SU94349A1 - Walking jib rotary crane - Google Patents

Description

Existing designs of lifting gear and turning devices do not provide the necessary stability of cranes when lifting loads. In the proposed design of the rotary CTpeviOBO of the crane with the sliding running equipment, this disadvantage is eliminated.

In working condition, the crane rests directly on the base plate, and in the transport position it rises together with the base plate and, through the trolley, rests on the support frame of the running equipment. The support frame of the undercarriage equipment and the support plate of the U-turn of the crane are connected to each other by a cable hoist with which the vertical vertical movement of the supports is performed. Moving the crane in the horizontal direction is performed by shaking.

FIG. 1 and 2 are depicted in general, a view of a crane in two projections; in fig. 3 - vertical longitudinal section of the crane; in fig. 4 - support equipment with support krapa on the support frame; pas figs. 5 - scheme of self-loading crane on a car with a trailer; in fig. 6, 7 and 8 - schemes of self-lifting of the crane on the building being erected.

The crane consists of a support frame / (Fig. 3) with wooden supports) bars 2. The support frame elements have a box-section through which the trolley 4 of the crane moves with wheels 3 with the supporting tube 5 fixed in it and a turning circle 6 on which the pivot part 7 of the crane with the boom 8 rests.

On the rotary part of the crane are placed the mechanisms: lifting the load I am changing the reach of the boom 10, rotating the rotary part 11 and the mechanism 12 of the vertical shifting of the support plate.

The horizontal frame moving mechanism J3 is placed on the crane carriage 4, which can be moved by rotating the drum 14 on which the rope 15 is wound, attached with a free end to the base frame /.

No. 94349

Inside the support pipe 5 is placed a pipe 16 with a massive supporting base plate 17 attached to it.

The turning part of the crane has a crossmember 18 with an element 19 suspended from it (Fig. 4) with a rope block 20 fixed on its lower end.

In the pipe 16 also strengthened the cable blocks 21 at the bottom and 22 at the top. The drum 23 of the mechanism 12 for the vertical movement of the support base is covered by several turns of the rope 24, both branches of which bend around the diverting blocks 25 (Fig. 3), the upper blocks 26 at the cross member 18 and go one by one to block 21 (Fig. 4) of the support plate, and the second on the block 20 of the element 19 and the blocks 22 of the pipe base plate. Both ends of the rope 24 come together and fasten to element 19. In this scheme, two interlock chains are interconnected: one between the end of the element 19 and the bottom of the pipe 16, the second between the end of the element 19 and the top of the pipe 16, allowing the base plate to move 17 and pipe 16 with a crane relative to the pipe 5 and the support frame with the trolley.

When the drum 23 is rotated in one direction, the crane will lift relative to the base plate 17; when the drum 23 is rotated in the opposite direction, the crane will be lowered relative to the base plate 17, which, when the ground frame touches the ground, will rise to the base plate relative to the base frame.

In order to move the crane to a new job, the mechanism 12 for the vertical movement of the base plate and the mechanism 13 for the horizontal movement of the support frame are used jointly.

The crane is raised on the support plate 17, the support frame / mechanism 13 moves to the extreme position relative to the crane, rolling on the wheels 3 of the truck 4 of the crane. Then, the support frame / is lowered by the mechanism 12 to the ground, and the support plate 17 is raised, the crane car 4 moves along the support frame / mechanism 13 to the extreme position, and the crane is raised again on the support plate 17.

With such advances (walking), the crane moves in a horizontal direction.

When the crane is supported on the ground by the support frame /, the turning part 7 of the crane together with the pipe 16 and the base plate / 7 is rotated relative to the pipe 5 by the mechanism //.

When the crane is supported on the ground by the base plate 17, the support frame / together with the crane truck 4 and the pipe 5 is rotated by the AND mechanism relative to the base plate 17 and the pipe 16, which makes it possible to move the crane in the desired direction.

In order to ensure the movement of the crane, the electric motors of the mechanisms for the vertical movement 12 of the base plate and the horizontal movement 13 of the support frame are interlocked with each other using switches.

The presence in the crane of a vertical frame mutually moving in a vertical direction and a base plate allows the crane to be self-loaded onto vehicles, as well as a crane self-lifting from the floor to the floor of the building being erected.

To self-load the crane on the vehicle (Fig. 5), the crane is raised on the support plate 17, and a car with a trailer is brought under the support frame; loading of the crane is carried out by lowering the support frame / on the car with the subsequent lifting of the support plate.

To self-lift the crane over the building (Fig. 6-8), the crane is installed near the wall of the next floor (Fig. 6) and rises onto the base plate (Fig. 7), after which the support frame is moved to the extreme upper position. A support stand 27 is brought under the support frame, the crane moves along the frame / wall of the building and is mounted on the support plate / 7 for operation, and the support stand 27 is removed (Fig. 8).

Subject invention

Claims (5)

1. A walking jib rotary crane with a chassis device incorporating a support frame that is variable-resting on the ground in the process of movement, longitudinally movable by means of a winch and cable transmission, and in order to achieve greater stability and maneuverability of the crane , the supporting frame is connected with the fixed part of the wound, and the supporting axle located along the axis of rotation of the crane and connected to the column of the rotating part by means of rope polyspasts is used as a vertical element of the movable element aza (stove). 2. The form of the crane under item 1, characterized in that, with the aim of the possibility of vertical movement of the support base (plate) relative to the support frame and the support frame relative to the support base (plate), two interconnected oppositely acting cable polyspast, end branches of the ropes of which are wound onto the winch drum in opposite directions. 3. The form of the crane no pi. 1 n 2, characterized in that, in order to automate the process of its movement, the electric motors of the mechanisms for the longitudinal movement of the support frame and the vertical movement of the support base (plate) are interlocked using limit switches. 4. Method of loading the crane on PP. 1-3 for a car when it is transported over a long distance, characterized in that the crane is driven out on a support base (plate), followed by a winding under the support frame on both sides of the car and the irish. 5. A method of vertical movement of a crane in PP, 1-3 from the floor to the floor of a building of a building, characterized in that the crane is emitted on the supporting base (slab) with the subsequent displacement of the supporting frame and supporting it with one side to the upper floor and the other side on the extra rack. - 3 -Ns 94349 00 and : uh 00