72results about How to "No risk of falling off" patented technology

The invention provides granite simulation paint and a preparation method thereof. The granite simulation paint mainly comprises an emulsion, cellulose ether, aggregate and composite rock slices. The granite simulation paint has very strong pattern creativity and can simulate a plurality of granite textures. Compared with the same type of products, the granite simulation paint has beautiful and lasting effects, strong texture sense, excellent weatherability, fouling resistance, color retention and alkali resistance, is aqueous and nontoxic, utilizes the composite rock slices to replace natural rock slices, and is green and environmentally friendly.

The invention relates to a petroleum pipeline laying and mounting construction method, in particular to a petroleum pipeline laying and mounting construction device. The device comprises a crawler type moving chassis, a bearing platform plate fixedly mounted on the crawler type moving chassis, multiple ground-gripping supporting mechanisms fixed to the bearing platform plate, a lifting mechanism arranged on the upper end surface of the bearing platform plate, a feeding conveying mechanism arranged on the lifting mechanism and two self-clamping components arranged on the feeding conveying mechanism and used for clamping a petroleum pipeline; and the ground-gripping supporting mechanisms are distributed and mounted on the two opposite sides of the bearing platform plate. By the aid of the device, the safety during laying construction is improved, and the petroleum pipeline can be sent to the laying and mounting position conveniently and accurately.

The invention belongs to the technical field of manufacture of engine parts, and relates to a cylinder body structure of an air and water cooling engine. The cylinder body structure is characterized in that a cylinder sleeve is composed of a cylinder sleeve inner sleeve (4-1) and a cylinder sleeve outer sleeve (4-2), wherein a cooling water cavity (6) is composed of an enclosed space formed between the cylinder sleeve inner sleeve (4-1) and the cylinder sleeve outer sleeve (4-2); a wall of the cylinder sleeve inner sleeve (4-1) is provided with at least two cylinder-shaped ear holes (5) which are vertically communicated, and a cylinder body shell (3) and the outer surface of the cooling water cavity (6), the outer wall surface of the cylinder sleeve outer sleeve and part of the outer wall surface of the cylinder sleeve inner sleeve are combined in a non-gap manner. The cylinder body structure provided by the invention has the advantages that the structure design is reasonable and simple, the manufacturability of manufacturing is improved, the manufacturing cost is reduced, the cylinder body structure has another characteristic that the cooling effect is improved, and meanwhile, the water-leaking hidden danger of the cylinder body structure of the existing air and water cooling engine is overcome.

The present invention discloses a repair method for the internal pump shell the imported dredger high chromium cast iron mud pump and the internal pump shell the domestic dredger high chromium cast iron mud pump; the rust and burr on the fretted surface of the internal pump shell of the mud pump is removed and angles are ground on a plurality of parts according to requirements. With the short-arc welding of multi-pass welding and skip welding processes, a priming coat of reticular arrangement is welded on the clean internal pump fretted surface of the mud pump; at the same time, the welding seams are beat to remove the stress and avoid crack formation and control the interpass temperature on the priming coat surface. With the short-arc welding of the multi-pass welding and skip welding processes adopted by UTP abrasion welding rod and DC welder, a first abrasion layer, a second abrasion layer, an isolating layer, a third abrasion layer and a fourth abrasion layer are welded on the priming coat and the interpass temperature of every layer is controlled. The repaired internal pump shell of dredge mud pump will not be deformed and the matrix will not be damaged; the welded layers are abrasion and impact resistant; the cost can be saved by 70 to 90 percent; the service life can be prolonged by 3 to 5 times. Therefore, the present invention has great dissemination value.

The invention relates to an aerospace oxygenerator which comprises a case, a compressor, a distribution valve, a gas cylinder and two molecular sieves, wherein a bottom plate for packaging is arranged at the bottom of the case; a compression system box is arranged on the bottom plate; the compressor is supported in the compression system box; a gas inlet mechanism is arranged at the lower part of the front end face and/or the rear end face of the case, and communicated with the compressor by a gas inlet silencer; the compressor is connected with the two parallel molecular sieves by the distribution valve respectively; the two molecular sieves are connected with the gas cylinder by the distribution valve; the distribution valve is communicated with a gas outlet silencer; the gas outlet silencer is communicated with the compression system box; and the compression system box is communicated with an exhaust mechanism arranged at the lower part of the left side face and/or the right side face of the case. The aerospace oxygenerator is compact in structure, convenient, quick, stable and safe to use, easy to dismount and clean, and noise-free; the use comfort can be ensured effectively; and the service life can be prolonged.

The invention relates to a tuyere tip for both an American tuyere and a French tuyere, comprising a shell body with a body part, wherein a shaft hole is disposed in the middle of the body part; a rotary piece held in the shaft hole of the body part of the shell body and capable of rotating, wherein the both ends of the rotary piece project out of the shaft hole of the body part to form head parts capable of being held by fingers, the two head parts are provided with a screwing hole respectively, one screwing hole is screwed with the French tuyere and the other screwing hole is screwed with the American tuyere, and an annular gas passage is formed between the body wall of the rotary piece and the body part of the shell body; two leakage-stopping rings disposed on the body wall of the rotary piece and located at the both sides of the annular gas passage respectively; a penetration hole disposed on the body wall of the rotary piece and at a position corresponding to the annular gas passage, and used for connecting the annular gas passage with a holding space; a valve seat held in the holding space of the rotary piece, and provided with a valve centre towards the screwing hole end of the American tuyere; and a spring disposed in the holding space of the rotary piece, wherein one end of the spring resists against the inner end wall of the screwing hole end of the French tuyere, and the other end of the spring resists against the inner end wall of the valve seat, so that the valve seat is close to the screwing hole end of the American tuyere in a static state.

The invention relates to an integrated wood formwork. The integrated wood formwork comprises a face plate, a plurality of wood longitudinal beams and a plurality of steel pipe horizontal beams; the plurality of wood longitudinal beams are pressed on the outer side surface of the face plate through the plurality of horizontally arranged steel pipe horizontal beams; a plurality of cotter holes respectively corresponding to the plurality of steel pipe horizontal beams are formed in the wood longitudinal beams; a plurality of U-shaped cotters are inserted in the plurality of cotter holes respectively; and the two ends of each U-shaped cotter are fastened and connected on each steel pipe horizontal beam corresponding to each U-shaped cotter. According to the invention, the integrated wood formwork is formed by locking and pressing the wood longitudinal beams and the steel pipe horizontal beams on the face plate through the U-shaped cotters and 3-shaped clips, and has the advantages that the structure is simple, the connection is stable and firm, the assembly and disassembly are convenient, the service life of the material is long, recoverability is realized and the resource is saved; a plurality of integrated wood formworks can be jointed together and used in a combined manner, so as to meet the requirements of different application specifications; and the applicability is wide.

The invention discloses a leftward and rightward door opening mechanism and a refrigerator. The leftward and rightward door opening mechanism comprises a hinge module arranged on a refrigerator door body and a driving module arranged on a refrigerator box body, wherein the driving module comprises a driving bottom plate, two first gears oppositely arranged on the driving bottom plate, a driving rack driven through the first gears and second gears separately driven by the first gears, and the driving rack is guided and limited by the second gears; the hinge module comprises a hinge bottom plate and two hinges oppositely arranged on the hinge bottom plate, and the hinges drive the first gears; when the two hinges are both meshed with the first gears, the door body is locked; and when the hinge on one side is separated from the first gear but the hinge on the other side is still meshed with the first gear, the door body is open. As rotating shafts are arranged on the door body, the door can be opened from the left side as well as the right side without making any adjustment.

The invention relates to an inwards tilting hopper window of a curtain wall. The hopper window comprises an upright post, toughened glass, an upper cross beam, a lower cross beam, a curtain wall window sash, an electric starting device and hardware, wherein the curtain wall window sash is arranged on the lower cross beam and can rotate around the lower cross beam; and the electric starting device is connected with the curtain wall window sash and drives the curtain wall window sash to rotate. Compared with the prior art, the inwards tilting hopper window has the advantages of capability of improving indoor visual effect and safety, suitability for large windows and the like.

The invention discloses a carbon fiber negative-ion transmitting end assembly with a detection line. The assembly comprises a plurality of transmitting heads, the transmitting heads are disposed on a base strip side by side, nuts are embedded in the base strip, and the base strip is buckled and connected to a bottom box; each transmitting head comprises a metal head, each metal head has two-segment structure, a carbon fiber beam is plugged into the front segment of each metal head via a jack and is fixed through tin soldering, and a threaded rod part of the rear segment of each metal head is fixedly connected with the corresponding nut; the bottom box is provided with a bus board, and the bus board abuts against far ends of the threaded rod parts of the metal heads; and the bus board has printed circuit board structure formed by a substrate, part of a copper-clad layer on the substrate form the detection line, the detection line and copper-clad layer part conductive with the transmitting heads are insulated from each other, and, when the conductive copper-clad layer part of the transmitting heads is provided with a set potential, an induction charge is formed on the detection line. The assembly is advantageous in that the transmitting heads of a transmitting end are convenient to replace, and the detection line does not need to be independently disposed; and the assembly has the advantages of firm carbon fiber beam soldering, reliable electric connection, simple structure and convenient assembly and disassembly.

The invention belongs to the technical field of advertising devices and particularly relates to an easy-advertisement-replacement advertising lamp box for a bus shelter. A bobbin is arranged at the top of the inner side of a lamp box body, a push-pull rod is connected to one end of the bobbin and connected with a rotation shaft, and the rotation shaft is sleeved with a self-locking bearing; the other end of the bobbin is connected with a control ring, and a groove is formed in the control ring; a rotation handle is arranged in the control ring and provided with a bump matched with the groove in the control ring; the bobbin is connected with an upper positioning tube through a pull rope, through holes are formed in the two sides of the lamp box body, and positioning pins are arranged at thethrough holes; a limit groove is formed in the bottom of the lamp box body and comprises a slit, a lower positioning rod is arranged in the limit groove, advertising base cloth is fixedly connected between the upper positioning tube and the lower positioning rod, and a groove cover for sealing is arranged on the limit groove. According to the lamp box, the process of replacing a poster is extremely simple, a lamp box cover does not need to be opened during replacement, and the box is safer and more reliable.

The invention relates to a variable anti-counterfeiting computer hologram prepared based on femtosecond laser, and belongs to the technical field of laser application. According to the invention, a hologram composed of micro-pit structures of three sizes is processed on a heat shrinkable film through femtosecond laser, information recorded by the hologram is formed by combining computer generatedholograms corresponding to two kinds of optical patterns, and the two kinds of optical patterns are shown under irradiation of the laser. By controlling the heating temperature, the heat shrinkable film shrinks, the micro-pit structure with the minimum size shrinks until the transmittance of incident light is hardly influenced, information recorded by the hologram is changed, and finally only oneoptical pattern is presented, so that the change of hologram imaging content is realized. The problems that single holographic imaging is poor in anti-counterfeiting capacity and a variable holographic imaging manufacturing process and an imaging device are complex and difficult to popularize at present are solved. The method is simple in imaging change principle, achieves integration of packagingand anti-counterfeiting, is high in operability, and can be applied to the field of product anti-counterfeiting and information encryption.

The invention provides a decorative face accessory, which facilitates the unfolding and folding of foot stool parts and can be firmly positioned. The decorative face accessory comprises a decorative mask, a first foot stool part and a second foot stool part, wherein the first and second foot stool parts are pivoted with the decorative mask; positions of the decorative mask corresponding to the eyes of a face respectively have a hollow hole, the two side edges of the decorative mask are respectively provided with a bulged part, and the reverse side of each bulged part is provided with a corresponding groove; and clamping sections which can be attached to the periphery of the head of a user, and clamped on the ears of the user, and position the decorative mask in front of the face extend from one ends of pivoted parts of the first and second foot stool parts, and arched and hook-shaped positioning sections which can be buckled into the grooves so as to enable the first and second foot stool parts to be positioned firmly extend from the other ends of the pivoted parts.

The invention discloses a hoisting wire pulley device for a crane. The device comprises a shell, a connecting plate is welded to the lower end of the shell, a base plate is connected to the lower endof the connecting plate through spring assemblies, a hook lock is fixed to the lower end of the base plate, three shaft rods are sequentially arranged in the shell, pulley bodies are connected to theouter parts of the three shaft rods in a rotating mode, grooves are formed in the outer surfaces of the pulley bodies, meanwhile, each spring assembly comprises spring bodies and two spring seats, andthe two spring seats are fixed to the two ends of the corresponding spring bodies. The device has the advantage that the shell, screw caps, the connecting plate, the spring assemblies, the base plate, a damping pad, the pulley bodies, the shaft rods, nuts, the spring bodies, the spring seats and protective covers are arranged, so that the problems that the safety of a hoisting wire pulley devicefor a crane at the present stage is low in the using process, and goods are prone to shake due to the fact that a pressure buffering device is not arranged can be solved.

The invention provides a manufacturing technology of an integrated forged steel piston. The manufacturing technology comprises the steps of carrying out rough machining on a forged piston head part and a piston skirt part; smearing a borax soldering flux on a welding area of the piston head part; assembling the piston head part and the piston skirt part, and carrying out heating; and after heating, taking out a workpiece, and naturally cooling the workpiece. After the technology is adopted, weld joints generated through piston friction welding are avoided, the risk that hard grains falling due to the fact that the weld joints are washed through cooling oil are liable to scratch a cylinder of an engine is reduced, the piston head part and the piston skirt part are welded through adopting brazing, the technology is simple, the equipment investment is low, and multiple same or different products can be welded at a time.