JPH09325090A - Dynamic state measurement method of transmission belt and its measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To predict a defect occurring at a transfer belt in rotation by measuring, under the same condition, dynamic state of the transmission belt in synchronous manner on time-base, for obtaining the data user the same running condition. SOLUTION: In order to predict a defect of a transmission belt 6 which is stretched between a driving side pulley 11 and a driven-side pulley 13 and is cyclically rotated by the driving side pulley 11, related to a method for measuring dynamic state of the transmission belt 6 which is rotating, the measurement of the transmission belt 6 is performed about, at least, the number of rotations of the driving side pulley 11, the number of rotations of a driven-side pulley 12, a tension applied to the transmission belt 6 being cyclically rotated, and the surface temperature of the transmission belt 6. The measurement about the transmission belt 6 is performed in synchronous manner and on time-base, and a measurement result is recorded and outputted in synchronous manner and on time-base.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring a dynamic state of a transmission belt and a dynamic state measuring system for predicting a failure of the transmission belt.

[0002]

2. Description of the Related Art In developing a power transmission belt which is suspended between a driving pulley and a driven pulley and transmits the rotation of the driving pulley to the driven pulley, a failure mode (tension reduction, slippage) of this driving belt is developed. It is important to confirm the increase (increase, increase in heat generation, etc.) under the same conditions. In particular, a failure such as breakage or cutting of the power transmission belt that suddenly occurs during use occurs as a sign that the belt stretches (changes in tension), the belt slips, or the amount of heat generated by the belt increases. Changes in the dynamic state of the belt (belt tension,
It can be predicted by checking the slip of the belt, the heat value of the belt, etc.). Also, from this prediction,
It is possible to effectively proceed with the development of the transmission belt, such as selecting an appropriate material having heat resistance and durability that meet the conditions and taking measures against appropriate dimensional specifications.

[0003]

However, conventionally, the dynamic characteristics of the transmission belt, such as tension, slip, and heat generation amount, have been measured by separate tests, and then the measured data are compared. When the tests were performed individually, the running of the transmission belt for each test was not always performed in the same state, and it was not possible to accurately predict the occurrence of a failure. Even if a failure occurs, it is difficult to understand the cause because the data is not prepared.

The present invention has been made to solve such a problem. By measuring the dynamic state of the transmission belt under the same conditions synchronously and with time, it is possible to obtain data under the same running conditions. It is an object of the present invention to provide a measuring method capable of predicting a failure that occurs in a rotating transmission belt from data under the running conditions, and a measuring system therefor.

[0005]

In order to solve the above-mentioned problems, the present invention according to claim 1 is provided so as to be stretched between a driving pulley and a driven pulley and circulated and rotated by the driving pulley. In order to predict the failure of the transmission belt, the method of measuring the dynamic state of the rotating transmission belt,
(1) At least the rotational speed of the driving pulley, the rotational speed of the driven pulley, the tension applied to the circulatingly rotating transmission belt, and the circulatingly rotating transmission are measured for the transmission belt. Perform the surface temperature of the belt, (2)
The measurement of the power transmission belt is performed synchronously and with time, and (3) the result of the measurement is synchronously recorded and output with time.

According to another aspect of the present invention, in order to predict a failure of the transmission belt which is stretched between the driving pulley and the driven pulley and is circulated and rotated by the rotation of the driving side, the dynamic of the belt is predicted. In the system for measuring the state, the measurement of the dynamic state of the transmission belt is applied to at least the rotation speed of the driving pulley, the rotation speed of the driven pulley, and the transmission belt that is circulated and rotated. The tension and the surface temperature of the circulatingly rotated transmission belt are measured, the means for measuring the rotational speed of the driving pulley, the means for measuring the rotational speed of the driven pulley, and the circular rotation. Means for measuring the tension of the power transmission belt, means for measuring the surface temperature of the power transmission belt that is circulated and rotated, and each measurement data that is measured synchronously with time by each of the measurement means are input and recorded. hand When, and means for outputting the measurement data the recorded and is characterized by comprising comprises.

As a result, at least the rotational speed of the driving pulley, the rotational speed of the driven pulley, the magnitude of the tension applied to the circularly rotated transmission belt, and the heat generated from the circularly rotated transmission belt. Under the same conditions as the temperature of
Since it can be measured and recorded over time, these data are used to compare the slip ratio, which indicates the dynamic characteristics of the transmission belt, the tension change of the transmission belt, and the temperature change of the transmission belt, and the failure of the transmission belt occurs. Can make predictions.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A method for measuring a dynamic state of a transmission belt and a system for measuring a dynamic state of a transmission belt according to an embodiment of the present invention will be described below with reference to the drawings.

First, in FIGS. 1 and 2, reference numeral 1 is a system for measuring the dynamic state of a transmission belt, which is a drive motor 2 on the drive side, and a rotation speed on the drive side for measuring the rotation speed of the drive motor 2. Between the measuring means 3, the driven side rotating means 4 to be the driven side, the driven side rotational speed measuring means 5 for measuring the rotational speed of the driven side rotating means 4, the drive motor 2 and the driven side rotating means 4. Temperature measuring means 7 for measuring the surface temperature of the stretched transmission belt 6, tension measuring means 8 for measuring the tension of the transmission belt 6, and each of the measurement means 3, 5, 7, 8 described above. It is mainly composed of a measurement data recorder 9 which automatically records measurement data and outputs it to recording paper or the like when necessary, and when data of failure prediction of the transmission belt 6 is needed. Is synchronized with each of the measuring means 3, 5, 7, 8 and continuously, Rotational speed of movement pulley, rotational speed of the driven pulley, it is possible to perform granted tension transmission belt 6, and measures the surface temperature of the transmission belt 6 and the recording,
Further output can be made.

The drive motor 2 has a drive side rotary shaft 10 penetrating the motor body 2A, and a drive side pulley 11 is fixed to one end of the rotary shaft 10. The driven-side rotating means 4 has a driven-side rotating shaft 12 which is rotatably supported at a predetermined interval in a direction orthogonal to the axial direction of the power-side rotating shaft 10,
It has a driven pulley 13 fixed to the tip of the driven rotating shaft 12, and the driven pulley 13 projects into the belt test box 14 together with the driving pulley 11. The transmission belt 6 is, for example, a flat belt, an endless friction transmission belt such as a V-belt or a V-ribbed belt, or a meshing transmission belt of a toothed belt, and the belt is a pulley that protrudes into the belt test box 14. 1
It is abutted on or fitted to the cables 1 and 13 and stretched.

The drive side rotation speed detecting means 3 is a drive motor 2.
Of the driving side gear 20 fixed to the power side rotating shaft 10 at the opposite end to which the driving side pulley 11 is fixed, and an electromagnetic type arranged with a predetermined gap with respect to the outer peripheral surface of the driving side gear 20. It has a sensor 21 and a drive side rotation counter 22 that processes the pulse signal a from the electromagnetic sensor 21.
Then, the drive motor 2 is driven to rotate the drive-side gear 20 together with the drive-side rotary shaft 10, and the electromagnetic sensor 21 is formed with a predetermined pitch over the outer peripheral surface of the drive-side gear 20. The pulse signal a is sent to the drive side rotation counter 22 each time it opposes each convex portion 20A. Then, the drive side rotation counter 22 to which the pulse signal a from the electromagnetic sensor 21 is input counts the pulse signal a. The convex portion 20A whose count number is formed on the drive side gear 20
Is reached, it is determined that the drive side rotating shaft 10 of the drive motor 2 has made one rotation, and the result of this determination is the drive side rotation counter 2
Measured data recorder 9 from 2 to drive side rotation speed data A
To send to.

The driven-side rotation speed detection means 5 has the same structure as the drive-side rotation speed detection means 3. That is, the driven-side rotation speed detecting means 5 includes the driven-side gear 2 installed on the opposite side of the driven-side pulley 13 installed at the end of the driven-side rotating shaft 12.
5, an electromagnetic sensor 26 arranged with a predetermined gap from the outer peripheral surface of the driven gear 25, and a driven rotation counter 27 that processes the pulse signal b from the electromagnetic sensor 26. Have In this counter 27, the count number of the pulse signal b from the electromagnetic sensor 26 is
When the number of the convex portions 25A formed at a predetermined pitch in 5 is reached, it is determined that the driven-side rotation shaft 12 has made one rotation, and the determination result is sent to the measurement data recorder 9 as the driven-side rotation speed data B.

The temperature measuring means 7 is the belt test box 1
4 is a thermocouple sensor arranged in the vicinity of the surface of the transmission belt 6 existing inside 4, and measures the surface temperature signal f (surface temperature data F) from the thermocouple sensor according to the surface temperature of the transmission belt 6. It is sent to the recorder 9. The temperature measuring means 40 is a thermocouple sensor for measuring the temperature inside the belt test box 14, and the temperature measuring means 41 is a thermocouple sensor for measuring the temperature outside the belt test box 14. The temperature signals g and h (in-box temperature data G, out-of-box temperature data H) are sent to the measurement data recorder 9 in accordance with the temperature of.

On the other hand, the tension detecting means 8 includes a transmission belt 6 existing in the belt test box 14, a tension measuring pulley 30 that abuts on or fits to the belt 6, and a tension to which the pulley 30 is fixed. A measuring rotary shaft 31, a housing 32 that rotatably supports a side of the rotary shaft 31 that projects from the belt test box 14, a guide mechanism 33 that allows the housing 32 to move, and a load cell 34.
It is composed of a tension measuring device 35. Guide mechanism 33
Is a pair of guide rails 37 provided on the bottom of a base bracket 36 having an L-shaped cross section arranged between the drive motor 2 and the driven-side rotation means 4, and traveling that is allowed to travel on the guide rails 37. The traveling body 38 has the housing 32 fixed thereto. In addition, the guide mechanism 3
The guide rail 37 of No. 3 extends in a direction orthogonal to the axial direction of the drive-side rotary shaft 10 and orthogonal to the direction in which the transmission belt 6 circulates. The load cell 34 is disposed between the side wall 36A of the base bracket 36 and the housing 32, and is engaged with and abutted on each of them. Accordingly, when the transmission belt 6 is circulated and rotated between the driving pulley 11 and the driven pulley 13, the tension measuring pulley 30 abuts or fits on the transmission belt 6 to transmit power. The lever pulley 30 rotates and is moved so that the housing 32 approaches or separates from the load cell 34 in a direction perpendicular to the circulating rotation of the transmission belt 6. The load cell 34 detects the tension applied to the transmission belt 6 due to the proximity or separation of the housing 32, and sends a tension signal c to the tension calculator 35. The tension calculation unit 35, to which the tension signal c is input, performs predetermined processing to create tension data C,
The data C is sent to the measurement data recorder 9.

Reference numeral 45 denotes a driven pulley load measuring means, and a transmission shaft 47 frictionally engaged with the outer peripheral surface of a disk body 46 fixed to the tip of the driven rotating shaft 12 opposite to the driven pulley 13. The transmission shaft 47 includes a load cell 48 that abuts and engages with the tip end portion on the opposite side of the friction engagement side. The transmission belt 6 includes the driving pulley 11 and the driven pulley 1.
3, the transmission shaft 47 is simultaneously frictionally engaged with the load cell 48, and the load cell 48 detects the pressing force generated by the frictional engagement of the transmission shaft 47.
Is sent to the load measuring device 49. The load measuring instrument 49 that has received the load signal i performs a predetermined process and sends it as the load data I to the measurement data recording instrument 9.

The rotation speed detecting means 3 of the driving pulley 11, the rotation speed detecting means 5 of the driven pulley 13, the surface temperature detecting means 7 of the transmission belt 6, the tension detecting means 8 of the transmission belt 6, and the temperature in the test box 14. Detection means 40, test box 1
4 outside temperature detecting means 41, driven pulley load detecting means 4
5, each of the data transmitted from the drive side, the drive side pulley rotation speed data A, the driven side pulley rotation speed data B, the belt surface temperature data C, the belt tension data F, the data inside the box G, the data outside the box H, and the belt load data I. The input measurement data recorder 9 stocks data synchronously and chronologically, and outputs the data on a predetermined recording sheet at the same time or when necessary, as needed.

Transmission belt 6 in the embodiment of the present invention
The system 1 for measuring the dynamic state of is configured as described above. Next, a method for measuring the dynamic state of the transmission belt 6 will be described.

First, the drive motor 2 is rotationally driven, and each detecting means, the rotating speed detecting means 3 of the driving side pulley 11, the rotating speed detecting means 5 of the driven side pulley 13, the surface temperature detecting means 7 of the transmission belt 6, When the tension detecting means 8 of the transmission belt 6, the temperature detecting means 40 inside the test box 14, the temperature detecting means 41 outside the test box 14 and the driven pulley load detecting means 45 are operated, the transmission belt 6 causes the drive side pulley 11 to move. While being circulated and rotated, the driven belt 13 interlocks with the driven pulley 13 to rotate.
The drive side rotary shaft 10 having the drive side pulley 11 fixed to one end rotates, and the driven side rotary shaft 12 having the driven side pulley 13 fixed to one end is rotated, so that the drive side rotary shaft 10 is fixed to the other end of the rotary shaft. The driven-side gear 20 and the driven-side rotating shaft 12 are rotated, so that the driving-side gear 20 fixed to the other end of the rotating shaft 10 and the driven-side fixed to the other end of the rotating shaft 12. The gear 25 is rotated in the same direction as the pulleys 11 and 12. By rotating these gears 20 and 25,
Electromagnetic sensors 21 and 26 arranged at predetermined intervals detect the rotations of the gears 20 and 25, and a pulse signal a is output from this sensor 21 and a pulse signal b is output from the sensor 26. , 27 respectively. The rotation speed measuring device 22 measures the drive side pulley rotation speed data A of the rotating shaft 10, and the rotation speed measuring device 27 measures the driven side pulley rotation speed data B of the rotating shaft 12 for synchronous and time lapse. It is sent to the measurement data recorder 9.

At the same time, the housing 32 receives the tension applied to the transmission belt 6 from the transmission belt 6 via the tension measurement pulley 30 and the tension measurement rotary shaft 31 to which the pulley 30 is fixed. Become. When the housing 32 receives this tension, for example, the housing 32 is moved in a direction away from the load cell 34 via a guide mechanism 33 having a very small sliding resistance of the slide, and the movement of the housing 32 causes the load cell 34 to move. Transmission belt 6
It is detected that the tension is applied to the tension measuring device 35 and the detected tension signal c is output to the tension measuring device 35. The tension measuring device 35, to which the tension signal c is input, performs a predetermined process to measure the tension data C, and the measurement data recorder 9 synchronously and chronologically.
To send to.

At the same time, the measuring means 7 measures the surface temperature of the transmission belt 6, the measuring means 40 measures the temperature inside the test box 14, and the measuring means 41 measures the temperature outside the test box 14 to record the measured data. Each temperature signal c,
Send g and h. In this case, the temperature measuring device may be incorporated in the measurement data recorder 9 or may be provided between the measuring means 7, 40, 41 and the recorder 9. In the former case, the temperature data C, G, H will be measured in the recorder 9, and in the latter case, the temperature data C, G, H will be sent to the recorder 9. .

Further, when the driven-side rotary shaft 12 having the pulley 13 fixed to one end is rotated via the driven-side pulley 13, the disk body 46 fixed to the other end rotates. Since the transmission shaft 47 is frictionally engaged with the disc 46, the load cell 48 is located when the pressing force is applied by the transmission shaft 47 frictionally engaged with the rotation of the rotary disc 46. The load cell 48 detects the load applied to the driven-side rotary shaft 12 by receiving the pressing force, and sends the load signal i to the load measuring device 49. The measuring instrument 49 to which the load signal i is sent performs predetermined processing to measure the load data I, and sends the load data I to the measurement data recorder 9 synchronously and chronologically.

Each detecting means, that is, the rotation speed detecting means 3 of the driving side pulley 11, the rotation speed detecting means 5 of the driven side pulley 13, the surface temperature detecting means 7 of the transmission belt 6, the transmission belt 6
Data sent from the tension detecting means 8, the temperature detecting means 40 inside the test box 14, the temperature detecting means 41 outside the test box 14, and the driven pulley load detecting means 45, that is, the drive side pulley rotation speed dealer A, The measured data recorder 9 to which the driven pulley rotation speed data B, the belt surface temperature data C, the belt tension data F, the in-box data G, the out-box data H, and the belt load data I are input is the data A to I. Is output to a predetermined recording paper 50 synchronously and chronologically, as shown in FIG. The output may be displayed on a magnetic recording medium such as a floppy disk or a hard disk and displayed by a computer. Alternatively, the output may be displayed on a magneto-optical recording medium or the like and displayed by a computer.

As a result, the number of rotations of the drive pulley 11 of the drive motor 2 and the driven pulley 13 of the driven rotating means 4 are increased.
The rotational speed, the tension applied to the circulatingly rotating transmission belt 6, and the surface temperature of the circulatingly rotating transmission belt 6 can be measured synchronously with time and displayed as data. Based on these synchronous and time-dependent data, the slip ratio (the rotation speed of the driving pulley 11 / the rotation speed of the driven pulley 13), which is the dynamic characteristic of the transmission belt 6, the tension change of the transmission belt 6, By comparing changes in the surface temperature of the transmission belt 6 with each other, it is possible to predict a failure occurrence or a cause of the transmission belt 6. Belt load data I measured by the driven pulley load measuring means 45, in-box temperature data G measured by the temperature measuring means 40 inside the test box 14, and outside the box measured by temperature measuring means 41 outside the test box 14. From the temperature data H, it is possible to predict whether the circulating rotation state of the transmission belt 6 is appropriate and the cause thereof. As a result, an appropriate material can be selected as the constituent material of the power transmission belt 6, and various dimensions can be promptly and appropriately determined. Belt development can be promoted, and the heat resistance and durability of the developed belt can be further enhanced.

Further, in the method for measuring the dynamic state of the transmission belt according to the embodiment of the present invention, each detecting means, the rotational speed detecting means 3 of the driving pulley 11, the rotational speed detecting means 5 of the driven pulley 13, the transmission By using the surface temperature detecting means 7 of the belt 6, the tension detecting means 8 of the transmission belt 6, etc., the driving side pulley rotation speed data A, the driven side pulley rotation speed data B, the belt surface temperature data C, the belt tension data F, etc. The data is obtained synchronously and temporally, but is not limited to this, and data is obtained synchronously and temporally by appropriately combining the measuring means 3, 5, 7, 8 and the like. It may be the one that has been done. Further, in the method of measuring the dynamic state of the transmission belt and the measuring system thereof in the embodiment of the present invention, the case where the dynamic characteristic of one transmission belt 6 is measured is shown, but the present invention is not limited to this. Instead, the plurality of transmission belts 6 may be simultaneously rotated and rotated to measure the dynamic characteristics of each transmission belt 6. In this case, the driving-side rotary shaft 10 and the driven-side rotary shaft 13 projecting into the test box 14 are provided with the driving-side pulleys 11 and the driven-side pulleys 13 in parallel for the number of the transmission belts 6, and the transmission belts 6 are The tension measuring means 8 for measuring the change in tension may be arranged in each.

[0025]

As described above, according to the transmission belt dynamic state measuring method and the measuring system thereof of the present invention, the rotational speed of the driving pulley, the rotational speed of the driven pulley, and the circulating speed under the same traveling conditions. The tension applied to the rotating transmission belt,
It is possible to measure the surface temperature and the like of the transmission belt that is circulated and rotated synchronously and with time. It is possible to compare data changes of slip ratio, tension, and surface temperature of the transmission belt synchronously and over time under exactly the same running conditions that could not be obtained in the past. The failure of can be predicted quickly. Further, from this prediction, it is possible to obtain the basis for selecting an appropriate material for the transmission belt in a short period of time, so that development of a high-performance transmission belt having heat resistance and durability can be promoted.

[Brief description of drawings]

FIG. 1 is a schematic top view showing a system for measuring a dynamic state of a transmission belt according to an embodiment of the present invention.

FIG. 2 is a schematic side view showing a system for measuring a dynamic state of a transmission belt according to the embodiment of the present invention.

FIG. 3 is an example diagram showing a record in which each detection result obtained by measuring the dynamic state of the transmission belt in the embodiment of the present invention is directly output.

[Explanation of symbols]

 2 Drive Motor 3 Drive Side Rotation Counting Means 4 Driven Side Rotation Means 5 Driven Side Rotation Counting Means 6 Transmission Belt 7 Temperature Measuring Means 8 Tension Detecting Means

Claims (2)

[Claims] 1. A dynamic state of a rotating transmission belt in order to predict a failure of the transmission belt that is stretched between a driving pulley and a driven pulley and is circulated and rotated by the driving pulley. In the method of measuring (1), the transmission belt is measured at least by the number of rotations of the driving pulley, the number of rotations of the driven pulley, and the tension applied to the circulating rotation belt. The surface temperature of the circulating and rotating transmission belt is measured. (2) The measurement of the transmission belt is performed synchronously and with time. (3) The measurement result is recorded synchronously with time. A method for measuring the dynamic state of a transmission belt, which is characterized by outputting. 2. A dynamic state of a belt is stretched between a driving side pulley and a driven side pulley, and the dynamic state of the belt is measured in order to predict a failure of the transmission belt which is circulated and rotated by the rotation of the driving side. In the system, the dynamic state of the transmission belt is measured by at least the number of rotations of the driving pulley, the number of rotations of the driven pulley, the tension applied to the circulation belt rotated, The surface temperature of the circulatingly rotated transmission belt is measured, the means for measuring the rotation speed of the driving pulley, the means for measuring the rotation speed of the driven pulley, and the tension of the circulation belt rotated and rotated. A means for measuring, a means for measuring the surface temperature of the circulatingly rotated transmission belt, a means for inputting and recording each measurement data measured synchronously with time by each measuring means, and Record Dynamic state measurement system of transmission belts and means for outputting the measurement data, and characterized by including that.