CN202631265U - Tractor hydraulic hoisting test device - Google Patents
Tractor hydraulic hoisting test device Download PDFInfo
- Publication number
- CN202631265U CN202631265U CN 201220222480 CN201220222480U CN202631265U CN 202631265 U CN202631265 U CN 202631265U CN 201220222480 CN201220222480 CN 201220222480 CN 201220222480 U CN201220222480 U CN 201220222480U CN 202631265 U CN202631265 U CN 202631265U
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- China
- Prior art keywords
- master cylinder
- test device
- fuel tank
- valve
- hydraulic lifting
- 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
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- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The utility model discloses a tractor hydraulic hoisting test device, comprising an oil tank and a master cylinder, wherein the oil tank and the master cylinder are connected through an oil outlet pipe and an oil return pipe, a pipeline is formed by the oil outlet pipe and the oil return pipe, a first six-way electromagnetic reversing valve is arranged between the oil tank and the master cylinder, and a hydraulic lock is arranged between the master cylinder and the first six-way electromagnetic reversing valve. By adopting the hydraulic lock, the backflow of hydraulic oil in the master cylinder can be effectively prevented, the master cylinder is ensured not to move when measuring the maximum hoisting capacity, thereby achieving the measurement working conditions.
Description
Technical field
The utility model relates to a kind of agricultural machinery hydraulic test device, exactly is a kind of tractor hydraulic lifting test device.
Background technology
Adopt pouring weight to load and the oil cylinder loading in the tractor hydraulic lifting test now, wherein, it is convenient that brief introduction is measured in the oil cylinder loading.In the tractor hydraulic lifting test process that present oil cylinder loads, when measuring maximum pulling capacity, oil cylinder is elongated to and occurs oil cylinder easily behind the assigned position and move, and can't satisfy the operating mode of measurement.When carrying out quiet settling test, it is slower to regulate in the press process device response speed, and degree of regulation is low, and measurement result is inaccurate.When carrying out the test of six branch, in the lifting process of tractor, because fuel feeding is not enough; The pulling speed of tractor will be much larger than the translational speed of oil cylinder, and the general increase pipeline diameter mode that adopts solves, and this method increases experimentation cost; Pipeline weight is big, moves inconvenient.
The utility model content
The utility model provides a kind of tractor hydraulic lifting test device, can effectively address the above problem.
The utility model is for realizing above-mentioned purpose; Realize through following technical scheme: tractor hydraulic lifting test device; Comprise fuel tank and master cylinder, be connected with scavenge pipe through flowline between fuel tank and the master cylinder that flowline and scavenge pipe are pipeline; The one or six energising magnetic reversal valve is set between fuel tank and the master cylinder, between master cylinder and the one or the six energising magnetic reversal valve hydraulic lock is set.
In order further to realize the purpose of the utility model, can also adopt following technical scheme: between described master cylinder and the one or the six energising magnetic reversal valve ratio adjusting valve is set, PMU is set on the pipeline.Two bypasses are set between described fuel tank and the master cylinder, a four-way change-over valve is installed in each bypass, four-way change-over valve and the or six is switched on parallelly connected between the magnetic reversal valve, between the oil pocket of master cylinder solenoid valve is set.On the flowline of described fuel tank and the scavenge pipe branch road is set, branch road auxiliary connection oil cylinder is provided with the two or six energising magnetic reversal valve between fuel tank and the auxiliary oil cylinder.Between the flowline of described fuel tank and the return line electromagnetic relief valve is set.Liquid level gauge, air cleaner and/or liquid level relay are set on the described fuel tank.On the described pipeline temperature inductor is set.Described PMU is the pressure inductor or first shock-proof pressure gauge.Described pressure inductor connects second shock-proof pressure gauge, between the pressure inductor and second shock-proof pressure gauge pressure meter switch is set.Ram pump and retaining valve are set on the flowline of described fuel tank, and ram pump connects motor.
The advantage of the utility model is: can prevent effectively that through hydraulic lock the hydraulic oil in the master cylinder from refluxing, guarantee that oil cylinder does not move when measuring maximum pulling capacity, thereby reach the operating mode of measurement.The passing ratio operation valve can fast adjuster pressure, and degree of regulation is higher, improves the measurement result accuracy.Through the solenoid valve on the master cylinder, increase the flow path of hydraulic oil, play the effect of quick dividing potential drop, need not to change pipeline, conveniently moving.The utility model also has compactness simple for structure, advantage cheap for manufacturing cost and easy to use.
Description of drawings
Fig. 1 is the utility model structural representation.
Reference numeral: 1 fuel tank, 2 liquid level gauges, 3 oil return oil filters, 4 air filters, 5 oil suction oil filters, 6 liquid level relays, 7 plunger displacement pumps, 8 motors, 9 check valves, 10 electromagnetic relief valves, 11 first shock-proof pressure gauges, 12 four-way change-over valves 13 the one or six energising magnetic reversal valve, 14 stack one-way throttle valves, 15 ratio adjusting valves, 16 hydraulic lock, 17 master cylinders, 18 auxiliary oil cylinders, 19 temperature inductors, 20 pressure inductors, 21 pressure meter switches, 22 second shock-proof pressure gauges 23 the two or six energising magnetic reversal valve, 24 magnetic valves.
Embodiment
Tractor hydraulic lifting test device; As shown in the figure; Comprise fuel tank 1 and master cylinder 17, be connected with scavenge pipe through flowline between fuel tank 1 and the master cylinder 17 that flowline and scavenge pipe are pipeline; The one or six energising magnetic reversal valve 13 is set between fuel tank 1 and the master cylinder 17, between master cylinder 17 and the one or the six energising magnetic reversal valve 13 hydraulic lock 16 is set.The hydraulic pressure lift test is accomplished in cooperation when working with master cylinder 17 through the one or six energising magnetic reversal valve 13.When measuring maximum pulling capacity, in the lifting process of tractor, master cylinder 17 can not extend, the concrete realization as follows: when the fuel feeding of the left chamber of master cylinder 17, can open the retaining valve in right chamber, otherwise can open the retaining valve in left chamber during the fuel feeding of right chamber; If two chambeies are fuel feeding the time, about two chambeies all seal into the retaining valve state; If about two chambeies all have pressure oil to provide, about two chambeies can open and no longer include single effect simultaneously.During operate as normal, oil cylinder rises, and opens the retaining valve in right chamber, and oil cylinder rises; When oil cylinder descends, open the retaining valve in left chamber, oil cylinder descends; When about two chambeies not during fuel feeding, about two chambeies all seal into the retaining valve state, transfixion falls in oil cylinder, does not have any elongation, satisfies the operating mode of testing requirements.
Between described master cylinder 17 and the one or the six energising magnetic reversal valve 13 ratio adjusting valve 15 is set, PMU is set on the pipeline.Ratio adjusting valve 15 adopts electric feedback, and when signal was imported, main valve plug drove the displacement transducer motion that is attached thereto, when the displacement signal of feedback equates with given signal, and the main valve plug stop motion, proportioning valve reaches a new equilibrium position.Ratio adjusting valve 15 can setting device pressure, realizes accomplishing with master cylinder 17 the quiet settling test of tractor.After accomplishing the feed pull maximum test, when doing quiet settling test, first handle assembly pressure setting is to minimum, and slow charger pressure is through observing PMU, up to the feed pull maximum that reaches tractor.Quiet practice test adopts proportional control valve to come setting device pressure, and the device response is rapid, and degree of regulation is high, satisfies the requirement of test fully.
Two bypasses are set between described fuel tank 1 and the master cylinder 17, a four-way change-over valve 12 is installed in each bypass, four-way change-over valve 12 and the or six is switched on parallelly connected between the magnetic reversal valve 13, and solenoid valve 24 is set between the oil pocket of master cylinder 17.When carrying out experimental tests in six fens; When last experimental tests finishes to carry out next experimental tests, open solenoid valve 24, when tested oil cylinder rises; The distance that tested oil cylinder upper oil cavitie reduces is identical with the distance that the oil cylinder lower oil cavitie increases; But upper oil cavitie has piston rod, so same only need consume the needs that a spot of oil just can replenish upper oil cavitie apart from lower oil cavitie, has solved the tractor problem that the oil cylinder ascending velocity does not catch up with in the process that promotes.
On the flowline of described fuel tank 1 and the scavenge pipe branch road is set, branch road auxiliary connection oil cylinder 18 is provided with the two or six energising magnetic reversal valve 23 between fuel tank 1 and the auxiliary oil cylinder 18.Auxiliary oil cylinder 18 is topworkies of counterweight elevating mechanism, can regulate the position of counterweight in vertical direction, so that be connected with lift frame.
Liquid level gauge 2, air cleaner 4 and liquid level relay 6 are set on the described fuel tank 1.The liquid level of hydraulic oil in the liquid level gauge 2 real-time monitored fuel tanks 1, the fluid liquid level is crossed when hanging down in the fuel tank 1, and the protection test device quits work; Air cleaner 4 can prevent that dust in air from getting into fuel tank; When liquid level is lower than assigned position, liquid level relay 6 will send a normally closed signal, notify the staff to stop whole device work.
Described PMU is the pressure inductor 20 or first shock-proof pressure gauge 11, through the pressure of gauge outfit real-time monitoring device.
Described pressure inductor 20 connects second shock-proof pressure gauge 22, between the pressure inductor 20 and second shock-proof pressure gauge 22 pressure meter switch 21 is set.Realize the work of second shock-proof pressure gauge 22 through opening and closing pressure meter switch.
Oil suction oil filter 5 and oil return oil filter 3 are installed respectively on the flowline of fuel tank 1 and the scavenge pipe.The oil return of 3 pairs of devices of oil suction oil filter 5 and oil return oil filter is filtered, and removes and sneaks into the impurity in the hydraulic oil, prevents to damage hydraulic part.
Stack one-way throttle valve 14 is installed on the pipeline of four-way change-over valve 12, and stack one-way throttle valve 14 guarantees that hydraulic pressure can carry out throttling by specified flow to mobile the time.
The technical scheme of the utility model is not restricted in the scope of the described embodiment of the utility model.The utility model not technology contents of detailed description is known technology.
Claims (10)
1. tractor hydraulic lifting test device; It is characterized in that: comprise fuel tank (1) and master cylinder (17); Be connected with scavenge pipe through flowline between fuel tank (1) and the master cylinder (17); Flowline and scavenge pipe are pipeline, and the one or six energising magnetic reversal valve (13) is set between fuel tank (1) and the master cylinder (17), between master cylinder (17) and the one or the six energising magnetic reversal valve (13) hydraulic lock (16) are set.
2. tractor hydraulic lifting test device according to claim 1 is characterized in that: between described master cylinder (17) and the one or the six energising magnetic reversal valve (13) ratio adjusting valve (15) is set, PMU is set on the pipeline.
3. tractor hydraulic lifting test device according to claim 1; It is characterized in that: between described fuel tank (1) and the master cylinder (17) two bypasses are set; A four-way change-over valve (12) is installed in each bypass; Four-way change-over valve (12) and the one or six is switched on parallelly connected between the magnetic reversal valve (13), and solenoid valve (24) is set between the oil pocket of master cylinder (17).
4. tractor hydraulic lifting test device according to claim 1; It is characterized in that: on the flowline of described fuel tank (1) and the scavenge pipe branch road is set; Branch road auxiliary connection oil cylinder (18) is provided with the two or six energising magnetic reversal valve (23) between fuel tank (1) and the auxiliary oil cylinder (18).
5. tractor hydraulic lifting test device according to claim 1 is characterized in that: electromagnetic relief valve (10) is set between the flowline of described fuel tank (1) and the return line.
6. tractor hydraulic lifting test device according to claim 1 is characterized in that: liquid level gauge (2), air cleaner (4) and/or liquid level relay (6) are set on the described fuel tank (1).
7. tractor hydraulic lifting test device according to claim 1 is characterized in that: temperature inductor (19) is set on the described pipeline.
8. tractor hydraulic lifting test device according to claim 2 is characterized in that: described PMU is pressure inductor (20) or first shock-proof pressure gauge (11).
9. tractor hydraulic lifting test device according to claim 8; It is characterized in that: described pressure inductor (20) connects second shock-proof pressure gauge (22), between pressure inductor (20) and second shock-proof pressure gauge (22) pressure meter switch (21) is set.
10. tractor hydraulic lifting test device according to claim 1 is characterized in that: ram pump (7) and retaining valve (9) are set on the flowline of described fuel tank (1), and ram pump (7) connects motor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222480 CN202631265U (en) | 2012-05-17 | 2012-05-17 | Tractor hydraulic hoisting test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222480 CN202631265U (en) | 2012-05-17 | 2012-05-17 | Tractor hydraulic hoisting test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631265U true CN202631265U (en) | 2012-12-26 |
Family
ID=47384456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220222480 Expired - Fee Related CN202631265U (en) | 2012-05-17 | 2012-05-17 | Tractor hydraulic hoisting test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352880B (en) * | 2013-07-30 | 2016-05-18 | 南通贝特医药机械有限公司 | For the hydraulic system of elevator |
| CN103978864B (en) * | 2014-04-30 | 2016-06-08 | 东风商用车有限公司 | A kind of twins lift bridge hydraulic lifting controls system |
-
2012
- 2012-05-17 CN CN 201220222480 patent/CN202631265U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352880B (en) * | 2013-07-30 | 2016-05-18 | 南通贝特医药机械有限公司 | For the hydraulic system of elevator |
| CN103978864B (en) * | 2014-04-30 | 2016-06-08 | 东风商用车有限公司 | A kind of twins lift bridge hydraulic lifting controls system |
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Legal Events
| 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 |
Granted publication date: 20121226 Termination date: 20170517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |