Bulldozer transmission system test device and use method thereof

Abstract

The invention discloses a bulldozer transmission system test device and a use method thereof. A drive axle test bed is adopted, the input end of the test bed is connected with a flywheel in a transfer case, the flywheel is in meshed connection with a torque converter, the torque converter is connected with a universal joint, and the universal joint is sequentially connected with a gearbox, a central transmission, a steering clutch and a final transmission; the final drive is connected with the output end through the connecting discs on the two sides. According to the invention, the reliability and the service life of each component such as related components of transmission systems such as a transfer case, a torque converter, a steering brake system, a central transmission system and a final transmission system during working of the whole machine can be verified, and the working state and the reliability of the whole machine under different gears can be verified.

Description

Technical Field

[0001] This invention relates to the field of bulldozers, and more particularly to a bulldozer transmission system testing device and its usage method. Background Technology

[0002] Bulldozers are equipment used for bulldozing and leveling soil. They are widely used in various engineering construction fields. They are considered early-stage construction equipment, and the basic working environment is relatively harsh. For the development of new products, if the whole machine testing and verification takes a long time, it cannot meet the demand for the rapid introduction of new products to the market.

[0003] The reliability of components in the transmission system of existing bulldozers, such as the transfer case, torque converter, steering and braking system, central drive, and final drive, can be verified by test benches. However, the results of individual reliability tests on each component cannot verify the reliability of the entire transmission system.

[0004] Therefore, it is necessary to develop a new type of bulldozer transmission system test device to verify the reliability of the whole machine's power transmission system. Summary of the Invention

[0005] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a bulldozer transmission system test device and its usage method, which can verify the reliability and service life of various components such as transfer case, torque converter, steering and braking system, central drive, final drive and other related components of the transmission system when the whole machine is working, and can also verify the working status and reliability of the whole machine in different gears.

[0006] Technical solution: The present invention provides a test device for a bulldozer transmission system, characterized in that: a drive axle test bench is used, the input end of the test bench is connected to the flywheel in the transfer case, the flywheel is meshed with the torque converter, the torque converter is connected to the universal joint, and the universal joint is sequentially connected to the gearbox, central drive, steering clutch, and final drive; the final drive is connected to the output end through connecting discs on both sides.

[0007] The test bench is arranged in a cross shape.

[0008] The test bench includes a main frame, with the input end, transfer case, flywheel, torque converter, universal joint, gearbox, and central drive located on the main frame.

[0009] The main frame is equipped with a rear axle box support and front left and right beam support.

[0010] The front left and right beam support seats are connected to the main frame through left and right beam fixing seats.

[0011] The main frame is equipped with a heat sink on its side.

[0012] The main frame is equipped with a hydraulic system and an electrical system.

[0013] The central drive system is connected to the steering and braking system.

[0014] When the input end is loaded, it drives the flywheel in the transfer case to rotate. The flywheel drives the torque converter meshing with it to rotate, which in turn drives the universal joint to rotate. The universal joint is connected to the gearbox, and the gearbox transmits the power to the central drive. The central drive transmits the power to the steering clutch, and the steering clutch transmits the power to the final drive. The final drive transmits the power to the output end through the connecting discs on both sides.

[0015] During the test, the load was applied in both working and driving modes to simulate the working state of the entire machine.

[0016] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: This invention mounts the entire transmission system and its related components on a test bench for reliability testing, thereby simulating the working condition of the transmission system on the entire machine. This verifies the reliability and service life of individual components such as the transfer case, torque converter, steering and braking system, central drive, and final drive during the operation of the entire machine, as well as the working state and reliability of the entire machine under different gears. This invention can simulate the working condition of the entire machine under different loading conditions, assembling components such as the transfer case, flywheel, radiator, and torque converter together for testing and verification, thereby verifying the reliability of the entire transmission system and its related components and the working state of the entire machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] In the diagram, 1 is the main frame; 2 is the rear axle housing support; 3 is the front left and right beam support; 4 is the left and right beam fixing seat; 5 is the input end; 6 is the transfer case; 7 is the flywheel; 8 is the radiator; 9 is the torque converter; 10 is the universal joint; 11 is the gearbox; 12 is the steering and braking system; 13 is the central drive; 14 is the final drive; 15 is the output end; and 16 is the hydraulic and electrical systems. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The bulldozer transmission system test device of the present invention adopts a drive axle test bench. The input end 5 on the test bench is connected to the flywheel 7 in the transfer case 6. The flywheel 7 is engaged with the torque converter 9. The torque converter 9 is connected to the universal joint 10. The universal joint 10 is sequentially connected to the gearbox 11, the central drive 13, the steering clutch, and the final drive 14. The final drive 14 is connected to the output end 15 via connecting plates on both sides. The test bench adopts a cross-shaped structure. The test bench includes a main frame 1, on which the input end 5, transfer case 6, flywheel 7, torque converter 9, universal joint 10, gearbox 11, and central drive 13 are located. The main frame 1 is provided with a rear axle housing support 2 and front left and right beam support 3. The front left and right beam support 3 are connected to the main frame 1 through left and right beam fixing seats 4. A radiator 8 is provided on the side of the main frame 1. A hydraulic system and an electrical system 16 are provided on the main frame 1. The central drive 13 is connected to the steering and braking system 12.

[0021] When the input end 5 of this invention is loaded, it drives the flywheel 7 in the transfer case 6 to rotate. The flywheel 7 drives the torque converter 9, which meshes with it, to rotate, thereby driving the universal joint 10 to rotate. The universal joint 10 is connected to the gearbox 11. The gearbox 11 transmits power to the central drive 13, the central drive 13 transmits power to the steering clutch, the steering clutch transmits power to the final drive 14, and the final drive 14 transmits power to the output end 15 through the connecting discs on both sides. During the test, the load is applied according to the working gear (low gear) and driving gear (high gear) to simulate the working state of the whole machine. Working in this state for 350 hours is equivalent to the normal working time of the whole machine for 8000 hours, in order to verify the reliability and service life of each component when the whole machine is working.

[0022] This invention mounts the entire transmission system and its related components on a test bench for reliability testing. This simulates the working condition of the transmission system within the entire machine, verifying the reliability and service life of individual components such as the transfer case, torque converter, steering and braking system, central drive, and final drive during machine operation. It also verifies the working state and reliability of the entire machine under different gears. This invention simulates the working condition of the entire machine under different loading conditions by assembling components such as the transfer case, flywheel, radiator, and torque converter for testing, thereby verifying the reliability of the entire transmission system and its related components, and the overall working state of the machine.

Claims

1. A bulldozer drive system test apparatus characterized by: The input end (5) of the test bed is connected with the flywheel (7) in the transfer case (6), the flywheel (7) is connected with the torque converter (9), the torque converter (9) is connected with the universal joint (10), the universal joint (10) is connected with the gearbox (11), the central transmission (13), the steering clutch and the final transmission (14) in sequence; the final transmission (14) is connected with the output end (15) through the connecting discs on both sides.

2. The bulldozer drive system test device of claim 1, wherein: The test bed adopts a "cross" type structure arrangement.

3. The bulldozer drive system test device of claim 1, wherein: The test bed comprises a main frame (1), an input end (5), a transfer case (6), a flywheel (7), a torque converter (9), a universal joint (10), a gearbox (11) and a central transmission (13) which are located on the main frame (1).

4. The bulldozer drive system test device of claim 3, wherein: The main frame (1) is provided with a rear axle box support seat (2) and a front end left and right beam support seat (3).

5. The bulldozer drive system test device of claim 4, wherein: The front end left and right beam support seat (3) is connected with the main frame (1) through the left and right beam fixing seat (4).

6. The bulldozer drive system test device of claim 3, wherein: The main frame (1) is provided with a radiator (8) on the side.

7. The bulldozer drive system test device of claim 3, wherein: The main frame (1) is provided with a hydraulic system and an electrical system (16).

8. The bulldozer drive system test device of claim 1, wherein: The central transmission (13) is connected with the steering and braking system (12).

9. The method of using a bulldozer drive system test device of claim 1, wherein: When the input end (5) is loaded, the flywheel (7) in the transfer case (6) is rotated, the flywheel (7) drives the torque converter (9) engaged with it to rotate, thereby driving the universal joint (10) to rotate, the universal joint (10) is connected with the gearbox (11), the gearbox (11) transmits to the central transmission (13), the central transmission (13) transmits to the steering clutch, the steering clutch transmits to the final transmission (14), and the final transmission (14) transmits to the output end (15) through the connecting discs on both sides.

10. The method of using a bulldozer drive system test device of claim 9, wherein: During the test, the working gear and the driving gear are loaded to simulate the working state of the whole machine.

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