CN2295641Y

CN2295641Y - Emergency unit of brake

Info

Publication number: CN2295641Y
Application number: CN 96247743
Authority: CN
Inventors: 邱炳生
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-06
Filing date: 1996-12-06
Publication date: 1998-10-28
Anticipated expiration: 2006-12-06

Abstract

The utility model relates to an emergency device of a brake. A pair of side surfaces of the device are provided with fan-shaped brake blocks which are respectively and symmetrically arranged on a large beam of a chassis, a long body is taken as a middle connecting piece between the beam and the brake blocks, the long body is provided with a long inclined hole which is connected with sliding shafts on the brake blocks, and the hanging stationary and the touchdown braking of the brake blocks are controlled by a control system. A starting handle in a cab is used for passing a force to a movable rod under the chassis through a lever under the action of human hands in order to cause the brake blocks to detach from the rod and touch the ground via suspension. The brake blocks make relative rearward shift with the forward running of a vehicle, and the vehicle can be forced to stop via small to large friction resistance generated gradually on the surface of a road.

Description

A kind of brake emergency facility

The utility model relates to a kind of brake emergency facility of vehicle

Known, the brake equipment basic setup two of automobile is at present overlapped, and the one, oil (gas) is stopped, and the 2nd, parking brake.Though have this two covers brake system, car under steam, and is often too fast because of the speed of a motor vehicle, proper two cover brake system brakings are ineffective, and even malfunctioning, so lead to traffic accident, caused great loss to lives and properties.

The purpose of this utility model is on the basis of the existing two cover brake system of automobile, sets up a cover brake emergency facility.This is a kind of emergency braking apparatus that has a style of one's own, need not oil, gas, electricity is power, and reliability is stronger, it is with the mechanical drive braking principle, can produce powerful friction drag to the road surface of travelling, make the vehicle can be out of service gradually when critical, to reach the purpose that reduces accident.

The purpose of this utility model is achieved in that the structure of this device by two longitudinal bodies, and a pair of brake shoes and maneuvering system are formed.Have the low horizontal elongated hole in high back before in the middle of the side of longitudinal bodies, whole two crossbeam downsides that vertically are fixed on vehicle chassis along dress, left-right symmetric is the intermediate connector of crossbeam and brake shoes.Brake shoes side outward appearance is fan-shaped, there is a slide-bar to be connected in the top with elongated hole, axle slides before and after Kong Zhongke flexibly, planar base in its lower end studs with one deck arc spring steel plate and one deck and spring plate brake facing of a size, whole height equals crossbeam to the ground-surface distance, also has 1-2 pin-and-hole in addition in the bottom.At ordinary times, the outstanding longitudinal bodies the place ahead of crouching under crossbeam of brake shoes is fixed in the portable bar insertion brake shoes bottom pin-and-hole by maneuvering system.Maneuvering system is made up of handle, rotating shaft, stop spring, a cover portable bar and one group of bar cover.Handle is the activation member of this device, be contained in the position that is easy to people's manual manipulation in the operator's compartment, handle top is connected with stop spring and rotating shaft, the bottom passes the operator's compartment base plate and cross bar central authorities connection connects, cross bar is mounted under the chassis and is in the portable bar front end of a cover symmetry, the cross bar two ends are porose, the perforation of portable bar head links, crossing the vent stem head fixes with nut and cross bar, appoint nut the place ahead also to be connected with stop spring, just as the automobile damper of lengthening, a whole set of portable bar is distributed under the sole from portable bar to the stop spring whole piece, support by one group of several bars cover, bar cover also plays directional tagging, makes its rear end bar head can be flexibly join this device when using with brake shoes bottom outlet bolt accurately as the bolt, only need spur handle by staff, portable bar is under the effect of power, the bar head can hightail pin-and-hole, and brake shoes is outstanding down according to deadweight thereupon, and the arc brake sheet of its bottom contacts to earth immediately, move this moment before the slide-bar of brake shoes upper end is along with vehicle and then relatively, up to the rear end that moves to elongated hole.Since hang down behind the height before the elongated hole after slide-bar is done relatively, move in, brake shoes also contract gradually square and ground-surface distance, and under the pressure of vehicle body deadweight, forcing arc spring steel plate and brake facing to be subjected to together to squeeze flattens, be subjected to squeeze in the process that flattens at this, friction drag must change from small to big, and vehicle also can slow down gradually, until out of service.

Owing to adopt technique scheme, when vehicle travels when needing sudden stop very fast, find that when chaufeur oil (gas) is stopped and parking brake is ineffective, when hopeless, start this device rapidly, driving can be avoided, and the distance of inertia impact can be shortened.Therefore this device can play the raising safety factor of travel, the effect that the minimizing accident takes place, and have simple in structure, easy to manufacture, can be not out of control, advantage such as convenient to operation.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the side schematic view of the utility model embodiment.

Fig. 2 is the A-A cutaway view of the utility model embodiment.

Fig. 3 is the maneuvering system structural representation of the utility model embodiment.

Among the figure 1, handle 2, rotating shaft 3, portable bar 4, bar cover 5, pike pole 6, pin-and-hole 7, slide-bar 8, longitudinal bodies 9, elongated hole 10, chassis ridgepole 11, road surface 12, brake shoes 13, spring plate 14, brake facing

Brake shoes in Fig. 1 (12) is along crouching at the downside of chassis crossbeam (10), and bottom pin-and-hole (6) is gone into by the rear end bar head bolt of portable bar (3) and fixed, and the slide-bar on the small end (7) passes elongated hole (9) and is in the front end in hole.As the longitudinal bodies (8) of crossbeam (10) and brake shoes (12) intermediate connector go up and crossbeam at the bottom of veneer fix, go to the bottom and parallel with elongated hole (9) gradient, and quite level and smooth, so that brake shoes (12) is sliding after normally doing relatively, not overbanking or stuck backward again.The gradient of elongated hole (9), be that the two ends discrepancy in elevation should be consistent with the gap between brake shoes (12) baseplane and the arc spring steel plate (13), like this when brake shoes (12) when doing displacement relatively backward, can shorten gradually and road surface (11) between distance, the gap between spring plate (13) and the brake shoes (12) is squeezed thereupon.When brake shoes (12) moved to elongated hole (9) rear end relatively, spring plate (13) was subjected to squeeze and flattens, thereby brake facing (14) road pavement (11) forms planar friction and produces very big friction drag.Being in the brake shoes shown in the dotted line of elongated hole (9) two ends among Fig. 1, is after the terminal bar head of portable bar (3) breaks away from pin-and-hole (6), the down outstanding scheme drawing that contacts to earth and slide to the rear end.Longitudinal bodies (8) also plays the effect of supporting and strengthening to chassis ridgepole (10) in addition, and its length is as the buffering journey of this device brake, should grow a little for well as far as possible.

In Fig. 2, brake shoes (12) go up end yoke with longitudinal bodies (8) clamp in the centre, and connect by slide-bar (7), all there is certain clearance at its movable position, and contact surface is all answered smooth smooth.Size at bottom spring plate (13) and brake facing (14) can be a bit larger tham brake shoes (12), with the friction face of increase with road surface (11).Brake shoes (12) can be solid, or for expendable weight, under the prerequisite of proof strength, also can make hollow.

In Fig. 3, handle (1) is provided in a side of in the operator's compartment, hold by stop spring, when staff overcame elastic force pulling handle (1), (seeing the dotted line position of handle among Fig. 1 (1)) was under the effect of rotating shaft (2) and lower end cross bar, the stop spring of portable bar (3) compression front end shifts forward, terminal thereupon bar head hightails pin-and-hole (6), and brake shoes (12) is promptly outstanding down to contact to earth, and has just finished the action of this device start-up operation.When staff release handle (1), under the contraction of three stop springs, handle (1) and portable bar (3) set back.Native system also be provided with (4) one groups in bar cover several, match with portable bar (3), bar is slided in cover flexibly, and can play guiding and supporting role.Before also having pike pole (5) to be contained in the bar cover of portable bar (3) rear end, make portable bar can more stablely tack brake shoes (12)

Other must suit with quantity, shape, the size of the bar head that pin-and-hole (6) matches, and guarantees under vehicle running state, brake shoes (12) can be fixed.

In addition, this device uses the back to restore for brake shoes (12), design specialized mechanism not, major cause is to consider its complexity and may not use always, and therefore, following way is adopted in the recovery of brake shoes (12), that is: vehicle is refunded certain distance, the front position that brake shoes (12) can be got back to elongated hole (9), with manually brake shoes (12) can being carried the downside that goes to chassis ridgepole (10) to the headstock direction, mobile pike pole (5) inserts pin-and-hole with the bar head (6).

Other it should be noted that a problem, can that is: two symmetrical brake shoes in force be synchronous? theoretically can synchronous brake, in practice because of the condition of road surface difference, its friction force may have some differences, but because brake shoes is to be contained in two root distances from little and near the crossbeam downside of axis, therefore, two outstanding down contacting to earth of brake shoes at a distance of very near, and at this moment brake shoes is be in chassis latter half of, even the friction force that both sides produce does not slightly wait, but car can not take place to problems such as sideslips, stop the car and at this moment importantly can meet an urgent need.

Claims

1, a kind of brake emergency facility, it is characterized in that by two longitudinal bodies, a pair of brake shoes and maneuvering system etc. cooperate formation, two longitudinal bodies (8) symmetry respectively are contained in bottom surface, two crossbeam middle parts of chassis, the low elongated hole (9) in high back before one is wherein arranged, the plane at its end parallels with the gradient of this hole (9), in brake shoes (12) upper end that links to each other with longitudinal bodies (8) slide-bar (7) is arranged, connect for running-fit with this hole (9), the bottom surface, lower end of brake shoes (12) studs with one deck arc spring steel plate (13) and friction lining (14), it is tiltedly poor that the maximum clearance that arc spring steel plate and brake shoes (12) baseplane forms equals elongated hole (9) two ends, its whole height should equal crossbeam to ground-surface distance, this suspension is static and take off bolt and contact to earth by the control of the maneuvering system that matches, friction lining after contacting to earth (14) can produce ascending friction force resistance when the vehicle preshoot, car is stopped.

2, device according to claim 1, it is characterized in that maneuvering system is made of cooperations such as being contained in the cover portable bar of one under operator's compartment inner handle (1) and the chassis (3), handle (1) top is connected and fixed by stop spring and rotating shaft (2), the bottom links to each other in the middle of passing the cross bar that the operator's compartment base plate enters chassis and portable bar (3) front end, this cross bar two ends are porose, portable bar (3) front end bar head passes from the hole, be running-fit, there is nut fastening outward, what link to each other with the nut dead ahead has stop spring (2 of quantity, left-right symmetric), portable bar (3) rear end bar head and pin-and-hole (6) bolt are joined, and it is static that brake shoes (12) can be hung, when staff pulling handle (1), the cross bar of bottom can drive portable bar (3) and compress stop spring forward and make parallel shifted, and back bar head is out of stock, make brake shoes (12) following outstanding brake.

3, device according to claim 2 is characterized in that the strut member of a cover portable bar (3) is a component cloth and is fixed on the bar cover (4) that can play the guiding role on the chassis frame, and bar can slide in cover flexibly.

4, according to claim 2,3 described devices, it is characterized in that before the last bar cover of portable bar (3) rear end, pike pole (5) being housed, can make the bar head stably tack brake shoes (12) at ordinary times, after brake shoes (12) is outstanding down, need to reset, the removable pike pole of staff (5) inserts pin-and-hole (6) with the bar head, and fixing brake shoes (12).