CN106741156B - A kind of list drag link hydraulic steering system and method - Google Patents
A kind of list drag link hydraulic steering system and method Download PDFInfo
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- CN106741156B CN106741156B CN201611068431.7A CN201611068431A CN106741156B CN 106741156 B CN106741156 B CN 106741156B CN 201611068431 A CN201611068431 A CN 201611068431A CN 106741156 B CN106741156 B CN 106741156B
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- hydraulic fluid
- fluid port
- transfer
- diverter
- connection
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/16—Arrangement of linkage connections
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses a kind of single drag link hydraulic steering system and methods, belong to multiaxis bogie technical field.The list drag link hydraulic steering system includes: that the first transfer is arranged on the car body；The rod chamber of second transfer is connected to by the first connection chamber with the rod chamber of the first transfer；The rod chamber of 4th transfer is connected to by the second connection chamber with the rod chamber of third transfer；Rotating-table apparatus is connect with the 4th transfer and the second transfer；Diverter is connect with steering wheel, diverter offers the first hydraulic fluid port, load-sensitive mouth and the second hydraulic fluid port, first hydraulic fluid port is connected to the rodless cavity of the second transfer and the 4th transfer, second hydraulic fluid port is connected to the rodless cavity of the first transfer and third transfer, and load-sensitive mouth is connected to steering pump.List drag link hydraulic steering system of the present invention and method realize that eight word of vehicle turns in the case where single drag link.
Description
Technical field
The present invention relates to multiaxis bogie technical field, in particular to a kind of single drag link hydraulic steering system and method.
Background technique
Hydraulic steering system is mostly used in large-scale heavy engineering equipment, oil liquid flow direction is controlled by diverter and is supplied to steering
The turning function of oil cylinder realization vehicle.To realize vehicle all-wheel steering, link mechanism (non-eight word turns to), double drag links are mostly used
Simply connected cavity fluid pressure linkage (steering of eight words), which is realized, to be turned to.But since part multi-axis machines can only arrange lower single drag link (such as U
Type vehicle frame), and need to turn to by eight words and reduce turning radius, above-mentioned technology can not realize eight words in the case where single drag link
It turns to.
Summary of the invention
The present invention provides a kind of single drag link hydraulic steering system and method, solves or part solves in the prior art
Hydraulic steering system cannot achieve the technical issues of eight word of multiple-axle vehicle turns in the case where arranging single drag link.
In order to solve the above technical problems, be arranged on the car body the present invention provides a kind of single drag link hydraulic steering system,
The steering system is connect with steering wheel, and the steering system is connect with steering pump；The steering system includes: the first steering dress
It sets, is arranged on the car body；Second transfer is arranged on the car body, second transfer and described first
Transfer is symmetrical with the car body longitudinal centre line, the rod chamber of second transfer by the first connection chamber with it is described
The rod chamber of first transfer is connected to；Third transfer is arranged on the car body；4th transfer is arranged in institute
It states on car body, the 4th transfer is symmetrical with the car body longitudinal centre line with the third transfer, and the described 4th
The rod chamber of transfer is connected to by the second connection chamber with the rod chamber of the third transfer；Rotating-table apparatus, activity are set
It sets on the car body, the rotating-table apparatus is connect with the 4th transfer and the second transfer；Diverter, with the direction
Disk connection, the diverter offer the first hydraulic fluid port, load-sensitive mouth and the second hydraulic fluid port, first hydraulic fluid port with described second turn
It is connected to the rodless cavity of device and the 4th transfer, second hydraulic fluid port and first transfer and third transfer
Rodless cavity connection, the load-sensitive mouth is connected to the steering pump.
Further, first transfer includes: steering cylinder, is arranged on the car body, the nothing of the steering cylinder
Rod cavity is connected to the second hydraulic fluid port of the diverter, and the rod chamber of the steering cylinder passes through the first connection chamber and described second
The rod chamber of transfer is connected to.
Further, the rotating-table apparatus includes: central turntable, is movably arranged on the car body；First drag link, one
End is connect with the central turntable, and the other end is connect with second transfer；Second drag link, one end and the center turn
Disk connection, the other end are connect with the third transfer.
Further, list drag link hydraulic steering system of the present invention further include: the first centralising device is arranged in the car body
On, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port and the 6th hydraulic fluid port, the third hydraulic fluid port are offered on first centralising device
It being connected to the second hydraulic fluid port of the diverter, the oil return opening opened up on the 4th hydraulic fluid port and the diverter is connected to, and described
Five hydraulic fluid ports are connected to the second connection chamber, and the high pressure oil port opened up on the 6th hydraulic fluid port and the diverter is connected to；Second
Centralising device is arranged on the car body, and the 7th hydraulic fluid port, the 9th hydraulic fluid port and the tenth oil are offered on second centralising device
Mouthful, the 7th hydraulic fluid port is connected to the second hydraulic fluid port of the diverter, and the 9th hydraulic fluid port is connected to the first connection chamber, institute
The high pressure oil port opened up on the tenth hydraulic fluid port and the diverter is stated to be connected to.
Further, first centralising device includes: solenoid directional control valve, and third oil is offered on the solenoid directional control valve
Mouth, the 5th hydraulic fluid port and the 6th hydraulic fluid port, the third hydraulic fluid port are connected to the second hydraulic fluid port of the diverter, the 5th hydraulic fluid port and institute
The connection of the second connection chamber is stated, the high pressure oil port opened up on the 6th hydraulic fluid port and the diverter is connected to, the solenoid directional control valve
Inside it is provided with electromagnet and ferromagnetic iron.
Further, list drag link hydraulic steering system of the present invention further include: the first bidirectional hydraulic lock, one end and described the
The connection of one centralising device, the other end are connected to the second connection chamber, first bidirectional hydraulic lock and the second connection chamber
Between be provided with the first two-way counterbalance valve, be provided with first between first bidirectional hydraulic lock and first two-way counterbalance valve
Safe valve group, the first safe valve group are connected to the oil return opening, the first safe valve group and first centralising device
On open up the 4th hydraulic fluid port connection；Second bidirectional hydraulic lock, one end are connected to second centralising device, the other end and described the
The connection of one connection chamber, is provided with the second two-way counterbalance valve between second bidirectional hydraulic lock and the first connection chamber, described
The second safe valve group, the second safe valve group and institute are provided between second bidirectional hydraulic lock and second two-way counterbalance valve
Oil return opening connection is stated, the 8th hydraulic fluid port opened up in the second safe valve group and second centralising device is connected to.
Based on identical inventive concept, the present invention also provides a kind of single drag link fluid-link steering method the following steps are included:
Pressure is passed to diverter by steering wheel rotation, steering wheel, and the load-sensitive mouth opened up on the diverter is connected to steering pump,
Give pressure signal transmission to the steering pump, the steering pump transmits corresponding pressure to the diverter according to pressure signal；Institute
The corresponding pressure for stating steering pump transmitting is defeated by the first hydraulic fluid port opened up on the diverter by the high pressure oil in the diverter
Rodless cavity or the second hydraulic fluid port by opening up on the diverter to the second transfer and the 4th transfer is sent to be delivered to
The rodless cavity of first transfer and third transfer；When Vehicular turn, the rod chamber of second transfer passes through
The rod chamber conveying high-pressure of first connection chamber to first transfer is oily, the oil in the rodless cavity of first transfer
Liquid returns to the rod chamber of the diverter, the 4th transfer by second by the second hydraulic fluid port on the diverter
The rod chamber conveying high-pressure of cavity to the third transfer is oily, and the oil liquid in the rodless cavity of the third transfer passes through
The second hydraulic fluid port on the diverter returns to the rod chamber of the diverter or first transfer by described first
The rod chamber conveying high-pressure of cavity to second transfer is oily, and the oil liquid in the rodless cavity of second transfer passes through
The first hydraulic fluid port on the diverter returns to the diverter, the rod chamber of the third transfer passes through second connection
The rod chamber conveying high-pressure of chamber to the 4th transfer is oily, and the oil liquid in the rodless cavity of the 4th transfer passes through institute
The first hydraulic fluid port stated on diverter returns to the diverter.
Further, first transfer includes: steering cylinder, is arranged on the car body, the nothing of the steering cylinder
Rod cavity is connected to the second hydraulic fluid port of the diverter, and the rod chamber of the steering cylinder passes through the first connection chamber and described second
The rod chamber of transfer is connected to；Swivel mount is connect with the steering cylinder.
Further, list drag link fluid-link steering method of the present invention further include: the first centralising device is arranged in the car body
On, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port and the 6th hydraulic fluid port, the third hydraulic fluid port are offered on first centralising device
It being connected to the second hydraulic fluid port of the diverter, the oil return opening opened up on the 4th hydraulic fluid port and the diverter is connected to, and described
Five hydraulic fluid ports are connected to the second connection chamber, and the high pressure oil port opened up on the 6th hydraulic fluid port and the diverter is connected to；Second
Centralising device is arranged on the car body, and the 7th hydraulic fluid port, the 9th hydraulic fluid port and the tenth oil are offered on second centralising device
Mouthful, the 7th hydraulic fluid port is connected to the second hydraulic fluid port of the diverter, and the 9th hydraulic fluid port is connected to the first connection chamber, institute
The high pressure oil port opened up on the tenth hydraulic fluid port and the diverter is stated to be connected to；First centralising device includes solenoid directional control valve, institute
It states and offers third hydraulic fluid port, the 5th hydraulic fluid port and the 6th hydraulic fluid port on solenoid directional control valve, the of the third hydraulic fluid port and the diverter
The connection of two hydraulic fluid ports, the 5th hydraulic fluid port are connected to the second connection chamber, open on the 6th hydraulic fluid port and the diverter
If high pressure oil port connection, be provided with electromagnet and ferromagnetic iron in the solenoid directional control valve.
Further, list drag link fluid-link steering method of the present invention further include: the first bidirectional hydraulic lock, one end and described the
The connection of one centralising device, the other end are connected to the second connection chamber, first bidirectional hydraulic lock and the second connection chamber
Between be provided with the first two-way counterbalance valve, be provided with first between first bidirectional hydraulic lock and first two-way counterbalance valve
Safe valve group, the first safe valve group are connected to the oil return opening, the first safe valve group and first centralising device
On open up the 4th hydraulic fluid port connection；Second bidirectional hydraulic lock, one end are connected to second centralising device, the other end and described the
The connection of one connection chamber, is provided with the second two-way counterbalance valve between second bidirectional hydraulic lock and the first connection chamber, described
The second safe valve group, the second safe valve group and institute are provided between second bidirectional hydraulic lock and second two-way counterbalance valve
Oil return opening connection is stated, the 8th hydraulic fluid port opened up in the second safe valve group and second centralising device is connected to.
By steering wheel rotation, steering wheel transmits pressure for list drag link hydraulic steering system provided by the invention and method
To diverter, the load-sensitive mouth opened up on diverter is connected to steering pump, by pressure signal transmission to steering pump, steering pump root
Corresponding pressure is transmitted to diverter according to pressure signal, the high pressure oil in diverter is passed through steering by the corresponding pressure of steering pump transmitting
The first hydraulic fluid port opened up on device is delivered to the rodless cavity of the second transfer and the 4th transfer or by opening up on diverter
The second hydraulic fluid port be delivered to the rodless cavity of the first transfer and third transfer, when Vehicular turn, the second transfer
Rod chamber by the first connection chamber to the rod chamber conveying high-pressure oil of the first transfer, in the rodless cavity of the first transfer
Oil liquid the rod chamber of diverter, the 4th transfer is returned to by the second connection chamber by the second hydraulic fluid port on diverter
To the rod chamber conveying high-pressure oil of third transfer, oil liquid in the rodless cavity of third transfer passes through the on diverter
Two hydraulic fluid ports return to diverter or the rod chamber of the first transfer is defeated by the rod chamber of the first connection chamber to the second transfer
High pressure oil is sent, the oil liquid in the rodless cavity of the second transfer returns to diverter by the first hydraulic fluid port on diverter, third turns
Pass through rod chamber conveying high-pressure oil of the second connection chamber to the 4th transfer, the 4th transfer to the rod chamber of device
Rodless cavity in oil liquid diverter is returned to by the first hydraulic fluid port on diverter, pass through independent first connection chamber and second
Cavity realizes that eight word of vehicle turns in the case where single drag link, and when the rotation of the second transfer, the center of rotating-table apparatus turns
Disk activity is arranged on the car body, and the second rotating device drives central turntable rotation by the first drag link, and central turntable passes through the
Two drag links drive the rotation of the 4th transfer, realize the second rotating device and the 4th rotating device using mechanical connection manner
Linkage.
Detailed description of the invention
Fig. 1 is the schematic diagram of single drag link hydraulic steering system provided in an embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of single drag link hydraulic steering system setting provided in an embodiment of the present invention on the car body, described turn
It is connect to system with steering wheel, the steering system is connect with steering pump；The steering system includes: the first transfer 1,
Two transfers 2, third transfer 3, the 4th transfer 4, rotating-table apparatus 5 and diverter 6.
First transfer 1 is arranged on the car body.
Second transfer 2 is arranged on the car body, second transfer 2 and first transfer
1 is symmetrical with the car body longitudinal centre line, and the rod chamber of second transfer 2 passes through the first connection chamber 7 and described first
The rod chamber of transfer 1 is connected to.
The third transfer 3 is arranged on the car body.
4th transfer 4 is arranged on the car body, the 4th transfer 4 and the third transfer
3 is symmetrical with the car body longitudinal centre line, and the 4th transfer 4 and first transfer 1 are lateral symmetry, and described
The rod chamber of four transfers 4 is connected to by the second connection chamber 8 with the rod chamber of the third transfer.
The rotating-table apparatus 5 is movably arranged on car body, the rotating-table apparatus and the 4th transfer 4 and second turn
It is connected to device 2.
The diverter 6 is connect with the steering wheel, and the diverter 6 offers the first hydraulic fluid port 6-1, load-sensitive mouth 6-
The 3 and second hydraulic fluid port 6-2, the first hydraulic fluid port 6-1 are connected to the rodless cavity of second transfer 2 and the 4th transfer 4,
The second hydraulic fluid port 6-2 is connected to the rodless cavity of first transfer 1 and third transfer 3, the load-sensitive mouth
6-3 is connected to the steering pump.
Pressure is passed to diverter, is opened up on diverter by technical solution of the present invention by steering wheel rotation, steering wheel
Load-sensitive mouth is connected to steering pump, and by pressure signal transmission to steering pump, steering pump is transmitted according to pressure signal to diverter
The corresponding pressure of corresponding pressure, steering pump transmitting conveys the high pressure oil in diverter by the first hydraulic fluid port opened up on diverter
Rodless cavity or the second hydraulic fluid port by opening up on diverter to the second transfer and the 4th transfer are delivered to first turn
To device and the rodless cavity of third transfer, when Vehicular turn, the rod chamber of the second transfer passes through the first connection chamber
To the rod chamber conveying high-pressure oil of the first transfer, oil liquid in the rodless cavity of the first transfer passes through the on diverter
Two hydraulic fluid ports return to diverter, the rod chamber of the 4th transfer passes through rod chamber of the second connection chamber to third transfer
Conveying high-pressure is oily, and the oil liquid in the rodless cavity of third transfer returns to diverter or first by the second hydraulic fluid port on diverter
The rod chamber of transfer is oily by the rod chamber conveying high-pressure of the first connection chamber to the second transfer, the second transfer
Oil liquid in rodless cavity returns to the rod chamber of diverter, third transfer by second by the first hydraulic fluid port on diverter
The rod chamber conveying high-pressure of cavity to the 4th transfer is oily, and the oil liquid in the rodless cavity of the 4th transfer passes through steering
The first hydraulic fluid port on device returns to diverter, through independent first connection chamber and the second connection chamber, in the case where single drag link
Realize that eight word of vehicle turns to, when the rotation of the second transfer, the central turntable of rotating-table apparatus is movably arranged on car body, and second
Rotating device drives central turntable rotation by the first drag link, and central turntable drives the 4th transfer by the second drag link
Rotation realizes the second rotating device and the 4th rotating device using mechanical connection manner and links.
The structure of the first transfer is discussed in detail.
First transfer includes: steering cylinder 1-1 and swivel mount 1-2.
The steering cylinder 1-1 is fixed on the car body.Specifically, in the present embodiment, the steering cylinder 1-1
It is bolted and is arranged on the car body, in other embodiments, the steering cylinder 1-1 is otherwise such as pivot pin
Etc. being fixed on the car body.The rodless cavity of the steering cylinder 1-1 is connected to the second hydraulic fluid port 6-2 of the diverter 6-1,
The rod chamber of the steering cylinder 1-1 is connected to by the first connection chamber 7 with the rod chamber of second transfer 2.
The swivel mount 1-2 is flexibly connected with the steering cylinder 1-1, specifically, in the present embodiment, the swivel mount
1-2 and the steering cylinder 1-1 are hinged.
The structure of rotating-table apparatus is discussed in detail.
The rotating-table apparatus includes: central turntable 5-1, the first drag link 5-2 and the second drag link 5-3.
The center turntable 5-1 is movably arranged on the car body, and the center turntable 5-1 can rotate on the car body.
Described one end first drag link 5-2 is connect with the center turntable 5-1.Specifically, in the present embodiment, described
First one end drag link 5-2 and the central turntable 5-1 are hinged.The first drag link 5-2 other end and described second turns to
Device 2 connects.Specifically, in the present embodiment, the first drag link 5-2 other end and second transfer 2 are cut with scissors
It connects.
Described one end second drag link 5-3 is connect with the center turntable 5-1.Specifically, in the present embodiment, described
Second one end drag link 5-3 and the central turntable 5-1 are hinged.The second drag link 5-3 other end and the described 4th turns to
Device 4 connects.Specifically, in the present embodiment, the second drag link 5-3 other end and the 4th transfer 4 are cut with scissors
It connects.
List drag link hydraulic steering system of the present invention further include: the first centralising device 9 and the second centralising device 10.
First centralising device 9 is fixed on the car body.Specifically, in the present embodiment, described first
Centralising device 9, which is bolted, to be arranged on the car body, and in other embodiments, first centralising device 9 can lead to
Other way is crossed as described in being fixed at pivot pin on car body.Offered on first centralising device 9 third hydraulic fluid port 9-1,
5th hydraulic fluid port 9-3 and the 6th hydraulic fluid port 9-4, the third hydraulic fluid port 9-1 are connected to the second hydraulic fluid port 6-2 of the diverter 6, and described
Five hydraulic fluid port 9-3 are connected to the second connection chamber 8, the high pressure oil port 6- opened up on the 6th hydraulic fluid port 9-4 and the diverter 6
4 connections.First centralising device includes: solenoid directional control valve.The solenoid directional control valve is arranged on the car body, the electromagnetism
Third hydraulic fluid port 9-1, the 5th hydraulic fluid port 9-3 and the 6th hydraulic fluid port 9-4, the third hydraulic fluid port 9-1 and the steering are offered on reversal valve
Second hydraulic fluid port 6-2 of device 6 is connected to, and the 5th hydraulic fluid port 9-3 is connected to the second connection chamber 8, the 6th hydraulic fluid port 9-4 and institute
The high pressure oil port 6-4 connection opened up on diverter 6 is stated, is provided with electromagnet and ferromagnetic iron in the solenoid directional control valve.
Second centralising device 10 is fixed on the car body.Specifically, in the present embodiment, described second
Centralising device 10, which is bolted, to be arranged on the car body, and in other embodiments, second centralising device 10 can
Otherwise as described in being fixed at pivot pin on car body.The 7th hydraulic fluid port is offered on second centralising device 10
Second hydraulic fluid port 6-2 of 10-1, the 9th hydraulic fluid port 10-3 and the tenth hydraulic fluid port 10-4, the 7th hydraulic fluid port 10-1 and the diverter 6 connects
Logical, the 9th hydraulic fluid port 10-3 is connected to the first connection chamber 7, is opened up on the tenth hydraulic fluid port 10-4 and the diverter
High pressure oil port 6-4 connection.
List drag link hydraulic steering system of the present invention further include: the first bidirectional hydraulic lock 11 and the second bidirectional hydraulic lock 12.
Described first bidirectional hydraulic lock, 11 one end is connected to first centralising device 9, the other end and second connection
Chamber 8 is connected to, and the first two-way counterbalance valve 14 is provided between first bidirectional hydraulic lock 11 and the second connection chamber 8, described
The first safe valve group 16, first safety valve are provided between first bidirectional hydraulic lock 11 and first two-way counterbalance valve 14
Group 16 is connected to the oil return opening 6-5, the 4th hydraulic fluid port opened up in the first safe valve group 16 and first centralising device 9
9-2 connection.
Described second bidirectional hydraulic lock, 12 one end is connected to second centralising device 10, the other end and first connection
Chamber 7 is connected to, and the second two-way counterbalance valve 13 is provided between second bidirectional hydraulic lock 12 and the first connection chamber 7, described
The second safe valve group 15, second safety valve are provided between second bidirectional hydraulic lock 12 and second two-way counterbalance valve 13
Group 15 is connected to the oil return opening 6-5, the 8th oil opened up in the second safe valve group 15 and second centralising device 10
Mouth 10-2 connection.
Based on identical inventive concept, the present invention also provides a kind of single drag link fluid-link steering method the following steps are included:
Step 1, pressure is passed to diverter 6 by steering wheel rotation, steering wheel, and the load opened up on the diverter 6 is quick
Sense mouth 6-3 is connected to steering pump, gives pressure signal transmission to the steering pump, the steering pump is according to pressure signal to described turn
Corresponding pressure is transmitted to device 6.
Step 2, the high pressure oil in the diverter 6 is passed through the diverter 6 by the corresponding pressure of the steering pump transmitting
On the first hydraulic fluid port 6-1 for opening up be delivered to the rodless cavity of the second transfer 2 and the 4th transfer 4 or by the diverter
The the second hydraulic fluid port 6-2 opened up on 6 is delivered to the rodless cavity of the first transfer 1 and third transfer 3.
Step 3, when Vehicular turn, the rod chamber of second transfer 2 passes through the first connection chamber 7 to described first
The rod chamber conveying high-pressure of transfer 1 is oily, and the oil liquid in the rodless cavity of first transfer 1 passes through the diverter 6
On the second hydraulic fluid port 6-2 return to the rod chamber of the diverter 6, the 4th transfer 4 by the second connection chamber 8 to described
The rod chamber conveying high-pressure of third transfer 3 is oily, and the oil liquid in the rodless cavity of the third transfer 3 passes through the steering
The second hydraulic fluid port 6-2 on device 6 returns to the diverter 6 or the rod chamber of first transfer 1 passes through first connection
The rod chamber conveying high-pressure of chamber 7 to second transfer 2 is oily, and the oil liquid in the rodless cavity of second transfer 2 is logical
The the first hydraulic fluid port 6-1 crossed on the diverter 6 returns to the rod chamber of the diverter 6, the third transfer 3 described in
The rod chamber conveying high-pressure of second connection chamber 8 to the 4th transfer 4 is oily, in the rodless cavity of the 4th transfer 4
Oil liquid the diverter 6 is returned to by the first hydraulic fluid port 6-1 on the diverter 6.
Step 4, when second transfer 2 rotates, the central turntable 5-1 of rotating-table apparatus 5 is movably arranged on car body
On, second rotating device 2 drives the center turntable 5-1 rotation, the center turntable 5-1 by the first drag link 5-2
The 4th transfer 4 rotation is driven by the second drag link 5-3.
The structure of the first transfer is discussed in detail.
First transfer includes: steering cylinder 1-1 and swivel mount 1-2.
The steering cylinder 1-1 is fixed on the car body.Specifically, in the present embodiment, the steering cylinder 1-1
It is bolted and is arranged on the car body, in other embodiments, the steering cylinder 1-1 is otherwise such as pivot pin
Etc. being fixed on the car body.The rodless cavity of the steering cylinder 1-1 is connected to the second hydraulic fluid port 6-2 of the diverter 6-1,
The rod chamber of the steering cylinder 1-1 is connected to by the first connection chamber 7 with the rod chamber of second transfer 2.
The swivel mount 1-2 is flexibly connected with the steering cylinder 1-1, specifically, in the present embodiment, the swivel mount
1-2 and the steering cylinder 1-1 are hinged.
List drag link fluid-link steering method of the present invention further include: the first centralising device 9 and the second centralising device 10.
First centralising device 9 is fixed on the car body.Specifically, in the present embodiment, described first
Centralising device 9, which is bolted, to be arranged on the car body, and in other embodiments, first centralising device 9 can lead to
Other way is crossed as described in being fixed at pivot pin on car body.Offered on first centralising device 9 third hydraulic fluid port 9-1,
5th hydraulic fluid port 9-3 and the 6th hydraulic fluid port 9-4, the third hydraulic fluid port 9-1 are connected to the second hydraulic fluid port 6-2 of the diverter 6, and described
Five hydraulic fluid port 9-3 are connected to the second connection chamber 8, the high pressure oil port 6- opened up on the 6th hydraulic fluid port 9-4 and the diverter 6
4 connections.First centralising device includes: solenoid directional control valve.The solenoid directional control valve is arranged on the car body, the electromagnetism
Third hydraulic fluid port 9-1, the 5th hydraulic fluid port 9-3 and the 6th hydraulic fluid port 9-4, the third hydraulic fluid port 9-1 and the steering are offered on reversal valve
Second hydraulic fluid port 6-2 of device 6 is connected to, and the 5th hydraulic fluid port 9-3 is connected to the second connection chamber 8, the 6th hydraulic fluid port 9-4 and institute
The high pressure oil port 6-4 connection opened up on diverter 6 is stated, is provided with electromagnet and ferromagnetic iron in the solenoid directional control valve.
Second centralising device 10 is fixed on the car body.Specifically, in the present embodiment, described second
Centralising device 10, which is bolted, to be arranged on the car body, and in other embodiments, second centralising device 10 can
Otherwise as described in being fixed at pivot pin on car body.The 7th hydraulic fluid port is offered on second centralising device 10
Second hydraulic fluid port 6-2 of 10-1, the 9th hydraulic fluid port 10-3 and the tenth hydraulic fluid port 10-4, the 7th hydraulic fluid port 10-1 and the diverter 6 connects
Logical, the 9th hydraulic fluid port 10-3 is connected to the first connection chamber 7, is opened up on the tenth hydraulic fluid port 10-4 and the diverter
High pressure oil port 6-4 connection.
List drag link fluid-link steering method of the present invention further include: the first bidirectional hydraulic lock 11 and the second bidirectional hydraulic lock 12.
Described first bidirectional hydraulic lock, 11 one end is connected to first centralising device 9, the other end and second connection
Chamber 8 is connected to, and the first two-way counterbalance valve 14 is provided between first bidirectional hydraulic lock 11 and the second connection chamber 8, described
The first safe valve group 16, first safety valve are provided between first bidirectional hydraulic lock 11 and first two-way counterbalance valve 14
Group 16 is connected to the oil return opening 6-5, the 4th hydraulic fluid port opened up in the first safe valve group 16 and first centralising device 9
9-2 connection.
Described second bidirectional hydraulic lock, 12 one end is connected to second centralising device 10, the other end and first connection
Chamber 7 is connected to, and the second two-way counterbalance valve 13 is provided between second bidirectional hydraulic lock 12 and the first connection chamber 7, described
The second safe valve group 15, second safety valve are provided between second bidirectional hydraulic lock 12 and second two-way counterbalance valve 13
Group 15 is connected to the oil return opening 6-5, the 8th oil opened up in the second safe valve group 15 and second centralising device 10
Mouth 10-2 connection.
The embodiment of the present invention is introduced in order to clearer, is introduced from the application method of the embodiment of the present invention below.
The steering cylinder 1-1 of first transfer 1, the steering cylinder of the second transfer 2, third transfer 3 steering cylinder
And the 4th the steering cylinder of transfer 4 be symmetrically installed on front left, front right, rear left, the rear right bit of car body, the first transfer
1 swivel mount 1-2 is connect with left rear wheel, and the swivel mount of the second transfer 2 is connect with the near front wheel, the rotation of third transfer 3
Pivoted frame is connect with off hind wheel, and the swivel mount of the 4th transfer 4 is connect with off-front wheel.Central turntable 5-1 is that a center is fixed
And rotatable structural member, one end of central turntable 5-1 pass through the swivel mount of the first drag link 5-2 and the second transfer 2
Connection, the other end are connect with the swivel mount of the 4th transfer 4 by the second drag link 5-3, are made by the way of mechanical connection
The steering cylinder of second transfer 2 and the steering cylinder of the 4th transfer 4 are realized and are linked.Diverter 6 is a kind of load for closing core
Sensitive hydraulic steering gear is mechanically connected with steering wheel, can convert hydraulic output flow for the rotational angle of steering wheel, turns
Intercommunication overflow valve ensure that the active cavity pressure safety of steering cylinder on device 6.
When turn left steering wheel when, pressure is passed to diverter 6, the load-sensitive opened up on diverter 6 by steering wheel
Mouth 6-3 is connected to steering pump, and by pressure signal transmission to steering pump, steering pump is transmitted to diverter 6 according to pressure signal and corresponded to
Pressure.High pressure oil in diverter 6 by the second hydraulic fluid port 6-2 of diverter 6 enter the first transfer 1 turn oil cylinder 1-1 with
In the rodless cavity of the steering cylinder of third transfer 3.The rod chamber oil liquid for turning oil cylinder 1-1 of first transfer 1 passes through first
Connection chamber 8 is delivered in the rod chamber of the steering cylinder of the second transfer 2, and rear left wheel is consistent with front left wheel steering angle.
The rod chamber oil liquid of the steering cylinder of third transfer 3 has by the oil cylinder that turns that the second connection chamber 8 is delivered to the 4th transfer 4
In rod cavity, right rear wheel is consistent with right front wheel steering angle.The steering cylinder 22 and the 4th transfer 4 of second transfer 2
The rodless cavity oil liquid of steering cylinder diverter 6 is returned to by the first hydraulic fluid port 6-1 of hydraulic steering gear 6, eight words turn to vehicle to the left.
When turn right steering wheel when, pressure is passed to diverter 6, the load-sensitive opened up on diverter 6 by steering wheel
Mouth 6-3 is connected to steering pump, and by pressure signal transmission to steering pump, steering pump is transmitted to diverter 6 according to pressure signal and corresponded to
Pressure.High pressure oil in diverter 6 enters the steering cylinder and the 4th of the second transfer 2 by the first hydraulic fluid port 6-1 of diverter 6
In the rodless cavity of 4 steering cylinder of transfer.The rod chamber oil liquid of the steering cylinder of second transfer 2 is defeated by the first connection chamber 7
It send to the rod chamber for turning oil cylinder 1-1 of the first transfer 1, rear left wheel is consistent with front left wheel steering angle.4th turn
The rod chamber of the steering cylinder of third transfer 3 is delivered to by the second connection chamber 8 to the rod chamber oil liquid of 4 steering cylinder of device
Interior, right rear wheel is consistent with right front wheel steering angle.Turn for turning oil cylinder 1-1 and third transfer 3 of first transfer 1
Diverter 6 is returned to by the second hydraulic fluid port 6-2 of hydraulic steering gear 6 to the rodless cavity oil liquid of cylinder, eight words turn to vehicle to the right.
First centralising device 9 solenoid directional control valve setting offer on the car body, on solenoid directional control valve third hydraulic fluid port 9-1,
5th hydraulic fluid port 9-3 and the 6th hydraulic fluid port 9-4, third hydraulic fluid port 9-1 are connected to the second hydraulic fluid port 6-2 of diverter 6, the 5th hydraulic fluid port 9-3 with
The high pressure oil port 6-4 opened up on the connection of second connection chamber 8, the 6th hydraulic fluid port 9-4 and diverter 6 is connected to.The electricity of first centralising device 9
Electromagnet and ferromagnetic iron are provided in magnetic reversal valve.The solenoid directional control valve fixed setting of second centralising device 10 is on the car body.The
Offer the 7th hydraulic fluid port 10-1, the 9th hydraulic fluid port 10-3 and the tenth hydraulic fluid port 10-4 on the solenoid directional control valve of two centralising devices 10, the 7th
Hydraulic fluid port 10-1 is connected to the second hydraulic fluid port 6-2 of diverter 6, and the 9th hydraulic fluid port 10-3 is connected to the first connection chamber 7, the tenth hydraulic fluid port 10-4
It is connected to the high pressure oil port 6-4 opened up on diverter.Electromagnet and iron are provided in the solenoid directional control valve of second centralising device 10
Magnet.When the electromagnet of the first centralising device 9 obtains electric, the swivel mount of third transfer 3 is rotated clockwise, when the first centering
The swivel mount of third transfer 3 rotates counterclockwise when the ferromagnetic iron of device 9 obtains electric.When the electromagnet of the second centralising device 10 obtains
The swivel mount of first transfer 1 rotates clockwise when electric, and when the ferromagnetic iron of the second centralising device 10 obtains electric, first turns to dress
1 rotation counterclockwise is set, when the work of the solenoid directional control valve of the first centralising device 9 and the second centralising device 10, rear left wheel turns left
Or it turns right to positive front left wheel angle.It is adjusted respectively by the solenoid directional control valve of the first centralising device 9 and the second centralising device 10
Left back, right rear wheel angle is saved, front and back wheel is realized and turns to centering.
First bidirectional hydraulic lock, 11 one end is connected to the first centralising device 9, and the other end is connected to the second connection chamber 8, and first
The first two-way counterbalance valve 14,12 one end of the second bidirectional hydraulic lock are provided between bidirectional hydraulic lock 11 and the second connection chamber 8
Be connected to the second centralising device 10, the other end is connected to the first connection chamber 7, the second bidirectional hydraulic lock 12 and the first connection chamber 7 it
Between be provided with the second two-way counterbalance valve 13, prevent oil cylinder be forced under external force elongation when generate vacuum and liquid is sucked by fuel tank
Pressure oil is destroyed to the first connection chamber 7 and the second connection chamber 8 and turns to linkage.
The first safe valve group 16, the first safety valve are provided between first bidirectional hydraulic lock 11 and the first two-way counterbalance valve 14
Group 16 is connected to the oil return opening 6-5, and the 4th hydraulic fluid port 9-2 opened up in the first safe valve group 16 and the first centralising device 9 is connected to,
Be provided with the second safe valve group 15 between second bidirectional hydraulic lock 12 and the second two-way counterbalance valve 13, the second safe valve group 15 with return
Hydraulic fluid port 6-5 is connected to, and the 8th hydraulic fluid port 10-2 opened up in the second safe valve group 15 and the second centralising device 10 is connected to, when the first connection
Chamber 7 and 8 pressure of the second connection chamber carry out off-load when being higher than steering cylinder bearing capacity, guarantee the first connection chamber 7 and the second connection chamber 8
Pressure security.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (10)
1. a kind of list drag link hydraulic steering system, on the car body, the steering system is connect with steering wheel, the steering for setting
System is connect with steering pump；It is characterized in that, the steering system includes:
First transfer (1) is arranged on the car body；
Second transfer (2) is arranged on the car body, second transfer (2) and first transfer (1)
Symmetrical with the car body longitudinal centre line, the rod chamber of second transfer (2) passes through the first connection chamber (7) and described the
The rod chamber of one transfer (1) is connected to；
Third transfer (3) is arranged on the car body；
4th transfer (4) is arranged on the car body, the 4th transfer (4) and the third transfer (3)
Symmetrical with the car body longitudinal centre line, the rod chamber of the 4th transfer (4) passes through the second connection chamber (8) and described the
The rod chamber of three transfers is connected to；
Rotating-table apparatus (5), is movably arranged on car body, and the rotating-table apparatus is turned to the 4th transfer (4) and second
Device (2) connection；
Diverter (6), connect with the steering wheel, and the diverter (6) offers the first hydraulic fluid port (6-1), load-sensitive mouth (6-
3) and the second hydraulic fluid port (6-2), the nothing of first hydraulic fluid port (6-1) and second transfer (2) and the 4th transfer (4)
Rod cavity connection, second hydraulic fluid port (6-2) are connected to the rodless cavity of first transfer (1) and third transfer (3),
The load-sensitive mouth (6-3) is connected to the steering pump.
2. steering system according to claim 1, which is characterized in that first transfer includes:
Steering cylinder (1-1) is arranged on the car body, and the of the rodless cavity of the steering cylinder (1-1) and the diverter (6-1)
Two hydraulic fluid ports (6-2) connection, the rod chamber of the steering cylinder (1-1) is turned to by the first connection chamber (7) and described second to be filled
Set the rod chamber connection of (2)；
Swivel mount (1-2) is connect with the steering cylinder (1-1).
3. steering system according to claim 1, which is characterized in that the rotating-table apparatus includes:
Central turntable (5-1), is movably arranged on the car body；
First drag link (5-2), one end are connect with the central turntable (5-1), and the other end and second transfer (2) are even
It connects；
Second drag link (5-3), one end are connect with the central turntable (5-1), and the other end and the 4th transfer (4) are even
It connects.
4. steering system according to claim 1, which is characterized in that the steering system further include:
First centralising device (9) is arranged on the car body, offers third hydraulic fluid port (9- on first centralising device (9)
1), the 5th hydraulic fluid port (9-3) and the 6th hydraulic fluid port (9-4), the second hydraulic fluid port (6- of the third hydraulic fluid port (9-1) and the diverter (6)
2) it is connected to, the 5th hydraulic fluid port (9-3) is connected to the second connection chamber (8), the 6th hydraulic fluid port (9-4) and the diverter
(6) high pressure oil port (6-4) connection opened up on；
Second centralising device (10) is arranged on the car body, offers the 7th hydraulic fluid port on second centralising device (10)
(10-1), the 9th hydraulic fluid port (10-3) and the tenth hydraulic fluid port (10-4), the second of the 7th hydraulic fluid port (10-1) and the diverter (6)
Hydraulic fluid port (6-2) connection, the 9th hydraulic fluid port (10-3) is connected to the first connection chamber (7), the tenth hydraulic fluid port (10-4) and
High pressure oil port (6-4) connection opened up on the diverter.
5. steering system according to claim 4, which is characterized in that first centralising device includes:
Solenoid directional control valve is arranged on the car body, third hydraulic fluid port (9-1), the 5th hydraulic fluid port is offered on the solenoid directional control valve
(9-3) and the 6th hydraulic fluid port (9-4), the third hydraulic fluid port (9-1) is connected to the second hydraulic fluid port (6-2) of the diverter (6), described
5th hydraulic fluid port (9-3) is connected to the second connection chamber (8), is opened up on the 6th hydraulic fluid port (9-4) and the diverter (6)
High pressure oil port (6-4) is connected to, and is provided with electromagnet and ferromagnetic iron in the solenoid directional control valve.
6. steering system according to claim 4, which is characterized in that the steering system further include:
First bidirectional hydraulic lock (11), one end are connected to first centralising device (9), the other end and the second connection chamber
(8) it is connected to, is provided with the first two-way counterbalance valve between first bidirectional hydraulic lock (11) and the second connection chamber (8)
(14), the first safe valve group is provided between first bidirectional hydraulic lock (11) and first two-way counterbalance valve (14)
(16), the described first safe valve group (16) is connected to oil return opening (6-5), the first safe valve group (16) and first centering
The 4th hydraulic fluid port (9-2) connection opened up on device (9)；
Second bidirectional hydraulic lock (12), one end are connected to second centralising device (10), the other end and the first connection chamber
(7) it is connected to, is provided with the second two-way counterbalance valve between second bidirectional hydraulic lock (12) and the first connection chamber (7)
(13), the second safe valve group is provided between second bidirectional hydraulic lock (12) and second two-way counterbalance valve (13)
(15), the described second safe valve group (15) is connected to the oil return opening (6-5), the second safe valve group (15) and described second
The 8th hydraulic fluid port (10-2) connection opened up on centralising device (10).
7. a kind of list drag link fluid-link steering method, based on single drag link fluid-link steering as claimed in any one of claims 1 to 6
System, which comprises the following steps:
Steering wheel rotation, steering wheel pass to pressure diverter (6), the load-sensitive mouth (6- opened up on the diverter (6)
3) it is connected to steering pump, gives pressure signal transmission to the steering pump, the steering pump is according to pressure signal to the diverter
(6) corresponding pressure is transmitted；
The corresponding pressure of the steering pump transmitting is by the high pressure oil in the diverter (6) by opening up on the diverter (6)
The first hydraulic fluid port (6-1) be delivered to the rodless cavity of the second transfer (2) and the 4th transfer (4) or by the diverter
(6) the second hydraulic fluid port (6-2) opened up on is delivered to the rodless cavity of the first transfer (1) and third transfer (3)；
When Vehicular turn, the rod chamber of second transfer (2) turns to dress by first connection chamber (7) Xiang Suoshu first
The rod chamber conveying high-pressure oil of (1) is set, the oil liquid in the rodless cavity of first transfer (1) passes through the diverter (6)
On the second hydraulic fluid port (6-2) return to the diverter (6), the 4th transfer (4) rod chamber by the second connection chamber
(8) the rod chamber conveying high-pressure of Xiang Suoshu third transfer (3) is oily, the oil in the rodless cavity of the third transfer (3)
Liquid returns to the diverter (6) or first transfer (1) by the second hydraulic fluid port (6-2) on the diverter (6)
Rod chamber is oily by the rod chamber conveying high-pressure of the first connection chamber (7) second transfer of Xiang Suoshu (2), and described second turn
Oil liquid into the rodless cavity of device (2) by the first hydraulic fluid port (6-1) on the diverter (6) return to the diverter (6),
The rod chamber that the rod chamber of the third transfer (3) passes through the 4th transfer (4) of the second connection chamber (8) Xiang Suoshu
Conveying high-pressure is oily, and the oil liquid in the rodless cavity of the 4th transfer (4) passes through the first hydraulic fluid port on the diverter (6)
(6-1) returns to the diverter (6)；
When second transfer (2) rotation, the central turntable (5-1) of rotating-table apparatus (5) is movably arranged on car body, institute
It states the second rotating device (2) and drives the central turntable (5-1) to rotate by the first drag link (5-2), the center turntable (5-
1) the 4th transfer (4) rotation is driven by the second drag link (5-3).
8. forward method according to claim 7, which is characterized in that first transfer includes:
Steering cylinder (1-1) is arranged on the car body, and the of the rodless cavity of the steering cylinder (1-1) and the diverter (6-1)
Two hydraulic fluid ports (6-2) connection, the rod chamber of the steering cylinder (1-1) is turned to by the first connection chamber (7) and described second to be filled
Set the rod chamber connection of (2)；
Swivel mount (1-2) is connect with the steering cylinder (1-1).
9. forward method according to claim 7, which is characterized in that the forward method further include:
First centralising device (9) is arranged on the car body, offers third hydraulic fluid port (9- on first centralising device (9)
1), the 4th hydraulic fluid port (9-2), the 5th hydraulic fluid port (9-3) and the 6th hydraulic fluid port (9-4), the third hydraulic fluid port (9-1) and the diverter
(6) the second hydraulic fluid port (6-2) is connected to, and the oil return opening (6-5) opened up on the 4th hydraulic fluid port (9-2) and the diverter (6) is even
Logical, the 5th hydraulic fluid port (9-3) is connected to the second connection chamber (8), the 6th hydraulic fluid port (9-4) and the diverter (6)
On open up high pressure oil port (6-4) connection；
Second centralising device (10) is arranged on the car body, offers the 7th hydraulic fluid port on second centralising device (10)
(10-1), the 8th hydraulic fluid port (10-2), the 9th hydraulic fluid port (10-3) and the tenth hydraulic fluid port (10-4), the 7th hydraulic fluid port (10-1) with it is described
The second hydraulic fluid port (6-2) of diverter (6) is connected to, the oil return opening (6- opened up on the 8th hydraulic fluid port (10-2) and the diverter
5) it is connected to, the 9th hydraulic fluid port (10-3) is connected to the first connection chamber (7), the tenth hydraulic fluid port (10-4) and the steering
High pressure oil port (6-4) connection opened up on device；
First centralising device includes solenoid directional control valve, is arranged on the car body, and the is offered on the solenoid directional control valve
Three hydraulic fluid ports (9-1), the 4th hydraulic fluid port (9-2), the 5th hydraulic fluid port (9-3) and the 6th hydraulic fluid port (9-4), the third hydraulic fluid port (9-1) and institute
State the second hydraulic fluid port (6-2) connection of diverter (6), the oil return opening opened up on the 4th hydraulic fluid port (9-2) and the diverter (6)
(6-5) connection, the 5th hydraulic fluid port (9-3) is connected to the second connection chamber (8), the 6th hydraulic fluid port (9-4) and described turn
The high pressure oil port (6-4) opened up on device (6) is connected to, and is provided with electromagnet and ferromagnetic iron in the solenoid directional control valve.
10. forward method according to claim 9, which is characterized in that the forward method further include:
First bidirectional hydraulic lock (11), one end are connected to first centralising device (9), the other end and the second connection chamber
(8) it is connected to, is provided with the first two-way counterbalance valve between first bidirectional hydraulic lock (11) and the second connection chamber (8)
(14), the first safe valve group is provided between first bidirectional hydraulic lock (11) and first two-way counterbalance valve (14)
(16), the described first safe valve group (16) is connected to the oil return opening (6-5), the first safe valve group (16) and described first
The 4th hydraulic fluid port (9-2) connection opened up on centralising device (9)；
Second bidirectional hydraulic lock (12), one end are connected to second centralising device (10), the other end and the first connection chamber
(7) it is connected to, is provided with the second two-way counterbalance valve between second bidirectional hydraulic lock (12) and the first connection chamber (7)
(13), the second safe valve group is provided between second bidirectional hydraulic lock (12) and second two-way counterbalance valve (13)
(15), the described second safe valve group (15) is connected to the oil return opening (6-5), the second safe valve group (15) and described second
The 8th hydraulic fluid port (10-2) connection opened up on centralising device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068431.7A CN106741156B (en) | 2016-11-25 | 2016-11-25 | A kind of list drag link hydraulic steering system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068431.7A CN106741156B (en) | 2016-11-25 | 2016-11-25 | A kind of list drag link hydraulic steering system and method |
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| Publication Number | Publication Date |
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| CN106741156A CN106741156A (en) | 2017-05-31 |
| CN106741156B true CN106741156B (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611068431.7A Active CN106741156B (en) | 2016-11-25 | 2016-11-25 | A kind of list drag link hydraulic steering system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110435760B (en) * | 2019-08-09 | 2024-06-21 | 湖南五新隧道智能装备股份有限公司 | Steering hydraulic system with deviation correcting function and deviation correcting method |
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| CN102673640A (en) * | 2012-06-14 | 2012-09-19 | 中国航天三江集团公司 | Hydraulic steering system |
| CN202923705U (en) * | 2012-11-27 | 2013-05-08 | 徐州重型机械有限公司 | Follow-up steering control system of multi-axle truck crane and multi-axle truck crane |
| CN105235745A (en) * | 2015-10-28 | 2016-01-13 | 武汉神骏专用汽车制造股份有限公司 | Semitrailer steering device with steerable wheels |
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2016
- 2016-11-25 CN CN201611068431.7A patent/CN106741156B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3911885A1 (en) * | 1989-04-07 | 1990-10-11 | Mannesmann Ag | Steering control for multi-axle vehicle - has position sensing potentiometers on steering linkages and processor control |
| CN1325819A (en) * | 1998-11-30 | 2001-12-12 | 三星重工业株式会社 | Traveller with trolley |
| CN202345762U (en) * | 2011-12-07 | 2012-07-25 | 魏秋东 | Power gooseneck for multi-axis hydraulic combination type transport vehicle |
| CN102673640A (en) * | 2012-06-14 | 2012-09-19 | 中国航天三江集团公司 | Hydraulic steering system |
| CN202923705U (en) * | 2012-11-27 | 2013-05-08 | 徐州重型机械有限公司 | Follow-up steering control system of multi-axle truck crane and multi-axle truck crane |
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