SU1249213A1 - Rapid-action nut - Google Patents

Description

112

The invention relates to mechanical engineering, in particular to fasteners operating under vibration, alternating and pulsating loads,

The aim of the invention is to increase reliability and ease of operation.

FIG. 1 shows a nut, a general view of FIG. 2 shows section A-A in FIG. one; in fig. 3 is a section BB in FIG.

The quick-release nut comprises a housing 1 with a tapered bore and a detachable threaded sleeve 2 installed in it, consisting of halves 3 and 4, which are kept from being moved by pins 5.

The slots of the halves 3 and 4 are provided with grooves 6, in which the plate springs 7 are installed. On the threaded part of the sleeve 2, the grooves 8 along the entire length are made in the slot, reducing the amount of radial movement of the halves 3 and 4 when the screw thread 9 opens.

The quick-release nut is provided with a locking mechanism, containing two figured pins 10 with projections 11, on which a thread 12 is threaded, a screw 9 mating with a thread, containing springs 13 placed in the grooves 14 of the threaded bushing 2, and pushers 15 that enter one the end of the grooves 16 keys 10.

The yoke 17 is located on the housing 1 and has an annular groove 18, into which the second pusher 15 enters, holding the yoke from moving, but allowing it to rotate freely around an axis. For assembling the cage with the body, it is provided with two grooves 19, covered with screws 20, and the cage is provided with cams 21 arranged at a 90 ° angle relative to the grooves 19.

The nut works as follows, the Nut is taken by the body 1 and moved to the thread of the screw 9 until the end of the body 1 is in contact with the clamping point.

In this case, the springs 7 are compressed, the halves 3 and 4 of the threaded sleeve 2 are closed by simultaneous movement in the axial and radial directions of their threaded part into engagement (; screw of the screw 9.

3 1

When the halves 3 and 4 of the threaded sleeve 2 are fully closed, turn the nut with your hand in the direction of screwing. At the same time, a force arises from the manually created torque in the threaded joint, the axial component of which creates a stress for the joints and is directed against the axial component of the force generated by the spring 7. In magnitude, it is much larger, since the angle of the thread turn is much smaller than the angle cone bore housing 1.

The final tightening of the nut is performed with a wrench, and the more the nut is tightened, the tighter and tighter the joints will be and the more threaded bushing 2 will be this axial component retracted into the conical hole of the housing 1, resting against the thread of the screw 9,

The fixing nut on the screw 9 is achieved by turning the yoke 17 clockwise. At the same time, the cams 21 press the pushers 15, which compress the springs 13, and move the keys 10, pressing them to the screw 9.

When screwing the nuts proceed as follows.

The yoke 17 is rotated counterclockwise, the cams 21 guide the pushers 15, the springs 13 move the keys 10 from the center of the pushers against the outer annular surface of the groove 18, and the keys 10 move by a value greater than the thread profile.

The halves 3 and 4 of the threaded sleeve 2 are displaced in the radial direction by the action of the springs 7 and, pushing away from the supporting surface of the conical bore of the housing 1, are displaced to the right up to the stop by the ends of the grooves

16c pushers 15. This sleeve 2 is disengaged from the screw thread 9.

If it is necessary to disassemble the fast-acting nut, the screws 20 are unscrewed for cleaning, the holder 17 is turned and, orienting the grooves 19 against the pushers 15, remove the holder

17c of the housing 1, take out the pushers 15, releasing the keys 10, and take out the threaded sleeve 2 from the conical opening of the housing 1. The assembly is carried out in the reverse order.

21

/ 7

rs

go

eight

7521

FIG. 2

6-6

Editor A.Vorovich

Compiled by D. Orlov

Tehred I. According to Po in ifM, Proofreader E. Sirohman

Order 4214/34 Draw 777 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

fig.Z

Claims (1)

A QUICK NUT containing a housing with a detachable threaded sleeve installed in its conical hole, the parts of which are spring-loaded in the radial direction, characterized in that, in order to increase reliability and ease of use, it is equipped with a rotary holder with cams mounted on the housing, the threaded sleeve is made diametrically located grooves and is equipped with dowels and pushers located in the latter, spring-loaded in the radial direction, connected with dowels with the possibility of interaction with casing clamps, g1 on one facing the other surfaces of the spring keys, a thread is made similar to the thread of the threaded sleeve. fig1