CN204324803U - A kind of novel hydraulic system of scissors lift bench - Google Patents
A kind of novel hydraulic system of scissors lift bench Download PDFInfo
- Publication number
- CN204324803U CN204324803U CN201420754653.4U CN201420754653U CN204324803U CN 204324803 U CN204324803 U CN 204324803U CN 201420754653 U CN201420754653 U CN 201420754653U CN 204324803 U CN204324803 U CN 204324803U
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- China
- Prior art keywords
- oil circuit
- way valve
- piston cylinder
- hydraulic
- oil
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- Expired - Fee Related
Links
- 239000002828 fuel tank Substances 0.000 claims abstract description 8
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of novel hydraulic system of scissors lift bench, comprise Hydraulic Pump and two-position four-way valve, two-position four-way valve is connected with first, second, third and fourth oil circuit, wherein the first oil circuit and Hydraulic Pump connect and compose in-line, second oil circuit and fuel tank connect and compose oil return line, described 3rd oil circuit is connected with the large chamber of piston cylinder, 4th oil circuit is connected with the loculus of piston cylinder, 3rd oil circuit is also provided with hydraulic control one-way valve between two-position four-way valve and piston cylinder, and the oil circuit control of described hydraulic control one-way valve is communicated with described 4th oil circuit.The utility model has the piston rod when oil circuit breaks and can not naturally fall, and piston cylinder loculus is in the stable feature of lubricating status sealing effectiveness, without corresponding potential safety hazard.
Description
Technical field
The utility model relates to a kind of novel hydraulic system of scissors lift bench.
Background technology
Scissors lift bench is also called hydraulic jack or shearing type lifter, and it drives lifting by hydraulic efficiency pressure system, plays vital effect keeping in repair in particularly vehicle maintenance and repair maintenance.Shown in Figure 1, in conventional art, the hydraulic efficiency pressure system of scissors lift bench comprises Hydraulic Pump 1 ', at Hydraulic Pump 1 ' upper connection in-line 2 ', in-line 2 ' is provided with check valve 3 ', described in-line 2 ' is connected with the vat 41 ' of piston cylinder 4 ', in-line 2 ' is also connected with fuel-displaced branch road 5 ', fuel-displaced branch road 5 ' is provided with two one logical valves 6 ', when hydraulic pump works, fluid enters into vat 41 ' implementation platform through in-line 2 ' and hoists, when needs decline platform, open two one logical valves 6 ', fluid in vat 41 ' is back to oil cylinder from fuel-displaced branch road 5 ', but there are two defects in this one-way hydraulic system: first, when oil circuit breaks, piston rod can fall by nature, the second, owing to being in without oil condition in the loculus 42 ' of piston cylinder, unlubricated, heating seriously easily causes seal failure.These two defects belong to two potential safety hazards, for this reason, for eliminating this two potential safety hazards, are necessary improve the hydraulic efficiency pressure system of traditional scissors lift bench and optimize.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of novel hydraulic system of scissors lift bench, there is the piston rod when oil circuit breaks can not naturally fall, and piston cylinder loculus is in the stable feature of lubricating status sealing effectiveness, without corresponding potential safety hazard.
The utility model solves the technical scheme that its technical matters adopts:
A kind of novel hydraulic system of scissors lift bench, comprise Hydraulic Pump and two-position four-way valve, two-position four-way valve is connected with first, second, third and fourth oil circuit, wherein the first oil circuit and Hydraulic Pump connect and compose in-line, second oil circuit and fuel tank connect and compose oil return line, described 3rd oil circuit is connected with the large chamber of piston cylinder, 4th oil circuit is connected with the loculus of piston cylinder, 3rd oil circuit is also provided with hydraulic control one-way valve between two-position four-way valve and piston cylinder, and the oil circuit control of described hydraulic control one-way valve is communicated with described 4th oil circuit.
As the improvement of technique scheme, Hydraulic Pump is unidirectional quantitative hydraulic pump.
As the further improvement of technique scheme, described first oil circuit is provided with check valve.
Further, by pass valve is connected with between described first oil circuit, the second oil circuit.
Further, described first oil circuit is connected with shutoff valve.
The beneficial effects of the utility model are: the utility model adopting said structure, by arranging hydraulic control one-way valve on the 3rd oil circuit connecting the large chamber of piston cylinder and two-position four-way valve, the 4th oil circuit that the oil circuit control of hydraulic control one-way valve is connected with same piston cylinder loculus and two-position four-way valve connects, when making hydraulic work system described in the utility model, fuel charger work fluid enters the large chamber of piston cylinder by two-position four-way valve through hydraulic control one-way valve, implementation platform hoists, fluid now in loculus flows back to fuel tank through two-position four-way valve, decline to platform, manipulation two-position four-way valve enters the second bar position, make the oil-feed of piston cylinder loculus, oil circuit control opens hydraulic control one-way valve, the oil in large chamber is made to flow back to fuel tank, implementation platform declines, when inoperation hydraulic control one-way valve, oil in large chamber is by choke-out, thus can guarantee that platform safety is parked in a certain position, now if do not given loculus fuel feeding, then hydraulic control one-way valve is not opened, oil in large chamber is still just by choke-out, which achieves the safety of whole working process, well solve two potential safety hazards that conventional hydraulic is brought, there is structure simple, the features such as implementation cost is low, and safety is good.
Accompanying drawing explanation
Fig. 1 is conventional hydraulic constructional drawing;
Fig. 2 is hydraulic system structure figure of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing and enforcement, the utility model is described in further detail.
With reference to Fig. 2, the novel hydraulic system of a kind of scissors lift bench of the present utility model, comprise Hydraulic Pump 1 and two-position four-way valve 2, two-position four-way valve 2 is connected with first, two, three, four oil circuits 3, 4, 5, 6, wherein the first oil circuit 3 connects and composes in-line with Hydraulic Pump 1, second oil circuit 4 connects and composes oil return line with fuel tank, described 3rd oil circuit 5 is connected with the large chamber 71 of piston cylinder 7, 4th oil circuit 6 is connected with the loculus 72 of piston cylinder 7, 3rd oil circuit 5 is also provided with hydraulic control one-way valve 8 between two-position four-way valve 2 and piston cylinder 7, the oil circuit control 81 of described hydraulic control one-way valve 8 is communicated with described 4th oil circuit 6.
In the present embodiment, preferred Hydraulic Pump 1 is unidirectional quantitative hydraulic pump.
In the present embodiment, for avoiding the fluid in the first oil circuit 3 to reflux, check valve 31 can be provided with on described first oil circuit 3.
In order to avoid, oil liquid pressure is excessive to be impacted oil circuit, can be connected with by pass valve 9 between described first oil circuit 3, second oil circuit 4.
For making a Hydraulic Pump can for multiple system, shutoff valve 10 can be connected with on described first oil circuit, when the Hydraulic Pump in native system need to be connected with other system use time, other system is communicated with shutoff valve 10 place oil circuit, open shutoff valve simultaneously, convenient and swift, structure is simple.
Adopt the utility model of said structure, by arranging hydraulic control one-way valve 8 on the 3rd oil circuit 5 in the large chamber 71 and two-position four-way valve 2 that connect piston cylinder 7, the 4th oil circuit 6 that the oil circuit control 81 of hydraulic control one-way valve 8 is connected with same piston cylinder loculus 72 and two-position four-way valve 2 connects, when making hydraulic work system described in the utility model, fuel charger 1 fluid that works enters the large chamber 71 of piston cylinder by two-position four-way valve 2 through hydraulic control one-way valve 8, implementation platform hoists, fluid now in loculus 72 flows back to fuel tank through two-position four-way valve 2, decline to platform, manipulation two-position four-way valve 2 enters the second bar position, make piston cylinder loculus 72 oil-feed, oil circuit control 81 opens hydraulic control one-way valve 8, the oil in large chamber 71 is made to flow back to fuel tank, implementation platform declines, when inoperation hydraulic control one-way valve 8, oil in large chamber 71 is by choke-out, thus can guarantee that platform safety is parked in a certain position, now if do not given loculus 72 fuel feeding, then hydraulic control one-way valve 8 is not opened, oil in large chamber 71 is still just by choke-out, which achieves the safety of whole working process, well solve two potential safety hazards that conventional hydraulic is brought, there is structure simple, the features such as implementation cost is low, and safety is good.
The above, just better embodiment of the present utility model, but the utility model is not limited to above-described embodiment, as long as it reaches technique effect of the present utility model with any same or similar means, all should fall within protection domain of the present utility model.
Claims (5)
1. the novel hydraulic system of a scissors lift bench, it is characterized in that: comprise Hydraulic Pump and two-position four-way valve, two-position four-way valve is connected with first, second, third and fourth oil circuit, wherein the first oil circuit and Hydraulic Pump connect and compose in-line, second oil circuit and fuel tank connect and compose oil return line, described 3rd oil circuit is connected with the large chamber of piston cylinder, 4th oil circuit is connected with the loculus of piston cylinder, 3rd oil circuit is also provided with hydraulic control one-way valve between two-position four-way valve and piston cylinder, and the oil circuit control of described hydraulic control one-way valve is communicated with described 4th oil circuit.
2. the novel hydraulic system of a kind of scissors lift bench according to claim 1, is characterized in that: Hydraulic Pump is unidirectional quantitative hydraulic pump.
3. the novel hydraulic system of a kind of scissors lift bench according to claim 2, is characterized in that: described first oil circuit is provided with check valve.
4. the novel hydraulic system of a kind of scissors lift bench according to claim 3, is characterized in that: be connected with by pass valve between described first oil circuit, the second oil circuit.
5. the novel hydraulic system of a kind of scissors lift bench according to claim arbitrary in claim 1 ~ 4, is characterized in that: described first oil circuit is connected with shutoff valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420754653.4U CN204324803U (en) | 2014-12-03 | 2014-12-03 | A kind of novel hydraulic system of scissors lift bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420754653.4U CN204324803U (en) | 2014-12-03 | 2014-12-03 | A kind of novel hydraulic system of scissors lift bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204324803U true CN204324803U (en) | 2015-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420754653.4U Expired - Fee Related CN204324803U (en) | 2014-12-03 | 2014-12-03 | A kind of novel hydraulic system of scissors lift bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204324803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512833A (en) * | 2014-12-03 | 2015-04-15 | 牛力机械制造有限公司 | Novel hydraulic system of shear-mode lifting platform |
| CN109899331A (en) * | 2019-03-22 | 2019-06-18 | 宁波中天海德液压有限公司 | Self-balancing hydraulic lifting support device and its application |
-
2014
- 2014-12-03 CN CN201420754653.4U patent/CN204324803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512833A (en) * | 2014-12-03 | 2015-04-15 | 牛力机械制造有限公司 | Novel hydraulic system of shear-mode lifting platform |
| CN109899331A (en) * | 2019-03-22 | 2019-06-18 | 宁波中天海德液压有限公司 | Self-balancing hydraulic lifting support device and its application |
| CN109899331B (en) * | 2019-03-22 | 2024-04-12 | 宁波中天海德液压有限公司 | Self-balancing hydraulic lifting supporting device and application thereof |
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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: 20150513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |