SU1551895A1 - Reduction gearing - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in worm, bevel-helical and other gearboxes containing a shaft mounted on bearings in a split housing and bearing caps, the axis of the shaft being perpendicular to the connecting surfaces of the housing and bearing caps. The purpose of the invention is to reduce the labor intensity of the assembly and increase the reliability of the gearbox in operation by ensuring the tightness of the housing. To obtain a positive effect on the shaft 1 and the covers 9, which press the conic bearings 5 against the worm gear 3 on both sides, install the thrust bearings 10, the retainer 11 and the ring 12 and compress the resulting chain of parts with a nut 13, which moves along the thread made at one end of the shaft 1. 1 Il.

Description

The invention relates to mechanical engineering and can be used in worm, bevel-helical and other gearboxes containing a shaft mounted on bearings in a split housing and bearing caps, the axis of the shaft being perpendicular to the connecting surfaces of the housing and bearing caps.

The purpose of the invention is to reduce the labor intensity of the assembly and increase the reliability of operation by ensuring the tightness of the case.

The drawing shows a single-stage worm gear, section.

The gearbox contains a shaft 1, on which, with the help of a key 2, a worm gear 3, which interacts with a screw 4, is fixed. . The axial bearing clearances are adjusted with the help of gaskets 8 installed between the flanks of the two covers 9 and the end surfaces of the housing parts 6 and 7. On the shaft 1 there are two thrust bearings I0, with the ring mounted on the shaft without clearance the end, and the second stick installed on the shaft with a gap, interacts with the end surface of the cover 9. The axial movement of the bearings 10 is limited by two clamps 11, made in the form of sleeves, one of which rests on the ring 12, and the second is pressed by the nut 13, screwed onto the threaded portion of the shaft 1 and the lock washer 14. Two cuffs 15 prevent the oil from flowing out of the gearbox.

The gearbox is assembled as follows.

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Shaft 1 with wheel 3 and bearings 5 are installed in housing bores

parts 6 and 7 and then install the cover 9. Next, on the shaft 1 and in the bores of the covers 9 install the thrust bearings 10, Catch 11, cuffs 15 and ring 12. Screw the nut 13 on the thread of the shaft 1, compress the chain of parts: sleeve 11, bearing 10, valve 9, bearing 5, wheel 3, second bearing 5, cover 9, bearing 10, sleeve 11 and cola 12. Then the gaps between the end surfaces of the covers 9 and the body parts 6 and 7 are measured, and the nut 13 is unscrewed and There are sets of gaskets 8, the thickness of which is larger than the measured clearances by the amount of axial clearance in the bearings 5 After this, tighten the nut 1 3 again and lock it with the washer 14.

The compression force in the threaded joint allows the lids to be pressed against the body parts 6 and 7 and to ensure the tightness of all surfaces.

three docking

Claims (1)

Invention Formula A reducer containing a split housing, a shaft mounted thereon on bearings, the roofs of which are pressed against the outer end surfaces of the housing, the plane of the connector of which is perpendicular to the shaft axis, a worm wheel mounted on the shaft, and a worm wheel, characterized by assembling and improving the reliability of operation by ensuring the tightness of the housing; a threaded section is made at one end of the shaft; .