CN216474905U

CN216474905U - Trash rack anchoring structure capable of changing along with water level

Info

Publication number: CN216474905U
Application number: CN202122558785.2U
Authority: CN
Inventors: 吴正桥; 李梅; 蒋志勇; 邵章品; 简杰
Original assignee: China Water Resources Beifang Investigation Design and Research Co Ltd
Current assignee: China Water Resources Beifang Investigation Design and Research Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-05-10
Anticipated expiration: 2031-10-22

Abstract

The utility model discloses a trash rack anchoring structure changing along with water level, which comprises anchoring piers, a floating box, wheel shafts, sliding wheels, wheel rails and hanging points, wherein the anchoring piers with the lower parts positioned in water are positioned on the stable foundation of a bank, the water facing surface of the anchoring piers is provided with vertical floating box grooves for accommodating and enabling the floating box to move up and down, two side walls of each floating box groove are symmetrically provided with a pair of vertical wheel grooves, the wheel groove is provided with a wheel rail which is arranged on the inner wall of the wheel groove close to the side facing the water, the buoyancy tank is positioned in the buoyancy tank groove, the sliding wheels are connected with the positions corresponding to the wheel grooves through wheel shafts, hanging points are arranged on the floating box which is towards the upstream face, the hanging points are connected with a sewage blocking cable which is penetrated with a sewage blocking and discharging floating barrel, so that under the buoyancy action of water, the sliding wheels move up and down in the wheel grooves along the wheel rails to drive the floating boxes to move up and down, and then the trash holding and discharging floating barrels on the trash holding cables are driven to move up and down along with the water level. Simple structure is practical, and degree of automation is high, and the construction is simple and convenient, investment saving.

Description

Trash rack anchoring structure capable of changing along with water level

Technical Field

The utility model relates to tension anchoring of a trash rack and an ice blocking cable, in particular to a trash rack anchoring structure which changes along with water level.

Background

When the reservoir is built in the area with uneven runoff, the reservoir water level is often large in amplitude, and when more dirt comes from the upstream of the reservoir, a dirt blocking device is often required to be arranged. The general existence of floaters has potential safety hazards to engineering operation, and the influence of the floaters on a power generation and water diversion system is particularly serious. Usually, a water diversion water inlet of a power station is provided with a trash rack for intercepting floating dirt in a reservoir area, but the trash rack is often blocked due to large amount of the dirt, so that head loss is caused if the amount of the dirt is small, generated energy and water flow are reduced, a water source is polluted, and power generation benefits are influenced; the safety of the trash rack is influenced if the trash rack is heavy, and even the unit of the power station is forced to stop. The shutdown maintenance of the trash rack or the cleaning of the hydropower station is troublesome work which is labor-consuming and time-consuming. In practical engineering, most hydropower stations are provided with a trash rack at a water inlet and a trash rack facility at the front edge of the water inlet.

The trash rack support is divided into a fixed type and a vertical lifting movable type according to the support modes at two ends. The fixed type trash rack is characterized in that anchor rings are embedded on anchor piers at two ends to fix anchor ropes, the structure is simple, construction is convenient, but the trash rack can only be used under the condition that the variation of reservoir water level is not large, and floating objects near anchor points at two ends cannot be effectively intercepted in the process of water level variation of a large high dam reservoir with large variation of water level. The movable vertical lifting trash rack can float up and down along with the change of the water level of a large reservoir, and no notch is left at two ends when the water level changes. The trash rack arranged in the way is not only always in a plane stress state, but also can effectively intercept floating objects in the trash rack range. The traditional vertical lifting movable type trash rack is characterized in that one end or two ends of the traditional vertical lifting movable type trash rack are connected to a lifting movable trolley, the lifting of the trolley is controlled by a fixed winch, and when the amplitude of water level amplitude exceeds a certain numerical value, a signal is sent by an electrical control system and an opening and closing device is controlled to operate the trolley to move upwards (or downwards) for a certain numerical value to move so as to adapt to the change of the water level. The operation of the equipment is greatly influenced, if the adjustment is not timely, the fixed point can be pulled out or the trash rack is hung above the water surface, and the floating objects cannot be intercepted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a trash rack anchoring structure which changes along with the water level, so as to provide stable tension for two ends of a trash rack and ensure that the operation of the trash rack is not influenced by the change of the water level.

In order to solve the technical problems, the utility model adopts the technical scheme that: a trash rack anchoring structure changing along with water level comprises anchoring piers, a floating box, wheel shafts, sliding wheels, wheel rails and hanging points, wherein the anchoring piers with the lower parts positioned in water are located on the stable foundation of a bank side, the water facing surface of the anchoring piers is provided with a vertical floating box groove used for accommodating and enabling the floating box to move up and down, two vertical wheel grooves are symmetrically arranged on two side walls of the floating box groove, the wheel groove is provided with wheel rails which are arranged on the inner wall of the wheel groove close to the side facing the water surface, the buoyancy tank is positioned in the buoyancy tank groove, the position corresponding to the wheel groove is connected with a sliding wheel through a wheel shaft, a hanging point is arranged on the floating box which is towards the upstream face, the hanging point is connected on a sewage blocking cable which is penetrated with a sewage blocking and discharging floating barrel, so that under the buoyancy action of water, the sliding wheels move up and down in the wheel grooves along the wheel rails to drive the floating boxes to move up and down, and further drive the trash blocking and discharging floating barrels on the trash blocking cables to move up and down along with the water level.

The anchoring pier and the dam body are connected into a whole.

The size of the anchoring pier meets the requirements of self stability and structural strength under the tension of trash rack, and the length and the width of the anchoring pier are more than or equal to 2.0 m.

The grade of the concrete of the anchoring pier is not lower than C25.

The bottoms of the buoyancy tank groove and the wheel groove are lower than the lowest water level, and the top of the buoyancy tank groove and the wheel groove is higher than the highest water level and is not less than 1.0 m.

The buoyancy tank floats on the water surface, and the height of the buoyancy tank exposed to the water surface is more than or equal to 0.5 m.

The wheel rail is consistent in height with the wheel groove, firm in installation and smooth in surface.

The utility model has the beneficial effects that: the anchoring structure of the trash rack changes along with the water level, which provides stable tension for two ends of the trash rack and ensures that the operation of the trash rack is not influenced by the change of the water level. The floating box type anchoring structure is adopted, the anchoring points can change along with the trash rack along with the water level, stable operation of the trash rack is guaranteed, the trash rack is prevented from being fixed and fixed due to the anchoring points, dead weight or buoyancy generated in the tensioning direction of the trash rack when the trash rack changes along with the water level can exert additional tension, the trash rack structure is damaged, meanwhile, the two ends of the trash rack are prevented from penetrating through the trash rack due to the fact that the trash rack is not attached to the water surface, and trash rack blocking effect is reduced.

Drawings

Fig. 1 is a plan view of the trash bar anchoring structure according to the present invention varying with water level.

FIG. 2 is a cross-sectional view of an exemplary embodiment of the anchoring structure for a trash rack according to the present invention;

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1 and 2, the structure comprises an anchoring pier 1, a buoyancy tank 4, a wheel shaft 5, a sliding wheel 6, a wheel rail 7 and a hanging point 8, wherein the anchoring pier 1 with the lower part positioned in water is located on the stable base of the shore, the water facing surface of the anchoring pier 1 is provided with a vertical buoyancy tank groove 2 used for containing and enabling the buoyancy tank 4 to move up and down, two vertical wheel grooves 3 are symmetrically formed on two side walls of the buoyancy tank groove 2, the wheel rail 7 is arranged on the wheel groove 3, the wheel rail 7 is arranged on the inner wall of the wheel groove 3 close to the water facing surface side, the buoyancy tank 4 is positioned in the buoyancy tank groove 2, the sliding wheel 6 is connected with the wheel groove 3 through the wheel shaft 5 at the position corresponding to the wheel groove 3, the hanging point 8 is arranged on the buoyancy tank 4 facing the water surface, the hanging point 8 is connected with a trash holding cable 9 through which the trash blocking and drainage buoy 10 passes through, the sliding wheel 6 drives the buoyancy tank 4 to move up and down along the wheel rail 7 to drive the trash cable 9 to move up and down and up and down in the buoyancy tank 4 under the buoyancy effect of water The upper trash blocking and discharging buoy 10 moves up and down along with the water level.

The anchoring pier 1 is located on a stable shore basis or is connected with a gravity dam body into a whole, the size of the anchoring pier is required to meet the requirements of self stability, structural strength and the like under the tension of trash rack discharge, and the length and the width of the anchoring pier are more than or equal to 2.0 m. The concrete of the anchoring pier 1 meets the requirements of freezing resistance and durability of a water level change area under the environment, and the grade of the concrete is not lower than C25. The bottom of the buoyancy tank groove 2 and the wheel groove 3 is lower than the lowest water level, the top is higher than the highest water level and is not less than 1.0m, and the influence of waves is considered. The size of the buoyancy tank is required to ensure that the whole sliding mechanism can normally float on the water surface, and the height of the whole sliding mechanism exposed out of the water surface is more than or equal to 0.5 m. The height of the wheel rail 7 is consistent with that of the wheel groove 3, and the wheel rail 7 is firmly installed and ensures the smooth surface.

The buoyancy tank troughs and buoyancy tank structures of the anchoring structures can be one or more side-by-side combinations according to the number of the trash holding and discharging points. In order to facilitate the installation and fixation of the wheel rail and ensure the smoothness and straightness of the wheel rail, secondary concrete is arranged at the rear part of the wheel rail.

As described in detail below, in this example, the construction is performed according to the following steps: firstly, excavating and cleaning a foundation of an anchoring pier 1, binding reinforcing steel bars, and pouring first-stage concrete to form the anchoring pier 1 with a floating box groove 2; reserving a dowel bar at the wheel rail 7 by the first-stage concrete, and welding and fixing the wheel rail 7 through the dowel bar; fixing a wheel shaft 5 on the floating box 4, installing sliding wheels 6 on two sides of the wheel shaft 5, and embedding the floating box 4 provided with the sliding wheels 6 into the floating box groove 2; and finally, tensioning a sewage blocking cable 9 which is full of a sewage blocking and discharging buoy 10 through a hanging point 8 fixed on the buoyancy tank 4, and finishing the whole sewage blocking and discharging construction.

The anchoring pier is of a conventional reinforced concrete structure, can be constructed together with a main engineering building, can be additionally arranged at a later stage, and is flexible in arrangement, low in construction difficulty and high in speed; the anchoring piers are determined to be in size according to the number of the sewage blocking and discharging hanging points, the tension and the water level amplitude, and the number of the anchoring piers, the floating box grooves and the floating box structures can be arranged side by side in one or more mode according to the number of the sewage blocking and discharging hanging points; the floating box type hanging point has simple structure and reliable operation, and provides stable tension for the trash rack by rolling the sliding wheels on the wheel rails; the floating box type hanging point structure floats on the water surface and can change along with the trash rack along with the water level, so that the stable operation of the trash rack is ensured, and the phenomenon that the trash rack generates additional tension in the tensioning direction of the trash rack due to the dead weight or buoyancy when the trash rack changes along with the water level and the structure of the trash rack is damaged because the anchoring point is fixed is avoided; the anchoring point and the trash rack change along with the water level, so that the situation that the two ends of the trash rack penetrate through the trash rack due to the fact that the trash rack is not attached to the water surface is effectively avoided, and the trash rack and trash rack blocking effect is reduced.

The above examples are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the examples, i.e., the equivalent changes or modifications made in the spirit of the present invention disclosed are still within the scope of the present invention.

Claims

1. A trash rack anchoring structure changing along with water level is characterized by comprising anchoring piers (1), a buoyancy tank (4), wheel shafts (5), sliding wheels (6), wheel rails (7) and hanging points (8), wherein the anchoring piers (1) with the lower parts positioned in water are located on the stable base of a bank, the water facing surface of each anchoring pier (1) is provided with a vertical buoyancy tank groove (2) which is used for containing and enabling the buoyancy tank (4) to move up and down, two vertical wheel grooves (3) are symmetrically arranged on two side walls of the buoyancy tank groove (2), the wheel rails (7) are arranged on the wheel grooves (3), the wheel rails (7) are arranged on the inner walls of the wheel grooves (3) close to one side of the water facing surface, the buoyancy tank (4) is positioned in the buoyancy tank groove (2), the sliding wheels (6) are connected at the positions corresponding to the wheel grooves (3) through the wheel shafts (5), the hanging points (8) are arranged on the buoyancy tank (4) facing the water surface, the hanging point (8) is connected to a trash blocking cable (9) through which a trash blocking and discharging buoy (10) penetrates, so that the floating box (4) can move up and down in the wheel groove (3) along the wheel rail (7) through the sliding wheel (6) under the buoyancy effect of water to drive the floating box (4) to move up and down, and further the trash blocking and discharging buoy (10) on the trash blocking cable (9) is driven to move up and down along with the water level.

2. A structure as claimed in claim 1, wherein the anchor piers (1) are integrated with the dam body.

3. The trash rack anchoring structure changing along with the water level as recited in claim 1, wherein the size of the anchoring pier (1) meets the requirements of self-stability and structural strength under the tension of the trash rack, and the length and the width are more than or equal to 2.0 m.

4. A water level fluctuating bar anchor structure according to claim 1, where the anchor piers (1) concrete no less than C25.

5. A structure as claimed in claim 1 wherein the bottom of the buoyancy tank (2) and the wheel groove (3) is below the lowest water level and the top is no less than 1.0m above the highest water level.

6. The structure of anchoring trash rack according to claim 1, wherein the buoyancy tank (4) floats on the water surface and the height above the water surface is greater than or equal to 0.5 m.

7. The structure of anchoring trash rack with varying water level according to claim 1, characterized in that the height of the wheel rail (7) is consistent with the height of the wheel groove (3), the wheel rail (7) is firmly installed and has a flat surface.