CN112156396A - Electric air brake capable of being quickly closed - Google Patents

Electric air brake capable of being quickly closed Download PDF

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Publication number
CN112156396A
CN112156396A CN202011163921.1A CN202011163921A CN112156396A CN 112156396 A CN112156396 A CN 112156396A CN 202011163921 A CN202011163921 A CN 202011163921A CN 112156396 A CN112156396 A CN 112156396A
Authority
CN
China
Prior art keywords
trigger
unhooking
electric
linkage
electric actuator
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202011163921.1A
Other languages
Chinese (zh)
Inventor
周少全
周小兰
张永祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taizhou Duruibao Marine Equipment Co Ltd
Original Assignee
Taizhou Duruibao Marine Equipment Co Ltd
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 Taizhou Duruibao Marine Equipment Co Ltd filed Critical Taizhou Duruibao Marine Equipment Co Ltd
Priority to CN202011163921.1A priority Critical patent/CN112156396A/en
Publication of CN112156396A publication Critical patent/CN112156396A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/24—Operating or controlling mechanisms
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/042—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

The invention discloses an electric air brake capable of being quickly closed, which comprises a frame, wherein a plurality of turnable blades are arranged in the frame, and an electric actuator, an electric junction box, a stress spring assembly, a transmission shaft locking unhooking assembly and an unhooking trigger device are arranged on the frame. When the electric actuator is electrified, the blade is opened by anticlockwise rotation to be limited and stopped, the opening state of the blade is kept, when a fire occurs, the fuse acts to cut off the power supply of the electric actuator, and at the moment, the reset state of the electric actuator starts to rotate clockwise. After the blade is rotated by a small angle, the blade reaches the trigger position of the transmission shaft locking and unhooking device to form trigger, the transmission shaft locking and unhooking device is triggered to be in an unhooking state, at the moment, the unhooking trigger device is divided into two parts, the upper part is freely and slowly reset clockwise along with the rotation of the electric actuator, the lower part shaft is acted by the stress application spring assembly, and the blade can be quickly and clockwise closed through the transmission mechanism.

Description

Electric air brake capable of being quickly closed
Technical Field
The invention relates to an air brake, in particular to an electric air brake capable of being quickly closed.
Background
When the existing air brake is in a fire condition, the electric actuator needs a long time to rotate to close the blades, and the safety and the reliability of the air brake are seriously influenced.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides the electric air brake capable of being quickly closed.
The technical problem of the invention is mainly solved by the following technical scheme:
the electric air brake capable of being quickly closed is characterized by comprising a frame, a plurality of reversible blades are arranged in the frame, an electric actuator and an electric junction box are arranged on the frame, a force application spring assembly, a transmission shaft locking unhooking assembly and an unhooking trigger device are further arranged on the frame, the electric actuator drives the unhooking trigger device,
wherein the content of the first and second substances,
the transmission shaft locking and unhooking assembly is positioned between a locking position and a triggering position, when the transmission shaft locking and unhooking assembly is positioned at the locking position, the blade is kept in a closed state, and when the transmission shaft locking and unhooking assembly is positioned at the triggering position, the force application spring assembly drives the blade and enables the blade to be closed rapidly.
As a preferred embodiment of the present invention, the electric damper capable of being rapidly closed comprises a frame, a plurality of reversible blades are arranged in the frame, a control housing is arranged at the top of the frame, an electric actuator and an electric junction box are arranged at the top of the control housing, an elongated linkage bar is arranged inside the control housing, a plurality of rotatable linkage pull rods are arranged on the linkage bar, the linkage pull rods are connected with the corresponding blades, each linkage pull rod comprises an elongated pull rod main body, an annular pull rod gear ring is arranged at the tail of each pull rod main body,
the control shell is internally provided with a stress spring assembly, a transmission shaft locking unhooking assembly and a unhooking trigger device,
the stress application spring assembly comprises a coil spring, a reel central shaft and a reel tail end fixing shaft, the reel central shaft penetrates through the center of the coil spring, an annular reel gear ring is arranged at the bottom of the reel central shaft, the reel gear ring is matched with a pull rod gear ring of a corresponding linkage pull rod,
the transmission shaft locking unhooking assembly comprises a trigger bracket, a plurality of guide rods are arranged in the trigger bracket, a slidable trigger sliding block is arranged on each guide rod, a front guide post, a guide elastic sheet, a guide triangular block and a trigger roller are arranged on the side wall of each trigger sliding block,
the unhooking trigger device comprises an upper driving seat, a middle rotating seat and a lower driving seat, wherein a rotatable annular linkage ring is arranged in the middle rotating seat, the upper driving seat is fixedly connected with the linkage ring, the lower driving seat is fixedly connected with the middle rotary seat, the upper driving seat is connected with the output shaft of the electric actuator, the lower driving seat is connected with the corresponding linkage pull rod, a first pin hole is arranged on the side wall of the linkage ring, a first telescopic trigger pin and a first trigger spring are arranged in the first pin hole, a second pin hole is arranged on the side wall of the upper driving seat, a second trigger pin and a second trigger spring are arranged in the second pin hole, the second trigger pin is arranged concentrically with the first trigger pin, and the second trigger pin is propped against the first trigger pin.
As a preferred embodiment of the present invention, the electrical junction box is connected to an external fuse.
The electric air brake capable of being quickly closed has the following advantages: when a fire occurs, the electric actuator can rotate by a small angle, and the air brake can complete the closing action, so that the response is sensitive and the reliability is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a rapidly closable electric damper according to the present invention;
FIG. 2 is a schematic perspective view of the rapidly closable electric damper of FIG. 1;
FIG. 3 is a schematic diagram of a further perspective view of the rapidly closable electric damper of FIG. 2;
FIG. 4 is an exploded perspective view of the damper of FIG. 3;
FIG. 5 is an enlarged detail view of the area P1 in FIG. 4;
FIG. 6 is an enlarged detail view of the area P2 in FIG. 4;
FIG. 7 is a further perspective view of the damper of FIG. 3;
FIG. 8 is a schematic view of the driveshaft lock-release assembly of FIG. 7, from another perspective;
FIG. 9 is a schematic view of the operation of the drive shaft locking and decoupling assembly of the damper of the present invention showing the second trigger pin in moving relationship to the drive shaft locking and decoupling assembly;
FIG. 10 is a schematic view of the operation of the transmission shaft locking and disengaging assembly of the damper of the present invention showing another relationship of movement of the second trigger pin to the transmission shaft locking and disengaging assembly;
FIG. 11 is an operational view of the unhooking trigger of the damper of the present invention with the second trigger pin in the linkage position;
fig. 12 is an operational view of the unhooking trigger of the damper according to the present invention, with the second trigger pin in the release position.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
As shown in fig. 1 to 12, the rapidly closable electric damper 1 includes a frame 2, a plurality of reversible blades 4 are disposed in the frame 2, a control housing 3 is disposed on the top of the frame 2, an electric actuator D and an electric junction box E are disposed on the top of the control housing 3, and the electric junction box E is connected to an external fuse E1.
The control shell 3 is internally provided with a strip-shaped linkage cross bar 5, the linkage cross bar 5 is provided with a plurality of rotatable linkage pull rods 6, the linkage pull rods 6 are connected with the corresponding blades 4, the linkage pull rods 6 comprise strip-shaped pull rod main bodies 60, and the tail parts of the pull rod main bodies 60 are provided with annular pull rod gear rings 61.
The control shell 3 is internally provided with a stress spring assembly 7, a transmission shaft locking unhooking assembly 8 and a unhooking trigger device 9.
The force spring assembly 7 includes a coil spring 71, a spool central shaft 72 and a spool end fixed shaft 73. The reel central shaft 72 penetrates through the center of the coil spring 71, and the bottom of the reel central shaft 72 is provided with an annular reel gear ring 72, and the reel gear ring 72 is matched with the corresponding pull rod gear ring 61 of the linkage pull rod 6.
The transmission shaft locking and unhooking assembly 8 comprises a trigger bracket 81, a plurality of guide rods 84 are arranged in the trigger bracket 81, a slidable trigger sliding block 82 is arranged on the guide rods 84, and a front guide post 85, a guide elastic sheet 86, a guide triangular block 87 and a trigger roller 83 are arranged on the side wall of the trigger sliding block 82.
The unhooking trigger device 9 comprises an upper driving seat 91, a middle rotating seat 92 and a lower driving seat 93, a rotatable annular linkage ring 94 is arranged in the middle rotary seat 92, the upper driving seat 91 is fixedly connected with the linkage ring 94, the lower driving seat 93 is fixedly connected with the middle rotating seat 92, the upper driving seat 91 is connected with the output shaft of the electric actuator D, the lower driving seat 93 is connected to the corresponding linkage rod 6, a first pin hole 941 is formed on a side wall of the linkage ring 94, a first retractable trigger pin 942 and a first trigger spring 943 are disposed in the first pin hole 941, a second pin hole 921 is formed on the side wall of the upper driving seat 91, a second trigger pin 922 and a second trigger spring 923 are arranged in the second pin hole 921, the second trigger pin 922 is disposed concentrically with the first trigger pin 942, and the second trigger pin 922 abuts against the first trigger pin 942.
The operation of the rapidly closable electric damper 1 will be described below.
As shown in fig. 2 and 3, all the vanes 4 are opened, and the damper 1 is in an opened state, and the second trigger pin 922 of the unhooking trigger 9 abuts against the trigger roller 83. Under the action of the electric actuator D, the output shaft of the electric actuator D always applies a torque to the upper driving seat 91 of the unhooking trigger 9, and the blade 4 is kept in an open state. At this point, drive shaft locking unhook assembly 8 is in the locked position.
When the fuse E1 detects a fire, the electrical junction box E stops supplying power to the electric actuator D, and the output shaft of the electric actuator D starts to rotate clockwise in the viewing angle of fig. 2. When the output shaft of the electric actuator D rotates by a small angle S, the second trigger pin 922 of the unhooking trigger device 9 slides over the trigger roller 83, so that, as shown in fig. 11, the second trigger pin 922 retracts, and at the same time, the second trigger pin 922 presses the first trigger pin 942, so that the first trigger pin 942 retracts, at this time, the first trigger pin 942 no longer constrains the link ring 94, the first trigger pin 942 is in the release position, at this time, the transmission shaft locking unhooking assembly 8 is in the release position, the link ring 94 rapidly rotates under the action of the coil spring 71 of the forcing spring assembly 7, so that the link rod 6 and the link bar 5 rotate, all the blades 4 synchronously and rapidly rotate and close, and the damper 1 is in the closed state. Then, the output shaft of the electric actuator D continues to rotate clockwise until reaching the stop position. Note that, from the position where the first trigger pin 942 is triggered to the off position, the range of the rotation angle of the output shaft of the electric actuator D is much larger than the small angle S.
When the fire is relieved, the electric junction box E supplies power to the electric actuator D again, and the output shaft of the electric actuator D starts to rotate anticlockwise under the observation angle in fig. 2. As shown in fig. 12, the linkage ring 94 rotates counterclockwise, the first triggering pin 942 extends out of the first pin hole 941 again and abuts against the second triggering pin 922, the first triggering pin 942 is in the linkage position, so that the middle rotating base 92 rotates counterclockwise, and simultaneously, the lower driving base 93 rotates counterclockwise synchronously until the second triggering pin 922 of the unhooking triggering device 9 abuts against the triggering roller 83 again, as shown in fig. 3, the damper 1 returns to the open state.
The operation relationship between the second trigger pin 922 and the trigger roller 83 will be further described below.
As shown in fig. 10, when the fire is relieved and the electric junction box E supplies power to the electric actuator D again, the output shaft of the electric actuator D starts to rotate counterclockwise, and at this time, the second trigger pin 922 is at the position a.
The output shaft of the electric actuator D continues to rotate counterclockwise, and the second trigger pin 922 starts to move in the direction M and presses the lower surface of the guide elastic piece 86 until the second trigger pin 922 slides to the position B.
The output shaft of the electric actuator D continues to rotate counterclockwise, and as shown in fig. 11, the second trigger pin 922 slides to position C beyond the guide triangular block 87. At this time, the second trigger pin 922 abuts against the trigger roller 83. In the process of anticlockwise rotating the output shaft of the electric actuator D, the linkage pull rod 6 synchronously rotates anticlockwise, the linkage cross bar 5 synchronously moves along with the linkage pull rod 6, the coil spring 71 of the stress application spring assembly 7 is continuously tightened, and elastic potential energy is accumulated.
When a fire occurs, the output shaft of the electric actuator D rotates clockwise, the second trigger pin 922 triggers under the action of the trigger roller 83, and the second trigger pin 922 slides through the upper surface of the guide elastic sheet 86 and through the gap between the front guide post 85 and the guide elastic sheet 86. It should be noted that the path traveled by the second trigger pin 922 during the process from the position a to the position C may be referred to as a locking path, and the path traveled by the second trigger pin 922 during the process from the position C to the position a may release the path. Obviously, the lock-up path and the release path constitute one circulation path.
When the electric actuator is powered on, the blade is opened by rotating anticlockwise to a limit position and is stopped, the opening state of the blade is kept (the force application spring assembly is in a tightening state), when a fire occurs, the fuse acts to cut off the power supply of the electric actuator (or the electric actuator is manually cut off without the fire), and at the moment, the reset state of the electric actuator starts to rotate clockwise. After the rotating mechanism rotates by a small angle, the rotating shaft reaches the trigger position of the transmission shaft locking and unhooking device to form trigger, the transmission shaft locking and unhooking device is triggered to be in an unhooking state, at the moment, the unhooking trigger device is divided into two parts, the upper part of the unhooking trigger device randomly and slowly resets clockwise along with the rotation of the electric actuator, the lower part of the shaft is acted by the stress application spring assembly, the blade can be quickly and clockwise closed through the transmission mechanism, and when the upper part of the unhooking trigger device rotates along with the electric actuator to reach the closing position, the transmission shaft locking and unhooking device resets and.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims (3)

1. An electric air brake capable of being quickly closed is characterized in that the electric air brake (1) capable of being quickly closed comprises a frame (2), a plurality of reversible blades (4) are arranged in the frame (2), an electric actuator (D) and an electric junction box (E) are arranged on the frame (2), an stressing spring assembly (7), a transmission shaft locking unhooking assembly (8) and an unhooking trigger device (9) are further arranged on the frame (2), the electric actuator (D) drives the unhooking trigger device (9),
wherein the content of the first and second substances,
the transmission shaft locking and disengaging assembly (8) is located between a locking position and a triggering position, when the transmission shaft locking and disengaging assembly (8) is located at the locking position, the blade (4) is kept in a closed state, and when the transmission shaft locking and disengaging assembly (8) is located at the triggering position, the stressing spring assembly (7) drives the blade (4) and enables the blade (4) to be closed rapidly.
2. An electric air brake capable of being closed quickly, characterized in that the electric air brake (1) capable of being closed quickly comprises a frame (2), a plurality of reversible blades (4) are arranged in the frame (2), a control shell (3) is arranged at the top of the frame (2), the top of the control shell (3) is provided with an electric actuator (D) and an electric junction box (E), a strip-shaped linkage transverse bar (5) is arranged in the control shell (3), a plurality of rotatable linkage pull rods (6) are arranged on the linkage cross bar (5), the linkage pull rod (6) is connected with the corresponding blade (4), the linkage pull rod (6) comprises a strip-shaped pull rod main body (60), the tail part of the pull rod main body (60) is provided with an annular pull rod gear ring (61),
a force application spring component (7), a transmission shaft locking unhooking component (8) and an unhooking trigger device (9) are arranged in the control shell (3),
the boosting spring assembly (7) comprises a coil spring (71), a reel central shaft (72) and a reel tail end fixing shaft (73), the reel central shaft (72) penetrates through the center of the coil spring (71), an annular reel gear ring (72) is arranged at the bottom of the reel central shaft (72), the reel gear ring (72) is matched with a pull rod gear ring (61) of a corresponding linkage pull rod (6), the transmission shaft locking and unhooking assembly (8) comprises a trigger bracket (81), a plurality of guide rods (84) are arranged in the trigger bracket (81), a slidable trigger sliding block (82) is arranged on each guide rod (84), a front guide column (85), a guide elastic sheet (86), a guide triangular block (87) and a trigger roller (83) are arranged on the side wall of the trigger sliding block (82),
unhooking trigger device (9) include one go up drive seat (91), put in one and rotate seat (92) and drive seat (93) down, put in and be equipped with a rotatable annular linkage ring (94) in rotating seat (92), last drive seat (91) with linkage ring (94) fixed connection, lower drive seat (93) with put in and rotate seat (92) fixed connection, last drive seat (91) with the output shaft of electric actuator (D) be connected, lower drive seat (93) be connected with corresponding linkage pull rod (6), the lateral wall of linkage ring (94) on a first pinhole (941), first pinhole (941) in be equipped with a first trigger pin (942) of telescopic and a first trigger spring (943), the lateral wall of last drive seat (91) on be equipped with a second pinhole (921), a second trigger pin (922) and a second trigger spring (923) are arranged in the second pin hole (921), the second trigger pin (922) and the first trigger pin (942) are concentrically arranged, and the second trigger pin (922) is propped against the first trigger pin (942).
3. The quick-closing electric damper according to claim 2, characterized in that the electric junction box (E) is connected to an external fuse (E1).
CN202011163921.1A 2020-10-27 2020-10-27 Electric air brake capable of being quickly closed Pending CN112156396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011163921.1A CN112156396A (en) 2020-10-27 2020-10-27 Electric air brake capable of being quickly closed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011163921.1A CN112156396A (en) 2020-10-27 2020-10-27 Electric air brake capable of being quickly closed

Publications (1)

Publication Number Publication Date
CN112156396A true CN112156396A (en) 2021-01-01

Family

ID=73864791

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011163921.1A Pending CN112156396A (en) 2020-10-27 2020-10-27 Electric air brake capable of being quickly closed

Country Status (1)

Country Link
CN (1) CN112156396A (en)

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