CN2207373Y

CN2207373Y - Safety high speed capstan engine

Info

Publication number: CN2207373Y
Application number: CN 94244226
Authority: CN
Inventors: 潘家奇
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-04
Filing date: 1994-11-04
Publication date: 1995-09-13
Anticipated expiration: 2004-11-04

Abstract

The utility model relates to a high-efficiency safe high-speed capstan engine which is composed of a speed reducing box, a hydraulic brake, a motor, a floating shaft coupling joint, a steel cable drum, a centrifugal friction starter, a centrifugal friction braking controller, etc. The power of the motor can be transmitted to a friction driving wheel through the centrifugal friction starter, and the power which is transmitted to the input shaft of the speed reducing box can be transmitted to the steel cable drum through the output shaft of the speed reducing box by the floating shaft coupling joint, so that a load can be lifted through pulling a suspension cage by a steel cable. The utility model can increase the work efficiency for transporting materials, can accelerate returning speed, can protect a capstan engine, a steel tower frame and other equipment from being damaged when overload occurs, and can enlarge the safety for using the equipment. The utility model has the advantages of low cost, practicability and reliability.

Description

Safety high speed capstan engine

The utility model relates to a kind of winch, particularly a kind of highly effective and safe high speed winch.

Existing high speed winch for building (60～80 meters/minute of speed) is used for skyscraper more, owing to story height, load weigh, speed is high, event must the high-performance electrical motor of outfit.And has starter gear under load, to increase staring torque and to reduce starting current.Just because horsepower is big, speed is fast, if take place that cage is rushed to summit or the cage lift heavy in to catch on situation such as steelframe be breakneck, this phenomenon happens occasionally in the building ground, make fatal crass's accident, though the high speed winch of use at present is equipped with the erosion control ejection device of control power supply, then can't protect the overburden phenomenon of accident generations such as cage blocks midway; If make overload protection with thermal relay, machine is ruined people's wound when relay produces the outage action, pretends with little.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of efficient height, high degree of safety, highly effective and safe high speed winch that cost is low is provided.

The purpose of this utility model can reach by following measure: the utility model comprises drop-gear box, hydraulic brake, electrical motor, shaft coupling, cable drum float, it is characterized in that: also have the centrifugal friction actuator of forming by friction drive wheel, mounting flange, the friction palm, eccentric weight, torque spring, fixed bearing dish, tension spring, the centrifugal friction brake controller of forming by speed governing screw, spring, flyball, fixed friction dish, movable friction disc, ratchet, friction lining, sour jujube, elastic-friction circle, positive stop block.Mounting flange and fixed bearing dish all are enclosed within on the motor reel, and two the frictions palms, two eccentric weight, two springs all are contained on mounting flange and the fixed bearing dish, the fixed friction dish is fixed on the drop-gear box input shaft, movable friction disc and ratchet sleeve are on the fixed friction dish, three flyballs are contained on the movable friction disc, and catch on the fixed friction dish, between fixed friction dish, movable friction disc and the ratchet friction lining are housed, spring one end and movable friction disc join, and the other end contacts with the speed governing screw.

The purpose of this utility model can also reach by following measure: the friction palm is installed with eccentric weight, and the little axle of eccentric weight is set in the bearing hole of mounting flange and fixed bearing dish, at eccentric weight cover upper spring, between two friction palms two springs is housed.The elastic-friction circle can contact with movable friction disc, and spring is loaded between elastic-friction circle and sour jujube.

Fig. 1 is a structural principle scheme drawing of the present utility model;

Fig. 2 (a) schemes to analysing and observe (when motor is static) for the utility model D-D;

Fig. 2 (b) schemes to analysing and observe (when motor rotates) for the utility model D-D;

Fig. 3 is side-looking structure of the present utility model (part) scheme drawing.

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

With reference to Fig. 1～Fig. 3, the utility model comprises drop-gear box 8, hydraulic brake 9, electrical motor 16, shaft coupling 17, cable drum 18 float; And the centrifugal friction actuator of forming by friction drive wheel 10, mounting flange 11, the friction palm 12, eccentric weight 13, torque spring 14, fixed bearing dish 15, tension spring 23 etc.; The centrifugal friction brake controller of forming by speed governing screw 1, spring 2 and 20, flyball 3, fixed friction dish 4, movable friction disc 5, ratchet 6, friction lining 7, sour jujube 21, elastic-friction circle 22, positive stop block 24 etc.

Mounting flange 11 and fixed bearing dish 15 all are enclosed within on the axle of electrical motor 16, can rotate with electrical motor; And 12, two eccentric weight of two friction palms 13, two springs 14 all are contained on mounting flange 11 and the fixed bearing dish 15, also can rotate simultaneously with electrical motor.Fig. 2 (a) is electrical motor 16 situation when static, and two friction palms 12 are respectively worn an eccentric weight 13, and eccentric weight 13 little axles are set in the bearing hole of mounting flange 11 and fixed bearing dish 15, and rotatable; And eccentric weight 13 cover upper springs 14, because of the twisting force of spring 14 rotates counterclockwise eccentric weight 13, because accentric relation, the friction palm 12 is shunk to the center, add the contraction of spring 23, making the friction palm 12 leave the inwall of friction drive wheel 10, at this moment the disconnection of getting in touch of electrical motor 16 and drop-gear box 8.When electrical motor with Y type wiring decompression starting, when electrical motor turns to certain speed, eccentric weight 13 clockwise rotates because of centrifugal action overcomes torque spring 14 torsion, because eccentric action, the friction palm 12 is to external diffusion, and 12 deadweights of the friction palm also produce big centnifugal force and push down friction drive wheel 10 inwall (see figure 2)s, follow electrical motor 16 rotations and will drive friction drive wheel 10, the surface of the friction palm 12 studs with the friction skin, so friction force is very big, but because of friction drive wheel 10 is in the braking mode that is subjected to drg 9, so can not rotate; When the speed of arriving was higher, electrical motor was connect to start by Y and changes the △ operation over to, and drg 9 is opened, the power of electrical motor 16 imports drop-gear box 8 into through the friction palm 12, friction drive wheel 10, through the output shackle line reel that slows down, drive load and rise, finish the start-up course of winch.Suitably adjust the weight of the friction palm 12; can make electrical motor when surpassing rated load, nominal load, the friction palm 12 produces and skids, and keeps the constant of electrical motor to exert oneself; this performance can be as the overload safety guard-safeguard, and the accident of (rushing to summit or the lift heavy object catches on steelframe etc. as cage) so that unexpected overload is protected.

Fixed friction dish 4 is fixed on drop-gear box 8 input shafts, movable friction disc 5 and ratchet 6 are enclosed within on the fixed friction dish 4, three flyballs 3 are contained on the movable friction disc 5, can scatter in the direction of arrows, because flyball 3 catches on fixed friction dish 4, when so the centrifugal action that flyball 3 produces because of the drop-gear box rotation scatters, movable friction disc 5 can be pressed to ratchet 6, and press on the fixed friction dish 4, ratchet 6 is clamped, between fixed friction dish 4, movable friction disc 5 and ratchet 6, be provided with friction lining 7, to increase friction; The effect of spring 2 is that movable friction disc 5 is pulled away from ratchet 6 and fixed friction dish 4, and the effect of screw 1 is to adjust the strength that is pulled away from.See Fig. 3, when electrical motor 16 drives the drop-gear box input shaft when ascent direction rotates, flyball 3 makes fixed friction dish 4, movable friction disc 5 clamp ratchet 6 rotations because centrifugal action scatters, elastic-friction circle 22 clockwise rotates thereby drive sour jujube 21 owing to fixed friction dish 4, movable friction disc 5 edges are pushed down in the effect of spring 20; Because positive stop block 24 is spacing, after sour jujube 21 leaves ratchet 6, can not rotate again, at this moment winch rises, and sour jujube 21 can percussion ratchet 6.After winch stops, when descending drg 9 energisings are opened, winch affects the operation of reversing because of the deadweight of cage, fixed friction dish 4, movable friction disc 5, and then counter-rotating of ratchet 6, because elastic-friction circle 22 is followed fixed friction dish 4, movable friction disc 5 counter-rotatings, make sour jujube 21 be flapped toward ratchet 6, the ratchet that withstands ratchet 6 can not reverse ratchet 6, when movable friction disc 5 rotates flyball 3 is scattered because of centnifugal force, this makes movable friction disc 5, fixed friction dish 4 clamps the ratchet 6 that can not rotate, the fast more then gripping power of speed is big more, when flyball 3 generation centnifugal forces overcome the pressure of spring 2, fixed friction dish 4, movable friction disc 5 will actually clamp ratchet 6, thereby plays brake action, makes parallel being stabilized on certain descending speed of speed energy.Speed governing screw 1 increases the pressure of spring 2, descending speed is accelerated, otherwise then slowed down; The weight that increases flyball 3 also can make reduction of speed slow down, otherwise then accelerates.Suitably select both sides relation can reach descending speed between 1.5～2 times of command speves.Also fixed friction dish 4, movable friction disc 5, ratchet 6 to be organized the ventilate passage of cooling and suitable unit area frictional heating amount in addition, temperature is controlled in the suitable scope.

The utility model has following advantage compared to existing technology:

(1) can increase the work efficiency of haul, accelerate opening speed, be actually in the situation that does not increase power, make hoist engine up and down back and forth average speed increase, can increase by 30%～50% in theory.

(2) it is not impaired to play the equipment such as protection hoist engine and steel tower during overburden, the security that increases use equipment.

(3) simple in structure, cost is lower, and is practical reliable, maintenance easily; And the electrical motor disengaging is not rotated when descending, and has protected the working life of electrical motor.

Claims

1, a kind of highly effective and safe high speed winch, comprise drop-gear box 8, hydraulic brake 9, electrical motor 16, shaft coupling 17, cable drum 18 float, it is characterized in that: also have the centrifugal friction actuator of forming by friction drive wheel 10, mounting flange 11, the friction palm 12, eccentric weight 13, torque spring 14, fixed bearing dish 15, tension spring 23, the centrifugal friction brake controller of forming by speed governing screw 1, spring 2 and 20, flyball 3, fixed friction dish 4, movable friction disc 5, ratchet 6, friction lining 7, sour jujube 21, elastic-friction circle 22, positive stop block 24; Mounting flange 11 and fixed bearing dish 15 all are enclosed within on the motor reel, and 12, two eccentric weight of two friction palms 13, two springs 14 all are contained on mounting flange 11 and the fixed bearing dish 15, fixed friction dish 4 is fixed on drop-gear box 8 input shafts, movable friction disc 5 and ratchet 6 are enclosed within on the fixed friction dish 4, three flyballs 3 are contained on the movable friction disc 5, and catch on fixed friction dish 4, between fixed friction dish 4, movable friction disc 5 and the ratchet 6 friction lining 7 is housed, spring 2 one ends and movable friction disc 5 join, and the other end contacts with speed governing screw 1.

2, winch according to claim 1, it is characterized in that: be installed with eccentric weight 13 on the friction palm 12, eccentric weight 13 little axles are set in the bearing hole of mounting flange 11 and fixed bearing dish 15, at eccentric weight 13 cover upper springs 14, between two friction palms 12 two springs 23 are housed.

3, winch according to claim 1 is characterized in that: elastic-friction circle 22 can contact with movable friction disc 5, and spring 2 is loaded between elastic-friction circle 22 and sour jujube 21.