Underground mine stope wireless communication base station protection device and control method

Abstract

The invention discloses an underground mine stope wireless communication base station protection device and a control method, and belongs to the technical field of underground mine stope base station protection, the underground mine stope wireless communication base station protection device comprises a transmission device, an underground protection box, a sliding impact-resistant door device, a base station and an antenna, the underground protection box is arranged in ore, the transmission device and the base station are arranged in the underground protection box, the transmission device is connected with the base station, and the sliding impact-resistant door device is connected with the antenna. And the transmission device is connected with the sliding impact-resistant door device and the antenna. The servo motor is remotely controlled by a programmable logic controller (PLC), the transmission device achieves synchronous opening (closing) of the sliding impact-resistant door and stretching (retracting) of the antenna through a mechanical structure, and it is guaranteed that the wireless communication base station is not affected by blasting. The protection device is applied to an underground mine stope, and a solid foundation is laid for unmanned, efficient and intelligent implementation of the underground stope.

Description

Technical Field

[0001] The present invention belongs to the technical field of underground mine site base station protection, and in particular relates to an underground mine site wireless communication base station protection device and a control method. Background Art

[0002] Mining is an important pillar industry of the national economy, and intelligent construction is a key measure to promote the safe development of mines and ensure the security of national energy resources. In recent years, my country's mine intelligent construction has developed rapidly and achieved remarkable results. However, there are still problems such as imbalance, insufficiency and disharmony in the development process. Therefore, it is necessary to establish a complete mine intelligent technology, equipment and management system to achieve the deep integration and shared application of mine data, promote the less-manned and unmanned mining operations, so as to effectively prevent and control major safety risks and significantly improve the inherent safety level of mines.

[0003] At present, most underground mines use traditional wired communication methods, which have limited coverage and difficult mobile connections. Wireless communication technology can realize real-time monitoring and data transmission, and provide flexible communication methods for intelligent equipment in the mine. This not only supports remote control and automated operation of equipment, but also significantly improves the overall efficiency of mine operations. However, due to the particularity of signal transmission of mine wireless communication base stations, the antenna lacks protection devices, resulting in unstable communication signals, and most wireless communication base stations in underground mines do not have sufficient safety and seismic resistance. Usually, these base stations are set up in the vein tunnels away from the blasting area, or they are manually moved away from the blasting area by underground workers before blasting and then returned to a safe position. This process is prone to cause information transmission delays, affecting the safety and efficiency of the mine, seriously reducing the safety of underground operations, and increasing downtime and maintenance costs caused by equipment damage. Therefore, it is particularly necessary to design a wireless communication base station protection device dedicated to underground mines. This device can ensure the stable operation of communication equipment in a blasting environment, thereby effectively improving the safety and efficiency of underground operations. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present invention proposes: a wireless communication base station protection device for an underground mine, comprising a transmission device, an underground protection box, a sliding anti-impact door device, a base station, and an antenna. An underground protection box is set in the ore, and a transmission device and a base station are set in the underground protection box. The transmission device is connected to the base station, and the transmission device is connected to the sliding anti-impact door device and the antenna.

[0005] Further, the transmission device includes an intelligent servo drive motor, a main drive shaft, a main drive gear, a main drive spiral bevel gear, a secondary drive spiral bevel gear, a secondary drive shaft, a rotating arm, a door main drive gear, a door drive shaft and a door drive gear; the intelligent servo drive motor is arranged on a servo motor fixing bracket;

[0006] The intelligent servo drive motor is connected to the main drive gear, the main drive gear is meshed with the door main drive gear, the door main drive gear is connected to the door drive gear through the door drive shaft, and the door drive gear is connected to the sliding impact-resistant door device;

[0007] The intelligent servo drive motor is connected to the main transmission shaft, the main transmission shaft is connected to the main drive spiral bevel gear, the main drive spiral bevel gear is meshed with the auxiliary drive spiral bevel gear, the shaft angle between the main drive spiral bevel gear and the auxiliary drive spiral bevel gear is 90 degrees, the auxiliary drive spiral bevel gear is fixed on the auxiliary transmission shaft, the rotating arm is vertically fixed on the auxiliary transmission shaft, the auxiliary transmission shaft moves perpendicular to the horizontal plane, and the rotating arm swings on the horizontal plane, the antenna is fixed on the outside of the rotating arm, and moves on the horizontal plane with the rotation of the rotating arm.

[0008] Furthermore, the sliding impact-resistant door device includes: a door drive rack, an impact-resistant door, steel balls, an impact-resistant door sealed sliding guide groove, a slotted impact-resistant door sealed sliding guide groove is provided at the bottom, steel balls are laid on the impact-resistant door sealed sliding guide groove, the impact-resistant door is arranged on the steel balls, the door drive gear is connected to the door drive rack of the sliding impact-resistant door device, and the door drive rack is fixedly arranged on the impact-resistant door.

[0009] Furthermore, in the transmission device, the main drive shaft, the auxiliary drive shaft and the door drive shaft are all matched with clamping type bearings. The inner ring of the bearing bears a rotating load, and the outer ring bears a static load. The outer ring of the clamping type bearing is firmly fixed to the bearing fixing bracket to bear axial and radial loads. The positioning and movement control of the shaft are achieved through the fixing effect of the bearing fixing bracket.

[0010] A control method for a wireless communication base station protection device in an underground mine. The motion model of the antenna and the impact-resistant door is as follows: the distance between the auxiliary transmission shaft and the impact-resistant door is x1 (mm), the distance between the auxiliary transmission shaft and the underground protection box is x2 (mm), the length of the rotating arm is r (mm), the length of the underground protection box is H (mm), and the pitch circle diameter d of the door drive gear 1-10 (mm), the included angle θ between the rotating arm and the impact-resistant door surface (degrees);

[0011] Assuming the motor speed is nr / s, the gear ratio of the main drive spiral bevel gear and the auxiliary drive spiral bevel gear can be obtained according to the following formula, and the movement of the base station antenna is controlled by the drive of the gears;

[0012] w 1-3 =w 1-4 =2·π·n; w 1-5 =w 天线 ;

[0013] According to the transmission ratio:

[0014]

[0015] The meaning of symbols in the formula:

[0016] Furthermore, the motion model of the impact-resistant door is the same as the angular velocity of the gear on the transmission shaft. The transmission ratio of the main drive gear and the door main drive gear can be deduced from the above-mentioned antenna and impact-resistant door motion model, as shown in the following formula:

[0017] w 1-10 =w 1-8 ;

[0018] w 1-3 =w 1-4 =2·π·n;

[0019]

[0020] w 1-10 : angular velocity of the door drive gear, rad / s

[0021] w 1-8 : Angular velocity of the main drive gear, rad / s

[0022] z 1-3 : Number of teeth on the door drive gear

[0023] z 1-8 : Number of teeth of the main door drive gear

[0024] n 1-10 : Speed ​​of door drive gear

[0025] d 1-10 : Pitch circle diameter of door drive gear, mm

[0026] Symbol meaning: v 门 : Impact-resistant door line speed.

[0027] Furthermore, it can be ensured that the base station antenna does not collide with the impact-resistant door during rotation:

[0028]

[0029] Satisfies: H-x2-r·cosθ<v 门 t;

[0030] Meaning of symbols in the formula: t: Transmission device movement time

[0031] At this stage, when the rotating arm rotates to the downhole protection box position, the impact-resistant door has slid past the current position, ensuring that its sliding distance is sufficient to meet the requirement that the antenna continues to swing outward.

[0032] Furthermore, it can be ensured that the impact-resistant door can be fully opened after the antenna is aligned:

[0033] satisfy:

[0034] At this stage, the rotating arm has been fully aligned and the sliding movement of the impact-resistant door has stopped. The sliding distance exceeds the length of the downhole protection box, thus ensuring that the impact-resistant door can be fully opened after the antenna is aligned.

[0035] The beneficial effects of the present invention are:

[0036] The present invention provides a wireless communication base station protection device for underground mines. The device is remotely controlled by a programmable logic controller (PLC) to realize intelligent retraction of the wireless communication base station antenna and closing of the sliding anti-impact door before blasting in the underground mine, and automatically complete the opening of the sliding anti-impact door and extension of the antenna after blasting. At the same time, the device can comprehensively collect and transmit underground equipment and environmental data, realize accurate control and real-time monitoring of the equipment, and thus promote the unmanned and intelligent process of underground mine operations. This design effectively ensures the stable operation of communication equipment in extreme environments and improves the safety and efficiency of mine operations.

[0037] This invention can effectively protect the wireless communication base station in underground mines, ensure the safety of underground workers and smooth communication, and significantly improve the safety of the equipment. At the same time, the device provides a wider signal coverage, supports more efficient information exchange and monitoring, and is suitable for small space design. Its fully mechanical automation design makes the conversion of transmission direction and the adjustment of transmission speed relatively flexible and free. This design not only improves the reliability and adaptability of the system, but also lays the foundation for the intelligent and unmanned operation of mining operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the structure of the wireless communication base station protection device for an underground mine site of the present invention;

[0039] Figure 2 It is a schematic diagram of the transmission structure of the present invention;

[0040] Figure 3 This is a schematic structural diagram of a sliding impact-resistant door device according to the present invention;

[0041] Figure 4 It is a structural schematic diagram of the wireless communication base station protection device for underground mines in a closed state according to the present invention;

[0042] Figure 5 This is a structural schematic diagram of the wireless communication base station protection device for an underground mine in an open state according to the present invention;

[0043] Figure 6It is a schematic structural diagram of the underground mine wireless communication base station protection device in the initial state of the present invention.

[0044] 1. Transmission device, 2. Underground protection box, 3. Sliding anti-impact door device, 4. Base station, 5. Antenna, 6. Ore; 1-1. Intelligent servo drive motor, 1-2. Main transmission shaft, 1-3. Main drive gear, 1-4. Main drive spiral bevel gear, 1-5. Auxiliary drive spiral bevel gear, 1-6. Auxiliary transmission shaft, 1-7. Rotating arm, 1-8. Door main drive gear, 1-9. Door drive shaft, 1-10. Door drive gear, 1-11. Clamp-type bearing, 1-12. Fixed bracket with bearing, 1-13. Servo motor fixed bracket; 3-1. Door drive rack, 3-2. Anti-impact door, 3-3. Steel balls, 3-4. Anti-impact door sealing sliding guide groove. DETAILED DESCRIPTION

[0045] Example 1

[0046] In order to make the technical means and objectives of the present invention easy to understand, the present invention is further described below in combination with specific embodiments. A wireless communication base station protection device for underground mines, such as Figure 1 As shown, it includes a transmission device 1, an underground protection box 2, a sliding anti-impact door device 3, a base station 4, and an antenna 5. The underground protection box 2 is set in the ore 6, and the transmission device 1 and the base station 4 are set in the underground protection box 2. The transmission device 1 is connected to the base station 4, and the transmission device 1 is connected to the sliding anti-impact door device 3 and the antenna 5.

[0047] like Figure 2 As shown, the transmission device 1 includes an intelligent servo drive motor 1-1, a main drive shaft 1-2, a main drive gear 1-3, a main drive spiral bevel gear 1-4, an auxiliary drive spiral bevel gear 1-5, an auxiliary drive shaft 1-6, a rotating arm 1-7, a door main drive gear 1-8, a door drive shaft 1-9 and a door drive gear 1-10; the intelligent servo drive motor 1-1 is arranged on a servo motor fixing bracket 1-13;

[0048] In the blasting preparation stage, the operation of the servo motor is controlled by the PLC remote program, driving the main transmission shaft 1-2 connected to the motor to rotate, thereby driving the main drive spiral bevel gear 1-4 to rotate. The main drive spiral bevel gear 1-4 and the auxiliary drive spiral bevel gear 1-5 are meshed with each other, driving the auxiliary drive spiral bevel gear 1-5 to rotate. The antenna 5 is fixed to the outer end of the rotating arm 1-7, and the inner side of the rotating arm 1-7 is fixedly connected to the auxiliary transmission shaft 1-6. The rotation of the auxiliary transmission shaft 1-6 causes the antenna 5 to swing horizontally into the underground protection box 2.

[0049] At the same time, the operation of the servo motor drives the main drive gear 1-3 to rotate, and the main drive gear 1-3 rotates and meshes with the main door drive gear 1-8, thereby driving the door drive shaft 1-9 to rotate. The door drive gear 1-10 is fixed on the outside of the door drive shaft 1-9, and the door drive gear 1-0 is always in meshing with the door drive rack 3-1 of the impact-resistant door 3, driving the impact-resistant door 3 to slide smoothly in the guide groove. The upper guide groove of the impact-resistant door is sealed, and steel balls are added between the lower guide groove and the impact-resistant door to withstand part of the pressure and impact force, reduce the friction between the components, and the bottom of the lower guide groove is provided with an opening to facilitate the cleaning of underground dust. After the blasting, the servo motor is controlled by the PLC remote program to rotate in the opposite direction, open the impact-resistant door, and extend the antenna at the same time. The design of this device not only improves the automation and reliability of the system, but also realizes the precise control and real-time monitoring of underground equipment, thereby achieving the purpose of unmanned and intelligent underground mine operations.

[0050] like Figure 3-Figure 5 As shown, the sliding anti-impact door device 3 includes: a door drive rack 3-1, an impact-resistant door 3-2, a steel ball 3-3, an impact-resistant door sealing sliding guide groove 3-4, a slotted impact-resistant door sealing sliding guide groove 3-4 is arranged at the bottom, steel balls 3-3 are laid on the impact-resistant door sealing sliding guide groove 3-4, the impact-resistant door 3-2 is arranged on the steel balls 3-3, the door drive gear 1-10 is connected to the door drive rack 3-1 of the sliding anti-impact door device 3, and the door drive rack 3-1 is fixedly arranged on the impact-resistant door 3-2.

[0051] For the above-mentioned transmission device, before blasting in the underground mine, the staff remotely controls the forward and reverse rotation of the servo motor through the PLC. The servo motor drives the main transmission shaft 1-2 to rotate, and the main transmission shaft 1-2-in turn drives the main drive spiral bevel gear 1-4 to rotate. The main drive spiral bevel gear 1-4 is meshed with the auxiliary drive spiral bevel gear 1-5, and the auxiliary drive spiral bevel gear 1-5 rotates accordingly, driving the auxiliary drive shaft 1-6 to move. The rotating arm 1-7 is fixed at the lower end of the auxiliary drive shaft 1-6, and the antenna 5 is connected to the rotating arm 1-7, and swings horizontally with the rotation of the rotating arm 1-7, thereby expanding the signal coverage range and enhancing the stability of the communication chain. At the same time, the main drive gear 1-3 drives the main door drive gear 1-8 to rotate, and further drives the door drive shaft 1-9 and the door drive gear 1-10 to rotate. The door drive gear 1-10 is meshed with the door drive rack 3-1 of the impact-resistant door 3 to ensure that the impact-resistant door slides smoothly in the guide groove. The upper guide groove is sealed, and steel balls are placed between the impact-resistant door 3 and the lower guide groove 3-4 as support to reduce friction in the moving project, which is conducive to smoother movement of the impact-resistant door, matching the antenna swing speed, and realizing synchronous coordinated control.

[0052] Under the remote control of PLC, the transmission device is driven by an intelligent servo motor. The intelligent servo motor rotates by driving the main drive gear and the main transmission shaft. The main drive gear meshes with the main drive gear of the door, thereby driving the main drive gear of the door to rotate, and then driving the door drive shaft and the door drive gear to rotate. At the same time, the main transmission shaft also drives the main drive spiral bevel gear to rotate. Since the main drive spiral bevel gear meshes with the auxiliary drive spiral bevel gear, the auxiliary drive spiral bevel gear rotates accordingly. The shaft angle between the main drive spiral bevel gear and the auxiliary drive spiral bevel gear is 90 degrees, which not only realizes power transmission but also changes the direction of movement. The auxiliary drive spiral bevel gear is fixed on the auxiliary drive shaft, and the rotating arm is vertically fixed on the auxiliary drive shaft. The auxiliary drive shaft moves perpendicular to the horizontal plane, while the rotating arm moves on the horizontal plane. The base station antenna is fixed on the outside of the rotating arm and swings on the horizontal plane with the rotation of the rotating arm. This design not only simplifies the mechanical structure and improves the flexibility and reliability of the system, but also optimizes the coverage and signal quality of wireless communication.

[0053] Driven by the transmission device, the rack on the impact-resistant door always maintains precise meshing with the door drive gear. The rotational motion of the door drive gear is transmitted through the rack, driving the impact-resistant door to slide smoothly in the guide groove. The sliding direction is consistent with the swing of the rotating arm, ensuring that the sliding speed of the impact-resistant door matches the swing speed of the antenna, thereby achieving synchronous and coordinated control. This design not only improves the reliability of the system, but also enhances the adaptability of the impact-resistant door under complex working conditions. In addition, the design optimizes the power transmission efficiency of the impact-resistant door, ensuring that it can operate efficiently and stably in the complex environment underground. In practical applications, this innovative design is expected to greatly improve the protection performance of wireless communication base stations and ensure the stability and safety of communication equipment in extreme environments.

[0054] In the transmission device, the main transmission shaft, auxiliary transmission shaft and door drive shaft are all equipped with clamping bearings. The inner ring of the bearing is responsible for rotation, while the outer ring remains stationary. The positioning and movement control of the shaft are achieved through the fixing effect of the bearing. This design ensures the stability and reliability of each shaft during operation, thereby improving the performance and durability of the entire transmission system.

[0055] Example 2

[0056] The purpose of the present invention is to provide a wireless communication base station protection device for underground mines. The device is remotely controlled by a programmable logic controller (PLC) to realize intelligent retraction of the wireless communication base station antenna and closing of the sliding anti-impact door before blasting in the underground mine, and automatically open the sliding anti-impact door and extend the antenna after blasting. At the same time, the device can comprehensively collect and transmit underground equipment and environmental data, realize accurate control and real-time monitoring of the equipment, and thus promote the unmanned and intelligent process of underground mine operations. This design effectively ensures the stable operation of communication equipment in extreme environments and improves the safety and efficiency of mine operations.

[0057] The control method of the wireless communication base station protection device of the underground mine field of the present invention can automatically cooperate with the needs of the underground mine blasting process and operate independently.

[0058] The principle motion relationship between the antenna and the impact-resistant door is as follows: the distance between the auxiliary transmission shaft and the impact-resistant door is x1 (mm), the distance between the auxiliary transmission shaft and the underground protection box is x2 (mm), the length of the antenna rotating arm is r (mm), the length of the underground protection box is H (mm), and the pitch circle diameter of the door drive gear is d 1-10 mm, the included angle θ (degrees) between the antenna rotating arm and the impact-resistant door surface.

[0059] Base station antenna: Assume that the motor speed is nr / s. At this time, the gear ratio of the main and auxiliary drive spiral bevel gears can be obtained according to the following formula, and the movement of the base station antenna can be controlled by the drive of the gears.

[0060] w 1-3 =w 1-4 =2·π·n; w 1-5 =w 天线 ;

[0061] According to the transmission ratio:

[0062]

[0063] w 1-3 : Angular velocity of the main drive gear

[0064] w 1-4 : Angular velocity of the main drive spiral bevel gear

[0065] w 1-5 : Angular velocity of the secondary drive spiral bevel gear

[0066] n: The speed of the servo motor

[0067] z 1-4 : Number of teeth of main drive spiral bevel gear

[0068] z 1-5: Number of teeth of the auxiliary drive spiral bevel gear

[0069] Meaning of symbols in the formula: w 天线 : angular velocity of antenna rotation, rad / s

[0070] Impact-resistant door: The angular velocity of the gear on the same transmission shaft is the same. The transmission ratio of the main drive gear and the door main drive gear can be deduced from the above-mentioned motion relationship between the antenna and the impact-resistant door, as shown in the following formula:

[0071] w 1-10 =w 1-8 ;

[0072] w 1-3 =w 1-4 =2·π·n;

[0073]

[0074] w 1-10 : Angular velocity of the door drive gear

[0075] w 1-8 : Angular velocity of the main door drive gear

[0076] z 1-3 : Number of teeth on the door drive gear

[0077] z 1-8 : Number of teeth of the main door drive gear

[0078] n 1-10 : Speed ​​of door drive gear

[0079] d 1-10 : Pitch circle diameter of door drive gear

[0080] Symbol meaning: v 门 : Impact-resistant door line speed

[0081] The present invention can ensure that the base station antenna does not collide with the impact-resistant door during rotation:

[0082]

[0083] Satisfies: H-x2-r·cosθ<v 门 t;

[0084] Meaning of symbols in the formula: t: Transmission device movement time

[0085] At this stage, when the antenna rotating arm rotates to the underground protection box position, the impact-resistant door has slid past the current position, ensuring that its sliding distance is sufficient to meet the requirements of the antenna continuing to swing out. This design not only ensures the smooth swing of the antenna, but also effectively prevents possible mechanical interference and impact damage during the swing process, thereby improving the overall stability and reliability of the system.

[0086] The present invention can ensure that the impact-resistant door can be fully opened after the antenna is aligned:

[0087] satisfy:

[0088] At this stage, the antenna rotating arm has been fully aligned, and the sliding movement of the impact-resistant door has stopped. The sliding distance exceeds the length of the underground protection box, thus ensuring that the impact-resistant door can be fully opened after the antenna is aligned. This design improves the stability and reliability of the system and effectively facilitates subsequent installation and maintenance.

[0089] Example 3

[0090] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be described clearly and completely in combination with the accompanying drawings of the present invention. A wireless communication base station protection device for underground mines of the present invention comprises: a transmission device 1, an underground protection box 2, a sliding anti-impact door device 3, a base station 4, and an antenna 5. The transmission device comprises: an intelligent servo drive motor 1-1, a main transmission shaft 1-2, a main drive gear 1-3, a main drive spiral bevel gear 1-4, a secondary drive spiral bevel gear 1-5, a secondary drive shaft 1-6, a rotating arm 1-7, a main door drive gear 1-8, a door drive shaft 1-9, a door drive gear 1-10, a clamping bearing 1-11, a bearing fixing bracket 1-12, and a servo motor fixing bracket 1-13. The sliding anti-impact door device comprises: a door drive rack 3-1, an anti-impact door 3-2, a steel ball 3-3, and an anti-impact door sealing sliding guide groove 3-4. At the same time, a PLC control box should be set up at the work site, and the equipment cables on site enter the PLC control box for overall control.

[0091] The underground protection box 2 and the sliding anti-impact door device 3 are installed in the underground tunnel by fixed hoisting. The base station 4 and the intelligent servo motor 1-1 are located in the underground protection box 2, the transmission device 1 is driven by the intelligent servo motor 1-1, and the antenna 5 is fixed on the rotating arm 1-7 in the transmission device 1.

[0092] In the blasting preparation stage, the rotation of the intelligent servo motor 1-1 is controlled by the PLC remote program, driving the main transmission shaft 1-2 connected to the servo motor 1-1 to rotate, thereby driving the rotation of the main drive spiral bevel gear 1-4. The main drive spiral bevel gear 1-4 is meshed with the auxiliary drive spiral bevel gear 1-5, driving the auxiliary drive spiral bevel gear 1-5 to rotate synchronously, thereby driving the rotation of the auxiliary drive shaft 1-6. The antenna 5 is fixedly connected to the outer end of the rotating arm 1-7, and the inner side of the rotating arm 1-7 is fixedly connected to the auxiliary drive shaft 1-6. As the auxiliary drive shaft 1-6 rotates, the antenna 5 swings horizontally to the underground protection box 2 for protection.

[0093] At the same time, the rotation of the intelligent servo motor 1-1 drives the main drive gear 1-3 to rotate, and meshes with the door main drive gear 1-8, driving the door main drive gear 1-8 to rotate. The door main drive gear 1-8 is fixed on the door drive shaft 1-9, and the door drive shaft 1-9 rotates with the door main drive gear 1-8. The door drive gear 1-10 is fixed on the outside of the door drive shaft 1-9. The door drive gear 1-10 meshes with the door drive rack 3-1 of the impact-resistant door 3-2, and the door drive rack 3-1 is fixed on the inside of the impact-resistant door 3-2. The rotation of the door drive gear 1-10 drives the door drive rack 3-1 to move, driving the impact-resistant door 3-2 to slide smoothly in the guide groove 3-4, thereby closing the underground protection box 2, so as to ensure that the equipment can operate stably even in a blasting environment, ensure the stability and reliability of underground communication, and improve the safety and efficiency of mine operations.

[0094] The main transmission shaft 1-2, auxiliary transmission shaft 1-6, door drive shaft 1-9 in the transmission device 1 cooperate with the clamping bearing 1-11, the inner ring rotates with the load, the outer ring is static with the load, the outer ring of the bearing is firmly fixed to the bearing fixing bracket 1-12, and bears axial and radial loads to ensure the long-term stable operation of the bearing.

[0095] The upper guide groove of the impact-resistant door 3-2 is sealed, and the bottom of the lower guide groove 3-4 is designed with an opening. A steel ball 3-3 is placed between the guide groove and the impact-resistant door 3-2. The steel ball 3-3 bears part of the pressure and impact force, reduces the friction between the components, and makes the impact-resistant door 3-2 move more smoothly on the guide groove 3-4, and is easy to clean and lubricate. After the underground blasting is completed, the staff controls the intelligent servo motor 1-1 to reverse through the PLC remote program, and the transmission device 1 repeats the above operation. The mechanical movement is the same but in the opposite direction, thereby opening the impact-resistant door 3-2 and extending the antenna 5, enhancing the underground signal coverage, facilitating the comprehensive collection and transmission of underground equipment and environmental data, using intelligent equipment instead of manual labor, and expanding the underground intelligent application scenarios. In the process of the protection device starting to open the impact-resistant door, ensure the synchronization and coordination of the sliding of the impact-resistant door and the rotation of the base station antenna. Finally, when the antenna reaches the specified position, the impact-resistant door stops sliding.

[0096] Implementation specific data:

[0097] H=600mm, x1=150mm, x2=100mm, r=350mm, d 1-10 =60mm.

[0098]

[0099] Satisfies: H-x2-r·cosθ<v 门 t

[0100]

[0101] in conclusion:

[0102] satisfy:

[0103] in conclusion:

[0104] At this time, z 1-3 / z 1-8 =3.54, z 1-5 / z 1-4 =4, n = 0.5rad / s, then the opening time of the antenna is 2s, and the initial position of the antenna is as shown in the attached figure. Figure 6 As shown in the figure, the design of the underground protection box fully considers the swing trajectory of the antenna to ensure that no collision occurs during the movement of the antenna. At this time, the sliding distance of the impact-resistant door is about 667mm, and it can be fully opened, which provides convenience for subsequent installation and maintenance.

[0105] Introduction to related main hardware functions:

[0106] 1. Forward and reverse servo motor: when powered on, the motor can rotate forward and reverse to drive the transmission device to move;

[0107] 2. PLC control box: The forward and reverse servo motors of on-site equipment can be controlled through the PLC control box.

[0108] 3. Antenna: Provides effective energy conversion, enhances downhole signal quality, and increases downhole communication range.

[0109] 4. Base station: ensures the quality of underground communication, provides underground communication coverage, and provides a high-speed and stable channel for data transmission between underground equipment and the network.

[0110] 5. Steel balls: The steel balls roll in the guide grooves, which can significantly reduce the friction of the sliding impact-resistant doors during movement, allowing them to slide easily, extending the service life of the sliding impact-resistant doors. At the same time, it provides a stable support point to reduce the jamming and loosening of the sliding impact-resistant doors.

[0111] 6. Transmission device: It is composed of bearings, transmission shafts, gears, rotating arms and bearing fixing brackets. The transmission shaft is supported by bearings, and the transmission shaft transmits torque and gear movement. The gears transmit power and change the direction of movement through meshing. The rotating arm connects the transmission shaft and the antenna to change the direction of movement of the antenna.

[0112] 7. Impact-resistant door: A protection device and method for wireless communication base stations in underground mines. It is driven by a transmission device and slides in a guide groove to effectively protect the safety of underground protection equipment.

[0113] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wireless communication base station protection device for an underground mine, characterized in that: The invention comprises a transmission device (1), an underground protection box (2), a sliding anti-impact door device (3), a base station (4), and an antenna (5). The underground protection box (2) is arranged in the ore (6), the transmission device (1) and the base station (4) are arranged in the underground protection box (2), the transmission device (1) is connected to the base station (4), and the transmission device (1) is connected to the sliding anti-impact door device (3) and the antenna (5).

2. The wireless communication base station protection device for underground mines according to claim 1 is characterized in that: The transmission device (1) comprises an intelligent servo drive motor (1-1), a main transmission shaft (1-2), a main drive gear (1-3), a main drive spiral bevel gear (1-4), a secondary drive spiral bevel gear (1-5), a secondary drive shaft (1-6), a rotating arm (1-7), a main door drive gear (1-8), a door drive shaft (1-9) and a door drive gear (1-10); the intelligent servo drive motor (1-1) is arranged on a servo motor fixing bracket (1-13); The intelligent servo drive motor (1-1) is connected to the main drive gear (1-3), the main drive gear (1-3) is meshed with the door main drive gear (1-8), the door main drive gear (1-8) is connected to the door drive gear (1-10) through the door drive shaft (1-9), and the door drive gear (1-10) is connected to the sliding anti-impact door device (3); The intelligent servo drive motor (1-1) is connected to a main transmission shaft (1-2), the main transmission shaft (1-2) is connected to a main drive spiral bevel gear (1-4), the main drive spiral bevel gear (1-4) is meshed with a secondary drive spiral bevel gear (1-5), the shaft angle between the main drive spiral bevel gear (1-4) and the secondary drive spiral bevel gear (1-5) is 90 degrees, the secondary drive spiral bevel gear (1-5) is fixed on the secondary transmission shaft (1-6), the rotating arm (1-7) is vertically fixed on the secondary transmission shaft (1-6), the secondary transmission shaft (1-6) moves vertically to a horizontal plane, and the rotating arm (1-7) swings on the horizontal plane, and the antenna (5) is fixed on the outer side of the rotating arm (1-7) and moves on the horizontal plane with the rotation of the rotating arm (1-7).

3. The wireless communication base station protection device for underground mines according to claim 2 is characterized in that: The sliding anti-impact door device (3) comprises: a door drive rack (3-1), an anti-impact door (3-2), a steel ball (3-3), and an anti-impact door sealing sliding guide groove (3-4); a grooved anti-impact door sealing sliding guide groove (3-4) is provided at the bottom; a steel ball (3-3) is laid on the anti-impact door sealing sliding guide groove (3-4); the anti-impact door (3-2) is arranged on the steel ball (3-3); a door drive gear (1-10) is connected to the door drive rack (3-1) of the sliding anti-impact door device (3); and the door drive rack (3-1) is fixedly arranged on the anti-impact door (3-2).

4. The wireless communication base station protection device for underground mines according to claim 2 is characterized in that: In the transmission device (1), the main transmission shaft (1-2), the auxiliary transmission shaft (1-6) and the door drive shaft (1-9) are all matched with a clamping bearing (1-11), the inner ring of the bearing is subjected to a rotational load, and the outer ring is subjected to a static load. The outer ring of the clamping bearing (1-11) is firmly fixed to the bearing fixing bracket (1-12) to bear axial and radial loads. The fixing effect of the bearing fixing bracket (1-12) realizes the positioning and movement control of the shaft.

5. A control method for a wireless communication base station protection device for an underground mine according to claim 1, characterized in that: The motion model of the antenna (5) and the impact-resistant door (3-2) is as follows: the distance between the auxiliary transmission shaft (1-6) and the impact-resistant door (3-2) is x1 (mm), the distance between the auxiliary transmission shaft (1-6) and the downhole protection box (2) is x2 (mm), the length of the rotating arm (1-7) is r (mm), the length of the downhole protection box (2) is H (mm), and the pitch circle diameter d of the door driving gear (1-10) is 1-10 (mm), the included angle θ between the rotating arm and the impact-resistant door surface (degrees); Assuming that the speed of the motor is n (r / s), the gear ratio of the main drive spiral bevel gear (1-4) and the auxiliary drive spiral bevel gear (1-5) can be obtained according to the following formula, and the movement of the base station antenna (5) is controlled by driving the gears; w 1-3 =w 1-4 =2·π·n;w 1-5 =w 天线 ; According to the transmission ratio: The meaning of symbols in the formula:

6. The control method of the wireless communication base station protection device for an underground mine according to claim 5, characterized in that: The motion model of the impact-resistant door (3-2): The gear angular velocity on the same transmission shaft is the same. The transmission ratio of the main drive gear (1-3) and the door main drive gear (1-8) can be deduced from the above-mentioned motion model of the antenna (5) and the impact-resistant door (3-2), as shown in the following formula: In 1-10 =in 1-8 ; w 1-3 =w 1-4 =2·π·n; w 1-10 : angular velocity of the door drive gear, rad / s w 1-8 : Angular velocity of the main drive gear, rad / s z 1-3 : Number of teeth on the door drive gear z 1-8 : Number of teeth of the main door drive gear n 1-10 : Speed ​​of door drive gear d 1-10 : Pitch circle diameter of door drive gear, mm Symbol meaning: v 门 : Impact-resistant door line speed.

7. The control method of the wireless communication base station protection device in an underground mine according to claim 6 is characterized in that: It can be ensured that the base station antenna (5) does not collide with the impact-resistant door (3-2) during the rotation process: Satisfies: H-x2-r·cosθ<v 门 t; Meaning of symbols in the formula: t: Transmission device movement time At this stage, when the rotating arm (1-7) rotates to the position of the underground protection box (2), the impact-resistant door (3-2) has slid past the current position, ensuring that its sliding distance is sufficient to meet the requirement that the antenna (5) continues to swing outward.

8. The control method of the wireless communication base station protection device for an underground mine according to claim 7, characterized in that: It can be ensured that the impact-resistant door (3-2) can be fully opened after the antenna (5) is aligned: satisfy: At this stage, the rotating arm (1-7) has been fully aligned, and the sliding movement of the impact-resistant door (3-2) has stopped, and the sliding distance exceeds the length of the downhole protection box (2), thereby ensuring that the impact-resistant door (3-2) can be fully opened after the antenna (5) is aligned.

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