2575 results about "Drill" patented technology

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 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 invention discloses a half coal rock digging and anchoring all-in-one machine, and relates to the technical field of mining devices, the half coal rock digging and anchoring all-in-one machine comprises a pair of rear drill arm parts arranged on a machine body part, and each rear drill arm part comprises a swing oil cylinder III and a rear onboard jumbolter; a recoil force grading detection mechanism is arranged between the swing oil cylinder III and the rear onboard jumbolter; the recoil force grading detection mechanism comprises a recoil force sensor, a first microswitch, a buffer mechanism and a connecting mechanism. By arranging the recoil force grading detection mechanism, recoil force is transmitted to the mounting plate during working, the mounting plate drives the swing oil cylinder plate to act through the connecting mechanism, the connecting plate of the buffer mechanism triggers a first microswitch firstly and then abuts against a recoil force sensor, and grading detection of the recoil force is achieved; the mechanism solves the problem that the angle deflection of the rear onboard jumbolter is caused by the recoil force but is lack of effective grading detection, avoids the risk of compensation failure caused by the fault of a single detection element, and improves the detection reliability of the recoil force.

The application provides a tunnel blasting scheme intelligent design method, and relates to the technical field of tunnel engineering. The application obtains blasting design parameters based on a tunnel engineering geological exploration report and a forepoling geological prediction; obtains a drill-and-blast method tunnel blasting scheme 01 based on the blasting design parameters (4) by using a tunnel engineering blasting theory and a computer deep learning technology; establishes an existing drill-and-blast method tunnel blasting scheme sample library of built or under-construction tunnels based on the blasting design parameters (10) by using the computer deep learning technology, and obtains a to-be-built drill-and-blast method tunnel blasting scheme 02 by inputting the blasting design parameters and tunnel engineering requirements; and obtains a final drill-and-blast method tunnel blasting scheme according to the economic, efficient, safe and simple principle by using an artificial selection method based on the obtained drill-and-blast method tunnel blasting scheme group. The method avoids the influence of subjective factors, combines a traditional experience design method, big data processing and artificial intelligence technology, and provides an efficient scheme for design and construction personnel.

The invention discloses a reamer electromechanical driving mechanism and method capable of detecting the position state of a blade, and relates to the technical field of tools of petroleum drilling engineering, the reamer electromechanical driving mechanism comprises a power assembly, a lead screw assembly, an ejector rod, a locking assembly, a rotation detector and a displacement detector which are mounted in a drill collar; the power assembly is connected with the lead screw assembly, the lead screw assembly is connected with the ejector rod, the ejector rod is connected with the reamer blade, the power assembly rotates and drives the ejector rod to move up and down through the lead screw assembly, and the ejector rod moves up and down to drive the reamer blade to be unfolded or folded. The locking assembly is assembled on the ejector rod, and after the reamer blade is unfolded in place, mechanical self-locking is conducted on the ejector rod. The rotation detector is assembled beside the lead screw assembly to detect rotation of the lead screw assembly, and the displacement detector is assembled beside the ejector rod to detect up-and-down movement of the ejector rod. The opening and closing state of the cutter wing is measured and uploaded through the rotating detector and the displacement detector, the cutter wing is expanded in place, the underground condition can be judged easily, and controllable multiple reaming is achieved.

The application relates to the technical field of well drilling, and is a motor control type variable-diameter stabilizer, which comprises a variable-diameter mechanism, a pressure driving mechanism, a non-magnetic drill collar, a control outer shell and a variable-diameter joint which are sequentially and threadedly connected together from top to bottom, the variable-diameter mechanism comprises a righting block which is slidingly installed in an installation sliding groove, the variable-diameter joint is provided with a limiting ring, a reset spring is arranged between the installation sliding block and the limiting ring, the variable-diameter joint is provided with a plurality of sinking grooves, a piston is arranged in each sinking groove, the variable-diameter joint is provided with a liquid storage channel, a communication hole which is in communication with the liquid storage channel is arranged on the inner side wall of each sinking groove, the control outer shell is internally provided with the pressure driving mechanism, the non-magnetic drill collar is internally provided with a control system, and the pressure driving mechanism is electrically connected with the control system. The application has the advantages of reasonable and compact structure, convenient use, safety, labor saving and high efficiency, and the righting block is controlled by forming a pressure difference at the variable-diameter joint and extending.

Computer implemented methods and systems for testing one or more operational changes in a drill rig includes initiating the one or more operational changes and using, in part, image data of a mechanical mud separation machines (“MMSM”) to detect the impact of the one or more changes. The image data may be processed by a Deep Neural Network to identify objects in the object flow, operational parameters of the MMSM, and wellbore environmental conditions. Additional image data may be selected for additional processing based on the results of the analysis. The results of the test may be used to update the drilling operation or a drilling model.

The invention relates to the technical field of tunnel engineering disease treatment, in particular to a construction method of a drainage system for karst tunnel inverted arch upheaval disease treatment, which comprises the following construction steps: S1, arranging settlement monitoring points in a disease section tunnel, and arranging a reinforcing structure in a lining arch foot area; and S2, the existing disease inverted arch is broken and removed section by section according to the preset length, and temporary supporting is carried out in time. And S3, an overhaul window is dug in the lining through a water mill drill, and a supporting structure is synchronously installed. And S4, a foundation trench is excavated in the bottom of the inverted arch, a concrete strip-shaped foundation is poured to serve as a foundation of the steel corrugated pipe arch culvert, the steel corrugated pipe arch culvert is installed, the axis of the steel corrugated pipe arch culvert is consistent with the karst cave water flow direction, and the steel corrugated pipe arch culvert is in sealed butt joint with the confluence overhaul groove. And S5, a drainage pipe is pre-buried in the inverted arch reconstruction section, the confluence overhaul groove and the central drainage ditch are connected, and finally concrete is poured to seal the inverted arch structure. The method effectively solves the problem of upheaval of the inverted arch caused by water burst of the deeply-buried karst cave, reduces the damage of the lining structure, and improves the long-term stability of the tunnel.

The invention discloses a multifunctional all-in-one unit for drilling and blasting method construction and a construction technology, and relates to the technical field of tunnel construction, the multifunctional all-in-one unit comprises a rack assembly, a left drilling arch arm frame, a left drilling arm frame, a vertical arch arm frame, a right drilling arm frame, a right drilling arch arm frame, a guniting arm frame, a pumping system, a hydraulic system and an electrical system; a vertical arch module of the left drilling arch arm frame, a vertical arch module of the vertical arch arm frame and a vertical arch of the right drilling arch arm frame snatch a left arch frame, a middle arch frame and a right arch frame to carry out arch erecting and mesh welding operation; a charging hanging basket is arranged at the front end of the rack assembly; the rock drilling modules of the left drilling arch arm frame and the right drilling arch arm frame work independently or cooperatively in cooperation with the left drilling arm frame and the right drilling arm frame and are used for drilling anchor rod holes and blast holes. According to the invention, multiple functions such as drilling of blast holes, charging of a hanging basket, blasting, erecting of meshes, anchor rod operation, guniting and the like can be integrated, parallel working procedures or seamless connection of the working procedures can be realized, and the construction progress can be greatly improved.

The invention relates to the technical field of intelligent manufacturing equipment, in particular to a turning machine tool and a turning method of a hydraulic motor output shaft. The turning machine tool comprises a rack, a drill chuck assembly used for clamping and fixing a workpiece is rotationally installed on the rack, and the drill chuck assembly is driven by a driving device arranged on the rack to rotate; a tailstock is fixed to the machine frame, and an ejector pin which can linearly move, can rotate and is used for abutting against and limiting the end of a workpiece is installed on the tailstock. A tool rest bottom plate capable of linearly moving in the axial direction of a workpiece is arranged on the rack, a rotary cutter head is arranged above the tool rest bottom plate, and a tool turret is arranged above the rotary cutter head; a plurality of turning tools with the machining precision gradually increased are sequentially and fixedly clamped on the tool turret in the circumferential direction at equal angles. The turning method is efficient, precise and high in automation degree. And the bottleneck problems of low efficiency, poor precision stability, dependence on skilled workers and the like of multi-precision shaft parts such as output shafts of hydraulic motors in the traditional turning process are effectively solved.

The invention relates to a virtual simulation emergency drilling method and system under a mine fire dynamic catastrophe condition based on deep reinforcement learning, and belongs to the field of mine safety management. According to the method, a mine comprehensive database is constructed, environment, equipment, fire source and ventilation system data of a mine are collected, a mine structure model is generated by using a three-dimensional modeling technology, and a mine fire spreading process is simulated in real time through fire dynamics simulation, deep reinforcement learning optimization and a virtual reality technology. The drill personnel enter the fire disaster simulation environment through the virtual reality equipment to carry out emergency operation, and the system carries out real-time feedback according to the operation of the drill personnel and optimizes the fire disaster spreading simulation model. Parameters such as wind speed and wind quantity of the ventilation system and fire spreading are subjected to coupling calculation, so that the accuracy and dynamic response of fire simulation are ensured. According to the system, through cooperative work of a plurality of modules, intelligence, individuation and high efficiency of mine fire emergency drilling are realized, and the emergency response capability of drilling personnel is effectively improved.

The utility model discloses a rhinestone sorting device which comprises a horizontal linear module, a vertical linear module, a vertical linear module, a plurality of vertical linear modules and a plurality of vertical linear modules, wherein a connecting plate is arranged at the bottom of a sliding block of the horizontal linear module; the plurality of vacuum rocking drilling machines are positioned below the horizontal linear module and are arranged along the length direction of the horizontal linear module; the detection mechanism is connected with the sliding block of the horizontal linear module through the connecting plate and is used for shooting and detecting the rhinestone; the sorting mechanism is connected with the sliding block of the horizontal linear module through the connecting plate and is used for sorting rhinestones; according to the utility model, the horizontal linear module is arranged above the vacuum rocking drilling machine, and the horizontal linear module drives the detection mechanism and the sorting mechanism to pass above the vacuum rocking drilling machine, so that the rhinestones are detected and sorted, manual participation is not needed, the labor cost is effectively saved, and the sorting efficiency is improved.

The invention discloses a self-adaptive control method and system for a mining drilling machine. The method comprises the steps that state parameter data in the drilling process of the drilling machine are collected in real time through a multi-source sensor; quickly matching the acquired data with a pre-constructed dynamic database, generating an initial control parameter, and inputting the initial control parameter into an optimization model to generate a self-adaptive control strategy; performing closed-loop control on a drilling machine executing mechanism according to the self-adaptive control strategy; and monitoring and evaluating the drilling performance index of the drilling machine in real time, and feeding back an evaluation result to the optimization model to realize online iterative optimization. Through three technical means of dynamic database construction, layered double closed-loop control and multi-parameter coupling optimization, adaptive sensing, intelligent decision making and accurate execution of the drilling machine under complex geological conditions are realized, the drilling efficiency is remarkably improved, the energy consumption is reduced, the operation safety is enhanced, and the engineering application value is extremely high.

The utility model provides an induced tooth machining, clamping and positioning tool which is characterized in that when induced tooth machining is carried out, a four-jaw chuck of a lathe is used for firmly clamping and aligning a flange plate, the bottom surface of an induced tooth product subjected to a cutting process is flatly placed on a base plate, and two circular arc parts of the induced tooth product abut against two positioning pins; a compression nut at the upper end of the pressing plate is screwed down, and the induced tooth product is limited to move in the radial direction of the tool; the adjusting tip is adjusted to be capable of abutting against the tail end of the induced tooth product, and the induced tooth product is limited to move in the axial direction of the tool; during machining, a hard alloy down-the-hole drill is selected, a threaded bottom hole and a chamfer are machined on an induced tooth product, an internal thread turning tool is used for machining internal threads, and cooling liquid is used for cooling and lubricating the tool and the induced tooth product in the whole machining process. The three-time clamping mode of a drill jig is replaced by one-time clamping, and three working procedures of thread bottom hole machining, chamfering and thread machining are completed through one-time clamping turning.

The invention relates to the field of road repair, in particular to a hydraulic forcible entry device and a using method. According to the hydraulic forcible entry device, when the inspection well cover needs to be forcible entry, well cover cutting equipment and milling equipment are used for cutting and milling the periphery of the inspection well cover, so that only the bottom of the inspection well cover is connected with a shaft through a well ring; the whole hydraulic forcible entry device is lowered till the drill rod reaches the connecting face of the well ring and the shaft, and the oil cylinder keeps retracting in the lowering process; the oil cylinder extends out, the guide rod is driven to slide along the guide sleeve so as to drive the drill rod to extend outwards through the connecting rod, and an impact head slope at the outer end of the drill rod lifts the walling crib upwards so that the walling crib can be separated from the shaft; after separation, the inspection well cover and the well ring can be lifted away from the whole hydraulic forcible entry device. According to the hydraulic forcible entry device, manual forcible entry work after operation of a cutting machine is omitted, the labor intensity is reduced, the labor amount is reduced, the operation efficiency is improved, and the number of constructors needed for forcible entry is reduced.

The application discloses a drilling tool with concave-convex matching on the side, which comprises a cutting part and a clamping part. The cutting part comprises an end cutting area, a bottom locating surface and a cutting side surface between the end cutting area and the bottom locating surface. The cutting side surface is provided with a plurality of side cutting areas and a plurality of side locating surfaces. The end cutting area and the side cutting area form a cutting area of the cutting part. The side locating surface is provided with an inner mounting hole. The clamping part comprises a clamping groove part and a handle part. The clamping groove part is provided with a bottom clamping surface and a side clamping surface corresponding to the bottom locating surface and the side locating surface respectively. At least one side locating surface is provided with a side locating convex part. The side clamping surface corresponding to the side locating surface is provided with a side clamping concave part. The side locating convex part and the side clamping concave part form a concave-convex matching to determine the mounting direction of the cutting part and realize the circumferential clamping and positioning of the cutting part, so as to transmit the cutting torque and the cutting force between the cutting part and the clamping part in the cutting process. The cutting tool has high rigidity, excellent anti-vibration performance, high positioning accuracy and long service life.

The invention provides a drilling and blasting method tunnel section contour and blast hole position automatic design method, and relates to the technical field of tunnel engineering, and the method comprises the following steps: S1, determining the type of a tunnel section contour; s2, performing parameterized representation and automatically drawing a contour line based on the tunnel section contour type; s3, based on the drawn tunnel section contour, conducting parameterized arrangement of cut holes, peripheral holes, bottom plate holes and auxiliary holes, and generating coordinates of various blast holes; automatically designing blast hole positions through different types of tunnel section contours; and the arrangement of the blast holes is converted into the generation of coordinate points, so that the requirements of intelligent mechanical equipment for tunnel excavation in the drilling and blasting method on the coordinates of the blast holes are met, and finally, the intelligent and refined blast hole arrangement of a tunnel excavation site in the drilling and blasting method is realized. The problems that in the contour drawing and blast hole arrangement link, manual lofting is often low in efficiency and large in error are solved, and it is avoided that the excavation section deviates from the design, the over-excavation or under-excavation phenomenon occurs, and the construction quality is affected.

The invention discloses an intelligent operation method and system for a double-arm drill jumbo of a large-section tunnel, and relates to the field of tunnel construction, the geometry, integrity, dust and humidity data of a section are collected in real time through a laser radar, an IMU and a surrounding rock pressure and environment sensor, and an operation environment database is constructed and updated; by combining the strength grade of the surrounding rock and the distribution of the soft layer, the posture of the arm support, the chiseling frequency and pressure and the rock entering angle of the bucket teeth are adjusted online in a self-adaptive mode; switching among a high-frequency impact mode, a bucket tooth wedging prying mode and a free face gravity automatic rock breaking mode according to working conditions; excessive impact is restrained and protection is triggered through a vibration monitoring closed loop, efficiency is improved, energy consumption is reduced, secondary damage is reduced, and construction safety and quality are guaranteed.

The utility model provides a coal bunker cleaning device and a coal bunker cleaning head, the coal bunker cleaning device comprises a multi-stage hydraulic telescopic cylinder and a foldable mechanical hydraulic arm, through the control of the hydraulic telescopic cylinder and the foldable mechanical hydraulic arm, the coal bunker can be automatically cleaned, the burden of workers is reduced, in addition, the utility model further provides the coal bunker cleaning head, and the coal bunker cleaning head is convenient to use. Through cooperation of the expansion hammer, the vibration core teeth and the pioneer drill, the bunker wall is cleaned in a first-stage drilling, second-stage vibration and third-stage expansion mode, and efficient and thorough cleaning work of the coal bunker is completed.

The invention discloses a drilling and blasting method tunnel automatic charging robot which comprises a plurality of sets of charging devices, each set of charging device comprises a rubber pipe pushing charging system and a pneumatic conveying charging system which are connected, each rubber pipe pushing charging system comprises a system base, a stock bin mechanism and a cartridge pushing mechanism, and each stock bin mechanism comprises a cartridge storage bin and a charging pipe; the cartridge storage bin is arranged on the sliding bracket and is in sliding connection with the system base; the cartridge storage bin is a cylindrical shell; a round hole in the front end of the charging pipe is connected with the charging pipe; the cartridge pushing mechanism comprises a pushing rubber pipe, the front end of the pushing rubber pipe is used for penetrating into the cartridge storage bin through the round hole, and the cartridge to be loaded into the peripheral hole and the first section of cartridge to be loaded into other holes are pushed to the charging pipe; and the pneumatic conveying charging system is used for blowing the non-first-section cartridge to be charged into the blast hole into the blast hole. The drilling and blasting method tunnel automatic charging robot automatically charges, reduces the number of charging operators at a tunnel face, and ensures that the operators do not directly contact with cartridges.

1. The name of the design product: hand-held drill aspirator. 2. The use of the design product: for a hand-held drill aspirator. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention relates to the technical field of tunnel construction automation, and discloses a drilling and blasting method tunnel machine group cooperation large machine intelligent scheduling system comprising the following steps: an Internet of Things sensing unit used for obtaining an equipment individual state; the macroscopic scene visual perception subsystem is used for identifying a macroscopic scene event; the state data management module is used for calculating a dynamic influence factor which can be attenuated along with time and can be adjusted for the state and the event; the decision potential field construction module is used for generating a space decision potential field model containing attraction potential and repulsion potential according to the dynamic influence factors; and the scheduling instruction generation module is used for planning a path based on the potential field model and generating an instruction. According to the method, the unified decision potential field adjusted by the dynamic influence factors is constructed, the scheduling problem is converted into the path planning problem, and unified and efficient scheduling of conventional processes and emergencies is achieved.

A kind of 7 type shield support under horizontal non-blasting mining method, belong to the technical field of ore body mining, it includes the following steps, S1, in the vein along the upper section in the tunnel, install 7 type shield support, 7 type shield support is from east side along the vein up mountain, start through joist series connection arrangement to west side along the vein up mountain;S2, after installation and arrangement are completed, from the middle position of along the vein to both ends, using rock drill to carry out retreating type slope rock drilling, according to the angle of 15 ° to both sides mining, mining to vertical height drops 1m, then, horizontal retreating type rock drilling 1m, during, shovel truck follows and carries out in and out slag operation, transports ore to ramp, then, through ore chute connecting channel, transports to ore chute, unloads to ore chute, until rock drilling to end only remaining body length about 4m, will rock drill in stope connecting channel, turns around, will end remaining 4m advancing type rock drilling.The present application simplifies the recovery process, can effectively improve the production efficiency of ore block, and lower the cost of ton ore.

An example device that may be mounted to a tool may include a clamping mechanism that allows the device to be put onto a tool and removed from the tool. The device may affix pieces and accessories by using an accessory fastening mechanism, such as one or more magnets. This device may include various features on a permanent or temporary basis. Such features may include lights, speakers, levels, or other features. In an example, the device may be used with a handheld tool, such as a power drill or other tool.

The invention discloses a waterproof curtain construction method applied to an upper-soft lower-hard stratum. Comprising the following steps that firstly, a stratum interface is sequentially divided into a soft soil layer, a soft and hard boundary layer and a hard rock layer from top to bottom; a milling cutter module is adopted for operation in the soft soil layer; operation is carried out after a high-frequency vibration mode is carried out on the cutting and milling cutter module on the soft and hard boundary layer; the cutting and milling cutter module is switched to the hobbing cutter module for operation in the hard rock stratum; a'soft soil-junction-hard rock 'three-layer dynamic matching system is established, and single-drilling-tool multi-depth continuous operation is achieved; the drilling efficiency of the soft and hard boundary layer is improved in a high-frequency vibration mode; wherein a primary risk automatic filtering mechanism reduces most of invalid shutdown.

The utility model discloses a machining device for a guide fillet of a sealing structure, which comprises a grinding head, abrasive paper and a positioning shaft, and the grinding head is provided with a positioning cylinder and a rotary grinding surface which is formed by taking an inner concave arc R as a contour edge and taking the axis of the grinding head as a rotating shaft. Before a guide fillet is machined, abrasive paper is marked along the contour of a cutting sample plate and cut, then the abrasive paper is pasted to a grinding head through glue, a positioning shaft is inserted into a pipe joint, the grinding head is clamped through a handheld electric drill, a positioning cylinder is inserted into a positioning round hole of the positioning shaft, and the grinding head is pressed to a to-be-machined position for grinding; and finally, metallographic abrasive paper is used for polishing the ground round corner, and alcohol is used for cleaning the ground round corner. By adopting the guide fillet processing device, the problems of difficult repair and low repair qualification rate caused by missing processing of the guide fillet can be solved.

The utility model discloses an impact block and rotor pressing device for electric hand drill production, which comprises a bearing, the two supporting columns are fixedly arranged at the top of the workbench in a bilateral symmetry mode, the transverse plate is fixedly arranged between the tops of the two supporting columns, and the four vertical rods are fixedly arranged at the top of the workbench in a front-back symmetry mode and located on the outer side of the transverse plate. The transverse plate is arranged on the top of the workbench, the sliding pushing assembly is arranged on the top of the workbench in a sliding mode and located on the lower side of the transverse plate, the placing plate is arranged on the sliding pushing assembly and located on the upper side of the transverse plate, the positioning inserting cylinder is fixedly arranged on the top of the transverse plate and located on the right side of the placing plate, and an impact block body can be placed on the placing plate. And a rotor body can be inserted into the positioning insertion hole.

The invention relates to the field of foundation detection, in particular to an impact-controllable foundation strength detection device and method for building construction, and the device comprises a steel chisel main body, an annular transmission block, a piercing hammer and a coaxial release mechanism; the coaxial releasing mechanism comprises a coaxial connecting ring, a plurality of force applying structures and a buffering assembly, the coaxial connecting ring is coaxially connected with the steel chisel body, a plurality of lifting lugs are arranged on the coaxial connecting ring at equal intervals, the force applying structures are arranged on the lifting lugs correspondingly, the force applying structures are used for applying radial acting force to the piercing hammer, and the buffering assembly is used for buffering the piercing hammer. The acting force applied to the piercing hammer by the force application structures is the same in magnitude, and the buffer assembly is connected with the coaxial connecting ring and the steel chisel body and used for reducing vibration borne by the coaxial connecting ring. The steel chisel is provided with the steel chisel body, the piercing hammer and the coaxial release mechanism, so that energy loss caused by eccentricity or contact friction of the piercing hammer is avoided, and the impact amount of the piercing hammer is precisely controllable.

The utility model relates to the technical field of coal mine tunnel supporting, in particular to a turnover type sliding anchor drilling platform which comprises a lower layer fixing platform assembly and an upper layer sliding platform assembly. The upper-layer sliding platform assembly comprises a left anchor drill platform and a right anchor drill platform. The left anchor drilling platform and the right anchor drilling platform are each provided with two sets of top anchor devices and one set of side anchor devices. Small-angle adjustment of the upper-layer top anchor device in the front-back direction and the left-right direction is achieved, meanwhile, the upper-layer top anchor device can rotate forwards by 90 degrees to achieve large-angle adjustment, and the top anchor device is located in a top-free area at the upper end of the cutting part. The upper-layer side anchor device supports the side wall and can adapt to different row pitch construction, the anchor rod supporting construction range and angle are guaranteed, and multi-degree-of-freedom, multi-angle and wide-range flexible and efficient supporting operation suitable for low roadways and small empty top distance complex geological conditions is achieved.

The utility model relates to the technical field of gift bag processing, in particular to a gift bag punching and stringing device which comprises a processing table and a lead screw frame, a driving motor is arranged at one end of the lead screw frame, a stringing frame is fixedly connected to the back of the processing table, a first punching frame is arranged on one side of the surface of the processing table, and a second punching frame is arranged on the other side of the surface of the processing table. A second punching frame is arranged on the other side of the surface of the machining table, and electric push rods are arranged at the top ends of the first punching frame and the second punching frame. According to the gift bag punching device, through the arrangement of the machining table, the lead screw frame, the driving motor, the first punching frame, the second punching frame, the electric push rod, a punching groove, a punching drill bit, a first reciprocating lead screw, a second reciprocating lead screw and a lead screw sliding base, the gift bag punching device can conduct more efficient adaptive punching machining operation on gift bags; a worker firstly starts a driving motor at one end of a lead screw frame, so that the driving motor drives a first reciprocating lead screw and a second reciprocating lead screw at one end to integrally rotate and adjust.