A device for removing debris from rivers

Abstract

A device for removing debris from rivers, the device comprising a hydraulic mechanism (1), a mounting bracket (2), a removal net support frame (3) and a debris removal net (4), wherein one side of the mounting bracket (2) faces the bow of the boat and is firmly connected to the hull of the boat (100), while the other side of the mounting bracket is connected to the removal net support frame (3) by a pair of left and right pivot bearings (21); the side of the removal net support frame (3) opposite the mounting bracket (2) is connected to the debris removal net (4);The hydraulic mechanism (1) comprises a hydraulic drive base (11) and a hydraulic rod (12), the end of the hydraulic rod (12) being rotatably connected in the vertical direction to a transverse connecting rod (31) at the upper edge of the debris removal net support frame (3), the hydraulic drive base (11) being located at the bow of the boat, the hydraulic drive base (11) driving the hydraulic rod (12) to telescoping, so that the debris removal net (4) rotates up and down and the removal of debris on and below the water surface is achieved; wherein the debris removal net (4) is a net-like, planar structure in the left-right direction with an overall inverted Y-shape, wherein its two outwardly directed branches are directed downwards and its root segments are firmly connected to the four crossbars of the removal net support frame (3); wherein the bottom of the debris removal net (4) has a front and rear, doubly curved structure which serves to allow the debris removal net (4) to lift the debris at the front end of the net under the action of the hydraulic rod (12) in order to recover it, or to pull and tow the debris at the rear end of the net.

Description

Technical field

[0001] The present invention relates to a device for removing debris from rivers, in particular a device for removing debris from rivers that can perform the removal of river blockages at full depth. Background technology

[0002] Since rivers flow through a wide area, through urban villages, cities and other areas where people congregate, as well as through mountainous regions with complex and varied terrain and primeval forests, it is inevitable that a large amount of household waste and sediment, tree branches, etc., is washed downstream with the rivers and stagnates in the catchment areas where the watercourses are narrower and the water depths are shallower, leading to siltation of the river channels.

[0003] River siltation is a common problem in the management of water protection projects, particularly river canals, and a significant issue that impacts the capability and level of project management and maintenance. Due to river siltation, large amounts of debris accumulate near the power plant's generator intake, the lock gate inlet and outlet, irrigation canals, and other locations. Some of this debris is carried by the water current into the intake, hindering the normal operation of power generation facilities and the proper raising and lowering of the lock gate, thus posing a serious safety hazard. Furthermore, a large quantity of debris obstructs the water flow and reduces the discharge rate, preventing the required flow and discharge rates from being achieved.The silting up of the river will also cause the water level to rise upstream of the dam and the groundwater level to rise in the nearby coastal areas, which will very likely lead to flooding and soil salinization, threatening the safety of towns and communities, transport links, etc., and seriously affecting agricultural and industrial production as well as the lives of residents.

[0004] Currently, the water management industries have to invest more financial, material and human resources each year in cleaning up floating objects in river channels, and since the cleaning of floating objects is mainly based on manual towing along the bank or dredging for recovery, the central location of the river and the invisible floating objects below the water's surface cannot be completely cleaned, and some silt remains, obstructing the river flow and creating safety risks.

[0005] US Patent 2019 / 0009867A1 discloses a floating waste collection system comprising a vessel with a forward-extending landing door at the bow, which can be lowered or raised by the operator. A rigid net frame is attached to the upper edge of the landing door. A net is attached to the net frame. During use, the landing door is partially lowered to position the net in the water. The vessel then moves slowly to collect floating waste in the net. The net frame includes at least two upward-projecting posts that optionally engage in receptacles attached to the cargo hatch. The receptacles and posts are oriented so that the net frame is perpendicular to the cargo hatch. The vessel includes a davit system for attaching and removing the net frame from the cargo hatch and for lifting the waste-filled net over waste containers in the hull.

[0006] CN 1 10 979 576 B discloses a device for harvesting aquatic plants and cleaning water surfaces of waste. The device comprises a main support structure, a device for collecting waste and aquatic plants, a frame for recycling aquatic plants and waste, and an automatic control system. The main support structure comprises a hull and an upper support, with a drive mechanism attached to the hull, the waste and aquatic plant collection device connected to the upper support, the aquatic plant and waste recycling frame attached to the hull, and the automatic control system attached to the hull.

[0007] DE 25 38 990 C3 discloses a watercraft for gathering and collecting floating debris from a body of water, with an opening in its bow that receives the debris, and with at least one guide vane deployed in front of its bow that gathers the debris towards the bow opening.

[0008] KR 10 2022 045 745 A discloses a device for separating floating materials from rivers, designed for separating and collecting river water and floating materials, including plastic and vinyl waste, that have entered the river water. The device comprises a body, an inlet section that directs the floating materials, including the plastic and vinyl waste, into the body along with the river water, a separating element arranged within the body that separates the river water and the floating materials to be separated by means of a vortex flow generated by the river water entering the body, and an outlet section that discharges the river water from the body to the outside after the floating materials have been separated by the separating element.

[0009] CN 2 09 211 421 U discloses a device for cleaning floating objects in rivers. The cleaning device for floating objects in rivers comprises a water inlet pipe and a water outlet pipe, wherein the collecting device comprises two equilateral triangular frames arranged opposite each other, wherein any two opposite lateral edges of the two equilateral triangular frames are connected by a collecting grid, wherein any two opposite lateral edges of the two equilateral triangular frames are connected to a scraper plate which is in a sliding motion perpendicular to the collecting grid, and wherein a counterweight is arranged on the scraper plate.A rotating shaft penetrates the two equilateral triangular frames and is rigidly connected to their side edges via connecting rods. The drive mechanism is used to power the rotating shaft, and the conveyor belt is located on one side of the two equilateral triangular frames. A longitudinal groove is formed in the upper end face of the conveyor belt.

[0010] CN 1 09 356 134 A discloses a floating device for fishing and removing aquatic plants to regulate the flow of a river. The device includes a lifting handle and a control handle. The left end of a drain pipe is rigidly connected to a water outlet at the right end of a water pump, and the right end of the drain pipe extends over the front of a removal boat placed in the river. Two arcuate grooves are formed in the underside of a sealing cover, and an arcuate ribbed plate is arranged between the two grooves. A water pump pipe is attached to the left end of a collection tank and communicates with the interior of the collection tank, and a removal probe has the shape of a trapezoidal tube and is rigidly connected to the left end of the water pump pipe.

[0011] CN 1 08 824 397 A discloses a device for collecting waste floating on a river, which relates to a waste collection device. The device for collecting waste floating on a river comprises a collection device for collecting the floating waste and a fastening device for securing the collection device in the river, wherein the collection device includes a collection channel for transporting the floating waste to the bank and a discharge plate for transporting the floating waste to the collection channel, the discharge plate being arranged at an angle and the higher end of the discharge plate being connected to the collection channel.

[0012] CN 2 15 562 467 U discloses a salvage vessel. The salvage vessel comprises a hull. A clamping opening is formed in the forward end of the hull, a filter device is arranged at the aft end of the hull corresponding to the clamping opening, a rotating rake is installed at the forward end of the clamping opening corresponding to the filter device, a filter plate has the shape of a quarter arc, and several rake bars are arranged in succession and attached to the rotating shaft. Each group of rake bars corresponds one-to-one to the filter grooves between the filter plates. A motor for driving the rotating shaft is mounted on the hull.The rotating rake turns under the driving force of the motor; passing debris is scraped into the filter groove between the filter device and the filter plate for filtering; the filtered debris moves further upwards under the action of the rotating rake until the rear end moves towards the ship's hull, and the efficient filtering performance of the filter plate is maintained. Contents

[0013] One objective of the present invention is to overcome the aforementioned shortcomings and to provide a device for removing debris from rivers that can perform a comprehensive and deep removal of river silt blockages.

[0014] The technical solution of the present invention is: A device for removing flotsam, mounted on the bow of a boat and relying on a hydraulic rod for transmission, and equipped with a flotsam removal net at the front end which can be fitted with a hydraulic rod to flexibly operate the flotsam removal net for removing flotsam.

[0015] In particular, the device consists of a hydraulic mechanism, a mounting bracket, a debris net support frame and a debris removal net, wherein one side of the mounting bracket faces the bow of the boat and is rigidly connected to the hull of the boat, while the other side of the mounting bracket is connected to the debris net support frame by a pair of left and right pivot bearings; the side of the debris net support frame opposite the mounting bracket is connected to the debris removal net;The hydraulic mechanism comprises a hydraulic drive base and a hydraulic rod, the end of which is rotatably connected to a transverse connecting rod at the upper edge of the removal net support frame in the vertical direction, and the hydraulic drive base is located at the bow, the hydraulic drive base driving the hydraulic rod to telescoping so that the debris removal net rotates up and down and the removal of debris on and below the water surface is achieved. The working method and the advantageous effects of the present invention

[0016] By installing and using the debris removal device in front of the boat, debris can be quickly and efficiently removed from the generator intake at the lock gate and the irrigation canal inlet. This ensures the safe operation of the generator, the smooth raising and lowering of the lock gate, and a consistent water flow. It also prevents debris from impeding the electrical and mechanical units from generating power, obstructing the raising and lowering of the lock gate, and damaging various equipment in direct contact with the water flow. Furthermore, the device can also dredge silted-up areas of the river, ensuring a smooth water flow by clearing these areas in a timely manner.In practice, the device can significantly reduce the operating time for removing debris and has a better removal effect, thus ensuring the removal of debris while simultaneously greatly reducing the costs for labor and material resources. Illustration of the attached drawings Fig. 1: A schematic representation of the overall structure of the device. Fig. 2: A side view of the device. Fig. 3: A schematic representation of the structure of the debris removal network. Fig. 4: A schematic representation of the connection between the distance net support frame and the debris removal net. Fig. 5: A schematic representation of the connection between the hydraulic rod and the distance net support frame. Fig. 6: A schematic representation of the connection between the mounting bracket and the distance net support frame.

[0017] In the figures: 1-Hydraulic mechanism, 2-Mounting bracket, 3-Removal net support frame, 4-Float removal net; 11-Hydraulic drive base, 12-Hydraulic rod; 21-Swivel bearing; 31-Cross connecting rod, 32-Main rod, 33-Auxiliary rod; 100-Hull of the boat. Specific embodiments

[0018] The invention is described in detail below in conjunction with the accompanying drawings.

[0019] As in the Fig. 1 and Fig.As shown in Figure 2, the device consists of a hydraulic mechanism 1, a mounting bracket 2, a debris net support frame 3 and a debris removal net 4, wherein the mounting bracket 2 and the debris net support frame 3 comprise a square frame and four horizontal rods perpendicular to the square frame, wherein the four horizontal rods of the mounting bracket 2 are directed towards the bow of the boat and are fixedly connected to the hull of the boat 100, wherein the four horizontal rods of the debris net support frame 3 are directed towards the debris removal net 4 and are fixedly connected to the debris removal net 4, wherein the frame end of the debris net support frame 3 is longer in the vertical direction than the length of the frame end of the mounting bracket 2;wherein the upper edge of the frame end of the mounting bracket 2 and the middle part of the frame end of the removal net support frame 3 are connected in the vertical direction by a pair of left and right pivot bearings 21, the connected removal net support frame 3 being able to rotate clockwise or counterclockwise along the connection of the pivot bearing 21; wherein the debris removal net 4 is a net-like, planar structure with an overall inverted Y-shape in the left-right direction, its two outwardly directed branches pointing downwards, and its root segments being rigidly connected to the four crossbars of the removal net support frame 3; wherein the hydraulic mechanism 1 comprises a hydraulic drive base 11 and a hydraulic rod 12, wherein the end of the hydraulic rod 12 is rotatably connected to a transverse connecting rod 31 at the top edge of the removal net support frame in the vertical direction, wherein the hydraulic drive base 11 is located at the bow of the boat, wherein the hydraulic drive base 11 drives the hydraulic rod 12 to telescoping, so that the debris removal net 4 rotates up and down and the removal of the debris on and below the water surface is achieved. Exemplary embodiment 1) Debris removal net 4 and its connecting part

[0020] The debris removal net 4 is the main component responsible for removing debris. Each mesh opening measures 10 x 10 cm. The purpose of this mesh structure is to minimize the weight of the debris removal net 4 while ensuring effective debris removal and reducing the load on the net support frame 3 and the mounting bracket 2.When using a larger mesh structure of 10 * 10 cm, the advantage of a reasonable widening of the gap is that the debris removal net 4 can not only clear and retrieve large debris such as household waste, branches and shrubs during the movement of the ship, but it also prevents the mesh from being too small and smaller debris, which does not cause a blockage, from passing through the mesh, thus blocking the front end of the net, which increases the blocking force of the entire device, leading to the problem that, due to the excessive quality of the hydraulic rod 12, it is difficult to pull the net to lift it. wherein the bottom of the debris removal net 4 has a front and rear, doubly curved structure in an inverted r-shape, which serves to allow the debris removal net 4 to lift the debris at the front end of the net under the action of the hydraulic rod 12 in order to recover it, or to pull and tow the debris at the rear end of the net.

[0021] The removal net support frame 3 is connected to the debris removal net 4 by three secondary rods 33 evenly spaced in the center of the main rod 32. The main rod 32 is welded to the debris removal net 4 and bolted to the removal net support frame 3 to support the main body of the debris removal net 4. The three secondary rods 33 on the main rod 32 are attached at the location of the removal net support frame 3 and, together with the main rod 32, form a four-pronged cone structure before being welded to the debris removal net 4. The four main rods 32, in conjunction with the debris removal net 4, form four four-pronged cones, ensuring that the debris removal net 4 is stable and does not wobble during use. 2) Hydraulic mechanism 1

[0022] The hydraulic mechanism 1 is designed as a drive with a single hydraulic rod 12, the hydraulic drive base 12 of which is mounted in the bow position. The hydraulic rod 11 is articulated to the transverse connecting rod 31 of the removal net support frame 3 such that there is a certain height difference between the hydraulic drive base 12 and the transverse connecting rod 31. The transverse connecting rod 31 is positioned at a higher level so that the hydraulic rod 12 has a sufficient angle to lift the debris removal net 4 back and forth when it is hydraulically retracted. The advantage of a single hydraulic rod over several hydraulic rods for power transmission is that the problem of the difficult synchronization and coordination of multiple hydraulic rods can be avoided.With multiple hydraulic rods, the structure of the control system and the mechanism such as control and transmission is relatively complicated, prone to failure, and relatively expensive. Furthermore, during operation, firstly, processes such as raising and lowering the debris removal net 4 become lengthy and complicated, and secondly, the long-term imbalance of force on the removal net support frame among the multiple hydraulic rods can lead to premature damage to the removal net support frame.

[0023] The hydraulic rod 12 and the cross-connecting rod 31 of the removal net support frame 3 are sleeved, and a sleeve device is installed at the front end of the hydraulic rod 12, which is then sleeved to the front rod of the removal net support frame 3, so that the thrust and tensile force of the hydraulic rod 12 acts directly on the rod body and is then transmitted from the rod body to the pivot bearing 21, allowing the entire debris removal net 4 to be pivoted up and down according to the intended angle. When the debris removal net 4 is pivoted upwards, it can lift the debris like a fork; when the debris removal net 4 is pivoted backwards, it acts like a rake, and the debris can also be raked.The angle of the removal net support frame 3 varies according to the change in the telescopic length of the hydraulic rod 12, and the different angles of the removal net support frame 3 correspond to different removal states of the debris removal net 4. At 45°, the debris removal net 4 is in a planing and gripping state; at 90°, the debris removal net 4 is in a flat sliding state; and at 180°, the debris removal net 4 is in a lifting state. Different states correspond to different functions of the debris removal net 4, such as...The debris removal net 4, in its planing and gripping state, allows for the capture of debris; due to the hyperbolic inverted design at the bottom of the debris removal net 4, the debris does not easily slip off the surface of the net after being captured; and at 180° in a lifting state, the debris on the net surface extends above the boat's surface, allowing it to be easily retrieved by the crew. The debris removal net 4, in a flat sliding state, allows debris at the bow of the boat to be pushed in front of the net and collected while underway, and then it can be grasped or lifted out.To prevent the bushing part from slipping and to stabilize it in the middle part of the rod, fastening buckles are attached to both ends of the bushing device, and the fastening buckles are secured with screws to ensure that the bushing device only moves within the permissible range.

[0024] A hydraulic control box is also provided on the hydraulic drive base 11, which can be used to control the telescoping of the hydraulic rod in order to enable flexible operation of the debris removal network and thus to realize the removal of the blocked debris. 3) Swivel bearing 21

[0025] The design of the connecting section of the removal net support frame 3 is intended to ensure that the telescopic action of the hydraulic rod 12 can drive the debris removal net 4 for swinging, lifting, retrieving, pushing, and pulling silt-polluting objects. Therefore, the design of the pivot bearing 21 is adopted in this section. The upper edge of the frame end of the mounting bracket 2 and the central part of the square frame end of the removal net support frame 3 are connected vertically by a pair of left and right pivot bearings 21. The connected removal net support frame 3 is capable of rotating clockwise or counterclockwise around the pivot bearing 21. It is necessary to explain that there are many methods in the prior art for the removal net support frame 3 to rotate about the upper edge of the mounting bracket 2, of which the type of rotation via the pivot bearing is only one.

[0026] Let us take the contraction of the hydraulic rod 12 as an example: When the hydraulic rod 12 is contracted, due to the angle of inclination of the rod, it causes the bearing of the removal net support frame 3 to rotate counterclockwise, and the front section of the support frame is raised upwards, so that the associated debris removal net 4 is also raised upwards with the rotation, and vice versa.

[0027] When describing the patent, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc. refer to the orientation or positional relationship shown in the accompanying drawings or to the orientation or positional relationship in which the product is usually arranged in use. This is solely for the purpose of facilitating and simplifying the description of the patent and is not intended to indicate or imply that the arrangement or component referred to has a specific orientation and must be constructed and operated in a particular manner. Therefore, it is not to be understood as a limitation of the patent.The terms for position and orientation described in this application are illustrated in the accompanying drawings, but may be modified as needed, and the modifications made are included within the scope of protection of the present invention. The accompanying drawings in this application are used only to illustrate the relative positional relationship and do not represent the true relationship.

Claims

A device for removing debris from rivers, the device comprising a hydraulic mechanism (1), a mounting bracket (2), a removal net support frame (3) and a debris removal net (4), wherein one side of the mounting bracket (2) faces the bow of the boat and is rigidly connected to the hull of the boat (100), while the other side of the mounting bracket is connected to the removal net support frame (3) by a pair of left and right pivot bearings (21); the side of the removal net support frame (3) opposite the mounting bracket (2) is connected to the debris removal net (4);The hydraulic mechanism (1) comprises a hydraulic drive base (11) and a hydraulic rod (12), the end of the hydraulic rod (12) being rotatably connected to a transverse connecting rod (31) at the top edge of the removal net support frame (3) in the vertical direction, the hydraulic drive base (11) being located at the bow of the boat, the hydraulic drive base (11) driving the hydraulic rod (12) to telescoping so that the debris removal net (4) rotates up and down and the removal of debris on and below the water surface is achieved; the debris removal net (4) being a net-like, planar structure with an overall inverted Y-shape in the left-right direction, its two outwardly directed branches being directed downwards and its root segments being rigidly connected to the four transverse rods of the removal net support frame (3);wherein the bottom of the debris removal net (4) has a front and rear, doubly curved structure which serves to allow the debris removal net (4) to lift the debris at the front end of the net under the action of the hydraulic rod (12) in order to recover it, or to pull and tow the debris at the rear end of the net. A device for removing debris from rivers according to claim 1, characterized in that the angle of the removal net support frame (3) varies according to the change in the telescopic length of the hydraulic rod (12) and the different angles of the removal net support frame (3) correspond to different removal states of the debris removal net (4). A device for removing debris from rivers according to claim 2, characterized in that the various removal states of the debris removal net (4) comprise the following: at 45° the debris removal net (4) is in a planing and gripping state to enable the capture of debris; at 90° the debris removal net (4) is in a flat sliding state to enable the debris at the bow of the boat to be pushed in front of the net and collected while underway; and at 180° the debris removal net (4) is in a lifting state to enable the debris on the net surface to extend above the boat surface so that it can be easily retrieved by the personnel on the boat. A device for removing debris from rivers according to any one of claims 1 to 3, characterized in that the mounting bracket (2) and the removal net support frame (3) comprise a square frame and four horizontal rods perpendicular to the square frame, wherein the four horizontal rods of the mounting bracket (2) are directed towards the bow of the boat and are firmly connected to the hull of the boat (100), wherein the four horizontal rods of the removal net support frame (3) are directed towards the debris removal net (4) and are firmly connected to the debris removal net (4), wherein the frame end of the removal net support frame (3) is longer in the vertical direction than the length of the frame end of the mounting bracket (2);wherein the upper edge of the frame end of the mounting bracket (2) and the middle part of the frame end of the distance net support frame (3) are connected in the vertical direction by a pair of left and right pivot bearings (21), wherein the connected distance net support frame (3) can rotate clockwise or counterclockwise along the connection of the pivot bearing (21). A device for removing debris from rivers according to one of claims 1 to 3, characterized in that the removal net support frame (3) is connected to the debris removal net (4) by three secondary rods (33) arranged evenly in the middle of the main rod (32). A device for removing debris from rivers according to claim 5, characterized in that the main rod (32) is welded to the debris removal net (4) and screwed to the removal net support frame (3) to support the main body of the debris removal net (4). A device for removing debris from rivers according to claim 5, characterized in that the three secondary rods (33) are attached to the main rod (32) at the location where the removal net support frame (3) is located, and together with the main rod (32) form a structure of a four-pronged cone before being welded to the debris removal net (4). A device for removing debris from rivers according to one of claims 1 to 3, characterized in that the hydraulic mechanism (1) adopts a structure driven by a single hydraulic rod (12) with a hydraulic drive base (12) mounted on the bow of the boat, and that the hydraulic rod (11) is connected to the transverse connecting rod (31) of the removal net support frame (3). A device for removing debris from rivers according to claim 8, characterized in that there is a certain height difference between the hydraulic drive base (12) and the cross-connecting rod (31), wherein the cross-connecting rod (31) is located at a high level so that the hydraulic rod (12) has a sufficient angle to lift the debris removal net (4) back and forth when it is hydraulically retracted. A device for removing debris from rivers according to one of claims 1 to 3, characterized in that the hydraulic rod (12) is connected to the transverse connecting rod (31) of the removal net support frame (3) by means of a sleeve and a sleeve device is installed at the front end of the hydraulic rod (12), which is then sleeved with the front rod of the removal net support frame (3), so that the thrust and tensile force of the hydraulic rod (12) acts directly on the rod body and is then transmitted from the rod body to the pivot bearing (21), so that the entire debris removal net (4) can be pivoted up and down according to the intended angle.

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