30 results about "Conical tooth" patented technology

The utility model relates to the technical field of mechanical connection and adjustment, in particular to an aluminum profile sliding groove adjusting device which comprises an aluminum profile body, a sliding groove body, a sliding groove strip and a locking device, the sliding groove body is formed in the aluminum profile body, the sliding groove strip is installed in the sliding groove body in a sliding mode, and the locking device is arranged on the sliding groove body. The sliding groove strip and the sliding groove body are connected in a locking mode through the locking device, a user can pull the pulling plate again to overcome the elastic force of the spring, the locking block slides towards the interior of the moving groove, the first conical tooth block and the second conical tooth block are disengaged from each other, and therefore the sliding groove strip is unlocked and can freely slide in the sliding groove body. Through the design of the locking blocks and the conical tooth blocks, accurate control over the position of the sliding groove strip can be achieved, a user is allowed to fix the sliding groove strip to any desired position, a stable locking mechanism is provided for meshing between the conical tooth blocks, it is ensured that the sliding groove strip cannot move easily due to external force, and the reliability of the system is improved.

The utility model relates to the technical field of cold extrusion forming, in particular to a combined type bevel gear cold extrusion tool which comprises an upper bottom plate and a lower bottom plate, the bottom of the upper bottom plate is in bolted connection with an upper fixing plate, and the bottom of the upper fixing plate is in bolted connection with a punch fixing plate. Through the punch fixing plate, the guide column, the punch, the positioning plate, the pin and the positioning block, the upper die and the lower die of the device are matched with the guide grooves of the lower fixing plate and the positioning plate through the guide column, and the guide column is in clearance fit with the guide grooves of the lower fixing plate and the positioning plate, so that the accuracy of the cold extrusion bevel gear can be ensured; according to the split assembly mode, different materials can be selected according to stress conditions of different parts, abrasion and deformation of the tool can be effectively reduced, the service life of the tool can be prolonged, if a certain part of the tool is abraded, the part of the tool can be replaced, and the cost is reduced. Maintenance and replacement are simple, and the replacement cost is low.

The invention relates to the technical field of multi-connecting-rod pressing machines, and discloses a double-track limiting multi-connecting-rod pressing machine which comprises a base, a supporting frame and external control equipment, the supporting frame is fixedly connected to the upper surface of the base, and the double-track limiting multi-connecting-rod pressing machine further comprises a driving mechanism which comprises a top plate fixedly connected to the top end of the supporting frame and a driving assembly arranged in the top plate; according to the stripping mechanism, a linkage groove plate in a driving mechanism is guided through a sliding groove in the bottom end of a limiting plate, meanwhile, radial deviation is limited through the adaptive design of an annular sliding groove and an annular plate, and the radial shaking amount of a downward pressing plate in the vertical downward pressing process is reduced; the lateral force is counteracted through reverse rotation, and a stable structure of multi-connecting-rod transmission and double-rail limiting is formed in cooperation with precise sliding of the sliding block in the second sliding groove, so that the problem that the sliding block is prone to inclining during large-tonnage pressing of the uniform pressing machine is solved, and workpiece deformation or die abrasion caused by unstable pressing is avoided.

The application relates to the field of valves, in particular to a valve seat rotatable ball valve which comprises a valve body, a rotation groove is symmetrically arranged in the valve body, two rotation grooves are symmetrically arranged at the two sides of a valve ball, and a valve seat is arranged in each rotation groove; each valve seat comprises a body, a conical tooth ring is fixedly connected to the end face of each body close to the port of the valve body, a conical tooth is engaged on one side of each conical tooth ring, a rotation shaft is fixedly connected to the upper end face of the conical tooth, the rotation shaft penetrates the valve body outward, and a second hand wheel is fixedly connected to the rotation shaft; compared with the prior art, firstly, in the structure, the rotation of the valve seat can be realized by the engagement of the conical tooth and the conical tooth ring, the structure is simple, the valve seat can be stably executed in the face of a complex medium conveying environment, then in the operation mode, the ball valve does not need to be disassembled and taken down from the pipeline system, the ball valve is closed, and the second hand wheel can be rotated, the operation steps are simple, the influence on the medium conveyed by the pipeline system can be reduced, and the suspension time of the equipment or device connected with the pipeline system can be reduced.

The application relates to the technical field of contrast auxiliary devices, and discloses an eye fundus imaging device positioning auxiliary device which comprises a supporting base, a guide rod is fixedly installed at the top of the supporting base, a rotating shaft three is driven to rotate through a rotating knob, the rotating shaft three drives an umbrella-shaped tooth two to mesh with a conical tooth two to rotate, the rotating shaft two, the conical tooth one and the umbrella-shaped tooth one are matched with synchronous transmission, power is transmitted to a rotating shaft one, a convex connecting pin is lapped through electromagnetic coil magnetization iron core adsorption, then the double worm gears synchronously mesh with the worm wheel to drive the transmission screw rod, so that the different patient height adaptation requirements are realized, secondly, the rotating knob is matched with another group of electromagnetic coil magnetization iron core adsorption convex connecting pin lapping, the fixed shaft and the gear are driven to rotate, the gear meshes with the rack to drive the inclined block two to slide, the arc-shaped supporting plate is pushed to adjust the posture, then the eye fundus imaging eye position is matched, so that the cumbersome process of multiple operation piece switching is avoided, and the demand of multiple eye position examination is met.

The present invention discloses an anti-vortex PDC drill bit for dolomite formations, which belongs to the technical field of oil exploration drilling bits. It includes a main body and a plurality of auxiliary blades and main blades connected to the main body, and a plurality of nozzles are provided between the auxiliary blades and the main blades. It is characterized in that the outer side of the shoulder and the gauge portion of the auxiliary blades and the main blades are provided with a plurality of conical teeth, and the other cutting parts of the auxiliary blades and the main blades are provided with a plurality of multi-edge teeth; in the direction of travel of the drill bit, the tooth arrangement height of the conical teeth is higher than that of the adjacent multi-edge teeth. Based on the lithologic characteristics and rock mechanics parameters of the dolomite formation, the present invention adopts a mixed tooth arrangement method of conical teeth and multi-edge teeth. The sum of the force vectors of the cutting teeth is close to zero, and the drill bit runs in a stable state, thereby improving the drill bit's anti-vortex ability and stability.

The utility model provides a sintering material layer ventilation punching device which comprises a round roller and conical teeth evenly arranged on the round roller, the two ends of the round roller are rotationally connected with supports through rotating shafts respectively, and the two supports are fixed to the two sides of a trolley channel in front of a sintering machine head respectively. Tooth holder arrays are evenly arranged in the circumferential direction of the outer wall of the round roller and comprise tooth holders evenly arranged in the length direction of the round roller, and the conical teeth are detachably connected to the tooth holders. According to the utility model, different conical teeth can be replaced according to production requirements without being driven by external force to rotate, so that the efficiency of punching air holes is improved, and the production cost is reduced.

The utility model discloses a fool-proof mechanism for interchanging inserts in a double-sided die, which comprises a die template main body, the sides of the die template main body, which are far away from each other, are provided with insert grooves, one side of the interior of each insert groove is provided with a positioning groove, and the interior of each insert groove is connected with a die insert in a sliding manner. And one side of each mold insert is fixedly connected with a positioning block. Through the arrangement of the sliding rod, the shifting fork, the pawl, the spring, the ratchet wheel and the like, under the elasticity of the spring, the pawl is clamped on the ratchet wheel, then the knob is rotated, the knob drives the first conical tooth to rotate through the rotating shaft, the first conical tooth drives the bidirectional threaded rod to rotate through the second conical tooth, the bidirectional threaded rod drives the ratchet wheel to rotate, and the ratchet wheel pushes the pawl to move. The pawl pushes the sliding rod to move and compresses the spring, when the ratchet wheel rotates to the next clamping tooth, the pawl is clamped into the corresponding clamping tooth under the elasticity of the spring, and the situation that the two-way threaded rod drives the movable plate to loosen due to vibration is avoided.

This invention relates to a tricone drilling assembly having a drilling direction and a rotation direction. The tricone drilling assembly includes at least a set of three rotatable drilling cones. Each drilling cone includes a conical tooth seat and a set of teeth arranged along the conical tooth seat in a plurality of concentric cutting rings. Each cutting ring generally surrounds the conical tooth seat at a specific cone height. Each tooth protrudes outward from the conical tooth seat. The drilling cones generally lack cutting grooves or interlocking areas between adjacent cutting rings. The size and shape of each tooth are configured to suppress interference with teeth on adjacent drilling cones of the set of three drilling cones.

The invention provides a hydraulic scum cleaning grab bucket, and belongs to the technical field of cleaning grab buckets. The rotating groove is formed in the side end of the bucket rod, a rotating disc is rotationally connected between the circumferential inner walls of the rotating groove, the side end of the rotating disc is fixedly connected with a rotating block, the upper side of the rotating disc is fixedly connected with a fixed arc-shaped tooth rake, and the lower side of the rotating disc is fixedly connected with a conical tooth rake; the hollow clamping blocks are inserted between the inner walls of the clamping grooves, then the positions of the conical tooth rakes and the fixed arc-shaped tooth rakes are turned by 180 degrees, turning of the conical tooth rakes and the fixed arc-shaped tooth rakes is achieved, then the hydraulic type scum cleaning grab bucket can clamp different soft and hard scum in a targeted mode, and the hydraulic type scum cleaning grab bucket adapts to cleaning work of various scum at a hydraulic power plant gate. The bucket teeth are quickly turned, so that different soft and hard dross in a hydraulic power plant can be simultaneously fished by the grab bucket, and the efficiency of fishing the dross in the hydraulic power plant by the grab bucket is improved.

The invention relates to the technical field of gear positioning body design and modeling, and discloses a gear positioning body design and modeling method and device, and the method comprises the steps: obtaining tooth profile parameters of a straight-tooth bevel gear; calculating a tooth die included angle and a tooth die inclination angle of a positioning body matched with the straight-tooth bevel gear based on the tooth profile parameters; and constructing a positioning body model matched with the straight-tooth bevel gear according to the tooth mold included angle and the tooth mold inclination angle. According to the method, the problems of low precision and poor efficiency caused by machining errors, dependence on design experience and lack of verification means of a traditional surface contact positioning body are solved.

The utility model relates to the technical field of machining, and discloses a self-centering chuck fine centering mechanism which comprises a base, a chuck body is connected to the upper end of the base, clamping jaw sliding grooves are symmetrically formed in the upper end of the chuck body in a crossed mode, clamping jaws are arranged in the clamping jaw sliding grooves in a sliding mode, driving grooves are formed in the lower ends of the clamping jaws, and a conical tooth disc is rotationally arranged in the chuck body. A spiral groove is formed in the upper end of the bevel gear disc and matched with the driving groove, bevel gears are symmetrically arranged at the lower end of the bevel gear disc and rotationally connected with the chuck body, an inner square rotating hole is formed in the axis end of one end of each bevel gear, and fine adjustment rods are distributed on the circumference of the lower portion of the chuck body. According to the utility model, the eccentric function of the center of the main shaft of the equipment and the center of a clamped part is realized through the adjustment of the fine adjustment rod on the side surface, secondary clamping and an additional eccentric clamp are not needed, the processing time and cost are reduced, all eccentric adjustments are completed through one-time clamping, error accumulation is reduced, and the overall precision of the part is improved.

The utility model discloses ore sand vibration screening equipment with a dust falling function, and belongs to the technical field of ore sand screening, the ore sand vibration screening equipment comprises a main body, a cavity is arranged at the top end in the main body, one side of the cavity is rotatably connected with a rotating wheel, one side of the rotating wheel is provided with an atomizing spray head penetrating into the cavity, and the atomizing spray head is provided with a dust falling device. One end of the top of the rotating wheel is provided with a tooth pattern plate, one side of the atomizing nozzle is provided with conical teeth, the inner wall of the cavity is provided with a tooth plate matched with the conical teeth, and the top end of one side of the main body is provided with a rotating motor. The rotating motor drives the gear to rotate, the gear drives the rotating wheel to rotate through the tooth pattern plate, the rotating wheel drives the four sets of atomizing nozzles to rotate at the moment, meanwhile, the conical teeth are matched with the tooth wheels, the conical teeth drive the atomizing nozzles to rotate, and the two modes are combined. And planar water mist is formed at the top end in the main body, so that dust can be effectively isolated.

The invention relates to the technical field of crushing equipment, and particularly provides an integrated crusher for a sulfide iron ore raw material, which comprises a support, a crushing plate and a tooth roller. A rotatable shell is arranged on the support; the crushing plate is vertically arranged in the shell; the tooth roller is conical and is arranged in the shell in a self-rotating manner, and a gap is formed between the tooth roller and the crushing plate; the two ends of the tooth roller are rotationally connected with the two opposite side walls of the shell correspondingly, and the tooth roller drives the raw materials to move towards the crushing plate when rotating. The shell is configured to adjust the rotation angle of the shell according to the size and hardness of the raw materials to drive the tooth roller to deflect, so that the proportion of the raw materials distributed on the tooth roller is changed; wherein the raw material proportion of the small-diameter end of the tooth roller is in positive correlation with the size and hardness of the raw materials. According to the scheme, the conical tooth roller is arranged, and the shell rotates to drive the tooth roller to deflect, so that the proportion of raw materials at the large-diameter end and the small-diameter end of the tooth roller is matched with the size and hardness of the raw materials, the crushing effect is guaranteed, and the crushing efficiency is improved.

The utility model relates to the technical field of coupling clearance adjustment, and disclose a tooth coupling of adjustable clearance, including two groups of shell. The tooth coupling of adjustable clearance, through the setting of the inner gear, the external gear and the pusher assembly, there will be a certain clearance between the inner gear and the external gear under the installation or long time use of coupling, at this moment, rotate the rotary valve, the rotary valve rotation drives the screw rod to rotate, the limiting sleeve rotates in the inside of the sleeve, the inner gear moves on the screw rod when the screw rod rotates, since the inner gear and the external gear tooth surface are all conical, when the inner gear moves, the inner conical tooth surface and the conical tooth surface of the external gear will change the degree of adhesion, through the accurate control of the moving distance of the inner gear, can make the tooth surface that originally exists the clearance realize the close meshing again, make the cooperation clearance between the inner gear and the external gear be eliminated, thereby reach the purpose that adjusts and compensates the clearance, guarantee the stability and precision of coupling transmission.

The utility model discloses a conical toothed thread anti-loose connecting structure which comprises a nut and a screw, a first convex cone is arranged on the nut, an internal thread of the nut extends into the first convex cone, a first connected piece between the nut and the screw is provided with a first concave cone, and the first convex cone is matched with the first concave cone. The taper of the first concave cone is larger than that of the first convex cone, and conical teeth are arranged on the outer side of the first convex cone. Compared with the prior art, the first convex cone of the nut is tightly abutted against the first concave cone of the first connected piece, the first convex cone is driven to tightly hold the screw rod, and when the loosening tendency occurs, the first connected piece has the upward moving tendency to apply force to the nut, so that the nut is prevented from being loosened. And the force enables the threads at the first convex cone of the nut to generate inward radial pressure along the first concave cone, so that the screw rod is tightly held, the nut is prevented from loosening, and the anti-loosening requirement is met. And secondly, the conical teeth on the first convex cone can increase the friction force between the first convex cone and the first connected piece, and the anti-loosening effect is further improved.

The application relates to a conical complex piece and a drill bit, which comprises a base and a conical tooth arranged on the top surface of the base, the bottom end of the conical tooth is connected with the top surface of the base, the top end of the conical tooth is provided with an impact surface for contacting with the external environment, first recessed surfaces and second recessed surfaces are arranged on the circumferential outer wall of the conical tooth and are spaced apart in the circumferential direction, and the side edges of the first recessed surfaces and the second recessed surfaces which are close to each other both extend along the generatrix direction of the conical tooth, and a ridge is formed between the first recessed surfaces and the second recessed surfaces. The ridge can effectively scrape the stratum structure during rotation, improves the attackability and the ability of eating into the stratum, and finally improves the efficiency of the conical complex piece during drilling. In addition, the impact surface arranged at the top end of the conical complex piece has strong impact resistance when contacting with the stratum, and finally the drill bit has strong impact resistance and strong scraping effect.

The utility model relates to the technical field of anti-collision rubber blocks, and discloses a convenient-to-install lifting type anti-collision rubber block which comprises a base block, an installation well is formed in the middle of the top wall of the base block, sliding grooves are formed in the left side and the right side of the inner wall of the installation well, and conical tooth grooves are formed in the bottom ends of the inner walls of the two sliding grooves. A base is arranged on the inner wall of the mounting well, inverted cone clamping teeth are fixedly connected to the bottom ends of the left side and the right side of the outer wall of the base, spring grooves are formed in the bottom ends of the front side and the rear side of the base, and tension springs are fixedly connected to the inner walls of the two spring grooves. According to the anti-collision rubber block, the base block is provided with the mounting well and the sliding groove, the base is preliminarily fixed through the conical tooth groove and the inverted conical clamping tooth, and then the tension spring pushes the limiting block to enable the locking round head and the locking hole to be clamped and further fixed, so that the effect of conveniently and efficiently mounting and fixing the base and the anti-collision rubber block is achieved, and complex tools are not needed; and the installation convenience is greatly improved.

The utility model discloses a screw with a conical tooth section, which relates to the field of screws and comprises a screw body, a screw end and a nut end, the screw body comprises the screw end and the nut end, the top of the screw end is fixedly connected with the nut end through a thread mechanism, and the screw end comprises a main screw rod, a conical rod and an auxiliary screw rod. The bottom of the main screw rod is fixedly connected with a conical rod, the bottom of the conical rod is fixedly connected with an auxiliary screw rod, the rod wall of the screw end is provided with a conical tooth thread, one end of the rod wall of the main screw rod is fixedly connected with a limiting ring, and the other end of the rod wall of the main screw rod is slidably connected with a damping gasket. The nut end comprises a connecting arc-shaped plate, a connecting block and a nut. According to the screw body, the screw end and the nut end, the anti-theft function is achieved on the basis that loosening is avoided after an object is driven in, and therefore the problems that an existing screw is prone to shaking in the using process, the screw rotates reversely to be loosened, and good anti-theft performance does not exist are solved.

The invention discloses a hard alloy conical tooth of a gradient structure and a preparation method and application thereof.The hard alloy conical tooth is divided into a hard alloy tooth root, a connecting layer of an N-layer gradient structure and a hard alloy tooth tip from bottom to top, and the hard alloy tooth tip comprises, by volume, 3-5% of Co and 0-40% of cBN; the hard alloy tooth root comprises the following components in percentage by volume: 20-25% of Co, 0-10% of cBN and the balance of carbide, the connecting layer of the gradient structure comprises Co and carbide, and the volume fraction of Co is sequentially decreased or periodically changed from bottom to top within the range of 5-20%. According to the hard alloy conical tooth with the gradient structure, the cutter has excellent wear resistance and impact resistance and long service life, and the drilling efficiency and the service life of the tooth for drilling and digging equipment such as a shield tunneling machine are improved through the design.

The utility model relates to the technical field of clamps for machining, and discloses a wringing roller machining fixing clamp which comprises a supporting table, stand columns are fixedly arranged at the bottom end of the supporting table, moving mechanisms are arranged on the two sides of the bottom end of the supporting table, and L-shaped plates are arranged on the two sides of the top end of the supporting table. By arranging the moving mechanism, the fixing mechanism and the rotating mechanism, during use, through cooperative use of a first motor, a gear, a notch, a U-shaped toothed plate, a first telescopic rod, a sliding block and a sliding groove, adjustment and fixation can be conducted according to the length of a wringing roller, and then through cooperative use of a rotating cylinder, a screw rod, a rotating handle, a clamping plate and a second telescopic rod, the wringing roller can be conveniently and rapidly fixed; according to the wringing device, the wringing roller can be fixed, then a second motor, a shaft column, a first conical tooth and a second conical tooth are used in cooperation, the wringing roller can be rotated according to the machining requirement, the wringing roller can machine other positions, use is convenient and fast, and efficiency is high.

The invention relates to the technical field of coating curing, in particular to a curing device for an anti-corrosion and anti-seepage composite coating of a pipeline, comprising: an end clamping mechanism comprising an end disc, an end cylinder, a movable plate, a semicircular clamping ring, a base plate and a main conical fluted disc; the movable heating mechanism comprises semicircular lantern rings, a supporting rod, an I-shaped wheel and a chain, the two semicircular lantern rings are symmetrically arranged relative to the vertical plane to form a curing barrel, and a plurality of heating curing strips are arranged on the inner walls of the semicircular lantern rings in an array mode in the axis direction; the fixing mechanism comprises base tables and a flow guide frame, the two end clamping mechanisms are symmetrically arranged at the two ends of the movable heating mechanism, the end clamping mechanisms are fixedly installed on the top faces of the base tables, the flow guide frame is fixedly connected to the position between the two base tables, and a rectangular frame at the upper end of the flow guide frame is used for limiting and guiding when the movable heating mechanism moves; the curing device can realize effective curing of inner and outer coatings of the pipeline, the whole curing process is simple and convenient to operate, and the curing uniformity is good.

The utility model relates to the technical field of slope supporting, and provides a slope supporting structure for blasting excavation of a pumped storage power station. When a currently laid slope is changed due to terrain influence, a ground drilling nail at each through groove can be firstly pulled out, and then a screw cover is screwed to drive a first conical tooth to rotate; a second conical tooth meshed with the side bottom of the first conical tooth drives a threaded rod to rotate synchronously, then an extension supporting sliding plate in threaded connection to the outer side of the threaded rod slides in a sliding way, and through the design, the overall combination length of the slope supporting sleeve plate and the extension supporting sliding plate can be adjusted to be matched with the length of a current slope; secondly, secondary positioning and fixing work is completed on the slope supporting sleeve plate and the extension supporting sliding plate at the current side slope through the ground drilling nails, and compared with a comparison file, the overall length of the slope supporting sleeve plate and the extension supporting sliding plate can be rapidly adjusted without cutting or splicing till the overall length is matched with the length needed by current side slope supporting; therefore, the purpose of reducing construction difficulty and time cost is achieved.

The utility model discloses a manual filter element disassembly-free stirring cleaning ultrafilter, and relates to the technical field of ultrafilters. The device comprises a shell, a sealing cover is arranged on the upper end face of the shell, a filter element body is arranged in the shell, a blocking barrel is fixed to the lower end of the shell, a conical barrel located in the blocking barrel is fixed to the lower end of the shell, and a second conical tooth block located in the blocking barrel is arranged under the conical barrel. A first conical tooth block meshed with the second conical tooth block is arranged in the blocking barrel, a through hole is formed in the surface side wall of the blocking barrel, an insertion block inserted into the through hole is fixed to the shaft rod end of the first conical tooth block, a rocker is arranged outside the blocking barrel, and the end of the rocker is inserted into the insertion block through an formed notch. Through linkage meshing rotation of the first conical tooth block and the second conical tooth block, forward and reverse rotation of the filter element body can be controlled, and the cleaning effect on the filter element body is improved.

The application relates to a machining device and machining process of a three-head variable-pitch conical tooth bar, and relates to the three-head variable-pitch conical tooth bar machining technical field; the machining device of the three-head variable-pitch conical tooth bar comprises a device body, a rotating shaft, a rotating mechanism and a cutting mechanism are arranged on the device body, the rotating mechanism is used for driving the rotating shaft to rotate relative to the device body, the cutting mechanism is used for cutting the side wall of a workpiece in rotation, a feeding mechanism is further arranged on the device body, the feeding mechanism comprises a feeding frame, a feeding piece and a clamping assembly, the feeding piece is used for driving the feeding frame to move along the axis direction of the rotating shaft, the clamping assembly is arranged on the feeding frame and is used for clamping the workpiece on the rotating shaft, and the cutting mechanism is further used for cutting the end of the part, where three spiral surfaces on the workpiece are all machined, to separate the machined three-head variable-pitch conical tooth bar. The application has the effect of improving the machining efficiency of the three-head variable-pitch conical tooth bar.

The utility model belongs to the technical field of gears, and particularly relates to a gear with internal spline inverted conical teeth, which comprises a gear body, and a first annular hole, a third annular hole and a fourth annular hole are sequentially formed in the middle of the gear body from right to left. The inner surface of the fourth annular hole is integrally provided with a plurality of internal spline inverted conical teeth in an annular arrangement mode. A plurality of outer teeth are integrally arranged on the outer surface of the gear body in an annular arrangement mode, and a tooth groove is formed in the space between the two sets of outer teeth. When the inner spline reverse taper teeth are connected with the reverse taper structure of the combination teeth through the gear sleeve, axial self-locking force can be provided, and the meshing gear sleeve is prevented from axially disengaging from the gear position under vibration or impact loads.

The invention provides a permafrost region ice bolt pile and a construction method, the permafrost region ice bolt pile is suitable for road and railway roadbed engineering, and the ice bolt pile is jointly composed of a pile body center shaft, a connector, a bionic conical tooth structure, small-diameter threaded blades, reserved connecting holes and a splicing reinforcing assembly; the two sets of pile body center shafts are arranged and are each of a hollow structure, bionic conical teeth are integrated at the bottom ends of the pile body center shafts of the lower side set, and small-diameter threaded blades are further arranged on the peripheral walls of the pile body center shafts. The construction method comprises the following key procedures: (a) geological exploration analysis; (b) prefabricating a pile body assembly; (c) field pretreatment; (d) measuring and positioning; (e) pile position calibration; (f) screwing in an ice bolt pile; (g) splicing the pile sections step by step; (h) removing residual frozen soil chippings in the hollow shaft; (i) specially-made reinforcing slurry is poured in a layered mode. The bearing capacity and stability of the pile foundation in the permafrost region can be improved, and the safety and stability of roadbed engineering are ensured.

According to the technical scheme, the impact crushing type PDC drill bit assembly comprises a main body and an impact head, the impact head is installed in the middle of the top of the main body, a square connecting column is installed at the bottom of the impact head, an inner groove is formed in the middle of the interior of the main body, and an inner hole is formed in the bottom of the interior of the main body; and a movable column is installed in the inner hole, reverse rings are installed on the two sides, close to the top, of the outer surface of the movable column, a cutter wing is installed on the outer surface of the main body, a conical tooth A is installed on one side of the cutter wing, and a conical tooth B is installed on the portion, located in the gap of the conical tooth A, of the outer surface of the cutter wing. According to the impact crushing type PDC drill bit assembly, the problems that when an existing PDC drill bit drills holes, rock is mainly crushed and drilled through rotating conical teeth, the drilling pressure is relatively fixed, and the rock crushing efficiency is relatively poor are solved, the time needed for rock crushing is shortened, and therefore the drilling efficiency of the drill bit is improved.

The utility model discloses a fast buckle type installation louver blade advertisement gate which comprises a machine box, a main rod, blades, an auxiliary rod and a floor rod, a main rod inserting buckle piece is arranged in the main rod, conical teeth are arranged outside the main rod inserting buckle piece, a first rotating shaft is arranged in the main rod inserting buckle piece, the first rotating shaft is transversely arranged in the main rod inserting buckle piece, and a second rotating shaft is arranged in the main rod inserting buckle piece. An upper connecting piece is arranged on the upper portion of the blade, conical teeth are arranged outside the upper connecting piece, the upper connecting piece is in meshed rotating connection with the main rod inserting fastener, a second rotating shaft is arranged in the upper connecting piece and is vertically arranged, one end of the second rotating shaft is clamped in an inner shaft of the upper connecting piece, and the other end of the second rotating shaft is clamped in the first rotating shaft. Lower connecting pieces are arranged on the lower portions of the blades, auxiliary rod inserting and buckling pieces are arranged in the auxiliary rods, and the lower connecting pieces are rotationally connected with the auxiliary rod inserting and buckling pieces. The advertisement gate is simple in overall structure, free of too many complex accessories, easy to replace and convenient to maintain, and synchronous steering of all the blades in the advertisement gate is achieved.

The present invention discloses a material mixing and extrusion system based on the rolling action of bevel-toothed rollers and bevel-toothed die plates. A bevel-toothed die plate with a narrow slit is added to the mixing system, and a bevel-toothed roller group is fixed on the barrel so as to mesh with the bevel-toothed die plate. The screw rotates to drive the bevel-toothed die plate, thereby rotating the bevel-toothed rollers. After the material is plasticized and transported by the screw into the roller die plate area, it first passes through a low-pressure zone with gaps between different rollers in the same group. It is then dragged by the rollers and die plate into a high-pressure zone where the two mesh. In the high-pressure zone, the material is forced to mix and disperse due to the rolling action generated by the meshing, and then extruded from the narrow slit of the die plate. The pressure of the low-pressure zone and the high-pressure zone formed in the extrusion system changes periodically, realizing volume pulsating deformation positive displacement transportation and continuous mixing and dispersion of the material, thereby improving the mixing and dispersion effect of the material.