Feeding system suitable for underground electric drive drilling machine

Abstract

The utility model discloses a feeding system suitable for an underground electric drive drilling machine, which comprises a rack, a feeding device, a clamp holder and a gyrator, the feeding device comprises a feeding box body, a motor, a lead screw assembly and a carriage assembly, and the gyrator is arranged on the carriage assembly; the clamp holder is installed on the clamp holder box body and comprises a top plate and a bottom plate and further comprises a clamping unit installed between the top plate and the bottom plate. The clamping unit comprises a first electric control clamping unit and a second electric control clamping unit; according to the feeding system suitable for the underground electrically-driven drilling machine, the feeding device comprising a ball screw transmission structure is adopted, the feeding device is matched with the clamping device and the gyrator to achieve electrically-controlled feeding of the drilling machine, and the feeding device is simple in structure, convenient to operate and high in practicability. Complicated rubber pipe arrangement and troubleshooting are avoided, and the power unit is not prone to being damaged when suddenly encountering an area with high geological hardness.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a feeding system suitable for an underground electric drive drilling rig. Background Art

[0002] Most underground tunnel drilling rigs in coal mines are fully hydraulically driven. Ordinary drilling rigs use pilot hydraulic control reversing valves, which are remotely controlled by a handle. Electro-hydraulic controlled automated drilling rigs replace pilot hydraulic control valves with solenoid valves, which are remotely controlled by a remote controller. The drilling space in underground tunnels in coal mines is limited, and the working conditions are complex. With the continuous improvement of auxiliary functions such as automatic loading and unloading of drilling tools, when hydraulic transmission is used, the drilling rig fails, and the intricate hoses need to be troubleshooted. Due to the small internal space of the drilling rig, it is difficult to disassemble and repair the hoses when filling them with oil.

[0003] As the underground tunnel drilling industry in coal mines develops in a more intelligent, green and sustainable direction, the electronic control of the feeding device has the following advantages over the hydraulic control: the electric cylinder does not require hydraulic oil or air as a medium, the performance is not easily affected by the external environment, and it has the advantages of simple structure, high precision, flexible operation, high safety and low maintenance cost. The hydraulic system can usually achieve an efficiency of about 40-55%, while the efficiency of the electric cylinder system is usually in the range of 75-80%, and there is no hysteresis effect, dead zone, pressure supply and temperature change problems. However, compared with the hydraulic cylinder feeding, the electric cylinder itself has no buffering characteristics. During the feeding operation, it is easy to cause problems such as damage to the power unit when suddenly encountering an area with high geological hardness. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a feed system suitable for downhole electric drive drilling rigs, so as to solve the problems of complicated arrangement of hoses in the prior art device, difficult troubleshooting and easy damage to the power unit when suddenly encountering an area with high geological hardness.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions to achieve the above problems: a feeding system suitable for an underground electric-driven drilling rig, comprising a frame and a feeding device, a clamp and a rotator installed on the frame, the feeding device comprising a feeding box installed on the frame, a motor installed at one end of the feeding box and a screw assembly connected to the motor, and the screw assembly is located inside the feeding box.

[0006] The feeding device also includes a carriage assembly installed on the lead screw assembly, and the lead screw assembly can drive the carriage assembly to move along the upper surface of the feeding box.

[0007] The rotator is installed on the carriage assembly.

[0008] The clamp is mounted on a clamp box, and the clamp box is mounted on a frame with an upper surface flush with an upper surface of a feed box.

[0009] The clamp comprises a top plate and a bottom plate which are arranged in parallel, and the clamp further comprises a clamping unit which is installed between the top plate and the bottom plate.

[0010] The clamping unit comprises a first electrically controlled clamping unit and a second electrically controlled clamping unit symmetrically installed between the top plate and the bottom plate.

[0011] A clamping cavity is formed between the first electrically controlled clamping unit and the second electrically controlled clamping unit, and the clamping cavity is coaxial with the rotation center of the rotator.

[0012] The second electrically-controlled clamping unit has the same structure as the first electrically-controlled clamping unit.

[0013] The utility model also has the following technical features:

[0014] The feeding box is in the shape of a hollow rectangular parallelepiped with an open top surface and one end surface.

[0015] The open end of the feed box is connected to the motor through the motor flange, and the closed end of the feed box is connected to the clamp box.

[0016] Guide rail assemblies are respectively installed on both sides of the open top surface of the feed box, and the guide rail assemblies are used in conjunction with the drag plate assemblies.

[0017] The screw assembly comprises a cylinder barrel, which is a hollow cylindrical body with two open ends, one end of which is connected to the motor flange, and the other end of which is connected to the closed end of the feed box through a cylinder barrel support block.

[0018] The cylinder barrel is provided with side grooves on both sides along its own axial direction, and is also provided with a bottom groove along its own axial direction, and the bottom groove faces the bottom plate of the feed box body.

[0019] The screw assembly also includes a screw arranged in the cylinder and a base sleeved on the screw. The base is provided with connecting blocks on both sides along the axis direction thereof, and the connecting blocks extend out of the side grooves.

[0020] A clamp is also sleeved on the base. The clamp is in the shape of a hollow semi-cylinder with open ends and is located outside the cylinder as a whole. The two ends of the clamp are respectively connected to the connecting blocks.

[0021] The lead screw and the output shaft of the motor are connected via a coupling.

[0022] The lead screw and the cylinder are connected via a bearing.

[0023] A clamp side plate is also installed on the side wall of one end of the clamp connected to the connecting block.

[0024] The carriage assembly comprises a carriage body and mounting flanges on both sides of the carriage body along its length direction.

[0025] The carriage assembly also includes lining plate assemblies installed on both sides of the carriage body along its length direction.

[0026] The liner assembly comprises:

[0027] A lower lining plate is installed on the mounting flange, wherein the width of the lower lining plate is greater than the width of the mounting flange.

[0028] An upper lining plate is installed on one side of the carriage body including the mounting flange, and the upper lining plate has the same direction as the lower lining plate and is closely attached to the mounting flange.

[0029] A side lining plate is installed on the side of the mounting flange facing the side of the carriage body.

[0030] The trailer assembly also includes mudguards installed at both ends of the mounting flange along its length direction. The mudguards are installed through a pressing plate, and the lower surface of the mudguard is flush with the upper lining plate.

[0031] The lower lining plate, the upper lining plate and the side lining plates together form a guide rail slide groove, and the guide rail slide groove cooperates with the guide rail assembly.

[0032] The carriage assembly further comprises a clamp transmission member installed on one side of a mounting flange installed on the carriage body, and the clamp transmission member cooperates with the clamp.

[0033] The clamp transmission member comprises a pair of parallel clamp transmission plates installed on one side of a mounting flange installed on the carriage body, and a clamp transmission groove is provided in the center of the clamp transmission plate along its length direction, and the clamp transmission groove cooperates with the clamp.

[0034] The two ends of the drag plate assembly are also connected to waterproof shutters, which are covered on the upper surface of the feed box, and the other two ends of the waterproof shutters are connected to the two ends of the upper surface of the feed box.

[0035] The angles between the first electrically controlled clamping unit and the second electrically controlled clamping unit and the symmetry axes of the top plate and the bottom plate are α respectively, and the distance between the first electrically controlled clamping unit and the second electrically controlled clamping unit at one end facing the rotator is greater than the distance between the first electrically controlled clamping unit and the second electrically controlled clamping unit at one end facing away from the rotator.

[0036] The first electrically controlled clamping unit comprises an electric cylinder and a wedge-shaped slip connected to an output shaft of the electric cylinder, and the electric cylinder can drive the wedge-shaped slip to move along the direction of the output shaft of the electric cylinder.

[0037] The wedge-shaped slip is generally in a rectangular shape, and a clamping groove penetrating the top and bottom surfaces of the wedge-shaped slip is opened on the side wall of one side along its length direction, and the clamping groove is parallel to the symmetry axis of the top plate and the bottom plate.

[0038] The other side of the wedge-shaped slip with the clamping groove is provided with a slope penetrating the top and bottom surfaces thereof, and the angle between the slope and the symmetry axis of the top plate and the bottom plate is α, and α is 10°.

[0039] The cross section of the wedge-shaped slip along the clamping groove and the slope direction is trapezoidal.

[0040] Compared with the prior art, the utility model has the following technical effects:

[0041] (I) The utility model provides a feeding system suitable for an underground electric drive drilling rig, which adopts a feeding device including a ball screw transmission structure, and cooperates with a clamp and a rotator to realize the electric control feeding of the drilling rig, thereby avoiding complicated hose arrangement and troubleshooting, and is not easy to cause damage to the power unit when suddenly encountering an area with high geological hardness.

[0042] (II) The clamp adopted by the utility model drives the lead screw through the motor in the electric cylinder, and the output shaft of the electric cylinder pushes and pulls to drive the wedge-shaped slip to move, which can realize freedom in both X and Y directions and realize the clamping of the drilling tool. It can avoid the complex arrangement of the hose, which is not conducive to later maintenance and other problems, and can be better adapted to the electric control drilling rig.

[0043] (III) The feeding system suitable for underground electric drive drilling rigs provided by the utility model has a simple structure and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 The utility model is a schematic diagram of the overall structure of the feeding system suitable for an underground electric drive drilling rig.

[0045] Figure 2 It is a structural schematic diagram of the feeding device of the utility model.

[0046] Figure 3 It is a schematic diagram of the structure of the carriage assembly.

[0047] Figure 4 It is a schematic diagram of the structure of the lower lining plate, upper lining plate and side lining plate.

[0048] Figure 5 It is a partial cross-sectional schematic diagram.

[0049] Figure 6 This is the overall structural diagram of the clamp of the utility model.

[0050] Figure 7 Schematic diagram of the wedge-shaped slip structure.

[0051] The meaning of each symbol in the accompanying drawings:

[0052] 0-frame, 1-feeding device, 2-clamp, 3-rotator, 4-waterproof roller shutter.

[0053] 1-1 feed box, 1-2 motor, 1-3 screw assembly, 1-4 carriage assembly, 1-5 motor flange, 1-6 guide rail assembly, 1-7 coupling, 1-8 bearing.

[0054] 1-3-1 cylinder barrel, 1-3-2 side groove, 1-3-3 bottom groove, 1-3-4 lead screw, 1-3-5 base, 1-3-6 connecting block, 1-3-7 clamp, 1-3-8 clamp side plate.

[0055] 1-4-1 carriage body, 1-4-2 flange, 1-4-3 lining assembly, 1-4-4 mudguard, 1-4-5 pressure plate, 1-4-6 clamp transmission part, 1-4-7 carriage displacement meter.

[0056] 1-4-3-1 lower lining, 1-4-3-2 upper lining, 1-4-3-3 side lining.

[0057] 2-1 clamp housing, 2-2 clamp assembly.

[0058] 2-2-1 top plate, 2-2-2 bottom plate, 2-2-3 clamping unit.

[0059] 2-2-3-1 first electrically controlled clamping unit, 2-2-3-2 second electrically controlled clamping unit.

[0060] 2-2-3-1-1 electric cylinder, 2-2-3-1-2 wedge-shaped slip, 2-2-3-1-3 clamping groove, 2-2-3-1-4 slope.

[0061] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0062] All components in the present invention, unless otherwise specified, are components known in the prior art.

[0063] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0064] Embodiment 1:

[0065] This embodiment provides a feeding system suitable for an underground electric drive drilling rig, such as Figure 1-Figure 4As shown, it includes a frame 0 and a feeding device 1, a clamp 2 and a rotator 3 installed on the frame 0. The feeding device 1 includes a feeding box 1-1 installed on the frame 0, a motor 1-2 installed at one end of the feeding box 1-1 and a screw assembly 1-3 connected to the motor 1-2, and the screw assembly 1-3 is located inside the feeding box 1-1.

[0066] The feeding device 1 also includes a carriage assembly 1-4 installed on the screw assembly 1-3, and the screw assembly 1-3 can drive the carriage assembly 1-4 to move along the upper surface of the feeding box 1-1.

[0067] The rotator 3 is installed on the carriage assembly 1-4.

[0068] The clamper 2 comprises a clamper box 2-1 and a clamper assembly 2-2 mounted on the clamper box 2-1. The clamper box 2-1 is mounted on the frame 0 and its upper surface is flush with the upper surface of the feed box 1-1.

[0069] The clamp assembly 2-2 includes a top plate 2-2-1 and a bottom plate 2-2-2 arranged in parallel, and the clamp 2 also includes a clamping unit 2-2-3 installed between the top plate 2-2-1 and the bottom plate 2-2-2.

[0070] The clamping unit 2-2-3 includes a first electrically controlled clamping unit 2-2-3-1 and a second electrically controlled clamping unit 2-2-3-2 symmetrically installed between the top plate 2-2-1 and the bottom plate 2-2-2.

[0071] A clamping cavity is formed between the first electrically controlled clamping unit 2 - 2 - 3 - 1 and the second electrically controlled clamping unit 2 - 2 - 3 - 2 , and the clamping cavity is coaxial with the rotation center of the rotator 3 .

[0072] The second electrically-controlled clamping unit 2-2-3-2 has the same structure as the first electrically-controlled clamping unit 2-2-3-1.

[0073] The two wear-resistant guide rail assemblies 1-6 are respectively fixed to the two sides of the open top surface of the feed box 1-1 with screws through the countersunk holes at both ends of the guide rails. As wearing parts, they are convenient for quick disassembly and replacement when they are worn too much. The four internal corners of both ends of the open top surface of the feed box 1-1 are connected to the motor flange 1-5 and the cylinder support block with bolts. The cylinder support block supports and fixes the tail end of the cylinder 1-3-1, playing the role of supporting the cantilever cylinder 1-3-1. The motor adopts an explosion-proof motor, and eight sets of bolts are used to connect the motor flange 1-5 in a circular distribution.

[0074] 1. The explosion-proof motor is selected according to the actual working requirements such as power and speed.

[0075] 2. The screw assembly 1-3 is not limited to single-track feeding, but can also be distributed on both sides of the double track. If a large torque is required, a planetary ball screw can also be used to meet the small size and large load transmission.

[0076] 3. The coupling can be star-shaped or plum-shaped as needed, and the two ends of the coupling can be connected by spline or flat key according to the screw and motor output shaft.

[0077] Based on the current supporting needs of intelligent drilling rigs in underground coal mines, this embodiment provides a feeding system suitable for underground electric-driven drilling rigs, which adopts a feeding device including a ball screw transmission structure, and cooperates with a clamp and a rotator to realize the electronically controlled feeding of the drilling rig, avoiding the complicated arrangement of hoses and troubleshooting, and is not easy to cause damage to the power unit when suddenly encountering an area with high geological hardness.

[0078] As a preferred embodiment of this invention:

[0079] The feeding box 1-1 is in the shape of a hollow rectangular parallelepiped with an open top surface and one end surface.

[0080] The open end of the feed box 1-1 is connected to the motor 1-2 through the motor flange 1-5, and the closed end of the feed box 1-1 is connected to the clamper box 2-1.

[0081] Guide rail assemblies 1-6 are respectively installed on both sides of the open top surface of the feed box 1-1, and the guide rail assembly 1-6 is used in conjunction with the drag plate assembly 1-4.

[0082] As a preferred embodiment of this invention:

[0083] like Figure 2 , Figure 5 As shown, the screw assembly 1-3 includes a cylinder 1-3-1, which is a hollow cylindrical body with both ends open, one end of which is connected to the motor flange 1-5, and the other end is connected to the closed end of the feed box 1-1 through a cylinder support block.

[0084] The cylinder barrel 1-3-1 is provided with side grooves 1-3-2 on both sides along its own axial direction, and is also provided with a bottom groove 1-3-3 along its own axial direction, and the bottom groove 1-3-3 is oriented toward the bottom plate of the feed box body 1-1.

[0085] The screw assembly 1-3 also includes a screw 1-3-4 arranged in the cylinder 1-3-1 and a base 1-3-5 sleeved on the screw 1-3-4. The base 1-3-5 is provided with connecting blocks 1-3-6 on both sides along its own axial direction, and the connecting blocks 1-3-6 extend out of the side groove 1-3-2.

[0086] The base 1-3-5 is also sleeved with a clamp 1-3-7, which is in the shape of a hollow semi-cylinder with open ends and is located as a whole on the outside of the cylinder 1-3-1. The two ends of the clamp 1-3-7 are respectively connected to the connecting block 1-3-6.

[0087] The lead screw 1-3-4 is connected to the output shaft of the motor 1-2 via a coupling 1-7.

[0088] The lead screw 1-3-4 is connected to the cylinder 1-3-1 via a bearing 1-8.

[0089] A clamp side plate 1-3-8 is also installed on the side wall of one end where the clamp 1-3-7 is connected to the connecting block 1-3-6.

[0090] The cylinder barrel 1-3-1 is provided with side grooves 1-3-2 on both sides and a bottom groove 1-3-3 on the bottom to facilitate discharge of working waste water that penetrates through the gaps of the waterproof roller curtain.

[0091] The lead screw assembly 1-3 is centered inside the lower part of the carriage assembly 1-4, and a 10-15mm gap is left between the end faces on both sides and the carriage assembly 1-4, leaving a margin for reversing operation. The lead screw assembly 1-3 is responsible for converting the rotational motion output by the explosion-proof motor into the linear motion required for work.

[0092] The connecting block 1-3-6 connects the clamp 1-3-7 and the base 1-3-5, and supports the clamp side plate 1-3-8, and can also prevent the clamp 1-3-7 from being worn and inconvenient to replace due to long-term friction with the cylinder barrel 1-3-1.

[0093] As a preferred embodiment of this invention:

[0094] like Figure 3-Figure 4 As shown, the carriage assembly 1-4 includes a carriage body 1-4-1, and the carriage body 1-4-1 has mounting flanges 1-4-2 on both sides along its length direction.

[0095] The carriage assembly 1-4 also includes lining plate assemblies 1-4-3 installed on both sides of the carriage body 1-4-1 along its own length direction.

[0096] The liner assembly 1-4-3 comprises:

[0097] The lower lining plate 1-4-3-1 is installed on the mounting flange 1-4-2, and the width of the lower lining plate 1-4-3-1 is greater than the width of the mounting flange 1-4-2.

[0098] An upper lining plate 1-4-3-2 is installed on the carriage body 1-4-1 and is included on one side of the mounting flange 1-4-2. The upper lining plate 1-4-3-2 is in the same direction as the lower lining plate 1-4-3-1 and is in close contact with the mounting flange 1-4-2.

[0099] A side lining plate 1-4-3-3 is mounted on the side of the mounting flange 1-4-2 facing the carriage body 1-4-1.

[0100] The towing plate assembly 1-4 also includes mudguards 1-4-4 installed at both ends of the mounting flange 1-4-2 along its own length direction. The mudguards 1-4-4 are installed through a pressure plate 1-4-5, and the lower surface of the mudguards 1-4-4 is flush with the upper lining plate 1-4-3-2.

[0101] The lower lining plate 1-4-3-1, the upper lining plate 1-4-3-2 and the side lining plate 1-4-3-3 together form a guide rail slot, and the guide rail slot cooperates with the guide rail assembly 1-6.

[0102] The carriage assembly 1-4 also includes a clamp transmission member 1-4-6 installed on one side of a mounting flange 1-4-2 installed on the carriage body 1-4-1, and the clamp transmission member 1-4-6 cooperates with the clamp 1-3-7.

[0103] The fender 1-4-4 is fixed to the carriage body 1-4-1 through the pressing plate 1-4-5, so as to timely clean and discharge the mixture of gangue, dust and waste water that falls on the guide rail during the working process.

[0104] A carriage displacement meter 1-4-7 is also installed on the carriage body 1-4-1.

[0105] As a preferred embodiment of this invention:

[0106] The clamp transmission member 1-4-6 comprises a pair of parallelly arranged clamp transmission plates installed on one side of a mounting flange 1-4-2 installed on the drag plate body 1-4-1, and the clamp transmission plate is provided with a clamp transmission groove in the center along its own length direction, and the clamp transmission groove cooperates with the clamp 1-3-7.

[0107] The base 1-3-5 drives the connecting block 1-3-7, and the connecting block 1-3-7 drives the clamp transmission groove and then drives the drag plate assembly 1-4 to move.

[0108] As a preferred embodiment of this invention:

[0109] The two ends of the drag plate assembly 1-4 are also connected to waterproof roller shutters 4, which cover the upper surface of the feed box 1-1, and the other two ends of the waterproof roller shutter 4 are connected to the two ends of the upper surface of the feed box 1-1. The use of the roller shutter type waterproof roller shutter 4 can avoid the problem of the drag plate shaking and jamming caused by the falling of waste water and gangue during the drilling process.

[0110] As a preferred embodiment of this invention:

[0111] like Figure 6 As shown, the angles between the first electrically-controlled clamping unit 2-2-3-1 and the second electrically-controlled clamping unit 2-2-3-2 and the axes of symmetry of the top plate 2-2-1 and the bottom plate 2-2-2 are α respectively, and the distance between the first electrically-controlled clamping unit 2-2-3-1 and the second electrically-controlled clamping unit 2-2-3-2 at one end facing the rotator 3 is greater than the distance between the first electrically-controlled clamping unit 2-2-3-1 and the second electrically-controlled clamping unit 2-2-3-2 at one end facing away from the rotator 3.

[0112] The first electrically-controlled clamping unit 2-2-3-1 includes an electric cylinder 2-2-3-1-1 and a wedge-shaped cava 2-2-3-1-2 connected to the output shaft of the electric cylinder 2-2-3-1-1. The electric cylinder 2-2-3-1-1 can drive the wedge-shaped cava 2-2-3-1-2 to move along the direction of the output shaft of the electric cylinder 2-2-3-1-1.

[0113] like Figure 7 As shown, the wedge-shaped cava 2-2-3-1-2 is generally in the shape of a rectangular parallelepiped, and a clamping groove 2-2-3-1-3 penetrating the top and bottom surfaces of the wedge-shaped cava 2-2-3-1-2 is provided on the side wall along one side of its own length direction, and the clamping groove 2-2-3-1-3 is parallel to the symmetry axis of the top plate 2-2-1 and the bottom plate 2-2-2.

[0114] The wedge-shaped slip 2-2-3-1-2 is provided with a clamping groove 2-2-3-1-3 and the other side thereof is provided with a slope 2-2-3-1-4 which runs through the top and bottom surfaces thereof. The angle between the slope 2-2-3-1-4 and the axis of symmetry of the top plate 2-2-1 and the bottom plate 2-2-2 is α. The installation space and the feeding device need to cooperate with each other, and the α is 10°.

[0115] The cross section of the wedge-shaped slip 2-2-3-1-2 along the clamping groove 2-2-3-1-3 and the slope 2-2-3-1-4 is trapezoidal.

[0116] The utility model provides an electric drill tool clamp, which drives the lead screw through the motor in the electric cylinder, and the output shaft of the electric cylinder pushes and pulls to drive the wedge-shaped slip to move, and can achieve freedom in both X and Y directions to clamp the drill tool, avoid the complex arrangement of the hose, and be unfavorable for later maintenance and other problems, and can be better adapted to the electric control drilling rig.

[0117] The specific working process of this embodiment is as follows:

[0118] During the drilling process of the drilling rig, after the new drill rod is added, the clamp 2 clamps the previous drill rod, and the rotator 3 chuck clamps the new drill rod and rotates forward. At this time, the rotator 3 installed on the feeding device 1 moves forward driven by the carriage assembly 1-4. After receiving the start command, the motor 1-2 drives the screw 1-3-4 to rotate through the coupling 1-7, and the bearing 1-8 supports and reduces the friction of the screw 1-3-4. Since the screw 1-3-4 is axially fixed, the screw 1-3-4 drives the base 1-3-5 to perform linear motion on the screw 1-3-4 at this time, and the clamp 1-3-7 follows the movement through the connecting block 1-3-6. When the clamp side plate 1-3-8 contacts the clamp transmission part 1-4-6, it drives the drag plate assembly 1-4 to move forward slowly until the newly added drill rod and the drill rod thread clamped by the clamp 2 are fully engaged. The drag plate assembly 1-4 stops moving forward, and waits for the clamp 2 to release the drill rod. The drag plate assembly 1-4 continues to move forward, and the rotator 3 rotates synchronously to start the drilling operation. The fender 1-4-4 cleans the guide rail debris in time, and the cleaned debris is discharged through the bottom groove 1-3-3 at the bottom of the cylinder 1-3-1. When the carriage assembly 1-4 and the rotator 3 move to the front end, the rotator 3 stops rotating, the clamp 2 clamps the drill rod, the rotator 3 chuck releases the drill rod, and the carriage assembly 1-4 drives it back to the end position, and the drill rod is added. The same applies to the drilling process.

[0119] In the process of drilling, if high-strength rock formations are encountered, in order to prevent the machine from burning, the motor's own stall protection is usually effective for 2 minutes. During this period, if the carriage displacement meter 1-4-7 detects that there is a drilling process, the motor will not be powered off. If no displacement is detected, the power-off protection is activated. When using a double-screw structure, the screws on both sides need to move synchronously to avoid distortion of the carriage. A gantry-type synchronous control driver can be used here. When there is a need to withdraw the drill, the feed motor and the rotary motor need to be controlled in coordination. The rotary motor cannot be stopped. The feed motor is reversed to withdraw the drill. The specific implementation is: the rotary motor keeps rotating forward at a low speed (the rotary motor cannot be reversed at this time. If the drill tool is stuck in the hole, a drill drop accident will occur). The feed motor reverses at a fixed speed to drive the carriage and the rotator to complete the withdrawal of the drill while the drill rod keeps rotating forward.

[0120] The above technical solutions are only preferred specific implementation methods of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present utility model without creative work are all covered within the protection scope of the present utility model.

Claims

1. A feeding system suitable for an underground electric drive drilling rig, comprising a frame (0) and a feeding device (1), a clamp (2) and a rotator (3) mounted on the frame (0), characterized in that: The feeding device (1) comprises a feeding box (1-1) mounted on a frame (0), a motor (1-2) mounted at one end of the feeding box (1-1), and a screw assembly (1-3) connected to the motor (1-2), wherein the screw assembly (1-3) is located inside the feeding box (1-1); The feeding device (1) further comprises a carriage assembly (1-4) mounted on the lead screw assembly (1-3), wherein the lead screw assembly (1-3) is capable of driving the carriage assembly (1-4) to move along the upper surface of the feeding box (1-1); The rotator (3) is installed on the carriage assembly (1-4); The clamp (2) comprises a clamp box (2-1) and a clamp assembly (2-2) mounted on the clamp box (2-1); the clamp box (2-1) is mounted on the frame (0) and its upper surface is flush with the upper surface of the feed box (1-1); The clamp assembly (2-2) comprises a top plate (2-2-1) and a bottom plate (2-2-2) arranged in parallel, and the clamp (2) further comprises a clamping unit (2-2-3) installed between the top plate (2-2-1) and the bottom plate (2-2-2); The clamping unit (2-2-3) comprises a first electrically controlled clamping unit (2-2-3-1) and a second electrically controlled clamping unit (2-2-3-2) which are symmetrically installed between the top plate (2-2-1) and the bottom plate (2-2-2); A clamping cavity is formed between the first electrically controlled clamping unit (2-2-3-1) and the second electrically controlled clamping unit (2-2-3-2), and the clamping cavity is coaxial with the rotation center of the rotator (3); The second electrically-controlled clamping unit (2-2-3-2) has the same structure as the first electrically-controlled clamping unit (2-2-3-1).

2. The feeding system suitable for underground electric drive drilling rig according to claim 1, characterized in that: The feeding box (1-1) is in the shape of a hollow rectangular parallelepiped with an open top surface and one end surface; The open end of the feed box (1-1) is connected to the motor (1-2) via the motor flange (1-5), and the closed end of the feed box (1-1) is connected to the clamp box (2-1); Guide rail assemblies (1-6) are respectively installed on both sides of the open top surface of the feed box (1-1), and the guide rail assembly (1-6) is used in conjunction with the carriage assembly (1-4).

3. The feeding system suitable for underground electric drive drilling rig according to claim 2, characterized in that: The screw assembly (1-3) comprises a cylinder (1-3-1), which is in the shape of a hollow cylinder with two open ends, one end of which is connected to the motor flange (1-5), and the other end of which is connected to the closed end of the feed box (1-1) through a cylinder support block; The cylinder barrel (1-3-1) is provided with side grooves (1-3-2) on both sides along its own axial direction, and is also provided with a bottom groove (1-3-3) along its own axial direction, and the bottom groove (1-3-3) faces the bottom plate of the feed box body (1-1); The screw assembly (1-3) further comprises a screw (1-3-4) arranged in the cylinder (1-3-1) and a base (1-3-5) sleeved on the screw (1-3-4); the base (1-3-5) is provided with connecting blocks (1-3-6) on both sides along the axis direction thereof; the connecting blocks (1-3-6) extend out of the side groove (1-3-2); The base (1-3-5) is also sleeved with a clamp (1-3-7), which is in the shape of a hollow semi-cylinder with open ends and is located as a whole outside the cylinder (1-3-1), and the two ends of the clamp (1-3-7) are respectively connected to the connecting block (1-3-6); The lead screw (1-3-4) is connected to the output shaft of the motor (1-2) via a coupling (1-7); The lead screw (1-3-4) and the cylinder barrel (1-3-1) are connected via a bearing (1-8).

4. The feeding system suitable for underground electric drive drilling rig according to claim 3, characterized in that: A clamp side plate (1-3-8) is also installed on the side wall of one end of the clamp (1-3-7) connected to the connecting block (1-3-6).

5. The feeding system suitable for underground electric drive drilling rig according to claim 3, characterized in that: The carriage assembly (1-4) comprises a carriage body (1-4-1), and mounting flanges (1-4-2) are arranged on both sides of the carriage body (1-4-1) along its length direction; The carriage assembly (1-4) further comprises lining plate assemblies (1-4-3) installed on both sides of the carriage body (1-4-1) along its length direction; The lining plate assembly (1-4-3) comprises: A lower lining plate (1-4-3-1) installed on the mounting flange (1-4-2), wherein the width of the lower lining plate (1-4-3-1) is greater than the width of the mounting flange (1-4-2); An upper lining plate (1-4-3-2) is installed on the side of the carriage body (1-4-1) including the mounting flange (1-4-2), wherein the upper lining plate (1-4-3-2) and the lower lining plate (1-4-3-1) are in the same direction and are in close contact with the mounting flange (1-4-2); A side lining plate (1-4-3-3) mounted on a side of the mounting flange (1-4-2) facing the carriage body (1-4-1); The trailer assembly (1-4) further comprises mudguards (1-4-4) mounted on both ends of the mounting flange (1-4-2) along its length direction, the mudguards (1-4-4) being mounted via a pressing plate (1-4-5), and the lower surface of the mudguards (1-4-4) being flush with the upper lining plate (1-4-3-2); The lower lining plate (1-4-3-1), the upper lining plate (1-4-3-2) and the side lining plate (1-4-3-3) together form a guide rail slide groove, and the guide rail slide groove cooperates with the guide rail assembly (1-6); The carriage assembly (1-4) further comprises a clamp transmission member (1-4-6) mounted on one side of a mounting flange (1-4-2) mounted on the carriage body (1-4-1), and the clamp transmission member (1-4-6) cooperates with the clamp (1-3-7).

6. The feeding system suitable for underground electric drive drilling rig according to claim 5, characterized in that: The clamp transmission member (1-4-6) comprises a pair of parallelly arranged clamp transmission plates installed on one side of a mounting flange (1-4-2) installed on the carriage body (1-4-1), and a clamp transmission groove is provided in the center of the clamp transmission plate along its length direction, and the clamp transmission groove cooperates with the clamp (1-3-7).

7. The feeding system suitable for underground electric drive drilling rig according to claim 1, characterized in that: The two ends of the drag plate assembly (1-4) are also connected to the waterproof rolling shutter (4), the waterproof rolling shutter (4) covers the upper surface of the feed box (1-1), and the other two ends of the waterproof rolling shutter (4) are connected to the two ends of the upper surface of the feed box (1-1).

8. The feeding system suitable for underground electric drive drilling rig according to claim 1, characterized in that: The angles between the first electrically controlled clamping unit (2-2-3-1) and the second electrically controlled clamping unit (2-2-3-2) and the symmetry axes of the top plate (2-2-1) and the bottom plate (2-2-2) are respectively α, and the spacing between one end of the first electrically controlled clamping unit (2-2-3-1) and the second electrically controlled clamping unit (2-2-3-2) facing the rotator (3) is greater than the spacing between one end of the first electrically controlled clamping unit (2-2-3-1) and the second electrically controlled clamping unit (2-2-3-2) facing away from the rotator (3); The first electrically controlled clamping unit (2-2-3-1) comprises an electric cylinder (2-2-3-1-1) and a wedge-shaped cava (2-2-3-1-2) connected to an output shaft of the electric cylinder (2-2-3-1-1), and the electric cylinder (2-2-3-1-1) can drive the wedge-shaped cava (2-2-3-1-2) to move along the direction of the output shaft of the electric cylinder (2-2-3-1-1).

9. The feeding system suitable for underground electric drive drilling rig according to claim 8, characterized in that: The wedge-shaped slip (2-2-3-1-2) is generally in a rectangular parallelepiped shape, and a clamping groove (2-2-3-1-3) penetrating the top and bottom surfaces of the wedge-shaped slip (2-2-3-1-2) is provided on a side wall along one side of the length direction of the wedge-shaped slip (2-2-3-1-2), and the clamping groove (2-2-3-1-3) is parallel to the symmetry axis of the top plate (2-2-1) and the bottom plate (2-2-2); The wedge-shaped slip (2-2-3-1-2) is provided with a clamping groove (2-2-3-1-3) and the other side is provided with a slope (2-2-3-1-4) penetrating the top and bottom surfaces thereof, and the angle between the slope (2-2-3-1-4) and the symmetry axis of the top plate (2-2-1) and the bottom plate (2-2-2) is α; The α is 10°; The cross section of the wedge-shaped slip (2-2-3-1-2) along the clamping groove (2-2-3-1-3) and the slope surface (2-2-3-1-4) is trapezoidal.

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