Special floating object cleaning tool, fishing device and fishing method

Abstract

The invention belongs to the technical field of hydropower stations, and particularly relates to a tool special for floating object cleaning, a fishing device and a fishing method.The tool comprises a net-shaped structure, a protection plate, an upper connecting rod, an upper supporting ring and a lower supporting ring, the outer edge of the net-shaped structure is connected with the lower supporting ring, and the upper surface of the net-shaped structure is fixedly connected with one end of the upper connecting rod; the other end of the upper connecting rod extends towards one end away from the net-shaped structure; the upper supporting ring is located above the lower supporting ring, the upper supporting ring and the lower supporting ring are connected through a plurality of inclined protection plates, and the distance between the end, close to the lower supporting ring, of each protection plate and the upper connecting rod is smaller than the distance between the end, close to the upper supporting ring, of each protection plate and the upper connecting rod. According to the special tool, the inclined protection plates are connected between the upper supporting ring and the lower supporting ring, and the floating objects can be directly conveyed to a garbage station in a dumping mode after fishing is completed, so that the time interval of two times of fishing is shortened, and the special tool has the advantage of improving the fishing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of hydropower stations, and in particular relates to a special tool for cleaning floating objects, a salvaging device and a salvaging method. Background Art

[0002] A hydropower station is a comprehensive engineering facility that converts water energy into electrical energy. It generally includes a reservoir formed by water retaining and discharge structures and a water diversion system, a power plant, and electromechanical equipment. The high water level of the reservoir flows into the plant through the water diversion system to drive the turbine generator set to generate electricity, and then is input into the power grid through step-up transformers, switch stations and transmission lines. When the hydropower station is in operation, it will be affected by the compensation and regulation between different rivers. To ensure the normal operation of the hydropower station, it is necessary to pay attention to the maintenance of the power station. There are often some floating objects floating on the water surface of the hydropower station, such as wood, weeds, domestic garbage, etc. If these floating objects are not cleaned up in time, they may damage the water quality, so the floating objects on the water surface need to be cleaned up.

[0003] Chinese patents: CN212153328U, CN217378782U, CN217651747U, CN214423324U, etc. all disclose devices for cleaning floating objects on the water surface. However, the devices disclosed in the above patents have the defect of low salvage efficiency when in use.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the technical problems existing in the prior art, the present invention provides a special tool for cleaning floating objects, a salvaging device and a salvaging method.

[0006] The present invention includes the following technical solutions:

[0007] A first aspect of the present invention provides a special tool for cleaning floating objects, comprising a mesh structure, a guard plate, an upper connecting rod, an upper support ring and a lower support ring, wherein the outer edge of the mesh structure is connected to the lower support ring, the upper surface of the mesh structure is fixedly connected to one end of the upper connecting rod, and the other end of the upper connecting rod extends toward an end away from the mesh structure; the upper support ring is located above the lower support ring, and the upper support ring and the lower support ring are connected by a plurality of inclined guard plates, and the distance between one end of each guard plate close to the lower support ring and the upper connecting rod is smaller than the distance between one end of the guard plate close to the upper support ring and the upper connecting rod.

[0008] Furthermore, the mesh structure is made of metal material.

[0009] Furthermore, the guard plate is provided with a hole.

[0010] Further, the guard plate includes a first guard plate and a second guard plate, the upper support ring and the lower support ring are both rectangular, the area of ​​the upper support ring is larger than the area of ​​the lower support ring, the two long sides of the upper support ring and the two long sides of the lower support ring are respectively connected by two first guard plates, and the two short sides of the upper support ring and the two short sides of the lower support ring are respectively connected by two second guard plates;

[0011] Wherein, the length of the first guard plate is greater than the length of the second guard plate.

[0012] Furthermore, side columns are connected between the corners of the upper support ring and the lower support ring at corresponding upper and lower positions.

[0013] Furthermore, the four corners of the upper support ring are all configured to be circular arcs; and / or the four corners of the lower support ring are all configured to be circular arcs.

[0014] Furthermore, the mesh structure includes first metal strips and second metal strips connected to each other, a plurality of the first metal strips are evenly spaced apart in the transverse direction, and a plurality of the second metal strips are evenly spaced apart in the longitudinal direction.

[0015] Furthermore, the distance between two adjacent first metal strips is 25 mm-35 mm; and / or the distance between two adjacent second metal strips is 25 mm-35 mm.

[0016] A second aspect of the present invention provides a floating object cleaning and salvaging device for a hydropower station reservoir, comprising a lifting structure and the special tool described above, wherein the lifting structure comprises a slewing arm, a first telescopic steel wire rope, a second telescopic steel wire rope, a main hook and a plurality of auxiliary hooks, the slewing arm is connected to the main hook via a first telescopic steel wire rope, the main hook is connected to the upper connecting rod, and the plurality of auxiliary hooks are all connected to the upper support ring via a second telescopic steel wire rope.

[0017] The third invention of the present invention provides a method for salvaging floating objects in a hydropower station reservoir, which is implemented based on the salvaging device described above. The salvage method comprises the following steps:

[0018] The slewing arm hoists the special tool to the reservoir area of ​​the hydropower station, and the first telescopic steel wire rope and the second telescopic steel wire rope are extended simultaneously to lower the special tool until the water surface just covers the mesh structure;

[0019] The swivel arm moves to tilt the special tool to salvage the floating object;

[0020] The slewing arm lifts the special tool above the garbage transfer vehicle, the second telescopic wire rope connected to the auxiliary hook on the same side is shortened, and the second wire ropes connected to the other auxiliary hooks are extended to dump the floating objects in the special tool into the garbage transfer vehicle.

[0021] By adopting the above technical solution, the present invention has the following advantages:

[0022] 1. The special tool of the present invention has a plurality of inclined guard plates connected between the upper support ring and the lower support ring, so that after the salvage is completed, the floating objects can be directly sent to the garbage station by dumping, thereby shortening the time interval between two salvage operations and having the advantage of improving the salvage efficiency.

[0023] 2. The salvaging device of the present invention does not require manual assistance of special tools when salvaging and processing floating objects; by controlling the slewing arm, the first telescopic steel wire rope and the second telescopic steel wire rope, the special work can be controlled to realize the salvage and processing of floating objects. It has the advantage of high salvage efficiency.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of a special tool for cleaning floating objects in an embodiment of the present invention;

[0027] Figure 2 It is a cross-sectional view of a special tool for cleaning floating objects in an embodiment of the present invention;

[0028] In the figure, 10-mesh structure, 101-first metal strip, 102-second metal strip, 20-guard plate, 21-first guard plate, 22-second guard plate, 30-upper connecting rod, 40-upper supporting ring, 50-lower supporting ring, 60-hole, 70-side column, 80-through groove, 90-bottom plate, 100-first mounting plate, 110-second mounting plate, 120-screw, 130-connecting rod, 140-hook. DETAILED DESCRIPTION

[0029] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the prior art, when the floating objects are removed from the water surface by the device, they are dumped into the garbage station. However, since the devices are surrounded by vertical baffles, the floating objects cannot be dumped into the garbage station by dumping. The floating objects removed by the device need to be manually assisted or manually removed, which increases the processing time, resulting in a long time interval between the next removal of floating objects from the water surface by the device, and has the defect of low salvage efficiency.

[0032] This embodiment provides a special tool for cleaning floating objects, such as Figure 1 The mesh structure 10 comprises a guard plate 20, an upper connecting rod 30, an upper support ring 40 and a lower support ring 50, wherein the outer edge of the mesh structure 10 is connected to the lower support ring 50; it should be noted that the mesh structure 10 and the lower support ring 50 may be directly connected or indirectly connected; Figure 1 In the embodiment, the mesh structure 10 is indirectly connected to the lower support ring 50 , the mesh structure 10 is connected to the guard plate 20 , and the guard plate 20 is connected to the lower support ring 50 .

[0033] The upper support ring 40 is located above the lower support ring 50, and the upper support ring 40 and the lower support ring 50 are connected by a plurality of inclined guard plates 20, and the distance between the end of each guard plate 20 close to the lower support ring 50 and the upper connecting rod 30 is smaller than the distance between the end close to the upper support ring 40 and the upper connecting rod 30. Such inclined guard plates 20 can not only ensure effective salvage, but also dump the floating objects to the garbage station by dumping after salvage is completed, thereby improving the garbage disposal efficiency; thereby improving the salvage efficiency.

[0034] This embodiment also provides a floating object cleaning and salvaging device for a hydropower station reservoir area, comprising the special tool and the hoisting structure of the present invention, wherein the hoisting structure comprises a slewing arm, a first telescopic steel wire rope, a second telescopic steel wire rope, a main hook and a plurality of auxiliary hooks, wherein the slewing arm is connected to the main hook via the first telescopic steel wire rope, and the slewing arm is connected to the upper connecting rod 30 via the main hook, and the plurality of auxiliary hooks are connected to the upper support ring 40 via the second telescopic steel wire rope. The present invention does not limit the specific number and specific connection positions of the plurality of auxiliary hooks and the upper support ring 40, but the connection of the plurality of auxiliary hooks to the upper support ring 40 via the second telescopic steel wire rope requires that when the special tool is hoisted, the special tool is stable and balanced.

[0035] The salvaging device of this embodiment does not require manual assistance of the special tool operation when salvaging and processing floating objects by using the special tool; the special work can be controlled by controlling the rotating arm, the first telescopic steel wire rope and the second telescopic steel wire rope to realize the salvage and processing of floating objects, which has the advantage of high salvage efficiency.

[0036] This embodiment also provides a method for salvaging floating objects in a hydropower station reservoir area, which is implemented based on the salvaging device of the present invention. The salvage method includes the following steps:

[0037] The slewing arm hoists the special tool to the reservoir area of ​​the hydropower station, and the first telescopic steel wire rope and the second telescopic steel wire rope are extended at the same time to lower the special tool until the water surface just covers the mesh structure 10; the slewing arm moves to tilt the special tool to salvage floating objects; because the special tool is connected to the slewing arm through the first telescopic steel wire rope and the second telescopic steel wire rope, the special tool will tilt left and right when the slewing arm moves left and right, and the floating objects on the left and right of the special tool are salvaged; the slewing arm moves forward and backward, and the special tool tilts forward and backward, and the floating objects in front and behind the special tool are salvaged. In this way, the floating objects around the special work can be salvaged, which has the advantage of high salvage efficiency.

[0038] Of course, other salvage methods can also be used for salvage through the salvage device of the present invention. For example, the special tool is hoisted to the hydropower reservoir area through the rotating arm, and the first telescopic wire rope and the second telescopic wire rope are extended at the same time to lower the special tool until the special tool is below the water surface. The rotating arm is then moved and the special tool is lifted again for salvage. The lifted special tool cannot be salvaged again. If it is salvaged again, the floating objects that have been salvaged will run away, resulting in low salvage efficiency.

[0039] The slewing arm lifts the special tool above the garbage transfer vehicle, the second telescopic wire rope connected to the auxiliary hook on the same side is shortened, and the second wire ropes connected to the other auxiliary hooks are extended to dump the floating objects in the special tool into the garbage transfer vehicle.

[0040] Therefore, during this use process, the salvaged floating objects can be directly transferred to the garbage transport truck, avoiding the problem of cumbersome operation caused by the need for manual assistance in transferring them to the garbage transport truck when using other salvage tools in the prior art. Therefore, this design reduces the burden on cleaning personnel by directly transferring the salvaged floating objects to the garbage transport truck, saving time and effort during use.

[0041] The mesh structure 10, on the one hand, is used to support the floating objects salvaged by special tools so that the floating objects cannot pass through the mesh structure 10; on the other hand, it is also used to connect the upper connecting rod 30; and the upper connecting rod 30 is a structure used for lifting, so the mesh structure 10 is preferably made of metal material.

[0042] Preferably, the metal material is made of stainless steel, which can not only increase the strength of the mesh structure 10 during use, but also prevent the mesh structure 10 from rusting. Similarly, the guard plate 20, the upper connecting rod 30, the upper support ring 40, the lower support ring 50 and the upper connecting rod 30 are all made of stainless steel.

[0043] When the special tool of the present invention salvages floating objects, the special tool is tilted by moving the rotating arm forward, backward, left and right to salvage the floating objects. In order to improve the efficiency of draining water entering the special tool during the salvage process, in some embodiments, the guard plate 20 is provided with a hole 60. Preferably, as Figure 1 As shown, a plurality of holes 60 are provided, and the plurality of holes 60 are linearly arranged along the length direction of the guard plate 20 .

[0044] The present invention does not limit the shapes of the upper support ring 40 and the lower support ring 50. In order to reduce production costs and improve salvage efficiency, in some embodiments, such as Figure 1 As shown, the guard plate 20 includes a first guard plate 21 and a second guard plate 22, the upper support ring 40 and the lower support ring 50 are both rectangular, the area of ​​the upper support ring 40 is larger than the area of ​​the lower support ring 50, the two long sides of the upper support ring 40 and the two long sides of the lower support ring 50 are respectively connected by two first guard plates 21, and the two short sides of the upper support ring 40 and the two short sides of the lower support ring 50 are respectively connected by two second guard plates 22; wherein, the length of the first guard plate 21 is larger than the length of the second guard plate 22.

[0045] In the structure where the upper support ring 40 is a rectangle, the rotating arm is connected to the upper support ring 40 through four auxiliary hooks, and the four auxiliary hooks are respectively connected to the four corners of the rectangular support ring. Since the connection of the auxiliary hook must ensure the stability of the special tool, it is best to determine the connection position when the auxiliary hook is connected to the upper support ring 40 for the first time, and the connection position of the auxiliary hook and the upper support ring 40 is fixed when salvaging and handling floating objects. Therefore, the connection between the auxiliary hook and the upper support ring 40 can be fixed by other auxiliary connection structures. It should be noted that it is best to determine the connection position, which is not contradictory to the aforementioned connection position of the auxiliary hook and the upper support ring 40 without restriction, because the connection between the auxiliary hook and the upper support ring 40 is on the one hand to ensure the stability of the special tool, and on the other hand to control the salvage and handling of floating objects, so there are actually many combinations of connection positions that can achieve these two purposes, such as the connection position of the rectangular upper support ring 40 can be the four corners of the support ring, or the middle position of the four sides of the support ring; and the determined connection position should be understood as being connected to the four sides of the support ring or the four corners of the support ring.

[0046] Preferably, in some embodiments, Figure 1 As shown, the side column 70 is connected between the corners of the upper and lower corresponding positions of the upper support ring 40 and the lower support ring 50; the auxiliary hook can be directly connected to the side column 70, which saves the step of determining the position and reduces the use of other auxiliary connection structures; improves efficiency and reduces costs.

[0047] Since the special tool is hoisted and moved by a rotating arm, there is a risk of collision between the special tool and other structures and equipment in the environment. Therefore, in some embodiments, the four corners of the upper support ring 40 are all set to circular arc shapes; and / or the four corners of the lower support ring 50 are all set to circular arc shapes; such a structure can reduce losses and reduce the risk factor even if there is a collision.

[0048] In some embodiments, Figure 1 As shown, the mesh structure 10 includes first metal strips 101 and second metal strips 102 connected to each other, a plurality of the first metal strips 101 are evenly spaced apart in the horizontal direction, and a plurality of the second metal strips 102 are evenly spaced apart in the vertical direction.

[0049] In some embodiments, the distance between two adjacent first metal strips 101 is 25 mm-35 mm; and / or the distance between two adjacent second metal strips 102 is 25 mm-35 mm.

[0050] In actual use, the spacing of the first metal strips 101 can be selected to be any one between 25mm, 30mm, 35mm or 25mm-35mm, and the spacing of the second metal strips 102 can be selected to be any one between 25mm, 30mm, 35mm or 25mm-35mm. The sizes within this range can not only salvage floating objects that affect the operation of the trash rack of the hydropower station, but also filter some smaller floating objects, thereby reducing the workload of cleaning. If the spacing of the first metal strips 101 and / or the spacing of the second metal strips 102 is less than 25mm, it may increase the time for the floating objects to separate from the water, and the floating objects are prone to clogging. The mesh structure 10, if the spacing of the first metal strips 101 and / or the spacing of the second metal strips 102 is greater than 35 mm, may result in the inability to filter smaller floating objects; because in the existing method, when the dam top gantry is used for salvage, the floating objects are salvaged by the clamps on the dam top gantry, and the opening of the clamps is large when the clamps clamp the floating objects, so only larger floating objects, such as large trees and other garbage, can be cleaned; but during the operation of the trash rack of the hydropower station, there are still many smaller floating objects that need to be cleaned, so through the above design, it is convenient to salvage smaller floating objects, and more floating objects in the reservoir area can be salvaged, thereby improving work efficiency.

[0051] In this way, floating objects that affect the operation of the trash rack of the hydropower station can be salvaged, and some smaller floating objects can be filtered, reducing the workload of pollution cleaning.

[0052] Preferably, a hook 140 is provided at the upper end of the upper connecting rod 30 to facilitate connection with the main hook.

[0053] like Figure 2As shown, the mesh structure 10 is provided with a through slot 80 that is connected to each other from top to bottom; a connecting rod 130 is vertically arranged in the through slot 80; a bottom plate 90 is fixed to the bottom of the mesh structure 10 through the through slot 80 at the bottom of the connecting rod 130; a first mounting plate 100 is fixed to the top of the connecting rod 130 through the through slot 80; a second mounting plate 110 is fixed to the bottom of the upper connecting rod 30, and threaded holes that are connected to each other from top to bottom are provided on the first mounting plate 100 and the second mounting plate 110, and threads in the threaded holes are connected to the first mounting plate 100 and the second mounting plate 110. The mounting plate 100 and the second mounting plate 110 are fixed together by screws 120; the bottom of the connecting rod 130 is located below the mesh structure 10, and the top of the connecting rod 130 is located above the mesh structure 10; the top of the bottom plate 90 can be fixed to the bottom of the mesh structure 10 by welding, because the connecting rod 130 is fixed on the bottom plate 90, so the position of the connecting rod 130 is limited; because the first mounting plate 100 is fixed to the top of the connecting rod 130, the position of the first mounting plate 100 can be limited; The center lines of the threaded holes on the mounting plate 100 and the second mounting plate 110 are located on the same straight line. When in use, the first mounting plate 100 and the second mounting plate 110 can be fixed together by tightening the screws 120 into the threaded holes on the first mounting plate 100 and the second mounting plate 110; because the upper connecting rod 30 is fixed on the second mounting plate 110, the upper connecting rod 30 can be limited so that the upper connecting rod 30 is installed on the mesh structure 10; and then the second mounting plate 110 and the first mounting plate 100 can be separated by unscrewing the screws 120. When the second mounting plate 110 is separated from the first mounting plate 100, it is convenient to disassemble the upper connecting rod 30, thereby facilitating the disassembly of the hook 140 at the top of the upper connecting rod 30; during use, because there is only one hook 140, the hook 140 is prone to wear during long-term use, so the hook 140 may need to be replaced. Therefore, the above design facilitates the replacement and installation of the hook 140 and the upper connecting rod 30.

[0054] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of multiple components or the interaction relationship of multiple components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of the present invention, it should be understood that all terms used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present invention.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special tool for cleaning floating objects, characterized in that: The invention comprises a mesh structure (10), a guard plate (20), an upper connecting rod (30), an upper support ring (40) and a lower support ring (50), wherein the outer edge of the mesh structure (10) is connected to the lower support ring (50), the upper surface of the mesh structure (10) is fixedly connected to one end of the upper connecting rod (30), and the other end of the upper connecting rod (30) extends away from the mesh structure (10); the upper support ring (40) is located above the lower support ring (50), and the upper support ring (40) and the lower support ring (50) are connected by a plurality of inclined guard plates (20), and the distance between one end of each guard plate (20) close to the lower support ring (50) and the upper connecting rod (30) is smaller than the distance between one end of the guard plate (20) close to the upper support ring (40) and the upper connecting rod (30).

2. A special tool for cleaning floating objects according to claim 1, characterized in that: The mesh structure (10) is made of metal material.

3. A special floating object cleaning tool according to claim 1, characterized in that: The guard plate (20) is provided with a hole.

4. A special tool for cleaning floating objects according to any one of claims 1 to 3, characterized in that: The guard plate (20) comprises a first guard plate (21) and a second guard plate (22); the upper support ring (40) and the lower support ring (50) are both rectangular; the area of ​​the upper support ring (40) is larger than that of the lower support ring (50); the two long sides of the upper support ring (40) and the two long sides of the lower support ring (50) are respectively connected via two first guard plates (21); and the two short sides of the upper support ring (40) and the two short sides of the lower support ring (50) are respectively connected via two second guard plates (22); Wherein, the length of the first guard plate (21) is greater than the length of the second guard plate (22).

5. A special floating object cleaning tool according to claim 4, characterized in that: Side columns (70) are connected between the corners of the upper support ring (40) and the lower support ring (50) at corresponding upper and lower positions.

6. A special tool for cleaning floating objects according to claim 4, characterized in that: The four corners of the upper support ring (40) are all arranged in a circular arc shape; and / or the four corners of the lower support ring (50) are all arranged in a circular arc shape.

7. A special tool for cleaning floating objects according to any one of claims 1 to 3, characterized in that: The mesh structure (10) comprises first metal strips (101) and second metal strips (102) connected to each other, a plurality of the first metal strips (101) are arranged at uniform intervals in the transverse direction, and a plurality of the second metal strips (102) are arranged at uniform intervals in the longitudinal direction.

8. A special floating object cleaning tool according to claim 7, characterized in that: The distance between two adjacent first metal strips (101) is 25 mm to 35 mm; and / or the distance between two adjacent second metal strips (102) is 25 mm to 35 mm.

9. A floating object cleaning and salvaging device for a hydropower station reservoir, characterized in that: It comprises a lifting structure and a special tool as described in any one of claims 1 to 8, wherein the lifting structure comprises a slewing arm, a first telescopic steel wire rope, a second telescopic steel wire rope, a main hook and a plurality of auxiliary hooks, the slewing arm is connected to the main hook via the first telescopic steel wire rope, the main hook is connected to the upper connecting rod (30), and the plurality of auxiliary hooks are connected to the upper support ring (40) via the second telescopic steel wire rope.

10. A method for salvaging floating objects in a hydropower station reservoir, characterized in that: Based on the salvage device according to claim 9, the salvage method comprises the following steps: The slewing arm hoists the special tool to the reservoir area of ​​the hydropower station, and the first telescopic steel wire rope and the second telescopic steel wire rope are extended simultaneously to make the special tool descend until the water surface just covers the mesh structure (10); The swivel arm moves to tilt the special tool to salvage the floating object; The slewing arm lifts the special tool above the garbage transfer vehicle, the second telescopic wire rope connected to the auxiliary hook on the same side is shortened, and the second wire ropes connected to the other auxiliary hooks are extended to dump the floating objects in the special tool into the garbage transfer vehicle.

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