Sensor replacement method and sensor fixing device

Abstract

The present disclosure provides a sensor replacement method and a sensor fixing device, which relate to the field of coking automation technology. The sensor replacement method includes installing a sensor bracket next to the coke pushing and coal charging stroke control system of the coke pushing and coal charging car; installing a new sensor on the sensor bracket after an original sensor of the coke pushing and coal charging car is worn out; unplugging the signal line of the original sensor, leaving a terminal free in the coke pushing and coal charging stroke control system; the signal line of the new sensor passes through the sensor bracket and is connected to the terminal; the remaining original sensors and the new sensor of the coke pushing and coal charging stroke control system work simultaneously. The sensor fixing device includes a sensor bracket installed next to the coke pushing and coal charging stroke control system. The present disclosure uses a sensor to replace the worn original sensor, and delays the signal sensed by the new sensor, which is convenient for sensor fixing and enables the new sensor to adapt to the coke pushing and coal charging stroke control system.

Description

Technical Field

[0001] The present disclosure relates to the field of coking automation, and in particular to a sensor replacement method and a sensor fixing device. Background Art

[0002] The coking system's coke pushing and coal loading car automation control consists of a set of PLCs plus multiple controllers and sensors. The controllers of the coke pushing and coal loading travel control system are manufactured by the equipment manufacturer and are non-standard parts. The sensors of the coke pushing and coal loading travel control system are built-in and cannot be replaced if damaged.

[0003] The built-in sensor's mounting mechanism was complex and difficult to install. Each replacement took one to two hours, and around 20 sets were required annually, severely impacting production. Furthermore, failures in the sensor mounting mechanism repeatedly resulted in equipment failures such as pusher rods falling into the furnace and becoming unretractable, and coal loading and pulling plates knocking over the coke-side furnace door. Each failure resulted in equipment and production losses exceeding 100,000 yuan.

[0004] In view of this, it is necessary to develop a sensor replacement method and a sensor fixing device to solve the above problems. Summary of the Invention

[0005] An embodiment of the present invention provides a sensor replacement method and a sensor fixing device, which uses a new sensor to replace a worn original sensor and performs delay processing on the signal sensed by the new sensor, which facilitates sensor fixing and enables the new sensor to adapt to the coke pushing and coal loading stroke control system.

[0006] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0007] In one aspect, a sensor replacement method is provided, comprising:

[0008] Install a sensor bracket beside the coke pushing and coal charging stroke control system of the coke pushing and coal charging car;

[0009] After an original sensor of the coke-pushing and coal-charging car is worn out, a new sensor is installed on the sensor bracket;

[0010] Unplug the signal line of the original sensor, and a terminal block will be free for the coke pushing and coal charging stroke control system;

[0011] The signal line of the new sensor passes through the sensor bracket and is connected to the wiring terminal;

[0012] The remaining original sensors and new sensors of the coke pushing and coal charging stroke control system work simultaneously.

[0013] Based on one aspect, in a possible implementation, the remaining original sensors and the new sensors of the coke pushing and coal charging stroke control system operate simultaneously, including:

[0014] The coke pushing and coal charging travel control system of the coke pushing and coal charging car is equipped with a first original sensor and a second original sensor;

[0015] After the first original sensor is worn out, install a new sensor next to it;

[0016] The new sensor and the second original sensor work simultaneously;

[0017] The stop time of the coke pushing and coal charging stroke control system is delayed by n seconds.

[0018] Based on one aspect, in a possible implementation, the stopping time of the coke pushing and coal charging stroke control system is delayed by n seconds, including:

[0019] Several sensing parts for sensing by the first original sensor, the second original sensor and the new sensor make circular motion;

[0020] After the first original sensor is worn out, the new sensor takes over the work of the first original sensor;

[0021] When the sensing element moves to the new sensor position, the delay timing is started, and the delay timing is stopped when the sensing element moves to the first original sensor position. The time difference between starting the delay timing and stopping the delay timing is x seconds;

[0022] When each induction element moves to a new sensor position, a delay timing is started. The delay timing time difference of each induction element is the same. The cumulative delay timing time n=the product of x and the number of induction elements.

[0023] Based on one aspect, in a possible implementation, when a first sensing unit of the new sensor senses a sensing element, a second sensing unit of the new sensor senses a next sensing element;

[0024] The sensing element corresponding to the first sensing unit starts the delay timing, and the sensing element corresponding to the second sensing unit also starts the delay timing at the same time;

[0025] The delay timing corresponding to the first sensor unit overlaps with the delay timing corresponding to the second sensor unit.

[0026] Based on one aspect, in a possible implementation, the sensor bracket is installed beside the coke pushing and coal charging travel control system of the coke pushing and coal charging car, including:

[0027] Processing and manufacturing sensor brackets;

[0028] The sensor bracket is provided with a first fixing hole and a second fixing hole, the apertures of the first fixing hole and the second fixing hole are both 32 mm, and the center distance between the first fixing hole and the second fixing hole is 90 mm;

[0029] The first sensing unit of the new sensor is installed in the first fixing hole, and the second sensing unit of the new sensor is installed in the second fixing hole.

[0030] On the other hand, a sensor fixing device is provided. Based on the above-mentioned sensor replacement method, the sensor fixing device includes a sensor bracket installed beside the coke pushing and coal charging stroke control system;

[0031] The sensor bracket includes a bracket body, a first mounting hole and a second mounting hole;

[0032] The first mounting hole and the second mounting hole are opened on the bracket body along the height direction.

[0033] The distance between the first mounting hole and the second mounting hole is the same as the distance between two adjacent sensing elements.

[0034] Based on another aspect, in a possible implementation, both the first mounting hole and the second mounting hole are threaded holes;

[0035] External threads are provided on the circumferential outer surfaces of the first sensing unit and the second sensing unit of the new sensor. The first sensor is threadedly connected to the first mounting hole, and the second sensor is threadedly connected to the second mounting hole.

[0036] Based on another aspect, in a possible implementation, the sensor bracket further includes an anti-slip washer, and the anti-slip washer is installed at the end of the new sensor that contacts the sensor bracket.

[0037] Based on another aspect, in a possible implementation, the sensor bracket further includes a support plate, which is installed on the same working plane as the bracket body, and the support plate is connected to the bracket body and forms an angle of 60° with the bracket body.

[0038] The present disclosure has at least the following technical effects or advantages:

[0039] The embodiment of the present invention replaces the worn original sensor with a new sensor and performs delay processing on the signal sensed by the new sensor, which not only facilitates the fixation of the sensor but also enables the new sensor to adapt to the coke pushing and coal charging stroke control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 The present invention is a flow chart of a sensor replacement method according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0042] The present disclosure is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present disclosure, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present disclosure.

[0043] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0044] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0045] The terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0046] See also Figure 1 An embodiment of the present disclosure provides a sensor replacement method, comprising: installing a sensor bracket next to a coke pushing and charging stroke control system of a coke pushing and charging car; installing a new sensor on the sensor bracket after an original sensor of the coke pushing and charging car is worn out; unplugging a signal line of the original sensor, leaving a wiring terminal in the coke pushing and charging stroke control system; connecting the signal line of the new sensor through the sensor bracket and the wiring terminal; and operating the remaining original sensors and the new sensor of the coke pushing and charging stroke control system simultaneously.

[0047] The sensor bracket described above was constructed through measurement and calculation, using a 6mm x 60mm angle steel with a length of 545mm. When fabricating the sensor mounting bracket, the two sensor fixing holes on the bracket had a diameter of 32mm and a spacing of 90mm. This prevented production safety accidents caused by vibration, displacement of the built-in sensors, and other factors that could cause device failure in the original device. Since the new sensor in this embodiment has a diameter of 30mm, the fixing holes in this embodiment have a diameter of 32mm to facilitate installation in the sensor bracket.

[0048] The new sensor of the disclosed embodiment is preferably a 30mm electromagnetic proximity switch, which is sturdy, heat-resistant, and highly sensitive. In the disclosed embodiment of the coke pushing and coal loading stroke control system, when pushing or loading coke, the motor rotates and drives the coupling to rotate. The sensing parts around the coupling perform circular motion with the coupling, and the sensing parts sense the new sensor and the second sensor respectively. The new sensor and the second sensor can not only identify the direction of rotation based on the order of sensing, but also convert the pulse signal of the new sensor or the second sensor corresponding to the sensing part into the distance of the coke pushing and coal loading car through the delay time of the new sensor.

[0049] The remaining original sensors and new sensors of the above-mentioned coke pushing and coal charging stroke control system of the embodiment of the present disclosure work simultaneously, including: the coke pushing and coal charging stroke control system of the coke pushing and coal charging car is configured with a first original sensor and a second original sensor; after the first original sensor is worn, a new sensor is installed next to it; the new sensor and the second original sensor work simultaneously; the stop time of the coke pushing and coal charging stroke control system is delayed by n seconds.

[0050] The coke pushing and charging control system includes the coke pushing car door retrieval system, the coke pushing car pushing system, and the coke charging car loading system. The coke pushing car door retrieval system incorporates electrical components, hydraulics, and a programmable logic controller (PLC). Key limit switches include the door opening mechanism rear limit, door hook identification, and door opening fast and slow speed limits. The door retrieval system's primary interlock is non-travel. The coke charging car pushing system is an electrical control system. Interlocks with other mechanisms include non-travel, door retrieval rear limit, and door hook identification. Limit switches on the coke charging car pushing system include the following: front limit, rear limit, front deceleration point, rear deceleration point, front limit, and rear limit, as indicated by the master command. The eddy current brake is activated during forward and reverse shifts, forward deceleration, and rear deceleration. During coke pushing (charging), the eddy current brake regulates speed throughout the entire pushing process, ensuring impact-free pushing (charging). To prevent sudden power outages or electrical failures from damaging the pushing rods while they are in the furnace, a manual override is provided on the planetary reducer. During normal operation, the manual device is disengaged from the main shaft. In the event of a fault, the bevel gears engage to pull the pusher lever out of the furnace. Braking of the pusher lever is accomplished by an eddy current brake and a hydraulic pusher brake. The coke-charging pusher system's limits include: front deceleration point, front limit, middle limit deceleration point, middle limit, rear limit deceleration point, and rear limit. The forward linkages for the coal-pulling platform include: front baffle open, rear baffle open limit for coal loading, front limit, no travel, door rear limit, and coal-charging motor overheating. The coke-charging pusher's auxiliary systems include: a hydraulic station, an air compressor, and a scraper.

[0051] The stop time of the above-mentioned pushing and coal loading stroke control system of the embodiment of the present disclosure is delayed by n seconds, including: a number of sensing parts for sensing by the first original sensor, the second original sensor and the new sensor make circular motion; after the first original sensor is worn, the new sensor takes over the work of the first original sensor; when the sensing part moves to the new sensor position, the delay timing is started, and the delay timing is stopped until the sensing part moves to the first original sensor position, and the time difference between starting the delay timing and stopping the delay timing is x seconds; each sensing part starts the delay timing when it moves to the new sensor position, and the delay timing time difference of each sensing part is the same, and the cumulative duration of the delay timing n=x multiplied by the number of sensing parts.

[0052] In the embodiment of the present disclosure, when the first sensing unit of the new sensor senses a sensing element, the second sensing unit of the new sensor senses the next sensing element; the sensing element corresponding to the first sensing unit starts the delay timing, and the sensing element corresponding to the second sensing unit also starts the delay timing at the same time; the delay timing corresponding to the first sensing unit overlaps with the delay timing corresponding to the second sensing unit. Since the second sensing unit also senses the sensing element when the first sensing unit senses the sensing element, the second sensing unit also starts the delay timing when the first sensing unit starts the delay timing. If the delay timing of the first sensing unit and the delay timing of the second sensing unit are accumulated, the length distance will be doubled. In order to accurately measure the length distance, the embodiment of the present disclosure only counts the delay timing of the first sensing unit or the delay timing of the second sensing unit. The preferred embodiment uses the delay timing of the second sensing unit to check the delay timing of the first sensing unit, so that it can determine in real time whether the delay timing of the first sensing unit is accurate.

[0053] In the embodiment disclosed herein, the sensor bracket is installed next to the coke pushing and coal charging stroke control system of the coke pushing and coal charging car, including: processing and manufacturing the sensor bracket; opening a first fixing hole and a second fixing hole on the sensor bracket, the apertures of the first fixing hole and the second fixing hole are both 32 mm, and the center distance between the first fixing hole and the second fixing hole is 90 mm; the first sensing unit of the new sensor is installed in the first fixing hole, and the second sensing unit of the new sensor is installed in the second fixing hole.

[0054] The coke pushing and coal charging stroke control system of the disclosed embodiment includes a sensor bracket, a sensor, a sensing bolt, a reducer, a coupling, and a motor. The motor output shaft and the reducer input shaft are connected via a coupling. Multiple sensing bolts are evenly spaced along the circumference of the coupling. The sensor bracket is mounted on one side of the coupling, and two sensors are mounted on the sensor bracket along the height direction, with the distance between the sensors and the sensing bolts no greater than 4 mm. The sensor bracket includes a bracket body, a first mounting hole, and a second mounting hole. The first and second mounting holes are threaded holes, each of which is defined along the height direction of the bracket body. The sensors are threaded on the circumferential outer surface, and the sensors engage with the threaded holes. The distance between the first and second mounting holes is the same as the distance between adjacent sensing bolts. The sensor bracket also includes an anti-slip washer mounted on the end of the sensor that contacts the sensor bracket. The sensor bracket also includes a support plate, which is mounted on the same working plane as the bracket body and is connected to the bracket body at a 60° angle. The sensor uses a 30 mm electromagnetic proximity switch. There are ten induction bolts, and the distance between two adjacent induction bolts is 100 mm. The diameters of the first mounting hole and the second mounting hole are both 32 mm to 34 mm, and the hole spacing between the first mounting hole and the second mounting hole is 88 mm to 92 mm.

[0055] The coke pushing and coal loading stroke control system of the embodiment of the present disclosure includes: determining the length of the sensing bolt through calculation and measurement; placing the sensor at a position no more than 4 mm away from the sensing bolt; starting the motor and the reducer, and rotating the coupling to drive the sensing bolt to perform circular motion; and sensing the order in which the sensing bolts pass through respectively through two sensors. After sensing the order in which the sensing bolts pass through respectively through the two sensors, it also includes: the sensor transmits the sensed rotation signal of the motor to the control system, and the control system converts the rotation signal into a position signal of the coke pushing rod. The coke pushing and coal loading stroke control system of the embodiment of the present disclosure also includes a display module, which is electrically connected to the control system, and the display module can display the position and operating status of the coke pushing rod in the coke oven furnace.

[0056] The embodiment of the present disclosure replaces the worn original sensor with a new sensor and performs delay processing on the signal sensed by the new sensor, which not only facilitates the fixation of the sensor but also enables the new sensor to adapt to the coke pushing and coal loading stroke control system.

[0057] An embodiment of the present disclosure also provides a sensor fixing device. Based on the above-mentioned sensor replacement method, the sensor fixing device includes a sensor bracket installed next to the coke pushing and coal loading stroke control system; the sensor bracket includes a bracket body, a first mounting hole and a second mounting hole; the first mounting hole and the second mounting hole are opened on the bracket body along the height direction, and the distance between the first mounting hole and the second mounting hole is the same as the distance between two adjacent sensing parts.

[0058] In the embodiment of the present disclosure, the first mounting hole and the second mounting hole are both threaded holes; the circumferential outer surfaces of the first sensing unit and the second sensing unit of the new sensor are provided with external threads, the first sensor is threadedly connected to the first mounting hole, and the second sensor is threadedly connected to the second mounting hole.

[0059] In an embodiment of the present disclosure, the sensor bracket further includes an anti-slip washer, which is installed at the end portion of the new sensor that contacts the sensor bracket.

[0060] In the embodiment of the present disclosure, the sensor bracket further includes a support plate, which is installed on the same working plane as the bracket body. The support plate is connected to the bracket body and forms an angle of 60° with the bracket body.

[0061] The embodiment of the present disclosure connects the input shaft of the reducer and the output shaft of the motor through a coupling, and sets a sensing bolt on the circumference of the coupling, and sets the sensor bracket next to the coupling so that the distance between the sensor and the sensing bolt is kept within the range that the sensor can sense. When the system pushes coke or loads coal, the motor rotates to drive the coupling to rotate, and the sensing bolt performs a circular motion. The forward and reverse rotation of the motor is judged according to the relative position of the sensing bolt between the two sensors, and the rotation signal of the motor is converted into a coke pushing position signal, accurately displaying the precise position and operating status of the coke pushing rod in the coke oven furnace. By adopting the coke pushing and coal loading car travel control sensing system and sensing method disclosed in the present disclosure, the problems of difficult installation of sensors in the coke pushing and coal loading car travel control system in the prior art, time-consuming and labor-intensive maintenance and replacement, and the easy damage and failure of sensors during use are effectively solved, thereby achieving rapid replacement of sensors and greatly improving the measurement accuracy of sensors.

[0062] The input shaft of the reducer and the output shaft of the motor are connected through a coupling, and a sensing bolt is set on the circumference of the coupling, and the sensor bracket is set next to the coupling so that the distance between the sensor and the sensing bolt is kept within the range that the sensor can sense. When the system pushes coke or loads coal, the motor rotates to drive the coupling to rotate, and the sensing bolt moves in a circular motion. The forward and reverse rotation of the motor is judged according to the relative position of the sensing bolt between the two sensors, and the rotation signal of the motor is converted into a coke pushing position signal, accurately displaying the precise position and operating status (i.e., extending or retracting) of the coke pushing rod in the coke oven furnace. By adopting the coke pushing and coal charging car stroke control sensing system disclosed in the present invention, the problems of difficult installation of sensors in the coke pushing and coal charging car stroke control system in the prior art, time-consuming and labor-intensive maintenance and replacement, and the easy damage and failure of sensors during use are effectively solved, thereby realizing rapid replacement of sensors and greatly improving the measurement accuracy of sensors.

[0063] In actual application, the sensing bolts on the coupling connected to the reducer are lengthened. After calculation and actual measurement, the direction of rotation is identified according to the order in which the lengthened sensing bolts are sensed between the two sensors. The sensor is connected to the controller through a signal line, and then a pulse signal is output to the controller through the signal line. The controller converts the pulse signal into length and distance information for display, and transmits the result to the PLC system for process control.

[0064] In this embodiment, according to the specifications of the coupling, ten sensing bolts are used to fix the coupling in the circumferential direction, and the number of the sensing bolts is associated with the program. Specifically, when the sensing bolt rotates one circle, the sensor will sense ten times, and the direction of rotation (i.e. forward or reverse) is determined by the order in which the two sensors sense.

[0065] Before the sensor bracket of this embodiment was proposed, the original sensor bracket had a complex structure, consisting of two chains and four gears for position transmission. The sensor was built into the bracket. When the chain loosened, the gears wore, or the sensor position changed due to vibration, the detection data would be inaccurate. The PLC control system would output an erroneous command after receiving the erroneous data, making it easy for the coke pusher to fall into the furnace and the coal drag plate to knock down the coke side furnace door, causing a major safety accident. After the sensor bracket of this embodiment was proposed, the sensor was fixed to the sensor bracket. When the coupling rotated, the sensing bolt installed on the coupling rotated accordingly. The sensor sensed the order in which the same bolt passed through the two sensors to determine the rotation direction. The sensor bracket was firmly mounted on the working plane. Once the position distance of the sensor was fixed, it did not need to be adjusted, which greatly improved the distance measurement accuracy and reliability. Moreover, in actual application, it did not fail, and maintenance and replacement were convenient and time-saving. It can also be replaced online without affecting production. In addition, after being put into use, the sensor bracket disclosed in this invention effectively reduced the unsafe accidents caused by sensor bracket failure and saved more than 2 million yuan in production costs.

[0066] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present disclosure. They are not intended to limit the scope of protection of the present disclosure. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present disclosure should be included in the scope of protection of the present disclosure.

[0067] It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the exemplary embodiments described above and that the present disclosure can be implemented in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present disclosure is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present disclosure. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0068] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sensor replacement method, characterized in that: include: Install a sensor bracket beside the coke pushing and coal charging stroke control system of the coke pushing and coal charging car; After an original sensor of the coke-pushing and coal-charging car is worn out, a new sensor is installed on the sensor bracket; Unplug the signal line of the original sensor, and a terminal block will be free for the coke pushing and coal charging stroke control system; The signal line of the new sensor passes through the sensor bracket and is connected to the wiring terminal; The remaining original sensors and new sensors of the coke pushing and coal charging stroke control system work simultaneously; The remaining original sensors and new sensors of the coke pushing and coal charging stroke control system work simultaneously, including: The coke pushing and coal charging travel control system of the coke pushing and coal charging car is equipped with a first original sensor and a second original sensor; After the first original sensor is worn out, install a new sensor next to it; The new sensor and the second original sensor work simultaneously; The stop time of the coke pushing and coal charging control system is delayed by n seconds; The stopping time of the coke pushing and coal charging stroke control system is delayed by n seconds, including: Several sensing parts for sensing by the first original sensor, the second original sensor and the new sensor make circular motion; After the first original sensor is worn out, the new sensor takes over the work of the first original sensor; When the sensing element moves to the new sensor position, the delay timing is started, and the delay timing is stopped when the sensing element moves to the first original sensor position. The time difference between starting the delay timing and stopping the delay timing is x seconds; When each sensing element moves to a new sensor position, a delay timing is started. The delay timing time difference of each sensing element is the same. The cumulative delay timing time n=the product of x and the number of sensing elements.

2. The sensor replacement method according to claim 1, characterized in that: When the first sensing unit of the new sensor senses a sensing element, the second sensing unit of the new sensor senses the next sensing element; The sensing element corresponding to the first sensing unit starts the delay timing, and the sensing element corresponding to the second sensing unit also starts the delay timing at the same time; The delay timing corresponding to the first sensor unit overlaps with the delay timing corresponding to the second sensor unit.

3. The sensor replacement method according to claim 1, characterized in that: The sensor bracket is installed beside the coke pushing and coal charging travel control system of the coke pushing and coal charging car, including: Processing and manufacturing sensor brackets; The sensor bracket is provided with a first fixing hole and a second fixing hole, the apertures of the first fixing hole and the second fixing hole are both 32 mm, and the center distance between the first fixing hole and the second fixing hole is 90 mm; The first sensing unit of the new sensor is installed in the first fixing hole, and the second sensing unit of the new sensor is installed in the second fixing hole.

4. A sensor fixing device, characterized in that: Based on the sensor replacement method according to any one of claims 1 to 3, the sensor fixing device comprises: a sensor bracket installed beside the coke pushing and coal charging stroke control system; The sensor bracket includes a bracket body, a first mounting hole and a second mounting hole; The first mounting hole and the second mounting hole are opened on the bracket body along the height direction, and the first mounting hole and the second mounting hole are both threaded holes; The distance between the first mounting hole and the second mounting hole is the same as the distance between two adjacent sensing elements.

5. The sensor fixing device according to claim 4, characterized in that: The first mounting hole and the second mounting hole are both threaded holes; External threads are provided on the circumferential outer surfaces of the first sensing unit and the second sensing unit of the new sensor. The first sensor is threadedly connected to the first mounting hole, and the second sensor is threadedly connected to the second mounting hole.

6. The sensor fixing device according to claim 4, characterized in that: The sensor bracket further includes an anti-skid washer mounted on the end portion of the new sensor in contact with the sensor bracket.

7. The sensor fixing device according to claim 4, characterized in that: The sensor bracket further includes a support plate, which is installed on the same working plane as the bracket body. The support plate is connected to the bracket body and forms an angle of 60° with the bracket body.

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