46 results about "Wing wall" patented technology

The invention provides a wing panel stringer skin accurate butt joint device and a use method. According to the method, the actual space pose of the skin is determined through a composite skin forming mold, and then the theoretical space pose of the stringer is calculated; space attitude adjustment is conducted on the stringers to be in butt joint through the numerical control attitude adjusting and positioning structure, the stringer accurate positioning device grabs and positions the stringers and accurately moves the stringers in the X direction and the Y direction, finally the stringers are accurately positioned and pressed on the composite material skin, and accurate butt joint of the stringers and the skin of the composite material wing wall plate is achieved.

The invention discloses a fish luring device for a fishway entrance, comprising two wing walls fixedly arranged in a river channel for forming a fishway, fixed plates are provided at the fishway entrances of the two wing walls, a frame is fixed at one of the wing walls, a plurality of rotating columns are rotatably connected to the inner side of the frame, a front plate is provided on the outer side of the rotating column, an inner shaft is rotatably connected to the inner side of the rotating column, a pressure plate is fixed on both sides of the inner shaft, a plurality of groups of openings are provided on the inner side of the rotating column, a plurality of groups of sliding columns matching the openings are fixed on both sides of the pressure plate, and a second spring is sleeved on the outer side of the sliding column between the openings and the pressure plate, a first rack is slidably connected to the top of the frame, a tooth pattern that meshes with the first rack is provided on the outer top of the inner shaft, an extrusion cylinder is provided on the side of the fixed plate close to the frame, a first spring is provided inside the extrusion cylinder, the interior of the extrusion cylinder is connected to one end of a pipe, and one end of the first rack is slidably matched with the inner wall of the other end of the pipe through a piston; the invention provides a water flow rate in a stable range for the fishway entrance.

The invention belongs to the technical field of aviation assembly, and relates to an automatic feeding hole drilling device and method for wing butt joint area wall plate connection. Comprising a drill plate, a bushing, a threaded positioning pin, a clamping crank and a fastening nut, a plurality of cylindrical supports are arranged on the side, close to a wing, of the drill plate, the cylindrical supports are consistent with a wing wall plate in appearance, a guide hole is formed in the drill plate, the hole position axis of the guide hole is consistent with the hole position axis of a high-lock bolt of the wing wall plate, and a flange structure is arranged on the upper surface of the lining. Parallel open grooves are formed in the two sides of the flange structure respectively, and a lining is assembled in the guide hole and supported on the drill plate through the flange structure; the threaded positioning pin penetrates through the guide hole and is fastened by a fastening nut; in the drilling process, the clamping crank is clamped on the open groove of the flange structure, and the bush is prevented from rotating. The problem that a traditional drill jig is not attached to the appearance of an aircraft panel due to the fact that the appearance is prone to deformation during machining is effectively solved.

The utility model discloses an anti-scour stable structure of a spill type floodway, which comprises two bilaterally symmetrical flow guide wing walls arranged along the downstream surface of a retaining dam, and a protective layer cloth liner positioned between the two flow guide wing walls is paved on the downstream surface of the retaining dam. The emergency flexible spillway is ensured to be capable of defending the impact effect of overflowing and draining flood on the diversion wing wall and the bottoming protective layer cloth liner, so that the overflow and flood discharge of a reservoir can be safely and smoothly completed.

The utility model discloses an overflow type flexible floodway flood discharge energy dissipation structure which comprises a protective layer cloth liner laid on the downstream face of a water retaining dam, the left side and the right side of the protective layer cloth liner are each provided with a flow guide wing wall fixed to the downstream face of the water retaining dam, and a plurality of water stopping energy dissipation ridges are evenly arranged between the two flow guide wing walls at intervals from top to bottom. And anti-impact gabion net gabions filled with ripraps are arranged at the lower ports of the two flow guide wing walls. The water retaining dam is convenient to install, low in construction cost and high in reliability, and in the flood discharge process of flood prevention and control of small and medium-sized reservoirs, the flood discharge speed is reduced, and damage to the dam body of the water retaining dam is avoided.

The invention relates to an inclined shaft tunnel opening type tunnel portal excavation arrangement structure and a construction method.The arrangement structure comprises an upward slope and a rigid built-in soil retaining structure, the upward slope is arranged at an inclined shaft tunnel opening in the axis direction of the tunnel, and tunnel portal wall excavation embedded steps are formed in the range of covering layer side slopes on the two sides of the inclined shaft tunnel opening in a step-by-step excavation mode; a tunnel door wall bottom cushion layer is arranged at the bottom of the wall excavation embedded step, a step type tunnel door wall is poured on the tunnel door wall bottom cushion layer, the step type tunnel door wall is embedded into the upward slope, and a rigid embedded soil retaining structure is formed; a concrete cover arch is arranged at the top of an inclined shaft opening, the concrete cover arch extends inwards and is in transition connection with an inclined shaft open cut tunnel lining, a steel arch frame is arranged between the concrete cover arch and the inclined shaft open cut tunnel lining, and the whole structure is closed through longitudinal connecting ribs of the steel arch frame. Compared with a common bamboo cutting type tunnel portal and a wing wall type tunnel portal, the tunnel portal walls of the notch type tunnel portal are embedded into the covering layer slopes on the two sides, and the soil retaining capacity of the covering layer tunnel portal walls and the stability of the slope entering the tunnel portal are effectively improved.

The invention relates to the technical field of water conservancy projects, and discloses a drainage system for lowering the underground water level behind a water gate wing wall. The drainage system for lowering the underground water level behind the water gate wing wall comprises a water lowering assembly and a drainage assembly. The dewatering assembly is arranged behind the water gate wing wall and comprises a bottom filtering seepage layer, a flow guide drainage layer and a top filtering seepage layer which are sequentially arranged from bottom to top. One end of the drainage assembly is arranged on the diversion drainage layer, and the other end is connected with a drainage hole in the water gate wing wall body. According to the drainage system for reducing the underground water level behind the water gate wing wall, the water lowering assembly is arranged to filter and converge underground water, then the underground water is conveyed to the drainage hole through the drainage assembly arranged on the flow guide drainage layer and is drained from the back of the water gate wing wall, and therefore the drainage system has the good underground water converging effect; underground water can be rapidly drained, and the underground water level is lowered.

The utility model discloses a water conservancy project flood discharge facility, which relates to the technical field of water conservancy projects, and comprises an upstream wing wall, a cleaning mechanism is arranged in the upstream wing wall and is used for cleaning garbage and branches blocked by flood discharge, and the cleaning mechanism comprises a lifting unit; the intercepting unit comprises a fixing plate, a plurality of hook rods are fixedly installed on the front side of the fixing plate, and protection rods are fixedly installed on the left side and the right side of the fixing plate; the chain drives the fixed block to move, the fixed block drives the pulley seat and the limiting pulley to move synchronously, the limiting pulley moves along with the track of the limiting strip, and the pulley seat drives the lifting plate to move synchronously. And when the lifting plate drives the hook rod to move synchronously through the connecting frame and the fixing plate, garbage and branches on the water surface enter the hook rod to lift the garbage and the branches out, so that the situation that the garbage and the branches are excessively accumulated on the front side of the dirt blocking grating, consequently, the dirt blocking grating is blocked, and the water flow passing ability is affected is avoided.

The application discloses a warehouse wall, wing wall and pull beam integrated forming slipform device and method of rectangular warehouse, which comprises a template system, a hydraulic lifting system, an operation platform system, an open letter frame, an independent steel pipe support system and a pull beam main reinforcement temporary suspension system, the hydraulic lifting system comprises a support rod, a jack and a hydraulic control cabinet, the operation platform system comprises a cantilever support and an operation platform plate, the independent steel pipe support system comprises two steel pipe support frames, the pull beam main reinforcement temporary suspension system comprises a plurality of lifting eyes, the open letter frame is fixed on the warehouse wall template and the pull beam template respectively, and the pull beam main reinforcement is suspended and bound below the lifting eyes. The device can complete the integrated forming pouring of the warehouse wall, the wing wall and the pull beam, the method fills the gap of the construction technology of the integrated forming of the warehouse wall, the wing wall and the pull beam under the slipform, and fundamentally solves the problems of poor structural integrity, easy cracking and leakage, insufficient air tightness, unreliable prestressed nodes and low construction efficiency caused by secondary pouring.

The utility model provides a gypsum board ceiling anti -cracking section bar relates to gypsum board ceiling technical field, including first section bar and second section bar, first section bar includes first seam wall, first slip wall to the joint side extension and first wing wall, and first wing wall is used for connecting first gypsum board, second section bar includes second seam wall, second slip wall to the joint side extension and second wing wall, and second wing wall is connected with the second gypsum board adjacent to first gypsum board, second slip wall and first slip wall horizontal sliding fit, first seam wall and second seam wall are provided opposite, and the area of first seam wall and second seam wall opposite forms the process seam, and the process seam top is closed, and the bottom is open, can adapt to standard seam, micro -slit and seamless decoration effect, when the gypsum board produces thermal expansion and cold shrinkage deformation because of temperature change, the stress is released through the slip wall sliding, and the whole structure stability is ensured through the wing wall and the rigid connection of gypsum board, and has deformation adaptation ability and decoration integrity.

This property is a five-story house. The front of the house has balconies from the second to the fifth floor. The left side of each balcony is covered by a wing wall that runs along the left edge of the front exterior wall and extends from the first to the fifth floor. Furthermore, a handrail wall is provided on the right side of the balcony beyond the portion covered by the wing wall.

The application relates to the technical field of bridge and culvert construction, and discloses a bridge and culvert lengthening side line protection structure and a construction method, which comprises an existing box-type bridge wing wall, the roadbed soil side of the existing box-type bridge wing wall 1 is provided with an advanced small guide pipe, an installation groove is arranged on the existing box-type bridge wing wall, a corrugated steel plate retaining wall is fixedly installed in the installation groove, a plugging steel plate is fixedly connected to one end of the bottom of the installation groove, and the plugging steel plate and the bottom of the installation groove jointly form an anchoring cavity; the seamless line does not need to be cut, the corrugated steel plate retaining wall is used to replace the existing wing wall part cut by a rope saw, the effective support of the roadbed filling is realized, the support of the roadbed soil free surface formed after the existing wing wall is cut is realized, the construction safety of the lengthened box-type bridge and the operation safety of the line are ensured, the operation of the existing line is not affected, and the defects of long construction period, large investment and speed limit operation requirement of the existing line are overcome.

This utility model relates to the field of crash barrier technology, and more particularly to a universal transition section wingless guardrail, comprising: a slope; posts installed on the slope; a three-wave plate installed parallel to the length of the slope via the posts; a friction beam installed between the slope and the three-wave plate along the length of the slope and fixedly connected to the three-wave plate; a concrete guardrail installed at the end of the slope near the three-wave plate along the length of the slope and fixedly connected to the three-wave plate and the friction beam respectively; a reinforcement component installed along the length of the three-wave plate, conforming to the outline of the three-wave plate, fixedly connected at one end to the posts and at the other end to the concrete guardrail; and a crash beam fixedly installed at the top of the concrete guardrail along the length of the concrete guardrail. This invention effectively optimizes the guardrail structure, improves protective strength, and reduces costs.

The present invention provides a method for reinforcing the intermediate nodes of reinforced concrete frame beams and columns by adding wing walls. The method comprises the following steps: determining the failure mode of the reinforced concrete frame and whether reinforcement is required; if the node is determined to require earthquake-resistant reinforcement; taking the bending strength of the node as a goal to be greater than the bending strength of the beam, calculating the reinforcement requirement of the node; determining the parameters for adding wing walls according to the reinforcement requirement of the node, thereby reinforcing the intermediate nodes of the reinforced concrete frame beams and columns. The method solves the problem that the material and geometric parameters of the wing walls cannot be quantitatively designed when the intermediate nodes of the beams and columns of the reinforced concrete frame are reinforced by adding wing walls in engineering. The method realizes the determination of whether the existing structure needs reinforcement; and for the structure determined to need reinforcement, quantitatively calculating the reinforcement requirement, thereby determining the concrete strength of the wing walls, the reinforcement of the wing walls, the number of embedded bars, and the size of the wing walls.

This invention relates to the field of soil and water conservation technology, and provides a portable gully retainer and its deployment method for shallow gully management. The portable gully retainer includes a transverse retaining wall, a stilling basin, and protective wing walls. The transverse retaining wall is positioned horizontally along the width of the shallow gully and has an overflow outlet. The stilling basin is located downstream of the transverse retaining wall, with a gradient arrangement between the stilling basin and the overflow outlet. The protective wing walls are located at the end of the stilling basin furthest from the transverse retaining wall, and are angled to the flow direction of the shallow gully. The transverse retaining wall, stilling basin, and protective wing walls are connected to form a turbulent flow channel, which slows down the water flow velocity and controls the flow direction within the shallow gully. This invention effectively intercepts sediment, controls gully slope expansion and gully bottom erosion, is easy to assemble and disassemble, is reusable, and its deployment location and insertion depth can be dynamically adjusted according to the sediment deposition depth without affecting mechanized farming, fundamentally solving the problem of shallow gully management in black soil areas.

Bridge abutment (10), in particular concrete bridge abutment, for receiving a bridge element, comprising: an abutment wall (12) which has several abutment wall elements (16) arranged side by side, wherein each abutment wall element (16) is designed as a precast concrete element (16'), and at least one wing wall (14) which has at least one wing wall element (18) designed as a precast concrete element (18'), characterized in that each of the abutment wall elements (16) extends over the entire wall height (hW) of the abutment wall (12).

The utility model belongs to the technical field of aircraft structure components, and relates to aircraft wing wallboard forming equipment with a reinforcing rib structure. The wing wall plate comprises a wing wall plate main body, the wing wall plate main body is provided with a buckle connecting piece and a screw joint fixing piece, a wall plate positioning part and an installation alignment part are arranged in the wing wall plate main body, the wall plate positioning part and the installation alignment part are arranged in a staggered mode, and a splayed reinforcing rib assembly is arranged at the bottom of the wing wall plate main body. And the wall plate positioning part and the mounting alignment part are respectively staggered with the splayed reinforcing rib assembly. By means of the splayed reinforcing rib assembly at the bottom of the wing wall plate body, especially the T-shaped reinforcing structure, bending loads can be effectively resisted, the overall bending rigidity of the wall plate is remarkably improved, deformation caused by bearing complex aerodynamic loads in the flying process is reduced, and the aerodynamic performance of an aircraft wing is guaranteed.

The utility model relates to the field of railway construction, and discloses a replacement-free ribbed slab culvert section structure in a railway second-line-increasing high roadbed, which comprises a common slab culvert section and a ribbed slab culvert section, pile foundations are arranged on both sides of the common slab culvert section, and the surfaces of roadbed protection piles and retaining walls on the outer sides of wing walls of the common slab culvert block second-line-increasing side roadbed earthwork. L-shaped top beams are erected at the top ends of the pile foundations. In the utility model, the large-span cover plate is arranged at the existing common cover plate culvert section to span the existing culvert, the load of the train is completely borne by the large-span cover plate, and the filled soil of the high roadbed is borne by the protective piles, so that the existing common cover plate section on the second-line-increasing side does not bear the load of the high filled soil and the train any more; a common cover plate section under the existing line does not need to be replaced by a ribbed slab culvert section through heavy excavation of an existing roadbed, the construction method is simple and convenient, interference to the existing line is small, the manufacturing cost is low, and reference is provided for future similar problems.

The invention discloses an underground diaphragm wall foundation type retaining supporting structure adjacent to a river channel and a construction method thereof, the underground diaphragm wall foundation type retaining supporting structure adjacent to the river channel comprises a foundation unit, the foundation unit comprises two wing walls, any wing wall comprises a main body part arranged in the length direction of the river channel and a protruding part vertically arranged in the middle of the main body part, and the main body part and the protruding part jointly form an inverted-T-shaped structure; the convex parts of the two wing walls are opposite to each other and are arranged at intervals; the two ends of the transverse partition connecting wall are connected with the two protruding parts respectively, the lower portion of the transverse partition connecting wall is provided with a concrete hidden beam in the length direction, and reserved steel bars at the two ends of a steel reinforcement cage of the transverse partition connecting wall and reserved steel bars of the adjacent wing wall steel reinforcement cage form socket connection structures respectively; a retaining wall and a backfill soil layer. The inverted-T-shaped wing wall and the linear transverse partition connecting wall are matched through the steel bar socket and spigot joint structure to form a stable underground anti-scour foundation, and the construction technology that the wing wall is firstly grooved and delayed coagulation concrete is adopted is combined, so that cold joints of a concrete structure can be effectively prevented from being formed; and the construction quality and the construction stability are improved while the construction material cost is controlled.

This invention belongs to the field of water conservancy and irrigation engineering technology, and discloses a downstream-flow-type hydraulic reference water divider structure, including a base, a flood discharge cap, and a guide wing wall. The base is located at the bottom of the main canal and upstream of the branch canal. A protrusion is provided on the top surface of the end of the base facing the branch canal, and a water divider weir is provided on the protrusion to connect the main canal and the branch canal. The flood discharge cap is located above the protrusion and forms a water divider between the protrusion and the protrusion. The water divider is connected to the water divider weir, and the width of the water divider is greater than the width of the water divider weir. The guide wing wall is located upstream of the water divider along the flow direction of the main water flow in the main canal, and is used to guide a portion of the main water flow in the main canal to the inlet of the water divider and / or the water divider weir and into the branch canal. This invention achieves precise water distribution under stable water depth conditions, is suitable for small and medium-sized traditional and modern irrigation projects, and solves the problems of uneven irrigation, large head loss, poor structural stability, and susceptibility to erosion damage of traditional water divider structures.

This invention provides a gap-filling structure within a wing wall that allows for the installation of a sheet-like or plate-like material such as insulation at the boundary between the inner space of the wing wall of a building and the interior space leading to that inner space, even in structures where no columns are installed at the boundary. [Solution] The gap-sealing structure 1 within the wing wall seals the boundary B between the inner space 11A of the wing wall 11 in the building 10 and the interior space 12A that leads to the inner space 11A. In this gap-sealing structure 1 within the wing wall, a plate-like body 4 is fixed to an inner corner joint member 3, which is an exterior wall component that constitutes the back side of the exterior wall panel 21 of the building 10, and a sheet-like material 5 (or plate-like material) is held by a portion 40 of this plate-like body 4 that protrudes toward the boundary B side.

The invention discloses a railway culvert wing wall step-type chiseling and inlaying heightening lengthening construction method, and belongs to the technical field of existing railway line structure transformation construction. The method aims at solving the technical problems that an existing wing wall foundation needs to be wholly broken in traditional construction, disturbance to a line slope is large, and the safety risk is high. The method is characterized by comprising the steps that automatic monitoring equipment is installed on a road shoulder; measuring and marking a stepped chiseling line and a turning opening vertical inlaying wide line on the existing wing wall; steel rail piles are driven into the side slope for protection, and operation space is excavated in a layered mode; carrying out vertical cutting and stepped horizontal cutting along the marking line by adopting a rope saw; and finally, chiseling and grooving the cutting step surface, chiseling off part of the wing wall foundation, installing steel bars and pouring concrete to form a vertical inlay complement combined with the existing wing wall and a heightened side wall. The method is mainly used for carrying out lengthening transformation construction on the existing railway culvert on the premise that the railway operation safety is ensured.

The invention provides a method for constructing a dry land maintenance environment in a ship lock drainage tank culvert, belongs to the technical field of water conservancy projects, and can solve the technical problem that the ship lock drainage tank culvert is difficult to maintain. According to the technical scheme, the method comprises the steps that S1, a floating type blocking door installation environment is prepared, wherein the step of locally cutting off a splayed wing wall, the step of arranging a ship lock drainage tank culvert outlet bottom sill and the step of leveling a vertical face are included; s2, a floating type blocking door descending step: the balance of the left side and the right side of the floating type blocking door is adjusted by filling water into a shoulder water filling cabin of the floating type blocking door, and the floating type blocking door is prevented from inclining leftwards and rightwards; s3, adjusting the position of the floating plugging door; and S4, sealing the floating type blocking door, namely adjusting the position of the floating type blocking door in the upstream direction by using the jacks, respectively mounting one jack in the middle and at the two ends of the floating type blocking door, fixing a jack stress support at the tail part of each jack by using an expansion bolt, and tightly jacking the floating type blocking door on the vertical concrete surface and the bottom sill by using the jacks.

The invention provides a wing box structure formed based on composite material combination and an assembling method. According to the scheme, direct lap joint of stringers of a wing main box section and rib webs is achieved through co-curing of the stringers. The installation limitation of the conventional wing wall plate and the peripheral corners of the rib edge strip is avoided, the connection structure is simplified, and the assembly and maintenance efficiency can be improved. A traditional wing rib is usually of a C-shaped closed structure, and the manufacturing difficulty of a forming process is high; according to the existing scheme, the rib is simplified into an L-shaped structure, so that the process manufacturing difficulty and the mold manufacturing cost of the composite rib are reduced. Meanwhile, the wing ribs can be interchanged, later maintenance after mass production of aircrafts is facilitated, the operation cost is reduced, and the efficiency is improved. According to the scheme, the integral wallboard is formed through combination, the requirements for dimpling and drilling of a traditional wallboard are omitted, an internal wing package can be omitted, the sealing performance of the wallboard is more mature, the precision of the aerodynamic configuration of the wallboard is guaranteed, and the economical efficiency of aircraft operation is improved.

The application discloses a wing wall width design method of a special-shaped section steel pipe bundle shear wall. The special-shaped section steel pipe bundle shear wall comprises a multi-cavity steel pipe formed by welding a plurality of rectangular steel pipes and concrete poured in the multi-cavity steel pipe. Firstly, the axial compression stability coefficient of a main wall limb when being simply supported on two sides and three sides, the section ultimate bearing capacity of the main wall limb and the section ultimate bearing capacity of a wing wall are determined; according to the above parameters, the amplification coefficient of the wing wall calculation length coefficient is obtained, and then the axial compression stability coefficient of the wing wall around a strong axis is obtained; based on the section ultimate bearing capacity of the wing wall and the axial compression stability coefficient around the strong axis, the critical width-thickness ratio formula that the wing wall needs to meet is determined; finally, the wing wall width is designed according to the critical width-thickness ratio formula. The wing wall width design method of the special-shaped section steel pipe bundle shear wall provided by the application has high theoreticality and accuracy, fills the blank of the prior art and provides guarantee for the structural design of the steel pipe bundle shear wall.

The invention discloses a wing wall copper water stop rapid filling structure, and relates to the technical field of hydraulic engineering, the wing wall copper water stop rapid filling structure comprises a wallboard, the right side of the wallboard is fixedly connected with a copper water stop wing plate, the outer wall of the copper water stop wing plate is provided with a grouting mechanism, the right side of the wallboard is provided with a fixing mechanism, and the right side of the copper water stop wing plate is provided with a monitoring mechanism. An exhaust hole is formed in the rear side of the top of the copper water stop wing plate, and a pressure relief mechanism is arranged on the rear side of the top of the copper water stop wing plate. The grouting mechanism comprises two placement frames, and the bottoms of the two placement frames are fixedly connected to the front side of the top of the copper water stop wing plate. According to the invention, grouting is carried out after a closed cavity is formed by the wing plate and the wall plate, bubbles are discharged by the vibrator to assist slurry to flow, slurry distribution at corners is forcibly filled by the stirring shaft and the stirring ring, the problems of uneven flow and bubbles are solved, the structure is simple, the efficiency and quality are improved, the cost is reduced, and the risk of leakage is reduced.

The utility model belongs to the technical field of aeronautical manufacturing, and particularly relates to a wing wallboard numerical control posture adjusting and positioning device which is composed of a four-axis numerical control posture adjusting mechanism, a shape maintaining plate, an adapter frame and a suction cup assembly. Before the wing wall plates are separated from the wall plate assembly fixture, the shape maintaining plates are connected with the wing wall plates, and each wing wall plate is provided with two shape maintaining plates; the wall plate provided with the shape-preserving plate is hoisted to a wing general assembly fixture, the wing general assembly fixture is connected with the transfer frame through bolt holes in the shape-preserving plate, and the suction cups are fixed to the wing wall plate, so that the wing wall plate is stably connected with the shape-preserving frame, and deflection and movement do not occur in the moving process; the adapter frame is arranged on the four-axis numerical control posture adjusting mechanism, and the spatial position of the adapter frame is adjusted through the four-axis numerical control posture adjusting mechanism so that the posture of the wing wallboard can be adjusted. The four-axis numerical control posture adjusting mechanism can achieve movement in four directions, the movement is transmitted to the wall plate through the shape preserving frame and the shape preserving plate, and adjustment of the posture of the wall plate is achieved. The wing assembly fixture is a part of a wing assembly fixture, can realize quick and accurate attitude adjustment and positioning of wing wallboards, and improves the wing appearance assembly accuracy.

This invention provides a fish-attracting device and method for attracting fish at a fishway entrance to solve the technical problem of unstable water flow velocity at the entrance of a conventional fishway. [Solution] A fish-attracting device for a fishway entrance, comprising two wing walls 1 fixedly installed in a river channel to form a fishway, with fixing plates 3 provided at the fishway entrances of the two wing walls 1, and a frame 2 fixed to one of the wing walls 1. Multiple rotating columns are rotatably connected inside the frame 2, a front plate is provided on the outside of the rotating columns, and an inner shaft is rotatably connected inside, with retaining plates fixed to both sides of the inner shaft, and cavities are provided for the movement of the retaining plates, and multiple sets of holes are provided inside the rotating columns. Multiple sets of sliding columns corresponding to the holes are fixed to both sides of the retaining plates, and a second spring is sleeved between the holes and the retaining plates on the outside of the sliding columns. A first rack is slidably connected to the top of the frame 2, and teeth that interlock with the first rack are provided on the outer top end of the inner shaft.

The utility model discloses a gate chamber arranged in combination with an empty box type retaining wall, which comprises a water inlet gate arranged on the bank side, a bulkhead gate and a service gate are arranged in gate holes of the water inlet gate, and a portal crane track is arranged at the top of the bulkhead gate; a wing wall of an empty box type retaining wall structure is arranged at the end of the water inlet gate, the portal crane rail extends to the top of the wing wall, a plurality of gate chambers located in a portal crane rail working area are arranged in the wing wall, rain shielding cover plates are arranged at the tops of the gate chambers, and communicating pipes for connecting the adjacent gate chambers are arranged at the bottoms of the gate chambers. The gate chamber located at the tail end is provided with a drainage pipe extending out of the wing wall. The gate chamber structure is simple in structure and convenient to use, the gate chamber is constructed in the empty box type retaining wall of the wing wall, the purposes of not only meeting the soil and water retaining effect of the wing wall, but also meeting the storage requirement of the gate chamber are achieved, the length of a water inlet gate in the downstream direction is greatly reduced, and the project investment limit is reduced.

This product is attached to U-shaped corners such as around the wing walls and porch columns of a house. In the case of a wing wall, as shown in Reference Perspective Diagram 1 illustrating the usage, this product is attached to the end face of the wing wall so as to be continuous with the exterior wall material on the side. In the case of a porch column, as shown in Reference Perspective Diagram 2 illustrating the usage, this product is attached so as to sandwich the porch column.