SU1284931A1 - Cargo-gripping device - Google Patents

Abstract

This invention relates to vacuum handling devices. The aim of the invention is to increase reliability in operation. The load gripping device comprises a yoke 3 formed by interconnected pneumatic cylinder bodies, the pistons 4 of which face each other, the rods 5 are rails, and the piston cavities are connected by a line with cavities of vacuum grippers 1. On the yoke on one spring-loaded axis 8 are fixed the drum 9 and the gear wheel 7. The slings 11 attached to the lifting mechanism are attached to the drum with their ends alone. Lifting device is lowered onto the product. The pistons 4 move closer and force air out of the piston space into the atmosphere through a non-return valve. The valve 15 is brought to the “gripper” position, while the vacuum grippers are connected to the piston space. When lifting, the cables 11 unwind from the drums 9 and rotate the gears 7. The pistons 4 are moved apart. A vacuum is formed between them and the product is seized. After transportation, the product is installed in a certain place, the crane 15 is moved to the position released and the product is released from vacuum grippers. 2 Il. I joint venture

Description

1C

CX

oo

to

° / o / o / o / o / o ° / ° / ° / ° / ° / ° / o / ° / ° / ° / o / o /

/ 0/0 / / 0 / / o / o / o X ° / ° X ° / ° / ° / o / ° / o / ° / °

1

15

The invention relates to lifting machinery, namely, to safe vacuum load handling devices, and can be used primarily for capturing and transporting piece goods having a rough surface and a porous material structure.

The purpose of the invention is to increase the reliability of the device.

FIG. I shows the proposed device installed on the product being lifted, general view; in fig. 2 - the same, when transporting the product.

The load gripping device contains vacuum grippers 1 attached by means of articulated spring-loaded struts 2 to a tubular supporting cross member - beam 3. The vacuum-forming mechanism includes beams 3 fitted with pipes 4 with rack and pinion rods 5, which are located between the guide 6 and the toothed drive wheel 7. The latter is planted on a common axis 8 with a drum 9. On the drum 9, on one side of the gear wheel 7, is attached the end of the return coil spring 10, and on the other, the lower end of the lifting cable 11. The second end is coiled the spring 10 is attached to the frame of the carrier beam 3. The lifting cable 11 in the upper part is transferred through the lifting mechanism block or attached to the hook of the lifting mechanism (not shown).

A non-return valve 13 is installed to communicate the interpiston space 12 with the atmosphere in the center of the tubular load of beam 3, and a three-way valve 15 is connected to connect the vacuum grips 1 to the inter piston space or 35 atmosphere between the tubular support beam 3 and the collector 14 is connected to the vacuum grips 1 with hoses 16. Guide 6 lath rod 20

thirty

they are connected to the interpiston space 12 and the lifting of the device begins with the help of a lifting mechanism. The lifting cables 11 unwind from the drums 9 and rotate the gears 7, which push the pistons 4 through the pinion rods 5. Between the pistons 4 a vacuum is created and the product is seized. The pistons 4 are moved apart until the force created by the pressure difference in the interpiston space 12 and the atmospheric pressure is equalized by the weight of the device and the lifted product. After this, lifting of the product begins. The pistons 4 are slowly moved apart by the air penetrating the vacuum grippers 1 through the well space of the product or through the joint of the sealing of the vacuum grippers with the rough surface of the product.

The dimensions of the tubular carrier beam 3 are selected with the calculation of the safe conduct of all lifting and transport operations.

After transportation, the product is installed at the designated place and freed from the vacuum grippers 1 by moving the three-way valve 15 to the position. At the same time, releasing the connection of the vacuum grippers 1 and the interpiston space 12 is closed, the atmospheric air enters the vacuum grippers 1 where the pressure is compared with the atmospheric one, and the product is released .

Further, the cycle of operation of the device is repeated.

Claims (1)

Claims of the invention: A load gripping device, mainly for coarse and porous products, containing vacuum grippers attached to the cross bar and a vacuum-forming mechanism including horizontal pneumatic cylinders, the piston cavity of each 5 is simultaneously the limiter. stroke 4 The device works as follows. Lifting device lowered cavities of the vacuum grippers, and a drive for moving the rods, kinematically connected to the slings for hanging on a lifting mechanism, characterized by vacuum grippers 1 raised by the fact that, in order to increase reliability. product. The pistons 4 approach each other by the force created by atmospheric pressure and the force of the return spiral springs 10, and in the final stage of the stroke displaces the air from the interpiston space 12 to the atmosphere through the non-return valve 13. The lower 50 ends of the lifting cable 11 are placed on the drums 9. To grip and lift the product, the three-way valve 15 is set to the “Grip” position, with the vacuum grippers 1 the yoke is formed by pneumatic cylinders connected between the bodies, the pistons of which face each other and the rods of which are gear racks, while the movement drive of each rod includes a drum and a gear wheel connected to the teeth mounted on the body on a common spring-loaded axle through a spiral spring. slats, and the ends of the straps attached to the drums. five 0 0 they are connected to the interpiston space 12 and the lifting of the device begins with the help of a lifting mechanism. The lifting cables 11 unwind from the drums 9 and rotate the gears 7, which push the pistons 4 through the pinion rods 5. Between the pistons 4 a vacuum is created and the product is seized. The pistons 4 are moved apart until the force created by the pressure difference in the interpiston space 12 and the atmospheric pressure is equalized by the weight of the device and the lifted product. After this, lifting of the product begins. The pistons 4 are slowly moved apart by the air penetrating the vacuum grippers 1 through the well space of the product or through the joint of the sealing of the vacuum grippers with the rough surface of the product. The dimensions of the tubular carrier beam 3 are selected with the calculation of the safe conduct of all lifting and transport operations. After transportation, the product is installed at the designated place and freed from the vacuum grippers 1 by moving the three-way valve 15 to the position. At the same time, releasing the connection of the vacuum grippers 1 and the interpiston space 12 is closed, the atmospheric air enters the vacuum grippers 1 where the pressure is compared with the atmospheric one, and the product is released . Further, the cycle of operation of the device is repeated. The claims Lifting device, preferably for scherohovatyh and porous articles comprising a crosspiece fixed to the vacuum grippers and vakuumoobrazuyuschy mechanism comprising horizontal cylinders, piston cavity kazhpolost mi of vacuum grippers, and the actuator movement schtokov kinematically coupled with straps for attaching to a lifting mechanism, characterized  in order to increase reliability. the yoke is formed by pneumatic cylinders connected between the bodies, the pistons of which face each other and the rods of which are gear racks, while the movement drive of each rod includes a drum and a gear wheel connected to the teeth mounted on the body on a common spring-loaded axle through a spiral spring. slats, and the ends of the straps attached to the drums. 0UZ.Z