CN110344148B - A magnetoelectric spinning spindle power sensor - Google Patents

Abstract

The invention discloses a magnetoelectric spinning spindle power sensor, comprising a spindle rod and a spindle foot, the spindle rod and the spindle foot are movably connected, and a clutch assembly, a magnet, a magnetoelectric sensitive component and an integrated conversion module are arranged inside the spindle foot. The clutch component is sleeved on the lower part of the spindle, and the clutch component is fixedly connected with the spindle; the magnetoelectric sensitive component is sleeved on the side of the clutch component away from the spindle, and the magnetoelectric sensitive component is fixedly connected with the outer side of the clutch component; The induction coil of the sensitive component is matched with the magnet; the magnet is fixedly connected with the inner side of the clutch component; the signal extraction resistance of the magnetoelectric sensitive component is electrically connected with the induction coil to form a closed loop, and the signal extraction resistance is electrically connected with the integrated conversion module. The appearance of the invention is consistent with that of the traditional spinning spindle, and has the advantages of stable performance, high sensitivity, repeated use, mass production, low cost, long service life, and does not change the existing working mode of the traditional spindle.

Description

A magnetoelectric spinning spindle power sensor

technical field

The invention relates to the field of textile machinery, in particular to a magnetoelectric type spinning spindle power sensor.

Background technique

In August 1831, British physicist Michael Faraday (September 22, 1791 to August 25, 1867) discovered the law of electromagnetic induction. In 1832, Russian physicists were inspired by Faraday's law of electromagnetic induction. , launched a large number of electromagnetic experiments, and published a paper in 1833 "On the direction of current caused by electrokinetic induction". In 1865, British Maxwell deduced the existence of electromagnetic waves from the electromagnetic theory, which propagated at the speed of light and concluded that light is a kind of electromagnetic wave. Since then, the law of electromagnetic induction has gradually been widely used, and the principle of magnetoelectric sensing is the specific application of Faraday's law of electromagnetic induction in sensor technology. In 2006, Song Guomin, Li Jun, Hu Linfeng and Jiang Zhaoyi from the Department of Automotive Engineering of Tsinghua University developed a magnetoelectric speed sensor for high-voltage diesel engines on the basis of studying the principle of magnetoelectric speed sensing. Diesel engines replace imports. In 2010, Song Lihong, Tian Huipeng and Huang Haohua from the Institute of Engineering Mechanics of China Earthquake Administration studied the matching problem of magnetoelectric sensors and signal conditioners. In 2013, Ren Guofeng, Tian Feng, Zhang Shumei and Yang Lin from the Institute of Automotive Electronics Technology of Shanghai Jiao Tong University studied the output voltage characteristics of the magnetoelectric speed sensor for electronically controlled diesel engines, and pointed out that reducing the installation gap can improve the output voltage at low speeds . In 2014, Zan Junde and Xiang Beiping from the School of Manufacturing Science and Engineering, Southwest University of Science and Technology, studied the magnetic field change of the shuttle check valve spool displacement magnetoelectric sensor to provide a theoretical basis for pipeline safety. In 2017, An Jingyue, the 31st Research Institute of the Third Research Institute of China Aerospace Science and Industry Corporation, developed a magnetoelectronic speed sensor for a worm gear engine. It can be seen that although the magnetoelectric sensor has been applied, the application research of the magnetoelectric sensor has not been widely carried out and has not been widely used, and its current application is mainly concentrated in the automotive field.

Spinning spindle is one of the main components of the spinning machine, and it is one of the key components commonly used in textile machines. Whether the spindle works normally online, the online power consumption and speed of the spindle are the key parameters that the textile industry generally pays attention to. Because the working mode of the spindle and the spindle foot is plug-in type, and the traditional spindle is a pure mechanical precision mechanism, the mechanical structure in the spindle foot is complex, the size of the parts is small, the machining accuracy is high, and the assembly process is complicated. Therefore, the production of traditional spindles The cost is relatively high. If the spinning spindle does not rotate due to a certain fault during the working process, it is difficult for the spinning machine operator to know and repair it in time. Since the real-time power consumption of each spinning spindle during operation is unknown, it is difficult to optimize the spinning according to the actual situation. Due to the mechanical structure of the spindle, it is difficult to evaluate the online power consumption of all the spindles of a textile machine, and it is difficult to properly analyze and evaluate the performance of different types of spindles, so the degree of automation of the textile machine is relatively low.

In order to be able to measure the power consumption and rotational speed of the spindle online, people pay more and more attention to how to use the existing technology to detect the power consumption and rotational speed of the spindle online without changing the established working mode of the traditional spindle.

SUMMARY OF THE INVENTION

Aiming at the current situation that the problematic spindles cannot be judged in time during the mass production process of the spinning machine, the present invention proposes a magnetoelectric spinning spindle power sensor based on the Faraday electromagnetic induction effect, which can accurately know the online power consumption of all spindles and Real-time monitoring is conducive to timely repair or replacement of problematic spindles and improve industrial production efficiency.

The technical scheme of the present invention is realized as follows: a magnetoelectric spinning spindle power sensor includes a spindle rod and a spindle foot, the spindle rod and the spindle foot are movably connected to form a closed structure, and the inside of the spindle foot is provided with a clutch assembly, A magnet, a magneto-electric sensitive component and an integrated conversion module, the clutch component is sleeved on the bottom of the spindle and is movably connected with the spindle. When the spindle rotates, the clutch component rotates together with the spindle; the magneto-electric sensitive component is sleeved On the side of the clutch assembly away from the spindle, the magneto-electric sensitive component is fixedly connected to the outside of the clutch component, and the magneto-electric sensitive component does not rotate with the spindle; the induction coil of the magneto-electric sensitive component cooperates with the magnet, in addition to the induction Outside the coil, other structures of the magneto-electric sensitive component are made of insulating materials; the magnet is located on the side of the clutch component away from the spindle, the magnet is movably connected to the inner side of the clutch component, and the magnet rotates together with the spindle; the The signal extraction resistance Rf of the magneto-electric sensitive component is electrically connected with the induction coil to form a closed loop, and the signal extraction resistance Rf is electrically connected with the integrated conversion module. When the spindle rotates, the magnet rotates together with the spindle, which is equivalent to the magnetic field rotating in space at the speed of the spindle. Since the induction coil does not move, it is equivalent to the magnetic force line being forced to cut, thus generating an induction in the magnetoelectric sensitive component. The electromotive force, the signal extraction resistance Rf and the induction coil are electrically connected to form a closed loop, and the corresponding induced voltage and induced current are generated in the signal extraction resistance Rf. After the integrated conversion module measures the induced voltage and induced current, the two data are multiplied. For the power consumption of the spindles, an integrated conversion module is connected to the outside in order to output the measurement results.

Further, the clutch assembly includes a clutch key, a support assembly of the clutch assembly and an axial thrust ball bearing, the upper part of the clutch key is provided with a support platform, and the support platform is movably connected with the support assembly of the clutch assembly through the axial thrust ball bearing. There is a through hole in the clutch key, and the outrigger shaft at the bottom of the spindle is inserted into the through hole and fixedly connected with the clutch key, and the clutch key rotates with the spindle; the clutch key can be connected or separated from the spindle through a key or internal gear; The axial thrust ball bearing is sleeved on the clutch key, one side of the axial thrust ball bearing is fixedly connected with the support table, and the other side of the axial thrust ball bearing is fixedly connected with the upper part of the support assembly of the clutch assembly; the The clutch assembly support assembly is sleeved on the clutch key, and the clutch assembly support assembly is movably connected with the clutch key, and the lower part of the clutch assembly support assembly is connected with the magnetoelectric sensitive component; the magnet is located at the lower part of the through hole, and the magnet is connected to the clutch The key assembly is connected, and the magnet mates with the magnetoelectric sensitive component. The axial thrust ball bearing plays the role of axial support and positioning for the clutch key.

Further, the clutch assembly support assembly includes a clutch assembly support sleeve, the clutch assembly support sleeve is sleeved on the clutch key, and the clutch assembly support sleeve is movably connected with the clutch key through a mechanical bearing; the outer side of the mechanical bearing is connected to the clutch key. The support jacket of the clutch assembly is fixedly connected, and the inner side of the mechanical bearing is fixedly connected with the clutch key; the mechanical bearing is an angular contact ball bearing, a roller bearing or a radial thrust bearing, all bearings that can achieve both axial and radial positioning can be In use; the upper part of the support jacket of the clutch component is fixedly connected with the axial thrust ball bearing, and the lower part of the support jacket of the clutch component is fixedly connected with the magnetoelectric sensitive component. Due to the existence of the mechanical bearing and the axial thrust ball bearing, when the spindle rotates, the support jacket of the clutch assembly does not move; the mechanical bearing realizes the centripetal positioning of the spindle to prevent the deflection of the spindle and the clutch key when they are connected together and rotate. Oblique phenomenon, enhance the axial rigidity and centripetal positioning of spindle and clutch key.

In order to axially compress the clutch key and the inner race of the fixed mechanical bearing and prevent axial play, the clutch key and the mechanical bearing are fixedly connected through the clutch key end cover; the clutch key end cover is located between the clutch assembly support assembly and the Between the magnets, the clutch key end cover is sleeved on the clutch key, and the clutch key end cover is fixedly connected with the clutch key.

In order to provide axial support to the axial thrust ball bearing and play the role of force transmission, the clutch assembly support assembly further includes a clutch assembly support end cover, the clutch assembly support end cover is sleeved on the clutch key, and the clutch assembly One side of the support end cover is provided with a groove II, and the other side of the support end cover of the clutch assembly is provided with a connection platform, which is fixedly connected with the inner wall of the support jacket of the clutch assembly; the axial thrust ball bearing is arranged in the groove II inside; the number of the clutch assembly support jackets is at least two, and the two clutch assembly support jackets are connected through the clutch assembly support end cover.

Further, the magnetoelectric sensitive assembly also includes an induction coil bobbin and an induction coil skeleton end cover, the upper part of the induction coil skeleton is fixedly connected with the clutch assembly through the induction coil skeleton end cover, and the lower circumferential direction of the induction coil skeleton is provided with a groove I. ; The induction coil is arranged in the groove I, and is wound on the inner wall of the groove I, and the induction coil bobbin is arranged outside the magnet. The induction coil skeleton is made of insulating material.

Preferably, insulating gaskets are provided between the induction coil bobbin and the clutch assembly and between the induction coil bobbin and the end cover of the induction coil bobbin, and the insulating gasket is fixedly connected to the clutch assembly and the end cover of the induction coil bobbin. The insulating spacer acts to electrically isolate the induction coil from other structures.

Further, the integrated conversion module includes a power calculation module, a memory and a signal output module, and the power calculation module includes a power amplifier, an analog multiplier and a power factor controller, and the input of the analog multiplier is electrically connected to the signal extraction resistor Rf. The output of the analog multiplier is electrically connected with the power amplifier; the power amplifier is electrically connected with the power factor controller; the power factor controller is electrically connected with the memory; the memory is electrically connected with the signal output module; the signal output The module includes an analog-to-digital conversion chip, the input of the analog-to-digital conversion chip is electrically connected to the memory, and the output of the analog-to-digital conversion chip passes through the bottom of the spindle foot through a wire.

Preferably, the integrated conversion module is located at the bottom of the spindle foot, and an insulating isolation plate is provided between the integrated conversion module and the magneto-electric sensitive assembly; the insulating isolation plate is movably connected to the spindle foot. The insulating spacer separates the magneto-sensitive components from the integrated conversion module, thereby forming protection for the magneto-sensitive components.

Further, the spindle foot includes a spindle foot end cover and a spindle foot shell, and the spindle foot end cover is provided with an output wire hole and a pin positioning process hole, and the spindle foot end cover is connected with the lower part of the spindle foot shell; The outside of the shell of the spindle foot is provided with the outer thread of the spindle foot, the inside of the shell of the spindle foot is provided with a support plate, the support plate is fixedly connected with the shell of the spindle foot, and the upper part of the shell of the spindle foot is movably connected with the spindle rod; the integrated conversion module is located at the end of the spindle foot Inside the cover, and fixedly connected with the end cover of the spindle foot, and the output of the integrated conversion module is led out from the output lead hole through the wire and connected to the external equipment; on the spindle shaft, and is assembled and connected with the spindle shaft; the underside of the spindle shaft is provided with an outrigger shaft, and after the spindle shaft is assembled with the ingot tray, the outrigger shaft is assembled and connected with the clutch assembly; the ingot tray is connected with the spindle foot shell .

The appearance of the magnetoelectric spinning spindle power sensor of the present invention is consistent with the appearance of the traditional spinning spindle, so the mechanical components related to the appearance of the magnetoelectric spinning spindle power sensor, such as spindle rods, spindle feet, etc., are the same as those of the traditional spinning spindle. The spindles are of the same design. The spindle foot is fixed with the textile machine. Under the action of the conveyor belt, the yarn, the bobbin and the spindle will rotate at the same speed. Continuous relative rotation is generated, the magnet rotates together with the spindle rod driven by the clutch key, the induction coil inside the spindle foot does not move, and the rotation of the spindle rod is equivalent to the rotation of the magnetic field in the spindle foot space at the speed of the spindle rod. The coil is forced to cut the magnetic field line because it does not move. According to Faraday's law of electromagnetic induction, the output of the magnetoelectric spinning spindle power sensor is an induced electromotive force, so the induction coil can be regarded as a variable power supply in the circuit. The power consumed is the online power consumption of the spindle. The signal extraction resistor Rf and the induction coil form a closed loop, so the current on the signal extraction resistor Rf is the induced current.

The formula for calculating the induced electromotive force on the induction coil is as follows:

In the formula, W represents the effective number of turns of the coil fixed in the spindle foot, φ represents the magnetic flux of the turn-chain coil, B represents the magnetic induction intensity of the magnetic field, θ represents the angle between the normal direction of the induction coil plane and the direction of the magnetic field, and S represents each The cross-sectional area of the coil, ω represents the rotational angular velocity of the spindle bar relative to the spindle foot, and t represents the time.

When θ=90°, according to (1-1), we get:

e=WBSω; (1-2)

It can be seen that after the structure of the sensitive element of the magnetoelectric spinning spindle power sensor is determined, B, S, and W are all fixed values, so the output induced electromotive force e of the magnetoelectric sensor is proportional to the angular velocity of the spindle ω.

As we all know, there is a definite relationship between the angular velocity ω and the rotational speed n:

In the formula, n represents the rotational speed of the spindle.

Combining formula (1-2) and formula (1-3), we get:

in:

Combining formula (1-1) and formula (1-3), we get:

in:

It can be seen that the output induced electromotive force e of the magnetoelectric spinning spindle power sensor is proportional to the spindle speed n.

The corresponding induced voltage and induced current are measured by the sensor, and the power calculation module can measure the online power consumption of the spinning spindle according to the relationship between power, voltage and current. When the spindle bar rotates abnormally for some reason, abnormal induced voltage and induced current will be generated on the induction coil inside the spindle foot, and the online power consumption obtained by the power calculation module will also be abnormal. In addition, if the induced voltage (induced electromotive force) in the magneto-electric sensitive component is directly amplified, regulated and converted, the output voltage corresponding to the rotational speed of the spindle can be obtained. Using the known online power consumption and rotational speed of the spindle (corresponding to the output voltage), and then according to the relationship between the power and the rotational speed, the dynamic torque acting on the spindle by the conveyor belt can be obtained through the analog circuit. Therefore, the magnetoelectric spinning spindle power sensor provided by the present invention can also output the following detection parameters: online power consumption of the spindle, rotation speed of the spindle, angular velocity and dynamic torque of the spindle at a certain instant.

The present invention has the following beneficial effects: the present invention transforms the spindle itself into a magnetoelectric spinning spindle power sensor, except that the wires are exposed, the clutch assembly, the magnet, the magnetoelectric sensitive assembly and the integrated conversion module are all located inside. Even if the spindle works like that, it can also measure the rotation speed and power consumption of the spindle in real time online, and determine whether the spindle is in normal working state through the measurement data. The invention maintains the existing plug-in installation, working and fixing methods of the traditional spindle, retains the advantages of the traditional spindle working mode, transforms the traditional spinning spindle rod into a sensing and guiding element, and transforms the traditional spindle foot into a transmission The spindle sensing foot, in the traditional way of inserting the spindle, realizes the clutching between the spindle bar and the magnetoelectric sensitive component through the clutch assembly. At the same time, there is no precision transmission mechanism and oil lubrication mechanism of the traditional spindle inside the spindle foot. When the cylinder rotates together, the spindle is connected with the clutch key, so the rotation of the spindle will inevitably drive the rotation of the clutch key at the same speed, and the magnet fixed at the end of the clutch key will also rotate at the same speed, and the movement state of the magnet and the spindle same. In a word, the present invention has the advantages of clear structure, stable performance, high sensitivity, repeated use in harsh environments, mass production, low cost, long service life, and does not change the existing working mode of traditional spindles.

In addition, the structural parts of the present invention are all manufactured by conventional machining, nested assembly, metal wire welding and other processes, and can be applied to various spinning machines and thread-twisting machines in the textile industry, which is beneficial to improve the performance of various spinning machines in the textile industry. It can improve the automation level of spinning equipment such as spinning machines and spinning machines, improve the working reliability and production efficiency of spinning machines and spinning machines, eliminate spindle failures in spinning equipment in time, and can also be used for spinning spindle power testing, etc. The operator can judge in time whether there is a problem with a certain spindle.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic diagram of the spindle foot of the present invention.

3 is a sectional view of the spindle foot of the present invention.

FIG. 4 is a schematic diagram of the end cap of the spindle foot of the present invention.

Figure 5 is a schematic diagram of the spindle bar of the present invention.

FIG. 6 is a schematic diagram of the support jacket of the clutch assembly of the present invention.

FIG. 7 is a schematic diagram of the sleeve support of the present invention.

FIG. 8 is a schematic diagram of the support end cover of the clutch assembly of the present invention.

FIG. 9 is a schematic diagram of the support assembly of the clutch assembly of the present invention.

10 is a cross-sectional view of the clutch assembly support assembly of the present invention.

FIG. 11 is a schematic diagram of the clutch key of the present invention.

12 is a schematic diagram of the clutch key end cap of the present invention.

FIG. 13 is a schematic diagram of the clutch assembly of the present invention.

14 is a cross-sectional view of the clutch assembly of the present invention.

FIG. 15 is a schematic diagram of the induction coil bobbin of the present invention.

16 is a schematic diagram of the end cap of the induction coil bobbin of the present invention.

FIG. 17 is a schematic diagram of the assembly of the induction coil bobbin and the end cover of the induction coil bobbin of the present invention.

FIG. 18 is a schematic diagram of the assembly of the clutch assembly, the induction coil bobbin and the end cover of the induction coil bobbin of the present invention.

FIG. 19 is a schematic view of the appearance of the present invention.

FIG. 20 is a schematic diagram of the magneto-electrical sensing component of the present invention.

Figure 21 is a schematic diagram of the spindle shaft of the present invention.

Figure 22 is a schematic diagram of the ingot tray of the present invention.

In the figure, 1 is the spindle rod, 2 is the spindle foot, 3 is the clutch assembly, 4 is the magnet, 5 is the magneto-electric sensitive component, 6 is the integrated conversion module, 7 is the induction coil frame, 8 is the induction coil frame end cover, 10 11 is the clutch assembly support assembly, 12 is the clutch key end cover, 13 is the axial thrust ball bearing, 14 is the clutch assembly support jacket, 15 is the sleeve support, 16 is the clutch assembly support end cover, 18 19 is the spindle hook, 20 is the spindle pin external thread, 2-1 is the spindle pin end cover, 2-2 is the spindle pin shell, 2-3 is the output wire hole, 2-4 is the pin positioning process hole, 1 -1 is the spindle, 1-2 is the spindle, 21 is the mechanical bearing, and 22 is the bolt.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figure 1, a magnetoelectric spinning spindle power sensor includes a spindle rod 1 and a spindle foot 2, the spindle foot 2 is movably connected with the spindle rod 1, the spindle rod 1 can rotate relative to the spindle foot 2, and the spindle A closed structure is formed between the rod 1 and the spindle foot 2; as shown in Figure 4, the spindle foot 2 includes a spindle foot end cover 2-1 and a spindle foot shell 2-2, and the spindle foot end cover 2-1 has a closed structure. There are output wire holes 2-3 and pin positioning process holes 2-4 on the outside, the output wire holes 2-3 are located in the center of the lower part of the spindle foot end cover 2-1, and the pin positioning process holes 2-4 are located in the output wire holes 2-3 The outer side of the spindle foot end cover 2-1 is fixedly connected with the lower part of the spindle foot shell 2-2; as shown in Figure 2, the spindle foot shell 2-2 is provided with a spindle foot external thread 20, when in use, The outer thread 20 of the spindle foot is threadedly connected with the spinning machine, and the upper part of the shell 2-2 of the spindle foot is movably connected with the spindle rod 1; as shown in Figure 3, the inner part of the shell 2-2 of the spindle foot is provided with a support plate, and the support plate is connected to the spindle. The foot shells 2-2 are fixedly connected; as shown in Figure 19, in order to prevent the belt from slipping off during operation and to keep the conveying method of the traditional spindle unchanged, the spindle foot 2 is also provided with a spindle hook 19, the spindle hook 19 and the spindle foot shell 2-2 Fixed connection, when in use, the hook 19 is connected with the belt to prevent the belt from slipping off during operation. The pin positioning process holes 2-4 can play the role of positioning when the present invention is assembled. As shown in FIG. 5 , the spindle 1 includes a spindle 1-1 and a spindle 1-2, and the spindle 1-2 is fixed on the spindle 1-1; the lower side of the spindle 1-1 An extension shaft is provided; the spindle disc 1-2 is fixedly connected with the spindle foot shell 2-2.

Further, the spindle foot shell 2-2 is provided with a clutch assembly 3, a magnet 4, and a magnetoelectric sensitive assembly 5, that is, the clutch assembly 3, the magnet 4, and the magnetoelectric sensitive assembly 5 are arranged on the spindle disk 1-2 and the spindle foot shell 2. In the closed structure composed of -2 and the spindle foot end cover 2-1; the spindle foot end cover 2-1 is provided with an integrated conversion module 6, the integrated conversion module 6 is fixed in the spindle foot end cover 2-1, and the integrated conversion module 6 is fixed in the spindle foot end cover 2-1. The output of the module 6 is led out of the output wire hole 2-3 through the wire 18. The wire 18 is drawn out from the bottom of the spindle foot end cover 2-1 and then connected to external equipment. This output method will not affect the traditional fixing method of the spindle on the textile machine, and is also conducive to the extraction of signals. The clutch assembly 3 is sleeved on the lower part of the spindle rod 1, and the spindle rod 1 is fixedly connected with the clutch assembly 3 through the outrigger shaft. When the spindle rod 1 rotates, the clutch assembly 3 rotates with the spindle rod 1, and the spindle foot 2 does not move; The magneto-electric sensitive assembly 5 is sleeved on the side of the clutch assembly 3 away from the spindle 1, the magneto-electric sensitive assembly 5 is fixedly connected with the outside of the clutch assembly 3, and the magneto-electric sensitive assembly 5 does not rotate with the spindle 1; The induction coil of the magneto-electric sensitive assembly 5 is matched with the magnet 4; the magnet 4 is fixed on the inner side of the clutch assembly 3 away from the spindle 1, and the magnet 4 rotates together with the spindle 1; as shown in FIG. 20, the magnetic The signal extraction resistor Rf of the electro-sensitive component 5 is electrically connected with the induction coil to form a closed loop, and the signal extraction resistor Rf is electrically connected with the integrated conversion module 6 .

When the spindle 1 rotates, the magnet 4 rotates together with the spindle 1, which is equivalent to the magnetic field rotating in space at the speed of the spindle 1. Since the induction coil is stationary, it is equivalent to the magnetic force line being forced to cut, so that the magneto-electric sensitive component 5 is forced to cut. The induced electromotive force is generated in the signal extraction resistance Rf and the induction coil is a closed loop, and the corresponding induced voltage and induced current are generated in the signal extraction resistance Rf. After the integrated conversion module 6 measures the induced voltage and induced current in the signal extraction resistance Rf Multiplying the two data is the power consumption of the spindle. The integrated conversion module 6 is connected to the outside and the measurement results are processed and output.

As shown in FIGS. 13 and 14 , the clutch assembly 3 includes a clutch key 10 , a clutch assembly support assembly 11 and an axial thrust ball bearing 13 . The upper part of the clutch key 10 is provided with a support platform, and the support platform passes through the axial direction. The thrust ball bearing 13 is movably connected with the clutch assembly support assembly 11; the clutch key 10 is provided with a through hole, and the outrigger shaft at the bottom of the spindle 1 is inserted into the through hole and is fixedly connected with the clutch key 10, and the clutch key 10 is connected with the spindle 1. Rotating together, the clutch key 10 can be connected and separated from the spindle 1 through a key or internal gear; the axial thrust ball bearing 13 is sleeved on the clutch key 10, and one side of the axial thrust ball bearing 13 is fixed to the support table The other side of the axial thrust ball bearing 13 is fixedly connected to the upper part of the clutch assembly support assembly 11; the clutch assembly support assembly 11 is sleeved on the clutch key 10, and the clutch assembly support assembly 11 and the clutch key 10 Actively connected, the lower part of the clutch assembly support assembly 11 is connected with the magnetoelectric sensitive assembly 5; the magnet 4 is located at the lower part of the through hole, and the magnet 4 is in an interference fit with the through hole, and the magnet 4 is fixed on the clutch key 10 through the bolt 22. At the end; the axial thrust ball bearing 13 plays the role of axial support and positioning for the clutch key 10 .

As shown in FIGS. 6 and 9 , the clutch assembly support assembly 11 includes a clutch assembly support sleeve 14 , the clutch assembly support sleeve 14 is sleeved on the clutch key 10 , and the clutch assembly support sleeve 14 is connected to the clutch through a mechanical bearing 21 . The key 10 is movably connected; the mechanical bearing 21 is located between the clutch key 10 and the clutch assembly support jacket 14, the outside of the mechanical bearing 21 is fixedly connected with the clutch assembly support jacket 14, and the inside of the mechanical bearing 21 is fixedly connected with the clutch key 10; The mechanical bearing 21 can be an angular contact ball bearing, a roller bearing or a radial thrust bearing, and all bearings that can realize axial and radial positioning at the same time can be used; the upper part of the clutch assembly supporting the outer casing 14 and the axial thrust ball The bearing 13 is fixedly connected, and the lower part of the support casing 14 of the clutch assembly is fixedly connected with the magneto-electric sensitive component 5 . The inner race and the balls of the mechanical bearing 21 rotate with the rotation of the spindle 1 , but the outer race of the mechanical bearing 21 and the supporting outer casing 14 of the clutch assembly do not move. The mechanical bearing 21 realizes the centripetal positioning of the spindle bar 1, prevents the deflection phenomenon that occurs when the spindle bar 1 and the clutch key 10 are connected and rotates together, and enhances the axial rigidity and centripetal positioning of the spindle bar 1 and the clutch key 10.

In order to axially press the clutch key 10 and the inner race of the fixed mechanical bearing 21 and prevent axial play, the clutch key 10 and the mechanical bearing 21 are pressed together by the clutch key end cover 12; the clutch key end cover 12 is located at Between the clutch assembly support assembly 11 and the magnet 4, the upper part of the clutch key end cap 12 is provided with a contact table, the clutch key end cap 12 is sleeved on the clutch key 10, and the clutch key end cap 12 and the clutch key 10 are fixed by bolts Connection; the contact table is pressed against the inner race of the mechanical bearing 21 .

As shown in FIG. 7 , in order to axially support the clutch assembly support jacket 14 , the clutch assembly support assembly 11 further includes a sleeve support 15 , and the sleeve support 15 is fixed to the inner wall of the clutch assembly support jacket 14 . connect.

As shown in FIG. 8 , in order to provide axial support to the axial thrust ball bearing 13 and play the role of force transmission, the clutch assembly 3 further includes a clutch assembly support end cover 16 , and the clutch assembly support end cover 16 is sleeved On the clutch key 10, one side of the clutch assembly supporting end cover 16 is provided with a groove II, and the other side of the clutch assembly supporting end cover 16 is provided with a connecting platform, and the connecting platform is fixedly connected to the inner wall of the clutch component supporting assembly 11; The axial thrust ball bearing 13 is arranged in the groove II; the number of the clutch assembly supporting outer casings 14 is at least two, and the two clutch assembly supporting outer casings 14 are fixedly connected through the clutch assembly supporting end cover 16 . The lower part of one clutch assembly supporting casing 14 is fixedly connected with the side wall of the groove II, and the upper part of the other clutch assembly supporting casing 14 is tightly fitted with the connecting platform of the supporting end cover 16 .

In this embodiment, the mechanical bearing 21 is an angular contact ball bearing; the number of the clutch assembly support assembly 11 is two, and a clutch assembly support assembly 11 includes a clutch assembly support jacket 14 and a sleeve support 15 and two mechanical bearings 21; a bump is provided on the inner wall of one side of the clutch assembly support jacket 14, the clutch assembly support jacket 14 is located between the two mechanical bearings 21, the bump, the outer race of the first mechanical bearing 21 , The clutch assembly support jacket 14 , the outer race of the second mechanical bearing 21 and the connection platform are closely arranged and connected on the inner wall of the clutch assembly support jacket 14 , which can play an axial support role for the mechanical bearing 21 .

As shown in FIG. 17 , the magnetoelectric sensitive component 5 also includes an induction coil bobbin 7 and an induction coil bobbin end cover 8, and the induction coil bobbin 7 and the induction coil bobbin end cover 8 are both sleeved on the clutch assembly 3; The upper part of the induction coil bobbin end cover 8 is fixedly connected with the clutch assembly 3 through the induction coil bobbin end cover 8; the lower part of the induction coil bobbin end cover 8 is provided with a concave part; Connection, the lower circumferential direction of the induction coil bobbin 7 is provided with a groove I; the induction coil is located in the groove I, and is wound on the inner wall of the groove I, so that it is convenient to arrange and protect the induction coil, and avoid other structures in the assembly process. Squeeze the induction coil. The end cover 8 of the induction coil bobbin can axially support the clutch assembly 3, and the induction coil bobbin is arranged outside the magnet.

Preferably, insulating gaskets are provided between the induction coil bobbin 7 and the clutch assembly 3 and between the induction coil bobbin 7 and the end cover 8 of the induction coil bobbin, and the insulating gasket is connected to the clutch assembly 3 and the end cover 8 of the induction coil bobbin. Adhesion, the insulating gasket plays the role of isolating the induction coil from the clutch key 10 and the end cover 8 of the induction coil bobbin in terms of electrical performance.

Further, the integrated conversion module 6 includes a power calculation module, a memory and a signal output module, the power calculation module includes a power amplifier, an analog multiplier and a power factor controller, and the input of the analog multiplier and the signal extraction resistance Rf Electrical connection, the output of the analog multiplier is electrically connected with the power amplifier; the power amplifier is electrically connected with the power factor controller; the power factor controller is electrically connected with the memory; the memory is electrically connected with the signal output module; the signal The output module includes an analog-to-digital conversion chip, the input of the analog-to-digital conversion chip is electrically connected to the memory, and the output of the analog-to-digital conversion chip passes out from the bottom of the pin 2 through a wire 18 . The power calculation module is used to measure the induced voltage and induced current on the signal extraction resistor Rf and calculate the real-time power consumption of the spindle; the memory is used to store the power data; the signal output module is used to output the real-time power consumption of the spindle to the outside to judge The working state of the spindle. The present invention can convert the power consumed by the rotation of the spindle into an electrical signal that is easy to measure without the need for an auxiliary power supply. For the real-time power consumption of the spindle, the integrated conversion module 6 can also convert the power consumption, induced voltage and induced current of the spindle into the sensor output range specified in the national standard of our country. In this embodiment, the model of the power amplifier is LM1875, the model of the analog multiplier is ADL5391, and the model of the power factor controller is TDA4863G; the memory includes a 64-bit read-write memory, and the model of the 64-bit read-write memory is 74LS89 ; The model of the analog-to-digital conversion chip is AD0832.

An insulating isolation plate is arranged between the integrated conversion module 6 and the magnetoelectric sensitive assembly 5, the insulating isolation plate is located on the support plate, the insulating isolation plate is fixedly connected with the spindle foot shell 2-2, and the insulating isolation plate and the support plate are opposite to each other. The clutch assembly 3 and the magnetoelectric sensitive assembly 5 play the role of axial support. The upper part of the insulating isolation plate is in contact with the lower part of the induction coil bobbin 7, and the induction coil is located between the insulating isolation plate and the induction coil bobbin, so the insulating isolation plate separates the magnetoelectric sensitive component 5 and the integrated conversion module 6, forming a pair of Protection of magneto-sensitive components 5.

In this embodiment, the end cover 2-1 of the spindle foot and the shell of the spindle foot 2-2 are made of 45# steel by conventional machining; as shown in Figure 21 and Figure 22, the spindle 1-1 and the spindle 1- 2 are all made of ball bearing steel material, spindle 1-1 and spindle 1-2 are assembled to form spindle 1; as shown in Figure 10, the clutch assembly supports the outer sleeve 14, the sleeve support 15 and the clutch assembly support The end cover 16 is made of 45# steel by conventional machining. The mechanical bearing 21, the clutch support jacket 14, the sleeve support 15 and the clutch support end cover 16 are assembled to form the clutch component support assembly 11; as shown in Figure 11 , the clutch key 10 is made of ball bearing steel material; as shown in Figure 12, the clutch key end cover 12 is made of 45# steel through conventional machining, as shown in Figure 18, the axial thrust ball bearing 13 , Two clutch assembly support assemblies 11, clutch key end caps 12, and standard hexagon socket head bolts are assembled together, the first clutch assembly support assembly 11 on one side of the clutch assembly support end cap 16 and the axial thrust ball bearing 13 Connection, the other side of the first clutch assembly supporting assembly 11 is connected with the clutch assembly supporting end cover 16 on one side of the second clutch assembly supporting assembly 11, and the second clutch assembly supporting the other side of the assembly 11 It is connected to the end cover 8 of the induction coil bobbin, and the end cover 12 of the clutch key is connected to the clutch key 10 and the mechanical bearing 21 through standard hexagon socket head bolts; as shown in FIG. Processed and manufactured, as shown in Figure 16, the end cover 8 of the induction coil bobbin is made of 45# steel by conventional machining. In addition, in this embodiment, all the places that need to be lubricated inside the clutch assembly 3 are grease lubricated, and the magnet 4 is a magnet.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (9)

1. A magnetoelectric spinning spindle power sensor, comprising a spindle rod (1) and a spindle foot (2), the spindle rod (1) and the spindle foot (2) being movably connected, and characterized in that the spindle foot (2) ) is provided with a clutch assembly (3), a magnet (4), a magneto-electric sensitive assembly (5) and an integrated conversion module (6), the clutch assembly (3) is sleeved on the lower part of the spindle (1), and The clutch assembly (3) is fixedly connected with the spindle (1); the magneto-electric sensitive component (5) is sleeved on the side of the clutch component (3) away from the spindle (1), and the magneto-electric sensitive component (5) is fixedly connected to the outside of the clutch assembly (3); the induction coil of the magneto-electrical sensitive assembly (5) is matched with the magnet (4); the magnet (4) is fixedly connected to the inside of the clutch assembly (3); the The signal extraction resistance Rf of the magneto-electric sensitive component (5) is electrically connected with the induction coil to form a closed loop, and the signal extraction resistance Rf is electrically connected with the integrated conversion module (6); the integrated conversion module (6) includes a power calculation module, a memory and a signal output module, the power calculation module includes a power amplifier, an analog multiplier and a power factor controller, the input of the analog multiplier is electrically connected with the signal extraction resistor Rf, and the output of the analog multiplier is electrically connected with the power amplifier; The power amplifier is electrically connected to the power factor controller; the power factor controller is electrically connected to the memory; the memory is electrically connected to the signal output module; the signal output module includes an analog-to-digital conversion chip, and the analog-to-digital conversion chip is electrically connected to the memory connect. 2 . The magnetoelectric spinning spindle power sensor according to claim 1 , wherein the clutch assembly ( 3 ) comprises a clutch key ( 10 ) and a clutch assembly support assembly ( 11 ), and the clutch key ( 10) is arranged in the clutch assembly support assembly (11), and the clutch key (10) is movably connected with the clutch assembly support assembly (11); the upper part of the clutch key (10) is provided with a support table, the clutch key (10) ) is fixedly connected to the outrigger shaft at the lower part of the spindle (1); the support platform is movably connected with the clutch assembly support assembly (11) through the axial thrust ball bearing (13); the axial thrust ball bearing (13) ) is connected with the support table, and the other side of the axial thrust ball bearing (13) is connected with the upper part of the clutch assembly support assembly (11); the lower part of the clutch assembly support assembly (11) is connected to the magnetoelectric sensitive The assembly (5) is connected; the magnet (4) is fixedly connected with the lower part of the clutch key (10). 3 . The magnetoelectric spinning spindle power sensor according to claim 2 , wherein the clutch assembly support assembly ( 11 ) comprises a clutch assembly support jacket ( 14 ), and the clutch assembly support jacket ( 14 ) It is movably connected with the clutch key (10), and the upper part of the clutch assembly support sleeve (14) is connected with the axial thrust ball bearing (13), and the lower part of the clutch assembly support sleeve (14) is fixedly connected with the magnetoelectric sensitive component (5). 4 . The magnetoelectric spinning spindle power sensor according to claim 3 , wherein the clutch assembly ( 3 ) further comprises a clutch key end cover ( 12 ), and the clutch key end cover ( 12 ) is located in the clutch Between the component support assembly (11) and the magnet (4), the clutch key end cover (12) is fixedly connected with the clutch key (10). 5. The magneto-electric spinning spindle power sensor according to claim 3 or 4, characterized in that, the clutch component support assembly (11) further comprises a clutch component support end cover (16), the clutch component supports The end cover (16) is sleeved on the clutch key (10), one side of the clutch assembly supporting end cover (16) is provided with a groove II, and the other side of the clutch assembly supporting end cover (16) is provided with a connecting platform for connecting The platform is connected with the inner wall of the clutch assembly support jacket (14); the axial thrust ball bearing (13) is arranged in the groove II; the number of the clutch assembly support jacket (14) is at least two, and two clutches The component support jackets (14) are connected through the clutch component support cover (16). 6. The magnetoelectric spinning spindle power sensor according to claim 1, 2 or 3, wherein the magnetoelectric sensitive component (5) further comprises an induction coil bobbin (7) and an induction coil bobbin end cover ( 8), the upper part of the induction coil bobbin (7) is fixedly connected with the clutch assembly (3) through the induction coil bobbin end cover (8), and the lower part of the induction coil bobbin (7) is provided with a groove I in the circumferential direction; the induction coil is provided with In the groove I, and the induction coil bobbin (7) is arranged outside the magnet (4). 7. The magnetoelectric spinning spindle power sensor according to claim 6, characterized in that, between the induction coil bobbin (7) and the clutch assembly (3), and between the induction coil bobbin (7) and the end of the induction coil bobbin An insulating gasket is arranged between the covers (8), and the insulating gasket is fixedly connected with the clutch assembly and the end cover (8) of the induction coil skeleton. 8. The magnetoelectric spinning spindle power sensor according to claim 1, wherein the integrated conversion module (6) is located at the bottom of the spindle foot (2), and the integrated conversion module (6) is connected to the magnetoelectric sensitive An insulating isolation plate is arranged between the components (5); the insulating isolation plate is connected with the spindle feet (2). 9. The magnetoelectric spinning spindle power sensor according to claim 1 or 8, wherein the spindle foot (2) comprises a spindle foot end cover (2-1) and a spindle foot shell (2-2) , the spindle foot end cover (2-1) is provided with an output wire hole (2-3), and the spindle foot end cover (2-1) is connected with one side of the spindle foot housing (2-2); the The other side of the spindle foot shell (2-2) is movably connected with the spindle rod (1), and a support plate is arranged in the spindle foot shell (2-2); the integrated conversion module (6) is arranged on the spindle foot end cover In (2-1); the spindle bar (1) includes a spindle shaft (1-1) and a spindle disk (1-2), and the spindle disk (1-2) is movably connected with the spindle shaft (1-1) ; The underside of the spindle shaft (1-1) is provided with an outrigger shaft, and after the spindle shaft (1-1) is assembled with the ingot disc (1-2), the outrigger shaft is assembled and connected with the clutch assembly (3); The spindle plate (1-2) is fixedly connected with the spindle foot shell (2-2).

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