A highly reliable normally closed fully automatic release device

Abstract

The invention is a highly reliable normally closed fully automatic release device. Aiming at the shortcomings of the traditional release device in the drop weight testing machine, such as small lifting load, poor reliability and low degree of automation, an L-shaped normally closed fully automatic release device is proposed. release device. The combination of electromagnet, connecting rod mechanism and self-resetting U-shaped roller forms an L-shaped normally closed structure. When the electromagnet is powered off, the weight can be lifted under the drive of the power device, which not only ensures safety and reliability. Greatly improved, and the ability to lift loads has been further enhanced. At the same time, multiple sets of sensors are used to detect the status information of the release device's decoupling, reset and weight in real time, and one-button lifting and releasing operations can be realized through program settings, which further improves the degree of automation.

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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