CN2328644Y

CN2328644Y - Assembled pulley

Info

Publication number: CN2328644Y
Application number: CN 98235555
Authority: CN
Inventors: 石新华
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-07
Filing date: 1998-04-07
Publication date: 1999-07-14
Anticipated expiration: 2008-04-07

Abstract

The utility model relates to an assembled pulley which is used for factories, harbors and mines. In the assembled pulley, a wheel core, wheel spokes and a wheel groove are separately designed, and a pair of wheel spokes are matched with the wheel core in the transitional way; the wheel groove of a whole part is divided by trisection and is easy to assemble and disassemble, and the wheel groove is connected with the wheel spoke with screw bolts; due to the adoption of split type, the abandonment of the pulley is avoided because of the abrasion of the wheel groove. The utility model has advantages of material saving, the prolonging of the service life of the pulley, convenient maintenance, low cost, the improvement of work efficiency, etc.

Description

The build-up type pulley

The utility model relates to industrial pulley.

At present, the pulley of industrial use is broadly divided into casting and roll forming two big classes, and this two classes pulley structurally spoke and race fuse, in use, race very easily weares and teares, owing to the damage of race causes scrapping of whole pulley.

The purpose of this utility model is to propose a kind of build-up type pulley, this pulley in design, with pulley groove, spoke and core wheel design respectively, separately processing, general assembly then, form the build-up type pulley, make pulley in use, unlikely because the wearing and tearing of pulley groove cause scrapping of whole pulley, thereby saving in material is raised the efficiency.

The utility model is to realize like this, core wheel is cylindric, in the tube bearing is installed, a pair of spoke separates with race, spoke middle part protruding column shape and core wheel transition fit, the spoke support section has several bolts hole, and whole race is divided into three equal parts, the wheel slot tail is provided with the bolt hole with the spoke correspondent equal, by bolt spoke is connected with race.

Further specify below in conjunction with accompanying drawing:

Fig. 1 is the utility model constructional drawing, and wherein 1 is shading ring, and 2 is core wheel, and 3 is end cap, and 4 is spoke, and 5 is tie bolt, and 6 is race.

With reference to accompanying drawing 1, further specify.

The core wheel of build-up type pulley is according to the different purposes of pulley, the high-quality steel are selected in design for use, be processed into the garden tubular, be designed for the installation bearing in the tube of garden, tube outer design in garden is used to install the pulley width of cloth, every pulley has two pulley width of cloth, the centre of the pulley width of cloth is designed to and the identical hole of pulley core external diameter, the outer rim design of the pulley width of cloth has 12 holes, select the higher alloy-steel plate of intensity (steel plate thickness is relevant with the load-carrying capacity of pulley) for use, transition fit (can install locating dowel pin additional in case of necessity) is made with pulley core external diameter in repressed shaping back, and its outer rim support zone can be used for installing pulley groove.The pulley groove design adopts cast steel or cast iron (or magnesium iron) as main material, designs by existing " hoist design specification ".It is that with the difference of the pulley groove that uses at present it is not a complete circle, is cut into some equal portions by line and it is designed to whole after processing, and the design is three equal parts, makes it easy to removal and installation.Pulley groove afterbody design simultaneously has 12 holes, can be convenient to be connected with pulley width of cloth outer rim.After above part processing is intact, can begin general assembly, earlier a pair of pulley width of cloth is pressed into the pulley core, refill three pulley grooves in the middle of a pair of pulley width of cloth outer rim, tighten with 12 cover bolts, as needs, be equipped with bearing and end cap again, a pulley is promptly accused and is finished.

In the use of pulley, the front said that pulley groove wore and tore easily and is to be difficult to avoid, if behind the pulley groove wear and tear overrun, only need back out tie bolt, extract the pulley groove of damage, change new pulley groove and get final product, and needn't be as the pulley that uses at present: earlier the pulley that damages is removed from the pulley axle bed, pull down end cap and bearing etc., load onto bearing again on new pulley, the sheave shaft of packing into is contained on the pulley axle bed at last.Pulley of dismounting is not a thing easily, particularly in aloft work, also needs lifting gear to match sometimes.The build-up type pulley saves time, laborsaving.Simultaneously,, and be unlikely,, only cause it to scrap because of the pulley groove wearing and tearing even the pulley width of cloth and pulley core are still intact as present circumstances because the pulley width of cloth and pulley core etc. also can continue use.Under nominal situation, the pulley width of cloth and pulley core are to damage not too easily, and their service life is tens times of service life of pulley groove normally, can find out that thus the build-up type pulley can save repair time, saving in material, reduce labor intensity and cost-cutting.

Even under improper operating mode, accidentally the pulley width of cloth is damaged (pulley groove, pulley core still intact), can utilize 4 apertures that are arranged at its inner rim, use special tool that it is pulled out from the pulley core, change the new pulley width of cloth and get final product.Even the pulley core can be changed just in case damage in the same old way.

In addition,, increased the inertia of pulley rotation, can reduce the wearing and tearing of steel rope and pulley greatly, can prolong the service life of build-up type pulley and steel rope because the design of the weight of build-up type pulley concentrates on the end of pulley.

Claims

1. build-up type pulley, core wheel, spoke, race and bearing, back-up ring, end cap etc. are arranged, it is characterized in that a pair of spoke separates with race, spoke middle part protruding column shape and core wheel transition fit, there are some bolts hole at its support section edge, whole race is divided into three equal parts, and the wheel slot tail is provided with the same footpath bolt hole that equates with the spoke number and by bolt spoke is connected with race.