WO2021219133A1 - Connection of a compact brake caliper assembly to a bogie - Google Patents

Connection of a compact brake caliper assembly to a bogie Download PDF

Info

Publication number
WO2021219133A1
WO2021219133A1 PCT/CN2021/091545 CN2021091545W WO2021219133A1 WO 2021219133 A1 WO2021219133 A1 WO 2021219133A1 CN 2021091545 W CN2021091545 W CN 2021091545W WO 2021219133 A1 WO2021219133 A1 WO 2021219133A1
Authority
WO
WIPO (PCT)
Prior art keywords
bushing
housing
ring
brake caliper
caliper assembly
Prior art date
Application number
PCT/CN2021/091545
Other languages
French (fr)
Inventor
Jixiang XU
Erich Fuderer
Original Assignee
Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
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 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH filed Critical Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
Publication of WO2021219133A1 publication Critical patent/WO2021219133A1/en

Links

Images

Classifications

    • 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
    • F16D55/2245—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 in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type 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
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3828—End stop features or buffering

Definitions

  • the invention relates to the field of railway vehicle, in particular to a compact brake caliper assembly with a new suspension mode.
  • the housing is connected to the bogie through a hanger provided with a plurality of bolt assemblies, so that additional devices are required, which complicates the operation and also increases the cost.
  • the rubber bushing bears all braking force during braking. Although a damping function is realized, it is possible to cause a shorter service life of the rubber bushing and the rubber bushing is prone to damage.
  • present invention provides a compact brake caliper assembly with a new suspension mode, which is configured to protect the rubber bushing from being easily damaged.
  • present invention provides a compact brake caliper assembly with a new suspension mode, which comprises a caliper body and a housing connected to the caliper body, said housing including a first housing and a second housing arranged below the first housing, wherein the first housing is connected to the bogie; wherein the first housing is provided with at least one opening in which a fastener is mounted to fixedly connect the first housing to the bogie; the fastener provided within the opening is externally sleeved with at least one protective bushing, wherein the protective bushing has a hollow cylindrical structure;
  • the protective bushing includes first bushings arranged at both ends of the fastener, wherein a second bushing is arranged between the two first bushings, and the outer side of the second bushing is sleeved with a third bushing, and the third bushing is in contact with a lateral wall of the opening, wherein there is a preset distance between the third bushing and the second bushing in a normal state.
  • the brake caliper assembly when an external force received by the brake caliper assembly exceeds a preset threshold value, the brake caliper assembly will be switched from a normal state to an emergency state, wherein the third bushing is in contact with the second bushing in the emergency state.
  • the first bushing comprises a first ring in contact with the fastener, a second ring sleeved on an outer side of the first ring, and a third ring sleeved on an outer side of the second ring, wherein the first ring protrudes beyond the second ring and the third ring, wherein the first ring and the third ring are both made of a metal material, and the second ring is made of rubber.
  • the second bushing is provided with a step that is adapted to the first ring.
  • the second bushing and the third bushing are both made of a metal material.
  • the compact brake caliper assembly with a new suspension mode further comprises a fourth bushing in contact with the fastener, wherein the fourth bushing is externally sleeved with both the first bushing and the second bushing, wherein the fourth bushing has a hollow cylindrical structure, and the fourth bushing is made of a metal material.
  • an arc-shaped surface is provided at an end of the second bushing, said end being in contact with the fourth bushing.
  • a plurality of grooves are provided in a lateral wall of the fourth bushing which is close to the fastener, wherein an O-ring or O-rings is/are arranged in the grooves.
  • first housing and the second housing are integrally formed.
  • a direction of the opening is parallel to a length direction of the second housing.
  • the compact brake caliper assembly of the present invention can change the bearing capacity of the first bushing by changing a distance between the second bushing and the third bushing, so that the first bushing does not bear all braking force.
  • By way of an organic combination of a plurality of protective bushings it is possible to not only achieve a shock absorption effect, but also ensure that the first bushing is not prone to damage.
  • FIG. 1 is a top view of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
  • FIG. 2 is an enlarged view of a connection mode of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
  • FIG. 3 is a perspective view of a housing of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
  • FIG. 4 is a perspective view of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
  • FIG. 5 is a perspective view of a second bushing of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
  • FIG. 6 is a perspective view of a third bushing of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
  • Reference signs include: 1-caliper body, 2-housing, 21-first housing, 22-second housing, 3-bogie, 4-opening, 5-fastener, 6-first bushing, 61-first ring, 62-second ring, 63-third ring, 7-second bushing, 8-third bushing, 9-fourth bushing, 10-O-ring.
  • the brake caliper assembly comprises a caliper body 1 and a housing 2 (the housing 2 is a main component of the caliper body) connected to the caliper body 1, wherein the housing 2 is connected to the bogie 3.
  • the housing 2 comprises a first housing 21 and a second housing 22 connected to the first housing 21, wherein the first housing 21 is arranged above the second housing 22.
  • the specific structure of the first housing 21 is as follows: referring to FIG.
  • the first housing 21 preferably has a cubic structure, and the first housing 21 is provided with at least one opening 4 in which a fastener 5 is mounted to fixedly connect the first housing 21 to the bogie 3.
  • the direction of the opening 4 is parallel to a length direction of the second housing 22. In the main view direction shown in FIG. 3, the opening 4 extends along a left-right direction.
  • the number of the openings may be two, three, four or more as necessary.
  • a connection between the housing and the parts inside the caliper body remains unchanged and also a connection between the housing and the bogie is converted into a transverse installation, so that it is possible to omit the original caliper hanger or the like, thereby reducing the installation space occupied by the caliper assembly and a distance from a wheel to an installation center.
  • the fastener is preferably a bolt assembly, and the fastener 5 provided within the opening is externally sleeved with at least one protective bushing, wherein the protective bushing has a hollow cylindrical structure.
  • the protective bushing comprises first bushings 6 arranged at both ends of the fastener 5, wherein a second bushing 7 is provided between the two first bushings 6, and the two first bushings are generally configured to bear a common load. Further, a predetermined distance is maintained between two sides of the first housing 21 which are close to the bogie and the bogie respectively, and the middle of the bogie has a space for accommodating the first housing. After assembly, there is a certain gap between the housing and the bogie so as to ensure that the caliper assembly can swing leftwards and rightwards relative to the bogie, and can return to an initial centering position by means of the two first bushings after swinging.
  • the first bushing 6 includes a first ring 61 which is in contact with the fastener 5, a second ring 62 sleeved on an outer side of the first ring 61, and a third ring 63 sleeved on an outer side of the second ring 62.
  • the first ring 61 and the third ring 63 are both made of a metal material, which is preferably copper or steel, and the second ring 62 is made of rubber, so that the first bushing 6 is conveniently shaped and is not prone to damage.
  • the first ring 61 protrudes beyond the second ring 62 and the third ring 63.
  • the second bushing 7 is provided with a step that is adapted to the first ring 61, as shown in FIG. 5, so that the second bushing 7 and the two first bushings 6 firmly cooperate, thereby preventing loosening, and achieving a positioning function facilitating convenient installation.
  • the number of the openings is two, and the number of the protective bushing is four.
  • the specific structure of the protective bushing is shown in Figs. 1 and 2.
  • the outer side of the second bushing 7 is sleeved with a third bushing 8, and the third bushing 8 is in contact with a lateral wall of the opening 4, wherein a diameter of the third bushing 8 is greater than a diameter of the second bushing 7.
  • the second bushing 7 and the third bushing 8 are preferably made of a metal material, which is preferably copper or steel.
  • the normal state means that an external force received by the brake caliper assembly is within a preset threshold range
  • the second bushing 7 and the third bushing 8 are generally configured to bear a load under emergency circumstances.
  • the brake caliper assembly will be switched from a normal state to an emergency state.
  • the emergency state the second bushing 7 is in contact with the third bushing 8, so that the second bushing 7 and the third bushing 8 bear a main part of the load and play a main load-bearing role.
  • the outer side of the fastener 5 provided within the opening is sleeved with a fourth bushing 9, wherein the fourth bushing 9 is externally sleeved with the protective bushing.
  • the fourth bushing 9 has a hollow cylindrical structure.
  • the fourth bushing 9 is made of a metal material, and the fourth bushing 9 is configured to protect the bolt and produce a sealing effect.
  • a plurality of grooves are provided in a lateral wall of the fourth bushing 9, said lateral wall being close to the fastener 5, wherein in the grooves respectively an O-ring in contact with the fastener is provided, and the O-ring produces a sealing effect.
  • an arc-shaped surface is provided at an end of the second bushing 7, said end being in contact with the fourth bushing 9, as shown in FIG. 6.
  • the circular arc surface on the second bushing 7 is mainly intended to ensure that the caliper assembly can swing leftwards and rightwards relative to the bogie under emergency circumstances.
  • the radius of the circular arc is determined by a swinging angle as required.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The present invention relates to a compact brake caliper assembly connected to a bogie. The assembly comprises a caliper body (1) and a housing. The housing includes a first housing (21) and a second housing, wherein the first housing is connected to the bogie, and the first housing is provided with at least one opening in which a fastener (5) is used to fixedly connect the first housing (21) to the bogie, and the fastener provided within the opening is externally sleeved with at least one protective bushing (6, 7, 8). The protective bushing comprises first bushings (6) arranged at both ends of the fastener, wherein a second bushing (7) is arranged between the two first bushings, and a third bushing (8) is sleeved on an outer side of the second bushing, wherein there is a preset distance between the third bushing and the second bushing in a normal state. In the present invention, a bearing capacity of the first bushing is changed by changing the distance between the second bushing and the third bushing, so that the first bushing does not bear all braking force. By way of an organic combination of a plurality of protective bushings, it is possible to not only achieve a shock absorption effect, but also ensure that the first bushing is not prone to damage.

Description

[Title established by the ISA under Rule 37.2] CONNECTION OF A COMPACT BRAKE CALIPER ASSEMBLY TO A BOGIE FIELD OF THE INVENTION
The invention relates to the field of railway vehicle, in particular to a compact brake caliper assembly with a new suspension mode.
BACKGROUND OF THE INVENTION
With the rapid development of modern subways and locomotives, caliper brake manufacturers are confronted with the pressure of shorter and shorter delivery periods. Meanwhile, the diversity of train bogies puts forward more requirements on a suspension mode of a caliper. At present, the housing is connected to the bogie through a hanger provided with a plurality of bolt assemblies, so that additional devices are required, which complicates the operation and also increases the cost. Regarding the present connection mode, the rubber bushing bears all braking force during braking. Although a damping function is realized, it is possible to cause a shorter service life of the rubber bushing and the rubber bushing is prone to damage.
CONTENT OF THE INVENTION
In order to solve the problems existing in the prior art, present invention provides a compact brake caliper assembly with a new suspension mode, which is configured to protect the rubber bushing from being easily damaged.
The technical solution is as follows: present invention provides a compact brake caliper assembly with a new suspension mode, which comprises a caliper body and a housing connected to the caliper body, said housing including a first housing and a second housing arranged below the first housing, wherein the first housing is connected to the bogie; wherein the first housing is provided with at least one opening in which a fastener is mounted to fixedly connect the first housing to the bogie; the fastener provided within the opening is externally  sleeved with at least one protective bushing, wherein the protective bushing has a hollow cylindrical structure;
the protective bushing includes first bushings arranged at both ends of the fastener, wherein a second bushing is arranged between the two first bushings, and the outer side of the second bushing is sleeved with a third bushing, and the third bushing is in contact with a lateral wall of the opening, wherein there is a preset distance between the third bushing and the second bushing in a normal state.
Further, when an external force received by the brake caliper assembly exceeds a preset threshold value, the brake caliper assembly will be switched from a normal state to an emergency state, wherein the third bushing is in contact with the second bushing in the emergency state.
Further, the first bushing comprises a first ring in contact with the fastener, a second ring sleeved on an outer side of the first ring, and a third ring sleeved on an outer side of the second ring, wherein the first ring protrudes beyond the second ring and the third ring, wherein the first ring and the third ring are both made of a metal material, and the second ring is made of rubber.
Further, the second bushing is provided with a step that is adapted to the first ring.
Further, the second bushing and the third bushing are both made of a metal material.
Further, the compact brake caliper assembly with a new suspension mode further comprises a fourth bushing in contact with the fastener, wherein the fourth bushing is externally sleeved with both the first bushing and the second bushing, wherein the fourth bushing has a hollow cylindrical structure, and the fourth bushing is made of a metal material.
Further, an arc-shaped surface is provided at an end of the second bushing, said end being in contact with the fourth bushing.
Further, a plurality of grooves are provided in a lateral wall of the fourth bushing which is close to the fastener, wherein an O-ring or O-rings is/are  arranged in the grooves.
Further, the first housing and the second housing are integrally formed.
Further, a direction of the opening is parallel to a length direction of the second housing.
The beneficial effects achieved by the technical solutions of the present invention are as follows:
The compact brake caliper assembly of the present invention can change the bearing capacity of the first bushing by changing a distance between the second bushing and the third bushing, so that the first bushing does not bear all braking force. By way of an organic combination of a plurality of protective bushings, it is possible to not only achieve a shock absorption effect, but also ensure that the first bushing is not prone to damage.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to more explicitly explain the technical solution in the embodiments of the present invention, a brief introduction will be given below for the accompanying drawings required to be used in the description of the embodiments. It is apparent that, the accompanying drawings illustrated as follows are merely some of the embodiments of the present invention. For those skilled in the art, they may also obtain other accompanying drawings according to such accompanying drawings without involving any inventive activities.
FIG. 1 is a top view of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
FIG. 2 is an enlarged view of a connection mode of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
FIG. 3 is a perspective view of a housing of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
FIG. 4 is a perspective view of the compact brake caliper assembly with a new  suspension mode provided in an embodiment of the present invention.
FIG. 5 is a perspective view of a second bushing of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
FIG. 6 is a perspective view of a third bushing of the compact brake caliper assembly with a new suspension mode provided in an embodiment of the present invention.
Reference signs include: 1-caliper body, 2-housing, 21-first housing, 22-second housing, 3-bogie, 4-opening, 5-fastener, 6-first bushing, 61-first ring, 62-second ring, 63-third ring, 7-second bushing, 8-third bushing, 9-fourth bushing, 10-O-ring.
DETAILED DESCRIPTION OF EMBODIMENTS
In order to allow those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be explicitly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiments are merely some of the embodiments of the present invention, rather than all the embodiments thereof. On the basis of the embodiments of the present invention, all the other embodiments which can be obtained by a person skilled in the art without involving any inventive activities fall into the protection scope of the present invention.
It should be noted that, the terms “first” , “second” and the like in the specification and claims of the present invention and the above-described accompanying drawings are used to distinguish similar objects, but not necessarily used to describe a particular order or sequential order. It is to be understood that said terms thus used may be interchanged as appropriate, such that the embodiments of the present invention described here can be implemented in a sequence other than those illustrated or described here. In addition, the terms “comprises” and “includes” as well as any deformation  thereof are intended to cover non-exclusive inclusions. For example, the processes, methods, systems, products, or devices that contain a series of steps or units are not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.
In one embodiment of the present invention, a compact brake caliper assembly with a new suspension mode is provided. Regarding the specific structure, referring to FIGS. 3 and 4, the brake caliper assembly comprises a caliper body 1 and a housing 2 (the housing 2 is a main component of the caliper body) connected to the caliper body 1, wherein the housing 2 is connected to the bogie 3. The housing 2 comprises a first housing 21 and a second housing 22 connected to the first housing 21, wherein the first housing 21 is arranged above the second housing 22. The specific structure of the first housing 21 is as follows: referring to FIG. 3, the first housing 21 preferably has a cubic structure, and the first housing 21 is provided with at least one opening 4 in which a fastener 5 is mounted to fixedly connect the first housing 21 to the bogie 3. The direction of the opening 4 is parallel to a length direction of the second housing 22. In the main view direction shown in FIG. 3, the opening 4 extends along a left-right direction. The number of the openings may be two, three, four or more as necessary. Due to the structural design of the housing, a connection between the housing and the parts inside the caliper body remains unchanged and also a connection between the housing and the bogie is converted into a transverse installation, so that it is possible to omit the original caliper hanger or the like, thereby reducing the installation space occupied by the caliper assembly and a distance from a wheel to an installation center.
The fastener is preferably a bolt assembly, and the fastener 5 provided within the opening is externally sleeved with at least one protective bushing, wherein the protective bushing has a hollow cylindrical structure. The protective bushing comprises first bushings 6 arranged at both ends of the fastener 5, wherein a second bushing 7 is provided between the two first bushings 6, and the two first  bushings are generally configured to bear a common load. Further, a predetermined distance is maintained between two sides of the first housing 21 which are close to the bogie and the bogie respectively, and the middle of the bogie has a space for accommodating the first housing. After assembly, there is a certain gap between the housing and the bogie so as to ensure that the caliper assembly can swing leftwards and rightwards relative to the bogie, and can return to an initial centering position by means of the two first bushings after swinging.
The specific structure of the first bushing 6 is as follows: the first bushing 6 includes a first ring 61 which is in contact with the fastener 5, a second ring 62 sleeved on an outer side of the first ring 61, and a third ring 63 sleeved on an outer side of the second ring 62. The first ring 61 and the third ring 63 are both made of a metal material, which is preferably copper or steel, and the second ring 62 is made of rubber, so that the first bushing 6 is conveniently shaped and is not prone to damage. The first ring 61 protrudes beyond the second ring 62 and the third ring 63. That is, a horizontal plane where the first ring 61 is situated is higher than a horizontal plane where the second ring 62 and the third ring 63 are situated. The second bushing 7 is provided with a step that is adapted to the first ring 61, as shown in FIG. 5, so that the second bushing 7 and the two first bushings 6 firmly cooperate, thereby preventing loosening, and achieving a positioning function facilitating convenient installation.
In one embodiment of the present invention, the number of the openings is two, and the number of the protective bushing is four. The specific structure of the protective bushing is shown in Figs. 1 and 2. The outer side of the second bushing 7 is sleeved with a third bushing 8, and the third bushing 8 is in contact with a lateral wall of the opening 4, wherein a diameter of the third bushing 8 is greater than a diameter of the second bushing 7. The second bushing 7 and the third bushing 8 are preferably made of a metal material, which is preferably copper or steel. In a normal state (the normal state means that an external force received by the brake caliper assembly is within a preset threshold range) , there is a preset distance a between the second bushing 7 and the third bushing 8, wherein the  distance between the second bushing 7 and the third bushing 8 corresponds to a compression amount of the first bushing, so that the bearing capacity of the first bushing can be changed by changing the value of the distance a, and consequently the first bushing does not bear all braking force. The second bushing 7 and the third bushing 8 are generally configured to bear a load under emergency circumstances. Once a load exceeds a common bearing capacity and the external force received by the brake caliper assembly exceeds a preset threshold, the brake caliper assembly will be switched from a normal state to an emergency state. In the emergency state, the second bushing 7 is in contact with the third bushing 8, so that the second bushing 7 and the third bushing 8 bear a main part of the load and play a main load-bearing role. By way of an organic combination of the first bushing, the second bushing and the third bushing, it is possible to not only achieve a shock absorption effect, but also ensure that the protective bushing is not prone to damage.
Preferably, the outer side of the fastener 5 provided within the opening is sleeved with a fourth bushing 9, wherein the fourth bushing 9 is externally sleeved with the protective bushing. The fourth bushing 9 has a hollow cylindrical structure. The fourth bushing 9 is made of a metal material, and the fourth bushing 9 is configured to protect the bolt and produce a sealing effect. A plurality of grooves are provided in a lateral wall of the fourth bushing 9, said lateral wall being close to the fastener 5, wherein in the grooves respectively an O-ring in contact with the fastener is provided, and the O-ring produces a sealing effect.
Preferably, an arc-shaped surface is provided at an end of the second bushing 7, said end being in contact with the fourth bushing 9, as shown in FIG. 6. The circular arc surface on the second bushing 7 is mainly intended to ensure that the caliper assembly can swing leftwards and rightwards relative to the bogie under emergency circumstances. The radius of the circular arc is determined by a swinging angle as required.
The above descriptions only relate to the preferred embodiments of the present invention, but are not intended to limit present invention. Any  modification, equivalent substitution, improvement, or the like made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

  1. A compact brake caliper assembly with a new suspension mode, characterized by comprising a caliper body (1) and a housing (2) connected to the caliper body (1) , said housing (2) including a first housing (21) and a second housing (22) arranged below the first housing (21) , wherein the first housing (21) is connected to the bogie (3) ;
    the first housing (21) is provided with at least one opening (4) in which a fastener (5) is mounted to fixedly connect the first housing (21) to the bogie (3) ; the fastener (5) provided within the opening (4) is externally sleeved with at least one protective bushing, wherein the protective bushing has a hollow cylindrical structure;
    the protective bushing includes first bushings (6) arranged at both ends of the fastener (5) , wherein a second bushing (7) is arranged between the two first bushings (6) , and the outer side of the second bushing (7) is sleeved with a third bushing (8) , and the third bushing (8) is in contact with a lateral wall of the opening (4) , wherein there is a preset distance between the third bushing (8) and the second bushing (7) in a normal state.
  2. Compact brake caliper assembly with a new suspension mode according to claim 1, characterized in that when an external force received by the brake caliper assembly exceeds a preset threshold value, the brake caliper assembly will be switched from the normal state to an emergency state, wherein the third bushing (8) is in contact with the second bushing (7) in the emergency state.
  3. Compact brake caliper assembly with a new suspension mode according to claim 1, characterized in that the first bushing (6) includes a first ring (61) in contact with the fastener (5) , a second ring (62) sleeved on an outer side of the first ring (61) , and a third ring (63) sleeved on an outer side of the second ring (62) , wherein the first ring (61) protrudes beyond the second ring (62) and the third ring (63) , wherein the first ring (61) and the third ring (63) are both made of a metal material, and the second ring (62) is made of rubber.
  4. Compact brake caliper assembly with a new suspension mode according to claim 3, characterized in that the second bushing (7) is provided with a step that is adapted to the first ring (61) .
  5. Compact brake caliper assembly with a new suspension mode according to claim 1, characterized in that the second bushing (7) and the third bushing (8) are both made of a metal material.
  6. Compact brake caliper assembly with a new suspension mode according to claim 1, characterized in that the compact brake caliper assembly further comprises a fourth bushing (9) in contact with the fastener (5) , wherein the fourth bushing (9) is externally sleeved with both the first bushing (6) and the second bushing (7) , wherein the fourth bushing (9) has a hollow cylindrical structure, and the fourth bushing (9) is made of a metal material.
  7. Compact brake caliper assembly with a new suspension mode according to claim 6, characterized in that an arc-shaped surface is provided at an end of the second bushing (7) , said end being in contact with the fourth bushing (9) .
  8. Compact brake caliper assembly with a new suspension mode according to claim 6, characterized in that a plurality of grooves are provided in a lateral wall of the fourth bushing (9) which is close to the fastener (5) , wherein an O-ring (10) or O-rings is/are arranged in the grooves.
  9. Compact brake caliper assembly with a new suspension mode according to claim 1, characterized in that the first housing (21) and the second housing (22) are integrally formed.
  10. Compact brake caliper assembly with a new suspension mode according to claim 1, characterized in that the direction of the opening (4) is parallel to a length direction of the second housing (21) .
PCT/CN2021/091545 2020-04-30 2021-04-30 Connection of a compact brake caliper assembly to a bogie WO2021219133A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202020702648.4U CN211969456U (en) 2020-04-30 2020-04-30 Compact braking clamp assembly with novel suspension mode
CN202020702648.4 2020-04-30

Publications (1)

Publication Number Publication Date
WO2021219133A1 true WO2021219133A1 (en) 2021-11-04

Family

ID=73344966

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/091545 WO2021219133A1 (en) 2020-04-30 2021-04-30 Connection of a compact brake caliper assembly to a bogie

Country Status (2)

Country Link
CN (1) CN211969456U (en)
WO (1) WO2021219133A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989126A (en) * 1973-09-28 1976-11-02 Knorr-Bremse Gmbh Resilient railway disc brake pivotal mounting
US20190389496A1 (en) * 2017-02-02 2019-12-26 Faiveley Transport Witten Gmbh Running gear for a rail vehicle, and bearing element for a running gear

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989126A (en) * 1973-09-28 1976-11-02 Knorr-Bremse Gmbh Resilient railway disc brake pivotal mounting
US20190389496A1 (en) * 2017-02-02 2019-12-26 Faiveley Transport Witten Gmbh Running gear for a rail vehicle, and bearing element for a running gear

Also Published As

Publication number Publication date
CN211969456U (en) 2020-11-20

Similar Documents

Publication Publication Date Title
US3731913A (en) Springs
CN104163180B (en) Rail wagon bogie single-stage shaft housing hanging and positioning device
AU2010353130A1 (en) Full side bearing bearing-type railway truck bogie
EP2660120B1 (en) Railway vehicle bogie
US4438703A (en) Primary suspension system for a railway car
CN103350615A (en) Non-pneumatic and safely combined wheel
WO2021219133A1 (en) Connection of a compact brake caliper assembly to a bogie
CN204432766U (en) Steering knuckle structure of car
CN109094598B (en) Rail transit vehicle and hoisting and hanging composite bogie thereof
CA2945287C (en) Side bearing for railway car truck
JP2000280903A (en) Axle box support device for railway rolling stock
JP2002067942A (en) Rolling stock body supporting mechanism for single axle bogie, bogie for railway rolling stock with same, and railway rolling stock with the bogie
EP3636510A1 (en) Method and device for improving comprehensive performance of elastic component of axleless bogie system
CN201872564U (en) Automobile balanced suspension assembly in multi-coupling structure
CN211943325U (en) Compact braking clamp assembly convenient to connect and fasten
CN107891871B (en) Connecting mechanism for suspension type air monorail traffic system
CN105564175A (en) Heavy truck rear suspension system and heavy truck
CN221293453U (en) Integrated disc brake rear axle mechanism
CN212796410U (en) Forklift drive axle housing
CN113547878B (en) Elastic wheel for rail transit
CN216233916U (en) Bogie splicing device
CN212685142U (en) Balance shaft housing for mine car with reinforcing ribs
KR100463393B1 (en) Torsion free brake shoe holder hanger
CN113696931B (en) Railway freight car coupler strutting arrangement
CN215041914U (en) Triangular arm

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21722361

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21722361

Country of ref document: EP

Kind code of ref document: A1