CN204956615U - Vehicle and power -assisted steering system thereof - Google Patents
Vehicle and power -assisted steering system thereof Download PDFInfo
- Publication number
- CN204956615U CN204956615U CN201520588401.3U CN201520588401U CN204956615U CN 204956615 U CN204956615 U CN 204956615U CN 201520588401 U CN201520588401 U CN 201520588401U CN 204956615 U CN204956615 U CN 204956615U
- Authority
- CN
- China
- Prior art keywords
- hydraulic pump
- power
- vehicle
- steering
- communicated
- 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.)
- Active
Links
Abstract
The utility model discloses a vehicle and power -assisted steering system thereof, include first helping hand return circuit and second helping hand return circuit and turn to the machine, the first hydraulic pump by the engine driven of vehicle has on the first helping hand return circuit, with the first oil tank of first hydraulic pump intercommunication and the first servo -cylinder that is used for driving the steering mechanism of vehicle, the gearbox driven second hydraulic pump by the vehicle has on the second helping hand return circuit, with the second oil tank of second hydraulic pump intercommunication and the second servo -cylinder that is used for driving steering mechanism, wherein first servo -cylinder communicates with first hydraulic pump and first oil tank respectively through turning to the machine, the second servo -cylinder communicates with second hydraulic pump and second oil tank respectively through turning to the machine. Like this, behind the reason stop work of first helping hand return circuit owing to engine failure, still can normally work in second helping hand return circuit, play the effect that the vehicle emergency turned to. And at normal during operation, two helping hand return circuits are power assisted steering mechanism simultaneously for the helping hand is effectual, and the utilization of resources is abundant.
Description
Technical field
The utility model relates to the power steering field of vehicle, particularly, relates to the vehicle of a kind of steering boost system and this system of use.
Background technology
Current heavy wrecker truck, especially the heavy-duty vehicle that turns to of twin shaft, after power steering lost efficacy, Vehicular turn cannot be realized by bearing circle, when vehicle runs into engine breakdown or steering swivel system fault, the direction of vehicle is uncontrollable, and its personal security and property safety cannot ensure, also likely endanger the driving safety of other vehicles, consequence is very serious.For this reason, there is a kind of emergent steering boost system in prior art, when driving engine breaks down, turning to of vehicle can be realized by emergent steering boost system.Be such as disclose a kind of emergency double loop steering boost system in the Chinese patent of CN102700603B at notification number.But the function singleness of existing emergent steering swivel system, only just works when needs are emergent, serious waste of resources.
Utility model content
An object of the present utility model is to provide a kind of steering boost system of vehicle, Vehicular turn when this steering boost system can realize emergent and simultaneously make full use of resource, and power-assisted is effective.
Another object of the present utility model is to provide a kind of vehicle, the steering boost system that this vehicle uses the utility model to provide.
To achieve these goals, according to an aspect of the present utility model, a kind of steering boost system of vehicle is provided, this steering boost system comprises the first power-assisted loop and the second power-assisted loop and steering box, described first power-assisted loop has by engine-driven first Hydraulic Pump of vehicle, the first fuel tank be communicated with the first Hydraulic Pump and for driving the first servo cylinder of the steering hardware of vehicle, described second power-assisted loop has the second Hydraulic Pump driven by the change speed gear box of vehicle, the second fuel tank be communicated with described second Hydraulic Pump and for driving the second servo cylinder of described steering hardware, wherein said first servo cylinder is communicated with described first fuel tank with described first Hydraulic Pump respectively by described steering box, described second servo cylinder is communicated with described second fuel tank with described second Hydraulic Pump respectively by described steering box.
Preferably, be connected with connection oil circuit between described first power-assisted loop and described second power-assisted loop, this connection oil circuit is connected with the pressure-gradient control valve with response pressure.
Preferably, described pressure-gradient control valve is allow fluid from described first power-assisted loop stream to the by pass valve in described second power-assisted loop.
Preferably, described connection oil circuit is connected between the oil-feed port of described first Hydraulic Pump and the oil-feed port of described second Hydraulic Pump.
Preferably, described first power-assisted loop is provided with first flow detecting device, and this first flow detecting device is electrically connected with controller, and this controller is electrically connected with the first alarm device of the operator's compartment being positioned at described vehicle.
Preferably, the oil return line in described second power-assisted loop is provided with second amount detecting device, and this second amount detecting device is electrically connected with controller, and this controller is electrically connected with the Secondary Report alarm device of the operator's compartment being positioned at described vehicle.
Preferably, described first Hydraulic Pump is blade-type pump, and described second Hydraulic Pump is plunger pump.
Preferably, the oil port of described first servo cylinder is provided with dash pot valve.
Preferably, described steering box has the first oil inlet, first return opening, first actuator port and the second actuator port, second oil inlet, second return opening, 3rd actuator port and the 4th actuator port, wherein said first oil inlet is communicated with the oil-feed port of described first Hydraulic Pump, described first return opening is communicated with described first fuel tank, described first actuator port and the second actuator port are communicated with rodless cavity with the rod chamber of described first servo cylinder respectively, described second oil inlet is communicated with the oil-feed port of described second Hydraulic Pump, described second return opening is communicated with described second fuel tank, described 3rd actuator port is communicated with rodless cavity with the rod chamber of described second servo cylinder respectively with the 4th actuator port.
According to another aspect of the present utility model, provide a kind of vehicle, this vehicle comprises the steering boost system that the utility model provides.
Pass through technique scheme, because the first power-assisted loop and the second power-assisted loop can be respectively used to the steering hardware driving vehicle, in the first power-assisted loop due to after the reason of engine breakdown quits work, second power-assisted loop still can normally work, thus drive steering hardware to turn to, enable handling maneuver forward on target trajectory at specific time, play the effect that emergency vehicle turns to.And when normally working, two power-assisted loops can assisted power steering system simultaneously, and make power-assisted effective, the utilization of resources is abundant.That is, make emergency loop participate in daily steering swivel system work, assume responsibility for part steering-load, shared system risk, improve reliability and the durability of system.
Other feature and advantage of the present utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification sheets, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is steering boost system that the utility model preferred implementation provides structural representation when normally working;
Fig. 2 is the structural representation of steering boost system when emergency that the utility model preferred implementation provides;
Fig. 3 is the structural representation of steering boost system when low speed or pivot stud that the utility model preferred implementation provides.
Description of reference numerals
1 first power-assisted loop, power-assisted loop 2 second
3 steering boxs 4 are communicated with oil circuit
7 dashs pot valve
11 first Hydraulic Pump 12 first servo cylinders
13 first fuel tank 21 second Hydraulic Pumps
22 second servo cylinder 23 second fuel tanks
41 pressure-gradient control valve 51 first flow detecting devices
61 first warning device 52 second amount detecting devices
62 Secondary Report alarm devices
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1 to Figure 3, the utility model provides a kind of steering boost system of vehicle and uses the vehicle of this steering boost system.Wherein in order to realize the purpose of this utility model, the steering boost system that the utility model provides comprises the first power-assisted loop 1 and the second power-assisted loop 2 and steering box 3, first power-assisted loop 1 have by engine-driven first Hydraulic Pump 11 of vehicle, the first fuel tank 13 be communicated with the first Hydraulic Pump 11 and for driving the first servo cylinder 12 of the steering hardware of vehicle, second power-assisted loop 2 has the second Hydraulic Pump 21 driven by the change speed gear box of vehicle, the second fuel tank 23 be communicated with the second Hydraulic Pump 21 and for driving the second servo cylinder 22 of steering hardware, wherein the first servo cylinder 12 is communicated with the first fuel tank 13 with the first Hydraulic Pump 11 respectively by steering box 3, second servo cylinder 22 is communicated with the second fuel tank 13 with the second Hydraulic Pump 21 respectively by steering box 3.Wherein steering box 3 by the rotation of bearing circle mobile inner spool, thus by the corresponding hydraulic fluid port of conducting by corresponding servo cylinder driving steering hardware, the drag link of such as steering hardware, thus realize turning to of vehicle.
Therefore, in the technical scheme that the utility model is above-mentioned, because the first power-assisted loop 1 and the second power-assisted loop 2 can respectively by servo cylinder for driving the steering hardware of vehicle, therefore, as shown in Figure 2, in the first power-assisted loop 1 due to after the reason of engine breakdown quits work, second power-assisted loop 2 still can normally work, thus drive steering hardware to turn to by the second servo cylinder 22, enable handling maneuver forward on target trajectory at specific time, play the effect that emergency vehicle turns to.Further, as shown in Figure 1, when normally working, two power-assisted loops can drive steering hardware by respective servo cylinder simultaneously, and make power-assisted effective, the utilization of resources is abundant.That is, make emergency loop participate in daily steering swivel system work, assume responsibility for part steering-load, shared system risk, improve reliability and the durability of system.
In preferred implementation of the present utility model, as shown in Figure 3, steering box 3 has the first oil inlet P 1, first oil return inlet T 1, first actuator port A1 and the second actuator port B1, second oil inlet P 2, second oil return inlet T 2, 3rd actuator port A2 and the 4th actuator port B2, wherein the first oil inlet P 1 is communicated with the oil-feed port of the first Hydraulic Pump 11, first oil return inlet T 1 is communicated with the first fuel tank 13, first actuator port A1 is communicated with rodless cavity with the rod chamber of the first servo cylinder 1 respectively with the second actuator port B1, and the second oil inlet P 2 is communicated with the oil-feed port of the second Hydraulic Pump 21, second oil return inlet T 2 is communicated with the second fuel tank 23, 3rd actuator port A2 is communicated with rodless cavity with the rod chamber of the second servo cylinder 2 respectively with the 4th actuator port B2.
Like this, under normal working such as shown in Fig. 1, the movement of the inner spool of steering box 3 is driven by bearing circle, can conducting first oil inlet P 1 and the first actuator port A1, conducting second oil inlet P 2 and the 3rd actuator port A2, conducting first oil return inlet T 1 and the second actuator port B1, and conducting second oil return inlet T 2 and the 4th actuator port B2.Like this, the pressure oil confessed from the first Hydraulic Pump 11 can enter in the rod chamber of the first servo cylinder 12 by the first oil inlet P 1, first actuator port A1, along with the retraction of piston rod, fluid enters in the second actuator port B1 by rodless cavity, is then flowed back in the first fuel tank 13 by the first oil return inlet T 1.
Equally, the pressure oil confessed from the second Hydraulic Pump 21 can enter in the rodless cavity of the second servo cylinder 22 by the second oil inlet P 2, the 3rd actuator port A2, along with stretching out of piston rod, fluid enters in the 4th actuator port B2 by rod chamber, is then flowed back in the second fuel tank 23 by the second oil return inlet T 2.Thus by two servo cylinders one push away one draw make a concerted effort, efficiently complete turning to of steering hardware.
And as shown in Figure 2, when the driving engine of vehicle such as to break down at the problem, the first power-assisted loop 1 first Hydraulic Pump 11 quits work owing to running out of steam, and makes the first servo cylinder 12 to drive and turns to.Mechanism, and now second Hydraulic Pump 21 in the second power-assisted loop 2 still can be worked on by the change speed gear box power taking in the vehicle in traveling, when now can complete emergent separately by the second servo cylinder 22, the driving of steering hardware, for the principle of work in the second power-assisted loop 2, repeats no more.
Further, in preferred implementation of the present utility model, two power-assisted loops that the utility model provides can also effectively the low speed of lifting vehicle or pivot stud time turn to efficiency.Particularly, be connected with between the first power-assisted loop 1 and the second power-assisted loop 2 and be communicated with oil circuit 4, this connection oil circuit 4 is connected with the pressure-gradient control valve 41 with response pressure.Wherein, when vehicle carries out low speed and pivot stud, turn to suffered resistance larger, and now by the second Hydraulic Pump 21 of change speed gear box power taking or the power that obtains very little, and make the work efficiency in the second power-assisted loop 2 itself lower, at this moment, to increase sharply from the pressure in the first power-assisted loop 1 of engine torque extraction, after the response pressure of force value overpressure control cock 41, pressure oil in first power-assisted loop 1 will enter in the second power-assisted loop 2, thus drive the second servo cylinder 22 and the first servo cylinder 12 to drive steering hardware simultaneously simultaneously, now the two collaborative work can the significantly efficiency that turns to of lifting vehicle.
Wherein, as a kind of preferred embodiment, pressure-gradient control valve 41 is the by pass valve allowing fluid to flow to the second power-assisted loop 2 from the first power-assisted loop 1.In the embodiment that other are possible, pressure-gradient control valve 41 can also be other valve members opened by oil pressure actuated, such as sequence valve, check valve of band spring etc.In addition, in order to ensure that the pressure oil entered in the second power-assisted loop 2 completes the driving to the second servo cylinder 22 smoothly, being communicated with oil circuit 4 is connected between the oil-feed port of the first Hydraulic Pump 11 and the oil-feed port of the second Hydraulic Pump 21, to perform the fuel feeding effect of the second Hydraulic Pump 21.
As shown in Figure 1 to Figure 3, know Vehicular turn in time to make chaufeur and occur emergency rating, preferably, first power-assisted loop 1 is provided with first flow detecting device 51, this first flow detecting device 5 is electrically connected with controller, and this controller is electrically connected with the first alarm device 61 of the operator's compartment being positioned at vehicle.Like this, the first Hydraulic Pump 11 can be known by the fluid amount detected in the first power-assisted loop 1 and whether provide enough fluid, such as, and when flow value is lower than threshold value in controller, then control the first warning device 61 by controller, alarm lamp completes alert operation.In the embodiment that other are possible, the first warning device can also be the device that buzzer phone etc. can point out chaufeur.Wherein first flow detecting device 51 can be flow counter, and it can be arranged on the oil return line in the first power-assisted loop 1, such as, between steering box 3 and the first fuel tank 13.In the mode that other are possible, also can be arranged on the in-line of the first power-assisted oil return 1.
In addition, the oil return line in the second power-assisted loop 2 is provided with second amount detecting device 52, this second amount detecting device 52 is electrically connected with controller, and this controller is electrically connected with the Secondary Report alarm device 62 of the operator's compartment being positioned at described vehicle.Wherein this controller can be integrated in the ECU of vehicle with above-mentioned controller, also can be independent controller.The effect arranging second amount detecting device 52 and Secondary Report alarm device 62 is, when vehicle carries out pivot stud, when cornering resistance is excessive, when first and second power-assisted loop co-operation still cannot complete handling maneuver, two servo cylinders are without turnover fluid, now, the fluid in the second power-assisted loop 2 is refluxed by steering box 3, and flow through second amount detecting device 52 and get back in the second fuel tank 23, the fluid flowing through second amount detecting device 52 due to system pressure increase can increase, when exceeding the upper limit threshold in controller, Secondary Report alarm device 62 can be reported to the police, even if thus promote in time driver two overlap power steering loop make a concerted effort also unable complete instantly turn to task, meet situation beyond designed capacity, namely, prompting driver abandons behaviour and does, to protect the safety of existing system.
In preferred implementation of the present utility model, in order to adapt to the driving engine power taking mode different with change speed gear box two kinds, preferably, first Hydraulic Pump 11 can be the blade-type pump of unidirectional rotation, and the second Hydraulic Pump 21 for adapting to the plunger pump of Double-directional rotary, thus more effectively can obtain power and provides pressure oil.In the embodiment that other are possible, first, second Hydraulic Pump can also be other Hydraulic Pumps well known in the art.
In addition; when the first servo cylinder 12 and the second servo cylinder 22 work simultaneously; especially when two servo cylinders are total member; the pressure of the first servo cylinder 12 is set up very fast; difference of pressure is had instantaneously with the second servo cylinder 22; building pressure speed to slow down the first servo cylinder 12, reducing and impacting in the cylinder of the second servo cylinder 22, protection system and parts.Preferably, the oil port of the first servo cylinder 12 is provided with dash pot valve 7.This dash pot valve 7 can play the effect of pressure buffer, and when high pressure oil needs to enter the first servo cylinder 12, oil pressure needs first to overcome the valve inner spring of dash pot valve 7 and opens valve port gradually, like this, can in the first servo cylinder 12 slow build-up pressure.That is, and when from servo cylinder oil return, there is pressure reduction the front and back due to dash pot valve 7 wherein, this dash pot valve 7 is the valve that two-way circulates, and, the other passage of valve can be opened under the effect of the pressure completely, and fluid is refluxed smoothly.
Wherein, the dash pot valve 7 realizing above-mentioned functions can to reflux two-way valve member or valve group for having arbitrarily fluid buffer action in this area and realizing fluid.As a kind of preferred embodiment, the dash pot valve 7 that the utility model adopts can be the valve group be made up of the check valve of band spring, flow regulating valve and by pass valve, fluid various flows in realize buffering to fluid by different valves, thus two-way circulating of fluid can be realized while buffering fluid.
To sum up, the steering boost system that the utility model provides is the double loop steering swivel system including emergent steering swivel system, and like this when normal vehicle operation, two loops work simultaneously, for steering swivel system provides power, jointly complete handling maneuver.When vehicle motor fault, emergent turning to can be realized by the second power-assisted loop.And when vehicle is comparatively slow at the poor vehicle body of road conditions, or during pivot stud, two loops can by being communicated with oil circuit 4 UNICOM, and now two servo cylinders work simultaneously, can increase by the power-assisted effect of at least 30%.Therefore, the steering boost system that the utility model provides has higher practicality and promotional value.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. the steering boost system of a vehicle, it is characterized in that, this steering boost system comprises the first power-assisted loop (1) and the second power-assisted loop (2) and steering box (3), described first power-assisted loop (1) has by engine-driven first Hydraulic Pump (11) of vehicle, the first fuel tank (13) be communicated with the first Hydraulic Pump (11) and for driving first servo cylinder (12) of the steering hardware of vehicle, described second power-assisted loop (2) has the second Hydraulic Pump (21) driven by the change speed gear box of vehicle, the second fuel tank (23) be communicated with described second Hydraulic Pump (21) and for driving second servo cylinder (22) of described steering hardware, wherein said first servo cylinder (12) is communicated with described first fuel tank (13) with described first Hydraulic Pump (11) respectively by described steering box (3), described second servo cylinder (22) is communicated with described second fuel tank (13) with described second Hydraulic Pump (21) respectively by described steering box (3).
2. steering boost system according to claim 1, it is characterized in that, be connected with between described first power-assisted loop (1) and described second power-assisted loop (2) and be communicated with oil circuit (4), this connection oil circuit (4) is connected with the pressure-gradient control valve (41) with response pressure.
3. steering boost system according to claim 2, is characterized in that, described pressure-gradient control valve (41) is the by pass valve allowing fluid to flow to described second power-assisted loop (2) from described first power-assisted loop (1).
4. the steering boost system according to Claims 2 or 3, is characterized in that, between the oil-feed port that described connection oil circuit (4) is connected to described first Hydraulic Pump (11) and the oil-feed port of described second Hydraulic Pump (21).
5. steering boost system according to claim 1, it is characterized in that, described first power-assisted loop (1) is provided with first flow detecting device (51), this first flow detecting device (51) is electrically connected with controller, and this controller is electrically connected with first alarm device (61) of the operator's compartment being positioned at described vehicle.
6. steering boost system according to claim 1 and 2, it is characterized in that, the oil return line in described second power-assisted loop (2) is provided with second amount detecting device (52), this second amount detecting device (52) is electrically connected with controller, and this controller is electrically connected with the Secondary Report alarm device (62) of the operator's compartment being positioned at described vehicle.
7. steering boost system according to claim 1, is characterized in that, described first Hydraulic Pump (11) is blade-type pump, and described second Hydraulic Pump (21) is plunger pump.
8. steering boost system according to claim 1 and 2, is characterized in that, the oil port of described first servo cylinder (12) is provided with dash pot valve (7).
9. steering boost system according to claim 1, it is characterized in that, described steering box (3) has the first oil inlet (P1), the first return opening (T1), the first actuator port (A1) and the second actuator port (B1), second oil inlet (P2), the second return opening (T2), the 3rd actuator port (A2) and the 4th actuator port (B2), wherein
Described first oil inlet (P1) is communicated with the oil-feed port of described first Hydraulic Pump (11), described first return opening (T1) is communicated with described first fuel tank (13), described first actuator port (A1) and the second actuator port (B1) are communicated with rodless cavity with the rod chamber of described first servo cylinder (1) respectively
Described second oil inlet (P2) is communicated with the oil-feed port of described second Hydraulic Pump (21), described second return opening (T2) is communicated with described second fuel tank (23), and described 3rd actuator port (A2) is communicated with rodless cavity with the rod chamber of described second servo cylinder (2) respectively with the 4th actuator port (B2).
10. a vehicle, is characterized in that, this vehicle comprises according to the steering boost system in claim 1-9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520588401.3U CN204956615U (en) | 2015-08-06 | 2015-08-06 | Vehicle and power -assisted steering system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520588401.3U CN204956615U (en) | 2015-08-06 | 2015-08-06 | Vehicle and power -assisted steering system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204956615U true CN204956615U (en) | 2016-01-13 |
Family
ID=55051697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520588401.3U Active CN204956615U (en) | 2015-08-06 | 2015-08-06 | Vehicle and power -assisted steering system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204956615U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828595A (en) * | 2017-02-10 | 2017-06-13 | 宁夏百辰工业产品设计有限公司 | Steering machine idling operation hydraulic pressure adjustment flow screening component |
| CN108995707A (en) * | 2018-08-29 | 2018-12-14 | 中国重汽集团柳州运力科迪亚克机械有限责任公司 | Snow sweeper emergency hydraulic steering |
| CN110914138A (en) * | 2017-05-16 | 2020-03-24 | Zf主动安全与电子美国有限责任公司 | Power steering apparatus |
| CN113895515A (en) * | 2021-10-27 | 2022-01-07 | 浙江吉利控股集团有限公司 | Power-assisted steering system and vehicle |
| CN114248839A (en) * | 2022-01-26 | 2022-03-29 | 湖南三一中型起重机械有限公司 | Vehicle emergency steering hydraulic system and working vehicle |
-
2015
- 2015-08-06 CN CN201520588401.3U patent/CN204956615U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828595A (en) * | 2017-02-10 | 2017-06-13 | 宁夏百辰工业产品设计有限公司 | Steering machine idling operation hydraulic pressure adjustment flow screening component |
| CN110914138A (en) * | 2017-05-16 | 2020-03-24 | Zf主动安全与电子美国有限责任公司 | Power steering apparatus |
| CN108995707A (en) * | 2018-08-29 | 2018-12-14 | 中国重汽集团柳州运力科迪亚克机械有限责任公司 | Snow sweeper emergency hydraulic steering |
| CN113895515A (en) * | 2021-10-27 | 2022-01-07 | 浙江吉利控股集团有限公司 | Power-assisted steering system and vehicle |
| CN114248839A (en) * | 2022-01-26 | 2022-03-29 | 湖南三一中型起重机械有限公司 | Vehicle emergency steering hydraulic system and working vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204956615U (en) | Vehicle and power -assisted steering system thereof | |
| CN102120447B (en) | Forklift hydraulic system matched with multi-functional wet brakes | |
| CN102351005B (en) | Multi-mode steering hydraulic control system and wheeled crane using same | |
| CN205890975U (en) | Two return circuits of emergent formula turn to device | |
| CN200988512Y (en) | Two-way driving anti-explosion diesel engine transport vehicle for coal mine | |
| CN102602385B (en) | Parking braking system and engineering machinery | |
| CN203427875U (en) | Steering system of heavy commercial automobile | |
| CN103790875B (en) | A kind of Hydraulic Power Transmission System allowing energy regenerating | |
| CN106051145A (en) | Vehicle door opening walking forbidding system | |
| CN205478612U (en) | Engineering machine tool hydraulic braking system | |
| CN102259816B (en) | Operation safety control system for internal combustion forklift truck | |
| CN107472014A (en) | Automobile accelerator mistake-stepping prevention device | |
| CN203611976U (en) | Hydraulic travel emergency brake system for engineering machinery | |
| CN105216861B (en) | Tractor hydrostatic power steering system is united | |
| CN2900287Y (en) | Oil path distribution valve for automobile power steering | |
| CN202175091U (en) | Multi-mode steering hydraulic control system and wheel crane applying same | |
| CN104129373A (en) | Heat dissipation type brake system for forklift | |
| CN205168620U (en) | Quiet hydrostatic steering system of tractor | |
| CN201999699U (en) | Operational safety control system of diesel fork lift truck | |
| DE102012107777B4 (en) | STEERING SYSTEM FOR A TRAILING AXLE OF A VEHICLE | |
| CN112937535A (en) | Hydraulic parking and emergency trailer control device and wheeled engineering vehicle | |
| CN209395864U (en) | A kind of hydraulic system of wide dumper | |
| CN201272340Y (en) | Hydraulic motor brake loop | |
| CN104724165B (en) | Vehicle steering device, control method thereof and vehicle | |
| CN102442347B (en) | Emergency valve for double-loop power-assisted steering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 102206, Beijing, Shahe, Changping District Town, Sha Yang Road, Lao Wan Village North Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: Beiqi Futian Automobile Co., Ltd. |