Novel hydraulic flushing door

Abstract

The invention relates to the technical field of water treatment equipment, in particular to a novel hydraulic flushing gate which comprises a mounting gantry, an opening and closing control assembly and an upper side strengthening assembly, a water passing window is formed in the mounting gantry, and a turnover blocking gate is arranged on the side, located on the water passing window, of the mounting gantry through a plurality of turnover assemblies; a matching structure of the overturning assembly and the connecting assembly is arranged between the mounting door frame and the overturning blocking door, when the overturning blocking door is normally used, the horizontal supporting plate can conduct auxiliary bearing on the self weight of the overturning blocking door, the influence of excessive stress on the rotating connecting position is avoided, and when the overturning supporting shaft and the combined sleeve are replaced and maintained, the overturning blocking door can be conveniently replaced. In addition, under the matching action of the upper side strengthening assembly and the opening and closing control assembly, the bottom contact position of the overturning blocking door and the mounting portal can be pressed and sealed, and the upper contact position of the overturning blocking door and the mounting portal can also be pressed and sealed; and the plugging and sealing quality of the turnover plugging door on the mounting portal frame is improved.

Description

Technical Field

[0001] This invention relates to the field of water treatment equipment technology, specifically a novel hydraulic flushing door. Background Technology

[0002] Hydraulic flushing gates are a type of high-efficiency water conservancy facility cleaning equipment, mainly used in rainwater storage tanks, large drainage pipes, and rivers. They use powerful water flow to remove sediment, impurities, and garbage accumulated at the bottom, ensuring the smooth operation of the water conservancy system and the cleanliness of the water. When used in environmental protection water tanks, a certain amount of water is stored on one side. After the water in the water treatment tank is drained, the hydraulic flushing gate can be opened. At this time, the water in the storage tank can flush the debris at the bottom of the tank, reducing manual dredging and achieving the goals of high-efficiency flushing, cost-effectiveness, durable structure, and environmental protection. Most existing hydraulic flushing gates are made of stainless steel and require hoisting equipment for manufacturing and assembly. The gate and the mounting frame are usually connected by a pivot pin. When closed, the gate is closed, and a clamping frame controlled by a hydraulic cylinder at the bottom presses the bottom of the gate against the mounting frame. However, because the connection between the gate and the mounting frame is a metal rotating connection, after prolonged use, the pivot pin connection is prone to wear due to the weight of the gate itself and wear and tear. This leads to a larger gap between the gate and the mounting frame, affecting the normal use of water storage. In addition, when replacing the gate, since it is already installed at the bottom of the pool, the weight of the gate makes it difficult to replace and maintain the rotating connection components. Summary of the Invention

[0003] The purpose of this invention is to provide a novel hydraulic flushing door to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a novel hydraulic flushing door, comprising: The installation gantry has a water-passing window. On one side of the water-passing window, the installation gantry has a flip-blocking door provided by several flip-mounting components. Each flip-mounting component includes a support connecting box, an L-shaped flip frame, and a movable connecting seat. A movable guide groove is provided on one side of the support connecting box. The movable connecting seat is horizontally inserted into the movable guide groove. The L-shaped flip frame is connected to the movable connecting seat through a connecting component. The connecting component includes a flip support shaft and a combined sleeve. The opening and closing control assembly includes a constraint nut and two first control cylinders. A plurality of L-shaped clamping frames are provided on one side of the constraint nut, and one side of each of the plurality of L-shaped clamping frames is in contact with the lower end of one side of the flip-blocking door. The upper reinforcing component is located inside the support connecting box. The upper reinforcing component includes a second control cylinder, and the second control cylinder is connected to the first control cylinder.

[0005] Preferably, a sealing gasket is provided on the side of the flip-top sealing door and the mounting frame that are close to each other. Several L-shaped flip frames are respectively provided on the upper end of the flip-top sealing door. A horizontal support plate is provided on the lower end of the side of the support connecting box that is close to the L-shaped flip frame. The horizontal section of the L-shaped flip frame overlaps the upper end of the horizontal support plate.

[0006] Preferably, both sides of the upper end of the horizontal support plate are vertically provided with constraint baffles, and the side of the movable connecting seat extending out of the movable guide groove abuts against one side of each of the two constraint baffles. A connecting groove is opened in the center of the side of the movable connecting seat near the constraint baffle, and one end of the L-shaped flipping frame that overlaps the horizontal support plate is inserted into the connecting groove.

[0007] Preferably, the connecting groove of the movable connecting seat has guide grooves extending through both sides, and square sliders are horizontally inserted into each guide groove. A flip support shaft is horizontally provided in the connecting groove, and square through blocks are provided at both ends of the flip support shaft. Two square sliders are inserted through the two through blocks respectively. The diameter of the flip support shaft is smaller than the width of the square sliders.

[0008] Preferably, the combined sleeve is rotatably sleeved on the flip support shaft, and a combined slot is opened on one side of the L-shaped flip frame insertion connecting groove. The combined sleeve is inserted into the combined slot, and two combined baffles are symmetrically arranged on both sides of the combined sleeve. The L-shaped flip frame is located between the two combined baffles. Three combined bolts are inserted into the combined baffles through countersunk holes, and the three combined bolts are respectively threaded into one side of the L-shaped flip frame.

[0009] Preferably, the movable connecting seat has two constraint rings on the outer sides of the L-shaped flip frame. The two constraint rings are located at the ends of the guide slide groove. Each constraint ring has a notch on the side of the guide slide groove. When the combined sleeve is connected to the combined slot of the L-shaped flip frame, the square slider is in the position of the constraint ring. The flip support shaft passes through both ends of the square slider and is provided with fixing screws. The fixing screws are placed inside the constraint rings and are connected with constraint nuts by threads.

[0010] Preferably, the lower end of the mounting frame is provided with a synchronous shaft, and several L-shaped clamping frames are respectively fixed on one side of the synchronous shaft. The vertical ends of the several L-shaped clamping frames are provided with contact rollers, and the contact rollers are respectively flipped to seal the lower end of the door away from the L-shaped flipping frame and squeeze to contact it.

[0011] Preferably, the two first control cylinders are movably disposed on both sides of the mounting gantry near the flip-over sealing door, and the first cylinder rod is movably inserted into each of the second control cylinders. Control arms are fixed at both ends of the synchronous shaft, and the upper end of the control arm is connected to the end of the first cylinder rod that extends out of the first control cylinder by a pin.

[0012] Preferably, the second control cylinder is horizontally disposed in the movable guide groove of the support connecting box, and a second cylinder rod is movably inserted into one side of the second control cylinder. One end of the second cylinder rod extending out of the second control cylinder is fixedly connected to one end of the movable connecting seat inserted into the movable guide groove by bolts.

[0013] Preferably, the first cylinder rod is provided with a first piston at one end inside the first control cylinder. The first control cylinder is provided with a hydraulic release connector and a hydraulic closure interface on both sides of the first piston. A transfer interface is provided on one side of the first control cylinder connected to the hydraulic closure interface. A shunt pipe is provided horizontally below the mounting gantry and several support connection boxes. A transfer oil pipe is inserted between both ends of the shunt pipe and the transfer interfaces of the two first control cylinders. The second cylinder rod is provided with a second piston inside the second control cylinder. A connecting pipe is provided at the lower end of the second piston inside the second control cylinder on the side near the L-shaped tilting frame. The lower ends of several connecting pipes pass through the support connection boxes and are connected to the upper end of the shunt pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are: A cooperative structure of tilting and connecting components is set between the mounting gantry and the tilting sealing door. When the tilting sealing door is in normal use, the horizontal support plate can assist in supporting the weight of the tilting sealing door itself, avoiding excessive stress on the rotation connection position. It is more time-saving and labor-saving when replacing and maintaining the tilting support shaft and the combined sleeve. In addition, with the cooperation of the upper reinforcing component and the opening and closing control component, in addition to pressing and sealing the bottom contact position between the tilting sealing door and the mounting gantry, it can also press and seal the upper contact position between the tilting sealing door and the mounting gantry, improving the sealing quality of the tilting sealing door to the mounting gantry. Attached Figure Description

[0015] Figure 1 This is a first-view schematic diagram of the structure of the present invention; Figure 2 This is a second-view schematic diagram of the structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of part A; Figure 4 For the present invention Figure 3 Schematic diagram of part B; Figure 5 This is a side sectional view of the opening and closing control component of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of part C; Figure 7 This is a side sectional view of the connection between the support connecting box and the L-shaped flipping frame of the present invention; Figure 8 For the present invention Figure 7Schematic diagram of part D; Figure 9 For the present invention Figure 8 Schematic diagram of part E; Figure 10 This is an exploded view of the connection between the support connecting box and the L-shaped flipping frame of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of part F; Figure 12 This is a schematic diagram showing the connection between the square slider and the flip support shaft of the present invention.

[0016] In the diagram: 1. Mounting gantry; 2. Flip-over sealing door; 3. Support connecting box; 4. Horizontal support plate; 5. L-shaped flip-over frame; 6. Movable guide groove; 7. Movable connecting seat; 8. Constraint baffle; 9. Guide slide groove; 10. Square slider; 11. Flip-over support shaft; 12. Combined sleeve; 13. Combined baffle; 14. Combined slot; 15. Combined bolt; 16. Constraint collar; 17. Constraint nut; 18. L-shaped clamping frame; 19. Control arm; 20. First control cylinder; 21. First cylinder rod; 22. Second control cylinder; 23. Second cylinder rod; 24. Diverter pipe; 25. Connecting pipe; 26. Transfer oil pipe; 27. Synchronous shaft. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see the appendix Figure 1-12 This application provides the following technical solutions.

[0019] A novel hydraulic flushing door includes a mounting frame 1 with a water-passing window. A flip-top sealing door 2 is mounted on one side of the mounting frame 1 via several flip-top components. Each flip-top component includes a support connecting box 3, an L-shaped flip frame 5, and a movable connecting seat 7. A movable guide groove 6 is provided on one side of the support connecting box 3, and the movable connecting seat 7 is horizontally inserted into the movable guide groove 6. The L-shaped flip frame 5 is connected to the movable connecting seat 7 via a connecting component, which includes a flip-top support shaft 11 and a combined sleeve 12. Sealing gaskets are provided on the side of the flip-top sealing door 2 and the mounting frame 1 that are close to each other. Several L-shaped flip frames 5 are respectively located at the upper end of the flip-top sealing door 2. A horizontal support plate 4 is horizontally provided at the lower end of the side of the support connecting box 3 near the L-shaped flip frame 5. The horizontal sections of the L-shaped flip frames 5 overlap the upper end of the horizontal support plate 4. The horizontal support plate 4 can support the bottom of the L-shaped flip frames 5, allowing the flip-top sealing door 2 to maintain its top height under gravity.

[0020] Please refer to Figures 3-4 and Figures 10-12 The upper ends of the horizontal support plate 4 are vertically equipped with constraint baffles 8 on both sides. The side of the movable connecting seat 7 extending out of the movable guide groove 6 abuts against one side of each of the two constraint baffles 8. A connecting groove is opened in the center of the side of the movable connecting seat 7 near the constraint baffles 8. The end of the L-shaped flipping frame 5 that overlaps with the horizontal support plate 4 is inserted into the connecting groove. Guide grooves 9 are opened through both sides of the connecting groove of the movable connecting seat 7. Square sliders 10 are horizontally inserted into each guide groove 9. A flipping support shaft 11 is horizontally provided in the connecting groove. Square through blocks are provided at both ends of the flipping support shaft 11. Two square sliders 10 are inserted through the two through blocks respectively. The diameter of the flipping support shaft 11 is smaller than the width of the square sliders 10. The combined sleeve 12 is rotatably sleeved on the flipping support shaft 11. A combined slot 14 is opened on one side of the L-shaped flipping frame 5 inserted into the connecting groove. The combined sleeve 12 is inserted into the combined slot 14. Two sets of combined sleeves are symmetrically arranged on both sides of the combined sleeve 12. The combined baffle 13 and the L-shaped flipping frame 5 are located between the two combined baffles 13. Three combined bolts 15 are inserted into the combined baffles 13 through countersunk holes. The three combined bolts 15 are respectively threaded into one side of the L-shaped flipping frame 5. The flipping support shaft 11 and the combined sleeve 12 can move horizontally in the connecting groove through the two flipping support shafts 11. When the combined sleeve 12 is engaged with the combined slot 14 of the L-shaped flipping frame 5 and fixed by the combined bolts 15, the combined sleeve 12 and the L-shaped flipping frame 5 form a whole. The L-shaped flipping frame 5 and the flipping blocking door 2 can be flipped along the flipping support shaft 11. When the combined bolts 15 are removed, the combined sleeve 12 and the flipping support shaft 11 can be replaced separately, and the L-shaped flipping frame 5 is maintained in an overlapping posture. The movable connecting seat 7 is provided with clearance holes at the position of the combined bolts 15 to facilitate the fixed connection of the combined sleeve 12 and the L-shaped flipping frame 5 by the combined bolts 15.

[0021] The movable connecting seat 7 has two constraint rings 16 on its outer sides near the L-shaped flip frame 5. These two constraint rings 16 are located at the ends of the guide groove 9, and each constraint ring 16 has a notch on its side near the guide groove 9. When the combined sleeve 12 is engaged with the combined slot 14 of the L-shaped flip frame 5, the square slider 10 is positioned in the constraint ring 16. The flip support shaft 11 passes through both ends of the square slider 10 and has fixing screws. The fixing screws are placed inside the constraint rings 16 and are connected by threads to constraint nuts 17. Because the diameter of the flip support shaft 11 is smaller than the width of the square slider 10, the flip support shaft 11 and the square slider 10 can move directly from the guide groove 9. After being pulled out, the combined sleeve 12 is removed from above the connecting groove. At this time, the unworn flip support shaft 11 and combined sleeve 12 can be replaced. After the replacement is completed, the square slider 10, flip support shaft 11 and combined sleeve 12 are pushed horizontally along the guide slide 9 to the combined slot 14 position of the L-shaped flip frame 5. At this time, the fixing screw of the flip support shaft 11 is located at the center of the constraint collar 16. After the constraint nut 17 is threaded to the fixing screw, the constraint nut 17 is placed inside the constraint collar 16 to prevent the constraint nut 17 from detaching from the constraint collar 16. This limits the position of the flip support shaft 11 and combined sleeve 12, ensuring the normal flipping activity of the flip sealing door 2.

[0022] refer to Figure 3 and Figure 6 An opening and closing control assembly is provided to control the opening and closing of the lower part of the flip-top sealing door 2. The opening and closing control assembly includes a constraint nut 17 and two first control cylinders 20. Several L-shaped clamping frames 18 are provided on one side of the constraint nut 17, and one side of each of the L-shaped clamping frames 18 is in contact with the lower end of one side of the flip-top sealing door 2. A synchronous shaft 27 is rotatably provided at the lower end of the mounting frame 1. Several L-shaped clamping frames 18 are fixedly provided on one side of the synchronous shaft 27. Each vertical end of each L-shaped clamping frame 18 is provided with a contact roller, and the contact rollers press against the lower end of the flip-top sealing door 2 on the side away from the L-shaped flip frame 5. The two first control cylinders 20 are movably located on both sides of the mounting frame 1 near the flip-top sealing door 2. The second control cylinders 22 are each The first cylinder rod 21 is movably connected, and control arms 19 are fixed at both ends of the synchronous shaft 27. The upper end of the control arm 19 is connected to the end of the first cylinder rod 21 that extends out of the first control cylinder 20 by a pin. When the first cylinder rod 21 extends, the control arm 19 controls the synchronous shaft 27 to flip, and the L-shaped clamping frame 18 releases the clamping on the bottom of the flipping sealing door 2. At this time, the flipping sealing door 2 flips through the L-shaped flipping frame 5 and the flipping support shaft 11. The lower part of the flipping sealing door 2 opens under the action of water flow on the other side, and the bottom of the pool on the side of the flipping sealing door 2 is flushed by water flow. After the flushing is completed, the flipping sealing door 2 is reset under the action of gravity. At this time, the first cylinder rod 21 is pulled back, and the L-shaped clamping frame 18 clamps and seals the lower side wall of the flipping sealing door 2.

[0023] Reference diagram: active guide groove 6 and Figure 9 An upper reinforcing component is installed to press and seal the upper side of the flip-top sealing door 2 and the mounting frame 1. The upper reinforcing component is located inside the support connection box 3. The upper reinforcing component includes a second control cylinder 22, which is connected to the first control cylinder 20. The second control cylinder 22 is horizontally located in the movable guide groove 6 of the support connection box 3. A second cylinder rod 23 is movably inserted into one side of the second control cylinder 22. One end of the second cylinder rod 23 extending out of the second control cylinder 22 is fixedly connected to one end of the movable connecting seat 7 inserted into the movable guide groove 6 by bolts. The second cylinder rod 23 can horizontally pull the movable connecting seat 7 in the movable guide groove 6, so as to realize the upper side of the flip-top sealing door 2 presses against the mounting frame 1 to achieve a reinforced seal. The setting of the constraint baffle 8 can prevent the movable connecting seat 7 from detaching from the support connection box 3.

[0024] The first cylinder rod 21, located within the first control cylinder 20, has a first piston at one end. The first control cylinder 20 has a hydraulic release connector and a hydraulic closure interface on either side of the first piston. One side of the first control cylinder 20 has an adapter interface connected to the hydraulic closure interface. The mounting gantry 1, located below several support connection boxes 3, has a horizontally positioned diversion pipe 24. Both ends of the diversion pipe 24 are connected to the adapter interfaces of the two first control cylinders 20, with adapter oil pipes 26 inserted between them. The second cylinder rod 23, located within the second control cylinder 22, has a second piston. The lower end of the second piston within the second control cylinder 22, near the L-shaped tilting frame 5, is connected to a connecting pipe 25. Furthermore, the lower ends of several connecting pipes 25 pass through the support connecting box 3 and are connected to the upper end of the diversion pipe 24. When hydraulic oil is supplied to the closed hydraulic interface of the first control cylinder 20, the first cylinder rod 21 retracts, and the L-shaped clamping frame 18 clamps and seals the bottom of the flip-top sealing door 2. At this time, the high-pressure hydraulic oil can enter the diversion pipe 24 from the transfer oil pipe 26, and then enter each of the second control cylinders 22 under the action of the connecting pipe 25. Then, under the pushing action of the second piston, several second cylinder rods 23 pull the upper side of the flip-top sealing door 2, so that the upper side of the flip-top sealing door 2 is also clamped and sealed with the mounting frame 1, thereby improving the sealing performance of the device.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel hydraulic flushing door, characterized in that, include: The mounting frame (1) has a water window. The mounting frame (1) is located on one side of the water window and has a flip-blocking door (2) through several flip components. Each flip component includes a support connecting box (3), an L-shaped flip frame (5) and a movable connecting seat (7). A movable guide groove (6) is opened on one side of the support connecting box (3). The movable connecting seat (7) is horizontally inserted into the movable guide groove (6). The L-shaped flip frame (5) is connected to the movable connecting seat (7) through a connecting component. The connecting component includes a flip support shaft (11) and a combination sleeve (12). The opening and closing control assembly includes a constraint nut (17) and two first control cylinders (20). A plurality of L-shaped clamping frames (18) are provided on one side of the constraint nut (17), and one side of each of the plurality of L-shaped clamping frames (18) is in contact with the lower end of one side of the flip-blocking door (2). The upper reinforcing component is located inside the support connecting box (3). The upper reinforcing component includes a second control cylinder (22) and is connected to the first control cylinder (20).

2. The novel hydraulic flushing door according to claim 1, characterized in that: Sealing gaskets are provided on the side of the flip-top sealing door (2) and the mounting frame (1) that are close to each other. Several L-shaped flip frames (5) are respectively located on the upper end of the flip-top sealing door (2). The lower end of the support connecting box (3) near the L-shaped flip frame (5) is provided with a horizontal support plate (4). The horizontal section of the L-shaped flip frame (5) overlaps the upper end of the horizontal support plate (4).

3. A novel hydraulic flushing door according to claim 2, characterized in that: The upper sides of the horizontal support plate (4) are vertically provided with constraint baffles (8). The side of the movable connecting seat (7) extending out of the movable guide groove (6) abuts against the side of the two constraint baffles (8). The center of the side of the movable connecting seat (7) near the constraint baffle (8) is provided with a connecting groove, and the end of the L-shaped flipping frame (5) that overlaps the horizontal support plate (4) is inserted into the connecting groove.

4. A novel hydraulic flushing door according to claim 3, characterized in that: The movable connecting seat (7) has guide grooves (9) that pass through both sides of the connecting groove. Square sliders (10) are horizontally inserted in the guide grooves (9). A flip support shaft (11) is horizontally provided in the connecting groove. Square through blocks are provided at both ends of the flip support shaft (11). Two square sliders (10) are inserted through the two through blocks respectively. The diameter of the flip support shaft (11) is smaller than the width of the square sliders (10).

5. A novel hydraulic flushing door according to claim 4, characterized in that: The combined sleeve (12) is rotatably connected to the flip support shaft (11). The L-shaped flip frame (5) is inserted into the connecting groove and a combined slot (14) is provided on one side. The combined sleeve (12) is inserted into the combined slot (14). Two combined baffles (13) are symmetrically provided on both sides of the combined sleeve (12). The L-shaped flip frame (5) is located between the two combined baffles (13). Three combined bolts (15) are inserted into the combined baffles (13) through countersunk holes. The three combined bolts (15) are respectively inserted into one side of the L-shaped flip frame (5) through threads.

6. A novel hydraulic flushing door according to claim 5, characterized in that: The movable link seat (7) is provided with two constraint rings (16) on the outside of both sides near the L-shaped flip frame (5). The two constraint rings (16) are located at the ends of the guide groove (9). The two constraint rings (16) are provided with notches on the side near the guide groove (9). When the combined sleeve (12) is connected to the combined slot (14) of the L-shaped flip frame (5), the square slider (10) is in the position of the constraint ring (16). The flip support shaft (11) passes through both ends of the square slider (10) and is provided with fixing screws. The fixing screws are placed in the constraint ring (16) and are provided with constraint nuts (17) by threaded connection.

7. A novel hydraulic flushing door according to claim 6, characterized in that: The lower end of the mounting frame (1) is provided with a synchronous shaft (27) for rotation. Several L-shaped clamping frames (18) are fixed on one side of the synchronous shaft (27). The vertical ends of the several L-shaped clamping frames (18) are provided with contact rollers, and the contact rollers are flipped to seal the lower end of the door (2) away from the L-shaped flipping frame (5) and squeeze to contact it.

8. A novel hydraulic flushing door according to claim 7, characterized in that: Two first control cylinders (20) are movably mounted on both sides of the mounting frame (1) near the flip-top sealing door (2). The first cylinder rod (21) is movably inserted into the second control cylinder (22). Control arms (19) are fixed at both ends of the synchronous shaft (27). The upper end of the control arm (19) is connected to the end of the first cylinder rod (21) that extends out of the first control cylinder (20) by a pin.

9. A novel hydraulic flushing door according to claim 8, characterized in that: The second control cylinder (22) is horizontally positioned in the movable guide groove (6) of the support connecting box (3). A second cylinder rod (23) is movably inserted into one side of the second control cylinder (22). One end of the second cylinder rod (23) extending out of the second control cylinder (22) is fixedly connected to one end of the movable connecting seat (7) inserted into the movable guide groove (6) by bolts.

10. A novel hydraulic flushing door according to claim 9, characterized in that: The first cylinder rod (21) is provided with a first piston at one end inside the first control cylinder (20). The first control cylinder (20) is provided with a hydraulic release connector and a hydraulic closure interface on both sides of the first piston. The first control cylinder (20) is provided with a transfer interface connected to the hydraulic closure interface on one side. The mounting gantry (1) is provided with a horizontal diversion pipe (24) below several support connection boxes (3). Both ends of the diversion pipe (24) are connected to the transfer interfaces of the two first control cylinders (20) with a transfer oil pipe (26). The second cylinder rod (23) is provided with a second piston inside the second control cylinder (22). The lower end of the second piston inside the second control cylinder (22) is connected to a connecting pipe (25) on the side of the second piston near the L-shaped tilting frame (5). The lower ends of several connecting pipes (25) pass through the support connection box (3) and are connected to the upper end of the diversion pipe (24).

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