CN102133889A

CN102133889A - Tail safety brake device of motor vehicle

Info

Publication number: CN102133889A
Application number: CN2011100575132A
Authority: CN
Inventors: 刘成祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-10
Filing date: 2011-03-10
Publication date: 2011-07-27

Abstract

The invention discloses a tail safety brake device of a motor vehicle, which is installed at the tail part of the motor vehicle. The device comprises a support (3) and a pressure rod (7), wherein the support (7) is fixed at a tail bottom plate (6) or on a tail base frame; one end of the pressure rod (7) is moveably connected with the support and the other end of the pressure rod (7) is moveably connected with a brake plate (8); the brake plate comprises a support plate (9) and a wear-resistance plate (12) moveably fixed on the support plate; the pressure rod is moveably connected with an ejector rod (5) which makes the brake plate suspended when the motor vehicle runs normally and makes the wear-resistance plate on the brake plate tightly adhered to the pavement when the motor vehicle performs emergency brake; and the ejector rod is connected with a power unit. When the motor vehicle performs emergency brake during high-speed running, the friction force between the motor vehicle and the pavement can be increased, so that the brake capability is improved and the brake distance is shortened; and the emergency brake is realized in a relatively short distance which can be effectively controlled as far as possible, so various traffic accidents are reduced. The novel tail auxiliary safety brake device of the motor vehicle is compactly structured, reliable and safe to use and convenient to dismantle.

Description

The motor vehicle tail safety catch

Technical field

The present invention relates to vehicle braking device, especially relate to the motor vehicle tail safety catch.

Background technology

Along with constant development of economy, highway in China, special expressway construction has been obtained very big achievement, and in recent years, provincial highway, national highway, particularly express highway be woven into a multilevel traffic internet that trunk is clearly demarcated, crisscross to China all directions.Because provincial highway, the evenness of road surface of national highway, particularly express highway and the raising of highway administration level and transport administration dynamics, the time continuous property that self-propelled vehicle is run at high speed on highway improves greatly, the number of times of self-propelled vehicle emergency braking also descends significantly, not only improved the running efficiency of self-propelled vehicle, reduce running cost, and can reduce mechanical wear, reduce energy consumption.So self-propelled vehicle, special dolly and passenger vehicle are at the provincial highway of smooth-riding surface, national highway, particularly running on expressway speed is all than comparatively fast, but when moving velocity reach 80 axioms/hour more than the time, because the restriction of existing self-propelled vehicle conventional brake ability, take as emergency situation and during emergency braking, the stopping distance of existing self-propelled vehicle is long, especially in overcast and rainy and frost sky, the poor stop of existing self-propelled vehicle, can not make self-propelled vehicle in actv. command range scope, realize sudden stop, therefore might cause self-propelled vehicle the lighter to bump, knock into the back, rollovers etc., weight person then can cause serious traffic accidents such as car crash.

Summary of the invention

Restriction at self-propelled vehicle conventional brake ability in the above-mentioned prior art, when self-propelled vehicle is run at high speed, emergency stopping distance is long, cause taking place the problem of various safety traffic accidents, the present invention proposes and a kind ofly be installed in existing motor vehicle tail, can improve braking potential, shorten stopping distance, make self-propelled vehicle in than short range, realize sudden stop, thereby reduce the motor vehicle tail safety catch that various traffic accidents take place.

The technical scheme that the technical problem to be solved in the present invention is taked is: described motor vehicle tail safety catch is installed in motor vehicle tail, it comprises and is fixed on the afterbody base plate or the bearing on the afterbody underframe, the depression bar that one end and bearing are movably connected, the depression bar other end is connected with slipper, described slipper comprises stay bearing plate and the movable wear plate that is fixed on the stay bearing plate, be connected with on the described depression bar slipper is hung, can make the wear plate on the slipper be close to the ground-surface knock-pin when the self-propelled vehicle emergency braking, described knock-pin links to each other with engine installation.

Described engine installation is oil cylinder, cylinder or other engine installation.

The present invention mainly be suitable for dolly or passenger vehicle on the more smooth provincial highway in road surface, national highway, the particularly express highway and moving velocity 80 axioms/hour more than and use when taking emergency braking, it can increase the frictional resistance between motor vehicle rear and the road surface, improve the braking potential of existing self-propelled vehicle, shorten emergency stopping distance, in the effective control distance scope, realize sudden stop as far as possible, play the auxiliary braking effect, thereby reduce the generation of various safety traffic accidents.

Described knock-pin can link to each other with oil cylinder or cylinder equal power device and realize the lifting of slipper, and control by computer, when self-propelled vehicle moving velocity on the smooth-riding surface reach 80 axioms/hour more than and when taking emergency braking, to send signal from trend oil cylinder or cylinder, knock-pin action is swung slipper fast and wear plate contact with the road surface tightly under the knock-pin effect, the friction between increase self-propelled vehicle and the road surface, increase the braking potential of self-propelled vehicle, shorten stopping distance; When travelling on the highway of self-propelled vehicle at roughness pavement or on the many cities and towns rural highway of people, since moving velocity generally be lower than 80 axioms/hour, oil cylinder or the cylinder knock-pin of will living is regained, knock-pin is mentioned into suspension status with depression bar, make slipper leave road surface (as Fig. 1 long and short dash line position), thereby do not influence the cruising and the conventional brake ability of self-propelled vehicle.

Motor vehicle tail safety catch of the present invention, it is installed in motor vehicle tail, do not influence cruising and conventional brake and other structure of existing self-propelled vehicle, when self-propelled vehicle is run at high speed when taking emergency braking, it can increase the friction between self-propelled vehicle and the road surface, improve braking potential, shorten stopping distance; As far as possible effective control than short-range in realize sudden stop, thereby reduce the generation of various safety traffic accidents.Its compact conformation uses reliable and securely, and easy accessibility is a kind of later-model self-propelled vehicle auxiliary security brake equipment.

Description of drawings

Fig. 1 is the structural representation of motor vehicle tail safety catch of the present invention,

Fig. 2 is the described slipper A-A of a Fig. 1 sectional structure scheme drawing,

Fig. 3 is second kind of slipper sectional structure scheme drawing of the present invention,

Fig. 4 is the third slipper sectional structure scheme drawing of the present invention.

Dolly afterbody 2, hind axle 3, bearing 4, oil cylinder 5, knock-pin 6, afterbody base plate 7, depression bar 8, slipper 9, stay bearing plate 10, movable joint 11, screw rod 12, wear plate 13, spring 14, rear wheel 15, hinge 16, liner plate in the drawings, 1.

The specific embodiment

Embodiment 1, in Fig. 1 and Fig. 2, described motor vehicle tail safety catch comprises bearing 3, depression bar 7, slipper 8 and knock-pin 5, bearing 3 is fixed near the afterbody base plate 6 of midway location hind axle 2 rear portions of dolly afterbody 1, depression bar 7 one ends are movably connected with hinge 15 and bearing, the depression bar other end is movably connected by stay bearing plate 9 midways location on movable joint 10 and the slipper 8, knock-pin 5 one ends link to each other with the depression bar intermediate active, the knock-pin other end links to each other with oil cylinder 4, described oil cylinder is fixed on the afterbody base plate, described slipper comprises the stay bearing plate 9 that is movably connected with depression bar and is fixed on wear plate 12 on the stay bearing plate with some screw rods spaced apart 11, described stay bearing plate length be between afterbody two rear wheels 14 distance 1/2nd to 2/3rds, described wear plate is wear-resistant rubber sheet or other wear plate.Certain described bearing also can vertically be set to two arranged side by side along the afterbody base plate, be movably connected with two depression bars and slipper, be movably connected with depression bar respectively with two synchronous knock-pins, to improve the braking force of afterbody safety catch, the size of described depression bar length and cross-sectional plane, oil cylinder or cylinder pressure size and stay bearing plate, wear plate thickness and size, set-up mode etc. can design respectively according to different automobile types and style (as dolly, passenger vehicle or other self-propelled vehicle etc.).

Embodiment 2, in Fig. 1 and Fig. 3, except that described slipper structure and embodiment 1 are different, embodiment 2 other structures are identical with embodiment 1, described slipper comprises stay bearing plate 9, wear plate 12 and liner plate 16, described wear plate is fixed on the liner plate with screw rod and is obliquely installed, described liner plate one end and stay bearing plate are movably connected, between liner plate and stay bearing plate, be provided with spring 13, the liner plate other end and stay bearing plate separate, wear plate and liner plate are angle less than 15 ° be obliquely installed, and described spring is that a row or two rows are provided with.

Embodiment 3, in Fig. 1 and Fig. 4, because express highway, particularly the road surface of some provincial highways or national highway is not very smooth, in order to improve the auxiliary braking ability of afterbody safety catch of the present invention, except that described slipper structure and embodiment 1 and embodiment 2 are different, other structure of embodiment 3 is identical with embodiment 1, described slipper comprises stay bearing plate and wear plate, described wear plate 12 is made up of the plurality of small blocks wear plate, every fritter wear plate is fixedly linked with spring 13 and stay bearing plate 9 respectively, and described wear plate is vertically arranged along the afterbody base plate

Make each fritter wear plate can all realize contacting, thereby improve the braking potential of the present invention on little even running road surface with little even running road surface.

Except that the represented structure of Fig. 4 of Fig. 1, Fig. 2, Fig. 3; the structure of the following stated also should belong to the scope that the present invention asks for protection: wear plate swing when preventing emergency braking shown in Figure 4; can be provided with guide rod (not drawing among the figure) between described wear plate and the stay bearing plate; i.e. Location guide on wear plate, guide rod is more closely-spaced cooperation and passes stay bearing plate.The bottom surface of described wear plate can be designed to whole of linear pattern with ground-surface contact surface and contacts in addition, also arc surface or tear the contact of curving face open; The brake equipment that is similar to other lever shown in Figure 1 or crank-type structure in addition also should belong in the scope that the present invention will protect.

Claims

1. motor vehicle tail safety catch, it is installed in motor vehicle tail, it is characterized in that: described motor vehicle tail safety catch comprise be fixed on that afterbody base plate (6) is gone up or the afterbody underframe on bearing (3), the depression bar that one end and bearing are movably connected (7), the depression bar other end is connected with slipper (8), described slipper comprises stay bearing plate (9) and the movable wear plate (12) that is fixed on the stay bearing plate, be connected with on the described depression bar slipper is hung, can make the wear plate on the slipper be close to ground-surface knock-pin (5) when the self-propelled vehicle emergency braking, described knock-pin links to each other with engine installation.

2. motor vehicle tail safety catch according to claim 1, it is characterized in that: described wear plate (12) is fixed on liner plate (16) and goes up and be obliquely installed, described liner plate one end and stay bearing plate are movably connected, and are provided with spring (13) between liner plate and stay bearing plate.

3. motor vehicle tail safety catch according to claim 1, it is characterized in that: described wear plate (12) is fixed on liner plate (16) and goes up and be obliquely installed, described liner plate one end and stay bearing plate are movably connected, and are provided with spring (13) between liner plate and stay bearing plate.