KR20130132014A - Test apparatus for hydraulic machinery - Google Patents

Abstract

The present invention relates to a device for testing a hydraulic device. A work plate (12) is positioned on the upper part of a base (10). A detection actuator (32) is positioned on the work plate (12) to determine the normal operation of various hydraulic devices (260, 270, 280, 290) by using hydraulic pressure which is provided by a hydraulic providing unit (14). A plurality of mounting plates (26, 27, 28, 29) is positioned on the work plate (12). The hydraulic devices are mounted corresponding to each mounting plate. A pressure setting unit (20) is positioned on the base (10). A support actuator (36) is positioned on the base (10) to support a connection load (35) which is protruded to the outside of the detection actuator (32). A support load (38) supports the connection load (35). The present invention easily and accurately tests various hydraulic devices and determines the normal operation.

Description

Test apparatus for hydraulic machinery

The present invention relates to a hydraulic apparatus test apparatus, and more particularly, to a hydraulic apparatus test apparatus that can individually test the performance of the hydraulic apparatus used in industrial facilities and the like.

There are various types of hydraulic equipment used in industrial facilities such as proportional control valves, on / off valves and bypass equipment. Such hydraulic equipment should be checked for performance after a certain period of time. That is, after disassembly and cleaning after a period of use, replace consumables that need to be replaced periodically. However, in this process, it is difficult to visually determine the mechanical deterioration state, and by setting a vague replacement cycle, maintenance of the hydraulic equipment.

However, when the hydraulic equipment is reassembled after disassembly and cleaning due to mechanical deterioration or tolerance in the assembling process, it may not be possible to exhibit proper performance.

Due to such a problem, when the hydraulic equipment used in the industrial facility is maintained and then mounted in the industrial facility again, the hydraulic device does not operate properly, and thus the industrial facility does not operate.

In the prior art document presented below, there is a device for inspecting a hydraulic cylinder, but for other hydraulic devices, for example, a proportional control valve, an on-off valve, a bypass device, etc. There is no check on the mechanical deterioration of hydraulic equipment based on the operator's experience. Therefore, the inexperienced worker is not able to accurately determine the degree of deterioration of the hydraulic equipment is a big problem that the old equipment is used in the scoop-up facility, the entire facility does not operate properly.

Korean Patent No. 10-916915

Hydraulic apparatus test apparatus according to the present invention is intended to be able to test the hydraulic equipment in a state as in the actual use state.

Another object of the present invention is to provide a test apparatus capable of selectively testing various kinds of hydraulic equipment.

Still another object of the present invention is to selectively block the flow path of each hydraulic device that is not selected in the selective testing of various types of hydraulic devices.

According to a feature of the present invention for achieving the object as described above, the present invention provides a base having a working plate, a hydraulic pressure supply unit for supplying pressurized oil mounted on or separate from the base, and the hydraulic agent Pressure setting unit for making and supplying the pressure provided in the study according to the hydraulic equipment to be tested, and the piston installed on the working plate and the cylinder in the cylinder space inside the cylinder is moved by the pressure difference in the cylinder space to project out of the cylinder A detection actuator to move the connected rod, at least one mounting plate to which the cylinder space divided by the piston in the detection actuator and the inlet and outlet ports are connected, and a support rod for supporting the connection rod of the detection actuator. The connecting rod of the detection actuator by the hydraulic pressure provided from the hydraulic pressure supply unit And a support actuator that supports and has a force less than that of the detection actuator.

The mounting plate is provided with a port for communicating with the hydraulic device, the port is connected to both sides of the cylinder space of the detection actuator through the first and second flow path, the first flow path and the first flow path and the first flow path Double valves are installed to open and close two channels simultaneously.

The double valve includes two valve operation portions for opening and closing the first flow passage and the second flow passage, respectively, and an operation lever for opening and closing the valve operation portion at the same time.

The double valve further includes a cover that shields portions of the first flow path and the second flow path in which the valve operation part is installed.

The connecting rod and the supporting rod are not coupled to each other, and the supporting rod supports the connecting rod.

A connection plate for connecting a flow path between the mounting plate and the hydraulic device may be further used between the hydraulic device and the mounting plate.

In the hydraulic apparatus test apparatus according to the present invention, the following effects can be obtained.

First, the hydraulic equipment test apparatus of the present invention is to be able to test the hydraulic equipment under the same conditions as the actual environment in a state in which the hydraulic equipment is separated from the system or equipment used.

In the present invention, since it is possible to selectively test various types of hydraulic equipment in one test apparatus, it is possible to test the hydraulic equipments simply by placing the test apparatus in the field, so that the system or equipment in which the hydraulic equipment is used is stable. Can be enabled.

In the present invention, it is possible to block the flow path for the test of one hydraulic equipment at a time, it is possible to prevent the hydraulic pressure is discharged through the mounting plate equipped with the hydraulic equipment that is not inadvertently tested, malfunction of the test apparatus There is an effect that can prevent.

1 is a perspective view showing the configuration of a preferred embodiment of a hydraulic apparatus test apparatus according to the present invention.
2 is a perspective view showing a configuration of a main part of an embodiment of the present invention.
3 is a circuit diagram showing a hydraulic circuit configuration of an embodiment of the present invention.
Figure 4 is a perspective view showing the main portion of the embodiment of the present invention.
5 is a perspective view showing the configuration of a double ball valve constituting an embodiment of the present invention.
Figure 6 is an exploded perspective view showing that the hydraulic device is mounted on the mounting plate in the embodiment of the present invention.

Hereinafter, a preferred embodiment of a hydraulic apparatus test apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figures, the base 10 forms the skeleton of the test apparatus. The base 10 is in the form of a desk in this embodiment, but can be made in various shapes, the work plate 12 is mounted on the top. The working plate 12 has a plate shape having a predetermined area, and may have a rectangular shape or various shapes in this embodiment.

An oil pressure providing unit 14 is installed to be provided inside or separately of the base 10. The hydraulic pressure providing unit 14 may be located under the work plate 12 of the base 10 or the base 10 is made separately. The oil pressure providing unit 14 serves to provide oil pressure for the test, as shown in FIG. 1, by pressurizing oil in the hydraulic tank 16 and the hydraulic tank 16 in which oil is stored. There is a pump 18 to deliver. And accumulate 19 is provided so that the oil pressurized by the pump 18 can be supplied at a constant pressure.

The oil provided from the hydraulic pressure providing unit 14 is delivered to the pressure setting unit 20. The pressure transmission unit 20 is provided on one side of the base 10. The pressure transmission unit 20 is composed of a pressure reducing valve 22 and a safety valve 24 serves to provide an oil having a pressure suitable for the hydraulic device under test.

A plurality of mounting plates 26, 27, 28, and 29 are installed on the working plate 12. These mounting plates 26, 27, 28, and 29 are a first mounting plate 26, a second mounting plate 27, a third mounting plate 28 and a fourth mounting plate 29, respectively. These mounting plates 26, 27, 28, and 29 are mounted with first to fourth hydraulic devices 260, 270, 280 and 290, respectively. In this embodiment, a total of four mounting plates 26, 27, 28, 29 are used, but this is not necessary.

The mounting plates 26, 27, 28, and 29 are each formed with two ports. Referring to the example shown in FIG. 6, the first mounting plate 26 has ports 26 ', 26 "at predetermined intervals. ) Are formed. The ports 26 'and 26 " serve as inlet and outlet ports for the hydraulic pressure to enter and exit. The distance between the ports 26 ', 26 "may vary depending on the type of hydraulic equipment.

In the present embodiment, the first mounting plate 26 is a portion in which the first hydraulic device 260 such as a proportional control valve is mounted. As is well known, each of the hydraulic equipment may be used separately one by one, two or more may be used in combination with each other as shown in FIG. In other words, the hydraulic unit combined with two units to perform a specific function.

The second mounting plate 27 is equipped with a second hydraulic device 270 such as an on-off valve, and is tested. The third mounting plate 28 is equipped with a third hydraulic device 280 such as a bypass device. The fourth mounting plate 29 is mounted and tested with a fourth hydraulic device 290 serving as a safety bypass for the on-off valve.

Meanwhile, for example, a connection plate 270 ′ may be installed between the second mounting plate 27 and the second hydraulic device 270. The connection plate 270 'serves as a kind of adapter, and serves to mount another hydraulic device that does not match the flow path to the mounting plates 26, 27, 28 and 29.

The detection actuator 30 is installed on the working plate 12. When the hydraulic actuator is tested using the hydraulic pressure provided by the hydraulic pressure providing unit 14, the detection actuator 30 is operated when the hydraulic apparatus is in a normal state. That is, the detection actuator 30 is provided with a piston 34 in a cylinder 32 in which a cylinder space 33 is formed. The piston 34 divides the cylinder space 33 into two. A connecting rod 35 is connected to the piston 34 to protrude out of the cylinder 32. Checking the movement of the connecting rod 35 can detect whether the hydraulic equipment is normal. That is, when the hydraulic device is normal, when the hydraulic pressure enters one side of the detection actuator 32, that is, the cylinder space 33 partitioned by the piston 34, the piston 34 is the opposite cylinder space 33. While moving to, to move the connecting rod 35.

On the other hand, the base 10 corresponding to the lower portion of the working plate 12 is provided with a support actuator 36. The support actuator 36 is configured to move the piston 37 therein, the support rod 38 connected to the piston 37 to the outside of the support actuator 36 on one side protrudes the connection rod 35 ). The support rod 38 is not connected to the connection rod 35, but the connection rod 36 may be seated on the support rod 38. Therefore, when the connecting rod 36 is raised to the upper side based on the drawing, the connecting rod 36 does not pull the support rod 38 together. However, when the connecting rod 36 moves downward based on the drawing, the support rod 38 is pressed.

The force of the support actuator 36 is less than the force of the detection actuator 32. Accordingly, the support rod 38 may not directly move the connection rod 35 of the detection actuator 32, and the connection rod 35 may move the support rod 38 by pushing the support rod 38.

In the present invention, the support actuator 36 always maintains the support rod 38 to protrude to the outside of the support actuator 36 by the oil pressure provided from the oil pressure providing unit 14.

On the other hand, a configuration for hydraulic transmission with the hydraulic pressure providing unit 14 will be described. One side of the base 10 is provided with a drive source connecting portion 40, is connected via the pressure setting unit 20 and the supply pipe 42, and also through the hose (not shown) with the hydraulic providing unit 14, etc. Is connected to supply the hydraulic pressure to the pressure setting unit 20.

And, one side of the base 10 is provided with a tank return unit 44. The tank return unit 44 serves to return oil, which has passed the hydraulic device under test from the detection actuator 32, to the hydraulic tank 16, and is connected to the hydraulic tank 16 through a hose or the like. do.

In addition, the base 10 is provided with a drain portion 46 adjacent to the tank return portion 44. The drain 46 removes oil remaining in the hydraulic device during proportional control, and is connected to the hydraulic tank 16 through a hose or the like.

On the other hand, the first hydraulic device 260 mounted on the first mounting plate 26 is connected through the pressure setting unit 20 and the supply pipe 47. The supply pipe 47 may be made of a flexible material. An operation valve 47 'is provided at the inlet side of the supply pipe 47 to control the supply of oil to the supply pipe 47. The operation valve 47 'is provided with a lever (not shown) to perform the opening and closing operation.

The tank return unit 44 and the first hydraulic device 260 are connected through a return pipe 48, and the return pipe 48 may also be made of a flexible material.

The drain 46 and the first hydraulic device 260 are connected through a drain pipe 49. The drain pipe 49 may also be made of a flexible material. Here, the supply pipe 47, the return pipe 48 and the drain pipe 49 is a hydraulic device mounted on the second mounting plate 27, the third mounting plate 28 and the fourth mounting plate 29. And optionally connected to and to enable testing of the corresponding hydraulic equipment. When the supply pipe 47, the return pipe 48 and the drain pipe 49 are not connected to the hydraulic device for the test, in the case of the supply pipe 47, the operation valve 47 'is closed so that the hydraulic pressure does not leak. The return pipe 48 and the drain pipe 49 are equipped with a kind of plug plug at their ends to prevent leakage.

The configuration for transferring oil between the detection actuator 32 and the respective mounting plates 26, 27, 28, and 29 will be described. First, each of the first mounting plate 26 and the detection actuator 32 is partitioned by the piston 34 of the detection actuator 32 through the first flow passage 261 and the second flow passage 262. It is connected to the cylinder space 33. In this embodiment, the oil enters the one cylinder space 33 through the first passage 261, and the oil in the other cylinder space 33 is moved through the second passage 262.

Meanwhile, a first double valve 264 is installed to open and close the first flow path 261 and the second flow path 262. As shown in FIG. 5, the first double valve 264 is covered by the cover 265, and two valve operating portions 267 therein are provided with one operation lever 266. It is configured to be operated by. That is, both sides of the operation lever 266 enter the two valve operation units 267 to allow the valve operation unit 267 to open and close according to the position of the operation lever 266. Here, each valve operation unit 267 is installed in the first passage 261 and the second passage 262 to open and close.

Next, the second mounting plate 27 and the detection actuator 32 are connected through a first flow passage 271 and a second flow passage 272, and the first mounting plate 26 is located on the detection actuator 32 side. In the same position as A second double valve 274 is also installed in the first flow path 271 and the second flow path 272 for connecting the second mounting plate 27 to the detection actuator 32. The configuration is the same as that of the first double valve 264.

The third mounting plate 28 and the detection actuator 32 are also connected through a first flow path 281 and a second flow path 282, wherein the first flow path 281 and the second flow path 282 are connected to each other. It is connected to each of the different cylinder space 33 is partitioned by the piston 34 of the detection actuator 32. Here, a third double valve 284 is installed in the first flow path 281 and the second flow path 282 to control the movement of oil.

The fourth mounting plate 29 and the detection actuator 32 are also connected in the same manner through the first channel 291 and the second channel 292. Here, the fourth double valve 294 is installed in the first flow path 291 and the second flow path 292 to control the movement of oil. For reference, the configuration of the second, third, and fourth double valves 274, 284, and 294 is the same as that of the first double valve 264, and thus description thereof is omitted.

Reference numeral 50 shown in FIG. 1 is a power supply for supplying power to, for example, a solenoid of the third hydraulic device 280.

It will be described below using the hydraulic apparatus testing apparatus according to the present invention having the configuration as described above.

First, it will be described to test by mounting the first hydraulic device (260, 26 ') on the first mounting plate (26). In this case, the test is performed with the second, third and fourth double valves 274, 284 and 294 all closed. That is, only the first double valve 264 is opened and the supply pipe 47, the return pipe 48, and the drain pipe 49 are connected to the ports of the first hydraulic device 260 ′, respectively. It is a state.

In this state, the oil provided from the hydraulic pressure supply unit 14 passes through the pressure setting unit 20 through the drive source connection unit 40 and the supply pipe 42 to the first hydraulic device 260 and 260 '. A suitable pressure is transmitted to the first hydraulic equipment 260, 260 'through the supply pipe 47. The oil delivered to the first hydraulic device 260, 260 ′ is delivered to the cylinder space 33 of one side of the detection actuator 32 through the first flow path 261, so that the piston 34 is transferred to the cylinder 32. Will move within. Of course, the oil is discharged from the opposite cylinder space 33 is transferred to the first hydraulic device 260, 260 'through the second flow path 262 and returned to the hydraulic tank 16 through the return pipe 48.

In addition, since the first hydraulic devices 260 and 260 'are generally capable of proportional control, the piston 34 may stand at a specific position in the middle of the cylinder 32 without being completely moved.

Thus, the hydraulic pressure is supplied from the hydraulic providing unit 14 in the state where the first hydraulic equipment 260, 260 'is mounted on the first mounting plate 26, so that the connecting rod 35 of the detection actuator 32 is moved. Checking the degree to which it can be confirmed whether the normal operation of the first hydraulic equipment (260 260 ′).

Next, it is described that the second hydraulic device 270 is mounted and inspected on the second mounting plate 27. At this time, the test is performed with the first, third and fourth double valves 264, 284 and 294 all closed. That is, only the second double valve 274 is opened to open the first flow path 271 and the second flow path 272 connecting the second mounting plate 27 and the detection actuator 32 to each other. A plurality of second hydraulic devices 270 mounted on the second mounting plate 27 may also be stacked and used. The second hydraulic device 270 performs on-off control. Thus, the supply pipe 47 and the return pipe 48 are respectively connected to the corresponding ports of the second hydraulic device 270. In this state, when the oil is supplied by operating the lever of the operation valve 47 ', when the second hydraulic device 270 operates normally, the connecting rod 35 of the detection actuator 32 is moved in one direction. .

On the other hand, the inspection by mounting the third hydraulic device 280 to the third mounting plate (28). In this case, the test is performed with all of the first, second and fourth double valves 264, 274 and 294 closed. Accordingly, the first and second flow paths 281 and 282 are opened by the third double valve 284. The third hydraulic device 280 performs a bypass function, and the supply pipe 47 or the return pipe 48 is not connected. That is, there is a solenoid for performing the bypass function in the third hydraulic device 280, and when electricity is supplied, it is excited and closes the flow path.

Therefore, when the third hydraulic device 280 operates normally, when the electric power is not supplied, the solenoid element is demagnetized, and the oil in the cylinder space 33 may flow while the flow path is opened, so that the support actuator 36 By the operation of the support rod 38 pushes the connection rod 35 while the detection actuator 32 is operated. In this case, it can be seen that the operation of the third hydraulic device 280 is normally performed.

Next, the fourth hydraulic device 290 is mounted on the fourth mounting plate 29 and tested. In this case, the supply pipe 47 and the return pipe 48 are connected to the fourth hydraulic device 290 to supply oil while all of the first and second double valves 264, 274, and 284 are closed. In this case, if the fourth hydraulic device 290 is normal, the oil provided through the supply pipe 47 is connected to the fourth hydraulic device 290, the fourth mounting plate 29, and the first flow path 291. It is transmitted to the cylinder space 33 in the upper portion of the detection actuator 32 through the connecting rod 35 to move downward. As such, when the connection rod 35 is lowered, the fourth hydraulic device 290 is normally operated.

The scope of the present invention is not limited to the embodiments described above, but may be defined by the scope of the claims, and those skilled in the art may make various modifications and alterations within the scope of the claims It is self-evident.

For example, in the illustrated embodiment, the first to fourth mounting plates 26, 27, 28, and 29 are provided to test various types of hydraulic equipment, respectively. For example, any one mounting plate may be used. Test apparatus may also be made for hydraulic equipment which can be mounted and tested at (26, 27, 28, 29).

For example, only the support actuator 36 and the third and fourth mounting plates 28 and 29 may be provided to test the third hydraulic device and the fourth hydraulic device, or the first or second mounting plate. The test apparatus may be configured to test only hydraulic equipment which can be tested by (26,27).

10: base 12: working board
14: hydraulic supply unit 16: hydraulic tank
18: Pump 19: Accumulator
20: pressure setting section 22: pressure reducing valve
24: Safety valve 26: First mounting plate
27: 2nd mounting plate 28: 3rd mounting plate
29: fourth mounting plate 30: detection actuator
32: cylinder 33: cylinder space
34: piston 35: connecting rod
36: support actuator 37: piston
38: support rod 40: drive source connection
42: supply pipe 44: tank return unit
46: drain 47: supply pipe
48: return pipe 49: drain pipe
260: first hydraulic equipment 261: first euro
262: second euro 264: first double valve
265: cover 266: operation lever
267: valve operation portion 270: second hydraulic equipment
271 Euro 1 272 Euro 2
274: second double valve 280: third hydraulic equipment
281: first euro 282: second euro
284: third double valve 290: fourth hydraulic equipment
291 Euro 192 Euro 292
294: fourth double valve

Claims (6)

A base having a working plate,
A hydraulic provision unit for supplying pressurized oil mounted on the base or separately installed;
A pressure setting unit for making and supplying the pressure provided from the oil pressure providing unit according to the hydraulic device to be tested;
A detection actuator installed on the work plate to move the piston in the cylinder space inside the cylinder by the pressure difference of the cylinder space to move the connecting rod protruding out of the cylinder;
At least one mounting plate to which the cylinder space divided by the piston and the inlet and outlet ports of the detection actuator are connected;
And a support rod supporting the connection rod of the detection actuator to support the connection rod of the detection actuator by the hydraulic pressure provided from the oil pressure providing unit, and having a force lower than that of the detection actuator.
According to claim 1, wherein the mounting plate is provided with a port for communicating with the hydraulic device, the port is connected to both sides of the cylinder space of the detection actuator through the first and second flow path, the first and second flow path The hydraulic device test apparatus is installed in the double valve so that the first flow path and the second flow path at the same time.
3. The apparatus of claim 2, wherein the double valve includes two valve operation portions for opening and closing the first flow passage and the second flow passage, and an operation lever for opening and closing the valve operation portion at the same time.
4. The apparatus of claim 3, wherein the double valve further includes a cover for shielding portions of the first flow path and the second flow path in which the valve operation part is installed.
According to claim 1, wherein the connecting rod and the supporting rod is not connected to each other, the hydraulic equipment test apparatus for supporting the connecting rod.
The apparatus of claim 1, wherein a connection plate for connecting a flow path between the mounting plate and the hydraulic apparatus may be further used between the hydraulic apparatus and the mounting plate. 7.

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