A fixed coal bunker dredging machine

Abstract

The utility model relates to the technical field of coal bunker dredging, provide a kind of fixed coal bunker dredging machine, including the workbench being arranged in the upper end of belt conveyor, fixed assembly is located on workbench, first telescopic mechanism is pivotally connected on fixed assembly, second telescopic mechanism is pivotally connected on the tail end of first telescopic mechanism, and drill head assembly is connected in the tail end of second telescopic mechanism. Fixed assembly is also provided with first driving part for driving first telescopic mechanism to rotate, and first driving part is used to adjust the angle of first telescopic mechanism swinging up and down on workbench. Drill head assembly includes second driving part, and multiple-wing drill head is arranged on the power output end of second driving part, and second driving part drives multiple-wing drill head to rotate. The utility model is especially suitable for the situation that inventory coal bunker is blocked, can realize the accurate adjustment of the swing angle of drill head assembly up and down, adapt to different coal bunker shapes and blocked positions, enhance equipment applicability.

Description

Technical Field

[0001] This utility model relates to the field of coal bunker unblocking technology, and in particular to a fixed coal bunker unblocking machine. Background Technology

[0002] As a core facility for coal storage and transportation, coal silos are increasingly plagued by blockages, which have become a critical bottleneck restricting production efficiency. When the coal silo discharge port is blocked, or when "wall-hanging" or "bulging" occurs inside the silo, it severely impacts the efficiency of raw coal silo utilization and can even lead to shutdowns. When the moisture content inside the silo reaches a certain level, the fluidity of the raw coal increases. When using traditional manual methods to clear blockages or wall-hanging blockages, the chute gates are difficult to control, which can easily lead to silo collapses and endanger personnel and equipment safety.

[0003] Traditional methods of clearing blockages often rely on manual intervention, with workers outside the coal bunker using hammers and chisels to clear the blockages. This method poses multiple safety hazards. While existing coal bunkers employ pre-embedded arch-breaking technology and blasting methods to resolve blockages, the pre-embedded arch-breaking technology involves installing a vibratory arch-breaking device in the middle of the bunker and simultaneously activating an air cannon for resonant breaking. However, this method requires the equipment to be installed during the initial construction of the coal bunker, making it unsuitable for existing coal bunkers.

[0004] Secondly, the blasting method involves placing explosives inside the silo and then triggering the explosives to destroy the coal blocking the blockage. However, this method is prone to causing an "avalanche"-like collapse, significantly increasing uncontrollability and potentially causing injury or death to nearby operators due to the sudden accumulation of pressure.

[0005] Therefore, for the existing methods of clearing existing coal bunkers, one approach is to manually clear the blocked areas at the top of the bunker when there is no complete blockage and coal dust is stuck to the walls. However, in the case of complete blockage, operators need to use hand tools to clear the blockage at the bunker outlet, which increases the risk of injury or death. Utility Model Content

[0006] In view of this, the present invention aims to propose a fixed coal bunker unblocking machine that can automatically unblock the bottom of the coal bunker, replacing the traditional manual operation mode, ensuring the personal safety of operators and effectively unblocking blockages.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A fixed coal bunker unblocking machine includes a workbench mounted on the upper end of a belt conveyor, a fixed assembly mounted on the workbench, a first telescopic mechanism pivotally connected to the fixed assembly, a second telescopic mechanism pivotally connected to the tail end of the first telescopic mechanism, and a drill bit assembly connected to the tail end of the second telescopic mechanism. The fixed component is also provided with a first drive unit for driving the first telescopic mechanism to rotate, and the first drive unit is used to adjust the angle of the first telescopic mechanism swinging up and down along the worktable. The drill bit assembly includes a second drive unit and a multi-bladed drill bit disposed at the power output end of the second drive unit, wherein the second drive unit drives the multi-bladed drill bit to rotate.

[0008] Furthermore, the fixing component includes a base plate disposed on the workbench and a column connected to the base plate, the column having a cuboid structure; A first support is provided above the column, and a second support is provided below the column; The fixed end of the first drive unit is pivotally connected to the first support, and the fixed end of the first telescopic mechanism is pivotally connected to the second support.

[0009] Furthermore, the fixed end of the first telescopic mechanism is provided with a first fixed seat, the first fixed seat including a body and two first mounting plates connected opposite to one end of the body; The second support is disposed between the two first mounting plates, and the second support is connected to the first mounting plate by a through first pin.

[0010] Furthermore, the upper end of the main body is provided with two opposing second mounting plates, the power output end of the first drive unit is connected between the two second mounting plates, and the two second mounting plates are connected to the first drive unit through a second pin.

[0011] Furthermore, the tail end of the first telescopic mechanism is provided with a second fixed seat, a third driving unit is connected to the second fixed seat, the power output end of the third driving unit is connected to a transition seat, and the transition seat is connected to the fixed end of the second telescopic mechanism. The third driving unit drives the transition seat to rotate relative to the second fixed seat.

[0012] Furthermore, the transition seat includes a side plate connected to the power output end of the second drive unit, a support plate connected to the side plate, and the second telescopic mechanism includes a telescopic body, a third mounting plate connected to the fixed end of the telescopic body, and a cylindrical seat connected to the tail end of the telescopic body. The second drive unit has two power output ends, and the two side plates are respectively connected to both sides of the support plate; The second drive unit is mounted on the cylindrical base.

[0013] Furthermore, the support plate and the third mounting plate are connected by an overload bolt, which includes a positioning section, a main body section and a threaded section. The positioning section abuts against the third mounting plate, and the threaded section extends to the outside of the third mounting plate for connection with a lock nut. An overload section is formed in the middle of the main body segment, and the diameter of the overload section is smaller than that of the main body segment.

[0014] Furthermore, the multi-blade drill bit includes a central cylinder, a plurality of connecting arms evenly distributed around the outside of the central cylinder, and an annular plate passing through the plurality of connecting arms; A plurality of spaced-apart cutter heads are provided along the extension direction of the connecting arm, and the central cylinder is keyed to the power output shaft of the second drive unit.

[0015] Furthermore, the connecting arm includes a straight segment and an inclined segment, and a plurality of the inclined segments form a tapered surface that gradually increases in size from the front end to the rear end. The cutter head extends along the straight segment and the inclined segment in a plurality of ways.

[0016] Furthermore, the workbench includes a main frame, support legs located below the main frame, and an inclined ladder located between the main frame and the ground. The main frame is provided with a detachable side frame at one end facing the coal bunker. The main frame is provided with a clearance groove located below the first telescopic mechanism. When the dredging machine is in operation, the side frame is removed, and the first telescopic mechanism can swing up and down through the clearance groove.

[0017] Compared with the prior art, this utility model has the following advantages: The fixed coal bunker unblocking machine of this utility model, by setting a first telescopic mechanism and a second telescopic mechanism that can extend and retract at both ends, can flexibly adjust the extension length and working range of the drill bit assembly to ensure that it can penetrate deep into the coal bunker for unblocking. At the same time, the second telescopic mechanism is driven to rotate by the first drive unit. The second telescopic mechanism is pivotally connected to the first telescopic mechanism, which can realize the precise adjustment of the up and down swing angle of the drill bit assembly, adapting to different coal bunker shapes and blockage locations, and enhancing the applicability of the equipment.

[0018] Furthermore, a fixed component is installed to securely mount the equipment on the workbench above the belt conveyor, preventing displacement or tipping during operation. The drill bit assembly rotation drive mechanism is separated from the fixed structure, reducing the vibration impact on the workbench and ensuring its stability. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram showing the connection between the fixed coal bunker unclogging machine, the belt conveyor, and the coal bunker as described in this embodiment of the utility model; Figure 2 This is a three-dimensional schematic diagram of the non-working state of the fixed coal bunker unblocking machine described in this embodiment of the utility model; Figure 3 This is a three-dimensional schematic diagram of the working state of the fixed coal bunker unblocking machine described in this embodiment of the utility model; Figure 4 This is a first-view perspective perspective view of the fixed coal bunker unblocking machine described in this embodiment of the utility model, excluding the workbench. Figure 5 This is a second-view perspective perspective view of the fixed coal bunker unblocking machine described in this embodiment of the utility model, excluding the workbench. Figure 6 This is a three-dimensional schematic diagram of the first telescopic mechanism described in an embodiment of the present utility model; Figure 7 This is a front view schematic diagram of the first and second telescopic mechanisms in their non-working states according to an embodiment of the present utility model; Figure 8 This is a perspective view of the drill bit assembly described in an embodiment of the present utility model; Figure 9 for Figure 7 A magnified view of a section at point I; Figure 10 This is an electrical schematic diagram of the fixed coal bunker unblocking machine described in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Belt conveyor; 2. Workbench; 3. Fixed assembly; 4. First telescopic mechanism; 5. Second telescopic mechanism; 6. Drill bit assembly; 7. First drive unit; 8. Second fixed seat; 9. Third drive unit; 10. Transition seat; 11. Overload bolt; 12. Locking nut; 13. Coal bunker; 14. Camera; 15. Lighting lamp; 201. Main frame; 202. Support legs; 203. Inclined ladder; 204. Side frame; 301. Base plate; 302. Column; 303. First support; 304. Second support; 401. First fixed seat; 402. First pin; 403. Second pin; 501. Telescopic main body; 502. Third mounting plate; 503. Cylindrical base; 601. Second drive unit; 602. Multi-blade drill bit; 2011, clearance groove; 4011. Main body; 4012. First mounting plate; 4013. Second mounting plate; 6021, Center cylinder; 6022, Connecting arm; 6023, Annular plate; 6024, Cutting head; 60221, Straight segment; 60222, Inclined segment; 1101. Positioning section; 1102. Main body section; 1103. Threaded section; 1104. Overload section. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This embodiment relates to a fixed coal bunker unclogging machine, as follows: Figures 1 to 3 As shown, the dredging machine includes a workbench 2 mounted on the upper end of a belt conveyor 1, a fixed assembly 3 mounted on the workbench 2, a first telescopic mechanism 4 pivotally connected to the fixed assembly 3, a second telescopic mechanism 5 pivotally connected to the tail end of the first telescopic mechanism 4, and a drill bit assembly 6 connected to the tail end of the second telescopic mechanism 5. The fixed assembly 3 also has a first drive unit 7 for driving the first telescopic mechanism 4 to rotate, and the first drive unit 7 is used to adjust the angle at which the first telescopic mechanism 4 swings up and down along the workbench 2. The drill bit assembly 6 includes a second drive unit 601 and a multi-blade drill bit 602 located at the power output end of the second drive unit 601, and the second drive unit 601 drives the multi-blade drill bit 602 to rotate.

[0026] As described above, the fixed coal bunker unblocking machine of this embodiment, by setting a first telescopic mechanism 4 and a second telescopic mechanism 5 that can extend and retract at both ends, can flexibly adjust the extension length and working range of the drill bit assembly 6 to ensure that it can penetrate deep into the coal bunker 13 for unblocking. At the same time, the second telescopic mechanism 5 is driven to rotate by the first drive unit 7. The second telescopic mechanism 5 is pivotally connected to the first telescopic mechanism 4, which can realize the precise adjustment of the up and down swing angle of the drill bit assembly 6, adapt to different coal bunker 13 shapes and blockage locations, and enhance the applicability of the equipment.

[0027] Furthermore, the fixed component 3 securely mounts the equipment on the workbench 2 above the belt conveyor 1, preventing displacement or tipping during operation. The rotation drive mechanism of the drill bit assembly 6 is separated from the fixed structure, reducing the vibration impact on the workbench 2 and ensuring the stability of the workbench 2.

[0028] Based on the above overall introduction, such as Figures 1 to 3 As shown, the workbench 2 is fixedly installed above the belt conveyor 1 on the outlet side of the coal bunker 13. It is made of high-strength steel structure welded together, and the bottom is fixed to the frame of the belt conveyor 1 or the ground foundation by bolts to ensure the stability of the equipment during operation.

[0029] Workbench 2 is also equipped with a hydraulic system and an electrical system to provide power (the electrical system includes a remote visual control operating system for control). Workbench 2 has reserved wiring channels for hydraulic pipelines and electrical cables, and is also equipped with protective railings and maintenance access to facilitate equipment maintenance and safe operation for personnel.

[0030] The hydraulic system includes a hydraulic pump, a multi-way directional valve and a relief valve, hydraulic cylinders, a hydraulic motor for driving the drill bit, hydraulic lines, and filters. An explosion-proof motor drives the hydraulic pump, converting mechanical energy into hydraulic energy. The relief valve regulates the system's working pressure to prevent overload damage to components. The multi-way directional valve receives control signals from the electrical system to switch the flow direction of the hydraulic oil, thereby controlling the extension, retraction, or rotation direction of the hydraulic cylinders or motor. The filter removes impurities from the hydraulic oil, ensuring unobstructed flow in the hydraulic system lines and extending the service life of the components.

[0031] In addition, the electrical system includes a mine-use explosion-proof and intrinsically safe electrical control box, a mine-use explosion-proof and intrinsically safe vehicle-mounted wireless receiver, a mine-use intrinsically safe remote control transmitter, an explosion-proof motor, a low-concentration methane sensor, a mine-use intrinsically safe wireless infrared camera, cables, mine-use explosion-proof LED locomotive lights, and contactors, relays, fuses, circuit breakers, and terminals housed in the control box, providing stable power supply and electrical control logic support for all electrical equipment in the entire system. The mine-use explosion-proof and intrinsically safe electrical control box is connected to the mine's underground explosion-proof power supply, and uses circuit breakers, fuses, and other protective components to achieve power distribution and overload / short-circuit protection.

[0032] The mine-use explosion-proof and intrinsically safe vehicle-mounted wireless receiver has a built-in PLC microcontroller, serving as the control core of the electrical system. It receives signals from various sensors and remote control transmitters, and outputs control commands to the hydraulic system and the electrical components of each actuator. An explosion-proof motor provides power to the hydraulic pump. Contactors and relays amplify control signals and drive the start and stop of high-power electrical equipment. The wiring terminals feature an explosion-proof sealed design to ensure reliable cable connections and prevent flammable and explosive gases such as methane from entering the electrical components. Mine-use explosion-proof LED locomotive lights provide illumination for the workbench and work area, ensuring safe operation and maintenance in the dimly lit underground environment. An intrinsically safe wireless infrared camera is used to remotely observe the real-time situation inside the coal bunker for unclogging operations.

[0033] In addition, such as Figure 10 As shown, the remote visual control system includes an intrinsically safe mine-use remote control transmitter, an explosion-proof and intrinsically safe vehicle-mounted wireless receiver, a visual intrinsically safe mine-use handheld terminal, and an intrinsically safe mine-use base station. The visual terminal acquires and displays video footage from the equipment, collects and processes sensor data, and displays the real-time operating status of each component of the dredging machine, facilitating remote control operation on-site. It also uses a gas sensor to monitor for excessive gas levels and a pyroelectric temperature sensor to detect personnel approaching, thereby increasing safety.

[0034] In addition, the remote control system, through a mining intrinsically safe remote control transmitter, can collect the status of switches and handles in real time, transmit the information to a mining intrinsically safe vehicle-mounted wireless receiver via a wireless network, and drive the various actuators of the dredging machine. Operators control each actuator through the remote control and visual system, moving the multi-bladed drill bit to the blocked location.

[0035] In one preferred embodiment, the first telescopic mechanism 4 of this embodiment uses a three-stage telescopic cylinder to drive three interlocking rectangular tube structures, and the second telescopic mechanism 5 uses a two-stage telescopic cylinder to drive two interlocking rectangular tube structures. Furthermore, cameras 14 and lighting lamps 15 are installed on both sides of the second telescopic mechanism 5 to detect the sealing situation inside the coal bunker.

[0036] like Figures 4 to 6 As shown, the fixed assembly 3 includes a base plate 301 mounted on the workbench 2 and a column 302 connected to the base plate 301. The column 302 has a cuboid structure, with a first support 303 above the column 302 and a second support 304 below the column 302. The fixed end of the first drive unit 7 is pivotally connected to the first support 303, and the fixed end of the first telescopic mechanism 4 is pivotally connected to the second support 304. In this embodiment, the first drive unit 7 uses a hydraulic cylinder, and the column 302 has a cuboid structure. Combined with the fixed connection between the base plate 301 and the workbench 2, a rigid support frame is formed, which can effectively resist vibration and impact during dredging operations, ensure the overall stability of the equipment, and avoid affecting the accuracy of operations due to deformation under stress.

[0037] In addition, by setting the first support 303 and the second support 304 on different sides of the column 302, the force is distributed through the column 302, avoiding local stress concentration and improving the structural strength.

[0038] Preferably, such as Figures 4 to 6 As shown, the fixed end of the first telescopic mechanism 4 is provided with a first fixed seat 401. The first fixed seat 401 includes a body 4011, two first mounting plates 4012 connected opposite to one end of the body 4011, and a second support 304 disposed between the two first mounting plates 4012. A through first pin 402 is connected to the second support 304 and the first mounting plate 4012. The first mounting plate 4012 adopts a planar plate structure and is fixed to the body 4011 by welding. This connection structure ensures the connection strength between the first telescopic mechanism 4 and the fixed component 3, effectively avoids the torsional force generated by the drill bit assembly 6 during the unblocking operation, and provides stable support for the drill bit assembly 6.

[0039] In addition, such as Figures 4 to 6 As shown, the upper end of the main body 4011 is provided with two opposing second mounting plates 4013. The power output end of the first drive unit 7 is connected between the two second mounting plates 4013, and the two second mounting plates 4013 are connected to the first drive unit 7 through second pins 403. This arrangement is simple in structure and easy to install and disassemble. In order to reduce vibration, a shim is provided between the second mounting plate 4013 and the cylinder rod of the first drive unit 7 to increase the motion stability of the first telescopic mechanism 4. Correspondingly, a shim is also provided between the first mounting plate 4012 and the second seat to eliminate gaps and improve overall integrity.

[0040] In one specific implementation, the first drive unit 7 drives the first telescopic mechanism 4 to adjust its pitch by 30°. The telescopic distance of the first telescopic mechanism 4 is 6m. The first telescopic mechanism 4 can control its telescopic distance to ensure that the multi-wing drill bit 602 is delivered into the coal bunker opening.

[0041] Furthermore, still as Figures 4 to 6As shown, the tail end of the first telescopic mechanism 4 is provided with a second fixed seat 8, and a third drive unit 9 is connected to the second fixed seat 8. The power output end of the third drive unit 9 is connected to a transition seat 10, and the transition seat 10 is connected to the fixed end of the second telescopic mechanism 5. The third drive unit 9 drives the transition seat 10 to rotate relative to the second fixed seat 8.

[0042] Preferably, such as Figure 4 As shown, 10 includes a side plate connected to the power output end of the second drive unit 601, a support plate connected to the side plate, and the second telescopic mechanism 5 includes a telescopic body 501, a third mounting plate 502 connected to the fixed end of the telescopic body 501, and a cylindrical seat 503 connected to the tail end of the telescopic body 501. The second drive unit 601 has two power output ends, and the two side plates are respectively connected to the two sides of the support plate. The second drive unit 601 is mounted on the cylindrical seat 503.

[0043] In this embodiment, the third drive unit 9 adopts a dual-output rotary cylinder, which not only ensures the rotational power of the second telescopic mechanism 5, but also improves the motion stability of the second telescopic mechanism 5.

[0044] As a preferred embodiment, such as Figure 7 As shown, the support plate and the third mounting plate 502 are connected by an overload bolt 11. The overload bolt 11 includes a positioning section 1101, a main body section 1102 and a threaded section 1103. The positioning section 1101 abuts against the third mounting plate 502, and the threaded section 1103 extends to the outside of the third mounting plate 502 for connection with the locking nut 12. The main body section 1102 has an overload section 1104 formed in the middle, and the diameter of the overload section 1104 is smaller than that of the main body section 1102.

[0045] Combination Figure 4 , Figure 7 as well as Figure 9 As shown, the overload section 1104 is designed so that at the connection between the telescopic body 501 and the transition seat 10, when the second telescopic mechanism 5 is clearing the congestion in the coal bunker 13, if an avalanche is detected, a large amount of coal falling will cause the second telescopic mechanism 5 to bear an overload torque. The overload section 1104 will then undergo plastic fracture first, and the second telescopic mechanism 5 will rotate relative to the transition seat 10 and instantly fall, thereby protecting the main structure from damage and improving the reliability and safety of the equipment under complex working conditions. Preferably, the overload bolt 11 in this embodiment is made of copper to better achieve the purpose of overload fracture.

[0046] In addition, such as Figure 8As shown, the multi-blade drill bit 602 includes a central cylinder 6021, multiple connecting arms 6022 evenly distributed around the outer side of the central cylinder 6021, and an annular plate 6023 passing through the multiple connecting arms 6022. Several spaced-apart cutter heads 6024 are arranged along the extension direction of the connecting arms 6022. The central cylinder 6021 is keyed to the power output shaft of the second drive unit 601. By setting the annular plate 6023, the multiple connecting arms 6022 can be aligned axially along the central cylinder 6021, and a stable rigid frame structure for the drill bit can be formed. When the drill bit rotates, it can simultaneously drive multiple cutter heads 6024 to break up the inner wall or blockages of the coal bunker 13 at multiple points, improving the unblocking efficiency.

[0047] Meanwhile, the ring plate 6023 effectively distributes the working load, avoids stress concentration at a single point, reduces the risk of mechanical fatigue, and improves the service life of the drill bit assembly 6. Furthermore, by setting multiple cutter heads 6024 on the connecting arm 6022, when a single cutter head 6024 or connecting arm 6022 is damaged, it is not necessary to replace the entire drill bit; only the damaged parts need to be quickly disassembled and replaced, significantly reducing downtime.

[0048] Specifically, such as Figure 8 As shown, the connecting arm 6022 includes a straight segment 60221 and an inclined segment 60222. Multiple inclined segments 60222 form a tapered surface that gradually increases in size from the front end to the rear end. Multiple cutter heads 6024 extend along the straight segment 60221 and the inclined segment 60222. The tapered surface formed by the inclined segment 60222 results in a small front diameter and a gradually increasing rear diameter for the drill bit. This allows the drill bit to quickly cut into the blockage when entering the coal bunker 13. As the drill bit penetrates deeper, the drilling range gradually expands, effectively improving drilling efficiency and preventing instantaneous drill bit breakage.

[0049] Preferably, such as Figures 2 to 3 As shown, the workbench 2 includes a main frame 201, support legs 202 located below the main frame 201, and an inclined ladder 203 located between the main frame 201 and the ground. A detachable side frame 204 is provided at one end of the main frame 201 facing the coal bunker 13. An obstacle clearance groove 2011 is provided on the main frame 201 located below the first telescopic mechanism 4. When the unblocking machine is in operation, the side frame 204 is removed, and the first telescopic mechanism 4 can swing up and down through the obstacle clearance groove 2011.

[0050] As Figure 3As shown, the main frame 201 of the workbench 2 is set up to facilitate the maintenance and adjustment of the dredging machine. The detachable side frame 204 is set up so that the side frame 204 can be removed when the workbench 2 is in operation, so that the angle swing of the first telescopic mechanism 4 can be facilitated, the swing range can be increased, and the angle adjustment of the drill bit inserted into the coal bunker 13 can be facilitated. When not in operation, the side frame 204 can be reinstalled to enhance the overall safety of the workbench 2 and avoid safety accidents for maintenance personnel.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixed coal bunker unclogging machine, characterized in that: It includes a workbench (2) set on the upper end of the belt conveyor (1), a fixed component (3) set on the workbench (2), a first telescopic mechanism (4) pivotally connected to the fixed component (3), a second telescopic mechanism (5) pivotally connected to the tail end of the first telescopic mechanism (4), and a drill bit assembly (6) connected to the tail end of the second telescopic mechanism (5). The fixed component (3) is also provided with a first drive part (7) for driving the first telescopic mechanism (4) to rotate. The first drive part (7) is used to adjust the angle of the first telescopic mechanism (4) swinging up and down along the worktable (2). The drill bit assembly (6) includes a second drive unit (601) and a multi-bladed drill bit (602) disposed at the power output end of the second drive unit (601), wherein the second drive unit (601) drives the multi-bladed drill bit (602) to rotate.

2. The fixed coal bunker unblocking machine according to claim 1, characterized in that: The fixing component (3) includes a base plate (301) disposed on the workbench (2) and a column (302) connected to the base plate (301), the column (302) having a cuboid structure; A first support (303) is provided above the column (302), and a second support (304) is provided below the column (302). The fixed end of the first drive unit (7) is pivotally connected to the first support (303), and the fixed end of the first telescopic mechanism (4) is pivotally connected to the second support (304).

3. A fixed coal bunker unclogging machine according to claim 2, characterized in that: The first telescopic mechanism (4) has a first fixed seat (401) at its fixed end. The first fixed seat (401) includes a body (4011) and two first mounting plates (4012) connected to one end of the body (4011). The second support (304) is disposed between the two first mounting plates (4012), and the second support (304) is connected to the first mounting plate (4012) by a through first pin (402).

4. A fixed coal bunker unblocking machine according to claim 3, characterized in that: The upper end of the main body (4011) is provided with two opposing second mounting plates (4013). The power output end of the first drive unit (7) is connected between the two second mounting plates (4013). The two second mounting plates (4013) are connected to the first drive unit (7) through a second pin (403).

5. A fixed coal bunker unclogging machine according to claim 3, characterized in that: The tail end of the first telescopic mechanism (4) is provided with a second fixed seat (8), and a third drive unit (9) is connected to the second fixed seat (8). The power output end of the third drive unit (9) is connected to a transition seat (10), and the transition seat (10) is connected to the fixed end of the second telescopic mechanism (5). The third drive unit (9) drives the transition seat (10) to rotate relative to the second fixed seat (8).

6. A fixed coal bunker unclogging machine according to claim 5, characterized in that: The transition seat (10) includes a side plate connected to the power output end of the second drive unit (601), a support plate connected to the side plate, and the second telescopic mechanism (5) includes a telescopic body (501), a third mounting plate (502) connected to the fixed end of the telescopic body (501), and a cylindrical seat (503) connected to the tail end of the telescopic body (501). The second drive unit (601) has two power output ends, and the two side plates are respectively connected to both sides of the support plate; The second drive unit (601) is mounted on the cylindrical seat (503).

7. A fixed coal bunker unblocking machine according to claim 6, characterized in that: The support plate and the third mounting plate (502) are connected through an overload bolt (11). The overload bolt (11) includes a positioning section (1101), a main body section (1102) and a threaded section (1103). The positioning section (1101) abuts against the third mounting plate (502), and the threaded section (1103) extends to the outside of the third mounting plate (502) for connection with a lock nut (12). The main body segment (1102) has an overload section formed in the middle, and the diameter of the overload section is smaller than that of the main body segment (1102).

8. A fixed coal bunker unclogging machine according to claim 1, characterized in that: The multi-wing drill bit (602) includes a central cylinder (6021), a plurality of connecting arms (6022) evenly distributed around the outside of the central cylinder (6021), and an annular plate (6023) passing through the plurality of connecting arms (6022). A plurality of spaced-apart cutter heads (6024) are provided along the extension direction of the connecting arm (6022), and the central cylinder (6021) is keyed to the power output shaft of the second drive unit (601).

9. A fixed coal bunker unblocking machine according to claim 8, characterized in that: The connecting arm (6022) includes a straight segment (60221) and an inclined segment (60222). Multiple inclined segments (60222) form a tapered surface that gradually increases in size from the front end to the rear end. Multiple cutter heads (6024) extend along the straight segment (60221) and the inclined segment (60222).

10. A fixed coal bunker unclogging machine according to claim 8, characterized in that: The workbench (2) includes a main frame (201), a support leg (202) located below the main frame (201), and an inclined ladder (203) located between the main frame (201) and the ground. The main frame (201) is provided with a detachable side frame (204) at one end facing the coal bunker (13). The main frame (201) is provided with a clearance groove (2011) located below the first telescopic mechanism (4). When the dredging machine is in working condition, the side frame (204) is removed, and the first telescopic mechanism (4) can swing up and down through the clearance groove (2011).

Images