CN107116986A - A kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle - Google Patents
A kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle Download PDFInfo
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- CN107116986A CN107116986A CN201710303011.0A CN201710303011A CN107116986A CN 107116986 A CN107116986 A CN 107116986A CN 201710303011 A CN201710303011 A CN 201710303011A CN 107116986 A CN107116986 A CN 107116986A
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- pipe
- hydro
- oil
- pneumatic spring
- control valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/154—Fluid spring with an accumulator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/41—Fluid actuator
- B60G2202/413—Hydraulic actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/41—Fluid actuator
- B60G2202/416—Fluid actuator using a pump, e.g. in the line connecting the lower chamber to the upper chamber of the actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/02—Trucks; Load vehicles
- B60G2300/026—Heavy duty trucks
- B60G2300/0262—Multi-axle trucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a kind of big stroke adjustment system of the bodywork height for multi-axle heavy type vehicle, including hydraulic power unit and lifting pilot unit, hydraulic power unit includes oil inlet pipe, oil return pipe, oil distributing pipe, and the first branch oil pipe, the second branch oil pipe, the 3rd branch oil pipe and the 4th branch oil pipe being connected respectively with oil distributing pipe；Lifting pilot unit is made up of the draft hitch in all vehicle bridge, draft hitch includes Top Crossbeam, lower cross arm and hydro-pneumatic spring, all vehicle bridge are divided into the propons group being made up of m vehicle bridge and the back axle group being made up of n vehicle bridge, hydro-pneumatic spring on the left of propons group is connected with the first branch oil pipe respectively, hydro-pneumatic spring on the right side of propons group is connected with the second branch oil pipe respectively, hydro-pneumatic spring on the left of back axle group is connected with the 3rd branch oil pipe respectively, and the hydro-pneumatic spring on the right side of back axle group is connected with the 4th branch oil pipe respectively.It has the advantages that simple in construction, implementation is easy, control is flexible, it is big, applied widely to heighten stroke.
Description
Technical field
The present invention relates to a kind of vehicle height-regulating device, and in particular to a kind of bodywork height for multi-axle heavy type vehicle is adjusted
System.
Background technology
In automotive field, multi-axle heavy type vehicle is higher by the requirement of property to it because load is big, traveling road conditions are complicated,
This, which is accomplished by vehicle, has the adjustable function of bodywork height.Bodywork height regulation technology based on hydro pneumatic suspension is with its bearing capacity
Greatly, compact conformation, the advantages of function degrees of fusion is high, be applied in heavy vehicles more and more.But it is existing to be based on oil gas
The vehicle body of suspension heighten technology generally existing heighten that small stroke, poor synchronization, stability are poor, control is dumb, speed is non-adjustable,
The problem of scope of application is small.Especially for special vehicle, the special operation conditions such as railway transportation are often faced, this requires vehicle body
Height Adjustable stroke is sufficiently large, and current vehicle body heighten technology can not meet its requirement.
The content of the invention
It is an object of the invention to provide a kind of big stroke adjustment system of the bodywork height for multi-axle heavy type vehicle, it has
Simple in construction, implementation is easily, control is flexible, heighten big, the applied widely advantage of stroke, and car can be effectively improved using the present invention
Synchronism and stability that body is heightened.
To solve above-mentioned technical problem of the prior art, the invention provides a kind of vehicle body for multi-axle heavy type vehicle
The big stroke adjustment system of height, including hydraulic power unit and lifting pilot unit, the hydraulic power unit include oil inlet pipe,
Oil return pipe, oil distributing pipe, and be connected respectively with oil distributing pipe the first branch oil pipe, the second branch oil pipe, the 3rd branch oil pipe and the 4th
Oil pipe, one end of the oil inlet pipe and oil return pipe is connected with oil distributing pipe respectively, and the other end of oil inlet pipe and oil return pipe is used for and oil
Source is connected；It is described lifting pilot unit be made up of the draft hitch in all vehicle bridge, draft hitch include Top Crossbeam, lower cross arm and
The inner end correspondence of hydro-pneumatic spring, Top Crossbeam and lower cross arm is hinged by the first bearing pin and the second bearing pin with vehicle frame, and Top Crossbeam is with
The outer end correspondence of transverse arm is provided with the first ball pivot and the second ball pivot, and the first ball pivot and the second ball pivot are connected with wheel group respectively, oil gas
The upper end of spring is hinged by the first oscillating bearing and vehicle frame, and the lower end of hydro-pneumatic spring is cut with scissors by second joint bearing and lower cross arm
Connect；All vehicle bridge are divided into the propons group being made up of m vehicle bridge and the back axle group being made up of n vehicle bridge, and all left sides of propons group hang
The hydro-pneumatic spring epicoele of rack device is connected and the first branch oil pipe between hydro-pneumatic spring and oil distributing pipe with the first branch oil pipe respectively
The first solenoid directional control valve is provided with, the hydro-pneumatic spring epicoele of all right side draft hitch of propons group is connected with the second branch oil pipe respectively
And the second solenoid directional control valve, all left side suspension dresses of back axle group are provided with the second branch oil pipe between hydro-pneumatic spring and oil distributing pipe
The hydro-pneumatic spring epicoele put is connected with the 3rd branch oil pipe and set on the 3rd branch oil pipe between hydro-pneumatic spring and oil distributing pipe respectively
Have the 3rd solenoid directional control valve, the hydro-pneumatic spring epicoele of all right side draft hitch of back axle group be connected respectively with the 4th branch oil pipe and
The 4th branch oil pipe between hydro-pneumatic spring and oil distributing pipe is provided with the 4th solenoid directional control valve, and oil inlet pipe is provided with the 5th electromagnetic switch
Valve, oil return pipe is provided with the 6th solenoid directional control valve, wherein m >=1, n >=1.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
The first branch oil pipe between first solenoid directional control valve and oil distributing pipe is provided with the first proportional flow control valve, the second solenoid directional control valve and point
The second branch oil pipe between oil pipe is provided with the second proportional flow control valve, the 3rd oil between the 3rd solenoid directional control valve and oil distributing pipe
Pipe is provided with the 3rd proportional flow control valve, and the 4th branch oil pipe between the 4th solenoid directional control valve and oil distributing pipe is provided with the 4th ratio stream
Measure valve.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
Oil inlet pipe between 5th solenoid directional control valve and oil distributing pipe is provided with line check valve；It is provided between the oil return pipe and oil inlet pipe
Overflow pipe, overflow pipe is provided with proportional pressure control valve, and the tie point of overflow pipe and oil inlet pipe is in the 5th solenoid directional control valve and oil-feed
Between check valve, the tie point of overflow pipe and oil return pipe is in side of the 6th solenoid directional control valve relative to oil sources.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
The first branch oil pipe between first solenoid directional control valve and closest hydro-pneumatic spring is provided with first pressure sensor；Second electricity
The second branch oil pipe between magnetic reversal valve and closest hydro-pneumatic spring is provided with second pressure sensor；3rd electromagnetic switch
The 3rd branch oil pipe between valve and closest hydro-pneumatic spring is provided with the 3rd pressure sensor；4th solenoid directional control valve and away from
The 4th pressure sensor is provided with from the 4th branch oil pipe between nearest hydro-pneumatic spring；5th solenoid directional control valve and oil-feed are unidirectional
Oil inlet pipe between valve is provided with the 5th pressure sensor.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
The first branch oil pipe between first solenoid directional control valve and closest hydro-pneumatic spring is provided with the first external oil-filled check valve；The
The second branch oil pipe between two solenoid directional control valves and closest hydro-pneumatic spring is provided with the second external oil-filled check valve；3rd
The 3rd branch oil pipe between solenoid directional control valve and closest hydro-pneumatic spring is provided with the 3rd external oil-filled check valve；4th electricity
The 4th branch oil pipe between magnetic reversal valve and closest hydro-pneumatic spring is provided with the 4th external oil-filled check valve；5th electromagnetism
Reversal valve is provided with the 5th external oil-filled check valve relative to the oil inlet pipe of oil sources side.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
Stop valve and bidirectional high-pressure filter are additionally provided with oil inlet pipe between 5th solenoid directional control valve and the 5th external oil-filled check valve.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
The 7th solenoid directional control valve, propons are equipped with the first branch oil pipe between the adjacent hydro-pneumatic spring of all left side draft hitch of propons group
The 8th solenoid directional control valve, the back axle are equipped with the second branch oil pipe between the adjacent hydro-pneumatic spring of all right side draft hitch of group
The 9th solenoid directional control valve, back axle group institute are equipped with the 3rd branch oil pipe between the adjacent hydro-pneumatic spring of all left side draft hitch of group
Have and be equipped with the tenth solenoid directional control valve on the 4th branch oil pipe between the adjacent hydro-pneumatic spring of right side draft hitch.
Further, the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention, wherein, it is described
The cavity of resorption of hydro-pneumatic spring is connected with the first one-way throttle valve and the first accumulator in turn in all left side draft hitch of propons group
And the first accumulator is connected with the epicoele of corresponding hydro-pneumatic spring, and make hydro-pneumatic spring in all left side draft hitch of propons group
The arrival end of corresponding first accumulator homogeneously connects；In all right side draft hitch of propons group the cavity of resorption of hydro-pneumatic spring according to
It is secondary to be connected with the second one-way throttle valve and the second accumulator and the second accumulator is connected with the epicoele of corresponding hydro-pneumatic spring, and
The arrival end of corresponding second accumulator of hydro-pneumatic spring in all right side draft hitch of propons group is set homogeneously to connect；Back axle group institute
The cavity of resorption for having hydro-pneumatic spring in the draft hitch of left side is connected with the 3rd one-way throttle valve and the 3rd accumulator in turn and makes the 3rd
The epicoele of accumulator and corresponding hydro-pneumatic spring is connected, and makes in all left side draft hitch of back axle group hydro-pneumatic spring corresponding the
The arrival end of three accumulators homogeneously connects；The cavity of resorption of hydro-pneumatic spring is connected with turn in all right side draft hitch of back axle group
4th one-way throttle valve and the 4th accumulator simultaneously make the 4th accumulator be connected with the epicoele of corresponding hydro-pneumatic spring, and make back axle group
The arrival end of corresponding 4th accumulator of hydro-pneumatic spring homogeneously connects in all right side draft hitch.
A kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle of the invention compared with prior art, has
Advantages below：The present invention allows hydraulic power unit to specifically include oil-feed by setting hydraulic power unit and lifting pilot unit
Pipe, oil return pipe, oil distributing pipe, and the first branch oil pipe, the second branch oil pipe, the 3rd branch oil pipe and the 4th being connected respectively with oil distributing pipe
Branch oil pipe, allows one end of oil inlet pipe and oil return pipe to be connected respectively with oil distributing pipe, allows the other end of oil inlet pipe and oil return pipe using
When be connected with oil sources.Meanwhile, allow lifting pilot unit to be made up of the draft hitch in all vehicle bridge, wherein draft hitch is specifically wrapped
Include Top Crossbeam, lower cross arm and hydro-pneumatic spring, allow Top Crossbeam and lower cross arm inner end correspondence by the first bearing pin and the second bearing pin with
Vehicle frame is hinged, and allows Top Crossbeam is corresponding with the outer end of lower cross arm to install the first ball pivot and the second ball pivot, allows the first ball pivot and the second ball
Hinge is connected with wheel group respectively, allows the upper end of hydro-pneumatic spring to be hinged by the first oscillating bearing and vehicle frame, allows the lower end of hydro-pneumatic spring
It is hinged by second joint bearing and lower cross arm.And allow all vehicle bridge to be divided into the propons group that is made up of m vehicle bridge and by n vehicle bridge
The back axle group of composition, allows the hydro-pneumatic spring epicoele of all left side draft hitch of propons group to be connected and in oil with the first branch oil pipe respectively
The first solenoid directional control valve is set on the first branch oil pipe between gas spring and oil distributing pipe, all right side draft hitch of propons group are allowed
Hydro-pneumatic spring epicoele is connected with the second branch oil pipe and sets on the second branch oil pipe between hydro-pneumatic spring and oil distributing pipe respectively
Two solenoid directional control valves, allow the hydro-pneumatic spring epicoele of all left side draft hitch of back axle group to be connected and in oil with the 3rd branch oil pipe respectively
3rd solenoid directional control valve is set on the 3rd branch oil pipe between gas spring and oil distributing pipe, all right side draft hitch of back axle group are allowed
Hydro-pneumatic spring epicoele is connected with the 4th branch oil pipe and sets on the 4th branch oil pipe between hydro-pneumatic spring and oil distributing pipe respectively
Four solenoid directional control valves.And the 5th solenoid directional control valve is set on oil inlet pipe, the 6th solenoid directional control valve is set on oil return pipe, wherein
M >=1, n >=1.Thus just constitute it is a kind of it is simple in construction, implement easily, control flexibly, to heighten stroke big, applied widely
The big stroke adjustment system of bodywork height for multi-axle heavy type vehicle.In actual applications, the present invention is on the basis of hydro pneumatic suspension
On by setting up a set of independent oil sources and hydraulic system, and the hydro-pneumatic spring allowed on the left of propons group is mutual by the first branch oil pipe
Connection, the hydro-pneumatic spring allowed on the right side of propons group is interconnected by the second branch oil pipe, and the hydro-pneumatic spring allowed on the left of back axle group passes through
3rd branch oil pipe is interconnected, and the hydro-pneumatic spring allowed on the right side of back axle group is interconnected by the 4th branch oil pipe, just constitute it is left front,
Four-point supporting system before the right side, behind the left back and right side.The structure design of this simplified strong point is more prone to control, and can be effective
Improve the synchronism that vehicle body is heightened.Meanwhile, the present invention to the draft hitch as lifting pilot unit by carrying out hard spot coordinate
Optimization design, and by using the first ball pivot and the second ball pivot of polarizers of big angle scope, realize the big stroke adjustment of bodywork height
Purpose.Show through practical application, vehicle body can be down to vehicle frame using the present invention lands state, can fully meet the spies such as railway transportation
The requirement of different operating mode.In addition, the present invention is by allowing the first branch oil pipe, the second branch oil pipe, the 3rd branch oil pipe and the 4th branch oil pipe to divide
It is not connected with oil distributing pipe, allows oil distributing pipe to be connected respectively with oil inlet pipe and oil return pipe, and electromagnetic switch is set on respective pipeline
Valve is controlled, and is made the first branch oil pipe, the second branch oil pipe, the 3rd branch oil pipe and the 4th branch oil pipe while playing and is sent oily and oil return
Effect, simplifies structure, makes implementation and control more easy.
Shown embodiment is big to a kind of bodywork height for multi-axle heavy type vehicle of the invention below in conjunction with the accompanying drawings
Stroke adjustment system is described in further detail：
Brief description of the drawings
Fig. 1 is hydraulic power unit in a kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle of the invention
Schematic diagram；
Fig. 2 is single draft hitch in a kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle of the invention
Schematic diagram；
Fig. 3 is single draft hitch in a kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle of the invention
With the annexation schematic diagram of vehicle frame.
Embodiment
The tool of the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle of the invention as shown in Figure 1 to Figure 3
Body embodiment, including hydraulic power unit and lifting pilot unit.Hydraulic power unit specifically includes oil inlet pipe 1, oil return pipe
2nd, oil distributing pipe 3, and be connected respectively with oil distributing pipe 3 the first branch oil pipe 4, the second branch oil pipe 5, the 3rd branch oil pipe 6 and the 4th
Oil pipe 7.Allow one end of oil inlet pipe 1 and oil return pipe 2 to be connected respectively with oil distributing pipe 3, allow oil inlet pipe 1 and the other end of oil return pipe 2 to exist
It is connected in use with oil sources, and fuel circulating pump is set in oil sources side.Lifting pilot unit is allowed by the draft hitch group in all vehicle bridge
Into single draft hitch specifically includes Top Crossbeam 8, lower cross arm 9 and hydro-pneumatic spring 10.Allow the inner end pair of Top Crossbeam 8 and lower cross arm 9
It should be hinged by the first bearing pin 81 and the second bearing pin 91 with vehicle frame, allow Top Crossbeam 8 is corresponding with the outer end of lower cross arm 9 first ball is installed
The ball pivot 92 of hinge 82 and second, and the first ball pivot 82 and the second ball pivot 92 is connected respectively with wheel group.Allow the upper end of hydro-pneumatic spring 10
It is hinged by the first oscillating bearing 101 with vehicle frame, allows the lower end of hydro-pneumatic spring 10 to pass through second joint bearing 102 and lower cross arm 9
It is hinged.Meanwhile, allow all vehicle bridge to be divided into the propons group being made up of m vehicle bridge and the back axle group being made up of n vehicle bridge, wherein, m >=
1, n >=1.And allow all left side draft hitch of propons group hydro-pneumatic spring 10 epicoele be connected respectively with the first branch oil pipe 4 and
First solenoid directional control valve 41 is set on the first branch oil pipe 4 between hydro-pneumatic spring 10 and oil distributing pipe 3, allows all right sides of propons group to hang
The epicoele of the hydro-pneumatic spring 10 of rack device is connected and between hydro-pneumatic spring 10 and oil distributing pipe 3 with the second branch oil pipe 5 respectively
Second solenoid directional control valve 51 is set on two branch oil pipes 5, allow all left side draft hitch of back axle group hydro-pneumatic spring 10 epicoele point
It is not connected with the 3rd branch oil pipe 6 and the 3rd electromagnetic switch is set on the 3rd branch oil pipe 6 between hydro-pneumatic spring 10 and oil distributing pipe 3
Valve 61, allows the epicoele of hydro-pneumatic spring 10 of all right side draft hitch of back axle group to be connected and in oil gas with the 4th branch oil pipe 7 respectively
4th solenoid directional control valve 71 is set on the 4th branch oil pipe 7 between spring 10 and oil distributing pipe 3.And the 5th is set on oil inlet pipe 1
Solenoid directional control valve 11, sets the 6th solenoid directional control valve 21 on oil return pipe 2.It should be noted that only denoting 6 in accompanying drawing 1
Vehicle bridge, wherein propons group include two vehicle bridge, i.e. m=2, and back axle group includes four vehicle bridge, i.e. n=4, but in actual applications simultaneously
6 vehicle bridge are not limited to, if meet more than 2 vehicle bridge, and the vehicle bridge number that includes of propons group and back axle group are included
Vehicle bridge number can be configured according to specific vehicle bridge situation and being actually needed, as long as propons group and back axle group comprise at least one
Vehicle bridge, i.e. m >=1, n >=1, can be achieved the object of the invention.
By above structure setting just constitute it is a kind of it is simple in construction, implement easily, control flexibly, to heighten stroke big, suitable
With the big stroke adjustment system of the bodywork height for multi-axle heavy type vehicle of scope extensively.In actual applications, the present invention is in oil gas
By setting up a set of independent oil sources and hydraulic system on the basis of suspension, and the hydro-pneumatic spring 10 on the left of propons group is allowed by
One branch oil pipe 4 is interconnected, and the hydro-pneumatic spring 10 allowed on the right side of propons group is interconnected by the second branch oil pipe 5, makes back axle group left
The hydro-pneumatic spring 10 of side is interconnected by the 3rd branch oil pipe 6, and the hydro-pneumatic spring 10 allowed on the right side of back axle group passes through the 4th branch oil pipe 7
It is interconnected, just constitutes the four-point supporting system of front left, front right, rear left and right.The structure design of this simplified strong point
It is more prone to control, and the synchronism that vehicle body is heightened can be effectively improved.Meanwhile, the present invention passes through to being used as lifting pilot unit
Draft hitch carry out hard spot coordinate optimizing design, and by using the first ball pivot 82 and the second ball pivot 92 of polarizers of big angle scope,
Realize the purpose of the big stroke adjustment of bodywork height.Show through practical application, vehicle body can be down into vehicle frame using the present invention lands
State, can fully meet the requirement that the special operation conditions such as railway transportation heighten big stroke to vehicle body.In addition, the present invention is by allowing first
Branch oil pipe 4, the second branch oil pipe 5, the 3rd branch oil pipe 6 and the 4th branch oil pipe 7 are connected with oil distributing pipe 3 respectively, allow oil distributing pipe 3 respectively with
Oil inlet pipe 1 and oil return pipe 2 are connected, and set solenoid directional control valve to be controlled on respective pipeline, make the first branch oil pipe 4, the
Two branch oil pipes 5, the 3rd branch oil pipe 6 and the 4th branch oil pipe 7 play a part of sending oil and oil return simultaneously, simplify structure, make implementation
It is more easy with control.The detailed process for carrying out bodywork height regulation using the present invention is as follows：When vehicle body need to be raised, pass through control
System processed allow the 5th solenoid directional control valve 11, the 6th solenoid directional control valve 21, the first solenoid directional control valve 41, the second solenoid directional control valve 51,
3rd solenoid directional control valve 61 and the 4th solenoid directional control valve 71 are in forward conduction state, and oil sources leads to hydraulic oil by fuel circulating pump
Cross oil inlet pipe 1 and be delivered to oil distributing pipe 3, and pass through the first branch oil pipe 4, the second branch oil pipe 5, the 3rd branch oil pipe 6 and the 4th branch oil pipe 7
Correspond to the hydro-pneumatic spring 10 on the left of propons group, the hydro-pneumatic spring 10 on the right side of propons group, the and of hydro-pneumatic spring 10 on the left of back axle group
Hydro-pneumatic spring 10 on the right side of back axle group is oil-filled, so as to realize the elevated purpose of vehicle body, and makes to send when reaching that vehicle body rise is required
Oil pump stops.When vehicle body need to be reduced, then allow the 5th solenoid directional control valve 11 to be in forward conduction state by control system, and allow
6th solenoid directional control valve 21, the first solenoid directional control valve 41, the second solenoid directional control valve 51, the 3rd solenoid directional control valve 61 and the 4th electromagnetism
Reversal valve 71 is in reverse-conducting state, and stops fuel circulating pump, on the right side of the hydro-pneumatic spring 10, propons group on the left of propons group
The effect that the hydro-pneumatic spring 10 on the right side of hydro-pneumatic spring 10 and back axle group on the left of hydro-pneumatic spring 10, back axle group is pushed in vehicle body gravity
Under, hydraulic oil correspondence therein is flowed back by the first branch oil pipe 4, the second branch oil pipe 5, the 3rd branch oil pipe 6 and the 4th branch oil pipe 7
Oil sources is back to oil distributing pipe 3, and by oil return pipe 2, so as to realize the purpose of vehicle body reduction, and is reaching that vehicle body lowers the requirement
When the 6th solenoid directional control valve 21 is converted to forward conduction state.During above-mentioned vehicle body is raised and lowered, it can also lead to
The first solenoid directional control valve 41, the second solenoid directional control valve 51, the 3rd solenoid directional control valve 61 or the 4th solenoid directional control valve 71 is crossed to control respectively
The on and off of the first branch oil pipe 4, the second branch oil pipe 5, the 3rd branch oil pipe 6 or the 4th branch oil pipe 7 is made, to realize the part liter of vehicle body
Drop, with flexible, the adaptable advantage of control.
As prioritization scheme, first oil of the present embodiment between the first solenoid directional control valve 41 and oil distributing pipe 3
It is provided with the first proportional flow control valve 42, the second branch oil pipe 5 between the second solenoid directional control valve 51 and oil distributing pipe 3 and sets on pipe 4
Put and the 3rd is provided with the second proportional flow control valve 52, the 3rd branch oil pipe 6 between the 3rd solenoid directional control valve 61 and oil distributing pipe 3
The 4th proportional flow is provided with proportional flow control valve 62, the 4th branch oil pipe 7 between the 4th solenoid directional control valve 71 and oil distributing pipe 3
Valve 72.This structure setting, passes through the first proportional flow control valve 42, the second proportional flow control valve 52, the 3rd proportional flow control valve 62 and
Four proportional flow control valves 72 can be corresponded in the first branch oil pipe 4 of control, the second branch oil pipe 5, the 3rd branch oil pipe 6 and the 4th branch oil pipe 7
Hydraulic fluid flow rate, so as to realize the purpose of control vehicle body lifting speed.When needing fast lifting integral body or certain part, lead to
Its hydraulic fluid flow rate can be increased by crossing the control system current signal larger to the input of corresponding proportional flow control valve；It is on the contrary then to phase
The proportional flow control valve answered inputs less current signal；And give the first proportional flow control valve 42, the second ratio stream by control input
The current signal of valve 52, the 3rd proportional flow control valve 62 and the 4th proportional flow control valve 72 is measured, can effectively be protected in vehicle body integral elevating
Demonstrate,prove the synchronism between propons group left side, propons group right side, back axle group left side and four strong points on the right side of back axle group.Meanwhile, this
Embodiment is provided with line check valve 12 on the oil inlet pipe 1 between the 5th solenoid directional control valve 11 and oil distributing pipe 3.Returning
Overflow pipe 22 is provided between oil pipe 2 and oil inlet pipe 1, and is provided with overflow pipe 22 proportional pressure control valve 23, and allows overflow pipe
22 and the tie point of oil inlet pipe 1 be between the 5th solenoid directional control valve 11 and in line check valve 12, allow overflow pipe 22 and oil return pipe 2
Tie point be in the 6th solenoid directional control valve 21 relative to oil sources side.By setting in line check valve 12, in rise vehicle body
When can ensure that the hydraulic oil of oil sources conveying only reaches in line check valve 12 can be just filled out after required pressure, and be each vehicle bridge
Hydro-pneumatic spring 10 is oil-filled, can strengthen the stability of vehicle body elevation process.By setting overflow pipe 22 and proportional pressure control valve 23, can have
The maximum pressure of effect control oil sources output, when needing oil sources to export higher pressure, by the control electricity for improving proportional pressure control valve
Stream turns on the i.e. achievable purpose of hydraulic pressure value to improve it, and when needing to reduce the pressure of oil sources output, then by reducing ratio
The control electric current of overflow valve turns on hydraulic pressure value to reduce it.Have the advantages that easy to control flexible, applied widely.
As prioritization scheme, present embodiment the first solenoid directional control valve 41 and closest hydro-pneumatic spring 10 it
Between the first branch oil pipe 4 on be provided with first pressure sensor 43；In the second solenoid directional control valve 51 and closest oil gas bullet
Second pressure sensor 53 is provided with the second branch oil pipe 5 between spring 10；In the 3rd solenoid directional control valve 61 and closest
The 3rd pressure sensor 63 is provided with the 3rd branch oil pipe 6 between hydro-pneumatic spring 10；In the 4th solenoid directional control valve 71 and distance
The 4th pressure sensor 73 is provided with the 4th branch oil pipe 7 between nearest hydro-pneumatic spring 10；In the 5th solenoid directional control valve 11
The 5th pressure sensor 13 is provided with oil inlet pipe 1 between in line check valve 12.Pass through first pressure sensor 43, second
Pressure sensor 53, the 3rd pressure sensor 63, the 4th pressure sensor 73 and the 5th pressure sensor 13, were lifted in vehicle body
In journey can effective detection correspondence pipeline in pressure, by the way that each pressure signal detected is transferred into control system, can improve
The accuracy and security of vehicle body lifting.Meanwhile, when raising vehicle body for ease of height fine adjusting function, it is ensured that the first branch oil pipe 4, second
Pressure in branch oil pipe 5, the 3rd branch oil pipe 6 and the 4th branch oil pipe 7, present embodiment the first solenoid directional control valve 41 and away from
From on the first branch oil pipe 4 between nearest hydro-pneumatic spring 10 be provided with the first external oil-filled check valve 44；Changed in the second electromagnetism
The second external oil-filled check valve 54 is provided with to the second branch oil pipe 5 between valve 51 and closest hydro-pneumatic spring 10；
The 3rd external oil-filled list is provided with the 3rd branch oil pipe 6 between 3rd solenoid directional control valve 61 and closest hydro-pneumatic spring 10
To valve 64；The 4th is provided with the 4th branch oil pipe 7 between the 4th solenoid directional control valve 71 and closest hydro-pneumatic spring 10
External oil-filled check valve 74, in order to external oil-filled for each branch oil pipe, makes vehicle body keep stable state.In addition, to avoid oil
Influence output pressure is reduced in source, and present embodiment is also in oil inlet pipe 1 of the 5th solenoid directional control valve 11 relative to oil sources side
It is upper to be provided with the 5th external oil-filled check valve 14, in order to external oil-filled.
As further prioritization scheme, present embodiment is external oil-filled unidirectional in the 5th solenoid directional control valve 11 and the 5th
Stop valve 15 and bidirectional high-pressure filter 16 are also provided with oil inlet pipe 1 between valve 14.Can further it be carried by stop valve 15
The stability of high hydraulic power unit, can avoid impurity from entering each control valve and hydro-pneumatic spring by bidirectional high-pressure filter 16,
It ensure that its service behaviour.In on the left of individually control propons group, on the right side of propons group, on the left of back axle group and on the right side of propons group
Each single draft hitch do not have a gas spring 10, this tool present embodiment is in the adjacent oil gas of all left side draft hitch of propons group
The 7th solenoid directional control valve 45 is provided with the first branch oil pipe 4 between spring 10, in all right side draft hitch phases of propons group
The 8th solenoid directional control valve 55 is provided with the second branch oil pipe 5 between adjacent hydro-pneumatic spring 10, in all left side suspensions of back axle group
The 9th solenoid directional control valve 65 is provided with the 3rd branch oil pipe 6 between the adjacent hydro-pneumatic spring 10 of device, on all right sides of back axle group
The tenth solenoid directional control valve 75 is provided with the 4th branch oil pipe 7 between the adjacent hydro-pneumatic spring 10 of side draft hitch.In addition, this tool
Body embodiment also allows the cavity of resorption of hydro-pneumatic spring 10 in all left side draft hitch of propons group to be sequentially connected the first one-way throttle
The accumulator 47 of valve 46 and first simultaneously makes the first accumulator 47 be connected with the epicoele of corresponding hydro-pneumatic spring 10, and own propons group
The arrival end of corresponding first accumulator 47 of hydro-pneumatic spring 10 homogeneously connects in the draft hitch of left side.Allow all right sides of propons group
The cavity of resorption of hydro-pneumatic spring 10 is sequentially connected the second one-way throttle valve 56 and the second accumulator 57 and makes the second storage in draft hitch
Energy device 57 is connected with the epicoele of corresponding hydro-pneumatic spring 10, and makes the correspondence of hydro-pneumatic spring 10 in all right side draft hitch of propons group
The arrival end of the second accumulator 57 homogeneously connect.Make the cavity of resorption of hydro-pneumatic spring 10 in all left side draft hitch of back axle group equal
It is sequentially connected the 3rd one-way throttle valve 66 and the 3rd accumulator 67 and makes the upper of the 3rd accumulator 67 and corresponding hydro-pneumatic spring 10
Chamber is connected, and makes the arrival end of corresponding 3rd accumulator 67 of hydro-pneumatic spring 10 in all left side draft hitch of back axle group mutually
Connection.The cavity of resorption of hydro-pneumatic spring 10 in all right side draft hitch of back axle group is allowed to be sequentially connected the 4th one-way throttle valve 76 and
Four accumulators 77 simultaneously make the 4th accumulator 77 be connected with the epicoele of corresponding hydro-pneumatic spring 10, and make all right side suspensions of back axle group
The arrival end of corresponding 4th accumulator 77 of hydro-pneumatic spring 10 homogeneously connects in device.This structure setting can make propons group institute
There are the hydro-pneumatic spring 10, the hydro-pneumatic spring 10 of all right side draft hitch of propons group, all left sides of back axle group of left side draft hitch
The equal pressurize dynamic balance of hydro-pneumatic spring 10 of all right side draft hitch of hydro-pneumatic spring 10 and back axle group of draft hitch, to avoid portion
The hanging phenomenon of minute wheel group, and elastic force is provided to draft hitch by accumulator, effective cushioning effect can be played, is improved
Vehicle passes through property and stability.It should be noted that for ease of the regulation of accurate control bodywork height, the present invention actually should
In also in hydro-pneumatic spring built-in displacement transducer, the displacement that can gather hydro-pneumatic spring in real time by displacement transducer believes
Number, accurate control purpose can be achieved by the way that the displacement signal of hydro-pneumatic spring is transferred into control system.
Above example is only the description carried out to the preferred embodiment for the present invention, and scope not is claimed to the present invention
The restriction of progress, on the premise of design spirit of the present invention is not departed from, technology of this area engineers and technicians according to the present invention
In the various forms of deformations that scheme is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (8)
1. a kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle, including hydraulic power unit and lifting are oriented to
Unit, it is characterised in that the hydraulic power unit include oil inlet pipe (1), oil return pipe (2), oil distributing pipe (3), and respectively with
The first branch oil pipe (4), the second branch oil pipe (5), the 3rd branch oil pipe (6) and the 4th branch oil pipe (7) of oil distributing pipe (3) connection, it is described
One end of oil inlet pipe (1) and oil return pipe (2) is connected with oil distributing pipe (3) respectively, and the other end of oil inlet pipe (1) and oil return pipe (2) is used
It is connected in oil sources；The lifting pilot unit is made up of the draft hitch in all vehicle bridge, and draft hitch includes Top Crossbeam
(8), lower cross arm (9) and hydro-pneumatic spring (10), Top Crossbeam (8) it is corresponding with the inner end of lower cross arm (9) by the first bearing pin (81) and
Second bearing pin (91) is hinged with vehicle frame, and Top Crossbeam (8) is corresponding with the outer end of lower cross arm (9) to be provided with the first ball pivot (82) and second
Ball pivot (92), the first ball pivot (82) and the second ball pivot (92) are connected with wheel group respectively, and the upper end of hydro-pneumatic spring (10) passes through first
Oscillating bearing (101) is hinged with vehicle frame, and the lower end of hydro-pneumatic spring (10) is cut with scissors by second joint bearing (102) and lower cross arm (9)
Connect；All vehicle bridge are divided into the propons group being made up of m vehicle bridge and the back axle group being made up of n vehicle bridge, and all left sides of propons group hang
Hydro-pneumatic spring (10) epicoele of rack device be connected respectively with the first branch oil pipe (4) and hydro-pneumatic spring (10) and oil distributing pipe (3) it
Between the first branch oil pipe (4) be provided with the first solenoid directional control valve (41), the hydro-pneumatic spring of all right side draft hitch of propons group
(10) epicoele is connected and the second branch oil pipe (5) between hydro-pneumatic spring (10) and oil distributing pipe (3) with the second branch oil pipe (5) respectively
Be provided with the second solenoid directional control valve (51), hydro-pneumatic spring (10) epicoeles of all left side draft hitch of back axle group respectively with the 3rd
Oil pipe (6) connects and the 3rd solenoid directional control valve is provided with the 3rd branch oil pipe (6) between hydro-pneumatic spring (10) and oil distributing pipe (3)
(61), hydro-pneumatic spring (10) epicoele of all right side draft hitch of back axle group is connected and in oil gas with the 4th branch oil pipe (7) respectively
The 4th branch oil pipe (7) between spring (10) and oil distributing pipe (3) is provided with the 4th solenoid directional control valve (71), and oil inlet pipe is set on (1)
There is the 5th solenoid directional control valve (11), oil return pipe (2) is provided with the 6th solenoid directional control valve (21), wherein m >=1, n >=1.
2. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 1, its feature
It is, the first branch oil pipe (4) between first solenoid directional control valve (41) and oil distributing pipe (3) is provided with the first proportional flow control valve
(42), the second branch oil pipe (5) between the second solenoid directional control valve (51) and oil distributing pipe (3) is provided with the second proportional flow control valve
(52), the 3rd branch oil pipe (6) between the 3rd solenoid directional control valve (61) and oil distributing pipe (3) is provided with the 3rd proportional flow control valve
(62), the 4th branch oil pipe (7) between the 4th solenoid directional control valve (71) and oil distributing pipe (3) is provided with the 4th proportional flow control valve
(72)。
3. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 2, its feature
It is, the oil inlet pipe (1) between the 5th solenoid directional control valve (11) and oil distributing pipe (3) is provided with line check valve (12)；Institute
State and overflow pipe (22) is provided between oil return pipe (2) and oil inlet pipe (1), overflow pipe (22) is provided with proportional pressure control valve (23), overflow
The tie point for managing (22) and oil inlet pipe (1) is between the 5th solenoid directional control valve (11) and in line check valve (12), overflow pipe
(22) it is in side of the 6th solenoid directional control valve (21) relative to oil sources with the tie point of oil return pipe (2).
4. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 3, its feature
It is, the first branch oil pipe (4) between first solenoid directional control valve (41) and closest hydro-pneumatic spring (10) is provided with
First pressure sensor (43)；The second branch oil pipe between second solenoid directional control valve (51) and closest hydro-pneumatic spring (10)
(5) it is provided with second pressure sensor (53)；Between 3rd solenoid directional control valve (61) and closest hydro-pneumatic spring (10)
3rd branch oil pipe (6) is provided with the 3rd pressure sensor (63)；4th solenoid directional control valve (71) and closest hydro-pneumatic spring
(10) the 4th branch oil pipe (7) between is provided with the 4th pressure sensor (73)；5th solenoid directional control valve (11) and oil-feed are unidirectional
Oil inlet pipe (1) between valve (12) is provided with the 5th pressure sensor (13).
5. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 4, its feature
It is, the first branch oil pipe (4) between first solenoid directional control valve (41) and closest hydro-pneumatic spring (10) is provided with
First external oil-filled check valve (44)；Second between second solenoid directional control valve (51) and closest hydro-pneumatic spring (10)
Oil pipe (5) is provided with the second external oil-filled check valve (54)；3rd solenoid directional control valve (61) and closest hydro-pneumatic spring
(10) the 3rd branch oil pipe (6) between is provided with the 3rd external oil-filled check valve (64)；4th solenoid directional control valve (71) and distance
The 4th branch oil pipe (7) between nearest hydro-pneumatic spring (10) is provided with the 4th external oil-filled check valve (74)；5th electromagnetism is changed
The 5th external oil-filled check valve (14) is provided with to oil inlet pipe (1) of the valve (11) relative to oil sources side.
6. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 5, its feature
It is, is additionally provided with and cuts on the oil inlet pipe (1) between the 5th solenoid directional control valve (11) and the 5th external oil-filled check valve (14)
Only valve (15) and bidirectional high-pressure filter (16).
7. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 5, its feature
It is, is equipped with the first branch oil pipe (4) between the adjacent hydro-pneumatic spring (10) of all left side draft hitch of propons group
On the second branch oil pipe (5) between seven solenoid directional control valves (45), the adjacent hydro-pneumatic spring (10) of all right side draft hitch of propons group
It is equipped with the 8th solenoid directional control valve (55), the between the adjacent hydro-pneumatic spring (10) of all left side draft hitch of back axle group the 3rd
Be equipped with the 9th solenoid directional control valve (65) on branch oil pipe (6), the adjacent hydro-pneumatic spring (10) of all right side draft hitch of back axle group it
Between the 4th branch oil pipe (7) on be equipped with the tenth solenoid directional control valve (75).
8. according to the big stroke adjustment system of a kind of bodywork height for multi-axle heavy type vehicle described in claim 5, its feature
It is, the cavity of resorption of hydro-pneumatic spring (10) is connected with the first one-way throttle valve in turn in all left side draft hitch of propons group
(46) and the first accumulator (47) and the epicoele of the first accumulator (47) and corresponding hydro-pneumatic spring (10) is connected, and makes propons
The arrival end of corresponding first accumulator (47) of hydro-pneumatic spring (10) homogeneously connects in all left side draft hitch of group；Propons group
The cavity of resorption of hydro-pneumatic spring (10) is connected with the second one-way throttle valve (56) and the second accumulation of energy in turn in all right side draft hitch
Device (57) simultaneously makes the second accumulator (57) be connected with the epicoele of corresponding hydro-pneumatic spring (10), and make all right side suspensions of propons group
The arrival end of corresponding second accumulator (57) of hydro-pneumatic spring (10) homogeneously connects in device；All left side suspension dresses of back axle group
The cavity of resorption for putting middle hydro-pneumatic spring (10) is connected with the 3rd one-way throttle valve (66) and the 3rd accumulator (67) in turn and makes the 3rd
Accumulator (67) is connected with the epicoele of corresponding hydro-pneumatic spring (10), and makes hydro-pneumatic spring in all left side draft hitch of back axle group
(10) arrival end of corresponding 3rd accumulator (67) homogeneously connects；Hydro-pneumatic spring in all right side draft hitch of back axle group
(10) cavity of resorption be connected with the 4th one-way throttle valve (76) and the 4th accumulator (77) in turn and make the 4th accumulator (77) with
The epicoele connection of corresponding hydro-pneumatic spring (10), and make in all right side draft hitch of back axle group hydro-pneumatic spring (10) corresponding the
The arrival end of four accumulators (77) homogeneously connects.
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| CN201710303011.0A CN107116986B (en) | 2017-05-03 | 2017-05-03 | A kind of big stroke adjustment system of bodywork height for multi-axle heavy type vehicle |
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| CN107150564A (en) * | 2017-05-02 | 2017-09-12 | 北京航天发射技术研究所 | A kind of overall height adjustment control method and device for multi-axle heavy type vehicle |
| CN107914536A (en) * | 2017-11-22 | 2018-04-17 | 北京航天发射技术研究所 | The spacing hydro-pneumatic spring in the two poles of the earth and use its suspension hydraulic system |
| CN112009193A (en) * | 2020-09-11 | 2020-12-01 | 泰安航天特种车有限公司 | Anti adjustable oil gas suspension hydraulic system that heels |
| CN114132132A (en) * | 2021-12-06 | 2022-03-04 | 浙江吉利控股集团有限公司 | Suspension height control system and method and vehicle |
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