CN2374430Y - Synchronous steering system of multi-shaft semitrailer - Google Patents
Synchronous steering system of multi-shaft semitrailer Download PDFInfo
- Publication number
- CN2374430Y CN2374430Y CN 99201217 CN99201217U CN2374430Y CN 2374430 Y CN2374430 Y CN 2374430Y CN 99201217 CN99201217 CN 99201217 CN 99201217 U CN99201217 U CN 99201217U CN 2374430 Y CN2374430 Y CN 2374430Y
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 18
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 206010049244 Ankyloglossia congenital Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
A synchronous steering system for multi-axle semi-trailer steering. The steering system comprises a cam mechanism, a lever, a power cylinder, a feedback cylinder, a distribution valve, a steering rod system and a steering oil source. The cam mechanism is mounted on a traction pin, and ensures that all trailer wheels and tractor wheels rotate around the same instant center together with a distribution valve and a feedback cylinder during steering, the power cylinder is connected with the feedback cylinder in series, one end of the power cylinder is fixed on a trailer frame, the other end of the power cylinder pushes a steering rocker arm, a steering rod system ensures the rotation angle relation between the wheels, and a steering oil source takes power from an engine of the tractor. The product has simple structure and convenient operation, does not need to greatly change the trailer, and can greatly improve the maneuvering performance of the semitrailer.
Description
The utility model relates to the synchronous steering swivel system of a kind of multiaxis superimposed trailer.
Semitrailer is the important component part of carrier, and the trailer of present domestic most superimposed trailers does not partly have the function of turning to, and the minimum turning radius and the maximum channel width of car load are big, and maneuvering performance is poor; And trailer wheels can not be made pure rolling when turning, and sideslip is arranged, and wear on tyres is serious.The superimposed trailer that this nothing turns to can not transport the superduty goods because above-mentioned shortcoming trailer number of axle amount is restricted, and does not adapt to the development of carrier.The superimposed trailer that also has a kind of axle steer formula, this kind superimposed trailer is equipped with hydraulic actuating cylinder at the Trailer car shaft place, makes the corresponding rotation with wheel of Trailer car shaft by hydostatic transmission when tractor truck turns to, and has improved the maneuverability of superimposed trailer, has suitably reduced Tyte Wear.Transversal displacement is bigger during the semi-trailer direction changing of this axle steer formula, turns to servo-actuated poor, can not guarantee that still trailer wheels and tractor truck wheel promptly turn to synchronously around same instantaneous rotation.Also have only a few to be used for the superimposed trailer of defence product transportation, adopted the hydrodynamic power-assisted, the steering hardware of quiet liquid feedback can satisfy operating needs, but complex structure, cost height are not easy to promote.
The utility model purpose is to adopt that hydrodynamic power-assisted, hydrodynamic feedback realize the multiaxis superimposed trailer turns to function synchronously, and all wheels of trailer all turn to instantaneous rotation with the tractor truck wheel around same, improves the maneuvering performance of superimposed trailer greatly, reduces wear on tyres.It is with low cost, and is simple in structure, easy to operate, does not need trailer is done big change.
The utility model comprises cam mechanism, lever, servo cylinder, feedback cylinder, distributing valve, steering gear connection and turns to oil sources.Wherein the lobe plate of cam mechanism is installed on the towing pin, angle between tractor truck axis and the trailer axis is converted into displacement signal promotes distributing valve, and all trailer wheelss and tractor truck wheel turn to instantaneous rotation around same during with feedback cylinder common guarantee semi-trailer direction changing; Lever links to each other with signal level, feedback hydraulic cylinder, distributing valve in the cam signal mechanism respectively, guarantees that cam signal passes to distributing valve by a certain percentage; Servo cylinder is by turning to oil sources to drive, and an end is fixed in the Trailer type frame for use in vehicle other end and promotes pitman arm, and then realizes the rotation of trailer wheels; The feedback cylinder is connected with servo cylinder, is reverse sync, realizes the hydrodynamic feedback of system; Distributing valve is a guiding valve, is subjected to cam signal mechanism and the combined action of feedback hydraulic cylinder; Steering gear connection is installed on trailer, and its vertical leverage guarantees the angle relation of trailer between centers wheel, and laterally leverage guarantees the angle relation of wheel between the trailer wheel; Turn to the engine torque extraction mouth power taking of oil sources from tractor truck.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 always schemes for layout of the present utility model
Fig. 2 is the semi-trailer direction changing scheme drawing
Fig. 3 is the follow-up steering scheme drawing
Fig. 4 is the steering hydraulic system schematic diagram
Fig. 5 is the recharging oil device scheme drawing
Fig. 6 is the steering gear connection scheme drawing
Referring to accompanying drawing 1,2,3, the lobe plate 15 of present embodiment cam mechanism 2 is installed on the towing pin 16, the cam signal bar 14 P point that links to each other with lever 13 middle parts, the push rod 12 of lever 13 1 ends and distributing valve 3 is connected in the N point, and the other end is connected in the M point with the pull bar 11 of feedback cylinder 4.When the chaufeur steering wheel rotation, the tractor truck wheel steering, tractor truck axis 7 produces relative angle A with trailer axis 8, and cam mechanism 2 is converted into displacement signal Q with this angle signal.Because there is big resistance on trailer wheels and ground, wheel can not deflection, and servo cylinder 5, feedback cylinder 4 can not move, and this moment, the M point was motionless and as the fulcrum of lever 13, and under 14 drives of cam signal bar, the P point moves to P ', and the N point moves on to N ', and its miles of relative movement is X.The corresponding mobile X of distributing valve 3 spools, valve port is opened, and the hydraulic oil that turns to oil sources 1 to provide enters servo cylinder 5, and the fluid pressure that is obstructed rises, and promotes piston rod 10 and moves to left until overcoming resistance.Servo cylinder piston rod 10 promotes pitman arm 9, and then makes trailer wheels deflection respective angles by steering gear connection 6.Feedback hydraulic cylinder 4 is reverse sync with servo cylinder 5, and feedback cylinder pitch brace 11 moved to left under the oil pressure effect when servo cylinder 5 produced motion, and it is that fulcrum rotates with P ' that feedback cylinder pull bar 11 hauls lever 13, and the M point moves to M ', and N ' is back to the N point.This moment distributing valve 3 valve core returns, valve port closes valve.Trailer wheels keeps certain corner, i.e. chaufeur steering wheel rotation certain angle, trailer wheels and tractor truck wheel turn an angle around same instantaneous 0, finish turning to synchronously of superimposed trailer.
Referring to Fig. 4, steering hydraulic system comprises and turns to oil sources 1, distributing valve 3, feedback cylinder 4 and servo cylinder 5.Turn to oil sources 1 by oil pump 18, turn to fuel tank 19, oil filter 20, safety valve 21, transfer valve 22 is formed fast.Turn to the driving engine 17 of the power resources of oil sources 1 in tractor truck, oil pump 18 links to each other with driving engine 17 power taking mouths.Safety valve 21 is used for limiting the top pressure of hydraulic efficiency pressure system.Transfer valve 22 is made up of change-over switch 23 and quick coupling 24 fast, and quick coupling 24 is the self-sealing joint, is installed on the tractor truck afterbody.Close change-over switch 23 when tractor truck and trailer when hanging, connect quick coupling 24, turn to oil sources 1 to be trailer power is provided.Open change-over switch 23 when taking off when hanging, throw off quick coupling 24, turn to oil sources 1 to have relief circuit of one's own.
Referring to Fig. 5, feedback cylinder 4 is connected with servo cylinder 5, and the two is a reverse sync.When servo cylinder piston 26 end of to, when B chamber volume was zero, the feedback cylinder piston 27 also corresponding C chamber volumes that make the end of to were zero.If the 27 unlikely ends of feedback cylinder piston, illustrate that B, D chamber leaked a part of oil, corresponding for the initial position that guarantees cam with the initial corner of wheel, the check valve 25 that two repairings are used is housed on the servo cylinder piston 26.During repairing, wheel is deflected to end position, check valve 25 contacts on the servo cylinder piston 26 withstand oil cylinder bottom, and check valve 25 is opened, and oil enters B chamber, D chamber from the A chamber, until C chamber oil is got rid of, and the bottom that makes feedback cylinder piston 27 also withstand feedback cylinder 4.
Referring to Fig. 6, steering gear connection is installed on trailer, is made up of vertical leverage and horizontal leverage.The two all adopts four-bar linkage.Vertically the transmission leverage is made up of pitman arm 9, longitudinal tie 28, drag link 29, track arm 30.Servo cylinder 5 one ends are fixed on the Trailer type frame for use in vehicle, and the other end promotes pitman arm 9, realize turning to by moving each wheel of longitudinal rod frenulum, and are controlled the angle relation of wheel between each vehicle bridge by the geometric relationship of leverage.The cross-drive leverage is made up of tierod 31, tie rod arm 32, guarantees the angle relation between coaxial inside and outside wheel.
The utility model compared with prior art has following advantage:
Since the utility model be that multi-axle smei-trailer synchronous turns to, the semitrailer min. turning radius and Maximum reduces greatly by width, has greatly improved the mobility of semitrailer.
2. because the utility model adopts cam mechanism, with the angle of tractor axis and trailer axis The displacement signal that signal is converted into through cam promotes distributing valve trailer is turned to, and servo-actuated property is strong, synchronous Turn to the precision height, tire wear greatly reduces.
3. because the utility model adopts the feedback hydraulic cylinder to connect with servo cylinder, both reverse sync are the hydrodynamic feedback, and are simple in structure, reliable.
4. practical, do not need trailer is carried out big improvement, easy to operate, with low cost.
Claims (5)
1. a synchronous steering swivel system that is used for the multiaxis semi-trailer direction changing comprises cam mechanism, lever, servo cylinder, feedback cylinder, distributing valve, steering gear connection and turns to oil sources, and it is characterized in that: the lobe plate of its cam mechanism is installed on the towing pin; Lever links to each other with cam signal bar, feedback cylinder, distributing valve respectively; Servo cylinder is connected with the feedback hydraulic cylinder, and servo cylinder one end is fixed on the Trailer type frame for use in vehicle, and the other end promotes pitman arm; Distributing valve is a guiding valve; Steering gear connection is installed on trailer; Turn to the engine torque extraction of oil sources from tractor truck.
2. according to the synchronous steering swivel system of the described multiaxis superimposed trailer of claim 1, it is characterized in that the lobe plate of cam signal mechanism is installed on the towing pin.
3. according to the synchronous steering swivel system of the described multiaxis superimposed trailer of claim 1, it is characterized in that the feedback hydraulic cylinder connects with servo cylinder, the two is a reverse sync, realizes the hydrodynamic feedback.
4. according to the synchronous steering swivel system of the described multiaxis superimposed trailer of claim 1, it is characterized in that on the piston of servo cylinder the check valve that two repairings are used being housed.
5. according to the synchronous steering swivel system of the described multiaxis superimposed trailer of claim 1, it is characterized in that lever links to each other with cam signal bar, feedback cylinder, distributing valve respectively, the cam signal bar is connected in the lever middle part, feedback cylinder, distributing valve are connected to the two ends of lever, and the assurance cam signal is passed to distributing valve by a certain percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201217 CN2374430Y (en) | 1999-02-02 | 1999-02-02 | Synchronous steering system of multi-shaft semitrailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201217 CN2374430Y (en) | 1999-02-02 | 1999-02-02 | Synchronous steering system of multi-shaft semitrailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2374430Y true CN2374430Y (en) | 2000-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99201217 Expired - Fee Related CN2374430Y (en) | 1999-02-02 | 1999-02-02 | Synchronous steering system of multi-shaft semitrailer |
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| Country | Link |
|---|---|
| CN (1) | CN2374430Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971777A (en) * | 2010-05-21 | 2013-03-13 | 马克思-普朗克科学促进协会 | Motion simulator and corresponding method |
| CN104015797A (en) * | 2014-06-20 | 2014-09-03 | 徐州重型机械有限公司 | Gadding car |
| CN104608819A (en) * | 2014-12-04 | 2015-05-13 | 中联重科股份有限公司 | Multi-axle steering system for multi-axle vehicle and multi-axle vehicle |
| CN105564506A (en) * | 2016-02-23 | 2016-05-11 | 东北农业大学 | Wheel follow-up steering sensing control device of multi-axle trailer |
| CN105667588A (en) * | 2016-03-17 | 2016-06-15 | 南通润邦重机有限公司 | Multi-shaft full-wheel steering device and engineering machine with multi-shaft full-wheel steering device |
-
1999
- 1999-02-02 CN CN 99201217 patent/CN2374430Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971777A (en) * | 2010-05-21 | 2013-03-13 | 马克思-普朗克科学促进协会 | Motion simulator and corresponding method |
| CN102971777B (en) * | 2010-05-21 | 2015-12-02 | 马克思-普朗克科学促进协会 | Motion simulator and corresponding method |
| CN104015797A (en) * | 2014-06-20 | 2014-09-03 | 徐州重型机械有限公司 | Gadding car |
| CN104608819A (en) * | 2014-12-04 | 2015-05-13 | 中联重科股份有限公司 | Multi-axle steering system for multi-axle vehicle and multi-axle vehicle |
| CN105564506A (en) * | 2016-02-23 | 2016-05-11 | 东北农业大学 | Wheel follow-up steering sensing control device of multi-axle trailer |
| CN105667588A (en) * | 2016-03-17 | 2016-06-15 | 南通润邦重机有限公司 | Multi-shaft full-wheel steering device and engineering machine with multi-shaft full-wheel steering device |
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| 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 |