A hand release pump test bench

Abstract

The application relates to the technical field of hydraulic equipment testing, in particular to a manual release pump testing table which can effectively improve testing efficiency, comprising a testing support, a testing platform arranged on the testing support, a fixing testing device arranged on the testing platform, a testing bottom plate, an installation platform arranged on the testing bottom plate, a pressing device arranged at the installation platform, a pressing block with an oil port transition plate arranged on one side of the installation platform, a valve rod cylinder and a pump rod cylinder arranged side by side on the other side of the installation platform, a piston rod of the valve rod cylinder corresponding to a valve rod of a measured pump, a piston rod of the pump rod cylinder corresponding to a shell of the measured pump, the pressing block being connected with a driving mechanism and being provided with a hydraulic element matched with the oil port transition plate.

Description

Technical Field

[0001] This invention relates to the field of hydraulic equipment testing technology, specifically a manual release pump test bench. Background Technology

[0002] Manual release pumps are frequently used on aerial work platforms. After the product is manufactured, it needs to undergo comprehensive testing to ensure reliable use and improve safety. Existing testing methods are all simplistic, involving manually securing the product to the high-pressure oil tank and then manually conducting the test. This process is cumbersome and inefficient. Summary of the Invention

[0003] To address the problem of low testing efficiency in existing manual release pump tests, this invention provides a manual release pump test bench that can effectively improve testing efficiency.

[0004] The technical solution is as follows: A manual release pump test bench, characterized in that it includes a test bracket, a test platform is mounted on the test bracket, a fixed test device is mounted on the test platform, the fixed test device includes a test base plate, an installation platform is mounted on the test base plate, a clamping device is mounted on the installation platform, a pressure block with an oil port transition plate is mounted on one side of the installation platform, and a valve stem cylinder and a pump stem cylinder are arranged side by side on the other side. The piston rod of the valve stem cylinder corresponds to the valve stem of the pump under test, and the piston rod of the pump stem cylinder corresponds to the housing of the pump under test. The pressure block is connected to a drive mechanism and equipped with a hydraulic component that cooperates with the oil port transition plate; the drive mechanism includes a lead screw mounted on a lead screw seat, one end of which is connected to the pressure block and the other end is connected to a rotating wheel, rotating the rotating wheel to drive the pressure block to move; the hydraulic component includes an oil suction valve, a pressure holding valve, and a pressure transmitter, the oil suction valve is connected to an oil tank located above the fixed test device through an oil inlet pipe, the pressure holding valve is connected to a waste oil collection tank through an oil outlet pipe, and the waste oil collection tank is connected to the oil tank through a return oil pipe with a return oil pump; the hydraulic component is also equipped with an air blowing valve.

[0005] A further feature is that the clamping device is a rotary cylinder with a pressure block.

[0006] With this invention, the manual release pump to be tested is placed on the mounting platform and fixed in place. Then, the oil port transition plate on the pressure block is pressed against the oil port of the manual release pump under test. The valve stem cylinder presses down the valve stem of the manual release pump. The pump stem cylinder simulates manual pressure at a certain frequency to conduct the test. The test reduces manual labor, simulates the actual use environment, and improves the test efficiency. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 Main view of the fixed test device; Figure 3 Top view of the fixed testing device; Figure 4 This is a schematic diagram of a hydraulic system. Detailed Implementation

[0008] See Figures 1 to 4 As shown, a manual release pump test bench includes a test bracket 1, a test platform 2 on the test bracket 1, a fixed test device 3 on the test platform 2, an oil tank 4 positioned above the fixed test device 3, and a test base plate 5 on the test base plate 5 with an installation platform 6. A clamping device, typically a rotary cylinder 7, is provided at the installation platform 6. A pressure block 9 with an oil port transition plate 8 is provided on one side of the installation platform 6, and a valve stem cylinder 10 and a pump stem cylinder 11 arranged side by side are provided on the other side. The piston rod of the valve stem cylinder 10 corresponds to the valve stem of the pump 12 under test, and the piston rod of the pump stem cylinder 11 corresponds to the housing of the pump 12 under test. The pressure block 9 is connected to a drive mechanism and is equipped with a hydraulic component 13 that cooperates with the oil port transition plate 8.

[0009] The drive mechanism includes a lead screw 17 mounted on the lead screw seat 22. One end of the lead screw 17 is connected to the pressure block 9 and the other end is connected to the rotating wheel 18. The bottom of the pressure block 9 is connected to the guide rod through the slider 20. Rotating the rotating wheel 18 drives the pressure block 9 to move, so that the oil port transition plate 8 on the pressure block 9 can be connected to the oil port of the pump 12 under test. The oil port transition plate 8 can be replaced to effectively accommodate the testing of manual pumps with different oil port sizes.

[0010] The test procedure is as follows: The pump under test 12 is placed on the mounting platform 6. The rotary cylinder 7 is used to press the pump under test 12. The rotating wheel 18 is manually rotated, which drives the lead screw 17 to rotate and push the pressure block 9 forward, pressing the three oil ports on the oil port transition plate 8 on the pressure block 9 onto the three oil ports of the pump under test 12. When the start button is pressed, the valve stem cylinder 10 presses down the valve stem of the pump under test 12, and the pump stem cylinder 11 simulates manual pressure at a certain frequency to conduct the test.

[0011] Hydraulic components are integrated on the pressure block 9, which effectively reduces the number of times the manual pump needs to build up pressure, simulates the actual use environment, and improves efficiency.

[0012] The hydraulic component 13 includes a suction valve 14, a pressure holding valve 15, and a pressure transmitter 16. The suction valve 14 is connected to the oil tank 4 through the oil inlet pipe. Since the oil tank 4 is located at a high position, the hydraulic oil enters the pump under test 12 by gravity. The pressure holding valve 15 is connected to the waste oil collection tank 19 through the oil outlet pipe. The hydraulic component is also equipped with an air blowing valve 21.

[0013] The hydraulic principle is as follows: During the test, the suction valve 14 is opened, and the hydraulic oil in the tank flows to the suction port of the pump under test 12 under gravity. The pressure holding valve 15 is closed, and the valve stem cylinder 10 simulates manual operation to pressurize the pump. The pressure transmitter 16 detects the pressure magnitude and the pressure holding effect. After the test, the air blowing valve 21 and the pressure holding valve 15 are opened, and compressed air is used to blow away the residual oil in the pump under test 12. The resulting waste oil enters the waste oil collection tank 19. The oil in the waste oil collection tank 19 can be self-circulated and filtered, or the filtered oil can be pumped back to the oil tank 4 for reuse.

Claims

1. A manual release pump test bench, characterized in that, It includes a test bracket, on which a test platform is mounted. A fixed test device is mounted on the test platform, and the fixed test device includes a test base plate. An installation platform is mounted on the test base plate, and a clamping device is installed on the installation platform. One side of the installation platform has a pressure block with an oil port transition plate, and the other side has a valve stem cylinder and a pump stem cylinder arranged side-by-side. The piston rod of the valve stem cylinder corresponds to the valve stem of the pump under test, and the piston rod of the pump stem cylinder corresponds to the housing of the pump under test. The valve stem cylinder and the pump stem cylinder work together; the valve stem cylinder first presses down to control the valve stem state of the pump under test, and the pump stem cylinder subsequently... The reciprocating motion at a set frequency completely simulates manual pressure operation. The pressure block is connected to a drive mechanism and equipped with hydraulic components that cooperate with the oil port transition plate. The drive mechanism includes a lead screw mounted on a lead screw seat. One end of the lead screw is connected to the pressure block, and the other end is connected to a rotating wheel. Rotating the rotating wheel drives the pressure block to move. The hydraulic components include an oil suction valve, a pressure holding valve, and a pressure transmitter. The oil suction valve is connected to an oil tank located above the fixed test device via an oil inlet pipe. The pressure holding valve is connected to a waste oil collection tank via an oil outlet pipe. The waste oil collection tank is connected to the oil tank via a return oil pipe with a return oil pump. The hydraulic components are also equipped with an air blowing valve.

2. The manual release pump test bench according to claim 1, characterized in that, The clamping device is a rotary cylinder with a pressure block.

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