CN108482485A - The all-hydraulic rear axle independent steering device of cylinder type and its operation principle - Google Patents
The all-hydraulic rear axle independent steering device of cylinder type and its operation principle Download PDFInfo
- Publication number
- CN108482485A CN108482485A CN201810544135.2A CN201810544135A CN108482485A CN 108482485 A CN108482485 A CN 108482485A CN 201810544135 A CN201810544135 A CN 201810544135A CN 108482485 A CN108482485 A CN 108482485A
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- CN
- China
- Prior art keywords
- valve
- rear axle
- nut
- steering
- leverage
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 230000007306 turnover Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D12/00—Steering specially adapted for vehicles operating in tandem or having pivotally connected frames
- B62D12/02—Steering specially adapted for vehicles operating in tandem or having pivotally connected frames for vehicles operating in tandem
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
- B62D5/083—Rotary valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/10—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
- B62D5/12—Piston and cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The present invention relates to a kind of all-hydraulic rear axle independent steering device of cylinder type and its operation principles, including preceding valve, preceding valve is connect with rear valve, preceding valve, the inside of valve is passed through by the screw rod of steering wheel afterwards, screw front end is matched with nut, nut is coated on outside screw front end, nut is located inside fixed displacement oil cylinder, nut outer surfaces are equipped with the first teeth portion, first teeth portion is engaged with the second teeth portion of leverage attachment device, leverage attachment device front end is connected with leverage one end, the leverage other end is connected with preceding bridge, oil cylinder in preceding bridge is connect by oil pipe with preceding valve, valve is connect by oil pipe with the oil cylinder in rear axle respectively with fixed displacement oil cylinder afterwards, the advantage of the invention is that：Simple in structure, compact, safe and reliable, use scope is extensively and cheap.
Description
Technical field
The present invention relates to a kind of all-hydraulic rear axle independent steering device of cylinder type and its operation principles.
Background technology
Full leverage multi-wheeler steering is that the high pressure oil distributed by hydraulic valve enters each bridge steering of steering cylinder promotion,
Correct steering relationship between each bridge is provided by the leverage between bridge, and leverage is rigidly connected, therefore can only between each bridge
It turns to together, can not achieve rear axle independent steering, is i.e. rear axle can together be turned to other bridges, can not also be with other bridges together
It turns to, as shown in Figure 1.
Electromagnetic servo valve rear axle independent steering system be with sensor measure before bridge steering angle, then computer according to
The steering angle of preceding bridge calculates the steering angle of rear axle, and last computer controls rear-axle steering oil cylinder reality by electromagnetic servo valve
Existing rear-axle steering, this rear-axle steering mode, system complex is of high cost, is unfavorable for promoting, as shown in Figure 2.
Invention content
Problems solved by the invention is to provide a kind of simple in structure, compact, safe and reliable, and use scope is extensively and cheap
The all-hydraulic rear axle independent steering device of cylinder type.
The purpose of the present invention is achieved through the following technical solutions：A kind of all-hydraulic rear axle independent steering device of cylinder type, packet
Include preceding valve, preceding valve is connect with rear valve, preceding valve, rear valve inside passed through by the screw rod of steering wheel, screw front end is matched with nut,
Nut is coated on outside screw front end, and nut is located inside fixed displacement oil cylinder, and nut outer surfaces are equipped with the first teeth portion, the first teeth portion
It is engaged with the second teeth portion of leverage attachment device, leverage attachment device front end is connected with leverage one end, and the leverage other end is connected with
Preceding bridge, the oil cylinder in preceding bridge are connect by oil pipe with preceding valve, and rear valve passes through oil pipe and the oil in rear axle respectively with fixed displacement oil cylinder
Cylinder connects.
Preferably, preceding valve, rear valve are guiding valve or rotary valve.
A kind of operation principle of the all-hydraulic rear axle independent steering device of cylinder type, steering wheel rotation are not set up in oil pressure
Before, preceding bridge keeps nut motionless by leverage, therefore axial float occurs for screw rod, and preceding valve is opened, and high pressure oil enters in preceding bridge
The preceding bridge of steering cylinder, preceding bridge rotation, rotation makes nut generate axial movement, nut drives screw rod dynamic to anti-channeling by leverage
Direction is moved, and valve, which is realized, to be servo-actuated, and preceding bridge realizes and continuously turn to that while preceding valve is opened, rear valve also opens simultaneously, rear valve high pressure
Oil enters back into the steering cylinder in rear axle after entering fixed displacement oil cylinder, and rear-axle steering, due to steering wheel per revolution, nut moves
A screw pitch is moved, nut is the piston of fixed displacement oil cylinder, therefore the oil mass of the steering cylinder entered in rear axle is a definite value, is
Piston area × screw pitch, so the angle of rear axle rotation is also a definite value, the number of turns and rear axle of such steering wheel rotation turn over
Angle just establish one-to-one relationship, as long as designing reasonable screw pitch and piston area, rear axle can be according to design
Steering relationship turned to.
In conclusion compared with prior art, advantageous effect of the present invention is：The all-hydraulic rear axle independent steering of cylinder type
Device eliminates sensor, computer system and electromagnetic servo valve system relative to electromagnetic servo valve rear axle independent steering system,
Therefore the steering gear has simple in structure, compact, safe and reliable, the wide and cheap feature of use scope.
Description of the drawings
Fig. 1 is the structure chart of the full leverage multi-wheeler steering of the prior art；
Fig. 2 is the structure chart of prior art electromagnetic servo valve rear axle independent steering system；
Fig. 3 is the structure chart of the present invention；
Fig. 4 is the partial cutaway view at this fixed displacement oil cylinder position；
Description of the drawings：Valve after valve, 2- before 1-, 3- steering wheels, 4- screw rods, 5- nuts, the first teeth portion of 6-, 7- leverages attachment device,
Bridge, 12- oil pipes, 13- rear axles before the second teeth portion of 8-, 9- fixed displacements oil cylinder, 10- leverages, 11-.
Specific implementation mode
Technical solution in the embodiment of the present invention is subjected to clear, complete description below, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
As shown in Figure 3,4, the present invention provides a kind of all-hydraulic rear axle independent steering device of cylinder type, including preceding valve 1, preceding valves
1 connect with rear valve 2, preceding valve 1, rear valve 2 be guiding valve or rotary valve, preceding valve 1, rear valve 2 inside passed through by the screw rod 4 of steering wheel 3, spiral shell
4 front end of bar is matched with nut 5, and nut 5 is coated on outside 4 front end of screw rod, and nut 5 is located inside fixed displacement oil cylinder 9, nut 5
Outer surface is equipped with the first teeth portion 6, and the first teeth portion 6 is engaged with the second teeth portion 8 of leverage attachment device 7,7 front end of leverage attachment device
It is connected with 10 one end of leverage, 10 other end of leverage is connected with preceding bridge 11, and the oil cylinder in preceding bridge 11 is connected by oil pipe 12 and preceding valve 1
It connects, rear valve 2 is connect by oil pipe 12 with the oil cylinder in rear axle 13 respectively with fixed displacement oil cylinder 9.
Its operation principle is：Steering wheel rotation 3, before oil pressure is not set up, preceding bridge 11 makes nut 5 by leverage 10
It is motionless, therefore axial float occurs for screw rod 4, preceding valve 1 is opened, and high pressure oil enters the steering cylinder in preceding bridge 11, and preceding bridge 11 rotates,
The preceding bridge 11 of rotation makes nut 5 generate axial movement by leverage 10, and nut 5 drives screw rod 4 to move direction to anti-channeling and moves, valve
It realizes and is servo-actuated, preceding bridge 11 realizes continuous steering.While preceding valve 1 is opened, rear valve 2 also opens simultaneously, and 2 high pressure oil of rear valve enters
The steering cylinder in rear axle 13 is entered back into after fixed displacement oil cylinder 9, rear axle 13 turns to.Due to 3 per revolution of steering wheel, nut 5
A mobile screw pitch, nut 5 is the piston of fixed displacement oil cylinder 9, therefore the oil mass of the steering cylinder entered in rear axle 13 is one
Definite value is piston area × screw pitch, so the angle that rear axle 13 rotates is also a definite value.The number of turns that steering wheel 3 rotates in this way
One-to-one relationship is just established with the angle that rear axle 13 turns over.As long as designing reasonable screw pitch and piston area, rear axle
13 can be turned to according to the steering relationship of design.
The all-hydraulic rear axle independent steering device of cylinder type relative to full leverage steering, it can be achieved that rear axle individually turns to, because
This steering has a variety of steering patterns, the flexible and changeable of steering is realized, to meet different steering requirements.
Claims (3)
1. a kind of all-hydraulic rear axle independent steering device of cylinder type, it is characterised in that：Including preceding valve（1）, the preceding valve（1）With rear valve
（2）Connection, the preceding valve（1）, rear valve（2）Inside by steering wheel（3）Screw rod（4）It passes through, the screw rod（4）Front end and spiral shell
It is female（5）It matches, the nut（5）It is coated on screw rod（4）Outside front end, the nut（5）It is located at fixed displacement oil cylinder（9）It is interior
Portion, the nut（5）Outer surface is equipped with the first teeth portion（6）, first teeth portion（6）With leverage attachment device（7）The second tooth
Portion（8）Engagement, the leverage attachment device（7）Front end is connected with leverage（10）One end, the leverage（10）The other end is connected with
Preceding bridge（11）, preceding bridge（11）Interior oil cylinder passes through oil pipe（12）With preceding valve（1）Connection, the rear valve（2）With fixed displacement oil cylinder（9）
Pass through oil pipe respectively（12）With rear axle（13）Interior oil cylinder connection.
2. the all-hydraulic rear axle independent steering device of cylinder type according to claim 1, it is characterised in that：The preceding valve（1）, after
Valve（2）For guiding valve or rotary valve.
3. a kind of operation principle of the all-hydraulic rear axle independent steering device of cylinder type, it is characterised in that：Steering wheel rotation 3, in oil pressure
Before not setting up, preceding bridge 11 keeps nut 5 motionless by leverage 10, therefore axial float occurs for screw rod 4, and preceding valve 1 is opened, high
Pressure oil enters the steering cylinder in preceding bridge 11, and preceding bridge 11 rotates, and the preceding bridge 11 of rotation makes nut 5 generate axial direction by leverage 10
Mobile, nut 5 drives screw rod 4 to move direction to anti-channeling and moves, and valve, which is realized, to be servo-actuated, and preceding bridge 11 realizes continuous steering, is opened in preceding valve 1
While, rear valve 2 also opens simultaneously, and 2 high pressure oil of rear valve enters back into the steering cylinder in rear axle 13 after entering fixed displacement oil cylinder 9,
Rear axle 13 turns to, and due to 3 per revolution of steering wheel, nut 5 moves a screw pitch, and nut 5 is the piston of fixed displacement oil cylinder 9,
Therefore it is a definite value into the oil mass of the steering cylinder in rear axle 13, is piston area × screw pitch, so what rear axle 13 rotated
As soon as angle is also a definite value, the angle that the number of turns and rear axle 13 of the rotation of such steering wheel 3 turn over establishes correspondingly
Relationship, as long as designing reasonable screw pitch and piston area, rear axle 13 can be turned to according to the steering relationship of design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544135.2A CN108482485A (en) | 2018-05-31 | 2018-05-31 | The all-hydraulic rear axle independent steering device of cylinder type and its operation principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544135.2A CN108482485A (en) | 2018-05-31 | 2018-05-31 | The all-hydraulic rear axle independent steering device of cylinder type and its operation principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108482485A true CN108482485A (en) | 2018-09-04 |
Family
ID=63351467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810544135.2A Pending CN108482485A (en) | 2018-05-31 | 2018-05-31 | The all-hydraulic rear axle independent steering device of cylinder type and its operation principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108482485A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467013A (en) * | 2018-12-29 | 2019-03-15 | 航天重型工程装备有限公司 | A kind of snatch vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009689A (en) * | 2010-11-03 | 2011-04-13 | 王政中 | Wheel steering device of multi-axle automobile |
| CN203211377U (en) * | 2013-05-10 | 2013-09-25 | 江西凯马百路佳客车有限公司 | Mechanism capable of achieving front axle rotation and rear axle locking |
| CN104709344A (en) * | 2014-11-28 | 2015-06-17 | 江门市兴江转向器有限公司 | Semi-integral type hydraulic power-assisted multi-axle steering system and control method thereof |
| CN208344334U (en) * | 2018-05-31 | 2019-01-08 | 南通环球转向器制造有限公司 | The all-hydraulic rear axle independent steering device of cylinder type |
-
2018
- 2018-05-31 CN CN201810544135.2A patent/CN108482485A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009689A (en) * | 2010-11-03 | 2011-04-13 | 王政中 | Wheel steering device of multi-axle automobile |
| CN203211377U (en) * | 2013-05-10 | 2013-09-25 | 江西凯马百路佳客车有限公司 | Mechanism capable of achieving front axle rotation and rear axle locking |
| CN104709344A (en) * | 2014-11-28 | 2015-06-17 | 江门市兴江转向器有限公司 | Semi-integral type hydraulic power-assisted multi-axle steering system and control method thereof |
| CN208344334U (en) * | 2018-05-31 | 2019-01-08 | 南通环球转向器制造有限公司 | The all-hydraulic rear axle independent steering device of cylinder type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467013A (en) * | 2018-12-29 | 2019-03-15 | 航天重型工程装备有限公司 | A kind of snatch vehicle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180904 |
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| RJ01 | Rejection of invention patent application after publication |