SU870352A1 - Device for hoisting and lowering long structures - Google Patents

Description

The invention relates to hoisting and transport machinery and can be used directly for tilting long structures, mainly bodies of revolution, of various shapes and sizes and laying them in a horizontal position with the protection of the outer surface from damage during their manufacture, control and testing.

A device for raising and lowering long structures is known, comprising a vertical strut mounted on a foundation on which horizontal guides with a freight trolley moving along them are located.

A disadvantage of the known device is its low reliability.

The aim of the invention is to increase reliability.

This is achieved by the fact that the trolley is equipped with a cradle rotatable in a vertical plane with a latch for its position relative to the trolley and with removable cups to maintain a long structure: while the vertical rack has guides with a traverse moving in them connected to a long structure.

Figure 1 shows a device with a structure located in a horizontal position; figure 2 - device with a structure located in an upright position; Fig. Zvid A in Fig. 1: in Fig. 4 is a section bB in Fig. 1.

The device consists of a freight trolley 1, on which a cradle 2 rotatable in the vertical plane is mounted, and the axis of rotation of the cradle is offset from the longitudinal axis of the structure. A freight trolley 1 is mounted on horizontal guides 3 laid on a foundation 4 and having an inclined section. Between the inclined section of the horizontal rails 3 and the truck

I, a supporting trolley is located 5. At the slope of the horizontal guides, racks 6 with vertical guides 7 are installed to give the elevators the lifting beam 8. On the foundation 4. there is a traction winch 9 with a torque clutch (not shown), adjusted to move only the freight trolley 1, with swivel cradle 2, but without construction. Traction winch 9 is used to move the empty cargo truck 1 and hold it on an inclined section of the guides 3 by a rope 10 wound on a winch drum. On the pivot cradle 2, for installing the structure 11 of various sizes while maintaining the longitudinal axis at a constant level from the pivot axis, removable cups 12 of variable length are provided, the supporting surface of which has a shape and material corresponding to the canting structure 11. To hold the cradle in a predetermined position -. There is an automatic lock 13 for the trolley.

The device is barely working. blowing way.

Carts 1 and 5 with mounted cups 12, corresponding to the diameter and shape of the canting structure, the winch 9 are installed so that the head of the structure 11 is in the plane of the uprights 6, and the swinging cradle 2 is against the supporting part of the canting structure 11. The cradle 2 is deployed in a vertical plane for receiving stackable structure

II and the latch 13 is fixed in -, this position. The laid-down structure 1 1 is connected to the cross-beam 8. After laying the supporting part of the structure in the cradle 2, the latch 13 automatically disconnects the cradle from the frame of the cargo trolley 1.

The hook of the crane crosshead 8 rises, moving along the vertical guides 7 strictly vertically:

When lifting the structure 11, the freight trolley 1 moves by turning the cradle 2, the rope 10 attached to the trolley rotates the drum of the winch 9, which is disconnected from the drive by the limit · torque coupling. The raised structure is transported to the vertical position as intended, the trolley 1 with a swivel cradle 2 remains on the inclined section of the horizontal ₅ rails 3 and is kept from rolling off by the rope 10.

When moving the structure from a vertical position to a horizontal 10, a freight trolley 1 is installed at the rack 6 on an inclined section of horizontal guides 3 and is kept from rolling off by a rope 10j, the cradle 2 is deployed and fixed, 15 as shown in Fig.2. To orient the inclination of the structure 11, its axis is offset relative to the axis of rotation of the swivel cradle 2. When the structure 11 is supported by the swivel cradle 2 20, the latch 13 automatically disconnects the swivel cradle 2 from the frame of the trolley. The gravitational force, which tends to move the trolley along an inclined section of the path, increases due to the mass of the structure, causing an additional torque on the winch shaft 9 that exceeds the moment of the clutch of the limiting moment, due to which the freight trolley 1 with structure 11, when lowering 30, will begin to move first due to the slope paths, and then due to the horizontal component of the force of gravity. The trolley 1 moves until the design is completely transferred from a vertical to a horizontal position.

I

The device allows raising and lowering of long structures without damaging the outer surfaces with a guaranteed direction of the structure when lowering and without braking and jerking when moving it to a vertical position.

Claims (1)

1. USSR author's certificate No. 521217, yut. In 66F 11/02, 1976 prototype). Y 12 h -r / 3 Phage