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- Autors
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Malashchenko V. O., Strilets V. M., Andrushkov V. I., Strilets O. R
- Issue
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Hoisting and transport equipment, 2020, №3(64)
- Pages
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96-108
- DOI
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10.15276/pidtt.3.64.2020.09
- Abstract
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The structure of the flange-pin elastic safety coupling with a supply of free movement, which contains two half-muffs, has been considered. First half-muff are made in the form of a hub and a flange with a circular outline. A circular cut are made on the cylindrical surface of the flange in which the springs are axially symmetrically arranged and secured by pins with the possibility of elongation along the bottom of the cut in the case of radial deformation. The second half-muff is made in the form of a hub and a flange in which the fingers are ax symmetrically fixed at the same distance from the axis of rotation of the coupling. Shafts connection technology and the principle of operation of such coupling has been described.
A method of calculating a plate spring of a parabolic shape during the transmission of its ultimate torque has been developed. When solving this problem, the following assumptions has been taken - reactions are directed in parallel with the action of an external force and equal to its half; the friction forces at the points of contact with the cut surface, directed along the horizontal line; the load is applied to the middle of the spring. Using the technique of solving statically indefinite problems from resistance of materials or construction mechanics, the expression has been obtained to determine the maximum bending moment with maximum spring deformation. With the help of analytical expressions it is possible to determine the limiting moment of bending of a spring of a coupling and by known methods to estimate its durability and working ability.
Such couplings improve the performance of the mechanical drives of the machines by transmitting the dynamic torque softer and compensating for inconsistencies and preventing shaft overload.
- Keywords
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flange coupling, pin, spring, ultimate torque, bending moment, deformation
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