CN201961925U - Steel wire rope pulley - Google Patents

Abstract

The utility model relates to a system component of an elevator door, in particular to a guide steel wire rope pulley. The utility model aims at the problems that the steel wire rope in the existing elevator door system is easy to slide and lose control, so looseness and detachment are caused after long-term use, and provides the steel wire rope pulley, which comprises a bearing, a bearing outer ring and a plastic outer ring of a rope pulley, wherein the outer surface of the bearing outer ring and the inner surface of the plastic outer ring of the rope pulley are respectively provided with a concave structure and a convex structure which are wedged with each other, accordingly, the bearing outer ring is effectively prevented from sliding, the problems of looseness and detachment which are caused by long-term sliding use are avoided, and moreover, the abnormal operation problem of a door system is further solved.

Description

A kind of wire rope pulley

Technical field

The utility model relates to a kind of elevator car door system member, especially relates to a kind of wire rope pulley of guiding.

Background technology

In elevator car door system, the wire rope pulley of guiding is very general part.Existing technology is to adopt the standard rolling bearing outside and plastic injection-moulded bonding, because outside race is smooth, thus can be loosening after the long-term use, skid, break away from, cause door system running mal.Reliable in order to guarantee it, non-slip inefficacy need improve metal and plastics combination, guarantees the use of product sustainable high efficiency.

The utility model content

The utility model is at the inefficacy of skidding easily of steel rope in the present elevator car door system, the problem that long-term use is become flexible, come off, a kind of wire rope pulley is provided, comprise bearing, outside race and rope sheave plastic outer ring, described outside race outside face and rope sheave plastic outer ring inside face are provided with the concaveconvex structure that agrees with mutually.Owing to be provided with the concaveconvex structure that agrees with mutually at outside race outside face and rope sheave plastic outer ring inside face, so it is plastic injection-moulded with the structure that is fixed as one stable between the bearing, little relative movement between the two, the generation that prevents to skid, and then solved because loosening, the disengaging problem of skidding and causing.

Produce as a kind of being convenient to, the structure that has good interlock effect again, the described concaveconvex structure that agrees with mutually is the protruding square structure that is arranged at the square groove of outside race outside face and is arranged at rope sheave plastic outer ring inside face, so be equivalent to set up and prevent the frictional groove that skids at the outside race outside face, when plastic injection-moulded projective structure embeds the frictional groove of outside race outside face, plastic injection-moulded more stable with the mutual interlock of outside race, better reduced relative motion between the two, thereby efficiently solve owing to becoming flexible that relative motion causes, skid, the disengaging problem, and then solved consequent door system abnormal problem that turns round.

In sum, the beneficial effects of the utility model are conspicuous.Adopted after the structure of novel bearing described in the utility model, can prevent effectively that outside race from skidding, avoided using loosening, the disengaging problem cause, and then solved door system abnormal problem that turns round owing to skid for a long time.

Description of drawings

Fig. 1 is wire rope pulley structural section figure.

Fig. 2 is not for installing the wire rope pulley structural section figure of rope sheave plastic outer ring.

Wherein 1-bearing, 2-outside race, 3-frictional groove, 4-occlusion structure, 5-rope sheave plastic outer ring.

The specific embodiment

Embodiment 1

As shown in Figure 1, on the outer ring 2 of bearing 1, be provided with concave structure, this concave structure is to be used for the frictional groove 3 that is used with occlusion structure 4, because the occlusion structure 4 and the rope sheave plastic outer ring 5 of convex door are integrated, and be positioned at the inside face of rope sheave plastic outer ring 5 as shown in fig. 1, thus it is embedded frictional groove 3, thus finish the fixedly operation of occlusion structure 4 and frictional groove 3.In the elevator operation process, because this wire rope pulley structure centre bearer 1 is to be fixed together with rope sheave plastic outer ring 5, so both move simultaneously, there is not mutual relative motion, the problem of skidding that effectively prevents so cause, therefore avoided because skid together loosening, disengaging problem mutually, thereby prevented the door system that causes thus abnormal generation of turning round.

Must explanation be the application of the explanation of above-mentioned implementation example and unrestricted creation, only illustrative principle of the present utility model and effect, but not be used to limit protection domain of the present utility model.Rights protection scope of the present utility model should be described in claims.

Claims (2)

1. a wire rope pulley comprises bearing, outside race and rope sheave plastic outer ring, it is characterized in that: described outside race outside face and rope sheave plastic outer ring inside face are provided with the concaveconvex structure that agrees with mutually.

2. a kind of wire rope pulley as claimed in claim 1 is characterized in that: the described concaveconvex structure that agrees with mutually is the protruding square structure that is arranged at the square groove of outside race outside face and is arranged at rope sheave plastic outer ring inside face.

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