SU735557A1 - Apparatus for automatic control of forging crane mechanisms - Google Patents

Description

The invention relates to a lifting transport machinery, in particular to devices for controlling the mechanisms of the crane, and can be used to control the forging crane.

A device for automatic control of a crane is known, comprising switches 1.

A device for automatically controlling forging crane mechanisms is known, which contains an electromagnetic clutch of a safety device, one of the disks of which is connected to the shock absorber of the polyspast crane system, and the other with a spring-loaded lever with a switch for lowering the workpiece 2.

However, the known devices are inconvenient in operation, due to insufficient automation of technological processes.

The purpose of the invention is to increase the convenience of operating the crane.

The goal is achieved by the fact that the device is equipped with a switch for lifting the workpiece and an electric, magnetic coupling of the drive drum, | He5, a suspended load drive.

The swarm is connected with the workpiece lift switch, the workpiece turn switches and the electromagnetic clutch of the turntable, the unbalanced drives of which are connected to the turn turn switches of the cooker, the work movement switch and the electromagnetic clutch of the traveling wheel, the unbalanced driven disk of which is connected to the switch moving the workpiece, as well as opening the KOHTaKTaNH of the control device for manual control of the drive drum and press contacts for locking

15 lifting the rotation and moving the workpiece, and the disconnecting contact of the manual override controller is connected in series with the coil of the electromagnetic clutch of the drive drum

20 control of the drive drum, successively with the coil of the electromagnetic clutch of the safety device, include the second break contact of the manual operator

25 control of the drive drum and the contact of the press to block the lifting of the workpiece, in series with the coil of the electromagnetic clutch of the turning device, the contact of the press is turned on, for

thirty

blocking the rotation of the workpiece, and

. in succession with the coil of the electromagnetic clutch of the running wheel, the contact of the jammed press of the blocking movement of the workpiece is turned on.

Fig. 1 shows the kinematic diagram of the device; Fig. 2 is an electrical circuit for engaging electromagnetic clutches.

The kinematic scheme of the main lift mechanism includes in

drive drum 1 and the polyspast system consisting of ropes 2, rope, blocks 3 and equalizing lever 4 mounted on the shock absorber 5.

A tilter 7 with a driving plate chain 8 for supporting and rotating the workpiece 9 is suspended to the axis of the blocks 3 through shock absorbers b. During the forging process, the pile is supported on the bottom head 1020

press. Its deformation is carried out by the upper head 11.;

The kinematic scheme of the crane movement mechanism provides one running wheel 12..25

The device for automatically controlling the lifting of the load includes an electromagnetic clutch drum, consisting of a drive disk 14 and an unbalanced JQ

Slave disk 15, self-adjusting to its original position with de-energized clutch 13. On the circular surface of the disk 15 there is a semicircular groove, which includes the end of the lever lever 16 of the workpiece lift 16. The clutch 13 is connected to the drum 1 by means of the coupling 17.

The device for automatic control of the descent of the load at a predetermined overload of the crane consists of a disk electromagnetic clutch 18 of the safety device and a system of levers.

The disk 19 of the clutch 18 is connected with a shock-absorber by means of the driving lever 20. 5 polyspast system. On the disk 21 of the coupling 18, a spring-loaded lever 22 is fixed, on the ONE end of which a spring is fixed for turning the lever 22 up to the stop 23 when there are interconnected disks. The second end of the lever 22 is a support for the movable lever of the switch 24.

 A device for automatically setting a workpiece at a given angle,. includes an electromagnetic ufta 25 turn-over device, consisting of a lead 26 and two or more e-suspended self-switches. Auxiliary drive disks. 27, 28. On the circular surfaces of the discs 60 there are semicircular grooves, which ensure the shutdown of the Contact-in switch, her 29, 30 rotation of the workpiece, and fill in a predetermined angular displacement of the preparation, for example,. 65

735557

The disk 26 of the clutch 25 is connected to the axis of the drive sprocket plate chain through the clutch 31.

The device automatically displaces the crane to the width of the upper die head consists of an electromagnetic clutch 32 of the traveling wheel, including a drive disk 33 connected to the low-speed shaft of the crane movement mechanism by means of the clutch 34, and an unbalanced self-aligning 1da1Yc disk 35, on the circular surface of the disk 35 there are two semi-circular a groove for turning the switch 36 to move the workpiece when the crane is moved to the right or left for the width of the upper side of the press.

The automatic control of the crane mechanisms is carried out from the control handle 37 of the hydraulic press. A 11 is attached to the handle; a rotary cam 38, the contact surfaces of which are located at different levels and connected to the contacts of the press for locking the lift 39, rotating 40, 41, and moving 42.43 blanks.

The pins 44,45 ks of the mandrelle for manual control of the drive drum are connected in series with the coils of the sleeves 13, 18.

The device for automatic control of the crane mechanisms works as follows.

The initial installation of the workpiece to its original position is carried out by alternately switching the controllers from the zero position. Then, in accordance with the technological process, the mode of operation of the press and crane is set.

FIG. Figure 1 shows the initial position of the elements of the automatic control system of the crane mechanisms before the start of operation of the press.

When the presser handle 37 is moved downward, the idle stroke of the striker 11 is idle until it comes into contact with the workpiece. Then there is a pause to switch the press to the working stroke. Upon further movement of the handle 37 down, the press is turned on to the working stroke. The top die deforms the workpiece 9, as a result of which it is displaced downward with the chain of turnoff 7, the movement of the chain of turnoff 7 causes deformation of the shock absorbers of the turntable and shock absorber 5 of the polyspast system, as a result of which. The chug 20 and its associated discs 19, 21 and lever 22 rotate relative to the axes of rotation, the contact of the switch 24 is closed and the lifting mechanism is accelerated to the descent by the force of the electric motor and the tension of the ropes and works until the crane overload does not

the contact of the switch 24 will decrease and the actuator will not turn out.

When the drum 1 of the lifting mechanism on the launch starts to rotate, the interconnected discs 14, 15 begin to rotate. The switch lever 16 puffs out of the semicircular groove and closes the contact, KBtryy prepares the lifting control circuit for operation. , In order to lift the striker 11 after the end of the working stroke, the control knob 37 is turned with a press. The position of raising the upper striker. Peck 11 starts to lift. Mats. Upon further rotation of the handle of the control unit 37 by pressing the lever of the switching device, it is displaced from the protrusion of the cam 38 and begins to contact with its lower surface, as a result of which the contacts 39, 40, 42 z.

Since the lifting mechanism control circuit was prepared by the contact of the switch 16 for operation as a result of its closing by the surface 15 when the mechanism was switched to descent, when the contact 39 is closed, the mechanism works to lift until the semicircular slot on the disk 15 returns to its original position and pin 16 does not open the control circuit. After the shut-off mechanism is turned off, the clutch 18 is turned on and its discs are joined.

To automatically rotate the workpiece 9 at a predetermined angle, two switches 29, 30 are provided in the control circuit of the rotation mechanism, ensuring their angular movements of the workpiece are respectively 90 ° (drawing per square) and (billetting hexagonal ingot).

The rotation of the workpiece begins after closing by contact 40 of the drive control circuits and clutch 25.

When the clutch 25 is actuated. The closure of the contact 40 drives the disks 26 and 27 or 28. are interconnected.

After the workpiece is rotated at a predetermined angle, the ends of the levers of the switches 29.30 are shifted into semicircular grooves of the disks 27 and 28 and break the motor control circuit. The rotation mechanism stops.

If the duration of the press on the reverse stroke is longer than the cycle of rotation of the workpiece, then the clutch 25 is under voltage and the disks 27 or 28 provide an open circuit for controlling the contacts of the switches 29 or 30.

In the case when the cycle of rotation of the workpiece in time is longer than the duration of the reverse stroke of the upper striker, the coupling 25 is turned off simultaneously with the contact 40, and the unbalanced disks 27 and 28 are turned to their original position. In this case, contacts 29 and 30 are closed and the control circuit is prepared for reclosing.

Automatic movement of the crane to the width of the upper die head to the right or left side of the press. in the following order.

The movement of the crane begins after switching on the contact 42 from the handle 37 of the press. As a result of the contact of Comte 42, Clutch 32 is triggered. The disks 33 and 35 are connected

between themselves. The movement of the crane takes place until the end of the lever

S switch 36 is not compatible with a semi circular slot on disk 35, and the contact will not break the control circuit.

After the opening of the contacts 42 and the switch 36, the coupling 32 is disconnected / hours, the disks 33 and 35 are disconnected. The disk 35 rotates to its original position, the contact of the switch 36 and prepares the control circuit for re-work.

five

When contact 42 remains closed after opening contact 36, the electromagnetic clutch 32 is under voltage, thereby turning the disk 35 and closing contact 36 until the end

0 idle upper striker.

Thus, as a result of the closure of the contacts 39, 40 and 42 from the control handle 37 by the press, the workpiece rises to its original position, rotates by a predetermined angle and moves to the width of the upper striker.

Claims (2)

1. The patent of Germany No. 1961345, class ,. 66 C 13/48, 1976. 2. Authors certificate of the USSR 495269, cl. B 66 D 1/54, 1973 (prototype). 9ia.i but - G-044 14 1GP pg chg (Reg. 2