214results about How to "Avoid affecting service life" patented technology

The invention provides a battery shell air tightness detection device which comprises an air exhaust part, a detection mechanism, a feeding mechanism and a mounting table, the feeding mechanism and the detection mechanism are arranged on the mounting table, the feeding mechanism is used for feeding the detection mechanism, and the detection mechanism is used for mounting a battery shell and performing air tightness detection on the battery shell; the detection mechanism is provided with a circulation channel, and the circulation channel is communicated with the interior of the battery shell to form a sealed pressure measurement space; the air extracting piece is used for extracting air in the pressure measuring space so that negative pressure can be formed in the pressure measuring space. The battery shell is installed on the detection mechanism, meanwhile, the detection mechanism is provided with a channel communicated with the interior of the battery shell and the air exhaust part, the air exhaust part exhausts air in the battery shell so that negative pressure can be formed in the battery shell, and a detector is arranged in the air exhaust part and can detect the size of the negative pressure in the battery shell. Whether the battery shell leaks air can be judged, manual plugging is not needed, the detection precision is high, the operation is simple, and the working efficiency is high.

The invention discloses a surface phosphating and cleaning device for metal rollers for foils, and relates to the technical field of metal material surface treatment.The surface phosphating and cleaning device comprises a base and a fixing frame, a phosphating pool and a cleaning pool are fixedly arranged at the top of the base, and two walking mechanisms are arranged at the top of the base; a portal frame is fixedly connected between the tops of the two walking mechanisms, two first multi-stage electric telescopic rods are symmetrically arranged on the top face of the inner side of the portal frame, a mounting plate is fixedly connected to one ends of the first multi-stage electric telescopic rods, two guide rods are fixedly connected to the bottom of the mounting plate, and a fixing frame is fixedly connected with the guide rods. Three swing washing structures are arranged outside the fixing frame, and the first storage rack and the fixing frame are fixedly connected in a penetrating mode. According to the surface phosphating cleaning device for the metal rollers for the foils, the problem that a plurality of metal rollers are damaged due to mutual collision during phosphating is solved.

The check valve with the filtering mechanism comprises a valve body, flange plates are fixedly arranged on the left side and the right side of the valve body in a sleeved mode, four flange holes are formed in each flange plate, an installation ring is arranged on the side, away from the valve body, of each flange plate, a filtering net is fixedly connected to the inner side of each installation ring, and the filtering mechanism is fixedly connected with the filtering net. According to the check valve with the filtering mechanism, in the using process, before the valve body is connected with a connecting pipeline through a flange plate, an installation ring is moved, a limiting cylinder is moved to be inserted into an inner cavity of a corresponding flange hole, then the flange plate on the connecting pipeline is attached to a first sealing ring, and then fixing is conducted through an external screw; compared with the prior art, the device has the advantages that the mounting operation of the filter screen is simple, screw holes do not need to be punched in the valve body, and the influence on the service life of the valve body is avoided.

The utility model relates to the field of trephine, in particular to a water-cooling trephine with a saw blade convenient to replace, which comprises a shell assembly and a trephine saw blade, an assembling mechanism is arranged at the end of the shell assembly, the trephine saw blade is detachably arranged on the assembling mechanism, and a driving mechanism for driving the trephine saw blade to work is arranged in the shell assembly. According to the water-cooling trephine with the saw blade convenient to replace, the pressing force of the trephine saw blade can be adjusted, so that the problems that the saw blade swings and fractures in the cutting process and certain danger is caused to workers due to the fact that the pressing force on the saw blade is too large or too small, and the cutting efficiency is affected due to the fact that the cutting force is insufficient due to too large friction force are solved. And meanwhile, the saw blade is easy and convenient to disassemble and assemble, and when the saw blade goes wrong, the saw blade is convenient to replace.

The utility model discloses a transfer case lubricating device which comprises a transfer case body, a bearing seat is installed at the output end of the transfer case body, a bearing cover is arranged on one side of the bearing seat, a filter screen ring is embedded in the bearing cover in parallel, and a cleaning brush is fixedly connected to the bottom end in a cavity of the bearing cover. The bottom end of the bearing cover is connected with an impurity removal trapezoidal cavity in a penetrating manner; through the filtering effect of the filter screen ring on lubricating oil, the situation that the service life of equipment is affected by abrasion increase caused by the fact that impurity particles enter the equipment is avoided, and self-cleaning can be carried out under the condition that the whole equipment is not disassembled through the half-edge reciprocating rotation mode of the filter screen ring and the cleaning brush in a matched mode.

The invention discloses a mining punching machine with a drill bit convenient to replace, and relates to the technical field of mining devices.The mining punching machine comprises a circular frame and the drill bit, a connecting pipeline is arranged above the circular frame, and an operation table used for manual operation is arranged above the connecting pipeline; a folding mechanism used for supporting is arranged below the circular frame, a threaded rod is arranged in the center of the folding mechanism, a fixing mechanism used for fixing or replacing a drill bit is arranged in the threaded rod, and a first motor and a second motor are arranged in the connecting pipeline. According to the device, a large amount of heat is generated on the surface of the drill bit due to high-speed rotating friction between the drill bit and the ground in the working process, if the drill bit is damaged and needs to be replaced in the period, the drill bit can be replaced after being cooled, and the drill bit can be replaced by rotating a second nut through a fixing mechanism; and the working time of workers is effectively saved, so that the working efficiency is improved.

The utility model relates to a filter assembly for a water inlet end, which comprises a filter body, one end of the filter body is provided with a plurality of water inlet connecting grooves, the diameters of the water inlet connecting grooves are different, the water inlet connecting groove with the smallest diameter can allow water to pass through, and the interior of each water inlet connecting groove can be matched with a pipeline fixing joint. A water outlet connecting column capable of allowing water to pass through is arranged at the other end of the filter body, a pipeline assembly is arranged on the surface of the water outlet connecting column, a one-way valve is arranged in the filter body close to the water outlet connecting column, and the one-way valve can limit water from entering the filter body from the water outlet connecting column; the water inlet connecting groove can be matched with pipeline fixing connectors of different sizes, convenience is brought to a user during pipeline installation, when water flows back, the one-way valve can prevent backflow, and the situation that the service life of the whole filter body is affected is avoided.

The smoke exhaust device comprises a shell, a water storage tank is arranged at the bottom of the shell, a rotating assembly is connected to the bottom of the water storage tank, a connecting plate is arranged at the bottom of the rotating assembly and connected with universal wheels, and a filtering assembly and a smoke exhaust fan are arranged on the inner side of the shell. The filtering assembly is fixed to the inner side of the shell through the connecting assembly. When the smoke exhaust device is used by a user, the rotating part can drive the water storage tank above and the shell to move through the arrangement of a corresponding structure and the adjustment of the rotating assembly through a ball, and the smoke exhaust device can exhaust smoke in different directions through the fixation of the fixing block of the adjusting assembly; and a spray head is arranged between the filter screen I and the activated carbon adsorption plate to spray water mist to cool the smoke, so that the damage of high-temperature smoke to parts on the inner side of the device is avoided, and meanwhile, the activated carbon adsorption plate is arranged to ensure that harmful substances in the smoke can be adsorbed and filtered by the activated carbon adsorption plate.

The utility model discloses a switching type vehicle alarm which comprises an alarm body, a mounting shell and a buffering and damping mechanism, the mounting shell is arranged at the bottom of the alarm body, the buffering and damping mechanism is arranged in the mounting shell and comprises a movable plate, the movable plate is in sliding contact with the inner wall of the mounting shell, and the movable plate is arranged on the inner wall of the mounting shell. The left side and the right side of the bottom of the movable plate are each provided with an inclined block and a connecting mechanism, and the connecting mechanism is arranged at the bottom of the alarm body and comprises a base. Through mutual cooperation of the movable plate, the inclined block, the fixed block, the positioning rod, the movable block, a baffle, a buffer spring, a movable block, a ball and a shock absorber, when a vehicle body vibrates during working, rigid collision between the alarm and the vehicle body is avoided, so that the alarm has a buffer effect, the alarm is prevented from being damaged due to long-time continuous rigid vibration, and the service life of the alarm is prolonged. Therefore, the service life of the alarm is prevented from being influenced.

The utility model relates to the technical field of encoders, and discloses an encoder wire connecting structure which comprises an interface body, an interface female head is fixedly connected to the outer wall of one side of the interface body, an interface sub head is slidably connected to the inner wall of the side face of the interface female head, and an installation mechanism is arranged on the interface sub head. An auxiliary mechanism is arranged on the interface sub-head, the mounting mechanism comprises a positioning opening, the positioning opening is formed in the outer wall of the side, close to the interface female head, of the interface sub-head, a positioning ring is fixedly connected to the outer wall of the side, close to the positioning opening, of the interface female head, and a groove is formed in the outer wall of the top of the interface sub-head; arc-shaped plates are slidably connected to the inner walls of the two sides of the groove, and sliding plates are fixedly connected to the outer walls of the bottoms of the arc-shaped plates. According to the utility model, the positioning ring, the positioning port, the arc-shaped plate and other structures are arranged, so that the plugging ports are rectified and corrected, and the phenomenon that the service life is influenced due to the abrasion of the plugging port core caused by the deviation during plugging is prevented.

The utility model discloses a high-strength impact-resistant electric sanitation truck carriage which comprises an electric sanitation truck, a rubber damping block is fixedly connected to the electric sanitation truck, a carriage body is fixedly connected to the upper surface of the rubber damping block, and two connecting blocks are fixedly connected to the upper surface of the carriage body. The inner surfaces of the two connecting blocks are both rotationally connected with connecting rods, the side surfaces of the two connecting rods are both fixedly connected with movable plates, the two movable plates are fixedly connected with the same turnover cover, the inner surface of the carriage is fixedly connected with two first magnets, and the inner surface of the turnover cover is fixedly connected with two second magnets. According to the electric sanitation truck, through the arrangement of the rubber damping blocks, when the electric sanitation truck passes through an uneven road surface and generates bumping impact force, under the action of the rubber damping blocks, the impact force transmitted to the carriage can be reduced, so that the probability that the bottom of the carriage deforms and is damaged can be reduced, and the influence on the service life of the carriage is avoided.

The invention discloses an arch breaking scraper and a scraper conveyor, and belongs to the technical field of belt conveyor cleaning equipment. The arch breaking plate comprises an arch breaking plate body, a plurality of arch breaking teeth which are continuously distributed are formed at the bottom of the arch breaking plate body, the arch breaking teeth are used for conducting arch breaking treatment on hardened materials, and the materials after arch breaking can freely pass through gaps between the adjacent arch breaking teeth; wherein the ratio of the tooth root width H to the tooth height h of the arch breaking tooth is controlled to be 1-3 times. According to the arch-breaking scraper blade, the tooth height and the tooth root width of the arch-breaking teeth are optimally designed, so that the situation that the service life of the arch-breaking teeth is affected due to the fact that the strength of the arch-breaking teeth is reduced due to the fact that the arch-breaking teeth are too sharp can be effectively prevented; the situation that the space between every two adjacent arch breaking teeth is too large, the arch breaking operation on hardened materials with small hardened areas is missed, and then the arch breaking efficiency is affected can be prevented; therefore, the arch breaking efficiency and the service life can be well considered.

The present application relates to the technical field of milling cutter, in particular to a variable helix angle vibration reduction type milling cutter assembly, which comprises a connecting disc, a vibration reduction assembly, a milling cutter, a sliding frame, a sleeve rod, a second spring and a damping block, the variable helix angle arranged on the milling cutter can effectively reduce the vibration when the milling cutter is subjected to high-frequency vibration, so as to avoid affecting the normal work of the milling cutter, when the milling cutter is subjected to low-frequency vibration, the damping block will slide upward under the force brought by the vibration, so as to extrude the second spring, and also push the sliding shaft of the sleeve rod to start to contract, the second spring will generate elastic force after being compressed, so as to drive the damping block and the sliding shaft of the sleeve rod to reset, when the damping block is bounced back, the force brought by the vibration will be offset, and when the sliding shaft of the sleeve rod slides in the sleeve rod, there is friction, so the force brought by the vibration can also be consumed, so that the effect of effectively reducing the vibration is achieved, and the low-frequency vibration and the high-frequency vibration can be effectively reduced.

The utility model relates to the technical field of screw drilling tools, in particular to an anti-erosion water cap for a screw drilling tool, which comprises a water cap, a vertical hole and a transverse hole, the vertical hole and the transverse hole are arranged in the water cap, coatings are arranged on the inner surfaces of the vertical hole and the transverse hole, and intersecting lines of the vertical hole and the transverse hole are chamfered. According to the utility model, the strength of the inner walls of the vertical hole and the transverse hole can be increased through the arrangement of the plating layer, the situation that the vertical hole and the transverse hole are quickly corroded and the service life of the device is influenced is prevented, and the intersecting line of the vertical hole and the transverse hole is chamfered, so that the contact area between the intersecting line and the plating layer is increased, and the use strength of the plating layer at the intersecting line is ensured; according to the water cap, the corrosion resistance of the interior of the water cap is further guaranteed, the erosion and corrosion prevention effect can be guaranteed by selecting hard chromium as the material of the plating layer and setting the strength of the hard chromium to be larger than 800 HV, the hard chromium is not prone to falling off due to the fact that the thickness of the hard chromium is set to be larger than 0.3 mm, and the corrosion resistance of the hard chromium can be guaranteed.

The utility model discloses a tank body device for a steady flow compensator, which comprises a steady flow compensator tank body, the interior of the box body is divided into a municipal pressure cavity air pressure chamber, a municipal pressure cavity, a user pressure cavity air pressure chamber and a user pressure cavity through a municipal pressure cavity air pressure diaphragm, a user pressure cavity sealing head and a user pressure cavity air pressure diaphragm which are sequentially arranged in the longitudinal direction, a diaphragm supporting net is installed in the municipal pressure cavity, and a plurality of net holes penetrating through the two sides of the diaphragm supporting net are formed in the surface of the diaphragm supporting net. The municipal pressure cavity is outwards connected with a municipal water supply pipe network and a user main pipe interface; the municipal pressure cavity air pressure chamber, the municipal pressure cavity and the user pressure cavity air pressure chamber are respectively provided with corresponding air vents; and the municipal pressure cavity is communicated with the user pressure cavity. According to the four-cavity type steady-flow compensation water supply device, adjustment is carried out in a dual-compensation cooperation mode under different pressure conditions, it is ensured that enough water supply amount and stable and continuous water supply are provided, and the water use requirement of a user is met.

The utility model discloses a dissolving device for soil detection, which belongs to the technical field of soil detection, and comprises a mounting shell and a heat dissipation net, the side wall of the mounting shell is fixedly connected with the heat dissipation net, a rotating assembly is arranged in the mounting shell, a lubricating assembly is arranged in the mounting shell, the rotating assembly comprises a motor, and the motor is connected with the lubricating assembly. An output shaft of the motor is fixedly connected with a cooling fan, the top end of the cooling fan is fixedly connected with a rotating table, and a fixing hole is formed in the top of the rotating table; according to the soil dissolving device disclosed by the utility model, through the arrangement of the rotating assembly, the design, the use of the rotating table, the dissolving bottle and the motor, various types of soil can be dissolved, and the dissolving efficiency when the various types of soil need to be detected is improved, so that the detection efficiency is improved; and the motor is cooled by cold air exhausted by the cooling fan and the refrigeration pipe, so that the temperature of the motor is prevented from rising and the service life is not influenced.

The utility model discloses a pelletizer convenient to discharge, relates to composite particle processing technical field, including extruder main part and anti-sticking subassembly, the right side of extruder main part is provided with the mouth mould, and the outside of extruder main part right end is provided with the fixed frame, the right side of fixed frame is fixed with the motor, and the left end of motor is connected with the crankshaft, and the crankshaft is connected with the anti-sticking subassembly. A blade is arranged on the outer side of the left end of the crankshaft, and the anti-sticking assembly is arranged in the middle of the crankshaft. According to the pelletizer convenient to discharge, through the arrangement of the anti-sticking assembly, when a motor drives a crankshaft to rotate to enable a blade to cut off extruded materials on a mouth mold, the crankshaft can further drive a piston rod to move up and down in a reciprocating mode in a piston barrel through a connecting rod, and when the piston rod moves downwards, external air can be supplemented into the piston barrel through a first one-way valve; when the piston rod moves upwards, the internal airflow is sprayed out from the air spraying head at the bottom of the flow dividing pipe through the second one-way valve and the fixing pipe so as to spray air to the outer side of the blade for cleaning.

The utility model discloses a kind of plasma generation devices, including device shell, positive plate, negative plate and voltage stabilizing device, dustproof filter screen is respectively attached and arranged in the left and right ends of device shell, and the upper end of dustproof filter screen is provided with limiting mechanism, the inside of device shell is installed fan, and the inside of device shell rear end is embedded with heat dissipation copper sheet, while the rear end of heat dissipation copper sheet is provided with heat dissipation fin, and heat dissipation fin stretches out the outside of device shell rear end.The plasma generation device can filter and dust removal treatment to the gas entering the inside of device shell, prevent dust from entering device shell, and combined with the setting of limiting mechanism, it is convenient to disassemble, clean and replace dustproof filter screen, prevent dust from adhering to dustproof filter screen for a long time, and combined with fan acceleration device shell inside gas flow, while it can quickly dissipate heat in device shell outward.

This application relates to the technical field of ship charging, and in particular to a marine charging device with automatic tension adjustment. The device includes a telescopic arm with a cable mounted on it. The cable includes a charging head for connection to the ship. The telescopic arm comprises a main arm and a secondary arm, which are hinged together. A connecting frame is located at the end of the secondary arm, and the charging head is located within the connecting frame. A guide frame is located at the end of the main arm near the secondary arm. A support roller is rotatably connected to the guide frame. Several support wheels for supporting the cable are mounted on the support roller. A pressure roller is mounted on the guide frame, and a pressure wheel is coaxially connected to the pressure roller. The cable is clamped between the pressure wheel and the support wheel. A sensor for monitoring tension is installed on the cable. An adjusting motor is installed on the support roller, and the adjusting motor is electrically connected to the sensor via a controller. Through the sensor and adjusting motor, the cable tension is monitored in real time and adjusted by unwinding the support wheels to prevent excessive tension from affecting its service life.

The utility model relates to the field of MPP pipes, and discloses an MPP pipe with a buffer mechanism, which comprises a three-way pipe body, a fixing plate is fixedly connected inside the three-way pipe body, the upper end of the fixing plate is detachably connected with a bottom plate, the bottom of the bottom plate is provided with a mounting unit, the upper surface of the bottom plate is fixedly connected with an elastic piece, and the elastic piece is fixedly connected with the buffer mechanism. A buffer plate is fixedly connected to the top end of the elastic piece, a buffer pad is fixedly connected to the upper surface of the buffer plate, a protection unit is arranged on the outer side of the buffer plate, a fixing ring is fixedly connected to the upper end of the interior of the three-way pipe body, and a threaded groove is formed in the surface of the inner wall of the fixing ring. According to the three-way pipe, through cooperation of the bottom plate, the installation unit, the elastic piece, the buffer plate, the buffer pad and the protection unit, water flow flowing downwards through the upper end of the three-way pipe body can be guided and buffered, and the water flow can be directly divided towards the left side and the right side.

The utility model discloses a hot air circulation type three-dimensional drying room which comprises a drying room body, a room door is arranged on the front surface of the drying room body, a first fan is fixedly connected to the upper surface of the drying room body, an air inlet pipe is fixedly connected to the input end of the first fan, and an exhaust head is fixedly connected to the end, away from the first fan, of the air inlet pipe. And the output end of the first fan is fixedly connected with a first connecting pipe. Through the arrangement of a motor, a reciprocating lead screw, a scraping plate, a guide rod, a water collecting box and a water absorption plate, condensate water generated when objects with heavy moisture are dried can be collected, the situation that the condensate water falls on the objects is avoided, and therefore the drying efficiency is improved, through the arrangement of a guide rail and a handle, the water absorption plate can be rapidly taken down and installed, and therefore the practicability is improved, and the practicability is high. And impurities such as dust contained in the discharged hot air can be filtered through the arrangement of the filter screen, so that the impurities are prevented from entering the equipment to influence the service life of the equipment.

The utility model relates to the technical field of battery energy storage, and discloses a leakage protection structure for an all-vanadium redox flow battery, which comprises a cover plate arranged on a battery box, a battery body is arranged in the battery box, a collecting device is arranged in the battery box, and the collecting device comprises a flow guide plate, a flow guide plate and a flow guide plate, the connecting pipe is arranged on the guide plate; the liquid leakage box is arranged in the battery box, and the liquid leakage box is connected with the flow guide plate through the connecting pipe; the liquid leakage detector is arranged on the flow guide plate; the electric valve is arranged on the connecting pipe, and a separating device is arranged in the battery box. The protection structure can collect leaked liquid when the battery leaks liquid, and can avoid the problems of corrosion caused by soaking the battery body due to accumulation of the leaked liquid, influence on the health and the service life of the battery and potential safety hazards.

The utility model provides a demister for an outlet pipeline of a waste gas chemical scrubbing tower, belongs to the technical field of scrubbing tower demisting, and solves the problems that a small amount of corrosive chemical substances contained in waste gas mist are gathered on a demisting silk screen, so that the demisting silk screen is easily corroded, and the service life of the demisting silk screen is shortened. The demister for the outlet pipeline of the waste gas chemical washing tower comprises a washing tower body, a gas inlet pipe is fixed on the outer wall of the washing tower body, a gas outlet pipe is fixed at the upper end of the washing tower body, an activated carbon layer and a demisting silk screen are fixed on the gas outlet pipe, a support is fixed in the gas outlet pipe, a motor is fixed on the support, and a hollow rotating shaft is fixed at the output shaft end of the motor. A drying mechanism is arranged between the air outlet pipe and the hollow rotating shaft. The demisting device has the advantages that the demisting silk screen is kept dry, corrosion of condensed and undried water mist to the demisting silk screen is avoided, and the service life of the demisting silk screen is prolonged.

The utility model relates to the technical field of grinding wheels, in particular to a grinding wheel with a damping structure, which comprises a bottom plate. Vibration force generated between the grinding wheel body and an object is transmitted to the traction rod, so that the damping spring deforms repeatedly between the retainer and the bottom plate, the effect of enhancing damping of the grinding wheel is achieved, operation is more convenient, the vibration force is effectively prevented from influencing the service life of equipment, and the service life of the equipment is prolonged. Meanwhile, a traction rod pushes a top plate to transmit vibration force to a detection rod, so that the detection rod vibrates into a pressure gauge repeatedly, the current grinding vibration force can be obtained through a numerical value displayed by the pressure gauge, when the vibration force is too large, the distance between the grinding wheel body and an object needs to be increased, otherwise, the object and accessories can be damaged through friction and vibration; and when the traction rod is vibrated to move, the transverse plate moves together, and the traction rod is limited to only vertically move upwards through movement of the insertion plate in the sliding groove, so that monitoring data of the pressure gauge is displayed more accurately, and the grinding wheel body is monitored and protected in real time.

The utility model discloses an adjusting device for sliding contact line connection, which belongs to the technical field of sliding contact lines and comprises a copper head sliding contact line, a steel base is slidably connected in the copper head sliding contact line, adjusting plates are in threaded connection with the middles of the two sides of the steel base through bolts, stress plates are fixedly connected with the bottom ends of the two sides of the steel base, and the stress plates are in threaded connection with the steel base through bolts. A mounting groove is formed in the middle of one side of the stress plate, and a heat dissipation assembly is fixedly connected to the position, located on the edge of the mounting groove, of one side of the stress plate. Through the arrangement of the steel base, the adjusting plate and the bolt, a gap is reserved between the adjusting plate and the steel base so as to adapt to the deformation of the copper head sliding contact wire, so that the copper head sliding contact wire always has good contact, and the phenomena that resistance is increased, the power transmission efficiency is reduced, sparks and even safety accidents are caused, and the production stability and safety are influenced are avoided; the dustproof net can prevent dust from affecting normal operation of the induced draft fan, and the induced draft fan can accelerate heat dissipation of the surface of the copper head sliding contact line.

The utility model discloses a planer type milling machine guide rail mechanism, which belongs to the field of planer type milling machines, and comprises a guide rail, a driving connecting seat and a base, the guide rail is fixedly connected inside the base, the driving connecting seat is slidably connected to the surface of the guide rail, and one end of the driving connecting seat is fixedly connected with a scrap collecting mechanism. One end of the scrap collecting mechanism is movably connected with a centralizing mechanism, the centralizing mechanism is located under the driving connecting seat, a releasing groove is formed in the inner side of the end, close to the scrap collecting mechanism, of the base, a sliding groove is formed in the inner side of the base and communicates with the releasing groove, and the side, close to the sliding groove, of the releasing groove is in an arc shape; a releasing hole is formed in the side, close to the releasing groove, of the bottom end of the interior of the base, chippings generated during machining can be conveniently adsorbed, and the situation that the chippings fall to the connecting position of a guide rail and a driving connecting base, consequently, the guide rail is abraded or the chippings enter driving equipment, consequently, equipment failures are caused, and the service life of the equipment is affected is prevented.

The utility model discloses a closed double-point high-speed precision press machine, which relates to the technical field of press machines and comprises four vertical plates fixedly mounted on two electric push rods on a body respectively, and two semicircular plates are arranged on two sides of output shafts of the two electric push rods respectively. Clamping grooves are formed in the outer walls of the four semi-annular plates correspondingly, semi-annular sponge plates are fixedly mounted on the inner walls of the four semi-annular plates correspondingly, the four semi-annular sponge plates make contact with output shafts of the two electric push rods correspondingly, and clamping rods are slidably mounted on the four vertical plates correspondingly. The closed type double-point high-speed precision press machine has the advantages that the press machine is convenient to use, dust adhering to the electric push rod is cleaned, and the dust is prevented from entering the electric push rod to affect the service life.

The invention discloses an anti-cavitation Ni-based high-entropy alloy / ceramic composite coating and a preparation method, the Ni-based high-entropy alloy / ceramic composite coating is composed of 5-20 wt% of WC powder, 1-5 wt% of VC powder and 75-94 wt% of Ni-based high-entropy alloy powder, and the Ni-based high-entropy alloy powder is composed of 27-27.5 at% of Co powder, 18-19 at% of Cr powder, 12-13 at% of Fe powder, 5-10 at% of Mo powder and the balance Ni powder. According to the preparation method, the Ni-based high-entropy alloy / ceramic composite coating with excellent comprehensive abrasion, cavitation and impact resistance and high bonding strength with a matrix is prepared through the atomic ratio, the mass ratio and the laser cladding technology, the problems of abrasion, cavitation and impact on the surface of a water turbine can be solved, and the service life is prolonged.

The utility model discloses a wear-resistant vehicle wire harness assembly which comprises a first joint and a second joint arranged on the right side of the first joint, and the first joint and the second joint are connected through a wire harness body. The wire harness body is composed of a wear-resistant layer, a flame-retardant layer, a heat-insulating layer, a reinforcing layer, an elastic layer, a shielding layer, an insulating layer, a wire core and a separation insulating column. Through the arrangement of the wear-resistant layer, the wear-resistant effect of the surface of the wire harness body is improved, the phenomenon that the wire harness is abraded with the internal structure of a vehicle after being used for a long time is reduced, and therefore the service life of the wire harness is prevented from being influenced, through the arrangement of the flame-retardant layer, the flame-retardant effect of the wire harness body is improved, the safety in use is improved, and through the arrangement of the heat insulation layer, the service life of the wire harness is prolonged. The heat insulation effect of the wire harness body is improved, the strength of the wire harness body is improved through the arrangement of the reinforcing layer, the service life of the wire harness body is further prolonged, and the insulation effect of the wire core is improved through the arrangement of the insulation layer.

A filtering type particle extruder comprises an extruder body, a smashing component, a feeding component, a heating component and a heat dissipation component, the extruder body comprises a top frame and two mounting frames, the top frame is fixedly arranged at the upper end of the extruder body, and the two mounting frames are fixedly arranged on the two sides of the upper end of the extruder body in a mirror image mode; the feeding part is fixedly arranged on one side of the mounting frames, the crushing part is fixedly arranged in the two groups of mounting frames, the heating part is fixedly arranged at the lower end of the crushing part, and the heat dissipation part is fixedly arranged at the lower end of the extruder main body. The communicating pipe penetrates through the inner tank to provide a fixing and mounting space for the inner sawteeth and the rotating teeth, the driving component drives the communicating pipe and the rotating teeth to rotate, the communicating pipe and the rotating teeth rub against each other, and particle materials fed from the upper end are crushed.