JPH0142236Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is applicable to ship propulsion shaft systems, rotating shaft systems of general machinery,
This invention relates to a telemeter mounting device used for measuring torque and stress on rolls of iron-making machinery.

Generally, a rotating shaft, a roll, or other shaft to be measured is provided with a loop-shaped transmitting antenna surrounding it, a transmitter, a battery, and a sensor, and a fixed body near the transmitting antenna is equipped with a vertical receiving antenna or A loop-shaped receiving antenna is installed that surrounds the shaft to be measured, and a telemeter system is used to obtain torque and stress measurement data. However, in conventional telemeter mounting devices, the loop-shaped transmitting antenna can be wrapped around a support protruding radially from the surface of the shaft to be measured or a fixture attached to the surface, without disassembling the shaft to be measured. However, it is not possible to firmly and easily mount the receiving antenna concentrically to the shaft to be measured while maintaining a perfect circle.Also, the loop-shaped receiving antenna uses its own rigidity to maintain a true circle concentrically to the shaft to be measured. It is necessary to arrange them in a circle, but this is also difficult. Therefore, the radio waves are not stable and it is not only impossible to obtain highly accurate measurement data, but also
There was a problem that the telemeter could not be installed easily.

The present invention was devised to solve the above-mentioned conventional problems, and the loop-shaped transmitting and receiving antennas are each fixed to the opposing circumferential parts of a support ring made of an insulating material, and the antennas are divided in the circumferential direction together with the support ring. The support ring can be connected by assembling the support ring, and each of the divided parts of the transmitting side support ring is fixed to a circumferentially divided fixture that can be freely attached to the shaft to be measured. The object of the present invention is to provide a telemeter mounting device that allows a transmitting and receiving antenna to be firmly and easily mounted through each support ring without disassembling the telemeter while maintaining a perfect circle concentrically with the shaft to be measured.

Hereinafter, the present invention will be explained with reference to illustrative embodiments.

In the figure, reference numeral 1 denotes a ring-shaped fixture, which is composed of divided bodies 1a and 1b divided into two in the circumferential direction, and a bolt 3 is inserted between the divided bodies 1a and 1b at opposite ends.
Connecting holes 4 through which the parts can be inserted are formed, and horizontal holes 5 are formed in the intermediate portion at intervals in the circumferential direction. The fixture 1 is constructed by arranging the divided bodies 1a and 1b to face each other via the shaft S to be measured, inserting a bolt 3 between the opposing ends, and screwing and tightening a nut 6 onto the bolt 3. The shaft body S to be measured
is hugged by.

Reference numeral 7 denotes a movable side support ring made of an insulating material such as FRP (fiber-reinforced plastic) having a size that follows the outer peripheral part of the side surface of the fixture 1, and a divided body 7a that is divided into two in the circumferential direction. ,7b
Horizontal holes 8 are formed at intervals in the circumferential direction on the inner periphery of the divided bodies 7a, 7b, and grooves 9, 9 are provided on the outer periphery. 9 includes a loop-shaped transmitting antenna 10, respectively.
The divided bodies 10a, 10 are divided into two in the circumferential direction.
b is fixed with the inner peripheral side embedded by fitting and adhesion with an adhesive (not shown). 1
1 is a support pipe made of insulating material such as FRP,
It is interposed between the fixture 1 and the movable support ring 7, with corresponding horizontal holes 5 and 8 facing each other.
The divided bodies 7a and 7b of the movable support ring 7 are assembled by screwing nuts 13 onto bolts 12 inserted through the corresponding horizontal holes 5 and 8 through the support pipes 11 and tightening them.
a, 1b, and the divided bodies 7a,
They are connected to each other by bolting of a joint plate 14 that spans across the opposing ends of the parts 7b. The divided bodies 10a and 10b of the transmitting antenna 10 are connected by such an assembly of the movable support ring 7, and are arranged concentrically with the shaft body s to be measured.

Reference numerals 15 and 16 denote fixed side support rings made of an insulating material such as FRP, which are each divided into two parts 15a, 15b, 16a, and 16b in the circumferential direction. Brackets 17 made of an insulating material such as FRP are provided at intervals, and the divided bodies 16a, 1
Recessed grooves 18, 18 are provided in the inner circumference of the loop-shaped receiving antenna 19, respectively.
a and 19b are fixed with their outer peripheral sides embedded by fitting and adhesion with an adhesive (not shown). The divided bodies 15a and 15b of the fixed side support ring 15 are fixed at the divided body 15b to a fixed body (not shown) near the transmitting antenna 10, and are opposed to each other with the shaft body S to be measured interposed therebetween. They are connected to each other by bolting joint plates (not shown) that span across the opposing ends of the respective parts.

Divided body 16a, 1 of fixed side support ring 16
6b are attached to the split bodies 15a and 15b of the stationary side support ring 15 by being attached to the bracket 17 and fixed with bolts, respectively, and are attached across the opposing ends of the split bodies 16a and 16b. The joint plates 20 are connected to each other by bolts. Divided body 19 of receiving antenna 19
a, 19b are such fixed side support rings 1
5 and 16, and are arranged concentrically with the shaft S to be measured and facing the transmitting antenna 10 on the outside thereof.

Reference numeral 21 denotes a tachometer sensor, and 60 sheets are affixed to the side surface of the movable side support ring 7, evenly distributed at a pitch of 6 degrees.

Cases 22 and 23 are made of high-strength aluminum and are provided symmetrically around the outer periphery of the divided bodies 1a and 1b of the fixture 1, and are used to house a transmitter and a power battery, respectively.

In the above configuration, since the transmitting antenna 10 and its mounting mechanisms 1 and 7 and the receiving antenna 19 and its mounting mechanisms 15 and 16 are split in half, they can be easily attached and detached without disassembling the shaft body S to be measured.

Due to their mounting mechanism, the transmitting and receiving antennas 10 and 19 can be firmly mounted concentrically with the shaft S to be measured while maintaining a perfect circle, and are also sufficiently separated and insulated from the transmitter in the case 22 and the shaft S to be measured. Since it can be installed in a fixed position, the radio waves can be stabilized. In addition, the sensor 21 of the tachometer is attached to the movable support ring 7 instead of the shaft body S to be measured, increasing the distance between the sensors, making sensor placement easy and accurate, and providing an accurate signal of 60 pulses per rotation. is obtained. Therefore, more accurate measurement data can be obtained.

In addition, the cases 22 and 23 are provided on the fixture 1 so that they can be used to store the transmitter and power battery even if the shaft body S to be measured has a different diameter. There is no need to take the trouble of installing it using tools etc.

In this embodiment, the transmitting/receiving antenna and its mounting mechanism are divided into two parts, but they may be divided into three parts or the like.

As described above, in the present invention, since the transmitting/receiving antenna and its mounting mechanism have a split structure, they can be easily attached and detached without disassembling the shaft to be measured. In addition, due to its mounting mechanism, the transmitting and receiving antenna can be firmly mounted concentrically with the shaft to be measured while maintaining a perfect circle, and the sensor can be placed sufficiently away from the transmitter and the shaft to be measured.
In addition, it is possible to insulate the sensor, and to expand the distance between the sensors, so that more accurate measurement data can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view partially showing an embodiment of the present invention in cross section, and FIGS. 2 and 3 are the ~ line in FIG.
A line sectional view, FIG. 4 is a partially enlarged view of the sectional portion of FIG. 1. S... Shaft body to be measured, 1... Mounting tool, 7... Movable side support ring, 10... Transmission antenna, 11
...Support pipe, 12...Bolt, 13...
Nut, 14, 20... Joint plate, 15, 16...
Fixed side support ring, 17...bracket, 1
9...Receiving antenna.

Claims (1)

[Scope of utility model registration request] A fixture divided in the circumferential direction is attached to the shaft to be measured, a loop-shaped transmitting antenna is provided to the shaft to be measured via the fixture, and the transmitting antenna is attached to a fixed body near the transmitting antenna. In a telemeter mounting device provided with a loop-shaped receiving antenna facing the antenna, the mounting device includes a movable member made of an insulating material divided in the circumferential direction along the side surface of the mounting device and the circumferential surface of the shaft to be measured. Attach the side support ring,
A loop-shaped transmission antenna divided in the circumferential direction that is connected to each other when the movable support ring is assembled is fixed to the outer periphery of the movable support ring, and a sensor is provided on the side surface of the movable support ring, A fixed side support ring made of an insulating material divided in the circumferential direction is attached to the fixed body along the circumferential surface of the shaft body to be measured, and the support ring is assembled on the inner circumference of the fixed side support ring. A telemeter mounting device characterized by fixing loop-shaped receiving antennas divided in the circumferential direction and connected to each other.