CN104442786A - Pressure signal conversion device for railway brake valves - Google Patents
Pressure signal conversion device for railway brake valves Download PDFInfo
- Publication number
- CN104442786A CN104442786A CN201410744570.1A CN201410744570A CN104442786A CN 104442786 A CN104442786 A CN 104442786A CN 201410744570 A CN201410744570 A CN 201410744570A CN 104442786 A CN104442786 A CN 104442786A
- Authority
- CN
- China
- Prior art keywords
- plunger
- plunger sleeve
- valve body
- pressure interface
- air channel
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/021—Railway control or brake valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a pressure signal conversion device for railway brake valves. The pressure signal conversion device comprises a valve body. A plunger sleeve is arranged in the valve body and internally provided with a plunger. A spring is arranged upon the plunger and under a spring seat. An adjusting screw is arranged upon the spring seat. A valve cover is arranged upon the valve body and arranged under a locking nut. Three O-shaped sealing rings A are arranged on the outer surface of the plunger sleeve. Two O-shaped sealing rings B are arranged on the outer surface of the plunger. As the plunger moves in the plunger sleeve, an input pressure interface is communicated or disconnected with an output pressure interface, in this way, according to the preset pressure, an input control pressure signal is conversed into an open-close signal of the pressure, and before the pressure signal conversion device is used, pre-tightening force of the spring can be adjusted by vertically adjusting the screw, thus conversion pressure of the open-close state is set.
Description
Technical field
The present invention relates to a kind of railway brake valve pressure signal transfer device.
Background technology
In railway brake valve product, need the pressure signal of instability to be converted to stable open and-shut mode signal, the pressure signal transfer device that therefore Structure of need is simple, reliability is high.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, provide a kind of and the pressure signal of instability can be converted to stable open and-shut mode signal and the railway brake valve pressure signal transfer device exported.
Technical scheme of the present invention is achieved in that a kind of railway brake valve pressure signal transfer device, comprise valve body and valve gap, described valve body and valve gap link together, it is characterized in that: described valve body lower end face is provided with control presssure interface, described valve body side is provided with input pressure interface and delivery pressure interface;
Plunger sleeve is provided with in described valve body, plunger is provided with in described plunger sleeve, in described plunger sleeve periphery, between plunger sleeve and valve interior wall, be provided with three O-ring seals A, air channel A and air channel B is provided with on described plunger sleeve, between adjacent two O-ring seals A, described air channel A and input pressure orifice, described air channel B and delivery pressure orifice, in described plunger periphery, be provided with annular groove between plunger and plunger sleeve, on described plunger, annular groove upper and lower is respectively arranged with O-ring seals B;
The adjustment screw of band centre hole, the spring perch being with through hole and spring is provided with in described valve gap, described adjustment screw upper end is connected with jam nut through valve gap, described adjustment screw lower end abutment is in spring perch upper surface, described spring upper end is resisted against spring perch lower surface, and its lower end abutment is in its upper end face;
Described plunger is in plunger sleeve during smallest limit position, and described air channel A and air channel B disconnects, now, described delivery pressure interface is inner through air channel B, plunger sleeve, valve gap inner after be communicated with air by the centre hole of adjustment screw; Described plunger is in plunger sleeve during limes superiors position, and described input pressure interface is by annular groove and delivery pressure orifice, and now, described delivery pressure interface and ambient air passage disconnect, and input pressure is equal with delivery pressure.
Railway brake valve pressure signal transfer device of the present invention, it is provided with three aprons slots at described plunger sleeve outside face, described three O-ring seals A are separately positioned in corresponding aprons slot, described outer plunger surface is provided with two aprons slots, described O-ring seals B is separately positioned in corresponding aprons slot, described plunger is in plunger sleeve during smallest limit position, O-ring seals B cut-out delivery pressure interface above described annular groove is communicated with annular groove, described plunger is in plunger sleeve during limes superiors position, O-ring seals B cut-out delivery pressure interface above described annular groove is communicated with ambient air passage.
Railway brake valve pressure signal transfer device of the present invention, its upside in described valve body is provided with negative thread, and on the downside of described valve gap outside face, be provided with outside thread, described valve body is threaded with valve gap.
Railway brake valve pressure signal transfer device of the present invention, adjusts screw and is threaded with valve gap described in it, by the upper-lower position of adjustment adjustment screw, can change the predetermincd tension of spring.
The present invention is by the change of plunger position in plunger sleeve, realize being communicated with and the disconnection of input pressure interface and delivery pressure interface of input pressure interface and delivery pressure interface respectively, thus according to the pressure set, the control presssure signal of input is converted to the opening and closing signal of pressure, and before pressure signal transfer device uses, upper-lower position also by adjusting screw adjusts the predetermincd tension of spring, thus the transfer pressure of setting open and-shut mode.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention when " closedown " position state.
Fig. 2 is the schematic diagram of the present invention when open to the outside world position state.
Mark in figure: 1 is valve body, and 2 is valve gap, and 3 is control presssure interface, 4 is input pressure interface, and 5 is delivery pressure interface, and 6 is plunger sleeve, 7 is plunger, and 8 is O-ring seals A, and 9 is air channel A, 10 is air channel B, and 11 is annular groove, and 12 is O-ring seals B, hole centered by 13,14 is adjustment screw, and 15 is spring perch, 16 is spring, and 17 is jam nut, and 18 is through hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, this present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain this present invention, be not intended to limit the present invention.
As shown in Figure 1, a kind of railway brake valve pressure signal transfer device, comprise valve body 1 and valve gap 2, in described valve body 1, upside is provided with negative thread, outside thread is provided with on the downside of described valve gap 2 outside face, described valve body 1 is threaded togather with valve gap 2, described valve body 1 lower surface is provided with control presssure interface 3, described valve body 1 side is provided with input pressure interface 4 and delivery pressure interface 5.
Wherein, plunger sleeve 6 is provided with in described valve body 1, plunger 7 is provided with in described plunger sleeve 6, in described plunger sleeve 6 periphery, three O-ring seals A8 are provided with between plunger sleeve 6 and valve body 1 inwall, on described plunger sleeve 6, air channel A9 and air channel B10 is provided with between adjacent two O-ring seals A8, described air channel A9 is communicated with input pressure interface 4, described air channel B10 is communicated with delivery pressure interface 5, in described plunger 7 periphery, annular groove 11 is provided with between plunger 7 and plunger sleeve 6, on described plunger 7, annular groove 11 upper and lower is respectively arranged with O-ring seals B12, the adjustment screw 14 of band centre hole 13, the spring perch 15 being with through hole 18 and spring 16 is provided with in described valve gap 2, described adjustment screw 14 upper end is connected with jam nut 17 through valve gap 2, adjustment screw and valve gap are fixedly positioning, described adjustment screw 14 is threaded with valve gap 2, by the upper-lower position of adjustment adjustment screw 14, the predetermincd tension of spring 16 can be changed, described adjustment screw 14 lower end abutment is in spring perch 15 upper surface, described spring 16 upper end is resisted against spring perch 15 lower surface, and its lower end abutment is in plunger 7 upper surface.
When described plunger 7 is in plunger sleeve 6 during smallest limit position, described air channel A9 and air channel B10 disconnects, and now, described delivery pressure interface 5 is inner through air channel B10, plunger sleeve 6, be communicated with air by the centre hole 13 of adjustment screw 14 behind valve gap 2 inside; Described plunger 7 is in plunger sleeve 6 during limes superiors position, and described input pressure interface 4 is communicated with delivery pressure interface 5 by annular groove 11, and now, described delivery pressure interface 5 disconnects with ambient air passage, and input pressure is equal with delivery pressure.
Wherein, described plunger sleeve 6 outside face is provided with three aprons slots, described three O-ring seals A8 are separately positioned in corresponding aprons slot, thus ensure the sealing between plunger sleeve and valve body and between two air channels, described plunger 7 outside face is provided with two aprons slots, described O-ring seals B12 is separately positioned in corresponding aprons slot, thus ensure the sealing between plunger and plunger sleeve, described plunger 7 is in plunger sleeve 6 during smallest limit position, O-ring seals B12 cut-out delivery pressure interface 5 above described annular groove 11 is communicated with annular groove 11, described plunger 7 is in plunger sleeve 6 during limes superiors position, O-ring seals B12 cut-out delivery pressure interface 5 above described annular groove 11 is communicated with ambient air passage.
Principle of work of the present invention is:
Before pressure signal transfer device uses, adjusted the predetermincd tension of spring by the upper-lower position of adjustment adjustment screw, thus the transfer pressure of setting open and-shut mode.
(1) when "Off" state, as shown in Figure 1, when control presssure is lower than the pressure preset, pressure signal transfer device is in "Off" state.Now, because control presssure is lower, cannot promote plunger moves to plunger sleeve upper extreme position, namely plunger is positioned at plunger sleeve lower limit position, therefore the annular groove on plunger cannot be communicated with air channel A on plunger sleeve and air channel B, therefore, the pressurized air entered from input pressure interface cannot enter delivery pressure interface.Simultaneously, path between delivery pressure interface and air (air channel B → plunger sleeve inside → valve gap of delivery pressure interface → plunger sleeve is inner → and adjust the centre hole → air of screw) be open state, the pressurized air connected with delivery pressure interface is discharged smoothly, thus make delivery pressure be 0, form "Off" state.
(2) when open to the outside world state, as shown in Figure 2, when control presssure is higher than the pressure preset, pressure signal transfer device is in open to the outside world state.Now, because control presssure is higher, can promote upper extreme position plunger moving to plunger sleeve, the annular groove therefore on plunger can be communicated with air channel A on plunger sleeve and air channel B, therefore, the pressurized air entered from input pressure interface can enter delivery pressure interface.Simultaneously, path between delivery pressure interface and air (air channel B → plunger sleeve inside → valve gap of delivery pressure interface → plunger sleeve is inner → adjust the centre hole → air of screw) is closed by the O-ring seals B above the annular groove of plunger that moves on, the pressurized air connected with delivery pressure interface can not discharged to air, thus make delivery pressure equal with input pressure, form open to the outside world state.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a railway brake valve pressure signal transfer device, comprise valve body (1) and valve gap (2), described valve body (1) and valve gap (2) link together, it is characterized in that: described valve body (1) lower surface is provided with control presssure interface (3), be provided with input pressure interface (4) and delivery pressure interface (5) in described valve body (1) side;
Plunger sleeve (6) is provided with in described valve body (1), plunger (7) is provided with in described plunger sleeve (6), in described plunger sleeve (6) periphery, three O-ring seals A(8 are provided with) between plunger sleeve (6) and valve body (1) inwall, on described plunger sleeve (6), adjacent two O-ring seals A(8) between be provided with air channel A(9) and air channel B(10), described air channel A(9) be communicated with input pressure interface (4), described air channel B(10) be communicated with delivery pressure interface (5), in described plunger (7) periphery, annular groove (11) is provided with between plunger (7) and plunger sleeve (6), on described plunger (7), annular groove (11) upper and lower is respectively arranged with O-ring seals B(12),
The adjustment screw (14) of band centre hole (13), the spring perch (15) being with through hole (18) and spring (16) is provided with in described valve gap (2), described adjustment screw (14) upper end is connected with jam nut (17) through valve gap (2), described adjustment screw (14) lower end abutment is in spring perch (15) upper surface, described spring (16) upper end is resisted against spring perch (15) lower surface, and its lower end abutment is in plunger (7) upper surface;
Described plunger (7) is in plunger sleeve (6) during smallest limit position, described air channel A(9) and air channel B(10) disconnect, now, described delivery pressure interface (5) is through air channel B(10), plunger sleeve (6) is communicated with air by the centre hole (13) of adjustment screw (14) behind inner, valve gap (2) inside; Described plunger (7) is in plunger sleeve (6) during limes superiors position, described input pressure interface (4) is communicated with delivery pressure interface (5) by annular groove (11), now, described delivery pressure interface (5) and ambient air passage disconnect, and input pressure is equal with delivery pressure.
2. railway brake valve pressure signal transfer device according to claim 1, it is characterized in that: described plunger sleeve (6) outside face is provided with three aprons slots, described three O-ring seals A(8) be separately positioned in corresponding aprons slot, described plunger (7) outside face is provided with two aprons slots, described O-ring seals B(12) be separately positioned in corresponding aprons slot, described plunger (7) is in plunger sleeve (6) during smallest limit position, the O-ring seals B(12 of described annular groove (11) top) cut off being communicated with of delivery pressure interface (5) and annular groove (11), described plunger (7) is in plunger sleeve (6) during limes superiors position, the O-ring seals B(12 of described annular groove (11) top) cut off being communicated with of delivery pressure interface (5) and ambient air passage.
3. railway brake valve pressure signal transfer device according to claim 1, it is characterized in that: in described valve body (1), upside is provided with negative thread, on the downside of described valve gap (2) outside face, be provided with outside thread, described valve body (1) is threaded with valve gap (2).
4. the railway brake valve pressure signal transfer device according to claim 1,2 or 3, it is characterized in that: described adjustment screw (14) is threaded with valve gap (2), by the upper-lower position of adjustment adjustment screw (14), the predetermincd tension of spring (16) can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744570.1A CN104442786B (en) | 2014-12-09 | 2014-12-09 | A kind of railway brake valve pressure signal conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744570.1A CN104442786B (en) | 2014-12-09 | 2014-12-09 | A kind of railway brake valve pressure signal conversion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104442786A true CN104442786A (en) | 2015-03-25 |
| CN104442786B CN104442786B (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744570.1A Active CN104442786B (en) | 2014-12-09 | 2014-12-09 | A kind of railway brake valve pressure signal conversion equipment |
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| Country | Link |
|---|---|
| CN (1) | CN104442786B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321891A (en) * | 2015-07-02 | 2017-01-11 | 保时捷股份公司 | Switching valve and internal combustion engine |
| CN110836848A (en) * | 2019-11-15 | 2020-02-25 | 眉山中车制动科技股份有限公司 | Method and device for detecting friction force of O-shaped sealing ring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007051150A1 (en) * | 2007-04-23 | 2008-11-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Parking brake valve for commercial vehicle, has deaerating valve seat, which is closed by deaerating operating output, so that operating pressure is adjusted at operating output, where operating pressure depends on control pressure |
| CN202152877U (en) * | 2010-11-22 | 2012-02-29 | 四川制动科技股份有限公司 | Pneumatic control valve |
| CN103318161A (en) * | 2013-07-08 | 2013-09-25 | 瑞立集团瑞安汽车零部件有限公司 | Interception valve |
| CN203477394U (en) * | 2013-07-29 | 2014-03-12 | 瑞立集团瑞安汽车零部件有限公司 | Two-position two-way reversing valve |
| CN204296699U (en) * | 2014-12-09 | 2015-04-29 | 四川制动科技股份有限公司 | A kind of railway brake valve pressure signal conversion equipment |
-
2014
- 2014-12-09 CN CN201410744570.1A patent/CN104442786B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007051150A1 (en) * | 2007-04-23 | 2008-11-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Parking brake valve for commercial vehicle, has deaerating valve seat, which is closed by deaerating operating output, so that operating pressure is adjusted at operating output, where operating pressure depends on control pressure |
| CN202152877U (en) * | 2010-11-22 | 2012-02-29 | 四川制动科技股份有限公司 | Pneumatic control valve |
| CN103318161A (en) * | 2013-07-08 | 2013-09-25 | 瑞立集团瑞安汽车零部件有限公司 | Interception valve |
| CN203477394U (en) * | 2013-07-29 | 2014-03-12 | 瑞立集团瑞安汽车零部件有限公司 | Two-position two-way reversing valve |
| CN204296699U (en) * | 2014-12-09 | 2015-04-29 | 四川制动科技股份有限公司 | A kind of railway brake valve pressure signal conversion equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321891A (en) * | 2015-07-02 | 2017-01-11 | 保时捷股份公司 | Switching valve and internal combustion engine |
| CN110836848A (en) * | 2019-11-15 | 2020-02-25 | 眉山中车制动科技股份有限公司 | Method and device for detecting friction force of O-shaped sealing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104442786B (en) | 2017-01-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Applicant after: Meisha Zhongke Brake Technology Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Applicant before: Sichuan Brake Science and Technology Co. Ltd. |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |