CN216973340U

CN216973340U - Bidirectional water flow self-traction hydraulic lifting sewage interception coarse grating

Info

Publication number: CN216973340U
Application number: CN202220566431.4U
Authority: CN
Inventors: 李纪; 范宜金; 张雷珍; 陶安安
Original assignee: SHANGHAI YOUWEI ENGINEERING DESIGN CO LTD
Current assignee: SHANGHAI YOUWEI ENGINEERING DESIGN CO LTD
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-07-15
Anticipated expiration: 2032-03-15

Abstract

The utility model discloses a bidirectional water flow self-traction hydraulic lifting sewage interception coarse grating. Two-way rivers are from pulling hydraulic lifting and from cutting dirty thick grid and include: a tubular sliding track; the floating box type grid body chain is formed by connecting a plurality of sections of floating box type grid bodies, and each section of floating box type grid body is connected through an internode connecting hinge; at least one end part of the floating box type grid body chain is connected to the tubular sliding track through a track connecting hinge, and the track connecting hinge automatically lifts along the tubular sliding track along with the change of the water level; at least one automatic pin penetrating and releasing mechanism, wherein the automatic pin penetrating and releasing mechanism is automatically connected with or separated from the internode connecting hinge on the corresponding position; a propeller propulsion mechanism; the remote control unit is combined with the energy storage unit. The utility model provides a two-way rivers are from drawing the non-whole fixed of bars body of water conservancy lift interception dirty thick grid, realize when reducible cost that the large-scale drift thing of threatening the pump station is carried out the automation and is intercepted, is collected, is gathered together and clear up under two-way rivers, different water level conditions, and single can dismantle, the maintenance of being convenient for.

Description

Bidirectional water flow self-traction hydraulic lifting sewage interception coarse grating

Technical Field

The utility model relates to the technical field of sewage blocking and cleaning of hydraulic and hydroelectric engineering, in particular to a sewage blocking coarse grid used in front of a pump station water inlet pool in a hydraulic junction.

Background

A large-sized and medium-sized bidirectional drainage pump station is characterized in that one or more sewage blocking and cleaning mechanisms are arranged at the front and the rear of a water inlet/discharge pool in order to prevent sewage from entering a unit, damaging water pump blades and interfering the operation of the pump station. At the pump station that the filth volume is big, or windstorm threatens, add to put one and intercept dirty thick grid in trash remover equipment for intercept large-scale filth, prevent to exceed the large-scale filth jam of trash remover equipment clearance ability, and influence trash remover normal operating, can also prevent that large-scale filth from striking equipment under the windstorm influence, cause the damage to trash remover.

The existing pump station sewage interception thick grating mostly adopts a fixed grating body, needs a concrete foundation and a fixed embedded part, and needs to be arranged from the bottom to the water surface in a full length mode because the amplitude of the operating water level of the pump station is larger. In order to ensure the strength and rigidity of the fixed grid body, a concrete gate pier is generally adopted, a wider water inlet pool (river channel) is divided into a plurality of holes, and the civil engineering investment is consumed. And the large floating objects which are blocked in front of the fixed sewage interception coarse grating can only be cleaned manually, which is also very difficult work. In addition, the fixed grid can only be hoisted and disassembled, special equipment needs to be equipped, and the maintenance cost is high; some even fixed joints cannot be disassembled.

SUMMERY OF THE UTILITY MODEL

The application provides a bidirectional water flow self-traction hydraulic lifting sewage interception coarse grating. Its aim at solves among the prior art fixed grid with high costs and the difficult problem of clearance.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

bidirectional rivers are from pulling hydraulic lifting and cutting dirty thick grid, include: the tubular sliding rail is fixedly arranged on the bank side; the floating box type grid body chain is formed by connecting a plurality of sections of floating box type grid bodies, and each section of floating box type grid body is connected through an internode connecting hinge; at least one end part of the floating box type grid body chain is connected to the tubular sliding track through a track connecting hinge, and the track connecting hinge moves on the tubular sliding track along with the rise and fall of the water level; the automatic pin penetrating and releasing mechanism is arranged on the side edge of the floating box type grid body and is automatically connected with or separated from the internode connecting hinge on the corresponding position; the propeller propulsion mechanism is arranged on at least one section of the floating box type grid body; the remote control unit and the energy storage unit are combined and arranged on the floating box type grid body provided with the propeller propelling mechanism, and the remote control unit and the energy storage unit are combined to send control signals to the automatic pin penetrating and releasing mechanism and the propeller propelling mechanism and provide energy.

Preferably, each section of the floating box type grid body has a structure comprising: two sets of floating structures, wherein the floating structures comprise: a buoyancy tank located at the upper end; and a frame without a floor at the bottom; two ends of the grid bars are respectively and fixedly connected to the same side edge of the buoyancy tank and the frame; the two groups of floating structures are oppositely fixed together, and two groups of connecting lug plates are respectively arranged between the opposite floating boxes and between the frames.

Preferably, the tubular sliding rail includes: the lower end of the track steel pipe is fixedly connected in the concrete structure; and the jacking pivot structure is fixed at the top end of the track steel pipe and is fixedly connected with the concrete structure through a pull rod and anchor bars.

Due to the adoption of the technical scheme, the grid bodies of the bidirectional water flow self-traction hydraulic lifting sewage interception coarse grid are not all fixed, cost can be reduced, meanwhile, large drifting objects threatening a pump station are automatically intercepted, collected, gathered and cleaned under the conditions of bidirectional water flow and different water levels, and the single movable vertical type sewage interception coarse grid can be detached, replaced and maintained conveniently.

Drawings

FIG. 1 is a floor plan of the present invention;

FIG. 2 is an enlarged partial view of the land joining portion of the present invention in plan view;

FIG. 3 is an enlarged fragmentary view of the land-side connection portion of the utility model in elevation;

FIG. 4 is an enlarged partial view of the land-side connection portion of the isometric view of the present invention;

FIG. 5 is an isometric view of a single section grid body of the present invention;

FIG. 6 is an elevational cross-sectional view of the tubular sliding track of the present invention;

FIG. 7 is a top view of the tubular sliding track pivot of the present invention;

FIG. 8 is a schematic diagram of the self-pulling movement of the grid of the present invention.

Detailed Description

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

Please refer to fig. 1 to fig. 3, which are schematic structural diagrams according to an embodiment of the present application. In the present embodiment, the present invention is mainly composed of a tubular sliding rail 1, a buoyant box type grid chain 2, a power unit, and the like. Each section of independent floating box type grid body is connected into a floating box type grid body chain 2 through a connecting hinge, and then is connected with a tubular sliding track 1 to form a movable organic whole; and the power device realizes the self-traction function.

The tubular sliding track 1 is a fixed part that serves as a whole coarse dirt-catching grid. As shown in fig. 7 and 8, the tubular sliding rail 1 includes a rail steel pipe 11 and a pivot structure 12. The lower end of the rail steel pipe 11 is fixedly combined in a concrete structure on the shore. And the pivot structure 12 is fixed at the top end of the track steel pipe 11. The pivot structure 12 is fixed to the concrete structure by the combination of two sets of tie rods 13 and anchor bars 14, further ensuring the stability of the storage type sliding rail 1. The tubular sliding track is used for supporting and restraining the floating box type grid body chain 2, loads acting on the floating box type grid body chain 2 are transmitted to a concrete foundation, and meanwhile, the floating box type grid body chain 2 freely rises and falls along the tubular sliding track along with the water level of a river channel so as to effectively intercept thick dirt which cannot be processed by the trash remover all the time, and therefore normal operation of the trash remover equipment and the pump station unit is guaranteed. Referring to fig. 7, the method does not need a plurality of concrete partition pier foundations, reduces the consumption of concrete and steel, reduces the construction cost of new projects, and is beneficial to the reconstruction of old projects.

Referring to fig. 3 to 5, the floating length of the floating box type grid body chain 2 can be adjusted according to the actual situation of the hydro junction, and each section of floating box type grid body 21 has interchangeability and can meet the requirements of different working conditions. Referring to fig. 5, each independent floating box type grid body 21 is welded into a whole by two groups of floating structures. Each set of floating structures is formed by welding a buoyancy tank 211, a bottomless frame 212, and a set of grills 213. As shown in fig. 5, the buoyancy tank 211 is located at the upper portion, the frame 212 is located at the bottom portion, and the grill 213 is welded to the same side edge of the buoyancy tank and the frame. The frame 212 includes a bottom and sides fixedly connected to the bottom, as shown in fig. 3. The two sets of floating structures are fixed together oppositely, and two sets of connecting ear plates 214 are respectively arranged between the opposite floating boxes 211 and between the frames 212. The connecting ear plates 214 symmetrically connect the opposite buoyancy chambers 211 and the opposite frames 212 together, and the connecting ear plates 214 are used for connecting other components. The utility model provides a flotation tank formula bars body 21 adopts two flotation tank lower parts in upper portion to have a flotation tank structure, and the focus leans on down, and the centre of buoyancy leans on last, and the gesture is stable in aqueous.

The attachment hinges include an internode attachment hinge 22 and a track attachment hinge 23. As shown in fig. 2 to fig. 4, each section of the floating box type grid 21 is connected to the adjacent floating box type grid 21 by an internode connecting hinge 22 and a fixing member. That is, the internode connecting hinge 22 connects the two connecting ear plates 214 above and below the two adjacent floating box type grid bodies 21, the double-hinge type connection limits the degree of freedom of the grid bodies, prevents the grid bodies from unexpected movements such as overturning and rolling, and makes the grid bodies more stable when moving in water. Through the connection of the internode connecting hinges 22, the freedom degree of the independent floating box type grid bodies is limited, the adjacent two sections of floating box type grid bodies can only relatively rotate on the horizontal plane, and the plurality sections of floating box type grid bodies are connected together to form a curve and can freely swing under the action of bidirectional water flow. The connecting hinges of the bidirectional water flow self-traction hydraulic lifting sewage interception coarse grating can be detached, each section of grating body and each hinge can be taken out independently, the residual part is not influenced to play a role, and the maintenance is convenient.

The ends of the pontoon chain 2 are connected to the tubular sliding rail 1 with rail-connecting hinges 23. The connection of the rail connection hinge 23, which can move on the tubular sliding rail 1 as the water level rises and falls, is not locked, so that the dirt can be blocked under any water level conditions.

The power device comprises a propeller propelling mechanism 3, an automatic pin penetrating and releasing mechanism 4 and a remote control unit and energy storage unit combination 5. As shown in fig. 3, a propeller propulsion mechanism 3 can be arranged on one section of the floating box type grid body 21 or several sections of the floating box type grid bodies 21 or on each section of the floating box type grid body 21 of the floating box type grid body chain 2. The movement of the floating box type grid body chain 2 can be flexibly realized through the propeller propulsion mechanism 3, namely, the self-traction is realized, so that the intercepted pollutants are conveniently gathered and piled up, and the problem of inconvenience in garbage treatment of the existing fixed grid body is solved. Referring to fig. 3 again, the remote control unit and energy storage unit assembly 5 is arranged on the section of the floating box type grid body 21 provided with the propeller propulsion mechanism 3, and the remote control unit and energy storage unit assembly 5 is arranged on the upper side of the floating box to avoid direct soaking of river water. The remote control unit and the energy storage unit combination 5 can receive command signals to remotely control the propeller propelling mechanism 3, and meanwhile, the energy storage unit supplies energy to the propeller propelling mechanism 3 and the automatic pin penetrating and releasing mechanism 4. Referring to fig. 2 to 4, an automatic pin penetrating and releasing mechanism 4 is arranged on one section of the floating box type grid body 21 or a plurality of sections of the floating box type grid bodies 21 or each section of the floating box type grid body 21. The automatic pin inserting and removing mechanism 4 is of a conventional structure and is not described in detail herein. After receiving the instruction sent by the remote control unit and the energy storage unit combination 5, the automatic pin penetrating and releasing mechanism 4 automatically disengages or is combined with the internode connecting hinge of the adjacent floating box type grid body 21, so that the floating box type grid body which can independently run in one section or a plurality of sections can be formed. The floating box type grid body which can run independently can be used for conveying a large amount of pollutants to a specified treatment position through the matching of the remote control unit and the energy storage unit combination 5 and the propeller pushing mechanism 3, and the risk and difficulty of manual treatment are reduced.

The working principle of the utility model is illustrated as follows:

the whole bidirectional water flow self-traction hydraulic lifting sewage interception coarse grid is divided into a fixed part and a movable part. The tubular sliding track is a fixed part and is connected with a concrete structure of the hydro-junction into a whole to provide a motion limiting track for the movable part. The whole floating box type grid body chain 2 is a movable part, can move up and down on the track and simultaneously deforms along with water flow, and the task of blocking large-scale floaters is completed.

The whole floating box type grid body chain 2 consists of a plurality of sections of floating box type grid bodies, each section of floating box type grid body is connected through a hinge, and the single section of floating box type grid bodies are all of an independent structure. The floating box type grid body floats on the water surface through the floating box 211, and the grid bars 213 and the bottom frame 212 are below the water surface, so that the floating objects are intercepted and the floating objects are stabilized.

The multi-section floating box type grid bodies 21 are connected with each other to form a wide belt-shaped chain structure, and an arc-shaped dirt blocking surface is formed under the action of water flow. The arc-shaped dirt blocking surface can change along with the change of the water flow direction, is suitable for bidirectional water flow, and can not generate displacement and deflection outside the allowable degree of freedom due to the self-stabilizing effect of the floating box type grid body and the constraint of the double hinges, so that the working surface is stable.

The floating box type grid body chain 2 can move up and down on the tubular sliding track 1, and the tubular sliding track 1 is long from the bottom to the top of a quay wall, so that the floating box type grid body chain 2 can always block floating objects on the water surface and 1 m-2 m below the water surface.

The tubular sliding track 1 is formed by pouring concrete in a composite stainless steel tube and is fixedly connected with a concrete foundation through an upper branch point and a lower branch point, so that the strength, the rigidity and the stability of the tubular sliding track are ensured, and the tubular sliding track can bear the load from a grid body at a working position.

The internode connecting hinge 22 and the track connecting hinge 23 both adopt engineering plastic alloy shaft sleeves and adopt large clearance fit, the engineering plastic alloy has the advantages of self-lubrication, shock absorption, high strength and the like, and the large clearance fit can avoid the dead locking of the movable part under the condition of meeting the requirement of a kinematic pair.

When the sewage amount is too large and the accumulated sewage is too much, operation and maintenance personnel can remotely send an instruction to a power device for automatically pulling the hydraulic lifting sewage interception coarse grid, the automatic pin penetrating and releasing mechanism 4 finishes pin releasing, the chain link is disconnected, the propeller propulsion mechanism 3 is started, and the floating box type grid body 21 is pushed to the shore along the motion track shown in the figure 8. At the moment, the operation and maintenance personnel can carry out centralized treatment on the dirt on the shore.

The main structural stress of the self-traction hydraulic lifting sewage interception coarse grating is the tension generated by a load acting on a sewage interception surface on a chain link and the stress condition of a supporting load of a tubular sliding rail.

The curve formed when the floating box type grid body chain 2 works is complex, the curve can be simplified into a catenary line or an arc during calculation, and the approximate calculation formula of the maximum tension of the chain links is deduced as follows:

in the formula: f-maximum tension present in the link;

p is grid load (in accordance with the uniform distribution assumption);

l is arc length, the chain link calculated length is equal to the sum of all the chain link center distances;

a is chord length and the center distance of the two-tube type sliding track;

theta is the included angle between the tangent line of the end part of the catenary and the central connecting line of the two tracks;

the tensile-to-charge ratio (F/P) and the arc-to-chord ratio (l/a) can be plotted according to the formula as follows, wherein the abscissa represents the arc-to-chord ratio (l/a) and the ordinate represents the tensile-to-charge ratio (F/P).

According to a formula and an image, when the distance between two banks is constant and the uniform load is constant, the chain is shorter, the tension of the chain link is larger, and the structure is stronger. According to the actual working condition, the longer the chain is, the more the consumed materials are, the larger the space required by the arrangement of the floating box type grid body chain 2 is, and the higher the cost is. And taking comprehensive consideration of structural stress and economic benefit, wherein the arc-chord ratio (l/a) is 1.1-1.2.

In order to adapt to the bidirectional water flow of a bidirectional pump station, the utility model is designed by dynamically simulating the swinging action of a chain structure under the bidirectional water flow, and through repeated comparison and optimization, the length of a segmented chain link unit (the distance between the chain shaft center of one side of a grid body which is not connected with a hinge and the chain shaft center of one side of an internode hinge which is not connected with the grid body) of the floating box type grid body chain 2 is 1 m. A certain included angle is reserved between the floating boxes of the two units, so that the phenomenon that mutual interference occurs between the units due to the change of a trash blocking curve under dynamic impact of water flows in different directions is avoided. The included angle may range from 90 deg. to 270 deg., and the selection of a particular included angle may be a matter of design choice. For example, the angle is generally limited to 150 to 210 degrees, the angle can be designed to be limited to 170 to 190 degrees in a scene with limited motion requirements, and the angle can be designed to be limited to 90 to 270 degrees in a scene with wide-range motion requirements. Meanwhile, the number of the chain link sections can be freely increased or reduced due to the short length of the chain link units, and only a steel pipe embedded part and a matched concrete foundation are needed to be properly adjusted, so that the width of different orifices of different hubs can be adapted to by one set of design.

The track of the coarse grid is designed as a steel pipe, an upper fixing point A and a lower fixing point B are arranged, and the acting force of the floating box type grid body chain 2 is in the middle to form a simple supporting structure, so that the stress is facilitated. Concrete is poured into the steel pipe to form a steel pipe concrete column structure, the rigidity of the track is increased, and the movement blockage caused by the deformation of the track can be avoided.

The power device of the utility model is designed to utilize the characteristic that the chain structure can be disconnected and continued, and a pin penetrating and releasing mechanism is arranged on a chain node (generally a connecting node of a first section and a second section) far away from the shore to complete the chain breaking and chain continuing operation of the floating box type grid body chain 2. Meanwhile, the utility model adopts the propeller power to replace the traditional steel wire rope traction to push the grid body, the propeller traction can always keep a relative angle with the chain, and the steel wire rope traction can only be in a certain fixed direction. The specific working mode of the power device is designed as follows: the operation and maintenance personnel send out an instruction, the pin penetrating and disengaging mechanism disconnects the chain, the propeller is started, the propelling direction and the advancing direction form a certain angle, the component force from the traction force in the tangential direction serves as the tension for unfolding the chain, and the component force perpendicular to the tangential direction pushes the floating box type grid body chain 2 to rotate around a shaft to gather the dirt to the shore, as shown in fig. 8.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. All equivalent changes and modifications of the utility model that may occur to those skilled in the art are intended to be covered by the appended claims.

Claims

1. Two-way rivers are from pulling hydraulic lifting and cutting dirty thick grid, its characterized in that includes:

the tubular sliding track is fixedly arranged on the bank side;

the floating box type grid body chain is formed by connecting a plurality of sections of floating box type grid bodies, and each section of floating box type grid body is connected through an internode connecting hinge; at least one end part of the floating box type grid body chain is connected to the tubular sliding track through a track connecting hinge, and the track connecting hinge moves on the tubular sliding track along with the rise and fall of the water level;

the automatic pin penetrating and releasing mechanism is arranged on the side edge of the floating box type grid body and is automatically connected with or separated from the internode connecting hinge on the corresponding position;

the propeller propulsion mechanism is arranged on at least one section of the floating box type grid body;

the remote control unit and the energy storage unit are combined and arranged on the floating box type grid body provided with the propeller propelling mechanism, and the remote control unit and the energy storage unit are combined to send control signals to the automatic pin penetrating and releasing mechanism and the propeller propelling mechanism and provide energy.

2. The bidirectional water flow self-traction hydraulic lifting sewage interception coarse grid according to claim 1, wherein the structure of each section of floating box type grid body comprises:

two sets of floating structures, wherein the floating structures comprise:

a buoyancy tank located at the upper end; and

a frame without a floor at the bottom;

two ends of the grid bars are respectively and fixedly connected to the same side edge of the buoyancy tank and the frame;

the two groups of floating structures are oppositely fixed together, and two groups of connecting lug plates are respectively arranged between the opposite floating boxes and between the frames.

3. The bi-directional water flow self-traction hydraulic lifting sewage interception coarse grid according to claim 1, wherein said tubular sliding track comprises:

the lower end of the track steel pipe is fixedly connected in the concrete structure;

and the jacking pivot structure is fixed at the top end of the track steel pipe and is fixedly connected with the concrete structure through a pull rod and anchor bars.