SU1009981A1 - Bridge crane - Google Patents

Description

The invention relates to lifting and transport machinery, and in particular to designs of bridge cranes with auxiliary devices, in particular with devices for servicing the zone of a blast furnace.

A bridge crane is known, which includes a traveling mechanism, a trolley with its movement mechanism and a sliding console carrying a lifting mechanism. The disadvantage of the known crane is the inability to maintain the zone of the blast furnace due to the location of the console along the bridge crane paths.

The goal of the invention is to expand the service area of the crane, improving reliability and safety in operation.

The goal is achieved by the fact that in a bridge crane containing a movement mechanism, a cargo trolley with its movement mechanism and a sliding console carrying a load-lifting mechanism, the sliding console is made of two sections, the first of which is kinematically connected with the cargo trolley, and to the mountain. the load-lifting mechanism is suspended, and it is pivotally connected to the first one with the possibility of rotation relative to it in the horizontal plane, and the crane is equipped with a signal system that includes a limit switch, interacting s from the second section of the console and associated with a mechanism moving the cargo crane trolley and the console is provided with a return mechanism of the second section to the starting position.

In addition, the mechanism for returning the second section of the console to the initial position is a rocker mounted on the second section with rollers interacting with a spring-loaded cross member mounted on the first section of the console.

Fig, 1 schematically shows a bridge crane, a general view; in FIG. 2, node I in FIG. 1; in fig. 3 shows section A-A in FIG. 2; in fig. - type B in FIG. 2

Bridge crane 1 contains a moving mechanism, a cargo trolley 2 with its movement mechanism and a guide 3, a sliding console made of two sections, the first C of which is kinematically connected with the direction of the trolley, and to the second 5 under 09981

The load-lifting mechanism 6 is hung, and it is connected to the first one by means of a hinge 7 with the possibility of rotation relative to it in the horizontal plane. The crane is equipped with a signal system that includes a limit switch 8, which interacts with the ruler 9 of the second section of the console and is associated with the mechanism for moving the crane truck. The console is provided with a mechanism for returning the second section to the initial position, which is a rocker arm 10 mounted on the second section with rollers 11 interacting with a spring-loaded cross member 12 mounted on the first console section.

The bridge crane works as follows. .

20 j If it is necessary to transport cargo to the hearth of a blast furnace, the mechanism for moving the bridge crane is activated to be installed in the required

place

25 Then, the cargo carriage 2 takes up the required position above the cargo located on the floor of the casting yard and the load-lifting mechanism 6 of the section 5 of the extendable console is activated. Starters and lifts the load. Further, the bridge crane moves towards the hearth of the blast furnace, remaining in an extreme position. The console drive turns on when

2J this section C moves along the guide 3 of the trolley 2, transporting the load to the desired area of the hearth. Then the lifting mechanism 6 is turned on and unloading is performed,

In case of a collision of the second section 5 of the extendable console to the obstacle, this section is rotated relative to section k due to the hinged connection of these sections. In this case, the yoke 10 by one of the rollers 11 acts on the yoke 12, pressing the spring 13. Simultaneously, the ruler 9 interacts with the limit switch 8, which gives a signal to stop the crane truck, and the driver removes it from obstacles. In this case, the spring 13 is spreading, it acts through the yoke 12 on the roller 11, returning section 5 to the initial position,

In the case of moving the crane truck in the opposite direction, the work is carried out in the same way, and

hitting the obstacle section 5 of the console pivots to the other side. The yoke 10 interacts with the crossbeam 12 with another roller 11. The use of the npeq iaraeMoro bridge crane will allow .to expand the service area of the blast furnace casting yard, which will exclude the use of various additional lifting equipment that creates a constrained configuration of the equipment at the hearth, improve reliability, devices by eliminating damage to the obstacle and ensure safe operation. .

Fig.Z

eleven

Claims (2)

(5 * 0 1. A BRIDGE CRANE containing a movement mechanism, a cargo 'trolley with a mechanism for its movement and a pull-out console carrying a load-lifting mechanism, characterized in that, in order to pacujnrenie the service area of the crane, to increase reliability and safety in operation, a retractable the console is made of two sections, the first of which is kinematically connected with the cargo trolley, and the second has a load-lifting mechanism, and it is pivotally connected to the first with the possibility of rotation relative to it in a horizontal plane, and the crane is equipped with a signal system, including a limit switch, interacting with the second section of the console and connected with the mechanism for moving the cargo truck of the crane, and the console is equipped with a mechanism to return the second section to its original position. 2. A crane according to claim ^, characterized in that the mechanism for returning the second console section to its initial position is a rocker mounted on the second section with rollers interacting with a spring-loaded traverse mounted on the first console section.