Automatic submerged chain conveyor for hydropower station

Abstract

The utility model belongs to the field of hydropower station guarantee equipment, and particularly relates to an automatic submerged chain conveyor for a hydropower station, which comprises a rack and is characterized by further comprising a submerged chain dragging rake driven by a submerged chain dragging driving mechanism, a deslagging rake driven by a deslagging driving mechanism and a tooth rake guide mechanism, a T-shaped guide groove is vertically arranged at the front end of the rack, an opening of the T-shaped guide groove faces forwards, and the tooth rake guide mechanism is arranged on the rack. The slag salvaging rake comprises a handle rod and a rake head installed at the bottom end of the handle rod, the slag salvaging driving mechanism comprises a lifting driving device and a swing driving device, the lifting driving device comprises a lifting frame, a T-shaped guide rail and a vertical rack are arranged on the lifting frame, and the swing driving device comprises an ejector rod, a first hydraulic oil cylinder, a return spring and a swing limiting rod. According to the automatic slag discharging device, manual operation is replaced by a machine, the working efficiency can be improved, the production safety risk can be reduced, and the automatic slag discharging device has the advantages of being simple in structure and easy to maintain.

Description

Technical Field

[0001] The utility model belongs to the field of hydropower station support equipment, and in particular relates to an automatic slag scooping machine for a hydropower station. Background Art

[0002] Hydropower stations need to be equipped with salvage devices at the water storage end to prevent floating objects from entering the turbines and affecting the operation of the hydropower units. Large power stations have special salvage vessels to clean and remove floating objects, while small power stations usually use manual salvage methods, specifically setting an inclined trash rack at the water inlet end. Floating objects are blocked by the trash rack. When they accumulate to a certain level, the floating objects in front of the trash rack are manually salvaged ashore using a slag rake. Although this method is low-cost, if bad weather occurs and the floating objects in front of the trash rack accumulate to a certain level, resulting in waterway blockage and affecting power generation efficiency, manual operations must be dispatched, which poses a great safety risk. In addition, due to limited manpower, many large floating objects must be dispatched to work together, which is inefficient. Utility Model Content

[0003] The problem to be solved by the utility model is to provide an automatic slag scavenger for a hydropower station with a simple structure and reliable operation, in view of the shortcomings of high risk and low operation efficiency brought about by manual slag scavenging in existing small hydropower stations.

[0004] The technical solution for achieving the above-mentioned purpose includes the following contents.

[0005] An automatic slag scooping machine for a hydropower station comprises a frame, a slag scooping rake driven by a slag scooping driving mechanism, a slag discharge rake driven by a slag discharge driving mechanism, and a tooth rake guiding mechanism.

[0006] The front end of the frame is provided with a T-shaped guide groove in the vertical direction, and the opening of the T-shaped guide groove faces forward.

[0007] The slag rake comprises a handle and a rake head installed at the bottom of the handle, the rake head comprises a crossbeam arranged in the left and right directions and a plurality of rake teeth arranged at intervals on the crossbeam, the rake teeth point to the rear, and a limit block is respectively arranged in front of both sides of the crossbeam.

[0008] The slag scooping driving mechanism includes a lifting driving device and a swing driving device. The lifting driving device includes a lifting frame, a transmission mechanism and a driving motor installed on the frame. The lifting frame is provided with a T-shaped guide rail and a vertical rack. The T-shaped guide rail is vertically arranged at the rear end of the lifting frame, and its size is adapted to the T-shaped guide groove. The lifting frame can be slidably installed on the frame by matching the T-shaped guide rail with the T-shaped guide groove. The rack surface of the vertical rack is arranged forward. The transmission mechanism includes a transmission rod and a driving gear arranged on the transmission rod. The transmission rod is horizontally deployed in the left and right directions and is rotatably installed on the frame. The transmission rod is connected to the driving motor. The gear is matched with the vertical rack; the top end of the handlebar is rotatably connected to the top of the front end of the lifting frame; the swing driving device includes a push rod, a first hydraulic cylinder, a return spring and a swing amplitude limiting rod, the push rod is arranged along the front and rear direction, the push rod can be slidably installed on the frame, the front end of the push rod is aligned with the handlebar, the first hydraulic cylinder is arranged on the frame along the front and rear direction, the push rod is connected to the output end of the first hydraulic cylinder, the return spring is a tension spring, which is arranged along the front and rear direction, the front end of the tension spring is connected to the handlebar, and the rear end of the tension spring is connected to the lifting frame, the swing amplitude limiting rod is arranged along the front and rear direction, its front end points to the handlebar, and its rear end is connected to the lifting frame,

[0009] The slag removal rake comprises a transverse rod arranged in the left-right direction and a plurality of vertical teeth arranged on the transverse rod, wherein the vertical teeth are arranged upward and are arranged at intervals along the length direction of the transverse rod.

[0010] The slag discharge driving mechanism comprises a lifting rod and a second hydraulic cylinder, wherein the lifting rod is slidably mounted on the frame, the second hydraulic cylinder is vertically arranged on the frame, the lifting rod is connected to the output end of the second hydraulic cylinder, and the transverse rod is connected to the lifting rod;

[0011] The guiding mechanism comprises a guide plate fixedly arranged in front of the slag discharge rake, the guide plate is inclined with the front lower and the rear higher. When working, the front end of the guide plate is connected with the top of the trash rack. Under the action of the return spring and gravity, the limit block slides closely against the trash rack and the top surface of the guide plate in turn. Under the guidance of the guide plate, the rake head reaches above the vertical teeth of the slag discharge rake.

[0012] Furthermore, it also includes a waterproof cylinder, which is vertically arranged and fixedly installed below the lifting frame, with the tube mouth of the waterproof cylinder facing upward and its bottom sealed. When working, the lower part of the waterproof cylinder is located below the water surface. After the lifting frame descends, its bottom is inserted into the waterproof cylinder from the tube mouth to protect the bottom of the lifting frame from water corrosion.

[0013] Furthermore, the barrel mouth is provided with a barrel cover, one side of the barrel cover is hinged with the waterproof barrel, and the other side of the barrel cover is connected to the cover-lifting mechanism, the cover-lifting mechanism includes two connecting rods and telescopic parts, the telescopic parts include a telescopic head arranged in the accommodating barrel, the accommodating barrel is arranged on the frame along the front-back direction, a compression spring is arranged between the rear end of the telescopic head and the accommodating barrel, under the action of the compression spring, the front end of the telescopic head extends out of the accommodating barrel, the extended front end is located on the movement path of the T-shaped guide rail, and a guide rod is arranged on the upper left-right direction of the telescopic head, the two connecting rods include two connecting rods with end hinges, one of which is hinged with the barrel cover, and the middle part of the other connecting rod is connected to the frame through a rotating shaft, the rotating shaft is parallel to the guide rod, and a long hole is arranged on the other connecting rod, and the long hole is sleeved on the guide rod on the telescopic head. The barrel cover prevents debris from entering the waterproof barrel, and the cover-lifting mechanism ensures that the barrel mouth is opened when the T-shaped guide rail moves downward and needs to enter the waterproof barrel, and the barrel mouth is closed when it is not needed.

[0014] Furthermore, the driving motor is connected to the transmission rod through a sprocket transmission mechanism.

[0015] Furthermore, a guide wheel is provided at the rear end of the top of the lifting frame, and the rotating shaft of the guide wheel is arranged in the left-right direction. A guide groove is provided in the front part of the frame in the vertical direction, and the width of the guide groove is adapted to the guide wheel. When working, the guide wheel rolls in the guide groove to reduce friction and improve the stability of the lifting frame moving up and down along the frame.

[0016] Furthermore, the swing-amplitude limiting rod is a bolt screwed onto the lifting frame, so as to facilitate adjustment of the swing amplitude of the handlebar backward.

[0017] Furthermore, there are two handle bars, which are symmetrically arranged on the left and right sides of the crossbeam, and there are two swing drive devices, which are symmetrically arranged on the left and right sides of the frame.

[0018] Furthermore, a roller is provided at the front end of the push rod to reduce the friction on the handlebar during operation.

[0019] Furthermore, the lifting drive device also includes a brake, which is an electromagnetically driven brake mechanism, and the brake mechanism includes a brake disc, which is fixedly connected to the transmission rod. The brake is helpful to prevent the lifting frame from falling when it rises to the right position, and to prevent the slag rake from moving down and touching the bottom of the water diversion channel when it descends to the right position. The general working principle of the brake mechanism is: the brake pads are released when the power is on, and the two arc-shaped brake pads are tightened and pressed against the arc surface of the brake disc for braking when the power is off, which further increases the reliability of the slag picker.

[0020] The automatic slag scooping machine of the hydropower station is arranged behind the trash rack of the hydropower station. When in use, the slag scooping rake head extends forward to the underwater in front of the trash rack. Under the action of the return spring and gravity, the slag scooping rake head swings backward and (limit block) fits on the trash rack. The lifting drive device drives the slag scooping rake to rise, and the rake head slides upward along the trash rack. The floating objects blocked in front of the trash rack are lifted up by the rake teeth and leave the water surface; after the rake head reaches the top of the trash rack, it continues to move upward and backward under the guidance of the guide plate. When the rake head reaches above the vertical teeth of the slag discharge rake, the lifting frame stops rising. At this time, the handle bar abuts against the front end of the swing limit bar and cannot swing backward. The second hydraulic cylinder drives the slag rake to rise, and the vertical teeth are inserted between the teeth. The floating objects are located behind the vertical teeth. The first hydraulic cylinder drives the push rod to extend forward. After the push rod contacts the handle, it pushes the handle to swing forward. The teeth swing forward, and the floating objects on the teeth are blocked by the vertical teeth. After losing the support of the teeth, they fall to the bottom of the slag rake to complete the slag removal action, and the slag rake descends to its original position. The lifting drive device drives the slag rake to descend. Due to the action of the push rod, the rake head moves downward and swings forward at the same time. When the teeth of the rake head reach the front of the floating objects on the water, the push rod retreats, and the slag rake swings backward under the action of the return spring and gravity. The rake head extends forward to the water in front of the trash rack, thereby starting the next action of salvaging floating objects. Further optimization is that a waterproof cylinder device is added to ensure that the relevant parts of the lifting frame are isolated from water and prevent the mechanism from being corroded. When the T-shaped guide rail descends, the rear end face of the T-shaped guide rail squeezes the telescopic head to move backward into the accommodating cylinder, and the guide rod on the telescopic head drives the second connecting rod to rotate, so that the front end of the second connecting rod pushes the cylinder cover to rotate, thereby opening the cylinder mouth of the waterproof cylinder, and the lower end of the T-shaped guide rail and the vertical rack enters the waterproof cylinder to avoid contact with water. As a further automation, a conveyor belt can be set under the slag rake to transport the floating objects falling from the slag rake head to a designated place.

[0021] The utility model of the automatic slag scavenger for a hydropower station can salvage floating objects on the water surface in front of the trash rack, thereby using the machine to replace manual work, which is conducive to improving work efficiency and reducing production safety risks. The utility model has the advantages of simple structure and easy maintenance, can be widely used in slag scavenging operations of various small hydropower stations, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an automatic slag scooping machine for a hydropower station according to an embodiment;

[0023] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0024] Figure 3 for Figure 1 Enlarged view of middle part B;

[0025] Figures 4 to 7It is a working principle diagram of the automatic slag scooping machine for a hydropower station according to an embodiment.

[0026] In the figure, 1. frame; 1-1. T-shaped guide groove; 1-2. guide groove; 2. slag rake; 2-1. handle; 2-2. rake head; 2-3. limit block; 3. slag rake; 4. trash rack; 5. lifting drive device; 5-1. lifting frame; 5-1-1. vertical rack; 5-1-2. T-shaped guide rail; 5-1-3. guide wheel; 5-2. transmission mechanism; 5-3. brake mechanism; 6. second hydraulic cylinder; 7. swing drive device; 7-1. push rod; 7-2. first hydraulic cylinder; 7-3. bolt; 7-4. tension spring; 8. guide plate; 9. waterproof cylinder; 9-1. cylinder cover; 9-2. cover lifting mechanism; 9-2-1. telescopic head; 9-2-2. accommodating cylinder; 9-2-3. rotating shaft; 9-2-4. pivot; 9-2-5. two connecting rods. DETAILED DESCRIPTION

[0027] The utility model is described in detail below in conjunction with the embodiments. It should be noted that the following knowledge is clear to those skilled in the art: according to the description of the automatic slag scooping machine for a hydropower station in the technical solution and the following embodiment description and in conjunction with the accompanying drawings, corresponding industrial controllers and sensors (such as travel switches) are provided to control the actions of various components. Therefore, the description of the control circuit is omitted in the embodiment.

[0028] See also Figures 1 to 7 An automatic slag scooping machine for a hydropower station comprises a frame 1, a slag scooping rake 2 driven by a slag scooping driving mechanism, a slag discharge rake 3 driven by a slag discharge driving mechanism, a tooth rake guiding mechanism and a waterproof cylinder 9.

[0029] Two vertical T-shaped guide grooves 1-1 are symmetrically arranged on the left and right sides of the front end of the frame 1, and the opening of the T-shaped guide groove 1-1 faces forward.

[0030] The slag rake 2 includes a handle 2-1 connected to a rake head 2-2 at the bottom of the handle 2-1, the rake head 2-2 includes a crossbeam arranged in the left and right directions and a plurality of rake teeth arranged at intervals on the crossbeam, the rake teeth point to the rear, a limit block 2-3 is arranged in front of each of the two sides of the crossbeam, and the two sides of the limit block 2-3 are respectively connected to two adjacent rake teeth, the handle 2-1 is provided with two rake teeth symmetrically arranged at the left and right ends of the crossbeam,

[0031] The slag scooping driving mechanism includes a lifting driving device 5 and a swing driving device 7. The lifting driving device 5 includes a lifting frame 5-1, a transmission mechanism 5-2, a brake mechanism 5-3 and a driving motor installed on the right side of the frame 1. Two T-shaped guide rails 5-1-2 and two vertical racks 5-1-1 are symmetrically arranged on the left and right sides of the lifting frame 5-1. The T-shaped guide rail 5-1-2 is vertically arranged at the rear end of the lifting frame 5-1, and its size is adapted to the T-shaped guide groove 1-1. The lifting frame 5-1 is matched with the T-shaped guide groove through the T-shaped guide rail 5-1-2. The 1-1 mode can be slidably installed on the frame 1, the rack surface of the vertical rack 5-1-1 is arranged forward, the transmission mechanism 5-2 includes a transmission rod and two driving gears arranged on the transmission rod, the transmission rod is horizontally arranged in the left and right directions and rotatably installed on the frame 1, the right end of the transmission rod is connected to the driving motor through a sprocket transmission mechanism, and the two driving gears are respectively matched with the left and right vertical racks 5-1-1. The brake mechanism 5-3 is arranged on the transmission rod on the right side of the right driving gear; the top ends of the two handlebars 2-1 are connected to the top of the handlebars 2-1. The top of the front end of the lifting frame 5-1 is rotatably connected; there are two swing drive devices 7, which are symmetrically arranged along the left and right directions. The swing drive device 7 includes a push rod 7-1, a first hydraulic cylinder 7-2, a return spring and a swing limit rod. The push rod 7-1 is arranged along the front and rear directions. The push rod 7-1 is slidably installed on the frame 1. The front end of the push rod 7-1 is aligned with the handle bar 2-1. The front end of the push rod 7-1 is provided with a roller to reduce the friction on the handle bar 2-1 during operation. The first hydraulic cylinder 7-2 is arranged on the frame 1 along the front and rear directions. The push rod 7-1 is connected to the output end of the first hydraulic cylinder 7-2. The return spring is a tension spring 7-4, which is arranged along the front-to-back direction. The front end of the tension spring 7-4 is connected to the handle bar 2-1, and the rear end of the tension spring 7-4 is connected to the lifting frame 5-1. The swing limit rod is arranged along the front-to-back direction, with its front end pointing to the handle bar 2-1 and its rear end connected to the lifting frame 5-1. In this embodiment, the swing limit rod is a bolt 7-3 screwed on the lifting frame 5-1, which is convenient for adjusting the swing amplitude of the handle bar 2-1 and improving the adjustability of the equipment.

[0032] The slag removal rake 3 includes a transverse rod arranged in the left-right direction and a plurality of vertical teeth arranged on the transverse rod, wherein the vertical teeth are arranged upward and are arranged at intervals along the length direction of the transverse rod.

[0033] Two slag discharge driving mechanisms are symmetrically arranged along the left and right directions, and the slag discharge driving mechanisms include a lifting rod and a second hydraulic oil cylinder 6, the lifting rod is slidably mounted on the frame 1, the second hydraulic oil cylinder 6 is vertically arranged on the frame 1, the lifting rod is connected to the output end of the second hydraulic oil cylinder 6, and the two ends of the transverse rod are respectively connected to the bottom ends of the two lifting rods;

[0034] Two tooth rake guide mechanisms are symmetrically arranged along the left and right directions, and the guide mechanism includes a guide plate 8 fixedly arranged in front of the slag rake 3. The guide plate 8 is tilted with the front lower and the rear higher. When working, the front ends of the two guide plates 8 are respectively connected to the left and right sides of the top of the trash rack 4. Under the action of the return spring and gravity, the limit blocks 2-3 slide closely against the trash rack 4 and the top surface of the guide plate 8 in turn. Under the guidance of the guide plate 8, the rake head 2-2 reaches above the vertical teeth of the slag rake 3.

[0035] The waterproof cylinder 9 is vertically arranged and fixedly installed below the lifting frame 5-1, the cylinder mouth of the waterproof cylinder 9 faces upward, the bottom thereof is sealed, a cylinder cover 9-1 is arranged at the cylinder mouth, the front side of the cylinder cover 9-1 is rotatably connected to the front side of the waterproof cylinder 9 through a pivot 9-2-4, the top surface of the rear side of the cylinder cover 9-1 is connected to a lid-lifting mechanism 9-2, the lid-lifting mechanism 9-2 includes two connecting rods 9-2-5 and a telescopic member, the telescopic member includes a accommodating cylinder 9-2-2 and a telescopic head 9-2-1 arranged in the accommodating cylinder 9-2-2, the accommodating cylinder 9-2-2 is arranged on the frame 1 along the front-back direction, the rear end of the telescopic head 9-2-1 is connected to the accommodating cylinder 9-2- 2, under the action of the compression spring, the front end of the telescopic head 9-2-1 extends out of the outer side of the accommodating tube 9-2-2, and the extended front end is located on the movement path of the T-shaped guide rail 5-1-2. A guide rod is provided on the telescopic head 9-2-1 along the left and right directions. The second connecting rod 9-2-5 includes two connecting rods with end hinges, one of which is rotatably connected to the top surface of the rear side of the tube cover 9-1, and the middle part of the other connecting rod is connected to the frame 1 through a rotating shaft 9-2-3, and the rotating shaft 9-2-3 is parallel to the guide rod. A long hole is provided on the other connecting rod, and the long hole is mounted on the guide rod on the telescopic head 9-2-1. The tube cover 9-1 prevents debris from entering the waterproof tube 9, and the cover-lifting mechanism 9-2 ensures that the tube mouth is opened when the T-shaped guide rail 5-1-2 moves downward and needs to enter the waterproof tube 9, and the tube mouth is closed when it is not needed.

[0036] In this embodiment, a guide wheel 5-1-3 is further provided at the rear end of the top of the lifting frame 5-1, and the rotating shaft of the guide wheel 5-1-3 is arranged in the left-right direction. A guide groove 1-2 is provided in the front part of the frame 1 in the vertical direction. The width of the guide groove 1-2 is adapted to the guide wheel 5-1-3. When working, the guide wheel 5-1-3 rolls in the guide groove 1-2, reducing the friction between the lifting frame 5-1 and the frame 1, improving the stability of the lifting frame 5-1 moving up and down along the frame 1, and allowing the slag rake 2 to salvage heavier floating objects.

[0037] The working principle of the automatic slag dredger of the hydropower station in this embodiment can be found in Figures 4 to 7The automatic slag scooping machine of the hydropower station is arranged behind the trash rack 4 of the hydropower station. When in use, the slag scooping rake 2 has its rake head 2-2 extended forward to the water in front of the trash rack 4. Under the action of the tension spring 7-4 and gravity, the rake head 2-2 of the slag scooping rake 2 swings back and (limiting block 2-3) fits on the trash rack 4. The lifting drive device 5 drives the slag scooping rake 2 to rise, and the rake head 2-2 slides upward along the trash rack 4. The floating objects blocked in front of the trash rack 4 are lifted up by the rake teeth and leave the water surface. Figure 4 After the rake head 2-2 reaches the top of the trash rack 4, it continues to move upward and backward under the guidance of the guide plate 8. When the rake head 2-2 reaches above the vertical teeth of the slag rake 3, the lifting frame 5-1 stops rising. At this time, the rod 2-1 abuts against the front end of the swing limit rod bolt 7-3 and cannot swing backward. Figure 5 The second hydraulic cylinder 6 drives the slag rake 3 to rise, the vertical teeth are inserted between the rake teeth, and the floating objects are located behind the vertical teeth. Figure 6 The first hydraulic cylinder 7-2 drives the push rod 7-1 to extend forward, and the push rod 7-1 abuts against the handle 2-1 and pushes the handle 2-1 forward, and the rake head 2-2 swings forward, see Figure 7 , the floating objects on the rake teeth are blocked by the vertical teeth, and after losing the support of the rake teeth, they fall to the ground below the slag rake 3 (a conveyor belt can be set on the ground to receive the floating objects and transport them to other places), completing the slag discharge action, and then the slag rake 3 descends to its original position. The lifting drive device 5 (driving motor) drives the slag rake 2 to descend. Due to the abutment of the front end of the mandrel 7-1, the rake head 2-2 moves downward and swings forward at the same time. When the rake teeth of the rake head 2-2 reach the front of the floating objects on the water, the mandrel 7-1 retreats, and the slag rake 2 swings backward under the action of the return spring and gravity, and the rake head 2-2 extends forward to the water in front of the trash rack 4, thereby starting the next floating object salvage action;

[0038] The working principle of automatic opening and closing of the square cover of the waterproof cylinder 9 is as follows: when the T-shaped guide rail 5-1-2 descends, the rear end face of the T-shaped guide rail 5-1-2 squeezes the telescopic head 9-2-1, causing it to move backward into the accommodating cylinder 9-2-2, and the guide rod on the telescopic head 9-2-1 drives the second connecting rod 9-2-5 to rotate around the rotating shaft 9-2-39-2-3, causing the front end of the second connecting rod 9-2-5 to swing forward, thereby pushing the cylinder cover 9-1 to rotate forward, thereby opening the cylinder mouth of the waterproof cylinder 9, and the lower ends of the T-shaped guide rail 5-1-2 and the rack enter the waterproof cylinder 9, avoiding When the lifting frame 5-1 rises, the bottom end of the T-shaped guide rail 5-1-2 rises to above the telescopic head 9-2-1 and no longer abuts against the front end surface of the telescopic head 9-2-1. Under the action of the compression spring, the telescopic head 9-2-1 moves forward and extends out of the outside of the accommodating tube 9-2-2. The guide rod on the telescopic head 9-2-1 drives the second connecting rod 9-2-5 to rotate around the rotating shaft 9-2-39-2-3, so that the front end of the second connecting rod 9-2-5 swings backward, thereby pulling the tube cover 9-1 to rotate backward, thereby closing the tube mouth of the waterproof tube 9 and preventing debris from entering the waterproof tube 9.

[0039] The automatic slag scooping machine for a hydropower station of the utility model can replace manual work to salvage floating objects from the water surface in front of the trash rack 4 to the shore, which can effectively reduce the operation risk and improve the efficiency of slag scooping. The slag scooping machine has the advantages of simple structure, reliable operation and strong slag scooping ability. The utility model can further be provided with a liquid level device to control automatic slag scooping and a remote control device to remotely control slag scooping. The slag scooping and slag discharge can be performed in a timed, single, multiple and uninterrupted cycle.

Claims

1. An automatic slag dredger for a hydropower station, comprising a frame, characterized in that: It also includes a slag rake driven by the slag scooping driving mechanism, a slag discharge rake driven by the slag discharge driving mechanism, and a tooth rake guiding mechanism. The front end of the frame is provided with a T-shaped guide groove in the vertical direction, and the opening of the T-shaped guide groove faces forward. The slag rake comprises a handle and a rake head installed at the bottom of the handle, the rake head comprises a crossbeam arranged in the left and right directions and a plurality of rake teeth arranged at intervals on the crossbeam, the rake teeth point to the rear, and a limit block is respectively arranged in front of both sides of the crossbeam. The slag scooping driving mechanism includes a lifting driving device and a swing driving device. The lifting driving device includes a lifting frame, a transmission mechanism and a driving motor installed on the frame. The lifting frame is provided with a T-shaped guide rail and a vertical rack. The T-shaped guide rail is vertically arranged at the rear end of the lifting frame, and its size is adapted to the T-shaped guide groove. The lifting frame can be slidably installed on the frame by matching the T-shaped guide rail with the T-shaped guide groove. The rack surface of the vertical rack is arranged forward. The transmission mechanism includes a transmission rod and a driving gear arranged on the transmission rod. The transmission rod is horizontally deployed in the left and right directions and is rotatably installed on the frame. The transmission rod is connected to the driving motor. The gear is matched with the vertical rack; the top end of the handlebar is rotatably connected to the top of the front end of the lifting frame; the swing driving device includes a push rod, a first hydraulic cylinder, a return spring and a swing amplitude limiting rod, the push rod is arranged along the front and rear direction, the push rod can be slidably installed on the frame, the front end of the push rod is aligned with the handlebar, the first hydraulic cylinder is arranged on the frame along the front and rear direction, the push rod is connected to the output end of the first hydraulic cylinder, the return spring is a tension spring, which is arranged along the front and rear direction, the front end of the tension spring is connected to the handlebar, and the rear end of the tension spring is connected to the lifting frame, the swing amplitude limiting rod is arranged along the front and rear direction, its front end points to the handlebar, and its rear end is connected to the lifting frame, The slag removal rake comprises a transverse rod arranged in the left-right direction and a plurality of vertical teeth arranged on the transverse rod, wherein the vertical teeth are arranged upward and are arranged at intervals along the length direction of the transverse rod. The slag discharge driving mechanism comprises a lifting rod and a second hydraulic cylinder, wherein the lifting rod is slidably mounted on the frame, the second hydraulic cylinder is vertically arranged on the frame, the lifting rod is connected to the output end of the second hydraulic cylinder, and the transverse rod is connected to the lifting rod; The tooth rake guiding mechanism comprises a guide plate fixedly arranged in front of the slag discharge rake, the guide plate is inclined with the front lower and the rear higher. When working, the front end of the guide plate is connected with the top of the trash rack, and under the action of the return spring and gravity, the limit block slides closely against the trash rack and the top surface of the guide plate in turn. Under the guidance of the guide plate, the rake head reaches above the vertical teeth of the slag discharge rake.

2. The automatic slag dredger of a hydropower station according to claim 1, characterized in that: It also includes a waterproof cylinder, which is vertically arranged and fixedly installed below the lifting frame, with the cylinder mouth of the waterproof cylinder facing upward and its bottom sealed. When working, the lower part of the waterproof cylinder is located below the water surface. After the lifting frame descends, its bottom is inserted into the waterproof cylinder from the cylinder mouth.

3. The automatic slag dredger of a hydropower station according to claim 2, characterized in that: The cylinder mouth is provided with a cylinder cover, one side of the cylinder cover is hinged to the waterproof cylinder, and the other side of the cylinder cover is connected to the lid-lifting mechanism, the lid-lifting mechanism includes two connecting rods and a telescopic part, the telescopic part includes a telescopic head arranged in the accommodating cylinder, the accommodating cylinder is arranged on the frame along the front-to-back direction, a compression spring is arranged between the rear end of the telescopic head and the accommodating cylinder, under the action of the compression spring, the front end of the telescopic head extends out of the outside of the accommodating cylinder, the extended front end is located on the movement path of the T-shaped guide rail, and a guide rod is arranged on the telescopic head in the left and right directions, the two connecting rods include connecting rods with two end hinges, one of which is hinged to the cylinder cover, and the middle part of the other connecting rod is connected to the frame through a rotating shaft, the rotating shaft is parallel to the guide rod, and the other connecting rod is provided with a long strip hole, which is mounted on the guide rod on the telescopic head.

4. The automatic slag scooping machine for a hydropower station according to claim 1, characterized in that: The driving motor is connected to the transmission rod through a sprocket transmission mechanism.

5. The automatic slag scooping machine for a hydropower station according to claim 1, characterized in that: A guide wheel is provided at the rear end of the top of the lifting frame, and the rotating shaft of the guide wheel is arranged in the left and right direction. A guide groove is provided in the front part of the frame in the vertical direction. The width of the guide groove is adapted to the guide wheel. When working, the guide wheel rolls in the guide groove.

6. The automatic slag dredger of a hydropower station according to claim 1, characterized in that: The swing amplitude limiting rod is a bolt screwed on the lifting frame.

7. The automatic slag dredger of a hydropower station according to claim 1, characterized in that: There are two handle bars, which are symmetrically arranged on the left and right sides of the crossbeam; there are two swing drive devices, which are symmetrically arranged on the left and right sides of the frame.

8. The automatic slag dredger of a hydropower station according to claim 1, characterized in that: A roller is arranged at the front end of the push rod.

9. The automatic slag dredger of a hydropower station according to claim 1, characterized in that: The lifting drive device also includes a brake, which is an electromagnetically driven brake mechanism. The brake mechanism includes a brake disc, and the brake disc is fixedly connected to the transmission rod.

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