WO2022040917A1 - Cylindre de frein unitaire et dispositif de frein intégré - Google Patents

Cylindre de frein unitaire et dispositif de frein intégré Download PDF

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Publication number
WO2022040917A1
WO2022040917A1 PCT/CN2020/111090 CN2020111090W WO2022040917A1 WO 2022040917 A1 WO2022040917 A1 WO 2022040917A1 CN 2020111090 W CN2020111090 W CN 2020111090W WO 2022040917 A1 WO2022040917 A1 WO 2022040917A1
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WO
WIPO (PCT)
Prior art keywords
piston
brake cylinder
unit brake
chamber
clutch
Prior art date
Application number
PCT/CN2020/111090
Other languages
English (en)
Chinese (zh)
Inventor
宁波
刘毅
肖维远
申燕飞
杨建平
毛富英
王开恩
罗军伟
李果
刘保华
肖八励
申检宏
肖晨
董奎
刘文军
Original Assignee
眉山中车制动科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 眉山中车制动科技股份有限公司 filed Critical 眉山中车制动科技股份有限公司
Priority to PCT/CN2020/111090 priority Critical patent/WO2022040917A1/fr
Priority to AU2020289774A priority patent/AU2020289774B2/en
Publication of WO2022040917A1 publication Critical patent/WO2022040917A1/fr

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Classifications

    • 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
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H15/00—Wear-compensating mechanisms, e.g. slack adjusters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut

Definitions

  • the present disclosure relates to the technical field of rail transit structures, and in particular, to a unit brake cylinder and an integrated brake device.
  • the unit brake cylinder is generally installed at the bottom of the vehicle.
  • the brake shoe is finally driven to press the wheel, thereby realizing the braking effect.
  • the present disclosure provides a unit brake cylinder to improve the deficiencies of the prior art, which can improve the working reliability of the unit brake cylinder and ensure the stability of the unit brake cylinder.
  • the present disclosure also provides an integrated braking device, which can improve the working reliability of the unit brake cylinder and ensure the stability of the unit brake cylinder.
  • Embodiments of the present disclosure provide a unit brake cylinder, which includes a cylinder block, a piston, a clutch assembly, and a brake shoe clearance adjuster; the piston is movably disposed in the cylinder block, and the piston is configured In order to divide the inner cavity of the cylinder into a first chamber and a second chamber isolated from each other, the cylinder has a ventilation part communicating with the first cavity, and the ventilation part is configured to be opposite to the said ventilation part.
  • the first chamber is ventilated;
  • the clutch assembly includes a positioning spring and a rear clutch, the piston is provided with a snap groove, the rear clutch is provided with a block, and the block is configured to be engaged with the snap groove to limit the circumferential movement of the rear clutch relative to the piston;
  • the positioning spring is located in the second chamber, and two ends of the positioning spring are respectively connected with the brake shoe clearance adjuster and the card block contact, the detent spring is configured to compress the catch against the piston to limit axial movement of the rear clutch relative to the piston.
  • the brake shoe clearance adjuster includes an adjustment nut, an adjustment spring, an adjustment spring seat, an adjustment screw and a connecting head, one end of the adjusting screw is connected with the connecting head, and the connecting head is connected with the rear clutch.
  • the adjusting nut is threadedly connected with the adjusting screw rod;
  • the adjusting spring is sleeved with the adjusting nut, and the two ends of the adjusting spring are respectively in contact with the adjusting nut and the adjusting spring seat, so as to press the adjustment spring seat against the clutch assembly;
  • a limit block is also provided on the adjustment screw, and the limit block and the clutch assembly are spaced apart so as to be between the limit block and the clutch assembly.
  • An adjustment gap is formed between the clutches, and one end of the positioning spring away from the locking block abuts against the limiting block.
  • the clutch assembly further includes a front clutch fixedly connected to the piston, the front clutch is located in the second chamber, and the connection is formed between the front clutch and the rear clutch for the connection
  • the connecting head is detachably connected with the front clutch and the rear clutch, respectively.
  • the end surface of the piston close to the second chamber is provided with a plurality of projections protruding along the axial direction of the piston, and the projections are arranged at intervals around the axial direction, and two adjacent projections are arranged.
  • the latching groove is formed between the protruding blocks; the latching block is clamped in the latching groove, and the latching block is in contact with the end face of the piston.
  • the protruding block includes a first protruding portion and a second protruding portion, the first protruding portion is fixedly connected to the piston, and the second protruding portion is fixedly connected to the first protruding portion one end of the rising portion away from the piston; the first protruding portion has a first end face away from the piston, the clamping block has a second end face away from the piston, the first end face and the second end face The end surface forms an abutting surface against which the positioning spring collides.
  • the unit brake cylinder further includes a front-end housing, the front-end housing is fixedly connected to the cylinder body to close the inner cavity of the cylinder body; the front-end housing is sleeved with the brake shoe Clearance adjuster.
  • the unit brake cylinder further includes a transmission rod, a manual brake lever and a connecting seat fixedly connected to the front end housing; the manual brake lever is rotatably connected to the connecting seat, and the One end of the transmission rod is fixedly connected with the piston, and the other end of the transmission rod extends out of the cylinder body and is connected with the manual brake lever in a driving manner, so as to drive the piston to move through the manual brake lever.
  • the front-end housing is provided with a plurality of indicator color rings, and the plurality of indicator color rings are arranged at intervals along the axial direction of the front-end housing; the end of the transmission rod extending out of the cylinder is provided.
  • the manual brake lever includes a first connecting arm and a second connecting arm, the first connecting arm is rotatably connected to the connecting seat through a first pin shaft, and the second connecting arm is connected to the connecting seat through a first pin.
  • the two pin shafts are rotatably connected with the connecting seat.
  • the first pin is screwed with the first connecting arm
  • the second pin is screwed with the second connecting arm
  • the thread rotation direction of the first pin is the same as that of the first pin.
  • the threads of the second pin have different directions of rotation.
  • the unit brake cylinder further includes a first elastic retaining ring and a second elastic retaining ring, the first elastic retaining ring is arranged on the side of the first pin shaft away from the connecting seat to prevent The first pin is disengaged from the connection seat; the second elastic retaining ring is disposed on the side of the second pin away from the connection seat to prevent the second pin from coming out of the connection seat.
  • the front-end housing is provided with a ventilation hole communicating with the second chamber, and the ventilation hole is configured to allow air to enter and exit the second chamber.
  • the unit brake cylinder further includes a breathing mask fixedly connected to the front end housing, the breathing mask is provided with a gas channel, and the gas channel communicates with the ventilation hole.
  • the gas channel includes a first channel and a second channel that communicate with each other, the first channel communicates with the vent hole, and the first channel is directed to the first channel along the second chamber
  • the direction of the chamber extends, the extension direction of the second channel is inclined relative to the first channel, and is directed along the direction of the second chamber to the first chamber, the first channel and the second The distance between channels is reduced.
  • Embodiments of the present disclosure also provide an integrated brake device including the above-mentioned unit brake cylinder.
  • the integrated braking device further includes a main brake beam, an auxiliary brake beam, a push rod and a rotating lever, the number of the rotating levers is two, and the two ends of the unit brake cylinder pass through two respectively.
  • Each of the rotating levers is movably connected to the main brake beam, and two ends of the push rod are respectively connected to the rotating lever and the auxiliary brake beam.
  • the push rod is telescopic.
  • the push rod includes a first screw rod, a second screw rod and an adjustment nut, and the adjustment nut is screwed with the first screw rod and the second screw rod at the same time, so as to adjust the first screw rod through the adjustment nut.
  • the distance between a screw and the second screw is the distance between a screw and the second screw.
  • the beneficial effects of the embodiments of the present disclosure include, for example:
  • Embodiments of the present disclosure provide a unit brake cylinder and an integrated brake device.
  • the unit brake cylinder includes a cylinder block, a piston, a clutch assembly and a brake shoe clearance adjuster.
  • a piston is movably disposed within the cylinder, and the piston is configured to divide the inner cavity of the cylinder into a first chamber and a second chamber which are isolated from each other.
  • the cylinder body has a vent portion communicating with the first chamber, so that the vent portion is ventilated to the first chamber to push the piston to move in the direction of compressing the second chamber.
  • the clutch assembly includes a positioning spring and a rear clutch.
  • the piston is provided with a snap groove
  • the rear clutch is provided with a snap block
  • the circumferential movement between the rear clutch and the piston is limited by the snap of the snap block and the snap slot.
  • the positioning spring is located in the second chamber, and the two ends of the positioning spring are respectively in contact with the brake shoe gap adjuster and the clamping block.
  • the positioning spring is configured to press the clamping block against the piston to limit the axial movement between the rear clutch and the piston. , which in turn fixes the rear clutch to the piston.
  • the limit of the rear clutch is realized through the cooperation of the clamping block and the snap groove, and the axial limit of the rear clutch and the piston is ensured by the pressing action of the positioning spring.
  • FIG. 1 is a schematic diagram of the overall structure of an integrated braking device provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of the overall structure of a unit brake cylinder provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic cross-sectional structural diagram of a unit brake cylinder provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a cylinder block in a unit brake cylinder provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a fitting structure of a piston in a unit brake cylinder and a rear clutch provided by an embodiment of the present disclosure
  • Fig. 6 is the partial structure enlarged schematic diagram at VI in Fig. 3;
  • Fig. 7 is a partial structure enlarged view at VII in Fig. 3;
  • FIG. 8 is a schematic structural diagram of a manual brake lever and a connecting seat in a unit brake cylinder according to an embodiment of the present disclosure
  • Fig. 9 is the partial structure enlarged schematic diagram at IX in Fig. 3;
  • FIG. 10 is a schematic structural diagram of a breathing mask in a unit brake cylinder provided by an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of a push rod in an integrated braking device provided by an embodiment of the present disclosure.
  • Icon 10-integrated braking device; 100-unit brake cylinder; 110-cylinder; 111-vent; 112-first chamber; 113-second chamber; 120-piston; 121-bump; 122 -1st convex part; 123-second convex part; 124-click groove; 130-clutch assembly; 131-rear clutch; 132-block; 133-front clutch; 134-positioning spring; 140-brake Tile clearance adjuster; 141-adjustment nut; 142-adjustment screw; 143-connector; 144-adjustment spring; 145-adjustment spring seat; 1451-seat body; 1452-support plate; 146-limit block; 147-adjustment Gap; 148-Abutting Protrusion; 150-Front End Housing; 151-First Housing Part; 152-Second Housing Part; 153-Limiting Step; 154-Indicating Color Ring; 155-Vent Hole; 161- Protective shell;
  • a fixed connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between two components.
  • a fixed connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between two components.
  • FIG. 1 is a schematic diagram of the overall structure of an integrated brake device 10 provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of the overall structure of a unit brake cylinder 100 provided by an embodiment of the present disclosure
  • FIG. 3 is provided by an embodiment of the present disclosure.
  • FIG. 4 is a schematic cross-sectional structural diagram of the unit brake cylinder 100
  • FIG. 4 is a schematic structural diagram of the cylinder block 110 in the unit brake cylinder 100 according to an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a unit brake cylinder 100 and an integrated brake device 10 .
  • the integrated brake device 10 includes a unit brake cylinder 100, and the integrated brake device 10 also includes a main brake beam 210, a secondary brake beam 220, a push rod 230 and a rotating lever 240.
  • the number of the push rods 230 and the rotating levers 240 is two
  • the two push rods 230 are the first push rod 231 and the second push rod 232 respectively
  • the two rotating levers 240 are the first rotating lever 241 and the second push rod 240 respectively.
  • the first rotating lever 241 is rotatably connected with the main brake beam 210 , the first push rod 231 and the unit brake cylinder 100 at the same time, and the end of the first push rod 231 away from the first rotating lever 241 is rotatably connected with the auxiliary brake beam 220 .
  • the second rotating lever 242 is rotatably connected with the main brake beam 210 , the second push rod 232 and the unit brake cylinder 100 at the same time, and the end of the second push rod 232 away from the second rotating lever 242 is rotatably connected with the auxiliary brake beam 220 . Therefore, the unit brake cylinder 100 is movably connected to the main brake beam 210 through the first rotating lever 241 and the second rotating lever 242 .
  • the unit brake cylinder 100 includes a cylinder block 110 , a piston 120 , a clutch assembly 130 and a brake shoe clearance adjuster 140 .
  • the piston 120 is movably disposed in the cylinder 110, and the piston 120 is configured to partition the inner cavity of the cylinder 110 into a first chamber 112 and a second chamber 113 which are isolated from each other.
  • the cylinder block 110 has a vent portion 111 communicating with the first chamber 112 , so that the first chamber 112 is ventilated through the vent portion 111 to push the piston 120 to move in the direction of compressing the second chamber 113 .
  • the clutch assembly 130 includes a positioning spring 134 and a rear clutch 131 , the piston 120 is provided with a snap groove 124 , and the rear clutch 131 is provided with a snap block 132 , and the rear clutch 131 is limited by the snap block 132 engaging with the snap slot 124 Circumferential movement with piston 120 .
  • the positioning spring 134 is located in the second chamber 113, and both ends of the positioning spring 134 are in contact with the brake shoe clearance adjuster 140 and the clamping block 132 respectively.
  • the positioning spring 134 is configured to press the clamping block 132 against the piston 120 to restrict the rear
  • the axial movement between the clutch 131 and the piston 120 further fixes the rear clutch 131 to the piston 120 .
  • the limit of the rear clutch 131 is realized by the cooperation of the clamping block 132 and the clamping groove 124 , and the axial limit of the rear clutch 131 and the piston 120 is ensured by the pressing action of the positioning spring 134 .
  • the method not only simplifies the structure and makes the installation more convenient and quick, but also avoids the influence of the loose bolts on the working reliability of the unit brake cylinder 100 during use, thereby helping to ensure the working reliability of the unit brake cylinder 100 .
  • the ventilation portion 111 is a through hole opened on the end surface of the cylinder block 110 .
  • the unit brake cylinder 100 provided in this embodiment will be further described below:
  • FIG. 5 is a schematic diagram of the cooperation structure of the piston 120 and the rear clutch 131 in the unit brake cylinder 100 according to the embodiment of the present disclosure.
  • a plurality of projections 121 protruding along the axial direction of the piston 120 are provided on the end surface of the piston 120 close to the second chamber 113 , and the plurality of projections 121 surround the piston 120 are arranged at intervals in the axial direction, so that a snap groove 124 is formed between two adjacent protrusions 121 .
  • the projections 121 are in the shape of a fan-shaped ring, so that the plurality of projections 121 are arranged at intervals around the axial direction of the piston 120 to form a space for installing the rear clutch 131 , the rear clutch 131 is arranged in the space, and the clips on the rear clutch 131
  • the block 132 protrudes outward along the radial direction of the rear clutch 131 to engage with the engaging groove 124 to realize the circumferential limit of the rear clutch 131 .
  • the end surface of the piston 120 close to the second chamber 113 is recessed inward in the axial direction to form a recess, and the protrusion 121 is disposed in the recess.
  • the protruding block 121 includes a first protruding portion 122 and a second protruding portion 123 , the first protruding portion 122 is fixedly connected to the piston 120 , and the second protruding portion 123 is fixedly connected to the first protruding portion 122 away from One end of the piston 120 and the end face of the first protruding portion 122 close to the second protruding portion 123 is the first end face. Since the radial dimension of the first protruding portion 122 is larger than the radial dimension of the second protruding portion 123 , the first end surface is located radially outside the second protruding portion 123 .
  • the end face of one end of the clamping block 132 away from the piston 120 is the second end face.
  • the clutch assembly 130 further includes a front clutch 133 , the front clutch 133 is fixedly connected to the piston 120 , and the front clutch 133 is located in the second chamber 113 .
  • the front clutch 133 and the rear clutch 131 are spaced apart, so that an accommodation cavity is formed between the front clutch 133 and the rear clutch 131 .
  • the front clutch 133 is fixedly connected to the end of the second protruding portion 123 away from the first protruding portion 122 by bolts. Since the projections 121 configured to fix the front clutch 133 are arranged in a fan ring shape, adjacent projections 121 are arranged at intervals, thereby helping to reduce the weight of the piston 120 .
  • the unit brake cylinder 100 further includes a return spring 182 disposed in the second chamber 113, and the return spring 182 abuts against the piston 120 to push the piston 120 to compress when the gas pressure in the first chamber 112 decreases. The direction of the first chamber 112 moves.
  • FIG. 6 is an enlarged schematic view of a partial structure at VI in FIG. 3 . 3 and FIG. 6 , in this embodiment, the brake shoe gap adjuster 140 includes an adjusting nut 141 , an adjusting spring 144 , an adjusting spring seat 145 , an adjusting screw 142 and a connecting head 143 .
  • the adjusting nut 141 has opposite first and second ends, the first end is located in the second chamber 113 , and the second end extends to the outside of the cylinder body 110 .
  • the connecting head 143 is fixedly connected to one end of the adjusting screw 142 , and the connecting head 143 extends into the accommodating cavity to be detachably connected with the front clutch 133 and the rear clutch 131 .
  • the front clutch 133 and the rear clutch 131 are respectively provided with bevel gears, and both ends of the connecting head 143 are respectively provided with bevel gears.
  • the head 143 is connected with the rear clutch 131.
  • the other end of the adjusting screw 142 extends away from the piston 120 along the axial direction of the piston 120 , and is screwed with the first end of the adjusting nut 141 .
  • the adjustment spring seat 145 is sleeved with the adjustment screw 142, and the adjustment spring seat 145 is located on the side of the adjustment nut 141 close to the piston 120, the adjustment spring 144 is sleeved with the adjustment nut 141, and the second end of the adjustment nut 141 is provided with abutting protrusions 148 , the two ends of the adjusting spring 144 are respectively abutted against the adjusting spring seat 145 and the abutting protrusion 148 .
  • the adjusting spring seat 145 is pressed against the front clutch 133 under the action of the adjusting spring 144, so that when the piston 120 moves in the direction of compressing the second chamber 113 relative to the cylinder 110, the adjusting spring seat 145 is pushed by the front clutch 133 and The adjusting nut 141 moves away from the piston 120 at the same time.
  • a limit block 146 is also provided on the adjustment screw 142 , and the limit block 146 is spaced from the clutch assembly 130 to form an adjustment gap 147 between the limit block 146 and the clutch assembly 130 .
  • One end of the positioning spring 134 away from the locking block 132 abuts against the limiting block 146 .
  • the limit block 146 is spaced apart from the front clutch 133 , so that an adjustment gap 147 is formed between the limit block 146 and the front clutch 133
  • the adjustment spring seat 145 includes a seat body 1451 and a support plate 1452 fixedly connected to the seat body 1451
  • the limiting block 146 is arranged between the seat body 1451 and the front clutch 133 , and the support plate 1452 extends through the through hole or slot on the limiting block 146 to the front clutch 133 and abuts against the front clutch 133 .
  • the limiting block 146 is connected with the adjusting screw 142 through a bearing.
  • the adjusting screw 142 is provided with a first retaining ring, and the first retaining ring is in conflict with the inner ring of the bearing to limit the axial position of the bearing relative to the adjusting screw 142 .
  • the limiting block 146 is provided with a second retaining ring, and the second retaining ring collides with the outer ring of the bearing to limit the axial position of the bearing relative to the limiting block 146 .
  • the limiting block 146 can rotate relative to the adjusting screw 142 , while the axial movement of the limiting block 146 relative to the adjusting screw 142 is limited.
  • FIG. 7 is an enlarged view of a part of the structure at VII in FIG. 3 .
  • the unit brake cylinder 100 further includes a front-end housing 150 , and the front-end housing 150 is fixedly connected to the cylinder block 110 to close the inner cavity of the cylinder block 110 , And the front end housing 150 is sleeved with a brake shoe gap adjuster 140 .
  • a sealing ring is provided between the inner peripheral wall of the cylinder block 110 and the outer peripheral wall of the front end housing 150 to ensure the sealing of the second chamber 113 .
  • the front end housing 150 includes a first housing part 151 and a second housing part 152 that are connected to each other, and the first housing part 151 is fixedly connected to the cylinder block 110 to form a cylindrical inner part in the cylinder block 110 .
  • the inner cavity is divided into a cylindrical first chamber 112 and a second chamber 113 by the piston 120, the first chamber 112 is located on the side of the piston 120 away from the first housing part 151, and the second chamber 113 It is located on the side of the piston 120 close to the first housing part 151 .
  • the second housing portion 152 is fixedly connected to the end of the first housing portion 151 away from the cylinder block 110 , and the end of the second housing portion 152 away from the first housing portion 151 is slidably engaged with the adjusting nut 141 .
  • the unit brake cylinder 100 further includes a protective shell 161 sleeved with the adjustment spring 144 , one end of the protective shell 161 extends to the second chamber 113 , and the other end of the protective shell 161 is connected with the abutment protrusion 148 , and at the same time protects the
  • the shell 161 is slidably fitted with the second housing portion 152 corresponding to the portion located in the second housing portion 152 .
  • the protective shell 161 is screwed with the contact protrusion 148
  • the contact protrusion 148 is screwed with the adjustment nut 141 .
  • the unit brake cylinder 100 further includes a limit sleeve 162 fixedly connected to the front end housing 150 , the limit sleeve 162 is sleeved with a protective shell 161 , and one end of the limit sleeve 162 extends into the first chamber 112 to It is configured to limit the axial position of the limit block 146 when the limit sleeve 162 collides with the limit block 146 .
  • the limiting sleeve 162 is connected to the first housing portion 151 .
  • the unit brake cylinder 100 further includes a limit spring 163 .
  • the first housing part 151 is provided with a limiting step 153 , and both ends of the limiting spring 163 abut against the limiting step 153 and the limiting sleeve 162 respectively.
  • FIG. 8 is a schematic structural diagram of the manual brake lever 171 and the connection seat 178 in the unit brake cylinder 100 according to the embodiment of the present disclosure.
  • the unit brake cylinder 100 further includes a transmission rod 179 , a manual brake lever 171 and a connecting seat 178 fixedly connected to the front end housing 150 .
  • One end of the transmission rod 179 extends into the second chamber 113 through the front end housing 150 and is fixedly connected with the piston 120
  • the other end of the transmission rod 179 extends out of the cylinder block 110 and is drivingly connected with the manual brake lever 171 .
  • the manual brake lever 171 is rotatably connected to the connection seat 178. When in use, the manual brake lever 171 is rotated relative to the connection seat 178 by operating the manual brake lever 171 to drive the transmission rod 179 to move along the axial direction of the piston 120, thereby driving the piston 120 relative to the cylinder. 110 moves.
  • the unit brake cylinder 100 further includes a connecting rod 181 disposed between the transmission rod 179 and the manual brake lever 171, and both ends of the connecting rod 181 are rotatably connected to the transmission rod 179 and the manual brake lever 171 respectively, This converts the rotational movement of the manual brake lever 171 into a linear slide of the transmission rod 179 .
  • the manual brake lever 171 includes a first connecting arm 172 and a second connecting arm 173 , the first connecting arm 172 is rotatably connected to the connecting seat 178 through the first pin 174 , and the second connecting arm 173 passes through the second connecting arm 173 .
  • the pin shaft 175 is rotatably connected with the connecting seat 178 .
  • connection base 178 has a first support arm configured to be rotatably connected to the first connection arm 172 and a second support arm configured to be rotatably connected to the second connection arm 173 , and the first pin 174 is connected to the first connection arm 172 and inserted into the first support arm to be rotatably connected to the first support arm, the second pin 175 is connected to the second connecting arm 173 and inserted into the second support arm to be rotatably connected to the second support arm.
  • the first pin 174 is screwed with the first connecting arm 172
  • the second pin 175 is screwed with the second connecting arm 173.
  • the first pin 174 is provided with a first threaded portion
  • the second The pin shaft 175 is provided with a second threaded part, and the rotation direction of the first threaded part is opposite to the rotation direction of the second threaded part, so the operation direction when unscrewing the first pin shaft 174 and the second pin shaft 175 should also be opposite.
  • the rotations of the first connecting arm 172 and the second connecting arm 173 are synchronous and in the same direction, so when the manual brake lever 171 is rotated, the first pin 174 and the second pin 175 can be effectively prevented from being disconnected from the connection Block 178.
  • the unit brake cylinder 100 further includes a first elastic retaining ring 176 and a second elastic retaining ring 177 .
  • the first elastic retaining ring 176 is disposed on the side of the first pin 174 away from the connecting seat 178 to prevent the first elastic retaining ring 176
  • the pin 174 is disengaged from the connecting seat 178
  • the second elastic retaining ring 177 is disposed on the side of the second pin 175 away from the connecting seat 178 to prevent the second pin 175 from coming out of the connecting seat 178, thereby improving the work of the unit brake cylinder 100 reliability.
  • a plurality of indicator color rings 154 are provided on the front end housing 150 , and the plurality of indicator color rings 154 are arranged at intervals along the axial direction of the front end housing 150 , and the transmission lever extends out of the cylinder 110 .
  • One end is provided with a comparison ring 1791 , and the stroke position of the piston 120 is determined by the corresponding relationship between the comparison ring 1791 and the indicator color ring 154 .
  • the indicator color ring 154 is arranged on the first housing part 151 , the first housing part 151 is arranged coaxially with the cylinder body 110 , and the piston 120 is arranged coaxially with the cylinder body 110 , that is, the axial direction of the front end housing 150 That is, the axial direction of the cylinder 110 is also the axial direction of the piston 120 .
  • the colors of the plurality of indicator color rings 154 are all different, so that the stroke position of the piston 120 can be determined more conveniently according to the corresponding relationship between the indicator color rings 154 and the comparison ring 1791 .
  • FIG. 9 is an enlarged schematic view of the partial structure at IX in FIG. 3
  • FIG. 10 is a schematic view of the structure of the breathing hood 190 in the unit brake cylinder 100 provided by the embodiment of the present disclosure.
  • the front end housing 150 is provided with a vent hole 155 communicating with the second chamber 113
  • the vent hole 155 is configured to allow air to enter and exit the second chamber 113 . chamber 113 .
  • the unit brake cylinder 100 further includes a breathing mask 190 that is fixedly connected to the front end housing 150.
  • the breathing mask 190 is provided with a gas channel 191, and the gas channel 191 communicates with the ventilation hole 155, so that the ventilation hole 155 passes through the gas channel. 191 communicates with the outside world.
  • the ventilation hole 155 is opened in the lower part of the front end housing 150 , and correspondingly, the breathing mask 190 is installed on the lower end of the front end housing 150 .
  • the gas channel 191 includes a first channel 192 and a second channel 193 that are connected to each other, the first channel 192 communicates with the vent hole 155 , and the first channel 192 extends in a direction from the second chamber 113 to the first chamber 112 .
  • the extending direction of the second channel 193 is inclined relative to the first channel 192, and along the direction in which the second chamber 113 points to the first chamber 112, the distance between the second channel 193 and the first channel 192 decreases, that is, the second channel 193 is provided in the shape of a slope, so that impurities such as dust accumulated in the gas passage 191 are automatically removed when the unit brake cylinder 100 is braked.
  • the working principle of the unit brake cylinder 100 is the working principle of the unit brake cylinder 100:
  • the compressed air from the distribution valve enters the first chamber 112 through the ventilation part 111, so as to push the piston 120 to move in the direction of compressing the second chamber 113 under the action of the pressure of the compressed air, thereby pushing
  • the adjusting nut 141 moves in the same direction until the limit block 146 collides with the limit sleeve 162, then the piston 120 continues to move in the direction of compressing the second chamber 113 under the pressure of the compressed air, the adjustment gap 147 decreases, and the connecting head 143 Disengaged from the front clutch 133 until the brake shoe contacts the wheel, the connecting head 143 is disengaged from the rear clutch 131 and applies the braking force to the wheel through the brake shoe.
  • the transmission rod 179 moves in the direction extending out of the second chamber 113 .
  • the correspondence between the comparison ring 1791 on the transmission rod 179 and the indicator color ring 154 on the first housing part 151 can be observed.
  • the relationship determines the stroke position of the piston 120 .
  • the second chamber 113 is compressed, the gas in the second chamber 113 is discharged through the gas channel 191, and impurities such as dust accumulated in the gas channel 191 are discharged with the gas to realize automatic cleaning.
  • the connecting head 143 moves to separate from the front clutch 133, the brake shoe does not contact the wheel, and the connecting head 143 is in the intermediate state of disengaging from the front clutch 133 and the rear clutch 131 at the same time.
  • the adjusting screw 142 rotates, but does not move relative to the cylinder 110 in the axial direction, thereby driving the adjusting nut 141 to rotate relative to the adjusting screw 142, thereby forming a screw mechanism, and the adjusting nut 141 relative to the adjusting screw 142 Moving away from the piston 120 until the brake shoe contacts the wheel and applies braking force to the wheel, the connector 143 is engaged with the rear clutch 131 .
  • the unit brake cylinder 100 and the integrated brake device 10 provided by this embodiment at least have the following advantages:
  • the unit brake cylinder 100 provided by the embodiment of the present disclosure realizes the limit of the rear clutch 131 through the cooperation of the clamping block 132 and the clamping groove 124 , and ensures the connection between the rear clutch 131 and the piston 120 through the pressing action of the positioning spring 134 .
  • the axial limit not only simplifies the structure and makes the installation more convenient and quick, but also avoids the influence on the working reliability of the unit brake cylinder 100 due to the loosening of the bolts during use. It helps to ensure the working reliability of the unit brake cylinder 100 .
  • the rotation connection between the manual brake lever 171 and the connecting seat 178 is realized by two independent short pins, which helps to simplify the structure.
  • the integrated brake device 10 provided by the embodiment of the present disclosure includes the above-mentioned unit brake cylinder 100 , which has all the functions of the unit brake cylinder 100 .
  • FIG. 11 is a schematic structural diagram of the push rod 230 in the integrated braking device 10 according to the embodiment of the present disclosure. Please refer to FIG. 1 and FIG. 11 , the present embodiment also provides an integrated braking device 10 .
  • the integrated braking device 10 includes a unit brake cylinder 100 , a main brake beam 210 , an auxiliary brake beam 220 , and a push rod 230 . And the rotating lever 240.
  • the number of the rotating levers 240 is two, the two rotating levers 240 are respectively rotatably connected with the main brake beam 210 , and the two ends of the unit brake cylinder 100 are respectively rotatably connected with the two rotating levers 240 so as to pass the two rotating levers 240
  • the active connection between the unit brake cylinder 100 and the main brake beam 210 is realized.
  • the number of the push rods 230 is set to two, the two push rods 230 are respectively rotatably connected to the two rotating levers 240, and the ends of the two push rods 230 away from the rotating lever 240 can be rotatably connected to the auxiliary system Moving beam 220.
  • the push rod 230 of the integrated brake device 10 is set to a retractable structure, so that in the case of serious wear of the brake shoe and the wheel, the length of the push rod 230 can be adjusted to complement the brake shoe clearance adjuster 140 on the unit brake cylinder 100 , in order to achieve greater compensation for brake shoe wear and at the same time make the structure of the entire integrated brake device 10 more stable.
  • the length of the push rod 230 can be manually adjusted to make the brake shoe separate from the wheel tread.
  • the push rod 230 includes a first screw 233 , a second screw 234 and an adjusting nut 235 .
  • the first screw 233 and the second screw 234 are rotatably connected with the rotating lever 240 and the auxiliary brake beam 220 respectively.
  • the first screw 233 and the second screw 234 are screwed with the adjusting nut 235 at the same time, so that the adjusting nut 235 is rotated to drive the
  • the first screw 233 and the second screw 234 are close to or away from each other, so as to adjust the distance between the first screw 233 and the second screw 234 , thereby realizing the adjustment of the length of the push rod 230 .
  • the present disclosure provides a unit brake cylinder and an integrated brake device, which can simplify the structure, make the installation more convenient and quick, and avoid the influence of the loose bolts on the working reliability of the unit brake cylinder during use. , thereby helping to ensure the working reliability of the unit brake cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

Cylindre de frein unitaire (100) comprenant un bloc-cylindres (110), un piston (120), un ensemble embrayage (130) et un dispositif de réglage de jeu de segment de frein (140). Le piston (120) est agencé de façon mobile dans le bloc-cylindres (110), et le piston (120) est configuré pour diviser une cavité interne du bloc-cylindres (110) en une première cavité (112) et une seconde cavité (113) qui sont séparées l'une de l'autre ; l'ensemble embrayage (140) comprend un ressort de positionnement (134) et un embrayage arrière (131), une fente de mise en prise (124) est formée sur le piston (120), un bloc de mise en prise (132) est agencé sur l'embrayage arrière (131), et un mouvement circonférentiel entre l'embrayage arrière (131) et le piston (120) est limité au moyen d'une mise en prise entre le bloc de mise en prise (132) et la fente de mise en prise (124) ; le ressort de positionnement (134) est situé dans la seconde cavité (113), et le ressort de positionnement (134) est configuré pour presser étroitement le bloc de mise en prise (132) contre le piston (120) pour limiter un mouvement axial entre l'embrayage arrière (131) et le piston (120) de manière à fixer l'embrayage arrière (131) au piston (120). Selon le cylindre de frein unitaire (100), la structure est simplifiée pour rendre l'installation plus pratique et plus rapide. L'invention concerne également un dispositif de frein intégré (10) présentant le cylindre de frein unitaire (100).
PCT/CN2020/111090 2020-08-25 2020-08-25 Cylindre de frein unitaire et dispositif de frein intégré WO2022040917A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/111090 WO2022040917A1 (fr) 2020-08-25 2020-08-25 Cylindre de frein unitaire et dispositif de frein intégré
AU2020289774A AU2020289774B2 (en) 2020-08-25 2020-08-25 Unit brake cylinder and integrated brake device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/111090 WO2022040917A1 (fr) 2020-08-25 2020-08-25 Cylindre de frein unitaire et dispositif de frein intégré

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CN116065314A (zh) * 2023-03-11 2023-05-05 浙江灏宇科技有限公司 布料印染辅助调压均染装置

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CN103717935A (zh) * 2011-07-26 2014-04-09 纳博特斯克有限公司 单元制动器
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CN114962496B (zh) * 2022-05-24 2023-06-27 徐州工业职业技术学院 一种摩擦装置
CN116065314A (zh) * 2023-03-11 2023-05-05 浙江灏宇科技有限公司 布料印染辅助调压均染装置
CN116065314B (zh) * 2023-03-11 2024-05-14 浙江灏宇科技有限公司 布料印染辅助调压均染装置

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