CN2056403U - Urgent brake device for wheel (type) transportation - Google Patents

Abstract

The utility model discloses an urgent brake device for wheel-typed traffic transport tools, comprising a main strutbeam, a friction block, a pull rod, a pre-tightening spring, a ring-shaped spring, a retracting motor, a steel wire rope, a limit switch, a main and a subsidiary supporting axles, a main and a subsidiary supporting frame, etc. The utility model which is arranged under the girder of a vehicle can be widely used for wheel-typed transportation tools, such as various vehicles, motorcycles, trains, air crafts, etc. After the utility model is adopted, the braking distance is less than one half of the original braking distance, and the driving safety of the vehicle is highly improved; meanwhile, the wear degree of the rear wheel of the vehicle when the vehicle brakes in the old time is reduced, and the service life of the vehicle is extended.

Description

Urgent brake device for wheel (type) transportation

Wheeled transport facility emergency brake arrangement, the used brake gear of known transport facility generally has two covers, at once vehicle brake (foot brake) and stop device (hand brake device).

Service brake device mechanism is: glancing impact, the driver depresses brake pedal, through the effect of brake actuating system, make to be contained in the wheel and with wheel base plate bonded assembly brake shoe brake cheek and open, and presses to rotating, with wheel rate bonded assembly brake wheel.Owing to be subjected to the effect of the friction moment opposite (lock torque) on the wheel, just force power actuated vehicle to slow down, until stopping with hand of rotation.And stop device is just to use after stopping.

Be expert under the effect of vehicle brake the maximum braking force P that car load produces _M=G ∮; Wherein, G is the gross weight of vehicle and institute's cargo, and ∮ is the adhesion value between wheel tyre and road surface.But G and ∮ are certain concerning each concrete vehicle, thus to improve brake efficiency promptly shorten braking distance under known brake gear effect no longer may.This has just caused following shortcoming; Under the higher or heavily stressed situation of car speed, braking distance is long, as liberation CA141, at per hour 50 kilometers, braking distance is about 20 meters under the fully loaded situation, and this just easily causes a traffic accident, often cause car crash, all cause tremendous loss for country and individual.

Task of the present utility model is: in order to overcome the shortcoming of above-mentioned known brake gear, to shorten stopping distance.Simultaneously, solve the extreme abrasion of rear tyre when emergency brake, improve its service life.

This emergency brake arrangement is under the prerequisite that keeps former brake gear with the essential distinction of known brake gear, installs a cover brake gear additional.Former brake gear uses as brake generally speaking, and this brake gear is in case of emergency, uses with former brake gear interlock.It is contained in the crossbeam bottom before the vehicle rear wheel.

Other advantages of the present utility model and minutia will be learnt will and describing from the following drawings, and with the example form embodiment of the utility model on automobile are described purely.Accompanying drawing is:

Fig. 1 is an assembling front view.

Fig. 2 is the front view of unitor 4.

Fig. 3 is the left view of unitor 4.

Fig. 4 is the assembly drowing of unitor 18.

Fig. 5 is the birds-eye view of unitor 18.

Fig. 6 is the front view of main bearing support assembly.

The birds-eye view of Fig. 7 master's bearing support assembly.

Fig. 8 is the circuit control system scheme drawing.

Fig. 9 is the control system block scheme.

Fig. 1 is an assembling front view, and it represents that main strutbeam 16 and unitor 18 lean on axle 17 hinged, and unitor 18 other ends are connected with pull bar 20 by bolt 25.Suit the preloading spring 8 of certain predetermincd tension between unitor on the pull bar 20 18 and secondary bolster 9, and the upper end of pull bar 20 is sleeved on 9 li of secondary bolsters.Between secondary bolster 9 and pull bar 20 bead topmost annual spring 10 is housed.The lower end of main strutbeam 16 is equipped with and is used for the friction shoe 19 that contacts with the road surface, and the upper end of main strutbeam 16 links to each other with unitor 4.Unitor 4 is fitted with in the main bolster 1, and the upper end of unitor 4 is fixing by pin 5, is also adorning the annual spring 3 of vibration damping between the lower end of unitor 4 bead and main bolster 1.

Long and two-short dash line is emergency brake arrangement position in the normal state among Fig. 1, and it is by limit switch 7 decisions, and the long and two-short dash line place that is remained among Fig. 1 by lock key 12 is common state.K among Fig. 1 shows that to view in parallel use of two cover emergency brake devices arranged on automobile.Two 16 of main strutbeams have connecting rod 21 to link to each other.

Fig. 2 and Fig. 3 are the structural representation of unitor 4.Figure 4 and 5 are the assembly drowing of unitor 18.As seen from Figure 5, stay 5 to 10 cm distance to the lower end that is contained in the pull bar 20 on the unitor 18, do not interfere to guarantee that pull bar 20 turns an angle around axle 17 at axle 17.

Fig. 6 and Fig. 7 are the assembling situation of main bolster 1 and bearing support 2, and the steel plate 24 of reinforcement is arranged on the automotive frame 15, to guarantee that the unlikely crossbeam that makes is out of shape when emergency brake arrangement uses.

The assembling situation and the above-mentioned main bolster 1 of secondary bolster 9 and secondary bearing support 11 are similar with the assembling situation of main bearing support 2, can be with reference to Fig. 6,7.

By the control system block scheme of the circuit control system scheme drawing of Fig. 8 and Fig. 9 as can be known, the control process that puts down and pack up of emergency brake arrangement is as follows:

When driving, chaufeur is stepped on brake pedal 29 and before the position of long and two-short dash line, is not connected because the ef two ends in Fig. 8, so do not have electricity in the magnet coil 33, lock key 12 is mobile, makes this emergency brake arrangement still be in long and two-short dash line position among Fig. 1.At this moment the just brake shoe brake cheek that brake is worked, this promptly is the drag under the known general case.

If the situation is critical, chaufeur is trespassed position shown in the long and two-short dash line among Fig. 8 with brake pedal 29, by brake actuating system brake shoe brake cheek is opened, when being known drag, also force guide rod 30 to move to right, drive guide plate 31 and move to right, the ef two ends are connected, constitute the loop, just produce magnetic force in the magnet coil 33, make lock key 12 overcome the pressure of preloading spring 8 on the pressure of spring 34 and the pull bar 20 and move right.Like this, pull bar 20 promptly is not subjected to the constraint of lock key 12, moves down fast under the effect of the predetermincd tension of preloading spring 8, and promotes a main strutbeam 16 by unitor 18 and axle 17 and hurtle down around main bolster 1 and land.Because friction shoe 19 is subjected to the effect of road surface 22 friction force to make main strutbeam 16 continue to rotate relative to main bearing support 2 by main bolster 1, because of it makes trailing wheel be lifted away from road surface 22 than the touchdown point of trailing wheel to the long face of vertical distance of crossbeam.After this, because pull bar 20 retrained being rotated further of main strutbeam 16, and annual spring 3 and 10 is after further compression, just keeps forcing car retardation, up to stopping under the situation of an acute angle at main strutbeam 16 and crossbeam 15 along speed of a motor vehicle direction.

After the parking, under the power effect of dead weight of vehicle, trailing wheel just lands again.At this moment, if the driver decontrols brake pedal 29, brake pedal 29 is got back to the position I shown in Fig. 8 again under the effect of pull back spring R.Guide rod 30 moves to left under the effect of spring 32, makes the ef outage, and ab connects, thereby makes the gh two ends establish electricity, and the magnetic force of magnet coil 33 also disappears thereupon, and lock key 12 moves left to original position under the effect of spring 34.

Moreover, because 16 times backwardnesss of main strutbeam, make 36 of guide rods be subjected to the effect of spring 28 and move to left, drive guide plate 27 and move to left, circuit cd is connected.Given this ab the time, the equal conducting of cd begins to rotate so pack up motor 14, drives rolling wheel 26 rotation rolling steel ropes 13 main strutbeam 16 is risen.Main strutbeam 16 rises pull bar 20 by the effect of axle 17 and unitor 18 again, and backs down lock key 12.After pull bar 20 and lock key are in position among Fig. 8, be that the upper end bead is whole when moving past lock key 12 for pull bar 20, because main strutbeam 16 has been pushed down guide rod 36, it is moved to right, disconnect cd, pack up the motor 14 just stall of cutting off the power supply, and pull bar 20 owing to making whole device, the constraint that is subjected to lock key 12 is maintained at the position shown in the long and two-short dash line among Fig. 1, in order to using next time.

Rivet 6 is used to connect main bearing support 2 and secondary bearing support 11 and crossbeam 15 among Fig. 1.Pin 23 is used for fixing main bolster 1 among Fig. 6.Storage battery 35 is used for packing up motor 14 and magnet coil 33 power supplies among Fig. 8.

Claims (6)

1, wheeled transport facility emergency brake arrangement, it is characterized in that: the lower end of main strutbeam 16 is connected with friction shoe 19, one end of its middle part and unitor 18 is hinged by axle 17, its upper end is connected with unitor 4, unitor 4 upper ends are inserted in the main bolster 1, be set with annual spring 3 on the unitor 4, the upper end of unitor 4 is fixing by pin 5, the lower end of pull bar 20 is connected with unitor 18 by bolt 25, the upper end is inserted in 9 li of secondary bolsters, preloading spring 8 is equipped with at the middle part, and annual spring 10 has been adorned on top, and is main, secondary bolster 1 and 9 is contained in respectively and crossbeam 15 rigidly connected masters, secondary bearing support 2 and 11 li.

2, according to the emergency brake arrangement of claim 1, it is characterized in that: friction shoe 19 lower curtates prolong main strutbeam 16 directions must be greater than the vertical distance of friction shoe 19 lower curtates to crossbeam 15 to the distance of crossbeam 15.

3, according to the emergency brake arrangement of claim 1, it is characterized in that: lock key 12 is housed on the crossbeam 15 and packs up motor 14, on main bearing support 2, limit switch 7 is housed.

4, according to the emergency brake arrangement of claim 1, it is characterized in that: main bearing support 2 and secondary bearing support 11 and vehicle crossbeam 15 places that are attached thereto are provided with and strengthen steel plate 21.

5, according to the emergency brake arrangement of claim 1, it is characterized in that: annual spring 3 and 10 is made by spring steel.

6, according to the emergency brake arrangement of claim 1, it is characterized in that: during emergency braking, main strutbeam 16 and must not be greater than 90 degree along the angle of 15 on the crossbeam of speed of a motor vehicle direction.

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