UA135741U - FLANGE-FINGER COUPLING ELASTIC - Google Patents

Abstract

The coupling contains half-couplings in the form of polyhedra with flat, rounded or shaped sides, fingers are established rigidly in their corners. Half-couplings are made in the form of a hub at the end with a flange in the form of an equilateral triangle with rounded vertices and pressed fingers into holes with centers lying on the bisectors of the vertex angles at the same distance from the axis of rotation of the coupling. Along the straight sides of the flat faces and parallel to them are made holes at a distance δ from the point of contact with width b and length l, symmetrical about the same bisectors, and form flat elastic areas for contact with fingers rigidly attached to the couplings. Fingers with flat elastic sections of half couplings contact without a backlash, and even with insignificant tension.

Description

The useful model belongs to mechanical engineering and can be used to connect the shafts of mechanisms and machines, as well as to prevent kinematic chains from impact and dynamic overloads.

Well-known flange couplings (see the book V.O. Malashchenko Drive couplings. Designs and examples of calculations: Study guide. - Lviv: Publishing House of the National University "Lviv Polytechnic", 2006. - 196 p., fig. 2.7, p. 27 ) which contain two half-couplings, in the form of hubs with flanges, connected to each other by bolts placed in holes with a gap - one option, and placed in holes without a gap - the second option, which transmit torque due to frictional forces arising on the contact surfaces of the half-couplings in the first version and directly with bolts that are under the influence of shear deformation in the second version and serve for a rigid connection of coaxial shafts.

The main disadvantage of such couplings is that they do not compensate for inaccuracies that arise due to slight incompatibility of the shaft axes when they are connected and transfer the load rigidly, which negatively affects the drive parts and the machine as a whole.

The well-known clutch (see patent of Ukraine for utility model Mo 129902, MPK E 16 0 1/06, E 160 1/8, E 16 O 3/00, Byul. Mo 22, November 26, 2018.) is the closest in its technical essence to the proposed useful model, which contains two half-couplings in the form of polyhedra with flat faces and rigidly fixed fingers located in their corners.

The main disadvantage of this coupling is that due to the rigid contact of the fingers of one half-coupling with the flat part of the face of the second half-coupling, the torque is transmitted instantly, and in addition, due to the gaps between the fingers and the flat areas of the faces, shocks occur, in the case of lined contacts, e.g. , rubber, due to the contact deformation that occurs between the fingers and the flat areas of the faces, the lining has a short durability.

The task of the useful model is to reduce the impact and dynamic torques transmitted by the coupling, increase the durability of finger contacts with flat areas, and compensate for inaccuracies in the positioning of the shafts, which arise due to a slight mismatch of the shaft axes when they are connected due to the introduction into the design of the coupling of elastic plots

The problem is solved by the fact that half-couplings are made in the form of a hub on the end with a flange in the form of an equilateral triangle with rounded vertices and pressed

With fingers in holes with centers lying on the bisectors of the angles of the vertices at the same distance from the axis of rotation of the coupling, and holes are made along the straight sides of the flat faces and parallel to them at a distance b from the point of contact with width B and length I, symmetrical relative to the same bisectors , and form flat elastic areas for contact with the fingers rigidly fixed on the half-couplings, and the fingers with the flat elastic areas of the half-couplings contact without a gap, and even with a slight tension.

The proposed flexible flange-finger coupling transfers the dynamic torque from the shaft to the shaft more gently, eliminates shock loads due to the absence of gaps in the contacts, has greater durability and compensates for the inaccuracies of the assembly of the shafts, due to the deformation of the flat elastic sections of the half-coupling flanges.

The essence of the useful model is explained by the drawings, where: in fig. 1 shows a flange-finger flexible coupling, general view, longitudinal section; in fig. 2 shows what in fig. 1, ed

AND.

The flexible coupling consists of identical right 1 and left 2 half-couplings and fingers 3. Half-couplings 1 and 2 are made in the form of hubs 4 and flanges 5 in the form of an equilateral triangle. On the end surfaces of the flanges 5, on the bisectors of the vertices of the equilateral triangle, holes are made equidistant from the axis of rotation of the clutch into which the fingers 3 are pressed. In addition, on the side of the end surfaces of the flanges 5, symmetrically relative to the mentioned bisectors, through-cuts b are made parallel to the flat faces at a distance b from points of contact with the finger of width B and length |.

The coupling is assembled as follows. To half coupling 1, with pressed fingers Z in flange 5, half coupling 2 is attached, with pressed fingers Z in flange 5, turning it 60" relative to half coupling 1, and set without gaps so that fingers Z contact flat faces above through slots 6.

The clutch works like this. The transmission of the torque from the half-coupling 1 to the half-coupling 2 is carried out through the fingers 3. When dynamic torques occur, the flat areas of the faces above the through slots 6 are deformed - they bend. Due to the deformation of the flat areas of the faces above the through slots 6, the torque is transmitted more gently and the radial oscillations that arise due to a slight mismatch of the shaft axes when they are connected are damped. Contacts of fingers C with flat areas of faces above through slots b 60 are more durable.

The proposed flexible flange-finger coupling transfers the dynamic torque from the shaft to the shaft more gently, eliminates shock loads due to the absence of gaps in the contacts, has greater durability and compensates for the inaccuracies of the assembly of the shafts, due to the deformation of the flat elastic sections of the half-coupling flanges.

Claims (1)

UTILITY MODEL FORMULA Coupling containing half-couplings in the form of polyhedra with flat, rounded or shaped sides, fingers fixed rigidly at their corners, characterized by the fact that the half-couplings are made in the form of a hub on the end with a flange in the form of an equilateral triangle with rounded tops and pressed fingers in holes with centers lying on the bisectors of the angles of the vertices at the same distance from the axis of rotation of the coupling, and holes are made along the straight sides of the flat faces and parallel to them at a distance b from the point of contact with width B and length |, symmetrical with respect to the same bisectors, and form flat elastic areas for contact with the fingers rigidly fixed on the half-couplings, and the fingers with the flat elastic areas of the half-couplings contact without a gap, and even with a slight tension. х х Х х m A sedeeyu Ga х, Z y dr urnereetenne Meorevsovn щ хх neck nipple A and Ii pk peki U A fig. 1 - same 3 - and K VK S M, S kV she WE eggs OSA x ! ka -E a NI y x I A : i shcha I i m Ko u xx Hour kon v / M Z ME i A ZH che I I 7 Ko kn EK) to her Z y uh y. N y y TE sevy m Ko z as Deeeyudyutya s y r V; vch: Ka e CHI; ooo kdkchnn In documenting x seams or stitches and a ren Fig. 2