CN201614732U - Safety self-locking lifting device - Google Patents

Abstract

The utility model provides a safety self-locking lifting device which comprises a left end cover, a right end cover, a shell formed by the connection of the left end cover and the right end cover through threads, and a transmission mechanism in the shell, and is characterized in that a worm extending end of the transmission mechanism is connected with one end of a driving handle; a worm is meshed with the working toothed surface of a worm gear; on the contact end surface of the worm gear and a gear, the worm gear and the gear are connected into a whole by adopting a mode of radial key slot matching; the gear is meshed with a pinion of a first dual gear; a bull gear of the first dual gear is meshed with the pinion of a second dual gear, the bull gear of the second dual gear is meshed with the inner gear ring of a pulley; and two ends of all gear shafts are respectively supported on the left end cover and the right end cover by bearings. Due to the utilization of the principle of worm gear and worm one-way transmission, the safety self-locking lifting device effectively solves the safety problem of the lifting device for working at height, and has the characteristics of simple structure, reasonable design, small volume, good strength, maintenance-free property and the like.

Description

The safe self-locking lifting appliance

Technical field the utility model relates to a kind of lifting means, is specifically related to a kind of lifting appliance that utilizes the unidirectional transmission principle of worm and gear to realize safe self-locking.

Background technology is present, and relevant work high above the ground such as building operations, building cleaning, exterior wall brushing, elevator installation all be unable to do without the high-altitude lifting appliance.In the prior art, the high-altitude lifting appliance mainly contains driven hanging basket and manual hanging basket, its self-locking mode has and adopts the ratchet self-locking, also reliable friction self-locking, and its safety is not high.

It is a kind of simple in structure, reasonable in design that the summary of the invention the purpose of this utility model is to provide, and can guarantee the lifting appliance of safe self-locking.

For achieving the above object, the technical scheme taked of the utility model is:

A kind of safe self-locking lifting appliance, comprise left end cap, right end cap, housing that connects and composes by left and right sides bolt of cover and the transmission mechanism in the housing, it is characterized in that: described transmission mechanism, its worm screw external part is connected with driving handle one end, the engagement of worm and wheel working flank, worm gear adopts the mode of radially keyway cooperation that worm gear and gear are connected as a single entity with contacting of gear on the end face, the pinion of the gear and first duplicate gear, the pinion of the gear wheel of first duplicate gear and second duplicate gear, the engagement of the gear wheel of second duplicate gear and the ring gear of pulley, described each gear shaft two ends respectively by bearings in left end cap, on the right end cap.

Described gear shaft is made of the mode that bolt shaft adds axle sleeve.

The above-mentioned safe self-locking lifting appliance that the utility model provides owing to utilized the principle of the unidirectional transmission of worm and gear, efficiently solves the safety issue of work high above the ground with lifting appliance.That this device also has is simple in structure, reasonable in design, volume is little, intensity good, characteristics such as non-maintaining.

Description of drawings Fig. 1 is a profile schematic diagram of the present utility model

Fig. 2 is the C-C sectional view of Fig. 1

Among the figure: the 1-left end cap; The 2-right end cap; The 3-worm screw; The 4-worm gear; The 5-gear; The 6-gear shaft; 7-first duplicate gear; 8-first double crosslinking gear shaft; 9-second duplicate gear; The 10-bolt shaft; The 11-neck bush; The 12-pulley; The 13-mount pad.

The specific embodiment as shown in Figure 1 and Figure 2, among the embodiment of the safe self-locking lifting appliance that the utility model provides, this lifting appliance comprises left end cap 1, right end cap 2, housing that connects and composes by left and right sides end cap 1,2 bolts and the transmission mechanism in the housing, worm screw 3 external parts of transmission mechanism are connected with driving handle one end, worm screw 3 and the engagement of worm gear 4 working flanks, worm gear 4 adopts the mode of radially keyway cooperation that worm gear 4 and gear 5 are connected as a single entity with the end face that contacts of gear 5, and the two ends of gear shaft 6 are positioned on left end cap 1, the right end cap 2 by bearings; The pinion of the gear 5 and first duplicate gear 7, the two ends of first double crosslinking gear shaft 8 respectively by bearings on left end cap 1, right end cap 2, the pinion of the gear wheel of first duplicate gear 7 and second duplicate gear 9, the ring gear engagement of the gear wheel of second duplicate gear 9 and pulley 12, second double crosslinking gear shaft is to constitute the connecting bolt of double as left end cap 1, right end cap 2 by the mode that hexagon socket head cap screw axle 10 adds axle sleeve 11.

Above-mentioned safe self-locking lifting appliance is applied to high-lift operation hanging cradle, and this device is installed on the hanging basket by mount pad 13, and wire rope is installed in the V-type groove of pulley 12.During Lifting basket, driving handle applies power source and gives worm screw 3 forward or backwards, worm screw 3 drives worm gear 4, because worm gear 4 is connected as a single entity with gear 5, so and then driven gear 5, gear 5 drives the pinion of first duplicate gear 7, and the gear wheel of first duplicate gear 7 drives the pinion of second duplicate gear 9, and the gear wheel of second duplicate gear 9 drives pulley 12.During aerial the stop, stop driving handle and get final product, because of worm gear 4 can not reverse drive worm screw 3, so automatic realization safe self-locking.

Above, describe the specific embodiment of the present utility model with reference to the accompanying drawings.But those skilled in the art can understand, and under the situation that does not depart from spirit and scope of the present utility model, can also do various changes and replacement to the specific embodiment of the present utility model.These changes and replacement all drop in the utility model claims institute restricted portion.

Claims (3)

1. safe self-locking lifting appliance, comprise left end cap, right end cap, housing that connects and composes by left and right sides bolt of cover and the transmission mechanism in the housing, it is characterized in that: described transmission mechanism, its worm screw external part is connected with driving handle one end, the engagement of worm and wheel working flank, worm gear and gear are connected as a single entity, the pinion of the gear and first duplicate gear, the pinion of the gear wheel of first duplicate gear and second duplicate gear, the engagement of the gear wheel of second duplicate gear and the ring gear of pulley, described each gear shaft two ends respectively by bearings in left end cap, on the right end cap.

2. safe self-locking lifting appliance according to claim 1 is characterized in that: described worm gear adopts the mode of radially keyway cooperation that worm gear and gear are connected as a single entity with contacting of gear on the end face.

3. safe self-locking lifting appliance according to claim 1 and 2 is characterized in that: described gear shaft is made of the mode that bolt shaft adds axle sleeve.

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