RU175010U1 - ROTOR WITH Dismountable Persistent Collar - Google Patents

Abstract

The utility model relates to mechanical engineering and can be used in the construction of rotors of various machines and mechanisms, for example, centrifugal impeller pumps (single and multi-stage, axial, diagonal, etc.), turbines and other equipment. The rotor with a collapsible thrust collar comprises a shaft 1 with an annular groove 2, in which a split ring 3 is located (for example, made of two half rings), enclosed by a solid ring 4 with an external thread 5. An additional sleeve 6 with an internal thread 6 is also installed on the shaft 1, mating external thread 5 of the ring 4. To tighten the elements 4, 6 at their ends to install a special technological key (not shown), slots 7 and 8 are made, respectively. The installation of the rotor with collapsible thrust collar is as follows. A split ring is placed in the groove 2 of the shaft 1, a whole ring 4 and a sleeve 6 are mounted on the shaft 1 and screwed to the stop, as shown in the drawing. In this case, the assembly of parts 3, 4, 6 is reliably fixed on the shaft 1, forming a thrust shoulder 9 of the shaft 1. The collapsible thrust shoulder 9 made of parts 3, 4, 6 thus obtained does not disintegrate after assembly and can absorb axial load opposite directions, is the advantage of the proposed design over the well-known technical solutions. Using the utility model significantly expands the scope of the rotor with collapsible thrust collar. 1 p. Fs, 1 ill.

Description

The utility model relates to mechanical engineering and can be used in the construction of rotors of various machines and mechanisms, for example, centrifugal impeller pumps (single and multi-stage, axial, diagonal, etc.), turbines and other equipment.

When creating rotors of various machines, including shafts with parts such as discs or wheels mounted on them, it becomes necessary to create stops that fix the position of the parts relative to the shaft end. The role of these stops is performed by annular beads rising above the other surfaces of the shaft.

Known rotor shaft with a collar made with it in one piece [P.I. Orlov, "Fundamentals of Design", Book 1, M .: Mechanical Engineering, 1988, p. 348, fig. 345].

A disadvantage of the known design is the high consumption of metal in the chips.

As a prototype, a rotor with a collapsible thrust collar was selected, containing a shaft with an annular groove in which a split ring was installed, covered externally by a single ring [P.I. Orlov, "Fundamentals of Design", Book 1, M .: Mechanical Engineering, 1988, p. 349, fig. 347 "m"].

In the known construction, it is possible to create conditions for putting on a shaft of several parts with the same hole diameter by shifting a solid ring along the shaft and removing a split ring from the shaft groove. This saves metal, as the workpiece for the shaft can be selected with a smaller diameter than the outer diameter of the shoulder.

However, the known design has several disadvantages, namely

1. The collar breaks up into its component parts (split ring and solid ring) when removing the load on the thrust end of the solid ring, since the force contact between the split ring and the solid ring disappears. Thus, a collapsible collar of the rotor cannot exist as an independent product without other parts of the rotor.

2. The bead perceives only one-sided load - only in the direction in which the solid ring is pressed against the split ring. In other words, this design has a limited scope, since there are structures in which the parts are located on both sides with respect to the shoulder.

All this as a whole reduces the scope of the rotor with a collapsible thrust collar.

The objective of the utility model is to expand the scope of the rotor with a collapsible thrust collar.

The problem is solved in that in the rotor with a collapsible thrust collar containing a shaft with an annular groove in which a split ring is installed, which is externally covered by a solid ring, according to a utility model, an external thread is made on the solid ring, which engages with the internal mating thread of the additional integral sleeve with the possibility of fixing the split ring on the shaft ugly between the solid ring and the sleeve.

The utility model is illustrated in the drawing, which shows a longitudinal section of a rotor with a collapsible thrust collar.

The list of positions in the drawing:

1 - shaft;

2 - annular groove;

3 - split ring;

4 - a single ring;

5 - external thread of the ring;

6 - sleeve;

7 - slot of the ring;

8 - slot of the sleeve;

9 - collapsible shoulder.

The rotor with a collapsible thrust collar comprises a shaft 1 with an annular groove 2, in which a split ring 3 is located (for example, made of two half rings), enclosed by a solid ring 4 with an external thread 5. An additional sleeve 6 with an internal thread 6 is also installed on the shaft 1, mating external thread 5 of the ring 4. To tighten the elements 4, 6 at their ends to install a special technological key (not shown), slots 7 and 8 are made, respectively.

The installation of the rotor with collapsible thrust collar is as follows.

A split ring 3 is placed in the groove 2 of the shaft 1, the integral ring 4 and the sleeve 6 are mounted on the shaft 1 and screwed to the stop, as shown in the drawing. When this occurs, the assembly parts 3, 4, 6 are reliably fixed on the shaft 1, forming a thrust shoulder 9 of the shaft 1.

Thus obtained collapsible thrust collar 9, consisting of parts 3, 4, 6, does not disintegrate after assembly and can absorb axial load in opposite directions, is the advantage of the proposed design over the known technical solutions.

Using the utility model significantly expands the scope of the rotor with collapsible thrust collar.

Claims (1)

A rotor with a collapsible thrust collar, comprising a shaft with an annular groove in which a split ring is mounted, enclosed by a solid ring, characterized in that an external thread is made on the solid ring, which engages with the internal mating thread of the additional integral sleeve with the possibility of fixing the split ring on the shaft Contrary between a single ring and a sleeve.

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