JP2965104B2 - Method for detecting wear life of lining parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting the life of a lining component mounted on the inner surface of a shot blast machine due to wear.

[0002]

2. Description of the Related Art Conventionally, the state of wear of a lining component mounted on the inner surface of a shot buster is visually inspected by daily inspection. Therefore, if the daily inspection is not performed properly, there is a problem that the lining parts are worn out, holes are formed, the outer plate of the shot blasting machine is damaged, and the operation is stopped. Furthermore, the fact is that lining parts in parts of the shot blasting machine where wear is large are replaced as soon as possible from the viewpoint of preventive maintenance at the time of inspection, which increases the lining cost. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a method for accurately detecting the life of a lining component mounted on the inner surface of a shot blast machine due to wear.

[0003]

In order to achieve the above object, a method for detecting the wear life of a lining component according to the present invention comprises the steps of:
A shock wave generated when the blast material collides with the lining component is received, the received shock wave is converted into a high-frequency electric signal, and the converted high-frequency electric signal is converted into an envelope detection. The number of times of wave generation is integrated, and a set value set in advance is compared with the number of times of integration of a single wave in the detection of a wire for detection.

[0004]

According to the present invention, by adopting the above-mentioned solution, the collision of the shot material with the lining member attached to the inner surface of the shot blast machine reaches a predetermined number of times and the wear life of the lining component is automatically reduced. Is detected.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a shock wave propagating material 2 for propagating a shock wave generated when a projected shot collides with the lining component 1 is mounted at the center of the rear surface of a lining component 1 mounted on the inner surface of the shot blasting machine. On the back side of the shock wave propagation material 2, a converter 3 (A) which receives the shock wave propagated, converts it into a high-frequency electric signal, and outputs it.
E sensor, piezoelectric element, electrostrictive element, high frequency conversion element, etc.)
Is installed. The converter 3 is connected via an amplifier 4A to an envelope detection circuit 4 for converting a high-frequency electric signal into an envelope detection signal. The converter 3 integrates the number of single-wave generations of the envelope detection signal and is set in advance. Setting value (number of times)
And a counter circuit 5 for comparing and calculating the number of single-wave integrations of the envelope detection. The counter circuit 5 is connected to an alarm (buzzer, indicator lamp, etc.) which operates upon receiving an electric signal or a screen display device 6.

[0006] In such a construction, when the lining component 1 is mounted on the inner surface of a shot blasting machine (not shown) and the shot blasting operation is continued, a shot collides with the lining component 1 to generate a shock wave. Is received by the converter 3 via the shock wave propagation material 2. In this case, the shock wave propagation material 2 is omitted and the lining component 1 is omitted.
The transducer 3 may be directly attached to the device to receive a shock wave. The shock wave received by the converter 3 is converted into a high-frequency electric signal and output, amplified by the amplifier circuit 4A and received by the envelope detection circuit 4, and the envelope detection circuit 4 converts the high-frequency electric signal into an envelope detection signal. Counter circuit 5
Is output to The counter circuit 5 accumulates the number of single-wave occurrences of the envelope detection, and compares a set value (number) set in advance with the number of single-wave accumulations of the envelope detection. When there is no difference between them, an electric signal is output and the alarm device or the screen display device 6 is operated to notify the wear life of the lining component 1. In the above embodiment, the envelope detection circuit 4 is connected to a peak measurement circuit for measuring the peak value of a single wave of the envelope detection in addition to the counter circuit 5, so that the number of single wave occurrences of the envelope detection is obtained. Alternatively, a comparison operation may be performed by adding a single wave peak value.

[0007]

As apparent from the above description, the present invention detects the wear life of the lining component by detecting the number (number of times) of the blast material that collides with the lining component. There are various effects such as detection and oversight, which prevents damage to the shot blasting machine and allows the lining component to be used until the end of its life, reducing the running cost of shot blasting. Is big.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lining component 3 Converter 4 Envelope detection circuit 5 Counter circuit 6 Alarm or screen display device

Claims (2)

(57) [Claims] 1. A shock wave generated when a blasting material collides with a lining component is received, the received shock wave is converted into a high-frequency electric signal, and the converted high-frequency electric signal is converted into an envelope detection signal. Detecting the wear life of a lining component by integrating the number of occurrences of a single wave in line detection and comparing a set value set in advance with the number of integrations of a single wave in the envelope detection Method. 2. The lining component according to claim 1, wherein the comparison operation is performed by taking into account the peak value of the single wave of the envelope detection in addition to the number of generations of the single wave of the envelope detection. Wear life detection method.