CN2190647Y - Inner braking hoist - Google Patents

Abstract

The utility model relates to an inner braking hoist. Compared with the prior art, the hoist is characterized in that an electric device and a braking device are combined into a whole, an inner cone type braking motor is used as a power source and a brake, and outer braking is converted into inner braking. Not only the structure of the hoist is simplified, but also abrasion, slipping and other phenomena of the brake due to oil pollution and the invasion of mud, sand and other foreign matters are reduced. The utility model has the advantages of sensitive braking, accurate positioning and reduced energy consumption.

Description

Inner braking hoist

The utility model belongs to the trailer-type machine technical field.

Make elder generation at the utility model, the winch of prior art, its brake equipment generally adopts the electromagnetism block brake, device is on electrical motor and retarder coupler, drive brake shoe with electromagnet and embrace the brake wheel coupler, adopt the electromagnetism shoe brake to remain on the winch: 1, rapid wear in following weak point with braking.Greasy dirt, water, silt and foreign material are very easily invaded and are made brake block abrasion during work; Spring column pin on the brake wheel coupler very easily weares and teares, and is loosening even fly out; Cranking current pulse was bigger when electromagnet was closed, as started frequently, and magnet coil is very easily overheated or burn.2, maintenance difficulty.Former brake gear is at electrical motor and retarder, and between the coupler, brake block abrasion is changed needs the dismounting electrical motor, and coupler can carry out, and work capacity is big.3, energy consumption is big.Used on the electromagnetism shoe brake is alternating current, and electromagnet is closed or discharge the variation of its iron core air gap, and the magnet coil inductance value is also along with variation, and it not only produces rush current, and its leakage field and eddy current loss are also bigger.

Summary is got up, the winch of prior art is owing to adopt the mode of outside braking, and drg is the restriction on the structure technology on this of electromagnetism brake shoe formula, it is rapid wear not only, it is big to change consumable accessory difficulty work capacity, because of brake failure, skid, to goods is fallen, reach because magnet coil and electrical motor are connected in parallel on the same contactless switch, or because of starting frequent coil is overheated to be burnt, or because of the rush current in when starting makes contacts of contactor burn sticking can not unclamping because of excess current, the control loop accident that can not stop and take place that lost efficacy also happens occasionally in various places.

Therefore say that the technical performance of prior art winch still is unfavorable, particularly the brake structure aspect is badly in need of improving.In view of this, the utility model it as the center technical matters that is solved.The utility model is intended to propose a kind ofly can sensitivity brake reliably, wear and tear less, easy to maintenance, and energy-conservation again, and make it the technical scheme of structure rationalization.

Fig. 1 is a transmission scheme drawing of the present utility model.Mainly by brake motor 1, through coupler 2, retarder 3, coupler 4, drive reel 5 and rotate.The difference of the utility model and prior art maximum is to improve on the winch brake structure, changing electromagnetism brake shoe formula braking brakes for the internal cone type brake motor and sees Fig. 2, electrical motor and drg merge into a single whole, become outer braking and be inside brake, the working environment at braking position is greatly improved, can prevent to brake the position effectively and invade the wearing and tearing that produced because of silt particle, water or oil, phenomenon such as skid, and adjust that to change consumable accessory very convenient.

Fig. 2 is the structure principle chart of the utility model major part internal cone type brake motor, it is characterized in that: brake equipment also combines with electric motor structure, rotor all is taper, the energising back is along with the generation in magnetic field, promptly produce a axial magnetic pull to the little extreme direction of rotor (1), under the effect of magnetic pull, rotor (1) drives fan wheel (4) by axle and has overcome moving axially that its elastic force of spring (2) produces, make the upper conical trig loop of fan wheel (3) break away from bonnet, brake ineffective.During parking, magnetic field disappears, and under the effect of spring (2), rotor (1) recovers the home position, and taper trig loop (3) is stuck in bonnet, plays brake action.Adjustment nut (5) is used to adjust elastic force and braking effect.

The utility model compared with prior art, has compactness rational in infrastructure, braking is sensitive reliable, the braking working environment is greatly improved, it not only weares and teares few, and is easy to maintenance, cuts down the consumption of energy, and to the minimizing accident, indexs such as the serviceability rate of the complete machine stability of increase winch and raising winch and degree of utilization all have remarkable result.

Claims (2)

1, a kind of inside brake formula winch of being made up of brake motor, coupler, retarder, reel etc., it is characterized in that: its brake motor is the internal cone type brake motor.

2, internal cone type brake motor according to claim 1 is characterized in that: rotor (1), stator (2) all are tapers.

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