SU144270A1 - Gripping device for single winch cranes - Google Patents

Description

Frame type grippers are known with automatically turning pickups to single beam wagon cranes for cargo (mainly lumber in bags on linings).

The described device differs from the known ones in that its frame is provided with fixed two-slotted sleeves located at the corners, in which the L-shaped rods vertically move with a 90 ° rotation. The rods have helical grooves along which the coupling clutches move under the weight of the frame. The gripping device of the proposed design provides automation of the processes of gripping and uncoupling the cargo. In addition, to ensure simultaneous rotation of the L-shaped rods, the latter are connected by a flexible link with a spring-loaded additional frame-traverse.

FIG. 1 shows an L-shaped bar with a fixed two-pin clutch with a transverse section; in fig. 2 - gripping device in four intermediate positions when lifting a load.

The gripping device is made in the form of a frame / box-shaped form, in the corners of which four two-pin couplings 2 are fixedly fixed with pins 3 turning around a horizontal axis. In the sleeves, the L-shaped rods 4 vertically move and rotate around the vertical axis, the lower ends of which are made in the form of conical supporting points and are equipped with trailing arms 5 for placing the load. On the cylindrical surface of each rod, two identical, symmetrically located with respect to the axis of the rod, systems of guide grooves 5, 7, 8 9 with spring-loaded guide stops 10, 11, 12 and 13 were milled. On the guide grooves slide pins 3 couplings 2. Above grooves on the rods 4 are located thrust piles 14, transmitting the weight of the cargo from the rods to the frame 1 and through the hinge rods 15 to the hook of the crane 16. Top number 144270-- 2

with their ends, the rods are fixed in angular contact bearings / 7, the outer cages of which are fastened in an additional frame 18, rigidly connecting the rod to each other. The frame-traverse is filled with holes for the passage of the guide rods 19 welded to the frame. Springs 20 are mounted on the rods, designed for full compression of the total weight of the gripping rods 4 and the frame-traverse 18. At the ends of the rods 4 protruding above the traverse frame, two star-gears 21 of the chain drive are fixedly mounted, which interconnect all the gripping rods, ensuring their synchronous rotation regardless of whether they all touch the base.

The guide screw grooves 6 rotate the rods 90 ° around the vertical axis when the load is seized, the longitudinal grooves 7 provide vertical movement of the pins when lifting the load, the helical grooves 8 rotate the gripping rods to the original position for releasing the cargo and the longitudinal grooves 9 move the vertical pins when withdrawing the gripping device.

The position / gripper is under load. The levers 5 rods 4 are located along the load. The pins 3 of the clutches 2 are located in the upper part of the grooves 6. In the polishing // the gripping device is lowered onto the package of cargo. Bars 4 with conical bearing points abut the base. The frame / is lowered under the action of its own weight, and the pins of the 3 clutches, slip along the helical grooves (), rotate the rods by 90 °, plant the hitch arms under the load. In the position /// of the frame / rises, the pins 3 slide along the longitudinal grooves 7. The frame / reaches the stop shoulders 14. In the position IV, the load is lifted.

At the conclusion of the Siberian Institute of Technology, the gripping device of the proposed design is recognized to be operable, ensuring the automatic execution of operations of capturing and uncoupling rectangular shaped cargo on the linings.

Subject invention

Claims (2)

1. A gripping device for single winch cranes for cargo, mainly lumber in packages on pads, of frame type, equipped with automatically swiveling pickups, characterized in that, in order to automate the process of gripping and uncoupling the cargo, its frame is fitted at the corners with fixed two-pin couplings, which vertically move with a rotation of 90 ° L-shaped shtangi, having longitudinal, spiraling-down vertical grooves along which the coupling pins move under the action of the weight of the frame. 2. The gripping device according to claim 1, characterized by (m, that in order to simultaneously rotate the l-shaped rods, the latter are connected by a flexible link with a spring-loaded supplementary traverse frame. FIG I 1 Polon, L / Position