Settling type crank arm coal bunker cleaning device

Abstract

The invention relates to the field of coal bunker cleaning devices, in particular to a settling type crank arm coal bunker cleaning device, and provides the following scheme aiming at the problems that a coal bunker cleaning device in the prior art is inconvenient to adjust and easy to remain: the settling type crank arm coal bunker cleaning device comprises a mounting assembly, the sliding rails are installed at the tops of the two sides of the foundation frame, the support is connected to the tops of the two sliding rails in a sliding mode, two sliding plates are installed at the bottom of the support, an installation base is rotationally connected to the support, and a steering assembly used for driving the installation base to rotate is installed on the support; and the telescopic mechanism comprises a second-stage telescopic rod mounted on the mounting seat and a multi-stage crank arm mounted on the second-stage telescopic rod. According to the coal bunker cleaning device, clogging parts in a coal bunker and cakes on the inner wall can be conveniently cleaned, the inner wall of the coal bunker can be purged and beaten in the process of cleaning coal briquettes on the inner wall of the coal bunker, and therefore falling of the coal briquettes on the inner wall of the coal bunker can be further accelerated.

Description

Technical Field

[0001] The present invention relates to the field of coal bunker cleaning devices, and particularly to a settling articulated boom coal bunker cleaning device. Background Art

[0002] In the coal storage and transportation system, as a key coal storage facility, the coal bunker is prone to blockage and caking of coal at the bottom and inner wall after long-term operation due to reasons such as high coal humidity, particle adhesion, or uneven stacking. If such problems are not dealt with in time, it will lead to a decrease in the effective volume of the coal bunker, blockage of the discharge port, and even potential structural safety hazards. Traditional cleaning methods mainly rely on manual labor or fixed mechanical devices.

[0003] When using manual cleaning, workers need to enter the interior of the enclosed coal bunker, facing the risks of oxygen deficiency and collapse. Existing mechanical devices have insufficient adaptability. Usually, they are straight-arm cleaning equipment, which is prone to situations where it is difficult to reach the narrow area at the bottom of the coal bunker due to the limitation of the rigid structure. Moreover, when dealing with the caked coal on the inner wall of the coal bunker, the common method of existing mechanical cleaning devices is the knocking method. Although this method can quickly break the adhered coal blocks, it is easy to leave small pieces of coal on the inner wall of the coal bunker, resulting in incomplete cleaning. Therefore, this solution proposes a settling articulated boom coal bunker cleaning device. Summary of the Invention

[0004] The settling articulated boom coal bunker cleaning device proposed by the present invention solves the problems of inconvenient adjustment and easy residue of the existing coal bunker cleaning devices.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A settling articulated boom coal bunker cleaning device, comprising:

[0007] An installation assembly, which includes a base frame, slide rails installed on the tops of both sides of the base frame, and a bracket slidably connected to the tops of the two slide rails. Two sliding plates are installed at the bottom of the bracket. A mounting seat is rotatably connected to the bracket, and a steering assembly for driving the mounting seat to rotate is installed on the bracket;

[0008] A telescopic mechanism, which includes a secondary telescopic rod installed on the mounting seat and a multi-stage articulated boom installed on the secondary telescopic rod;

[0009] A cleaning mechanism, which is detachably fixed to the end of the multi-stage articulated boom and is used for cleaning the coal blocks on the inner wall of the coal bunker. The cleaning mechanism includes a housing, an impact assembly and a purging assembly installed on the housing, and a knocking mechanism installed on the outer periphery of the housing;

[0010] The impact assembly includes a second telescopic member installed in the housing, a connecting plate fixed to the output end of the second telescopic member, and an impact rod fixed to the bottom surface of the connecting plate, and the other end of the impact rod extends below the bottom of the housing. The purging assembly includes an annular pipe installed on the bottom surface of the housing and a gas distribution member installed in the housing for supplying gas into the annular pipe when the connecting plate moves. A plurality of nozzles are installed on the bottom surface of the annular pipe;

[0011] The knocking mechanism includes two swing arms installed on the outer wall of the housing through connecting members and a transmission member installed in the housing and driving the swing arms to swing reciprocally, and the transmission member is in transmission connection with the connecting plate.

[0012] Through the above technical solution, it is not only convenient to clean the blocked part inside the coal bunker and the caking on the inner wall, but also the inner wall of the coal bunker can be purged and knocked during the process of cleaning the coal blocks on the inner wall of the coal bunker, so that the coal blocks on the inner wall of the coal bunker can fall off more quickly.

[0013] As a further improvement of the above solution, two sliding plates are fixed to the bottom of the bracket, and rollers rollingly connected to the slide rail are fixed to the bottoms of the two sliding plates. A slide lock for locking the sliding plate is installed on the outer wall of one side of the slide rail.

[0014] As a further improvement of the above solution, the steering assembly includes a toothed ring rotatably connected to the top of the bracket and a steering motor installed on the top of the bracket. One end of the output shaft of the steering motor is fixed with a driving gear, and the driving gear meshes with the inner ring of the toothed ring.

[0015] As a further improvement of the above solution, the multi-stage curved arm includes a plurality of articulated connecting rods and a first telescopic member articulated on the connecting rod. The other end of the first telescopic member is articulated on the outer wall of an adjacent connecting rod. The other end of the first telescopic member on the connecting rod at the head of the multi-stage curved arm is articulated on the outer wall of the second telescopic rod.

[0016] As a further improvement of the above solution, a connecting sleeve is fixed to the top of the housing, and a locking bolt is threadedly connected to the outer periphery of the connecting sleeve. One end of a connecting rod at the end of the multi-stage curved arm is sleeved in the connecting sleeve, and one end of the locking bolt abuts against the outer periphery of the connecting rod.

[0017] Through the above technical solution, the disassembly and assembly between the cleaning mechanism and the multi-stage curved arm are facilitated.

[0018] As a further improvement of the above solution, the gas distribution member includes a gas cylinder installed in the housing, a piston plate installed inside the gas cylinder, and a piston rod fixed to the bottom surface of the piston plate. The bottom of the piston rod is fixedly connected to the top surface of the connecting plate. An air inlet pipe and an air outlet pipe are fixed to the top of the gas cylinder. The other end of the air inlet pipe extends outside the housing and is installed with a filter screen. The other end of the air outlet pipe extends below the housing and is communicated with the annular pipe. One-way valves are installed on both the air inlet pipe and the air outlet pipe.

[0019] Through the above technical solution, the gas distribution component can be driven to continuously supply gas to the annular tube during the movement of the connecting plate.

[0020] As a further improvement of the above scheme, the connecting member includes a fixed plate fixed to the outer periphery of the outer shell and a fixed shaft rotatably connected to the bottom surface of the fixed plate, one end of the swing arm is fixedly connected to the outer periphery of the fixed shaft, and a knocking hammer is fixed to the other end of the swing arm, and a connecting gear is sleeved on the outer periphery of the fixed shaft.

[0021] Through the above technical solution, the rotation of the fixed shaft is used to drive the swing arm to swing. When the knocking hammer hits the inner wall of the coal bunker, the inner wall of the coal bunker can vibrate, which helps to shake off the coal blocks adhered to the inner wall of the coal bunker.

[0022] As a further improvement of the above scheme, two transmission members are provided, and the two transmission members are respectively used to drive the two swing arms to rotate, and the linkage mechanism includes a mounting shaft rotatably connected to the inner wall of the outer shell, a reciprocating member installed at the other end of the mounting shaft for driving the connecting gear to rotate, and a linkage rack fixed on the side wall of the connecting plate, and a linkage gear meshing with the linkage rack is sleeved on the outer periphery of the mounting shaft.

[0023] As a further improvement of the above scheme, the reciprocating member includes a rotating wheel fixed on the mounting shaft, a toggle column fixed on the circular surface of the rotating wheel away from the mounting shaft, a fixed frame sleeved on the outer periphery of the toggle column, and a transmission rack fixed on the long side of one side of the fixed frame. A through hole for the transmission rack to pass through is opened on the outer shell, and the other end of the transmission rack passes through the through hole and meshes with the connecting gear.

[0024] As a further improvement of the above solution, the impact rod is coaxially arranged with the annular tube, and the plurality of nozzles are inclined toward the bottom of the impact rod.

[0025] The above technical solution makes it easier to blow away the broken coal blocks, so that they can fall off the inner wall of the coal seam more quickly.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Through the coordination between the installation assembly and the telescopic mechanism, after the multi-stage crank arm is extended, the cleaning mechanism can be sent into the coal bunker, so as to conveniently clean the blockage at the bottom of the coal bunker. The setting of the steering assembly can conveniently drive the multi-stage crank arm and the cleaning mechanism to rotate, thereby facilitating the cleaning of different positions inside the coal bunker.

[0028] 2. By setting up a cleaning mechanism, the coal blocks adhered to the inner wall of the coal bunker can be broken by the continuous impact of the impact rod. During the reciprocating impact of the impact rod, the purging assembly can also be driven to work, continuously sucking outside air into the air cylinder, then pressing the air in the air cylinder into the annular pipe and spraying it out from the nozzle, so as to purge the broken coal blocks on the inner wall of the coal bunker, which can further promote the falling of the coal blocks on the inner wall of the coal bunker.

[0029] 3. By setting up a knocking mechanism, the swing arm can be driven to swing reciprocally during the reciprocating impact of the impact rod, so that the knocking hammer continuously knocks on the inner wall of the coal bunker, which can further help the coal blocks on the inner wall of the coal bunker to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural view of the present invention;

[0031] Figure 2 is a top view of the present invention;

[0032] Figure 3 is a left view of the present invention;

[0033] Figure 4 is a front view of the present invention;

[0034] Figure 5 is a schematic structural view of the cleaning mechanism;

[0035] Figure 6 is a cross-sectional view of the cleaning mechanism;

[0036] Figure 7 This Figure 6 is an enlarged view of part A in

[0037] Figure 8 is a schematic structural view of the first telescopic member and the air cylinder;

[0038] Figure 9 is a schematic structural view of the bottom surface of the outer shell.

[0039] MAIN SYMBOL DESCRIPTION:

[0040] 1. Base frame; 2. Multi-stage curved arm; 201. Connecting rod; 202. First telescopic member; 3. Bracket; 4. Tooth ring; 5. Mounting seat; 6. Second telescopic rod; 7. Slide rail; 8. Slide lock; 9. Cleaning mechanism; 10. Steering motor; 11. Slide plate; 901. Housing; 902. Connecting sleeve; 903. Impact rod; 904. Ring pipe; 905. Swing arm; 906. Connecting gear; 907. Hammer; 908. Second telescopic member; 909. Piston rod; 910. Connecting plate; 911. Nozzle; 912. Mounting shaft; 913. Linkage gear; 914. Air outlet pipe; 915. Air cylinder; 916. Air inlet pipe; 917. Linkage rack; 918. Runner; 919. Fixed frame; 920. Poking column; 921. Transmission rack; 922. Fixed shaft. Detailed implementation mode

[0041] Next, in combination with the accompanying drawings and the detailed implementation mode, the present invention will be further described. It should be noted that on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0042] Embodiment 1:

[0043] Please combine Figure 1 - Figure 9 , the settling type curved arm coal bunker cleaning device of this embodiment includes:

[0044] Installation assembly, which includes a base frame 1, slide rails 7 installed on the top of both sides of the base frame 1, and a bracket 3 slidably connected to the top of the two slide rails 7. Two slide plates 11 are installed at the bottom of the bracket 3. Two slide plates 11 are fixed at the bottom of the bracket 3. Roller wheels that are fixedly connected to the slide rails 7 are installed at the bottom of the two slide plates 11. A slide lock 8 for locking the slide plate 11 is installed on the outer wall of one side of the slide rail 7. The settings of the roller wheels and the slide plate 11 enable the bracket 3 to move along the length direction of the slide rail 7, while the setting of the slide lock 8 can lock the slide plate 11 on the slide rail 7, thereby preventing it from moving further and achieving the purpose of positioning the bracket 3.

[0045] A mounting seat 5 is rotatably connected to the bracket 3, and a steering component for driving the mounting seat 5 to rotate is installed on the bracket 3. The steering component includes a tooth ring 4 rotatably connected to the top of the bracket 3 and a steering motor 10 installed on the top of the bracket 3. One end of the output shaft of the steering motor 10 is fixed with a driving gear, and the driving gear meshes with the inner ring of the tooth ring 4. When the steering motor 10 rotates, it will drive the driving gear to rotate. After the driving gear 4 rotates, it drives the tooth ring 4 to rotate, and the tooth ring 4 then drives the mounting seat 5 to rotate.

[0046] A telescopic mechanism, which includes a secondary telescopic rod 6 mounted on a mounting base 5 and a multi-stage curved arm 2 mounted on the secondary telescopic rod 6. The multi-stage curved arm 2 includes a plurality of articulated connecting rods 201 and a first telescopic member 202 articulated on the connecting rod 201. The other end of the first telescopic member 202 is articulated to the outer wall of one of the adjacent connecting rods 201. The other end of the first telescopic member 202 on the connecting rod 201 at the head end of the multi-stage curved arm 2 is articulated to the outer wall of the secondary telescopic rod 6. When cleaning the inside of the coal bunker, first extend the secondary telescopic rod 6, thereby driving the multi-stage curved arm 2 to sink. After the secondary telescopic rod 6 extends to a set length, then unfold the multi-stage curved arm 2. During the unfolding process, the first telescopic member 202 extends, thereby gradually unfolding the folded plurality of connecting rods 201. The end of the multi-stage curved arm 2 can reach the bottom of the coal bunker, thus facilitating the cleaning of the blockage inside the coal bunker. At this time, by driving the steering component, the multi-stage curved arm 2 can be driven to rotate, and when moving the mobile support 3, the multi-stage curved arm 2 can also be driven to move, so that the position of the end of the multi-stage curved arm 2 can be conveniently adjusted.

[0047] A cleaning mechanism 9, which is detachably fixed to the end of the multi-stage curved arm 2 and is used to clean the coal blocks on the inner wall of the coal bunker. A connecting sleeve 902 is fixed to the top of the outer shell 901. The outer circumference of the connecting sleeve 902 is threadedly connected with a locking bolt 923. One end of a connecting rod 201 at the end of the multi-stage curved arm 2 is sleeved inside the connecting sleeve 902, and one end of the locking bolt 923 abuts against the outer circumference of the connecting rod 201. When installing the cleaning mechanism 9, just insert the end of the multi-stage curved arm 2 into the connecting sleeve 902, and then tighten the locking bolt 923 so that one end of the locking bolt 923 abuts tightly against the outer circumference of the connecting rod 201, then the installation of the cleaning mechanism can be completed. On the contrary, when disassembling, loosen the locking bolt 923, and then it can be removed from the connecting rod 201.

[0048] The cleaning mechanism 9 includes an outer shell 901, an impact component and a purging component mounted on the outer shell 901. The impact component includes a second telescopic member 908 mounted inside the outer shell 901, a connecting plate 910 fixed to the output end of the second telescopic member 908, and an impact rod 903 fixed to the bottom surface of the connecting plate 910, and the other end of the impact rod 903 extends below the bottom of the outer shell 1. The second telescopic member 908 is connected to an external control mechanism through a wire. After the cleaning mechanism enters the inner wall of the coal bunker as the multi-stage curved arm 2 extends, by adjusting the length and position of the multi-stage curved arm, the impact rod 903 in the cleaning mechanism 9 is brought into contact with the area to be cleaned on the inner wall of the coal seam. Then start the telescopic member 908. The telescopic member 908 continuously contracts, thereby driving the connecting plate 910 to move back and forth continuously, and further driving the impact rod 903 to move back and forth. After the impact rod 903 contacts the coal blocks on the inner wall of the coal bunker, the coal blocks will be shattered and fall off from the inner wall of the coal bunker, thus achieving the purpose of cleaning the coal bunker.

[0049] The purging assembly includes an annular pipe 904 installed on the bottom surface of the outer shell 1 and a gas distribution component installed inside the outer shell 1 for supplying gas into the annular pipe 904 when the connecting plate 910 moves. A plurality of nozzles 911 are installed on the bottom surface of the annular pipe 904. The gas distribution component includes a cylinder 915 installed inside the outer shell 9, a piston plate installed inside the cylinder 915, and a piston rod 909 fixed to the bottom surface of the piston plate. The bottom of the piston rod 909 is fixedly connected to the top surface of the connecting plate 910. An air inlet pipe 916 and an air outlet pipe 914 are fixed to the top of the cylinder 915. The other end of the air inlet pipe 916 extends outside the outer shell 901 and is equipped with a filter screen. The other end of the air outlet pipe 914 extends below the outer shell 901 and is communicated with the annular pipe 904. One-way valves are installed on both the air inlet pipe 916 and the air outlet pipe 914. During the process of the connecting plate 910 reciprocatingly moving following the expansion and contraction of the second telescopic member 908, it will drive the piston rod 909 to continuously reciprocate. When the second telescopic member 908 expands and contracts, the connecting plate 910 approaches the cylinder 915, and the piston rod 909 moves into the cylinder 915, thereby inputting the air in the cylinder 915 into the annular pipe 904 through the air outlet pipe 914. Finally, the air is ejected from the nozzles 911 and blows on the inner wall of the coal bunker, so that the broken coal blocks on the inner wall of the coal bunker can be blown down, achieving the effect of further cleaning the inner wall of the coal seam. When the second telescopic member 908 extends, it will drive the piston rod 909 to move outside the cylinder 915, thereby sucking the outside air into the cylinder 915 through the air inlet pipe 916, and the filter screen can filter the air entering the air inlet pipe 914 during this process, achieving the effect of dust filtration.

[0050] In this embodiment, both the first telescopic member 202 and the second telescopic member 908 are one of an electric telescopic rod or a hydraulic cylinder.

[0051] Embodiment 2:

[0052] Combined with Figure 9 , on the basis of Embodiment 1, the further improvement of this embodiment lies in that the impact rod 903 is coaxially arranged with the annular pipe 904, and a plurality of nozzles 911 are all inclined towards the bottom of the impact rod 903. Through this setting, the air ejected from the nozzles 911 can blow on the part where the impact rod 903 breaks the coal blocks, thereby accelerating the falling of the broken coal blocks, and at the same time, some fine coal blocks can also be blown down from the inner wall of the coal bunker.

[0053] Embodiment 3:

[0054] Combined with Figure 6 - Figure 9, on the basis of Embodiment 1 - Embodiment 2, the further improvement of this embodiment lies in that: a knocking mechanism is installed on the outer periphery of the outer shell 901. The knocking mechanism includes two swing arms 905 installed on the outer wall of the outer shell 901 through connecting pieces and a transmission piece installed inside the outer shell 901 and used to drive the swing arms 905 to swing reciprocally. And the transmission piece is in transmission connection with the connecting plate 910. The connecting piece includes a fixing plate fixed on the outer periphery of the outer shell 901 and a fixed shaft 922 rotatably connected to the bottom surface of the fixing plate. One end of the swing arm 905 is fixedly connected to the outer periphery of the fixed shaft 922, and a knocking hammer 907 is fixed to the other end of the swing arm 905. A connecting gear 906 is sleeved on the outer periphery of the fixed shaft 922. There are two transmission pieces, and the two transmission pieces are respectively used to drive the two swing arms 905 to rotate. The linkage mechanism includes a mounting shaft 912 rotatably connected to the inner wall of the outer shell 901, a reciprocating piece installed at the other end of the mounting shaft 912 and used to drive the connecting gear 906 to rotate, and a linkage rack 917 fixed on the side wall of the connecting plate 910. A linkage gear 913 meshing with the linkage rack 917 is sleeved on the outer periphery of the mounting shaft 912. During the reciprocating movement of the connecting plate 910, it will drive the linkage rack 917 to move reciprocally continuously. After the linkage rack 917 moves, it will drive the linkage gear 913 to rotate. When the linkage rack 917 moves in different directions, it will drive the linkage gear 913 to rotate in different directions. After the linkage gear 913 rotates, it will drive the mounting shaft 912 to rotate synchronously, and then the reciprocating piece can be driven to operate. After the reciprocating piece operates, it will drive the connecting gear 906 to rotate reciprocally, thereby driving the fixed shaft 922 to rotate reciprocally. The swing arm 905 swings reciprocally continuously as the fixed shaft 922 rotates reciprocally, thereby driving the knocking ball 907 to knock repeatedly on the inner wall of the coal bunker, so that while the impact rod 903 reciprocates telescopically, the purpose of knocking on the inner wall of the coal seam to assist the coal blocks on the inner wall of the coal bunker to fall can be achieved.

[0055] The length of the linkage rack 917 is 2 - 3 times the circumference of the linkage gear 913, so that during the upward or downward movement of the connecting plate 910, the linkage gear 913 can be driven to rotate multiple times, so that the purpose of driving the swing arm 905 to swing multiple times during the extension or contraction of the impact rod 903 can be achieved, and thus the inner wall of the coal seam can be knocked multiple times.

[0056] The reciprocating member includes a rotating wheel 918 fixed on the mounting shaft 912, a toggle post 920 fixed on the circular surface of the rotating wheel 918 away from the mounting shaft 912, a fixed frame 919 sleeved on the outer periphery of the toggle post 920, and a transmission rack 921 fixed on the long side of one side of the fixed frame 919. The inner wall length of the fixed frame 919 is greater than the rotation diameter of the toggle post 920. A through hole is provided on the outer shell 901 for the transmission rack 921 to pass through. The other end of the transmission rack 921 passes through the through hole and meshes with the connecting gear 906. When the mounting shaft 912 rotates, the rotating wheel 918 is driven to rotate, and the transmission rack 921 is engaged in the through hole. Therefore, during the rotation of the rotating wheel 918, the toggle post 920 can drive the fixed frame 919 to move back and forth, and the transmission rack 921 moves synchronously with the fixed frame 919, so that the connecting gear 906 can be driven to rotate back and forth continuously, and finally the purpose of driving the swing arm 905 to swing during the extension and retraction of the impact rod 903 is achieved.

[0057] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. The sedimentation type crank arm coal bunker cleaning device is characterized by: include: The installation assembly includes a base frame, slide rails installed on the top of both sides of the base frame, and a bracket slidably connected to the top of the two slide rails, two slide plates are installed at the bottom of the bracket, a mounting seat is rotatably connected to the bracket, and a steering assembly for driving the mounting seat to rotate is installed on the bracket; A telescopic mechanism, comprising a secondary telescopic rod mounted on a mounting seat and a multi-stage curved arm mounted on the secondary telescopic rod; A cleaning mechanism, which is detachably fixed to the end of the multi-stage crank arm and is used to clean the coal blocks on the inner wall of the coal bunker, the cleaning mechanism comprising a shell, an impact assembly and a purge assembly installed on the shell, and a knocking mechanism installed on the outer periphery of the shell; The impact assembly includes a telescopic member 2 installed in the housing, a connecting plate fixed to the output end of the telescopic member 2 and an impact rod fixed to the bottom surface of the connecting plate, and the other end of the impact rod extends below the bottom of the housing. The purge assembly includes an annular tube installed on the bottom surface of the housing and a gas distribution member installed in the housing for supplying gas to the annular tube when the connecting plate moves, and a plurality of nozzles are installed on the bottom surface of the annular tube; The striking mechanism comprises two swing arms mounted on the outer wall of the housing through a connecting member and a transmission member mounted in the housing and driving the swing arms to swing back and forth, and the transmission member is in transmission connection with the connecting plate.

2. The sinking type crank arm coal bunker cleaning device according to claim 1 is characterized in that: Two slide plates are fixed at the bottom of the bracket, rollers rollingly connected to the slide rails are fixed at the bottom of the two slide plates, and a slide lock for locking the slide plates is installed on an outer wall of one side of the slide rail.

3. The sinking type crank arm coal bunker cleaning device according to claim 1 is characterized in that: The steering assembly comprises a gear ring rotatably connected to the top of the bracket and a steering motor installed on the top of the bracket. A driving gear is fixed to one end of the output shaft of the steering motor, and the driving gear is meshed with the inner ring of the gear ring.

4. The sinking type crank arm coal bunker cleaning device according to claim 1 is characterized in that: The multi-stage crank arm includes multiple hinged connecting rods and a telescopic part hinged on the connecting rods, the other end of the telescopic part is hinged to the outer wall of an adjacent connecting rod, and the other end of the telescopic part on the connecting rod at the head end of the multi-stage crank arm is hinged to the outer wall of the secondary telescopic rod.

5. The sinking type crank arm coal bunker cleaning device according to claim 1 is characterized in that: A connecting sleeve is fixed on the top of the shell, and a locking bolt is threadedly connected to the outer periphery of the connecting sleeve. One end of a connecting rod at the end of the multi-stage crank arm is sleeved in the connecting sleeve, and one end of the locking bolt abuts against the outer periphery of the connecting rod.

6. The sinking type crank arm coal bunker cleaning device according to claim 1 is characterized in that: The gas distribution component includes an air cylinder installed in the outer shell, a piston plate installed inside the air cylinder and a piston rod fixed to the bottom surface of the piston plate. The bottom of the piston rod is fixedly connected to the top surface of the connecting plate. An air inlet pipe and an air outlet pipe are fixed to the top of the air cylinder. The other end of the air inlet pipe extends to the outside of the outer shell and is installed with a filter. The other end of the air outlet pipe extends to the bottom of the outer shell and is connected to the ring pipe. Both the air inlet pipe and the air outlet pipe are installed with a one-way valve.

7. The sinking type crank arm coal bunker cleaning device according to claim 6 is characterized in that: The connecting member includes a fixed plate fixed to the outer periphery of the shell and a fixed shaft rotatably connected to the bottom surface of the fixed plate. One end of the swing arm is fixedly connected to the outer periphery of the fixed shaft, and a striking hammer is fixed to the other end of the swing arm. A connecting gear is sleeved on the outer periphery of the fixed shaft.

8. The sinking type crank arm coal bunker cleaning device according to claim 7 is characterized in that: There are two transmission members, and the two transmission members are respectively used to drive the two swing arms to rotate. The linkage mechanism includes a mounting shaft rotatably connected to the inner wall of the outer shell, a reciprocating member installed at the other end of the mounting shaft for driving the connecting gear to rotate, and a linkage rack fixed on the side wall of the connecting plate. The outer periphery of the mounting shaft is sleeved with a linkage gear meshing with the linkage rack.

9. The sinking type crank arm coal bunker cleaning device according to claim 8, characterized in that: The reciprocating member includes a rotating wheel fixed on the mounting shaft, a toggle post fixed on the circular surface of the rotating wheel away from the mounting shaft, a fixed frame sleeved on the outer circumference of the toggle post, and a transmission rack fixed on the long side of one side of the fixed frame. A through hole is opened on the outer shell for the transmission rack to pass through, and the other end of the transmission rack passes through the through hole and meshes with the connecting gear.

10. The sinking type crank arm coal bunker cleaning device according to claim 1, characterized in that: The impact rod is coaxially arranged with the annular tube, and the plurality of nozzles are all arranged obliquely toward the bottom of the impact rod.

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