CN201890593U - Damage-preventing structure for side roll of middle screw pulling device - Google Patents

Abstract

The utility model discloses a damage-preventing structure for side rolls of a middle screw pulling device, comprising a thick wall pipe, a roll shaft and a bearing, wherein the roll shaft passes through the thick wall pipe and the bearing supports the thick wall pipe on the roll shaft; the external side of the bearing is provided with a dual retainer ring, wherein the external retainer ring is heavy retainer ring. The damage-preventing structure adopts the thick wall pipe as a carrier roll, and selects the bearing with large scale; simultaneously, the external side of the bearing is added with the heavy retainer ring and the dual retainer ring is used so as to increase the wear-resistant service life of the roll cylinder surface, enlarge the performance of the roll to bear radial load, and greatly strengthen the bearing axial force of the roll.

Description

The anti-damage structure of middle spiral shell drawing device side roller

Technical field

The utility model relates to the belt conveyer field, the anti-damage structure of particularly middle spiral shell drawing device side roller.

Background technology

Industries such as cement often use the short belt conveyer of two-way conveying because of arts demand, and this belt conveyer adopts the intermediate conveyor screw take-up device to strain adhesive tape usually.The both sides of the middle spiral take-up device little roller that alters course generally adopts thin-walled tube at present, and roller bearing adopts than small dimension, and the outside, single roller two ends respectively has only a back-up ring, and when being subjected to bigger axial force, the easiest quilt of seal ring in the cylindrical shell squeezes bad; Because roller is made changed course usefulness, and the diametral load that roller is subjected to is also big, and is less than normal as bearing, roller is also perishable in addition.The both sides roller usually because of assembling factors such as (or installations), makes roller very easily be subjected to very big axial force, and roller axle is easy to be damaged by pressure to leakproofing material, thereby causes whole roller to be damaged, and needs often to change influence production etc.

The utility model content

Technical problem to be solved in the utility model is to alter course the existing problem of little roller and provide a kind of middle spiral shell drawing device side roller anti-damage structure at the both sides of existing middle spiral take-up device.

Technical problem to be solved in the utility model can be achieved through the following technical solutions:

The anti-damage structure of middle spiral shell drawing device side roller comprises a thick-walled pipe and passes the roll shaft of described thick-walled pipe and described thick-walled pipe is supported on bearing on the described roll shaft, in the arranged outside of described bearing two back-up rings is arranged, wherein outside back-up ring be heavy back-up ring.

The utility model adopts thick-walled pipe as carrying roller, select the big bearing of specification for use, simultaneously increased a heavy back-up ring at the bearing lateral surface, adopt two back-up rings, so not only increased the wear-resisting service life of roller tube skin, strengthened the ability that roller bears radial weight, roller bears axial force and has also obtained great reinforcement.

Description of drawings

Fig. 1 is the structural representation of the anti-damage structure of spiral shell drawing device side roller in the middle of the utility model.

The specific embodiment

Following embodiment further describes the utility model, but described embodiment only is used to illustrate the utility model rather than restriction the utility model.

Middle spiral shell drawing device side roller is as shown in Figure 1 prevented damage structure, comprise a thick-walled pipe 100, in thick-walled pipe 100, offer axis hole 110, roll shaft 200 passes this axis hole 110, whole thick-walled pipe 100 is supported on the roll shaft 200 by two bearings 300, arranged outside at bearing 300 has two back-up rings 410,420, and wherein outside back-up ring 420 is heavy back-up ring.So not only increased the wear-resisting service life of roller tube skin, strengthened the ability that roller bears radial weight, roller bears axial force and has also obtained great reinforcement.

Above content shows and has described groundwork of the present utility model, principal character and advantage of the present utility model.The personnel of the industry should understand; the utility model is not subjected to the restriction of above-mentioned example; that describes in above-mentioned example and the explanation just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all will fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. middle spiral shell drawing device side roller is prevented damage structure, it is characterized in that, comprise a thick-walled pipe and pass the roll shaft of described thick-walled pipe and described thick-walled pipe is supported on bearing on the described roll shaft two back-up rings are arranged in the arranged outside of described bearing, wherein outside back-up ring be heavy back-up ring.

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