A multifunctional hydraulic detection device

Abstract

The present invention discloses a multi-functional hydraulic detection device, which includes a housing. Inside the housing, there are a pressurization circuit, a speed regulation and large-flow oil supply circuit, and a hydraulic oil tank. The pressurization circuit is connected to the speed regulation and large-flow oil supply circuit and the hydraulic oil tank. The speed regulation and large-flow oil supply circuit is connected to the hydraulic oil tank. The pressurization circuit consists of a motor M01, a hydraulic pump P01, an electro-hydraulic proportional relief valve V01, a check valve V02, a supercharger V03, an electromagnetic directional valve V04, a hydraulic lock V05, a ball valve V06, a ball valve V07, and a pressure sensor. The motor M01 is connected to the hydraulic pump P01. The hydraulic pump P01 is simultaneously connected to the electro-hydraulic proportional relief valve V01 and the check valve V02. Both the electro-hydraulic proportional relief valve V01 and the check valve V02 are connected to the supercharger V03. The supercharger V03 is respectively connected to the ball valve V06 and the ball valve V07 through the electromagnetic directional valve V04 and the hydraulic lock V05. The present invention realizes the functions of simple structure, low cost, easy maintenance, and suitability for whole-machine inspection.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic testing, and particularly relates to a multifunctional hydraulic detection device. Background Art

[0002] In recent years, with the improvement of the domestic manufacturing level, customers have higher and higher requirements for the performance of the whole machine. As the main part of mechanical equipment, the hydraulic system directly affects the performance of the whole machine. In order to meet the needs of customers, the requirements for hydraulic components are getting higher and higher. In order to meet the testing and experimental requirements, many whole machine manufacturers also introduce some hydraulic testing systems from abroad. These hydraulic testing equipment are often expensive and difficult to maintain, and are not suitable for the incoming parts inspection and experimental needs of whole machine manufacturers.

[0003] Therefore, designing a device with a simple structure, low cost, simple maintenance, and suitable for whole machine inspection is exactly the problem to be solved by the inventor. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a multifunctional hydraulic detection device, which can achieve the functions of simple structure, low cost, simple maintenance, and suitable for whole machine inspection.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a multifunctional hydraulic detection device, which includes a housing. Inside the housing, there are arranged a pressurization circuit, a speed regulation and large-flow oil supply circuit, and a hydraulic oil tank. The pressurization circuit is connected to the speed regulation and large-flow oil supply circuit and the hydraulic oil tank. The speed regulation and large-flow oil supply circuit is connected to the hydraulic oil tank. The pressurization circuit consists of a motor M01, a hydraulic pump P01, an electro-hydraulic proportional relief valve V01, a check valve V02, a supercharger V03, an electromagnetic directional valve V04, a hydraulic lock V05, a ball valve V06, a ball valve V07, and a pressure sensor. The motor M01 is connected to the hydraulic pump P01. The hydraulic pump P01 is simultaneously connected to the electro-hydraulic proportional relief valve V01 and the check valve V02. Both the electro-hydraulic proportional relief valve V01 and the check valve V02 are connected to the supercharger V03. The supercharger V03 is respectively connected to the ball valve V06 and the ball valve V07 through the electromagnetic directional valve V04 and the hydraulic lock V05.

[0006] Further, the speed regulation and large-flow oil supply circuit consists of a motor M02, a hydraulic pump P02, an overflow valve assembly V19, a check valve V18, a filter F05, an electro-hydraulic proportional speed control valve V17, a check valve V16, a two-way directional valve assembly V15, a three-way ball valve V12, a check valve V11, an electromagnetic directional valve V10, a two-way directional valve assembly V13, a ball valve V08, a ball valve V09, a flow meter F01, and a pressure sensor.

[0007] Further, the motor M02 is connected to a hydraulic pump P02. The hydraulic pump P02 is simultaneously connected to a relief valve assembly V19 and a check valve V18. The relief port of the relief valve assembly V19 is connected to the hydraulic oil tank.

[0008] Further, the check valve V18 is simultaneously connected to a filter F05 and a two-way directional valve assembly V15. The filter F05 is connected to an electro-hydraulic proportional speed control valve V17. The electro-hydraulic proportional speed control valve V17 is connected to the two-way directional valve assembly V15 through a check valve V16.

[0009] Further, the two-way directional valve assembly V15 is simultaneously connected to a three-way ball valve V12 and a two-way directional valve assembly V13. The third passage of the three-way ball valve V12 and the two-way directional valve assembly V13 are both connected to an electromagnetic directional valve V10 through a check valve V11. The check valve V11 is connected to a flow meter F01. The second passage of the three-way ball valve V12 is connected to the electromagnetic directional valve V10. The two-way directional valve assembly V13 is connected to the hydraulic oil tank.

[0010] Further, the electromagnetic directional valve V10 is simultaneously connected to a ball valve V08 and a ball valve V09.

[0011] Further, a liquid level gauge SD001, a liquid level gauge SD002, a liquid level gauge SD003, a temperature sensor SM006, a return oil filter F02, a suction filter F03, and a suction filter F04 are arranged in the hydraulic oil tank.

[0012] Further, the liquid level gauges SD001, SD002, and SD003 are at different heights.

[0013] Further, the temperature sensor SM006 is arranged in the middle of the hydraulic oil tank.

[0014] Further, the return oil filter F02, the suction filter F03, and the suction filter F04 have the same structure.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention uses common components such as motors, pumps, and various valves, which are assembled and connected into a functional structure with a small volume, simple structure, low manufacturing cost, and convenient installation and maintenance. By directly accessing the hydraulic system of the excavator, the cylinders and check valves are detected, and the operation is convenient, avoiding cumbersome operation processes. At the same time, because common components are used and connected in a simple connection method, the process of repairing and replacing components is simplified to the simplest, achieving the functions of simple structure, low cost, simple repair, and being suitable for the overall inspection of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is the structural schematic diagram of the present invention.

[0018] Description of reference numerals: 1 - oil cylinder to be detected; 2 - one-way valve to be detected. Specific embodiments

[0019] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the application.

[0020] See Figure 1 This is the structural schematic diagram of the present invention. A multifunctional hydraulic detection device includes a housing. Inside the housing, a pressurization circuit, a speed regulation and large-flow oil supply circuit, and a hydraulic oil tank are provided. The pressurization circuit is connected to the speed regulation and large-flow oil supply circuit and the hydraulic oil tank. The speed regulation and large-flow oil supply circuit is connected to the hydraulic oil tank. The pressurization circuit consists of a motor M01, a hydraulic pump P01, an electro-hydraulic proportional relief valve V01, a one-way valve V02, a supercharger V03, an electromagnetic directional control valve V04, a hydraulic lock V05, a ball valve V06, a ball valve V07, and a pressure sensor. The motor M01 is connected to the hydraulic pump P01. The hydraulic pump P01 is simultaneously connected to the electro-hydraulic proportional relief valve V01 and the one-way valve V02. Both the electro-hydraulic proportional relief valve V01 and the one-way valve V02 are connected to the supercharger V03. The supercharger V03 is respectively connected to the ball valve V06 and the ball valve V07 through the electromagnetic directional control valve V04 and the hydraulic lock V05.

[0021] It can be used for the pressure resistance detection of hydraulic components. Taking the pressure resistance detection of the oil cylinder to be detected 1 as an example, during the pressure resistance detection of the oil cylinder, the ball valves V08 and V09 are closed. When the oil cylinder is fully extended or fully retracted, according to the pressure value feedback by the pressure sensor SM001, the current value of the electromagnetic coil YM001 on the electro-hydraulic proportional relief valve V01 is adjusted. After being pressurized by the supercharger, the pressure received by the oil cylinder reaches the test pressure. Among them, the supercharger V03 in the pressurization circuit has a pressurization function, which can make the output of the hydraulic circuit greater than the pressure set by the electro-hydraulic proportional relief valve. The electromagnetic proportional valve V04 can achieve the directional control function.

[0022] The speed regulation and large-flow oil supply circuit consists of motor M02, hydraulic pump P02, overflow valve assembly V19, check valve V18, filter F05, electro-hydraulic proportional speed control valve V17, check valve V16, two-way directional control valve assembly V15, three-way ball valve V12, check valve V11, solenoid-operated directional control valve V10, two-way directional control valve assembly V13, ball valve V08, ball valve V09, flowmeter F01, and pressure sensor. Motor M02 is connected to hydraulic pump P02. Hydraulic pump P02 is simultaneously connected to overflow valve assembly V19 and check valve V18. The overflow port of overflow valve assembly V19 is connected to the hydraulic oil tank. Check valve V18 is simultaneously connected to filter F05 and two-way directional control valve assembly V15. Filter F05 is connected to electro-hydraulic proportional speed control valve V17. Electro-hydraulic proportional speed control valve V17 is connected to two-way directional control valve assembly V15 through check valve V16. Two-way directional control valve assembly V15 is simultaneously connected to three-way ball valve V12 and two-way directional control valve assembly V13. The third passage of three-way ball valve V12 and two-way directional control valve assembly V13 are both connected to solenoid-operated directional control valve V10 through check valve V11. Check valve V11 is connected to flowmeter F01. The second passage of three-way ball valve V12 is connected to solenoid-operated directional control valve V10. Two-way directional control valve assembly V13 is connected to the hydraulic oil tank. Solenoid-operated directional control valve V10 is simultaneously connected to ball valve V08 and ball valve V09.

[0023] In the hydraulic circuit, the overflow valve group V19 adopts the form of a two-way cartridge valve plus an electro-hydraulic proportional overflow valve, which can adapt to the large-flow overflow of the system. The electro-hydraulic proportional speed control valve V17 and the two-way directional control valve V15 can respectively achieve speed regulation control and large-flow oil supply control. When the electromagnetic coil YD006 of the two-way directional control valve V15 is de-energized, by adjusting the current value of the electromagnetic coil YM002 of the electro-hydraulic proportional speed control valve V17, speed regulation control can be achieved. When the electromagnetic coil YD006 of the two-way directional control valve V15 is energized, large-flow oil supply can be achieved.

[0024] When ports 1 and 3 of the three-way ball valve V12 are connected, the hydraulic oil returns to the tank through the flowmeter F01. Taking the check valve V14 of the check valve 2 to be detected as an example, in this case, the flow rate passing through the check valve V14 can be detected through the flowmeter. The pressure sensors SM004 and SM005 can respectively measure the inlet and outlet pressures of the check valve, and the pressure difference and flow rate relationship between the inlet and outlet of the check valve V14 can be measured.

[0025] Close ball valves V06 and V07. When ports 1 and 2 of the three-way ball valve V12 are connected, the hydraulic oil can pass through the solenoid-operated directional control valve V10 to conduct start-up pressure tests, buffer tests, etc. on the oil cylinder. Among them, when the two-way directional control valve V13 is energized, it can achieve the functions of large-flow oil return and unloading.

[0026] There are liquid level gauges SD001, SD002, and SD003, temperature sensor SM006, return oil filter F02, suction filter F03, and suction filter F04 installed in the hydraulic oil tank. The heights at which liquid level gauges SD001, SD002, and SD003 are located are different. The temperature sensor SM006 is set in the middle of the hydraulic oil tank. The return oil filter F02, suction filter F03, and suction filter F04 have the same structure.

[0027] The liquid level gauge SD003 can achieve high liquid level alarm, SD002 can achieve low liquid level alarm, SD001 can achieve low liquid level shutdown. The differential pressure alarm SD004 in the filter F02 can achieve oil pollution alarm, timely reminding the staff to replace the filter element. The temperature sensor SM006 can achieve temperature monitoring and high temperature alarm function.

[0028] The present invention uses common components such as motors, pumps, and various valves, assembled and connected into a functional structure with small volume, simple structure, low manufacturing cost, and convenient installation and maintenance. By directly accessing the hydraulic system of the excavator, it detects the oil cylinder and check valve, with convenient operation, avoiding cumbersome operation processes. At the same time, because common components are used and connected in a simple connection method, the process of repairing and replacing parts is simplified to the simplest, achieving the functions of simple structure, low cost, simple repair, and being suitable for the overall machine inspection.

Claims

1. A multi-functional hydraulic detection device, characterized in that: It includes a housing, and a pressurization circuit, a speed regulation and large-flow oil supply circuit, and a hydraulic oil tank are arranged inside the housing. The pressurization circuit is connected to the speed regulation and large-flow oil supply circuit and the hydraulic oil tank. The speed regulation and large-flow oil supply circuit is connected to the hydraulic oil tank. The pressurization circuit consists of a motor M01, a hydraulic pump P01, an electro-hydraulic proportional relief valve V01, a check valve V02, a supercharger V03, an electromagnetic directional valve V04, a hydraulic lock V05, a ball valve V06, a ball valve V07, and a pressure sensor. The motor M01 is connected to the hydraulic pump P01. The hydraulic pump P01 is simultaneously connected to the oil inlets of the electro-hydraulic proportional relief valve V01 and the check valve V02. The oil outlets of the electro-hydraulic proportional relief valve V01 and the check valve V02 are both connected to the supercharger V03. The supercharger V03 is respectively connected to the ball valve V06 and the ball valve V07 through the electromagnetic directional valve V04 and the hydraulic lock V05. The speed regulation and large-flow oil supply circuit consists of a motor M02, a hydraulic pump P02, a relief valve assembly V19, a check valve V18, a filter F05, an electro-hydraulic proportional speed control valve V17, a check valve V16, a two-way directional valve assembly V15, a three-way ball valve V12, a check valve V11, an electromagnetic directional valve V10, a two-way directional valve assembly V13, a ball valve V08, a ball valve V09, a flowmeter F01, and a pressure sensor. The hydraulic pump P02 is simultaneously connected to the oil inlets of the relief valve assembly V19 and the check valve V18. The oil outlet of the check valve V18 is simultaneously connected to the filter F05 and the two-way directional valve assembly V15. The filter F05 is connected to the electro-hydraulic proportional speed control valve V17. The electro-hydraulic proportional speed control valve V17 is connected to the two-way directional valve assembly V15 through the check valve V16. The two-way directional valve assembly V15 is simultaneously connected to port 1 of the three-way ball valve V12 and the two-way directional valve assembly V13. Port 3 of the three-way ball valve V12 and the two-way directional valve assembly V13 are both connected to the electromagnetic directional valve V10 through the oil outlet of the check valve V11. The oil outlet of the check valve V11 is connected to the flowmeter F01. Port 2 of the three-way ball valve V12 is connected to the electromagnetic directional valve V10. The two-way directional valve assembly V13 is connected to the hydraulic oil tank. The electromagnetic directional valve V10 is simultaneously connected to the ball valve V08 and the ball valve V09. When the electromagnetic coil YD006 of solenoid valve 01 of the two-way directional valve assembly V15 loses power, solenoid valve 01 of the two-way directional valve assembly V15 is in the right position. At this time, the cartridge valve 03 of the two-way directional valve assembly V15 remains closed under the action of pressure and spring force. The oil at the oil outlet of the check valve V18 is adjusted by the flow of the filter F05 and the electro-hydraulic proportional speed control valve V17, and then passes through the check valve V16.It flows from the cartridge valve 03 bypassing the two-way directional valve assembly V15 to port 1 of the three-way ball valve V12. By adjusting the current value of the electromagnetic coil YM002 of the electro-hydraulic proportional speed control valve V17, speed control is achieved. When the electromagnetic coil YD006 of the solenoid valve 01 of the two-way directional valve assembly V15 is energized, the solenoid valve 01 of the two-way directional valve assembly V15 is in the left position, and the cartridge valve 03 of the two-way directional valve assembly V15 opens. The oil at the outlet of the check valve V18 flows through the cartridge valve 03 of the two-way directional valve assembly V15 and then to port 1 of the three-way ball valve V12, which is in the large-flow oil supply state. When ports 1 and 3 of the three-way ball valve V12 are connected, the hydraulic oil returns to the tank through the flowmeter F01. The ball valves V06 and V07 are closed. When ports 1 and 2 of the three-way ball valve V12 are connected, the hydraulic oil passes through the electromagnetic directional valve V10, and the starting pressure test and buffer test of the oil cylinder can be carried out. Among them, the two-way directional valve assembly V13 can achieve the functions of large-flow oil return and unloading when it is energized., 2. A multifunctional hydraulic detection device according to claim 1, wherein a liquid level gauge SD001, a liquid level gauge SD002, and a liquid level gauge SD003, a temperature sensor SM006, a return oil filter F02, a suction oil filter F03, and a suction oil filter F04 are provided in the hydraulic oil tank.

3. A multifunctional hydraulic detection device according to claim 2, characterized in that: The heights of the liquid level gauge SD001, the liquid level gauge SD002, and the liquid level gauge SD003 are different.

4. A multifunctional hydraulic detection device according to claim 2, characterized in that: The temperature sensor SM006 is arranged in the middle of the hydraulic oil tank.

5. A multi-functional hydraulic detection device according to claim 2, characterized in that: The return oil filter F02, the suction oil filter F03, and the suction oil filter F04 have the same structure.

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