5751results about How to "Reduce friction" patented technology

The invention relates to the technical field of carton stacking, and discloses a carton production stacking device which comprises a mechanical arm, the output end of the mechanical arm is rotationally connected with a sliding seat, and the inner surface of the sliding seat is slidably connected with a sliding plate through a sliding block. The distance between the telescopic suction cups is changed, so that the adsorption stability of the telescopic suction cups to cartons of different sizes is improved, a first sealing plate and a second sealing plate block the bottoms of the telescopic suction cups, and the situation that in the placing process of the device, dust adheres to the telescopic suction cups, and the adsorption effect of the telescopic suction cups is affected is prevented; and a rotary hook lock resets and clamps a clamping shaft, the situation that dust enters a protection frame from a gap and is attached to the telescopic suction cup due to the gap between a first sealing plate and a second sealing plate is avoided, and then the protection effect on the telescopic suction cup is improved.

The invention discloses a laser cutting device for kitchenware production, and relates to the technical field of kitchenware production, the laser cutting device comprises a fixed frame, a supporting frame is fixedly mounted at the bottom of the fixed frame, a plurality of placing frames are fixedly mounted on the inner side of the fixed frame, the laser cutting device further comprises a movable frame and a laser cutting device, the movable frame is arranged above the fixed frame, and a movable seat is arranged above the interior of the movable frame; a U-shaped frame is fixedly installed at the bottom of the movable seat, an electric push rod is fixedly installed in the U-shaped frame, meanwhile, a disc is fixedly installed at the movable end of the electric push rod, guide rods are symmetrically installed at the top of the disc, the two sets of guide rods are both slidably connected with the U-shaped frame, and a laser cutting head is fixedly installed at the bottom of the disc; the top of the cutting position can be cleaned after the plate is cut, attached slag can be cleaned down, the subsequent grinding and cleaning step is omitted, the influence on subsequent kitchen ware plate machining is avoided, and the production efficiency of kitchen ware is improved.

The invention discloses a detection method for plastic packaging bag production, and relates to the technical field of plastic packaging bag production, and the detection method specifically comprises the following steps: 1, placing a plastic packaging bag on a detection table, enabling an upper clamping plate and a transverse plate to move downwards, enabling the upper clamping plate to firstly contact with the packaging bag, and carrying out preliminary positioning; 2, after the pressing plate makes contact, an adjusting plate makes contact with the packaging bag and pushes the packaging bag to move towards the two sides, and stretching, unfolding and flattening are achieved through assistance of balls; 3, the upper clamping plate continues to move downwards, the extension plate makes contact with the fixed plate and is limited, the position of the pressing plate is determined, then a first air cylinder is started to drive a movable plate to move towards one side, and a control assembly on the movable plate drives the to-be-tested plastic packaging bag to be subjected to a stretching test. According to the detection method for plastic packaging bag production, the plastic packaging bag is stretched, unfolded and flattened through the adjusting plate, it can be ensured that the packaging bag is in a flat state in the detection process, and therefore the real physical performance of the packaging bag can be reflected more accurately.

The invention provides a cable insulation performance detecting and repairing device and method. The cable insulation performance detecting and repairing device comprises a cable laying device, a detecting mechanism, a repairing mechanism and a cable collecting device. The cable laying device is used for stably releasing a to-be-detected cable. The detection mechanism is used for detecting cable insulation performance and comprises a detection ring, a first driving device and an electric leakage detection device, and insulation defects are positioned by rotating the detection ring and acquiring electric leakage current signals; the repairing mechanism comprises a gluing mechanism and a drying box, the gluing mechanism is used for coating glue to the cable through the glue injection device and the gluing device after the damage point is detected, and the drying box accelerates repairing and solidifies the glue; and the cable take-up device is used for taking up the repaired cable. The automatic and cooperative work of all mechanisms in the whole device greatly improves the speed and quality of cable insulation performance detection and repair, avoids the problem of uneven repair or leak detection caused by misoperation or low efficiency in traditional manual operation, and remarkably improves the safety, reliability and construction efficiency before cable construction.

The invention relates to the field of metal surface treatment, and discloses a multi-layer vacuum coating method for enhancing the surface of a high-precision metal part, which comprises the following steps: S1, surface treatment: removing surface pollutants and oxide layers through plasma cleaning, and coarsening the surface of a base material through laser etching; s2, coating deposition is conducted, specifically, a metal transition layer and a multi-layer nano hard coating are deposited in an enhanced mode through plasma; s3, depositing a self-lubricating coating: depositing the self-lubricating coating by pulse laser; s4, post-treatment: carrying out ion beam assisted post-treatment; s5, heat treatment: performing low-temperature heat treatment to eliminate stress. Through the plasma enhanced PVD and pulse laser deposition technology, the multi-layer nano coating is deposited under the low-temperature condition, the problem of thermal deformation of a heat-sensitive metal base material caused by a traditional high-temperature process is solved, and it is ensured that the multi-layer coating with high hardness and high compactness can still be formed on the premise that the size precision of the base material is not affected; and therefore, the method can be widely applied to surface treatment of high-precision parts.

The present invention relates to the field of grain transport technology, and in particular to an agricultural grain transport device, comprising a base, a shell fixedly installed on the top of the base, a feed hopper and a discharge hopper respectively arranged at both ends of the shell, a cylindrical screen arranged inside the shell, a refrigeration mechanism arranged inside the shell, a mounting plate fixedly installed on the side of the discharge hopper away from the shell, a motor fixedly installed on the top of the mounting plate, a rotating shaft fixedly connected to the output end of the motor, and a spiral hollow disk and a solid disk fixedly connected to the outer wall of the rotating shaft. The advantages are: the inside of the shell maintains a low temperature, the low temperature helps to increase the hardness difference between grain and impurities, improve the efficiency of impurity screening, reduce the stickiness between grains, ensure the smooth flow of grain, the screen effectively screens out impurities in the grain, improves the purity of the grain, pushes the grain in layers, prevents excessive accumulation of grain, and reduces the damage of grain due to friction and extrusion.

The utility model discloses an intellectualized safety control take-up straining device, including handle subassembly, base subassembly and long braid, handle subassembly includes handle and ratchet wheel, base subassembly includes base, handle and base are pivoted and rotatingly connected through take-up shaft, ratchet wheel is fixed on take-up shaft, and the winding drum is fixed between the ratchet wheel, and the long braid is fixed on the base. The ratchet wheel, the winding drum and the tape winding shaft rotate synchronously, the winding drum is sleeved outside the tape winding shaft and is coaxially arranged, an opening for the long braid to pass through is arranged on one side of the winding drum, one end of the long braid is sleeved on the tape winding shaft and is led out from one end of the base through the opening on the winding drum, one end of the tape winding shaft is connected with the coil spring assembly, and the coil spring assembly comprises a coil spring, a coil spring box and a coil spring box cover. The coil spring box is covered with the coil spring box, a brake assembly is further arranged in the coil spring box, and one end of the tape winding shaft can be provided with a C-shaped opening, an eccentric shaft or a concentric screw hole according to the structure of the brake assembly. According to the utility model, the long braid can be prevented from swinging to hurt an operator, and the personal safety of the operator is guaranteed.

The invention relates to the technical field of rotary mounting tools, in particular to a rotary mounting tool for a gas tank of a gas-insulated switchgear, which comprises a bottom fixing frame body and a left fixing frame body fixed above the left side of the bottom fixing frame body, a right moving frame body is connected to the upper portion of the right side of the bottom fixing frame body. Ball screws are mounted in the middle parts of the left fixed frame body and the right movable frame body; one side surface of the rotary support plate is connected with a main clamp mechanism for clamping the left side surface and the right side surface of the gas tank of the gas-insulated switchgear; two sets of bottom supporting plates used for supporting the bottom face of the gas tank of the gas-insulated switchgear are symmetrically installed below the rotary carrying plate through self-adjusting frames, and side supporting plates used for clamping the front side face and the rear side face of the gas tank of the gas-insulated switchgear are fixed to the upper portions of the horizontal planes of the bottom supporting plates. According to the rotary mounting tool for the gas tank of the gas-insulated switchgear, clamping force can be applied to multiple side faces of the gas tank of the gas-insulated switchgear, the clamping stability of the gas tank of the gas-insulated switchgear during rotation in the later period can be guaranteed, and the rotary mounting tool can conveniently and well drive the gas tank of the gas-insulated switchgear to rotate.

The linear guide rail with the cooling structure comprises a guide rail body and a sliding block, a sliding groove is formed in the sliding block, the sliding block is arranged on the guide rail body in a sliding mode through the sliding groove, the guide rail body is installed on a gasket, a first installation groove in the length direction of the guide rail body is formed in the surface of the gasket, and a cooling pipe is arranged in the first installation groove. An air cooling structure is further arranged in the sliding block. According to the utility model, the cooling pipe is laid on the gasket, and the circulating cooling liquid is introduced into the cooling pipe to cool the guide rail above the cooling pipe; an air cooling structure is further arranged in the sliding block, the sliding block is cooled in the movement process of the sliding block, power in a certain direction can be increased for the sliding block by closing an air outlet in the front end or the rear end of the air cooling structure, and the movement speed of the sliding block is increased.

The invention relates to the technical field of welding devices, in particular to an aluminum alloy door and window welding machine which comprises a mounting support, an air cylinder is mounted at the upper end of the mounting support, an output shaft of the air cylinder penetrates through the mounting support, and a welding mechanism is mounted on the output shaft of the air cylinder and comprises a first mounting plate fixedly connected with the output shaft of the air cylinder. An exhaust mechanism is mounted on the other side of the first mounting plate, four sets of first electric telescopic rods are mounted on the inner side of the mounting support, clamping mechanisms are mounted on output shafts of the first electric telescopic rods, and welding seams between arc-shaped window frames can be welded through mutual cooperation of second electric telescopic rods and first welding heads; and welding can be conducted on inner side welding seams of the assembling grooves, welding is more comprehensive, connection between the arc-shaped window frames is more stable, through mutual cooperation of a fourth gear and a third electric telescopic rod, comprehensive cleaning is conducted on the peripheries of the welding seams, cracks and bubbles during welding are avoided, and the welding seams are firmer.

The invention belongs to the technical field of metal stamping dies, and particularly relates to a metal stamping die demolding structure which comprises a stamping base, a stamping frame fixed to the surface of the stamping base and a stamping hydraulic cylinder fixed to the surface of the stamping frame. A stamping base is arranged over the stamping die, a lubricating top die assembly is arranged above the stamping base, the lubricating top die assembly is arranged, lubricating oil can be smeared and sprayed to the surface of the stamping base and the interior of the stamping die, and therefore the friction force between the surface of the stamping base and the interior of the stamping die in the subsequent stamping process is reduced; the phenomenon that metal raw materials are damaged due to friction caused by forced stamping without lubrication is avoided, demolding after the metal raw materials are stamped is also facilitated through the lubrication effect, a metal blank formed through stamping can be pushed to be loosened, the rapid demolding effect is achieved, manual demolding is not needed, the labor intensity of manual demolding is reduced, and the demolding efficiency is improved.

The invention relates to the technical field of industrial equipment monitoring, and discloses a monorail crane lubrication on-line monitoring analysis system and method, and the system comprises a sensor module, a data processing and analysis module, a fault early warning module, a lubrication management optimization module, a data communication and display module, an oil path control module, and an electric power and connection module. The sensor module is used for collecting cleanliness, viscosity, water activity, moisture content, density and temperature of lubricating liquid of the hydraulic system of the monorail crane in real time; the sensor module comprises a sensor array, and the sensor array comprises a GYD12 mining intrinsic safety type multi-parameter oil liquid sensor, a temperature sensor, a pressure sensor, a flow sensor and a pollutant sensor. Through the data processing and analyzing module, the system can continuously track the state of lubricating oil, the timeliness of data is ensured, the dependence on manual inspection is greatly reduced, it is ensured that equipment can find and process abnormities in time in the operation process, and large faults caused by small problems are avoided.

The utility model discloses a bend pipe processing clamping piece, relates to bend pipe clamping technical field, including bottom plate, two slide block that the outer surface of two guide rail is in slide connection, the inner side of two slide groove is in slide connection with chuck, the inner wall of slide block is in slide connection with press plate, the other side of press plate is in threaded connection with locking bolt, and the locking bolt is in threaded connection with the locking bolt. The outer surface of the locking bolt is rotationally connected with the inner side of the sliding block, a positioning mechanism is arranged outside the locking bolt, through cooperation among the sliding groove, the pressing plate and the locking bolt, the pressing plate can be pushed to slide by rotating the locking bolt, the pressing plate has the function of sliding up and down, the pressing plate makes contact with the chuck after sliding downwards, movement of the chuck can be limited, and the clamping effect is good. The clamping head is limited in the sliding groove, the locking bolt is rotated in the reverse direction to drive the pressing plate to slide, fixing limitation on the clamping head can be relieved, then the clamping head is taken out of the sliding groove to be replaced with the clamping head of the needed specification, the replacement efficiency of the clamping head is improved, and the production efficiency is further improved.

The invention belongs to the technical field of fabric dyeing and finishing, and particularly relates to padding equipment for dyeing and finishing polyester fabric, which comprises a workbench, side edge plates are symmetrically arranged on the workbench, the two side edge plates are jointly connected with a rotating shaft, one end of the rotating shaft is provided with a rotating square groove, and the rotating square groove is connected with the output end of a rotating motor. The rotating motor is provided with an inserting-stopping assembling and disassembling assembly. A rotating cam is mounted at the other end of the rotating shaft, and a multi-cycle position correcting mechanism is connected to the rotating cam; the rotating shaft is further provided with a position adjusting and distance locking device. The position adjusting distance locking device comprises a distance adjusting square groove formed in the side edge plate in a penetrating mode. According to the device, fabric adhering to the driving roller is scraped through the movable scraping unit, the situation that the fabric is too dry due to the fact that the fabric is squeezed by two rollers all the time is avoided, and therefore the situation that workers need to manually remove the adhered fabric is avoided, the risk when the workers operate equipment is reduced, the phenomenon that the workers are injured by the rolling mill is avoided, and the working efficiency is improved. And therefore, the safety of the equipment during use is improved.

The invention relates to the technical field of composite materials, in particular to fiber sizing liquid, a polyether-ether-ketone composite material and a preparation method of the polyether-ether-ketone composite material, and the fiber sizing liquid comprises low-molecular-weight polyaryletherketone containing imide side groups, carbon nanotubes and the like; the composite material is obtained by carrying out heat treatment on fibers, re-sizing the fibers by adopting the sizing liquid, and then carrying out melt extrusion on the fibers and polyether-ether-ketone. The sizing liquid provided by the invention can effectively improve the compatibility between fibers and PEEK, so that the mechanical properties of the composite material are obviously improved.

The utility model discloses an adjustable large-span steel drilling tool, relates to the technical field of steel drilling, and aims to solve the technical problems that the front-back position of current steel is inconvenient to adjust, and dislocation drilling work is affected. The adjustable large-span steel drilling tool comprises a base, and a drilling mechanism and a conveying mechanism are fixedly arranged on the upper surface of the base; clamping assemblies are fixedly arranged on a front frame and a rear frame of the conveying mechanism respectively, clamping pieces are installed on the faces, close to each other, of the two clamping assemblies respectively, and a plurality of guiding pieces are fixedly arranged on the upper surface of a conveying belt of the conveying mechanism. The clamping assemblies and the clamping pieces are matched to clamp and fix the position of the steel, the position can be kept stable when the drilling mechanism drills the steel conveniently, deviation is prevented, and meanwhile the clamping assembly structures on the two sides are arranged so that the steel can be pushed forwards and backwards to move conveniently. The drilling machine has the advantages that the position of steel is flexibly adjusted, and drilling work at different positions is facilitated.

The invention relates to the technical field of wafer processing, and discloses a wafer rotary processing device which comprises a shell, a rotating mechanism for driving a wafer to rotate is arranged on the shell, a first motor for driving the rotating mechanism to rotate is arranged in the shell, the rotating mechanism comprises a rotating table, and multiple layers of negative pressure ring cavities are formed in the top of the rotating table. The bottom of the rotating table is provided with a liftable negative pressure generating mechanism, a lifting mechanism is arranged in the shell, the lifting mechanism drives the negative pressure generating mechanism to complete lifting action, the top of the lifting mechanism is provided with a positioning mechanism, and the positioning mechanism clamps a wafer in the radial direction through a shaft, so that the axis of the wafer coincides with the axis of the rotating table. The device realizes automatic positioning and fixing work before wafer processing, can replace a rotating mechanism in most wafer processing equipment, can be independently used as split type rotating equipment, and is more comprehensive and efficient.

The invention discloses an extrusion forming device for a photovoltaic aluminum profile frame, and particularly relates to the field of aluminum profile molding.The extrusion forming device comprises a base, a left supporting frame is fixedly connected to one side of the top of the base, an extruder is fixedly connected to the other side of the top of the base, and an extrusion head is arranged at the output end of the extruder; the side wall of the left supporting frame is connected with a mold through a locking mechanism, and an auxiliary mechanism for cleaning and oiling the extrusion head is arranged on one side of the locking mechanism. After the mold is replaced, in the process of controlling the mold to reset, the mold is synchronously fixed and limited through the fixed mold base, the mold replacement convenience is improved, meanwhile, a second threaded rod synchronously drives a connecting rod and an arc-shaped plate to rotate, cleaning of an extrusion head is completed, oil coating of the extrusion head is synchronously completed, and the mold replacement efficiency is improved. And the service lives of the fixed die holder and the extrusion head are prolonged.

According to the composite protective coating for the bolt surface, the preparation method and the application, the composite coating takes a bolt of a common model of an iron tower as a substrate, and a cathode arc ion plating technology and a magnetron sputtering technology are combined; the preparation method comprises the four main steps of substrate surface pretreatment, metal bonding layer preparation, metal nitride bearing layer preparation and surface molybdenum disulfide solid self-lubricating layer preparation. According to the method, reliable preparation of the composite coating on the complex thread surface of the bolt is achieved, the anti-loosening capacity of the bolt is remarkably improved through the low friction coefficient, good bearing capacity and excellent wear resistance, and meanwhile the composite coating further has good corrosion resistance and has wide application prospects in iron towers for communication, electric power and the like.

The invention provides a deep V-shaped ceramic matrix composite component forming device and method. The forming device comprises a bottom die, an outer die and an inner die. The outer die is connected to the bottom die; the inner mold is connected to the bottom mold, and the bottom mold, the outer mold and the inner mold are encircled to form a cavity for forming the deep V-shaped ceramic matrix composite component; wherein the inner die comprises a V-shaped main body die and a plurality of small-section dies connected to the V-shaped main body die, the plurality of small-section dies are arranged in the narrow opening position and are sequentially connected in the length direction, and the plurality of small-section dies are provided with die drawing angles in the length direction. The deep V-shaped ceramic matrix composite component can be formed and prepared, and demolding is convenient.

The invention relates to the technical field of charging sockets, and particularly discloses a charging seat, which comprises a fixed block, a socket and a dustproof cover, the main locking block is movably assembled on the socket along the radial direction of the plugging cavity; the unlocking button is movably assembled on the socket along the depth direction of the plugging cavity; the connecting rod is connected between the main locking block and the unlocking button; the labor-saving lever is mounted on the socket; the boosting block is arranged at the resistance end of the labor-saving lever and is movably assembled on the socket along the depth direction of the insertion cavity; the pushing plate is movably assembled in the insertion cavity along the depth direction of the insertion cavity; the diameter of the inserting cavity is larger than that of the charging gun head, the pushing plate is provided with a pushing inclined face used for pushing the main locking block to move out of the inserting cavity, and the main locking block is provided with a main locking face. According to the charging seat, smooth plugging and unplugging actions are realized, and the reliability of charging connection and the user experience are improved.

The utility model relates to the technical field of building construction, and discloses a material lifting mechanism for building a steel structure shed, which comprises a base, a lifting component is mounted at the top of the base, a lifting bin is fixedly connected to the top of the lifting component, a winding roller is rotatably connected to the inside of the lifting bin, a lifting rope is fixedly connected to the periphery of the winding roller, and the lifting rope is fixedly connected to the top of the lifting component. A mounting plate is fixedly connected to the outer wall of the hoisting bin, a motor is fixedly connected to the top of the mounting plate, a self-locking assembly is mounted in the middle of the mounting plate, a lubricating assembly is mounted in the middle of the hoisting bin, and an output assembly is mounted at the bottom of the mounting plate. According to the self-locking device, after the motor stops running, the self-locking assembly can rapidly trigger a locking mechanism, it is ensured that the lifting rope is firmly fixed through the friction effect of the self-locking wheel and the rubber ring and the cooperation of the clamping column and the spring, and the risk of loosening of the lifting rope or falling of materials can be effectively avoided even in unforeseen circumstances.

The invention relates to a sterilization type oxygen absorbent drying, mixing and vacuum packaging integrated system, and relates to the technical field of oxygen absorption master batch production, the sterilization type oxygen absorbent drying, mixing and vacuum packaging integrated system comprises two groups of dryers, a mixing machine, a vacuum generation system, an oil bath circulation system and a nitrogen supply system, the two groups of dryers comprise a first dryer and a second dryer; the dryer comprises a barrel, a swing driving mechanism and two swing shafts, the barrel comprises an inner shell and an outer shell, a heating cavity is formed between the inner shell and the outer shell, each swing shaft is provided with an oil inlet channel and an oil return channel, the outer shell is provided with a guide part in the heating cavity, and a heating channel allowing medium oil to flow is formed among the guide part, the inner shell and the outer shell. The heating channel forms a baffling section at the bottom of the inner shell, and medium oil can flow into the oil return channel along the heating channel and the baffling section. The medium oil flows from bottom to top, so that the medium oil with low temperature and high density is effectively prevented from being accumulated at the bottom of the barrel, materials are dried more uniformly by the medium oil, and the production efficiency of the oxygen absorbent is improved.

Provided is an environment-friendly mobile collecting box for decoration cutting dust. The mobile collecting box comprises a box body, wherein a water tank is fixedly mounted on one side of the bottomsurface of the inner wall of the box body, the bottom surface and the outer side of the water tank are fixedly connected to the inner wall of the box body separately, the inner side of the water tankis fixedly connected to one side of the box body, and openings are formed in the top surface and the other side of the box body; a first through hole is formed in the bottom of the inner side of theinner wall of the water tank, a switching valve is disposed in the first through hole, and a second through hole is formed in one side of the box body; the interior of the first through hole communicates with the interior of the second through hole, and the second through hole communicates with the interior of the box body; the top surface of the water tank is fixedly connected to one end of a hose, and the other end of the hose is arranged in the box body, and a floating plate is fixedly mounted on the periphery of the other end of the hose. Sediment in the box body can be pushed directly into the garbage bag through cooperative use of a mud box and a garbage bag, and the mud box can be taken and placed freely; after the mud box is taken out, a sealing cap of the garbage bag containing the sediment is removed, and after the garbage bag is replaced by a new garbage bag, the mud box is put back, and the sediment is not in contact with the mud box, and cleaning of the mud box by a user is not needed, so that time and labor are saved.

The invention relates to the technical field of cutting fluids, and discloses a high-temperature alloy cutting fluid and a preparation method thereof, the high-temperature alloy cutting fluid comprises the following components: 30%-50% of base oil, 5%-10% of organic alkali, 5%-10% of an antirust agent, 4%-10% of synthetic ester, 15%-20% of an anti-wear reagent at extreme pressure, 0.5%-1.5% of a corrosion inhibitor, 7%-15% of an emulsifier, 2%-4% of a bactericide, 0.05%-0.1% of a defoaming agent, and the balance of water; the extreme pressure anti-wear agent is composed of a chlorination extreme pressure anti-wear agent and a vulcanization extreme pressure anti-wear agent. According to the invention, the ester-based base oil, the organic alkali, the synthetic ester and the extreme pressure anti-wear agent composed of the chlorination extreme pressure anti-wear agent and the vulcanization extreme pressure anti-wear agent are combined to form a continuous high-strength lubricating film, and the continuous high-strength lubricating film is compounded with additives such as the organic acid antirust agent, the corrosion inhibitor and the bactericide; therefore, the antirust corrosion inhibition performance of the cutting fluid on workpieces and machine tools and the long-term use safety and environmental protection performance are improved during processing.

The invention relates to the technical field of mechanical transmission, and provides a connecting rod transmission mechanism and a mirror image engine. The connecting rod transmission mechanism comprises a power sliding block, a power connecting rod and two power pistons, the power connecting rod comprises a connecting rod base body and two linear rod parts, the linear rod parts extend in the first direction, the front end of each linear rod part is connected with one power piston, and the rear end of each linear rod part is fixedly connected with the connecting rod base body; the two linear rod parts are located on the two opposite sides of the connecting rod base body in the first direction, and the power sliding block is installed on the connecting rod base body in a sliding mode in the second direction. The linear rod part does not need to contain a bearing, rotation motion does not exist, the overall cross section is uniform or roughly uniform, standard sinusoidal motion / cosine motion is met, the size reduction design of the linear rod part and the air cylinder is facilitated, the compression ratio in the air cylinder is increased, the combustion efficiency is improved, the overall structure of the engine is more compact, and the needed engine cabin space is reduced. And the power-to-weight ratio and the acceleration performance of the vehicle can be improved.

The invention belongs to the technical field of medical instruments, and discloses a stent implantation system which comprises a first catheter, a second catheter and a filter, and the first catheter can be sleeved with a stent; the second guide pipe penetrates through the first guide pipe; the filter penetrates through the second guide pipe and comprises a filter body, and the filter body has a folded state and an unfolded state; in the folding state, the filter body penetrates through the second guide pipe; in the unfolded state, the filter body is located outside the second guide pipe, and the first guide pipe can squeeze and store the unfolded filter body. According to the stent implantation system, plaque escape in the operation process is effectively prevented, and the embolism risk is reduced.

The invention provides a laser cutting jig and laser cutting equipment, and belongs to the technical field of laser cutting. The laser cutting jig comprises a cutting table and supporting legs, a sliding rail is fixedly installed at the top of the cutting table, a moving table is installed on the surface of the sliding rail, a limiting mechanism is arranged at the top of the cutting table, and the limiting mechanism comprises a rotating disc, a sliding groove, a rolling wheel and a first hydraulic rod. By arranging the limiting mechanism, a user places a workpiece to be cut on four limiting seats and enables the workpiece to be located above rolling wheels, sliding friction between the workpiece and the limiting seats is converted into rolling friction through the arrangement of the rolling wheels, friction force is reduced, and after the limiting seats reach preset positions, the workpiece is cut by starting a first hydraulic rod; and the limiting plates are driven to move, the limiting plates are finely adjusted, so that the workpiece is clamped by the four limiting plates, and compared with the prior art, the clamping effect is more stable.

The invention discloses an enhancement releasing platform which comprises a releasing pool arranged on the ground, the rear end of the releasing pool is a placing area, the front end of the releasing pool is a releasing area, a water outlet is formed in the front end of the releasing pool, a gate is arranged at the water outlet, the water outlet is communicated with a releasing groove, and the end, away from the releasing pool, of the releasing groove extends to the bottom of the releasing area. A water pumping assembly is arranged on the rear side of the releasing pool and communicated with a water inlet pipe, the end, away from the water pumping assembly, of the water inlet pipe extends to the releasing point, the water pumping assembly is communicated with a water outlet pipe, and the end, away from the water pumping assembly, of the water outlet pipe is communicated with the releasing pool. When the device is used, the biological individuals are firstly transferred into the releasing pool, the water level of the releasing pool is high, the height difference during transferring is small, the biological individuals are not prone to being injured, the biological individuals are released into a water body through the releasing groove after the gate is opened, in the releasing process, the releasing groove cannot be damaged due to water impact, friction and collision are reduced, and the survival rate is increased.

The invention relates to a compact type running and parking integrated electronic mechanical braking mechanism, and belongs to the technical field of braking equipment. Comprising a mounting frame, a brake assembly and a brake caliper body assembly, and the brake assembly comprises a service brake unit and a parking brake unit; the service braking unit comprises a braking motor and a reduction gear set; the brake caliper body assembly is provided with a brake caliper body, the brake caliper body is slidably installed on the installation frame, and one end of the brake caliper body is connected with the power end of the brake motor through a reduction gear set. The parking braking unit comprises a parking motor, a ratchet wheel and a pawl; the ratchet wheel is connected with the reduction gear set, the pawl is connected with the power end of the parking motor, and a buffering piece is arranged between the pawl and the power end of the parking motor and used for forming flexible connection between the pawl and the power end of the parking motor when the ratchet wheel is locked by the pawl and fails. Flexible connection is formed between the pawl and the power end of the parking motor, the parking stability is improved, frictional wear between parts is reduced, and the service life of the mechanism is prolonged.