SU761416A1 - Arrangement for power supply to triple-section crane boom - Google Patents

Description

The invention relates to the field of lifting and transport machinery, in particular to devices for supplying energy to the boom of the crane and can be used on the crane with three-section booms.

A device for supplying energy to a three-section crane boom is known, which contains a flexible energy carrier and a block (1].

It is also known a device for supplying energy to a three-section crane boom containing a flexible energy carrier, a rod, pulleys covered by a flexible coupling and mounted by means of axles on the rod, as well as brackets that are fixed respectively on the fixed and end sections of the boom and connected to the flexible coupling '[2 ].

A disadvantage of the known devices is the limited functionality.

The purpose of the invention - expansion of functionality.

This goal is achieved by the fact that the device is equipped with a block located on the axis of the rod, and slats with a longitudinal notch fixed on the intermediate section of the boom, while the rod is provided with angles located in the longitudinal notches of the slats, and the flexible energy carrier is connected to the front end of a fixed

ten

15

20

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thirty

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the boom section is connected to the unit and fixed on the end section of the boom.

FIG. 1 shows a general view of the device when the boom sections are folded; in fig. 2 - device with extended boom sections; in fig. 3 - section A — A of FIG. 2

A device for supplying energy to the three-section boom of the crane contains a flexible energy carrier 1, which is connected to the front end 2 of the fixed boom section 3, is connected to the block 4 and is fixed to the boom end section 5. On the rod 6, provided with angles 7, pulleys 9 are located on the axes 8, covered by a flexible coupling 10. Unit 4 is installed on the axis 8 of the rod 6.

The brackets 11 are fixed respectively on the fixed and end sections 3 and 5 and connected to the flexible coupling 10. The strips 12 with the longitudinal notch 13 are mounted on the intermediate section 14. The corners 7 are located in the notches 13 of the strips 12 (in Fig. 1 and 2, conventionally the diameter block 4 is shown larger than the diameter of the pulley 8).

The device works as follows.

When the boom sections are folded, the boom 6 is located within the intermediate section 14. When section 5 extends, the bracket 11 pulls the link 10 and re | ·· * '.4 _g ”,

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pushes the bar 6. In this case, the bar 6 moves by an amount equal to half the amount of movement of section 5. As a result, the length of energy carrier 1 is chosen equal to the amount of movement of section 5, and the tension of energy carrier 1 remains the same.

With further increase in the length of the boom together with section 5, section 14 extends as well. Due to the corresponding movement of unit 4, energy carrier 1 remains taut.

If, when the boom length is reduced, section 5 moves before section 14, the connection 10, which moves the rod 6, and block 4, to the right, is tightened, while the tension of energy carrier 1 remains the same.

If in the process of reducing the length of the boom section 14 ahead of section 5, the tension of the energy source 1 does not change.

Claims (1)

Claim A device for supplying energy to a three-section boom of a crane, containing a flexible energy carrier, a rod, pulleys covered by a flexible coupling and mounted by means of axles on the rod, and also brackets, which are fixed respectively on the fixed and end sections of the boom and connected by a flexible coupling, distinguished by that, in order to expand the functional properties, it is equipped with a block located on the axis of the rod, and with slats with a longitudinal notch fixed on the intermediate section of the boom, while the rod is provided with corners, in the longitudinal notches of the slats, and the flexible energy carrier is connected to the front end of the fixed boom section, connected to the unit and attached to the end section of the boom.