JPS6039337A - Installing method of brush length monitor - Google Patents

Abstract

PURPOSE:To facilitate the accurate installation of a brush length monitor by providing a reference surface parallel to the opposing direction of a light emitting unit and a photoreceptor at part of a supporting fitting of the unit and the photoreceptor, clamping the fitting while providing a rod-shaped fixture for crossing the reference surface and then removing the element. CONSTITUTION:Surfaces A, B, C with which a rod-shaped fixture 11 is contacted, are provided at parts of light emitting element and photoreceptor mounting fittings 6, 7 so that the flat surfaces including the surfaces A, A are parallel to the opposing direction of the unit and the photoreceptor. Then, the element 11 are contacted with the surfaces A, B, C, sizes X, Y, Z are adjusted while checking the sizes X, Y, Z from a direction Q, and the fittings 6, 7 are clamped with bolt, not shown. Then, the element 11 is removed. Thus, a monitor is readily mounted accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for installing a brush length monitoring device, and more particularly, to a method for installing a brush length monitoring device, and more particularly, to a brush length monitoring device that is provided with mounting brackets on both sides of the brush to support both a projector and a receiver. Concerning how to install a monitoring device.

[Background of the invention]

1 to 4, the principle of the brush length monitoring device will be explained using an example of a DC machine.

Figure 2 shows the cross section I[-]I'i in Figure 1, and the third
The figure and FIG. 4 show a view taken along the line mm in FIG. 2. A plurality of brushes 3 are housed in a brush holder 4 and attached to a holder attachment fitting 2.

Further, the brush 3 is mounted on the brush holder 4, and the rotating commutator 1 is mounted on the brush holder 4.
A lever 5 that presses against the 0 surface is attached.

The light constantly emitted from the light projector 9 is received by the light receiver 10, and when the brush 3 is not worn, the light is not blocked by anyone, as shown in FIG. When even one of the plurality of brushes 3 becomes worn, the lever 5 that presses the brush 3 moves down toward the commutator 1, and the fourth
As shown in the figure, the light from the projector 9 is blocked and the entire wear limit of the brush 3 is detected. That is, the entire length of the brush can be monitored.

A projector mounting bracket 6 and a light receiver mounting bracket 7 of a conventional brush length monitoring device are shown in FIG. 5 as viewed from the direction {circle around (2)} in FIG. 1. In the brush length monitoring device, it is essential to assemble the emitter and the receiver in line with each other facing each other correctly, but due to restrictions on the device dimensions of the DC machine, etc., the axial dimension O shown in Figure 2 is There is not enough water for the human body.

Therefore, during assembly work, it is not possible to work in the [F] force direction shown in FIG. 5, and the projector 9,
And, assemble the light receiver 10 so that they face each other while looking left and right, but this is also a work from the Ω direction, so the light emitter 9 and the light receiver 10 are correctly faced to each other (that is, ΔtJFO)
Does it take a lot of assembly time? There are some drawbacks.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an installation method that reduces the total assembly time of a brush length monitoring device by making it easy to install a projector and a light receiver in line.

[Summary of the invention]

The main point of the present invention is to provide a reference plane parallel to the opposing direction on each mounting bracket of the emitter and receiver of the brush length monitoring device, and to provide a rod-shaped layer that straddles both reference planes. The purpose is to make it easier to install the equipment in a straight line.

[・Examples of the invention]

FIG. 6 shows a projector mounting bracket 6'fc of the projector and light receiver mounting brackets of the brush length monitoring device according to the present invention. This is provided with bar-shaped layer installation surfaces ①, ②, and ②. The projector 9 is correctly mounted on the mounting bracket at the positions t, t2 of the reference planes (2), (2), (f), and (2), which have been properly machined. FIG. 7 shows a view from ■-■ in FIG. 6. On the emitter mounting bracket 6 and receiver mounting bracket 7, the surface ■, [F],
If ■ is provided, the rod-shaped layer 11 is captured as shown in FIG.
F], install it on the C1 side, check the XYZ dimensions from the Ω direction, adjust the mounting brackets so that they have the same dimensions, and then tighten them to the stator using the mounting pole) 12.13 to ensure that the emitter and receiver are correctly aligned. Since they can be made to face each other on a line, the total assembly time of the brush length monitoring device can be significantly shortened. In addition, in the figure, 1 is a commutator, 8 is a stator arm, 1
2.13 is a mounting arm.

〔Effect of the invention〕

According to the present invention, since the projector and the light receiver can be easily assembled facing each other from the direction perpendicular to the light emitting direction, the time for assembling the brush length monitoring device can be shortened.

[Brief explanation of drawings]

Figure 1 is a diagram of a conventional brush length monitoring device installed on a full straight line machine, Figure 2 is a sectional view taken along the ■-■ arrow in Figure 1, and Figures 3 and 4.
The figure is a view taken along the line mm in FIG. 2, FIG. 5 is a view taken along the ■ arrow in FIG. 1, and FIG. Figure (b) and Figure 7 are shown in Figure 6.
-■ arrow view and FIG. 8 are views in which the assembly layer is installed on the projector mounting bracket and the light receiver mounting bracket of the shaver length monitoring device of the present invention. DESCRIPTION OF SYMBOLS 1... Commutator, 3... Brush, 6... Emitter mounting bracket, 7... Receiver mounting bracket, 9... Emitter, 1o.
...Receiver, Figure 2 [Shameful cram school flood]

Claims (1)

[Claims] 1. Supporting the projector and receiver arranged on both sides of the brush, respectively, and equipped with supporting metal fittings fixed to the fixed part,
When installing the light emitter and the light receiver so that they face each other and are installed on a line, a reference plane parallel to the direction in which the light emitter and the light receiver face each other is provided on a part of the support fitting, respectively; A method for installing a brush length monitoring device, comprising: providing a rod-shaped strut that straddles these reference surfaces; tightening the support fitting while applying the rod-shaped strut; and removing the rod-shaped strut after tightening.