CN2401528Y

CN2401528Y - Elevator drawing machine

Info

Publication number: CN2401528Y
Application number: CN 00219018
Authority: CN
Inventors: 陈惠良
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-01
Filing date: 2000-01-01
Publication date: 2000-10-18
Anticipated expiration: 2010-01-01

Abstract

The utility model relates to an elevator drawing machine, particularly an elevator drawing machine which is especially used for conveying sundries. The elevator drawing machine is composed of a pedestal, a motor, a worm gear case, a worm screw, a worm gear shaft, hitching legs, a worm gear, a drawing gear and a braking mechanism. An eccentric sleeve is arranged at one end of the worm gear shaft, a connecting disk is arranged at the middle of the worm gear shaft, one end of the connecting disk is fixed to the worm gear, and the other end of the connecting disk is fixed to the drawing gear. Bearings are respectively arranged between the connecting disk and the worm gear, and the connecting disk and the drawing gear; a pair of hitching legs which is provided with the worm gear shaft, and adjusting shims are arranged at the bottom of the hitching legs. The utility model has the advantages that a gap-passing phenomenon can not be generated between the worm gear and the drawing gear, the stable layer-stopping effect of an elevator car can be assured, and the worm gear and the worm screw are well matched with each other.

Description

Elevator traction machine

The utility model discloses a kind of elevator traction machine, particularly a kind of elevator traction machine that transports foreign material that is exclusively used in.

Present drag for service elevator, because its worm gear connects for axle with the form that connects of traction sheave, this connection is difficult to make worm gear and traction sheave to reach desirable cooperate degree between the two, because axle is connected in the engagement process, tend to cause the crack phenomenon because of factors such as flat keys, rock thereby traction sheave is produced at glancing impact, influence layer stability of stopping of lift car; In addition, because the towing machine that uses on the dumb waiter is the suspension type towing machine, and the suspension type towing machine must guarantee the permanent center distance of worm gear, worm screw, but in fact cooperate the restriction that is subjected to tolerance between worm gear and the worm screw, so both width between centerss also are the degree that is difficult to reach the best, thereby cause the gap between the two irregular, influence the action effect of the two.

Task of the present utility model is will provide a kind of worm gear and traction sheave can not produce the crack phenomenon between the two, can guarantee that lift car stops layer stability and guarantees the uniform drag for service elevator in gap between worm gear and the worm screw.

Task of the present utility model is finished like this, a kind of elevator traction machine, form by base 20, motor 13, worm case 19, worm screw, worm-wheel shaft 9, hanging feet 1, worm gear 8, traction sheave 2, stop mechanism, one end of described worm-wheel shaft 9 is provided with eccentric bushing 12, worm-wheel shaft 9 middle parts are provided with tie-plate 24, tie-plate 24 1 ends are solid mutually with worm gear 8, the other end is solid mutually with traction sheave 2, in that bearing 7,25 is set respectively between tie-plate 24 and the worm gear 8 and between tie-plate 24 and the traction sheave 2, be provided with bearing cap shim 21 in a pair of hanging feet 1 bottom that worm-wheel shaft 9 is set.

The utility model has been owing to adopted tie-plate 24 that worm gear 8 is connected with traction sheave 2, eliminated that worm gear 8 and traction sheave 2 in the past exist because of axle connects the crack phenomenon, thereby in use get so that lift car stops layer stablizing; Owing to adopted eccentric bushing 12 and bearing cap shim 21, thereby guaranteed even the join gap of worm gear 8 with worm screw.

Below in conjunction with accompanying drawing the utility model is further described below.

Accompanying drawing is the utility model constructional drawing.

Eccentric bushing 12 of the present utility model is nested with on the spindle nose 10 of an end of worm-wheel shaft 9, and be positioned on the eccentric block set 18 of worm case 19 tops one side, worm gear 8 is positioned at worm case 19, and match with the worm screw in the worm case 19, worm gear 8 is gone in one side pressure of bearing 7, opposite side is pressed in the bearing seat 23 of worm gear conjunction plane 6 of tie-plate 24, tie-plate 24 middle parts place on the tie-plate seat 22 of worm case 19 top opposite sides, one side pressure of bearing 25 is gone in the bearing seat 23 of tie-plate 24 traction sheave conjunction planes 5, opposite side is pressed in the bearing seat 3 on the traction sheave 2, worm gear 8, bearing 7, tie-plate 24, bearing 25, traction sheave 2 is positioned at the middle part of worm-wheel shaft 9 in regular turn, two ends of worm-wheel shaft 9 place on a pair of hanging feet 1, hanging feet 1 is solid mutually with base 20, worm gear 8, tie-plate 24, traction sheave 2 threes are solid mutually by some bolts.After treating that worm gear 8 places in the worm case 19, join with the worm screw in the worm case 19 is even mutually, then adjusted, cover case lid 4 then, and add shaft-cup 14 at the afterbody of spindle nose 10 and fix with worm case 19 by eccentric bushing 12 and bearing cap shim 21 for guaranteeing worm gear 8.

Stop mechanism of the present utility model is made up of Brake Block 11, electromagnetic valve, band-type brake 16, brake shoe 15, brake wheel 17, Brake Block 11 is connected with worm case 19, electromagnetic valve is located on the Brake Block 11, the top of a pair of band-type brake 16 is connected with Brake Block 11, the bottom sets firmly brake shoe 15 respectively, the shaft coupling wheel that brake wheel 17 is fixedly arranged in worm shaft end and motor 13 links, and a pair of brake shoe 15 is corresponding with brake wheel 17.

The utility model is to come work like this, energized, make stop mechanism be in "on" position by master cock, motor 13 rotates simultaneously, motor 13 drives the worm screw rotation, worm screw drives worm gear 8 runnings, because worm gear 8, tie-plate 24, traction sheave 2 threes be solidified as a whole by some bolts, thereby, along with the rotation of worm gear 8, tie-plate 24, the rotation of traction sheave 2 relative directions, it is up to drive lift car by the rope on the traction sheave 2, when cage operation during to predetermined a certain destination, make motor 13 stalls by the actuating master cock, brake by stop mechanism simultaneously.Braking principle is: when motor 13 outages, the electromagnetic valve dead electricity of stop mechanism, a pair of band-type brake 16 is by the effect locking brake wheel 17 of spring 26 elastic force, by the friction between brake shoe on the band-type brake 16 15 and the brake wheel 17, make the rapid stall of motor shaft, worm gear 8, traction sheave 2 are fixed on this position, thereby make lift car stably be stopped layer.Descending when more up only motor 13 make reverse direction operation, its process and in like manner up.

Claims

1, a kind of elevator traction machine, by base (20), motor (13), worm case (19), worm screw, worm-wheel shaft (9), hanging feet (1), worm gear (8), traction sheave (2), stop mechanism is formed, an end that it is characterized in that described worm-wheel shaft (9) is provided with eccentric bushing (12), worm-wheel shaft (9) middle part is provided with tie-plate (24), tie-plate (24) one ends are solid mutually with worm gear (8), the other end is solid mutually with traction sheave (2), between tie-plate (24) and the worm gear (8) and between tie-plate (24) and the traction sheave (2) bearing (7) is being set respectively, (25), be provided with bearing cap shim (21) in a pair of hanging feet (1) bottom that worm-wheel shaft (9) is set.