CN215665376U - Contact type revolution speed transducer - Google Patents

Contact type revolution speed transducer Download PDF

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Publication number
CN215665376U
CN215665376U CN202121860316.XU CN202121860316U CN215665376U CN 215665376 U CN215665376 U CN 215665376U CN 202121860316 U CN202121860316 U CN 202121860316U CN 215665376 U CN215665376 U CN 215665376U
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China
Prior art keywords
unit
belt conveyor
main control
alarm
control unit
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Active
Application number
CN202121860316.XU
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Chinese (zh)
Inventor
代威
卢凯
李修飞
代志聪
戴翔
王永左
戴喜
王立菊
王勇
王国红
甘雅丽
谢家满
谢清清
胡娟娟
戴宜尹
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Huainan City Runjin Mining Electrical And Mechanical Co ltd
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Huainan City Runjin Mining Electrical And Mechanical Co ltd
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Priority to CN202121860316.XU priority Critical patent/CN215665376U/en
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Abstract

The utility model provides a contact type rotating speed sensor which comprises a main control unit arranged in a shell, a measuring unit connected with the main control unit and a protection unit; the main control unit is used for receiving and processing the data sent by the measuring unit and sending an instruction to the protection unit; the measuring unit is connected with a magnetic sensing element arranged in the shell and magnetic steel arranged on a driven roller of the rubber belt conveyor, and the magnetic sensing element sends an induced pulse signal to the main control unit; the protection unit is connected with the rubber belt conveyor and the alarm, and controls the operation of the rubber belt conveyor and the alarm to give an alarm by receiving the instruction sent by the main control unit; the utility model is convenient for low-speed slipping and overspeed protection of the rubber belt conveyor belt, and avoids the condition that the service life of the driving device is influenced because the driving device driving the driving roller to operate is in a long-time overload running state.

Description

Contact type revolution speed transducer
Technical Field
The utility model relates to the technical field of sensors, in particular to a contact type rotating speed sensor.
Background
The rotation speed sensor is a sensor that converts the rotation speed of a rotating object into an electric quantity to be output. The rotation speed sensor belongs to an indirect measuring device and can be manufactured by a mechanical method, an electrical method, a magnetic method, an optical method and a mixed method. The rotating speed sensor can be divided into an analog type and a digital type according to different signal forms; the rotation speed sensor uses a magnetic sensitive resistor as an inductive element, and is a novel rotation speed sensor. The core component adopts a magnetic sensitive resistor as a detection element, and the noise is reduced through a brand new signal processing circuit, so that the function is more complete. Compared with the output waveform of other types of tooth speed sensors, the measured speed has extremely small error and good consistency of linear characteristics. When the tested object is provided with a convex (or concave) magnetic or magnetic conductive material, the sensor outputs a pulse signal related to the rotation frequency along with the rotation of the tested object, so as to achieve the purpose of sending a signal for speed measurement or displacement detection. The gear speed sensor has the following characteristics: the sensor has high sensitivity, high reliability, long service life and long triggering distance element, can realize long-distance transmission, and has strong anti-electromagnetic interference capability, good impact resistance and shock resistance, and the signal triggering is made of iron (soft) magnetic materials.
The mining belt conveyor generally comprises a conveyor belt, a driving roller and a driven roller, wherein the driving roller is a key part of the belt conveyor and is used for transmitting torque provided by a driving device onto the conveyor belt, the driving roller and the conveyor belt are driven by friction force, and materials are transmitted by utilizing static friction force of the conveyor belt. The driven roller supports the load on the belt and rotates as the belt advances.
When the bearing weight on the conveying belt is too large, the phenomenon of slipping between the driving roller and the conveying belt due to overload can be caused, the slipping phenomenon enables the conveying belt to stop or decelerate, and meanwhile, the driving device for driving the driving roller to run is in a long-time overload running state, so that the service life of the driving device is influenced.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to overcome the existing defects, and provide a contact type rotation speed sensor to solve the defects that in the technical background, when the bearing weight on a conveyor belt is too large, a slipping phenomenon occurs between a driving roller and the conveyor belt due to overload, the slipping phenomenon stops or decelerates the conveyor belt, and meanwhile, a driving device driving the driving roller to operate is in a long-time overload running state, so that the service life of the driving device is influenced.
In order to achieve the purpose, the utility model provides the following technical scheme: a contact type rotation speed sensor comprises a main control unit arranged in a shell, a measuring unit connected with the main control unit and a protection unit;
the main control unit is used for receiving and processing the data sent by the measuring unit and sending an instruction to the protection unit;
the measuring unit is connected with a magnetic sensing element arranged in the shell and magnetic steel arranged on a driven roller of the belt conveyor, and the magnetic sensing element sends an induced pulse signal to the main control unit;
the protection unit is connected with the belt conveyor and the alarm, and controls the operation of the belt conveyor and the alarm to give an alarm by receiving the instruction sent by the main control unit.
Preferably, the main control unit is further connected with an adjusting unit, a display unit and a power supply unit which are arranged on the shell, the adjusting unit is connected with four control buttons, and the four control buttons are used for inputting data of the belt conveyor; the display unit is connected with three nixie tubes and used for displaying data input by the control buttons; the power supply unit is connected with a 12V power supply.
Preferably, the magnetic sensing element comprises a magnetic induction body, an amplifying circuit and a shaping circuit which are sequentially connected with the supporting plate, the magnetic induction body induces pulse signals, the amplified signals pass through a comparison circuit, the shaping circuit shapes the output amplitude of the pulse signals to be 0-5V, the frequency of the pulse signals with the output amplitude of 0-5V is in direct proportion to the running speed of the rubber belt conveyor, the conveying speed of the rubber belt conveyor is obtained finally, and the conveying speed is sent to the measuring unit.
Preferably, the main control unit receives the conveying speed sent by the measuring unit, compares the conveying speed with the rated speed input by the adjusting unit to the rubber belt conveyor, and sends an instruction to the protection unit to control the rubber belt conveyor to immediately stop running and send an alarm by the alarm when the conveying speed is less than 50% of the rated speed or more than or equal to 110% of the rated speed; when the conveying speed is within 70-50% of the rated speed, sending a command to the protection unit to stop the operation of the adhesive tape machine within 10 seconds and controlling the alarm to give an alarm.
Preferably, the four control buttons are respectively a first control button, a second control button, a third control button and a fourth control button, and the first control button is used for setting the selection of the diameter of the roller of the rubber belt conveyor, the number of magnetic vessels and the rated speed; the second control button is used for determining the set content; the third control button is used for selecting a nixie tube for setting data display; the fourth control button is used for setting the numerical value displayed by the nixie tube, and the range of the displayed numerical value is 0-9.
Compared with the prior art, the utility model provides a contact type rotating speed sensor, which has the following beneficial effects:
according to the utility model, the magnetic steel and the magnetic sensing element which are connected through the measuring unit are convenient to measure the running speed of the belt conveyor when the belt conveyor works, the running speed of the belt conveyor is sent to the main control unit, whether the belt conveyor is in a low-speed slipping state or an overspeed state is judged by comparing the running speed with the rated speed of the belt conveyor, and an instruction is sent to the protection unit to control the belt conveyor to stop and the alarm to give an alarm, so that the low-speed slipping and overspeed protection of the belt conveyor is facilitated, and the condition that the driving device driving the driving roller to run is in a long-time overload running state, so that the service life of the driving device is influenced, is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:
fig. 1 is a schematic diagram of a simple structure of a contact type rotation speed sensor according to the present invention.
Fig. 2 is a schematic structural diagram of a flow chart of a contact type rotation speed sensor according to the present invention.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments are provided. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, a contact type rotation speed sensor includes a main control unit disposed in a housing, and a measurement unit and a protection unit connected to the main control unit, wherein the measurement unit is used for measuring the operation of a belt conveyor, and sending the measurement result to the main control unit, and the main control unit is used for comparing the operation speed with the rated speed of the belt conveyor, so as to send an instruction to the protection unit to control the operation of the belt conveyor and the operation of an alarm, thereby implementing low-speed slip and overspeed protection of the belt conveyor, and avoiding the occurrence of a situation that a driving device driving a driving roller to operate is in a long-time overload operation state, thereby affecting the service life of the driving device.
The main control unit is used for receiving and processing the data sent by the measuring unit and sending an instruction to the protection unit; the main control unit is also connected with an adjusting unit, a display unit and a power supply unit which are arranged on the shell, the adjusting unit is connected with four control buttons, and the four control buttons are used for inputting data of the rubber belt conveyor; the four control buttons are respectively a first control button, a second control button, a third control button and a fourth control button, and the first control button is used for setting the selection of the diameter of the roller, the number of magnetic vessels and the rated speed of the rubber belt conveyor; the second control button is used for determining the set content; the third control button is used for selecting a nixie tube for setting data display; the fourth control button is used for setting a numerical value displayed by the nixie tube, and the range of the displayed numerical value is 0-9; the display unit is connected with the three nixie tubes and used for displaying data input by the control buttons; the three nixie tubes can respectively display the speed value, the diameter of the roller and the number of the magnetic pots when being set, and dynamically display the speed value when in operation. The relevant data are set when the device is out of the field, wherein the diameter of the roller is set to be 0.5M, the number of magnetic jars is set to be 1, and the rated speed is set to be 3M/s. When a user uses the belt conveyor, the actual value of the belt conveyor may be different from the set value, for example, the diameter of the roller is 0.4M, the rated speed of the belt conveyor is 2.5M/s, the rated data of the belt conveyor needs to be input at this time, the power supply unit is applied with the DC12V power supply, and at this time (after being stabilized) the numerical code is displayed as: "000", pressing the first control button key, the number is displayed as: "050" means that the drum diameter is set to 0.5M at the time of shipment; if the diameter of the roller on which the sensor is mounted is 0.4M, the sensor is modified according to the following steps: that is, pressing the third control button to make the middle nixie tube display the tube of '5' flash, and pressing the fourth control button to make the middle nixie tube change into: 6 → 7 → 8 → 9 → 0 → 1 → 2 → 3 → 4, which is the number we want to set when "4" is displayed; pressing the second control button key, the nixie tube is displayed as _________, and the diameter of the roller of 0.4M is set; after the diameter of the roller is set and confirmed, the numerical code shows '001', which means that the originally set magnetic jar number is one magnetic jar, and the magnetic jar number is consistent with the actual installed magnetic jar number without changing, so that the second control button is pressed, and the display '_________' shows that the magnetic jar number is confirmed; after the magnetic jar number is confirmed, the number is displayed as '300', which means that the originally set rated value is 3M/second; the rated speed of the belt conveyer with the speed sensor mounted is 2.5M/s, so that the speed sensor needs to be reset, and the setting steps are as follows: pressing the K third control button flashes the display "3" bit first, and then pressing the K fourth card button changes to: 3 → 4 → 5 → 6 → 7 → 8 → 9 → 0 → 1 → 2, then pressing the third control button to make the middle position of the nixie tube flash, then pressing the fourth control button to make the middle position from 0 → 1 → 2 → 3 → 4 → 5, then the rated speed is changed to 2.5M/s. Then pressing a second control button to display the number of _________, and finishing all the changes and the settings; when the cover is opened, whether the wiring of the travel switch is loosened or not can be checked, and the travel switch needs to be replaced if necessary (the cover is not opened to check as much as possible).
The power supply unit is connected with a 12V power supply; the main control unit receives the conveying speed sent by the measuring unit, compares the conveying speed with the rated speed input by the adjusting unit to the rubber belt conveyor, and sends an instruction to the protection unit to control the rubber belt conveyor to immediately stop running and send an alarm by the alarm when the conveying speed is less than 50% of the rated speed or more than or equal to 110% of the rated speed; when the conveying speed is within 70-50% of the rated speed, sending a command to the protection unit to stop the operation of the adhesive tape machine within 10 seconds and controlling the alarm to give an alarm.
The measuring unit is connected with a magnetic sensing element arranged in the shell and magnetic steel arranged on a driven roller of the rubber belt conveyor, and the magnetic sensing element sends an induced pulse signal to the main control unit; the magnetic sensing element comprises a magnetic induction body, an amplifying circuit and a shaping circuit which are sequentially connected with each other on a supporting plate, pulse signals are induced through the magnetic induction body, the amplified signals pass through a comparison circuit, the pulse signals with the amplitude of 0-5V are output after being shaped by the shaping circuit, the frequency of the pulse signals with the amplitude of 0-5V is in direct proportion to the running speed of the rubber belt conveyor, the conveying speed of the rubber belt conveyor is obtained finally, and the conveying speed is sent to a measuring unit.
The protection unit is connected with the belt conveyor and the alarm, and controls the operation of the belt conveyor and the alarm to give an alarm by receiving the instruction sent by the main control unit.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. A contact type rotation speed sensor is characterized by comprising a main control unit arranged in a shell, a measuring unit connected with the main control unit and a protection unit;
the main control unit is used for receiving and processing the data sent by the measuring unit and sending an instruction to the protection unit;
the measuring unit is connected with a magnetic sensing element arranged in the shell and magnetic steel arranged on a driven roller of the belt conveyor, and the magnetic sensing element sends an induced pulse signal to the main control unit;
the protection unit is connected with the belt conveyor and the alarm, and controls the operation of the belt conveyor and the alarm to give an alarm by receiving the instruction sent by the main control unit.
2. A contact type rotational speed sensor according to claim 1, characterized in that: the main control unit is also connected with an adjusting unit, a display unit and a power supply unit which are arranged on the shell, the adjusting unit is connected with four control buttons, and the four control buttons are used for inputting data of the rubber belt conveyor; the display unit is connected with three nixie tubes and used for displaying data input by the control buttons; the power supply unit is connected with a 12V power supply.
3. A contact type rotational speed sensor according to claim 1, characterized in that: the magnetic sensing element comprises a magnetic induction body, an amplifying circuit and a shaping circuit which are sequentially connected with each other on a supporting plate, the magnetic induction body induces pulse signals, the amplified signals pass through a comparison circuit, the shaping circuit shapes the output amplitude of the pulse signals to be 0-5V, the frequency of the pulse signals with the output amplitude of 0-5V is in direct proportion to the running speed of the rubber belt conveyor, the conveying speed of the rubber belt conveyor is obtained at last, and the conveying speed is sent to a measuring unit.
4. A contact type rotation speed sensor according to claim 3, characterized in that: the main control unit receives the conveying speed sent by the measuring unit, compares the conveying speed with the rated speed input by the adjusting unit to the rubber belt conveyor, and sends an instruction to the protection unit to control the rubber belt conveyor to immediately stop running and send an alarm by the alarm when the conveying speed is less than 50% of the rated speed or more than or equal to 110% of the rated speed; when the conveying speed is within 70-50% of the rated speed, sending a command to the protection unit to stop the operation of the adhesive tape machine within 10 seconds and controlling the alarm to give an alarm.
5. A contact type rotation speed sensor according to claim 2, characterized in that: the four control buttons are respectively a first control button, a second control button, a third control button and a fourth control button, and the first control button is used for setting the selection of the diameter of the roller of the rubber belt conveyor, the number of magnetic vessels and the rated speed; the second control button is used for determining the set content; the third control button is used for selecting a nixie tube for setting data display; the fourth control button is used for setting the numerical value displayed by the nixie tube, and the range of the displayed numerical value is 0-9.
CN202121860316.XU 2021-08-10 2021-08-10 Contact type revolution speed transducer Active CN215665376U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121860316.XU CN215665376U (en) 2021-08-10 2021-08-10 Contact type revolution speed transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121860316.XU CN215665376U (en) 2021-08-10 2021-08-10 Contact type revolution speed transducer

Publications (1)

Publication Number Publication Date
CN215665376U true CN215665376U (en) 2022-01-28

Family

ID=79951192

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121860316.XU Active CN215665376U (en) 2021-08-10 2021-08-10 Contact type revolution speed transducer

Country Status (1)

Country Link
CN (1) CN215665376U (en)

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