CN109203860A - Vehicle bridge balancing device and aerial work platform - Google Patents
Vehicle bridge balancing device and aerial work platform Download PDFInfo
- Publication number
- CN109203860A CN109203860A CN201811357998.5A CN201811357998A CN109203860A CN 109203860 A CN109203860 A CN 109203860A CN 201811357998 A CN201811357998 A CN 201811357998A CN 109203860 A CN109203860 A CN 109203860A
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- vehicle bridge
- balancing device
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- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 96
- 239000002828 fuel tank Substances 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The present invention relates to a kind of vehicle bridge balancing device and aerial work platforms, wherein, vehicle bridge balancing device includes: two balancing cylinders (2), respective first end is hingedly connected on vehicle frame (4), and second end is hingedly connected on vehicle bridge (1) and is located at the left and right sides for swinging tie point (O) with vehicle frame (4)；Two on-off valve groups make two balancing cylinders (2) be in quick condition in an on state, in the off state, two balancing cylinders (2) are made to be in locking state；With reversal valve (5), it is located on the control oil circuit of two on-off valve groups, under the first working position, make on-off valve group in an ON state, under the second working position, it is in an off state on-off valve group, and oil liquid is made to pass through the size chamber that reversal valve (5) add to two balancing cylinders (2).Such structure is not only able to satisfy demand of the vehicle under different operating operating condition, and in the state that balancing cylinder is locked by vehicle bridge, balancing cylinder can be made reliably to lock.
Description
Technical field
The present invention relates to technical field of engineering machinery more particularly to a kind of vehicle bridge balancing devices and aerial work platform.
Background technique
Self-propelled aloft working platform is mainly used in the industries such as construction, steel construction, venue and lease, work when most
The surface condition for making place is poor, and hollow and barrier are more, and vehicle needs often to change working position in operation process
It sets or transition, therefore driveability to vehicle and very high to road surface Capability Requirement is adapted to.
Current aerial work platform tandem axle and chassis are all rigid connections, when traveling is on rugged ground
When, it may appear that the case where each driving wheel cannot land simultaneously, hanging wheel idle running, the driving force for causing vehicle to advance is insufficient.
Summary of the invention
The purpose of the present invention is to propose to a kind of vehicle bridge balancing device and aerial work platforms, can preferably meet vehicle and exist
Demand under different operating conditions.
According to an aspect of the invention, it is proposed that a kind of vehicle bridge balancing device, two balancing cylinders, respective first end difference
It is articulated on vehicle frame, second end is hingedly connected in vehicle bridge and is located at the left and right sides for swinging tie point with vehicle frame；
Two on-off valve groups are correspondingly arranged with two balancing cylinders, are configured as in an on state, making two equilibrium oils
Cylinder is in quick condition, in the off state, two balancing cylinders is made to be in locking state；With
Reversal valve is located on the control oil circuit of two on-off valve groups, is configured as under the first working position, makes on-off valve group
In an ON state, under the second working position, it is in an off state on-off valve group, and oil liquid is made to add to two by reversal valve
The size chamber of a balancing cylinder.
Further, reversal valve is in the first working position under vehicle to run operating condition, in the under vehicle operation operating condition
Two working positions.
Further, the control oil circuit of two on-off valve groups has public oil circuit, and reversal valve is located on public oil circuit.
Further, reversal valve is two position and four-way reversing valves.
Further, the oil liquid for controlling oil circuit is derived from the oil inlet oil circuit of vehicle to run executive component.
Further, vehicle bridge balancing device further includes the shuttle valve positioned at reversal valve upstream, two oil inlets difference of shuttle valve
It is connected to walking enclosed pump oil inlet and outlet, oil outlet is connected to the oil inlet of reversal valve.
Further, on-off valve group includes two balanced valves, is connected to respectively with the size chamber of corresponding balancing cylinder, and two flat
The control terminal connection of weighing apparatus valve, under the first working position, oil liquid controls each balanced valve by reversal valve and opens reversal valve, makes two to put down
The size chamber of weighing apparatus oil cylinder is connected to fuel tank；Under the second working position, each balanced valve is closed, and makes the size chamber of two balancing cylinders
It is connected to fuel tank disconnection.
Further, vehicle bridge balancing device further includes check valve, is arranged in parallel with on-off valve group, to be in the in reversal valve
When two working positions are in an off state on-off valve group, oil liquid is made to add to the size chamber of corresponding balancing cylinder by check valve.
Further, vehicle bridge balancing device is integrally provided at getting off for vehicle.
Further, two balancing cylinders are articulated with the preceding bridge of vehicle.
According to another aspect of the invention, it is proposed that a kind of aerial work platform, the vehicle bridge including above-described embodiment balances dress
It sets.
Based on the above-mentioned technical proposal, the vehicle bridge balancing device of the embodiment of the present invention, by two on-off valve groups and two balances
Oil cylinder is correspondingly arranged, and reversal valve is arranged on the control oil circuit of two on-off valve groups, for making on-off under the first working position
Valve group in an ON state, so that two balancing cylinders be made to be in quick condition；Under the second working position, make at on-off valve group
In off-state, so that two balancing cylinders be made to be in locking state, and oil liquid is made to add to two equilibrium oils by reversal valve
The size chamber of cylinder.Such vehicle bridge balancing device can not only meet the needs of vehicle is under different operating operating condition, and balance
In the state that oil cylinder locks vehicle bridge, balancing cylinder can be made reliably to lock, improve the reliability of vehicle operation.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of one embodiment of vehicle bridge balancing device of the present invention；
Fig. 2 is the hydraulic system principle figure of one embodiment of vehicle bridge balancing device of the present invention.
Description of symbols
1, vehicle bridge；2, balancing cylinder；3, balanced valve；4, vehicle frame；5, reversal valve；6, shuttle valve；7, check valve.
Specific embodiment
The present invention described further below.In the following paragraphs, the different aspect of embodiment is defined in more detail.So
The various aspects of restriction can be combined with any other one aspect or many aspects, can not be combined unless explicitly stated otherwise.Especially,
It is considered as preferred or advantageous any feature can be considered as preferred or advantageous feature group with other one or more
It closes.
The terms descriptions merely for convenience such as " first " that occurs in the present invention, " second " have same names to distinguish
Different building blocks, be not offered as successively or primary-slave relation.
In the description of the present invention, the instruction such as "upper", "lower", "top", "bottom", "front", "rear", "inner" and "outside" is used
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention, rather than
The device of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limiting the scope of the invention.Front and back cited below is consistent with the front-rear direction that track rail assembly is advanced.
Such as Fig. 1 and Fig. 2, the present invention provides a kind of vehicle bridge balancing devices, are mounted between vehicle bridge 1 and vehicle frame 4, vehicle frame 4
Above vehicle bridge 1, as shown in Figure 1, the bottom of vehicle frame 4 is equipped with adapter, it is hinged in free end and vehicle bridge 1, for example, passing through
Pin shaft along the setting of vehicle front-rear direction carries out hingedly, so that realizing vehicle bridge 1 by swinging tie point O between vehicle bridge 1 and vehicle frame 4
Swing up and down.Preferably, the intermediate region that tie point O is located at vehicle bridge 1 is swung.
In a schematical embodiment, vehicle bridge balancing device includes: that 5, two balancing cylinders 2 of reversal valve and two are logical
Disconnected valve group.Wherein, two respective first ends of balancing cylinder 2 are hingedly connected on vehicle frame 4, and second end is hingedly connected to vehicle bridge 1
The left and right sides that is upper and being located at swing tie point O, two respective first ends of balancing cylinder 2 can be respectively hinged at adapter second
The left and right sides at end, two balancing cylinders 2 can be symmetrical arranged relative to vehicle middle line, convenient for controlling the stress and steering of vehicle bridge 1
Angle.For example, the cylinder rod of balancing cylinder 2 can be hinged in vehicle bridge 1, cylinder barrel can be hinged on vehicle frame 4.Two balancing cylinders 2 are set
It sets in the bottom of vehicle bridge 1, to realize that the both ends of vehicle bridge 1 are swung up and down relative to vehicle frame 4 around tie point O is swung, Fig. 1 is intended merely to
Signal is clear and draws balancing cylinder 2 in the horizontal plane.
Two on-off valve groups are correspondingly arranged with two balancing cylinders 2, are configured as in an on state, making two equilibrium oils
Cylinder 2 is in quick condition, and the size chamber of two balancing cylinders 2 is connected to, i.e., each cavity of two balancing cylinders 2 connects
It is logical；In the off state, two balancing cylinders 2 are made to be in locking state, i.e., between the size chamber of single balancing cylinder 2 and two
It is isolated between a balancing cylinder 2, prevents the movement of two 2 piston rods of balancing cylinder.
Reversal valve 5 is located on the control oil circuit of two on-off valve groups, is used to open or closes the flexible of balancing cylinder 2, quilt
It is configured under the first working position, oil liquid is made to control on-off valve group in an ON state by reversal valve 5, to make two balances
Oil cylinder 2 is in quick condition；Under the second working position, it is in an off state on-off valve group, to make two balancing cylinders 2
In locking state, and oil liquid is made to pass through the size chamber that reversal valve 5 adds to two balancing cylinders 2.
In this embodiment, reversal valve 5 is in the first working position under vehicle to run operating condition, under vehicle operation operating condition
In the second working position.
Under vehicle to run operating condition, two balancing cylinders 2 do not stress, and are in free floating state, do not apply to vehicle bridge 1
Active force when vehicle to run process is by uneven road surface or barrier, can apply active force to tire, make vehicle bridge 1 in external force
It is swung up and down along the vertical direction as axis relative to vehicle frame 4 under effect using swinging tie point O, forces two balancing cylinders 2 flexible, put down
Oil liquid in weighing apparatus oil cylinder 2 starts to flow to negative pressure cavity, if low on fuel, is supplemented from oil return line oil suction, and balance is kept
Oil cylinder 2 is oil-filled always.And balancing cylinder 2 does not apply active force to vehicle bridge 1, and the gravity of tire and vehicle body is made all to press to ground
Face can guarantee that each tire of vehicle all lands, and increase driving force, and make leveling of getting on the bus, improve the driving performance of vehicle.
Under vehicle operation operating condition, on-off valve group makes two balancing cylinders 2 be in locking state, and two balancing cylinders 2 are not
Movement, limitation vehicle bridge 1 can be improved safety when vehicle operation, prevent from making relative to the lower swing in the vertical direction of vehicle frame 4
Vehicle frame 4 shakes during industry.
Therefore, such vehicle bridge balancing device can satisfy demand of the vehicle under different operating operating condition, while meeting and being expert at
It walks under operating condition to the requirement of driving force and under working condition to the requirement of safety.
Moreover, oil liquid can be forced to add to two balancing cylinders 2 by reversal valve 5 under 2 locking state of balancing cylinder
Size chamber, the intracavitary repairing of the size of balancing cylinder 2 is sufficient, and oil cylinder will not be emptied generation due to the negative pressure oil suction under quick condition
Cavity reduces compression deformation of the oil cylinder under locking state, even if also can guarantee balancing cylinder in the case where continuous work
2 is reliable locked, so that vehicle bridge 1 and vehicle frame 4 is rigidly connected, can be improved the functional reliability of vehicle bridge balancing device, thus further
Guarantee that vehicle is got on the bus the safety of operation.Into balancing cylinder 2, the mode of repairing is not necessarily to periodically be vented balancing cylinder 2.
As shown in Fig. 2, the control oil circuit of two on-off valve groups has public oil circuit, reversal valve 5 is located on public oil circuit.This
Kind structure can be by being only arranged a reversal valve 5, while realizing the control to two groups of on-off valve groups, can simplify hydraulic system
Piping connection, and make two groups of on-off valve group synchronization actions, guarantee the consistency of two 2 states of balancing cylinder.Alternatively, two
A control oil circuit can also be respectively arranged in on-off valve group, be equipped with reversal valve on every control oil circuit.
In some embodiments, as shown in Fig. 2, reversal valve 5 is two position and four-way reversing valves 5, there is oil inlet P, oil return opening
T, actuator port A and B.When reversal valve 5 is in the first working position, oil inlet P is connected to actuator port A, control oil liquid pass through into
Hydraulic fluid port P and actuator port A reaches the control terminal of on-off valve group, makes on-off valve in an ON state, to make two balancing cylinders 2
In quick condition；When reversal valve 5 is in the second working position, the hydraulic oil for valve group control terminal of breaking passes through actuator port A and oil return
Mouth T oil return release, on-off valve group disconnect, so that two balancing cylinders 2 be made to be in locking state, oil inlet P and actuator port B connect
It passes to and forces repairing into two balancing cylinders 2.
For example, reversal valve 5 is solenoid valve, vehicle bridge balancing device may also include control unit, and control unit can be controlled and be changed
To the switching state of valve 5, to be switched over automatically according to vehicle working condition to reversal valve 5.In addition, reversal valve 5 is also possible to manually
Or pilot operated directional control valve.
In some embodiments, the oil liquid for controlling oil circuit is derived from the oil inlet oil circuit of vehicle to run executive component.Generally, it controls
The executive component of vehicle to run processed is motor, and hydraulic pump of getting off is motor fuel feeding to realize vehicle to run.Executive component in this way
Oil inlet end has pressure, oil liquid herein is drawn to the control pressure that not only can be used as on-off valve group, but also can lock in balancing cylinder 2
Repairing is carried out in the state of dead.It gets off from vehicle and takes oil that can reduce piping connection length, simplied system structure.
Further, vehicle bridge balancing device of the invention may also include the shuttle valve 6 positioned at 5 upstream of reversal valve, for being logical
The control oil circuit of disconnected valve group accesses power source.Two oil inlets of shuttle valve 6 are connected to walking enclosed pump oil inlet and outlet respectively, fuel-displaced
Mouth is connected to the oil inlet of reversal valve 5.By the way that shuttle valve 6 is arranged, can filter out larger in walking enclosed pump oil inlet and outlet C and D
Pressure, on-off can be made when vehicle is in driving cycle as the control pressure of on-off valve group or to 2 repairing of balancing cylinder
Valve group is reliably connected, so that vehicle bridge balancing device is sensitive reliable；In the case where vehicle is in working condition, can stablize sufficiently
The repairing into balancing cylinder 2 improves the locked reliability of vehicle bridge 1.
In some embodiments, vehicle bridge balancing device is integrally provided at getting off for vehicle.Hydraulic system is located under vehicle
Vehicle can make full use of vehicle chassis space, keep vehicle's center of gravity more stable, and convenient for obtaining from the oil inlet end of walking executive component
Pressure power.
In some embodiments, two balancing cylinders 2 are hingedly rigidly connected with the preceding bridge of vehicle, rear axle and vehicle frame 4.Generally
Ground, the preceding bridge of vehicle is for turning to, and bridge can make the steering of vehicle bridge balancing device and vehicle special before two balancing cylinders 2 are articulated with
Property is consistent.
In some embodiments, as shown in Fig. 2, on-off valve group include two balanced valves 3, respectively with corresponding balancing cylinder 2
The connection of size chamber, the control terminal connection of two balanced valves 3, reversal valve 5 under the first working position, controlled by reversal valve 5 by oil liquid
It makes each balanced valve 3 to open, is connected to the size chamber of two balancing cylinders 2 with fuel tank, two balancing cylinders 2 is made to be in floating type
State；Under the second working position, each balanced valve 3 is closed, and is connected to the size chamber of two balancing cylinders 2 with fuel tank disconnection, is made two
A balancing cylinder 2 is in locking state.
Specifically, corresponding two balanced valves 3 of each balancing cylinder 2, two respective first actuator port of balanced valve 3 difference
It is connected to the size chamber of balancing cylinder 2, respective second actuator port is connected to 5 actuator port B of reversal valve, balanced valve 3
Open or close the pressure control by 5 actuator port A of reversal valve.When the pressure that 5 actuator port A of reversal valve is provided reaches preset value
When, two balanced valves 3 are opened, and the size chamber of balancing cylinder 2 passes through balanced valve 3 and is connected to fuel tank.When 5 actuator port of reversal valve
When the pressure that A is provided is not up to preset value, two balanced valves 3 are closed, and the size chamber of balancing cylinder 2 is connected to fuel tank cutting.
By using balanced valve 3, it can realize that balancing cylinder 2 is cut between floating and locking state by way of hydraulic control
It changes, it is ensured that Reliability of Microprocessor, system response are sensitive.
Further, vehicle bridge balancing device of the invention further includes check valve 7, is arranged in parallel with on-off valve group, to change
When being in the second working position to valve 5 is in an off state on-off valve group, oil liquid is made to add to corresponding equilibrium oil by check valve 7
The size chamber of cylinder 2.
Specifically, as shown in Fig. 2, each balanced valve 3 is arranged in parallel a check valve 7, the second work is in reversal valve 5
When position keeps balanced valve 3 in the open state, the oil liquid in balancing cylinder 2 cannot be flowed out by check valve 7；It is in reversal valve 5
When second working position is in close state balanced valve 3, oil liquid is made to add to the size of corresponding balancing cylinder 2 by check valve 7
Chamber.
Below with reference to Fig. 1 and Fig. 2, to illustrate the specific work process of vehicle bridge balancing device of the present invention.In the specific implementation
In example, each 2 corresponding two balanced valves 3 of balancing cylinder and two check valves 7 are designed as integrated valve block.
When vehicle is in driving cycle, reversal valve 5 cutting shifts to the first working position (left position), shuttle valve 6 is from vehicle to run
Executing agency's oil inlet end draws oil liquid, by the oil inlet P of reversal valve 5 and the hydraulic fluid port of actuator port A and two integrated valve blocks
A1, A2 act on the control terminal of balanced valve 3, and balanced valve 3 is opened.
At this point, the second actuator port of the corresponding balanced valves 3 of two balancing cylinders 2 pass through respectively integrated valve block hydraulic fluid port B1,
B2 is connected to fuel tank, and each cavity of balancing cylinder 2 is mutually communicated, and is communicated simultaneously with oil return line, and balancing cylinder 2 is not substantially at this time
Stress is in free floating state, if crossing barrier at this time, vehicle frame 4 and preceding bridge 1 because external force can generate angle change,
Drive balancing cylinder 2 flexible, hydraulic oil starts to flow to negative pressure cavity in balancing cylinder 2, if low on fuel, inhales from oil return line
Oil is supplemented, and keeps oil cylinder oil-filled always.
When vehicle is in working condition, 5 power loss of reversal valve is switched to the second working position (right position), each 3 control mouth of balanced valve
It is connected to by A1, A2 of integrated valve block and the actuator port A of reversal valve with fuel tank, releases control pressure, balanced valve 3 is locked flat
Weigh oil cylinder 2.Second actuator port of each balanced valve 3 passes through hydraulic fluid port B1, B2 of integrated valve block and the actuator port B of reversal valve 5
It is connected to oil inlet P, shuttle valve 6 draws oil liquid from vehicle to run executing agency oil inlet end and passes sequentially through reversal valve 5 and check valve the last 7
System supplement balances oil cylinder, prevents sky cylinder phenomenon.Preferably, optional take away opens bigger balanced valve, can solve in this way
Because of the excessively high influence system acting sensitivity of oil pocket precompression caused by forcing repairing.
Secondly, the present invention also provides a kind of aerial work platform, the vehicle bridge balancing device including above-described embodiment.High-altitude
Job platform is that one kind has chassis special, is equipped with lifting arm support, and has professional operator to carry out operation and can be realized height
The vehicle of sky rescue or high altitude operation.
The aerial work platform of this embodiment of the invention is during travelling transition, when travelling on uneven road surface, can protect
It demonstrate,proves each tire all to land, increases driving force, and make leveling of getting on the bus, improve the driving performance of aerial work platform.In operation
Under operating condition, two balancing cylinders 2 are reliably locked by vehicle bridge 1, and vehicle bridge 1 and vehicle frame 4 is made to be rigidly connected, and working platform work can be improved
Safety when industry prevents the vehicle frame 4 in operation process from shaking, and improves operational security of getting on the bus.Such high altitude operation is flat
Platform can satisfy the demand under different operating operating condition, including the requirement under operating condition of walking to driving force and under working condition
Requirement to safety.
A kind of vehicle bridge balancing device provided by the present invention and aerial work platform are described in detail above.Herein
In apply specific embodiment principle and implementation of the present invention are described, the explanation of above embodiments is only used
In facilitating the understanding of the method and its core concept of the invention.It should be pointed out that for those skilled in the art,
Without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention, these improvement and modification
It falls into the protection scope of the claims in the present invention.
Claims (11)
1. a kind of vehicle bridge balancing device characterized by comprising
Two balancing cylinders (2), respective first end are hingedly connected on vehicle frame (4), and second end is hingedly connected on vehicle bridge (1)
And it is located at the left and right sides that tie point (O) is swung with vehicle frame (4)；
Two on-off valve groups are correspondingly arranged with two balancing cylinders (2), are configured as in an on state, making two institutes
It states balancing cylinder (2) and is in quick condition, in the off state, two balancing cylinders (2) is made to be in locking state；With
Reversal valve (5) is located on the control oil circuit of two on-off valve groups, is configured as under the first working position, makes on-off
Valve group in an ON state, under the second working position, is in an off state the on-off valve group, and changes oil liquid by described
The size chamber of two balancing cylinders (2) is added to valve (5).
2. vehicle bridge balancing device according to claim 1, which is characterized in that the reversal valve (5) is in vehicle to run operating condition
It is in first working position down, second working position is under vehicle operation operating condition.
3. vehicle bridge balancing device according to claim 1, which is characterized in that the control oil circuit tool of two on-off valve groups
There is public oil circuit, the reversal valve (5) is located on the public oil circuit.
4. vehicle bridge balancing device according to claim 1, which is characterized in that the reversal valve (5) is two four-way commutations
Valve (5).
5. vehicle bridge balancing device according to claim 1, which is characterized in that the oil liquid of the control oil circuit is derived from vehicle row
Walk the oil inlet oil circuit of executive component.
6. vehicle bridge balancing device according to claim 5, which is characterized in that further include being located at the reversal valve (5) upstream
Shuttle valve (6), two oil inlets of the shuttle valve (6) respectively with walking enclosed pump oil inlet and outlet be connected to, oil outlet is changed with described
It is connected to the oil inlet of valve (5).
7. vehicle bridge balancing device according to claim 1, which is characterized in that the on-off valve group includes two balanced valves
(3), it is connected to respectively with the size chamber of the corresponding balancing cylinder (2), the control terminal connection of two balanced valves (3), the commutation
Under the first working position, oil liquid controls each balanced valve (3) by the reversal valve (5) and opens valve (5), makes two equilibrium oils
The size chamber of cylinder (2) is connected to fuel tank；Under the second working position, each balanced valve (3) is closed, and makes two balancing cylinders
(2) size chamber is connected to fuel tank disconnection.
8. vehicle bridge balancing device according to claim 1, which is characterized in that further include check valve (7), with the on-off valve
Group is arranged in parallel, to make oil liquid when the reversal valve (5), which are in the second working position, is in an off state the on-off valve group
The size chamber of corresponding balancing cylinder (2) is added to by the check valve (7).
9. vehicle bridge balancing device according to claim 1, which is characterized in that the vehicle bridge balancing device is integrally provided at vehicle
Get off.
10. vehicle bridge balancing device according to claim 1, which is characterized in that two balancing cylinders (2) are articulated with vehicle
Preceding bridge.
11. a kind of aerial work platform, which is characterized in that including any vehicle bridge balancing device of claim 1~10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357998.5A CN109203860A (en) | 2018-11-15 | 2018-11-15 | Vehicle bridge balancing device and aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357998.5A CN109203860A (en) | 2018-11-15 | 2018-11-15 | Vehicle bridge balancing device and aerial work platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109203860A true CN109203860A (en) | 2019-01-15 |
Family
ID=64996490
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811357998.5A Pending CN109203860A (en) | 2018-11-15 | 2018-11-15 | Vehicle bridge balancing device and aerial work platform |
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| Country | Link |
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| CN (1) | CN109203860A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201841911U (en) * | 2010-10-15 | 2011-05-25 | 湖南星邦重工有限公司 | Floating hydraulic mechanism for axle |
| JP2013249197A (en) * | 2012-06-04 | 2013-12-12 | Aichi Corp | Hydraulic circuit of vehicle for high lift work |
| JP2014206224A (en) * | 2013-04-12 | 2014-10-30 | 古河ユニック株式会社 | Work vehicle traveling pressure oil supply device |
| CN104691270A (en) * | 2015-01-20 | 2015-06-10 | 徐州重型机械有限公司 | Axle balance control system of self-walking type aerial working vehicle |
| CN106494179A (en) * | 2016-11-23 | 2017-03-15 | 徐工消防安全装备有限公司 | Automatically controlled vehicle bridge balance system and apply the self-propelled aerial work platform of the system |
| CN209305242U (en) * | 2018-11-15 | 2019-08-27 | 徐工消防安全装备有限公司 | Vehicle bridge balancing device and aerial work platform |
-
2018
- 2018-11-15 CN CN201811357998.5A patent/CN109203860A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201841911U (en) * | 2010-10-15 | 2011-05-25 | 湖南星邦重工有限公司 | Floating hydraulic mechanism for axle |
| JP2013249197A (en) * | 2012-06-04 | 2013-12-12 | Aichi Corp | Hydraulic circuit of vehicle for high lift work |
| JP2014206224A (en) * | 2013-04-12 | 2014-10-30 | 古河ユニック株式会社 | Work vehicle traveling pressure oil supply device |
| CN104691270A (en) * | 2015-01-20 | 2015-06-10 | 徐州重型机械有限公司 | Axle balance control system of self-walking type aerial working vehicle |
| CN106494179A (en) * | 2016-11-23 | 2017-03-15 | 徐工消防安全装备有限公司 | Automatically controlled vehicle bridge balance system and apply the self-propelled aerial work platform of the system |
| CN209305242U (en) * | 2018-11-15 | 2019-08-27 | 徐工消防安全装备有限公司 | Vehicle bridge balancing device and aerial work platform |
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