CN205973555U - Mechanical trailing type load -lifting height stop device of swing arm tower machine - Google Patents

Abstract

The utility model discloses an it becomes the spacing mechanical trailing type load -lifting height stop device of swing arm tower machine of width of cloth formula tower machine load -lifting height to be applicable to the swing arm, rising to rise the pulley both sides and set up two nylon slides in the tower horn end festival, the radian of nylon slide is with to play to rise the pulley unanimous, two thin wire rope that hang the weight inject in two nylon slides, a thin wire rope's upper end connection control circuit breaker, another root thin wire rope fixed on the arm end festival, the wire rope that rises to rise that the pile warp plays to rise the pulley passes the lifting hook below the weight connection of hanging. The utility model discloses a weight becomes the width of cloth at tower machine and plays to rise the in -process, all the time along with rising to rise wire rope horizontal migration, and the wire rope that can not wear and tear, it is simple to have the principle, practicality characteristics such as strong.

Description

Movable arm tower crane mechanical servo formula device for limiting lifting attitude of winding

First, technical field

This utility model is related to the safety device of derrick crane, particularly luffing jib formula derrick crane raising The second level mechanical type device for limiting lifting attitude of winding of mechanism.

2nd, background technology

According to GB/T3811-2008《Hoist design specification》Advise in standard 9.7.2.1 hoisting limiter clause Fixed：" lifting mechanism all should install hoisting limiter.When load-engaging device rises to the upper extreme position of design code, should Power source of hoisting can be automatically cut off.Under special circumstances, also can install prevents the second level lifting altitude that surpassed distance is rushed to summit spacing Device." for luffing jib formula tower crane, hoist rope has a range of horizontal displacement in amplitude changing process, common machine Or the weight profile of tool formula hoisting limiter is excessive, affect overall appearance；Profile too small it is impossible to raising steel wire Rope remains and is synchronized with the movement.Therefore, the hoisting limiter that can move with hoist rope is to luffing jib formula tower For the safe handling of machine it is critical that.

3rd, content of the invention

The purpose of this utility model is to provide a kind of movable arm tower crane mechanical servo formula device for limiting lifting attitude of winding, so that height is limited The weight of position device can move horizontally with hoist rope all the time, it is to avoid to steel rope abrasion, can reliably realize to tower lifting The safeguard protection of machine lifting altitude.

The technical solution adopted in the utility model is：Arrange two nylon in the lifting pulley both sides of tower crane arm end segment to slide Road, the radian of nylon slideway is consistent with lifting pulley, and two seizing wires hanging weight are limited in two nylon slideways, and one The upper end of root seizing wire connects and controls chopper, and another seizing wire is fixed in arm end segment, the rising of pile warp lifting pulley The weight rising steel wire penetrating suspension connects following suspension hook.

During work, when suspension hook rise to design code apart from when, weight can be touched in suspension hook top, connects the finer wire of weight Rope can trigger control breaker actuation, cuts off raising power.Weight of the present utility model during tower crane luffing raising, all the time Move horizontally with hoist rope, will not wear and tear steel wire rope, there is principle simple, the features such as practical.

This utility model also has following distinguishing feature：

A, structure design are simple, applied widely, simple installation no operational risk.

B, fully meet the use requirement to mechanical type hoisting limiter for the luffing jib formula tower crane, do not wear and tear steel wire Rope, using safely for tower crane provides reliable guarantee.

C, manufacturing process are simple, and good looking appearance is light and handy, easy to assembly, human oriented design.

4th, brief description

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

Fig. 2 is utility model works view.

5th, specific embodiment

This utility model is by installing the devices such as control chopper, nylon slideway at tower crane arm end segment, using pulley The principle that group is synchronized with the movement, makes the weight of stop move horizontally with hoist rope all the time, is effectively protected steel wire rope, And there is susceptiveness and reliability.

First two nylon slideways 1 are respectively fixed on slideway support 2, with bearing pin 3, two slideway supports 2 are connected to one Rise, slideway support 2 is arranged at arm end segment 6.It is installed to controlling chopper 7 at arm end 6.By thin for two on weight 5 steel Cord 4 one is connected on control chopper 7, and another is fixed in arm end segment 6.Two seizing wires 4 are limited to both sides On nylon slideway 1.

During vertical tower, hoist rope 8 is bypassed lifting pulley 10 through weight 5, when tower crane luffing, connect weight 5 Two seizing wires 4 are hung with hoist rope 8 equal angular in nylon slideway 1, make weight 5 all the time with hoist rope 8 Keep in pace with movement.

When suspension hook 9 rise to design code apart from when, suspension hook 9 touch weight 5, then triggering control chopper 7 cut off Rise power, realize the safeguard protection to tower crane lifting height.

Claims (2)

1. a kind of movable arm tower crane mechanical servo formula device for limiting lifting attitude of winding, is characterized in that：In tower crane arm end segment（6）Raising slide Wheel（10）Both sides arrange two nylon slideways（1）, nylon slideway（1）Radian and lifting pulley（10）Unanimously, hang weight（5） Two seizing wires（4）It is limited to two nylon slideways（1）Interior, the upper end of a seizing wire is connected to control chopper （7）On, another seizing wire is fixed on arm end segment（6）On, pile warp lifting pulley（10）Hoist rope（8）Pass through and hang Weight（5）Connect following suspension hook（9）.

2. movable arm tower crane mechanical servo formula device for limiting lifting attitude of winding according to claim 1, is characterized in that：Two nylon are slided Road（1）It is respectively fixed to slideway support（2）On, use bearing pin（3）By two slideway supports（2）Connect together, by slideway support （2）It is arranged on arm end segment（6）Place.