CN112758181B - Trailer four-wheel steering mechanism - Google Patents
Trailer four-wheel steering mechanism Download PDFInfo
- Publication number
- CN112758181B CN112758181B CN202110120652.9A CN202110120652A CN112758181B CN 112758181 B CN112758181 B CN 112758181B CN 202110120652 A CN202110120652 A CN 202110120652A CN 112758181 B CN112758181 B CN 112758181B
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- steering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D13/00—Steering specially adapted for trailers
- B62D13/02—Steering specially adapted for trailers for centrally-pivoted axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/242—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for supporting braking actions, e.g. braking means integrated with hitches; Braking sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/243—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for protection in case of crash, collision, impact or the like
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention provides a four-wheel steering mechanism of a trailer, which comprises a frame and at least two groups of connecting cross axles, wherein the frame is arranged on the connecting cross axles, two ends of each connecting cross axle are connected with wheels through steering crank arms, front wheels are connected with a steering frame through first steering crank arms, the first steering crank arms of the front wheels are connected with one ends of the steering arms through steering front pull rods, the other ends of the steering arms are connected with second steering crank arms of rear wheels through steering rear pull rods, and the middle parts of the steering arms are rotatably connected with the frame through rotating shafts. The front wheel can drive the front steering pull rod to move back and forth when steering, the front steering pull rod is connected with the rear steering pull rod through the reversing arm so that the rear steering pull rod moves reversely to drive the rear wheel and the front wheel to realize synchronous reverse steering and realize the four-wheel synchronous steering function, and the rear axle is also provided with a rear steering balance pull rod to ensure the steering synchronism of the left and right wheels. The four tires of the trailer are synchronously steered, the turning radius is greatly reduced, the vehicle maneuverability is improved, the flexibility is improved, and the tire abrasion is reduced.
Description
Technical Field
The invention relates to the field of trailers, in particular to a four-wheel steering mechanism of a trailer.
Background
At present, the traditional trailer steering mechanism can only realize the steering of the front wheels, the whole trailer can be steered by the rear wheels under the traction of the front wheels, the steering mechanism is inflexible in steering, the minimum turning radius is large, and the whole trailer is not suitable to be steered in a narrow space. Therefore, a four-wheel steering mechanism capable of stably achieving simultaneous steering of front wheels and rear wheels is needed, the minimum turning radius can be reduced, and the operation capacity of the whole vehicle in a narrow space is improved.
Chinese patent CN 207015426U "a four-wheel steering mechanism for trailer" this four-wheel steering mechanism directly transmits the swing of the drawbar to the steering rod, and realizes the wheel steering by the steering rod pulling the steering rod and the knuckle arm. The structure has poor synchronization performance, the steering directions of the front wheels and the rear wheels are the same, and the turning radius does not reach the minimum.
Chinese patent CN201042971Y "a four-wheel steering mechanism for a motor vehicle" belongs to the field of steering mechanisms for motor vehicles, and the steering mechanism transfers the steering to a rear-wheel steering transmission mechanism through a set of gear transmission device through the steering of a front-wheel steering transmission mechanism. The front wheel steering, the front wheel and the rear wheel steering in the same direction and in the opposite direction are realized through the meshing and dislocation of the front transmission gear and the steering gear set. The adoption of the gear connection mode has poor stability, and the reversing structure is complex and difficult to maintain.
Chinese patent CN104925132A, "chassis with four-wheel steering" rear steering axle includes a rear wheel steering drive axle and a rear wheel steering return mechanism, wherein the rear wheel steering drive axle includes an axle body, a left knuckle and a right knuckle respectively located at two ends of the axle body, two knuckle arms respectively fixed to the left knuckle and the right knuckle, two trapezoid arms respectively fixed to the left knuckle and the right knuckle, and a rear tie rod connecting the two trapezoid arms; the left steering knuckle and the right steering knuckle are respectively and fixedly connected with hubs of two rear wheels; the rear wheel steering and aligning mechanism comprises a hydraulic aligning cylinder, a motor, a rear wheel steering machine, a steering rocker arm and a rear wheel steering pull rod which are sequentially connected, a knuckle arm connected with the rear wheel steering pull rod moves to drive the rear wheel to steer, and the other knuckle arm is connected with a piston rod of the hydraulic aligning cylinder. Adopt electric drive liquid feeding pressure helping hand, the motor drives rear wheel steering machine, and rear wheel steering machine passes through hydraulic pressure helping hand, promotes rear wheel steering mechanism again, adopts the electric mode also comparatively inconvenient on the trailer.
Disclosure of Invention
The invention mainly aims to provide a four-wheel steering mechanism of a trailer, which solves the problems that the steering mechanism is inflexible in steering, large in minimum turning radius and not suitable for steering the whole trailer in a narrow space, and the whole trailer is steered under the traction of front wheels by rear wheels.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a trailer four-wheel steering mechanism, includes frame and at least two sets of connection crossbeams, and the frame is established on connecting the crossbeams, connects the crossbeams both ends and is connected with the wheel through turning to the turning arm, and the front wheel is connected with the bogie through first turning to the turning arm, and the first turning to the turning arm of front wheel is connected with turning to arm one end through turning to the front pull rod, turns to the arm other end and is connected with the second turning to the turning arm of rear wheel through turning to the back pull rod, turns to the arm middle part and passes through axis of rotation and frame rotation and be connected.
In the preferred scheme, a steering turntable is arranged on a bogie, the bogie is rotationally connected with a frame through the steering turntable, and two sides of the end part of the bogie are respectively connected with first steering crank arms at two ends of a connecting transverse bridge through two front-rotating transverse pull rods.
In the preferred scheme, one end of the front-rotating transverse pull rod is hinged with the bogie, and the other end of the front-rotating transverse pull rod is hinged with the first small support rod of the first steering crank arm.
In the preferred scheme, connect horizontal bridge tip and be equipped with the articulated seat of second, turn to be equipped with the connecting block on the turning arm, turn to the turning arm and pass through the connecting block and rotate with the articulated seat of second and be connected, the wheel with turn to the turning arm and rotate and be connected.
In the preferred scheme, one end of a steering front pull rod is hinged with a first large support rod of a first steering crank arm, the other end of the steering front pull rod is hinged with the steering arm, one end of a steering rear pull rod is hinged with the steering arm, the other end of the steering rear pull rod is hinged with a second large support rod of a second steering crank arm, and two ends of a rotating shaft of the steering arm are connected with a frame through bearing seats.
In the preferred scheme, the rear wheels are connected with a rear connecting transverse axle through second steering crank arms, a rear steering transverse pull rod is further arranged and connected with the second steering crank arms of the two rear wheels, and two ends of the rear steering transverse pull rod are hinged with second small support rods of the second steering crank arms of the two rear wheels.
In the preferred scheme, the front wheels and the rear wheels are symmetrically arranged along the center line of the bogie, the connecting transverse axle and the rear connecting transverse axle are provided with a plurality of leaf springs, and the frame is arranged on the leaf springs.
In the preferred scheme, still be equipped with a plurality of bumper shock absorbers between frame and connection cross axle and the rear connection cross axle, bumper shock absorber one end is articulated with the first articulated seat of connecting the cross axle, and the other end is articulated with the wheel casing of frame.
In the preferred scheme, the hydraulic cylinder is further provided with a traction frame, the traction frame is connected with the steering frame through a pin shaft, the end part of the traction frame is provided with a traction device, the traction device comprises a traction ring, a traction chain is arranged on the traction ring, an impact brake is arranged above the traction device, a brake disc is arranged on a wheel, a brake caliper is arranged on the brake disc, and the brake caliper is communicated with a hydraulic cylinder body of the impact brake;
the striking is stopped including the fixing base, is equipped with the impact head on the fixing base, and the first tip of striking passes the fixing base and is close to the head of leaning on, supports to establish at the control arm tip by the head, and the control arm passes through hinge bar and supporting seat connection, and the supporting seat is established on the fixing base, is equipped with the hydraulic pressure staving on the supporting seat, and the hydraulic stem of hydraulic pressure staving is articulated with the control arm, is equipped with the locking rack on the control arm, and a plurality of latch cards of locking rack are spacing on the supporting seat.
When in use, the four-wheel steering chassis system is provided with a traction frame, and a traction ring is arranged on the traction frame and can be connected with a tractor through the traction ring so as to pull the trailer. The traction frame is provided with an impact type braking system to realize the braking of the whole vehicle. The traction frame is hinged with the bogie through a pin shaft, and jolt on a road surface can be absorbed through the hinge mechanism, and the traction frame can flexibly rotate up and down around the pin shaft under various road conditions. The bogie is fixed below the frame through a steering turntable, a ball head at the tail end of the bogie is connected with a front steering tie rod, the front steering tie rod is connected with a front wheel of the vehicle, the traction frame can swing left and right along with the tractor when the tractor steers, and the traction frame can drive the front steering tie rod to move left and right while swinging so as to drive the front wheel to realize left and right steering. The front wheel can drive the front steering pull rod to move back and forth when steering, the front steering pull rod is connected with the rear steering pull rod through the reversing arm so that the rear steering pull rod moves reversely to drive the rear wheel and the front wheel to realize synchronous reverse steering and realize the four-wheel synchronous steering function, and the rear axle is also provided with a rear steering balance pull rod to ensure the steering synchronism of the left and right wheels. The four tires of the trailer are synchronously steered, the turning radius is greatly reduced, the vehicle maneuverability is improved, the flexibility is improved, and the tire abrasion is reduced. The mechanism has simple structure and flexible operation, can realize the adjustment of the equidirectional and opposite rotation of the front wheel and the rear wheel, and can carry out turning with smaller radius and parking in narrow space according to the intention of a driver. The steering mechanism does not need hydraulic and electronic systems with complex structures, has low manufacturing cost and can be widely used for four-wheel steering operation of various motor vehicles.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a general block diagram of the present invention;
FIG. 2 is a structural view of a front wheel and rear wheel steering mounting position of the present invention;
FIG. 3 is a four wheel steering mounting structure of the present invention;
FIG. 4 is a structural view of the steering arm mounting of the present invention;
FIG. 5 is a structural view of the present invention mounted to a crank arm;
FIG. 6 is a structural view of the impact brake mounting of the present invention;
in the figure: a frame 1; a wheel cover 2; a traction frame 3; an impact brake 4; a striker head 401; a fixed base 402; a hydraulic bucket body 403; a head 404; a hinge lever 405; a control arm 406; a locking rack 407; a hydraulic rod 408; a support seat 409; a traction device 5; a traction ring 501; a drag chain 502; a pin 6; a steering wheel 7; a bogie 8; connecting the transverse bridge 9; a first hinge mount 901; a second hinge mount 902; a rear connecting transverse bridge 903; a shock absorber 10; the front turning transverse pull rod 11; a front wheel 12; turning the front pull rod 13; a ball head 14; a steering arm 15; a bearing housing 16; a rotating shaft 1601; a steering rear link 17; a rear wheel 18; a rear steering cross tie rod 19; a leaf spring 20; a brake caliper 21; a brake disc 22; a first steering crank arm 23; a first large strut 2301; a first small strut 2302; a connecting block 2303; a second steering knuckle arm 24; a second large strut 2401; second small strut 2402.
Detailed Description
As shown in fig. 1 to 6, a four-wheel steering mechanism for a trailer comprises a frame 1 and at least two groups of connecting cross bridges 9, wherein the frame 1 is arranged on the connecting cross bridges 9, two ends of the connecting cross bridges 9 are connected with wheels through steering crank arms, front wheels 12 are connected with a bogie 8 through first steering crank arms 23, the first steering crank arms 23 of the front wheels 12 are connected with one end of a steering arm 15 through a steering front pull rod 13, the other end of the steering arm 15 is connected with second steering crank arms 24 of rear wheels 18 through a steering rear pull rod 17, and the middle part of the steering arm 15 is rotatably connected with the frame 1 through a rotating shaft 1601. As shown in the structure of figure 2, the front wheels 12 and the rear wheels 18 are connected through a steering front pull rod 13 and a steering rear pull rod 17, the steering front pull rod 13 and the steering rear pull rod 17 are connected through a steering arm 15, when the front wheels 12 rotate rightwards, the rear wheels 18 rotate leftwards, and the synchronous reverse steering of the front wheels 12 and the front wheels 12 is realized, so that the four-wheel synchronous steering function is realized.
In the preferred scheme, a steering turntable 7 is arranged on a bogie 8, the bogie 8 is rotationally connected with the frame 1 through the steering turntable 7, and two sides of the end part of the bogie 8 are respectively connected with first steering crank arms 23 at two ends of a connecting cross bridge 9 through two front-turning transverse pull rods 11. The bogie 8 is fixed below the frame 1 through the steering turntable 7, the ball head at the tail end of the bogie 8 is connected with the front steering transverse pull rod 11, the front steering transverse pull rod 11 is connected with the front wheel 12 of the vehicle, the traction frame 8 can swing left and right along with the tractor when the tractor steers, and the traction frame 8 can drive the front steering transverse pull rod 11 to move left and right while swinging so as to drive the front wheel 12 and the rear wheel 18 to realize left and right steering.
In a preferred scheme, one end of the front transverse pull rod 11 is hinged with the bogie 8, and the other end of the front transverse pull rod 11 is hinged with the first small fulcrum 2302 of the first steering crank arm 23. In the structure shown in fig. 3 or 5, the first small fulcrum 2302 of the first steering crank arm 23 is hinged with the front-to-back cross pull rod 11, and the front-to-back cross pull rod 11 drives the first steering crank arm 23 to rotate.
In the preferred scheme, connect 9 tip of cross axle and be equipped with the articulated seat 902 of second, turn to and be equipped with connecting block 2303 on the turning arm, turn to the turning arm and pass through connecting block 2303 and be connected with the articulated seat 902 rotation of second, the wheel with turn to the turning arm and rotate and be connected. The steering crank arm is hinged with a second hinged seat 902 connected with a transverse bridge 9 through a connecting block 2303, so that the wheels can swing left and right.
In a preferable scheme, one end of a front steering pull rod 13 is hinged with a first large strut 2301 of a first steering crank arm 23, the other end of the front steering pull rod is hinged with a steering arm 15, one end of a rear steering pull rod 17 is hinged with the steering arm 15, the other end of the rear steering pull rod is hinged with a second large strut 2401 of a second steering crank arm 24, and two ends of a rotating shaft 1601 of the steering arm 15 are connected with a frame 1 through bearing seats 16. As shown in the structure of FIG. 3, the first steering crank arm 23 and the second steering crank arm 24 are connected through a first large strut 2301 and a second large strut 2401, and the steering front pull rod 13 and the steering rear pull rod 17 are connected through a steering arm 15, so that the front wheel 12 and the rear wheel 18 are driven to steer in the left-right direction.
In a preferable scheme, the rear wheels 18 are connected with a rear connecting transverse axle 903 through second steering crank arms 24, a rear steering transverse pull rod 19 is further arranged, the rear steering transverse pull rod 19 is connected with the second steering crank arms 24 of the two rear wheels 18, and two ends of the rear steering transverse pull rod 19 are hinged to second small support rods 2402 of the second steering crank arms 24 of the two rear wheels 18. And a rear steering balance pull rod 19 is also arranged on the rear shaft to ensure the steering synchronism of the left and the right wheels of the rear wheel 18.
In a preferable scheme, the front wheels 12 and the rear wheels 18 are symmetrically arranged along the center line of the bogie 8, the connecting transverse bridge 9 and the rear connecting transverse bridge 903 are provided with a plurality of leaf springs 20, and the frame 1 is arranged on the leaf springs 20. The front wheel 12 and the rear wheel 18 are arranged in bilateral symmetry, as shown in the configuration of fig. 2-3. The leaf spring 20 also acts as a shock absorber.
In the preferred scheme, still be equipped with a plurality of bumper shock absorbers 10 between frame 1 and connection cross axle 9 and the rear connection cross axle 903, bumper shock absorber 10 one end is articulated with the first articulated seat 901 of connecting cross axle 9, and the other end is articulated with wheel casing 2 of frame 1. The shock absorber 10 and the steel plate spring 20 are matched, so that the shock absorption effect is better.
In a preferable scheme, the traction frame 3 is further arranged, the traction frame 3 is connected with a bogie 8 through a pin shaft 6, the end of the traction frame 3 is provided with a traction device 5, the traction device 5 comprises a traction ring 501, a traction chain 502 is arranged on the traction ring 501, an impact brake 4 is arranged above the traction device 5, a brake disc 22 is arranged on a wheel, a brake caliper 21 is arranged on the brake disc 22, the brake caliper 21 is communicated with a hydraulic barrel body 403 of the impact brake 4, the impact brake 4 comprises a fixed seat 402, an impact head 401 is arranged on the fixed seat 402, the end of the impact head 401 penetrates through the fixed seat 402 and is close to an abutting head 404, the abutting head 404 is arranged at the end of a control arm 406, the control arm 406 is connected with a supporting seat 409 through a hinge rod 405, the supporting seat 409 is arranged on the fixed seat 402, the hydraulic barrel body 403 is arranged on the supporting seat 409, a hydraulic rod 408 of the hydraulic barrel body 403 is hinged with the control arm 406, a locking rack 407 is arranged on the control arm 406, and a plurality of the locking racks 407 are clamped on the supporting seat 409 for limiting. When the impact head 401 is impacted in front, the impact head 401 pushes the abutting head 404 at the end of the control arm 406, the control arm 406 pushes the hydraulic rod 408 to enable the hydraulic barrel body 403 to be compressed onto the brake caliper 21 hydraulically, the brake caliper 21 presses the brake disc 22 to lock the tire for braking, in order to lock the control arm 406, the locking rack 407 on the control arm 406 is inverted tooth, the locking rack 407 is clamped on the supporting seat 409 forwards, and the locking rack 407 needs to be manually loosened to lock the advancing position of the control arm 406, so that the control arm 406 retracts.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of this invention.
Claims (5)
1. A four-wheel steering mechanism of a trailer is characterized in that: the front-rear steering frame comprises a frame (1) and at least two groups of connecting transverse bridges (9), wherein the frame (1) is arranged on the connecting transverse bridges (9), two ends of each connecting transverse bridge (9) are connected with wheels through steering connecting levers, front wheels (12) are connected with a steering frame (8) through first steering connecting levers (23), the first steering connecting levers (23) of the front wheels (12) are connected with one ends of steering arms (15) through steering front pull rods (13), the other ends of the steering arms (15) are connected with second steering connecting levers (24) of rear wheels (18) through steering rear pull rods (17), and the middle parts of the steering arms (15) are rotatably connected with the frame (1) through rotating shafts (1601);
a steering turntable (7) is arranged on the bogie (8), the bogie (8) is rotatably connected with the frame (1) through the steering turntable (7), and two sides of the end part of the bogie (8) are respectively connected with first steering crank arms (23) at two ends of a connecting transverse bridge (9) through two front-turning transverse pull rods (11);
one end of a front steering pull rod (13) is hinged with a first large support rod (2301) of a first steering crank arm (23), the other end of the front steering pull rod is hinged with a steering arm (15), one end of a rear steering pull rod (17) is hinged with the steering arm (15), the other end of the rear steering pull rod is hinged with a second large support rod (2401) of a second steering crank arm (24), and two ends of a rotating shaft (1601) of the steering arm (15) are connected with the frame (1) through a bearing seat (16);
the rear wheels (18) are connected with a rear connecting transverse axle (903) through second steering crank arms (24), a rear steering transverse pull rod (19) is further arranged, the rear steering transverse pull rod (19) is connected with the second steering crank arms (24) of the two rear wheels (18), and two ends of the rear steering transverse pull rod (19) are hinged with second small support rods (2402) of the second steering crank arms (24) of the two rear wheels (18);
the brake block is further provided with a traction frame (3), the traction frame (3) is connected with a bogie (8) through a pin shaft (6), a traction device (5) is arranged at the end part of the traction frame (3), the traction device (5) comprises a traction ring (501), a traction chain (502) is arranged on the traction ring (501), an impact brake (4) is arranged above the traction device (5), a brake disc (22) is arranged on a wheel, brake calipers (21) are arranged on the brake disc (22), and the brake calipers (21) are communicated with a hydraulic barrel body (403) of the impact brake (4);
striking is stopped (4) including fixing base (402), be equipped with impact head (401) on fixing base (402), impact head (401) tip passes fixing base (402) and is close to and supports head (404), support head (404) are established at control arm (406) tip to supporting head (404), control arm (406) are connected with supporting seat (409) through hinge bar (405), establish on fixing base (402) supporting seat (409), establish on supporting seat (409) hydraulic pressure staving (403), hydraulic stem (408) of hydraulic pressure staving (403) are articulated with control arm (406), be equipped with locking rack (407) on control arm (406), a plurality of latch cards of locking rack (407) are spacing on supporting seat (409).
2. The four-wheel steering mechanism for trailer as claimed in claim 1, wherein: one end of a front rotating transverse pull rod (11) is hinged with the bogie (8), and the other end of the front rotating transverse pull rod (11) is hinged with a first small strut (2302) of a first steering crank arm (23).
3. The four-wheel steering mechanism for trailer as claimed in claim 1, wherein: connect horizontal axle (9) tip and be equipped with articulated seat of second (902), turn to be equipped with connecting block (2303) on the connecting lever, turn to the connecting lever and pass through connecting block (2303) and rotate with articulated seat of second (902) to be connected, the wheel with turn to the connecting lever and rotate and be connected.
4. The four-wheel steering mechanism for a trailer of claim 1, wherein: the front wheels (12) and the rear wheels (18) are symmetrically arranged along the center line of the bogie (8), the connecting transverse axle (9) and the rear connecting transverse axle (903) are provided with a plurality of leaf springs (20), and the frame (1) is arranged on the leaf springs (20).
5. The four-wheel steering mechanism for trailer as claimed in claim 1, wherein: a plurality of shock absorbers (10) are further arranged between the frame (1) and the connecting transverse axle (9) and between the rear connecting transverse axle (903), one end of each shock absorber (10) is hinged to a first hinge seat (901) connected with the transverse axle (9), and the other end of each shock absorber is hinged to a wheel cover (2) of the frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110120652.9A CN112758181B (en) | 2021-01-28 | 2021-01-28 | Trailer four-wheel steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110120652.9A CN112758181B (en) | 2021-01-28 | 2021-01-28 | Trailer four-wheel steering mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112758181A CN112758181A (en) | 2021-05-07 |
| CN112758181B true CN112758181B (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110120652.9A Active CN112758181B (en) | 2021-01-28 | 2021-01-28 | Trailer four-wheel steering mechanism |
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| Country | Link |
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| CN (1) | CN112758181B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113276941B (en) * | 2021-07-02 | 2024-08-23 | 北京汽车集团越野车有限公司 | Centering limiting device and vehicle |
| CN113715564B (en) * | 2021-08-30 | 2025-05-27 | 郑州佛光发电设备股份有限公司 | Trailer with adaptive towing arm |
| CN118494426B (en) * | 2024-07-16 | 2024-09-17 | 广州富唯智能科技有限公司 | Workshop logistics transport vehicle |
| WO2026033568A1 (en) * | 2024-08-06 | 2026-02-12 | Waage Bjarki V | Steering system for a vehicle |
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| CN2620654Y (en) * | 2003-05-26 | 2004-06-16 | 黄光明 | Operating control device for powerless cargo trailer |
| CN201042971Y (en) * | 2007-01-08 | 2008-04-02 | 徐晓涛 | Four-wheel steering mechanism of motor vehicle |
| CN201245176Y (en) * | 2008-08-04 | 2009-05-27 | 徐晓涛 | Four-wheel steering mechanism for motor vehicle |
| CN101659275B (en) * | 2008-08-27 | 2011-05-04 | 蒋友明 | Small four-wheel trailer |
| CN201914236U (en) * | 2010-04-01 | 2011-08-03 | 上海景想广告传播有限公司 | Braking mechanism of advertising vehicle |
| CN201792898U (en) * | 2010-08-13 | 2011-04-13 | 威海市九跃车桥有限公司 | Four-wheel steering mechanism of trailer |
| US9004519B1 (en) * | 2011-09-28 | 2015-04-14 | Geoffrey S. Beech | Tow bar controlled trailer and method |
| CN102673644B (en) * | 2012-05-31 | 2014-07-16 | 衢州市华夏专用汽车有限公司 | Steering linkage system for semitrailer |
| CN103832509B (en) * | 2014-02-19 | 2016-11-23 | 湖州东方汽车有限公司 | A kind of flat trailer of four-wheel steering |
| CN203753273U (en) * | 2014-02-19 | 2014-08-06 | 湖州东方汽车有限公司 | Four-wheel steering horizontal trailer |
| CN104802851A (en) * | 2015-05-05 | 2015-07-29 | 连云港天明装备有限公司 | Underground shuttle vehicle for coal mine |
| CN104925132A (en) * | 2015-07-08 | 2015-09-23 | 武汉理工大学 | Chassis with four-wheel steering function |
| CN207015426U (en) * | 2017-06-14 | 2018-02-16 | 郑州飞机装备有限责任公司 | A kind of trailer four-wheel steering mechanism |
| CN108859632A (en) * | 2018-06-11 | 2018-11-23 | 福州枫蕊生态科技有限公司 | It can go up a slope and turn to full trailor |
| CN110217061A (en) * | 2019-07-26 | 2019-09-10 | 衡阳合力工业车辆有限公司 | Trailer and transport vehicle |
| CN110682747A (en) * | 2019-10-31 | 2020-01-14 | 贵州航天特种车有限责任公司 | Traction device of self-adaptive parallel mechanism |
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2021
- 2021-01-28 CN CN202110120652.9A patent/CN112758181B/en active Active
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| CN112758181A (en) | 2021-05-07 |
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Denomination of invention: A trailer four-wheel steering mechanism Effective date of registration: 20230802 Granted publication date: 20230113 Pledgee: Zhijiang Tianyu Agricultural Financing Guarantee Co.,Ltd. Pledgor: Yichang Xinwei Special Vehicle Manufacturing Co.,Ltd. Registration number: Y2023980050688 |
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