Floating type trash rack device

Abstract

The invention provides a floating type trash rack device which is characterized in that a plurality of trash rack assemblies which are sequentially connected end to end are arranged, each trash rack assembly comprises a floating mechanism and a trash rack body installed on one side of the floating mechanism, connecting pieces are arranged on the edges of the two sides of the outer portion of the floating mechanism, and a balance weight piece is further arranged at the tail end of the floating mechanism; the part, located on the water, of the trash rack body forms an upper rack body with larger density, and the part, located under the water, of the trash rack body forms a lower rack body with higher height. The device is of a floating structure, an effective impurity blocking function can be achieved regardless of the height of the water level, and the problem of blocking failure caused by the high water level or the low water level is avoided; as the trash rack body can move along with the water surface, the trash rack does not need to be arranged very high, and the equipment manufacturing cost is saved; the top end of the trash rack body extends out of the water surface, the condition of the trash rack body can be directly observed through naked eyes, the inspection difficulty is greatly reduced, meanwhile, the trash rack body can be conveniently taken out of the water surface, and the maintenance difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of trash racks in hydropower stations, and in particular to a floating trash rack device. Background Art

[0002] Hydropower generation is an important part of my country's power engineering. As hydropower generation is clean, efficient, and has a stable and sufficient energy supply, hydropower projects are gaining more and more attention. A hydropower station consists of a hydraulic system, a mechanical system, and an electric power generation device. It is a key water conservancy project that realizes the conversion of water energy into electric energy. The sustainability of electric energy production requires the uninterrupted use of water energy in a hydropower station. Through the construction of a hydropower station reservoir system, the distribution of water resources in time and space is artificially adjusted and changed to achieve sustainable use of water resources.

[0003] The hydropower station has a reservoir near the upstream part. The water in the reservoir is introduced into the turbine unit through the water inlet of the power station to generate electricity. Generally speaking, a trash rack is installed in front of the power generation water inlet of the hydropower station to block the debris (tree branches, garbage, etc.) on the water surface and prevent the debris from entering the water flow parts of the turbine to avoid irreversible mechanical damage to the water flow parts of the turbine. In particular, when debris enters the volute and flows through the guide vanes, it is easy to cause the guide vanes to get stuck, and a serious accident of shear pin shearing occurs. At this time, the generator set needs to be shut down urgently and the working door needs to be lowered for maintenance. This will cause unnecessary shutdowns for maintenance, and it will take a long time, affecting the normal power generation work.

[0004] The current trash rack device is usually fixed in front of the water inlet in front of the dam of the hydropower station. It is a fixed device and will not float with the fluctuation of the water level. When the water level in front of the dam fluctuates greatly, it may not be possible to block all the debris, which brings safety hazards to the operation of the generator set. In order to ensure that all debris can be blocked, the height of the trash rack needs to be designed to be very high, so that the upper part of the trash rack is guaranteed to be at the highest water level of the power plant, and the lower part of the trash rack is at the lowest water level of the power plant. This design makes the trash rack itself larger and consumes too much material, which increases the cost. At the same time, it also has a great impact on maintenance due to its own large problems, especially when the water level is high, most of the trash rack is below the water surface, and it is difficult to directly observe the condition of the trash rack, which greatly increases the difficulty of daily inspections and maintenance. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a floating trash rack device, which solves the problem in the prior art that the trash rack needs to be made very high, resulting in high cost and great difficulty in maintenance.

[0006] According to an embodiment of the present invention, a floating trash rack device is provided in conjunction with a water inlet of a hydropower station, and comprises a plurality of trash rack assemblies connected in sequence, wherein a moving assembly is further provided between the trash rack assemblies located at the head end and the tail end and the two ends of the water inlet of the hydropower station, so that the floating trash rack device covers the front part of the water inlet of the hydropower station and can move up and down following the height of the water surface;

[0007] The trash rack assembly comprises a floating mechanism and a trash rack body installed on one side of the floating mechanism, the trash rack body is arranged vertically, and connecting pieces are arranged on both sides of the outer edges of the floating mechanism, and the two ends of the connecting piece are respectively fixedly connected to the edges of the floating mechanisms of two adjacent trash rack assemblies, and the connecting piece can rotate in the vertical and horizontal directions, and a counterweight is also arranged on the end of the floating mechanism away from the trash rack;

[0008] The middle upper position of the trash rack body is connected to the buoy, so that the part of the trash rack body located above the water forms an upper rack body, and the part located under the water forms a lower rack body, and the height of the upper rack body is smaller than that of the lower rack body, and the grid density of the upper rack body is smaller than that of the lower rack body.

[0009] Furthermore, the floating mechanism comprises two buoys arranged in parallel, a connecting plate is arranged between the two buoys, the two buoys are respectively located at the edge positions of both sides of the trash rack, and the connecting piece is arranged on the outer side of each buoy.

[0010] Furthermore, the float is a vertically arranged strip structure, the interior of the float is hollow to form an air bag to provide buoyancy, the horizontal cross-section of the float is a teardrop-shaped structure, the thick end of which is connected to the trash rack body, and the thin end is connected to the counterweight; the connecting plate is horizontally arranged, and the connecting plate is connected to the top position of the float accordingly, so that the surface of the connecting plate and the top surface of the float form an integrated planar structure.

[0011] Furthermore, the connecting member includes a first fixed member, a second fixed member and a movable member, the first fixed member and the second fixed member are respectively fixedly mounted on opposite sides of the floating mechanisms in two adjacent trash rack assemblies, both ends of the movable member are rotatably connected to the first fixed member and the second fixed member, and the rotating surface formed by the movable member and the first fixed member is horizontal, and the rotating surface formed by the movable member and the second fixed member is vertical.

[0012] Furthermore, the counterweight comprises a connecting rope and a counterweight ball, one end of the connecting rope is fixedly connected to the bottom of the floating mechanism away from the end of the trash rack body, and the other end is connected to the counterweight ball, so that the counterweight ball is suspended below the floating mechanism.

[0013] Furthermore, the sides of the trash rack body corresponding to the floating mechanism are respectively provided with a plurality of groups of connecting mechanisms horizontally arranged in parallel, and the connecting mechanisms include a first connecting portion and a second connecting portion sequentially arranged from bottom to top;

[0014] The first connecting portion is a clamping head structure that is bent downward after being extended, and a clamping groove is correspondingly provided on the buoy so that the clamping head is just clamped in the clamping groove;

[0015] The second connecting part includes a horizontally arranged rotating rod and a lock buckle fixed to one end of the rotating rod. The other end of the rotating rod is rotatably connected to the trash rack body, so that the rotating rod and the lock buckle can rotate in the horizontal plane at the same time. A fixing rod is set at the top edge of the buoy, and the lock buckle is detachably connected to the fixing rod.

[0016] Furthermore, the movable assembly includes vertical guide rails arranged on the outer walls at both ends of the water inlet of the hydropower station and movable parts arranged at the ends of the two trash rack assemblies at the head and tail ends, and the movable parts can move freely in the vertical direction along the guide rails.

[0017] Furthermore, the guide rail is a vertical strip track with a T-shaped cross section, and the movable part includes a mounting sleeve with a concave cross section and a plurality of pulleys. The pulleys are rotatably arranged in pairs inside the mounting sleeve, so that the pulleys can be clamped in pairs on both sides of the track.

[0018] Furthermore, the guide rail is a vertical sliding rod, the movable part is a sliding sleeve mounted on the sliding rod, and the sliding sleeve is a floating structure that can move freely along the sliding rod following changes in the water surface.

[0019] Furthermore, the trash rack body is a curved structure, wherein the middle portion protrudes in the direction away from the floating mechanism to form a first protruding portion, and the positions near the two ends are recessed in the direction close to the floating mechanism, while the ends are bent downward in the direction away from the floating mechanism to form a second recessed portion.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention is a floating structure, which drives the trash rack body to float on the water surface through the floating mechanism, so that the trash rack assembly as a whole can move with the water level, so that the trash rack body always corresponds to the water surface position, so that the effective debris blocking function can be achieved regardless of the water level, and the problem of blocking failure caused by high or low water level will not occur;

[0022] 2. Since the trash rack body of the present invention can move with the water surface, it does not need to be set very high, so as to reach the upper and lower limit positions of the water level, thereby saving the equipment manufacturing cost;

[0023] 3. The trash rack body of the present invention is always at the height of the water surface, and the top of the trash rack protrudes out of the water surface, so that its condition can be directly observed by naked eyes. At the same time, the bottom part located underwater is not very deep, so it can be observed more simply by underwater cameras and other instruments, thereby greatly reducing the difficulty of inspection. At the same time, it is also convenient to take the trash rack body out of the water, reducing the difficulty of maintenance;

[0024] 4. The floating trash rack device of the present invention is composed of a plurality of trash rack assemblies connected in sequence, and the total length can be adjusted according to the size of the water inlet of the hydropower station, so as to adapt to hydropower stations of various sizes, without the need for targeted re-production, and is more convenient to use;

[0025] 5. The trash rack body of the present invention comprises an upper rack body on the water surface and a lower rack body under the water, wherein the height of the upper rack body is smaller than that of the lower rack body, and the grid density of the upper rack body is smaller than that of the lower rack body, so that the upper rack body can better intercept small-volume debris floating on the water surface, and the lower rack body can intercept large debris half-sunk in the water while ensuring sufficient water flow to avoid affecting the water supply of the water inlet of the hydropower station. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the connection between Example 1 of the present invention and the water inlet of a hydropower station.

[0027] Figure 2 This is a schematic top view of a trash rack assembly according to Embodiment 1 of the present invention.

[0028] Figure 3 This is a schematic diagram of a connecting piece in Example 1 of the present invention.

[0029] Figure 4 It is a side cross-sectional schematic diagram of the trash rack assembly in Example 1 of the present invention.

[0030] Figure 5 This is a schematic diagram of the mobile component in Example 1 of the present invention.

[0031] Figure 6 This is a schematic diagram of a moving component in Embodiment 2 of the present invention.

[0032] Figure 7 It is a front view of the trash rack body in Example 1 of the present invention.

[0033] In the above drawings: 100, trash rack assembly; 200, water inlet; 300, dam; 110, buoy; 120, connecting plate; 130, trash rack body; 140, connecting piece; 150, counterweight; 160, moving assembly; 111, buffer pad; 112, slot; 113, fixing rod; 131, clamping head; 132, rotating rod; 133, locking buckle; 134, upper grille; 135, lower grille; 136, reinforcing rib; 141, first fixing piece; 142, second fixing piece; 143, movable piece; 144, screw; 145, nut; 151, connecting rope; 152, counterweight ball; 161, bar track; 162, mounting sleeve; 163, pulley; 164, sliding rod; 165, sliding sleeve. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Embodiment 1:

[0036] like Figure 1 As shown, an embodiment of the present invention proposes a floating trash rack device, which is arranged in conjunction with a water inlet 200 of a hydropower station, and includes a plurality of trash rack assemblies 100 connected in sequence, and a moving assembly 160 is further arranged between the trash rack assemblies 100 located at the head end and the tail end respectively and the two end positions of the water inlet 200 of the hydropower station, so that the floating trash rack device covers the front part of the water inlet 200 of the hydropower station and can move up and down following the water surface height.

[0037] In the present embodiment, the water inlet 200 of the hydropower station is located at one edge of the hydropower station, one side of which is close to the shore dam 300, thereby forming an L-shaped bending structure. Therefore, six trash rack assemblies 100 are used in the present invention to form a curved chain structure, which are respectively connected to the end of the water inlet 200 and the side of the dam 300, so that the water inlet 200 is completely covered by the inner side of the floating trash rack device.

[0038] The moving assembly 160 includes vertical guide rails arranged on the outer walls of both ends of the water inlet 200 of the hydropower station and movable parts 143 arranged at the ends of the two trash rack assemblies 100, the movable parts 143 can freely move in the vertical direction along the guide rails. Figure 5 As shown, further, the guide rail is a vertical bar track 161 with a T-shaped cross section, and the movable member 143 includes a mounting sleeve 162 with a concave cross section and a plurality of pulleys 163, and the pulleys 163 are rotatably arranged in pairs inside the mounting sleeve 162, so that the pulleys 163 can be clamped in pairs on both sides of the track. Therefore, when the trash rack assembly 100 floats up and down, the pulleys 163 are also driven to slide along the track, ensuring that both ends of the trash rack assembly 100 are always at the same height as the water surface and keep the limit in the horizontal direction.

[0039] like Figure 2 As shown, the trash rack assembly 100 includes a floating mechanism and a trash rack body 130 installed on one side of the floating mechanism. The trash rack body 130 is vertically arranged, and the outer edges of the floating mechanism are provided with connectors 140. The two ends of the connectors 140 are respectively fixedly connected to the edges of the floating mechanisms of two adjacent trash rack assemblies 100, and the connectors 140 can rotate in the vertical and horizontal directions. Therefore, the whole connected by the trash rack assembly 100 can be rotated and adjusted in the horizontal plane to achieve arc-shaped encirclement. At the same time, the undulations caused by waves on the water surface can be buffered by vertical rotation, so as to avoid damage to adjacent trash rack assemblies 100 due to the torque applied by the waves.

[0040] As a common implementation, the floating mechanism can adopt a square pontoon structure, and the trash rack body 130 can be arranged on the side of the pontoon structure facing the incoming water direction. However, in this method, the pontoon structure needs to completely cross the front direction of the entire water inlet 200, blocking the water from above, resulting in the water flow only passing through the bottom to enter the water inlet 200, which will affect the water intake when a large amount of water is needed during the flood season.

[0041] In the preferred solution of this embodiment, the floating mechanism includes two buoys 110 arranged in parallel, a connecting plate 120 is arranged between the two buoys 110, the two buoys 110 are respectively located at the edges of both sides of the trash rack, and the connecting member 140 is arranged on the outer side of each buoy 110. In this way, a space for water flow to pass through is formed between the two buoys 110, thereby increasing the amount of water flow, and having better adaptability in high water levels and occasions requiring a large amount of water intake.

[0042] Furthermore, the buoy 110 is a vertically arranged strip structure, the interior of the buoy 110 is hollow to form an air bag to provide buoyancy, and the horizontal cross-section of the buoy 110 is a water drop-shaped structure, the thick end of which is connected to the trash rack body 130, and the thin end is connected to the counterweight 150; the connecting plate 120 is arranged horizontally, and the connecting plate 120 is correspondingly connected to the top position of the buoy 110, so that the surface of the connecting plate 120 and the top surface of the buoy 110 form an integrated plane structure. According to fluid mechanics, the thick end of the water drop-shaped structure has the smallest resistance when facing the incoming water direction, so it can reduce the impact of the water flow on the buoy 110, and avoid the damage of the trash rack assembly 100 caused by the high-intensity water flow impact when there is a large amount of water. After the connecting plate 120 and the top surface of the buoy 110 form an integrated structure, a floating bridge structure can be formed above the trash rack assembly 100, so that maintenance personnel can pass through it more conveniently, observe and inspect the trash rack body 130 at a close distance, and also facilitate maintenance of the trash rack body 130.

[0043] like Figure 3As shown, the connecting member 140 includes a first fixing member 141, a second fixing member 142 and a movable member 143. The first fixing member 141 and the second fixing member 142 are respectively fixedly mounted on the sides opposite to the floating mechanisms of two adjacent trash rack assemblies 100. The two ends of the movable member 143 are respectively rotatably connected with the first fixing member 141 and the second fixing member 142, and the rotating surface formed by the movable member 143 and the first fixing member 141 is horizontal, and the rotating surface formed by the movable member 143 and the second fixing member 142 is vertical. In this embodiment, the first fixing member 141 and the second fixing member 142 are both parallel triangular plate structures, and a rotating shaft is provided between the two triangular plates, and the movable member 143 is a rotating rod 132, and the two ends of the rotating rod 132 are respectively penetrated by the rotating shaft to realize the rotation connection. Preferably, one of the rotating shafts is composed of a screw 144 and a nut 145, which is a detachable structure, so as to more conveniently realize the connection and separation of the two trash rack assemblies 100, and to adapt to different sizes of the water inlet 200 for adjustment.

[0044] The two buoys 110 on the trash rack assembly 100 are further provided with cushion pads 111 on opposite sides thereof, that is, the cushion pads 111 on the adjacent buoys 110 in two adjacent trash rack assemblies 100 are arranged opposite to each other, so that when the trash rack assemblies 100 are impacted by waves and collide with each other, the cushion pads 111 are contacted first to buffer the collision force, thereby reducing the probability of damage to the buoys 110 due to the collision. In this embodiment, the cushion pads 111 are made of sponge.

[0045] like Figure 4 As shown, a counterweight 150 is also provided at one end of the floating mechanism away from the trash rack. In this embodiment, since the floating mechanism is a buoy 110 structure, the counterweight 150 is also provided corresponding to the two buoys 110. Specifically, the counterweight 150 includes a connecting rope 151 and a counterweight ball 152. One end of the connecting rope 151 is fixedly connected to the bottom of the end of the buoy 110 away from the trash rack body 130, and the other end is connected to the counterweight ball 152, so that the counterweight ball 152 is suspended below the floating mechanism. In order to improve the strength, the connecting rope 151 can be made of a steel chain or cable. The way of setting the counterweight ball 152 through the connecting rope 151 extends the force arm from the counterweight ball 152 to the buoy 110, so that a lighter counterweight ball 152 can be provided to complete the counterweight balance of the trash rack body 130.

[0046] like Figure 7As shown, the middle upper position of the trash rack body 130 is connected to the buoy 110, so that the part of the trash rack body 130 located above the water forms an upper rack body, and the part located under the water forms a lower rack body, and the height of the upper rack body is less than that of the lower rack body, and the grid density of the upper rack body is less than that of the lower rack body. Therefore, the upper rack body can better intercept small-volume debris floating on the water surface, and the lower rack body can intercept large debris half-sunk in the water while ensuring sufficient water flow to avoid affecting the water supply of the water inlet 200 of the hydropower station. In order to maintain the strength of the trash rack body 130, horizontal reinforcing ribs 136 are respectively provided at the connection between the upper rack body and the lower rack body and the middle part of the upper rack body.

[0047] like Figure 4 As shown, in a further solution, the trash rack body 130 is respectively provided with a plurality of groups of horizontally parallelly distributed connection mechanisms on the side of the corresponding floating mechanism. Since the floating mechanism of this embodiment is two buoys 110, a group of connection mechanisms is respectively provided on the thick end faces of the two buoys 110. The connection mechanism includes a first connection part and a second connection part which are sequentially arranged from bottom to top; the first connection part is a clamping head 131 structure which is bent downward after being extended, and a clamping groove 112 is correspondingly arranged on the buoy 110, so that the clamping head 131 is just clamped in the clamping groove 112; the second connection part includes a horizontally arranged rotating rod 132 and a lock buckle 133 fixed to one end of the rotating rod 132, and the other end of the rotating rod 132 is rotatably connected to the trash rack body 130, so that the rotating rod 132 and the lock buckle 133 can rotate in the horizontal plane at the same time, and a fixed rod 113 is arranged on the top edge of the buoy 110, and the lock buckle 133 is detachably connected to the fixed rod 113. During installation, first insert the first connection part into the slot 112 so that the two fit closely together, and then rotate the rotating rod 132 and buckle the lock 133 to the outside of the fixed rod 113 while maintaining the trash rack body 130 in a vertical state. In this embodiment, the lock 133 is a spring lock 133 structure, similar to a keychain, which can be opened by manual rotation to achieve detachable installation. After installation, the first connection part and the slot 112 are limited in the horizontal direction, and the second connection part and the fixed rod 113 are limited in the vertical direction, so that the trash rack body 130 is completely fixed.

[0048] In addition, in this embodiment, the trash rack body 130 is a curved structure, the middle part of which is convex in the direction away from the floating mechanism to form a first convex part, and the positions near the two ends are concave in the direction close to the floating mechanism, and the ends of the two ends are bent downward in the direction away from the floating mechanism to form a second concave part. When the debris in the water is intercepted by the trash rack body 130, the first convex part can move the debris to both sides, so as to accumulate in the second concave part, so as to avoid the problem of blocking the entire trash rack body 130 when there is a large amount of debris, thereby affecting the passage of water.

[0049] Embodiment 2:

[0050] like Figure 6 As shown, the rest of the present embodiment is the same as that of embodiment 1, except that:

[0051] In the moving assembly 160, the guide rail is a vertical sliding rod 164, and the movable member 143 is a sliding sleeve 165 sleeved on the sliding rod 164. The sliding sleeve 165 is a floating structure and can move freely along the sliding rod 164 following the change of the water surface. In this way, the movable member 143 itself is a floating structure, which can always move up and down and float on the water surface according to the change of the water level, without moving up and down due to the driving of the trash rack assembly 100, so as to avoid the problem of the pulley 163 and other structures being rusted and stuck due to long-term contact with water.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A floating trash rack device, which is arranged in conjunction with a water inlet of a hydropower station to block floating objects on the water, and is characterized by: It comprises a plurality of trash rack assemblies connected in sequence, and movable assemblies are arranged between the trash rack assemblies located at the head end and the tail end and the two ends of the water inlet of the hydropower station, so that the floating trash rack device covers the front part of the water inlet of the hydropower station and can move up and down with the water level; The trash rack assembly comprises a floating mechanism and a trash rack body installed on one side of the floating mechanism, the trash rack body is arranged vertically, and connecting pieces are arranged on both sides of the outer edges of the floating mechanism, and the two ends of the connecting piece are respectively fixedly connected to the edges of the floating mechanisms of two adjacent trash rack assemblies, and the connecting piece can rotate in the vertical and horizontal directions, and a counterweight is also arranged on the end of the floating mechanism away from the trash rack; The middle upper position of the trash rack body is connected to the buoy, so that the part of the trash rack body located above the water forms an upper rack body, and the part located under the water forms a lower rack body, and the height of the upper rack body is smaller than that of the lower rack body, and the grid density of the upper rack body is smaller than that of the lower rack body.

2. A floating trash rack device according to claim 1, characterized in that: The floating mechanism comprises two buoys arranged in parallel, a connecting plate is arranged between the two buoys, the two buoys are respectively located at the edge positions of both sides of the trash rack, and the connecting piece is arranged on the outer side of each buoy.

3. A floating trash rack device according to claim 2, characterized in that: The buoy is a vertically arranged strip structure, the interior of the buoy is hollow to form an air bag to provide buoyancy, the horizontal cross-section of the buoy is a teardrop-shaped structure, the thick end of which is connected to the trash rack body, and the thin end is connected to the counterweight; the connecting plate is horizontally arranged, and the connecting plate is connected to the top position of the buoy correspondingly, so that the surface of the connecting plate and the top surface of the buoy form an integrated planar structure.

4. A floating trash rack device according to claim 1, characterized in that: The connecting member includes a first fixing member, a second fixing member and a movable member, wherein the first fixing member and the second fixing member are respectively fixedly mounted on opposite sides of the floating mechanisms in two adjacent trash rack assemblies, and both ends of the movable member are rotatably connected to the first fixing member and the second fixing member, respectively, and a rotating surface formed by the movable member and the first fixing member is horizontal, and a rotating surface formed by the movable member and the second fixing member is vertical.

5. A floating trash rack device according to claim 1, characterized in that: The counterweight comprises a connecting rope and a counterweight ball. One end of the connecting rope is fixedly connected to the bottom of the floating mechanism away from the end of the trash rack body, and the other end is connected to the counterweight ball, so that the counterweight ball is suspended below the floating mechanism.

6. A floating trash rack device according to claim 1, characterized in that: The trash rack body is provided with a plurality of groups of connecting mechanisms arranged horizontally and in parallel on the side surfaces corresponding to the floating mechanism, and the connecting mechanisms include a first connecting portion and a second connecting portion arranged in sequence from bottom to top; The first connecting portion is a clamping head structure that bends downward after being extended, and a clamping groove is correspondingly provided on the buoy so that the clamping head is just clamped in the clamping groove; The second connecting part includes a horizontally arranged rotating rod and a lock buckle fixed to one end of the rotating rod. The other end of the rotating rod is rotatably connected to the trash rack body, so that the rotating rod and the lock buckle can rotate in the horizontal plane at the same time. A fixing rod is set at the top edge of the buoy, and the lock buckle is detachably connected to the fixing rod.

7. A floating trash rack device according to claim 1, characterized in that: The moving assembly comprises vertical guide rails arranged on the outer walls at both ends of the water inlet of the hydropower station and movable parts arranged at the ends of the two trash rack assemblies at the head and tail ends, and the movable parts can freely move in the vertical direction along the guide rails.

8. A floating trash rack device according to claim 7, characterized in that: The guide rail is a vertical strip track with a T-shaped cross section. The movable part includes a mounting sleeve with a concave cross section and a plurality of pulleys. The pulleys are rotatably arranged in pairs inside the mounting sleeve so that the pulleys can be clamped in pairs on both sides of the track.

9. A floating trash rack device according to claim 7, characterized in that: The guide rail is a vertical sliding rod, the movable part is a sliding sleeve sleeved on the sliding rod, and the sliding sleeve is a floating structure and can move freely along the sliding rod following the change of the water surface.

10. A floating trash rack device according to claim 1, characterized in that: The trash rack body is a curved structure, the middle part of which protrudes toward the direction away from the floating mechanism to form a first protruding part, and the positions near the two ends are recessed toward the direction close to the floating mechanism, and the ends are bent downwardly away from the floating mechanism to form a second recessed part.

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