Crawler-type full-hydraulic machine-pump integrated tunnel drilling machine for coal mine

Abstract

This invention relates to the field of coal mine drilling rig technology, specifically disclosing a tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines. It includes a tracked vehicle, a drill rod box, and a control console, as well as a drilling mechanism and a mud circulation system. The drilling mechanism includes a drill bit, a drill rod, and a power head. A repair mechanism is provided on the upper side of the drill bit. The repair mechanism includes a moving part, a repair chamber, and a movable component. The repair chamber has a cavity inside for containing mud, and its upper end is open. A pressing component is elastically connected inside the repair chamber, with the side facing the borehole sidewall as the outer side. An adjusting component is slidably connected to the outer end of the repair chamber via an elastic component. When the adjusting component moves outward, it stretches the elastic component and stores force. A roller is rotatably connected to the adjusting component. A sealing component is also rotatably connected to the outer end of the repair chamber. The movable component is used to periodically push the adjusting component outward. This invention's tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines can improve the drilling quality.

Description

Technical Field

[0001] This invention relates to the field of coal mine drilling rig technology, specifically to a tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines. Background Technology

[0002] Mining refers to engineering activities that extract useful minerals and ores from the earth's crust. It is divided into two main types: open-pit mining and underground mining, and includes the entire process of exploration, development, mining, transportation, tailings / spoil disposal, and ecological restoration.

[0003] Open-pit mining, also known as open-cut mining, is a process of removing the covering material on the ore body to obtain the desired minerals. It is the process of extracting useful minerals from an open-surface mining site. Open-pit mining operations mainly include processes such as drilling, blasting, loading, transportation, and dumping. Its advantages are: high mining intensity, high efficiency, low cost, large-scale operation of large equipment, and relatively safe working environment.

[0004] Underground mining is a mining method that involves excavating shafts and tunnels below the surface to extract underground ore bodies. It differs from open-pit mining and is mostly used for ore deposits where the ore body is deeply buried and the surface is not suitable for stripping. This technology is widely used in metallic minerals, non-metallic minerals, and some coal mines. The ore body is buried at great depths, and shafts and tunnels are excavated from the surface to enter the underground, where the ore is extracted from the underground working face. Its advantages are: less surface damage, suitability for deeply buried minerals, and less occupation of surface land.

[0005] Coal mine drilling rigs are key equipment used for drilling operations in mining. They are mainly divided into two categories: underground tunnel drilling rigs and open-pit mining drilling rigs. The main types include: small anchor bolt / coal electric drills, medium-sized pneumatic / hydraulic drilling rigs, and large exploration / tunneling drilling rigs.

[0006] Among them, the tracked fully hydraulic tunnel drilling rig is a commonly used large-scale drilling equipment in coal mines. It is mainly used for drilling holes for gas drainage, water exploration and drainage, roof / floor penetration drilling, and grouting reinforcement drilling in coal mines. It relies on the tracked chassis to move independently in underground roadways. All movements are driven by the hydraulic system, making it a core piece of equipment for disaster management in coal mines.

[0007] Chinese patent document CN220504926U discloses a novel tracked fully hydraulic tunnel drilling rig for coal mines. The rig includes a main body and a mounting plate, with the mounting plate fixed to the right end of the main body. It also includes a lifting mechanism, two sets of moving blocks, a rotating mechanism, and a drilling mechanism. The lifting mechanism is mounted on the mounting plate and drives the two sets of moving blocks to move up and down. The rotating mechanism is mounted on the moving blocks and drives the drilling mechanism to rotate. The drilling mechanism is mounted on the rotating mechanism and is used for drilling in coal mines. The tunnel drilling mechanism includes a motor mounting plate, a first motor, two sets of lead screws, two sets of sprockets, a chain, and two sets of sliders. The first motor is fixed to the front bottom of the mounting plate via the motor mounting plate. The output end of the first motor is connected to one set of lead screws, and the two sets of lead screws are rotatably connected to the front and rear sides of the left side of the mounting plate, respectively. The two sets of sprockets are fixed to the bottom of the two sets of lead screws, and the two sets of sprockets are connected by chain drive. The two sets of sliders are screwed to the two sets of lead screws, and the moving block is fixed to the right end of the slider. The rotating mechanism includes a second motor, a rotating shaft, and a U-shaped block. The second motor is fixed to the front movable block, and its output end is connected to the rotating shaft. The rotating shaft is rotatably connected to two sets of movable blocks. A U-shaped block is fixed to the rotating shaft, and the drilling mechanism is mounted on the U-shaped block. The second motor drives the rotating shaft to rotate, which in turn drives the U-shaped block and the drilling mechanism to rotate, facilitating the adjustment of the drilling mechanism's angle. After the drilling mechanism angle is adjusted, the second motor is turned off, and its self-locking function limits the rotating shaft, thereby limiting the drilling mechanism's angle. The drilling mechanism includes a third motor, a first connecting block, and a second connecting block. The system includes a connecting block and a drill rod. A third motor is fixed to the left end of the U-shaped block, and the output end of the third motor is connected to the first connecting block. The second connecting block is bolted to the first connecting block, and the drill rod is fixed to the right end of the second connecting block. It also includes a protective cover, which is fixed to the bottom of the mounting plate and covers the first motor, sprocket, and chain. A wiring hole is provided at the rear end of the protective cover. Furthermore, it includes multiple sets of reinforcing plates, which are symmetrically fixed to the front and rear ends of the two sets of moving blocks, and are connected to the right ends of the two sets of sliders. A limit block is provided at the top of the lead screw shaft.

[0008] During operation, the main body of the tracked fully hydraulic tunnel drilling rig is first driven into the coal mine, and the first motor is started. The first motor drives the lead screw shaft to rotate, which in turn drives the sprocket to rotate. The two sets of sprockets are connected by a chain drive, so that the two sets of lead screw shafts rotate simultaneously, causing the slider to move the moving block up and down, thereby adjusting the height of the drill rod. Then, the second motor is started, which drives the rotating shaft to rotate. At this time, the rotating shaft drives the U-shaped block and the drill rod to rotate, which facilitates the adjustment of the angle of the drill rod when drilling into the coal mine tunnel. After the adjustment is completed, the third motor is started, which drives the first connecting block to rotate, which in turn drives the second connecting block and the drill rod to rotate, and then the drill rod is used to drill into the coal mine tunnel.

[0009] In the above technology, the first connecting block drives the second connecting block and the drill rod to rotate. When drilling a hole in a coal mine tunnel through the drill rod, the drill bit will squeeze the hole wall and disturb the hole wall, causing irregular depressions to form on the side wall of the hole, which affects the drilling quality of the drilling machine. Summary of the Invention

[0010] This invention provides a tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines. It aims to solve the technical problem in the prior art where, when drilling coal mine tunnels, the drill bit squeezes and disturbs the hole wall through the first connecting block driving the second connecting block and the drill rod to rotate, resulting in irregular depressions on the sidewalls of the hole and affecting the drilling quality of the drilling rig.

[0011] The present invention relates to a tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines, comprising a tracked vehicle, a drill rod box mounted on the tracked vehicle, and a control console mounted on the tracked vehicle. It also includes a drilling mechanism and a mud circulation system. The mud circulation system is used to deliver and recover mud into the borehole. The drilling mechanism includes a drill bit, a drill rod fixed to the drill bit, and a power head for driving the drill rod to rotate. A repair mechanism is provided on the upper side of the drill bit on the drill rod. The repair mechanism includes a moving part, a repair chamber, and a movable component. The moving part rotates synchronously with the drill bit. Simultaneously, the repair chamber is raised and lowered relative to the drill pipe. It is fixed to the movable component. The interior of the repair chamber forms a cavity for containing mud, and its upper end is open. An extrusion component is elastically connected inside the repair chamber, with the side facing the borehole sidewall as the outer side. An adjustment component is slidably connected to the outer end of the repair chamber through an elastic component. When the adjustment component moves outward, it stretches the elastic component and stores force. A roller is rotatably connected to the adjustment component. A sealing component is also rotatably connected to the outer end of the repair chamber. The movable component is used to push the adjustment component outward at intervals.

[0012] Beneficial effects: Through the design of the repair mechanism, during drilling, the moving parts rotate synchronously with the drill bit and rise and fall relative to the drill rod. The movable components periodically push the adjusting parts to move outward, causing the roller to abut against the borehole sidewall. As the adjusting parts move outward, they drive the sealing parts to rotate and open. The mud in the repair chamber flows out under the action of the extrusion parts and adheres to the depressions on the borehole sidewall. With the circumferential rotation of the moving parts, the borehole sidewall is repaired synchronously during drilling, filling the irregular depressions caused by drill bit disturbance and forming a stable mud wall, effectively improving the borehole forming quality and borehole wall stability. At the same time, the intermittent mud discharge design can precisely control the amount of mud used, avoiding mud waste. The repair action is carried out synchronously with the drilling process, without the need for additional machine stoppage, greatly improving drilling efficiency.

[0013] Preferably, the movable component includes a push block, a first push rod, a second push rod, and a limiting member. The inner end of the push block is rotatably engaged with the repair chamber, and the outer end of the push block is movably abutting against the adjusting member. The first push rod is elastically connected to the repair chamber and movably abuts against the lower side of the push block. The second push rod is elastically connected to the repair chamber and movably abuts against the upper side of the push block. The limiting member is fixed relative to the drill bit, and the lower end of the limiting member movably abuts against the first push rod, while the upper end of the limiting member movably abuts against the second push rod.

[0014] Preferably, the adjusting member is provided with an arc-shaped limiting groove, and when the push block is rotated to a horizontal state, its outer end extends into the limiting groove.

[0015] Beneficial effects: By setting the limiting groove, when the push block rotates to the horizontal position, it can be locked into the limiting groove, temporarily locking the extension position of the adjusting part, ensuring stable contact between the roller and the hole wall, preventing the adjusting part from rebounding too early, extending the effective stroke of slurry discharge and repair, and improving the uniformity of repair.

[0016] Preferably, a guide member is rotatably sleeved on the drill rod, the guide member is provided with a bidirectional spiral groove, the moving member slides in cooperation with the spiral groove, and the moving member slides longitudinally in cooperation with the limiting member.

[0017] Preferably, a plurality of rolling elements are fixed at the upper end of the guide member, and each rolling element is evenly spaced along the circumference of the guide member, and each rolling element is rolled into contact with the sidewall of the borehole.

[0018] Beneficial effects: By setting up the rolling element, the hole wall can be rolled and shaped, compacting the loose hole wall rock and soil, while also playing a radial straightening role, ensuring that the drill rod is coaxial with the drill hole, and improving the working accuracy of the repair mechanism and the straightness of the drill hole.

[0019] Preferably, the sealing component is rotatably connected to the repair chamber via a connecting shaft, the connecting shaft has a gear fixed at the bottom of the repair chamber, the roller is connected to the adjusting component via a rotating shaft, the rotating shaft extends to the bottom of the repair chamber and has an adjusting part fixed thereon, the adjusting part meshing with the gear.

[0020] Preferably, the adjusting member has a flattening part on its outer side, and the flattening part is inclined from the inside to the outside in a direction away from the repair chamber.

[0021] Beneficial effects: The inclined scraping part can evenly scrape and compact the mud onto the hole wall surface after it flows out and rotates circumferentially with the moving part, making the repaired hole wall flat and smooth, further improving the hole wall forming quality and enhancing the wall protection effect.

[0022] Preferably, a reset member is fixed at the upper end of the limiting member, the reset member is inclined downward from the inside to the outside, and the reset member is in movable contact with the outer end face of the extrusion member.

[0023] Beneficial effects: Through the cooperation of the reset component and the extrusion component, when the moving component rises, the reset component pushes the extrusion component inward, creating a negative pressure in the repair chamber and automatically replenishing mud from the top opening; when the moving component descends, the extrusion component moves outward, creating extrusion pressure on the mud in the chamber, promoting stable mud flow, realizing automatic mud replenishment and pressurization, and ensuring the continuity of repair operations.

[0024] Preferably, a cover plate is fixed on the upper side of the repair chamber, the inner end of the cover plate is located within the stroke range of the extrusion member, and the cover plate is provided with a through groove for avoiding the reset member.

[0025] Beneficial effects: By setting the cover plate, the cover plate can prevent rock debris in the borehole from entering the repair chamber, and at the same time limit the outward movement of the extrusion component to prevent the extrusion component from falling out; the through groove provides clearance space for the reset component to ensure that the structural movement does not interfere.

[0026] Preferably, there are multiple repair chambers, and each repair chamber is evenly spaced along the circumference of the moving part.

[0027] Beneficial effects: Multiple circumferentially arranged repair chambers can simultaneously repair multiple locations on the borehole wall, improving repair efficiency and circumferential uniformity, and ensuring that the entire borehole wall can be effectively repaired.

[0028] The beneficial effects of this invention are as follows:

[0029] 1. In this invention, through the setting of the repair mechanism, during the drilling process, the moving part rotates synchronously with the drill bit and rises and falls relative to the drill rod. The movable component pushes the adjusting part to move outward at intervals, so that the roller abuts against the sidewall of the borehole. While the adjusting part moves outward, it drives the sealing part to rotate and open. The mud in the repair chamber flows out under the action of the extrusion part and adheres to the depression of the sidewall of the borehole. With the circumferential rotation of the moving part, the sidewall of the borehole is repaired synchronously with the drilling, filling the irregular depressions caused by the disturbance of the drill bit, forming a stable mud wall, and effectively improving the forming quality and stability of the borehole. At the same time, the intermittent mud discharge design can accurately control the amount of mud used, avoid mud waste, and the repair action is carried out synchronously with the drilling process, without the need for additional machine stoppage, which greatly improves the drilling efficiency.

[0030] 2. In this invention, by setting up the movable components and guide components, the rotating power of the drill rod can drive the moving parts to reciprocate and lift, the adjusting parts to extend and retract at intervals, and the sealing parts to open and close automatically. No additional power components are required. The structure is simple and reliable, suitable for the narrow working space in coal mines, and improves the applicability of the drilling rig.

[0031] 3. In this invention, the hole wall can be processed in stages through a multi-stage operation process of pre-shaping of the rolling parts, filling of mud, and compaction of the leveling part. First, the loose rock and soil are compacted, then the depressions are filled, and finally the leveling and compaction are completed to form a flat and solid hole wall with a better repair effect. At the same time, multiple repair chambers are arranged circumferentially to ensure uniform circumferential repair of the hole wall and further improve the overall quality of drilling. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the hydraulic pump and the tracked vehicle of the present invention.

[0034] Figure 3 This is a top view of the console shown in this invention.

[0035] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0036] Figure 5 This is a schematic diagram illustrating the structure of the power head of the present invention.

[0037] Figure 6 This is a schematic diagram of the drill pipe structure shown in this invention.

[0038] Figure 7 This is a schematic diagram illustrating the structure of the movable component of the present invention.

[0039] Figure 8 This is a schematic diagram of the pusher block structure shown in this invention.

[0040] Figure label: 1. Drill pipe; 11. Drill bit; 12. Guide component; 13. Rolling component; 2. Moving component; 21. Repair chamber; 211. Sealing component; 212. Gear; 213. Cover plate; 22. Adjusting component; 221. Limiting groove; 222. Elastic component; 223. Scraping part; 23. Roller; 231. Adjusting part; 24. Extrusion component; 241. Reset component; 25. Limiting component; 251. Guide rod; 3. Push block; 31. Push rod one; 32. Push rod two; 40. Tracked vehicle; 50. Drill pipe box; 60. Control console; 70. Power head; 80. Hydraulic pump. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] Reference Figures 1-8 The present invention relates to a tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines, comprising a tracked vehicle 40, a drill rod box 50 mounted on the tracked vehicle 40, a control console 60 mounted on the tracked vehicle 40, a drilling mechanism, and a mud circulation system. The tracked vehicle 40 is a special explosion-proof tracked vehicle for underground coal mines, possessing self-propelled and steering functions, and can move flexibly within roadways. The drill rod box 50 is fixedly installed on the frame of the tracked vehicle 40 and is used to classify and store spare drill rods 1 and matching tools. The control console 60 is located on the operating side of the tracked vehicle 40 and integrates hydraulic and electrical control components to control all actions of the entire machine, including movement, drilling feed, and mud circulation. The mud circulation system includes a mud pump, a mud pit, and related pipelines. The mud circulation system is used to prepare, transport, and recover mud, maintain borehole wall stability, and assist in slag removal. The mud used in the circulation system is selected based on the geological conditions of the construction site, using appropriate mud materials (appropriate ratio of bentonite, water, and additives). The mud's specific gravity, viscosity, and other parameters are strictly controlled. The mud preparation method and the working method of the mud circulation system are existing technologies and will not be elaborated here. The mud circulation system also serves to cool the drill bit 11 and assist in wall protection. The drilling mechanism is used for drilling operations. During drilling, after the tracked vehicle 40 moves to the underground working position, the operator starts the equipment via the control console 60. The power head 70 drives the drilling mechanism to work, and the drilling mechanism performs drilling operations at the desired drilling location. The mud circulation system simultaneously delivers mud into the borehole. The drilling mechanism breaks up the rock and soil to form the borehole, and the mud carrying rock cuttings is discharged upwards along the borehole wall, realizing drilling operations in the coal mine.

[0043] Reference Figure 4 , Figure 5 and Figure 6The drilling mechanism includes a drill bit 11, a drill rod 1 fixed to the drill bit 11, and a power head 70 that drives the drill rod 1 to rotate. The drill bit 11 is a cemented carbide drill bit for coal mines. The drill bit 11 is fixedly connected to one end of the drill rod 1. The top end of the drill rod 1 is connected to the output end of the power head 70. The power head 70 is mounted on the feed frame of the tracked vehicle 40 to provide the drill rod 1 with rotational torque and axial feed force. The power head 70 drives the drill rod 1 and the drill bit 11 to rotate synchronously, and the drilling operation is realized in conjunction with the axial feed action.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The tracked vehicle 40 is equipped with a hydraulic pump 80, which provides pressure oil to the feed cylinder at the power head 70, the tracked vehicle 40 and other hydraulic actuators.

[0045] Reference Figure 6 , Figure 7 and Figure 8 The drill rod 1 has a repair mechanism on the upper side of the drill bit 11. The repair mechanism is lowered into the borehole synchronously with the drill rod 1 to achieve synchronous repair of the borehole wall during drilling. The repair mechanism includes a movable part 2, a repair chamber 21, and a movable component. The movable part 2 has a ring structure and is coaxially sleeved on the outside of the drill rod 1. The movable part 2 rotates synchronously with the drill bit 11 and can reciprocate along the axial direction of the drill rod 1. Specifically, a cylindrical guide 12 is rotatably sleeved on the drill rod 1. The outer circumference of the guide 12 has a bidirectional spiral groove. The movable part 2 is sleeved on the outside of the guide 12 and slides with the spiral groove. The movable part 2 is fixed relative to the drill bit 11 in its circumferential direction so that when the drill rod 1 drives the drill bit 11 to rotate, the movable part 2 can rotate synchronously with the drill bit 11. The guide 12 can rotate with the drill rod 1 through a bearing, that is, when the drill rod 1 rotates, the guide 12 does not rotate with the drill. When rod 1 rotates, the moving part 2 rotates with drill bit 11 and drill rod 1, and slides longitudinally along guide 12 under the action of spiral groove. To prevent mud from entering between moving part 2 and guide 12 and affecting their fit, the upper end of moving part 2 is sealed to the upper end of guide 12 through a flexible cover. The lower end of moving part 2 is also sealed to the lower end of guide 12 through a flexible cover. The cover is not shown in the figure. The cover is used to block the entry of mud and deforms when subjected to compression. The cover can be corrugated or cylindrical. The cover material is preferably plastic. During the process of drill bit 11 rotating downward to drill, when moving part 2 moves upward relative to guide 12, it only rotates relative to the borehole sidewall and does not move longitudinally relative to the borehole. The repair mechanism repairs and compacts the borehole sidewall during the process of moving part 2 moving upward relative to guide 12.

[0046] Reference Figure 6 , Figure 7 and Figure 8There are multiple repair chambers 21, each evenly spaced along the circumference of the moving part 2 and fixed to the moving part 2. The inside of the repair chamber 21 forms a cavity for containing mud, and the upper end of the repair chamber 21 is open. During the mud circulation process, the mud can enter the interior of the repair chamber 21 through the upper opening of the repair chamber 21 to replenish the mud consumed in the repair chamber 21 in a timely manner. The side facing the borehole sidewall is the outer side. The outer end of the repair chamber 21 is slidably connected to the adjusting part 22 through the elastic part 222. When the adjusting part 22 moves outward, it stretches the elastic part 222 and stores force. The elastic part 222 includes, but is not limited to, springs and elastic telescopic rods. The adjusting part 22 is also rotatably connected to the roller 23. The roller 23 is arranged around the axis of the drill rod 1. The surface of the roller 23 is made of wear-resistant rubber material to increase the friction with the borehole wall.

[0047] Reference Figure 6 , Figure 7 and Figure 8 The repair chamber 21 is internally elastically connected to a pressing member 24, which is connected to the repair chamber 21 via a spring. The pressing member 24 is located at the inner end of the repair chamber 21, and a sealing member 211 is rotatably connected to the outer end of the repair chamber 21. When the elastic member 222 is not under force, the adjusting member 22 does not contact the borehole sidewall at the outer end of the repair chamber 21. At this time, the sealing member 211 seals the outer end of the repair chamber 21, and the mud fills the internal cavity of the repair chamber 21. The spring connecting the pressing member 24 is in a charged state. To ensure the charged state of the pressing member 24, a cover plate 213 is also provided on the upper side of the repair chamber 21. The cover plate 213 does not completely cover the repair chamber. The repair chamber 21 is designed to allow slurry to be replenished through uncovered areas. The inner end of the cover plate 213 is within the deformation range of the spring. After the slurry is replenished into the repair chamber 21, the extruder 24 moves to the coverage area of ​​the cover plate 213 under the action of the spring. The slurry on the outside of the extruder 24 can no longer be squeezed out, and the elastic force of the spring connecting the extruder 24 is not fully released. When the sealing member 211 is opened later, the extruder 24 can still push the slurry to overflow and fill the pit. In order to avoid the slurry accumulating inside the extruder 24 and affecting the reset of the extruder 24, the inner side of the bottom plate of the repair chamber 21 is provided with a strip hole for slurry discharge.

[0048] Reference Figure 6 , Figure 7 and Figure 8When the elastic element 222 is stretched, the adjusting element 22 moves outward relative to the repair chamber 21 and fits against the borehole sidewall. The roller 23 rolls against the borehole sidewall. The sealing element 211 rotates relative to the repair chamber 21 and releases the seal on the outer end of the repair chamber 21. The sealing element 211 is rotatably connected to the repair chamber 21 via a connecting shaft. A gear 212 is fixed to the bottom of the repair chamber 21 via the connecting shaft. The roller 23 is connected to the adjusting element 22 via a rotating shaft. The rotating shaft extends to the bottom of the repair chamber 21 and is fixed with an adjusting part 231. When the roller 23 moves with the adjusting member 22, the sealing member 211 rotates under the meshing action of the adjusting part 231 and the gear 212. The squeezing member 24 pushes the mud outward under the elastic force of the spring. When it encounters a pit on the borehole sidewall, the mud is squeezed into the pit to fill and repair it. When the moving member 2 is stationary relative to the borehole sidewall in the longitudinal direction, the movable component pushes the adjusting member 22 to extend outward and repairs the pit on the borehole sidewall. At the same time, the roller 23 compacts the soil on the borehole sidewall.

[0049] Reference Figure 6 , Figure 7 and Figure 8 The movable components include a push block 3, a push rod 1 31, a push rod 2 32, and a limiting member 25. The limiting member 25 is fixed relative to the drill bit 11. A guide rod 251 is longitudinally fixed on the limiting member 25. The movable member 2 is slidably engaged with the guide rod 251. The inner end of the push block 3 is rotatably engaged with the repair chamber 21. The outer end of the push block 3 is movably abutting against the adjusting member 22. When the push block 3 rotates relative to the repair chamber 21, it pushes the adjusting member 22 to slide relative to the repair chamber 21. The push rod 1 31 is elastically connected to the repair chamber 21 and movably abuts against the lower side of the push block 3. The push rod 2 32 is elastically connected to the repair chamber 21 and movably abuts against the upper side of the push block 3. The lower end of the limiting member 25 is movably abutting against the push rod 1 31, and the upper end of the limiting member 25 is movably abutting against the push rod 2 32.

[0050] Reference Figure 6 , Figure 7 and Figure 8When the drill bit 11 rotates to drill, the moving part 2 moves downward along the guide part 12 as the drill bit 11 rotates, until the push rod 31 begins to contact the lower end of the limiting part 25. Under the squeezing action of the limiting part 25, the push rod 31 moves upward relative to the repair chamber 21 and gradually pushes the push block 3 upward. When the push block 3 rotates, the outer end of the push block 3 abuts against the adjusting part 22 and pushes the adjusting part 22 to move outward gradually. The adjusting part 22 is provided with an arc-shaped limiting groove 221. When the push block 3 rotates to the horizontal state, its outer end extends into the limiting groove 221. The adjusting part 22 moves to the outermost position and maintains its relative position with the repair chamber 21, and the push rod 31 pushes the push block 3 upward. When pushed to the horizontal position, the moving part 2 moves to the lowermost side of the guide part 12 and begins to move upward under the guidance of the bidirectional spiral groove. During the upward movement, it remains stationary relative to the borehole sidewall in the longitudinal direction. Conversely, when the moving part 2 moves upward to the guide part 12, the push rod 2 32 gradually abuts against the upper end of the limiting part 25 and slides downward relative to the repair chamber 21, pushing the push block 3 to disengage from the limiting groove 221 on the adjusting part 22. When the push block 3 moves downward, the adjusting part 22 resets under the elastic force of the elastic part 222. During the process of the drill bit 11 rotating to drill the borehole, the moving part 2 moves downward relative to the borehole as a whole and remains stationary relative to the borehole sidewall in the longitudinal direction at intervals.

[0051] Reference Figure 6 , Figure 7 and Figure 8 The upper end of the limiting member 25 is fixed with a reset member 241. The reset member 241 is inclined downward from the inside to the outside. The reset member 241 is in contact with the outer end face of the extrusion member 24. During the process of the repair chamber 21 moving upward relative to the guide member 12, the reset member 241 gradually contacts the outer end face of the extrusion member 24 and pushes the extrusion member 24 to move inward to reset. During this process, the spring connecting the extrusion member 24 is compressed and recharged.

[0052] Reference Figure 6 , Figure 7 and Figure 8 To improve the repair effect on the pits on the borehole sidewall and promote the mud to be fully smoothed in the pit, the adjusting part 22 is provided with a scraping part 223 on the outside. The scraping part 223 is plate-shaped and is inclined from the inside to the outside away from the repair chamber 21. During the rotation of the moving part 2, the scraping part 223 smooths the mud squeezed into the pit.

[0053] Reference Figure 6 , Figure 7 and Figure 8Multiple rolling elements 13 are fixed to the upper end of the guide member 12. Each rolling element 13 is evenly spaced along the circumference of the guide member 12. Each rolling element 13 is rolled and fitted with the borehole sidewall. Each rolling element 13 is used to further compact the inner wall of the borehole and improve the stability of the borehole sidewall. The rolling element 13 adopts a wear-resistant roller structure, and its outer end extends out of the outer wall of the guide member 12 and rolls against the borehole sidewall. During the drilling process, the rolling element 13 moves down synchronously with the guide member 12 and rolls along the circumference of the hole wall to perform preliminary rolling and shaping of the hole wall drilled by the drill bit 11, compacting the loose surface rock and soil, and at the same time playing a radial straightening role to ensure that the drill rod 1 is coaxial with the borehole and avoid borehole deviation.

[0054] The implementation principle of the tracked fully hydraulic pump-machine integrated tunnel drilling rig for coal mines of the present invention is as follows: When drilling, the tracked vehicle 40 moves to the underground working position and is fixed. The operator starts the equipment through the control console 60. The power head 70 drives the drill rod 1 and the drill bit 11 to rotate and feed downward. The mud circulation system synchronously delivers mud into the borehole. The drill bit 11 breaks the rock and soil to form a borehole. The mud carrying rock cuttings is discharged upward along the annular gap between the drill rod 1 and the borehole wall.

[0055] During the drilling process, the guide member 12 moves down synchronously with the drill rod 1. The rolling member 13 at its upper end first contacts the newly drilled hole wall, rolls around the hole wall and performs preliminary rolling and shaping on the hole wall, compacting the loose surface soil and rock, and at the same time forming radial support for the drill rod 1 to ensure the coaxiality and straightness of the borehole.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tracked, fully hydraulic, pump-and-machine integrated tunnel drilling rig for coal mines, comprising a tracked vehicle (40), a drill rod box (50) mounted on the tracked vehicle (40), and a control console (60) mounted on the tracked vehicle (40), characterized in that, It also includes a drilling mechanism and a mud circulation system. The mud circulation system is used to deliver and recover mud into the borehole. The drilling mechanism includes a drill bit (11), a drill rod (1) fixed to the drill bit (11), and a power head (70) for driving the drill rod (1) to rotate. The drill rod (1) has a repair mechanism on the upper side of the drill bit (11). The repair mechanism includes a moving part (2), a repair chamber (21), and a movable component. The moving part (2) rotates synchronously with the drill bit (11) and rises and falls relative to the drill rod (1). The repair chamber (21) is fixed on the moving part (2). 21) An internal cavity is formed to contain mud, and the upper end is open. An extrusion member (24) is elastically connected inside the repair chamber (21), with the side facing the borehole sidewall as the outer side. An adjustment member (22) is slidably connected to the outer end of the repair chamber (21) through an elastic member (222). When the adjustment member (22) moves outward, it stretches the elastic member (222) and stores force. A roller (23) is rotatably connected to the adjustment member (22). A sealing member (211) is also rotatably connected to the outer end of the repair chamber (21). The movable component is used to push the adjustment member (22) outward at intervals.

2. The integrated tracked hydraulic pump and press tunnel drilling rig for coal mines according to claim 1, characterized in that, The movable components include a push block (3), a push rod one (31), a push rod two (32), and a limiting member (25). The inner end of the push block (3) is rotatably engaged with the repair chamber (21), and the outer end of the push block (3) is movably abutted against the adjusting member (22). The push rod one (31) is elastically connected to the repair chamber (21) and movably abuts against the lower side of the push block (3). The push rod two (32) is elastically connected to the repair chamber (21) and movably abuts against the upper side of the push block (3). The limiting member (25) is fixed relative to the drill bit (11). The lower end of the limiting member (25) movably abuts against the push rod one (31), and the upper end of the limiting member (25) movably abuts against the push rod two (32).

3. The integrated tracked hydraulic pump and press tunnel drilling rig for coal mines according to claim 2, characterized in that, The adjusting member (22) is provided with an arc-shaped limiting groove (221), and when the push block (3) rotates to a horizontal state, its outer end extends into the limiting groove (221).

4. The integrated tracked hydraulic pump and press rig for coal mines according to claim 2, characterized in that, The drill rod (1) is rotatably fitted with a guide (12), the guide (12) is provided with a bidirectional spiral groove, the moving part (2) is slidably engaged with the spiral groove, and the moving part (2) is longitudinally slidably engaged with the limiting part (25).

5. The integrated tracked hydraulic pump and press tunnel drilling rig for coal mines according to claim 4, characterized in that, The upper end of the guide member (12) is fixed with a plurality of rolling members (13), and each rolling member (13) is evenly spaced along the circumference of the guide member (12), and each rolling member (13) is rolled in conjunction with the borehole sidewall.

6. The integrated tracked hydraulic pump and press rig for coal mines according to claim 1, characterized in that, The sealing component (211) is rotatably connected to the repair chamber (21) via a connecting shaft. A gear (212) is fixed to the bottom of the repair chamber (21) via the connecting shaft. The roller (23) is connected to the adjusting component (22) via a rotating shaft. The rotating shaft extends to the bottom of the repair chamber (21) and is fixed with an adjusting part (231). The adjusting part (231) meshes with the gear (212).

7. The integrated tracked hydraulic pump and press tunnel drilling rig for coal mines according to claim 1, characterized in that, The adjusting member (22) has a flattening part (223) on its outer side, and the flattening part (223) is inclined from the inside to the outside in a direction away from the repair chamber (21).

8. The integrated tracked hydraulic pump and press tunnel drilling rig for coal mines according to claim 2, characterized in that, The upper end of the limiting member (25) is fixed with a reset member (241). The reset member (241) is inclined downward from the inside to the outside. The reset member (241) is in contact with the outer end face of the pressing member (24).

9. The integrated tracked hydraulic pump and press rig for coal mines according to claim 8, characterized in that, The repair chamber (21) is fixed with a cover plate (213) on the upper side. The inner end of the cover plate (213) is located within the stroke range of the extrusion member (24). The cover plate (213) is provided with a through groove for avoiding the reset member (241).

10. The integrated tracked hydraulic pump and press rig for coal mines according to claim 1, characterized in that, There are multiple repair chambers (21), and each repair chamber (21) is evenly spaced along the circumference of the moving part (2).

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