4879 results about "Drill" patented technology

The present invention relates to the technical field of tunnel rockburst microseismic monitoring, and provides a strain-structural plane slip-type rockburst failure mechanism analysis method for a drill-and-blast method tunnel. The present invention collects strain-structural plane slip-type rockburst microseismic data during tunnel construction; in light of engineering geological survey data, performs microseismic monitoring and data analysis on strain-structural plane slip-type rockburst that has occurred in a tunnel, divides a strain-structural plane slip-type rockburst risk area, and determines a microseismic rockburst early warning area; and, by means of these data, deeply understands a microseismic activity law of strain-structural plane slip-type rockburst of deep-buried drill-and-blast method tunnels, discriminates respective functions of tensioning and shearing in rock failure processes, comprehensively analyzes the failure mechanism of strain-structural plane slip-type rockburst, and further obtains the failure mechanism of strain-structural plane slip-type rockburst of the deep-buried drill-and-blast method tunnels, providing an important theoretical basis for predicting and preventing rockburst disasters.

The invention provides a multi-parameter fusion drilling tool state intelligent diagnosis method, device and equipment, and the method comprises the steps: determining a stable working period through obtaining basic operation parameters of a drilling tool, and applying specific frequency excitation vibration to the drilling tool in the stable period to form an active propagation wave; a multi-point monitoring technology is adopted to obtain a response vibration signal and extract a time sequence, and a time sequence offset is obtained through differential processing; identifying a signal propagation delay section based on the time sequence offset, extracting actual propagation time, comparing the actual propagation time with standard propagation time to generate a time delay abnormal value, and determining an internal state change position; a high-damage section is determined by combining energy dissipation analysis, and fault positioning information is generated through spatial superposition; performing frequency sensitivity analysis by utilizing the damage characteristic parameters, capturing a resonance response peak value through frequency sweep excitation, and forming a secondary diagnosis result in combination with the wear severity; and finally, determining a fault development rate, generating a partition maintenance instruction, and completing intelligent diagnosis of the drilling tool state.

The invention discloses a drilling and blasting method tunnel construction safety risk evolution analysis method based on a knowledge graph, and the method comprises the steps: obtaining and preprocessing the text data of a drilling and blasting method tunnel construction accident case, and obtaining a safety risk corpus; a mixed deep learning model is constructed, the safety risk corpus is trained through the mixed deep learning model, and the risk factors and the incidence relation of drilling and blasting method tunnel safety are obtained; constructing a drilling and blasting method tunnel construction safety risk coupling evolution analysis knowledge graph based on the risk factors and the incidence relation, and obtaining a key accident chain and a key edge in combination with a knowledge query and path reasoning algorithm; and quantitatively evaluating independent values and coupling effect intensity of the risk factors by using an interaction matrix algorithm, calculating comprehensive importance scores of the risk factors, and determining key risk points according to the comprehensive importance scores of the risk factors. The problems that in a traditional method, attention to the risk factor coupling effect is insufficient, and accident case data are not fully utilized are effectively solved.

The invention discloses a temperature field simulation-based auger bit subsection heat treatment process optimization method and system. The method comprises the steps of constructing an auger bit three-dimensional temperature field simulation model based on auger bit attributes; gradient temperature distribution characteristics are obtained, and the auger bit is divided into a head strengthening section, a transition uniform temperature section and a tail slow cooling section in the axial direction; based on historical heat treatment data, calculating a temperature-stress evolution curve of each segment through transient thermal-structure coupling analysis, and constructing an ideal temperature change model of the auger bit; performing heat treatment processing on each section of the auger bit; based on the stress data of each segment of the auger bit, the error between the stress data and the temperature-stress evolution curve of each segment is calculated and fed back to the control system; and dynamically adjusting induction heating parameters, and performing closed-loop control on the temperature of each section. The method has the advantages that through axial multi-section partition temperature control, dynamic feedback adjustment and simulation model prediction, accurate matching of the temperature-stress field in the heat treatment process of the auger bit is achieved, and the bottleneck of obdurability imbalance of a traditional process is broken through.

The invention discloses a feeding manipulator for petroleum drill rod joint production, and belongs to the technical field of feeding manipulators, the feeding manipulator comprises a mechanical operation arm, two mechanical operation claws are arranged at the free end of the mechanical operation arm, and each mechanical operation claw comprises two clamping claw pieces symmetrically arranged on an output shaft of the mechanical operation arm; a stabilizing assembly with a stabilizing part is arranged in the clamping jaw part, the stabilizing part comprises a main air bag which is arranged in the clamping jaw part and used for improving uniform clamping pressure, an air pump is arranged at the top end of the clamping jaw part, and an inflation part is installed between the output end of the air pump and the main air bag in a communicating mode. The main air bag is arranged in the clamping jaw piece, the internal main air bag can be inflated and expanded to fill gaps between the clamping plates and workpieces, the clamping jaw piece can adapt to the workpieces of different shapes and sizes, the elastic material can absorb clamping impact force, the rigid clamping plates are prevented from making direct contact with the surfaces of the workpieces, pressure is evenly distributed after inflation, local stress concentration is prevented, and the clamping jaw piece can be used for clamping workpieces of different shapes and sizes. And the clamping stability is improved.

The invention relates to the technical field of optimization control, in particular to an automatic bit feeding optimization control system which comprises a bit pressure frequency extraction module, an amplification trend recognition module, a linkage signal monitoring module, a slippage reaction judgment module and a bit feeding speed adjustment module. According to the method, a frequency set is constructed through extreme value extraction, time span and amplitude difference are combined, a bit pressure fluctuation sequence is formed, resolution of dynamic characteristics is enhanced, trend sections are screened through frequency change cumulants, quantitative recognition of fluctuation trends is achieved, well bottom tracks and torque fluctuation signals are introduced, and a period direction consistency comparison mechanism is established. The signal coupling judgment precision is improved, slip judgment logic is constructed according to the amplitude growth rate and the direction consistency, risk grade classification is completed through a strain energy density index, and multi-dimensional signal linkage recognition, trend quantitative grading and energy index evaluation are achieved; and the risk identification accuracy, the response sensitivity and the control instruction adaptability under the complex drilling working condition are remarkably improved.

The utility model discloses a highway base layer compactness detection sampling device, which relates to the field of road construction and comprises a drill cylinder, a first cavity and a second cavity are arranged in the cylinder wall of the drill cylinder, a sleeve is sleeved on the top of the drill cylinder in a sliding manner, the cylinder wall of the sleeve is positioned in the first cavity, and a plurality of elastic steel sheets which are circumferentially distributed at equal intervals are fixedly connected to the bottom of the sleeve. The elastic steel sheet extends into the second cavity, a push-pull mechanism used for driving the sleeve to move relative to the drilling barrel is arranged on the bearing plate, and a squeezing and pushing mechanism used for pushing out a sample in the drilling barrel is installed on the push-pull mechanism. After the drilling barrel completes soil drilling and sampling, the push-pull mechanism drives the sleeve to move downwards, the sleeve drives the elastic steel sheets to move downwards, and the elastic steel sheets are extruded and bent and then seal the bottom end of the drilling barrel, so that a sample is prevented from falling off in the upward moving process of the drilling barrel, and the integrity of the sample is ensured; the sample in the drill cylinder is pushed out through the extruding and pushing mechanism, the drill cylinder does not need to be opened manually, operation is more convenient, and the possibility that the sample is broken is reduced.

Disclosed is a system and method for operating an assembly, such as a powered drill assembly. The assembly may be operated to provide feedback to the user regarding a selected position and / or condition of the powered drill system. The powered drill system may be used to power or drive a selected tool, such as a resection or grinding tool.

The invention belongs to the technical field of virtual reality, and particularly relates to a multi-person collaborative practical training and emergency drilling system and method based on virtual reality. The invention provides a multi-person collaborative practical training and emergency drilling method based on virtual reality. The method comprises the following steps: constructing a virtual mine space according to a production mine mining engineering plan and a roadway profile map; constructing a digital twinborn body of the mining and transporting equipment; obtaining use mode selection information of the user and real-time state data of the user cooperatively operating the mining and transportation equipment physical model, wherein the mode selection information comprises a training mode and an assessment mode; according to the real-time state data, carrying out on-line updating on digital twinborn body data of the mining and transporting equipment; driving the corresponding mining and transporting equipment virtual three-dimensional model in the virtual mine space to execute a corresponding action, and adjusting the virtual mine space according to the executed action; the machine learning algorithm evaluates the cooperative operation state and the emergency operation state of the mining and transporting equipment. According to the invention, collaborative operation training of mining engineering can be realized.

The invention discloses an oil-electricity hybrid linkage power supply system and a control method for a network electric drill, and belongs to the technical field of oil field network electricity land drilling machine system optimization control. Aiming at the power supply and consumption characteristics of the grid electricity drilling machine, on the basis of the energy flow characteristics of the grid electricity drilling machine system, the power grid side, the diesel generating sets and the grid electricity drilling machine oil-electricity hybrid linkage power supply system are linked, a multi-source coordination control algorithm is adopted, the starting number of the diesel generating sets is selected according to the power consumption capacity gap, and flexible power adjustment is conducted; with the purpose of minimizing the power utilization cost during operation of the grid electricity drilling machine, stable power output of the diesel generating set is balanced, the optimal economic operation mode is achieved, and mutual impact of currents of a power grid side and the diesel generating set is prevented; the problems that an existing single power supply cannot meet the electricity demand of the grid electricity drilling machine, cost is high, and cooperative power supply production efficiency is low are solved.

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 relates to the technical field of intelligent manufacturing, in particular to a method and equipment for determining early warning parameters of a hole drill tool and a storage medium. The method comprises the following steps: determining a target wear stage of a hole drill tool based on a preprocessed vibration signal and an original current signal, and determining a target weight coefficient combination corresponding to the target wear stage; according to the current vibration kurtosis, the current acoustic emission energy, the current temperature difference and corresponding weight coefficients in the target weight coefficient combination, calculating to obtain a current weighted score; according to the current weighted score and the historical weighted score, the change rate of the current weighted score is calculated, and according to the size relation between the change rate of the current weighted score and the constraint change rate, the current remaining life needed by hole drill tool early warning is determined. According to the method, the state of the hole drill tool is monitored in real time by introducing various types of signals, and the differentiated influence of different wear stages on the hole drill tool is considered, so that the accuracy of the predicted residual life of the hole drill tool is ensured, and the prediction accuracy is improved.

The invention discloses a multi-element blasting effect evaluation method and system based on point cloud data, and relates to the field of blasting effect evaluation of a drilling and blasting method.The method comprises the steps that point cloud obtained after tunnel blasting is scanned through a three-dimensional laser scanner, and classification of muck pile point cloud, tunnel face point cloud and hole body point cloud is achieved through a Canupo algorithm; the muck pile point cloud, the tunnel face point cloud and the hole body point cloud are processed, and the boulder rate, the throwing distance, the excavation footage, the blast hole utilization rate, the tunnel half hole and the over-excavation and under-excavation quantity index parameters are obtained; and obtaining a blasting effect evaluation score through the combination weight and the score of each index parameter, and obtaining blasting effect evaluation. According to the method, multiple blasting effect evaluation indexes can be accurately obtained based on the point cloud data obtained through three-dimensional laser scanning, the blasting effect is quantitatively evaluated, a large amount of manpower is saved, the blasting effect evaluation efficiency and accuracy are improved, and reference is provided for improvement of subsequent blasting design.

The utility model belongs to the technical field of agriculture and forestry machinery, and particularly relates to a soil improvement device. Comprising a deep scarification gun, an air inlet pipe and a spray explosion tank, the lower end of the deep scarification gun is in interference fit with a deep scarification head, the deep scarification head is of a conical structure, an airflow channel is formed in the deep scarification gun, a spraying hole is formed in the lower end of the deep scarification gun, an air inlet is formed in the side wall of the upper end of the deep scarification gun, and the airflow channel is communicated with the spraying hole and the air inlet; the air inlet pipe comprises a hose and a metal pipe, one end of the hose is communicated with the metal pipe, the metal pipe is in interference fit with the air inlet, and the other end of the hose is communicated with the air outlet of the spray explosion tank. According to the scheme, through the integrated modeling design of the deep scarification gun, the drill rod, the deep applying rod and the deep applying head are connected instead of threads or bolts, unnecessary connecting structures on parts are reduced, meanwhile, connecting pieces are reduced, the mechanical property of the deep scarification gun is optimized, the durability of the parts is improved, and the service life of the deep scarification gun is remarkably prolonged.

The utility model relates to a detachable vibration feeding disc for micro drill machining, which comprises a material receiving shovel arranged at the top of the vibration feeding disc, a spiral slide way is arranged on one side of the material receiving shovel, the inner side of the spiral slide way is fixedly connected with the vibration feeding disc, a spiral flow limiting rail is fixed on the outer side of one end of the spiral slide way, and the flow limiting rail is fixedly connected with the vibration feeding disc. A spiral collecting box is arranged below the flow limiting rail, a through hole is formed in the vibration feeding disc, and the through hole is located in the bottom of the collecting box. When the device works, materials in a spiral slide way and a flow limiting rail easily fall off in the vibration feeding and conveying process, the falling materials can enter a collecting box, the materials in the collecting box can slide downwards and make contact with one side of a V-shaped baffle, the baffle can be driven to rotate under the action of the gravity of the materials, and therefore the materials can be conveyed into the collecting box. And the falling materials can return to the vibration feeding disc again through the through holes, so that the device can conveniently collect the falling micro drill handle parts in the feeding and conveying process and throw the micro drill handle parts into the vibration feeding disc again.

The utility model relates to the technical field of ship mechanical part machining, in particular to a polishing device for ship mechanical part machining, and solves the problem that in the prior art, ship mechanical parts of different shapes and sizes cannot be conveniently adjusted and fixed, so that the polishing effect is poor. A polishing device for ship mechanical part machining comprises a machining table and a polishing machine, the machining table is provided with a sliding groove, the interior of the sliding groove is slidably connected with a mounting block, the top of the mounting block is provided with a bearing plate through a buffering mechanism, the surface of the bearing plate is fixedly connected with four supporting blocks, and the surfaces of the supporting blocks are in threaded connection with screws; a clamping drill is fixedly connected to the surface of the screw rod, a plurality of limiting grooves are formed in the surface of the bearing plate, and limiting rods are arranged in the limiting grooves in a penetrating mode. According to the polishing fixture, clamping and fixing of parts with different shapes and sizes are guaranteed, so that the parts can be normally polished, and the polishing effect of the parts cannot be affected.

The present invention relates to the technical field of pile hole mechanical equipment, and specifically discloses a pile foundation construction device, comprising a drill tube, a locking mechanism, an upper base plate and a lower base plate, the upper base plate being hinged on the lower end of the drill tube, and the lower base plate being rotatably mounted on the lower end surface of the upper base plate, the upper base plate and the lower base plate being respectively provided with a through hole one and a through hole two for feeding into the drill tube, a plurality of telescopic plates one being arranged in the through hole one along the radial direction of the upper base plate, and the plurality of telescopic plates one gradually increase in length from the inside to the outside, the telescopic plates one being slidably mounted on the upper base plate along the circumferential direction of the upper base plate, an elastic member one being arranged between the telescopic plate one and the upper base plate, when the drill tube is full, the upper base plate is reversed, so that the telescopic plate one blocks the through hole two, and when there is a stone in the through hole one, the telescopic plate one will compress the elastic member one after abutting against the stone; the beneficial effects of the present invention are as follows: the influence of the stone on the drilling tube blocking can be reduced, thereby improving the efficiency of pile foundation construction.

The embodiment of the utility model discloses a deep hole machining combined tool in the technical field of hole machining drilling tools. When a deep hole is machined, the distance between the milling cutter blade and the chamfering cutter blade is adjusted according to the depth of the hole needing to be machined, the position of the chamfering cutter limiting block can be directly adjusted through the arrangement of the scale marks, a measuring tape does not need to be additionally used for measurement, and firstly, the milling cutter blade is fixed to a groove cavity of a first clamping groove through cooperation of a first bolt and a first threaded hole; then a second bolt is matched with a third threaded hole to fix a chamfering blade in a groove cavity of a second clamping groove, then a positioning sliding block is placed in a groove cavity of a first chip removal groove, and after size adjustment is completed, the third bolt is placed in a hole cavity of a first limiting hole and a hole cavity of a second limiting hole, so that the third bolt is screwed into a hole cavity of the second threaded hole; and the position of the positioning sliding block is fixed, so that the chamfer is machined while the deep hole is machined.

A dual-mode landing gear adapter enables rapid interchangeability between manual and powered operation for trailer landing gear extension and retraction. The adapter includes a gear shaft adapter having a first coupling end structured to securely engage the trailer's landing gear gearbox shaft, and an opposite second coupling end with axial slots configured for receiving a two-pin anchor. A manual crank and a drill head attachment each include a corresponding two-pin anchor for secure, selective coupling with the adapter. The drill head attachment further comprises a cylindrical collar structured to securely receive a standard electrically powered drill / driver, secured via a cotter pin or similar fastening device. The invention facilitates quick, secure switching between powered and manual operation without tools, ensuring convenience, safety, and operational flexibility. This adapter system reduces user effort, increases efficiency, and provides robust reliability under varying operational conditions common in commercial trucking and trailer applications.

The invention provides a rotary impact type ultrasonic sampling device for deep rocks, which relates to the technical field of drilling and coring and comprises an anchoring unit, a feeding unit, a rotary unit, an impact unit and a coring unit which are sequentially connected from top to bottom. The device has the beneficial effects that the sampling device is firstly placed in a rock hole, and each anchoring tooth is fixed in the rock hole; then an ultrasonic transducer of the impacting unit and a motor of the rotating unit drive a drilling barrel to rotationally impact the rock, an electromagnet of the feeding unit drives a hydraulic cylinder to push the drilling barrel to drill downwards, the rock core enters the drilling barrel, and after the rock core in the drilling barrel reaches the needed length, the rock core pushes a push plate to move upwards to drive the lower end of a limiting rod to release a sliding block; the sliding block drives the core cutting rope to contract inwards to be in attached contact with a rock core, the core cutting rope cuts off the lower end of the rock core along with rotation of the drilling barrel, and therefore automatic drilling and coring can be achieved, coring operation is completed, the integrity of a rock core sample is guaranteed, and the core cutting device is particularly suitable for coring of deep hard rock.

The invention relates to the technical field of well leakage prevention and treatment, in particular to a mud hanging and filling amount calculation method based on annulus liquid level monitoring, which comprises the following steps: establishing a relation model of leakage rate and liquid level height in the drilling fluid leakage process, predicting the position of a leakage balance point, and calculating the leakage pressure difference of each measuring point; establishing a relation model of the leakage pressure difference and the leakage rate, and determining a leakage dynamic function; calculating the liquid level height required to be compensated for the drill tool deficit of the lifting drill; calculating a liquid level height required for balancing formation high pressure, and determining a safe liquid level height; and calculating the time from the current liquid level height to the safe liquid level height to obtain the slurry hoisting and filling amount. By means of the liquid level monitoring technology, the reasonable slurry hanging and filling amount is calculated, calculation parameters are easy to obtain, the process is simple and convenient, and important technical guarantee is provided for well control safety and well leakage treatment measure optimization.

The rhinestone machining equipment comprises a grinding assembly and a polishing assembly, a top grinding and horizontal pushing assembly and a top polishing and horizontal pushing assembly are arranged at the discharging end of the polishing assembly, the top grinding and horizontal pushing assembly comprises a top grinding wheel, the top grinding wheel is rotationally arranged on a first moving seat, the first moving seat is movably arranged on a second moving seat, and the second moving seat is movably arranged on the polishing assembly. The first moving seat is movably arranged on the base and can move in the axial direction of the top grinding wheel, the second moving seat is movably arranged on the base and can move in the radial direction of the top grinding wheel, the top grinding wheel in the top grinding and flat pushing assembly is replaced with a top polishing wheel, namely the top polishing and flat pushing assembly, and during top grinding and top polishing machining, the first moving seat and the second moving seat continuously move. According to the diamond grinding and polishing device, grinding and polishing of the top face can be conducted immediately after grinding and polishing of the side diamond face of a diamond are completed, the traditional mode that a plastic uptake disc and a grinding and polishing disc are matched to conduct top face grinding is replaced, the structure is simpler, and the production speed is higher.

The utility model discloses a plastic card automatic installation executing mechanism, an installation device and an installation system, and belongs to the technical field of aerated concrete plate production. The actuating mechanism comprises a base and a sliding plate arranged on the base in a sliding manner, wherein the sliding plate is connected with a first chuck and a second chuck; wherein a clamping space for a plastic card to be clamped in is formed between the first clamping head and the second clamping head, and the two clamping heads can be relatively close to or far away from each other and are used for clamping and loosening the plastic card; the sliding plate is connected with a driving source and used for driving the first chuck and the second chuck to move synchronously. According to the utility model, the plastic card can be clamped by utilizing the clamping space formed between the two clamping plates; then the two chucks move synchronously and keep clamping action on the plastic card, and then the plastic card is clamped on the steel chisel through the bayonet on the plastic card, so that automatic assembly between the plastic card and the steel chisel can be completed, and the assembly efficiency and the assembly precision are improved.

The present invention discloses a hydraulic breaker body, specifically related to the field of hydraulic breakers, which includes an upper cylinder body assembly and a through-bolt assembly. The bottom end of the upper cylinder body assembly is provided with a middle cylinder body assembly, and the end of the middle cylinder body assembly away from the upper cylinder body assembly is provided with a lower cylinder body assembly. The upper cylinder body assembly, the middle cylinder body assembly, and the lower cylinder body assembly are detachably connected through the through-bolt assembly. A piston rod is movably installed inside the middle cylinder body assembly. A nitrogen chamber is provided at the bottom end of the upper cylinder body assembly, and the top end of the piston rod is movably sealed at one end of the nitrogen chamber. An oil passage is opened on one side of the middle cylinder body assembly. Through two design methods, the present invention realizes the adjustment of the impact frequency of the steel drill rod of the hydraulic breaker based on the hardness of the object to be acted on, making the hydraulic breaker have ultra-high crushing performance, ultra-low failure rate, ultra-high stability, ultra-high durability, and is more labor-saving, environmentally friendly, resource-saving, and can improve the service life of the product.

The invention relates to the technical field of geological prospecting, in particular to a geological prospecting drilling rig drilling real-time depth measuring system, which comprises a vibration acquisition module, a data processing module and a data processing module, the original vibration signals are divided into 256 time sequence segments, sampling interval values are set, the amplitude value and the phase value of each time sequence segment are calculated, and drilling dynamic characteristics are generated. According to the method, vibration sensors are arranged on the surface of a drilling tool to collect original vibration signals, the signals are segmented to calculate amplitude values and phase values, drilling dynamic characteristics are obtained, difference values of adjacent time sequence segments are calculated and compressed, Fourier transform is carried out to generate frequency spectrum parameters, and the frequency spectrum parameters are projected to Grassmann space to calculate characteristic vectors and characteristic values. And constructing a tangent plane projection function to calculate a geodesic distance to obtain a correction coordinate, and iteratively calculating a depth value based on a Riccati equation. And meanwhile, time sequence segmented compression is adopted, so that data redundancy is reduced, and the utilization efficiency of computing resources is optimized.

The invention provides a high-gas coal roadway rapid tunneling system and method, and the system comprises a spraying and drilling and anchoring integrated support tunneling and anchoring machine, an anchor rod reversed loader, a bridge type reversed loader, a self-moving tail and a gas extraction drill carriage, the spraying and drilling and anchoring integrated supporting digging and anchoring machine comprises a rack, a cutting part, a spraying mechanical arm, a drilling and anchoring integrated drilling arm, a telescopic sliding device, a spraying material box, an anchoring agent material box and digging-following gas monitoring equipment. By spraying and supporting the surface of the roadway, sealing of the surrounding rock surface of the roadway is achieved, the gas concentration increasing speed of the driving working face is slowed down, and meanwhile gas extraction operation in the tunneling process is dynamically carried out by monitoring the gas concentration of the driving working face. The supporting speed can be increased by adopting the drilling and anchoring integrated drilling arm.

The invention relates to the technical field of machining, and particularly discloses a combined cutter which comprises a cutter handle, a center drill and end face milling cutters, the center drill is installed in the center of the cutter handle, and the end face milling cutters are distributed around the center drill and installed in a receding groove. The calibration device comprises a mounting base and a measuring mechanism, the measuring mechanism is provided with a clamping assembly, a positioning assembly and a calibration assembly, the combined tool is positioned and clamped, and calibration is carried out through a center hole standard block, a height conversion plate, a guide mechanism and a calibrator. Meanwhile, an end face calibration cushion block is further arranged and used for determining a scraping and milling plane of the combined cutter. The calibration method comprises the steps that the combined tool is placed in the positioning block and pressed tightly, the center drill makes contact with the center hole standard block to drive the height conversion plate to slide, the calibration instrument is used for measuring the moving distance and adjusting the installation position of the center drill, and the center drill is fixed to complete calibration. The combined tool and the calibration device and method have the advantages of being simple in structure, accurate in calibration, convenient to operate and the like, and are suitable for calibration of combined tools of various models.

The invention discloses a digital twinning-based drilling machine lifting system digitization method, device and equipment and a medium, and relates to the technical field of engineering machinery, and the digital twinning-based drilling machine lifting system digitization method comprises the steps of constructing a digital twinning model of a target drilling machine lifting system; virtual-real mapping of the digital twin model is carried out according to the equipment information data; determining simulation data of the digital twinborn model based on the real-time monitoring data, and simulating the digital twinborn model to quantify the model precision of the digital twinborn model so as to obtain an initial digital twinborn model; and performing joint simulation by using a preset technological process identification model and the initial digital twinborn model, and making corresponding automatic updating strategies for different technological processes so as to perform dynamic updating according to the automatic updating strategies, and performing evaluation verification on the initial digital twinborn model to obtain a target digital twinborn model. Therefore, digital twinborn modeling can be carried out on the drilling machine lifting system so as to realize optimization management on the drilling machine lifting system based on the digital twinborn model.

The application discloses a kind of electric saw drill bone power system mechanical performance parameter semi-automatic measuring device, including installation in the sliding platform I of support table, fixed in the travelling fixture of sliding platform I, array installation on the several mainframes of travelling fixture, to be measured swing saw head and to be measured drill, fixed in portal frame and with the sliding platform II of movement direction vertical of sliding platform I, tension-gap measurement module, rotational speed-shaft runout-torque measurement module and swing angle measurement module are successively and parallel fixed on sliding platform II, and pneumatic system, control module, data acquisition and storage module.The application is installed on travelling fixture by simple artificial feeding and discharging to realize automatic transport, and the automation of tension-gap measurement, rotational speed-shaft runout-torque measurement and swing angle measurement etc. process is realized in combination with sliding platform II, with the advantages of simple structure, accurate measurement and high efficiency, and measurement data can realize storage and traceability.

An intelligent electric drill includes a case which has an MCU control unit, a drive unit, a power unit, and a data unit. The MCU control unit controls the power, speed, and torque of the drive unit. A mechanical speed mode recognition module group is electrically connected to the MCU control unit and includes a speed mode recognition electronic module and a plastic speed mode module within the case. The mechanical speed mode recognition module group determines the switching position of the plastic speed mode module, and the speed mode recognition electronic module inputs the determined signal to the MCU control unit. This allows users to automatically recognize the positions of mechanical speed mode and function mode while driving with the electric drill. Users can drive with accurate and appropriate power, achieving precise output of speed, torque, and workload.