SU1295086A1 - Connecting link - Google Patents

Abstract

The invention relates to the field of general engineering, in particular to the structures of connecting: links of round-link chains. The invention of poses instills an increase in the reliability and load capacity of a link by creating prestress in it. Closing half bushings are connected by solid rings. At the ends of the C-shell and the inner surfaces of the semi-bushings, a thread is made allowing preloading. The latter increases the reliability of the connection with cyclic loads, 2 Il. (L of soo about 00 O5

Description

The invention relates to general engineering, in particular to the design of connecting links of circular link chains, and can be used in various branches of the national economy.

The purpose of the invention is to increase the reliability of operation and load capacity of the link by creating a prestress in it.

FIG. 1 shows a connecting link; in fig. 2 is a view A of FIG. one.

The connecting link consists of a C-shaped case 1, made of a round bar, connected to links 2 of the chain. At the end 3 of the housing 1, the thread is cut to the right, and at the end 4 - left. The locking element is designed in the form of two semi-sleeves 5, at the ends of which the right 6 and left 7 threads are cut, interacting with the threads of the ends 3 and 4 of the housing 1. Outside, the ends 8 and 9 of the semi-sleeves are covered with sleeves 10 fixed from axial displacement by a central outer annular protrusion 11 and spring split rings 12 located in annular grooves 1E, the depth of which is 0.5 diameter of the locking element. In the central part of the semi-sleeves 5, a through hole 14 is made, the axis 15 of which lies in the plane and connector of the semi-sleeves 5 perpendicular to their longitudinal axis 16. Instead of the hole 14 on the outer surface of the central annular protrusion of the semi-sleeves 5, a flat key or a hex can be removed (not shown).

When moving the ends 3 and 4 of the Casing 1 by the semi-sleeves 5, the sleeves 10 covered outside, the central outer annular protrusion 11, the spring-loaded split rings 12, the annular grooves 13 may be absent.

When assembled into the internal groove of the housing 1, the plant links link 2 chains. Then at the ends. 3 and 4 of the housing 1 wear spring-loaded split rings 12 tl of the bushings 10, which are pushed aside so that they do not prevent the semi-sleeves 5 from being slid over the slot of the housing 1 after the latter have been laid on the slot of the housing 1, their threads 6 and 7 interact with the threads 3 and 4, then the sleeves 10 move towards the end.

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t5

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thirty

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8 and 9 half-bushes 5 up to the stop in the central outer annular ledge

11and install split rings

12c annular grooves 13. Then a circular rod 15 is inserted into the hole .14 with an axis 15 perpendicular to the longitudinal axis 16 of the semi-sleeve 5 and, rotating it, either draws together the ends 3 and 4 of the housing 1 and simultaneously expands the half-sleeve 5 or retracts ends 3 and 4 of the housing 1

and compressing the half-sleeves 5. When moving the ends 3 and 4 of the housing 1, the half-sleeves 5 stretch and slightly diverge in the direction perpendicular to their plane of the connector, as pushing-apart s. spars occur, while this half-sleeve 5 is reliably covered by the sleeves 10. the latter may not be fixed against axial displacement by the central outer annular protrusion 11 and the spring split rings 12.

. Under the action of cyclic loads, the fatigue failures of the connecting links in the locking parts of the joint occur, since, due to the complex configuration, an increased concentration of stresses occurs in these parts. Therefore, to increase the fatigue strength of the connecting link, after it is assembled in half-sleeves 5, a pre-stress is created, by rotating the rod, the ends 3 and 4 of housing 1 are pushed apart. In this case, no special device is required to create a pre-stress in the closing parts of the connecting link.

As a result, at the ends of the case of the right and left threads, and at the ends of the semi-plugs of the respective threads, to interact with the threads of the ends, the load capacity of the connecting link is increased due to the formation of a closed contour.

Claims (1)

Invention Formula A connecting link containing a C-shaped body, a locking device of two half-sleeves and a spring-loaded split ring, characterized in that, in order to increase reliability by creating a pre-tension in the link, it is equipped with at least one sleeve, covering the two half-sleeves, at the ends A C-shaped body and in both half bushings are made connecting multidirectional thread, in the central part of the semi-sleeves outside an annular protrusion is made, and ohyaty- 5 a through hole dp is inserted; the inlet sleeve is located between the rotor. an annular protrusion of semi-bushings and a split spring ring, while in the plane of the connector the semi-bushings are perpendicular to their longitudinal axis 13 V  5 / G 5 7 figure 1 / 7 13 viewA Editor I.Gorn Compiled by E.Tokmakova Tehred V.Kadar Order 601/40 Circulation 812 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader A.T. sko