AU2020281020B2 - Braking device and railway vehicle - Google Patents

Braking device and railway vehicle Download PDF

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Publication number
AU2020281020B2
AU2020281020B2 AU2020281020A AU2020281020A AU2020281020B2 AU 2020281020 B2 AU2020281020 B2 AU 2020281020B2 AU 2020281020 A AU2020281020 A AU 2020281020A AU 2020281020 A AU2020281020 A AU 2020281020A AU 2020281020 B2 AU2020281020 B2 AU 2020281020B2
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AU
Australia
Prior art keywords
rod
support plate
regulating member
shim
braking device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
AU2020281020A
Other versions
AU2020281020A1 (en
Inventor
Baohua Liu
Yi Liu
Hanjiang LUO
Junwei Luo
Fuying Mao
Bo Ning
Jianhong Shen
Yanfei Shen
Zhiyong Song
Kaien Wang
Yungui Wang
Bali XIAO
Chen XIAO
Weiyuan Xiao
Jianping Yang
Maiyun YIN
Guangcai ZHANG
Ji Zhu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meishan CRRC Brake Science and Technology Co Ltd
Original Assignee
Meishan CRRC Brake Science and Technology Co Ltd
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Publication of AU2020281020A1 publication Critical patent/AU2020281020A1/en
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Publication of AU2020281020B2 publication Critical patent/AU2020281020B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H13/00—Actuating rail vehicle 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/62—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
    • F16D65/66—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play with screw-thread and nut

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

Abstract

ON120017904AU Abstract The embodiments of the present disclosure provide a braking device and a railway vehicle, relating to the field of rail traffic, and the braking device comprises a first beam, a second beam, a first rod, a second rod, and a regulating member, wherein the first rod is in connection with the first beam, the second rod is in connection with the second beam, the first rod and the second rod are simultaneously in thread fit with the regulating member, and the gap between a first brake shoe and a wheel hub as well as the gap between a second brake shoe and the wheel hub are changed, when the regulating member is rotated relative to the first rod and the second rod. ON120017904AU

Description

ON120017904AU
Braking Device and Railway Vehicle
Technical Field The present disclosure relates to the field of rail traffic, and specifically to a braking device and a railway vehicle.
Background Railway vehicles are usually braked by braking devices, wherein the braking device comprises a unit brake cylinder, a main beam, an auxiliary beam, and a brake shoe, wherein the main beam and the auxiliary beam both respectively have a brake shoe mounted thereon, the piston rod of the brake cylinder can drive the main beam and the auxiliary beam to move, such that the brake shoes come into contact with a wheel hub, hereby achieving the braking effect. During the braking process, the brake shoe will rub against the wheel hub, and after a long time of use, the brake shoe will wear out, leading to an increased distance between the brake shoe and the wheel hub. At this moment, in order to ensure that the brake shoe can still contact the wheel hub during braking, it is necessary to control the piston rod of the brake cylinder to extend out at a longer length, which will cause an instable state of the braking device when performing brake, causing a potential safety hazard.
Reference to any prior art in the specification is not an acknowledgement or suggestion that this prior art forms part of the common general knowledge in any jurisdiction or that this prior art could reasonably be expected to be combined with any other piece of prior art by a skilled person in the art.
By way of clarification and for avoidance of doubt, as used herein and except where the context requires otherwise, the term "comprise" and variations of the term, such as "comprising", "comprises" and "comprised", are not intended to exclude further additions, components, integers or steps.
Summary The present disclosure provides a braking device and a railway vehicle, which can solve the technical problem of how to improve the instable state of the braking device when performing brake, caused by an increased distance between the brake shoe and the wheel hub. Embodiments of the present disclosure may be implemented as follows.
A first aspect of the present invention provides a braking device, comprising: a first beam, a second beam, a first rod, a second rod, and a regulating member, wherein the first beam is configured for mounting a first brake shoe, the second beam is configured for mounting a second brake shoe, the first beam and the second beam are arranged with an interval therebetween; one end of the first rod is in connection with the first beam, while the other end of
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the first rod is in thread fit with the regulating member; one end of the second rod is in connection with the second beam, while the other end of the second rod is in thread fit with the regulating member; and the regulating member is configured to make, when rotating relative to the first rod and the second rod, the first rod and the second rod move towards or away from each other so as to drive the first beam and the second beam to move towards or away from each other, hereby changing the gap between the first brake shoe and a wheel hub as well as the gap between the second brake shoe and the wheel hub, wherein the braking device further comprises a brake cylinder and a pivot lever, wherein the pivot lever is in rotatable connection simultaneously with the piston rod of the brake cylinder, the first beam, and the first rod; and the brake cylinder is configured to drive via the pivot lever the first beam to move and to drive via the pivot lever the first rod to move,
wherein an end of the first beam is provided with a second fork-shaped part, which is equipped with a third support plate and a fourth support plate arranged opposite to each other, wherein a mounting space is formed between the third support plate and the fourth support plate, the pivot lever is at least partially mounted in the mounting space, and the pivot lever is in rotatable connection simultaneously with the third support plate and the fourth support plate, and the first rod penetrates the mounting space and is in rotatable connection with the pivot lever,
wherein one side of the first beam is equipped with an accommodating space configured for the brake cylinder to be placed; and a side of the fourth support plate close to the mounting space is provided with a second guiding slant configured to contact a side face of the pivot lever, wherein the second guiding slant is inclined downwards with respect to the horizontal plane, and the second guiding slant is located at an end of the fourth support plate close to the accommodating space. Optionally, the first rod is provided with a first threaded segment, the second rod is provided with a second threaded segment, with the turning direction of the first threaded segment being opposite to that of the second threaded segment, and the regulating member is provided with a third threaded segment, wherein the first threaded segment and the second threaded segment are simultaneously in thread fit with the third threaded segment.
Optionally, the first rod is provided with a first threaded segment, the second rod is provided with a second threaded segment, and the regulating member is provided with a third threaded segment and a fourth threaded segment, wherein the first threaded segment is in thread fit with the third threaded segment, and the second threaded segment is in thread fit with the fourth threaded segment,
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wherein the turning direction of the first threaded segment is the same as that of the second threaded segment, and the turning direction of the third threaded segment is opposite to that of the fourth threaded segment. Optionally, the regulating member is sleeve-shaped, and the regulating member is simultaneously sleeved over the first rod and the second rod, wherein the first threaded segment and the second threaded segment are both externally threaded, while the third threaded segment is internally threaded. Optionally, the braking device further comprises a first latch nut and a second latch nut, wherein the first latch nut is in thread fit with the first rod, the second latch nut is in thread fit with the second rod, and the first latch nut and the second latch nut respectively abut against two ends of the regulating member.
Optionally, the braking device further comprises a first shim, the first shim is sleeved over the first rod and is located between the first latch nut and the regulating member, and both sides of the first shim respectively abut against the first latch nut and the regulating member; and/or
the braking device further comprises a second shim, the second shim is sleeved over the second rod and is located between the second latch nut and the regulating member, and both sides of the second shim respectively abut against the second latch nut and the regulating member.
Optionally, the side of the first shim close to the regulating member is provided with at least one first protrusion, and the side of the regulating member close to the first shim is provided with at least one first groove, into which the at least one first protrusion is embedded respectively; and/or the side of the second shim close to the regulating member is provided with at least one second protrusion, and the side of the regulating member close to the second shim is provided with at least one second groove, into which the second protrusion is embedded respectively.
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Optionally, the at least one first protrusion is multiple and the at least one first groove is multiple, with the former and the latter being respectively in one-to-one correspondence with each other, wherein the multiple first protrusions are arranged along a circumferential direction of the first shim with an interval therebetween, and the multiple first grooves are arranged along a circumferential direction of the regulating member with an interval therebetween; and/or the at least one second protrusions is multiple and the at least one second grooves is multiple, with the former and the latter being respectively in one-to-one correspondence with each other, the multiple second protrusions are arranged along a circumferential direction of the second shim with an interval therebetween, and the multiple second grooves are arranged along a circumferential direction of the regulating member with an interval therebetween. Optionally, the at least one first protrusion is wedge-shaped, and the thickness of the at least one first protrusion decreases gradually along a first preset direction, wherein the first preset direction is a direction from the end of the at least one first protrusion away from the first shim towards the end of the at least one first protrusion close to the first shim; and/or the at least one second protrusion is wedge-shaped, and the thickness of the at least one second protrusion decreases gradually along a second preset direction, wherein the second preset direction is a direction from the end of the second protrusion away from the second shim towards the end of the second protrusion close to the second shim. Optionally, the braking device further comprises a brake cylinder and a pivot lever, wherein the pivot lever is in rotatable connection simultaneously with the piston rod of the brake cylinder, the first beam, and the first rod; and the brake cylinder is configured to drive via the pivot lever the first beam to move and to drive via the pivot lever the first rod to move. Optionally, the end of the first rod close to the first beam is provided with a first fork-shaped part, which is equipped with a first support plate and a second support plate arranged opposite to each other, and the pivot lever is mounted between the first support plate and the second support plate, and is in rotatable connection simultaneously with the first support plate and the second support plate. Optionally, the braking device further comprises a first mounting sleeve, a second mounting sleeve, and a transmission shaft; the first support plate and the second support plate are respectively provided with a first mounting hole and a second mounting hole; the first mounting sleeve and the second mounting sleeve are respectively inserted within the first mounting hole and
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the second mounting hole; and the transmission shaft successively penetrates the first mounting sleeve, the pivot lever, and the second mounting sleeve. Optionally, the end of the first mounting sleeve close to the second support plate is provided with a first projecting part, which projects from the external wall of the first mounting sleeve along a radial direction of the first mounting sleeve, and abuts against the side of the first support plate close to the second support plate; and the end of the second mounting sleeve close to the first support plate is provided with a second projecting part, which projects from the external wall of the second mounting sleeve along a radial direction of the second mounting sleeve, and abuts against the side of the second support plate close to the first support plate. Optionally, two sides of the pivot lever respectively abut against the first projecting part and the second projecting part. Optionally, an end of the first beam is provided with a second fork-shaped part, which is equipped with a third support plate and a fourth support plate arranged opposite to each other, wherein a mounting space is formed between the third support plate and the fourth support plate, the pivot lever is at least partially mounted in the mounting space, and the pivot lever is in rotatable connection simultaneously with the third support plate and the fourth support plate, and the first rod penetrates the mounting space and is in rotatable connection with the pivot lever. Optionally, one side of the first beam is equipped with an accommodating space for the brake cylinder to be placed; the side of the third support plate close to the mounting space is provided with a first guiding slant configured to contact a side face of the pivot lever, wherein the first guiding slant is inclined upwards with respect to a horizontal plane, and the first guiding slant is located at the end of the third support plate close to the accommodating space; and/or the side of the fourth support plate close to the mounting space is provided with a second guiding slant configured to contact a side face of the pivot lever, wherein the second guiding slant is inclined downwards with respect to the horizontal plane, and the second guiding slant is located at the end of the fourth support plate close to the accommodating space. Embodiments of the present disclosure further provides a railway vehicle, which comprises the braking device as mentioned above and has all functions of this braking device. Compared with the prior art, the beneficial effects of the embodiments of the present disclosure comprise for example the follows.
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Embodiment of the present disclosure provide a braking device, comprising: a first beam, a second beam, a first rod, a second rod, and a regulating member, wherein a first brake shoe is mounted on the first beam, a second brake shoe is mounted on the second beam, and the first beam and the second beam are arranged with an interval therebetween; one end of the first rod is in connection with the first beam, while the other end of the first rod is in thread fit with the regulating member; and one end of the second rod is in connection with the second beam, while the other end of the second rod is in thread fit with the regulating member. When the regulating member is rotated relative to the first rod and the second rod, the first rod and the second rod can move towards or away from each other, hereby driving the first beam and the second beam to move towards or away from each other. During actual use, in case that the gap between the first brake shoe and the wheel hub increases and/or the gap between the second brake shoe and the wheel hub increases, the regulating member is rotated, and the first beam and the second beam can be driven respectively by the first rod and the second rod, such that the first brake shoe moves closer to the wheel hub, and such that the second brake shoe moves closer to the wheel hub. In this way, the gap between the first brake shoe and the wheel hub can be effectively reduced, and the gap between the second brake shoe and the wheel hub can be reduced as well. Therefore, in the present embodiment, even if the first brake shoe and the second brake shoe are worn, this braking device can, when performing brake, still effectively achieve the braking effect, maintain the overall stability of this braking device, and reduce the risk of occurrence of potential safety hazards, without increasing the length of the piston rod of the brake cylinder extending out of the cylinder block. Embodiments of the present disclosure further provide a railway vehicle, which comprises the preceding braking device and has all functions of this device. The railway vehicle also has the beneficial effects of maintaining the stability of the braking device and reducing the risk of occurrence of potential safety hazards. Brief Description of the Drawings In order to more clearly describe the technical solutions of the embodiments of the present disclosure, the drawings required to be used in the embodiments will be simply presented below; and it shall be understood that the following drawings merely show certain embodiments of the present disclosure, and thus should not be construed as limiting the scope thereof, and for a person ordinarily skilled in the art, further relevant drawings could be obtained according to these drawings without inventive efforts. Fig. 1 shows a structural schematic diagram of a braking device provided in embodiments of the present disclosure;
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Fig. 2 is a structural schematic diagram showing the interconnection of a first rod, a second rod, and a regulating member provided in embodiments of the present disclosure; Fig. 3 shows a structural schematic diagram of a regulating member provided in embodiments of the present disclosure; Fig. 4 shows a structural schematic diagram of a first shim provided in embodiments of the present disclosure; Fig. 5 shows a structural schematic diagram of the structure shown in Fig. 2 after removal of a first mounting sleeve and a second mounting sleeve; Fig. 6 shows a structural schematic diagram of a first mounting sleeve provided in embodiments of the present disclosure; Fig. 7 shows a structural schematic diagram of a second fork-shaped part provided in embodiments of the present disclosure; and Fig. 8 shows a sectional view in the A-A viewing angle in Fig. 7. Reference signs: 1-braking device; 11-brake cylinder; 111-piston rod; 112 cylinder block; 12-first beam; 13-second beam; 14-first brake shoe; 15-second brake shoe; 16-first rod; 17-second rod; 18-regulating member; 181-first groove; 19-first latch nut; 20-second latch nut; 21-first shim; 22-second shim; 23-first protrusion; 24-pivot lever; 25-first fork-shaped part; 251-first support plate; 2511-first mounting hole; 252-second support plate; 2521-second mounting hole; 26-first mounting sleeve; 261-first projecting part; 27-second mounting sleeve; 271-second projecting part; 28-transmission shaft; 29-second fork-shaped part; 291-third support plate; 2911-first guiding slant; 292-fourth support plate; 2921-second guiding slant; 293-mounting space; and -accommodating space. Detailed Description of the Embodiments In order to make the objects, the technical solutions and the advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and comprehensively described below with reference to the attached figures in the embodiments of the present disclosure. Obviously, the described embodiments are merely some of the embodiments of the present disclosure, but not all the embodiments. Generally, the assemblies of the embodiments of the present disclosure that are described and shown here in the figures may be arranged and designed according to various configurations. Thus, the following detailed description of the embodiments of the present disclosure that are provided in the figures merely represents selected embodiments of the present disclosure, rather than being intended to limit the scope of the present disclosure for which protection is sought. Any other
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embodiments, obtained by a person ordinarily skilled in the art without inventive efforts based on the embodiments in the present disclosure, shall fall within the scope of protection of the present disclosure. It shall be noted that similar reference signs and letters represent similar items in the following figures, thus, once a certain item is defined in one figure, no further definition and explanation of this item is necessary in the subsequent figures. In the description of the present disclosure, it shall be clarified that orientation or position relationships indicated by terms such as "central", "upper", "lower", "left","right","vertical","horizontal", "inner", and"outer", ifused, are orientation or position relationships shown based on the figures, or orientation or position relationships in which the product of this disclosure is conventionally placed during use, merely for the purpose of facilitating the description of the present disclosure and for simplifying the description, rather than indicating or implying that a specified device or element must have a specific orientation, and be constructed and operated in a certain orientation, and therefore cannot be construed as limiting the present disclosure. In addition, terms such as "first", "second", and "third", if used, are used merely for purpose of differentiated description, and cannot be construed as indicating or implying to have importance in relativity. In addition, terms such as "horizontal", "vertical", and "pendulous", if used, do not mean that the components are required to be absolutely horizontal or pendulous, on the contrary, they may be slightly inclined. For example, the term "horizontal" only means that the direction thereof is more horizontal compared to the term "vertical", rather than indicating that this structure must be completely horizontal, on the contrary, this structure may be slightly inclined. In the description of the present disclosure, it shall be further clarified that, unless otherwise expressly specified and defined, terms such as "provide", "mount", "connect", and "connection", if used, shall be construed in a broad sense. For example, it may be fixed connection, or detachable connection, or integrated connection; it may be mechanical connection, or electrical connection; or it may be direct connection, or indirect connection via an intermediate, or inner communication between two elements. For a person ordinarily skilled in the art, the specific meanings of the above-mentioned terms in the present disclosure could be construed in accordance with specific circumstances. It shall be clarified that the features in the embodiments of the present disclosure may be combined with each other without conflicts.
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Referring to Fig. 1, the present embodiment provides a railway vehicle, comprising a vehicle body, a braking device 1, and a wheel hub, wherein the braking device 1 and the wheel hub are both mounted on the vehicle body, and the braking device 1 is able to perform brake on the wheel hub. Specifically, the braking device 1 comprises a brake cylinder 11, a first beam 12, a second beam 13, a first brake shoe 14, and a second brake shoe 15, wherein the first brake shoe 14 is mounted on the first beam 12, the second brake shoe 15 is mounted on the second beam 13, and the piston rod 111 of the brake cylinder 11 is in transmissive connection simultaneously with the first beam 12 and the second beam 13. During actual use, when the brake cylinder 11 is activated, the length of the piston rod 111 of the brake cylinder 11 extending out of the cylinder block 112 increases, which drives the first beam 12 and the second beam 13 to move simultaneously, such that the first brake shoe 14 and the second brake shoe respectively act on the inner side and the outer side of the wheel hub, so as to achieve the braking effect on the wheel hub. It shall be clarified that the first brake shoe 14 and the second brake shoe 15 can simultaneously contact the inner side and the outer side of the wheel hub. Alternatively, the first brake shoe 14 firstly contacts the inner side of the wheel hub, and the second brake shoe 15 then contacts the outer side of the wheel hub. Alternatively, the second brake shoe 15 firstly contacts the outer side of the wheel hub, and the first brake shoe 14 then contacts the inner side of the wheel hub. It could be understood that friction would arise between the first brake shoe 14 or the second brake shoe 15 and the wheel hub, when performing a braking operation; and after a period of use, the first brake shoe 14 and the second brake shoe 15 would be obviously worn. In this way, it would cause an increased gap between the first brake shoe 14 and the inner side of the wheel hub, and cause an increased gap between the second brake shoe 15 and the outer side of the wheel hub. At this moment, if it is desired to achieve the original braking effect, the length of the piston rod 111 of the brake cylinder 11 extending out of the cylinder block 112 should be controlled to increase, in this way, it may cause relatively poor overall stability of the braking device 1, causing a potential safety hazard. In view of this, in the present embodiment, this braking device 1 further comprises a first rod 16, a second rod 17, and a regulating member 18; the first beam 12 and the second beam 13 are arranged with an interval therebetween; one end of the first rod 16 is in connection with the first beam 12, while the other end of the first rod 16 is in thread fit with the regulating member 18; and one end of the second rod 17 is in connection with the second beam 13, while the other end of the second rod 17 is in thread fit with the regulating member 18. When the regulating member 18 is rotated relative to the first rod 16 and
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the second rod 17, the first rod 16 and the second rod 17 can move towards or away from each other, hereby driving the first beam 12 and the second beam 13 to move towards or away from each other. During actual use, in case that the gap between the first brake shoe 14 and the inner side of the wheel hub increases and/or the gap between the second brake shoe 15 and the outer side of the wheel hub increases, the regulating member 18 can be rotated, and the first beam 12 and the second beam 13 can be driven to move away from each other when the first rod 16 and the second rod 17 move away from each other, such that the first brake shoe 14 moves closer to the wheel hub, and such that the second brake shoe 15 moves closer to the wheel hub. In this way, the gap between the first brake shoe 14 and the wheel hub can be effectively reduced, the gap between the second brake shoe and the wheel hub can be reduced as well. Therefore, in the present embodiment, even if the first brake shoe 14 and the second brake shoe 15 are worn, this braking device 1 can, when performing brake, still effectively realize brake, accordingly can maintain the overall stability of this braking device 1 and reduce the risk of occurrence of potential safety hazards, without increasing the length of the piston rod 111 of the brake cylinder 11 extending out of the cylinder block 112. Naturally, during actual use, in case that the gap between the first brake shoe 14 and the inner side of the wheel hub decreases and/or the gap between the second brake shoe 15 and the outer side of the wheel hub decreases, the regulating member 18 can also be rotated, and the first beam 12 and the second beam 13 can be driven to move towards each other when the first rod 16 and the second rod 17 move towards each other, such that the first brake shoe 14 moves away from the wheel hub, and such that the second brake shoe 15 moves away from the wheel hub. Specifically, in the present embodiment, the first rod 16 is provided with a first threaded segment, the second rod 17 is provided with a second threaded segment, with the turning direction of the first threaded segment being opposite to that of the second threaded segment, and the regulating member 18 is provided with a third threaded segment, wherein the first threaded segment and the second threaded segment are simultaneously in thread fit with the third threaded segment. In this way, when the regulating member 18 is rotated, the effect of moving the first rod 16 and the second rod 17 towards or away from each other can be achieved. It shall be clarified that in the present embodiment, the regulating member 18 is sleeve-shaped, and the regulating member 18 is simultaneously sleeved over the first rod 16 and the second rod 17, wherein the first threaded segment and the second threaded segment are both externally threaded, while the third threaded segment is internally threaded.
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It shall be clarified that in other embodiments, the regulating member 18 may also be rod-shaped, the first rod 16 and the second rod 17 are each provided with a threaded hole, and the first rod 16 and the second rod 17 are both sleeved over the regulating member 18, that is to say, the first threaded segment and the second threaded segment are both internally threaded, while the third threaded segment is externally threaded. It shall be clarified that in other embodiments, a fourth threaded segment may also be additionally provided on the regulating member 18, at this moment, the first threaded segment is in thread fit with the third threaded segment, and the second threaded segment is in thread fit with the fourth threaded segment, wherein the turning direction of the first threaded segment is the same as that of the second threaded segment, while the turning direction of the third threaded segment is opposite to that of the fourth threaded segment. In this way, when the regulating member 18 is rotated, the effect of moving the first rod 16 and the second rod 17 towards or away from each other can also be achieved. Certainly, during actual use, it is also possible that the first threaded segment and the second threaded segment are both externally threaded, while the third threaded segment and the fourth threaded segment are both internally threaded. Alternatively, it is also possible that the first threaded segment and the second threaded segment are both internally threaded, while the third threaded segment and the fourth threaded segment are both externally threaded. Alternatively, it is also possible that the first threaded segment and the fourth threaded segment are both externally threaded, while the second threaded segment and the third threaded segment are both internally threaded. Alternatively, it is also possible that the first threaded segment and the fourth threaded segment are both internally threaded, while the second threaded segment and the third threaded segment are both externally threaded. Referring to Fig. 2, in the present embodiment, the braking device 1 further comprises a first latch nut 19 and a second latch nut 20, wherein the first latch nut 19 is in thread fit with the first rod 16, the second latch nut 20 is in thread fit with the second rod 17, and the first latch nut 19 and the second latch nut 20 respectively abut against both ends of the regulating member 18. It could be understood that the first latch nut 19 can prevent the regulating member 18 from being separated from the first rod 16, and the second latch nut 20 can prevent the regulating member 18 from being separated from the second rod 17, when the first latch nut 19 and the second latch nut 20 have been respectively mounted on the first rod 16 and the second rod 17. Certainly, if it is necessary to rotate the regulating member 18, the first latch nut 19 and the second latch nut 20 can be loosened before the rotation. After the completion of the rotation of the regulating member 18, the first latch nut 19 and the second latch nut 20 are made to abut against both ends of the regulating member 18 again.
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Referring to Fig. 2, in the present embodiment, the braking device 1 further comprises a first shim 21 and a second shim 22, wherein the first shim 21 is sleeved over the first rod 16, the first shim 21 is located between the first latch nut 19 and the regulating member 18, and both sides of the first shim 21 respectively abut against the first latch nut 19 and the regulating member 18. The second shim 22 is sleeved over the second rod 17, the second shim 22 is located between the second latch nut 20 and the regulating member 18, and both sides of the second shim 22 respectively abut against the second latch nut 20 and the regulating member 18. It could be understood that the first latch nut 19 presses against the first shim 21, and the first shim 21 can prevent loosening between the first latch nut 19 and the regulating member 18. Similarly, the second latch nut 20 presses against the second shim 22, and the second shim 22 can prevent loosening between the second latch nut 20 and the regulating member 18. It shall be clarified that in other embodiments, it is also possible that only a first shim 21 is provided between the first latch nut 19 and the regulating member 18. Alternatively, only a second shim 22 is provided between the second latch nut 20 and the regulating member 18. Referring to Figs. 2-4, in the present embodiment, the side of the first shim 21 close to the regulating member 18 is provided with a first protrusion 23, and the side of the regulating member 18 close to the first shim 21 is provided with a first groove 181, wherein the first protrusion 23 is embedded in the first groove 181. In this way, the first shim 21 would not easily be rotated relative to the regulating member 18, which can further prevent loosening between the first latch nut 19 and the regulating member 18. Similarly, in the present embodiment, the side of the second shim 22 close to the regulating member 18 is provided with a second protrusion (not shown in the figures), and the side of the regulating member 18 close to the second shim 22 is provided with a second groove (not shown in the figures), wherein the second protrusion is embedded in the second groove. In this way, the second shim 22 would not easily be rotated relative to the regulating member 18, which can further prevent loosening between the second latch nut 20 and the regulating member 18. It shall be clarified that in the present embodiment, the second shim 22 has the same structure as the first shim 21, and as to the specific structure of the second shim 22, reference can be made to the structure shown in Fig. 4. Correspondingly, in the present embodiment, the second groove has the same structure as the first groove 181, and as to the specific structure of the second groove, reference can be made to the structure of the first groove 181 in Fig. 3.
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It shall be clarified that in other embodiments, it is also possible that only a first protrusion 23 is provided on the first shim 21. Alternatively, only a second protrusion is provided on the second shim 22. With reference to Fig. 4, in the present embodiment, there are multiple first protrusions 23 and multiple first grooves 181 which are respectively in one-to-one correspondence with each other, the multiple first protrusions 23 are arranged along a circumferential direction of the first shim 21 with an interval therebetween, and the multiple first grooves 181 are arranged along a circumferential direction of the regulating member 18 with an interval therebetween. In this way, each first protrusion 23 is embedded in a corresponding first groove 181, and the first shim 21 can be positioned in the circumferential direction of the regulating member 18 so as to prevent the first shim 21 from rotating relative to the regulating member 18. Similarly, in the present embodiment, there are multiple second protrusions and multiple second grooves which are respectively in one-to-one correspondence with each other, the multiple second protrusions are arranged along a circumferential direction of the second shim 22 with an interval therebetween, and the multiple second grooves are arranged along a circumferential direction of the regulating member 18 with an interval therebetween. In this way, each second protrusion is embedded in a corresponding second groove, and the second shim 22 can be positioned in the circumferential direction of the regulating member 18 so as to prevent the second shim 22 from rotating relative to the regulating member 18. It shall be clarified that in other embodiments, it is also possible that there is only one first protrusion 23, and there are multiple second protrusions. Alternatively, there are multiple first protrusions 23, and there is only one second protrusion. It could be understood that the number of the first grooves 181 and the number of the second grooves are also changed after that the number of the first protrusions 23 and the number of the second protrusions are changed. With reference to Figs. 2 and 4, in the present embodiment, the first protrusion 23 and the second protrusion are both wedge-shaped, the thickness of the first protrusion 23 decreases gradually along a first preset direction, and the thickness of the second protrusion decreases gradually along a second preset direction, wherein the first preset direction is a direction from the end of the first protrusion 23 away from the first shim 21 towards the end of the first protrusion 23 close to the first shim 21. The second preset direction is a direction from the end of the second protrusion away from the second shim 22 towards the end of the second protrusion close to the second shim. In Fig. 2, the first preset direction is the direction indicated by arrow B. The second preset direction is the direction indicated by arrow C.
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It could be understood that the wedge-shaped first protrusion 23 can be more conveniently embedded in the first groove 181, and the wedge-shaped second protrusion can be more conveniently embedded in the second groove. It shall be clarified that in other embodiments, it is also possible that only the first protrusion 23 is provided in a wedge shape. Alternatively, only the second protrusion is provided in a wedge shape. Referring to Fig. 1, in the present embodiment, this braking device 1 further comprises a pivot lever 24, and the pivot lever 24 is in rotatable connection simultaneously with the piston rod 111 of the brake cylinder 11, the first beam 12, and the first rod 16. It shall be clarified that in the present embodiment, when the brake cylinder 11 is activated, the piston rod 111 of the brake cylinder 11 gradually extends out of the cylinder block 112, which firstly drives the pivot lever 24 to rotate relative to the first beam 12; and during the rotating process of the pivot lever 24 relative to the first beam 12, the first rod 16, the regulating member 18, and the second rod 17 are driven to move, and the second rod 17 pushes the second beam 13 to move, such that the second brake shoe 15 abuts against the outer side of the wheel hub. Then, due to the reaction force of the wheel hub on the second brake shoe 15, the second rod 17, the regulating member 18, and the first rod 16 reversely drive the first beam 12 to move via the pivot lever 24, such that the first brake shoe 14 abuts against the inner side of the wheel hub, hereby completing the braking operation. Referring to Figs. 2 and 5, in the present embodiment, the end of the first rod 16 close to the first beam 12 is provided with a first fork-shaped part 25, wherein the first fork-shaped part 25 is equipped with a first support plate 251 and a second support plate 252 arranged opposite to each other, the pivot lever 24 is mounted between the first support plate 251 and the second support plate 252, and the pivot lever 24 is in rotatable connection simultaneously with the first support plate 251 and the second support plate 252. It could be understood that the first support plate 251 and the second support plate 252 can exert a limiting effect on the pivot lever 24, hereby avoiding that the pivot lever 24 is separated from the first fork-shaped part 25 during the rotating process. Referring to Figs. 1, 2, 5 and 6, in the present embodiment, the braking device 1 further comprises a first mounting sleeve 26, a second mounting sleeve 27, and a transmission shaft 28; the first support plate 251 and the second support plate 252 are respectively provided with a first mounting hole 2511 and a second mounting hole 2521; the first mounting sleeve 26 and the second mounting sleeve 27 are respectively inserted within the first mounting hole 2511 and the second mounting hole 2521; and the transmission shaft 28
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successively penetrates the first mounting sleeve 26, the pivot lever 24, and the second mounting sleeve 27. It shall be clarified that in the present embodiment, the pivot lever 24 is in clearance fit with the transmission shaft 28, and the pivot lever 24 can rotate relative to the transmission shaft 28. The transmission shaft 28 is in clearance fit with the first mounting sleeve 26, and the transmission shaft 28 is in clearance fit with the second mounting sleeve 27. In this way, the first rod 16 can rotate relative to the transmission shaft 28. It could be understood that the first mounting sleeve 26 can reduce the friction between the transmission shaft 28 and the internal wall of the first mounting hole 2511, and the second mounting sleeve 27 can reduce the friction between the transmission shaft 28 and the internal wall of the second mounting hole 2521. With reference to Fig. 6, in the present embodiment, the end of the first mounting sleeve 26 close to the second support plate 252 is provided with a first projecting part 261, wherein the first projecting part 261 projects from the external wall of the first mounting sleeve 26 along a radial direction of the first mounting sleeve 26, and the first projecting part 261 abuts against the side of the first support plate 251 close to the second support plate 252. In this way, even if the first mounting sleeve 26 and the first mounting hole 2511 are loosen, the first mounting sleeve 26 would only fall between the first support plate 251 and the second support plate 252, and would not affect normal operations of other devices of the railway vehicle. It shall be clarified that in the present embodiment, the second mounting sleeve 27 has the same structure as the first mounting sleeve 26, and as to the specific structure of the second mounting sleeve 27, reference can be made to the structure of the first mounting sleeve 26 in Fig. 6. Similarly, in the present embodiment, the end of the second mounting sleeve 27 close to the first support plate 251 is provided with a second projecting part 271, wherein the second projecting part 271 projects from the external wall of the second mounting sleeve 27 along a radial direction of the second mounting sleeve 27, the second projecting part 271 abuts against the side of the second support plate 252 close to the first support plate 251. In this way, even if the second mounting sleeve 27 and the second mounting hole 2521 are loosen, the second mounting sleeve 27 would only fall between the first support plate 251 and the second support plate 252, and would not affect normal operations of other devices of the railway vehicle. With reference to Fig. 1, in the present embodiment, both sides of the pivot lever 24 respectively abut against the first projecting part 261 and the second projecting part 271. In this way, compared to the case where both sides of the pivot lever 24 are respectively in direct contact with the first support plate 251
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and the second support plate 252, the contact area is smaller, the friction is smaller, and the pivot lever 24 rotates more smoothly. Furthermore, it shall be clarified that in the present embodiment, since both sides of the pivot lever 24 are respectively in contact with the first projecting part 261 and the second projecting part 271, the manufacturing accuracy of the side of the first support plate 251 close to the second support plate 252 can be lowered, and the manufacturing accuracy of the side of the second support plate 252 close to the first support plate 251 can be lowered. In this way, the manufacturing difficulty can be lowered and the manufacturing efficiency can be improved. Referring to Figs. 1 and 7, in the present embodiment, an end of the first beam 12 is provided with a second fork-shaped part 29, wherein the second fork-shaped part 29 is equipped with a third support plate 291 and a fourth support plate 292 arranged opposite to each other, wherein a mounting space 293 is formed between the third support plate and the fourth support plate 292, the pivot lever 24 is at least partially mounted in the mounting space 293, and the pivot lever 24 is in rotatable connection simultaneously with the third support plate 291 and the fourth support plate 292. It could be understood that the third support plate 291 and the fourth support plate 292 can exert a limiting effect on the pivot lever 24, hereby avoiding that the pivot lever 24 is separated from the second fork-shaped part 29 during the rotating process. Furthermore, this mounting space 293 can further allow the first rod 16 to pass therethrough, so as to facilitate the rotatable connection between the first rod 16 and the pivot lever 24. Referring to Figs. 1, 7, and 8, in the present embodiment, one side of the first beam 12 is equipped with an accommodating space 30 for placing the brake cylinder 11. This accommodating space 30 is located on the side of the first beam 12 away from the second beam 13. In other embodiments, this accommodating space 30 may also be located on the side of the first beam 12 close to the second beam 13. In the present embodiment, the cylinder block 112 of the brake cylinder 11 is mounted on the vehicle body, and the brake cylinder 11 is located in the mounting space 293. The piston rod 111 of the brake cylinder 11 is in transmissive connection simultaneously with the first beam 12 and the first rod 16 through the pivot lever 24. The side of the fourth support plate 292 close to the mounting space 293 is provided with a second guiding slant 2921, and the second guiding slant 2921 is located at the end of the fourth support plate 292 close to the accommodating space 30. In other words, the position of the second guiding
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slant 2921 is at the side of the fourth support plate 292 close to the brake cylinder 11. With reference to Fig. 8, in the present embodiment, the fourth support plate 292 is located below the third support plate 291, and after the pivot lever 24 has been mounted between the third support plate 291 and the fourth support plate 292, the pivot lever 24 would press on the second guiding slant 2921 because of gravity. It is worth noting that in the present embodiment, the second guiding slant 2921 is inclined downwards with respect to a horizontal plane. In this way, the contact area between the second guiding slant 2921 and the side face of the pivot lever 24 can be reduced, the friction received by the pivot lever 24 can be reduced, and the wear of the pivot lever 24 can be reduced. Furthermore, after the pivot lever 24 comes into contact with the second guiding slant 2921, the pivot lever 24 is arranged to be inclined downwards, which can avoid the situation of jam between the pivot lever 24 and the transmission shaft 28. Furthermore, the downwards inclined arrangement of the pivot lever 24 enables that the deflecting force exerted on the first beam 12 by the pivot lever 24 decreases when the first rod 16 drives the first beam 12 to move via the pivot lever 24, accordingly, the first beam 12 would not easily deflect around its own axis, and the stability can be better kept when performing brake. It could be understood that the first beam 12 is not prone to deflect, which will also make the first brake shoe 14 less prone to eccentric wear; and it is possible to ensure as possible that the upper and lower end faces of the first brake shoe 14 have consistent worn conditions. It shall be clarified that the horizontal plane is based on the placement state of the braking device 1 during normal operation. Specifically, the horizontal plane is the plane indicated by arrow D in Fig. 8. The terms "upper" and "lower" indicating the orientation in this context are all based on the placement state of the braking device 1 during normal operation. It shall be clarified that in the present embodiment, the side of the third support plate 291 close to the mounting space 293 is provided with a first guiding slant 2911, the first guiding slant 2911 is inclined upwards with respect to the horizontal plane, and the first guiding slant 2911 is located at the end of the third support plate 291 close to the accommodating space 30. In this way, when the second fork-shaped part 29 is rotated 1800 around its own axis, the third support plate 291 is located below the fourth support plate 292, and the first guiding slant 2911 can function as the second guiding slant 2921. Therefore, third support plate 291 is provided with the first guiding slant 2911, facilitating mounting of the second fork-shaped part 29. No matter whether the second fork-shaped part 29 is mounted on the first beam 12 in the state as shown in Fig. 7, or mounted on the first beam 12 after the second fork-shaped part in the state shown in Fig. 7 is rotated 1800 around its own axis,
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the above beneficial effects can always be achieved, for example, the wear of the pivot lever 24 is reduced, jam between the pivot lever 24 and the transmission shaft 28 is avoided, the first beam 12 would not easily deflect around its own axis, and eccentric wear would not easily appear on the first brake shoe 14. Furthermore, it shall be clarified that the inclined angle of the first guiding slant 2911 with respect to the horizontal plane and the inclined angle of the second guiding slant 2921 with respect to the horizontal plane can be set by a staff member according to actual dimensions of the pivot lever 24. In some embodiments: Referring to Fig. 1: The braking device 1 shown in Fig. 1 comprises a brake cylinder 11, a first beam 12, a second beam 13, a first brake shoe 14, a second brake shoe 15, a pivot lever 24, a first rod 16, a regulating member 18, a second rod 17, a first latch nut 19, a second latch nut 20, a first shim 21, and a second shim 22. Herein, number of each of the first brake shoes 14, second brake shoes 15, first rods 16, regulating member 18, second rods 17, first latch nuts 19, second latch nuts 20, first shims 21, and second shims 22 is two. The two first brake shoes 14 are respectively mounted at both ends of the first beam 12, and the two second brake shoes 15 are respectively mounted at both ends of the second beam 13. One first rod 16, one regulating member 18, one second rod 17, one first latch nut 19, one second latch nut 20, one first shim 21, and one second shim 22 form a push rod assembly, and in Fig. 1, there are two push rod assemblies, which are arranged between the first beam 12 and the second beam 13, wherein the stability during the movement of the first beam 12 and the second beam 13 can be ensured through simultaneous working of the two push rod assemblies. The pivot lever 24 is in rotatable connection simultaneously with the piston rod 111 of the brake cylinder 11, the first beam 12, and the first rod 16. When the brake cylinder 11 is activated, the piston rod 111 of the brake cylinder 11 gradually extends out of the cylinder block 112, which firstly drives the pivot lever 24 to rotate relative to the first beam 12, wherein during the rotating process of the pivot lever 24 relative to the first beam 12, the two push rod assemblies are driven to move as a whole and then push the second beam 13 to move, such that the second brake shoe 15 abuts against the outer side of the wheel hub. Then, due to the reaction force of the wheel hub on the second brake shoe 15, the two push rod assemblies reversely drive via the pivot lever 24 the first beam 12 to move, such that the first brake shoe 14 abuts against the inner side of the wheel hub, hereby completing the braking operation. In case that the gap between the first brake shoe 14 and the inner side of the wheel hub increases and/or the gap between the second brake shoe 15 and the outer side of the wheel hub increases, the regulating member 18 is rotated, and the first beam 12 and the second beam 13 can be driven to move away
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from each other during process that the first rod 16 and the second rod 17 move away from each other, such that the first brake shoe 14 moves closer to the wheel hub, and such that the second brake shoe 15 moves closer to the wheel hub. In this way, the gap between the first brake shoe 14 and the wheel hub can be effectively reduced, and the gap between the second brake shoe and the wheel hub can be reduced as well. Referring to Figs. 2-4: In Fig. 2, the regulating member 18 is simultaneously sleeved over the first rod 16 and the second rod 17, and the regulating member 18 is in thread fit simultaneously with the first rod 16 and the second rod 17. When the regulating member 18 is rotated relative to the first rod 16 and the second rod 17, the first rod 16 and the second rod 17 move towards or away from each other. The first latch nut 19 is in thread fit with the first rod 16, the second latch nut 20 is in thread fit with the second rod 17, the first shim 21 is located between the first latch nut 19 and the regulating member 18, and both sides of the first shim 21 respectively abut against the first latch nut 19 and the regulating member 18. The second shim 22 is located between the second latch nut 20 and the regulating member 18, and both sides of the second shim 22 respectively abut against the second latch nut 20 and the regulating member 18. In Figs. 2 and 3, the end of the regulating member 18 close to the first latch nut 19 is provided with a first groove 181, and in Fig. 4, the first shim 21 is provided with a first protrusion 23, wherein the first protrusion 23 is embedded in the first groove 181. In this way, the relative rotation between the first shim 21 and the regulating member 18 can be prevented. The first protrusion 23 is wedge-shaped, the thickness of the first protrusion 23 decreases gradually along a first preset direction, and the first preset direction is a direction from the end of the first protrusion 23 away from the first shim 21 towards the end of the first protrusion 23 close to the first shim 21. In this way, it is facilitated to embed the first protrusion 23 into the first groove 181. The second shim 22 has the same structure as the first shim 21, and a second groove having the same structure as the first groove 181 is provided at the end of the regulating member 18 close to the second latch nut 20. In Fig. 2, the first support plate 251 and the second support plate 252 are respectively provided with a first mounting hole 2511 and a second mounting hole 2521; and the first mounting sleeve 26 and the second mounting sleeve 27 are respectively inserted within the first mounting hole 2511 and the second mounting hole 2521. Referring to Figs. 5 and 6: The end of the first mounting sleeve 26 close to the second support plate 252 is provided with a first projecting part 261, wherein the first projecting part 261 projects from the external wall of the first mounting sleeve 26 along a radial direction of the first mounting sleeve 26, and
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the first projecting part 261 abuts against the side of the first support plate 251 close to the second support plate 252. The structure of the second mounting sleeve 27 is the same as that of the first mounting sleeve 26: the end of the second mounting sleeve 27 close to the first support plate 251 is provided with a second projecting part 271, wherein the second projecting part 271 projects from the external wall of the second mounting sleeve 27 along a radial direction of the second mounting sleeve 27, and the second projecting part 271 abuts against the side of the second support plate 252 close to the first support plate 251. Referring to Figs. 7 and 8: In Fig. 7, an end of the first beam 12 is provided with a second fork-shaped part 29, wherein the second fork-shaped part 29, is equipped with a third support plate 291 and a fourth support plate 292 arranged opposite to each other, and a mounting space 293 configured for mounting the pivot lever 24 is formed between the third support plate and the fourth support plate 292. In Fig. 8, the side of the third support plate 291 close to the mounting space 293 is provided with a first guiding slant 2911, the first guiding slant 2911 is inclined upwards with respect to the horizontal plane, and the first guiding slant 2911 is located at the end of the third support plate 291 close to the accommodating space 30. The side of the fourth support plate 292 close to the mounting space 293 is provided with a second guiding slant 2921, the second guiding slant 2921 is inclined downwards with respect to the horizontal plane and the second guiding slant 2921 is located at the end of the fourth support plate 292 close to the accommodating space 30. The above mentioned are merely specific embodiments of the present disclosure; however, the scope of protection of the present disclosure is not limited thereto, and variations or substitutions, that can be easily envisaged by any technical person familiar with the prior art within the technical scope disclosed in the present disclosure, shall be covered in the scope of protection of the present disclosure. Thus, the scope of protection of the present disclosure shall be defined according to the scope of protection of the claims. Industrial Applicability In summary, the present disclosure provides a braking device and a railway vehicle, and the braking device and the railway vehicle can maintain relatively good stability when performing brake.
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Claims (15)

  1. ON120017904AU
    Claims: 1. A braking device, comprising: a first beam, a second beam, a first rod, a second rod, and a regulating member, wherein the first beam is configured for mounting a first brake shoe, the second beam is configured for mounting a second brake shoe, the first beam and the second beam are arranged with an interval therebetween, one end of the first rod is in connection with the first beam, the other end of the first rod is in thread fit with the regulating member, one end of the second rod is in connection with the second beam, the other end of the second rod is in thread fit with the regulating member, and the regulating member is configured to make, when rotating relative to the first rod and the second rod, the first rod and the second rod move towards or away from each other, so as to drive the first beam and the second beam to move towards or away from each other, hereby changing a gap between the first brake shoe and a wheel hub as well as a gap between the second brake shoe and the wheel hub, wherein the braking device further comprises a brake cylinder and a pivot lever, wherein the pivot lever is in rotatable connection simultaneously with the piston rod of the brake cylinder, the first beam, and the first rod; and the brake cylinder is configured to drive via the pivot lever the first beam to move and to drive via the pivot lever the first rod to move, wherein an end of the first beam is provided with a second fork-shaped part, which is equipped with a third support plate and a fourth support plate arranged opposite to each other, wherein a mounting space is formed between the third support plate and the fourth support plate, the pivot lever is at least partially mounted in the mounting space, and the pivot lever is in rotatable connection simultaneously with the third support plate and the fourth support plate, and the first rod penetrates the mounting space and is in rotatable connection with the pivot lever, wherein one side of the first beam is equipped with an accommodating space configured for the brake cylinder to be placed; and a side of the fourth support plate close to the mounting space is provided with a second guiding slant configured to contact a side face of the pivot lever, wherein the second guiding slant is inclined downwards with respect to the horizontal plane, and the second guiding slant is located at an end of the fourth support plate close to the accommodating space.
  2. 2. The braking device according to claim 1, wherein the first rod is provided with a first threaded segment, and the second rod is provided with a second threaded segment, with a turning direction of the first threaded segment being opposite to that of the second threaded segment, and the regulating member is provided with a third threaded segment, wherein the
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    first threaded segment and the second threaded segment are simultaneously in thread fit with the third threaded segment.
  3. 3. The braking device according to claim 1, wherein the first rod is provided with a first threaded segment, the second rod is provided with a second threaded segment, and the regulating member is provided with a third threaded segment and a fourth threaded segment, wherein the first threaded segment is in thread fit with the third threaded segment, and the second threaded segment is in thread fit with the fourth threaded segment, wherein a turning direction of the first threaded segment is same as that of the second threaded segment, and a turning direction of the third threaded segment is opposite to that of the fourth threaded segment.
  4. 4. The braking device according to claim 2, wherein the regulating member is sleeve-shaped, and the regulating member is simultaneously sleeved over the first rod and the second rod, wherein the first threaded segment and the second threaded segment are both externally threaded, while the third threaded segment is internally threaded.
  5. 5. The braking device according to claim 4, wherein the braking device further comprises a first latch nut and a second latch nut, wherein the first latch nut is in thread fit with the first rod, the second latch nut is in thread fit with the second rod, and the first latch nut and the second latch nut respectively abut against two ends of the regulating member.
  6. 6. The braking device according to claim 5, wherein the braking device further comprises a first shim, the first shim is sleeved over the first rod and is located between the first latch nut and the regulating member, and two sides of the first shim respectively abut against the first latch nut and the regulating member; and/or
    the braking device further comprises a second shim, the second shim is sleeved over the second rod and is located between the second latch nut and the regulating member, and two sides of the second shim respectively abut against the second latch nut and the regulating member.
  7. 7. The braking device according to claim 6, wherein a side of the first shim close to the regulating member is provided with at least one first protrusion, and a side of the regulating member close to the first shim is provided with at least one first groove, into which the at least one first protrusion is embedded respectively; and/or a side of the second shim close to the regulating member is provided with at least one second protrusion, and a side of the regulating member close to the second shim is provided with at least one second groove, into which the at least one second protrusion is embedded respectively.
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  8. 8. The braking device according to claim 7, wherein the at least one first protrusions is multiple and the at least one first grooves is multiple, with the former and the latter being respectively in one-to-one correspondence with each other, wherein the multiple first protrusions are arranged along a circumferential direction of the first shim with an interval therebetween, and the multiple first grooves are arranged along a circumferential direction of the regulating member with an interval therebetween; and/or the at least one second protrusions is multiple and the at least one second grooves is multiple with the former and the latter being respectively in one-to-one correspondence with each other, the multiple second protrusions are arranged along a circumferential direction of the second shim with an interval therebetween, and the multiple second grooves are arranged along a circumferential direction of the regulating member with an interval therebetween.
  9. 9. The braking device according to claim 7 or 8, wherein the at least one first protrusion is wedge-shaped, and a thickness of each of the at least one first protrusion decreases gradually along a first preset direction, wherein the first preset direction is a direction from an end of the at least one first protrusion away from the first shim towards an end of the at least one first protrusion close to the first shim; and/or the at least one second protrusion is wedge-shaped, and a thickness of each of the at least second protrusion decreases gradually along a second preset direction, wherein the second preset direction is a direction from an end of the at least one second protrusion away from the second shim towards an end of the at least one second protrusion close to the second shim.
  10. 10. The braking device according to claim 1, wherein an end of the first rod close to the first beam is provided with a first fork-shaped part, which is equipped with a first support plate and a second support plate arranged opposite to each other, and the pivot lever is mounted between the first support plate and the second support plate, and is in rotatable connection simultaneously with the first support plate and the second support plate.
  11. 11. The braking device according to claim 10, wherein the braking device further comprises a first mounting sleeve, a second mounting sleeve, and a transmission shaft; the first support plate and the second support plate are respectively provided with a first mounting hole and a second mounting hole; the first mounting sleeve and the second mounting sleeve are respectively inserted within the first mounting hole and the second mounting hole; and the transmission shaft successively penetrates the first mounting sleeve, the pivot lever, and the second mounting sleeve.
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  12. 12. The braking device according to claim 11, wherein an end of the first mounting sleeve close to the second support plate is provided with a first projecting part, which projects from an external wall of the first mounting sleeve along a radial direction of the first mounting sleeve, and abuts against a side of the first support plate close to the second support plate; and an end of the second mounting sleeve close to the first support plate is provided with a second projecting part, which projects from an external wall of the second mounting sleeve along a radial direction of the second mounting sleeve, and abuts against a side of the second support plate close to the first support plate.
  13. 13. The braking device according to claim 12, wherein two sides of the pivot lever abut against the first projecting part and the second projecting part respectively.
  14. 14. The braking device according to claim 1, wherein a side of the third support plate close to the mounting space is provided with a first guiding slant configured to contact a side face of the pivot lever, wherein the first guiding slant is inclined upwards with respect to a horizontal plane, and the first guiding slant is located at an end of the third support plate close to the accommodating space.
  15. 15. A railway vehicle, comprising a braking device according to any one of claims 1 to 14.
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    Drawings:
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    5/5 26
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    A 293
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AU2020281020A 2020-09-17 2020-09-17 Braking device and railway vehicle Active AU2020281020B2 (en)

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