45results about How to "Convenient screw connection" patented technology

The invention relates to water treatment industry, in particular relates to the depth-type filtration and purification of drinking water, and discloses a method for connecting a filter drum and a built-in filter liner of a water purifier in a rotary inserting and rotary lifting manner, and the built-in filter liner. A convex insertion water opening with a sealing component is arranged at the lower end of the built-in filter liner positioned in a sealing cavity of the filter drum and is matched with a water passing hole of the built-in filter liner in an inserting manner; the rotary threaded inserting structure is arranged along the peripheral surface of the built-in filter liner or positioned on the peripheral surface of a casing of the built-in filter liner or positioned on the peripheral surface of the end cover of the built-in filter liner; a corresponding rotary threaded inserting structure matched with the built-in filter liner in a rotary connecting manner is arranged on the inner wall of the filter drum; the built-in filter liner positioned at high and low inserting and connecting positions can automatically move downwards or upwards when rotating along positive and negative directions of the rotary threaded inserting structures; the convex insertion water opening with the sealing component and the pipe wall of the water passing hole of a base are inserted together in a sealing manner or separated from each other; a linkage matching state and a separation matching state are set between a handle mechanism axially or rotatably linked with the built-in filter liner and a rotary lifting structure of the built-in filter liner.

The invention discloses a high-temperature-resistant silicon carbide pressure sensor and a preparation method thereof. According to the sensor, the method comprises the steps of: partially replacing anovel structure of a metal circuit with a 4H-SiC body type lead; and etching a 4H-SiC body type lead on an N-type highly doped epitaxial layer; electrically connecting the 4H-SiC body type lead and ametal bonding pad through an ohmic contact region, and replacing all-metal circuit connection between the metal bonding pad and a 4H-SiC piezoresistor strip, so that the high-temperature stability ofsensor circuit connection is effectively improved, and a homogeneous 4H-SiC contact surface is provided for further direct bonding.

The invention discloses universal wheel assembling and marking integrated equipment, and relates to the technical field of universal wheel assembling and marking, in particular to the universal wheelassembling and marking integrated equipment which comprises an automatic conveying belt and a laser marking head. A hydraulic chamber box is distributed on the surface of the automatic conveying belt;auxiliary parts are arranged on the two sides of the surface of the hydraulic chamber box; a second micro push rod is connected to the right side of an induction touch panel; a feeding support is fixed to the right side of the automatic conveying belt; the laser marking head is fixed to the upper surface of an electric sliding plate; a second electric push rod is fixed to the left side of the automatic conveying belt; a spring telescopic rod is fixed to the right side of the second electric push rod; and a nut supporting piece is fixed to the top of the spring telescopic rod. According to theuniversal wheel assembling and marking integrated equipment provided by the invention, when a first electric push rod stretches out, the laser marking head moves along with the first electric push rod to get close to a universal wheel in assembling for marking operation, and the universal wheel does not need to be transferred for marking, so that the production process is optimized, and the production procedure is simplified; and the laser marking head can longitudinally move through the electric sliding plate, and lifting motion is achieved through a third micro push rod, so that the markingposition is convenient to adjust.

A hose end lever controlled ball valve spigot incorporating a quarter turn lever actuated ball valve having a valve housing with a 90° inlet which protrudes 180° away from the valve actuating lever so that the lever handle of the valve is exposed in a vertical plane for easy access and operation. An outlet spout is secured to the valve housing at the valve outlet and extends at an approximate angle of 45° from the valve housing in the same direction as the actuating lever.

The invention relates to an atomizing nozzle structure of a desuperheating valve. The atomizing nozzle structure of the desuperheating valve comprises a valve core and a sleeve-type atomizing nozzle,wherein a water passing hole is formed in the valve core; the sleeve-type atomizing nozzle comprises an outer sleeve and an inner sleeve, wherein a stepped hole is formed in an axial center of the outer sleeve, the inner sleeve is assembled in a large-diameter hole of the stepped hole of the outer sleeve and is in clearance fit with the outer sleeve and circumferentially positioned, and the upperend of the inner sleeve is axially limited by a hole shoulder of the stepped hole; a bottom plug is positioned at the lower end of the inner sleeve and is in threaded fit with the outer sleeve to limit the lower end of the inner sleeve; the valve core is in sliding fit with a shaft hole of the inner sleeve; a plurality of flow passage holes are axially formed in one side of the inner sleeve hole wall; a plurality of vortex cavities corresponding to the flow passage holes separately are formed in the inner sleeve outer wall, and the diameter of the vortex cavities is larger than that of the flow passage holes; the vortex cavities communicate with the shaft hole of the inner sleeve through the flow passage holes, and the axial direction of the flow passage holes and the axial direction of the vortex cavities are in an oblique state; a plurality of atomizing spray holes are axially formed in one side of the outer sleeve hole wall, and the atomizing spray holes communicate with the corresponding vortex cavities separately; and the diameter of the atomizing spray holes is smaller than that of the flow passage holes, and nozzles of the atomizing spray holes are in trumpet shapes.

The invention discloses an environment-friendly storage device for glue of a colloid storage battery. The device comprises a box and a carrying box. The carrying box is arranged in the box, the lowersurface of a baseplate of the carrying box is in contact with the upper surface of a baseplate of the box, and a top plate of the box is provided with a feeding hole. A rotation plate is rotatably connected to the side wall of the feeding hole, the upper surface of the rotation plate is provided with a groove, and multiple filtering plates with dust filtering holes are fixedly connected into the groove through multiple fastening bolts. A U-shaped pull plate is fixedly connected to the upper surface of the rotation plate, one end of the rotation plate is provided with a containing cavity, and aclamping mechanism for clamping the rotation plate to the box is fixedly connected to the side wall of the containing cavity. The environment-friendly storage device for the glue of the colloid storage battery can conveniently store remaining prepared glue, and the situation is avoided that since the moisture of the glue is lost when the glue is placed, the colloid storage battery is cracked dueto dryness, and thus the colloid storage battery cannot be used. The resources are saved to a certain extent, the environment is protected, when the glue is injected, the help of other tools is not needed, and the time and labor are saved.

The invention discloses a drilling device with a landslide prevention function for blasting construction. The drilling device comprises a supporting plate body and a servo motor. The servo motor is installed above the supporting plate body, a connecting shaft is fixed to the bottom end of the servo motor, and a limiting pipe is installed at the bottom end of the connecting shaft. Supporting columns are fixed to the left side and the right side of the lower part of the supporting plate body, handles are installed on the left side and the right side of the supporting plate body, and installationrods are fixed into the supporting columns. The drilling device with the landslide prevention function for blasting construction is provided with leveling rods, the leveling rods are lowered to enable the supporting columns of the whole device to be used in an uneven working area, the height of the two supporting columns can be conveniently adjusted by the leveling rods, the supporting plate bodycan be placed horizontally, a drilling rod and a drilling head can be conveniently placed vertically, peripheral areas are avoided to be affected, and the landslide of the peripheral areas is avoided.

The invention discloses an auxiliary drainage pipeline connection device for municipal engineering road water supply and drainage. The auxiliary drainage pipeline connection device comprises a base, trundles, a balancing weight, a reinforcing supporting rod, a connecting seat, an adjustable longitudinal rod, an outer sleeve, a straight rod, a positioning hole, a fixing nut, a positioning screw, a longitudinal driving seat, a shell, a servo motor, a screw rod, a movable nut, a guide block, a guide groove, a top seat, a reinforcing rib plate, a protective cover, a controller, a first driving motor, a vertical rod, a first air cylinder, a vertical plate, an arc-shaped strip plate, a plate body, an embedding hole, a baffle ring, a first ball, a through hole, a tooth groove, a guide strip groove, a guide strip, a second air cylinder, a rotating shaft, a round wheel, a cylindrical gear, a connecting shaft, a connecting block, a connecting rod, an inclined rod, a second driving motor, a groove, a second ball, a concave hole and a short shaft. The auxiliary drainage pipeline connection device has the beneficial effects that clamping and lifting operation of a pipeline can be achieved through a pipeline bearing clamp, lifting adjustment of the pipeline can be achieved in cooperation with the lifting effect of a vertical lifting mechanism, and lifting is facilitated.

The invention relates to the technical field of pressure relief valves, and discloses a super capacitor explosion-proof pressure relief valve. The valve comprises a device housing, a valve body is movably installed inside the device housing, a valve stem is movably installed inside the valve body, the upper part of the valve stem is fixedly connected with a spring I, the top end of the spring I isfixedly connected to the top of the valve body, a pressure relief hole I and a pressure relief hole II are formed in the side surface of the valve body, and the outer sides of the pressure relief hole I and the pressure relief hole II are fixedly communicated with a pressure relief cavity. According to the super capacitor explosion-proof pressure relief valve, through the arrangement that the valve body and the valve stem are movably installed inside the device housing, and the pressure relief hole I and the pressure relief hole II are formed in the bottom of the valve body, the pressure relief hole I and the pressure relief hole II discharge an electrolyte and air occurring when the pressure is released, so that the stability of the intensity of pressure inside a capacitor is conveniently ensured, and the capacitor is prevented from exploding; and the discharged electrolyte is stored inside a partition plate, and flows back at the bottom of the valve stem, and waste caused by overflow of the electrolyte is avoided.

The invention discloses a knockout bar connection mechanism of an injection molding machine. The knockout bar connection mechanism comprises a knockout piston rod, a knockout plate, a knockout bar, a moving plate and an ejector plate. One end of the knockout bar penetrates the moving plate to be connected with the ejector plate while the other end of the knockout bar is connected with the knockout piston rod through a knockout bar holder; the knockout bar holder is in threaded connection with the knockout piston rod; the knockout bar is provided with a circular groove circumferentially and a positioning ring is embedded in the circular groove; the positioning ring is fixedly connected with the knockout bar holder through bolts; the end of the knockout piston rod is provided with piston rod key slots radially, and the circumference of the knockout bar holder is provided with holder key slots radially; a locking washer is arranged between the knockout plate and the knockout bar holder and is provided with internal locking teeth and external locking teeth, the internal locking teeth are connected with the piston rod key slots, and the external locking teeth are connected with the holder key slots. The knockout bar connection mechanism has the advantages of convenience in installation and connection and high stability and strength.

The invention discloses a low-speed new energy electric vehicle chassis storage battery mounting structure, and relates to the technical field of new energy electric vehicles. The device comprises a base, a battery storage groove is fixed to the top of the base, and a bottom adjusting structure is fixed to the bottom of the base through bolts; rotating rods rotationally connected with the base penetrate through the base and are located at the corners of the periphery of the battery storage groove, and first bevel gears are fixed to the ends, located in the base, of the rotating rods; and an equipment groove is formed in the battery storage groove. The base can be fixedly connected with the automobile chassis or taken down, the structure is simple, operation is rapid, the time for supplementing electric energy to the electric automobile is shortened, and the use cost of the electric automobile is reduced; the bottom adjusting structure capable of being folded is arranged on the base to support the whole base, the whole base and the power source are protected, and meanwhile the whole mounting structure can be conveniently moved.

The invention relates to the technical field of valves, and discloses an adjustable plug valve based on chemical production. The adjustable plug valve comprises a valve body, wherein a water inlet is formed in the outer surface of the side end of the valve body, a water outlet is formed in the side end of the water inlet, mounting plates are arranged at the side ends of the water inlet and the water outlet respectively, mounting holes are formed in the side ends of the mounting plates, a sealing layer is arranged at the side ends of the mounting holes, a first valve deck is arranged at the upper end of the valve body, a locking bolt is arranged at the upper end of the first valve deck, and a second valve deck is arranged at the lower end of the valve body. The adjustable plug valve based on chemical production is simple in structure and diversified in function, the connectivity is enhanced, the handle is convenient to mount and dismount, the plug valve can be folded and stored, space is saved, the wear resistance of the interior of the plug valve is enhanced, the plug valve is convenient to dismount, ceramic blocks on a valve seat are convenient to replace, the maintenance cost is reduced, the connection sealing performance is enhanced, the rotating stability of the valve element is improved, and usability is improved.

The invention discloses a drill pipe down-pipe positioning device for mine exploration construction and further discloses an implementation method of the drill pipe down-pipe positioning device for mine exploration construction, the drill pipe down-pipe positioning device for mine exploration construction comprises a supporting and positioning mechanism and an auxiliary rotating mechanism, and the auxiliary rotating mechanism is fixedly arranged on the supporting and positioning mechanism; the upper end of an exploring tube inserted into the ground is fixedly clamped between the lower positioning pieces, the exploring tube pushes the lower positioning pieces outwards towards the two sides due to the fact that the length of the lower ends of the bent rods is larger than that of the upper ends of the bent rods, the bent rods rotate, the upper ends of the two sets of bent rods are folded inwards, and auxiliary limiting is conveniently conducted on the lower end of the exploring tube to be connected; according to the positioning and clamping assembly, the to-be-connected exploring tube and the exploring tube inserted into the ground are prevented from deviating, the upper end of the exploring tube inserted into the ground can be clamped and positioned, the lower end of the to-be-connected exploring tube can be limited in an auxiliary mode, and threaded connection between the exploring tubes is more convenient.

The invention discloses a hole-drilling device for urban construction cable laying capable of depth adjustment, which includes a mounting seat, a first telescopic rod, a screw rod, a driving motor and a steel pipe, and a lifting lug is fixedly installed on the top of the mounting seat. The bottom end of the base plate is fixedly equipped with a column foot, a first telescopic rod is installed between the mounting base and the base plate, a mounting plate is installed on the top of the mounting base, and a vertical plate is fixed above the mounting plate. The inner side of the vertical plate is connected with a connecting sleeve, the steel pipe is arranged on the inner side of the driving wheel, a through hole is opened in the inside of the cone head, and an excavation rod is installed on the top of the fixed rod. The hole-drilling device for urban construction cable laying capable of depth adjustment does not need to be excavated, avoids unreasonable waste of manpower and material resources, facilitates adjustment of the depth, and at the same time facilitates the alignment of the position, which is conducive to ensuring the rapid screw-in of the steel pipe. Help to ensure work efficiency.

The invention discloses a handle seat with a wrist protection effect for an end wall positioning type handheld alloy analyzer and belongs to the field of alloy analyzers. The handle seat comprises a handle base and a wall fixing mechanism; a side seat is fixed at the outer end of the top end of the handle base; a central seat is mounted on the inner side of the bottom end of the side seat; a portis formed in the top end of the central seat; a clamping groove is formed in the right end of the port; the wall fixing mechanism is arranged at the upper right end of the central seat; a wrist protecting belt is bonded to the right wall of the central seat; belt fixing mechanisms are arranged at the front end and the rear end of the central seat; and locking mechanisms are arranged at the left end and the right end of the side seat. According to the invention, a rectangular box body with the front end face and the rear end face being hollowed out is formed through the wall base and the base opening, therefore, when the wall base is drawn out, electric appliances such as a connecting module of a sensor or an alloy measuring instrument can be placed on the front end and the rear end of thewall base, threaded holes are formed in the inner wall of the wall base in a rectangular surrounding mode, and then threaded connection can be conveniently carried out.

The invention discloses a high-temperature-resistant silicon carbide pressure sensor and a preparation method thereof. The sensor utilizes a novel structure in which a 4H-SiC body-shaped lead partially replaces a metal circuit, and etches a 4H-SiC body-shaped lead on an N-type highly doped epitaxial layer. The electrical connection between the 4H‑SiC body lead and the metal pad is through an ohmic contact area, replacing the all-metal circuit connection between the metal pad and the 4H‑SiC varistor strip, effectively improving the high temperature stability of the sensor circuit connection , and provides a homogeneous 4H‑SiC interface for further direct bonding.

The invention provides a double-thread nut and a preparation method process thereof. The double-thread nut comprises a hexagonal nut. A spherical nut is welded to the hexagonal nut. The upper end of the spherical nut is provided with a first connecting hole. A pipe sleeve is detachably connected to the inner side of the first connecting hole. An inner port of the pipe sleeve is provided with a thread structure. According to the double-thread nut, the hexagonal nut and the spherical nut are combined, the lower end of the double-thread nut is provided with a first thread in a tapping mode, the upper portion of the spherical nut is provided with the first connecting hole, the first connecting hole can be provided with a second thread as required or the pipe sleeve is arranged in the first connecting hole, the inner wall of the pipe sleeve is provided with the second thread, and thus, the double-thread nut is convenient to install.

The invention discloses a load-bearing frame based on a non-profile structure, main stand columns and layer plates, and belongs to the technical field of lithium battery auxiliary frames. The load- bearing frame based on the non-profile structure comprises a plurality of main stand columns, layer plates, a base, a top plate and air plates, the main stand columns are arranged in parallel at intervals in the vertical direction, the main stand columns are of a multi-folded-edge structure, the layer plates are arranged in parallel at intervals in the horizontal direction, and the layer plates are connected to the main stand columns to be fixed; and a plurality of first through holes are formed in the layer plates, the base is arranged at the bottoms of the main stand columns, the top plate is arranged at the tops of the main stand columns, the air plate is detachably connected between any two adjacent laminates, and the batteries are arranged on the layer plates. According to the load-bearing frame based on the non-profile structure, targeted adjustment of the air duct structure can be achieved, the flexibility is high, the bearing frame is firmer, the product cost is reduced, and the delivery period is shortened.

The invention relates to the technical field of testing devices, in particular to a vehicle fuel cell testing device which comprises vibration testing equipment, a workbench is installed at the top of the vibration testing equipment, movable supports are connected to the two sides of the top of the workbench through sliding fixing assemblies, and clamping blocks are arranged on the sides, close to each other, of the movable supports. The interior of the movable support is in threaded connection with a locking screw rod, and one end of the locking screw rod is movably connected to the outer surface of the clamping block through a bearing. According to the invention, the sliding rail and the guide block are in sliding connection, so that the movable bracket can move on the top of the workbench conveniently, the two sides of the fuel cell are preliminarily limited and fixed, the fuel cell is conveniently mounted on the upper surface of the workbench to receive a vibration test, and the fuel cell is effectively prevented from being damaged when the fuel cell is fixed on the workbench. A plurality of groups of bolts are needed, the test operation is complicated, and the working efficiency of operators is also reduced.

The invention relates to a structural component for a motor vehicle, comprising an at least partially hollow profiled segment, which can be connected to a motor vehicle body by means of at least two fastening elements arranged in a fastening section. The problem addressed by the invention is to increase the crash safety of the structural component. This problem is solved by a manner that a reinforcing element (6) is arranged in the fastening section between a lateral impact surface (16) and the fastening elements (4), the reinforcing element extends in the longitudinal direction of the profiled segment, and, in the event of an impact from the impact surface, laterally comes into contact with the fastening means at least partially by means of displacement of the fastening elements, the impact energy thus being absorbed.

The invention discloses an agricultural plant protection unmanned aerial vehicle, and relates to the technical field of plant protection unmanned aerial vehicles. The agricultural plant protection unmanned aerial vehicle comprises: a vehicle body, wherein a mounting seat is fixed below the vehicle body, and power parts are distributed on the periphery of the vehicle body; a liquid supply assembly mounted below the mounting seat through a mounting frame; and spraying assemblies symmetrically arranged, wherein the two spraying assemblies are slidably arranged below the mounting frame, liquid is supplied by the liquid supply assembly, and the spraying assemblies can be matched with the plant distribution interval by adjusting the relative positions of the two spraying assemblies.

The invention discloses a robot with a toolkit. The robot with the toolkit comprises the toolkit, the right side wall of the toolkit is fixedly provided with a connection frame, the connection frame is connected with the back of the robot, and thus the toolkit can be installed on the back of the robot conveniently through the connection frame; a fixing column is fixedly installed at the bottom endof the interior of the toolkit, a pull rod can be well connected inside the fixing column in a threaded mode conveniently through cooperation with a bearing, and then a cover plate can be fixed to the upper portion of the toolkit; as a clamping plate is fixedly installed on the inner wall of the left side of the toolkit, a grinding machine can be conveniently inserted in the clamping plate; tapping grooves are formed in the periphery of the upper surface of a first storage plate, and thus threads can be stored in the tapping grooves conveniently; and by forming an insertion groove in the upper surface of a second storage plate, pliers can be conveniently inserted in the insertion groove for storage.

The invention provides an optical cable distribution box, and belongs to the field of optical fiber connection. The optical fiber distribution box comprises a cabinet body, an incoming optical fiber connector and an outgoing optical fiber connector, wherein an obtuse included angle is formed between an end extension line of the incoming optical fiber connector and an end extension line of the outgoing optical fiber connector. Compact and optical channel connection quality can be considered.