SU1221157A1 - Gripping device - Google Patents

Description

The invention relates to lifting devices for lifting and transferring loads, namely: electromagnetic grippers for transferring long ferromagnetic pipes of large diameter.

The purpose of the invention is to increase reliability and ease of operation.

FIG. 1 shows the electromagnetic capture, front view; in fig. 2 is a view A of FIG. 1 (view of the extreme electromagnet with clamps installed on it with limit switches).

Electromagnetic gripper is designed for gripping and transporting long ferromagnetic pipes 1 of large diameter.

On the hook 2 of the crane using the sling 3 is suspended the yoke 4. On the yoke 4 and the controlled electromagnets: central 5 and extreme 6, fixed blocks 7 are installed, through which the general carrying cable 8 passes, with its ends fixed in the holes of the yoke 4 and holding electromagnets 5 and 6. Between the central electromagnet 5 and the extreme electromagnets 6, any number of additional controlled electromagnets can be installed. An electric actuator 9 is mounted on the central electromagnet 5, on the shaft 10 of which a transverse spoke 11 is fixed, which, with its ends, enters the grooves 12 of the vertical guide hole 13 made in traverse 4. Extreme electromagnets 6 are connected with traverse 4 by rigid parallel tracks 14 with hinges 15 in the places of attachment. On one of the extreme electromagnets 6, two clamps 17 are mounted on the outer end of the hinges 16 that are spring-loaded relative to the electromagnet 6, and limit switches 18 are placed on the inner surface of the console part.

On the control panel, in the driver's cabin, a controlled power supply unit 19 of the central electromagnet 5, a controllable power supply unit 20 of the extreme electromagnets 6, a controllable power supply unit 21 of the electric drive 9 are installed. The limit switches 18 are electrically connected to the control unit 21 of the electric power drive 9.

The device works as follows.

The crane driver lowers the yoke 4 onto the pipe 1 being gripped so that the central

0

five

0

five

0

five

The electromagnet 5 hit the middle of the tube 1. This is not a problem, since the axis of the hook 2 of the crane coincides with the vertical axis of the central electromagnet 5. Then the driver turns on the power to the central electromagnet 5 from the controlled power supply unit 19, the electromagnet 5 unit bends to the pipe 1 and due to the fact that the electromagnets 5 and 6 are suspended on a common carrier cable 8, the de-energized extreme electromagnets 6 are manipulated with the crosshead 4 from the driver’s side in a gap of 10–20 mm relative to the pipe to be gripped 1. After that, the machinist supplies power to the electric drive 9 using the controlled power supply unit 21. A spoke 11 mounted on the drive shaft 9 comes into mechanical contact with the side surface of the groove 12 of the vertical hole 13, and the yoke 4 rotates around the axis of the fixed unit 7 of the central electromagnet 5 and around the hook 2.

With the passage of the extreme electromagnet 6 with clamps 17 above the pipe 1, the first clamp is folded from contact with the pipe 1, turning on the hinge 16, passes the pipe and with further rotation of the bar 4 the second clamp 17 with the limit switch 18 contacts the surface of the pipe until it stops. After that, the second limit switch 18 triggers and sends an electrical signal to automatically turn off the power from the controlled power supply unit 21 of the electric drive 9. The longitudinal axis of the traverse 4 coincides with the longitudinal axis of the pipe 1. After that, the driver turns on the power to the extreme electromagnets 6 from the control power supply unit 20. All electromagnets 5 and 6 traverse 4 are magnetized to the pipe 1 and the electromagnetic gripper is ready to transfer the pipe 1.

Performing an electromagnetic gripper with a central electromagnet having independent control, and providing it with an electric drive to turn the crosspiece relative to said electromagnet and at the same time relative to the pipe being gripped, allows one crane operator, Hoe slinger, to reliably take the load (pipe).

Ф11г.2

VNIIPI Order 1547/30 Circulation 799 Subsidiary Subsidiary PPP “Patent, Uzhgorod, ul. Project, 4

Claims (1)

1. CAPTURE containing a crosshead suspended on slings, electromagnets kinematically connected with the crossarm and with each other, characterized in that, in order to increase reliability and ease of use, it is equipped with blocks placed on the track and electromagnets, and the crosshead is made with vertical aperture, aperture hole2. Capture by π. 1, characterized in that the electric drive shaft is made with a transverse spoke that enters at its ends into the grooves made in said sy. the central direction of the electromagnet is made with independent control of turning it on and off and is equipped with an electric drive mounted on it, the output shaft of which is placed in the hole of the beam with the possibility of moving and transmitting torque to the beam, the kinematic connection of electromagnets with the beam, is a cable thrown through the blocks, moreover, at least one of the extreme electromagnets is equipped with a lock of its position relative to the load and limit switches included in the edge control circuit them electromagnets. to SP m