A mechanical anti-collision device and method for a large double-girder mobile crane

Abstract

The invention relates to a machine anti-collision device and method of a large-sized double-beam traveling crane. The method comprises the steps: after the traveling crane enters a towering machine tool operation area, the traveling crane is decelerated; during the decelerating operation of the traveling crane, a forwards-extending transverse blocking arm touches a ram of a machine tool and then is withdrawn, the top ends of levers extend forwards, normally-closed travel switches at the end portions of the levers and supporting rods are switched off, a traveling crane cart motor electric-hydraulic brake braking power supply circuit works, a traveling crane cart is parked, and an alarm lamp is normally on and whistles; the levers, the transverse blocking arm and the travel switches reset to original positions under the action of reset springs at the top ends of the levers, the alert of the alarm lamp is released, braking of a traveling crane cart brake is turned on, a motor is powered on, a control circuit is recovered, and a cart can operate. The device and the method have the beneficial effects that a cart anti-collision device for the large-sized double-beam traveling crane in a heavy equipment manufacturing production workshop is designed, and the safety of the traveling crane and towering components, such as field production equipment, is effectively guaranteed.

Description

Technical field [0001] The invention relates to a method for preventing the operation of a crane crane from crashing with a machine tool, in particular to a mechanical collision avoidance method for a large double-beam crane, and particularly belongs to the field of heavy processing. [0002] technical background [0003] At present, in the heavy equipment processing workshop, the large double-beam crane is an important equipment for the workshop to transfer workpieces and unload the machine tools. Generally, the installation height of the hanging bottom beam in the heavy equipment workshop is about 11m to 15m; the vertical turning-milling compound machine tool of 8m or more has a maximum processing height of 4.5m or more, and the top of the ram will rise up to 15m or more. The machine is running , The crane can't pass smoothly. [0004] Domestic cranes respond to this problem. Generally, measures such as deceleration, whistle, and photoelectric induction parking are manually operat...

AI Technical Summary

Problems solved by technology

Generally, the installation height of the hanging bottom beam in the heavy equipment workshop is about 11m to 15m; for the vertical turning-milling compound machine tool above 8m, the maximum processing height is above 4.5m, and the maximum rise of the top of the ram will reach above 15m. , the crane cart cannot pass smoothly

[0004] To deal with this problem, domestic mobile cranes generally take measures such as manual deceleration, whistle, and photoelectric induction parking at specific locations. In the application of specific manual deceleration and whistle warning applications for large-scale double-girder mobile crane anti-collision, the subjective protection awareness of personnel dominates. , when the staff's awareness is slack and the noise in the workshop is too loud, this device cannot play a good role

The photoelectric induction deceleration and parking have high requirements on the reflection angle and the cleanliness of the environment, but the processing environment is dusty, the vibration is large, and there is dust accumulation on the reflector. When the angle is deflected, the sensing performance is reduced and cannot play the role of anti-collision

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