CN202966413U - Power steering gear assembly with automatic unloading function - Google Patents
Power steering gear assembly with automatic unloading function Download PDFInfo
- Publication number
- CN202966413U CN202966413U CN 201220697989 CN201220697989U CN202966413U CN 202966413 U CN202966413 U CN 202966413U CN 201220697989 CN201220697989 CN 201220697989 CN 201220697989 U CN201220697989 U CN 201220697989U CN 202966413 U CN202966413 U CN 202966413U
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- CN
- China
- Prior art keywords
- steering gear
- power steering
- push rod
- blanking cover
- mandril
- 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
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Abstract
The utility model relates to a power steering gear assembly with an automatic unloading function and belongs to the field of automobile steering gears. The power steering gear assembly with the automatic unloading function is composed of a steering gear shell body, a steering nut, a blanking cover, a guide rod, a left mandril, a right mandril and a supporting tube, wherein the left mandril is arranged on the steering nut which is in the steering gear shell body, the right mandrill is arranged on the side of the left mandril of the steering gear body, the blanking cover is arranged between the left mandril and the right mandril, the blanking cover is connected with the steering nut in a threaded mode, the supporting rod is arranged on the blanking cover through a pressure relief valve seat, and a steel ball A and a steel ball B are arranged at two ends of the supporting tube. The power steering gear assembly with the automatic unloading function is simple and compact in structure, and resolves the problem that a pressure relief valve used on a power steering gear matched with a heavy type vehicle can not be realized on a power steering gear matched with a light type vehicle due to the fact that a circulating ball power steering gear matched with the light type vehicle is compact in structure and narrow in space. The left mandril and the right mandril of the power steering gear assembly with the automatic unloading function can automatically adjust unloading route to conduct pressure relief according to a vehicle loading demand in a power steering gear steering process.
Description
Technical field
The utility model relates to a kind of power steering gear assembly with automatic deloading function, belongs to the automobile steering device field.
Background technology
Recirculating ball power steering gear is a kind of driving device that mechanical drive combines with hydrostatic drive, has been widely used in all kinds of light, heavy motor vehicles.
The circulating ball hydraulic power steering device overwhelming majority that present domestic heavy goods vehicles is assembled disposes limiting unloading valve.The effect of limiting unloading valve is; the current wheel when being positioned at steering locking angle; release effect by limiting unloading valve; system pressure is reduced to a suitable force value; can reach saving fuel, reduce Hydraulic System Fever, alleviate the steering gear connection load, extend the purpose of steering swivel system work life, and steering swivel system be played the effect of protection.
Along with the development of auto trade, lilliput car is also more and more higher to the requirement of steering assembly performance and reliability of service.But present lilliput car normally leans on mechanical position limitation in steering procedure, when the positive stop lug boss on front-wheel and the caging bolt on steering swivel are collided, front-wheel is by rigid limit, cornering resistance is infinitely great, hydraulic system pressure is raised to the highest, Hydraulic Pump can generate heat in a large number, and the hydraulic work system performance will speed up deterioration, and steering gear connection will bear peak load simultaneously.These can reduce the work life of steering swivel system.Due to recirculating ball power steering gear supporting on Light-duty Vehicle because of its compact conformation, narrow space, on the supporting power steering of heavy goods vehicles, pressure-relief valve used can't be realized in the deflector that Light-duty Vehicle matches, so the light power deflector does not increase this structure substantially.
Summary of the invention
The purpose of this utility model is: provide a kind of simple in structure, fabrication properties is good, and is easy to adjust, makes power steering gear assembly have the power steering gear assembly with automatic deloading function of high safety performance.
The utility model is to realize by following technical solution above-mentioned purpose
A kind of power steering gear assembly with automatic deloading function, it is made of steering gear housing, steering nut, blanking cover, guide rod, left push rod, right push rod and support tube; Overlap by edge on steering nut in steering gear housing left push rod is installed, by guide rod, right push rod is installed on the steering gear housing of left push rod one side, be provided with blanking cover between left push rod and right push rod; Blanking cover is threaded with steering nut; By the release valve seat, support tube is housed on blanking cover, steel ball A and steel ball B are equipped with by spring respectively in support tube two ends, and the support tube termination of described steel ball A5 and steel ball B8 one side is respectively arranged with cutoff port.
The utility model advantage compared with prior art is:
This has the power steering gear assembly of automatic deloading function, and its left push rod, right push rod and blanking cover center all are on same linear position with the steering nut center; When steering nut is left and right when operating near end position, by left push rod or right push rod, the steel ball A on blanking cover or steel ball B are backed down, make high pressure chest and the low pressure chamber intercommunication of deflector, high pressure oil enters low pressure chamber by pressure-relief valve, reduce and continue high pressure, thereby steering swivel system is carried out release, improve traffic safety.Simultaneously, this power steering gear assembly with automatic deloading function is simple and compact for structure, processing technology and assembly method simple possible, solved recirculating ball power steering gear supporting on existing Light-duty Vehicle because of its compact conformation, narrow space, on the supporting power steering of heavy goods vehicles, pressure-relief valve used can't be realized the problem of assembling in the deflector that Light-duty Vehicle matches.
Description of drawings
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the work schematic diagram of the utility model left during to steering wheel rotation;
Work schematic diagram when Fig. 3 is the utility model right steering wheel rotation.
In figure: 1, steering nut, 2, edge cover, 3, left push rod, 4, blanking cover, 5, steel ball A, 6, spring, 7, support tube, 8, steel ball B, 9, the release valve seat, 10, right push rod, 11, guide rod, 12, cutoff port, 13, steering gear housing.
The specific embodiment
This power steering gear assembly with automatic deloading function is made of steering gear housing 13, steering nut 1, blanking cover 4, guide rod 11, left push rod 3, right push rod 10 and support tube 7.Overlap 2 by edge on steering nut 1 in steering gear housing 13 left push rod 3 is installed, by guide rod 11, right push rod 10 is installed on the steering gear housing 13 of left push rod 3 one sides, be provided with blanking cover 4 between left push rod 3 and right push rod 10.Blanking cover 4 is threaded with steering nut 1.By release valve seat 9, support tube 7 is housed on blanking cover 4, steel ball A5 and steel ball B8 are equipped with by spring 6 respectively in support tube 7 two ends, and support tube 7 terminations of steel ball A5 and steel ball B8 one side are respectively arranged with cutoff port 12.
This has the left push rod 3, right push rod 10 of the power steering gear assembly of automatic deloading function and blanking cover 4 centers and all is in same linear position with steering nut 1 center.In working process, when direction steering wheel rotation left, steering nut 1 is to left movement, steel ball B8 is pushed open by high pressure oil, steel ball A5 is backed down by left push rod 3, makes the high pressure oil in high pressure chest enter low pressure chamber by support tube 7, realizes the steering swivel system release, left push rod 3 is slided left by blanking cover 4 compressions simultaneously, until steered wheel spacing (referring to accompanying drawing 2).
In like manner, when to the right steering wheel rotation, steering nut 1 moves right, high pressure oil in the deflector high pressure chest is pushed steel ball A5 open, steel ball B8 is backed down by right push rod 10, makes the high pressure oil of high pressure chest enter low pressure chamber by support tube 7, thereby realizes steering swivel system release (referring to accompanying drawing 3).
This power steering gear assembly with automatic deloading function is simple and compact for structure, processing technology and assembly method simple possible, solved recirculating ball power steering gear supporting on existing Light-duty Vehicle because of its compact conformation, narrow space, on the supporting power steering of heavy goods vehicles, pressure-relief valve used can't be realized the problem of assembling in the deflector that Light-duty Vehicle matches.And this has the power steering gear assembly of automatic deloading function, and its left push rod 3 and right push rod 10 be at the power steering steering procedure, in can automatically adjust the off-load stroke according to the entrucking needs and carry out release.
Claims (1)
1. power steering gear assembly with automatic deloading function, it is made of steering gear housing (13), steering nut (1), blanking cover (4), guide rod (11), left push rod (3), right push rod (10) and support tube (7); Upward overlap (2) by edge is equipped with left push rod (3) to steering nut (1) in steering gear housing (13), the steering gear housing (13) of left push rod (3) one sides is upper is equipped with right push rod (10) by guide rod (11), is provided with blanking cover (4) between left push rod (3) and right push rod (10); Blanking cover (4) is threaded with steering nut (1); Blanking cover (4) is upper is equipped with support tube (7) by release valve seat (9), steel ball A(5 is equipped with by spring (6) respectively in support tube (7) two ends) and steel ball B(8), described steel ball A(5) and steel ball B(8) support tube (7) termination of a side is respectively arranged with cutoff port (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697989 CN202966413U (en) | 2012-12-17 | 2012-12-17 | Power steering gear assembly with automatic unloading function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697989 CN202966413U (en) | 2012-12-17 | 2012-12-17 | Power steering gear assembly with automatic unloading function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202966413U true CN202966413U (en) | 2013-06-05 |
Family
ID=48507526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220697989 Expired - Fee Related CN202966413U (en) | 2012-12-17 | 2012-12-17 | Power steering gear assembly with automatic unloading function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202966413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026875A (en) * | 2018-08-28 | 2018-12-18 | 豫北转向系统（新乡）有限公司 | A kind of unloading mechanism of hydraulic steering gear |
| CN111169530A (en) * | 2018-11-12 | 2020-05-19 | 浙江世宝股份有限公司 | Internal circulation structure of screw and nut assembly for commercial vehicle |
-
2012
- 2012-12-17 CN CN 201220697989 patent/CN202966413U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026875A (en) * | 2018-08-28 | 2018-12-18 | 豫北转向系统（新乡）有限公司 | A kind of unloading mechanism of hydraulic steering gear |
| CN111169530A (en) * | 2018-11-12 | 2020-05-19 | 浙江世宝股份有限公司 | Internal circulation structure of screw and nut assembly for commercial vehicle |
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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: 20130605 Termination date: 20151217 |
|
| EXPY | Termination of patent right or utility model |