CN204296699U - A kind of railway brake valve pressure signal conversion equipment - Google Patents
A kind of railway brake valve pressure signal conversion equipment Download PDFInfo
- Publication number
- CN204296699U CN204296699U CN201420767430.1U CN201420767430U CN204296699U CN 204296699 U CN204296699 U CN 204296699U CN 201420767430 U CN201420767430 U CN 201420767430U CN 204296699 U CN204296699 U CN 204296699U
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- CN
- China
- Prior art keywords
- plunger
- pressure interface
- plunger bushing
- valve body
- ring seals
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- 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- Withdrawn - After Issue
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a kind of railway brake valve pressure signal conversion equipment, comprise valve body, plunger bushing is provided with in described valve body, plunger bushing inside is provided with plunger, spring is provided with above plunger, spring seat is provided with above spring, adjustment screw is provided with above spring seat, valve gap is provided with above described valve body, locking nut is provided with above valve gap, described plunger bushing outer surface is provided with three O-ring seals A, described outer plunger surface is provided with two O-ring seals B.The utility model is by the change of plunger position in plunger bushing, realize being communicated with and the disconnection of incoming pressure interface and delivery pressure interface of incoming pressure interface and delivery pressure interface respectively, thus according to the pressure set, the pilot pressure signal of input is converted to the opening and closing signal of pressure, and before pressure signal conversion equipment uses, upper-lower position also by adjusting screw adjusts the pretightening force of spring, thus the switching to pressure of setting open and-shut mode.
Description
Technical field
The utility model relates to a kind of railway brake valve pressure signal conversion equipment.
Background technique
In railway brake valve product, need the pressure signal of instability to be converted to stable open and-shut mode signal, the pressure signal conversion equipment that therefore Structure of need is simple, reliability is high.
Model utility content
Goal of the invention of the present utility model is: for above-mentioned Problems existing, provides 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 conversion equipment exported.
The technical solution of the utility model is achieved in that a kind of railway brake valve pressure signal conversion equipment, 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 pilot pressure interface, described valve body side is provided with incoming pressure interface and delivery pressure interface;
Plunger bushing is provided with in described valve body, plunger is provided with in described plunger bushing, in described plunger bushing periphery, between plunger bushing and valve interior wall, be provided with three O-ring seals A, vent slot A and vent slot B is provided with on described plunger bushing, between adjacent two O-ring seals A, described vent slot A and incoming pressure orifice, described vent slot B and delivery pressure orifice, in described plunger periphery, be provided with annular groove between plunger and plunger bushing, on described plunger, annular groove upper and lower is respectively arranged with O-ring seals B;
The adjustment screw of band center hole, the spring seat being with through hole and spring is provided with in described valve gap, described adjustment screw upper end is connected with locking nut through valve gap, described adjustment screw lower end abutment is in spring seat upper-end surface, described spring upper end is resisted against spring seat lower end surface, and its lower end abutment is in its upper end face;
Described plunger is in plunger bushing during limit inferior position, and described vent slot A and vent slot B disconnects, now, described delivery pressure interface is inner through vent slot B, plunger bushing, valve gap inner after be communicated with air by the center hole of adjustment screw; Described plunger is in plunger bushing during limes superiors position, and described incoming pressure interface is by annular groove and delivery pressure orifice, and now, described delivery pressure interface and ambient air passage disconnect, and incoming pressure is equal with delivery pressure.
Railway brake valve pressure signal conversion equipment described in the utility model, it is provided with three aprons slots at described plunger bushing outer surface, 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 bushing during limit inferior position, O-ring seals B cut-out delivery pressure interface above described annular groove is communicated with annular groove, described plunger is in plunger bushing 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 conversion equipment described in the utility model, its upside in described valve body is provided with internal thread, and on the downside of described valve gap outer surface, be provided with outside thread, described valve body is threaded with valve gap.
Railway brake valve pressure signal conversion equipment described in the utility model, adjusts screw and is threaded with valve gap described in it, by the upper-lower position of adjustment adjustment screw, can change the pretightening force of spring.
The utility model is by the change of plunger position in plunger bushing, realize being communicated with and the disconnection of incoming pressure interface and delivery pressure interface of incoming pressure interface and delivery pressure interface respectively, thus according to the pressure set, the pilot pressure signal of input is converted to the opening and closing signal of pressure, and before pressure signal conversion equipment uses, upper-lower position also by adjusting screw adjusts the pretightening force of spring, thus the switching to pressure of setting open and-shut mode.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model when " closedown " position state.
Fig. 2 is the schematic diagram of the utility model when open to the outside world position state.
Mark in figure: 1 is valve body, and 2 is valve gap, and 3 is pilot pressure interface, 4 is incoming pressure interface, and 5 is delivery pressure interface, and 6 is plunger bushing, 7 is plunger, and 8 is O-ring seals A, and 9 is vent slot A, 10 is vent slot 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 seat, 16 is spring, and 17 is locking nut, and 18 is through hole.
Embodiment
Below in conjunction with accompanying drawing, this utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain this utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of railway brake valve pressure signal conversion equipment, comprise valve body 1 and valve gap 2, in described valve body 1, upside is provided with internal thread, outside thread is provided with on the downside of described valve gap 2 outer surface, described valve body 1 is threaded togather with valve gap 2, described valve body 1 lower end surface is provided with pilot pressure interface 3, described valve body 1 side is provided with incoming pressure interface 4 and delivery pressure interface 5.
Wherein, plunger bushing 6 is provided with in described valve body 1, plunger 7 is provided with in described plunger bushing 6, in described plunger bushing 6 periphery, three O-ring seals A8 are provided with between plunger bushing 6 and valve body 1 inwall, on described plunger bushing 6, vent slot A9 and vent slot B10 is provided with between adjacent two O-ring seals A8, described vent slot A9 is communicated with incoming pressure interface 4, described vent slot B10 is communicated with delivery pressure interface 5, in described plunger 7 periphery, annular groove 11 is provided with between plunger 7 and plunger bushing 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 center hole 13, the spring seat 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 locking 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 pretightening force of spring 16 can be changed, described adjustment screw 14 lower end abutment is in spring seat 15 upper-end surface, described spring 16 upper end is resisted against spring seat 15 lower end surface, and its lower end abutment is in plunger 7 upper-end surface.
When described plunger 7 is in plunger bushing 6 during limit inferior position, described vent slot A9 and vent slot B10 disconnects, and now, described delivery pressure interface 5 is inner through vent slot B10, plunger bushing 6, be communicated with air by the center hole 13 of adjustment screw 14 behind valve gap 2 inside; Described plunger 7 is in plunger bushing 6 during limes superiors position, and described incoming 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 incoming pressure is equal with delivery pressure.
Wherein, described plunger bushing 6 outer surface 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 bushing and valve body and between two vent slots, described plunger 7 outer surface 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 bushing, described plunger 7 is in plunger bushing 6 during limit inferior 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 bushing 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.
Working principle of the present utility model is:
Before pressure signal conversion equipment uses, adjusted the pretightening force of spring by the upper-lower position of adjustment adjustment screw, thus the switching to pressure of setting open and-shut mode.
(1) when "Off" state, as shown in Figure 1, when pilot pressure is lower than the pressure preset, pressure signal conversion equipment is in "Off" state.Now, because pilot pressure is lower, cannot promote plunger moves to plunger bushing upper extreme position, namely plunger is positioned at plunger bushing lower limit position, therefore the annular groove on plunger cannot be communicated with vent slot A on plunger bushing and vent slot B, therefore, the pressurized air entered from incoming pressure interface cannot enter delivery pressure interface.Simultaneously, path between delivery pressure interface and air (vent slot B → plunger bushing inside → valve gap of delivery pressure interface → plunger bushing is inner → and adjust the center 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 pilot pressure is higher than the pressure preset, pressure signal conversion equipment is in open to the outside world state.Now, because pilot pressure is higher, can promote upper extreme position plunger moving to plunger bushing, the annular groove therefore on plunger can be communicated with vent slot A on plunger bushing and vent slot B, therefore, the pressurized air entered from incoming pressure interface can enter delivery pressure interface.Simultaneously, path between delivery pressure interface and air (vent slot B → plunger bushing inside → valve gap of delivery pressure interface → plunger bushing is inner → adjust the center 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 incoming pressure, form open to the outside world state.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a railway brake valve pressure signal conversion equipment, 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 end surface is provided with pilot pressure interface (3), be provided with incoming pressure interface (4) and delivery pressure interface (5) in described valve body (1) side;
Plunger bushing (6) is provided with in described valve body (1), plunger (7) is provided with in described plunger bushing (6), in described plunger bushing (6) periphery, three O-ring seals A(8 are provided with) between plunger bushing (6) and valve body (1) inwall, on described plunger bushing (6), adjacent two O-ring seals A(8) between be provided with vent slot A(9) and vent slot B(10), described vent slot A(9) be communicated with incoming pressure interface (4), described vent slot 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 bushing (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 center hole (13), the spring seat (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 locking nut (17) through valve gap (2), described adjustment screw (14) lower end abutment is in spring seat (15) upper-end surface, described spring (16) upper end is resisted against spring seat (15) lower end surface, and its lower end abutment is in plunger (7) upper-end surface;
Described plunger (7) is in plunger bushing (6) during limit inferior position, described vent slot A(9) and vent slot B(10) disconnect, now, described delivery pressure interface (5) is through vent slot B(10), plunger bushing (6) is communicated with air by the center hole (13) of adjustment screw (14) behind inner, valve gap (2) inside; Described plunger (7) is in plunger bushing (6) during limes superiors position, described incoming 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 incoming pressure is equal with delivery pressure.
2. railway brake valve pressure signal conversion equipment according to claim 1, it is characterized in that: described plunger bushing (6) outer surface is provided with three aprons slots, described three O-ring seals A(8) be separately positioned in corresponding aprons slot, described plunger (7) outer surface 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 bushing (6) during limit inferior 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 bushing (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 conversion equipment according to claim 1, it is characterized in that: in described valve body (1), upside is provided with internal thread, on the downside of described valve gap (2) outer surface, be provided with outside thread, described valve body (1) is threaded with valve gap (2).
4. the railway brake valve pressure signal conversion equipment 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 pretightening force of spring (16) can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420767430.1U CN204296699U (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 |
|---|---|---|---|
| CN201420767430.1U CN204296699U (en) | 2014-12-09 | 2014-12-09 | A kind of railway brake valve pressure signal conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204296699U true CN204296699U (en) | 2015-04-29 |
Family
ID=53102267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420767430.1U Withdrawn - After Issue CN204296699U (en) | 2014-12-09 | 2014-12-09 | A kind of railway brake valve pressure signal conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204296699U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442786A (en) * | 2014-12-09 | 2015-03-25 | 四川制动科技股份有限公司 | Pressure signal conversion device for railway brake valves |
| CN106468370A (en) * | 2015-08-21 | 2017-03-01 | 上海电气电站设备有限公司 | Double-deck valve gap for hoisting type valve |
| CN109812606A (en) * | 2019-04-02 | 2019-05-28 | 威海旭日过滤器有限公司 | A kind of exhaust valve |
-
2014
- 2014-12-09 CN CN201420767430.1U patent/CN204296699U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442786A (en) * | 2014-12-09 | 2015-03-25 | 四川制动科技股份有限公司 | Pressure signal conversion device for railway brake valves |
| CN106468370A (en) * | 2015-08-21 | 2017-03-01 | 上海电气电站设备有限公司 | Double-deck valve gap for hoisting type valve |
| CN109812606A (en) * | 2019-04-02 | 2019-05-28 | 威海旭日过滤器有限公司 | A kind of exhaust valve |
| CN109812606B (en) * | 2019-04-02 | 2024-02-09 | 威海旭日过滤器股份有限公司 | Exhaust valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20161019 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |