CN2037330U - Safe folded angle plug door - Google Patents
Safe folded angle plug door Download PDFInfo
- Publication number
- CN2037330U CN2037330U CN 88213483 CN88213483U CN2037330U CN 2037330 U CN2037330 U CN 2037330U CN 88213483 CN88213483 CN 88213483 CN 88213483 U CN88213483 U CN 88213483U CN 2037330 U CN2037330 U CN 2037330U
- Authority
- CN
- China
- Prior art keywords
- locking
- lock
- rod
- spool
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The utility model relates to a valve-a folded angle plug door in the system of air brake of a railway vehicle. A locking device is additionally arranged on the valve body of the existing folded angle plug door mainly, and a locking hole matched with the locking device is arranged on a valve core, and the locking device is a cylinder structure. The valve core is controlled by using a piston rod to insert or quit the locking hole. The folded angle plug door and raise the safety of the running of a train and avoid the position of the valve core to be changed by other people discretionally. The utility model has the advantages of simple structure, convenient operation and high reliability.
Description
The utility model relates to a kind of valve---the angle cock of rail vehicles Pneumatic brake systems.
Angle cock is installed in the two ends that train braking is responsible for, and its effect is to open or the closes compression air flue.Existing angle cock generally all is made up of parts such as spool, valve body and handles, and spool cooperates with valve body and allows it to rotate relative to valve body, and handle is installed in the upper end of spool.Whether the deficiencies in the prior art part is: angle cock does not have locking device, controls spool and valve body, allow them to relatively rotate, as long as whenever anyone moves handle like this, just can change the due state of gas circuit; In case gas circuit is closed, and the staff does not realize, will cause train braking malfunctioning during car operation, and not imaginable accident will take place the situation of meeting.January 17 438 passenger trains are carried because of angle cock is closed, brake failure in People's Daily as in January, 88, the grave accident that bumps against with freight train occurs.Analogue happens occasionally, and has caused unnecessary loss.
The purpose of this utility model is to avoid weak point of the prior art, and a kind of angle cock product that has pneumatic locking device is provided.Prevent twisting plug door, assurance train operating safety arbitrarily.
Can reach the purpose of this utility model by following measure.On the valve body of existing angle cock, increase pneumatic locking device, the locking hole of matching with locking device is arranged on spool, the air cylinder structure that locking device is made up of column cavity lock, spring and locking piston rod, spring shaft is to being installed between piston rod and the lock, and piston rod is bearing fit with the lock cavity and the lock cavity is communicated with the valve body gas circuit.It utilizes compressed-air actuated pressure, and the effect by piston rod changes air pressure into mechanical thrust, makes the piston rod end insert the locking hole or withdraw from from the locking hole.Realize air operated control locking or unlatching.
Below in conjunction with accompanying drawing, embodiment is described in further detail content of the present utility model.
Scheme safe angle cock organigram.
Among the figure: (1) colludes shellfish; (2) locking rod; (3) seal ring; (4) spring; (5) little spring; (6) air extractor vent; (7) locking hole; (8) handle; (9) spool; (10) valve body; (11) lock; (12) cylinder head.
It is on the basis of existing angle cock, promptly keeps parts such as original spool, valve body and handle and increases a locking device---gas lock, and safe angle cock is installed on the train, and locking device is controlled its locking or unlatching by the driver in the operation.
Locking device is on valve body, and it is an air cylinder structure, mainly by lock (11)---and cylinder body locking piston rod and spring (4) are formed.Lock (11) is the stepped cylindrical cavity body structure, and its outer wall and valve body are combined into one, and with the valve body casting, tail end seals with cylinder head (12); Cavity is for installing locking piston rod and spring (4), and stepped land is in order to limit the axially movable position of locking piston rod; The lock cavity is communicated with the gas circuit of valve body (10) by the air extractor vent (6) of left end, and this is the passage of pressure gas control locking device.The locking piston rod is formed by colluding shellfish (1), locking rod (2), seal ring (3), little spring (5) and fastener.Colluding shellfish (1) is that the bottom has cylinder shell-like member, the outer cylinder of taper hole fluted; Locking rod (2) is to have on it and collude the match column rod member of cone valve of shellfish taper hole, and its right-hand member head can cooperate with spool locking hole (7).Promptly insert in the locking hole and realize locking; Spring (4) is placed in the locking rod right side, is installed between locking rod and the lock.Locking rod with cone valve with collude the shellfish taper hole and cooperate, little spring (5) is placed in colluding shellfish cover on the bar in locking rod cone valve left side and with nut and fixes, seal ring (3) is installed in the groove that colludes shellfish, also can add the nut locking at locking rod right side spring (4) afterbody, this two places nut is also in order to adjusting the tight power size of giving of spring (4), (5), according to the big or small setting spring of compressed air pressure and give tight power.The effect of little spring (5) is, when air pressure within the specific limits the time, its guarantees locking rod cone valve and colludes the shellfish taper hole and combine closely.Make and collude shellfish, locking rod and seal ring formation locking piston rod integral body, constitute air cylinder structure with lock cylindricality cavity.When pressurized air is injected lock left end chamber by air extractor vent (6), just promote locking piston rod integral body and overcome the elastic force of spring (4), and locking rod is inserted in the spool locking hole (7), make the spool locking; But when air pressure surpasses certain limit.Then can overcome again little spring (5) application force, cone valve is opened, pressurized air enters the right chamber of lock from the gap between taper hole and the cone valve; The effect of spring (4) is to guarantee locking piston rod integral body, be not subjected to external force to do the tram of time spent.Be that locking device is in opening, spool can freely rotate relative to valve body.That is to say: when lock left chamber pressure was lower than certain value, spring (4) guaranteed that locking device is in opening-decompression and unblanks; Air pressure surpasses certain limit, when entering right chamber, air pressure balance in the left and right chamber, spring (4) guarantees that also locking device is in opening---supercharging is unblanked.
Open in spool and the corresponding position of locking rod in locking hole (7), and centerline hole is consistent with handle orientations, directly perceived, be convenient to control; The aperture size should guarantee that locking rod termination portion can freely insert or withdraw from.When handle was parallel with the brake pipe, gas circuit was open-minded; Gas circuit was closed when both were vertical.
Safe angle cock is installed on after train braking be responsible for to go up, and during runing, when the driver places the operation position with the brake activation bar, must guarantee that brake pipe's gas circuit is open-minded.This moment, lock left chamber air pressure was example with the passenger train, was in 5～6kg/cm
2Scope in, locking rod inserts the locking hole, is in locking states, spool can not rotate arbitrarily relative to valve seat, guarantees both tram relations; For ease of the operation that picks up and drop train, minimizing work capacity, when the driver places the alleviation position with the brake activation bar.Air pressure is less than certain value or when placing the overshoot position, air pressure＞6.2kg/cm
2, can realize that then decompression is unblanked or supercharging is unblanked.The locking of locking device is controlled by the driver fully with unlatching like this.
The relative prior art of the utility model has following advantage:
1. improve the security of train operation, opening, close and lock fully of angle cock controlled by the driver, avoids other people to change arbitrarily spool position;
2. simple in structure, easy to use, reliable, be applicable to all kinds of trains, be applicable to various operation situations that the vehicle operation of all can seting out need not increase the staff when train braking or alleviation.
Claims (2)
1, a kind of angle cock that relates to brake system of rail vehicle, it comprises spool, valve body and handle, spool cooperates with valve body and allows to rotate relative to valve body, handle is installed in the upper end of spool, it is characterized in that one pneumatic locking device being arranged, the locking hole (7) of matching with locking device is arranged on spool at valve body; The air cylinder structure that locking device is made up of column cavity lock (11), spring (4) and locking piston rod, spring shaft is to being installed between piston rod and the lock, and piston rod is bearing fit with the lock cavity and the lock cavity is communicated with the valve body gas circuit.
2, angle cock as claimed in claim 1 is characterized in that the lock (11) of locking device is the stepped cylindrical cavity, and the locking piston rod is formed by colluding shellfish (1), locking rod (2), seal ring (3), little spring (5) and fastener; Locking rod (2) is the column rod member that cone valve is arranged on it, and it cooperates with spool locking hole (7) with the right-hand member head, and spring (4) is placed in the locking rod right side, is installed between locking rod and the lock; Colluding shellfish (1) is the cylinder shell-like member that taper hole is arranged at the bottom, outer cylinder is fluted, locking rod with cone valve with collude the shellfish taper hole and cooperate, little spring (5) is placed in locking rod cone valve left side and fixes with fastener in colluding shellfish, seal ring (3) is installed in the groove that colludes shellfish, constitutes air cylinder structure with lock cylindricality cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88213483 CN2037330U (en) | 1988-09-23 | 1988-09-23 | Safe folded angle plug door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88213483 CN2037330U (en) | 1988-09-23 | 1988-09-23 | Safe folded angle plug door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2037330U true CN2037330U (en) | 1989-05-10 |
Family
ID=4846588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88213483 Withdrawn CN2037330U (en) | 1988-09-23 | 1988-09-23 | Safe folded angle plug door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2037330U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582652A (en) * | 2011-01-11 | 2012-07-18 | 刘家安 | Special bevel valve with automatically opened and closed cylinder for railway vehicles |
| CN103832448A (en) * | 2014-03-19 | 2014-06-04 | 江利国 | Ball core angle cock capable of preventing improper closing |
| CN106428104A (en) * | 2016-11-28 | 2017-02-22 | 中车长春轨道客车股份有限公司 | Link structure for bend angle door block at rail route vehicle end |
| CN111706445A (en) * | 2020-04-07 | 2020-09-25 | 蓝箭航天空间科技股份有限公司 | Flow control valve for low-temperature liquid rocket propellant and liquid rocket engine |
-
1988
- 1988-09-23 CN CN 88213483 patent/CN2037330U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582652A (en) * | 2011-01-11 | 2012-07-18 | 刘家安 | Special bevel valve with automatically opened and closed cylinder for railway vehicles |
| CN103832448A (en) * | 2014-03-19 | 2014-06-04 | 江利国 | Ball core angle cock capable of preventing improper closing |
| CN106428104A (en) * | 2016-11-28 | 2017-02-22 | 中车长春轨道客车股份有限公司 | Link structure for bend angle door block at rail route vehicle end |
| CN106428104B (en) * | 2016-11-28 | 2020-03-10 | 中车长春轨道客车股份有限公司 | Vehicle end angle cock connecting structure for rail vehicle |
| CN111706445A (en) * | 2020-04-07 | 2020-09-25 | 蓝箭航天空间科技股份有限公司 | Flow control valve for low-temperature liquid rocket propellant and liquid rocket engine |
| CN111706445B (en) * | 2020-04-07 | 2021-09-14 | 蓝箭航天空间科技股份有限公司 | Flow control valve for low-temperature liquid rocket propellant and liquid rocket engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |