CN2153672Y

CN2153672Y - Heavy-duty rubber spring safety coupling

Info

Publication number: CN2153672Y
Application number: CN 92220566
Authority: CN
Inventors: 赵铁; 代树章; 殷国茂
Original assignee: CHENDU SEAMLESS STEEL TUBING MILL
Current assignee: CHENDU SEAMLESS STEEL TUBING MILL
Priority date: 1992-10-24
Filing date: 1992-10-24
Publication date: 1994-01-19
Anticipated expiration: 2002-10-24

Abstract

The utility model relates to a heavy-duty rubber spring safety coupling. Circular holes used for pretension rubber are arranged on two half shaft couplings which are connected by six fan-shaped supporting arms. A rubber elastic component is positioned on the both sides of the two half shaft couplings. A cross section which is vertical to the direction of transmission force is a rectangle whose four corners are provided with circular arcs. The utility model is characterized in that the distance between the diameter of the distribution circle of a pretension hole D2 and the diameter of the distribution circle of a bearing hole D1 is delta d (delta d=(1-1.5) sinr/z * D1), wherein, r is a prepressing angle. The utility model has the advantages of simple processing technology, small pretension torque, light weight., small rotational inertia, etc.

Description

Heavy-duty rubber spring safety coupling

The utility model relates to coupling, is specially adapted to transmit in rolling machinery the safety shaft coupling with rubber-elasticity for heavy torque of enormous impact moment of torsion.

Chinese patent 85101485 discloses a kind of " safety shaft coupling with rubber-elasticity for heavy torque ", transmit the large impact moment of torsion though solve no gap, but it is special-shaped square hole that this coupling gives tieholen, the processing technology complexity is difficult to reach accurate processing request, rubber elastic element with power transmission direction vertical cross-section be garden shape, fail to make full use of fan-shaped cavity space.Transmit big impulsive torque for satisfying, whole coupling is heavier, has increased the rotary inertia of transmission system.

The utility model is intended to overcome the deficiency of above-mentioned coupling, provides a kind of processing technology easy, and it is little to give the little and rotary inertia of tight moment, lightweight safety shaft coupling with rubber-elasticity for heavy torque.

Characteristics of the present utility model are, giving tieholen on the half-coupling is the hole, garden, give tieholen distribution garden diameter and bearing hole distribution garden diameter at a distance of △ d value, and rubber elastic element is the rectangle of four jiaos of band garden arcs in the cross section vertical with the power transmission direction.

Coupling described in the utility model, advantage such as processing technology is simple, and it is little to give tight moment, and mounting or dismounting are convenient, and rotary inertia is little, the onesize moment of torsion the utility model of transmission is than the weight of the described coupling of prior art light 1/3rd.

Now in conjunction with the accompanying drawings coupling of the present utility model is further specified.

Fig. 1, the plan view of the utility model coupling.

Fig. 2, the A-A sectional view of Fig. 1

Fig. 3, rubber elastic element is at power transmission direction vertical cross-section diagram.

As shown in Figure 1 and Figure 2, the utility model coupling comprises half-coupling 2, half-coupling 5, and uniform six fan-shaped cavities 7 and six bearing hole 3 on the half-coupling 2, uniform six are given tieholen and six holes, garden that fan-shaped support arm handle is installed on the half-coupling 5.And give tieholen 4 distribution garden diameter D2 and bearing hole 3 distribution garden diameter D ₁Differ △ d value.

△d＝（1－1·5）sin／2·D1

In the formula: r-gives and presses the angle

D ₁-bearing hole distribution garden diameter

For improving machining accuracy, simplified processing process, the tieholen that gives on the half-coupling 5 is the hole, garden, half-coupling 2 and half-coupling 5 are connected by six fan-shaped support arms 6, rubber elastic element 1 inserts bearing hole by special tool and gives and rotate required giving in the tieholen and press angle r, gives being tightly packed in fan-shaped support arm both sides.For making full use of the existing space of fan-shaped cavity on the coupling, improve the bearing capacity of rubber elastic element, as shown in Figure 3, rubber elastic element is the rectangle of four jiaos of band garden arcs at power transmission direction vertical cross-section.

During work, power, and is passed to power through giving tight rubber elastic element along the tangent direction of rotation via fan-shaped support arm 6 from active half-coupling 5, and rubber elastic element is delivered to the power buffering on the driven half-coupling 2.

Claims

1, a kind of safety shaft coupling with rubber-elasticity for heavy torque, comprise two half-couplings, half-coupling (2) is gone up uniform six fan-shaped cavities (7) and six bearing hole (3), half-coupling (5) is gone up uniform six and is given tieholen (4) and six holes, garden that fan-shaped support arm taper shank is installed, two half-couplings connect with six fan-shaped support arms (6), rubber elastic element (1) is positioned at fan-shaped support arm both sides, it is characterized in that: give tieholen distribution garden diameter D ₂With bearing hole distribution garden diameter D ₁At a distance of △ d.

△d=(1-1·5)Sinr/2·D ₁

In the formula: r-gives and presses the angle

D ₁-bearing hole distribution garden diameter

2, by the described coupling of claim 1, it is characterized in that the tieholen (4) that gives on the half-coupling (5) is the hole, garden, rubber elastic element is the rectangle of four jiaos of band garden arcs at power transmission direction vertical cross-section.