CN209305242U - Vehicle bridge balancing device and aerial work platform - Google Patents
Vehicle bridge balancing device and aerial work platform Download PDFInfo
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- CN209305242U CN209305242U CN201821879891.2U CN201821879891U CN209305242U CN 209305242 U CN209305242 U CN 209305242U CN 201821879891 U CN201821879891 U CN 201821879891U CN 209305242 U CN209305242 U CN 209305242U
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- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 95
- 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
- 238000005303 weighing Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 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
- 230000006872 improvement 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
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Abstract
The utility model 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 utility model relates to technical field of engineering machinery more particularly to a kind of vehicle bridge balancing device and high altitude operation are flat
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.
Utility model content
The purpose of this utility model is to propose a kind of vehicle bridge balancing device and aerial work platform, can preferably meet vehicle
Demand under different operating conditions.
One side according to the present utility model proposes a kind of vehicle bridge balancing device, two balancing cylinders, respective first end
It is hingedly connected 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.
Another aspect according to the present utility model proposes a kind of aerial work platform, and the vehicle bridge including above-described embodiment is flat
Weigh device.
Based on the above-mentioned technical proposal, the vehicle bridge balancing device of the utility model embodiment, by two on-off valve groups and two
Balancing cylinder is correspondingly arranged, and reversal valve is arranged on the control oil circuit of two on-off valve groups, for making under the first working position
On-off valve group in an ON state, so that two balancing cylinders be made to be in quick condition；Under the second working position, make on-off valve
Group is in an off state, so that two balancing cylinders be made to be in locking state, and so that oil liquid is added to two by reversal valve and is put down
The size chamber of weighing apparatus oil cylinder.Such vehicle bridge balancing device can not only meet the needs of vehicle is under different operating operating condition, Er Qie
In the state that balancing cylinder locks vehicle bridge, balancing cylinder can be made reliably to lock, improve the reliability of vehicle operation.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of one embodiment of the utility model vehicle bridge balancing device；
Fig. 2 is the hydraulic system principle figure of one embodiment of the utility model vehicle bridge balancing device.
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 utility model described further below.In the following paragraphs, the different aspect of embodiment is defined in more detail.
The various aspects so limited can be combined with any other one aspect or many aspects, can not be combined unless explicitly stated otherwise.Especially
It is, it is considered to be preferred or advantageous any feature can be considered as preferred or advantageous spy with other one or more
Sign combination.
The terms descriptions merely for convenience such as " first " that occurs in the utility model, " second ", with distinguish have it is identical
The different building blocks of title are not offered as successive or primary-slave relation.
"upper", "lower", "top", "bottom", "front", "rear", "inner" and "outside" etc. are used in the description of the present invention,
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and being merely for convenience of description, this is practical new
Type, rather than the device of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to scope of protection of the utility model.The front-rear direction one that front and back cited below and track rail assembly are advanced
It causes.
Such as Fig. 1 and Fig. 2, the utility model provides a kind of vehicle bridge balancing device, is mounted between vehicle bridge 1 and vehicle frame 4, vehicle
Frame 4 is located at 1 top of vehicle bridge, 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,
It is carried out hingedly by the pin shaft being arranged along vehicle front-rear direction, so that being realized between vehicle bridge 1 and vehicle frame 4 by swinging tie point O
Vehicle bridge 1 is swung 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, the vehicle bridge balancing device of the utility model may also include the shuttle valve 6 positioned at 5 upstream of reversal valve, be used for
Power source is accessed for the control oil circuit of on-off valve group.Two oil inlets of shuttle valve 6 are connected to walking enclosed pump oil inlet and outlet respectively,
Oil outlet is connected to the oil inlet of reversal valve 5.By the way that shuttle valve 6 is arranged, can filter out in walking enclosed pump oil inlet and outlet C and D
Biggish pressure can make as the control pressure of on-off valve group or to 2 repairing of balancing cylinder when vehicle is in driving cycle
On-off valve group is reliably connected, so that vehicle bridge balancing device is sensitive reliable；In the case where vehicle is in working condition, it can stablize and fill
Foot ground 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, the vehicle bridge balancing device of the utility model further includes check valve 7, is arranged in parallel with on-off valve group, with
When reversal valve 5, which is in the second working position, is in an off state on-off valve group, add to oil liquid by check valve 7 corresponding flat
The size chamber of weighing apparatus oil 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 the utility model vehicle bridge balancing device.It is specific at this
In embodiment, 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 utility model additionally provides a kind of aerial work platform, the vehicle bridge balancing device including above-described embodiment.
Aerial work platform is a kind of with chassis special, is equipped with lifting arm support, and having professional operator to operate can be real
Existing height rescue or the vehicle of high altitude operation.
The aerial work platform of the utility model embodiment is during travelling transition, when travelling on uneven road surface,
It can guarantee that each tire all lands, increase driving force, and make leveling of getting on the bus, improve the driving performance of aerial work platform.?
Under working condition, two balancing cylinders 2 are reliably locked by vehicle bridge 1, so that vehicle bridge 1 and vehicle frame 4 is rigidly connected, it is flat that idle job can be improved
Safety when platform operation prevents the vehicle frame 4 in operation process from shaking, and improves operational security of getting on the bus.Make in such high-altitude
Industry platform can satisfy the demand under different operating operating condition, including the requirement under operating condition of walking to driving force and in operation work
To the requirement of safety under condition.
A kind of vehicle bridge balancing device provided by the utility model and aerial work platform are described in detail above.
Specific embodiment used herein is expounded the principles of the present invention and embodiment, and above embodiments are said
The bright method and its core concept for being merely used to help understand the utility model.It should be pointed out that for the common of the art
For technical staff, without departing from the principle of this utility model, can also to the utility model carry out it is several improvement and
Modification, modifications and modifications also fall within the protection scope of the claims of the utility model.
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 |
|---|---|---|---|
| CN201821879891.2U CN209305242U (en) | 2018-11-15 | 2018-11-15 | Vehicle bridge balancing device and aerial work platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879891.2U CN209305242U (en) | 2018-11-15 | 2018-11-15 | Vehicle bridge balancing device and aerial work platform |
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| Publication Number | Publication Date |
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| CN209305242U true CN209305242U (en) | 2019-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109203860A (en) * | 2018-11-15 | 2019-01-15 | 徐工消防安全装备有限公司 | Vehicle bridge balancing device and aerial work platform |
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2018
- 2018-11-15 CN CN201821879891.2U patent/CN209305242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109203860A (en) * | 2018-11-15 | 2019-01-15 | 徐工消防安全装备有限公司 | Vehicle bridge balancing device and aerial work platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: XUZHOU XCMG SCHWING MACHINERY Co.,Ltd. Assignor: XCMG FIRE-FIGHTING SAFETY EQUIPMENT Co.,Ltd. Contract record no.: X2023980043879 Denomination of utility model: Vehicle bridge balance device and high-altitude operation platform Granted publication date: 20190827 License type: Common License Record date: 20231020 |
|
| EE01 | Entry into force of recordation of patent licensing contract |