CN217873553U - Hydraulic support electrohydraulic control valve group test bed - Google Patents

Abstract

The utility model provides a hydraulic support electricity liquid control valves test bench relates to the experimental technical field of control valves, installs hydraulic system in the test bench, and hydraulic system comprises oil tank subassembly, hydraulic pump group, control function valves, cooling system and test system, and the oil tank subassembly includes oil tank, liquid level liquid thermometer, air cleaner, level switch and temperature sensor, and liquid level liquid thermometer, air cleaner, level switch and temperature sensor all install on the oil tank. The utility model discloses the test bench adopts the modularized design, easy to assemble, uses, maintains and the extension in later stage to realize that the pressure detection of each working oil circuit and the real-time nature such as oil tank fluid temperature detect. Meanwhile, when the liquid level is reduced to a low liquid level, the system sends out an alarm signal, and when the liquid level is higher than a high liquid level, the system can also stop oiling and send out the alarm signal.

Description

Test bed for electrohydraulic control valve group of hydraulic support

Technical Field

The utility model relates to a hydraulic support electricity liquid control valves test technical field especially relates to hydraulic support electricity liquid control valves test bench.

Background

The hydraulic support electrohydraulic control valve group is a main supporting device of a coal face in China, and the operating valve is a key component on a hydraulic support. Factory testing must be performed.

Hydraulic support electricity liquid control valves need leave factory test before leaving factory to confirm whether hydraulic support electricity liquid control valves satisfies the designing requirement, but the test bench in existing market, overall structure is too complicated, and it is not convenient that the user uses, and the maintenance in the later stage of also being convenient for can't satisfy the requirement of testing personnel to hydraulic support electricity liquid control valves test bench.

Disclosure of Invention

The invention provides a test bed for an electro-hydraulic control valve group of a hydraulic support, which adopts a modular design and has the effects of convenience in installation, use, maintenance and later expansion.

In order to achieve the purpose, the invention provides the following technical scheme:

the test bed for the hydraulic support electrohydraulic control valve group comprises a test bed, wherein an oil tank assembly, a hydraulic pump set, a control valve group, an oil liquid cleanliness control system and a test system are installed in the test bed, the oil tank assembly comprises an oil tank, a liquid level liquid thermometer, a liquid level switch, a first air filter and a temperature sensor, the liquid level liquid thermometer, the liquid level switch, the first air filter and the temperature sensor are all installed on the oil tank, the control valve group comprises a main oil supply loop, an oil return path, a first proportional overflow valve and a first manual reversing valve, the main oil supply loop and the oil return path are all communicated with the oil tank, the first proportional overflow valve and the first manual reversing valve are all communicated with the main oil supply loop through oil paths, the hydraulic pump set is installed on the main oil supply loop, the oil liquid cleanliness control system comprises a low-pressure filter, a second electromagnetic reversing valve and a second low-pressure filter, the second electromagnetic reversing valve and the second low-pressure filter are communicated with the oil tank through oil pipes, and the low-pressure filter form a loop.

Preferably, the test system comprises two pressure sensors, and the two pressure sensors are respectively installed on the main oil supply loop and the oil return loop.

Preferably, the oil tank assembly further comprises a second air filter, the second air filter is connected with a reserve tank, and the reserve tank is communicated with the oil tank.

Preferably, the hydraulic pump group consists of a high-pressure plunger pump, a motor, a bell jar and a damping ring.

Preferably, the power of the motor is 37kW.

Preferably, the flow rate of the hydraulic pump set is 40L/min, and the working pressure of the hydraulic pump set is not more than 450bar.

Preferably, the high pressure filter has a filtration accuracy of 3 μ.

Preferably, the volume of the oil tank is 700L.

Compared with the prior art, the utility model has the advantages and positive effects that,

the utility model discloses, a withstand voltage for hydraulic support electricity liquid control valves, the shock test, be whether there are phenomenons such as oil leak and product reliability under the high-pressure impact of inspection hydraulic support electricity liquid control valves, adopt the modularized design in the design, hydraulic system is by the oil tank subassembly, hydraulic pump group, the control valves, fluid cleanliness control system and test system constitute, when using, easy to assemble, use, the extension of maintenance and later stage, can realize to the temperature through the temperature sensor and the pressure sensor who set up, the real-time measurement of pressure, before the oil return gets into the oil tank, can filter the oil return through high pressure filter, in order to guarantee that the oil return can satisfy the cleanliness requirement, and simultaneously, when the liquid level reduces to low liquid level or cross low, the system can send alarm signal.

Drawings

FIG. 1 is a schematic diagram of the electro-hydraulic control valve group test bed of the utility model;

fig. 2 is the utility model provides a hydraulic pressure schematic diagram of hydraulic support electrohydraulic control valves test bench.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment is as follows:

referring to fig. 1-2, the present invention provides a technical solution: the test bed for the hydraulic support electrohydraulic control valve group comprises a test bed 100, wherein an oil tank assembly, a hydraulic pump group 6, a control valve group, an oil cleanliness control system and a test system are installed in the test bed 100, the oil tank assembly comprises an oil tank 1, a liquid level liquid thermometer 2, a liquid level switch 4, a first air filter 5 and a temperature sensor 8, the liquid level liquid thermometer 2, the liquid level switch 4, the first air filter 5 and the temperature sensor 8 are all installed on the oil tank 1, the control valve group comprises a main oil supply loop, an oil return loop, a first proportional overflow valve 10 and a first manual reversing valve 11, the main oil supply loop and the oil return loop are both communicated with the oil tank 1, the first proportional overflow valve 10 and the first manual reversing valve 11 are both communicated with the main oil supply loop through oil paths, the hydraulic pump group 6 is installed on the main oil supply loop, the oil cleanliness control system comprises a low-pressure filter 9, a second electromagnetic reversing valve 12 and a second low-pressure filter 13, the low-pressure filter 9, the second electromagnetic reversing valve 12 and the second low-pressure filter 13 are communicated with the oil tank 1 through oil paths, and the low-pressure filter 9, the second electromagnetic reversing valve 12 and the second low-pressure filter 13 form a reversing loop.

In this embodiment, oil with a certain pressure and flow is provided, different function test loops are formed by switching through a control unit, and related pressure and temperature detection are set, a liquid level liquid thermometer 2 is used for visually inspecting the liquid level height and the oil temperature of an oil tank 1, a first air filter 5 is used for maintaining the balance between the pressure in the tank and the atmospheric pressure and simultaneously preventing particle impurities from being mixed and filtering sucked air in the oil filling process, a liquid level switch 4 is used for detecting the liquid level height of the oil tank, when the liquid level is lowered to a low liquid level, a system sends out an alarm signal, when the liquid level is higher than a high liquid level, oil filling is stopped and the alarm signal is sent, a temperature sensor 8 is used for detecting the oil temperature of the system and displaying real-time temperature on a display panel and sending out a high-temperature alarm, a hydraulic pump set 6 provides hydraulic oil with a certain pressure and flow for the system and integrates an unloading valve to meet the automatic loading and unloading function, and when the system is used, a cooling system can be added for controlling the oil temperature of the system.

Further, the test system includes pressure sensor 7, and pressure sensor 7 is provided with two altogether, and just two pressure sensor 7 install respectively on main oil supply return circuit and return oil way.

In this embodiment, the test system can realize the pressure detection of each working oil path and the real-time detection of the oil temperature of the oil tank 1.

Further, the oil tank subassembly still includes second air cleaner 3, and second air cleaner 3 is connected with the reserve tank, and reserve tank and oil tank 1 intercommunication.

In the present embodiment, the second air filter 3 serves to maintain the pressure in the reserve tank and the atmospheric pressure in balance, while preventing the particulate impurities from being mixed in during refueling and filtering the sucked air.

Further, the hydraulic pump unit 6 is composed of a high-pressure plunger pump, a motor, a bell jar and a damping ring.

In this embodiment, motor and oil pump pass through bell jar coupling joint and transmission, and the bell jar adopts motor shaft and pump shaft self-centering design, and the concentricity is high, and the damping ring comprises resistant oil rubber and aluminum alloy material, installs between bell jar flange and plunger pump, can effectively noise reduction and reduction vibrations.

Further, the power of the motor is 37kW.

In this embodiment, the power of the motor is 37kW, so that the motor can meet the test requirements.

Furthermore, the flow rate of the hydraulic pump unit 6 is 40L/min, and the working pressure is not more than 450bar.

In this embodiment, the flow and pressure of the hydraulic pump unit 6 are set, so that the hydraulic pump unit 6 can also protect the hydraulic pump unit 6 on the premise of providing sufficient power.

Further, the low pressure filter 9 has a filtering accuracy of 3 μ.

In the present embodiment, the return oil can be filtered by providing the low pressure filter 9.

Further, the volume of the fuel tank 1 is 700L.

In the present embodiment, the volume of the fuel tank 1 is set to 700L, so that the fuel tank 1 can supply a sufficient amount of fuel to meet the test requirements.

In this embodiment, the oil tank 1 is made of stainless steel, and stores the oil required by the system operating cycle, and dissipates a part of the heat generated during the system test process through heat exchange with air.

The utility model is used for withstand voltage of hydraulic support electricity liquid control valves, the shock test, be whether there are phenomenons such as oil leak and product reliability under the high-pressure impact of inspection hydraulic support electricity liquid control valves, adopt the modularized design in the design, hydraulic system is by the oil tank subassembly, hydraulic pump group 6, the control valves, fluid cleanliness control system and test system constitute, when using, easy to assemble, use, the extension of maintenance and later stage, can realize to the temperature through the temperature sensor 8 and the pressure sensor 7 that set up, the real-time measurement of pressure, before the oil return gets into oil tank 1, can filter the oil return through low pressure filter 9, in order to guarantee that the oil return can satisfy the cleanliness requirement, and simultaneously, when the liquid level reduces to low liquid level or cross lowly, the system can send alarm signal.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (7)

1. The test bed for the hydraulic support electrohydraulic control valve group comprises a test bed and is characterized in that an oil tank assembly, a hydraulic pump set, a control valve group, an oil cleanliness control system and a test system are installed in the test bed, the oil tank assembly comprises an oil tank, a liquid level liquid thermometer, a liquid level switch, a first air filter and a temperature sensor, the liquid level liquid thermometer, the liquid level switch, the first air filter and the temperature sensor are all installed on the oil tank, the control valve group comprises a main oil supply loop, an oil return loop, a first proportional overflow valve and a first manual reversing valve, the main oil supply loop and the oil return loop are all communicated with the oil tank, the first proportional overflow valve and the first manual reversing valve are all communicated with the main oil supply loop through oil paths, the hydraulic pump set is installed on the main oil supply loop, the oil cleanliness control system comprises a low-pressure filter, a second electromagnetic reversing valve and a second low-pressure filter, the second electromagnetic reversing valve and the second low-pressure filter are communicated with the oil tank through oil tubes, and the low-pressure filter form a loop.

2. The hydraulic support electrohydraulic control valve group test bed of claim 1, wherein: the testing system comprises two pressure sensors, wherein the two pressure sensors are arranged on the main oil supply loop and the oil return loop respectively.

3. The hydraulic support electrohydraulic control valve group test bed of claim 1, wherein: the oil tank subassembly still includes second air cleaner, second air cleaner is connected with the reserve tank, and reserve tank and oil tank intercommunication.

4. The hydraulic support electrohydraulic control valve group test bed of claim 1, wherein: the hydraulic pump set consists of a high-pressure plunger pump, a motor, a bell jar and a damping ring.

5. The hydraulic support electrohydraulic control valve group test bed of claim 1, wherein: the flow rate of the hydraulic pump set is 40L/min, and the working pressure of the hydraulic pump set is not more than 450bar.

6. The hydraulic support electrohydraulic control valve group test bed of claim 1, wherein: the filtering accuracy of the first air filter is 3 mu.

7. The hydraulic support electrohydraulic control valve group test bed of claim 1, wherein: the volume of the oil tank is 700L.

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