A ball mill interlocking control device for a mining grinding section

Abstract

This invention provides an interlocking control device for a ball mill in a mining grinding section, relating to the technical field of ball mill control devices. It includes a ball mill body, a support frame fixedly mounted on one side of the ball mill body, unloading grooves on both side walls of the support frame, symmetrical slots at the upper end of the support frame, an interlocking control device mounted on the support frame, a display screen on one side of the interlocking control device, and symmetrical mounting slots at the lower end of the interlocking control device. A heat dissipation vent is located at the center of the lower end of the interlocking control device, and fastening mechanisms are installed inside both mounting slots. The fastening mechanisms include composite elastomers, with two composite elastomers respectively housed in the two mounting slots. Limiting grooves are symmetrically opened on the side walls of the two screws. The composite elastomers can fill gaps caused by wear, restoring the initial preload and damping performance. Their function can be restored without replacing the composite elastomers, solving the problem of traditional elastic damping components being "unusable upon wear."

Description

Technical Field

[0001] This invention belongs to the technical field of ball mill control devices, and more specifically, relates to an interlocking control device for a ball mill in a mining grinding section. Background Technology

[0002] In the grinding section of a mine, the ball mill is a key crushing and grinding equipment. Its operational stability directly affects production efficiency and operational safety. When the ball mill is working, the cylinder generates high-frequency vibrations (usually 10-50Hz) due to the impact and friction between the steel balls and the ore. In addition, the working environment has a high dust concentration (such as ore chips and grinding dust) and large humidity fluctuations, which places stringent requirements on the reliability of the supporting interlocking control device. The interlocking control device is responsible for monitoring the equipment operating parameters and implementing interlocking protection.

[0003] However, the existing ball mill interlocking control devices still have the following shortcomings in use:

[0004] 1. Traditional interlocking control devices mostly use rigid brackets for fixing or ordinary rubber pads for vibration damping. With rigid fixing, the high-frequency vibration of the ball mill is directly transmitted to the inside of the control device, causing electronic components (such as PLC, sensors, and terminals) to have faults such as broken solder joints, desoldered capacitors, and loose wiring due to long-term vibration. The equipment has a short fault-free operation time. When using ordinary rubber pads for vibration damping, although some vibration can be initially absorbed, the rubber pads are prone to surface wear and internal cracks due to fatigue after being subjected to the "compression-rebound" cycle for a long time. This leads to an increase in the fit gap with the bracket and a decrease in the preload.

[0005] 2. In existing designs, heat dissipation channels are mostly straight holes or simple gap structures. In the high dust environment of mines, dust can easily enter the device through the channels and adhere to the surface of the circuit board to form a "dust layer", which leads to a decrease in heat dissipation efficiency and causes faults such as short circuits and poor contact.

[0006] 3. Some existing technologies add filters to the heat dissipation channels to block dust. However, after long-term use, dust will accumulate and clog the mesh, further deteriorating the heat dissipation effect. Due to the continuous vibration of the ball mill and the narrow working environment, manual cleaning of the filters requires frequent machine shutdowns, which is time-consuming each time and seriously affects the continuity of production. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides an interlocking control device for ball mills in the grinding section of a mine, which solves the problems of existing devices being prone to component failure due to rigid fixing or ordinary rubber pad shock absorption, easy wear of rubber pads, simple heat dissipation channel design leading to dust intrusion and malfunctions, and easy clogging of filters requiring frequent shutdowns for cleaning, thus affecting production.

[0008] A ball mill interlocking control device for a grinding section in a mine includes a ball mill body, a support frame fixedly installed on one side of the ball mill body, a discharge groove opened on both side walls of the support, slots symmetrically opened at the upper end of the support, an interlocking control device installed on the support, a display screen installed on one side of the interlocking control device, and mounting slots symmetrically opened at the lower end of the interlocking control device.

[0009] A heat dissipation vent is provided at the center of the lower end of the interlocking control device, and a fastening mechanism is provided inside both of the mounting slots;

[0010] The fastening mechanism includes a composite elastomer, with two composite elastomers respectively housed in two mounting slots. Each composite elastomer has an inner groove at its upper end and a screw fixedly mounted at its lower end. The screw has a structure that is thicker at the top and thinner at the bottom. A fastening nut is threaded onto each screw, and symmetrical limit grooves are formed on the sidewalls of both screws. By locking the fastening nuts, the composite elastomer is in a slightly compressed state (pre-deformed) during installation, ensuring a tight fit between it and the bracket contact surface, laying the foundation for subsequent shock absorption.

[0011] Preferably, each of the two inner grooves is provided with a pressure strip, and an inner rod is fixedly installed at the lower end of each of the two pressure strips. The two inner rods are slidably installed in the two screws respectively. Limiting blocks are symmetrically fixedly installed on the side walls of the two inner rods. The two sets of limiting blocks are slidably installed in the two sets of limiting grooves respectively. The two sets of limiting blocks are provided with slots. Threaded rings are threadedly installed on each of the two screws. The two threaded rings are rotatably installed in the two sets of slots respectively. The threaded rings have the same diameter as the upper end of the screws. They can actively fill the gaps caused by wear, restore the initial preload and damping performance, and restore their function without replacing the composite elastomer. This solves the problem of "wear equals scrap" in traditional elastic damping components.

[0012] Preferably, the lower end of the interlocking control device is provided with a sliding groove and a strip groove, and the side wall of the interlocking control device is provided with a connecting groove. The connecting groove passes through the strip groove and connects with the sliding groove. Side strips are symmetrically fixedly installed on the side wall of the interlocking control device. Rotating columns are uniformly and equidistantly installed inside the strip groove. Metal springs are fixedly installed at equal intervals at the lower ends of the two side strips. Each rotating column is provided with a receiving groove. Each metal spring is respectively disposed in each receiving groove. A filter screen is slidably installed inside the sliding groove. A protrusion is fixedly installed on the side wall of the filter screen. The protrusion is slidably installed in the connecting groove. "Forced convection" is achieved through the T-shaped channel. External cold air enters from the horizontal main channel, flows through the vertical branch to the internal heating area of ​​the device, and then carries heat out from the other end of the channel, resulting in higher heat dissipation efficiency.

[0013] Preferably, a fixing strip is fixedly installed inside the filter screen, and arc-shaped blocks are evenly and equidistantly fixedly installed on the side wall of the fixing strip. A slide is slidably installed on the support frame of the ball mill body, and a rubber buffer pad is fixedly installed on the side wall of the slide. A connecting block is fixedly installed on the side wall of the support frame of the ball mill body, and a protruding post is rotatably installed inside the connecting block. A positioning nut is threaded on the protruding post. Vibration energy is consumed through elastic deformation-recovery cycle, which avoids the breakage and loosening of solder joints of internal components (electronic components, wiring terminals) due to high-frequency vibration, and improves the stable operation capability of the interlocking control device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, by designing two composite elastomers, the vibration energy can be converted into frictional heat within rubber molecules (damping effect) through the elastic deformation-recovery cycle under high-frequency vibration (typically 10-50Hz) of a ball mill, thus achieving "consumption-type absorption" of vibration energy. By locking the fastening nut, the composite elastomer is in a slightly compressed state (preset deformation) during the installation stage, ensuring a tight fit between it and the contact surface of the bracket, laying the foundation for subsequent shock absorption function.

[0016] In this invention, a bracket, a composite elastomer, a screw, a limiting groove, a pressure strip, an inner rod, limiting blocks, and a threaded ring are provided. Each vibration causes the composite elastomer to undergo "compression-rebound" or "shear-reset" deformation, which can lead to surface wear, internal cracking, and even local failure due to fatigue. This manifests as an increased gap between the composite elastomer and the bracket, and a decrease in preload—directly resulting in a reduction in damping effect (increased vibration transmission rate) and a decrease in fixing reliability. At this time, the threaded ring can be rotated on the screw. The rotation of the threaded ring will drive the two limiting blocks to move downward in the two limiting grooves respectively. The two limiting blocks will drive the inner rod to move downward inside the screw, and the inner rod will drive the pressure strip to move downward inside the inner groove. At this time, the pressure strip will squeeze the composite elastomer, keeping it in a tight position against the bracket, filling the gap caused by wear, restoring the initial preload and damping performance. The function can be restored without replacing the composite elastomer, solving the pain point of "wear equals scrap" in traditional elastic damping components.

[0017] In this invention, a support frame, an interlocking control device, and a composite elastomer are provided. Since there will be a gap between the support frame and the interlocking control device, this gap serves as a heat dissipation channel. The heat dissipation channel as a whole forms a T-shaped structure of "transverse main channel + longitudinal branch channel". Under high-frequency vibration (10-50Hz), the vibration of the ball mill itself will drive the surrounding air to form a "turbulent airflow". Forced convection is achieved through the T-shaped channel. External cold air enters from the transverse main channel, flows through the longitudinal branch to the internal heating area of ​​the device, and then carries heat out from the other end of the channel, resulting in higher heat dissipation efficiency. Moreover, the gap is formed by the support of the composite elastomer, and its elastic deformation will produce a small "breathing effect" (periodic expansion / contraction of the gap) with the vibration, further enhancing airflow exchange and avoiding channel blockage caused by dust accumulation.

[0018] In this invention, by providing a bracket, an interlocking control device, and a filter screen, the filter screen will block the gap between the two brackets and the interlocking control device after installation, thereby effectively preventing external dust from entering the interlocking control device through the heat dissipation channel during ball mill operation, protecting the electronic components inside the interlocking control device from dust wear, and extending the equipment life.

[0019] In this invention, a ball mill body, a discharge chute, a connecting chute, side bars, a rotating column, a filter screen, and an arc-shaped block are provided. When the ball mill body operates, it will generate vibration, which will be transmitted to the connecting chute and the side bars. The side bars will vibrate accordingly, and the rotating column will deflect slightly under the vibration of the side bars. At this time, the rotating column will come into contact with the arc-shaped block. After the arc-shaped block is subjected to the squeezing force, it will drive the filter screen to vibrate slightly, thereby shaking off the dust adhering to the filter screen and discharging it through the discharge chute. This design realizes cleaning while running, reduces maintenance time, and lowers production costs. It does not require additional energy consumption, and its advantages are particularly obvious in scenarios such as mines where energy costs are high and wiring / piping is difficult.

[0020] In this invention, a ball mill body, a slide, a rubber buffer pad, and a protruding column are provided. The rotation of the protruding column will compress the slide. At this time, the slide, under force, will drive the rubber buffer pad to move to the left. The rubber buffer pad will press the connecting wire onto the support frame of the ball mill body, thus completing the positioning of the connecting wire. This makes the wire harness neat and less messy. Furthermore, the support structure of the rubber buffer pad reduces the vibration transmission rate. Vibration energy is consumed through elastic deformation-recovery cycle, preventing internal components (electronic parts, terminals) from experiencing solder joint breakage or loosening due to high-frequency vibration, thereby improving the stable operation capability of the interlocking control device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the ball mill body connection structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the exploded structure of the bracket connection of the present invention;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the composite elastomer connection of the present invention;

[0025] Figure 5 This is a schematic diagram of the exploded structure of the pressure strip connection of the present invention;

[0026] Figure 6 This is a schematic diagram of the exploded structure of the filter screen connection of the present invention;

[0027] Figure 7 This is a schematic diagram of the exploded structure of the side strip connection of the present invention;

[0028] Figure 8 This is a schematic diagram of the heat dissipation port of the present invention;

[0029] Figure 9 This is the present invention. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0030] Figure 10 This is the present invention. Figure 7 Enlarged schematic diagram of the structure at point C;

[0031] Figure 11 This is the present invention. Figure 8 Enlarged structural diagram at point B.

[0032] In the diagram, the correspondence between component names and attached drawing numbers is as follows: 1. Ball mill body; 2. Support; 3. Discharge chute; 4. Slot; 5. Interlock control device; 6. Display screen; 7. Mounting slot; 8. Heat dissipation vent; 9. Composite elastomer; 10. Inner groove; 11. Screw; 12. Fastening nut; 13. Limiting groove; 14. Pressure strip; 15. Inner rod; 16. Limiting block; 17. Slot; 18. Threaded ring; 19. Slide groove; 20. Strip groove; 21. Connecting groove; 22. Side strip; 23. Rotating column; 24. Filter screen; 25. Protrusion; 26. Fixing strip; 27. Arc block; 28. Slide frame; 29. ​​Rubber buffer pad; 30. Connecting block; 31. Protrusion; 32. Positioning nut; 33. Metal spring; 34. Receiving groove. Detailed Implementation

[0033] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0034] Please see Figures 1-11This invention provides an interlocking control device for a ball mill in a mining grinding section, comprising a ball mill body 1, a support frame 2 fixedly mounted on one side of the ball mill body 1, discharge troughs 3 on both side walls of the support 2, slots 4 symmetrically provided at the upper end of the support 2, and an interlocking control device 5 mounted on the support 2.

[0035] The interlocking control device 5 consists of a PLC controller, a power supply module, a vibration monitoring module, a temperature and speed monitoring module, a communication module, a data logger, a safety relay module, armored shielded cables, and quick-connect connectors.

[0036] The PLC controller receives real-time data from various monitoring modules (vibration, temperature, and speed), performs logical calculations using preset programs (such as vibration threshold, temperature upper limit, and speed range), and determines whether the ball mill is operating normally. When the monitored data exceeds the safe range, it immediately sends a command to the safety relay module, triggering interlocking actions such as shutdown and alarm; simultaneously, it synchronizes the real-time data to the display screen 6 and the data logger, and uploads it to the remote monitoring system via the communication module.

[0037] The input terminal connects to the vibration monitoring module and the temperature and speed monitoring module to receive analog / digital signals.

[0038] The output terminal connects to a safety relay module (control execution), a display screen 6 (data display), a data logger (data storage), and a communication module (remote transmission) to achieve closed-loop control of "monitoring-judgment-execution".

[0039] The power module provides a stable DC power supply (such as 24V) for all electronic components (PLC controller, various monitoring modules, relays, etc.) inside the interlocking control device. In view of the large voltage fluctuations in the mine power grid, it has built-in voltage regulator circuit and surge protector, which can withstand voltage fluctuations of ±20% and instantaneous impacts (such as lightning strikes and power grid interference), ensuring stable power supply for each module and avoiding control failure due to abnormal voltage.

[0040] It supplies power to all power-consuming components such as the PLC controller, monitoring module, and safety relay module through armored shielded cables, serving as the "power source" for the entire device;

[0041] The vibration monitoring module collects the vibration frequency (10-50Hz) and amplitude data of the ball mill in real time through the built-in piezoelectric vibration sensor. This data directly reflects the operational stability of the ball mill (such as bearing wear, material blockage and other faults that can cause abnormal vibration).

[0042] Vibration data is converted into electrical signals and transmitted to the PLC controller, serving as one of the core bases for the PLC to determine whether an interlock is triggered (e.g., when the vibration amplitude exceeds a preset value, the PLC instructs the safety relay to cut off the power to the ball mill).

[0043] The temperature and speed monitoring module uses thermocouple sensors (installed on key heat-generating parts such as the ball mill motor and bearings) to monitor the temperature of core components in real time (such as motor winding temperature and bearing temperature) to prevent overheating damage caused by overload or lubrication failure. It also uses a magnetoelectric speed sensor (installed on the ball mill drum shaft end) to monitor the drum speed, ensuring it operates within the set range (abnormal speed may lead to insufficient material grinding or equipment overload).

[0044] Temperature and speed data are converted into electrical signals and transmitted to the PLC controller, which, together with vibration data, serve as the basis for interlock judgment (such as triggering shutdown when the motor temperature exceeds 120°C).

[0045] The safety relay module receives instructions from the PLC controller and directly controls the power circuit of the ball mill (such as the motor power supply). Its core function is to quickly cut off the power supply (response time ≤50ms) when the ball mill malfunctions (such as excessive vibration, excessive temperature, or abnormal speed) to prevent the fault from escalating; at the same time, it triggers an audible and visual alarm (via an external alarm device with a reserved interface in the device) to prompt the operator to handle the situation.

[0046] The input terminal connects to the PLC controller to receive control commands; the output terminal connects to the ball mill power system via armored shielded cables, making it a key actuator for realizing the "monitor-stop" interlocking action.

[0047] The data logger stores the ball mill's operating data in real time (such as vibration curves, temperature changes, speed records, and interlock trigger times), with a storage capacity of ≥1 year (calculated based on data collection every 10 seconds). When the ball mill malfunctions, the cause of the malfunction can be traced by retrieving historical data, providing a basis for maintenance.

[0048] It connects to the PLC controller via an internal bus to receive and store the operating data transmitted by the PLC in real time.

[0049] The communication module enables information exchange between the interlock control device and the remote monitoring center. It supports wired (such as Ethernet) or wireless (such as 4G / 5G) communication methods, and transmits the real-time operating data (vibration, temperature, speed) and interlock status (normal / alarm / stop) of the ball mill to the remote platform. At the same time, it can receive remote control commands (such as remote reset, parameter modification) to realize remote monitoring in unattended scenarios.

[0050] It connects to the PLC controller via a data interface, serving as a "data transmission bridge" to achieve linkage between local control and remote management;

[0051] Armored shielded cables serve as the circuit connection medium between the device and external equipment (such as ball mill motors and sensors). The outer armor layer (metal braided mesh) can resist mechanical wear in the mining environment (such as dust erosion and equipment collision), while the inner shielding layer (aluminum foil) can isolate electromagnetic interference (such as electromagnetic signals generated by motor operation), ensuring the stable transmission of monitoring signals and control commands.

[0052] It connects all electronic components and is the physical carrier for the transmission of circuit signals and power.

[0053] Quick-connect connectors are used for rapid docking of various modules within the device. Their interfaces are designed to prevent mis-insertion and have a self-locking function. They can maintain a tight connection (insertion and extraction force ≥50N) under high-frequency vibration (10-50Hz) of the ball mill, avoiding poor contact due to vibration.

[0054] When used with armored shielded cables, it simplifies module installation and maintenance processes, adapting to the frequent maintenance needs in mining sites.

[0055] The interlocking control device 5 is equipped with a display screen 6 on one side, which can display real-time vibration curves, temperature trend graphs, and equipment operating status. The lower end of the interlocking control device 5 is symmetrically provided with mounting slots 7.

[0056] A heat dissipation vent 8 is provided at the center of the lower end of the interlocking control device 5, and fastening mechanisms are provided inside the two mounting slots 7.

[0057] The fastening mechanism includes two composite elastomers 9, each housed within a mounting groove 7. Each composite elastomer 9 has an inner groove 10 at its upper end, and a screw 11 is fixedly mounted at its lower end. The screw 11 has a thicker upper end and a thinner lower end. Each screw 11 is threaded with a fastening nut 12. In use, the two screws 11 on the interlocking control device 5 can be inserted into the bracket 2, and then the two fastening nuts 12 can be rotated on the two screws 11 to complete the fixation. At this time, the interlocking control device 5 will... The composite elastomers 9 are fixed to the bracket 2. The design of the two composite elastomers 9 can convert vibration energy into internal friction heat (damping effect) of rubber molecules through elastic deformation-recovery cycle under high-frequency vibration of the ball mill (usually 10-50Hz in the inner groove), thus realizing the "dissipative absorption" of vibration energy. By locking the fastening nut 12, the composite elastomers 9 are in a slightly compressed state (pre-deformed) during the installation stage, ensuring a tight fit between them and the contact surface of the bracket 2, laying the foundation for subsequent shock absorption function.

[0058] Two screws 11 have symmetrically formed limiting grooves 13 on their sidewalls. Two inner grooves 10 each have pressure strips 14 inside. Inner rods 15 are fixedly installed at the lower ends of both pressure strips 14. The two inner rods 15 are slidably installed in the two screws 11. Limiting blocks 16 are symmetrically fixedly installed on the sidewalls of the two inner rods 15. Two sets of limiting blocks 16 are slidably installed in the two sets of limiting grooves 13. Each set of limiting blocks 16 has a retaining groove 17. Threaded rings 18 are threaded onto both screws 11. The two threaded rings 18 are rotatably installed in the two sets of retaining grooves 17. The threaded rings 18 have the same diameter as the upper end of the screws 11. When the composite elastomer 9 is used for a long time, each vibration will cause the composite elastomer 9 to... After undergoing "compression-rebound" or "shear-reset" deformation, fatigue can lead to surface wear, internal cracking, and even local failure. This manifests as an increased gap between the composite elastomer 9 and the bracket 2, and a decrease in preload—directly resulting in a reduction in damping effect (increased vibration transmission rate) and a decrease in fixing reliability. At this point, the threaded ring 18 can be rotated on the screw 11. The rotation of the threaded ring 18 will drive the two limiting blocks 16 to move downward in the two limiting grooves 13 respectively. The two limiting blocks 16 will drive the inner rod 15 to move downward inside the screw 11. The inner rod 15 will then drive the pressure strip 14 to move downward inside the inner groove 10. At this time, the pressure strip 14 will squeeze the composite elastomer 9, keeping it in a tight position against the bracket 2, filling the gap caused by wear, restoring the initial preload and damping performance. The composite elastomer 9 can be restored without replacing it, solving the pain point of "wear equals scrap" in traditional elastic damping components.

[0059] The lower end of the interlocking control device 5 is provided with a sliding groove 19 and a strip groove 20. A connecting groove 21 is provided on the side wall of the interlocking control device 5. The connecting groove 21 passes through the strip groove 20 and connects with the sliding groove 19. Side strips 22 are symmetrically fixedly installed on the side wall of the interlocking control device 5. Rotating columns 23 are evenly and equidistantly installed inside the strip groove 20. A filter screen 24 is slidably installed inside the sliding groove 19. When the filter screen 24 is installed, it will block the gap between the two supports 2 and the interlocking control device 5, thereby effectively preventing external dust from entering the interior of the interlocking control device 5 through the heat dissipation channel during ball mill operation, protecting the electronic components inside the interlocking control device 5 from dust wear, and extending the equipment life. When in use, the filter screen 24 can be moved down and inserted into the slot 4. At this time, the protrusion 25 will move to the bottom end in the connecting groove 21. Because a composite elastomer 9 is provided between the support 2 and the interlocking control device 5, there will be a gap between the support 2 and the interlocking control device 5. This gap is a heat dissipation channel. The heat dissipation channel is a T-shaped structure consisting of a "transverse main channel + longitudinal branch channel". Under high-frequency vibration (10-50Hz in the inner groove), the vibration of the ball mill itself will drive the surrounding air to form a "turbulent airflow". Through the T-shaped channel, "forced convection" is achieved. External cold air enters from the transverse main channel, flows through the longitudinal branch to the internal heating area of ​​the device, and then carries heat out from the other end of the channel. The heat dissipation efficiency is higher. Moreover, the gap is formed by the composite elastomer 9. Its elastic deformation will produce a small "breathing effect" (periodic expansion / contraction of the gap) with the vibration, which further enhances the airflow exchange and avoids channel blockage caused by dust accumulation.

[0060] A protrusion 25 is fixedly installed on the side wall of the filter screen 24. The protrusion 25 is slidably installed in the connecting groove 21. A fixing strip 26 is fixedly installed inside the filter screen 24. Arc-shaped blocks 27 are evenly and equidistantly fixed on the side wall of the fixing strip 26. When the ball mill body 1 is operating, it will generate vibration, which will be transmitted to the connecting groove 21 and the side strip 22. The side strip 22 will vibrate accordingly. Therefore, under the vibration of the side strip 22, the rotating column 23 will deflect slightly. At this time, the rotating column 23 will contact the arc-shaped block 27. After the arc-shaped block 27 is subjected to the squeezing force, it will drive the filter screen 24 to vibrate slightly, thereby shaking off the dust adhering to the filter screen 24 and discharging it through the unloading chute 3. This design realizes cleaning while running, reduces maintenance time, and reduces production costs. It does not require additional energy consumption, and its advantages are particularly obvious in scenarios such as mines where energy costs are high and wiring / pipe laying is difficult.

[0061] A slide 28 is slidably mounted on the support frame of the ball mill body 1. A rubber buffer pad 29 is fixedly mounted on the side wall of the slide 28. When wiring is installed inside the interlock control device 5, a section can be reserved between the connecting wire and the rubber buffer pad 29. Then, the connecting wire is placed inside the wiring groove of the rubber buffer pad 29. Then, the protrusion 31 can be rotated on the connecting block 30. Under the rotation of the protrusion 31, the slide 28 will be squeezed. At this time, the slide 28 will be forced to move the rubber buffer pad 29 to the left. The rubber buffer pad 29 will squeeze the connecting wire onto the support frame of the ball mill body 1, completing the positioning of the connecting wire, making the wire harness neat and not messy. Moreover, through the support structure of the rubber buffer pad 29, the vibration transmission rate is reduced. Vibration energy is consumed through elastic deformation-recovery cycle, avoiding the breakage and loosening of solder joints of internal components (electronic components, terminals) due to high frequency vibration, and improving the stable operation capability of the interlock control device.

[0062] A connecting block 30 is fixedly installed on the side wall of the support frame of the ball mill body 1. A protruding post 31 is rotatably installed inside the connecting block 30. A positioning nut 32 is threaded on the protruding post 31. Metal spring pieces 33 are fixedly installed at equal intervals at the lower ends of the two side strips 22. Each rotating column 23 has a receiving groove 34 inside, and each metal spring piece 33 is respectively installed in each receiving groove 34.

[0063] Working principle:

[0064] The first step is to insert the two screws 11 on the interlocking control device 5 into the bracket 2, and then rotate the two fastening nuts 12 on the two screws 11 to complete the fixation. At this time, the interlocking control device 5 will be fixed to the bracket 2 through the two composite elastomers 9. Through the design of the two composite elastomers 9, under the high-frequency vibration of the ball mill (usually 10-50Hz in the inner groove), the vibration energy can be converted into the internal friction heat of rubber molecules (damping effect) through the cycle of elastic deformation-recovery, realizing the "consumption absorption" of vibration energy. By locking the fastening nuts 12, the composite elastomers 9 are in a slightly compressed state (preset deformation) during the installation stage, ensuring that they are in close contact with the contact surface of the bracket 2, laying the foundation for the subsequent shock absorption function.

[0065] The second step involves the composite elastomer 9 undergoing compression-rebound or shear-reset deformation with each vibration during long-term use. This can lead to surface wear, internal cracking, and even localized failure due to fatigue. This manifests as an increased gap between the composite elastomer 9 and the bracket 2, and a decrease in preload – directly resulting in reduced damping effect (increased vibration transmission rate) and decreased fixation reliability. In this case, the threaded ring 18 can be rotated on the screw 11. The rotation of the threaded ring 18 will cause the two limiting blocks 16 to move downward in the two limiting grooves 13. The two limiting blocks 16 will then cause the inner rod 15 to move downward inside the screw 11. The inner rod 15 will then cause the pressure strip 14 to move downward inside the inner groove 10. At this time, the pressure strip 14 will squeeze the composite elastomer 9, keeping it in a tight position against the bracket 2, filling the gap caused by wear, restoring the initial preload and damping performance. The composite elastomer 9 can be restored without replacement, solving the problem of "wear equals scrap" in traditional elastic damping components.

[0066] Thirdly, when in use, the filter screen 24 can be lowered and inserted into the slot 4. At this time, the protrusion 25 will move to the bottom in the connecting groove 21. Because a composite elastomer 9 is provided between the bracket 2 and the interlocking control device 5, there will be a gap between the bracket 2 and the interlocking control device 5. This gap is a heat dissipation channel. The heat dissipation channel as a whole forms a T-shaped structure of "horizontal main channel + longitudinal branch channel". Under high-frequency vibration (10-50Hz in the inner groove), the vibration of the ball mill itself will drive the surrounding air to form a "turbulent airflow". Through the T-shaped channel, "forced convection" is achieved. External cold air enters from the horizontal main channel, flows to the internal heating area of ​​the device through the longitudinal branch, and then carries heat out from the other end of the channel. The heat dissipation efficiency is higher. Moreover, the gap is formed by the composite elastomer 9. Its elastic deformation will produce a small "breathing effect" (periodic expansion / contraction of the gap) with the vibration, which further enhances the airflow exchange and avoids channel blockage caused by dust accumulation.

[0067] Fourth, after the filter screen 24 is installed, it will block the gap between the two brackets 2 and the interlocking control device 5, thereby effectively preventing external dust from entering the interlocking control device 5 through the heat dissipation channel during ball mill operation, protecting the electronic components inside the interlocking control device 5 from dust wear, and extending the equipment life.

[0068] Fifth, when the ball mill body 1 is in operation, it will generate vibration, which will be transmitted to the connecting groove 21 and the side bar 22. The side bar 22 will vibrate accordingly. Therefore, under the vibration of the side bar 22, the rotating column 23 will deflect slightly. At this time, the rotating column 23 will contact the arc block 27. After the arc block 27 is subjected to the squeezing force, it will drive the filter screen 24 to vibrate slightly, thereby shaking off the dust adhering to the filter screen 24 and discharging it through the discharge chute 3. This design realizes cleaning while running, reduces maintenance time, and lowers production costs. It does not require additional energy consumption, and its advantages are particularly obvious in scenarios such as mines where energy costs are high and wiring / piping is difficult.

[0069] Step 6: When installing wiring inside the interlock control device 5, a section can be reserved between the connecting wire and the rubber buffer pad 29. Then, the connecting wire is placed inside the wiring groove inside the rubber buffer pad 29. Then, the protrusion 31 on the connecting block 30 can be rotated. Under the rotation of the protrusion 31, the slide 28 will be squeezed. At this time, the slide 28 will be forced to move the rubber buffer pad 29 to the left. The rubber buffer pad 29 will squeeze the connecting wire onto the support frame of the ball mill body 1, completing the positioning of the connecting wire, making the wire harness neat and not messy. Moreover, through the support structure of the rubber buffer pad 29, the vibration transmission rate is reduced. Vibration energy is consumed through elastic deformation-recovery cycle, avoiding the breakage and loosening of solder joints of internal components (electronic components, terminals) due to high frequency vibration, thus improving the stable operation capability of the interlock control device.

[0070] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A ball mill interlocking control device for a grinding section in a mine, comprising a ball mill body (1), wherein a bracket (2) is fixedly installed on a support frame on one side of the ball mill body (1), characterized in that: The bracket (2) has unloading grooves (3) on both sides of the side wall, slots (4) are symmetrically opened at the upper end of the bracket (2), an interlocking control device (5) is provided on the bracket (2), a display screen (6) is provided on one side of the interlocking control device (5), and mounting grooves (7) are symmetrically opened at the lower end of the interlocking control device (5). The interlock control device (5) has a heat dissipation vent (8) at the center of its lower end, and both mounting slots (7) are equipped with fastening mechanisms. The fastening mechanism includes a composite elastomer (9), with two composite elastomers (9) respectively housed in two mounting slots (7). Each composite elastomer (9) has an inner groove (10) at its upper end, and a screw (11) is fixedly mounted at its lower end. The screw (11) has a structure that is thicker at the top and thinner at the bottom. A fastening nut (12) is threaded onto each of the two screws (11). Limiting grooves (13) are symmetrically formed on the side walls of each of the two screws (11). Each of the two inner grooves (10) contains a... Pressure strips (14), each with an inner rod (15) fixedly installed at its lower end. The two inner rods (15) are slidably installed in the two screws (11). Limiting blocks (16) are symmetrically fixedly installed on the side walls of the two inner rods (15). The two sets of limiting blocks (16) are slidably installed in the two sets of limiting grooves (13). The two sets of limiting blocks (16) are provided with slots (17). Threaded rings (18) are threadedly installed on the two screws (11). The two threaded rings (18) are rotatably installed in the two sets of slots (13). In the groove (17), the threaded ring (18) has the same diameter as the upper end of the screw (11). The lower end of the interlocking control device (5) is provided with a sliding groove (19) and a strip groove (20). A connecting groove (21) is provided on the side wall of the interlocking control device (5). The connecting groove (21) passes through the strip groove (20) and connects with the sliding groove (19). Side strips (22) are symmetrically fixedly installed on the side wall of the interlocking control device (5). Rotary columns (23) are evenly and equidistantly installed inside the strip groove (20). Sliding installations are installed inside the sliding groove (19). There is a filter screen (24), and a protrusion (25) is fixedly installed on the side wall of the filter screen (24). The protrusion (25) is slidably installed in the connecting groove (21). A fixing strip (26) is fixedly installed inside the filter screen (24). Arc-shaped blocks (27) are evenly and equidistantly fixedly installed on the side wall of the fixing strip (26). Metal spring pieces (33) are fixedly installed at equal intervals at the lower ends of the two side strips (22). Each rotating column (23) has a receiving groove (34) inside. Each metal spring piece (33) is respectively installed in each receiving groove (34).

2. The interlocking control device for a ball mill in a mining grinding section as described in claim 1, characterized in that, A slide (28) is slidably installed on the support frame of the ball mill body (1), and a rubber buffer pad (29) is fixedly installed on the side wall of the slide (28). Among them, a connecting block (30) is fixedly installed on the side wall of the support frame of the ball mill body (1), and a protruding post (31) is rotatably installed inside the connecting block (30), and a positioning nut (32) is threaded on the protruding post (31).

Images