CN204324803U - A kind of novel hydraulic system of scissors lift bench - Google Patents

A kind of novel hydraulic system of scissors lift bench Download PDF

Info

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
Authority
CN
China
Prior art keywords
oil circuit
way valve
hydraulic
piston cylinder
oil
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.)
Active
Application number
CN201420754653.4U
Other languages
Chinese (zh)
Inventor
刘宝彦
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.)
NIULI MACHINERY MANUFACTURING Co Ltd
Original Assignee
NIULI MACHINERY MANUFACTURING 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 NIULI MACHINERY MANUFACTURING Co Ltd filed Critical NIULI MACHINERY MANUFACTURING Co Ltd
Priority to CN201420754653.4U priority Critical patent/CN204324803U/en
Application granted granted Critical
Publication of CN204324803U publication Critical patent/CN204324803U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

A kind of novel hydraulic system of scissors lift bench
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.
CN201420754653.4U 2014-12-03 2014-12-03 A kind of novel hydraulic system of scissors lift bench Active CN204324803U (en)

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

ID=53161183

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420754653.4U Active 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 (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN201442827U (en) Ultra-thin hydraulic lifter hydraulic system
CN104196806A (en) Synchronizing circuit of flow distributing and collecting valve for two-column gantry lifter
CN202673817U (en) High-efficiency energy-saving hydraulic system for petroleum snubbing device
CN204324803U (en) A kind of novel hydraulic system of scissors lift bench
CN205063484U (en) Fluid pressure type stereo garage liquid accuse system
CN104512833A (en) Novel hydraulic system of shear-mode lifting platform
CN204458573U (en) A kind of hydraulic system of electromagnetic priority valve durability test
CN207212799U (en) A kind of soft oil route controller of shearing type lifter
CN205918670U (en) Beat sign indicating number hydraulic press hydraulic control system
CN201793316U (en) Protective device of orange peel bucket hydraulic control system
CN204646826U (en) A kind of hydraulic system of hydraulic test bench
CN204127008U (en) A kind of two move back piston hydraulic pressure valve group and twoly move back piston hydraulic pressure device
CN207795710U (en) A kind of four road self-locking scissor platform power units
CN103644338B (en) Pressure regulator valve and there is the equilibrium valve assembly of this pressure regulator valve
CN202612248U (en) Combined-type hydraulic cylinder
CN204403007U (en) A kind of high three door frame oil circuits hoisted
CN202209327U (en) Connection mode of hydraulic distributor
CN203978977U (en) A kind of hydraulic system and hydraulic shear
CN104692254A (en) Crane secondary ascension downslide prevention system
CN202991681U (en) Drilling IBOP (internal blowout preventer) protection system
CN203176064U (en) Water base medium oil cylinder pressure test device
CN204704182U (en) A kind of CNG hydraulic substation reversing arrangement
CN203079620U (en) Brake control device and crane
CN203959756U (en) The forklift gantry pipeline system of a kind of pair of governor valve
CN111188572B (en) Automatic rapid pressurization control method for rotary drilling rig

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model