Flywheel loading device for impact test of hydraulic pump and motor

Abstract

The utility model discloses a flywheel loading device for hydraulic pump, motor carries out impact test relates to impact test technical field. Including main shaft, flange, flywheel, first bearing seat, oil collecting tank, liquid level relay, third bearing seat, box, workstation, box cover, one end of measured motor connection flange, the other end of flange connects third bearing seat, one end of measured device connection main shaft, main shaft rotatory connection third bearing seat, the other end of main shaft rotatory connection first bearing seat, and flywheel is connected with main shaft through expansion tight cover, and box cover covers on the box, and the box connects workstation, and oil collecting tank sets up below measured device, and liquid level relay installs in oil collecting tank, and measured device is hydraulic pump or motor. The utility model discloses can be according to different load working condition flexible adjustment impact load, and in the process of hydraulic pump, motor loading relies on the inertial force of flywheel inertia, can effectively reduce the loading power of system, reduce system power loss, improve system efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of impact testing technology, and more specifically, it relates to a flywheel loading device for impact testing of hydraulic pumps and motors. Background Technology

[0002] A hydraulic motor, also known as an oil motor, converts the hydraulic pressure energy provided by a hydraulic pump into the mechanical energy (torque and speed) of its output shaft. The hydraulic pump is the power component of a hydraulic system, driven by an engine or electric motor. It draws oil from the hydraulic tank, pressurizes it, and discharges it to the actuators. As the most crucial components in a hydraulic transmission system, the reliability of hydraulic pumps and motors is critical to the system's performance. Impact tests on hydraulic pumps and motors can verify their performance under impact loads. Currently, in life endurance testing of hydraulic pumps and motors, relief valves are typically used as the impact loading device. However, the relief valve generates excessive heat, causing severe overheating problems in the hydraulic system and requiring additional cooling devices, thus increasing costs. Furthermore, existing impact loading schemes lack energy recovery and reuse capabilities, resulting in low system energy utilization. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a flywheel loading device for impact testing of hydraulic pumps and motors. It is not only simple in structure, but also can flexibly adjust the impact load according to different load conditions. During the loading process of hydraulic pumps and motors, the inertial force generated by the flywheel inertia can effectively reduce the loading power of the system, reduce the power loss of the system, and improve the system efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a flywheel loading device for impact testing of hydraulic pumps and motors, characterized in that it includes a main shaft, a flange, several flywheels, a first bearing seat, an oil collection tank, a liquid level relay, a third bearing seat, a housing, a worktable, and a cover. The motor under test is fixedly connected to one end of the flange, and the other end of the flange is fixedly connected to the third bearing seat. The device under test is fixedly connected to one end of the main shaft through a coupling. The main shaft passes through and rotatably connects to the third bearing seat, and the other end of the main shaft is rotatably connected to the first bearing seat. The flywheels are located between the first and third bearing seats and are connected to the main shaft through a shrink sleeve. Both the first and third bearing seats are installed in the housing, and the cover covers the housing. The housing is fixedly connected to the worktable. The oil collection tank is located below the device under test, and the liquid level relay is installed in the oil collection tank. The device under test is a hydraulic pump or motor. A flywheel is also installed on the main shaft.

[0005] Preferably, a guide rail is provided in the housing along the main shaft axis, the slider is slidably connected to the guide rail, the first bearing seat is fixedly connected to the slider, and the second bearing seat is also fixedly connected to the slider. One end of the lead screw is rotatably connected to the second bearing seat, and the other end passes through and is threaded into the housing. The handwheel is located outside the housing and is fixedly connected to the lead screw.

[0006] The beneficial effects of adopting the above technical solution are as follows: 1. The flywheel loading device of this utility model uses the main shaft to treat the flywheel as an external load for impact in hydraulic pump and motor impact tests. It has a simple structure and the load can be flexibly adjusted by increasing or decreasing the number of flywheels according to different loading conditions.

[0007] 2. The flywheel loading device of this utility model uses the main shaft to treat the flywheel as an external load for impact during hydraulic pump and motor impact tests. It can utilize the inertia of the flywheel to generate an energy recovery effect, thereby maximizing the energy efficiency of the loading system.

[0008] 3. The flywheel loading device of this utility model uses the main shaft to treat the flywheel as an external load for impact during hydraulic pump and motor impact tests. Due to the inertia of the flywheel during the impact process, the peak power of the loading system can be reduced. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural diagram of the flywheel housing; In the diagram: 1. Device under test, 2. Flange, 3. Flywheel, 4. Fuma wheel, 5. First bearing housing, 6. Slider, 7. Handwheel, 8. Lead screw, 9. Guide rail, 10. Second bearing housing, 11. Liquid level relay, 12. Oil collection tank, 13. Third bearing housing, 14. Housing, 15. Workbench, 16. Housing cover. Detailed Implementation

[0010] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0011] like Figure 1-2As shown, a flywheel loading device for impact testing of hydraulic pumps and motors includes a main shaft, a flange 2, several flywheels 3, a locking element 4, a first bearing housing 5, an oil collection tank 12, a level relay 11, a third bearing housing 13, a housing 14, a worktable 15, and a cover 16. The device under test 1 is fixedly connected to one end of the flange 2, and the other end of the flange 2 is fixedly connected to the third bearing housing 13. Here, the device under test 1 is a motor. The device under test 1 is fixedly connected to one end of the main shaft via a coupling, and the main shaft passes through and rotatably connects to the third bearing housing 13. The other end of the main shaft is rotatably connected to the first bearing housing 5. The flywheels 3 are located between the first bearing housing 5 and the third bearing housing 13 and are connected to the main shaft via a shrink sleeve. Both the first bearing housing 5 and the third bearing housing 13 are installed inside the housing 14, and the cover 16 covers the housing 14. During the test, the flywheels 3 rotate, and the housing 14 and the cover 16 protect the flywheels 3 by covering them. The housing 14 is fixedly connected to the workbench 15. The oil collection tank 12 is located below the device under test 1, and the level relay 11 is installed inside the oil collection tank 12. The oil collection tank 12 can collect and recycle the hydraulic oil leaked during motor replacement. The oil collection tank 12 has a level relay 11 for detecting the oil level. The rotational speed of the flywheel 3 can be detected using a Hall sensor.

[0012] A guide rail 9 is provided inside the housing 14 along the axis of the main shaft. A slider 6 is slidably connected to the guide rail 9. A first bearing seat 5 is fixedly connected to the slider 6, and a second bearing seat 10 is also fixedly connected to the slider 6. One end of the lead screw 8 is rotatably connected to the second bearing seat 10, and the other end passes through and is threaded into the housing 14. A handwheel 7 is located outside the housing 14 and is fixedly connected to the lead screw 8. Rotating the handwheel 7 causes the lead screw 8 to move the second bearing seat 10 and the slider 6 along the guide rail 9, allowing the second bearing seat 10 to be removed from the main shaft for easy disassembly and assembly of the flywheel 3. In this application, the flywheel 4 can be connected to the main shaft via a connector. The top of the connector is partially rounded to support the main shaft, and the flywheel is connected to the bottom of the connector.

[0013] During the movement of the second bearing housing 10, the fan wheel 4 mounted on the main shaft supports the main shaft, making it easier for the second bearing housing 10 to be removed. The fan wheel 4 is only installed on the main shaft when disassembling and assembling the flywheel 3; it needs to be removed during testing. When the motor under test rotates, it drives the flywheel 3 to rotate, and the flywheel 3 impacts the main shaft and the motor under test.

[0014] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A flywheel loading device for impact testing of hydraulic pumps and motors, characterized in that, The device includes a main shaft, flange (2), several flywheels (3), a first bearing housing (5), an oil collection tank (12), a liquid level relay (11), a third bearing housing (13), a housing (14), a worktable (15), and a housing cover (16). The device under test (1) is fixedly connected to one end of the flange (2), and the other end of the flange (2) is fixedly connected to the third bearing housing (13). The device under test (1) is fixedly connected to one end of the main shaft through a coupling. The main shaft passes through and is rotatably connected to the third bearing housing (13). The other end of the main shaft is rotatably connected to the first bearing housing (5). The flywheels (3) are located between the first bearing housing (5) and the third shaft. The bearing seats (13) are connected to the main shaft through a shrink sleeve. The first bearing seat (5) and the third bearing seat (13) are both installed in the housing (14). The housing cover (16) covers the housing (14). The housing (14) is fixedly connected to the workbench (15). The oil collection tank (12) is set below the device under test (1). The liquid level relay (11) is installed in the oil collection tank (12). The device under test (1) is a hydraulic pump or motor. The slider (6) is slidably connected to the guide rail (9). The first bearing seat (5) is fixedly connected to the slider (6). The second bearing seat (10) is also fixedly connected to the slider (6).

2. The flywheel loading device for impact testing of hydraulic pumps and motors according to claim 1, characterized in that, A fuma wheel (4) is also installed on the main shaft.

3. The flywheel loading device for impact testing of hydraulic pumps and motors according to claim 1, characterized in that, A guide rail (9) is provided inside the housing (14) along the axis of the main shaft.

4. The flywheel loading device for impact testing of hydraulic pumps and motors according to claim 1, characterized in that, One end of the lead screw (8) is rotatably connected to the second bearing seat (10), and the other end passes through and is threaded into the housing (14). The handwheel (7) is located outside the housing (14) and is fixedly connected to the lead screw (8).

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