233results about How to "Good drainage" patented technology

The invention relates to the technical field of basement buildings, and provides a basement waterproof structure which comprises a drainage ditch, a filtering grid plate and a drainage pipeline, the filtering grid plate is arranged at an opening of the drainage ditch, and one end of the drainage pipeline communicates with the drainage ditch to discharge rainwater outwards; a standby cavity is formed in the bottom of the drainage ditch and connected with a standby pipeline used for discharging rainwater outwards, a first communication groove communicated with the standby cavity is formed in the bottom wall of the drainage ditch, a cover plate used for opening and closing the first communication groove is hinged to the interior of the drainage ditch, and the cover plate is normally closed in the first communication groove; a buoyancy piece is arranged between the drainage ditch and the cover plate, and when the rainwater level in the drainage ditch rises to the opening of the drainage ditch, the buoyancy piece drives the cover plate to turn over so as to open the first communication groove. According to the basement waterproof structure, the good drainage performance of the drainage ditch can be kept, and the possibility that a basement is flooded is reduced.

The invention relates to the technical field of planting equipment, and discloses a traditional Chinese medicinal material planting field ridging device which comprises a traction frame used for being connected with a traction carrier, a supporting frame is fixedly connected to the bottom of the traction frame, a separation mechanism is arranged in the supporting frame, and a conveying belt is arranged behind a bucket, so that the traditional Chinese medicinal material planting field ridging device is formed. According to the ridging machine, shoveled soil can be conveyed, the soil is screened through the part composed of the round bars in the middle of the conveying belt, loose soil can fall back to the ground again from gaps of the round bars, and some large sundries such as stones in the soil can be continuously conveyed along with the conveying belt so as to avoid the situation that during ridging, the soil cannot fall off easily. In the prior art, soil in a place with stones is difficult to be uniformly compacted, and the conditions of looseness and large compactness difference occur, so that the growth of root systems of crops is influenced, the root systems are non-uniformly grown in the soil with different compactness, and the absorption of the root systems to water and nutrients is influenced.

The invention belongs to the technical field of geological disasters, and discloses an urban slope stability characteristic analysis method and system based on a block gliding risk, and the method comprises the steps: calculating the stability characteristic of each station based on a plane gliding method through measuring the slope size, soil and vegetation characteristics and other data; the relationship between the stability coefficient and each sensitive factor is analyzed, and the research result shows that the slope stability coefficient of each sampling point is basically more than 1.0, and the landslide risk is extremely low; the soil cohesive force has the greatest contribution in maintaining the stability of the slope and is most sensitive to the stability coefficient of the slope; the soil water content can reduce the slope stability coefficient from the aspects of increasing the self weight of the soil body, reducing the soil cohesive force and the like; the soil root system density can improve the overall stability of the slope from the aspects of enhancing the shear strength of soil, reducing soil erosion and the like. Soil is reinforced through vegetation concrete and other technologies, meanwhile, the slope vegetation coverage rate is increased, and regular monitoring of the midsole risky slope state is a good method for reducing the landslide risk of the midsole risky slope.

The present invention provides a magnetically closed and drainable water film-sealed and odor-proof floor drain core, which belongs to the technical field of drainage pipe systems. It solves the problems of the existing floor drain core structure design and distribution being complex, the poor sealing effect and the poor odor-proof performance, as well as the poor drainage volume and drainage effect. The magnetically closed and drainable water film-sealed and odor-proof floor drain core comprises a floor drain core body, the top of the floor drain core body being a water inlet, the bottom of the floor drain core body being a water outlet, a magnetically closed cover plate being movably connected at the water outlet of the floor drain core body, a soft sealing pad movably sealed with the water outlet being arranged on the magnetically closed cover plate, a limited portion being reversely connected to the movable connection end of the magnetically closed cover plate, a first permanent magnet being fixedly installed in the said limited portion, a magnetically active unit being arranged between the floor drain core body and the magnetically closed cover plate, and a connecting seat being arranged on the floor drain core body. The present invention has the advantages of ingenious structural design, good sealing effect, and good drainage volume and drainage effect.

A magnetic chip removal system of a machine tool comprises a chip removal machine body, a groove-shaped plate is installed on the outer side of a side plate on one side or two sides of a horizontal section of the chip removal machine body, the groove-shaped plate and the side plate form a containing cavity, a liquid drainage hole is formed in the position, located on the upper side of a top plate, of the side plate, the liquid drainage hole is communicated with the containing cavity, and a water collection tank is arranged at the end of the horizontal section of the chip removal machine body. The water collecting tank is communicated with the containing cavity and provided with a drainage device. By means of the structure, cooling liquid concentrated on the top plate and the side plates is discharged into the containing cavity through the multiple liquid discharging holes to be collected, due to the fact that the number of the liquid discharging holes is large, all the liquid discharging holes cannot be blocked, liquid discharging can be better achieved, the water collecting tank is arranged at the end of the horizontal section of the chip removal machine body, and the containing cavity is communicated with the water collecting tank; therefore, cooling liquid in the water collecting tank and the containing cavity can be discharged through the drainage device, and the liquid discharging effect is better.

The invention discloses an anti-blocking flood prevention emergency drainage device, and relates to the technical field of emergency drainage. The device comprises a partition plate, the partition plate is fixedly connected with the inner side face of a box body, communicating grooves are symmetrically formed in the surface of the partition plate, the surface of a coarse screening assembly is fixedly connected with the inner side face of a cover plate, and a smashing assembly is fixedly connected with the inner side face of the box body and arranged on the side, away from the coarse screening assembly, of the partition plate; the coarse screening assembly can screen out large-size impurities, large-size hard impurities such as stones and branches are prevented from entering the box body, the situation that the crushing assembly is damaged by the hard large-size impurities is avoided, a partition plate with a communicating groove is arranged, the situation that the impurities are rushed into the device to cause blockage in rainstorm is avoided, the partition plate divides an inner cavity of the box body, and the inner cavity of the box body is blocked. The drainage system can prevent firm impurities from being flushed into the drainage system by rainstorm during rainstorm, so that the drainage system is prevented from being blocked, and the drainage system is ensured not to collapse during emergency drainage.

The invention discloses a solid waste-based multifunctional tailing asphalt pavement material and a preparation method thereof, and the pavement material comprises the following components in parts by mass: 4.5-5.5 parts of polyurethane modified asphalt, 45-60 parts of titanate modified iron tailings, 2-5 parts of surface activated copper tailing powder, 20-35 parts of copper tailing sand and 0.5-1.0 part of acetic anhydride modified wollastonite fiber. The high and low temperature performance, the durability and the self-healing performance of the asphalt mixture are comprehensively improved by modifying the solid waste tailing material and the asphalt, and the application range of the asphalt mixture is effectively widened.

The utility model provides an oil guide lubricating structure, a through axle and a vehicle, and relates to the technical field of automobiles, the oil guide lubricating structure is arranged in an axle housing of the through axle, a containing cavity is formed in the axle housing, and a bearing and a driven gear are arranged in the containing cavity; the oil guide lubricating structure comprises a connecting part and a lubricating part, wherein the connecting part is fixedly connected with the inner wall of the axle housing; the oil guide part is connected with the connecting part, an oil channel is formed in the oil guide part, and the oil channel extends from one end of the driven gear to one end of the bearing; the oil collecting part is connected to one end of the oil guide part, an oil storage cavity communicated with the oil duct is formed in the oil collecting part, and the bottom of the bearing is located in the oil storage cavity. According to the oil guide lubricating structure, oil thrown out by rotation of the driven gear can be received, the oil is guided to the bottom end of the bearing, and it is guaranteed that the through axle bearing is fully lubricated.

The utility model discloses a tunnel ditch structure which comprises a reserved ditch and a water tank base arranged in the reserved ditch, a through hole is formed in the bottom of an inner cavity of the water tank base, a barrel is integrally arranged at the front and rear positions of the left side of the water tank base, and a rotating shaft is movably connected to the inner surface of the barrel. A cover plate body is fixedly connected to the opposite sides of the rotating shafts, a leakage hole is formed in the top of the cover plate body, connecting bases are fixedly connected to the front and rear positions of the cover plate body, and sliding ways are formed in the inner surfaces of the connecting bases. The drainage effect is improved in a leakage mode through the through hole in the bottom of the inner cavity of the water tank base, meanwhile, the rotating shaft rotates on the inner surface of the barrel to open the connecting base in a rotating mode, the filter screen slides into the sliding way in the connecting base through the sliding block, water flows through the filter screen through the leakage hole, and the water flow is discharged. Impurities are filtered through filtering of the filter screen, and the purposes of leakage drainage and impurity filtering are achieved through the arrangement of the structure.

According to the bridge floor drainage system of the double-layer steel structure bridge, the double-layer steel structure bridge comprises an upper-layer bridge floor and a lower-layer bridge floor, and the top face of each of the upper-layer bridge floor and the lower-layer bridge floor comprises a steel beam top plate and a pavement layer laid on the upper side of the steel beam top plate; the bridge floor drainage system comprises an upper-layer bridge floor drainage system and a lower-layer bridge floor drainage system which are respectively arranged on the upper-layer bridge floor and the lower-layer bridge floor; each of the upper-layer bridge floor drainage system and the lower-layer bridge floor drainage system comprises a steel box girder cantilever arm arranged on the outer side of the sidewalk guardrail, a plurality of drainage assemblies are arranged in the steel box girder cantilever arms at intervals in the bridge direction, and water flow collecting pipes connected with the drainage assemblies are fixedly mounted at the bottoms of the steel box girder cantilever arms; the water flow collecting pipe is arranged along the steel box girder cantilever arm, the steel truss and the pier and drains water flow into a ground drainage system along with the pier. The drainage device is beneficial to drainage of the double-layer steel structure bridge deck, good in drainage effect and convenient to maintain, the durability of the bridge deck is improved, and the safety risk caused by accumulated water on the bridge deck is greatly reduced.

The invention discloses a multi-element disaster cooperative treatment method during coal mine roadway tunneling, which specifically comprises the following steps: drilling holes at a roadway coal seam along the tunneling direction to form a first drill hole, performing retrogressive staged fracturing in the first drill hole, and respectively drilling holes in roadway sides on two sides of a roadway to form a second drill hole; respectively drilling the final hole position of each drill hole to the position corresponding to the final hole position of the first drill hole along the direction parallel to the roadway to form a second drill hole and a third drill hole, respectively carrying out transient electromagnetic detection on the second drill hole and the third drill hole, respectively carrying out retreat type staged fracturing after the transient electromagnetic detection is completed, installing a gas extraction system on one roadway side of the roadway, and installing a gas extraction system on the other roadway side of the roadway. The second drill hole and the third drill hole are connected into a gas extraction system for gas extraction; cooperative treatment of multi-element disasters in the roadway can be achieved, the effect that each hole has multiple purposes is achieved, the repeated construction and disaster treatment time is shortened, and the roadway tunneling speed is increased.

The utility model belongs to the technical field of pavilions, and particularly relates to a top drainage structure of a pavilion, which comprises a pavilion base, a hollow pavilion top cover, a plurality of hollow support columns, a cleaning component, a driving component and a transmission component. A plurality of supporting columns are fixedly installed between the pavilion base and the pavilion top cover and arranged in parallel, the supporting columns are communicated with an inner cavity of the pavilion top cover and penetrate through the pavilion base, a plurality of water outlets and a plurality of slag outlets are formed in the pavilion top cover, and the water outlets and the slag outlets incline inwards. The pavilion top drainage device is reasonable in design and easy and convenient to operate, the pavilion top drainage effect can be effectively improved, meanwhile, through matched use of the driving assembly, the transmission assembly and the cleaning assembly, the rapid cleaning effect can be achieved in a simple manual intervention mode, sundries such as fallen leaves are prevented from blocking a drainage opening and a slag discharging opening, and the service life is prolonged. And the drainage and deslagging effects of the pavilion are improved.

The invention relates to the technical field of flower soil, and particularly discloses a Chinese rose nutrient soil formula and a processing method thereof. The Chinese rose nutrient soil formula comprises humus soil, sandy soil, seaweed-peat soil, organic substances, perlite, river sand, bone meal, ammonium sulfate, monopotassium phosphate and a microbial agent. The seaweed is added into the peat soil, the water retention and fertilizer retention performance of the nutrient soil can be further improved, a continuous nutrient source can be provided for the China rose, and meanwhile, the peat soil has the effect of adjusting the soil pH value, and nutrient absorption of the China rose is facilitated. In addition, by increasing the number and activity of beneficial microorganisms in the soil, ecological balance of the soil is kept, and formation of a soil aggregate structure is promoted.

The utility model discloses an electrodialysis membrane module device, which belongs to the field of electrodialysis and comprises an electrodialysis membrane component and a drainage base detachably arranged at the bottom of the electrodialysis membrane component, and the drainage base comprises a heightening part and a mounting part arranged at the top of the heightening part. The bottom end of the electrodialysis membrane assembly is placed at the top of the heightening part, the side wall of the electrodialysis membrane assembly is detachably connected with the mounting part, and a plurality of first drainage grooves are formed in the top of the heightening part in the length direction of the heightening part. According to the electrodialysis membrane module, the drainage base with a simple structure is detachably arranged at the bottom of the electrodialysis membrane module, so that the problem of rusting of the clamping iron plate can be solved, and the electrodialysis membrane module is convenient to disassemble and assemble.

The utility model relates to an athletic field structure adopting an overhead structure on a roof, which belongs to the technical field of constructional engineering and comprises a building roof surface, stair passages communicated with the building roof surface are arranged on two sides of the rear end of the building roof surface, and an athletic field sports layer is arranged at the upper end of the building roof surface. A plurality of downpipe channels are arranged on the periphery of the building roof surface, and roof edge drainage ditches communicated with the downpipe channels are arranged on the periphery of the athletic field sports layer. The track and field sports layer comprises a track and field runway, a football field is arranged in the track and field runway, and a roof drainage open ditch communicated with the roof edge drainage ditch is arranged between the track and field runway and the football field. The device has the characteristics of compact structure, high structural stability and good drainage effect. The problem of rapid drainage of the track field built on the building roof is solved. The utilization rate of the roof is effectively improved, the land cost of sports field construction is reduced, meanwhile, the load is reduced, and the contradiction of standardizing the drainage slope is solved.

The utility model discloses a two-in-one anti-theft double-inner casement window capable of enhancing heat insulation and sealing performance, which is provided with a frame, a screen sash, a stainless steel diamond screen and a window sash, the window sash is used for installing glass, and the frame forms a frame body of the casement window. A plurality of glue injection corner brace holes are formed in the frame, so that movable glue injection corner braces are adopted for 45-degree corner combining connection; the glass and the gauze sash are opened towards the indoor direction; a stainless steel diamond gauze is mounted on the gauze fan; the frame 1 is provided with two nylon heat insulation strips and four nylon heat insulation strips, and one waterproof rubber strip, one sealing duckbilled rubber strip and one sealing rubber strip are adopted for lap joint of the frame and the window sash.

The dam body structure suitable for the aeolian sand area comprises a dam body, a dam crest, an upstream side dam, a downstream side dam and a pile foundation, the dam body is a dispersive soil material area, a modified dispersive soil material area is arranged on the surface of the dam body, the upstream side dam comprises an anti-seepage structure, and the downstream side dam is provided with a downstream protection slope; a concrete tooth wall is arranged at the bottom of the upstream side dam, a wave wall is arranged at the top of the upstream side dam, a mattress drainage body and an arris drainage body are arranged at the bottom of the downstream side dam and connected with each other, inverted filter layers are arranged between the mattress drainage body and the dispersive soil material area and between the arris drainage body and the dispersive soil material area, and seepage stopping grooves are formed in the pile foundation along the axis of the dam body. The modified dispersive soil materials are arranged on the periphery of the dispersive soil material area of the dam body so as to protect the dispersive soil materials, the crack is sealed through the anti-seepage structure so as to perform anti-seepage treatment on the upstream, and the inverted filter layer is arranged so as to achieve the functions of inverted filtration and drainage. The inverted filter layer is compact and hard in texture, resistant to weather, continuous in grain composition and good in drainage performance and permeation stability.

The invention discloses a leveling device for paving a pervious concrete pavement and a leveling method thereof, and relates to the technical field of pavement paving, the leveling device comprises a vehicle body, a box body is fixedly mounted at the top of the vehicle body, a charging box is fixedly mounted at the upper end of an inner cavity of the box body, and the bottom of the charging box is connected with a leveling assembly through a pipeline; and the leveling assembly is used for paving pervious concrete on the earth road. According to the leveling device for paving the pervious concrete pavement and the leveling method of the leveling device, the size of the discharging groove in the collecting hopper can be automatically adjusted through the arranged adjusting part according to the actual condition of the pavement, so that the discharging amount of concrete is accurately controlled, and the discharging groove is enlarged at the sunken part of the pavement so as to increase the discharging amount of the concrete and fill the sunken part; at the raised part of the road surface, the discharge chute is reduced to reduce the discharge amount of concrete and avoid excessive accumulation, and the intelligent adjustment ensures the flatness of concrete laying and improves the construction quality.

The invention relates to the technical field of farmland water conservancy engineering, in particular to a rubble retaining wall irrigation system for improving farmland water circulation. The rubble retaining wall irrigation system for improving farmland water circulation specifically comprises a ditch, a filter screen layer, a pebble layer, an adsorption layer, a medium-coarse sand layer and geotechnical cloth which are laid on the left side and the right side of the bottom of the ditch, retaining wall layers located on the two sides above the geotechnical cloth, and a paving layer located between the retaining wall layers, undisturbed soil is backfilled on the surface of the paving layer. The device has the advantages of being capable of effectively preventing cultivation soil loss, good in water circulation performance and convenient for water body exchange among farmland drainage ditches, farmland ditches and soil.

This utility model relates to the field of road engineering, specifically to a rutting-free semi-flexible asphalt pavement structure, comprising, from bottom to top: a cement-stabilized crushed stone base course; a bonding layer composed of a 0.5-0.8 kg / m² modified emulsified asphalt prime coat and a 2.0-2.5 kg / m² rubber asphalt tack coat; a semi-flexible asphalt lower layer using open-graded asphalt mixture; a stress-absorbing layer using highly elastic modified asphalt sand; a semi-flexible asphalt upper layer using discontinuously graded asphalt mixture; and a functional layer using a water-based epoxy resin seal coat. This utility model, through its double-layer semi-flexible structure and gradient porosity design, enhances the overall strength and deformation resistance of the pavement, significantly improving rutting resistance; the composite bonding layer design effectively improves the adhesion between the base course and the surface course, preventing interlayer slippage and ensuring strong interlayer bonding; a three-dimensional drainage network and edge drainage system quickly remove surface water, reducing water damage and optimizing drainage performance; and the application of the stress-absorbing layer and polyester fibers effectively disperses stress concentration caused by vehicle loads, resulting in uniform stress distribution.

The invention discloses wind-proof and sand-fixing geotechnical cloth based on an EICP technology and a preparation method. The wind-proof and sand-fixing geotechnical cloth is composed of two layers of needle-punched geotechnical cloth, a supply system arranged between the two layers of needle-punched geotechnical cloth and a water retention film arranged on the outer surfaces of the needle-punched geotechnical cloth. The needle-punched geotextile takes degradable plant fibers as raw materials, and is processed and formed by a needle punching process; the replenishment system comprises a main replenishment pipe, a replenishment pipe joint, a branch replenishment pipe, a butterfly-shaped joint and a replenishment plate; the branch supply pipe comprises a plurality of branch supply pipe sections arranged in the axial direction of the branch supply pipe, the branch supply pipe sections are connected with the main supply pipe through supply pipe connectors, and every two adjacent branch supply pipe sections are connected through a butterfly connector. The supply plate extends out of the cavity of the butterfly joint along the two radial ends of the branch supply pipe; a gap is formed between the part, located in the cavity, of the supply plate and the inner wall of the butterfly-shaped connector; the water retention film is made of degradable plastic and is coated on the outer surface of the windproof and sand-fixing geotextile through a hot-dip coating process.

The utility model discloses a concealed leakage drainage device for a toilet, and belongs to the technical field of building decoration construction. Comprising a floor tile body, a hidden drainage connecting pipe is arranged in the floor tile body, a filtering assembly is embedded in the hidden drainage connecting pipe, a bonding layer is installed at the bottom of the floor tile body, and a floor heating pipe layer is arranged at the bottom of the bonding layer. Sundries in sewage can be intercepted to prevent a pipeline from being blocked, a rotating rod can be rotated to drive a cleaning plate to clean meshes in the floor drain, and the meshes of the floor drain can be dredged conveniently, so that the drainage effect of the device is better; according to the concealed drainage device for the bathroom, the sealing assembly is arranged, the ejector rod is moved to drive the sealing plate to move out of the containing groove, the sealing plate moves to the top of the concealed drainage connecting pipe and can play a sealing and covering role, peculiar smell in the concealed drainage connecting pipe can be prevented from being blown out, and therefore the using effect of the concealed drainage device for the bathroom is better.

The invention belongs to the technical field of constructional engineering, and discloses a planting roof expansion joint waterproof structure and a construction method of the planting roof expansion joint waterproof structure. The first end part of the waterproof coiled material is clamped between the drain tank and the vertical reverse ridge, extends upwards and blocks the entrance and exit of the expansion joint; a concrete protective layer; and the filter plate is blocked at the water inlet of the drain tank. The waterproof coiled material is used for blocking the entrance and exit of the expansion joint, so that the construction process is simplified; the concrete protective layer is built to completely cover and press the waterproof roll, so that the waterproof roll can be prevented from falling off, and the integrity and durability of the waterproof structure are guaranteed; the drainage tank is built to receive flowing water and timely drain the water, the drainage effect is good, the filter plate is installed at the water inlet to filter sundries, the hidden danger of blockage can be reduced, and meanwhile the drainage effect is improved.

The invention relates to the technical field of medical instruments, in particular to a drainage nursing device for nursing, comprising: a base, the side surface of which is provided with a controller; the main drainage nursing mechanism comprises a shell fixedly connected to the upper end face of the base, a magnetic variation assembly and a hydraulic press are arranged on the upper end face of the shell, and a magnetic resistance assembly, a flow suction device and a main liquid storage box are sequentially arranged in the shell from top to bottom; through a magnetic variation assembly, a hydraulic press, a magnetic resistance assembly and a flow suction device in the main drainage nursing mechanism, corresponding suction force can be provided according to the patient moving frequency transmitted by the auxiliary drainage nursing mechanism, then the purpose of controlling drainage suction force is achieved, the suction force can be adjusted according to different moving states of a patient, and the stability and reliability of the drainage effect are ensured; safety and effectiveness of drainage are improved, and risks such as infection caused by improper drainage are reduced.

The utility model relates to the technical field of medical instruments, in particular to a neonatal nursing drainage tube fixing device which comprises a bird nest body, four grooves are formed in the upper portion of the outer surface of the bird nest body, first limiting grooves are formed in the lower groove walls of the four grooves, and first limiting pads are fixedly connected to the inner walls of the four first limiting grooves. The device comprises four grooves, the front sides of the four grooves are all provided with hook-and-loop fastener rough surfaces, the rear sides of the four grooves are all provided with connecting belts, the middles of the lower ends of the four connecting belts are all fixedly connected with sealing blocks, the lower ends of the four sealing blocks are all provided with second limiting grooves, and the inner walls of the four second limiting grooves are all fixedly connected with second limiting pads. The front portions of the lower ends of the four connecting belts are fixedly connected with hook faces of hook-and-loop fasteners. According to the drainage tube fixing device for neonatal nursing, good drainage can be guaranteed, meanwhile, body position management can be effectively guaranteed, and smooth fixation of the drainage tube can be guaranteed.

This utility model discloses a highway bridge with convenient drainage, comprising a beam body and concrete and asphalt layers arranged sequentially from bottom to top on the beam body. Drainage ditches are provided on both sides of the beam body, with a filter layer at the top of the drainage ditches. A water collection trough of a certain height is reserved above the filter layer. Multiple drainage holes are spaced along the length of the bridge on the filter layer, with filter plugs inside the drainage holes. A drain pipe is provided at the bottom of the drainage holes, with the outlet of the drain pipe extending to the pier foot and connecting to a collection pool. This utility model has a simple structure, high ease of construction, short construction period, and low construction cost. It ensures good drainage effect and is very easy to clean, greatly reducing cleaning costs. The addition of a rainwater collection pool at the pier foot of the highway bridge enables rainwater recycling, which is environmentally friendly and prevents foundation corrosion at the pier foot, thus improving the service life of the bridge.

The present disclosure relates to a tire in which: a meandering groove extending in a tire circumferential direction is formed on a tread surface; a groove width of the meandering groove in a tire width direction varies along the tire circumferential direction at a predetermined repeating cycle; a ratio Wmin / Wmax of a maximum width and a minimum width of the groove width is 0.35 to 0.85; a first groove wall and a second groove wall, which are two groove walls of the meandering groove, each extend in a sinusoidal meandering manner in a tread surface view with the predetermined repeating cycle as a cycle length; and a first sinusoidal curve formed by the first groove wall and a second sinusoidal curve formed by the second groove wall are arranged with a phase difference of 1 / 8 to 3 / 8 of a cycle in the tire circumferential direction in the tread surface view.

The utility model discloses a novel automobile charging seat drainage nozzle connecting device, including quick joint and drainage nozzle joint, the drainage nozzle joint is inclinedly connected in the bottom of quick joint, when quick joint horizontal direction is established, the projection angle of the central axis of drainage nozzle joint and quick joint central axis on vertical plane is -30 degrees, the projection angle of the central axis of drainage nozzle joint and quick joint central axis on horizontal plane is 15 degrees or -15 degrees, the top of quick joint is formed with the clamping slot, the inside of clamping slot is formed with the drainage groove, the inner chamber of drainage groove is linked together with drainage nozzle joint inner chamber, the inner wall of clamping slot is equipped with the buckle structure symmetrically, the rubber pad with drainage hole is located in the clamping slot, the rubber pad is laid on the brim of drainage groove 4, and the drainage hole is linked together with the drainage groove. The utility model discloses simple structure, and it is easy to operate, improves the stability of connection and production efficiency, ensures that the drainage is smooth and efficient, and reduces the water accumulation residual.

The utility model relates to the technical field of box girder steel mould rust removal, in particular to a portable box girder steel mould rust removal device which comprises a moving trolley, a push rod is arranged at the top of the moving trolley, a laser rust removal instrument is arranged at the bottom of the moving trolley, and a baffle is fixedly connected to the bottom of the moving trolley. A rust removal cavity is formed in the inner side of the baffle; the ventilation structure is arranged in the moving trolley; the filtering structure is matched with the ventilation structure, so that smoke dust can be driven into the mounting cylinder through airflow in the using process, harmful substances and peculiar smell are removed through a filtering piece of an activated carbon material component, and meanwhile, large-particle impurities are removed through cooperation with filtering holes; when excessive impurities are adsorbed in the mounting cylinder, the limiting rods and the clamping blocks can be triggered to be distributed in a staggered manner under the action of the filtering structure, so that a worker is prompted to replace, a good filtering effect is kept, and the problem of pollution caused by direct scattering in air is avoided.

The invention discloses an embankment structure which is characterized in that a first prefabricated wall body is arranged at the slope top of an embankment body, a part of the first prefabricated wall body is embedded into the embankment body, a second prefabricated wall body is arranged at the slope bottom of the embankment body, a part of the second prefabricated wall body is embedded into the embankment body, the top of the first prefabricated wall body is provided with a first protruding part, and the top of the second prefabricated wall body is provided with a second protruding part; the geogrid is arranged below the embankment structure along the height direction of the embankment structure; and the drainage pad is embedded in the embankment body. Therefore, the top of the first prefabricated wall body is provided with the first protruding part, the top of the second prefabricated wall body is provided with the second protruding part, the anti-scouring performance of the embankment structure can be improved, the geogrid is arranged below the embankment structure, the anti-sliding performance of the embankment structure can be improved, and the drainage pad is embedded in the embankment body, so that the anti-scouring performance of the embankment structure is improved. The drainage effect of the embankment structure can be remarkably improved, and the stability and reliability of the embankment structure can be improved through combined application of the first prefabricated wall body, the second prefabricated wall body, the geogrid and the drainage pad.