JPH0577707U - Belt block strain measuring device - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to clarify the cause of damage to the belt block by enabling measurement of the magnitude and direction of the force applied to the belt block during belt operation. [Structure] During operation of the belt 3 hung between the pulleys 1 and 2, the strain gages attached to the positions of the belt block 4 sensitive to the respective forces in the pulley rotation direction and the radial direction. -When a signal corresponding to the magnitude of the distortion at that position is output from page 5, each output signal is converted into a radio signal in the telemeter transmitter 7, and the radio signal is transmitted in the form of radio waves. Is received by the receiver 12, the receiver 12 demodulates the radio signal into a distortion signal corresponding to the magnitude of the distortion, and records the distortion signal in the recorder 13 as distortion measurement data.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention measures the strain distribution of a belt block between pulleys during belt operation applied to pulleys of a continuously variable transmission and records the strain measurement data in the strain of the belt block. Regarding measuring device.

[0002]

[Prior Art]

 Conventionally, a belt block that constitutes a belt that is hung between pulleys of a continuously variable transmission may be damaged or chipped during operation, but the amount of force applied to the belt block and The direction in which the force was applied was unknown, and the cause of damage to the belt block was not clear.

[0003]

[Problems to be solved by the device]

 Since the cause of the damage to the belt block and the lack of resin, etc. was not clear as described above, the present invention makes it possible to measure the magnitude of the force applied to the belt block and the direction of the force applied during belt operation. However, clarifying the cause of damage to the belt block is a technical issue to be solved.

[0004]

[Means for Solving the Problems]

 The technical means for solving the above-mentioned problem is to measure the strain distribution of the belt block between the pulleys during belt operation applied to the pulleys and record the strain measurement data. A strain measuring device is attached to the belt block at a position sensitive to the respective forces in the pulley rotation direction and the radial direction, and a strain gauge for outputting a signal corresponding to the magnitude of the strain at that position. -A telemeter transmitter that converts the signal from the distortion gauge into a radio signal and outputs the radio signal is attached to the belt side, while receiving the radio signal from the telemeter transmitter and A configuration in which a receiver that demodulates and outputs a radio signal into a distortion signal corresponding to the magnitude of the distortion and a recorder that records the distortion signal from the receiver as distortion measurement data are provided at fixed positions. Is to

[0005]

[Action]

 According to the strain measuring device of the belt block having the above structure, the belt block is attached to the belt block position sensitive to the respective forces in the pulley rotation direction and the radial direction during the belt operation applied between the pulleys. When a signal corresponding to the magnitude of the distortion at that position is output from each of the distortion gauges, each output signal is converted into a radio signal in the telemeter transmitter and transmitted in the form of radio waves. To be done. When the radio signal output from the telemeter transmitter is received by the receiver, the receiver demodulates the radio signal into a distortion signal corresponding to the magnitude of the distortion and outputs the distortion signal to the recorder. To do. Then, the recorder records each distortion signal as distortion measurement data.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a system diagram schematically showing the overall configuration of an embodiment of the present invention. In FIG. 1, a belt block 4 of a belt 3 hung between the pulleys 1 and 2 is provided with strain gauges 5 at positions sensitive to the respective forces in the rotation directions of the pulleys 1 and 2, and in the radial direction. It is pasted. As shown in FIGS. 2 and 3, the strain gages 5 are attached to the belt block 4, four for measuring strain in the rotational direction of the belt block 4 and four for measuring radial direction. The voltage signal corresponding to the rotational distortion of the block 4 and the voltage signal corresponding to the radial distortion are output.

A telemeter transmitter 7 for inputting voltage signals from the respective strain gauges 5 to the belt 3 via the lead lines 6 of eight systems, and the telemeter transmitter 7 thereof. On the other hand, a transmitter power source 9 with a built-in battery for supplying a required power source through a power line 8 is provided. A transmission antenna 10 is attached to the telemeter transmitter 7, and when the voltage signals from the respective strain gauges 5 are input, the respective voltage signals are converted into radio wave signals, and the transmission antenna 10 outputs the signals. send. Further, the lead wire 6 and the power supply wire 8 are connected with a sufficient length so as to withstand vibration even when the belt 3 rotates.

On the other hand, a receiving antenna 11 is fixed to the outside of the belt 3 along the longitudinal direction of the belt 3 so that a radio wave signal from the telemeter transmitter 7 can be received via the transmitting antenna 10. Is configured. The receiving antenna 11 is connected to the receiver 12, and when the radio signal from the telemeter transmitter 7 is received by the receiving antenna 11, the received signal is input to the receiver 12. The receiver 12 amplifies the received signal, demodulates it into a voltage signal corresponding to the rotation direction distortion of the belt block 4 and a voltage signal corresponding to the radial direction distortion, and then demodulates the respective demodulated signals. Output to the recorder 13. The recorder 13 inputs the signal from the receiver 12, that is, the voltage signal corresponding to the rotational direction distortion of the belt block 4 and the voltage signal corresponding to the radial direction distortion, and distorts the respective voltage signals. Record as measurement data.

The recorder 13 outputs the recorded voltage signal corresponding to the rotational distortion of the belt block 4 and the recorded voltage signal corresponding to the radial distortion to a printer (not shown) connected to the outside or a personal computer. Etc., and print out the recorded distortion measurement data or display it on a computer screen as a graph.

[0010]

[Effect of the device]

 As described above, according to the present invention, during the operation of the belt applied between the pulleys, the respective strains attached to the belt block positions sensitive to the respective forces in the pulley rotation direction and the radial direction. When the gauge outputs a signal corresponding to the magnitude of distortion at that position, each output signal is converted into a radio signal in the telemeter transmitter, and the radio signal transmitted in the form of radio waves is converted. When received by the receiver, the receiver can demodulate the radio signal into a distortion signal corresponding to the magnitude of the distortion and record the distortion signal in the recorder as distortion measurement data. From the measured strain value of the belt block during belt operation, the force and direction applied to the belt block are clarified, and the cause of problems such as belt block damage and resin chipping can be found. Taking sniff a better operating conditions, it is possible to extend the life of the belt block I'll be making the state.

[Brief description of drawings]

FIG. 1 is a system diagram schematically showing the overall configuration of an embodiment of the present invention.

FIG. 2 is an explanatory view of mounting a strain gauge for detecting a rotational strain of the belt block.

FIG. 3 is an explanatory view of mounting a strain gauge for detecting radial strain of a belt block.

[Explanation of symbols]

 1 pulley 2 pulley 3 belt 4 belt block 5 strain gauge 6 lead wire 7 telemeter transmitter 8 power supply line 9 power supply for transmitter 10 transmitting antenna 11 receiving antenna 12 receiver 13 recorder

Claims (1)

[Scope of utility model registration request] 1. A belt block strain measuring device for measuring strain distribution of a belt block between pulleys during operation of a belt wound between pulleys and recording the strain measurement data. And a strain gauge which is attached to a position sensitive to the respective forces in the pulley rotation direction and the radial direction of the belt block and outputs a signal corresponding to the magnitude of strain at that position.
And a telemeter transmitter for converting a signal from the distortion gauge into a radio signal and outputting the radio signal, are attached to the belt side, and a radio signal from the telemeter transmitter is received and the radio signal is received. A receiver for demodulating and outputting a distortion signal corresponding to the magnitude of the distortion, and a recorder for recording the distortion signal from the receiver as distortion measurement data are provided at fixed positions. Belt block strain measuring device.