CN109595221B - Testing device and testing method for constant-power valve - Google Patents
Testing device and testing method for constant-power valve Download PDFInfo
- Publication number
- CN109595221B CN109595221B CN201910086953.7A CN201910086953A CN109595221B CN 109595221 B CN109595221 B CN 109595221B CN 201910086953 A CN201910086953 A CN 201910086953A CN 109595221 B CN109595221 B CN 109595221B
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- oil
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- constant power
- piston
- power valve
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 239000003921 oil Substances 0.000 claims description 80
- 239000010720 hydraulic oil Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a testing device of a constant-power valve, which comprises a valve block (1), a swing rod (2), a plug (3) and a piston push rod (4), wherein a step hole (5) and a channel (6) are formed in the front side of the valve block (1), the step hole (5) is perpendicular to the channel (6), a sliding sleeve (7) is fixedly arranged in a small hole of the step hole (5), a left end cover (8) and a right end cover (9) are fixedly arranged in the sliding sleeve (7) and positioned at two ends of the sliding sleeve respectively, a piston (11) capable of sliding along the sliding sleeve (7) is fixedly arranged on the piston push rod (4), the piston (11) and the left end cover (8) form an oil return cavity, and the piston (11) and the right end cover (9) form an oil inlet cavity; a constant power valve (12) is arranged on the left side of the valve block (1); it also discloses a side test method. The beneficial effects of the invention are as follows: compact structure, simple and convenient test, reduced test cost, low test energy consumption and simple operation.
Description
Technical Field
The invention relates to the technical field of performance test of constant power valves, in particular to a testing device and a testing method of a constant power valve.
Background
Constant power valves are an important component in hydraulic systems. The current constant power valve is arranged on the hydraulic pump to test the regulating performance of the constant power valve, the hydraulic pump consumes great power during testing, the constant power valve can be tested, the testing time and the testing energy are great, and the constant power valve and the hydraulic pump are complex to install due to the fact that the constant power valve and the hydraulic pump are arranged, and the constant power valve and the hydraulic pump occupy the site integrally. The valve core of the constant power valve is manually shifted to test the constant power valve so as to ensure that the output pressure of the constant power valve is 10bar, but the manual shifting of the valve core of the constant power valve increases the labor intensity of workers, further increases the testing difficulty and causes high testing cost. Therefore, there is a need for a simple test, low test cost, and low test energy consumption.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the testing device and the testing method for the constant-power valve, which have the advantages of compact structure, simple and convenient testing, low testing cost, low testing energy consumption and simple operation.
The aim of the invention is achieved by the following technical scheme: the utility model provides a testing arrangement of constant power valve, it includes valve piece, pendulum rod, jam and piston push rod, step hole and passageway have been seted up to the front side of valve piece, step hole perpendicular to passageway sets up, the internal thread has been seted up in the macropore of step hole, the sliding sleeve has been set firmly in the aperture of step hole, and be located in the sliding sleeve and both ends have set firmly left end cover and right end cover respectively, set up the guiding hole in left end cover and the right end cover, slidable mounting has the piston push rod between two guiding holes, set firmly the piston that can follow the sliding sleeve on the piston push rod, piston and left end cover form the oil return chamber, piston and right end cover form the oil inlet chamber; the left side of valve piece is provided with the constant power valve, and the case of constant power valve stretches into in the passageway, is provided with the pendulum rod along its axial in the passageway, and the top of pendulum rod has set firmly the round pin axle, and the round pin axle rotation is installed at valve piece top, and the one end of pendulum rod sets up with the case is relative, and the other end of pendulum rod sets up with the piston push rod is relative, the oil inlet has still been seted up at the top of valve piece, and the oil inlet communicates through oil circuit hole A with the oil feed chamber, is connected with the oil feed manometer on the oil circuit hole A, and the oil return opening has been seted up to the rear side of valve piece, oil return opening and passageway intercommunication, still be provided with output oil pressure gauge on the valve piece, output oil manometer communicates with the oil return chamber through oil circuit hole B.
The sliding sleeve is propped against the shoulder of the stepped hole under the locking force of the plug and the internal thread.
The oil inlet pressure gauge is arranged at the top of the valve block.
The device is a method for testing a constant power valve, and comprises the following steps:
the method comprises the steps that S1, hydraulic oil is pumped into an oil inlet, an oil inlet pressure gauge detects the pressure P1 in an oil inlet cavity, after the hydraulic oil enters the oil inlet cavity, a piston is pushed to move towards a channel direction, hydraulic oil in an oil return cavity flows out sequentially through a channel and an oil return port, an oil outlet pressure gauge detects the pressure P2 in the oil return cavity, meanwhile, the piston drives a piston push rod to push one end of a swing rod, the swing rod swings around a pin shaft, then the other end of the swing rod pushes a valve core of a constant power valve, and therefore the constant power valve is adjusted, and the constant power valve is ensured to output pressure oil; installing a pressure gauge at an oil return port of the constant power valve, and detecting the output power of the constant power valve through the pressure gauge;
s2, slowly raising P1 to 20bar by workers until the output pressure of the constant-power valve is 10 bar;
s3, gradually lowering P1 until the P1 is displayed as 0bar, gradually raising the P1, and simultaneously recording the P1 value corresponding to each interval of 10bar from 10bar to 240bar of P2;
s4, calling back P1, and recording a corresponding P1 value when P2 displays 10bar at each interval;
s5, corresponding to each value of P2, calculating the rising and falling pressure difference of P1, and if the difference is less than or equal to 2bar, judging that the follow-up performance is qualified; if P1 is 250bar, the leakage quantity of the T port is less than or equal to 100ml, and the T port is qualified.
The invention has the following advantages: the invention has compact structure, simple and convenient test, low test cost, low test energy consumption and simple operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view of C-C of FIG. 2;
FIG. 5 is a D-D sectional view of FIG. 3;
FIG. 6 is a schematic diagram of a test of a constant power valve;
in the figure, a valve block, a 2-swing rod, a 3-plug, a 4-piston push rod, a 5-stepped hole, a 6-channel, a 7-sliding sleeve, an 8-left end cover, a 9-right end cover, an 11-piston, a 12-constant power valve, a 13-valve core, a 14-pin shaft, a 15-oil inlet, a 16-oil path hole A, a 17-oil inlet pressure gauge, a 18-oil return port, a 19-output oil pressure gauge and a 20-oil path hole B are arranged.
Detailed Description
The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:
as shown in fig. 1-6, a testing device of a constant power valve comprises a valve block 1, a swing rod 2, a plug 3 and a piston push rod 4, wherein a step hole 5 and a channel 6 are formed in the front side of the valve block 1, the step hole 5 is perpendicular to the channel 6, internal threads are formed in a large hole of the step hole 5, a sliding sleeve 7 is fixedly arranged in a small hole of the step hole 5, a left end cover 8 and a right end cover 9 are respectively and fixedly arranged in the sliding sleeve 7 at two ends of the sliding sleeve, guide holes are formed in the left end cover 8 and the right end cover 9, the piston push rod 4 is slidably arranged between the two guide holes, a piston 11 capable of sliding along the sliding sleeve 7 is fixedly arranged on the piston push rod 4, a return oil cavity is formed by the piston 11 and the left end cover 8, and an oil inlet cavity is formed by the piston 11 and the right end cover 9; the left side of valve piece 1 is provided with constant power valve 12, and the case 13 of constant power valve 12 stretches into passageway 6, is provided with pendulum rod 2 along its axial in the passageway 6, and the round pin axle 14 has been set firmly at the top of pendulum rod 2, and round pin axle 14 rotation is installed in valve piece 1 top, and pendulum rod 2's one end sets up with case 13 relatively, and pendulum rod 2's the other end sets up with piston push rod 4 relatively, oil inlet 15 has still been seted up at valve piece 1's top, and oil inlet 15 communicates through oil circuit hole A16 with the oil feed chamber, is connected with into oil pressure gauge 17 on the oil circuit hole A16, and oil return port 18 has been seted up to valve piece 1's rear side, and oil return port 18 communicates with passageway 6, still be provided with output oil pressure gauge 19 on the valve piece 1, output oil pressure gauge 19 communicates with the oil return chamber through oil circuit hole B20.
The sliding sleeve 7 is propped against the shoulder of the stepped hole 5 under the locking force of the plug 3 and the internal thread. The oil inlet pressure gauge 17 is arranged at the top of the valve block 1.
The device is a method for testing a constant power valve, and comprises the following steps:
s1, pumping hydraulic oil into an oil inlet 15, detecting the pressure P1 in an oil inlet cavity by an oil inlet pressure gauge 17, pushing a piston 11 to move towards a channel 6 after the hydraulic oil enters the oil inlet cavity, enabling the hydraulic oil in an oil return cavity to flow out sequentially through the channel 6 and an oil return port 18, detecting the pressure P2 in the oil return cavity by an oil outlet pressure gauge 19, driving a piston push rod 4 to push one end of a swing rod 2 by the piston 11, enabling the swing rod 2 to swing around a pin shaft 14, and then pushing a valve core 13 of a constant power valve 12 by the other end of the swing rod 2, so that the constant power valve is regulated, and ensuring that the constant power valve 12 outputs pressure oil; a pressure gauge is arranged at an oil return port of the constant power valve 12, and the output power of the constant power valve is detected through the pressure gauge;
s2, slowly raising P1 to 20bar by workers until the output pressure of the constant power valve 12 is 10 bar;
s3, gradually lowering P1 until the P1 is displayed as 0bar, gradually raising the P1, and simultaneously recording the P1 value corresponding to each interval of 10bar from 10bar to 240bar of P2;
s4, calling back P1, and recording a corresponding P1 value when P2 displays 10bar at each interval;
s5, corresponding to each value of P2, calculating the rising and falling pressure difference of P1, and if the difference is less than or equal to 2bar, judging that the follow-up performance is qualified; if P1 is 250bar, the leakage quantity of the T port is less than or equal to 100ml, and the T port is qualified. Therefore, the constant power valve is arranged on the valve block 1, and the hydraulic cylinder consisting of the piston push rod 4, the piston and the plug 3 is also arranged on the valve block 1, so that the installation space is greatly saved compared with the installation of the traditional hydraulic pump and the constant power valve. In addition, the valve core of the constant power valve is not required to be manually shifted to test the constant power valve, so that the labor intensity of workers is greatly reduced, and the production cost is reduced.
Claims (2)
1. A testing device of a constant power valve is characterized in that: the novel valve comprises a valve block (1), a swing rod (2), a plug (3) and a piston push rod (4), wherein a step hole (5) and a channel (6) are formed in the front side of the valve block (1), the step hole (5) is perpendicular to the channel (6), an internal thread is formed in a large hole of the step hole (5), a sliding sleeve (7) is fixedly arranged in a small hole of the step hole (5), a left end cover (8) and a right end cover (9) are respectively fixedly arranged at two ends of the sliding sleeve (7), guide holes are respectively formed in the left end cover (8) and the right end cover (9), the piston push rod (4) is slidably arranged between the two guide holes, a piston (11) capable of sliding along the sliding sleeve (7) is fixedly arranged on the piston push rod (4), the piston (11) and the left end cover (8) form an oil return cavity, and the piston (11) and the right end cover (9) form an oil inlet cavity; the left side of the valve block (1) is provided with a constant power valve (12), a valve core (13) of the constant power valve (12) stretches into the channel (6), a swing rod (2) is axially arranged in the channel (6), a pin shaft (14) is fixedly arranged at the top of the swing rod (2), the pin shaft (14) is rotatably arranged at the top of the valve block (1), one end of the swing rod (2) is oppositely arranged with the valve core (13), the other end of the swing rod (2) is oppositely arranged with the piston push rod (4), the top of the valve block (1) is also provided with an oil inlet (15), the oil inlet (15) is communicated with an oil inlet cavity through an oil way hole A (16), an oil inlet pressure gauge (17) is connected to the oil way hole A (16), an oil return opening (18) is formed in the rear side of the valve block (1), the oil return opening (18) is communicated with the channel (6), and the valve block (1) is also provided with an output oil pressure gauge (19), and the output oil pressure gauge (19) is communicated with the cavity through an oil way hole B (20). The sliding sleeve (7) is propped against the shoulder of the step hole (5) under the locking force of the plug (3) and the internal thread; the oil inlet pressure gauge (17) is arranged at the top of the valve block (1).
2. The testing method of the testing device of the constant power valve according to claim 1, wherein: it comprises the following steps:
the method comprises the steps that S1, hydraulic oil is pumped into an oil inlet (15), an oil inlet pressure gauge (17) detects the pressure P1 in an oil inlet cavity, after the hydraulic oil enters the oil inlet cavity, a piston (11) is pushed to move towards a channel (6), the hydraulic oil in an oil return cavity flows out sequentially through the channel (6) and an oil return port (18), an output oil pressure gauge (19) detects the pressure P2 in the oil return cavity, meanwhile, the piston (11) drives a piston push rod (4) to push one end of a swing rod (2), the swing rod (2) swings around a pin shaft (14), and then the other end of the swing rod (2) pushes a valve core (13) of a constant power valve (12), so that the constant power valve is regulated, and the constant power valve (12) is ensured to output pressure oil; a pressure gauge is arranged at an oil return port of the constant power valve (12), and the output power of the constant power valve is detected through the pressure gauge;
s2, slowly raising P1 to 20bar by workers until the output pressure of the constant power valve (12) is 10 bar;
s3, gradually lowering P1 until the P1 is displayed as 0bar, gradually raising the P1, and simultaneously recording the P1 value corresponding to each interval of 10bar from 10bar to 240bar of P2;
s4, calling back P1, and recording a corresponding P1 value when P2 displays 10bar at each interval;
s5, corresponding to each value of P2, calculating the rising and falling pressure difference of P1, and if the difference is less than or equal to 2bar, judging that the follow-up performance is qualified; if P1 is 250bar, the leakage quantity of the T port is less than or equal to 100ml, and the T port is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910086953.7A CN109595221B (en) | 2019-01-29 | 2019-01-29 | Testing device and testing method for constant-power valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910086953.7A CN109595221B (en) | 2019-01-29 | 2019-01-29 | Testing device and testing method for constant-power valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595221A CN109595221A (en) | 2019-04-09 |
| CN109595221B true CN109595221B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910086953.7A Active CN109595221B (en) | 2019-01-29 | 2019-01-29 | Testing device and testing method for constant-power valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004083650A1 (en) * | 2003-03-19 | 2004-09-30 | Daimlerchrysler Ag | Method for testing the function of a hydraulic valve and a test bench for carrying out said method |
| CN102425541A (en) * | 2011-12-20 | 2012-04-25 | 无锡威孚精密机械制造有限责任公司 | Constant power valve |
| CN107165877A (en) * | 2017-06-14 | 2017-09-15 | 燕山大学 | A kind of big orifice extra-high voltage liquid proportional inserted valve dynamic performance and testing |
| CN107664118A (en) * | 2017-11-07 | 2018-02-06 | 安徽博流体传动股份有限公司 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
| CN209458222U (en) * | 2019-01-29 | 2019-10-01 | 青神格林维尔流体动力控制技术有限公司 | A kind of test device of constant power valve |
-
2019
- 2019-01-29 CN CN201910086953.7A patent/CN109595221B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004083650A1 (en) * | 2003-03-19 | 2004-09-30 | Daimlerchrysler Ag | Method for testing the function of a hydraulic valve and a test bench for carrying out said method |
| CN102425541A (en) * | 2011-12-20 | 2012-04-25 | 无锡威孚精密机械制造有限责任公司 | Constant power valve |
| CN107165877A (en) * | 2017-06-14 | 2017-09-15 | 燕山大学 | A kind of big orifice extra-high voltage liquid proportional inserted valve dynamic performance and testing |
| CN107664118A (en) * | 2017-11-07 | 2018-02-06 | 安徽博流体传动股份有限公司 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
| CN209458222U (en) * | 2019-01-29 | 2019-10-01 | 青神格林维尔流体动力控制技术有限公司 | A kind of test device of constant power valve |
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| Publication number | Publication date |
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| CN109595221A (en) | 2019-04-09 |
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