KR100970655B1 - Hydraulic test apparatus - Google Patents

Abstract

The present invention relates to a hydraulic test apparatus, the hydraulic test apparatus according to the present invention is an oil storage tank in which distribution oil is stored; A pump for pumping oil in the oil storage tank; A pressure controller for adjusting the pressure of the oil pumped from the pump to a plurality of different pressure states; A plurality of solenoid valve for controlling the supply of oil through the pressure regulator; A connection supply unit supplying oil to a test target device at different pressures according to the operation of the solenoid valve; It is connected to the test target device and having a recovery passage for recovering the oil recovered through the test target device to the oil storage tank, the hydraulic test device according to the present invention is a component of the pre-operation test process of a large hydraulic device In order to improve the working efficiency of the hydraulic system by carrying out the pre-assembly in advance so that it can be put into work immediately after assembly, and also by loading and configuring each component in a separate transport trailer, the test work efficiency can be further improved. It is effective.

Description

Hydraulic test apparatus

1 is a block diagram of a hydraulic test apparatus according to the present invention.

2 is a hydraulic circuit diagram of a hydraulic test apparatus according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

Oil storage tank

110 ... pump

120 ... pressure adjustment

130, 140 ... solenoid valve

150, 160 ... connected supply

The present invention relates to a hydraulic test apparatus, and more particularly, to a hydraulic test apparatus that can easily test the leakage and operating state of the hydraulic path of various mechanical devices.

In general, the operation of mechanically actuated devices is hydraulic or pneumatic. Pneumatics are used primarily for low weight and quick action, while hydraulics are used primarily for demanding large forces or lifting heavy objects. Therefore, hydraulic equipment is quite large in size and size.

On the other hand, among the machinery that uses such hydraulic pressure is a spindle device used in the manufacture of aircraft. When the spindle device breaks down, the entire parts are disassembled, the broken parts are repaired, and then reassembled and used. Since the size is large and the number of parts is large, work time for disassembly and assembly is considerably high.

After the assembly is completed for use, the pre-test process is essential to test whether each function is working properly. In other words, the spindle device is subjected to a process of checking whether tool clamping and unclamping functions normally, gear shifting, and other oils.

However, since these test processes are performed after assembling all parts, if an abnormal part occurs after assembly, there is a problem that the test process must be performed again after reassembling after repairing each part by disassembling each part.

Each test requires approximately nine to twelve runs. However, the time for one test usually takes about 30 minutes, so it takes about 4 and a half to 6 hours to complete the entire test. Therefore, the work time for performing the test is excessively consumed, and there is a problem in that the operation efficiency of the device is lowered.

 The present invention is to solve the above problems, an object of the present invention is to be able to perform a pre-operation test process of a large hydraulic machine for each operating part in advance before assembling parts to be put into operation immediately after assembling parts It is to provide a hydraulic test device to improve the use efficiency of the hydraulic device.

Hydraulic test apparatus according to the present invention for achieving the above object is an oil storage tank in which distribution oil is stored; A pump for pumping oil in the oil storage tank; A pressure controller for adjusting the pressure of the oil pumped from the pump to a plurality of different pressure states; A plurality of solenoid valve for controlling the supply of oil through the pressure regulator; A connection supply unit supplying oil to a test target device at different pressures according to the operation of the solenoid valve; And a recovery passage connected to the device under test and recovering oil recovered through the device under test to the oil storage tank.

And preferably, the pressure control unit is a main pressure control unit for adjusting the pressure of the oil pumped from the pump, branched from the main pressure control unit to adjust the pressure of the oil passing through the main pressure control unit hydraulic pressure of the test target device A first auxiliary pressure regulating unit for supplying oil at a predetermined pressure to check leakage for the path, and branching separately from the first auxiliary pressure regulating unit at the main pressure regulating unit to check whether the test target device is normally operated or not; It characterized in that it comprises a second auxiliary pressure control unit for supplying by adjusting the pressure of the oil to a pressure less than the first auxiliary pressure control unit.

Also preferably, the solenoid valve may include a first solenoid valve connected to the first subsidiary pressure regulating unit and a second solenoid valve connected to the second subsidiary pressure regulating unit.

Also preferably, the connection supply part is provided with a first connection supply part connected to the first solenoid valve and provided with a pressure gauge, and a second connection supply part connected to the second solenoid valve and installed with a throttle valve.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the drawings.

1 and 2, the hydraulic test apparatus according to the present invention includes an oil storage tank 100 in which distribution oil is stored as a whole, a pump 110 for pumping oil in the oil storage tank 100, and a pump. Pressure regulator 120 for adjusting the pressure of the oil pumped from the 110 to a plurality of different pressure state, and a plurality of solenoid valve 130 for controlling the supply of the oil passed through the pressure regulator 120 ( 140 and the connection supply unit 150, 160 for supplying oil to the external test target device at different pressures in accordance with the operation of the solenoid valve 130, 140.

And as shown in Figure 2 is a recovery flow path 170 for recovering the oil passed through the test target device back to the oil storage tank 100 is configured, the recovery flow path 170 is a filter for purifying the oil recovered 171 is provided. All these configurations can be implemented for easy transport by mounting on a single transport trailer.

1 and 2, the pressure regulator 120 is installed on the downstream side of the pump 110 to adjust the pressure of the oil pumped by the pump 110 to an appropriate level. Function

The configuration of the pressure regulator 120 for this is composed of a main pressure regulator 121 and two auxiliary pressure regulators 122, 123. The main pressure regulating unit 121 is composed of a pressure regulating valve 121a and a pressure indicator 121b, and the pressure regulating valve 121a is connected to the recovery flow path 170 to recover the oil recovered by the pressurized pressure at the time of pressure adjustment. Recovery to the storage tank 100 is made. In this case, when the test apparatus is applied to the spindle apparatus as the test target apparatus, the proper hydraulic pressure in the main pressure adjusting unit 121 is preferably about 250K (kgf / cm 2).

In addition, a first subsidiary pressure adjusting part 122 and a second subsidiary pressure adjusting part 123 are provided on a downstream side of the main pressure adjusting part 120.

The first auxiliary pressure adjusting unit 122 controls and supplies oil at a pressure smaller than the main pressure adjusting unit 121, for example, a pressure of about 150 K (kgf / cm 2) when the device under test is a spindle device. This is used to test for oil leaks on the device under test. The configuration is a pressure regulating valve 122a.

Next, the second subsidiary pressure adjusting unit 123 is branched separately from the first subsidiary pressure adjusting unit 122, so that a pressure smaller than the first subsidiary pressure adjusting unit 122, for example, when the device under test is a spindle device, is approximately The oil is regulated and supplied at a pressure of about 25K (kgf / cm 2) and used for testing whether the device under test is normally operated. The configuration includes a pressure regulating valve 123a and a pressure indicator 123b.

And these auxiliary pressure control unit 122, 123 are all connected to the recovery flow path 170 to recover the pressurized pressure.

Next, the solenoid valves 130 and 140 include a first solenoid valve 130 connected to the first subsidiary pressure regulating unit 122 and a second solenoid valve 140 connected to the second subsidiary pressure regulating unit 123. It is. A first connection supply unit 150 is provided downstream of the first solenoid valve 130, and a second connection supply unit 160 is provided downstream of the second solenoid valve 140.

Here, each of the connection supply units 150 and 160 has a supply side connection port and a recovery side connection port respectively implemented separately, and the recovery side connection port is connected to the recovery passage 170.

In addition, pressure gauges 151 and 152 are respectively provided at the supply side connection port and the recovery side connection port of the first connection supply unit 150 among the connection supply units 150 and 160. Therefore, oil leakage can be easily visually identified by the difference between the pressure of the supplied oil and the pressure of the recovered oil.

The second connection supply unit 160 is provided with variable throttling valves 161 and 162 in the respective supply side flow paths and the recovery side flow paths. The variable throttling valves 161 and 162 supply oil of a uniform pressure to the device under test through the second connection supply unit 160 so that the normal operation of the device under test can be tested.

Hereinafter, the operating state of the hydraulic test apparatus according to the present invention configured as described above will be described.

The hydraulic test apparatus according to the present invention is used to check the oil leakage and normal operation of the device under test.

In the description of each of these operations, the first check whether the oil leakage is pumped by the pump 110 from the oil storage tank 100, the pumped oil is adjusted to the pressure set in the main pressure control unit 121 Is supplied.

Then, the oil is continuously adjusted to a pressure set to inspect the oil leakage while passing through the first subsidiary pressure regulating unit 122, and then the oil is supplied to the opening and closing operation of the first solenoid valve 130.

In addition, the oil passing through the first solenoid valve 130 supplies oil to a device in which the test is performed through a supply side connection port of the first connection supply unit 150. At this time, the supplied oil is displayed by the pressure gauge 151 installed on the supply side connection port.

Then, the oil recovered through the inside of the test device is recovered through the recovery side connection port of the first connection supply unit 150 and then finally recovered to the oil storage tank 100 via the recovery flow path 170. However, the pressure of the oil recovered at this time is displayed on the pressure gauge 152 installed on the recovery side connection port.

Therefore, when comparing and comparing the oil pressure on the supply side and the recovery side, if there is a difference over the error range, it can be confirmed that the oil is leaking somewhere in the device under test, and if it is determined that the pressure difference is within the error range, You will notice that it does not occur.

Next, the test for the normal operation state of the test target device is adjusted to a set pressure for operation while the oil passing through the main pressure adjusting unit 121 passes through the second auxiliary pressure adjusting unit 122, and then the second solenoid The oil is supplied by the opening and closing operation of the valve 140.

In addition, the oil passing through the second solenoid valve 140 supplies oil to the device under test via the supply side connection port of the second connection supply unit 160. In this case, the oil is supplied at a constant pressure set by the variable throttle valve 161. The supply of oil is performed to operate the test target device, and the oil recovered after the operation is recovered to the oil storage tank 100 through the recovery passage 170 through the variable throttle valve 162 on the recovery port side.

If the device under test does not operate normally due to the supply of such oil, the device under test can confirm that there is a problem of oil leakage and operation.

As described above, unlike the configuration of the hydraulic test apparatus according to the present invention, the hydraulic circuit may be configured by adding or modifying some components. However, if the modified hydraulic circuit basically includes the essential components of the present invention all should be considered to be included in the technical scope of the present invention.

Hydraulic test apparatus according to the present invention as described above to perform the pre-operation test process of the large hydraulic device before assembling the parts to be put into the work immediately after assembly to improve the use efficiency of the hydraulic device, In addition, by loading each component in a separate transport trailer, there is an effect to improve the test work efficiency.

Claims (4)

An oil storage tank 100 in which distribution oil is stored; A pump (110) for pumping oil in the oil storage tank (100); A pressure regulator 120 for adjusting the pressure of the oil pumped from the pump 110 to a plurality of different pressure states; A plurality of solenoid valve for controlling the supply of the oil passed through the pressure section (120); A connection supply unit supplying oil to a test target device at different pressures according to the operation of the solenoid valve; It is connected to the test target device and provided with a recovery flow path 170 for recovering the oil recovered through the test target device to the oil storage tank 100, The pressure regulator 120 is a main pressure regulator 121 for adjusting the pressure of the oil pumped from the pump 110, and branched from the main pressure regulator 121 is the main pressure regulator 121 The first auxiliary pressure control unit 122 for supplying the oil at a predetermined pressure to check the oil leakage of the hydraulic path of the test target device by adjusting the pressure of the oil passed through the; The second auxiliary pressure control branched separately from the first auxiliary pressure regulating unit 122 to adjust and supply the pressure of the oil to a pressure smaller than the first auxiliary pressure regulating unit 122 to inspect whether the test target device is normally operated. Having a part 123, The solenoid valve is composed of a first solenoid valve 130 connected to the first auxiliary pressure control unit 122, and a second solenoid valve 140 connected to the second auxiliary pressure control unit 123, The connection supply part includes a first connection supply part 150 connected to the first solenoid valve 130 and a second connection supply part 160 connected to the second solenoid valve 140. A pressure gauge 151 is provided on the supply side connection port of the first connection supply unit 150 to indicate the supply pressure of oil, and a recovery pressure of the oil is displayed on the recovery side connection port of the first connection supply unit 150. Hydraulic test device, characterized in that the pressure gauge 152 is installed. delete delete delete

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