UA21029U - Piston-type machine - Google Patents

Abstract

A piston-type machine has at least one cylinder with piston placed in it, two parallel, placed symmetrically with respect to the long axis of cylinder crankshafts that rotate in synchronous way in opposite directions, two con-rods connected to those and the bean. The beam connected by means of rod to piston, is taken out of it and placed outside cylinder with piston placed inside of drive section of the machine between the con-rods and crankshafts.

Description

Description of the invention

The utility model refers to pump, compressor and engine construction and can be used for 2 pumping a wide variety of liquids and gases, as well as as an internal combustion engine (ICE) for driving various stationary and transport machines.

Traditionally, the drive mechanisms of reciprocating machines (most piston pumps, powerful compressors and diesel engines) use crank-slider mechanisms, in which sliders perceive lateral forces, unloading pistons or plungers from them |Verzylyn O.I. Modern drilling pump. - M: 70 Mechanical engineering. - 1987. - 25bs; Frankel L.M. Piston compressor!. - L: Mechanical engineering. - 1978. - 5126.;

Diesels. Designer's reference manual. Ed. V.A. Wanscheidt -Mashgiz, M-L. 1957 - 233 p.; Simeon A.Z. etc. Internal combustion engines (thermal locomotive diesels and GTU). - M: Transport, 1980 Z384p.)). The presence of sliders increases the dimensions and weight of machines, a large part of which falls on their drive part.

A known technical solution |1), chosen as a prototype, containing at least one cylinder, 712 pistons with a piston pin placed in it, two parallel crankshafts rotating synchronously in opposite directions, and two connecting rods connected to them, the opposite ends of which are small heads are also connected by means of fingers to the rocker arm, which is placed inside the piston on the piston pin. A cylinder spring installed between one of the crankshafts and the gear, when the pressure in the cylinder increases, turns the shaft with the connecting rod and the corresponding end of the rocker arm around its finger.

This constructive solution limits the geometric dimensions of the rocker arm, fingers and small connecting rod heads, which are used to perceive all the forces acting on the piston, which worsens the load conditions of these elements and reduces the reliability and durability of their work. In addition, the asymmetrical position of the rocker arm with respect to the longitudinal axis of the piston causes a lateral load on the piston and, accordingly, increased wear of the cylinder-piston pair, and its location outside the drive part (above) increases the dimensions, weight and cost of the entire machine.

The basis of the useful model is the task of improving the piston machine by changing its structural (5) scheme due to the mutual placement of the piston with the rocker arm and the cylinder with the piston relative to the crankshafts, which will lead to an increase in the durability of the machine, a reduction in its mass, production and operating costs.

This problem is solved by the fact that in the "Piston Machine", which contains two parallel crankshafts that rotate synchronously in opposite directions, two connecting rods, a rocker arm, a cylinder with a piston and a valve distributor, according to a useful model, a cylinder-piston pair and connecting rods is located inside the drive part between the parallel crankshafts, and the rocker arm perpendicular to the cylinder axis is removed from the internal cavity of the piston and is also placed outside the cylinder with the piston, which is hingedly connected to the rocker arm by means of a rod. "--

The essence of the useful model is explained by the illustrative material, which shows the structural diagram 3 of the proposed piston machine (Fig.). high school

The piston machine contains two parallel crankshafts 2 installed in the housing 1, which rotate synchronously in opposite directions and are symmetrically located relative to the axis of the cylinder 8 with a piston 5 with a rod 9 placed in it, two connecting rods C, a rocker arm 4, intake b and exhaust 7 valves. At the same time, each FC crankshaft 2 is articulated with a connecting rod 3, the other end of which is articulated with a rocker arm 4, 740 brought out of the piston cavity 5 and connected to it through a rod 9 by means of a hinge. The rocker arm 4 is located Z c outside the cylinder 8 with the piston 5, which are located inside the drive part of the machine between the connecting rods Z and

I" by crankshafts 2.

A reciprocating machine works like this. The crankshafts 2, rotating synchronously, transmit their motion through the connecting rods of the rocker arm 4, which makes a reciprocating movement together with the rod 9 and the piston 5, loaded only with axial forces. Such a design scheme allows you to eliminate lateral forces on the piston, which are balanced on the rocker arm - which reduces the load on the body parts, increases the durability and reliability of the cylinder-piston pair, and, together with its placement inside the drive part, allows you to reduce the dimensions and weight of the piston machine. In addition, the placement of the rocker arm and its three joints outside the piston will allow to provide them with more than 20 favorable load conditions, that is, as a result, to increase the durability of their work. All this will generally lead to a decrease in production and operating costs, as well as to an increase in the efficiency of the piston machine.

Design studies of two variants of three-cylinder piston pumps with the same parameters (0-250mU/h; p-10MPa) showed that the piston machine with the proposed structural scheme is 1.23 tons lighter than the piston machine made according to the prototype scheme. c Source of information: 1. Author's certificate of the USSR Mo1682613 JSC, cl. E02875/32, 07.10.91, Bull. Mo37.

Claims (1)

60 Formula of the invention A piston machine containing at least one cylinder with a piston placed in it, two parallel, symmetrically located crankshafts with respect to the longitudinal axis of the cylinder, rotating synchronously in opposite directions, two connecting rods connected to them and a rocker arm, which differs in that the rocker arm, connected to with the help of a rod with a piston, taken out of it and placed outside the cylinder with a piston, which are located inside the drive part of the machine between the connecting rods and crankshafts. - (about) c "c) "- c - c i" name) - ((c) from 50 3e) p. 60 b5