CN207374366U

CN207374366U - A kind of emergency braking vent valve

Info

Publication number: CN207374366U
Application number: CN201721251361.9U
Authority: CN
Inventors: 王成名
Original assignee: NINGBO GUOCHUANG LOCOMOTIVE EQUIPMENT Co Ltd
Current assignee: NINGBO GUOCHUANG LOCOMOTIVE EQUIPMENT Co Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2018-05-18
Anticipated expiration: 2027-09-27

Abstract

The utility model provides a kind of emergency braking vent valve, including valve body, valve deck, spool, push rod and retaining mechanism, inlet air plenum and room of leaking informaton are equipped in the valve body, valve port is equipped between the inlet air plenum and room of leaking informaton, it is to be detachably connected between the valve deck and valve body, thrust spring is equipped between the valve deck and the bottom of spool, valve port is withstood at the top of the spool, the vent valve is made to be in normally off, one end of the push rod penetrates to contradict with the top of spool in valve body and connect, limiting slot there are two being set on the push rod, it is corresponding with the position of the spool, respectively upper locking slot and lower locking slot, the retaining mechanism is connected with limiting slot.Emergency braking vent valve in the utility model has the function of locking spool, and simple in structure, can realize and quickly and effectively leak informaton.

Description

A kind of emergency braking vent valve

Technical field

The utility model is related to the braking technology fields of rail vehicle, and in particular to a kind of emergency braking vent valve.

Background technology

Emergency braking portion is generally all arranged to what is directly controlled by the atmospheric pressure of train brake pipe by modern locomotive vehicle Emergency vent valve, emergency vent valve are a particularly important individual components in locomotive brake gear, it can receive it is various in the case of Emergency braking train brake pipe decompression rate, the air of train brake pipe is made to arrange to air, realizes fast braking.Wherein, tightly The spool of anxious vent valve is directly controlled by the atmospheric pressure in train brake pipe, is inflated by train brake pipe to inlet air plenum, Spool both sides form pressure difference and carry out balance valve core, and in emergency braking, the pressure of train brake pipe drastically declines, both sides above and below spool Larger pressure difference is generated, the elastic force of thrust spring can be overcome and moved down, open-top vent valve, moment drains train brake pipe Pressure air generates emergency braking effect.

But above-mentioned emergency braking has a problem that, spool depends merely on atmospheric pressure control position, spool position when opening Extremely unstable, exhaust efficiency is low, influences the braking effect of emergency vent valve.

In view of drawbacks described above, the utility model creator obtains this practicality newly finally by prolonged research and practice Type.

Utility model content

To solve the above problems, the technical solution adopted in the utility model is, a kind of emergency braking vent valve is provided, is wrapped It includes valve body, valve deck, spool, push rod and retaining mechanism, is equipped with inlet air plenum and room of leaking informaton in the valve body, the inlet air plenum and leak informaton Valve port is equipped between room, is equipped with and pushes away to be detachably connected between the valve deck and valve body, between the valve deck and the bottom of spool Power spring withstands valve port at the top of the spool, the vent valve is made to be in normally off, one end of the push rod penetrates valve body The interior top with spool, which contradicts, to be connected, and is set on the push rod there are two limiting slot, corresponding with the position of the spool, respectively For upper locking slot and lower locking slot, the retaining mechanism is connected with limiting slot.

Further, the retaining mechanism includes steel ball A, retaining spring and the tune for adjusting the retaining spring stroke Bolt is saved, the steel ball A is withstood by retaining spring to be fallen into one of limiting slot.

Further, state communication means are further included, including steel ball B, switch module and quick-action switch, the steel ball B is set Between push rod and switch module, the switch module is contradicted with quick-action switch and connected, and the steel ball B moves up and down reality with push rod Existing its moves left and right, and so as to which the switch module be driven to move left and right, completes the energization switching of the quick-action switch, the quick-action Switch is connected with indicator light or display, and the "on" position of the quick-action switch is corresponding with the open and-shut mode of vent valve.

Further, the switch module includes switch spring, switch spring seat, adjusting screw rod and switch displaced block, described Switch spring is arranged in switch spring seat, and is socketed on the adjusting screw rod, and described adjusting screw rod one end is equipped with external screw thread, It is connected with the switch displaced block, the other end is conformed with and cone tank, and the protrusion is used for switching spring retainer, the cone Shape slot is contradicted with steel ball B and connected.

Further, the limiting slot is dovetail groove, and trapezoidal side and the angle on lower trapezoid side and base are obtuse angle thereon, The angle on the upper trapezoid side and base is 90 ° of+α₁, the angle on the lower trapezoid side and base is 90 ° of+α₂。

Further, the α₁Scope for 20 °~60 °, the α₂Scope be 0 °~45 °.

Further, it is additionally provided with sealing device.

Further, dust cover is further included, top edge is connected on the push rod, and lower edge is connected on the valve body, Foreign matter is brought into when entering valve body for anti-throw-out lever.

Further, it is additionally provided with the button being detachably connected with it at the top of the push rod.

The beneficial effects of the utility model are compared with the prior art：1. the emergency braking in the utility model is leaked informaton Valve has the function of locking spool, and simple in structure, can realize and quickly and effectively leak informaton；2. by adjusting the tune of retaining mechanism Bolt or the trapezoidal side of dovetail groove and the angle on base are saved, obtains the effect of optimal locking spool；3. vent valve is sent in real time Open and-shut mode；4. good airproof performance, it is ensured that the operation is stable.

Description of the drawings

Fig. 1 is the sectional view that the utility model emergency braking is leaked informaton under valve closing state；

Fig. 2 is the sectional view that the utility model emergency braking is leaked informaton under the valve opening state；

Fig. 3 is the sectional view of the valve body of the utility model emergency braking vent valve；

Fig. 4 is the structure diagram of the adjusting screw rod of emergency braking vent valve in example IV；

Fig. 5 is that emergency braking is leaked informaton the connection diagram of quick-action switch one under valve closing state in example IV；

Fig. 6 is that emergency braking is leaked informaton the connection diagram of quick-action switch two under valve closing state in example IV；

Fig. 7 is that emergency braking is leaked informaton the circuit diagram of quick-action switch under valve closing state in example IV；

Fig. 8 is that emergency braking is leaked informaton the connection diagram of quick-action switch one under the valve opening state in example IV；

Fig. 9 is that emergency braking is leaked informaton the connection diagram of quick-action switch two under the valve opening state in example IV；

Figure 10 is that emergency braking is leaked informaton the circuit diagram of quick-action switch under the valve opening state in example IV；

Figure 11 is that emergency braking is leaked informaton valve closing state lower push-rod and the connection diagram of steel ball A in embodiment two；

Figure 12 is that emergency braking is leaked informaton the valve opening state lower push-rod and the connection diagram of steel ball A in embodiment two.

Specific embodiment

Below in conjunction with attached drawing, technical characteristic above-mentioned to the utility model and other and advantage are described in more detail.

Embodiment one

Shown in please referring to Fig.1 to Fig.3, the sectional view under valve closing state that leaks informaton for the utility model emergency braking is beaten The sectional view of sectional view and valve body under open state.

With reference to shown in Fig. 1 and Fig. 3, a kind of emergency braking vent valve, including valve body 1, valve deck 2, spool 3, push rod 4 and locking Mechanism, the valve body 1 is interior to be equipped with inlet air plenum 11 and room 12 of leaking informaton, and valve port 6, institute are equipped between the inlet air plenum 11 and room 12 of leaking informaton It states to be detachably connected between valve deck 2 and valve body 1, thrust spring 21 is equipped between the valve deck 2 and the bottom of spool 3, it is described Valve port 6 is withstood at the top of spool 3, and the vent valve is made to be in normally off, and one end of the push rod 4 penetrates in valve body 1 and valve The top of core 3 contradicts connection, and the push rod 4 is equipped with several limiting slots, the preferred quantity of limiting slot described in the present embodiment It is corresponding with the position of the spool 3 for two, the spool 3 is contributed to be accurately positioned, respectively upper locking slot 41 is under Locking slot 42, the retaining mechanism are connected with limiting slot.

As shown in Figure 1, when the vent valve is in off state, the retaining mechanism acts on lower locking slot 42, locking The position of the push rod 4, at this time the spool 3 sealed valve port 6 upwards by the power effect of thrust spring 21, then the inlet air plenum 11 Room 12 isolates with leaking informaton；As shown in Fig. 2, when the push rod 4 is subject to external force effect to move downward, promote the spool 3 downward Movement, the inlet air plenum 11 are communicated with room 12 of leaking informaton so that and the vent valve is in an open state, and realization promptly puts wind action, The retaining mechanism acts on locking slot 41 at this time, locks the position of the push rod 4, so as to play the role of locking spool 3.

Wherein, it is described to be detachably connected as being connected through a screw thread or being clamped connection, the present embodiment between valve deck 2 and valve body 1 Using threaded connection, i.e., described valve deck 2 is equipped with external screw thread, and rotation is fixed on the valve body 1；The valve deck 2 is bottom Groove equipped with thrust spring 21, the groove are equipped with through hole, cause the air and outside air phase in the valve deck 2 It is logical, generate air drag when preventing the spool 3 from being moved up and down in valve deck；The upper and lower ends of the spool 3 are respectively equipped with one A mounting groove, for placing push rod 4, the lower end mounting groove is used to place thrust spring 21, and two the upper end mounting groove Through hole is equipped between mounting groove, is used to prevent the push rod 4 from generating air drag when moving up and down；The push rod 4, spool 3rd, thrust spring 21 and valve deck 2 contradict connection successively between each other, and in the case where the vent valve opens or closes state, mutually It does not depart from, i.e., described push rod 4 only moves up and down in the upper end mounting groove of spool 3, and the spool 3 only moves down on valve deck 2 is interior Dynamic, the thrust spring 21 only stretches in the lower end mounting groove of spool 3 and the groove of valve deck 2.

As shown in figure 3, the top of the valve body 1 is equipped with the through hole 13 passed through for push rod 4, the inlet air plenum 11 and room of leaking informaton 12 are located at the both sides of valve body 1, and the import of the inlet air plenum 11 and the outlet for room 12 of leaking informaton are separately positioned on the bottom of valve body 1, institute The outlet of inlet air plenum 11 is stated less than the import for room of leaking informaton, is connected between the two by valve port 6, the vent valve is contributed to close Spool 3 seals valve port during state；As shown in Figure 1, the push rod 4 is equipped with limiting stand 43, outer diameter is more than the through hole 13 Internal diameter, when needing to close the vent valve, the push rod 4 moves up, and the steel ball A 51 is fallen into lower locking slot 42, this Shi Suoshu limiting stands 43 are used to prevent when the push rod from moving up since maloperation causes by the end face bumping post in valve body 1 It departs from valve body；The vent valve further includes dust cover 7, and top edge is connected on the push rod 4, and lower edge is connected to institute It states on valve body 1, for anti-throw-out lever 4 into valve body when brings foreign matter into, and influences the movement of push rod 4, and the dust cover 7 is with pushing away The movement of bar 4 and deform, but its lower edges will not depart from from push rod 4 and valve body 1；4 top of push rod is additionally provided with and it By an elastic cylinder pin connection between the button 8 being detachably connected, with the push rod 4, the button 8 is mushroom shaped, Contribute to the forced area of increase push rod 4.

Emergency braking vent valve in the utility model, it is simple in structure, and can realize and quickly and effectively leak informaton, the spool 3 one end is withstood by thrust spring 21, and the other end is withstood by push rod 4, and the thrust spring 21 and push rod 4 promote spool 3 jointly, The function that vent valve is turned on and off is played, and the push rod 4 with locking function and retaining mechanism can lock the position of push rod 4 It puts, so as to play the role of locking spool.

Embodiment two

A kind of emergency braking vent valve as described above, the present embodiment is different from part and is, as shown in Figure 1, described Retaining mechanism includes steel ball A 51, elastic element and the adjustment part for adjusting the elastic element stroke, the steel ball A 51 are withstood by elastic element and fall into one of limiting slot, are used to fix the position of the push rod 4, and then locking spool.

Wherein, in the present embodiment, as shown in Figure 1, the elastic element is preferably retaining spring 52, the adjustment part is preferred For adjusting bolt 53；The tensile force of retaining spring 52 can be adjusted by adjusting the adjusting bolt 53, so as to adjust 51 Hes of steel ball A The coupling mechanism force of limiting slot.When the vent valve is in off state, the steel ball A 51 is fallen into lower locking slot 42, the push rod 4 stress point is the upper trapezoid side of lower locking slot 42 and the contact point of steel ball A 51, and the power of generation is F₁；When the vent valve is During opening state, realization promptly puts wind action, and the steel ball A 51 is skidded off from lower locking slot 42 and fallen into upper locking slot 41, The stress point of the push rod 4 is the lower trapezoid side of upper locking slot 41 and the contact point of steel ball A 51, and the power of generation is F₂。

Embodiment three

A kind of emergency braking vent valve as described above, the present embodiment is different from part and is, such as Figure 11 and Figure 12 institutes Show, the limiting slot is dovetail groove, i.e., upper locking slot 41 and lower locking slot 42 are dovetail groove, and trapezoidal side and lower trapezoid thereon The angle on side and base is obtuse angle, and the angle on the upper trapezoid side and base is 90 ° of+α₁, the lower trapezoid side and base Angle is 90 ° of+α₂.The α₁Scope for 20 °~60 °, in order to reduce the strength for promoting the push rod 4, prevent the spool 3 are locked, and the vent valve is caused to can not achieve the function of promptly leaking informaton；The α₂Scope for 0 °~45 °, be conducive to institute State vent valve prevents the spool 3 from springing back in the case of emergency braking.

By the power F₁It is decomposed into the power F of vertical direction_BarWith the power F of horizontal direction_{1 lock}, the power F₂It is decomposed into vertical direction Power F_CoreWith the power F of horizontal direction_{2 locks}, then

F_Bar=F_{1 lock}×cotα₁,

F_Core=F_{2 locks}×cotα₂,

Wherein, F_BarSteel ball A 51 limits the resistance that push rod 4 declines, F during for the vent valve in off position_{1 lock}To be described Vent valve in off position when steel ball A 51 be subject to the elastic force of retaining spring 52, F_CoreFor the vent valve in opening state steel ball A 51 limits the resistance that push rod 4 rises, that is, locks the power of spool 3, F_{2 locks}For the vent valve in opening state steel ball A 51 by To the elastic force of retaining spring 52.

It understands, the F_{1 lock}And F_{2 locks}Size the tensile force of retaining spring 52 adjusted by adjusting adjusting bolt 53 change Become, the α₁And α₂Change by adjusting the angle of dovetail groove.When the tensile force of the retaining spring 52 is constant, the α₁ And α₂Value it is smaller, corresponding F_BarAnd F_CoreValue it is bigger；As the α₁And α₂Value when immobilizing, the F_{1 lock}And F_{2 locks}Value It is bigger, corresponding F_BarAnd F_CoreValue it is bigger.

To sum up, the adjusting bolt 53 of the retaining mechanism or the lower trapezoid side and base of the adjustment dovetail groove are individually adjusted Angle, can realize the function of locking the spool 3, and the two is applied in combination, it is better.

Example IV

A kind of emergency braking vent valve as described above, the present embodiment with embodiment one the difference is that, such as Fig. 1 institutes Show, further include state communication means, including steel ball B 91, switch module and switch, switch is preferably described in the present embodiment Quick-action switch 92, the steel ball B 91 are arranged between push rod 4 and switch module, and the switch module is contradicted with quick-action switch 92 to be connected It connects, when the push rod 4 moves up and down, the steel ball B 91 is moved left and right with falling into or eject limiting slot realization, so as to band Move the switch module to move left and right, complete the energization switching of the quick-action switch 92, the quick-action switch 92 and indicator light or Display connects, and the "on" position of the quick-action switch 92 is corresponding with the open and-shut mode of vent valve.

With reference to shown in Fig. 1 and Fig. 4, the switch module includes switch spring 93, switch spring seat 94,95 and of adjusting screw rod Displaced block 96 is switched, the switch spring 93 is arranged in switch spring seat 94, and is socketed on the adjusting screw rod 95, the tune It saves 95 one end of screw rod and is equipped with external screw thread 951, be connected with the switch displaced block 96, the other end is conformed with 952 and cone tank 953, the protrusion 952 is used for 93 /V of switch spring, and the cone tank 953 is contradicted with steel ball B 91 and connected.

Wherein, as shown in Fig. 2, when the push rod 4 is pushed downward mobile, the push rod 4 also promotes spool 3 to moving down Dynamic, the spool 3 departs from valve port 6 so that the inlet air plenum 11 is communicated with room 12 of leaking informaton, and realizes effect of promptly leaking informaton, at this time The steel ball B 91 is fallen into the lower trapezoid slot 42 of push rod 4, and the adjusting screw rod 95 is driven to move right, and realizes that the quick-action is opened Close the switching of "on" position.

The quick-action switch 92 is connected by an installing plate with valve body 1, in the present embodiment, the quantity of the quick-action switch 92 For two, i.e. quick-action switch one and quick-action switch two, to ensure that state communication information is reliable, the quick-action switch 92 is equipped with four A contact and quick-action switch button, the quick-action switch button is contradicted with adjusting screw rod 95 and connected, as shown in Figure 5 and Figure 6, described There are contact 1,2,3,4 and quick-action switch button 921 on quick-action switch one, there is contact 5,6,7,8 and speed on the quick-action switch two Dynamic switch button 922.When the vent valve is in off state, as shown in Figures 5 to 7, the quick-action switch button 921 and speed Dynamic switch button 922 is in pressed status, and the contact 1,4,5,8 is powered at this time, and the contact 2,3,6,7 powers off；When described When vent valve is in an open state, as shown in Fig. 8 to Figure 10, the quick-action switch button 921 and quick-action switch button 922 are in bullet The state of rising, the energization of contact 2,3,6,7 at this time, the contact 1,4,5,8 powers off.The break-make of the contact of the quick-action switch 92 Indicator light, computer or display screen are connected, the signal of the emergency braking vent valve opening and closing can be provided in time, be conducive to locomotive Automation remote controls.

Embodiment five

A kind of emergency braking vent valve as described above, the present embodiment with embodiment one the difference is that, be additionally provided with close Seal apparatus is used to ensure the air-tightness of the vent valve so that the work of the vent valve is more stablized.

As shown in Figure 1, being equipped with O-ring seal 22 on the valve deck 2, it is arranged between the valve deck 2 and valve body 1, makes It obtains air tight during the two rotatable engagement；The spool 3 is equipped with valve pad 31 and K-type sealing ring 32, and the valve pad 31 is embedded in spool 3 Upper surface, preferred cross sectional shape be trapezoidal shape, to prevent it from coming off easily from the spool 3, and be conducive to the valve Sealing between core 3 and valve port 6, the K-type sealing ring 32 are arranged on the valve deck 2 on the side contact surface of spool 3, having Closed type is reliable, frictional resistance is small so that the spool 3 stable movement on valve deck 2；The push rod 4 is equipped with O-ring seal 44, it is arranged on the side contact surface of the push rod 4 and spool 3, to prevent outside air and inlet air plenum 11 or room 12 of leaking informaton Air communicate；As shown in Fig. 2, the valve port 6 is equipped with boss 61 and O-ring seal 62, the boss 61 is used for and spool 3 On valve pad 31 contradict connection, promote the air-tightness between the spool 3 and valve port 6, the O-ring seal 62 is arranged on valve port 6, on the side contact surface of valve body 1, ensureing when the spool 3 seals valve port 6, prevent the inlet air plenum 11 and room 12 of leaking informaton Air communicate.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art Art personnel on the premise of the utility model method is not departed from, can also make several improvement and supplement, these are improved and supplement Also it should be regarded as the scope of protection of the utility model.

Claims

1. a kind of emergency braking vent valve, which is characterized in that including valve body, valve deck, spool, push rod and retaining mechanism, the valve Inlet air plenum and room of leaking informaton are equipped in vivo, valve port is equipped between the inlet air plenum and room of leaking informaton, and being between the valve deck and valve body can Dismantling connection is equipped with thrust spring, valve port is withstood at the top of the spool between the valve deck and the bottom of spool, make described put Air-valve is in normally off, and one end of the push rod penetrates to contradict with the top of spool in valve body and connect, and the push rod is equipped with Two limiting slots, respectively upper locking slot and lower locking slot corresponding with the position of the spool, the retaining mechanism and limit Position slot connection.

2. emergency braking vent valve according to claim 1, which is characterized in that the retaining mechanism includes steel ball A, positioning Spring and the adjusting bolt for adjusting the retaining spring stroke, the steel ball A is withstood by retaining spring falls into wherein one In a limiting slot.

3. emergency braking vent valve according to claim 1, which is characterized in that state communication means are further included, including Steel ball B, switch module and quick-action switch, the steel ball B are arranged between push rod and switch module, and the switch module is opened with quick-action It closes and contradicts connection, the steel ball B is moved up and down with push rod realizes that it is moved left and right, so as to drive the switch module or so shifting It is dynamic, the energization switching of the quick-action switch is completed, the quick-action switch is connected with indicator light or display, the quick-action switch "on" position is corresponding with the open and-shut mode of vent valve.

4. emergency braking vent valve according to claim 3, which is characterized in that the switch module include switch spring, Switch spring seat, adjusting screw rod and switch displaced block, the switch spring is arranged in switch spring seat, and is socketed in the adjusting On screw rod, described adjusting screw rod one end is equipped with external screw thread, is connected with the switch displaced block, the other end is conformed with and taper Slot, the protrusion are used for switching spring retainer, and the cone tank is contradicted with steel ball B and connected.

5. emergency braking vent valve according to claim 1, which is characterized in that the limiting slot is dovetail groove, and thereon Trapezoidal side and the angle on lower trapezoid side and base are obtuse angle, and the angle on the upper trapezoid side and base is 90 ° of+α₁, under described Trapezoidal side and the angle on base are 90 ° of+α₂。

6. emergency braking vent valve according to claim 5, which is characterized in that the α₁Scope for 20 °~60 °, it is described α₂Scope be 0 °~45 °.

7. according to any emergency braking vent valves of claim 1-6, which is characterized in that be additionally provided with sealing device.

8. according to any emergency braking vent valves of claim 1-6, which is characterized in that further include dust cover, top Edge is connected on the push rod, and lower edge is connected on the valve body, and foreign matter is brought into when entering valve body for anti-throw-out lever.

9. according to any emergency braking vent valves of claim 1-6, which is characterized in that be additionally provided at the top of the push rod with Its button being detachably connected.