Inspection tool for thermal trip of moulded case circuit breaker and use method thereof

Abstract

The invention relates to an inspection tool for the thermal trip of a moulded case circuit breaker and a use method thereof. The inspection tool for the thermal trip of a moulded case circuit breaker is characterized in that the middle of the upper surface of a body is provided with a deep groove; the left side and the right side of the deep groove are respectively provided with a cuboid groove; the lower surfaces of the left groove and the right groove of the body are respectively provided with a locating convex slot and a locating convex slot; the left side and the right side of the body are also respectively provided with a through hole for detection; the left side and the right side of the body are respectively provided with a left screw hole and a right screw which are vertically downward; and the inspection tool also comprises a left bolt with a handle, a right bolt with a handle, an n-shaped press block, a round pressing handle and a detection rod. The inspection tool is simple to operate, is convenient to process (which can be finished by linear cutting or grinding processing), is convenient to carry, is convenient to store and the like, and has the characteristics of low cost and high use ratio. According to the preliminary statistics, the detection speed of the inspection tool is 20 times that of a three-dimensional projection instrument and is 25 times of height gauge detection, working efficiency is greatly improved, labor intensity is lowered, and cost is greatly saved. The inspection tool is used to prove that the fall out ratio and the omission ratio are almost zero.

Description

technical field [0001] The invention belongs to a detection tool, in particular to a detection tool of a thermal tripper of a molded case circuit breaker and a use method thereof. Background technique [0002] The time-delay release of TM30-100 molded case circuit breaker is welded by multiple parts, including connecting plate, coil, heating element, soft connection, bimetal temperature sensing element, and a threaded hole on the temperature sensing element. Adjusting screws should be installed in the middle for the adjustment of the delay test. After the release is formed, it is extremely difficult to detect the position between the threaded hole of the temperature sensing element and the connecting plate as the installation reference. First, there are many components of this component, and no suitable reference plane can be found by measuring with a physical ruler. Second, due to the thinness of each component, the small welding area, and the soft connection among them, th...

AI Technical Summary

Problems solved by technology

[0002] The time-delay release of TM30-100 molded case circuit breaker is welded by multiple parts, including connecting plate, coil, heating element, soft connection, bimetal temperature sensing element, and a threaded hole on the temperature sensing element. The adjusting screw should be installed in the center for the adjustment of the delay test. After the trip unit is assembled, it is extremely difficult to detect the position between the threaded hole of the temperature sensing element and the connecting plate as the installation reference.

First, there are many components of this component, and no suitable reference plane can be found by measuring with a physical ruler. Second, due to the thinness of each component, the small welding area, and the soft connection among them, the flexibility of this component is very strong. When measuring It will move, and it is not easy to hold firmly, it is difficult to grasp the measurement accuracy, but this size requires high precision on the automatic inspection line, so it is necessary to use the inspection tool for measurement to meet the application requirements of the inspection line

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