CN100344899C

CN100344899C - Combined assembled pulley

Info

Publication number: CN100344899C
Application number: CNB200410023924XA
Authority: CN
Inventors: 孙平
Original assignee: Qingdao Port Group Co Ltd
Current assignee: Qingdao Port Group Co Ltd
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2007-10-24
Anticipated expiration: 2024-04-16
Also published as: CN1683809A

Abstract

The present invention relates to a combined assembling type pulley which provides a new pulley combining structure. The present invention realizes the separating type design of each component of a pulley and simultaneously ensures that the components are tightly connected, and the hidden danger of loosing caused by large loads can not occur. The combined assembling type pulley mainly comprises a bearing supporting body (a pulley center shaft and a bearing are arranged in the middle position of the bearing supporting body), a main spoke, an auxiliary spoke and a wheel rim, wherein the bearing supporting body and the main spoke are cast into an integrative structure.

Description

Combined assembly type pulley

Technical Field

The invention relates to a novel pulley improvement scheme which has a combined assembly structure and is applied to large-scale hoisting or transportation equipment.

Background

At present, the pulley component with a larger outline is generally adopted on large-scale hoisting and transporting equipment applied to industrial and mining enterprises, ports, stations and other places. Because the existing large pulley is generally manufactured by casting or rolling process, if the spoke and the wheel rim of the integral pulley are of an integral structure, the wheel rim is easily damaged after long-time use, and the stability of the pulley component is affected. The replacement of the entire pulley due to damage to the rim not only results in a significant capital waste, but also the entire replacement process is time consuming and labor intensive. Particularly, when the pulley is applied to large-scale equipment such as a port ship unloader, a portal crane and the like, the pulley has a large profile, so that long maintenance time is required, long-time production stoppage is caused, and the installation and maintenance are difficult.

A prior patent publication, No. 98235555, discloses a fabricated pulley, which mainly comprises a pulley groove, a spoke and a wheel core, which are respectively designed on the whole design, and are assembled into a pulley. Designing the wheel core into a net cylinder shape, and installing a bearing in the cylinder; the pair of spokes are separated from the wheel groove, the middle part of each spoke is in convex cylindrical transition fit with the wheel core, and the supporting part of each spoke is provided with a plurality of bolt holes; the whole wheel groove is divided into three equal parts, bolt holes corresponding to the spokes are formed in the tail of the wheel groove, and the spokes and the wheel groove are connected through bolts.

The pulley groove, the spoke and the wheel core are designed and processed separately in the design of the existing pulley, and a maintenance mode of replacing the pulley groove independently can be realized, but the existing pulley has the following obvious defects and shortcomings:

the pair of spokes are separated from the wheel core respectively and are in transition fit through the raised cylinders in the middle of the spokes, so that the spokes, the wheel core and the wheel groove are only fastened through bolts. To using on large-scale load equipment, its connection structure is comparatively fragile, can appear after a long time that the emergence is loosened and influence safety in production between the connection structure. Under the premise of generally selecting alloy steel plate materials, the pulley is still lack of anti-slip and anti-drop acting force in the radial direction and the transverse direction.

Disclosure of Invention

The invention aims to solve the problems and the defects of the combined assembly type pulley and provides a novel pulley combined structure. The split type design of each part of the pulley is realized, and meanwhile, the potential safety hazard that each part is tightly connected and cannot be loosened due to large load is guaranteed.

The invention relates to a combined assembly type pulley which mainly comprises a bearing support body, a main spoke, an auxiliary spoke and a rim. Wherein,

in order to ensure the tight connection between the wheel spoke and the wheel rim, one of the key points of the invention is to cast the bearing support body and the main spoke into an integral structure.

And auxiliary spokes which are symmetrically arranged with the main spokes and are connected with the wheel rim together are separately designed with the bearing support body.

The main spoke and the auxiliary spoke are symmetrically provided with a plurality of bolt holes along the circumferential direction of the bearing support body in opposite directions. The shape of the auxiliary spoke is the same as that of the main spoke, the auxiliary spoke and the rim are fixedly connected to the main spoke together through bolt fastening force, and the rim is clamped and fastened between the main spoke and the auxiliary spoke.

The rim is bisected into two symmetrical parts, and the outer periphery thereof is provided with a sprocket groove.

In order to ensure that the connecting and fastening force among the main spoke, the auxiliary spoke and the wheel rim is enough to deal with larger load capacity, the invention has the other key point that a plurality of convex columns are arranged on the main spoke and/or the auxiliary spoke, and a plurality of pairs of radial shear-resisting blocks and positioning shear-resisting blocks are correspondingly arranged at the corresponding positions of the wheel rim.

Through the interaction of the convex columns and the anti-shearing blocks, after the wheel rim is clamped and fastened between the main spoke and the auxiliary spoke for installation, even if the load is large, micro displacement between the wheel rim and the main spoke and between the wheel rim and the auxiliary spoke can be effectively prevented, so that the loosening phenomenon can be prevented to the maximum extent, and the safety production is ensured.

The above is the main improvement of the invention.

As described above, the assembled pulley of the present invention has the following advantages and advantageous effects:

1. the main spoke and the bearing support body are designed into an integrated structure, and the main spoke is connected and fixed with the auxiliary spoke and the wheel rim, so that the fastening effect is good, and the looseness is not easy to occur;

2. the mutual structure of the spoke convex columns and the wheel rim shear blocks can further ensure that the whole pulley structure is stable and static mutually and the safety production coefficient is higher on the premise of larger load capacity.

Drawings

The invention will now be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the assembled pulley;

fig. 2 is a schematic view of the cross-sectional structure taken along line a-a of fig. 1 after rotation through 90 °.

As shown in fig. 1-2, the pulley mainly comprises a bearing support body 1, a main spoke 2, an auxiliary spoke 3, a rim 4, spoke bolts 21, spoke protruding columns 22, a sprocket groove 41, radial shear blocks 42 and positioning shear blocks 43.

Detailed Description

Embodiment 1, as shown in fig. 1 to 2, the assembled pulley according to the present invention mainly comprises a bearing support body 1, a main spoke 2, an auxiliary spoke 3, and a rim 4. Wherein,

the bearing support 1 and the main spoke 2 are cast as an integral structure, while the sub-spoke 3 is provided separately from the bearing support 1.

The main spoke 2 and the auxiliary spoke 3 are symmetrically provided with a plurality of bolts 21 along the circumferential direction of the bearing support body oppositely, the auxiliary spoke 3 and the rim 4 are fixedly connected on the main spoke 2 together through bolt fastening force, and the rim 4 is clamped and fastened between the main spoke 2 and the auxiliary spoke 3.

The rim 4 is bisected into two symmetrical parts and is provided with a sprocket groove 41 at its outer periphery.

The main spoke 2 and the auxiliary spoke 3 are provided with a plurality of convex columns 22, and correspondingly, a plurality of pairs of radial shear blocks 42 and positioning shear blocks 43 are arranged at corresponding positions of the wheel rim 4.

Through the interaction of the convex columns 22 and the shear blocks 42 and 43, after the wheel rim 4 is clamped and fastened between the main spoke 2 and the auxiliary spoke 3, even if the load is large, the micro displacement between the wheel rim 4 and the main spoke 2 and the auxiliary spoke 3 can be effectively prevented, and the loosening phenomenon can be prevented.

The above is the structure scheme of the combined assembly pulley of the invention.

Claims

1. The utility model provides a combination assembled pulley, mainly including bearing support body, main spoke, vice spoke and rim, its characterized in that: the bearing support body and the main spoke are cast into an integrated structure, the auxiliary spoke and the bearing support body are separately arranged, the rim is designed to be provided with two symmetrical parts, the outer periphery of the rim is provided with a chain wheel groove, a plurality of convex columns are formed on the main spoke and/or the auxiliary spoke, and a plurality of pairs of radial shear blocks and positioning shear blocks are correspondingly arranged on the rim.