A device for accurately measuring the force of pushing a coke and a method of using the same

Abstract

The present application relates to a kind of device and method for accurately measuring pushing force, comprising: a gear coupling, for connecting pushing driving motor and pushing transmission gear;Pushing transmission gear;Pushing transmission rack;Gear bearing seat;First pressure sensing module, sandwiched between the front support and the gear bearing seat, for collecting the force of pushing rod forward direction;Second pressure sensing module, sandwiched between the rear support and the gear bearing seat, for collecting the force of pushing rod backward direction;Upper slide support and lower slide support, respectively arranged above and below the gear bearing seat, for restricting the gear bearing seat only along the sliding direction of pushing rod movement;Data processing module, signal connection with the first pressure sensing module and second pressure sensing module, for receiving and processing pressure signal, generating pushing force data;Man-machine interaction unit;Execution control unit;The present application can realize the direct measurement of pushing force.

Description

Technical Field

[0001] This invention relates to the field of coke oven machinery technology in the coking industry, and more particularly to a device for accurately measuring coke pushing force and its method of use. Background Technology

[0002] The coking industry is not only the foundation of the steel industry but also a crucial support for the energy and chemical industries. The coke produced by coke oven machinery has a significant impact on basic industries and the national economy. To ensure normal coke oven production, a complete set of ultra-large equipment is installed, mainly including: SCP machines or coal charging cars, coke pushers, coke quenchers, and coke extinguishing cars. Among these, the SCP machine or coke pusher is the core equipment in coke oven production. Operating on the machine side of the coke oven, the SCP machine or coke pusher is primarily used to push out mature coke from the carbonization chamber and to open and close the oven doors before and after pushing, as well as to perform mechanized cleaning of the oven doors and door frames. The coke pushing device is the most critical mechanism within the SCP machine or coke pusher.

[0003] Excessive pushing force during coke pushing not only affects normal coke oven production but also shortens the service life of the pushing equipment, potentially leading to serious consequences such as coke cake collapse, oven damage, and equipment failure, resulting in significant economic losses. Therefore, real-time monitoring and precise control of the pushing force during the coke pushing process are crucial technical aspects for ensuring safe coke oven production and extending equipment lifespan.

[0004] Currently, the measurement of coke pushing force mainly employs indirect calculation methods. This involves collecting the current of the coke pushing motor via a coke pushing frequency converter and then indirectly estimating the pushing force based on the current value. Chinese patent CN102838998A discloses a 40kg side-opening experimental coke oven pusher, which uses a pressure sensor on the pushing rod. The pushing resistance is transmitted to the pressure sensor via a pushing resistance guide rod to obtain experimental data on the pushing resistance. However, this solution is only suitable for small-scale testing scenarios in experimental coke ovens. Its pressure sensor is installed inside the pushing rod, requiring modification of the pushing rod structure. On large industrial coke pushers, it faces difficulties in structural modification and insufficient sensor protection levels, making it unsuitable for direct application in industrial production scenarios.

[0005] Chinese patent CN111121871A discloses a fault diagnosis system for coking equipment. This system uses a coking encoder to detect the stroke information of the coking rod, a distance sensor to detect the deflection value of the coking rod, a vibration sensor to detect vibration information, and a coking frequency converter to collect the current information of the coking motor. Fault diagnosis and analysis are then performed by a PLC and a fault diagnosis server. However, this solution still relies on the current information collected by the coking frequency converter for fault judgment, and is essentially still an indirect measurement method, unable to directly obtain the precise value of the coking force.

[0006] In summary, traditional methods of indirectly estimating coke pushing force through coke pushing current are susceptible to interference from various factors such as motor aging, frequency converter parameter fluctuations, transmission clearance changes, and load fluctuations, resulting in large calculation errors and severe data distortion. Existing technical solutions do not achieve direct and continuous acquisition of the mechanical force of coke pushing, making it impossible to obtain the true force data during the coke pushing process. Existing solutions can only perform post-event fault diagnosis and cannot provide real-time early warning and automatic interlock shutdown when coke pushing force is abnormal, making it difficult to prevent safety accidents caused by overload coke pushing from the source. Furthermore, the lack of automatic storage and traceability capabilities for full-cycle coke pushing force data makes it impossible to provide an accurate data foundation for coal blending process optimization and equipment fatigue life prediction.

[0007] In summary, how to directly measure the coking force without modifying the original mechanical structure, occupying additional housing space, or affecting the gear and rack meshing accuracy has been a long-standing but unsolved technical challenge in this field. With the accelerated intelligent upgrading of the coking industry, there is an urgent need for a complete set of measurement and control devices and methods capable of directly, continuously, with high precision, and in real-time stable acquisition of the coking force. Summary of the Invention

[0008] In response to the aforementioned technical problems, a device for accurately measuring the focusing force and a method for using the same are provided.

[0009] The technical means employed in this invention are as follows: A device for accurately measuring the focusing force, used in a focus pusher or SCP machine, comprising: A drum-shaped gear coupling is used to connect the coke pusher drive motor and the coke pusher transmission gear; The coke pusher transmission gear meshes with the coke pusher transmission rack, driving the coke pusher transmission rack to move forward or backward. The coke pusher drive rack is fixedly connected to the coke pusher rod, and drives the coke pusher rod to move under the drive of the coke pusher drive gear; A gear bearing housing is used to install the coke pusher transmission gear. The left side of the gear bearing housing is fixed by a front support, and the right side is fixed by a rear support. The first pressure sensing module is sandwiched between the front support and the gear bearing seat and is used to collect the force in the forward direction of the push rod. The second pressure sensing module is sandwiched between the rear support and the gear bearing seat and is used to collect the force in the backward direction of the push rod. The upper slide rail support and the lower slide rail support are respectively located above and below the gear bearing housing to constrain the gear bearing housing to slide only along the direction of the push rod movement; The data processing module is connected to the first pressure sensing module and the second pressure sensing module by signal, and is used to receive and process pressure signals to generate push-coke force data; The human-machine interaction unit is connected to the data processing module and is used to display the focusing force data and alarm information; An execution control unit, connected to the data processing module, is used to execute interlocked shutdown control based on the coking force data; When the coke pusher is subjected to force in the forward or backward direction, the gear bearing housing moves along the upper slide rail support and the lower slide rail support. When the first pressure sensing module and the second pressure sensing module are squeezed by the gear bearing housing, they generate an electrical signal corresponding to the applied force, thereby realizing the direct measurement of the coke pusher force.

[0010] Furthermore, both the first pressure sensing module and the second pressure sensing module include a pressure sensor and a temperature sensor. The temperature sensor is used to collect the ambient temperature at the site, and the data processing module performs temperature compensation on the pressure sensor measurement value based on the temperature data collected by the temperature sensor.

[0011] Furthermore, the gear bearing housing is connected to the front support and the gear bearing housing is connected to the rear support by bolt groups. The first pressure sensing module and the second pressure sensing module are ring-shaped structures, which are fitted onto the bolt groups and fixed in a sandwich manner between the corresponding supports and the gear bearing housing.

[0012] Furthermore, the data processing module has a built-in automatic zero-point calibration program, which is used to automatically eliminate zero-point drift caused by equipment installation, self-weight, and assembly gaps when the equipment is powered on and unloaded.

[0013] Furthermore, the data processing module has a built-in three-level threshold storage unit and a real-time computing unit. The three-level thresholds include a warning threshold and a shutdown threshold. The real-time computing unit compares the measured focusing force with the preset threshold in real time and outputs corresponding control commands.

[0014] Furthermore, when the measured focusing force is lower than the warning threshold, the data processing module only saves the data; when the measured focusing force is between the warning threshold and the shutdown threshold, the data processing module sends a warning command to the human-machine interaction unit; when the measured focusing force reaches or exceeds the shutdown threshold, the data processing module sends an interlock shutdown command to the execution control unit.

[0015] Furthermore, the human-machine interaction unit includes a display screen and an audible and visual alarm, which are used to display the instantaneous coking force, the current furnace number and the equipment operating status in real time, and to execute an intermittent audible and visual alarm when a warning command is received, and to execute a continuous high-intensity audible and visual alarm and display the fault code in a pop-up window when a shutdown command is received.

[0016] Furthermore, the execution control unit is connected to the main control PLC of the SCP machine or the coke pusher. After receiving the interlock shutdown command from the data processing module, it cuts off the coke pusher power circuit and locks the coke pusher mechanism, so that the coke pusher action cannot be started before manual fault reset.

[0017] Furthermore, it also includes a remote data transmission module, which is connected to the data processing module and uses industrial Ethernet or 4G / 5G communication to remotely upload equipment operation data and overload fault records to the coking plant's central control platform.

[0018] On the other hand, the present invention also discloses a method for accurately measuring the focusing force based on the above-mentioned device, comprising the following steps: S1: The equipment performs a self-test upon power-on. Under no-load conditions, the system automatically performs zero-point calibration to eliminate zero-point drift caused by equipment installation, weight, and assembly gaps. S2: Combining coke oven specifications and coal blending process parameters, input the two-level coke pushing force safety thresholds, namely the early warning threshold and the shutdown threshold, into the human-machine interaction unit; S3: Throughout the entire coking operation, the first pressure sensing module and the second pressure sensing module continuously collect load data in the forward and backward directions of the coking rod. After signal conditioning, the data is sent to the data processing module for real-time logic judgment. S4: When the measured focusing force is lower than the warning threshold, only the data is saved; when the measured focusing force is between the warning threshold and the shutdown threshold, the human-machine interaction unit executes an intermittent audible and visual alarm; when the measured focusing force reaches or exceeds the shutdown threshold, the human-machine interaction unit executes a continuous audible and visual alarm, and at the same time executes the control unit to interlock and shut down the focusing mechanism. S5: All operational data is automatically stored locally and synchronously uploaded to the plant's central control platform via a remote data transmission module; S6: After the production cycle ends, retrieve historical load data to optimize coal blending schemes and equipment maintenance plans.

[0019] Further, in step S3, the first pressure sensing module and the second pressure sensing module respectively collect the focusing force data in the forward and backward directions of the focusing rod, and the data processing module compares the measured values ​​in the two directions with the preset threshold values ​​in the corresponding directions.

[0020] Furthermore, in step S1, the automatic zero-point calibration is performed by the automatic zero-point calibration program built into the data processing module, which records the initial readings of each pressure sensing module under no-load conditions and automatically subtracts the initial value in subsequent measurements.

[0021] Compared with the prior art, the present invention has the following advantages: 1. This invention sandwiches two pressure sensing modules between the front support and the gear bearing housing, and between the rear support and the gear bearing housing, respectively. When the coke pushing drive gear drives the coke pushing drive rack forward or backward, the gear bearing housing moves slightly along the upper and lower slide rail supports, directly pressing the corresponding pressure sensing module. The pressure sensing module converts the applied mechanical force into an electrical signal in real time, thereby achieving direct measurement of the coke pushing force. Compared to existing technologies that require installing pressure sensors inside the coke pushing rod and modifying the rod structure, this invention eliminates the need to disassemble the coke pushing drive housing, does not alter the original coke pushing main mechanical structure, has low modification costs, occupies little space, and is suitable for both new and in-service equipment upgrades. Compared to existing technologies that rely on the coke pushing frequency converter to collect current information, this invention achieves direct acquisition of mechanical force, significantly improving measurement accuracy and is unaffected by electrical system operating conditions.

[0022] 2. In existing technologies, the coking force is typically estimated indirectly by collecting the motor current through a coking frequency converter. However, the motor current is affected by various factors such as motor aging, frequency converter parameter fluctuations, transmission clearance changes, and load fluctuations, resulting in large calculation errors and severe data distortion. This invention directly collects the mechanical force of the coking force through a pressure sensing module, fundamentally eliminating the influence of electrical system interference factors on measurement accuracy and achieving true and accurate measurement of the coking force.

[0023] 3. This invention features two pressure sensing modules on each side of the gear bearing housing, enabling simultaneous acquisition of forces acting on the coke pusher in both forward and backward directions. This bidirectional measurement capability provides comprehensive data support for analyzing the force state of the coke pusher equipment. The pushing force in the forward direction reflects the resistance to coke cake ejection, while the retraction force in the backward direction reflects the return resistance of the transmission system. The combination of these two forces can be used to assess the operating status of the coke pusher and the health of the transmission system.

[0024] 4. This invention utilizes a three-level threshold storage unit and a real-time computing unit built into the data processing module to compare the measured coke pushing force with preset thresholds in real time. When the measured value is lower than the warning threshold, only the data is saved; when the measured value is between the warning threshold and the shutdown threshold, the human-machine interaction unit executes an intermittent audible and visual alarm; when the measured value reaches or exceeds the shutdown threshold, the execution control unit immediately cuts off the coke pushing power circuit and locks the coke pushing mechanism, preventing the coke pushing action from restarting before manual fault reset. This dual protection mechanism can prevent safety accidents such as coke cake collapse, furnace damage, and equipment damage caused by overload coke pushing from the source. Compared with existing technologies that can only perform post-event fault diagnosis, this represents a leap from passive response to active protection.

[0025] Furthermore, this invention uses a remote data transmission module to remotely upload equipment operating data and overload fault records to the coking plant's central control platform. All operational data is automatically stored locally and is traceable. After the production cycle ends, historical load data can be retrieved to optimize coal blending schemes and predict equipment fatigue wear, thereby achieving digital, intelligent, and lean production in the coking plant. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a top view of the present invention.

[0028] Figure 2 This is a side view of the present invention.

[0029] Figure 3 This is a schematic diagram showing the installation location of the pressure sensing module of the present invention.

[0030] In the diagram: 1. Drum-shaped gear coupling; 2. Coke pusher transmission gear; 3. Coke pusher transmission rack; 4. First pressure sensing module; 5. Upper slide rail support; 6. Second pressure sensing module; 7. Rear support; 8. Gear bearing housing; 9. Lower slide rail support; 10. Front support. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0038] like Figures 1-3 As shown, this invention discloses a device for accurately measuring the focusing force, applicable to a focus pusher or SCP machine, comprising: Drum-shaped gear coupling 1 is used to connect the coke pusher drive motor and the coke pusher transmission gear 2; The coke pusher transmission gear 2 meshes with the coke pusher transmission rack 3, driving the coke pusher transmission rack 3 to move forward or backward. The coke pusher transmission rack 3 is fixedly connected to the coke pusher rod, and drives the coke pusher rod to move under the drive of the coke pusher transmission gear 2; Gear bearing housing 8 is used to install the coke pusher transmission gear 2. The left side of the gear bearing housing 8 is fixed by the front support 10 and the right side is fixed by the rear support 7. The first pressure sensing module 4 is sandwiched between the front support 10 and the gear bearing seat 8 and is used to collect the force in the forward direction of the push rod. The second pressure sensing module 6 is sandwiched between the rear support 7 and the gear bearing seat 8 and is used to collect the force in the backward direction of the push rod. This invention achieves bidirectional force acquisition in both the forward and backward directions by symmetrically arranging pressure sensing modules on both sides of the gear bearing housing. The coke pushing force data in the forward direction is used for overload warning and shutdown protection, while the retraction force data in the backward direction is used to assess the return resistance and health status of the transmission system. The combination of bidirectional data can monitor the wear trends of the coke pushing rod and the transmission system, providing a basis for predictive maintenance.

[0039] The upper slide rail support 5 and the lower slide rail support 9 are respectively disposed above and below the gear bearing seat 8 to constrain the gear bearing seat 8 to slide only along the direction of the push rod movement; The data processing module is connected to the first pressure sensing module 4 and the second pressure sensing module 6 by signal, and is used to receive and process pressure signals to generate push-coke force data. The human-machine interaction unit is connected to the data processing module and is used to display the focusing force data and alarm information; An execution control unit, connected to the data processing module, is used to execute interlocked shutdown control based on the coking force data; When the coke pusher rod is subjected to force in the forward or backward direction, the gear bearing housing 8 undergoes slight movement along the upper slide rail support 5 and the lower slide rail support 9. The first pressure sensing module 4 and the second pressure sensing module 6 generate electrical signals corresponding to the applied force when compressed by the gear bearing housing 8, thus achieving direct measurement of the coke pusher force. This slight movement is determined by the compression deformation of the pressure sensing module under rated load, ensuring sufficient strain signals for sensor detection without affecting the meshing accuracy of the coke pusher transmission gear 2 and the coke pusher transmission rack 3. Sliding mating surfaces are provided between the upper slide rail support 5 and the lower slide rail support 9 and the gear bearing housing 8 to ensure smooth and unobstructed sliding.

[0040] This invention achieves direct acquisition of the coking mechanical force at the meshing position of the coking transmission gear 2 and the coking transmission rack 3 by sandwiching the first pressure sensing module 4 and the second pressure sensing module 6 between the gear bearing housing 8 and the front support 10 and the rear support 7, without disassembling the coking transmission housing or modifying the coking rod structure. The sandwiched installation structure of this invention fully utilizes the physical characteristic that the gear bearing housing 8 undergoes a slight displacement along the slide support when under force. By directly embedding the pressure sensing module as a link in the force transmission path between the gear bearing housing and the support, the coking mechanical force is acquired in real time during the transmission path, ensuring both directness and accuracy of the measurement, and achieving zero-modification adaptation to the original mechanical structure.

[0041] Furthermore, both the first pressure sensing module 4 and the second pressure sensing module 6 include a pressure sensor and a temperature sensor. The temperature sensor is used to collect the ambient temperature, and the data processing module performs temperature compensation on the pressure sensor measurement value based on the temperature data collected by the temperature sensor. Specifically, the pressure sensor uses a resistance strain gauge sensitive element, whose resistance value will drift with changes in ambient temperature. Without temperature compensation, measurement errors will occur. The data processing module has a built-in temperature compensation algorithm. Through calibration experiments, the output characteristic curves of the sensor under different ambient temperatures are obtained and fitted into a temperature-error compensation polynomial. In real-time measurement, the data processing module substitutes the real-time temperature collected by the temperature sensor into the compensation polynomial to calculate the compensation value and correct the pressure measurement value, enabling the present invention to maintain a high-precision measurement better than 0.5%FS within the coking plant.

[0042] Furthermore, the gear bearing housing 8 is connected to the front support 10 and the rear support 7 respectively via bolt groups. The first pressure sensing module 4 and the second pressure sensing module 6 are ring-shaped structures, fitted onto the bolt groups, and sandwiched between the corresponding supports and the gear bearing housing. The ring-shaped structure ensures that the pressure sensing modules are evenly stressed along the axial direction of the bolt groups, avoiding measurement errors caused by off-center loading. The installation method of fitting onto the bolt groups ensures that the sensing modules remain in the correct position under pressure and do not shift. At the same time, the ring-shaped structure allows the installation and replacement of the sensing modules without disassembling the main connection structure between the gear bearing housing and the front / rear supports; installation and removal can be completed simply by loosening the bolt groups, greatly reducing the difficulty of on-site installation and maintenance.

[0043] Furthermore, the data processing module incorporates an automatic zero-point calibration program to automatically eliminate zero-point drift caused by equipment installation, weight, and assembly gaps during no-load operation. Specifically, when the equipment is running under no-load conditions before the pusher rod contacts the coke cake, the automatic zero-point calibration program records the initial readings of the first pressure sensor module 4 and the second pressure sensor module 6 as the zero-point reference value, and automatically subtracts this reference value in subsequent measurements. The automatic zero-point calibration program is executed automatically once before the start of each work shift to ensure that zero-point drift caused by factors such as temperature changes and mechanical creep after long-term operation is corrected in a timely manner, thus always ensuring the accuracy of the measurement data.

[0044] Furthermore, the data processing module incorporates a three-level threshold storage unit and a real-time calculation unit. The three-level thresholds include a warning threshold and a shutdown threshold. The real-time calculation unit compares the measured coking force with the preset thresholds in real time and outputs corresponding control commands. The three-level thresholds are set as follows: the warning threshold is set to 80-85% of the rated coking force to alert operators that the coking force has abnormally increased but has not yet reached a dangerous level; the shutdown threshold is set to 110-120% of the rated coking force to trigger emergency shutdown protection. Users can adjust the two-level thresholds on the human-machine interface unit according to the coke oven specifications, coal blending process parameters, and other actual conditions.

[0045] Furthermore, when the measured focusing force is lower than the warning threshold, the data processing module only saves the data; when the measured focusing force is between the warning threshold and the shutdown threshold, the data processing module sends a warning command to the human-machine interaction unit; when the measured focusing force reaches or exceeds the shutdown threshold, the data processing module sends an interlock shutdown command to the execution control unit.

[0046] Furthermore, the human-machine interaction unit includes a display screen and an audible and visual alarm, which are used to display the instantaneous coking force, the current furnace number and the equipment operating status in real time, and to execute an intermittent audible and visual alarm when a warning command is received, and to execute a continuous high-intensity audible and visual alarm and display the fault code in a pop-up window when a shutdown command is received.

[0047] Furthermore, the execution control unit is communicatively connected to the main control PLC of the SCP machine or coke pusher. After receiving the interlock shutdown command from the data processing module, it cuts off the coke pusher power circuit and locks the coke pusher mechanism, preventing the coke pusher action from starting before manual fault reset. When the execution control unit receives the shutdown command, it instantly cuts off the main circuit power supply of the coke pusher motor. Simultaneously, it triggers the mechanical brake of the coke pusher mechanism to lock the coke pusher transmission gear 2 through the PLC program and sends a shutdown fault code to the main control PLC. After the fault is cleared, a manual fault reset operation must be performed on the human-machine interface unit before the coke pusher action can be restarted.

[0048] Furthermore, it also includes a remote data transmission module, which is connected to the data processing module and uses industrial Ethernet or 4G / 5G communication to remotely upload equipment operation data and overload fault records to the coking plant's central control platform.

[0049] On the other hand, the present invention also discloses a method for accurately measuring the focusing force based on the above-mentioned device, comprising the following steps: S1: The equipment performs a self-test upon power-on. Under no-load conditions, the system automatically performs zero-point calibration to eliminate zero-point drift caused by equipment installation, weight, and assembly gaps. Specifically, the automatic zero-point calibration is performed through the automatic zero-point calibration program built into the data processing module. It records the initial readings of each pressure sensor module under no-load conditions and automatically subtracts the initial value in subsequent measurements.

[0050] S2: Combining coke oven specifications and coal blending process parameters, input the two-level coke pushing force safety thresholds, namely the early warning threshold and the shutdown threshold, into the human-machine interaction unit; S3: Throughout the coke pushing operation, the first pressure sensing module 4 and the second pressure sensing module 6 continuously collect load data in the forward and backward directions of the coke pushing rod. After signal conditioning, the data is sent to the data processing module for real-time logical judgment. Specifically, the first pressure sensing module 4 and the second pressure sensing module 6 collect coke pushing force data in the forward and backward directions of the coke pushing rod, respectively. The data processing module compares the measured values ​​in the two directions with the preset thresholds for the corresponding directions. The coke pushing force in the forward direction reflects the resistance to pushing out the coke cake, and the retraction force in the backward direction reflects the return resistance of the transmission system. The combination of the two can be used to comprehensively evaluate the stress state of the coke pushing equipment and the health of the transmission system.

[0051] S4: When the measured focusing force is lower than the warning threshold, only the data is saved; when the measured focusing force is between the warning threshold and the shutdown threshold, the human-machine interaction unit executes an intermittent audible and visual alarm; when the measured focusing force reaches or exceeds the shutdown threshold, the human-machine interaction unit executes a continuous audible and visual alarm, and at the same time executes the control unit to interlock and shut down the focusing mechanism. S5: All operational data is automatically stored locally and synchronously uploaded to the plant's central control platform via a remote data transmission module; S6: After the production cycle ends, retrieve historical load data to optimize coal blending schemes and equipment maintenance plans.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for accurately measuring the pushing force of a focus press, applied to a focus press machine or SCP machine, characterized in that, include: A drum-shaped gear coupling (1) is used to connect the coke push drive motor and the coke push transmission gear (2). The coke pusher transmission gear (2) meshes with the coke pusher transmission rack (3) to drive the coke pusher transmission rack (3) forward or backward; The coke pusher transmission rack (3) is fixedly connected to the coke pusher rod, and drives the coke pusher rod to move under the drive of the coke pusher transmission gear (2); Gear bearing housing (8) is used to install the coke pusher transmission gear (2). The left side of the gear bearing housing (8) is fixed by the front support (10), and the right side is fixed by the rear support (7). The first pressure sensing module (4) is sandwiched between the front support (10) and the gear bearing seat (8) and is used to collect the force in the forward direction of the push rod; The second pressure sensing module (6) is sandwiched between the rear support (7) and the gear bearing seat (8) and is used to collect the force in the backward direction of the push rod; The upper slide rail support (5) and the lower slide rail support (9) are respectively located above and below the gear bearing seat (8) to constrain the gear bearing seat (8) to slide only along the direction of the push rod movement; The data processing module is connected to the first pressure sensing module (4) and the second pressure sensing module (6) by signal, and is used to receive and process pressure signals to generate push-coke force data; The human-machine interaction unit is connected to the data processing module and is used to display the focusing force data and alarm information; An execution control unit, connected to the data processing module, is used to execute interlocked shutdown control based on the coking force data; When the gear bearing seat (8) is subjected to force in the forward or backward direction of the coke pusher, it moves along the upper slide support (5) and the lower slide support (9). When the first pressure sensing module (4) and the second pressure sensing module (6) are squeezed by the gear bearing seat (8), they generate an electrical signal corresponding to the force applied, thereby realizing the direct measurement of the coke pusher force.

2. The device for accurately measuring the focusing force according to claim 1, characterized in that, The first pressure sensing module (4) and the second pressure sensing module (6) both include a pressure sensor and a temperature sensor. The temperature sensor is used to collect the ambient temperature. The data processing module performs temperature compensation on the pressure sensor measurement value based on the temperature data collected by the temperature sensor.

3. The device for accurately measuring the focusing force according to claim 1, characterized in that, The gear bearing housing (8) and the front support (10) are connected by bolt groups, and the gear bearing housing (8) and the rear support (7) are connected by bolt groups. The first pressure sensing module (4) and the second pressure sensing module (6) are ring-shaped structures, fitted on the bolt groups, and sandwiched between the corresponding support and the gear bearing housing.

4. The device for accurately measuring the focusing force according to claim 1, characterized in that, The data processing module has a built-in automatic zero-point calibration program, which is used to automatically eliminate zero-point drift caused by equipment installation, self-weight and assembly gaps when the equipment is powered on and unloaded.

5. The device for accurately measuring the focusing force according to claim 1, characterized in that, The data processing module has a built-in three-level threshold storage unit and a real-time computing unit. The three-level thresholds include a warning threshold and a shutdown threshold. The real-time computing unit compares the measured focusing force with the preset threshold in real time and outputs the corresponding control command.

6. The apparatus for accurately measuring the focusing force according to claim 5, characterized in that, When the measured focusing force is lower than the warning threshold, the data processing module only saves the data; when the measured focusing force is between the warning threshold and the shutdown threshold, the data processing module sends a warning command to the human-machine interaction unit; when the measured focusing force reaches or exceeds the shutdown threshold, the data processing module sends an interlock shutdown command to the execution control unit.

7. The device for accurately measuring the focusing force according to claim 1, characterized in that, The human-machine interaction unit includes a display screen and an audible and visual alarm, which is used to display the instantaneous coking force, the current furnace number and the equipment operating status in real time. When a warning command is received, an intermittent audible and visual alarm is executed, and when a shutdown command is received, a continuous high-intensity audible and visual alarm is executed and a fault code is displayed in a pop-up window.

8. The device for accurately measuring the focusing force according to claim 1, characterized in that, The execution control unit is connected to the main control PLC of the SCP machine or coke pusher. After receiving the interlocking shutdown command from the data processing module, it cuts off the coke pusher power circuit and locks the coke pusher mechanism, so that the coke pusher action cannot be started before manual fault reset.

9. The device for accurately measuring the focusing force according to claim 1, characterized in that, It also includes a remote data transmission module, which is connected to the data processing module and uses industrial Ethernet or 4G / 5G communication to remotely upload equipment operation data and overload fault records to the coking plant's central control platform.

10. A method for accurately measuring focusing force using the apparatus according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1: The equipment performs a self-test upon power-on. Under no-load conditions, the system automatically performs zero-point calibration to eliminate zero-point drift caused by equipment installation, weight, and assembly gaps. S2: Combining coke oven specifications and coal blending process parameters, input the two-level coke pushing force safety thresholds, namely the early warning threshold and the shutdown threshold, into the human-machine interaction unit; S3: Throughout the entire coking operation, the first pressure sensing module (4) and the second pressure sensing module (6) continuously collect load data in the forward and backward directions of the coking rod. After signal conditioning, the data is sent to the data processing module for real-time logic judgment. S4: When the measured focusing force is lower than the warning threshold, only the data is saved; when the measured focusing force is between the warning threshold and the shutdown threshold, the human-machine interaction unit executes an intermittent audible and visual alarm; when the measured focusing force reaches or exceeds the shutdown threshold, the human-machine interaction unit executes a continuous audible and visual alarm, and at the same time executes the control unit to interlock and shut down the focusing mechanism. S5: All operational data is automatically stored locally and synchronously uploaded to the plant's central control platform via a remote data transmission module; S6: After the production cycle ends, retrieve historical load data to optimize coal blending schemes and equipment maintenance plans.

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