54results about How to "Active fixed connection" patented technology

The invention discloses a two-dimensional electrostatic scanning micromirror, which comprises an outer frame, an inner frame and a mirror surface. Outer frame isolation grooves are processed in the outer frame to divide the outer frame into an outer frame measuring part, an outer frame driving part and two outer frame connection parts; an outer feedback comb tooth group is arranged between the outer frame measuring part and the inner frame, an outer driving comb tooth group is arranged between the outer frame driving part and the inner frame, and mirror surface isolation grooves are processedin the mirror surface to divide the mirror surface into a mirror surface feedback part, a mirror surface driving part and a central part; and an inner feedback comb tooth groove is processed between the mirror surface feedback part and the inner frame, and an inner driving comb tooth group is arranged between the mirror surface driving part and the inner frame. The isolation groove of different structures are formed in the outer frame and mirror surface respectively to divide each of the outer frame and the mirror surface into different function parts, the inner and outer comb tooth groups areset as driving and feedback comb tooth groups respectively, deflection angles in two directions of the mirror surface are measured, and thus, reflected in real time, and the deflection angle of the mirror surface can be controlled more accurately.

Aiming at the problem that hydrophilicity and thermal stability of a polypropylene lithium-ion battery separator are poor, the invention provides a method for layer-by-layer self-assembly of polyelectrolyte on the surface of a separator so as to improve the hydrophilicity and thermal stability of the polypropylene lithium-ion battery separator. According to the technical scheme, an aqueous solution polymerization method is adopted for respectively preparing anion polyelectrolyte containing an anion structural unit and cation polyelectrolyte containing a cation structural unit, and a pretreated polypropylene separator is repeatedly and alternately soaked in two polyelectrolyte solutions, so that macromolecule polyelectrolyte is self assembled onto the surface of the polypropylene separator under the action of an electrostatic force; the polypropylene lithium-ion battery separator prepared by adopting the method provided by the invention has high hydrophilicity and thermal stability, a static water contact angle is as low as 30 degrees; after the polypropylene lithium-ion battery separator is treated for 4 hours at the temperature of 130 DEG C, thermal shrinkage of the polypropylene lithium-ion battery separator is about 15% only; the method is easy to operate and strong in practicability, the defects of chemical modification and a general coating method are overcome, and the method disclosed by the invention can be put into industrial production.

The invention provides a sputtering target packaging box, which comprises an enclosed box, a protection body positioned in an accommodating space, a bottom plate and a cover plate, wherein the enclosed box comprises side plates which are connected end to end and are integrally molded; the accommodating space is defined by the side plates; two sides of the protection body are supported on the side plates; the bottom plate is arranged on the protection body and is positioned in the enclosed box; the cover plate is arranged on the top of the enclosed box and has a shape of a frame; each frame of the cover plate is provided with a locking hole or a buckle; and the side plates are correspondingly provided with buckles or locking holes which are matched with the locking holes or the buckles of the cover plate. The sputtering target packaging box does not deform due to external force, and the target damage rate is reduced; the packaging box can be repeatedly detached and mounted multiple times and is convenient to carry and flexible to use; and the bearing capacity is high, the packaging box can be laminated in multiple layers, and the storage space of a target is saved.

The invention discloses an anti-deformation cutting device of a metal hose. The rotation speed of a cutter body is 0.5N times of the rotation speed of the metal hose, wherein N is a positive integer,and the cutter body only rotates one round; the two ends of the metal hose are placed into a cylindrical placing box with the middle part being hollow, the placing box is provided with four through holes, the through holes are in threaded connection with connection rods, the two ends of the connection rods are at outside of the through holes, the ends, in the placing box, of the connection rods are connected with connection plates, the connection plates on the four connection rods form a hollow cylinder, the connection rods rotate in the through holes to adjust the distance between the connection plates and the inner wall of the placing box, and the metal hose is fixed into the hollow cylinder composed of the four connection plates. The device can effectively relieve the stress when cutting the metal hose to prevent the metal hose from deforming in the cutting process, and thus the metal hose is more convenient to use for a long time.

The invention discloses an arc-shaped sloping roof contour plate construction structure and a construction method thereof, and belongs to the technical field of building construction. The arc-shaped sloping roof contour plate construction structure comprises an H-shaped steel beam, a contour plate assembly, a short L-shaped folded plate and a long L-shaped folded plate, the contour plate assemblyis arranged on the upper portion of the H-shaped steel beam, and the H-shaped steel beam and the contour plate assembly are connected through the short L-shaped folded plate and the long L-shaped folded plate; and the contour plate assembly comprises an obliquely-arranged contour steel plate, a plurality of sets of longitudinal truss ribs, a plurality of longitudinal bottom ribs and a bidirectional reinforcing mesh arranged on the upper portions of the longitudinal truss ribs. According to the arc-shaped sloping roof contour plate construction structure, the contour steel plate is tightly andfirmly fixed to the H-shaped steel beam in a slope environment, so that the construction safety is ensured; after a roof cast-in-place slab is poured, the contour steel plate and a concrete structureare stressed to work together, and the consumption of concrete between the steel beam can be reduced; and finally, the purposes of using the concrete as a cast-in-place slab bottom mold in the slope environment, shortening the construction period, reducing the construction cost and increasing the benefits are achieved.

The invention discloses an automatic splicing and positioning carrier for frames. The automatic splicing and positioning carrier for frames comprises a carrying plate, wherein a plurality of splicing and positioning mechanisms are arranged on the carrying plate; each splicing and positioning mechanism comprises a pressing mechanism and a pushing mechanism; the pressing mechanisms can press adjacent frame bars; the pushing mechanisms push the adjacent frame bars to be close to one another; each pressing mechanism comprises a pneumatic toggle clamp; a group of pressing plates are arranged at the front end of each pneumatic toggle clamp; the front ends of the pressing plates are separately connected with pressure head screws capable of pressing the frame bars from above; each pushing mechanism comprises a pushing cylinder, an outer limiting block and an inner limiting block; a push rod is arranged at the front end of each pushing cylinder; each outer limiting block is arranged at the front end of the corresponding push rod; and each pushing cylinder pushes the corresponding push rod so as to drive the corresponding outer limiting block to push the two corresponding adjacent frame bars, and each outer limiting block and the corresponding inner limiting block are clamed tightly to implement tight attachment of connection positions of the two corresponding adjacent frame bars. The frame bars only need to be placed at approximate positions, automatic positioning for splicing of the frames is realized, the operation difficulty is reduced, the production efficiency is improved, the degree of automation is high, splicing and positioning of frame bars with different sizes are realized, and the universality is high.

The invention discloses an industrial thin film wrapping device convenient to use. The industrial thin film wrapping device convenient to use comprises a fixing seat, wherein a first fixing block is fixedly connected to the right side of the upper surface of the fixing seat; a first fixing plate is fixedly hinged to the top end of the first fixing block through a first pin shaft; a first bearing is fixedly inlaid to the upper part of the left side surface of the first fixing plate; and a first threaded rod is fixedly connected to an inner ring of the first bearing. According to the industrialthin film wrapping device convenient to use, the first pin shaft is arranged, and the first fixing block is cooperatively used, so that the first fixing plate can be effectively rotated; an electric push rod is arranged, and a second fixing block, a second pin shaft, a third fixing block and a third pin shaft are cooperatively used, so that the first fixing plate can be effectively rotated, and the position of the first threaded rod is further controlled; and a second bearing is arranged, so that the stability of an output end of a motor can be effectively maintained, and the output end of themotor is prevented from oscillating randomly during a rotating process.

The invention belongs to the technical field of conveying devices, and provides a conveying device for engine production. A conveying belt, a turning device and an overturning mechanism are included.The conveying belt comprises a first conveying belt body and a second conveying belt body which are vertically arranged. The turning device comprises a power piece and a rotation disc. The rotation disc is fixedly connected with the output end of the power piece. The overturning mechanism comprises a fixing base, an overturning rod and a bottom plate. The bottom plate is provided with fixing tongs. The two ends of the overturning rod are movably connected with the fixing base and the bottom plate correspondingly. Two moving devices are arranged and each comprises a drive piece, a screw and a movable block. The movable blocks are movably connected with the bottom plate. Each drive piece comprises a drive wheel, a driven wheel and a rotation chain, wherein the rotation chain is in cup jointwith the drive wheel and the driven wheel, and the driven wheel is fixedly connected with the corresponding screw. Thus, the conveying device can effectively achieve engine conveying, the occupied area of the conveying device is reduced, meanwhile, overturning in the engine conveying process can be effectively achieved, and the assembling efficiency is improved.

The invention discloses a geological mineral exploration device for layered storage of ore beds with different depths, and relates to the technical field of mineral exploration devices. The device includes a base, the base is connected with a rotating shaft assembly, the side wall of the rotating shaft assembly is rotationally connected with a conversion plate, the two opposite sides of the conversion plate are both fixedly connected with supporting plates, two oppositely-arranged U-shaped frames are arranged between the two supporting plates, the U-shaped frames are fixedly connected with the conversion plate, one U-shaped frame is connected with a drilling assembly, and the other U-shaped frame is connected with a sampling assembly. The drilling assembly and the sampling assembly are oppositely arranged, the sampling assembly comprises a lifting mechanism and a sampling mechanism, the side walls, away from each other, of the two supporting plates are connected with locking assemblies, and the base is connected with a positioning assembly; therefore, transverse sampling can be carried out on different ore beds of an exploration hole, extracted samples can be independently stored, the sample extraction precision is effectively improved, meanwhile, repeated sampling of workers in different times and groups is avoided, waste of manpower resources is reduced, and the sampling efficiency is improved.

The invention relates to the field of data lines, in particular to a high-tension-bearing data line which comprises a power end connector and a data end connector, the power end connector and the data end connector each comprise a chip, an inner mold layer and an outer mold layer, and the inner mold layers are made of ABS / PC / TPV composite materials; and the ABS / PC / TPV composite material is prepared from the following raw materials: ABS, PC, TPV, a lubricant, a functional auxiliary agent and a compatilizer. The prepared data line is not easy to break when being bent and stretched, can bear large tensile force, has good weather resistance, wear resistance and aging resistance, and is long in service life.

The invention discloses a lamp holder. The lamp holder comprises a lamp holder main body in the shape of a rotary shell, a binding post fixedly connected with the bottom wall of the lamp holder main body, and a fastener, wherein the fastener comprises an elongated fastener main body; one end of the fastener main body in the length direction is fixedly connected with the inner side wall of the bottom wall of the lamp holder main body; the other end of the fastener main body is provided with a bent hook shaped embossment; an annular boss is formed on the inner wall of the side wall of the lamp holder main body; at least one fastening slot is formed on the boss; and the length of the fastener is greater than a distance from the boss to the bottom wall of the lamp holder main body. The lamp holder can be fixedly connected with the heat dissipater and a lampshade effectively, so that the installation precision is improved, and the lamp holder is convenient to install; moreover, as the lampholder are connected with the heat dissipater and the lampshade tightly and stably, dusts can be prevented from entering an LED tube lamp, and the light emitting efficiency and the service life of the LED tube lamp can be guaranteed. The invention also discloses an LED tube lamp arranged on the lamp holder.

The invention discloses a quick positioning and connecting structure for steel plate shear walls in a fabricated building, and relates to the technical field of building construction. The problem thatpenetration welding between steel plate wall joints can not be achieved due to the fact that the shear walls cannot be quickly positioned and the fixing effect is poor is mainly solved. The quick positioning and connecting structure for the steel plate shear walls in the fabricated building comprises positioning pins, angle steel and the shear walls. The shear walls are steel plate lightweight sandwich concrete shear walls. The four shear walls represent the relationship between the top, bottom, left and right, linings are arranged at connecting positions of every two shear walls, the thickness of each strip-shaped connecting steel plate is the same as the thickness of each steel plate shear wall, and the width is the same as the length of each connecting angle steel; the angle steel is in the shape of an isosceles triangle, and the angle steel is fixedly connected to the shear walls by the positioning pins, and the positioning pins are revolving positioning and locking bolts. The quick positioning and connecting structure is more convenient to assemble through the structure, the work efficiency is higher, labor and material costs are lower, and the utilization rate of labor and machinery is very high.

The invention discloses a wire embedding device convenient for fixing an assembly type wire embedding pipe, thewire embedding device comprises a wire box, a clamping ring and a wire embedding pipe, and is characterized in that the clamping ring is inserted into the center of one side of the wire box, the wire embedding pipe is inserted into the inner side of one end, far away from the wire box, ofthe clamping ring, and a clamping groove in the clamping ring is connected with a clamping plug ring; and a positioning rib plate is integrally formed on the other symmetrical side surface of the wire embedding box. Due to the arrangement of fixing strips, splicing blocks, connecting rack plates, pipe clamping rings, clamping and fixing insertion rods, insertion rod holes and rack plate holes, when the wire embedding device facilitating fixation of the assembly type wire embedding pipes is used, the wire embedding pipes are effectively and fixedly connected through the pipe clamping rings, the clamping and fixing insertion rods, the rack plate holes of the splicing blocks and the connecting rack plates; thus, the wire embedding pipes can be well connected into a whole, and the fixing effect of the wire embedding pipes is guaranteed.

The invention discloses an exhaust gas filtration device. The device includes a filter device for purifying air, and a blow-off device for blowing exhaust gas into the filter device; the blow-off device is an air blower, the filter device includes a shell, a dust filter plate, an activated carbon filter screen and an efficient filter, an air inlet pipe is arranged on the shell, an air outlet is formed in the shell, the air inlet pipe and the shell are integrally arranged, an exhaust pipe is arranged on the air outlet and is in a funnel shape, the exhaust pipe is welded with the air outlet, theair blower is connected with a ventilating pipe, one end of the ventilating pipe is connected with the air inlet pipe through bolts, the other end of the ventilating pipe is connected with the air outlet of the air blower through bolts, the dust filter plate, the activated carbon filter screen and the efficient filter are all located in the shell, the dust filter plate is located below the activated carbon filter screen, and the dust filter plate, the activated carbon filter screen and the efficient filter are all connected with the inner wall of the shell through bolts. The exhaust gas filtration device can effectively filter the exhaust gas.

The invention provides a freezing process hole protecting special-shaped pile forming method. The method mainly comprises the following steps: 1) manufacturing a prefabricated reinforced concrete pile tip, wherein a steel member is embedded in the pile tip and the diameter of the top surface of the pile tip is equal to the diameter of a special-shaped pile casing; 2) manufacturing a special-shaped pile mold, wherein a reversely arched curved plate is welded with a center spacer to form the special-shaped pile casing; a triangular freezing pipe is welded with the center spacer and a circular freezing pipe is welded in the center of a reversely arched curved surface of the reversely arched curved plate; a liquid supply pipe stretches into the triangular freezing pipe and is welded with the bottom of the triangular freezing pipe; 3) arranging a special-shaped pile driving machine in place, connecting the special-shaped pile mold with the prefabricated reinforced concrete pile tip and driving the special-shaped pile mold and the prefabricated reinforced concrete pile tip into a foundation; 4) filling liquid nitrogen into the liquid supply pipe and the circular freezing pipe to freeze surrounding soil by heat absorption through evaporation of the liquid nitrogen. The freezing process hole protecting special-shaped pile forming method has the advantages that the section area of the pile body is small and the side surface area of the pile is large; by using the liquid nitrogen to freeze the high-water-content and high-viscosity soil around the pile, the soil is solidified and formed, the squeezing force to the pile body is reduced and the quality of the pile body is guaranteed.

The invention discloses a steel-concrete bridge body and an assembling construction process thereof. The beam body is a composite beam formed by longitudinally connecting a plurality of prefabricatedsegmental box girders; each segmental box girder comprises a concrete top plate, a concrete bottom plate, a vertically-arranged middle web plate and a pair of side web plates. The middle web plates and the side web plates are corrugated steel web plates; temporary matching pieces are fixed to the side edges of the corrugated steel web plates. After the temporary matching pieces corresponding to the adjacent corrugated steel web plates are mutually connected, the side edges of the corresponding corrugated steel web plates are mutually matched and attached; the side web plates incline by a certain angle so as to form an inverted trapezoidal structure with the concrete top plates and the concrete bottom plates, and flange cantilevers horizontally extending out of the inverted trapezoidal structure are arranged on the two transverse sides of the concrete top plates. Accurate positioning between the box girders can be achieved only through connection between the temporary matching pieces, then the assembling effect between the box girders is guaranteed, the positioning efficiency is greatly improved, and meanwhile the positioning reliability can be guaranteed.

The invention aims at the problem of poor hydrophilicity and thermal stability of the polypropylene lithium-ion battery separator, and improves its hydrophilicity and thermal stability through the method of self-assembly of polyelectrolytes on the surface of the separator layer by layer. The technical solution is to prepare anionic and cationic polyelectrolytes containing anionic and cationic structural units respectively through aqueous solution polymerization, and repeatedly soak the pretreated polypropylene separator in the two polyelectrolyte solutions alternately, so that the polymer polyelectrolyte can Self-assembled to the surface of polypropylene separator under the action of electrostatic force. The polypropylene lithium-ion battery separator prepared using this method has high hydrophilicity and thermal stability, with a static water contact angle as low as about 30°, and its thermal shrinkage rate can reach only about 15% after being treated at 130°C for 4 hours. This method is easy to operate and highly practical, overcomes the shortcomings of chemical modification and general coating methods, and can be industrialized.

The invention discloses a special shoe rack for an electronic equipment manufacturing factory. The special shoe rack comprises a supporting column, wherein the lower end of the supporting column is provided with an insertion groove, a first supporting shoe board with a first vamp is inserted into the insertion groove, the first supporting shoe board is provided with a mud collecting portion which is concave in the first supporting shoe board, the supporting column is vertically provided with a plurality of installation holes in an array mode, an adjusting shaft is installed in the installation holes in a rotating mode, the adjusting shaft is provided with a second supporting shoe board which is integrated with the adjusting shaft and provided with a second vamp, the end, close to the adjusting shaft, on the second vamp is provided with a baffle for preventing a shoe from sliding, the end, close to the second vamp, on the baffle is provided with a plurality of mud outlets, a mud leaking portion is arranged between the baffle and the adjusting shaft, the mud leaking portion corresponds to the mud collecting portion in the longitudinal direction, and the first vamp and the second vamp are provided with anti-slip stripes. The special shoe rack is simple in structure, low in manufacturing cost, little in occupied space and adjustable; meanwhile, mud falling from the shoe does not need to be swept specially, a good cleaning effect can be maintained, and other people can use the shoe normally.

The invention provides a special anti-theft stainless steel corrugated hose for gas meters, which includes a corrugated pipe body, a six-point outer wire, a gas meter inner wire joint, an anti-theft aluminum shell and a retaining ring, and the six-point outer wire is arranged at the left end of the bellows body , the right side of the bellows body is connected with a gas meter inner wire joint, the outer surface of the gas meter inner wire joint is covered with an anti-theft aluminum shell and a retaining ring, and the outer surface of the gas meter inner wire joint is provided with elastic protrusions, The inner surface of the anti-theft aluminum shell has an inner cavity, and the elastic protrusion matches the inner cavity. The invention also provides an installation method for an anti-theft stainless steel corrugated hose dedicated to gas meters. Compared with the prior art , the present invention has the following beneficial effects: the bellows of the gas meter and the gas meter can be effectively and fixedly connected, and the installation is simple, fast, safe, and the anti-theft effect is good, preventing the user from removing the gas meter from the pipeline, and then directly winding the gas in the pipeline Through the gas meter, the situation of stealing gas directly connected to the gas stove occurs.

The invention provides a new type of electromagnetic shielding structure under the strong electromagnetic environment of a giant hydro-generator, which includes multi-layer silicon steel sheets and a layer of aluminum plates that are stacked and laminated in parallel; the multi-layer silicon steel sheets and a layer of aluminum plates are sequentially stacked and fixedly connected An integrated shielding structure is formed; multiple channel steels are evenly arranged on the surface of the machine pit wall opposite to the copper bar, and the shielding structure is arranged parallel to the machine pit wall and fixedly connected with the channel steel; the silicon steel sheet is close to the machine pit wall, and the aluminum plate is close to the Copper row; silicon steel sheet builds an ultra-high magnetic permeability path within the space of the leakage magnetic field, changing the distribution of the spatial magnetic field, so that the magnetic flux leakage that intentionally enters the steel bar enters the silicon steel sheet; the magnetic field line passes through the aluminum plate vertically and enters the silicon steel sheet. Induced current, the induced current also generates reverse magnetic flux leakage, which offsets the magnetic flux leakage generated by the original copper bar. The invention is used to prevent the overheating of the reinforced concrete structure in the wall of the machine pit caused by the strong electromagnetic environment, and the reduction of the structural strength caused by the overheating.

The invention provides a fixing component, which relates to the technical field of flexible body structure design. The fixing assembly is used to fix the flexible shaft, including a clamping body and a clamping base; the outer peripheral surface of the clamping body is an arc surface, which can be sleeved in the shaft hole of the flexible shaft and can support the flexible shaft out of the bulge; the clamping base has a clamping hole, The hole wall of the clamping hole is matched with the outer peripheral surface of the clamping body and is used for clamping the drum bag. The fixing assembly can reduce or even avoid the occurrence of damage of the flexible shaft in the process of reciprocating bending deformation, not only realizes the effective fixed connection of the flexible shaft, but also ensures or even prolongs the service life of the flexible shaft.

The invention relates to a wire restraining device for an electric motor cycle. A whole connector body is in a U shape, a through hole is formed in the center of a closed end of the connector body, ascrew rod A is arranged in the through hole in a penetrating manner, a pressing plate which is in sliding fit with an inner cavity of the connector body is fixedly connected with the lower end of thescrew rod A, a return spring is arranged on the screw rod A in a sleeving mode, the upper end of the screw rod A is fixedly connected with a locking nut A, and a clamping hoop consists of a pair of arc-shaped clamping arms which are oppositely arranged; and two insertion holes which correspond to two extension arms of the connector body are longitudinally formed in a base body, a through-hole which penetrates through the insertion holes is formed in the transverse direction, positioning holes, corresponding to the through-hole, are formed in the lower ends of the two extension arms of the connector body, a screw rod B penetrates into the through-hole from one end of the base body and penetrates out of the other end of the base body after penetrating through each positioning hole in sequence, and then the screw rod B is connected with a locking nut B. The device can effectively restrain a scattered wire harness, can facilitate identification during maintenance, and can ensure the safetyin the running process of the electric motor cycle.

The invention discloses a three-phase independent time relay. The time relay comprises a fixed base; a connecting groove is connected in the middle of one side of the fixed base; a linkage shaft is respectively connected to the middle of side plates at two sides away from the connecting groove; control plates are respectively connected to one end, away from the side plates of the connecting groove, of the linkage groove and on two sides of the connecting groove away from each other; clamp plates are disposed on two opposite sides of the connecting groove; fixed plate are disposed on inner sides of the other pair of side plates in the connecting groove; joint plates are fixedly connected to four corners, away from each other, of the fixed base; set screws are connected to the joint plates;and a threaded column is connected to the middle of one sides, close to the side plates of the connecting groove, of the clamp plates. The three-phase independent time relay has the beneficial effectsthat by disposing the clamp plates, the threaded column, the linkage shafts and the control plates, the relay can be fixedly connected through the abovementioned components when being connected intothe connecting grooves; by disposing the fixed plate and a fixed spring, the relay can be reinforced on the basis of the clamp plates; and through double fixing, the relay can be effectively and fixedly connected into the connecting groove.

The invention relates to the field of crawler-type armors, and discloses a comprehensive transmission device sensor cable detection device which comprises a rubber sleeve and a moving end, a first clamping block and a second clamping block which can be combined together are arranged in the rubber sleeve, and the first clamping block and the second clamping block are both in a semicircular pipe shape. The first clamping block and the second clamping block can be combined into a complete round pipe when being attached together, micro-current detection devices are fixedly installed on the inner walls of the first clamping block and the second clamping block, cavities are formed in the first clamping block and the second clamping block, temperature detection devices are fixedly installed in the cavities, and the temperature detection devices are connected with the first clamping block and the second clamping block. A detection probe is fixedly installed on the temperature detection device, and one end of the detection probe penetrates through the cavity and extends to the outer side.

The invention discloses an emergency power supply quick access connector based on power distribution network power interruption caused by natural disasters. The emergency power supply quick access connector comprises an emergency power supply, a female seat is arranged in the middle of the outer side face of the emergency power supply, a bus is transversely inserted in the middle of the female seat, the outer side of the surface of the female seat is sleeved with a double-thread cylinder, and the surface of the double-thread cylinder is sleeved with a trapezoidal ring; a male head seat is arranged on the right side of the double-thread cylinder, a male wire is transversely inserted in the middle of the male head seat, the left end of the male wire is electrically connected with the right end of the bus through an insertion assembly, the left side of the outer surface of the male head seat is sleeved with a channel steel ring, the channel steel ring is connected with the double-thread cylinder through a sealing assembly, a clamping mechanism is arranged in the middle of the outer surface of the male head seat, and the clamping mechanism is in clamping connection with the trapezoidal ring. Through cooperative use of all the mechanism assemblies, the problems that the male and female heads of the emergency power supply are not tightly sealed and not firmly inserted are solved, the overall structural design is compact, the sealing performance of the connecting position of the male and female heads is improved, and the phenomenon that the male and female heads are not firmly inserted is avoided.

The invention provides a sputtering target packaging box, which comprises an enclosed box, a protection body positioned in an accommodating space, a bottom plate and a cover plate, wherein the enclosed box comprises side plates which are connected end to end and are integrally molded; the accommodating space is defined by the side plates; two sides of the protection body are supported on the side plates; the bottom plate is arranged on the protection body and is positioned in the enclosed box; the cover plate is arranged on the top of the enclosed box and has a shape of a frame; each frame of the cover plate is provided with a locking hole or a buckle; and the side plates are correspondingly provided with buckles or locking holes which are matched with the locking holes or the buckles of the cover plate. The sputtering target packaging box does not deform due to external force, and the target damage rate is reduced; the packaging box can be repeatedly detached and mounted multiple times and is convenient to carry and flexible to use; and the bearing capacity is high, the packaging box can be laminated in multiple layers, and the storage space of a target is saved.

The invention provides a pipeline sliding device and a multi-layer pipe gallery pipeline sliding installation method, and relates to the technical field of pipeline installation. The pipeline sliding device and the multi-layer pipe gallery pipeline sliding installation method aim to solve the technical problems that in the prior art, construction is inconvenient, and efficiency is low, the device comprises a base, rollers and fasteners, wherein the base is mounted on a pipe gallery cross beam, the base comprises a fixed end and a movable end which are hinged to each other; the rollers are fixedly connected to the base through a support; and the fasteners are connected to the base and are used for fastening the base and the pipe gallery cross beam. The pipeline sliding device and the multi-layer pipe gallery pipeline sliding installation method have the beneficial effects that rapid mounting and dismounting can be achieved under the condition that a main body structure is not damaged, and meanwhile the phenomenon that fixing is not firm in a traditional construction technology can be effectively avoided.

The invention relates to the technical field of constructional engineering, and discloses a constructional engineering formwork rapid fixing device which comprises a pair of formworks, adjusting mechanisms and hinge pieces, U-shaped plates are arranged at the four corners of the outer side face of each formwork, L-shaped plates are arranged on the outer side face of each U-shaped plate, and every two adjacent L-shaped plates are connected through the corresponding adjusting mechanism; a square plate is arranged in the middle of the outer side face of each formwork, and each square plate is connected with the corresponding L-shaped plate through a hinge piece. Through cooperative use of all the mechanisms, the problem that a vertical formwork is inconvenient to adjust is solved, the overall structural design is compact, and on the premise that safety is guaranteed, adjustment of the vertical formwork is completed in a time-saving and labor-saving mode, so that erecting and fixing of the formwork are rapidly completed.

The invention provides a freezing process hole protecting special-shaped pile forming method. The method mainly comprises the following steps: 1) manufacturing a prefabricated reinforced concrete pile tip, wherein a steel member is embedded in the pile tip and the diameter of the top surface of the pile tip is equal to the diameter of a special-shaped pile casing; 2) manufacturing a special-shaped pile mold, wherein a reversely arched curved plate is welded with a center spacer to form the special-shaped pile casing; a triangular freezing pipe is welded with the center spacer and a circular freezing pipe is welded in the center of a reversely arched curved surface of the reversely arched curved plate; a liquid supply pipe stretches into the triangular freezing pipe and is welded with the bottom of the triangular freezing pipe; 3) arranging a special-shaped pile driving machine in place, connecting the special-shaped pile mold with the prefabricated reinforced concrete pile tip and driving the special-shaped pile mold and the prefabricated reinforced concrete pile tip into a foundation; 4) filling liquid nitrogen into the liquid supply pipe and the circular freezing pipe to freeze surrounding soil by heat absorption through evaporation of the liquid nitrogen. The freezing process hole protecting special-shaped pile forming method has the advantages that the section area of the pile body is small and the side surface area of the pile is large; by using the liquid nitrogen to freeze the high-water-content and high-viscosity soil around the pile, the soil is solidified and formed, the squeezing force to the pile body is reduced and the quality of the pile body is guaranteed.