CN2600642Y

CN2600642Y - Engaging type torque limiting safety coupling

Info

Publication number: CN2600642Y
Application number: CN 02273726
Authority: CN
Inventors: 周振平; 迟岩; 李业庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-13
Filing date: 2002-06-13
Publication date: 2004-01-21
Anticipated expiration: 2012-06-13

Abstract

The utility model relates to a joggling-type matrix setting safety coupler used in the power driven system in the elevating machinery and mining machine. The joggling-type torque limited safety coupler is composed of the coupling parts that match with each other. The coupling part is made by joggling an elastic tray (2) of a double wedge (3) with a rigid tray (5) of a flute (4), which are fixed to the semi-coupler (1) and coupler (6) respectively. The double wedge (3) and the flute (4) are in the form of triangle. At least two actinoid levers are adopted to form the elastic tray (2). The end of the actinoid rod is mounted with a circular arc girder and the trigonometric double wedge is positioned above the girder. The monolayer or multi-layers can be adopted in the actinord lever. Compared with the prior two matrix setting couplers, the utility model has the advantages of accurate matrix setting, safety in use, convenient overhaul, reliable function and low cost, etc. The utility model aims to solve the problems that exist in the prior coupler by providing a safe, reliable joggling-type matrix setting safety coupler to protect the moment limitation.

Description

Engagement type limited torque safety coupling

Technical field

The utility model relates to the engagement type limit square safety coupling of handling machinery, mining machinery medium power transmission system.

Background technique

In the machinery transmission process, the bigger heavy mechanical equipment of particularly exerting oneself, when working machine is subjected to irresistible resistance suddenly, prime mover can't make a response rapidly (outage and factors such as inertia rapidly) cause device damage even personal injury.Therefore, safety limit square device is installed all in the transmission system of these equipment, existing limit square safety coupling has two kinds of forms.Two kinds of friction plate form and spring clamping bead types, reliability and limit square precision all do not reach requirement, and the working principle of friction disk type is to compress the back by two friction plates to produce moment of torsion by stiction transmission power, and slide relative plays the effect of limit square during overload.Because static friction coefficient itself just is not easy control, and working environment makes between the friction plate and to produce factors such as foreign material get rusty, and time one length can cause static friction coefficient to alter a great deal, and does not have protective action; The working principle of clamping bead type coupling is initiatively to load onto the ball that spring withstands the end in the cylindrical slideway on the flange plate; block semicircle orifice on the driven flange plate and power transmission produces moment of torsion; this power has component in the slideway direction; in case overload; skid thereby this component can press ball people's slideway card not live driven flange plate and to play a protective role; its problem is to have grown the time can fill foreign matter or slideway in the rear slide to get rusty and hinder ball and slip into slideway; all the time block driven disc, do not have protective action.Existing these two kinds of safety coupling Environmental Conditions require high, and up to the present poor reliability does not also come into operation at the safe and reliable limit square device of a kind of long-time energy.

Technology contents

The purpose of this utility model is to solve the problems referred to above that existing coupling exists, and a kind of engagement type limited torque safety coupling of realizing the protective action of limit square safely and reliably is provided.

Above-mentioned purpose of the present utility model is achieved in that accompanying drawings is as follows:

Engagement type limited torque safety coupling is made up of the coupling part that cooperatively interacts, and coupling part is that the rigid disk 5 that has the resilient disc 2 of double wedge 3 and have a groove 4 is meshing with each other and forms, and they are separately fixed on the half-coupling 1,6.Such scheme can effectively be realized overload protection; promptly in transmission system; because the abnormal conditions of working end; when making the output torque of prime mover surpass safe limit value; safety limit square device " skids " and makes the moment of torsion of transmission be no more than limit value under the situation of not stall of prime mover, thereby realizes overload protection.

Because the elastic element working space in the utility model is big, ordinary circumstance can not hinder its distortion because of foreign matter, slip surface is a stressed bigger face, and be operated in the slip, but lubricating oil filling is antirust, and reinforcement is lubricated, the coefficient of kinetic friction is controlled easily, compare with the torque-limiting clutch of existing two kinds of forms, have the limit square accurate, safe in utilization, the maintenance convenient, reliable, low cost and other advantages.

Description of drawings:

The sectional view of Fig. 1 half-coupling 1;

The sectional view of Fig. 2 resilient disc 2;

The sectional view of Fig. 3 rigid disk 5;

The sectional view of Fig. 4 half-coupling 6;

The shaft side figure of a kind of rigid disk of Fig. 5;

The shaft side figure of a kind of resilient disc of Fig. 6;

The another kind of resilient disc shaft side figure of Fig. 7.

Fig. 1---Fig. 4 is a half-coupling 1, resilient disc 2, rigid disk 5, the assembling sequence schematic representation of half-coupling 6.

Embodiment:

Further specify particular content of the present utility model and concrete working procedure thereof below in conjunction with accompanying drawing.

The kind of drive of the present utility model adopts the engagement transmitting torque of resilient disc 2 and rigid disk 5, and half-coupling 1 is passed through in prime mover input, resilient disc 2, and rigid disk 5, half-coupling 6 outputting powers are to working machine.Half-coupling 1 and half-coupling 6 are according to the output form of prime mover and the input form design of working machine.Resilient disc 2 links to each other with half-coupling 1, and rigid disk 5 connects with half-coupling 6.

Engagement type limited torque safety coupling is by the mesh form driving torque of resilient double wedge 3 with rigidity groove 4, and axial thrust load slided engagement disengagement generation when the moment of institute's transmission surpassed limit value, can realize limitting the square protective action safely and reliably.

Said double wedge 3 is a triangle with groove 4.Be that elasticity double wedge and the rigidity engagement form that intermeshing resilient disc 2 and rigid disk 5 adopt is triangle teeth groove mesh form.

Resilient disc 2 can adopt two kinds of forms.Consult Fig. 6: first kind of form has n radiation straight-bar, and rod end is equipped with the triangle double wedge, and resilient disc 2 can adopt 〉=and 2 radiation bar constitutes.N=2 for example.Consult Fig. 5: 5 of rigid disks are provided with n vee gutter according to resilient disc 2 on the periphery of card; can mesh with the rake tooth on the elastic rod when turning to certain angle; axial force all is directly proportional with the moment of torsion that transmits with peripheral force in the power transmission process; when reaching limit value, moment of torsion made bar produce bending deflection; when the amount of deflection that produces at rod end equals triangle is poor on the rigid disk 5 the degree of depth; then rake tooth slides on rigid disk to reach the effect of limit square; when moment of torsion is lower than the qualification moment of torsion; engagement again; the amount of deflection that axial force produces is during less than groove depth, and no longer sliding to reach automatic protection; automatically restore.

Consult Fig. 7: the resilient disc 2 of second kind of form is to install circular-arc beam 7 additional at the radiation rod end, and lance tooth is located on the circular-arc beam 7.The individual straight-bar of n (n=2) end that is about to first kind of form along the circumferential direction adds a circular-arc beam 7 to increase its axial deformation, in hour disengagement easily of restraining moment, rigid disk 5 has n the lance tooth on the vee gutter cooperation resilient disc 2, the joggleword principle is with first kind, and just resiliently deformable is big.

Above-mentioned radiation bar can adopt single or multiple lift, with the torque limiting of how much reconciling of the number of plies.

Claims

1, engagement type limited torque safety coupling is made up of the coupling part that cooperatively interacts, it is characterized in that coupling part is that resilient disc (2) with double wedge (3) and the rigid disk (5) with groove (4) are meshing with each other and form, they are separately fixed on half-coupling (1), (6).

2, engagement type limited torque safety coupling according to claim 1 is characterized in that said double wedge (3) and groove (4) are triangle.

3, engagement type limited torque safety coupling according to claim 2, it is characterized in that said resilient disc (2) can adopt 〉=2 radiation bar constitutes.

4, engagement type limited torque safety coupling according to claim 3 is characterized in that said radiation rod end installs circular-arc beam additional, and the triangle double wedge is located on the circular-arc beam.

5, according to claim 3,4 described engagement type limited torque safety couplings, it is characterized in that said radiation bar can adopt single or multiple lift.