CN107939759B - A kind of non-differential driver's cabin twin-tub hoisting system - Google Patents
A kind of non-differential driver's cabin twin-tub hoisting system Download PDFInfo
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- CN107939759B CN107939759B CN201711362230.2A CN201711362230A CN107939759B CN 107939759 B CN107939759 B CN 107939759B CN 201711362230 A CN201711362230 A CN 201711362230A CN 107939759 B CN107939759 B CN 107939759B
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- mouthfuls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention discloses a kind of non-differential driver's cabin twin-tub hoisting systems, belong to heavy truck wheelhouse tipping system, it solves the problems, such as not arranging twin-tub hoisting system for certain driver's cabins, the purpose that driver's cabin twin-tub hoisting system drops this, drops weight is realized simultaneously, the hoisting system, it is characterised in that it includes being made of 1 master cylinder assembly, 1 auxiliary oil cylinder and 1 manual pump assembly；There is mandril in master cylinder；Mandril is fixed with piston, and mandril is located in rodless cavity, and the axis rodless cavity axis of mandril is overlapped；Mandril front end is circular conical surface；Push rod can cooperate with mandril front end, and push rod is compressed push rod compression strap movable valve plug compressed spring to spool direction, separates the spool conical surface with the valve body conical surface, makes B mouthfuls to be in connected state with A mouthfuls；The system is not limited by driver's cabin arrangement space, and versatility is good, moreover, it is light-weight, it is at low cost.
Description
Technical field
The invention belongs to heavy truck wheelhouse tipping systems, are related to a kind of non-differential driver's cabin twin-tub hoisting system, are applied to
Heavy truck driver's cabin twin-tub hoisting system.
Background technique
If at present heavy automobile cab using twin-tub hoisting system when mostly use differential hoisting system, the hoisting system
Oil cylinder cylinder diameter is larger, at high cost, and weight is big.The difference of this large-diameter can not be carried out since space limits for certain driver's cabins
The arrangement of dynamic elevating ram.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of non-differential driver's cabin twin-tub hoisting systems, solve to Mr. Yu
The problem of a little driver's cabins can not arrange twin-tub hoisting system, while realizing the mesh that driver's cabin twin-tub hoisting system drops this, drops weight
's.
The technical scheme is that a kind of non-differential driver's cabin twin-tub hoisting system, which is characterized in that including by 1
Master cylinder assembly, 1 auxiliary oil cylinder and 1 manual pump assembly composition；Master cylinder assembly is mainly by oil cylinder and fluid-control one-way valve group
At；There is mandril in master cylinder；Mandril is fixed with piston, and mandril is located in rodless cavity, and the axis rodless cavity axis of mandril is overlapped；
Mandril front end is circular conical surface；Hydraulic control one-way valve is mainly made of spring, spool, valve body, push rod, spool, valve body taper-face contact, bullet
Spring is located at spool rear end；Push rod is fixedly connected with spool, and push rod is stretched out from valve body, and the height of push rod front end is higher than mandril circular conical surface
Lower limit, so that push rod and mandril front end is cooperated, push rod compressed to spool direction；Push rod compression strap movable valve plug compresses bullet
Spring separates the spool conical surface with the valve body conical surface, makes B mouthfuls to be in connected state with A mouthfuls；High pressure oil from when C mouthfuls of entrance, B mouthfuls with A mouthfuls
In connected state；Manual pump assembly is mainly made of reversal valve, manual pump；Reversal valve is three position four-way directional control valve, there is three
A operating position, when the spool of reversal valve is in I, P1 mouthfuls are connected to P2 mouthfuls, and P3 mouthfuls are connected to P4 mouthfuls；Spool is in II
When, P1 mouthfuls of cut-offs, P2 mouthfuls, P3 mouthfuls, three mouthfuls of P4 mouth connections；When spool is in III, P1 mouthfuls are connected to P4 mouthfuls, P3 mouthfuls and P2 mouthfuls of companies
It is logical；Manual pump oiler is connected to fuel tank, the P1 mouth of the oil outlet connection reversal valve of manual pump；The C mouth of hydraulic control one-way valve, which connects, to be connected
Logical master cylinder rod chamber and auxiliary oil cylinder rod chamber；The B mouth connection master cylinder rodless cavity and auxiliary oil cylinder rodless cavity of hydraulic control one-way valve；It changes
Manual pump oil outlet, the A mouth of the P2 mouth connection hydraulic control one-way valve of reversal valve are connected to the P1 mouth of valve；The P3 mouth of reversal valve is connected to oil
Case；The P4 mouth connection master cylinder rod chamber and auxiliary oil cylinder rod chamber of reversal valve.
Preferably, when reversal valve is in II, while the mandril in master cylinder assembly compresses push rod state, so that liquid
The A mouth of control check valve is connected to B mouthfuls；The supplement process of oil liquid is as follows: the oil liquid in master cylinder rod chamber and auxiliary oil cylinder rod chamber
It after the P4 mouth for reaching reversal valve by pipeline, is returned in fuel tank through P3 mouthfuls, while the oil liquid in fuel tank passes through successively reversal valve P3
Mouth, P2 mouthfuls, the A mouth through hydraulic control one-way valve arrive separately in master cylinder rodless cavity and auxiliary oil cylinder rodless cavity with B mouthfuls.
Preferably, when reversal valve is in II, while the mandril in master cylinder assembly compresses push rod state, so that liquid
The A mouth of control check valve is connected to B mouthfuls；The supplement process of oil liquid is as follows: the oil liquid in master cylinder rodless cavity and auxiliary oil cylinder rodless cavity
The B mouth for reaching hydraulic control one-way valve together by pipeline is flowed out from A mouthfuls, P2 mouth through reversal valve, P3 mouthfuls return in fuel tank；Simultaneously
Oil liquid in fuel tank can pass sequentially through the P3 mouth of reversal valve, P4 mouthfuls, arrive separately at master cylinder rod chamber and auxiliary oil cylinder by pipeline
In rod chamber.
Preferably, when driving, driver's cabin is in falling state, and reversal valve is rotated to II.
Preferably, after falling driver's cabin, that is, cylinder piston rod withdrawal after rise, the mandril of master cylinder assembly is in compression hydraulic control
The state of unidirectional valve follower.
Preferably, rodless cavity is located in the mandril directed cavity of master cylinder left end, which is also asphalt channel.
Preferably, hydraulic control one-way valve further includes valve deck composition.
Preferably, manual pump assembly further includes safety valve, and safety valve is overflow valve, and oil outlet is connected to fuel tank, oiler
Connect manual pump oil outlet.
Preferably, master cylinder, auxiliary oil cylinder piston rod act on driver's cabin.
Preferably, master cylinder, auxiliary oil cylinder are non-differential cylinder, can be using common oil cylinder.
The principle of the present invention is:
The present invention is using the master cylinder of 1 non-differential lifting, 1 non-differential lifting auxiliary oil cylinder and 1 and double oil cylinder phases
Matched manual pump is constituted.
Wherein, master cylinder is mainly made of oil cylinder with the hydraulic control one-way valve with push rod；Manual pump is mainly by pump, safety
Valve, three position four-way directional control valve, fuel tank composition.The lifting of oil cylinder may be implemented by manually controlling three position four-way directional control valve, pull back
It is converted with road location.
Twin-tub uses parallel-connection structure.When lifting, reversal valve is got into lift location, high pressure oil is distinguished by hydraulic control one-way valve
To double oil cylinder rodless cavities for high pressure oil, the rod chamber oil liquid of double oil cylinders passes through reversal valve oil return；When pulling back, reversal valve is got to back
Position is drawn, respectively to double cylinder rod chambers for high pressure oil, double oil cylinder rodless cavity oil liquid pass through hydraulic control one-way valve and reversal valve returns
Oil；When driving, reversal valve is got into road location, at this point, double cylinder upper cavity oils are directly connected to fuel tank by reversal valve, double oil cylinders
Cavity of resorption is linked together by hydraulic control one-way valve, then is connected through hydraulic control one-way valve, reversal valve and fuel tank, the design of main oil cylinder piston end
There is mandril, under driving states, mandril presses the push rod of hydraulic control one-way valve always, in this way, the push rod of hydraulic control one-way valve just begins
Make hydraulic control one-way valve in the open state eventually, so that double oil cylinder rodless cavities are connected by hydraulic control one-way valve, reversal valve and fuel tank
Logical, oil cylinder under driving states can be realized can be with driver's cabin free floating.
The solution have the advantages that: the present invention can match any wheelhouse tipping lifted using twin-tub in heavy truck
In system, not limited by driver's cabin arrangement space, versatility is good, moreover, it is light-weight, it is at low cost.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Fig. 2 is the hydraulic control one-way valve with push rod and its work relationship schematic diagram with master cylinder of the invention.
Fig. 3 is three-position four-way valve schematic diagram of the invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1, a kind of non-differential driver's cabin twin-tub hoisting system of the present invention, mainly by the main oil of 1 non-differential lifting
Cylinder assembly 1,1 non-differential lifting auxiliary oil cylinder assembly 7 and 1 manual pump assembly 10 to match with double oil cylinders form.Main oil
Cylinder assembly 1 and auxiliary oil cylinder assembly 7 are parallel-connection structure, i.e. the oil at the oily both ends of the pair of the master cylinder of master cylinder assembly and auxiliary oil cylinder assembly
Road is connection respectively.
Referring to Fig. 1, Fig. 2, master cylinder assembly 1 is mainly made of oil cylinder 17 and hydraulic control one-way valve 2, and hydraulic control one-way valve 2 is main
It is formed by by spring 14, spool 15, valve body 16, push rod 19, design has mandril 18 in master cylinder 17.Mandril 18 is fixed with piston,
And mandril is located in rodless cavity, (rodless cavity is located at master cylinder left end, has mandril guiding for the axis rodless cavity axis coincidence of mandril
Chamber, the directed cavity are also asphalt channel).18 front end of mandril is circular conical surface.
Push rod 19 is fixedly connected with spool 15, and push rod 19 is stretched out from valve body, and the height of 19 front end of push rod is higher than the circle of mandril 18
The lower limit of the conical surface (lower limit is parallel with the axial direction of push rod)；Push rod 19 and mandril 18 is set to cooperate, by push rod 19 to spool
Direction compression.
Further, hydraulic control one-way valve 2 is made of valve deck 13, spring 14, spool 15, valve body 16, push rod 19, and 14, spring
In 15 lower end of spool；The conical surface of spool 15 and tapered (the A mouthfuls and B mouthfuls) channel of valve body pass through taper-face contact；19 compression strap of push rod
15 compressed spring of movable valve plug, 15 conical surface of spool are separated with the valve body conical surface, and B mouthfuls are in connected state with A mouthfuls；High pressure oil from C mouthfuls into
Fashionable, spool 15 can be pushed away the conical surface of valve body 16 by high pressure oil, so that A mouthfuls are in connected state with B mouthfuls.
Process is as follows in detail: when mandril 18 and push rod 19 contact, the meeting pressure-ram 19 of mandril 18, push rod 19 can overcome
The elastic force of spring 14 opens spool 15, so that B mouthfuls are in connected state with A mouthfuls always；When mandril 18 and push rod 19 disengage
When, if high pressure oil enters from B mouthfuls, high pressure oil will push spool 15, so that B mouthfuls are in connected state with A mouthfuls, into B oral fluid pressure
Oil can be flowed out from A mouthfuls；When mandril 18 and push rod 19 disengage, for high pressure oil from when A mouthfuls of entrance, spool 15 can be by high pressure oil pressure
On the conical surface of valve body 16, so that A mouthfuls are in disconnected state with B mouthfuls；When mandril 18 and push rod 19 disengage, oil liquid from
A mouthfuls of entrance, if spool 15 can be pushed away the conical surface of valve body 16 by high pressure oil at this point, the high pressure oil of control oil circuit is from when C mouthfuls of entrance,
So that A mouthfuls are in connected state with B mouthfuls, the oil liquid entered in this way from A mouthfuls will be flowed out from B mouthfuls.
Referring to Fig. 1, Fig. 3, manual pump assembly 10 is mainly made of three position four-way directional control valve 8, safety valve 11, manual pump 12.
Three position four-way directional control valve 8 is there are three operating position, and when the spool of reversal valve 8 is in I, P1 mouthful are connected to P2 mouthfuls, P3 mouthfuls and
P4 mouthfuls of connections；When spool is in II, P1 mouthfuls of cut-offs, P2 mouthfuls, P3 mouthfuls, three mouthfuls of P4 mouth connections；Spool be in III when, P1 mouthful and
P4 mouthfuls of connections, P3 mouthfuls are connected to P2 mouthfuls.Wherein I is lift location, and II is road location, and III is position of pulling back.
12 oiler of manual pump is connected to fuel tank 9, and oil outlet connects the P1 mouth of reversal valve 8.
Safety valve 11 is overflow valve, and oil outlet is connected to fuel tank 9, and oiler connects 12 oil outlet of manual pump.
The C mouth of hydraulic control one-way valve 2 connects master cylinder rod chamber 4 and auxiliary oil cylinder rod chamber 6.
The B mouth connection master cylinder rodless cavity 3 and auxiliary oil cylinder rodless cavity 5 of hydraulic control one-way valve 2.
The P1 mouth of reversal valve 8 is connected to 12 oil outlet of manual pump, the A mouth of the P2 mouth connection hydraulic control one-way valve 2 of reversal valve 8；It changes
Fuel tank 9 is connected to the P3 mouth of valve 8；The P4 mouth connection master cylinder rod chamber 4 and auxiliary oil cylinder rod chamber 6 of reversal valve 8.
The course of work is as follows:
Mandril 18 referring to Fig. 1,2,3, when lifting driver's cabin, that is, releasing cylinder piston rod, in master cylinder assembly 1
It is in contact condition with push rod 19, the A mouth of hydraulic control one-way valve 2 is connected to B mouthfuls, and the 3-position 4-way on manual pump assembly 10 is commutated
Valve 8 is rotated to I, manipulates manual pump 12, high pressure oil will by the P1 mouth of reversal valve 8, P2 mouthfuls and hydraulic control one-way valve 2 B mouth,
A mouthfuls arrive separately at (master cylinder assembly 1) master cylinder rodless cavity 3 and (auxiliary oil cylinder assembly 7) auxiliary oil cylinder rodless cavity 5 by pipeline
In, so that cylinder piston rod is released (super right end is released), and the hydraulic oil in master cylinder rod chamber 4 and auxiliary oil cylinder rod chamber 6 then can
After being converged together by pipeline, returned in the fuel tank 9 in manual pump assembly 10 by the P4 mouth of reversal valve 8, P3 mouthfuls.It was lifting
Cheng Zhong, when the mandril 18 in master cylinder assembly 1 is in push rod 19 to be disengaged, the high pressures of B mouthfuls of entrance in hydraulic control one-way valve 2
Oil can be opened spool 15 (spool moves downward), and oil liquid can arrive separately at (master cylinder assembly 1) master cylinder rodless cavity 3 from A mouthfuls
In (auxiliary oil cylinder assembly 7) auxiliary oil cylinder rodless cavity 5, the hydraulic oil oil return in master cylinder rodless cavity 3 and auxiliary oil cylinder rodless cavity 5 is same
It is upper described, in this way, lifting movement can be realized.
Referring to Fig. 1,2,3, driver's cabin of pulling back, that is, the mandril 18 when withdrawing cylinder piston rod, in master cylinder assembly 1
It is in separating contacting state with push rod 19, the three position four-way directional control valve 8 on manual pump assembly 10 is rotated to III, manipulation is manual
Pump 12, high pressure oil will arrive separately at master cylinder assembly 1 and auxiliary oil cylinder assembly 7 by pipeline by the P1 mouth of reversal valve 8, P4 mouthfuls
Rod chamber 4 and 6 in, while reaching in hydraulic control one-way valve 2 C mouthfuls, spool 15 can be opened by reaching C mouthful of high pressure oil so that A mouthfuls with
B mouthfuls of connections, in this way, the high pressure oil reached in the rod chamber 4 and 6 of master cylinder assembly 1 and auxiliary oil cylinder assembly 7 can make cylinder piston rod
Retract, and rodless cavity 3 and the hydraulic oil in 5 can then be converged by pipeline together with after, A mouth through hydraulic control one-way valve 2, B mouthfuls, commutate
The P2 mouth of valve 8, P3 mouthfuls return in the fuel tank 9 in manual pump assembly 10, can both realize the movement of pulling back of oil cylinder in this way.Driver's cabin returns
Fall behind, the mandril 18 and push rod 19 in master cylinder assembly 1 are in contact condition, so that the A mouth of hydraulic control one-way valve 2 is connected to B mouthfuls.
It, will be on manual pump assembly 10 after falling driver's cabin after rise, that is, after withdrawing cylinder piston rod referring to Fig. 1,2,3
The rotation of three position four-way directional control valve 8 is to II (while the mandril 18 in master cylinder assembly 1 and push rod 19 are in compressive state), at once
Truck position.When driving, driver's cabin can be vibrated up and down with vehicle, and oil cylinder piston allows for carrying out with driver's cabin
Lower floating.Oil cylinder piston floats, oil cylinder piston is floated downward, and the supplement process of oil liquid is as follows:
When needing oil cylinder piston to float, i.e., when piston rod pulls out, 4 He of rod chamber of master cylinder assembly 1 and auxiliary oil cylinder assembly 7
After oil liquid in rod chamber 6 reaches the P4 mouth of reversal valve 8 by pipeline together, the fuel tank 9 of manual pump assembly 10 is returned to through P3 mouthfuls
In, in addition, since the mandril 18 in master cylinder assembly 1 is in compressive state with push rod 19, so that the A mouth and B of hydraulic control one-way valve 2
Mouthful connection, thus oil liquid in fuel tank 9 simultaneously can by P3 mouth of reversal valve 8, P2 mouthfuls, A mouth through hydraulic control one-way valve 2 with B mouthfuls
In the rodless cavity 3 and rodless cavity 5 for arriving separately at master cylinder assembly 1 and auxiliary oil cylinder assembly 7, the supplement of oil liquid is completed, completes oil cylinder
Piston floats.
When needing oil cylinder piston to float downward, i.e., when piston rod is pressed into, at the mandril 18 and push rod 19 in master cylinder assembly 1
In contact condition, so that the A mouth of hydraulic control one-way valve 2 is connected to B mouthfuls, 3 He of rodless cavity of master cylinder assembly 1 and auxiliary oil cylinder assembly 7
Oil liquid in rodless cavity 5 reaches the B mouth of hydraulic control one-way valve 2 by pipeline together, flows out from A mouthfuls, P2 mouth, P3 through reversal valve 8
Mouth returns in the fuel tank 9 in manual pump assembly 10.Meanwhile the oil liquid in fuel tank 9 can be passed through by the P3 mouth of reversal valve 8, P4 mouthfuls
Pipeline arrives separately in the rod chamber 4 and 6 of master cylinder assembly 1 and auxiliary oil cylinder assembly 7, completes the supplement of oil liquid, and it is living to complete oil cylinder
Plug is floated downward.
In this way, oil cylinder just completes the movement to float up and down, that is, oil cylinder can carry out up and down together with driver's cabin
It floats.
Claims (10)
1. a kind of non-differential driver's cabin twin-tub hoisting system, which is characterized in that including by 1 master cylinder assembly (1), 1 secondary oil
Cylinder and 1 manual pump assembly (10) composition；
Master cylinder assembly (1) is mainly made of oil cylinder (17) and hydraulic control one-way valve (2)；There are mandril (18) in master cylinder (17)；Top
Bar (18) is fixed with piston, and mandril is located in rodless cavity, and the axis rodless cavity axis of mandril is overlapped；Mandril (18) front end is circle
The conical surface；
Hydraulic control one-way valve (2) is mainly made of spring (14), spool (15), valve body (16), push rod (19), spool (15), valve body
(16) taper-face contact, spring are located at spool rear end；Push rod (19) is fixedly connected with spool (15), and push rod (19) is stretched out from valve body,
The height of push rod (19) front end is higher than the lower limit of mandril (18) circular conical surface, cooperate push rod (19) can with mandril (18), will push away
Bar (19) is compressed to spool direction；Push rod (19) compression strap movable valve plug (15) compressed spring bores spool (15) conical surface and valve body
Face separation makes B mouthfuls to be in connected state with A mouthfuls；For high pressure oil from when C mouthfuls of entrance, B mouthfuls are in connected state with A mouthfuls；
Manual pump assembly (10) is mainly made of reversal valve (8), manual pump (12)；Reversal valve (8) is three position four-way directional control valve,
There are three operating positions, and when the spool of reversal valve (8) is in I, P1 mouthfuls are connected to P2 mouthfuls, and P3 mouthfuls are connected to P4 mouthfuls；Spool
When in II, P1 mouthfuls of cut-offs, P2 mouthful, P3 mouthfuls, three mouthfuls of P4 mouth are connected to；When spool is in III, P1 mouthfuls are connected to P4 mouthfuls, and P3 mouthfuls
It is connected to P2 mouthfuls；Manual pump (12) oiler is connected to fuel tank, the P1 mouth of the oil outlet connection reversal valve of manual pump；
The C mouth of hydraulic control one-way valve (2) connects master cylinder rod chamber and auxiliary oil cylinder rod chamber；The B mouth of hydraulic control one-way valve is connected to
Master cylinder rodless cavity and auxiliary oil cylinder rodless cavity；
The P1 mouth of reversal valve (8) is connected to manual pump (12) oil outlet, the A mouth of the P2 mouth connection hydraulic control one-way valve of reversal valve；Commutation
The P3 mouth of valve is connected to fuel tank；The P4 mouth connection master cylinder rod chamber and auxiliary oil cylinder rod chamber of reversal valve (8).
2. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that when reversal valve is in II
When position, while the mandril (18) in master cylinder assembly compresses push rod state, so that the A mouth of hydraulic control one-way valve is connected to B mouthfuls；Oil
The supplement process of liquid is as follows: the oil liquid in master cylinder rod chamber and auxiliary oil cylinder rod chamber reaches the P4 mouth of reversal valve by pipeline
Afterwards, it is returned in fuel tank through P3 mouthfuls, while the oil liquid in fuel tank passes through successively the P3 mouth of reversal valve, P2 mouthfuls, the A through hydraulic control one-way valve
Mouth arrives separately in master cylinder rodless cavity and auxiliary oil cylinder rodless cavity with B mouthfuls.
3. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that when reversal valve is in II
When position, while the mandril (18) in master cylinder assembly compresses push rod state, so that the A mouth of hydraulic control one-way valve is connected to B mouthfuls；Oil
The supplement process of liquid is as follows: the oil liquid in master cylinder rodless cavity and auxiliary oil cylinder rodless cavity reaches hydraulic control one-way valve by pipeline together
(2) B mouth is flowed out from A mouthfuls, P2 mouth through reversal valve (8), P3 mouthfuls return in fuel tank；The oil liquid in fuel tank can successively lead to simultaneously
Cross reversal valve (8) P3 mouth, P4 mouthfuls, arrived separately in master cylinder rod chamber and auxiliary oil cylinder rod chamber by pipeline.
4. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that when driving, drive
Room is in falling state, and reversal valve is rotated to II.
5. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that fall driver's cabin after rise,
It is exactly after cylinder piston rod is withdrawn, the mandril of master cylinder assembly is in the state of compression hydraulic control one-way valve (2) push rod.
6. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that rodless cavity is located at main oil
Cylinder left end, rodless cavity have mandril directed cavity, which is asphalt channel.
7. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that hydraulic control one-way valve (2)
It further include valve deck composition.
8. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that manual pump assembly (10)
It further include safety valve (11), safety valve (11) is overflow valve, and oil outlet is connected to fuel tank, and it is fuel-displaced that oiler connects manual pump (12)
Mouthful.
9. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that master cylinder, auxiliary oil cylinder
Piston rod act on driver's cabin.
10. a kind of non-differential driver's cabin twin-tub hoisting system according to claim 1, which is characterized in that master cylinder, auxiliary oil cylinder
For non-differential cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711362230.2A CN107939759B (en) | 2017-12-18 | 2017-12-18 | A kind of non-differential driver's cabin twin-tub hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711362230.2A CN107939759B (en) | 2017-12-18 | 2017-12-18 | A kind of non-differential driver's cabin twin-tub hoisting system |
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| Publication Number | Publication Date |
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| CN107939759A CN107939759A (en) | 2018-04-20 |
| CN107939759B true CN107939759B (en) | 2019-09-03 |
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| CN201711362230.2A Active CN107939759B (en) | 2017-12-18 | 2017-12-18 | A kind of non-differential driver's cabin twin-tub hoisting system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538548B (en) * | 2018-12-18 | 2024-03-15 | 北奔重型汽车集团有限公司 | Non-differential cab lifting system |
| CN112125202B (en) * | 2020-10-15 | 2024-10-01 | 北奔重型汽车集团有限公司 | Lifting method for double differential cylinders of cab |
| CN116279853A (en) * | 2022-11-30 | 2023-06-23 | 徐工集团工程机械股份有限公司道路机械分公司 | Turnover cab of road roller and control method |
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| CN106762926A (en) * | 2016-11-22 | 2017-05-31 | 天津海安科技有限公司 | Pressure-adjustable and the electrohydraulic controlling mechanism of off-load |
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| CN107939759A (en) | 2018-04-20 |
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