CN112918505A

CN112918505A - Coupler knuckle push iron of coupler and coupler with same

Info

Publication number: CN112918505A
Application number: CN202110316291.5A
Authority: CN
Inventors: 金朋迪; 孟庆民; 陈龙
Original assignee: CRRC Qiqihar Rolling Stock Co Ltd
Current assignee: CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-06-08
Anticipated expiration: 2041-03-24
Also published as: CN112918505B

Abstract

The invention provides a coupler knuckle push iron of a coupler and a coupler with the same, wherein the coupler knuckle push iron is arranged on a coupler body of the coupler and can drive a coupler knuckle of the coupler to move to a full-open position, and the coupler knuckle push iron comprises: a rotating shaft; the coupler knuckle push iron leg is connected with the rotating shaft and comprises an inner side wall and an outer side wall, and the inner side wall and the outer side wall both comprise a plurality of sections of arc-shaped surfaces; the lock seat is connected with the rotating shaft; the push iron kick is arranged at one end of the knuckle push iron leg far away from the rotating shaft, wherein when the knuckle is positioned at the full-open position, the inner side wall is contacted with the lower traction table of the hook body. By the technical scheme, the problem that the coupler cannot be unlocked or locked due to deformation of the coupler knuckle push iron in the prior art is effectively solved.

Description

Coupler knuckle push iron of coupler and coupler with same

Technical Field

The invention relates to a railway vehicle connecting device, in particular to a coupler knuckle push iron of a coupler and the coupler with the coupler knuckle push iron.

Background

At present, articulated automatic couplers are widely used in railway freight cars, and as shown in fig. 1 to 3, couplers in the prior art mainly include a coupler body 60, a knuckle 70, a latch mechanism, and a knuckle pusher shown in fig. 3. The coupler knuckle push iron mainly comprises a rotating shaft 1, coupler knuckle push iron legs 2, a lock seat 3 and push iron kicking feet 4. Knuckle 70 has a knuckle push iron face 71, a knuckle tail end 72 and a lower pulling flange 73. The hook body 60 includes a lower pulling platform 61 and the like, and the lower pulling platform 61 can be brought into contact with the lower pulling flange 73 of the knuckle 70.

The coupler can be switched between a fully open position and a locking position, and the working principle of the coupler from the opening position to the fully open position is as follows: the knuckle push iron rotates, the push iron kick foot 4 of the knuckle push iron acts on a knuckle push iron surface 71 of the knuckle 70 to drive the knuckle 70 to rotate around the knuckle pin until the full-open stop of the knuckle 70 contacts with the full-open stop of the hook body, and the knuckle 70 rotates to the outward maximum position. As shown in fig. 4, when the knuckle 70 is in the fully open position, there is a gap between the lower traction table 61 and the knuckle push iron. The working principle of the car coupler locking is as follows: the knuckle 70 rotates inward around the knuckle pin from the fully open position, the knuckle push iron surface 71 of the knuckle 70 acts on the push iron kick foot 4 of the knuckle push iron to drive the knuckle push iron to rotate until the knuckle tail end 72 contacts the knuckle tail bearing wall of the hook body 60, and the knuckle 70 rotates to the inward maximum position.

In the prior art, as shown in fig. 5, a knuckle push iron leg 2 of the knuckle push iron is of an arc-shaped structure, wherein the center of the inner arc surface and the center of the outer arc surface of the knuckle push iron leg 2 intersect at a point O. In operation, parts can wear away, and the motion trail of the knuckle push iron deviates from the original design, so that the knuckle push iron is stressed and bent to deform. As shown in fig. 6, there may be two cases of deformation of the knuckle push iron.

One is the inward-shrinkage bending deformation (inward-shrinkage state in fig. 6), the coupler knuckle push iron rotates too much outwards, the push iron kick foot 4 of the coupler knuckle push iron is separated from the coupler knuckle push iron surface 71 of the coupler knuckle 70, the coupler knuckle push iron cannot be driven to move when the coupler knuckle 70 turns from the fully-open position to the locking position, and interference is generated between the coupler knuckle push iron and the coupler knuckle 70, so that the coupler cannot be locked; the other condition is outward bulging bending deformation (outward bulging state in fig. 6), the outer side of the coupler knuckle push iron leg and the inner wall of the inner cavity of the coupler body 60 accommodating the coupler knuckle push iron form a contact fulcrum, the coupler knuckle 70 drives the coupler knuckle push iron to generate outward bulging bending deformation, and the coupler knuckle push iron props against the coupler knuckle 70 to enable the coupler knuckle to be incapable of rotating when the coupler is unlocked, so that the coupler cannot be unlocked. The coupler knuckle push iron is bent and deformed, so that the phenomenon that the coupler cannot be unlocked or locked can be caused, the transportation organization efficiency is reduced, the coupler knuckle push iron is bent and deformed beyond the use limit and needs to be replaced, and the coupler overhaul quantity and the overhaul cost are increased.

Disclosure of Invention

The invention mainly aims to provide a coupler knuckle push iron of a coupler and the coupler with the same, so as to solve the problem that the coupler cannot be unlocked or locked due to deformation of the coupler knuckle push iron in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a knuckle push iron of a coupler, provided on a coupler body of the coupler, the knuckle push iron being capable of driving a knuckle of the coupler to move to a fully open position, the knuckle push iron including: a rotating shaft; the coupler knuckle push iron leg is connected with the rotating shaft and comprises an inner side wall and an outer side wall, and the inner side wall and the outer side wall both comprise a plurality of sections of arc-shaped surfaces; the lock seat is connected with the rotating shaft; the push iron kick is arranged at one end of the knuckle push iron leg far away from the rotating shaft, wherein when the knuckle is positioned at the full-open position, the inner side wall is contacted with the lower traction table of the hook body.

Further, the inside wall includes first arcwall face, second arcwall face and third arcwall face, and first arcwall face, second arcwall face and third arcwall face set gradually push away indisputable and play between sufficient and the pivot, and wherein, the radius of first arcwall face is less than the radius of second arcwall face, and the radius of third arcwall face is less than the radius of first arcwall face.

Further, the radius R1 of the first arc-shaped face satisfies: r1 is more than or equal to 40mm and less than or equal to 60mm, and the radius R2 of the second arc-shaped surface meets the following requirements: r2 is more than or equal to 50mm and less than or equal to 70mm, and the radius R3 of the third arc-shaped surface meets the following requirements: r3 is more than or equal to 20mm and less than or equal to 40mm, and/or the central angle C of the first arc-shaped surface satisfies the following conditions: c is more than or equal to 50 degrees and less than or equal to 70 degrees, and the central angle D of the second arc-shaped surface meets the following requirements: d is more than or equal to 15 degrees and less than or equal to 35 degrees, and the central angle E of the third arc-shaped surface meets the following requirements: e is more than or equal to 25 degrees and less than or equal to 45 degrees.

Further, the lateral wall includes fourth arcwall face, fifth arcwall face and sixth arcwall face, and fourth arcwall face, fifth arcwall face and sixth arcwall face set gradually push away indisputable and play between sufficient and the pivot, and wherein, the radius of fourth arcwall face is less than the radius of fifth arcwall face, and the radius of sixth arcwall face is less than the radius of fourth arcwall face.

Further, the radius R4 of the fourth arc-shaped face satisfies: r4 is more than or equal to 60mm and less than or equal to 80mm, and the radius R5 of the fifth arc-shaped surface meets the following requirements: r5 is more than or equal to 80mm and less than or equal to 100mm, and the radius R6 of the sixth arc-shaped surface meets the following requirements: r6 is more than or equal to 40mm and less than or equal to 50mm, and/or the central angle F of the fourth arc-shaped surface satisfies the following conditions: f is more than or equal to 55 degrees and less than or equal to 75 degrees, and the central angle G of the fifth arc-shaped surface meets the following requirements: g is more than or equal to 20 degrees and less than or equal to 40 degrees, and the central angle H of the sixth arc-shaped surface meets the following requirements: h is more than or equal to 25 degrees and less than or equal to 45 degrees.

Further, the difference between the radius R4 of the fourth arc-shaped face and the radius R1 of the first arc-shaped face satisfies: R4-R1 are more than or equal to 15mm and less than or equal to 35mm, and the difference between the radius R5 of the fifth arc-shaped surface and the radius R2 of the second arc-shaped surface satisfies the following conditions: R5-R2 is more than or equal to 25mm and less than or equal to 45 mm.

Further, the ratio between the radius R4 of the fourth arc-shaped face and the radius R1 of the first arc-shaped face satisfies: 1.4 is not less than R4/R1 is not less than 1.8, and the ratio of the radius R5 of the fifth arc-shaped surface to the radius R2 of the second arc-shaped surface satisfies the following conditions: 1.3 and R5/R2 and 1.7, and the ratio of the radius R2 of the second arc-shaped surface to the radius R1 of the first arc-shaped surface satisfies the following conditions: R2/R1 is more than or equal to 1.1 and less than or equal to 1.3.

Furthermore, the coupler knuckle push iron also comprises an avoidance concave part arranged between the coupler knuckle push iron leg and the lock seat.

Further, a first distance A is formed between the lowest point of the upper surface of the avoidance concave part and the bottom surface of the coupler knuckle push iron leg, and the first distance A satisfies the following conditions: a is more than or equal to 9mm and less than or equal to 14 mm.

According to another aspect of the invention, a coupler is provided, which comprises a coupler body and a coupler knuckle push iron arranged on the coupler body, wherein the coupler knuckle push iron is the coupler knuckle push iron.

The coupler further comprises a coupler knuckle and a coupler knuckle pin, wherein one end of the coupler body is provided with an accommodating cavity, the tail end of the coupler knuckle is arranged in the accommodating cavity, and the coupler knuckle is hinged with the coupler body through the coupler knuckle pin; the coupler knuckle push iron is arranged between the coupler knuckle and the coupler body, and the coupler knuckle push iron is hinged with the coupler body; the coupler knuckle also comprises a coupler knuckle iron pushing surface matched with the iron pushing kick foot of the coupler knuckle iron pushing surface, and the iron pushing kick foot can drive the coupler knuckle to move to a full-open position through matching with the coupler knuckle iron pushing surface.

Furthermore, the coupler knuckle is provided with a coupler knuckle tail end stop end, the coupler knuckle tail end stop end can be matched with an inner wall stop of the containing cavity of the coupler body when the coupler knuckle is located at the locking position, and a gap is formed between the outer side wall of the coupler knuckle push iron and the inner wall of the containing cavity.

By applying the technical scheme of the invention, the coupler knuckle push iron comprises a rotating shaft, a coupler knuckle push iron leg, a lock seat and a push iron kick foot. Wherein, coupler knuckle pushes away indisputable leg and includes inside wall and lateral wall, and inside wall and lateral wall all include the multistage arcwall face. When the coupler knuckle is located at the full-open position, the lower traction table of the coupler body can contact with the inner side wall to stop the coupler knuckle push iron, so that the coupler knuckle push iron cannot excessively rotate, and the condition that the push iron kicks enough to be separated from the coupler knuckle push iron surface of the coupler knuckle is avoided. The structure ensures that the iron pushing kick foot of the coupler knuckle iron pusher is always in contact with the surface of the coupler knuckle iron pusher in the process of opening the coupler to the full-open position, thereby ensuring that the coupler knuckle iron pusher can be driven to move on a designed track when the coupler knuckle rotates to the locking position, and effectively solving the problem that the coupler cannot be unlocked or locked due to deformation of the coupler knuckle iron pusher in the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view illustrating a knuckle push iron of a coupler in the prior art;

FIG. 2 illustrates a schematic perspective view of a coupler body of a prior art coupler;

FIG. 3 illustrates a schematic perspective view of a knuckle of a prior art coupler;

FIG. 4 is a schematic cross-sectional view of a prior art coupler illustrating the knuckle in a fully open position;

FIG. 5 shows a top view of the knuckle pusher iron of FIG. 1;

FIG. 6 is a schematic view showing a deformed state of the knuckle push iron of FIG. 1;

FIG. 7 shows a schematic top view of an embodiment of a knuckle push iron according to the present invention;

FIG. 8 shows a dimensional schematic of the knuckle pusher iron of FIG. 7;

FIG. 9 shows a front view of the knuckle pusher iron of FIG. 7;

FIG. 10 shows a schematic cross-sectional view of an embodiment of a coupler according to the present invention with the knuckle in a fully open position;

FIG. 11 is a schematic cross-sectional view of the knuckle of the coupler of FIG. 10 in a locked position; and

fig. 12 shows an enlarged view at i in fig. 11.

Wherein the figures include the following reference numerals:

in the prior art:

1. a rotating shaft; 2. the coupler knuckle pushes the iron leg; 3. a lock seat; 4. pushing iron to kick feet; 60. a hook body; 61. a lower traction table; 62. an accommodating chamber; 70. a knuckle; 71. the coupler knuckle pushes the iron surface; 72. the tail end of the coupler knuckle; 73. a lower traction flange; 80. a latch pin;

in the present application:

10. a rotating shaft; 20. the coupler knuckle pushes the iron leg; 21. an inner sidewall; 211. a first arc-shaped surface; 212. a second arcuate surface; 213. a third arc-shaped surface; 22. an outer sidewall; 221. a fourth arc-shaped surface; 222. a fifth arc-shaped surface; 223. a sixth arc-shaped surface; 30. a lock seat; 40. pushing iron to kick feet; 50. avoiding the concave part;

60. a hook body; 61. a lower traction table; 62. an accommodating chamber; 70. a knuckle; 71. the coupler knuckle pushes the iron surface; 72. the tail end of the coupler knuckle; 73. a lower traction flange; 80. a latch pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 7 and 10, the coupler knuckle push iron of the coupler of the present embodiment is disposed on the coupler body 60 of the coupler, and the coupler knuckle push iron can drive the coupler knuckle 70 of the coupler to move to the fully open position. The knuckle push iron comprises: the rotary shaft 10, the knuckle push iron leg 20, the lock seat 30 and the push iron kick foot 40. Wherein, knuckle pushes away iron leg 20 and is connected with pivot 10, and knuckle pushes away iron leg 20 and includes inside wall 21 and lateral wall 22, and inside wall 21 and lateral wall 22 all include the multistage arcwall face. The push iron kick foot 40 is arranged at one end of the knuckle push iron leg 20 far away from the rotating shaft 10. When the knuckle 70 is in the fully open position, the inner side wall 21 contacts the lower pull tab 61 of the hook body 60.

By applying the technical scheme of the embodiment, the coupler knuckle push iron comprises a rotating shaft 10, a coupler knuckle push iron leg 20, a lock seat 30 and a push iron kick foot 40. Wherein, knuckle pushes away indisputable leg 20 and includes inside wall 21 and lateral wall 22, and inside wall 21 and lateral wall 22 all include the multistage arcwall face. When the coupler knuckle is located at the fully opened position, the lower traction table 61 of the coupler body 60 can contact with the inner side wall 21 to stop the coupler knuckle push iron, so that the coupler knuckle push iron cannot excessively rotate, and the condition that the push iron kicks the foot 40 to be separated from the coupler knuckle push iron surface 71 of the coupler knuckle 70 is avoided. The structure ensures that the push iron kick foot 40 of the coupler knuckle push iron is always contacted with the coupler knuckle push iron surface 71 in the process of opening the coupler to the full-open position, thereby ensuring that the coupler knuckle 70 can be driven to move on a designed track when rotating to the locking position, and effectively solving the problem that the coupler cannot be unlocked or locked due to deformation of the coupler knuckle push iron in the prior art.

As shown in fig. 10 and 11, the present application further provides a coupler, an embodiment of which includes a coupler body 60, a knuckle 70, a knuckle pin 80, and the knuckle thrower described above. One end of the hook body 60 is provided with a receiving cavity 62, the tail end of the coupler knuckle 70 is arranged in the receiving cavity 62, and the coupler knuckle 70 is hinged with the hook body 60 through a coupler knuckle pin 80. The knuckle push iron is arranged between the knuckle 70 and the hook body 60, and the knuckle push iron is hinged with the hook body 60. Knuckle 70 also includes a knuckle pusher face 71 that mates with a pusher kick foot 40 of the knuckle pusher, which pusher kick foot 40 is capable of driving knuckle 70 to move to a fully open position through mating with knuckle pusher face 71.

As shown in fig. 11 and 12, the latch 70 has a latch tail end 72, and when the latch 70 is in the locking position, the latch tail end 72 can be engaged with the inner wall of the receiving cavity 62 of the hook body 60, and there is a gap between the outer side wall 22 of the latch driver and the inner wall of the receiving cavity 62. A gap is formed between the outer side wall 22 of the coupler knuckle push iron and the inner wall of the accommodating cavity 62, so that the outer side wall 22 cannot be in contact with the inner wall of the accommodating cavity 62 to form a contact fulcrum when the coupler knuckle push iron is in a locking position, the coupler knuckle push iron cannot interfere with the stop matching of the coupler knuckle tail end 72 and the inner wall of the accommodating cavity 62 of the coupler body 60, the coupler knuckle 70 can rotate to the locking position, and the coupler can normally work.

As shown in fig. 8, in the knuckle push iron of the present embodiment, the inner side wall 21 includes a first arc surface 211, a second arc surface 212, and a third arc surface 213, and the first arc surface 211, the second arc surface 212, and the third arc surface 213 are sequentially disposed between the iron push kick foot 40 and the rotating shaft 10, wherein a radius of the first arc surface 211 is smaller than a radius of the second arc surface 212, and a radius of the third arc surface 213 is smaller than a radius of the first arc surface 211. The radius of second arcuate surface 212 is greater than the radius of first arcuate surface 211, enabling the knuckle pusher to move knuckle 70 open to the fully open position. As shown in fig. 8, if the radius of the second arc-shaped surface 212 is too large, the second arc-shaped surface 212 is closer to the connection line between the push iron kick foot 40 and the rotating shaft 10, that is, moves downwards in fig. 8, so that the inner side wall 21 of the knuckle push iron contacts with the end surface of the lower traction table 61 too early, which may cause the knuckle push iron not to drive the knuckle 70 to be completely opened, and the coupling of the coupler is affected. The radius of the third arc-shaped surface 213 is smaller than that of the first arc-shaped surface 211, and if the radius of the third arc-shaped surface 213 is too large, the inner side wall 21 of the knuckle push iron will move downwards and contact with the end surface of the lower traction table 61 prematurely, and coupling of the coupler is affected. Meanwhile, if the radius of the third arc-shaped surface 213 is too large, the wall thickness of the coupler knuckle push iron is locally large, and the coupler knuckle push iron is easily interfered with the coupler lock during the coupler motion process. Of course, the radius of the third arc-shaped surface 213 cannot be too small, and the radius of the third arc-shaped surface 213 is to make the second arc-shaped surface 212 and the planar section of the inner sidewall 21 of the knuckle pusher smoothly transition, so as to avoid the local stress concentration of the knuckle pusher.

As shown in fig. 8, the radius R1 of the first arc-shaped surface 211 satisfies: r1 is more than or equal to 40mm and less than or equal to 60mm, and the radius R2 of the second arc-shaped surface 212 satisfies the following conditions: r2 is more than or equal to 50mm and less than or equal to 70mm, and the radius R3 of the third arc-shaped surface 213 satisfies the following condition: r3 is more than or equal to 20mm and less than or equal to 40 mm; the central angle C of the first arc-shaped face 211 satisfies: c is more than or equal to 50 degrees and less than or equal to 70 degrees, and the central angle D of the second arc-shaped surface 212 meets the following conditions: d is more than or equal to 15 degrees and less than or equal to 35 degrees, and the central angle E of the third arc-shaped surface 213 meets the following requirements: e is more than or equal to 25 degrees and less than or equal to 45 degrees. The inner side wall 21 of the knuckle push iron leg 20 is formed by three arc-shaped surfaces, and the first arc-shaped surface 211, the second arc-shaped surface 212 and the third arc-shaped surface 213 are in smooth transition, so that stress concentration is avoided, and the stress of the knuckle push iron is more uniform. Preferably, R1 is 45mm, 50mm or 55mm, and R2 is 55mm, 60mm or 65 mm. R3 ═ 25mm, 30mm or 35 mm. Preferably, C is 55 °, 60 ° or 65 °. D20 °, 25 °, or 30 °, E30 °, 32 °, 35 °, or 40 °. After experimental tests, it is found that when R1 is 50mm, R2 is 60mm, R3 is 30mm, C is 55 °, D is 30 ° and E is 32 °, the knuckle leg push iron of the present embodiment achieves replacement of the existing knuckle push iron, assembly and motion tests of the coupler are qualified, and the problem of inward bending of the knuckle push iron during operation can be effectively avoided. The coupler knuckle push iron of the embodiment can be completely exchanged with the existing coupler knuckle push iron, and other parts of the coupler do not need to be replaced. The inner side wall 21 of the knuckle push iron leg 20 is formed by connecting three arc-shaped surfaces, and on the premise that the knuckle push iron can drive the knuckle 70 to rotate, the inner side wall 21 is closer to a connecting line between the push iron kick foot 40 and the rotating shaft 10 than the inner side wall 21 of the knuckle push iron in the prior art when in a fully open position as shown in fig. 10, so that the inner side wall 21 can be in contact with the end surface of the lower traction table 61. When the knuckle 70 is in the fully open position, the end surface of the lower traction table 61 contacts the inner side wall 21 capable of stopping the knuckle push iron leg 20, so that the knuckle push iron cannot rotate continuously.

As shown in fig. 8, the outer sidewall 22 includes a fourth arc surface 221, a fifth arc surface 222 and a sixth arc surface 223, which are sequentially disposed between the push iron kick foot 40 and the rotating shaft 10, wherein the radius of the fourth arc surface 221 is smaller than the radius of the fifth arc surface 222, and the radius of the sixth arc surface 223 is smaller than the radius of the fourth arc surface 221. Fourth arcwall face 221 corresponds the setting with first arcwall face 211 on the inside wall 21, fifth arcwall face 222 corresponds the setting with the second arcwall face 212 of inside wall, sixth arcwall face 223 corresponds the setting with the third arcwall face 213 of inside wall 21, consequently fourth arcwall face 221, the radius relation between fifth arcwall face 222 and the sixth arcwall face 223 should be consistent with first arcwall face 211, the radius relation between second arcwall face 212 and the third arcwall face 213, can make the coupler knuckle push iron's wall thickness more even like this. As shown in fig. 8, the radius of the fifth arc-shaped surface 222 cannot be too small, which would cause the outer sidewall 22 to be closer to the connecting line between the push iron kick foot 40 and the rotating shaft 10, i.e. move downwards in fig. 8, thereby reducing the thickness of the knuckle push iron leg 20 and affecting the overall structural strength of the knuckle push iron. If the radius of the fifth arc-shaped surface 222 is too large, the outer side wall 22 will be far away from the connecting line between the iron pushing kick foot 40 and the rotating shaft 10, i.e. move upwards in fig. 8, and the outer side wall 22 of the knuckle iron pushing leg 20 will abut against the inner wall of the accommodating cavity 62 of the hook body 60 during locking, so that the outward expansion and deformation of the knuckle iron pushing leg cannot be solved. The too small radius of the sixth arc-shaped surface 223 may cause local stress concentration of the knuckle push iron, and if the radius of the sixth arc-shaped surface 223 is too large, the sixth arc-shaped surface 223 may be far away from the line between the push iron kick foot 40 and the rotating shaft 10, i.e. may move upwards in fig. 8, and when the latch is locked, the outer side wall 22 of the knuckle push iron leg 20 abuts against the inner wall of the accommodating cavity 62 of the hook body 60, and thus the latch push iron cannot solve the outward expansion deformation.

As shown in fig. 8, the radius R4 of the fourth arc-shaped surface 221 satisfies: r4 is more than or equal to 60mm and less than or equal to 80mm, and the radius R5 of the fifth arc-shaped surface 222 meets the following requirements: r5 is more than or equal to 80mm and less than or equal to 100mm, and the radius R6 of the sixth arc-shaped surface 223 meets the following requirements: r6 is more than or equal to 40mm and less than or equal to 50 mm; the central angle F of the fourth arc-shaped surface 221 satisfies: f is more than or equal to 55 degrees and less than or equal to 75 degrees, and the central angle G of the fifth arc-shaped surface 222 meets the following conditions: g is more than or equal to 20 degrees and less than or equal to 40 degrees, and the central angle H of the sixth arc-shaped surface 223 meets the following requirements: h is more than or equal to 25 degrees and less than or equal to 45 degrees. The outer side wall 22 of the knuckle push iron leg 20 is formed by three arc-shaped surfaces, and the fourth arc-shaped surface 221, the fifth arc-shaped surface 222 and the sixth arc-shaped surface 223 are in smooth transition, so that stress concentration is avoided, and the stress of the knuckle push iron is more uniform. Meanwhile, on the premise that the size requirement that the coupler knuckle push iron can drive the coupler knuckle 70 to rotate is met, when the coupler knuckle push iron is in the locking position as shown in fig. 11, compared with the outer side wall of the coupler knuckle push iron in the prior art, the outer side wall of the outer side wall 22 is far away from the inner surface, abutted and matched with the coupler body 60 and the coupler knuckle 70, and the outer side wall 22 of the coupler knuckle push iron cannot interfere with the matching between the coupler knuckle 70 and the coupler body 60, so that the coupler can normally work.

As shown in fig. 8, the difference between the radius R4 of the fourth arc-shaped surface 221 and the radius R1 of the first arc-shaped surface 211 satisfies: 15mm ≦ R4-R1 ≦ 35mm, and the difference between the radius R5 of the fifth arc-shaped face 222 and the radius R2 of the second arc-shaped face 212 is satisfied: R5-R2 is more than or equal to 25mm and less than or equal to 45 mm. The difference between the radius R4 of the fourth arc-shaped surface 221 and the radius R1 of the first arc-shaped surface 211 and the difference between the radius R5 of the fifth arc-shaped surface 222 and the radius R2 of the second arc-shaped surface 212 enable the coupler knuckle push iron to meet the strength requirement in the operation process, and meanwhile, the coupler knuckle push iron is guaranteed not to interfere with the coupler body 60 in the operation process to affect the normal operation of the coupler. It should be noted that when R4-R1 > 35mm and R5-R2 > 45mm, it may cause the outer side wall 22 of the latch push iron leg 20 to abut against the inner wall of the accommodating cavity 62 of the hook body 60 during locking, and there is a gap between the latch tail end 72 and the inner wall of the accommodating cavity 62 of the hook body 60, so that the latch 70 cannot reach the locking position; alternatively, before the knuckle 70 reaches the fully open position, the inner side wall 21 of the knuckle push iron leg 20 abuts against the lower traction table 61, and the knuckle 70 cannot reach the fully open position. When R4-R1 is less than 15mm, R5-R2 is less than 25mm, the strength of the knuckle push iron is low, and the knuckle push iron is easy to deform under impact in the using process, so that the normal use is influenced. Preferably, R4-R1-25 mm, R5-R2-35 mm.

As shown in fig. 8, the ratio between the radius R4 of the fourth arc-shaped surface 221 and the radius R1 of the first arc-shaped surface 211 satisfies: R4/R1 is more than or equal to 1.4 and less than or equal to 1.8, the dimensional relationship can ensure the wall thickness of the knuckle push iron leg 20 and the structural strength of the knuckle push iron leg 20, and the ratio of the radius R5 of the fifth arc-shaped surface 222 to the radius R2 of the second arc-shaped surface 212 satisfies the following conditions: R5/R2 is more than or equal to 1.3 and less than or equal to 1.7, the dimensional relationship can ensure the wall thickness of the knuckle push iron leg 20 and the structural strength of the knuckle push iron leg 20, and the ratio of the radius R2 of the second arc-shaped surface 212 to the radius R1 of the first arc-shaped surface 211 satisfies the following conditions: R2/R1 is more than or equal to 1.1 and less than or equal to 1.3, and the size relationship can ensure the position where the inner side wall 21 of the knuckle push iron is abutted with the lower traction table 61. Due to the arrangement of the sizes, the coupler knuckle push iron can meet the strength requirement in the operation process, and meanwhile, the coupler knuckle push iron cannot interfere with the coupler body 60 in the operation process to influence the normal operation of the coupler.

In other feasible embodiments, the inner side wall of the knuckle push iron leg may also include two arc surfaces or more than three arc surfaces, and the outer side wall of the knuckle push iron leg may also include two arc surfaces or more than three arc surfaces, as long as the knuckle push iron can drive the knuckle to rotate to the fully open position, and meanwhile, the inner side wall can contact with the lower traction table of the hook body in the fully open position, and a space is formed between the outer side wall and the inner wall of the hook body accommodating cavity in the locking position.

The inner side wall 21 and the outer side wall 22 both comprise a plurality of sections of arc-shaped surfaces, so that the inward shrinkage and outward expansion bending deformation caused by stress in the application and coupling process of the coupler can be prevented, and the problem of poor coupling or non-locking of the coupler is solved. Can realize complete interchange with the existing coupler knuckle push iron, and meets the requirement of railway vehicle speed-up heavy-load transportation. The overhaul cost and the labor cost are reduced, and the overhaul efficiency and the transportation organization efficiency are improved.

The knuckle push iron further comprises an escape recess 50 disposed between the knuckle push iron leg 20 and the lock base 30. When knuckle 70 is in the locked position, as shown in fig. 11, the tail of knuckle 70 overlaps knuckle push iron leg 20 and push iron kick foot 40 in a plane perpendicular to the plane of the paper. Due to the arrangement of the avoidance concave part 50, the coupler knuckle push iron can avoid the coupler knuckle 70, the interference between the coupler knuckle 70 and the coupler knuckle push iron is avoided, and the normal operation of the coupler is ensured.

As shown in fig. 9, a first distance a is provided between the lowest point of the upper surface of the avoidance concave portion 50 and the bottom surface of the knuckle push iron leg 20, and the first distance a satisfies: a is more than or equal to 9mm and less than or equal to 14 mm. The above-mentioned dimensioning ensures the structural strength. When A is less than 9mm, the strength of the coupler knuckle push iron can be reduced, and the coupler knuckle push iron is easy to deform under impact in the operation process, so that the normal use is influenced. When A is larger than 14mm, the knuckle push iron may contact the knuckle 70 so that the knuckle 70 cannot rotate to the locking position, and the knuckle push iron may deform to affect the normal use of the coupler. Preferably, a is 12 mm.

The coupler knuckle push iron of the embodiment can be completely exchanged with the existing coupler knuckle push iron (the distance between the kicking foot and the rotating shaft of the coupler knuckle push iron of the embodiment and the distance between the kicking foot and the rotating shaft of the push iron of the coupler knuckle push iron of the prior art are the same), the operation mode of the existing coupler and the normal action performance of the coupler are not changed, and the results of finite element comparative analysis show that the structural strength is equivalent to the existing structural strength. The problem of bending deformation of the knuckle push iron is solved, and the hook can be realized by improving the structures of the hook body and the knuckle, but the improvement cost of the knuckle push iron is relatively low, and the replacement and improvement period is short. The coupler knuckle push iron can meet the increasing requirements of the running speed and the traction tonnage of a railway freight car, reduces the occurrence of bending faults in the use of the coupler knuckle push iron, ensures the coupling performance and the action performance of a car coupler and a car, ensures the application safety of a train, and reduces the workload and the cost of application and maintenance.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coupler knuckle push iron of a coupler is arranged on a coupler body (60) of the coupler and can drive a coupler knuckle (70) of the coupler to move to a full-open position, and the coupler knuckle push iron is characterized by comprising:

a rotating shaft (10);

the knuckle push iron leg (20) is connected with the rotating shaft (10), the knuckle push iron leg (20) comprises an inner side wall (21) and an outer side wall (22), and the inner side wall (21) and the outer side wall (22) both comprise a plurality of sections of arc-shaped surfaces;

the lock seat (30) is connected with the rotating shaft (10);

a push iron kick foot (40) which is arranged at one end of the knuckle push iron leg (20) far away from the rotating shaft (10),

wherein the inner side wall (21) is in contact with a lower traction table (61) of the hook body (60) when the knuckle (70) is in the fully open position.

2. The knuckle push iron according to claim 1, wherein the inner side wall (21) comprises a first arc-shaped surface (211), a second arc-shaped surface (212) and a third arc-shaped surface (213), the first arc-shaped surface (211), the second arc-shaped surface (212) and the third arc-shaped surface (213) are sequentially arranged between the push iron kick foot (40) and the rotating shaft (10), wherein the radius of the first arc-shaped surface (211) is smaller than that of the second arc-shaped surface (212), and the radius of the third arc-shaped surface (213) is smaller than that of the first arc-shaped surface (211).

3. The knuckle pusher iron of claim 2,

the radius R1 of the first arc-shaped surface (211) satisfies: r1 is more than or equal to 40mm and less than or equal to 60mm, and the radius R2 of the second arc-shaped surface (212) satisfies the following conditions: r2 is more than or equal to 50mm and less than or equal to 70mm, and the radius R3 of the third arc-shaped surface (213) meets the following conditions: r3 is more than or equal to 20mm and less than or equal to 40mm, and/or

The central angle C of the first arc-shaped surface (211) satisfies: c is more than or equal to 50 degrees and less than or equal to 70 degrees, and the central angle D of the second arc-shaped surface (212) satisfies the following conditions: d is more than or equal to 15 degrees and less than or equal to 35 degrees, and the central angle E of the third arc-shaped surface (213) meets the following conditions: e is more than or equal to 25 degrees and less than or equal to 45 degrees.

4. The knuckle push iron according to claim 2, wherein the outer side wall (22) comprises a fourth arc-shaped surface (221), a fifth arc-shaped surface (222) and a sixth arc-shaped surface (223), the fourth arc-shaped surface (221), the fifth arc-shaped surface (222) and the sixth arc-shaped surface (223) are sequentially arranged between the push iron kick foot (40) and the rotating shaft (10), wherein the radius of the fourth arc-shaped surface (221) is smaller than that of the fifth arc-shaped surface (222), and the radius of the sixth arc-shaped surface (223) is smaller than that of the fourth arc-shaped surface (221).

5. The knuckle pusher iron of claim 4,

the radius R4 of the fourth arc-shaped face (221) satisfies: r4 is more than or equal to 60mm and less than or equal to 80mm, and the radius R5 of the fifth arc-shaped surface (222) satisfies the following conditions: 80mm ≦ R5 ≦ 100mm, and a radius R6 of the sixth arc-shaped face (223) satisfies: r6 is more than or equal to 40mm and less than or equal to 50mm, and/or

The central angle F of the fourth arc-shaped surface (221) satisfies: f is more than or equal to 55 degrees and less than or equal to 75 degrees, and the central angle G of the fifth arc-shaped surface (222) satisfies the following conditions: g is more than or equal to 20 degrees and less than or equal to 40 degrees, and the central angle H of the sixth arc-shaped surface (223) meets the following conditions: h is more than or equal to 25 degrees and less than or equal to 45 degrees.

6. The knuckle push iron according to claim 4, characterized in that the difference between the radius R4 of the fourth arc-shaped face (221) and the radius R1 of the first arc-shaped face (211) is such that: 15mm ≦ R4-R1 ≦ 35mm, the difference between the radius R5 of the fifth arcuate face (222) and the radius R2 of the second arcuate face (212) satisfying: R5-R2 is more than or equal to 25mm and less than or equal to 45 mm.

7. The knuckle push iron according to claim 4, characterized in that the ratio between the radius R4 of the fourth arc-shaped face (221) and the radius R1 of the first arc-shaped face (211) is such that: 1.4 ≦ R4/R1 ≦ 1.8, the ratio between the radius R5 of the fifth arc-shaped face (222) and the radius R2 of the second arc-shaped face (212) satisfying: 1.3R 5/R2 1.7, the ratio between the radius R2 of the second curved face (212) and the radius R1 of the first curved face (211) being such that: R2/R1 is more than or equal to 1.1 and less than or equal to 1.3.

8. The knuckle pusher iron according to any one of claims 1 to 7, further comprising an escape recess (50) disposed between the knuckle pusher leg (20) and the lock seat (30).

9. The knuckle pusher iron according to claim 8, wherein a first distance a is provided between a lowest point of an upper surface of the avoiding recess (50) and a bottom surface of the knuckle pusher leg (20), and the first distance a satisfies: a is more than or equal to 9mm and less than or equal to 14 mm.

10. A coupler, characterized in that, includes a coupler body (60) and a coupler knuckle push iron arranged on the coupler body (60), the coupler knuckle push iron is the coupler knuckle push iron of any one of claims 1 to 9.

11. The coupler of claim 10, further comprising a knuckle (70) and a knuckle pin (80), wherein,

an accommodating cavity (62) is formed in one end of the hook body (60), the tail end of the coupler knuckle (70) is arranged in the accommodating cavity (62), and the coupler knuckle (70) is hinged with the hook body (60) through a coupler knuckle pin (80);

the knuckle push iron is arranged between the knuckle (70) and the hook body (60), and the knuckle push iron is hinged with the hook body (60);

the coupler knuckle (70) further comprises a coupler knuckle iron pushing surface (71) matched with an iron pushing kick foot (40) of the coupler knuckle iron pushing surface, and the iron pushing kick foot (40) can drive the coupler knuckle (70) to move to a full-open position through matching with the coupler knuckle iron pushing surface (71).

12. The coupler of claim 10,

the coupler knuckle (70) is provided with a coupler knuckle tail end stop end (72), when the coupler knuckle (70) is located at a locking position, the coupler knuckle tail end stop end (72) can be matched with an inner wall stop of an accommodating cavity (62) of the coupler body (60), and a gap is reserved between the outer side wall (22) of the coupler knuckle push iron and the inner wall of the accommodating cavity (62).