CN2288891Y - Aerodynamic brake with control flap for rail vehicle - Google Patents
Aerodynamic brake with control flap for rail vehicle Download PDFInfo
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- CN2288891Y CN2288891Y CN 96244742 CN96244742U CN2288891Y CN 2288891 Y CN2288891 Y CN 2288891Y CN 96244742 CN96244742 CN 96244742 CN 96244742 U CN96244742 U CN 96244742U CN 2288891 Y CN2288891 Y CN 2288891Y
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Abstract
The utility model relates to an aerodynamic brake with control flaps for railway vehicles, which belongs to a component part of a vehicle brake system. The utility model is mainly composed of a casing, a weight sensing valve and a pressure limiting valve, wherein a weight sensing valve cavity and a pressure limiting valve cavity are separately arranged in the casing, the weight sensing valve and the pressure limiting valve are respectively arranged in the weight sensing valve cavity and the pressure limiting valve cavity, and the other braking devices of a brake system are connected with the utility model through metallic connection pipes. The utility model has the advantages of compact structure, small size, reasonable layout, flexible application and high safety, and the utility model is suitable for railway vehicles, especially freight trains.
Description
The utility model is the device of automatic compensation braking force under the different situations of empty wagons, loaded vehicle that a kind of brake system of rail vehicle is used, and belongs to the constituent elements of motor vehicle braking system.
At present; in the rolling stock of China; especially lorry; be generally mixed unit train; be that load carrying ability on every joint train is inequality, sometimes even differ far away, when stopping because the different desired braking forces of the load carrying ability of every joint train are also different; therefore in order to protect wheel when braking, not to be worn, need in the brake system of every joint train, to install the device of automatic compensation braking force.The device of the automatic compensation braking force of using always on the train as shown in Figure 1 now, mainly comprise check weighing valve 1 and limiting valve 2, check weighing valve 1 is installed on the bolster bogie side frame lateral surface, limiting valve 2 is installed on the car body, owing in the vehicle traveling process, relatively rotate sometimes between bolster bogie side frame and the car body, therefore be connected with flexible rubber hose 4 between check weighing valve 1 and the limiting valve 2, its position concerns as shown in Figure 2.The principle of work of the device of this automatic compensation braking force is: check weighing valve 1 is by the position of arm of action 19 induction bolster 15; bolster 15 apart from check weighing valve 1 farthest; arm of action 19 stretches out long more; the load carrying ability that train is described is big more; the load carrying ability that check weighing valve 1 is responded to changes pressure information into and passes to limiting valve 2 by flexible pipe, gives the brake-pressure of brake cylinder 3 by limiting valve 2 Control Allocation, thereby reaches under the situation of the different load carrying abilities of train; its braking force difference is with the purpose of protection wheel.But there is following shortcoming in the device of this automatic compensation braking force: 1) distance is far away between check weighing valve 1 and the limiting valve 2, middle connects with flexible rubber hose, is unfavorable for antitheft, maintenance, and arrange loose, the easy ageing failure of flexible rubber hose; 2) because check weighing valve 1 is the split arrangement with limiting valve 2, when being connected with other control mechanism of brake system, pipeline connects as shown in Figure 2 loaded down with trivial details, wherein limiting valve 2 will be connected with distributing valve 5, brake cylinder 3 respectively, and connect loosening or loss of parts because vibrations may cause in the vehicle operating, influence traveling security; Vibrations during 3) owing to driving may cause the erroneous judgement of check weighing valve 1, thereby influence the accuracy of glancing impact, cause the wearing and tearing of wheel.
The purpose of this utility model is the bare weight valve of a kind of rolling stock of design, and its volume is little, and compact conformation is used with the brake system of train, can simplify the device of existing automatic compensation braking force according to the big or small automatic compensation braking force of the load carrying ability of train.
The bare weight valve of the rolling stock that the utility model is designed mainly is made of housing, check weighing valve and limiting valve, has separated check weighing valve pocket and pressure limiting valve pocket in the housing, and check weighing valve and limiting valve lay respectively in check weighing valve pocket and the pressure limiting valve pocket; The check weighing valve is mainly by loam cake, valve rod, spool, valve, bottom, spring and seal ring constitute, loam cake covers the upper port of check weighing valve pocket, have through hole in the middle of the loam cake, spool is separated into the check weighing valve pocket, following two chambeies, spool has the up-small and down-big step-like cavity of hollow, the bottom is sealed by bottom, the spool upper end has upper port, link up with the epicoele of check weighing valve pocket, the lower end of spool has lower port, link up with the cavity of resorption of check weighing valve pocket, the centre of spool is equipped with valve rod, the upper end of valve rod is positioned at the through hole in the middle of the loam cake, and by the seal ring sealing, the valve rod upper end has can be with the deflation hole of check weighing valve epicoele and atmosphere communication between valve rod and the loam cake, the lower end of valve rod is equipped with valve, can be with on the check weighing valve pocket, cavity of resorption is linked up or is disconnected, and is supported with spring between the valve of valve core cavity and bottom, and valve rod can be with on the spool, move down; Limiting valve is mainly by loam cake, spring, spool, valve, bottom, spring and seal ring constitute, the loam cake of limiting valve covers the upper port of pressure limiting valve pocket, spool is up big and down small stairstepping, the centre has cavity, spool is separated into limiting valve, in, following three chambeies, spool with cavity link up by the through hole on the sidewall and epicoele, between each chamber in the spool outside by the seal ring seal isolation, between spool upper end and the loam cake spring is installed, the spool lower end is installed with valve, bottom covers pressure limiting valve pocket lower port, between valve and bottom spring is installed; The epicoele of check weighing valve and the epicoele of limiting valve are linked up by the passage between the next door, two chambeies, the cavity of resorption of check weighing valve and the lumen of limiting valve are linked up by the passage between the next door, two chambeies, and the sidewall in three chambeies, upper, middle and lower of limiting valve all has the port that is communicated with outside other brake equipment.
The bare weight valve of the another kind of rolling stock that the utility model is designed, mainly constitute by housing, check weighing valve, detection valve and limiting valve, have separated check weighing valve pocket in the housing, detect valve pocket and pressure limiting valve pocket, check weighing valve, detection valve and limiting valve lay respectively at the check weighing valve pocket, detect in valve pocket and the pressure limiting valve pocket; The check weighing valve is mainly by loam cake, valve rod, spool, valve, bottom, spring and seal ring constitute, loam cake covers the upper port of check weighing valve pocket, have through hole in the middle of the loam cake, spool is separated into the check weighing valve pocket, following two chambeies, spool has the up-small and down-big step-like cavity of hollow, the bottom is sealed by bottom, the spool upper end has upper port, link up with the epicoele of check weighing valve pocket, the lower end of spool has lower port, link up with the cavity of resorption of check weighing valve pocket, the centre of spool is equipped with valve rod, the upper end of valve rod is positioned at the through hole in the middle of the loam cake, and by the seal ring sealing, the valve rod upper end has can be with the deflation hole of check weighing valve epicoele and atmosphere communication between valve rod and the loam cake, the lower end of valve rod is equipped with valve, can be with on the check weighing valve pocket, cavity of resorption is linked up or is disconnected, and is supported with spring between the valve of valve core cavity and bottom, and valve rod can be with on the spool, move down; Detect valve mainly by loam cake, valve rod, spool, back-up ring, bottom and spring constitute, loam cake will detect valve pocket and cover, have through hole in the loam cake, spool is positioned at and detects valve pocket, the lateral wall of spool forms with detection valve pocket inwall, following two chambeies, have up-small and down-big stepped hole in the spool, the stepped hole on the top of spool and epicoele are linked up, and the stepped hole of spool bottom and cavity of resorption are linked up, and valve rod is installed in the spool, stretch out outside the valve body by the through hole of loam cake the valve rod upper end, the stem lower portion lateral wall has groove, and the valve rod lower end is equipped with back-up ring, below loam cake, the valve rod upper outside is equipped with spring, detects the valve lower port and seals by bottom; Limiting valve is mainly by loam cake, spring, spool, valve, bottom, spring and seal ring constitute, the loam cake of limiting valve covers the upper port of pressure limiting valve pocket, spool is up big and down small stairstepping, the centre has cavity, spool is separated into limiting valve, in, following three chambeies, spool with cavity link up by the through hole on the sidewall and epicoele, between each chamber in the spool outside by the seal ring seal isolation, between spool upper end and the loam cake spring is installed, the spool lower end is installed with valve, bottom covers pressure limiting valve pocket lower port, between valve and bottom spring is installed; The epicoele of the epicoele of check weighing valve and detection valve is linked up by the passage between the next door, two chambeies, the cavity of resorption of the cavity of resorption of check weighing valve and detection valve is linked up by the passage between the next door, detect the epicoele of valve and the epicoele of limiting valve and link up by the passage between the next door, two chambeies again, detect the cavity of resorption of valve and the lumen of limiting valve and link up by the passage between the next door, two chambeies; The sidewall in three chambeies, upper, middle and lower of limiting valve all has the port that is communicated with other brake equipment.
Be to realize stepless brake control, in the valve pocket of the check weighing valve in the bare weight valve of the rolling stock that the utility model is designed, the outside at the valve rod of check weighing valve is equipped with spring between loam cake and the spool.
Be energy direct viewing vehicle load situation and braking situation, in the bare weight valve of the rolling stock that the utility model is designed, in the cavity of the spool of limiting valve the indication valve rod can also be installed, the upper end of spool is fixed with the indicator valve catch, the loam cake of limiting valve has and the cooresponding through hole of valve rod, indication valve rod upper end by loam cake with through hole stretch out loam cake and expose outside the valve body.
The bare weight valve of the rolling stock that the utility model is designed is in application process, by metal tube the epicoele of limiting valve is communicated with step-down reservoir in the brake system, the lumen of limiting valve is communicated with braking reservoir in the brake system, the cavity of resorption of limiting valve is communicated with triple valve in the brake system, the valve rod in the check weighing valve is matched with weight measurement mechanism.When the beginning glancing impact, pressure air in the brake system in the auxiliary reservoir enters in the cavity of resorption of limiting valve from triple valve, and enter in the lumen from the cavity of resorption of limiting valve, because the lumen of limiting valve and the cavity of resorption of check weighing valve are linked up, and be communicated with the braking reservoir, therefore pressure air is divided into two-way after entering the lumen of limiting valve, one the tunnel enters the braking reservoir, another road enters the cavity of resorption of check weighing valve, spool jack-up with the check weighing valve of check weighing valve bottom, the valve rod of check weighing valve moves up with spool, after the obstruction of the weight measurement mechanism that valve rod is mated, valve rod stops to rise, and the be under pressure effect of air of spool continues to rise, and makes valve rod back down the valve of bottom, pressure air enters into epicoele from the cavity of resorption of check weighing valve, because the epicoele of check weighing valve is connected with the epicoele of limiting valve, so pressure air enters the epicoele of limiting valve, and by entering in the step-down reservoir with limiting valve bonded assembly metal tube.A pressure air part that enters the bare weight valve of rolling stock from auxiliary reservoir enters the braking reservoir thus, and another part enters the step-down reservoir.When the car body load carrying ability was big more, away from the valve rod of check weighing valve, the valve rod amount of moving up of check weighing valve was big more more for weight measurement mechanism, the pressure air that enters the step-down reservoir is few more, and the pressure air that enters the braking reservoir is many more, and promptly brake-pressure is big more, thereby it is big more to form the car body load carrying ability, and braking force is big more.In the braking later stage, the pressure air of the lumen of limiting valve acts on the spool of limiting valve, the pressure air of the epicoele of limiting valve also acts on the spool of limiting valve, when the summation of two cavity pressures during greater than the spring pressure on spool top, spool rises, and the valve of spool bottom is by jack-up, valve is with the cavity of resorption and the lumen blocking-up of limiting valve, the pressure air of coming in from triple valve can not enter the lumen of limiting valve again, and the pressure air in the braking reservoir no longer increases, and restricted power no longer increases.If fully loaded vehicle, be the loaded vehicle situation, at glancing impact because the spacing valve rod of weight measurement mechanism away from the check weighing valve, therefore the valve rod of check weighing valve does not stop during the rising displacement under the effect of pressure air, the valve of valve rod lower end is not backed down, the pressure air that enters the bare weight valve from auxiliary reservoir can only enter the braking reservoir and be used for braking, braking force maximum.
When braking finishes the brake system alleviation, the very fast pressure air with the limiting valve cavity of resorption of the triple valve that is communicated with the limiting valve cavity of resorption is discharged, the spool of limiting valve backs down the valve of lower end under the effect of upper end spring, the lumen and the cavity of resorption of limiting valve are linked up, the lumen of limiting valve and the cavity of resorption of check weighing valve and the pressure air back track in the brake cylinder are discharged through triple valve; Because the cavity of resorption of check weighing valve and the lumen pressure decay of limiting valve, then the spool in the check weighing valve descends, the valve of push rod lower end backs down simultaneously, the upper and lower chamber of check weighing valve is linked up, the former road of pressurized air in the epicoele of check weighing valve, the epicoele of limiting valve and the step-down cylinder is back to the cavity of resorption of limiting valve, discharges through triple valve, after the spool of check weighing valve and valve rod reset, the remaining residual gas of check weighing valve epicoele is discharged by the deflation hole of valve rod upper end, makes the spool in the limiting valve also return to the preceding original position of braking.
If have the indication valve rod in the bare weight valve of the rolling stock that the utility model is designed, then at glancing impact when in the epicoele of limiting valve and the step-down cylinder pressure air being arranged, the through hole of pressure air on the limiting valve sidewall enter the indication valve rod below promotion indication valve rod rise, the indication valve rod stretches out outside the valve body, be indicated as empty wagons or light car situation,, then be illustrated as the loaded vehicle situation if the indication valve rod does not stretch out outside the valve body, pressure air all enters brake cylinder, and does not have the pressure air of shunting in the step-down reservoir.
If have the detection valve in the bare weight valve of the rolling stock that the utility model is designed, then the valve rod in glancing impact detects valve and the valve rod of check weighing valve rise synchronously, if in uphill process, do not run into the obstruction of weight measurement mechanism always, illustrate that then weight measurement mechanism loses, automatically change brake system over to the empty wagons position, not frayed with the protection wheel; If the valve rod that detects valve has been subjected to the obstruction of weight measurement mechanism, then brake system is by check weighing valve in the bare weight valve of rolling stock and limiting valve control normal operation.The purpose that detects valve is to protect under the weight measurement mechanism something unexpected happened, and vehicle is not damaged, so as to avoid an accident accident.
The advantage of the bare weight valve of the rolling stock that the utility model is designed is:
1. compact conformation, volume is little, and is rationally distributed, is convenient to maintenance.The designed bare weight valve of the utility model is integrated check weighing valve and limiting valve, be installed on the central sill of car body, be connected with other device in the brake system by the metal hard tube, easy access, avoided check weighing valve in the past to be installed on the bolster bogie side frame lateral surface, and limiting valve is installed in the loose layout on the car body and the connection sebific duct that causes is easy to wear out, and is unfavorable for defectives such as antitheft, maintenance.
2. connect simply, intensity height, parts are difficult for losing, and having exempted the harm that the driving vibrations may cause.
3. applying flexible both can be the bare weight valve that two-stage is regulated, and also can be the bare weight valve of step-less adjustment, was Campatible, only when assembling or maintenance, deducted or the spring that increases upper end in the check weighing valve pocket just can change its version.
4. can observe the residing state of car brakeing from the outside, be easy to understand grasp brake system service condition.Owing to increased the indication valve rod in the bare weight valve of rolling stock, therefore the length of stretching out according to the indication valve rod is judged car weight or the residing sky of motor vehicle braking system, is weighed state.
5. have automatic protection functions, avoid damage vehicle under the unforeseen circumstances.In the bare weight valve of rolling stock, increased the detection valve, in case occur to damage, lose or unforeseen circumstances such as stolen, detected valve can make brake system change the empty wagons position over to automatically, do not worn and torn because of braking force is excessive with the wheel of protection vehicle at weight measurement mechanism.Recover normal as unexpected situation disappearance post-braking system.
The bare weight valve of the rolling stock that the utility model is designed mainly is applicable on the rolling stock, is particularly useful for the shuffling lorry, cooperates other parts of brake system to finish automatic, safe and reliable braking procedure.
Fig. 1 is the structural representation of the device of existing automatic compensation braking force.
Fig. 2 is the distribution schematic diagram of device in brake system of existing automatic compensation braking force.
Fig. 3 is the constructional drawing of the bare weight valve of the designed a kind of rolling stock of the utility model.
Fig. 4 is the constructional drawing of the bare weight valve of the designed another kind of rolling stock of the utility model.
Fig. 5 is the constructional drawing of the bare weight valve of another designed rolling stock of the utility model.
Fig. 6 is the constructional drawing of the bare weight valve of another designed rolling stock of the utility model.
Fig. 7 is the distribution schematic diagram of bare weight valve in brake system of the designed rolling stock of the utility model.
In conjunction with specific embodiments the embodiment and the effect of the bare weight valve of the designed rolling stock of the utility model is described further with reference to the accompanying drawings below.
The bare weight valve of a kind of rolling stock as shown in Figure 3 mainly is made of housing 16, check weighing valve and limiting valve, and housing 16 has separated check weighing valve pocket and pressure limiting valve pocket, and check weighing valve and limiting valve lay respectively in check weighing valve pocket and the pressure limiting valve pocket.The check weighing valve mainly is made of loam cake 18, valve rod 15, spring 14, spool 13, valve 11, spring 10 and bottom 8, spool 13 is positioned at the check weighing valve pocket, the check weighing valve pocket is separated into upper and lower two chambeies, epicoele is the G chamber, cavity of resorption is the E chamber, spool 13 has the cavity of up-small and down-big step-like hollow, the upper cavity of spool 13 is the I chamber, lower chamber is the F chamber, through hole epicoele and G chamber by sidewall are linked up, and cavity of resorption and E chamber are linked up, and valve rod 15 is installed in the cavity of spool 13, the lower end of valve rod 15 is installed with valve 11, I chamber and F chamber can be linked up or is blocked.The lower end of spool 13 is cooperated with the back-up ring 9 that is fixed on spool 13 lower ends by bottom 8 and is sealed, and side valve bar direction is equipped with spring 10 between valve 11 and bottom 8, is used for supporting and resetting.Spool 13 is stretched out on valve rod 15 tops.Loam cake 18 covers the upper port of check weighing valve pocket, has through hole in the middle of the loam cake 18, and stretch out outside the housing 16 by the interstitial hole of loam cake 18 valve rod 15 upper ends.Have deflation hole 24 in the middle of the upper end of valve rod 15, G chamber and ambient atmosphere can be linked up.In the check weighing valve pocket between loam cake 18 and the spool 13, the outside of valve rod 15 is installed in spring 14.Between loam cake 18 and the housing 16, sealed by seal ring 17 and 12 respectively between spool 13 and the check weighing valve pocket inboard.Limiting valve mainly is made of loam cake 21, spring 22, spool 6, valve 3, spring 2 and bottom 1, spool 6 is installed in the pressure limiting valve pocket, its outside is stepped, form three chambeies, upper, middle and lower with the inwall of pressure limiting valve pocket, epicoele is the H chamber, lumen is the C chamber, cavity of resorption B chamber, and having cavity in the middle of the spool 6 is the K chamber.The lower end of spool 6 is installed with valve 3, and bottom 1 covers pressure limiting valve pocket lower port.Between bottom 1 and valve 3, spring 2 is installed.Loam cake 21 covers pressure limiting valve pocket upper port, and the outside of loam cake 21 is locked by locknut 20.Between the upper surface of loam cake 21 and spool 6, spring 22 is installed.The intersection in K, C, B chamber is sealed by seal ring 23,7 between spool 6 and the limiting valve cavity wall, is sealed by seal ring 4 with housing 16 fitted seal places at bottom 1.Have passage L, M on the wall that check weighing valve pocket and pressure limiting valve pocket are separated by, passage L links up G chamber and H chamber, and passage M is with E chamber and the communication of C chamber.On the sidewall in H, the C of pressure limiting valve pocket, B chamber, have passage J, D, A respectively, be used to install other device that metal connecting tube connects brake system, as shown in Figure 7, by metal connecting tube the H chamber is communicated with step-down reservoir 71, the C chamber is communicated with braking reservoir 72, the B chamber is communicated with triple valve 73, and triple valve is connected with auxiliary reservoir 74 and train brake pipe 75 again.
The bare weight valve of the rolling stock that present embodiment is designed is in application process, when carrying out glancing impact, pressure air in the brake system in the auxiliary reservoir 74 enters in the B chamber of limiting valve in the bare weight valve through connecting line and passage A by triple valve 73 controls, this moment, B chamber and C chamber were in the communication state, pressure air enters the C chamber from the B chamber, enter the E chamber of check weighing valve and the F chamber of spool 13 by passage M again, enter braking reservoir 72 by passage D, brake reservoir 72 and brake this moment, meanwhile the spool 13 in the check weighing valve is by pressure air jack-up, valve rod 15 moves up with spool 13, stretch out outside the housing 16 valve rod 15 upper ends, this moment valve rod 15 upper ends deflation hole 24 or by loam cake 18 sidewalls and seal ring blocks and stretch out outside the housing with valve rod 15, G chamber and ambient atmosphere are kept apart.After the obstruction of the weight measurement mechanism 76 above valve rod 15 is subjected to it, valve rod 15 stops to rise, the effect of air still moves up and spool 13 is under pressure, valve rod 15 backs down valve 11, pressure air enters I, G chamber from E, F chamber, enter the H chamber of limiting valve again by the L passage, enter in the step-down reservoir 71 by passage J again.Behind the pressure air process bare weight valve of rolling stock of auxiliary reservoir 74 conveyings, a part enters braking reservoir 72 and is used for braking thus, and another part enters in the step-down reservoir 71 and is used for dividing potential drop.The car body load carrying ability is big more, weight measurement mechanism 76 is more away from valve rod 15, the distance that valve rod 15 rises is big more, the moment that valve 11 is backed down is got over backward delay, therefore the pressure air of shunting is few more in the step-down reservoir 71, and the pressure air that enters braking reservoir 72 is many more, and promptly brake-pressure is big more, makes braking force be directly proportional with car body weight.The braking later stage, pressure air in the H chamber of limiting valve acts on spool 6, the pressure air in C chamber also acts on spool 6, during when the application force in two chambeies with greater than the pressure of the spring 22 on spool top, spool 6 rises, drive the path that the valve 3 of spool bottom rises C chamber and B chamber and cut off, can not enter in the bare weight valve of rolling stock from the pressure air of triple valve 73 again, promptly braking force no longer increases.If vehicle is in fully loaded loaded position situation, weight measurement mechanism 76 is away from valve rod 15, therefore valve rod 15 bumps less than weight measurement mechanism 76 in the braking procedure, valve 11 can not be opened, the pressure air that enters the bare weight valve of rolling stock from triple valve 73 can only directly enter in the braking reservoir 72 from process C chamber, B chamber and be used for braking, this moment the braking force maximum, limiting valve and check weighing valve are all inoperative, do not have the pressure airs of shunting in the step-down reservoir 71.
When braking finishes system's alleviation, triple valve 73 discharges pressure air, the very fast discharge of the pressure air in the B chamber of limiting valve, spool 6 backs down the valve 3 of lower end under the effect of spring 22, C chamber and B chamber are linked up, the pressure air in C chamber enters the B chamber and is discharged from, and the pressure air in the F chamber of the pressure air in the braking reservoir 72 of linking up with the C chamber and the E chamber of check weighing valve, spool 13 is return through triple valve 73 by C chamber Yuan Lu and discharged; E in the check weighing valve, the F cavity pressure descends, spool 13 descends simultaneously under differential pressure action, valve 11 is pushed open downwards, I, the F chamber is linked up, I, the pressure air in G chamber advances E, the F chamber, with E, the pressure air in F chamber is together discharged, and the pressure air in the H chamber of pressure air in the step-down reservoir 71 and limiting valve is retracted into the G chamber by passage L, discharge with the pressure air in the G chamber, the spool 13 of check weighing valve, after valve rod 15 resets, the deflation hole 24 of valve rod 15 upper ends is linked up G chamber and ambient atmosphere, and the residual gas in the G chamber is discharged by deflation hole 24, and the bare weight valve of rolling stock returns to the situation before the not braking.The alleviation of loaded position is very simple, during the outside exhaust of triple valve 73, pressure air in the braking reservoir 72 directly is back to the C chamber of limiting valve, because the bare weight valve of rolling stock does not move in the braking procedure, therefore C chamber and B chamber are linked up all the time, pressure air in the C chamber directly enters the B chamber, is discharged gas pressure balancing in each cylinder and triple valve 73 in triple valve 73 by the B chamber.
Can be found out by said structure and working process the bare weight valve arrangement compactness, rationally distributed of the rolling stock in the present embodiment check weighing valve and limiting valve to be integrated, volume reduces, and part is difficult for losing, and is connected simply with other brake equipment, helps maintenance.If the spring in the check weighing valve 14 is removed the bare weight valve that promptly forms secondary adjusting braking force, can select the bare weight valve of secondary adjusting or step-less adjustment braking force as required, the convenient use enlarged range of use.
The bare weight valve of a kind of rolling stock as shown in Figure 4, its structure is similar substantially to embodiment 1, mainly constitute by housing 16, check weighing valve and limiting valve, the check weighing valve mainly comprises loam cake 18, valve rod 15, spring 14, spool 13, valve 11, spring 10 and bottom 8, and limiting valve mainly is made of loam cake 21, spring 22, spool 6, valve 3, spring 2 and bottom 1.Different is the valve 6 of limiting valve with the K chamber in indication valve rod 41 is installed, the K cavity segment of indication valve rod 41 bottoms and the H chamber of limiting valve are linked up by the passage of spool 6 sidewalls, the outside that indication valve rod 41 is positioned at spool 6 is equipped with spring 42 vertically, the upper end of spool 6 has banking stop 43, and spring 42 is limited in the spool 6.Indication valve rod 41 upper ends by in the middle of the loam cake 21 with through hole stretch out outside the cavity.The working process of present embodiment and embodiment 1 are identical.Indication valve rod 41 is in braking procedure, if in the H chamber pressure air is arranged, the K chamber that then communicates with it also is full of pressure air, and it is protruding that then compression spring 42 makes 41 risings of indication valve rod.Indication valve rod 41 is protruding many more, illustrates that then the pressure in the H chamber is big more, i.e. the pressure air of step-down reservoir shunting is many more, and braking force is more little, and vehicle is light car or complete vehicle curb condition.If no pressure air in the H chamber then indicates valve rod 41 not rise, braking force maximum this moment is described, vehicle is the loaded vehicle state.Present embodiment is compared with embodiment 1, has strengthened deixis, just can observe the braking situation of brake system from the external world, helps judging brake system working condition correctness, is convenient in time pinpoint the problems, and prevents contingency.
The bare weight valve of a kind of rolling stock as shown in Figure 5, its structure is similar substantially to embodiment 2, mainly be made of housing 16, check weighing valve and limiting valve, the upper end of different the is loam cake 18 of check weighing valve has the cavity 51 that matches with weight measurement mechanism, and the pin 52 of weight measurement mechanism is positioned at cavity 51.The working process and the embodiment 2 of the bare weight valve that present embodiment is designed are identical, mainly are convenient to the mechanical control weight measurement mechanism, can keep the cleaning in the check weighing valve pocket in addition, reduce the pollution of ambient atmosphere to the bare weight valve, increase the service life.
The bare weight valve of a kind of rolling stock as shown in Figure 6, its structure and embodiment 2 have similarity, constitute by housing 16, check weighing valve and limiting valve, the structure of check weighing valve and limiting valve and embodiment 2 are identical, have separated check weighing valve pocket and pressure limiting valve pocket in the housing 16, the check weighing valve is positioned at the check weighing valve pocket, and limiting valve is positioned at the pressure limiting valve pocket.With the structure difference of embodiment 2 be also to have in the housing 16 and check weighing valve pocket and the separated detection valve pocket of pressure limiting valve pocket, detect in the valve pocket detection valve be installed.Detecting valve mainly is made of loam cake 64, valve rod 65, spool 61, back-up ring 66, bottom 67 and spring 63, spool 61 is positioned at and detects valve pocket, form upper and lower two chambeies with detection valve pocket inwall, epicoele is that Q chamber, cavity of resorption are the P chamber, have up-small and down-big stepped hole in the spool 61, the stepped hole on the top of spool 61 and Q chamber are linked up, and the stepped hole of bottom and P chamber are linked up, and valve rod 65 is installed in the stepped hole of spool 61.Loam cake 64 will detect the valve pocket upper end and cover, and have through hole in the middle of the loam cake 64, and stretch out outside the detection valve pocket by the through hole of loam cake 64 valve rod 65 upper ends.In detecting valve pocket loam cake 64 below, valve rod 65 upper outside are equipped with spring 63.Valve rod 65 bottom lateral walls have groove 62, and the lower end of valve rod 65 is equipped with back-up ring 66.The lower port that detects valve pocket is by bottom 67 sealings.Detect the Q chamber of valve and link up with the G chamber of check weighing valve and the H chamber of limiting valve respectively, detect the P chamber of valve and link up with the E chamber of check weighing valve and the C chamber of limiting valve respectively by the passage between the next door by the passage between the next door.The connection configuration of bare weight valve in brake system of the rolling stock that present embodiment is designed as shown in Figure 7, its working process is similar to embodiment 2, in braking procedure, work as glancing impact, pressure air in the brake system in the auxiliary reservoir 74 enters the B chamber of limiting valve in the bare weight valve by triple valve 73 through connecting line and passage A, this moment, B chamber and C chamber were in the communication state, pressure air enters the C chamber from the B chamber, passage through the next door enters P chamber and the E chamber of check weighing valve and the F chamber of spool 13 of detecting valve, entering braking reservoir 72 by the passage D that is communicated with the C chamber brakes, meanwhile the spool 13 in the check weighing valve is by jack-up, and valve rod 15 moves up with spool 13; The valve rod 65 that detects in the valve rises.After the obstruction of the weight measurement mechanism 76 above the valve rod 15 of check weighing valve is met it, valve rod 15 stops to rise, the effect of air still moves up and spool is stressed, valve rod 15 backs down valve 11, pressure air enters I, G chamber from E, F chamber, and the passage by the next door enters the Q chamber of detection valve and the H chamber of limiting valve, enters in the step-down reservoir 71 by the passage J that links to each other with the H chamber.The obstruction that the valve rod of detection valve is also run into weight measurement mechanism after 65 rising a period of times, valve rod 16 also no longer rises.Behind the braking later stage equilibrium of pressure, the pressure air in braking reservoir 72 and the step-down reservoir 71 no longer changes.If vehicle is in the loaded position situation, because rising, bumps valve rod 15 less than weight measurement mechanism 76, and valve 11 can not be opened, and this moment, pressure air only can enter braking reservoir 72.And the be under pressure effect of air of the valve rod 65 in the detection valve is risen always, stops up to the obstruction of running into weight measurement mechanism 76 rising.Under normal circumstances, no matter detect valve is that valve rod 65 only rises with the rising of valve pocket internal pressure under empty wagons, light car or the loaded vehicle situation, runs into weight measurement mechanism 76 and stops, and the pressure decay in the valve pocket and descending does not play effect.Have only the something unexpected happened of working as, weight measurement mechanism 76 damages or loses, no matter the vehicle load what state, all can not run into weight measurement mechanism 76 when valve rod 15 rises, this moment is abnormally dangerous, no matter the weight of vehicle, at glancing impact, brake system all is in the loaded vehicle state, the braking force maximum.Detecting valve in this case works; the valve rod 15 of glancing impact check weighing valve rises; the valve rod 65 that detects valve also rises; when bumping less than weight measurement mechanism 76; valve rod 65 rises always; rise to a certain degree; the groove 62 of valve rod 65 bottoms is linked up Q, P two chambeies; pressure air enters the Q chamber from the P chamber; thereby enter the H chamber of I, G chamber and the limiting valve of check weighing valve by the passage in next door, enter again in the step-down reservoir 71, brake system is transformed into empty wagons braking situation automatically; be not damaged with the protection vehicle, avoid the accident of meeting accident.Braking finishes when alleviating, and identical with embodiment 2, the former road of pressure air is returned.Whether the purpose that increases the detection valve in the present embodiment detects weight measurement mechanism 76 exactly and exists, and avoids unforeseen circumstances to take place, and guarantees traffic safety, prolongs the vehicle operation life-span.The structure of the bare weight valve of the rolling stock in the present embodiment is complicated than embodiment 1,2,3, but its protectiveness is stronger, and has plurality of advantages such as compact conformation, volume is little, use is flexible equally, is more suitable in practical application.
Claims (4)
1. the bare weight valve of a rolling stock, it is characterized in that: mainly be made of housing, check weighing valve and limiting valve, have separated check weighing valve pocket and pressure limiting valve pocket in the housing, check weighing valve and limiting valve lay respectively in check weighing valve pocket and the pressure limiting valve pocket; The check weighing valve is mainly by loam cake, valve rod, spool, valve, bottom, spring and seal ring constitute, loam cake covers the upper port of check weighing valve pocket, have through hole in the middle of the loam cake, spool is separated into the check weighing valve pocket, following two chambeies, spool has the up-small and down-big step-like cavity of hollow, the bottom is sealed by bottom, the spool upper end has upper port, link up with the epicoele of check weighing valve pocket, the lower end of spool has lower port, link up with the cavity of resorption of check weighing valve pocket, the centre of spool is equipped with valve rod, the upper end of valve rod is positioned at the through hole in the middle of the loam cake, and by the seal ring sealing, the valve rod upper end has can be with the deflation hole of check weighing valve epicoele and atmosphere communication between valve rod and the loam cake, the lower end of valve rod is equipped with valve, can be with on the check weighing valve pocket, cavity of resorption is linked up or is disconnected, and is supported with spring between the valve of valve core cavity and bottom, and valve rod can be with on the spool, move down; Limiting valve is mainly by loam cake, spring, spool, valve, bottom, spring and seal ring constitute, the loam cake of limiting valve covers the upper port of pressure limiting valve pocket, spool is up big and down small stairstepping, the centre has cavity, spool is separated into limiting valve, in, following three chambeies, spool with cavity link up by the through hole on the sidewall and epicoele, between each chamber in the spool outside by the seal ring seal isolation, between spool upper end and the loam cake spring is installed, the spool lower end is installed with valve, bottom covers pressure limiting valve pocket lower port, between valve and bottom spring is installed; The epicoele of check weighing valve and the epicoele of limiting valve are linked up by the passage between the next door, two chambeies, the cavity of resorption of check weighing valve and the lumen of limiting valve are linked up by the passage between the next door, two chambeies, and the sidewall in three chambeies, upper, middle and lower of limiting valve all has the port that is communicated with outside other brake equipment.
2. the bare weight valve of a rolling stock, it is characterized in that: mainly constitute by housing, check weighing valve, detection valve and limiting valve, have separated check weighing valve pocket in the housing, detect valve pocket and pressure limiting valve pocket, check weighing valve, detection valve and limiting valve lay respectively at the check weighing valve pocket, detect in valve pocket and the pressure limiting valve pocket; The check weighing valve is mainly by loam cake, valve rod, spool, valve, bottom, spring and seal ring constitute, loam cake covers the upper port of check weighing valve pocket, have through hole in the middle of the loam cake, spool is separated into the check weighing valve pocket, following two chambeies, spool has the up-small and down-big step-like cavity of hollow, the bottom is sealed by bottom, the spool upper end has upper port, link up with the epicoele of check weighing valve pocket, the lower end of spool has lower port, link up with the cavity of resorption of check weighing valve pocket, the centre of spool is equipped with valve rod, the upper end of valve rod is positioned at the through hole in the middle of the loam cake, and by the seal ring sealing, the valve rod upper end has can be with the deflation hole of check weighing valve epicoele and atmosphere communication between valve rod and the loam cake, the lower end of valve rod is equipped with valve, can be with on the check weighing valve pocket, cavity of resorption is linked up or is disconnected, and is supported with spring between the valve of valve core cavity and bottom, and valve rod can be with on the spool, move down; Detect valve mainly by loam cake, valve rod, spool, back-up ring, bottom and spring constitute, loam cake will detect valve pocket and cover, have through hole in the loam cake, spool is positioned at and detects valve pocket, the lateral wall of spool forms with detection valve pocket inwall, following two chambeies, have up-small and down-big stepped hole in the spool, the stepped hole on the top of spool and epicoele are linked up, and the stepped hole of spool bottom and cavity of resorption are linked up, and valve rod is installed in the spool, stretch out outside the valve body by the through hole of loam cake the valve rod upper end, the stem lower portion lateral wall has groove, and the valve rod lower end is equipped with back-up ring, below loam cake, the valve rod upper outside is equipped with spring, detects the valve lower port and seals by bottom; Limiting valve is mainly by loam cake, spring, spool, valve, bottom, spring and seal ring constitute, the loam cake of limiting valve covers the upper port of pressure limiting valve pocket, spool is up big and down small stairstepping, the centre has cavity, spool is separated into limiting valve, in, following three chambeies, spool with cavity link up by the through hole on the sidewall and epicoele, between each chamber in the spool outside by the seal ring seal isolation, between spool upper end and the loam cake spring is installed, the spool lower end is installed with valve, bottom covers pressure limiting valve pocket lower port, between valve and bottom spring is installed; The epicoele of the epicoele of check weighing valve and detection valve is linked up by the passage between the next door, two chambeies, the cavity of resorption of the cavity of resorption of check weighing valve and detection valve is linked up by the passage between the next door, detect the epicoele of valve and the epicoele of limiting valve and link up by the passage between the next door, two chambeies again, detect the cavity of resorption of valve and the lumen of limiting valve and link up by the passage between the next door, two chambeies; The sidewall in three chambeies, upper, middle and lower of limiting valve all has the port that is communicated with other brake equipment.
3. the bare weight valve of rolling stock according to claim 1 and 2, its feature also is: in the valve pocket of check weighing valve, the outside of the valve rod of check weighing valve is equipped with spring between loam cake and the spool.
4. the bare weight valve of rolling stock according to claim 1 and 2, its feature also is: in the cavity of the spool of limiting valve the indication valve rod can also be installed, the upper end of spool is fixed with the indicator valve catch, the loam cake of limiting valve has and the cooresponding through hole of valve rod, indication valve rod upper end by loam cake with through hole stretch out loam cake and expose outside the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244742 CN2288891Y (en) | 1996-12-03 | 1996-12-03 | Aerodynamic brake with control flap for rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244742 CN2288891Y (en) | 1996-12-03 | 1996-12-03 | Aerodynamic brake with control flap for rail vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2288891Y true CN2288891Y (en) | 1998-08-26 |
Family
ID=33918035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96244742 Expired - Fee Related CN2288891Y (en) | 1996-12-03 | 1996-12-03 | Aerodynamic brake with control flap for rail vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2288891Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352714C (en) * | 2003-07-03 | 2007-12-05 | 株洲时代新材料科技股份有限公司 | Novel weighing valve for regulating braking force magnitude for railroad rolling stock |
| CN102180160A (en) * | 2011-04-19 | 2011-09-14 | 铁道部运输局 | Pressure-limiting valve for brake system of rapid train |
| CN106585660A (en) * | 2016-12-21 | 2017-04-26 | 中国铁道科学研究院 | Automatic regulating apparatus for empty and heavy vehicle used for air braking system of fast lorry |
| CN109131293A (en) * | 2018-09-14 | 2019-01-04 | 中车眉山车辆有限公司 | A kind of braking system and its braking method of the railway freight-car more vehicle brakings of single control valve |
| KR20220028459A (en) * | 2020-08-28 | 2022-03-08 | 주식회사 고려차량 | Load compensating device and a train with the same |
| CN114802160A (en) * | 2022-05-13 | 2022-07-29 | 中车齐齐哈尔车辆有限公司 | Air control valve with accelerated release function |
| CN115179915A (en) * | 2022-07-15 | 2022-10-14 | 眉山中车制动科技股份有限公司 | Railway vehicle braking empty-load two-stage weight measuring mechanism |
-
1996
- 1996-12-03 CN CN 96244742 patent/CN2288891Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352714C (en) * | 2003-07-03 | 2007-12-05 | 株洲时代新材料科技股份有限公司 | Novel weighing valve for regulating braking force magnitude for railroad rolling stock |
| CN102180160A (en) * | 2011-04-19 | 2011-09-14 | 铁道部运输局 | Pressure-limiting valve for brake system of rapid train |
| CN106585660A (en) * | 2016-12-21 | 2017-04-26 | 中国铁道科学研究院 | Automatic regulating apparatus for empty and heavy vehicle used for air braking system of fast lorry |
| CN109131293A (en) * | 2018-09-14 | 2019-01-04 | 中车眉山车辆有限公司 | A kind of braking system and its braking method of the railway freight-car more vehicle brakings of single control valve |
| KR20220028459A (en) * | 2020-08-28 | 2022-03-08 | 주식회사 고려차량 | Load compensating device and a train with the same |
| KR102419752B1 (en) | 2020-08-28 | 2022-07-12 | 주식회사 고려차량 | Load compensating device and a train with the same |
| CN114802160A (en) * | 2022-05-13 | 2022-07-29 | 中车齐齐哈尔车辆有限公司 | Air control valve with accelerated release function |
| CN115179915A (en) * | 2022-07-15 | 2022-10-14 | 眉山中车制动科技股份有限公司 | Railway vehicle braking empty-load two-stage weight measuring mechanism |
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| 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 |