CN115790927A - Mine hoist main shaft torque detection system - Google Patents
Mine hoist main shaft torque detection system Download PDFInfo
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- CN115790927A CN115790927A CN202310046107.9A CN202310046107A CN115790927A CN 115790927 A CN115790927 A CN 115790927A CN 202310046107 A CN202310046107 A CN 202310046107A CN 115790927 A CN115790927 A CN 115790927A
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Abstract
The invention belongs to the technical field of torque measurement, and particularly relates to a mine hoist spindle torque detection system which comprises a monitoring unit and a measuring unit, wherein the monitoring unit comprises a light chamber, the light chamber is positioned at the upper part of an upper seat, the upper seat and a fixed seat are buckled on an electric spindle, the upper seat and the fixed seat are fixed through a hoop, the number of the upper seat and the fixed seat is two, a loading disc is sleeved at one shaft end of the electric spindle, and the measuring unit is arranged below the loading disc. The torque detection system provided by the invention can realize quick qualitative real-time monitoring of the torque, can realize quantitative determination of the torque when needed, is simple and convenient to install, does not interfere with each other and has strong practicability.
Description
Technical Field
The invention belongs to the technical field of torque measurement, and particularly relates to a mine hoist spindle torque detection system.
Background
The hoist is a typical rotating machine widely used in mines, and has a very important position in mining industry production as the throat of the mine. With the rapid development of modern industry and scientific technology and the requirement for high production efficiency, the structure of the mine hoist is increasingly complex, the single hoisting capacity is increasingly large, the hoisting speed is increasingly fast, and the hoisting distance is also increasingly large. Once faults such as tank clamping, slipping, overwinding and overdischarging occur in the lifting process of the mine hoist, chain reaction can be caused, the operation of the equipment is influenced by the working condition state of the mine hoist, the subsequent production is also influenced, and even machine damage and people death accidents are caused in severe cases, so that great loss is caused to national economy. When the elevator is blocked, skidded, overwound and broken, the torque of the main shaft can be changed correspondingly, and the torque of the main shaft is easy to change when the motor rotates at high speed. In addition, in order to ensure the machining accuracy and reliability, a performance analysis test when the electric spindle is loaded needs to be completed, and performance analysis in a static state or a low-speed state needs to be performed.
At present, two methods for measuring the torque of a rotating shaft in China are mainly used, the method is widely applied to measuring the torque by a phase method, a torque sensor is generally used for directly measuring the rotating speed and the torque of the electric main shaft so as to determine an external characteristic curve, an efficiency curve and the like of a motor to be measured, and the methods can be classified into an electromagnetic type, a photoelectric type, a laser type, a capacitance type and the like according to different measuring sensors. However, for a high-speed motor, due to the problems of serious jitter and stress loss and the like caused by the high-speed rotation of the motor, the torque sensor cannot accurately measure the torque and is complex to install.
The second method is a strain method, wherein a strain bridge is arranged on a rotating shaft, the magnitude of the torque borne by the rotating shaft is calculated by measuring the stress strain value of the surface of the rotating shaft and substituting the measured value into a corresponding mechanical formula. The method belongs to a contact type measuring method, and the conductive slip ring is very easy to damage a torque measuring device and a measured device when contacting a high-speed rotating shaft for a long time. Torque measurement of the rotating shaft can also be achieved through electromagnetic induction, but the electromagnetic induction can affect effective transmission of wireless data.
In summary, these methods all have the disadvantages of complex installation structure, poor applicability, inaccurate quantitative determination, etc., and the existing monitoring equipment has a too high testing cost, so it is necessary to provide a torque detection method which is suitable for both high-speed and static states and does not interfere with wireless signal transmission.
Disclosure of Invention
The invention aims to provide a mine hoist main shaft torque detection system, which realizes quantitative determination of main shaft torque in a high-speed running state through a determination unit by observing qualitative change of the torque of a main shaft in a static or low-speed state through a monitoring unit.
In order to achieve the purpose, the invention provides the following technical scheme: a mine hoist main shaft torque detection system comprises a monitoring unit and a measuring unit, wherein the monitoring unit comprises a light chamber, the light chamber is positioned at the upper part of an upper seat, the upper seat and a fixed seat are buckled on an electric main shaft, the upper seat and the fixed seat are fixed through a hoop, the number of the upper seat and the fixed seat is two, a loading disc is sleeved at one shaft end of the electric main shaft, and the measuring unit is arranged below the loading disc; the measuring unit comprises a direct current electromagnet and a pressure sensor, the direct current electromagnet is installed below the loading disc in the vertical direction, the direct current electromagnet is U-shaped, two ends of the direct current electromagnet are respectively wound with a direct current excitation coil, the direct current electromagnet is erected on the magnet support, and the pressure sensor is arranged below the magnet support.
Preferably, the pressure sensor is a one-way pull pressure sensor.
Preferably, the monitoring units are arranged on the outer sides of the two sets of upper seats and the fixed seat, the monitoring units further comprise an inner ring, an outer ring and a light source, the inner ring is sleeved on the electric spindle, a clamping strip groove is formed in the outer wall of the inner ring, a clamping strip is arranged on the inner wall of the outer ring, the outer ring is fastened in the clamping strip groove through the clamping strip, and the outer ring and the inner ring are partially fastened.
Preferably, the perpendicular top surface of outer loop is equipped with the mounting groove, two fixed light source and the photosensitive sensor of being equipped with perpendicularly respectively in the mounting groove, the light is indoor to be equipped with the light trap, the light trap highly equals with light source and photosensitive sensor, the light source sets up with two light traps of photosensitive sensor interval.
Preferably, the inner ring and the electric spindle are vertically provided with screw holes in a penetrating manner, and fixing screws are arranged in the screw holes and can fix the inner ring and the electric spindle.
Preferably, a signal processing unit is further arranged beside the mounting groove on the outer ring, and the signal processing unit is respectively connected with the light source and the photosensitive sensor.
Compared with the prior art, the invention has the beneficial effects that:
1. the mine hoist spindle is qualitatively monitored in real time through the light intensity, wiring is reduced without damaging the connection structure of original equipment through wireless signal transmission, meanwhile, the interference of electromagnetic induction in a measuring unit on wireless signals is avoided, the monitoring is simple and convenient, the torque observation of a rotating shaft under the conditions of static state, low rotating speed and the like can be realized, and the practicability is high.
2. The invention adopts the pressure sensor to realize the quantitative test of the non-contact loading force and the torque of the electric spindle in high-speed motion, the test method effectively solves the problems of complex test device, overhigh cost and the like of the non-contact loading force and the torque of the high-speed electric spindle, simplifies the structure of the test device, greatly reduces the cost of test equipment, and has the advantages of simple and convenient test method, high precision, easy realization and obvious economic benefit.
Drawings
FIG. 1 is a front view of a mine hoist spindle torque detection system;
FIG. 2 is a left side view of a mine hoist spindle torque detection system;
fig. 3 is a cross-sectional view of an outer ring and an inner ring of a mine hoist spindle torque detection system.
In the figure: 1. the device comprises a monitoring unit, 2, a measuring unit, 3, an electric spindle, 4, a loading disc, 5, an upper seat, 6, a fixed seat, 7, a clamp, 8, a direct current electromagnet, 9, a pressure sensor, 10, a signal processing unit, 11, a light chamber, 12, a light source, 13, a light hole, 14, a photosensitive sensor, 15, a mounting groove, 16, an inner ring, 17, an outer ring, 18, a fixing screw, 19, a clamping strip, 20, a clamping strip groove, 21 and a magnet support.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Embodiments of the present invention will be described in detail below with reference to specific examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer.
Referring to fig. 1-3, a mine hoist spindle torque detection system comprises a monitoring unit 1 and a measuring unit 2, wherein the monitoring unit 1 comprises a light chamber 11, the light chamber 11 is positioned at the upper part of an upper seat 5, the upper seat 5 and a fixed seat 6 are buckled on an electric spindle 3, the upper seat 5 and the fixed seat 6 are fixed through a hoop 7, the upper seat 5 and the fixed seat 6 are in two sets, a loading disc 4 is sleeved at one shaft end of the electric spindle 3, the loading disc 4 is made of high-permeability iron-nickel alloy, and the measuring unit 2 is arranged below the loading disc 4.
Specifically, survey unit 2 includes direct current electromagnet 8 and pressure sensor 9, and direct current electromagnet 8 is installed to loading dish 4 vertical direction below, and direct current electromagnet 8 is the U-shaped and both ends have twined direct current excitation coil respectively, direct current electromagnet 8 erects on magnet support 21, pressure sensor 9 is installed to the below symmetry of magnet support 21, leaves certain clearance between direct current electromagnet 8 and the loading dish 4, pressure sensor 9 is the one-way pressure sensor that draws, and the range is 1000N.
Further, the monitoring units 1 are arranged on the outer sides of the two sets of upper seats 5 and the fixed seats 6, each monitoring unit 1 further comprises an inner ring 16, an outer ring 17 and a light source 12, the inner ring 16 is sleeved on the electric spindle 3, a clamping strip groove 20 is formed in the outer wall of the inner ring 16, a clamping strip 19 is arranged on the inner wall of the outer ring 17, the outer ring 17 is fastened in the clamping strip groove 20 through the clamping strip 19, and the outer ring 17 and the inner ring 16 are partially fastened. The vertical plane top surface of outer loop 17 is equipped with mounting groove 15, two fixed perpendicular light source 12 and the photosensor 14 of being equipped with respectively in the mounting groove 15, be equipped with light trap 13 in the light room 11, light trap 13 highly equals with light source 12 and photosensor 14, light source 12 sets up with two light trap 13 in the photosensor 14 interval.
Furthermore, screw holes are vertically formed in the inner ring 16 and the electric spindle 3 in a penetrating manner, fixing screws 18 are arranged in the screw holes, and the fixing screws 18 can realize the fixing of the inner ring 16 and the electric spindle 3.
Furthermore, a signal processing unit 10 is further arranged on the outer ring 17 and beside the mounting groove 15, the signal processing unit 10 is respectively connected with the light source 12 and the photosensitive sensor 14, in practical application, the signal processing unit 10 comprises a power supply and a signal processing circuit connected with the output end of the power supply, the input end of the signal processing circuit is connected with the output end of the photosensitive sensor, the output end of the signal processing circuit is connected with the wireless transmitting module, and in addition, the power supply also provides electric energy for the light source 12.
The specific working process is as follows: during operation, two sets of upper seats 5 and fixed seats 6 of a monitoring unit 1 in a torque detection device of an electric spindle 3 are respectively installed on a main shaft of a hoist at intervals through a hoop 7 and kept in a fixed state, then an outer ring 17 and an inner ring 16 are installed on the outer side of the main shaft, the inner ring 16 is fixed on the electric spindle 3 through a fixing screw 18, meanwhile, a clamping strip 19 on the outer ring 17 is clamped in a clamping strip groove 20 of the inner ring 16, and an installation groove 15 on the outer ring 17 and a light source 12 are kept in a vertical state, so that the light source 12, a light hole 13 of a light chamber 11 and a photosensitive sensor 14 are located on the same horizontal line, then a measurement unit 2 is installed, mainly a loading disc 4 is sleeved on one side shaft end of the electric spindle 3, and a magnet support 21, a direct current electromagnet 8 and a pressure sensor 9 are fixedly installed under the loading disc 4.
When the torque of the electric spindle 3 is zero, the light of the light source 12 can be transmitted to the photosensitive sensor 14 through the light hole 13, and at the moment, the photosensitive sensor 14 receives the most light and has the strongest output signal; when the torque of the electric spindle 3 is not zero, a misalignment occurs between the light source 12 and the photosensor 14, so that the light reaching the photosensor 14 is reduced and the output signal is correspondingly reduced. The signals changed by the photosensitive sensor 14 are processed by the signal processing unit 10 and then wirelessly transmitted to the main processor to realize real-time monitoring of the torque of the main shaft of the mine hoist.
During dynamic high-speed operation, due to the interaction between the air-gap magnetic field generated by the direct current electromagnet 8 and the loading disc 4, radial Maxwell forces in two directions are generated on the surface of the loading disc 4 with the radius of 1m, the final resultant force of the two forces is in a vertical downward direction, and the force is the radial electromagnetic force F.
When the measurement needs to be measured, the measurement unit of the device is used for implementing and calculating according to the following steps:
(1) When the electromagnet of the measuring unit is not powered on, the static weight values of the magnet bracket 21 and the direct current electromagnet 8 are obtained according to the detection value of the pressure sensor 9;
(2) Switching on a frequency converter power supply of the electric main shaft 3 and a field excitation power supply of the direct current electromagnet 8, operating at a high speed to form vertical radial electromagnetic force, and obtaining a result obtained by subtracting a static weight value from a total pressure value detected by the pressure sensor 9, namely a test value of the radial electromagnetic force F;
(3) The product of the radial electromagnetic force F and the force arm L is the specific torque value M.
The designed measuring unit 2 realizes the radial electromagnetic force calculation when the electric spindle 3 runs at high speed; the monitoring unit 1 realizes the torque observation of the electric spindle in static or low-speed rotation.
In order to better illustrate the invention, the following specific examples are also provided.
Example 1
The mine hoist spindle torque detection system comprises a monitoring unit 1 and a measuring unit 2, wherein the monitoring unit 1 comprises a light chamber 11, the light chamber 11 is located on the upper portion of an upper seat 5, the upper seat 5 and a fixing seat 6 are buckled on an electric spindle 3, the upper seat 5 and the fixing seat 6 are fixed through a hoop 7, the number of the upper seat 5 and the number of the fixing seat 6 are two, a loading disc 4 is sleeved at one shaft end of the electric spindle 3, the loading disc 4 is made of high-permeability iron-nickel alloy, and the measuring unit 2 is arranged below the loading disc 4.
The measuring unit 2 comprises a direct current electromagnet 8 and a pressure sensor 9, the direct current electromagnet 8 is installed below the loading disc 4 in the vertical direction, the direct current electromagnet 8 is U-shaped, two ends of the direct current electromagnet 8 are respectively wound with a direct current excitation coil, the direct current electromagnet 8 is erected on the magnet support 21, the pressure sensor 9 is arranged below the magnet support 21, the pressure sensor 9 is a one-way pull pressure sensor, and the measuring range is 1000N.
The outer ring 17 is located the mounting groove 15 side and still is equipped with signal processing unit 10, signal processing unit 10 connects light source 12 and photosensitive sensor 14 respectively, and in practical application, signal processing unit 10 includes the power and the signal processing circuit who links to each other with the power output end, and signal processing circuit's input links to each other with photosensitive sensor's output, and signal processing circuit's output links to each other with wireless transmitting module, and in addition, the power still provides the electric energy for light source 12.
Example 2
The mine hoist spindle torque detection system comprises a monitoring unit 1 and a measuring unit 2, wherein the monitoring unit 1 comprises a light chamber 11, the light chamber 11 is located on the upper portion of an upper seat 5, the upper seat 5 and a fixing seat 6 are buckled on an electric spindle 3, the upper seat 5 and the fixing seat 6 are fixed through a hoop 7, the number of the upper seat 5 and the number of the fixing seat 6 are two, a loading disc 4 is sleeved at one shaft end of the electric spindle 3, the loading disc 4 is made of high-permeability iron-nickel alloy, and the measuring unit 2 is arranged below the loading disc 4.
The monitoring units 1 are arranged on the outer sides of the two sets of upper seats 5 and the outer sides of the fixed seats 6, each monitoring unit 1 further comprises an inner ring 16, an outer ring 17 and a light source 12, the inner ring 16 is sleeved on the electric spindle 3, a clamping strip groove 20 is formed in the outer wall of the inner ring 16, a clamping strip 19 is arranged on the inner wall of the outer ring 17, the outer ring 17 is fastened in the clamping strip groove 20 through the clamping strip 19, and the outer ring 17 and the inner ring 16 are partially fastened. The top surface of the vertical surface of the outer ring 17 is provided with mounting grooves 15, two light sources 12 and photosensitive sensors 14 are respectively and fixedly and vertically arranged in the mounting grooves 15, light holes 13 are arranged in the light chamber 11, the heights of the light holes 13 are equal to those of the light sources 12 and the photosensitive sensors 14, and the light sources 12 and the photosensitive sensors 14 are arranged at intervals of the two light holes 13.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A mine hoist main shaft torque detection system, includes monitoring unit (1) and survey unit (2), its characterized in that: the monitoring unit (1) comprises an optical chamber (11), the optical chamber (11) is positioned at the upper part of an upper seat (5), the upper seat (5) and a fixed seat (6) are buckled on an electric spindle (3), the upper seat (5) and the fixed seat (6) are fixed through a hoop (7), the number of the upper seat (5) and the fixed seat (6) is two, a loading disc (4) is sleeved at one shaft end of the electric spindle (3), and a measuring unit (2) is arranged below the loading disc (4); survey unit (2) including direct current electromagnet (8) and pressure sensor (9), direct current electromagnet (8) are installed to load dish (4) vertical below, and direct current electromagnet (8) are the U-shaped and both ends have twined direct current excitation coil respectively, direct current electromagnet (8) erect on magnet support (21), the below of magnet support (21) is pressure sensor (9).
2. The mine hoist spindle torque detection system of claim 1, wherein: the pressure sensor (9) is a one-way pull pressure sensor.
3. The mine hoist spindle torque sensing system of claim 1, wherein: the outer sides of the two sets of upper seats (5) and the fixed seats (6) are respectively provided with a monitoring unit (1), each monitoring unit (1) further comprises an inner ring (16), an outer ring (17) and a light source (12), the inner ring (16) is sleeved on the electric spindle (3), the outer wall of the inner ring (16) is provided with a clamping strip groove (20), the inner wall of the outer ring (17) is provided with a clamping strip (19), the outer ring (17) is fastened in the clamping strip groove (20) through the clamping strip (19), and the outer ring (17) and the inner ring (16) are partially fastened.
4. The mine hoist spindle torque detection system of claim 3, wherein: the perpendicular face top surface of outer loop (17) is equipped with mounting groove (15), two fixed perpendicular light source (12) and photosensitive sensor (14) of being equipped with respectively in mounting groove (15), be equipped with light trap (13) in light room (11), light trap (13) and light source (12) and photosensitive sensor (14) height equivalence, light source (12) and two light trap (13) settings of photosensitive sensor (14) interval.
5. The mine hoist spindle torque detection system of claim 3, wherein: the inner ring (16) and the electric spindle (3) are vertically provided with screw holes in a penetrating manner, fixing screws (18) are arranged in the screw holes, and the fixing of the inner ring (16) and the electric spindle (3) can be realized through the fixing screws (18).
6. The mine hoist spindle torque detection system of claim 3, wherein: and a signal processing unit (10) is further arranged on the outer ring (17) and beside the mounting groove (15), and the signal processing unit (10) is respectively connected with the light source (12) and the photosensitive sensor (14).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310046107.9A CN115790927B (en) | 2023-01-31 | 2023-01-31 | Main shaft torque detection system of mine hoist |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310046107.9A CN115790927B (en) | 2023-01-31 | 2023-01-31 | Main shaft torque detection system of mine hoist |
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| CN115790927A true CN115790927A (en) | 2023-03-14 |
| CN115790927B CN115790927B (en) | 2023-05-23 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047372U (en) * | 1989-01-29 | 1989-11-08 | 盐城师范专科学校科教仪器厂 | Torque and rotating speed measurement device |
| CN102128697A (en) * | 2010-12-15 | 2011-07-20 | 西安理工大学 | High-speed motorized spindle non-contact loading force and torque testing device and method |
| CN103792034A (en) * | 2014-01-22 | 2014-05-14 | 中国矿业大学 | Axial differential type mine hoist spindle torque detecting device |
| CN105067265A (en) * | 2015-09-25 | 2015-11-18 | 山西新环橡塑制品有限公司 | Performance detection device for automobile pressure bearing |
| CN111847190A (en) * | 2019-04-30 | 2020-10-30 | 南京梅山冶金发展有限公司 | Mine winder tail rope monitoring device |
| CN212091715U (en) * | 2019-10-22 | 2020-12-08 | 湖南沁森高科新材料有限公司 | End cover, membrane element shell and membrane element comprising shell |
| CN217111428U (en) * | 2021-09-30 | 2022-08-02 | 山东超同步智能装备有限公司 | Electric spindle testing device |
-
2023
- 2023-01-31 CN CN202310046107.9A patent/CN115790927B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047372U (en) * | 1989-01-29 | 1989-11-08 | 盐城师范专科学校科教仪器厂 | Torque and rotating speed measurement device |
| CN102128697A (en) * | 2010-12-15 | 2011-07-20 | 西安理工大学 | High-speed motorized spindle non-contact loading force and torque testing device and method |
| CN103792034A (en) * | 2014-01-22 | 2014-05-14 | 中国矿业大学 | Axial differential type mine hoist spindle torque detecting device |
| CN105067265A (en) * | 2015-09-25 | 2015-11-18 | 山西新环橡塑制品有限公司 | Performance detection device for automobile pressure bearing |
| CN111847190A (en) * | 2019-04-30 | 2020-10-30 | 南京梅山冶金发展有限公司 | Mine winder tail rope monitoring device |
| CN212091715U (en) * | 2019-10-22 | 2020-12-08 | 湖南沁森高科新材料有限公司 | End cover, membrane element shell and membrane element comprising shell |
| CN217111428U (en) * | 2021-09-30 | 2022-08-02 | 山东超同步智能装备有限公司 | Electric spindle testing device |
Non-Patent Citations (1)
| Title |
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| 邱荣华等: "高速电主轴非接触电磁加载装置设计与实现" * |
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