Transmission shaft with real-time online torque monitoring device

A torque device and transmission shaft technology, applied in the field of transmission shafts, can solve the problems of high power supply environment requirements, sliding wear, limited electric energy, etc., and achieve the effect of stable and reliable working performance and high measurement accuracy

Active Publication Date: 2014-05-14

ACADEMY OF ARMORED FORCES ENG PLA

5 Cites 89 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The slip ring power supply adopts the sliding contact method between the brush and the collector ring, which has limitations in use such as sliding wear, contact sparks, carbon deposits, and unsafe exposed conductors; whil...

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Method used

A turntable 8 is set on the side wall of the shaft rod 1, and the disk surface of the turntable 8 is provided with a power receiving electromagnetic coil 9, and the power receiving electromagnetic coil 9 is arranged around the shaft rod 1, and the power receiving electromagnetic coil 9 is passed through a rectification filter voltage stabilizing module 20 is electrically connected with Wheatstone bridge 3, signal amplifier 4, analog-to-digital converter 5 and radio transmission module 6, and the vicinity of electric electromagnetic coil 9 is provided with high-frequency alternating electromagnetic coil 10, and high-frequency alternating electromagnetic coil 10 is connected with The power receiving electromagnetic coil 9 is arranged side by side with the axial center, the distance between the end face of the high frequency alternating electromagnetic coil 10 and the end face of the power receiving electromagnetic coil 9 is less than 15 mm, the high frequency alternating electromagnetic coil 10 is installed on the positioning plate 11, and the height The frequency alternating electromagnetic coil 10 is electrically connected to a DC power supply through an inverter circuit 12 . The adoption of the above technical solution can ensure the reliability and stability of power supply in high temperature, high vibration and impact environment, and then can ensure real-time online torque monitoring in a narrow space and high measurement accuracy.

As a further improvement of the present invention, above-mentioned turntable 8 is annular, and turntable 8 adopts insulating material to make, and electric electromagnetic coil 9 adopts bonding to be fixed on the disk surface of turntable 8 towards the left, and positioning plate 11 is a ring The positioning plate 11 is made of insulating material, and the high-frequency alternating electromagnetic coil 10 is fixed on the right-facing disk surface of the positioning plate 11 by bonding. The above technical features can further ensure that the transmission shaft with real-time online torque monitoring device of the present invention can realize real-time online torque monitoring in a narrow space in a hi...

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Abstract

A transmission shaft with a real-time online torque monitoring device comprises a shaft rod, wherein an installing groove for an electrical apparatus element to be installed is formed in the middle of the side wall of the shaft rod and is in a shape of a circular ring around the side wall of the shaft rod. A Wheatstone bridge is arranged in the installing groove, the electric signal output end of the Wheatstone bridge is electrically connected with the electric signal input end of a signal amplifier, the electric signal output end of the signal amplifier is electrically connected with the electric signal input end of an analog-digital converter, the electric signal output end of the analog-digital converter is electrically connected with the electric signal input end of a radio transmitting module, the radio transmitting module sends a signal to a radio receiving module, and the radio receiving module is connected with a computer capable of processing, displaying and storing a torque value transferred by the transmission shaft. The transmission shaft with the real-time online torque monitoring device can achieve online torque monitoring in a narrow space in a high-temperature and high-vibratory-impact environment and is stable and reliable in working performance and high in measurement accuracy.

Application Domain

ShaftsWork measurement +1

Technology Topic

Signal amplifierElectricity +10

Image

Examples

Experimental program(1)

Example Embodiment

[0022] Such as figure 1 , figure 2 with image 3 As shown, the transmission shaft with a torque device capable of real-time online monitoring of the present invention includes a shaft 1. The middle of the side wall of the shaft 1 is provided with a mounting groove 2 for installing electrical components, and the mounting groove 2 surrounds the side of the shaft 1. The wall has a circular ring shape. The installation groove 2 is provided with a Wheatstone bridge 3 including metal resistance strain gauges. The two half-bridge strain gauges of the Wheatstone bridge 3 are respectively attached to the bottom of the installation groove 2 axially symmetrically. Each half-bridge strain gauge includes two resistance strain gauges. The electrical signal output end of the Wheatstone bridge 3 is electrically connected to the electrical signal input end of the signal amplifier 4, and the electrical signal output end of the signal amplifier 4 is electrically connected to the analog-to-digital converter 5. The electrical signal input end of the analog-to-digital converter 5 is electrically connected to the electrical signal input end of the radio transmitting module 6, the radio transmitting module 6 sends a signal to the radio receiving module 7, and the radio receiving module 7 is connected to the processing , Computer connection that displays and stores the torque value transmitted by the drive shaft;

[0023] A turntable 8 is fitted on the side wall of the shaft 1. The turntable 8 is provided with a power receiving electromagnetic coil 9 on the disk surface. The power receiving electromagnetic coil 9 is arranged around the shaft 1, and the power receiving electromagnetic coil 9 is connected to the The stone bridge 3, the signal amplifier 4, the analog-to-digital converter 5 and the radio transmitter module 6 are electrically connected. A high-frequency alternating electromagnetic coil 10 is provided near the power receiving electromagnetic coil 9, and the high-frequency alternating electromagnetic coil 10 is connected to the receiving electromagnetic coil. The coils 9 are arranged coaxially in parallel, the distance between the end face of the high-frequency alternating electromagnetic coil 10 and the end face of the receiving electromagnetic coil 9 is less than 15mm, and the high-frequency alternating electromagnetic coil 10 is installed on the positioning plate 11, and the high-frequency alternating electromagnetic coil 10 The electromagnetic coil 10 is electrically connected to a DC power supply through an inverter circuit 12. The adoption of the above technical solution can ensure the reliability and stability of the power supply in a high temperature, high vibration and shock environment, thereby ensuring real-time online torque monitoring in a small space, and ensuring high measurement accuracy.

[0024] When the transmission shaft with a real-time online monitoring torque device of the present invention is in use, the Wheatstone bridge 3 located in the installation slot 2 can accurately measure the magnitude of the torque transmitted by the shaft 1 and convert it into a corresponding electrical signal. The electric signal is sent to a computer that can process, display and store the torque value transmitted by the drive shaft through the radio transmitting module 6 and the radio receiving module 7, and the inverter circuit 12 can invert the DC power supply into a sine with a frequency of 67KHz The current causes a high-frequency changing electromagnetic field to be generated around the high-frequency alternating electromagnetic coil 10, giving way to the high-frequency induced electromotive force generated in the receiving electromagnetic coil 9 in the magnetic field. This electromotive force is passed through the rectification, filtering and voltage stabilization module 20 to obtain a 5V direct current , So as to realize the power supply to the Wheatstone bridge 3, the signal amplifier 4, the analog-to-digital converter 5 and the radio transmitting module 6.

[0025] The shaft 1 is provided with a threading hole 13 along the axial direction, the bottom of the installation groove 2 is provided with an outlet hole 14 in the radial direction, and the shaft 1 is provided with an inlet hole 15 in the radial direction at the side wall near the turntable 8 , The inner end of the inlet hole 15 and the inner end of the outlet hole 14 are respectively communicated with the threading hole 13, and the wires connecting the signal amplifier 4 and the rectifier filter and voltage stabilizing module 20 to the Wheatstone bridge 3 pass through the inlet hole 15 and the thread Hole 13 and outlet hole 14. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0026] The above-mentioned rectifying, filtering and stabilizing module 20, signal amplifier 4, analog-to-digital converter 5, and radio transmitting module 6 are installed on the turntable 8, and the radio receiving module 7 is installed on the positioning board 11. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0027] The installation groove 2 is filled with 703 silicon rubber, 704 silicon rubber, 705 silicon rubber, or 706 silicon rubber. Filling the installation groove 2 with 703 silicon rubber or 704 silicon rubber or 705 silicon rubber or 706 silicon rubber can further ensure that the drive shaft of the present invention with a torque device capable of real-time online monitoring realizes a narrow space in a high temperature, high vibration and shock environment Real-time online monitoring of torque, and further ensure its stable and reliable working performance, high measurement accuracy.

[0028] As an improvement of the present invention, the above-mentioned inverter circuit 12 is installed on the positioning plate 11, the depth of the installation slot 2 is 2-3mm, the length of the installation slot 2 along the axis of the shaft 1 is 25-35mm, and the high-frequency alternating electromagnetic coil The distance between the end surface of 10 and the end surface of the power receiving electromagnetic coil 9 is 3-10 mm. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0029] As a further improvement of the present invention, the intersection of the side wall of the installation groove 2 and the bottom of the installation groove 2 is provided with a transition arc surface for reducing stress concentration. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0030] As a further improvement of the present invention, the above-mentioned turntable 8 is annular, the turntable 8 is made of insulating material, the power receiving electromagnetic coil 9 is fixed on the left-facing surface of the turntable 8 by bonding, and the positioning plate 11 is annular, positioning The plate 11 is made of insulating material, and the high-frequency alternating electromagnetic coil 10 is fixed on the disk surface of the positioning plate 11 facing the right by bonding. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0031] As a further improvement of the present invention, the inner end of the disk surface of the turntable 8 is attached to the end surface of the connecting sleeve 16. The inner end of the disk surface of the turntable 8 is fixedly connected with the connecting sleeve 16 by screws, and the connecting sleeve 16 is sleeved on the side wall of the shaft 1 , The connecting sleeve 16 and the shaft 1 are connected by a set screw or a positioning pin or a flat key. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0032] As a further improvement of the present invention, the shaft 1 is rotatably installed in the case 17 of the gearbox or reducer, the outer end of the positioning plate 11 is attached to the end surface of the connecting piece 18, and the outer end of the positioning plate 11 is It is fixedly connected with the connecting piece 18 by screws, and the connecting piece 18 is installed on the inner wall of the box body 17 with bolts. The above technical features can further ensure that the drive shaft with real-time online torque monitoring device of the present invention realizes real-time online torque monitoring in a small space in a high temperature, high vibration and shock environment, and further ensures stable and reliable working performance and high measurement accuracy.

[0033] The above-mentioned embodiments only describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications made by ordinary engineers in the art to the technical solutions of the present invention All improvements and improvements should fall within the scope of protection determined by the claims of the present invention.

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PUM

Property	Measurement	Unit
Depth	2.0 ~ 3.0	mm
Length	25.0 ~ 35.0	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Transmission shaft with real-time online torque monitoring device

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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