CN203126944U - Centring oil cylinder of wheel-type steering mechanism - Google Patents
Centring oil cylinder of wheel-type steering mechanism Download PDFInfo
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- CN203126944U CN203126944U CN 201320129125 CN201320129125U CN203126944U CN 203126944 U CN203126944 U CN 203126944U CN 201320129125 CN201320129125 CN 201320129125 CN 201320129125 U CN201320129125 U CN 201320129125U CN 203126944 U CN203126944 U CN 203126944U
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- floating piston
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Abstract
A centering oil cylinder of a wheel-type steering mechanism comprises a cylinder body, a left end cover, a right end cover, a piston rod, a left oil mouth and a right oil mouth, and is characterized by further including a left floating piston, a right floating piston, a cylinder body positioning check ring, a piston positioning check ring and a middle oil mouth, wherein the cylinder body positioning check ring is fixed in the middle of the inner wall of the cylinder body; the piston positioning check ring is fixed on the external surface of the back part of the piston rod; the middle oil mouth is positioned in the middle of the wall of the cylinder body; the left floating piston and the left end cover form a left oil chamber; the right floating piston and the right end cover form a right oil chamber; and a middle oil chamber is formed between the left floating piston and the right floating piston.
Description
Technical field
The utility model relates to a kind of hydraulic ram, particularly a kind of centering oil cylinder for the vehicle rear bridge steering hardware.
Background technology
For adapting to complex job on-the-spot narrow place and long-range hoisting operation, all terrain crane need have the stability of running at high speed, and cross-country traveling ability can be realized characteristics such as four-wheel steering.General front steering axle is controlled by bearing circle, again to propons, connects by pull bar and to be equipped with steering jack simultaneously from the bearing circle to the steering box, wheel steering and turn to rear wheel just to return can to control by bearing circle.And on other vehicle bridge, especially in the multi-wheeled vehicle, generally also cancelled original mechanical rod-pulling type follow mechanism, adopt follow-up steering or the automatic centering system of hydraulic pressure and autonomous cruise speed system combination.
Application number is 201210422934.5 Chinese patent application publication document, a kind of " pivoted wheels on vehicle automatic centering unit, the vehicle that comprises it and automatic centering method " disclosed, comprise hydraulic steering gear, electro-hydraulic proportional valve group, angular transducer and Programmable Logic Controller etc., controller receives the angle signal from preceding bridge sensor, come by certain algorithm control electro-hydraulic proportional valve group according to selected angle mode, drive turns to the oil cylinder motion, thereby realizes the control requirement to the trailing wheel corner.It is accurate that this mode seems, but system complex, if especially vehicle is in the process of running at high speed during the tip-tap direction, back wheel flutter just produces corresponding servo-actuated rotation, will influence the stability of high vehicle speeds, therefore the maximum travel speed of vehicle is very restricted.
Summary of the invention
The purpose of this utility model is for overcoming defective of the prior art, and a kind of aligning gear of simple in structure, dependable performance is provided, and is a kind of centering oil cylinder of wheeled steering hardware specifically.
The purpose of this utility model realizes with following technical proposals:
A kind of centering oil cylinder of wheeled steering hardware, comprise cylinder body, left end cap, right end cap, piston rod, left oil port, right oil port is characterized in that, also comprise left floating piston, right floating piston is fixed on the cylinder body positioning retainer ring of described inboard wall of cylinder block midway location, is fixed on the piston positioning retainer ring of described piston rod external rear face, be arranged in the hydraulic fluid port of described cylinder wall portion midway location, described left floating piston becomes left oil pocket with described left end Geiger, and described right floating piston becomes right oil pocket with described right-hand member Geiger, is middle oil pocket between described left floating piston and the described right floating piston.
Description of drawings
Fig. 1 is structural representation of the present utility model
Among the figure, 1-left side ball pin, 2-left end cap, the 3-cylinder body, 4-left side floating piston, 5-cylinder body positioning retainer ring, 51-piston positioning retainer ring, the right floating piston of 6-, 7-right end cap, the 8-piston rod, the right ball pin of 9-, 10-hydraulic oil control cock, A-left side oil pocket, A1-left oil port, oil pocket among the B-, hydraulic fluid port among the B1-, the right oil pocket of C-, C1-right oil port.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
As Fig. 1, the centering oil cylinder of wheeled steering hardware of the present utility model is by cylinder body 3, left end cap 2, right end cap 7, piston rod 8, left oil port A1, right oil port C1 is characterized in that, also comprise left floating piston 4, right floating piston 6 is fixed on the cylinder body positioning retainer ring 5 of described cylinder body 3 inwall midways location, is fixed on the piston positioning retainer ring 51 of described piston rod 8 external rear face, be arranged in the hydraulic fluid port B1 of described cylinder body 3 wall portion midways location, described left floating piston 4 becomes left oil pocket A with described left end 2 Geigers, and 7 one-tenth right oil pocket C of described right floating piston 6 and described right-hand member Geiger are middle oil pocket B between described left floating piston 4 and the described right floating piston 6.
Its working process is, when the needs trailing wheel participates in turning to, HYDRAULIC CONTROL SYSTEM turns to oil cylinder to act on the vehicle bridge accordingly, finish handling maneuver, hydraulic oil control cock 10 in the wheel steering system communicates the fluid among left oil pocket A, the right oil pocket C respectively with oil return by left oil port A1, right oil port C1 simultaneously, oil pocket B one communicates with oil return straight through middle hydraulic fluid port B1 simultaneously, and at this moment, left floating piston 4, right floating piston 6 are in quick condition; Because the left end of centering oil cylinder of the present utility model is fixed on by left ball pin 1 on the bearing of vehicle bridge axle housing and maintains static, simultaneously, the right-hand member of centering oil cylinder of the present utility model links to each other with rear-axle steering mechanism by right ball pin 9, when turning to oil cylinder control wheel steering, rotation along with wheel, centering oil cylinder piston bar 8 can be made axial motion with respect to cylinder body 3, and drives left floating piston 4,6 motions of right floating piston; But when piston rod 8 was got back to meta, left and right sides floating piston 4,6 was not with piston rod 8 returns, and therefore, centering oil cylinder of the present utility model is very little very little to the cornering resistance that vehicle causes.
When not needing rear-axle steering, make fluid and the left oil pocket A of steering swivel system mesohigh energy storage by the hydraulic oil control cock 10 in the wheel steering system, right oil pocket C communicates, effect bottom left floating piston 4 at pressure oil, right floating piston 6 is to the direction motion of cylinder body positioning retainer ring 5, this moment, no matter piston rod 8 was where to be in, all can be by left floating piston 4 by its bottom, right floating piston 6 is shifted cylinder body onto fixedly on the back-up ring 5 by the piston positioning retainer ring 51 that is fixed on described piston rod 8 external rear face, left floating piston 4 of while, right floating piston 6 also by cylinder body fixedly back-up ring 5 block and no longer continue and move.Because piston rod 8 is connected with rear-axle steering mechanism, thus rear-axle steering mechanism also is pushed back along with piston rod 8 and therein the position locate.Do not participate in turning in rear-axle steering mechanism, or when high vehicle speeds, left and right sides oil pocket A, C can be communicated with high pressure accumulator in the steering swivel system always, under the oil pressure effect, the divertical motion of left side floating piston 4,6 pairs of piston rods 8 of right floating piston plays interception, make steering hardware be in the centering state all the time, thereby guarantee stability and the safety of high vehicle speeds.
Centering oil cylinder of the present utility model, can be under the pressure oil effect, vehicle bridge is in forces the centering state, thereby wheel is in the straight-line travelling state, solved well during many bridges turn to, beat the direction trailing wheel slightly just along with the problem that corner is arranged during the high speed traveling that occurs easily, guaranteed stability and safety that vehicle travels.
Claims (1)
1. the centering oil cylinder of a wheeled steering hardware, comprise cylinder body, left end cap, right end cap, piston rod, left oil port, right oil port is characterized in that, also comprise left floating piston, right floating piston is fixed on the cylinder body positioning retainer ring of described inboard wall of cylinder block midway location, is fixed on the piston positioning retainer ring of described piston rod external rear face, be arranged in the hydraulic fluid port of described cylinder wall portion midway location, described left floating piston becomes left oil pocket with described left end Geiger, and described right floating piston becomes right oil pocket with described right-hand member Geiger, is middle oil pocket between described left floating piston and the described right floating piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320129125 CN203126944U (en) | 2013-03-21 | 2013-03-21 | Centring oil cylinder of wheel-type steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320129125 CN203126944U (en) | 2013-03-21 | 2013-03-21 | Centring oil cylinder of wheel-type steering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203126944U true CN203126944U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320129125 Expired - Fee Related CN203126944U (en) | 2013-03-21 | 2013-03-21 | Centring oil cylinder of wheel-type steering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203126944U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434563A (en) * | 2013-09-03 | 2013-12-11 | 苏州巴吉赛车科技有限公司 | Split racer steering gear hydraulic cylinder piston device |
| CN105539573A (en) * | 2015-12-07 | 2016-05-04 | 三一汽车起重机械有限公司 | Steering active returning system and method for all-terrain crane |
| CN108980139A (en) * | 2018-07-24 | 2018-12-11 | 北京理工大学 | Double compact integrated steering centering hydraulic cylinders of rod-type out |
-
2013
- 2013-03-21 CN CN 201320129125 patent/CN203126944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434563A (en) * | 2013-09-03 | 2013-12-11 | 苏州巴吉赛车科技有限公司 | Split racer steering gear hydraulic cylinder piston device |
| CN105539573A (en) * | 2015-12-07 | 2016-05-04 | 三一汽车起重机械有限公司 | Steering active returning system and method for all-terrain crane |
| CN108980139A (en) * | 2018-07-24 | 2018-12-11 | 北京理工大学 | Double compact integrated steering centering hydraulic cylinders of rod-type out |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20150321 |
|
| EXPY | Termination of patent right or utility model |