CN108715170B - Railway vehicle, coupler and coupler knuckle - Google Patents
Railway vehicle, coupler and coupler knuckle Download PDFInfo
- Publication number
- CN108715170B CN108715170B CN201810698700.0A CN201810698700A CN108715170B CN 108715170 B CN108715170 B CN 108715170B CN 201810698700 A CN201810698700 A CN 201810698700A CN 108715170 B CN108715170 B CN 108715170B
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- knuckle
- coupler
- traction table
- traction
- zone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
- B61G3/10—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads in the form of hook-like interengaging rigid jaws, e.g. "Willison" type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
- B61G3/10—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads in the form of hook-like interengaging rigid jaws, e.g. "Willison" type
- B61G3/12—Jaw-locking devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The invention discloses a railway vehicle, a coupler and a coupler knuckle thereof, wherein the coupler knuckle comprises an upper traction table, a lower traction table, a locking surface and a pin hole, the traction surface of the upper traction table and/or the lower traction table is/are divided into a contact area and a yielding area along the direction close to the locking surface, the extension surface of one end of the contact area close to the locking surface is an M1 surface, and the yielding area is positioned on one side of the M1 surface far away from the pin hole. Therefore, the distance between the edge of the contact area of the upper traction table and/or the lower traction table of the coupler knuckle and the traction table of the coupler body and the lock surface is increased, and the matched contact bearing position of the coupler knuckle and the coupler body is far away from the structure mutation area, so that the stress level of the upper traction table and the lower traction table of the coupler knuckle and the coupler body is reduced, the problem that the traction tables of the coupler knuckle and the coupler body are broken too early is avoided, the service lives of the coupler knuckle and the coupler body are prolonged, and the maintenance cost of the coupler is reduced.
Description
Technical Field
The invention relates to the technical field of railway traffic, in particular to a railway vehicle, a coupler and a coupler knuckle thereof.
Background
Couplers are one of the most basic and important components of railway vehicles, and are installed at both ends of the vehicles for connecting adjacent two vehicles and transmitting longitudinal forces of the trains. The most widely used couplers are knuckle couplers, and as shown in fig. 1, the knuckle couplers comprise parts such as a coupler body 03, a coupler knuckle 01, a coupler lock, a coupler knuckle push iron, a coupler knuckle pin 02 and the like, and the coupler knuckle 01 can rotate around the coupler knuckle pin 02 to realize opening and closing of the couplers. The main bearing parts inside the coupler are a traction table of the coupler knuckle 01 and a traction table of the coupler body 03. As shown in fig. 2, two coupler knuckles connect two adjacent vehicles.
At present, the coupler is broken mainly under the stretching working condition, and the main bearing parts of the coupler are a traction table of the coupler knuckle 01 and a traction table of the coupler body 03. As shown in fig. 3-4, knuckle 01 has an upper traction table, a lower traction table, and a locking surface 01b. As shown in fig. 5-6, the hook body has a traction table, a lower traction table and a lock cavity 03c. As shown in fig. 7, when the coupler knuckle is matched with the hook body, the upper traction table 01a of the coupler knuckle is abutted against the upper traction table 03a of the hook body, the lower traction table 01d of the coupler knuckle is abutted against the lower traction table 03e of the hook body, and then the upper traction surface 01c of the coupler knuckle is contacted with and abutted against the upper traction surface 03b of the hook body, and the lower traction surface 01e of the coupler knuckle is contacted with and abutted against the lower traction surface 03e of the hook body, so that bearing is realized. When the coupler lock is in contact with the lock surface 01b on the knuckle 01, the coupler lock can restrict the knuckle 01 from rotating around the knuckle pin 02 to place the coupler in a locked state, and when the coupler lock is moved into the lock cavity 03c, the knuckle 01 rotates around the knuckle pin 02 to place the coupler in an unlocked state.
As can be seen from fig. 3 to fig. 4, after the upper traction table and the lower traction table of the coupler knuckle are closer to the lock surface 01b, and the coupler knuckle 01 is in fit connection with the coupler body 03, the contact area between the upper traction table 01a of the coupler knuckle and the upper traction 03a table of the coupler body and the edge, close to the lock surface 01b, of the contact area between the lower traction table 01d of the coupler knuckle and the lower traction table 03d of the coupler body have obvious abrupt changes, so that the stress of the root parts, close to the lock surface, of the upper traction table and the lower traction table of the coupler knuckle 01 is more concentrated, the root parts of the upper traction table and the lower traction table of the coupler knuckle 01 are easily broken, the service life of the coupler knuckle is reduced, the replacement and maintenance cost of the coupler is increased, and the running safety of a train is affected.
In summary, how to effectively prolong the service life of the knuckle and reduce the maintenance cost of the coupler is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, a first object of the present invention is to provide a knuckle whose structural design can effectively extend the service life of the knuckle and reduce the maintenance cost of the coupler, and a second object of the present invention is to provide a coupler including the above-mentioned knuckle and a railway vehicle including the above-mentioned coupler.
In order to achieve the first object, the present invention provides the following technical solutions:
the coupler knuckle comprises an upper traction table, a lower traction table, a locking surface and a pin hole, wherein the traction surface of the upper traction table and/or the lower traction table is divided into a contact area and a yielding area along the direction close to the locking surface, the extension surface of one end of the contact area close to the locking surface is an M1 surface, and the yielding area is positioned on one side of the M1 surface far away from the pin hole.
Preferably, in the knuckle, the contact area is an arc surface, and the contact area protrudes towards a direction away from the pin hole.
Preferably, in the knuckle, the relief area is an arc surface or a plane surface.
Preferably, in the coupler knuckle, the minimum distance between the connection position of the relief area and the contact area and the lock surface is L1, and 60mm is more than or equal to L1 and more than or equal to 10mm.
Preferably, in the knuckle, the traction surfaces of the upper traction table and the lower traction table are divided into a contact area and a relief area along the direction of approaching the locking surface;
the yielding zone of the upper traction table and the yielding zone of the lower traction table are symmetrically arranged.
Preferably, in the above knuckle, the inner traction surface of the wrist includes an abutment region and a non-abutment region, the non-abutment region is disposed on an upper side and/or a lower side of the abutment region, and the non-abutment region is located on a side of an upper extension surface or a lower extension surface of the abutment region, which is close to an outer side surface of the wrist.
Preferably, in the knuckle, the number of the non-abutting areas is two, and the non-abutting areas are a first non-abutting area and a second non-abutting area respectively, and the inner traction surface of the wrist is divided into the first non-abutting area, the abutting area and the second non-abutting area from top to bottom in sequence.
Preferably, in the knuckle, the upper edge of the abutting area is not higher than the upper edge of the upper traction table of the knuckle, and the lower edge of the abutting area is not lower than the lower edge of the lower traction table of the knuckle.
A coupler comprising a knuckle and a coupler body, the knuckle being a knuckle as claimed in any one of the preceding claims.
A railway vehicle comprising a coupler, the coupler being as described above.
When the coupler knuckle provided by the invention is matched with the coupler body, the traction surface of the upper traction table of the coupler knuckle contacts and abuts against the traction surface of the upper traction table of the coupler body, the traction surface of the lower traction table of the coupler knuckle contacts and abuts against the traction surface of the lower traction table of the coupler body, and the traction table of the coupler body is positioned on one side of the traction table of the coupler knuckle, which is close to the pin hole. Because the upper traction table and/or the lower traction table of the coupler knuckle are provided with the relief areas, and the relief areas are positioned on one side of the extension surface of the contact areas, which is far away from the pin holes, when the coupler knuckle is matched with the coupler body, gaps are reserved between the relief areas on the traction surfaces of the upper traction table and/or the lower traction table of the coupler knuckle and the traction surfaces on the traction table of the coupler body, and meanwhile, the contact areas on the traction surfaces of the upper traction table and/or the lower traction table of the coupler knuckle are mutually attached and contacted with the traction surfaces on the traction table of the coupler body, and the clearance is not reserved between the relief areas.
The device is characterized in that the clearance is reserved between the contact area and the lock surface and the clearance is reserved between the clearance area and the traction table of the hook body and the clearance is not reserved between the clearance area and the traction table of the hook body, so that the distance between the edge of the contact area of the upper traction table and/or the edge of the lower traction table of the coupler knuckle and the traction table of the hook body and the lock surface is increased, the distance between the matched contact bearing position of the coupler knuckle and the hook body and the lock cavity is increased, and the matched contact bearing position of the coupler knuckle and the hook body is far away from the structure mutation area, so that the stress level of the upper traction table and the lower traction table of the coupler knuckle and the hook body is reduced, the problem that the traction table of the coupler knuckle and the hook body breaks prematurely is avoided, the service life of the coupler knuckle and the hook body is prolonged, and the maintenance cost of the coupler is reduced.
In order to achieve the second object, the invention also provides a coupler and a railway vehicle, wherein the coupler comprises a coupler knuckle and a coupler body, the coupler knuckle is any one of the coupler knuckles, and the railway vehicle comprises the coupler, so the coupler and the railway vehicle have corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art single coupler;
FIG. 2 is a schematic diagram of two couplers in a hitched condition in the prior art;
FIG. 3 is a top view of a prior art knuckle;
FIG. 4 is a bottom view of a prior art knuckle;
FIG. 5 is a cross-sectional view of a prior art hook body;
FIG. 6 is another cross-sectional view of a prior art hook body;
FIG. 7 is a cross-sectional view of a prior art knuckle and hook body engagement;
FIG. 8 is a top view of a knuckle provided by an embodiment of the present invention;
FIG. 9 is a bottom view of a knuckle provided by an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a contact area location provided by an embodiment of the present invention;
FIG. 11 is a cross-sectional view of a relief area location provided by an embodiment of the present invention;
FIG. 12 is an enlarged view of a portion of area A of FIG. 11;
FIG. 13 is a cross-sectional view of a knuckle according to another embodiment of the invention taken along a vertical plane;
fig. 14 is a schematic view of two knuckle attachments provided in another embodiment of the invention.
In fig. 1-7:
01-knuckle, upper traction table of 01 a-knuckle, 01 b-lock face, upper traction face of 01 c-knuckle, lower traction table of 01 d-knuckle, lower traction face of 01 e-knuckle, 02-knuckle pin, 03-hook, upper traction table of 03 a-hook, upper traction face of 03 b-hook, 03 c-lock cavity, lower traction table of 03 d-hook, lower traction face of 03 e-hook;
in fig. 8-14:
an upper traction table of a 101-knuckle, a pin hole of a 104-knuckle, a lower traction table of a 108-knuckle, a 111 a-contact zone, a 111 b-relief zone, a 114-wrist, a 114 a-first non-abutment zone, a 114 b-abutment zone, a 114 c-second non-abutment zone, a 115-lock face, a 116-knuckle pin;
201-upper traction table of the hook body and 205-lower traction table of the hook body.
Detailed Description
A first object of the present invention is to provide a knuckle which is structurally designed to effectively extend the service life of the knuckle and reduce the maintenance costs of the coupler, and a second object of the present invention is to provide a coupler including the above-mentioned knuckle and a railway vehicle including the above-mentioned coupler.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Please refer to fig. 8-12. The knuckle provided by the embodiments of the present invention includes an upper traction table 101, a lower traction table 108, a locking surface 115, and a pin hole 104, wherein the locking surface 115 is adapted to be locked against rotation about the knuckle pin 116 by a hook lock, and the pin hole 104 is adapted to pass through the knuckle pin 116. It is important that the traction surface of the upper traction table 101 and/or the lower traction table 108 is divided into a contact area 111a and a relief area 111b in a direction gradually approaching the lock surface 115, i.e., the traction surface of at least one of the upper traction table 101 and the lower traction table 108 is divided into a contact area 111a and a relief area 111b, and the relief area 111b is located between the contact area 111a and the lock surface 115, i.e., the traction surface is sequentially divided into a contact area 111a and a relief area 111b in a direction gradually approaching the lock surface 115.
In addition, if the extension surface of the contact region 111a near the end of the locking surface 115 is an M1 surface, the relief region 111b is located on the side of the M1 surface away from the pin hole 104. If the first end of the contact region 111a is connected to the relief region 111b, the M1 surface is an extension surface of the first end of the contact region 111a, and the M1 surface is located between the relief region 111b and the pin hole 104. When the knuckle is in a normal use state, the cross section of the M1 surface, the cross section of the contact area 111a and the cross section of the relief area 111b are obtained by cutting the knuckle along a horizontal plane, the cross section of the M1 surface is an extension line of the cross section of the contact area 111a, and the cross section of the M1 surface is located between the cross section of the relief area 111b and the cross section of the pin hole 104.
The pin hole 104 and the lock surface 115 are the same as the pin hole 104 and the lock surface 115 on the knuckle in the prior art, and the pin hole 104 is located on the side of the upper traction table 101 and the lower traction table 108 near the hook tip of the knuckle.
Referring specifically to fig. 10-12, when the coupler knuckle and the coupler body provided by the embodiment of the invention are matched, the traction surface of the upper traction table 101 of the coupler knuckle contacts and abuts against the traction surface of the upper traction table 201 of the coupler body, the traction surface of the lower traction table 108 of the coupler knuckle contacts and abuts against the traction surface of the lower traction table 205 of the coupler body, and the traction table of the coupler body is positioned on one side of the traction table of the coupler knuckle, which is close to the pin hole 104. Because the upper traction table 101 and/or the lower traction table 108 of the knuckle are provided with the relief area 111b, and the relief area 111b is located on one side of the extension surface of the contact area 111a away from the pin hole 104, when the knuckle is matched with the hook body, a gap is formed between the relief area 111b on the traction surface of the upper traction table 101 and/or the lower traction table 108 of the knuckle and the traction surface of the traction table of the hook body, and meanwhile, the contact area 111a on the traction surface of the upper traction table 101 and/or the lower traction table 108 of the knuckle and the traction surface of the traction table of the hook body are mutually attached and contacted, and the gap is not formed between the relief area 111b and the traction surface.
By the arrangement, the yielding zone 111b is positioned between the contact zone 111a and the lock surface 115, and a gap is reserved between the yielding zone 111b and the traction table of the coupler body and is not contacted, so that the distance between the edge of the contact area of the upper traction table 101 and/or the lower traction table 108 of the coupler knuckle and the traction table of the coupler body and the lock surface 115 is increased, the distance between the matched contact bearing position of the coupler knuckle and the coupler body and the lock cavity is increased, and the matched contact bearing position of the coupler knuckle and the coupler body is far away from the structure mutation area, thereby reducing the stress level of the upper traction table and the lower traction table of the coupler knuckle and the coupler body, avoiding the premature fracture problem of the traction table of the coupler knuckle and the coupler body, prolonging the service life of the coupler knuckle and the coupler body, and simultaneously reducing the maintenance cost of the coupler.
In order to prevent misalignment when the knuckle engages the hook body, the contact area 111a may be curved, as may the area of the traction surface of the hook body traction table that engages the contact area. So that the coupler knuckle and the coupler body can be prevented from sliding each other and generating offset dislocation.
In addition, the contact region 111a may be a cambered surface. Specifically, the contact area 111a may be convex in a direction away from the pin hole 104, and the contact area 111a may be concave in a direction away from the pin hole 104, which is not limited herein.
The contact area 111a may also be other types of curved surfaces, such as a part of a sphere, or the contact area 111a may also be planar.
In another embodiment, the relief area 111b may be an arc or a plane, and since the relief area 111b is not in contact with the traction table of the hook body, the relief area 111b may be any shape, so long as a gap is ensured between the relief area 111b and the traction table of the hook body after the coupler knuckle is matched with the hook body.
Preferably, the minimum distance from the lock surface 115 at which the relief zone 111b is connected to the contact zone 111a is L1, 60 mm. Gtoreq.L1.gtoreq.10 mm. That is, the minimum distance L1 refers to the minimum value of the vertical distances between all points on the contact area 111a and the lock surface 115, so that the distance between the mating contact bearing position of the knuckle and the hook body and the lock surface 115 is less than or equal to 60mm and greater than or equal to 10mm, for example, can be 12mm, 15mm, etc., and the stress of the knuckle traction table is effectively reduced.
Of course, the minimum distance L1 between the location where the relief area 111b is connected to the contact area 111a and the lock surface 115 may also be other values according to actual situations, which is not limited herein.
In a preferred embodiment, the traction surfaces of the upper traction table 101 and the lower traction table 108 of the knuckle are each divided into a contact zone 111a and a relief zone 111b in a direction approaching the lock surface 115, i.e., the traction surface of the upper traction table 101 of the knuckle has a contact zone 111a and a relief zone 111b, while the traction surface of the lower traction table 108 of the knuckle also has a contact zone 111a and a relief zone 111b. Of course, it is also possible to have only the contact zone 111a and the relief zone 111b on the traction surface of the knuckle upper traction table 101 and no contact zone 111a and relief zone 111b on the traction surface of the knuckle lower traction table 108. Alternatively, only the traction surface of the sub-knuckle traction table 108 has contact areas 111a and relief areas 111b, while the traction surface of the upper knuckle traction table 101 does not have contact areas 111a and relief areas 111b.
When the traction surfaces of the upper traction table 101 and the lower traction table 108 of the knuckle are each divided into a contact area 111a and a relief area 111b in a direction approaching the lock surface 115, the relief area 111b of the upper traction table 101 and the relief area 111b of the lower traction table 108 may be the same shape or different shapes. One of the relief area 111b of the upper traction table 101 and the relief area 111b of the lower traction table 108 is curved and the other is flat, specifically, the relief area 111b of the upper traction table 101 may be curved, and the relief area 111b of the lower traction table 108 may be flat, which is not limited herein.
Alternatively, when the traction surfaces of the upper traction table 101 and the lower traction table 108 of the knuckle are each divided into the contact area 111a and the relief area 111b in a direction approaching the lock surface 115, the relief area 111b of the upper traction table 101 and the relief area 111b of the lower traction table 108 may be symmetrically disposed, and specifically the relief area 111b of the traction table 101 and the relief area 111b of the lower traction table 108 may be symmetrically disposed along a horizontal plane, which is not limited herein.
For convenience in manufacturing, the upper traction table 101, the lower traction table 108, the locking surface 115 and the hole wall of the pin hole 104 may be an integral structure, i.e. the knuckle may be an integral casting structure. Of course, the knuckle may also be formed of several sections joined together, not limited in this regard.
The knuckle provided by the embodiments of the present invention includes a wrist 114, an upper traction table 101, and a lower traction table 108. The main point is that the inner traction surface of the wrist 114 includes an abutting region 114b and a non-abutting region, and the upper side and/or the lower side of the abutting region 114b is provided with the non-abutting region, i.e. the non-abutting region and the abutting region 114b are distributed up and down. When the two coupler knuckles are connected and matched, a gap is reserved between a non-abutting area on the inner side traction surface of the coupler wrist 114 of one coupler knuckle and the inner side traction surface of the coupler wrist 114 of the other coupler knuckle, namely, the non-abutting area on the inner side traction surface of the coupler wrist 114 of one coupler knuckle is not contacted with the inner side traction surface of the coupler wrist 114 of the other coupler knuckle. The inner side of the hook wrist 114 is the side of the hook wrist 114 facing the hook tip, and when the two hooks are in connection and coupling, the inner sides of the hook wrist 114 of the two hooks are in contact to realize load transmission.
The non-abutment region is located on the side of the upper or lower extension surface of the abutment region 114b that is adjacent to the outer side surface of the wrist 114. That is, when the non-abutting region is located at the upper side of the abutting region 114b, the non-abutting region is located at the side of the upper extending surface of the abutting region 114b, which is close to the outer side surface of the wrist 114; when the non-abutment region is located at the lower side of the abutment region 114b, the non-abutment region is located at the side of the lower extension surface of the abutment region 114b near the outer side surface of the wrist 114. The outer surface of the wrist 114 is the surface of the wrist 114 far from the hook tip.
When the coupler knuckle provided by the embodiment of the invention is applied, as the non-abutting area on the inner side traction surface of the coupler wrist 114 of one coupler knuckle and the inner side traction surface of the coupler wrist 114 of the other coupler knuckle are provided with gaps when the two coupler knuckles are connected and matched, the height difference between the abutting area 114b of the coupler wrist 114 of the two coupler knuckles and the upper traction table 101 or the lower traction table 108 in the vertical direction is reduced because the non-abutting area is positioned on the upper side or the lower side of the abutting area 114b, so that bending moment reduction is generated at the positions of the upper traction table 108, the lower traction table 108, the neck part and the like of the coupler knuckle, the fracture probability of the coupler knuckle is reduced, the structural strength of the coupler knuckle is further effectively improved, and the service life of the coupler knuckle is prolonged.
It should be noted that, in the embodiment of the present invention, all descriptions about the directions of the upper and lower heights are based on the directions of the knuckle when the knuckle is in the normal use state. When the knuckle is in normal use, the non-abutment region is located on either the upper or lower side of abutment region 114 b.
In a specific embodiment, the number of the non-abutting regions is two, the two non-abutting regions are a first non-abutting region 114b4a and a second non-abutting region 114c, and the inner traction surface of the wrist 114 is sequentially, from top to bottom, a first non-abutting region 114b4a, an abutting region 114b, and a second non-abutting region 114c, that is, the first non-abutting region 114b4a, the abutting region 114b, and the second non-abutting region 114c together form the inner traction surface of the wrist 114, and when the knuckle is in a normal use state, the first non-abutting region 114b4a is located on the upper side of the abutting region 114b, and the second non-abutting region 114c is located on the lower side of the abutting region 114 b. When the two coupler knuckles are in continuous hanging fit, a gap is reserved between the first non-abutting area 114b4a and the second non-abutting area 114c on the inner traction surface of the coupler wrist 114 of one coupler knuckle and the inner traction surface of the coupler wrist 114 of the other coupler knuckle, only the abutting area 114b is in contact with the inner traction surface of the coupler wrist 114 of the other coupler knuckle, the height difference between the abutting area 114b of the coupler wrist 114 of the two coupler knuckles and the upper traction table 101 and the lower traction table 108 in the vertical direction is reduced, and the probability of coupler knuckle fracture is further reduced.
Further, the first non-abutting region 114b4a and the second non-abutting region 114c are symmetrically arranged along a middle branching line which bisects the inner traction surface of the hook wrist 114 into an upper part and a lower part, that is, when the hook tongue is in a normal use state, the first non-abutting region 114b4a and the second non-abutting region 114c are symmetrically arranged up and down, and the abutting region 114b is positioned in the middle of the inner traction surface of the hook wrist 114, so that the middle of the inner traction surface of the hook tongue is contacted and the two end regions are not contacted in the process of connecting and pulling the two hook tongues. The stress state of the coupler knuckle and the coupler body is further improved, the problem that the coupler knuckle and the coupler body are broken too early is avoided, the service life of the coupler is prolonged, the overhaul workload is reduced, and the transportation safety and reliability are improved.
In a preferred embodiment, the bisector bisecting the abutment region 114b into upper and lower portions coincides with the bisector bisecting the inside pulling surface of the wrist 114 into upper and lower portions. Thus, the abutting area 114b is located at the middle part of the inner traction surface of the hook wrist 114 in the vertical direction, so that the upper and lower parts of the hook tongue are further guaranteed to be stressed uniformly, and the stressed state of the hook tongue and the hook body is improved.
Specifically, the extension distance of the abutment region 114b along the vertical direction is greater than the extension distance of the non-abutment region along the vertical direction. That is, when the coupler knuckle is in normal use, the height of the abutting region 114b is larger than that of the non-abutting region, so that when the two coupler knuckles are in continuous hanging fit, the area of the abutting region 114b of the coupler wrist 114 of the two coupler knuckles is not too small, and the condition that stress concentration is generated in the abutting region 114b of the coupler wrist 114 of the two coupler knuckles is avoided.
In order to reduce bending moment generated by the upper and lower traction tables 108 and the neck of the knuckle as much as possible, the upper edge of the abutment area 114b is not higher than the upper edge of the upper traction table 101 of the knuckle, and the lower edge of the abutment area 114b is not lower than the lower edge of the upper traction table 101 of the knuckle. I.e., abutment region 114b is located between the upper edge of upper traction table 101 and the lower edge of lower traction table 108, and abutment region 114b is located between the upper edge of the traction surface of upper traction table 101 and the lower edge of the traction surface of lower traction table 108 when the knuckle is sectioned along a vertical plane.
In another embodiment, the abutment area 114b may be curved or planar, so long as the engagement of the two knuckles is ensured, as long as the abutment area 114b on the inner traction surface of the wrist 114 of one knuckle contacts the inner traction surface of the wrist 114 of the other knuckle.
Preferably, the knuckle is sectioned along a vertical plane to provide a cross section of the abutment region 114b, and the cross section of the abutment region 114b is a vertical line or curve, i.e., the abutment region 114b may extend in a vertical direction without a bend, or may have a bend in a vertical direction, which is not limited herein.
In order to prevent dislocation during the coupling of two knuckles, the knuckle is cut along a vertical plane to obtain a cross section of the abutment region 114b, and the cross section of the abutment region 114b may be an arc, although the cross section of the contact surface may also be a straight line having an included angle with the vertical direction.
In addition, the knuckle is cut along the vertical plane to obtain the section of the non-abutting area, and the section of the non-abutting area is an arc line or a straight line with an included angle with the vertical direction. I.e. the non-abutment region may be inclined in a vertical direction towards the outside of the wrist 114, or the cross-section of the non-abutment region may be of other shape, such as other types of curves, not limited herein.
Based on the knuckle provided in the foregoing embodiments, the present invention also provides a coupler, which includes a knuckle and a coupler body, wherein the knuckle is the knuckle described in any one of the foregoing embodiments. Since the coupler adopts the coupler knuckle in the above embodiment, the coupler has the beneficial effects described in the above embodiment.
In addition, the application also provides a railway vehicle which comprises the coupler, so that the railway vehicle has the beneficial effects described in the embodiment.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The coupler knuckle comprises an upper traction table (101), a lower traction table (108), a lock surface (115), a coupler wrist and a pin hole (104), and is characterized in that the traction surface of the upper traction table (101) and/or the traction surface of the lower traction table (108) are divided into a contact area (111 a) and a relief area (111 b) along the direction close to the lock surface (115), the extension surface of one end of the contact area (111 a) close to the lock surface (115) is an M1 surface, and the relief area (111 b) is located on one side of the M1 surface far away from the pin hole (104).
2. A knuckle according to claim 1, characterized in that the contact area (111 a) is cambered and projects in a direction away from the pin hole (104).
3. A knuckle according to claim 1, characterized in that the relief zone (111 b) is cambered or planar.
4. A knuckle according to claim 1, characterized in that the location where the relief zone (111 b) connects with the contact zone (111 a) is at a minimum distance L1 from the lock face (115), 60mm ≡l1 ≡10mm.
5. A knuckle according to claim 1, characterized in that the traction surface of the upper traction table (101) and the traction surface of the lower traction table (108) are each divided into a contact zone (111 a) and a relief zone (111 b) along a direction approaching the lock surface (115);
the yielding zone (111 b) of the upper traction table (101) and the yielding zone (111 b) of the lower traction table (108) are symmetrically arranged.
6. The knuckle according to claim 1, characterized in that the inside pulling face of the knuckle (114) comprises an abutment zone (114 b) and a non-abutment zone, and that the upper and/or lower side of the abutment zone (114 b) is provided with the non-abutment zone, and that the non-abutment zone is located on the side of the upper or lower extension face of the abutment zone (114 b) that is close to the outside surface of the knuckle (114).
7. The knuckle according to claim 6, characterized in that the number of non-abutment zones is two and is a first non-abutment zone (114 a) and a second non-abutment zone (114 c) respectively, the inside traction surface of the knuckle (114) being divided into the first non-abutment zone (114 a), abutment zone (114 b) and second non-abutment zone (114 c) in sequence from top to bottom.
8. The knuckle according to claim 6, characterized in that an upper edge of the abutment zone (114 b) is no higher than an upper edge of the knuckle upper traction table (101), and a lower edge of the abutment zone (114 b) is no lower than a lower edge of the knuckle lower traction table (108).
9. A coupler comprising a knuckle and a coupler body, wherein the knuckle is a knuckle as claimed in any one of claims 1 to 8.
10. A railway car comprising a coupler, wherein the coupler is the coupler of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698700.0A CN108715170B (en) | 2018-06-29 | 2018-06-29 | Railway vehicle, coupler and coupler knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698700.0A CN108715170B (en) | 2018-06-29 | 2018-06-29 | Railway vehicle, coupler and coupler knuckle |
Publications (2)
| Publication Number | Publication Date |
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| CN108715170A CN108715170A (en) | 2018-10-30 |
| CN108715170B true CN108715170B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810698700.0A Active CN108715170B (en) | 2018-06-29 | 2018-06-29 | Railway vehicle, coupler and coupler knuckle |
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| CN (1) | CN108715170B (en) |
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| CN202574251U (en) * | 2012-05-21 | 2012-12-05 | 齐齐哈尔轨道交通装备有限责任公司 | Coupler knuckle of car coupler of railway vehicle |
| WO2014151745A1 (en) * | 2013-03-15 | 2014-09-25 | Mcconway & Torley, Llc | Railway car coupler and knuckle system and method |
| CN107873007A (en) * | 2015-04-06 | 2018-04-03 | 贝德罗工业有限责任公司 | Railcar hitch |
| CN208453008U (en) * | 2018-06-29 | 2019-02-01 | 中车齐齐哈尔车辆有限公司 | Rail truck, hitch and its hook bolt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130277325A1 (en) * | 2012-04-23 | 2013-10-24 | General Bearing Corporation | Knuckle pin for railway car coupler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB663607A (en) * | 1950-03-15 | 1951-12-27 | American Steel Foundries | Improvements in automatic railway car couplers |
| GB9015443D0 (en) * | 1989-08-04 | 1990-08-29 | Amsted Ind Inc | Pulling lug for railway vehicle coupler |
| US5954212A (en) * | 1998-01-20 | 1999-09-21 | National Castings Incorporated | Lightweight knuckle for a railroad car coupler |
| CN201694200U (en) * | 2010-06-23 | 2011-01-05 | 齐齐哈尔轨道交通装备有限责任公司 | Coupler knuckle and railway vehicle comprising the same |
| CN202574251U (en) * | 2012-05-21 | 2012-12-05 | 齐齐哈尔轨道交通装备有限责任公司 | Coupler knuckle of car coupler of railway vehicle |
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| CN208453008U (en) * | 2018-06-29 | 2019-02-01 | 中车齐齐哈尔车辆有限公司 | Rail truck, hitch and its hook bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108715170A (en) | 2018-10-30 |
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