SU1303760A1 - Slip coupling - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used in all parts of the national economy to connect the shafts of machinery and mechanisms and to disconnect the said 13 during overload. The purpose of the invention is to increase the load capacity. The two cam half couplings 2, 3 are pressed to each other by an elastic link 4. The half coupling 3 is connected with the possibility of moving in the axial direction with one end of the torsion element 8, which is connected with the other end to the driven shaft. When the clutch is activated, the movement of the coupling half 3 is accompanied until the cam 1 leaves its engagement, the compression of the elastic link 4 and the twisting of the torsion element 8, which determines the increased load capacity. 1 hp f-ly, 4 ill. Q. with O) fi. one

Description

one

The invention relates to mechanical engineering and can be used in all sectors of the national economy to connect the shafts of machines and mechanisms and disconnect the ones mentioned during overload, mainly in starters, starting devices of automotive and tractor engines.

The purpose of the invention is to increase the load capacity.

Fig. 1 shows a clutch for transmitting torque from O to the calculated value, the engaged position; 2 is the same, the off position (the torque has exceeded the allowable value); FIG. 3 shows a torsion element assembled from thin Steel plates, twisted; figure 4 - the same, free

13

no load condition.

The safety clutch contains couplings 2 and 3 connected by end cams 1, pressed together by an elastic link 4 in the form of a compression spring, placed 1 m between the stop 5 mounted on the shaft 6 and the half coupling 3 mounted on the splines 7 of the same shaft 6, as well as torsion element 8, In the above embodiment, the emphasis is made in the form of a housing 9 with two bearing flanges 10, in which bronze inserts 11 or ball bearings are mounted. Inside the housing 9 is placed a torsion element 8, fixed at one end to the shaft section 6. with slots 7, and at the other end connected to an axis 12, fixed in the housing 9 by means of a fixing screw 13 and an annular groove 14.

The torsion bar 8 has, for example, a square (rectangular) cross section, the area and length of which are selected by calculation to transmit a predetermined torque. The thickness of a single plate can be in the range of 0.6-1.5 mm and depends on the required torsion torsional rigidity. The torsion element 8 is fastened to the shaft 6 and the axis 12 with pins 15. Moreover, the ends of the element 8 are inserted into square sockets made in the ends of the shaft and the axis, and then fixed with pins.

1. Safety clutch containing two coupling halves mounted on connecting shafts and connected by end cams, rested against each other by an elastic link, placed by a stop mounted on the shaft and mounted on the latter with axial half-coupling, as well as a torsion element.

Half coupling 3 is made in the form of a hollow cylinder, inside which the protrusion located along the axis of the coupling, slings the splined part of the shaft 6. At the protrusion, so that the splined part of the load capacity is shaft 6 is made several col torsion element connected by one end grooves (for example, three), in which with the possibility of axial displacement 25

037602

A spring washer 16 is inserted. The grooves, milled grooves or round holes for the pin (the washers can be fixed differently) are made at a certain distance a from each other and from the inner end surface 17. The distances are chosen by calculation, and then their value is determined experimentally. The magnitude of the distance a determines the maximum value of the transmitted torque. When a dynamic overload (shock, braking) occurs during operation, the torsion element 5 damps the dynamic loads and protects the engine from dynamic loads.

If the braking torque exceeds the allowable torque of 20 times, the half-coupling 3 brakes and moves in the axial direction, compresses the elastic link 4 (compression spring) and twists the torsion element 8 until the cams 1 are released.

Thus, the load capacity of the coupling is determined by the nature of the work of the two: x: links — springs

thirty

45

squeeze, as in traditional couplings.

40

and torsion element.

The proposed clutch is designed to work with different mechanisms, in this case for each of them the maximum torque is limited by various positions of the squeeze washer. The clutch provides automatic shutdown of the transmission from the engine with its subsequent automatic engagement and allows limiting the maximum torque value. The transmitted moment of the device can be almost any desired value.

Claims (1)

1. Safety clutch containing two coupling halves mounted on connected shafts and connected by end cams, rested against each other by an elastic link, placed by a stop mounted on the shaft, and mounted on the latter with axle coupling, as well as a torsion element. 50 55 located along the axis of the coupling, which means that, in order to increase the load capacity, the torsion element is connected at one end with the possibility of axial displacement 313037604 nor with a movable coupling half, but with a different limiting device for moving the coupling halves, with a driven shaft, placed at the end of the torsion element2. The clutch according to claim 1, about the t of l and h and the utah from the end of the Kulichkov relieved by the fact that it is equipped with a coupling. eleven sixteen FIG. 2 FIG. Editor L.Povkhan Compiled by T.Orlova Tehred L.Oleinik Order 1290/36 Circulation 812 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Proektna St., 4 Proofreader A.Zimokosov