RU2597627C1 - Device for fixation of equipment alignment - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device for fixation of alignment equipment comprises formed on the frame (1) support elements (2) with openings to accommodate fasteners in the form of pins (3) and lock nuts (4), as well as key (6) rigidly connected to the housing of the equipment. Key is arranged between support elements. Adjacent heel block (7) is located between the fastening elements and the key. Mating surfaces of fastening elements and the heel block are made spherical for compensation of angular misalignment of the key and heel block surfaces. Heel block is connected with studs by screws (8).

EFFECT: higher accuracy and reliability of fixation of alignment of equipment on the frame.

5 cl, 5 dwg

Description

The invention relates to mechanical engineering and can be used in compressor technology in the design of compressor units or other equipment.

A device for fixing the alignment of the compression housing is known, comprising dowels located in the lower part of the compression housing on the drive and on the free side, which are clamped on both sides by bolts screwed into threaded holes in the support elements welded to the frame. After final alignment of the compression housing, the position of the bolts is locked with locknuts. (VB Shnepp. Design and calculation of centrifugal compressor machines. M: Mechanical Engineering, 1995, Chapter 5, Section 5.1, Section 209, Figure 5.5).

The known device is simple and manufacturable, but at the same time has the following disadvantages:

- the contact area of the surfaces forms a line or point;

- the device is not able to perceive large dynamic loads due to deformation (hugging) of the connection surfaces;

- there is no mechanism for compensating non-parallelism of mating surfaces;

- the reliability of fixing the connection with bolts and locknuts is not ensured, leading to misalignment of the equipment.

The problem to which the claimed invention is directed is to increase the accuracy and reliability of fixing the alignment of equipment on the frame due to the possibility of compensating for the parallelism of the mating surfaces, ensuring their tight fit to each other and the absence of their embrace during the operation of the equipment.

The technical result is achieved by the fact that in the device for fixing the alignment of the equipment, containing support elements formed on the frame with holes, a key placed between the support elements, rigidly connected to the equipment case, and fastening elements located in the holes of the support elements, adjacent to the key is installed adjacent to a persistent heel, and the mating surfaces of the fasteners and the persistent heel are made spherical, while the fasteners are made in the form of studs, fixed s in the holes of the supporting elements with lock nuts. In addition, the thrust heels are connected to the studs by means of screws, the lock nuts and studs are made with external key slots, and the keys can be fixed in the keyway made on the equipment case.

The implementation of the mating surfaces of the stud and heel spherical provides the possibility of their mutual movement along the sphere, due to which it is possible to compensate for the skew of the thrust surfaces, providing a tight fit of the heel to the key. The reached position is fixed by a lock nut made with external keyless slots. The connection of the heel to the studs with screws prevents the heel from falling out.

The invention is illustrated by drawings, where in FIG. 1 presents the proposed device for alignment of equipment; in FIG. 2 shows the mounting of a compression housing with a lower arrangement of nozzles; FIG. 3 is an enlarged view A of FIG. 2; in FIG. 4 shows the fastening of the housing with the lower location of the support legs, in FIG. 5 - location B in FIG. four.

The device for fixing the alignment of the equipment contains support elements 2 formed on the frame 1 with threaded holes, in which the studs 3 with external key slots are installed and the lock nuts 4 with external key slots. On the compression body 5, dowels 6 are formed, located between the supporting elements 2. A stop heel 7 is mounted between the studs 3 and the key 6, which is connected to the studs 3 by screws 8. The mating surfaces of the studs 3 and the heel 7 are made spherical with the possibility of their mutual movement along the sphere, with this heel 7 in the pressed position fits snugly to the key 6 throughout the plane.

In the case of fastening the compression housing 5 with an upper nozzle arrangement, the keys 6 are formed in the lower part of the cylindrical housing from the drive and its free sides.

When attaching the compression housing 5 with the lower location of the nozzles (Fig. 2), suction plates 9, 12 with a centering keyway are formed on the suction 9 and injection 10 nozzles of the compression housing. A key 6 is installed in this groove, which is fixed on the housing by means of fastening elements 13, made in the form of studs, nuts and lock washers with folding tabs. The position of the keys 6 is fixed by the proposed device.

When attaching the housing with the lower location of the support legs, a centering keyway is formed in the rib between the legs of the compression housing from the drive and the free side (Fig. 4). A key 6 is installed in this groove, which is fastened with pins 14, nuts 15, which are locked by lock washers 16 (Fig. 5). The position of the keys 6 is fixed by the proposed device.

The final fixation of the alignment of the compression housing is carried out after installation of all communications with the set screws 17, 18 (Fig. 2, 4) and surface treatment of the plate 19, ensuring a tight fit of the plates to the supporting surfaces of the legs of the housing 5 and frame 1. The fit is controlled by a probe with loose fastening paws.

After that, the transverse position of the compression housing 5 is fixed, moving along the sphere of the mating surfaces of the studs 3 and the heel 7 to compensate for the skewness of the thrust surfaces and ensuring a tight fit of the heel 7 to the key 6. The reached position is fixed by a lock nut 4.

After fixing the compression housing 5 by the proposed device, the set screws 17, 18 loosen.

The proposed device contains a mechanism for compensating for the parallelism of the mating surfaces and provides a snug fit to each other. Such a design allows multiple centering of equipment at the customer’s site.

The device provides reliable fixation of the housing for the entire period of operation of the equipment due to the tight fit and lack of hugging of mating surfaces.

The device can be used on various types of compression housings with a different arrangement of nozzles and with a different arrangement of support legs.

Claims (5)

1. A device for fixing the alignment of equipment, comprising support elements formed on the frame with holes, a key placed between the support elements, rigidly connected to the equipment case, and fastening elements located in the holes of the support elements, characterized in that an adjacent to the fastening elements and key a persistent heel, and the mating surfaces of the fasteners and the persistent heel are made spherical. 2. The device according to p. 1, characterized in that the fasteners are made in the form of studs, fixed in the holes of the supporting elements with lock nuts. 3. The device according to p. 2, characterized in that the thrust heel is connected to the studs with screws. 4. The device according to p. 2, characterized in that the studs and lock nuts are made with external slots on a turn-key basis. 5. The device according to p. 1, characterized in that the key is placed in the keyway made on the equipment body.

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