Device to press piston pins in and out

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production and can be used in repair of internal combustion engine piston-connecting rod assemblies both in stationary conditions and in the field. The device incorporates a screw representing a threaded rod furnished with a handle and a guide. The rod is provided with a collar furnished with annular marks arranged perpendicular to the rod axis of rotation, a reference mark arranged parallel to the aforesaid axis, a dial scale furnished with marks arranged parallel to the axis of rotation. The said handle serves, also, to lock the dial scale. The guide represents a sleeve. To add to ease of use, the device can incorporate a brace or a bow.

EFFECT: higher pressing in quality.

2 cl, 2 dwg

 

The invention relates to engine and can be used in the repair of connecting rod and piston of internal combustion engines, both stationary and in the field.

A device for fitting and removing the piston pin, containing a screw, made in the form of rod, threaded and handle, and a guide (book Healin Reference wizard to repair and installation of stationary diesel engines, Moscow, motor cycle", 1963, pp.182, 59, Fig.8).

A disadvantage of the known device is that due to an unfortunate exposure of the dimensions between the end surfaces of the piston pin and groove retaining rings bosses sometimes have to repeat the operation of removing and fitting, reducing the quality of the latter.

The present invention is to improve the quality of the crimp.

The problem is solved in that the device for fitting and removing, containing a screw, made in the form of rod, threaded and handle, and a guide rod provided with a flange with ring marks, arranged perpendicular to the axis of rotation, the label reference is parallel to the axis of rotation, limb, performed with labels arranged parallel to the axis of rotation, and the handle performs the function locknuts limb, this guide is made in the form of wut the key.

In addition, to improve the usability of the device can be entered heatproof, performing also the function Taganka.

The invention is illustrated by drawings,

which figure 1 shows a General view of the device;

figure 2 is a top view of the piston is covered by the tongs.

Device for fitting and removing contains screw, made in the form of rod 1, threaded 2 and handle 3, guide 4, made in the form of a sleeve. To limit the depth of the pressing piston pin 5 rod provided with a flange 6 with ring marks 7 (ten-twelve marks)arranged perpendicular to the axis of rotation (distance between marks, for example, 1 mm and corresponds to the thread pitch 2 of the rod 1), and tag 8 count that is parallel to the axis of rotation and intersecting the circular marks (7), the limb 9, made with labels 10 arranged parallel to the axis of rotation (tags may be, for example, ten, the interval between markers is 0.1 from 360°, ie 36°).

When turning the limb 9 of the same label 10 to the other offset stem is 0.1 mm, while turning the limb from the zero marks to the zero offset stem is 1 mm.

For convenience in the work, i.e. to hold the piston 12 during its heating and pressing his finger into the device, put the tongs 13, performs, if necessary, and the function Taganka.

Work is my device is as follows.

The owner of such device, previously covering the piston 12 tongs 13, puts it on the ground and heats. For example, in the field, the piston can be heated with burning gasoline poured on him or canning jar, set under it. While the piston is heated to the required temperature to prepare the stem 1, namely assign the limb 9 of the end face of the flange 6 to the required size to the appropriate size from the end of the outer boss 14 to the inner edge of the groove 15 retaining ring (not shown), and guided circular marks 7 of the flange 6 with the mark 8 count and label 10 of the limb 9, ) it from turning handle 3.

Then put the finger 5, intended for fitting in the piston 12, the piston rod 1 is fully inserted in the flange 6 and is consistently in the guide 4 of the sleeve. As heating of the piston 12 with the inserted cylinder 16 of the connecting rod 1 with the "stuffing" freely inserted up to the stop end surface of the limb 9 in the end surface of the boss and do not disturb until cool the piston. The pressing operation is completed.

Vipresume produced as follows. During heating of the piston to a certain temperature, the rod 1 with the "stuffing" freely inserted into the opening end part of the former in use (BU) finger until it stops with the last guide 4 sleeve and pederiva one hand on the leg of the tongs 13, with easy nagamangalam finger this guide 4 stores the location of the head 16 of the rod, thereby providing a free entry next new piston pin which, when the stop flange 6 in the end surface of the boss 14 rises between the inner edges of the grooves 15 retaining rings with a certain accuracy to ±0,1 mm Heatproof sakasajinei, i.e. can be performed, for example, from spring steel.

The device eliminates the re-operation of removing and fitting the piston pin and improves the quality of the pressing and performance.

1. Device for mounting and removing the piston pin containing a screw, made in the form of rod, threaded and handle, and a guide, wherein the rod is provided with a flange with ring marks, arranged perpendicular to the axis of rotation, the label reference is parallel to the axis of rotation, limb, performed with labels arranged parallel to the axis of rotation, and the handle performs the function locknuts limb, this guide is made in the form of a sleeve.

2. The device according to claim 1, characterized in that it introduced the tongs, and performing the function Taganka.



 

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