SU261827A1 - STOPPING STRUCTURE OF HEAVY-LOADED THREADED CONNECTIONS - Google Patents

Description

one

The invention relates to devices preventing self-locking of threaded joints operating under vibration loading conditions, in particular, pressure screws of blooming and plate mills.

In the line of the pressure device, blooming and thick-walled mills, even after the presence of self-braking screws and a spherical hub, in the ingot capture period due to vibration, self-braking is not provided. The lack of self-braking reduces the dimensional accuracy of the rolled ingot, causes an increase in the number of shrolusks, eliminates the operation of the mill in automatic mode, i.e., reduces ultimately the productivity of the mill.

Designs of pressure devices are known in which electric brakes are applied to provide self-locking. However, the practice of operating the brakes showed that in the push-pull ycTpoficTiBa line of the reversing mill, which works with a large number of inclusions per hour, it is an application that is not effective. Installing an additional globoid gearbox with electric drive also does not give the desired affect.

The conical split ring pressed by the tensioning bolts is very complex in design, requires use of the drive, is inevitably associated with thread deformation and high forces and frequent switching-on are practically inoperable, which limits their use. ani

The design of the locking device eliminates self-unscrewing in the line

pressure m-mechanism crimping stano-in. This is achieved by the fact that the pressure screw and the nut are rigidly connected in the transverse direction relative to the axis of the aara, for example, pressure. To this end, special nuts are attached to the end of the nut.

headgear, which eliminates the relative displacement in the pair in the radial direction and thus with, the loss, do not prevent the axial movement of the screw. Eliminating the phenomenon of dedication allows

get metal savings on blooming and plate mills, automate the process and thereby increase mill productivity. In order to increase the reliability of the staples and reduce the labor intensity of manufacturing, the retainer is taken out - in the form of a cutting element covering the screw on the outer diameter of the thread and gripping it, and the split element is in the form of a ring with a Conical outer surface. The compression device is a disk and a nut rigidly connected with a nut with a tapered inner surface. The described device is shown in FIG. 1, 2, illustrating two types of design of the proposed device. FIG. I shows a general view of the proposed device, in which the smooth split rings 1, which are moved in the axial direction by the pressure disk 2 and the bolts 3 in the conical sleeve 4, fastened with bolts 5 on the nut 6 and pressed to screw 7. When moving in the axial direction, the ring is set in a position whereby the gap between it and the screw is zero. In this case, when transverse, relative to the axis of the lara, vibrations, relative displacements in the pair are absent, which corresponds to the static conditions of operation of the screw pair when the self-braking condition is fulfilled. FIG. 2 shows a general one (a type of device in which the cutting element 8 is designed in the form of inserts attached to the nut 6 by bolts 9 and moved by the wedges 10, which clamp them on the 1K screw 7. The wedge is supported on the guides. 11 fixed to The machine frame is parallel to the axis of the screw. The stopping of the wedges is made in one of the known ways. Thus, the proposed device, eliminating dedication, does not prevent the screw from moving axially, i.e., the handling of the roll process. common device t yellowing Threaded connections, alternating to an alternating load, for example, pressure mechanisms of blooming and mills, containing a screw, mainly with a tape thread, a nut and a retainer, characterized in that, with a slit, increasing the reliability of rotation and reduction of labor-intensive manufacturing, as encompassing SCREW: According to the outer diameter of the thread of the cutting element and the device compressing it. 2. The adjustment is in accordance with claim 1, characterized in that the cutting element is designed as a ring with a smooth cylindrical I1M hole it, whose diameter in the free state larger than the outer diameter .Some screw thread and with a conical outer surface and compressive .prisposoblenie designed as dioka and rigidly associated with the sleeve nut koniches.koy with the inner surface corresponding to the conical surface of the ring. 3. Device 1P. 1, characterized in that the cutting element is made in the form of, for example, two inserts with a cylindrical smooth bore, and a compressing device in the form of wedges that interact with guide rails fixed on the frame parallel to the screw axis and with slides.

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