Inverting reminding method and system of pulverizer for feed production

Abstract

The invention relates to the technical field of feed production equipment, and discloses a feed production pulverizer reversing reminding method and system, and the method comprises the steps: accumulating the operation time of a pulverizer in real time; judging whether the accumulated running time reaches a preset threshold value or not; when the threshold value is reached, a backward reminding signal is triggered while the pulverizer continuously operates; after the crusher is stopped, executing a start locking instruction to prevent the crusher from being started again; and after a reset signal input from the outside is received, unlocking is carried out. The system comprises an operation timing module, a control module, an alarm module and a man-machine interaction module. And the control module compares the accumulated operation time with a preset threshold value, triggers the alarm module when the accumulated operation time reaches the threshold value, and executes a start locking instruction after the crusher is shut down. According to the invention, automatic reminding and mandatory execution of hammer maintenance are realized, the service life of the hammer is effectively prolonged, the production cost is reduced, and the intelligent level of equipment management is improved.

Description

Technical Field

[0001] This invention relates to the field of feed production equipment technology, specifically to a method and system for reminding feed production crushers to reverse. Background Technology

[0002] The crusher is a key piece of equipment in the feed production process. Its core component, the hammer blades, undergoes continuous wear during high-speed impact and friction with the material, making them typical wear parts. To make full use of the four working angles of the hammer blades, extend their overall service life, and reduce production costs, the hammer blades are usually reversed or swapped after one set of diagonal wear reaches a certain extent, so that a completely new set of working angles can be used to continue working.

[0003] In current feed production practices, the management of reverse maintenance for crusher hammers typically relies heavily on manual experience, memory, or manual recording. Operators or equipment managers may use paper forms or electronic documents to roughly estimate the crusher's operating time as a basis for determining whether reverse maintenance is needed. However, this manual management method has significant limitations; its accuracy and reliability are difficult to guarantee. Inaccurate recording, omissions in personnel handover, or estimation errors often lead to deviations in the judgment of the actual effective working time of the hammers.

[0004] Furthermore, some companies adopt preventative maintenance plans based on fixed calendar cycles, such as requiring hammer mill inspection and reversal every month or quarter. This one-size-fits-all approach cannot adapt to dynamic operating conditions such as fluctuations in production tasks and changes in the materials being crushed. When production intensity is low, maintenance may be premature, resulting in wasted effective working life of the hammer mills and unnecessary downtime. Conversely, when production intensity is high or when crushing hard materials, maintenance may be delayed, allowing the hammer mills to continue operating in an excessively worn state. Excessive wear of the hammer mills not only significantly reduces crushing efficiency and increases motor energy consumption but also affects the particle size uniformity of the finished feed, thus adversely impacting product quality.

[0005] More importantly, even if managers determine the need for maintenance using the methods described above, existing management methods lack an automated and mandatory execution mechanism. Reminders and notifications often remain at the level of verbal or written communication. During busy production periods, operators may overlook or postpone maintenance operations, leading to equipment operating with defects. This not only exacerbates abnormal wear on the hammer blades but also poses risks to equipment safety and product quality stability. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a method and system for reminding the reverse direction of a feed production crusher. This solves the problem that in existing technologies, the maintenance of the reverse direction of the crusher hammers relies entirely on manual experience and records, leading to untimely maintenance, low efficiency, and consequently, shortened hammer lifespan and increased production costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: The first aspect of this invention provides a method for reminding a feed production grinder to reverse direction, the method comprising the following steps: S1: Real-time monitoring and accumulation of the crusher's operating time to obtain the accumulated operating time. In one specific implementation, the motor operating status S is obtained by monitoring electrical signals associated with the crusher's main motor control circuit. motor Among them, when the motor is running, S motor =1, S when the motor stops motor =0. The basic time unit of the system timer is Δt. Cumulative running time T cur The update calculation follows the formula: Among them, T cur [k] represents the cumulative running time at the k-th time step, T cur [k-1] represents the cumulative running time of the previous time step, S motor [k] represents the motor operating state detected at the k-th time step. This step only occurs in S... motor When the value is 1, the running time is accumulated.

[0008] S2: Determine the cumulative running time T cur Has the preset threshold T been reached? set The preset threshold T set It is a configurable parameter preset in the control module based on the material of the crusher hammer and the characteristics of the material to be crushed.

[0009] S3: When the cumulative running time T cur Reaching the preset threshold T set During continuous operation of the crusher, a tilting warning signal is triggered. This tilting warning signal may include an audible and visual alarm signal activated by an external audible and visual alarm device, and text alarm information may be displayed on the human-machine interface.

[0010] S4: After the crusher changes from running state to stopped state, a start-lock command is executed to prevent the crusher from starting again. The execution condition for the start-lock command is: the cumulative running time T cur The preset threshold T has been reached. setAnd the main motor of the crusher is in operating state S motor The switch changes from 1 to 0. The execution of this start-lock command is achieved by setting a logic breakpoint in the start-up control circuit of the crusher. When the command is executed, the logic breakpoint is activated, thereby interrupting the transmission of the start signal.

[0011] S5: Upon receiving an externally input reset signal, the start-lock command is released to restore the crusher to a startable state. This reset signal is generated by the operator using a reset control on the human-machine interface. Simultaneously with releasing the start-lock command, the accumulated running time T is recorded. cur Upon execution of the lock start command, a mandatory prompt message will be displayed on the human-machine interface to inform the crusher that it has been locked and the hammer reversal operation must be completed before resetting.

[0012] A second aspect of the present invention provides a reversing reminder system for a feed production grinder, the system comprising: The operation timing module is used to monitor the operation status of the crusher in real time and accumulate the operation time based on its operation status to obtain the cumulative operation time; A control module, connected to the running timer module, internally stores preset thresholds and is configured as follows: Receive the cumulative running time output by the running timer module and compare it with the preset threshold; When the cumulative running time reaches the preset threshold, a reverse reminder signal is generated; When it is determined that the cumulative running time has reached the preset threshold and the crusher is detected to change from running state to stopped state, a start lock command is generated and executed, which is used to prevent the crusher from starting. An alarm module, connected to the control module, is used to receive the tilting reminder signal and issue an audible and visual alarm or a text alarm. A human-machine interaction module, connected to the control module, is used to receive an externally input reset signal and send it to the control module. The human-machine interaction module is also used to display the cumulative running time, the preset threshold, and alarm information. The control module is further configured to, upon receiving the reset signal sent by the human-machine interaction module, release the start-up lock command and reset the cumulative running time to restore the crusher to a startable state.

[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. This invention ensures that the reverse maintenance of the hammer blades can be triggered at the appropriate time by accurately accumulating the running time of the crusher and comparing it with the preset threshold in real time. This avoids premature or delayed maintenance caused by human estimation or record-keeping oversight, thereby making full use of both working surfaces of the hammer blades, extending the service life of the entire set of hammer blades, and reducing the replacement frequency of spare parts and material costs.

[0014] 2. This invention automatically triggers multi-dimensional reminder signals, including sound, light, and human-machine interface, after the cumulative running time reaches a threshold. This transforms the traditional passive, manual maintenance management mode into a proactive, systematic automatic reminder mode. This reduces the memory burden of equipment status for production management personnel and the intensity of manual inspections, lowers the risk of maintenance omissions due to human negligence, and improves the automation and intelligence level of equipment management.

[0015] 3. This invention establishes a mandatory maintenance and protection mechanism by setting a start-up lock command that is executed only after the crusher has stopped. This mechanism ensures that the necessary hammer reversing operation is performed before the equipment is restarted without interrupting the current production task, thus fundamentally guaranteeing the strict adherence to the equipment maintenance procedures and ensuring that the crusher is always in good working condition, which helps to maintain stable crushing efficiency and feed product quality. Attached Figure Description

[0016] Figure 1 This is a flowchart of the method of the present invention; Figure 2 This is a system architecture diagram of the present invention. Detailed Implementation

[0017] 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. 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.

[0018] Example: Please see the appendix Figure 1 This invention provides a method and system for reminding feed pulverizers to reverse direction, comprising the following steps: S1: Monitor and accumulate the running time of the crusher in real time to obtain the cumulative running time; In this embodiment, real-time monitoring and accumulation of the crusher's running time is the basis for subsequent threshold judgment and alarm locking. Its purpose is to accurately obtain the pure and effective working time of the hammer blades in one working direction.

[0019] Specifically, the monitoring of running time is achieved by acquiring the logical state that characterizes whether the main motor of the crusher is actually running.

[0020] In a preferred implementation, the control module is electrically connected to or interacts with the main motor control circuit of the crusher. This interaction does not directly measure the power or speed of the motor, but rather monitors an electrical signal that can directly reflect the on / off state of the main motor contactor or solid-state relay.

[0021] For example, a normally open auxiliary contact of the main contactor can be used. When the main motor starts and the contactor is engaged, the auxiliary contact closes, providing a high-level or conduction signal to a digital input terminal of the control module; when the main motor stops and the contactor is released, the contact opens, and the signal is interrupted.

[0022] Therefore, the control module can convert this physical electrical signal into an internal logical state variable, namely the motor operating state S. motor This variable is defined as: S when the main motor of the crusher is running. motor =1; when it is in a stopped state, S motor =0. This method ensures that the timing process only occurs when the crusher is working effectively, eliminating time interference during standby, maintenance, or idle states.

[0023] Based on the acquired motor operating status S motor The control module internally executes a discrete-time accumulation algorithm to calculate the cumulative running time T in an iterative update manner. cur The algorithm executes once per fixed scan cycle of the control module or within each basic time unit Δt defined by the internal timer. The cumulative runtime update calculation follows the formula: In this formula: T cur [k] represents the latest cumulative running time obtained at the current k-th calculation step. This value is stored in a specific data register of the control module and is dynamically refreshed.

[0024] T cur [k-1] represents the cumulative running time value stored in the previous calculation step, i.e., the (k-1)th step. This reflects the iterative accumulation characteristic of the process.

[0025] S motor [k] represents the real-time motor operating status acquired within the current k-th calculation step. When the motor is running (S... motor When [k] = 1), the incremental part of the formula is positive, and the cumulative time increases; when the motor stops (S... motorWhen [k]=0), the incremental part of the formula is zero, and the cumulative time remains unchanged.

[0026] Δt is the basic time unit for the control module to perform the accumulation operation, and its unit is usually seconds. Preferably, Δt can be a scan cycle of the control module, or an interrupt cycle set by an internal software timer, to ensure the stability and accuracy of the timing.

[0027] The constant 3600 is used to convert the accumulated result of the basic time unit Δt (seconds) into a value that is then compared with the subsequent preset threshold T. set The units are matched with hours (h), thus ensuring the consistency of data units within the system.

[0028] Furthermore, the timing function in this embodiment is implemented by constructing logic within the software program of the control module. This can be achieved using standard function blocks in a programmable logic controller, such as TONR or counter combinations, without the need for an additional external hardware timer.

[0029] The control module continuously calculates and updates the cumulative running time T. cur Simultaneously, this value is transmitted to the human-machine interface for display in real time. This allows on-site operators to intuitively observe the current usage progress of the hammer, providing transparent data support for production management. The cumulative running time T... cur As a core dynamic parameter, it is used as the direct basis for threshold judgment in subsequent steps, thus forming the starting point of the entire automated reminder and locking logic chain.

[0030] S2: Determine whether the cumulative running time has reached the preset threshold; In this embodiment, the step of determining whether the cumulative running time has reached a preset threshold is a key logical link connecting the running status perception and maintenance reminder actions. This step is performed continuously and automatically within the control module, with the aim of transforming the invisible hammer wear process into a judgment event that can be precisely quantified.

[0031] Specifically, this judgment process is based on two core data points: one is the cumulative running time T, which is accumulated and dynamically updated in real time during the aforementioned steps. cur Secondly, the unidirectional running time threshold T of the hammer blade is preset and stored inside the control module. set .

[0032] Furthermore, a preset threshold T setIt is not a fixed constant, but a parameter that can be flexibly configured by the user according to actual working conditions. Its value is usually determined by considering multiple factors, such as the material and heat treatment hardness of the crusher hammers themselves, the type, hardness, moisture content, and fiber content of the material to be crushed, and the specific requirements for the fineness of the finished product. Specifically, for the convenience of those skilled in the art, the following examples illustrate the preset threshold T. set The setting is based on: For hammer blades, hardness and wear resistance are key factors determining their service life. For example, for hammer blades made of conventional high-manganese steel, when processing medium-hard materials such as standard corn, the preset threshold T for unidirectional operation... set The time limit can be preferably set within the range of 150 to 250 hours. For hammer blades with inlaid carbide (such as tungsten carbide) tips, due to their higher hardness and wear resistance, the preset threshold T can be set higher when processing the same material. set Then the lifespan can be increased accordingly, for example, set in the range of 400 to 600 hours.

[0033] The wear rate of the hammer blades is directly affected by the characteristics of the material to be crushed, such as its hardness, abrasiveness, and fiber content. Using hammer blades of the same material as a benchmark, if the standard material to be crushed is corn, the preset threshold T... set The preset threshold T is 200 hours. When the material to be crushed is changed to a more abrasive, high-fiber raw material (such as some hay or hulled grains), the preset threshold T should be adjusted to prevent the hammer blades from becoming dull too quickly. set Adjust accordingly, for example, by 20%-30%, setting the time to 140-160 hours; conversely, if the material to be ground is of low hardness and easy to grind (such as soybean meal), the preset threshold T can be increased. set Adjust it appropriately.

[0034] It should be noted that the above values ​​are reference examples under typical working conditions. In actual applications, users can use these reference values ​​as initial settings and fine-tune them according to the wear of the hammer blades in actual production through the human-machine interface to obtain the optimal threshold setting.

[0035] Preferably, the preset threshold T set The parameters can be set and modified through a human-machine interface that communicates with the control module, and are stored in the non-volatile storage area of ​​the control module to ensure that the critical parameters are not lost after the system loses power or restarts.

[0036] During system operation, the control module performs a comparison operation once during each scan cycle. This comparison operation reads the cumulative running time T in real time. cur The current value, compared with the stored preset threshold T setThe values ​​are compared mathematically. This judgment logic can be formally described as a conditional statement, the core condition of which is: T cur ≥T set ; The condition being met means that the hammer blade has been used for the current working direction for a period of time that has reached or exceeded its recommended maintenance cycle threshold.

[0037] Once the control module determines that the above conditions are met, the system will not immediately stop production. Instead, it will first generate one or more status flags internally. For example, the system will set an internal alarm status flag F. alarm This changes its logical state from 0 (false) to 1 (true). This alarm status flag F alarm The setting of this flag is the direct trigger source for all subsequent alarm actions.

[0038] Therefore, this judgment logic acts as a bridge connecting facts and actions, transforming experience-based fuzzy management into automated decision-making based on precise data comparison in a definite and unambiguous manner. By continuously executing this judgment within each scan cycle, the system ensures extremely high immediacy in its response to maintenance nodes, thus providing an accurate prerequisite for triggering reversal alert signals in subsequent steps.

[0039] S3: When the cumulative running time reaches a preset threshold, a reversing reminder signal is triggered while the crusher continues to run. In this embodiment, the step of triggering the reversing reminder signal after the cumulative running time reaches the preset threshold is the core manifestation of the proactive and predictive maintenance management of this invention. Its fundamental purpose is to issue clear and timely maintenance warnings to operators and managers, while ensuring that the currently ongoing production tasks are not affected by unplanned interruptions.

[0040] Specifically, the aforementioned judgment steps determine condition T. cur ≥T set Once established, the control module will immediately execute a series of preset alarm actions. A key technical feature is that the execution of these actions is related to the operating status S of the main motor of the crusher. motor They are independent of each other. In other words, even if the alarm conditions are met, as long as the production process has not ended normally, the control module will not send any stop command to the main motor control circuit, thus ensuring that the crusher can continue to run until it completes its current batch crushing task.

[0041] Under this premise, the tilting reminder signal is not a single signal, but a multi-dimensional and multi-channel composite signal system to ensure that information can effectively reach personnel in different positions.

[0042] First, within the control module, this alert signal manifests as an internal logical variable, namely the alarm status flag F. alarm The setting operation of this flag. The logical state of this flag switches from 0 (normal) to 1 (alarm), and this state will serve as the unified driving source for all external alarm responses. alarm Once the flag is set, it will remain in its alarm state until a reset signal is received.

[0043] Secondly, the alert signal will be materialized into one or more physical signals that can be directly perceived by on-site personnel. Preferably, one or more digital outputs of the control module are electrically connected to an external audible and visual alarm module. When the alarm status flag F... alarm When set to 1, the control module drives the corresponding output terminal, thereby activating the audible and visual alarm module. Once activated, this module emits a preset, highly recognizable intermittent buzzing sound and a high-frequency flashing light signal via, for example, a red or yellow warning light. This dual audible and visual alert method ensures that in noisy and complex production workshop environments, on-site inspectors or operators can quickly notice any abnormal equipment conditions.

[0044] Furthermore, this alert signal will be presented in an information-based manner on the central control system or the human-machine interface at the site. Specifically, the control module will transmit the alarm status flag F via industrial Ethernet, RS-485, or other communication buses. alarm The data frames, including those from the alarm status, are sent to the human-machine interface. Upon detecting this alarm status, the internal program of the human-machine interface immediately triggers changes to the interface elements.

[0045] In summary, this step employs a non-interrupted alarm strategy that, while ensuring production continuity, utilizes the setting of internal logic flags to trigger external physical audible and visual alarms and interface information alarms, forming a comprehensive alert network. This successfully transforms abstract runtime data into specific, clear, and indispensable work instructions for operators, laying a solid foundation for subsequent shutdown locking and forced maintenance procedures.

[0046] S4: After the crusher changes from running state to stopped state, execute the start lock command to prevent the crusher from starting again; In this embodiment, the step of executing the start-lock command is not triggered by an arbitrary shutdown event, but is strictly limited to the time when the cumulative running time has reached a preset threshold, and the crusher changes from a running state to a stopped state. This is a key safeguard measure of the present invention to ensure that maintenance reminders are enforced. Its purpose is to transform the backward reminder signal issued in the aforementioned steps from a negligible suggestion into an insurmountable prerequisite for operation, thereby seamlessly and mandatorily embedding maintenance operations into the gaps in the production process.

[0047] Specifically, the execution of this locking command does not occur immediately upon the alarm condition being met, but rather follows a delayed triggering and conditional AND logic. The control module continuously monitors the cumulative running time T. cur and motor operating status S motor At the same time, it has an internally set start-up lock flag F specifically for this purpose. lock .

[0048] Furthermore, the activation lock flag F lock The setting logic is designed so that the flag's logical state switches from 0 (unlocked) to 1 (locked) only if two preconditions are met simultaneously. These two preconditions are: Cumulative running time T cur The preset threshold T has been reached or exceeded. set .

[0049] Main motor operating status S of the crusher motor A value of 0 indicates that the motor is in a stopped state.

[0050] This logic can be formally described as follows: In other words, once the cumulative time reaches the threshold, as long as the crusher is still running (S motor =1), activate the locking flag F lock The value will always remain at 0, and the operation of the crusher will not be affected in any way. The control module will only detect S when the operator stops the crusher based on the normal production plan. motor The state transition from 1 to 0 occurs due to condition (T) cur ≥T set )∧S motor If the condition = 0 is met, the locking flag F is activated. lock It was then officially set to 1.

[0051] The execution of the start-lock command is achieved by introducing a start-lock flag F into the start-up control logic of the crusher. lock This is achieved through control logic breakpoints or interlock conditions. Preferably, in the control module's program, the final start command C that drives the main motor contactor coil is... start The generation depends on the operator's manual start command. With start lock flag F lock The logical relationship. This relationship can be expressed as: In this logic, the symbol ∧ represents the logical AND operation, and the symbol... Represents a logical NOT operation. When the system is in a locked state (F... lock =1), then The value is 0. At this time, it doesn't matter whether the operator issues a manual start command. The final result of the logical AND operation is C start The value must be 0. This means that the start command cannot be transmitted to the final actuator, thus effectively preventing the crusher from restarting.

[0052] At the same time, when the lock start command is executed, the human-machine interface will display a clear mandatory prompt message, such as "Equipment locked: Please perform hammer reversal maintenance and reset", to inform the operator why the equipment cannot be started and the next steps to be taken.

[0053] In this way, the present invention directly links the execution of maintenance with the reusability of the equipment, ensuring that maintenance work will be performed without affecting the normal production process, thereby guaranteeing the strict adherence to the hammer blade tilting system.

[0054] S5: Upon receiving an external reset signal, release the start lock command to restore the crusher to the startable state.

[0055] In this embodiment, the step of releasing the start-lock command after receiving an external reset signal is the final step in completing the entire alert-lock-maintenance-unlock closed-loop control process. Its purpose is to provide an authoritative, manually confirmed interactive means to safely restore the system from a forced-lock state to a normal standby and operable state after maintenance work has been successfully completed.

[0056] Specifically, the external reset signal originates from an active operation performed by the operator on the human-machine interface after confirming that the hammer blade tilting or replacement work has been physically completed. Preferably, a dedicated virtual control, such as a button labeled "Maintenance Complete and Reset," is provided on a specific screen of the human-machine interface. To prevent accidental operation, this control can be further configured with operation permission verification, such as requiring a password or login by a user with a specific level of authorization.

[0057] When the operator triggers this control, the human-computer interaction interface will generate a momentary pulse signal, namely the reset signal R. signal It sends this signal to a specified input address or data bit of the control module through its communication link with the control module.

[0058] Furthermore, the program logic inside the control module is configured to continuously monitor the reset signal R. signalThe state of R. To ensure operational accuracy, the control module preferably employs a rising edge triggering mechanism to capture this signal. This means that only when R is detected... signal The subsequent reset procedure will only be triggered during the scan cycle when the logic level of the signal changes from 0 to 1, and will not respond to the continuous high level state of the signal.

[0059] Once the reset signal R is detected signal Upon successful triggering, the control module will immediately and automatically execute a complete system reset procedure. This procedure consists of a series of indivisible atomic operations: First, the control module will activate the lock flag F. lock The logic state is forcibly reset from 1 to 0. This is the core action for unlocking. This operation directly changes the aforementioned start control logic expression. In The calculation result for some parts changed from 0 to 1. The direct effect is that the logic breakpoint previously set in the startup loop is removed, thus enabling the operator's manual start command C to be executed. manualstart The pulverizer's start-up conditions were restored, allowing for seamless transmission to the final actuators.

[0060] Secondly, or simultaneously with the above steps, the control module will set the alarm status flag F. alarm It also resets from 1 to 0. The purpose of this operation is to terminate all alarm outputs related to this maintenance cycle. As a result, the output point driving the external audible and visual alarm module will lose power, thereby stopping the audible and visual alarm; at the same time, the alarm status information sent to the human-machine interface will also be cleared, so that the alarm bar, scrolling text or pop-up window on the interface will return to the normal display state.

[0061] Finally, to ensure the accurate start of the next monitoring cycle, the control module clears the data register used to store the cumulative running time, thus obtaining the cumulative running time T. cur The value is restored to 0. This operation marks the complete end of the previous hammer blade work cycle and prepares the system to start from scratch for the next round of running time accumulation for the new tilting or newly replaced hammer blades.

[0062] Please see the appendix Figure 2 A feed production grinder tilting reminder system includes the following modules: The timing module is used to monitor and accumulate the running time of the crusher in real time to obtain the cumulative running time; The control module, connected to the running timing module, stores preset thresholds internally and is configured as follows: Determine whether the cumulative running time has reached a preset threshold; When the cumulative running time reaches a preset threshold, a reverse reminder signal is generated; After the crusher changes from running to stopped, a start lock command is generated and executed. The alarm module is used to receive tilting warning signals and issue an alarm. The human-computer interaction module is used to receive external reset signals and send them to the control module; The control module is also configured to release the start-lock command after receiving a reset signal, so that the crusher can be restored to the startable state.

[0063] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for reminding feed pulverizers to reverse direction, characterized in that, Includes the following steps: S1: Monitor and accumulate the running time of the crusher in real time to obtain the cumulative running time; S2: Determine whether the cumulative running time has reached a preset threshold; S3: When the cumulative running time reaches the preset threshold, a reversing reminder signal is triggered while the crusher continues to run; S4: After the crusher changes from the running state to the stopped state, a start lock command is executed to prevent the crusher from starting again; S5: Upon receiving an external reset signal, release the start-lock command to restore the crusher to the startable state.

2. The method according to claim 1, characterized in that, In step S1, the energization status of the main motor of the crusher is monitored to determine whether it is in operation, and the running time is accumulated only when the main motor is energized.

3. The method according to claim 1, characterized in that, In step S3, the tilting reminder signal includes an audible and visual alarm signal, and text alarm information is displayed on the human-machine interface.

4. The method according to claim 1, characterized in that, The start-lock command in S4 is implemented by setting a logic breakpoint in the start-up control circuit of the crusher. The logic breakpoint is activated when the start-lock command is executed, thereby interrupting the transmission of the start signal.

5. The method according to claim 1, characterized in that, The reset signal in S5 is generated by operating the reset control set on the human-computer interaction interface.

6. The method according to claim 1, characterized in that, In step S5, while releasing the start-up lock command, the cumulative running time is reset to zero.

7. The method according to claim 1, characterized in that, In step S4, the execution condition for the start-lock command is: the cumulative running time has reached the preset threshold, and the main motor of the crusher has switched from the running state to the stopped state.

8. The method according to claim 3, characterized in that, After the start-lock command is executed, a mandatory prompt message will be displayed on the human-machine interface to inform that the crusher has been locked and the hammer reversal operation must be completed before resetting.

9. The method according to claim 1, characterized in that, The preset threshold is a configurable parameter pre-set in the control module based on the material of the crusher hammer and the characteristics of the material to be crushed.

10. A reverse reminder system for a feed production grinder, and a reverse reminder method for a feed production grinder according to any one of claims 1-9, characterized in that, include: The operation timing module is used to monitor and accumulate the operation time of the crusher in real time to obtain the cumulative operation time; The control module, connected to the running timer module, stores preset thresholds internally and is configured as follows: Determine whether the cumulative running time has reached the preset threshold; When the cumulative running time reaches the preset threshold, a reverse reminder signal is generated; After the crusher changes from running state to stopped state, a start lock command is generated and executed; An alarm module is used to receive the tilting reminder signal and issue an alarm. The human-computer interaction module is used to receive external reset signals and send them to the control module; The control module is further configured to release the start-lock command after receiving the reset signal, so that the crusher can be restored to the startable state.

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