A protective device for coal mine electromechanical equipment

Abstract

This utility model relates to the field of electromechanical equipment protection technology and discloses a protective device for coal mine electromechanical equipment, including a tunneling machine. Two support plates are fixedly connected to the upper surface of the tunneling machine. Two first transverse grooves are opened inside the two support plates. Two receiving buckets are arranged between the two support plates, and there is a gap between the two receiving buckets. By setting an independent drive motor, reciprocating screw and scraper, the crushed stone on the upper surface of the tunneling machine can be actively and periodically scraped and cleaned. At the same time, the double-threaded rod driven by the motor and transmission gear can actively control the tilting and unloading of the receiving buckets. It does not depend on the impact force of coal on the protective structure. Therefore, regardless of the size of the coal or the strength of the impact, the cleaning action can be effectively triggered and completed, completely avoiding the problems of coal accumulation, affecting equipment heat dissipation and working visibility caused by the failure of the cleaning function.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical equipment protection technology, specifically a protective device for coal mine electromechanical equipment. Background Technology

[0002] In the process of coal mining, a variety of electromechanical equipment is used. Coal mining electromechanical equipment is diverse, and tunneling machines are an extremely important type of mechanical equipment in coal mining, especially in the process of tunnel excavation. Tunneling machines integrate multiple functions such as rock breaking, rock loading, and rock transportation. They can continuously cut and crush coal seams and load and transport the crushed materials to achieve efficient tunnel excavation.

[0003] In the prior art, Chinese utility model patent CN223330572U discloses a protective device for coal mine electromechanical equipment. This prior art, by incorporating components such as a buffer plate, slider, spring, and support frame, prevents direct impact of coal blocks on the cutting section, thus providing good protection. However, in actual use, when the impact force of the coal block is small or insufficient to drive the buffer plate to move, the buffer plate may not generate enough stroke to effectively trigger the cleaning action. This causes coal blocks to gradually accumulate above the cutting section, not only losing its cleaning function but also potentially interfering with the operation, making it inconvenient to use. Therefore, we propose a protective device for coal mine electromechanical equipment to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a protective device for coal mine electromechanical equipment to solve the problem of inconvenience in the use of some existing protective devices for coal mine electromechanical equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for coal mine electromechanical equipment, including a tunneling machine. Two support plates are fixedly connected to the upper surface of the tunneling machine. Two first transverse grooves are formed inside each of the two support plates. Two receiving buckets are arranged between the two support plates, with a gap between them. The two receiving buckets are rotatably connected between the two support plates via shafts. A second transverse groove and an inclined groove are formed on the front surface of each of the two receiving buckets. The second transverse groove and the inclined groove are connected. A connecting shaft is slidably connected inside the first transverse groove. The connecting shaft extends into the interior of the second transverse groove and is slidably connected to the second transverse groove and the inclined groove. A first through groove is formed inside the front support plate. A drive assembly is arranged inside the first through groove. A processing box is provided on the lower surface of the tunneling machine.

[0006] Preferably, the drive assembly includes a bidirectional threaded rod, which is rotatably connected inside the first through groove. Guide blocks are threadedly fitted at both opposite threads of the bidirectional threaded rod. The guide blocks are slidably connected to the top wall of the first through groove. A vertical plate is fixedly connected to the surface of the guide block, and the vertical plate is fixedly connected to the connecting shaft.

[0007] Preferably, the front side of the receiving hopper is provided with an inclined surface.

[0008] Preferably, a reciprocating lead screw is rotatably connected inside the first through groove, and a reciprocating lead screw sleeve is provided outside the reciprocating lead screw. The reciprocating lead screw sleeve is slidably connected to the bottom wall of the first through groove. A drive motor is fixedly connected to one side surface of the front support plate. The output shaft of the drive motor rotates through the interior of the support plate and is fixedly connected to the reciprocating lead screw.

[0009] Preferably, the other side surface of the support plate is rotatably connected to two meshing transmission gears via shafts. The shafts of the two transmission gears rotatably penetrate into the interior of the support plate and are respectively fixedly connected to a bidirectional threaded rod and a reciprocating screw.

[0010] Preferably, a second through groove is formed on the surface of the rear support plate, a guide rod is fixedly connected inside the second through groove, a sliding block is slidably sleeved on the outside of the guide rod, the sliding block is also slidably connected inside the second through groove, a fixing rod is fixedly connected to the surface of the sliding block and the reciprocating lead screw sleeve, and a scraper is fixedly connected between the two fixing rods.

[0011] Preferably, the upper surfaces of the two receiving hoppers are fixedly connected with telescopic pads.

[0012] Preferably, the reciprocating screw is provided with two first telescopic tubes on its exterior. One end of the first telescopic tube is fixedly connected to the reciprocating screw sleeve, and the other end is fixedly connected to the interior of the first through groove. The bidirectional threaded rod is provided with three second telescopic tubes on its exterior. One end of the second telescopic tubes on both sides is fixedly connected to the guide block, and the other end is fixedly connected to the inner wall of the first through groove. The two ends of the second telescopic tube in the middle are fixedly connected to two guide blocks respectively.

[0013] Compared with the prior art, this utility model provides a protective device for coal mine electromechanical equipment, which has the following beneficial effects: 1. This protective device for coal mine electromechanical equipment, through the installation of an independent drive motor, reciprocating screw, and scraper, can actively and periodically scrape and clean the gravel on the upper surface of the tunneling machine. At the same time, through the cooperation of the motor and transmission gear to drive the bidirectional threaded rod, it can actively control the tilting and unloading of the receiving bucket. It does not rely on the impact force of coal blocks on the protective structure. Therefore, regardless of the size of the coal blocks or the strength of the impact force, it can effectively trigger and complete the cleaning action, completely avoiding the problems of coal block accumulation, affecting equipment heat dissipation and working visibility caused by the failure of the cleaning function.

[0014] 2. This protective device for coal mine electromechanical equipment integrates the receiving bucket, scraper, bidirectional threaded rod, connecting shaft, and other structures into a support plate frame, and shares a common drive motor and transmission system. It only requires one power source to simultaneously complete the two functions of surface scraping and unloading in the bucket. The structure is compact and highly efficient, which greatly simplifies the operation process and improves the automation level of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a protective device for coal mine electromechanical equipment according to the present invention; Figure 2 This is a schematic diagram of the rear structure of the tunneling machine of this utility model; Figure 3 This is a schematic diagram of the structure of the first through groove of this utility model; Figure 4 This is a schematic diagram of the structure of the receiving bucket of this utility model; Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Tunneling machine; 2. Support plate; 3. First transverse groove; 4. Receiving bucket; 5. Second transverse groove; 6. Inclined groove; 7. Connecting shaft; 8. First through groove; 9. Inclined surface; 10. Bidirectional threaded rod; 11. Guide block; 12. Vertical plate; 13. Reciprocating screw; 14. Reciprocating screw sleeve; 15. Drive motor; 16. Transmission gear; 17. First telescopic tube; 18. Second telescopic tube; 19. Telescopic pad; 20. Processing box; 21. Second through groove; 22. Guide rod; 23. Sliding block; 24. Fixed rod; 25. Scraper. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-5 This utility model provides a technical solution: a protective device for coal mine electromechanical equipment, including a tunneling machine 1. Two support plates 2 are fixedly connected to the upper surface of the tunneling machine 1. Each support plate 2 has two first transverse grooves 3 for sliding. Two receiving hoppers 4 are arranged between the two support plates 2 for collecting and buffering coal fragments. The bottom wall of each receiving hopper 4 is provided with a sponge buffer pad, which can effectively absorb the impact energy of falling coal blocks and directly protect the equipment below. There is a gap between the two receiving hoppers 4 to avoid interference. Both receiving hoppers 4 are rotatably connected between the two support plates 2 via shafts. The front surface of each receiving hopper 4 has a sliding groove. The second horizontal groove 5 and the inclined groove 6 are connected. The first horizontal groove 3 has a connecting shaft 7 that is slidably connected inside. The connecting shaft 7 extends into the interior of the second horizontal groove 5 and is slidably connected to the second horizontal groove 5 and the inclined groove 6. The front support plate 2 has a first through groove 8 inside. The first through groove 8 is equipped with a drive assembly. The lower surface of the tunneling machine 1 is equipped with a processing box 20. The processing box 20 is also equipped with a crushing mechanism for crushing gravel. The cleaned and dumped gravel can directly enter the processing box for crushing, which is convenient for subsequent centralized transportation or processing. This not only protects the tunneling machine body, but also optimizes the material handling process of the working face and improves the overall operation efficiency.

[0019] The front side of the receiving hopper 4 is provided with an inclined surface 9. With the help of the inclined surface 9, the crushed stone inside the receiving hopper 4 will not fall out of the receiving hopper 4. When the receiving hopper 4 is tilted, it is also convenient for the crushed stone to fall into the processing box 20 for crushing.

[0020] The drive assembly includes a bidirectional threaded rod 10 for rotation, which is rotatably connected inside the first through groove 8. Guide blocks 11 for sliding are threaded onto the two opposite threads of the bidirectional threaded rod 10. The guide blocks 11 are slidably connected to the top wall of the first through groove 8. A vertical plate 12 for connection is fixedly connected to the surface of the guide blocks 11. The vertical plate 12 and the connecting shaft 7 are fixedly connected. Rotation of the bidirectional threaded rod 10 drives the guide blocks 11 to move, which in turn drives the connecting shaft 7 to move. At this time, the connecting shaft 7 moves laterally inside the first transverse groove 3 and the second transverse groove 5. After the connecting shaft 7 enters the inclined groove 6 from inside the second transverse groove 5, it forces the end of the receiving hopper 4 to move downwards, thereby tilting the receiving hopper 4 so that the crushed stone inside the receiving hopper 4 can be poured into the processing box 20.

[0021] A reciprocating screw 13 is rotatably connected inside the first through groove 8. A reciprocating screw sleeve 14 is provided outside the reciprocating screw 13. The reciprocating screw sleeve 14 cooperates with the helical groove of the reciprocating screw 13 through the internal guide element, so that the reciprocating screw 13 can drive the reciprocating screw sleeve 14 to move back and forth outside when it rotates. The reciprocating screw sleeve 14 is slidably connected to the bottom wall of the first through groove 8. A drive motor 15 for providing power is fixedly connected to one side surface of the front support plate 2. The output shaft of the drive motor 15 rotates through the interior of the support plate 2 and is fixedly connected to the reciprocating screw 13. The drive motor 15 can be started by an external controller to drive the rotation of the reciprocating screw 13. The rotation of the reciprocating screw 13 can drive the reciprocating screw sleeve 14 to move back and forth inside the first through groove 8.

[0022] In the above embodiments, given that this solution is applied to the explosive environment of underground coal mines, the drive motor 15 in the solution must be an explosion-proof motor that meets the national explosion-proof standards, and its enclosure protection level is not lower than IP65, so as to ensure that it can effectively prevent the intrusion of gas and coal dust and the impact of water spray.

[0023] On the other side surface of the support plate 2, two meshing transmission gears 16 are rotatably connected via shafts. The shafts of the two transmission gears 16 rotatably penetrate into the interior of the support plate 2 and are fixedly connected to the bidirectional threaded rod 10 and the reciprocating screw 13, respectively. The rotation of the bidirectional threaded rod 10 can be driven by the rotation of the reciprocating screw 13 and the transmission of the two transmission gears 16.

[0024] The surface of the rear support plate 2 is provided with a second through groove 21 for sliding. Inside the second through groove 21, a guide rod 22 for limiting the movement trajectory of the structure is fixedly connected. A sliding block 23 is slidably sleeved on the outside of the guide rod 22. The sliding block 23 is also slidably connected inside the second through groove 21. Fixed rods 24 are fixedly connected to the surfaces of the sliding block 23 and the reciprocating screw sleeve 14. A scraper 25 is fixedly connected between the two fixed rods 24. The movement of the reciprocating screw sleeve 14 can drive the movement of the fixed rods 24, thereby driving the movement of the scraper 25, and finally realizing the cleaning of the gravel on the upper surface of the tunneling machine 1 by the scraper 25.

[0025] The upper surfaces of the two receiving hoppers 4 are fixedly connected with telescopic pads 19. The telescopic pads 19 are used to cover the gap between the two receiving hoppers 4, thereby further ensuring the smoothness of the rotation of the two receiving hoppers 4.

[0026] The reciprocating screw 13 is provided with two first telescopic tubes 17 for protection. One end of the first telescopic tube 17 is fixedly connected to the reciprocating screw sleeve 14, and the other end is fixedly connected to the inside of the first through groove 8. The bidirectional threaded rod 10 is provided with three second telescopic tubes 18 for protection. One end of the second telescopic tubes 18 on both sides is fixedly connected to the guide block 11, and the other end is fixedly connected to the inner wall of the first through groove 8. The two ends of the second telescopic tube 18 in the middle are fixedly connected to the two guide blocks 11 respectively. The cooperation of the first telescopic tubes 17 and the second telescopic tubes 18 facilitates the protection of the reciprocating screw 13 and the bidirectional threaded rod 10, thereby ensuring the stability of the transmission.

[0027] Working principle: When in use, the protective device for coal mine electromechanical equipment firstly catches falling rocks from the top through the two receiving buckets 4 and the sponge pads inside them.

[0028] In addition, the reciprocating screw 13 can be rotated by starting the drive motor 15 through the external controller. The rotation of the reciprocating screw 13 can drive the reciprocating screw sleeve 14 to move back and forth inside the first through groove 8. Furthermore, the rotation of the reciprocating screw 13 and the transmission of the two transmission gears 16 can drive the rotation of the bidirectional threaded rod 10.

[0029] When the reciprocating screw sleeve 14 moves, it drives the fixed rod 24 to move, which in turn drives the scraper 25 to move, ultimately achieving the scraper 25 to clean the gravel on the upper surface of the tunneling machine 1. At the same time, the rotation of the bidirectional threaded rod 10 drives the guide block 11 to move, and the movement of the guide block 11 drives the connecting shaft 7 to move. At this time, the connecting shaft 7 will move laterally inside the first transverse groove 3 and the second transverse groove 5. After the connecting shaft 7 enters the inclined groove 6 from inside the second transverse groove 5, it will force the end of the receiving bucket 4 to move downward, thereby achieving the tilting of the receiving bucket 4, so that the gravel inside the receiving bucket 4 can be poured into the processing box 20.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for coal mine electromechanical equipment, comprising a tunneling machine (1), characterized in that: The upper surface of the tunneling machine (1) is fixedly connected to two support plates (2). The interior of each of the two support plates (2) is provided with two first transverse grooves (3). Two receiving buckets (4) are provided between the two support plates (2). There is a gap between the two receiving buckets (4). The two receiving buckets (4) are rotatably connected between the two support plates (2) by a shaft. The front surface of each of the two receiving buckets (4) is provided with a second transverse groove (5) and an inclined groove (6). The second transverse groove (5) and the inclined groove (6) are connected. The interior of the first transverse groove (3) is slidably connected with a connecting shaft (7). The connecting shaft (7) extends into the interior of the second transverse groove (5) and is slidably connected with the second transverse groove (5) and the inclined groove (6). The interior of the front support plate (2) is provided with a first through groove (8). The interior of the first through groove (8) is provided with a drive assembly. The lower surface of the tunneling machine (1) is provided with a processing box (20).

2. The protective device for coal mine electromechanical equipment according to claim 1, characterized in that: The drive assembly includes a bidirectional threaded rod (10), which is rotatably connected inside the first through groove (8). Guide blocks (11) are threadedly fitted at the two opposite threads of the bidirectional threaded rod (10). The guide blocks (11) are slidably connected to the top wall of the first through groove (8). A vertical plate (12) is fixedly connected to the surface of the guide block (11). The vertical plate (12) is fixedly connected to the connecting shaft (7).

3. The protective device for coal mine electromechanical equipment according to claim 2, characterized in that: The front side of the receiving bucket (4) is provided with an inclined surface (9).

4. A protective device for coal mine electromechanical equipment according to claim 3, characterized in that: The first through groove (8) is also rotatably connected to a reciprocating lead screw (13). A reciprocating lead screw sleeve (14) is provided on the outside of the reciprocating lead screw (13). The reciprocating lead screw sleeve (14) is slidably connected to the bottom wall of the first through groove (8). A drive motor (15) is fixedly connected to one side surface of the front support plate (2). The output shaft of the drive motor (15) rotates through the inside of the support plate (2) and is fixedly connected to the reciprocating lead screw (13).

5. A protective device for coal mine electromechanical equipment according to claim 4, characterized in that: The other side surface of the support plate (2) is rotatably connected to two meshing transmission gears (16) via shafts. The shafts of the two transmission gears (16) rotatably penetrate into the interior of the support plate (2) and are fixedly connected to the bidirectional threaded rod (10) and the reciprocating screw (13) respectively.

6. A protective device for coal mine electromechanical equipment according to claim 5, characterized in that: The surface of the rear support plate (2) is provided with a second through groove (21). A guide rod (22) is fixedly connected inside the second through groove (21). A sliding block (23) is slidably sleeved on the outside of the guide rod (22). The sliding block (23) is also slidably connected inside the second through groove (21). Fixed rods (24) are fixedly connected to the surfaces of the sliding block (23) and the reciprocating screw sleeve (14). A scraper (25) is fixedly connected between the two fixed rods (24).

7. A protective device for coal mine electromechanical equipment according to claim 6, characterized in that: The upper surfaces of the two receiving buckets (4) are fixedly connected with telescopic pads (19).

8. A protective device for coal mine electromechanical equipment according to claim 7, characterized in that: The reciprocating screw (13) has two first telescopic tubes (17) on its outside. One end of the first telescopic tube (17) is fixedly connected to the reciprocating screw sleeve (14), and the other end is fixedly connected to the inside of the first through groove (8). The bidirectional threaded rod (10) has three second telescopic tubes (18) on its outside. One end of the second telescopic tubes (18) on both sides is fixedly connected to the guide block (11), and the other end is fixedly connected to the inner wall of the first through groove (8). The two ends of the second telescopic tube (18) in the middle are fixedly connected to the two guide blocks (11) respectively.

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