CN209856347U

CN209856347U - Crane pulley

Info

Publication number: CN209856347U
Application number: CN201920215686.4U
Authority: CN
Inventors: 吴向前; 郑家庆; 宁娟
Original assignee: Dress Bohai Machinery Equipment Dalian Co Ltd
Current assignee: Dress Bohai Machinery Equipment Dalian Co Ltd
Priority date: 2019-02-20
Filing date: 2019-02-20
Publication date: 2019-12-27
Anticipated expiration: 2029-02-20

Abstract

The utility model relates to a loop wheel machine pulley. The outer web ring is arranged on the outer side of the inner ring and is formed by butting inwards bent plate rings, the side edge of the inner ring is provided with a convex ring, a gap at the butt joint of the bottom edges of the two plate rings and the side edge of the inner ring is welded and filled, a fixed steel ring is arranged at the butt joint of the outer web ring, the inner surfaces of the two plate rings at the butt joint of the fixed steel ring and the outer web ring are externally tangent, and a gap between the fixed steel ring and the inner surfaces of the two plate rings is welded and filled. The utility model has simpler structure, reduces the complexity of manufacture and reduces the manufacturing cost; the number of welding seams is reduced, so that the deformation caused by the welding residual stress is reduced; the shape of the plate ring effectively enhances the support strength of the outer web structure.

Description

Crane pulley

Technical Field

The utility model relates to a loop wheel machine technical field, specifically speaking relate to loop wheel machine pulley.

Background

The crane pulley plays a role in guiding and supporting a steel wire rope of the crane, when the crane is used for hoisting, the steel wire rope generates a large extrusion force on the pulley, and the pulley needs to have a strong supporting force. The existing crane pulley participates in the attached figure 2 of the specification, an inner ring 01 and an outer ring 02 of the existing crane pulley are arranged in a split mode, the inner ring 01 and the outer ring 02 are connected and supported by a web plate 03, and a welding point at the joint of the outer ring and the web plate is easy to crack and break under the extrusion of a steel wire rope.

Disclosure of Invention

An object of the utility model is to solve above-mentioned problem, provide loop wheel machine pulley, its simple structure solves outer web upper portion welding point fracture problem.

In order to solve the above problem, the utility model discloses a technical scheme as follows:

the crane pulley comprises an inner ring 1 and an outer web ring 2, wherein the outer web ring 2 is arranged on the outer side of the inner ring 1, and the crane pulley is characterized in that the outer web ring 2 is formed by butting inwards bent plate rings 21, the side edge of the inner ring 1 is provided with a convex ring 11, the distance between the bottom edges of the two plate rings 21 is consistent with the width of the convex ring 11, the bottom edges of the plate rings 21 incline downwards from outside to inside, a gap at the butt joint of the bottom edges of the two plate rings 21 and the side edge of the inner ring 1 is filled by welding, a fixed steel ring 3 is arranged at the butt joint 22 of the outer web ring, the inner surfaces of the two plate rings at the butt joint of the fixed steel ring 3 and the outer web ring are circumscribed, and the gap.

Compared with the prior art, the utility model has the beneficial characteristics that:

(1) the utility model has simpler structure, reduces the complexity of manufacture and reduces the manufacturing cost;

(2) compared with the outer ring arc pressing process in the prior art, the plate ring is easier to bend and press inwards, and the angle is easy to control;

(3) the number of welding seams is reduced, so that the deformation caused by the welding residual stress is reduced;

(4) the gap welding filling area between the fixed steel ring and the inner surfaces of the two plate rings is increased, the supporting strength of the outer web ring structure is enhanced, the fixed steel ring is subjected to a vertically downward force of the steel wire rope and a vertically upward and obliquely force of the two plate rings, the fixed steel ring is stressed in a balanced manner, and the cracking problem at the position is reduced;

(5) the fixed steel ring plays a role in connecting and supporting the outer abdominal ring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Description of the drawings:

FIG. 1 is a schematic view of the structure of a crane pulley of the present invention;

FIG. 2 is a schematic view of a bottom structure of a prior art crane sheave;

FIG. 3 is a stress exploded view of the crane pulley of the present invention;

reference numerals: an inner ring-1, a convex ring-11, an outer web ring-2, a plate ring-21, an outer web ring butt joint-22 and a fixed steel ring-3;

inner ring-01, outer ring-02 and web-03.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

Referring to the description as shown in figure 1 of the drawings,

a crane pulley comprises an inner ring 1 and an outer web ring 2, wherein the outer web ring 2 is arranged on the outer side of the inner ring 1, the outer web ring 2 is formed by butting inwards bent plate rings 21, a convex ring 11 is arranged on the side edge of the inner ring 1, the distance between the bottom edges of the two plate rings 21 is consistent with the width of the convex ring 11, the bottom edges of the plate rings 21 incline downwards from outside to inside, a gap at the butt joint of the bottom edges of the two plate rings 21 and the side edge of the inner ring 1 is filled by welding, the convex ring plays a role in limiting and supporting the inner part of the bottom edges of the two plate rings 21, the gap welding point plays a role in fixing the outer part of the bottom edges of the two plate rings 21, a fixed steel ring 3 is arranged at the butt joint of the outer web ring 22, the inner surfaces of the two plate rings at the butt joint of the fixed steel ring 3 and the outer web ring are externally tangent, the.

In the specific embodiment, the fixed steel ring is formed by welding round steel; the plate ring is formed by pressing a high-strength plate; the inner ring is formed by mechanically processing a high-strength steel casting blank.

Referring to the attached figure 3 in the specification, a steel wire rope extrudes a fixed steel ring downwards, the inner surfaces of two plate rings at the butt joint of the fixed steel ring and an outer web ring are externally tangent, the inner surfaces of the two plate rings at the butt joint of the outer web ring are external tangent lines of the fixed steel ring, and the inner surfaces of the two plate rings at the butt joint of the outer web ring apply vertical and oblique upward extrusion force to the fixed steel ring, so that the fixed steel ring is uniformly stressed, and the problem of cracking at a welding position is reduced; the welding contact area is increased compared with the prior art, thereby increasing the supporting strength of the outer abdominal ring.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred embodiments of the present invention, and the present invention is not limited by the above preferred embodiments, and various changes and modifications can be made without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the present invention as claimed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The crane pulley comprises an inner ring (1) and an outer web ring (2), wherein the outer web ring (2) is arranged on the outer side of the inner ring (1), and is characterized in that the outer web ring (2) is formed by butt joint of inward bent plate rings (21), the side edge of the inner ring (1) is provided with a convex ring (11), the distance between the bottom edges of the two plate rings (21) is consistent with the width of the convex ring (11), the bottom edges of the plate rings (21) incline downwards from outside to inside, a gap at the butt joint of the bottom edges of the two plate rings (21) and the side edge of the inner ring (1) is welded and filled, the butt joint (22) of the outer web ring is provided with a fixed steel ring (3), the inner surfaces of the two plate rings at the butt joint of the fixed steel ring (3) and the outer web ring are circumscribed, and the gap between the fixed steel ring.