2133results about "Percussion drilling" patented technology

The present invention relates to a coal mine intelligent directional drill and its drilling method, belonging to the technical field of coal mine drills. It comprises a moving platform, machine frame, clamper, main manipulator, power head, drill pipe storage system, control system, and hydraulic system. The power head structure is improved by adding an angle adjuster with accurate angle adjustment, locking, and anti-rotation functions. The angle adjuster is positioned on the gearbox side opposite the main motor, connected via a driving shaft. The control system includes a toolface azimuth detection and initialization system that works with the angle adjuster. This solves prior issues such as the absence of specialized toolface azimuth adjustment devices, low precision, low track adjustment efficiency, and challenges in achieving automatic directional drilling in the prior art. The invention enhances precision and efficiency, enabling automated, intelligent directional drilling.

The invention discloses an anti-jamming coal mining drilling machine with drilling and multidirectional impacting functions and a using method thereof.The anti-jamming coal mining drilling machine comprises a drilling machine body, a high-pressure driving mechanism is arranged on the drilling machine body through a multidirectional guide rail mechanism, and a drilling assembly is connected with the high-pressure driving mechanism; when the drilling machine works, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, the high-frequency transverse vibration mechanism synchronously generates transverse high-frequency vibration, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, and the high-frequency transverse vibration mechanism drives the drill rod and the drill bit to conduct rotary drilling. The friction force between the drill bit and rock is reduced, debris accumulation is prevented, efficient deslagging is achieved, when hard rock or drill jamming occurs, the longitudinal vibration impact mechanism triggers longitudinal vibration, impact and drill jamming prevention functions are achieved through cooperative work of transverse vibration and longitudinal vibration, the drill jamming problem under the complex geological condition is effectively solved, the drilling efficiency and equipment reliability are improved, and the drilling cost is reduced. The device is suitable for drilling operation of mining roofs and baseplates, sides and the like.

The invention discloses a self-adaptive rock drilling control method and a drill jumbo. The self-adaptive rock drilling control method comprises the steps that S1, initialization is conducted, specifically, parameters including the quality of a drilling component, a drilling included angle, a calculation coefficient, target propulsion pressure, target impact pressure and control parameters are initialized based on a control system before operation; s2, drilling is conducted according to the initialized parameters, the number of drill rods is recorded by a drill rod number counter, and impact pressure compensation and propelling pressure compensation are conducted according to the increased number of the drill rods; s3, adjusting the output propulsion pressure based on the difference between the target rotation pressure and the actual rotation pressure to enable the actual rotation pressure to tend to the target rotation pressure, adjusting the impact pressure based on the relation between the effective impact pressure and the effective propulsion pressure to enable the effective impact pressure to tend to the target impact pressure, and ensuring that the effective rock drilling parameters at the drill bit are matched with the rock. It is guaranteed that the effective propelling pressure and impact pressure at the drill bit meet the requirements, and therefore the drilling precision and quality are guaranteed.

The utility model discloses a hydraulic rock drill which comprises a machine body composed of a machine base, a cylinder body, a middle body, a gear box, a gear box cover and a machine head which are sequentially connected, a first cavity for containing an impact piston and a second cavity for containing a bit shank are formed in the machine body, and a cooling lubricating cavity communicated with the first cavity and the second cavity is formed in the machine body. An air inlet chamber is formed in the machine base, and an air inlet communicated with the air inlet chamber is formed in the rear end of the machine base. The impact piston is provided with a central channel which is communicated with the air inlet chamber and the cooling and lubricating air chamber; an air passing channel which is communicated with a gap between the bit shank, the rotary assembly and the machine head and a gap between the bit shank and the machine head part is formed in the machine head; cooling and lubricating air introduced into the air inlet chamber enters the cooling and lubricating cavity through the center channel of the impact piston, sequentially passes through the bit shank, the gap between the rotary assembly and the machine head and the air passing channel, enters the gap between the head of the bit shank and the machine head and is blown out, and the situation that the cooling effect is poor due to the fact that air flow is poor after heat exchange is avoided.

The invention discloses an embedding device for a pore pressure sensor, and relates to the technical field of pore pressure sensor embedding, the embedding device comprises a drill hole cleaning mechanism and a first mounting ring mounted at the bottom of the drill hole cleaning mechanism, a cleaning mounting mechanism is arranged on the outer side of the drill hole cleaning mechanism, and a lifting support is arranged at the top of the cleaning mounting mechanism; the drilling cleaning mechanism comprises a fixing ring, first rotating supports are symmetrically installed on one side of the top of the fixing ring, first rotating motors are fixedly installed on the outer sides of the first rotating supports, and the output ends of the first rotating motors are fixedly connected with first rotating worms. A conveying motor is started to drive a conveying rotating rod and a conveying spiral blade to rotate, soil and stone generated by drilling are conveyed into a collecting box by utilizing the structural characteristics of the conveying spiral blade, a cleaning scraper is driven by a drilling conveying cylinder to rotate, and the conveyed soil and stone can be collected and discharged through a blow-down valve.

The present invention discloses a mining blasting drilling device, which comprises a frame, a drilling machine top, a positioning frame, and a slide. A retractable cabin is installed on the frame, a pulling rope is led downward from the side bottom of the retractable cabin, a retractable shaft is installed in the retractable cabin, and the retractable shaft rotates to control the length of the pulling rope led to the outside of the retractable cabin. A driving cabin is installed at the bottom of the drilling machine top, and a lifting seat is installed in the driving cabin. A positioning plate is hingedly installed at the end of the positioning frame. The lifting seat descends and pushes the positioning frame to rotate outward, so as to drive the positioning plate to move outward and fit against the inner wall of the drilled hole. The lifting drive assembly can push the slide and drill rod downward and cooperate with the rotation of the drill rod to complete downward drilling. In the present invention, the pulling rope is gradually retracted and extended, so that the drilling structure penetrates deep into the hole. The entire hole is drilled through multiple descents and drillings. The depth of the drilling is not limited by the length of the drill rod, and the drilling depth can be directly controlled by the pulling rope, thereby improving the efficiency of the entire drilling process.

The utility model provides a split mountain drilling machine which comprises a first module, a second module and a remote gas conveying pipe, and the first module and the second module are arranged in a split mode; the first module comprises a hydraulic submodule and a power head assembly which are connected, the hydraulic submodule is used for conveying hydraulic oil to the power head assembly, and the power head assembly is used for driving a drill rod; the second module comprises an air compressor sub-module, the air compressor sub-module is connected with the first module through a remote air conveying pipe, and the air compressor sub-module is used for remotely conveying compressed air to the power head assembly. Through the arrangement, when drilling operation is carried out, after the first module is carried to a drilling operation point, the second module does not need to be carried to the same position along with the first module, the drilling operation can be smoothly carried out by remotely conveying compressed air to the first module through the second module, and the moving distance of the second module is greatly reduced; and personnel allocation for drilling operation can be reduced, single well consumption is reduced, and the drilling working efficiency is improved.

Disclosed are small model pit launch horizontal direction drills suitable for drilling a substantially horizontal bore hole and laying pipe underground from within a surface dug pit. The devices comprise a stationary frame and a carriage component competent to move forward and back along the frame and drill and retrieve an attached drill stem through an aperture in the frame. The carriage components are configured to allow an operator to straddle the carriage and operate the device from a seated position within the frame component interior.

The invention discloses a drilling and cutting head, a drilling and cutting device, a gob-side entry retaining slotting method and a roof cutting pressure relief method, and belongs to the technical field of mine drilling and cutting. The drilling and cutting head comprises a vehicle body, a drilling rod and the drilling and cutting head, and the vehicle body is rotationally provided with a drilling rod conveying driving mechanism through a connecting base and a rotary table; a water cutting system is further installed on the vehicle body. The drilling and cutting head comprises a mounting seat, a plurality of drill bit seats and drill bit blocks, an inner cavity is formed in one end of the mounting seat, and mounting holes are formed in the side wall of the mounting seat; a spray hole is formed in the middle of the spray head. And the end part of the inner cavity of the drilling and cutting head is connected with the head drill rod. Through one device, two operation procedures of drilling and water cutting can be achieved, high efficiency of the gob-side entry retaining slotting method and the top cutting pressure relief method can be achieved, the device cost is effectively reduced, the device can be flexibly and conveniently used in a roadway, the operation efficiency is effectively improved, and the device cost is reduced.

The invention relates to the field of tunnel engineering, and discloses a vertical drilling and grouting all-in-one machine for micro-disturbance grouting in a subway tunnel hole and a technological method.The vertical drilling and grouting all-in-one machine comprises a base used for supporting the whole device, a sliding rail is installed on the inner wall of the base, and a supporting frame is installed at the end, close to the center line of the base, of the sliding rail; a drilling and injecting mechanism is arranged on the outer wall of the sliding rail, and a sealing assembly is arranged on the upper surface of the base. The drilling and injecting mechanism comprises a sliding frame, the sliding frame is slidably connected to the outer wall of the sliding rail, the front surface of the sliding frame is fixedly connected with a supporting plate, the lower surface of the supporting plate is rotatably connected with a drilling rod, and the lower end of the drilling rod is in threaded connection with a connector. According to the drilling and grouting device, the drilling and grouting mechanism is arranged, the hollow drill rod is adopted for drilling, during grouting operation, drilling operation can be achieved through rotation of the drill rod, then the drill rod can be directly connected with grouting equipment, and therefore grouting can be achieved through the drill rod directly.

The invention provides a drilling rig for geological exploration, and relates to the technical field of drilling, the drilling rig comprises a motor mounted on a lifting frame, the extending end of the motor is connected to an inner rod, an outer wheel is coaxially arranged outside the inner rod, a plurality of fixing rods are arranged at the upper end of the outer wheel at equal intervals, and the fixing rods are connected to the inner rod. The drilling device has the most prominent advantage that the drilling device has a unique anti-jamming protection mechanism, when a sampling pipe is jammed by a hard stratum or foreign matters in the drilling process, the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, and the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, so that the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism. Power transmission between the motor and the sampling pipe is not rigid connection any more, controlled separation is achieved through a designed combination of a gear system and a friction disc, the motor continues to operate, but not all torque is directly transmitted to the clamped sampling pipe, part of energy is converted into surrounding motion through a rotating wheel system, and therefore the sampling pipe can be separated. And the risk of burnout of the motor due to overload is effectively avoided.

The invention provides a combined sand drain drainage structure suitable for a high slope. The combined well drainage structure comprises a row of vertical sand well structures arranged in the side slope along the slope surface line of the side slope and siphon drainage structures arranged at the bottom ends of the row of vertical sand well structures. The vertical sand well structure comprises a vertical well hole, a water permeable pipe and a gravel inverted filter layer, and the water permeable pipe is filled with gravel; the siphon drainage structure comprises a siphon water guide pipe, a horizontal drainage well structure and an inclined drainage pipe. Rainwater of the high slope is collected through the sand wells, the rainwater is collected into the horizontal drainage wells under the action of gravity, underground water collected by the horizontal drainage wells is drained from the drainage holes in the lowest end of the supporting structure through the siphon guide pipes, then negative pressure is generated in the horizontal drainage wells, and drainage of the vertical sand wells is further accelerated. The construction difficulty of the deep drainage structure of the high slope is reduced, and it is guaranteed that underground water enriched under the effects of rainfall, underground pipeline water leakage and the like can be drained in time and rapidly.

The invention relates to a soil sampling device for drilling, which comprises an outer drill rod, a sampling rod, an outer sampling pipe, a sampling drill bit, a sealing pipe, a sealing sleeve, an elastic binding belt, a cutting rod and the like, and is characterized in that the foldable sealing sleeve is gradually unfolded along with the entering process of a soil sample, and then the elastic binding belt is tightened to realize effective sample sealing; the overturning type cutting-off rod is driven by the sampling drill bit to evenly cut off a soil sample, disturbance is reduced, the sliding groove is formed between the sealing pipe and the guide rod to prevent mutual rotation, sealing liquid can be provided for the drill bit and the drill block through the through hole, abrasion is reduced, external pollution is blocked, and the device is compact in structure, convenient to install and disassemble, high in sampling efficiency and good in sample integrity. The method is suitable for the fields of geotechnical engineering investigation, environment monitoring and the like.

The invention discloses an in-situ coring system and method for a soft rock extension roadway bottom plate. The system comprises a stable anchoring base, a drilling driving and propelling module, a stress adjusting module, a low-disturbance coring module, a rock core in-situ packaging and fidelity module and an intelligent integrated control unit. The stable anchoring base is used for fixing the system on a roadway bottom plate; the drilling driving and propelling module provides rotating power and axial feeding force for the drilling tool; the stress adjusting module is used for adjusting the stress state around the rock core; the low-disturbance coring module comprises a composite function coring drill bit and a double-layer coring pipe, and low-disturbance cutting and containing of a rock core are achieved. The rock core in-situ packaging and fidelity module is used for sealing and packaging the rock core in real time; and the intelligent integrated control unit adaptively controls the coring process according to sensor data. According to the invention, low-disturbance, high-precision and in-situ fidelity rock core acquisition of the soft rock roadway bottom plate can be realized, and the problems of large soft rock coring disturbance, difficulty in fidelity, low intelligent degree and the like are effectively solved.

The invention relates to the technical field of coal mine underground drilling equipment, in particular to a gyrator for a coal mine directional drilling machine and a using method.The gyrator comprises a shell, an input shaft and an output shaft, the shaft extension end of the output shaft is provided with a pressure balance type multiple dynamic sealing system, and the sealing system comprises a main sealing unit, a pressure balance unit and a dustproof sealing unit; the pressure balance unit comprises a sealing cavity, a lubricating grease injection channel and a grease injection nozzle; pressure lubricating grease is injected into the sealing cavity through the grease injection nozzle, so that a dynamic positive pressure barrier higher than the internal medium pressure of the gyrator and the external pressure of the environment is formed in the sealing cavity; through a triple sealing structure formed by combining the spring seal main seal, the pressurization balance cavity and the V-shaped dustproof ring and by combining an active injection and dynamic balance using method, passive blocking of traditional sealing is converted into active defense, the problem of invasion of high-pressure slurry and pulverized coal is effectively solved, and the service life of the sealing device is prolonged. And the working reliability and the service life of the equipment are obviously improved.

The invention relates to the technical field of ore composition detection, and discloses an ore composition detection device which comprises a base, a sliding frame is fixedly assembled at the top of the base, a sliding block is slidably connected to the inner wall of the sliding frame, a rotating bottom plate is rotatably connected to the inner wall of the sliding block, and a round rod is fixedly assembled at the top of the rotating bottom plate. The outer edge of the round rod is sleeved with a cylinder in a sliding mode. The side face of a sliding block slides on the inner wall of a sliding frame to assist a fixing frame in height adjustment, the bottom of a storage barrel and the bottom of a partition barrel are in lap joint with the bottom of the inner wall of an outer drilling barrel, the outer drilling barrel drives a drill bit to move downwards, and therefore the inner wall of the drill bit slides upwards on the outer edge of the bottom of the outer drilling barrel; gas in an auxiliary containing cavity passes through a gas inlet cylinder to a clamping cylinder, so that a clamping frame and a rolling shaft are pushed to limit a storage cylinder, when a drill bit moves upwards, an adjusting gear is pushed through a square rod and an L-shaped toothed plate to drive a material guide plate to rotate, and an arc-shaped guide rod assists in guiding crushed mineral aggregate into the storage cylinder.

The invention belongs to the technical field of geological prospecting evaluation, and discloses an ore body positioning method and a rapid sampling device for niobium-tantalum ore target region prediction and evaluation. According to the method, based on existing geological data, various geologic bodies in a 1: 250,000-1: 10,000 geological map are analyzed, distribution, form, invasion contact relation, formation times and other characteristics of alkaline rock masses are found out, and a favorable metallogenic area is delineated; a linear structure, an annular structure and alteration information are recognized through satellites and aerial images, and target area positioning is assisted; the method comprises the following steps: exploring and detecting ore-bearing rock mass and fracture structures through a magnetic method, delineating potential positions of ore bodies, and inferring geological attributes of abnormal sources in combination with geological data; measuring the total amount of gamma at different positions in the niobium-tantalum prediction target area by using radioactive detection equipment, and preliminarily judging the position of the niobium-tantalum ore according to a gamma abnormal result; and carrying out systematic sampling and assay analysis on the target area by using the rapid sampling device. By means of the method and device, the metallogenic geological condition and the prospecting prospect can be evaluated, and the exploration network degree is optimized.

The invention relates to the technical field of drilling machines, and discloses a coal mine drilling machine with a drill bit convenient to replace, which comprises a main machine, a limiting seat is arranged on one side of the main machine, a shaft rod is fixedly butted to the output end of one side, close to the limiting seat, of the main machine, and a screw is fixedly connected to one end, away from the main machine, of the shaft rod; a telescopic rod is slidably connected to the side, close to the limiting seat, of the metal drill bit, a limiting ring is fixedly connected to the end, away from the metal drill bit, of the telescopic rod, a gear ring is fixedly connected to the side, close to the metal drill bit, of the limiting ring, a bearing is rotatably connected to the side, close to the metal drill bit, of the limiting seat, and a mounting rod is rotatably connected to the side, close to the gear ring, of the limiting seat. According to the coal mine drilling machine with the drill bit convenient to replace, the problem that when the drill bit just completes drilling work, the temperature of the drill bit is high, so that the drill bit cannot be replaced in time, and the drilling work efficiency is affected can be solved.

The invention discloses a rock-soil exploration self-adaptive drilling device based on modular design, and relates to the technical field of drilling, the rock-soil exploration self-adaptive drilling device comprises a drill bit, a plurality of rotating shafts are rotationally connected to the drill bit, cones are arranged on the rotating shafts, the rock-soil exploration self-adaptive drilling device further comprises a displacement assembly, the displacement assembly comprises guide grooves formed in the cones, the rotating shafts are in sliding connection with the guide grooves, and the displacement assembly is arranged in the guide grooves. The displacement assembly is arranged on the rotating shaft and used for driving the cone to deviate, the crushing assembly is arranged on the rotating shaft in a sliding mode and used for crushing obstacles, the crushing assembly comprises a push rod connected with the rotating shaft in a sliding mode, an ejector rod is fixedly connected to the push rod, and the power assembly is arranged between the displacement assembly and the crushing assembly. The power assembly is used for driving the crushing assembly to slide back and forth, the power assembly comprises a power wheel rotationally connected with the rotating shaft, and when the power wheel rotates, the power wheel drives the push rod to move back and forth through the ejector rod; when the drill bit is clamped, rock soil can be crushed in a self-adaptive mode, and meanwhile abrasion of the drill bit is reduced.

The present disclosure relates to a wellhead penetrator system comprising a penetrator body comprising a hollowed cylindrical frame connecting a top end to a bottom end; a cable seal located within the penetrator body, comprising: a cylindrical core made of a polymer having three cylinder-shaped port holes configured to each provide a path for of the three insulated electrical wires; a top side, wherein the port holes extend upward from the top side of the cable seal; and a bottom side facing into the cavity located in the bottom end of the penetrator body, wherein the port holes extend downward from the bottom side of the cable seal; and a follower comprising a cylindrical metal body and cylindrical holes, wherein the follower seats against the bottom side of the cable seal so that port holes of the cable seal protrude through the cylindrical holes of the follower.

The invention relates to the field of pore-forming control, and particularly discloses a drilling machine pore-forming method suitable for different rock stratums, comprising the following steps: S1, acquiring stratum data; s2, obtaining different rock stratum distribution data of the operation area according to the stratum data, and constructing a three-dimensional geologic model; s3, according to the three-dimensional geologic model, simulating to obtain an optimal drilling path without damaging the ground; s4, simulating an interaction mechanism of the drill bit and different rock stratums according to the optimal drilling path to obtain working parameters of the drill bit with the optimal hole forming quality in the different rock stratums; and S5, the working parameters of the drill bit in the different rock stratums are input into a control system of the jumbolter, and the control system adjusts the drill bit to the matched working parameters according to the data of the different rock stratums. The method can greatly improve the hole forming quality of the weathered rock stratum, improve the construction progress and reduce the engineering cost.

The invention relates to the technical field of power tower pile foundation construction equipment, and discloses a power tower foundation pile drilling equipment and a soil discharge method thereof, comprising a base, a gantry, several power heads, a drill rod and a drill bit; several mobile power sources are arranged on the base; a horizontal beam of the gantry is slidably installed between two vertical beams, and the vertical beams of the gantry are slidably installed on the base, and power output ends of the several mobile power sources respectively push the ends of the two vertical beams, and the sliding directions of the vertical beams are perpendicular to the length directions of the vertical beams and the vertical beams move closer to or away from the base when sliding; the drill rod is installed on the bottom end face of the horizontal beam, and the axis of the drill rod is parallel to the length direction of the vertical beam, and the drill rod is driven to rotate by the power output ends of the several power heads; the drill bit is fixedly installed at the bottom end of the drill rod, so that the drill bit can slide back to a position away from the drill hole and the base when completing slag cleaning, thereby solving the problem in the prior art that soil slag and rock chips easily fall into the pile hole or the equipment base when the drill bit cleans slag, thereby reducing the working efficiency of the drill bit.

The utility model relates to the technical field of rotary drilling bits, and discloses a steep terrain high-strength hard rock rotary drilling bit device which comprises a rotating disc, a mounting seat is arranged at the bottom of the rotating disc, and a connecting column is fixedly mounted on the middle side of the bottom of the rotating disc; according to the drill bit switching device, the servo positive and negative rotation motor drives the rotary disc to accurately rotate through cooperation of the transmission worm and the worm gear, rapid switching among different drill bits is achieved, and therefore the proper drill bits can be rapidly switched according to the terrain and stratum conditions of a construction site, and the drill bit switching device adapts to various complex geological conditions such as complex steep terrains and high-strength hard rocks; the construction flexibility and adaptability are improved, the problem that construction equipment is difficult to operate due to terrain and stratum limitation in traditional construction is effectively solved, various special geological structure and drilling requirements are met through the combined application technology of the bucket drill bit, the sand bailing drill bit, the cutting tooth barrel drill bit and the spiral drill bit, and the construction efficiency is improved. And the problem that machines and tools are seriously abraded in traditional rotary drilling dry method hole-forming pile foundation construction is solved.

The invention provides an efficient deep hole rotary drilling rig, and relates to the technical field of rotary drilling rigs. The efficient deep hole rotary drilling rig comprises a rotary drilling rig body and a drilling bucket. The drilling bucket comprises a barrel, a drilling claw assembly and a switch piece. The drilling claw assembly comprises a plurality of drilling claws and a plurality of drill bits; the drilling claw comprises a side plate, a bottom plate, a collecting piece and a limiting block; the side plates and the bottom plate are integrally formed, the bottom plate is provided with a soil inlet, the collecting piece is installed below the bottom plate, the limiting block is rotationally connected with the barrel, the limiting block is provided with a limiting hole, and the drill bit is installed at the bottom of the collecting piece. The switch piece comprises a motor, a turbine and a worm; the motor is installed on the barrel and electrically connected with the rotary drilling rig body, the turbine is installed on an output shaft of the motor, the worm is matched with the turbine and penetrates through the barrel, and the output end of the worm is matched with the limiting hole. The efficient deep hole rotary drilling rig solves the technical problems that according to an existing rotary drilling rig, opening and closing of a drilling bucket are tedious, and the rotary drilling efficiency is low.

The invention relates to the technical field of building construction, and discloses a house building foundation engineering construction device which comprises a multi-shaft pile driver body, a power integration box is installed on one side of the multi-shaft pile driver body in a limiting and sliding mode, and a plurality of stirring piles are rotatably installed at the output end of the power integration box; driving gears are fixedly mounted on the outer sides of the top ends of the stirring piles, the multiple driving gears are in meshing transmission, and mounting cavities formed in the inner side walls of the driving gears are further included. The connecting strength between the mixing pile and the driving gears is changed through coincidence or dislocation between the permanent magnet plates and the magnetism isolating plates, so that the probability that the mixing pile is damaged when the bottom end of the mixing pile encounters a hard obstacle is reduced, and the situation that a plurality of driving gears bear extra load and impact due to mutual meshing is avoided; the driving gear and the power system are protected, the service life of the multi-shaft pile driver body is prolonged, the influence of hard obstacles on the construction progress is reduced, and the construction progress and the engineering quality of the sealing wall are improved.

Oil drilling machine complete equipment comprises a crawler belt, a first platform and a second platform are movably assembled on the crawler belt, a derrick is further arranged on the first platform, the second platform is used for placing a drill rod, a lifting mechanism and a driving mechanism are further assembled on the derrick, and the lifting mechanism is connected with the driving mechanism. The first platform is further provided with a power system and a control machine room, the first platform is further provided with a protection enclosing wall, the protection enclosing wall wraps the derrick, the first platform is further provided with a drill hole, the drill hole is located under the driving mechanism, and a protection mechanism is assembled in the drill hole. A traditional mode that a power source is directly placed on a platform for holding and rotating is replaced through the driving mechanism, noise can be reduced through the driving mechanism, and power utilization is improved. By means of the protection mechanism, the drill rod can be protected without being taken out intermittently, the drill rod protection device can adapt to drill rods of different diameters and cannot be stuck, and the working efficiency is improved while drill rod abrasion is reduced.

The utility model discloses a drilling device for municipal public engineering construction, and relates to the field of drilling devices. The drilling device for municipal public engineering construction comprises a main body frame, a spiral drilling rod is installed on the front face of the main body frame, a supporting mechanism is arranged on the back face of the main body frame and comprises a supporting plate, the supporting plate is arranged on the back face of the spiral drilling rod, the supporting plate is slidably connected into the main body frame, and the supporting plate supports the spiral drilling rod; the movable plate is installed above the supporting plate, the movable plate is arranged in the main body frame in a sliding mode, the movable plate is used for driving the supporting plate to move, the hydraulic expansion piece is installed in the main body frame, and the hydraulic expansion piece is installed above the movable plate. According to the drilling device for municipal public engineering construction, by releasing or fixing the connection relation between the movable plate and the supporting plate, the movement mode of the spiral drilling rod is divided into two modes, and the movement of the spiral drilling rod is more stable and flexible.

The utility model discloses a geological drilling coring device which comprises a frame body, a placing table is installed on the upper portion of the frame body in a sliding mode, a motor is connected to the upper portion of the placing table through bolts, the motor is connected with a transmission shaft through a belt, a coring barrel is fixedly connected to the bottom of the transmission shaft, and a drill bit is fixedly connected to the bottom of the coring barrel. A cutting-off structure is arranged in the coring barrel and comprises a cavity and a first gear, a sliding block is slidably installed in the cavity, a rack is fixedly installed on the upper portion of the sliding block, a second gear is rotatably installed in the cavity, the second gear is connected with the rack in a meshed mode, and a double-face gear ring is rotatably installed at the upper position in the cavity. The double-face gear ring is connected with the second gear in a meshed mode, the double-face gear ring is connected with the first gear in a meshed mode, and a rotating shaft is fixedly installed at the top of the first gear. According to the geological drilling coring device disclosed by the utility model, a required core sample can be completely stored in the device.

The invention discloses a crawler-type double-arm hydraulic anchor rod drill carriage, and relates to the technical field of anchor rod drill carriages.The crawler-type double-arm hydraulic anchor rod drill carriage comprises a mounting shell, a crawler walking part is fixedly mounted at the bottom of the mounting shell, two sets of supporting hydraulic cylinders are fixedly connected to the left side and the right side of the crawler walking part through cross beams correspondingly, and the output ends of the four sets of supporting hydraulic cylinders are fixedly connected with supporting discs correspondingly; rotating bases are rotationally connected to the front side and the rear side of the left end of the interior of the mounting shell correspondingly, the upper ends of the two rotating bases penetrate through the top wall of the mounting shell and are fixedly connected with rotating tables correspondingly, drilling assemblies are installed above the two rotating tables correspondingly, and a first fluted disc is fixedly connected to the lower portion of the outer surface of the rotating base on the front side; a second fluted disc is fixedly connected to the upper portion of the outer surface of the rotating base on the rear side, and a double-station switching assembly is arranged at the position, on the right side of the rotating base, in the mounting shell. The invention has the advantages that: an independent hydraulic motor and an independent control system do not need to be configured for each drill boom, so that the overall structure is greatly simplified, and the production and maintenance cost is reduced.

The invention discloses a self-adaptive control method and system for lift and heat dissipating capacity, and relates to the technical field of thermal management, the current height difference between a power head and a water pump is determined, and then the target lift of the water pump is determined in combination with local resistance and on-way resistance of cooling liquid in a whole cooling loop; the rotating speed of the water pump is dynamically adjusted according to the target lift, so that the actual lift of the water pump is matched with the target lift, it can be ensured that cooling liquid can circulate with sufficient pressure and flow under different working conditions, and the conditions of insufficient circulation of the cooling liquid and too high energy consumption are effectively avoided. By monitoring the current environment temperature and the load current of the power head, the target heat dissipating capacity can be dynamically determined according to the environment temperature and the load current; and the rotating speed of the fan in the radiator is dynamically regulated and controlled according to the target heat dissipating capacity, so that it can be ensured that the radiator can dissipate heat with appropriate air volume under different working conditions, and the situation that a motor is overheated or overcooled is effectively avoided.