Method and instrument for maintenance of split plain bearing assembly and rotary machine wherein it is used

FIELD: machine engineering.

SUBSTANCE: instrument for turning the parts of a bearing assembly lining comprises a lining divided into at least two parts. The instrument comprises a device designed to affect one of the at least two mentioned parts of the lining and rotate all parts of the bearing assembly liner.

EFFECT: maintenance of the lining parts is provided without disassembling the machine or its parts.

9 cl, 22 dwg

 



 

Same patents:

FIELD: machine building.

SUBSTANCE: metal cap (1) comprises an arched section (2) forming the bearing surface, left and right flange sections (3) which are placed and connected with the opposite ends of the arched section (2), bush sections (4) placed so that to rest on the back surfaces of the left and right flange sections (3) and through which assembling bolts are inserted, and a recess (12) formed between the two bushes (10). Each of the bush sections (4) is formed with a recess (12) and includes two holes (11) for a bolt passing through each of the flange sections (3), and two bushes (10) embracing the holes (11) for the bolt. The bushes (10) are interconnected by a rib (13) placed so that to be able of crossing the recess (12) between the bushes (10) on the front end face side.

EFFECT: provision of a cap that shall be cast inside a light-metal element as a frame and that provides for the reduction of bearing surface deformation and is suitable for improving the connection with the light-metal element.

4 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: method involves measurement of diameters of primary supports of case, main journals of crankshaft, their misalignment values, thickness of upper and lower inserts, sorting of parts as per dimensional groups, selection of sets of parts in a batch by simulating the assembly considering all the measurement parameters and calculation of total completing error. At that, inserts are chosen as to their thickness by calculating "working" gaps in the zone of their maximum approximation under load, considering the measurement parameters of each primary support and similar main journal. Parts are sorted, and at the same time, accuracy of radial gap is calculated by comparing it to allowable limit values of radial gaps and by choosing the measured dimensions of contact surface of completing parts, which are the closest as to the value. Simulation is performed by using geometrical plane model of mounting assembly and performing mathematical simulation and computer-aided selection of the required combination of sizes of thicknesses of upper and lower inserts of secondary journals. Then, the required thicknesses of inserts are chosen by deducting from "working gap" value the corresponding values of limit values of radial gaps in each similar pair of main bearing-main journal of crankshaft, by using the data of actual measured sizes of diameters of holes of primary support of diesel engine casing, main journals of crankshaft, thicknesses of upper and lower inserts of main sliding bearings using combinatory relationship of design radial gap.

EFFECT: improving the accuracy of radial gaps and efficiency of assembly process due to automation of completing process of multi-support bearing assembly.

6 dwg, 3 tbl

FIELD: machine building.

SUBSTANCE: unit of transmission mechanism, particularly, of internal combustion engine, consists of shaft (1) and of at least another one part (2, 3); also, shaft has bearing journals for installation in corresponding bearing orifices made in said part (2, 3). Surface of a bearing journal is equipped with antifriction coating; also, surface of a corresponding bearing orifice directly contacts this anti-friction coating. Anti-friction coating has a multi-layer structure. Here there is also claimed the shaft for the said unit of the transmission mechanism; the shaft can be a crank- or camshaft of the internal combustion engine.

EFFECT: simplified design of transmission mechanism unit; reduced weight and cost of units.

14 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: invention refers to bearing unit of crankshaft of internal combustion engine. The bearing unit consists of bearing (10) mounted on crankshaft (16) of the internal combustion engine, of seat (11, 15) of the bearing designed for placement of bearing (10) and of system (20) of packing designed for sealing relative to crankshaft (16) and seat (11, 15) of the bearing. At least one part of seat (11) of the bearing has a reinforcing element (12) positioned in the seat of the bearing. Also, surface (13) of at least one part of seat (11) of the bearing adjoining bearing (10) is made out of plastic. There are also claimed the internal combustion engine comprising the said bearing unit and a hand tool with a mechanical drive containing the said internal combustion engine.

EFFECT: improved bearing unit of crankshaft due to bearing unit sealing and optimal installation of bearing and/or bushing of bearing in seat of bearing with decreased allowances, which prevents bearing and/or bushing of bearing rotation in bearing seat; minimised hazard of bearing distortion and bearing and/or bushing of bearing compression in bearing seat under force causing finite destruction of bearing and/or bushing of bearing.

13 cl, 4 dwg

Sliding bearing // 2398141

FIELD: machine building.

SUBSTANCE: sliding bearing consists of half-round upper insertion and half-round lower insertion separated one from another. The upper insertion consists of the first oil-conducting channel for supply of lubricating material (motor oil) from outside into a gap between the bearing and a shaft and the second oil-conducting channel facilitating flow of oil in a circular direction of the bearing. The first channel includes an opening in internal circumference opened into internal circumference of the upper insertion. The upper insertion includes a part without an internal recess without a channel on a back side relative to the opening in internal circumference in the direction of shaft rotation. An auxiliary oil-conducting channel for oil release from the second channel is made in at least one of lower insertions and in a zone on the next side of the opening in circumference in the direction of rotation. The second channel runs to a front side in the direction of shaft rotation from the opening in internal circumference to the auxiliary channel. In the second version the upper insertion of the bearing included a front end part on the front side relative to the opening, while the lower insertion includes the back end part corresponding to the front part. The auxiliary channel is formed with channels of an unloading recess and a face made on the internal circular side of at least one of the front parts of the upper insertions and the back part of the lower insertion. Oil consumption of the face channel is bigger, than oil consumption of material in the channel of the unloading recess. Also there is claimed the facility of torque transfer and the engine containing the sliding bearing.

EFFECT: sliding bearing with decreased amount of lubricating material coming out of oil gap preventing damages caused with foreign impurities.

14 cl, 48 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention refers to automobile engineering, to river craft and marine. The bearing for an internal combustion engine with reciprocal motion of a crank mechanism consists of a separator, rollers and of internal and external rings. Also the separator is connected to the housing of the engine by means of threaded connection wherein wear of the separator, rollers and internal and external rings can be regulated.

EFFECT: increased service life of engine.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention is related to intermediate bearings of engines and more precisely to devices and methods for installation of intermediate bearing on crankshaft. Method consists in the fact that intermediate bearing (162) is placed on central hub (160), and further intermediate bearing (162) is pressed between central hub (160) of crankshaft and central partition (116, 118) of engine tray. To install intermediate bearing (162) in tray (110) of engine and to connect it to central partition (116, 118), device is used, which represents tool (200) comprising two halves (210, 230).

EFFECT: creation of simplified method for installation of intermediate bearing, in which: number of elements required for installation is reduced, installation flexibility and adaptability are provided.

44 cl, 5 dwg

The invention relates to mechanical engineering, in particular for the bearing slides, and can be used in friction units operating in distortions

The invention relates to bearings

FIELD: machine building.

SUBSTANCE: proposed tool comprises compression-vacuum percussion mechanism barrel arranged in plain bearing, and sealing bush. Sealing bush is locked against slipping and twisting and coupled with plain bearing to inhibit bearing slipping.

EFFECT: compact design, higher efficiency.

11 cl, 2 dwg

Bearing assembly // 2439387

FIELD: machine building.

SUBSTANCE: bearing assembly includes body (4), bearing (1) and washers (2) enveloping it with middle part. Washers (2) are made so that they envelope outer bearing race (1). At that, washers represent cylindrical segments with edges (3) and flat eyes. Eyes of adjacent washers (2), which are located in pairs, are rigidly attached to each other and installed in body (4). Eyes are fixed with hold-down washers (5) with screws (6) against axial offset of bearing (1) relative to body (1).

EFFECT: reducing working hours of maintenance of bearing assembly at operation by reducing friction losses in the assembly.

2 dwg

FIELD: machine building.

SUBSTANCE: support structure (1) for crank shaft (6) consists of lower section (2) of cylinder block (19) and bearing cover (3). Bearing cover (3) is located under lower section (2) of the block and has grooves (15, 16) for relaxation of stresses. Grooves (15, 16) are made in upper sections of opposite sides (3c, 3b) of bearing cover (3). Grooves (15, 16) pass along axis of the crank shaft and are open of opposite side surfaces of the bearing cover. Projecting ends (11, 12) are made in upper sections of the bearing cover by forming grooves (15, 16). Ends (11, 12) are flexibly bent under load to the bearing cover at rotation of the crank shaft. In the invention there is also disclosed support structure (1) for crank shaft (6), whereat in upper sections of opposite sides (3c, 3b) of bearing cover there are made lugs (17, 18). Lugs (17, 18) pass along axis of the crank shaft and project from surface of the cover in the direction from crank shaft (6). The lugs have upper surface (48), remote surface (49) and lower surface (50). Upper surface (48) contacts lower section of the cylinder block (2). Lower surface (50) has inclined surface (39) and arc-shaped surface (41).

EFFECT: support structure of crank shaft preventing cracks in lower section of cylinder block.

8 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: unit of play-free friction bearing consists of friction bearing with specified torsion moment. The friction bearing consists of case (1) of bearing and of bush (2) of bearing inserted into case (1) of bearing. Also, bush (2) of bearing and case (1) of bearing are open along lengthwise axis. Shaft (3) of the friction bearing conjugates with bush (2) in the bearing. Shaft (3) is tightly set into bearing bush (2); both bearing case (1) and bearing bush (2) can expand. Claimed unit of play-free friction bearing is implemented in motor car.

EFFECT: unit of play-free friction bearing operating under changed conditions during whole service life with torsion moment of specified value.

26 cl, 4 dwg

Bearing // 2193704
The invention relates to equipment used in the mill, providing a grinding materials natural shelf

The bearing housing // 2192570
The invention relates to equipment used in the mill, providing a grinding materials natural shelf

Hinge support // 2132979
The invention relates to mechanical engineering and can be used as a pivot in the General-purpose mechanisms, as well as a swivel bearing in the best-effort mechanisms sosnowcu Seating surfaces for bearings

Bearing support // 2007635

Bearing support // 2003864

Bearing support // 2000497

Hydraulic puller // 2130377
The invention relates to disassembly and Assembly devices
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