CN2137310Y - Elastic coupling - Google Patents

Abstract

The utility model relates to an elastic coupling, belonging to a coupling. The coupling is formed by that two ordinary semi-couplings are connected by a set of arced elastic components, and when in work, dynamic force is transferred by the arced elastic components. The coupling is suitable for one-way power transmission of middle and high speed light load, or medium-sized load. The utility model is characterized in that in the process of installation and transmission, the variations of the axial displacement and radial displacement between the two shaft lines which are connected, and the variation of the included angle of the two shaft lines are permitted. The utility model has the advantages of high elasticity, the ability of absorbing impact and vibrations, good electrical apparatus insulation performance, simple structure, easy manufacture, low cost, and convenient use and maintenance.

Description

Elastic coupling

The utility model belongs to coupling.

Coupling generally is divided into rigidity and elastic coupling flexible coupling two big classes.Can there be axially, radially reaches the angle error between axis between two axis that elastic coupling flexible coupling commonly used at present allows respectively to be connected according to different forms when mounted, and these errors all require very little, this just makes that manufacturing and installation precision are higher, does not allow to have in transmission process simultaneously error amount to change.For example: between two axis that elastic ring column pin shaft coupling allows to be connected radial error can be arranged is 0.14～0.2 millimeter, and the axis angle error was less than 40 minutes.Between two axis that rod pin coupling allows to be connected axial error can be arranged is 1.5～5 millimeters, and radial error is 0.2～1.5 millimeter, and the axis angle error was less than 30 minutes.See under " utility machine design handbook ".And complex structure, the accuracy of manufacturing height.

At the problem that prior art exists, the purpose of this utility model provides the New Model of Flexible Coupling of variable angle between a kind of axial in installing, allowing in a big way in the transmission, radial displacement simple in structure, easy to manufacture and axis.

The utility model misplaces in proper order to be cemented between two half-couplings (1) and (3) by half-coupling (1), half-coupling (3) with through banded resilient member (2) the two ends arc that bolt (4) is made one group of uniform elastic material and forms.

Described embodiment is further described below in conjunction with accompanying drawing.

Accompanying drawing 1 is structural drawing of the present utility model.

Accompanying drawing 2 is sectional view of the present utility model.

Accompanying drawing 3 is banded resilient member figure of the present utility model.

Two common half a couplers (1), (3) are connected with diaxon with key respectively, by bolt (4) one group of arc elastic member (2) order are cemented on two half a couplers with misplacing. Such as Fig. 1, power is passed on other half a coupler (1) by elastic component (2) by half a coupler (3) (direction of rotation such as Fig. 1). Distance H between two half a couplers is determined by the axial displacement between the diaxon and the angle between the axis, is generally 5～100 millimeters. Half a coupler is connected such as Fig. 2 with elastic component, connects radius R i(i=1,2), R1 and R2 determine according to concrete structure, can be equal, also can not wait. The minimum of a value of Ri is determined by the size of institute's transmitting torque. Elastic component such as Fig. 3, its length L is determined by the radial displacement between H and the two axial lines and angle. The elastic component number is generally got more than 2, and concrete quantity determines that by the size of transmitting torque generally get 3,4,6,8 are advisable. The width of elastic component and thickness also affect the size of institute's transmitting torque. The established angle α (such as Fig. 2) of elastic component determines by H and L, and when R1 ≠ R2, α also is subjected to the impact of Ri, general α=100～160 degree.

Preferred embodiment of the utility model is: two common half-couplings are prior art, resilient member is selected common flat belt for use, the resilient member width is selected by the width specifications of flat belt, and resilient member thickness is determined by the several times of flat belt thickness, is generally used by 2～3 sections overlapping backs of flat belt.Also can select for use nylon knitting belt, elastic sheet metal or plastic sheet as resilient member.

The utility model effect is: owing to adopt arc elastic member transferring power, energy impact-absorbing and vibration are suitable for the situation that the load axis is three-dimensional vibrating. Have overload protection function, be particularly suitable for agricultural machinery. When adopting nonmetallic materials as elastic component, has good electrical apparatus insulation performance. Reduced the requirement to the half a coupler accuracy of manufacture, simple in structure, easy to manufacture. Use, easy to maintenance, cost is low.

Claims (2)

1, a kind of New Model of Flexible Coupling is made up of two half-couplings and its joint branch, and its attachment portion that is characterised in that of the present utility model is its two ends arc to be misplaced in proper order through bolt (4) by one group of uniform banded resilient member (2) to be connected between two half-couplings (1) and (3).

2, a kind of New Model of Flexible Coupling as claimed in claim 1, the material that it is characterized in that banded resilient member (2) is rubber-like metal or nonmetallic material, for example: drivign belt, nylon knitting belt, elastic sheet metal, plastic sheet.

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