Underwater mud suction reamer machine for open caisson

Abstract

The utility model discloses an underwater mud suction reamer machine for an open caisson, which relates to the field of open caisson construction equipment and comprises a submersible silt pump and a cutterhead component, the lower end of the submersible silt pump is connected with a waterproof motor and the cutterhead component, and the cutterhead component comprises a cutterhead frame, a steel frame, a steel casing and a high-pressure flushing pipeline. The cutterhead frame comprises a plurality of rotary cutterheads, a plurality of alloy teeth are welded on the rotary cutterheads, the steel frame is mounted on the outer ring of the cutterhead frame, a steel casing is assembled on the outer side of the steel frame, and a high-pressure flushing pipeline is assembled on the outer ring of the steel casing. The cutting tool has better cutting capacity and a stable structure, is convenient to construct, can improve operation efficiency and safety, and has obvious practical value.

Description

Technical Field

[0001] The utility model relates to the field of caisson construction equipment, in particular to an underwater mud suction reamer machine used for caissons. Background Art

[0002] Caisson structure is a kind of building or building foundation at a certain depth underground, which is generally used in the construction of foundation pits of large bridge piers, sewage pumping stations, large equipment foundations, civil air defense shelters, shield assembly wells, underground lanes and station hydraulic foundation construction enclosures. During construction, a shaft-shaped structure is first made on the surface, and then the soil is continuously excavated from the well under the protection of the well wall, so that the caisson gradually sinks under the action of its own weight. After reaching the predetermined design elevation, the bottom is sealed and the internal structure is constructed.

[0003] Silt is a soil layer composed of finer sand and more viscous clay. Silt is mainly formed in the process of sedimentation of water bodies such as rivers, lakes, and oceans. In these geomorphic processes, due to the scouring and migration of water flow, silt particles are dispersed and deposited with water flow. Its characteristic is that there are many gaps between particles, which easily produces quicksand. Quicksand refers to the phenomenon that granular materials in the soil layer flow due to the presence of water. In the quicksand phenomenon, it is usually because the soil layer contains more fine particles (such as silt) and the pore water content of the soil body is high, resulting in reduced cohesion and shear strength of the soil layer. When the shear stress of the soil layer exceeds its shear strength due to external forces or earthquakes, the soil layer will collapse and flow, forming quicksand.

[0004] When the caisson wall encounters a silty sand layer during the process of soil excavation and sinking, the entire caisson structure is at risk of sudden sinking. The undrained sinking method is generally used to ensure that the water level in the well is not lower than the groundwater level outside the well and reduce the phenomenon of quicksand. The conventional excavation method that cooperates with the undrained sinking method is to use an underwater hydraulic grab to take soil or a silt pump to suck mud with the assistance of divers to flush the mud. With the increase in the depth of the caisson section and the influence of the silty sand layer, the construction efficiency of the grab operation is greatly reduced; at the same time, due to the use of undrained sinking, the water in the well is relatively turbid after mixing with silt, which increases the risk factor of the diver's sinking operation. Therefore, the conventional soil excavation process has significant disadvantages and insecurity. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides an underwater mud suction reamer with strong cutting ability and stable structure, which can effectively reduce the influence of quicksand phenomenon on construction efficiency.

[0006] An underwater sludge suction reamer for caissons comprises a submersible sludge pump and a cutter disc assembly, wherein the lower end of the submersible sludge pump is connected to a waterproof motor and a cutter disc assembly, wherein the cutter disc assembly comprises a cutter disc frame, a steel frame, a steel casing and a high-pressure flushing pipeline, wherein the cutter disc frame comprises a plurality of rotating cutter discs, wherein a plurality of alloy teeth are welded to the rotating cutter discs, wherein the steel frame is mounted on the outer ring of the cutter disc frame, a steel casing is mounted on the outer side of the steel frame, and a high-pressure flushing pipeline is mounted on the outer ring of the steel casing.

[0007] Furthermore, a plurality of triangular welding irons are installed at the bottom of the steel casing and connected to the steel frame.

[0008] Furthermore, a lifting eye is provided at the top of the steel casing.

[0009] Furthermore, the high-pressure flushing pipeline includes a water pipe and a flushing head, and the flushing head is connected to the end of the water pipe.

[0010] Furthermore, the water pipe is composed of explosion-proof steel wire and a rubber tube wrapping the explosion-proof steel wire.

[0011] Furthermore, the high-pressure water flushing pipeline is fixed on the outer wall of the steel casing, and the spraying direction of the water flushing head is toward the outside of the cutting area of ​​the cutter head frame.

[0012] Furthermore, the waterproof motor is connected to a hydraulic gear pump, the hydraulic gear pump is connected to a hydraulic motor, and the output end of the hydraulic motor is connected to the cutter head frame.

[0013] Furthermore, the ends of the four supporting legs of the steel frame are all cut at bevel angles.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Compared with the use of a submersible sludge pump alone for underwater sludge suction operations, the underwater sludge suction reamer of the utility model is equipped with a cutterhead assembly, which has a better ability to cut soil. The cutterhead assembly is composed of three sets of rotating cutterheads, each of which is welded with several alloy teeth, which can better cut different types of soil layers, improve cutting effects, and improve work efficiency. The equipment also reduces the disturbance to the original soil and does not change the form of the soil, thereby ensuring the overall stability of the caisson and the surrounding soil, helping to avoid local instability of the soil and reduce the hidden dangers of local construction.

[0016] 2. Compared with the single equipment, this utility model is equipped with a high-pressure flushing pipeline, which can assist in flushing the area on the edge of the caisson where the reamer cannot cut. The high-pressure flushing pipeline replaces the traditional diver-assisted construction, improves the safety of the operation, and makes the construction process more convenient. The flushing pipeline adopts high-strength, high-pressure explosion-proof steel wire wrapped with cloth rubber tube, which can provide a strong flushing effect. The spray direction of the flushing head is toward the outside of the cutting area of ​​the cutter head, ensuring that the water flow can fully flush the cutting area and improve the dredging effect.

[0017] 3. The steel frame is installed on the outer ring of the cutter head frame and connected to the rotating cutter head, and the steel casing is set around the rotating cutter head and connected to it, which can increase the structural stability of the entire equipment. The steel casing is equipped with triangular welding irons on all four sides, which further increases the structural strength and stability of the equipment and improves the anti-extrusion and wear resistance.

[0018] 4. The top of the steel casing is equipped with a lifting eye to facilitate the hanging and operation of the lifting equipment, making the use of the underwater sludge suction reamer safer and more convenient, and can adapt to long-distance underwater operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the main viewing angle of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the utility model from another viewing angle.

[0022] Figure 3 It is a structural schematic diagram of the utility model from another viewing angle.

[0023] Figure 4 It is a structural schematic diagram of the utility model from a side viewing angle.

[0024] Figure 5 This utility model Figure 4 Schematic diagram of the AA section structure.

[0025] Figure 6 This utility model Figure 5 Schematic diagram of the enlarged structure of part A in the middle.

[0026] In the figure: 1. Submersible silt pump; 2. Waterproof motor; 3. Hydraulic gear pump; 4. Hydraulic motor; 5. Cutter head frame; 6. Steel frame; 7. Steel casing; 8. High-pressure flushing pipeline; 9. Lifting eye; 61. Support foot; 71. Triangular welding iron; 81. Water pipe; 82. Flush head. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments described in 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. Embodiment 1

[0028] like Figures 1 to 6 As shown, in order to achieve the above purpose, the utility model provides the following technical solutions: an underwater sludge suction reamer for caisson, comprising a submersible sludge pump 1 and a cutterhead assembly, wherein the submersible sludge pump 1 is connected to a waterproof motor 2 at the lower end, the waterproof motor 2 is connected to a hydraulic gear pump 3, the hydraulic gear pump 3 is further connected to a hydraulic motor 4, and the output end of the hydraulic motor 4 is connected to a cutterhead frame 5, providing the required power and driving force, so that the cutterhead can rotate and cut sludge. The submersible sludge pump 1 is a dry motor down-pump type, the motor adopts an oil chamber sealing method, a mechanical seal is provided inside, and the flow rate is 500m³ / h. The cutterhead assembly comprises a cutterhead frame 5, a steel frame 6 and a steel casing 7, the cutterhead frame 5 is composed of three groups of rotating cutterheads, and 12 alloy teeth are welded on the rotating cutterhead for cutting sludge. The steel frame 6 is installed on the outer ring of the cutterhead frame 5, and the steel casing 7 is assembled on the outer side of the steel frame 6 to provide additional protection. The bottom of the steel casing 7 is connected to the steel frame 6 through a triangular welding iron 71 to ensure the firm structure of the machine. On both sides of the top of the steel casing 7, two φ10 lifting ring ears 9 are reserved to facilitate lifting and operation. The high-pressure flushing pipeline 8 consists of two DN50 water pipes 81 and a flushing head 82, and the flushing head 82 is connected to the end of the water pipe 81. The high-pressure flushing pipeline replaces the traditional diver's diving mud flushing operation. While replenishing water in the well, it also cuts the surrounding soil and assists in mud suction. The water pipe 81 uses a combination of explosion-proof steel wire and rubber tube to ensure safety during the work process. This section of the water pipe 81 is fixed on the outer wall of the steel casing 7, and the spray direction of the flushing head 82 is toward the outside of the cutting area of ​​the cutter head frame 5 to maintain the effectiveness and safety of the work. Finally, the ends of the four supporting feet 61 of the steel frame 6 are all cut at an angle to provide stable support and balance. Through the synergy of these designs and components, the underwater sludge suction reamer has the advantages of high efficiency, speed, safety, convenience and soil stability in caisson sinking operations, replacing traditional grab buckets or manpower and machine solutions, reducing construction risks.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims, rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An underwater dredging reamer for caisson, comprising a submersible dredging pump (1) and a cutter head assembly, characterized in that: The submersible silt pump (1) is connected to a waterproof motor (2) and a cutterhead assembly at the lower end. The cutterhead assembly comprises a cutterhead frame (5), a steel frame (6), a steel casing (7) and a high-pressure flushing pipeline (8). The cutterhead frame (5) comprises a plurality of rotating cutterheads, and a plurality of alloy teeth are welded on the rotating cutterheads. The steel frame (6) is mounted on the outer ring of the cutterhead frame (5). The steel casing (7) is mounted on the outer side of the steel frame (6). The outer ring of the steel casing (7) is mounted with a high-pressure flushing pipeline (8).

2. The underwater sludge suction reamer for caisson according to claim 1, characterized in that: The bottom of the steel casing (7) is equipped with a plurality of triangular welding irons (71) connected to the steel frame (6).

3. The underwater sludge suction reamer for caisson according to claim 1, characterized in that: The top end of the steel casing (7) is provided with a lifting lug (9).

4. The underwater sludge suction reamer for caisson according to claim 1, characterized in that: The high-pressure flushing pipeline (8) comprises a water pipe (81) and a flushing head (82), wherein the flushing head (82) is connected to the end of the water pipe (81).

5. The underwater sludge suction reamer for caisson according to claim 4, characterized in that: The water pipe (81) is formed by an explosion-proof steel wire and a rubber tube wrapping the explosion-proof steel wire.

6. The underwater sludge suction reamer for caisson according to claim 4, characterized in that: The high-pressure water flushing pipeline (8) is fixed on the outer wall of the steel casing (7), and the spraying direction of the water flushing head (82) is toward the outside of the cutting area of ​​the cutter head frame (5).

7. The underwater sludge suction reamer for caisson according to claim 1, characterized in that: The waterproof motor (2) is connected to a hydraulic gear pump (3), the hydraulic gear pump (3) is connected to a hydraulic motor (4), and the output end of the hydraulic motor (4) is connected to the cutter head frame (5).

8. The underwater sludge suction reamer for caisson according to claim 1, characterized in that: The ends of the four supporting legs (61) of the steel frame (6) are all cut at bevel angles.

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