SU872841A1 - Friction safety coupling - Google Patents

Description

(54) FRICTION PROTECTION COUPLING

I

This invention relates to mechanical engineering and is intended to limit the transmitted steep MOMeffTa.

Known safety clutch, containing a leading disk, a drum, driven in it friction and pressure disks, and squeezing elements in the form of springs ПЬ

The disadvantage of this coupling is the high accuracy of the parts manufacturing, which is necessary when assembling the coupling. In addition, the springs compressing the driven discs 6 are flat and mounted in the α-radial directions. When the clutch operates, the drive and pressure disks turn one relative to the other and twist the springs, which is negative. (But it affects the accuracy of the clutch operation.

Closest to the proposed technical essence and the achieved effect is a friction safety clutch containing a leading coupling half, a housing mounted in a non-driven and pressure discs, and squeezing elements in the form of a carriage, a slider, a pusher, fixed at one end to a lead, her

half coupling and others on the pressure plate 2.

The disadvantage of this coupling is. the complexity of assembling and mounting the squeezing device is due to the large number of parts that make up this node (carriage, pusher, slider, rusk, springs), which requires high ACCURACY of manufacturing these parts and high qualifications in the manufacture and assembly.

The purpose of the invention is to simplify the manufacturing and installation technology. ten

This goal is achieved by the fact that a friction safety clutch, comprising a housing, mounted in it a leading, driven and push-down disks, as well as squeezing elements, is provided with a threaded bushing installed in the housing, squeezing elements made in the form of torsons, each of which is fixed at one end on the master disk, and on the other one on the pressure disk, while the driving disk 20 is connected to the threaded bushing.

Claims (2)

FIG. I shows the clutch, a general view; in fig. 2 - section A-A n & FIG. one; on fng. 3 is a section BB in FIG. 1. The clutch contains a drive shaft 1 mounted on it by means of a spline connection a drive disk 2, a driven shaft 3 and a housing 4. A pressure disk 5 is installed in the slots 6 of the housing 4 and presses the driven friction disks 7. Torsion 8 is fixed at one end on the drive disk 2, with another, on the pressure disk 5. The threaded sleeve 9 is installed in the housing 4 and the clamps 10, made in the form of balls, is connected with the drive disk 2 with the possibility of rotation. Threaded sleeve 9 stopper nut P. The coupling works as follows. Due to the initial deformation of the torsion 8 by moving the threaded sleeve 9, the initial compression of the driven friction discs 7 is established. a circumferential force rotates the drive disk 2 relative to the pressure disk 5. The torsions 8 are deformed and the disks 2 and 5 approach each other. But since the drive disk 2 does not have the possibility of axial movement, the pressure disk 5 moves along the grooves 6 in the housing 4. At the same time, the compression force of the friction slave disks 7 decreases. Thus, as the clutch moment increases, the force compressing the friction discs decreases, and when the limit point is reached, the discs 7 slip. This coupling has a simple design and manufacturing technology. Claims of the invention Friction safety clutch, comprising a housing, mounted therein a leading, driven and pressure discs, as well as wringing elements, characterized in that, in order to simplify the manufacturing and installation technology, it is equipped with a threaded bushing installed in the housing in the form of torschons, each of which is fixed at one end on the master disk and the other on the pressure disk, with the drive disk being connected to the threaded sleeve. Sources of information taken into account during the examination 1. USSR author's certificate No. 488030, cl. F 16 D 7/02, 1973. 2. Authors. USSR certificate № 693068, cl. F 16 D 43/20, 1976.