CN204250156U - A kind of semi-monolithic formula hydraulic booster multi-axle steering system - Google Patents
A kind of semi-monolithic formula hydraulic booster multi-axle steering system Download PDFInfo
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- CN204250156U CN204250156U CN201420783783.0U CN201420783783U CN204250156U CN 204250156 U CN204250156 U CN 204250156U CN 201420783783 U CN201420783783 U CN 201420783783U CN 204250156 U CN204250156 U CN 204250156U
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- steering
- steering gear
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Abstract
The utility model discloses a kind of semi-monolithic formula hydraulic booster multi-axle steering system, comprise bearing circle, semi-integral type hydraulic assistance steering device, all-hydraulic steering gear, first steering pump, second steering pump, fuel tank and at least two steeraxles, semi-integral type hydraulic assistance steering device comprises manual steering gear and guiding valve, guiding valve respectively with the first steering actuation cylinder of the first propons, first steering pump connects, the input screw rod be connected with the spool of guiding valve is provided with in the shell of manual steering gear, and by steel ball and the piston that is connected of input screw flight, all-hydraulic steering gear respectively with the second steering actuation cylinder of back axle, second steering pump connects, piston to be threaded output screw by steel ball, the shell of manual steering gear is fixed with lower cover, output screw is arranged on down by bearing and covers, output screw is connected with all-hydraulic steering gear.This structure coordinates transferring power to all-hydraulic steering gear by piston and output screw, can ensure that propons and back axle turn to simultaneously.
Description
Technical field
The utility model relates to automobile steering system, particularly a kind of semi-monolithic formula hydraulic booster multi-axle steering system.
Background technology
Many bridges car causes turn radius large because load carrying ability is large, vehicle body is long, turn to difficulty, this type of vehicle generally adopt multi-axle steering even rear-axle steering solve this problem, propons steering technique is successfully applied, as: the technology such as circulating ball type hydraulic power steering device and servo cylinder cooperation, semi-integral type hydraulic assistance steering device and servo cylinder cooperation, all-hydraulic steering gear and servo cylinder cooperation, this technology can realize turning to of first, second and third propons; But rear-axle steering is due to the particularity of installation site, implement but more complicated, several form below general employing: one adopts import throttle compensating valve centering cylinder type rear-axle steering system, this solution technique is ripe, but to the design of steering hardware and installation requirement very high, cost is also very high, and turns to while can not realizing many propons and back axle; Another kind is the structure control rear-axle steering adopting hydraulic actuating cylinder and stock system to coordinate, and this scheme leverage is very long, design arrangement difficulty, and easily causes Steering sensitivity poor, does not also have this technology to be applied on car load at present; Semi-integral type hydraulic assistance steering device obtains general application in large-tonnage wheel crane, many bridges special purpose vehicle, many propons can be realized turn to simultaneously, increase the all-hydraulic steering gear that can control delivery rate on this basis, for the control of rear-axle steering pressure and flow, realize rear-axle steering, reach turn to flexibly, simplicity of design, the feature that easily manufactured, cost is low.But, in actual applications, the difference on effect that different structure designs brings is very large, such as: all-hydraulic steering gear is in parallel by the deflector of a lose-lose angle of departure with semi-integral type hydraulic assistance steering device, namely bearing circle connects the deflector of lose-lose angle of departure, two mouths one of angle deflector connect all-hydraulic steering gear, and another connects semi-integral type hydraulic assistance steering device, and this mode just exists hysteresis phenomenon when Vehicular turn; Its reason be semi-integral type hydraulic assistance steering device work that to press through journey be first eliminate gap, then guiding valve is just mobile, deflector mouth in angle could be opened guiding valve and control propons after driving the steering screw of semi-integral type hydraulic assistance steering device to rotate about 90 ° and start to turn to often, and all-hydraulic steering gear supplies high pressure oil to back axle immediately after deflector defeated end in angle rotates, thus there is the problem that propons and back axle can not turn to simultaneously.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of and realizes semi-monolithic formula hydraulic booster multi-axle steering system that propons and back axle turn to simultaneously and control method thereof.
The utility model solves the technical scheme that its technical matters adopts:
A kind of semi-monolithic formula hydraulic booster multi-axle steering system, comprise bearing circle, the semi-integral type hydraulic assistance steering device be connected with bearing circle, all-hydraulic steering gear, first steering pump, second steering pump, fuel tank and at least two steeraxles, first propons comprises the first steering actuation cylinder, back axle comprises the second steering actuation cylinder, described semi-integral type hydraulic assistance steering device comprises manual steering gear, and the guiding valve to be connected with manual steering gear, guiding valve respectively with the first described steering actuation cylinder, first steering pump connects, gear piston assembly is provided with in the shell of described manual steering gear, gear piston assembly comprises the input screw rod be connected with the spool of guiding valve, and by steel ball and the piston inputting the band tooth bar that screw flight is connected, described tooth bar has been connected with a joggle rocker shaft, described all-hydraulic steering gear respectively with the second described steering actuation cylinder, second steering pump connects, described piston to be threaded output screw by steel ball, the shell of described manual steering gear is fixedly connected with lower cover, the other end of the corresponding piston of described output screw is arranged on down by bearing and covers and this end of output screw is connected with described all-hydraulic steering gear.
As the improvement of technique scheme, be covered with the first location cylindrical in the shell of insertion machine tool deflector under described, between the first location cylindrical and described outer casing inner wall, be provided with the first seal ring be socketed on the first location cylindrical.
Further, the end of described lower cover is provided with the plug screw for compressing bearing, the middle part of plug screw is provided with the via hole be convenient to output screw and passed, be provided with the oil sealing be socketed on output screw between described plug screw and output screw, between described plug screw and lower cover, be provided with the second seal ring be socketed on plug screw.
Further, between described all-hydraulic steering gear and lower cover, connector is installed, the rear and front end of described connector is respectively equipped with the prelocalization cavity and rear located cavity that are connected, be covered with under described coordinate with prelocalization cavity second locate cylindrical, described all-hydraulic steering gear is provided with the positioning boss coordinated with rear located cavity.
Further, described connector is connected with all-hydraulic steering gear by socket bolt, and connector periphery is provided with mounting flange, and mounting flange is connected with lower cover by outer-hexagonal bolt.
Further, Hui Zhong mechanism is housed between described guiding valve and manual steering gear, described Hui Zhong mechanism comprises time middle connector connecting guiding valve and manual steering gear, and is located at time flange on input screw rod, is respectively equipped with the disc spring being installed in go back to flange both sides in described guiding valve and time middle connector.
Further, the front end of described guiding valve is provided with and the input shaft assembly inputting screw rod and be connected, and is connected with angle deflector between described input shaft assembly and bearing circle.
The beneficial effects of the utility model are: the utility model makes improvements on existing semi-integral type hydraulic assistance steering device basis, by increasing output screw, output screw is connected with piston thread by steel ball, when turning to, semi-integral type hydraulic assistance steering device coordinates transferring power to all-hydraulic steering gear by piston and output screw, can ensure that propons and back axle turn to simultaneously, avoid in conventional art, inputting screw rod and drive when piston rest all-hydraulic steering gear rotate and cause the problem that rear-axle steering turns to prior to propons.The number of turns of the oil mass and bearing circle of simultaneously exporting to the first steering actuation cylinder by all-hydraulic steering gear due to the second steering pump is directly proportional, and can be ensured the correct relation of rear-axle steering angle and front axle steering angle by the all-hydraulic steering gear choosing suitable types.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that the semi-integral type hydraulic assistance steering device in the utility model coordinates with all-hydraulic steering gear;
Fig. 3 is A place enlarged drawing in Fig. 2.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, a kind of semi-monolithic formula hydraulic booster multi-axle steering system in the utility model embodiment, comprise bearing circle 1, the semi-integral type hydraulic assistance steering device 3 be connected with bearing circle 1, all-hydraulic steering gear 4, first steering pump 51, second steering pump 52, fuel tank 53 and at least two steeraxles, described first steering pump 51, second steering pump 52 is all connected with fuel tank 53, described fuel tank 53 can arrange two, connects the first steering pump 51, second steering pump 52 respectively.First propons 6 comprises the first steering actuation cylinder 61, back axle 7 comprises the second steering actuation cylinder 71, described semi-integral type hydraulic assistance steering device 3 comprises manual steering gear 32, and the guiding valve 31 to be connected with manual steering gear 32, guiding valve 31 respectively with the first described steering actuation cylinder 61, first steering pump 51 connects, gear piston assembly is provided with in the shell of described manual steering gear 32, gear piston assembly comprises the input screw rod 321 be connected with the spool of guiding valve 31, and by steel ball and the piston 322 inputting the band tooth bar 3221 that screw rod 321 is threaded, the spool of described guiding valve 31 is fixedly sleeved outside input screw rod 321, described tooth bar 3221 has been connected with a joggle rocker shaft 323, described rocker shaft 323 is connected with the steering gear of the first propons 6, described all-hydraulic steering gear 4 respectively with the second described steering actuation cylinder 71, second steering pump 52 connects, described piston 322 to be threaded output screw 324 by steel ball, the shell of described manual steering gear 32 is fixedly connected with lower cover 326, the other end of the corresponding piston of described output screw 324 322 to be arranged on lower cover 326 by bearing 325 and this end of output screw 324 is connected with described all-hydraulic steering gear 4, conveniently install, described bearing 325 is split type bearing.Preferably, the front end of described guiding valve 31 is provided with and the input shaft assembly 33 inputting screw rod 321 and be connected, described input screw rod 321 is connected with the input shaft 331 of input shaft assembly 33 by cross axle sleeve 34, angle deflector 2 is connected with between described input shaft assembly 33 and bearing circle 1, bearing circle 1 changes driving angle by angle deflector 2, facilitates the space of semi-integral type hydraulic assistance steering device 3 and all-hydraulic steering gear 4 to arrange.
In order to location and installation lower cover 326, and prevent the lubricating oil in manual steering gear 32 from revealing from the connection location of lower cover 326 and manual steering gear 32 shell, described lower cover 326 is provided with the first location cylindrical 3261 in the shell of insertion manual steering gear 32, be provided with the first seal ring 91 be socketed on the first location cylindrical 3261 between first location cylindrical 3261 and described outer casing inner wall, described first location cylindrical 3261 is provided with the groove of socket seal ring.Conveniently output screw 324 is installed, the end of described lower cover 326 is provided with the plug screw 327 for compressing bearing 325, the middle part of plug screw 327 is provided with the via hole be convenient to output screw 324 and passed, be provided with the oil sealing 92 be socketed on output screw 324 between described plug screw 327 and output screw 324, between described plug screw 327 and lower cover 326, be provided with the second seal ring 93 be socketed on plug screw 327.Described second seal ring 93, oil sealing 92 prevent the gap leakage of lubricating oil from the gap between lower cover 326 and plug screw 327, between output screw 324 and plug screw 327 in manual steering gear 32 respectively.
In the present embodiment, between described all-hydraulic steering gear 4 and lower cover 326, connector 8 is installed, the rear and front end of described connector 8 is respectively equipped with the prelocalization cavity 81 and rear located cavity 82 that are connected, described lower cover 326 be provided with coordinate with prelocalization cavity 81 second locate cylindrical 3262, described all-hydraulic steering gear 4 is provided with the positioning boss 41 coordinated with rear located cavity 82.The connecting portion that described connector 8 avoids between output screw 324 and all-hydraulic steering gear 4 exposes; protection mechanism; and prelocalization cavity 81 and second locates the coordinating of cylindrical 3262, rear located cavity 82 coordinates with positioning boss 41; facilitate lower cover 326 and all-hydraulic steering gear 4 location and installation, improve installation effectiveness.Preferably, described output screw 324 and all-hydraulic steering gear 4 are by spline joint, and plug-in mounting is convenient, and centering is good.More step up to make structure to knit, avoid installing simultaneously and interfere, described connector 8 is connected with all-hydraulic steering gear 4 by socket bolt, and connector 8 periphery is provided with mounting flange 83, and mounting flange 83 is connected with lower cover 326 by outer-hexagonal bolt.When said structure is installed, the positioning boss 41 of all-hydraulic steering gear 4 is inserted in the rear located cavity 82 of connector 8, then with socket bolt, both are connected and fixed, and then second of lower cover 326 the location cylindrical 3262 is inserted in the prelocalization cavity 81 of connector 8, with outer-hexagonal bolt, both are fixed, can installation be completed.
Further, between described guiding valve 31 and manual steering gear 32, Hui Zhong mechanism is housed, described Hui Zhong mechanism comprises time middle connector 301 connecting guiding valve 31 and manual steering gear 32, and time flange 302 be located on input screw rod 321, be respectively equipped with the disc spring 303 being installed in go back to flange 302 both sides in described guiding valve 31 and time middle connector 301.This structure adopts disc spring 303 as original paper in returning, and makes the utility model return middle performance good, turns to more stable.
When the utility model turns to, input screw rod 321 is driven to rotate by bearing circle 1 by angle deflector 2, due to the pavement friction resistance of wheel flutter, piston 322 moves and is obstructed and maintains static, input screw rod 321 opposing pistons 322 moves axially, compression disc spring 303, and then the spool of band movable pulley 31 moves, guiding valve 31 is opened, high pressure oil is assigned to the first steering actuation cylinder 61 by guiding valve 31 by the first steering pump 51, promote the first propons 6 to start to turn to, now, the moving resistance of piston 322 reduces, piston 322 moves under the driving of input screw rod 321, and drive rocker shaft 323 to rotate promotion first propons 6 to turn to, output screw 324 is driven to rotate while piston 322 movement, output screw 324 drives the valve core rotation of all-hydraulic steering gear 4, second steering pump 52 exports certainty ratio hydraulic oil by all-hydraulic steering gear 4 rotates to the second steering actuation cylinder 71 to promote back axle 7.This structure is connected with piston 322 due to the output screw 324 be connected with all-hydraulic steering gear 4, output screw 324 disconnects with input screw rod 321, if and only if could drive output screw 324 to rotate when piston 322 moves, thus can ensure that propons and back axle 7 turn to simultaneously, avoid in conventional art, inputting screw rod 321 and drive when piston 322 is static all-hydraulic steering gear 4 rotate and cause back axle 7 to turn to the problem turned to prior to propons.
The utility model additionally provides a kind of control method of semi-monolithic formula hydraulic booster multi-axle steering system, comprise above-mentioned semi-monolithic formula hydraulic booster multi-axle steering system, bearing circle 1 drives the first propons 6 to rotate by described semi-integral type hydraulic assistance steering device 3, and semi-integral type hydraulic assistance steering device 3 drives all-hydraulic steering gear 4 to drive back axle 7 to rotate by described output screw 324.The control method of semi-monolithic formula hydraulic booster multi-axle steering system of the present utility model relies on mechanical transmission to complete, in contrast to electric-control method, do not affect by external environment condition such as temperature etc., and there will not be the problems such as electronics package is aging, applied widely, reliability is high.Simultaneously semi-integral type hydraulic assistance steering device 3 coordinates transferring power to all-hydraulic steering gear 4 by piston 322 and output screw 324, can ensure that propons and back axle 7 turn to simultaneously, and the oil mass exporting to the first steering actuation cylinder 61 by all-hydraulic steering gear 4 due to the second steering pump 52 is directly proportional to the number of turns of bearing circle 1, can be ensured the correct relation of back axle 7 steering angle and front axle steering angle by the all-hydraulic steering gear 4 choosing suitable types.
Certainly, the utility model, except above-mentioned embodiment, can also have other structural distortion, and these equivalent technical solutions also should within its protection domain.
Claims (7)
1. a semi-monolithic formula hydraulic booster multi-axle steering system, comprise bearing circle (1), the semi-integral type hydraulic assistance steering device (3) be connected with bearing circle (1), all-hydraulic steering gear (4), first steering pump (51), second steering pump (52), fuel tank (53) and at least two steeraxles, first propons (6) comprises the first steering actuation cylinder (61), back axle (7) comprises the second steering actuation cylinder (71), described semi-integral type hydraulic assistance steering device (3) comprises manual steering gear (32), and the guiding valve (31) to be connected with manual steering gear (32), guiding valve (31) respectively with described the first steering actuation cylinder (61), first steering pump (51) connects, gear piston assembly is provided with in the shell of described manual steering gear (32), gear piston assembly comprises the input screw rod (321) be connected with the spool of guiding valve (31), and by steel ball and the piston (322) inputting the band tooth bar (3221) that screw rod (321) is threaded, described tooth bar (3221) has been connected with a joggle rocker shaft (323), described all-hydraulic steering gear (4) respectively with described the second steering actuation cylinder (71), second steering pump (52) connects, it is characterized in that: described piston (322) to be threaded output screw (324) by steel ball, the shell of described manual steering gear (32) is fixedly connected with lower cover (326), the other end of described output screw (324) corresponding piston (322) is arranged on upper and this end of output screw (324) of lower cover (326) by bearing (325) and is connected with described all-hydraulic steering gear (4).
2. a kind of semi-monolithic formula hydraulic booster multi-axle steering system according to claim 1, it is characterized in that: described lower cover (326) is provided with the first location cylindrical (3261) in the shell of insertion manual steering gear (32), is provided with the first seal ring (91) be socketed on the first location cylindrical (3261) between the first location cylindrical (3261) and described outer casing inner wall.
3. a kind of semi-monolithic formula hydraulic booster multi-axle steering system according to claim 1, it is characterized in that: the end of described lower cover (326) is provided with the plug screw (327) for compressing bearing (325), the middle part of plug screw (327) is provided with the via hole be convenient to output screw (324) and passed, the oil sealing (92) be socketed on output screw (324) is provided with between described plug screw (327) and output screw (324), the second seal ring (93) be socketed on plug screw (327) is provided with between described plug screw (327) and lower cover (326).
4. a kind of semi-monolithic formula hydraulic booster multi-axle steering system according to claim 1, it is characterized in that: connector (8) is installed between described all-hydraulic steering gear (4) and lower cover (326), the rear and front end of described connector (8) is respectively equipped with the prelocalization cavity (81) and rear located cavity (82) that are connected, described lower cover (326) be provided with coordinate with prelocalization cavity (81) second locate cylindrical (3262), described all-hydraulic steering gear (4) is provided with the positioning boss (41) coordinated with rear located cavity (82).
5. a kind of semi-monolithic formula hydraulic booster multi-axle steering system according to claim 4, it is characterized in that: described connector (8) is connected with all-hydraulic steering gear (4) by socket bolt, connector (8) periphery is provided with mounting flange (83), and mounting flange (83) is connected with lower cover (326) by outer-hexagonal bolt.
6. a kind of semi-monolithic formula hydraulic booster multi-axle steering system according to claim 1, it is characterized in that: between described guiding valve (31) and manual steering gear (32), Hui Zhong mechanism is housed, described Hui Zhong mechanism comprises time middle connector (301) connecting guiding valve (31) and manual steering gear (32), and time flange (302) be located in input screw rod (321), be respectively equipped with the disc spring (303) being installed in go back to flange (302) both sides in described guiding valve (31) and time middle connector (301).
7. a kind of semi-monolithic formula hydraulic booster multi-axle steering system according to claim 1, it is characterized in that: the front end of described guiding valve (31) is provided with and the input shaft assembly (33) inputting screw rod (321) and be connected, and is connected with angle deflector (2) between described input shaft assembly (33) and bearing circle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783783.0U CN204250156U (en) | 2014-11-28 | 2014-11-28 | A kind of semi-monolithic formula hydraulic booster multi-axle steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783783.0U CN204250156U (en) | 2014-11-28 | 2014-11-28 | A kind of semi-monolithic formula hydraulic booster multi-axle steering system |
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| Publication Number | Publication Date |
|---|---|
| CN204250156U true CN204250156U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420783783.0U Withdrawn - After Issue CN204250156U (en) | 2014-11-28 | 2014-11-28 | A kind of semi-monolithic formula hydraulic booster multi-axle steering system |
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| CN (1) | CN204250156U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709344A (en) * | 2014-11-28 | 2015-06-17 | 江门市兴江转向器有限公司 | Semi-integral type hydraulic power-assisted multi-axle steering system and control method thereof |
| CN109484469A (en) * | 2019-01-02 | 2019-03-19 | 徐工集团工程机械股份有限公司科技分公司 | Wheel steering system and engineering truck |
| CN113104095A (en) * | 2021-05-07 | 2021-07-13 | 徐州重型机械有限公司 | Double-loop integral steering gear, steering power-assisted system and crane |
-
2014
- 2014-11-28 CN CN201420783783.0U patent/CN204250156U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709344A (en) * | 2014-11-28 | 2015-06-17 | 江门市兴江转向器有限公司 | Semi-integral type hydraulic power-assisted multi-axle steering system and control method thereof |
| CN104709344B (en) * | 2014-11-28 | 2017-04-12 | 徐州重型机械有限公司 | Semi-integral type hydraulic power-assisted multi-axle steering system and control method thereof |
| CN109484469A (en) * | 2019-01-02 | 2019-03-19 | 徐工集团工程机械股份有限公司科技分公司 | Wheel steering system and engineering truck |
| CN109484469B (en) * | 2019-01-02 | 2024-04-09 | 徐工集团工程机械股份有限公司科技分公司 | Vehicle steering system and engineering vehicle |
| CN113104095A (en) * | 2021-05-07 | 2021-07-13 | 徐州重型机械有限公司 | Double-loop integral steering gear, steering power-assisted system and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Guangguang Inventor after: Zhao Jianguo Inventor after: Wang Gui Inventor after: Xiao Jianyong Inventor after: Wang Donghua Inventor after: Cheng Wei Inventor after: Li Binghong Inventor after: Li Disheng Inventor before: Wang Gui |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160513 Address after: 221000 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee after: Xuzhou Heavy Machinery Co., Ltd. Patentee after: Xingjiang Steering Gear Co., Ltd. Address before: 529050 No. 465 West Ring Road, Pengjiang District, Guangdong, Jiangmen Patentee before: Xingjiang Steering Gear Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150408 Effective date of abandoning: 20170412 |
|
| AV01 | Patent right actively abandoned |