Automatic remote slag removal device for dam bottom fence

Abstract

The present invention discloses an automatic remote slag cleaning device for a dam bottom fence, which includes a fence frame, an upper end of which is laid with parallel fence bars, and two sides of which are provided with moving slide rails parallel to the fence bars, and two rollers are rotatably connected to the inner rail plate of the moving slide rail; a cleaning rake, which includes a rotating shaft cylinder and rake teeth, and a movable plate 1 is rotatably installed at both ends of the rotating shaft cylinder, and the movable plate 1 is rotatably assembled with the rollers on its corresponding side, and the rake teeth are arranged in a single row on the outer wall of the rotating shaft cylinder, and the cylinder walls at both ends of the rotating shaft cylinder are also fixed with U-shaped seats 2, and radial guide strip holes are provided in the U-shaped seats 2; a regulating mechanism, which includes an oil cylinder fixed at one end of the moving slide rail, a thrust head slidably connected to the moving slide rail is fixed at the output end of the oil cylinder, and a push column movably connected and embedded in the guide strip hole is fixed on the thrust head; and a drainage mechanism is installed between the movable plates 1 on both sides.

Description

Technical Field

[0001] The invention relates to the technical field of sewage cleaning in hydropower stations, in particular to an automatic remote slag cleaning device for a dam bottom fence. Background Art

[0002] Debris and gravel mixed in the river water can easily clog the dam's bottom barrier when passing through the water intake, severely impacting water flow into the channel. If not cleared promptly, this can severely impact the unit's output. Traditionally, cleaning this debris involves waiting for the floodwaters to recede and then manually removing it. However, this requires waiting until the water level drops below a safe level before cleaning can begin. During the annual flood season, these surges can persist for days, significantly impacting power generation efficiency.

[0003] To prevent sand and gravel from clogging the connecting tunnels, the power station's channel inlet and sand-flushing gates must be frequently operated based on the dam water level and channel inlet level. Water level monitoring and gate operation must be performed day and night, regardless of whether it's raining or sunny. This is labor-intensive and poses significant safety risks. With the aging of the power station's workforce and a severe shortage of hydraulic operators, remote gate operation and water level monitoring are imperative.

[0004] An investigation of years of operational records revealed that when overflows from this river dam exceed the dam height by more than 40 centimeters, a large amount of river debris and gravel will clog the trash rack, causing the water intake to plummet to less than half its original capacity. As the water flow rate into the channel decreases, large amounts of river sand begin to accumulate, gradually blocking the entire intake tunnel and causing unit shutdowns. During flood season, whenever the water level exceeds 40 centimeters, the inlet gates must be closed. Only after the floodwaters recede to below the safety line can the trash rack be manually cleaned before the gates can be reopened, seriously impacting production safety. Secondly, manual cleaning is a safety issue. Manual cleaning is required only when the water level drops below 40 centimeters, and even with a 40-centimeter current, cleaning operations are extremely dangerous. Life jackets and safety harnesses are mandatory, and even the slightest effort in the turbulent water can lead to falls. Cleaning tools can also become unresponsive under the force of the current, often causing accidental injuries and posing a significant safety hazard.

[0005] Therefore, those skilled in the art have provided an automatic remote slag cleaning device for the dam bottom fence to solve the problems raised in the above background technology. Summary of the Invention

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an automatic remote slag cleaning device for a dam bottom fence, comprising:

[0007] The fence frame has parallel fence bars on its upper end, and motion rails parallel to the fence bars are provided on both sides thereof, and two rollers are rotatably connected to the inner rail plates of the motion rails;

[0008] A cleaning rake comprises a rotating shaft cylinder and rake teeth. A movable plate 1 is rotatably mounted on each end of the rotating shaft cylinder. The movable plate 1 is rotatably coupled to a roller on the corresponding side. The rake teeth are arranged in a single row on the outer wall of the rotating shaft cylinder. A U-shaped seat 2 is fixed to the cylinder wall at both ends of the rotating shaft cylinder. The U-shaped seat 2 is provided with a radial guide bar hole.

[0009] The regulating mechanism includes an oil cylinder fixed to one end of the moving slide rail, a thrust head slidably connected to the moving slide rail fixed to the output end of the oil cylinder, and a push column movably connected and embedded in the guide bar hole fixed to the thrust head; and

[0010] The drainage mechanism is installed between the movable plates on both sides.

[0011] Furthermore, preferably, the cleaning rakes are arranged in parallel into N groups, and U-shaped seats 1 are provided at the same position on adjacent cleaning rakes, and connecting plates are hingedly installed between the U-shaped seats 1 at the same position.

[0012] Furthermore, preferably, when the thrust head moves in the direction of water flow, the thrust head is movably connected to the outer end of the guide bar hole, and the tips of the rake teeth are vertically upward.

[0013] Furthermore, preferably, when the thrust head moves against the direction of water flow, the thrust head is movably connected to the inner end of the guide bar hole, and the tips of the rake teeth are lower than the water-facing surface of the fence bar.

[0014] Furthermore, preferably, a dirt shield is provided at the upper end of the moving slide rail.

[0015] Furthermore, preferably, the drainage mechanism includes:

[0016] The fixed guide rail is arranged parallel to the fence bars, and its two ends are respectively connected and fixed to the fence frame;

[0017] A rotary control seat is slidably connected to the fixed guide rail, and a drainage fan is installed on the upper end of the rotary control seat; and

[0018] The two ends of the movable plate 2 are connected and fixed on the movable plate 1 on both sides, and a U-shaped seat 3 connected with the rotation control seat is fixed on the plate surface.

[0019] Furthermore, as a preference, the fixed guide rail includes a concave guide rail and a right-angle guide rail, the concave guide rail notch faces a right-angle guide rail which is symmetrical up and down, and forms an upper guide bar hole one, a lower guide bar hole three and a guide bar hole two close to the side of the U-shaped seat three.

[0020] Furthermore, preferably, the rotation control seat includes:

[0021] The concave slide plate has a notch bottom and a notch end which are slidably connected to the right-angle guide rail and the concave guide rail respectively, and a convex column for cooperating and fixing with the U-shaped seat is fixed on the outer plate surface of the notch bottom;

[0022] The rotating shell covers penetrate the upper plate of the concave slide and are rotatably connected thereto, the upper end of the rotating shell covers is used to cooperate with and fix the airflow fan, and the outer side of the lower end of the rotating shell covers is fixed with a gear ring;

[0023] A straight rack is arranged pointing toward the concave guide rail and fixed on the bottom rail surface of the concave guide rail notch; and

[0024] The braking system is used to brake the rotating shell cover during rotation.

[0025] Furthermore, preferably, the braking system includes:

[0026] The rough ring, whose outer ring wall is assembled on the inner side of the rotating shell through a one-way bearing, rotates synchronously with the rotating shell when the water flow impacts the drainage fan;

[0027] A straight slide groove is symmetrically arranged on the lower side plate of the concave slide, and a straight slide bar is slidably connected therein, a side shell seat is fixed to the upper end of the straight slide bar, a friction plate is fixed to the outer side of the side shell seat, a top plate is fixed to the inner side of the side shell seat, and a contraction spring is also connected between the side shell seats on both sides; and

[0028] The miniature expander is embedded in the lower side plate of the concave slide, and a cone column is fixed on the output end of the miniature expander.

[0029] Furthermore, preferably, when the gear ring is engaged with the spur rack and moves along the spur rack in the direction of water flow, the gear ring drives the drainage fan to rotate in a direction opposite to the direction of rotation when the drainage fan is impacted by the water flow.

[0030] Compared with the prior art, the present invention provides an automatic remote slag removal device for the dam bottom fence, which has the following beneficial effects:

[0031] 1. The present invention uses a hydraulic cylinder drive method and cooperates with the sliding hole technology to drive a movable cleaning rake arranged on the back side of the fence bar to simulate manual cleaning of the fence bar. There is no need to change the original hydraulic structure, which is convenient to implement; through remote monitoring and automatic operation, unmanned operation is achieved, which improves the working environment of employees, saves labor costs, eliminates safety hazards during operation, and makes remote water level inspection and remote control of gates more efficient and flexible; it is suitable for use in small and medium-sized run-of-river bottom fence dams, with low investment cost, easy installation, and obvious slag cleaning effect.

[0032] 2. The present invention effectively improves the effect and efficiency of removing debris from the fence bars by setting up the regulating mechanism and the drainage mechanism, thereby solving the problem of debris blocking the trash rack during flood season, which causes a sharp drop in water inflow into the channel and affects power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the slag cleaning device of the present invention;

[0034] Figure 2 Schematic diagram of the drainage mechanism structure of the present invention;

[0035] Figure 3 It is a schematic diagram of the partial structure of the control mechanism of the present invention;

[0036] Figure 4 It is a schematic diagram of the partial structure of the rotary control seat of the present invention;

[0037] Figure 5 It is a partial cross-sectional structural diagram of the rotary control seat of the present invention;

[0038] Figure: 1, fence frame; 2, moving slide rail; 3, movable plate 1; 4, cleaning rake; 5, regulating mechanism; 6, drainage mechanism; 7, dirt shield; 31, roller; 41, U-shaped seat 1; 42, connecting plate; 43, rake teeth; 44, U-shaped seat 2; 45, guide bar hole; 51, oil cylinder; 52, thrust head; 53, push column; 61, fixed guide rail; 62, rotating control seat; 63, drainage fan; 64, movable plate 2; 611, guide bar hole 1; 61 2. Guide bar hole two; 613. Guide bar hole three; 621. Concave slide; 622. Boss; 623. Rotating shell cover; 624. Gear ring; 625. Straight rack; 626. One-way bearing; 627. Rough ring; 628. Friction plate; 629. Side shell seat; 6210. Straight slide bar; 6211. Straight slide groove; 6212. Contraction spring; 6213. Conical column; 6214. Micro telescope; 6215. Top plate; 641. U-shaped seat three. DETAILED DESCRIPTION

[0039] Reference Figure 1-5 The present invention provides a technical solution: an automatic remote slag cleaning device for a dam bottom fence, which comprises:

[0040] The fence frame 1 has parallel fence bars on its upper end, and movable slide rails 2 parallel to the fence bars are provided on both sides thereof, and two rollers 31 are rotatably connected to the inner rail plates of the movable slide rails 2;

[0041] The cleaning rake 4 includes a rotating shaft cylinder and rake teeth 43. A movable plate 3 is rotatably mounted on each end of the rotating shaft cylinder. The movable plate 3 is rotatably coupled to the roller 31 on the corresponding side. The rake teeth 43 are arranged in a single row on the outer wall of the rotating shaft cylinder. U-shaped seats 44 are also fixed to the cylinder walls at both ends of the rotating shaft cylinder. The U-shaped seats 44 are provided with radial guide bar holes 45. The main body of the cleaning rake is made of galvanized flat steel.

[0042] The regulating mechanism 5 includes a cylinder 51 fixed to one end of the moving slide rail 2, a thrust head 52 slidably connected to the moving slide rail 2 fixed to the output end of the cylinder 51, and a push column 53 movably connected and embedded in the guide bar hole 45 fixed to the thrust head 52; and

[0043] The drainage mechanism 6 is installed between the movable plates 3 on both sides;

[0044] It also includes a remote monitoring automatic control system for controlling the control mechanism 5, so as to realize unmanned operation, improve the working environment of employees, eliminate safety hazards during operation, and is also used for water level measurement and operation status data collection under large-flow water flow conditions, so as to be able to remotely and timely understand the water level conditions and operation status and perform timely maintenance. In addition, the installation and layout of the control mechanism needs to avoid flood-prone areas to prevent flood damage to equipment and ensure normal operation under extreme conditions.

[0045] In this embodiment, the cleaning rakes 4 are arranged in parallel into N groups, and a U-shaped seat 41 is provided at the same position on adjacent cleaning rakes 4, and a connecting plate 42 is hingedly installed between the U-shaped seats 41 at the same position. Specifically, the number of cleaning rakes is determined according to the length of the fence bars of the fence frame 1 and the number of reinforcing ribs between the fence bars, which is generally two to three. In this embodiment, the cleaning rakes are arranged into 3 groups.

[0046] In this embodiment, when the thrust head 52 moves in the direction of water flow, the thrust head 52 is movably connected to the outer end of the guide bar hole 45, and the rake tooth tips are vertically upward, and the rake tooth tips protrude 2-3 cm from the water surface of the fence bar.

[0047] In this embodiment, when the thrust head 52 moves against the direction of the water flow, the thrust head 52 is movably connected to the inner end of the guide bar hole 45, and the tip of the rake teeth is lower than the water-facing surface of the fence bar. Figure 1-3 In the state shown, the tips of the rake teeth are lower than the water-facing surface of the fence bars;

[0048] Specifically, when the cleaning rake 4 moves in the direction of the water flow (cleaning work), the rake teeth on the cleaning rake 4 are vertically upward, that is, the thrust head 52 is now movably located in the outer end of the guide bar hole 45, and the rake teeth protrude 2-3 cm from the water-facing surface of the fence bar. In this way, the debris attached to the fence bar is moved downstream or washed into the downstream river channel under the combined action of the rake teeth and the water flow; when the cleaning rake 4 moves against the water flow, the rake teeth on the cleaning rake 4 rotate 30 degrees against the water flow (based on the tooth tips being lower than the water-facing surface of the fence bar). In this way, the debris on the downstream part of the fence bar will not be brought to the upstream part, thereby preventing the debris from moving back and forth on the fence bar, resulting in low cleaning efficiency or even incomplete cleaning.

[0049] That is to say, when the thrust head 52 moves in the direction of the water flow, the rake teeth on the cleaning rake 4 first rotate to the vertical direction in the direction of the water flow, and the cleaning rake 4 continues to move in the downstream direction. During this process, the rake teeth always maintain a vertical state until the cleaning rake 4 moves in the downstream direction to the downstream end of the fence bar, and the oil cylinder retracts. At this time, the rake teeth on the cleaning rake 4 first rotate 30 degrees in the countercurrent direction, and the tooth tips are lower than the water-facing surface of the fence bar. The cleaning rake 4 continues to move in the upstream direction, thus forming a cleaning process. This reciprocating process is repeated 2-3 times to clean up the debris on the fence bar.

[0050] In addition, when the cleaning rake 4 is on standby, the cleaning rake 4 stays at the uppermost end of the fence bar. Figure 1 In the state shown, the rake teeth are lower than the water-facing surface of the fence bars, which will neither hinder the natural flow of debris and stones along the water flow, nor cause a safety threat to the workers because the tooth tips are higher than the fence bars.

[0051] In this embodiment, a dirt shield 7 is further provided at the upper end of the moving slide rail 2 .

[0052] In this embodiment, the drainage mechanism 6 includes:

[0053] The fixed guide rail 61 is arranged parallel to the fence bar, and its two ends are respectively connected and fixed to the fence frame 1;

[0054] A rotary control seat 62 is slidably connected to the fixed guide rail 61, and a drainage fan 63 is installed on the upper end thereof; and

[0055] The two ends of the movable plate 2 64 are connected and fixed to the movable plate 1 3 on both sides, and a U-shaped seat 3 641 connected to the rotation control seat 62 is fixed on the plate surface. Therefore, when the movable plate 1 moves, it can drive the movable plate 2 to move synchronously, and then drive the rotation control seat 62 to move along the direction of the fence bar, thereby changing the position of the drainage fan 63 below the fence bar.

[0056] In this embodiment, the fixed guide rail 61 includes a concave guide rail and a right-angle guide rail. The concave guide rail notch is oriented toward a right-angle guide rail that is symmetrical up and down, and forms an upper guide bar hole 1 611, a lower guide bar hole 3 613, and a guide bar hole 2 612 close to the side of the U-shaped seat 3 641.

[0057] In this embodiment, the rotation control seat 62 includes:

[0058] The concave slide plate 621 has a notch bottom and a notch end slidably connected to the right-angle guide rail and the concave guide rail respectively, and a protruding column 622 for cooperating and fixing with the U-shaped seat 3 641 is fixed on the outer plate surface of the notch bottom;

[0059] The rotating shell 623 passes through the upper plate of the concave slide 621 and is rotatably connected thereto. The upper end thereof is used to cooperate with and fix the airflow fan 63, and the outer fixed sleeve of the lower end thereof is provided with a gear ring 624. Figure 4 When the rotating shell cover 623 is in this position, the cleaning rake 4 is also in the standby state. At this time, the drainage fan 63 will rotate and drain automatically under the impact of the water flow;

[0060] A spur rack 625 is arranged facing the concave guide rail and fixed on the bottom rail surface of the concave guide rail notch, and the spur rack 625 can mesh with the gear ring 624; and

[0061] The braking system is used to brake the rotating shell 623 during rotation. It should be explained that when the cleaning rake 4 starts the cleaning work, the rotation speed of the rotating shell 623 is reduced to stop rotation through the braking system so that the gear ring and the spur rack 625 engage with each other.

[0062] In this embodiment, the braking system includes:

[0063] The outer ring wall of the rough ring 627 is assembled on the inner side of the rotating shell 623 through the one-way bearing 626. When the water flow impacts the drainage fan 63 and rotates, the rough ring 627 rotates synchronously with the rotating shell 623.

[0064] The straight slide groove 6211 is symmetrically arranged on the lower side plate of the concave slide plate 621, and a straight slide bar 6210 is slidably connected therein. The upper end of the straight slide bar 6210 is fixed to a side shell seat 629, the outer side of the side shell seat 629 is fixed to a friction plate 628, the inner side of the side shell seat 629 is fixed to a top plate 6215, and a contraction spring 6212 is further connected between the side shell seats 629 on both sides; and

[0065] The miniature telescopic device 6214 is embedded in the lower side plate of the concave slide 621, and a cone 6213 is fixed on its upper output end;

[0066] It should be explained that in this structure, the micro-expanding device drives the cone column to expand the top plate, so that the friction plate and the rough ring generate friction and continue to increase, braking the drainage fan. After that, the movable plate 2 can drive the rotation control seat 62 to move, and the gear ring can engage with the straight rack. During the above process, the drainage fan is in a stopped state. After the engagement is completed, the gear ring can move along the direction of the straight rack, and with the action of the one-way bearing, the gear ring can rotate on its own. Among them, when the drainage fan moves in the direction of the water flow, the cone column expands the top plate in real time. When the drainage fan moves in the direction against the water flow, the micro-expanding device drives the cone column to reset, so that the friction plate and the rough ring are disengaged from each other, so that the gear ring can engage with the straight rack for transmission.

[0067] That is to say, during the process of meshing transmission between the gear ring and the spur rack, the rotation speed of the drainage fan is controlled by the movement rate of the movable plate 2, and the rotation speed of the drainage fan at this time is much lower than the rotation speed when the drainage fan is impacted by the water flow. Therefore, during this process, the drainage fan will have a flow-blocking effect on the fluid flowing under the fence bars. Therefore, during the cleaning process of the cleaning rake, the fluid pressure on the lower end side / at the fence bars can be increased, and the impact intensity of the water flow on the debris on the upper end of the fence bars is increased, thereby improving the cleaning effect and efficiency.

[0068] In addition, a speed monitor is provided for monitoring the speed of the drainage fan. It is mainly used when the cleaning rake is in standby mode. By monitoring the speed of the drainage fan, the degree of debris accumulation on the upper end of the fence bar can be known in real time. That is, the slower the speed, the lower the fluid flow rate, and the more debris accumulates on the upper end of the fence bar.

[0069] In this embodiment, when the gear ring 624 is engaged with the spur rack 625 and moves along the spur rack 625 in the direction of water flow, the gear ring 624 drives the drainage fan 63 to rotate in the opposite direction to the rotation direction when it is impacted by the water flow, so as to improve the cleaning process of the cleaning rake, further strengthen the increment of the fluid pressure on the lower end side / at the fence bar, and enhance the cleaning effect.

[0070] During specific implementation, the appropriate number of cleaning rakes required for installation is selected according to the length of the fence bars of the fence frame 1 and the number of reinforcing ribs between the fence bars, and then the fence frame, cleaning rake, control mechanism and drainage mechanism 6 are pre-installed, and then the control structure is connected to the remote monitoring automatic control system. By monitoring the speed of the drainage fan, the operation of the control mechanism is actively controlled, or the start-up method of the control structure is controlled by a timed start-up method, so that the debris on the upper end of the fence bars can be monitored and removed.

[0071] The above description is only a preferred specific embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Automatic remote slag removal device for dam bottom fence, characterized by: It includes: A fence frame (1) is provided with parallel fence bars on its upper end, and movable slide rails (2) parallel to the fence bars are provided on both sides thereof, and two rollers (31) are rotatably connected to the inner rail plates of the movable slide rails (2); A dirt cleaning rake (4) includes a rotating shaft cylinder and rake teeth (43). A movable plate (3) is rotatably mounted on both ends of the rotating shaft cylinder. The movable plate (3) is rotatably coupled with a roller (31) on its corresponding side. The rake teeth (43) are arranged in a single row on the outer wall of the rotating shaft cylinder. U-shaped seats (44) are also fixed to the cylinder walls at both ends of the rotating shaft cylinder. A radial guide bar hole (45) is provided in the U-shaped seat (44). A regulating mechanism (5) includes an oil cylinder (51) fixed to one end of the moving slide rail (2), a thrust head (52) slidably connected to the moving slide rail (2) fixed to the output end of the oil cylinder (51), and a push column (53) movably connected and embedded in the guide bar hole (45) fixed to the thrust head (52); A drainage mechanism (6) is installed between the movable plates (3) on both sides; The drainage mechanism (6) comprises: A fixed guide rail (61) is arranged parallel to the fence bars, and its two ends are respectively connected and fixed to the fence frame (1); A rotary control seat (62) is slidably connected to the fixed guide rail (61), and a drainage fan (63) is installed on the upper end of the rotary control seat (62); The two ends of the movable plate 2 (64) are connected and fixed to the movable plate 1 (3) on both sides, and a U-shaped seat 3 (641) connected to the rotation control seat (62) is fixed on the plate surface; The rotation control seat (62) includes: The concave slide plate (621) has a notch bottom and a notch end respectively connected to the right-angle guide rail and the concave guide rail, and a protruding column (622) for cooperating and fixing with the U-shaped seat three (641) is fixed on the outer plate surface of the notch bottom; The rotating shell (623) passes through the upper plate of the concave slide (621) and is rotatably connected thereto, the upper end of which is used to cooperate with and fix to the air guide fan (63), and the outer side of the lower end of which is fixedly sleeved with a gear ring (624); A straight rack (625) is arranged pointing toward the concave guide rail and fixed on the bottom rail surface of the concave guide rail notch; A braking system is used to brake the rotating housing (623) during rotation.

2. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: The cleaning rakes (4) are arranged in parallel into N groups, and U-shaped seats (41) are provided at the same positions on adjacent cleaning rakes (4), and connecting plates (42) are hingedly installed between the U-shaped seats (41) at the same positions.

3. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: When the thrust head (52) moves in the direction of the water flow, the thrust head (52) is movably connected to the outer end of the guide bar hole (45), and the tips of the rake teeth are vertically upward.

4. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: When the thrust head (52) moves against the direction of water flow, the thrust head (52) is movably connected to the inner end of the guide bar hole (45), and the tips of the rake teeth are lower than the water-facing surface of the fence bar.

5. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: The upper end of the moving slide rail (2) is also provided with a dirt shield (7).

6. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: The fixed guide rail (61) includes a concave guide rail and a right-angle guide rail. The concave guide rail notch faces the right-angle guide rail that is symmetrical up and down, and forms an upper guide bar hole 1 (611), a lower guide bar hole 3 (613), and a guide bar hole 2 (612) close to the side of the U-shaped seat 3 (641).

7. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: The braking system comprises: The outer ring wall of the rough ring (627) is assembled on the inner side of the rotating shell (623) through a one-way bearing (626). When the water flow impacts the drainage fan (63) and rotates, the rough ring (627) and the rotating shell (623) rotate synchronously. A straight slide groove (6211) is symmetrically arranged on the lower side plate of the concave slide plate (621), and a straight slide bar (6210) is slidably connected therein. A side shell seat (629) is fixed to the upper end of the straight slide bar (6210), a friction plate (628) is fixed to the outer side of the side shell seat (629), and a top plate (6215) is fixed to the inner side of the side shell seat (629). A contraction spring (6212) is also connected between the side shell seats (629) on both sides. The micro-expander (6214) is embedded in the lower side plate of the concave slide (621), and a cone column (6213) is fixed on the output end thereof.

8. The automatic remote slag removal device for the dam bottom fence according to claim 1 is characterized in that: When the gear ring (624) is engaged with the spur rack (625) and moves along the spur rack (625) in the direction of water flow, the gear ring (624) drives the diversion fan (63) to rotate in a direction opposite to the direction of rotation when it is impacted by the water flow.

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