Gearbox operation testing device

Abstract

The utility model relates to the technical field of machinery, in particular to a gearbox operation testing device, which comprises a bottom plate, a test board used for mounting a gearbox is fixed above the bottom plate, a rack is fixed on one side above the bottom plate, a motor is mounted on the side surface of the rack, and the motor drives an input shaft of the gearbox to operate through a transmission belt. A tensioning arm is installed below the machine frame, a tensioning wheel is installed at one end of the tensioning arm, and an output shaft of the gearbox is connected with a brake. Compared with the prior art, the brake is arranged to simulate the load during operation of the gearbox, the tensioning arm and the tensioning wheel are arranged to realize tensioning during transmission, slip is prevented, the load testing capability is improved, the tensioning arm and the motor are mounted on the same rack, the integration level is high, and the equipment space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a gear box operation testing device. Background Art

[0002] In order to test the operating performance of the gearbox, a gearbox operating test device is needed. The existing relatively close technology is a gearbox series product fast no-load test device disclosed in announcement number CN111665040B, which connects the output end of the motor and the input end of the product to be tested through a transmission belt for testing. Under no-load conditions, the belt can directly connect to drive the input shaft to rotate, but if it is necessary to adapt the gearbox to be tested under load conditions, the device needs to be improved. Summary of the invention

[0003] The utility model provides a gear box operation test device to overcome the deficiencies of the prior art.

[0004] In order to achieve the above purpose, a gearbox operation test device is designed, comprising a base plate, a test bench for mounting the gearbox is fixed above the base plate, a frame is fixed on one side above the base plate, a motor is installed on the side of the frame, the motor drives the input shaft of the gearbox to operate through a transmission belt, a tensioning arm is installed below the frame, a tensioning wheel is installed at one end of the tensioning arm, and the output shaft of the gearbox is connected to the brake.

[0005] One end of the tensioning arm is a disc structure, and an arc-shaped mounting hole is opened on the disc. A screw passes through the mounting hole to fix the tensioning arm on one side of the frame.

[0006] The transmission belt is a synchronous belt.

[0007] A protective cover is installed above the bottom plate, and an openable and closable protective cover is arranged above the protective cover.

[0008] The frame is provided with a proximity switch for detecting the protective cover.

[0009] The power supply of the motor is connected with a current sensor.

[0010] The brake is a pneumatic brake.

[0011] Compared with the prior art, the utility model provides a brake to simulate the load of the gear box during operation, and by providing a tensioning arm and a tensioning wheel, the transmission can be tensioned to prevent slipping and improve the load testing capacity. The tensioning arm and the motor are installed on the same frame, with high integration and saving equipment space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the utility model.

[0013] Figure 2 It is a schematic diagram of the utility model with a protective cover.

[0014] Figure 3 It is a structural explosion diagram of the utility model.

[0015] Figure 4 A schematic diagram of the rack structure.

[0016] Figure 5 Schematic diagram of the brake connection structure.

[0017] See also Figure 1-Figure 5 , where 1 is a base plate, 2 is a test bench, 3 is a frame, 4 is a motor, 5 is a transmission belt, 6 is a tensioning arm, 6-1 is a mounting hole, 7 is a tensioning wheel, 8 is a brake, 8-1 is a brake output shaft, 9 is a protective cover, 10 is a protective cover, 11 is a proximity switch, 12 is a gear box, 12-1 is a gear box output shaft, and 13 is a coupling. DETAILED DESCRIPTION

[0018] The utility model is further described below with reference to the accompanying drawings.

[0019] like Figure 1-Figure 5 As shown, a test bench 2 for installing a gear box 12 is fixed above the base plate 1, a frame 3 is fixed on one side above the base plate 1, a motor 4 is installed on the side of the frame 3, and the motor 4 drives the input shaft of the gear box 12 to operate through a transmission belt 5. A tensioning arm 6 is installed below the frame 3, and a tensioning wheel 7 is installed at one end of the tensioning arm 6. The gear box output shaft 12-1 is connected to the brake 8.

[0020] One end of the tension arm 6 is a disc structure, and a circular arc-shaped mounting hole 6-1 is opened on the disc. The screw passes through the mounting hole 6-1 to fix the tension arm 6 to one side of the frame 3. When the tension arm 6 is rotated and adjusted, the circular arc-shaped mounting hole 6-1 can always expose the threaded hole on the frame 3, which is convenient for installation with screws.

[0021] The transmission belt 5 is a synchronous belt. Synchronous pulleys are installed on the output shaft of the motor 4 and the input shaft of the gear box 12, and accurate rotation can be achieved through the synchronous belt.

[0022] A protective cover 9 is installed above the bottom plate 1, and an openable and closable protective cover 10 is provided above the protective cover 9. The protective cover 9 and the protective cover 10 can protect the moving parts from being exposed to the outside and prevent injuries to personnel.

[0023] The frame 3 is provided with a proximity switch 11 for detecting the protective cover 10. It can be ensured that the motor 4 can be started only after the protective cover 10 is put in place to prevent injuries to personnel.

[0024] The power supply of the motor 4 is connected with a current sensor. Whether the gear box 12 runs smoothly can be judged by the displayed current value.

[0025] The brake 8 is a pneumatic brake, and the gearbox output shaft 12-1 is connected to the brake output shaft 8-1 through a coupling 13. The pneumatic brake can simulate loading, has a compact structure, and is highly versatile. The output load of the pneumatic brake can be controlled by adjusting the air pressure, which is convenient for simulating various working conditions. The brake output shaft 8-1 is connected to the gearbox output shaft 12-1 through a coupling 13 to transfer load torque. Figure 5 As shown, if the gearbox 12 is a turbine gearbox, the brake 8 can be installed on the base plate 1 below the test bench 2, with the input shaft of the gearbox 12 facing sideways and the gearbox output shaft 12-1 facing downward and connected to the brake 8. The brake 8 can be installed to the required position according to the type of the gearbox 12.

[0026] When the utility model is used, the gearbox 12 is fixed to the test bench 2, and then the synchronous belt is installed, and the output shaft of the motor 4 is connected to the input shaft of the gearbox 12 through the synchronous wheel and the synchronous belt. Then the position of the tensioning arm 6 is adjusted so that the tensioning wheel 7 applies tension to the synchronous belt. The arc-shaped mounting hole 6-1 is convenient for rotating the tensioning arm 6 and can be locked at any position within the range of the mounting hole 6-1 after it is adjusted into place. The gearbox output shaft 12-1 is connected to the brake output shaft 8-1 of the pneumatic brake through the coupling 13. After the pneumatic brake is ventilated, a braking force is generated and transmitted to the gearbox 12, simulating the passive load of the gearbox 12 when it is actually working. After completing the preparation work, the protective cover 10 is closed. After the proximity switch 11 detects that the protective cover 10 is closed, the equipment can be turned on to start testing.

Claims

1. A gearbox operation test device, comprising a base plate, characterized in that: A test bench (2) for mounting a gear box (12) is fixed above the base plate (1), a frame (3) is fixed on one side above the base plate (1), a motor (4) is mounted on the side of the frame (3), the motor (4) drives the input shaft of the gear box (12) to operate via a transmission belt (5), a tensioning arm (6) is mounted below the frame (3), a tensioning wheel (7) is mounted at one end of the tensioning arm (6), and the gear box output shaft (12-1) is connected to a brake (8).

2. A gearbox operation test device according to claim 1, characterized in that: One end of the tensioning arm (6) is a disc structure, and a circular arc-shaped mounting hole (6-1) is formed on the disc. A screw passes through the mounting hole (6-1) to fix the tensioning arm (6) to one side of the frame (3).

3. A gearbox operation test device according to claim 1, characterized in that: The transmission belt (5) is a synchronous belt.

4. A gearbox operation test device according to claim 1, characterized in that: A protective cover (9) is installed above the bottom plate (1), and an openable and closable protective cover (10) is provided above the protective cover (9).

5. A gearbox operation test device according to claim 4, characterized in that: The frame (3) is provided with a proximity switch (11) for detecting the protective cover (10).

6. A gearbox operation test device according to claim 4, characterized in that: The power supply of the motor (4) is connected to a current sensor.

7. A gearbox operation test device according to claim 1, characterized in that: The brake (8) is a pneumatic brake, and the gearbox output shaft (12-1) is connected to the brake output shaft (8-1) via a coupling (13).

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