CN201354098Y - Loader synchronous steering gear used for articulated vehicle frames - Google Patents
Loader synchronous steering gear used for articulated vehicle frames Download PDFInfo
- Publication number
- CN201354098Y CN201354098Y CNU2009200374432U CN200920037443U CN201354098Y CN 201354098 Y CN201354098 Y CN 201354098Y CN U2009200374432 U CNU2009200374432 U CN U2009200374432U CN 200920037443 U CN200920037443 U CN 200920037443U CN 201354098 Y CN201354098 Y CN 201354098Y
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- CN
- China
- Prior art keywords
- loader
- steering
- pivotally connected
- synchronous steering
- vehicle frame
- 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.)
- Expired - Lifetime
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- Power Steering Mechanism (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
The utility model relates to a loader synchronous steering gear used for articulated vehicle frames, belonging to the engineering mechanical control and technical fields. The system comprises a carriage which is mounted with steering wheels and is in the integral structure. A wheel shaft of the steering wheel is hinged with the carriage and is fixedly connected with one end of a steering arm, the other end of the steering arm is hinged with an external end of a hydraulic cylinder piston, and a hydraulic cylinder is mounted on the carriage. The loader synchronous steering gear enhances stability and safety of high-speed driving, provides smaller turning radius, reduces the abrasion of tires, and overcomes the defect that the original technical steering process state is not unique, and more automotive flexibility of loaders can be brought.
Description
Technical field
The utility model relates to a kind of synchronous steering hardware of loader that is used for pivotally connected frame, and especially a kind of loader that can make is more prone to realize the system that turns to synchronously, belongs to the engineering machinery control technology field.
Background technology
At present, most loaders all uses articulated steering mechanism on the market.The vehicle frame that is loader is made up of for two sections front and back, links to each other with vertical hinge pin axle between the forward and backward vehicle frame, and forward and backward vehicle frame is kept or the change relative angle by the flexible of left and right two oil cylinders, thereby make Vehicular turn.This class adopts the existing loader of radial type front and back vehicle frame to have following shortcoming: the first, and vehicle directional balance when running at high speed is poor; The second, owing to being that turning center turns to the hinge-point, the wearing and tearing of front and rear wheel are very serious; The 3rd, turn to mode to change in the steering procedure with the variation of load, fixedly fixing this two states of back segment frame-steering of leading portion frame-steering or leading portion vehicle frame of back segment vehicle frame takes place easily, thereby makes chaufeur produce wrong judgement to steering procedure.
The utility model content
The purpose of this utility model is: the shortcoming at above-mentioned prior art exists proposes a kind of good stability, can reduce wear on tyres, and has the synchronous steering hardware of the loader that is used for pivotally connected frame of unique steering state.
In order to reach above purpose, the technical solution adopted in the utility model is: the synchronous steering hardware of loader that is used for pivotally connected frame comprises the vehicle frame that steered wheel is installed, and described vehicle frame is an one-piece construction; The wheel shaft and the vehicle frame of described steered wheel are hinged, and are connected with an end of spindle arm; The other end of described spindle arm and the outer end of hydraulic cylinder piston are hinged; Described hydraulic actuating cylinder is placed on the vehicle frame.
When making hydraulic cylinder piston as required during expanding-contracting action, will deflect with respect to vehicle frame by the wheel shaft that spindle arm drives steered wheel, thereby realize the required control that turns to synchronously by controlling hydraulic efficiency pressure system.
Facts have proved, the utility model has improved the stability and the safety of running at high speed, and littler turn radius is provided, and has reduced Tyte Wear, and overcome the not unique shortcoming of original technology steering procedure state, can bring bigger maneuverability to loader.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the hydraulic control system figure of Fig. 1 embodiment.
Among the figure, 1 bearing circle, 2 steering angle sensors, 3 turn to analog machine, 4 hydraulic system pumps, 5 driving engines, 6 electrohydraulic servo valves, 7 hydraulic actuating cylinders, 8 displacement pickups, 9 car speed sensors, 10 ECU (Electrical Control Unit), 11 gears, 12 motors, 1 ' steered wheel, 2 ' spindle arm, 5 ' vehicle frame.
The specific embodiment
Embodiment one
The synchronous steering hardware of loader that present embodiment is used for pivotally connected frame as shown in Figure 1, unit frame 5 ' is equipped with steered wheel 1 '.The wheel shaft of steered wheel 1 ' and vehicle frame 5 ' is hinged by hinge pin, and is connected with an end of spindle arm 2 '.The piston outer end of the other end of this spindle arm and hydraulic actuating cylinder 7 is hinged.This hydraulic actuating cylinder is away from hinged being placed on the vehicle frame 5 ' of an end of piston outer end.In addition, be attached with displacement pickup 8 on the hydraulic actuating cylinder 7, the sensing head of this displacement pickup is attached on the piston rod.
The hydraulic control system of this synchronous steering hardware as shown in Figure 2, hydraulic system pump 4 liquid outlets that driving engine 5 drives connect four hydraulic actuating cylinders 7 respectively by the electrohydraulic servo valve 6 that is controlled by ECU (Electrical Control Unit). Bearing circle 1 and 11 coaxial connections of big gear wheel, big gear wheel 11 and the motor 12 main shaft pinion that are controlled by ECU (Electrical Control Unit) 10.The mouth that is placed in steering angle sensor 2 on the bearing circle 1 and each displacement pickup 8 connects the corresponding input end of ECU (Electrical Control Unit) respectively.
Chaufeur steering wheel rotation 1, turn to motor 12 in the analog machine 3 to be subjected to the control of ECU (Electrical Control Unit) 10, produce the simulation cornering resistance through big gear wheel 11 transfer torques suitable road feel is provided, steering angle displacement pickup 2 produces voltage signal and passes to ECU (Electrical Control Unit) 10 simultaneously, ECU (Electrical Control Unit) 10 draws four corresponding corners of wheel according to the data of steering angle and car speed sensor 9, by electrohydraulic servo valve 6 controls, the hydraulic power that driving engine 5 and hydraulic system pump 4 are provided is transferred to four hydraulic actuating cylinders 7 respectively, make hydraulic cylinder piston expanding-contracting action as required, the wheel shaft that drives steered wheel by spindle arm deflects with respect to vehicle frame, produces handling maneuver.Thereby ECU (Electrical Control Unit) 10 realizes the control that closed loop turns to by the data that displacement pickup 8 obtains current deflection angle.
In a word, the steering swivel system of present embodiment reaches the effect that turns to synchronously by controlling four wheels corner separately.The chaufeur steering wheel rotation turns to analog machine to be subjected to the control of ECU (Electrical Control Unit), produces the simulation cornering resistance by motor internal and a pair of reducing gear suitable road feel is provided.Turn to analog machine to obtain the correspondent voltage value simultaneously and pass to ECU (Electrical Control Unit) by its steering angle displacement pickup.ECU (Electrical Control Unit) realizes turning to according to the actuating unit that turns to that the speed of a motor vehicle and steering angle are controlled four wheels respectively by servovalve.Four wheels take independent control to allow the front and back deflection angle by independent setting, the variable ratio of front and back corner.Inside and outside wheel steering angle independently is provided with assurance and is used for the synchronous steering hardware n of the loader steering condition that the synchronous steering hardware ckerm of loader of pivotally connected frame is used for pivotally connected frame.Electrohydraulic actuator is by linear displacement transducer, and hydraulic actuating cylinder is formed, and the linear displacement transducer transmission fluid cylinder pressure displacement data of electrohydraulic actuator is realized closed loop control to ECU (Electrical Control Unit) in the steering procedure.
The synchronous steering hardware that experiment showed, present embodiment can effectively improve the stability of running at high speed, and increases its driving safety.Littler turn radius is provided, raises labour efficiency.Reduce Tyte Wear, and overcome the not unique shortcoming of steering procedure.And can realize that the crab row turns to pattern to bring bigger maneuverability to loader.
Claims (6)
1. the synchronous steering hardware of loader that is used for pivotally connected frame comprises the vehicle frame that steered wheel is installed, and it is characterized in that: described vehicle frame is an one-piece construction; The wheel shaft and the vehicle frame of described steered wheel are hinged, and are connected with an end of spindle arm; The other end of described spindle arm and the outer end of hydraulic cylinder piston are hinged; Described hydraulic actuating cylinder is placed on the vehicle frame.
2. the synchronous steering hardware of loader that is used for pivotally connected frame according to claim 1 is characterized in that: described hydraulic actuating cylinder is placed on the described vehicle frame away from an end of piston outer end is hinged.
3. the synchronous steering hardware of loader that is used for pivotally connected frame according to claim 2, it is characterized in that: be attached with displacement pickup on the described hydraulic actuating cylinder, the sensing head of described displacement pickup is attached on the piston rod.
4. the synchronous steering hardware of loader that is used for pivotally connected frame according to claim 3, it is characterized in that: the liquid outlet of hydraulic system pump connects described hydraulic actuating cylinder by the electrohydraulic servo valve that is controlled by ECU (Electrical Control Unit).
5. the synchronous steering hardware of loader that is used for pivotally connected frame according to claim 4, it is characterized in that: bearing circle is connected with big gear wheel is coaxial, described big gear wheel and the electric machine main shaft pinion that is controlled by ECU (Electrical Control Unit).
6. the synchronous steering hardware of loader that is used for pivotally connected frame according to claim 5 is characterized in that: the mouth that is placed in steering angle sensor on the described bearing circle and described displacement pickup connects the corresponding input end of described ECU (Electrical Control Unit) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200374432U CN201354098Y (en) | 2009-02-13 | 2009-02-13 | Loader synchronous steering gear used for articulated vehicle frames |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200374432U CN201354098Y (en) | 2009-02-13 | 2009-02-13 | Loader synchronous steering gear used for articulated vehicle frames |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201354098Y true CN201354098Y (en) | 2009-12-02 |
Family
ID=41410439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200374432U Expired - Lifetime CN201354098Y (en) | 2009-02-13 | 2009-02-13 | Loader synchronous steering gear used for articulated vehicle frames |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201354098Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126912A (en) * | 2019-05-13 | 2019-08-16 | 成都凯天电子股份有限公司 | Control back the self-aligning steering system of positive locomotive work platform |
| US11447374B2 (en) | 2016-09-15 | 2022-09-20 | Terex Australia Pty Ltd | Crane counterweight and suspension |
-
2009
- 2009-02-13 CN CNU2009200374432U patent/CN201354098Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11447374B2 (en) | 2016-09-15 | 2022-09-20 | Terex Australia Pty Ltd | Crane counterweight and suspension |
| CN110126912A (en) * | 2019-05-13 | 2019-08-16 | 成都凯天电子股份有限公司 | Control back the self-aligning steering system of positive locomotive work platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091202 |