JP2015210169A - Dimension measuring jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible for a dimension measuring jig to be utilized in measuring a length dimension of a long body installed in a bent state, and utilized in measuring a length dimension of a long body having elasticity.SOLUTION: A dimension measuring jig according to the present invention comprises: arms provided along an outer circumference of a long body; and a roller which is freely rotatably attached to the arms so as to come into contact with an outer peripheral surface of the long body and connected to rotation detection means which detects and computes a rotation number and a rotation angle, in which a length dimension of the long body is measured by the rotation detection means based on rotation of the roller associated with a movement in an extension direction of the long body of the arm. The long body consists of piping which is a high-pressure rubber hose 6, for example, the arm consists of a first arm 1 and a second arm 2 each having a curved shape which are arranged so as to surround the high-pressure rubber hose 6, and the roller consists of a first roller 4 attached to the first arm 1 and a second roller 5 attached to the second arm 2.

Description

  The present invention relates to a dimension measuring jig used for measuring a length dimension of a long body such as a pipe such as a high pressure rubber hose provided in a hydraulic elevator.

  Conventionally, Patent Document 1 discloses a measuring apparatus that measures the length of a wire rope forming a long body. The technique disclosed in Patent Document 1 includes a conveyance roller that conveys the wire rope 1, a guide roller that is disposed forward and backward so as to sandwich the conveyance roller, and a pressing roller. The wire rope whose length is to be measured is inserted between the guide roller and the conveying roller, and further inserted between the conveying roller and the pressing roller, and is pressed against the conveying roller by the pressing force of the pressing roller. Become. By transporting the wire rope in this state, the transport roller and the rotary encoder rotate, and the length dimension of the wire rope is measured based on the signal output from the rotary encoder.

JP-A-6-241771

  In the prior art disclosed in Patent Document 1 described above, for example, in the case of a pipe or the like arranged in a bent shape of a long body, it is difficult to measure the length of the bent pipe. In addition, when the above-described piping is a high pressure rubber hose that connects, for example, a hydraulic power unit provided in a hydraulic elevator and a hydraulic jack that raises and lowers the car, the high pressure rubber hose has elasticity, so the high pressure rubber hose is pushed. When pressure is applied, the length of the high-pressure rubber hose may change due to elasticity, and it is difficult to accurately measure the length dimension.

  The present invention has been made from the actual situation in the above-described prior art, and the object thereof can be used for measuring the length of a long body installed in a bent form, and also has a long body having elasticity. An object of the present invention is to provide a dimension measuring jig that can be used for measuring a length dimension.

  In order to achieve the above object, a dimension measuring jig according to the present invention is used when measuring the length dimension of a long body, the arm provided along the outer periphery of the long body, and the long An extension of the elongated body of the arm, comprising a roller that is rotatably attached to the arm so as to contact the outer peripheral surface of the scale body, and that is connected to a rotation detecting means for detecting and calculating the rotation speed and the rotation angle. The length of the elongated body is measured by the rotation detecting means based on the rotation of the roller accompanying the movement of the direction.

  The dimension measuring jig according to the present invention can be used for measuring the length of a long body installed in a bent form, and can also be used for measuring the length of a long body having elasticity. It is possible to secure versatility superior to that of the prior art.

It is a figure which shows the structure of 1st Embodiment of the dimension measuring jig of this invention. It is a figure which shows the state which expand | deployed the dimension measuring jig which concerns on 1st Embodiment. It is a figure which shows piping mentioned as an example of the elongate body which is a measuring object of the dimension measuring jig concerning 1st Embodiment. It is a figure which shows the state before mounting | wearing the dimension measuring jig which concerns on 1st Embodiment to the piping shown in FIG. It is a figure which shows the state when the dimension measurement jig | tool which concerns on 1st Embodiment is attached to the piping shown in FIG. 3, and the length dimension of piping is measured. It is a figure which shows 2nd Embodiment of the dimension measuring jig which concerns on this invention.

  Hereinafter, embodiments of a dimension measuring jig according to the present invention will be described with reference to the drawings.

  The dimension measuring jig according to the present embodiment is used when measuring the length of a long body, for example, a pipe. In the present embodiment, an arm provided along the outer periphery of the pipe, and a rotation detection unit (not shown) that is rotatably mounted on the arm so as to contact the outer peripheral surface of the pipe, and detects and calculates the rotation speed and the rotation angle. The length of the pipe is measured by the above-described rotation detecting means based on the rotation of the roller accompanying the movement of the arm in the pipe extending direction.

  As shown in FIGS. 1 and 2, the arm described above includes a curved first arm 1 and a second arm 2 arranged so as to surround the pipe. And a shaft 3 for rotatably connecting the second arm 2 to each other. The roller described above is configured so that the first roller 4 attached to the first arm 1 and the movement of the second arm 2 in the extension direction are restricted so that the movement of the first arm 1 in the extension direction is restricted. The second roller 5 is mounted on the two arms 2.

  For example, as shown in FIG. 3, the above-described piping is connected to a hydraulic power unit provided in a hydraulic elevator and a hydraulic jack for raising and lowering a car, and is arranged in a bent form, and includes a high-pressure rubber hose 6 having elasticity. Yes.

  When measuring the length dimension of the high-pressure rubber hose 6 shown in FIG. 3 using this embodiment, the above-described rotation detection means (not shown) is connected to each of the first roller 4 and the second roller 5. In this state, as shown in FIG. 4, the first arm 1 and the second arm 2 are deployed, and as shown in FIG. 5, the first roller 4 of the first arm 1 and the second roller 5 of the second arm 2. Is attached to the starting end of the high-pressure rubber hose 6 while being closed so as to contact the outer peripheral surface of the high-pressure rubber hose 6.

  While maintaining the state in which the first roller 4 and the second roller 5 are in contact with the outer peripheral surface of the high pressure rubber hose 6 as described above, as shown by the arrow 7 in FIG. The first arm 1 and the second arm 2 are moved so that the first roller 4 and the second roller 5 do not slip.

  During such movement, the first roller 4 and the second roller 5 continue to rotate, and a rotation detection unit (not shown) connected to the first roller 4 and a rotation detection unit (not shown) connected to the second roller 5 The rotation speed and rotation angle of the first roller 4 and the second roller 5 are detected. The length dimension of the high-pressure rubber hose 6 can be obtained based on the number of rotations and the rotation angle.

here,
R: Diameter of the first roller 4 and diameter of the second roller 5 n1: Number of rotations of the first roller 4 d1: Rotation angle of the first roller 4 not reaching one rotation L1: Measured by rotation of the first roller 4 Length dimension of high pressure rubber hose 6 n2: Number of rotations of second roller 5 d2: Rotation angle of second roller 5 not reaching one rotation L2: Length dimension of high pressure rubber hose 6 measured by rotation of second roller 5 ,
L1 = 2πR × n1 + 2πR (d1 / 360) (1)
L2 = 2πR × n2 + 2πR (d2 / 360) (2)
Holds. So, for example,
L = (L1 + L2) / 2
The length dimension of the high-pressure rubber hose 6 can be obtained by calculating L and obtaining L.

  When the measurement target of the present embodiment is a bent object as shown in FIG. 3, when the first roller 4 is brought into contact with the outer peripheral surface of the high-pressure rubber hose 6, the second roller When 5 is brought into contact with the outer peripheral surface of the high-pressure rubber hose 6, line contact is formed, so that by moving the first arm 1 and the second arm 2 along the bent form of the high-pressure rubber hose 6, The length dimension L of the high-pressure rubber hose 6 can be measured.

  Moreover, when the measurement object of this embodiment is the high pressure rubber hose 6 having elasticity as shown in FIG. 3, the high pressure rubber hose 6 is pressed by the pressing force of the first roller 4 and the second roller 5 against the outer peripheral surface of the high pressure rubber hose 6. The length L of the high pressure rubber hose 6 can be measured while preventing elastic deformation.

  That is, the dimension measuring jig according to the present embodiment can be used for measuring the length dimension L of the high-pressure rubber hose 6 installed in a bent form, and also measures the length dimension L of the high-pressure rubber hose 6 having elasticity. In this case, it can be utilized, and excellent versatility can be secured.

  Further, in the present embodiment, the high pressure rubber hose 6 length L1 obtained by the rotation of the first roller 4 and the high pressure rubber hose 6 length L2 obtained by the rotation of the second roller 5 are used. The length L of the rubber hose 6 can be obtained. Thereby, the length L of the high-pressure rubber hose 6 with high reliability can be obtained.

  Further, in the present embodiment, when the high pressure rubber hose 6 is mounted, the first arm 1 and the second arm 2 are developed around the shaft 13, and then the first roller 4 and the second arm 1 of the first arm 1 are expanded. The measurement can be performed in a state where the second roller 5 of the arm 2 is closed so as to abut on the outer surface of the high pressure rubber hose 6, so that the high pressure rubber hose 6 can be easily attached and detached. Thereby, this embodiment can perform the measurement operation | work of the length dimension L of the high pressure rubber hose 6 easily.

  Note that protrusions may be provided on the open end side of the first arm 1 and the open end side of the second arm 2, respectively, and these protrusions may be attached to the high pressure rubber hose 6 by hand. Further, the first arm 1 and the second arm 2 may be attached to the high pressure rubber hose 6 by being tightened with an elastic body such as rubber or a screw. By comprising in this way, the 1st roller 4 and the 2nd roller 5 can be press-contacted to the outer surface of the high pressure rubber hose 6, and it rotates so that the 1st roller 4 and the 2nd roller 5 may not slip reliably. Thus, the first arm 1 and the second arm 2 can be moved, which contributes to the measurement of the length L of the high-pressure rubber hose 6 with high accuracy.

  As in the first embodiment, the second embodiment of the present invention shown in FIG. 6 includes a first arm 11 and a second arm 12, and a shaft 13 that connects the first arm 11 and the second arm 12. A first roller 14 attached to the first arm 11 and a second roller 15 attached to the second arm 12 are provided, and one of the first arm 11 and the second arm 12 is provided with, for example, a second arm 12 is provided with a scale 16 that is used to measure the thickness of a pipe, for example, the high-pressure rubber hose 6. The other of the first arm 11 and the second arm 12, that is, the first arm 11 has a diameter of the high-pressure rubber hose 6. The extending portion 11a is provided in which the tip portion is displaced on the scale 16 according to the size.

  The second embodiment configured as described above also includes the first roller 14 attached to the first arm 11 and the second roller 15 attached to the second arm 12, and thus is equivalent to the first embodiment. The effect of this can be obtained.

  In the second embodiment, each of the first roller 14 of the first arm 11 and the second roller 15 of the second arm 12 is made high-pressure in a state where the scale 16 is formed in relation to the diameter of the high-pressure rubber hose 6. The diameter of the high-pressure rubber hose 6 can also be measured by checking the scale 16 where the tip of the extended portion 11a is located when the rubber hose 6 is brought into contact with the outer surface.

DESCRIPTION OF SYMBOLS 1 1st arm 2 2nd arm 3 axis | shaft 4 1st roller 5 2nd roller 6 High pressure rubber hose (pipe)
7 arrow 11 first arm 11a extending portion 12 second arm 13 shaft 14 first roller 15 second roller 16 scale

Claims (4)

Used when measuring the length of a long body,
An arm provided along the outer periphery of the elongated body, and a rotation detection means that is rotatably attached to the arm so as to contact the outer peripheral surface of the elongated body, and detects and calculates the rotational speed and the rotational angle. With a roller connected to the
A dimension measuring tool characterized in that the length of the elongated body is measured by the rotation detecting means based on the rotation of the roller accompanying the movement of the arm in the extending direction of the elongated body. Ingredients. In the dimension measuring jig according to claim 1,
The elongated body is made of piping,
Each of the arms is composed of a curved first arm and a second arm arranged so as to surround the pipe,
A shaft that rotatably connects the first arm and the second arm;
The dimension measuring jig, wherein the roller is composed of a first roller mounted on the first arm and a second roller mounted on the second arm. In the dimension measuring jig according to claim 2,
One of the first arm and the second arm is provided with a scale used for measuring the pipe,
A dimension measuring jig, wherein an extension portion having a tip portion displaced on the scale according to the diameter of the pipe is provided on the other of the first arm and the second arm. In the dimension measuring jig according to claim 2 or 3,
The pipe is composed of a high pressure rubber hose that is connected to a hydraulic power unit provided in a hydraulic elevator and a hydraulic jack for raising and lowering a car and is held in a bent shape.