Heavy motor vehicle is braked synchronous forced cooling device
Technical field
The present invention relates to the synchronous forced cooling device of cooling device, especially the heavy motor vehicle glancing impact of the big heavy motor vehicle wheel hub of load carrying ability, brake equipment etc.
Background technology
Along with the building up in a large number and be open to traffic of high-grade highway, express highway, the speed of automobile is also more and more faster, and corresponding traffic safety accident also increases considerably, and has caused the heavy losses of people's safeties of life and property.For heavy motor vehicle, because load carrying ability is big, the braking force that when braking brake, needs is with regard to corresponding increase, and under at a high speed, carrying out braking brake just needs bigger braking force, and the friction force of generation is just bigger; Autotruck is in operation, especially in higher summer of temperature or road conditions are bad need frequently braking in because fricative heat energy raises part temperatures such as braking hub and tire, even overheated, brake equipment was lost efficacy, lead to a disaster; So to temperature rise, the problems of excessive heat of brake equipment, adopt the method for cold water spraying cooling again in the prior art, to braking spraying cooling water such as hub, tire to reduce its temperature.Be called " car side brake water-circulating cooling device " like name; The patent No. is the utility model patent of ZL97224538.3; And name is called " automotive brake hub, tire cooling and multi-functional spray thrower "; The patent No. is the disclosed automobile cold water of the utility model patent of a ZL03216391.6 spraying cooling device; Can above-mentioned position spray cooling have been solved owing to factors such as day heat, frequently brakings and make the overheated brake failure problems that cause of brake component such as braking hub, tire, made driving safer.
But prior art, the water spray cooling structure of load-carrying vehicle brake system generally all need chaufeur manually to open or close water injecting system.If chaufeur is careless and inadvertent; Need the highway section of frequently braking braking not open or in time do not open water injecting system in long descending or traffic congestion etc.; Can not in time cool off parts such as braking hub, brake facing, cause the heavy goods vehicles brake failure, cause braking failure; Gently then make drg by severe wear or damage, heavy then cause safety misadventure; If chaufeur is not in time closed water injecting system, cause cooling water expansion tank to flow out always, waste water resource, and also the water that flows out also pollutes road, causes the road surface wet and slippery, influences the cruising of vehicle, also is a potential potential safety hazard.So equipment water jetting cooler of the prior art can not carry out with drag basically synchronously, its cooling water expansion tank is exactly to open in advance always or is exactly behind drag, to open again, and can not be when heat is given birth in drag friction, just water spray cooling immediately; It can not reach best cooling performance, and the consumption of cooling water expansion tank is more, and cooling water expansion tank also pollutes road, causes the road surface wet and slippery, influences the cruising of vehicle.
Summary of the invention
The water injecting system that the present invention is directed to the load-carrying vehicle brake system of prior art can not carry out with drag synchronously; Can not be when heat be given birth in drag friction; Just water spray cooling immediately; Can not reach best cooling performance, and the more deficiency that waits of the consumption of cooling water expansion tank, a kind of synchronous forced cooling device of heavy motor vehicle glancing impact is provided.
Technical scheme of the present invention: heavy motor vehicle is braked synchronous forced cooling device; Comprise compressed air reservoir, water tank, braking main valve, pneumatic water valve, sprinkler, brake cylinder; Compressed air reservoir is connected with the braking main valve through tracheae; Water tank is transported to the heavy motor vehicle braking position that needs cooling through cooling water pipe with cooling water expansion tank, and the braking main valve is connected with brake cylinder through freeing pipe, and brake cylinder acts on heavy motor vehicle braking position; It is characterized in that: on the freeing pipe between braking main valve and the brake cylinder; Triple valve is set; One end of triple valve is connected with the delivery pipe of braking main valve, second end of triple valve and the plumbing connection of brake cylinder, and the 3rd end of triple valve is connected with pneumatic water valve on being arranged on cooling water pipe.
Further characteristic is: on the cooling water pipe of pneumatic water valve back, several cooled water distributors are set, draw some cooling distributive pipes through cooled water distributor, feed heavy motor vehicle braking position respectively.
Between water tank and compressed air reservoir, gas connection pipe is set, gives the water tank follow-up pressure.
On the cooling water pipe of pneumatic water valve back, be provided with water and use triple valve, with triple valve cooling water expansion tank is fed the braking position of the same vehicle bridge of the heavy motor vehicle left and right sides through water.
Heavy motor vehicle of the present invention is braked synchronous forced cooling device, and relative prior art has following characteristics:
1, can effectively guarantee the cooling performance of glancing impact, in the chaufeur drag, sprinkler can be opened automatically, to brake equipment water spray coolings such as braking hubs; When heat was given birth in drag friction, just water spray cooling immediately reached best cooling performance.
2, practice thrift cooling water expansion tank, reduce cooling water consumption; Prevent unnecessary cooling water pollution road, cause unfavorable phenomenons such as the road surface is wet and slippery.
The subjective factor of chaufeur was to the influence of brake system when 3, this device can prevent to drive; Prevent that chaufeur from needing the highway section of frequently braking braking not open water injecting system in long descending or traffic congestion etc.; Can not in time cool; Unfavorable phenomenons such as the heavy goods vehicles brake failure that causes, braking failure prevent drg by severe wear or damage, avoid brake equipment to lose efficacy and the safety misadventure that causes.
Description of drawings
Fig. 1 is that heavy motor vehicle of the present invention is braked synchronous forced cooling device structural representation.
The specific embodiment
In figure; Heavy motor vehicle of the present invention is braked synchronous forced cooling device; Comprise compressed air reservoir 1, water tank 2, braking main valve 3, brake cylinder 4; Compressed air reservoir 1, water tank 2 and braking main valve 3 all are original parts of heavy motor vehicle or device, and compressed air reservoir 1 is used to store the pressurized air of braking usefulness, and water tank 2 is used to store the water of cooling usefulness; Water tank 2 is transported to the braking positions such as vehicle brake drum that need cool off through cooling water pipe 5 with cooling water expansion tank, cools off to braking position water spray through water jet; Braking main valve 3 is brake activation valves of heavy motor vehicle, and braking main valve 3 is connected with brake cylinder 4 through freeing pipe 6, and brake cylinder 4 is arranged on the braking position of heavy motor vehicle; After brake pedal or hand brake lever are stepped on or depressed to chaufeur; Braking main valve 3 produces action; Gas acts on the brake cylinder 4 through freeing pipe 6; Brake cylinder 4 produces the braking position that braking force acts on heavy motor vehicles such as vehicle brake drum, brake facing, and compressed air reservoir 1 is connected with braking main valve 3 through tracheae 7, and the pressurized air that braking is needed feeds in the braking main valve 3.Above as prior art, do not do further description at this.
Improvement of the present invention; Be on the freeing pipe 6 between braking main valve 3 and the brake cylinder 4; Triple valve 8 is set; One end of triple valve 8 is connected with the delivery pipe of braking main valve 3, second end of triple valve 8 and the plumbing connection of brake cylinder 4, and the 3rd end of triple valve 8 is connected with pneumatic water valve 9 on being arranged on cooling water pipe 5; When 3 actions of braking main valve; The high pressure brake gas that braking main valve 3 produces is through the shunting of triple valve 8, and a part acts on the brake cylinder 4 through freeing pipe 6, and brake cylinder 4 produces braking force and acts on braking positions such as vehicle brake drum, brake facing through cam, brake shoe brake cheek; Produce brake; Until stopping, a part acts on the pneumatic water valve 9 simultaneously, through pneumatic water valve 9 cooling water pipe 5 is opened with car retardation; Make the cooling water expansion tank in the water tank 2 be transported to the braking positions such as vehicle brake drum that need cooling through cooling water pipe 5, to the outside face water spray cooling of braking position.On the cooling water pipe 5 of pneumatic water valve 9 back, be provided with water with triple valve 10, with triple valve 10 cooling water expansion tank is fed the braking position of the same vehicle bridge of the heavy motor vehicle left and right sides through water, spray water and cool off in the braking position of both sides to the left and right.
Bigger in order to guarantee the pressure in the water tank 2; Guarantee that cooling water pipe 5 is unimpeded; Between water tank 2 and compressed air reservoir 1, gas connection pipe 11 is set; Part pressure gas in the compressed air reservoir 1 is fed in the water tank 2, guarantee that its pressure is enough big, satisfy the cooling water expansion tank proper flow, to the needs of brake equipment water spray cooling.
Consider that heavy motor vehicle has the many bridges of forward and backward bridge and front and back usually; 4,6,8 even more tire are arranged, and corresponding have 4,6,8 even more brake the position, needs simultaneously the cooling water expansion tanks in the cooling water pipe 5 are transported to each braking position of vehicle; On the cooling water pipe 5 in the drawings; Behind the pneumatic water valve 9 cooled water distributor 12 being set there are several apopores, is equivalent to several threeways or four way valve, draws some cooling distributive pipes 51 through cooled water distributor 12; Feed each braking position of load-carrying vehicle respectively; In drag, to each braking position water spray cooling of vehicle, realize the synchronous forced cooling at braking position simultaneously.Filter 13 is set on cooling water pipe 5, filters the cooling water expansion tank that passes through.
Heavy motor vehicle of the present invention is braked synchronous forced cooling device; When braking main valve 3 produced action, the brake gas part that braking main valve 3 produces acted on the brake cylinder 4 through freeing pipe 6, and brake cylinder 4 produces braking force and acts on braking positions such as vehicle brake drum, brake facing through cam, brake shoe brake cheek; Produce brake; Simultaneously, another part gas acts on the pneumatic water valve 9, and cooling water pipe 5 is opened; Make the cooling water expansion tank in the water tank 2 be transported to the braking positions such as vehicle brake drum that need cooling through cooling water pipe 5, to the cooling of braking parts site surface water spray; The present invention to the cooling of braking parts site surface such as vehicle brake drum water spray, realizes the synchronous forced cooling at braking position in drag.