A cantilever type tunneling machine for coal mining and its safety monitoring system

Abstract

The invention discloses a cantilevered tunneling machine for coal mining and a safety monitoring system thereof, and the invention relates to the technical field of coal mining. The cantilevered tunneling machine for coal mining and a safety monitoring system thereof comprise a tunneling machine body, a tunneling machine unit installed at the front end of the tunneling machine body, a feeding machine unit installed below the tunneling machine unit, and an upper conveying machine unit and a lower conveying machine unit connected to the feeding machine unit, a partitioning assembly for increasing the interval between ore drop points and a primary selection assembly for assisting coal selection are arranged at the end of the upper conveying machine unit, and the partitioning assembly comprises: a power gear fixed on the support shaft of the upper conveying machine unit to provide power to the partitioning assembly; a driven gear meshed on the power gear to transmit power to other parts of the partitioning assembly; the mutual interference between small pieces of coal and large pieces of coal is reduced, and a small amount of crushed ore mixed in the upper conveying machine unit can be screened out, so that the screening process is more efficient, and the primary selection is completed during the transportation process.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, in particular to a cantilever type tunneling machine for coal mining and a safety monitoring system thereof. Background Art

[0002] The cantilever TBM (tunnel boring machine) has the function of swinging up and down and left and right to dig, which is more suitable for special-shaped sections. The cantilever TBM is small in size and more flexible in transfer. It is now more and more widely used, especially in the field of coal mining. With the rapid development of comprehensive coal mining mechanization in the mining face, coal mines have higher and higher requirements for tunnel excavation speed. In order to improve the speed of mining tunnels, cantilever tunnel boring machines have been vigorously developed and gradually improved. In the process of mining coal mines, although the existing cantilever tunnel boring machines use double-layer conveying to transport the mined coal ore, they do not separate the transported coal ore, which makes the mined coal ore Coal ores of various sizes are mixed together and then subjected to unified coal preparation, which increases the overall process and reduces production efficiency. For example, a coal mine developed using a cantilevered tunneling machine disclosed in announcement number CN212250021U can operate accurately in dark tunnels, but the mined coal is piled up under the tunneling machine and cannot be transported away in time, slowing down the progress of coal mining. There are also machines that can transport coal ore, but they can only transport and cannot perform preliminary coal preparation, which increases the overall process and reduces production efficiency. Therefore, a coal mine developed using a cantilevered tunneling machine and a safety monitoring system thereof are proposed. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a cantilever roadheader for coal mining and a safety monitoring system thereof, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A cantilevered tunneling machine for coal mining, comprising a tunneling machine body, a tunneling unit installed at the front end of the tunneling machine body, a feeding unit installed below the tunneling unit, and an upper conveying unit and a lower conveying unit connected to the feeding unit, wherein a partition assembly for increasing the interval between ore drop points and a primary selection assembly for assisting coal selection are provided at the end of the upper conveying unit, and the partition assembly includes:

[0005] A power gear is fixed on the support shaft of the upper conveyor assembly to provide power to the separation assembly;

[0006] A driven gear meshes with the power gear to transmit power to other parts of the separation assembly;

[0007] The installation shaft is movably mounted on the end of the upper conveyor unit through the bearing;

[0008] The guide plate is fixedly mounted on the mounting shaft to change the landing point of the ore.

[0009] Preferably, the partition assembly further includes:

[0010] A mounting plate, one end of which is fixed to the side wall of the upper conveyor unit and the other end of which provides support for the rotating shaft;

[0011] A stopper, fixed on the side wall of the guide plate and cooperating with the toggle rod to deflect the guide plate;

[0012] One end of the rotating shaft is fixed on the side wall of the driven gear, and the other end is fixed with a toggle rod for deflecting the material guide plate.

[0013] Preferably, the preliminary selection components include:

[0014] The power bevel gear is fixedly mounted on the rotating shaft to provide power to the primary selection assembly;

[0015] The driven bevel gear meshes with the power bevel gear to transmit power;

[0016] The movable shaft has one end fixed on the driven bevel gear and the other end fixed with an adjusting gear. One end of the movable shaft is movably inserted into the mounting plate, and a screening hole is opened on the surface of the guide plate.

[0017] Preferably, the preliminary selection component also includes:

[0018] A rack meshing with an adjusting gear to transmit power, wherein the adjusting gear is a half gear;

[0019] A limit rod, one end of which is slidably inserted into the rack and the other end of which is fixed with a mounting plate;

[0020] Spring 1 has one end fixed on the limit rod and the other end fixed in the rack to provide elastic force for the rack to reset.

[0021] Preferably, the preliminary selection component also includes:

[0022] A support rod, one end of which is mounted on the rack to transmit power;

[0023] The fixed shaft has one end fixed to the bottom of the support rod and the other end fixed with a toggle plate, and the bottom of the toggle plate abuts against the material guide plate.

[0024] Preferably, the preliminary selection component also includes:

[0025] The adjusting shaft has one end fixed to one end of the rack and the other end movably mounted with a limit plate;

[0026] A sliding rod, one end of which is fixed in the limit plate, and the other end of which is slidably inserted into the rack to limit the limit plate;

[0027] The guide rod has one end fixed on the adjustment shaft and the other end slidingly penetrates the support rod for guiding and limiting.

[0028] The baffle rod is fixed on the side wall of the support rod. A positioning rod is abutted on the side wall of the baffle rod. A toggle plate is fixed on the other end of the positioning rod. The top of the toggle plate is movably mounted on the bottom of the support rod through a fixed shaft.

[0029] The present invention also provides a safety monitoring system suitable for a cantilever tunneling machine used in coal mine development, comprising a monitoring module, wherein the signal output end of the monitoring module is connected to the signal receiving end of the alarm module, the signal output end of the alarm module is connected to the signal receiving end of the communication module, and the signal output end of the communication module is connected to the signal receiving end of the dispatch module.

[0030] Preferably, the monitoring module is installed on the conveyor group to detect the operating status of the conveyor group, and the monitoring module specifically includes a temperature sensor, a displacement sensor and a vibration sensor.

[0031] The present invention provides a cantilevered tunneling machine for coal mining and a safety monitoring system thereof. Compared with the prior art, it has the following beneficial effects:

[0032] (1) The coal mine adopts a cantilevered tunneling machine and its safety monitoring system. By setting up a tunneling machine body, a tunneling unit, a feeding unit, an upper conveying unit, a lower conveying unit, a power gear, a driven gear, a rotating shaft, a mounting plate, a toggle rod, a block, a guide plate, and a mounting shaft, the preliminary coal selection starts directly from the coal mining end. The guide plate increases the interval between the coal ore transported from the upper conveying unit and the lower conveying unit, reduces the mutual interference between small pieces of coal and large pieces of coal, makes the screening process more efficient, and achieves size separation more accurately.

[0033] (2) The coal mine adopts a cantilevered roadheader and its safety monitoring system. By arranging a power bevel gear, a driven bevel gear, a movable shaft, an adjusting gear, a rack, a limit rod, a spring 1, an adjusting shaft, a limit plate, a sliding rod, a guide rod, a spring 2, a support rod, a stop rod, a positioning rod, a fixed shaft, and a toggle plate, a screening hole is opened on the surface of the guide plate. When the rotating shaft drives the toggle rod to rotate, the rotating shaft synchronously drives the power bevel gear to rotate, so that the toggle plate moves back and forth on the surface of the guide plate, so that a small amount of crushed ore mixed in the upper conveying unit can be further dropped from the screening hole on the guide plate, thereby further improving the efficiency of size separation and achieving size separation more accurately.

[0034] (3) The coal mine adopts a cantilevered tunnel boring machine and its safety monitoring system. By setting up a monitoring module, an alarm module, a communication module, and a dispatch module, the operating parameters of the upper and lower conveying units are detected through the monitoring module. When the operating parameters are abnormal, the alarm module sends an alarm to the control room, and the control room uses the communication module to dispatch maintenance tasks to the maintenance team. The dispatch module dispatches maintenance personnel to carry out maintenance according to the attendance of the day. The maintenance personnel can be notified to go for maintenance as soon as the upper and lower conveying units fail, thereby improving the tunneling efficiency of coal mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 Another perspective view of the overall structure of the present invention;

[0037] Figure 3 It is a schematic diagram of the position of the material guide component of the present invention;

[0038] Figure 4 It is the overall structural diagram of the material guide assembly of the present invention;

[0039] Figure 5 It is a structural diagram of the rotating shaft of the present invention;

[0040] Figure 6 It is a diagram of the combined state of the rack of the present invention;

[0041] Figure 7 It is a disassembled state diagram of the limit rod of the present invention;

[0042] Figure 8 It is a structural diagram of the limiting plate of the present invention;

[0043] Fig. 9 It is a system diagram of the present invention.

[0044] In the figure: 1. tunnel boring machine body; 11. tunnel boring unit; 12. feeding unit; 13. upper conveying unit; 14. lower conveying unit; 2. power gear; 21. driven gear; 22. rotating shaft; 23. mounting plate; 24. toggle rod; 25. block; 26. guide plate; 27. mounting shaft; 3. power parachute gear; 31. driven parachute gear; 32. movable shaft; 33. adjusting gear; 34. rack; 35. limit rod; 36. spring 1; 37. adjusting shaft; 371. limit plate; 372. sliding rod; 38. guide rod; 39. spring 2; 310. support rod; 311. block rod; 312. positioning rod; 313. fixed shaft; 314. toggle plate. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figures 1 to 9 , the present invention provides the following technical solutions:

[0047] Embodiment 1: A cantilevered tunneling machine for coal mining comprises a tunneling machine body 1, a tunneling machine unit 11 installed at the front end of the tunneling machine body 1, a feeding machine unit 12 installed below the tunneling machine unit 11, and an upper conveying machine unit 13 and a lower conveying machine unit 14 connected to the feeding machine unit 12. A partition assembly for increasing the interval between ore drop points is provided at the end of the upper conveying machine unit 13. The partition assembly comprises:

[0048] The inner ring outer wall of the power gear 2 is fixed on the support shaft of the upper conveyor assembly 13 to provide power to the separation assembly;

[0049] The driven gear 21 meshes with the power gear 2 to transmit power to other parts of the partition assembly;

[0050] Both ends of the mounting shaft 27 are movably mounted at the end of the upper conveyor unit 13 through bearings;

[0051] The inner wall of the guide plate 26 is fixedly mounted on the mounting shaft 27 to change the falling point of the ore;

[0052] One end of the mounting plate 23 is fixedly mounted on the side wall of the upper conveyor assembly 13, and the other end of the mounting plate 23 is fixedly penetrated outside the rotating shaft 22 to provide support for the rotating shaft 22;

[0053] One end of the stopper 25 is fixedly mounted on the side wall of the guide plate 26 and cooperates with the toggle rod 24 to deflect the guide plate 26;

[0054] One end of the rotating shaft 22 is fixedly mounted on the side wall of the driven gear 21 , and the other end of the rotating shaft 22 is fixed with a toggle rod 24 for deflecting the material guide plate 26 .

[0055] When in use, the tunneling machine body 1 drives the tunneling unit 11 to mine coal, and the feeding unit 12 moves the coal mined by the tunneling unit 11 to the upper conveying unit 13 and the lower conveying unit 14. The larger coal ore is directly moved to the upper conveying unit 13 through the feeding unit 12, and the smaller crushed coal ore falls to the lower conveying unit 14 through the opening of the feeding unit 12. The upper conveying unit 13 and the lower conveying unit 14 transport the coal ore to the rear of the tunneling machine body 1. During the transportation process, the upper conveying unit 13 is synchronously driven. The power gear 2 rotates, and the driven gear 21 is driven to rotate through the power gear 2, and the driven gear 21 drives the rotating shaft 22 to rotate, and the mounting plate 23 provides support for the rotating shaft 22, and the rotating shaft 22 drives the toggle rod 24 to rotate, and the toggle rod 24 squeezes the stopper 25 to rotate, and the stopper 25 drives the guide plate 26 to move, so that the guide plate 26 is slightly flipped with the mounting shaft 27 as the axis, so that the coal ore transported from the upper conveyor unit 13 falls farther and is separated from the crushed coal transported from the lower conveyor unit 14.

[0056] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: a preliminary selection component for assisting coal selection is provided at the end of the upper conveyor group 13, and the preliminary selection component includes:

[0057] The inner ring outer wall of the power bevel gear 3 is fixedly mounted on the rotating shaft 22 to provide power to the primary selection assembly;

[0058] The driven bevel gear 31 meshes with the power bevel gear 3 to transmit power;

[0059] One end of the movable shaft 32 is fixedly mounted on the driven bevel gear 31, and the other end of the movable shaft 32 is fixedly mounted with an adjusting gear 33. One end of the movable shaft 32 is movably inserted into the mounting plate 23 through a bearing, and a screening hole is opened on the surface of the guide plate 26.

[0060] The rack 34 meshes with the adjusting gear 33 to transmit power, and the adjusting gear 33 is a half gear;

[0061] One end of the limit rod 35 is slidably inserted into the rack 34, and the other end of the limit rod 35 is fixedly mounted on the mounting plate 23;

[0062] One end of the spring 1 36 is fixedly mounted on the limit rod 35, and the other end of the spring 1 36 is fixedly mounted in the rack 34 to provide elastic force for resetting the rack 34;

[0063] One end of the support rod 310 is fixedly mounted on the rack 34 to transmit power;

[0064] One end of the fixed shaft 313 is fixedly mounted on the bottom of the support rod 310 , and the other end of the fixed shaft 313 is fixedly mounted on a toggle plate 314 , and the bottom of the toggle plate 314 is slidably abutted against the material guide plate 26 .

[0065] When in use, a screening hole is provided on the surface of the guide plate 26. When the rotating shaft 22 drives the toggle rod 24 to rotate, the rotating shaft 22 synchronously drives the power umbrella gear 3 to rotate, and the power umbrella gear 3 drives the driven umbrella gear 31 to rotate, and the driven umbrella gear 31 drives the movable shaft 32 to rotate, and the movable shaft 32 drives the adjusting gear 33 to rotate, and the adjusting gear 33 is meshed with the rack 34, so that the rack 34 can move with the rotation of the adjusting gear 33, and the rack 34 and the limiting rod 35 are slidably matched, so that the limiting rod 35 guides and limits the rack 34, and the mounting plate 23 provides support for the limiting rod 35, so that the rack 34 can only move in a straight line along the limiting rod 35 during the movement, and the rack 34 drives the support rod 310 to move, and the fixed shaft 313 is driven to move by the support rod 310, and the fixed shaft 313 drives the toggle plate 314 to move to the side close to the rack 34;

[0066] When the rack 34 and the adjusting gear 33 are not in meshing state, the spring 1 36 provides elastic force to the rack 34, so that the rack 34 moves to the Figure 6 The initial position shown is reset, so that the toggle plate 314 moves back and forth on the surface of the guide plate 26, so that a small amount of crushed ore mixed in the upper conveyor unit 13 can further fall from the screening holes on the guide plate 26, further improving the efficiency of size separation and achieving size separation more accurately;

[0067] In another embodiment different from the aforementioned embodiment, the preliminary selection component further includes:

[0068] One end of the adjusting shaft 37 is fixedly mounted on one end of the rack 34, and the other end of the adjusting shaft 37 is movably mounted with a limit plate 371 through a bearing;

[0069] One end of the sliding rod 372 is fixedly installed in the limiting plate 371, and the other end of the sliding rod 372 is slidably inserted into the rack 34 to limit the limiting plate 371;

[0070] One end of the guide rod 38 is fixedly mounted on the adjustment shaft 37, and the other end of the guide rod 38 is slidably inserted into the support rod 310 for guiding and limiting.

[0071] One end of the blocking rod 311 is fixedly mounted on the side wall of the support rod 310, and a positioning rod 312 is slidably abutted against the side wall of the blocking rod 311;

[0072] A toggle plate 314 is fixedly mounted on the other end of the positioning rod 312 , a fixed shaft 313 is fixedly mounted on the top of the toggle plate 314 , and one end of the fixed shaft 313 is movably mounted on the bottom of the support rod 310 through a bearing.

[0073] The rack 34 provides support for the adjusting shaft 37, and the adjusting shaft 37 provides support for the guide rod 38. The guide rod 38 and the support rod 310 are slidably matched. At the same time, the adjusting shaft 37 provides support for the limit plate 371, and the limit plate 371 provides support for the sliding rod 372. One end of the sliding rod 372 is slidably penetrated in the rack 34. At the same time, the spring 2 39 provides downward elastic force for the guide rod 38, so that the guide rod 38 can slide linearly along the support rod 310 under the action of the spring 2 39 and reset. At the same time, the fixed shaft 313 is no longer fixedly connected with the toggle plate 314, but is movably connected by a bearing. The support rod 310 provides support for the blocking rod 311, and the toggle plate 314 provides support for the positioning rod 312.

[0074] When the toggle plate 314 moves back and forth on the guide plate 26 driven by the rack 34, it can flip around the fixed axis 313 as the axis, and the blocking rod 311 limits the positioning rod 312 so that the swing angle of the positioning rod 312 is limited. At the same time, the rack 34 and the support rod 310 can move up and down and flip around the adjustment axis 37 as the axis. The angle range of the support rod 310 when flipping around the adjustment axis 37 as the axis is the range within which the sliding rod 372 can slide, so that when the guide plate 26 flips back and forth around the installation axis 27 as the axis, the toggle plate 314 can also flip back and forth with the guide plate 26 around the installation axis 27 as the axis, and can move back and forth on the guide plate 26.

[0075] An embodiment of the present invention also provides a safety monitoring system suitable for a cantilever tunneling machine used in coal mine development, including a monitoring module, wherein a signal output end of the monitoring module is connected to a signal receiving end of an alarm module, the signal output end of the alarm module is connected to a signal receiving end of a communication module, and the signal output end of the communication module is connected to a signal receiving end of a dispatch module; the monitoring module is installed on a conveyor group to detect the operating status of the conveyor group, the monitoring module specifically includes a temperature sensor, a displacement sensor and a vibration sensor, the operating temperature of the drive motors of the upper conveyor group 13 and the lower conveyor group 14 is detected by the temperature sensor, the displacement sensor is used to detect whether the upper conveyor group 13 and the lower conveyor group 14 are offset, and the vibration sensor is used to detect whether the upper conveyor group 13 and the lower conveyor group 14 are in abnormal conditions such as imbalance, looseness or wear during operation.

[0076] The operating parameters of the conveyor unit are detected through the monitoring module. When the operating parameters are abnormal, the alarm is transmitted to the control room through the alarm module. The control room uses the communication module to send maintenance tasks to the maintenance team. The dispatch module sends maintenance personnel to repair according to the attendance of the day. The maintenance personnel can be notified to go for maintenance as soon as the conveyor unit fails.

[0077] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0078] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cantilever type tunneling machine for coal mining, comprising a tunneling machine body (1), a tunneling machine unit (11) installed at the front end of the tunneling machine body (1), a feeding machine unit (12) installed below the tunneling machine unit (11), and an upper conveying machine unit (13) and a lower conveying machine unit (14) connected to the feeding machine unit (12), characterized in that: The end of the upper conveyor unit (13) is provided with a partition assembly for increasing the interval between ore drop points and a primary selection assembly for assisting coal selection, wherein the partition assembly comprises: A power gear (2) is fixed on the support shaft of the upper conveyor assembly (13) to provide power to the separation assembly; A driven gear (21) meshes with the power gear (2) to transmit power to other parts of the partition assembly; A mounting shaft (27) is movably mounted on the end of the upper conveyor assembly (13) via a bearing; The guide plate (26) is fixedly mounted on the mounting shaft (27) to change the falling point of the ore.

2. A cantilevered tunneling machine for coal mining according to claim 1, characterized in that: The partition assembly also includes: A mounting plate (23), one end of which is fixed to the side wall of the upper conveyor assembly (13), and the other end of which provides support for the rotating shaft (22); A stopper (25) is fixed on the side wall of the guide plate (26) and cooperates with the toggle rod (24) to deflect the guide plate (26); One end of the rotating shaft (22) is fixed on the side wall of the driven gear (21), and the other end is fixed with a toggle rod (24) for deflecting the material guide plate (26).

3. A cantilevered tunneling machine for coal mining according to claim 1, characterized in that: The preliminary selection components include: A power bevel gear (3) is fixedly mounted on the rotating shaft (22) to provide power to the primary selection assembly; A driven bevel gear (31) meshes with the power bevel gear (3) to transmit power; The movable shaft (32) has one end fixed on the driven bevel gear (31) and the other end fixed with an adjusting gear (33). One end of the movable shaft (32) is movably inserted into the mounting plate (23). The surface of the guide plate (26) is provided with a screening hole.

4. A cantilevered tunneling machine for coal mining according to claim 3, characterized in that: The preliminary selection components also include: A rack (34) meshed with an adjusting gear (33) to transmit power, wherein the adjusting gear (33) is a half gear; A limiting rod (35), one end of which is slidably inserted into the rack (34) and the other end of which is fixed with a mounting plate (23); A spring (36) has one end fixed on the limiting rod (35) and the other end fixed in the rack (34) to provide elastic force for resetting the rack (34).

5. A cantilevered tunnel boring machine for coal mining according to claim 4, characterized in that: The preliminary selection components also include: A support rod (310) with one end mounted on the rack (34) to transmit power; The fixed shaft (313) has one end fixed to the bottom of the support rod (310) and the other end fixed with a toggle plate (314), the bottom of the toggle plate (314) abutting against the guide plate (26).

6. A cantilevered tunneling machine for coal mining according to claim 4, characterized in that: The preliminary selection components also include: An adjusting shaft (37), one end of which is fixed to one end of the rack (34), and the other end of which is movably mounted with a limit plate (371); A sliding rod (372), one end of which is fixed in the limiting plate (371), and the other end of which is slidably inserted into the rack (34) to limit the limiting plate (371); The guide rod (38) has one end fixed on the adjustment shaft (37) and the other end slidingly penetrates the support rod (310) for guiding and limiting. The blocking rod (311) is fixed on the side wall of the support rod (310); a positioning rod (312) is abutted on the side wall of the blocking rod (311); a toggle plate (314) is fixed to the other end of the positioning rod (312); and the top of the toggle plate (314) is movably mounted on the bottom of the support rod (310) via a fixed shaft (313).

7. A safety monitoring system for a cantilevered roadheader for coal mining according to any one of claims 1 to 6, characterized in that: It includes a monitoring module, wherein the signal output end of the monitoring module is connected to the signal receiving end of the alarm module, the signal output end of the alarm module is connected to the signal receiving end of the communication module, and the signal output end of the communication module is connected to the signal receiving end of the dispatch module.

8. A safety monitoring system for a cantilevered roadheader for coal mining according to claim 7, characterized in that: The monitoring module is installed on the conveyor group to detect the operating status of the conveyor group. The monitoring module specifically includes a temperature sensor, a displacement sensor and a vibration sensor.

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