Measuring instrument

Abstract

To provide a measuring instrument capable of having a belt suppressed from being frequently replaced.SOLUTION: The present invention relates to a measuring instrument (10) for measuring the length of a cable (1), and the measuring instrument (10) has a measuring instrument body (20) which has a belt (21) for coming into contact with the cable (1), and a moving mechanism (30) for moving the measuring instrument body (20) in a width direction of the belt (21) perpendicular to a moving direction of the belt (21).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a measuring device. [Background technology]

[0002] There are various types of measuring instruments for measuring the length of cables, and a measuring instrument with a belt is known. When measuring the length of a cable using such a measuring instrument with a belt, the cable is moved in the length direction of the cable while being in contact with the belt. At this time, the belt moves together with the cable, so the length of the cable can be measured by measuring the distance the belt moves. For example, Patent Document 1 discloses such a measuring instrument. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3278450 Summary of the Invention [Problem to be solved by the invention]

[0004] In a measuring instrument having a belt as described above, when the belt wears, the belt and the cable do not move together, and the length of the cable and the distance traveled by the belt do not match, which can lead to poor measurement accuracy. Therefore, the belt needs to be replaced before it wears out, and for example, in a measuring instrument with a long operating time, the belt may need to be replaced frequently.

[0005] An object of the present invention is to provide a measuring instrument that can reduce the need for frequent belt replacement. [Means for solving the problem]

[0006] 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: Effect of the Invention

[0007] According to the present invention, a measuring instrument can be provided that can reduce the need for frequent belt replacement. [Brief description of the drawings]

[0008] [Figure 1] 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. [Diagram 2] 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. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] BEST MODE FOR CARRYING OUT THE PRESENTLY PREFERRED EMBODIMENTS Hereinafter, a measuring instrument according to a preferred embodiment of the present invention will be described.

[0010] 1A shows a side view of a scale 10 according to the present embodiment. As shown in FIG. 1A, the scale 10 has a scale body 20, a movement mechanism 30, a guide roller 40, and a support base 50.

[0011] In scale measuring device 10, movement mechanism 30 moves scale measuring device main body 20 in the width direction of belt 21 (direction perpendicular to the movement direction of belt 21). Fig. 1B shows in a plan view how scale measuring device main body 20 moves in the width direction of belt 21 (left and right direction in the figure) by movement mechanism 30. 1B, cable 1 contacts the belt 21 in a region on the right side of the figure, in the center figure cable 1 contacts the belt 21 in a region on the center side of the figure, and in the right figure cable 1 contacts the belt 21 in a region on the left side of the figure. By moving the scale body 20 in the width direction of the belt 21 in this way, the position where cable 1 contacts belt 21 can be changed in the width direction of the belt 21. Therefore, even if the belt 21 wears out in a portion of the width direction, the belt 21 can be used in another portion 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.

[0012] (meter body) 2A shows a length measuring device main body 20 according to this 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.

[0013] 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 at 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 by two belt rollers 22 arranged in the length direction of the cable 1 so as not to sag. The width of the belt 21 is not particularly limited 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, the width of the belt 21 is preferably several times or more the thickness of the cable 1. The material of the belt 21 is preferably one having an appropriate friction so that the belt 21 can move without slipping along with the moving cable 1.

[0014] As described above, the belt roller 22 holds the belt 21 so as not to sag. The belt roller 22 rotates with the movement of the belt 21. 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.

[0015] 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 a 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.

[0016] The stand 25 is for supporting the moving cable 1, the belt 21, the belt roller 22, the measuring wheel 23, and the measuring unit 24. In this embodiment, a conveying roller 26 is rotatably disposed 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.

[0017] The configuration of the scale 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 scale body 20 may directly measure the movement of the belt 21 by the measuring unit 24.

[0018] (Moving mechanism) 2B to 2D show a 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 a state in which the holding plate 31 has been removed from Fig. 2C. As shown in Figs. 2B to 2D, the moving mechanism 30 has a 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.

[0019] 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 limitations 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 allow the scale body 20 to be placed on it.

[0020] The holder 32 is fixed to the lower part of the holder plate 31, and slides along rails 33. As the holder 32 slides along rails 33, the holder plate 31 and the scale body 20 also move. The holder 32 is not particularly limited as long as it is fixed directly or indirectly to the scale body 20 and configured to be slidable along rails 33. In this embodiment, four holders 32 are arranged at the four corners of the holder plate 31, respectively, as shown in FIG. 2D.

[0021] Rails 33 are disposed below holder 32 and extend in the width direction of belt 21. Holder 32 slides along rails 33 as described above, causing scale body 20 to move in the width direction of belt 21. In this embodiment, two rails 33 are disposed spaced apart in the longitudinal direction of belt 21. Also, in this embodiment, rails 33 are fixed onto support base 50.

[0022] 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 scale body 20 also moves in the width direction of the belt 21. There are no particular limitations on the handle 34 as long as it is configured to rotate the screw shaft 35. In the present embodiment, the handle 34 is fixed to the screw shaft 35, and rotation of the handle 34 results in rotation of the screw shaft 35.

[0023] The screw shaft 35 has a screw thread that meshes with the moving portion 36 and is a member that 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.

[0024] The moving part 36 is a so-called nut-like part, which is fixed to the holding plate 31 and engages with the screw shaft 35. The holding plate 31 moves as the moving part 36 moves along the screw shaft 35, and further the scale measuring device main body 20 on the holding plate 31 also moves. The moving part 36 is not particularly limited as long as it is fixed directly or indirectly to the scale measuring device main body 20 and can move along the screw shaft 35.

[0025] 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 scale body 20 can be stopped. The fixed part 37 is not particularly limited as long as it is configured 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 in the fixed part 37 by rotating the rotating lever 37a, thereby stopping the rotation of the screw shaft 35. The fixed portion 37 may be disposed appropriately so as not to interfere with the movement of the moving portion 36, and in this embodiment, the fixed portion 37 is disposed on the support base 50 at a position close to the handle 34.

[0026] 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.

[0027] (Guide roller) Guide rollers 40 position cable 1 entering or leaving scale body 20. Guide rollers 40 preferably position cable 1 so as to be parallel to belt 21. Guide rollers 40 that position incoming cable 1 are disposed upstream in the moving direction of cable 1, and guide rollers 40 that position outgoing cable 1 are disposed downstream in the moving direction of cable 1. Furthermore, it is preferable that scale 10 has both guide rollers 40 that position incoming cable 1 and guide rollers 40 that position outgoing cable 1.

[0028] (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 cable 1 to be moved, 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.

[0029] (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. [Industrial Applicability]

[0030] The invention according to the present invention is useful for measuring instruments having a belt that contacts a cable. [Explanation of symbols]

[0031] 1 Cable 10 Measuring instrument 20 Measuring instrument body 21 Belt 22 Belt roller 23 Measuring wheel 24 Measuring part 25 Mount 26 Transport roller 30 Moving mechanism 31 Holding plate 32 Cage 33 Rail 34 Handle 35 Screw shaft 36 Mobile Section 37 Fixed part 37a Rotating lever 40 Guide roller 50 Support stand

Claims

1. 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. 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.

3. 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.

4. 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. 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.

6. 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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