SU767430A1 - Protective compensation clutch - Google Patents

Description

-.,. The invention relates to the field of mechanical engineering.,. . Known safety clutch, containing the driven coupling half with collet lobes, interacting with the splined grooves of the leading coupling half 1. The disadvantage of this coupling is the wear of the mating elements, the sensitivity to misalignment and misalignment of the shafts. A known safety compensating coupling, comprising a leading coupling half with a collar having an undercut on the sides, a slotted groove, and a half coupling with collet lobes set at an angle to the rotation axis of the coupling, covering the expansion element and made with the bent ends of the subsets of the flooring patterns. moment to undercut collar {2. This coupling is closest to the invention in its technical essence and to the effect achieved. However, the known coupling due to the presence of the spacer element and the constant stiffness of the lepesj has a low reliability, a short service life and a complex structure, which complicates the assembly and disassembly of the coupling. In order to increase service life, reliability and operating conditions, in the proposed coupling, the petals of the collet are made of variable thickness, decreasing towards the folded ends of the petals. FIG. 1 shows a coupling, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 — node 1 in FIG. one; in fig. 4 is a section BB in FIG. 1. The clutch contains a driving shaft 1, in the hole of which the leading coupling half 2 and spring 3 are installed. The coupling half 2 has slots which enter ring 4 fixed at the end of the driving shaft 1 n and designed for transmitting torque to the driving coupling half 2 (see Fig. 2). Half coupling 2 has a shoulder 5 with an undercut (at the exit points of the slotted grooves (see FIG. 3). The driven half coupling, which is simultaneously an utmost element, is made in the form of collet 6, the petals 7 of which are installed under

angle 0 to the axis of rotation of the coupling. The petals 7 are angled out at the ends a 8, which are pre-threaded for engagement with the collar 5 and the slotted grooves 9 of the half-coupling 2. The collet 6 is rigidly mounted on the driven lash 10. The thickness of the petals 7 is variable. It decreases from the base of the collet 6 to the folded ends 8 so that the cross-sectional area of the petals also decreases toward the bend ends. This ensures variable stiffness of the petals to reduce the movement of the cowhouses. Due to this design, when the ends of the 8 petals 7 are hooked from the shoulders 5 of the half coupling 2, the petals 7 become stable cigar-shaped (without an additional deforming element in the central part of the coupling half). This makes it easier to turn on the clutch after overload tripping. The clutch works as follows. The petals 7 of the collet 6, which are in engagement with the ends 8 and the groove grooves of the coupling half 2, transfer the torque from the shaft 1 to the shaft 10, or vice versa. The petals 7 are prevented from uncoupling with the leading half coupling 2 by holding the undercut and the collar 5 on the coupling half 2 and the force of the spring 3. With an increase in the angle a and the force of the spring 3, the force of the petals disengagement 7 increases. By varying these parameters, you can adjust the coupling to the required limit torque and limit. turns. When the moment limit is exceeded, the lobes 7 i diverge, occupying the position shown in FIG. 1 schtrich-dash. The driving half coupling 2 under the action of the spring 3 enters the hole of the shaft 1, the chain is completely broken, and the shaft 10 is stopped. Similarly, the clutch is disengaged if the speed limit is exceeded. In this

767430

In this case, the petals 7 are opened by centrifugal forces.

To engage the coupling, it is necessary to take the leading coupling half 2 to the right, overcoming the force of the spring 3, and lead the ends of 8 petals 7 into the grooves 9 slots under the flange 5. With this petals 7 due to variable rigidity take a cigar-shaped shape and are held by a spring-loaded coupling half 2. The presence of flexible petals allows using such a coupling, connect the shafts with a significant intermixing or skewing; The petals themselves, at this, play the role of a compensating link. The simplicity of the design and the variable stiffness of the petals thickening towards the base of the collet increase the service life of the coupling and its reliability. The clutch is guaranteed to shut off the drive during overloads, it is convenient and quick to turn on. formula is inventive safety compensating coupling comprising a leading half coupling flange having an undercut, and a driven clutch half with the collet petals set at an angle to the rotational axis of the coupling and made with curved ends pursed to undercut bead, characterized in that, in order to increase the durability of , reliability and improved operating conditions, the collet tabs are filled with variable thickness, decreasing towards the folded ends of the tabs. Sources of information taken into account in the examination 1.US Patent N ° 2558158, cl. 64-29, 1945. 2, USSR Copyright Certificate No. 597882, p. F 16 D 43/20, 1977 (prototype).

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Claims (1)

Claim Safety compensating coupling containing a leading coupling half with a collar having an undercut, and a driven half coupling with collet petals mounted at an angle to the axis of rotation of the coupling and made with bent ends that are tucked into the undercut of the collar, characterized in that in order to increase durability, reliability and improvement of operating conditions; the collet tabs are made of variable thickness, decreasing towards the bent ends of the petals.