CN207535976U - A kind of aerial work platform four-wheel steering hydraulic system - Google Patents
A kind of aerial work platform four-wheel steering hydraulic system Download PDFInfo
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- CN207535976U CN207535976U CN201721658801.2U CN201721658801U CN207535976U CN 207535976 U CN207535976 U CN 207535976U CN 201721658801 U CN201721658801 U CN 201721658801U CN 207535976 U CN207535976 U CN 207535976U
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Abstract
The utility model is related to a kind of aerial work platform four-wheel steering hydraulic systems.The aerial work platform four-wheel steering hydraulic system, it is characterised in that：Including the front steering oil cylinder being located on rear side of aerial work platform front steering drive axle, the rear steering oil cylinder being located on front side of aerial work platform rear steering drive axle, front steering hydraulic oil cylinder driving connection front steering drive axle, rear steering hydraulic oil cylinder driving connection rear steering drive axle.This is reasonable in design, novel, effectively reduce cost, convenience easy to maintenance, effectively prevent sensor angles closed-loop control, control simple and convenient, commissioning test is simple, the problem of effectively eliminating existing synchronism and hysteresis quality, it overhauls, safeguard more convenient, effectively increase the service life of complete machine.
Description
Technical field：
The utility model is related to a kind of aerial work platform four-wheel steering hydraulic systems.
Background technology：
Aerial work platform needs to carry out four-wheel steering at work, and at present, the four-wheel steering scheme used has following two
Kind：First, steering gear adds two steering cylinders；2nd, four steering cylinders add single valve control single cylinder to realize；Above two scheme has one
A little common features：Of high cost, repair is complicated, wherein, second of high failure rate (angle is added to use sensor closed-loop control), debugging
Using complexity.
Utility model content：
The utility model provides a kind of aerial work platform four-wheel steering hydraulic system, this is reasonable in design, novel,
Cost is effectively reduced, convenience easy to maintenance effectively prevents sensor angles closed-loop control, and control is simple and convenient, debugging fortune
Row is simple, the problem of effectively eliminating existing synchronism and hysteresis quality, overhauls, safeguards more convenient, effectively increases complete machine
Service life, suitable for being widely used to promote, solve problems of the prior art.
Used technical solution is the utility model to solve above-mentioned technical problem：
A kind of aerial work platform four-wheel steering hydraulic system, it is characterised in that：Including being located at aerial work platform forward
Front steering oil cylinder on rear side of drive axle, the rear steering oil cylinder being located on front side of aerial work platform rear steering drive axle, front steering
Hydraulic oil cylinder driving connects front steering drive axle, rear steering hydraulic oil cylinder driving connection rear steering drive axle；The front steering oil cylinder turns with rear
It is double rod two-way cylinders to oil cylinder, has the first left oil port A1 on the right side of front steering oil cylinder, have on the left of front steering oil cylinder
First right oil port B1 has the second left oil port B2 on the right side of rear steering oil cylinder, there is the second right oil port A2 on the left of rear steering oil cylinder；Institute
It states the first left oil port A1, the first right oil port B1, the second left oil port B2 and the second right oil port A2 and passes through course changing control valve group and hydraulic pressure
Pipeline is connected with the fuel tank being located on high flat job platform, and the oil outlet end of fuel tank is connected with oil pump.
The course changing control valve group includes a three position four-way electromagnetic valve I, a two-position two-way solenoid valve II and one or three four
Three-way electromagnetic valve III, the oil outlet of the fuel tank connect the P mouths of three position four-way electromagnetic valve I, 3-position 4-way electromagnetism by fluid pressure line
The A mouths of valve I connect the first left oil port A1 after connecting a check valve by fluid pressure line, and the first right oil port B1 is connected by fluid pressure line
The B mouths of three position four-way electromagnetic valve III and the P mouths of two-position two-way solenoid valve II, three position four-way electromagnetic valve III are connected after connecing a check valve
A mouths the B mouths of three position four-way electromagnetic valve I are connected by fluid pressure line, the P mouths of three position four-way electromagnetic valve III are connected by fluid pressure line
The second left oil port B2 is met, the T mouths of three position four-way electromagnetic valve III connect the second right oil port A2,3-position 4-way electromagnetism by fluid pressure line
T mouths and the T mouths of two-position two-way solenoid valve II of valve I connect the oil inlet end of fuel tank by pipeline.
The oil outlet of the oil pump is connected with an overflow valve.
Using the above structure, this is reasonable in design, novel for the utility model, effectively reduces cost, side easy to maintenance
Just, sensor angles closed-loop control is effectively prevented, control is simple and convenient, and commissioning test is simple, using front steering oil cylinder with after
Double rod two-way cylinders control of steering cylinder, the problem of effectively eliminating existing synchronism and hysteresis quality, maintenance is safeguarded
It is more convenient, the service life of complete machine is effectively increased, suitable for being widely used to promote.
Description of the drawings：
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the utility model course changing control valve group oil circuit connection figure.
Fig. 3 is status architecture schematic diagram when the utility model front-wheel turns left.
Fig. 4 is status architecture schematic diagram when the utility model front-wheel turns right.
Fig. 5 is status architecture schematic diagram when the utility model trailing wheel turns left.
Fig. 6 is status architecture schematic diagram when the utility model trailing wheel turns right.
Status architecture schematic diagram when Fig. 7 is the utility model left four-wheel steering.
Status architecture schematic diagram when Fig. 8 is the utility model right four-wheel steering.
Status architecture schematic diagram when Fig. 9 is the oblique steering in the utility model left side.
Figure 10 is the status architecture schematic diagram of the right oblique steering of the utility model.
In figure, 1 aerial work platform, 2 front steering oil cylinders, 3 rear steering oil cylinders, 4 fuel tanks, 5 oil pumps, 6 overflow valves, 7 three
Four way solenoid valve I, 8 two-position two-way solenoid valves II, 9 three position four-way electromagnetic valves III.
Specific embodiment：
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with novel.
As shown in Fig. 1-10, a kind of aerial work platform four-wheel steering hydraulic system, it is characterised in that：Including being located at height
Front steering oil cylinder 2 on rear side of 1 front steering drive axle of working platform is located on front side of 1 rear steering drive axle of aerial work platform
Rear steering oil cylinder 3, front steering oil cylinder 2 are drivingly connected front steering drive axle, and rear steering oil cylinder 3 is drivingly connected rear steering drive axle；
The front steering oil cylinder 2 and rear steering oil cylinder 3 are double rod two-way cylinders, and there is the first left oil on the right side of front steering oil cylinder 2
There is the first right oil port B1 in mouth A1, the left side of front steering oil cylinder 2, and there are the second left oil port B2, rear steering oil in the right side of rear steering oil cylinder 3
There is the second right oil port A2 in the left side of cylinder 3；The first left oil port A1, the first right oil port B1, the second left oil port B2 and the second right oil
Mouthful A2 is connected by course changing control valve group and fluid pressure line and the fuel tank 4 being located on the flat job platform 1 of height, fuel tank 4 it is fuel-displaced
End is connected with oil pump 5.
In order to simplify the connection structure of hydraulic circuit, ensure the convenient control of four-wheel steering, it is described convenient for maintenance and repair
Course changing control valve group includes a three position four-way electromagnetic valve I 7, a two-position two-way solenoid valve II 8 and a three position four-way electromagnetic valve III
9, the oil outlet of the fuel tank 4 connects the P mouths of three position four-way electromagnetic valve I 7, the A of three position four-way electromagnetic valve I 7 by fluid pressure line
Mouth passes through one list of fluid pressure line connection by connecting the first left oil port A1, the first right oil port B1 after fluid pressure line one check valve of connection
The B mouths of three position four-way electromagnetic valve III 9 and the P mouths of two-position two-way solenoid valve II 8, the A of three position four-way electromagnetic valve III 9 are connected after valve
Mouth connects the B mouths of three position four-way electromagnetic valve I 7 by fluid pressure line, and the P mouths of three position four-way electromagnetic valve III 9 are connected by fluid pressure line
The second left oil port B2 is met, the T mouths of three position four-way electromagnetic valve III 9 connect the second right oil port A2,3-position 4-way electricity by fluid pressure line
T mouths and the T mouths of two-position two-way solenoid valve II 8 of magnet valve I 7 connect the oil inlet end of fuel tank 4 by pipeline；The 3-position 4-way electricity
The commutation side of magnet valve I 7 is a1 ends, and the other end is b1 ends, and the opening end of two-position two-way solenoid valve II 8 is a2 ends, described three four
The commutation side of three-way electromagnetic valve III 9 is a3 ends, and the other end is b3 ends.
The oil outlet of the oil pump 5 is connected with an overflow valve 6.
Using the aerial work platform four-wheel steering hydraulic system of the utility model, when front-wheel is needed to turn left, make three
The b1 ends of position four-way solenoid valve I 7 obtain electric, and the oil in such fuel tank 4 can pass through three position four-way electromagnetic valve I under the action of oil pump 5
7 P mouths and A mouthfuls simultaneously pass through the left side that the first left oil port A1 enters 2 front steering oil cylinders, will push front steering oil cylinder 2 in this way
Front steering drive axle is driven to move right, the oil on 2 right side of front steering oil cylinder can be flowed back into fuel tank 4, realize the left-hand rotation of front-wheel；
When front-wheel is needed to turn right, the a1 ends of three position four-way electromagnetic valve I 7 is made to obtain electric, the oil in such fuel tank 4 can be in oil
Under the action of pump 5, by P mouths of three position four-way electromagnetic valve I 7 with B mouthfuls and pass through the first right oil port B1 and enter front steering oil cylinder 2
Right side, will push front steering oil cylinder 2 that front steering drive axle is driven to move left in this way, the oily meeting in the left side of front steering oil cylinder 2
It flows back into fuel tank 4, realizes the right-hand rotation of front-wheel；
When trailing wheel is needed to turn left, make the a1 ends of three position four-way electromagnetic valve I 7, two-position two-way solenoid valve II 8 and three four
The a3 ends of three-way electromagnetic valve III 9 obtain it is electric, in fuel tank 4 oil under the action of oil pump 5, pass sequentially through the P of three position four-way electromagnetic valve I 7
Mouth and B mouthfuls, the A mouths of three position four-way electromagnetic valve III 9 and T mouthfuls, the second right oil port A2 enter the right side of rear steering oil cylinder 3, rear to turn
Rear steering drive axle is driven to be moved to the left to oil cylinder 3, the oil in 3 left side of rear steering oil cylinder can be flowed back into fuel tank 4, realize trailing wheel
Left-hand rotation.
When trailing wheel is needed to turn right, make the a1 ends of three position four-way electromagnetic valve I 7, two-position two-way solenoid valve II 8 and three four
The b3 ends of three-way electromagnetic valve III 9 obtain it is electric, in fuel tank 4 oil under the action of oil pump 5, pass sequentially through the P of three position four-way electromagnetic valve I 7
Mouth and B mouthfuls, the A mouths of three position four-way electromagnetic valve III 9 and P mouthfuls, the second right oil port B2 enter the left side of rear steering oil cylinder 3, rear to turn
Rear steering drive axle is driven to move right to oil cylinder 3, the oil on 3 right side of rear steering oil cylinder can be flowed back into fuel tank 4, realize trailing wheel
Right-hand rotation.
When needing left four-wheel steering, i.e., front-wheel turns left, and trailing wheel turns right, and makes the b1 ends of three position four-way electromagnetic valve I 7
Obtained with the b3 ends of three position four-way electromagnetic valve III 9 it is electric, in fuel tank 4 oil under the action of oil pump 5, pass sequentially through 3-position 4-way electromagnetism
The P mouths of valve I 7 and the A mouthful left sides for entering front steering oil cylinder 2, the oil on the right side of front steering oil cylinder 2 flow back or pass through 3-position 4-way
The B mouths of solenoid valve III 9 and T mouthful are entered on the right side of rear steering oil cylinder 3, are entered before the oil in the left side of front steering oil cylinder 2 can drive
Steering and driving axle moves right, and realizes the left-hand rotation of front-wheel, enters the oil on the right side of rear steering oil cylinder 3 and rear steering can be driven to drive
Bridge is moved to the left, and realizes the right-hand rotation of trailing wheel.
When needing right four-wheel steering, i.e., front-wheel turns right, and trailing wheel turns left, and makes the a1 ends of three position four-way electromagnetic valve I 7
Obtained with the a3 ends of three position four-way electromagnetic valve III 9 it is electric, in fuel tank 4 oil under the action of oil pump 5, pass sequentially through 3-position 4-way electromagnetism
The P mouths of valve I 7 and B mouthfuls, the A mouths of three position four-way electromagnetic valve III 9 and T mouthfuls, the second left oil port A2 enter 3 right side of rear steering oil cylinder,
The oily P mouths that can be by three position four-way electromagnetic valve III 9 in 3 left side of rear steering oil cylinder and the B mouthfuls of right sides for entering front steering oil cylinder 2,
In the oily oil return to fuel tank 4 in I left side of three position four-way electromagnetic valve, entering the oil on 3 right side of rear steering oil cylinder can drive rear steering to drive
Dynamic bridge is moved to the left, and realizes the left-hand rotation of trailing wheel, is entered the oil on the right side of front steering oil cylinder 2 and can be driven front steering drive axle to the left
It is mobile, realize the right-hand rotation of front-wheel.
When needing left oblique steering, i.e., front-wheel turns left, and trailing wheel turns left, and makes the b1 ends of three position four-way electromagnetic valve I 7
Obtained with the a3 ends of three position four-way electromagnetic valve III 9 it is electric, in fuel tank 4 oil under the action of oil pump 5, pass sequentially through 3-position 4-way electromagnetism
The P mouths of valve I 7 and the A mouthful left sides for entering front steering oil cylinder 2, the oil on the right side of front steering oil cylinder 2 flow back or pass through 3-position 4-way
The B mouths of solenoid valve III 9 and P mouthful are entered on the left of rear steering oil cylinder 2, are entered before the oil in the left side of front steering oil cylinder 2 can drive
Steering and driving axle moves right, and realizes the left-hand rotation of front-wheel, enters the oil in the left side of rear steering oil cylinder 3 and rear steering can be driven to drive
Bridge moves right, and realizes the left-hand rotation of trailing wheel.
When needing right oblique steering, i.e., front-wheel turns right, and trailing wheel turns right, and makes the a1 ends of three position four-way electromagnetic valve I 7
Obtained with the b3 ends of three position four-way electromagnetic valve III 9 it is electric, in fuel tank 4 oil under the action of oil pump 5, pass sequentially through 3-position 4-way electromagnetism
The P mouths of valve I 7 and B mouthfuls, the A mouths of three position four-way electromagnetic valve III 9 and P mouthfuls, the second left oil port B2 enter 3 left side of rear steering oil cylinder,
The oily T mouths that can be by three position four-way electromagnetic valve III 9 on 3 right side of rear steering oil cylinder and the B mouthfuls of right sides for entering front steering oil cylinder 2,
In the oily oil return to fuel tank 4 in I left side of three position four-way electromagnetic valve, entering the oil in 3 left side of rear steering oil cylinder can drive rear steering to drive
Dynamic bridge moves right, and realizes the right-hand rotation of trailing wheel, enters the oil on the right side of front steering oil cylinder 2 and can drive front steering drive axle to the left
It is mobile, realize the right-hand rotation of front-wheel.
Above-mentioned specific embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or transformation made to the utility model embodiment all fall within the guarantor of the utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (3)
1. a kind of aerial work platform four-wheel steering hydraulic system, it is characterised in that：Including being located at aerial work platform front steering
Front steering oil cylinder on rear side of drive axle, the rear steering oil cylinder being located on front side of aerial work platform rear steering drive axle, front steering oil
Cylinder is drivingly connected front steering drive axle, rear steering hydraulic oil cylinder driving connection rear steering drive axle；The front steering oil cylinder 2 and rear steering
Oil cylinder 3 is double rod two-way cylinder, has the first left oil port A1 on the right side of front steering oil cylinder, there is the on the left of front steering oil cylinder
One right oil port B1 has the second left oil port B2 on the right side of rear steering oil cylinder, there is the second right oil port A2 on the left of rear steering oil cylinder；It is described
First left oil port A1, the first right oil port B1, the second left oil port B2 and the second right oil port A2 pass through course changing control valve group and hydraulic tube
Road is connected with the fuel tank being located on high flat job platform, and the oil outlet end of fuel tank is connected with oil pump.
2. a kind of aerial work platform four-wheel steering hydraulic system according to claim 1, it is characterised in that：The steering
Control valve group includes a three position four-way electromagnetic valve I, a two-position two-way solenoid valve II and a three position four-way electromagnetic valve III, the oil
The oil outlet of case connects the P mouths of three position four-way electromagnetic valve I by fluid pressure line, and the A mouths of three position four-way electromagnetic valve I pass through hydraulic tube
Road connects the first left oil port A1, the first right oil port B1 by connecting three after fluid pressure line one check valve of connection after connecting a check valve
The B mouths of position four-way solenoid valve III and the P mouths of two-position two-way solenoid valve II, the A mouths of three position four-way electromagnetic valve III pass through fluid pressure line
Connecting B mouths of three position four-way electromagnetic valve I, the P mouths of three position four-way electromagnetic valve III connect the second left oil port B2 by fluid pressure line, and three
The T mouths of position four-way solenoid valve III by fluid pressure line connect the second right oil port A2, T mouths of three position four-way electromagnetic valve I with two two
The T mouths of three-way electromagnetic valve II connect the oil inlet end of fuel tank by pipeline.
3. a kind of aerial work platform four-wheel steering hydraulic system according to claim 1, it is characterised in that：The oil pump
Oil outlet be connected with an overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658801.2U CN207535976U (en) | 2017-12-01 | 2017-12-01 | A kind of aerial work platform four-wheel steering hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658801.2U CN207535976U (en) | 2017-12-01 | 2017-12-01 | A kind of aerial work platform four-wheel steering hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207535976U true CN207535976U (en) | 2018-06-26 |
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ID=62616877
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721658801.2U Active CN207535976U (en) | 2017-12-01 | 2017-12-01 | A kind of aerial work platform four-wheel steering hydraulic system |
Country Status (1)
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| CN (1) | CN207535976U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813870A (en) * | 2017-12-01 | 2018-03-20 | 临工集团济南重机有限公司 | A kind of aerial work platform four-wheel steering hydraulic system |
| CN108891481A (en) * | 2018-07-17 | 2018-11-27 | 四川川龙拖拉机制造有限公司 | 4-wheel Steering Control System, carriage and four-wheel tractor |
-
2017
- 2017-12-01 CN CN201721658801.2U patent/CN207535976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813870A (en) * | 2017-12-01 | 2018-03-20 | 临工集团济南重机有限公司 | A kind of aerial work platform four-wheel steering hydraulic system |
| CN108891481A (en) * | 2018-07-17 | 2018-11-27 | 四川川龙拖拉机制造有限公司 | 4-wheel Steering Control System, carriage and four-wheel tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Patentee after: Lingong Heavy Machinery Co.,Ltd. Address before: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Patentee before: LINGONG GROUP JINAN HEAVY MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |