JPS6283602A - Instrument for measuring quantity of abrasion - Google Patents

Abstract

PURPOSE:To enable the quantity of abrasion to be automatically and accurately measured by providing a plurality of conductors for forming electric paths such that part of the electric paths gradually leaves from a sliding surface and detecting the disconnection of the electric paths formed by the conductors. CONSTITUTION:When the sliding surface of a substrate 1 is displaced in a direction shown by an arrow due to abrasion and a short-circuiting conductor 3 is scraped off from its end, first the conduction between the first conductor 21 and the short-circuiting conductor 3 is disconnected. Then, a signal is fed from a signal processing circuit 8 to a display 9 and the quantity of abrasion corresponding to the nonconductive state of the first conductor 21 is digitally displayed. Thereafter, the same display corresponding to the abrasion is sequentially conducted. Therefore, by burying the substrate 1 in the sliding portion of, for example, the cylinder liner of an internal-combustion engine or attaching the substrate 1 to the side of the cylinder liner in advance, the quantity of the abrasion is automatically detected and displayed by the nonconductive state of the conductors 21, 22,...2n as the abrasion proceeds, for example, every 0.1mm.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wear amount measuring device suitable for measuring the amount of wear on sliding parts such as cylinder liners of internal combustion engines and bearings of various types of prime movers.

[Prior Art] Conventionally, as a means for measuring the amount of wear on sliding parts as described above,
Measurement methods using gauges such as micro gauges were mainly used.

[Problems to be Solved by the Invention] (1) With the conventional measuring means, measurements could only be made after the operation of the sliding part was stopped at a fixed time and the mechanical part was released. For this reason, during the measurement work, there was a risk that temperature and other ambient conditions would intervene as errors in the measurement results. However, there was a problem in that it was not possible to accurately measure the amount of wear.

Therefore, the present invention makes it possible to perform /ll1j determination even when the ftl moving parts of the all constant object are in operation, and also allows temporally continuous All+ determination, thereby reducing the amount of wear. In addition to being able to constantly monitor progress,
11 without being affected by temperature or other atmosphere.
The object of the present invention is to provide an Hc7 wear amount measurement device that can measure wear amount with low accuracy.

[Means for solving the problem] The above sliding surface is attached to an insulating base made of a highly abrasive member that has a sliding surface on one end that can be mounted flush with the sliding surface of the object to be measured. A plurality of conductors for forming electric circuits are disposed so that a part of each electric circuit gradually moves away from the sliding surface so that the electric circuits are sequentially disconnected according to the progress of wear. The calculation of the amount of wear will be notified by detecting the disconnection of the electric circuit.

[Function] 1!4 Wear meter When the sliding part of the board wears out as the sliding part of the object to be measured wears out, the wear meter
Since the roads are cut one after another, by detecting these cuts, it becomes possible to automatically and accurately measure the amount of wear.

[Example] FIG. 1 is a diagram showing an example of the present invention. In FIG. 1, reference numeral 1 denotes an insulating base consisting of a rectangular plate made of a relatively soft and abrasive material, one longitudinal end of which serves as a sliding end surface 1a, and the other end serves as a signal Lead-in/out end face 1
b.

A plurality of conductors 21, 22, etc. are printed on one side of the base 1 along the longitudinal direction. The plurality of conductors 21, 22... are mutually ・P-? ＋Tekatsu are arranged at equal intervals. The end of each conductor on the sliding end surface 1a side of the substrate 1 is connected to the substrate 1 as shown in the figure.
A first conductor 3 is provided near the proximal end of the base 1, and the convex ends thereof are short-circuited by a short-circuiting conductor 3, and the convex ends are short-circuited by a short-circuiting conductor 3. Connected to electrode 4.

In addition, the conductors 21° 22 arranged in the above-mentioned inclined state...
The distance X from one end side (lower end side in the figure) to the other end side (second end side in the figure) of 2n is 1 mm, and the conductors 21, 22...
・If the number Y of 2n is 11, each conductor 21.22
...2n interval is X/Y-1-0.1 mm.

The other ends of each of the conductors 21, 22, . . . 2n are connected to the second electrode 5, respectively.

The first electrode 4 and the second 7u pole 5 are each connected to a signal processing circuit 8 by a lead wire 6.7.

The signal processing circuit 8 is in a conductive state between the lead wires 6 and 7, in other words, the short circuit conductor 3 and each conductor 21, 22, . . . 2n
The conduction state of the electric path formed by the above is monitored, and each time the conduction is interrupted, a display signal indicating the situation is sent to the display 9. The display 9 digitally displays the amount of wear in accordance with the sent display signal.

In this device configured as FF4 in this way, the sliding portion of the base body 1 shifts as shown by the arrow in the figure due to wear.
When the short-circuiting conductor 3 is scraped off from the end, the conduction between the one conductor 21 and the short-circuiting conductor 3 is first broken. Then, a signal is sent from the signal processing circuit 8 to the display 9, and the IF corresponding to the non-conduction of the conductor 21 of 1" is sent.
/, the measurement is displayed digitally. When the wear progresses further and the conduction between the second wood conductor 22 and the worn conductor 3 is broken, the amount of wear corresponding to the disconnection between the two 1:1 conductors 22 is digitally displayed. Thereafter, the display is similarly performed sequentially according to the amount of wear.

Therefore, by embedding the base 1 in advance in a sliding part such as a cylinder liner of an internal combustion engine, or by forming a sensitive layer on the side surface of the base 1, it is possible to prevent the conductor 21 from being worn, for example, every 0.1 mm. '22...2n wear amount due to non-conductivity is automatically detected and displayed.

FIG. 2 is a diagram showing another embodiment of the present invention.

In FIG. 2, numeral 10 is a cylindrical body made of an insulating material, and in the center thereof there are a plurality of bases 11 for detecting wear amount,
12. ... 15 are buried in total.

Each of the bases 11, 12... 15 is provided with conductors 21, 22, 20, etc. as shown in FIG. 21
．． 22...2n are sequentially shifted by X mm. Therefore, the measurement range of wear i;t is expanded to 5Xmm corresponding to the number of substrates, that is, five substrates in the example of FIG. In this case, even if the base bodies having the same configuration are buried by shifting them by x mm, the same effect as described in (1) above can be obtained.

Note that the present invention is not limited to the above embodiments.

For example, each conductor 21, 22 2n 1・II 'I
T, interval 1 interval 1 width, end slope angle, etc. may be set arbitrarily depending on the situation of the object to be measured (7), and are not limited to those in the above embodiment. jl
The case is shown in which the ends of the conductors 21, 22, 2n consisting of the i-line are connected by 1σ with the shorting conductor 3 to form an electric path, or each conductor 21, 22, 2n is connected in a U-shape. It is also possible to form an electric path by bending the wire 2, and disposing the bent ends of the wire by sequentially shifting the wires. Furthermore, in the embodiment, each conductor 21, 22, 20 is arranged on the outer surface of the insulating base 1,
As shown above, each conductor 21,
22.2n may be buried. It is of course possible to implement various other forms without changing the spirit of the present invention.

[Effects of the Invention] + According to the invention, a portion of each electric path is gradually moved away from the above-mentioned sliding 1 m so that the electric path is sequentially disconnected as +q wear of the sliding motion on the insulating substrate progresses. A conductor is provided to form a failed electric path, and the wear hole is measured by detecting the disconnection of the electric path.Therefore, even if measurement '1.
-Measurements can be made even when the object is in operation, and the progress of wear can be constantly monitored, and it is not affected by temperature or other atmosphere. It is possible to provide a wear measurement device that can accurately measure the amount of I'i'jL.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of one embodiment of the invention, and FIG. 2 is a perspective view showing the main parts of another embodiment of the invention. 1. Insulating base, 21.22-2n...9 electric body, 3...
kυ crossing conductor, 4, 5... 1st. 2nd electricity;nu, 6
．． 7... Lead wire, 10... Cylindrical body, 11. i2~
15 Insulating substrate.

Claims (1)

[Claims] an insulating base made of a member with better abrasion properties than the object to be measured for wear amount, and having a sliding surface at one end that can be mounted flush with the sliding part of the object; and the sliding surface of the insulating base. A plurality of conductors for forming electric circuits are disposed so that a part of each electric circuit is gradually moved away from the sliding surface so that each electric circuit is sequentially disconnected according to the progress of wear of the electric conductor. What is claimed is: 1. A wear amount measuring device comprising means for detecting disconnection of an electric circuit, calculating and notifying the amount of wear.