CN104029693A - Coupler component and vehicle - Google Patents
Coupler component and vehicle Download PDFInfo
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- CN104029693A CN104029693A CN201410299890.0A CN201410299890A CN104029693A CN 104029693 A CN104029693 A CN 104029693A CN 201410299890 A CN201410299890 A CN 201410299890A CN 104029693 A CN104029693 A CN 104029693A
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- hitch
- coupler body
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- hook
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Abstract
The invention provides a coupler component and a vehicle. The coupler component comprises a first coupler and a second coupler which are matched with each other in a coupling manner. The first coupler comprises a first coupler body and a first coupler knuckle, the first coupler knuckle can be arranged on the first coupler body pivotally, a coupling matching space used for accommodating the second coupler is formed between the first coupler knuckle and the first coupler body, the first coupler knuckle is provided with a first coupler knuckle traction surface and a first coupler knuckle pushing surface which are arranged oppositely, and the first coupler knuckle traction surface faces to the coupling matching space. The first coupler knuckle is further provided with an avoiding portion used for avoiding motion interference when the second coupler extends into the coupling matching space, the avoiding portion is located between the first coupling knuckle pushing surface and the top end of the first coupler knuckle, the top end is one end, away from the first coupler body, of the first coupler knuckle, and the avoiding portion is provided with an avoiding space. By the coupler component, coupling interference can be avoided, a gap after the two couplers are coupled is effectively reduced, impact load of the coupler component is reduced, and the coupler component can be prevented from fatigue, damage and breakage.
Description
Technical field
The present invention relates to equipment technology field of transport, more specifically, relate to a kind of draft gear assemblies and vehicle.
Background technology
Hitch be railway vehicle the most basic be also one of most important parts, be installed on the two ends of vehicle, its effect be connect rolling stock, transmit train longitudinal force (tractive force and compressive force).Along with the development of China railways and locomotive & rolling stock industry, for adapting to the traffic requirements of various kinds of vehicles vehicle, China has developed various informative articulated type hitch, and articulated type hitch refers to that hitch contains hook tongue, and hook tongue can rotate the switching that realizes hitch around bearing pin.
As depicted in figs. 1 and 2, hitch comprises coupler body 11 ' and hook tongue 12 ', between coupler body 11 ' and hook tongue 12 ', forms hook adapted space 13 ', and the both sides of coupler body 11 ' are respectively arranged with pullover 11b ' and running-on 11c '.After two hitches connect, by the pullover 11b ' of two hitches, the cooperation of running-on 11c ', make two hitch interlockings, namely pullover 11b ' is fitted to each other and can limits the relative catenary motion of two hitches with running-on 11c ', thereby has reduced hook tongue 12 ' in use because vertical relative motion is compared with the abrasion that produce greatly.In this scheme, in order to ensure that two hitches are smoothly on hook, thereby hook adapted space 13 ' need to be arranged larger, thereby ensure that the hook tongue 12 ' part of hitch can be hooked on together smoothly.But, hook adapted space 13 ' is crossed conference and is caused hitch to connect after extension, because two hitch connecting portions have larger axial clearance (gap even can reach 10mm left and right), along with the raising of train pull weight, vehicle load and running velocity, no matter in train operation or vehicle makes up of trains in operation process, the longitudinal impulse between vehicle will be nonlinear growth.It is larger that particularly the hitch between train is even hung gap, and the impulsive force between train is larger, easily causes the damage of vehicle and parts thereof or produce premature fatigue breakage problem.In addition, after hitch extension, the abrasion of hitch connecting portion have greatly also been aggravated in axial clearance, easily cause hitch and parts thereof to affect hitch in-use performance and cause hitch parts to scrap problem because wearing away greatly, drive ability to train and the in-use performance of hitch produce harmful effect, affect the safe in operation of train.
As can be seen here, in prior art by increase technical scheme that hook adapted space 13 ' ensures that two hitches connect extension smoothly exist connect hang latter two hitch connect hang that gap is large, impact load is strong, fatiguability is impaired, fracture, shortcoming that safety in utilization is low.
Summary of the invention
The present invention aims to provide a kind of draft gear assemblies and vehicle, exists to connect and hangs latter two hitch and connect the problem that gap is large, impact load is strong, fatiguability is impaired of hanging to solve in prior art by increasing technical scheme that hook adapted space ensures that two hitches connect extension smoothly.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of draft gear assemblies, comprise the first hitch and the second hitch that mutual hook coordinates, the first hitch comprises: the first coupler body; The first hook tongue, the first hook tongue is arranged on the first coupler body pivotly, and between the first hook tongue and the first coupler body, be formed for holding the hook adapted space of the second hitch, the first hook tongue has the first hook tongue pulling face and the first hook tongue ejection face that are oppositely arranged, and the first hook tongue pulling face is towards hook adapted space; The first hook tongue also has the portion that dodges that produces movement interference when avoiding the second hitch to stretch in hook adapted space, the portion of dodging is positioned between the first hook tongue ejection face and the top of the first hook tongue, top is one end away from the first coupler body of the first hook tongue, and the portion of dodging has the space of dodging.
Further, the portion of dodging is the groove of dodging on the first hook tongue, dodge groove and have the space of dodging, and the width of dodging groove is greater than the thickness of the second hitch through dodging groove place.
Further, the portion that dodges, for the face of dodging, dodges between face and the second hitch and forms and dodge space.
Further, the first hook tongue ejection face, the second hitch comprises the second coupler body, the second coupler body has the second coupler body ejection face matching with the first hook tongue ejection face, and the second coupler body ejection face and the first hook tongue ejection plane-plane contact.
Further, the first hook tongue ejection face, the second hitch comprises the second coupler body, the second coupler body has the second coupler body ejection face matching with the first hook tongue ejection face, and the first hook tongue ejection face and the second coupler body ejection face are plane.
Further, the second hitch is identical with the first structure of couplers.
Further, the first coupler body has the first coupler body ejection face arranging towards hook adapted space, after the second hitch is connected with the first hitch hook, / 2nd places between the first coupler body ejection face and the second coupler body ejection face are hitch joint face, and the first hook tongue ejection face and the second coupler body ejection face all be arranged in parallel with hitch joint face.
Further, the distance of hitch joint face and the first coupler body ejection face equals the distance of hitch joint face and the first hook tongue ejection face.
Further, the first coupler body comprises the first coupler body ejection face arranging towards hook adapted space, the first hitch also comprises the thickening part for eliminating movement clearance between the first hitch and the second hitch, and thickening part is arranged on the first hook tongue pulling face or the first coupler body ejection face place.
According to another aspect of the present invention, provide a kind of vehicle, comprised draft gear assemblies, draft gear assemblies is above-mentioned draft gear assemblies.
Draft gear assemblies in the present invention comprises the first hitch and the second hitch that mutual hook coordinates, the first hitch comprises the first coupler body and the first hook tongue, the first hook tongue is arranged on the first coupler body pivotly, and between the first hook tongue and the first coupler body, be formed for holding the hook adapted space of the second hitch, the first hook tongue has the first hook tongue pulling face and the first hook tongue ejection face that are oppositely arranged, the first hook tongue pulling face is towards hook adapted space, the first hook tongue also has the portion that dodges that produces movement interference when avoiding the second hitch to stretch in hook adapted space, the portion of dodging is positioned between the first hook tongue ejection face and the top of the first hook tongue, top is one end away from the first coupler body of the first hook tongue, the portion of dodging has the space of dodging.Owing to being provided with the portion of dodging on the first hook tongue, thereby two hitches being connected while hanging, can ensure that the second hitch stretches in hook adapted space smoothly, and without specially hook adapted space being arranged excessive, thereby when interference is hung by the company of avoiding, can also effectively reduce two hitches and connect the gap after hanging, thereby reduce draft gear assemblies impact load, avoid the tired impaired fracture of draft gear assemblies, extended draft gear assemblies service life, ensured the safety in utilization of draft gear assemblies, and then improved the driving safety of train.Meanwhile, the draft gear assemblies in the present invention also has feature simple in structure, low cost of manufacture.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Working state schematic representation when Fig. 1 has schematically shown draft gear assemblies of the prior art and bears longitudinal traction power;
Working state schematic representation when Fig. 2 has schematically shown draft gear assemblies of the prior art and bears longitudinal compression power;
Fig. 3 has schematically shown the structural representation of the first hitch in the present invention;
Fig. 4 has schematically shown the structural representation of the draft gear assemblies in the present invention;
View when Fig. 5 has schematically shown the draft gear assemblies assembling in the present invention; And
Fig. 6 has schematically shown the schematic diagram at the interference position of the second hitch in the present invention.
Reference numeral in figure: 10, the first hitch; 11, the first coupler body; 11a, the first coupler body ejection face; 11b, pullover; 11c, running-on; 12, the first hook tongue; 12a, the first hook tongue pulling face; 12b, the first hook tongue ejection face; 12c, dodge portion; 12d, top; 12e, dodge space; 13, hook adapted space; 20, the second hitch; 21, the second coupler body; 21a, the second coupler body ejection face; 22, the second hook tongue; 22a, interference position; 30, hitch joint face; 11 ', coupler body; 11b ', pullover; 11c ', running-on; 12 ', hook tongue; 13 ', hook adapted space.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The invention provides a kind of draft gear assemblies.As shown in Figures 3 to 6, draft gear assemblies comprises the first hitch 10 and the second hitch 20 that mutual hook coordinates, the first hitch 10 comprises the first coupler body 11 and the first hook tongue 12, the first hook tongue 12 is arranged on the first coupler body 11 pivotly, and between the first hook tongue 12 and the first coupler body 11, be formed for holding the hook adapted space 13 of the second hitch 20, the first hook tongue 12 has the first hook tongue pulling face 12a and the first hook tongue ejection face 12b that are oppositely arranged, and the first hook tongue pulling face 12a is towards hook adapted space 13; The first hook tongue 12 also has the 12c of the portion that dodges that produces movement interference for avoiding the second hitch 20 to stretch into hook adapted space 13 when interior, dodge the 12c of portion between the first hook tongue ejection face 12b and the top 12d of the first hook tongue 12, top 12d is one end away from the first coupler body 11 of the first hook tongue 12, and the portion 12c of dodging has the space of dodging 12e.Owing to being provided with and dodging the 12c of portion on the first hook tongue 12, thereby two hitches being connected while hanging, can ensure that the second hitch 20 stretches in hook adapted space 13 smoothly, and without specially hook adapted space 13 being arranged excessive, thereby when interference is hung by the company of avoiding, can also effectively reduce two hitches and connect the gap after hanging, thereby reduce draft gear assemblies impact load, avoid the tired impaired fracture of draft gear assemblies, extended draft gear assemblies service life, ensured the safety in utilization of draft gear assemblies, and then improved the driving safety of train.Meanwhile, the draft gear assemblies in the present invention also has feature simple in structure, low cost of manufacture.
Preferably, the first hook tongue pulling face 12a is curved surface (please refer to Fig. 3 to Fig. 5).
In preferred implementation as shown in Figure 5, the portion 12c of dodging is the groove of dodging on the first hook tongue 12, dodge groove and have the space of dodging 12e, and the width of dodging groove is greater than the thickness of the second hitch 20 through dodging groove place.Owing to being provided with and dodging groove on the first hook tongue 12, namely increase the installation adapted space between the first hitch 10 and the second hitch 20, thereby made two hitches can connect smoothly extension.Owing to dodging groove between the first hook tongue ejection face 12b and the top 12d of the first hook tongue 12, thereby in easily stressed longitudinal (train working direction of draft gear assemblies, also simultaneously the bearing of trends after two hitches connect) and side direction (perpendicular to longitudinal direction and be positioned at the plane of two the hitches formation) company of there is no hang gap, but in the region that do not stress forming between the stress point of top 12d and the bearing surface of the first hook tongue ejection face 12b arrange dodge groove, thereby can not affect draft gear assemblies company hang reliability.This scheme of dodging groove that arranges on the first hook tongue 12, can ensure the length of the first hook tongue 12 the first hook tongue ejection face 12b of the first hook tongue 12 and contact surface of the second hitch 20 in the time of ejection position, thereby do not reduce, under the prerequisite of area of thrust surface of the first hook tongue ejection face 12b, effectively to avoid draft gear assemblies to produce the concentrated problem of stress because bearing surface is too small in guarantee.As shown in Figure 6, the second hitch 20 comprises that the second hook tongue 22, the second hook tongue 22 places have above-mentioned interference position 22a.
In preferred implementation as shown in Figure 4, dodge the 12c of portion for the face of dodging, dodge between face and the second hitch 20 and form and dodge space 12e.Owing to being provided with the face of dodging on the first hook tongue 12, namely increasing the installation adapted space between the first hitch 10 and the second hitch 20, thereby made two hitches can connect smoothly extension.Because the face of dodging is between the first hook tongue ejection face 12b and the top 12d of the first hook tongue 12, thereby in easily stressed longitudinal (train working direction of draft gear assemblies, also simultaneously the bearing of trends after two hitches connect) and side direction (perpendicular to longitudinal direction and be positioned at the plane of two the hitches formation) company of there is no hang gap, dodge face but form setting in the region that do not stress between the stress point of top 12d and the bearing surface of the first hook tongue ejection face 12b, thereby can not affect company's extension reliability of draft gear assemblies.
The first hook tongue ejection face 12b in the present invention, the second hitch 20 comprises that the second coupler body 21, the second coupler bodies 21 have the second coupler body ejection face 21a matching with the first hook tongue ejection face 12b, and the second coupler body ejection face 21a contacts with the first hook tongue ejection face 12b face.Because the second coupler body ejection face 21a contacts with the first hook tongue ejection face 12b face, thereby in the time that draft gear assemblies is born the tractive force of train longitudinal force, 21 face butts of the second coupler body of the first hook tongue 12 of the first hitch 10 and the second hitch 20, thereby the area of thrust surface of the two are increased, effectively avoid the stress at the two butt place to concentrate, and then ensured the functional reliability of draft gear assemblies.
As shown in Figures 3 to 5, the first hook tongue ejection face 12b, the second hitch 20 comprises that the second coupler body 21, the second coupler bodies 21 have the second coupler body ejection face 21a matching with the first hook tongue ejection face 12b, and the first hook tongue ejection face 12b and the second coupler body ejection face 21a are plane.Because the first hook tongue ejection face 12b and the second coupler body ejection face 21a are plane, thereby the two area of contact while having ensured that the first hitch 10 and the second hitch 20 bear longitudinal traction power, and avoided stress raisers, thereby ensure the power transfer reliability of the first hitch 10 and the second hitch 20.
Preferably, the second hitch 20 is identical with the first hitch 10 structures.Due to the second hitch 20 and the first hitch 10, thereby the second hitch 20 is consistent with the performance of the first hitch 10, thereby makes the two have that matching is good, connection reliability is high, the feature of good operating stability.
The first coupler body 11 in the present invention has the first coupler body ejection face 11a arranging towards hook adapted space 13, after the second hitch 20 is connected with the first hitch 10 hooks, / 2nd places between the first coupler body ejection face 11a and the second coupler body ejection face 21a are that hitch joint face 30, the first hook tongue ejection face 12b and the second coupler body ejection face 21a all be arranged in parallel with hitch joint face 30.Because the first hook tongue ejection face 12b and the second coupler body ejection face 21a all be arranged in parallel with hitch joint face 30, thereby first hook tongue ejection face 12b and all arrange vertical with longitudinal traction power of the second coupler body ejection face 21a, also just in the time that draft gear assemblies is born longitudinal force tractive force, can ensure that the first hook tongue ejection face 12b is stressed identical with the second coupler body ejection face 21a everywhere, thereby avoid the two stress raisers, and then ensured the functional reliability of draft gear assemblies.
In preferred embodiment as shown in Figure 4, the distance of hitch joint face 30 and the first coupler body ejection face 11a equals the distance of hitch joint face 30 and the first hook tongue ejection face 12b.Because the distance of hitch joint face 30 and the first coupler body ejection face 11a equals the distance of hitch joint face 30 and the first hook tongue ejection face 12b, thereby when the second hitch 20 stretch into completely hook adapted space 13 interior after, the second hook tongue 22 and the first coupler body 11 at longitudinal the second hitch 20 do not connect extension axial clearance, thereby ensure that draft gear assemblies can be because even hanging gap produces impact load in the time bearing longitudinal force, and then effectively avoid the tired impaired fracture of draft gear assemblies, extended draft gear assemblies service life, ensured the safety in utilization of draft gear assemblies.
Preferably, the first coupler body 11 comprises the first coupler body ejection face 11a arranging towards hook adapted space 13, the first hitch 10 also comprises the thickening part for eliminating movement clearance between the first hitch 10 and the second hitch 20, and thickening part is arranged on the first hook tongue pulling face 12a or the first coupler body ejection face 11a place.Owing to being provided with thickening part at the first hook tongue pulling face 12a or the first coupler body ejection face 11a place, thereby can effectively make up company between the first hitch 10 and the second hitch 20 and hang gap, make the pulling face of two hitches and move back end face and all fit tightly (connect hang gap be zero), thereby ensure the working stability of draft gear assemblies.It should be noted that, thickening part is set on the first hook tongue pulling face 12a compared with thickening part is set on the first coupler body ejection face 11a, on the first hook tongue pulling face 12a, thickening part is set and can saves the material of half.
The first hitch 10 in the present invention also comprises that the first pullover 11b and the first running-on 11c, the first pullover 11b and the first running-on 11c are separately positioned on the both sides of the first coupler body 11, and the first running-on 11c is concave structure, and the first pullover 11b is convex structure.Similarly, the second hitch 20 also comprises second pullover and the second running-on, second pullover and the second running-on is separately positioned on the both sides of the second coupler body 21, the second running-on is the concave structure coordinating with the first pullover 11b, the second pullover convex structure (please refer to Fig. 3 to Fig. 5) for coordinating with the first running-on 11c.In the time that draft gear assemblies is even hung, because the pullover of two hitches all stretches into corresponding running-on, thereby can limit to a certain extent two even vertical, the side direction relative motions of wagon coupling trip.Certainly, draft gear assemblies does not arrange running-on and pullover yet passable, and just draft gear assemblies does not have an interlock vertical, two hitches connect hang after vertical relative motion larger.
As second aspect of the present invention, provide a kind of vehicle.Vehicle comprises draft gear assemblies, and draft gear assemblies is above-mentioned draft gear assemblies.Interfere, connect and hang that gap is little, impact load is little, indefatigability is impaired, long service life because the draft gear assemblies in the present invention has without connecting to hang, thereby ensured that the company of vehicle hangs reliability, thereby improved the driving safety of vehicle.
Draft gear assemblies in the present invention has to connect hangs the little feature in gap, thereby in the switching process of traction working condition and compression condition, can not hang gap and cause longitudinal impulse, can effectively improve longitudinal direction of car dynamic performance because connecting when vehicle.Along with the raising of trailing weight, vehicle load and the running velocity of vehicle, no matter in vehicle operating or vehicle makes up of trains in operation process, can ensure that the longitudinal impulse between vehicle is basically identical.Due to the company of draft gear assemblies, to hang gap little, thereby effectively avoided the connecting portion of two hitches to relatively rotate, thus avoid hitch junction easily worn away, extended vehicle and draft gear assemblies service life, reduced maintenance workload.
In the present invention, draft gear assemblies is not only applicable to all-purpose vehicle, quick transport vehicle, is applicable to heavy-load transport vehicle yet.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a draft gear assemblies, is characterized in that, comprises the first hitch (10) and the second hitch (20) that mutual hook coordinates, and described the first hitch (10) comprising:
The first coupler body (11);
The first hook tongue (12), described the first hook tongue (12) is arranged on described the first coupler body (11) pivotly, and between described the first hook tongue (12) and described the first coupler body (11), be formed for holding the hook adapted space (13) of described the second hitch (20), described the first hook tongue (12) has the first hook tongue pulling face (12a) and the first hook tongue ejection face (12b) that are oppositely arranged, and described the first hook tongue pulling face (12a) is towards described hook adapted space (13);
Described the first hook tongue (12) also has the portion that dodges (12c) that produces movement interference for avoiding described the second hitch (20) to stretch into described hook adapted space (13) when interior, the described portion (12c) that dodges is positioned between described the first hook tongue ejection face (12b) and the top (12d) of described the first hook tongue (12), described top (12d) is one end away from described the first coupler body (11) of described the first hook tongue (12), described in dodge portion (12c) and there is the space of dodging (12e).
2. draft gear assemblies according to claim 1, it is characterized in that, the described portion (12c) that dodges is for the groove of dodging on described the first hook tongue (12), the described groove of dodging is dodged space (12e) described in having, and described in dodge groove width be greater than the thickness through described described the second hitch (20) of dodging groove place.
3. draft gear assemblies according to claim 1, is characterized in that, described in to dodge portion (12c) be the face of dodging, described in dodge described in forming between face and described the second hitch (20) and dodge space (12e).
4. draft gear assemblies according to claim 1, it is characterized in that, described the first hook tongue ejection face (12b), described the second hitch (20) comprises the second coupler body (21), described the second coupler body (21) has the second coupler body ejection face (21a) matching with described the first hook tongue ejection face (12b), and described the second coupler body ejection face (21a) contacts with described the first hook tongue ejection face (12b) face.
5. draft gear assemblies according to claim 1, it is characterized in that, described the first hook tongue ejection face (12b), described the second hitch (20) comprises the second coupler body (21), described the second coupler body (21) has the second coupler body ejection face (21a) matching with described the first hook tongue ejection face (12b), and described the first hook tongue ejection face (12b) and described the second coupler body ejection face (21a) are plane.
6. according to the draft gear assemblies described in any one in claim 1 to 5, it is characterized in that, described the second hitch (20) is identical with described the first hitch (10) structure.
7. draft gear assemblies according to claim 6, it is characterized in that, described the first coupler body (11) has described the first coupler body ejection face (11a) arranging towards described hook adapted space (13), after described the second hitch (20) is connected with described the first hitch (10) hook, / 2nd places between described the first coupler body ejection face (11a) and described the second coupler body ejection face (21a) are hitch joint face (30), described the first hook tongue ejection face (12b) and described the second coupler body ejection face (21a) all be arranged in parallel with described hitch joint face (30).
8. draft gear assemblies according to claim 7, it is characterized in that, the distance of described hitch joint face (30) and described the first coupler body ejection face (11a) equals the distance of described hitch joint face (30) and described the first hook tongue ejection face (12b).
9. draft gear assemblies according to claim 1, it is characterized in that, described the first coupler body (11) comprises described the first coupler body ejection face (11a) arranging towards described hook adapted space (13), described the first hitch (10) also comprises the thickening part for eliminating movement clearance between described the first hitch (10) and described the second hitch (20), and described thickening part is arranged on described the first hook tongue pulling face (12a) or described the first coupler body ejection face (11a) is located.
10. a vehicle, comprises draft gear assemblies, it is characterized in that, described draft gear assemblies is the draft gear assemblies described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299890.0A CN104029693B (en) | 2014-06-27 | 2014-06-27 | Draft gear assemblies and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299890.0A CN104029693B (en) | 2014-06-27 | 2014-06-27 | Draft gear assemblies and vehicle |
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| Publication Number | Publication Date |
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| CN104029693A true CN104029693A (en) | 2014-09-10 |
| CN104029693B CN104029693B (en) | 2016-08-24 |
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| CN201410299890.0A Active CN104029693B (en) | 2014-06-27 | 2014-06-27 | Draft gear assemblies and vehicle |
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Cited By (4)
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| US9701323B2 (en) | 2015-04-06 | 2017-07-11 | Bedloe Industries Llc | Railcar coupler |
| CN108839664A (en) * | 2018-06-29 | 2018-11-20 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock, hitch and coupler body |
| CN108839665A (en) * | 2018-06-29 | 2018-11-20 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock, hitch and hook body |
| CN108891441A (en) * | 2018-06-29 | 2018-11-27 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock, hitch and hook bolt |
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Cited By (7)
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| CN108839665B (en) * | 2018-06-29 | 2020-06-30 | 中车齐齐哈尔车辆有限公司 | Locomotive, car coupler and coupler body |
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| Publication number | Publication date |
|---|---|
| CN104029693B (en) | 2016-08-24 |
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Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee after: CRRC QIQIHAR VEHICLE CO., LTD. Address before: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee before: Qiqihar Railway Rolling Stock Co., Ltd. |