A disc-type environmental protection dredging auger

Abstract

The present invention relates to a disc-type environmentally friendly dredging auger, comprising a connecting rotating structure, an angle adjustment hydraulic cylinder, a supporting structure, an auger body, an auger hydraulic drive device, a water baffle hydraulic cylinder, and a water baffle; the connecting rotating structure is used to connect the dredging suction ship bridge frame and the supporting structure, and the supporting structure is used to support the auger hydraulic drive device and the auger body; the connecting rotating structure is hinged with the supporting structure through the angle adjustment hydraulic cylinder, and the relative angle between the two is adjusted by the angle adjustment hydraulic cylinder telescopically; the auger hydraulic drive device is located inside the supporting structure, and is used to drive the auger body to rotate; the auger body is located at the bottom of the supporting structure, and the bottom of the auger body is a plane structure; the water baffle hydraulic cylinder can be rotatably installed on the supporting structure, the water baffle is located at the periphery of the auger body, the water baffle is hinged with the water baffle hydraulic cylinder, and the water baffle hydraulic cylinder telescopically drives the water baffle to move up and down to adjust the dredging thickness. The present invention improves the dredging flatness and reduces secondary pollution during dredging.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection dredging engineering equipment, and in particular relates to a disc-type environmental protection dredging auger. Background Art

[0002] During environmental dredging construction, dredgers use their excavation equipment to dredge contaminated sludge deposited on the bottom of lakes, rivers, etc. The dredged contaminated soil is discharged to the treatment site through the mud pump installed on the dredger.

[0003] Environmental dredging construction requires high dredging accuracy and the need to reduce the spread of secondary pollution during construction. In particular, when dredging underwater toxic and harmful pollutants, there are strict requirements on the positioning accuracy of the dredging depth direction. On the other hand, during dredging construction, it is required to minimize the disturbance of the excavation equipment to the surrounding water body to prevent the polluted bottom mud from having an adverse effect on the surrounding water body and aquatic organisms.

[0004] At present, the dredgers involved in environmental dredging construction include cutter suction dredgers, grab ships, bucket ships, etc., but most of them are ordinary dredgers and cannot meet the technical requirements of environmental dredging construction.

[0005] Cutter suction dredger has the advantages of strong adaptability to engineering, high dredging productivity, and long mud discharge distance, and has been widely used in inland lake and river dredging projects. Cutter suction dredger consists of hull, control room, bridge, auger, trolley, main steel pile, auxiliary steel pile, mud pump, etc. The hull consists of main pontoon, side pontoons on both sides and trolley pontoon at the rear of the hull. To facilitate land transportation, the pontoons can be disassembled for separate transportation and assembled on site. Mud pumps, mud pump driving devices and auxiliary equipment are arranged in the main pontoon; the ship control room is located on the main pontoon and is the control center of the dredging operation; the bridge is supported on the side pontoons, and an environmentally friendly auger is installed at the front of the bridge. During dredging construction, the bridge is lowered underwater through the winch wire rope; the trolley is used to operate and control the forward movement of the dredger during construction; the main and auxiliary steel piles are used to control the positioning of the ship during construction.

[0006] When a cutter suction dredger carries out dredging construction, after the auger is lowered to the required dredging depth, the dredger swings left and right with the main steel pile as the center to dredge. The dredging area after one swing is fan-shaped. After completing one swing, the ship moves forward a certain distance under the push of the trolley, and the contaminated sludge dug by the auger is transported to the designated yard by the mud pump installed on the ship through the mud discharge pipe.

[0007] Among them, the auger is responsible for excavating the underwater mud, and the auger drive device located on the bridge of the dredging vessel is connected to the auger hub through the auger shaft.

[0008] During the construction of the dredger suction dredger, the auger blade is in direct contact with the mud surface. Since the auger blade is in an arc shape, when it swings left and right to dredge, the dredged mud surface is an arc shape, which affects the flatness of the dredging and leads to low dredging accuracy. In addition, due to the disturbance of the auger head, the underwater polluted bottom mud dug by the auger is easy to spread around the auger head, causing secondary pollution diffusion. Therefore, it is urgent to design a dredging auger that can improve the accuracy of environmental dredging construction and reduce the diffusion of secondary pollution during construction. Summary of the invention

[0009] In view of the problems existing in the current common cutter suction dredgers in environmental protection dredging projects, the present invention provides a disc-type environmental protection dredging cutter, which achieves the purpose of improving the dredging flatness and reducing secondary pollution during the dredging process.

[0010] The present invention is implemented as follows: a disc-type environmentally friendly dredging auger comprises a connecting rotating structure, an angle adjusting hydraulic cylinder, a supporting structure, an auger body, an auger hydraulic driving device, a water baffle hydraulic cylinder, and a water baffle;

[0011] The connecting rotating structure is used to connect the dredging vessel bridge and the supporting structure, and the supporting structure is used to support the reamer hydraulic driving device and the reamer body; the upper part of the connecting rotating structure is hinged to the supporting structure through an angle-adjusting hydraulic cylinder, and the lower part of the connecting rotating structure is hinged to the supporting structure, and the relative angle between the two is adjusted by the extension and contraction of the angle-adjusting hydraulic cylinder plunger, so that the bottom of the reamer body is always in contact with the mud surface; the reamer hydraulic driving device is located inside the supporting structure, and is used to drive the reamer body to rotate;

[0012] The reamer body is located at the bottom of the supporting structure, and the bottom of the reamer body is a plane structure;

[0013] The water baffle hydraulic cylinder can be rotatably installed on the supporting structure, the water baffle is located on the periphery of the reamer body, the water baffle is hinged to the water baffle hydraulic cylinder, the water baffle hydraulic cylinder is extended and retracted to drive the water baffle to move up and down to adjust the dredging thickness, and the water baffle hydraulic cylinder and the water baffle are arranged symmetrically relative to the reamer body.

[0014] The bridge connection structure is used to connect the cutter suction boat bridge and the disc auger as a whole, and the support structure is used to support the auger body and its drive system. The auger hydraulic drive device located in the support structure drives the auger body to rotate. The auger body with a flat bottom structure always fits the mud surface, which improves the dredging flatness. The function of the left and right water retaining plates is to prevent excessive water from entering the auger through its up and down lifting and lowering during construction, so as to achieve the purpose of reducing secondary pollution.

[0015] In the above technical scheme, preferably, the connecting and rotating structure includes a connecting structure body, a bridge connecting flange, a hydraulic cylinder rotating ear plate and a supporting structure connecting ear plate, the connecting structure body is a box-shaped structure, the bridge connecting flange is located on one side of the connecting structure body, and is used to connect the bridge of the dredging vessel; the hydraulic cylinder rotating ear plate is located on the upper part of the connecting structure body, the hydraulic cylinder rotating ear plate is hinged with the cylinder body of the angle adjustment hydraulic cylinder through a pin shaft, and the supporting structure connecting ear plates are located on both sides of the lower part of the connecting structure body, and are used to connect the supporting structure.

[0016] In the above technical solution, preferably, the relative rotation angle between the connecting rotation structure and the supporting structure is adjusted between 0° and 45°.

[0017] In the above technical solution, preferably, the reamer hydraulic drive device is located in the cylinder of the supporting structure, and the reamer hydraulic drive device includes a reamer hydraulic motor and a reamer shaft. The reamer hydraulic motor is connected to one end of the reamer shaft, and the other end of the reamer shaft passes through the circular flat plate at the bottom of the cylinder of the supporting structure, and is connected to the hub of the reamer body through a flange.

[0018] In the above technical solution, it is further preferred that a support bearing, a bearing seat and a reamer shaft seal are installed on the reamer shaft located below the circular flat plate.

[0019] In the above technical scheme, preferably, the supporting structure includes a cylinder body, a reamer casing, and a water baffle moving guide rail. An angle hydraulic cylinder ear plate is provided on the upper rear side of the cylinder body, and the angle hydraulic cylinder ear plate and the plunger ear ring of the angle adjustment hydraulic cylinder are connected by a pin shaft; a circular flat plate is provided at the root of the cylinder body, a reamer casing is provided on the periphery of the circular flat plate, and water baffle moving guide rails are symmetrically installed on the front and rear sides of the reamer casing, and two left and right water baffles are installed between the water baffle moving guide rails, and the water baffle hydraulic cylinder is extended and retracted to drive the water baffle to move up and down along the water baffle moving guide rail; a mud suction port is provided on the circular flat plate, and the mud suction port is used to connect an elbow-shaped mud suction pipe to suck in mud and transport it to the bridge frame mud discharge pipe.

[0020] In the above technical scheme, it is further preferred that support steel pipes are symmetrically arranged on the left and right sides of the middle part of the cylinder, and the support steel pipes are fixed on the cylinder; the rear ends of the two support steel pipes on the left and right sides are respectively provided with rotating support ear plates, and the rotating support ear plates are connected to the support structure connecting ear plates of the rotating structure through pins; lifting hydraulic cylinder ear plates are respectively provided on the two support steel pipes on the left and right sides, and the cylinder body of the water baffle hydraulic cylinder is rotatably installed on the corresponding lifting hydraulic cylinder ear plates through pins, and the outer side of the water baffle is installed with a hydraulic cylinder connecting ear plate, and the hydraulic cylinder connecting ear plate is hinged to the plunger end of the water baffle hydraulic cylinder through a pin.

[0021] In the above technical solution, preferably, the water retaining plate is a semi-cylindrical structure, and the water retaining plate is composed of an outer sealing plate, an inner sealing plate, an upper sealing plate, and a lower sealing plate. The interior of the water retaining plate is a hollow structure, and reinforcing ribs are arranged inside.

[0022] In the above technical solution, preferably, the reamer body is a cylindrical structure, the upper part of the reamer body is located in the reamer casing at the bottom of the supporting structure, the reamer body is composed of a reamer blade, a bottom supporting disc, a hub and a top supporting ring, the reamer blade is located between the bottom supporting disc and the top supporting ring, the hub is located in the middle of the bottom supporting disc, and the hub is provided with a flange connected to the reamer shaft.

[0023] In the above technical solution, it is further preferred that the reamer blades are arranged at a certain angle from the bottom support disc to the top support ring, and are welded to the bottom support disc and the top support ring as a whole.

[0024] Compared with the prior art, the present invention has the following advantages and positive effects:

[0025] ① The present invention utilizes a cylindrical reamer, and adjusts the bottom support disc of the reamer body by an angle adjustment hydraulic cylinder so that the disc always fits the mud surface, thereby improving the dredging flatness and environmental dredging accuracy.

[0026] ② The present invention utilizes a water baffle controlled by a hydraulic cylinder, which can not only adjust the primary dredging thickness of the environmental protection reamer, but also control the amount of water entering the environmental protection reamer during the dredging process, thereby reducing the spread of secondary pollution during the dredging process.

[0027] ③ The application of the present invention in construction production will bring huge economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional diagram of a disc-type environmentally friendly dredging auger provided by an embodiment of the present invention;

[0029] Figure 2 This is a front view of a disc-type environmentally friendly dredging auger provided by an embodiment of the present invention;

[0030] Figure 3 is a side view of a disc-type environmentally friendly dredging auger provided by an embodiment of the present invention;

[0031] Figure 4 is a three-dimensional diagram of a connecting and rotating structure provided by an embodiment of the present invention;

[0032] Figure 5 is a three-dimensional diagram of a support structure provided by an embodiment of the present invention;

[0033] Figure 6 is a three-dimensional diagram of a reamer body provided by an embodiment of the present invention;

[0034] Figure 7 It is a three-dimensional diagram of a water retaining plate provided in an embodiment of the present invention.

[0035] In the figure: 1, connecting rotating structure; 101, connecting structure body; 102, bridge connecting flange; 103, hydraulic cylinder rotating ear plate; 104, supporting structure connecting ear plate;

[0036] 2. Angle adjustment hydraulic cylinder;

[0037] 3. Support structure; 301. Cylinder; 302. Round flat plate; 303. Cutter casing; 304. Water retaining plate moving guide rail; 305. Horizontal support steel pipe; 306. Longitudinal support steel pipe; 307. Angle hydraulic cylinder ear plate; 308. Mud suction pipe; 309. Reinforcement rib plate; 310. Rotation support ear plate; 311. Lifting hydraulic cylinder ear plate;

[0038] 4. reamer body; 401. reamer blade; 402. bottom support disc; 403. hub; 404. top support ring;

[0039] 501, reamer hydraulic motor; 502, reamer shaft; 503, support bearing; 504, bearing seat; 505, reamer shaft seal;

[0040] 6. Water baffle hydraulic cylinder;

[0041] 7. Water retaining plate; 701. External sealing plate; 702. Internal sealing plate; 703. Upper sealing plate; 704. Lower sealing plate; 705. Hydraulic cylinder connecting ear plate. DETAILED DESCRIPTION

[0042] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0043] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Example

[0046] like Figures 1 to 7 As shown, an embodiment of the present invention provides a disc-type environmentally friendly dredging auger, including a connecting rotating structure 1, an angle adjustment hydraulic cylinder 2, a supporting structure 3, a auger body 4, a auger hydraulic drive device, a water baffle hydraulic cylinder 6, and a water baffle 7.

[0047] The connecting rotating structure 1 is used to connect the bridge frame of the dredging vessel and the supporting structure 3. The connecting rotating structure 1 includes a connecting structure body 101, a bridge frame connecting flange 102, a hydraulic cylinder rotating ear plate 103 and a supporting structure connecting ear plate 104. The connecting structure body 101 is a box-shaped structure. The bridge frame connecting flange 102 is located on one side of the connecting structure body 101 and is used to connect the bridge frame of the dredging vessel. The hydraulic cylinder rotating ear plate 103 is located at the upper part of the connecting structure body 101. The hydraulic cylinder rotating ear plate 103 is hinged to the cylinder body of the angle adjustment hydraulic cylinder 2 through a pin shaft. The plunger end of the angle adjustment hydraulic cylinder 2 is hinged to the supporting structure 3; the supporting structure connecting ear plates 104 are located on both sides of the lower part of the connecting structure body 101. The supporting structure connecting ear plates 104 are directly hinged to the supporting structure 3. The relative angle between the connecting rotating structure 1 and the supporting structure 3 is adjusted by extending and retracting the plunger of the angle-adjusting hydraulic cylinder 2, so that the bottom of the reamer body 4 is always in close contact with the mud surface, and the relative rotation angle between the connecting rotating structure 1 and the supporting structure 3 is adjusted between 0° and 45°. The number of angle-adjusting hydraulic cylinders 2 is 1 to 2, the stroke is 300 to 800 mm, the cylinder diameter is 60 to 140 mm, and the rod diameter is 20 to 80 mm.

[0048] The connecting rotating structure 1 is a steel welded structure, formed by welding Q345 high-strength steel plates. To ensure sufficient strength and rigidity, reinforcing ribs are welded inside the connecting structure body 101 .

[0049] The support structure 3 is used to support the reamer hydraulic drive device and the reamer body 4. The support structure 3 includes a cylinder 301, a circular flat plate 302, a reamer casing 303, a water retaining plate moving guide rail 304, a transverse support steel pipe 305, and a longitudinal support steel pipe 306.

[0050] The cylinder 301 is the support of the entire disc reamer. It is welded and formed by Q345 high-strength steel plate. Reinforcement ribs are arranged inside the cylinder 301 to ensure sufficient strength and rigidity. An angle hydraulic cylinder ear plate 307 is arranged on the upper rear side of the cylinder 301. The angle hydraulic cylinder ear plate 307 and the plunger ear ring of the angle adjustment hydraulic cylinder 2 are connected by a pin shaft. A circular flat plate 302 is arranged at the root of the cylinder 301. A mud suction port is arranged on the circular flat plate 302. The mud suction port is used to connect the elbow-shaped mud suction pipe 308 to suck mud and transport it to the bridge frame mud discharge pipe; a reamer casing 303 is arranged on the periphery of the circular flat plate 302. A reinforcement rib plate 309 is also arranged between the reamer casing 303 located on the circular flat plate 302 and the cylinder 301. The front and rear sides of the reamer casing 303 are symmetrically installed with a water retaining plate moving guide rail 304.

[0051] A transverse support steel pipe 305 and a longitudinal support steel pipe 306 are symmetrically arranged on the left and right sides of the middle of the cylinder 301. The transverse support steel pipe 305 is fixed on the cylinder 301, and the longitudinal support steel pipe 306 is fixed on the transverse support steel pipe 305. The rear ends of the two longitudinal support steel pipes 306 on the left and right sides are respectively provided with rotation support ear plates 310, and the rotation support ear plates 310 are connected to the support structure connection ear plates 104 of the connection rotation structure 1 through the pin shaft. Two lifting hydraulic cylinder ear plates 311 are respectively arranged on the two longitudinal support steel pipes 306 on the left and right sides.

[0052] The reamer hydraulic drive device is located in the cylinder 301 of the support structure 3, and is used to drive the reamer body 4 to rotate; the reamer hydraulic drive device includes a reamer hydraulic motor 501 and a reamer shaft 502, the reamer hydraulic motor 501 is connected to one end of the reamer shaft 502, and the other end of the reamer shaft 502 passes through the circular plate 302 at the bottom of the cylinder 301 of the support structure 3, and is connected to the hub 403 of the reamer body 4 through a flange. A support bearing 503, a bearing seat 504 and a reamer shaft seal 505 are installed on the reamer shaft 502 located below the circular plate 302. A reamer hydraulic motor 501 is installed inside the cylinder 301 of the support structure 3, and a reamer shaft 502 is connected to the reamer body 4 hub 403 through a flange, so that the reamer hydraulic motor 501 transmits power to the reamer body 4 through the reamer shaft 502, and a support bearing 503 is installed on the reamer shaft 502 to withstand the radial force and axial force of the reamer when working, and a reamer shaft seal 505 is installed to ensure that the reamer shaft 502 is well sealed. The reamer shaft 502 is made of 42CrMo alloy steel and is quenched and tempered.

[0053] The reamer body 4 is a cylindrical structure, the upper part of which is located in the reamer casing 303 at the bottom of the supporting structure 3, and the bottom of the reamer body 4 is a planar structure in contact with the mud surface. When dredging, the bottom support disc 402 is always in close contact with the mud surface to ensure the smoothness of dredging.

[0054] The reamer body 4 is composed of a reamer blade 401, a bottom support disc 402, a hub 403 and a top support ring 404. The reamer blade 401 is located between the bottom support disc 402 and the top support ring 404. The reamer blade 401 is arranged at a certain angle from the bottom support disc to the top support ring, and is welded to the bottom support disc 402 and the top support ring 404. The number of reamer blades 401 is 6 to 12, and the thickness of the reamer blade 401 is 20 mm to 40 mm. In this embodiment, 12 reamer blades 401 are evenly arranged along the circumferential direction, and the reamer blades 401 are made of 20CrNiMo. The hub 403 is welded in the middle of the steel bottom support disc 402, and the hub 403 is connected to the reamer shaft 502 through a flange.

[0055] The cylinder bodies of the four water baffle hydraulic cylinders 6 on the left and right sides are rotatably mounted on the corresponding lifting hydraulic cylinder ear plates 311 through pins. The cylinder diameter of the water baffle hydraulic cylinder 6 is 40mm-100mm, the rod diameter is 20mm-80mm, and the stroke is 200mm-500mm.

[0056] The water baffle 7 is a semi-cylindrical structure. The left and right water baffles 7 are located outside the reamer casing 303 and between the water baffle moving guide rails 304. The cavity structure formed by the cooperation between the water baffle 7 and the reamer casing 303 is used for mud collection and mixing. The water baffle 7 is composed of an outer sealing plate 701, an inner sealing plate 702, an upper sealing plate 703, and a lower sealing plate 704. The interior of the water baffle 7 is a hollow structure and is provided with reinforcing ribs. The water baffle 7 is welded from Q235 or Q345 steel plates with a thickness of 4 to 8 mm. The up and down moving distance of the water baffle 7 is 100 to 500 mm. Two hydraulic cylinder connecting ear plates 705 are respectively installed on the outer side surface of the outer sealing plate 701 of each water baffle plate 7. The hydraulic cylinder connecting ear plates 705 are hinged to the plunger end of the water baffle plate hydraulic cylinder 6 through a pin shaft. The water baffle plate hydraulic cylinder 6 is extended and retracted to drive the water baffle plate 7 to move up and down along the water baffle plate moving guide rail 304 to adjust the dredging thickness, ensure the dredging accuracy, reduce the excess water entering the auger, and increase the dredging concentration.

[0057] The water retaining plate hydraulic cylinder 6 is equipped with a travel sensor, which can facilitate the control system to accurately control the dredging thickness. The angle adjustment hydraulic cylinder 2 is equipped with a travel sensor, which is convenient for the control system to accurately control the dredging flatness and depth.

[0058] Specific technical parameters when implementing the present invention:

[0059] Disc-type environmentally friendly reamer dredging thickness at one time: 100~400mm

[0060] Total weight of disc-type environmentally friendly reamer: about 5000~7000kg

[0061] Disc type environmental protection reamer total height: 3365mm

[0062] Disc type environmental protection reamer total width: 2450mm

[0063] Disc type environmental protection reamer total length: 3365mm

[0064] Mud suction port diameter: 450mm

[0065] Main structure material: Q345

[0066] Reamer body 4 dimensions:

[0067] Diameter: 2000mm

[0068] Height: 1000mm

[0069] Number of blades: 12

[0070] Weight: 2000kg

[0071] Angle adjustment hydraulic cylinder 2 quantity: 1 (with stroke sensor)

[0072] Hydraulic cylinder diameter: 140mm

[0073] Hydraulic cylinder rod diameter: 80mm

[0074] Hydraulic cylinder stroke: 735mm

[0075] Water baffle hydraulic cylinder 6 quantity: 4 (2 of which are equipped with stroke sensors)

[0076] Hydraulic cylinder diameter: 100mm

[0077] Hydraulic cylinder rod diameter: 56mm

[0078] Hydraulic cylinder stroke: 409mm

[0079] Angle adjustment hydraulic cylinder 2 and water baffle hydraulic cylinder 6: the plunger speed is 0.05m / s~0.25m / s, and the internal oil pressure of the hydraulic cylinder is 10MPa~20MPa.

[0080] The specific implementation process of the present invention is as follows:

[0081] During construction, the bottom support disc 402 of the disc auger is attached to the dredging surface and pressed into the mud layer to a certain depth by weight, which is the pre-set dredging depth. The central axis of the auger remains perpendicular to the dredging surface.

[0082] The auger hydraulic motor 501 placed in the supporting structure 3 drives the disc auger body 4 to rotate through the auger shaft 502. At the same time, the bridge of the auger suction vessel swings left and right driven by the transverse winch. The mud cut by the auger forms mud and enters the mud suction pipe through the mud suction port and is discharged to the mud treatment site through the mud pump on the ship.

[0083] The angle adjustment hydraulic cylinder 2 installed on the connecting rotating structure 1 and the supporting structure 3 on the dredging vessel bridge can adjust the hydraulic cylinder stroke according to the water depth and dredging depth to ensure that the cutting surface of the bottom support disc 402 is always in contact with the mud surface.

[0084] Two water baffle hydraulic cylinders 6 are arranged between the water baffles 7 and the supporting structure 3 on the left and right sides. The function of the water baffle hydraulic cylinders 6 is that when the reamer swings to one side to dredge, the water baffle hydraulic cylinder 6 on this side controls the water baffle 7 on this side to lift up a certain height, which is the depth required for dredging. The water baffle hydraulic cylinder 6 on the other side pushes the water baffle 7 on this side down to be flush with the bottom of the reamer body 4 to reduce the water from this side Entering the interior of the reamer, the purpose of this is to minimize the entry of excess water into the disc reamer during the dredging process.

[0085] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A disc-type environmental protection dredging cutter, characterized in that: It includes a connecting rotating structure, an angle adjusting hydraulic cylinder, a supporting structure, a reamer body, a reamer hydraulic driving device, a water baffle hydraulic cylinder, and a water baffle; The connecting rotating structure is used to connect the dredging vessel bridge and the supporting structure, and the supporting structure is used to support the reamer hydraulic driving device and the reamer body; the upper part of the connecting rotating structure is hinged to the supporting structure through an angle-adjusting hydraulic cylinder, and the lower part of the connecting rotating structure is hinged to the supporting structure, and the relative angle between the two is adjusted by the extension and contraction of the angle-adjusting hydraulic cylinder plunger, so that the bottom of the reamer body is always in contact with the mud surface; the reamer hydraulic driving device is located inside the supporting structure, and is used to drive the reamer body to rotate; The reamer body is located at the bottom of the support structure, and the bottom of the reamer body is a planar structure; the reamer body is a cylindrical structure, and the upper part of the reamer body is located in the reamer casing at the bottom of the support structure. The reamer body is composed of a reamer blade, a bottom support disc, a hub and a top support ring. The reamer blade is located between the bottom support disc and the top support ring, and the hub is located in the middle of the bottom support disc. The hub is provided with a flange connected to the reamer shaft; The water baffle hydraulic cylinder can be rotatably installed on the supporting structure, the water baffle is located on the periphery of the reamer body, the water baffle is a semi-cylindrical structure, the water baffle is hinged to the water baffle hydraulic cylinder, the water baffle hydraulic cylinder is extended and retracted to drive the water baffle to move up and down to adjust the dredging thickness, and the water baffle hydraulic cylinder and the water baffle are arranged symmetrically relative to the reamer body.

2. The disc-type environmental protection dredging cutter according to claim 1 is characterized in that: The connecting and rotating structure includes a connecting structure body, a bridge connecting flange, a hydraulic cylinder rotating ear plate and a supporting structure connecting ear plate. The connecting structure body is a box-shaped structure. The bridge connecting flange is located on one side of the connecting structure body and is used to connect the bridge of the dredging vessel; the hydraulic cylinder rotating ear plate is located on the upper part of the connecting structure body, and the hydraulic cylinder rotating ear plate is hinged to the cylinder body of the angle adjustment hydraulic cylinder through a pin shaft. The supporting structure connecting ear plates are located on both sides of the lower part of the connecting structure body and are used to connect the supporting structure.

3. The disc-type environmental protection dredging cutter according to claim 1 is characterized in that: The relative rotation angle between the connecting rotation structure and the supporting structure is adjusted between 0° and 45°.

4. The disc-type environmental protection dredging cutter according to claim 1 is characterized in that: The reamer hydraulic drive device is located in the cylinder of the supporting structure, and includes a reamer hydraulic motor and a reamer shaft. The reamer hydraulic motor is connected to one end of the reamer shaft, and the other end of the reamer shaft passes through the circular flat plate at the bottom of the cylinder of the supporting structure and is connected to the hub of the reamer body through a flange.

5. The disc-type environmental protection dredging cutter according to claim 4 is characterized in that: A support bearing, a bearing seat and a reamer shaft seal are installed on the reamer shaft located below the circular flat plate.

6. The disc-type environmental protection dredging cutter according to claim 1 is characterized in that: The supporting structure includes a cylinder, a reamer casing, and a water baffle moving guide rail. An angle hydraulic cylinder ear plate is provided on the upper rear side of the cylinder, and the angle hydraulic cylinder ear plate and the plunger ear ring of the angle adjustment hydraulic cylinder are connected by a pin shaft; a circular flat plate is provided at the root of the cylinder, a reamer casing is provided on the periphery of the circular flat plate, and water baffle moving guide rails are symmetrically installed on the front and rear sides of the reamer casing, and two left and right water baffles are installed between the water baffle moving guide rails. The water baffle hydraulic cylinder is extended and retracted to drive the water baffle to move up and down along the water baffle moving guide rail; a mud suction port is provided on the circular flat plate, and the mud suction port is used to connect an elbow-shaped mud suction pipe to suck in mud and transport it to the bridge frame mud discharge pipe.

7. The disc-type environmental protection dredging cutter according to claim 6 is characterized in that: Support steel pipes are symmetrically arranged on the left and right sides of the middle part of the cylinder body, and the support steel pipes are fixed on the cylinder body; the rear ends of the two support steel pipes on the left and right sides are respectively provided with rotating support ear plates, and the rotating support ear plates are connected to the support structure connecting ear plates connecting the rotating structure through pin shafts; lifting hydraulic cylinder ear plates are respectively arranged on the two support steel pipes on the left and right sides, and the cylinder body of the water baffle hydraulic cylinder is rotatably installed on the corresponding lifting hydraulic cylinder ear plates through pin shafts, and the outer side surface of the water baffle is installed with a hydraulic cylinder connecting ear plate, and the hydraulic cylinder connecting ear plate is hinged to the plunger end of the water baffle hydraulic cylinder through a pin shaft.

8. The disc-type environmental protection dredging cutter according to claim 1 is characterized in that: The water retaining plate is composed of an outer sealing plate, an inner sealing plate, an upper sealing plate and a lower sealing plate. The interior of the water retaining plate is a hollow structure and is provided with reinforcing ribs.

9. The disc-type environmental protection dredging cutter according to claim 1 is characterized in that: The reamer blades are arranged at a certain angle from the bottom supporting disc to the top supporting ring, and are welded to the bottom supporting disc and the top supporting ring as a whole.

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