A method for manufacturing a mud pump suction device

Abstract

This invention relates to a method for manufacturing a mud hopper extraction device, comprising the following steps: Step 1, fabrication of the extraction channel structure; Step 2, positioning of the hinge point structure; Step 3, control of the flatness of the opening at the hinge point structure; Step 4, fabrication of the segmented extraction door structure; Step 5, machining of the extraction door connecting shaft hole; Step 6, installation of the extraction door; Step 7, installation of the drive mechanism and chain. This invention reduces the arrangement of extraction mud pipes, eliminating the need for pre-embedding of extraction mud pipes in the hopper, thus reducing the workload of construction in confined spaces and effectively reducing labor intensity. Moreover, the inclined setting of the extraction door of the extraction device effectively ensures smooth mud discharge within the mud hopper. During the installation process, the extraction door is first hoisted into the extraction channel in segments. Utilizing the existing boss structure within the extraction channel, the inclination angle of each extraction door segment is adjusted using wooden blocks. Then, the welding of the extraction door and subsequent hoisting operations are completed, effectively ensuring the final installation accuracy of the extraction door.

Description

Technical Field

[0001] This invention relates to the field of mud hull manufacturing technology for dredgers, and more particularly to a method for manufacturing a mud hull pumping device. Background Technology

[0002] The mud and sand in the mud hopper of the dredger can be discharged through two methods: mud gate discharge and hopper extraction. The hopper extraction operation is carried out by the mud pump in the pump room. The suction end of the mud pump is connected to the hopper extraction channel in the mud hopper through two hopper extraction branch pipes. The hopper extraction channel is equipped with a hydraulic control gate valve, which can be controlled on the control panel in the wheelhouse.

[0003] The mud removal channel, serving as the primary channel for transporting mud and sand within the mud tank, typically comprises hydraulic gate valves, mud removal pipes, mud pumps, and mud discharge pipes. The mud removal pipes and hydraulic gate valves are located inside the mud tank walls, extending through the watertight walls to suction mud and sand. The mud tank is divided into multiple sections along the ship's length, with the mud removal pipes distributed along these sections to each mud tank. The opening and closing of the hydraulic gate valves within each mud tank section controls the mud discharge operation for that section. Due to the smooth inner surface of the mud tank, the complex shape and dense structure of the mud tank walls, and the complex construction process of arranging the mud removal pipes and hydraulic gate valves within this space, construction is extremely difficult.

[0004] Therefore, the present invention proposes a method for manufacturing a mud tank pumping device to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for manufacturing a mud chamber pumping device, which simplifies the process, reduces the amount of construction work in confined spaces, and effectively reduces the difficulty of construction.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a method for manufacturing a mud tank evacuation device, the innovation of which is that: the evacuation device includes an evacuation channel, an evacuation door, and a drive mechanism. The top of the evacuation channel has a mud inlet. The evacuation door is located inside the evacuation channel and covers the mud inlet. One side of the evacuation door is hinged to the evacuation channel via a hinge point structure. The evacuation door tilts downwards from the hinged side towards the center of the mud tank. A lug is provided at the top of the evacuation door. The drive mechanism is located above the mud tank and connected to the lug via a chain to control the opening and closing of the evacuation door. The method for manufacturing the evacuation device includes the following steps:

[0007] Step 1: Construction of the extraction channel structure: Build a tooling frame on the bottom surface with pre-embedded iron, check the height of the tooling frame, assemble and weld the structural components that have been assembled in groups on the tooling frame to form the extraction channel.

[0008] Step 2, Locating the hinge structure: After the extraction channel is welded, the hinge structure is positioned on the extraction channel;

[0009] Step 3: Control the flatness of the opening at the hinge point structure, make tooling for the hatch door panel, fix the panel at the opening of the hinge point structure, weld the structural components near the opening of the hinge point structure, and complete the opening of the hinge point structure.

[0010] Step 4: Fabrication of the hatch panel segment structure: Fabricate a horizontal jig, securely fix the hatch panel to the horizontal jig, and then weld the internal structure of the door panel until completion.

[0011] Step 5: Machining the shaft holes for the hatch door connection: After the hatch door plate is welded, machine the shaft holes for the hatch door connection hinge structure.

[0012] Step 6: Install the hatch door;

[0013] Step 6.1: Set up a segmented jig in advance in the extraction channel, and hoist each extraction door segment into the extraction channel. One side of each extraction door segment is set on the side wall protrusion of the extraction channel, and the other side is set on the segmented jig.

[0014] Step 6.2: Adjust the position of each hatch section and adjust the tilt angle of each hatch section by placing wooden blocks between the boss and the hatch section.

[0015] Step 6.3: Weld the various hatch sections together as a whole, and weld the lugs to the top surface of the hatch.

[0016] Step 6.4: Vertically lift the entire hatch door to the installation location, adjust the gap between the hatch door and the hinge structure opening, use tooling plates to fix the hatch door, and weld the hatch door connecting hinge structure.

[0017] Step 7: Install the drive mechanism and chain.

[0018] Furthermore, the driving mechanism is a hydraulic cylinder, and a mud door is provided on one side of the mud chamber bottom extraction channel. The mud door is controlled to open and close by a mud door cylinder. The mud door cylinder and the hydraulic cylinder are mounted on the top of the mud chamber via a base.

[0019] The mud gate cylinder is connected to the mud gate via a pull rod to control its opening and closing. A bushing is movably fitted on the outside of the pull rod, and the bushing is fixedly installed on the base. The mud gate cylinder is installed on the top of the bushing. The telescopic end of the mud gate cylinder extends into the bushing and connects to the top of the pull rod, while the bottom of the pull rod connects to the mud gate.

[0020] The hydraulic cylinder is mounted on the outer wall of the bushing via a triangular connecting plate. The hydraulic cylinder is hinged to the triangular connecting plate. The telescopic end of the hydraulic cylinder is connected to a connecting rod assembly. The bottom end of the connecting rod assembly is connected to a chain. The bottom end of the chain is connected to an ear plate. A guide sleeve is movably fitted on the outer side of the connecting rod assembly. The guide sleeve is fixedly mounted on the base.

[0021] Furthermore, the connecting rod assembly is composed of several rods connected end to end in sequence, with adjacent rods hinged together, and a guide sleeve fitted on the outside of the topmost rod.

[0022] Furthermore, the height deviation of the tooling fixture is controlled within 1mm.

[0023] The advantages of this invention are:

[0024] The manufacturing method of the mud chamber extraction device of the present invention reduces the arrangement of extraction mud pipes, which previously required pre-embedding in the chamber, thus reducing the amount of construction work in confined spaces and effectively reducing labor intensity. Moreover, the inclined setting of the extraction door of the extraction device effectively ensures smooth mud discharge in the mud chamber. During the installation process, the extraction door is first hoisted into the extraction channel in sections. Utilizing the existing boss structure in the extraction channel, the inclination angle of each extraction door section is adjusted by using wooden blocks. Then, the welding of the extraction door and subsequent hoisting operations are completed, effectively ensuring the final installation accuracy of the extraction door.

[0025] In this invention, the mud gate cylinder and the hydraulic cylinder are mounted on the top of the mud chamber via the same base, which facilitates on-site layout and subsequent use and maintenance.

[0026] In this invention, the hydraulic cylinder is hinged to the triangular connecting plate, making it easier to correct the position of the hydraulic cylinder and the connecting rod assembly during installation.

[0027] In this invention, the connecting rods of the linkage assembly are hinged together and cooperate with the chain to achieve a long-distance flexible connection between the hydraulic cylinder and the hatch, which has sufficient strength, is not easy to break, and has a long service life. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a schematic diagram of the mud tank extraction device in this invention.

[0030] Figure 2 This is a schematic diagram of the welding of the hatch door lug plate of the present invention.

[0031] Figure 3 This is a schematic diagram of the installation of the hatch door of the present invention. Detailed Implementation

[0032] The following embodiments are intended to enable those skilled in the art to more fully understand the present invention, but do not limit the invention to the scope of the embodiments described.

[0033] This invention provides a method for manufacturing a mud tank evacuation device. The evacuation device includes an evacuation channel 1, an evacuation door 2, and a drive mechanism. The top of the evacuation channel 1 has a mud inlet. The evacuation door 2 is located inside the evacuation channel 1 and covers the mud inlet. One side of the evacuation door 2 is hinged to the evacuation channel 1 via a hinge structure. The hinge structure includes a support and a pin. The support is installed on the inner wall of the evacuation channel 1 and has a through hole for the pin to pass through. The evacuation door 2 has a shaft hole for the pin to pass through. The pin passes through the through hole and the shaft hole in sequence to achieve the hinge connection between the evacuation door 2 and the evacuation channel 1. To ensure smooth mud discharge in the mud tank, the evacuation door 2 is tilted downwards from the hinge side towards the middle of the mud tank. The top of the evacuation door 2 is provided with an ear plate 14. The drive mechanism is located above the mud tank and is connected to the ear plate 14 via a chain 3 to control the opening and closing of the evacuation door 2.

[0034] The driving mechanism is a hydraulic cylinder 7. A mud door 10 is provided on one side of the mud extraction channel 1 at the bottom of the mud tank. The mud door 10 is controlled to open and close by a mud door cylinder. The mud door cylinder and the hydraulic cylinder 7 are installed on the top of the mud tank through a base, which is convenient for on-site layout and later use and maintenance. The mud door cylinder is connected to the mud door 10 through a pull rod 9 to control its opening and closing. A bushing 8 is movably fitted on the outside of the pull rod 9. The bushing 8 is fixedly installed on the base. The mud door cylinder is installed on the top of the bushing 8 through a flange. The telescopic end of the mud door cylinder extends into the bushing 8 and connects to the top of the pull rod 9. The bottom of the pull rod 9 is connected to the mud door 10. The hydraulic cylinder 7 is installed on the outer wall of the bushing 8 through a triangular connecting plate 6. The hydraulic cylinder 7 is hinged to the triangular connecting plate 6. The telescopic end of the hydraulic cylinder 7 is connected to a connecting rod assembly 4. The bottom end of the connecting rod assembly 4 is connected to a chain 3. The bottom end of the chain 3 is connected to an ear plate 14. A guide sleeve 5 is movably fitted on the outside of the connecting rod assembly 4. The guide sleeve 5 is fixedly installed on the base. The hydraulic cylinder 7 is hinged to the triangular connecting plate 6, making it easier to align the hydraulic cylinder 7 with the connecting rod assembly 4 during installation. The connecting rod assembly 4 is composed of several support rods connected end to end in sequence, with adjacent support rods hinged together. The guide sleeve 5 is fitted onto the outside of the top support rod. The support rods of the connecting rod assembly are hinged together and cooperate with the chain to achieve a long-distance flexible connection between the hydraulic cylinder and the hatch door. This connection has sufficient strength, is not easy to break, and has a long service life.

[0035] The manufacturing method of the above-mentioned extraction device includes the following steps:

[0036] Step 1, Construction of the extraction channel structure: Build a tooling jig on the bottom surface with pre-embedded iron, check the height of the tooling jig, and control the height deviation of the tooling jig within 1mm. Assemble and weld the structural components that have been assembled in groups on the tooling jig to form the extraction channel.

[0037] Step 2, Locating the hinge structure: After the extraction channel is welded, the hinge structure is positioned on the extraction channel;

[0038] Step 3: Control of the flatness of the opening at the hinge point structure. To ensure the flatness of the opening at the hinge point structure, a tooling hatch panel is made, the panel is fixed at the opening of the hinge point structure, and structural components near the opening of the hinge point structure are welded to complete the opening of the hinge point structure.

[0039] Step 4: Fabrication of the hatch panel segment structure: Fabricate a horizontal jig, securely fix the hatch panel to the horizontal jig, and then weld the internal structure of the door panel until completion.

[0040] Step 5: Machining the shaft holes for the hatch door connection: After the hatch door plate is welded, machine the shaft holes for the hatch door connection hinge structure.

[0041] Step 6: Install the hatch door;

[0042] Step 6.1: Set up a segmented jig in advance in the extraction channel, and hoist each extraction door segment into the extraction channel. One side of each extraction door segment is set on the protrusion on the side wall of the extraction channel, and the other side is set on the segmented jig. Before each extraction door segment is dropped into the extraction channel, the extraction door segment needs to be flipped so that the extraction door panel faces upward, so as to maintain the flatness of the surface of the extraction door facing the mud tank.

[0043] Step 6.2: Adjust the position of each hatch section and adjust the tilt angle of each hatch section by placing wooden blocks between the boss and the hatch section.

[0044] Step 6.3: Weld the various hatch sections together as a whole, and weld the lugs to the top surface of the hatch.

[0045] Step 6.4: Vertically lift the entire hatch door to the installation location, adjust the gap between the hatch door and the hinge structure opening, use tooling plates to fix the hatch door, and weld the hatch door connecting hinge structure.

[0046] Step 7: Install the drive mechanism and chain.

[0047] The manufacturing method of the mud chamber extraction device provided by this invention reduces the arrangement of extraction mud pipes, which previously required pre-embedding in the chamber. This reduces the workload of construction in confined spaces and effectively lowers labor intensity. Furthermore, the inclined design of the extraction door of the extraction device effectively ensures smooth mud discharge from the mud chamber. During the installation process, the extraction door is first hoisted into the extraction channel in sections. Utilizing the existing boss structure within the extraction channel, the inclination angle of each extraction door section is adjusted using wooden blocks. Then, the welding of the extraction door and subsequent hoisting operations are completed, effectively ensuring the final installation accuracy of the extraction door.

[0048] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a mud tank pumping device, characterized in that: The mud tank evacuation device includes an evacuation channel, an evacuation door, and a drive mechanism. The evacuation channel has a mud inlet at its top. The evacuation door is located inside the evacuation channel and covers the mud inlet. One side of the evacuation door is hinged to the evacuation channel via a hinge point structure. The evacuation door slopes downwards from the hinged side towards the center of the mud tank. A lug is provided at the top of the evacuation door. The drive mechanism is located above the mud tank and connected to the lug via a chain to control the opening and closing of the evacuation door. The manufacturing method of the mud tank evacuation device includes the following steps: Step 1: Construction of the extraction channel structure: Build a tooling frame on the bottom surface with pre-embedded iron, check the height of the tooling frame, assemble and weld the structural components that have been assembled in groups on the tooling frame to form the extraction channel. Step 2, Locating the hinge structure: After the extraction channel is welded, the hinge structure is positioned on the extraction channel; Step 3: Control the flatness of the opening at the hinge point structure, make tooling for the hatch door panel, fix the panel at the opening of the hinge point structure, weld the structural components near the opening of the hinge point structure, and complete the opening of the hinge point structure. Step 4: Fabrication of the hatch panel segment structure: Fabricate a horizontal jig, securely fix the hatch panel to the horizontal jig, and then weld the internal structure of the door panel until completion. Step 5: Machining the shaft holes for the hatch door connection: After the hatch door plate is welded, machine the shaft holes for the hatch door connection hinge structure. Step 6: Install the hatch. Step 6.1: Set up a segmented jig in advance in the extraction channel, and hoist each extraction door segment into the extraction channel. One side of each extraction door segment is set on the side wall protrusion of the extraction channel, and the other side is set on the segmented jig. Step 6.2: Adjust the position of each hatch section and adjust the tilt angle of each hatch section by placing wooden blocks between the boss and the hatch section. Step 6.3: Weld the various hatch sections together as a whole, and weld the lugs to the top surface of the hatch. Step 6.4: Vertically lift the entire hatch door to the installation location, adjust the gap between the hatch door and the hinge structure opening, use tooling plates to fix the hatch door, and weld the hatch door connecting hinge structure. Step 7: Install the drive mechanism and chain.

2. The method for manufacturing the mud tank pumping device according to claim 1, characterized in that: The driving mechanism is a hydraulic cylinder. A mud door is provided on one side of the mud chamber bottom extraction channel. The mud door is controlled to open and close by a mud door cylinder. The mud door cylinder and the hydraulic cylinder are mounted on the top of the mud chamber via a base. The mud gate cylinder is connected to the mud gate via a pull rod to control its opening and closing. A bushing is movably fitted on the outside of the pull rod, and the bushing is fixedly installed on the base. The mud gate cylinder is installed on the top of the bushing. The telescopic end of the mud gate cylinder extends into the bushing and connects to the top of the pull rod, while the bottom of the pull rod connects to the mud gate. The hydraulic cylinder is mounted on the outer wall of the bushing via a triangular connecting plate. The hydraulic cylinder is hinged to the triangular connecting plate. The telescopic end of the hydraulic cylinder is connected to a connecting rod assembly. The bottom end of the connecting rod assembly is connected to a chain. The bottom end of the chain is connected to an ear plate. A guide sleeve is movably fitted on the outer side of the connecting rod assembly. The guide sleeve is fixedly mounted on the base.

3. The method for manufacturing the mud tank pumping device according to claim 2, characterized in that: The linkage assembly is composed of several rods connected end to end in sequence, with adjacent rods hinged together, and a guide sleeve fitted on the outside of the topmost rod.

4. The method for manufacturing the mud tank pumping device according to claim 1, characterized in that: The height deviation of the tooling frame is controlled within 1mm.

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