CN85103303B - Controllable accelerating jack - Google Patents
Controllable accelerating jack Download PDFInfo
- Publication number
- CN85103303B CN85103303B CN85103303A CN85103303A CN85103303B CN 85103303 B CN85103303 B CN 85103303B CN 85103303 A CN85103303 A CN 85103303A CN 85103303 A CN85103303 A CN 85103303A CN 85103303 B CN85103303 B CN 85103303B
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- valve
- speed
- speed control
- acceleration
- control unit
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Abstract
The present invention relates to a controllable accelerator which is suitable for the needing sections of railway marshalling yards and is a pneumatic speed-regulation tool by which humping trains can be accelerated or not. The original accelerator for railway trains is composed of an acceleration device and a straight pneumatic control valve, and needs to be matched with a retarder for use. The controllable accelerator of the present invention is composed of an acceleration device and a speed control device and only accelerates trains of which the speed is lower than the critical speed, and the controllable accelerator can not be matched with the retarder. Thus, the present invention reduces the investment for equipment, and enhances the humping control precision of trains, the safe coupling rate and the marshalling ability.
Description
The present invention relates to a kind of being fixed on the rail, the pneumatic speed control tool that can make vehicle quicken or not quicken.
The present invention quickens the top development by rolling stock and comes.Quicken that the top is made up of acceleration device and air control valve of straight type that is fixed on the acceleration device.Up and down the spool of perpendicular movement and one are supported on valve rod on the spool by spring one in the air control valve of straight type.When the top of wheel rim by the acceleration push rod, when depressing air control valve of straight type valve rod top, valve rod promotes spool and moves downward, and opens free air diffuser, makes the piston assembly upward movement in the acceleration device, contacts with the wheel axis rear, thereby vehicle is quickened.This acceleration top is applicable to the section that railway classification yard need quicken, but because it all plays accelerating action to the vehicle of various speed, therefore made idle work sometimes, and some tops of slowing down also must be set the vehicle of fair speed, so both waste air quantity, increased equipment investment again.
The purpose of this invention is to provide a kind of section that is applicable to that railway classification yard need quicken, be particularly useful for marshalling yard up-grade speed control section, can control the acceleration device of use according to vehicle speed governing needs.
The present invention quickens development on the design basis of top at rolling stock, has promptly been replaced the air control valve of straight type on former acceleration top by a speed control unit.Speed control unit is made up of speed control valve and mechanically controlled valve.Speed control valve can be differentiated the speed of vehicle.When humping of cars speed was higher than critical speed, the valve rod of speed control valve cut off free air diffuser under the pressure wheel, and acceleration device is not worked, when humping of cars speed subcritical speed, speed control valve is opened free air diffuser under the pressure wheel, and acceleration device work is quickened vehicle.As long as humping of cars speed subcritical speed is quickened the top and just constantly vehicle quickened, after humping of cars speed exceeded critical speed, acceleration device just no longer quickened vehicle, thereby had realized the automatic guidance of humping of cars speed.
The a certain proportion of fluid of speed control valve inner filling is gentle, and the pressure reduction that relies on fluid and gas flow to cause produces the power that varies in size and realizes control to mechanically controlled valve on piston rod.
On the valve body of speed control valve and the cylinder body of acceleration device intake and exhaust channel is arranged all, its junction seals with the O RunddichtringO, and the bolt hole of fixed speed control cock is arranged on the cylinder body.A deflation hole is arranged on the valve gap of speed control valve, can be with the pressurized air exhaust to atmosphere in the action after-acceleration device.
Width between centers between speed control valve valve rod and the acceleration device push rod is when depressing the speed control valve valve rod and begin air feed according to the skating vehicle wheel rim of subcritical speed, and the top of quickening push rod just contacts design-calculated with the wheel rim nadir.Can make like this and quicken the forced stroke that push rod has maximum, make controlled acceleration top do full merit.
The valve gap of speed control valve of the present invention and the valve body of mechanically controlled valve, inside and outside spool all adopts high-strength aluminum alloy material, and adopts squeeze casting to be shaped.The speed control valve valve gap adopts DX type oil-free lubrication composite material lining, and valve body and lower valve sleeve adopt DU type oil-free lubrication composite material lining.
As long as change the air inlet latus rectum of speed control valve, and adopt the rubber hose assembly of being furnished with quick coupling of different latus rectums, can adjust the critical speed on controlled acceleration top, so that make it be applicable to the acceleration area of different needs in the marshalling yard.
This controlled acceleration top is compared with original acceleration top, owing to can not play accelerating action to the vehicle that is higher than critical speed, therefore can not need to be used with the top of slowing down, and has reduced equipment investment, has reduced system cost.The present invention has improved the control accuracy of humping of cars, has improved that safety connects the extension rate and volume is separated ability.The present invention is in light weight, and component processing method is simple, good sealing effect, and long service life can reduce maintenance load.
Fig. 1 is the keystone configuration figure on controlled acceleration top.(1) for quickening push rod, (2) are cylinder cap, and (3) are cylinder body, and (4) are piston, and (5) more than form acceleration device for boring spring up and down.(6) be valve rod, (7) are the speed valve seat, and (8) are the speed valve plate, and (9) are the speed valve spring, and (10) are piston rod, and (11) are seal cover cap, and (12) are bonnet,, more than form speed control valve; (13) be valve body, (14) be inner spool, (15) be outer spool, (16) be lower valve sleeve, (17) be retracing spring, (18) be bottom flange, an exhausr port (19) and an outer valve port (20) are arranged on the spool (15) outside, composition mechanically controlled valve more than the interior valve port (21) is being arranged on the inner spool (14).
May command is quickened the very useful rail inboard that is bolted to.When car speed is higher than critical speed, wheel is depressed valve rod (6) at a relatively high speed, because of in the valve rod (6) a certain proportion of fluid and gas being arranged, speed valve plate this moment (8) is closed under fluid flows the pressure reduction that causes, piston rod (10) is gone up produced bigger downward force, overcome the power of retracing spring (17) and make inner spool (14) move downward that spool (15) moves downward valve port outside opening (20) outside closing interior valve port (21) simultaneously valve rod drives, this moment is because interior valve port closes compression air can not enter acceleration device cylinder body cavity of resorption, so does not quicken vehicle on controlled acceleration top.
When car speed subcritical speed, wheel is to depress valve rod (6) than low velocity, speed valve plate (8) is gone up the mobile pressure reduction that produces of fluid and is not enough to overcome the reaction of bearing of speed valve spring (9) and can not closes, the fluid of piston rod (10) epicoele is by gap and piston rod (10) the head aperture inflow cavity of resorption of speed valve plate (8) with piston rod (10), make piston rod (10) produce less downward force, can not overcome the power of retracing spring (17) and inner spool (14) is moved downward, thereby interior valve port (21) can not be closed, valve rod this moment (6) continues to move downward under the wheel effect, promoting outer spool (15) moves downward and opens outer valve port (20), pressurized air is through outer valve port (20), interior valve port (21) enters acceleration device cylinder body cavity of resorption, make the piston assembly upward movement of acceleration device, so quicken vehicle on controlled acceleration top.
Speed control valve is a unit of the wheel application of force very I being differentiated humping of cars speed, inner to fill a certain proportion of fluid gentle, relies on pressure reduction that fluid and gas flow cause to go up at piston rod (10) and produce the power that varies in size and realize control to mechanically controlled valve.
When rail is fixed in by the thru-bolt on the cylinder cap in controlled acceleration top, when the distance of speed control valve masthead portion and rail rail level should guarantee that wheel depresses the speed control valve valve rod at a high speed and makes piston rod (10) promote inner spool (14) to cut out interior valve port (21), valve rod (6) lower surface still kept the necessarily amount of opening with the outer valve port (20) of outer spool (15) upper surface composition.
But the spool that mechanically controlled valve has inner spool (14) that a slide relative again can be spacing and outer spool (15) to make up, all have on the inside and outside spool with the fixing seal ring of steel-wire carcass, can the inside and outside valve port of control pressurized air break-make be sealed respectively, the * on the outer spool can make the pressurized air circulation and guarantee sufficient flow.Retracing spring (17) can guarantee that combination valve core resets at wheel by behind speed control valve valve rod (6) top, and controlled acceleration withstands on * by air tight under the state.The free air diffuser of valve body (13), the interior valve port of combination core and the inlet channel of valve body and cylinder body all need have enough cross sections, to guarantee that the vehicle of subcritical speed is done full merit.
Claims (6)
1, a kind of pneumatic speed control tool that is fixed on the made vehicle acceleration on the rail comprises an acceleration device and a control setup of being made up of acceleration push rod, cylinder cap, piston, cylinder body, coil spring; It is characterized in that control setup is by a speed control valve and the speed control unit that mechanically controlled valve constitutes, its speed control valve is made up of valve rod (6), speed valve seat (7), speed valve plate (8), speed valve spring (9), piston rod (10), seal cover cap (11), bonnet, (12) etc., and its mechanically controlled valve is made up of valve body (13), inner spool (14), outer spool (15), lower valve sleeve (16), retracing spring (17) and bottom flange (18) etc.Coil spring in acceleration device adopts bores spring up and down.
2,, it is characterized in that a certain proportion of fluid of speed control valve valve rod (6) inner filling is gentle according to the vehicle launch speed-regulating tool of claim 1.
3, according to the vehicle launch speed-regulating tool of claim 1 and 2, it is characterized in that the valve body (13) of speed control unit is provided with an intake and exhaust channel, bonnet, (12) is provided with a deflation hole.
4, according to the vehicle launch speed-regulating tool of claim 3, it is characterized in that the valve gap (12) of speed control unit, high-strength aluminum alloy material is all adopted in valve body (13) and combination valve core (14), (15), and adopts squeeze casting to be shaped.
5,, it is characterized in that valve gap (12), valve body (13) and the lower valve sleeve (16) of speed control unit adopts oil-free lubrication composite material lining respectively according to the vehicle launch speed-regulating tool of claim 4.
6, according to the vehicle launch speed-regulating tool of claim 4, the inner spool (14) that it is characterized in that speed control unit, all have on the outer spool (15) with the fixing seal ring of steel-wire carcass, valve body (13) and combination valve core (14) adopt polytetrafluoroethylene seal ring and the shared combined seal ring of O type rubber seal between (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85103303A CN85103303B (en) | 1985-05-04 | 1985-05-04 | Controllable accelerating jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85103303A CN85103303B (en) | 1985-05-04 | 1985-05-04 | Controllable accelerating jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85103303A CN85103303A (en) | 1986-10-29 |
| CN85103303B true CN85103303B (en) | 1988-10-26 |
Family
ID=4793095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85103303A Expired CN85103303B (en) | 1985-05-04 | 1985-05-04 | Controllable accelerating jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85103303B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751426B (en) * | 2019-03-05 | 2020-06-26 | 何世旺 | Dynamic flow balance valve |
-
1985
- 1985-05-04 CN CN85103303A patent/CN85103303B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85103303A (en) | 1986-10-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |