CN2362755Y

CN2362755Y - Hand controlled emergency brake device for car

Info

Publication number: CN2362755Y
Application number: CN 98231707
Authority: CN
Inventors: 张宗箭; 张宗权
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-22
Filing date: 1998-11-22
Publication date: 2000-02-09
Anticipated expiration: 2008-11-22

Abstract

The utility model relates to a hand control emergency brake for automobiles, which is composed of a draw rod (1), a bracket (2), a bar stay (3), a button (4), a driving detent (5), a driving detent axis (6), a stop detent (7), a stop detent axis (8), a ratchet (9), a reel (10), a main shaft (11), a support seat (12), a drawn wire (13), a drawn wire lever (14), a drawn wire lever shaft (15), drawn wire positioning racks (16) and (17), a drawn wire sleeve pipe (18), steel wire ropes (19) and (20), a rope hole (21), a stop detent return spring (22), pulley wheels (23) and (24), and a back wheel adjusting arm (25). The utility model has the advantages of simple structure, low fabrication cost and large brake force, so the utility model can satisfy the force source requirement for emergency braking in automobile running. The utility model also has the advantages of reliable work and simple operation, Besides, the utility model can be widely applied to various automobiles, and can control the balance of brake force between the back wheels to avoid the braking deby tion. The utility model can regulate and control the size of the brake force of the back wheels to enable the automobile to keep stable speed when the automobile runs down on a long slope. In addition, the utility model can prevent the automobile from generating the sideslip when the bank wheels are braked to unable to move, and can also be used as a parking brake.

Description

The automobile hand control emergency brake device

The utility model relates to a kind of automobile hand control brake equipment.

Brake system is an important component part of automobile.It directly influences the driving safety of automobile.Along with the development of domestic and international motor transport service, guarantee that traffic safety has caused the common concern of the whole society, the requirement of automobile brake perfrmance and brake system structure there is the trend that progressively improves.The compact car of China mainly contains east wind, liberation two major types, and its brake system is equipped with compression air brake and pulls braking two covering devices.Air braking systems is used for service brake, pulls braking and is used to make automobile (to comprise on the slope) in the original place reliably to park.When the Pneumatic braking system et out of order, when taking place as situations such as pipeline leakage, Air compressor damage, master cylinder damage, drive link connecting pin come off, available holding brake device is done emergency brake.

Holding brake device braking transmission output shaft, its advantage are that lock torque passes to wheel after main reduction gear amplifies, thereby satisfy easily and handle the little requirement of hand-power.But as emergency stopper the time, often cause the transmission shaft overload, cause parts such as damaging transmission shaft.Owing to reasons such as holding brake device maintenance inconvenience, cause usefulness to descend easily, influence the braking during standstill ability.Therefore, holding brake device is not the ideal device of emergency brake.At present, part automobile (as high-grade bus) is equipped with the powerful compression spring emergency brake device that mechanical force source is provided.When air pressure was lower than certain value (as 0.4MPa), brute spring was upheld, and promoted rear wheel brake and realized emergency brake.The advantage of this device is that air pressure is crossed autobrake stagnation of movement when low, and its shortcoming is that maintenance, the maintenance of giving vehicle are simultaneously made troubles, so widespread usage not.

In order to remedy the deficiency of above-mentioned brake equipment, the simple and practical brake equipment of the utility model design one cover both can be used as emergency brake, also can doublely do braking during standstill.

The technical solution of the utility model is: pull mechanical driving mechanism with a cover and be attached on the rear wheel brake of compression air brake, this mechanism is by pull bar, support, strut, button, active ratchet and initiatively pawl axis, detent and detent axle, ratchet, reel, main shaft, bearing, wire drawing, wire drawing lever and wire drawing lever shaft, wire drawing locating rack, wire drawing sleeve pipe, steel rope, rope hole, detent retracing spring, pulley, trailing wheel adjusting arm are formed.With hand application of force on pull bar, ratchet and reel are rotated, cause steel rope to seesaw around reel, spur pulley with the whole piece steel rope seesaws thereupon, by the trailing wheel adjusting arm braking force biography is caused on the rear wheel brake again.

Advantage of the present utility model is outstanding: simple in structure, cheap; Braking force is big, the power source needs of emergency brake in the time of can satisfying running car fully, regulation according to type car production producers such as east wind, liberation, the normal brake application air pressure of running car is 0.8MPa, by this calculation of pressure, two effective thrust that pneumatic wheel cylinder produced on the rear wheel brake are approximately more than 600 kilogram, apply 20 kilograms power as giving pull bar of the present utility model, by the boosting function of this device, the thrust that can produce more than 780 kilogram is on rear wheel brake; Reliable operation, easy and simple to handle; Can be widely used in all kinds of automobiles; The balance of may command both sides rear-wheel braking force prevents braking deviation; The size of adjustable rear-wheel braking force makes automobile keep stabilizing speed when lower long slope, and can prevent that trailing wheel is seized and break away; Can doublely do Parking Brake.Weak point is that the reaction time is slightly longer than dynamic brake.

Fig. 1 is the utility model structural representation.As shown in the figure, the utility model is made up of pull bar (1), support (2), strut (3), button (4), active ratchet (5), active pawl axis (6), detent (7), detent axle (8), ratchet (9), reel (10), main shaft (11), bearing (12), wire drawing (13), wire drawing lever (14), wire drawing lever shaft (15), wire drawing locating rack (16), (17), wire drawing sleeve pipe (18), steel rope (19), (20), rope hole (21), detent retracing spring (22), pulley (23), (24), trailing wheel adjusting arm (25).Pull bar (1) is tubular and is fixed on the support (2).One end of support (2) is movably connected in main shaft (11) and goes up and can rotate in vertical plane around main shaft (11).Strut (3) is arranged in the tube of pull bar (1), and its top links to each other with button (4), the other end and the initiatively lower end flexible connection of ratchet (5).Button (4) is a pull back spring, and the cover string is on the top of strut (3), and its end is connected the top of pull bar (1), and the other end links to each other with the end of strut (3).Initiatively pawl axis (6) is installed and is connected on the support (2), and initiatively ratchet (5) can rotate on vertical plane around active pawl axis (6).Detent axle (8) is installed the top that is connected bearing (12), and detent (7) can rotate in vertical plane around detent axle (8).The upper end of detent (7) is connected with wire drawing (13), and its underpart links to each other with an end of detent retracing spring (22).Ratchet (9), reel (10) are welded as a whole, and axis coinciding can rotate in vertical plane around main shaft (11).Main shaft (11) is installed on the bearing (12).Wire drawing (13) one ends link to each other with wire drawing lever (14), and the other end links to each other with the upper end of detent (7), and wire drawing (13) is enclosed within the wire drawing sleeve pipe (8).The fulcrum of wire drawing lever (14) is fixedly connected on the wire drawing lever shaft (15), wire drawing lever shaft (15) is installed in an end of pull bar (1), and can in vertical plane, rotate, wire drawing locating rack (16) is fixedly mounted on the pull bar (1), and wire drawing locating rack (17) is fixedly mounted on the top of bearing (12).Rope hole (21) is positioned on the reel (10), and an end of steel rope (19) is connected in the reel (10), passes from rope hole (21), passes car floor, walks around pulley (23), and the other end is fixed on the proper site under the car floor.Steel rope (20) is walked around pulley (24), and its two ends are connected to the upper end of two trailing wheel adjusting arms (25).The brachium of trailing wheel adjusting arm (25) is longer than the brachium of adjusting arm of the prior art.

Leading portion of the present utility model is placed in the automobile cab, and steel rope (19) passes to the back by the fixed pulley that is fixed on the vehicle frame.When using this device, need only upwards pull pull bar (1) with hand, ratchet (9) and reel (10) rotate counterclockwise around main shaft (11) thereupon, cause steel rope (19) to move around reel (10), pulling steel rope (20) travels forward, and draws back trailing wheel adjusting arm (25), makes the brake lever rotation, brake shoe brake cheek opens, the trailing wheel braking.During operation, need only upwards spur pull bar continuously (1) twice, automobile brake is stopped.During brake off, press the button (4) earlier, initiatively ratchet (5) opens, pull bar (1) is pulled, release button (4) upwards pull pull bar a little, press wire drawing lever (14), detent (7) opens, and puts down pull bar (1), and reel (10) clockwise rotates thereupon, steel rope (19) unclamps a bit, the openhanded wire drawing lever (14) of opening.Repeat once, steel rope loosens again again, and braking is removed fully.

Claims

1, the automobile hand control emergency brake device, it is characterized in that by pull bar (1), support (2), strut (3), button (4), active ratchet (5), active pawl axis (6), detent (7), detent axle (8), ratchet (9), reel (10), main shaft (11), bearing (12), wire drawing (13), wire drawing lever (14), wire drawing lever shaft (15), wire drawing locating rack (16), (17), wire drawing sleeve pipe (18), steel rope (19), (20), rope hole (21), detent retracing spring (22), pulley (23), (24), trailing wheel adjusting arm (25) is formed, pull bar (1) is tubular and is fixed on the support (2), one end of support (2) is movably connected in main shaft (11) and goes up and can rotate in vertical plane around main shaft (11), strut (3) is arranged in the tube of pull bar (1), its top links to each other with button (4), the other end and the initiatively lower end flexible connection of ratchet (5), button (4) is a pull back spring, the cover string is on the top of strut (3), its end is connected the top of pull bar (1), the other end links to each other with the end of strut (3), initiatively pawl axis (6) is installed and is connected on the support (2), initiatively ratchet (5) can rotate on vertical plane around active pawl axis (6), detent axle (8) is installed the top that is connected bearing (12), detent (7) can rotate in vertical plane around detent axle (8), the upper end of detent (7) is connected with wire drawing (13), its underpart links to each other with an end of detent retracing spring (22), ratchet (9), reel (10) is welded as a whole, axis coinciding, can in vertical plane, rotate around main shaft (11), main shaft (11) is installed on the bearing (12), wire drawing (13) one ends link to each other with wire drawing lever (14), the other end links to each other with the upper end of detent (7), wire drawing (13) is enclosed within the wire drawing sleeve pipe (8), the fulcrum of wire drawing lever (14) is fixedly connected on the wire drawing lever shaft (15), wire drawing lever shaft (15) is installed in an end of pull bar (1), and can in vertical plane, rotate, wire drawing locating rack (16) is fixedly mounted on the pull bar (1), wire drawing locating rack (17) is fixedly mounted on the top of bearing (12), rope hole (21) is positioned on the reel (10), one end of steel rope (19) is connected in the reel (10), from rope hole (21), pass, pass car floor, walk around pulley (23), the other end is fixed on the proper site under the car floor, steel rope (20) is walked around pulley (24), and its two ends are connected to the upper end of two trailing wheel adjusting arms (25).