CN2616369Y - Electromagnetic friction clutch brake - Google Patents

Abstract

An electromagnetic friction clutch brake includes a crankshaft transmission end, a belt pulley, an intermediate moving coil and a machine body. There is a spline groove between the crankshaft transmission end and the shaft section assembled with the belt pulley and the shaft section assembled with the machine body. The drive end of the crankshaft is installed on the body through bearings, and the bearings are fixed with bearing caps. The middle moving coil is installed on the drive end of the crankshaft and matches with the spline groove. The belt pulley is installed on the top of the crankshaft drive end through bearings and fixed with nuts. The side of the middle moving coil facing the body is inlaid with a permanent magnet, and an excitation coil is arranged on the body at a position corresponding to the permanent magnet, and the excitation coil is connected with the controller. The body and the middle moving ring are respectively equipped with friction plates, and the pair of friction plates form a friction pair; the middle moving ring and the pulley are respectively equipped with friction plates, and the pair of friction plates form a friction pair. The utility model has the function of realizing inching.

Description

Electromagnetic friction clutch brake

The utility model relates to a mechanical transmission device, in particular suitable for clutches and brakes of small presses.

The small presses currently used and produced mainly use rigid clutches and band brakes. The actions of rigid clutches and band brakes are interrelated. Once the clutch is engaged, the brake cannot be disengaged at any time, and the action can only be completed once, so it cannot be realized. inch.

The purpose of the utility model is to provide an electromagnetic friction clutch brake capable of realizing inching.

The purpose of this utility model is achieved in that the utility model comprises crankshaft drive end, belt pulley, middle moving coil and body. There is a spline groove between the crankshaft transmission end and the shaft section assembled with the belt pulley and the shaft section assembled with the machine body. The drive end of the crankshaft is installed on the body through bearings, and the bearings are fixed with bearing caps. The middle moving coil is installed on the drive end of the crankshaft and matches with the spline groove. The belt pulley is installed on the top of the crankshaft drive end through bearings and fixed with nuts. The side of the middle moving coil facing the body is inlaid with a permanent magnet, and an excitation coil is arranged on the body at a position corresponding to the permanent magnet, and the excitation coil is connected with the controller. The body and the middle moving ring are respectively equipped with friction plates, and the pair of friction plates form a friction pair; the middle moving ring and the belt pulley are respectively equipped with friction plates, and the pair of friction plates form a friction pair.

When the press is working, current flows through the excitation coil. When the direction of the generated magnetic field is opposite to that of the permanent magnet, a large repulsion force is generated between the two, and this force pushes the middle moving coil to move quickly towards the pulley, making the The friction plate between the middle moving coil and the pulley contacts to generate friction. The frictional force makes the middle moving coil drive the transmission end of the crankshaft to rotate synchronously with the belt pulley to complete the clutch engagement. After changing the direction of the current in the excitation coil, the direction of the generated magnetic field is the same as that of the permanent magnet, and a large attraction force is generated between the two, which pulls the middle moving coil to move rapidly towards the body, so that the middle moving coil and the permanent magnet The friction plates between the bodies contact and generate friction. The friction force quickly brakes the rotating crankshaft transmission end, thereby achieving the purpose of inching.

Below by accompanying drawing, the utility model is further described.

Fig. 1 is the structural representation of the utility model.

See Fig. 1, the utility model comprises crankshaft drive end 12, belt pulley 1, middle moving coil 7 and body 10. A spline groove 5 is formed between the crankshaft transmission end 12 and the shaft section assembled with the pulley 1 and the shaft section assembled with the machine body 10 . The crankshaft transmission end 12 is installed on the body 10 through the bearing 11, and the bearing 11 is fixed with the bearing cover 2. The middle moving coil 7 is installed on the crankshaft transmission end 12 and cooperates with the spline groove 5 . Belt pulley 1 is installed on the top of crankshaft drive end 12 by bearing 4, and is fixed with nut 3. The middle moving coil 7 is inlaid with a permanent magnet 6 facing the body 10, and an excitation coil 9 is installed at a position corresponding to the permanent magnet 6 on the body 10, and the excitation coil 9 is connected to the controller. The body 10 and the middle moving ring 7 are equipped with friction plates 8 respectively, and the pair of friction plates 8 form a friction pair; the middle moving ring 7 and the pulley 1 are equipped with friction plates 13 respectively, and the pair of friction plates 13 form a friction pair.

When the press is not working, the friction plate 8 between the intermediate moving coil 7 and the body 10 is engaged by the magnetic force generated by the permanent magnet 6 and the iron core in the exciting coil 9 and the body 10, and the friction force generated makes the brake brake. All parts of the press are relatively static.

Claims (1)

1. An electromagnetic friction clutch brake, comprising a crankshaft transmission end, a pulley, an intermediate moving coil and a body, characterized in that: a spline groove is formed between the crankshaft transmission end and the shaft section assembled with the pulley and the shaft section assembled with the body, and the crankshaft transmission The end is installed on the body through the bearing, and the bearing is fixed by the bearing cover; the middle moving ring is installed on the crankshaft driving end and matched with the spline groove; the pulley is installed on the top of the crankshaft driving end through the bearing, and fixed with a nut; the middle moving ring faces the side of the body Inlaid with permanent magnets, an excitation coil is installed on the body corresponding to the permanent magnet, and the excitation coil is connected to the controller; friction plates are respectively installed on the body and the middle moving coil, and the pair of friction plates form a friction pair; the middle The moving coil and the pulley are respectively equipped with friction plates, and the pair of friction plates form a friction pair.

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