SU960418A1 - Hoist for assembling derricks - Google Patents

Description

The invention relates to the field of equipment for deep drilling of oil and gas wells, in particular to equipment for assembling tower derricks.

Known elevator for the assembly of towers, containing interconnected support frames, paired racks with shoes and head caps, connected by upper and lower belts and flexible diagonal braces, tackles, with movable blocks of which are connected two traverses with freely installed supporting pipes, to which The 15 towed tower [1] is suspended.

The disadvantage of this elevator is the considerable time required for its installation due to the rigid connection of the racks with the support frames, the need for 20 use of hoisting machines and climbing work. .

The closest in technical essence and the achieved result, _ to the proposed is a lift for the assembly of towers, containing support frames connected by lower and upper belts and diagonal, braces, paired racks with headrests and shoes, the last of which **

which are articulated with support frames, tackles with movable and fixed blocks and two traverses with bearing pipes connected with the Moving blocks (2) -.

A disadvantage of the known lift is its low mounting ability and transportability, associated with a large number of connecting elements and with significant longitudinal dimensions of the lift in the dismantled form, which requires a significant investment of time on the preparation of transport routes and the installation site. >

The aim of the invention is to increase the mounting ability and transportability of the lift by reducing the dimensions in the transport position.

This goal is achieved by the fact that the racks on each supporting frame relative to its longitudinal axis are mounted with an offset to rotate in a plane perpendicular to the longitudinal axis of the elevator, while the supporting racks and headrests of the racks are equipped with latches for interaction with each other in the transport position.

Claims (2)

FIG. 1 shows a lift, side view; in fig. 2 is a plan view of FIG. 3 view A in FIG. 1. The elevator for assembling the towers consists of two support frames 1 and 2, on which two shoes are mounted in pairs, connected to the frames of the hinge 4. Two pipes are inserted into each shoe 3, which form a twin stand .5 with head covers 6. Support “are connected by themselves 7, fixed to the shoes 3, and the caps 6 of the paired racks 5 of raglg 1 are connected by themselves 8 with the caps of the paired two pavtt 2, the rigidity of the elevator is secured. flexible diagonal sticks to rigid struts 10, the lower ends of which are fixed on supporting frames 1 and 2. On the head restraints 6 there are fixed blocks of polyspasts 11, the moving blocks of which, with their Hanp pipes, slide along the supports 5 when moving the traverse 12 associated with the movable blocks of the polyspasts 11. On the cross bar 12, pipes 13 are freely installed, to which the assembled tower is suspended. The lifting rope 14 of the polyspasts 1 goes through the guide blocks 15 to the drum of the winch 16 or to the traction tractor. The headboards of the twin stekles are provided with clamps 17, which are intended for; interactions with the latches 18 located on the supporting frames 1 and 2. The elevator operates as follows. Take off the lifting cable 14, razosnascha polyspasts.11 and wind the rope on the winch drum 16 or in the bay. The movable blocks of the polyspasts 11 are fastened to the shoes 3 are paired racks 5. They remove the pipes 13 and the traverse 12. Disconnect the lower ends of the struts 10 from frames 1 and 2 and fix them to the shoes 3 of the corresponding stands 5. They remove the flexible diagonal braces 9 and Sa 7 and 8 (if the lift is disassembled after disassembling the tower, i.e. there are no lugs inside the lift, the operations for removing the diagonal braces 9 and 7 to 8 are carried out after laying the panel formed by the stands 5, diagonal by braces 9, and by themselves on the support frames. Then, the paired racks 5 seconds heads 6, shoes 3, movable and fixed blocks of the polyspasts 11 and struts 10 are alternately lowered onto the support frames 1 and 2, turning them around the hinges 4, which ensure rotation of the uprights 5 only in the plane perpendicular to the longitudinal axis 19 of the elevator. by means of clamps 17 and 18, they are fixed on the support frames 1 and 2. The lift is assembled in reverse order. Thus, the lift is inserted into the structure. The support frames 1 and 2 with articulated joints with them are shoes 3, paired racks 5, displaced each about With respect to a friend, it makes it possible to combine the main units of the hoist-shoes, racks, head covers, blocks of polyspasts, struts, board and guide blocks (32 nodes in total) - into two blocks, significantly reducing the time of the preparatory installation of the hoist, improving its conditions transportation and storage. Claim 1. The elevator for assembly of towers, containing support frames, connected by lower and upper rims and diagonal braces, twin racks with caps and shoes, the latter of which are pivotally connected to the support frames, poly.pastes with mobile and fixed blocks and sv Two crossheads with carrier tubes, which are mounted with movable blocks, are characterized in that, in order to increase the efficiency and transportability of the hoist by reducing the dimensions in the transport position, the stands on each support The first frame with respect to its longitudinal axis is installed with an offset with the possibility of rotation in a plane perpendicular to the longitudinal axis of the elevator. 2. A lifter according to claim 1, about a t. L. And the fact that the support ramles and headpieces of the junction are provided with fasteners for interacting with each other in the transport position. Sources of information accepted. In the attention during the examination 1.Denisov P.G. The construction of drilling M, Nedra, 1974, p. 104-105. . 2. USSR author's certificate number 836334, cl. E 21 V 15/00, 1979 (prototype). G / I, Fl. I