SU63162A1 - Device for folding the head from the cylinder liner of internal combustion engines - Google Patents

Description

When assembling the cylinder head and cylinder liner of internal combustion engines that are connected to the thread, there are cases of a loose connection that gives a leak during hydraulic testing. In this case, one has to cut the sleeve from the head or, on the contrary, cut the head from the cylinder sleeve, as a result of which a marriage is obtained, leading to the need to manufacture individual sleeves for the heads from which they were cut.

The present invention aims to eliminate the possibility of damage to the heads or sleeves when they are disconnected in the event of a loose connection and by the known method of unscrewing the heated head from the cooled sleeve, and the cylinder is preheated in the furnace.

New in the present invention is the application to separate the cavity of the head from the cavity of the cylinder of a disk that is inserted into the cylinder. Under the disk there is an annular tube supplying cooling water to the inner walls of the cylinder. Transmission to the head of forces in the axial direction is carried out using a ring connected to the source of the pneumatic cylinder.

In FIG. 1 shows the proposed device in a partial section; FIG. 2 - in section along A - A of FIG. 1, fig. 3- pneumatic pressure mechanism and adjustable guides (rollers for the head and Fig. 4 - roller shifting mechanism.

A tripod made of squares carries a cast ring 1, in which the cylinder liner of a certain diameter is inserted into the precisely bored hole of which with a skirt. The plates 2 and the bolts 3 attach the cylinder to the flange to ring 1. Along the axis of the ring 1, the column 4 is fixed with screws, inside of which is rod 5. held from rotation by key 6. A disk 7 with a diameter slightly smaller than the diameter of the cylinder is attached to the upper end of the rack 4; and finally the rod 5 on the thread is screwed and clamped with a screw. disk 8, pressed up by spring 9. Nut 10 screwed on the lower cut end of rod 5 can bring the upper disk 8 closer to the lower disk 7, as a result of which the spring split ring 11 is wound with asbestos cord It is tightly pressed against the wall of the sleeve at the place of connection. Head and sleeve, isolating the head of the sleeve from the cavity of the sleeve.

Three tubes pass through the base of the ring 1, of which tube 12 reaches the discs and has a ring at the end with a large number of small holes on the outer surface; Through these openings, a large number of streams of water splash onto the hot walls of the liner at the point where the liner is connected to the head, cool the liner, but do not affect the temperature of rOvioBKH. The resulting steam can: go through the tube 13, and non-flowing, rivsh with water will flow through the tube 14, ending at the base of the ring 1.

When the liner and the head are prepared for unscrewing, under the head of the booster tube, there are T | ri rollers 15 (Fig. 3), sitting on the axles 16 on the ball bearings. The axis 16 is located in the grooves of the ring 17, partially cut from above and closed by a ring 18; the latter has three oblique grooves 19 (fig. 4) in which the pins 20 are mounted, fixed in axles 16. When turning the handle 21 of the ring 18, due to the oblique grooves of the axis 16 with the rollers 15, they approach or move away from the axis of the cylinder and depending on the direction of rotation, they can be accurately guided under the head flange.

Three cups 22 are welded to the ring 17, into which three bars 23 are screwed, guided by sleeves pressed into ring 1. The lower ends of bar 23 are connected to the plate 25, to which the force of the piston 26 of the piston 27 of the air cylinder 28 transmits. mounted on slab 29 reinforced on a concrete foundation. A tripod according to FIG. 1-2The cylinder with the assembled head is heated in an oven at 320 for 35-40 minutes. and then install it and fasten it to ring 1 as described above. Nut 10. Insulate the ring 11 and isolate the cavity of the head from the cavity of the sleeve. Cold water is admitted through pipe 12, as a result of which the sleeve quickly becomes cold. The handle 21 brings the rollers 15 under the flank of the head and injects air into the air cylinder, transmitting it to the head

cylinder effort, directed vertically upwards. Put the key on the head and begin to screw it with the sleeve. Due to the cooling of the thread on the sleeve and its high temperature on the head: the thread will significantly loosen. The pressure upward from the air cylinder further makes it easier to roll the head from the sleeve rolling over the rollers.

Subject invention

Claims (5)

1. A device for coiling the head from the cylinder liner of internal combustion engines while maintaining the head in a heated state and simultaneously cooling the cylinder from the inside, characterized by using a disc inserted into the cylinder to separate the head cavity from the cylinder cavity, under which the annular tube is located supplying cooling water the inner walls of the liner, and for transmitting forces to the head in the axial direction, a ring interacting with the head and connected to the rod of the pneumatic cylinder is intended. 2. The form of the device according to claim 1, characterized in that the disk separating the cavity of the head from the cavity of the sleeve is made of two plates, between which a sealing ring is located along the periphery. 3. The form of the device according to Claims 1 and 2, characterized in that one of the disc plates is spring-loaded and connected to the thread with a thread at the free end. 4. The form of the device according to claim 1, characterized in that the ring connected to the pneumatic cylinder stem and acting on the head is provided with rollers that are adjustable in the radial direction. 5. In the device according to claim 4, use for the radial movement of the axles carrying the rollers of the second rotary disk, provided with curved cuts, interacting with the protrusions on the axes of the rollers. FIG. one Ujw X aoO, g V.  .- /. h: .y i FIG. 2 about 1 ;; - y -; -t- / F “g. four g;