JP7625628B2 - Measuring scale - Google Patents

Description

The present invention relates to a measuring device.

There are various types of scales for measuring the length of cables, but scales with belts are known. When using such a scale with a belt to measure the length of a cable, the cable is moved in the length direction of the cable while in contact with the belt. At this time, the belt moves together with the cable, so the cable length can be measured by measuring the distance the belt moves. For example, Patent Document 1 discloses such a scale.

Patent No. 3278450

In a measuring scale with a belt like the one described above, if the belt wears out, the belt and cable do not move together, and the length of the cable and the distance traveled by the belt do not match, which can result in poor measurement accuracy. For this reason, the belt needs to be replaced before it wears out; for example, in a measuring scale with a long operating time, frequent belt replacement may be necessary.

The object of the present invention is to provide a measuring device that can reduce the need for frequent belt replacement.

In order to solve the above problem, according to one aspect of the present invention,
A measuring instrument for measuring the length of a cable,
a measuring device body having a belt for contacting the cable;
a moving mechanism for moving the measuring device main body in a width direction of the belt perpendicular to the moving direction of the belt;
A scale is provided, comprising:

The present invention provides a measuring instrument that can reduce the need for frequent belt replacement.

FIG. 1A is a side view of a scale according to an embodiment of the present invention, and FIG. 1B is a schematic plan view showing how the scale according to the embodiment of the present invention moves in the width direction of a belt. FIG. 2A is a side view of the scale body, FIG. 2B is a side view of the movement mechanism, and FIGS. 2C and D are plan views of the movement mechanism.

The following describes a preferred embodiment of the measuring device of the present invention.

Figure 1A shows a side view of a scale 10 according to this embodiment. As shown in Figure 1A, the scale 10 has a scale body 20, a movement mechanism 30, a guide roller 40, and a support base 50.

In the scale 10, the movement mechanism 30 moves the scale body 20 in the width direction of the belt 21 (the direction perpendicular to the movement direction of the belt 21). Fig. 1B is a plan view showing how the scale body 20 moves in the width direction of the belt 21 (the left-right direction in the figure) by the movement mechanism 30.
1B, the cable 1 is in contact with the region of the belt 21 on the right side of the figure, in the center figure the cable 1 is in contact with the central region of the belt 21, and in the right figure the cable 1 is in contact with the region of the belt 21 on the left side of the figure. By moving the measuring device main body 20 in the width direction of the belt 21 in this way, the position where the cable 1 contacts the belt 21 can be changed in the width direction of the belt 21. Therefore, even if the belt 21 wears out at a certain position in the width direction, the belt 21 can be used at another position that is not yet worn out, and frequent replacement of the belt 21 can be suppressed.
Each component of the scale 10 will be described below.

(Measuring scale body)
2A shows a length measuring device main body 20 according to the present embodiment. The length measuring device main body 20 has a belt 21, a belt roller 22, a length measuring wheel 23, a measuring unit 24, a stand 25, and a conveying roller 26. The length measuring device main body 20 is for measuring the length of the cable 1 as described above.

The belt 21 is not particularly limited as long as it is configured to be in contact with the cable 1 and move substantially the same distance as the cable 1 moves. In this embodiment, the belt 21 is arranged in a position where the cable 1 can be sandwiched between the belt 21 and the conveying roller 26 rotatably supported by the frame 25, so that the belt 21 can move together with the cable 1. In this embodiment, the belt 21 is an endless belt, and is held in place by two belt rollers 22 arranged in the length direction of the cable 1 so as not to sag. There is no particular limit to the width of the belt 21 as long as it is larger than the thickness of the cable 1 to be measured, but from the viewpoint of exerting the effect of the present invention, it is preferable that the width of the belt 21 is several times or more the thickness of the cable 1. It is preferable that the material of the belt 21 has a moderate friction so that it can move without slipping along with the moving cable 1.

As described above, the belt roller 22 holds the belt 21 so that it does not sag. The belt roller 22 rotates as the belt 21 moves. The belt roller 22, together with the belt 21 and the measuring wheel 23, is supported by a stand 25 and is configured to be movable in the vertical direction. As the belt roller 22 moves in the vertical direction, the belt 21 also moves in the vertical direction, and the cable 1 can be sandwiched between the belt 21 and the conveying roller 26.

The length measuring wheel 23 contacts the belt 21 and rotates with the movement of the belt 21. The rotation of the length measuring wheel 23 is measured by the measuring unit 24, thereby measuring the length of the cable 1. In this embodiment, the length measuring wheel 23 is disposed above the belt 21 and contacts the belt 21.

The stand 25 is for supporting the moving cable 1, belt 21, belt roller 22, measuring wheel 23, and measuring unit 24. In this embodiment, a conveying roller 26 is rotatably arranged on the upper part of the stand 25, and this conveying roller 26 comes into contact with the cable 1 and rotates together with the movement of the cable 1.

The configuration of the measuring device main body 20 is not limited to the embodiment as long as it measures the length of the cable 1 using the belt 21. For example, the measuring device main body 20 may directly measure the movement of the belt 21 using the measuring unit 24.

(Moving mechanism)
2B to 2D show the moving mechanism 30 according to this embodiment. Fig. 2B is a side view of the moving mechanism 30, Fig. 2C is a plan view, and Fig. 2D shows the state in which the holding plate 31 is removed from Fig. 2C. As shown in Figs. 2B to 2D, the moving mechanism 30 has the holding plate 31, a holder 32, a rail 33, a handle 34, a screw shaft 35, a moving section 36, and a fixed section 37.

The holding plate 31 holds the scale body 20. In this embodiment, the holding plate 31 is fixed to the stand 25 of the scale body 20 and holds the scale body 20. There are no particular restrictions on the shape and size of the holding plate 31 as long as it can hold the scale body 20. In this embodiment, the holding plate 31 is a plate-like member large enough to hold the scale body 20.

The holder 32 is fixed to the bottom of the holding plate 31 and slides along the rail 33. As the holder 32 slides along the rail 33, the holding plate 31 and the measuring device main body 20 also move. There are no particular limitations on the holder 32 as long as it is fixed directly or indirectly to the measuring device main body 20 and configured to be slidable along the rail 33. In this embodiment, as shown in FIG. 2D, four holders 32 are arranged at the four corners of the holding plate 31.

The rail 33 is disposed below the holder 32 and extends in the width direction of the belt 21. As described above, the holder 32 slides along the rail 33, causing the scale body 20 to move in the width direction of the belt 21. In this embodiment, the two rails 33 are disposed spaced apart in the length direction of the belt 21. In this embodiment, the rails 33 are fixed onto the support base 50.

The handle 34 is for rotating the screw shaft 35. By turning the handle 34, the screw shaft 35 rotates, and the moving part 36 fixed to the holding plate 31 moves along the screw shaft 35. As a result, the holding plate 31 moves in the width direction of the belt 21, and the measuring device main body 20 also moves in the width direction of the belt 21.
The handle 34 is not particularly limited as long as it is configured to rotate the threaded shaft 35. In the present embodiment, the handle 34 is fixed to the threaded shaft 35, and the rotation of the handle 34 results in the rotation of the threaded shaft 35.

The screw shaft 35 is a member that has a screw thread that meshes with the moving part 36 and extends in the width direction of the belt 21. In this embodiment, the screw shaft 35 is disposed between the two rails 33 and moves the holding plate 31 as described above.

The moving part 36 is a so-called nut-like part that is fixed to the holding plate 31 and engages with the screw shaft 35. When the moving part 36 moves along the screw shaft 35, the holding plate 31 moves, and the scale body 20 on the holding plate 31 also moves. There are no particular limitations on the moving part 36 as long as it is directly or indirectly fixed to the scale body 20 and can move along the screw shaft 35.

The fixed part 37 is fixed to the support base 50 (base) and rotatably supports the screw shaft 35. By supporting the screw shaft 35 with the fixed part 37, the screw shaft 35 continues to rotate in place without changing its position relative to the support base 50 (base). The fixed part 37 is also configured to be able to stop the rotation of the screw shaft 35, and by stopping the rotation of the screw shaft 35, the movement of the measuring instrument main body 20 can be stopped. The fixed part 37 is not particularly limited as long as it is configured to be able to perform these functions. In this embodiment, the fixed part 37 has a convex part that fits into a groove provided on the screw shaft 35, thereby rotatably supporting the screw shaft 35. In this embodiment, the fixed part 37 has a rotating lever 37a, and is configured to clamp the screw shaft 35 within the fixed part 37 by rotating the rotating lever 37a, thereby stopping the rotation of the screw shaft 35. The fixed part 37 may be positioned as appropriate so as not to impede the movement of the moving part 36, and in this embodiment, the fixed part 37 is positioned on the support base 50 near the handle 34.

The configuration of the moving mechanism 30 is not limited to the embodiment as long as it can move the scale body 20 in the width direction of the belt 21. For example, the scale body 20 may be moved in the width direction of the belt 21 by casters or the like.

(Guide roller)
The guide rollers 40 position the cable 1 entering the measuring device main body 20 or exiting from the measuring device main body 20. The guide rollers 40 preferably position the cable 1 so as to be parallel to the belt 21. The guide rollers 40 that position the incoming cable 1 are disposed upstream in the moving direction of the cable 1, and the guide rollers 40 that position the outgoing cable 1 are disposed downstream in the moving direction of the cable 1. It is also preferable that the measuring device 10 has both a guide roller 40 that positions the incoming cable 1 and a guide roller 40 that positions the outgoing cable 1.

(Support stand)
The support base 50 is disposed below the rail 33, and serves as the base for the movement mechanism 30. In this embodiment, the support base 50 is fixed to the floor of the building. Therefore, in this embodiment, the movement mechanism 30 moves the scale body 20 in the width direction of the belt 21 relative to the support base 50 and the floor. The height of the support base 50 may be set appropriately according to the height of the moving cable 1, etc. Also, the support base 50 does not have to be provided, and for example, the floor of the building may serve as the base for supporting the rail 33.

(effect)
According to the scale measuring device 10 of this embodiment, the scale measuring device main body 20 can be easily moved in the width direction of the belt 21, and the contact position between the cable 1 and the belt 21 can be changed. This reduces the frequency of replacing the belt 21 of the scale measuring device 10, and reduces running costs.

The invention of the present invention is useful for measuring instruments that have a belt that contacts a cable.

REFERENCE SIGNS LIST 1 Cable 10 Scale 20 Scale body 21 Belt 22 Belt roller 23 Scale wheel 24 Measuring section 25 Stand 26 Conveyor roller 30 Moving mechanism 31 Holding plate 32 Holding device 33 Rail 34 Handle 35 Screw shaft 36 Moving section 37 Fixed section 37a Rotating lever 40 Guide roller 50 Support stand

Claims (6)

A measuring instrument for measuring the length of a cable,
a measuring device body having a belt for contacting the cable;
a moving mechanism for moving the measuring device main body in a width direction of the belt perpendicular to the moving direction of the belt , thereby changing a position of the belt at which the measuring device main body contacts the cable in the width direction of the belt ;
A measuring scale comprising: 2. The measuring device according to claim 1,
The measuring device further includes a support base for supporting the moving mechanism and the measuring device main body,
The measuring device is characterized in that the moving mechanism moves the measuring device main body in the width direction of the belt relative to the support base. 2. The measuring device according to claim 1,
The cable may be inserted into the measuring device body, or may be pulled out from the measuring device body.
The measuring device is characterized in that the moving mechanism moves the measuring device main body in the width direction of the belt relative to the guide roller. 2. The measuring device according to claim 1,
A measuring instrument, characterized in that the moving mechanism has a rail extending in the width direction, and a holder fixed directly or indirectly to the measuring instrument body and slidable on the rail. 5. The measuring device according to claim 4,
The measuring device according to claim 1, wherein the moving mechanism further comprises a screw shaft extending in the width direction, and a moving part fixed directly or indirectly to the measuring device body and moving along the screw shaft. The measuring device according to claim 4 or 5,
A scale measuring device characterized in that the movement mechanism further has a fixing portion for stopping the movement of the scale measuring device main body.

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