High-reliability normally-closed full-automatic release device

Abstract

The invention relates to a high-reliability normally-closed full-automatic release device, and provides an L-shaped normally-closed full-automatic release device aiming at defects of small lifting load, poor reliability, low automation degree and the like of a traditional release device in a drop hammer testing machine. An electromagnet, a connecting rod mechanism and a self-resetting U-shaped pinroller are combined to form an L-shaped normally-closed structure, a heavy hammer can be lifted under the driving of a power device in a power-off state of the electromagnet, sosafety and reliabilityare greatly improved, the load lifting capacity is further enhanced, moreover, the state information of unhooking, resetting and heavy hammers of the release device is detected in real time by adopting a plurality of groups of sensors, and one-key lifting and release operation can be realized through program setting, so the automation degree is further improved.

Description

technical field [0001] The invention relates to automatic release, and is especially suitable for the fields of drop weight testing machines and the like. Background technique [0002] The drop weight testing machine lifts the weight to a certain height and then releases it. Under the action of gravity, the weight completes the accelerated movement and collides with the test piece to test the impact resistance of the test piece. As an important device in the drop weight testing machine, the release device mainly lifts the weight to a certain height driven by the power device, and then separates it from the weight by controlling the release device to achieve the purpose of automatically releasing the weight. At present, the drop weight testing machines on the market mainly use electromagnetic and pneumatic release devices. They basically adopt a normally open structure. , the power and volume of the release device are greatly increased. Although the task can be completed und...

AI Technical Summary

Problems solved by technology

At present, the drop weight testing machines on the market mainly use electromagnetic and pneumatic release devices. They basically adopt a normally open structure. , the power and volume of the release device are greatly increased. Although the task can be completed under certain conditions, it also has the following disadvantages: On the one hand, this normally open structure has a greater risk. If the power is suddenly cut off during the lifting process of the hammer , the heavy hammer will fall, which may cause certain harm and damage to the operator and the tested piece, and the reliability is poor; on the other hand, there is no feedback information for the state of the release device and the heavy hammer, and the degree of automation is low. Operator labor intensity is high

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