CN2903001Y

CN2903001Y - Biwinding drum type super high explosion proof electric block hoist

Info

Publication number: CN2903001Y
Application number: CN 200520143472
Authority: CN
Inventors: 高剑虹
Original assignee: JIANGSU XI'ANDA EXPLOSIVE-PROOF STOCK Co Ltd
Current assignee: JIANGSU XI'ANDA EXPLOSIVE-PROOF STOCK Co Ltd
Priority date: 2005-11-25
Filing date: 2005-11-25
Publication date: 2007-05-23
Anticipated expiration: 2015-11-25

Abstract

A double-drum type super high anti-explosion electric block whose lift height is more than 30 meters is mainly used in the circumstance of the high rise plants of petrochemical companies where the flammable and explosive gases exist. The device utilizes two parallel drums to increase the rope capacity, further enhancing the lift height of electric block, and employs the non-spinning or micro-spinning wire rope and the hook to increase the weight boards. A suit of controlling boxes is adopted to control the two lifting motors. The grooves in the two drums and the rope guide respectively adopt a levo structure and a dextral structure. The device utilizes two suits of motor-driven carriers and properly enlarges the distance between the motor-driven carriers.

Description

Two roll type superelevation explosion-proof electric blocks

One. technical field

The present utility model relates to a kind of pair of roll type superelevation explosion-proof electric block (hereinafter to be referred as the superelevation cucurbit), the superelevation cucurbit is that a kind of lifting altitude surpasses 30 meters Explosion proof hoist equipment, it has solved standard explosion-proof electric block lifting altitude can not surpass 30 meters defective, and main the use at the high-rise factory building of petroleum chemical enterprise exists in the environment of flammable explosive gas.

Two. background technology:

At present, the explosion-proof electric block of domestic production all is to develop on the basis of CD1, MD1 type electric block, because the tube rope diameter of the electric block when length of tween drive shaft is restricted, the lifting altitude of standard explosion-proof electric block is 6～30 meters, and the Rong Shengliang that increases reel has just become electric block to improve the key of lifting altitude.

The electric block of knowing in the industry all adopts the single drum structure, steel rope is winding of single layer on reel, in order to make electric block improve lifting altitude, producer's double-deck method of twining of steel rope was once arranged, the method is had relatively high expectations to the manufacturing of reel, increased rope blocking plate, rope guide changes rope processing device into, circuit fire stop changes travel switch into, and the method has feasibility to the common electric cucurbit, and is then unworkable at all to explosion-proof electric block, because of explosion-proof electric block has specific (special) requirements, should consider electrical explosion proof also to consider machinery explosion-proof, in case do not produce explosion accident, certainly will cause the serious economic loss even the personal casualty of enterprise owing to explosion-proof electric block is explosion-proof.

Also have producer to try to increase the method for single drum diameter, but the method has following shortcoming with the increase rope capacity:

1, because the drum diameter increase, the rising or falling speed of electric block improves, and the necessary corresponding increasing of the power of lifting motor must be developed new motor again when having the under power of lifting motor now, delivery cycle is prolonged greatly, and increased the development cost of new motor.

2, because drum diameter increases, and retarder, tween drive shaft, coupler, roll device etc. all must be made in redesign, these factors all have a strong impact on the Lead Time and the manufacturing cost of electric block.

3, be pressed for time, task is anxious, frock technology guarantees that the build guality of electric block under the inadequate situation is difficult to guarantee.

4, safeguard the aspect: since different with existing part, the replacement of part during the influence maintenance.

Three. summary of the invention:

For solving the manufacturing issue of superelevation cucurbit, the present utility model provides a kind of pair of roll type superelevation explosion-proof electric block, this superelevation cucurbit is dependable performance not only, and commonality is good, manufacture difficulty is low, the delivery time is short, need not increase new frock, easy to maintenance, most importantly it can reach the lifting altitude of 100m, has satisfied pressing for of petroleum chemical enterprise.

The technical characterictic that its technical matters that solves the utility model adopts is: adopt two reels arranged side by side to increase appearance rope amount and improve the lifting altitude of superelevation cucurbit; In order to solve the torsion problem that produces owing to steel rope is long, the superelevation cucurbit is adopted and does not reverse or little steel rope that reverses, and suspension hook increases Weight plate; The superelevation cucurbit is adopted two lifting motors of a cover control box control, thereby avoids the generation of work out of step conditions; Be to solve steel rope elevation angle problems of too, grooving and rope guide on two reels adopt a left-handed and dextrorotation structure respectively; For avoiding suspension hook superelevation cucurbit other end when the end position of the left and right sides to upwarp, the superelevation cucurbit is adopted two cover motor-driven carriers and suitably amplifies distances between motor-driven carrier; In order to make superelevation cucurbit manufacturing and easy to maintenance, except that reel, reel shell, rope guide, suspension hook, bearing support, remaining parts all adopts standard explosion-proof electric block part.

For satisfying user's specific (special) requirements, functions such as all right adapted load limiter of the explosion-proof cucurbit of superelevation, remote controller control.

Four. description of drawings:

Fig. 1 is the front view of superelevation cucurbit, and Fig. 2 is the left view of superelevation cucurbit.

Five. the specific embodiment:

After the energising of superelevation cucurbit, press the lifting button of control button box 10, electric control box 6 energisings, lifting AC contactor adhesive in the case, lifting motor 1 starting, driving retarder 4 input shafts rotates, and slow down by tertiary gear, drive the reel rotation of roll device 2 again by the output shaft of retarder, thereby lay winding wire ropes makes suspension hook 9 lifting hoisting heavies, when lifting button is decontroled, electric control box 6 outages, the cone rotor of lifting motor 1 is subjected to the influence of contained spring pressure and axial motion, makes inner brake wheel braking, and the superelevation cucurbit stops lifting; Press the operation button of control button box 10, electric control box 6 energisings, AC contactor adhesive in the case, 8 startings of operation motor drive motor-driven carrier 7 side-to-side movements by actuating device, when the operation button is decontroled, electric control box 6 outages, the cone rotor of operation motor 8 is subjected to the influence of contained spring pressure and axial motion, makes inner brake wheel braking, and the superelevation cucurbit is out of service.

Claims

A kind of pair of roll type superelevation explosion-proof electric block asked for protection its pair roll type structure; Its technical characterictic is: adopt two reels arranged side by side to increase and hold the lifting altitude that the rope amount improves the superelevation explosion-proof electric block; In order to solve the torsion problem that produces owing to steel rope is long, the superelevation explosion-proof electric block adopts and does not reverse or little steel rope that reverses, and suspension hook increases Weight plate; The superelevation explosion-proof electric block adopts two lifting motors of a cover control box control, thereby avoids the generation of work out of step conditions; Be to solve steel rope elevation angle problems of too, grooving and rope guide on two reels adopt a left-handed and dextrorotation structure respectively; For avoiding suspension hook superelevation cucurbit other end when the end position of the left and right sides to upwarp, the superelevation explosion-proof electric block adopts two cover motor-driven carriers and suitably amplifies distances between motor-driven carrier; In order to make superelevation explosion-proof electric block manufacturing and easy to maintenance, except that reel, reel shell, rope guide, suspension hook, bearing support, remaining parts all adopts standard explosion-proof electric block part.