Device for balancing rectilinear reciprocation of power plant

FIELD: mechanical engineering.

SUBSTANCE: device comprises mechanism of carrying the reciprocation of the power plant and balancer. The carrying mechanism is made of a rod with double-action piston. The double-action piston is mounted in the oil chamber and rigidly connected with the working rods of the power plant. The balancer is made of cylindrical bushing set on the side surface of the double-action piston of the carrying mechanism. The balancer is also in a contact with the inner surface of the oil chamber for permitting rectilinear reciprocation under the action of the oil pressure in the direction opposite to that of the rod of the carrying mechanism.

EFFECT: simplified structure and enhanced reliability.

1 cl, 2 dwg

 

The invention relates to mechanical engineering and can be used for balancing mechanisms, for example, the internal combustion engine.

A device for balancing a rectilinear reciprocating motion, for example, the piston of the internal combustion engine, made in the form of tide on the crankshaft of the engine moving in the direction opposite to the direction of movement of the piston. In this case, if the piston moves rectilinearly, the counterweight - curve trajectory and creates a secondary unbalanced forces of inertia and vibration (Avenne. "Internal combustion engines of construction and road machines", Moscow, Higher school", 1986, p.14-16, figure 4).

A device for balancing a rectilinear reciprocating movements of the pistons of the engine, made in the form of additional shaft to balance the moments of inertia forces by means of rotating in opposite directions balances (balances) on crankshaft and balance shaft.

This device is complicated in construction, requires increasing the size of the device installation additional nodes, creating additional friction, which reduces the efficiency of the device (Unaskable. "A modern economical car", Moscow, Mashinostroyeniye, 1987, str, RES).

A device for balancers and internal combustion engine by matching the sum of the masses of the piston rods, lying in the same plane passing through the cranks of the crankshaft is equal to the sum of masses, respectively, pistons and connecting rods lying in each of the planes passing through the cranks of the crankshaft (Avts No. 1527430, MCL 4 F 16 F 15/22, publ. 07.12.89, bull. No. 45).

Known closest to the proposed device for balancing piston machine, for example, engine containing a crank mechanism of perception reciprocating motion of the piston and convert it into rotational and balancer.

The balancer is made in the form of a massive ring with a mass greater reciprocating the moving mass of the piston group. The ring worn on the outer cylindrical surface of the skirt of the cylinder. On the neck rings put on the top of the head connecting rod balancer, and the lower head mounted on the neck of the crankshaft is shifted by 180° relative to the neck of the piston rod.

When moving the piston motion is transmitted to the connecting rod and crank pin, producing a rotation of the crank, causing the movement of the rods, resulting in forward motion of the balancer moving out of phase with the piston (Avts 1439327, MCL 4 F 16 F 15/26, publ. 23.11.88, bull. No. 43, Prototype)

In this device, the transfer of force to move the balancer is rods, and since the power transmitted by the connecting rods, mainly nekoosa with the direction of the movement of the balancer, this leads to mechanical losses, heat and wear and reduces reliability. The use of a connecting rod-crank mechanism complicates the design, increases the cost of manufacturing complicated crankshaft, connecting rods, connecting rod bearings and mounting fingers for balance.

The objective of the invention is to simplify the design, increasing reliability.

This task is achieved by a device for balancing the rectilinear reciprocating motion of the power unit, containing the mechanism of the perception of movement of the power unit and the balancer, the mechanism of perception of movement of the power unit made in the form of a rod with a piston double-acting installed in the oil chamber and connected with the working piston of the power unit, and the balancer is made in the form of a cylindrical sleeve mounted on the side surface of the piston mechanism of the perception of movement and contact with the inner wall of the oil chamber with the possibility of reciprocating movement in the direction opposite to the moving rod with a piston under pressure.

It is possible to install between the inner surface of the balancer and the side surface of the piston partitions.

The drawings depicted: figure 1 - General view of the device (longitudinal section), 2 - the same, with the installation of re is ordci.

Device for balancing the rectilinear reciprocating motion of the power unit, such as a reciprocating engine mechanism contains a 1 perception reciprocating motion from the power unit 2 (figure 1), for example, two-piston fail engine, and the balancer 3.

The perception mechanism of the reciprocating movement 1 made in the form of rod 4 with the piston 5 double-acting installed in the oil chamber 6. The shaft 4 is rigidly connected with the working piston rods 7, 8 of the power unit 2 directly, being a continuation of one another, or with their pistons 9, 10.

Oil chamber 6 is divided by the piston 5 into two parts.

The balancer 3 made in the form of a movable in the longitudinal (axial) direction of the cylindrical sleeve mounted on the side surface of the piston 5 of the engine 1 and in contact with the inner surface 11 of the casing wall 12 oil chamber 6.

In case you need to expand your ability to increase the stroke length of the reciprocating movement of the piston 5 and the rocker 3 with the smaller size of the device it is possible to install partitions 13 (figure 2) between the inner surface of the rocker 3 and the side surface of the piston 5. The partition 13 is rigidly connected to the housing 12 oil chamber 6, for example, by stops 14.

The device operates as follows. The reciprocating movement of the servant of the hot rods 7, 8 of the power unit 2 is transmitted to the rod 4 and the piston 5, for example, in the direction AA1(left to right). This move increases the oil pressure in the right side oil chamber 6. The pressure created by the piston 5, is transmitted to the end surface of the balance weight 3 and produces its movement in the direction opposite to the direction of movement of the shaft 4, i.e. in the direction of A1A, the product of mass and the path length of the balance weight 3 is equal to the product of the total mass of all reciprocating parts of the power unit (pistons 9, 10 with the rods 7, 8) and connected to a mechanism 1 perception of the reciprocating movement of the rod 4 with the piston 5) by the length of their stroke, that is, the impulses are equal, than is achieved by balancing the stroke of the power unit.

The device for balancing with the perception mechanism of the reciprocating motion in the form of a rod with a piston double-acting installed in the oil chamber and rigidly connected to the working rod of the power unit, and the execution of a stabilizer in the form of a cylindrical sleeve mounted on the side surface of the piston mechanism of the perception of movement with the ability rectilinear reciprocating movement in the direction opposite to the moving rod, eliminates the need for a crank, milling the MOU, to eliminate the transmission angle, to reduce mechanical losses and wear.

1. Device for balancing the rectilinear reciprocating motion of the power unit, such as a piston engine, containing the mechanism of perception of the reciprocating movement of the power unit and the equalizer, characterized in that the perception mechanism of the reciprocating movement of the power unit made in the form of a rod with a piston double-acting installed in the oil chamber and rigidly connected to the working rod of the power unit, and the balancer is made in the form of a cylindrical sleeve mounted on the side surface of the piston double-acting mechanism of perception of the reciprocating movement of the power unit and in contact with the inner wall of the oil chamber with the possibility rectilinear reciprocating movement in the direction opposite to the moving rod of the mechanism of perception of the reciprocating movement of the power unit under the influence of oil pressure.

2. The device according to claim 1, characterized in that between the inner surface of the balancer and the side surface of the piston double-acting installed partition.



 

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