CN2091795U

CN2091795U - Braking mechanism for small trailer

Info

Publication number: CN2091795U
Application number: CN 91205836
Authority: CN
Inventors: 李宗祥; 李培祥; 潘文德; 刘树来; 李广学; 杨玲
Original assignee: POST AND TELECOMMUNICATION INDUSTRY Co HARBIN
Current assignee: POST AND TELECOMMUNICATION INDUSTRY Co HARBIN
Priority date: 1991-04-10
Filing date: 1991-04-10
Publication date: 1992-01-01

Abstract

The utility model relates to a braking mechanism for a small trailer, comprising a main pulling rod, an assistant pulling rod with a flexual handle and a traction ring. The main pulling rod is hinged on a trailer body via a pin, one end of the assistant pulling rod with the flexual handle is connected with the traction ring, and the other end is hinged on the upper end of a pulling board; the pulling board is hinged on the trailer body via the pin, the lower end of the pulling board is hinged with an adjustable rod, and the upper end of the adjustable rod is hinged on the upper end of a long pulling board, and the lower end of the adjustable rod is connected with a shaft rod; two ends of the shaft rod are respectively connected with a short pulling board, and the other ends of two short pulling boards are hinged with a braking pulling thread with horseshoe. The braking mechanism for the small trailer can be braked while the traction car is braked and the trailer is disengaged from the traction car, the utility model is a necessary device for braking of the small trailer.

Description

Braking mechanism for small trailer

The utility model belongs to small-sized trailer brake device.

In vehicle ', braking mechanism is the necessary device of guarantee driving safety.Existing small-sized trailer is not owing to itself have stop mechanism, and after the tractor truck braking, because effect of inertia, trailer promotes tractor truck still to be continued to slide forward, and this has just prolonged the vehicle braked distance.After trailer breaks away from tractor truck, owing to park ground-surface gradient difference, can both cause that trailer slides automatically having under less external force effect or the vibration.This constitutes greatly harm to vehicle and pedestrains safety.Therefore provide a kind of mechanism that when tractor truck braking back and trailer disengaging tractor truck, can both make trailer produce brake action to be very important.

The purpose of this utility model provides a kind of mechanism that can satisfy above-mentioned requirements, makes it be applicable to the small-sized trailer that does not have brake equipment.

Technical solution of the present invention is a kind of small-sized trailer braking mechanism, comprises main tie, the subtie of the curved handle of band, eye hitch.Main tie is hinged by bearing pin and car body.Eye hitch is arranged on the subtie front end.The subtie of the curved handle of band is by sliding sleeve, and plate washer cushions retracing spring and is placed in the cavity of main tie.The curved pommel of subtie is articulated in the arm-tie upper end by bearing pin, and its lower end is hinged by bearing pin and adjusting lever one end.The arm-tie mesopore is hinged with the bearing pin that is fixed on the car body.The adjusting lever other end is articulated in long arm-tie upper end by bearing pin, and its lower end and axostylus axostyle join.Axostylus axostyle passes the axle sleeve in the bracing frame that joins with the trailer main shaft, and is free to rotate.The axostylus axostyle two ends are fixed with short arm-tie, and short arm-tie is hinged with the backguy of brake shoes respectively.Brake hubs is fixed on the wheel hub.

Small-sized trailer braking mechanism of the present utility model has simple in structure, consumes energy not, and braking effect is safe and reliable, is the indispensable brake gear of small-sized trailer.

Accompanying drawing 1 is the utility model integral structure longitudinal sectional drawing.

Accompanying drawing 2 is the utility model A-A section-drawing.

Accompanying drawing 3 is the utility model B-B section-drawing.

Accompanying drawing 4 is the utility model C-C section-drawing.

Accompanying drawings most preferred embodiment of the present utility model.The utility model comprises subtie 2, the eye hitch 3 of main tie 1, the curved handle of band.Main tie one end is hinged by bearing pin 7 and car body 10.Eye hitch and subtie 2, one ends join.The subtie of the curved handle of band cushions retracing spring 4 by sliding sleeve 5, and baffle plate 20 is arranged in the cavity of main tie.The curved pommel of subtie is by bearing pin 6 hinged arm-ties 8 upper ends, and the arm-tie lower end is articulated in adjusting lever 12 lower end arm-tie mesopores by on the bearing pin 9 hinged car bodies 10 by bearing pin 11.The adjusting lever upper end is by bearing pin 13 hinged long arm-ties 14 upper ends, and long arm-tie lower end is fixed in the middle of the axostylus axostyle 15.Axostylus axostyle can rotate in the axle sleeve in the bracing frame 17 that connects the trailer main shaft.Two short arm-ties 16 are fixed on the axostylus axostyle two ends, and two short arm-tie lower ends are hinged with brake shoes 18 by backguy 19.Brake hubs is arranged in the wheel hub of trailer.

Small-sized trailer braking mechanism of the present utility model, after the tractor truck braking, trailer is because effect of inertia continues to slide forward, and when eye hitch collided hauling hook, because the effect of impact force, eye hitch drove subtie and moves backward.The curved pommel of subtie promotes arm-tie and rotates around bearing pin, the arm-tie lower end affects the displacement forward of adjusting lever lower end, pulling long arm-tie in adjusting lever upper end rotates axostylus axostyle in axle sleeve, drive short arm-tie and the backguy of brake shoes simultaneously, makes the brake shoes embrace brake hubs and reaches the trailer brake purpose.Start tractor truck, become the collision of eye hitch and hauling hook into drawing back, under the effect of eye hitch, the curved handle of subtie, arm-tie, adjusting lever, long arm-tie, axostylus axostyle, short arm-tie and backguy, the brake shoes recovers normal condition.

When trailer broke away from tractor truck, main tie was rotated down around bearing pin under the effect of gravity.The curved pommel of subtie is hinged by bearing pin and arm-tie, and the arm-tie mesopore is articulated on the bearing pin that is fixed on car body.The break of the hinge-point of arm-tie mesopore, main tie and car body, the curved handle of subtie, these 3 constitute a triangle, according to triangle, article three, the length of side and its corresponding angles change and the principle of change, when main tie when bearing pin is rotated down, angle between main tie and the car body is diminished, and the length of side that its cooresponding arm-tie and curved handle form will shorten, subtie has very little displacement in the cavity of main tie, when culminating, curved handle will promote arm-tie and rotate around bearing pin.Under the drive of arm-tie, adjusting lever, long arm-tie, axostylus axostyle, short arm-tie, backguy, the repeated collision braking procedure makes the brake shoes embrace brake hubs, reaches the braking purpose.Lift main tie, the angle between car body and the main tie increases, and its corresponding sides increase, and under the effect of the curved pommel of subtie, makes arm-tie, adjusting lever, long arm-tie, axostylus axostyle, short arm-tie, backguy, brake shoes recover the normal position, and wheel hub is in motoring condition.

Main tie can be used shaped steel machine-shaping.Eye hitch, subtie, plate washer, bearing pin, adjusting lever, axostylus axostyle can be used garden steel machine-shaping.Arm-tie, long arm-tie, short arm-tie can be used urib founding moulding, spring, backguy buyable.

Claims

1, a kind of small-sized trailer is at tractor truck braking trailer braking mechanism, comprise main tie 1, the subtie 2 of the curved handle of band, eye hitch 3, main tie is hinged by bearing pin and car body 10, the curved subtie of band passes through buffering retracing spring 4, sliding sleeve 5, plate washer 20 is arranged in the cavity of main tie, eye hitch and subtie one end join, curved pommel of subtie and arm-tie 8 upper ends are hinged, the arm-tie mesopore is articulated on the car body 10 by bearing pin 9, it is characterized in that the be collided effect of power of eye hitch, subtie moves in the cavity of main tie backward, under the drive of the curved pommel of subtie, make arm-tie 8, adjusting lever 12, long arm-tie 14, axostylus axostyle 15, short arm-tie 16 is done corresponding displacement with the backguy 19 that is articulated in the brake shoes.

2, the braking mechanism of a kind of small-sized trailer after breaking away from tractor truck, comprise main tie 1, the subtie 2 of the curved handle of band, eye hitch 3, subtie is by buffering retracing spring 4, sliding sleeve 5, plate washer 20 is arranged in the cavity of main tie, the curved pommel of subtie is articulated in arm-tie 8 upper ends by bearing pin 6, the arm-tie mesopore is articulated on the car body 10 by bearing pin 9, it is characterized in that main tie and car body hinge-point, arm-tie mesopore and car body hinge-point, the break of the curved handle of subtie, these 3 constitute a triangle, when trailer breaks away from tractor truck, under the effect of gravity, main tie is rotated down the angle that makes between main tie and car body around bearing pin and diminishes, shorten on its cooresponding limit, under the drive of the curved handle of subtie, makes arm-tie 8, adjusting lever 12, long arm-tie 14, axostylus axostyle 15, lack arm-tie 16 and be articulated in brake shoes backguy 19 and do corresponding displacement.