53 results about "Conical teeth" patented technology

The invention discloses a straight tooth extrusion wheel for internal spline inverted conical teeth and a machining method for the internal spline inverted conical teeth, and belongs to the technical field of mechanical product machining. The method comprises the following steps: broaching a to-be-processed workpiece to form an internal spline straight tooth structure; the straight tooth structure of the internal spline is subjected to inverted conical tooth extrusion machining, and metal allowance generated by extrusion deformation synchronously flows to the tooth side area and the small-diameter area of the internal spline; a straight tooth extrusion tool matched with an inverted conical tooth extrusion tool is adopted, secondary extrusion machining is conducted on the straight tooth area of the internal spline, and metal allowance flowing to the tooth side area of the internal spline is completely transferred to the small-diameter area; and the small-diameter area of the internal spline is machined, a bulge structure formed by the transferred metal allowance is removed, and machining of the reverse taper teeth of the internal spline is completed. Secondary gear burnishing is used, the small-diameter allowance is removed through follow-up machining, and the problem that the machining cost of an original internal spline reverse taper gear is too high is solved.

The utility model relates to the technical field of feeding mechanisms, and discloses a feeding mechanism for a double-screw extruder, which comprises a feeding barrel, and a double-screw extruder main body is arranged on the lower side of the feeding barrel; the top of the feeding barrel communicates with a feeding pipe, and a stirring assembly is arranged at the top of the feeding barrel. The stirring assembly comprises a motor, a second rotating shaft and a discharging mechanism, a third conical tooth is fixed to the output shaft end of the motor, the output shaft of the motor drives the third conical tooth to rotate, the third conical tooth is in meshed connection with a first conical tooth and a second conical tooth, and the first conical tooth and the second conical tooth drive the first rotating shaft and the second rotating shaft to rotate; the first stirring blade and the second stirring blade rotate in opposite directions, so that raw materials can be more effectively scattered and uniformly mixed, shear force and dispersion force are continuously applied to the raw materials, adhesion and accumulation of the raw materials are effectively prevented, the flowability and machinability of the raw materials are kept, and the downtime caused by non-uniformity or blockage of the raw materials is shortened.

The utility model provides a cable bridge capable of being adjusted in a lifting mode, and belongs to the technical field of cable equipment, the cable bridge comprises a bridge body, fixing rods are arranged at four corners of the outer side of the bridge body, a fixing plate is fixedly installed at the top ends of the four fixing rods, threaded rods are rotatably connected to the interiors of the four fixing rods, and the threaded rods are fixedly connected to the bridge body. The top ends of the four threaded rods penetrate through the inner top walls of the four fixing rods correspondingly and extend into the fixing plate to be fixedly connected with driven conical teeth, and the upper sides of the four driven conical teeth are connected with driving conical teeth in an engaged mode correspondingly. And rotating shafts are arranged between the two driving conical teeth on the left side and between the two driving conical teeth on the right side, the rotating shafts are fixedly connected with the driving conical teeth, and a transmission assembly is arranged between the two rotating shafts. The cable bridge solves the problems that a traditional cable bridge is fixed in height, complex in installation and poor in adaptability.

The utility model relates to the technical field of eyedrop production, and provides an eyedrop production stirring device which comprises a tank body, the discharging pipe is fixedly connected to the bottom end of the tank body; the output end of the servo motor penetrates through the fixing frame and is fixedly connected with a main conical tooth through a coupler. The lower conical tooth is rotationally connected to the bottom end of the top cover, and the bottom end of the lower conical tooth is fixedly connected with a stirring barrel penetrating through the top cover; the upper conical tooth is rotationally connected to the inner top wall of the fixing frame, and the bottom end of the upper conical tooth is fixedly connected with a stirring rod extending out of the stirring barrel; the stirring blades are arranged on the surfaces of the first fixed seat and the second fixed seat at equal angles; through the arrangement of upper conical teeth and lower conical teeth, the stirring rod and the stirring barrel can coaxially rotate forwards and backwards, then materials in the tank body can be stirred forwards and backwards, materials at the bottom end in the tank body can be stirred, the materials can be stirred and mixed uniformly in the opposite direction, and the stirring and mixing efficiency of the eyedrops is improved.

The utility model relates to engineering technical field, especially adjustable building template support frame, the utility model discloses bottom plate, bottom plate rotation is connected with two -way screw rod, two -way screw rod screw connection has the sliding holder, the fixed pillar is fixedly connected with the sliding holder, and the fixed column rotation is connected with the long strip board, and the long strip board rotation is connected with the connecting column, and the connecting column fixed connection has the connecting seat, in the utility model, through setting bottom plate, two -way screw rod, sliding holder, long strip board, connecting seat, U -shaped frame, adjusting seat, guide rod, first conical tooth, transmission shaft, second conical tooth and carousel etc. Structure can adjust the support height of support plate to be applicable to the building template of different height to improve applicability, and cooperate and set the bolt column, the limit ring, the spring, the handle column and the limit groove, can limit the rotation of two -way screw rod to improve the support stability of device.

The invention provides a sampling object storage device, and relates to the field of storage devices, the sampling object storage device comprises a main storage tank body, the upper part of the main storage tank body is rotatably provided with an upper cover body, the inner side of the main storage tank body is provided with a middle stirring blade, the inner side of the main storage tank body is provided with an inner anticorrosion release box, the main storage tank body is internally provided with a floating piece, and the lower part of the main storage tank body is fixedly provided with a drainage hard pipe; an upper water wheel is fixed to the outer side of the upper portion of the upper screw pipe, connecting tooth blocks are arranged in the middle of the upper screw pipe in an annular array mode, the lower portion of the upper screw pipe is rotationally connected with a lower connecting column, the lower connecting column is fixedly connected with the bottom of the main storage tank body, and middle connecting bevel teeth are rotationally arranged on the upper portion of the lower connecting column. Liquid in the middle of the main storage tank body is drained outwards by the hard flow pipe to extract a test sample, so that the sampling is more uniform, and the problem of inaccurate detection result deviation caused by non-uniform urine from the upper layer of the sample storage container is solved.

The utility model provides a material belt tin soldering connection jig which comprises a base and an upper cover which are detachably connected, a first material belt and a second material belt which are arranged in an overlapped mode are arranged between the base and the upper cover, and positioning holes are formed in the first material belt and the second material belt. The base and / or the upper cover are / is provided with a plurality of conical teeth corresponding to the positioning holes, the upper cover is provided with a hollow welding window, and at least part of the overlapped portion of the first material belt and the second material belt is arranged in the welding window. A welding rod penetrates through the welding window to weld the first material belt and the second material belt of the overlapping part, so that the first material belt and the second material belt are of an integrated structure, and the length of the material belts is increased; wherein the connecting jig can be matched with a winding machine for use, and is arranged at a material belt feeding end of the winding machine; the whole process is simple and easy to operate, the cost is low, and the production efficiency of the machine can be improved only through the tin soldering bar and the material strip tin soldering connection jig.

The utility model relates to the technical field of silk dewatering, in particular to a silk centrifugal dewatering device which comprises a barrel, the barrel comprises a base, an outer barrel is arranged on the surface of the base, an inner barrel is movably connected to the inner side of the outer barrel, and a drainage pipe is fixedly connected to the bottom end of the outer barrel. A dewatering mechanism is arranged at the bottom end of the base and comprises a fixing block. A first rotating rod drives a first conical tooth to rotate, so that a second conical tooth and a third conical tooth can respectively drive a second rotating rod and a third rotating rod to rotate under the action of the first conical tooth, and then an outer barrel and an inner barrel can rotate in opposite directions; therefore, the combination between water and silk fibers can be better destroyed, the stress uniformity of the silk in the dehydration process is guaranteed, the water in the silk can be thrown out more quickly and can be better discharged through the drainage pipe on the outer cylinder, and the dehydration effect and efficiency can be improved.

The utility model provides a foldable electric push rod, and relates to the technical field of electric push rods. A hinge connecting hole is formed in the right side of the base, a mounting seat is mounted on the hinge connecting hole through a pin shaft, a driving motor is mounted on the base through a bolt, and a shell is mounted on the base through a bolt; according to the utility model, by drawing the locking shaft, the conical tooth structure on the locking shaft is separated from the conical tooth hole, the extension rod is foldable, the hinge design of the extension rod and the push rod and the reasonable folding structure, the overall occupied space can be obviously reduced, and space resources can be effectively saved in the transportation process or the storage process; the transportation cost and the storage requirement are reduced; through the design of a sliding groove in the inner wall of the shell and a matching block at the lower end of the push rod fixing base, linear guidance of the push rod in the moving process is guaranteed, meanwhile, the lubricating ring is matched, friction resistance is further reduced, moving smoothness and efficiency are improved, part abrasion is reduced, and the service life is prolonged.

The utility model relates to the technical field of mold core machining, in particular to a fixing device for mold core machining, which comprises a workbench, a clamping device is arranged at the center end of the workbench, a placing device is arranged at the top of the workbench, and the clamping device comprises a motor, a screw rod, conical teeth, a threaded block, a clamping rod, a clamping cushion and a sliding rail. The motor is fixedly installed on the outer wall of the workbench, the lead screw is rotatably installed on the inner wall of the workbench, the conical teeth are fixedly installed on the outer wall of the center end of the lead screw, the threaded block is connected to the outer wall of the lead screw in a threaded mode, and the clamping rod is fixedly installed on the top of the threaded block. By means of synchronous clamping, it can be guaranteed that the annular mold core is evenly pressed and supported in the machining or operating process, the machining precision and stability are improved, and the deformation or damage risk caused by uneven stress is reduced.

The invention relates to the field of valves, in particular to a valve seat rotatable ball valve which comprises a valve body, rotating grooves are symmetrically formed in the valve body, the two rotating grooves are symmetrically located on the two sides of a valve ball, and a valve seat is arranged in each rotating groove; each valve seat comprises a body, a conical gear ring is fixedly connected to the end face, close to a port of the valve body, of each body, conical teeth are meshed with one side of each conical gear ring, a rotating shaft is fixedly connected to the upper end face of each conical tooth, and the rotating shafts upwards penetrate through the outside of the valve body and are fixedly connected with a second hand wheel. Compared with the prior art, rotation of the valve seat can be achieved through meshing of the conical teeth and the conical tooth ring, the structure is simple, execution can be stably conducted in the complex medium conveying environment, the ball valve does not need to be detached from a pipeline system, the ball valve does not need to be closed, and a second hand wheel does not need to be rotated in the re-operation mode, operation steps are simple, and operation efficiency is high. And moreover, the influence on medium conveying of the pipeline system can be reduced, and the pause time of equipment or devices connected with the pipeline system is shortened.

The utility model discloses an excavator antiskid track shoe, and the device includes: track shoe body, be equipped with grid groove on the track shoe body, all be equipped with conical tooth in the complete quadrilateral area surrounded by the grid groove, the track shoe body includes base layer and antiskid layer, the grid groove and conical tooth all place on the antiskid layer surface. The utility model has the advantages that: the grid groove set up on the antiskid layer surface of track shoe body and the conical tooth in the quadrilateral area surrounded by the grid groove greatly increase the contact area and friction force between track shoe and ground. In the complex terrain such as muddy, soft or ice and snow cover, the conical tooth can penetrate into the ground, and the grid groove can further hinder the relative sliding between the track shoe and the ground, effectively solve the problem that the existing track shoe is insufficient in antiskid performance and easy to slip in these harsh environments, thereby improve the stability and operation efficiency of the excavator walking, reduce the energy consumption increase caused by the slip.

The utility model relates to the field of construction grooving machines, and discloses a grooving machine for open nickel ore construction, which comprises a liquid storage box body, a cutting shell is fixedly mounted on the left side of the liquid storage box body, a cutting blade is arranged in the cutting shell, and two rectangular grooves are symmetrically formed in the inner side wall of the cutting shell. Rectangular plates are inserted into the two rectangular grooves correspondingly, a first bearing is fixedly installed on one side of each rectangular plate, a worker starts a motor, the motor runs to drive a second conical tooth to start to rotate, a first conical tooth is driven by the second conical tooth to synchronously rotate, and then a connecting shaft, a rotating shaft and a first cutting blade are driven to rotate together; therefore, the cutting blade can smoothly carry out cutting slotting operation on the ground, and then a worker starts the electric push to push the connecting support rod and the cutting blade to further descend, so that the slotting depth of nickel ore construction can be flexibly and accurately controlled to meet slotting depth standards of different construction stages and engineering requirements.

The invention discloses a toothbrush head which comprises a bristle planting head, a supporting assembly and a brush handle. A power part is arranged in the brush handle, the power part is connected with the flocking head, and the power part is used for controlling the flocking head to rotate in the supporting assembly; the flocking head comprises a flocking part, a transmission shaft and a driven part, one end of the transmission shaft is fixedly connected with the flocking part, and the other end of the transmission shaft is fixedly connected with the driven part; the driven part comprises a driven rotating piece, the power part comprises a driving rotating piece, the driven rotating piece and the driving rotating piece are both of a conical tooth structure, the driven rotating piece and the driving rotating piece are connected in an engaged mode and used for transmitting power of the power part to the driven part in a bevel gear transmission mode, and the supporting assembly is provided with a notch which is used for a transmission shaft to pass through. The transmission shaft is clamped into the supporting assembly and is rotationally connected with the supporting assembly; the first end face of the supporting assembly abuts against the bristle planting part, the second end face of the supporting assembly abuts against the driven part, the supporting assembly is fixedly connected with one end of the brush handle, and the brush has the advantages of being simple in assembly structure, high in transmission efficiency and low in noise.

The invention relates to the field of petroleum and natural gas development, and discloses a micro coring PDC drill bit and a micro core multi-stage coring method.The micro coring PDC drill bit comprises a drill bit body and a coring drill bit body, the drill bit body is provided with a containing cavity and a plurality of stepped blades, and the stepped blades are used for cutting rocks and forming rock columns; the coring drill bit is connected to the drill bit body, a coring hole is formed in the middle of the coring drill bit, cutting teeth and conical teeth are arranged in the circumferential direction of the coring hole at intervals, the cutting teeth are used for cutting a rock column into a micro core column, and the conical teeth are used for cutting a pre-breaking mark on the upper portion of the micro core column; an impact flow channel and a return flow channel are further arranged in the drill bit body, an impact nozzle is installed in the impact flow channel, high-pressure drilling fluid is jetted at the impact nozzle by adjusting the pulse frequency of the ground pump so that the micro core column can be fractured, and the return flow channel is used for transporting the fractured micro core. Through multi-stage cutting of the stepped blades and the coring bit, a pre-breaking mark is formed, directional breaking is conducted in combination with the impact flow channel, and the structural integrity of the micro core is guaranteed.

The utility model discloses a baking raw material stirring uniform sterilization device which comprises a base, the upper surface of the base is fixedly connected with two L-shaped fixing columns, the opposite ends of the two L-shaped fixing columns are jointly and fixedly connected with a stirring tank, and the interior of the stirring tank is rotationally connected with a rotating rod; a rotating column is fixedly connected to the bottom of the rotating rod, and four turning plates are fixedly connected to the rotating column. By arranging the rotating column, the chain wheel, the second conical tooth, the chain, the shifting column, the sliding rod, the moving column, the moving plate, the rotating ring, the sliding column, the stirring plate and the like, the first conical tooth drives the rotating column to rotate through the second conical tooth, the rotating column drives the chain to rotate through the chain wheel, and the chain drives the moving column to move through the shifting column; the moving column drives the moving plate to move through the sliding rod, and the moving plate drives the sliding column to move through the rotating ring, so that the raw materials can be turned up and down while the sliding column drives the stirring plate to stir, and the stirring efficiency is improved.

The utility model relates to the technical field of fixing frames, in particular to a rabbit leg fixing frame which comprises a tray, positioning plates are symmetrically arranged at the center of the upper surface of the tray, movable plates are arranged in trapezoid grooves, clamping seats are arranged on the front end faces of the movable plates close to the outer ends, sleeve columns are symmetrically arranged on the clamping seats, a binding belt is arranged on one of the sleeve columns, and the other of the sleeve columns is provided with a fixing belt. Second conical teeth are symmetrically arranged on the first conical teeth, the second conical teeth are provided with screws installed in the trapezoid grooves in an inserted mode, one side face of the fixing base is provided with a second thorn face hook-and-loop fastener, and the other end face of the fixing base is provided with a second rough face hook-and-loop fastener. According to the rabbit leg fixing frame, under the cooperation of an adjusting rod with a screwing handle, the adjusting rod is in threaded connection with one sliding plate, the distance between the positioning plates is adjusted, under the cooperation of a first conical tooth and a second conical tooth, the two movable plates located on the same horizontal plane move in the opposite directions, and the distance between the two movable plates is adjusted. And the rabbit body is fixed under the cooperation of the second hair surface magic tape and the second thorn surface magic tape.

The utility model relates to the technical field of rabbit fixing frames, in particular to an adjustable rabbit experiment fixing frame which comprises a base, a fixing table is arranged at the top of the base, movable plates are arranged on the two sides of the fixing table, clamping plates are arranged on the outer walls of the movable plates, a groove is formed in the middle of the fixing table, a rotating assembly is arranged in the groove, and positioning plates are symmetrically arranged on the two sides of the fixing table. Binding assemblies are arranged on the movable plates. According to the adjustable rabbit experiment fixing frame, the base is arranged to be matched with the fixing table, so that the overall independent placement stability is improved, a movable plate and the fixing table are in insertion fit through a positioning plate and a positioning groove, the moving stability is improved, under cooperation of a rotating assembly, a crank rotates to drive a main shaft to rotate, and under cooperation of a first conical tooth and a second conical tooth, the rotating assembly rotates to drive the main shaft to rotate. According to the clamping device, the threaded rod rotates, clamping cooperation of rabbits of different sizes is achieved, and under cooperation of the binding assembly, binding and fixing of rabbit bodies are achieved through bonding cooperation of hair-side hook-and-loop fasteners and thorn-side hook-and-loop fasteners.

The utility model relates to the technical field of enzyme production, in particular to an enzyme production device for soil remediation, which comprises a fermentation tank, a feed port is fixedly connected to the inner side of the fermentation tank, a discharge port is fixedly connected to the bottom end of the fermentation tank, and an air inlet pipe is fixedly connected to the surface of the fermentation tank. A second motor runs to drive a rotating rod to rotate, transmission of a second conical tooth and a reciprocating screw rod by a first conical tooth can be realized, and then a connecting block can drive a fixed frame to reciprocate in the vertical direction under the action of the reciprocating screw rod, so that a stirring shaft can rotate in the process of driving a stirring rod to rotate; the enzyme stirring device can vertically move along with the stirring rod, so that enzyme at different positions can be conveniently stirred through the stirring rod, the stirring range can be expanded, the mixing uniformity and the fermentation sufficiency of the enzyme can be conveniently promoted, the production quality of the enzyme can be better guaranteed, and the soil can be better repaired.

The present invention provides a method for optimizing the structure of a conical PDC tooth, which includes: establishing a contact stiffness calculation model based on formation parameters and the apex parameters of the conical PDC tooth to calculate the contact stiffness; establishing an apex radius calculation model based on formation parameters, construction parameters, bit parameters, and contact stiffness to calculate the apex radius. The present invention has the following beneficial effects: It can provide scientific guidance for the optimization of conical PDC teeth, can select a suitable conical tooth structure in combination with the formation conditions, and can avoid the situation that the conical PDC tooth cannot penetrate in hard formations or penetrates too deep in plastic formations due to inappropriate structure. By optimizing the conical PDC teeth through this method, it is expected to improve the mechanical drilling rate of the bit with conical PDC teeth in extremely hard formations and extend the service life of the bit.

The embodiment of the present disclosure provides an acquisition method of a dental retainer, and relates to the technical field of retainer manufacturing, and comprises the following steps: generating a digital three-dimensional model of a patient's dental arch, and identifying individual characteristics such as maxillary or protruding teeth, presence of deciduous teeth or conical teeth, and occlusal contact points, and the edge height and / or occlusal area thickness of the retainer three-dimensional digital model can be correspondingly personalized adjusted, so as to be 3D printed to obtain a dental retainer. Since the whole process is digitalized, a plaster model is not needed, thereby eliminating the step of trimming and grinding. Since dust pollution is completely eliminated, the manufacturing time is shortened, and the breakage and rework caused by excessive cutting are avoided, and the retainer matched with different needs of patients can be manufactured more efficiently.

This utility model discloses a multi-layer stirred liquid fermenter, including a stirred tank and a stirring unit. The stirred tank has at least three fermentation chambers, each with a fixed sleeve. The stirring unit is located inside the stirred tank and has a vertically rotating shaft inside. Stirring blades (a) are arranged on the side of the rotating shaft. A rotating ring is nested outside the rotating shaft, and stirring blades (b) are arranged on the side of the rotating ring. A conical tooth (b) is vertically rotating inside the fixed sleeve. The conical tooth (b) meshes with the rotating shaft and the rotating ring. By incorporating the stirring unit, this utility model allows the rotating shaft to rotate via a motor, causing the conical tooth (b) to rotate. The conical tooth (b) then drives the rotating ring to rotate in the opposite direction, thereby creating a counter-stirring effect through the stirring blades (a and b), improving the mixing uniformity and reaction efficiency of the fermentation broth.

The utility model relates to the technical field of push rod structures of steel pushers, and discloses a novel push rod structure of a steel pusher, which comprises a push rod cylinder and a plug, the plug is in threaded connection with the push rod cylinder, a round hole is arranged outside the push rod cylinder, a heat dissipation mechanism is assembled inside the push rod cylinder and comprises a bent pipe, the left side of the bent pipe is communicated with a short pipe, and the short pipe is communicated with a push rod. The interior of the short pipe is connected with a rotating pipe through a bearing, the rotating pipe is sleeved with a first conical tooth, the bottom of the first conical tooth is in meshed connection with a second conical tooth, the bottom of the second conical tooth is connected with a motor, a bent groove is formed in the right side of the interior of the rotating pipe and communicates with the bent pipe, and an L-shaped groove is formed in the left side of the interior of the rotating pipe. According to the novel push rod structure of the steel pusher, the service life of the push rod of the steel pusher is greatly prolonged, meanwhile, the rotating pipe can be switched into the slotted pipe, then different flowing modes of cooling water are provided, and cooling of the push rod barrel in different modes is achieved.

The utility model discloses a water body conical tooth-shaped solid waste separation device which comprises a culture pond, a control valve, a sewage pump, a water tank, a solid waste separator, biochemical cotton, a framework, a sedimentation pond, a sewage pipe, a sewage pump water inlet pipe, a sewage pump water outlet pipe, a water return pipe, a blow-off pipe, a dredging pipe, a flushing device, a clean water pump, a clean water bin and a blow-off valve. The sewage pump is communicated with the culture pond through the sewage pipe, the left end of the control valve is communicated with the sewage pump, the right end of the control valve is communicated with the clear water bin, the sewage pump is communicated with the water tank, the water tank is arranged in an inner cavity of a conical tooth filter cartridge of the solid waste separator, and the flushing device is arranged over the conical filter cartridge. The inclined tooth structure of the conical tooth filter cartridge increases the inclination and the filtering area of the filter screen, so that the separation effect and the water permeability are better, the water consumption is low, the filtering efficiency is high, and the bearing performance is good; the anti-blocking performance of the water tank is better than that of the discharge pipe During cleaning, the control valve, the sewage pump, the water tank and related pipelines are correspondingly cleaned.

The utility model discloses an efficient energy-saving oil-immersed pump station device for an elevator hydraulic system, which comprises a pump station body, the lower surface of the pump station body is fixedly connected with a base box, the left surface of the base box is fixedly connected with a motor, the output end of the motor is fixedly connected with a first bidirectional lead screw, and the output end of the first bidirectional lead screw is fixedly connected with a second bidirectional lead screw. And the outer surface of the first bidirectional lead screw is in threaded connection with a fixed seat. Through the arrangement of structures such as a base box, a motor, a first bidirectional lead screw, a fixed seat, a connecting rod, a connecting seat, a mounting seat, a roller, a first conical tooth, a connecting shaft, a second conical tooth, a third conical tooth, a second bidirectional lead screw and a fourth conical tooth, the roller can be stored when not used; when the oil-immersed pump station needs to be moved, the rollers can be prevented from accidentally stretching out when not used while the oil-immersed pump station is normally placed, so that the accidental risk is reduced, the working safety is improved, and the rollers can be quickly unfolded when the oil-immersed pump station needs to be moved, so that the moving efficiency is remarkably improved, and the labor and time cost is reduced.

The invention relates to the technical field of server heat dissipation, and discloses a server heat dissipation fan mounting seat which comprises a cross rod, the cross rod is slidably connected to the middle of the bottom end of the inner side of a heat dissipation fan, a cross plate is rotatably connected to the bottom of the inner side of the heat dissipation fan, and spring telescopic plates are rotatably connected to the periphery of the interior of the cross plate. The outer side of the spring telescopic plate is rotationally connected with a hollow block, the hollow block is slidably connected with the cooling fan, the inner side of the hollow block is rotationally connected with a conical fluted disc, the inner side of the conical fluted disc is slidably connected with a conical tooth rod, and the top of the inner side of the hollow block is rotationally connected with a conical gear. By rotating a cross rod, a cross plate is linked with a spring telescopic plate, the telescopic plate pushes and adjusts the position of a hollow block, then the cross rod is inserted into a conical tooth ring to rotate, a conical tooth rod and a conical tooth disc are driven to rotate, a threaded column is fixedly connected with a cooling fan and a hollow base through threads, and cooling fans of different specifications are rapidly connected.

The utility model belongs to the technical field of bullet train seats, and particularly relates to a bullet train seat cup stand and a bullet train seat, the bullet train seat comprises a bullet train seat main body, the inner bottom of the bullet train seat main body is fixedly connected with two fixing supports, the two fixing supports are fixedly connected with a cup stand box together, the upper surface of the cup stand box is provided with two cup grooves, and the cup grooves are fixedly connected with the cup stand box. By arranging the servo motor, the rotating rod, the first conical tooth, the threaded rod, the second conical tooth, the movable plate, the supporting plate and the like, the servo motor drives the rotating rod to rotate, the rotating rod drives the first conical tooth to rotate, the first conical tooth is driven to rotate, the second conical tooth is driven to rotate, and the clamping connection grooves are formed in the clamping connection grooves. The first conical tooth drives the threaded rod to rotate through the second conical tooth, the threaded rod drives the movable plate to move, the movable plate drives the supporting plate to move downwards to the bottom through the damper, the water cup retracts into the cup groove, then the cup groove is covered with the cover plate, a passenger can conveniently place the arm, and the comfort degree is improved.

The invention relates to the technical field of boilers, and discloses a boiler furnace air outlet device which comprises a box body and an exhaust pipe, the exhaust pipe is arranged in an inner cavity of the box body, a driving mechanism is arranged at the upper end of the box body and comprises a transverse shaft, worms are connected to the two sides of the transverse shaft, worm wheels are connected to the exteriors of the worms in a meshed mode, and vertical shafts are connected to the bottoms of the worm wheels. The bottom of the vertical shaft is connected with a first conical tooth, the exterior of the first conical tooth is in meshed connection with a second conical tooth, the second conical tooth is arranged outside the exhaust pipe, and the exterior of the worm is connected with a motor; through the transmission structure, the rotating motion of the motor is converted into the rotation of the exhaust pipe step by step. According to the boiler furnace air outlet device, the rotating exhaust pipe and a static water source move relatively, the heat exchange efficiency is greatly improved, the water source outside the pipe can be in a flowing state, the local water temperature is prevented from being too high, the temperature increasing uniformity of the water source is improved, and the waste heat utilization value is fully played.

The utility model discloses a flange electric heater safe to use, which comprises a heating cylinder, the heating cylinder is connected with a heat insulation mechanism, the heat insulation mechanism comprises two heat insulation covers and a connecting cover, the connecting cover is movably connected with the heat insulation covers, the outer side of the heating cylinder is connected with two supporting plates, the heat insulation covers are connected with the supporting plates in a sliding manner, and the connecting cover is connected with the supporting plates. The connecting cover is connected with a driving mechanism used for driving the two heat insulation covers to be close to or away from each other, the driving mechanism comprises two threaded seats, a rotating column, conical teeth, a fluted disc and a rotating column, the rotating column is used for driving the two threaded seats to be close to or away from each other, and the threaded seats are connected to the tops of the corresponding heat insulation covers; and the rotating column is connected with a positioning mechanism for positioning the rotating column. The heat insulation cover and the connecting cover can prevent people from being scalded when touching the heating cylinder by mistake, use is safe and reliable, meanwhile, the length of the heat insulation mechanism is adjustable so as to meet protection of heating cylinders of different sizes, and applicability is high.

The utility model relates to the technical field of wrenches, in particular to a driving hydraulic torque wrench which comprises a shell, the shell comprises a wrench body, the inner side of the wrench body is movably connected with a hexagonal sleeve, and a hydraulic connector is arranged on the surface of the wrench body. And an adjusting mechanism is arranged on the inner side of the hexagonal sleeve. By rotating the rotating rod, the second conical teeth can drive the screw rod to rotate under the action of the first conical teeth, so that the moving block can drive the connecting plates to move, the distance between the connecting plates is changed, and the connecting plates can adapt to bolts or nuts of different sizes and specifications to be adjusted; the hexagonal sleeve is arranged on the wrench body, so that bolts or nuts of different sizes can be fixed after entering the hexagonal sleeve, the bolts or the nuts are not prone to loosening or falling in the hexagonal sleeve, the screwing effect and stability of the bolts or the nuts can be guaranteed, and the using flexibility and applicability of the wrench body can be improved.