Double-beam hoist-type anti-collision safety protection device for crane

Abstract

The invention discloses a double-beam hoist-type anti-collision safety protection device for a crane, which is characterized in that a cross-shaped safety limit switch QS1 (2), a square steel pipe (4) and an approach switch QS2 (3) are arranged in the crane (1), wherein the square steel pipe (4) is 0 to 2 m longer than the front side of a building in a workshop ; the approach switch QS2 (3) and the square steel pipe (4) are arranged on the same vertical plane and above the square steel pipe (4); the cross-shaped safety limit switch QS1 (2) is connected with an intermediate relay KA1; the approach switch QS2 (3) is connected with an intermediate relay KA2; the intermediate relays (KA1 and KA2) are connected with an intermediate relay KA3; an intermediate relay K050 is connected with the intermediate relay KA3; the intermediate relay KA3 is connected with a cart driving contactor K051 in series; and all the intermediate relays (KA1, KA2, KA3 and K050) and the cart driving contactor K051 are arranged in the control box of the crane (1). The device can ensure that the crane moves along a building in the rail direction without being impacted by a lifting hook of the crane; and the problem that loss is caused when the area of a warehouse is changed to meet safety requirements is solved.

Description

Technical field: [0001] The invention relates to an anti-collision safety protection device for a crane, in particular to an anti-collision safety protection device for a double-beam gourd type crane. Background technique: [0002] At present, the workshop office and power distribution room of many enterprises are built in the production workshop, and they are all places where the crane runs through. It is very likely that the crane hook hits the building in the workshop due to crane failure or operation error, and there are serious problems. Security risks. [0003] 1. The existing crane trolley is installed at a limit of 1.5 meters from the terminal column along the track direction to prevent the crane from hitting the track terminal column. The general office width of 8 meters is greater than the limit installation position, which cannot protect the office from being hit by the crane hook effect. [0004] 2. The left side of the office in some production workshops belon...

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Problems solved by technology

[0002] At present, the workshop office and power distribution room of many enterprises are built in the production workshop, and they are all places where the crane runs through. It is very likely that the crane hook hits the building in the workshop due to crane failure or operation error, and there are serious problems. Security risks

[0003] 1. The existing crane trolley is installed at a limit of 1.5 meters from the terminal column along the track direction to prevent the crane from hitting the track terminal column. The general office width of 8 meters is greater than the limit installation position, which cannot protect the office from being hit by the crane hook effect

[0004] 2. The left side of the office in some production workshops belongs to the warehouse goods stacking area. If the limit installation position of the crane cart along the track direction is changed to more than 8 meters, the crane cannot run to the goods in the warehouse goods stacking area on the left side of the office.

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