CN107187497B - Double-front-axle automobile steering system - Google Patents
Double-front-axle automobile steering system Download PDFInfo
- Publication number
- CN107187497B CN107187497B CN201710362318.8A CN201710362318A CN107187497B CN 107187497 B CN107187497 B CN 107187497B CN 201710362318 A CN201710362318 A CN 201710362318A CN 107187497 B CN107187497 B CN 107187497B
- Authority
- CN
- China
- Prior art keywords
- front axle
- steering gear
- oil
- oil inlet
- cylinder
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
- B62D5/10—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
- B62D5/12—Piston and cylinder
Landscapes
- 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 front-axle drag link, a transition drag link, a power cylinder assembly, a second front-axle drag link, a first front axle and a second front axle, wherein the vertical arm is arranged on the front axle; the steering gear is arranged on the frame longitudinal beam through the steering gear bracket, the upper end of the vertical arm is connected with the steering gear, and the lower end of the vertical arm is movably connected with the front end of the first front axle drag link; the rear end of the first front axle drag link is movably connected with a first front axle; the front end of the transition pull rod is movably connected with the vertical arm, and the rear end of the 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 steering power is increased, and the steering is more convenient; the power cylinder assembly in the technical scheme can provide steering power and can also serve as a transition rocker arm.
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 013, a steering column 014, a steering gear 01, a steering gear rocker arm 02, a first front axle drag link 03, a transition drag link 04, a first front axle knuckle arm 05, a second front axle drag link 06, a second front axle knuckle arm 07, a first front axle 08, a second front axle 09, a first front axle knuckle 010, a second front axle knuckle 011 and a transition rocker arm assembly 012.
As shown in FIG. 2, the steering system further comprises a hydraulic power-assisted piping system, which comprises an oil storage tank 015, an oil storage tank outlet pipe 016, an oil pump 017, a steering gear oil inlet pipe 018 and a steering gear oil outlet pipe 019. 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, only a steering gear provides steering power for two front axles, the steering power is insufficient, and the steering is heavy; and the steering cylinder cannot be arranged due to the limitation of spatial arrangement.
Disclosure of Invention
The invention aims to provide a double-front-axle automobile steering system to solve the problems of insufficient steering power assistance, heavy steering and incapability of arranging a steering power cylinder.
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 front-axle drag link, a transition drag link, a power cylinder assembly, a second front-axle drag link, a first front axle and a second front axle;
the steering gear is mounted on a frame longitudinal beam through a steering gear bracket, the upper end of the vertical arm is connected with the steering gear, and the lower end of the vertical arm is movably connected with the front end of the first front axle drag link;
the rear end of the first front axle drag link is movably connected with the first front axle;
the front end of the transition pull rod is movably connected with the vertical arm, and the rear end of the 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 steering gear and the first 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 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.
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) The steering power is increased, and the steering is more portable.
6) The newly-added power cylinder is arranged at the front end, so that an oil path between the power cylinder and the steering gear is shortened, the arrangement is convenient, and the leakage risk of rotating oil is reduced.
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 drag link, 04 transition drag link, 05 first front axle knuckle arm, 06 second front axle drag link, 07 second front axle knuckle arm, 08 first front axle, 09 second front axle, 010 first front axle knuckle, 011 second front axle knuckle, 012 transition rocker arm assembly, 013 steering wheel, 014 steering column, 015 oil storage tank, 016 oil storage tube outlet tube, 017 oil pump, 018 steering gear inlet tube, 019 steering gear outlet tube, 1 steering wheel, 2 steering column, 3 steering gear, 4 drop arm, 5 first front axle drag link, 6 transition drag link, 7 power cylinder assembly, 8 second front axle drag link, 9 first front axle, 10 second front axle, 11 oil storage tank, 12 oil storage tank outlet tube, 13 oil pump, 14 steering gear inlet tube, 15 power steering gear outlet tube, 16 power cylinder left turn inlet tube, 17 power cylinder right turn inlet tube, 71, 72 piston, 73 left-turn oil inlet, 74 right-turn oil inlet, 75 rocker arm body, 76 tooth-shaped part, 77 tooth-shaped groove, 78 opening and 79 external insection.
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 first front axle drag link 5 and the lower extreme swing joint of the arm 4 that hangs down, the rear end and the 9 swing joint of first front axle drag link 5 like this, along with the swing back and forth of the arm that hangs down, drive the synchronous swing back and forth of first front axle drag link, and then drive first front axle forward or backward rotation, realize the left turn or the right turn of first front axle.
In the present application, the cylinder unit 7 is arranged on the frame rail between the steering gear and the first front axle, in contrast to the prior art, in front of the frame.
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 transition pull rod 6 is movably connected with the vertical arm, the connection point is positioned above the lower end of the vertical arm, and the rear end of the 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 8 is movably connected with the lower end of the rocker body, and the rear end of the second front axle drag link 8 is movably connected with the second front axle 10. Therefore, when the rocker arm body swings back and forth, the second front axle straight pull rod is driven to swing back and forth; therefore, the front and back movement of the second front axle drag link drives the second front axle to rotate left or right, thereby realizing steering.
As shown in fig. 3, 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 11, an oil storage pipe outlet pipe 12, an oil pump 13, a steering gear oil inlet pipe 14, a steering gear oil outlet pipe 15, a power cylinder left-turning oil inlet pipe 16, and a power cylinder right-turning oil inlet pipe 17.
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 (5)
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 front axle drag link, a transition drag link, a power cylinder assembly, a second front axle drag link, a first front axle and a second front axle;
the steering gear is mounted on a frame longitudinal beam through a steering gear bracket, the upper end of the vertical arm is connected with the steering gear, and the lower end of the vertical arm is movably connected with the front end of the first front axle drag link;
the rear end of the first front axle drag link is movably connected with the first front axle;
the front end of the transition pull rod is movably connected with the vertical arm, and the rear end of the 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 comprises a power cylinder and a rocker arm meshed with the power cylinder;
the rear end of the 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.
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 steering gear and the first 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 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.
5. 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 |
|---|---|---|---|
| CN201710362318.8A CN107187497B (en) | 2017-05-22 | 2017-05-22 | Double-front-axle automobile steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362318.8A CN107187497B (en) | 2017-05-22 | 2017-05-22 | Double-front-axle automobile steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107187497A CN107187497A (en) | 2017-09-22 |
| CN107187497B true CN107187497B (en) | 2020-08-21 |
Family
ID=59875265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710362318.8A Active CN107187497B (en) | 2017-05-22 | 2017-05-22 | Double-front-axle automobile steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107187497B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796714A (en) * | 1985-11-30 | 1989-01-10 | Hino Jidosha Kogyo Kabushiki Kaisha | Power steering system for use in large vehicle |
| CN2794969Y (en) * | 2004-10-21 | 2006-07-12 | 邵新兴 | Double front shaft power steering device |
| CN201176177Y (en) * | 2007-12-28 | 2009-01-07 | 安徽江淮汽车股份有限公司 | Steering gear for truck |
| CN201228026Y (en) * | 2008-03-27 | 2009-04-29 | 中油特种车辆有限公司 | Multi-axle steering gear |
| CN102862604A (en) * | 2012-09-18 | 2013-01-09 | 重庆迪马工业有限责任公司 | Full-hydraulic steering system of double front-axle passenger step |
| 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 |
| CN104228931A (en) * | 2014-09-06 | 2014-12-24 | 中国第一汽车股份有限公司 | Following steering gear assembly |
| CN106080768A (en) * | 2016-08-18 | 2016-11-09 | 安徽江淮汽车股份有限公司 | A kind of double-front axle automobile steering system |
| CN106184361A (en) * | 2016-08-18 | 2016-12-07 | 安徽江淮汽车股份有限公司 | A kind of double-front axle automobile steering system |
-
2017
- 2017-05-22 CN CN201710362318.8A patent/CN107187497B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796714A (en) * | 1985-11-30 | 1989-01-10 | Hino Jidosha Kogyo Kabushiki Kaisha | Power steering system for use in large vehicle |
| CN2794969Y (en) * | 2004-10-21 | 2006-07-12 | 邵新兴 | Double front shaft power steering device |
| CN201176177Y (en) * | 2007-12-28 | 2009-01-07 | 安徽江淮汽车股份有限公司 | Steering gear for truck |
| CN201228026Y (en) * | 2008-03-27 | 2009-04-29 | 中油特种车辆有限公司 | Multi-axle steering gear |
| 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 |
| CN102862604A (en) * | 2012-09-18 | 2013-01-09 | 重庆迪马工业有限责任公司 | Full-hydraulic steering system of double front-axle passenger step |
| CN104228931A (en) * | 2014-09-06 | 2014-12-24 | 中国第一汽车股份有限公司 | Following steering gear assembly |
| CN106080768A (en) * | 2016-08-18 | 2016-11-09 | 安徽江淮汽车股份有限公司 | A kind of double-front axle automobile steering system |
| CN106184361A (en) * | 2016-08-18 | 2016-12-07 | 安徽江淮汽车股份有限公司 | A kind of double-front axle automobile steering system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107187497A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105523028A (en) | Electronic-hydraulic compound brake system with electric brake assist function | |
| CN102862604A (en) | Full-hydraulic steering system of double front-axle passenger step | |
| CN203047347U (en) | Hydraulic transmission four-wheel steering mechanism | |
| CN107140013B (en) | Double-front-axle automobile steering system | |
| CN107161212B (en) | Double-front-axle automobile steering system | |
| CN203332205U (en) | Non-road mining dump truck large-torque steering system | |
| CN107187497B (en) | Double-front-axle automobile steering system | |
| CN105584526B (en) | Eight four bridge car steering of wheel | |
| CN107140015B (en) | Double-front-axle automobile steering system | |
| CN203601361U (en) | Automobile power-assisted steering structure | |
| CN202345752U (en) | Hydraulic plunger type steering transmission device | |
| CN209521757U (en) | Heavy-duty commercial vehicle high pressure steering system | |
| CN205469253U (en) | Lightweight steering gear support | |
| CN101428642A (en) | Five-shaft heavy-duty car steering system | |
| CN203974932U (en) | A kind of mine wide dumper driving and steering system | |
| CN202743230U (en) | Air chamber bracket assembly | |
| CN201580433U (en) | Passenger car power steering system | |
| CN203713446U (en) | Vehicular articulated system of large articulator | |
| CN205131368U (en) | Feeding car hydraulic control steering mechanism | |
| CN104960568A (en) | Rear wheel steering and returning mechanism for commercial vehicle | |
| CN201201641Y (en) | Double power steering device | |
| CN217730547U (en) | Symmetric boosting type double-front-axle steering system | |
| CN101670853B (en) | Steering mechanism of double-body vehicle | |
| CN206327434U (en) | A kind of power steering apparatus of vehicle | |
| CN201099280Y (en) | Compact type tractor front drive assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |