CN108679019A - A kind of aerial working platform vehicle bridge floating system and control method - Google Patents
A kind of aerial working platform vehicle bridge floating system and control method Download PDFInfo
- Publication number
- CN108679019A CN108679019A CN201810860401.2A CN201810860401A CN108679019A CN 108679019 A CN108679019 A CN 108679019A CN 201810860401 A CN201810860401 A CN 201810860401A CN 108679019 A CN108679019 A CN 108679019A
- Authority
- CN
- China
- Prior art keywords
- way valve
- floating
- bridge
- vehicle bridge
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a kind of aerial working platform vehicle bridge floating systems, including：Vehicle bridge floating cylinder, balanced valve, check valve, rear axle floating control device, two position three-way valve, two position two-way valve, variable pump group part and electric ratio two position two-way valve, the vehicle bridge floating cylinder includes the left oil cylinder of preceding bridge and the right oil cylinder of preceding bridge, two groups of balanced valves are arranged on vehicle bridge floating cylinder, it is connected with two position three-way valve on balanced valve and is connect with rear axle floating control device by two position three-way valve, rear axle floating control device is connect by two position two-way valve with variable pump group part；Balanced valve is also connect with electric ratio two position two-way valve by two position three-way valve, and electric ratio two position two-way valve is connect with variable pump group part.The present invention controls the movement velocity and moving displacement of vehicle bridge floating cylinder according to the size of current of the aerial working platform vehicle body inclination angle of detection and aerial work platform travelling control pump, motor displacement size come ratio, achieve the purpose that more steady, safety, meets actual operation requirements.
Description
Technical field
The present invention relates to a kind of aerial working platform vehicle bridge floating system and control methods, belong to aerial work platform technology
Field.
Background technology
Aerial work platform, due to body sway, will cause to pacify when surmounting obstacles or by low-lying place to operating personnel
Full hidden danger, and vehicle body is it is also possible to be difficult to surmount obstacles.In order to improve the ride comfort of aerial work platform traveling and manipulate steady
Qualitative, present common practice is that preceding bridge adds the pattern of floating cylinder, rear axle rigid using directly coupling with vehicle frame using swing axle
Property bridge；Aerial working platform vehicle bridge floating system, can making aerial work platform, vehicle bridge is in quick condition to disappear when walking
Except compression shock.Currently, aerial work platform in the prior art is (as shown in Figure 1, include：1- check valves；2- balanced valves；3-
Vehicle bridge floating cylinder；4- two-position four-way valves；5- is pumped；6- overflow valves) in motion, two-position four-way valve (Fig. 1 sequences 4) obtains electric, pump (figure
1 sequence 5) output fluid by two-position four-way valve (Fig. 1 sequences 4) open four balanced valves (Fig. 1 sequences 2), two vehicle bridge floating cylinders
Intercommunication, making aerial work platform, floating axle is in quick condition to eliminate compression shock when driving；Stop when driving, two-position four-way
Solenoid valve (Fig. 1 sequences 4) dead electricity, two vehicle bridge floating cylinders are fully locked carries out height to ensure that aerial work platform stops traveling
Locate to be in stable state when operation；The main function of four check valves (Fig. 1 sequences 1) is, in any chamber pressure of vehicle bridge floating cylinder
When power is reduced to return oil pressure following pressures, the chamber repairing is given by fluid back pressure, prevents from floating caused by oil compensation pressure deficiency
There is vacuum in oil cylinder.This aerial work platform has the following technical problems：(1) when aerial work platform travels and starts, no
Whether pipe encounters barrier, no matter barrier is just, and can all open four balanced valves makes two vehicle bridge floating cylinder intercommunications, causes
Vehicle body float angle can be kept larger because of inertia when (often speed of operation is big) or barrier on flatter road surface are smaller,
Causing comfort to decline even has security risk；(2) when tire is pressed on barrier or in low-lying place, main function is to make
Four tires are contacted with ground, can be made entire vehicle body or so or be tilted forward and back, it is difficult to ensure vehicle body level.For this reason, it may be necessary to design
A kind of new technical solution, which is given, to be solved.
Invention content
The present invention is the electric current pumped according to the aerial working platform vehicle body inclination angle of detection and aerial work platform travelling control
Size, motor displacement size carry out the movement velocity and moving displacement of ratio control vehicle bridge floating cylinder, so that aerial work platform
When driving, achieve the purpose that more steady, safety, meet actual operation requirements.
To solve the above problems, the technical solution used in the present invention is as follows：
A kind of aerial working platform vehicle bridge floating system, including：Vehicle bridge floating cylinder, balanced valve, check valve, rear axle float
Control device, two position three-way valve, two position two-way valve, hydraulic oil container, pipeline, variable pump group part and electric ratio two position two-way valve, institute
It includes the left oil cylinder of preceding bridge and the right oil cylinder of preceding bridge to state vehicle bridge floating cylinder, and two groups of balances are arranged on the vehicle bridge floating cylinder
Valve is connected with two position three-way valve on the balanced valve and by two position three-way valve and the rear axle floating control device, hydraulic oil
Case connects, and the rear axle floating control device is connect by two position two-way valve, pipeline with the variable pump group part；
The balanced valve is also connect with the electric ratio two position two-way valve by two position three-way valve, the electricity ratio two two
Port valve is connect with the variable pump group part.
As an improvement of the above technical solution, it is connected with the check valve being used cooperatively on the balanced valve.
As an improvement of the above technical solution, step (1)：When aerial work platform, which travels, to be started, two position two-way valve
Solenoid valve Y3 obtain it is electric, pump set up higher pressure but be in minimum discharge capacity, may be implemented it is energy saving, it is standby；
Step (2)：When the electric current of travelling control pump is more than certain value, running motor discharge capacity is less than certain value, illustrate vehicle
Fast higher (also illustrating that road surface is flatter), speed is more than certain value v1, and in addition to Y3, other solenoid valves must not be electric, and vehicle bridge is floating
Dynamic oil cylinder is in the lock state；
(3) when the electric current of travelling control pump is less than certain value, running motor discharge capacity is more than certain value, illustrate that speed is relatively supported
(also illustrating that Uneven road is smooth), speed are less than certain value v1.
As an improvement of the above technical solution, step (a)：When current two tires of bridge while upper barrier, according to detection
The size of the car body obliqueness arrived, inclination direction, come control electric ratio two position two-way valve electric current size (inclination angle more high current more
Greatly)；If inclination angle is more than certain value n1, two position three-way valve Y1b, Y2b obtain electric, two vehicle bridge floating cylinder retractions of preceding bridge, simultaneously
It controls two vehicle bridge floating cylinders of rear axle floating control device rear axle to stretch out, until reaching car body obliqueness requirement；
Step (b)：If two tires of preceding bridge travel on the low-lying place on road surface, according to the car body obliqueness detected
Size, inclination direction, to control the size of electric ratio two position two-way valve electric current (inclination angle more high current is bigger)；If inclination angle is more than
Certain value n2, two position three-way valve Y1a, Y2a obtain electric, two vehicle bridge floating cylinders stretchings of preceding bridge, while controlling rear axle floating control
Two vehicle bridge floating cylinder retractions of device rear axle, until reaching car body obliqueness requirement；
Step (c)：In current bridge left tire when barrier, according to the size of the car body obliqueness detected, inclination direction, come
The size (inclination angle more high current is bigger) of the electric ratio two position two-way valve electric current of control, while two position three-way valve Y1b obtains electric, a preceding bridge left side
Vehicle bridge floating cylinder bounces back, until reaching car body obliqueness requirement, if on preceding bridge right wheel tire when barrier, Y2b obtains electric, controlling party
Formula is identical；
Step (d)：When preceding bridge left tire is in the low-lying place on road surface, according to the size of the car body obliqueness detected, inclination angle
Direction, to control the size (inclination angle more high current is bigger) of electric ratio two position two-way valve electric current, while two position three-way valve Y1a is obtained
Electricity, the preceding left vehicle bridge floating cylinder of bridge stretches out, until reaching car body obliqueness requirement；If preceding bridge right wheel tire is in the low-lying place on road surface
When, Y2a obtains electric, and control mode is identical；
Step (e)：The control mode of rear axle is identical as preceding bridge.
As an improvement of the above technical solution, in step (a), if the car body obliqueness detected is less than certain value n1, only
Two vehicle bridge floating cylinder retractions of bridge, the floating cylinder of rear axle do not stretch out before control, to promote the resolution ratio of control.
As an improvement of the above technical solution, in step (b), if the car body obliqueness detected is less than certain value n2, only
Two vehicle bridge floating cylinders of bridge stretch out before control, and the floating cylinder of rear axle does not bounce back, to promote the resolution ratio of control.
Compared with prior art, implementation result of the invention is as follows by the present invention：
(1) present invention is to determine that vehicle bridge floating system is to work, be also locked out according to speed, the size of car body obliqueness,
It can improve the flexibility of control preferably according to operating conditions, also improve the ease of use of product.
(2) at four tires of vehicle body of the present invention vehicle body angle can with independent control, can also control simultaneously, the precision of control
Higher, cruising characteristic is more preferable.
Description of the drawings
Fig. 1 is this aerial working platform vehicle bridge floating system structural schematic diagram in the prior art；
Fig. 2 is aerial working platform vehicle bridge floating system structural schematic diagram of the present invention.
Specific implementation mode
Illustrate present disclosure below in conjunction with specific embodiments.
As shown in Figure 1 to Figure 2, it is aerial working platform vehicle bridge floating system structural schematic diagram of the present invention.
Aerial working platform vehicle bridge floating system of the present invention, including：Vehicle bridge floating cylinder 1, balanced valve 2, rear axle
Floating control device 4, two position three-way valve 5, two position two-way valve 6, hydraulic oil container, pipeline, variable pump group part 7 and electric ratio two two
Port valve 8, vehicle bridge floating cylinder 1 include the left oil cylinder 11 of preceding bridge and the right oil cylinder 12 of preceding bridge, and two groups are arranged on vehicle bridge floating cylinder 1
Balanced valve 2 is connected with two position three-way valve 5 on balanced valve 2 and by two position three-way valve 5 and rear axle floating control device 4, hydraulic oil
Case connects, and rear axle floating control device 4 is connected by two position two-way valve 6, pipeline and variable pump group part 7；The balanced valve 2 passes through
Two position three-way valve 5 is also connect with electric ratio two position two-way valve 8, and electric ratio two position two-way valve 8 is connect with variable pump group part 7, described
The check valve 3 being used cooperatively is connected on balanced valve 2.
The electricity that the present invention is mainly pumped according to the aerial working platform vehicle body inclination angle of detection and aerial work platform travelling control
Stream size, motor displacement size carry out the movement velocity and moving displacement of ratio control vehicle bridge floating cylinder, so that working at height is flat
Platform when driving, achievees the purpose that more steady, safety.It should be noted that control aerial work platform traveling is another set of
System is made of other pump, motor, valve etc., and the coherent signal in this system is only used as control vehicle bridge floating system control
Input signal is not described in detail.
First, when aerial work platform, which travels, to be started, the solenoid valve Y3 of two position two-way valve 6 (Fig. 2 sequences 6) obtains electric, variable
Pump group part 7 (Fig. 2 sequences 7) sets up higher pressure (but being in minimum discharge capacity, may be implemented energy saving), in shape of awaiting orders
State.
When the electric current of travelling control variable pump group part is more than certain value, running motor discharge capacity is less than certain value, illustrate vehicle
Fast higher (also illustrating that road surface is flatter), speed is more than certain value v1, and other than Y3, other solenoid valves must not be electric, vehicle bridge
Floating cylinder 1 is in the lock state.
When the electric current of travelling control variable pump group part is less than certain value, running motor discharge capacity is more than certain value, illustrate vehicle
For speed compared with (also illustrating that Uneven road is smooth) is supported, speed is less than certain value v1.
Hereafter, when two tires of current bridge go up barrier simultaneously, according to the size of the car body obliqueness detected, inclination angle side
To control the size of electric ratio two position two-way valve 8 (Fig. 2 sequences 8) electric current (inclination angle more high current is bigger)；If inclination angle is more than one
Definite value n1, two position three-way valve 5Y1b, Y2b obtain electric, two retractions of vehicle bridge floating cylinders 1 of preceding bridge；Control rear axle floating control simultaneously
Two vehicle bridge floating cylinders 1 of device 4 (Fig. 2 sequences 4) rear axle stretch out, until reaching car body obliqueness requirement；It should be noted that if
The car body obliqueness detected is less than certain value n1, and two vehicle bridge floating cylinders 1 of bridge bounce back before only controlling, and the floating cylinder of rear axle is not
It stretches out, to promote the resolution ratio of control.
If two tires of preceding bridge travel on the low-lying place on road surface, according to the size of the car body obliqueness detected, incline
Angular direction, to control the size of electric ratio two position two-way valve 8 (Fig. 2 sequences 8) electric current (inclination angle more high current is bigger)；If inclination angle is big
Electric, two stretchings of vehicle bridge floating cylinders 1 of preceding bridge are obtained in certain value n2, two position three-way valve 5Y1a, Y2a；Rear axle floating is controlled simultaneously
Two vehicle bridge floating cylinders 1 of control device 4 (Fig. 2 sequences 4) rear axle bounce back, until reaching car body obliqueness requirement；It should be noted that
If the car body obliqueness detected is less than certain value n2, two vehicle bridge floating cylinders 1 of bridge stretch out before only controlling, the floating oil of rear axle
Cylinder does not bounce back, to promote the resolution ratio of control.
In current bridge left tire when barrier, according to the size of the car body obliqueness detected, inclination direction, to control electric ratio
The size (inclination angle more high current is bigger) of example two position two-way valve 8 (Fig. 2 sequences 8) electric current, while two position three-way valve 5Y1b obtains electric, preceding bridge
Left vehicle bridge floating cylinder 1 bounces back, until reaching car body obliqueness requirement；If on preceding bridge right wheel tire when barrier, Y2b obtains electric, control
Mode processed is similar to be repeated no more.
When preceding bridge left tire is in the low-lying place on road surface, according to the size of the car body obliqueness detected, inclination direction, to control
The size (inclination angle more high current is bigger) of electric 8 (Fig. 2 sequences 8) electric current of ratio two position two-way valve of system, while two position three-way valve 5Y1a is obtained
Electricity, the preceding left vehicle bridge floating cylinder 1 of bridge stretches out, until reaching car body obliqueness requirement；If preceding bridge right wheel tire is in the low-lying of road surface
When place, Y2a obtains electric, and control mode is similar to be repeated no more.
Finally, the control mode of rear axle, it is similar to preceding bridge, it repeats no more.
Note 1：The present invention is to determine that vehicle bridge floating system works or locks according to speed, the size of car body obliqueness
It is fixed, it can improve the flexibility of control preferably according to operating conditions, also improve the ease of use of product；In addition, this
At four tires of invention vehicle body vehicle body angle can with independent control, can also control simultaneously, the precision of control is higher, smooth ride
Property is more preferable.
Note 2：The design source of core of the invention point includes：A kind of vehicle bridge floating system；It is a kind of electric according to traveling pump
Stream, running motor discharge capacity are come the method that detects aerial working platform vehicle speed；It is a kind of to be floated according to speed, car body obliqueness to control vehicle bridge
The control method of dynamic system；A kind of aerial work platform of the application vehicle bridge floating system.
The foregoing is a detailed description of the present invention in conjunction with specific embodiments, and it cannot be said that the present invention is specifically real
It applies and is only limitted to these explanations.For those skilled in the art to which the present invention belongs, before not departing from present inventive concept
It puts, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the scope of protection of the invention.
Claims (6)
1. a kind of aerial working platform vehicle bridge floating system, it is characterised in that：Including：Vehicle bridge floating cylinder (1), balanced valve (2),
Rear axle floating control device (4), two position three-way valve (5), two position two-way valve (6), hydraulic oil container, pipeline, variable pump group part (7) and
Electric ratio two position two-way valve (8), the vehicle bridge floating cylinder (1) include the left oil cylinder of preceding bridge (11) and the right oil cylinder of preceding bridge (12), institute
State and be arranged with two groups of balanced valves (2) on vehicle bridge floating cylinder (1), be connected on the balanced valve (2) two position three-way valve (5) and
It is connect with the hydraulic oil container, rear axle floating control device (4) by two position three-way valve (5), the rear axle floating control device
(4) it is connect with the variable pump group part (7) by two position two-way valve (6), pipeline；
The balanced valve (2) is also connect with the electric ratio two position two-way valve (8) by two position three-way valve (5), the electricity ratio
Two position two-way valve (8) is connect with the variable pump group part (7).
2. aerial working platform vehicle bridge floating system according to claim 1, it is characterised in that：Connect on the balanced valve (2)
It is connected to the check valve (3) being used cooperatively.
3. according to the control method of aerial working platform vehicle bridge floating system described in claim 1-2, it is characterised in that：Step
(1)：When aerial work platform, which travels, to be started, the solenoid valve Y3 of two position two-way valve (6) obtain it is electric, pump set up higher pressure but
It is in minimum discharge capacity, it can be achieved that energy saving, it is standby；
Step (2)：When travelling control pump electric current be more than certain value, running motor discharge capacity be less than certain value when, illustrate speed compared with
High (also illustrating that road surface is flatter), speed is more than certain value v1, and in addition to Y3, other solenoid valves must not be electric, and vehicle bridge is floated oily
Cylinder (1) is in the lock state；
Step (3) illustrates that speed is relatively supported when the electric current that travelling control pumps is less than certain value, running motor discharge capacity is more than certain value
(also illustrating that Uneven road is smooth), speed are less than certain value v1.
4. the control method of aerial working platform vehicle bridge floating system according to claim 3, it is characterised in that：Step (a)：
When current two tires of bridge while upper barrier, according to the size of the car body obliqueness detected, inclination direction, to control electric ratio
The size (inclination angle more high current is bigger) of two position two-way valve (8) electric current；If inclination angle is more than certain value n1, two position three-way valve (5)
Y1b, Y2b obtain electric, two vehicle bridge floating cylinder (1) retractions of preceding bridge, while controlling two vehicles of rear axle floating control device (4) rear axle
Bridge floating cylinder (1) stretches out, until reaching car body obliqueness requirement；
Step (b)：If two tires of preceding bridge travel on the low-lying place on road surface, according to the big of the car body obliqueness detected
Small, inclination direction, to control the size of electric ratio two position two-way valve (8) electric current (inclination angle more high current is bigger)；If inclination angle is big
Electric, two vehicle bridge floating cylinders (1) stretchings of preceding bridge are obtained in certain value n2, two position three-way valve (5) Y1a, Y2a, while controlling rear axle
Two vehicle bridge floating cylinder (1) retractions of floating control device (4) rear axle, until reaching car body obliqueness requirement；
Step (c)：In current bridge left tire when barrier, according to the size of the car body obliqueness detected, inclination direction, to control
The size (inclination angle more high current is bigger) of electric ratio two position two-way valve (8) electric current, while two position three-way valve (5) Y1b obtains electric, preceding bridge
Left vehicle bridge floating cylinder (11) retraction, until reach car body obliqueness requirement, if on preceding bridge right wheel tire when barrier, Y2b obtain it is electric,
Control mode is identical；
Step (d)：When preceding bridge left tire is in the low-lying place on road surface, according to the size of the car body obliqueness detected, inclination direction,
Control the size (inclination angle more high current is bigger) of electric ratio two position two-way valve (8) electric current, while two position three-way valve (5) Y1a is obtained
Electricity, the preceding left vehicle bridge floating cylinder (11) of bridge is stretched out, until reaching car body obliqueness requirement；If preceding bridge right wheel tire is in the low of road surface
When depression, Y2a obtains electric, and control mode is identical；
Step (e)：The control mode of rear axle is identical as preceding bridge.
5. the control method of aerial working platform vehicle bridge floating system according to claim 4, it is characterised in that：Step (a)
In, if the car body obliqueness detected is less than certain value n1, two vehicle bridge floating cylinder (1) retractions of bridge before only controlling, rear axle
Floating cylinder does not stretch out, to promote the resolution ratio of control.
6. the control method of aerial working platform vehicle bridge floating system according to claim 4, it is characterised in that：Step (b)
In, if the car body obliqueness detected is less than certain value n2, two vehicle bridge floating cylinders (1) of bridge are stretched out before only controlling, rear axle
Floating cylinder does not bounce back, to promote control resolution ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810860401.2A CN108679019A (en) | 2018-08-01 | 2018-08-01 | A kind of aerial working platform vehicle bridge floating system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810860401.2A CN108679019A (en) | 2018-08-01 | 2018-08-01 | A kind of aerial working platform vehicle bridge floating system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108679019A true CN108679019A (en) | 2018-10-19 |
Family
ID=63815934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810860401.2A Pending CN108679019A (en) | 2018-08-01 | 2018-08-01 | A kind of aerial working platform vehicle bridge floating system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108679019A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201932886U (en) * | 2010-11-29 | 2011-08-17 | 广西玉柴重工有限公司 | Floating and locking device for swing axle of aerial working platform |
| 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 |
| CN205478607U (en) * | 2016-01-08 | 2016-08-17 | 徐州重型机械有限公司 | Axle balance control system and high altitude construction car |
| 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 |
-
2018
- 2018-08-01 CN CN201810860401.2A patent/CN108679019A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201932886U (en) * | 2010-11-29 | 2011-08-17 | 广西玉柴重工有限公司 | Floating and locking device for swing axle of aerial working platform |
| 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 |
| CN205478607U (en) * | 2016-01-08 | 2016-08-17 | 徐州重型机械有限公司 | Axle balance control system and high altitude construction car |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205478607U (en) | Axle balance control system and high altitude construction car | |
| CN110937556B (en) | Crank arm type hydraulic system of overhead working truck | |
| CN102039791A (en) | Vehicle body dip angle adjusting unit, oil gas suspension mechanism and mobile crane | |
| CN102490565A (en) | Demand-based active anti-rollover hydraulic inline suspension system for heavy truck | |
| CN104691270B (en) | Self-travel type high-altitude operation vehicle vehicle bridge balance control system | |
| CN201971601U (en) | Three-wheel drive four-way static pressure forklift truck hydraulic system | |
| CN110497962B (en) | Volume servo integrated electro-hydraulic steering system of straddle carrier and control method thereof | |
| CN102910070A (en) | Vibration energy recovery system and automobile with same | |
| CN107813870A (en) | A kind of aerial work platform four-wheel steering hydraulic system | |
| CN108679019A (en) | A kind of aerial working platform vehicle bridge floating system and control method | |
| CN109515417A (en) | Brake fluid system and crane | |
| CN105329061A (en) | Damper bearing pressure intercommunication and conversion system enabling wheels to be changed up and down along with terrain | |
| CN201970815U (en) | Construction vehicle and dual-front-axle linkage front suspension system | |
| CN208278060U (en) | A kind of idler wheel trolley integrated system of the huge component of synchronizing moving | |
| CN205331089U (en) | Aircraft tractor double - circuit hydraulic drive system | |
| CN106082039A (en) | A kind of speed limiting safety system of high-order stacking door frame | |
| CN207630904U (en) | A kind of air suspension-hydraulic pressure interacted system and the vehicle using the system | |
| CN102390428B (en) | Control method of steering central shaft and hydraulic control system | |
| CN207630903U (en) | Hydraulic pressure interacted system and the vehicle for using the hydraulic pressure interacted system | |
| CN202389147U (en) | On-demand active anti-overturning hydraulic inline suspension system of heavy-duty truck | |
| CN203974933U (en) | The construction machinery and equipment skid steer system that a kind of front-wheel preferentially turns to | |
| CN204222964U (en) | Wagon drill | |
| CN105584526A (en) | Steering system for eight-wheel four-axle passenger car | |
| CN207535976U (en) | A kind of aerial work platform four-wheel steering hydraulic system | |
| CN206485591U (en) | Folding type static pressure bomb truck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |