CN1353061A - Brake cylinder apparatus - Google Patents
Brake cylinder apparatus Download PDFInfo
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- CN1353061A CN1353061A CN01125422A CN01125422A CN1353061A CN 1353061 A CN1353061 A CN 1353061A CN 01125422 A CN01125422 A CN 01125422A CN 01125422 A CN01125422 A CN 01125422A CN 1353061 A CN1353061 A CN 1353061A
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- piston
- spring
- brake
- cylinder apparatus
- brake cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
- B60T13/38—Brakes applied by springs or weights and released by compressed air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/42—Clutches or brakes
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
To provide a brake cylinder device, capable of operating both of an ordinary brake and a spring brake as a parking brake and shortened in the axial length thereof. A brake cylinder device 1 capable of operating both of an ordinary brake means 2 and a spring brake means 3 is provided with a clutch means 4 for connecting a rod 111 to a second piston 21 when the apply of the pressure fluid to a second working chamber 24 of the spring brake means 3 is stopped and a second piston 21 starts to work to a rod 111. This clutch means 4 is provided with a screw 31 provided in the rod 111, a nut member 32 provided in the second piston 21 freely to be rotated, and a stopper means 33 for stopping the rotation of the nut member 32 when the second piston 21 starts to move to the rod 111.
Description
Technical field
The present invention relates to a kind of brake cylinder apparatus of implementing service braking and can being shortened such as the brake cylinder apparatus, particularly axial length of two kinds of brakings of brake application by spring of the braking that is used to park.
Background technology
For example in the chassis brake equipment that railway vehicle is used, except the service braking device of pneumatically work, when the occasion non-compressed air such as parking for a long time, still can lean on by vehicle the spring catcher of spring work even also using.Chassis brake equipment as this service braking device and spring catcher are installed separately separately needs certain installing space.
For this reason, developed and a kind ofly make air brake equipment and spring catcher the two implements brake cylinder apparatus braking, that two brake equipments are made of one via same piston rod.
For example, the spy opens clear 55-160646 communique and discloses a kind of like this brake cylinder apparatus 90, promptly, as shown in figure 15, possess: piston rod 931 is given prominence to, has the 1st piston 93 that the 1st application chamber 94 and the 1st spring 95 act in opposite directions, when pressure fluid acts on the 1st application chamber 94 the 1st piston 93 overcome the 1st spring 95 application force and to service braking mechanism 91 that braking direction moves, and piston rod 931 runs through wherein, having can moving axially and the 2nd piston 98 that the 2nd application chamber 96 and the 2nd spring 97 act in opposite directions along piston rod 931, the brake application by spring mechanism 92 that the 2nd piston 98 moves to aforementioned braking direction under the effect of the application force of the 2nd spring 97 when pressure fluid does not act on the 2nd application chamber 96; Be formed with the fastener 932 that the 2nd piston 98 can contact with it on the piston rod 931.
When pressure fluid acted on the 1st application chamber 94 of service braking mechanism 91, the application force that the 1st piston 93 and piston rod 931 overcome the 1st spring 95 moved to braking direction, was in graphic service braking position.When being in this service braking position, when pressure fluid did not act on the 2nd application chamber 96 of the 1st application chamber 94 of service braking mechanism 91 and brake application by spring mechanism 92, the 2nd piston 98 moved to braking direction along piston rod 931 under the effect of the 2nd spring 97.When the 2nd piston 98 contacted with fastener 932, the force transmission of the 2nd spring 97 was to piston rod 931, and brake application by spring substitutes service braking and works.
It is such to open clear 55-160646 communique as the spy, on piston rod 931, be formed with the occasion of fastener 932, for unclamp in service braking mechanism 91, piston rod 931 do not contact the 2nd piston 98 when withdrawing under the effort of the 1st spring 95 with fastener 93, fastener 932 is to abdicate certain distance at the front end of piston rod 931 to be provided with.Therefore, with till the fastener 932 of piston rod 931 contacts, the 2nd piston 98 will move graphic distance L along piston rod 931 up to the 2nd piston 98.Its result exists such problem, that is, with this distance L correspondingly, brake cylinder apparatus 90 length in the axial direction is longer.
In addition, in the real fair 8-5881 communique, proposed the nested tube of the periphery of piston rod 931 one end can be 98 inconsistent with piston, the other end can with the inconsistent sleeve of the major diameter shoulder that is arranged on piston rod 931 front ends to substitute a kind of like this brake cylinder apparatus of fastener 932.But, be merely able to its length of nested tube and service braking mechanism 91 sleeve that the 1st piston 93 and 931 degree that can shorten of piston rod correspondingly shorten when unclamping, therefore, exist and the special same problem of clear 55-160646 communique of opening, promptly, till making spring brake 92 implement braking, the 2nd piston 98 will move corresponding distance, and brake cylinder apparatus 90 length in the axial direction is longer.
The brake cylinder apparatus that provides a kind of two kinds of brakings of brake application by spring implementing service braking and brake such as being used to park and axial length to be shortened, is provided for this reason.
Summary of the invention
The invention that realizes the technical scheme 1 of above-mentioned purpose belongs to a kind of like this brake cylinder apparatus, promptly, possess: piston rod is given prominence to, has the 1st piston that the 1st application chamber and the 1st spring act in opposite directions, when pressure fluid acts on said the 1st application chamber said the 1st piston overcome said the 1st spring application force and to service braking mechanism that braking direction moves, and said piston rod runs through wherein, have can said piston rod axially on move and the 2nd piston that the 2nd application chamber and the 2nd spring act in opposite directions, the brake application by spring mechanism that said the 2nd piston moves to said braking direction under the effect of the application force of said the 2nd spring when pressure fluid does not act on said the 2nd application chamber; Can implement two kinds of brakings of service braking and brake application by spring, it is characterized in that, be provided with engaging and disengaging gear, when pressure fluid does not act on said the 2nd application chamber and said the 2nd piston when beginning to move with respect to said piston rod, this engaging and disengaging gear makes said piston rod and said the 2nd piston, and the two is connected.
According to above-mentioned formation, when pressure fluid does not act on the 2nd application chamber and the 2nd piston when beginning to move with respect to piston rod, the two links up with piston rod and the 2nd piston by engaging and disengaging gear, via the 2nd piston on piston rod effect brake application by spring power.Therefore, the amount of movement of the 2nd piston is few.
The invention of technical scheme 2 is in technical scheme 1 said brake cylinder apparatus, said engaging and disengaging gear is by the screw thread that is arranged on said piston rod or said the 2nd piston, screw on this screw thread, along with the two relatively move and the nut part that rotates of said piston rod and said the 2nd piston, and when said the 2nd piston begins to move with respect to said piston rod, stop the rotation preventive mechanism of said nut part rotation to constitute.
In the above-described configuration, when implementing service braking, when the piston rod of the 1st piston when braking direction moves, nut part will rotate, therefore, the 2nd position of piston does not change.And do not begin when mobile with respect to piston rod when pressure fluid does not act on the 2nd application chamber, the 2nd piston, the rotation preventive mechanism of engaging and disengaging gear stops the nut part rotation, and therefore, piston rod and the 2nd piston become one and move to braking direction.
The invention of technical scheme 3 is that said rotation preventive mechanism has the engaging mechanism that rotates with said nut part in technical scheme 2 said brake cylinder apparatus, and the rotation of said rotation preventive mechanism is stoped by lockout mechanism that can free clutch.
In the above-described configuration, when implementing brake application by spring, have only the 2nd piston when nut part rotates when braking direction moves, the engaging mechanism of sleeve part and nut part will mesh, and the rotation of nut part is subjected to the prevention of lockout mechanism.Because this lockout mechanism can free clutch, so if in the process of implementing brake application by spring, lockout mechanism is removed, then nut part will rotate, and piston rod can be under the effect of the application force of the 1st spring moves direction and moves to breaking through, and brake application by spring is removed.
The invention of technical scheme 4 is in technical scheme 2 said brake cylinder apparatus, said rotation preventive mechanism by with said nut part position in opposite directions centerline direction that set by force application mechanism, at said piston rod on can be free to slide and rotate the sleeve part that is stoped, and the engaging mechanism that is provided with respectively on the face in opposite directions of said sleeve part and said nut part constitutes.
In the above-described configuration, sleeve part is provided with engaging mechanism, therefore, lockout mechanism can be provided with on the free clutch of sleeve part ground relatively.
The invention of technical scheme 5 is in technical scheme 4 said brake cylinder apparatus, said lockout mechanism is by the tooth periphery that is located at said sleeve cartridge unit, that extend vertically, and have the end tooth that can fasten with this tooth, form to engaging the securing rod that direction depends on; Said tooth length in the axial direction is, is disengaged and said sleeve cartridge unit, no longer fastens with said end tooth when mobile vertically with said the 2nd piston in said engaging.
In the above-described configuration, when the effect that overcomes application force and with securing rod when the direction of engagement release is mentioned, engage releasing between the tooth of the periphery of sleeve part and the end tooth of securing rod, nut part is rotated with the state that is meshed with sleeve part, therefore, the 2nd piston will move to stroke terminal, and brake application by spring is disengaged.When nut part and sleeve part are mobile vertically with the 2nd piston, the tooth of said sleeve part no longer fastens with the end tooth of said securing rod, therefore, and when moving vertically with the 1st piston, nut part and sleeve part rotation are in the state that can implement air brake.
The invention of technical scheme 6 is in technical scheme 3 said brake cylinder apparatus, and said lockout mechanism under the effect of the sliding pin that the 2nd piston towards stroke terminal is pushed, switches to unlocked position from latched position.
In the above-described configuration, when manually unlocking mechanism, the 2nd piston is under the effect of the application force of the 2nd spring and towards stroke terminal, and it is constant that lockout mechanism is remained on the state that switches to unlocked position by sliding pin.Therefore, even the air of sending into to the 2nd application chamber loses pressure, nut part still can rotate, and can make air brake mechanism implement the state of braking by the 1st piston so be in.
The invention of technical scheme 7 is in technical scheme 2 said brake cylinder apparatus, said rotation preventive mechanism is by the tooth periphery that is arranged on said nut part, that extend vertically, and have the end tooth that can fasten with this tooth, to engage the securing rod formation that direction depends on.
In the above-described configuration, be subjected to the 2nd piston pushing and the locked bar of rotation of the nut part that is tending towards rotating stops, brake application by spring mechanism works.When this securing rod of manual releasing, nut part just can rotate, and therefore, the 2nd piston will arrive stroke terminal and brake application by spring mechanism is removed under the effect of the application force of the 2nd spring.
The invention of technical scheme 8 is in technical scheme 7 said brake cylinder apparatus, and said securing rod under the effect of the sliding pin that the 2nd piston that moves towards stroke terminal is pushed, switches to unlocked position from latched position.
In the above-described configuration, when manually unlocking bar, the 2nd piston tends to stroke terminal under the effect of the application force of the 2nd spring, and it is constant that securing rod is remained on the state that switches to unlocked position by sliding pin.Therefore, even the air of sending into to the 2nd application chamber loses pressure, nut part still can rotate, and can make air brake mechanism implement the state of braking by the 1st piston so be in.
The invention of technical scheme 9 is that said engaging and disengaging gear is arranged on interior all sides of said the 2nd application chamber in technical scheme 2 said brake cylinder apparatus.
In the above-described configuration, because the external diameter of the 2nd application chamber of common brake application by spring mechanism is greater than the external diameter of the 1st application chamber of service braking, therefore, can utilize the space of interior all sides of the 2nd application chamber to set the sleeve cartridge unit.
The invention of technical scheme 10 is in one of technical scheme 1～9 in the said brake cylinder apparatus, and said the 1st spring and said the 2nd spring are configured diametrically overlappingly.
In the above-described configuration because the two overlay configuration diametrically of brake application by spring mechanism and service braking mechanism, so can with service brake and spring brake the two in the axial direction contraction in length and become one.
According to the invention of technical scheme 1, the amount of movement of the 2nd piston reduces, and correspondingly the length of brake cylinder apparatus on the piston rod direction can shorten, and makes the miniaturization of brake cylinder apparatus become possibility.In addition, the 2nd spring elongation that acts on the 2nd piston is very little, therefore, extends the spring that cooresponding length can produce set application force with needs and compares, and can use the 2nd thin spring of line footpath.
According to the invention of technical scheme 2, can obtain engaging and disengaging gear simple in structure, that is, the nut part that can rotate freely is set being provided with on the side of piston rod or the 2nd piston on screw thread, the opposing party at them.
According to the invention of technical scheme 3, when implementing brake application by spring,, just can simply brake application by spring be removed with the manual mode mechanism that unlocks.
According to the invention of technical scheme 4, engaging and disengaging gear is with the mobile phase interlock of the 2nd piston piston rod and the 2nd piston to be linked, and therefore, engaging and disengaging gear is moved reliably.
Invention according to technical scheme 5, engaging and to remove between the end tooth of securing rod and the tooth of sleeve part, therefore, after manually removing brake application by spring, even can't act at compressed fluid under the situation of the 2nd application chamber of brake application by spring, while also can make the air brake action with vehicle ' to the garage.
Invention according to technical scheme 6, engage the released state that is disengaged between the end tooth that can keep securing rod by sliding pin and the tooth of sleeve cartridge unit, therefore, after manually removing brake application by spring, even can't act at compressed fluid under the situation of the 2nd application chamber of brake application by spring, while also can make the air brake action with vehicle ' to the garage.
According to the invention of technical scheme 7, have nut part and the structure that securing rod directly engages, therefore, can reduce amount of parts, omit the processing of the complexity be intended to form engaging mechanism.
Invention according to technical scheme 8, engage the released state that is disengaged between the end tooth that can keep securing rod by sliding pin and the tooth of nut part, therefore, after manually removing brake application by spring, even can't act at compressed fluid under the situation of the 2nd application chamber of brake application by spring, while also can make the air brake action with vehicle ' to the garage.
According to the invention of technical scheme 9, in service brake and the incorporate brake cylinder apparatus of spring brake, the engaging and disengaging gear of can packing into compactly can make brake cylinder apparatus keep short axial length.
According to the invention of technical scheme 10, the axial length of service brake and the incorporate brake cylinder apparatus of spring brake is shortened, can combine with make the axial length shortening by engaging and disengaging gear, and make the axial length of brake cylinder apparatus reach minimum.
The simple declaration of accompanying drawing
Fig. 1 is the cutaway view of a form of implementation of brake cylinder apparatus of the present invention.
Fig. 2 is the X-X line cutaway view of Fig. 1.
Fig. 3 is the Y-Y line cutaway view of Fig. 1.
Fig. 4 is the action specification figure in brake cylinder apparatus when action of Fig. 1.
Fig. 5 is the action specification figure in brake cylinder apparatus when action of Fig. 1.
Fig. 6 is the action specification figure in brake cylinder apparatus when action of Fig. 1.
Fig. 7 is the variation of brake cylinder apparatus of the present invention and the cutaway view in when action thereof.
Fig. 8 is the cutaway view of the brake cylinder apparatus of another variation of the present invention.
Fig. 9 is the action specification figure in brake cylinder apparatus when action of Fig. 8.
Figure 10 is the action specification figure in brake cylinder apparatus when action of Fig. 8.
Figure 11 is the cutaway view of the brake cylinder apparatus of another variation of the present invention.
Figure 12 is the action specification figure in brake cylinder apparatus when action of Figure 11.
Figure 13 is the action specification figure in brake cylinder apparatus when action of Figure 11.
Figure 14 is assembled with the cutaway view of the railway vehicle of brake cylinder apparatus of the present invention with brake equipment.
Figure 15 is the cutaway view of existing brake cylinder apparatus.
The working of an invention form
A form of implementation to brake cylinder apparatus of the present invention describes in conjunction with the accompanying drawings.Fig. 1 is the cutaway view of the related brake cylinder apparatus of a form of implementation of the present invention.Fig. 2 is the X-X line cutaway view of Fig. 1.Fig. 3 is the Y-Y line cutaway view of Fig. 1.
Among Fig. 1, brake cylinder apparatus 1 constitutes like this, promptly, the two can implement braking via same piston rod 111 pressure of fluids such as pneumatically and the service braking mechanism 2 of moving and the brake application by spring mechanism of moving by the application force of spring 25 3, and, between the piston 21 of the piston rod 111 of service braking mechanism 2 and brake application by spring mechanism 3, be provided with engaging and disengaging gear 4.
Brake application by spring mechanism 3 constitutes like this, promptly, having piston rod 111 runs through wherein, can be along axially movable the 2nd piston 21 of piston rod 111, and the periphery of the 2nd piston 21 can insert in urceolus 221 wherein with being free to slide and can be inserted in the 2nd fluid cylinder 22 that a side end of the inner core 222 in interior week of cylindric protrusion 211 of the 2nd piston 21 is closed with being free to slide, and, be located between side of the 2nd piston 21 and the 2nd fluid cylinder 22, give compressed-air actuated the 2nd application chamber 24 of row and the 2nd spring 25 that set is provided with in opposite directions via the 2nd mouthful of A between the end of the opposite side of the 2nd piston 21 and urceolus 221.
Engaging and disengaging gear 4 is by the screw thread 31 that is arranged on piston rod 111 peripheries, by bearing 321 obtain the 2nd piston 21 support and can rotate freely, with the nut part 32 that screws on screw thread 31, and rotation preventive mechanism 33 formations that when 21 beginnings of the 2nd piston are moved with respect to piston rod 111, stop nut part 32 rotations.As nut part 32, also can be piston rod 111 can rotate freely ground supported, and and be formed with screw thread between the 2nd piston 21.
Rotation preventive mechanism 33 by with nut part 32 aspectant sleeve parts 35, and set engaging mechanism 36 constitutes on the two forward surface of nut part 32 and sleeve part 35.As this sleeve part 35, be inserted in the inner core 222 and can be free to slide in the axial direction, trend is positioned at the baffle ring 352 of opposite side under the effect of spring 351, and its rotation to a direction is subjected to the prevention of securing rod 38.
As shown in Figure 2, engaging mechanism 36 is by the lip-deep shaggy tooth 322 of a side that is formed at nut part 32, and the shaggy tooth 353 lip-deep, that have with the same shape of Fig. 2 that is formed at the opposite side of sleeve part 35 constitutes.
As shown in Figure 3, be provided with the ratchet 354 that extends vertically, be provided with at the front end of securing rod 38 and be subjected to application force and to the outstanding end tooth 381 of ratchet 354 directions in the periphery of sleeve cartridge unit 35.This ratchet 354 has constituted a kind of like this free-wheel clutch with end tooth 381, promptly, related rotation when nut part 32 is rotated along with moving to a side (braking direction) is stoped, and allows the related rotation of nut part 32 when opposite side (the moving direction of counter) rotation.
In addition, trend ratchet 354 under the effect of the spring 382 of the end tooth 381 of securing rod 38 in being located at the 2nd fluid cylinder 22, and overcome the application force of spring 382 when suspension ring 383 are mentioned and break away from ratchet 354.Get back to Fig. 1, because the ratchet 354 of sleeve part 35 extends vertically, the end tooth 381 of securing rod 38 is fastened on the end of a side of ratchet 354, therefore, even sleeve part 35 to side slip, ratchet 354 is kept with engaging still of end tooth 381.Securing rod 38 with function discussed above constituted stop sleeve part 35 rotations can free clutch lockout mechanism.
Operating principle with the brake cylinder apparatus 1 that as above constitutes is described as follows.Fig. 1 illustrates the two run location when unclamping of service braking mechanism 2 and brake application by spring mechanism 3.Air brake position when Fig. 4 illustrates 2 actions of service braking mechanism.Brake application by spring position when Fig. 5 illustrates 3 actions of brake application by spring mechanism.State when Fig. 6 illustrates manual releasing brake application by spring mechanism 3.
When being in the traveling-position of Fig. 1, supplied with pressurized air to the 2nd mouthful of A, therefore, the application force that the 2nd piston 21 overcomes the 2nd spring 25 moves to the moving direction of counter, and is inconsistent and stop at the there with the end of a side of the 1st fluid cylinder 12.When being in the position that this brake application by spring mechanism 3 unclamps, the engaging mechanism 36 between nut part 32 and the sleeve part 35 is in non-engagement state across very little gap, and engaging and disengaging gear 4 is in non-connecting state.In addition, because pressurized air is discharged from the 1st mouthful of B, therefore, the 1st piston 11 is moved to the place, end of the opposite side of the 1st fluid cylinder 12 in the effect of the application force of the 1st spring 15.When being in the position that this service braking 2 unclamps, piston rod 111 is in the state to the moving direction withdrawal of counter.
When being in the air brake position of Fig. 4, when when the 1st mouthful of B supplies with pressurized air, the application force that the 1st piston 11 and piston rod 111 will overcome the 1st spring 15 moves to braking direction.At this moment, the engaging mechanism 36 between nut part 32 and the sleeve part 35 is in non-engagement state, and engaging and disengaging gear 4 keeps non-connecting state.Because the screw thread 31 of nut part 32 by piston rod 111 rotates, therefore, the 1st piston 11 and piston rod 111 move to braking direction, produce necessary air brake power.
When being in the brake application by spring position of Fig. 5, when supplying with to the 1st mouthful of B under the compressed-air actuated state when pressurized air of the 2nd mouthful of A discharged, the 2nd piston 21 will move to braking direction under the effect of the application force of the 2nd spring 25.At this moment, because nut part 32 moves with the 2nd piston 21, therefore, the engaging mechanism 36 between nut part 32 and the sleeve part 35 becomes engagement, is that engaging and disengaging gear 4 becomes connecting state, thereby stops nut part 32 rotations.Because the ratchet 354 of sleeve part 35 is fastened on the end tooth 381 of securing rod 38, therefore, sleeve part 35 keeps rotating the state that is prevented from and slides vertically with the 2nd piston 21.So, the nut part 32 that the 2nd piston 21 is stoped by rotation and becoming one with piston rod 111, piston rod 111 keeps the state after braking direction moves under the effect of the application force of the 2nd spring 25, produce necessary brake application by spring power.In this brake application by spring position, even the pressure air of supplying with to the 1st mouthful of B for example reduces because of pipe arrangement leaks pressure, brake application by spring power still can be guaranteed.
In occasion from the brake application by spring location restore of Fig. 5 to the air brake position of Fig. 4, owing to supply with pressurized air to the 1st mouthful of B and the 2nd mouthful of A, therefore, though the 1st piston 11 keeps graphic air brake position, the 2nd piston 21 will overcome the application force of the 2nd spring 25 and move to the moving direction of counter.At this moment, although nut part 32 and sleeve part 35 keep engagement by engaging mechanism 36, as shown in Figure 3,, ratchet 354 allow nut part 32 along with moving and right-hand revolution to the moving direction of counter owing to can surmounting end tooth 381.Therefore, 32 rotations of the nut part of Fig. 5, the 2nd piston 21 moves towards the position of Fig. 4, returns to the state of Fig. 4 that nut part 32 separates with engaging mechanism 36 between the sleeve part 35.
When being in the brake application by spring position of Fig. 5, former thereby can't supply with compressed-air actuated occasion in air compressor fault or pipe arrangement breakage etc., can manually brake application by spring power be eliminated.
When the manual releasing brake application by spring of Fig. 6, when with securing rod 38 to the diagram direction of arrow when mentioning, end tooth 381 breaks away from the ratchet 354 of sleeve part 35, engaging mechanism 36 between nut part 32 and the sleeve part 35 can rotate under the situation that keeps engagement, and engaging and disengaging gear 4 integral body will dally.So the 1st piston 11 and the 2nd piston 21 can move to stroke terminal separately under the effect of the application force of the 1st spring 15 and the 2nd spring 25, the 1st piston 11 and piston rod 111 move to the moving direction of counter.Its result can manually remove brake application by spring and make such as railway vehicle and move.
In brake cylinder apparatus 1 discussed above, as shown in Figure 5, switch to the occasion of brake application by spring position from the air brake position, engaging and disengaging gear 4 moves along with moving of the 2nd piston 21, the two links up with piston rod 111 and the 2nd piston 21, therefore, brake application by spring mechanism 3 moves with the very little miles of relative movement M of the 2nd piston 21.Therefore, can make the axial length of service braking mechanism 2 and brake application by spring mechanism 3 incorporate brake cylinder apparatus 1 shorten.In addition, the 2nd spring 25 only extends and very little just can make set effort in the 2nd piston 21 apart from M, therefore, can produce set application force with the long distance of elongation and compare, and can use the 2nd thinner spring 25 of line footpath.
In addition, among Fig. 1, engaging and disengaging gear 4 constitutes to have screw thread 31, nut part 32 and rotation preventive mechanism 33, and the mobile rotation that changes nut part 32 into of the 2nd piston 21 is only stoped with the rotation of 33 pairs of nut parts 32 of rotation preventive mechanism and makes engaging and disengaging gear 4 become connecting state.Therefore, can constitute engaging and disengaging gear 4 by the combination of mechanical part, can make the simple in structure of engaging and disengaging gear 4.
In addition, among Fig. 1, rotation preventive mechanism 33 has sleeve part 35 and engaging mechanism 36, when nut part 32 when sleeve part 35 moves, make engaging and disengaging gear 4 be in connecting state by engaging mechanism 36.Therefore, engaging and disengaging gear 4 can move reliably.
In addition,, stop the securing rod (lockout mechanism) 38 of sleeve part 35 rotations can free clutch, therefore,, just can manually remove brake application by spring as shown in Figure 6 simply as long as securing rod 38 is mentioned in the brake application by spring position of Fig. 5.
In addition, among Fig. 1, because engaging and disengaging gear 4 is arranged on interior all sides of inner core 222 of the 2nd fluid cylinder 22 of brake application by spring mechanism 3, therefore, the engaging and disengaging gear 4 of packing under the situation that can not extend at the axial length of brake cylinder apparatus 1.Usually, the diameter of the 2nd fluid cylinder 22 (the 2nd piston 21) is greater than the 1st fluid cylinder 12 (the 1st piston 11), so can be simply obtain the space that holds engaging and disengaging gear 4 in the inboard of the 2nd fluid cylinder 22.
Have again, among Fig. 1, the 1st spring 15 of service braking mechanism 2 is configured diametrically overlappingly with the 2nd spring 25 of brake application by spring mechanism 3, therefore, the two axial length of service braking mechanism 2 and brake application by spring mechanism 3 can be shortened and is made of one, with combine by adopting engaging and disengaging gear 4 to shorten axial length, can make the axial length of brake cylinder apparatus 1 reach minimum.
Air brake position when service braking mechanism 2 worked after Fig. 7 illustrated the variation of brake cylinder apparatus and manually removes brake application by spring.Under the state with the open brake application by spring of manual mode shown in Figure 6, when manually the releasing brake application by spring discharges the securing rod 38 that is raised afterwards, to sleeve part 35 1 side shiftings, the two engages securing rod 38 to make end tooth 381 and ratchet 354 once more under the effect of the application force of spring 382.Afterwards, to after the air compressor place under repair pressurized air being fed to the 2nd mouthful of A, can make the 2nd piston 21 overcome the application force of the 2nd spring 25 and return to the run location of Fig. 1.
When reverting to run location, if occur former thereby can't be with the situation of the 2nd mouthful of A of compressed-air supply because of operation solenoid valve failure etc., then because the two engagement and the engaging of end tooth 381 and ratchet 354 of nut part 32 and sleeve part 35, make the 1st piston 11 and the 2nd piston 21 become one, service braking mechanism 2 is with inoperative.
As the brake cylinder apparatus 1A of Fig. 7, when manual releasing brake application by spring shown in Figure 6, even can't be with the 2nd mouthful of A of compressed-air supply, service braking mechanism 2 still can work.Among Fig. 7, the axial length of ratchet 354 is adjusted than the weak point of Fig. 1.The axial length of ratchet 354 is such degree, promptly, in the air brake position of the run location of Fig. 1, Fig. 4 and during the brake application by spring position of Fig. 5, ratchet 351 can engage with end tooth 381, and at the 2nd piston 21 shown in Figure 7 with sleeve part 35 near braking direction moves to stroke terminal the time, the two no longer engages ratchet 354 and end tooth 381.
As shown in Figure 6, when manually removing the securing rod that will mention behind the brake application by spring 38 and discharging, securing rod 38 under the effect of the application force of spring 382 to sleeve part 35 1 side shiftings.
And when being in the air brake position of Fig. 7, the end tooth 381 of securing rod 38 is urged in the periphery of sleeve part 35 and can fasten with ratchet 354.Under this state, the two can keep nut part 32 and sleeve part 35 engagement and rotate, and allows the 1st piston 11 to move.
Thus,, can make the 1st piston 11 limits that nut part 32 and sleeve part 35 rotation limits are moved to braking direction, make service braking mechanism 2 work by pressurized air is supplied with to the 1st mouthful of B.And by pressurized air is discharged from the 1st mouthful of B, the application force that can make the 1st piston 11 overcome the 1st spring 15 moves to the moving direction of counter, and service braking mechanism 2 is discharged.Its result, manually remove brake application by spring after, even can't supply with pressurized air, air brake is worked and make vehicle drive to the garage always to the 2nd mouthful of A.
As mentioned above, in Fig. 7, adjust the axial length of ratchet 354 short than Fig. 1, therefore, manually remove brake application by spring after, can't be even occur with the situation of the 2nd mouthful of A of compressed-air supply, air brake is worked and make vehicle drive to the garage always.
In conjunction with Fig. 8 to Figure 10 the related brake cylinder apparatus 1B of another variation is described.Fig. 8 illustrates the operating state when being in the air brake position, and Fig. 9 illustrates the operating state when being in the brake application by spring position, and Figure 10 illustrates that brake application by spring is disappeared by separating and operating state when being in the air brake position.Among Fig. 8, be with Fig. 1 difference that being provided with on inner core 222 parts of the 2nd fluid cylinder 22 can be by the sliding pin 39 of the 2nd piston 21 pushings, securing rod 38 switches to unlocked position from latched position under the effect of this sliding pin 39.All the other are identical with Fig. 1.
Be loaded in the sliding pin 39 in the inner core 222 and also can be free to slide vertically.A side relative with the 2nd piston 21 of sliding pin 39 is from the outstanding pin 391 of the sidewall of inner core 222, and a side that fastens with securing rod 38 of sliding pin 39 is dip plane 392.To the way of securing rod 38 front ends, be formed with cross-drilled hole 384 at the position that sliding pin 39 engages with it with dip plane 3841.When the dip plane 392 that is in sliding pin 39 was fastened on state on the dip plane 3841 of securing rod 38, pin 391 sidewalls from inner core 222 highlighted, and the end tooth 381 that is subjected to the securing rod 38 of spring 382 effects engages with the ratchet 354 of sleeve part 35.
Operating principle to this brake cylinder apparatus 1B describes.Among Fig. 8, when with the 2nd mouthful of A of compressed-air supply, nut part 32 is in non-engagement state with sleeve part 35, and according to the 1st mouthful of B compressed and supplied air, air brake is worked.Among Fig. 9, when when the 1st mouthful of B and the 2nd mouthful of A discharge pressurized air, the two is meshed nut part 32 and sleeve part 35 at engaging mechanism 36 places, and the rotation of nut part 32 is stoped, and therefore, implements the brake application by spring by 25 enforcements of the 2nd spring.Among Fig. 9, when in order to remove brake application by spring securing rod 38 being mentioned, the end tooth 381 of securing rod 38 is disengaged with the engaging of ratchet 354 of sleeve part 35.So nut part 32 can rotate, the 2nd piston 21 is subjected to the pushing of the 2nd spring 25 and moves, and the pin 391 of sliding pin 39 is subjected to the pushing of the 2nd piston 21.
Among Figure 10, when the 2nd piston 21 moved to stroke terminal, the dip plane 392 of sliding pin 39 pushed away on the dip plane 3841 with securing rod 38, the state that the end tooth 381 that keeps securing rod 38 and engaging of the ratchet 354 of sleeve part 35 are disengaged, was released state.In this case, there is not pressure and when the 1st mouthful of B supplies with pressurized air, air brake will be worked as the 2nd mouthful of A.Therefore, manually remove brake application by spring after, even take place and can't supply with compressed-air actuated situation to the 2nd mouthful of A, also can make air brake work and with vehicle ' to the garage.
With reference to Figure 11 to Figure 13 the related brake cylinder apparatus 1C of another variation is described.Figure 11 illustrates the operating state when being in the air brake position, and Figure 12 illustrates the operating state when being in the brake application by spring position, and Figure 13 illustrates that brake application by spring is disappeared by separating and operating state when being in the air brake position.Among Figure 11, be that with the difference of Fig. 8 the two is one for nut part and sleeve part.
Operating principle to this brake cylinder apparatus 1C describes.Among Figure 11, when when the 2nd mouthful of A supplies with pressurized air, the thrust baring 345 of the 2nd piston 21 leaves nut part 34, and nut part 34 can rotate freely.Therefore, along with supplying with pressurized air and implement air brake to the 1st mouthful of B.Among Figure 12, when when the 1st mouthful of B and the 2nd mouthful of A discharge pressurized air, the 2nd piston 21 moves nut part 34 vertically, the ratchet 346 of nut part 34 engages with the end tooth 381 of securing rod 38, the rotation of nut part 34 is prevented from, and therefore, implements the brake application by spring of implementing by the 2nd spring 25.Among Figure 12, when in order to remove brake application by spring securing rod 38 being mentioned, nut part 34 just can rotate, and the 2nd piston 21 is subjected to the pushing of the 2nd spring 25 and moves.
Among Figure 13, when the 2nd piston 21 moves to stroke terminal, the released state of securing rod 38 is maintained by sliding pin 39.In this case, there is not pressure and when the 1st mouthful of B supplies with pressurized air, air brake will be worked as the 2nd mouthful of A.Therefore, manually remove brake application by spring after, even take place and can't supply with compressed-air actuated situation to the 2nd mouthful of A, also can make air brake work and with vehicle ' to the garage.
When adopting nut part 34 as mentioned above with structure that securing rod 38 directly engages, can reduce the sleeve part 35 cooresponding parts with Fig. 8, can omit the work of making the engaging mechanism 36 of complexity between sleeve part 35 and the nut part 32.
Figure 14 illustrates an example of the chassis brake equipment that the railway vehicle of having equipped the brake cylinder apparatus 1 with above-mentioned advantage uses.Among Figure 14, chassis brake equipment 50 lateral inclination above shell 51 is installed brake cylinder apparatus 1, and installation stop mechanism 52 in approximate horizontal ground forms below shell 51.This brake cylinder apparatus 1 and stop mechanism 52 are provided with highlightedly towards the same side.
In shell 51, in to be equipped with axle 53 be the 1st lever 54 of fulcrum.The front end that links the piston rod 111 that brake cylinder apparatus 1 is arranged on the end on the long limit 541 of the 1st lever 54 in minor face 542 1 sides of the 1st lever 54, is supported to have the bar free to rotate 521 of stop mechanism 52 via automatic backlash adjusting mechanism 55.Keeping body 56 as the brake shoe of supporting with axle at the front end of the bar 521 of stop mechanism 52, is the 2nd lever 58 and the binding that brake shoe keeps the axle 59 of body 56 of fulcrum by the axle 57 with shell 51, is keeping graphic movement posture.
The chassis brake equipment 50 that this railway vehicle is used is equipped in the narrower position of the chassis with 4 wheels.Therefore, be necessary to do the integral body of chassis brake equipment 50 less, can effectively satisfy this requirement and adopt graphic axial length to reach minimum brake cylinder apparatus 1.
But, the incorporate form of service braking mechanism and brake application by spring mechanism has many kinds, be not limited to the such form of Fig. 2, even the brake cylinder apparatus of the 2nd spring arranged in series of the 1st spring of, service braking mechanism disclosed and brake application by spring mechanism for real fair 8-5881 communique, also can be suitable for aforementioned engaging and disengaging gear, the axial length of brake cylinder apparatus is shortened.
Claims (10)
1. brake cylinder apparatus, possess: piston rod is given prominence to, has the 1st piston that the 1st application chamber and the 1st spring act in opposite directions, when pressure fluid acts on said the 1st application chamber said the 1st piston overcome said the 1st spring application force and to service braking mechanism that braking direction moves, and said piston rod runs through wherein, have can said piston rod axially on move and the 2nd piston that the 2nd application chamber and the 2nd spring act in opposite directions, the brake application by spring mechanism that said the 2nd piston moves to said braking direction under the effect of the application force of said the 2nd spring when pressure fluid does not act on said the 2nd application chamber; Can implement two kinds of brakings of service braking and brake application by spring, it is characterized in that,
Be provided with engaging and disengaging gear, when pressure fluid does not act on said the 2nd application chamber and said the 2nd piston when beginning to move with respect to said piston rod, this engaging and disengaging gear links said piston rod and said the 2nd piston.
2. as the said brake cylinder apparatus of claim 1, it is characterized in that, said engaging and disengaging gear is by the screw thread that is arranged on said piston rod or said the 2nd piston, screw on this screw thread, along with the two relatively move and the nut part that rotates of said piston rod and said the 2nd piston, and when said the 2nd piston begins to move with respect to said piston rod, stop the rotation preventive mechanism of said nut part rotation to constitute.
3. as the said brake cylinder apparatus of claim 2, it is characterized in that said rotation preventive mechanism has the engaging mechanism that rotates with said nut part, the rotation of said rotation preventive mechanism is stoped by lockout mechanism that can free clutch.
4. as the said brake cylinder apparatus of claim 2, it is characterized in that, said rotation preventive mechanism by with said nut part position in opposite directions centerline direction that set by force application mechanism, at said piston rod on the sleeve part that can be free to slide and be stoped by lockout mechanism rotation, and the engaging mechanism that is provided with respectively on the face in opposite directions of said sleeve part and said nut part constitutes.
5. as the said brake cylinder apparatus of claim 4, it is characterized in that said lockout mechanism is by the tooth periphery that is located at said sleeve part, that extend vertically, and have the end tooth that can fasten with this tooth, form to engaging the securing rod that direction depends on; Said tooth length in the axial direction is, is disengaged and said sleeve part, no longer fastens with said end tooth when mobile vertically with said the 2nd piston in said engaging.
6. as the said brake cylinder apparatus of claim 3, it is characterized in that said lockout mechanism under the effect of the sliding pin that the 2nd piston towards stroke terminal is pushed, switches to unlocked position from latched position.
7. as the said brake cylinder apparatus of claim 2, it is characterized in that said rotation preventive mechanism is by the tooth periphery that is arranged on said nut part, that extend vertically, and have the end tooth that can fasten with this tooth, to engage the securing rod formation that direction depends on.
8. as the said brake cylinder apparatus of claim 7, it is characterized in that said securing rod under the effect of the sliding pin that the 2nd piston towards stroke terminal is pushed, switches to unlocked position from latched position.
9. as the said brake cylinder apparatus of claim 2, it is characterized in that said engaging and disengaging gear is arranged on interior all sides of said the 2nd application chamber.
10. as the said brake cylinder apparatus of the claim of one of claim 1～9, it is characterized in that said the 1st spring and said the 2nd spring are configured diametrically overlappingly.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000348287A JP3706539B2 (en) | 1999-11-16 | 2000-11-15 | Brake cylinder device |
| JP348287/00 | 2000-11-15 | ||
| JP348287/2000 | 2000-11-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1353061A true CN1353061A (en) | 2002-06-12 |
| CN1165441C CN1165441C (en) | 2004-09-08 |
Family
ID=18821897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01125422XA Expired - Lifetime CN1165441C (en) | 2000-11-15 | 2001-08-15 | Brake cylinder apparatus |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100476835B1 (en) |
| CN (1) | CN1165441C (en) |
| TW (1) | TW495456B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100552252C (en) * | 2005-01-11 | 2009-10-21 | 威伯科有限公司 | Master cylinder with parking brake function |
| CN100564122C (en) * | 2004-09-06 | 2009-12-02 | 克诺尔商用车制动***有限公司 | The pedal brake and the spring energy-storage brake cylinder of combination |
| CN101367379B (en) * | 2008-05-22 | 2010-06-02 | 芜湖盛力制动有限责任公司 | Hydraulic parking braking cylinder |
| CN102257291A (en) * | 2008-12-17 | 2011-11-23 | 纳博特斯克株式会社 | Brake cylinder device and unit brake |
| CN101626928B (en) * | 2007-03-07 | 2013-05-22 | 纳博特斯克株式会社 | Unit brake |
| CN101516697B (en) * | 2006-09-22 | 2013-06-19 | 纳博特斯克株式会社 | Brake cylinder device and unit brake using the same |
| CN103717935A (en) * | 2011-07-26 | 2014-04-09 | 纳博特斯克有限公司 | Unit brake |
| CN106662184A (en) * | 2014-08-18 | 2017-05-10 | Ｋｙｂ株式会社 | Parking brake unit |
| CN109838482A (en) * | 2017-11-24 | 2019-06-04 | 常州中车铁马科技实业有限公司 | Rail traffic vehicles parking brake device and its hand relieving method |
| CN111994287A (en) * | 2020-08-11 | 2020-11-27 | 成都飞亚航空设备应用研究所有限公司 | But manual clutch of auto-lock |
| CN114834413A (en) * | 2021-02-01 | 2022-08-02 | 纳博特斯克有限公司 | Brake system, control method for brake device, control program, and control device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7926628B2 (en) * | 2008-06-12 | 2011-04-19 | Wabtec Holding Corp. | Spring-applied parking brake with manual release and reapply |
| GB2469088A (en) * | 2009-04-01 | 2010-10-06 | Haldex Brake Products Ltd | Brake actuator and lock control valve |
| DE102011119998A1 (en) * | 2011-12-02 | 2013-06-06 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Spring brake cylinder with emergency release device |
| KR101712305B1 (en) * | 2013-04-03 | 2017-03-03 | 나부테스코 가부시키가이샤 | Brake cylinder device and brake device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1458391A (en) * | 1973-02-24 | 1976-12-15 | Davies Metcalfe Ltd | Spring brake unit |
| JPH01203726A (en) * | 1988-02-09 | 1989-08-16 | Nippon Air Brake Co Ltd | Manual unfastening device for spring brake cylinder |
| JP3706539B2 (en) * | 1999-11-16 | 2005-10-12 | ナブテスコ株式会社 | Brake cylinder device |
| US6435321B1 (en) * | 2000-11-16 | 2002-08-20 | Nabco, Ltd | Brake cylinder apparatus |
-
2001
- 2001-08-02 TW TW090118876A patent/TW495456B/en not_active IP Right Cessation
- 2001-08-15 CN CNB01125422XA patent/CN1165441C/en not_active Expired - Lifetime
- 2001-08-18 KR KR10-2001-0049731A patent/KR100476835B1/en not_active IP Right Cessation
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564122C (en) * | 2004-09-06 | 2009-12-02 | 克诺尔商用车制动***有限公司 | The pedal brake and the spring energy-storage brake cylinder of combination |
| CN100552252C (en) * | 2005-01-11 | 2009-10-21 | 威伯科有限公司 | Master cylinder with parking brake function |
| CN101516697B (en) * | 2006-09-22 | 2013-06-19 | 纳博特斯克株式会社 | Brake cylinder device and unit brake using the same |
| CN101626928B (en) * | 2007-03-07 | 2013-05-22 | 纳博特斯克株式会社 | Unit brake |
| CN101367379B (en) * | 2008-05-22 | 2010-06-02 | 芜湖盛力制动有限责任公司 | Hydraulic parking braking cylinder |
| CN102257291A (en) * | 2008-12-17 | 2011-11-23 | 纳博特斯克株式会社 | Brake cylinder device and unit brake |
| CN102257291B (en) * | 2008-12-17 | 2014-02-19 | 纳博特斯克株式会社 | Brake cylinder device and unit brake |
| CN103717935B (en) * | 2011-07-26 | 2016-03-30 | 纳博特斯克有限公司 | Unit brake |
| CN103717935A (en) * | 2011-07-26 | 2014-04-09 | 纳博特斯克有限公司 | Unit brake |
| CN106662184A (en) * | 2014-08-18 | 2017-05-10 | Ｋｙｂ株式会社 | Parking brake unit |
| CN106662184B (en) * | 2014-08-18 | 2019-07-19 | Ｋｙｂ株式会社 | Parking brake unit |
| CN109838482A (en) * | 2017-11-24 | 2019-06-04 | 常州中车铁马科技实业有限公司 | Rail traffic vehicles parking brake device and its hand relieving method |
| CN109838482B (en) * | 2017-11-24 | 2024-04-30 | 常州中车铁马科技实业有限公司 | Parking brake device for rail transit vehicle and manual relieving method thereof |
| CN111994287A (en) * | 2020-08-11 | 2020-11-27 | 成都飞亚航空设备应用研究所有限公司 | But manual clutch of auto-lock |
| CN111994287B (en) * | 2020-08-11 | 2022-03-29 | 成都飞亚航空设备应用研究所有限公司 | But manual clutch of auto-lock |
| CN114834413A (en) * | 2021-02-01 | 2022-08-02 | 纳博特斯克有限公司 | Brake system, control method for brake device, control program, and control device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100476835B1 (en) | 2005-03-18 |
| KR20020038463A (en) | 2002-05-23 |
| CN1165441C (en) | 2004-09-08 |
| TW495456B (en) | 2002-07-21 |
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