CN114919555B - Brake release device and loading method thereof - Google Patents
Brake release device and loading method thereof Download PDFInfo
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- CN114919555B CN114919555B CN202210068047.6A CN202210068047A CN114919555B CN 114919555 B CN114919555 B CN 114919555B CN 202210068047 A CN202210068047 A CN 202210068047A CN 114919555 B CN114919555 B CN 114919555B
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- cover plate
- wire
- compensator
- cavity
- housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—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 electrical assistance or drive
- B60T13/746—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 electrical assistance or drive and mechanical transmission of the braking action
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The brake release device comprises a driver, a lead wire, a stroke compensator and a stay wire assembly, wherein the lead wire is connected to one side of the driver; the brake release device comprises a main housing, and the driver, the travel compensator, and a part of the lead wire and a part of the stay wire assembly are positioned inside the main housing. Therefore, the main parts of the brake release device are prevented from being exposed to the external environment for a long time during operation, the waterproof and dustproof performances of the brake release device are improved, the influence of external environment factors on the performance of the brake release device is reduced, and the service life and the reliability of the brake release device are further improved.
Description
Technical Field
The invention relates to the field of railway vehicle parking braking, in particular to a braking relieving device and a loading method thereof.
Background
Currently, in the field of parking brake of railway vehicles, a main way to realize the parking brake function is to use a spring energy storage type parking brake, and the spring energy storage type parking brake can control the inflation and the exhaust of a parking cylinder through an electromagnetic valve to control the release or the application of the parking brake force. And, when the spring-loaded parking brake fails, a brake release device is typically employed to forcibly release its braking force.
However, the conventional brake release device does not take a waterproof and dustproof measure, and its internal structure is exposed to the external environment for a long period of time, which may lead to a reduction in the life and reliability of the brake release device.
Disclosure of Invention
The invention aims to provide a brake relieving device and a loading method thereof, which are beneficial to improving the waterproof and dustproof performances of the brake relieving device, thereby prolonging the service life and improving the reliability of the brake relieving device.
In order to achieve one of the above objects, an embodiment of the present invention provides a brake release device, including a driver, a stroke compensator and a wire assembly, wherein the stroke compensator is located between the driver and the wire assembly, one end of the stroke compensator is connected to the driver, and the other end of the stroke compensator is connected to the wire assembly;
the brake mitigation device includes a main housing, and the driver, the travel compensator, and a portion of the pull wire assembly are located within the main housing.
As a further improvement of an embodiment of the present invention, the main housing has a receiving chamber formed inside the main housing;
the driver and the travel compensator are positioned in the accommodating cavity, and part of the stay wire assembly is positioned in the accommodating cavity; one end of the stay wire assembly is connected with the travel compensator, and the other end of the stay wire assembly penetrates through the main shell to be connected with a railway vehicle parking brake.
As a further improvement of an embodiment of the present invention, the main housing includes a base, the accommodating chamber is formed in the base, the accommodating chamber is recessed inward with respect to a surface of the base, and the accommodating chamber has an opening in an outer wall of the base, and a wall forming the accommodating chamber includes an inner wall of the base; the main shell further comprises a cover plate, at least part of the cover plate is located on the outer wall of the base, the cover plate covers the opening of the accommodating cavity on the outer wall of the base, and the cover plate is connected with the base.
As a further improvement of an embodiment of the present invention, the main housing further includes sealing members, the sealing members are disposed around the accommodating cavity and are distributed continuously around the opening of the outer wall of the base, the sealing members are located between the base and the cover plate, the sealing members are respectively in contact with the wall of the base and the wall of the cover plate, and the sealing members have elasticity.
As a further improvement of an embodiment of the invention, the cover plate is detachably connected with the base, the outer wall of the base is provided with a threaded counter bore, the cover plate is provided with a threaded through hole which penetrates through the cover plate, and the threaded counter bore of the base and the threaded through hole of the cover plate are coaxially and oppositely arranged; the base and the cover plate are connected by screws respectively penetrating through threaded through holes and threaded holes of the base and the cover plate.
As a further improvement of an embodiment of the present invention, the base includes a rectangular portion and a cylindrical portion, the cylindrical portion is located at one end of the rectangular portion, and the cylindrical portion is fixedly connected with the rectangular portion;
the accommodating cavity comprises a first cavity and a second cavity, the first cavity is formed in the rectangular part, the first cavity is recessed inwards relative to the outer wall of the rectangular part, and the first cavity is provided with an opening on the outer wall of the rectangular part; the second cavity is formed in the cylindrical part, penetrates through the cylindrical part and is communicated with the first cavity, and the second cavity is provided with an opening on the outer wall of the cylindrical part; the cover plate further comprises a first cover plate and a second cover plate, the first cover plate is positioned on the outer wall of the rectangular part, the first cover plate covers the opening of the first cavity on the outer wall of the rectangular part, and the first cover plate is connected with the rectangular part; the second cover plate is positioned on the outer wall of the cylinder part, covers the opening of the second cavity on the outer wall of the cylinder part, and is connected with the cylinder part;
the driver is positioned in the first cavity and is fixedly connected with the rectangular part; the stroke compensator is positioned in the second cavity and is in clearance fit with the cylinder part.
As a further improvement of an embodiment of the present invention, the stroke compensator includes a stroke compensating housing; the stroke compensation shell is in clearance fit with the cylinder part;
the brake release device is also provided with a limit groove and a pin, one of the limit groove and the pin is arranged on the travel compensation shell, and the other is arranged on the cylinder part; the limiting grooves extend along the movement direction of the stroke compensator, at least part of the pins are located in the limiting grooves, and the pins are in clearance fit with the limiting grooves along the direction perpendicular to the movement direction of the stroke compensator.
As a further improvement of an embodiment of the present invention, the pull wire assembly is disposed through the second cover plate;
the wire pulling assembly comprises a wire main body and a wire housing, wherein the wire housing is sleeved on the periphery of the wire main body, and the wire main body is in clearance fit with the wire housing; one end of the wire main body is connected with the travel compensator, and the other end of the wire main body is connected with a railway vehicle parking brake; the wire housing is disposed through the second cover plate, and the wire housing is detachably connected with the second cover plate.
As a further improvement of an embodiment of the present invention, the outer circumference of the wire housing is formed with an external thread, the second cap plate has a threaded through hole penetrating a surface thereof, and the wire housing penetrates the threaded through hole of the second cap plate and is screwed with the second cap plate;
the brake release device further comprises a lock nut which is sleeved on the periphery of the wire housing and is in threaded connection with the wire housing, and the lock nut is abutted to one side, away from the base, of the second cover plate.
To achieve one of the above objects, an embodiment of the present invention provides a loading method of a brake release device, wherein the method includes:
assembling a brake release device, and fixing the assembled brake release device to the rail train;
moving the lock nut towards a direction away from the second cover plate;
moving the wire housing in a direction toward the stroke compensator;
connecting one end of the wire main body, which is far away from the stroke compensator, with a railway vehicle parking brake in a mounting way;
moving the wire housing away from the stroke compensator;
and moving the lock nut towards the direction of the second cover plate and abutting the lock nut against the second cover plate.
As a further improvement of an embodiment of the present invention, the step of "moving the wire housing toward the stroke compensator" specifically includes:
loosening the screw on the second cover plate to move the second cover plate in a direction away from the stroke compensator;
the wire housing is pushed in the direction of the stroke compensator.
As a further improvement of an embodiment of the present invention, the step of "moving the wire housing toward the stroke compensator" specifically includes:
the wire housing is rotationally displaced in the direction of the travel compensator by a threaded connection with the second cover plate.
As a further improvement of an embodiment of the present invention, the step of assembling the brake release device specifically includes:
one end of the stay wire assembly is connected with the travel compensator;
placing a driver and a travel compensator connected with a wire drawing assembly into the first cavity and the second cavity respectively;
connecting the driver with the stroke compensator;
covering the opening of the first cavity and the opening of the second cavity with a first cover plate and a second cover plate respectively;
the first cover plate is connected to the rectangular portion by screws, and the second cover plate is connected to the cylindrical portion.
Compared with the prior art, the invention has the beneficial effects that: through setting up internal environment and the isolated main casing of external world in the braking relief device, main spare parts such as driver, stroke compensator set up in the inside of main casing completely, lead wire and stay wire subassembly part set up in the inside of main casing, like this, avoided braking relief device to expose in external environment for a long time in its main spare part of during operation, improved the waterproof dustproof performance of braking relief device, reduced the influence that external environment factor led to the fact the braking relief device performance to further improve braking relief device's life and reliability.
Drawings
FIG. 1 is a schematic perspective view of a brake mitigation device with a main housing removed in accordance with an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a brake release device according to an embodiment of the present invention;
FIG. 3 is a schematic perspective cross-sectional view of a brake mitigation device in accordance with an embodiment of the invention;
FIG. 4 is an enlarged partial schematic view of portion A of FIG. 3;
FIG. 5 is a schematic view of an exploded construction of a main housing in an embodiment of the invention;
FIG. 6 is a schematic perspective view of a stroke compensating housing according to an embodiment of the invention;
FIG. 7 is a flow chart of a method of loading a brake mitigation device in accordance with an embodiment of the present invention;
FIG. 8 is a flow chart of one of the optimization steps of the loading method of the brake mitigation device of FIG. 7;
FIG. 9 is a schematic cross-sectional view of a first position of the line body in cooperation with a rail vehicle parking brake in accordance with an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a second position of the line body engaged with a rail vehicle parking brake in accordance with an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.
Referring to fig. 1, the brake relieving device 100 includes a driver 1, a lead wire 2, a stroke compensator 3, and a wire pulling assembly 4, the lead wire 2 being connected to one side of the driver 1; the stroke compensator 3 is located between the driver 1 and the wire assembly 4, and one end of the stroke compensator 3 is connected to the driver 1 and the other end of the stroke compensator 3 is connected to the wire assembly 4. The driver 1 is used for providing driving force, and the driver 1 can drive the stay wire assembly 4 to move; the lead wire 2 is used for transmitting an electric signal or a control signal to the driver 1; the travel compensator 3 is used for compensating the travel difference between the driver 1 and the stay wire assembly 4, and the stay wire assembly 4 is used for pulling a ratchet stop pawl on the railway vehicle parking brake, so that the parking brake force of the railway vehicle parking brake is forcedly relieved.
Referring to fig. 2 and 3, in one embodiment, the brake release device 100 further includes a main housing 5, the driver 1, a portion of the lead wires 2, the stroke compensator 3, and a portion of the wire pulling assembly 4 are located inside the main housing 5, and the main housing 5 is a closed housing, the inside of the main housing 5 being isolated from the outside. Because the brake release device 100 needs to be installed near a parking brake of a railway vehicle when in actual use, the actual working condition of the brake release device 100 is relatively bad, main parts of the device are exposed to the outside for a long time, and the outside moisture and dust easily cause the service life of the brake release device 100 to be shortened and the reliability to be reduced. In this embodiment, the main housing 5 with the internal environment isolated from the outside is provided in the brake release device 100, the main components such as the driver 1 and the stroke compensator 3 are completely disposed in the main housing 5, and the lead wire 2 and the stay wire assembly 4 are partially disposed in the main housing 5, so that the main components of the brake release device 100 are prevented from being exposed to the outside environment for a long time during operation, the waterproof and dustproof performance of the brake release device 100 is improved, the influence of the outside environment factors on the performance of the brake release device 100 is reduced, and the service life and reliability of the brake release device 100 are further improved.
In one embodiment, the driver 1 includes a motor 11 and a push rod 12, where the motor 11 can drive the push rod 12 to do a linear reciprocating motion, specifically, the motor 11 is connected to the push rod 12 through a transmission mechanism such as a combination gear, and the transmission mechanism such as the combination gear can convert the rotational motion of the motor 11 into a linear motion of the push rod 12, and forward and backward rotation of the motor 11 is used to implement forward or backward movement of the push rod 12. One end of the push rod 12 is connected to the stroke compensator 3, and the other end of the stroke compensator 3 is connected to the wire pulling assembly 4, so that the push rod 12 can pull the wire pulling assembly 4 to forcibly release the parking brake force of the railway vehicle parking brake. Of course, on the other hand, push rod 12 can also push pull wire assembly 4 to reset the ratchet pawl on the track park brake.
In one embodiment, one end of the lead wire 2 is connected to the driver 1, and the other end of the lead wire 2 is connected to an external controller, so that the controller can transmit a control signal to the driver 1 through the lead wire 2 to control the operation of the driver 1. For example, the controller receives an electrical signal applied by a parking force transmitted from a parking brake of a railway vehicle, the controller needs to issue a control signal for causing the driver 1 to pull the wire assembly 4 to forcibly relieve the parking force, the control signal is transmitted to the driver 1 through the lead wire 2, and the control signal can control the driver 1 to pull the wire assembly 4. In this way, the remote control of the brake release device 100 is facilitated, and when the railway vehicle is in normal operation or returns without fire or the railway vehicle parking brake fails, the remote control driver 1 pulls the stay wire assembly 4 to forcedly release the parking brake force of the railway vehicle parking brake.
Specifically, in one embodiment, the lead wire 2 is connected to the motor 11 of the driver 1, and on one hand, the other end of the lead wire 2 is connected to a power source to supply power to the motor 11, and on the other hand, the lead wire 2 is capable of transmitting a control signal to the motor 11, and the control signal is capable of controlling rotation of the motor 11. For example, in one embodiment, the lead 2 is connected to a power source to cause the motor 11 to start rotating in the forward direction, and the power source is reversed to cause the motor 11 to rotate in the reverse direction. In addition, when the lead wire 2 is connected to an additional controller, the rotation time, rotation speed, etc. of the motor 11 can be controlled, and will not be described in detail. The lead wire 2 can transmit signals sent by the controller to the motor 11 to realize rotation control of the motor 11, so that linear reciprocating motion control of the push rod 12 is further realized, the driver 1 can control the stay wire more flexibly, and the practicability of the brake relieving device 100 is further improved. Of course, in other embodiments, the brake release device 100 may not be provided with the lead wire 2, and the brake release device 100 may control the operation of the motor 11 by means of a wireless signal or the like, which will not be described in detail.
In one embodiment, the working stroke of the push rod 12 is greater than or equal to the maximum stroke required by the cable assembly 4 for forcibly releasing the parking brake force. The maximum stroke of the pull wire assembly 4 required for forcibly releasing the parking brake force is specifically the stroke of the pull wire assembly 4 when the pull wire assembly 4 fully opens the ratchet stop pawl of the railway vehicle parking brake. Specifically, when the ratchet locking pawl is not fully opened, the travel of the pull wire assembly 4 is the same as the working travel of the push rod 12, so that in order to ensure that the ratchet locking pawl can be fully opened, the working travel of the push rod 12 is greater than or equal to the maximum travel of the pull wire assembly 4 for pulling the ratchet locking pawl, which is beneficial to improving the effect of forcibly relieving the parking braking force and avoiding the situation that the parking braking force is not relieved in place.
In one embodiment, the stroke compensator 3 is located between the push rod 12 and the wire pulling assembly 4, one end of the stroke compensator 3 is connected with the push rod 12, the other end of the stroke compensator 3 is connected with the wire pulling assembly 4, and the stroke compensator 3 is used for compensating the stroke difference between the working stroke of the push rod 12 and the maximum stroke of the wire pulling assembly 4. In the case that the stroke compensator 3 is not provided and the working stroke of the push rod 12 is greater than the maximum stroke required for forcibly releasing the parking brake force of the wire pulling assembly 4, when the push rod 12 pulls the wire pulling assembly 4 to fully open the ratchet pawl of the parking brake of the railway vehicle, the push rod 12 continues to pull the wire pulling assembly 4 in the previous direction, and at this time, both ends of the wire pulling assembly 4 are subjected to opposite tensile stress due to the fact that the ratchet pawl cannot be further opened, which easily causes the breakage of the wire pulling assembly 4. In addition, the push rod 12 is also subjected to the reverse pulling force from the pull wire assembly 4 under the interaction of the forces, and the push rod 12 is connected with the motor 11 through a mechanical structure, so that the motor 11 is easy to clamp and rotate, and the service life of the whole brake release device 100 can be influenced under the long-term use state. In the present embodiment, the stroke compensator 3 is connected between the push rod 12 and the wire assembly 4, and is capable of compensating for a stroke difference between the push rod 12 and the wire assembly 4. Like this, after the ratchet holding pawl of rail vehicle parking brake is opened completely, push rod 12 can continue pulling stroke compensator 3, push rod 12 can not receive with the pulling force of action direction thinking, can not increase the tensile stress that stay wire subassembly 4 both ends received simultaneously, avoid motor 11 to appear blocking and change and stay wire subassembly 4 to take place cracked phenomenon, be favorable to further improving the life of braking and alleviating device 100.
In one embodiment, in combination with fig. 4, the travel compensator 3 comprises a travel compensation housing 31 and a piston rod 32, wherein the travel compensation housing 31 is fixedly connected to the push rod 12 and the piston rod 32 is fixedly connected to the pull wire assembly 4. The stroke compensating housing 31 has a piston chamber 310, at least part of the piston rod 32 is located in the piston chamber 310, and the piston rod 32 is movable along the inner wall of the piston chamber 310. The stroke compensator 3 further comprises an elastic element 33, the elastic element 33 being located in the piston chamber 310, the elastic element 33 being placed along the direction of movement of the piston rod 32 relative to the piston chamber 310, and one end of the elastic element 33 being in abutment with the inner wall of the piston chamber 310, the other end of the elastic element 33 being in abutment with the piston rod 32, the piston rod 32 being capable of compressing the elastic element 33 together with the inner wall of the piston chamber 310 when moving within the piston chamber 310.
Specifically, in one embodiment, the piston chamber 310 has an opening at one end of the stroke compensation housing 31, and a portion of the push rod 12 extends into the piston chamber 310 from the opening of the piston chamber 310, and the push rod 12 is fixedly connected to the stroke compensation housing 31 by a screw.
The stroke compensation housing 31 further has a through hole 311, the through hole 311 is located at the other side of the open end of the piston chamber 310, the through hole 311 is provided through the stroke compensation housing 31, the through hole 311 has openings in both the inner wall of the piston chamber 310 and the outer wall of the stroke compensation housing 31, the through hole 311 communicates the piston chamber 310 with the outside of the stroke compensation housing 31, and a part of the piston rod 32 is located in the through hole 311.
The piston rod 32 includes piston portion 321 and pole portion 322, and piston portion 321 and the inner wall clearance fit of piston chamber 310, the one end and the piston portion 321 fixed connection of pole portion 322, the other end of pole portion 322 pass through hole 311 and act as go-between subassembly 4 fixed connection, and piston portion 321 can drive pole portion 322 and remove like this, and pole portion 322 can drive act as go-between subassembly 4 and remove in order to force to alleviate the parking brake force of rail vehicle parking ware. In the present embodiment, the piston portion 321 and the rod portion 322 are integrally formed, and in other embodiments, the piston portion 321 and the rod portion 322 may be provided separately and fixedly connected by welding or bonding.
The elastic element 33 is sleeved on the outer periphery of the rod portion 322, one end of the elastic element 33 is abutted against the piston portion 321 along the axial direction of the rod portion 322, and the other end of the elastic element 33 is abutted against the inner wall of the piston cavity 310, so that the elastic element 33 can be compressed when the piston portion 321 moves towards the wire pulling assembly 4. In this embodiment, the elastic element 33 may be a spring, and in other embodiments, the elastic element 33 may be another elastic element, which will not be described in detail.
Before the pull wire assembly 4 does not fully open the ratchet stop pawl of the railway vehicle parking brake, the working stroke of the push rod 12 is the same as the moving stroke of the pull wire assembly 4, at this time, the push rod 12 drives the stroke compensation housing 31 to move, the stroke compensation housing 31 drives the piston rod 32 to move through the elastic action of the elastic element 33, and the piston rod 32 drives the pull wire assembly 4 to move. When the ratchet stop pawl of the parking brake of the railway vehicle is completely opened by the pull wire assembly 4, the working stroke of the push rod 12 is larger than the maximum movement stroke of the pull wire assembly 4, the push rod 12 continues to drive the stroke compensation shell 31 to move, the elastic element 33 between the stroke compensation shell 31 and the piston rod 32 is compressed, the excessive part of stroke of the push rod 12 is absorbed, the clamping rotation of the motor 11 is avoided, and meanwhile, the pull wire assembly 4 is prevented from being broken due to overlarge tensile stress.
In one embodiment, the main housing 5 has a receiving cavity 50, the receiving cavity 50 being formed in the interior of the main housing 5, the receiving cavity 50 being closed off from the exterior of the main housing 5. The driver 1 and the travel compensator 3 are located within the receiving chamber 50 and the portion of the wire 2 and the portion of the wire pulling assembly 4 are located within the receiving chamber 50. One end of the lead wire 2 is connected with the driver 1, the other end of the lead wire 2 passes through the main shell 5 to be connected with an external controller, one end of the pull wire assembly 4 is connected with the travel compensator 3, and the other end of the pull wire assembly 4 passes through the main shell 5 to be connected with a railway vehicle parking brake. In this way, the driver 1, the stroke compensator 3 and the parts respectively connected with the lead wire 2 and the pull wire assembly 4 are prevented from being directly exposed to the external environment while the normal working function of the brake release device 100 is ensured, the external moisture and dust cannot influence the driver 1, the stroke compensator 3 and the parts, and the service life and the reliability of the brake release device 100 during operation are improved.
Referring to fig. 5, in particular, in one embodiment, the main housing 5 includes a base 51, the receiving chamber 50 is formed at the base 51, the receiving chamber 50 is recessed inward with respect to a surface of the base 51, and the receiving chamber 50 has an opening at an outer wall of the base 51, and a wall forming the receiving chamber 50 includes an inner wall of the base 51. The main housing 5 further includes a cover plate 52, at least a portion of the cover plate 52 is located on the outer wall of the base 51, and the cover plate 52 covers the opening of the accommodating chamber 50 on the outer wall of the base 51, and the cover plate 52 is connected to the base 51. In this way, the main housing 5 advantageously forms a housing chamber 50 which is closed from the outside, inside which the actuator 1 and the travel compensator 3 are located, which is advantageous for protection against water and dust. In this embodiment, the base 51 and the cover 52 are cast from aluminum, but may be made from other metallic materials or waterproof materials having a certain strength in other embodiments, and will not be described in detail.
Still further, in one embodiment, the main housing 5 further includes sealing members 53, the sealing members 53 are disposed around the accommodating chamber 50 and are continuously distributed around the opening of the accommodating chamber 50 on the outer wall of the base 51, the sealing members 53 are located between the base 51 and the cover plate 52, the sealing members 53 are respectively in contact with the walls of the base 51 and the cover plate 52, and the sealing members 53 have elasticity. Specifically, the sealing member 53 may be an O-ring or a rectangular sealing ring made of a rubber material, and the sealing member 53 is disposed around the opening of the receiving chamber 50, and when the cover plate 52 covers the receiving chamber 50 and is connected to the base 51, the sealing member 53 is pressed to be elastically deformed, thereby sealing a gap between the cover plate 52 and the base 51, which is advantageous for further improving the dust-proof and water-proof capability of the brake relieving device 100.
Still further, in one embodiment, the cover plate 52 is removably coupled to the base plate 51. Specifically, the base 51 is provided with a threaded counter bore towards the outer wall of the cover plate 52, the cover plate 52 is provided with threaded pain through holes penetrating through the upper surface and the lower surface of the cover plate, the threaded counter bore of the base 51 is coaxial with and opposite to the threaded through holes of the cover plate 52, and the base 51 and the cover plate 52 are connected through screws penetrating through the threaded through holes and the threaded holes respectively to form screw connection. In this way, the mounting and dismounting of the driver 1 and the stroke compensator 3 are facilitated, and the practicality of the brake release device 100 is improved. Of course, in order to facilitate the setting of the lead 2 and the pull wire assembly 4 through the main housing 5, the base 51 or the cover plate 52 may further be provided with a through hole penetrating through the surface thereof, and the lead 2 and the pull wire assembly 4 respectively penetrate through the corresponding through holes and are correspondingly subjected to a certain waterproof treatment at the through holes, so that the installation and fixation of the lead 2 and the pull wire assembly 4 are facilitated, and meanwhile, the waterproof and dustproof performances of the brake relieving device 100 are ensured.
In this embodiment, the surface of the sealing member 53 may also be initially provided with a threaded through hole corresponding to the threaded through hole of the base 51 and the threaded through hole of the cover 52, so that when the main housing 5 is mounted, a screw passes through both the threaded through hole of the cover 52 and the threaded through hole of the sealing member 53 and enters the threaded through hole of the base 51, so that the sealing member 53 is naturally fixed between the base 51 and the cover 52 and presses and seals the gap where the base 51 and the cover 52 are connected. Of course, in other embodiments, the sealing member 53 may be fixed to the surface of the cover plate 52 facing the base 51 or the surface of the base 51 facing the cover plate 52, and when the cover plate 52 is connected to the base 51, the sealing member 53 is also pressed to seal the gap at the connection.
In one embodiment, the base 51 includes a rectangular portion 511 and a cylindrical portion 512, the cylindrical portion 512 is located at one end of the rectangular portion 511, and the cylindrical portion 512 is fixedly connected to the rectangular portion 511, in this embodiment, the cylindrical portion 512 and the rectangular portion 511 are integrally formed, and in other embodiments, the cylindrical portion 512 and the rectangular portion 511 may be integrally formed and then fixedly connected.
The accommodating chamber 50 includes a first chamber 501 and a second chamber 502, wherein the first chamber 501 is formed at the rectangular portion 511, the first chamber 501 is recessed inward with respect to the outer wall of the rectangular portion 511, and the first chamber 501 has an opening at the outer wall of the rectangular portion 511; the second chamber 502 is formed in the cylindrical portion 512, the second chamber 502 is provided through the cylindrical portion 512, the second chamber 502 communicates with the first chamber 501, and the second chamber 502 has an opening in an outer wall of the cylindrical portion 512. The cover plate 52 includes a first cover plate 521 and a second cover plate 522, wherein the first cover plate 521 is located on the outer wall of the rectangular portion 511, the first cover plate 521 covers the opening of the first cavity 501 on the outer wall of the rectangular portion 511, and the first cover plate 521 is connected with the rectangular portion 511; a second cover 522 is located on the outer wall of the cylindrical portion 512, the second cover 522 covers the opening of the second cavity 502 at the outer wall of the cylindrical portion 512, and the second cover 522 is connected to the cylindrical portion 512.
The driver 1 is located in the first cavity 501 and the driver 1 is fixedly connected with the main housing 5. The stroke compensator 3 is located in the second cavity 502 and the stroke compensator 3 is arranged in a clearance fit with the second cavity 502.
Specifically, in this embodiment, when the brake release device 100 is in operation, the stroke compensator 3 may be in a motion state, so that the driver 1 and the stroke compensator 3 are respectively disposed in the first cavity 501 and the second cavity 502 which are spaced apart, and the driver 1 is fixedly connected to the rectangular portion 511, the stroke compensator 3 is disposed in a clearance fit with the cylindrical portion 512, and the stroke compensator 3 can slide in the second cavity 502, which is beneficial to improving the stability of the structure of the brake release device 100. And the openings of the first cavity 501 and the second cavity 502 are covered by the first cover plate 521 and the second cover plate 522, respectively, which is beneficial to ensuring the waterproof and dustproof performance. It will be appreciated that in this embodiment, the number of seals 53 may be two, and disposed around the openings of the first and second chambers 501 and 502, respectively, and the first and second cover plates 521 and 522 respectively press the respective seals 53 when the base 51 is connected, thereby achieving further improvement in waterproof and dustproof performance.
In one embodiment, and with reference to fig. 6, the travel compensation housing 31 is disposed in a clearance fit with the barrel portion 512. The brake release device 100 further includes a limit groove 60 and a pin, wherein the limit groove 60 is disposed to extend in the movement direction of the stroke compensator 3, and the limit groove 60 is disposed on the outer surface of the stroke compensator housing 31, and the pin is disposed on the cylindrical portion 512. When the brake release device 100 is assembled, at least part of the pin is located in the limit groove 60, and the pin is in clearance fit with the limit groove 60 along the direction perpendicular to the movement of the stroke compensator 3, so that the pin can limit the stroke compensation housing 31 along the direction perpendicular to the movement of the stroke compensator 3 while not obstructing the movement of the stroke compensator 3, thereby avoiding the rotation of the stroke compensator 3 during operation and improving the structural stability of the brake release device 100. Of course, in other embodiments, the limit groove 60 may be formed on the inner surface of the cylindrical portion 512, and the pin may be provided on the stroke compensation housing 31, so that the same limit effect can be achieved, and will not be described in detail.
In one embodiment, the pull wire assembly 4 is disposed through the second cover plate 522. Specifically, the wire pulling assembly 4 includes a wire main body 41 and a wire housing 42, the wire housing 42 is sleeved on the outer periphery of the wire main body 41, the wire main body 41 is in clearance fit with the wire housing 42, and the wire main body 41 can slide relative to the wire housing 42. One end of the wire body 41 is connected to the stroke compensator 3, and the other end of the wire body 41 is connected to the railway vehicle parking brake. The wire housing 42 is disposed through the second cover plate 522, and the wire housing 42 is detachably connected with the second cover plate 522.
In this embodiment, the wire body 41 is used to pull the ratchet pawl on the control rail vehicle parking brake open to achieve a positive relief of the parking brake force. The wire housing 42 is located at the outer periphery of the wire body 41, and the wire housing 42 protects the wire body 41 from corrosion or damage by the external environment. The relative sliding between the wire body 41 and the wire housing 42 facilitates the mounting connection of the end of the wire body 41 to the railway vehicle parking brake. It will be appreciated that when the cable assembly 4 is engaged with a railway car park brake, the end of the cable body 41 needs to extend beyond a portion of the cable housing 42 to be in mounted engagement with the railway car park brake. And the detachable connection of the wire housing 42 to the second cover plate 522 facilitates assembly of the brake release device 100.
Specifically, in one embodiment, the outer circumference of the wire housing 42 is formed with external threads, the second cover plate 522 has a threaded through hole penetrating its surface, and the wire housing 42 passes through the threaded through hole of the second cover plate 522 and is screwed with the second cover plate 522. In this way, not only the relative positional fixation of the wire housing 42 and the second cover plate 522 can be achieved, but also the wire housing 42 can move its position by the screw-fit relationship with the second cover plate 522, thereby facilitating the adjustment of the relative positional relationship between the wire housing 42 and the wire body 41 after the completion of the assembly of the brake release device 100, thereby facilitating the installation connection of the wire body 41 with the railway vehicle parking brake.
The brake release device 100 further includes a lock nut 43, where the lock nut 43 is sleeved on the outer periphery of the wire housing 42, and the lock nut 43 is screwed with the wire housing 42, and the lock nut 43 abuts against a side of the second cover 522 away from the base 51. Thus, when the brake release device 100, the pull wire assembly 4 and the railway vehicle parking brake are all installed or connected, the relative position between the wire housing 42 and the second cover plate 522 is limited, so that the wire housing is prevented from sliding by the screw threads in the screw thread through holes of the second cover plate 522 due to accidents, and the stability of the structure is further improved.
Referring to fig. 7, a loading method of the brake mitigation device 100 includes:
assembling the brake release device 100, and fixing the assembled brake release device 100 to the rail train;
moving the lock nut 43 in a direction away from the second cover plate 522;
moving the wire housing 42 toward the stroke compensator 3;
connecting the end of the wire body 41 remote from the travel compensator 3 with a rail vehicle parking brake mounting;
moving the wire housing 42 in a direction away from the stroke compensator 3;
the lock nut 43 is moved toward the second cover plate 522 and is abutted against the second cover plate 522.
Specifically, in this embodiment, the brake release device 100 is preassembled in the factory, and then the brake release device 100 is fixed to the rail train. Since the brake release device 100 is assembled, the wire body 41 is preset inside the wire housing 42, however, the wire assembly 4 is mounted to the railway vehicle parking brake in a manner that requires the wire body 41 to be engaged therewith, the lock nut 43 is released, and the lock nut 43 is moved in a direction away from the stroke compensator 3, so that the lock nut 43 does not perform a fastening function, and the wire housing 42 can be freely moved. The wire housing 42 is moved in the direction of the stroke compensator 3 such that the relative positional relationship of the wire body 41 and the wire housing 42 is changed, and the end of the wire body 41 remote from the stroke compensator 3 is protruded out of the wire housing 42, and then the end of the wire body 41 remote from the stroke compensator 3 is attached to the railway vehicle parking brake mounting as shown in fig. 9. After the wire main body 41 is connected to the railway train parking brake, the wire housing 42 is moved in a direction away from the stroke compensator 3, and the wire housing 42 is reset, as shown in fig. 10. The lock nut 43 is then re-abutted against the second cover plate 522 to complete the locking installation, thereby preventing the wire housing 42 from moving due to an unexpected situation and improving structural stability.
In one embodiment, the step of "moving the wire housing 42 toward the stroke compensator 3" specifically includes:
loosening the screw on the second cover 522, moving the second cover 522 in a direction away from the stroke compensator 3;
the wire housing 42 is pushed in the direction of the stroke compensator 3.
Specifically, in this embodiment, the screw fixing the second cover 522 is first removed, and the second cover 522 is moved in a direction away from the stroke compensator 3, at which time the wire housing 42 is freely pushed in a direction toward the stroke compensator 3 because the wire housing 42 is not fixed or restrained, so that the wire body 41 at the other end protrudes out of the wire housing 42.
In one embodiment, the step of "moving the wire housing 42 toward the stroke compensator 3" specifically includes:
the wire housing 42 is rotationally moved in the direction of the stroke compensator 3 by a threaded connection with the second cover plate 522.
In this embodiment, the second cover 522 is not detached, but since the wire housing 42 is screw-coupled with the second cover 522, the wire housing 42 can be directly rotated toward the stroke compensator 3 by the screw-coupled relationship with the second cover 522, so that the wire body 41 at the other end protrudes out of the wire housing 42.
Referring to fig. 8, the step of assembling the brake mitigation device 100 specifically includes:
one end of a stay wire assembly 4 is connected with the travel compensator 3;
placing the driver 1 and the travel compensator 3 with the wire assembly 4 attached thereto into the first cavity 501 and the second cavity 502, respectively;
connecting the driver 1 and the stroke compensator 3;
the first cover plate 521 and the second cover plate 522 are respectively covered on the opening of the first chamber 501 and the opening of the second chamber 502;
the first cover plate 521 is connected to the rectangular portion 511 by screws, and the second cover plate 522 is connected to the cylindrical portion 512.
Specifically, in this embodiment, in order to smoothly complete the assembly of the driver 1, the stroke compensator 3, and the main casing 5, it is necessary to mount the driver 1 and the stroke compensator 3 from the first chamber 501 and the second chamber 502, respectively, then connect the driver 1 and the stroke compensator 3 inside the main casing 5, and finally connect the first cover plate 521 and the second cover plate 522 with the rectangular portion 511 and the cylindrical portion 512, respectively, to complete the closed assembly of the main casing 5.
The technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, all of the combinations of the technical features should be considered as being within the scope of the description.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or substituted by equivalent embodiments without departing from the spirit and scope of the present invention and all modifications thereof are intended to be included in the scope of the claims of the present invention.
Claims (12)
1. The brake release device is characterized by comprising a driver, a stroke compensator and a stay wire assembly, wherein the stroke compensator is positioned between the driver and the stay wire assembly, one end of the stroke compensator is connected with the driver, and the other end of the stroke compensator is connected with the stay wire assembly;
the brake mitigation device includes a main housing, the driver, the travel compensator, and a portion of the pull wire assembly being located inside the main housing;
the main shell further comprises a cover plate, the cover plate further comprises a second cover plate, and the wire drawing assembly penetrates through the second cover plate;
the wire pulling assembly comprises a wire main body and a wire housing, wherein the wire housing is sleeved on the periphery of the wire main body, and the wire main body is in clearance fit with the wire housing; one end of the wire main body is connected with the travel compensator, and the other end of the wire main body is connected with a railway vehicle parking brake; the wire housing is disposed through the second cover plate, and the wire housing is detachably connected with the second cover plate.
2. The brake mitigation device of claim 1, wherein the main housing has a receiving cavity formed within an interior of the main housing;
the driver and the travel compensator are positioned in the accommodating cavity, and part of the stay wire assembly is positioned in the accommodating cavity; one end of the stay wire assembly is connected with the travel compensator, and the other end of the stay wire assembly penetrates through the main shell to be connected with a railway vehicle parking brake.
3. The brake mitigation device of claim 2 wherein the main housing comprises a base, the receiving cavity is formed in the base, the receiving cavity is recessed inward relative to a surface of the base, and the receiving cavity has an opening in an outer wall of the base, a wall forming the receiving cavity comprises an inner wall of the base; at least part of the cover plate is positioned on the outer wall of the base, the cover plate covers the opening of the accommodating cavity on the outer wall of the base, and the cover plate is connected with the base.
4. A brake mitigation device according to claim 3, wherein the main housing further comprises a seal disposed in a circumferentially continuous arrangement around the opening of the housing cavity in the outer wall of the base, the seal being located between the base and the cover, the seal being in contact with the wall of the base and the wall of the cover, respectively, the seal being resilient.
5. The brake mitigation device of claim 3 wherein the cover plate is removably coupled to the base, a threaded counterbore is provided in an outer wall of the base, the cover plate has a threaded throughbore disposed therethrough, and the threaded counterbore of the base is coaxially opposed to the threaded throughbore of the cover plate; the base and the cover plate are connected by screws respectively penetrating through threaded through holes and threaded holes of the base and the cover plate.
6. The brake mitigation device of claim 3 wherein the base comprises a rectangular portion and a cylindrical portion, the cylindrical portion being located at one end of the rectangular portion, the cylindrical portion being fixedly connected to the rectangular portion;
the accommodating cavity comprises a first cavity and a second cavity, the first cavity is formed in the rectangular part, the first cavity is recessed inwards relative to the outer wall of the rectangular part, and the first cavity is provided with an opening on the outer wall of the rectangular part; the second cavity is formed in the cylindrical part, penetrates through the cylindrical part and is communicated with the first cavity, and the second cavity is provided with an opening on the outer wall of the cylindrical part; the cover plate further comprises a first cover plate, the first cover plate is positioned on the outer wall of the rectangular part, the first cover plate covers the opening of the first cavity on the outer wall of the rectangular part, and the first cover plate is connected with the rectangular part; the second cover plate is positioned on the outer wall of the cylinder part, covers the opening of the second cavity on the outer wall of the cylinder part, and is connected with the cylinder part;
the driver is positioned in the first cavity and is fixedly connected with the rectangular part; the stroke compensator is positioned in the second cavity, and the stroke compensator is in clearance fit with the cylinder part.
7. The brake mitigation device of claim 6, wherein the travel compensator comprises a travel compensation housing; the stroke compensation shell is in clearance fit with the cylinder part;
the brake release device is also provided with a limit groove and a pin, one of the limit groove and the pin is arranged on the travel compensation shell, and the other is arranged on the cylinder part; the limiting grooves extend along the movement direction of the stroke compensator, at least part of the pins are located in the limiting grooves, and the pins are in clearance fit with the limiting grooves along the direction perpendicular to the movement direction of the stroke compensator.
8. The brake mitigation device of claim 6 wherein the outer circumference of the wire housing is formed with external threads and the second cover plate has a threaded through hole through a surface thereof, the wire housing passing through the threaded through hole of the second cover plate and being threadably connected to the second cover plate;
the brake release device further comprises a lock nut which is sleeved on the periphery of the wire housing and is in threaded connection with the wire housing, and the lock nut is abutted to one side, away from the base, of the second cover plate.
9. A method of loading a brake mitigation device, the method comprising:
assembling a brake release device, and fixing the assembled brake release device to the rail train;
moving the lock nut towards a direction away from the second cover plate;
moving the wire housing in a direction toward the stroke compensator;
connecting one end of the wire main body, which is far away from the stroke compensator, with a railway vehicle parking brake in a mounting way;
moving the wire housing away from the stroke compensator;
and moving the lock nut towards the direction of the second cover plate and abutting the lock nut against the second cover plate.
10. The method of loading a brake release device according to claim 9, wherein the step of moving the wire housing in a direction toward the stroke compensator specifically comprises:
loosening the screw on the second cover plate to move the second cover plate in a direction away from the stroke compensator;
the wire housing is pushed in the direction of the stroke compensator.
11. The method of loading a brake release device according to claim 9, wherein the step of moving the wire housing in a direction toward the stroke compensator specifically comprises:
the wire housing is rotationally displaced in the direction of the travel compensator by a threaded connection with the second cover plate.
12. The method of loading a brake release device of claim 9, wherein the step of assembling the brake release device specifically comprises:
one end of the stay wire assembly is connected with the travel compensator;
placing a driver and a travel compensator connected with a wire drawing assembly into the first cavity and the second cavity respectively;
connecting the driver with the stroke compensator;
covering the opening of the first cavity and the opening of the second cavity with a first cover plate and a second cover plate respectively;
the first cover plate is connected to the rectangular portion by screws, and the second cover plate is connected to the cylindrical portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068047.6A CN114919555B (en) | 2022-01-20 | 2022-01-20 | Brake release device and loading method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068047.6A CN114919555B (en) | 2022-01-20 | 2022-01-20 | Brake release device and loading method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114919555A CN114919555A (en) | 2022-08-19 |
| CN114919555B true CN114919555B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210068047.6A Active CN114919555B (en) | 2022-01-20 | 2022-01-20 | Brake release device and loading method thereof |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10043739A1 (en) * | 2000-09-05 | 2002-03-21 | Fico Cables Sa | hand brake |
| DE10102685B4 (en) * | 2001-01-22 | 2004-04-08 | Fico Cables, S.A., Rubi | Actuating mechanism with force sensor for one brake |
| KR20130048313A (en) * | 2011-11-02 | 2013-05-10 | 주식회사 만도 | Electric parking brake |
| CN105299107B (en) * | 2014-05-28 | 2018-01-05 | 现代摩比斯株式会社 | Stop device |
| CN106926865B (en) * | 2017-03-31 | 2019-06-18 | 中车青岛四方车辆研究所有限公司 | The alleviation device of locomotive parking brake device |
| CN111361599A (en) * | 2020-04-14 | 2020-07-03 | 南京中车浦镇海泰制动设备有限公司 | Parking brake electric auxiliary remote relieving mechanism for rail transit vehicle |
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