CN2402573Y - Command-controlled steering gear - Google Patents
Command-controlled steering gear Download PDFInfo
- Publication number
- CN2402573Y CN2402573Y CN 99230209 CN99230209U CN2402573Y CN 2402573 Y CN2402573 Y CN 2402573Y CN 99230209 CN99230209 CN 99230209 CN 99230209 U CN99230209 U CN 99230209U CN 2402573 Y CN2402573 Y CN 2402573Y
- Authority
- CN
- China
- Prior art keywords
- valve
- guide
- steering
- pump
- connects
- 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 - Fee Related
Links
Images
Landscapes
- Power Steering Mechanism (AREA)
Abstract
The utility model discloses a command-controlled steering device used by loaders, tippers, etc. of wheel chassis engineering machines. The steering device comprises a main steering part and a guide part, wherein, the main steering part comprises a steering pump, a flow amplification valve and a steering oil cylinder, and the guide part comprises a guide pump, a guide control valve and a guide one-way valve. An oil tank is connected with the steering pump, the steering pump is connected with the flow amplification valve, and the flow amplification valve is connected with the steering cylinder. The oil tank is also connected with the guide pump, the guide pump is connected with the guide control valve, the guide control valve is connected with the guide one-way valve, and the guide one-way valve is connected with the flow amplification valve. The utility model has the advantages of simple structure, low cost, high control precision, high response time and low labor intensity.
Description
The utility model relates to the steering hardware that a kind of wheel undercarriage construction machinery and equipment such as loader, dumping car etc. use.
Known steering hardware is the flow gain steering hardware, and this device mainly connects steering pump, steering pump connection traffic amplifying valve by fuel tank, flux amplification valve connects steering cylinder, and fuel tank also connects pioneer pump, and pioneer pump connects deflector, deflector connects limit valve, and limit valve connection traffic amplifying valve constitutes.This device manoeuvrable, reliable, energy-conservation, turn to steadily, be applicable to big-and-middle-sized power type.But this apparatus structure complexity, cost is higher, is a kind of open ring control device, and control accuracy and response time are lower, and steering wheel angle and vehicle frame corner large percentage, so labour intensity is higher.
The purpose of this utility model is that a kind of instruction control steering hardware will be provided, and this apparatus structure is simple, cost is low, control accuracy and response time height, labour intensity are low.
The purpose of this utility model is achieved in that this steering hardware comprises the main two parts with the guide that turn to, main knuckle section comprises steering pump, flux amplification valve, turns to oil cylinder, the guide partly comprises pioneer pump, pilot-actuated valve, guide's check valve, fuel tank connects steering pump, steering pump connection traffic amplifying valve, and flux amplification valve connects steering cylinder, fuel tank also connects pioneer pump, pioneer pump connects pilot-actuated valve, and pilot-actuated valve connects guide's check valve, guide's check valve connection traffic amplifying valve.
Two valve openings are arranged in the valve body of described pilot-actuated valve, in two valve openings spool is housed respectively, plunger is equipped with in the bottom of spool, and the lower end of plunger abuts against on the plug screw.Relief spring is equipped with on the top of spool, the outside of relief spring is a retracing spring, relief spring and retracing spring all be contained in spring perch below, it above the spring perch push rod, be double-screw bolt above the push rod, double-screw bolt is contained on the rocking arm, and axle also is contained on the rocking arm by pin, all in the cover the inside, cover, pressing plate all link into an integrated entity by bolt and valve body for push rod, double-screw bolt, rocking arm, pin.
The utlity model has following advantage:
1. operate lightly, labour intensity is low, and steering safety is reliable.Known steering hardware can not be realized input and output corner
Be 1: 1 relation, this device realizes that first vehicle frame corner and bearing circle input corner are 1: 1 relations, like this
Can reduce labor intensity significantly.For general wheel undercarriage construction machinery and equipment, bearing circle rotates half-turn and gets final product
Realize turning to entirely, faster and more accurate control can be provided.This device can obviously reduce the number of turns of steering handwheel, one
The number of turns of rotating an average working day of platform loader (8 hours) can be reduced to 1000 by 10000 commentaries on classics changes, obviously
Reduce labour intensity.
2. this device is a kind of position follower closed loop control system, and the machine turning velocity depends on the position that bearing circle rotates, machine
The turning velocity of device does not rely on the velocity of rotation of bearing circle, operating characteristic excellence, control accuracy height.
3. adopt the load feedback control principle to make operation pressure and load pressure difference be always certain value, energy-saving effect is obvious,
Energy is the power of use device rationally.
Below in conjunction with drawings and Examples the utility model is elaborated.
Fig. 1 is the constructional drawing of an embodiment of the present utility model.
Fig. 2 is the controlling party block diagram of Fig. 1.
Fig. 3 is the constructional drawing of the pilot-actuated valve among Fig. 1.
Fig. 4 is that the A-A of Fig. 3 is to view.
1. guide's check valves among the figure, 2. pilot-actuated valve, 3. pioneer pump, 4. steering pump, 5. pressure-compensated valve, 6. master control spool, 7. steering cylinder, 8. flux amplification valve; 2-1. plug screw, 2-2. plunger, 2-3. valve body, 2-4. spool, 2-4-1. damping hole, 2-5. retracing spring, 2-5-1. relief spring, 2-6. spring perch, 2-7. push rod, 2-8. double-screw bolt, 2-9. cover, 2-10. pressing plate, 2-11. rocking arm, 2-12. pin, 2-13. axle.
In Fig. 1, the left side is main knuckle section, and right-hand part is guide's part.Fuel tank connects steering pump 4, steering pump 4 connection traffic amplifying valves 8, and flux amplification valve 8 connects steering cylinder 7, and fuel tank also connects pioneer pump 3, and pioneer pump 3 connects pilot-actuated valve 2, and pilot-actuated valve 2 connects guide's check valve 1, guide's check valve 1 connection traffic amplifying valve 8.
The oil of pioneer pump 3 is supplied with and is turned to pilot-actuated valve 2, when steering wheel rotation, turn to pilot-actuated valve 2 fuel feeding to guide's check valve 1, guide's check valve 1 fuel feeding is to master control spool 6 ends of the flux amplification valve 8 of main knuckle section, master control spool 6 end fluid produce pressure reduction by cutoff port, and this pressure reduction causes moving of master control spool 6.Because moving of master control spool 6, the pressure oil of steering pump 4 enters steering cylinder 7 by hydraulic fluid port A1, the B1 of steering flow amplifying valve 8, and pressure oil moves steering cylinder 7 piston rods, and this causes that machine turns to.Owing to turn to pilot-actuated valve 2 to be installed on the vehicle frame, machine turn to the valve body that passes to pilot-actuated valve 2 by vehicle frame, the valve body of pilot-actuated valve 2 is rotated along equidirectional, the valve body hydraulic fluid port aperture of the relative pilot-actuated valve 2 of spool of the pilot-actuated valve 2 that the rotation of bearing circle causes is tending towards closing because the rotation of the valve body of pilot-actuated valve 1 makes, if certain aperture is arranged this moment all the time, guide oil is given the two ends fuel feeding of master control spool 6 all the time by guide's check valve 1, there is pressure reduction in the two ends of master control spool 6 always, make master control spool 6 remain on certain position, steering pump 4 is just given steering cylinder 7 by flux amplification valve 8 fuel feeding all the time, and machine just turns to and continues always.If cancel the power that acts on the bearing circle, vehicle frame feeds back to the rotation of machine the valve body of pilot-actuated valve 2, cause the motion of spool of the relative pilot-actuated valve 2 of valve body of pilot-actuated valve 2, the hydraulic fluid port aperture of valve body of the relative pilot-actuated valve 2 of spool of pilot-actuated valve 2 is closed, guide oil will not resupply the two ends that turn to master control spool 6, and master control spool 6 is got back to meta, and the oil of steering pump 4 does not resupply steering cylinder 7 yet, steering cylinder 7 piston stop motions turn to promptly to stop.If steering wheel rotation round about, machine just turns in the opposite direction, and steering procedure in like manner.
In Fig. 3 and Fig. 4, two valve openings are arranged in the valve body 2-3 of pilot-actuated valve 2, in two valve openings spool 2-4 is housed respectively, plunger 2-2 is equipped with in the bottom of spool 2-4, and the lower end of plunger 2-2 abuts against on the plug screw 2-1.Relief spring 2-5-1 is equipped with on the top of spool 2-4, the outside of relief spring 2-5-1 is retracing spring 2-5, relief spring 2-5-1 and retracing spring 2-5 all be contained in spring perch 2-6 below, above the spring perch 2-6 push rod 2-7, above the push rod 2-7 double-screw bolt 2-8, double-screw bolt 2-8 is contained on the rocking arm 2-11, the end of axle 2-13 also is contained on the rocking arm by pin, the other end of axle 2-13 is by universal-joint closure dish, push rod 2-7, double-screw bolt 2-8; rocking arm 2-11; pin 2-12 is in the cover the inside; cover 2-9; pressing plate 2-10 links into an integrated entity by bolt and valve body 2-3, has so just formed pilot-actuated valve 2.
Steering wheel rotation during work, bearing circle will rotatablely move and pass to rocking arm 2-11 by universal-joint, axle 13 connections; rocking arm 2-11 will rotatablely move and be converted into straight-line motion; promote push rod 2-7 by double-screw bolt 2-8; push rod 2-7 promotes spring perch 2-6; spring perch 2-6 extruding relief spring 2-5-1, relief spring 2-5-1 promotes spool 2-4, makes the opening of the relative valve body 2-3 of spool 2-4 that certain aperture be arranged.Control oil from the oil that oil inlet P is come by this opening output guide.The pressure of this hydraulic fluid port feeds back to spool 2-4 by the damping hole 2-4-1 on the spool 2-4 simultaneously, make spool 2-4 be subjected to a kind of power opposite with spring force, the making a concerted effort of this two power make hydraulic fluid port be in a kind of suitable aperture, guarantee the stable of delivery pressure, thereby realized the proportionate relationship of input angle and delivery pressure.The bearing circle that stops operating, spool 2-4 gets back to initial position under the effect of retracing spring 2-5.Valve port is closed, and actuator port also stops to export the guide and controls oil.If steering wheel rotation round about, its principle of work in like manner.
Claims (2)
1. instruction control steering hardware, this steering hardware comprises the main two parts with the guide that turn to, main knuckle section comprises steering pump, flux amplification valve, turns to oil cylinder, and the guide partly comprises pioneer pump, and fuel tank connects steering pump, steering pump connection traffic amplifying valve, flux amplification valve connects steering cylinder, and fuel tank also connects pioneer pump, it is characterized in that pioneer pump connects pilot-actuated valve, pilot-actuated valve connects guide's check valve, guide's check valve connection traffic amplifying valve.
2. instruction control steering hardware according to claim 1, it is characterized in that in the valve body of pilot-actuated valve two valve openings being arranged, in two valve openings spool is housed respectively, plunger is equipped with in the bottom of spool, the lower end of plunger abuts against on the plug screw, relief spring is equipped with on the top of spool, the outside of relief spring is a retracing spring, relief spring and retracing spring all be contained in spring perch below, be push rod above the spring perch, be double-screw bolt above the push rod, double-screw bolt is contained on the rocking arm, axle also is contained on the rocking arm push rod by pin, double-screw bolt; rocking arm; pin is all at cover the inside, cover; pressing plate all links into an integrated entity by bolt and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230209 CN2402573Y (en) | 1999-12-03 | 1999-12-03 | Command-controlled steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230209 CN2402573Y (en) | 1999-12-03 | 1999-12-03 | Command-controlled steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2402573Y true CN2402573Y (en) | 2000-10-25 |
Family
ID=34019339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230209 Expired - Fee Related CN2402573Y (en) | 1999-12-03 | 1999-12-03 | Command-controlled steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2402573Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001435A (en) * | 2010-10-26 | 2011-04-06 | 广西梧州运龙港船机械制造有限公司 | Marine hydraulic steering engine |
| CN102052361A (en) * | 2010-11-02 | 2011-05-11 | 王开怀 | Novel hydraulic oil channel integrated valve for loader |
| CN102673640A (en) * | 2012-06-14 | 2012-09-19 | 中国航天三江集团公司 | Hydraulic steering system |
| CN103552597A (en) * | 2013-10-30 | 2014-02-05 | 中联重科股份有限公司 | Hydraulic steering system and road roller |
| CN103921838A (en) * | 2013-01-16 | 2014-07-16 | 索尔-丹佛斯公司 | A Hydraulic Steering Control Arrangement |
| CN110588772A (en) * | 2019-09-04 | 2019-12-20 | 冀凯河北机电科技有限公司 | Steering control valve for steering wheel of crawler vehicle |
-
1999
- 1999-12-03 CN CN 99230209 patent/CN2402573Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001435A (en) * | 2010-10-26 | 2011-04-06 | 广西梧州运龙港船机械制造有限公司 | Marine hydraulic steering engine |
| CN102001435B (en) * | 2010-10-26 | 2013-04-03 | 广西梧州运龙港船机械制造有限公司 | Marine hydraulic steering engine |
| CN102052361A (en) * | 2010-11-02 | 2011-05-11 | 王开怀 | Novel hydraulic oil channel integrated valve for loader |
| CN102052361B (en) * | 2010-11-02 | 2013-03-06 | 王开怀 | Novel hydraulic oil channel integrated valve for loader |
| CN102673640A (en) * | 2012-06-14 | 2012-09-19 | 中国航天三江集团公司 | Hydraulic steering system |
| CN103921838A (en) * | 2013-01-16 | 2014-07-16 | 索尔-丹佛斯公司 | A Hydraulic Steering Control Arrangement |
| US9261084B2 (en) | 2013-01-16 | 2016-02-16 | Danfoss Power Solutions Aps | Hydraulic control arrangement |
| CN103921838B (en) * | 2013-01-16 | 2017-01-04 | 丹佛斯动力系统有限公司 | Hydraulic control is arranged |
| CN103552597A (en) * | 2013-10-30 | 2014-02-05 | 中联重科股份有限公司 | Hydraulic steering system and road roller |
| CN110588772A (en) * | 2019-09-04 | 2019-12-20 | 冀凯河北机电科技有限公司 | Steering control valve for steering wheel of crawler vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1588057B1 (en) | Hydraulic system for linear drives controlled by a displacer element | |
| DE4136084C2 (en) | Method and device for controlling an excavator | |
| DE69109877T2 (en) | Energy saving circuit in a hydraulic device. | |
| CN203926235U (en) | Have many actuators loop without throttling hydraulic system | |
| DE10109351A1 (en) | Hydraulic device for industrial vehicles | |
| US4449366A (en) | Hydraulic control system for off-highway self-propelled work machines | |
| CN112550444B (en) | Energy-saving type electro-hydraulic power-assisted steering system for heavy vehicle and control method | |
| DE202007011783U1 (en) | Hydraulic drive, in particular an excavator, in particular for a slewing gear | |
| DE2612219A1 (en) | PRESSURE-ACTUATED LOAD CLAMPING DEVICE, IN PARTICULAR FOR A PALLET TRUCK | |
| CN2402573Y (en) | Command-controlled steering gear | |
| EP1567403B1 (en) | Hydraulic steering mechanism for vehicles | |
| CN108556910A (en) | A kind of all-wheel control system | |
| DE112021002970T5 (en) | HYDRAULIC DELAY CONTROL SYSTEM | |
| DE19930648A1 (en) | Electrohydraulic pressure supply with adjustable pump and adjustable electric drive | |
| DE3640305C2 (en) | ||
| DE2857852C2 (en) | ||
| DE3900887C2 (en) | Valve arrangement for actuating the telescopic cylinder of a truck tipper | |
| DE3539607C2 (en) | ||
| US4972915A (en) | Hydraulic steering apparatus | |
| CN2280811Y (en) | Hand-driven change valve | |
| DE3508691C1 (en) | Hydraulic earthworks vehicle with a slewable boom | |
| DE4243578A1 (en) | Hydraulic circuit for garbage truck | |
| CN213323339U (en) | Hydraulic control device for steering, hanging and lifting of greenhouse crawler-type electric tractor | |
| DE10151831A1 (en) | Hydraulic system for an industrial truck has an additional connection valve linking the load pressure line to the transport line so that a storage brake can be activated without simultaneous movement of a hydraulic load | |
| Jin et al. | Design and optimization of an automatic hydraulic steer-by-wire system for an agricultural chassis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |