CN202082410U

CN202082410U - Waste gas brake button valve

Info

Publication number: CN202082410U
Application number: CN2011201393989U
Authority: CN
Inventors: 张贵平; 徐忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-03
Filing date: 2011-05-03
Publication date: 2011-12-21
Anticipated expiration: 2021-05-03

Abstract

The utility model discloses a waste gas brake button valve which comprises a valve body, wherein an upper cavity and a lower cavity are arranged in the valve body, an upper core rod is arranged in the upper cavity, an upper spring is sheathed outside the upper core rod, the upper end of the upper core rod is clamped with a top rod cap, a transversal through hole is arranged between the upper cavity and the lower cavity in the middle of the valve body, one side of through hole is a gas outlet, the other side of the through hole is provided with a sealing end cover, a lower core rod is arranged in the lower cavity, the upper end of the lower core rod is clamped with a bulb valve, a valve reset spring is sheathed outside the lower core rod, the lower end of the lower core rod is clamped with a lower seal plug, the side of the lower cavity is provided with a gas inlet, the bottom of the lower cavity is provided with a filter screen, the upper end of the filter screen is provided with a snap spring, and the upper end of the valve body is externally sheathed with a nut. In the utility model, the upper cavity and the lower cavity are formed in the valve body, a pressure part is respectively arranged in the upper cavity and the lower cavity, and the gas outlet is formed in the middle of the valve body, so that the air passage of the valve can be effectively opened in stress, the normal running of the whole automobile discharge brake device can be ensured, the mechanical strength and sealing degree can be greatly strengthened, and no problem can be caused after the waste gas brake button valve is be used for a long time.

Description

A kind of waste-gas braking push buttonvalve

Technical field:

The utility model relates to valving.A kind of specifically waste-gas braking push buttonvalve.

Background technique:

The exhaust braking of automobile by waste-gas braking push buttonvalve, waste gas clutch release slave cylinder, exhaust brake butterfly valve, stop oil gas cylinder and form.The exhaust brake handiness, effectively simple.When ice and snow reaches sliding muddy water road traveling, use exhaust brake, can reduce sideslip; When lower long slope, use exhaust brake can reduce the number of times of service brake, reduce the temperature rise of brake drum, improve the reliability of braking.When using exhaust brake, the supply that can reduce the motor oil plant can fuel saving down to oil-break.The exhaust brake of automobile is the way that adopts the exhaust passage that kills engine, and makes engine piston when exhaust stroke, is subjected to the back pressure of gas, stops the running of motor and produces braking action, thereby reach the purpose of the control speed of a motor vehicle.When the driver uses exhaust brake, the waste-gas braking push buttonvalve of left bottom on the operator cabin base plate that tramps with one's feet, the stressed passage of opening gas of push buttonvalve, pressurized air enters the waste gas clutch release slave cylinder.The waste gas slave cylinder piston pressure of air by compression moves, and drives push rod, and push rod drives the exhaust brake butterfly valve, and butterfly valve rotates outlet pipe is blocked.Pressurized air is opened also to enter simultaneously at push buttonvalve and is stopped oil gas cylinder simultaneously, and the piston that stops oil gas cylinder moves under compressed-air actuated effect, and push rod drives the speed regulator handle by linking mechanism, makes the oil plant stop supplies.Because outlet pipe blocks, motor stops exhaust, and supply of fuel is interrupted, and the pressure in the outlet pipe rises to 0.3～0.4MPa.Engine piston exhaust stroke at work must overcome this pressure, thereby has increased the power of engine braking greatly.So when adopting exhaust brake, engine piston is when the engine exhaust stroke, piston is subjected to the back pressure of gas, reaches wheel through bent axle and power train, has increased the rotational resistance of wheel, has reduced the speed of a motor vehicle.

Existing waste-gas braking push buttonvalve, its complex structure, mechanical strength is low, and long-term the use has malfunctioning situation generation, and therefore imagination provides a kind of new structure to improve.

Summary of the invention:

The purpose of this utility model provides a kind of waste-gas braking push buttonvalve, by having cavity up and down in the valve body, and in upper and lower cavity setting pressure parts respectively, leave the mode of structure of gas port at the valve body middle part, can when stressed, effectively open the valve air passageways rapidly, guaranteed working well of automobile exhaust braking device integral body, its mechanical strength and tightness all strengthen greatly, and long-term the use can not go wrong yet.

The technical solution adopted in the utility model is:

A kind of waste-gas braking push buttonvalve, comprise valve body: valve inner has upper and lower two cavitys, upper plenum inside is equipped with core bar, last core bar is set with upper spring outward, and last core bar upper end is installed with the push rod cap, and upper plenum inner upper end inwall has annular groove, be installed with the endoporus back-up ring in the groove, endoporus back-up ring and last core bar are fitted, and have the space between last core bar side and the valve body, and little O RunddichtringO is installed in the space; Be provided with cross through hole between upper and lower two cavitys in valve body middle part, through hole one side is the air outlet, and the through hole opposite side is equipped with end cover; Following cavity inside is equipped with down core bar, following core bar upper end is installed with the bulb valve, following core bar is set with the valve return spring outward, following core bar lower end is installed with down blocking, and following cavity side has suction port, and following cavity bottom is equipped with filter screen, between filter screen and the following cavity inner wall endoporus back-up ring is installed down, the filter screen upper end is equipped with jump ring, between jump ring and the following cavity inner wall big O RunddichtringO is installed, and the jump ring upper end leans in following blocking bottom; The outer nut that also is set with in valve body upper end.

Advantage of the present utility model is:

The utility model is by having cavity up and down in the valve body, and in upper and lower cavity setting pressure parts respectively, leave the mode of structure of gas port at the valve body middle part, can when stressed, effectively open the valve air passageways rapidly, guaranteed working well of automobile exhaust braking device integral body, its mechanical strength and tightness all strengthen greatly, and long-term the use can not go wrong yet.

Description of drawings:

Fig. 1 is the utility model structural representation.

Embodiment:

A kind of waste-gas braking push buttonvalve, comprise valve body 7: valve body 7 inside have upper and lower two cavitys, upper plenum 19 inside are equipped with core bar 3, be set with upper spring 4 outside the last core bar 3, last core bar 3 upper ends are installed with push rod cap 1, and upper plenum 19 inner upper end inwalls have annular groove, be installed with endoporus back-up ring 2 in the groove, endoporus back-up ring 2 is fitted with last core bar 3, has the space between last core bar 3 sides and the valve body 7, and little O RunddichtringO 6 is installed in the space; Be provided with cross through hole 15 between upper and lower two cavitys in valve body 7 middle parts, through hole one side is air outlet 16, and the through hole opposite side is equipped with end cover 17; Following cavity 20 inside are equipped with down core bar 18, following core bar 18 upper ends are installed with bulb valve 8, the following core bar 18 outer valve return springs 9 that are set with, following core bar 18 lower ends are installed with down blocking 10, following cavity 20 sides have suction port 21, following cavity 20 bottoms are equipped with filter screen 14, between filter screen 14 and following cavity 20 inwalls endoporus back-up ring 12 is installed down, filter screen 14 upper ends are equipped with jump ring 13, between jump ring 13 and following cavity 20 inwalls big O RunddichtringO 11 is installed, jump ring 13 upper ends lean in following blocking 10 bottoms; Valve body also is set with nut 5 outside 7 upper ends.

Claims

1. waste-gas braking push buttonvalve, comprise valve body, it is characterized in that: valve inner has upper and lower two cavitys, and upper plenum inside is equipped with core bar, and last core bar is set with upper spring outward, last core bar upper end is installed with the push rod cap, upper plenum inner upper end inwall has annular groove, is installed with the endoporus back-up ring in the groove, and endoporus back-up ring and last core bar are fitted, have the space between last core bar side and the valve body, little O RunddichtringO is installed in the space; Be provided with cross through hole between upper and lower two cavitys in valve body middle part, through hole one side is the air outlet, and the through hole opposite side is equipped with end cover; Following cavity inside is equipped with down core bar, following core bar upper end is installed with the bulb valve, following core bar is set with the valve return spring outward, following core bar lower end is installed with down blocking, and following cavity side has suction port, and following cavity bottom is equipped with filter screen, between filter screen and the following cavity inner wall endoporus back-up ring is installed down, the filter screen upper end is equipped with jump ring, between jump ring and the following cavity inner wall big O RunddichtringO is installed, and the jump ring upper end leans in following blocking bottom; The outer nut that also is set with in valve body upper end.