Rake head side punching structure

Abstract

The utility model belongs to the technical field of dredging engineering equipment, and particularly relates to a rake head side punching structure. The device is applied to a rake head and comprises a reducer pipe with a flange and a flushing extension pipe, the reducer pipe with the flange is communicated with a high-pressure flushing pipeline of the rake head, and the flushing extension pipe is used for being communicated with the reducer pipe with the flange. The diameter of the reducer pipe with the flange is gradually reduced from one end of the high-pressure flushing pipe connected with the rake head to one end of the flushing extension pipe, and the flushing extension pipe is used for stirring sludge or sandy soil. The pressure of water flow is increased through the reducer pipe with the flange, so that the high-pressure water flow in the flushing extension pipe has enough pressure to stir sludge or sandy soil, the sludge or sandy soil can be conveniently absorbed through the drag head, and dredging excavation can be conveniently carried out on the bottom of a berth or a gap of a sheet pile.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging engineering equipment, and particularly relates to a side impact structure of a drag head. Background Art

[0002] At present, the working mode of the trailing suction dredger is to dredge while sailing, with a trailing head installed on each side of the ship. When the dredger sails, it drives the trailing head forward, digs the soil underwater, and then sucks the mud into the mud tank along the mud pipe through the suction of the mud pump. When the tank is full, it sails to the mud dumping area for mud dumping.

[0003] However, under the condition that the trailing suction hopper vessel needs to maintain a certain safe distance from the structure such as the dock berth, the drag head cannot dredge and excavate the berth bottom or the gap between the sheet piles. Therefore, it is necessary to design a drag head side impact structure to solve the above problem. Utility Model Content

[0004] In view of the above problems, the utility model provides a side impact structure of a rake head to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a side flushing structure of a rake head, applied to the rake head, comprising a flanged reducer and a flushing extension pipe, the flanged reducer is connected to the high-pressure flushing pipeline of the rake head, the flushing extension pipe is used to communicate with the flanged reducer, the flanged reducer gradually decreases in diameter from one end of the high-pressure flushing pipe connected to the rake head to one end of the flushing extension pipe, and the flushing extension pipe is used to stir silty or sandy soil.

[0006] Furthermore, the drag head side flushing structure also includes a curved pipe, which is arranged to fit the drag head, one end of which is connected to the flanged reducer, and the other end of which is connected to the flushing extension pipe.

[0007] Furthermore, the flushing extension pipe includes a straight pipe and a nozzle, the axial direction of the straight pipe is toward the lateral direction of the rake head, the end of the straight pipe is connected to the curved elbow, and there are multiple nozzles, all of which are arranged on the side of the straight pipe and facing downward, and the multiple nozzles extend along the axial direction of the straight pipe.

[0008] Furthermore, the flushing extension pipe also includes a spout, one end of the straight pipe is used to communicate with the flanged reducer, and the other end is provided with a flange interface, and the spout is used to connect with the flange interface.

[0009] Furthermore, the side flushing structure of the rake head also includes a pipeline support fixing frame, which includes a plurality of fasteners. The plurality of fasteners are distributed in sequence along the axial extension direction of the flanged reducer, the curved elbow and the flushing extension pipe, and are all welded to the rake head.

[0010] Technical effects and advantages of the utility model:

[0011] 1. The water pressure is increased by the flange reducer, so that the high-pressure water flow in the flushing extension pipe has a large enough pressure to stir the silt or sandy soil, so that the silt or sandy soil can be absorbed by the rake head and the dredging and excavation of the berth bottom or the gap between sheet piles can be facilitated.

[0012] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It shows a schematic structural diagram of the side impact structure of the drag head of the embodiment of the utility model;

[0015] Figure 2 A structural schematic diagram showing the side impact structure of the drag head of the embodiment of the utility model from another perspective.

[0016] Figure numerals: 1, rake head; 2, reducer with flange; 3, flushing extension pipe; 31, straight pipe; 32, nozzle; 33, nozzle; 4, curved pipe with arc; 5, fastener. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 and Figure 2 As shown, a side flushing structure of a rake head in an embodiment of the utility model is applied to a rake head 1, and includes a flanged reducer 2 and a flushing extension pipe 3. The flanged reducer 2 is connected to the high-pressure flushing pipeline of the rake head 1, and the flushing extension pipe 3 is used to communicate with the flanged reducer 2. The diameter of the flanged reducer 2 gradually decreases from one end of the high-pressure flushing pipe connected to the rake head 1 to one end of the flushing extension pipe 3, and the flushing extension pipe 3 is used to stir silty or sandy soil.

[0019] In this embodiment, a flanged reducer 2 and a flushing extension pipe 3 are provided on the rake head 1, and the flanged reducer 2 is connected to the high-pressure flushing pipe. Specifically, the diameter of the flanged reducer 2 is reduced from a diameter of 20 to 40 cm to a diameter of 9 to 12 cm, that is, water flows into the flanged reducer from the end with a larger diameter and is discharged from the end with a smaller diameter. Then, the water in the high-pressure flushing pipe flows into the flanged reducer 2, and the water pressure is further enhanced when it is discharged from the flanged reducer 2, thereby enhancing the pressure of the water entering the flushing extension pipe 3.

[0020] Thus, by directing the outlet side of the flushing extension pipe 3 toward the silty or sandy soil and gradually reducing the diameter of the flanged reducer 2, the water flow in the high-pressure flushing pipeline of the drag head 1 first enters the flanged reducer 2 before entering the flushing extension pipe 3. The pressure of the water flow is enhanced by the flanged reducer 2, so that the high-pressure water flow in the flushing extension pipe 3 has a sufficiently large pressure to stir the silty or sandy soil, thereby facilitating the use of the drag head 1 to absorb the silty or sandy soil. At locations where the drag head 1 cannot reach, such as the berth bottom or the sheet pile gap, the flushing extension pipe 3 can be used to dredge and excavate the berth bottom or the sheet pile gap.

[0021] Alternatively, if Figure 1 and Figure 2 As shown, the drag head side flushing structure also includes a curved pipe 4, which is arranged in close contact with the drag head 1, one end of which is connected to the flanged reducer 2, and the other end is connected to the flushing extension pipe 3.

[0022] Specifically, since in the general structure, the high-pressure flushing pipeline is arranged at the upper end of the rake head 1, and the flushing extension pipe 3 is used to stir the silty or sandy soil, the flushing extension pipe 3 is generally arranged at the same height as the rake teeth of the rake head 1, and the rake teeth are generally arranged at the lower end of the rake head 1, the flushing extension pipe 3 is also arranged at the lower end of the rake head 1, which will make it difficult to directly connect the flanged reducer 2 and the flushing extension pipe 3.

[0023] In this embodiment, by providing a curved elbow 4 between the flange reducer 2 and the flushing extension pipe 3, and by providing the curved elbow 4 as a structure including a curved pipe and a straight pipe 31, it is convenient to connect the flange reducer and the flushing extension pipe 3. At the same time, by providing the curved elbow 4 as a structure that fits the drag head 1, the drag head side flushing structure can be integrally fitted with the drag head 1, thereby reducing the overall volume of the drag head 1.

[0024] Alternatively, if Figure 2 As shown, the flushing extension pipe 3 includes a straight pipe 31 and a nozzle 32, the axial direction of the straight pipe 31 is toward the lateral direction of the drag head 1, the end of the straight pipe 31 is connected to the curved curved pipe 4, and a plurality of nozzles 32 are provided, and the plurality of nozzles 32 are all arranged on the side of the straight pipe 31 and facing downward, and the plurality of nozzles 32 extend along the axial direction of the straight pipe 31.

[0025] Specifically, the diameter of the flange extension pipe is 9 to 12 cm, and the outlet diameter of the nozzle 32 is 0.5 to 3 cm.

[0026] In this embodiment, by setting the flushing extension pipe 3 as a straight pipe 31, and directing the axial direction of the straight pipe 31 toward the lateral direction of the rake head 1, and by providing a plurality of nozzles 32 on the straight pipe 31, the plurality of nozzles 32 on the straight pipe 31 are used to stir the silty or sandy soil, and at the same time, the rake head 1 is used to excavate and crush the silty or sandy soil. The straight pipe 31 is provided in the lateral direction of the rake head 1, so that a downward flushing force can be achieved, and the stirring range of the silt or fine sand during construction can be widened, which is used to bring the stirred silt and sand out of the construction area when the water flow conditions are good, thereby improving the construction effect.

[0027] Alternatively, if Figure 2 As shown, the flushing extension pipe 3 also includes a nozzle 33, one end of the straight pipe 31 is used to communicate with the flanged reducer 2, and the other end is provided with a flange interface, and the nozzle 33 is used to connect with the flange interface.

[0028] In this embodiment, a nozzle 33 is provided at the end of the flush extension pipe 3, one end of the straight pipe 31 is connected to the flanged reducer 2, and a flange interface is provided at the other end of the straight pipe 31, so that nozzles 33 of various shapes can be connected.

[0029] Alternatively, if Figure 1 and Figure 2 As shown, the side flushing structure of the drag head also includes a pipeline support fixing frame, and the pipeline support fixing frame includes a plurality of fasteners 5. The plurality of fasteners 5 are distributed in sequence along the axial extension direction of the flanged reducer 2, the curved elbow 4 and the flushing extension pipe 3, and are all welded to the drag head 1.

[0030] In this embodiment, by setting up a pipeline support fixing frame, and setting the pipeline support fixing frame with multiple fasteners 5, the multiple fasteners 5 are distributed in sequence along the axial extension direction of the flanged reducer 2, the curved elbow 4 and the flushing extension pipe 3, and welded to the rake head 1, it is convenient to stably connect the flanged reducer 2, the curved elbow 4 and the flushing extension pipe 3 to the rake head 1, thereby ensuring the effect of the side flushing structure of the rake head.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drag head side impact structure, applied to a drag head (1), characterized in that: It comprises a flanged reducer (2) and a flushing extension pipe (3), wherein the flanged reducer (2) is connected to the high-pressure flushing pipeline of the drag head (1), and the flushing extension pipe (3) is used to communicate with the flanged reducer (2), and the diameter of the flanged reducer (2) gradually decreases from one end of the high-pressure flushing pipe connected to the drag head (1) to one end of the flushing extension pipe (3), and the flushing extension pipe (3) is used to stir silty or sandy soil.

2. The drag head side impact structure according to claim 1, characterized in that: The drag head side flushing structure also includes a curved pipe (4), which is arranged in close contact with the drag head (1), one end of which is connected to the flanged reducer (2), and the other end of which is connected to the flushing extension pipe (3).

3. The drag head side impact structure according to claim 2, characterized in that: The flushing extension pipe (3) comprises a straight pipe (31) and a nozzle (32); the axial direction of the straight pipe (31) faces the lateral direction of the drag head (1); the end of the straight pipe (31) is connected to the curved pipe (4); a plurality of nozzles (32) are provided; the plurality of nozzles (32) are all provided on the side of the straight pipe (31) and face downward, and the plurality of nozzles (32) extend along the axial direction of the straight pipe (31).

4. The drag head side impact structure according to claim 3, characterized in that: The flushing extension pipe (3) also includes a nozzle (33); one end of the straight pipe (31) is used to communicate with the flanged reducer (2); the other end is provided with a flange interface; the nozzle (33) is used to connect with the flange interface.

5. The drag head side impact structure according to claim 4, characterized in that: The drag head side flushing structure also includes a pipeline support fixing frame, and the pipeline support fixing frame includes a plurality of fasteners (5). The plurality of fasteners (5) are distributed in sequence along the axial extension direction of the flange reducer (2), the curved elbow (4) and the flushing extension pipe (3), and are all welded to the drag head (1).

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