2407 results about "Screw cap" patented technology

The air inlet and return pipe comprises an air inlet and return pipe body and end nuts connected to the two ends of the air inlet and return pipe body, the air inlet and return pipe body is of a bilateral symmetry structure, and internal threads are arranged on the inner circumferential surfaces of the end nuts connected to the two ends; the air inlet and return pipe body is of a double-layer structure, the outer layer is a woven mesh made of stainless steel, and the inner layer is a fluoroplastic hose. End supports are respectively arranged at the joints of the two ends of the air inlet and return pipe main body and the end nuts, and are used for connecting the air inlet and return pipe main body and the end nuts; the length of the end portions of the two sides of the fluoroplastic hose is slightly larger than that of the woven mesh, and a turnup structure is formed at the end supporting position so that a sealing structure can be formed when the end nut is in threaded connection with other parts, the flexibility of the air inlet and return pipe of the pulse tube refrigerator is guaranteed, vibration can be greatly reduced, meanwhile, gas flow resistance is reduced, and working efficiency and refrigerating capacity are improved.

The invention discloses a screw cap structure with a face shell convenient to replace and a lacing device comprising the screw cap structure, the screw cap structure with the face shell convenient to replace comprises an inner screw cap and the face shell, the face shell is detachably installed on the outer side of the inner screw cap, a clamping block is arranged on the face shell, a separating and combining structure is arranged on the inner screw cap, and the clamping block is detachably installed on the outer side of the face shell. The clamping block is matched with the separation and combination structure to realize clamping and separation of the inner screw cap and the surface shell; the opening and closing structure comprises a first position and a second position, and when the clamping block and the opening and closing structure are connected in a matched mode at the first position, the face shell and the inner screw cap can be connected in a linkage mode. And the face shell can also rotate relative to the inner screw cap, so that the clamping block is rotated to a second position of the separating and combining structure, and the face shell and the inner screw cap are separated from each other at the second position, so that the disassembly between the face shell and the inner screw cap is more convenient, and the requirement of a user for quickly replacing the face shell is met.

The invention provides a mine inspection robot, and relates to the technical field of inspection robots, the mine inspection robot comprises a body and a mechanical arm mechanism, the mechanical arm mechanism is arranged at the top of the body, driving wheel sets are fixedly installed on the two opposite sides of the body, a snake-shaped mechanical arm is arranged at the output end of a connecting end shaft, and the main body of the mine inspection robot is composed of a plurality of arm body small sections; the side, away from the connecting end shaft, of each arm body small section is detachably provided with a connecting screw cap, the hinged position of each arm body small section is sleeved with a rubber protective sleeve, and the outer wall of each connecting screw cap is provided with an arc-shaped protruding structure used for supporting the strength of the corresponding connecting screw cap and protruding to expand the corresponding rubber protective sleeve. According to the invention, the joint is sealed and actively cleaned through segmented supporting and the rubber protective sleeve, so that the problems of joint failure, frequent maintenance and the like caused by movement clamping stagnation and dust invasion which are difficult to deal with by a conventional snake-shaped mechanical arm in a high-dust and multi-bending environment under a mine are effectively solved; and meanwhile, the problems that joints are blocked by accumulated dust and sealing is eroded in the high-dust environment under the mine are solved.

The invention discloses an unmanned underwater vehicle floating material fixing structure, and relates to the technical field of underwater vehicle buoyancy materials. In order to solve the problems that in the prior art, a buoyancy material of an underwater vehicle is generally fixedly connected with the vehicle through a bolt, a polycarbonate protective layer is sprayed outside a hollow glass bead floating material, the floating material is easily damaged by replacing the buoyancy material and disassembling the bolt in the later period, and the buoyancy material is relatively fragile and cannot be damaged. The floating material is abraded due to repeated disassembly, and the polycarbonate protective layer is easy to fall off after long time, and the like. The device comprises a floating material, a screw sleeve, a nut sleeve and a protective layer, the floating material is arranged in an aircraft cabin composed of a framework and a non-pressure-resistant shell, a bolt through hole is machined in the floating material, a screw sleeve and a nut sleeve are embedded in the bolt through hole, and the outer portion of the floating material is integrally wrapped with a protective layer. The method is used for mounting and fixing the floating material of the unmanned underwater vehicle.

The utility model discloses a 3D printing porous pedicle screw which comprises a screw body part and a screw cap part, the screw body part comprises a cortical bone thread area close to one end of the screw cap part and a cancellous bone thread area far away from one end of the screw cap part, and a porous structure area is arranged at one end, not connected with the screw cap part, of the screw body part. The porous structure area comprises an inner core column extending in the axial direction of the nail body part, at least one reinforcing beam and a porous structure, the reinforcing beams extend outwards from the periphery of the inner core column, and the porous structure is annularly distributed on the outer periphery of the inner core column. The porous structure can efficiently induce bone tissue to grow in, the screw and a vertebral body are connected into a whole, stress is effectively dispersed, the stability of the screw is improved, the porous structure is arranged on the vertebral body at the front end of the screw, screw breakage caused by stress concentration of the screw in a vertebral pedicle area can be avoided, meanwhile, the stability of the screw can be better improved through the reinforcing beam, and the service life of the screw is prolonged. The possibility of fracture of a porous area of the screw is reduced, generalization performance is better, and the use experience feeling is improved.

A resealable dispensing element for a composite package is shown and described including a main body with a flange and a hollow cylindrical spout with at least one outer thread, an opening means guided movably in the spout for opening the composite package and a resealable screw cap, having an anchor ring. The screw cap serves to drive the opening means when the composite package is opened for the first time and wherein the screw cap and the anchor ring are connected by a plurality of breakable material bridges or at least by a material anchorage for connection to the main body. The main body on the spout has at least one circumferential web for securely holding the anchor ring and wherein the anchor ring has on its inside a circumferential retaining web shaped such that it corresponds with the circumferential web, as well as a method for mounting the screw cap for such a dispensing element. In order to reliably rule out tilting of the anchor ring during the mounting process of the dispensing element, it is provided that the main body has a plurality of vertical guide ribs arranged distributed over the circumference on the spout between the outer thread and the circumferential web for uniformly stretching the anchor ring when the screw cap is applied during the mounting of the dispensing element.

The utility model discloses a solid-liquid separation bottle cap with a simple structure, which comprises a bottle cap seat, a jacking piece and a screw cap, the lower end of the bottle cap seat is provided with a connecting part for connecting a bottle body, the upper end of the bottle cap seat is provided with an external thread, the screw cap is provided with an internal thread, and the screw cap is in threaded connection with the upper end of the bottle cap seat through the matching of the external thread and the internal thread; an axial storage cylinder is arranged in the center of the bottle cap seat, a sealing piece is integrally formed at the lower end of the storage cylinder, and a tearing part is arranged between the sealing piece and the storage cylinder; according to the utility model, the extrusion inclined plane is adopted to push the ejection piece to move to realize opening, and threads do not need to be arranged between the ejection piece and the bottle cap seat, so that the structure of a product and the structure of a mold are simplified, and the production efficiency is improved; the sealing piece can be jacked open while the rotary cover is rotated to be opened, liquid can be poured out without taking out the jacking piece after the rotary cover is opened, and use is easy and convenient.

The utility model provides a spherical contact type movable joint, and belongs to the field of high-pressure pipe fitting manufacturing. The connecting device comprises a main body, a joint and a connecting nut, a thread is arranged at one end of the main body, and the joint is clamped in the coupling nut; the coupling nut is connected with the thread, so that the joint is connected with the main body; a spherical plug is arranged at one end, facing the main body, of the joint, and an arc-shaped groove is formed in the main body; a sealing gasket is arranged in the groove; and the spherical plug is in contact with the groove through the sealing gasket. According to the utility model, the joint and the main body are directly designed to be in spherical contact and are sealed by the sealing gasket, so that the sealing effect is good, and leakage caused by vibration can be effectively avoided.

The invention provides a full-automatic pretreatment system and method for a soil sample, and belongs to the field of soil sample treatment.The system comprises a weighing device, a digestion device, a transfer device and a constant volume device with a workbench, the constant volume device comprises a first mechanical arm used for grabbing and cap screwing, a second mechanical arm used for pipetting, an annular conveying unit provided with a plurality of pipe supports, a pipe clamping unit and a liquid level calibration unit, and the pipe supports are provided with containing grooves matched with digestion pipes and colorimetric pipes respectively. The first manipulator is set to grab and screw caps of the digestion tube and the colorimetric tube from a first position of the annular conveying unit, and the second manipulator is set to transfer liquid from a second position of the annular conveying unit. The full-process automatic operation from weighing to final volume fixing and subpackaging of the soil samples is achieved, the working efficiency of the system is remarkably improved, and especially the treatment efficiency of a large batch of soil samples is improved.

The invention discloses a printed circuit board and electronic equipment, and relates to the technical field of printed circuit boards, the printed circuit board comprises a circuit board main body and an elastic part, a buffer groove is arranged at the outer side of a fixing hole of the circuit board main body, and the elastic part is installed, so that the elastic part is elastically abutted against a screw cap, and buffer vibration absorption and stress dispersion during screw fastening are realized; local stress concentration caused by rigid contact is avoided, and the problems that in the prior art, stress around a screw hole is concentrated in the screwing process of a screw, consequently, a server mainboard cracks or deforms, and the performance and the service life of electronic equipment are affected are solved. The technical effects of improving the mechanical stability of the circuit board, prolonging the service life and enhancing the equipment reliability are achieved.

The invention discloses an instantly-prepared beverage bottle cap, a beverage bottle and a filling method of the instantly-prepared beverage bottle cap, the bottle cap comprises a spiral upper cap and a spiral lower cap, a pull ring is connected between the spiral upper cap and the spiral lower cap, and a poking cone is movably arranged in the lower cap; the lower cap comprises a lower cap body in threaded connection with a beverage bottle opening and a containing cavity penetrating through the lower cap body and integrally connected with the lower cap body, and the bottom of the containing cavity is closed. The top of the containing cavity communicates with a connecting body, and a limiting ring is arranged at the communicating position of the connecting body and the containing cavity and on the inner wall of the connecting body. A lower shell integrally formed with the lower end of the connecting body is arranged on the outer side of the lower cover body; the poking cone comprises a cylindrical barrel and a conical puncturing structure, an annular flange is arranged on the upper portion of the cylindrical barrel and makes contact with the inner wall of the connecting body, an extrusion ring is arranged at the inner end of the top of the upper spiral cover and tightly attached to the annular flange, and the upper spiral cover rotates to drive the extrusion ring to extrude the annular flange to slide. And the poking cone is driven to slide in the connecting body to pierce the bottom of the accommodating cavity. The problem that the bottom of the dissolving cavity is not easy to poke is solved.

The utility model discloses a long pipe type storage cover and a packaging bottle. The storage cover comprises a rotary cover, a lower cover, a storage tube and a moving part, the lower cover, the storage tube and the moving part are transparent, the turned edge of the storage tube is configured to be pressed on the bottle opening of the bottle by the lower cover, a first elastic layer is arranged at the upper end part of the storage tube, and a part of the first elastic layer is located between the turned edge and the lower cover; the top end of the moving part can be connected with the screw cap, the moving part is in threaded connection with the lower cap so as to be driven by the screw cap to rotate and move downwards relative to the lower cap, and a second elastic layer is arranged on the outer surface of the neck of the moving part. The lower cap is provided with an inner skirt capable of extending into a bottle opening of the bottle, the inner skirt is located between the storage pipe and the moving part, the outer surface of the inner skirt makes contact with the first elastic layer, and the inner surface of the inner skirt makes contact with the second elastic layer. The part, extending into the bottle, of the storage cover is transparent, so that internal substance observation and quality supervision are facilitated, and attractiveness and sealing performance can be taken into consideration at the same time.

The utility model discloses a steel beam bolt with an anti-loosening function, which comprises a hexagon nut, the top of the hexagon nut is fixedly connected with a fixed wedge-shaped ring, the top of the fixed wedge-shaped ring is fixedly connected with a screw rod, a channel is arranged in the screw rod, a glue blasting bead is arranged in the channel, and the glue blasting bead is fixedly connected with the screw rod. A flow dividing hole is formed in one end of the screw rod, a wedge-shaped gasket is arranged outside the screw rod, the outer wall of the screw rod is in threaded connection with a fastening nut, and the outer wall of the screw rod is in threaded connection with an anti-disengaging nut. According to the steel beam bolt with the anti-loosening function, the channel is filled with the paraffin filler, the chemical characteristic that paraffin melts after being heated is adopted, the glue blasting bead enters the connecting gap of the screw along with melting of the paraffin, the coating of the glue blasting bead is heated to be dissolved, and therefore threads and the connecting gap are filled, and the anti-loosening function is achieved. And in combination with a paraffin solution, a tight filling layer is formed between the threads, so that strong adhesive force and vibration resistance are provided.

The invention belongs to the technical field of petroleum and natural gas development, and particularly relates to a visual reservoir core relative permeability high-precision measuring device and method based on an unsteady state method. The device comprises a clamp holder, three glass tubes, a flow drum, a water metering pump, a gas-liquid separation tube, an annular pressure pump, a gas cylinder, an annular pressure sensor, a pressure regulating valve and an injection pressure sensor. The holder comprises a support, a barrel, a pull rod nut assembly, an adjusting screw rod, a restraint frame, an inlet plug, two pressing caps, a baffle ring, a sealing ring, a rock core cone, a transparent rubber sleeve and an outlet plug. The method comprises the following steps: 1, core pretreatment; 2, carrying out liquid measurement on the permeability; 3, displacement pressure is determined; 4, calculating the pore volume of the rock core; and 5, gas-driven water test and dynamic permeability calculation. The problems that reservoir rock core relative permeability measuring equipment is complex, inaccurate and difficult to use, and the stress state of the rock core is not comprehensively simulated are solved.

The utility model belongs to the field of camera lenses, and particularly relates to a camera lens convenient to replace, which comprises a lens body, and a lens seat is mounted in an inner cavity of the lens body. According to the utility model, through the arrangement of the positioning mechanism, the lens body is firstly placed in the lens seat, after the lens body is installed, the positioning seat is pushed to move, the positioning seat drives the connecting plate to move, the connecting plate drives the elastic clamping block to move, and the surface of the elastic clamping block can be inserted into the inserting groove in the moving process of the elastic clamping block; the positioning seat can be stably fixed on the front side of the lens body and the lens body can be conveniently fixed in the lens seat, so that the problems that the lens is generally fixedly mounted through a threaded screw cap, and the screw cap is generally firmly connected with the lens in order to ensure the stability of the lens, so that the lens is difficult to fix are solved. Therefore, the problem that the replacement efficiency of the lens is reduced due to the fact that the lens is very inconvenient to disassemble is solved.

The color steel tile clamp comprises a left clamp body and a right clamp body, a movable groove is formed in the left clamp body, and a locking structure movably connected with the left clamp body is installed in the movable groove; an embedding groove matched with the locking structure is formed in the position, corresponding to the locking structure, of the right clamp body, the locking structure can be turned over to be arranged in the embedding groove to form relative locking of the left clamp body and the right clamp body, and the locking structure comprises a movable block rotationally arranged in the movable groove and a threaded column connected to one side face of the movable block; a fastening nut is assembled on the surface of the threaded column in a threaded mode. According to the color steel tile clamp, through the arranged locking structure, when the clamp is installed on a color steel tile in a buckled mode, the locking mechanism is directly turned over to be clamped into the embedding groove, fastening installation of the left clamp body and the right clamp body can be achieved by rotating the fastening nut, and the locking structure can be scattered in subsequent disassembly and installation; and the situation that parts fall off and are lost is avoided.

A captive screw closure with a tamper-evident band and a screw cap captively connected thereto is disclosed. The screw closure includes an outer surface with an internal thread and an upper surface. The mechanical strain on the retaining bands are substantially reduced. This is achieved by the screw closure having at least one pulling element which permits a pure axial longitudinal movement of the screw cap to the tamper-evident band in the direction of the longitudinal axis of the screw closure. The screw closure includes a pivoting element, in particular a pivoting plate, connected either fixedly or pivotably to the tamper-evident band. The pivoting element, in particular the pivoting plate, is detachably connected to the screw cap. The pivoting element, in particular the pivoting plate, may be connected to the screw cap in a fixed but pivotable manner.

The utility model provides a nozzle hose straightening device for a floral water screw cap, and relates to the field of nozzle hose straightening, two clamping blocks are oppositely and fixedly connected to the left side face and the right side face of a mounting plate, a reinforcing frame is fixedly connected between a bottom plate and the mounting plate, and a main body of the reinforcing frame is of a triangular structure; the problems that in the prior art, a nozzle hose needs to be inserted into a floral water bottle body through a mechanical arm, due to the fact that the bending directions of the nozzle hose are inconsistent, the nozzle hose is prone to failing to be inserted into the bottle body, and then the production efficiency of floral water is affected are solved. According to the floral water bottle cap straightening device, the connecting base fixedly connected to the bottom end face of the bottom plate and the clamp are arranged, so that when the floral water bottle cap needs to be straightened, a clamped and limited workpiece can be automatically clamped and positioned through the clamp; by means of the design, automatic straightening operation of the floral water bottle cap hose can be achieved, and then the purpose of improving the working efficiency is achieved.

The utility model discloses a clamp for locking a cylindrical object. The clamp comprises a fixing frame, a clamping device and a locking device, one end of each main clamping finger is hinged to the fixing frame; the two double-thread screws are connected with the two main clamping fingers respectively, anti-falling nuts are fixed to the two ends of each double-thread screw, the positions, located between the two anti-falling nuts, of each double-thread screw are sleeved with two auxiliary clamping fingers at intervals, the two auxiliary clamping fingers are located on the two sides of the main clamping fingers respectively, and a cylindrical object is clamped among the four auxiliary clamping fingers; the locking screw rod is arranged on the fixing frame in a penetrating mode, one end of the locking screw rod is in threaded connection with a screwing cap, the other end of the locking screw rod is fixedly provided with a locking conical block, the locking conical block is located between the two main clamping fingers, and one ends of the two main clamping fingers make contact with the conical face of the outer wall of the locking conical block. According to the clamp, mechanical locking clamping is adopted, motor driving clamping is not needed, and the problem that a gripper cannot be used due to the fact that a motor breaks down is solved; according to the clamp, the four auxiliary clamping fingers are adopted, and compared with two grippers, the clamping stability is improved.

The invention provides a sterile filling process control method and system for midazolam oral liquid nitrogen charging protection, and relates to the technical field of medicine filling process control. After midazolam oral liquid is subjected to nitrogen charging, a headspace gas multispectral image sequence in a bottle before sealing is collected through a transmission imaging system integrated with a filling line; extracting oxygen characteristic absorption wave band light intensity attenuation data through spectrum separation, and generating a bottleneck plane oxygen two-dimensional concentration diagram; calculating the local oxygen partial pressure of the pixel, and constructing a three-dimensional oxygen concentration field and marking an oxygen-enriched area by combining pre-stored geometric parameters of the bottle body; and then the model reference adaptive controller is used for comparing the model with an ideal nitrogen model to generate supplementary parameters containing purging angle, intensity and time, an execution mechanism is driven to perform fixed-point pulse purging, and after verification reaches the standard, a screw cap is used for sealing, so that accurate detection, directional processing and standard verification of the headspace oxygen-enriched area in the midazolam oral liquid bottle can be realized, and the safety of the midazolam oral liquid bottle is ensured. And the oxygen concentration before sealing meets the standard.

The invention discloses a copper-magnesium-aluminum spot welding device, and relates to the technical field of spot welding of dissimilar materials. The device comprises a hydraulic rotary seat, a driving assembly is installed at the top of the hydraulic rotary seat, a driving shaft is installed at the output end of the driving assembly, a jacking sleeve assembly is fixedly installed at the bottom of the hydraulic rotary seat, and the driving shaft is rotationally connected into the hydraulic rotary seat and the jacking sleeve assembly; a jacking oil cylinder is fixedly connected to the bottom of the hydraulic rotary seat, a gap exists between the jacking oil cylinder and the jacking sleeve assembly, and a plate to be connected is placed between the jacking oil cylinder and the jacking sleeve assembly. Through the unique design of the internal threads and the external threads of the cock sleeve and the synergistic effect of the driving motor and the hydraulic system, high-quality spot welding of the copper-magnesium-aluminum dissimilar alloy is achieved, and the problems of joint brittle failure caused by excessive intermetallic compounds in traditional melting spot welding and gaps existing in traditional riveting are effectively solved.

The utility model provides an industrial wastewater purifying and circulating device, which relates to the technical field of wastewater purifying and circulating, and comprises a machine body, a water inlet arranged on the top surface of the machine body, a water collecting hopper arranged inside the machine body, a screw cap arranged at the bottom of the water collecting hopper, an annular pipe arranged around the outside of the screw cap, and six fixing frames arranged at the bottom of the water collecting hopper, during use, sewage enters the water collecting hopper in the machine body from the water inlet in the top surface of the machine body for coarse filtration and falls into the settling tank through the through hole for settling, and when foreign matters are clamped in the through hole of the water collecting hopper, the water pump can be connected to an external power supply, so that the water pump is electrified and started; the water pump can convey sewage in the settling tank to the annular pipe through the pipeline, the sewage is sprayed to the water collecting hopper in a high-pressure water column mode through the high-pressure rotating nozzle installed on the annular pipe, and foreign matter clamped in a through hole of the water collecting hopper is flushed off through the high-pressure water column. The defect that the foreign matter clamped in the hole cannot be shaken off due to falling is overcome.

The invention relates to the technical field of depth measurement, and discloses a depth measuring device for rock-soil geological exploration, which comprises a well depth ruler body and a steel ruler cable connected to the well depth ruler body, the cross section of the steel ruler cable is an arc-shaped plate, the inner side of the steel ruler cable is slidably connected with a fixed plate, and two sides of the fixed plate are fixedly connected with rotating shafts. The outer wall of each rotating shaft is rotationally connected with a clamping plate, the inner side of each clamping plate is attached to the outer side of the steel ruler cable, the middle of the side, away from the steel ruler cable, of each clamping plate is fixedly connected with a fixing base, the surface of each fixing base is fixedly connected with a half-stud, the two half-studs are matched in shape and position, and the outer walls of the half-studs are in threaded connection with fixing nuts. A balancing weight is connected between the fixing nut and the fixing base in a sliding mode. According to the depth measuring device for rock-soil geological exploration, the clamping plate and the fixing plate are matched with each other, so that bending deformation of a steel ruler cable is effectively limited, and the accuracy of depth measurement is improved.

The utility model relates to the technical field of earthworm breeding, and discloses a breeding box for earthworm breeding, which comprises a box body and an upper cover, a through opening is arranged in the middle of the surface of the upper cover, a feeding cylinder is vertically fixed in the middle of the inside of the box body, and a plurality of through openings are uniformly arranged on the surface of the outer ring of the feeding cylinder. The upper portion of the feeding cylinder penetrates through the upper portion of the upper cover through a penetrating opening, a screw cover is connected to the upper portion of the feeding cylinder in a screwed mode, supporting frames are vertically fixed to the surfaces of the front end and the rear end of the box body, observation openings are formed in the positions, on the inner sides of the supporting frames, of the surface of the box body, and glass is fixedly embedded into the observation openings. According to the technical scheme, the vertical feeding cylinder is arranged in the box body and penetrates through the upper portion of the upper cover, the feeding cylinder can be sealed and the upper cover can be locked by screwing the screw cap, feeding can be conveniently carried out without taking down the upper cover, soil conditions and humidity can be conveniently observed through the arranged observation opening and glass, and the feeding device is convenient to use. Similarly, the box body does not need to be opened, and the spraying holes of the annular pipe are used for spraying water for humidification when needed.

The utility model relates to the field of corner pasting machine equipment, and discloses a paperboard double-piece preventing mechanism of a corner pasting machine, which comprises two deviation-preventing limiting baffles, the two deviation-preventing limiting baffles are arranged in parallel, one end of the top of each deviation-preventing limiting baffle is provided with a limiting plate, and the middle of each limiting plate is provided with a through hole. And pressing screws penetrate through the through holes of the two limiting plates correspondingly, the two pressing screws penetrate through the top of the anti-deviation limiting baffle, and the ends, located on the limiting plates, of the two pressing screws are each provided with a nut with the size larger than the hole diameter of the corresponding through hole. In the utility model, under the action of the pressing springs, the double-sheet-preventing sawtooth pressing devices on the two sides form certain pressure on the side walls of the paperboards, so that the paperboards stacked below cannot be sucked up at the same time, and the air blowing device blows compressed air to damage the negative pressure between the two paperboards, so that the paperboards at the bottom cannot be sucked up at the same time.

A Multi-component closure is proposed, which comprises a bottom part with a laminar support and a neck arranged thereto in one piece, which comprises a neck opening, a restring enclosing the neck and a first locking element, which is designed in between a neck opening and the restring. A screw cap is provided with a retaining ring and with a closure cap attached via a hinge to the retaining ring, where the retaining ring is kept rotatable by the restring, and where the closure cap comprises at least a second locking element, which in a closed state acts together with the at least one first locking element, to close the neck opening with the closure cap in a liquid-tight manner and that in the closed state a turn of the screw cap around the neck in a first direction causes an opening of the screw cap.

A film covering device for crop planting comprises a vehicle frame, two symmetrically-distributed screws are arranged on the vehicle frame, a film laying frame is arranged on the two screws, adjusting nuts are arranged on the screws, a mounting frame is arranged on the film laying frame, a PE film covering cylinder is detachably connected to the mounting frame through two symmetrically-distributed bolts, a PE film is arranged on the PE film covering cylinder, and the PE film covering cylinder is provided with a plastic film. An extension spring is arranged between the plug pin and the mounting frame, a guide frame is arranged on the film laying frame, an electric push rod is mounted on the guide frame, a pressing frame is arranged on the electric push rod, two sliding blocks are arranged on the guide frame, a sliding frame is arranged on the sliding blocks, the sliding frame is connected to the pressing frame, and the pressing frame is connected to the film laying frame. A compression spring is arranged between the sliding block and the sliding frame, a cutting knife is installed on the sliding frame, automatic unfolding and laying of the PE film are achieved through movement of the frame, the automatic positioning and punching effect of the PE film is achieved through cooperation of the downward pressing frame, the sliding block and the cutting knife, and automation of the device is improved.

The invention belongs to the technical field of transformer gear adjusting, and particularly relates to an excitation-free pole-mounted transformer gear adjusting device which comprises a supporting assembly, an execution assembly and a positioning camera, the supporting assembly comprises a base and a supporting rod arranged on the base, and a supporting arm is arranged at the top of the supporting rod; the execution assembly is arranged below the supporting arm and used for adjusting the gear of the transformer, the positioning camera is arranged on the supporting arm and used for calibrating the position of the execution assembly, the supporting rod is a multi-stage telescopic rod, a connecting block is arranged at the top end of the supporting rod, and one end of the supporting arm is fixed to the connecting block. According to the gear adjusting device, screwing-out and resetting of the protective screw cap are achieved through cooperation of the linear sliding rail and the electric rotary clamping jaw, manual climbing operation is not needed, the high-altitude falling risk and the hidden danger of electric shock existing in climbing operation are effectively avoided, and the working efficiency of gear adjusting is improved.

According to the technical scheme, the automatic assembling machine is characterized in that the automatic assembling machine comprises a workbench, a positioning assembly, a flat gasket feeding assembly, a main body feeding assembly, a waterproof ring feeding assembly, a nut feeding assembly and a comprehensive assembly used for assembling and discharging nuts, and the positioning assembly comprises a rotary disc and a plurality of stations; the multiple stations comprise the flat gasket feeding station, the main body feeding station, the waterproof ring feeding station, the nut feeding station and the discharging station which correspond to the flat gasket feeding assembly, the main body feeding assembly, the waterproof ring feeding assembly, the nut feeding assembly and the comprehensive assembly correspondingly. The multiple stations are each provided with an outer cylinder, an inner cylinder elastically connected with the outer cylinder and a positioning rod with one end penetrating out of the inner cylinder and used for being connected with the main body shell in a sleeved mode, the outer diameter of the inner cylinder is matched with the inner diameter of the outer cylinder, one end of the inner cylinder is limited in the outer cylinder, and the end, used for being connected with the nut, of the main body shell can be partially inserted into the inner cylinder. The problems that in the prior art, procedures are numerous, and occupied space is large are solved.

Attachment for cleaning air filters, comprehensive: - a fixed part of the attachment, which is designed in the form of a connector, - a closed rolling bearing with inner and outer rings, wherein one end of the connecting piece is rigidly connected to the inner ring of the rolling bearing, - a rotor which is rotatably mounted on the outer ring of the rolling bearing in relation to the fixed part of the attachment, - a screw cap, wherein the rotor has a hollow housing comprising an upper and a lower housing surface as well as a side surface connecting the upper and lower housing surfaces, The side surface of the housing has at least two openings whose axes of symmetry are perpendicular to each other and are located in the plane of rotor rotation, with a receiving opening being provided in the middle of the upper housing surface; the outer ring of the rolling bearing engages in the receiving opening of the rotor housing and is then fixed by the screw cap.