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CN-118124629-B - Forging coupler knuckle with special-shaped weight-reducing groove

CN118124629BCN 118124629 BCN118124629 BCN 118124629BCN-118124629-B

Abstract

The invention discloses a forging coupler knuckle with a special-shaped weight-reducing groove, which comprises a main body, wherein an S-shaped connecting surface is arranged on the inner side of the main body, a mounting pin hole and a lifting hole are respectively formed in the main body, the axis of the mounting pin hole is parallel and consistent with that of the lifting hole, two groups of first thickened parts and second thickened parts are respectively arranged on the side wall of the main body, two groups of weight-reducing grooves are formed in the bottom of the main body, and special-shaped inclined grooves are formed in the inner side of the weight-reducing grooves.

Inventors

  • HE YIN
  • HU QIAN
  • CHEN WEI

Assignees

  • 南京中盛铁路车辆配件有限公司

Dates

Publication Date
20260508
Application Date
20240229

Claims (8)

  1. 1. A forging coupler knuckle with special-shaped weight-reducing grooves comprises a main body (1) and is characterized in that an S-shaped connecting surface (6) is arranged on the inner side of the main body (1), a mounting pin hole (2) and a lifting hole (5) are respectively formed in the main body (1), the mounting pin hole (2) is parallel and consistent with the axis of the lifting hole (5), two groups of first thickened parts (3) and second thickened parts (4) are respectively arranged on the side wall of the main body (1), two groups of weight-reducing grooves (7) are formed in the bottom of the main body (1), and special-shaped inclined surface grooves (8) are formed in the inner side of the weight-reducing grooves (7).
  2. 2. The forged coupler knuckle with the special-shaped weight-reducing groove according to claim 1, wherein the tops of the two groups of first thickened portions (3) are provided with arc portions, and the arc portions are concentric with the mounting pin hole (2).
  3. 3. A forged knuckle with a profiled weight reduction groove according to claim 1, characterized in that the thickness of two sets of said second thickened portions (4) is at least 4mm, the thickness of two sets of said first thickened portions (3) is at least 5mm, and the two sets of said second thickened portions (4) and first thickened portions (3) are integrally connected to the side wall of the main body (1).
  4. 4. A forged knuckle with a profiled weight reduction groove according to claim 1, characterized in that two sets of said profiled beveled recesses (8) are provided inside the weight reduction groove (7) in a beveled transition structure.
  5. 5. The forging coupler knuckle with the special-shaped weight-reducing grooves according to claim 1, wherein reinforcing ribs are integrally connected to the bottom of the main body (1), and two groups of weight-reducing grooves (7) are symmetrically arranged at the bottom of the main body (1) in the same extending direction.
  6. 6. The forged coupler knuckle with the special-shaped weight-reducing groove according to claim 1, wherein the S-shaped connecting surface (6) is a forged piece, and an arc-shaped traction curved surface is arranged on the inner side of the S-shaped connecting surface (6).
  7. 7. A forged knuckle with a profiled weight-reduction groove according to claim 2, characterized in that the inner sides of the circular arc portions at the tops of the two sets of first thickened portions (3) are provided with wear-resistant layers.
  8. 8. The forged coupler knuckle with the special-shaped weight-reducing grooves according to claim 1, wherein the concave surfaces of the two groups of weight-reducing grooves (7) are of special-shaped structures, and the inner sides of the two groups of special-shaped structures are in slope surfaces and symmetrically arranged in the same extending direction.

Description

Forging coupler knuckle with special-shaped weight-reducing groove Technical Field The invention relates to the technical field of couplers, in particular to a forged coupler knuckle with a special-shaped weight-reducing groove. Background The coupler knuckle for the railway wagon bears the action of traction load and compression load in operation, the existing forging coupler knuckle weight-reducing groove is a straight groove through type, the weight-reducing effect is achieved on the forging coupler knuckle, and meanwhile, the forging coupler knuckle has better hardenability in quenching; The weight-reducing groove of the conventional straight groove through type structure has the defects that when a coupler knuckle actually works, the bearing pressure is large, the coupler knuckle weight-reducing groove is slightly insufficient in the weight-reducing effect under the action of the continuous bearing pressure, so that the fatigue durability of the forged coupler knuckle is greatly influenced, the service life is short, and the cost is increased due to frequent replacement. Disclosure of Invention The invention aims to provide a forging coupler knuckle with a special-shaped weight-reducing groove, so as to solve the related problems in the prior art. In order to achieve the purpose, the forging coupler knuckle with the special-shaped weight-reducing groove comprises a main body, wherein an S-shaped connecting surface is arranged on the inner side of the main body, a mounting pin hole and a lifting hole are respectively formed in the main body, the mounting pin hole is parallel and consistent with the axis of the lifting hole, two groups of first thickened parts and second thickened parts are respectively arranged on the side wall of the main body, two groups of weight-reducing grooves are formed in the bottom of the main body, and special-shaped inclined surface grooves are formed in the inner side of the weight-reducing grooves. Preferably, the tops of the two groups of first thickened parts are provided with arc parts, and the arc parts are concentric with the first connecting hole. Preferably, the thickness of the two groups of second thickened parts is at least 4mm, the thickness of the two groups of first thickened parts is at least 5mm, and the two groups of second thickened parts and the first thickened parts are integrally connected to the side wall of the main body. Preferably, the two groups of special-shaped inclined surface grooves are arranged on the inner side of the weight reduction groove in a slope transition structure. Preferably, the bottom of main part integration is connected with the strengthening rib, two sets of subtract heavy groove is the same extending direction symmetry setting in the bottom of main part. Preferably, the S-shaped connecting surface is a forging piece, and an arc traction curved surface is arranged on the inner side of the S-shaped connecting surface. Preferably, wear-resistant layers are arranged on the inner sides of the arc parts at the tops of the two groups of first thickened parts. Preferably, the concave surfaces of the two groups of weight-reducing grooves are in special-shaped structures, and the inner sides of the two groups of special-shaped structures are in slope surface states and are symmetrically arranged in the same extending direction. Compared with the prior art, the invention provides the forging coupler knuckle with the special-shaped weight-reducing groove, which has the following beneficial effects: According to the invention, through the transition structures of the two groups of concave slope surfaces, the weight-reducing system of the conventional straight groove through structure is changed, and the direction angle of the weight-reducing groove and the transition position of the slope surface on the inner side are improved, so that the special-shaped weight-reducing groove body is utilized, the wear degree of the two groups of concave slope surfaces is reduced, the fatigue property and the service life of the weight-reducing structure are prolonged, the weight-reducing effect of the forged coupler knuckle is improved, and the fatigue life of the forged coupler knuckle is greatly prolonged. Drawings FIG. 1 is a first perspective view of the present invention; FIG. 2 is a second perspective view of the present invention; FIG. 3 is a third perspective view of the present invention; FIG. 4 is a graph comparing an old weight-loss cell with a new weight-loss cell of the present invention. In the figure, 1, a main body, 2, a mounting pin hole, 3, a first thickening part, 4, a second thickening part, 5, a lifting hole, 6, an S-shaped connecting surface, 7, a weight reducing groove and 8, a special-shaped inclined surface groove. Detailed Description 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 d