75 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 a universal pipeline pressing device, which comprises a shell with an annular inner cavity, a pressure detection air nozzle hole, a pressure detection air nozzle, a pressure detection air nozzle, a pressure detection air nozzle and a pressure detection air nozzle, and is characterized in that the inner side surface of the shell is provided with a groove for a pipeline to insert; the rotating disc is rotationally arranged in the annular inner cavity, first conical teeth are arranged on the outer side face of the rotating disc, and first threaded teeth are arranged on the inner side face of the rotating disc; the plurality of adjusting pieces are provided with second conical teeth meshed with the first conical teeth; the multiple clamping jaws are arranged in the shell at intervals in a radial sliding mode; the pipelines with different diameters are inserted into the grooves, the adjusting pieces are rotated to enable the clamping jaws to clamp the pipelines, the ends of the pipelines are fixed into the grooves, at the moment, the pipelines are connected with the bottom walls of the grooves in a sealed mode, air is introduced into the pressure detection air tap holes, and pressurization testing is conducted on the interiors of the pipelines. And a large amount of preparation time is saved, purchase of pressing blind flanges is reduced, and the production cost and the pressing time are saved.

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 discloses a core auxiliary blade telescopic PDC (polycrystalline diamond compact) drill bit which comprises a drill bit base body, a containing cavity is formed in the center of the top of the drill bit base body, a high-strength alloy spring is arranged in the containing cavity, and a center blade is inserted into the containing cavity and arranged above the high-strength alloy spring. And a plurality of core conical teeth are uniformly distributed at the top of the central cutter wing at intervals. When the drill bit breaks rocks, the peripheral cutting teeth cut and destroy rocks on the outer ring of the shaft bottom, the center rocks at the center of the shaft bottom push the center blades into the containing cavities to form rock bosses, the hardness of the center rocks is reduced, the springs stop moving after being compressed to a certain degree, the core conical teeth plough and break the rocks, and the higher the hardness of the rocks is, the higher the formed rock bosses are; based on the drill bit, self-adaption and stable drilling speed can be achieved when the drill bit is used for drilling soft and hard stratums, and high drilling speed can be achieved when the drill bit is used for drilling hard stratums.

The utility model discloses a non-standard automatic belt drive walking module in the technical field of automation, which comprises a fixing plate, a first conical tooth is fixedly sleeved at one end of the surface of a connecting shaft, and a first speed reducing motor is fixedly mounted at the top of a fixing frame. The top end of the second conical tooth is fixedly connected with the bottom output end of the first gear motor, one side of the bottom of the second conical tooth is in meshed connection with one side of the first conical tooth, and the surface of the connecting shaft is fixedly sleeved with a first gear; through the linkage effect of a second conical tooth, a first conical tooth, a connecting shaft, a first gear and a second gear, a first gear motor operates to drive a connecting rod and a moving wheel to rotate, the linear moving effect of the device is achieved, and a second gear ring, a first gear ring, a connecting ring and other assemblies are driven to rotate through operation of a second gear motor; therefore, the horizontal angle of the moving wheel can be adjusted.

The utility model discloses a road construction marking device which comprises a bottom plate, a front wheel set is arranged on one side of the bottom of the bottom plate, a rear wheel set is arranged on the other side of the bottom of the bottom plate, a first synchronizing wheel is arranged in the middle of the front wheel set, and a first rotating shaft is installed on one side of the top of the bottom plate through a bearing seat. The utility model relates to the technical field of road construction, and the beneficial effects of the scheme are that: through the rear wheel set driving device to move, and in the moving process, through the cooperation transmission among the first conical tooth, the second conical tooth and the third conical tooth, the stirring shaft can be driven to rotate, so that the stirring shaft is driven to rotate; according to the road marking device, a cleaning assembly is arranged, so that paint in a material barrel of the device is prevented from being solidified and affecting the marking effect, during marking operation, the cleaning assembly can clean sand and dust on a road surface, then the marking operation can be completed through cooperation of a nozzle and a conveying pump, the ground at the marking position is dried while marking is conducted, and the marking effect is further improved.

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 meat ball extruding equipment, in particular to a beef ball extruding machine. Comprising an extruding machine, a stirring frame is installed on the surface of the upper end of the extruding machine, a stirring barrel is installed at the position, corresponding to the stirring frame, of the surface of the extruding machine, a forming device is arranged at the position, corresponding to the bottom end of the stirring barrel, of the surface of the extruding machine, and an adjusting device is arranged at the position, corresponding to the forming device, of the bottom end of the surface of the extruding machine. The adjusting device comprises two limiting frames and a bearing frame, one ends of the two limiting frames are both fixedly connected with the surface of the bottom end of the extruder, the bearing frame is located on the sides, close to each other, of the two limiting frames, the surfaces of the two sides of the bearing frame are both fixedly connected with fixing frames, and the sections of the inner walls of the fixing frames are in a conical tooth shape. The surface of the fixing frame is fixedly connected with a friction pad, and the surface of the limiting frame is fixedly connected with a connecting plate. The beef ball extruder provided by the utility model has the advantage that the extruded and formed beef balls can be conveniently carried.

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 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 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 discloses a feeding device of an agricultural machinery bearing unit inner diameter grinding machine, and relates to the field of bearings, the feeding device comprises a feeding pipe, one side of the feeding pipe is provided with two groups of third grooves, the third grooves are internally provided with first conical teeth, one side of each first conical tooth is fixedly provided with a first fixing rod, and the other side of each first conical tooth is fixedly provided with a second fixing rod. First conical teeth are fixed to the top of the first fixing rod, second conical teeth are connected to the outer surfaces of the first conical teeth in a meshed mode, a threaded rod is fixed to the top of the second conical teeth, and a threaded sleeve is connected to the outer surface of the threaded rod in a meshed mode. When the first conical teeth rotate, the second conical teeth are driven to rotate through meshing, when the second conical teeth rotate, the screws are driven to rotate, when the screws rotate, the screws move through meshing with the threaded sleeves, when the threaded sleeves move, the baffles are driven to move, and when the baffles move, the height of the feeding pipe is increased.

The utility model discloses a disengagement positioning detection device of a rotary table indexing mechanism, which comprises a working table, a transmission assembly and a fluted disc disengagement detection assembly, the transmission assembly is arranged on the working table and comprises a motor, a speed reducer, a bevel gear shaft and a bevel gear, the fluted disc disengagement detection assembly is arranged on the portion, on one side of the transmission assembly, of the workbench sliding base and comprises a detection support, a detection switch, a spring base, a connecting rod and a collision block. Transmission parts are simple in structure, small in number, high in positioning rigidity, high in repeated positioning precision and high in indexing precision, the indexing workbench is low in overall manufacturing cost, batch production can be achieved, the overall cost performance of a machine tool is improved, a deep groove ball bearing is additionally arranged on a connecting rod of the fluted disc disengagement detection assembly, the deep groove ball bearing makes contact with the end face of a gear ring, and the detection precision is improved. Therefore, the friction degree between the gear ring and the gear ring is reduced, the loss is reduced, and the service life is effectively prolonged.

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 utility model relates to the technical field of heat exchanger cleaning, and provides a heat exchanger cleaning device which is characterized in that a cleaning assembly is arranged above a bearing disc in a cleaning tank cavity, when a heat exchanger to be cleaned is placed at the top of the bearing disc, the heat exchanger placed at the top of the bearing disc is showered through a water tank and a spray head, and the heat exchanger is cleaned. Meanwhile, a motor can be started to enable the output end of the motor to drive a first rotating shaft and a first conical tooth to synchronously rotate, at the moment, a second conical tooth meshed with one side of the first conical tooth synchronously rotates along with the first conical tooth and drives a second rotating shaft and an L-shaped rod to rotate, and at the moment, the L-shaped rod located on the outer side of the heat exchanger to be cleaned and a cleaning and scraping rubber strip do surrounding motion; through the design, the problem that sanitation dead angles occur when the heat exchanger is cleaned can be avoided, and then the cleaning degree is greatly improved.

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 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 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.