A hydrodynamic transmission testing device

Abstract

The utility model provides a kind of hydraulic transmission testing device, including test bench, support, oil baffle and motor, support is fixedly connected to the side of test bench, motor is fixedly connected with support, the output shaft of motor is also connected by key, oil baffle is also fixedly connected with driven rack, driving gear and driven rack are mutually engaged, and the length direction of driven rack is arranged along vertical direction.The utility model discloses the technical scheme, under the action of motor driving force, make oil baffle rise and around the four around test bench, can prevent oil splash to the ground around hydraulic transmission testing system, avoid to cause ground oil pollution, and reduce the security risk of surrounding pedestrian or driving, and the oil liquid that splashes outward is collected via oil collecting groove, reduce resource waste, test bench can also move along the ball screw axial direction, so that hydraulic transmission and driver, loader are conveniently and effectively connected, improve test work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic transmission testing technology, and in particular, a hydraulic transmission testing device. Background Technology

[0002] A hydraulic transmission is a device that converts the internal energy of hydraulic fluid into high-torque mechanical energy, which is then used to control the speed of various vehicles. It is an integrated product combining mechanical, electrical, hydraulic, and automatic control functions, characterized by high power, high torque, and heavy load capacity. It is a core assembly component of various heavy-duty and super-heavy-duty special vehicles and engineering equipment, widely used in urban buses, luxury highway tour buses, petroleum engineering, airport shuttle buses, special transport vehicles, and military vehicles. The research and development and manufacturing process of hydraulic transmissions requires testing. A hydraulic transmission testing system is used to test various parameters of the transmission, such as no-load and loaded running-in conditions. This saves time compared to performance testing after installation on the vehicle, and allows for early detection of defects in the design, manufacturing, or assembly processes, providing crucial support for development and improving product performance and yield rates.

[0003] For example, patent document CN219714611U discloses a torque calibration device for a high-power hydraulic transmission test system, including a standard torque sensor, a connecting mechanism, a force source device, and a detection element. The standard torque sensor includes a main body, a first connecting member, and a second connecting member. The main body is positioned between the first and second connecting members, and the first connecting member is used to connect to a predetermined structure under test. The connecting mechanism includes a connecting rod and a flange. One end of the connecting rod is connected to the flange, and the flange is used to connect to the second connecting member. The force source device applies force to the connecting rod to rotate the flange. The detection element is electrically connected to the standard torque sensor and is used to detect the torque value of the standard torque sensor. This patented technology solves the problems of low measurement accuracy and large space requirements during torque calibration of a high-power hydraulic transmission test system.

[0004] However, during the testing of hydraulic transmissions, whether under no-load or loaded conditions, the transmission must be connected to the hydraulic control system. As the hydraulic fluid circulates within the system, it inevitably splashes onto the area around the test system, causing oil pollution and making the ground slippery, posing a significant safety risk to pedestrians and vehicles. The splashed fluid also represents a substantial waste of resources. Furthermore, during loaded testing, the heavy and bulky drive unit and loader make it difficult to move, hindering effective and reliable mechanical connection between them and the transmission. This increases auxiliary processing time and reduces testing efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a hydraulic transmission testing device.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a hydraulic transmission testing device, including a test bench, a support, an oil baffle, and a motor. The support is fixedly connected to the side of the test bench, the motor is fixedly connected to the support, the output shaft of the motor is also connected to the driving gear via a key, the oil baffle is also fixedly connected to the driven rack, the driving gear and the driven rack mesh with each other, and the length direction of the driven rack is arranged along the vertical direction.

[0008] The test bench is rectangular in shape. The ratio of the number of oil baffles to the number of motors is 1:2. The oil baffles are located on the four sides of the test bench, and the motors are located on the left and right sides of the oil baffles.

[0009] The number of motors is 8.

[0010] The oil baffle and the driven rack are manufactured as a single piece.

[0011] The test bench is also fixedly connected to the oil collection tray, the surface of which is provided with an oil collection groove, which is also connected to one end of the oil discharge pipe, and the other end of the oil discharge pipe extends outward.

[0012] The oil collection tray is fixed to the four sides of the test bench, and the oil collection groove is a closed loop shape.

[0013] The oil collection tray is also fixedly connected to the filter screen, and the filter screen covers the opening of the oil collection trough.

[0014] The hydraulic transmission testing device also includes a ball screw, which is connected to the base plate via rolling bearings, and the test bench is also screwed to the ball screw.

[0015] The surface of the base plate is also provided with a guide groove, and the ball screw is accommodated in the guide groove.

[0016] The base plate is also fixedly connected to the driver and the loader respectively. The test bench is set between the driver and the loader, and the line connecting the driver and the loader is parallel to the axial direction of the ball screw.

[0017] The beneficial effects of this utility model are as follows: Using the technical solution of this utility model, during the testing of the hydraulic transmission, the hydraulic transmission is first clamped onto the surface of the test bench, then connected to the corresponding hydraulic control system. Then, under the driving force of the motor, the oil baffle is raised and surrounds the test bench. During the circulation of the oil in the hydraulic control system, it can minimize the possibility of oil splashing onto the ground around the hydraulic transmission testing system, avoiding oil pollution and reducing the safety risks to pedestrians or vehicles. Furthermore, the splashed oil is collected through an oil collection tank, creating conditions for the reuse of the splashed oil and reducing resource waste. In addition, the hydraulic transmission and the test bench can reciprocate along the axis of the ball screw, thereby shortening the distance between the hydraulic transmission and the driver / loader, facilitating the operator's connection of the hydraulic transmission to the driver / loader, shortening the auxiliary process time during testing, and improving testing efficiency. Attached Figure Description

[0018] Figure 1 This is an isometric drawing of this utility model; Figure 2 This is a utility model Figure 1 A magnified view of a section at point I; Figure 3 This is a schematic diagram showing the connection of the support, oil baffle, driving gear, and driven rack of this utility model; Figure 4 This is an exploded view of the oil collecting plate, filter screen, and oil drain pipe of this utility model.

[0019] In the diagram: 1-Test bench, 2-Support, 3-Oil baffle, 4-Motor, 5-Drive gear, 6-Driven rack, 7-Oil collection plate, 8-Oil collection trough, 9-Oil drain pipe, 10-Filter screen, 11-Ball screw, 12-Driver, 13-Loader, 14-Base plate. Detailed Implementation

[0020] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0021] like Figures 1 to 4As shown, this utility model provides a hydraulic transmission testing device, including a test bench 1, a support 2, an oil baffle 3, and a motor 4. The support 2 is fixedly connected to the side of the test bench 1, the motor 4 is fixedly connected to the support 2, the output shaft of the motor 4 is also connected to the driving gear 5 through a flat key, the oil baffle 3 is also fixedly connected to the driven rack 6, the driving gear 5 and the driven rack 6 mesh with each other, and the length direction of the driven rack 6 is arranged along the vertical direction.

[0022] By employing the technical solution of this utility model, during the testing of a hydraulic transmission, the hydraulic transmission is first clamped onto the surface of the test bench, then connected to the corresponding hydraulic control system. Under the driving force of the motor, the oil baffle rises and surrounds the test bench. During the circulation of the oil within the hydraulic control system, splashing of oil onto the ground around the hydraulic transmission testing system is minimized, preventing oil pollution and reducing safety risks to pedestrians and vehicles. Furthermore, splashed oil is collected in an oil collection tank, enabling reuse and reducing resource waste. Additionally, the hydraulic transmission and test bench can reciprocate along the ball screw axis, shortening the distance between the hydraulic transmission and the driver / loader, facilitating connection between the hydraulic transmission and the driver / loader, reducing auxiliary process time during testing, and improving testing efficiency.

[0023] Specifically, the test bench 1 is rectangular in shape, the ratio of the number of oil baffles 3 to the number of motors 4 is 1:2, and the oil baffles 3 are located on the four sides of the test bench 1, while the motors 4 are located on the left and right sides of the oil baffles 3. Preferably, there are 8 motors 4, which are installed at the top corners of the top surface of the test bench 1.

[0024] Furthermore, the oil baffle 3 and the driven rack 6 are integrally manufactured. The test bench 1 is also fixedly connected to the oil collection tray 7, the surface of which is provided with an oil collection groove 8. The oil collection groove 8 is also connected to one end of the oil drain pipe 9, and the other end of the oil drain pipe 9 extends outward. The oil collection tray 7 is fixedly connected to the four sides of the test bench 1, and the oil collection groove 8 is a closed loop shape. The oil collection tray 7 is also fixedly connected to the filter screen 10, and the filter screen 10 covers the opening of the oil collection groove 8. By adopting the technical solution of this utility model, the splashed oil is collected through the oil collection groove and filtered out by the filter screen 10 to remove excess impurities, creating conditions for the reuse of splashed oil and reducing resource waste.

[0025] In addition, the hydraulic transmission testing device also includes a ball screw 11, which is connected to the base plate 14 via rolling bearings. The test bench 1 is also screwed to the ball screw 11. The surface of the base plate 14 is also provided with a guide groove, in which the ball screw 11 is accommodated. Specifically, the base plate 14 is also fixedly connected to the driver 12 and the loader 13 respectively. The test bench 1 is positioned between the driver 12 and the loader 13, and the line connecting the driver 12 and the loader 13 is parallel to the axial direction of the ball screw 11. Using the technical solution of this invention, the hydraulic transmission and the test bench can reciprocate along the axial direction of the ball screw, thereby shortening the distance between the hydraulic transmission and the driver and loader. This facilitates the operator in connecting the hydraulic transmission to the driver and loader, reducing auxiliary process time during testing and improving testing efficiency.

Claims

1. A hydraulic transmission testing device, characterized in that: The test bench (1), support (2), oil baffle (3) and motor (4) are included. The support (2) is fixed to the side of the test bench (1). The motor (4) is fixed to the support (2). The output shaft of the motor (4) is also connected to the driving gear (5) by a key. The oil baffle (3) is also fixed to the driven rack (6). The driving gear (5) and the driven rack (6) mesh with each other. The length direction of the driven rack (6) is arranged along the vertical direction.

2. The hydraulic transmission testing device as described in claim 1, characterized in that: The test bench (1) is rectangular in shape. The ratio of the number of oil baffles (3) to the number of motors (4) is 1:

2. The oil baffles (3) are located on the four sides of the test bench (1), and the motors (4) are located on the left and right sides of the oil baffles (3).

3. The hydraulic transmission testing device as described in claim 2, characterized in that: The number of motors (4) is 8.

4. The hydraulic transmission testing device as described in claim 1, characterized in that: The oil baffle (3) and the driven rack (6) are integrally manufactured.

5. The hydraulic transmission testing device as described in claim 1, characterized in that: The test bench (1) is also fixedly connected to the oil collection plate (7). The surface of the oil collection plate (7) is provided with an oil collection groove (8). The oil collection groove (8) is also connected to one end of the oil drain pipe (9). The other end of the oil drain pipe (9) extends outward.

6. The hydraulic transmission testing apparatus as described in claim 5, characterized in that: The oil collection plate (7) is fixed to the four sides of the test bench (1), and the oil collection trough (8) is a closed loop shape.

7. The hydraulic transmission testing apparatus as described in claim 6, characterized in that: The oil collection tray (7) is also fixedly connected to the filter screen (10), and the filter screen (10) covers the opening of the oil collection trough (8).

8. The hydraulic transmission testing device as described in claim 1, characterized in that: The hydraulic transmission test device also includes a ball screw (11), which is connected to the base plate (14) via a rolling bearing. The test bench (1) is also screwed to the ball screw (11).

9. The hydraulic transmission testing apparatus as described in claim 8, characterized in that: The surface of the base plate (14) is also provided with a guide groove, and the ball screw (11) is accommodated in the guide groove.

10. The hydraulic transmission testing apparatus as described in claim 8, characterized in that: The base plate (14) is also fixedly connected to the driver (12) and the loader (13) respectively. The test bench (1) is set between the driver (12) and the loader (13), and the line connecting the driver (12) and the loader (13) is parallel to the axial direction of the ball screw (11).

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