CN220248541U - Hydraulic test valve block and hydraulic test device - Google Patents
Hydraulic test valve block and hydraulic test device Download PDFInfo
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- CN220248541U CN220248541U CN202321596574.0U CN202321596574U CN220248541U CN 220248541 U CN220248541 U CN 220248541U CN 202321596574 U CN202321596574 U CN 202321596574U CN 220248541 U CN220248541 U CN 220248541U
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- 238000012360 testing method Methods 0.000 title claims abstract description 93
- 239000003921 oil Substances 0.000 description 98
- 239000010720 hydraulic oil Substances 0.000 description 13
- 238000007789 sealing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a hydraulic test valve block and a hydraulic test device, wherein the valve block is provided with a valve body, a pipeline is arranged in the valve body, the surface of the valve body is provided with a first check valve, a second check valve, a first overflow valve, a second overflow valve, at least four pressure measuring interfaces, a first interface, a second interface, a third interface, a fourth interface and a pressure measuring instrument, a first check valve oil inlet and a first overflow valve oil outlet are connected on the first interface in parallel through the pipeline, a first check valve oil outlet and a first overflow valve oil inlet are connected on the second interface in parallel, a second check valve oil inlet and a second overflow valve oil outlet are connected on the third interface in parallel through the pipeline, at least four pressure measuring instruments are connected on the four pressure measuring interfaces respectively for measuring the pressure at the four interfaces, and the hydraulic test device comprises a hydraulic pump, a four-way reversing valve and the hydraulic test valve block.
Description
Technical Field
The utility model relates to the technical field of hydraulic testing, in particular to a hydraulic testing valve block and a hydraulic testing device.
Background
The sealing performance of the product is one of important performance indexes for measuring the hydraulic product with two hydraulic oil port structures, for example, the sealing of the oil cylinder product mainly depends on the contact fit between a sealing element and the surface of a material, the sealing is realized by the deformation of the sealing element, and the service life of the oil cylinder sealing element determines the service life of the oil cylinder product.
At present, the test of products such as an oil cylinder generally depends on the direct driving of the oil cylinder by pressure oil to perform direct idle running test, namely, two oil ports of the oil cylinder are always connected with a hydraulic oil power source at the oil inlet end, and the oil return end is directly connected with an oil tank to perform the test. Under no-load operation test, the oil return end is directly connected with the oil tank, the abrasion efficiency of the oil cylinder sealing member is very low, the expected test effect of verifying the performance of the product sealing member can not be achieved, and the test of the service life of the oil cylinder is affected.
When the hydraulic cylinder test is carried out by means of a hydraulic system, the hydraulic system is generally provided with a three-position four-way reversing valve at the front end connected with the hydraulic cylinder. In the current test technical conditions, if the pressure needs to be increased in the oil return of a hydraulic cylinder test pipeline, a pressure valve (the pressure valve can be an overflow valve or a fixed-value one-way valve and the like) needs to be added in a T-port pipeline of a three-position four-way reversing valve, and the oil return resistance is improved through the action of the pressure valve (a test schematic diagram is shown in figure 1). The three-position four-way reversing valve is of a slide valve structure, the working pressure of a T oil port of the three-position four-way valve is low, a pressure valve is added at the T port position, the T port pressure of the three-position four-way valve can be increased, the reversing action of the three-position four-way valve is influenced by the increase of the T port pressure, the service life of a testing device is prolonged, and the testing effect of a product is influenced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the hydraulic test valve block and the hydraulic test device, which improve the test effect and do not influence the service life of a test product.
In order to achieve the technical purpose, the adopted technical scheme is as follows: a hydraulic test valve block is provided with a valve body, a pipeline is arranged in the valve body, a first one-way valve, a second one-way valve, a first overflow valve, a second overflow valve, at least four pressure measuring interfaces, a first interface, a second interface, a third interface, a fourth interface and a pressure measuring instrument are arranged on the surface of the valve body, an oil inlet of the first one-way valve and an oil outlet of the first overflow valve are connected on the first interface in parallel through the pipeline, at least one pressure measuring interface is connected on the fourth interface in parallel through the pipeline, an oil outlet of the first one-way valve and an oil inlet of the first overflow valve are connected on the second interface in parallel through the pipeline, at least one pressure measuring interface is connected on the outside of the valve body through the pipeline after the pressure measuring interface is connected on the outside of the valve body through the pipeline.
The first overflow valve and the second overflow valve are fixedly arranged on the front side surface of the valve body.
The first overflow valve and/or the second overflow valve are/is mounted on the valve body in a threaded fit.
The first check valve and/or the second check valve are/is mounted on the valve body in a threaded fit.
At least four pressure measuring interfaces are all arranged on the top surface.
The pressure measuring instrument is a pressure gauge or a pressure sensor.
The hydraulic testing device comprises a hydraulic pump, a four-way reversing valve and a hydraulic testing valve block, wherein one end of the hydraulic pump absorbs oil from an oil tank, the other end of the hydraulic pump is connected with a P port of the three-position four-way reversing valve, an A port of the four-way reversing valve is connected with a first interface, a B port of the four-way reversing valve is connected with a third interface, a T port of the four-way reversing valve returns oil to the oil tank, a second interface is used for being communicated with an oil inlet of a testing product, and a fourth interface is used for being communicated with an oil return port of the testing product.
The utility model has the beneficial effects that:
1. the hydraulic test valve block integrates the pipeline, the one-way valve and the overflow valve to form a compact hydraulic valve block, is used between the reversing valve and the test product, solves the problem in the test process of the test product, has a definite structure, and is very convenient to install and debug; the defects of complex connection, inconvenient installation and irregular appearance of the whole test pipeline are overcome, and the weight of the tool is greatly reduced, so that the tool is suitable for more test working conditions, the reaction speed is high, and the measurement is accurate; through compact design, save the shell of various valve members, the part that exposes reduces, test pipeline reduces equally, reduces the cost of test fixture.
2. The first overflow valve and the second overflow valve are designed on the positive side, so that the overflow valve is convenient to adjust and test.
3. The first overflow valve and/or the second overflow valve, the first check valve and/or the second check valve are/is arranged on the valve body in a threaded fit manner, so that the installation and the disassembly are convenient.
4. The pressure measuring interface is arranged on the top surface, so that data observation and installation are facilitated.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic diagram of a hydraulic test valve block of the present utility model;
FIG. 3 is an A-side view of a hydraulic test valve block of the present utility model;
FIG. 4 is a B-side view of the hydraulic test valve block of the present utility model;
FIG. 5 is a C-side view of the hydraulic test valve block of the present utility model;
FIG. 6 is a schematic diagram of a hydraulic testing apparatus of the present utility model;
in the figure: 1. hydraulic pump, 2, manometer, 3, relief valve, 4, four-way reversing valve, 5, hydraulic test valve piece, 6, manometer, 7, pressure sensor, 8, test product, 9, pressure valve, 51, first overflow valve, 52, first check valve, 53, second check valve, 54, second overflow valve, 55, valve body, A1, first interface, B1, second interface, A2, third interface, B2, fourth interface.
Detailed Description
The following description of the preferred embodiments of the present utility model is given with reference to the accompanying drawings, in order to explain the technical scheme of the present utility model in detail. Here, the present utility model will be described in detail with reference to the accompanying drawings. It should be particularly noted that the preferred embodiments described herein are for illustration and explanation of the present utility model only and are not intended to limit or define the present utility model. The terms "first," "second," "third," "fourth" are used merely to distinguish similar objects and are not to be construed as a particular order or sequence, it being understood that such uses may be interchanged where appropriate.
A hydraulic test valve block is a test fixture for increasing oil return resistance of products such as a hydraulic cylinder, a hydraulic actuator, a hydraulic swing cylinder, a hydraulic motor and the like in a hydraulic loop, and is mainly applied to hydraulic product test with a two-hydraulic oil port structure. The valve block is a compact hydraulic valve block, and the maximum working pressure is as follows: 210bar, the maximum working flow is 80L/min, so as to solve the problems existing in the current hydraulic oil cylinder product testing process. The valve block can be connected with a hydraulic system and is applied to the test of hydraulic oil cylinder products, and fig. 6 is a test schematic diagram of a hydraulic test device connected with the valve block.
As shown in figure 2, a hydraulic test valve block is provided with a cuboid valve body 55, a pipeline is arranged in the valve body 55, a first one-way valve 52, a second one-way valve 53, a first overflow valve 51, a second overflow valve 54, at least four pressure measuring interfaces, a first interface A1, a second interface B1, a third interface A2, a fourth interface B2 and a pressure measuring instrument are arranged on the surface of the valve body 55, the components are connected by the pipeline, the first overflow valve 51 and the second overflow valve 54 are adjustable overflow valves, an oil inlet of the first one-way valve 52 and an oil outlet of the first overflow valve 51 are connected on the first interface A1 in parallel through the pipeline, at least one pressure measuring interface is communicated with the pipeline after the oil inlet of the first one-way valve 52 and the oil outlet of the first overflow valve 51 are connected in parallel through the pipeline, such as pressure measuring interfaces MA1 and MA2 in figure 2, the oil outlet of the first one-way valve 52 and the oil inlet of the first overflow valve 51 are connected on the second interface B1 in parallel, at least one pressure measuring interface is communicated with the pipelines after the oil outlet of the first one-way valve 52 and the oil inlet of the first overflow valve 51 are connected in parallel through pipelines, such as pressure measuring interfaces MB1 and MB2 in figure 2, the oil inlet of the second one-way valve 53 and the oil outlet of the second overflow valve 54 are connected in parallel through pipelines on a third interface A2, at least one pressure measuring interface is communicated with the pipelines after the oil inlet of the second one-way valve 53 and the oil outlet of the second overflow valve 54 are connected in parallel through pipelines, such as pressure measuring interfaces MA3 and MB4 in figure 2, the oil outlet of the second one-way valve 53 and the oil inlet of the second overflow valve 54 are connected in parallel on a fourth interface B2, at least one pressure measuring instrument arranged outside the valve body 55 is connected on at least four pressure measuring interfaces respectively, for measuring the pressure at each location point.
The first interface A1 and the second interface B1 are correspondingly connected in series, the third interface A2 and the fourth interface B2 are correspondingly connected in series, the first interface A1 and the third interface A2 are respectively connected with a hydraulic outlet and an oil return port, the second interface B1 and the fourth interface B2 are respectively connected with an oil inlet and an oil outlet of a test product, when the first interface A1 is connected with the hydraulic oil outlet, the second interface B1 is connected with an oil inlet of the test product, the third interface A2 is connected with a hydraulic oil return port, the fourth interface B2 is connected with an oil outlet of the test product, when the connection oil ports of the first interface A1 and the third interface A2 are exchanged, and the connection oil ports of the third interface B1 and the fourth interface B2 are also exchanged simultaneously.
As shown in fig. 3, 4 and 5, two check valves and two adjustable overflow valves are embedded on the valve body, namely, when the valve block is used, one surface facing a debugger is a front side surface, the top surface is a B surface, and the back surface is a C surface after the valve block is placed. The first relief valve 51 and the second relief valve 54 are fixedly arranged on the front side (a face) of the valve body 55, so that the calibration pressures of the two relief valves can be manually adjusted. The first overflow valve 51 and/or the second overflow valve 54 are/is arranged on the valve body 55 in a threaded fit manner, and the first check valve 52 and/or the second check valve 53 are/is arranged on the top surface (B surface) of the valve body 55 in a threaded fit manner, so that the components on the hydraulic test valve block can be conveniently disassembled, assembled and overhauled.
The pressure measuring instrument is a pressure gauge 6 or a pressure sensor 7, the pressure gauge can be directly used for reading, the pressure sensor can be used for data acquisition, the pressure gauge can be provided for data analysis software to use, a user can conveniently use the pressure gauge for data analysis, when the same side pressure position is provided with two pressure measuring interfaces, the pressure sensor and the pressure gauge can be respectively connected, and the connection description of relevant equipment used for reading and analyzing and carrying and the pressure sensor is the prior art and is not repeated.
The B surface is provided with a plurality of pressure measuring interfaces, the number of the pressure measuring interfaces is at least 4, as shown in fig. 4, the pressure measuring interfaces with the number of 8 are distributed on the B surface of the hydraulic test valve block, and the pressure measuring points are on the same B surface, so that the connection and the disassembly of pressure measuring elements such as a pressure gauge or a pressure sensor are convenient, and the measurement and the reading are convenient. The pressure measuring interfaces MA1 and MA2 are positioned at positions of inlet oil of the first one-way valve and an oil outlet of the first overflow valve, MA1 and MA2 detect oil outlet pressure of the first overflow valve, pressure measuring interfaces MB1 and MB2 are positioned at positions of the oil outlet of the first one-way valve and an oil inlet of the first overflow valve, MB1 and MB2 detect oil inlet pressure of the first overflow valve, pressure measuring interfaces MB3 and MB4 are positioned at positions behind the second one-way valve and in front of the second overflow valve, MB3 and MB4 detect oil inlet pressure of the second overflow valve, and measuring interfaces MA3 and MA4 are positioned at positions behind the second one-way valve and behind the second overflow valve, and MA3 and MA4 detect oil outlet pressure of the second overflow valve. The maximum test flow of the valve block design is 80L/min, the test working conditions under different flow states can be covered, the number of the test valve blocks is reduced, and the cost is saved.
The hydraulic test valve block has definite structure and is very convenient to install and debug; the defects of complex connection, inconvenient installation and irregular appearance of the whole test pipeline are overcome, and the weight of the tool is greatly reduced, so that the tool is suitable for more test working conditions, the reaction speed is high, and the measurement is accurate; through compact design, save the shell of various valve members, the part that exposes reduces, test pipeline reduces equally, reduces the cost of test fixture.
The hydraulic testing device comprises a hydraulic pump 1, a four-way reversing valve 4 and a hydraulic testing valve block 5, wherein one end of the hydraulic pump 1 absorbs oil from an oil tank, the other end of the hydraulic pump is connected with a P port of the four-way reversing valve 4, an A port of the four-way reversing valve 4 is connected with a first port A1, a B port of the four-way reversing valve is connected with a third port A2, a T port of the four-way reversing valve returns oil to the oil tank, the second port B1 is communicated with an oil inlet of a testing product 8, and a fourth port of the four-way reversing valve is communicated with an oil return port of the testing product 8. The four-way reversing valve 4 can be a two-position four-way reversing valve or a three-position four-way reversing valve.
Taking a test oil cylinder and a three-position four-way reversing valve as an example, as shown in fig. 6, the valve block using method comprises the following steps:
the first interface A1 and the third interface A2 are connected with an opening A and an opening B of the three-position four-way reversing valve, and the second interface B1 and the fourth interface B2 are connected with two oil ports of the oil cylinder.
When hydraulic oil enters the valve block from the first interface A1 and enters the hydraulic oil cylinder from the second interface B1 through the first one-way valve 52, hydraulic oil in the oil cylinder enters the valve block from the fourth interface B2 and returns to the oil tank through the second overflow valve 54, the oil return pressure can be established in the pipeline loop through adjusting the second overflow valve 54, and the effect of the pressed test is achieved.
When hydraulic oil enters the valve block from the third interface A2 and enters the hydraulic oil cylinder from the fourth interface B2 through the second one-way valve 53, hydraulic oil in the oil cylinder enters the valve block from the second interface B1 and returns to the oil tank through the first overflow valve 51, and the return pressure can be established in the pipeline loop by adjusting the first overflow valve 51, so that the effect of the pressed test is achieved.
In particular, because the three-position four-way valve is reversing, the middle of the oil cylinder is also in a piston form, and the inlet and the outlet are opposite in the period.
1. When the second interface B1 is connected with the oil inlet of the test oil cylinder, the fourth interface B2 is connected with the oil outlet of the test oil cylinder. The test oil way enters from the first interface A1 and flows out from the third interface A2, the pressure measuring instruments arranged on the pressure measuring interfaces MB1 and MB2 can measure and obtain the oil inlet pressure of the oil cylinder, the pressure measuring interfaces MB3 and MB4 can measure and obtain the oil outlet pressure of the oil cylinder (the oil outlet pressure is regulated and controlled by the pressure of the second overflow valve 54, so to speak, the pressure measuring interfaces MB3 and MB4 are used for regulating the pressure of the second overflow valve), and the pressure measuring interfaces MA3 and MA4 can measure and obtain the oil outlet pressure of the second overflow valve (so to speak, the oil return resistance of a section directly connected with the oil tank pipeline).
2. When the second interface B1 is connected with the oil outlet of the test oil cylinder, the fourth interface B2 is connected with the oil inlet of the test oil cylinder. The test oil way enters from the third interface A2, flows out from the first interface A1, pressure measuring instruments arranged on pressure measuring interfaces MB3 and MB4 can measure and obtain the oil inlet pressure of the oil cylinder, pressure measuring interfaces MB1 and MB2 can measure and obtain the oil outlet pressure of the oil cylinder (the oil outlet pressure is regulated and controlled by the pressure of the first overflow valve 51, so to speak, the pressure measuring interfaces MB1 and MB2 are used for regulating the pressure of the first overflow valve), and pressure measuring interfaces MA1 and MA2 can measure and obtain the outlet pressure of the first overflow valve (so to speak, the oil return resistance of a section of the oil tank pipe is directly connected).
The foregoing is merely a preferred example of the present utility model and is not intended to limit or define the utility model. Various modifications and alterations of this utility model will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the scope of protection claimed in the present utility model.
Claims (7)
1. A hydraulic test valve block, characterized by: the valve body (55) is arranged, a pipeline is arranged in the valve body (55), a first one-way valve (52), a second one-way valve (53), a first overflow valve (51), a second overflow valve (54), at least four pressure measuring interfaces, a first interface (A1), a second interface (B1), a third interface (A2), a fourth interface (B2) and a pressure measuring instrument are arranged on the surface of the valve body (55), an oil inlet of the first one-way valve (52) and an oil outlet of the first overflow valve (51) are connected on the first interface (A1) in parallel through the pipeline, at least one pressure measuring interface is communicated with the pipeline after the oil inlet of the first one-way valve (52) and the oil outlet of the first overflow valve (51) are connected on the second interface (B1) in parallel, at least one pressure measuring interface is communicated with the pipeline after the oil inlet of the second one-way valve (53) and the oil outlet of the first one-way valve (52) are connected on the pipeline after the oil inlet of the second one-way valve (53) and the oil outlet of the second one-way valve (54) are connected on the second interface (54) through the pipeline after the oil inlet of the second one-way valve (52) and the oil outlet of the second one-way valve (51) are connected on the pipeline after the second one-way valve (54) and the oil outlet of the second one way valve (53) and the oil outlet of the second one-way valve (53) are connected on the second one way valve (2) and the one way valve, at least one pressure measuring interface is communicated with the pipeline after the oil outlet of the second one-way valve (53) and the oil inlet of the first overflow valve (51) are connected in parallel through a pipeline, and at least four pressure measuring interfaces are respectively connected with a pressure measuring instrument arranged on the outer side of the valve body (55).
2. A hydraulic test valve block as defined in claim 1, wherein: the first overflow valve (51) and the second overflow valve (54) are fixedly arranged on the front side surface of the valve body (55).
3. A hydraulic test valve block as claimed in claim 1 or claim 2, wherein: the first overflow valve (51) and/or the second overflow valve (54) are/is arranged on the valve body (55) in a threaded fit manner.
4. A hydraulic test valve block as claimed in claim 1 or claim 2, wherein: the first check valve (52) and/or the second check valve (53) are/is arranged on the valve body (55) in a threaded fit manner.
5. A hydraulic test valve block as defined in claim 1, wherein: at least four pressure measuring interfaces are all arranged on the top surface.
6. A hydraulic test valve block as defined in claim 1, wherein: the pressure measuring instrument is a pressure gauge (6) or a pressure sensor (7).
7. A hydraulic testing device, characterized in that: the hydraulic test valve comprises a hydraulic pump (1), a four-way reversing valve (4) and the hydraulic test valve block (5) according to any one of claims 1-6, wherein one end of the hydraulic pump (1) absorbs oil from an oil tank, the other end of the hydraulic pump is connected with a P port of the four-way reversing valve (4), an A port of the four-way reversing valve (4) is connected with a first port (A1), a B port of the four-way reversing valve is connected with a third port (A2), a T port of the four-way reversing valve returns oil to the oil tank, the second port (B1) is used for being communicated with an oil inlet of a test product (8), and the fourth port is used for being communicated with an oil return port of the test product (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321596574.0U CN220248541U (en) | 2023-06-21 | 2023-06-21 | Hydraulic test valve block and hydraulic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321596574.0U CN220248541U (en) | 2023-06-21 | 2023-06-21 | Hydraulic test valve block and hydraulic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248541U true CN220248541U (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321596574.0U Active CN220248541U (en) | 2023-06-21 | 2023-06-21 | Hydraulic test valve block and hydraulic test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248541U (en) |
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2023
- 2023-06-21 CN CN202321596574.0U patent/CN220248541U/en active Active
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