CN104455113A - Railway locomotive vehicle braking clamp unit - Google Patents

Railway locomotive vehicle braking clamp unit Download PDF

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Publication number
CN104455113A
CN104455113A CN201410558651.2A CN201410558651A CN104455113A CN 104455113 A CN104455113 A CN 104455113A CN 201410558651 A CN201410558651 A CN 201410558651A CN 104455113 A CN104455113 A CN 104455113A
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China
Prior art keywords
brake
spring
casing
tong arm
eccentric shaft
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Granted
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CN201410558651.2A
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Chinese (zh)
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CN104455113B (en
Inventor
王震
宋传云
张方亮
黄建松
覃立伟
张昕
孔德鹏
孟庆荣
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Qingdao Sirui Technology Co., Ltd.
CRRC Qingdao Sifang Rolling Stock Research Institute Co Ltd
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QINGDAO SIRUI TECHNOLOGY Co Ltd
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Priority to CN201410558651.2A priority Critical patent/CN104455113B/en
Publication of CN104455113A publication Critical patent/CN104455113A/en
Application granted granted Critical
Publication of CN104455113B publication Critical patent/CN104455113B/en
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Abstract

The invention belongs to the field of railway locomotive vehicle braking technologies, and relates to a railway locomotive vehicle braking clamp unit. The clamp unit comprises a box body, a braking cylinder, a braking force multiplication mechanism, braking clamp arms, a buffering device and a brake lining gap adjustor, wherein the braking cylinder is fixedly connected with the box body, a reset taper spring is located between a cylinder cover of the braking cylinder and a diaphragm plate, an eccentric shaft and a connecting rod form an eccentric shaft type lever, the driving braking clamp arm is hinged to the eccentric shaft, the driven braking clamp arm is hinged to the box body, the force bearing end of a lever hook and the end of a connecting rod of the braking force multiplication mechanism are spaced with a certain distance, the force applying end of the lever hook is connected with a push rod, and the buffering device is located between the box body and the force bearing end of the lever hook. The transverse width of the braking clamp unit is small, the piston diameter and the multiplying power of the clamp arms are reduced, the requirement of a spring stopping braking cylinder for an energy accumulating spring is lowered, and the size of the railway locomotive vehicle braking clamp unit is reduced. The railway locomotive vehicle braking clamp unit is wide in application range, high in modularization degree and complete in function.

Description

Rail locomotive car brakeing nipper units
Technical field
The invention belongs to rail locomotive vehicle brake technology field, relate to a kind of rail locomotive car brakeing nipper units, is that one is installed on the rail locomotive bogie of car, is used for performing braking instruction, produces or eliminates brake pad pressure.
Background technique
Brake clamp unit is the vitals of rail locomotive vehicle, generally be applied to the rail locomotive vehicle that the higher railway locomotive of speed, city railway vehicle, common railway passenger vehicle, EMU etc. adopt disc braking, realize air damping and the parking brake of rail locomotive vehicle.
The installation form of current existing brake clamp unit mainly contains: distributing 3 lifting and link press span are installed, and often kind of installation form has respective distinctive agent structure, and its agent structure degree of modularity is not high in addition, and dismounting is inconvenient, and maintenance is complicated.
Existing brake clamp unit has common feature, and brake piston is parallel with brake plate support traffic direction, causes the horizontal width of brake clamp unit larger.Brake clamp unit main body structure containing inner structure for amplifying, in order to be issued to same brake pad pressure at same air pressure, not needing larger piston diameter or holder arms multiplying power, causing the length of the radial space of brake clamp unit main body and holder arms larger; In addition, then need to have the Parking Brake Cylinders of larger energy storage spring to reach same brake pad pressure, so current existing brake clamp unitary space volume is larger.
Chinese patent CN102109020 discloses a kind of disc type brake gripping mechanism for railway vehicles, brake rod mechanism, be made up of two brake rods be oppositely arranged and the suspension arm be located between described two brake rods, the two ends of described suspension arm be flexibly connected with the middle part of described two brake rods respectively to make described two brake rods in same plane with the two ends of described suspension arm for fulcrum; The middle part of described suspension arm is provided with for hanging the hanging end on engine truck; A pair brake plate support, is located at the inner side of described two brake rods respectively, and is positioned at the same of described suspension arm; Master cylinder is arranged on the opposite side of described suspension arm and is connected with described two brake rods.There is the shortcoming that brake piston is parallel with brake plate support traffic direction, need larger piston diameter or holder arms multiplying power in it.
Summary of the invention
The object of the invention is to overcome the shortcoming that prior art exists, design a kind of install applied widely, the degree of modularity is high, multiple functional, take up room rail locomotive car brakeing nipper units little.
To achieve these goals, the technical solution used in the present invention is: a kind of rail locomotive car brakeing nipper units, comprise casing, master cylinder, braking force enlarger, brake clip tong arm, damping device and brake lining slack adjuster, brake clip tong arm front end connects brake plate support;
Described master cylinder is fixedly connected with casing, the piston rod that master cylinder comprises lamina membranacea and is connected with lamina membranacea, and reset tower spring is fixed between master cylinder cylinder cap and lamina membranacea.
Described braking force enlarger comprises eccentric shaft and connecting rod, and connecting rod is fixedly connected with eccentric shaft, and eccentric shaft two ends are fixedly connected with casing, and eccentric shaft two ends and casing joint are provided with needle bearing; Eccentric shaft and connecting rod composition eccentric shaft type lever, the throw of eccentric of connecting rod and the ratio of eccentric shaft distance are the Amplification factor of braking force enlarger, connecting rod and brake cylinder piston rod hinged;
Described brake clip tong arm comprises initiatively brake clip tong arm and passive brake clip tong arm, initiatively brake clip tong arm and eccentric shaft hinged, passive brake clip tong arm and casing hinged.
Described damping device comprises damping spring and lever hook, lever hook is articulated with box house, the connecting rod end part interval certain distance of lever hook force side and braking force enlarger, lever hook force side is connected with push rod, and damping spring is between casing and lever hook force side; When needs backlash compensation, piston rod drives connecting rod motion, and connecting rod compressing lever hook force side, lever force side promotes push rod, and simultaneous buffering spring is compressed, and push rod acts on brake lining slack adjuster and completes backlash compensation.
Described brake lining slack adjuster is positioned at outside casing, brake lining slack adjuster comprises left box body and right case, left box body and passive brake clip tong arm pass through hinge, right case and initiatively brake clip tong arm are cut with scissors by bearing pin, be provided with unidirectional torsional spring type friction clutch in described left box body, friction mandrel and leading screw to be connected formation driving shaft by left-handed thread; Connecting tube is anchored on left box body, and friction torsion spring holds connecting tube and friction mandrel tightly, and described connecting tube is identical with the position external diameter that friction mandrel is held tightly by the torsion spring that rubs; Described driving shaft is provided with pivoted arm sleeve, arranges unilateral bearing between pivoted arm sleeve and friction mandrel, described unilateral bearing and pivoted arm sleeve are connected, and pivoted arm sleeve back is provided with Returnning spring, and it is hinged that pivoted arm sleeve and push rod pass through spherical pair; Wimble tooth-like clutch is provided with in described right case, hand adjustment nut is provided with limiting block, and it is secondary that limiting block and right case contact position arrange a pair cone tooth, and Compress Spring acts on right case and limiting block, hand adjustment nut engages with right case, and hand adjustment nut to be placed on outside leading screw and to be connected with threads of lead screw.
When having occurred situation or the trend of brake lining excesssive gap because of reasons such as abrasion, during braking, the promotion of pivoted arm sleeve drawn stem rotates counterclockwise, unilateral bearing and friction mandrel locking, compression reseting spring, driving shaft can force friction, and torsion spring is reverse opens, and drives the leading screw of driving shaft relative to hand adjustment nut rotation, thus brake lining slack adjuster is extended; During further alleviation, friction torsion spring holds friction mandrel tightly again, and Returnning spring extends and resets, and drive pivoted arm sleeve to rotate clockwise, unilateral bearing can freely rotate and return by Relative friction axle, does not drive other component to move.Whole process makes brake lining slack adjuster length increase, thus compensate for wide arc gap or the trend excessively that produce between brake disc and brake lining, ensure that brake disc and brake lining gap maintain within the scope of setting.
When needing replacing brake lining or other action need manually to change the gap between brake disc and brake lining, can rotate forward by instrument or reversion hand adjustment nut, overcome the active force of Compress Spring, right case internal clutch cone tooth is thrown off, make hand adjustment nut relative to screw turns, thus realize manual elongation or the shortening of brake lining slack adjuster.
Preferably, described rail locomotive car brakeing nipper units comprises spring Parking Brake Cylinders, what described spring Parking Brake Cylinders comprised output terminal parks wedge, parks wedge and is connected with spring parking brake cylinder piston rod, park spring and parking between piston and spring Parking Brake Cylinders cylinder body.
Preferably, be provided with power of parking between described spring Parking Brake Cylinders and described braking force enlarger and amplify transfer mechanism, power of parking is amplified transfer mechanism and is comprised rotating shaft and pivoted arm, pivoted arm is provided with internal spline, rotating shaft is provided with external splines, rotating shaft and pivoted arm are rotationally connected by spline pair, pivoted arm top is provided with the shifting block radially extended, the bumping post that shifting block is arranged downwards with connecting rod in braking force enlarger coordinates, horizontal lever is provided with bottom rotating shaft, lever stress bottom portion is provided with parks bearing, parks bearing and is connected with the wedge surface of parking of spring Parking Brake Cylinders output terminal.
Preferably, be provided with the anti-overlaying mechanism of braking force between described master cylinder and spring Parking Brake Cylinders, the anti-overlaying mechanism of described braking force is the connecting pipeline being provided with two-way valve, makes the higher gas of pressure lead to spring Parking Brake Cylinders all the time.
Preferably, described brake clamp unit adopts link press span installation form, and link press span is positioned at above casing, and casing and link press span pass through pinned connection.
Preferably, described brake clamp unit adopts 3 installation forms lifted, and the brake plate support of brake clip tong arm front end is provided with arm, and casing is provided with suspension centre.
Preferably, described brake clip tong arm front end is provided with mechanical limit structure, prevents the excessive deflection of brake plate support.
Beneficial effect of the present invention is:
Brake piston is vertical with brake plate support moving direction, and the horizontal width of brake clamp unit reduces; By adopting the braking force enlarger of eccentric shaft type lever, piston diameter and holder arms multiplying power is reduced under same air pressure, the radial space of brake clamp unit main body and holder arms length are reduced greatly, have employed and park force amplificatory structure, reduce the requirement of spring Parking Brake Cylinders to energy-storaging spring, greatly reduce the volume of rail locomotive car brakeing nipper units; Install applied widely, the degree of modularity is high, multiple functional.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structural representation;
Fig. 2 is embodiment 2 structural representation;
Fig. 3 is embodiment 3 structural representation;
Fig. 4 is embodiment 4 structural representation;
Fig. 5 is structural representation one of the present invention;
Fig. 6 is structural representation two of the present invention;
Fig. 7 is braking force enlarger of the present invention and parks force amplificatory structure structural representation;
Fig. 8 is brake lining slack adjuster structural representation;
Fig. 9 is brake lining slack adjuster right elevation;
Figure 10 is spring Parking Brake Cylinders structural representation.
As shown in figs 1-9: brake plate support 1, link press span 2, initiatively brake clip tong arm 3, brake lining slack adjuster 4, passive brake clip tong arm 5, spring Parking Brake Cylinders 6, arm 7, suspension centre 8, connecting rod 9, reset tower spring 10, the anti-overlaying mechanism 11 of braking force, casing 12, damping spring 13, master cylinder 14, push rod 15, piston rod 16, eccentric shaft 17, lever hook 18, pivoted arm 19, rotating shaft 20, park wedge 21, bumping post 22, shifting block 23, park bearing 24, lever 25, park spring 26, park piston 27, spring Parking Brake Cylinders cylinder body 28, hand adjustment nut 41, leading screw 42, friction torsion spring 43, connecting tube 44, friction mandrel 45, adjustment tower spring 46, pivoted arm sleeve 47, unilateral bearing 48.
Embodiment
Below by embodiment, the invention will be further described by reference to the accompanying drawings:
Embodiment 1
The rail locomotive car brakeing nipper units of the present embodiment, adopt link press span installation form, link press span 2 is provided with threaded mounting hole, and link press span 2 is positioned at above casing 12, and casing 12 and link press span 2 pass through pinned connection.
Rail locomotive car brakeing nipper units comprises casing 12, master cylinder 14, braking force enlarger, brake clip tong arm, damping device and brake lining slack adjuster 4, and brake clip tong arm front end connects brake plate support 1;
Master cylinder 14 is fixedly connected with casing 12, the piston rod 16 that master cylinder 14 comprises lamina membranacea and is connected with lamina membranacea, between the cylinder cap that reset tower spring 10 is fixed on master cylinder 14 and lamina membranacea, pressurized air promotes piston rod 16 by rubber diaphragm, realizes the conversion of air pressure to piston rod thrust.
Connecting rod 9 is fixedly connected with eccentric shaft 17, and as braking force enlarger, the two ends of eccentric shaft 17 are fixedly connected with casing 12, and eccentric shaft 17 two ends and casing 12 joint are provided with needle bearing; Eccentric shaft 17 and connecting rod 9 form eccentric shaft type lever, and the throw of eccentric of connecting rod 9 and the ratio of eccentric shaft distance are the Amplification factor of braking force enlarger, and connecting rod 9 is hinged with brake cylinder piston rod 16;
Brake clip tong arm comprises initiatively brake clip tong arm 3 and passive brake clip tong arm 5, and initiatively brake clip tong arm 3 is hinged with eccentric shaft 17, and passive brake clip tong arm 5 is hinged with casing 12, and initiatively brake clip tong arm 3 and passive brake clip tong arm 5 lay respectively at casing both sides.
Damping device comprises damping spring 13 and lever hook 18, it is inner that lever hook 18 is articulated with casing 12, the end part interval certain distance of the force side of lever hook 18 and the connecting rod 9 of braking force enlarger, the force side of lever hook 18 is connected with push rod 15, and damping spring 13 is between casing 12 and the force side of lever hook 18; When needs backlash compensation, piston rod 16 drives connecting rod 9 to move, and connecting rod 9 oppresses the force side of lever hook 18, and the force side of lever hook 18 promotes push rod 15, and simultaneous buffering spring 13 is compressed, and push rod 15 acts on brake lining slack adjuster 4 and completes backlash compensation.
Brake lining slack adjuster 4 is positioned at outside casing 12, brake lining slack adjuster 4 comprises left box body and right case, left box body and passive brake clip tong arm 5 pass through hinge, right case and initiatively brake clip tong arm 3 are cut with scissors by bearing pin, be provided with unidirectional torsional spring type friction clutch in described left box body, friction mandrel 45 and leading screw 42 to be connected formation driving shaft by left-handed thread; Connecting tube 44 is anchored on left box body, and friction torsion spring 43 holds connecting tube 44 and friction mandrel 45 tightly, and described connecting tube 44 is identical with the position external diameter that friction mandrel 45 is held tightly by the torsion spring 43 that rubs; Described driving shaft is provided with pivoted arm sleeve 47, unilateral bearing 48 is set between pivoted arm sleeve 47 and friction mandrel 45, described unilateral bearing 48 is connected with pivoted arm sleeve 47, and the back of pivoted arm sleeve 47 is provided with Returnning spring, and pivoted arm sleeve 47 is hinged by spherical pair with push rod 15; Wimble tooth-like clutch is provided with in described right case, hand adjustment nut 41 is provided with limiting block, it is secondary that limiting block and right case contact position arrange a pair cone tooth, Compress Spring acts on right case and limiting block, hand adjustment nut 41 engages with right case, and hand adjustment nut 41 to be placed on outside leading screw 42 and to be connected with threads of lead screw.
When having occurred situation or the trend of brake lining excesssive gap because of reasons such as abrasion, during braking, the promotion of pivoted arm sleeve 47 drawn stem 15 rotates counterclockwise, unilateral bearing 48 and friction mandrel 45 locking, compression reseting spring, driving shaft can force friction, and torsion spring 43 is reverse opens, and drives the leading screw 42 of driving shaft to rotate relative to hand adjustment nut 41, thus brake lining slack adjuster 4 is extended; During further alleviation, friction torsion spring 43 holds friction mandrel 45 again tightly, and Returnning spring extends and resets, and drive pivoted arm sleeve 47 to rotate clockwise, unilateral bearing 48 can freely rotate and return by Relative friction axle 45, does not drive other component to move.Whole process makes the length of brake lining slack adjuster 4 increase, thus compensate for wide arc gap or the trend excessively that produce between brake disc and brake lining, ensure that brake disc and brake lining gap maintain within the scope of setting.
When needing replacing brake lining or other action need manually to change the gap between brake disc and brake lining, can rotate forward by instrument or reversion hand adjustment nut 41, overcome the active force of Compress Spring, right case internal clutch cone tooth is thrown off, hand adjustment nut 41 is rotated relative to leading screw 42, thus realizes manual elongation or the shortening of brake lining slack adjuster 4.
Brake clip tong arm front end is provided with mechanical limit structure, prevents the excessive deflection of brake plate support.
Master cylinder normal brake application effect: in normal brake application process, brake lining slack adjuster 4 does not need adjustment, whole brake lining slack adjuster 4 is a rigid body, its braking process is: master cylinder 14 is filled with certain pressure air, lamina membranacea drives piston rod 16 to move outside master cylinder 14, compress reset tower spring 10 simultaneously, piston rod 16 promotes connecting rod 9 and moves, eccentric shaft 17 is driven to rotate around its big axis core, the active brake clip tong arm 3 to the inside translation hinged with eccentric shaft 17, initiatively brake clip tong arm 3 is connected by brake lining slack adjuster 4 with passive brake clip tong arm 5, passive brake clip tong arm 5 rotates around the bearing pin between passive brake clip tong arm 5 and casing 12, two brake plate supports 1 in left and right move to application position, nipper units is finally made to hold brake disc tightly, produce brake pad pressure.
Master cylinder mitigation: the pressurized air in master cylinder 14 is discharged, piston resets under the effect of reset tower spring 10, piston rod 16 drives connecting rod 9 to move, eccentric shaft 17 is driven to rotate around its big axis core, the active brake clip tong arm 3 laterally translation hinged with eccentric shaft 17, passive brake clip tong arm 5 rotates around the bearing pin between passive brake clip tong arm 5 and casing 12, and two, left and right brake plate support 1 moves to initial position, brake lining pressure is eliminated, and realizes the alleviation of brake clamp unit.
Embodiment 2
The rail locomotive car brakeing nipper units of the present embodiment is with spring Parking Brake Cylinders 6, and adopt link press span installation form, link press span 2 is provided with threaded mounting hole, and link press span 2 is positioned at above casing 12, and casing 12 and link press span 2 pass through pinned connection.
Rail locomotive car brakeing nipper units comprises casing 12, master cylinder 14, braking force enlarger, brake clip tong arm, damping device, brake lining slack adjuster 4 and spring Parking Brake Cylinders 6, and brake clip tong arm front end connects brake plate support 1;
Master cylinder 14 is fixedly connected with casing 12, the piston rod 16 that master cylinder 14 comprises lamina membranacea and is connected with lamina membranacea, between the cylinder cap that reset tower spring 10 is fixed on master cylinder 14 and lamina membranacea, pressurized air promotes piston rod 16 by rubber diaphragm, realizes the conversion of air pressure to piston rod thrust.
Connecting rod 9 is fixedly connected with eccentric shaft 17, and as braking force enlarger, the two ends of eccentric shaft 17 are fixedly connected with casing 12, and eccentric shaft 17 two ends and casing 12 joint are provided with needle bearing; Eccentric shaft 17 and connecting rod 9 form eccentric shaft type lever, and the throw of eccentric of connecting rod 9 and the ratio of eccentric shaft distance are the Amplification factor of braking force enlarger, and connecting rod 9 is hinged with brake cylinder piston rod 16;
Brake clip tong arm comprises initiatively brake clip tong arm 3 and passive brake clip tong arm 5, and initiatively brake clip tong arm 3 is hinged with eccentric shaft 17, and passive brake clip tong arm 5 is hinged with casing 12, and initiatively brake clip tong arm 3 and passive brake clip tong arm 5 lay respectively at casing both sides.
Damping device comprises damping spring 13 and lever hook 18, it is inner that lever hook 18 is articulated with casing 12, the end part interval certain distance of the force side of lever hook 18 and the connecting rod 9 of braking force enlarger, the force side of lever hook 18 is connected with push rod 15, and damping spring 13 is between casing 12 and the force side of lever hook 18; When needs backlash compensation, piston rod 16 drives connecting rod 9 to move, and connecting rod 9 oppresses the force side of lever hook 18, and the force side of lever hook 18 promotes push rod 15, and simultaneous buffering spring 13 is compressed, and push rod 15 acts on brake lining slack adjuster 4 and completes backlash compensation.
Brake lining slack adjuster 4 is positioned at outside casing 12, brake lining slack adjuster 4 comprises left box body and right case, left box body and passive brake clip tong arm 5 pass through hinge, right case and initiatively brake clip tong arm 3 are cut with scissors by bearing pin, be provided with unidirectional torsional spring type friction clutch in described left box body, friction mandrel 45 and leading screw 42 to be connected formation driving shaft by left-handed thread; Connecting tube 44 is anchored on left box body, and friction torsion spring 43 holds connecting tube 44 and friction mandrel 45 tightly, and described connecting tube 44 is identical with the position external diameter that friction mandrel 45 is held tightly by the torsion spring 43 that rubs; Described driving shaft is provided with pivoted arm sleeve 47, unilateral bearing 48 is set between pivoted arm sleeve 47 and friction mandrel 45, described unilateral bearing 48 is connected with pivoted arm sleeve 47, and the back of pivoted arm sleeve 47 is provided with Returnning spring, and pivoted arm sleeve 47 is hinged by spherical pair with push rod 15; Wimble tooth-like clutch is provided with in described right case, hand adjustment nut 41 is provided with limiting block, it is secondary that limiting block and right case contact position arrange a pair cone tooth, Compress Spring acts on right case and limiting block, hand adjustment nut 41 engages with right case, and hand adjustment nut 41 to be placed on outside leading screw 42 and to be connected with threads of lead screw.
When having occurred situation or the trend of brake lining excesssive gap because of reasons such as abrasion, during braking, the promotion of pivoted arm sleeve 47 drawn stem 15 rotates counterclockwise, unilateral bearing 48 and friction mandrel 45 locking, compression reseting spring, driving shaft can force friction, and torsion spring 43 is reverse opens, and drives the leading screw 42 of driving shaft to rotate relative to hand adjustment nut 41, thus brake lining slack adjuster 4 is extended; During further alleviation, friction torsion spring 43 holds friction mandrel 45 again tightly, and Returnning spring extends and resets, and drive pivoted arm sleeve 47 to rotate clockwise, unilateral bearing 48 can freely rotate and return by Relative friction axle 45, does not drive other component to move.Whole process makes the length of brake lining slack adjuster 4 increase, thus compensate for wide arc gap or the trend excessively that produce between brake disc and brake lining, ensure that brake disc and brake lining gap maintain within the scope of setting.
When needing replacing brake lining or other action need manually to change the gap between brake disc and brake lining, can rotate forward by instrument or reversion hand adjustment nut 41, overcome the active force of Compress Spring, right case internal clutch cone tooth is thrown off, hand adjustment nut 41 is rotated relative to leading screw 42, thus realizes manual elongation or the shortening of brake lining slack adjuster 4.
What spring Parking Brake Cylinders 6 comprised output terminal parks wedge 21, parks wedge 21 and is connected with spring parking brake cylinder piston rod, park spring 26 and parking between piston 27 and spring Parking Brake Cylinders cylinder body 28.
Be provided with power of parking between spring Parking Brake Cylinders 6 and braking force enlarger and amplify transfer mechanism, power of parking is amplified transfer mechanism and is comprised rotating shaft 20 and pivoted arm 19, pivoted arm 19 is provided with internal spline, rotating shaft 20 is provided with external splines, rotating shaft 20 and pivoted arm 19 are rotationally connected by spline pair, pivoted arm 19 top is provided with the shifting block 23 radially extended, the bumping post 22 that shifting block 23 is arranged downwards with connecting rod 9 in braking force enlarger coordinates, horizontal lever 25 is provided with bottom rotating shaft 20, be provided with bottom the force side of lever 25 and park bearing 24, park bearing 24 to be connected with the wedge 21 of parking of spring Parking Brake Cylinders 6 output terminal.
Be provided with the anti-overlaying mechanism of braking force between master cylinder 14 and spring Parking Brake Cylinders 6, the anti-overlaying mechanism of braking force is the connecting pipeline being provided with two-way valve, makes the higher gas of pressure lead to spring Parking Brake Cylinders 6 all the time.
Brake clip tong arm front end is provided with mechanical limit structure, prevents the excessive deflection of brake plate support.
Master cylinder normal brake application effect: in normal brake application process, brake lining slack adjuster 4 does not need adjustment, whole brake lining slack adjuster 4 is a rigid body, its braking process is: master cylinder 14 is filled with certain pressure air, lamina membranacea drives piston rod 16 to move outside master cylinder 14, compress reset tower spring 10 simultaneously, piston rod 16 promotes connecting rod 9 and moves, eccentric shaft 17 is driven to rotate around its big axis core, the active brake clip tong arm 3 to the inside translation hinged with eccentric shaft 17, initiatively brake clip tong arm 3 is connected by brake lining slack adjuster 4 with passive brake clip tong arm 5, passive brake clip tong arm 5 rotates around the bearing pin between passive brake clip tong arm 5 and casing 12, two brake plate supports 1 in left and right move to application position, nipper units is finally made to hold brake disc tightly, produce brake pad pressure.
Master cylinder mitigation: the pressurized air in master cylinder 14 is discharged, piston resets under the effect of reset tower spring 10, piston rod 16 drives connecting rod 9 to move, eccentric shaft 17 is driven to rotate around its big axis core, the active brake clip tong arm 3 laterally translation hinged with eccentric shaft 17, passive brake clip tong arm 5 rotates around the bearing pin between passive brake clip tong arm 5 and casing 12, and two, left and right brake plate support 1 moves to initial position, brake lining pressure is eliminated, and realizes the alleviation of brake clamp unit.
Spring Parking Brake Cylinders braking action: utilize the spring force that spring 26 discharges of parking in spring Parking Brake Cylinders 6 to complete braking, amplifies transfer mechanism by power of parking, connecting rod 9, eccentric shaft 17, brake lining slack adjuster 4, brake clip tong arm completes braking maneuver.Elementary process is: spring Parking Brake Cylinders 6 air draft, parks spring 26 and extends retracting spring power, promotes to park piston 27 and moves; The drive of spring parking brake cylinder piston rod is parked wedge 21 and is moved to the direction of spring elongates; Park wedge 21 to oppress and park bearing 24 bottom rotating shaft 20 horizontal lever 25 force side, the amplification of generation power and transmission effect, the shifting block 23 that internal spline pivoted arm 19 top radially extends stirs the bumping post 22 that connecting rod 9 is arranged downwards, connecting rod 9 is driven to move, subsequent motion is identical with master cylinder normal brake application, realizes parking brake.
Spring Parking Brake Cylinders inflation mitigation: when parking brake inflation is alleviated, the pressurized air of certain pressure intensity is filled in spring Parking Brake Cylinders 6, pressurized air promotes to park piston 27 compression and parks spring 26, promote to park wedge 21 by brake cylinder piston rod to move simultaneously, remove and park wedge 21 to the compressing of parking bearing 24, the amplification transfer mechanism parking power is in free state, the power acted on connecting rod 9 is removed, under the effect of reset tower spring 10, piston rod 16 drives connecting rod 9 to move, eccentric shaft 17 is driven to rotate around its big axis core, the active brake clip tong arm 3 laterally translation hinged with eccentric shaft 17, passive brake clip tong arm 5 rotates around the bearing pin between passive brake clip tong arm 5 and casing 12, two brake plate supports 1 in left and right move to initial position, brake lining pressure is eliminated, realize the alleviation of brake clamp unit.
Embodiment 3
The rail locomotive car brakeing nipper units of the present embodiment is with spring Parking Brake Cylinders 6, and adopt 3 installation forms lifted, the brake plate support 1 of brake clip tong arm front end is provided with arm 7, and casing 12 is provided with suspension centre 8.
Other are with embodiment 2.
Embodiment 4
The rail locomotive car brakeing nipper units of the present embodiment, adopt 3 installation forms lifted, the brake plate support 1 of brake clip tong arm front end is provided with arm 7, and casing is provided with suspension centre 8.
Other are with embodiment 1.

Claims (8)

1. a rail locomotive car brakeing nipper units, comprises casing (12), master cylinder (14) and brake clip tong arm, and brake clip tong arm front end connects brake plate support (1); Described master cylinder (14) is fixedly connected with casing (12), the piston rod (16) that master cylinder (14) comprises lamina membranacea and is connected with lamina membranacea, reset tower spring (10) is fixed between master cylinder cylinder cap and lamina membranacea;
It is characterized in that: described rail locomotive car brakeing nipper units, comprise braking force enlarger, damping device and brake lining slack adjuster (4);
Described braking force enlarger comprises eccentric shaft (17) and connecting rod (9), connecting rod (9) is fixedly connected with eccentric shaft (17), eccentric shaft (17) two ends are fixedly connected with casing (12), and eccentric shaft (17) two ends and casing (12) joint are provided with needle bearing; Eccentric shaft (17) and connecting rod (9) composition eccentric shaft type lever, the throw of eccentric of connecting rod (9) and the ratio of eccentric shaft distance are the Amplification factor of braking force enlarger, and connecting rod (9) is hinged with brake cylinder piston rod (16);
Described brake clip tong arm comprises initiatively brake clip tong arm (3) and passive brake clip tong arm (5), initiatively brake clip tong arm (3) is hinged with eccentric shaft (17), passive brake clip tong arm (5) is hinged with casing (12), and initiatively the connecting end of brake clip tong arm (3) and passive brake clip tong arm (5) end and brake lining slack adjuster (4) is hinged;
Described damping device comprises damping spring (13) and lever hook (18), it is inner that lever hook (18) is articulated with casing (12), connecting rod (9) the end part interval certain distance of lever hook (18) force side and braking force enlarger, lever hook (18) force side is connected with push rod (15), and damping spring (13) is positioned between casing (12) and lever hook (18) force side.
2. rail locomotive car brakeing nipper units according to claim 1, it is characterized in that: described brake lining slack adjuster (4) is positioned at casing (12) outside, brake lining slack adjuster (4) comprises left box body and right case, left box body and passive brake clip tong arm (5) pass through hinge, right case passes through hinge with active brake clip tong arm (3), be provided with unidirectional torsional spring type friction clutch in described left box body, friction mandrel (45) and leading screw (42) to be connected formation driving shaft by left-handed thread; Connecting tube (44) is anchored on left box body, connecting tube (44) and friction mandrel (45) are held in friction torsion spring (43) tightly, and described connecting tube (44) is identical with the position external diameter that friction mandrel (45) is held tightly by the torsion spring (43) that rubs; Described driving shaft is provided with pivoted arm sleeve (47), unilateral bearing (48) is set between pivoted arm sleeve (47) and friction mandrel (45), described unilateral bearing (48) and pivoted arm sleeve (47) are connected, pivoted arm sleeve (47) back is provided with Returnning spring, and pivoted arm sleeve (47) is hinged by spherical pair with push rod (15); Wimble tooth-like clutch is provided with in described right case, hand adjustment nut (41) is provided with limiting block, it is secondary that limiting block and right case contact position arrange a pair cone tooth, Compress Spring acts on right case and limiting block, hand adjustment nut (41) engages with right case, and hand adjustment nut (41) is placed on leading screw (42) outside and is threaded with leading screw (42).
3. rail locomotive car brakeing nipper units according to claim 1 and 2, it is characterized in that: described rail locomotive car brakeing nipper units comprises spring Parking Brake Cylinders (6), what described spring Parking Brake Cylinders (6) comprised output terminal parks wedge (21), park wedge (21) to be connected with spring parking brake cylinder piston rod, park spring (26) and be positioned at and park between piston (27) and spring Parking Brake Cylinders cylinder body (28).
4. rail locomotive car brakeing nipper units according to claim 3, it is characterized in that: be provided with power of parking between described spring Parking Brake Cylinders (6) and described braking force enlarger and amplify transfer mechanism, power of parking is amplified transfer mechanism and is comprised rotating shaft (20) and pivoted arm (19), pivoted arm (19) is provided with internal spline, rotating shaft (20) is provided with external splines, rotating shaft (20) and pivoted arm (19) are rotationally connected by spline pair, pivoted arm (19) top is provided with the shifting block (23) radially extended, the bumping post (22) that shifting block (23) is arranged downwards with connecting rod (9) in braking force enlarger coordinates, rotating shaft (20) bottom is provided with horizontal lever (25), be provided with bottom lever (25) force side and park bearing (24), park bearing (24) to be connected with wedge (21) face of parking of spring Parking Brake Cylinders (6) output terminal.
5. rail locomotive car brakeing nipper units according to claim 4, it is characterized in that: be provided with the anti-overlaying mechanism of braking force between described master cylinder (14) and spring Parking Brake Cylinders (6), the anti-overlaying mechanism of described braking force is the connecting pipeline being provided with two-way valve.
6. rail locomotive car brakeing nipper units according to claim 1, it is characterized in that: described brake clamp unit adopts link press span installation form, link press span (2) is positioned at casing (12) top, and casing (12) and link press span (2) pass through pinned connection.
7. rail locomotive car brakeing nipper units according to claim 1, it is characterized in that: described brake clamp unit adopts 3 installation forms lifted, the brake plate support (1) of brake clip tong arm front end is provided with arm (7), and casing (12) is provided with suspension centre (8).
8. rail locomotive car brakeing nipper units according to claim 1, is characterized in that: described brake clip tong arm front end is provided with mechanical limit structure, prevents brake plate support (1) excessive deflection.
CN201410558651.2A 2014-10-20 2014-10-20 Rail locomotive car braking nipper units Active CN104455113B (en)

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CN105134828A (en) * 2015-08-07 2015-12-09 青岛四方车辆研究所有限公司 Base of passive hydraulic brake clamp forceps
CN105351405A (en) * 2015-11-20 2016-02-24 常州南车铁马科技实业有限公司 Cylinder for braking clamp
CN106641042A (en) * 2016-12-15 2017-05-10 常州中车铁马科技实业有限公司 Brake clamp unit capable of recognizing lever deformation
CN107458416A (en) * 2017-08-10 2017-12-12 中车青岛四方车辆研究所有限公司 Hand braking gripping mechanism
CN108463645A (en) * 2015-11-05 2018-08-28 中车戚墅堰机车车辆工艺研究所有限公司 Lever mechanism and brake clamp device including it
WO2019129205A1 (en) * 2017-12-28 2019-07-04 比亚迪股份有限公司 Brake control system for urban rail train and urban rail train
CN111670136A (en) * 2018-02-05 2020-09-15 Zf主动安全有限公司 Method for producing a braking force device for a vehicle braking system, and such a braking force device
CN111976783A (en) * 2020-09-01 2020-11-24 中车株洲电力机车有限公司 Lever mechanism and brake clamp unit of railway vehicle
CN112141156A (en) * 2020-08-24 2020-12-29 汤金虎 Rail vehicle brake device of high-efficient braking
CN112855809A (en) * 2021-01-04 2021-05-28 中车青岛四方车辆研究所有限公司 Pneumatic brake cylinder and brake caliper unit
CN113183935A (en) * 2021-06-02 2021-07-30 中车青岛四方车辆研究所有限公司 Urban rail vehicle braking system and method based on deceleration closed-loop control
CN113830056A (en) * 2021-10-09 2021-12-24 中车青岛四方车辆研究所有限公司 Parking brake unit and electromechanical brake clamp

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WO2012086765A1 (en) * 2010-12-24 2012-06-28 曙ブレーキ工業株式会社 Disc brake apparatus for parking
CN202790244U (en) * 2012-09-07 2013-03-13 中国铁道科学研究院机车车辆研究所 Brake cylinder for braking clamp unit of railway vehicle

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CN105134828A (en) * 2015-08-07 2015-12-09 青岛四方车辆研究所有限公司 Base of passive hydraulic brake clamp forceps
CN108463645A (en) * 2015-11-05 2018-08-28 中车戚墅堰机车车辆工艺研究所有限公司 Lever mechanism and brake clamp device including it
CN108463645B (en) * 2015-11-05 2019-09-03 中车戚墅堰机车车辆工艺研究所有限公司 Lever mechanism and brake clamp device including it
CN105351405A (en) * 2015-11-20 2016-02-24 常州南车铁马科技实业有限公司 Cylinder for braking clamp
CN105351405B (en) * 2015-11-20 2017-09-22 常州中车铁马科技实业有限公司 Brake clamp oil cylinder
CN106641042B (en) * 2016-12-15 2018-12-25 常州中车铁马科技实业有限公司 A kind of brake clamp unit that can identify lever deformation
CN106641042A (en) * 2016-12-15 2017-05-10 常州中车铁马科技实业有限公司 Brake clamp unit capable of recognizing lever deformation
CN107458416A (en) * 2017-08-10 2017-12-12 中车青岛四方车辆研究所有限公司 Hand braking gripping mechanism
WO2019129205A1 (en) * 2017-12-28 2019-07-04 比亚迪股份有限公司 Brake control system for urban rail train and urban rail train
CN111670136A (en) * 2018-02-05 2020-09-15 Zf主动安全有限公司 Method for producing a braking force device for a vehicle braking system, and such a braking force device
CN112141156A (en) * 2020-08-24 2020-12-29 汤金虎 Rail vehicle brake device of high-efficient braking
CN111976783A (en) * 2020-09-01 2020-11-24 中车株洲电力机车有限公司 Lever mechanism and brake clamp unit of railway vehicle
CN112855809A (en) * 2021-01-04 2021-05-28 中车青岛四方车辆研究所有限公司 Pneumatic brake cylinder and brake caliper unit
CN113183935A (en) * 2021-06-02 2021-07-30 中车青岛四方车辆研究所有限公司 Urban rail vehicle braking system and method based on deceleration closed-loop control
CN113830056A (en) * 2021-10-09 2021-12-24 中车青岛四方车辆研究所有限公司 Parking brake unit and electromechanical brake clamp

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