A funnel tilting mechanism and method that requires no disassembly or maintenance

Abstract

This invention discloses a hopper tilting mechanism and method that requires no disassembly or maintenance, relating to the field of gold tailings hopper maintenance technology. The mechanism includes a tilting frame and a hopper. The tilting frame is equipped with a drive assembly for driving tilting and lifting. The drive assembly includes two lifting slots on both sides of the tilting frame. Inside each lifting slot is a lifting plate that can be raised and lowered during hopper tilting. A guide rod is provided on the side of each lifting plate that is far from each other. Two hydraulic telescopic rods are rotatably connected to the bottom of the side of each lifting plate that is far from each other. Two guide frames corresponding to the positions of the guide rods are fixedly connected to the outside of the tilting frame. The hopper tilts by rotating the tilting plate, allowing for maintenance or cleaning of the hopper without disassembly, reducing the complex disassembly steps required for hopper maintenance and thus improving the efficiency of hopper maintenance.

Description

Technical Field

[0001] This invention relates to the field of gold tailings hopper repair technology, and more specifically, to a hopper tilting mechanism and method that does not require disassembly for maintenance. Background Technology

[0002] In gold tailings screening production lines, the hopper, as a core component for material transfer, is subject to long-term erosion by ore particles and corrosion by acidic slurry. Problems such as wear-resistant layer peeling off the inner wall, wear and deformation of the discharge port, and filter clogging easily occur, requiring regular maintenance and cleaning. Traditional hoppers are mostly fixed to the screening device frame with flange bolts. Maintenance requires first dismantling the connected feed pipes and discharge chutes, then using lifting equipment to lift the entire hopper away from its installation position. The dismantling process requires multiple operators, and each dismantling operation is usually too time-consuming, severely impacting the continuous operation efficiency of the production line.

[0003] The existing maintenance mode for fixed-installation funnels has several drawbacks. Frequent disassembly can lead to deformation of the flange connection surface and failure of the seals. Repeated hoisting also poses risks of funnel collision deformation and reduced installation accuracy, increasing the risk of material leakage and deviation in subsequent production. In addition, some heavy-duty funnels can weigh several tons, and disassembly at height poses a high safety risk. Due to space limitations, some funnels cannot even be completely disassembled, requiring operators to enter the funnel for high-altitude operations. This increases the risk of material residue falling during maintenance, creates many blind spots in cleaning and maintenance, and often results in incomplete maintenance. After maintenance, the machine needs to be shut down again for maintenance in a short period of time, significantly increasing the operation and maintenance costs and downtime losses of gold tailings screening. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a funnel tilting mechanism and method that do not require disassembly and maintenance.

[0005] The technical solution is as follows: A funnel tilting mechanism and method that does not require disassembly and maintenance includes a tilting frame and a funnel, wherein the tilting frame is provided with a drive component for driving tilting and lifting. The drive assembly includes a lifting slot on the tilting frame. A lifting plate that can be raised and lowered during the tilting of the funnel is slidably connected between two lifting slots on the same side. A guide rod is provided on the side of the two lifting plates that are far apart from each other. Two hydraulic telescopic rods are rotatably connected to the bottom of the side of the two lifting plates that are far apart from each other. Two guide frames corresponding to the positions of the guide rods are fixedly connected to the outside of the tilting frame. The guide rods and guide frames work together to enable the lifting plate to be raised and lowered. A tilting assembly for tilting the funnel is provided between the two lifting plates. The flipping assembly includes a flipping plate disposed between two lifting plates for driving the funnel to flip.

[0006] Furthermore, the drive assembly also includes two auxiliary wheels rotatably connected to both sides of the two lifting plates. A trapezoidal groove is provided on the side of the two lifting plates that are close to each other, and a sliding groove is provided on the side of the two lifting plates that are far from each other. A trapezoidal block is slidably connected inside each of the two trapezoidal grooves. A sliding rod is fixedly connected to the side of the two trapezoidal blocks that are far from each other, and a groove plate is fixedly connected to the side of the two trapezoidal blocks that are close to each other. The top ends of the telescopic shafts of the two hydraulic telescopic rods on the same side are rotatably connected to the sliding rod.

[0007] Furthermore, the tops of both guide frames are designed in an M-shape.

[0008] Furthermore, each auxiliary wheel rolls against the outer surfaces of both sides of the tilting frame, the trapezoidal groove is connected to the slide groove, the two slide rods slide inside the slide groove, and the two guide rods slide on the upper surfaces of the two guide frames.

[0009] Furthermore, the flipping assembly includes two brackets fixedly connected to the two lifting plates on their close sides, two limiting blocks fixedly connected to each bracket, two rollers rotatably connected to both sides of the flipping plate, upright plates fixedly connected to both sides of the flipping plate, guide blocks fixedly connected to the top of the two upright plates on their far sides, and two counterweights fixedly connected to the bottom of the flipping plate.

[0010] Furthermore, each of the two brackets consists of a crossbeam and two semi-circular groove blocks. The two semi-circular groove blocks of the bracket are fixedly connected to the upper surfaces of both ends of the crossbeam. The center of the flip plate has an opening that matches the funnel. The funnel is fixedly installed in the opening of the flip plate. The size of the roller matches the internal shape and size of the two semi-circular groove blocks of the bracket. The roller is located between the semi-circular groove block of the bracket and an adjacent limiting block.

[0011] Furthermore, two rollers on the same side roll on the bracket on the adjacent side, and two guide blocks slide inside the two slot plates respectively.

[0012] A funnel-flipping method that requires no disassembly or maintenance: Step 1: Control the extension shaft of the hydraulic telescopic rod on the side to be flipped. During the extension of the hydraulic telescopic rod, push the slide rod to slide horizontally in the slide groove, and simultaneously drive the trapezoidal block to move horizontally along the trapezoidal groove. At the same time, the slide rod drives the guide rod to slide along the upper surface of the guide frame, providing guiding power for the subsequent lifting of the lifting plate. Step 2: When the guide rod slides along the rising section of the guide frame, it drives the lifting plate to move upward along the lifting groove through the sliding rod. The auxiliary wheel rolls against the outer wall of the tilting frame to maintain stability. During the lifting process, the lifting plate simultaneously drives the bracket, tilting plate and funnel to rise as a whole, so that the bottom of the funnel is completely separated from the feed inlet of the conveying device below. When the guide rod runs to the top horizontal section of the guide frame, the lifting plate stays at the highest position and remains stationary, leaving a safe space for the funnel to tilt. Step 3: When the trapezoidal block moves horizontally, it drives the groove plate to move synchronously. The guide block pulls the vertical plate and the flipping plate to move horizontally. The roller rolls along the bracket beam in the flipping direction. After the roller is locked into the semi-circular groove block at the end of the bracket, it is limited. When the groove plate continues to move, it pulls the vertical plate to flip upward with the roller as the axis. The flipping plate drives the funnel to flip synchronously until the target repair surface faces downward. The guide rod slides along the lower section of the guide frame. The lifting plate drives the flipped funnel to descend to the low position. Step 4: After completing the maintenance on one side, start the extension of the hydraulic telescopic rod on the other side, close the original working hydraulic telescopic rod, the slide rod slides horizontally in the opposite direction along the slide groove, the groove plate pushes the vertical plate in the opposite direction to drive the flip plate to return to the horizontal state, the roller returns to the middle position along the bracket beam, and then moves to the other side semi-circular groove block. After the roller is inserted into the other side semi-circular groove block, the flip plate flips in the opposite direction with the roller on that side as the axis, so that the other side of the funnel to be maintained faces the lower position; Step 5: After all maintenance and cleaning are completed, control the hydraulic telescopic rods on both sides to retract synchronously, the slide rod returns to the middle position of the slide groove, the guide rod returns to the lowest position of the guide frame, the tilting plate automatically resets to the horizontal state under the action of the counterweight and the blocking action of the limit block, the roller smoothly lands on the bracket beam, the funnel returns to the normal working posture, the lifting plate descends along the lifting groove to the initial position, the entire mechanism reset is completed, and the funnel can be directly put into production operation without secondary calibration.

[0013] Based on the above, the beneficial effects of the funnel tilting mechanism and method of the present invention, which require no disassembly or maintenance, are as follows: The funnel can be flipped by rotating the flip plate, which allows the funnel to be repaired or cleaned simply by flipping it without disassembling it. This reduces the complicated disassembly steps required for funnel repair and improves the efficiency of funnel repair. By flipping the funnel left and right, the area that needs to be repaired or cleaned can be kept in a low position, which makes it easier for staff to repair and clean the funnel. The left and right flipping can avoid situations where the repair is not in place or the cleaning is not thorough, thus improving the effectiveness of the repair or cleaning of the funnel. By first moving the hopper upwards away from the feed inlets of other conveying devices below when it begins to rotate, the hopper can remain at its highest position throughout the rotation process, preventing it from touching the feed inlets of the conveying devices below. At the same time, after the hopper has finished rotating, it can be lowered to a lower position, making it easier for staff to maintain and clean the hopper. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall components of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the overall components of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of component A in the middle; Figure 4 This is a three-dimensional schematic diagram of the trapezoidal groove, slide, trapezoidal block, slide rod, and other components of the present invention; Figure 5 This is a three-dimensional schematic diagram of the lifting plate, hydraulic telescopic rod, guide rod, and other components of the present invention. Figure 6 This is a three-dimensional cross-sectional view of the flip plate, counterweight, funnel, and other components of the present invention; Figure 7 This is a three-dimensional schematic diagram of the components of the present invention, including the flip plate, rollers, upright plate, and guide block. Figure 8 This is a three-dimensional schematic diagram of the bracket, rollers, and other components of the present invention.

[0015] The reference numerals in the accompanying drawings of this invention are as follows: 1. Tilting frame; 4. Funnel; 21. Lifting groove; 22. Lifting plate; 23. Auxiliary wheel; 24. Trapezoidal groove; 25. Slide groove; 26. Trapezoidal block; 27. Slide rod; 28. Groove plate; 29. ​​Guide rod; 210. Hydraulic telescopic rod; 211. Guide frame; 31. Bracket; 311. Limiting block; 32. Flip plate; 33. Roller; 34. Vertical plate; 35. Guide block; 36. Counterweight. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] The embodiments provided by the present invention will be described in detail below: Example

[0018] like Figures 1 to 8 As shown, a funnel tilting mechanism that does not require disassembly and maintenance includes a tilting frame 1 and a funnel 4. The tilting frame 1 is provided with a drive component for driving tilting and lifting. The drive assembly includes lifting slots 21 formed on the tilting frame 1. Two lifting slots 21 on the same side are slidably connected to a lifting plate 22, resulting in two lifting plates 22. Two auxiliary wheels 23 are rotatably connected to both sides of each lifting plate 22, with each auxiliary wheel 23 rolling against the outer surfaces of both sides of the tilting frame 1. A trapezoidal groove 24 is formed on the side of each lifting plate 22 that is close to each other, and a sliding groove 25 is formed on the side of each lifting plate 22 that is far apart from each other. The trapezoidal grooves 24 and slidably connected to each other are connected to a trapezoidal block 26, with the two trapezoidal blocks 26 being far apart from each other. Each of the two sliding rods 27 is fixedly connected to one side of the slide 25. The two sliding rods 27 slide inside the slide groove 25 respectively. The sides of the two trapezoidal blocks 26 that are close to each other are fixedly connected to the groove plate 28. The ends of the two sliding rods 27 that are away from the trapezoidal blocks 26 are fixedly connected to the guide rods 29. The bottom of the sides of the two lifting plates 22 that are away from each other are rotatably connected to two hydraulic telescopic rods 210. The top ends of the telescopic shafts of the two hydraulic telescopic rods 210 on the same side are rotatably connected to the sliding rods 27. The outside of the tilting frame 1 is fixedly connected to two guide frames 211 that correspond to the positions of the guide rods 29. The two guide rods 29 slide against the upper surfaces of the two guide frames 211 respectively.

[0019] It should be noted that the tops of both guide frames 211 are designed in an M-shape, so that the guide rod 29 is at its lowest position when it is in the middle of the guide frame 211. However, when the guide rod 29 moves to both sides, it will move upward, but when it continues to move to both sides, it will move downward to its lowest position. In addition, the funnel 4 is set above the feed inlet of the conveying equipment of any processing equipment for gold tailings.

[0020] Specifically, when it is necessary to flip the funnel 4, it is necessary to simultaneously control the extension shaft of one of the two hydraulic telescopic rods 210 on both sides to extend, while the other hydraulic telescopic rod 210 does not work. That is, during the active extension and retraction of the extension shaft of one hydraulic telescopic rod 210, the other hydraulic telescopic rod 210 is passively extended and retracted. At this time, because the extension shaft of the hydraulic telescopic rod 210 extends, the extension shaft of the hydraulic telescopic rod 210 will push the slide rod 27 to slide horizontally inside the slide groove 25. The horizontal sliding of the slide rod 27 will drive the trapezoidal block 26 to slide horizontally inside the trapezoidal groove 24. At the same time, the slide rod 27 will also drive the guide rod 29 to move synchronously. At this time, the guide rod 29 will slide along the upper surface of the guide frame 211. Under the guidance of the M-shaped structure of the guide frame 211, the guide rod 29 will first move upward, and then slide horizontally for a distance before continuing to slide downward along the guide frame 211. During this process, the movement of the guide rod 29 causes the slide rod 27 to drive the lifting plate 22 through the slide groove 25 to move upward inside the lifting groove 21. After the lifting plate 22 stays at the highest position for a period of time, it will move downward inside the lifting groove 21. During the movement, the funnel 4 can be moved upward first when the flipping operation starts, away from the feed inlets of other conveying devices below. The funnel 4 can always be in the highest position during the flipping process, avoiding the funnel 4 from touching the feed inlets of the conveying devices below. At the same time, after the funnel 4 is flipped, it can be lowered to a lower position, which is convenient for the staff to maintain and clean the funnel 4.

[0021] It should be noted that the above only describes the main effect of the lifting plate 22's up-and-down movement. The specific structure that can drive the funnel 4 to flip is described in detail below. In addition, regardless of whether the guide rod 29 moves to the left or right, the lifting plate 22 will first move upward, then move horizontally a certain distance, and then move downward under the guidance of the guide frame 211. At this time, the lifting plate 22 will first move upward and then downward inside the lifting groove 21. The rolling resistance of the auxiliary wheel 23 ensures that the lifting plate 22 can slide smoothly up and down, while avoiding excessive friction between the lifting plate 22 and the groove wall of the lifting groove 21, thereby improving the smoothness of the lifting plate 22's up-and-down movement.

[0022] like Figures 1 to 3 , Figures 6 to 8As shown, a tilting assembly for tilting the funnel 4 is provided between the two lifting plates 22. The tilting assembly includes two brackets 31 fixedly connected to the side of the two lifting plates 22 that are close to each other. Two limit blocks 311 are fixedly connected to each of the two brackets 31. A tilting plate 32 is provided between the two lifting plates 22. Two rollers 33 are rotatably connected to both sides of the tilting plate 32. The two rollers 33 on the same side roll and fit against the bracket 31 on the adjacent side. Upright plates 34 are fixedly connected to both sides of the tilting plate 32. Guide blocks 35 are fixedly connected to the top of the side of the two upright plates 34 that are far from each other. The two guide blocks 35 slide inside the two slot plates 28 respectively. Two counterweights 36 are fixedly connected to the bottom of the tilting plate 32.

[0023] It should be noted that each of the two brackets 31 consists of a crossbeam and two semi-circular slots. The two semi-circular slots of the bracket 31 are fixedly connected to the upper surfaces of both ends of the crossbeam. The center of the flip plate 32 has an opening that matches the funnel 4. The funnel 4 is fixedly installed in the opening of the flip plate 32. The size of the roller 33 matches the internal shape and size of the two semi-circular slots of the bracket 31. The roller 33 is located between the semi-circular slot of the bracket 31 and an adjacent limiting block 311, and is used to limit the movement of the roller 33.

[0024] Specifically, during the horizontal movement of the trapezoidal block 26 within the trapezoidal groove 24, the trapezoidal block 26 drives the groove plate 28 to move horizontally synchronously. During this movement, the groove plate 28 drives the vertical plate 34 to move horizontally via the guide block 35. The vertical plate 34 then drives the tilting plate 32 to move horizontally. The tilting plate 32 drives the roller 33 to roll on the crossbeam of the bracket 31. When the roller 33 rolls into the semi-circular groove of the bracket 31 on one side of the tilting plate 32's movement direction, the roller 33 is restricted by the semi-circular groove of the bracket 31, but the groove plate 28 will continue to move. Furthermore, the groove plate 28 will drive the guide block 35 to move horizontally together. At this time, the guide block 35 is confined within the semi-circular groove due to the position of the roller 33, and the distance between the guide wheel 35 and the roller 33 remains constant. The guide wheel 35 is forced to move vertically in the groove plate 28. At this time, the guide block 35 pulls the flipping plate 32 through the vertical plate 34. The flipping plate 32 will rotate around the roller 33 located inside the semi-circular groove of the bracket 31 as the axis of rotation. During the flipping process, the flipping plate 32 will drive the funnel 4 to flip until the groove plate 28 is moved to the end of the slide 25, ending the flipping process of the flipping plate 32. The rotation of the flipping plate 32 can make the funnel 4 flip, so that the funnel 4 can be repaired or cleaned simply by flipping without disassembling the funnel 4. This reduces the complicated disassembly steps required for the maintenance of the funnel 4, thereby improving the efficiency of the maintenance of the funnel 4.

[0025] Furthermore, a single-direction flip only allows workers to repair or clean the lower part of the funnel 4. After flipping, although the higher part of the funnel 4 can move downwards under the guidance of the guide frame 211 for easier repair or cleaning, the higher part of the funnel 4 remains elevated during repair or cleaning, requiring workers to tilt their heads up, which is still inconvenient. The M-shaped guide frame 211, however, allows for flipping in both directions. At this time, the controller can extend the telescopic shaft of another hydraulic telescopic rod 210, closing the previously extended hydraulic telescopic rod 210. Under the pushing action of the extended telescopic shaft of the hydraulic telescopic rod 210, it will slide horizontally in the reverse direction inside the slide groove 25 via the slide rod 27. The slide rod 27, through the groove plate 28, causes the guide block 35 to drive the vertical plate 34 to move in the opposite direction. That is, the reverse-moving vertical plate 34 causes the flipping plate 32 to flip in the opposite direction around the roller 33. When the flipping plate 32 rotates to a horizontal position... Then, the continued movement of the upright plate 34 will cause the flipping plate 32 to move the roller 33 a certain distance in the opposite direction on the crossbeam of the bracket 31. Then, after the roller 33 abuts against the semi-circular groove on the other side of the bracket 31, the roller 33, which is restricted by the semi-circular groove on the other side of the bracket 31, serves as a support point. During the continued reverse movement of the groove plate 28, the guide block 35 will cause the upright plate 34 to drive the flipping plate 32 to flip. At this time, the flipping plate 32 will drive the funnel 4 to flip in the opposite direction to the previous flipping direction, thus completing the multi-directional flipping of the funnel 4. By flipping the funnel 4 in the left and right directions, it can be ensured that the area that needs to be repaired or cleaned is in a low position, which makes it easier for the staff to repair and clean the funnel 4. The left and right flipping can avoid situations such as incomplete repair or cleaning during repair or cleaning, thus improving the effectiveness of repairing or cleaning the funnel 4.

[0026] It should be noted that during the left and right tumbling of the funnel 4, when the tilting plate 32 remains horizontal, i.e., when the funnel 4 is not tilted, it can be tilted directly to the left or right, thus achieving bidirectional tilting of the funnel 4. Furthermore, when the tilting plate 32 is to be rotated to a horizontal position after tilting, the sliding rod 27 moves towards the center inside the slide groove 25, causing the groove plate 28 to move towards the center. At this time, the groove plate 28 no longer pulls the tilting plate 32 through the guide block 35 and the upright plate 34. Simultaneously, under the weight of the counterweight 36 and the blocking effect of the limiting block 311, the tilting plate 32 falls to a horizontal position. That is, the rollers 33 on both sides of the tilting plate 32 rest on the crossbeams of the two brackets 31, thereby keeping the tilting plate 32 in a horizontal position.

[0027] Example 2: A funnel-flipping method that requires no disassembly or maintenance: Step 1: Control the extension shaft of the hydraulic telescopic rod 210 on the side to be flipped. During the extension of the hydraulic telescopic rod 210, push the slide rod 27 to slide horizontally in the slide groove 25, and simultaneously drive the trapezoidal block 26 to move horizontally along the trapezoidal groove 24. At the same time, the slide rod 27 drives the guide rod 29 to slide along the upper surface of the guide frame 211, providing guiding power for the subsequent lifting of the lifting plate 22.

[0028] Step 2: As the guide rod 29 slides along the rising section of the guide frame 211, it drives the lifting plate 22 to move upward along the lifting groove 21 via the slide rod 27. The auxiliary wheel 23 rolls smoothly against the outer wall of the tilting frame 1. During the lifting process, the lifting plate 22 simultaneously drives the bracket 31, the tilting plate 32, and the funnel 4 to rise as a whole, so that the bottom of the funnel 4 is completely separated from the feed inlet of the conveying device below. When the guide rod 29 runs to the top horizontal section of the guide frame 211, the lifting plate 22 remains stationary at the highest position, reserving a safe space for the tilting of the funnel 4.

[0029] Step 3: When the trapezoidal block 26 moves horizontally, it drives the groove plate 28 to move synchronously. The guide block 35 pulls the vertical plate 34 and the flipping plate 32 to move horizontally. The roller 33 rolls along the crossbeam of the bracket 31 in the flipping direction. After the roller 33 is locked into the semi-circular groove block at the end of the bracket 31, it is limited. When the groove plate 28 continues to move, it pulls the vertical plate 34 to flip upward with the roller 33 as the axis. The flipping plate 32 drives the funnel 4 to flip synchronously until the target repair surface faces downward. The guide rod 29 slides along the descending section of the guide frame 211. The lifting plate 22 drives the flipped funnel 4 to descend to the low position.

[0030] Step 4: After completing the maintenance on one side, start the extension of the hydraulic telescopic rod 210 on the other side, close the original working hydraulic telescopic rod 210, slide rod 27 slides horizontally in the opposite direction along slide groove 25, groove plate 28 pushes vertical plate 34 in the opposite direction to drive flip plate 32 to return to the horizontal state, roller 33 returns to the middle position along bracket 31 crossbeam, and then moves to the other side semicircular groove block. After roller 33 is inserted into the other side semicircular groove block, flip plate 32 flips in the opposite direction with roller 33 on that side as the axis, so that the other side of funnel 4 to be maintained faces the lower position.

[0031] Step 5: After all maintenance and cleaning are completed, control the hydraulic telescopic rods 210 on both sides to retract synchronously, slide rod 27 returns to the middle position of slide groove 25, guide rod 29 returns to the lowest position of guide frame 211, tilting plate 32 automatically resets to the horizontal state under the gravity of counterweight block 36 and the blocking effect of limit block 311, roller 33 smoothly lands on the crossbeam of bracket 31, funnel 4 returns to normal working posture, lifting plate 22 descends along lifting groove 21 to the initial position, the entire mechanism reset is completed, funnel 4 can be directly put into production operation without secondary calibration.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A funnel tilting mechanism that requires no disassembly or maintenance, comprising a tilting frame (1) and a funnel (4), characterized in that, The tilting frame (1) is equipped with a drive assembly for driving tilting and lifting; The drive assembly includes a lifting slot (21) on the tilting frame (1). The two lifting slots (21) on the same side are slidably connected to a lifting plate (22) that can be raised and lowered during the tilting of the funnel (4). A guide rod (29) is provided on the side of the two lifting plates (22) that are far apart from each other. Two hydraulic telescopic rods (210) are rotatably connected to the bottom of the side of the two lifting plates (22) that are far apart from each other. Two guide frames (211) corresponding to the position of the guide rod (29) are fixedly connected to the outside of the tilting frame (1). The guide rod (29) and the guide frame (211) work together to enable the lifting plate (22) to be raised and lowered. A tilting assembly for tilting the funnel (4) is provided between the two lifting plates (22). The flipping assembly includes a flipping plate (32) disposed between two lifting plates (22) for driving the funnel (4) to flip.

2. The funnel tilting mechanism that requires no disassembly or maintenance according to claim 1, characterized in that, The drive assembly also includes two auxiliary wheels (23) rotatably connected to both sides of the two lifting plates (22). A trapezoidal groove (24) is provided on the side of the two lifting plates (22) that is close to each other, and a sliding groove (25) is provided on the side of the two lifting plates (22) that is far from each other. A trapezoidal block (26) is slidably connected inside the two trapezoidal grooves (24). A sliding rod (27) is fixedly connected on the side of the two trapezoidal blocks (26) that is far from each other, and a groove plate (28) is fixedly connected on the side of the two trapezoidal blocks (26) that is close to each other. The top ends of the telescopic shafts of the two hydraulic telescopic rods (210) on the same side are rotatably connected to the sliding rod (27).

3. The funnel tilting mechanism that requires no disassembly or maintenance according to claim 2, characterized in that, The tops of both guide frames (211) are set in an M-shape.

4. The funnel tilting mechanism that requires no disassembly or maintenance according to claim 2, characterized in that, Each auxiliary wheel (23) rolls against the outer surfaces of both sides of the tilting frame (1), the trapezoidal groove (24) is connected to the slide groove (25), the two slide rods (27) slide inside the slide groove (25) respectively, and the two guide rods (29) slide on the upper surfaces of the two guide frames (211) respectively.

5. The funnel tilting mechanism that requires no disassembly or maintenance according to claim 2, characterized in that, The flipping assembly includes two brackets (31) fixedly connected to the two lifting plates (22) on the side close to each other. Two limit blocks (311) are fixedly connected to each of the two brackets (31). Two rollers (33) are rotatably connected to both sides of the flipping plate (32). Upright plates (34) are fixedly connected to both sides of the flipping plate (32). Guide blocks (35) are fixedly connected to the top of the side of the two upright plates (34) that are far apart from each other. Two counterweights (36) are fixedly connected to the bottom of the flipping plate (32).

6. The funnel tilting mechanism that requires no disassembly or maintenance according to claim 5, characterized in that, Both brackets (31) consist of a crossbeam and two semi-circular grooves. The two semi-circular grooves of the bracket (31) are fixedly connected to the upper surfaces of both ends of the crossbeam. The middle of the flip plate (32) has an opening that matches the funnel (4). The funnel (4) is fixedly installed in the opening of the flip plate (32). The size of the roller (33) matches the internal shape and size of the two semi-circular grooves of the bracket (31). The roller (33) is located between the semi-circular groove of the bracket (31) and an adjacent limiting block (311).

7. The funnel tilting mechanism that requires no disassembly or maintenance according to claim 5, characterized in that, Two rollers (33) on the same side will roll on the bracket (31) on the adjacent side, and two guide blocks (35) will slide inside the two slot plates (28) respectively.

8. A funnel-turning method that requires no disassembly or maintenance, applied to the funnel-turning mechanism that requires no disassembly or maintenance as described in claims 1-7, characterized in that, The method includes: Step 1: Control the extension shaft of the hydraulic telescopic rod (210) on the side to be flipped. During the extension of the hydraulic telescopic rod (210), push the slide rod (27) to slide horizontally in the slide groove (25), and simultaneously drive the trapezoidal block (26) to move horizontally along the trapezoidal groove (24). At the same time, the slide rod (27) drives the guide rod (29) to slide along the upper surface of the guide frame (211), providing guiding power for the subsequent lifting of the lifting plate (22). Step 2: When the guide rod (29) slides along the rising section of the guide frame (211), the lifting plate (22) is driven to move upward along the lifting groove (21) through the slide rod (27). The auxiliary wheel (23) rolls smoothly against the outer wall of the tilting frame (1). During the lifting process, the lifting plate (22) simultaneously drives the bracket (31), the tilting plate (32) and the funnel (4) to rise as a whole, so that the bottom of the funnel (4) is completely separated from the feed inlet of the conveying device below. When the guide rod (29) runs to the top horizontal section of the guide frame (211), the lifting plate (22) remains stationary at the highest position, leaving a safe space for the tilting of the funnel (4). Step 3: When the trapezoidal block (26) moves horizontally, it drives the groove plate (28) to move synchronously. The guide block (35) pulls the vertical plate (34) and the flipping plate (32) to move horizontally. The roller (33) rolls along the crossbeam of the bracket (31) in the flipping direction. The roller (33) is locked into the semi-circular groove block at the end of the bracket (31). When the groove plate (28) continues to move, it pulls the vertical plate (34) to flip upward with the roller (33) as the axis. The flipping plate (32) drives the funnel (4) to flip synchronously until the target repair surface faces downward. The guide rod (29) slides along the descending section of the guide frame (211). The lifting plate (22) drives the flipped funnel (4) to descend to the low position. Step 4: After completing the maintenance on one side, start the extension of the hydraulic telescopic rod (210) on the other side, close the original working hydraulic telescopic rod (210), slide rod (27) slides horizontally in the opposite direction along slide groove (25), groove plate (28) pushes vertical plate (34) in the opposite direction to drive flip plate (32) to return to the horizontal state, roller (33) returns to the middle position along bracket (31) crossbeam, and then moves to the other side semicircular groove block. After roller (33) is inserted into the other side semicircular groove block, flip plate (32) flips in the opposite direction with roller (33) on this side as the axis, so that the other side of the funnel (4) to be maintained faces the lower position; Step 5: After all maintenance and cleaning are completed, control the hydraulic telescopic rods (210) on both sides to retract synchronously, slide rod (27) returns to the middle position of slide groove (25), guide rod (29) returns to the lowest position of guide frame (211), flip plate (32) automatically resets to the horizontal state under the gravity of counterweight block (36) and the blocking effect of limit block (311), roller (33) smoothly falls on the crossbeam of bracket (31), funnel (4) returns to normal working posture, lifting plate (22) descends along lifting groove (21) to the initial position, the entire mechanism reset is completed, funnel (4) can be directly put into production operation without secondary calibration.

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