54 results about "Conical tooth" patented technology

The utility model relates to the technical field of cloth rolling machines, in particular to a tension adjusting device for a cloth rolling machine, which comprises a machine body, the machine body comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a supporting plate, the inner side of the supporting plate is movably connected with an unwinding roller, and the inner side of the supporting plate is movably connected with a winding roller. A tensioning roller is arranged on the inner side of the supporting plate. An adjusting mechanism is arranged on the inner side of the supporting plate. The motor drives the rotating rod to rotate, first conical teeth can rotate, second conical teeth can drive the threaded rod to rotate, then the connecting block can drive the connecting plate and the fixing frame to ascend and descend under the action of the threaded rod, the position of the tensioning roller can be adjusted conveniently, and then the effect of adjusting the tension of cloth can be achieved; the cloth can be prevented from being loosened or tightened too tightly, so that the cloth can be prevented from being wrinkled or broken, and the quality of the cloth and the cloth rolling effect can be guaranteed.

The utility model relates to the technical field of internal grinding of industrial iron pipes, and discloses a grinding mechanism for manufacturing industrial parts, which comprises a base, three-jaw chuck groups are connected to two sides of the top of the base, a connecting frame is connected to the left side of the top of the base, and a hydraulic rod is connected to the right side of the connecting frame. The right side of the hydraulic rod is fixedly connected with a circular ring, the right side of the hydraulic rod is connected with a grinding unit, the cleaning mechanism is installed outside the hydraulic rod, the front face of a rolling wheel is connected with a first conical tooth, the front face of the first conical tooth is in meshed connection with a second conical tooth, and the left side of the second conical tooth is fixedly connected with a cleaning ring. According to the grinding mechanism for industrial part manufacturing, scrap iron is prevented from being retained in the iron pipe, so that the grinding time of the iron pipe is delayed, the cleaning mechanism does not need to be driven by additional mechanical power, energy consumption during iron pipe grinding is reduced, and economic loss generated by iron pipe grinding is reduced.

The utility model discloses a building concrete structure quick-release formwork supporting frame which comprises first formwork supporting frames arranged in a bilateral symmetry mode, and second formwork supporting frames are symmetrically connected between the front sides and the rear sides of the first formwork supporting frames on the left side and the right side. Locking rods are connected to the opposite faces of the first formwork supporting frames on the left side and the right side in a penetrating and bearing mode, and the ends of the locking rods are connected with butt joint grooves. The tops of the front side and the rear side of the first formwork supporting frame symmetrically penetrate through bearings to be connected with rotating rods, the rotating rods extend into the inner walls of the front side and the rear side of the first formwork supporting frame, and the rotating rods are connected with locking rods through conical tooth connecting pieces. Supporting rods are hinged to the middles of the outer sides of the first formwork supporting frame and the second formwork supporting frame correspondingly. When the quick-release formwork supporting frame of the building concrete structure is used, the adjacent formwork supporting frames can be conveniently and quickly mounted and dismounted, double fixation is carried out on the joints of the formwork supporting frames, the connection stability is improved, and meanwhile the overall placement stability can be improved through the supporting rods.

The utility model relates to the technical field of mechanical arm part machining, in particular to a deburring device for precise mechanical machining of mechanical arm parts, which comprises a table body comprising a machining table. A first rotating rod drives a first conical tooth to rotate, so that a second conical tooth can drive a positive and negative screw rod to rotate, and then a moving block can drive a limiting plate to move, so that a clamping plate and a rubber pad can move along with the limiting plate and clamp a part, and the part can be fixed; according to the deburring device for the mechanical arm, the parts are not prone to moving when placed on the machining table, displacement of the parts during deburring can be avoided, stability of the parts can be guaranteed, the deburring effect can be improved, the mechanical arm can be better produced, and the production efficiency of the mechanical arm is improved. And meanwhile, the friction force of contact between the clamping plates and the parts can be increased through the arrangement of rubber pads, so that the fixing effect of the clamping plates on the parts is better.

The invention discloses a double-bevel-tooth-roller turning conveyor, and belongs to the technical field of conveyor manufacturing. The fan-shaped conveying belt is formed by oppositely folding an annular conveying belt which is formed by adhering or sewing adjacent edges of the unfolded conveying belt with the fan-shaped angle being B, and radial teeth are arranged on the inner side face of the fan-shaped conveying belt. The first conical tooth roller and the second conical tooth roller are arranged on the rack, one of the first conical tooth roller and the second conical tooth roller is arranged at one end of the fan-shaped conveying belt, the other one of the first conical tooth roller and the second conical tooth roller is arranged at the other end of the fan-shaped conveying belt, and conical teeth matched with the radial teeth are arranged on the conical surfaces of the first conical tooth roller and the second conical tooth roller in the conical generatrix direction; the bevel gear meshing limits the sliding of the conveying belt towards the direction of the conical top end.

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 invention discloses a translational helical-tooth-trace bevel gear and a processing method, the tooth trace of the translational helical-tooth-trace bevel gear is a translational spiral line after being unfolded along an indexing conical surface, the translational spiral line is formed by a tool rotating circle and a corresponding translational angle around the cone top of the bevel gear, and the gear teeth of the bevel gear are provided with concave tooth surfaces and convex tooth surfaces; efficient machining of the gear can be achieved, and the gear machining precision is slightly affected by the tool mounting precision; the problems that in the prior art, bevel gear machining efficiency is low, and the machining precision is greatly influenced by tool installation precision are solved.

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 invention provides a sintering material layer ventilation punching device and method.The device 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 correspondingly, and the two supports are fixed to the two sides of a trolley channel in front of a sintering machine head correspondingly; the round roller is higher than the trolley, and the length of the round roller is the same as the width of the trolley; 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, the conical teeth are detachably connected to the tooth holders, and the included angle between every two adjacent tooth holder arrays is not larger than 45 degrees. Different conical teeth can be replaced according to production requirements, rotation is not required to be driven by external force, the efficiency of punching air holes is improved, and the production cost is reduced.

A small-angle cross-axis transmission internal meshing bevel gear structure and its design method, the bevel gear structure includes an internal gear and an external gear with conical tooth profiles, the meshing mode of the internal gear and the external gear is a spatial cycloid meshing, and the axial lines of the internal gear and the external gear intersect at a set angle; the meshing surface of the internal gear and the external gear is a continuous closed spatial curved surface, and the internal gear rotates and revolves simultaneously when meshing around the external gear. The meshing surface of the internal gear is a rolling cone surface, and the meshing surface of the external gear is a fixed cone surface. The independent variables in the gear profile solution process are: the transmission ratio i HV , shape parameter c, and the independent variables of the coordinate system (the radius R1 of the bottom surface of the inner gear pitch cone and the large end pitch cone angle δ1). Therefore, in the specific design process of the present invention, the above independent variables can be adjusted according to different working conditions. The gear of the present invention has higher rotation stability during the precession process and better transmission effect.

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 an automatic cleaning device for MVR (mechanical vapor recompression) evaporation equipment, which belongs to the technical field of MVR evaporation equipment and comprises an evaporator body, two fixing cylinders are fixedly connected to the top of the evaporator body, a stepping motor is fixedly connected to the top of one fixing cylinder, and the output end of the stepping motor rotatably penetrates through the fixing cylinders. A threaded rod is fixedly connected; the device has the beneficial effects that the stepping motor and the rotating motor are arranged, the stepping motor and the rotating motor operate, a threaded rod can rotate through operation of the stepping motor, an annular block can be driven to move downwards through limiting of a fixed cylinder and a sliding cylinder, then the rotating motor operates, a bevel gear can rotate, and through a conical gear ring, the threaded rod can be driven to rotate; and an annular rotating block, a scraping plate and a scraping strip can be driven to rotate, dirt on the inner wall of the device can be cleaned through rotating downward movement of the scraping strip and the scraping plate, and therefore people can conveniently and comprehensively clean the inner wall of the device.

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.

The utility model relates to the technical field of water pollution prevention and control, in particular to floating object salvage equipment for water pollution prevention and control, which comprises a rod body, the rod body comprises a salvage rod, a salvage frame is arranged on the surface of the salvage rod, and a salvage net is arranged on the inner side of the salvage frame; an adjusting mechanism is arranged on the inner side of the fishing rod and comprises a rotating rod. By rotating the rotating rod, the first conical tooth can rotate, and then the second conical tooth can drive the screw rod to rotate under the action of the first conical tooth, so that the extension rod can move in the fishing rod, and the effect of prolonging the length of the fishing rod can be achieved; the position of the fishing frame can be conveniently adjusted according to the actual fishing condition, so that the fishing frame and the fishing net can extend to a farther position for fishing during fishing, meanwhile, the fishing range can be expanded, the fishing flexibility can be improved, and water pollution can be better prevented and controlled.

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 discloses a quick-release clamping device for a dental robot planter, and belongs to the technical field of dental medical treatment. The holder comprises a holder base and a holder rear end which are connected with each other, the holder rear end is of a cylindrical structure, a driving bevel gear and a lead screw are arranged in the holder rear end, the lead screw is parallel to the central axis of the holder rear end, and the driving bevel gear penetrates through the side wall of the holder rear end and is connected with a bearing of the holder rear end; conical teeth are arranged at one end of the lead screw and are meshed with the driving bevel gear; two opposite long grooves are further formed in the side wall of the rear end of the holder. A sliding block which moves parallel to the central axis of the rear end of the holder is restrained in the long groove; the sliding block penetrates through the two long grooves and is in threaded connection with the lead screw. A holder front end is hinged to the other side of the holder rear end; a linkage rod hinged to the holder is arranged in the middle of the front end of the holder, one end of the linkage rod is hinged to the front end of the holder, and the other end of the linkage rod is hinged to the sliding block. According to the invention, the pitching angle of the central shaft of the tooth machine head tool relative to the holder base is changed.

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 aluminum single plate installation, and proposes a firmly installed aluminum single plate, which drives a threaded tube and a first conical tooth located at the bottom of the threaded tube to rotate by twisting a twist handle, and at this time, two groups of second conical teeth meshingly connected on both sides of the first conical teeth rotate synchronously and drive the second threaded rod to rotate, and at this time, a slide seat threadedly connected to the outside of the second threaded rod moves synchronously in an installation groove until a mounting column on one side of the slide seat is inserted into the slot, and the above is the horizontal insertion and fixing installation work of the two groups of aluminum assembly plates, and then the staff can twist the twist disk to make the twist disk drive the first threaded rod to rotate in the threaded tube until the first threaded rod is screwed into the through groove in turn until it extends out from the bottom of the aluminum assembly plate, and this design can increase the connection stability between the two groups of aluminum assembly plates through a horizontal / vertical connection method, and at the same time greatly increase the convenience of disassembly and assembly of the two groups of aluminum assembly plates, so as to facilitate the later disassembly and replacement of the damaged single group of aluminum assembly plates.

The utility model relates to the technical field of roll forming, and proposes a roll forming device with adjustable spacing. By starting a cylinder, the telescopic end of the cylinder drives a support plate to move up and down. At this time, the semi-ring support plates fixedly connected to the two sides of the support plate synchronously drive the adjusting roller supported on the upper part thereof to move up and down. In particular, when the adjusting roller and the third conical tooth are lifted and moved under the action of the adjusting component to adjust the spacing between the adjusting roller and the fixed roller, the fourth conical tooth engaged on one side of the third conical tooth is lifted and moved synchronously with the cooperation of the first mounting sleeve and the second damping spring. In particular, the plug column located on the other side of the adjusting roller will also be lifted and moved synchronously under the action of the second mounting sleeve and the first damping spring. This design can ensure that there is no need to shut down the motor, that is, to ensure that the fixed roller and the adjusting roller complete the spacing adjustment work during operation, thereby greatly improving the rolling work efficiency under the premise of ensuring the overall applicability of the equipment.