JP5716138B1 - Sensor fixture - Google Patents

Abstract

A clamp body 1, a sensor 9 screwed to the center of the clamp body 1, clamp arms 2 and 3 attached to the left and right of the clamp body 1, clamp rollers 4 and 5 provided on the clamp arms 2 and 3, and a clamp The sensor fixing device 100 is constituted by the fixing bolts 15 attached to the lower ends of the arms 2 and 3. The sensor 9 can be easily and firmly fixed by supporting the sensor attachment portion at three points by the sensor 9 attached to the clamp body 1 and the clamp rollers 4 and 5 of the left and right clamp arms 2 and 3.

Description

  The present invention relates to a sensor fixing device for fixing a sensor attached to an annular part or a polygonal part such as various valves, steam traps, or pipes.

  As a conventional sensor fixing device, a sensor is attached to a rotating shaft, and is composed of a long band wound around the rotating shaft and a stopper provided with a ratchet mechanism portion inserted into the band. There is one that can be attached with a single fixing device from small to large (for example, see Patent Document 1).

  In this sensor fixing device, since a long band is used, the sensor may not be fixed firmly.

Japanese Utility Model Publication No. 62-82407

  Therefore, the problem to be solved by the present invention is to provide a sensor fixing device that can fix a sensor easily and firmly without using a band.

In order to solve the above problems, the sensor fixing device of the present invention includes:
A sensor fixing device attached to the sensor mounting portion,
The sensor fixing device includes a clamp body, two clamp arms, and a fixing bolt,
The clamp body is
A sensor fixing portion for fixing the sensor to the upper center of the sensor mounting portion;
Two rotation connecting portions that rotatably connect the clamp arm at each position extending left and right from the sensor fixing portion,
Each of the two clamp arms is
When the two clamp arms sandwich the sensor mounting portion from the left and right, a clamp roller that abuts at a symmetrical position of the sensor mounting portion,
The fixing bolt is
A lower portion of the clamp roller is provided with a tightening portion that couples and tightens the two clamp arms.

  According to the disclosure of the present specification, it is possible to fix the sensor easily and firmly.

It is a figure which shows an example of the front view of the sensor fixing fixture concerning the 1st Embodiment of this invention. It is a figure which shows an example of the left view of the sensor fixing device concerning the 1st Embodiment of this invention. It is a figure which shows an example of the front view of the sensor fixing device concerning the modification of this invention. It is a figure which shows an example of the front view of the sensor fixing device concerning the modification of this invention.

  Hereinafter, preferred embodiments of the sensor fixing device of the present invention will be described with reference to the drawings. In the following description, the present invention will be described by exemplifying a case in which an elongated cylindrical sensor tip is contacted and fixed to a pipe having an annular cross section. Moreover, the dimension of the structural member in each figure does not faithfully represent the actual dimension of the structural member, the dimensional ratio of each structural member, or the like.

[First Embodiment]
FIG. 1 is a diagram illustrating an example of a front view of a sensor fixing device according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a left side view of the sensor fixing device according to the first embodiment of the present invention.

  As shown in FIG. 1, the sensor fixing device 100 includes a clamp body 1, clamp arms 2 and 3 attached to the left and right of the clamp body 1, and a fixing bolt 15. The clamp arms 2 and 3 include clamp rollers 4 and 5.

  The clamp main body 1 can be manufactured by, for example, cutting out aluminum or aluminum die casting. Each of the clamp arms 2 and 3 can be manufactured by, for example, stacking two thin stainless steel plates having a thickness of about 1 mm to 5 mm at intervals. The clamp arms 2 and 3 are connected to the left and right ends of the clamp body 1, respectively.

  A sensor fixing portion 8 for fixing the sensor 9 is provided near the center of the clamp body 1. The sensor fixing part is produced by cutting a female screw at the upper center of a pipe (sensor mounting part), for example, and the sensor 9 with the male screw cut can be fixed by screw connection.

  A lock nut 10 for fixing the sensor 9 to the clamp body 1 more securely is attached to the upper end of the clamp body 1. By tightening the lock nut 10, loosening between the sensor 9 and the sensor fixing portion 8 can be prevented.

  The front end portion 12 of the sensor 9 constitutes a first support point for the pipe 11 by contacting the outer surface of the pipe 11 having an annular cross section. The sensor 9 can measure the temperature and vibration of the pipe 11 by contacting the pipe 11. For example, the sensor 9 can measure the temperature of the contact point of the pipe 11 with a thermocouple. For example, the sensor 9 can measure vibration generated in the pipe 11 by the piezoelectric element.

  The two stainless steel thin plates constituting the clamp arms 2 and 3 are rotatably connected at the left or right end portion of the clamp body 1 using rivets 6 and 7 (rotation connecting portions). For example, in FIG. 1, the clamp arm 2 is connected to the left end portion using a rivet 6 toward the paper surface of the clamp body 1, and the clamp arm 3 is connected to the right surface of the clamp body 1 using a rivet 7. It is connected to the end of the.

  The clamp arm 2 and the clamp arm 3 have a substantially symmetrical S shape. The clamp arm 2 includes the clamp roller 4 slightly below the central portion in the longitudinal direction of the clamp arm 2, and the clamp arm 3 includes the clamp roller 5 slightly below the central portion in the longitudinal direction of the clamp arm 3.

  For example, the clamp arm 2 includes a first bending portion 2a and a second bending portion 2b, and the clamp roller 4 is disposed at a turning portion between the first bending portion 2a and the second bending portion 2b. For example, the clamp arm 3 has the 1st curved part 3a and the 2nd bay part 3b, and arrange | positions the clamp roller 5 in the turning part between the 1st curved part 3a and the 2nd curved part 3b.

  The clamp rollers 4 and 5 have a disk shape with a thickness, and are rotatably mounted between two stainless steel thin plates of the clamp arms 2 and 3 by roller pins 13 and 14, respectively. The clamp rollers 4 and 5 are disposed at positions where the pipe 11 can come into contact with the outer periphery of the pipe 11 at a symmetrical position from the center of the pipe 11 when the pipe 11 is sandwiched between the two clamp arms 2 and 3 from the left and right. Thereby, the 2nd and 3rd support point with respect to the piping 11 can be comprised in the part (circle contact) where the thickness part of the clamp rollers 4 and 5 and the piping 11 contact | connect.

  The second and third support points are arranged at a distance from each other on the circumference opposite to the first support point by the tip 12 of the sensor 9 with respect to the circle of the pipe 11 having an annular cross section. Thus, the sensor fixing device 100 can be firmly fixed to the pipe 11. Note that the center angle of the circle formed by the first support point, the center of the circle of the pipe 11 and the second or third support point is desirably 120 degrees or the vicinity thereof. In particular, the center angle of the circle formed by the second support point, the center of the circle of the pipe 11 and the third support point is preferably 180 degrees or less.

  Pivot members 16 and 17 are attached to the lower ends of the clamp arms 2 and 3 via rotary shafts 18 and 19, respectively. Fixing bolts 15 are attached so as to penetrate the pivot members 16 and 17, respectively.

  A nut 20 is screwed to the left end of the fixing bolt 15 in the paper surface direction. By clamping the nut 20 to the fixing bolt 15, the clamp body 1 and the clamp arms 2 and 3 are securely fixed to the pipe 11.

  The nut 20 may be fixed by tightening the fixing bolt 15 using a so-called quick nut. Moreover, as above-mentioned, the clamp arms 2 and 3 of this invention can respond | correspond widely with the diameter of the piping 11 by having 1st curved part 2a, 3a. Furthermore, since the clamp rollers 4 and 5 can roll the outer peripheral part of the piping 11, the clamp arms 2 and 3 can clamp the piping 11 in a suitable support position at the time of attachment.

  Moreover, in the above, although the example which attaches the sensor fixing tool 100 to piping was demonstrated, as an example other than piping, attaching to the cross-sectional annular part or cross-sectional polygonal part in the inlet side or outlet side of various valves and steam traps. You can also.

[Modification]
In the above description, the configuration in which the clamp body 1 and the clamp arms 2 and 3 are directly connected has been shown. Good.

  3 and 4 are views showing an example of a front view of a sensor fixing device according to a modification of the present invention. FIG. 3 shows an example of the sensor fixing device 101 in which the first extension arms 21 and 31 are respectively attached between the clamp body 1 and the clamp arms 2 and 3. FIG. 4 shows an example of the sensor fixing device 102 in which the first extension arms 21 and 31 and the second extension arms 22 and 32 are respectively attached between the clamp body 1 and the clamp arms 2 and 3.

  In this way, by attaching one or more extension arms between the clamp body 1 and the clamp arms 2 and 3, the clamp rollers 4 and 5 are arranged at appropriate positions according to the diameter of the pipe 11. The sensor fixing device 100 can be securely attached.

  INDUSTRIAL APPLICABILITY The present invention can be used as a sensor fixing device that can easily and firmly fix sensors attached to various valves, steam traps, or annular parts such as pipes or polygonal parts.

1 Clamp body 2, 3 Clamp arm 4, 5 Clamp roller 9 Sensor 11 Piping 15 Fixing bolt 16, 17 Pivot member

Claims (9)

A sensor fixing device attached to the sensor mounting portion,
The sensor fixing device includes a clamp body, two clamp arms, and a fixing bolt,
The clamp body is
A sensor fixing part for fixing the sensor so that the sensor tip comes into contact with the sensor mounting part;
Two rotation connecting portions that rotatably connect the clamp arm at each position extending left and right from the sensor fixing portion,
Each of the two clamp arms is
When the two clamp arms sandwich the sensor mounting portion from the left and right, a clamp roller that abuts at a symmetrical position of the sensor mounting portion,
The fixing bolt is
A sensor-fixing instrument comprising: a clamping portion that couples and clamps the two clamp arms at a lower portion of the clamp roller.   The sensor fixing device according to claim 1, wherein the sensor fixing portion is provided near a center of the clamp body. The sensor mounting portion is a pipe having an annular cross section,
The sensor fixture according to claim 1 or 2, wherein the sensor measures temperature or vibration on an outer surface of the pipe. The sensor is in contact with the pipe at the upper center of the cross-sectional circle of the pipe,
The sensor fixing device according to any one of claims 1 to 3, wherein the clamp roller is in contact with the pipe at a lower portion than a center of a cross-sectional circle of the pipe. The two clamp arms have a substantially symmetrical S shape,
The sensor fixing device according to any one of claims 1 to 4, wherein the clamp roller is provided between two curved portions constituting the S-abbreviated shape. A pivot member is attached to the end of the two clamp arms on the opposite side of the sensor fixing part via a rotation shaft,
The sensor fixing according to any one of claims 1 to 5, wherein the tightening portion connects and tightens the two clamp arms by tightening a fixing bolt and a nut penetrating the pivot member, respectively. Instruments.   The sensor fixing device according to claim 6, wherein the nut constituting the tightening portion is a quick nut.   Each of the said 2 clamp arms is a sensor fixing instrument as described in any one of Claims 1-7 comprised from the several arm member. Each of the two clamp arms is composed of two thin plates,
9. The clamp roller according to claim 1, wherein the clamp roller has a disk shape with a thickness, and is rotatably attached between two thin plates constituting the clamp arm. Sensor fixing device.

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