CN104210541A - Vehicle emergency steering system and wheeled crane - Google Patents
Vehicle emergency steering system and wheeled crane Download PDFInfo
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- CN104210541A CN104210541A CN201410423911.5A CN201410423911A CN104210541A CN 104210541 A CN104210541 A CN 104210541A CN 201410423911 A CN201410423911 A CN 201410423911A CN 104210541 A CN104210541 A CN 104210541A
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- steering
- swivel system
- emergency vehicle
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- steering swivel
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Abstract
The invention discloses a vehicle emergency steering system and a wheeled crane. The vehicle emergency steering system comprises a hydraulic power steering device, the hydraulic power steering device comprises a power steering cylinder and a power steering pump used for providing power pressure oil for the power steering cylinder; the vehicle emergency steering system also comprises a pneumatic motor, a gasholder, a switching valve and an inflation pump, wherein the power output end of the pneumatic motor is in transmission connection with the power input end of the power steering pump; the gas outlet of the gasholder is connected with the gas inlet of the pneumatic motor; the switching valve is arranged on a gas course between the gas outlet of the gasholder and the gas inlet of the pneumatic motor; the gas outlet of the inflation pump is connected with the gas inlet of the gasholder, and the power input end of the inflation pump is in transmission connection with the power output end of a vehicle engine. By implementing the vehicle emergency steering system and the wheeled crane disclosed by the invention, emergency power steering can be realized when the failure of the vehicle engine occurs, and thus, greater difficulty which occurs when a driver performs steering operation can be effectively avoided, and therefore corresponding accidents can be effectively avoided, and the safety is enhanced.
Description
Technical field
The present invention relates to Vehicular turn technical field, particularly one is met an urgent need steering swivel system.
Background technology
At present, in engineering truck, such as, in car hosit, its steering swivel system generally adopts power steering gear, and this power steering gear is generally on the basis of manual steering system, add a set of power steering apparatus formed.The modal form of this power steering apparatus is hydraulic pressure assisted steering device, specifically, and the steering actuation cylinder that this hydraulic pressure assisted steering device comprises power assistance pump for steering and is connected with vehicle bridge steering hardware.
At nominal conditions, the energy realized needed for Vehicular turn only has sub-fraction to be provided by manual steering system by chaufeur, and major part is provided by hydraulic pressure assisted steering device by driving engine, namely, in steering procedure, driven by engine power assistance pump for steering operates, and then provides pressure oil to steering actuation cylinder, make steering actuation cylinder action, thus auxiliary realize turning to of tire.
But, if when the normal motoring condition of vehicle meets with accident, car load dynamic failure, driving engine is shut down or flame-out, and now, hydraulic pressure assisted steering device will run out of steam source, will bring larger difficulty, very easily cause accident to occur to Driver Steering Attention; Consider engineering truck usually need to trudge and general work under the harsies environment such as field, this risk will be amplified further.
Therefore, how improving for the above-mentioned deficiency of prior art, is those skilled in the art's technical matterss urgently to be resolved hurrily.
Summary of the invention
In view of this, an object of the present invention is to provide a kind of emergency vehicle steering swivel system, is difficult to realize the problem of power steering to solve in prior art when vehicle power lost efficacy, thus effectively avoids occurring corresponding accident.
Specifically, this emergency vehicle steering swivel system comprises hydraulic pressure assisted steering device, described hydraulic pressure assisted steering device comprises steering actuation cylinder and for providing the power assistance pump for steering of boost pressure oil for described steering actuation cylinder, described emergency vehicle steering swivel system also comprises: air motor, and the power intake of its clutch end and described power assistance pump for steering is in transmission connection; Storage tank, its air extractor duct is connected to the admission port of described air motor; Switch valve, is arranged in the gas circuit between the air extractor duct of described storage tank and the admission port of described air motor; Inflation pump, its air extractor duct is connected to the admission port of described storage tank, and the clutch end of its power intake and vehicle motor is in transmission connection.
Further, described hydraulic pressure assisted steering device also comprises fuel tank and change-over valve; The oil suction of described power assistance pump for steering is connected to fuel tank, oil outlet is connected to the oil inlet of described change-over valve, the return opening of described change-over valve is connected to described fuel tank, two actuator ports of described change-over valve are connected to two acting chambers of described steering actuation cylinder respectively, and the mode of operation of described change-over valve is corresponding with steering manipulation state.
Further, described change-over valve is rotary valve.
Further, described storage tank is provided with safety valve.
Further, described switch valve is electromagnetic valve.
Further; described emergency vehicle steering swivel system also comprises controller; first mouth of described controller is connected to the electromagnetic control end of described switch valve, described controller to be used for when described vehicle motor is shut down and at Vehicular turn time control described switch valve and be in connected state.
Further, arrangement of clutch is provided with between the power intake of described inflation pump and the clutch end of described vehicle motor.
Further, described arrangement of clutch is electric-controlled engaging and disengaging gear, the pressure-detecting device that described emergency vehicle steering swivel system also comprises controller and is connected with its signal, described pressure-detecting device is arranged on described storage tank, second mouth of described controller is connected to the automatically controlled end of described electric-controlled engaging and disengaging gear, and described controller is used for controlling described arrangement of clutch when described vehicle motor normally works and when the pressure of described storage tank does not reach predetermined value and is in engagement state.
When adopting emergency vehicle of the present invention to turn to this system, in vehicle travel process, in normal conditions, power is provided to inflation pump by vehicle motor, inflation pump is inflated to storage tank, and then make the gaseous tension in storage tank reach predetermined value, when meeting with emergency case and causing vehicle motor shut down or stop working, switch valve can be made to be in connected state, thus make storage tank discharge output high-pressure gas driving air motor, the power that air motor produces drives power assistance pump for steering, thus realize emergent power steering, chaufeur can be effectively avoided to occur larger difficulty when steering operation like this, thus can effectively avoid occurring corresponding accident, effectively reduce potential safety hazard.
Another object of the present invention is to provide a kind of wheel crane, effectively to improve safety performance when transition, transport.
Specifically, this wheel crane is provided with the emergency vehicle steering swivel system described in above-mentioned any one.
Further, described wheel crane is car hosit.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The principle composition schematic diagram of a kind of emergency vehicle steering swivel system that Fig. 1 provides for the embodiment of the present invention, for the ease of understanding and illustrating, also show the schematic block diagram of vehicle motor in figure.
Number in the figure illustrates:
1 hydraulic pressure assisted steering device
2 emergent steering power generators
3 driving engines
4 controllers
11 steering actuation cylinders
12 change-over valves
13 power assistance pump for steerings
14 fuel tanks
21 inflation pump
22 storage tanks
23 air motors
24 switch valves
25 safety valves
26 pressure-detecting devices
Detailed description of the invention
To it should be pointed out that in this part to the description of concrete structure and description order it is only explanation to specific embodiment, should not be considered as there is any restriction to protection scope of the present invention.In addition, when not conflicting, the embodiment in this part and the feature in embodiment can combine mutually.
Please refer to Fig. 1, below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.
As shown in Figure 1, the emergency vehicle steering swivel system of the present embodiment can comprise hydraulic pressure assisted steering device 1, air motor 23, switch valve 24, storage tank 22 and inflation pump 21.
Wherein, hydraulic pressure assisted steering device 1 preferably includes steering actuation cylinder 11, change-over valve 12, power assistance pump for steering 13 and fuel tank 14, the oil suction of power assistance pump for steering 13 is connected to fuel tank 14, oil outlet is connected to the oil inlet of change-over valve 12, the return opening of change-over valve 12 is connected to fuel tank 14, two actuator ports of change-over valve 12 are connected to two acting chambers of steering actuation cylinder 11 respectively, change-over valve 12 can realize staggered commutation, namely under the first mode of operation, the oil inlet of change-over valve 12 communicates with the first actuator port, return opening communicates with the second actuator port, under the second mode of operation, oil inlet communicates with the second actuator port, return opening communicates with the first actuator port, the mode of operation of change-over valve can with the steering state of chaufeur (i.e. steering manipulation state, manipulation state corresponding to bearing circle) corresponding, thus the power steering state of servo cylinder and steering state are adapted.
The clutch end of air motor 23 and the power intake of power assistance pump for steering 13 are in transmission connection; The air extractor duct of storage tank 22 is connected to the admission port of air motor 23, and the air extractor duct of air motor 23 can be communicated in air; Switch valve 24 is arranged in the gas circuit between the air extractor duct of storage tank 22 and the admission port of air motor 23; The air extractor duct of inflation pump 21 is connected to the admission port of storage tank, and the power intake of inflation pump 21 and the clutch end of vehicle motor 3 are in transmission connection.
The principle of work of the emergent steering swivel system of above-described embodiment is described: in vehicle travel process below in conjunction with concrete scene, in normal conditions, vehicle motor 3 normally works, switch valve 24 is in off-state, inflation pump 21 can make storage tank 22 be full of the gas (as air) of scheduled pressure value under the effect of vehicle motor 3, when chaufeur carries out steering operation, power assistance pump for steering 13 (power intake of power assistance pump for steering 13 is also in transmission connection with the clutch end of vehicle motor 3) can operate with pressure oil output under the effect of vehicle motor 3, pressure oil arrives steering actuation cylinder 11 after change-over valve 12, thus the power steering under realizing nominal situation, in the process of moving, when meeting with emergency case and causing vehicle power inefficacy (vehicle motor 3 is shut down or stopped working), vehicle motor 3 can not provide power for power assistance pump for steering 13, under such conditions, switch valve 24 can be made to be in connected state, high pressure gas in such storage tank 22 will be acted on to air motor 23 by switch valve 24 and operating to make it, and then the power that air motor is produced drives power assistance pump for steering, thus realize emergent power steering, it can thus be appreciated that, compared with prior art, the emergency vehicle steering swivel system of above-described embodiment can realize the emergent power steering of vehicle, appearance larger difficulty when can effectively avoid chaufeur to carry out steering operation after vehicle power lost efficacy, thus can effectively avoid occurring corresponding accident, effectively reduce potential safety hazard.
In specific implementation process, the emergency vehicle steering swivel system of above-described embodiment can also do following at least one optimization:
One, the change-over valve 12 of hydraulic pressure assisted steering device 1 can adopt rotary valve, is convenient to like this realize in steering procedure, and the mode of operation of change-over valve 12 and the steering state (the course changing control state corresponding to chaufeur) of manual steering system adapt.
Two, storage tank 22 is provided with safety valve 25, the gaseous tension in storage tank 22 can be made like this to reach set pressure, and storage tank 22 can be made can not to damage because air pressure inside is excessive.
Three, the power intake of power assistance pump for steering 13 can engage (such as by corresponding arrangement of clutch) be in transmission connection with the clutch end of vehicle motor 3, the clutch end of air motor 23 can be in transmission connection with the clutch end of power assistance pump for steering 13 with engaging, be convenient to like this realize when vehicle motor 3 lost efficacy, the power intake of power assistance pump for steering 13 being thrown off with the clutch end of vehicle motor 3 and the power intake of the clutch end of air motor 23 with power assistance pump for steering 13 being engaged, also the power intake being convenient to realize in normal conditions just power assistance pump for steering 13 engages with the clutch end of vehicle motor 3 and is thrown off by the power intake of the clutch end of air motor 23 and power assistance pump for steering 13.
Four, arrangement of clutch can be provided with between the power intake and the clutch end of vehicle motor 3 of inflation pump 21, such as electric-controlled engaging and disengaging gear, be convenient to like this realize providing power by vehicle motor 3 to inflation pump 21 in normal conditions, to realize the inflation of storage tank 22.
Five, in order to realize the emergent power steering under unusual service condition fast, switch valve 24 can adopt electromagnetic valve, on this basis, emergency vehicle steering swivel system can also comprise controller 4, this controller 4 can have at least one mouth, its first mouth is connected to the electromagnetic control end of switch valve, this controller 4 can also have at least one input end, such as, its certain input end (can pass through sensing device) and obtain the steering state of vehicle, another input end can obtain the current state of vehicle motor 3, so in the process of moving, when controller 4 know vehicle motor 3 shut down and Vehicular turn time, controller 4 can obtain electric (for switch valve 24 for normally closed solenoid valve) by master cock valve 24, switch valve 24 is made to be in connected state, thus realize emergent power steering.Further, if adopt the scheme of aforementioned " four " simultaneously, emergency vehicle steering swivel system can also comprise pressure-detecting device 26, the function of controller 4 also can respective extension, particularly, this pressure-detecting device 26 is arranged on storage tank 22, for detecting the air pressure inside of storage tank 22, one of pressure-detecting device 26 and controller 4 inputs single signal and is connected, second mouth of controller 4 is connected to the automatically controlled end of electric-controlled engaging and disengaging gear, controller 4 is also for when vehicle motor normally works and when the air pressure inside of storage tank 22 does not reach predetermined value, control described electric-controlled engaging and disengaging gear and be in engagement state, inflate to storage tank 22 to make inflation pump 21.Further, if also adopt the scheme of aforementioned " three " simultaneously, the all right respective extension of function of controller 4, such as, other mouths of controller 4 can be connected to the automatically controlled end of between power assistance pump for steering 13 and vehicle motor 3 and between power assistance pump for steering 13 and air motor 23 arrangement of clutch (for electric-controlled engaging and disengaging gear), controller 4 is also for controlling the engagement state of each arrangement of clutch according to the state of vehicle motor 3 and/or current steering state, the full automaticity of power steering state switches under achieving nominal situation like this and under unusual service condition.In addition, it should be noted that, in specific implementation process, controller 4 can adopt PLC (Programmable Logic Controller, programmable logic controller (PLC)) or relay, solenoid valve circuit, sensor incircuit etc. to build.
Six, for the ease of installing, arrange and safeguarding, can be arranged at integrated to inflation pump 21, storage tank 22 and air motor 23 in emergent steering power generator 2.
It should be noted that, the emergent steering boost system of above-described embodiment is illustrated to comprise the hydraulic pressure assisted steering device 1 shown in Fig. 1, but in other embodiments, the concrete form of hydraulic pressure assisted steering device 1 is not limited to the situation shown in Fig. 1, also can adopt other forms.
Other embodiments of the invention additionally provide a kind of wheel crane, as car hosit, this wheel crane is provided with the emergency vehicle steering swivel system described in above-described embodiment, because above-mentioned emergency vehicle steering swivel system has above-mentioned technique effect, therefore, the specific implementation process of its appropriate section of safety performance when this wheel crane effectively improves transition, transport is similar to the above embodiments, and the specific implementation process of other parts see the associated description of prior art, hereby can not repeat.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an emergency vehicle steering swivel system, comprise hydraulic pressure assisted steering device (1), described hydraulic pressure assisted steering device (1) comprises steering actuation cylinder (11) and for providing the power assistance pump for steering (13) of boost pressure oil for described steering actuation cylinder (11), it is characterized in that, described emergency vehicle steering swivel system also comprises:
Air motor (23), the power intake of its clutch end and described power assistance pump for steering (13) is in transmission connection;
Storage tank (22), its air extractor duct is connected to the admission port of described air motor (23);
Switch valve (24), is arranged in the gas circuit between the air extractor duct of described storage tank (22) and the admission port of described air motor (23);
Inflation pump (21), its air extractor duct is connected to the admission port of described storage tank (22), and the clutch end of its power intake and vehicle motor (3) is in transmission connection.
2. emergency vehicle steering swivel system as claimed in claim 1, it is characterized in that, described hydraulic pressure assisted steering device (1) also comprises fuel tank (14) and change-over valve (12); The oil suction of described power assistance pump for steering (13) is connected to fuel tank, oil outlet is connected to the oil inlet of described change-over valve (12), the return opening of described change-over valve (12) is connected to described fuel tank (14), two actuator ports of described change-over valve (12) are connected to two acting chambers of described steering actuation cylinder (11) respectively, and the mode of operation of described change-over valve is corresponding with steering manipulation state.
3. emergency vehicle steering swivel system as claimed in claim 2, it is characterized in that, described change-over valve (12) is rotary valve.
4. emergency vehicle steering swivel system as claimed in claim 1, is characterized in that, described storage tank (22) is provided with safety valve (25).
5. the emergency vehicle steering swivel system as described in any one of Claims 1-4, is characterized in that, described switch valve (24) is electromagnetic valve.
6. emergency vehicle steering swivel system as claimed in claim 5; it is characterized in that; described emergency vehicle steering swivel system also comprises controller (4); first mouth of described controller (4) is connected to the electromagnetic control end of described switch valve (24), and described controller (4) is in connected state for controlling described switch valve (24) during when described vehicle motor (3) is shut down and at Vehicular turn.
7. the emergency vehicle steering swivel system as described in any one of Claims 1-4, is characterized in that, is provided with arrangement of clutch between the power intake of described inflation pump (21) and the clutch end of described vehicle motor (3).
8. emergency vehicle steering swivel system as claimed in claim 7, it is characterized in that, described arrangement of clutch is electric-controlled engaging and disengaging gear, the pressure-detecting device (26) that described emergency vehicle steering swivel system also comprises controller (4) and is connected with its signal, described pressure-detecting device (26) is arranged on described storage tank (22), second mouth of described controller (4) is connected to the automatically controlled end of described electric-controlled engaging and disengaging gear, described controller (4) for described vehicle motor (3) normally work time and control described arrangement of clutch when the pressure of described storage tank (22) does not reach predetermined value and be in engagement state.
9. a wheel crane, is characterized in that, described wheel crane is provided with the emergency vehicle steering swivel system described in any one of claim 1 to 8.
10. wheel crane as claimed in claim 9, it is characterized in that, described wheel crane is car hosit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423911.5A CN104210541B (en) | 2014-08-26 | 2014-08-26 | Emergency vehicle steering and wheeled crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423911.5A CN104210541B (en) | 2014-08-26 | 2014-08-26 | Emergency vehicle steering and wheeled crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104210541A true CN104210541A (en) | 2014-12-17 |
| CN104210541B CN104210541B (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410423911.5A Active CN104210541B (en) | 2014-08-26 | 2014-08-26 | Emergency vehicle steering and wheeled crane |
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| CN (1) | CN104210541B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741154A (en) * | 2016-11-15 | 2017-05-31 | 中联重科股份有限公司 | The steering control system and autocrane of crane |
| CN107829998A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | A kind of new gas-liquid power conversion method |
| CN108657266A (en) * | 2017-03-31 | 2018-10-16 | 宝沃汽车（中国）有限公司 | Vehicular turn force aid system and method and electro-motive vehicle |
| CN108657272A (en) * | 2017-03-31 | 2018-10-16 | 宝沃汽车（中国）有限公司 | Electro-motive vehicle steering boost system and method and electro-motive vehicle |
| CN114590314A (en) * | 2022-03-22 | 2022-06-07 | 三一汽车起重机械有限公司 | Emergency steering system, chassis and operation machine |
| CN115246437A (en) * | 2022-07-11 | 2022-10-28 | 湖南行必达网联科技有限公司 | Steering hydraulic control system and method and vehicle |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741154A (en) * | 2016-11-15 | 2017-05-31 | 中联重科股份有限公司 | The steering control system and autocrane of crane |
| CN108657266A (en) * | 2017-03-31 | 2018-10-16 | 宝沃汽车（中国）有限公司 | Vehicular turn force aid system and method and electro-motive vehicle |
| CN108657272A (en) * | 2017-03-31 | 2018-10-16 | 宝沃汽车（中国）有限公司 | Electro-motive vehicle steering boost system and method and electro-motive vehicle |
| CN107829998A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | A kind of new gas-liquid power conversion method |
| CN114590314A (en) * | 2022-03-22 | 2022-06-07 | 三一汽车起重机械有限公司 | Emergency steering system, chassis and operation machine |
| WO2023178797A1 (en) * | 2022-03-22 | 2023-09-28 | 三一汽车起重机械有限公司 | Emergency steering system, chassis and operation machine |
| CN115246437A (en) * | 2022-07-11 | 2022-10-28 | 湖南行必达网联科技有限公司 | Steering hydraulic control system and method and vehicle |
| CN115246437B (en) * | 2022-07-11 | 2024-03-08 | 湖南行必达网联科技有限公司 | Steering hydraulic control system and method and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104210541B (en) | 2016-11-23 |
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