Crane end beam tensioner

Abstract

The invention discloses a tensioning device for an end beam of a crane. The tensioning device comprises a support frame, a bidirectional screw rod, a left clamp block and a right clamp block, wherein the bidirectional screw rod is provided with a left threaded section and a right threaded section, and the thread direction of the left threaded section is opposite to that of the right threaded section; two ends of the bidirectional screw rod are respectively supported on the support frame; the left clamp block and the right clamp block are respectively screwed on the left threaded section and right threaded section of the bidirectional screw rod; the left clamp block and the right clamp block are circumferentially limited by the support frame; the left clamp block and the right clamp block move close to or away from each other when being driven by the clockwise rotation or anticlockwise rotation of the bidirectional screw rod; clamping parts for being clamped on side plates of the end beam of the crane are arranged on the left clamp block and the right clamp block; a connecting head for connecting the driving device is arranged at one end of the bidirectional screw rod. By utilizing the tensioning device, the interval between the two side plates of the end beam of the crane can be accurately regulated, the time and the labor are saved, and no noise is generated.

Description

technical field [0001] The invention relates to a crane end beam tensioning device. Background technique [0002] The crane end girders are arranged on both sides of the main girder of the crane cart, and are used to carry the main girder. The shape of the cross section of the end beam of the crane is U-shaped. During production, the inner side of the end beam needs to be welded with a stiffener, that is, the stiffener is welded between the two side plates of the end beam. The stiffener is used to increase the strength of the end beam. stability. However, when installing the stiffener, it is often encountered that the length of the stiffener does not match the length of the distance between the two sides of the end beam, that is, the length of the stiffener is longer than the length of the distance between the two sides of the end beam If it is too large, the stiffener cannot be installed into the end beam; if the length of the stiffener is smaller than the distance betwee...

AI Technical Summary

Problems solved by technology

The following methods have the following disadvantages: the ladder frame needs to be tapped during the adjustment process, which not only takes time and effort, but also produces a lot of noise, which is more harmful to the environment; the accuracy of the adjustment is not high, and the distance between the two side plates is prone to be too large or The phenomenon of being too small requires repeated adjustments to meet the requirements, thereby reducing work efficiency

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