42results about How to "Reduced Strength Needs" patented technology

The invention discloses a suspension type electric profiling flower and fruit thinning machine and a usage method thereof. According to the flower and fruit thinning machine, a moving frame is arranged on a suspending frame through a guide rail assembly, a pushing mechanism is arranged on the suspending frame and is connected with the moving frame, a profiling mechanism is arranged on the moving frame and is connected with a flower and fruit thinning mechanism, the flower and fruit thinning mechanism is connected with the moving frame through a rotating shaft, a detection rod assembly is arranged on one side of the flower and fruit thinning mechanism, and the pushing mechanism, the profiling mechanism, the flower and fruit thinning mechanism and the detection rod assembly are electrically connected with an electric profiling control device respectively. The usage method of the flower and fruit thinning machine comprises that the distance between a target fruit tree and a flower and fruit thinning adhesive tape group is adjusted through the pushing mechanism, an included angle formed by the flower and fruit thinning mechanism and a crown of the target fruit tree is adjusted through the profiling mechanism, and then the flower and fruit thinning operation is conducted. The profiling flower and fruit thinning operation can be conducted for fruit trees through suspending connection of the flower and fruit thinning machine and a tractor, the mechanical degree is high, and the working efficiency is high.

The invention discloses a double-liner concurrent vacuum plastic uptake molding machine. The machine includes a first feeding, aligning and preheating integrated device, a second feeding, aligning andpreheating integrated device, a first main heating device, a second main heating device, a first molding machine body, a second molding machine body, a discharging device, a bead cutter, a first punch press and a second punch press which are arranged in sequence, wherein the first punch press and the second punch press are arranged side by side; conveying chains are sequentially arranged in the first feeding, aligning and preheating integrated device, the second feeding, aligning and preheating integrated device, the first main heating device, the second main heating device, the first moldingmachine body, the second molding machine body and the discharging device; the discharging device is used for grasping products molded by the first molding machine body and / or the second molding machine body to the bead cutter, grasping products on the bead cutter to the first punch press and / or the second punch press and grasping products passing by the first punch press and / or the second punch press. The double-liner concurrent vacuum plastic uptake molding machine can achieve simultaneous processing of two kinds of products with different processing parameters on the same production line.

The invention discloses a suspension type hydraulic profiling flower and fruit thinning machine and a usage method thereof. According to the flower and fruit thinning machine, a moving frame is arranged on a suspending frame through a guide rail, a pushing hydraulic cylinder is arranged on the suspending frame and is connected with the moving frame, a profiling hydraulic cylinder is arranged on the moving frame and is connected with a flower and fruit thinning mechanism, the flower and fruit thinning mechanism is connected with the moving frame through a rotating shaft, a detection rod assembly is arranged on one side of the flower and fruit thinning mechanism, the pushing hydraulic cylinder, the profiling hydraulic cylinder and the flower and fruit thinning mechanism are connected with a hydraulic control device through oil pipes respectively, and the detection rod assembly is electrically connected with the hydraulic control device. The usage method of the flower and fruit thinning machine comprises that the distance between a target fruit tree and a flower and fruit thinning adhesive tape group is adjusted through the pushing hydraulic cylinder, an included angle formed by the flower and fruit thinning mechanism and a crown of the target fruit tree is adjusted through the profiling hydraulic cylinder, and then the flower and fruit thinning operation is conducted. The profiling flower and fruit thinning operation can be conducted for fruit trees through suspending connection of the flower and fruit thinning machine and a tractor, the mechanical degree is high, and the working efficiency is high.

The invention provides a splitting mechanism and excavating equipment. The splitting mechanism comprises a telescopic arm, a drilling part, a splitting part and a rotating part, wherein the drilling part is arranged on the telescopic arm; the splitting part is arranged on the telescopic arm, and the telescopic arm is used for driving the splitting part to perform reciprocating motion; and the rotating part is connected with the telescopic arm and used for driving the telescopic arm to rotate. After the drilling part is used for drilling by the splitting mechanism, the rotating part is used for driving the telescopic arm to rotate, the splitting part is enabled to be aligned to a drill hole, and rock is split from a rock stratum through a splitting mode on the basis of the hole formed after the drilling part operation. By arranging the splitting part, the drilling part and the splitting part can perform position conversion in short time, switch of drilling and splitting operation can be realized, so that the assembly precision of the splitting part relative to the hole is guaranteed, a reliable and accurate structural basis is provided for the splitting operation of the subsequent splitting part, thus, the construction efficiency is improved, and the purpose of efficient, safe and continuous hard rock excavation is realized.

The invention discloses a two-dimensional secondary unfolding solar wing which has a folding state, a primary unfolding state, a secondary unfolding state and a two-dimensional secondary unfolding state and comprises a root hinge, a connecting frame, an inner plate, a middle inner plate, a middle outer plate, an outer plate, an upper side plate, a lower side plate, a primary pressing and releasingdevice, a secondary pressing and releasing device and a side plate releasing device. The root hinge, the connecting frame, the inner plate, the middle inner plate, the middle outer plate and the outer plate are hinged in sequence; the root hinge is used for mounting the connecting frame on the side wall of a satellite body; an upper side plate and a lower side plate are hinged to the other two sides of the middle outer plate, and the upper side plate and the lower side plate are oppositely arranged when being unfolded; the primary pressing and releasing device and the secondary pressing and releasing device both have a pressing state and a releasing state. The solar wing can be unfolded step by step before and after orbital transfer of a satellite, the unfolding inertia of the solar wingduring orbital transfer of the satellite is reduced, and the strength requirement of the solar wing is reduced, so that the product quality is greatly reduced.

The invention provides a breeding feeding system matched with feed processing production. Natural feed feeding is introduced into a large-scale pig farm, the yield of high-quality pork is increased, and the system comprises a feed production mechanism, a feed feeding mechanism and a control mechanism. The feed production mechanism comprises M raw material storage bins, a mixing bin, a curing bin, an additive conveying mechanism and N insulation cans, each raw material storage bin is provided with a raw material emptying valve, the M raw material storage bins are communicated with the mixing bin through the raw material emptying valves, a mixture emptying valve is arranged on the mixing bin, the mixing bin is communicated with the curing bin through the mixture emptying valve, the additive conveying mechanism is communicated with the curing bin, and the curing bin is respectively communicated with the N insulation cans. The feed feeding mechanism comprises a feed conveying mechanism and K feed grooves. The feed conveying mechanism comprises N upper branch circuits and K lower branch circuits communicated with the K upper branch circuits. The N upper branch circuits are communicated with the N insulation cans in a one-to-one correspondence mode, and the K lower branch circuits are communicated with the K feed grooves in a one-to-one correspondence mode.

The invention discloses a pulse laser distance measurement method for parallel counting by multiple counters. A target distance is constant, so that a counted value of reflection pulses is constant; however, interference pulses are random, so that a counted value corresponding to each interference pulse is completely different; and after frequent measurement is performed, an accurate value of a measured target can be obtained through mathematical statistic analysis. By the method, the interference pulses can be effectively eliminated, and threshold voltage of echo signals can be reduced, so that the requirement on the strength of the echo signals is reduced, the measured distance is increased, and the distance measurement accuracy is improved. The invention also discloses a handheld pulse laser distance measurer applying the method. The handheld pulse laser distance measurer is manufactured based on the distance measurement method; the measured target is subjected to frequent emission pulse distance measurement, and the accurate value of the measured target can be obtained through the mathematical statistic analysis. The distance measurer can reduce the threshold voltage of the echo signal, the measured distance can be increased, and the distance measurement accuracy is improved.

The invention discloses a cross laminated timber (CLT) decorating plate and a connecting device thereof, and belongs to the field of building materials. The CLT decorating plate comprises a first decorating layer, a buffer layer, a CLT layer and a second decorating layer, wherein the first decorating layer, the buffer layer, the CLT layer and the second decorating layer are sequentially arranged from top to bottom, and a non-Newtonian fluid is arranged in the buffer layer. The invention further provides a connecting device. The connecting device comprises a supporting body and connecting blocks arranged on the supporting body, the supporting body is of a cuboid structure, the cross section of the supporting body is in a square shape, and the side length of the square-shaped cross section is the same as the thickness of the decorating plate; and the connecting blocks are matched with connecting grooves. According to the CLT decorating plate, the decorative effect can be improved, when the CLT decorating plate is impacted, the impact force can be dispersed to the whole CLP plate, and the uniform distribution damage of the CLT plate caused by single-point stress is avoided. Accordingto the connecting device, the connecting stress of the CLT plate can be partly transferred to the connecting device, and the intensity requirement on the CLT plate is reduced depending on the structure intensity of the connecting device.

The invention discloses a pulsed electromagnetic shearing method and device.The method comprises the steps that a metal workpiece is placed between an upper blade and a lower blade, pulsed electromagnetic force is taken as driving force to drive the upper blade to move towards the lower blade, and the upper blade and the lower blade cooperate with each other to complete metal workpiece shearing.The device comprises the upper blade, the lower blade and a pulsed magnetic force generating mechanism, the lower blade is used for containing the metal workpiece, the pulsed magnetic force generating mechanism is used for generating the pulsed electromagnetic force, the pulsed electromagnetic force is taken as the driving force to drive the upper blade to move towards the lower blade, and the upper blade and the lower blade cooperate with each other to complete metal workpiece shearing.According to the pulsed electromagnetic shearing method and device, the electromagnetic cutting application field is expanded, the phenomenon that the defects such as turned edges, deckle edges and wrinkles are generated after workpiece shearing is completed is effectively prevented, and the requirement for the mechanical support structure strength can be effectively lowered.

The invention discloses a rotation disc-type motor structure. The rotation disc-type motor structure comprises a fusion-type rotation shaft structure (I), an integrated enclose mechanism (II) and a support bearing (102) and is characterized in that the fusion-type rotation shaft structure (I) is in a way that an inner end part of each phase winding (105-107) is connected with a shaft outer brush sliding ring (109, 113) through a rotation shaft groove passage (110-112), meanwhile, the fusion-type rotation shaft structure (I) is contained in the integrated enclosure structure (II) and is supported by the support bearing (102), and the integrated enclosure structure (II) is in a way that an outer end part of the permanent magnet (202) is connected with an enclosure (201). The fusion-type rotation shaft structure (I) and the integrated enclosure structure (II) are driven to move towards an opposite direction by an electromagnetic force generated by a mutual effect of the fusion-type rotation shaft structure (I) and the permanent magnet of the integrated enclosure structure (II), the opposite rotation function of the disc-type motor is achieved, and bidirectional power output can be achieved; and moreover, the rotation disc-type motor structure has higher opposite rotational speed, the power density the motor is easily improved, dispersed power output can be achieved, the strength demand of the rotation shaft is reduced, and the universality of the motor is improved.

The invention discloses a flexible support photovoltaic tracking support with a self-locking function. The flexible support photovoltaic tracking support comprises a photovoltaic module support frameused for fixing a photovoltaic module, a stand column used for supporting the photovoltaic module support frame, a transfer unit installed on the stand column, and a driving unit used for driving thetransfer unit to work. The transfer unit comprises a steel cable, a cable clamp, a differential winding wheel and a transmission case; the driving unit comprises a driving shaft and a drive and control device; and a self-locking structure is arranged between the driving shaft and the transmission case. Through multipoint cooperative driving, a driving load is uniformly applied to the tracking support to greatly reduce the torsional deformation of the whole structure, so that the tracking accuracy of the tracking support and the power generation efficiency of the photovoltaic module can be ensured; by adopting multi-point effective support, the vibration response of the structure under the action of wind load can be effectively reduced, and the safety and reliability of the tracking bracketare improved; and moreover, the position of each driving node is self-locked, so that the integral rigidity of the support structure and the stability and reliability of structure locking can be effectively improved.

The invention belongs to the field of comprehensive utilization of solid wastes, and particularly relates to a liquified consolidation material and a preparation method thereof. Solid wastes in industry, mining and construction industries as raw materials, a low-activity composite cementing material, a filling material, pulping liquid and an additive are prepared into a vibration liquefied consolidation material which is uniform in macrocosmic and microcosmic, large in flow state and capable of being pumped through a vibration stirring process. The liquified consolidation material has the advantages of being high in mobility, free of backfilling dead corners, self-hardening, free of vibration during forming, high in strength, anti-seepage, anti-seismic, stable in size, environmentally friendly and the like, is suitable for backfilling of fertilizer grooves, pipe culverts, cavities and abutment backs, reinforcing of building foundations, filling of road roadbeds, reinforcing and seepage prevention of river channels, lakes and coastline embankments and the like, and solves the problems that the space is narrow, tamping of special-shaped end faces is uneven, non-excavation cavity backfilling is not in place, and traditional stirring equipment for the flow-state solidified soil is not uniform in stirring.

The invention belongs to the technical field of wastewater treatment and particularly relates to a device and method for treating activated sludge wastewater. The wastewater treatment device comprises a tank body, wherein the tank body comprises an aeration zone which is located in the center of the tank body and formed by an enclosure and a sedimentation zone located at the periphery of the aeration zone, and water-flowing cross sections for communicating the aeration zone and the sedimentation zone are arranged between the bottom of the enclosure and the bottom of the tank body. By the device and method for treating activated sludge wastewater, disclosed by the invention, two basic steps (aeration and sedimentation) of the method for treating activated sludge wastewater are combined and then simultaneously completed in the tank body, so that a large amount of civil engineering structures are decreased, the requirement on the strength of a majority of structures is reduced, the cost in civil engineering structures is significantly decreased, in addition, the cost in purchase and installation of equipment is decreased, and the operation cost is also reduced; and furthermore, since the aeration and sedimentation can be simultaneously performed, the operation efficiency is increased.

The invention discloses a supporting structure of an electric aircraft power battery system. The supporting structure comprises a longitudinal beam, a supporting rod, a first connector and a second connector, wherein the longitudinal beam is located on one side of a power battery system and fixed to a fuselage of the electric aircraft, the first connector is arranged on the power battery system and used for being connected with a first end of the supporting rod, the second connector is arranged at an end, away from the power battery system, of the longitudinal beam and used for connecting thesecond end of the supporting rod. The supporting structure of the electric aircraft power battery system is advantaged in that the forward load of a power battery system mounting platform is shared, the strength requirement of a fuselage frame structure is reduced, so the weight of the fuselage frame structure is reduced, and economy and safety of the aircraft structure are improved.

The invention discloses an active packer. The active packer comprises a sleeve, a steel pipe column is arranged in the sleeve, a composite barrel is arranged between the sleeve and the steel pipe column, a high-strength connecting layer is arranged on one side of the composite barrel, a low-strength connecting layer is arranged at one end of the high-strength connecting layer, a double-T-head back attaching layer is arranged on one side of the high-strength connecting layer, a pressing plate is arranged at one end of the double-T-head back pasting layer, a pressing device is arranged on one side of the pressing plate, a bolt extending into the pressing plate is arranged on one side of the pressing device, an air nozzle extending to the outer side of the sleeve is arranged on one side of the composite barrel, and a flexible inner barrel is arranged in the composite barrel. According to the active packer, by arranging the flexible inner cylinder, the framework layer, the outer protection layer, the high-strength connecting layer, the low-strength connecting layer and the back pasting layer, the active packer can provide supporting force far larger than the gravity of cement paste, and the sealing capacity and the damage resistance of the packer are improved.

The invention relates to the technical field of energy storage devices, in particular to a battery pack, which comprises: a battery box body, which comprises a frame and a liquid cooling plate; wherein the frame comprises an edge beam and a mounting beam connected to the edge beam, and the liquid cooling plate is connected to the edge beam and the mounting beam; battery units mounted on the edge beams and / or the mounting beams, wherein the battery units are also supported on the liquid cooling plate. In the battery pack provided by the invention, the weight supporting points of the battery units are positioned on the edge beams and the mounting beams connected to the edge beams, so that excessive pressure cannot be formed on the liquid cooling plate at the bottom, the strength requirement on the liquid cooling plate is reduced, the liquid cooling plate can be designed to be lighter, and the purpose of weight reduction is achieved; therefore, the energy density of the battery pack is improved.

The invention discloses a small rainproof wind power generation device, which comprises a fan frame and a small generator. The fan is installed above the small generator. There are several doors, each door is equipped with fan blades, and the fan blades on each door are hinged with the doors and open in the same direction; the fan frame is provided with a top cover, and the top cover is provided with concave and convex surfaces , the concave surface is located at the top, the convex surface is located at the bottom, and the top cover is detachably connected with the fan frame; the beneficial effects of the present invention are: reasonable design, simple structure, small generator, small occupied land area, and through the fan on the door. The hinged setting between the leaves and the door can reduce the demand for wind strength. Even a low-intensity wind can make the fan frame rotate, and the fan frame is provided with a top cover to prevent rainwater from splashing on the main shaft and the fan frame. On the door, it can prevent rust and corrosion and increase the service life.

The invention relates to a multi-shaft variable-speed thermal washing module and a thermal washing method thereof.The multi-shaft variable-speed thermal washing module comprises a storage assembly and a dehydration assembly and further comprises one or more multi-shaft variable-speed thermal washing machines, and the multi-shaft variable-speed thermal washing machines are connected with the storage assembly and the dehydration assembly. Batch materials are stored in the storage assembly, the materials are put into one or more multi-shaft variable-speed thermal washing machines from the storage assembly during washing, medicament water is added, the multi-shaft variable-speed thermal washing machines replace the functions of thermal washing machines, screws and friction machines, mechanical friction to the materials is large during washing, and the washing effect is greatly improved. The materials which are subjected to thermal washing through the multi-shaft variable-speed thermal washing machine are conveyed into the dewatering assembly to be dewatered, so that separation of washing water and the materials is achieved. According to the multi-shaft variable-speed hot washing module, the equipment investment and the occupied area investment are reduced, meanwhile, the hot washing efficiency is improved, the whole technological process is reasonable, compact and simplified, and the multi-shaft variable-speed hot washing module has great economic popularization value.

The invention discloses a clutch system and a clutch separation bearing assembly. The clutch separation bearing assembly comprises a separation bearing, a fixed block part and an elastic part; the separation bearing is provided with an inner ring and an outer ring which are coaxially arranged, one of the inner ring and the outer ring is a rotatable ring, the other of the inner ring and the outer ring is a non-rotation ring, and the non-rotation ring is provided with a first protruding portion which inwards protrudes in the radial direction; the fixed stop part is arranged on the side, away from a clutch, of the first protruding portion in the axial direction and axially abuts against the first protruding portion; the elastic part is used for providing axial elastic force so as to enable the first protruding portion to abut against the stop part; the first protruding portion abuts against the stop part in an anti-friction manner. Compared with the prior art, the assembly has the beneficial effects that automatic centre changing of the separation bearing becomes easy, the NVH performance of an automobile is improved, and the service life of the separation bearing and the service life of the stop part are long.

The invention relates to the technical field of mechanical equipment, in particular to crushing equipment for coal mining, which is capable of effectively improving the diversity of equipment functions by crushing coal, conveniently performing diversified crushing treatment on the coal, improving the crushing effect of the coal and conveniently enabling the shape of the coal to meet the specified requirement. Meanwhile, the coal is subjected to multi-section crushing treatment, the strength requirement of the coal on equipment can be effectively reduced, the equipment can be conveniently protected, the service life of the equipment is prolonged, and practicability and reliability are improved; the crushing device comprises a crushing barrel, four groups of supporting legs, a lining, an extrusion conical barrel, an extrusion disc and a circular fixed barrel, an opening of the crushing barrel faces upwards, the bottom of the crushing barrel is an inclined surface, the four groups of supporting legs are fixed at the bottom of the crushing barrel, the lining is mounted on the inner wall of the crushing barrel, the top of the lining is a funnel-shaped inclined surface, and the middle of the inner wall of the lining is a conical surface.

The present invention provides an externally driven marine propulsion system, comprising a main engine shaft part enclosed inside a hull, and a propeller part installed at the bottom of the hull and outside the hull, wherein the main engine shaft part comprises an engine; a rotating main shaft is fixed on the engine rotating shaft, and a driving gear is arranged on the rotating main shaft; the propeller part is provided with an annular pipe housing enclosing the propeller; an opening is arranged in the pipe housing; a support seat is arranged at the opening for fixing the driving gear; a propeller pipe bearing is fixed on the inner ring of the pipe housing; the inner ring of the propeller pipe bearing is provided with a propeller pipe; the inner ring of the propeller pipe is uniformly fixedly provided with a plurality of propeller blades; and the outer ring of the propeller pipe is fixedly provided with an outer gear of the propeller pipe; and the outer gear of the propeller pipe is meshed with the driving gear. The propulsion system provided by the invention has excellent hydrodynamic performance and greatly improves flexibility.

The invention relates to the technical field of foundation pit construction, in particular to comprehensive prevention and control of a foundation pit construction environment, and discloses an intelligent two-way traction dust falling curtain net system for large-span foundation pit construction. The system comprises a plurality of groups of supporting structures; each supporting structure comprises a local side supporting unit and an opposite side supporting unit; a direction pulling cable is arranged between the local side supporting unit and the opposite side supporting unit; a protective curtain is arranged on the direction pulling cable; the protection system further comprises a two-way traction mechanism; the two-way traction mechanism comprises a driving traction cable connected and matched with the protection curtain; and the driving traction cable pulls the protective curtain to the middle of a foundation pit or the edge of the foundation pit at the same time. A two-way traction structure is adopted, so that curtain net protection of a large-span foundation pit can be achieved, the requirement for the strength of the protective curtain is lowered, the efficiency of curtain net protection operation is further improved, curtain net protection is opened and closed through automatic and intelligent operation, and treatment of the construction environment at the foundation pit is greatly facilitated.

The invention relates to the technical field of mechanical equipment, in particular to bidirectional impact crushing equipment for coal mining, which can be used for crushing coal, can be used for conveniently and continuously crushing the coal in the equipment for multiple times, is convenient for gradually reducing the shape of the coal, effectively reduces the requirement of coal crushing work on the equipment strength and improves the working efficiency. Equipment is conveniently protected, the service life of the equipment is prolonged, meanwhile, the functional diversity of the equipment is improved, the coal crushing effect is improved, and practicability and reliability are improved; comprising a working bin, a first rotating shaft and a rotating cylinder, a top opening and a bottom opening of the working bin face the upper right portion and the lower right portion respectively, the upper left side, the lower left side and the upper right side of the working bin are arc-shaped, the lower right side of the working bin is an inclined face, and the first rotating shaft is longitudinally and rotatably installed on the upper side in the working bin and corresponds to the opening in the upper side of the working bin in position; and a plurality of groups of choppers are uniformly arranged on the outer wall of the first rotating shaft.

The invention discloses an annular combustion chamber model with an integrated head structure and an assembly method. The combustion chamber model comprises a combustion chamber outer casing, a combustion chamber inner casing, a flame tube outer casing, a flame tube inner casing and a flame tube head. The structural characteristics of engine parts are obvious, and low-cost split printing and combined structures of the flame tube head are achieved on the premise that the requirement for high fineness is met; production and manufacturing are achieved, meanwhile, specific structural features are reserved, the assembly difficulty of a user is simplified, and the problems that a traditional low-cost aero-engine combustion chamber model is too few in details, cannot meet teaching requirements, is too small in size and is difficult to display are solved.

The invention discloses a suspension type electric profiling flower and fruit thinning machine and a usage method thereof. According to the flower and fruit thinning machine, a moving frame is arranged on a suspending frame through a guide rail assembly, a pushing mechanism is arranged on the suspending frame and is connected with the moving frame, a profiling mechanism is arranged on the moving frame and is connected with a flower and fruit thinning mechanism, the flower and fruit thinning mechanism is connected with the moving frame through a rotating shaft, a detection rod assembly is arranged on one side of the flower and fruit thinning mechanism, and the pushing mechanism, the profiling mechanism, the flower and fruit thinning mechanism and the detection rod assembly are electrically connected with an electric profiling control device respectively. The usage method of the flower and fruit thinning machine comprises that the distance between a target fruit tree and a flower and fruit thinning adhesive tape group is adjusted through the pushing mechanism, an included angle formed by the flower and fruit thinning mechanism and a crown of the target fruit tree is adjusted through the profiling mechanism, and then the flower and fruit thinning operation is conducted. The profiling flower and fruit thinning operation can be conducted for fruit trees through suspending connection of the flower and fruit thinning machine and a tractor, the mechanical degree is high, and the working efficiency is high.

The invention provides a mechanical stirring and clarifying tank with novel oblique pipe support frames. The mechanical stirring and clarifying tank comprises a clarifying tank, oblique pipes fully arranged in the clarifying tank and oblique pipe support frames used for supporting the oblique pipes, wherein each oblique pipe support frame comprises a support frame, a main cross beam, a secondary cross beam, an edge sealing beam and grid cover plates; the support frames are triangular frames used for supporting the oblique pipes in the vertical direction; each support frame comprises a horizontal beam, a diagonal bracing, a vertical web member and a diagonal web member; a plurality of support frames are uniformly distributed at the periphery of the clarifying tank and are arranged along a radial direction; the main cross beams, the secondary cross beams and the edge sealing beams are connected between adjacent support frames along the periphery of the clarifying tank at the bottoms of the oblique pipes; large cover plates with uniformly-distributed grids are paved among two adjacent horizontal beams, the main cross beams and the wall of the clarifying tank; small cover plates with uniformly-distributed grids are paved among two adjacent horizontal beams, the main cross beams and the edge sealing beams; the edge of each cover plate is enclosed by a cover plate frame. The supportframes can meet the restricted condition that the support frames are only fixed on single side of the stirring and clarifying tank and also can simultaneously stably support the oblique pipes and ensure smooth flowing of the water flow and the precipitates; the materials are saved, and the safety is ensured.

The invention relates to the technical field of foundation pit construction, in particular to comprehensive prevention and control of foundation pit construction environments, and discloses an intelligent bidirectional traction dust falling curtain net driving mechanism for large-span foundation pit construction. The mechanism comprises multiple supporting structures oppositely arranged on the two sides of a foundation pit; each supporting structure comprises a local-side supporting unit and an opposite-side supporting unit which are correspondingly matched; a direction traction cable is arranged between each local-side supporting unit and the corresponding opposite-side supporting unit; a protection system further comprises a bidirectional traction mechanism; a driving traction cable is a circulating cable connected end to end, and the driving traction cable comprises bidirectional traction sections which are parallel to a protection curtain and are opposite in driving direction. The bidirectional traction structure is adopted, curtain net protection of the large-span foundation pit can be achieved, the requirement for the strength of the protection curtain is lowered, the efficiency of curtain net protection operation is further improved, curtain net protection is started and stopped through automatic and intelligent operation, and treatment of the construction environment at the foundation pit is greatly facilitated.