CN203528464U - Trackless vehicle emergency braking system - Google Patents

Abstract

Provided is a trackless vehicle emergency braking system. The trackless vehicle emergency braking system is composed of a tapping fastener, a matched pin, an emergency braking rope, a tension spring, a pressing pad part of a chassis liner component, a bearing base part of the chassis liner component, a matched loop fastener, an emergency braking liquid path, a compressed spring, a pushing hydraulic cylinder, an ejecting pulley, a sliding plate, a horizontal-moving bearing, a pawl, a fork arm, a lower hook, an upper hook, a plate spring, a rocker arm, an axle structure and the like. The stressed end of a parking braking control lever is connected with one end of a main cable; the other end of the main cable is connected with a main connection point of the tapping fastener; the matched loop fastener is tightly attached to the lower portion of the tapping fastener; on the opposite side of the main connection point of the tapping fastener, the connection point of the matched loop fastener is connected with one end of the emergency braking rope. An output hydraulic pipeline of a braking air cylinder is connected with two paths including the braking liquid path used for conventional braking and the emergency braking liquid path. Under a vehicle chassis structure, an emergency braking execution assembly is installed on the bearing base part of the chassis liner component through the axle structure of the emergency braking execution assembly.

Description

A kind of free-wheel car emergency braking system

Technical field

The utility model relates to a kind of free-wheel car emergency braking manipulation-actuating system.

Background technology

Brake system is on vehicle, to use so that extraneous (being mainly road surface) applies certain power in some part of vehicle (being mainly wheel), thereby it is carried out to a series of special arrangements of forced brake to a certain degree.Brake system effect is: make vehicle in travelling carry out forced deceleration according to the requirement of chaufeur and even stop; Make the vehicle of stagnation of movement under different kinds of roads condition, (be included on ramp) steadily halt; Make the car speed of descent run keep stable.What vehicle was played to brake action can only be to act on vehicle and external force that direction is contrary with vehicle heading, and the size of these external force is all random, uncontrollable, so on vehicle, must install a series of special arrangements to realize above-mentioned functions.Existing vehicle braking system generally has two functions, in guaranteeing Vehicle Driving Cycle, can and guarantee by driver requested ramp to stop that vehicle reliably park, and they are called the service brake emergency brake system of unifying.Service braking system is in driving, use and by foot pedals, handle the system of implementing braking, and drg is normally arranged on all wheel hubs or wheel rim; Braking during standstill be after parking, prevent vehicle smooth and with and by hand, pull joystick and handle the system of implementing braking, drg is generally arranged on the transmission shaft after change-speed box or part-time case.The friction that this two function is by tire and road surface comes into force.For unconventional emergency braking, be to occur at once at emergency situation, chaufeur is foot pedals rapidly, and hand is pulled joystick and handled and implement braking.The friction that this mode remains by tire and road surface comes into force, and slides still longlyer, and driver and crew throw before still, do not have emergency effect rapidly, and can cause damage of components, especially before wheel system.Given this, urgently research and develop a kind of free-wheel car emergency braking manipulation-actuating system, not exclusively rely on the friction on tire and road surface and come into force, and can the utmost point in the short time with extremely short coasting distance, realize without before driver and crew, throw rapidly, safety, nondestructively stop.

Summary of the invention

For realize emergency situation rapidly, safety, harmless parking, the utility model provides a kind of free-wheel car emergency braking system.It consists of a minute clasp, fitting pin, emergency braking rope, extension spring, chassis cushion member pressure pad portion, chassis cushion member bearing support part, cooperation and-loop fastener emergency braking liquid road, stage clip, pushing tow hydraulic actuating cylinder, top block, slide plate, translation bearing, ratchet, yoke, lower draw-bar, upper hook, leaf spring, rocking arm and axle construction etc.The force side of parking brake lever is connected with one end of main push-towing rope rope, and the other end of main push-towing rope rope is connected with the main point of connection of minute clasp; Below minute clasp, be close to compound and cooperation and-loop fastener; At the main point of connection offside of minute clasp, coordinate the point of connection of and-loop fastener to be connected with one end of emergency braking rope.The output hydraulic pressure pipeline tap two-way of master brake cylinder, a road is braking liquid road, in order to conventional brake, another road is emergency braking liquid road.Below chassis of vehicle body structure, emergency braking is carried out member and is installed on chassis cushion member bearing support part with its axle construction.

The technical solution adopted in the utility model is:

Free-wheel car emergency braking system is divided into manipulation link gear and two, the mechanism that performs an action is, manoeuvre portion system comprises parking brake lever, main push-towing rope rope, minute clasp, fitting pin, braking during standstill manipulation hawser, the limit rope that resets, draws snap ring, slide opening, emergency braking rope, extension spring, cooperation and-loop fastener, pedal, braking liquid road, master brake cylinder, emergency braking liquid road, stage clip, pushing tow hydraulic actuating cylinder, top block, slide plate, translation bearing, upper hook; Enforcement division system comprises chassis cushion member pressure pad portion, chassis cushion member bearing support part, ratchet, yoke, lower draw-bar, leaf spring, rocking arm and axle construction.

The force side of parking brake lever is connected with one end of main push-towing rope rope, and the other end of main push-towing rope rope connects with the main point of connection of minute clasp and is connected; The main point of connection offside that divides clasp, two minutes point of connection of minute clasp connect respectively two braking during standstills and handle hawsers.Below minute clasp, be close to compound and cooperation and-loop fastener; At the main point of connection offside of minute clasp, coordinate the point of connection of and-loop fastener to be connected with one end of emergency braking rope.

The stress point of pedal is connected with the piston rod of master brake cylinder by rocking bar; The output hydraulic pressure pipeline tap two-way of master brake cylinder, a road is braking liquid road, in order to conventional brake, another road is emergency braking liquid road, in order to emergency braking.

Below chassis of vehicle body structure, being close to attaching has chassis cushion member pressure pad portion, carries out installation and the work of member in order to emergency braking; The rear pars infrasegmentalis of chassis cushion member pressure pad portion is shaped with chassis cushion member bearing support part, in order to emergency braking to be installed, carries out member; Emergency braking is carried out member and is installed on chassis cushion member bearing support part with its axle construction.

Operator's compartment left-front corner at chassis structure is offered a slide opening, in order to smooth, through reset limit rope jam, draws snap ring.

Working process and the kinematic principle of technical solutions of the utility model are:

When vehicle is when driving states needs emergent stopping, under chaufeur is swift, step on plate, then on pull parking brake lever;

The piston rod pressurized of master brake cylinder, the hydraulic cavities internal pressure liquid of pushing master brake cylinder drives vehicle conventional brake by braking liquid road; Meanwhile, by emergency braking liquid road drive move → slide plate on the piston rod → top block of pushing tow hydraulic actuating cylinder be subject to ejection move with in the interlock of translation bearing → with the logical hole that is linked that coordinates and-loop fastener and divide clasp of wearing of move → fitting pin on the fitting pin of slide plate one;

Main push-towing rope rope is through a series of tensions, tightening process → cooperation and-loop fastener and minute flexible reach of the locked body of clasp formation, and two braking during standstills that are connected with minute clasp are handled hawser while tension, drive vehicle parking; Simultaneously, put → upper hook and the release of lower draw-bar dropout → leaf spring stored energy after the emergency braking rope tension → emergency braking rope being connected with cooperation and-loop fastener pulls the force side of the force side → upper hook of upper hook to overcome the pulling force forward swing of extension spring → upper force side of linking up with, bullet is put the emergency braking execution member → emergency braking execution member moment bottom that is positioned at front part of vehicle vehicle frame below, and the reset limit rope tension extension → emergency braking in contraction state is carried out the two antagonistic force gs of ratchet contact with road surface → road surface of moment to ratchet of member _bwith the resistance s of road surface to ratchet _bproduce simultaneously and increase, road surface is the friction force s to front-wheel to the antagonistic force of front-wheel and road surface _wFstart to reduce simultaneously; The antagonistic force g of road surface to ratchet _bwith the resistance s of road surface to ratchet _btransfer make a concerted effort to become the strong point at axle construction strong point O and shift braking force b; Car body inertia power v starts the conicity force consumption that supported point shifts braking force b, car body gravity g _vstart longitudinal component and the antagonistic force g of road surface to trailing wheel of supported some transfer braking force b _wBthe antagonistic force g of move after balance → body gravity starts → road surface to trailing wheel _wBwith the friction force s of road surface to trailing wheel _wBstart conicity force consumption that the supported point of increase → car body inertia power v shifts braking force b simultaneously and be the car body inertia v that makes a concerted effort _c; The car body inertia v that makes a concerted effort _cshift braking force b with the strong point and form again strong point braking b with joint efforts _c, longitudinal component transferance of this power in occupant gravity center of human body B → make occupant's human body overweight → human body is about the friction drag at seat, i.e. occupant's human body friction f _bstart to increase → consume occupant's human body force of inertia i _b;

If vehicle is carried out to push away before the axle construction of member and two ratchets are subject to respectively and carried out swinging under member with rear resistance → emergency braking and open greatly because inertia continues slide → emergency braking simultaneously, further stretch → Vehicular body front of reset limit rope is subject to emergency braking to carry out the axle construction support of member and raise up → vehicle two wheelies and leave the antagonistic force g of road surface → road surface to ratchet _bwith road surface, the resistance of ratchet is further increased, road surface is the friction force s to front-wheel to the antagonistic force of front-wheel and road surface _wFdisappear simultaneously; The antagonistic force g of road surface to ratchet _bwith the resistance s of road surface to ratchet _bthe transfer strong point of making a concerted effort to form at axle construction strong point O shift braking force b and increase; The conicity force that the supported point of car body inertia power v shifts braking force b further consumes, car body gravity g _vcomplete supported point shifts longitudinal component and the antagonistic force g of road surface to trailing wheel of braking force b _wBthe antagonistic force g of move → road surface to trailing wheel after institute's balance → body gravity is further _wBwith the friction force s of road surface to trailing wheel _wBthe conicity force of the simultaneously further supported some transfer of increases → car body inertia power v braking force b consume and and the car body inertia the becoming v that makes a concerted effort _cfurther reduce; The car body inertia v that makes a concerted effort _cshift the formed strong point braking of braking force b b with joint efforts with the strong point _cafter increasing also, turn, transferance is in occupant gravity center of human body B; Strong point braking is b with joint efforts _clongitudinal component b _cvact on occupant gravity center of human body B → occupant human body overweight → human body is about the friction drag at seat, i.e. occupant's human body friction f _bfurther increase → further consume occupant's human body force of inertia i _b; Strong point braking is b with joint efforts _cconicity force b _chact on occupant gravity center of human body B → consumption occupant human body force of inertia i _b;

Through the transients of above-mentioned man-machine control action and vehicle movement, the powerful inertia power of car body is carried out member by emergency braking and trailing wheel almost exhausts; If vehicle does not continue to slide because inertia exhausts, under emergency braking execution member, swinging is further opened greatly, causes car body further to be faced upward, spacing until reset limit rope is straightened; Now the powerful force of inertia of car body is all exhausted by emergency braking execution member and trailing wheel.

After car body inertia power is carried out member and trailing wheel and all exhausted by emergency braking, emergency braking can be removed; Chaufeur is put back to parking brake lever, decontrol again underfooting pedal → vehicle two trailing wheel brake offs, the force side of upper hook is retracted the force side forward swing of rear pendulum → upper hook by extension spring, the supported point of standby lodge → car body shifts the conicity force of braking force b and push up back → move backward → and emergency braking execution member starts backswing, and loosen two ratchets of disappear → emergency braking of the resistance sB execution member of ratchet simultaneously on progressively land → road surface of progressively reduce → two front-wheels of angle;

Chaufeur plucks out the snap ring that draws on left-front corner slide opening, then pull-up draws snap ring → reset limit rope to tighten up;

Chaufeur continues that pull-up draws the reset limit rope of snap ring → anxiety to drive to put on ratchet → emergency braking execution member and the antagonistic force that overcomes leaf spring progressively resets, on leaf spring accumulation of energy → lower draw-bar side swipe hasp, the accumulation of energy of hook → leaf spring finishes, emergency braking carry out member locate wait to put → vehicle enters state to be driven.

The beneficial effects of the utility model are:

Make full use of existing brake operating mechanism and chassis structure, avoided misoperation and hysteresis motion, without the extra training to driver and crew.Simple in structure, pure physical construction, thereby produce and install easily.Be independent of automotive power, driving system, steering swivel system etc., thereby other functions are had no effect; Supporting role due to emergency braking execution member of the present utility model, makes vehicle front-wheel separated with road surface, and the front-wheel while having avoided existing emergency braking and relevant parts and components damage; Meanwhile, car body is faced upward and is made after center of gravity to move, and driver and crew's force of inertia transfers to towards chassis direction by being parallel to chassis direction, has avoided throwing before human body.By reversing, make emergency braking carry out member backswing to failure state, vehicle drops to all tire and road surface contact condition by the state of raising up, then pull-up draws snap ring, makes emergency braking carry out member backswing to initial condition, and releasing emergency braking method is simple and easy.The emergency braking that the utility model provides is once onset, and two front-wheels have departed from road surface, thereby does not require that chaufeur both hands are not from bearing circle.

Accompanying drawing explanation

Fig. 1 is system interlink relational structure schematic diagram of the present utility model;

Fig. 2 is emergency braking actuating unit mounting structure upward view of the present utility model;

Fig. 3 is that emergency braking is carried out element structure front view;

Fig. 4 is that emergency braking is carried out element structure birds-eye view;

Fig. 5 is emergency braking initial time state of kinematic motion schematic diagram of the present utility model;

Fig. 6 is that the emergency braking of emergency braking initial time car body is carried out member assembled shaft strong point state of kinematic motion schematic diagram;

Fig. 7 is emergency braking initial time passenger state of kinematic motion schematic diagram;

Fig. 8 is that emergency braking of the present utility model faces end state of kinematic motion schematic diagram constantly;

Fig. 9 is that emergency braking faces the end emergency braking execution member assembled shaft strong point state of kinematic motion schematic diagram of car body constantly;

Figure 10 is that emergency braking faces end passenger's state of kinematic motion schematic diagram constantly;

Fig. 1～5, in 8: 1. parking brake lever, 2. main push-towing rope rope, 3. minute clasp, 4. fitting pin, 5. braking during standstill is handled hawser, 6. reset limit rope, 7. draw snap ring, 8. slide opening, 9. emergency braking rope, 10. extension spring, 11. chassis cushion member pressure pad portions, 12. chassis cushion member bearing support part, 13. coordinate and-loop fastener, 14. pedals, 15. braking liquid roads, 16. master brake cylinders, 17. emergency braking liquid roads, 18. stage clips, 19. pushing tow hydraulic actuating cylinders, 20. top blocks, 21. slide plates, 22. translation bearings, 23. ratchets, 24. yokes, 25. lower draw-bars, hook on 26., 27. leaf springs, 28. rocking arms, 29. axle construction.

In Fig. 2: 30. chassis structures.

In Fig. 5,6,8 and 9: g _bfor the antagonistic force of road surface to ratchet, s _bfor the resistance of road surface to ratchet, g _wFfor the antagonistic force of road surface to front-wheel, s _wFfor the friction force of road surface to front-wheel, O is the axle construction axle construction strong point, and b is that the strong point shifts braking force, and v is car body inertia power, g _vfor car body gravity, g _wBfor the antagonistic force of road surface to trailing wheel, s _wBfor the friction force of road surface to trailing wheel.

In Fig. 6,8 and 9: v _cfor car body inertia power car body inertia is made a concerted effort, b _cfor strong point braking is made a concerted effort.

In Fig. 7,10: i _bfor occupant's human body force of inertia, B is occupant gravity center of human body, f _bfor occupant's human body friction.

In Figure 10: b _cvfor longitudinal component, b _chfor conicity force.

The specific embodiment

Organization plan of the present utility model:

In the emergency braking actuating unit mounting structure upward view of the present utility model shown in the system interlink relational structure schematic diagram of the present utility model shown in Fig. 1 and Fig. 2:

The force side of parking brake lever 1 is connected with one end of main push-towing rope rope 2, and the other end of main push-towing rope rope 2 connects with the main point of connection of minute clasp 3 and is connected; The main point of connection offside that divides clasp 3, two minutes point of connection of minute clasp 3 connect respectively two braking during standstills and handle hawsers 5.

The stress point of pedal 14 is connected with the piston rod of master brake cylinder 16 by rocking bar; The output hydraulic pressure pipeline tap two-way of master brake cylinder 16, a road is braking liquid road 15, in order to conventional brake, another road is emergency braking liquid road 17, in order to emergency braking.

The hydraulic cavities of pushing tow hydraulic actuating cylinder 19 is connected in the outlet on emergency braking liquid road 17; The piston rod top of pushing tow hydraulic actuating cylinder 19 is equipped with top block 20, in order to skid pushing tow slide plate 21.Slide plate 21 is structure as a whole with fitting pin 4, and this integrative-structure forms minute clasp 3 and the structure that is linked that coordinates and-loop fastener 13 to coordinate with translation bearing 22, stage clip 18.

Below minute clasp 3, be close to compound and cooperation and-loop fastener 13; At the main point of connection offside of minute clasp 3, coordinate the point of connection of and-loop fastener 13 to be connected with one end of emergency braking rope 9; The other end of emergency braking rope 9 is connected to the force side of hook 26.The force side of upper hook 26 is connected to extension spring 10, spacing in order to guarantee the reset of upper hook 26.

Below chassis of vehicle body structure 30, being close to attaching has chassis cushion member pressure pad portion 11, carries out installation and the work of member in order to emergency braking; The rear pars infrasegmentalis of chassis cushion member pressure pad portion 11 is shaped with chassis cushion member bearing support part 12, in order to emergency braking to be installed, carries out member; Emergency braking is carried out member and is installed on chassis cushion member bearing support part 12 with its axle construction 29.

In the operator's compartment left-front corner of chassis structure, offer a slide opening 8, in order to smooth, through reset limit rope 6 jam, draw snap ring 7.

At the emergency braking shown in the system interlink relational structure schematic diagram of the present utility model shown in Fig. 1 and Fig. 3,4, carry out in element structure view: emergency braking is carried out member and consisted of ratchet 23, reset limit rope 6, yoke 24, lower draw-bar 25, leaf spring 27, rocking arm 28 and axle construction 29.End is puted forth effort in the emergency braking work that ratchet 23 is carried out member for emergency braking, in order to prick, grabs road surface, produces powerful counteraction braking force; Reset limit rope 6 is scalable hawser member, after removing at emergency braking, by pull-up, draw snap ring 7, pull-up emergency braking is carried out member and is resetted, when emergency braking is carried out the member bottom to maximum angle, spacing by drawing snap ring 7 and the jam of slide opening 8 and the limit for length of limit rope 6; Rocking arm 28 is that emergency braking carries out the structure principal arm beam of member, and its front end is divided into two yokes 24, is equipped with lower draw-bar 25 above front end, in order to upper hook 26 hasps; Rear end is shaped with axle construction 29, and axle construction 29 is made for one with rocking arm 28; The long tubular axle sleeve inner sleeve of axle construction 29 has major axis, in order to form axle normal-running fit with chassis cushion member bearing support part 12; In the rear end of rocking arm 28, the front upper side of axle construction 29, being close to attaching has leaf spring 27, in order to depress at the pad of chassis cushion member pressure pad portion 11, is bullet accumulation of energy under the work of rocking arm 28.

The technical solution of the utility model working process (as Fig. 1～4):

1. when vehicle is when driving states needs emergent stopping, under chaufeur is swift, step on plate 14, then on pull parking brake lever 1;

2. the piston rod pressurized of master brake cylinder 16, pushes the hydraulic cavities internal pressure liquid of master brake cylinder 16 by braking liquid road 15 driving vehicle conventional brakes; Meanwhile, by emergency braking liquid road 17 drive move → slide plate 21 on the piston rod → top block 20 of pushing tow hydraulic actuating cylinders 19 be subject to ejection move with in 22 interlocks of translation bearing → with the logical hole that is linked that coordinates and-loop fastener 13 and divide clasp 3 of wearing of move → fitting pin 4 on the fitting pin 4 of slide plate 21 one;

3. the flexible reach of locked body that main push-towing rope rope 2 forms through a series of tensions, tightening process → cooperation and-loop fastener 13 and minute clasp 3, handles hawsers 5 tensions simultaneously with dividing two braking during standstills that clasp 3 is connected, and drives vehicle parking, simultaneously, with coordinate emergency braking rope 9 tensions → emergency braking rope 9 that and-loop fastener is connected to pull the force side of the force side of upper hook 26 → above link up with 26 to overcome put → above to link up with behind the force side of the pulling force forward swing of extension spring 10 → above link up with 26 26 and lower draw-bar 25 dropout → leaf spring 27 stored energies releases, bullet is put the emergency braking execution member → emergency braking execution member moment bottom that is positioned at front part of vehicle vehicle frame below, reset limit rope 6 tension extension → emergency brakings in contraction state are carried out two ratchet contact with road surface → (the antagonistic force gs of (referring to Fig. 5～7) road surface to ratchet of 23 moments of member _bwith the resistance s of road surface to ratchet _bproduce simultaneously and increase, road surface is the friction force s to front-wheel to the antagonistic force of front-wheel and road surface _wFstart to reduce simultaneously, the antagonistic force g of road surface to ratchet _bwith the resistance s of road surface to ratchet _btransfer make a concerted effort to become the strong point at axle construction strong point O and shift braking force b, car body inertia power v starts the conicity force consumption that supported point shifts braking force b, car body gravity g _vstart longitudinal component and the antagonistic force g of road surface to trailing wheel of supported some transfer braking force b _wBthe antagonistic force g of move after balance → body gravity starts → road surface to trailing wheel _wBwith the friction force s of road surface to trailing wheel _wBstart conicity force consumption that the supported point of increase → car body inertia power v shifts braking force b simultaneously and be the car body inertia v that makes a concerted effort _c, the car body inertia v that makes a concerted effort _cshift braking force b with the strong point and form again strong point braking b with joint efforts _c, longitudinal component transferance of this power in occupant gravity center of human body B → make occupant's human body overweight → human body is about the friction drag at seat, i.e. occupant's human body friction f _bstart to increase → consume occupant's human body force of inertia i _b),

4., if vehicle is carried out to push away before the axle construction 29 of member and two ratchets 23 are subject to respectively and carried out swinging under member with rear resistance → emergency braking and open greatly because inertia continues slide → emergency braking simultaneously, reset limit rope 6 further stretchings → Vehicular body front is subject to axle construction 29 supports of emergency braking execution member and raise up → vehicle two wheelies and leave road surface → (the antagonistic force g of (referring to Fig. 5,8～10) road surface to ratchet _bwith road surface, the resistance of ratchet is further increased, road surface is the friction force s to front-wheel to the antagonistic force of front-wheel and road surface _wFdisappear simultaneously; The antagonistic force g of road surface to ratchet _bwith the resistance s of road surface to ratchet _bthe transfer strong point of making a concerted effort to form at axle construction strong point O shift braking force b and increase; The conicity force that the supported point of car body inertia power v shifts braking force b further consumes, car body gravity g _vcomplete supported point shifts longitudinal component and the antagonistic force g of road surface to trailing wheel of braking force b _wBthe antagonistic force g of move → road surface to trailing wheel after institute's balance → body gravity is further _wBwith the friction force s of road surface to trailing wheel _wBthe conicity force of the simultaneously further supported some transfer of increases → car body inertia power v braking force b consume and and the car body inertia the becoming v that makes a concerted effort _cfurther reduce; The car body inertia v that makes a concerted effort _cshift the formed strong point braking of braking force b b with joint efforts with the strong point _cafter increasing also, turn, transferance is in occupant gravity center of human body B; Strong point braking is b with joint efforts _clongitudinal component b _cvact on occupant gravity center of human body B → occupant human body overweight → human body is about the friction drag at seat, i.e. occupant's human body friction f _bfurther increase → further consume occupant's human body force of inertia i _b; Strong point braking is b with joint efforts _cconicity force b _chact on occupant gravity center of human body B → consumption occupant human body force of inertia i _b);

5. through the transients of above-mentioned man-machine control action and vehicle movement, the powerful inertia power of car body is carried out member by emergency braking and trailing wheel almost exhausts; If vehicle does not continue to slide because inertia exhausts, under emergency braking execution member, swinging is further opened greatly, causes car body further to be faced upward, spacing until reset limit rope 6 is straightened; Now the powerful force of inertia of car body is all exhausted by emergency braking execution member and trailing wheel.

6., after car body inertia power is carried out member and trailing wheel and all exhausted by emergency braking, emergency braking can be removed; Chaufeur is put back to parking brake lever 1, decontrol again underfooting pedal 14 → vehicle two trailing wheel brake offs, the force side of upper hook 26 is retracted rear pendulum → above link up with 26 force side forward swing by extension spring 10, standby lodge → (the supported point of (referring to Fig. 8) car body shifts the conicity force of braking force b and push up back → move backward → and emergency braking execution member starts backswing, the resistance s of progressively land → road surface of progressively reduce → two front-wheels of angle to ratchet _btwo ratchets 23 of the member of disappearance → emergency braking execution simultaneously loosen);

7. chaufeur plucks out and draws snap ring 7 on left-front corner slide opening 8, then pull-up draws snap ring 7 → reset limit rope 6 to tighten up;

8. chaufeur continues that pull-up draws the reset limit rope 6 of snap ring 7 → anxiety to drive to put on ratchet 23 → emergency brakings execution members and the antagonistic force that overcomes leaf spring 27 progressively resets, on 25 side swipes of leaf spring 27 accumulation of energys → lower draw-bar hasp, link up with 27 accumulation of energys of 26 → leaf spring and finish, emergency braking carry out member locate wait to put → vehicle enters state to be driven.

The beneficial effects of the utility model:

1. make full use of existing brake operating mechanism and chassis structure, avoided misoperation and hysteresis motion, and do not need driver and crew to do extra training;

2. simple in structure, pure physical construction, thereby production is installed easily;

4. be independent of automotive power, driving system, steering swivel system etc., thereby other functions are had no effect;

5. due to emergency braking of the present utility model, carry out the supporting role of member, make vehicle front-wheel separated with road surface, the front-wheel while having avoided existing emergency braking and relevant parts and components damage; Meanwhile, car body is faced upward and is made after center of gravity to move, and driver and crew's force of inertia transfers to towards chassis direction by being parallel to chassis direction, has avoided throwing before human body.

6. by reversing, make emergency braking carry out member backswing to failure state, vehicle drops to all tire and road surface contact condition by the state of raising up, then pull-up draws snap ring 7, makes emergency braking carry out member backswing to initial condition, and releasing emergency braking method is simple and easy.

7. the emergency braking that the utility model provides is once onset, and two front-wheels have departed from road surface, thereby does not require that chaufeur both hands are not from bearing circle.

Claims (4)

1. a free-wheel car emergency braking system, is to form by handling link gear with two, the mechanism that performs an action, and it is characterized in that:

Manoeuvre portion system comprises parking brake lever, main push-towing rope rope, minute clasp, fitting pin, braking during standstill manipulation hawser, the limit rope that resets, draws snap ring, slide opening, emergency braking rope, extension spring, cooperation and-loop fastener, pedal, braking liquid road, master brake cylinder, emergency braking liquid road, stage clip, pushing tow hydraulic actuating cylinder, top block, slide plate, translation bearing, upper hook; Enforcement division system comprises chassis cushion member pressure pad portion, chassis cushion member bearing support part, ratchet, yoke, lower draw-bar, leaf spring, rocking arm and axle construction;

The force side of parking brake lever is connected with one end of main push-towing rope rope, and the other end of main push-towing rope rope is connected with the main point of connection of minute clasp; The main point of connection offside that divides clasp, two minutes point of connection of minute clasp connect respectively two braking during standstills and handle hawsers; Below minute clasp, be close to compound and cooperation and-loop fastener; At the main point of connection offside of minute clasp, coordinate the point of connection of and-loop fastener to be connected with one end of emergency braking rope;

The stress point of pedal is connected with the piston rod of master brake cylinder by rocking bar; The output hydraulic pressure pipeline tap two-way of master brake cylinder, a road is braking liquid road, in order to conventional brake, another road is emergency braking liquid road, in order to emergency braking;

Below chassis of vehicle body structure, being close to attaching has chassis cushion member pressure pad portion, carries out installation and the work of member in order to emergency braking; The rear pars infrasegmentalis of chassis cushion member pressure pad portion is shaped with chassis cushion member bearing support part, in order to emergency braking to be installed, carries out member; Emergency braking is carried out member and is installed on chassis cushion member bearing support part with its axle construction;

Operator's compartment left-front corner at chassis structure is offered a slide opening, in order to smooth, through reset limit rope jam, draws snap ring.

2. according to the free-wheel car emergency braking system shown in claim 1, it is characterized in that: the other end of emergency braking rope (9) is connected to the force side of hook (26); The force side of upper hook (26) is connected to extension spring (10), spacing in order to guarantee the reset of upper hook (26).

3. according to the free-wheel car emergency braking system shown in claim 1, it is characterized in that: emergency braking is carried out member and consisted of ratchet (23), reset limit rope (6), yoke (24), lower draw-bar (25), leaf spring (27), rocking arm (28) and axle construction (29).

4. according to the free-wheel car emergency braking system shown in claim 1 or 3, it is characterized in that: end is puted forth effort in the emergency braking work that ratchet (23) is carried out member for emergency braking, in order to prick, grab road surface, produce powerful counteraction braking force; Reset limit rope (6) is scalable hawser member, after removing at emergency braking, by pull-up, draw snap ring (7), pull-up emergency braking is carried out member and is resetted, when emergency braking is carried out the member bottom to maximum angle, spacing by drawing snap ring (7) and the jam of slide opening (8) and the limit for length of limit rope (6); Rocking arm (28) is that emergency braking carries out the structure principal arm beam of member, and its front end is divided into two yokes (24), is equipped with lower draw-bar (25) above front end, in order to upper hook (26) hasp; Rear end is shaped with axle construction (29), and axle construction 29 is made for one with rocking arm 28; The long tubular axle sleeve inner sleeve of axle construction 29 has major axis, in order to form axle normal-running fit with chassis cushion member bearing support part (12); Rear end in rocking arm (28), the front upper side of axle construction (29), being close to attaching has leaf spring (27), in order to depress at the pad of chassis cushion member pressure pad portion (11), is bullet accumulation of energy under the work of rocking arm (28).

Images