CN103511517B - Energy-storage type park unit brake cylinder - Google Patents
Energy-storage type park unit brake cylinder Download PDFInfo
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- CN103511517B CN103511517B CN201210221712.7A CN201210221712A CN103511517B CN 103511517 B CN103511517 B CN 103511517B CN 201210221712 A CN201210221712 A CN 201210221712A CN 103511517 B CN103511517 B CN 103511517B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims description 31
- 230000033001 locomotion Effects 0.000 claims description 28
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
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Abstract
The invention discloses a kind of energy-storage type park unit brake cylinder, comprise unit brake cylinder and Parking Brake Cylinders two-part, brake piston comprises the piston only and piston tube that coordinate with brake cylinder casing inwall, one end of brake cylinder casing is connected with intermediate, release spring is had between intermediate and brake piston, the periphery of piston tube and the center tube inwall of intermediate are slidably matched, piston tube is connected with adjusting nut composition and guiding nut composition, resetting-mechanism is by leading screw, the compositions such as yoke, screw mandrel is connected with adjusting nut and guiding nut by non-self-locking nut, parking brake cylinder portion comprise be provided with the second suction port park cylinder body, park piston, park adjusting nut, park spring, guide finger, gear ring, hand braking cover, ball assembly, throw-out collar, piston tube lid and hand relieving device, the one end of parking cylinder body is fixedly connected with intermediate, Parking Brake Cylinders of the present invention and unit brake cylinder integrate, and compact structure, volume is little, be convenient to install.
Description
Technical field
The present invention relates to a kind of braking device of rail traffic vehicles, particularly a kind of unit brake cylinder that can realize rail traffic vehicles execution parking brake function.
Background technique
Nowadays air damping be widely used on rail traffic vehicles, and brake cylinder is then a kind of device gross vehicle airduct air pressure being delivered to foundation brake part, thus make vehicle staticly carry out service brake from moving to.Because air damping inevitably exists leakage, railway locomotive parking for a long time on the line or in storehouse can not be kept, under the effect of the external force such as wind-force, ramp sliding force, vehicle is easily caused to produce the unexpected car that slips, there is potential safety hazard, therefore rail traffic vehicles not only needs running braking function, also needs parking brake function.
Track traffic parking brake is broadly divided into two large classes by action principle: 1. hand braking: hand braking is by rotating a manual control dish, through sprocket wheel chain transmission, pull the transmission lever on bogie and be applied to foundation brake, and then braking is implemented to wheel; Opposite spin dashboard during alleviation, the reaction force by release spring alleviates parking brake effect.The shortcoming of hand brake device needs human control, and installing space is large, and braking force size difficulty controls.2. energy storing brake: the action principle of energy storing brake is then stored energy when utilizing spring-compressed, release energy again during elongation (generation spring force) thus be applied on bogie brake and produce parking brake, the compression of spring and elongation adopt air to control, therefore just include parking brake system in air brake control system completely, greatly facilitate manipulation work.Existing loaded brake cylinder is all freestanding, and its shortcoming to have an independently unit brake cylinder, has an independently Parking Brake Cylinders again, and thus volume is large, installation is inconvenient.And the piston of parking of existing accumulation of energy Parking Brake Cylinders is directly installed on hand braking putting by non-self-lock-ing screw thread, during alleviation, must pin be drawn to pull out in the teeth groove of hand braking cover alleviation all the time.Also must pin be drawn pull out alleviation when parking cylinder inflation after hand relieving, otherwise park cylinder and can not inflate, park piston and can not arrive tram and park spring energy-storage to compress, thus lose its due function.
Summary of the invention
The object of the present invention is to provide a kind of Parking Brake Cylinders and unit brake cylinder to integrate and compact structure, volume little, be convenient to install energy-storage type park unit brake cylinder.
The technological scheme realizing above-mentioned purpose is: a kind of energy-storage type park unit brake cylinder, comprise unit brake cylinder part and Parking Brake Cylinders part two-part, described unit brake cylinder part comprises brake cylinder, resetting-mechanism and clearance adjustment mechanism, described brake cylinder comprises the brake cylinder casing being provided with the first suction port and the brake piston be arranged in brake cylinder casing, and described brake piston comprises the piston only coordinated with brake cylinder casing inwall and the piston tube extended to side in the middle part of piston only; One end of described brake cylinder casing is fixedly connected with intermediate, is provided with release spring between intermediate and the piston only of brake piston; Described intermediate has center tube, and the periphery of the piston tube of brake piston and the center tube inwall of intermediate are slidably matched, and end is stretched out outside center tube; Described resetting-mechanism comprises screw mandrel; Described clearance adjustment mechanism comprises guiding nut composition and adjusting nut composition, and is all connected with the wire rod thread of resetting-mechanism by non-self-lock-ing screw thread;
Described guiding nut composition comprises piston tube lid, guiding nut, guide springs, guiding nut bearing and tapered sleeve, piston tube lid and tapered sleeve are all connected with piston tube inner hole thread, cone match is had between guiding nut and tapered sleeve, guide springs is placed between piston tube lid and guiding nut bearing, guide springs one end and piston tube lid offset, the other end is offseted by guiding nut bearing and guiding nut, under the effect of guide springs, guiding nut bearing promotes the taper-face contact between guiding nut and tapered sleeve, the endoporus of guiding nut is shaped with non-self-lock-ing screw thread, and be connected with the wire rod thread of resetting-mechanism,
Described adjusting nut composition comprises adjusting nut, cone tooth sliding sleeve, Regulation spring and adjusting nut bearing, cone tooth sliding sleeve periphery and the piston tube endoporus of adjusting nut composition are slidably matched, cone tooth sliding sleeve there is key to be placed in the guide hole of piston tube, key is also inserted in the guide hole of center tube simultaneously, make cone tooth sliding sleeve can slide axially in piston tube but can not rotate, cone tooth is all shaped with between cone tooth sliding sleeve and adjusting nut, Regulation spring is placed between adjusting nut bearing and cone tooth sliding sleeve, under the effect of Regulation spring, adjusting nut bearing and adjusting nut offset, adjusting nut is engaged with the cone tooth of cone tooth sliding sleeve, the endoporus of adjusting nut is shaped with non-self-lock-ing screw thread, and be connected with the wire rod thread of resetting-mechanism,
Described Parking Brake Cylinders part comprises and is provided with the parking cylinder body, park piston, park adjusting nut, park spring of the second suction port, guide finger, hand braking grip assembly and hand relieving device; Described one end of parking cylinder body is fixedly connected with intermediate, parks piston and is located at and parks in cylinder body and be slidably matched with it, parks spring and is against and parks between piston and intermediate; Described guide finger is located to park between piston and intermediate and parks piston can only carry out straight line motion with constraint; Described hand braking grip assembly comprises hand braking cover, gear ring, ball assembly and throw-out collar, a part of inwall of hand braking cover and the center tube periphery of intermediate are slidably matched, another part inner wall sleeve is in the piston tube of brake piston, and the outer wall of hand braking cover has non-self-lock-ing screw thread; Described throw-out collar is loosely enclosed within the piston tube of brake piston, clips ball assembly between throw-out collar and hand braking cover; Described throw-out collar and piston tube lid offset; It is outer and be fixedly connected with hand braking cover that described gear ring is enclosed within hand braking cover; Described hand relieving device is installed in be parked on cylinder body, and hand relieving device has and draws pin and draw pin can be inserted in the teeth groove of gear ring;
Described adjusting nut of parking is placed in and parks in the center hole of piston, and by a conical surface with park piston and coordinate, and by non-self-lock-ing thread bush on hand braking cover; Park adjusting nut also compressed and park Regulation spring, the other end parking Regulation spring has compressed thrust-bearing, thrust-bearing under the effect of parking Regulation spring with park piston and offset.
Described parking on piston is provided with jump ring, and jump ring is pressed on thrust-bearing.
Described gear ring and hand braking cover are fixed together by screw, or by interference fit or be fixedly connected by welding together.
Described hand relieving device also comprises alleviation and draws key seat, flap, stay cord assembly, connection set and spring, its medium pulling rope assembly draws pin by connection set connection, draw pin to be slidably matched be inserted in alleviate draw in the pin-and-hole of key seat, flap is fixed on alleviation and draws on key seat, spring housing draw on pin and one end and draw that the step on pin offsets, the other end offsets with flap, alleviate to draw key seat and park cylinder body to be fixed together by resilient key; Described connection set comprises lining, resilient pad, nuts and bolt, and two linings are inserted in the stay cord hole at stay cord assembly two ends respectively, bolt through lining, draw the attachment hole of pin after adopt resilient pad, nut fixes.
Described hand relieving device also comprises dirt-proof boot, one end of dirt-proof boot be fixed on draw on pin, the other end is fixed on flap.
Described resetting-mechanism also comprises yoke, reduction nut and Returnning spring, reduction nut is fixedly connected with screw mandrel by pin, between screw mandrel and reduction nut, yoke is housed, yoke and screw mandrel are slidably matched, and have end-tooth to be meshed, Returnning spring is placed between reduction nut and yoke, and under action of reset spring, screw mandrel and yoke rely on end-tooth to mesh together.
The technique effect that the present invention produces: after adopting the structure of technique scheme, loaded brake cylinder and unit brake cylinder organically closely can be integrated, by reasonable structural design cleverly, make compact structure, volume little, be convenient to install, service brake can be realized, also can realize parking brake, form a kind of integrated unit brake cylinder parking function.The present invention is by the air pressure size variation of outside input the second suction port, and park the spring energy storage effect of spring, make to park piston and carry out side-to-side movement according to parking requirement, drive Lever type brake clamp (the not comprising in the present invention) action of resetting-mechanism part and connection, to realize brake lining to the clamping of brake disc and loosening up, and then realize parking brake and the alleviation of vehicle.Because the present invention is built-in with and parks adjusting nut parking piston, and by a conical surface with park piston contact, be equipped with thrust-bearing at the other end parking adjusting nut and park Regulation spring, park adjusting nut and be directly installed on hand braking putting by non-self-lock-ing screw thread, like this when Parking Brake Cylinders and unit brake cylinder are all in relieved state, drawing pin can inflate Parking Brake Cylinders without the need to pulling out alleviation, making to park spring and being compressed with energy storage.The present invention not only has conventional running braking function, also has parking brake function.In addition, also there is following characteristics:
1), parking brake possesses that inflation is alleviated, the function of bleeder brake, braking and alleviate precisely;
2), parking brake also possesses hand relieving function (by pulling pin);
3), by parking brake function i ntegration on unit brake cylinder, compact structure, takes up room little;
4), reliability and Security high;
5) dismounting, maintenance, debugging, is convenient to;
6), applicability is wide, can be widely used in the vehicle needing parking brake, be particularly useful for rail traffic vehicles.
Accompanying drawing explanation
Fig. 1 is the structural representation of energy-storage type park unit brake cylinder of the present invention;
Fig. 2 is the phase diagram of the present invention when realizing parking brake function;
Fig. 3 is the phase diagram of the present invention when realizing the pneumatic alleviation of parking brake;
Fig. 4 is the phase diagram of the present invention when realizing parking brake hand relieving;
Fig. 5 is the adjusting nut composition schematic diagram in the present invention;
Fig. 6 is the guiding nut composition schematic diagram in the present invention;
Fig. 7 is that the piston of parking in the present invention forms schematic diagram;
Fig. 8 is the resetting-mechanism schematic diagram in the present invention;
Fig. 9 is the intermediate structure schematic diagram in the present invention;
Figure 10 is the left view of Fig. 9;
Figure 11 is the left view of Fig. 1;
Figure 12 is the structural representation of the hand relieving device in Figure 11.
Embodiment
The present invention is further detailed explanation for the embodiment provided below in conjunction with accompanying drawing.
As shown in Fig. 1 ~ 12, a kind of energy-storage type park unit brake cylinder of the present invention, comprise unit brake cylinder part and Parking Brake Cylinders part two-part, described unit brake cylinder part comprises brake cylinder 4, resetting-mechanism 21 and clearance adjustment mechanism, described brake cylinder 4 comprises the brake cylinder casing 1 being provided with the first suction port 1-1 and the brake piston 2 be arranged in brake cylinder casing 1, and described brake piston 2 comprises the piston only 2-1 coordinated with brake cylinder casing 1 inwall and the piston tube 2-2 extended to side in the middle part of piston only 2-1; One end of described brake cylinder casing 1 is fixedly connected with intermediate 6, is provided with release spring 3 between the piston only 2-1 of intermediate 6 and brake piston 2; Described intermediate 6 has center tube 6-1, and the periphery of the piston tube 2-2 of brake piston 2 and the center tube 6-1 inwall of intermediate 6 are slidably matched, and end is stretched out outside center tube 6-1; Described resetting-mechanism 21 comprises screw mandrel 21-4; Described clearance adjustment mechanism comprises guiding nut composition 22 and adjusting nut composition 23, and is all threaded with the screw mandrel 21-4 of resetting-mechanism 21 by non-self-lock-ing screw thread;
Described guiding nut composition 22 comprises piston tube lid 22-1, guiding nut 22-4, guide springs 22-2, guiding nut bearing 22-3 and tapered sleeve 22-5, piston tube lid 22-1 is all connected with piston tube 2-2 inner hole thread with tapered sleeve 22-5, conical surface M is had to coordinate between guiding nut 22-4 with tapered sleeve 22-5, guide springs 22-2 is placed between piston tube lid 22-1 and guiding nut bearing 22-3, guide springs 22-2 one end and piston tube lid 22-1 offset, the other end is offseted by guiding nut bearing 22-3 and guiding nut 22-4, under the effect of guide springs 22-2, guiding nut bearing 22-3 promotes guiding nut 22-4 and contacts with the conical surface M between tapered sleeve 22-5, the endoporus of guiding nut 22-4 is shaped with non-self-lock-ing screw thread, and be threaded with the screw mandrel 21-4 of resetting-mechanism 21,
Described adjusting nut composition 23 comprises adjusting nut 23-6, cone tooth sliding sleeve 23-7, Regulation spring 23-3 and adjusting nut bearing 23-4, cone tooth sliding sleeve 23-7 periphery and the piston tube 2-2 endoporus of adjusting nut composition 23 are slidably matched, cone tooth sliding sleeve 23-7 there is key 23-2 to be placed in the guide hole 2-3 of piston tube 2-2, key 23-2 is also inserted in the guide hole 6-2 of center tube 6-1 simultaneously, make cone tooth sliding sleeve 23-7 can slide axially in piston tube 2-2 but can not rotate, all be shaped with between cone tooth sliding sleeve 23-7 and adjusting nut 23-6 and bore tooth Z, Regulation spring 23-3 is placed between adjusting nut bearing 23-4 and cone tooth sliding sleeve 23-7, under the effect of Regulation spring 23-3, adjusting nut bearing 23-4 and adjusting nut 23-6 offsets, adjusting nut 23-6 is engaged with the cone tooth Z of cone tooth sliding sleeve 23-7, the endoporus of adjusting nut 23-6 is shaped with non-self-lock-ing screw thread, and be threaded with the screw mandrel 21-4 of resetting-mechanism 21,
Described Parking Brake Cylinders part comprises and is provided with the parking cylinder body 27, park piston 9, park adjusting nut 10, park spring 7 of the second suction port 27-1, guide finger 8, hand braking grip assembly and hand relieving device 28; Described one end of parking cylinder body 27 is fixedly connected with intermediate 6, parks piston 9 and is located at and parks in cylinder body 27 and be slidably matched with it, parks spring 7 and is against and parks between piston 9 and intermediate 6; Described guide finger 8 is located to park between piston 9 and intermediate 6 and parks piston 9 can only carry out straight line motion to retrain; Described hand braking grip assembly comprises hand braking cover 15, gear ring 14, ball assembly 17 and throw-out collar 18, a part of inwall of hand braking cover 15 and the center tube 6-1 periphery of intermediate 6 are slidably matched, another part inner wall sleeve is on the piston tube 2-2 of brake piston 2, and the outer wall of hand braking cover 15 has non-self-lock-ing screw thread; Described throw-out collar 18 is loosely enclosed within the piston tube 2-2 of brake piston 2, clips ball assembly 17 between throw-out collar 18 and hand braking cover 15; Described throw-out collar 18 offsets with piston tube lid 22-1; It is outer and be fixedly connected with hand braking cover 15 that described gear ring 14 is enclosed within hand braking cover 15; Described hand relieving device 28 is installed in be parked on cylinder body 27, and hand relieving device 28 has and draws pin 24 and draw pin 24 can be inserted in the teeth groove of gear ring 14;
Described park adjusting nut 10 be placed in park piston 9 center hole in, and by a conical surface R with park piston 9 and coordinate, and by non-self-lock-ing thread bush on hand braking cover 15; Park adjusting nut 10 also compressed and park Regulation spring 11, the other end parking Regulation spring 11 has compressed thrust-bearing 12, thrust-bearing 12 under the effect of parking Regulation spring 11 with park piston 9 and offset.
As shown in Figure 5, in adjusting nut composition 23, Regulation spring 23-3 one end offsets with cone tooth sliding sleeve 23-7, and the other end is offseted by adjusting nut bearing 23-4, back-up ring 23-5 and adjusting nut 23-6.
Resetting-mechanism 21 in the present invention also can adopt the resetting-mechanism of prior art.
As shown in Fig. 1,7, described in park on piston 9 jump ring 13 be installed, jump ring 13 is pressed on thrust-bearing 12.
As shown in Figure 1,2,3, 4, described gear ring 14 and hand braking cover 15 are fixed together by screw 16, or by interference fit or be fixedly connected by welding together.
As shown in Fig. 1,12, described hand relieving device 28 also comprises alleviation and draws key seat 25, flap 37, stay cord assembly 36, connection set 29 and spring 35, its medium pulling rope assembly 36 draws pin 24 by connection set 29 connection, drawing pin 24 to be inserted in alleviation with being slidably matched draws in the pin-and-hole 25-1 of key seat 25, flap 37 is fixed on alleviation and draws on key seat 25, spring 35 be enclosed within draw on pin 24 and one end with draw that the step on pin 24 offsets, the other end offsets with flap 37, alleviate to draw key seat 25 and park cylinder body 27 to be fixed together by resilient key 26; Described connection set 29 comprises lining 30, resilient pad 31, nut 32 and bolt 33, two linings 30 and is inserted in the stay cord hole at stay cord assembly 36 two ends respectively, bolt 33 through lining 30, draw the attachment hole of pin 24 after adopt resilient pad 31, nut 32 fixes.
As shown in figure 12, described hand relieving device 28 also comprises dirt-proof boot 34, one end of dirt-proof boot 34 be fixed on draw on pin 24, the other end is fixed on flap 37.
As shown in Figure 8, described resetting-mechanism 21 also comprises yoke 21-1, reduction nut 21-2 and Returnning spring 21-5, reduction nut 21-2 is fixedly connected with screw mandrel 21-4 by pin 21-3, yoke 21-1 is housed between screw mandrel 21-4 and reduction nut 21-2, yoke 21-1 and screw mandrel 21-4 is slidably matched, and having end-tooth K to be meshed, Returnning spring 21-5 is placed between reduction nut 21-2 and yoke 21-1, and under Returnning spring 21-5 effect, screw mandrel 21-4 and yoke 21-1 relies on end-tooth K to mesh together.
As Fig. 1, 6, shown in 8, the working principle of unit brake cylinder: when needing braking in rail traffic vehicles running, control system is to the first suction port 1-1 incoming pressure air of brake cylinder casing 1, promote brake piston 2 to left movement, be fixedly connected on tapered sleeve 22-5 on piston tube 2-2 in the lump to left movement by screw thread simultaneously, tapered sleeve 22-5 promotes guiding nut 22-4, due to the effect of conical surface M, guiding nut 22-4 is limited by tapered sleeve 22-5 and rotates, now yoke 21-1 can not be rotated by lever (the present invention is not shown) constraint, and the rotation of screw mandrel 21-4 is limited by end-tooth K, therefore guiding nut 22-4 can promote screw mandrel 21-4, screw mandrel 21-4 by end-tooth K power passed to yoke 21-1 to left movement and the one end promoting lever-type clamp mechanism (the present invention is not shown) open, and one end that brake plate support is housed is tightened up, the brake pad be arranged on brake plate support is pressed in closely on the brake disc rubbing surface run up, realize service brake.
Braking process during normal brake lining gap: control system is to the first suction port 1-1 incoming pressure air of brake cylinder casing 1, promote brake piston 2 to left movement, be fixedly connected on tapered sleeve 22-5 on piston tube 2-2 in the lump to left movement by screw thread simultaneously, tapered sleeve 22-5 promotes guiding nut 22-4, due to the effect of conical surface M, guiding nut 22-4 is limited by tapered sleeve 22-5 and rotates, now yoke 21-1 can not be rotated by lever constraint, and the rotation of screw mandrel 21-4 is limited by end-tooth K, therefore guiding nut 22-4 can promote screw mandrel 21-4, power is passed to yoke 21-1 to left movement by end-tooth K by screw mandrel 21-4, the motion that brake cylinder casing 1 is relative to the right under the acting in opposition of air pressure simultaneously, the both sides lever that yoke 21-1 and brake cylinder casing 1 promote brake rigging respectively clamps to brake disc, the adjusting nut be meanwhile connected with screw mandrel 21-4 by non-self-lock-ing screw thread is formed 23 due to the restriction of key 23-2 and can not rotate, therefore with screw mandrel 21-4 together to left movement, until key 23-2 is stopped by guide hole 6-2 one end of intermediate 6, two side bitting clamps that now yoke 21-1 and brake cylinder casing 1 promote brake rigging respectively just clamp brake disc.
As Fig. 1, 5, 6, shown in 8, braking process when brake lining gap is large: the gap between brake lining and brake disc increases because of wearing and tearing, during setting gap beyond unit brake cylinder, repeat above-mentioned braking process, to the first suction port 1-1 incoming pressure air of brake cylinder casing 1, promote brake piston 2 to left movement, the both sides lever promoting brake rigging when yoke 21-1 and brake cylinder casing 1 respectively clamps to brake disc, when eliminating a normal brake lining gap, the adjusting nut be threaded with screw mandrel 21-4 by the non-self-lock-ing screw thread key 23-2 formed on 23 just encounters the guide hole 6-2 left end of intermediate 6 left, from then on boring tooth sliding sleeve 23-7 can not to left movement, also can not rotate, now still there is gap between brake lining and brake disc, brake piston 2 continues under the influence of air pressure to left movement, by piston tube 2-2, tapered sleeve 22-5, guiding nut 22-4, screw mandrel 21-4, yoke 21-1 continues to promote foundation brake lever and clamps to brake disc, adjusting nut 23-6 is caused to throw off to during left movement with the cone tooth Z of cone tooth sliding sleeve 23-7 under the effect of screw mandrel 21-4, once cone tooth Z throws off, adjusting nut 23-6 turns round immediately under the effect of Regulation spring 23-3, move right simultaneously, therefore behind the gap of eliminating normal size, adjusting nut composition 23 namely can not to left movement together with screw mandrel 21-4, until brake lining clamping brake disc, screw mandrel 21-4 stops to left movement, cone tooth Z engages again, during alleviation, under the effect of control system, the first suction port 1-1 of brake cylinder casing 1 is vented, brake piston 2 moves right under the effect of release spring 3, piston tube 2-2 is driven also to move right, because guiding nut 22-4 is pressed on tapered sleeve 22-5 by guide springs 22-2, therefore brake piston 2, piston tube 2-2, guide springs 22-2, guiding nut 22-4, tapered sleeve 22-5, screw mandrel 21-4, yoke 21-1 etc. moves right together, meanwhile, adjusting nut composition 23 also moves right under screw mandrel 21-4 thrust to the right, when brake lining leave brake disc reach normal clearance time, key 23-2 motion to the right is just stopped by the guide hole 6-2 right-hand member of intermediate 6, adjusting nut composition 23 can not continue to move right, now adjusting nut 23-6 can not rotate and can not move right, screw mandrel 21-4 is caused not move right, whole resetting-mechanism 21 remains on normal clearance position, because now brake piston 2 does not reset completely, continue to move right by under the effect of release spring 3, drive piston tube 2-2, tapered sleeve 22-5 moves right, because screw mandrel 21-4 is motionless, guide springs 22-2 is compressed, conical surface M between guiding nut 22-4 and tapered sleeve 22-5 throws off, guiding nut 22-4 rotation with brake piston 2 under the effect of guide springs 22-2 immediately, piston tube 2-2, tapered sleeve 22-5 etc. moves right together, until brake piston 2 arrives release position.
The working principle of parking brake cylinder portion of the present invention is as follows:
Rail vehicle is in running, and control system is to the second suction port 27-1 incoming pressure air parking cylinder body 27, and park piston 9 compression and park spring 7 to energy accumulating state, whole Parking Brake Cylinders is in off working state.
As Fig. 2, 6, 7, shown in 8, when rail traffic vehicles needs parking brake, pressure air is discharged from the second suction port 27-1 parking cylinder body 27, park spring 7 promotion that releases energy and park piston 9 to left movement, park piston 9 to promote to park adjusting nut 10 toward left movement by conical surface R, be threaded by non-self-lock-ing with hand braking cover 15 owing to parking adjusting nut 10, therefore, park adjusting nut 10 and promote hand braking cover 15 toward left movement, because gear ring 14 and hand braking cover 15 are linked together by screw 16, so, hand braking cover 15 drives gear ring 14 to left movement, and gear ring 14 and hand braking cover 15 promote ball assembly 17 and throw-out collar 18 to left movement, throw-out collar 18 promotes brake piston 2 to left movement by piston tube lid 22-1, brake piston 2 drives the tapered sleeve 22-5 of fixed connection on piston tube 2-2 in the lump to left movement again, tapered sleeve 22-5 promotes guiding nut 22-4, due to the effect of conical surface M, guiding nut 22-4 is limited by tapered sleeve 22-5 and rotates, thus promote screw mandrel 21-4, screw mandrel 21-4 by end-tooth K power passed to yoke 21-1 to left movement and the one end promoting lever-type clamp mechanism open, and one end that brake plate support is housed is tightened up, the brake pad be arranged on brake plate support is pressed in closely on brake disc rubbing surface and produces braking force, realize parking brake.
Like this, the present invention both can realize service brake, also can realize parking brake.
When rail traffic vehicles needs to alleviate under parking brake state, then have two kinds of approach to realize, its working principle is as follows:
1), inflation is alleviated
As shown in Fig. 3,7,6, certain pressure air is filled with by the second suction port 27-1 parking cylinder body 27, promotion is parked piston 9 compression and is parked spring 7 and move right, be inserted in the teeth groove of gear ring 14 owing to drawing pin 24 always, gear ring 14 and hand braking cover 15 are again be fixed with one by screw 16, also do not move so gear ring 14 and hand braking cover 15 neither rotate; When parking piston 9 and moving right, jump ring 13 promotes thrust-bearing 12 and moves right, due to the effect of conical surface R, park adjusting nut 10 can not rotate, be threaded by non-self-lock-ing with hand braking cover 15 because parking adjusting nut 10 again, therefore park adjusting nut 10 neither to rotate and also do not move, at this moment move right along with parking piston 9, park Regulation spring 11 to be compressed, conical surface R throws off thereupon, at this moment park the pass that adjusting nut 10 is threaded because of non-self-lock-ing under the effect of parking Regulation spring 11 and tie up to rotation on hand braking cover 15, also move right.Parking adjusting nut 10 does not have power to be added on hand braking cover 15, now brake piston 2 moves right due to the effect of release spring 3, drive tapered sleeve 22-5 to move right, by guiding nut 22-4, power is passed to leading screw 21-4, drive whole resetting-mechanism part 21 to move right and realize alleviating; Simultaneously, piston tube lid 22-1 promotes throw-out collar 18 and ball assembly 17 and moves right, ball assembly 17 and then promote hand braking cover 15 and move right, and hand braking cover 15 drives gear ring 14 to move right, therefore whole Parking Brake Cylinders partial rcsponse, the state before returning to parking brake.
2), hand relieving
As Fig. 4, 6, shown in 7, in time there is no air pressure, pull pin 24, the rotation restriction of gear ring 14 is cancelled, because gear ring 14 eliminates rotation restriction, cause hand braking cover 15 can rotate under the effect of axial force, now brake piston 2 moves right under the effect of release spring 3 and the reaction force of clamp clamping brake disc, and by piston tube lid 22-1, alleviation masterpiece is to the right used on hand braking cover 15 by promotion throw-out collar 18 and ball assembly 17, hand braking cover 15 is moved right, under the effect of parking spring 7, park piston 9 accelerates hand braking cover 15 to left movement rotation simultaneously, arrive to left park cylinder body 27 until park piston 9, the active force parking spring 7 is applied to be parked on cylinder body 27, no longer be applied on hand braking cover 15 by parking adjusting nut 10, brake piston 2 is also got back to and is alleviated position under the effect of release spring 3, drive whole resetting-mechanism 21 to get back to release position and complete parking brake alleviation action.
Claims (6)
1. an energy-storage type park unit brake cylinder, comprise unit brake cylinder part and Parking Brake Cylinders part two-part, described unit brake cylinder part comprises brake cylinder (4), resetting-mechanism (21) and clearance adjustment mechanism, described brake cylinder (4) comprises the brake cylinder casing (1) being provided with the first suction port (1-1) and the brake piston (2) be arranged in brake cylinder casing (1), it is characterized in that:
Described brake piston (2) comprises the piston only (2-1) coordinated with brake cylinder casing (1) inwall and the piston tube (2-2) extended to side from piston only (2-1) middle part; One end of described brake cylinder casing (1) is fixedly connected with intermediate (6), is provided with release spring (3) between the piston only (2-1) of intermediate (6) and brake piston (2); Described intermediate (6) has center tube (6-1), and the periphery of the piston tube (2-2) of brake piston (2) and center tube (6-1) inwall of intermediate (6) are slidably matched, and end is stretched out outside center tube (6-1); Described resetting-mechanism (21) comprises screw mandrel (21-4); Described clearance adjustment mechanism comprises guiding nut composition (22) and adjusting nut composition (23), and is all threaded with the screw mandrel (21-4) of resetting-mechanism (21) by non-self-lock-ing screw thread;
Described guiding nut composition (22) comprises piston tube lid (22-1), guiding nut (22-4), guide springs (22-2), guiding nut bearing (22-3) and tapered sleeve (22-5), piston tube lid (22-1) is all connected with piston tube (2-2) inner hole thread with tapered sleeve (22-5), the conical surface (M) is had to coordinate between guiding nut (22-4) with tapered sleeve (22-5), guide springs (22-2) is placed between piston tube lid (22-1) and guiding nut bearing (22-3), guide springs (22-2) one end and piston tube lid (22-1) offset, the other end is offseted by guiding nut bearing (22-3) and guiding nut (22-4), under the effect of guide springs (22-2), the conical surface (M) that guiding nut bearing (22-3) promotes between guiding nut (22-4) with tapered sleeve (22-5) contacts, the endoporus of guiding nut (22-4) is shaped with non-self-lock-ing screw thread, and be threaded with the screw mandrel (21-4) of resetting-mechanism (21),
Described adjusting nut composition (23) comprises adjusting nut (23-6), cone tooth sliding sleeve (23-7), Regulation spring (23-3) and adjusting nut bearing (23-4), cone tooth sliding sleeve (23-7) periphery and piston tube (2-2) endoporus of adjusting nut composition (23) are slidably matched, cone tooth sliding sleeve (23-7) there is key (23-2) to be placed in the guide hole (2-3) of piston tube (2-2), key (23-2) is also inserted in the guide hole (6-2) of center tube (6-1) simultaneously, cone tooth sliding sleeve (23-7) is made to slide axially in piston tube (2-2) but can not rotate, all be shaped with between cone tooth sliding sleeve (23-7) and adjusting nut (23-6) and bore tooth (Z), Regulation spring (23-3) is placed between adjusting nut bearing (23-4) and cone tooth sliding sleeve (23-7), under the effect of Regulation spring (23-3), adjusting nut bearing (23-4) and adjusting nut (23-6) offset, adjusting nut (23-6) is engaged with the cone tooth (Z) of cone tooth sliding sleeve (23-7), the endoporus of adjusting nut (23-6) is shaped with non-self-lock-ing screw thread, and be threaded with the screw mandrel (21-4) of resetting-mechanism (21),
Described Parking Brake Cylinders part comprises and is provided with the parking cylinder body (27), park piston (9), park adjusting nut (10), park spring (7) of the second suction port (27-1), guide finger (8), hand braking grip assembly and hand relieving device (28); Described one end of parking cylinder body (27) is fixedly connected with intermediate (6), parks piston (9) and is located at and parks in cylinder body (27) and be slidably matched with it, parks spring (7) and is against and parks between piston (9) and intermediate (6); Described guide finger (8) is located to park between piston (9) and intermediate (6) and parks piston (9) can only carry out straight line motion to retrain; Described hand braking grip assembly comprises hand braking cover (15), gear ring (14), ball assembly (17) and throw-out collar (18), a part of inwall of hand braking cover (15) and center tube (6-1) periphery of intermediate (6) are slidably matched, another part inner wall sleeve is in the piston tube (2-2) of brake piston (2), and the outer wall of hand braking cover (15) has non-self-lock-ing screw thread; Described throw-out collar (18) is loosely enclosed within the piston tube (2-2) of brake piston (2), clips ball assembly (17) between throw-out collar (18) and hand braking cover (15); Described throw-out collar (18) and piston tube lid (22-1) offset; Described gear ring (14) is enclosed within hand braking cover (15) and be fixedly connected with hand braking cover (15) outward; Described hand relieving device (28) is installed in be parked on cylinder body (27), and hand relieving device (28) has and draws pin (24) and draw pin (24) can be inserted in the teeth groove of gear ring (14);
Described park adjusting nut (10) be placed in park piston (9) center hole in, and by a conical surface (R) with park piston (9) and coordinate, and pass through non-self-lock-ing thread bush on hand braking cover (15); Park adjusting nut (10) also compressed and park Regulation spring (11), the other end parking Regulation spring (11) has compressed thrust-bearing (12), thrust-bearing (12) under the effect of parking Regulation spring (11) with park piston (9) and offset.
2. energy-storage type park unit brake cylinder according to claim 1, is characterized in that: described in park on piston (9) jump ring (13) be installed, jump ring (13) is pressed on thrust-bearing (12).
3. energy-storage type park unit brake cylinder according to claim 1, is characterized in that: described gear ring (14) and hand braking cover (15) are fixed together by screw (16), or by interference fit or be fixedly connected by welding together.
4. energy-storage type park unit brake cylinder according to claim 1, it is characterized in that: described hand relieving device (28) also comprises alleviation and draws key seat (25), flap (37), stay cord assembly (36), connection set (29) and spring (35), its medium pulling rope assembly (36) draws pin (24) by connection set (29) connection, drawing pin (24) to be inserted in alleviation with being slidably matched draws in the pin-and-hole (25-1) of key seat (25), flap (37) is fixed on alleviation and draws on key seat (25), spring (35) be enclosed within draw pin (24) upper and one end with draw the step on pin (24) to offset, the other end and flap (37) offset, alleviate to draw key seat (25) and park cylinder body (27) and be fixed together by resilient key (26), described connection set (29) comprises lining (30), resilient pad (31), nut (32) and bolt (33), two linings (30) are inserted in the stay cord hole at stay cord assembly (36) two ends respectively, bolt (33) through lining (30), draw the attachment hole of pin (24) after adopt resilient pad (31), nut (32) fixing.
5. energy-storage type park unit brake cylinder according to claim 4, is characterized in that: described hand relieving device (28) also comprises dirt-proof boot (34), and one end of dirt-proof boot (34) is fixed on draws that pin (24) is upper, the other end is fixed on flap (37).
6. energy-storage type park unit brake cylinder according to claim 1, it is characterized in that: described resetting-mechanism (21) also comprises yoke (21-1), reduction nut (21-2) and Returnning spring (21-5), reduction nut (21-2) is fixedly connected with screw mandrel (21-4) by pin (21-3), yoke (21-1) is housed between screw mandrel (21-4) and reduction nut (21-2), yoke (21-1) and screw mandrel (21-4) are slidably matched, and have end-tooth (K) to be meshed, Returnning spring (21-5) is placed between reduction nut (21-2) and yoke (21-1), under Returnning spring (21-5) effect, screw mandrel (21-4) relies on end-tooth (K) to mesh together with yoke (21-1).
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| CN201210221712.7A CN103511517B (en) | 2012-06-30 | 2012-06-30 | Energy-storage type park unit brake cylinder |
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| CN201210221712.7A CN103511517B (en) | 2012-06-30 | 2012-06-30 | Energy-storage type park unit brake cylinder |
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| CN106763342A (en) * | 2016-12-26 | 2017-05-31 | 常州中车铁马科技实业有限公司 | Storing cycle cylinder |
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| CN103511517A (en) | 2014-01-15 |
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