SU918599A1 - Worm-cylinder gearing - Google Patents

Description

(54) WORM-1 "INDUSTRIAL TRANSFER

. . : I. ;.

A: The design relates to mechanical engineering, namely, gears to transform a continuous movement into rotary or tia rotation, and is applicable in rolling mills.

The worm is known as a 1-pinion gear, comprising a housing, two shafts mounted in parallel, kinematically connected by a pair of helical gears, one of which is axially rotated to a pair of worm wheels coaxially with helical helical wheels and. interacting with them worms to 1.

The disadvantages of the known gear are the impossibility of using it for returning an accessory stroke and low load capacity.

The purpose of the invention is to increase the load carrying capacity.

This goal is achieved by the fact that the screw-cylindrical gear is equipped with a device for ensuring one-way simultaneous contact of the screw with a screw-shaped impeller wheel, made in the form of a nut and counter-bolt, located on both sides of the air duct.

That helical helical wheel, and the screw to set with the possibility of reciprocating axial movement.

FIG. 1 shows a chervical cylindrical gear, a section (power version), FIG. 2 is a section A-A in FIG. one; in fig. 3 - worm gear rack, longitudinal section (kinematic version) f and a fig. 4 shows a section BB in FIG. 3

Chervno cylindrical gear contains

10 housing 1, a worm to 2, which engages on both sides with two worm gears 3 and 4 of the same diameter, a cylindrical helical gear 5, movable in the axial direction on the shaft 6, interacting with

15 with a helical spur gear 7, fixed on the shaft 8, bushings 9 and 10, which serve as guide bearings for the screw 2.

Moving the rolling helical gear 5 with the nut 1 and the lock nut 12

Claims (1)

It is possible to adjust and fix the angular position of the worm gears 3 and 4, which ensures simultaneous contact of the screw thread of the worm 2 with one-sided B or H tooth profiles of both of the worm gears 3 and 4, which determines the uniform distribution of the screw 2 attached to the worm loads equally on the teeth of both worm wheels 3 and 4. The worm gear is kinematic ((. 3 and 4)) is small in size, since the main transmission elements are not loaded. The worm gear is in K1 mathematics. Completion contains a compression spring 13, installed between: 1 and a nut Pi {axially movable helical gear 5. In addition, a sleeve 14 is provided for coupling the screw with the tool (not shown containing the protrusion 15 at the bottom end of interacting with the internal spitz 16 of the clutch 14, rigidly fastened with a screw 17 of the working body of the machine The screw-cylindrical gear works as follows. In the power shaft 8, the screw 4 fixed on it is the screw-wheel 4 and the right-hand wheel 3 n {4 go gyusroyrtvom ilindricheskoy helical yary 5 and 7 and the driven shaft 6. In sshhrshyuom Jun in cing to ec 3 and 4, obeshechs eAShM closed loop engagement, {X cpaib et «their constant contact with the smooth chervykom 2 and RETURN o-translational eremshenie. In a kinematic epolish, a screw 17, rotating & {its nut and nut (in the drawing is not indicated), makes the rotational movement “stop”. Both of these movements are transmitted through a muff) LH Worm 2, which, BsaHMoj lcrrayjt with wheels 3 4, sundry these damages and transforms them into each shaft S. Under the influence of Prushša 13 Ifoneco 5/11, along axis 6, rotates the worm gears 3 and 4 in opposite directions by obliquely engaging the wheels 5 and 7, thereby selecting the gap in the closed loop engagement and the tight contact of the screw thread of the screw with the versatile (B and H) tooth profiles of both worm gears wheels Tash {iko-economical effect of the worm-cylindrical transmission is expressed in increasing the reliability and durability of the mechanism with increased load capacity and economical execution technology. In addition, the constant backlash-free contact of the hooking elements ensures insensitivity to shocks and vibrations, such as in rolling mills. The invention of the worm is a chassis gear, comprising a housing, two parallel shafts installed in it, which are chesmatically linked by a pair of helical gear wheels, one of which is movable in the axial direction, a pair of worm wheels coaxially with helical helical gears, and interacting with them the worm, which in order to increase the load capacity of the Transmission, is equipped with a device for ensuring one-way simultaneous contact of the worm with a worm wheel, in the form of a nut and rp to the nut located on both sides of the movable helical 101li1schricheskogo wheels, and Th | t to ustshovlen vozvratnopostupatelnogo with the possibility of axial movement. Telephony of information taken into account in the examination I. Inspection certificate of the USSR N 150277, cl. F 16 H 1/16, 1961 (prototosh). 6-6 918599