CN203161689U - Supporting leg and hydraulic system thereof and engineering machinery - Google Patents
Supporting leg and hydraulic system thereof and engineering machinery Download PDFInfo
- Publication number
- CN203161689U CN203161689U CN2013200283815U CN201320028381U CN203161689U CN 203161689 U CN203161689 U CN 203161689U CN 2013200283815 U CN2013200283815 U CN 2013200283815U CN 201320028381 U CN201320028381 U CN 201320028381U CN 203161689 U CN203161689 U CN 203161689U
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- CN
- China
- Prior art keywords
- supporting leg
- oil
- pump
- hydraulic system
- rod chamber
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
- B60S9/12—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure of telescopic type
Abstract
The utility model discloses a supporting leg, a hydraulic system of the supporting leg and engineering machinery. The hydraulic system of the supporting leg comprises a main oil pump, an oil tank, a supporting leg oil cylinder and a reversing valve controlling the stretchy motion of the supporting leg oil cylinder. The supporting leg oil cylinder comprises a cavity with a rod and a cavity without a rod. The reversing valve is connected between the main oil pump and the supporting leg oil cylinder. The hydraulic system of the supporting leg further comprises a manual pump. An inlet of the manual pump is connected with the oil tank. An outlet of the manual pump is connected with the cavity with the rod. The manual pump can pull the supporting leg oil cylinder back, so that hydraulic oil leakage caused by disassembly of a hydraulic pipeline is avoided, work efficiency is improved, an existing structure is slightly changed, and implementation is easy.
Description
Technical field
The utility model relates generally to engineering machinery field, specifically, relates to a kind of supporting leg hydraulic system, and the supporting leg and the engineering machinery that are provided with this hydraulic system.
Background technique
Supporting leg is as common parts on the engineering machinery such as truck crane, concrete mixer, Vehicle loaded pump, tank-transport truck.Supporting leg generally comprises outrigger arm and supporting leg, and outrigger arm is with respect to the swing of car body along continuous straight runs or telescopic moving, and supporting leg is positioned at the outrigger arm end, and can telescopic moving along the vertical direction under the driving of oil cylinder.
In the engineer machinery operation process, the oil cylinder of supporting leg stretches out and is supported on the ground, and complete machine is held up, and plays the effect of stablizing machine gravity.When the engineer machinery change field operation, the walking of engineering machinery is convenient in the withdrawal of the oil cylinder of supporting leg.
In the supporting leg hydraulic system of prior art, the oil cylinder of supporting leg is by oil pump feed, and this oil pump is by engine-driving.When in the course of the work, motor is in case when damaging the main shaft that can't drive oil pump and rotating, oil pump quits work, and supporting leg also namely can't be regained, and this project machinery that causes breaking down can't move, and must overhaul at the scene.
For mobile fault engineering machinery, experienced user often removes the hydraulic oil pipe of system, makes system unloaded, thereby supporting leg is regained.Regain supporting leg by removing oil pipe, not only caused the leakage of hydraulic oil, and delayed user's valuable time, operating efficiency is low, has brought great inconvenience to the client.
The model utility content
In view of this, the purpose of this utility model is to provide a kind of supporting leg hydraulic system, and this supporting leg hydraulic system can in time be regained oil cylinder when engine failure, avoid the leakage of hydraulic oil, and can raise the efficiency.
Supporting leg hydraulic system of the present utility model, the selector valve that comprises main oil pump, fuel tank, support oil cylinder, control support oil cylinder expanding-contracting action, described support oil cylinder comprises rod chamber and rodless cavity, described selector valve is connected between described main oil pump and the described support oil cylinder, and comprise hand pump, the import of described hand pump connects fuel tank, and described manual delivery side of pump connects described rod chamber.
Further, the oil circuit that exports to described rod chamber of described hand pump is provided with stop valve.
Further, the oil circuit that exports to described rod chamber of described hand pump is provided with one-way valve, and the import of described one-way valve connects manual delivery side of pump, and the outlet of described one-way valve connects described rod chamber.
Further, the oil circuit that exports to described rod chamber of described hand pump is provided with orifice plug.
Further, the quantity of described support oil cylinder is 2, and described manual delivery side of pump connects the rod chamber of 2 described support oil cylinders respectively by threeway.
Further, described selector valve is three six-way valves, can realize first state, second state and the third state, when described first state, and described rod chamber oil-feed, rodless cavity oil return; When described second state, described rodless cavity oil-feed, rod chamber oil return; When the described third state, the hydraulic oil of main oil pump flows to described fuel tank.
Further, also be connected with bidirectional hydraulic lock between described support oil cylinder and the described selector valve.
Further, described main oil pump also is provided with oil purifier or pressure gauge to the oil circuit between the described selector valve.
Another aspect of the present utility model also provides a kind of supporting leg, it is characterized in that, described supporting leg is provided with aforementioned each supporting leg hydraulic system.
Another aspect of the present utility model also provides a kind of engineering machinery, and described engineering machinery is provided with aforesaid supporting leg.
The utility model has increased auxiliary oil circuit at the working connection of supporting leg, can support oil cylinder be regained with hand pump when main oil pump can't be to the rod chamber fuel feeding.Compared with prior art, the utility model can avoid dismantling the hydraulic fluid leak that hydraulic pipe line brings, and can in time regain support oil cylinder, improves operating efficiency, is convenient to the transition maintenance.In addition, the utility model also has existing structure is changed advantages such as little, easy to implement.
Description of drawings
The accompanying drawing that constitutes a part of the present utility model is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not constitute improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the utility model one embodiment's supporting leg hydraulic system.
Description of reference numerals:
Main oil pump-1 fuel tank-2 support oil cylinder-3 selector valve-4 hand pump-5 stop valve-6 bidirectional hydraulic lock-7 oil purifier-8 pressure gauge-9
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment in the utility model can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Shown in Figure 1 is the schematic diagram of the utility model one embodiment's supporting leg hydraulic system.This embodiment's supporting leg hydraulic system comprises main oil pump 1, fuel tank 2, support oil cylinder 3, selector valve 4 and hand pump 5 at least.
Support oil cylinder 3 comprises rod chamber and rodless cavity, and during the rod chamber oil-feed, engineering machinery walking is convenient in support oil cylinder 3 withdrawals; During the rodless cavity oil-feed, support oil cylinder 3 stretches out, and the engineering machinery complete machine is held up, and plays the effect of stablizing center of gravity.The quantity of support oil cylinder 3 in the embodiment shown in fig. 1, has schematically shown 2 support oil cylinders 3 not in order to limit protection domain of the present utility model.This main oil pump 1 is by engine-driving, and rod chamber or rodless cavity from fuel tank 2 pump oil to support oil cylinder 3.
Selector valve 4 is connected between main oil pump 1 and the support oil cylinder 3, and is used for the expanding-contracting action of control support oil cylinder 3.Multiple possible selector valve 4 and combination all go for the utility model, and preferably this selector valve 4 is three six-way valves, can realize first state, second state and the third state, when first state, and rod chamber oil-feed, rodless cavity oil return; When second state, rodless cavity oil-feed, rod chamber oil return; When the third state, the hydraulic oil of main oil pump 1 flows to fuel tank 2.When the quantity of support oil cylinder 3 was 2, three six-way valves correspondingly also were provided with 2.
Hand pump 5 can use when main oil pump 1 is unusual to the rod chamber fuel feeding, and the import of hand pump 5 connects fuel tank 2, and the outlet of hand pump 5 connects rod chamber.The gear pump of various structures, plunger pump all go for the utility model.This hand pump 5 is arranged at handle, relies on and manually to shake the rod chamber that this handle namely can be from fuel tank 2 pump oil to support oil cylinder 3.This hand pump 5 can be from the fuel tank 2 of main oil pump 1 or external fuel tank 2 pump oil.At this moment, the hydraulic oil of rodless cavity through selector valve 4 oil returns to fuel tank 2.
This selector valve 4 can be the valve of electronic and manual one, when motor and electronic selector valve all break down, thereby makes selector valve 4 commutations make the rodless cavity oil return with manual mode.In addition, also manual two position two-way valve (or stop valve) can be set between rodless cavity and fuel tank, when selector valve 4 faults, can open this manual two position two-way valve, thereby make the rodless cavity oil return, and can make the rod chamber oil-feed by hand pump 5.
Stretched out at support oil cylinder 3, but because motor damages the main shaft can't drive main oil pump 1 rotates, thereby caused main oil pump 1 can't pump oil the time, this hand pump 5 can be regained support oil cylinder 3 fast in time, improves operating efficiency, is convenient to the transition maintenance.And this process also can avoid dismantling the hydraulic fluid leak that hydraulic pipe line brings.
When main oil pump 1 was working properly, this hand pump 5 can be in idle state.For the pressure oil of avoiding main oil pump 1 to pump enters hand pump 5, guarantee the normal flexible operation of support oil cylinder 3, the oil circuit that exports to rod chamber that can hand pump 5 is provided with stop valve 6, and stop valve 6 is selectively realized opening and cut-off state.When using this hand pump 5, regulate this stop valve 6 to open mode; When not using this hand pump 5, then regulate this stop valve 6 to cut-off state.
As another kind of mode of execution, the oil circuit that exports to rod chamber that can also hand pump 5 is provided with one-way valve, and the import of one-way valve connects the outlet of hand pump 5, and the outlet of one-way valve connects rod chamber.This one-way valve can guarantee hydraulic oil from hand pump 5 to the rod chamber one-way flow, avoided the pressure oil adverse current to hand pump 5, can guarantee the normal flexible operations of support oil cylinder 3 equally.
Further, the oil circuit that exports to rod chamber that can hand pump 5 is provided with the orifice plug (not shown in figure 1).By throttling and the damping function of this orifice plug, can guarantee that hydraulic oil slowly enters rod chamber, make the piston rod safe retraction, avoided the impact and the infringement that too soon cylinder body are caused because of mobile.
When the quantity of support oil cylinder 3 was 2, the outlet of hand pump 5 connected the rod chamber of 2 support oil cylinders 3 respectively by threeway.The hydraulic oil that same hand pump 5 pumps enters 2 support oil cylinders 3 simultaneously, and makes 2 support oil cylinders 3 withdraw synchronously.
Further, embodiment shown in Figure 1 also also is connected with bidirectional hydraulic lock 7 between support oil cylinder 3 and selector valve 4.This bidirectional hydraulic lock 7 can form back pressure at rod chamber and the rodless cavity of support oil cylinder 3, thereby plays the safety protection effect.During greater than the cracking pressure of bidirectional hydraulic lock 7, rodless cavity begins oil return at the input pressure of rod chamber; Similarly, during greater than the cracking pressure of bidirectional hydraulic lock 7, rod chamber begins oil return at the input pressure of rodless cavity.
In addition, to the oil circuit between the selector valve 4, also be provided with oil purifier 8 or pressure gauge 9 at main oil pump 1.Oil purifier 8 can guarantee the turbidity test of the hydraulic oil in this hydraulic system, and pressure gauge 9 is for detection of the hydraulic fluid pressure on this oil circuit.
Except aforementioned supporting leg hydraulic system, the utility model also provides a kind of supporting leg, and this supporting leg is provided with the supporting leg hydraulic system of previous embodiment.This supporting leg comprises supporting leg, and this supporting leg is driven the telescopic moving of its above-below direction by aforementioned support oil cylinder 3.This supporting leg can also comprise outrigger arm, and this outrigger arm can be with respect to the swing of car body along continuous straight runs or the telescopic moving of engineering machinery, and supporting leg can be positioned at the outrigger arm end.
Further, the utility model also provides a kind of engineering machinery that is provided with aforementioned supporting leg.Other structure of this project machinery can be with reference to prior art, and this paper does not repeat them here.This project machinery can be provided with the equipment of supporting leg for truck crane, concrete mixer, Vehicle loaded pump, tank-transport truck etc.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. supporting leg hydraulic system, the selector valve (4) that comprises main oil pump (1), fuel tank (2), support oil cylinder (3), control support oil cylinder (3) expanding-contracting action, described support oil cylinder (3) comprises rod chamber and rodless cavity, described selector valve (4) is connected between described main oil pump (1) and the described support oil cylinder (3), it is characterized in that, also comprise hand pump (5), the import of described hand pump (5) connects fuel tank (2), and the outlet of described hand pump (5) connects described rod chamber.
2. supporting leg hydraulic system according to claim 1 is characterized in that, the oil circuit that exports to described rod chamber of described hand pump (5) is provided with stop valve (6).
3. supporting leg hydraulic system according to claim 1, it is characterized in that, the oil circuit that exports to described rod chamber of described hand pump (5) is provided with one-way valve, and the import of described one-way valve connects the outlet of hand pump (5), and the outlet of described one-way valve connects described rod chamber.
4. supporting leg hydraulic system according to claim 1 is characterized in that, the oil circuit that exports to described rod chamber of described hand pump (5) is provided with orifice plug.
5. supporting leg hydraulic system according to claim 1 is characterized in that, the quantity of described support oil cylinder (3) is 2, and the outlet of described hand pump (5) connects the rod chamber of 2 described support oil cylinders (3) respectively by threeway.
6. according to each described supporting leg hydraulic system of claim 1-5, it is characterized in that described selector valve (4) is three six-way valves, can realize first state, second state and the third state, when described first state, described rod chamber oil-feed, rodless cavity oil return; When described second state, described rodless cavity oil-feed, rod chamber oil return; When the described third state, the hydraulic oil of main oil pump (1) flows to described fuel tank (2).
7. according to each described supporting leg hydraulic system of claim 1-5, it is characterized in that, also be connected with bidirectional hydraulic lock (7) between described support oil cylinder (3) and the described selector valve (4).
8. according to each described supporting leg hydraulic system of claim 1-5, it is characterized in that described main oil pump (1) also is provided with oil purifier (8) or pressure gauge (9) to the oil circuit between the described selector valve (4).
9. a supporting leg is characterized in that, described supporting leg is provided with each described supporting leg hydraulic system of claim 1-8.
10. an engineering machinery is characterized in that, described engineering machinery is provided with the described supporting leg of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200283815U CN203161689U (en) | 2013-01-18 | 2013-01-18 | Supporting leg and hydraulic system thereof and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200283815U CN203161689U (en) | 2013-01-18 | 2013-01-18 | Supporting leg and hydraulic system thereof and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161689U true CN203161689U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200283815U Expired - Fee Related CN203161689U (en) | 2013-01-18 | 2013-01-18 | Supporting leg and hydraulic system thereof and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161689U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587509A (en) * | 2013-11-21 | 2014-02-19 | 三一汽车制造有限公司 | Supporting leg and pump truck |
| CN104632735A (en) * | 2014-12-09 | 2015-05-20 | 长沙中联消防机械有限公司 | Telescopic control system and method for support oil cylinders and mechanical equipment |
| CN112196850A (en) * | 2020-09-30 | 2021-01-08 | 三一汽车制造有限公司 | Support leg hydraulic system, work vehicle and control method |
| EP4001027A1 (en) * | 2020-11-24 | 2022-05-25 | Frank Paul Grooters | Hydraulic system for a vehicle or a container and vehicle or container with such a hydraulic system |
| NL2028179B1 (en) * | 2021-05-10 | 2022-11-24 | Power Packer North America Inc | Recreational vehicle leveling system. |
-
2013
- 2013-01-18 CN CN2013200283815U patent/CN203161689U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587509A (en) * | 2013-11-21 | 2014-02-19 | 三一汽车制造有限公司 | Supporting leg and pump truck |
| CN103587509B (en) * | 2013-11-21 | 2016-04-06 | 三一汽车制造有限公司 | A kind of supporting leg and pump truck |
| CN104632735A (en) * | 2014-12-09 | 2015-05-20 | 长沙中联消防机械有限公司 | Telescopic control system and method for support oil cylinders and mechanical equipment |
| CN112196850A (en) * | 2020-09-30 | 2021-01-08 | 三一汽车制造有限公司 | Support leg hydraulic system, work vehicle and control method |
| EP4001027A1 (en) * | 2020-11-24 | 2022-05-25 | Frank Paul Grooters | Hydraulic system for a vehicle or a container and vehicle or container with such a hydraulic system |
| WO2022111963A1 (en) * | 2020-11-24 | 2022-06-02 | Frank Paul Grooters | Hydraulic system for a vehicle or a container, and vehicle or container having such a hydraulic system |
| NL2028179B1 (en) * | 2021-05-10 | 2022-11-24 | Power Packer North America Inc | Recreational vehicle leveling 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: 20130828 Termination date: 20170118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |