KR970002942B1 - Connecting rod with universal joint of reciprocating internal combustion engine and reciprocating pump - Google Patents

Abstract

In a cylinder of a cylinder head(20) a ball shape(24) is connected to a spider(25) of a ball joint connecting rod of a piston(1) with fixing bolts(22a) or rivets. After inserting the ball shape(24) of the spider(25) to slip in a groove(23) of the upper and lower bearings(21)(21a), the bearings(21)(21a) are fixed with fixing bolts. A lower pin hole(25a) of the spider(25) and an upper pin hole(26a) of the lower link(26) are provided to fit into each other and are fixed with a lower pin(27). A crank pin(7) is inserted into the lower link(26) and a connecting rod(6) and are fixed with a connecting rod cap bolts(5). Then, the relative position error in relation to a crank shaft(2) and the piston(1) are possible to be automatically compensated.

Description

Universal joint type connecting rod for reciprocating internal combustion engine and reciprocating pump

1 is a cross-sectional view of main parts of the present invention.

2 is a partial cross-sectional view of the system.

3 is a cross-sectional view showing an embodiment to which the present invention is applied.

4 is a cross-sectional view showing a conventional connecting rod.

FIG. 5 is a cross-sectional view of an embodiment to which FIG. 4 is applied.

* Explanation of symbols for main parts of the drawings

1: piston 2: crankshaft

5: connecting rod cap bolt 9: piston pin

10: cylinder head 6: connecting rod cap

11: Cylinder 20: Ball Joint Connecting Rod (Ball-Joint-Connecting-Rod)

21,21a: Upper and lower bearings 22,22a: Fixing bolt

23: home 24: sphere

25: Speeder 25a: Lower pin win

26: Lower-Link 26a: Upper pin ball

27: Lower-Pin

According to the present invention, a reciprocating internal combustion engine using gasoline, diesel, or other fuel has a piston for linear (reciprocating) movement by pushing a piston inside a cylinder with a force generated when the fuel explodes, and a crank for rotational movement. A reciprocating internal combustion engine and reciprocating system that converts a linear (reciprocating) motion into a rotary motion by connecting it to a shaft, or transmits a rotational motion of a crankshaft to a piston performing a linear (reciprocating) motion so that it can be used for compression transfer of a fluid. It relates to a universal joint type connecting rod of a pump.

In general, as shown in FIGS. 3 and 4, the force of the piston 1 reciprocating in the cylinder 11 of the cylinder head 110 is Piston-Pin 9 Crank-Pin (7) is transmitted to the crank-pin (7) through the connecting rod (8) and the connecting rod (8) and the crank-shaft (2) is rotated by the force transmitted.

A connecting rod cap 6 for assisting such a basic operation serves to surround the crank pin 7, and a connecting rod cap 5 is connected to the connecting rod cap 5. 8) and the connecting rod cap (6).

In addition, the counter-welght (3) has an inertial mechanical action, and the crank-web (4) has a connecting rod (8) with an axial movement on the crank tube (7). It is configured to prevent.

In this arrangement, the connecting rod 8 compensates the relative positional error of the cylinder block and the crankshaft 2 by spacing 15 at the connection connecting the piston 1 and the piston pin 9. The action is a sliding compensation, which always leads to bending of the connecting rod and waste of noise and fuel. The gap 15 can only compensate for a position error in a direction that is exactly parallel to the crankshaft 8, and a position error in other directions is not compensated.

Therefore, when the piston (1) connecting rod (8) and the crankshaft (2) are assembled together completely, if the three parts are not aligned correctly in the relative position and the right angle, they may cause severe friction at each other. There are loud noises and severe vibrations, and thus there is a waste place where fuel is wasted and the machine wears out quickly.

Therefore, in order to compensate for errors occurring in all directions in three-dimensional 360 degrees (4 pi omega angles) when manufacturing an engine, the diameter of the piston is always made much smaller than the diameter of the cylinder, so that the use of a large gap is inevitable.

Thus, various piston rings are used to reduce fuel leaks between the wide gaps between the cylinder and the piston and to prevent engine oil from entering the combustion chamber.

Although the piston rings reduce fuel leakage and combustion chamber penetration of the engine oil, the large spaces between the piston cylinders can eliminate the undesired collisions that occur due to the engine's unnecessarily excessive vibration, noise and abnormal mechanical wear. And waste of fuel, pollution, etc., and since the connecting rod is rigid, the limit of error allowed in the process of machining the crankshaft is extremely limited, making the crankshaft difficult. The processing machine is abnormally expensive equipment and there is a problem that the production yield (收 率) falls.

The present invention has been made to solve the above problems, and when the connecting rod is a ball joint type (Ball Joint), even if the relative position and the right angle of the piston and the crankshaft deviated, the abnormal friction, noise, vibration at all Since the back light does not occur, the pollution, such as noise, vibration and malignant exhaust gas, is greatly reduced, as well as the natural fuel savings and the level of the machine can be doubled.

Hereinafter, described in detail by the accompanying drawings of the present invention.

20 is a ball joint connecting rod (Roll-Joint-Connecting-Rod), the universal joint connecting rod (20) is the upper and lower shaft support for fixing the fixing bolt 22 in the piston (1) of the cylinder head (11) 21) (21a) are installed, and the spheres 24 slipping in the grooves 23 of the upper and lower bearings 21 and 21a are fixed to the speeder 25 as fixing bolts 22a. The lower pin hole 22a of the speeder 5 coincides with the upper pin hole 26a of the lower link 26 to be arranged as a lower pin 27 and cranks the crank. The lower link 26 and the connecting rod cap 6 are fitted to the crank pin 7 of the shaft 2 to be fastened with a connecting rod cap bolt 5 so that the relative position between the piston 1 and the crank shaft 2 is established. The error is automatically compensated.

Referring to the effect of the present invention configured as described above are as follows.

First, in order to assemble the present invention, the ball 24 connecting the sphere 24 to the speeder 25 of the ball joint connecting rod 20 to the piston 1 reciprocating in the cylinder l1 of the cylinder head 10, the fixing bolt 22a Or it is fixed with a rivet or the like, and the sphere 24 of the speeder 25 is slipped in the groove 23 of the upper and lower bearings 21 and 21a, and then the upper and lower bearings 21 and 21a. Fixed as a fixing bolt 22, the lower pin hole (25a) of the speeder (25) and the upper pin hole (26a) of the lower link (26) to be aligned with the lower pin (27), and then crank shaft (2) The lower link 26 and the connecting rod cap (6) to the crank pin (7) of the) is to be fastened as a connecting rod cap bolt (5).

Therefore, the relative position error of the angle between the piston 1 and the crankshaft 2, the vertical and horizontal relationship is not well matched automatically.

As shown in FIG. 3, the cylinder head 10 and the crankshaft 2, which are the basic skeletons of the internal combustion engine, are assembled and assembled, but the relative spacing between the four pistons 1 is not constant and the angle is also vertically horizontal. It shows the state that does not fit well, by using the ball joint connecting rod 20, the abnormal interval of the cylinder head 10, the abnormal position of the crank pin (7), the crank shaft (2) or the ball All accessories are smoothly and automatically compensated for any incorrect relative position that may occur inside the internal combustion engine, such as the torsion of the joint connecting rod 20 or the abnormal angle of the crank pin 7 or the abnormal bearing of the main bearing journal. It can move.

Therefore, the gap between the inner diameter of the cylinder 11 and the outer diameter of the piston 1 can be minimized, so that noise and vibration caused by the collision of the piston 1 with the wall surface of the cylinder 11 can be minimized. By minimizing the spacing between the pistons 1 of the cylinder 11, even if the pressure of the piston rings is sufficiently reduced, fuel leakage due to friction of the piston rings can be reduced because fuel leakage and penetration of engine oil into the combustion chamber can be minimized. In addition, minimizing the pressure of the piston ring not only minimizes the wear of the machine, but also minimizes the emission of pollution.

In addition, in the process of processing the inner diameter of the cylinder 11 in the cylinder head 10, it is freed from the problem that the center intervals of the four or more cylinders 11 must be extremely precisely finished, and the center side of the cylinder 11 and All costs are saved to maintain the straightness and squareness of the mutual position of the crankshaft (2), without allowing a gap between the connecting rod (20) and the piston (1) on the piston pin (9), Because it is extremely accessible, noise and fuel waste caused by sliding friction are completely eliminated.

Significantly, the necessity of mutual parallelism between the crank-pins (7) and the main bearing journal (main-bearing-journal) and the need for accurate spacing to be observed during the processing of the crankshaft (2) are remarkable. In order to reduce the production rate of the crankshaft (2), because only the diameter of the crank pin (7) and the diameter of the main bearing journal can be precisely processed to produce a pass product.

4 degrees shows the maximum load of the crankshaft (2) because the two main bearings at both ends of the five main bearings can be converted into needle-roller-bearing instead of the two-to-two coupling as in the present. It is replaced by rolling bearings rather than sliding friction, which saves fuel, reduces noise, and improves machine level.

Furthermore, the impact, noise and smoke caused by the deformation of the connecting rod due to the deformation of the cylinder block due to the change of tension of the bolt tightened when the cylinder head is mounted and the aging of the gasket, It is a revolutionary invention that there is no fuel waste.

In addition, the present invention is naturally within the same category even if the universal joint connecting rod is used to change the rotational motion of the rotating crankshaft into linear motion or to convert the linear motion of the piston into rotational motion.

Claims (2)

The spherical body 24, which is slipped in the groove 23 of the upper and lower bearings 21 and 21a, which is fixed to the piston 1 of the cylinder head 10 with the fixing bolt 22, is used as the fixing bolt 22a. (Spider) (25) and the lower pin hole (25a) of the speeder (25) is matched with the upper pin hole (24a) of the lower link (Lower-Link) 26 Lower pin (Lower-pin) (25) Ball joint connecting rod (Bal1-Joint-Connecting-Rod) (20) configured to build up the; The lower link 26 of the ball joint connecting rod 20 and the connecting rod cap 6 are inserted into the crank pin 7 of the crank shaft 2 and the connecting rod cap bolts 5 are fastened to the piston 1. Ball joint connecting rod of a reciprocating internal combustion engine, characterized by automatically compensating for the relative positional error between the crankshaft and The spherical body 24 which slips in the groove 23 of the upper and lower bearings 21 and 21a fixed to the piston 1 in the cylinder 11 by the fixing bolt 22 is used as the fixing bolt 22a. It is fixed to the spider (25) and the lower pin hole (25a) of the speeder (Spider) 25 coincides with the upper pin hole (26a) of the lower-link (Lower-Link) 26, the lower pin (Lower-Pin) ( A ball joint connecting rod (20) configured to be arranged in a row; The piston (1) by fastening the lower link (26) of the ball joint connecting rod (20) and the connecting rod cap (6) to the crank pin (7) of the crank shaft (2) by connecting rod cap bolts (5). Ball joint type connecting rod of a reciprocating pump, characterized in that to compensate automatically the relative position error between the crankshaft (2).