Anti-electromagnetic interference shielding device for coal mine electromechanical equipment

Abstract

The utility model relates to the technical field of electromagnetic shielding, in particular to an anti-electromagnetic interference shielding device for coal mine electromechanical equipment, which comprises a support, the support comprises a C-shaped beam, a shielding cover is mounted in the C-shaped beam, the shielding cover comprises a first barrel shell and a second barrel shell which can be spliced and fixed into a cylindrical barrel shell, and the first barrel shell and the second barrel shell are arranged in the support. A plurality of pin shafts are annularly fixed to the outer side of the shielding cover at equal angles, arc-shaped plates are detachably clamped and fixed to the outer sides of the pin shafts, and two magnetic induction sensors are embedded and fixed to the fixed outer side of the first barrel shell. According to the utility model, the magnetic induction sensor is installed on the shielding cover, and the driving assembly can drive the shielding cover to rotate, so that the magnetic induction sensor can detect the electromagnetic intensity of the peripheral side of the electromechanical equipment, and the heat dissipation assembly can be transferred to a position with weaker electromagnetism according to the detected electromagnetic intensity result; electromagnetic waves are effectively prevented from interfering with equipment work through pipelines of the heat dissipation assembly.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic shielding technology, specifically an anti-electromagnetic interference shielding device for coal mine electromechanical equipment. Background Technology

[0002] Mining inverter welding machines and mining composite chargers, among other mining electromechanical equipment, are frequently relocated to meet changing operational needs. The layout and environment of this equipment can affect the intensity of electromagnetic interference (EMI). For example, a mining inverter welding machine can generate high-frequency EMI on other nearby equipment during operation. If the machine is installed near high-voltage cables or other large electrical equipment, their electromagnetic fields can also interfere with the inverter's field. Therefore, a metal shield is typically designed to enclose the outside of the equipment. This shield effectively resists internal and external EMI by reflecting, absorbing, and guiding electromagnetic waves.

[0003] To prevent the relatively sealed metal enclosure from affecting heat dissipation, ventilation holes are reserved on the outside of the metal enclosure. However, most electromagnetic interference shielding devices cannot easily detect the strength of the surrounding electromagnetic field, so the ventilation holes are placed in areas with weak electromagnetic fields. If the ventilation holes are placed in areas with strong electromagnetic fields, electromagnetic waves will interfere with the use of the equipment through the ventilation holes. Furthermore, most electromagnetic interference shielding devices should not focus on strengthening protective measures to resist electromagnetic interference in areas with strong electromagnetic waves outside the equipment. Utility Model Content

[0004] The purpose of this invention is to provide an anti-electromagnetic interference shielding device for coal mine electromechanical equipment, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An electromagnetic interference shielding device for coal mine electromechanical equipment includes:

[0007] The support includes an I-beam;

[0008] A shielding cover is installed inside the bracket. The shielding cover includes two cylindrical shells, Shell 1 and Shell 2, which can be spliced ​​together to form a cylindrical shell. Multiple pins are evenly fixed on the outer side of the shielding cover, and an arc-shaped plate is detachably snapped onto the outer side of each pin.

[0009] Two magnetic induction sensors are fixed to the cylindrical shell. The two magnetic induction sensors are used to detect the electromagnetic intensity inside and outside the shielding cover, respectively.

[0010] A drive assembly is arranged on the top of the C-shaped beam. The drive assembly includes a motor, and the output end of the motor is connected to a drive shaft capable of driving the cylindrical shell to rotate.

[0011] There are two support components, which are fixed at both ends of the C-shaped beam. Each support component includes a threaded tube, and one end of the threaded tube is screwed to a screw for supporting the shield.

[0012] Furthermore, two studs are fixed on the top surface of both the first and second cylindrical shells, and a connecting plate is sleeved and fixed between two adjacent studs.

[0013] Furthermore, two heat dissipation components are arranged in a connected manner on the outer side of the first cylindrical shell. The heat dissipation components include pipes embedded and fixed to the first cylindrical shell, and fan blades are rotatably connected inside the pipes.

[0014] Furthermore, a tube seat is fixed to the top surface of the first cylindrical shell, and a hexagonal shaft that is inserted into the tube seat for transmission is fixed to the bottom of the transmission shaft.

[0015] Furthermore, the drive assembly also includes a transmission tube rotatably connected to the C-shaped beam, the transmission tube being slidably engaged with the transmission shaft, and an output end of the motor being fixed to the transmission tube.

[0016] Furthermore, both the bottom outer sides of the first and second cylindrical shells are fixed with arc-shaped blocks, and one end of the second screw is rotatably connected to a roller that rolls against the arc-shaped blocks.

[0017] Furthermore, brass mesh is fixed to the bottom surface of both the first and second cylindrical shells, and zipper tape is fixed to the edges of the two brass meshes that are close to each other, and a zipper is sewn between the two zipper tapes.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By splicing two cylindrical shells to form a complete cylindrical shield, the shell is fitted onto the outside of the mining electromechanical equipment. Both shells are made of materials such as copper and aluminum that can reflect and absorb electromagnetic waves, effectively resisting internal and external electromagnetic interference. A magnetic induction sensor is installed on the outside of shell one, which can detect the electromagnetic strength outside the shield. The drive component drives the shield to rotate, allowing the magnetic induction sensor to rotate around the electromechanical equipment for all-round electromagnetic strength detection. Based on the detection results of electromagnetic strength in different directions of the equipment, the two pipes of the heat dissipation component can be oriented towards the direction with relatively weak electromagnetic strength, which helps to reduce electromagnetic waves from interfering with the equipment's operation through the pipes of the heat dissipation component.

[0020] By evenly fixing multiple pins around the perimeter of the shield, when the magnetic induction sensor detects a strong electromagnetic wave in a certain direction of the equipment, the arc-shaped plate (also made of materials that shield electromagnetic waves such as copper and aluminum) can be fixed to the corresponding outer side of the shield where the electromagnetic wave is strong by using the pins. The arc-shaped plate can increase the thickness of the shield, and the thicker aluminum or copper shield can effectively absorb high-frequency electromagnetic waves and reduce their penetration.

[0021] By also installing a magnetic induction sensor on the inner side of the shell, the electromagnetic strength of the equipment itself can be detected while the shield rotates to detect the electromagnetic strength of the environment. Based on the electromagnetic strength detection results, the installation position of the electromechanical equipment can be adjusted so that the position of the electromechanical equipment with stronger electromagnetic strength faces away from other external equipment, which helps to prevent electromagnetic interference between different devices. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the support and drive assembly structure in this utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0025] Figure 4 This is a schematic diagram of the structure of the arc-shaped plate being disassembled from the shielding cover in this utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the shielding cover in this utility model.

[0027] In the diagram: 100, bracket; 110, U-shaped beam; 120, base plate; 130, screw one; 200, shielding cover; 210, cylinder shell one; 220, cylinder shell two; 230, arc-shaped block; 240, pin shaft; 250, arc-shaped plate; 251, oblique hole; 260, pipe seat; 270, stud; 280, connecting plate; 300, magnetic induction sensor; 400, drive assembly; 410, motor one; 420, transmission pipe; 430, transmission shaft; 500, support assembly; 510, threaded pipe; 520, screw two; 530, roller; 600, brass mesh; 610, zipper tape; 700, heat dissipation assembly; 710, pipe; 720, fan blade; 730, motor two. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1, please refer to Figure 1 - Figure 5 In this embodiment of the present invention, an anti-electromagnetic interference shielding device for coal mine electromechanical equipment includes a support 100, which includes a U-shaped beam 110. A shielding cover 200 is installed inside the U-shaped beam 110. The shielding cover 200 includes two cylindrical shells, a first cylindrical shell 210 and a second cylindrical shell 220, which can be spliced ​​and fixed into a cylindrical shell. Multiple pins 240 are fixed at equal angles in an annular shape on the outer side of the shielding cover 200. An arc-shaped plate 250 is detachably snapped and fixed on the outer side of the pins 240. Two magnets are embedded and fixed on the outer side of the first cylindrical shell 210. The sensor 300 and the top of the convex beam 110 are equipped with a drive assembly 400. The drive assembly 400 includes a motor 410 that is detachably and fixedly installed with the convex beam 110. The output end of the motor 410 is slidably engaged with a transmission shaft 430 that can drive the cylinder shell 210 to rotate. Both ends of the convex beam 110 are provided with support assemblies 500. The support assembly 500 includes a threaded tube 510 that is fixedly connected to the convex beam 110. One end of the threaded tube 510 is screwed to a screw 520 for supporting the shield 200.

[0030] Specifically, by designing the traditional metal shield as two interlocking cylindrical shells 210 and 220, it is easy to fit and install onto the outside of the electromechanical equipment. By installing a magnetic induction sensor 300 on the shield 200 and having the drive assembly 400 rotate the shield 200, the magnetic induction sensor 300 can detect the electromagnetic strength around the electromechanical equipment. Based on the detected electromagnetic strength, the heat dissipation assembly 700 can be moved to a location with weaker electromagnetic interference, effectively preventing electromagnetic waves from interfering with the equipment's operation through the pipes 710 of the heat dissipation assembly 700. Alternatively, an arc-shaped plate 250 can be installed in a location with stronger electromagnetic interference to increase the thickness of a local area of ​​the shield 200. A thicker aluminum or copper shield 200 can effectively absorb high-frequency electromagnetic waves and reduce the penetration of electromagnetic waves into the shield 200.

[0031] like Figure 1 and Figure 2As shown, in this embodiment, a base plate 120 is fixedly connected to the bottom of both ends of the C-shaped beam 110. An inclined brace is fixed between the base plate 120 and the C-shaped beam 110, which helps to improve the stability of the C-shaped beam 110. A screw 130 is screwed to both ends of the base plate 120. A circular rubber block is fixed to the bottom of the screw 130. When the ground is uneven, the screw 130 at the low point can be rotated to make the rubber block extend and support the low position, which helps the base plate 120 to stably support the C-shaped beam 110 on the ground.

[0032] like Figure 4 and Figure 5 As shown, in this embodiment, two studs 270 are fixedly connected to the top surfaces of both the first cylindrical shell 210 and the second cylindrical shell 220. When installing the first cylindrical shell 210 and the second cylindrical shell 220, the first cylindrical shell 210 and the second cylindrical shell 220 are first arranged on both sides of the electromechanical equipment, and then the first cylindrical shell 210 and the second cylindrical shell 220 are moved closer together so that the semi-circular block on the top of the first cylindrical shell 210 is engaged with the semi-circular groove of the second cylindrical shell 220. Then, a connecting plate 280 is sleeved between two adjacent studs 270. Finally, a nut is screwed into the top of the connecting plate 280 through the studs 270, so that the first cylindrical shell 210 and the second cylindrical shell 220 are spliced ​​and fixed into a shielding cover 200 by the connecting plate 280 and the nut.

[0033] like Figure 1 and Figure 5 As shown, in this embodiment, two heat dissipation assemblies 700 are arranged in a connected manner on the outer side of the first cylindrical shell 210. The heat dissipation assembly 700 includes a pipe 710 embedded and fixed with the first cylindrical shell 210, a fan blade 720 is rotatably connected inside the pipe 710, and a second motor 730 that can drive the fan blade 720 to rotate is fixedly connected inside the pipe 710.

[0034] In this embodiment, the output of motor 730 drives the fan blade 720 to rotate, which can deliver outside air into the shield 200, which helps to dissipate heat from the electromechanical equipment inside the shield 200. The air inside the shield 200 can also be discharged to the outside through the gap between the shield 200 and the ground, which helps to improve the airflow inside the shield 200 and enhance the heat dissipation effect of the electromechanical equipment.

[0035] like Figure 2 and Figure 3 As shown, in this embodiment, a tube seat 260 is fixed on the top surface of the cylindrical shell 210, and a hexagonal shaft that is inserted into the tube seat 260 for transmission is fixed on the bottom of the transmission shaft 430. The drive assembly 400 also includes a transmission pipe 420 that is rotatably connected to the C-shaped beam 110. The transmission pipe 420 is slidably engaged with the transmission shaft 430, and the output end of the motor 410 is fixed to the transmission pipe 420.

[0036] In this embodiment, during the installation of the splicing shield 200, the drive shaft 430 is moved upward along the drive tube 420 to reserve space for the splicing shell 1 210 and shell 2 220. After the shell 1 210 and shell 2 220 are spliced, the drive shaft 430 is released. The hexagonal shaft at the bottom of the drive shaft 430 can be inserted into the hexagonal groove inside the tube seat 260, so that the motor 1 410 can drive the hexagonal shaft to rotate the tube seat 260 through the drive tube 420 and the drive shaft 430, and the tube seat 260 will then rotate the shield 200.

[0037] In this embodiment, refer to Figure 2 The drive shaft 430 has a slot on its outer side, and the drive tube 420 has a locking block inside that slides and engages with the slot, so that the drive shaft 430 can slide up and down along the drive tube 420 and rotate synchronously with the drive tube 420.

[0038] like Figure 1 and Figure 3 As shown, in this embodiment, arc-shaped blocks 230 are fixed on the outer bottom of both the first cylindrical shell 210 and the second cylindrical shell 220. One end of the second screw 520 is rotatably connected to a roller 530 that rolls against the arc-shaped blocks 230. The two arc-shaped blocks 230 are combined to form a ring. During the rotation of the shield 200, the ring moves on the roller 530, and the roller 530 rotates. The roller 530 supports the rotating shield 200, which helps the shield 200 rotate stably.

[0039] In this embodiment, in the initial state, referencing Figure 3 The second screw 520 is housed inside the threaded tube 510 and does not contact the arc block 230. After the shielding cover 200 is assembled, the second screw 520 is rotated to screw out from inside the threaded tube 510, so that the roller 530 on the second screw 520 is supported on the bottom surface of the arc block 230, thereby supporting the assembled shielding cover 200.

[0040] like Figure 5 As shown, in this embodiment, two arc-shaped protrusions are fixed on the end face of the first cylindrical shell 210, and an arc-shaped notch corresponding to the arc-shaped protrusions is opened on the end face of the second cylindrical shell 220. During the splicing process of the first cylindrical shell 210 and the second cylindrical shell 220, the arc-shaped protrusions are inserted into the arc-shaped notches at the corresponding positions, which improves the firmness of the splicing and installation of the first cylindrical shell 210 and the second cylindrical shell 220, and also facilitates the installation and fixation of the pin 240 on the outside of the arc-shaped protrusions.

[0041] like Figure 4 As shown, in this embodiment, the arc plate 250 is provided with an oblique hole 251 that is movably inserted into the pin 240, so that the arc plate 250 will not fall off the shield 200 on its own after being inserted into the pin 240.

[0042] In Example 2, based on Example 1, a gap is reserved between the bottom surface of the shield 200 and the ground for arranging electromechanical equipment cables in order to reduce the interference of electromagnetic waves through the gap location on the electromechanical equipment.

[0043] like Figure 1 and Figure 4 As shown, in this embodiment, brass mesh 600 is fixed to the bottom surface of both the first cylindrical shell 210 and the second cylindrical shell 220. Zipper tape 610 is fixed to the edges of the two brass meshes 600 that are close to each other. A zipper is sewn between the two zipper tapes 610. The brass mesh 600 can cover the gap between the shielding cover 200 and the ground. Even if the ground is uneven, the brass mesh 600 can still fit with the uneven bottom surface, weakening the electromagnetic waves entering the shielding cover 200.

[0044] In this embodiment, the cable connected to the device can pass through the bottom surface of the brass mesh 600. During the rotation of the shielding cover 200, the brass mesh 600 will not be obstructed by the cable. By sewing and fixing the end faces of the two brass meshes 600 together with zippers and zipper tapes 610, the two adjacent zipper tapes 610 are initially separated. After the first cylindrical shell 210 and the second cylindrical shell 220 are merged, the zipper is pulled up, which allows the two brass meshes 600 to be sewn and fixed to the bottom surface of the shielding cover 200.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electromagnetic interference shielding device for coal mine electromechanical equipment, characterized in that, include: The support (100) includes an inverted beam (110); The shield (200) is installed inside the bracket (100). The shield (200) includes two cylindrical shells, one (210) and the other (220), which can be spliced ​​into a cylindrical shell. Multiple pins (240) are evenly fixed on the outside of the shield (200). An arc plate (250) is detachably snapped onto the outside of the pins (240). Two magnetic induction sensors (300) are fixed to the first shell (210). The two magnetic induction sensors (300) are used to detect the electromagnetic intensity inside and outside the shielding cover (200). The drive assembly (400) is arranged on the top of the slanted beam (110). The drive assembly (400) includes a motor (410), and the output end of the motor (410) is connected to a drive shaft (430) that can drive the cylindrical shell (210) to rotate. There are two support components (500), which are fixed at both ends of the C-shaped beam (110). The support component (500) includes a threaded tube (510), and one end of the threaded tube (510) is screwed to a screw (520) for supporting the shield (200).

2. The electromagnetic interference shielding device for coal mine electromechanical equipment according to claim 1, characterized in that, Two studs (270) are fixed on the top surface of both the first cylindrical shell (210) and the second cylindrical shell (220), and a connecting plate (280) is sleeved and fixed between two adjacent studs (270).

3. The electromagnetic interference shielding device for coal mine electromechanical equipment according to claim 1, characterized in that, Two heat dissipation assemblies (700) are connected to the outer side of the first shell (210). The heat dissipation assembly (700) includes a pipe (710) embedded and fixed to the first shell (210). A fan blade (720) is rotatably connected inside the pipe (710).

4. The electromagnetic interference shielding device for coal mine electromechanical equipment according to claim 1, characterized in that, The top surface of the first cylindrical shell (210) is fixed with a tube seat (260), and the bottom of the drive shaft (430) is fixed with a hexagonal shaft that is inserted and driven by the tube seat (260).

5. The electromagnetic interference shielding device for coal mine electromechanical equipment according to claim 4, characterized in that, The drive assembly (400) also includes a transmission tube (420) rotatably connected to the C-beam (110), the transmission tube (420) is slidably engaged with the transmission shaft (430), and the output end of the motor (410) is fixed to the transmission tube (420).

6. The electromagnetic interference shielding device for coal mine electromechanical equipment according to claim 1, characterized in that, Both the bottom outer sides of the first cylindrical shell (210) and the second cylindrical shell (220) are fixed with arc-shaped blocks (230), and one end of the second screw (520) is rotatably connected to a roller (530) that rolls against the arc-shaped block (230).

7. An electromagnetic interference shielding device for coal mine electromechanical equipment according to claim 1 or 6, characterized in that, Both the bottom surfaces of the first (210) and the second (220) cylindrical shells are fixed with brass mesh (600), and the edges of the two brass meshes (600) that are close to each other are fixed with zipper tapes, and the two zipper tapes are sewn together with zippers.

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