SU1412938A1 - Removing tool - Google Patents

Abstract

This invention relates to a hand-held press-release tool. baths on the shaft of parts and can be used to dismantle large parts from the shafts of electric motors. The purpose of the invention is the expansion of technological capabilities. The puller contains the base 1, fastened on it the power screw 2 and the nut 3. The power screw 2 has a stepped hole 4 for accommodating the rod 6 with a thread at one end 7, designed to prevent the thread of the power screw 2 and nut 3 from breaking off. 7 rod 6. For removing parts from shafts of various lengths, the puller is provided with stepped glasses, one of which (8) is mounted on nut 3, and each subsequent glass 9 is set to a lower level by a larger step. Two or three pullers are used to remove the part from the shaft. Removal of parts is carried out by creating a thrust force that occurs when the nut 3 is rotated. 1 a.p. fl-ly, 2 ill. with W

Description

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The invention relates to hand-held devices for removing parts pressed on shafts and can be used for dismounting large-sized parts from electric motor shafts.

The purpose of the invention is the expansion of technological capabilities by increasing the range of parts to be removed.

FIG. 1 shows a general view of the puller J in FIG. 2 - installation of the puller when parts are removed from the electric motor shaft.

The puller contains a base 1, a power screw 2 and a nut 3 fixed on it. In the power screw 2 there is an extra axial stepped hole

4, the nut 3 is made in the form of a glass with an axial threaded hole in the bottom

5. In the hole 4 of the power screw 2, there is a step 6 along the length with a thread at the end 7 of a smaller step placed in the threaded hole of the bottom 5.

The puller is provided with additional inserts made in the form of step glasses, one cup 8 is mounted on nut 3, and each subsequent cup 9 is set to a lower level by a larger stage, For installing the puller on the shield 10 of the electric motor, base 1 has a removable part 11, secured to it with fastening elements 1 2.

The puller works as follows.

The base 1 is mounted on the shield 10, the nut 3 ends up against the removable part 13. For dismantling, two or three (depending on the shape of the removable part 13) puller are used, each of which is installed in the indicated way. Alternately rotating the nut 3 of each puller, the parts 13 are removed. Rotating, the nut 3 rises along the threads of the power screw 2, while the rod 6 rises together with the nut 3 and prevents the thread from breaking, resting a greater step on the bottom 5.

If it is impossible to remove the nut 3 in one stroke, the nut 3 is rotated in the other direction, then the cup 8 is installed on it and the operation is repeated.

If it is impossible to remove the part 13 because of the large length of the shaft on which it is installed, glass 9 is placed on the cup 8, and so on until the complete removal of the piece 13.

Claims (1)

1. Remover containing base, fastened on it a power screw and a nut, characterized in that, in order to expand technological capabilities, an axial stepped hole is made in the power screw, the nut is made in the form of a glass with an axial threaded hole in the bottom, and the puller is provided with a stem with a threaded rod installed at the end of the power screw with a thread at the end of a smaller stage placed in the screw hole of the cup 2, the puller of claim 1, of which is equipped with inserts in the form of stepped glasses, one of which is coaxially mounted on the nut, and each subsequent major step is set to a smaller step of the previous one. N