SU1016580A1 - Hinged joint reversible plain bearing - Google Patents

Description

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Od 01

00 The invention relates to articulated assemblies, preferably reversible friction, for example, fifth wheel coupling mechanisms of transport machines. A sliding bearing is known, comprising a housing, a shaft with a bicylinro-conical surface and conical sleeves of antifriction material with two working surfaces, as well as a bearing adjustment unit. A disadvantage of the well-known undershirt is the inconvenience of replacing worn bushings, the complexity of the adjustment adjustment and the instability of work under conditions of reversible friction. The closest in technical essence to the present invention is a bearing including a housing. A sleeve mounted on the shaft and a floating sleeve placed between them, the floating bushing being cylindrical and eccentric in its working position with respect to the axis of rotation of the shaft. The advantage of this bearing is increased reliability of operation, as well as applicability in conditions of the swinging movement supports C 2}. The disadvantage of the bearing is the worst centering of the shaft and the increased wear of the outer working surface of the sleeve under shock loads. The purpose of the invention is to increase the durability of the working surfaces of the sleeve and the accuracy of shaft centering. The goal is achieved by the fact that in a reverse sliding bearing of a hinge assembly, comprising a housing, rings secured to the shaft by means of a spline joint, and floating sleeves arranged between the housing and the rings, the rings are eccentric and, with the sleeves mounted on them, are assembled in sets of three pairs of axles symmetry of rings 6 of which are rotated by 120 °. The outer diameter of the floating washers is less than the diameter of the body opening by a double eccentricity. The rings are mounted on the shaft by means of a spline joint. Such an embodiment of the bearing ensures the replacement of the semi-liquid friction sliding training by rolling friction of the sleeves on the body. At the same time, the bearing wear of both sleeves and the bearing housing nest is sharply reduced and the durability of their contacting working surfaces increases accordingly. The indicated arrangement of rings and sleeves provides shaft support on the housing at three points of contact of the sleeves and housing as well . FIG. 1 shows a bearing, a general view; FIG. 2 shows section A-A in FIG. 1. The bearing consists of a housing 1 mounted on the shaft 2 by means of a ring joint of rings 3 and placed between the housing and the rings of the floating bushings 4. The housing 1 is part of a plug 5, on which the same bearing 6 is also installed, and in the middle part there is a shaft 2 is matched with an earring 7. An earring, - a fork, a shaft and bearings form a hinge assembly of the saddle coupling mechanism of a transport machine. Rings 3 have eccentricity. Equal B. The axes of symmetry of adjacent rings are rotated 120 ° relative to each other. On rings 3, bushings are freely installed, the outer diameter of each of which is smaller than the diameter of the housing opening by twice the eccentricity of E. and cylindrical sleeves fixed by means of nuts 8 and washers 9. The housing 1 case is reinforced with a steel hardened steel sleeve 10 pressed into it 10. The bearing works as follows: rshaet reciprocating motion. Together with the shaft 2, they make the same movement to the eccentric rings 3, which transfer the working load to the hardened sleeve 10 of the housing 1 through concentric sleeves that run around this sleeve. Thus, the composite sleeve of a set of eccentric rings and flat. The moving sleeves move in a circular direction with rolling friction on the surface of the sleeve 10. Replacing the sliding friction by rolling friction of the sleeve k on the housing nest 1 increases the durability of the outer surfaces of the rings 3 and p, and the working surface of the STYLISHED sleeve 10 in the housing nest. Contacting shaft 2 with housing 1 by means of three pairs of annular sleeve with axes of symmetry rotated on each other

{fig. 2), provides the necessary precision centering of the shaft 2.

Replacing wear antifriction sleeves do not represent

10165804

technological complexity that simplifies maintenance and. repair of the proposed bearing.

Phi2. g

Claims (3)

1. REVERSIBLE BEARING SLIDING BEARING, comprising a housing, ”mounted on the shaft of the ring and placed between the housing and’ FIG! floating sleeves, characterized in that, in order to increase the durability and accuracy of shaft alignment, the rings are eccentric and with the sleeves installed on them are assembled into sets of three pairs, the axis of symmetry of the rings in which are rotated by 120 °. 2. Bearing according to π. 1, which is characterized in that the outer diameter of the floating washers is less than the diameter of the housing opening by the amount of double eccentricity. 3. Bearing according to Claim. 1, l and m of sistent in that the ring mounted on the shaft means _with shlitse-> Vågå compound.