RU2791756C2 - Floating crane - Google Patents

Abstract

FIELD: lifting equipment.

SUBSTANCE: floating cranes. The crane contains several booms mounted on a displacement hull, as well as a lifting mechanism. The latter includes several power hydraulic cylinders interacting with the booms, and load-carrying elements made in the form of several longitudinally connected links from multi-row sleeve chains connected by transverse axles directly interacting with the heads of these booms.

EFFECT: development of quarries filled with water without the use of mining dump trucks.

3 cl, 2 dwg

Description

The invention relates to lifting equipment, and in particular to floating cranes.

All types of existing hoisting cranes, and floating ones in particular, use steel cables in hoisting mechanisms. And they become an obstacle to the growth of their carrying capacity (the diameter of the cables increases, the number of pulleys in the chain hoists, the size of the winding drums, etc.). In addition, due to their wear and tear, they are not suitable for long-term continuous operation (with a large load capacity).

The aim of the invention is to create a lifting mechanism for floating cranes without the use of steel cables.

This goal is achieved by the fact that in a floating crane containing several arrows mounted on a displacement body, as well as a lifting mechanism, according to the invention, the lifting mechanism includes several hydraulic power cylinders interacting with several arrows and load-carrying elements made in the form of garlands longitudinally connected links from multi-row sleeve chains and connected by transverse axles for direct interaction with hooks on the heads of these arrows. In this case, three parallel arrows are used, the middle of which is stationary, and the two extreme ones can move in a vertical plane. And the chain links are connected by transverse axles having open sections for interaction with hooks on the arrowheads, with the lower link attached to the cargo container with a hopper unloading system.

In FIG. 1 shows the device of a floating crane operating in a water-filled quarry (option). In FIG. 2 shows the docking unit of chain links.

The floating crane (hereinafter PC) consists of a displacement body 1 with a propulsion unit 2, in the front part of which three booms 3, 4, 5 are installed in parallel. The middle boom 4 is stationary, and the extreme ones 3 and 5 can swing in a vertical plane. Arrows 3 and 5 are moved in a vertical plane by hydraulic cylinders 6. On the heads of all arrows 3, 4, 5 there are hooks 7. A garland of links of multi-row sleeve chains 8 connected by transverse axles 9 is used as a load-bearing element. The lower link 8 is attached to the cargo container 10. A pair of rubberized rollers 11 is installed on boom 4 for idle pulling of a garland of chain links 8. All crane mechanisms not mentioned above and ballast weight (not shown) are located in the stern of the vessel 1. All arrows 3, 4, 5 are mounted on the mast 12. To attach the links 8 to the axes 9, bushings with lugs 13 are used.

The PC operates in the following way. Collected on a water-filled quarry (option), it lowers to the bottom on a garland of chain links 8 moving along the boom 4 a cargo container 10 to fill it with mined rock (a robotic underwater rotary excavator and an intermediate loading hopper are not shown). In this case, the hook 7 on the head of the boom 4 is removed (the cleaning mechanism is not shown), and the garland is braked by rollers 11 operating in the mode of electric generators. Further, booms 3 and 5 are set in motion with the help of hydraulic cylinders 6 and lower the arrowheads to the nearest axis 9 and grab it with hooks 7 in zones "A" and "C". After that, the hydraulic cylinders 6 lift the boom heads 3 and 5 until the upper axle 9 sits on the hook 7 of the boom head 4 in zone "B". When this is released from the load links of the chains 8 move longitudinally along the boom 4 rollers 11 with subsequent laying in a container in the hull 1 (not shown). The process is repeated until the lower axle 9 of the garland of chain links 8 is captured by the hooks 7 of the arrows 3 and 5. The loaded container 10 is lifted to the maximum height above the water by the hydraulic cylinders 6 and the PC is moved to the shore by the propulsion unit 2 (option - the edge of the quarry) for unloading . Then the PC returns to its original position

PCs made according to this scheme will allow the development of quarries (option) after filling them with water without the use of expensive and difficult to maintain mining dump trucks, and will also make the rest of the mining equipment operating under water practically weightless (due to the use of ballast tanks). And modern computer technology will make this water / underwater technology practically deserted.

Claims (3)

1. Floating hoisting crane containing several arrows mounted on a displacement body, as well as a hoisting mechanism, characterized in that the hoisting mechanism includes several hydraulic power cylinders interacting with several arrows, and load-carrying elements made in the form of garlands of longitudinally connected links from multi-row sleeve chains and connected by transverse axes for direct interaction with the hooks on the heads of these arrows. 2. The crane according to claim 1, characterized in that three parallel booms are used, and the middle of which is stationary, and the two extreme ones can move in a vertical plane. 3. Crane according to claim 1, characterized in that the links of the chains are connected by transverse axles having open sections for interaction with hooks on the arrowheads, and the lower link is connected to a cargo container with a hopper unloading system.

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