56results about How to "Avoid hard friction" patented technology

The invention discloses a cutting device for a glass table board of an integrated cooker. The cutting device comprises a workbench, a cutting mechanism and clamping devices, a movable seat is arrangedbelow the workbench, a mounting plate is arranged between the workbench and the movable seat, a rotating motor, a driven wheel and a rotating screw rod are arranged on the mounting plate, the rotating motor drives the driven wheel to rotate through a belt wheel, the driven wheel drives the rotating screw rod to rotate, the cutting mechanism is located above the workbench, and the clamping devicescomprise supporting rods and clamping pressing plates. A cutting method comprises the following steps that (1) a to-be-cut raw material is fed; (2) positioning and clamping are carried out on the glass plate raw material; (3) the position of the cutting mechanism is adjusted; and (4) cutting machining is carried out. According to the cutting device, the overall structural design is ingenious andreasonable, omni-directional adjustment of the position of the cutting mechanism can be realized, and accurate positioning between the cutting mechanism and the to-be-cut position is ensured; and meanwhile, the clamping devices are designed so that the to-be-cut raw material can be clamped and fixed, and the application range is wide.

The invention relates to an automobile painting overturn frame. It solves the problems of unreasonable design and the like in the prior art. The car paint overturning frame includes two symmetrically arranged main supports and the two main supports are connected by connecting rods, and each main support is respectively provided with a vertical support tube and a vertical support tube whose lower end is inserted into the vertical support tube. The lifting column is provided with a rolling contact structure between the lifting column and the vertical support tube, and the upper end of each lifting column is respectively provided with a horizontal fixed tube and the lifting column or the fixed tube is connected with the lifting drive mechanism, The paint spray stand also includes two symmetrically arranged lifting frames, each of which is connected with a rotating shaft inserted in the fixed pipe and capable of rotating relative to the fixed pipe, and is provided between the rotating shaft and the fixed pipe. A locking mechanism capable of locking the rotating shaft and the fixed tube in the circumferential direction when the rotating shaft rotates to a set position. The advantage of the present invention is that it can improve the smoothness of lifting.

The invention discloses a stand pole and floating bridge adjusting structure, which comprises a stand pole and a floating bridge, wherein the stand pole is arranged at the bottom of a sea and exposes out of the surface of the sea; the floating bridge floats on the surface of the sea; a positioning ring arranged on the periphery of the stand pole is fixed on the floating bridge; and the positioning ring is provided with a buffer wheel which can slide along the stand pole up and down. The stand pole and floating bridge adjusting structure is characterized in that an axial positioning groove is arranged outside the stand pole; a buffer sheet is wedged into the positioning groove; and the buffer wheel slides on the buffer sheet up and down. The invention also discloses a floating dock. The stand pole and floating bridge adjusting structure and the floating dock provided by the invention have the advantages that the buffer sheet wedged into the stand pole positioning groove can be used for absorbing energy that sea tides are bad for the floating bridge; when in ebb and flow of the tides, a pulley wheel arranged on the positioning ring can slide on the buffer sheet, so that hard impact and hard friction can be prevented from being generated; and no matter the ebb or the flow of the tides, a step plane of a channel connected with the floating dock always keeps parallel to a horizontal plane nearly, so that potential safety hazards of personnel working on the floating dock are reduced.

The invention discloses a moving mechanism of an automatic steel bar bender, which comprises a rail rack, a bender box moving along the rail rack, a driving gear arranged on the inner side of the bender box and engaged with the rail rack and a travel driving mechanism for driving the driving gear to rotate, wherein the driving gear is connected with one end of a universal coupling, the other end of the universal coupling is connected with the output end of a conveyer belt transmission mechanism, and the input end of the conveyer belt transmission mechanism is connected with a power driving unit. The invention has the beneficial effects of overcoming defects of the prior art, using the universal coupling and the conveyer belt transmission mechanism as moving mechanisms and has the advantages of light weight, low cost, simple structure, convenient maintenance, stable working, energy consumption saving, and the like in comparison with the prior art. A buffering mechanism is used for avoiding hard friction between the rack and the gear and overcoming the travel bumping of the automatic steel bar bender, and thus, the bent steel bar has good quality.

The invention discloses a linear flame welding machine. The linear flame welding machine comprises a feeding mechanism, a welding mechanism and a discharging mechanism; the feeding mechanism comprisesa feeding table, a storing table and a pushing device; the welding mechanism comprises a welding room supporting frame and welding assemblies; each welding assembly comprises a welding head set, a longitudinal adjusting assembly and a transverse adjusting assembly; and the discharging mechanism comprises a discharging table, a material conveying device and a material table. A welding method comprises the following steps of (1) feeding of welded workpieces; (2) adjustment of the height of the welding assemblies; (3) adjustment of the position of the welding head sets; (4) welding; and (5) discharging of the welded workpieces. The linear flame welding machine is ingenious and reasonable in structural design, and convenient and rapid to use and operate, achieves automatic treatment operationof workpiece feeding and discharging through the feeding mechanism and the discharging mechanism, relieves labor intensity, improves operation safety performance, can conduct welding on the workpieces at the same time through design of the multiple welding assemblies, effectively increases the welding rate, and improves the work efficiency.

The invention discloses an adjustable laser instrument bracket, and belongs to the technical field of ship manufacturing tools. The bracket comprises a support frame for mounting a laser instrument, the support frame comprises two horizontally-arranged horizontal supports, two vertical supports are fixedly connected between the two horizontal supports, and two direction guiding plates capable of vertically moving up and down and a height adjusting assembly for driving the direction guiding plates to move are horizontally arranged at one side of the vertical supports; a sliding plate capable ofhorizontally moving leftwards and rightwards is mounted between the two direction guiding plates, and the sliding plate is provided with a horizontal adjusting assembly for driving the sliding plateto move; a supporting cylinder is welded and fixed to the sliding plate, and a supporting cylinder is welded and fixed to the sliding plate, a laser instrument seat cylinder for fixing the laser instrument is arranged in the cavity of the supporting cylinder, the supporting cylinder is provided with an angle adjusting assembly, and the angle adjusting assembly comprises a first outer angle bolt and a first inner angle bolt which are used for adjusting the rotation angle of a laser beam in an up-and-down direction, and further comprises a second outer angle bolt and a second inner angle bolt which are used for adjusting the rotation angle of the laser beam in a left-and-right direction. The adjustable laser instrument bracket has the advantages of provision of multi-angle adjustment, and increase of the precision.

The invention discloses an isolator belt pulley. The isolator belt pulley comprises a belt pulley main shaft, a sleeve, a belt pulley outer ring, a spring type seal ring and a profile roller one-way retainer, wherein two ends of the profile roller one-way retainer are respectively provided with a sealed carrying bearing and a carrying bearing. The belt pulley is characterized in that: a group of profile rollers are uniformly embedded in the profile roller one-way retainer through springs. According to the isolator belt pulley, hard friction of a traditional gear type thrust plate is canceled, the profile roller one-way retainer is adopted, and the profile rollers and the belt pulley main shaft form flexible friction to achieve the aim of one way by utilizing the change of contact angles between cambered surfaces of internal surfaces of the profile rollers and the belt pulley main shaft when relative rotating speed between the belt pulley outer ring and the belt pulley main shaft changes, so that the hard friction inside the belt pulley is completely avoided, noise is reduced, and the service life is prolonged; and he sealed carrying bearing and the spring type seal ring are adopted, so that dust is prevented from entering, and the failure rate is reduced.

The invention discloses a quick escape chest, which comprises a chest body and storage compartments arranged in the chest body, an escape compartment and a lifesaving compartment are respectively arranged in the lower part of the chest body, the lifesaving compartment comprises an internal safe base with slide grooves, the safe base comprises a sliding seat which can slide in the slide grooves, a spring which is connected with the chest body is arranged on the safe base, two fixed supports are arranged on the safe base, a rope reel is arranged on a rotary shaft arranged between the two fixed supports, the rope reel comprises a safety rope and a clasp arranged on the safety rope, and the escape compartment comprises an internal safe escape cage. The quick escape chest is structurally simple, and is easy to operate, people can effectively escape by utilizing a window under a high-rise environment, moreover, the occurrence of the dropping problem can be further prevented, and thereby life safety is further ensured.

The invention discloses a stacker-reclaimer scraper chain full-automatic lubricating system and a working method thereof, and belongs to the technical field of lubricating systems. The system comprises a lubricating oil pump connected with a lubricating oil station; the lubricating oil pump is connected with a one-way valve; the one-way valve is connected with an overflow valve and an electromagnetic reversing valve; the electromagnetic reversing valve, an oil filter and a throttling valve are connected in sequence; the throttling valve is connected with a progressive distributor; the progressive distributor is connected with an oil-gas mixer; and the oil-gas mixer is connected with a lubricating pipeline, and is connected with an air compressor or a compressed air source. When scraper chain joints are lubricated, oil layers are formed between scraper chain rollers and chain box wear preventing plates to prevent hard friction between the chain rollers and the chain box wear preventingplates, so that the service life of scraper chains and chain boxes is prolonged, the operation noise is reduced, and electric energy is saved. The system is stable in operation, excellent in lubricating effect, high in season adaptability, low in environmental pollution and low in failure rate, and reduces the labor intensity of maintainers.

The invention discloses an intelligent automatic basket charging device for fungus bags. The device comprises a control system, a conveying system, a guide rail mechanism, a gripper mechanism and a bag supporting mechanism. A two-row guide rail structure is adopted, an active sliding rail is arranged on the upper row, a passive sliding rail is arranged on the lower row, and stable operation and accurate positioning of a gripper device are achieved. A fungus bag gripper is provided with a guide shaft, finger grippers are provided with finger gripper rubber pads, hard contact between the gripperand the fungus bags is avoided, microholes are avoided, and infection by bacteria is avoided. A fungus bag supporting plate of a bag supporting device can move when resistance is increased, and microholes produced by large resistance and hard friction are avoided.

The invention discloses a high-speed intelligent band sawing machine. The high-speed intelligent band sawing machine comprises a bed table, a saw frame, a tensioning detection device, a saw back pressure feedback device and a servo lifting driving system, wherein the bed table is used for containing, clamping and transporting materials. the saw frame is arranged above the bed table, the saw frameis rotatably connected with a driving wheel and a driven wheel which are driven by a main servo motor, and the driving wheel and the driven wheel are sleeved with a saw band; the tensioning detectiondevice is used for detecting and adjusting the tensioning force of the saw band; the saw back pressure feedback device is used for detecting the back pressure of the saw band; and the servo lifting driving system controls the lifting speed of the saw frame according to the back pressure of the saw band and the feedback value of the output torque of the main servo motor, and controls the rotating speed of the main servo motor according to the feedback value of the lifting speed of the saw frame. According to the high-speed intelligent band sawing machine, the feeding speed is controlled throughdouble feedback, the sawing speed is adjusted through the feeding speed, closed-loop vector control is formed, the sawing efficiency is optimized, and the service life of the saw band is prolonged.

The invention discloses a device and method for enabling a rotor to penetrate into an exhaust end. The device comprises a manipulator and a grabbing mechanism installed at the tail end of the manipulator; the grabbing mechanism is used for grabbing an exhaust end seat; and the device also comprises a suspension workbench and a meshing driving mechanism. The meshing driving mechanism is placed on the suspension workbench; and the rotor comprises a male rotor and a female rotor which are meshed with each other. According to the device for enabling rotor to penetrate into the exhaust end providedby the invention, the male rotor and the female rotor are engaged and assembled in the mode that the male rotor and the female rotor get close to each other and rotate relatively at the same time through the meshing driving mechanism, the engagement process stability is good, collision does not exist, assembly damage is effectively reduced, and the assembly efficiency is improved.

The invention relates to a golf club swinging trainer. The golf club swinging trainer comprises a golf club 1 with a rotating roller sleeve 2, a club swinging rail, a supporting rod 7, two supports 12and a base 13; the club swinging rail comprises an arc rail 3 and a steering sliding rail 4, a rail separating fixating member 6 is arranged at the right portion of the arc rail 3, a club swinging height limiting block 5 is arranged at the left portion of the arc rail 3, the lower end of the arc rail 3 is fixed to the supports 12, and the upper end of the arc rail 3 is supported on the supportingrod 7; the two supports 12 are separately located on the base 13, symmetrically arranged and fixedly connected with the base 13; the lower end of the supporting rod 7 is fixed to a central point of the rear edge of the base 13 and composed of an upper circular pipe and a lower circular pipe, wherein the lower circular pipe is thick, the upper circular pipe is thin, the upper circular pipe is inserted into the lower circular pipe and can slide in the lower circular pipe, an upper opening of the lower circular pipe is provided with a locking sleeve 8, and the supporting rod 7 is provided with adjusting members 9, a head fixing rod 10 and a waist fixing rod 11. The golf club swinging trainer is used for direct club hitting practice and enables a practitioner to form standard and correct clubswinging movement during club swinging and club hitting practice.

The invention belongs to the technical field of automobile suspensions, and particularly relates to a swing arm type suspension based on the bottom of an automobile. The suspension comprises a wheel mechanism and a swing arm mechanism; when the automobile runs on a protruding obstacle or the low-lying ground, wheels can swing when being in contact with the protruding obstacle or the low-lying ground; the wheels swing to drive a sliding disk; the sliding disk swings to drive a first swing block and a second swing block to swing; the first swing block and the second swing block swing to drive afourth output shaft, an eighth bevel gear, a seventh bevel gear, a third output shaft, a sixth bevel gear, a fifth bevel gear, a second output shaft and a fourth bevel gear swing which are installed in the first and second swing blocks to swing; the wheel mechanism and the swing arm mechanism swing around a fixed shaft; hard friction between tires and the ground can be prevented through swinging,and therefore the tires are protected; normal running of the automobile on the protruded obstacle or the low-lying ground can be ensured, and the suspension has a good use effect.

The invention discloses a device for needle core withdrawing together with vacuum suction in one-handed performance for puncture biopsy, including a tube body, a hollow puncture needle, a flexible puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component; a division plate divides the space in the tube body into a piston rod socket and a piston driving rod socket, the puncture needle is mounted on a needle connection tube, the piston rod includes piston rod teeth, the piston driving rod includes piston driving rod teeth, the piston rod is provided with a piston rod needle core socket, the rubber piston sleeve is provided with a rubber piston sleeve needle core socket, a tube body needle core socket and tube body needle core thread holes are arranged on the tube body, tube body needle-core clamping screws are arranged on the tube body needle-core thread holes, and a needle core guide pulley device is arranged on the piston rod. Therefore, lifting and thrusting of the puncture needle can be realized, and the puncture needle core withdrawing together with vacuum suction can be carried out at the same time.

The invention discloses a flexible upper prestressing adjusting device which aims to increase material pressing time and adjust the prestressing amount. The device comprises an axial screw, a spring, a prestressing wheel stand, a rivet, an upper track disc, a gasket, a prestressing wheel, a prestressing wheel sleeve, a lock screw, a check ring and a forced filling oil cup. The prestressing wheel stand is connected with the upper track disc through the rivet, the gasket is installed between the prestressing wheel stand and the upper track disc, and the spring sleeves the axial screw. The axial screw is fixed on the upper track disc after penetrating the prestressing wheel stand, the prestressing wheel sleeve sleeves the prestressing wheel stand after being installed in an inner hole of the prestressing wheel, the check ring is fixed through the lock screw after sleeving the outer side of the prestressing wheel, and the forced filling oil cup is installed on the prestressing wheel stand. The flexible upper prestressing adjusting device can serve as an upgrading product for a rigid structure prestressing adjusting device for a high-speed rotating type sheeter.

The invention discloses a pill dropping machine capable of conveniently adjusting dropping distance. The pill dropping machine comprises a rack, a liquid dropping tank, a constant pressure air source, a cooling column and an electric cabinet, wherein the liquid dropping tank, the constant pressure air source, the cooling column and the electric cabinet are arranged on the rack. The pill dropping machine also comprises a liquid storage adjusting tank, a lifting mechanism and a guide mechanism, the liquid storage adjusting tank is arranged on a supporting plate of the lifting mechanism, and the guide mechanism vertically guides the supporting plate. A connector pipe is arranged on the side wall of the bottom of the liquid storage adjusting tank and communicates with a liquid inlet and outlet in the bottom end of the cooling column through a hose. The invention further provides a dropping distance adjusting method of the pill dropping machine. According to the pill dropping machine capable of conveniently adjusting the dropping distance and the dropping distance adjusting method of the pill dropping machine, the liquid level of cooling oil in the cooling column can be conveniently adjusted by arranging the liquid storage adjusting tank of the cooling oil, and then the dropping distance is adjusted.

The invention discloses a multi-groove type neodymium iron boron degumming, cleaning and drying machine. The multi-groove type neodymium iron boron degumming, cleaning and drying machine comprises a machine body, wherein a cleaning exhaust fan and a degumming exhaust fan are installed above the cabinet body, observation windows are arranged on front and rear wall plates of the cabinet body, and afeeding table and a discharging table are arranged at two ends of the cabinet body respectively; a drying assembly is arranged between the discharging table and the cabinet body; a cleaning assembly,a degumming assembly and a rinsing assembly are sequentially installed in the cabinet body and between the feeding table and the drying assembly; the feeding table, the cleaning assembly, the degumming assembly, the rinsing assembly, the drying assembly and the discharging table are connected by means of a conveying assembly; the conveying assembly comprises a conveying belt and a carrying assembly; and a circulating fan set is arranged on the back surface of a shell body of the drying assembly, a drying air port is formed in the bottom surface of the same, and a far-infrared heater is arranged at the top part of the same. The multi-groove type neodymium iron boron degumming, cleaning and drying machine has the effects of being small in pollution, high in production efficiency and controllable in quality, and solves the problems that granular products are prone to being adsorbed together and cleaning, degumming and drying difficulty is increased in the prior art.

The invention relates to a monorail suspension inspection trolley, and belongs to remote control inspection equipment. The technical scheme adopted by the invention is as follows: the monorail suspension inspection trolley comprises at least two sets of moving wheels located above a single rail. Built-in driving device of moving wheel, moving wheel carriers are arranged at the end parts of wheel shafts of all the moving wheels for connection; the axle distance between the moving wheels is fixed; the same crawler belt is arranged on the outer peripheral faces of all the moving wheels, the innerside face of the crawler belt and the outer peripheral faces of the moving wheels are provided with concave-convex structures meshed with each other, the outer side face of the crawler belt is provided with a rail groove matched with the rail in shape, the rail is embedded into the rail groove, a hoisting connecting frame is hung below the moving wheel frame, and inspection equipment is installedbelow the hoisting connecting frame. Crawler-type transmission is adopted, the problem of hard friction between the trolley and a rope rail is solved, the trolley has good vibration suppression performance, stable walking, good skid resistance and climbing capacity, and the trolley can be well suitable for special industrial occasions such as underground coal mines and chemical workshops and is good in applicability.

The invention discloses a cleaning type winding device for a graphene heating wire in the technical field of graphene. The device comprises a base, wherein supporting legs are arranged on the periphery of the bottom of the base, a power strip is externally connected to the rear side of the top of the base, a plug is inserted in the power strip, the plug is connected with one end of the heating wire, the other end of the heating wire is spirally wound around a wire winding ring, the wire winding ring is movably connected to a winding assembly, the winding assembly is connected to a driving motor, the driving motor is fixedly connected to the outer wall of the base, the base is connected with a cleaning assembly on the front side of the wire winding ring, a connecting sponge strip and a supporting sponge strip are arranged, when the heating wire penetrates through the position between the connecting sponge strip and the supporting sponge strip, unremoved soil particles can be rubbed andremoved again, only the supporting sponge strip and a supporting plate are arranged below the connecting sponge strip through a connecting rod and a supporting block, and the rubbed soil particles cannot be blocked and are completely discharged through a dirt discharging groove.

The invention belongs to the field of sludge treatment equipment, and discloses an angle-adjustable pipeline connecting structure. The angle-adjustable pipeline connecting structure comprises a valvebody, a valve ball, a first flange and a second flange; the inner side of one end of the valve body is provided with a connecting inner cavity, and the end is provided with a port with the small innerside and the large outer side; the valve body is further provided with a first connecting portion; the first flange is provided with a second connecting portion; the second connecting portion is connected with the first connecting portion through a fixing part; the valve ball is located in the connecting inner cavity; and the second flange penetrates through the first flange and the port througha water supply pipeline to be connected with the valve ball. The invention further discloses an installing method of the pipeline connecting structure and a long-line pipeline with the pipeline connecting structure. Therefore, connection of the long-line pipeline can be applied to the high-pressure work condition, and the pipeline angle steering problem can be solved.

The invention discloses a bookend convenient to move, which comprises a bottom plate, a tongue plate and a baffle plate, the tongue plate is sequentially provided with a hollow first strip-shaped hole, a hollow second strip-shaped hole and a hollow third strip-shaped hole, and the rear ends of the first strip-shaped hole, the second strip-shaped hole and the third strip-shaped hole extend into the bottom plate; a first connecting plate is arranged between the first strip-shaped hole and the second strip-shaped hole, and a second connecting plate is arranged between the second strip-shaped hole and the third strip-shaped hole; more than two first vertical strip holes are formed in the first connecting plate, and second vertical strip holes opposite to the first vertical strip holes are formed in the second connecting plate; two shaft bodies are inserted in each of the first vertical strip hole and the second vertical strip hole which are opposite to each other, and a wheel body is arranged at each of two ends of each shaft body; and a movable insertion strip is arranged in the second strip-shaped hole. The device has the advantages of being reasonable in structural layout, convenient to move and suitable for wide application and popularization.

The invention provides a glasses valve with long service life. The glasses valve comprises a bracket, a left valve body, a right valve body, a middle valve body, an elastic member and a driving mechanism, wherein the left valve body comprises a first valve body and a second valve body; and the driving mechanism comprises a first driving mechanism and a second driving mechanism. According to the glasses valve, through the design of the elastic member, the second valve body can slide towards the first valve body, so that an interval is generated between the second valve body and the middle valvebody; meanwhile, by utilizing the design of the elastic member, when the second valve body moves away from the middle valve body in the axial direction during use, a spring pushes the middle valve body away under the action of the elastic force of the spring to generate an interval between the middle valve body and the right valve body, so that the problem that the hard friction is generated among the middle valve body, the second valve body and the right valve body to damage the valve bodies in a state that the middle valve body is switched from blocking a second through hole and a third through hole to communicating the second through hole and the third through hole or in an opposite state is solved, and accordingly the service life of the glasses valve is guaranteed.

The invention provides a kitchen garbage can, and belongs to the technical field of daily life. According to the technical scheme, the kitchen garbage can comprises a lower barrel body, wherein the lower barrel body comprises a bottom part and a top part; a clamping ring is arranged on the top part and is fixedly connected to the lower barrel body; the clamping ring consists of an upper end part and a lower end part; the upper end part is in shape of a hollow cylinder, and the lower end part is in shape of a hollow tapered platform; a tongue part is arranged on the tapered platform surface ofthe lower end part, and a tongue root part is connected to the tapered platform surface; a rotatable pressing ring is arranged on the upper end part of the clamping ring; an extruding plate A is arranged in the outer circumference of the pressing ring; a barrel cover is arranged at the upper end of the pressing ring; a notch is formed in the outer circumference of the barrel cover; an extruding plate B is arranged at the notch; and the extruding plate A is clamped into the notch. The kitchen garbage can has the beneficial effects that the middle part of a garbage bag can be effectively clampedthrough the clamping ring, and thus volume of acidic and odor gas dispersed into the air can be reduced; and opening of the garbage bag can be sealed, so that the acidic and odor gas can be preventedfrom spreading to the air; liquid is prevented from scattering; and the environmental pollution is avoided.

The invention discloses a conveying device for surface leather stamping of ball sports goods and belongs to the field of ball leather conveying, the conveying device for surface leather stamping of the ball sports goods can achieve rapid separation of stamped leather blocks, and a sleeve arranged on the outer side of a fixed roller in a sleeving mode is arranged on the right side of a first guide roller; a plurality of first through holes communicating with the interiors of the fixed rollers are formed in the outer sides of the sleeves, air flow is pumped by means of work of a vacuumizing pump in the main machine body, leather blocks formed in the leather materials in a punching mode can be adsorbed, the leather blocks are automatically separated in cooperation with movement of the leather materials, and automatic separation operation in the conveying process is achieved; and the working efficiency of the device is improved.

The invention relates to a screw pump driving device. The screw pump driving device comprises a driving motor, a driving base, a blowout preventer and a sucker rod polished rod; the driving motor comprises a hollow motor shaft, a rubber cylinder jacket and a square clamp; the driving base comprises a central tube, a main shaft, a central tube bearing, a cap head, a packing seal, a packing pressingcap, a braking flange, a braking jackscrew, upper and lower mechanical seals, a bearing cap, a cylindrical pin, an oil pointer, a carrying bearing, a base shell, an oil injection plug, a bottom flange, an oil drain plug and upper and lower alignment bearings; and the blowout preventer comprises a blowout preventer shell, a pressure relief screwed plug, a wellhead connector, a wellhead flange connector and a polished rod clamping device. By means of the driving device, the risk of flyout of the rod or the square clamp or other parts is avoided, risks caused by the failure of the blowout preventer are reduced, the service life of the motor is prolonged, pipeline backflow caused by falloff of the polished rod is prevented, the economic loss and environmental pollution caused by oil leakage are avoided, rigid friction between the polished rod and an inner hole of the hollow motor shaft is prevented, and the motor main shaft is protected.

The invention discloses an internal spherical gear and an external spherical gear in the figure 1, and relates to high load of a tanning drum, low torque of a spur gear, high starting load and damaged gear shape. An internal spherical tooth consists of a horizontal shaft middle peripheral internal R semiarc and two end surface bearing holes. An external spherical tooth consists of a fan ring large arc middle connected vertical shaft cylinder lower end surface and a vertical shaft cylinder upper end surface connected circular ball. Two shaft shoulders are matched with two end surface bearing holes, a gear ring base shaft hole and the horizontal shaft middle peripheral internal R semiarc to combine as an internal spherical line. A fan ring parallel surface is matched with a large gear ring base groove and a section to combine as a fan ring arch circle. A large gear base in the figure 1 replaces a drum disc skeleton to increase the torque of the external spherical gear to solve low torque of the spur gear, high starting load and damaged gear shape. The external spherical tooth drives the internal spherical tooth to slide and rotate in the same direction to solve hard friction and easy wear between teeth, and long service life. The internal and external spherical teeth are replaced, and large and small gear ring bases are not replaced to save the production cost. The internal and external spherical gears are applied to rotary transmission of tanning machinery.