CN202245897U

CN202245897U - Drum lifting height limiting device

Info

Publication number: CN202245897U
Application number: CN2011203228685U
Authority: CN
Inventors: 陈林
Original assignee: WUXI HUILI MECHANICAL MANUFACTURING Co Ltd
Current assignee: WUXI HUILI MECHANICAL MANUFACTURING Co Ltd
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2012-05-30
Anticipated expiration: 2021-08-31

Abstract

The utility model relates to a drum lifting height limiting device, which comprises a drum, a fixed pulley, a hook pulley, a steel wire and a support. A limit switch is mounted on the support, the drum, the fixed pulley and the hook pulley are sequentially arranged in parallel in the perpendicular direction, and the steel wire is wound on the drum, the fixed pulley and the hook pulley sequentially. A counterweight device is arranged on the steel wire between the fixed pulley and the hook pulley and connected with the limit switch. By the aid of the counterweight device, the drum is limited to lift further under the action of the limit switch when reaching the limited lifting height, and accordingly, a lifting power source is switched off automatically, and the problems of over winding of the drum and over-hoisting of a crane are eliminated effectively conveniently. The drum lifting height limiting device is simple in structure, fine in limiting effect and high in safety coefficient.

Description

Reel lifting altitude inhibiting device

Technical field

The utility model relates to the elevator machinery field, relates in particular to the winding up roller of hanger rope.

Background technology

For preventing that hoist lifting hook from rushing to summit, adopt reel lifting altitude killer in the prior art.According to the diameter of hook limiting altitude and reel, calculate the number of turns that steel wire can twine on reel, starting limits can twine the end position of maximum steel wires in reel thereby will report to the police.When the weight that is raised during near limiting altitude, this warning device then sends the sound and light alarm signal automatically, when reaching capacity height, cuts off the power supply that hoists immediately automatically, and reel stops to promote.This version must be passed through accurate Calculation before use, if be applied to different occasions, then need recomputate the number of turns that steel wire can twine on reel, confirms that the startup of warning device is limited, troublesome poeration.

The utility model content

The applicant provides a kind of easy to operate reel lifting altitude inhibiting device to above-mentioned shortcoming in the prior art, can effectively not improve the safety of lifting operation near risk altitude when reel promotes weight.

The technical scheme that the utility model adopted is following:

A kind of reel lifting altitude inhibiting device comprises reel, fixed pulley, lifting hook pulley, steel rope and support, on the said support limit switch is installed; Said reel, fixed pulley and lifting hook pulley are distinguished parallel device successively in vertical direction, and said steel rope is wound on reel, fixed pulley and the lifting hook pulley successively; Device has weight-driven on the steel rope between said fixed pulley and the lifting hook pulley, and said weight-driven is connected with said limit switch.Its further technical scheme is:

Said weight-driven comprises movement weight mass; Said movement weight mass top is provided with suspension ring; Said suspension ring are connected with said limit switch; The movement weight mass both sides are connected with the U-shaped shackle respectively, and the open end of said U-shaped shackle connects the said U-shaped shackle of the steel wire penetrating between said fixed pulley and the lifting hook pulley through bolt locking.

The beneficial effect of the utility model is following:

Because the use of weight-driven, when reaching when hoisting spacing height, the effect of limit switch has limited the further lifting of reel, thereby has closed the power supply that hoists voluntarily, has effectively stopped the generation of overwind trouble and the phenomenon that hoisting crane is rushed to summit easily.The utility model is simple in structure, good limit effect, and safety factor is high.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the connection scheme drawing of the utility model assembly pulley.

Fig. 3 is the structural representation of the utility model weight-driven.

Fig. 4 is the birds-eye view of Fig. 3.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described.

As shown in Figure 1; The utility model is applied to the monkey suspension hook; The inhibiting device of its reel lifting altitude; Comprise reel 1, fixed pulley 2, lifting hook pulley 6, steel rope 7 and support 3, reel 1, fixed pulley 2 and lifting hook pulley 6 be parallel successively placement respectively in vertical direction, and steel rope 7 is wound in reel 1, fixed pulley 2 and lifting hook pulley 6 successively; Reel 1 is positioned at the top of vehicle frame, is provided with limit switch 4 and weight-driven 5 between fixed pulley 2 and the lifting hook pulley 6, and limit switch 4 is installed on the bottom of support 3; Like Fig. 3 and shown in Figure 4, weight-driven 5 comprises movement weight mass 8, and movement weight mass 8 tops are provided with suspension ring 11; Suspension ring 11 are connected with limit switch 4 through rope; Movement weight mass 8 right ends are connected with U-shaped shackle 9 respectively, and the open end of U-shaped shackle 9 connects locking through bolt 10, and movement weight mass 8 right ends are passed U-shaped shackle 9 through steel rope 7 respectively; Effectively prevented the sideslip of weight-driven 5, fixedly movement weight mass 8; Because U-shaped shackle 9 open ends can pass through bolt 10 lockings and dismounting, the squareness of convenient adjustment movement weight mass 5; Limit switch 4 is the commercial goods.

As shown in Figure 2; The coupled condition of lifting hook pulley group; During connection, steel rope 7 is walked around reel 1, and order is wound in lifting hook pulley 6-1, fixed pulley 2-1, lifting hook pulley 6-2, fixed pulley 2-2, lifting hook pulley 6-3 successively; Again from lifting hook pulley 6-3 reel 1 around the home; Wherein penetrate the steel rope 7 between lifting hook pulley 6-2 and the fixed pulley 2-1 in the U-shaped shackle 9 of weight-driven 5 one ends, weight-driven 5 other end U-shaped shackles 9 penetrate the steel rope 7 between lifting hook pulley 6-2 and the fixed pulley 2-2, then accomplish the connection of one group of assembly pulley.

In the actual use,, lifting altitude (being the distance between movement weight mass 8 bottoms and lifting hook pulley 6 tops) is set in advance, starts the power supply that hoists according to the occasion of practical application; Reel 1 clickwise, since the direction of the winding of steel rope 7, each pulley clickwise; Thereby lifting hook pulley 6 is upwards promoted, and suspension hook is connected in lifting hook pulley 6 bottoms, and rises along with the lifting of lifting hook pulley 6; Lifting hook pulley 6 is promoted to lifting altitude when reaching in advance the height that is provided with, and lifting hook pulley 6-2 collides the bottom of movement weight mass 8, limit switch 4 work this moment; Cut off circuit, i.e. the effect of limit switch has limited when reel reaches capacity height working on again; Close the power supply that hoists, actv. has prevented that hoisting crane from rushing to summit, and reaches the effect of position limitation protection.

More than describing is the explanation to the utility model, is not the qualification to utility model, and the utility model institute restricted portion within the protection domain of the utility model, can be done any type of modification referring to claim.

Claims

1. a reel lifting altitude inhibiting device is characterized in that: comprise reel, fixed pulley, lifting hook pulley, steel rope and support, on the said support limit switch is installed; Said reel, fixed pulley and lifting hook pulley are distinguished parallel device successively in vertical direction, and said steel rope is wound on reel, fixed pulley and the lifting hook pulley successively; Device has weight-driven on the steel rope between said fixed pulley and the lifting hook pulley, and said weight-driven is connected with said limit switch.

2. reel lifting altitude inhibiting device as claimed in claim 1; It is characterized in that: said weight-driven comprises movement weight mass; Said movement weight mass top is provided with suspension ring, and said suspension ring are connected with said limit switch, and the movement weight mass both sides are connected with the U-shaped shackle respectively; The open end of said U-shaped shackle connects the said U-shaped shackle of the steel wire penetrating between said fixed pulley and the lifting hook pulley through bolt locking.