SU1611682A1 - Hydraulic puller for disassembly of pump rotor - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to devices for disassembling press-type joints of the shaft-bushing type, wherein the bushing can be located at a considerable distance from the end of the shaft. The purpose of the invention is to expand technological capabilities and increase productivity. The hydraulic puller consists of the crosspiece (T) 1 in the form of a pipe with grooves 2, grippers 3, hydraulic cylinder (G) 4 with stem 10 and bracket (C) 5. T 1 is mounted on the shaft, grippers 3 fix the part to be removed, and G 4 is installed such the way that its rod 10 rests on the end of the shaft. In the groove 2 T 1, closest to the end face of G 4, C 5 is installed, after which working fluid is supplied to G 4. The end face G 4 rests on the surface C 5, after which they move together with T 1. The part is removed. 1 hp f-ly, 2 ill.

Description

Fig

The invention relates to mechanical engineering, in particular, to devices for disassembling press-type joints of the shaft-hub type, and the sleeve may be located at a considerable distance from the end of the shaft.

The purpose of the invention is to expand technological capabilities and increase productivity.

FIG. 1 given hydraulic puller, general view; Fig, 2 - cylinder, section.

 The hydraulic separator contains the traverse 1 in the form of a pipe, in the walls of which through grooves 2 are made. At the traverse 1, three grippers 3, a hydraulic cylinder 4, which freely moves in the internal cavity of the traverse 1, are hinged. The hydraulic cylinder 4 is fixed in the traverse 1 by a clip 5. Fluid supply to the cavity The hydraulic cylinder travels straight through the fitting 6, into the return cavity through the fitting 7. The hydraulic cylinder 4 consists of a housing 8 in which the piston 9 moves with a sleeve 10. A cylindrical cavity is made in the stem 10, which is hermetically connected to tutserom 7 by means of the rubber ring 11. The rod 12 provided with holes arranged in close proximity to the surface of the piston 9 and connecting the internal cavity of the rod with the cavity of the reverse stroke of the hydraulic cylinder. When the working fluid is supplied through the nozzle 6, the piston 9 makes a working stroke, and when the fluid is supplied through the nozzle 7, it enters the cavity of the rod 10 and through the holes 12 into the hydraulic cylinder, making a reverse stroke of the rod. The hinges of the claws have friction pairs that prevent the spontaneous movement of the claws 3, i.e. support them when working is not necessary. The coaxiality of the shaft to be disassembled and the rod 10 of the hydraulic cylinder 4 is provided firstly by a small difference in the diameter of the cross member 1 and the shaft, secondly the conical protrusion at the end of the rod 10 of the hydraulic cylinder 4 enters the conical hole in the end face of the shaft to be disassembled.

Removing the parts from the shaft with the help of the puller and the puller is carried out as follows.

Traverse 1 is mounted on the shaft to be disassembled, the claws 3 are fixed with a fixed part at this point, then the hydraulic cylinder 4 is set in such a way that the rod 10

pirats in the end of the shaft. In the groove 2 of the crosspiece 1, located in the immediate vicinity of the hydraulic cylinder 4, the Bive bracket B is inserted; the nozzle B is supplied with the working fluid. The cylinder 4 begins to move to

placing its bottom into the bracket 5. After which it begins to move with the bracket 5 and the crosspiece 1, the part is removed from the shaft. If the working stroke of the hydraulic cylinder 4 is not enough to remove the part, then

the working fluid is in the nozzle 7 and the stem 10 is retracted, then the hydraulic cylinder 4 is moved to the shaft end, the clamp 5 is moved to the 4th groove adjacent to the cylinder, and the operation is repeated in the specified sequence until the parts are completely removed.

The puller allows you to remove parts located at different distances from the shaft end. During retooling, the parts are not required to be replaced, the crosshead is put on the end of the shaft and does not need to be held by hand.

Claims (2)

1. Hydraulic puller for rotor disassembly a pump containing a traverse in the form of a pipe with hooks hingedly mounted on it, hydrocyliidr. mounted in a pipe with the possibility of adjusting axial movement relative to the latter, as well as means for fixing the mutual arrangement of the crosshead and the hydraulic cylinder, characterized in that, in order to expand technological capabilities and increase productivity, the pipe is made longer than the length of the hydraulic cylinder body with the stem, and fixings are made in the form of through vapors placed on the surface of the pipe perpendicular to its axis, and the bracket installed in one of the grooves with the ability to interact with the end of the hydraulic cylinder. 2. Hydraulic puller pop. 1, characterized in that a double-acting hydraulic cylinder is used. V /////. ///////////////////// Л .X N. W /// X / L eleven / ten / I //// Л1Г / ШJ / .XXX 7U /////////// at //////////////////////////// :. / FIG. 2 ten / eight