9018 results about "Bevel gear" patented technology

The invention relates to the technical field of welding, and provides a steel pipe welding auxiliary device for steel furniture production, which comprises an adjusting mechanism, a control mechanism is fixedly mounted on the inner left side of the adjusting mechanism, a fixing mechanism is fixedly mounted at the inner upper end of the adjusting mechanism, and the adjusting mechanism comprises a base, a transmission rod and a gear motor. Mounting bins are fixedly connected to the two sides of the upper end of the base correspondingly, lifting bins are slidably connected to the interiors of the mounting bins correspondingly, first threaded rods are in threaded connection to the lower ends of the lifting bins correspondingly, and first bevel gears are fixedly connected to the lower ends of the first threaded rods correspondingly. Through the cooperation of the adjusting mechanism and the control mechanism, the adjusting mechanism of different welding surfaces at the welding seam is optimized, the height change amplitude of the seam can be effectively controlled, obvious lifting of the seam is avoided, the stability of the welding process and the welding quality are guaranteed, the operation intensity of workers is reduced, and the production efficiency is improved. And the comfort and the convenience in the operation process are improved.

The invention relates to the technical field of tea leaf fermentation, in particular to a tea leaf fermentation device and method. The central supporting cylinder is coaxially arranged in the fermentation tank; the fan-shaped units are used for bearing to-be-fermented tea leaves; a plurality of groups of fan-shaped units are uniformly distributed in the circumferential direction of the central supporting cylinder and are encircled to form a tray assembly; the driving assembly comprises a driving main shaft arranged in the center supporting cylinder in a penetrating mode, a driving bevel gear fixedly arranged on the driving main shaft, and a driven shaft with one end connected with the fan-shaped units and the other end extending into the center supporting cylinder. By arranging the fan-shaped units which are uniformly distributed in the circumferential direction of the central supporting cylinder, the fan-shaped units are matched with the driving assembly to realize self-axis autorotation of the fan-shaped units, so that tea leaves are turned over in the autorotation process, efficient replacement of the tea leaves on the surface layer and the inner layer as well as the upper layer and the lower layer is realized, the fermentation difference is fundamentally eliminated, and the uniformity of the tea leaf quality is improved.

The invention discloses a strong anti-overturning power generation device and method based on wind wave combined capture, and the device comprises a four-column type semi-submersible fan platform and a wind driven generator located above the four-column type semi-submersible fan platform, and the four-column type semi-submersible fan platform comprises hollow columns. The bottom of the hollow stand column is fixedly connected with the bottom of the outer side stand column through a horizontal column, a floating wave energy absorption system is arranged on the outer side of the outer side stand column, and the output end of the floating wave energy absorption system is connected with the input end of a power generator system through a bevel gear power generation system in the hollow stand column. One end of the floating wave energy absorption system is connected with the spring system in the hollow stand column; the core technical problems that an existing device is poor in stability, high in cost, low in efficiency, weak in adaptability and the like are solved.

The utility model discloses a high-flexibility flexible mechanical finger supporting forward and reverse holding and a manipulator. The mechanical finger comprises a middle finger section, a base finger section and an end finger section, wherein the base finger section and the end finger section are rotationally connected with the two ends of the middle finger section respectively. Driving units are arranged in the end finger section, the middle finger section and the base finger section; bevel gear transmission units are arranged at the tail end of the end finger section, the tail end of the middle finger section and the tail end of the base finger section; the driving units are in transmission connection with the corresponding bevel gear transmission units; the driving unit drives the end finger section and the base finger section to rotate by taking the corresponding bevel gear transmission unit as a central shaft; through the structure and position design of the micro driving motor and the bevel gear transmission unit, each finger and each knuckle of the manipulator can be flexibly controlled, so that the manipulator has higher bionic flexibility and more precise grabbing capacity, and can be suitable for different scene requirements; by means of the special inserting mode between knuckles, the left-right hand grabbing function of the single mechanical arm is achieved.

The invention discloses a landscaping engineering construction dust fall device, and relates to the technical field of construction dust fall, the landscaping engineering construction dust fall device comprises a spraying table, a rotary table is fixedly connected to the upper end of the spraying table, a cleaning mechanism is arranged at the upper end of the spraying table, a supporting mechanism is arranged on the surface of the rotary table, and the rotary table comprises a spraying cylinder rotationally connected to the upper end of the rotary table; a first supporting seat is fixedly connected to the upper end of the spraying table, a first rotating sleeve is rotatably connected to the inner wall of the first supporting seat, a missing gear is fixedly connected to the side end of the first rotating sleeve, a rotating rod is rotatably connected to the upper end of the spraying table, and an upper bevel gear is fixedly connected to the surface of the rotating rod. By adopting the reversing transmission technology that the first rotating sleeve and the missing gear are matched with the upper helical gear and the lower helical gear of the rotating rod, the spraying barrel can be driven to achieve stable periodic reciprocating swing, the limitation of fixed angle or one-way rotation of traditional spraying equipment is broken through, the coverage range of water mist is greatly expanded, and distribution is more uniform.

The invention relates to the technical field of building construction, in particular to a cement material stirring device for building decoration engineering construction, a screening mechanism in the cement material stirring device drives an inclined box and an internal inclined screen to continuously move up and down in a reciprocating manner through a transmission assembly, and dynamic screening of input cement is achieved; qualified powder rapidly penetrates through the screen and enters a subsequent process through the vertical pipe, intercepted agglomerates automatically roll down to a lower outlet under the action of vibration and inclination, the agglomerated cement materials are screened, meanwhile, the smashing mechanism ingeniously obtains power from a driving motor through a rotating shaft, and the smashing efficiency is improved. Crushing cutters distributed on a first rotating rod and a second rotating rod in a staggered mode in the box body are driven by a bevel gear and a gear set to rotate oppositely at a high speed, cakes falling from a lower outlet are thoroughly cut and scattered, the cakes are reduced into fine powder and then collected into a stirring barrel, and the efficiency and quality of raw material preparation before stirring are greatly improved; and the problem of non-uniform slurry caused by cement caking and core hardening is fundamentally avoided.

The utility model discloses a safety hand-cranking mechanism for a point switch, which relates to the technical field of railway turnout switching equipment and comprises a fixing sleeve, a first bevel gear and a second bevel gear, two holes are arranged on the fixing sleeve, and the axes of the two holes are intersected; the end of the hand-cranking projecting shaft is located in one hole of the fixing sleeve, and the first bevel gear is arranged at the end of the hand-cranking projecting shaft; the other hole of the fixing sleeve is used for inserting the hand crank, and the second bevel gear is arranged at the end of the hand crank; the hand crank is inserted into the other hole of the fixing sleeve, so that the first bevel gear is meshed with the second bevel gear, and the switch machine is driven by rotating the hand crank; an identification ring is mounted in a hole, into which the hand crank is inserted, in the fixing sleeve; and an identification column is arranged on the hand crank in series with the second bevel gear. The included angle between the hand-cranking handle and the hand-cranking projecting shaft can be designed as required, so that the selection flexibility of the insertion position of the hand-cranking handle is greatly enhanced. Corresponding identification of the point switch and the hand crank is achieved, and safety is improved.

The invention relates to the technical field of milling, and discloses a milling device which comprises a milling machine tool, a lifting assembly is arranged on the outer wall of the milling machine tool, a fixing frame is arranged on the outer wall of the lifting assembly, a first motor is fixedly connected to the outer wall of the fixing frame, a through shaft is connected to the output end of the first motor, and a second motor is arranged on the outer wall of the through shaft. Positioning bevel gears are fixedly connected to the two sides of the outer wall of the through shaft, bevel gear shafts are connected to the tooth ends of the positioning bevel gears in a meshed mode, bevel gear rack plates are connected to the tooth ends of the bevel gear shafts in a meshed mode, vertical rods are fixedly connected to the two sides of the lower surface of the fixing frame, and springs are arranged on the inner walls of the vertical rods. The motor I is started to drive the through shaft to rotate so as to drive the positioning bevel gear and the bevel gear shaft to rotate, so that the fixed frame integrally moves, the side edge of the steel plate is gradually milled, and then the motor II is started to mill the other side edge, so that continuous milling can be realized without changing the placing direction of the steel plate by stopping the machine, and the working efficiency is improved.

The invention relates to the technical field of carburetors, in particular to a racing motorcycle carburetor throttle valve body system based on double-cavity cooperative control, which comprises a carburetor body, first valve shafts and second valve shafts which are symmetrical to each other are rotationally mounted at the centers of the two ends of the inner sides of the two throttle valve assemblies correspondingly, first bevel gears are fixedly mounted at the upper ends of the two symmetrical first valve shafts, and second bevel gears are fixedly mounted at the upper ends of the two symmetrical second valve shafts; a gear box body is fixedly installed at the upper ends of the two throttle valve assemblies, and a synchronous transmission mechanism used for achieving synchronous action of the first valve shaft and the second valve shaft is arranged in the gear box body. By arranging the two sets of symmetrical throttle valve assemblies and the synchronous transmission mechanism, absolute synchronous equal-proportion opening and closing of the first valve plate and the second valve plate of the double-cavity throttle valve can be achieved, the air inflow difference is avoided, and the double-cavity throttle valve is suitable for the high-rotating-speed scene of motorcycle racing.

A steering gear for a surgical instrument includes two motorized drives designed to spatially align a wobble plate via the adjustment angle of the two drives, which is designed to control a distal angling mechanism of the surgical instrument. A first of the two drives has a first motor, which drives a drive pinion via a driveshaft, which engages with a lateral toothing of a first toothed rack, driving a first transmission pinion of a first double gear. A second of the two drives has a second motor driving a drive pinion via a driveshaft, which engages with a lateral toothing of a second toothed rack and drives a second transmission pinion of a second double gear wheel. The wobble plate is arranged between the two bevel gear rims, which are facing one another and lie on a common axis.

The invention belongs to the field of machine manufacturing, and discloses a deep hole inner molded surface profiling boring direct-drive intelligent control cutter system which comprises a cutter assembly, a rotary drive assembly and a sensor assembly. A rotary driving shaft of the rotary driving assembly is connected with an axial gear of the right-angle bevel gear pair, the inner side of a radial gear is connected with a driving nut, and the base plate and the tool apron are connected through a ball screw, so that a blade on the tool apron is driven to achieve radial feeding. The sensor assembly comprises a force sensor, a temperature sensor and a vibration sensor, signals are collected in real time and fed back to the drive control circuit board to control the rotary drive assembly, and therefore the profiling boring precision of blade feeding is improved. Direct driving and intelligent sensing control are combined and embedded in the profiling adjusting type boring cutter, a cutter transmission chain is greatly reduced, the transmission rigidity, the control precision and the response speed are improved, and therefore the performance requirements of a deep hole complex inner profile for high precision, high quality, high efficiency and high cost performance are met.

The present invention relates to a transmission arrangement (2) for a machine tool comprising a bevel gear stage (11), a spur gear stage (8), and a transmission housing (29). The spur gear stage (8) has a drive pinion (9) and a spur gear (10). The bevel gear stage (11) has a bevel gear shaft (12) and a ring gear (13). The transmission housing (29) has a housing element (14). The drive pinion (9) forms a drive. The spur gear (10) and the bevel gear shaft (12) are permanently and rotationally fixed to one another. The ring gear (13) forms an output. The spur gear (10) and the bevel gear shaft are mounted in the housing element (14). The housing element (14) has a journal (17) on which the ring gear (13) is mounted. The pin (17) has a recess (23) through which the bevel gear shaft (12) can be guided into its mounting position.Furthermore, the invention relates to a gearbox housing (29) for a gearbox arrangement (2) and a working machine.

The invention relates to photoelectric integrated COB packaging equipment, and relates to the technical field of semiconductor packaging, and the photoelectric integrated COB packaging equipment comprises a chip mounting module used for grabbing and mounting a chip, a substrate conveying module used for conveying a substrate, and a photoelectric synchronous packaging module used for realizing interconnection packaging of the chip and the substrate. By arranging the vacuum adsorption adjusting mechanism, when chips of different specifications need to be adapted, the motor drives the rotating disc to rotate, and the rotating disc is meshed with a gear ring structure on the outer layer of the annular disc through gear teeth to drive the annular disc to rotate; a conical tooth structure on the inner side of the annular disc is meshed with a plurality of groups of bevel gears to drive the bevel gears to synchronously rotate so as to drive a threaded column fixed with the bevel gears to rotate; when the threaded column rotates, the movable plate in threaded connection moves in the axial direction of the threaded column, and the distance between the suction nozzles is adjusted. And meanwhile, the vacuum generator independently provides negative pressure for each group of suction nozzles through the air pipe, so that on-off of the negative pressure can be independently controlled to adapt to adsorption and release of chips with different sizes.

The invention provides an interbody fusion cage. The interbody fusion cage comprises an upper vertebral plate, a lower vertebral plate and a shell, the driving device comprises a driving rod, and a bevel gear pair is arranged on one side of the driving rod; the transmission bevel gear is meshed with the bevel gear pair; the top of the supporting rod is provided with a first spherical hinge, the first spherical hinge is embedded into the spherical seat of the upper vertebral plate, the outer surface of the supporting rod is provided with a transmission thread, and the bottom of the supporting rod is provided with a second spherical hinge; the sleeve is arranged on the outer surface of the supporting rod in a sleeving mode, and the top of the flexible base abuts against the second spherical hinge. According to the technical scheme, the stress shielding effect in the implanting process of the interbody fusion cage can be effectively achieved, and the technical problem that the interbody fusion cage is attached to the physiological curvature can be effectively solved.

The utility model relates to the technical field of lifting tools, and discloses a hand-cranking jack which comprises an adjusting assembly, an inner supporting piece and a hollow outer supporting piece used for jacking an object, the outer supporting piece is arranged on the inner supporting piece in a sleeved mode and makes contact with the outer surface of the inner supporting piece, the adjusting assembly is used for driving the outer supporting piece to integrally slide up and down, and when the outer supporting piece integrally slides up and down, the outer supporting piece is in contact with the outer surface of the inner supporting piece. The inner wall and the outer wall of the inner supporting piece guide and support the outer supporting piece. The adjusting assembly comprises a first bevel gear arranged in the outer supporting piece, a second bevel gear meshed with the first bevel gear and a screw rod rotationally connected with the outer supporting piece, the upper end of the screw rod is fixedly connected with the second bevel gear, the lower end of the screw rod extends into the inner supporting piece and is in threaded connection with the inner supporting piece, and the first bevel gear rotates to drive the screw rod to rotate. The first bevel gear drives the second bevel gear to horizontally and circumferentially rotate, and the second bevel gear drives the screw to horizontally and circumferentially rotate. According to the utility model, the contact surface can be increased, and the stability of the jack during lifting is improved.

The utility model relates to a driving mechanism of a full-automatic intelligent lock, which comprises an unlocking driving mechanism of a lock body provided with a motor driving dead bolt, a trigger bolt and a latch bolt telescopic lock shell, and is characterized in that the driving mechanism is provided with a transmission sheet, a dead bolt shifting sheet, a driving sheet, a dead bolt shifting block, a switching gear, a handle shifting sheet, a handle gear shifting sheet and a gear opening sheet, the square tongue, the motor, the square shaft, the trigger tongue and the inclined tongue are sequentially connected to form a driving mechanism. When a lock is unlocked, a dead bolt can drive a trigger bolt and an inclined bolt to push a lock shell together during driving, so that the lock shell is very smooth, the mute effect is achieved, and the structural optimization is extreme. The mechanical structure design of the lock body is simple, the lock body control panel of the intelligent part is connected with the motor, and the bevel gear of the motor is meshed with the upper teeth of the switching gear, so that the dead bolt, the trigger bolt and the inclined bolt are easy to unlock, low in power consumption and convenient to install, multiple functions of electronic unlocking and key unlocking are considered, and the structure is innovative and unique.

The utility model is suitable for the technical field of deburring cutters, and provides an aluminum pipe inside and outside deburring cutter which comprises a supporting disc. The three first ball screws and the second ball screw rotate in the supporting disc, the second ball screw is located between the two first ball screws, and the three first ball screws are axially arranged in the supporting disc at equal intervals; the driven bevel gears are respectively fixed at one end of the ball screw I and one end of the ball screw II; the movable frame is fixed on a nut seat on the first ball screw through a screw; the rotating rod rotates on the inner side wall of the moving frame; through mutual cooperation of the rotating rod and the deburring cutter, on one hand, the cutter can be positioned on the inner side of the aluminum pipe with gears of different inner diameters, it is guaranteed that the deburring cutter is continuously attached to the inner side wall of the aluminum pipe, the aluminum pipe is prevented from being scratched during deburring, and on the other hand, it can be guaranteed that the cutter moves stably in the aluminum pipe, and uniform deburring of the inner side wall of the aluminum pipe is achieved.

The utility model discloses a milling multi-angle swing workbench structure, which relates to the technical field of milling, and comprises a bottom plate, the bottom of the outer wall of a cylindrical sleeve and the top of the outer wall of a sliding column are fixedly connected with a multi-position adjusting assembly, and the inner wall of a protective frame is movably connected with a vertical direction adjusting assembly. According to the milling multi-angle swing workbench structure, the angle of the workbench in the horizontal direction and the height from the workbench to the bottom plate can be adjusted through the multi-position adjusting assembly. The workbench is mainly driven by hydraulic pressure to ascend and descend and driven by gear transmission to rotate, machining of workpieces in different directions can be met, and the height adjustment of the workpieces can ensure the machining precision and avoid collision. And the angle of the workbench in the vertical direction can be rapidly adjusted through the vertical direction adjusting assembly. Transmission of the worm gear and the worm has self-locking performance. And the rotating force of the rotating shaft is transmitted to the connecting shaft through linkage of the bevel gears, so that the connecting shaft drives the workbench to rotate in the vertical direction through the two connecting plates, and the practicability is high.

The utility model discloses a barrel inner wall wiping advancing main machine which comprises a motor assembly, a gear assembly and a cleaning and polishing brush, and the gear assembly is connected between the motor assembly and the cleaning and polishing brush. The motor assembly comprises a machine shell, a motor and a speed reducer, and the motor and the speed reducer are installed in the machine shell. The gear assembly comprises an assembly shell, a main shaft, a worm section, a crawling wheel, a worm wheel, a bevel tooth section, a bevel gear and a first brush body; the cleaning and polishing brush comprises a flange end cover, a supporting body, a second brush body, a fourth screw and a plane bearing. Residues on the inner wall of the cylinder body can be rapidly removed, and maintenance work of pipelines under various working conditions can be completed.

The invention discloses pile planting equipment, and relates to the technical field of pile planting, the pile planting equipment comprises a mounting frame and a clamping mechanism, the top of the mounting frame is provided with a positioning mechanism, the outer side of the positioning mechanism is provided with a cleaning mechanism, the positioning mechanism comprises a mounting box, and the outer side of the mounting box is fixedly connected with a servo motor. According to the pile planting equipment, through a transmission system composed of a servo motor, a first threaded rod, a second threaded rod, a first bevel gear, a second bevel gear, a rotating rod, a transmission wheel and a belt, a first threaded block and a second threaded block are driven to drive a supporting rod and a positioning block to move synchronously, and four-direction synchronous automatic centering of a pile body is achieved; compared with the prior art, pile bodies with different hoisting precisions can be forcibly and automatically corrected and limited at the theoretical center position of the pile planting through hole of the mounting frame, a clamping reference is provided for a subsequent clamping mechanism, the problems of unstable clamping, connector butt joint failure and the like caused by pile body deflection are fundamentally avoided, and the pile planting connection precision and the operation reliability are greatly improved.

The invention relates to the technical field of gas machinery, and discloses a pressurizing energy-saving centrifugal fan which comprises a limiting ring, a driving motor is fixedly connected into the limiting ring, an impeller frame is fixedly arranged at the output end of the driving motor, and fan blades are arranged in the impeller frame. A protection assembly and a transmission assembly are arranged on the outer wall of the impeller frame, a friction plate is fixedly connected to the outer wall of the transmission assembly, a circular gear is arranged on the outer wall of the friction plate, an annular rack is connected to the tooth end of the circular gear in a meshed mode, and a connecting frame is fixedly connected to the outer wall of the annular rack. Through the linkage design that a driving motor drives an impeller frame to be in linkage with a first bevel gear and a second bevel gear, in combination with mechanical transmission of a friction plate, a circular gear and an annular rack, automatic adjustment of the size of an air inlet of an air inlet pipe is achieved, opening and closing of a flow guide plate can be adjusted in real time according to the rotating speed of an impeller, the air inlet amount and air pressure are optimized, and turbulence losses are effectively reduced; and the working efficiency and performance of the fan are improved.

The invention discloses a modeling method for a thermally induced tooth surface error of a spiral bevel gear. The modeling method comprises the following steps: S1, establishing a motion coordinate system of a cradle type gear milling machine; s2, according to the motion coordinate system of the cradle type gear milling machine and the gear meshing equation, a tooth surface equation machined through a generating method is constructed; s3, performing grid discretization on the tooth surface of the gear to be machined, and solving the tooth surface equation by adopting a rotary projection method and a genetic algorithm to obtain three-dimensional coordinates of discrete points of the tooth surface of the gear to be machined; s4, establishing a motion coordinate system of the numerical control gear milling machine; carrying out equivalent conversion on the motion coordinate systems of the cradle type gear milling machine and the numerical control gear milling machine to obtain a mapping relation between each motion axis coordinate of the numerical control gear milling machine and the tooth surface discrete points of the gear to be machined; and S5, a thermally induced tooth surface error model is constructed, a tooth surface rotation calibration method is adopted to enable the midpoint of the theoretical tooth surface to coincide with the midpoint of the error tooth surface so as to correct the tooth surface error of the gear to be machined, and an error vector is projected in the normal direction so as to obtain the tooth surface error value of each discrete point.

The utility model discloses an anti-deformation bearing thin-wall part machining supporting and fixing structure which comprises a base and a supporting assembly, a machining table is connected to the top of the base, clamping blocks are arranged on the two sides of the top of the machining table, and the supporting assembly is arranged in the machining table and comprises a bevel gear ring and a plurality of bevel gears meshed with the bevel gear ring. A lead screw is arranged in the machining table through a plurality of rotating frames, the surface of the lead screw is in transmission connection with a supporting plate through a lead screw nut, the supporting and fixing structure is provided with a supporting assembly, a driving motor drives a bevel gear ring to rotate, a plurality of bevel gears rotate synchronously, then the lead screw is driven to rotate, and the supporting plate ascends to support the interior of the thin-wall part; by means of the internal supporting mode, pressure and friction force borne by the inner wall of the thin-wall part during polishing can be effectively dispersed, deformation caused by lack of supporting is avoided, the size precision, the shape precision and the surface quality of the bearing thin-wall part are guaranteed, the product percent of pass is increased, and waste products are reduced.

The invention relates to a two-station operating mechanism for a PT (potential transformer) of a C-GIS (gas insulated switchgear), which comprises an operating mechanism box, a centering assembly is mounted in the operating mechanism box, the centering assembly comprises a quick-return crank arm, two sides of the quick-return crank arm are respectively connected with a reset spring guide rod, the other side of each reset spring guide rod extends out of the operating mechanism box, and the other side of each reset spring guide rod extends out of the operating mechanism box. The outer wall of the reset spring guide rod is further sleeved with a reset spring. The operating assembly comprises an operating handle, a mechanical operating transmission shaft and a sealing shaft, the sealing shaft penetrates through the operating mechanism box and then is connected with a bevel gear, the quick-return crank arm is sleeved on the sealing shaft, one side of the mechanical operating transmission shaft is connected with the sealing shaft, the other side of the mechanical operating transmission shaft is connected with the operating handle, and the operating handle drives the sealing shaft to rotate. And the position of the sealing shaft is kept through the cooperation of the centering assembly. According to the operating mechanism, the mechanical operating transmission shaft, the sealing shaft and the bevel gear are driven to rotate by rotating the operating handle, then the PT cabinet transmission mechanism is driven to rotate, and the operating mechanism is simple in structure, low in cost, small in occupied space, easy to operate, safe and reliable.

An automobile cover panel shaping inspection apparatus. An activated carbon plate (9) is slidably connected to a sliding slot machined on a box body (8). An air discharge pipe (10) is fixedly in communication with a surface of the box body (8). A telescopic end of a second hydraulic cylinder (202) moves to drive a protruding portion of a rack (203) to slide along a sliding groove machined on an inner wall of a first housing (201), thereby driving a first gear (204) and a second gear (205) to rotate. The rotation of the second gear (205) drives a rotating rod (206) to rotate, so that manual adjustment by an operator does not need to be performed, thereby saving manual labor. An output shaft of a motor (402) rotates to drive a first bevel gear (403) to rotate so as to drive a second bevel gear (404) to rotate. The rotation of the second bevel gear (404) drives a third gear (405) to rotate so as to drive a wedge-shaped cylinder (406) to rotate, so that harmful gas can be absorbed, and the operator does not inhale a large amount of harmful gas, thereby not causing harm to the body of the operator and reducing working hazards.

A portable electric pressing tool has an electric motor arranged at least partially within the handle of the tool and having a motor output shaft extending along a first axis along the handle, and a pressing mechanism having a pair of jaws and which is operatively coupled to the motor output shaft via a transmission of the tool which in use causes relative movement of the jaws between first and second relative positions. The transmission may have a bevel gear arrangement for redirecting torque flowing along the first axis into the bevel gear arrangement so that torque output from the bevel gear arrangement flows into a conversion mechanism of the transmission for converting torque into linear force along a second axis for causing said relative movement between the jaws. The motor output shaft is arranged at an angle of 45 degrees to 135 degrees relative to the second axis.

The invention provides a transmission device and a low-dust crusher, and belongs to the technical field of transmission. In the transmission device, a first bevel gear is connected to a first shaft body. The second bevel gear and the third bevel gear are both arranged on the second shaft body. And the second bevel gear and the third bevel gear are engaged with the first bevel gear. The first ratchet wheel and the second ratchet wheel are connected to the second shaft body. The second bevel gear is provided with a first rotating column, and the first rotating column is connected with a first pawl to form a first ratchet mechanism. The third bevel gear is provided with a second rotating column, and the second rotating column is fixedly connected with a second pawl to form a second ratchet mechanism. The ratchet directions of the first ratchet wheel and the second ratchet wheel are the same, so that when the first shaft body acts, only one of the second bevel gear and the third bevel gear can drive the second shaft body. The two driving modes of bidirectional driving and one-way driving are integrated, the structure is more compact, meanwhile, close cooperation of the two driving modes is achieved, and the cooperative control difficulty is lowered.

The high-performance release agent production equipment comprises a reaction cavity shell and a temperature sensing probe, a sealing cover plate is fixed to the outer wall of the top of the reaction cavity shell through a hasp lock, and a gas path rotating connector is fixed to the axis position of the top of the sealing cover plate in a penetrating mode; a hollow stirring rod is rotationally mounted at the axis of the gas path rotating joint through a deep groove ball supporting bearing, and bionic elastic turbulent flow blades which are distributed at equal intervals are in threaded connection with the outer wall of the middle of the hollow stirring rod. Through cooperation of the storage bin, the spiral conveying blade and the first servo motor, the raw material conveying speed can be accurately adjusted, the situation of blockage or low efficiency is avoided, the second servo motor drives the grinding base to rotate at a high speed through meshing transmission of the first bevel gear and the second bevel gear, and the grinding efficiency is improved. An electric telescopic rod is matched to adjust a grinding disc to move left and right for further grinding, blocky raw materials can be fully crushed and ground, raw material particles are uniform and fine, and a good foundation is provided for subsequent reaction.

The utility model relates to the technical field of electric butterfly valves, and discloses a double-seal flange type electric butterfly valve which comprises a valve port, a connecting shell is fixedly connected to the outer wall of the upper end of the valve port, a control valve is fixedly connected to the outer wall of the upper end of the connecting shell, a rotating rod is fixedly connected to the inner wall of the valve port, and the rotating rod is fixedly connected to the outer wall of the upper end of the connecting shell. The outer wall of the rotating rod is sleeved with a sleeve shell, the outer wall of the sleeve shell is fixedly connected with a valve plate, and a sealing assembly is arranged in the valve port. According to the double-sealing flange type electric butterfly valve, a transmission rod is driven by a motor to rotate, the transmission rod rotates, a sleeve shell drives a valve plate to rotate, at the moment, a transmission bevel gear moves on a driving bevel gear to make the transmission bevel gear rotate, and therefore the transmission bevel gear drives a rotating disc to rotate; at the moment, the protruding block is driven by the rotating disc to rotate to make contact with the push plate and can make the push plate move, so that the clamping plate extends out to further seal the valve port, and the sealing effect of double sealing of the butterfly valve is better.

The utility model relates to the technical field of bar chairs, and discloses a bar chair with good stability, which comprises an annular plate, a plurality of support legs are uniformly arranged at the bottom of the annular plate, foot rest rings connected with the support legs are arranged on the support legs, an elastic device capable of improving the sitting comfort is arranged on the annular plate, a circular plate is arranged at the top of the elastic device, and the circular plate is arranged on the bottom of the circular plate. An adjusting device capable of adjusting the height of the chair is arranged on the circular plate, a connecting rod is hinged to the adjusting device, and a semi-surrounding seat surface is hinged to the other end of the connecting rod; the adjusting device comprises an annular cavity formed in the circular plate and a plurality of sliding grooves evenly surrounding the annular cavity, sliding blocks are arranged in the sliding grooves, and a first bevel gear and a second bevel gear meshed with the first bevel gear are arranged in the annular cavity. Compared with the prior art, the chair has the advantages that the stability is good, the height is convenient to adjust, the height of the sitting surface can fluctuate along with the standing and sitting of the body of a person, and the comfort is high.