CN2576556Y - Brake-tube stop valve of railway vehicle - Google Patents
Brake-tube stop valve of railway vehicle Download PDFInfo
- Publication number
- CN2576556Y CN2576556Y CN 02285093 CN02285093U CN2576556Y CN 2576556 Y CN2576556 Y CN 2576556Y CN 02285093 CN02285093 CN 02285093 CN 02285093 U CN02285093 U CN 02285093U CN 2576556 Y CN2576556 Y CN 2576556Y
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- CN
- China
- Prior art keywords
- valve
- brake
- spool
- railway vehicle
- brake tube
- 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.)
- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model relates to a brake-tube stop valve of a railway vehicle. The utility model comprises a valve body which is provided with a valve front brake tube and a valve rear brake tube, a valve core which is provided with a working through hole, and a slide valve, wherein, the inner lower part of the valve core is provided with a slide valve chamber; a pressure spring is arranged between the bottom end of the slide valve and the valve core; the slide valve is columned, and the lower end part thereof is a flange plate. The valve core is provided with a front and a rear flow passage holes which respectively communicates the valve front brake tube and the slide valve chamber, and the valve rear brake tube and the slide valve chamber; the front and the rear flow passage holes are respectively provided with an opening on the top wall and the side wall of the slide valve chamber. The lower part of the valve body is provided with an air outlet; a communicating hole is arranged on the side wall of the slide valve chamber. When the included angle between the neutral axis of the working through hole and the neutral axis of the brake tubes is between 60 DEG and 120 DEG, the air outlet and the communicating hole, the front flow passage hole and the valve front brake tube, the rear flow passage hole and the valve rear brake tube are respectively communicated. When one stop valve is closed, pressure in the brake tubes can pass through the front and the rear flow passage holes, act on the slide valve jointly, and can enable the slide valve to slide downward to open the air outlet; thus the braking can be realized. Thereby, the utility model has the advantage of high safety and reliability.
Description
Technical field
The utility model relates to a kind of shutoff valve, especially a kind of brake tube for railway vehicle shutoff valve that is used for the railway brake system.
Background technology
Brake system in the railroad train is the important system that guarantees traffic safety, its structure comprises that perforation respectively saves brake pipe in compartment and is communicated with the brake that is used for the control tube internal pressure with this brake pipe, this brake is arranged in trainman's control cabin, so that the trainman handles, braking when needs stop; Reach between every adjacent two joint compartments on the brake pipe between train and the locomotive two shutoff valves all are housed, a shutoff valve is installed at rear portion, final section compartment.Referring to Fig. 1.The structure of existing shutoff valve comprises valve body 1 and the spool 2 that cooperates with valve body 1, have on the valve body 1 with valve that brake pipe communicates before brake pipe 4 and valve rear brake duct 5; Be provided with spring 20 between spool 2 bottoms and the valve body 1, its top has work through hole 3, spool 2 tops are equipped with handle 6, when brake pipe 4 before the valve on work through hole on the spool 3 and the valve body 1 and 5 perforations of valve rear brake duct, when promptly working the axis in-line of brake pipe 4 and valve rear brake duct 5 before the axis of through hole 3 and the valve, be full open position, when making the work through hole 3 on the spool, turning handle 6 turns over 90 ° with respect to valve body 1, promptly work when the axis of brake pipe 4 and valve rear brake duct 5 is 90 ° before the axis of through hole 3 and the valve, be buttoned-up status.Train has only last shutoff valve to be in closed condition when normal operating condition, and other shutoff valve is in complete opening state, the whole constant pressure that brake pipe is interior; When the needs glancing impact,, make the pressure minimizing in the brake pipe can realize braking by trainman's control brake machine.Yet, because malfunction or carelessness or closed one of them shutoff valve artificially, at this moment trainman's control brake machine can not make the brake pipe internal pressure in the compartment of pent shutoff valve back reduce, and then the carriage brake of this pent shutoff valve back is malfunctioning.If pent when being shutoff valve between train and the locomotive, then the brake failure of permutation train will cause great railway accident thus, cause cataphoretic failure for people's lives and properties.So, use existing brake tube for railway vehicle shutoff valve dangerous, unreliable.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of safe in utilization, failure-free brake tube for railway vehicle shutoff valve is provided.
The utility model brake tube for railway vehicle shutoff valve comprises having the preceding brake pipe of valve and the valve body of valve rear brake duct and the spool with work through hole that cooperates with valve body.The bottom is provided with valve chamber in the wherein said spool, is provided with guiding valve in the described valve chamber.Be provided with pressure spring between the bottom of guiding valve and the spool.Described guiding valve is a cylindrical shape, and the bottom is flange, this flange periphery and valve chamber sidewall running-fit.The preceding runner hole that becomes 90 ° of positions to be provided with the center of described work through hole on the outside face of described spool to be communicated with valve chamber, the trend in this preceding runner hole is vertical with the axis of described spool or tilt, and is opened on the roof of valve chamber.On the outside face of spool with described before be provided with the back runner hole of communication valve rear brake duct and valve chamber on the relative another side in runner hole, the trend in this runner hole, back or inclination vertical, and be opened on the valve chamber top side wall with the axis of described spool.Valve body lower portion be provided with described valve before the parallel exhaust outlet of brake pipe.Valve chamber sidewall bottom is provided with intercommunicating pore, and this intercommunicating pore is perpendicular to the axis of spool, and is positioned on the same axis with exhaust outlet.
The utility model brake tube for railway vehicle shutoff valve, wherein said guiding valve end face is equipped with packing seal by bolt.
The utility model brake tube for railway vehicle shutoff valve, wherein said guiding valve end face is the frustum shape, the bottom is provided with the spring perch with described flange one.
The utility model brake tube for railway vehicle shutoff valve is equipped with the valve pocket with some through holes between wherein said guiding valve and the spool.
The utility model brake tube for railway vehicle shutoff valve is equipped with the valve pocket with some through holes between wherein said guiding valve and the spool.
The advantage and the good effect of the utility model brake tube for railway vehicle shutoff valve are: owing to be provided with valve chamber in spool, be provided with guiding valve in the valve chamber, be provided with pressure spring between the bottom of guiding valve and the valve chamber, described guiding valve is a cylindrical shape, and the bottom is a flange, this flange periphery and valve chamber sidewall running-fit; The end face of guiding valve and valve chamber roof cooperating.Valve body lower portion is provided with exhaust outlet, is provided with intercommunicating pore below the guiding valve on the valve chamber sidewall, and when shutoff valve was in closed condition, exhaust outlet was communicated with intercommunicating pore.Valve body is provided with the preceding brake pipe of communication valve and the preceding runner hole of valve chamber and the back runner hole of communication valve rear brake duct and valve chamber, the runner hole is opened on the roof of valve chamber before being somebody's turn to do, back runner hole is opened on the sidewall of valve chamber, above the flange, in the moment of shutoff valve closed condition, should be communicated with valve chamber and the preceding brake pipe of valve in preceding runner hole, pressure air in the brake pipe acts on the upper surface of guiding valve, then the runner hole is communicated with valve chamber and valve rear brake duct, pressure air in the brake pipe acts on guiding valve flange upper surface, under the combined action of the pressure air before valve in brake pipe and the valve rear brake duct, guiding valve is descending, opens exhaust outlet, and the pressure air in the brake pipe is discharged to atmosphere by exhaust outlet, pressure in the brake pipe is reduced rapidly, realize braking.Like this when because malfunction or carelessness or when having closed one of them shutoff valve artificially, pressure in the brake pipe will be by preceding runner hole and runner hole combined action afterwards on guiding valve, the elastic force that makes guiding valve overcome pressure spring moves downward, thereby the preceding brake pipe connection of exhaust outlet, intercommunicating pore, valve chamber top, preceding runner hole and valve, runner hole, back and valve rear brake duct are communicated with,, realizes the pressure in the permutation car brake pipe emergency braking so will reducing, avoid causing danger, so use the utility model brake tube for railway vehicle shutoff valve safety, reliable.
Description of drawings
Fig. 1 is the structural representation of existing brake tube for railway vehicle shutoff valve;
Fig. 2 is the structural representation of the utility model brake tube for railway vehicle shutoff valve;
Fig. 3 is the structural representation of the utility model brake tube for railway vehicle shutoff valve at turn-off transient;
Fig. 4 be the utility model brake tube for railway vehicle shutoff valve in off position, the structural representation during the exhaust outlet air draft;
Fig. 5 is the cutaway view of the utility model brake tube for railway vehicle shutoff valve first embodiment;
Fig. 6 is the cutaway view of the utility model brake tube for railway vehicle shutoff valve second embodiment.
The specific embodiment
Referring to Fig. 2 to Fig. 6.Brake tube for railway vehicle shutoff valve of the present utility model comprises having the preceding brake pipe 4 of valve and the valve body 1 of valve rear brake duct 5 and the spool with work through hole 32 that cooperates with valve body 1.Spool 2 top ends are equipped with handle 6.Between spool 2 bottoms and valve body 1, be provided with spring 20.Wherein the bottom is provided with valve chamber 8 in spool 2, in this valve chamber 8 guiding valve 7 is housed, and is provided with pressure spring 10 between the bottom of guiding valve 7 and the spool 2.Be equipped with breather hole on the diapire of valve chamber 8 and valve body 1.Guiding valve 7 is a cylindrical shape, and the bottom is flange, this flange periphery and valve chamber 8 sidewall running-fits.The preceding runner hole 11 that becomes 90 ° of positions to be provided with the center of described work through hole 3 on the outside face of spool 2 to be communicated with valve chamber 8, the trend in this preceding runner hole 11 is vertical with the axis of spool 2, also can tilt, and preceding runner hole 11 is opened on the roof of valve chamber 8.On another side relative on the outside face of spool 2, be provided with the back runner hole 14 of communication valve rear brake duct 5 and valve chamber 8 with preceding runner hole 11, the trend in this runner hole, back 14 is vertical with the axis of spool 2, also can tilt, back runner hole 14 be opened on valve chamber 8 top side wall, when shutoff valve is in normal working, promptly work the axis of brake pipe 4 and valve rear brake duct 5 before the axis of through hole 3 and the valve when being positioned at same horizon, and back runner hole 14 is positioned at above the flange of guiding valve 7 at the aperture position of valve chamber 8 sidewalls.Valve body 1 bottom is provided with the exhaust outlet 12 parallel with brake pipe 4 before the valve.Be provided with intercommunicating pore 13 below the guiding valve 7 on valve chamber 8 sidewalls, intercommunicating pore 13 is located along the same line with the axis of exhaust outlet 12.The size in preceding runner hole 11 and runner hole, back 14 should guarantee, when the axis of brake pipe 4 and valve rear brake duct 5 before axis and the valve of work through hole 3 becomes 60 °～120 °, when promptly making spool 2 turn over 60 ° or 120 ° with respect to valve body 1 by turning handle 6, exhaust outlet 12 and intercommunicating pore 13, brake pipe 4 and valve chamber 8 and valve rear brake duct 5 begin to be communicated with valve chamber 8 before the valve, when spool 2 turns over 90 ° with respect to valve body 1, the brake pipe 4 before the axis of through hole 3 and the valve of promptly working, when the axis of valve rear brake duct 5 becomes 90 °, preceding runner hole 11, back runner hole 14 is in complete opening state, and exhaust outlet 12 is in breakthrough status with intercommunicating pore 13.The cylinder end face of guiding valve 7 is equipped with packing seal 17 (see figure 5)s by bolt 16, itself and valve chamber 8 roof cooperatings, and bolt 16 also plays the effect into the pressure spring guiding simultaneously.Guiding valve 7 end faces also can be frustum shape (see figure 6)s, and the column part of guiding valve 7 also can stretch in the vertical part in preceding runner hole.When its end face is frustum shape shape, the opening cooperating of frustum face and valve chamber 8 roofs.Guiding valve 7 bottoms are provided with the spring perch 15 with its flange one, spool 2 bottoms are equipped with spring cover 22 by screw thread, the effect of spring perch 15 is to make things convenient on the one hand the installation of pressure spring 10, plays directional tagging on the other hand in guiding valve 7 downward movement processes.Installation for convenience, processing, cost-cutting also can be provided with the valve pocket 21 with several through holes in spool in addition.
When using brake tube for railway vehicle shutoff valve of the present utility model, because malfunction or carelessness or when having closed one of them shutoff valve artificially, pressure air in the brake pipe can act on the end face of guiding valve 7 and the flange upper surface of guiding valve 7 respectively by preceding runner hole 11 and runner hole, back 14, make guiding valve 7 descending and open exhaust outlet 12, get rid of brake pipe internal pressure air, make the brake pipe decompression and realize braking, at this moment, if train does not also start, then owing to brake action is difficult to start, if train is in running state, then sudden stop has been avoided dangerous generation.
When brake tube for railway vehicle shutoff valve of the present utility model is positioned at back, final section compartment, when promptly being positioned at the tail end of train, for brake pipe internal pressure before making valve keeps constant and need be in closed condition always.At this moment, the valve rear brake duct leads to atmosphere, and the pressure that acts on the guiding valve flange is zero, and 7 in guiding valve bears the pressure effect in the preceding brake pipe of valve, and the pressure in the preceding brake pipe of valve is less than pressure spring 10 application forces, so the roof of guiding valve 7 and valve chamber always is in sealing state.
Claims (9)
1. brake tube for railway vehicle shutoff valve, comprise and have the preceding brake pipe (4) of valve and the valve body (1) of valve rear brake duct (5) and the spool with work through hole (3) (2) that cooperates with valve body (1), it is characterized in that the interior bottom of described spool (2) is provided with valve chamber (8), be provided with guiding valve (7) in the described valve chamber (8), be provided with pressure spring (10) between the bottom of guiding valve (7) and the spool (2), described guiding valve (7) is a cylindrical shape, and the bottom is a flange, this flange periphery and valve chamber (8) sidewall running-fit; The preceding runner hole (11) that becomes 90 ° of positions to be provided with to be communicated with the center of described work through hole (3) on the outside face of described spool (2) with valve chamber (8), be somebody's turn to do trend or the inclination vertical in preceding runner hole (11), and be opened on the roof of valve chamber (8) with the axis of described spool (2); On the outside face of spool (2) with described before be provided with the back runner hole (14) of communication valve rear brake duct (5) and valve chamber (8) on the relative another side in runner hole (11), or the inclination vertical of the trend in this runner hole, back (14) with the axis of described spool (2), and be opened on valve chamber (8) top side wall; Valve body (1) bottom is provided with the exhaust outlet (12) parallel with brake pipe (4) before the described valve; Valve chamber (8) sidewall bottom is provided with intercommunicating pore (13), and this intercommunicating pore (13) is perpendicular to the axis of spool (2), and is positioned on the same axis with exhaust outlet (12).
2. brake tube for railway vehicle shutoff valve according to claim 1 is characterized in that described guiding valve (7) cylinder end face is equipped with packing seal (17) by bolt (16).
3. brake tube for railway vehicle shutoff valve according to claim 1 and 2 is characterized in that described guiding valve (7) cylinder end face stretches in the vertical part of described preceding runner.
4. brake tube for railway vehicle shutoff valve according to claim 1 and 2 is characterized in that described guiding valve (7) end face is the frustum shape, and the bottom is provided with the spring perch (15) with described flange one.
5. brake tube for railway vehicle shutoff valve according to claim 3 is characterized in that described guiding valve (7) end face is the frustum shape, and the bottom is provided with the spring perch (15) with described flange one.
6. brake tube for railway vehicle shutoff valve according to claim 1 and 2 is characterized in that being equipped with between described guiding valve (7) and the spool (2) valve pocket (21) with some through holes.
7. brake tube for railway vehicle shutoff valve according to claim 3 is characterized in that being equipped with between described guiding valve (7) and the spool (2) valve pocket (21) with some through holes.
8. brake tube for railway vehicle shutoff valve according to claim 4 is characterized in that being equipped with between described guiding valve (7) and the spool (2) valve pocket (21) with some through holes.
9. brake tube for railway vehicle shutoff valve according to claim 5 is characterized in that being equipped with between described guiding valve (7) and the spool (2) valve pocket (21) with some through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285093 CN2576556Y (en) | 2002-11-06 | 2002-11-06 | Brake-tube stop valve of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285093 CN2576556Y (en) | 2002-11-06 | 2002-11-06 | Brake-tube stop valve of railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2576556Y true CN2576556Y (en) | 2003-10-01 |
Family
ID=33746204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02285093 Expired - Fee Related CN2576556Y (en) | 2002-11-06 | 2002-11-06 | Brake-tube stop valve of railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2576556Y (en) |
-
2002
- 2002-11-06 CN CN 02285093 patent/CN2576556Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |