CN2430329Y - Safety protector for damage of brake oil and air pipeline - Google Patents

Abstract

The utility model relates to a safety protecting device for protecting brake oil and air pipe from damage, which is composed of a seat body (1) which is provided with an oil gas inlet (2), a channel (3), a voltage limiting pipe (4), an overflow pipe (5), a diversion pipe (8), a slide valve body (9), a slide piece (15), a cutoff nozzle (10), a left and a right oil gas outlets (11) and (12). The utility model is suitable for vehicles which are provided with various hydraulic or pneumatic brake. Once the oil (air) soft pipe of certain wheel is broken, the soft pipe can automatically be closed dually by means of the slide valve body to stop oil supply while other wheels can implement normal braking. Besides, the utility model can be used for controlling brake time difference of front and rear wheels in order to make vehicle braking stable and reliable. The utility model is a product of new technology which can improve the existing brake performance and ensure driving safe.

Description

The safety guard of brake solution feed channel breakage

The utility model belongs to vehicle brake, be a kind ofly be used for pressure medium brake vehicle, when certain oil-air pressure flexible pipe of taking turns is damaged when leaking, still can keep the safety guard that all the other respectively take turns the normal braking function.

Water brake or pneumatic brake have been widely used on the various vehicles at present, its basic comprising is generally: the pressure oil (gas) that is provided by master cylinder, transfer to the front and back ends of car sedan-chair respectively through stereoplasm tube (routine copper pipe), and then the external hose that utilizes threeway transfer to respectively before liquid (gas) pressure operation element on the left and right wheels of (back), and then drive the brake facing of expanding shoe brake, make each wheel braking.Owing to have bumper (routine spring plate) to connect between each wheel and the car sedan-chair, in the vehicle ' process, there is the frequent vibration displacement between wheel and the car sedan-chair, therefore to the external hose of each wheel delivery pressure oil (gas), aging through long-term warpage fatigue and outside contamination, very easily produce crack or explosion, oil (gas) is constantly leaked, influence braking effect, perhaps make brake solution (gas) miss, accumulate wine driving crisis unconsciously; Heavy then because certain root flexible pipe explosion produces a large amount of outflows of oil (gas), cause rapid decompression in the whole oil and gas pipes after the master cylinder, cause whole wheel brakings malfunctioning, cause serious train operation accident.

Major technique task of the present utility model is the problem at above-mentioned prior art existence; design the safety guard of a kind of brake solution feed channel breakage; in case producing, the oil-air pressure flexible pipe on a certain wheel cracks or explosion; slide valve in the device is from the outlet slippage of trend decompression end; close fuel-displaced (gas) of decompression end rapidly; thereby continue to keep oil (gas) pressure in the remaining pipes, make other wheel still can normal brake application.

The utility model is mainly by having oil and gas import, gas channel, and the pedestal of oil gas vent constitutes, characteristics are that oil and gas import communicates with gas channel, the pressure limiting pipe of gas channel and symmetric arrangement and overflow pipe one end link, the pressure limiting pipe of check valve and the other end and the shunt conduit of overflow pipe are housed to link, be furnished with slide valve in the shunt conduit between two parties, both sides are equipped with respectively with damming of connecting firmly of shunt conduit wall and are chewed and left and right sides oil gas vent, the slide valve both sides are fixed with connecting rod and put in to dam and chew in the mouth, the end of connecting rod is installing the slide plate that has some circulation apertures, the two ends of slide valve have tapered protrusion to chew mouthful mutually close joining with damming, meanwhile the slide valve periphery also can hide the outlet of adjacent pressure limiting pipe, has pull back spring can make slide valve playback between two parties in shunt conduit in addition.

Its technical pattern also can comprise: the slide valve periphery is provided with three delineation position annular grooves, by the elastic force steel ball inlay card location that is provided with on the shunt conduit wall.End at pressure limiting pipe and overflow pipe is provided with the set screw that can adjust check valve spring pressure.Some circulation apertures on the slide plate are setovered for concentrating on the slide plate periphery.

Adopt the safety guard of the brake solution feed channel breakage of above-mentioned technical pattern, has following effect successively: 1, in vehicle normal braking process, with pressure medium oil brake trailing wheel is example, the pressure oil that is provided by master cylinder transfers to the oil and gas import of the safety fender guard that is contained in car sedan-chair rear end through stereoplasm tube, the pressure oil gas channel of flowing through, promote the elastic force check valve in the left and right sides pressure limiting pipe, flow to shunt conduit, and then dam about successively flowing through and chew mouth, and the circulation aperture on the slide plate of the left and right sides, external hose from the left and right sides oil gas vent of this device transfers to the hydraulic actuating cylinder on the trailing wheel of the left and right sides respectively, the expansion brake facing makes left and right sides trailing wheel braking; Remove when braking, because the fuel transfer pressure of master cylinder descends, the pressure oil in the trailing wheel hydraulic actuating cylinder backflows by the check valve of overflow pipe, and the brake facing of shoe brake is by the elastic force return, thereby trailing wheel releasing braking state can continue to travel.Same principle connects the safety fender guard that is contained in car sedan-chair front end from master cylinder through stereoplasm tube, and its external hose links with left and right sides front-wheel respectively, thus the braking or the brake off of control left and right sides front-wheel.In brake process, produce crack or explosion leakage of oil if suppose the external hose on the left rear wheel, thereby cause the oil pressure in this flexible pipe to descend, the left oil gas vent place oil pressure that also is this device descends, make the left oil pressure of the right-hand oil pressure of the left slide plate in the shunt conduit greater than the exit end place, thereby right-hand pressure oil promotes related connecting rod of left slide plate and slide valve slippage left together, on slide valve left tapered protrusion fill in a left side dam chew mouthful in till the airtight fuel feeding, and in design, the end position that moves to left of slide valve just in time makes the slide valve periphery hide the oil outlet end of left pressure limiting pipe, under the dual airtight effect of blocking asphalt channel, it is fuel-displaced that left oil gas vent is stopped, simultaneously also guaranteed to keep normal oil pressure in the remaining pipes, made off hind wheel and the left and right sides front-wheel still can normal brake application.When changing damaged left external hose, and after oil piping system is full of oil, make the right and left oil pressure of left slide plate in the shunt conduit keep balance, pull back spring can make during the slide valve return returns, and normal condition heavily becomes.The damaged situation of all the other wheel flexible pipes can be analogized.2, slide valve is provided with the functions of three delineation position annular grooves and is: when external left flexible pipe is damaged, dam and chew mouthful and slide valve hides left pressure limiting pipe in the left tapered protrusion of the slide valve airtight left side that moves to left, the right positioning ring groove of this moment is just in time by the elastic force steel ball inlay card on the shunt conduit wall; Otherwise when if right flexible pipe is damaged, dam and chew mouthful and hide right pressure limiting pipe in the slide valve airtight right side that moves to right, the left positioning ring groove of this moment is just in time by elastic force steel ball inlay card, this additional inlay card resistance helps the slide valve relative positioning, makes the choked flow function keep stable.When the device normal condition, the common inlay card of elastic force steel ball is located in the middle annular groove of slide valve, when the vehicle ' double swerve, avoids slide valve to slide arbitrarily in addition.3, after an end of pressure limiting pipe and overflow pipe is provided with external set screw, can be by the spring pressure on the design-calculated pipeline oil pressure levelling check valve, both can guarantee the oil pressure unanimity of backflowing that oil pressure unanimity and left and right overflow pipe of left and right pressure limiting pipe, the more important thing is that the pressure limiting pipe as if this device that will install on the front truck sedan-chair goes out oil pressure, transfer to pressure limiting pipe greater than this device of installing on the car sedan-chair of back when going out oil pressure, can guarantee promptly that also rear wheel brake is prior to the front-wheel brake fuel feeding, realize trailing wheel prior to front wheel brake, thereby make the vehicle integral stop more reliable and more stable.4, the purpose that some circulation apertures are set on the slide plate is the mobile damping for pressure boost oil, the oil pressure of drg is increased or backflowing of oil more becomes mild stable.When these apertures that circulate are concentrated certain one side that is biased in slide plate, facts have proved at certain external hose and leak under the decompression situation, will help mobile the reaching of pressure oil to transmit passing slide plate action in the press process.

Fig. 1 is the utility model structural profile scheme drawing.

Fig. 2 is that some circulation apertures (14) of slide plate among Fig. 1 (15) concentrate biasing A to scheme drawing.

From the visible the utility model keystone configuration of Fig. 1 is that the oil and gas import (2) that pedestal (1) is provided with communicates with gas channel (3), the pressure limiting pipe (4) and overflow pipe (5) symmetric arrangement of check valve (6,7) are housed respectively, and each links two ends of pipe (4,5) with gas channel (3) and shunt conduit (8).There are slide valve (9), two sides respectively to be fixed with in the shunt conduit (8) between two parties to dam and chew (10) and left and right oil gas vent (11,12).Slide valve (9) both sides are fixedly connected with connecting rod (13), and connecting rod puts in to dam and chews in (10) mouth, and the slide plate (15) with some circulation apertures (14) is equipped with on the top of connecting rod.The tapered projectioies in two ends (16) of slide valve (9) when sliding in shunt conduit (8), can be chewed (10) mouthful mutually close joining with damming, and dam chew (10) mouthful close join close in, slide valve (9) periphery has hidden the outlet of adjacent pressure limiting pipe (4).Other has can make slide valve (9) playback pull back spring (17) placed in the middle.

Slide valve (9) periphery is provided with middle and left and right totally three delineation position annular grooves (18), and shunt conduit (8) wall is provided with elastic force steel ball (19).Left tapered protrusion (16) on valve body (9) is dammed with a left side and is chewed (10) mouthful close timing, and steel loop (19) inlay card advances in the right positioning ring groove (18); Right tapered protrusion (16) on valve body (9) is dammed with the right side and is chewed (10) close timing, and steel ball (19) inlay card advances in the left side location grooved ring (18); When valve body (9) was placed in the middle in shunt conduit (8), steel ball (19) inlay card advanced in the interfix grooved ring (18).

The one end outside of pressure limiting pipe (4) and overflow pipe (5) is provided with set screw (20), set screw (20) can directly compress check valve (6) steel ball or directly compress check valve (7) spring, to adjust the oil-feed or the oil spilling pressure of spring tension controlling non-return valve (6,7).Set screw this moment (20) can in establish blind hole and communicate, the formation asphalt channel with the slotted eye of peripheral hardware.

Be provided with three circulation apertures (14) from the visible slide plate of Fig. 2 (15), on the slide plate periphery, concentrate the deployment scenarios of biasing.

Claims (4)

1; the safety guard of brake solution feed channel breakage is mainly by having oil and gas import (2); gas channel (3); left and right sides oil gas vent (11; 12) pedestal (1) constitutes; it is characterized in that oil and gas import (2) communicates with gas channel (3); check valve (6 is housed respectively; 7) pressure limiting pipe (4) and overflow pipe (5) symmetric arrangement; pipe (4; 5) each links two ends with gas channel (3) and shunt conduit (8); slide valve (9) is arranged in the shunt conduit (8) between two parties; both sides respectively are fixed with to dam chews (10) and a left side; right oil gas vent (11; 12); the both sides of slide valve (9) are fixedly connected with connecting rod (13) and put in to dam and chew in (10) mouthful; the slide plate (15) with some circulation apertures (14) is equipped with in the end of connecting rod; the two ends of slide valve (9) have tapered protrusion (16) to chew (10) mouthful mutually close joining with damming; hide adjacent pressure limiting pipe (4) outlet simultaneously in close timing slide valve (9) periphery, other has can make slide valve (19) playback pull back spring (17) placed in the middle.

2, the safety guard of brake solution feed channel according to claim 1 breakage is characterized in that an end of pressure limiting pipe (4) and overflow pipe (5) is provided with external set screw (20).

3, the safety guard of brake solution feed channel according to claim 1 and 2 breakage is characterized in that slide valve (9) is provided with three delineation position annular grooves (18), shunt conduit (8) wall be provided with can inlay card annular groove (18) elastic force steel ball (19).

4, the safety guard of oily oil and gas pipes breakage of stopping according to claim 3 is characterized in that concentrated being biased on the slide plate periphery of some circulation apertures (14) on the slide plate (15).