52 results about "Tapered teeth" patented technology

A seat adjustment mechanism includes a first component and a second component movable relative to the first component. A drive mechanism is drivingly connected to the second component for moving the second component relative to the first component. The drive mechanism includes a drive motor drivingly connected to a first gear member having conical involute teeth. A second gear member includes conical involute teeth in meshing engagement with the conical involute teeth of the first gear member. The conical involute teeth have a tapered tooth thickness, a tapered root and a tapered outside diameter.

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 present application relates to the technical field of inductance filtering, and discloses a coil welding positioning method and device. The method comprises the following steps: placing each long copper sheet in a pre-assembly position; inserting a plurality of first tapered teeth into the middle part between each two adjacent long copper sheets; inserting a plurality of second tapered teeth between adjacent long copper sheets, so that an inner end part is inserted between each two adjacent second tapered teeth; inserting a plurality of third tapered teeth between adjacent long copper sheets, so that an outer end part is inserted between each two adjacent third tapered teeth; pushing the long copper sheet by using a positioning push block; making all the first tapered teeth disengage from the long copper sheet; clamping all the long copper sheets between the positioning push block and a workbench, so that the long copper sheet moves from the pre-assembly position to a welding position. The method uses three different tapered teeth to achieve accurate positioning of the long copper sheet and improve the welding efficiency.

This invention relates to the field of performance testing equipment technology, specifically to a multi-directional testing device and method for the tensile properties of pure rubber film. The device includes a film bottom clamping mechanism, comprising a base plate, on which a third pressure plate and a second fixing plate are fixedly mounted. A fourth pressure plate is provided on the second fixing plate to clamp the pure rubber film onto the third pressure plate. A third bearing plate is fixedly mounted on the base plate, and a second splined bushing is rotatably connected within the third bearing plate. A second bevel tooth is fixedly mounted at one end of the second splined bushing, and a first bearing plate is rotatably connected to the outer wall of the second splined bushing. A first top plate and a second bearing plate are fixedly mounted on the first bearing plate, and a first threaded rod is rotatably connected to the first top plate and the second bearing plate. This device allows for testing the maximum tensile strength of the pure rubber film in multiple directions. The device is easy to operate, has a long service life, and is easy to maintain.

Provided is an automotive awning mounting 10 comprising a vehicle leaf portion 12 configured for operative mounting to a vehicle, the vehicle leaf portion 12 comprising at least one gudgeon 14 defining a plurality of tapered teeth 16, and an awning leaf portion 18 configured for operatively supporting an automotive awning, the awning leaf portion 18 comprising at least one gudgeon 14 defining a plurality of tapered teeth 16. The mounting 10 also includes a pin 20 passed via the gudgeons 14 to coaxially align said gudgeons 14 and connect the leaf portions 12 and 18, and a spring 22 arranged to bias said gudgeons 14 together so that the respective tapered teeth 16 mesh to form a Hirth coupling 24. In this manner, the respective leaf portions 12 and 18 are respectively pivotable with a force required to overcome the resulting spring-biased Hirth coupling 24 determined by a spring constant of said spring and a teeth profile angle of the Hirth coupling 24.

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.

A vehicle seat adjustment mechanism includes a first component and a second component that is movable relative to the first component. A drive mechanism is drivingly connected to the second component for moving the second component relative to the first component. The drive mechanism includes a drive motor drivingly connected to a first gear member having conical involute teeth. A second gear member includes conical involute teeth in meshing engagement with the conical involute teeth of the first gear member. The conical involute teeth have a tapered tooth thickness, a tapered root and a tapered outside diameter.

The utility model relates to the technical field of drill bit disassembly and assembly, in particular to a drill chuck quick loosening and tightening wrench which comprises a sleeve, a rotating groove is formed in the outer wall of the sleeve, a bolt hole is formed in the sleeve and penetrates through the rotating groove, a pusher dog is installed in the rotating groove, a through hole is formed in the pusher dog, and a bolt is installed in the bolt hole. The bottom of the bolt penetrates through the bolt hole and the through hole, a nut is in threaded connection with the outer wall of the bottom end of the bolt, a first threaded hole is formed in the outer wall of the pusher dog, a first threaded column is in threaded connection with the interior of the first threaded hole, and a handle is fixedly connected to the other end of the first threaded column. The key is easy to operate and operate, the safety coefficient is improved, the production efficiency is improved, abrasion of the conical teeth of the key is avoided, and the conical teeth on the outer wall of the drill chuck are prevented from being damaged or collapsed.

A set of blades (20) is operatively connected to a hair clipper (22) and includes a stationary blade (28) and a movable blade (34) configured to move back and forth laterally relative to the stationary blade. At least one of the stationary blade and the movable blade includes a base (46) and a plurality of teeth extending from the base. The plurality of teeth includes a set of long teeth (42), each of said long teeth having a tip (52) parallel to and spaced one distance from the base defining a first cutting line; and a set of short teeth (44), each of said short teeth having a tip (52) parallel to and spaced two distances from the base defining a second cutting line spaced from the first cutting line. The first cutting line is further from the base than the second cutting line.

The utility model belongs to the field of edge sealing devices, and particularly relates to a bubble bag edge sealing device which comprises a hot-pressing edge sealing device, an edge sealing wheel is fixedly connected to the rear side of the hot-pressing edge sealing device, a cutting knife is arranged on the front side of the edge sealing wheel, and a supporting frame is fixedly connected to the front side of the cutting knife. A driving motor is fixedly connected to the upper portion of the supporting frame, a rotating cylinder is fixedly connected to the output end of the driving motor, a third bevel gear is fixedly connected to a shaft of the rotating cylinder, a transmission shaft frame is connected to the third bevel gear in a meshed mode, and a second bevel gear column is connected to the lower portion of the transmission shaft frame in a meshed mode; the end of the second conical tooth column is connected with a power piece in an engaged mode, and the middle of the power piece is connected with a material arranging piece in an engaged mode.

The present invention discloses a high-precision tensile-resistant bevel tooth synchronous belt and its reinforced structure, which belongs to the technical field of synchronous belts. The structure consists of bevel teeth, a reinforcing net, holding ribs and a base plate, and significantly improves the transmission performance of the synchronous belt by optimizing the internal structure. The bevel teeth are arranged in a dense vertical and horizontal manner, and are composed of teeth, gear rods and gear seats. The gear seats are fixed on the flexible base plate and combined with the upper pressure pad to ensure positioning and give elasticity. The holding ribs run through the bevel teeth longitudinally to enhance the tensile strength; the reinforcing net limits the displacement of the bevel teeth and enhances lateral stability. The teeth are made of solid metal, and their conical cylindrical structure is adapted to the concave conical barrel gear to achieve multi-point meshing and automatic correction. Through the unique bevel tooth meshing structure and internal reinforcement system, the problems of stress concentration and uneven force on the tooth roots of traditional synchronous belts are solved, which makes the present invention have significant advantages in special transmission fields such as high precision, strong force, uniform load and long life.

The utility model discloses a pneumatic chuck, and aims to overcome the defects in the control aspect caused by the fact that an existing chuck adopts belt transmission. The device comprises a flange seat, a bearing seat, a sliding sleeve and a transmission shaft, wherein the transmission shaft is fixedly connected with the sliding sleeve in the axial direction through a bearing and can rotate relative to the sliding sleeve; wherein one end of the transmission shaft is provided with a connecting hole which is thick outside and thin inside, the inner wall of the connecting hole is provided with a plurality of conical teeth which are distributed at equal intervals, the conical pneumatic safety chuck comprises a driving chuck and a driven chuck, the end, away from a flange seat, of a bearing seat of the driving chuck is open, the transmission shaft is slidably connected with a connecting shaft, and the connecting shaft is fixedly connected with a connecting flange. The outer wall of the connecting flange is arranged outside the bearing seat, and meshing teeth are arranged on the outer wall of the connecting flange. The structure that the outer portion is large, the inner portion is small and the inner wall is conical teeth avoids idle stroke, the precision of the device can be improved, and the precision of the safety chuck can be improved and continuous control can be achieved through driving in a tooth meshing mode.

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.

Provided is an automotive awning mounting 10 comprising a vehicle leaf portion 12 configured for operative mounting to a vehicle, the vehicle leaf portion 12 comprising at least one gudgeon 14 defining a plurality of tapered teeth 16, and an awning leaf portion 18 configured for operatively supporting an automotive awning, the awning leaf portion 18 comprising at least one gudgeon 14 defining a plurality of tapered teeth 16. The mounting 10 also includes a pin 20 passed via the gudgeons 14 to coaxially align said gudgeons 14 and connect the leaf portions 12 and 18, and a spring 22 arranged to bias said gudgeons 14 together so that the respective tapered teeth 16 mesh to form a Hirth coupling 24. In this manner, the respective leaf portions 12 and 18 are respectively pivotable with a force required to overcome the resulting spring-biased Hirth coupling 24 determined by a spring constant of said spring and a teeth profile angle of the Hirth coupling 24.

The present application relates to the technical field of assembly gauge, in particular to a steam turbine blade simulation assembly gauge, which comprises a positioning disc group, a blade root clamping piece and a plurality of driving teeth. The positioning disc group comprises a rotating disc seat, a threaded disc, a tooth guide rod, a pull ear rod and a sliding sleeve piece. The threaded disc is internally provided with bevel gears and screw threads for engaging with the driving teeth, so as to drive the tooth guide rod to slide in the radial direction. The tooth guide rod drives the pull ear rod to slide through a linkage plate. The surface of the pull ear rod is provided with an inclined sliding groove and an inclined wedge surface, and is in sliding cooperation with a sliding guide block and a pulley on the inner side of the sliding sleeve piece, so as to realize clamping or loosening actions. The blade root clamping piece comprises a fixed plate part, an elastic ear part and a blade root clamping ear, and the blade root clamping ear is arranged in a V shape. The present application realizes multi-point synchronous clamping and automatic loosening of the blade root, has the advantages of uniform clamping force, high clamping precision, non-destructive fitting and convenient operation, and significantly improves the precision and efficiency of steam turbine blade assembly measurement.

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 invention discloses an irradiation sterilization device with an adjustable height position, and mainly relates to the technical field of irradiation sterilization. Comprising a movable frame, a sliding plate is slidably connected to the movable frame, vertical plates are arranged at the two ends of the sliding plate respectively, a first connecting rod and a second connecting rod are rotationally connected to the two ends of each vertical plate respectively, and the ends of the first connecting rods and the ends of the second connecting rods are rotationally connected with a bottom frame and a bearing platform respectively; the end of the first screw is in key connection with conical teeth, the movable frame is rotationally connected with a driven shaft, the end of the driven shaft is provided with a driving wheel, and the driving wheel is provided with convex teeth meshed with the conical teeth. The device has the beneficial effects that the problem that the supporting gravity center of the lifting mechanism and the overall gravity center of the bearing platform are difficult to keep collinear and coincide is solved, the problem that the bearing platform is inclined, deviated and other posture anomalies is prevented, then the irradiation uniformity of an irradiation source to objects is improved, the operation stability of the whole irradiation sterilization equipment is improved, and the service life of the whole irradiation sterilization equipment is prolonged.

The invention relates to the technical field of screw taps, and particularly discloses combined type tapping equipment and a working method.The combined type tapping equipment comprises a cone and a screw tap wrench, the cone and the screw tap wrench are in clearance fit and are fixed through a pin shaft, the cone is provided with a tooth path and a reverse thread groove, conical teeth are installed in the tooth path, and tapping tooth bodies are arranged on the conical teeth; a tapping sleeve is fixedly connected to the tap wrench, a tap base is rotationally installed on the tap wrench through a bearing, a base through hole is formed in the middle of the tap base, the tap base is located in the tapping sleeve, a plurality of guide grooves are formed in the tapping sleeve, and grips are installed on the tap base and in the guide grooves of the tapping sleeve. The handle rotates to control the tapping sleeve, the tap wrench and the cone to rotate integrally; the overall use efficiency of the screw tap is improved, the production cost is reduced, the application range is wide, reciprocating rotary tapping is achieved instead of consistent rotation, operation is simpler, and efficiency is higher; the operation is more labor-saving, the labor input is less, and the replacement cost is lower.

The invention relates to the technical field of pipeline detection, and particularly discloses pipeline interior detection equipment and a detection method. An adjusting mechanism is jointly installed between the inner walls of the two sides of the adjusting box, detection mechanisms are installed at the two ends of the adjusting box, and dredging mechanisms are installed on the opposite faces of the two detection mechanisms. The adjusting mechanism comprises a positive and negative screw rod, a second bevel gear, a moving frame and an adjusting frame, the positive and negative screw rod is installed between the inner walls of the two sides of the adjusting box through a bearing, and the second bevel gear is installed in the middle of the outer surface of the positive and negative screw rod; according to the invention, the positive and negative screw rods can drive the two moving frames on the positive and negative screw rods to move outwards together through meshing transmission between the conical teeth, so that the positions of the plurality of adjusting frames are adjusted to adapt to pipelines with different diameters, and therefore, the detection mechanism can always keep the central position in the pipelines with different diameters, and the detection accuracy is improved. The detection requirements of pipelines with different diameters are met, and the accuracy of the detection result is ensured.

The utility model discloses a high elasticity EVA foam material open mill, relates to open mill technical field, including mounting groove and shell, said mounting groove and shell are both set up U-shaped structure, and the mounting groove is fixedly connected in the shell, and the outside of mounting groove and the inside of shell form cavity; the two sides of the mounting groove are each fixedly connected with two sliding rails which are vertically and symmetrically distributed, and an adjusting sliding block is slidably connected between every two sliding rails. According to the high-elasticity EVA foaming material open mill, two linkage shafts are meshed with bevel teeth at the two ends of a linkage shaft at the bottom of a mounting groove through bevel teeth to rotate, so that the three linkage shafts are kept at the same rotating speed, and second lead screws are meshed with the linkage shafts through bevel teeth, so that the rotating speeds of the two second lead screws are kept consistent; further, the moving distance of the adjusting sliding block between the two sliding rails is kept consistent, and the situation that the two ends cannot move synchronously due to different stress of the two ends during operation of the main extrusion roller is prevented.

A tap extraction tool for extracting a broken tap from a workpiece using an accompanying impact driver. The tool features a tool body shaft with a drive end, and a working end situated distally thereof along a longitudinal axis. The working end has tapered teeth and intervening void spaces arranged around the axis. The tapered tooth geometry includes a narrowing of a circumferential tooth width to a pointed biting edge in a radially inward direction, and a narrowing of a radial tooth thickness in the longitudinally distal direction. Two inner faces of the working tooth convergently intersect at the biting edge, which angles outwardly away from the central longitudinal axis in the longitudinally distal direction. The circumferential tooth width also narrows in a radially inward direction, from two non-parallel and convergently angled outside edges of an outer circumferential surface of the tooth.

The invention relates to inner bevel gear machining, in particular to an inner bevel gear machining die and a machining forming method, and solves the problem that after machining is completed through an existing machining method, the strength of an inner bevel gear may become poor due to uneven distribution of internal stress. The inner bevel gear machining die comprises a guide die and an upper die coaxially arranged at the top of the guide die. A positioning protrusion used for being matched with a positioning groove in a workpiece to be machined is arranged at the bottom of the upper die. A guide circular truncated cone is arranged at the top of the guide die, and the small-diameter end of the guide circular truncated cone faces the upper die; a plurality of tooth pieces are arranged on the outer wall of the guiding circular truncated cone, the inner side faces of the tooth pieces are matched with the shape of the outer wall of the guiding circular truncated cone, each tooth piece corresponds to the position of an inner tooth groove of a workpiece to be machined, and outer teeth matched with the inner tooth grooves in the workpiece to be machined are arranged on the outer side faces of the tooth pieces; a reset piece is arranged on the outer side of the guide die in the circumferential direction, and the reset end is connected to the bottom of the tooth piece and used for pushing the tooth piece to move upwards and reset.

The invention discloses a spherical gear clamp and a robot for manufacturing a spherical gear. The clamp comprises a base, a first bevel gear, a second bevel gear, a profiling claw and a positioning block. The first bevel gear is rotationally installed in the base. The second bevel gear is rotationally installed on the base, meshed with the first bevel gear and provided with Archimedes spiral teeth. The bottoms of the profiling claws are meshed with the Archimedes spiral teeth, and the tops of the profiling claws are provided with clamping cambered surfaces. The first bevel gear rotates to drive the second bevel gear to rotate, so that the Archimedes spiral gear drives the profiling claw to move in the radial direction of the base, and the multiple clamping cambered surfaces are attached to and clamp the spherical surface of the spherical gear to achieve axial positioning. The bottom end of the positioning block is detachably installed on the base, and the top end of the positioning block can be matched with a positioning hole formed in the spherical gear to achieve circumferential positioning. The machining method has the technical effects of improving the machining precision, ensuring the gear meshing performance, prolonging the service life of the gear and adapting to machining of spherical gears of various specifications.

This invention discloses a design method for a tapered, unequal-clearance helical bevel gear for aero-engines, belonging to the technical field of aero-engine transmission systems. The method includes: Step 1, selecting the dimensions of the driving gear; Step 2, selecting the number of teeth z and the transverse module m. t Step 3: Determine the gear tooth width b; Step 4: Select the gear helix angle β. m Step 5: Select the gear helix direction; Step 6: Determine the gear pressure angle α. n Step 7: Determine the addendum coefficient and clearance coefficient c. * Step 8: Determine the displacement coefficient x; Step 9: Select the tangential displacement coefficient x t Step 10: Determine the tooth backlash of the gear pair; Step 11: Calculate the gear tooth parameters. This is done by selecting the addendum coefficient and clearance coefficient c. * The tooth structure parameters and meshing clearance of the tapered tooth unequal clearance spiral bevel gear pair are designed to increase the overlap ratio during gear meshing, improve the load-bearing capacity of the gear pair, and reduce the structural size and weight of the gear pair.

The present invention provides a fine blanking forming die and a conical tooth part. Among them, the fine blanking forming die includes: a female die, a first male die, and a jacking mechanism; a cavity communicating with the outside is formed inside the female die. When the first male die is closed with the female die, the first male die can cooperate with the cavity; the side wall of the cavity has a taper suitable for forming the conical teeth of the conical tooth part; the jacking mechanism extends into the cavity and jointly encloses a stamping forming space for the conical tooth part with the first male die and the inner side wall of the cavity. The fine blanking forming die of the present invention realizes the fine blanking of a toothed part with a taper. It provides stress during forming through the female die, the first male die, and the jacking mechanism, greatly improving the plasticity of the workpiece. Thus, it not only solves the problem of poor mechanical properties of powder metallurgy parts but also solves the problems of low production efficiency and high cost of machined parts.

The forward-pushing centrifugal flail knife comprises a knife bar, a supporting rod, a limiting groove, a blade, an opening mechanism and a linkage mechanism, the supporting rod is coaxially and rotatably connected to the interior of the knife bar, one end of the supporting rod is connected with an external supporting structure, and the limiting groove is formed in the side wall of the knife bar. The utility model has the beneficial effects that by arranging the opening mechanism and the linkage mechanism, the driving bevel gear ring is driven to rotate through the rotation of the cutter bar, the driven bevel gear is engaged and linked, the rack is driven to move through the rotation of the linkage gear, the fluted disc is driven to be engaged and linked through the adjusting rod, and the blade is driven to rotate and open; the blades are opened through a gear tooth groove structure, so that the situation that the blades cannot be opened due to insufficient centrifugal force or clamping connection at the blade connecting positions is effectively avoided; by means of sliding of the sliding block on the guide rod, after the blade rotates to the locking position, the linkage gear can slide on the sliding block, and tooth hitting caused by meshing with the rack is avoided.

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 invention relates to the technical field of assembly measuring tools, in particular to a steam turbine blade simulation assembly measuring tool which comprises a positioning disc set, a blade root clamping piece and a plurality of driving teeth. The positioning disc set comprises a rotating disc base, a threaded chain wheel, a tooth guide rod, a pull lug rod and a sliding sleeve piece, and bevel teeth and threads meshed with the driving teeth are arranged in the threaded chain wheel and used for driving the tooth guide rod to slide in the radial direction. The tooth guide rod drives the lug pulling rod to slide through the linkage plate, an inclined sliding groove and an inclined wedge face are arranged on the surface of the lug pulling rod, and the lug pulling rod is in sliding fit with a sliding guide block and a pulley on the inner side of the sliding sleeve piece to achieve clamping or loosening action. The blade root clamping piece comprises a fixed plate part, an elastic lug part and a blade root clamping lug, and the blade root clamping lug is arranged in a V shape. According to the invention, multi-point synchronous clamping and automatic loosening of the blade root of the blade are realized, the clamping force is uniform, the clamping precision is high, nondestructive fitting is realized, the operation is convenient and fast, and the precision and efficiency of assembling and measuring the blade of the steam turbine are obviously improved.

A bladeset is operationally connected to a hair clipper and includes a stationary blade and a moving blade configured for reciprocating laterally relative to the stationary blade. At least one of the stationary blade and the moving blade includes a base and a plurality of teeth extending from the base. The plurality of teeth includes a set of long teeth, each of the long teeth having a tip parallel to and spaced a first distance from the base defining a first cutting line; and a set of short teeth, each of the short teeth having a tip parallel to and spaced a second distance from the base defining a second cutting line spaced apart from the first cutting line. The first cutting line is farther from the base than the second cutting line.

The space three-dimensional cleaning device with the adjustable rotating speed is characterized in that a main shaft assembly is composed of a main shaft, a spray head and a center gear, and two water outlets which are staggered by 180 degrees are formed in the spray head; the main shaft assembly is rotationally installed on the shell assembly. The input pipe assembly and one end of the shell assembly can be in supporting fit in a relative rotation mode. Water delivery channels which are communicated with each other at an included angle of 90 degrees are arranged in the input pipe assembly and the main shaft assembly and are communicated with the two water outlets; a worm gear is arranged on the water pipe assembly; a worm part of the worm shaft is meshed with the worm gear, and a straight tooth part of the worm shaft is meshed with the sun gear; a first straight tooth part of the straight gear shaft is meshed with the central gear, and a second straight tooth part of the straight gear shaft is meshed with a straight tooth part of the bevel gear shaft; the speed adjusting assembly is installed at the other end of the shell assembly and meshed with the bevel tooth part on the bevel gear shaft through the tooth part of the final-stage bevel gear shaft. The industrial tank cleaning device meets the requirements of industrial tank cleaning for use safety, dead-corner-free cleaning, adjustable speed and high reliability.