274 results about "Buffer strip" patented technology

The invention relates to a method for utilizing a buffer strip to control agricultural non-point source pollution of a tidal river network area of a plain, belonging to the technical field of environmental protection. The method comprises the following steps of: selecting buffer strip areas, carrying out primary treatment to the buffer strip, setting a water distribution system of the buffer strip, selecting and planting plants in the buffer strip and introducing water source into the buffer strip. The method has the characteristics of simpleness, convenience, practicability, good purifying effect and free maintenance management.

The invention discloses a buffer area structure among production lines and a control system thereof. Vehicle bodies processed on an upstream production line respectively enter two conveying belts or buffer strips through two selected inlets according to a rolling plan of a downstream production line; a batch of vehicle bodies to be sorted are stored on the buffer strips, and suitable vehicle bodies are selected in the buffer strips and enter the conveying belt to be on line in a selected nearest route by combining the rolling plan of the downstream production line with states of the vehicle bodies on the conveying belts; the two conveying belts directly provide self-finished vehicle bodies for the downstream production line; the two conveying belts at the same time respectively have effects of providing materials for the downstream production line and preparing to provide the materials for the downstream production line; the two conveying belts alternately undertake the task of providing the materials; and when one conveying belt provides the materials for the downstream, the other conveying belt reserves materials to prepare to provide the materials, wherein the beat of providing the materials is the same with that of requirement of the downstream production line so as to guarantee both reliability of an on-line sequence and timeliness of providing the materials.

The invention relates to a riverbank ecological buffering band and a construction method for the same. The construction method comprises the following steps of (1) selecting a construction area, (2) adjusting gradient of the construction area, (3) determining a group construction scheme, and (4) planting plants according to the group construction scheme. The invention further provides a riverbank ecological buffering band constructed according to the method. Plants are optimized without a change of an original soil layer structure of the riverbank buffering band, and sewage can be stopped and controlled before entering the river way; resistance of the sewage is increased when the sewage flows through the buffering band, working time of the sewage between the buffering band and plant roots and the soil micro-bial community can be increased; pollutants can be removed; water and soil loss can be reduced; load of pollutants flowing into the river can be reduced; and land resources can be conserved and environment can be beautified.

The invention discloses a riverside ecological multi-dimensional circulating type wet land slow-flow infiltration pollutant intercepting system which mainly comprises a primary vegetation buffer zone, a hydrophilic platform, an adjusting pond, an ecological retention system and a secondary vegetation buffer zone. The primary vegetation buffer zone is arranged on one river-ward side along the riverside road surface, the gradient is consistent to the gradient of an original bank slope, the downward width along the bank slope is 1.0-1.2m, and the length is 800-1000m. The ecological retention system is provided with a planting soil layer, a filler layer, a reverse osmosis layer and a gravel layer which are sequentially arranged from top to bottom. The riverside ecological multi-dimensional circulating type wet land slow-flow infiltration pollutant intercepting system reduces pollution load caused by surface source runoff flowing into a river channel during the rainy season, achieves the synergic purpose of water channel water quality circulating purification and wet land conservation during the non-rainy season, has good landscape effect and has the reference and guidance effects on surface source pollutant intercepting and river and lake water purification.

The invention belongs to the field of agricultural environmental protection, and particularly relates to a method for establishing nature-simulated ecological farmland. According to the method, the farmland, trenches, a tractor-ploughing road, farmland buffer zones and a buffer purification pool are established; on the basis of a farmland production function, a farmland ecological function is further exerted, the farmland is utilized for consumption and sinks of environmental nitrogen and phosphorus; through soil carbon sinks on the farmland and biodiversity, non-point source pollution to the farmland is controlled. Through adoption of the method, the functions of the farmland, farmland ridges, the trenches, the tractor-ploughing road and the buffer purification pool in a whole compound system are optimized; the farmland biodiversity is improved, and a farmland planting and breeding compound function and a pollution source control function are extended; farmland ridge buffering, beautifying and economic functions are added, and the non-point source pollution self-purification capability of the farmland is enhanced; the trenches are hardened through ecologicalization, and nitrogen and phosphorus nutrients can be recycled; interception and purification of the non-point source pollution to the farmland are regulated and controlled; an ecological corridor is established, farmland landscapes are beautified, and the ecological value of the farmland is improved.

The invention provides a river ecological reactor system, comprising a riparian ecological buffer strip, a plant reconstruction area, a water plant strip, zoobenthos and aquatic animals, wherein the riparian ecological buffer strip is constructed on the river bank, the plant reconstruction area is constructed on the river hydro-fluctuation belt, the water plant strip is constructed in the river, the zoobenthos and aquatic animals are stocked in the river. The invention also provides a method for constructing the river ecological reactor system. The construction method provided by the invention has low investment, is environment friendly, effectively accomplishes the unification of the three benefits of improving the water quality, enhancing the ecological functions and presenting landscapes, and has strong utility value as well as a wide application prospect.

The invention provides a composite curtain wall for efficiently intercepting pollutants in a farmland surface source. The composite curtain wall is characterized in that a surface plant buffer zone, a plant protection slope, a water collection zone and an anti-pollution curtain wall are arranged in sequence along the direction from a farmland drain outlet to a field drain ditch; the water collection zone is lower than the surface plant buffer zone and the anti-pollution curtain wall in height; the anti-pollution curtain wall is formed by gravel, filled soil or the combination of the gravel and the filled soil, and the shape of the cross section of the anti-pollution curtain wall is trapezoid. According to the composite curtain wall provided by the invention, the pollutants discharged by the farmland can be intercepted and purified through plant absorption and physical absorption filter, the nitrogen and phosphorus pollutants in the farmland surface source can be effectively prevented from entering water body such as a river, and the composite curtain wall has good ecological benefit and the popularization and application value.

The invention discloses a lake buffer zone building method for non-point source pollution control. The method includes the following steps that a region among a farmland, a village and a lake is selected to serve as the foundation to build a buffer zone. The buffer zone comprises a vegetational zone (1) planted with indigenous plants (3). The end, away from the lake, of the vegetational zone (1) is the front end, and a reinforcement substrate zone (2) is built at the front end or the middle of the vegetational zone (1). The lake buffer zone building method for non-point source pollution control which is good in purifying effect, easy to operate and low in cost is provided for control over non-point source pollution and particularly control over nitrogen and phosphorus in the non-point source pollution.

A magnetic permeating pot with a flower-shaped hot-forged bottom covering piece and a production method thereof belong to the technical field of aluminum pots. The magnetic permeating pot structurally comprises an aluminum alloy pot body and a steel bottom covering piece, the steel bottom covering piece has a flower-shaped structure and is embedded into the bottom surface of the aluminum alloy pot body and keeps flat with the bottom surface of the aluminum alloy pot body, and expansion buffer strips are formed on portions, extending out of the steel bottom covering piece, of the aluminum alloy pot body. The production method includes embedding the steel bottom covering piece into the bottom surface of the aluminum alloy pot body by hot forging. Compared with the prior art, the magnetic permeating pot with the flower-shaped hot-forged bottom covering piece has the advantages that firstly, relative difference of variation of expansion caused by heat and contraction caused by cold between the aluminum alloy pot body and the bottom covering piece can be reduced greatly; secondly, the defect of middle arch of the integral stainless steel bottom covering piece can be eliminated completely; thirdly, noise caused by magnetic lag can be lowered evidently; fourthly, skin effect of induction current can be improved greatly; and fifthly, the flower-shaped hot-forged bottom covering piece is firmer, flatter, more energy-saving and more effective as compared with the bottom covering piece in the prior art.

The invention relates to a finite element analysis method for simulating ride comfort of an entire vehicle under pulse input. The finite element analysis method comprises the following steps: (1) establishing an automobile finite element model by using computer software at a design and development stage of an automobile; (2) defining a transient excitation buffer strip or triangular bump size model; (3) calculating loading parameters; (4) enabling front and rear wheels to passthrough a buffer strip or triangular bump at a certain speed while simulating left and right wheels of the automobile; (5) calculating transient response of the automobile at certain timeunder aninput determinate signal. The research and development period is shortened; the research and development cost is saved; the operation is convenient; only 2-3 hours are required for calculating the ride comfort of the entire vehicle through the software; the ride comfort of the automobile can be very easily improved through a finite element method.

The invention relates to a construction method for a nitrogen and phosphorus loss system of greenhouse soil of an intercept river network area, which comprises the following steps that: an ecological canal is constructed on the earth surface of greenhouse soil, the ecological canal is formed by splicing pipes with U-shaped cross sections, the bottoms of the U-shaped pipes are poured with concrete, a side wall joint between every two U-shaped pipes is provided with a gap, and plants are planted in the gap; the bottom of the ecological canal is provided with a growth box, a growth medium is arranged in the growth box, plants are planted in the growth box, and the growth medium is coal cinder, detritus or ceramsite; the ecological canal is communicated with a water collecting tank, the water collecting tank is connected with a wetland rice field, two ends of the wetland rice field are provided with buffer zones, rice is planted in the middle zone between the buffer zones, and stored water flowing out from the water collecting tank flows into the wetland rice field through the buffer zone, and then flows out from the buffer zone at the other end of the wetland rice field. According to the invention, the load of nitrogen, phosphorus nutrient and other nutrient substances can be effectively reduced, the runoff load of the greenhouse soil is effectively reduced, and the problem of eutrophication of river network water near the greenhouse soil can be solved.

The invention provides an inland riverbank vegetation buffering and purifying zone, comprising: a riverbank vegetation buffering zone and a water and bank connection zone, wherein the riverbank vegetation zone has four layers, and a nonwoven earthwork cloth, a vegetation brick and a soil layer are laid from the ground in order. The water and bank connection zone comprises a broken stone bottom layer, nonwoven earthwork cloth, a broken stone inverted filter, ecology fish nest bricks, ecology retaining wall bricks and a coupling bar, wherein the broken stone bottom layer is laid on the river bottom, two ends of the broken stone inverted filter are connected to the nonwoven earthwork cloth layer and the broken stone bottom layer of the riverbank vegetation zone by a certain gradient, the nonwoven earthwork cloth is laid on the bottom of the broken stone inverted filter, the ecology fish nest bricks are laid on the upper of the broken stone inverted filter, the ecology retaining wall brick is used on the places approaching to the ground for protecting a dike, and the holes are arranged on the surface of the ecology retaining wall bricks. The riverbank vegetation buffering and purifying zone of the invention has advantages of big adaptation adaptive space, small land occupation, compact bank line arrangement, good landscape effect, mature technology and simple construction, and can not only satisfy the demand of water conservancy safety and landscape, bus also quicken establishment of a river ecology system, and improve and maintain water quality.

The invention relates to a method for ecological management of a hedgerow riverbank revetment. The method comprises the steps as follows: ecological gabion revetment grooving, gabion box laying, hedgerow shrub planting, pebble backfilling, shrub grafting and the like. According to the method, a method for fixing gabions through hedgerows formed with a coordinal plant grafting technology is fully used, the revetment is more stable in structure, the water erosion resistance of the revetment is enhanced, and meanwhile, riverbank buffer zones consisting of flooding-resistant shrubs, ground cover herbage and gabion filler can play an important role in filtering non-point source pollutants entering a water body; a richer habitat is provided for aquatic animals and plants by gap structures formed by ecological gabions, so that the stability of a river ecological system is maintained; and the landscape effect of the riverbank revetment can be further improved by planting of shrub vegetation.

The invention discloses a novel photovoltaic module. The photovoltaic module comprises a plurality of battery strings, each batter string comprises a plurality of battery pieces connected in series through welding strips, an overlapping region is arranged between each two adjacent battery pieces in the battery strings, and buffer strips are arranged at the positions, close to the overlapping regions and between the adjacent welding strips, of the battery pieces. The two ends of the buffer strips are connected with the welding strips, or there is a gap between the two ends of the buffer stripsand the welding strips. The widths of the overlapping regions are 0-2mm. There is no piece distance between the battery pieces to greatly utilize the module space and improve the module efficiency, the buffer strips arranged at the overlapping regions of the battery pieces are employed to increase the stress areas at the overlapping positions of the battery pieces, and the previous welding stripsbearing the laminating pressure is changed to increase the stress bearing by the whole overlapping regions and the buffer strips so as to greatly reduce the piece breakage rate and the EL hidden crackratio.

The invention discloses an ecological multidimensional retention system for rainwater drainage on a bank side of a river. A primary ecological buffer zone, a first-layer ecological retention system, a second-layer ecological retention system, a third-layer ecological retention system and a secondary ecological buffer zone are orderly arranged on the upstream side of a river embankment along the slope of the bank side; the three layers of ecological retention systems are in concentric semi-annular radial form and of ditch type structures; each ecological retention system is provided with a planting soil layer, a packing layer and a gravel layer, and plants good in stress resistance and prosperous in root system are planted on the ecological retention system; herbaceous plants are planted in the two ecological buffer zones. The ecological multidimensional retention system is capable of reducing the pollution load due to the fact that rainwater runoff is directly discharged into receiving water by use of the retention spaces; due to closure and adsorption by use of a filter material and purification of rainwater runoff pollution by use of the plant root system, partial heavy metal ions, pathogens and the like can be removed; the ecological multidimensional retention system is suitable for any rainwater volume and water quality and has a good landscape effect.

The invention discloses a treatment method for applying urban reclaimed water to landscape water. The method mainly comprises the following steps of: building an ecological precipitation pond and a facultative anaerobic deep water pond, constructing an ecological aeration dam, and building a submerged plant purification pond, an aquatic plant purification pond, and an artificial wetland buffer zone; and allowing the urban reclaimed water to sequentially flow through the ecological precipitation pond, the facultative anaerobic deep water pond, the ecological aeration dam, the submerged plant purification pond, the aquatic plant purification pond and the artificial wetland buffer zone to obtain the treated water which is used as the landscape water. According to the urban reclaimed water which is treated by the method, the transparency is more than 0.5m, and dissolved oxygen is more than 2mg / L, and floater and fishy odor are avoided; and the landscape water completely meets the B and C-class water-quality standard of the landscape and entertainment water which is allowed to be contacted.

The invention belongs to the field of ecological repairing of water environments in lake basins and particularly relates to a river channel structure capable of ecologically repairing a river flowing into a lake in lake basins. The river channel structure comprises a river channel base, a river channel bank slope and river channel buffering belts. A layer of vegetation form ecological blanket is laid on the river channel base. Aquatic plants are planted on a river channel bank slope. The river channel bank slope comprises a river channel revetment and a river channel land area side bank, wherein the river channel revetment is a step type revetment and sequentially comprises a first-step ecological embankment, a second-step ecological embankment, a third-step ecological embankment, a fourth-step ecological embankment and a fifth-step ecological embankment from bottom to top. Terrestrial plants and herbaceous plants which are reasonably matched are planted on the river channel buffering belts, and the river channel buffering belts include the first buffering belt, the second buffering belt and the third buffering belt. The river channel structure is simple in structure and low in construction cost, the ecological environment of the river flowing into the lake in the lake basins can be repaired, the water quality of the river is improved, the ecological system of the river is recovered, and the self-cleaning capability of the river is improved.

The invention relates to a head hoop for electroencephalographic biological signal collection. The head hoop can generate synchronous deformation along with the head size and shape of people and the contact pressure intensity, so that an electrode sensor arranged on the head hoop is enabled to maintain good contact with the head skin of a wearer; a high-quality electroencephalogram is obtained; meanwhile, the head of the wearer cannot generate obvious pressure or load bearing feeling. The head hoop comprises a support ring, a buffer strip, the electrode sensor, a communication circuit and a signal processing unit, wherein the support ring is in an arc shape; during the wearing, the shape of the support ring can be attached to the head of the wearer; the buffer string is fixed on the support ring; the electrode sensor is fixed on the buffer strip, is in contact with the head skin of people and is used for collecting a biological electric signal of the head of the wearer; the communication circuit is connected with the electrode sensor, and transmits the biological electric signal collected by the electrode sensor to the signal processing unit; the signal is processed by the signal processing unit.

The invention discloses a breakage-proof transporting trolley for an exterior wall tile. The transporting trolley comprises a transporting trolley body, buffer mechanisms and buffer strips, wherein a plurality of buffer mechanism are uniformly and vertically arranged on the transporting trolley body; a plurality of buffer strips are parallelly arranged on the transporting trolley body in a pavement manner; each exterior wall tile is positioned between every two adjacent buffer mechanisms; the lower part of each exterior wall tile is buffered and supported by the buffer strips. The transporting trolley disclosed by the invention has the advantages that a plurality of exterior wall tiles can be transported and moved within a short time; when the transporting trolley is in use, the effects of quickness and convenience are achieved, and the transporting time is greatly reduced; the rigid contact between the exterior wall tiles can be effectively prevented, and the exterior wall tiles can be effectively prevented from being broken and damaged due to buffer structures arranged on the transporting trolley at intervals; an adjustable handle can be adaptive to construction personnel with different heights, so that the effect of convenience in use is achieved; universal wheels are arranged, so that the propelling operation is conveniently performed, and time and labor are saved.

The invention discloses a multi-functional massage steel support, which belongs to lingerie accessories for women, and comprises a shape-cutting steel ring, a buffer strip, a bottom lining cloth strip and a surface lining cloth strip, wherein the section of the bottom lining cloth strip is approximately reverse I-shaped, and the section of the surface lining cloth strip is approximately in the shape of ohm; the edges of the bottom lining cloth strip and the surface lining cloth strip are mutually jointed, and the shape-cutting steel ring and the buffer strip are packaged by a cavity formed by the bottom lining cloth strip and the surface lining cloth strip by way of an enclosing mode; and the shape-cutting steel ring is arranged at one side of the bottom lining cloth strip, and the buffer strip is arranged at one side of the surface lining cloth strip. In the invention, the part supporting the breasts by using the shape-cutting steel ring is provided with the buffer strip and the lining cloth strips, thus greatly reducing the pressure of the shape-cutting steel ring on the chest and has a massage effect on the breast; the massage steel support of the invention is suitable for steel-ring bras or underwear with steel rings.

The invention provides a method for reducing slope cropland non-point source pollution by a biochar-improved ecological ridge, and relates to building of a telescoping ecological ridge based on ADP(NH4H2PO4) modified biochar. A layout method provided by the invention comprises the steps: firstly establishing ridges at a preset interval in a direction vertical to the slope surface of a slope cropland, wherein each ridge is formed by piling up soil mixed with biochar with a preset proportion and forms a buffer strip; forming drain holes with a preset number in each buffer strip, digging a deep pit at the rear end of each drain hole, and arranging a telescoping purification device in each deep pit, wherein each telescoping purification device is formed by combining three layers, i.e., stone strips, biochar strips and clay strips and forms a filter strip; establishing a drainage channel at the rear end of the last filter strip close to the base of a slope and connecting with a riverway, so as to form a complete ecological ridge layout. By adopting the method, the nutrient substance and water utilization efficiency of the existing slope cropland can be improved, and the problems that due to surface runoff and underflow, silt flows down and migrates, and pollution by heavy metal and organic pollutants occurs can be effectively prevented.

The invention relates to a durable solar power concentrating photovoltaic module which comprises a Fresnel lens group, side boards, a bottom board and a solar cell unit. Both the side boards and the bottom board are made by stamping, machining procedures are reduced, mounting and maintenance are facilitated, and production cost is lowered. Batch products are high in uniformity. A sealing silicone buffer strip is embedded between the Fresnel lens group and the upper ends of the side boards, and a breathable film component made on the silicone buffer strip maintains balance of inside and outside air pressures and prevents entry of foreign matters such as gas, liquid and solid. The novel solar power concentrating photovoltaic module is thermal-insulating, soundproof, waterproof, dustproof, highly reliable and durable.

The invention discloses a riverbank buffer zone shrub configuration for reducing nitrogen and phosphorus in urban water source areas in high cold regions. Riverbank land areas, which are 10m above the maximum water level of the river in the slopes on both sides of the main stream and primary and secondary tributaries in the water catchment area, are provided with riverbank buffer zone vegetation. The vegetation comprises one or more of Salix cheilophila, Caragana opulens and sea buckthorn, wherein the Salix cheilophila is arranged in the riverbank buffer zone of the 0-2-degree slope; the Caragana opulens is arranged in the riverbank buffer zone of the 2-5-degree slope; and the sea buckthorn is arranged in the riverbank buffer zone of the 5-15-degree slope. The configuration can effectively entrap nitrogen and phosphorus pollutants to improve the runoff water quality, can fully display the functions of the riverbank buffer zone on purifying the water and retaining the silt, has favorable use effect, and can satisfy the function demands for reducing overland runoff nitrogen and phosphorus pollutants of the riverbank buffer zone in urban water source areas in northwest high cold regions.

The invention relates to a coastal ecological buffer zone structure having a compounding effect. The coastal ecological buffer zone structure comprises an herbaceous permeation zone, a shrub and herbaceous plant purifying zone, an arbor-herbaceous plant purifying zone and a reed purifying zone which are sequentially arranged in the runoff direction of farmland, wherein the herbaceous permeation zone comprises a bottom bearing layer, a gravel filling zone, a soil planting zone and a water reserving zone which are sequentially arranged from bottom to top, shrubs and herbaceous plants are plantedin the shrub and herbaceous plant purifying zone, arbors and herbaceous plants are planted in the arbor-herbaceous plant purifying zone, and hygrophytes and herbaceous plants are planted in the reedpurifying zone. Compared with common buffer zones, the coastal ecological buffer zone structure having the compounding effect can achieve remarkable permeation, detention storage and farmland rainwater runoff purification and has the advantages of rainfall flood regulation and storage, water purification, landscaping, biodiversity protection, water and soil conservation, low investment and operation cost and the like.

The invention relates to a sector-shaped multi-dimensional cross-flow type composite terrestrial plant buffer zone and a construction method thereof. The buffer zone is formed by connecting a sector-shaped transverse-flow herb-biochar zone, a sector-shaped longitudinal-flow denitrification zone, a sector-shaped transverse-circular-flow pollutant enrichment shrub-herb zone, a sector-shaped longitudinal-flow dephosphorization zone, a sector-shaped transverse-circular-flow tree-herb-biochar zone as well as necessary ridges, braiding channels or water-permeable walls in series. Low-concentration wastewater such as tail water of urban sewage treatment plants, agricultural wastewater, surface runoff of villages and small towns and the like sequentially flows through the zones after simple sedimentation, and suspended matters, organic matters, nutrient elements, pesticides and the like in the wastewater are gradually reduced. The vegetation buffer zone is applicable to peripheries of reservoirs, rivers or lakes with limited shore land areas and can effectively prevent water environment pollution; native plants are combined harmoniously, so that the buffer zone has the good treatment effect as well as the good landscape effect, the good ecological benefit and high popularization and application values.

The invention relates to a shock absorption structure for battery installation of an unmanned aerial vehicle. The shock absorption structure for battery installation of the unmanned aerial vehicle comprises a box body and also comprises a cover body, wherein one end of the box body is opened, a line through hole is formed in a surface of the other end of the box body, a limitation block and a plurality of wavelike buffer strips are fixedly arranged on an inner wall of the box body, the cover body is matched with an opening and is rotatably connected with the box body, a plurality of buffer cushions are arranged on a lower surface of the cover body, a self-locking screw is arranged on the cover body, and a screw hole matched with the self-locking screw is formed in the box body. During application, a battery is installed along an opening position of the box body, a power line is connected out via the line through hole, the limitation block is simultaneously used for limiting a front end of the battery and is used as an insertion in-place signal, the buffer strips are deformed and press two sides of the battery, the cover body is tightly covered, the buffer cushions prop against a rear end of the battery, and thus, the situations of vibration and displacement generated in the battery are effectively reduced; and moreover, the shock absorption structure is very simple and convenient to install and is relatively light in weight, and the whole structure is simple and is low in cost.

The invention provides a heat shrinking technology for improving a membrane wavy edge. The heat shrinking technology includes the following steps that rewinding rollers are prepared, a plurality of shrinkable buffer strips are arranged on the outer surfaces of the rewinding rollers at equal intervals, and all the buffer strips and the rewinding rollers are parallel in the axial direction; 2, membranes are wound around to the rewinding rollers provided with the buffer strips; 3, the rewinding rollers wound with the membranes are baked at the certain temperature, and baking is kept for certain time; 4, the baked membranes are taken out and cooled at the normal temperature; 5,the surfaces of the cooled membranes are coated with slurry with the certain thickness. The heat shrinking technology and device have the advantages that the membranes are even accordingly, the poor waves are reduced after the membranes are coated, the over-specification radian and the over-specification size after the membranes are cut to small strips are decreased, the superior product rate of the membranes is increased, production resources are reasonably used, and waste is reduced.

The invention provides a rolling disc self-discharging type scrap iron vehicle, relates to the technical field of scrap iron vehicles, and aims to prolong the service life. The rolling disc self-discharging type scrap iron vehicle comprises a chassis with wheels and a moveable box body, wherein a left linear buffer guide rail and a right liner buffer guide rail which extend forwards and backwards are fixedly arranged at the upper end of the chassis; a plurality of buffer holes are formed in each buffer guide rail along the axis of the buffer guide rail; a left buffer board and a right buffer board are fixedly arranged at the bottom of the box body; the bottom edge of each buffer board is an arc-shaped edge with the arc center facing the box body; an arc-shaped buffer strip is fixedly arranged on each buffer board along the bottom edge of the buffer board; the arc-shaped buffer strips on the bottom edges of the two buffer boards are propped against the rail surfaces of the two buffer guide rails; and a plurality of semi-spherical bumps are formed on the arc-shaped buffer strips on the bottom edges of the two buffer boards, and the quantity and the positions of the semi-spherical bumps correspond to those of the buffer holes in the two buffer guide rails one to one. The scrap iron vehicle can effectively avoid unexpected discharging and has long service life.

The invention discloses a composite interception system for runoff contaminants in a coastal zone of rivers and lakes. The composite interception system includes: a vegetation buffer zone, an underground water collection trench and underground cleaning pools. One side of the vegetation buffer zone is connected to a pollutant converging zone while the other side is connected to the underground water collection trench; the underground cleaning pools are arranged under the underground water collection trench at interval. The vegetation buffer zone can reduce flowing speed of surface runoff and intercept mud and sand in the runoff and absorb and eliminate related pollutants. The underground water collection trench and underground cleaning pools can merge surface flow and in-soil flow, which flow out from the vegetation buffer zone, so that the runoff contaminants are adsorbed and converted again. Through multiple layers of composite interception, adsorption, conversion, absorption and thelike from the vegetation buffer zone to the underground cleaning pools, water flowing into rivers and lakes is effectively purified by combining the technologies of a vegetation filtering zone and water centralized treatment technology and combining surface runoff interception and underground percolation purification. The system effectively reduces width of the vegetation buffer zone and saves land resources, and improves landscape effect of the coastal zone.