139results about How to "Overall good" patented technology

The invention discloses a latticed type precast prestressed underground diaphragm wall, comprising a precast wall body, wherein two rows of prestressing steel strands vertically pass through the inside of the precast wall body; the prestressing steel strands apply prestress after the concrete strength of a concrete wall body reaches over 80 percent, and the upper and lower end faces of the precast wall body are locked by prestressing anchorage device; two rows of the prestressing steel strands are connected at intervals through transverse structure reinforcing steel bars along the height direction; joint parts on two sides of the precast wall body are of a concave semicircular shape; a protective layer is concreted on the periphery of each prestressing steel strand; and a hollow through hole throughout the height direction of the wall body is arranged inside the precast wall body. The diaphragm wall is concreted and precast on the ground, which can well guarantee the shape, size and density of the wall body, ensures that the quality of the wall body cannot be affected by strata or slurry wall, and can thoroughly eradicate joint mud inclusion, wall body sand inclusion, reinforcing steel bar exposure, loosening, wall surface protuberance, water leakage, sand shifting and other quality qualitative common faults.

The invention relates to an MgO-Cr2O3 ramming material for a VOD (Vacuum Oxygen Decarburization) steel ladle safety liner. The MgO-Cr2O3 ramming material is characterized by comprising the following components in parts by weight: 50-100 parts of waste magnesium-chromium bricks, 0-50 parts of magnesite, 3-15 parts of clay or bentonite, and 0.5-10 parts of agglutinant, wherein the waste magnesium-chromium bricks and the magnesite are respectively processed into products with the granularity of 4-1mm and 1-0.74mm and being not more than 0.07mm, and the granularity composition comprises 45-55 parts of processed products of 4-1mm, 25-35 parts of the processed products of 1-0.074mm, and 15-25 parts of the processed products being not more than 0.074mm in parts by weight; and all the materials are mixed uniformly to obtain a finished product which has the chemical components that MgO being not smaller than 60% and CrO3 being not smaller than 4.0%. The ramming material disclosed by the invention has the advantages of lower preparation cost, simplicity for construction, good integrity, favorable performance, stable and reliable quality, no restrains from territorial temperature, territorial humidity and other conditions, and good application effect.

The invention discloses a novel seismic hardening constructional column of a masonry structure. The novel seismic hardening construction column comprises a primary-structure wall body, a steel plate, an angle steel, a split bolt and a steel tie, and is designed as follows: the steel plate and the split bolt are hooped with the wall body to form a combination constructional column at the exterior of the primary-structure wall body, and the steel tie is embedded between the combination constructional column and the peripheral wall body. The seismic hardening constructional column is provided with different shapes aiming at different parts, and can be in a linear shape, a L shape, a T shape and a crisscross shape; the steel plate or the angle iron is bonded on the surface of the construction column; and the split bolt pulls and ties the steel plate or the angle steel to form a firm integrated body with the column body. Compared with the traditional seismic hardening constructional column, the novel seismic hardening constructional column has the advantages of safety, practicability, simple structure, convenient construction, good integrity, strong shock resistance, short construction period, no damage on the wall body, no influence on appearance and the like.

Provided are a pre-fabricated building removable partition, a wall splicing structure, and a construction method. The pre-fabricated building removable partition comprises a wall main body, and a partition removable mechanism and a partition lifting mechanism added on the lower side of the wall main body. The wall main body comprises a cavity formed by a front panel, a rear panel, an upper blanking plate, a lower supporting plate, a right end plate, and a left end plate. A hollow threading lightgage steel joist and cavity filling foam are arranged in the cavity. The partition removable mechanism and the partition lifting mechanism are fixedly connected with the lower supporting plate. The lower sides of the front panel and the rear panel are respectively connected with a skirting board shielding the removable mechanism and the lifting mechanism. Gaps are filled with the cavity filling foam. The top end face of the wall main body is provided with a sealing band which is abutted against a room roof. The pre-fabricated removable partition can be produced and assembled in a factory, and is lifted and installed on an installation site, and the pre-fabricated removable partition has good dimension stability and good sound insulation, and satisfies variable requirement of people on living space. The pre-fabricated removable partition can greatly improve utilization rate of a building space, and promotes development of buildings.

The invention provides a three-dimensional laser scanner fixing mechanism, a subway tunnel acquisition system and method. The subway tunnel acquisition system includes a three-dimensional laser scanner fixing mechanism, a rail car module, a distance sensor, an RFID reader and a host computer; the three-dimensional laser scanner The point cloud data of the tunnel ring is collected continuously, the distance sensor collects the mileage data in real time and transmits it to the host computer, and the RFID reader returns the read and written RFID smart label signal to the host computer in real time, and the host computer The computer completes multi-source data fusion and storage. The invention solves the problem that the automatic motor of the three-dimensional laser scanner cannot be locked in the section scanning mode, and avoids the damage to the scanner caused by misoperation. Through the integrated design of the two modules of the constant speed rail car and the 3D laser scanner, the quality of the collected data is improved, the automatic collection of tunnel deformation data and disease information is realized, the labor cost is reduced, and the detection efficiency is improved.

The invention relates to a wind power generation tower prestress anchor bolt cage which comprises an anchor bolt, an upper flange and a lower flange. The anchor bolt penetrates through an anchoring nut, the lower flange, a positioning nut, an anchor bolt casing pipe, an adjusting nut, the upper flange, a T-shaped flange at the bottom of a wind power generation tower and a locking nut in sequence. The upper flange is an annular steel plate, an anchor bolt hole is an inverted-cone hole, and the adjusting nut can support the upper flange and adjust the levelness of the upper flange; the lower flange is an annular steel plate, a lower flange support bolt and a support nut bear the weight of the lower flange and can adjust the levelness of the lower flange, the lower flange is fixed through a pressing nut, and the lower flange support bolt is supported on a base plate. According to the wind power generation tower prestress anchor bolt cage, the anchor bolt and foundation concrete are separated through the anchor bolt casting pipe, the anchor bolt applies pretension force, and the concrete is subjected to the stress; the position and levelness of the upper flange are adjusted through the adjusting nut; the inverted-cone hole of the upper flange enables the center area, the inner edge and the outer edge of the T-shaped flange at the bottom to be pressed against the upper flange more tightly, and the inverted-cone hole is filled with sealing materials. The wind power generation tower prestress anchor bolt cage enables the integrality of the connection of a tower frame and the foundation to be good, is even in rigidity, and improves durability and anti-fatigue performance of connection.

A prefabricated steel fiber sludge-made ceramisite concrete wall based on T-shaped groove connection comprises prefabricated wall plates, cast-in-place connection columns and cast-in-place vertical edge components, wherein the two lateral sides of each prefabricated wall plate are each of a T-shaped groove structure, horizontal and vertical reinforcing steel bars are arranged in the prefabricated wall plates, each cast-in-place column is embedded in the T-shaped groove structures of the corresponding adjacent prefabricated wall plates to connect the prefabricated wall plates, each cast-in-place vertical edge component is provided with a longitudinal protrusion structure matched with the corresponding T-shaped groove structure, the longitudinal protrusion structures are embedded in the T-shaped groove structures on the outer sides of the edge prefabricated wall plates, longitudinal ribs are arranged in the cast-in-place vertical edge components, and reliable anchoring is achieved when the longitudinal ribs and the horizontal reinforcing steel bars in the edge prefabricated wall plates are embedded and spot welding is conducted on the joints one by one. The invention further provides a construction method of the prefabricated steel fiber sludge-made ceramisite concrete wall, and by means of the innovation of materials, the connection mode and the rib matching mode, the wall structure can have the advantages of being capable of lowing energy consumption and reducing vibration, ecological, environmentally friendly, capable of being rapidly constructed, economical and practical.

The invention relates to an integral casting construction process of a dry quenching furnace, comprising the following steps: casting dry quenching furnace cooling sections, outer part of chute bracket front side, two side walls and the bottom of a boiler inlet and a bifurcation chute of a primary dust remover, integrally casting by adopting automatically-flowing casting materials, baking the dryquenching furnace for 65-84 hours at the temperature of no higher than 600 DEG C after finishing casting. Under the condition of not damaging the prior structural conditions of the dry quenching furnace, the invention thoroughly solves the problem that the work amount is large in the prior bricking inlayed repairing scheme, ensures favorable integrity of laid bricks, saves time and material, and has low cost and long service life.

Disclosed is a side slope ecological protection method combining vegetation nursery grooves with hung-net spray-seeding. The method comprises the following steps that (1) the slope surface of a side slope is cleaned to be smooth; (2) nets are laid; (3) the vegetation nursery grooves are designed; (4) ground anchors are installed; (5) the vegetation nursery grooves are constructed, and the construction of the vegetation nursery grooves is completed according to the vegetation nursery groove design scheme determined in the step (3); (6) the step (5) is repeated to construct the multiple vegetation nursery grooves in the slope surface of the side slope; (7) base material mixtures are sprayed to the whole slope surface; and (8) the vegetation nursery grooves are filled, namely the side slope ecological protection is achieved through the combination of the vegetation nursery grooves and the hung-net spray-seeding. According to the side slope ecological protection method combining the vegetation nursery grooves with the hung-net spray-seeding, the vegetation nursery grooves and the hung-net spray-seeding are combined organically, and the attachment of the nets and the slope surface is improved. In addition, the stability of the side slope is improved, and the project investment is reduced, so that the anticipative ecological protection function on the constructed project can be achieved.

The invention relates to a pre-added axial force based circular support system in a shield tunnel and a construction method of the system. The circular support system comprises an annular section steel and steel plate combination, bearers vertical to a shield segment are arranged between the section steel and steel plate combination and the shield segment, the section steel and steel plate combination is divided into multiple segments in the circumferential direction, each segment comprises arc-shaped section steel, the different segments of the arc-shaped section steel are connected via connecting steel plates, and connecting positions are provided with spiral jacks. The spiral jacks apply pressures, the pressures are transferred to the bearers, so that a stress is distributed in the shield segment uniformly, and the continuous rigid integral support system with a pre-stress is formed; and thus, the shield segment is reinforced and supported effectively, and the shield segment is prevented from deformation, cracking, damage and even a safety accident due to concentrated pre-stress of holes in the shield segment in a connection channel.

The invention discloses a bridge pier consolidating method and a bridge pier consolidating device. The device is characterized by comprising a plurality of composite material sleeves of which the shape is matched with that of the cross section of the bridge pier; the sleeves are sleeved on the pier; an epoxy mortar protective layer is poured between the bridge pier and the sleeves; the sleeves are manufactured by a three-dimensional weaving process and have openings for convenient sleeving on the pier; the opening of each sleeve has an overlapped edge; the overlapped edges are connected by bonding, so that the sleeves form a whole annual structure; the inner wall of each sleeve has a raised annular rib structure; reinforcing ribs are poured in the epoxy mortar for reinforcing the bonding strength of the sleeves and the epoxy mortar; the openings of the adjacent sleeves form equal angles; each opening is bonded with a piece of strip fiber cloth along the height direction of the pier for covering the opening; and the pieces of strip fiber cloth connect the sleeves along the length direction of the pier into a whole structure. The device has the advantages of high strength, long service life and convenience for construction.

The embodiment of the invention provides an LED panel lamp. The LED panel lamp comprises a back plate, reflector paper, a light guide plate, a diffusion plate, light source assemblies and a frame assembly. The frame assembly comprises a frame and a movable plate, the movable plate is movably assembled on the inner side of the frame, and an extrusion space is formed between the opposite surfaces of the movable plate and the frame; and an expansion piece is assembled in the extrusion space, and the movable plate moves towards the center of the frame through the extrusion counter force of the expansion piece. The back plate is arranged in a covering mode and fixed to the top of the frame. The diffusion plate, the light guide plate and the reflector paper are sequentially arranged between supporting parts of the frame and the back plate in a laminating mode, and the reflector paper is tightly attached to the inner side of the back plate. The light source assemblies are assembled on the side surface, facing the light guide plate, of the movable plate. Each light source assembly comprises an aluminum substrate, an LED light source and partition strips arranged on the two sides of the LED light source in a spaced mode. The LED light sources and the partition strips are arranged on the aluminum substrates. The partition strips are attached to the ends of the light guide plate, and the thickness of the partition strips is larger than that of the LED light sources. A gap is formed between the end of the light guide plate and the end of each LED light source.

The invention discloses a powder metallurgy cab chain wheel and a preparation method, which is composed of a chain wheel body (1), teeth (2), characterized in that, the chain wheel body (1) arranges a locking D-shape shaft hole (4) at the center of the ring boss (3), a central circular shaft hole (6) is arranged at the center of the ring boss (3') of the other side, a flinger (7) is arranged on the outside of the perinium of the ring boss (3, 3'), and the surface is welded with a sealing ring (8). The preparation method is to adopt the powder metallurgy materials for once sintering into an integer. The powder metallurgy cab chain wheel of the preparation method has the advantages of abrasion proof, corrosion resistant, good integrity, also has easy installment, fixation, light proportion, high precision, easy mass production, moreover the device has excellent lubricating property, especially for the chain wheel of the cab.

The invention provides a composite melt-blown filter core material filled with feather fiber, and a preparation device and method thereof. The composite melt-blown filter core material filled with the feather fiber is characterized by comprising a core layer, a middle layer and a surface layer, wherein the middle layer is placed in the middle; the core layer and the surface layer are respectively composited on the two surfaces of the middle layer; the core layer is provided with melt-blown fiber; the middle layer is a composite layer provided with the feather fiber and melt-blown fiber; and the surface layer is provided with melt-blown fiber. According to the composite melt-blown filter core material, the feather fiber and polypropylene fiber are bonded together through a melt-blown technology, so a feather non-woven material is formed, the defect that the feather fiber is difficult to process is overcome and the filling amount of the feather fiber is increased.

The posture corrector comprises a connector, a first roller and a second roller, the connector comprises a first connecting base, a second connecting base and a shaft pin, the first connecting base and the second connecting base are connected through the shaft pin, the first connecting base is provided with a first through hole, and the second connecting base is provided with a second through hole; the first roller penetrates into the first through hole of the first connecting seat, and the second roller penetrates into the second through hole of the second connecting seat; the shaft pin sequentially and radially penetrates through the first roller and the second roller. The posture corrector has the advantages that the whole posture corrector is connected into a whole through the shaft pin; the structural integrity is better, and the stability and the reliability of the corrector are improved.

The invention discloses a multi-wall body composite material component and a RTM (Resin Transfer Molding) preparation method thereof, wherein the multi-wall body composite material component mainly comprises an interior wall component and an exterior wall component; neither connecting pieces nor cementation surfaces are arranged between the interior wall bodies of the interior wall component, between the exterior wall bodies of the exterior wall component and between the interior wall component and the exterior wall component; and the multi-wall body composite material component is mainly obtained after the interior wall component and the exterior wall component are co-cured and formed integrally. The RTM preparation method comprises the steps as follows: firstly, a die used for forming is prepared, the die comprises a female die and a male die, the female die is arranged on the periphery of a die cavity, and the male die is arranged in a gap among a cavity body of the die cavity; prepared holes for assembling are formed in the female die and the male die; a glue injection hole and a glue outlet hole which are used for forming are pre-formed in the female die; then reinforcing material is laid on the male die, and the female die and the male die are assembled through a fastening piece; and finally, the multi-wall body composite material component is obtained after vacuum glue injection, co-curing forming and demoulding trimming are carried out. The multi-wall body composite material component and the RTM preparation method thereof have the advantages of good building integrity, good reliability and good mechanical property, and can facilitate the realization of a light structural weight of equipment.

The invention relates to a robot welding system, in particular to a turntable robot welding system used for welding a medium plate. The turntable robot welding system comprises a central support, a triaxial moving device, a suspension robot, a biaxial positioner and a turntable clamp. A sliding rail of a front and rear shaft is arranged on a beam on the top of the central support. A front and rear shaft of the triaxial moving device is arranged on the sliding rail of the front and rear shaft, and a main body of the triaxial moving device is provided with a left and right shaft in a sliding mode through a sliding rail of a left and right shaft. One end of the left and right shaft is fixed with a sliding rail of an up and down shaft, which is provided with an up and down shaft in a sliding mode. The lower end of the up and down shaft is provided with the suspension robot. A dust removal device which is fixed with the up and down shaft is arranged above the suspension robot. The L-shaped biaxial positioner is arranged on a transmission case fixed with the base through a tilting axis thereof. A rotating shaft is fixed on the L-shaped biaxial positioner and provided with the turntable clamp through a rotating mechanism. The turntable robot welding system has the advantages of simple structure and excellent integrity. The suspension robot can be omnidirectionally positioned in a welding range, and the top dust removal device effectively covers a welding area.

The invention provides an electrically heated electric tooth flushing device with warm water. The device comprises a pump body, a speed changer, a motor, a power supply and a nozzle, and is characterized in that: the device has a housing, and the pump body, the speed changer, the motor and the power supply are arranged in the housing and form an integrated body with the housing; an electric heater unit is electrically connected with the power supply, the motor and a switch; the nozzle is located at the upper part of the housing and communicates with a water outlet end of the pump body; a sealed water tank is provided in the housing; a flexible pipe is provided in the water tank, one end of the flexible pipe is connected with a water inlet end of the pump body, and the other end of the flexible pipe is provided with a water filter which is capable of filtering water and is arranged at the lower part of the water tank. According to the invention, the device has good integrity, is light and portable, has an external power supply for charging and is convenient to use; on the occasion that there is no warm water for flushing of teeth, the electric heater unit in the device can supply warm water for flushing of teeth.

The invention discloses a long-span deformed steel truss and floor steel structure installation and construction method. The method includes the steps that firstly, a steel structure lifting frame and a lifting frame platform are installed on a lifting frame foundation; secondly, a lifter is installed on the lifting frame platform, and a steel strand is connected to the lower end of the lifter; thirdly, a first lifting partitioning unit of a main truss is spliced on a temporary tower between terraces on two sides; fourthly, the first lifting partitioning unit is hoisted by means of a temporary sling installed on the steel strand, then the left end and the right end of the first lifting partitioning unit extend to the terrace sides, and second lifting partitioning units are spliced; fifthly, the fourth step is repeated till the main truss of a gymnasium ceiling is spliced; seventhly, a front lifting partitioning unit, a left corner truss, a right corner truss, a front end truss and a rear end truss which are connected with the main truss are installed; eighthly, floor steel structures are installed along the outer facades of the outer side and the inner side of a gymnasium respectively. By the adoption of the method, loads can be effectively borne.

The invention discloses a dynamic cyclic load retaining wall model test device and a test method. The dynamic cyclic load retaining wall model test device comprises a model groove fixedly connected with the ground. A retaining wall filled with soil is arranged in the model groove and comprises retaining wall vertical plates arranged oppositely and a retaining wall bottom plate arranged at the lower ends of the retaining wall vertical plates. Seismic dynamic load applying equipment is arranged at the bottom of the retaining wall. A vehicle dynamic cyclic load device is fixedly arranged at the top of the retaining wall. The seismic dynamic load applying equipment and the vehicle dynamic cyclic load device are controlled by a controller. A soil pressure monitoring device used for testing pressure on soil and a displacement monitoring device used for monitoring the horizontal displacement of the retaining wall are arranged in the retaining wall. According to the dynamic cyclic load retaining wall model test device and the test method, the seismic dynamic load applying equipment and the vehicle dynamic cyclic load device are arranged to apply different dynamic loads on the retaining wall, and therefore a technician is guided to reasonably consider the influence of dynamic loads on the stability of the retaining wall in the construction period.

The invention discloses a method for preparing a carbon fiber-sewed hard plate thermal insulation material. The method comprises the following concrete steps: 1, using of a carbon fiber soft felt as amain raw material; 2, longitudinal sewing molding of carbon fibers; 3, preparation of a resin impregnation solution; 4, resin impregnation; 5, curing treatment; 6, carbonizing treatment; 7, high temperature purifying treatment; 8, machining; and 9, surface coating treatment for producing the hard plate thermal insulation material. The carbon fiber longitudinal sewing molding process using the carbon fiber soft felt as the main raw material and a resin carbon matrix as a reinforcement is adopted to make the hard plate thermal insulation material with a low density and a certain mechanical strength, the hard plate thermal insulation material undergoes surface coating hole-sealing treatment to achieve the characteristics of low density, difficult layering, low thermal conduction coefficient,good high temperature stability and strong processability, and the process cost is low.

The invention discloses a pyrophyllite-silicon carbide carbon brick for ladles which is prepared by the following raw materials by weight: 30-60 parts of pyrophyllite with a particle size of 5-30 mm, 20-30 parts of pyrophyllite powder with a particle size of 120-180 meshes, 10-20 parts of silicon carbide with a particle size of 120-320 meshes, 5-15 parts of -199# graphite, and 5-10 parts of phenolic resins. The invention adopts pyrophyllite and silicon carbide as main raw materials, and the produced unburned ladle lining brick can resist high temperatures of above 1500 DEG C, has good integrity, good brick joints, good heat stability, and strong molten iron erosion resistance, has a service life of over 800 times for ladles of above 120 T; because the pyrophyllite is cheap but good in quality, the whole product has low cost, good economic benefit, and less consumption of iron-resistant materials per ton.

This invention relates to a winch connection lever collection net, which comprises the ball collection cylinder, net plate, net plate rotation axis, rubber ball draw-off pipe, flow guiding plate, driving and executive devices and operation devices. The axis is located on the cylinder and the net plate down part is located with a swing rack. The executive device is the winch connection lever structure and the rotation rack and the executive device connection lever are hinged with one end connected to the winch lever. The driving device winch axis is connected to the operation device outside the ball collection cylinder with its winch located on the axis of the cylinder.

The invention discloses a retractable roof power driving and control device synchronous driving and debugging method. The retractable roof power driving and control device synchronous driving and debugging method can help obtain the technical parameters of off tracking of control trolleys in a multi-point hydraulic driving mode including hydraulic power systems, hydraulic rotating devices, hydraulic rotating device tail end large gear rings and a winch roller, guarantee the security and the quality and reduces the cost to a large extent. The retractable roof power driving and control device synchronous driving and debugging method solves the problem that a transmission structure is poor in integrality and low in reliability and two reducers cannot guarantee normal working of other equipment when breaking down. A driving system is composed of two sets of hydraulic power systems, and the hydraulic power systems supply power for the six hydraulic rotating devices, which are arranged on both sides of a winch and composed of low-speed large-torque hydraulic motors, brakes and planetary reducers, and six pinions provide transmission for the two tail end large gear rings on the both sides to drive the roller to rotate.

An improved super-flat floor construction process comprises the steps that (1) a combined type formwork is mounted; (2) a flaky force transmission piece system is mounted; (3) an embedded type metal force transmission rod and force transmission piece system is mounted; (4) a floor is flattened, specifically, scraping-flattening is conducted through a high-flatness invar floating ruler; (5) concrete is cured; (6) a liquid curing agent is constructed; and (7) embedded type metal force transmission rod construction joints are treated. The elevations at the construction joints of the formwork are convenient to adjust precisely through matching of a level gauge, and the steel formwork is fixed through split screws when reinforced without the need of welding and perforating, so that integrity is good; and cracking of concrete edge corners at the construction joints and settlement slab-staggering on the two sides of the construction joints can be prevented, damage to the ground due to using of equipment is reduced, and the high cost brought by floor maintenance is reduced.

The invention provides a collector ring. The collector ring comprises an epoxy resin body, a plurality of copper rings, a wiring column and an epoxy resin insulating ring; the epoxy resin body comprises an inner ring and a panel which is ring-shaped, positioned at the side edge of the inner ring and perpendicular to the inner ring; the plurality of the copper rings are matched with he epoxy resin body and are positioned at the outer side of the inner ring; the wiring column penetrates through the panel and then is welded with the plurality of the copper rings and is used for fixedly connecting the plurality of the copper rings; and the epoxy resin insulating ring is arranged at the outer sides of the copper rings in a sleeving mode. The collector ring disclosed by the invention is integrally rubberized by adopting the copper rings and epoxy resin, and is good in integrity. And the collector ring disclosed by the invention is high in safety and insulating property, and is long in service life.

The invention discloses a roller coating brush, and aims to solve the technical problems that a traditional roller coating brush involved in the background art needs to be dipped with materials in a using process, and the labor and time of constructors are wasted. According to the technical scheme, the roller coating brush comprises a roller coating head, a movable bolt, a material supply hose, amaterial storage cavity, a feeding opening, a cavity internal piston, a lead screw, a motor, a storage battery, a shell, an eccentric lock cylinder, a feeding button, a discharging button and an anti-sliding handle. The roller coating brush has the advantages that the roller coating brush can work for a long time after materials are added at a time, the roller coating brush can be effectively in contact with a working surface equally in different directions, stretching and retracting of an operation rod are realized under the condition that the roller coating brush is not externally connectedwith a lengthening rod, good integrity is maintained, and the roller coating brush is simple and easy to use.

The invention discloses a combined paint spray booth.An air supply module, a dry and wet combined module, a biological filtration module and an air exhaust module are arranged in the paint spray booth, wherein the air supply module and the air exhaust module are arranged on the opposite walls at the two sides of the paint spray booth respectively, and the dry and wet combined module, the biological filtration module and the air exhaust module are connected in series, and the dry and wet combined module and the biological filtration module are arranged in the paint spray booth wall where the air exhaust module is located in a stacked connection mode; the dry and wet combined module comprises a filtering component and a spray component which are embedded in the wall, and the biological filtration module comprises a biological filler layer embedded in the wall body.The combined paint spray booth is high in purifying efficiency, high in integrality and convenient to install, improves work environment of workers and effectively protects physical and psychological health of workers.

The invention discloses a bridge deck pavement surface layer structure and a maintenance construction method. The structure comprises a bridge deck concrete pavement layer and is characterized in that the bridge deck concrete pavement layer is coated with a bond waterproof layer with ester adhesives as primer, and a colloidal concrete pavement layer formed by blending a curing agent, polyurethane and aggregate is laid on the bond waterproof layer; and an anti-sliding layer is arranged on the colloidal concrete pavement layer. The structure has the beneficial effects that good integrality and waterproofness are achieved, it is ensured that a whole bridge deck is waterproof and free of water seepage, and therefore the waterproof effect is achieved; the good high-temperature-resisting performance is achieved; high wear resistance is achieved, and wear resistance of the structure is ten times that of common cement concrete; and good pressure resistance and the good bending resistance strength are achieved, the repeated effect of loads of a high-flow vehicle can be resisted, and it is ensured that the bridge deck is free of damage to grooves, cracks and the like. According to the construction method, the requirement for the construction environment condition is not high, no special construction tool is needed, no strict technological requirement is needed, and the engineering cost is relatively low.

The invention discloses an I-shaped semi-vertical linkage protection slope building block with open holes. The building block comprises an I-shaped building block body prefabricated with dry hard concrete materials through a vibration extrusion forming process, and is characterized in that linkage tenons are arranged on the faces, opposite to flanges, in two groove openings formed by the two flanges and a web of the I-shaped building block body; the linkage tenons in the same groove opening are symmetric, the linkage tenons in the different groove openings are arranged vertically, two holes are formed in the web, and the outer sides of the two flanges are each provided with a groove. A protection slope formed by laying the building block has better integrity than a traditional protection slope, wave runup and uplift pressure are lowered through the open holes of a face plate of the building block, and high erosion resistibility is achieved. The building block can adapt to small-amplitude changes of temperature, and is good in frost heaving preventing capacity, high in construction efficiency, and the protection building thickness of the protection slope can be reduced. The building block is durable and overall attractive and elegant, investment is saved, and later running maintenance is convenient.