CN107140015B - Double-front-axle automobile steering system - Google Patents
Double-front-axle automobile steering system Download PDFInfo
- Publication number
- CN107140015B CN107140015B CN201710362483.3A CN201710362483A CN107140015B CN 107140015 B CN107140015 B CN 107140015B CN 201710362483 A CN201710362483 A CN 201710362483A CN 107140015 B CN107140015 B CN 107140015B
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- front axle
- oil inlet
- transition
- steering gear
- oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/16—Arrangement of linkage connections
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention relates to a double-front-axle automobile steering system, which comprises a steering gear, a vertical arm, a first transition pull rod, a first transition rocker arm, a first front-axle drag link, a second transition pull rod, a power cylinder assembly, a second front-axle drag link, a first front axle and a second front axle; the vertical arm is movably connected with the front end of the first transition pull rod, and the rear end of the first transition pull rod is movably connected with the lower end of the first transition rocker arm; the front end of the first front axle drag link is movably connected with the lower end of the first transition rocker arm, and the rear end of the first front axle drag link is movably connected with the first front axle; the front end of the second transition pull rod is movably connected with the first front axle, and the rear end of the second transition pull rod is movably connected with the power cylinder assembly; the front end of the second front axle drag link is movably connected with the power cylinder assembly, and the rear end of the second front axle drag link is movably connected with the second front axle. The power cylinder assembly in the technical scheme can provide steering power and can also serve as a transition rocker arm; the power cylinder does not use a piston rod, can bear larger pressure, and therefore outputs larger steering torque, and is long in service life and good in reliability.
Description
Technical Field
The invention belongs to the technical field of automobile steering systems, and particularly relates to a double-front-axle automobile steering system.
Background
The automobile with double front axle steering refers to an automobile with two steering axles, and compared with a single front axle automobile, the automobile with double front axle steering has one more steering axle, so that more load can be borne, and the double front axle steering automobile becomes the development trend of road transport vehicles along with the development of national economy.
Fig. 1 shows a schematic diagram of a steering system of a double front axle automobile in the prior art, which includes a steering wheel 017, a steering column 018, a steering gear 01, a steering gear rocker arm 02, a first front axle transition pull rod 03, a first front axle transition arm 04, a first front axle drag rod 05, a power cylinder 06, a power cylinder bracket 07, a first front axle knuckle arm 08, a second front axle transition pull rod 010, a second front axle transition arm 015, a second front axle drag rod 016, a second front axle knuckle arm 011, a first front axle 09, a second front axle 012, a first front axle knuckle 013 and a second front axle knuckle 014.
Each pull rod is connected with each swing arm through a ball pin joint, and if the first front axle transition arm is connected with a first front axle transition pull rod and a first front axle drag link respectively to transmit motion. The turning radius of the first front axle knuckle arm is equal to that of the second front axle knuckle arm, and the hard point arrangement of the pull rod and each rocker arm ball hinge is as shown in figure 1, so that a proper steering transmission ratio is obtained, and the turning accuracy of the second front axle is ensured; the first front axle knuckle arm can drive the first front axle knuckle to steer, and can transmit motion and force to the second front axle transition arm to play a role in transition and linkage.
As shown in fig. 2, the steering system further includes a hydraulic power-assisted pipeline system, which includes an oil storage tank 019, an oil storage tank outlet pipe 020, an oil pump 021, a steering gear inlet pipe 022, a steering gear outlet pipe 023, a power-assisted cylinder left steering inlet pipe 024, and a power-assisted cylinder right steering inlet pipe 025. The oil pump supplies the steering gear with the rotating oil in the oil tank and provides steering assist.
In a steering system in the prior art, no matter how the power cylinder is arranged, the existing structure is adopted, and a large installation space and a large movement space are required to be reserved for the power cylinder, so that the arrangement on the whole vehicle is difficult.
The piston rod of the power cylinder is isolated from the outside by abutting against the dustproof cover, when the dustproof cover fails, impurities easily enter the power cylinder to cause sealing failure, leakage outside the power cylinder is increased, and efficiency is reduced.
An additional transition rocker arm is required to convert the linear motion of the power cylinder into rotation, so that more parts are required and the structure is complex.
The piston rod can not bear larger pressure, and under the long-term heavy load working condition, the piston rod is easy to bend and has short service life.
Disclosure of Invention
The invention aims to provide a double-front-axle automobile steering system, which aims to solve the problems that a larger space needs to be reserved for a power cylinder and a piston rod is easy to bend.
The invention is realized by the following technical scheme:
a double-front-axle automobile steering system comprises a steering gear, a vertical arm, a first transition pull rod, a first transition rocker arm, a first front-axle drag rod, a second transition pull rod, a power cylinder assembly, a second front-axle drag rod, a first front axle and a second front axle;
the steering gear is arranged on a frame longitudinal beam through a steering gear bracket, the upper end of the vertical arm is connected with the steering gear, the upper end of the first transition rocker arm is movably connected with the frame longitudinal beam, the lower end of the vertical arm is movably connected with the front end of the first transition pull rod, and the rear end of the first transition pull rod is movably connected with the lower end of the first transition rocker arm;
the front end of the first front axle drag link is movably connected with the lower end of the first transition rocker arm, and the rear end of the first front axle drag link is movably connected with the first front axle;
the front end of the second transition pull rod is movably connected with the first front axle, and the rear end of the second transition pull rod is movably connected with the power cylinder assembly;
the front end of the second front axle drag link is movably connected with the power cylinder assembly, and the rear end of the second front axle drag link is movably connected with the second front axle.
The power cylinder assembly is arranged on the frame longitudinal beam between the first front axle and the second front axle;
the power cylinder assembly comprises a power cylinder and a rocker arm meshed with the power cylinder.
The power cylinder comprises a cylinder body and a piston, an opening is formed in the position, opposite to the rocker arm, of the cylinder body, the piston is movably arranged in the cylinder body, a plurality of tooth-shaped grooves are formed in the axial side wall of the piston, and part of the tooth-shaped grooves correspond to the opening;
the piston divides the cylinder body into a left-turning boosting cylinder chamber and a right-turning boosting cylinder chamber;
the cylinder body is provided with a left-turning oil inlet and a right-turning oil inlet, the left-turning oil inlet is communicated with the left-turning power-assisted cylinder chamber, and the right-turning oil inlet is communicated with the right-turning power-assisted cylinder chamber.
The rocker arm comprises a rocker arm body and a tooth-shaped part arranged at the upper end of the rocker arm body, wherein an outer tooth pattern is arranged on the tooth-shaped part, and the outer tooth pattern is meshed with the tooth-shaped groove.
The rear end of the second transition pull rod is movably connected with the lower end of the rocker arm body; the front end of the second front axle drag link is movably connected with the position close to the lower end of the rocker arm body.
And the turning radius of the rear end of the second transition pull rod is larger than that of the front end of the second front axle drag rod.
The hydraulic power-assisted pipeline system comprises an oil storage tank, an oil storage pipe outlet pipe, an oil pump, a steering gear oil inlet pipe, a steering gear oil outlet pipe, a power-assisted cylinder left-turning oil inlet pipe and a power-assisted cylinder right-turning oil inlet pipe;
one end of the oil outlet pipe of the oil storage pipe is connected with the oil storage tank, and the other end of the oil outlet pipe of the oil storage pipe is connected with an oil inlet of the oil pump; one end of the oil inlet pipe of the steering gear is connected with an oil outlet of the oil pump, and the other end of the oil inlet pipe of the steering gear is connected with an oil inlet of the steering gear;
one end of the steering gear oil outlet pipe is connected with the oil outlet of the steering gear, and the other end of the steering gear oil outlet pipe is connected with the oil tank;
one end of the left rotation oil inlet pipe of the power cylinder is connected with the left rotation oil inlet, and the other end of the left rotation oil inlet pipe of the power cylinder is connected with the steering gear; one end of the right-turn oil inlet pipe of the power cylinder is connected with the right-turn oil inlet, and the other end of the right-turn oil inlet pipe of the power cylinder is connected with the steering gear.
The invention has the beneficial effects that:
1) the power cylinder assembly in the technical scheme can provide steering power and can also serve as a transition rocker arm.
2) The booster cylinder in the technical scheme has small leakage outside and high efficiency.
3) According to the technical scheme, the power cylinder does not use a piston rod, can bear larger pressure, and therefore outputs larger steering torque, and is long in service life and good in reliability.
4) The hydraulic parts are concentrated inside the power cylinder, and the power cylinder cannot be influenced by external impurities.
5) Compact structure, simple to operate, after having cancelled first front axle transition arm, steering system's cost reduction.
Drawings
FIG. 1 is a schematic view of a prior art dual front axle automotive steering system;
FIG. 2 is a schematic view of a steering system of a prior art dual front axle vehicle;
FIG. 3 is a schematic view of a steering system and principle of a double front axle vehicle according to the present invention;
FIG. 4 is a view of the main structure of the steering system of the double front axle vehicle of the present invention;
FIG. 5 is a schematic diagram of a cylinder assembly according to the present invention.
Description of the reference numerals
01 steering gear, 02 steering gear rocker arm, 03 first front axle transition drawbar, 04 first front axle transition arm, 05 first front axle drag link, 06 cylinder, 07 cylinder support, 08 first front axle knuckle arm, 09 first front axle, 010 second front axle transition drawbar, 011 second front axle knuckle arm, 012 second front axle, 013 first front axle knuckle, 014 second front axle knuckle, 015 second transition arm, 016 second front axle drag link, 017 steering wheel, 018 steering column, 019 storage tank, 020 storage tank outlet tube, 021 oil pump, 022 steering gear inlet tube, 023 steering gear outlet tube, 024 cylinder left steering inlet tube, 025 cylinder right steering inlet tube, 1 steering wheel, 2 steering column, 3 steering gear, 4 trailing arms, 5 first transition drawbar, 6 first front axle transition drawbar, 7 cylinder assembly, 8 first transition rocker arm, 9 first front axle transition drawbar, 10 second front axle transition drawbar, 11 a second transition pull rod, 12 a second front axle drag link, 13 an oil storage tank, 14 an oil storage tank oil outlet pipe, 15 an oil pump, 16 a steering gear oil inlet pipe, 17 a steering gear oil outlet pipe, 18 a power cylinder left-turning oil inlet pipe, 19 a power cylinder right-turning oil inlet pipe, 71 a cylinder body, 72 a piston, 73 a left-turning oil inlet, 74 a right-turning oil inlet, 75 a rocker arm body, 76 a tooth-shaped part, 77 a tooth-shaped groove, 78 openings and 79 external tooth patterns.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
The application provides a two front axle car a steering system, as shown in fig. 3 and fig. 4, the upper end and the steering wheel 1 of steering column 2 are connected, and the lower extreme is connected with steering gear 3, and steering gear 3 passes through the steering gear support to be fixed in on the frame, through rotating steering wheel 1, drives steering column 2 and rotates, and steering column 2 drives the action of steering gear 3 to the realization is to the left turn or is rotated right.
The output shaft of steering gear 3 and the upper end fixed connection of hanging down arm 4, through the rotation of steering gear output shaft, drive hanging down arm 4 and do the fore-and-aft swing, in this application, the front and back is with the locomotive direction of vehicle as the place ahead, and the direction of rear of a vehicle is the rear.
The front end of the first transition pull rod 5 is movably connected with the lower end of the vertical arm 4, the rear end of the first transition pull rod 5 is movably connected with the lower end of the first transition rocker arm 8, the upper end of the first transition rocker arm 8 is movably arranged on the frame longitudinal beam, and therefore the first transition pull rod is driven to synchronously swing back and forth along with the front and back swing of the vertical arm, so that the first front axle drag rod 6 is driven to rotate forwards or backwards, and the first front axle drag rod 6 drives the left turn or the right turn of the first front axle 9 through the first front axle drag rod 6.
The front end of the first front axle drag link 6 is movably connected with the lower end of the first transition rocker arm 8, and the rear end of the first front axle drag link 6 is movably connected with the first front axle 9.
In the present application, the cylinder assembly 7 is disposed on the frame rail between the first front axle 9 and the second front axle 10, and compared with the prior art, the cylinder assembly provides the steering assistance to the first front axle in a pushing manner and the steering assistance to the second front axle in a pulling manner, so that the cylinder assembly of the present application can provide the steering assistance to the first front axle and the second front axle simultaneously.
The front end of a second transition pull rod 11 is movably connected with a first front axle 9, the rear end of the second transition pull rod 11 is movably connected with a power cylinder assembly 7, the front end of a second front axle drag rod 12 is movably connected with the power cylinder assembly, and the rear end of the second front axle drag rod is movably connected with a second front axle 10.
As shown in fig. 5, the cylinder assembly 7 includes a cylinder and a rocker, the cylinder is engaged with the rocker in a tooth form, in this application, the cylinder includes a cylinder body 71 and a piston 72, in this application, the cylinder body is a structure with two closed ends, an opening 78 is provided at a position of the cylinder body opposite to the rocker, the piston is movably disposed in the cylinder body, a plurality of tooth-shaped grooves 77 are provided along an axial side wall of the piston, and a part of the tooth-shaped grooves 77 correspond to the opening 78; the piston 72 is movable back and forth along the axis of the cylinder within the cylinder 71.
The piston 72 divides the cylinder block into a left-turn assist cylinder chamber and a right-turn assist cylinder chamber.
A left-turn oil inlet 73 and a right-turn oil inlet 74 are provided in the cylinder block, the left-turn oil inlet communicating with the left-turn cylinder chamber, and the right-turn oil inlet communicating with the right-turn cylinder chamber. When the rotating oil is pressed into the left-turning cylinder chamber through the left-turning oil inlet, the piston moves forward, and when the rotating oil is pressed into the right-turning cylinder chamber through the right-turning oil inlet, the piston moves backward, so that the tooth-shaped groove 77 on the side wall of the piston moves forward and backward relative to the opening through the forward and backward movement of the piston.
The rocker arm comprises a rocker arm body 75 and a tooth-shaped part 76 arranged at the upper end of the rocker arm body, wherein an external tooth pattern 79 is arranged on the tooth-shaped part 76, the external tooth pattern 79 is meshed with a tooth-shaped groove 77, when the tooth-shaped groove on the piston moves, the tooth-shaped part meshed with the tooth-shaped groove through teeth is driven to rotate, and then the rocker arm body is driven to swing back and forth, and the back and forth swing of the rocker arm body is consistent with the back and forth swing action of the vertical arm.
In the technical scheme, the power cylinder adopts a structure of a gear (namely a tooth-shaped part) and a rack (namely a tooth-shaped groove on a piston), a piston rod is omitted, and the power cylinder outputs steering power in a torque mode.
The front end of the first transition pull rod 5 is movably connected with the vertical arm 4, the connection point is positioned at the lower end of the vertical arm, and the rear end of the first transition pull rod is movably connected with the lower end of the first transition rocker arm; the front end of the first front axle drag link is movably connected with the lower end of the first transition rocker arm, and the rear end of the first front axle drag link is movably connected with the first front axle. Thus, when the vertical arm swings back and forth, the first front axle drag link is driven to swing back and forth; therefore, the front-back movement of the first front axle drag link drives the first front axle to rotate left or right, and the power assistance is provided for the steering of the first front axle.
The front end and the rocking arm body swing joint of second front axle drag link, the rear end and the second front axle swing joint of second front axle drag link when turning to, through the swing of rocking arm body, realize providing the helping hand to turning to of second front axle simultaneously.
In the application, the connecting point from the upper end of the tooth-shaped part to the rear end of the second transition pull rod and the lower end of the rocker arm body is the turning radius of the second transition pull rod; the turning radius from the upper end of the tooth-shaped part to the connecting point of the second front axle drag link and the rocker arm body is the front end of the second front axle drag link.
The turning radius of the rear end of the second transition pull rod is larger than that of the front end of the second front axle drag rod.
As shown in fig. 5, the steering gear of the present technical solution further includes a hydraulic power-assisted pipeline system, and the hydraulic power-assisted pipeline system includes an oil storage tank 13, an oil storage pipe outlet pipe 14, an oil pump 15, a steering gear oil inlet pipe 16, a steering gear oil outlet pipe 17, a power-assisted cylinder left-turning oil inlet pipe 18, and a power-assisted cylinder right-turning oil inlet pipe 19.
One end of the oil outlet pipe of the oil storage pipe is connected with the oil storage tank, and the other end of the oil outlet pipe of the oil storage pipe is connected with an oil inlet of the oil pump; one end of the oil inlet pipe of the steering gear is connected with an oil outlet of the oil pump, and the other end of the oil inlet pipe of the steering gear is connected with an oil inlet of the steering gear.
One end of the steering gear oil outlet pipe is connected with an oil outlet of the steering gear, and the other end of the steering gear oil outlet pipe is connected with the oil tank.
One end of a left-turning oil inlet pipe of the power cylinder is connected with a left-turning oil inlet, and the other end of the left-turning oil inlet pipe of the power cylinder is connected with a steering gear; one end of a right-turn oil inlet pipe of the power cylinder is connected with a right-turn oil inlet, and the other end of the right-turn oil inlet pipe of the power cylinder is connected with a steering gear.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a two front axle car a steering system which characterized in that: the steering gear comprises a steering gear, a vertical arm, a first transition pull rod, a first transition rocker arm, a first front axle drag link, a second transition pull rod, a power cylinder assembly, a second front axle drag link, a first front axle and a second front axle;
the steering gear is arranged on a frame longitudinal beam through a steering gear bracket, the upper end of the vertical arm is connected with the steering gear, the upper end of the first transition rocker arm is movably connected with the frame longitudinal beam, the lower end of the vertical arm is movably connected with the front end of the first transition pull rod, and the rear end of the first transition pull rod is movably connected with the lower end of the first transition rocker arm;
the front end of the first front axle drag link is movably connected with the lower end of the first transition rocker arm, and the rear end of the first front axle drag link is movably connected with the first front axle;
the front end of the second transition pull rod is movably connected with the first front axle, and the rear end of the second transition pull rod is movably connected with the power cylinder assembly;
the power cylinder assembly comprises a power cylinder and a rocker arm meshed with the power cylinder;
the rocker arm comprises a rocker arm body and a tooth-shaped part arranged at the upper end of the rocker arm body, and external tooth marks are arranged on the tooth-shaped part;
the front end of the second front axle drag link is movably connected with the power cylinder assembly, and the rear end of the second front axle drag link is movably connected with the second front axle.
2. The double front axle automobile steering system according to claim 1, characterized in that: the power cylinder assembly is arranged on the frame longitudinal beam between the first front axle and the second front axle.
3. The double front axle automobile steering system according to claim 2, characterized in that: the power cylinder comprises a cylinder body and a piston, an opening is formed in the position, opposite to the rocker arm, of the cylinder body, the piston is movably arranged in the cylinder body, a plurality of tooth-shaped grooves are formed in the axial side wall of the piston, and part of the tooth-shaped grooves correspond to the opening;
the piston divides the cylinder body into a left-turning boosting cylinder chamber and a right-turning boosting cylinder chamber;
the cylinder body is provided with a left-turning oil inlet and a right-turning oil inlet, the left-turning oil inlet is communicated with the left-turning power-assisted cylinder chamber, and the right-turning oil inlet is communicated with the right-turning power-assisted cylinder chamber.
4. The double front axle automotive steering system according to claim 3, characterized in that: the outer insection is meshed with the tooth-shaped groove.
5. The double front axle automobile steering system according to claim 4, wherein: the rear end of the second transition pull rod is movably connected with the lower end of the rocker arm body; the front end of the second front axle drag link is movably connected with the position close to the lower end of the rocker arm body.
6. The double front axle automobile steering system according to claim 5, wherein: and the turning radius of the rear end of the second transition pull rod is larger than that of the front end of the second front axle drag rod.
7. The double front axle automotive steering system according to claim 3, characterized in that: the hydraulic power-assisted pipeline system comprises an oil storage tank, an oil storage pipe outlet pipe, an oil pump, a steering gear oil inlet pipe, a steering gear oil outlet pipe, a power-assisted cylinder left-turning oil inlet pipe and a power-assisted cylinder right-turning oil inlet pipe;
one end of the oil outlet pipe of the oil storage pipe is connected with the oil storage tank, and the other end of the oil outlet pipe of the oil storage pipe is connected with an oil inlet of the oil pump; one end of the oil inlet pipe of the steering gear is connected with an oil outlet of the oil pump, and the other end of the oil inlet pipe of the steering gear is connected with an oil inlet of the steering gear;
one end of the steering gear oil outlet pipe is connected with the oil outlet of the steering gear, and the other end of the steering gear oil outlet pipe is connected with the oil tank;
one end of the left rotation oil inlet pipe of the power cylinder is connected with the left rotation oil inlet, and the other end of the left rotation oil inlet pipe of the power cylinder is connected with the steering gear; one end of the right-turn oil inlet pipe of the power cylinder is connected with the right-turn oil inlet, and the other end of the right-turn oil inlet pipe of the power cylinder is connected with the steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362483.3A CN107140015B (en) | 2017-05-22 | 2017-05-22 | Double-front-axle automobile steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362483.3A CN107140015B (en) | 2017-05-22 | 2017-05-22 | Double-front-axle automobile steering system |
Publications (2)
| Publication Number | Publication Date |
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| CN107140015A CN107140015A (en) | 2017-09-08 |
| CN107140015B true CN107140015B (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710362483.3A Active CN107140015B (en) | 2017-05-22 | 2017-05-22 | Double-front-axle automobile steering system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251556A (en) * | 1997-04-26 | 2000-04-26 | 腓特烈斯港齿轮工厂股份公司 | Power steering device with hydraulic power assisting |
| CN2794969Y (en) * | 2004-10-21 | 2006-07-12 | 邵新兴 | Double front shaft power steering device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL8000147A (en) * | 1979-01-26 | 1980-07-29 | Orenstein & Koppel Ag | STEERING WITH STEERING ARM. |
| CN201176177Y (en) * | 2007-12-28 | 2009-01-07 | 安徽江淮汽车股份有限公司 | Steering gear for truck |
| CN202243645U (en) * | 2011-09-19 | 2012-05-30 | 安徽柳工起重机有限公司 | Car crane double-front-axle steering mechanism |
| WO2013058752A1 (en) * | 2011-10-20 | 2013-04-25 | R.H. Sheppard Co., Inc. | Back driving master steering gear and steering system implementing the steering gear |
| CN102862604B (en) * | 2012-09-18 | 2015-08-05 | 重庆迪马工业有限责任公司 | Double-front axle ladder vehicle all hydraulic pressure steering-gear |
| BR112016008551B1 (en) * | 2013-10-17 | 2021-08-31 | Volvo Do Brasil Veículos Ltda | STEERING SYSTEM FOR A VEHICLE |
| CN104228931A (en) * | 2014-09-06 | 2014-12-24 | 中国第一汽车股份有限公司 | Following steering gear assembly |
| CN106080762B (en) * | 2016-08-18 | 2018-03-20 | 安徽江淮汽车集团股份有限公司 | A kind of double-front axle automobile steering system |
| CN106080768B (en) * | 2016-08-18 | 2018-07-10 | 安徽江淮汽车集团股份有限公司 | A kind of double-front axle automobile steering system |
-
2017
- 2017-05-22 CN CN201710362483.3A patent/CN107140015B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251556A (en) * | 1997-04-26 | 2000-04-26 | 腓特烈斯港齿轮工厂股份公司 | Power steering device with hydraulic power assisting |
| CN2794969Y (en) * | 2004-10-21 | 2006-07-12 | 邵新兴 | Double front shaft power steering device |
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| CN107140015A (en) | 2017-09-08 |
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