CN102879165A - Pressure tester - Google Patents
Pressure tester Download PDFInfo
- Publication number
- CN102879165A CN102879165A CN2012103413613A CN201210341361A CN102879165A CN 102879165 A CN102879165 A CN 102879165A CN 2012103413613 A CN2012103413613 A CN 2012103413613A CN 201210341361 A CN201210341361 A CN 201210341361A CN 102879165 A CN102879165 A CN 102879165A
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- Prior art keywords
- valve
- pressure
- solenoid valve
- impact
- pressurize
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- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000004378 air conditioning Methods 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 15
- 230000003116 impacting effect Effects 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a pressure tester and belongs to the technical field of pressure testers. The pressure tester comprises an air-conditioning three-point combined device, pressure-regulating valves, pressure gages, a shuttle valve, a quick exhaust valve, an assistor, a pressure transmitter, an oil valve solenoid valve, an impact solenoid valve and a pressure-maintaining solenoid valve, wherein an output end of the air-conditioning three-point combined device is respectively connected with the impact solenoid valve and the pressure-maintaining solenoid valve through a pressure-regulating valve; one pressure gage is connected between one pressure-regulating valve and the impact solenoid valve and another pressure gage is connected between another pressure-regulating valve and the pressure-maintaining solenoid valve; the other ends of the impact solenoid valve and the pressure-maintaining solenoid valve are connected with an air inlet end of the quick exhaust valve through the shuttle valve; an air outlet end of the quick exhaust valve is connected with the pressure transmitter through the assistor; and the other end of the pressure transmitter is connected with the oil valve solenoid valve. The pressure tester has the advantage that a workpiece can be subjected to pressure maintaining check and impact machine test.
Description
Technical field
The present invention relates to a kind of pressure testing machine, belong to the pressure testing machine technical field.
Background technology
Engineering machinery brake mainly refers to the brake gear in the engineering machinery, to utilize the non-rotating element link to each other with vehicle body (or vehicle frame) and stop the mechanical component that stop or slowing down of engineering truck wheel with phase mutual friction between the rotating element that wheel (or transmission shaft) links to each other, comprise that a metal brake drum take inner headed face as working surface is fixed on the hub for vehicle wheel, together rotates with wheel; On fixed back-plate, two fulcrum posts are arranged, the lower end of supporting two arc brake-shoes; On the periphery of brake-shoe friction disc is housed; Hydraulic braking wheel cylinder also is housed on the back-plate, is connected with hydraulic brake master on being contained in vehicle frame with oil pipe; Piston in the master cylinder can be handled by brake treadle mechanism by the driver.
In order to guarantee that braking quality is good, detent must be through check before dispatching from the factory, the pressure testing machine that now is used for check comprises air conditioning composite set, pressure regulator valve, tensimeter, shuttle valve, rapid escape valve, assistor, pressure unit and fuel tap solenoid valves at 3, before using 3 composite sets of source of the gas and air conditioning are connected, need the detent workpiece of check to be connected with the fuel tap solenoid valve, connecting rear ventilation can carry out to pressing the pressurize test the detent workpiece, and whether examining workpieces satisfies to pressing the pressurize requirement.But can't carry out the impact machine test to workpiece, still not reach the requirement of check.
Summary of the invention
Problem for above-mentioned prior art exists the invention provides a kind of pressure testing machine, can carry out can carrying out the impact machine test to it simultaneously to pressing the pressurize check to workpiece.
To achieve these goals, the technical solution used in the present invention is: a kind of pressure testing machine, comprise 3 composite sets of air conditioning, pressure regulator valve, tensimeter, shuttle valve, rapid escape valve, assistor, pressure unit and fuel tap solenoid valve, also comprise and impact solenoid valve and pressurize solenoid valve, the output terminal of 3 composite sets of air conditioning is connected with the pressurize solenoid valve with the impact solenoid valve by a pressure regulator valve respectively, pressure regulator valve is connected respectively a tensimeter with impacting between solenoid valve and the pressurize solenoid valve, impacting solenoid valve is connected the other end and all is connected with the inlet end of rapid escape valve by shuttle valve with the pressurize solenoid valve, the outlet side of rapid escape valve is connected with pressure unit by assistor, and the other end of pressure unit is connected with the fuel tap solenoid valve.
Also comprise the pressure display unit that is connected between pressure regulator valve and the pressurize solenoid valve.
The invention has the beneficial effects as follows: increase on original basis and impact solenoid valve and pressurize solenoid valve, behind the default initial value of impact number of times and dwell time, guaranteeing air pressure, when tolerance is sufficient, 3 composite sets of source of the gas and air conditioning are connected, and be connected with the output terminal of fuel tap solenoid valve in the pressure testing machine with the oil-in of hydraulic quick coupler with detent workpiece to be detected, the switch that impacts solenoid valve and pressurize solenoid valve by control carries out to the test of pressing pressurize or impact, namely when carrying out impulse test, can open impacting solenoid valve, the pressurize closed electromagnetic valve, pressurized air is through 3 composite sets of air conditioning, pressure regulator valve, impact solenoid valve, shuttle valve, rapid escape valve, assistor, pressure unit and fuel tap solenoid valve enter workpiece, and the piston of controlling in the workpiece by pressure carries out back and forth movement; Successively workpiece is carried out impulse test, when effectively impacting number of times in the certain hour and reach default initial value and workpiece leakage of oil does not occur, illustrate that the pressure testing of workpiece meets the requirements; Closed electromagnetic valve is impacted in simultaneously control, open the pressurize solenoid valve, pressurized air through air conditioning 3 composite sets, pressure regulator valve, pressurize solenoid valves reach, shuttle valve, rapid escape valve, assistor, pressure unit and fuel tap solenoid valve enter workpiece, and between these valves, reach balance, enter packing state, workpiece is carried out the pressurize test, reach default initial value when the dwell time, when letting out in not occurring when not having pressure drop or pressure drop to be no more than a certain scope, the expression workpiece meets the requirements; Opposite, if leakage of oil appears in workpiece in the pressure testing process or in pressure maintaining period, occur in let out, represent that then workpiece is undesirable.
Description of drawings
Fig. 1 is control principle drawing of the present invention.
Among the figure: 1,3 composite sets of air conditioning, 2, pressure regulator valve, 3, shuttle valve, 4, rapid escape valve, 5, assistor, 6, pressure unit, 7, the fuel tap solenoid valve, 8, impact solenoid valve, 9, the pressurize solenoid valve, 10, tensimeter.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes for 3 composite sets 1 of air conditioning with the pressurized air gas-water separation, pressure regulator valve 2, tensimeter 10, shuttle valve 3 is for the rapid escape valve 4 of exhaust, noise elimination, assistor 5, pressure unit 6, fuel tap solenoid valve 7 impacts solenoid valve 8, and pressurize solenoid valve 9; The output terminal of 3 composite sets 1 of air conditioning is connected with the pressurize solenoid valve with impact solenoid valve 8 by a pressure regulator valve 2 respectively and is connected, pressure regulator valve 2 is connected respectively a tensimeter 10 with impacting between solenoid valve 8 and the pressurize solenoid valve 9, the other end that impact solenoid valve 8 is connected with the pressurize solenoid valve all is connected by the inlet end of shuttle valve 3 with rapid escape valve 4, the outlet side of rapid escape valve 4 is connected with pressure unit 6 by assistor 5, and the other end of pressure unit 6 is connected with fuel tap solenoid valve 7.
Guarantee air pressure, tolerance abundance before using, source of the gas guarantees the kilogram at 8-10,3 composite sets 1 of source of the gas (i.e. pressurized air among the figure) and air conditioning are connected, be connected with the output terminal of fuel tap solenoid valve 7 in the pressure testing machine with the oil-in of hydraulic quick coupler with detent workpiece to be detected, a counter is connected with impact solenoid valve 8, a timer is connected with pressurize solenoid valve 9, and gives counter and the default initial value of timer.
During use, press start button, 5 moments of assistor are that the detent workpiece injects brake fluid, impact solenoid valve 8 and open, and pressurize solenoid valve 9 cuts out; Pressurized air in the source of the gas is after 3 composite sets 1 of air conditioning carry out gas-water separation, enter shuttle valve 3 through pressure regulator valve 2 and impact solenoid valve 8 again, the piston that promotes in the shuttle valve 3 moves and is pressed on the valve base sealing to shuttle valve 3 right-hand members, shuttle valve 3 right-hand members are shut, gas enters rapid escape valve 4 through shuttle valve 3 upper ends, the piston that promotes in the rapid escape valve 4 moves and is pressed on the valve base sealing to rapid escape valve 4 right-hand members, rapid escape valve 4 right-hand members are shut, gas is through the upper end of rapid escape valve 4, assistor 5, pressure unit 6, fuel tap solenoid valve 7 enters workpiece, promotes the piston advances forward in the workpiece; When pressure rise arrives predetermined value, the machine releasing pressure automatically, counter begins to impact number of times in respect of effect, and (3 seconds of interval once, needed for 2 seconds) at every turn, when the piston in the workpiece was toward resilience simultaneously, gas entered rapid escape valve 4 through the upper end of fuel tap solenoid valve 7, pressure unit 6, assistor 5, rapid escape valve 4 in the workpiece, the at this moment left end of rapid escape valve 4 sealing, right-hand member is opened, and gas is discharged from the right-hand member of rapid escape valve 4; After discharging a part, the pistons in the rapid escape valve 4 are moved to right-hand member by left end by the impact of the gas that shuttle valve 3 sends, sealing rapid escape valve 4 right-hand members, and gas enters assistor again and drives the motion of workpiece inner carrier through the upper end of rapid escape valve 4; Switching by control rapid escape valve 4 left and right sides and piston move back and forth to repeat impulse test, the effective impact number of times that shows when counter does not still reach default initial value or never variation within a certain period of time, or workpiece represents that then workpiece is undesirable when oil leakage phenomenon occurring; When effective impact number of times of counter demonstration reaches preset value, the machine automatic pressure-maintaining; Namely impacting solenoid valve 8 closes, pressurize solenoid valve 9 is opened, gas after 3 composite set 1 gas-water separation of air conditioning is through pressure regulator valve 2, pressurize solenoid valve 9 enters shuttle valve 3, piston in the shuttle valve 3 is to the left end motion of shuttle valve 3, and with the sealing of the left end of shuttle valve 3, gas enters rapid escape valve 4 through shuttle valve 3 upper ends again, the piston that promotes in the rapid escape valve 4 moves and is pressed on the valve base sealing to rapid escape valve 4 right-hand members, rapid escape valve 4 right-hand members are shut, gas is through the upper end of rapid escape valve 4, assistor 5, pressure unit 6, fuel tap solenoid valve 7 enters workpiece, when force value reaches preset value, enter the pressurize test status, timer begins timing, reaches default initial value when the dwell time, when letting out in not occurring, the expression workpiece meets the requirements; Opposite, if occur letting out in leakage of oil or the appearance, represent that then workpiece is undesirable.
Certainly, also counter and timer can be set, operating personnel directly carry out impulse test by the back and forth movement number of times of watching tensimeter 10 and piston, enter the variation of watching tensimeter 10 behind the packing state and carry out pressurize and detect, be that this precision of method is not high, effect is bad.
Preferably, also comprise the pressure display unit that is connected between pressure regulator valve 2 and the pressurize solenoid valve 9, when entering packing state, can be by watching force value on the pressure display unit whether to change and amplitude of variation judges whether the pressurize of workpiece meets the requirements, compare by the swing of pointer on the tensimeter 10 and judge, more directly perceived, more accurate.
Claims (2)
1. pressure testing machine, comprise air conditioning 3 composite sets (1), pressure regulator valve (2), tensimeter (10), shuttle valve (3), rapid escape valve (4), assistor (5), pressure unit (6) and fuel tap solenoid valve (7), it is characterized in that, also comprise and impact solenoid valve (8) and pressurize solenoid valve (9), the output terminal of air 3 composite sets of conditioning (1) is connected 9 with impact solenoid valve (8) with the pressurize solenoid valve by a pressure regulator valve (2) respectively) be connected, pressure regulator valve (2) is connected respectively a tensimeter (10) with impacting between solenoid valve (8) and the pressurize solenoid valve (9), impact solenoid valve (8) and be connected 9 with the pressurize solenoid valve) the other end all be connected by the inlet end of shuttle valve (3) with rapid escape valve (4), the outlet side of rapid escape valve (4) is connected with pressure unit (6) by assistor (5), and the other end of pressure unit (6) is connected with fuel tap solenoid valve (7).
2. a kind of pressure testing machine according to claim 1 is characterized in that, also comprises the pressure display unit that is connected between pressure regulator valve (2) and the pressurize solenoid valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341361.3A CN102879165B (en) | 2012-09-14 | 2012-09-14 | Pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341361.3A CN102879165B (en) | 2012-09-14 | 2012-09-14 | Pressure tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102879165A true CN102879165A (en) | 2013-01-16 |
| CN102879165B CN102879165B (en) | 2015-06-03 |
Family
ID=47480576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210341361.3A Expired - Fee Related CN102879165B (en) | 2012-09-14 | 2012-09-14 | Pressure tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102879165B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985462A (en) * | 2019-12-12 | 2020-04-10 | 四川凌峰航空液压机械有限公司 | Hydraulic system for eliminating pulse test actuating cylinder and pipeline gas thereof |
| CN118565966A (en) * | 2024-07-31 | 2024-08-30 | 昆山灵科传感技术有限公司 | Display processing method, system and related equipment for pressure shock test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020035832A1 (en) * | 2000-09-25 | 2002-03-28 | Toyota Jidosha Kabushiki Kaisha | Apparatus for diagnosing accumulator based on fluid pressure in its fluid-tightly sealed state |
| JP2005280516A (en) * | 2004-03-30 | 2005-10-13 | Nabtesco Corp | Maintenance timing detection mechanism for brake control system for railway vehicles |
| CN101813564A (en) * | 2010-03-09 | 2010-08-25 | 上海大学 | Automation testing platform control air circuit system of subway brake unit |
| CN202836914U (en) * | 2012-09-14 | 2013-03-27 | 徐州鼎元机械有限公司 | Pressure testing machine |
-
2012
- 2012-09-14 CN CN201210341361.3A patent/CN102879165B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020035832A1 (en) * | 2000-09-25 | 2002-03-28 | Toyota Jidosha Kabushiki Kaisha | Apparatus for diagnosing accumulator based on fluid pressure in its fluid-tightly sealed state |
| JP2005280516A (en) * | 2004-03-30 | 2005-10-13 | Nabtesco Corp | Maintenance timing detection mechanism for brake control system for railway vehicles |
| CN101813564A (en) * | 2010-03-09 | 2010-08-25 | 上海大学 | Automation testing platform control air circuit system of subway brake unit |
| CN202836914U (en) * | 2012-09-14 | 2013-03-27 | 徐州鼎元机械有限公司 | Pressure testing machine |
Non-Patent Citations (1)
| Title |
|---|
| 李昕: "MYNE PET6整体车架式客货车气动控制系统分析", 《机械工程与自动化》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985462A (en) * | 2019-12-12 | 2020-04-10 | 四川凌峰航空液压机械有限公司 | Hydraulic system for eliminating pulse test actuating cylinder and pipeline gas thereof |
| CN110985462B (en) * | 2019-12-12 | 2021-08-06 | 四川凌峰航空液压机械有限公司 | Hydraulic system for eliminating pulse test actuating cylinder and pipeline gas thereof |
| CN118565966A (en) * | 2024-07-31 | 2024-08-30 | 昆山灵科传感技术有限公司 | Display processing method, system and related equipment for pressure shock test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102879165B (en) | 2015-06-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20160914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |