38results about How to "Easy to connect and install" patented technology

The invention discloses a ground control method for underground sliding sleeves. The ground control method comprises the steps as follows: a ground electromagnetic wave emitting device generates command information for controlling opening or closing of a plurality of underground sliding sleeves according to input control commands, and the command information is sent to the underground sliding sleeves after amplification; an electromagnetic wave receiving device arranged in each underground sliding sleeve receives the command information sent from the ground, and the command information is compared with respective pre-assigned control commands; if the command information is not consistent with the assigned control commands of the underground sliding sleeves, the underground sliding sleeves which are not consistent with the command information do not act and continuously wait for next ground command information; and if the command information is consistent with the assigned control command of one underground sliding sleeve, the underground sliding sleeve acts and finishes opening or closing operation required by the command information. According to the ground control method for the underground sliding sleeves, opening and closing actions of the underground sliding sleeves can be remotely controlled by the ground electromagnetic wave signals and can be controlled in real time, and further, ball pitching is not required.

The invention is a flared pipe fitting for connecting plastic coiled structured wall pipes, comprising: straight pipe segment, flared segment and socket segment connected into a whole, where the diameter of the straight pipe segment is adapted to that of the connected pipe, the inner diameter of the socket segment is greater than the outer diameter of the connected pipe, and the making method of the flaring pipe fitting: using the plastic for making plastic coiled structured wall pipe as raw material, and adopting cast moulding method to make it. And its use method comprise: fusion-welding it with thermal shrinking belt or electric fusion belt for plastic coiled structured wall pipe to compose a plastic coiled structured wall socket pipe, and implementing socket connection between it and another one in construction. In use, it reduces the risk of seepage happening after pipe connection and installation.

The invention belongs to the technical field of drain pipes, and particularly relates to a throttling type bell-spigot no-pad connecting pipe material. A bellmouth is formed at one end of the pipe material; a spigot capable of being connected with the bellmouth in a plugging manner is formed at the other end of the pipe material; an annular flange is arranged on the spigot; the spigot is connected with the bellmouth in a plugging manner; or independent annular rings are arranged on an internal wall of the bellmouth; and the spigot is connected in the bellmouth in a plugging manner. According to the pipe material, the spigot and the bellmouth at the two ends of the pipe material are connected in a plugging manner, so that no sealing ring, gasket or washer is required; the connecting and the mounting are quick and convenient without third party equipment, so that the mounting cost is lowered, and the working efficiency is improved; and the pipe material is suitable for various PE (Polyethylene) drain pipes, PVC (Polyvinyl Chloride) drain pipes, PP (Polypropylene) drain pipes and the like.

The invention relates to a composite aluminum foil, which comprises a first aluminum foil layer, a second aluminum foil layer and a plastic reinforcing layer, wherein the first aluminum foil layer, the plastic reinforcing layer and the second aluminum foil layer are sequentially arranged, the adjacent layers are respectively compounded together by glue, the surface of the second aluminum foil layer is compounded with an adhering layer, the adhering layer is a polyester adhering thin film, the polyester is grafted and modified with maleic anhydride, and the adhering layer is compounded with the second aluminum foil layer together by glue. The composite aluminum foil has the advantages that the common problem of design and manufacturing technique of a coaxial cable is solved, the quality stability and the suitability of the cable are improved, and the social benefits are obvious; the adhering performance of the cable product is improved, the cost is low, and the process property is favorably prompted to be further improved; and the technique of the composite aluminum foil plays a leading role in the industry and has a great promoting function for market broadening and brand promotion.

The invention relates to the field of concrete buildings, in particular to a combined type foam concrete formwork. The combined type foam concrete formwork comprises a base plate, a frame and a bottom frame, the base plate is arranged on the bottom frame, the frame is arranged on the base plate, the four sides of the frame are fixedly connected through limiting blocks, two opposite sides of the bottom frame and two opposite sides of the frame are all outwards extended, and the extending ends of the bottom frame and the extending ends of the frame are in fastened connection through pressing devices. According to the combined type foam concrete formwork, the frame is fixedly connected through the limiting blocks, the extending ends of the bottom frame are in fastened connection with the extending ends of the frame through the pressing devices, the base plate is tightly clamped between the bottom frame and the frame, it is guaranteed that aggregate-free foam concrete can not be outwards leaked all around, meanwhile, the size of the formwork is limited through the limiting blocks, and due to the fact that the pressing devices are arranged in a detachable connection mode, connecting and installation are conveniently and rapidly carried out, and the combined type foam concrete formwork can be repeatedly used.

The invention discloses an overlap-connecting structure of an escalator truss. The structure comprises a first split truss and a second split truss. The first split truss comprises two first side edges, and the two first side edges are arranged on the upper side and the lower side of the first split truss respectively. The second split truss comprises two second side edges, and the two second side edges are arranged on the upper side and the lower side of the second split truss respectively. The first side edges are provided with first fixed reinforcing plates, and the first fixed reinforcing plates are placed on the outer sides of the first side edges. The second side edges corresponding to the first side edges are provided with second fixed reinforcing plates, and the second fixed reinforcing plates are placed on the outer sides of the second side edges. The first fixed reinforcing plates and the second fixed reinforcing plates are fixedly connected through connecting plates. According to the overlap-connecting structure, using space can be saved, overlap-connecting installation of the split trusses is made to be easier, and cost can be better lowered.

The invention provides a light barrier for a movable light barrier switching device. The light barrier for the movable light barrier switching device comprises a light barrier body (1). The light barrier body (1) is an integrally-formed piece. Mounting feet (2) connected with electromagnetic valve components are arranged under the two ends of the light barrier body (1). Counter bores (3) are formed in the two ends of the light barrier body (1). Rubber pads (4) are fixedly mounted in the counter bores (3). The shape of the edge (5) of the upper portion of the light barrier body (1) is the same as the shape of a lower beam cut-off line, and a boss (6) is arranged at the left side of a turning point (51) of the edge (5). According to the light barrier for the movable light barrier switching device, collision or abrasion between the light barrier and a support is prevented through the rubber pads in the moving process, and thus the service life of the light barrier is greatly prolonged; light at a 50 L measuring point for a lower beam is shielded through the boss, and thus the situation that the standard requirement cannot be met due to the fact that the illuminance value of the 50 L measuring point is too high is prevented.

The invention relates to a floor slab for a kitchen/bathroom. The floor slab comprises a steel frame and kitchen/bathroom concrete ground, wherein the kitchen/bathroom concrete ground is located on the steel frame, the steel frame and a steel mesh in the kitchen/bathroom concrete ground are integrally welded, concrete is poured, the kitchen/bathroom concrete ground is internally provided with lifting seats which are used for lifting and are arranged in a supporting way in a prefabricating way, and the edge of the kitchen/bathroom concrete ground is provided with a horizontal reinforcing bar which is used for connecting. The floor slab for the kitchen/bathroom, disclosed by the invention, integrates the advantages of a concrete floor slab and a steel-structure floor slab and has the advantages that the cost is lower, the lifting installation is convenient, the construction speed is fast, materials are saved, standardized mass production in a factory can be realized, and the floor slab can be assembled at random.

The invention discloses a waste tire rubber reinforcing and recycling method and device, and relates to the technical field of rubber recycling. The device comprises a treatment box, a feeding hopperand a discharging chamber; an observation window is arranged in the middle part of the treatment box, fixed outer frames are arranged on the outer sides of the upper portion and the lower portion of the treatment box, and supporting columns are welded to the two sides of the fixed outer frames; the feeding hopper is arranged at the upper portion of the treatment box, and a mounting plate is fixedto the outer side of the lower portion of the feeding hopper; a discharging port is formed in the lower portion of the treatment box, a first material crushing mechanism is arranged on the upper middle portion inside the treatment box, and a second material crushing mechanism is arranged on the lower middle portion inside the treatment box; and the discharging chamber is fixed to the lower portionof the discharging port. The waste tire rubber reinforcing and recycling method and device have the beneficial effects that waste tire rubber can be conveniently recycled and crushed through the arrangement of the treatment box of the device, and the feeding hopper communicates with the interior of the treatment box so that the waste tire rubber can be conveniently fed into the treatment box through the feeding hopper.

The invention discloses an auxiliary connecting structure for a lift car wall and a lift car bottom of an elevator, wherein a support plate is fixedly connected onto the lift car bottom and comprises a support part and a blocking part positioned outside the lift car bottom, an upwards open gap is formed between the blocking part and the lift car bottom, the lower end part of the lift car wall is downwards inserted into the gap and is supported by the support part, and the blocking part is blocked outside the lower end part of the lift car wall. The lift car wall is supported through the support part, and the blocking part blocks the lift car wall, so workers can connect the lift car wall with the lift car bottom through screw bolts and screw nuts only through slightly holding the lift carwall during the installation instead of supporting the lift car wall by force, the fixed installation between the lift car wall and the lift car bottom is completed, the labor is saved during the connection installation operation of the lift car wall and the lift car bottom through the auxiliary connecting structure, and the installation efficiency is high.

The invention relates to the field of liquid crystal display screens, and particularly discloses a combined liquid crystal display screen convenient to disassemble and assemble. The connection limiting assembly is connected with the base; the adjusting device is connected with the connecting limiting assembly; the adjusting device comprises a transmission assembly, a connecting limiting assembly, a first adjusting assembly and a second adjusting assembly, the linkage assembly is rotationally connected with the transmission assembly and used for being matched with the transmission assembly to complete movement adjustment of the display screen; according to the device, linkage adjustment of the multiple sets of display screen bodies can be achieved through cooperation of the transmission assembly and the linkage assembly, so that combined display among the multiple screen sets is completed, the display range is further expanded, connection and installation are convenient and fast, storage is convenient, and the display effect is good. And meanwhile, the device is provided with a connecting limiting assembly, and the adjusting stability is further improved.

The invention discloses a wire connector. The wire connector comprises connector bodies, locking blocks arranged on the connector bodies, and locking devices for detachable connection with the connector bodies and the locking blocks. One surface of each connector body is provided with a concave-convex pressing line structure, correspondingly, one surface of each locking block is provided with a matched concave-convex pressing line structure, and at least one from each connector body and each locking block is provided with a limiting structure for preventing wires from transversely slipping off. The wire connector provided by the invention has the advantages of simple structure, good wire clamping effect, excellent tension bearing capability, good electrical property, convenient connection installation, flexible dismounting, high versatility, capability of self-locking, convenient unlocking and safe and stable connection.

The invention relates to the field of heat exchangers, in particular to a micro-channel heat exchanger. The micro-channel heat exchanger comprises a body internally provided a plurality of heat exchange units, each heat exchange unit comprises a first flow channel and a second flow channel which are coaxially arranged in a sleeved manner and are independent of each other, the two ends of the firstflow channel in each of the multiple heat exchange units are connected to two first volume chambers, the two ends of the second flow channel in each of the multiple heat exchange units are connectedto two second volume chambers, the first volume chambers and the second volume chambers are arranged in the body and are independent of each other. The micro-channel heat exchanger is easy to processand has the better heat exchange effect.

The invention discloses connection method and device of a double-cylinder back-pull type hydraulic machine and an arc door. According to the device, a double-cylinder back-pull type hydraulic machineand an arc door are involved, a connecting device is additionally arranged between a lifting head of the double-cylinder back-pull type hydraulic machine and a side beam of the arc door, the side beamis of a double-web structure, an end plate is welded to the end part of the double-web structure, arc door lifting lug plates are symmetrically welded to the two sides of the double-web structure, the connecting device is composed of double connecting plates and pin shafts, the front ends of the double connecting plates are connected with the arc door lifting lug plates through the pin shaft respectively, and the rear ends of the double connecting plates are rotationally connected with the lifting head of the double-cylinder back-pull type hydraulic machine through the pin shaft. According tothe method and the device, the connecting device is additionally arranged between the lifting head of the double-cylinder back-pull type hydraulic machine and the side beam of the arc door, so that the connecting position of the hydraulic machine lifting head and the arc door is located at the open position behind an arc door leaf, the operation space is effectively increased, and the connectionand installation of the hydraulic machine lifting head and the arc door are facilitated.

The invention relates to the technical field of bridge jacking equipment, comprising an insert-type construction frame for support use, an adjustable hoop prestressed support platform, a shaped capping-beam-elevating formwork support system and transverse limiting devices. The insert-type construction frame for support use is fixed to an expanded cap and is connected via embedded anchor bolts; theinsert-type construction frame for support use is quickly connected via connection sleeves, vertical rods, transverse rods and oblique rods. The adjustable hoop prestressed support platform can be composed of two dual-concave grooves and can reduce construction quantity using a cap as a reaction platform. The shaped capping-beam-elevating formwork support system includes a side formwork, an end formwork and extension slotted forms, and is quickly connected via grooves and tongues as well as connection rods. The transverse limiting devices are arranged at the two ends of a deck and is each composed of a limiting truss, support blocks, a rail for sliding of the support blocks, a fixing plate, and a transverse limiting jack. When the deck shifts transversely, gradual fine correction is madevia the transverse limiting jacks.

The invention discloses a modified polypropylene and polyethylene composite pipe with high performance. The modified polypropylene and polyethylene composite pipe with high performance is three-layer structure composed of the polypropylene layer, metal frame layer and high density polyethylene nano-composite layer from the outer part to the inner part; the metal frame layer is the mesh frame structure formed by the high-tensile steel wire wound at the left and right sides in a spiral winding mode; further improvement is as follows, the high-tensile steel wire of the metal frame layer is the high-tensile copper plated steel wire; the thickness of the high density polyethylene nano-composite layer is 1.2 to 2.0 <mm>; the polypropylene layer is the polypropylene tube extruded by the modified polypropylene material; the high density polyethylene nano-composite layer is composed by adding the nano particles in the high density polyethylene. The modified polypropylene and polyethylene composite pipe with high performance is high in abrasion performance, long in service life, excellent in hot melt connection performance for conveniently connecting and mounting the pipeline and guaranteeing the pipe connection airtightness.

The invention discloses a building indoor artistic decoration heat preservation board. The building indoor artistic decoration heat preservation board comprises a decoration panel, a plurality of heatpreservation assemblies, first installation hinges, second installation hinges, installation vertical baffles, limiting insertion grooves and a fixing assembly, wherein a plurality of heat preservation assemblies are arranged on the end surface of the back part of the decoration panel, the first installation hinges are fixedly installed on the end faces of the two ends of the heat preservation assemblies correspondingly, the bottoms of the first installing hinges are fixedly connected with the decoration panel, the second installing hinges are fixedly installed on the end faces of the two sides of the heat preservation assemblies correspondingly, the bottoms of the second installing hinges are fixedly connected with the decoration panel, the installing vertical baffles are fixedly installed in the centers of the top end faces of the heat preservation assemblies, the limiting insertion grooves are formed in the centers of the end faces of the installing vertical baffles, and the fixingassembly is arranged on the tops of the installing vertical baffles. The building indoor artistic decoration heat preservation board is easy to install and convenient to splice, the structure is firm, sealing is tight, the better heat preservation effect is achieved, and heat dissipation is effectively reduced.

The invention discloses an injection mold stripper plate mounting structure. The injection mold stripper plate mounting structure comprises a bottom plate, a mounting plate, a female mold, a stripperplate and multiple sets of vertical plates, and is characterized in that the left side and the right side of the mounting plate are each correspondingly provided with a hydraulic cylinder, and the left side and the right side of the stripper plate are respectively arranged outside the left side and the right side below the mounting plate; the left side and the right side of the stripper plate areeach provided with a connecting groove, a connecting rod is arranged on an output shaft of each hydraulic cylinder, the output shaft of each hydraulic cylinder is inserted into the corresponding connecting groove through the corresponding connecting rod, and the stripper plate is driven to move up and down through stretching and retracting of the output shafts of the hydraulic cylinders; and two sets of travel switches are arranged on the side wall of one set of the vertical plates on the right side, a positioning mechanism is arranged at the right end of the stripper plate, and the positioning mechanism is arranged between the two sets of travel switches. According to the structure, the stripping stability and quality are improved.

The invention discloses a conveniently-installed hydraulic valve for an oil storage tank and relates to the technical field of hydraulic valves. The conveniently-installed hydraulic valve comprises amachine body, an upper valve body, a connecting mechanism and a lower valve body, wherein the upper valve body is fixedly arranged at the top of the machine body, the connecting mechanism is fixedly arranged at the top of the upper valve body, and the lower valve body is fixedly arranged at the bottom of the connecting mechanism. According to the conveniently-installed hydraulic valve for the oilstorage tank, by means of the arrangement of an upper easy-to-install base seat, the conveniently-installed hydraulic valve is effectively connected with the oil storage tank, and then an upper oil inlet is movably connected with an oil outlet of the oil storage tank through the actions of spring clamping columns and fixing clamping plates, and then a control rotary disc is controlled, the upper valve body is made to adsorb oil into a hydraulic cavity arranged inside the upper valve body through the action of an oil inlet passage, and then by means of the hydraulic effect of the conveniently-installed hydraulic valve, the oil is discharged out through an upper connecting piece or is transmitted to the lower valve body to be discharged through the action of the connecting mechanism, the conveniently-installed hydraulic valve is made to be convenient and fast to connect and install, installation and use of the conveniently-installed hydraulic valve are facilitated, the installing and assembling time of the conveniently-installed hydraulic valve is saved, the cost investment is reduced, and the practicability of the conveniently-installed hydraulic valve for the oil storage tank is effectively improved.

The invention relates to a water-swelling rubber ring which comprises a water-swelling rubber ring body, wherein a first check ring protruding outwards is arranged at one end of the water-swelling rubber ring body, and a second check ring protruding outwards is arranged in the middle of the water-swelling rubber ring body; the water-swelling rubber ring body is prepared from the following raw materials in parts by weight: 10 to 100 parts of natural rubber, 10 to 100 parts of chloroprene rubber, 10 to 80 parts of polyacrylamide, 20 to 60 parts of superfine calcium carbonate, 0.5 to 10 parts of dicumyl peroxide, 0.5 to 10 parts of magnesium oxide, 0.1 to 10 parts of an accelerant DETU, 0.5 to 10 parts of zinc oxide, 0.5 to 10 parts of stearic acid and 0.5 to 20 parts of chlorinated polyethylene. Compared with the prior art, the fatigue-resistant water-swelling rubber ring disclosed by the invention has the advantages of higher mechanical property, excellent water absorption swelling rate, excellent fatigue resistance, capability of repeatedly absorbing water and swelling for more than 25 times, good sealing property, no leakage. The rubber ring can be widely applied to complex environments such as various tunnels, underground and underwater engineering or environments where the rubber ring is inconvenient to replace frequently.

The invention discloses a hinged type wire connector. The hinged type wire connector comprises connector bodies, pressure blocks, and locking devices for detachable connection with the connector bodies and the pressure blocks. One surface of each connector body is provided with a concave-convex pressing line structure, correspondingly, one surface of each pressure block is provided with a matched concave-convex pressing line structure, and at least one from each connector body and each pressure block is provided with a limiting structure for preventing wires from transversely slipping off. The hinged wire connector provided by the invention is simple in structure, simple to operate, good in mechanical bearing capability, is detachable, can fasten the wire, is good in electrical performance and high in versatility and can realize safe and stable connection.

The invention discloses an anti-pulling environment-friendly oil gun capable of achieving self-hanging oil filling. The oil gun comprises an oil gun body, a brittle oil gun nozzle, a self-hanging hook, a switch handle and a blocking piece; the switch handle is installed in the oil gun body, and the self-hanging hook is installed at the upper end of an oil gun nozzle connector on the right end face of the oil gun body; and the self-hanging hook can be combined with or separated from the oil gun body, the brittle oil gun nozzle is installed on the right end face of the oil gun body and can be combined with or separated from the oil gun body, and the self-hanging hook and the brittle oil gun nozzle both comprise mechanisms capable of being connected with or separated from the oil gun body. The anti-pulling environment-friendly oil gun is simple in structure and convenient to use and maintain, the cost is saved, the oil gun can be automatically hung on an automobile oil tank opening during oil filling, and the oil gun cannot fall off from the oil tank opening in the oil filling process; and meanwhile, after oil filling is completed, if an automobile owner forgets to take down the oil gun and drives an automobile so as to pull the oil gun, an oil pipe and an oil filling machine, the oil gun nozzle made of a brittle material is broken under the pulling action of external force, so that the oil gun, the oil pipe and the oil filling machine are separated from the automobile, and accidents are further avoided; after the functions of the self-hanging hook and the brittle oil gun nozzle lose efficacy, the self-hanging hook and the brittle oil gun nozzle can be detached and replaced independently, the whole oil gun does not need to be replaced, and environmental protection is achieved.

The invention discloses a hydraulic torque converter. The hydraulic torque converter comprises a box body, a movement assembly, an oil insulating plate, an output shaft, a turbine shaft and a power take-off shaft. The movement assembly, the oil insulating plate and the box body are sequentially assembled in the axial length direction of the turbine shaft, the box body is formed by a large box bodyand a biasing small box body cast integrally, the oil insulating plate is located between the movement assembly and the large box body, and the power take-off shaft and the output shaft are assembledon one side of the biasing small box body and located on the two sides of the turbine shaft correspondingly. A matching adaptation technology in which the same torque converter is compatible with different rated rotating speeds can be achieved, and the requirements for the whole machine traction power performance at different rotating speeds can be met.

The invention discloses a unit type sulfur hexafluoride ring main unit, aiming at solving the safety problem in a utilization process of the ring main unit. The unit type sulfur hexafluoride ring main unit comprises a cabinet body, wherein the cabinet body is internally provided with a switching chamber; the switching chamber is internally provided with a sulfur hexafluoride switch and a sulfur hexafluoride density meter; a shell body of the sulfur hexafluoride switch is formed by pouring epoxy resin and is filled with sulfur hexafluoride gas; a cabinet door of the cabinet body is provided with an observation window and a safety interlocking device; a grounding switch is arranged at the lower part of the cabinet body; the grounding switch comprises an operation end and an interlocking shaft; a movable contact sleeves the interlocking shaft; the cabinet body is provided with a grounding end; the movable contact is fixed on the cabinet body through a spring; the grounding end is in contact with the movable contact. The unit type sulfur hexafluoride ring main unit is provided with a sulfur hexafluoride monitoring device and grounding is convenient and reliable so that the safety is greatly improved.

A detachable vibrator mount for a mobile phone comprises a base, a motor fixing block and a motor shaft mounting block, wherein the base comprises a substrate and a clamping block, the clamping blockis arranged below one end of the substrate, a fixing card slot is formed between the lateral side of the clamping block and the substrate, the width of the fixing card slot corresponds to the thickness of a main board, the base is fixedly installed on the main board by the fixing card slot, the motor fixing block is fixedly mounted on the upper surface of the substrate of the base, the motor is fixedly installed in the motor fixing block, the motor shaft mounting block is of a detachable split type, the motor shaft mounting block is parallel to the motor fixing block, the motor shaft can be rotatably and horizontally mounted on the motor shaft mounting block, and an eccentric wheel is fixedly sleeved on the motor shaft. By using the vibrator mount provided by the invention, the mobile communication device may obtain better vibration effects. As the motor is detachable, the invention is low in replacement and repair cost, simple in structure, good in connection strength, long in servicelife of the motor, and time-saving as well as labor-saving in installation.

The invention discloses a foldable flower pot. According to the technical scheme, the foldable flowerpot comprises an inner pot, a shell and supporting plates; the inner pot comprises an inner bottomplate, folding inner side plates which are respectively arranged on the left side and the right side of the inner bottom plate, and a front inner side plate and a rear inner side plate which are respectively arranged on the front side and the rear side of the inner bottom plate; the supporting plates comprise a supporting bottom plate and supporting side plates respectively arranged on two sides of the supporting bottom plate; the shell comprises an outer bottom plate, folding plates and folding lugs, wherein the two folding plates are symmetrically arranged on the left side and the right sideof the outer bottom plate, and the two folding lugs are symmetrically arranged on the left side and the right side of the outer bottom plate; each folding is rotationally connected with one corresponding folding plate; and the folding plates are rotationally connected with the outer bottom plate. According to the foldable flowerpot provided by the invention, the transportation effect can be improved, the transportation cost is reduced, the use is convenient, and the foldable flowerpot is convenient to carry by a user.

A double prestressed beam mainly comprises a prefabricated part and a cast-in-place part. Wherein the prefabricated part is manufactured in a factory and comprises profile steel, prestressed tendons, longitudinal bars, stirrups, shear bolts, H-shaped perforated steel plate connecting pieces and prefabricated concrete. In the manufacturing process, a vertical load is firstly applied to the profile steel to enable the profile steel to be bent and deformed to a certain degree, then prefabricated part concrete is poured and cured, when the concrete reaches certain strength, unloading is conducted, auxiliary profile steel is dismantled, and the profile steel on the lower portion contracts to apply first prestress to the concrete; however, deformation of the profile steel on the lower portion cannot be completely recovered due to constraint of the concrete, the profile steel still bends to a certain degree, at the moment, the prestressed tendons are tensioned to completely recover the deformation, and second prestress is applied to the concrete due to the action of the prestressed tendons. According to the method, the double prestressing force is applied to the concrete in sequence only by changing the construction process, and the cracking load and the durability in the use stage are greatly improved.

A plastic winding structure wall socket pipe comprises a plastic winding structure wall straight pipe section and a flaring pipe section connected to one end of the straight pipe section with a socket interface. The wall socket intubation pipe with plastic winding structure of the present invention makes the preparatory work and installation process of the pipe material installation simple and quick, and reduces the risk of leakage after the pipe material is connected and installed.

The invention discloses an electrical insulator for enhancing connectivity and a use method thereof. The device comprises an electric insulator, a connection reinforcing assembly, a multi-angle connecting assembly and an embedded fixing assembly, the surface of the electric insulator is connected with the connection reinforcing assembly, the surface of the electric insulator is connected with the multi-angle connecting assembly and the surface of the electric insulator is connected with the embedded fixing assembly, namely, one end of a rubber sheet is detachably connected with an upper rubber block, and the other end of the rubber sheet is detachably connected with a lower rubber block. The rubber blocks are connected and aligned with an external structure, the holes formed in the surfaces of the rubber blocks are aligned with the structure, the rubber sheets can be adjusted at different positions through the softness of the rubber sheets, and the non-uniformity of the external mounting structure can be conveniently adjusted; and the installation position of the rubber block can also be adjusted through the softness of the rubber block, and the whole insulator is fixed through the connection of structures such as holes and bolts, so that the insulator has high connectivity to the outside when in use, and is convenient to connect and install.

The invention provides an energy-saving and environment-friendly sewage filtering device for a water conservancy project. The energy-saving and environment-friendly sewage filtering device comprises mounting bases. Stand columns are welded to the tops of the four mounting bases, a bottom plate is welded to the interiors of the four stand columns, and a storage battery is fixedly mounted at the top of the bottom plate. An adsorption box is welded to the tops of the four stand columns, and four connecting pipes are symmetrically mounted at the top of the adsorption box through screws. A mounting plate is welded to the right side of the adsorption box, and sealing gaskets are arranged between the four connecting pipes and the adsorption box. A refined filtration box is welded to the tops of the four connecting pipes, and a connecting piece is fixedly mounted at the top of the refined filtration box through screws. A control box is fixedly installed at the front end of the refined filtration box through screws, and a sealing gasket is arranged between the connecting piece and the refined filtration box. When a water quality detector detects that the water quality does not reach the standard, sewage enters the refined filtration box again to be filtered again, and when the water quality detector detects that the water quality is qualified, the filtered water is discharged through a water discharging pipe, so that the pollution to the environment is reduced.