CN103792034B - A kind of axial difference dynamic formula mine hoist main-shaft torque detecting device - Google Patents

Abstract

A kind of axial difference dynamic formula mine hoist main-shaft torque detecting device, including symmetry be fastened on outside mine hoist main shaft upper, lower house, on, the pedestal one and pedestal two that are fastened on mine hoist main shaft it is interval with in lower house, pedestal one is provided with light source generation casing, it is provided with power supply one in light source generation casing, the light source being connected with power supply one, lens one on the same axis relative to light source, pedestal two is provided with light source and receives casing, it is provided with signal processing unit in light source receiving magazine body, the light sensitive device being connected with signal processing unit, with lens one and light sensitive device lens two on the same axis, light source generation casing receives with light source and is respectively equipped with loophole at grade on two sides that casing is relative.The signal changed by light sensitive device realizes the real-time detection to mine hoist main-shaft torque by being wirelessly transmitted to host computer after the process of signal processing unit, it is achieved torque measurement during rotating shaft different rotating speeds.

Description

An axial differential mine hoist spindle torque detection device

technical field

The invention relates to an axial differential type mine hoist main shaft torque detection device, which is especially suitable for the detection of the torque of the main shaft of the mine hoist, and is also suitable for the torque detection of other rotating shafts.

Background technique

The hoist is a typical rotating machine widely used in mines. As the "throat" of mines, it plays a very important role in mining production. With the rapid development of modern industry and science and technology and the requirements for high production efficiency, the structure of mine hoists is becoming more and more complex, the single lifting capacity is getting larger and larger, the lifting speed is getting faster and faster, and the lifting distance is getting bigger and bigger. . Once there are faults such as can jamming, slipping, over-rolling and over-discharging during the hoisting process of the mine hoist, a chain reaction may be triggered, and its working condition will not only affect the operation of the equipment itself, but also affect subsequent production. In severe cases It may even lead to accidents involving machine crashes and fatalities, causing heavy losses to the national economy. Therefore, it is necessary to detect the torque of the main shaft of the mine hoist, because the torque of the main shaft will change accordingly when the hoist gets stuck, slips, overwinds and breaks the rope.

At present, researchers have developed many torque measurement methods and devices. For example, the series connection measurement method is to connect the corresponding torque measurement device in series on the measured component. This method needs to change the structural connection of the original equipment, and the application cost to the installed equipment is high. The torque measurement of the rotating shaft can be realized by pasting the strain gauges on the rotating shaft, but there will be loss of the strain gauges and high requirements for the attachment accuracy of the strain gauges. The torque measurement of the rotating shaft can also be realized by electromagnetic induction, but the electromagnetic induction will affect the effective transmission of wireless data. Carry out certain treatment on the shaft surface (score lines, install coils, etc.), and then install inspection devices at the corresponding positions to measure the torque of the shaft. The method needs to install brackets on the original foundation, requiring a large number of connecting wires, which has certain limitations. Therefore, the present invention applies the wireless transmission technology to the torque detection of the main shaft of the mine hoist to solve the shortage of wired connection.

Contents of the invention

Technical problem: The purpose of the present invention is to overcome the deficiencies in the prior art, to provide an axial differential type mine hoist spindle torque detection device, which reduces wiring through wireless transmission of data, thereby avoiding electromagnetic interference on wireless transmission impact.

Technical solution: The axial differential mine hoist main shaft torque detection device of the present invention includes upper and lower shells that are symmetrically fastened outside the main shaft of the mine hoist. Base 1 and base 2 on the main shaft of the machine, the base 1 is provided with a light source generating box, and the light source generating box is provided with a power supply 1, a light source connected to the power supply 1, and the light source is relatively on the same axis Lens 1, the base 2 is provided with a light source receiving box, the light source receiving box is provided with a signal processing unit, a photosensitive device connected to the signal processing unit, and a lens on the same axis as the lens 1 and the photosensitive device Lens 2, light transmission holes on the same plane are respectively provided on the opposite sides of the light source generating box and the light source receiving box, and the signal processing unit includes a power supply 2 and a signal processing circuit connected to the output terminal of the power supply 2 , the input end of the signal processing circuit is connected with the output end of the photosensitive device, and the output end is connected with the wireless transmitting module.

A rubber layer is provided at the joint of the upper and lower shells.

The light transmission hole shown is a fan-shaped hole concentric with the main axis.

Beneficial effects: the invention utilizes the principle of light sensing to detect the torque of the main shaft of the mine hoist in real time. When the torque of the shaft is zero, the light sensing device receives the most light and outputs the strongest signal. When the spindle torque is not zero, the light transmission hole 1 and the light transmission hole 2 will be misaligned, so that the light reaching the photosensitive device is reduced, and the output signal is correspondingly reduced. The signal changed by the light sensing device is processed by the signal processing unit and sent to the host computer wirelessly to realize the real-time detection of the shaft torque of the mine hoist. It is especially suitable for the shaft torque detection system of the mine hoist, and can also be applied to other shaft torque measurements. Real-time measurement of torque can be realized without destroying the connection sequence of the original equipment. By transmitting data wirelessly, wiring is reduced, and the influence of electromagnetic interference on wireless transmission is avoided. At the same time, it can realize torque measurement at extreme speeds such as stationary shaft and extremely low speed, without interference of electromagnetic field on wireless transmission, easy to use, low maintenance cost, simple structure, convenient operation, good effect, and wide practicability.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic diagram of the through-hole structure of the present invention.

Fig. 3 is a schematic diagram of a signal processing unit of the present invention.

In the figure: 1-light source, 2-light source generating box, 3-lens 1, 4-upper casing, 5-light source receiving box, 6-lens 2, 7-photosensitive device, 8-signal processing unit, 9 -Power supply 1, 10-base 1, 11-spindle, 12-lower housing, 13-light transmission hole 1, 14-light transmission hole 2, 15-base 2, 16-power supply 2, 17-signal processing circuit , 18-wireless transmitting module.

detailed description

An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

As shown in accompanying drawing 1, mine hoist main shaft torque detection device of the present invention, mainly by light source 1, light source generating box 2, lens, upper casing 4, lower casing 12, light source receiving box 5, lens, light It consists of sensing device 7, signal processing unit 8, power supply and base 10. The upper casing 4 and the lower casing 12 are symmetrically fastened on the outside of the main shaft 11 of the mine hoist, and the upper casing 4 and the lower casing 12 are provided with a base that is fastened and fixed on the main shaft 11 of the mine hoist at intervals. One 10 and two bases 15, the upper shell 4 and the lower shell 12 are connected by nuts and fixed on the base one 10 and the second base 15 by screws, the upper shell 4 and the lower shell 12 are symmetrical A rubber layer is provided at the buckled place. In order to improve the fixing effect of the first base 10 and the second base 15, when the first base 10 and the second base 15 are naturally fastened on the rotating shaft, a 5mm gap is reserved between the first base 10 and the second base 15; A light source generating box 2 is provided on the base 10 of the base, and a light transmission hole 13 is opened on the surface of the light source generation box 2 opposite to the light source 1, and a lens is arranged between the light transmission hole 13 and the light source 1 -3 and make the light source 1 be positioned at a focal point of the lens-3; the light source generating box 2 is provided with a power supply-9, a light source 1 connected to the power supply-9, a lens-3 on the same axis relative to the light source 1, the light source 1 installed in the light source generating box 2 on the surface perpendicular to the main shaft 11 and away from the light source receiving box 5 and connected to the power supply 9; the base 2 15 is provided with a light source receiving box 5, and the light source receiving box 5 is provided with a signal processing unit 8, a photosensitive device 7 connected to the signal processing unit 8, a lens 2 6 on the same axis as the lens one 3 and the photosensitive device 7, and the light source generating box 2 is opposite to the light source receiving box 5 The two sides of the shaft are respectively provided with light-transmitting holes on the same plane, and the light-transmitting holes are fan-shaped holes concentric with the main shaft 1. The place where the base one 10 and the base two 15 install the box is made into a plane, which is convenient for installing the light source generation box 2 and the light source receiving box 5; the signal processing unit 8 includes a power supply two 16, and a power supply two 16 output The signal processing circuit 17 connected to the terminal, the input terminal of the signal processing circuit 17 is connected to the output terminal of the photosensitive device 7 , and the output terminal is connected to the wireless transmitting module 18 .

As shown in Figure 2, the light transmission hole 13 is an arc-shaped hole concentric with the main shaft 1, the light transmission hole 13 and the light transmission hole 2 14 are formed by one-time processing, and the light transmission hole 13 and the light transmission hole 13 need to be assembled during installation. Light transmission hole two 14 are justified.

As shown in FIG. 3 , the signal processing unit 8 includes a power supply 16 , a signal processing circuit 17 and a wireless transmitting module 18 .

When working, install the main shaft torque detection device on the main shaft 11 of the hoist and keep it relatively still. When the main shaft is not stressed, the light from the light source 1 passes through the lens 3 and becomes parallel light through the light transmission hole 13 to reach the transmission shaft. At the light hole 14, since the initial positions of the light hole 13 and the light hole 14 are completely aligned, the light passing through the light hole 13 will all pass through the light hole 14, and then reach the On the photosensitive device 7; when the main shaft is stressed to generate torque, the torque will cause relative rotation between the base one 10 and the base two 15, and a corresponding degree of dislocation will appear in the light transmission hole one 13 and the light transmission hole two 14, so Only part of the light coming out of the first light hole 13 reaches the photosensitive device 7 after passing through the second light hole 14 and the second lens 6 . Therefore, when the main shaft 11 is subjected to different torques, the intensity of the light received by the photosensitive device 7 is different, and the intensity of the light is inversely proportional to the magnitude of the torque. Therefore, the detection of the shaft torque of the mine hoist can be realized by processing the electrical signal returned by the photosensitive device 7 in real time through the signal processing unit 8 . Calibration is required before using the device of the present invention.

Claims (3)

1. An axial differential mine hoist main shaft torque detection device, characterized in that it includes upper and lower shells that are symmetrically fastened outside the main shaft (11) of the mine hoist, and the upper and lower shells are spaced apart from each other. Fasten and fix base one (10) and base two (15) on the main shaft (11) of the mine hoist, with a gap of 5mm reserved between base one (10) and base two (15); The housing is connected by nuts and fixed on the base one (10) and base two (15) by screws; the base one (10) is provided with a light source generating box (2), and the light source generating box ( 2) There are a power supply one (9), a light source (1) connected to the power supply one (9), a lens one (3) on the same axis as the light source (1), and the base two (15) The light source receiving box (5) is arranged on the top, and the light source receiving box (5) is equipped with a signal processing unit (8), a photosensitive device (7) connected to the signal processing unit (8), and a lens one (3) Lens 2 (6) on the same axis as the photosensitive device (7), the two opposite sides of the light source box (2) and the light source box (5) are respectively provided with light-transmitting holes on the same plane, The signal processing unit (8) includes a power supply two (16), a signal processing circuit (17) connected to the output terminal of the power supply two (16), the input terminal of the signal processing circuit (17) is connected to the light sensing device (7) The output end is connected, and the output end is connected with the wireless transmitting module (18); when working, install the main shaft torque detection device on the hoist main shaft (11) and keep it relatively still. When the main shaft is not stressed, the light source (1) The parallel light that the light becomes after passing through the first lens (3) passes through the first light hole (13) and reaches the second light hole (14). Since the initial positions of the first light hole (13) and the second light hole (14) are completely Align, so that the light passing through the first light hole (13) will all pass through the second light hole (14), and then reach the photosensitive device (7) after being focused by the second lens (6); when the main shaft is forced to generate torque , the torque will cause relative rotation between the first base (10) and the second base (15), and a corresponding degree of misalignment between the first light transmission hole (13) and the second light transmission hole (14), so that the first light transmission hole (13) Only part of the light that comes out reaches the photosensitive device (7) after passing through the second light hole (14) and the second lens (6); when the main shaft (11) is subjected to torques of different sizes, the final photosensitive device (7) ) is different in intensity of light received, and the intensity of this light is inversely proportional to the size of the torque; therefore, the signal processing unit (8) can process the electrical signal returned by the photosensitive device (7) in real time to realize the Detection of shaft torque of mine hoist. 2. The axial differential mine hoist spindle torque detection device according to claim 1, characterized in that: a rubber layer is provided at the fastening place of the upper and lower housings. 3. The axial differential mine hoist main shaft torque detection device according to claim 1, characterized in that: the light-transmitting hole is a fan-shaped hole concentric with the main shaft (11).