at the bottom of the rotating shaft 10 also rotates. At the same time, the transmission gear 21 drives another meshing inner thread sleeve 8, causing the inner thread sleeve 8 to rotate. During the rotation of the inner thread sleeve 8, the connecting plate 9 on its surface moves synchronously with the inner thread sleeve 8 around the second rotating shaft 18 (i.e., it moves in a circle around the second rotating shaft 18 and the drive gear 20). The rotating shaft 10 and the friction head 11 on the connecting plate 9 move in a synchronous circle. The effect is that the friction head 11 revolves while rotating, thus rubbing all the drive shafts 6 on the support frame 2 one by one. After being rubbed, the drive shafts 6 gradually heat up. During this process, the temperature rise can be easily tested by a temperature measuring tool, thus achieving the purpose of synchronous temperature rise testing of the same batch of drive shafts 6.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gearbox torque test bench, comprising a frame (1), characterized in that: The outer surface of the device frame (1) is slidably connected to a support frame (2) via a fastening mechanism. Several uniformly distributed sleeves (5) are provided on the support frame (2). A drive shaft (6) is movably inserted into the sleeve (5). A fixed cylinder (7) is fixedly installed on the top of the device frame (1). An inner threaded sleeve (8) is rotatably connected to the bottom of the fixed cylinder (7). A connecting plate (9) is fixedly connected to the outer surface of the inner threaded sleeve (8). A rotating shaft (10) is rotatably connected to the inner surface of the connecting plate (9). A friction head (11) is provided at the bottom of the rotating shaft (10). A double-rotation cooperative mechanism for driving the friction head (11) is provided on the device frame (1).

2. The gearbox torque test bench according to claim 1, characterized in that: The fastening mechanism includes a screw (3) that is movably inserted inside the support frame (2), and a nut (4) is threaded onto the outer surface of the screw (3).

3. The gearbox torque test bench according to claim 1, characterized in that: The dual-rotation cooperative mechanism includes a motor (12) fixedly installed on the top of the device frame (1), and a drive wheel (13) is fixedly connected to the output end of the motor (12). A conveyor belt (14) is slidably connected to the outer surface of the drive wheel (13).

4. The gearbox torque test bench according to claim 3, characterized in that: The fixed cylinder (7) is rotatably connected to a first rotating shaft (16), and a transmission wheel (15) is fixedly connected to the top of the first rotating shaft (16). The outer surface of the transmission wheel (15) is slidably connected to the inner side of the conveyor belt (14) away from the drive wheel (13).

5. A gearbox torque testing bench according to claim 4, characterized in that: The outer surface of the first rotating shaft (16) is fixedly fitted with a first gear (17), and the inside of the fixed cylinder (7) is rotatably connected to a second rotating shaft (18). The bottom end of the second rotating shaft (18) is rotatably connected to the inner surface of the connecting plate (9). The outer surface of the second rotating shaft (18) is fixedly fitted with a second gear (19), and the outer surface of the second gear (19) meshes with the outer surface of the first gear (17).

6. A gearbox torque testing bench according to claim 5, characterized in that: The bottom end of the second rotating shaft (18) is fixedly fitted with a drive gear (20), and the top end of the rotating shaft (10) is fixedly fitted with a transmission gear (21). The outer surface of the transmission gear (21) is meshed with the outer surface of the drive gear (20) and the inner surface of the inner thread sleeve (8).

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