RU2474696C1 - Machine of three-dimensional action - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: machine of three-dimensional action contains pistons mounted with possibility of movement in its cylinders with formation of working chambers, pistons are rigidly connected via rail that performs reciprocating movement and are connected to drive mechanism in a form of crank-and-rocker mechanism containing crank, rod and balancing lever, on the cylinders there are gas distributing elements in a form of valves, toothed sector attached to balancing lever, rail is toothed and is connected to sector via gear mechanism.

EFFECT: lateral forces affecting the piston are eliminated, friction forces arising in cylinder-piston assembly and machine material consumption are reduced.

3 cl, 1 dwg

Description

The invention relates to the field of volumetric action machines and can be used to create reciprocating compressors and pumps working by changing the volume of the working cavity.

Known machine volumetric action [patent No. 2334877], containing at least one piston and two cranks, which are installed in the groove of the drive mechanism connected to the piston, each crank connected to its own engine having a drive shaft with which the crank is connected. Both engines have a common single body, the shaft of one engine has a through hole through which the shaft of the second engine passes.

The disadvantages of the analogue include:

- increased overall dimensions, due to the presence in the design of the second engine and the second crank;

- a constant length of the stroke of the pistons, determined by the double length of the crank;

- insufficient reduction of lateral forces acting on the piston and leading to its wear, due to the impossibility of absolute synchronization of the engines, which leads to a warp of the wings.

A volumetric reciprocating machine is known, comprising a housing, a slider-crank drive mechanism, a cylinder mounted in a housing in which a cylindrical piston is formed which can move one or more working chambers with cylinder walls. The piston is connected to the drive mechanism. On the cylinder there are gas distribution bodies in the form of self-acting valves that interact with the gas in the cylinder of the working chambers [Reciprocating compressors: Textbook. a manual for students of the specialty "Refrigeration and compressor machines and units" / B. S. Fotin, I. B. Pirumov, I. K. Prilutsky, P. I. Plastilin; Under the total. ed. B.S. Fotina. - L .: Mechanical engineering. Leningra. Department, 1987. - p. 4-7].

The disadvantages of this surround machine are:

- increased overall dimensions due to the presence of a crank-slide mechanism;

- a constant length of the stroke of the pistons, determined by the double length of the crank;

- lateral forces acting on the piston and leading to its wear, due to the design features of the crank-slide mechanism.

Known machine volumetric action [Smelyagin A.I. Theory of mechanisms and machines. Course design: Textbook. - M .: INFRA-M; Novosibirsk: NSTU Publishing House, 2006 - p. 244-245], containing a four-link articulated (crank-rocker mechanism), to the beam of which is connected a rocker-slide mechanism with pistons that move in cylinders that are simultaneously guiding.

By the greatest number of similar features, this volumetric action machine is a prototype. The disadvantages of the prototype include:

- increased weight and size indicators, due to the presence in the design of an additional rocker-slide mechanism;

- the presence of lateral forces acting on the pistons and leading to their wear, due to the structural features of the rocker-connecting rod mechanism.

The objective of the invention is to provide a volumetric machine with improved characteristics.

The technical result is the elimination of lateral forces acting on the piston, the reduction of the friction forces arising in the piston-cylinder group, and the reduction in the material consumption of the machine.

The technical result is achieved by a volumetric action machine containing pistons mounted to move in their cylinders with the formation of working chambers, the pistons are rigidly interconnected by a rack, making a reciprocating movement, and connected to the drive mechanism in the form of a crank-beam mechanism containing a crank, the connecting rod and rocker arm, and on the cylinders are the gas distribution bodies in the form of valves, the gear sector is fixed to the rocker arm, the rack is gear and connected to the sector dstvom gear. The gear transmission is made in the form of a Novikov gear. The gear sector is removable.

The proposed volumetric action machine is compact by replacing an additional rocker-slide mechanism with a rocker with a fixed gear sector connected to the gear rack. The use of a gear cylindrical gear when connecting the gear sector to the gear rack will eliminate lateral forces acting on the piston and leading to its wear. The reduction of friction forces occurs due to the replacement of an additional rocker-slide mechanism with a rocker with a fixed gear sector connected to the gear rack. Changes in the length of the piston stroke are achieved due to the possibility of manufacturing a gear sector with different radii.

The drawing shows a General view of the machine volumetric action (compressor, pump). The machine contains: a four-link articulated joint consisting of a crank 1, a connecting rod 2, a rocker 3, on which a gear sector 4 is fixed, connected by means of a gear cylindrical gear (Novikov gear) with a gear rack 5, at the ends of which pistons 6 and 7 are fixed, which make reciprocating translational motion in cylinders 8 and 9, in which discharge valves 10, 11 and suction valves 12, 13 are installed.

Changing the size of the removable gear segment allows you to change the stroke of the proposed machine volumetric action.

The proposed machine surround action works as follows.

When the crank 1 rotates, the links 2 and 3 of the articulated four link come into motion. In this case, the rocker 3 with the gear sector 4 fixed on it makes a reciprocating motion, which is transmitted to the gear rack 5, forcing it to make a reciprocating motion. The gear rack 5, making a reciprocating motion, drives the pistons 6 and 7, moving in the cylinders 8 and 9. The movement of the pistons 6 and 7, respectively, in the cylinders 8 and 9 changes the volume of gas in the working chamber, which leads to opening (closing) discharge valves 10 and 11 and suction valves 12 and 13, respectively.

Claims (3)

1. A volumetric machine containing pistons mounted to move in their cylinders with the formation of working chambers, the pistons are rigidly connected to each other by a rail making a reciprocating movement, and are connected to the drive mechanism in the form of a crank-coradic mechanism containing a crank, a connecting rod and a rocker, and on the cylinders are gas distribution bodies in the form of valves, characterized in that it further comprises a gear sector, mounted on the rocker, the rack is gear and connected to sector through gearing. 2. The machine according to claim 1, characterized in that the gear transmission is made in the form of a Novikov gear. 3. The machine according to claim 1, characterized in that the gear sector is removable.

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