CN2053201U - Centrifugally blocked safety rope sheave - Google Patents

Abstract

The utility model designs a centrifugally clamping and blocking safety rope sheave, comprising a casing, a rope sheave, an oil wire rope, a rope feeding spring, and a safety brake mechanism. The principle of the utility model is that the centrifugal clamping block hinged on the rope sheave throws outwards under the action of the centrifugal force generated by the high-speed rotation of the rope sheave, extending into the clamping and blocking outer ring of the casing, being blocked by a front stop block and a back stop block, and the goal of safety braking can be realized. The utility model has the advantages of simple structure, safety, light weight, and low cost.

Description

Centrifugally blocked safety rope sheave

The utility model belongs to a kind of rope sheave of protecting personal safety, is applicable to aloft work scenes such as mine, electric power and building.

Industry high and medium operations such as mine, building and electric power are dangerous big, and human casualty accident easily takes place, and the existing safety strap that uses is telescopic adjustment easily, limited operating personnel's operating range, can not satisfy the needs of real work.

The purpose of this utility model is to provide a kind of centrifugal blocked safety rope sheave that can regulate rope lengths and energy safety arrestment according to need of work.

The centrifugal blocked safety of the utility model design-calculated rope sheave is made of housing, rope sheave, oil thread rope, time rope spring and safety arrestment mechanism.Go back to the left and right sides that rope spring and safety arrestment mechanism are installed in the rope sheave disc respectively.Safety arrestment mechanism is made of two centrifugal fixture blocks, four preceding stop blocks and four backstops, and the tail end hinge joint of centrifugal fixture block is on the rope sheave disc, and anchor point departs from the center of circle, and the two ends of two centrifugal fixture blocks interconnect with spring.Have four preceding stop blocks that 90 degree distribute on the inboard of housing, preceding stop block is positioned at the outer ring of centrifugal fixture block.Have four backstops that 90 degree distribute on the rope sheave disc, backstop is positioned at preceding stop block outer ring.

The safety arrestment principle of centrifugal blocked safety rope sheave is: in normal circumstances, when oil thread rope was pulled out at a slow speed from rope sheave, before two centrifugal fixture blocks are under the spring tension effect in the inner ring of stop block, so the rope sheave rotation can not braked by jam; When personnel's landing takes place when, oil thread rope is pulled out fast, the rope sheave fast rotational, centrifugal fixture block is under action of centrifugal force, overcome spring tension, outwards throw away, centrifugal fixture block is subjected to the stopping and withstood by the backstop on the rope sheave disc again immediately of preceding stop block on the housing at once, thereby realizes safety arrestment.Centrifugal fixture block can rely on spring to recover normal working after the rope sheave safety arrestment.

The advantage of the centrifugal blocked safety rope sheave that the utility model proposes is:

1, safe in utilization, convenient, oil thread rope can stretch as required during normal operation, adapting to different scope of work, improves the operation work efficiency, in case when slipping, rope sheave can safety arrestment, thereby guarantees operating personnel's personal safety.

2, volume little (φ 170 * 40), (4 kilograms) in light weight, the oil thread rope stretched length reaches 10 meters.

3, simple in structure, easy to manufacture, cost is low.

Fig. 1 is the structural representation of centrifugal blocked safety rope sheave.

The utility model is further described with embodiment below in conjunction with accompanying drawing:

Centrifugal blocked safety rope sheave is made of housing 6, rope sheave 4, oil thread rope, time rope spring 5 and safety arrestment mechanism, as shown in Figure 1.Return rope spring and safety arrestment mechanism be installed in respectively the rope sheave disc about two surveys.An end that returns the rope spring is fixed on the ring shaft base, and the other end is fixed on the rope sheave wheel hub.Safety arrestment mechanism is by two centrifugal fixture blocks 2, four preceding stop blocks 3 and four backstops 1 constitute, the tail end hinge joint of centrifugal fixture block 2 is on the rope sheave disc, anchor point departs from center of circle 45mm, and the two ends of two centrifugal fixture blocks 2 interconnect with spring, and centrifugal fixture block is in the inner ring of preceding stop block 3.Be fixed with four preceding stop blocks 3 that 90 degree distribute on the inboard of housing, preceding stop block 3 is positioned at the outer ring of centrifugal fixture block 2.Be fixed with four backstops 1 that 90 degree distribute on the rope sheave disc, the outer ring of stop block before backstop 1 is positioned at.The oil thread rope stretched length can reach 10 meters, and 4 kilograms of whole safety rope wheel loads, volume are φ 170 * 40.

Claims (1)

1, a kind of by housing 6, rope sheave 4, oil thread rope with return rope spring 5 and constitute centrifugal blocked safety rope sheave, it is characterized in that:

(1) have two centrifugal fixture blocks 2, the tail end of centrifugal fixture block is hinged on the rope sheave disc, and hinge-point departs from the center of circle, and the two ends of two centrifugal fixture blocks interconnect with spring;

(2) be fixed with four preceding stop blocks 3 that 90 degree distribute on the housing inboard, preceding stop block 3 is positioned at the outer ring of centrifugal fixture block 2;

(3) be fixed with four backstops 1 that 90 degree distribute on the rope sheave disc, the outer ring of stop block 3 before backstop 1 is positioned at.

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