SU1414763A1 - Drive of load-handling mechanism - Google Patents

Abstract

The invention relates to lifting devices, namely lifting planetary drives, and can be used in drives of winches, elevators, etc. The purpose of the invention is to reduce the size and weight. The drive consists of a drive motor 1 connected to a cable-guiding body, drum 2, through a two-stage sinus-ball transmission, which includes driving, intermediate and driven links connected by balls located in the sinus treadmills of the links. 3 hp f-ly, 9 ill.

Description

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The invention relates to lifting devices, in particular to a fly-pinch-1 planetary drives.

. The aim of the invention is to reduce the size and weight, as well as the complexity of the drive assembly.

FIG. 1 shows the drive of the load-lifting mechanism with one-sided | first and two-sided second stages of the gearbox; in fig. 2 is a variant of a hoisting drive for an elevator with single and two steps; figure 3 -. | the same, with two-first and three-second second stages of the gearbox; | In FIG. 4 - fixed two-way intermediate; in fig. 5 - section; cut A-A in FIG. four; in fig. 6 - an intermediate link with two first and three second second stages; in fig. 7 is a scan of the outer surface of the link in FIG. 6; in fig. 8 - | internal surface sweep is shown in FIG. 6; in fig. 9 - package of corona-shaped and bicoron-shaped clips; two-strand link.

; The drive of the load-lifting mechanism; (Fig. 1) includes a drive: engine 1 mounted on a frame and connected to a trailing body -: drum 2 by means of a clutch made: integral with the pulley 3 brakes. The drum 2 is mounted on bearing supports 4 and contains a built-in twin-step sinus transmission consisting of a drive shaft 5 mounted in bearing supports 4, a driving link 6, intermediate moving 7., fixed 8 and driven 9 links and balls 10. Leading 6 intermediate the movable 7, the interval of the exact stationary 8 and the slave 9 links are made in the form of hollow cylinders mounted alternately on the drive shaft 5 and one on the other with annular radial gaps. At the same time, intermediate link 8 is installed on bearings of 11 c. the drum 2 is rigidly connected with the bearing supports 4, the driving link 6 is connected with the drive shaft 5 by a spline connection 12, and the driven link 9 with the drum 2 is a key 13 connection.

A lifting drive for an elevator (Fig. 2) consists of a traction head - a pulley 14 supported on bearing supports 15, mounted on frame 16, brake 17, driven

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e) a zigatator 18 connected with a sinus-ball two-step gear embedded in pulley 4, which contains a leading 19, a fixed first 20 stage, an intermediate 21, a fixed 22 second stage link and balls 23. The leading link 19 is installed in bearing supports 15, and its ends have a cantilever rotor of a driving motor 18 fixed to the left and a brake pulley 17 to the right, with link 19 being the shaft of both the drive motor and the sinus-ball transmission. The slave link is made together with the pulley 14, i.e. on the inner side surface of the hub of the traction sheave, a running sine track of the second-stage driven link is made. The fixed 20 link of the first stage, the intermediate 21 and the fixed 22 of the second stage link, as well as the pulley 14 are alternately mounted one on another: 20 by 19, 21 by 20, 22 by 2 and 14 by 22 with annular radial clearances enabling the links to rotate one relative to the other.

The proposed drive (Fig. 1) works as follows.

The torque from the drive motor is transmitted to the driving link 6 and from it, reduced by the driving 6, the fixed first step 7, the intermediate 8, the fixed second step 9, the driven I links and balls, to the traction driver and the lift body.

Another embodiment of equivalent design is. an elevator drive, in which a two-stage sinus transmission is filled with a multi-stage one, for example (FIG. 3) containing a two-stage first stage and a three-third stage. At the same time, it consists of balls 23, a drive shaft 24, a leading 25, a fixed 26 first stage, an intermediate 27, a fixed 28 second stage, and a driven 29 link. In this program, the drive link 25 is connected with the shaft, and the follower 29 is connected with the rope-leading organ — a pulley with 30 full-time 31 and 32 connections. Moreover, the driving and driven members are made in the form of single-sided packs (single-sided cages contain one sinus treadmill).

With the purpose of increasing the loadability of the ncpaoif section and the second stages of the sinusosharm transmission, many of them are performed, and in the first stage of the section, they are regular, and the second are integers. In this case, the longitudinal through slots under the balls on the intermediate links x in pairs

 . 360 °

shifted by an angle c, where t is the number of slots in one row in the sections of the first or second stage.

In order to reduce the labor intensity of the assembly, sections can be made in the form of a package of clips, including extreme corona-shaped, and intermediate bicon-shaped clips (Fig. 9).

The drive works as follows

The torque from the shaft of the drive motor 1 is transmitted by a clutch with a pulley 3 to the drive shaft 5, and from it to the driver link 6, reduced by means of intermediate links 7 and 8 and ball 10, the torque is transmitted from the driven link 9 via key 13 to drum 2.

The operation of the drive variants in FIGS. 2 and 3 is similar.

Claims (4)

1. A lifting mechanism drive comprising a drive motor-, the shaft of which is associated with a brake and a two-stage reducer integrated in a cable-guide body on sub-support supports and including a drive shaft, intermediate movable connected with bearing supports, fixed and driven members, made in the form of hollow cylinders and fitted one on top of the other with radial annular gaps, while all the home links are connected with the trailing authority, from the fact that, in order to reduce the size and weight, It is filled with sinusoscharic, and on the outer cylindrical surface of the drive shaft and the inner cylindrical surface of the driven members there are sinus treadmills for balls, and on intermediate links x through longitudinal slits for balls and / or sinus treads on the inner or outer cylindrical surface. 3 2. The drive according to claim 1, of tl and hn 10-1C and with the fact that the mentioned through slots in the moving intermediate links are made in the middle of the surface, and on the outer slots there are sinus tracks on both sides of the slots, the fixed intermediate links, the sinus inner tracks are made on the middle of the surface, and the cuts are on both sides of the track, while the gear ratio U is determined by the dependence () z; I II z.z, where z    periods of sinus treadmills, respectively, of the drive shaft, intermediate moving, intermediate non visible and driven links. 3. The drive unit according to claim 1, is different from the fact that the fixed through slots are made in the fixed intermediate links of the first and second stages, and the inner and outer running roads are filled in the moving intermediate links located between the fixed links - ki, while the gear ratio U is determined by the dependence: and 40 z, .z where z; z f  - the number of sinus neurodes treadmills respectively drive shaft, internal and external surfaces, moving link and driven link, 5Q 4. Drive on PP. 1-3, characterized in that the sinus treadmills are made up of multi-track ones, including the first first and second second stages, while gg, the leading link of the first stage is made in the form of an nth pack of clips mounted on the drive shaft, and the lower link of the second step is in the lead of a hrs pack of clips installed in | as the leading organ, with the leading shaft and the rope-leading organ connected to the respective sleeves of the spline or keyed joint, and. corner through slits in pairs Shifted one relative to the other by a certain dependency J 360 about 2t where t is the number of slots, packages clips at the same time, the outer rings are made crown-shaped, while the inner ones are bi-crown-shaped. (RI .2 L- tf Phi. (rig. 6 ag 7 e.9 Editor N. Gunko Compiled by A. Provorov Tehred M. Khodanych 1414763 CPii9.3 Proofreader G. Reshetnik