SU1242595A1 - Platform for repairing boilers of power units - Google Patents

Description

This invention relates to the power industry, in particular, to the repair of energy blocks.

The purpose of the invention is to increase the reliability of the platform, improve the conditions of work, control the winch, reduce the number of required equipment.

FIG. 1 shows a platform, a general view; in fig. 2 - the same, top view; in fig. 3 - the scheme of ropes storing.

The platform contains a frame 1, made in the form of a contour frame, with flooring 2 and barriers 3, suspended from cables A and 5 connected to traction winches 6, safety chains 7, retractable fixers 8, support rollers 9, wall-guides Yu, stop screws 11, rope fastening units 12, supporting beam 13 with balancers 14 mounted on it, deflecting blocks 15, equalizing blocks 16, lugs 17 ..

The frame 1 of the platform consists of a system of beams and trusses interconnected, on which the individual shields of the flooring 2 are laid.

The platform is moved with the help of two winches 6, the cables 4 and 5 of which form four hanging branches, going from the winches to the nodes 2 of the attachment.

When loosening the overhead rope, the platform may hang on the safety chains x 7, the latches 8 move out after lifting the platform to the working level and are removed before moving the platform. The skew of the platform is eliminated due to the support rollers 9, which are installed in pairs on both sides and rolling along the walls 10 of the guides 10.

The device works as follows.

The platform with flooring 2, operated by winches 6, hangs freely on the ropes, while loosening which can hang on the safety chains 7. Sliding clamps 8 serve to transfer the load on the safety chains, which are raised after lifting

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on the platform to the working level and removed before moving it.

With an unbalanced load, the platform deviates relative to the hinge at a certain angle and is set in an equilibrium position. When the platform is tilted to the limit, support rollers 9 come into play, which rest on the guiding walls and roll over them as the platform moves. To prevent falling from the platform, serve as barriers 3 and to fix it in the working position — stop screws 11,

The hanging ropes form two movable 4 and two fixed 5 branches extending from the winches and fixed in the nodes 12. The load on the ropes is transmitted through the carrier beam 13, the balance members 14 pivotally mounted on it, deflecting the blocks 15 along the edges. Ropes, passage through blocks 15 and equalizing blocks 16 rotate them, moving the platform.

In this case, the bapancy devices 14 do not change their position if the winches' speeds are the same. If the speeds of the winches are different, the balancers turn a certain angle relative to each other at 0, compensating for the different lengths of the ropes 4 and 5, choosing slack and ensuring their equal tension.

With the cross position of the balancers 14, the platform does not change its position in equilibrium. Compared to the average winch speed, the speed of the platform 1 is halved, and the lifting capacity of each winch is correspondingly doubled.

The load from the platform is transmitted to the unbooted beam 13 by means of lugs 17 fixed to the frame beams.

In the event of a failure of one of the winches, the balancers 14 are set to the vertical position and the platform is lowered by one winch. Faulty winch at the same time should be disinhibited.

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VNIIPI Order .3673 / 30 Circulation 718 Subscription Proizv.-polygr. pr-tie, Uzhgorod, st. Project, 4

Claims (1)

PLATFORM FOR REPAIR OF BOILERS OF POWER BLOCKS, comprising a frame with a deck and fences, suspended from cables connected to the traction drive, safety chains, retractable latches and track rollers mounted on the sides of the frame for interacting with the walls of the boiler, characterized in that the purpose of increasing the reliability of the suspension and simplifying maintenance Figure 1, it is equipped with a supporting beam with. with two swing-mounted balancers on it, the frame is made in the form of a horizontal frame, and the carrier beam is fixed with the ends on the opposite sides of this frame along the horizontal axis of its symmetry, equipped with suspended deflecting blocks that are mounted at the ends of the balancers, and two leveling blocks installed in the center of the carrier beams, while each cable is made with the possibility of fixing on the boiler head and is stored through the corresponding deflecting unit on one of the balancers, through one of the equalize blocks and through a deflecting block placed on another balance beam diagonally above SU „„ 1242595