An adjustable multi-angle drilling device for coal mining

Abstract

The invention relates to the technical field of drilling devices, and proposes an adjustable multi-angle drilling device for coal mine exploitation. While ensuring multi-angle drilling and adjustability of drilling angles, a power component is mainly placed outside the drilling hole, and the adjustable power source is realized in the form of hydraulics. The requirements for the aperture size of the drilling hole are relatively low, and drilling operations of drilling holes of various depths can be realized. The drilling function is more powerful and the practicality is better. The device includes multiple supporting legs, a mobile platform and a drilling piece. The mobile platform includes a circular frame, and the multiple supporting legs are all installed relative to the circular frame. A synchronous structure is installed on the circular frame, and the synchronous structure is used for rotational driving of the multiple supporting legs. A power component is installed on the circular frame. The drilling piece includes a drilling end pipe, and the power component is used for guiding and driving the drilling end pipe. The bottom end of the drilling end pipe is fixedly connected to a drill bit rack, and a plurality of mounting grooves are opened in the drill bit rack, and the multiple mounting grooves are all connected to the mobile rack.

Description

Technical Field

[0001] The invention relates to the technical field of drilling devices, and in particular to an adjustable multi-angle drilling device for coal mining. Background Art

[0002] As the name suggests, the adjustable multi-angle coal mining drilling device is an adjustable multi-angle coal mining auxiliary drilling device.

[0003] After searching, the Chinese patent announcement number CN112664139A discloses an adjustable multi-angle drilling device for coal mining, which is roughly described as including a first support plate, a support leg, a shell and a second support plate, a first fixing plate is connected to the inner wall of the third connecting plate, a first angle adjustment device is connected to the outer wall of the first connecting plate, an output end of the angle adjustment device passes through a square groove and is connected to a telescopic device, a second angle adjustment device is connected to the outer wall of the connecting frame, and the second angle adjustment device is matched with the first angle adjustment device at one end away from the connecting frame, a switch assembly is connected to the outer wall of the shell, and a fixing assembly and a cleaning assembly are connected to the top wall of the first support plate. When in use, the size of the drill bit is first adjusted according to actual work needs, and then the third drive shaft is adjusted to make it slide along the inner wall of the second drive shaft, and then The second connecting rod is driven to rotate by the sliding sleeve, and then the first connecting rod is driven to rotate, so that the distance between the first fixed seat and the second fixed seat can be changed, and then by providing the first connecting rod, the second connecting rod and the third driving shaft, the size of the outward expansion between the first connecting rod and the second connecting rod can be adjusted, and then the size of the drill hole can be adjusted. The Chinese patent announcement number CN118979697A discloses an adjustable multi-angle coal mining drilling device, which is roughly described as including a mining positioning component, a drill bit transmission component is installed on one side of the mining positioning component, a positioning expansion component is installed on the bottom of the drill bit transmission component, and an expandable drill bit component is installed on the bottom of the positioning expansion component for corresponding side wall protection according to the drill bit expansion size, which also has the function of adjusting the size of the drill hole when in use.

[0004] Although the above two sets of existing technical solutions both have the function of adjusting the size of the drill hole, both of them are in the form of placing the electric structure close to the drill bit to realize the driving of the drill bit and the auxiliary structure. In order to meet the installation space of the electric structure, this form has relatively large requirements on the size of the equipment near the drill bit, and considering the actual drilling depth and the actual aperture of the drill hole, once the drilling depth is large, the high temperature in the drill hole will have a greater impact on the electric structure entering the drill hole. Moreover, since the purpose of drilling is to explore the geological structure of the coal mining area, in most cases the aperture of the drill hole will not be too large, and the actual aperture of the drill hole is too small, which will also affect the smooth entry of the electric structure. The practicality and feasibility need to be further improved. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an adjustable multi-angle drilling device for coal mine exploitation, which ensures multi-angle drilling and adjustability of the drilling angle while the power component is mainly placed outside the drilling hole. The adjustable power source is realized in hydraulic form, and the requirements for the aperture size of the drilling hole are relatively low. It can realize drilling operations of drilling holes of various depths, and the drilling function is more powerful and the practicality is better.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable multi-angle drilling device for coal mine mining, comprising a plurality of supporting legs, a mobile platform and a drilling piece, the mobile platform comprising a circular frame, the plurality of supporting legs are installed relative to the circular frame, a synchronous structure is installed on the circular frame, the synchronous structure is used for the rotational drive of the plurality of supporting legs, a power assembly is installed on the circular frame, the drilling piece comprises a drilling end pipe, the power assembly is used for guiding and driving the drilling end pipe, a drill bit rack is fixedly connected to the bottom end of the drilling end pipe, a plurality of mounting grooves are provided in the drill bit rack, a plurality of the mounting grooves are connected to a mobile rack, a plurality of the mobile racks are connected to a first hydraulic rod and a second hydraulic rod, a plurality of the second hydraulic rods are respectively connected to a plurality of mounting grooves, a plurality of the first hydraulic rods are also respectively connected to a plurality of mounting grooves, a bottom cutter head is installed on the bottom surface of the drill bit rack and the bottom surfaces of the plurality of mobile racks, and a side cutter head is installed on the side surface of the drill bit rack and the side surface of the plurality of mobile racks.

[0007] Preferably, two upper horizontal bar grooves and two lower horizontal bar grooves are provided in the plurality of the installation grooves, and horizontal transmission frames are slidably connected in the plurality of the upper horizontal bar grooves and the plurality of the lower horizontal bar grooves, and two upper vertical bar grooves and the plurality of the upper vertical bar grooves are slidably connected with vertical transmission frames, and the plurality of the horizontal transmission frames are rotatably connected with rotating couplings, and the plurality of the rotating couplings are respectively rotatably connected to the plurality of the vertical transmission frames.

[0008] Preferably, an extension tube is detachably threadedly installed at the top of the drilling end tube, and an internal flow guide tube is provided in the extension tube and the drilling end tube. The two internal flow guide tubes are detachably threadedly connected, and a fixed support plate matching the internal flow guide tube is fixedly connected in the extension tube and the drilling end tube. A plurality of the second hydraulic rods are connected to the internal flow guide tube in the drilling end tube, and a plurality of the first hydraulic rods are connected to the drilling end tube.

[0009] Preferably, the power assembly includes a bracket mounting cylinder, the bracket mounting cylinder is fixedly connected to the top end of the circular frame, a rotating cylinder is rotatably connected to the bracket mounting cylinder, and a torque motor is installed on the bracket mounting cylinder, the torque motor is used for rotational driving of the rotating cylinder relative to the bracket mounting cylinder, a first symmetry plane and a second symmetry plane are arranged in the rotating cylinder, a first guide plane and a second guide plane are arranged on the drilling end pipe and the extension pipe, the first guide plane matches the first symmetry plane, and the second guide plane matches the second symmetry plane, a rotating feed mechanism is installed on the rotating cylinder, and the rotating feed mechanism is used for downward feeding of the drill bit rack.

[0010] Preferably, the rotating feeding mechanism includes an external articulated seat, which is fixedly connected to the rotating cylinder, an intermediate frame is rotatably connected to the external articulated seat, an electric telescopic rod is installed in the intermediate frame, an auxiliary push frame is rotatably connected to the telescopic rod of the electric telescopic rod, an internal limit spring is connected between the auxiliary push frame and the telescopic rod of the electric telescopic rod, an external limit spring is connected between the external articulated seat and the intermediate frame, and a side strip opening is opened on the rotating cylinder, and the side strip opening provides sufficient space for the movement of the auxiliary push frame.

[0011] Preferably, the plurality of supporting legs all include mounting end frames, the plurality of mounting end frames are all rotatably connected to connecting arms and transmission arms, the plurality of connecting arms are all rotatably connected to leg frames, the plurality of leg frames are respectively rotatably connected to the plurality of transmission arms, the plurality of connecting arms are each installed with an electric drive rod, the drive rods of the plurality of electric drive rods are respectively connected to the plurality of leg frames, half of the plurality of mounting end frames are fixedly connected to a short connecting shaft, the other half of the plurality of mounting end frames are fixedly connected to a long connecting shaft, the plurality of short connecting shafts and the plurality of long connecting shafts are rotatably connected to the circular frame, and the plurality of short connecting shafts and the plurality of long connecting shafts are alternately arranged at intervals.

[0012] Preferably, the synchronous structure includes a first synchronous ring, a second synchronous ring, a first synchronous motor, a second synchronous motor, a first driving gear and a second driving gear, the first synchronous motor and the second synchronous motor are both installed at the bottom end of the circular frame, the first driving gear and the second driving gear are both located on the upper side of the circular frame, and the driving shaft of the first synchronous motor passes through the circular frame to form the installation of the first driving gear, and the driving shaft of the second synchronous motor passes through the circular frame to form the installation of the second driving gear, the first synchronous ring is rotatably connected to the top of the circular frame, the second synchronous ring is rotatably connected to the top of the first synchronous ring, the first driving gear is meshed with the inner annular surface of the first synchronous ring, the first synchronous ring is externally meshed and transmission-connected with a plurality of first transmission gears, the plurality of first transmission gears are respectively fixedly connected to a plurality of short connecting shafts, the second drive gear is meshed with the inner annular surface of the second synchronous ring, the second synchronous ring is externally meshed and transmission-connected with a plurality of second transmission gears, the plurality of second transmission gears are respectively fixedly connected to a plurality of long connecting shafts.

[0013] Preferably, the bottom ends of the multiple leg frames except one leg frame are fixedly connected to a step insertion column, the multiple step insertion columns are each mounted with a leg shell, the multiple leg shells are each fixedly connected with a reset disc spring, the multiple reset disc springs are respectively connected to the multiple step insertion columns, the multiple leg shells are each provided with a support plane, and the multiple support planes are respectively in contact with the bottom ends of the multiple step insertion columns.

[0014] Preferably, the bracket mounting cylinder is fixedly connected to an outer support mounting frame and a plurality of auxiliary ring frames, the torque motor is mounted on the outer support mounting frame, and a spur gear ring and a spur gear are respectively mounted on the rotating cylinder and the output shaft of the torque motor, and the spur gear ring is meshed with the spur gear.

[0015] Preferably, a protective support plate frame is fixedly connected to the circular frame.

[0016] Compared with the prior art, the present invention provides an adjustable multi-angle drilling device for coal mine exploitation, which has the following beneficial effects: in the present invention, through the design of the drilling piece, the core drilling structure of the adjustable multi-angle drilling device for coal mine exploitation is formed, which ensures multi-angle drilling and the adjustability of the drilling angle, and the drilling function is more powerful; through the relative installation of the mobile platform and the power assembly, the drilling piece is provided with installation space and power source, the power assembly is mainly placed outside the drilling hole, and the adjustable power source is realized in the form of hydraulics, which has lower requirements on the aperture size of the drilling hole; through the configuration of the synchronous structure, the multiple support legs are formed into two batches and driven in batches, so as to facilitate the rotation drive of the multiple support legs relative to the circular frame, and then facilitate the posture adjustment and movement of the circular frame, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the three-dimensional structure of the circular frame, the drilling end pipe and the drill bit rack of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of the connecting arm, the transmission arm and the leg frame of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the auxiliary thrust frame, the inner limit spring and the outer limit spring of the present invention; Figure 5 It is a partially cutaway three-dimensional structural schematic diagram of the extension pipe, the inner flow guide pipe and the fixed support plate of the present invention; Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the cooperation of the circular frame, the drilling end pipe and the drill bit rack of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at B in the middle; Figure 8 It is a bottom-view three-dimensional structural schematic diagram of the cooperation of the movable frame, the bottom cutter head and the side cutter head of the present invention; Fig. 9 It is a partially cutaway three-dimensional structural schematic diagram of the cooperation of the drill frame, the moving frame and the first hydraulic rod of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the auxiliary thrust frame and the inner limit spring of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the rotating cylinder, the external hinge seat and the spur gear ring of the present invention; Fig.12 It is a schematic diagram of a partially cutaway three-dimensional structure of the drill bit holder of the present invention when viewed from above; Fig.13 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0018] In the figure: 1, round frame; 2, drilling end pipe; 3, drill bit rack; 4, mounting groove; 5, moving rack; 6, first hydraulic rod; 7, second hydraulic rod; 8, bottom cutter head; 9, side cutter head; 10, upper horizontal groove; 11, lower horizontal groove; 12, horizontal transmission rack; 13, upper vertical groove; 14, lower vertical groove; 15, vertical transmission rack; 16, rotating shaft; 17, extension pipe; 18, internal flow guide pipe; 19, fixed support plate; 20, bracket installation cylinder; 21, rotating cylinder; 22, torque motor; 23, first symmetry plane; 24, second symmetry plane; 25, first guide plane; 26, second guide plane; 27, external hinge seat; 28, intermediate rack; 29, electric 1. The movable telescopic rod; 30. The auxiliary push frame; 31. The inner limit spring; 32. The outer limit spring; 33. The mounting end frame; 34. The connecting arm; 35. The transmission arm; 36. The leg frame; 37. The electric drive rod; 38. The short connecting shaft; 39. The long connecting shaft; 40. The first synchronous ring; 41. The second synchronous ring; 42. The first synchronous motor; 43. The second synchronous motor; 44. The first driving gear; 45. The second driving gear; 46. The first transmission gear; 47. The second transmission gear; 48. The stepped insertion column; 49. The leg shell; 50. The reset disc spring; 51. The outer support mounting frame; 52. The auxiliary ring frame; 53. The spur ring; 54. The spur gear; 55. The protective support plate frame. DETAILED DESCRIPTION

[0019] 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.

[0020] For examples, see Figure 1 -Attached Fig.13, an adjustable multi-angle drilling device for coal mining, including multiple support legs, a mobile platform and a drilling piece, the mobile platform includes a circular frame 1, multiple support legs are installed relative to the circular frame 1, convenient for forming a support and placing the circular frame 1, a synchronous structure is installed on the circular frame 1, the synchronous structure is used for the rotation drive of multiple support legs, a power assembly is installed on the circular frame 1, the drilling piece includes a drilling end pipe 2, the power assembly is used for guiding and driving the drilling end pipe 2, the power assembly includes a support mounting cylinder 20, the support mounting cylinder 20 is fixedly connected to the top of the circular frame 1, a rotating cylinder 21 is rotatably connected to the support mounting cylinder 20, and a torque motor 22 is installed on the support mounting cylinder 20, an external support mounting frame 51 and multiple auxiliary ring frames 52 are fixedly connected outside the support mounting cylinder 20, the setting of the auxiliary ring frame 52 is convenient for external materials to be tied when forming a connection with the support mounting cylinder 20, the torque motor 22 is installed on the external support mounting frame 51, and the rotating cylinder 21 and A spur ring 53 and a spur gear 54 are respectively mounted on the output shaft of the torque motor 22, and the spur ring 53 meshes with the spur gear 54. The torque motor 22 is used for rotating the rotating cylinder 21 relative to the bracket mounting cylinder 20. A first symmetry plane 23 and a second symmetry plane 24 are arranged in the rotating cylinder 21. A first guide plane 25 and a second guide plane 26 are arranged on the drilling end pipe 2 and the extension pipe 17. The first guide plane 25 matches the first symmetry plane 23, and the second guide plane 26 matches the second symmetry plane 24. When the rotating cylinder 21 rotates, it can drive the drilling end pipe 2 and the extension pipe 17 to form a synchronous rotation drive. A rotating feed mechanism is installed on the rotating cylinder 21. The rotating feed mechanism is used for the downward feeding of the drill bit frame 3. Through the relative installation of the mobile platform and the power assembly, an installation space and a power source are provided for the drilling parts. The power assembly is mainly placed outside the drilling hole. The adjustable power source is realized in the form of hydraulic pressure, and the aperture size of the drilling hole is relatively low.

[0021] It should be further explained that the bottom end of the drilling end pipe 2 is fixedly connected to a drill frame 3, a plurality of mounting grooves 4 are provided in the drill frame 3, a plurality of mounting grooves 4 are connected to a moving frame 5, a plurality of mounting grooves 4 are provided with two upper horizontal grooves 10 and two lower horizontal grooves 11, a plurality of upper horizontal grooves 10 and a plurality of lower horizontal grooves 11 are slidably connected to a horizontal transmission frame 12, a plurality of moving frames 5 are provided with two upper vertical grooves 13 and two lower vertical grooves 14, a plurality of lower vertical grooves 14 and a plurality of upper vertical grooves 13 are slidably connected to a vertical transmission frame 15, and a plurality of horizontal transmission frames 12 are rotatably connected to a rotating connection. The plurality of rotating shafts 16 are rotatably connected to the plurality of vertical transmission frames 15, the plurality of mobile frames 5 are connected to the first hydraulic rod 6 and the second hydraulic rod 7, the plurality of second hydraulic rods 7 are respectively connected to the plurality of mounting grooves 4, the plurality of first hydraulic rods 6 are also respectively connected to the plurality of mounting grooves 4, the bottom surface of the drill frame 3 and the bottom surface of the plurality of mobile frames 5 are both installed with bottom cutter heads 8, the side surface of the drill frame 3 and the side surface of the plurality of mobile frames 5 are both installed with side cutter heads 9, and the core drilling structure of the adjustable multi-angle coal mining drilling device is formed through the design of the drilling piece, which ensures the multi-angle drilling and the adjustable drilling angle. The drilling function is more powerful. The top of the drilling end pipe 2 is detachably threaded with an extension pipe 17. An inner flow guide pipe 18 is arranged inside the extension pipe 17 and the drilling end pipe 2. The two inner flow guide pipes 18 are detachably threadedly connected. A fixed support plate 19 matching the inner flow guide pipe 18 is fixedly connected inside the extension pipe 17 and the drilling end pipe 2. A plurality of second hydraulic rods 7 are connected to the inner flow guide pipe 18 in the drilling end pipe 2. A plurality of first hydraulic rods 6 are connected to the drilling end pipe 2. The rotating feed mechanism includes an external hinge seat 27. The external hinge seat 27 is fixedly connected to the rotating cylinder 21. An intermediate frame 28 is rotatably connected inside the articulated seat 27, an electric telescopic rod 29 is installed inside the intermediate frame 28, an auxiliary push frame 30 is rotatably connected to the telescopic rod of the electric telescopic rod 29, an internal limit spring 31 is connected between the auxiliary push frame 30 and the telescopic rod of the electric telescopic rod 29, a relative frame is fixedly connected to the telescopic rod of the electric telescopic rod 29, the auxiliary push frame 30 is rotatably connected to the relative frame, the internal limit spring 31 is fixedly connected to the relative frame, an external limit spring 32 is connected between the external articulated seat 27 and the intermediate frame 28, and a side strip opening is opened on the rotating cylinder 21, which provides sufficient space for the movement of the auxiliary push frame 30.

[0022] It should be further explained that the multiple supporting legs all include mounting end frames 33, the multiple mounting end frames 33 are all rotatably connected to connecting arms 34 and transmission arms 35, the multiple connecting arms 34 are all rotatably connected to leg frames 36, the multiple leg frames 36 are respectively rotatably connected to the multiple transmission arms 35, the multiple connecting arms 34 are all installed with electric drive rods 37, the drive rods of the multiple electric drive rods 37 are respectively connected to the multiple leg frames 36, half of the multiple mounting end frames 33 are fixedly connected to short connecting shafts 38, the other half of the multiple mounting end frames 33 are fixedly connected to long connecting shafts 39, the multiple short connecting shafts 38 and the multiple long connecting shafts 39 are all rotatably connected to the circular frame 1, and the multiple short connecting shafts 38 and the multiple long connecting shafts 39 are alternately arranged at intervals, and the synchronization structure includes a first synchronization ring 40, a second synchronization ring 41, a first synchronous motor 42, a second synchronous motor 43, a first driving gear 44 and a second driving gear 45. The first synchronous motor 42 and the second synchronous motor 43 are both installed at the bottom end of the circular frame 1, and the first driving gear 44 and the second driving gear 45 are both located on the upper side of the circular frame 1, and the driving shaft of the first synchronous motor 42 passes through the circular frame 1 to form the installation of the first driving gear 44, and the driving shaft of the second synchronous motor 43 passes through the circular frame 1 to form the installation of the second driving gear 45. The first synchronization ring 40 is rotatably connected to the top end of the circular frame 1, and the second synchronization ring 41 is rotatably connected to the top end of the first synchronization ring 40. The first driving gear 44 and The inner ring surface of the first synchronizer ring 40 is meshed, and the first synchronizer ring 40 is externally meshed and connected to a plurality of first transmission gears 46. The plurality of first transmission gears 46 are respectively fixedly connected to a plurality of short connecting shafts 38. The second drive gear 45 is meshed with the inner ring surface of the second synchronizer ring 41. The second synchronizer ring 41 is externally meshed and connected to a plurality of second transmission gears 47. The plurality of second transmission gears 47 are respectively fixedly connected to a plurality of long connecting shafts 39. Through the configuration of the synchronization structure, the plurality of support legs are driven in two batches to facilitate the rotation drive of the plurality of support legs relative to the circular frame 1, and then facilitate the posture adjustment and travel movement of the circular frame 1, which has better practicality. The bottom ends of the plurality of leg frames 36 except one leg frame 36 are all fixedly connected A step insertion column 48 is connected, and a plurality of step insertion columns 48 are each provided with a leg shell 49, and a plurality of leg shells 49 are each fixedly connected with a reset coil spring 50, and a plurality of reset coil springs 50 are respectively connected with a plurality of step insertion columns 48, and a plurality of leg shells 49 are each provided with a support plane, and a plurality of support planes are respectively in contact with the bottom ends of a plurality of step insertion columns 48, so that when the corresponding leg frame 36 forms relative support with the ground surface, the relative sliding of the leg frame 36 and the ground surface is replaced by the relative movement between the leg shell 49 and the step insertion column 48, thereby improving the overall movement and support effect of the adjustable multi-angle coal mining drilling device, and reducing the friction loss of the leg frame 36, and a protective support plate frame 55 is fixedly connected to the circular frame 1, so as to improve the protective effect of the synchronous structure,The leg frame 36 that is not fixedly connected to the step insertion column 48 can improve the relative position stability between the leg frame 36 and the ground when it is in direct contact with the ground, so as to ensure the relative position stability of the circular frame 1 relative to the ground in a static support state.

[0023] The torque motor 22, the electric telescopic rod 29, the electric drive rod 37, the first synchronous motor 42 and the second synchronous motor 43 in this embodiment are all conventional devices purchased on the market and known to those skilled in the art. In the present invention, we only use them without improving their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged according to the requirements of their instruction manual, and will not be described in detail here.

[0024] To sum up, the working principle of the adjustable multi-angle coal mine drilling device is that when in use, the adjustable multi-angle coal mine drilling device is first transported to the location where it is required to be used, and then the torque motor 22, the electric telescopic rod 29, the electric drive rod 37, the first synchronous motor 42 and the second synchronous motor 43 are equipped with corresponding control circuits, and the drilling end pipe 2 and the inner flow guide pipe 18 are equipped with respective corresponding external hydraulic supply devices to realize the respective supply of hydraulic medium to the drilling end pipe 2 and the inner flow guide pipe 18. Since the first hydraulic rod 6 is connected to the drilling end pipe 2, the hydraulic pressure in the drilling end pipe 2 will increase. The overall length of the first hydraulic rod 6 is increased. Similarly, when the hydraulic pressure in the drilling end pipe 2 is reduced, the overall length of the first hydraulic rod 6 is shortened. Since the second hydraulic rod 7 is connected to the inner flow guide pipe 18, the increase of the hydraulic pressure in the inner flow guide pipe 18 will increase the overall length of the second hydraulic rod 7. Similarly, when the hydraulic pressure in the inner flow guide pipe 18 is reduced, the overall length of the second hydraulic rod 7 is shortened. By controlling the liquid pressure in the drilling end pipe 2 and the liquid pressure in the inner flow guide pipe 18, the length control of the first hydraulic rod 6 and the length control of the second hydraulic rod 7 can be achieved. By controlling the length of the first hydraulic rod 6 and the second hydraulic rod 7 The length of the rod 7 can achieve the adjustment and control of the position and posture of the corresponding mobile frame 5 in the installation groove 4, that is, when the length of the first hydraulic rod 6 and the length of the second hydraulic rod 7 are the same and both increase by a certain length, the mobile frame 5 slides out relative to the installation groove 4 in an upright state; when the length of the first hydraulic rod 6 of the first hydraulic rod 6 and the second hydraulic rod 7 connected to the same mobile frame 5 is greater than the length of the second hydraulic rod 7, the top end of the mobile frame 5 extends more than the bottom end of the mobile frame 5; when the length of the first hydraulic rod 6 of the first hydraulic rod 6 and the second hydraulic rod 7 connected to the same mobile frame 5 is less than the length of the second hydraulic rod 7, the mobile frame 5 The top end of the mobile frame 5 extends less than the bottom end. During operation, through the meshing transmission between the spur ring 53 and the spur gear 54, the medium torque motor 22 is powered on to realize the rotation drive of the rotating cylinder 21. Since the drilling end pipe 2 is provided with a first guide plane 25 and a second guide plane 26, and the rotating cylinder 21 is provided with a first guide plane 25 and a second guide plane 26, the rotation of the rotating cylinder 21 will realize the rotation drive of the drilling end pipe 2, and then realize the synchronous rotation drive of the drill bit frame 3 and multiple mobile frames 5, and finally realize the synchronous rotation drive of multiple bottom cutter heads 8 and multiple side cutter heads 9, so as to realize the drilling operation of the drilling hole.

[0025] Furthermore, the electric telescopic rod 29 is powered on to realize the movement drive of the auxiliary push frame 30. During the movement of the auxiliary push frame 30, it will first contact with the drilling end pipe 2, and under the relative friction between the drilling end pipe 2 and the auxiliary push frame 30, a downward push drive of the drilling end pipe 2 is formed, and finally the synchronous feed drive of multiple bottom cutter heads 8 and multiple side cutter heads 9 is realized. After the electric telescopic rod 29 pushes the auxiliary push frame 30 to move to the extreme position, the electric telescopic rod 29 controls the auxiliary push frame 30 to move away from the reset movement relative to the drilling end pipe 2, and then the feeding push effect on the drilling end pipe 2 is invalid. When the relative movement between the auxiliary push frame 30 and the drilling end pipe 2 is separated, under the action of the internal limit spring 31, it can ensure that the auxiliary push frame 30 and the electric telescopic rod are in a stable state. The relative posture resetting between the telescopic rods of the retracting rod 29 can ensure the relative posture resetting between the intermediate frame 28 and the external hinged seat 27 under the action of the external limit spring 32, so as to facilitate the electric telescopic rod 29 to push the auxiliary push frame 30 to move closer to the drilling end pipe 2 for multiple times, and to have a fixed posture, which is convenient for repeated pushing down operations relative to the drilling end pipe 2. When a single pushing down operation is completed and before the auxiliary push frame 30 is separated from the drilling end pipe 2, a small lifting of the drilling end pipe 2 can be achieved, which also facilitates the intermittent feeding operation of the bottom cutter head 8. In the non-feeding state, the relative force between the bottom cutter head 8 and the drilling hole is small, and the heat generated in this state is small, which can improve the heat dissipation effect of the bottom cutter head 8. , better ensure the drilling and service life of the lower bottom cutter head 8, and after the auxiliary push frame 30 is separated from the drilling end pipe 2, the drilling end pipe 2 will fall again relative to the drilling hole under the action of its own gravity, and finally the bottom cutter head 8 will contact the inner bottom surface of the drilling hole again to prepare for the subsequent feeding and pushing. Through the operation of multiple electric drive rods 37 respectively, the rotation adjustment control of multiple leg frames 36 relative to multiple connecting arms 34 can be realized. Under the relative transmission action of the transmission arm 35 and the leg frame 36, the leg frame 36 and the connecting arm 34 connected to each other can form a follow-up rotation change of the connecting arm 34 relative to the mounting end frame 33 in the process of forming a mutual rotation change. In this way, when the corresponding electric drive rods 37 work separately, the rotation adjustment control of multiple leg frames 36 relative to multiple connecting arms 34 can be realized. When the rod 37 is powered on, the overall coordinated movement drive of the connecting arm 34, the transmission arm 35 and the leg frame 36 can be realized, and finally the lifting and lowering of the leg frame 36 relative to the ground can be realized. Under the transmission action of the first driving gear 44, the first synchronous ring 40 and multiple first transmission gears 46, the first synchronous motor 42 can realize the rotation drive of multiple short connecting shafts 38, that is, the rotation adjustment of multiple supporting legs connected to the short connecting shafts 38 can be realized. Similarly, under the transmission action of the second driving gear 45, the second synchronous ring 41 and multiple second transmission gears 47, the second synchronous motor 43 can realize the rotation drive of multiple long connecting shafts 39, that is, the rotation adjustment of multiple supporting legs connected to the long connecting shafts 39 can be realized.

[0026] Furthermore, the circular frame 1 is driven to move by controlling the supporting legs connected to the short connecting shaft 38 and the supporting legs connected to the long connecting shaft 39 to move alternately in sequence. That is, when the leg support frame 36 in the supporting legs connected to the short connecting shaft 38 is off the ground, the supporting legs connected to the short connecting shaft 38 are controlled to rotate relative to the circular frame 1 to achieve the forward swing of the supporting legs connected to the short connecting shaft 38. After the swing is completed, the electric drive rod 37 controls the leg support frame 36 to fall, so that the supporting legs connected to the short connecting shaft 38 support the circular frame 1, and then the supporting legs connected to the long connecting shaft 39 repeat the aforementioned support operation of the supporting legs connected to the short connecting shaft 38. The action of the leg support is to first control the support leg connected to the long connecting shaft 39 to be lifted and separated relative to the ground, and then control the support leg connected to the long connecting shaft 39 to rotate relative to the circular frame 1. After the support leg connected to the long connecting shaft 39 is lifted and separated relative to the ground, the support leg connected to the short connecting shaft 38 is controlled to rotate again relative to the circular frame 1, so as to realize the support leg connected to the short connecting shaft 38 to swing backward relative to the circular frame 1, and at the same time realize the support leg connected to the long connecting shaft 39 to swing forward. After the swing is completed, the electric drive rod 37 controls the leg support frame 36 to fall, so that the support leg connected to the long connecting shaft 39 is aligned with the circular frame 1. The circular frame 1 is supported by the support legs connected to the short connecting shaft 38 and the support legs connected to the long connecting shaft 39 through reciprocating movement, and the auxiliary movement of the circular frame 1 is realized. During the movement, when the leg frame 36 falls and contacts the ground, the leg frame 36 equipped with the step insertion column 48 will form contact with the ground through the leg shell 49, and because the support legs rotate relative to the circular frame 1, the relative distances between the bottom ends of the corresponding multiple leg frames 36 will change, and because the leg shell 49 contacts the ground and the step insertion column 48 matches the leg shell 49, when the position of the leg frame 36 changes with the ground, the position change is manifested as follows: The relative position between the stepped insertion column 48 and the leg shell 49 changes to reduce the wear caused by the direct relative position movement between the leg frame 36 and the ground surface, and the drilling end pipe 2 and the extension pipe 17 are detachable. On the one hand, it is convenient for the relative installation connection between the two, and on the other hand, it can also make the two internal flow guide pipes 18 interconnected end to end. The extension pipe 17 and the internal flow guide pipe 18 inside the extension pipe 17 form a whole that can be connected in sequence end to end, which can form a suitable length according to the drilling requirements of the drilling hole, and it is also convenient to provide pipeline guidance for the hydraulic drive of the first hydraulic rod 6 and the second hydraulic rod 7.

[0027] 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. An adjustable multi-angle drilling device for coal mining, comprising a plurality of support legs, characterized in that: The mobile platform also includes a mobile platform and a drilling member, wherein the mobile platform includes a circular frame (1), a plurality of support legs are installed relative to the circular frame (1), a synchronization structure is installed on the circular frame (1), and the synchronization structure is used for rotationally driving the plurality of support legs. A power assembly is installed on the circular frame (1), and the drilling member includes a drilling end pipe (2), and the power assembly is used for guiding and driving the drilling end pipe (2). The bottom end of the drilling end pipe (2) is fixedly connected to a drill head frame (3), and a plurality of installation slots are provided in the drill head frame (3). (4), a plurality of the mounting grooves (4) are connected to a movable frame (5), a plurality of the movable frames (5) are connected to a first hydraulic rod (6) and a second hydraulic rod (7), a plurality of the second hydraulic rods (7) are respectively connected to a plurality of the mounting grooves (4), a plurality of the first hydraulic rods (6) are also respectively connected to a plurality of the mounting grooves (4), a bottom cutter head (8) is installed on the bottom surface of the drill head frame (3) and the bottom surfaces of the plurality of movable frames (5), and a side cutter head (9) is installed on the side surface of the drill head frame (3) and the side surfaces of the plurality of movable frames (5).

2. The adjustable multi-angle drilling device for coal mining according to claim 1 is characterized in that: Two upper horizontal bar grooves (10) and two lower horizontal bar grooves (11) are provided in each of the plurality of installation grooves (4); a horizontal transmission frame (12) is slidably connected in each of the plurality of upper horizontal bar grooves (10) and the plurality of lower horizontal bar grooves (11); two upper vertical bar grooves (13) and two lower vertical bar grooves (14) are provided on each of the plurality of movable frames (5); a vertical transmission frame (15) is slidably connected in each of the plurality of lower vertical bar grooves (14) and the plurality of upper vertical bar grooves (13); each of the plurality of horizontal transmission frames (12) is rotatably connected to a rotating shaft (16); and the plurality of rotating shafts (16) are rotatably connected to the plurality of vertical transmission frames (15), respectively.

3. The adjustable multi-angle drilling device for coal mining according to claim 2 is characterized in that: An extension tube (17) is detachably threadedly mounted on the top of the drilling end tube (2); an inner flow guide tube (18) is disposed inside the extension tube (17) and inside the drilling end tube (2); the two inner flow guide tubes (18) are detachably threadedly connected; a fixed support plate (19) matching the inner flow guide tube (18) is fixedly connected inside the extension tube (17) and inside the drilling end tube (2); a plurality of the second hydraulic rods (7) are connected to the inner flow guide tube (18) located inside the drilling end tube (2); and a plurality of the first hydraulic rods (6) are connected to the drilling end tube (2).

4. The adjustable multi-angle drilling device for coal mining according to claim 3 is characterized in that: The power assembly comprises a support mounting cylinder (20), the support mounting cylinder (20) being fixedly connected to the top end of the circular frame (1), a rotating cylinder (21) being rotatably connected to the support mounting cylinder (20), and a torque motor (22) being mounted on the support mounting cylinder (20), the torque motor (22) being used for driving the rotating cylinder (21) to rotate relative to the support mounting cylinder (20), a first symmetry plane (23) and a second symmetry plane (24) being arranged in the rotating cylinder (21), a first guide plane (25) and a second guide plane (26) being arranged on the drilling end pipe (2) and the extension pipe (17), the first guide plane (25) matching the first symmetry plane (23), the second guide plane (26) matching the second symmetry plane (24), and a rotation feeding mechanism being mounted on the rotating cylinder (21), the rotation feeding mechanism being used for feeding the drill bit frame (3) downward.

5. The adjustable multi-angle drilling device for coal mining according to claim 4, characterized in that: The rotary feeding mechanism comprises an external hinge seat (27), the external hinge seat (27) is fixedly connected to the rotating cylinder (21), an intermediate frame (28) is rotatably connected inside the external hinge seat (27), an electric telescopic rod (29) is installed inside the intermediate frame (28), an auxiliary push frame (30) is rotatably connected to the telescopic rod of the electric telescopic rod (29), an internal limit spring (31) is connected between the auxiliary push frame (30) and the telescopic rod of the electric telescopic rod (29), an external limit spring (32) is connected between the external hinge seat (27) and the intermediate frame (28), and a side strip opening is opened on the rotating cylinder (21), and the side strip opening provides sufficient space for the movement of the auxiliary push frame (30).

6. The adjustable multi-angle drilling device for coal mining according to claim 5, characterized in that: The plurality of support legs each comprise a mounting end frame (33), the plurality of mounting end frames (33) each being rotatably connected to a connecting arm (34) and a transmission arm (35), the plurality of connecting arms (34) each being rotatably connected to a leg frame (36), the plurality of leg frames (36) being rotatably connected to the plurality of transmission arms (35), the plurality of connecting arms (34) each being mounted with an electric drive rod (37), the drive rods of the plurality of electric drive rods (37) being respectively connected to the plurality of leg frames (36), half of the plurality of mounting end frames (33) each being fixedly connected to a short connecting shaft (38), the other half of the plurality of mounting end frames (33) each being fixedly connected to a long connecting shaft (39), the plurality of short connecting shafts (38) and the plurality of long connecting shafts (39) each being rotatably connected to the circular frame (1), and the plurality of short connecting shafts (38) and the plurality of long connecting shafts (39) being alternately arranged at intervals.

7. The adjustable multi-angle drilling device for coal mining according to claim 6, characterized in that: The synchronous structure comprises a first synchronous ring (40), a second synchronous ring (41), a first synchronous motor (42), a second synchronous motor (43), a first driving gear (44) and a second driving gear (45); the first synchronous motor (42) and the second synchronous motor (43) are both mounted at the bottom end of the circular frame (1); the first driving gear (44) and the second driving gear (45) are both located on the upper side of the circular frame (1); the driving shaft of the first synchronous motor (42) passes through the circular frame (1) to form the installation of the first driving gear (44); the driving shaft of the second synchronous motor (43) passes through the circular frame (1) to form the installation of the second driving gear (45); A synchronization ring (40) is rotatably connected to the top of the circular frame (1), a second synchronization ring (41) is rotatably connected to the top of the first synchronization ring (40), a first drive gear (44) is meshed with the inner ring surface of the first synchronization ring (40), the first synchronization ring (40) is externally meshed and transmission-connected with a plurality of first transmission gears (46), the plurality of first transmission gears (46) are respectively fixedly connected to a plurality of short connecting shafts (38), a second drive gear (45) is meshed with the inner ring surface of the second synchronization ring (41), the second synchronization ring (41) is externally meshed and transmission-connected with a plurality of second transmission gears (47), the plurality of second transmission gears (47) are respectively fixedly connected to a plurality of long connecting shafts (39).

8. The adjustable multi-angle drilling device for coal mining according to claim 7, characterized in that: The bottom ends of the leg frames (36) except one leg frame (36) are fixedly connected to a stepped insertion column (48), the stepped insertion columns (48) are each provided with a leg shell (49), the leg shells (49) are each fixedly connected with a return coil spring (50), the return coil springs (50) are respectively connected to the stepped insertion columns (48), the leg shells (49) are each provided with a support plane, and the support planes are respectively in contact with the bottom ends of the stepped insertion columns (48).

9. The adjustable multi-angle drilling device for coal mining according to claim 8, characterized in that: An outer support mounting frame (51) and a plurality of auxiliary ring frames (52) are fixedly connected to the outside of the support mounting cylinder (20); the torque motor (22) is mounted on the outer support mounting frame (51); a spur gear ring (53) and a spur gear (54) are respectively mounted on the rotating cylinder (21) and the output shaft of the torque motor (22); the spur gear ring (53) is meshed with the spur gear (54).

10. The adjustable multi-angle drilling device for coal mining according to claim 9, characterized in that: A protective support plate frame (55) is fixedly connected to the circular frame (1).

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