SU1189793A1 - Limiter of cargo-hoisting crane gripping member stroke - Google Patents

Description

The invention relates to lifting equipment, namely, the height limiters lifting lifting bodies of cranes.

The purpose of the invention is to improve the reliability of the height limiter lifting lifting body of a crane.

FIG. I shows the lifting height limiter of the lifting body of the crane, general view; in fig. 2 - the same, side view.

The lift height limiter of the load-lifting body of the crane is equipped with a limit switch ·

 1, mounted vertically on the base 2, suspended with the possibility of limited vertical and angular movement to the bracket 3, the carrier element 4 for acting on the switch 1. The cronshean 3 is fixed in the lower part of the yoke 5, freely mounted on the axis 6 of the load blocks 7. Brackets 8 for interacting with the cargo cable 9, the weight 10 is carried and suspended on the flexible body 11 to the base 2, _ which by means of the spring 12 is additionally connected to the bracket 3. On the load gripping body

13 crane mounted stop! 4 for interaction with brackets 8.

The angular movement of the base 2 is achieved by its hinged connection with the finger 15 of the bracket 3, the vertical movement due to the slot 16 in the base 2 located between the guides I7 of the finger 15. The switch 1 is connected to the control circuit of the lifting mechanism drive (not shown).

The limiter works as follows.

When lifting the load-gripping body 13, the stop 14 lifts the brackets 8 with the weight 10, while the flexible body 11 is weakened and under the action of the spring 12 the base 2 moves to the bracket 3, as a result of which element 4 acts on the switch 1 and the lifting mechanism of the load-gripping body 13 stops. When swinging the rope 9 due to the yoke 5 and the swivel connection of the base 2 with the bracket 3, the transfer of dynamic forces to the suspension elements of the limiter is eliminated, while the precise operation of the switch 1 is ensured.

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Claims (2)

LIMITER OF LIFTING THE LOADING BODY OF THE LOADING CRANE, containing a limit switch, included in the control circuit of the lifting mechanism drive and placed vertically on the bearing element, the limit switch control element mounted on the bracket located under the axle of the cargo blocks, with which limited vertical and angular displacements can be installed, with limited vertical and angular displacements located under the axis of the load blocks, with a possibility of limited vertical and angular displacements, which can be limited to vertical and angular displacements, under the axis of the cargo blocks, with a possibility of limited vertical and angular displacements, with a possibility of limited vertical and angular displacements, a bracket located under the axis of the load blocks, with a possibility of limited vertical and angular displacements, limited to vertical and angular displacements, limited to the limited vertical and angular displacements, limited to the limited vertical and angular displacements, limited to vertical and angular displacements, limited to vertical and angular displacements, limited to vertical and angular displacements, limited to vertical and angular shifts, limited to vertical and angular displacements. carrier element, a spring fixed between the latter and the bracket, brackets for interaction with the load rope and a flexible body, characterized in that, in order to increase reliability, it is provided with a clip freely mounted on the axis of the cargo blocks, with the bracket fixed at the bottom of § clips, and brackets for interaction with the cargo rope are suspended to the bearing element by means of a flexible body. 511 „1189793 one 1189793 2