SU1216469A1 - Plain bearing of internal combustion engine - Google Patents

Description

one

The invention relates to mechanical engineering, in particular, to engine building, and can be used in branches of the national economy operating autotractor internal combustion engines (ICE).

The purpose of the invention is to increase the bearing life of the bearings by facilitating clearance adjustment.

Fig. 1 shows a sliding bearing, a partial section; Fig. 2 shows the individual elements of a gap control device, axonometrics.

The sliding bearing of an internal combustion engine comprises a crankcase 1, a lid 2 with inserts 3 installed in their beds and fastening bolts 4 of the fastener 2, between the planes 5-8 of the connector of these parts, the upper 9 and lower 10 plates are installed. In this case, for example, the bottom plate 10 has a recess in which an elastic element 11 is mounted, which is, for example, a pre-curved plate made of spring steel. Plates 9 and 10 and the resilient element 11 have holes 12-14 for the fastening bolt 4. Plates 9 and 10 are installed in the connector between the crankcase 1 and the lid 2 so that their outer surfaces and ends are in contact with the liners 3, ensuring between them and shaft 5 required clearance.

The device works as follows.

In the process of assembling a new or thoroughly repaired internal combustion engine, after installation of the insert 3 and installation of the shaft 15 in the crankcase 1, the top plate 9 is installed on the plane of the connector;

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11 and then the bottom plate U, after which the bearing cap 2 is installed with the second half of the liner 3 and the clamping bolts 4, which pass through the holes 12-14. Tightening bolts 4 are tightened with a torque wrench with a predetermined amount of tightening torque. After. . assembly in the bearing is set

10 diametral gap in the vertical plane, the value of which depends on the size of the shaft 15 and the input 3 and the gap between the plates 9 and 10.. The stiffness of the elastic element 11 is chosen such that, at this moment of tightening of the tightening bolts 4, the elastic element 11 holds the plates 9 and 10 and, consequently, the inserts 3 at a certain distance one from

20 different.

After a certain operating time of the internal combustion engine, the gap in the bearing increases due to wear of the liners 3, therefore

25 to reduce clearance. To do this, do not remove the fastener 2, tighten the clamping bolts 4 with such a tightening torque that provides compression elastically. Element 11, for example, until it is completely straightened and embedded in the recess of the bottom plate 10. In this case, the gap between the plates 9 and 10 and the ends of the inserts 3 is completely selected.

Reducing the gap in the sliding bearings during the operation of the internal combustion engine increases their life by reducing the wear rate.

The economic effect of an external invention is obtained by increasing the life of the ICE sliding bearings.

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35

40

VNIIPI

Circulation 777

Order 980/42 Subscription

.2

Branch Patent,

Uzhgorod, st. Project, 4

Claims (1)

INTERNAL COMBUSTION ENGINE SLIDING BEARING, comprising a housing and a cover with inserts, coupling bolts and a device for adjusting the clearance, characterized in that, in order to increase the life by facilitating the adjustment of the clearance, it is provided with two plates and an elastic element, a recess is made on one of the plates and the elastic element is located between the plates in the specified recess, while the plates are installed with the possibility of contact of their outer surfaces and ends with inserts.