3003 results about "Cylinder.air" patented technology

The invention discloses a double-platform automatic laser cutting machine, and relates to the technical field of cutting, the double-platform automatic laser cutting machine comprises a case, a base is fixedly mounted at the bottom of the case, a linear motor is fixedly mounted at the top of the inner wall of the case, a first machining table is fixedly mounted at the bottom of the inner wall of the case, and a second machining table is fixedly mounted at the bottom of the inner wall of the case; the protection device is arranged on the inner wall of the machine box and comprises a supporting frame, a laser cutting machine body, a cooling device, a hollow column, a hollow rod, a water inlet hole, a sealing plate, a pneumatic cylinder and a connecting pipe, the laser cutting machine body is driven to move through movement of a linear motor, and laser cutting can be conducted on materials through movement of the laser cutting machine body; the supporting frame is fixedly installed on the linear motor, the cooling device is fixedly installed at the bottom of the supporting frame, the hollow column is fixedly installed on the inner wall of the machine box, and the situation that the machining time of laser beams and materials is insufficient possibly due to the fact that the moving speed of the laser cutting machine body is too high is prevented.

The invention provides a multi-angle cutting laser pipe cutting machine, and belongs to the technical field of laser cutting equipment, the multi-angle cutting laser pipe cutting machine comprises a machining module, a feeding module is arranged at one end of the machining module, a discharging module is arranged at the other end of the machining module, and the multi-angle cutting laser pipe cutting machine further comprises a cutting assembly connected with the machining module and used for cutting pipes; the device has the advantages that flexible adjustment of the position of the focus lens is achieved through cooperation of air cylinder driving and telescopic spring buffering, focus requirements of pipes with different thicknesses are met, flexible connection of a cooling channel is achieved through the telescopic pipe, continuous and stable heat dissipation of the focus lens is guaranteed, and the service life of the lens is prolonged; the electromagnetically-driven rotating cylinder drives the turbine blades to rotate to form negative-pressure airflow, an air curtain is formed at the cutting end, metal residues and dust are prevented from being diffused to the focus lens and the lens cone, a physical isolation barrier is formed through the protection sleeve, impurities are prevented from being attached to equipment parts or blocking a pipeline, long-term stable operation of equipment is guaranteed, and diffusion of the equipment to the working environment is reduced.

A suction-cup gripper device including: at least one pneumatic cylinder including a cylinder body, a piston sliding in an inner chamber of the cylinder body, a rod secured to the piston, the piston-rod assembly being configured to be retracted ad deployed, a pneumatic suction cup secured to the rod, a depressurization circuit, the depressurization circuit including: the rod is tubular, and communicating with the pneumatic suction cup, an inner duct, sealingly connected to the rod via sliding seals, forming a vacuum chamber,and the piston is annular and sweeps an annular pressurization chamber of the cylinder body connected to at least one compressed air port.

The invention relates to a polyurethane carrier roller press-fitting device and a working method thereof.The polyurethane carrier roller press-fitting device comprises a base, a supporting mechanism and press-fitting mechanisms, the supporting mechanism is installed in the middle of the top side of the base, the press-fitting mechanisms are slidably installed at the two ends of the top side of the base, the supporting mechanism comprises a supporting frame, and two supporting roller seats are slidably installed on the top side of the supporting frame; first pneumatic cylinders are installed at the two ends of the supporting frame, and supporting shaft seats provided with V-shaped grooves are installed at the telescopic ends of the first pneumatic cylinders. Through three core technologies of modular adjustment, automatic press fitting and dynamic lubrication cleaning, the problems of low efficiency, poor precision, uneven lubrication and the like in traditional carrier roller assembly are solved, the device is particularly suitable for production scenes of high-precision and large-batch polyurethane carrier rollers, and the comprehensive performance reaches the industry leading level.

The invention relates to the technical field of current transformers, in particular to a winding device for a primary coil of a current transformer and a winding method thereof.The winding device comprises a base and a vertical seat, the vertical seat is vertically mounted on the base, a ring seat is rotatably mounted on the vertical seat, and a mounting ring is arranged on the outer side of the ring seat; a rectangular seat is mounted on the outer side of the mounting ring through a bolt, a gear ring is mounted on the inner side of the ring seat, notches are formed in the ring seat, the mounting ring, the rectangular seat and the gear ring, and a rotating plate is rotationally mounted in the notch of the rectangular seat; in the winding process, a first pneumatic cylinder works to achieve movement of a right-angle seat, the horizontal section of the right-angle seat makes contact with the silk wrapping belt on the top side of the rectangular seat, the vertical section of the right-angle seat makes contact with the silk wrapping belt on the side wall of the rectangular seat, the silk wrapping belt on the top side of the rectangular seat is flattened through a horizontally-moving wheel seat and a horizontally-moving pressing wheel, and automatic flattening is achieved; and each layer of silk wrapping tape is ensured to be tightly attached and free of wrinkles.

The invention relates to the technical field of stainless steel pneumatic cylinder barrels, and particularly discloses a wear-resistant stainless steel pipe for a pneumatic cylinder barrel and a preparation process thereof.The wear-resistant stainless steel pipe for the pneumatic cylinder barrel comprises the steps that firstly, a powder metallurgy method is adopted, tungsten carbide, cerium oxide, chromium nitride and other components are added into stainless steel powder, and the performance of a steel pipe base body is enhanced; the corrosion-resistant alloy layer is deposited on the surface of the steel pipe, so that the corrosion resistance, wear resistance and other properties of the steel pipe are enhanced, finally, a silicon nitride wear-resistant ceramic layer is sintered on the surface of the corrosion-resistant coating, and two lubricants of graphite and molybdenum sulfide are synthesized in gaps and holes of the wear-resistant ceramic layer. The defects on the ceramic surface are blocked; and the ceramic coating is endowed with a self-lubricating function.

The invention relates to the technical field of positioning equipment, and discloses a positioning device for axial flow fan machining, which comprises a support frame, two sliding plates sleeved on two sides of the support frame, and mounting plates on the two sliding plates, an output motor is mounted on one mounting plate, and a first pneumatic cylinder is mounted on the other mounting plate. According to the positioning device for machining the axial flow fan, a main gear is arranged in the middle of the top end of a first clamping base, the main gear is fixedly connected with the top end of a rolling wheel, first gears are arranged on the two sides of the main gear, the two first gears are meshed with the main gear, and second gears are arranged on the side edges of the two first gears; and the second gear is connected with the rolling wheel. A power motor connected with the top end of a main gear is started, the main gear drives a first gear and a second gear to rotate, two rolling wheels located on the side edge of the interior of a first clamping base and an attachment sleeve rotate in the same direction, the axial flow fan rotates, the positioned face is changed, and surface treatment and machining are conveniently conducted on the axial flow fan.

The invention discloses a sensor clamping mechanism and a mutual inductor crimping fault detection device and method, and relates to the technical field of mutual inductor detection. In a project verification process of an existing voltage-withstanding table and an error table, abnormal conditions such as inclination of a mutual inductor body, inaccurate tray positioning, abnormity of a magnetic switch, air leakage of an air cylinder air pipe and the like occur, so that a terminal stud of a test table cannot be in contact with a secondary side terminal of a mutual inductor to be tested; and detection interruption or false detection of a corresponding mutual inductor exists, so that the verification efficiency is reduced. According to the frame body, the measuring rod, the elastic piece and the sensor, the sensor can detect the relative displacement between the measuring rod and the frame body, if the relative displacement is within a normal range, the terminal stud is in successful crimping contact, and if the relative displacement exceeds the normal displacement range, the terminal stud has a crimping fault. Therefore, the system judges that the wiring terminal of the to-be-detected mutual inductor is failed in crimping with the wiring end, automatically identifies the crimping fault of the wiring end, and improves the operation efficiency of an assembly line.

The utility model relates to the technical field of detection equipment, in particular to air tightness detection equipment of an FTU box body. Comprising a base, four guide supports arranged on the base, a fixing seat arranged on the guide supports, a sealing cover arranged on the base, a telescopic air cylinder arranged on the fixing seat, a vacuum opening formed in the base, an air pressure detection hole formed in the base and a sealing clamping groove formed in the upper end face of the base. The sealing piece is arranged on the upper end face of the base and comprises a sealing block fixedly arranged on the base, a deformation opening formed in the middle of the upper end of the sealing block, two sealing end bodies formed on the sealing block and two concave open grooves formed in the left end face and the right end face of the sealing block. And the other block body also can provide a sealing effect, so that a tiny leakage gap is not easy to form on a sealing interface, and the measurement result of the air tightness is not easy to influence.

The present invention discloses a patch device for semiconductor chip processing, which relates to the field of semiconductor chip processing, including a workbench and a bracket, a material box is installed on the workbench, a bracket is fixed on the workbench, and a gluing mechanism is fixed on the bracket. The patch device for semiconductor chip processing adopts an automatic gluing structure, which can realize the continuous automatic gluing of the chip. Specifically, the positioning plate is driven downward by the first cylinder. When the positioning plate is fitted with the chip, the first cylinder continues to extend, and the barrel and the gluing plate can be moved in cooperation with the action of the connecting rod and the slider, thereby realizing the automatic gluing action. In the gluing process, the piston, the cylinder, the air inlet check valve and the air outlet check valve on the cylinder are cooperated to allow the cylinder air to enter the barrel. By increasing the internal air pressure of the barrel, the glue inside the barrel can be more easily discharged, thereby ensuring the normal gluing.

The utility model relates to the technical field of gas turbines, and discloses a fuel supply adjusting device for a gas turbine, which comprises a bottom plate, vertical rods are fixedly mounted at four corners of the top of the bottom plate, a cylinder is movably sleeved on the outer surface of each vertical rod, and a lifting plate is fixedly sleeved on the outer surface of each cylinder. By arranging the lifting plate, the movable shaft, the gear and the tooth plate, an operator can start the pneumatic cylinder to enable the connecting plate to drive the tooth plate to move leftwards, then the tooth plate can drive the gear to rotate, the gear can drive the movable shaft to rotate, and then the rotating rod can rotate; and therefore, a hinge rod can push a lifting plate to move upwards, an oil supply device body and a second valve can ascend, an oil outlet pipe can ascend, butt joint with gas turbines of different sizes can be achieved, and the use flexibility of the device is improved.

The utility model belongs to the technical field of forging part surface oxide layer cleaning, and particularly relates to a metal forging oxide skin cleaning device which comprises a base. Two pneumatic cylinders are installed on the base, pneumatic rods are assembled at the acting ends of the two pneumatic cylinders, fixing plates are fixedly connected to the top ends of the two pneumatic rods, a shell is fixedly connected between the two fixing plates, a rotating shaft is rotatably installed in the shell, a rotating cylinder is sleeved on the rotating shaft, a first motor is installed on the side wall of the shell, and a second motor is installed on the side wall of the shell. The output end of the first motor is connected with one end of a rotating shaft, and four mounting seats are fixed on the circumferential surface of the rotating cylinder; when the device is used, the polishing and cleaning wheel can be conveniently and rapidly replaced, the working efficiency is greatly improved, the distance between the two conveying carrier rollers can be adjusted according to needs, the conveying and cleaning requirements of different forged steel columns are met, and the use range of the device is greatly widened.

A pump body structure includes: an air inlet cylinder, an air inlet cavity being arranged inside the air inlet cylinder, and an air return hole being arranged in a bottom portion of the air inlet cylinder; a liquid inlet cylinder connected to the bottom portion of the air inlet cylinder; a lower cover connected to the bottom portion of the air inlet cylinder, a cavity being defined by the lower cover, an outer side wall of the liquid inlet cylinder and a bottom wall of the air inlet cylinder, and an air return channel being reserved between the lower cover and the liquid inlet cylinder; and an elastic stop valve arranged in the cavity, the elastic stop valve being configured for elastically covering a bottom portion of the air return hole.

The invention discloses a control strategy for reducing NH3 emission of a hydrogen-ammonia engine. The control strategy comprises the steps that the rotating speed, the load, the pressure in an air cylinder, the air flow entering the air cylinder, the hydrogen injection amount, the ammonia injection amount and the exhaust temperature of the engine are monitored in real time; the maximum value of the in-cylinder pressure at the moment is calculated from a cylinder pressure model according to the rotating speed and the load of the engine, the maximum value of the in-cylinder temperature at the moment is calculated from an exhaust model according to the exhaust temperature detected by a sensor in front of a catalytic converter, and the in-cylinder air-fuel ratio at the moment is calculated according to the hydrogen injection amount, the ammonia injection amount and the air flow; an unburned ammonia model is established according to the characteristics affecting ammonia emission, and the unburned ammonia proportion at the moment is calculated through the unburned ammonia model; according to the size of the ammonia unburned proportion, the ammonia emission risk at the moment is recognized; and the maximum value of the hydrogen-ammonia injection amount is calculated through the ammonia leakage limiting coefficient, the theoretical air-fuel ratio and the air inflow and used for restraining the total hydrogen-ammonia injection amount. And the unburned ammonia proportion of the ammonia gas in the air cylinder can be effectively controlled.

The invention relates to the technical field of aircraft thunder and lightning tests and protection, and discloses an aircraft thunder and lightning small test pneumatic discharge device which comprises a pneumatic transmission unit, a thunder and lightning waveform discharge unit and a residual charge discharge unit. The pneumatic transmission unit comprises an air compressor, an air inlet valve, an air storage tank, a pressure regulating valve, an electromagnetic valve driving unit, a main path pneumatic pipeline, a control valve I, a control valve II, a pneumatic cylinder I and a pneumatic cylinder II, and the lightning waveform discharge unit comprises a high-voltage discharge switch I, a high-voltage discharge electrode I and a trigger electrode. The residual charge discharging unit comprises a second high-voltage discharging switch, a first discharging resistor and a second discharging resistor, the discharging device of the mobile aircraft lightning test equipment can achieve high-quality discharging of the maximum 200kV and the maximum 200kA, meanwhile, the safety of an aircraft lightning test can be guaranteed, the designed high-voltage discharging electrode is small in size and convenient to install, and the discharging device of the mobile aircraft lightning test equipment is convenient to use. And interference of a strong electromagnetic environment in the square cabin can be avoided by adopting air pressure transmission.

The invention discloses auxiliary mechanical arm welding equipment for a high-rise building steel structure, and relates to the technical field of welding, the auxiliary mechanical arm welding equipment comprises an operation structure, and a position fixing mechanical arm and a welding mechanical arm are arranged at the two ends of the operation structure correspondingly; the welding mechanical arm comprises a double-shaft pneumatic cylinder installed on an operation structure, two guide rail pieces connected with the two piston ends of the double-shaft pneumatic cylinder, two missing gears slidably connected with the interiors of the two guide rail pieces, and a multi-direction welding assembly installed in one missing gear. The welding mechanical arm composed of the two guide rail pieces, the two missing gears, the multi-direction welding assembly, the double-shaft pneumatic cylinder and other structures is matched with ground equipment, welding work of steel structures of various shapes can be automatically completed, the high-altitude construction difficulty of workers is reduced, and potential safety hazards of high-altitude steel structure welding construction are reduced.

The utility model belongs to the technical field of cable recovery, and particularly relates to a wire stripping device which comprises a base. A supporting frame is fixedly connected to the base, a pneumatic cylinder is mounted on the supporting frame, a pneumatic rod is assembled at the acting end of the pneumatic cylinder, a mounting frame is fixedly connected to the bottom end of the pneumatic rod, a cutter is rotationally mounted in the mounting frame in a matched mode through a rotating shaft, and a motor is mounted on the side wall of the mounting frame. The output end of the motor is connected with one end of the rotating shaft, two fixing seats are fixedly connected to the mounting frame, scrapers are hinged to the two fixing seats, and the two scrapers are located on the two sides of the cutter respectively; according to the utility model, in the cutting and stripping process, the spring is arranged, so that the scraper plate is always contacted with the cutter, thereby being capable of scraping off the sizing material adhered to the surface of the cutter, ensuring the sharpness of the cutting blade, further being capable of better cutting and stripping the cable, and greatly improving the stripping effect.

The invention discloses a warpage marking device, and relates to the technical field of glass substrate warpage detection, the warpage marking device comprises a detection equipment main body, the middle position of the detection equipment main body is fixedly connected with a detection table, a driving pneumatic cylinder is installed above the detection table, and the output shaft end of the driving pneumatic cylinder is provided with a detector; the detector is located at the eccentric position above the substrate main body, so that detection is not limited to the central area of the plate, the surface of the substrate main body can be completely covered, more accurate surface data feedback analysis is achieved, the surface integrity of the substrate main body can be evaluated more accurately, and meanwhile the detection accuracy is improved through dynamic adjustment of the detection area in the process. Different detection positions of the detector are increased while the irradiation range of the detector is reduced, so that each part of the substrate can be subjected to uniform and sufficient detection feedback, the problem that in a traditional method, light is excessively focused on a central area and detection of an edge area is insufficient is solved, and uniform distribution and comprehensive coverage of detection light are ensured.

The utility model relates to the field of film laminating machines, and discloses a temperature laminating and baking film laminating machine which comprises a supporting base, a conveying belt mounted on the supporting base, a heating box, a mounting frame, a film winding drum and a slitting assembly, wherein the heating box and the mounting frame are mounted on the supporting base, and the film winding drum and the slitting assembly are mounted on the mounting frame. Air cylinders are installed on the front side and the rear side of the inner wall of the heating box correspondingly, and the output ends of the air cylinders are provided with material guiding assemblies extending out of the heating box. The hot-pressing device has the following advantages and effects that when a film-coated material enters the heating box to be subjected to hot pressing, the driving assembly is started to drive the hot-pressing assembly to move front and back, the film-coated materials with different widths can be subjected to hot pressing, meanwhile, the adjusting assembly is used for adjusting the distance from the lower surface of the hot-pressing assembly to the upper surface of the film-coated material, and the hot-pressing efficiency is improved. And the hot pressing assembly can be tightly attached to the laminated materials with different thicknesses to conduct hot pressing on the laminated materials, laminating and hot pressing can be conveniently conducted on the materials with different sizes, and the applicability is higher.

The present invention relates to a full-automatic wire harness crimping machine for automobile wire harness connection, comprising a base frame and a support plate, the support plate being installed on the base frame, and a straightening mechanism used for straightening wire harnesses having different wire diameters and a wire harness treatment mechanism used for stripping and slitting wire harnesses having different wire diameters being installed on the support plate; a material moving mechanism, a terminal vibration disc used for discharging terminals and a terminal discharging device are installed on the base frame; a crimping mechanism used for crimping terminals and wire harnesses is installed in the base frame. A first pneumatic cylinder operates to drive a lifting / lowering plate to ascend and descend, and then drive a shaft sleeve to ascend and descend along a polygonal shaft, so as to adjust the position of a straightening wheel; at the moment, wires pass through a first wire tube, the straightening wheel and a second wire tube, a first motor operates to drive a driving gear to rotate, and transmission gears are driven to rotate by means of meshing transmission between the gears, so as to enable the shaft sleeve and the straightening wheel to rotate; and at the moment, the straightening mechanism completes straightening and conveying of wires having different wire diameters.

The invention relates to the technical field of steel cylinder detection, and discloses a steel cylinder airtightness detection device which comprises a detection seat, a guide cylinder fixedly mounted on one side of the upper end of the detection seat, an L-shaped frame mounted in the guide cylinder, an air pressure detection mechanism arranged at the upper end of the L-shaped frame, and a rotating shaft rotatably mounted on the detection seat. The bottom of the rotating shaft penetrates through the inspection seat and is provided with a lifting mechanism used for driving the air pressure inspection mechanism to work, a rotating cylinder is rotatably installed at the upper end of the rotating shaft, a rotating round block is fixedly installed at the upper end of the rotating cylinder, an inspection shaft is fixedly installed on the rotating round block, and an inspection table is fixedly installed at the upper end of the inspection shaft. A plurality of pool barrels are arranged at the edge of the upper end of the inspection table, steel cylinders to be inspected are placed in the pool barrels, and a rotating mechanism used for driving the rotating table to move is further arranged on the inspection base. According to the invention, the time loss caused by shutdown for loading and unloading the steel cylinders during each inspection is avoided, and the requirement of continuous airtight inspection of large-batch steel cylinders is met.

The utility model discloses a flange plate machining device for valve machining, and relates to the field of valve machining. The device comprises a device table and an inner clamping piece, the device table comprises an outer shell box and first pneumatic cylinders, the first pneumatic cylinders are evenly and circumferentially arranged at the top of the outer shell box, the inner clamping piece comprises second pneumatic cylinders, abutting heads, an inner ring and a moving device, the second pneumatic cylinders are arranged in the outer shell box, and the abutting heads are arranged at the top of the outer shell box. The inner ring is arranged above the second pneumatic cylinder, the abutting head penetrates through the top of the inner ring, the moving device is arranged outside the inner ring, and a power motor is arranged outside the second pneumatic cylinder. The flange plate fixing device has the improvement points that firstly, the interior of the flange plate can be stably and accurately fixed in a fixing mode controlled by the power motor, the problem of unstable fixing force caused by factors such as spring fatigue and external environment change is solved, and therefore the machining precision and the connecting quality are improved;

The invention provides a hydrodynamic actuator which comprises a piston cylinder, a piston, a piston rod for connecting the piston and the outside of the piston cylinder, and a cylindrical piston cylinder sleeve, the piston cylinder sleeve is connected to the outer side of the piston cylinder in a sleeving mode from the first piston cylinder end cover. A sealing piece matched with the inner wall of the piston cylinder sleeve is arranged on the outer wall of the piston cylinder and / or the first piston cylinder end cover; the piston rod penetrates through the first piston cylinder end cover of the piston cylinder and is fixedly connected with the bottom of the piston cylinder sleeve; a first driving fluid cavity is formed between the piston and the first piston cylinder end cover; a second driving fluid cavity is formed between the first piston cylinder end cover and the piston cylinder sleeve; a fluid rotation cavity is formed between the piston and the second piston cylinder end cover. The technical scheme can be widely applied to the field of force transmission components such as hydraulic cylinders and pneumatic cylinders.

The utility model belongs to the technical field of hydraulic engineering, and discloses a pipeline cleaning device for hydraulic engineering, which comprises a vertical plate, a round block is movably sleeved in the top end of the vertical plate, and a cross rod is fixedly sleeved in the round block. According to the pipeline cleaning device, the moving block, the first hinge rod, the cleaning brush and the second hinge rod are arranged, an operator inserts the cross rod into a pipeline, the pipeline and the cross rod are kept on the same axis, then the first pneumatic cylinder is started, the first pneumatic cylinder can drive the moving block to move leftwards, and therefore the first hinge rod can push the cleaning brush outwards; a first hinge rod is matched with a second hinge rod, so that a cleaning brush can move outwards while keeping horizontal so as to be attached to the inner walls of pipelines of different sizes, then an operator starts a first motor, a circular shaft drives a transverse rod to rotate, and therefore the cleaning brush can clean the pipelines of different sizes; and the use of operators is facilitated.

The utility model relates to the technical field of emulsion drilling machines, and provides a movable frame column type emulsion drilling machine for a coal mine, which comprises a bottom plate, vertical rods are fixedly connected to four corners of the top of the bottom plate, and telescopic rods are movably sleeved in the vertical rods; and the bottom of the fixing plate is fixedly connected with the top of the telescopic rod, and a rotating rod is movably connected into the middle of the fixing plate in a sleeved mode. Through the arrangement of the rotating rod, the rotating plate, the sleeve rod, the first round rod and the first rotating rod, when the first pneumatic cylinder starts to operate, the sleeve rod horizontally moves leftwards, the first round rod rotates under the limiting effect of the sleeve rod, and therefore the first rotating rod drives the rotating rod to rotate, and then the rotating plate rotates; and finally, the drilling angle of the drill bit is changed, the purpose of adjusting the drilling angle is achieved, the stability in the drilling operation process is guaranteed, and the drilling efficiency is improved.

The utility model belongs to the technical field of metal plate bending, and particularly relates to a metal plate bending device which comprises a base. Four stand columns are fixedly connected to the base, a supporting plate is fixedly connected to the top ends of the four stand columns in a matched mode, a placing table is installed on the base, a first pneumatic cylinder is installed on the supporting plate, a first pneumatic rod is assembled at the acting end of the first pneumatic cylinder, and a first fixing frame is fixedly connected to the bottom end of the first pneumatic rod. Rotating plates are rotationally installed on the two side walls of the first fixing frame, pressing rollers are rotationally installed at the bottom ends of the two rotating plates in a matched mode, an upper bending mold is rotationally installed at the top ends of the two rotating plates in a matched mode, two positioning holes are formed in the rotating plates, and screw rods are inserted into the positioning holes in a penetrating mode; when the metal plate bending device is used, curved surface bending and right-angle bending can be conveniently and alternately replaced, bending treatment of a curved surface and a right angle of a metal plate can be completed without replacing equipment back and forth, and the bending efficiency is greatly improved.

The utility model relates to the technical field of pseudo-boehmite, and discloses a pseudo-boehmite carbonization device which comprises a bottom plate, and a reaction kettle is fixedly mounted at the top of the bottom plate. Through the arrangement of the through hole, the sealing plug, the movable rod and the push rod, an operator can input carbon dioxide into the gas storage tank through the gas inlet pipe, due to the fact that the capacity of the gas storage tank is fixed, the input amount of the carbon dioxide can be controlled, and the operator can start the pneumatic cylinder to start the gas storage tank. A pneumatic cylinder pulls a fixed block and a push rod to move upwards, so that the push rod can extrude and push a movable rod to move leftwards, the movable rod drives a connecting rod to move leftwards through a side plate and a mounting plate, a sealing plug is separated from the interior of a through hole, and sealing of the through hole is relieved; therefore, carbon dioxide can enter the reaction kettle through the through hole, the connecting box and the round pipe.

The utility model discloses a pretreatment device for rim processing, which relates to the technical field of rim processing, is suitable for polishing the surface of a rim, and comprises a workbench, the clamping unit is arranged on the upper surface of the workbench; the adjusting assembly is arranged on the upper surface of the workbench and used for driving; and the grinding unit is arranged on the outer surface of the adjusting assembly and used for grinding, and the clamping unit comprises a lifting assembly arranged on the inner wall of the workbench and a clamping assembly arranged on the outer surface of the lifting assembly. According to the rim machining device, a first hydraulic cylinder, a mounting plate, a pneumatic air cylinder, a supporting frame, a forward and reverse motor and a clamping plate are matched with one another, so that a rim can be clamped conveniently, meanwhile, the rim can be turned over according to requirements, the flexibility of the rim machining device is improved, and the driving motor, a lead screw, a limiting sliding rod and a moving block are matched with one another, so that the machining efficiency is improved. And the grinding unit can be conveniently driven to move in the horizontal direction, so that the practicability of the pretreatment device for rim machining is improved.

A telescopic seat post for a bicycle includes inner and outer tubes, a pneumatic cylinder inserted in the inner and outer tubes, and a closing set. The outer tube is provided at the bottom end thereof with an installation portion. The inner tube is telescopically inserted in the outer tube. The pneumatic cylinder is provided at the top end thereof with a control stem. The bottom end of the pneumatic cylinder is located in the installation portion. The closing set includes an elastic supporter and a rigid supporter. One of the elastic and rigid supporters is removably installed in the installation portion to provide an upward supporting force to the pneumatic cylinder. As a result, the telescopic seat post is selectable between having shock absorption effect and having no shock absorption effect by the rider through component replacement, and the component installation and replacement is easy.

To provide a fully automatic wire harness crimping machine for connecting automotive wire harnesses.SOLUTION: A fully automatic wire harness crimping machine includes a frame and a support plate. The support plate is mounted on the frame, a straightening mechanism for straightening wire harnesses with different wire diameters and a wire harness processing mechanism for stripping and cutting sheaths of wire harnesses with different wire diameters are mounted on the support plate, a transfer mechanism, and a terminal vibrating bowl and terminal feeder for supplying terminals are mounted on the frame, and a crimping mechanism for crimping the terminals and the wire harnesses is attached inside the frame. A first pneumatic cylinder is operated to raise and lower a raising / lowering plate, thereby raising and lowering a bush along a polygonal axis, and adjusting the position of a straightening wheel. At this time an electric wire is passed through a first wire tube, the straightening wheel, and a second wire tube, a drive gear is rotated by the operation of a first motor, and a transmission gear is rotated by meshing transmission between gears to achieve the rotation of the bush and the straightening wheel, and at this time the straightening and transport of electric wires with different wire diameters are completed by the straightening mechanism.SELECTED DRAWING: Figure 1