CN202108797U - Hydraulic test bed - Google Patents

Hydraulic test bed Download PDF

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Publication number
CN202108797U
CN202108797U CN2011202310748U CN201120231074U CN202108797U CN 202108797 U CN202108797 U CN 202108797U CN 2011202310748 U CN2011202310748 U CN 2011202310748U CN 201120231074 U CN201120231074 U CN 201120231074U CN 202108797 U CN202108797 U CN 202108797U
Authority
CN
China
Prior art keywords
oil
valve
hydraulic
group
selector valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011202310748U
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Chinese (zh)
Inventor
黄宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TANGSHAN CHINA RAILWAY INDUSTRY CO LTD
Original Assignee
TANGSHAN CHINA RAILWAY INDUSTRY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TANGSHAN CHINA RAILWAY INDUSTRY CO LTD filed Critical TANGSHAN CHINA RAILWAY INDUSTRY CO LTD
Priority to CN2011202310748U priority Critical patent/CN202108797U/en
Application granted granted Critical
Publication of CN202108797U publication Critical patent/CN202108797U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a hydraulic test unit, particularly to a hydraulic test bed. The hydraulic test bed comprises an oil tank, an oil feed pump, a hydraulic oil pipeline and hydraulic cylinders; the oil feed pump is a twin pump; the hydraulic cylinder is a double-action single-piston rod hydraulic rod; one oil feed hole of the twin pump is respectively connected with oil inlets of three reversing valves by the hydraulic oil pipeline; the three reversing valves are all two-position four-way reversing valves, wherein oil outlets of the second reversing valve and the third reversing valve are respectively communicated with rod chambers of a first group of hydraulic cylinders and a second group of hydraulic cylinders; an oil outlet of the first reversing valve is communicated with rod-free chambers of the first group of hydraulic cylinders; the other oil outlet of the twin pump is communicated with an oil inlet at one valve position of a fourth reversing valve by the hydraulic oil pipeline; and compared with the prior art, the hydraulic test bed implements a grinding-in test for a tamping device during use of the tamping device in a large road maintenance machine, thereby prolonging the service life of the tamping device and also preventing inconvenience caused when the tamping device is dismounted in a car.

Description

Hydraulic test bench
Technical field:
The utility model relates to a kind of hydraulic testing apparatus, particularly a kind of hydraulic test bench.
Background technique:
At present, the core tamping unit in the large-scale maintenance machinery tamping car is divided into two groups of cylinders, and every group all is double-action single-piston-rod hydraulic cylinders, all is that an end is that the rodless cavity the other end is the structure of rod chamber on every group of oil hydraulic cylinder;
When tamping unit directly was installed on the tamping car without break-in, carried out the running-in period that tamping unit is used when device work, if device has underproof position like this, and must the dismounting tamping unit.Tamping unit weight is big, and volume is big, is not easy to dismounting.
The model utility content:
The goal of the invention of the utility model be to overcome the deficiency of background technique and provide a kind of to the break-in of the advanced row of tamping unit again to its hydraulic test bench of installing.
The utility model adopts following technological scheme:
A kind of hydraulic test bench comprises fuel tank, oil feed pump, and hydraulic fluid pipeline, oil hydraulic cylinder, said oil feed pump is a duplex pump, said oil hydraulic cylinder is the double-action single-piston-rod hydraulic cylinder; One of them oil-feed port of said duplex pump is connected with three selector valve filler openings through hydraulic fluid pipeline respectively, and these three selector valves all are two-position four way change valves, are respectively first selector valve, second selector valve and the 3rd selector valve; And be equipped with shutoff on the oil outlet on one of them valve position of each two-position four way change valve; Oil outlet on another valve position of this two-position four way change valve is communicated with oil hydraulic cylinder through hydraulic fluid pipeline; Wherein the oil outlet of second selector valve and the 3rd selector valve is communicated with the rod chamber of first group of oil hydraulic cylinder and second group of oil hydraulic cylinder respectively, and the oil outlet of first selector valve is communicated with the rodless cavity of first group of oil hydraulic cylinder; The return opening of above-mentioned each two-position four way change valve all directly is connected with fuel tank; Another oil-feed port in the said duplex pump is communicated with filler opening on one of them valve position of the 4th selector valve through hydraulic fluid pipeline, and the oil outlet on this valve position is communicated with the rodless cavity of second group of oil hydraulic cylinder, and the 4th selector valve is a two-position four way change valve; On filler opening on another valve position of the 4th selector valve and the oil outlet shutoff is housed all.
The utility model of employing technique scheme compared with prior art; When the tamping unit in the large-scale maintenance machinery uses; Tamping unit is carried out running-in test, can prolong tamping unit working life, avoided tamping unit to ask the inconvenience of dismounting onboard again.
As a kind of preferred version of the utility model, on said first selector valve and the hydraulic fluid pipeline that first group of oil hydraulic cylinder is connected one way pressure-reducing valve is housed.
As a kind of preferred version of the utility model, on two oil-feed ports of said duplex pump and the hydraulic fluid pipeline that the selector valve filler opening is connected remote pressure regulating valve is housed all.
As a kind of preferred version of the utility model, on the filler opening of said duplex pump and the hydraulic fluid pipeline that fuel tank is connected low-pressure shutoff valve and oil suction oil purifier are housed.
As a kind of preferred version of the utility model, the quantity of said first group of hydraulic jack and second group of hydraulic jack equates that every group is equipped with two groups, and each group is equipped with two oil hydraulic cylinders.
Description of drawings:
Fig. 1 is the hydraulic schematic diagram of present embodiment.
Embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model is detailed:
A kind of hydraulic test bench is referring to accompanying drawing 1, among the figure: fuel tank 1, oil feed pump 2, one-way valve 3; Hydraulic fluid pipeline 4, the first selector valves 5, one way pressure-reducing valve 6, the second selector valves 7; 10, the first groups of oil hydraulic cylinders 11 of 9, the second groups of oil hydraulic cylinders of the 3rd selector valve 8, the four selector valves; Shutoff 12, remote pressure regulating valve 13, low-pressure shutoff valve 14, oil suction oil purifier 15.
In the present embodiment, oil feed pump 2 is duplex pumps, and two groups of oil hydraulic cylinders all are effect single-piston-rod hydraulic cylinders; One of them oil-feed port of duplex pump is connected with three selector valve filler openings through hydraulic fluid pipeline 4 respectively, and these three selector valves all are two-position four way change valves, is respectively first selector valve 5, second selector valve 7 and the 3rd selector valve 8; And be equipped with shutoff 12 on the oil outlet on one of them valve position of each two-position four way change valve; Oil outlet on another valve position of each two-position four way change valve is communicated with oil hydraulic cylinder through hydraulic fluid pipeline 4; Wherein the oil outlet of second selector valve 7 and the 3rd selector valve 8 is communicated with the rod chamber of first group of oil hydraulic cylinder 11 and second group of oil hydraulic cylinder 10 respectively, and the oil outlet of first selector valve 5 is communicated with the rodless cavity of first group of oil hydraulic cylinder 11; The return opening of aforementioned each two-position four way change valve all directly is connected with fuel tank 1.
Another oil-feed port in the duplex pump is communicated with filler opening on the 4th selector valve 9 one of them valve position through hydraulic fluid pipeline 4; Another oil-feed port in the duplex pump is communicated with filler opening on the 4th selector valve 9 one of them valve position through hydraulic fluid pipeline; Oil outlet on the valve position is communicated with the rodless cavity of second group of oil hydraulic cylinder 10, and the 4th selector valve 9 is two-position four way change valves; On filler opening on another valve position of the 4th selector valve 9 and the oil outlet shutoff 12 is housed all.
In the present embodiment, on first selector valve 5 and the hydraulic fluid pipeline 4 that first group of oil hydraulic cylinder 11 is connected one way pressure-reducing valve 6 is housed; On two oil-feed ports of duplex pump and the hydraulic fluid pipeline 4 that the selector valve filler opening is connected remote pressure regulating valve 13 is housed all; On the filler opening of duplex pump and the hydraulic fluid pipeline 4 that fuel tank 1 is connected low-pressure shutoff valve 14 and oil suction oil purifier 15 are housed; The quantity of first group of hydraulic jack 11 and second group of hydraulic jack 10 equates, every group of two groups that are equipped with parallelly connected state, and each group is equipped with two oil hydraulic cylinders of association status.
This enforcement can realize synchronously or the adjustment that distributes that in the time will realizing that substep is adjusted, recloser is in off state, i.e. manual position; When first selector valve 5 when electric, the rodless cavity oil-feed of first group of oil hydraulic cylinder 11; When second selector valve 7 when electric, the rod chamber oil-feed of first group of oil hydraulic cylinder 11; When the 4th selector valve 9 electric, the rodless cavity oil-feed of second group of oil hydraulic cylinder 10; When the 3rd selector valve 8 and the 4th selector valve 9 simultaneously electric, the rod chamber pressure of second group of oil hydraulic cylinder 10 is greater than rodless cavity pressure, the rod chamber oil-feed of second group of oil hydraulic cylinder 10.
In the time will realizing adjusting synchronously, recloser is in closed state, i.e. automated location; When second selector valve 7 electric, during first selector valve, 5 dead electricity, the rod chamber oil-feed of first group of oil hydraulic cylinder 11.
When the 4th selector valve 9 electric, the 3rd selector valve 8 dead electricity, the rod chamber oil-feed of second group of oil hydraulic cylinder 10; When first time delay relay gets when electric, after 10 seconds, the time delay relay normally-closed contact breaks off; Second selector valve, 7 dead electricity, the rod chamber stop motion of second group of oil hydraulic cylinder 10; The first time delay relay normally opened contact is closed, and first selector valve 5 gets electric, the rodless cavity oil-feed of first group of oil hydraulic cylinder 11, and the 3rd selector valve 8 gets electric, the rod chamber oil-feed of second group of oil hydraulic cylinder 10, simultaneously, second time delay relay gets.
After 10 seconds, between second time-delay between the relay normally-closed contact break off the first time delay relay dead electricity; The first time delay relay normally-closed contact is closed immediately, and second selector valve 7 gets electric, the rod chamber oil-feed of first group of oil hydraulic cylinder 11, and the 4th selector valve 9 gets electric, the rodless cavity oil-feed of second group of oil hydraulic cylinder 10; The first time delay relay normally opened contact breaks off immediately; First group of oil hydraulic cylinder 11 stops oil-feed, and the rod chamber of second group of oil hydraulic cylinder 10 stops oil-feed, the second time delay relay dead electricity; Second time delay relay is dead electricity immediately, and first time delay relay gets; First time delay relay get electric after, continue new circulation of beginning.
Through the control of relay, realize following circulation:
Circulation of 20s
? 0-10s 10-20s
The oil-feed of first group of oil hydraulic cylinder rodless cavity ?
The oil-feed of first group of oil hydraulic cylinder rod chamber ?
The oil-feed of second group of oil hydraulic cylinder rodless cavity ?
The oil-feed of second group of oil hydraulic cylinder rod chamber ?

Claims (5)

1. a hydraulic test bench comprises fuel tank, oil feed pump, and hydraulic fluid pipeline, oil hydraulic cylinder is characterized in that: said oil feed pump is a duplex pump, said oil hydraulic cylinder is the double-action single-piston-rod hydraulic cylinder;
One of them oil-feed port of said duplex pump is connected with three selector valve filler openings through hydraulic fluid pipeline respectively, and these three selector valves all are two-position four way change valves, are respectively first selector valve, second selector valve and the 3rd selector valve; And be equipped with shutoff on the oil outlet on one of them valve position of each two-position four way change valve; Oil outlet on another valve position of this two-position four way change valve is communicated with oil hydraulic cylinder through hydraulic fluid pipeline; Wherein the oil outlet of second selector valve and the 3rd selector valve is communicated with the rod chamber of first group of oil hydraulic cylinder and second group of oil hydraulic cylinder respectively, and the oil outlet of first selector valve is communicated with the rodless cavity of first group of oil hydraulic cylinder;
The return opening of above-mentioned each two-position four way change valve all directly is connected with fuel tank;
Another oil-feed port in the said duplex pump is communicated with filler opening on one of them valve position of the 4th selector valve through hydraulic fluid pipeline, and the oil outlet on this valve position is communicated with the rodless cavity of second group of oil hydraulic cylinder, and the 4th selector valve is a two-position four way change valve; On filler opening on another valve position of the 4th selector valve and the oil outlet shutoff is housed all.
2. hydraulic test bench according to claim 1 is characterized in that: on said first selector valve and the hydraulic fluid pipeline that first group of oil hydraulic cylinder is connected one way pressure-reducing valve is housed.
3. hydraulic test bench according to claim 1 is characterized in that: on two oil-feed ports of said duplex pump and the hydraulic fluid pipeline that the selector valve filler opening is connected remote pressure regulating valve is housed all.
4. hydraulic test bench according to claim 1 is characterized in that: on the filler opening of said duplex pump and the hydraulic fluid pipeline that fuel tank is connected low-pressure shutoff valve and oil suction oil purifier are housed.
5. hydraulic test bench according to claim 1 is characterized in that: the quantity of said first group of hydraulic jack and second group of hydraulic jack equates that every group is equipped with two groups, and each group is equipped with two oil hydraulic cylinders.
CN2011202310748U 2011-07-04 2011-07-04 Hydraulic test bed Expired - Fee Related CN202108797U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202310748U CN202108797U (en) 2011-07-04 2011-07-04 Hydraulic test bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202310748U CN202108797U (en) 2011-07-04 2011-07-04 Hydraulic test bed

Publications (1)

Publication Number Publication Date
CN202108797U true CN202108797U (en) 2012-01-11

Family

ID=45434233

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011202310748U Expired - Fee Related CN202108797U (en) 2011-07-04 2011-07-04 Hydraulic test bed

Country Status (1)

Country Link
CN (1) CN202108797U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588378A (en) * 2012-02-22 2012-07-18 浙江大学 Hydraulic cylinder for wave power generation
CN103867533A (en) * 2014-03-26 2014-06-18 上海电气液压气动有限公司 Hydraulic test system of railway tamping device
CN103867534A (en) * 2014-03-26 2014-06-18 上海电气液压气动有限公司 Hydraulic cylinder test device for railway tamping
CN106351894A (en) * 2016-10-21 2017-01-25 燕山大学 Open model pump control load cavity independent control asymmetrical cylinder power unit
CN109345943A (en) * 2018-10-31 2019-02-15 西安航空学院 A kind of Hydraulic Elements theory Internet-based and experimental synchronous tutoring system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588378A (en) * 2012-02-22 2012-07-18 浙江大学 Hydraulic cylinder for wave power generation
CN102588378B (en) * 2012-02-22 2014-09-10 浙江大学 Hydraulic cylinder for wave power generation
CN103867533A (en) * 2014-03-26 2014-06-18 上海电气液压气动有限公司 Hydraulic test system of railway tamping device
CN103867534A (en) * 2014-03-26 2014-06-18 上海电气液压气动有限公司 Hydraulic cylinder test device for railway tamping
CN103867533B (en) * 2014-03-26 2016-04-27 上海电气液压气动有限公司 A kind of hydraulic test system of railway tamping unit
CN106351894A (en) * 2016-10-21 2017-01-25 燕山大学 Open model pump control load cavity independent control asymmetrical cylinder power unit
CN109345943A (en) * 2018-10-31 2019-02-15 西安航空学院 A kind of Hydraulic Elements theory Internet-based and experimental synchronous tutoring system

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120111

Termination date: 20200704