A twist jetting trenching device

Abstract

The application discloses a twist and spray trenching device, which comprises a deep trenching assembly, the deep trenching assembly comprises a reamer part, the reamer part comprises a plurality of circular reamers, each circular reamer comprises a reamer shaft, a rib, a blade surface and a blade edge; the slurry conveying assembly is arranged at the rear side of the reamer part and a surface trenching part, and the surface trenching part is arranged at the rear side of the slurry conveying assembly. Since the deep trenching assembly is arranged, the deep trenching assembly comprises the surface trenching part, that is, the deep trenching and the surface trenching functions are simultaneously realized, so that the operation is simpler, and the work efficiency is improved to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of cable laying equipment technology, specifically to a trenching device using a screw sprayer. Background Technology

[0002] In existing cable laying equipment, the functions of breaking ground, deep trench excavation, surface trench excavation, and sludge pumping are performed by different equipment, which need to be operated independently, making the entire cable laying operation relatively complex and the work efficiency relatively low. Summary of the Invention

[0003] The present invention aims to solve at least one of the problems in the prior art.

[0004] The purpose of this invention is to provide a grouting and trenching device.

[0005] According to an embodiment of the present invention, a cutter jetting trenching device includes: a deep trench excavation assembly comprising: a cutter section comprising a plurality of circular cutters, each circular cutter comprising: a cutter shaft; ribs disposed circumferentially on the cutter shaft and radially arranged; a blade surface disposed on the side of the rib away from the cutter shaft; and a cutting edge disposed on the blade surface; a slurry conveying assembly disposed on the rear side of the cutter section, the slurry conveying assembly comprising: a first support plate extending along the length of the excavation body; a drive wheel rotatably connected to the first support plate; a tensioning wheel also rotatably connected to the first support plate; a chain adapted to the drive wheel and the tensioning wheel; and a surface trench excavation section disposed on the rear side of the slurry conveying assembly.

[0006] Because it is equipped with a deep trench excavation component, which includes a surface trench excavation section, it has both deep trench and surface trench excavation functions, making operation simpler and improving work efficiency to a certain extent.

[0007] According to one embodiment of the present invention, the surface trench excavation section includes: a slurry suction pipe, the suction port of which is disposed on the front side of the slurry conveying assembly; a high-pressure water passage disposed on the lower side of the slurry suction pipe; and a pipe shaft connected to the excavation device, one end of which is rotatably connected to the pipe shaft.

[0008] According to one embodiment of the present invention, two first support plates are provided, and a mud and water conveying channel is formed between the two first support plates. A row of cutting teeth is provided on the lower side of each of the two first support plates.

[0009] According to one embodiment of the present invention, a suction rake head is provided on the front side of the mud and water conveying assembly. The suction rake head includes a rake head shaft disposed on the inner wall of the suction rake head; a first high-pressure nozzle disposed on the lower side of the inner wall of the suction rake head; and a movable wall slidably disposed on the inner wall of the suction rake head, wherein the movable wall is also provided with a connecting pipe port.

[0010] According to one embodiment of the present invention, the cutter jet ditching device further includes a soil suction assembly, the soil suction assembly comprising: a second support plate extending along the length of the excavation body; a first suction pipe section disposed on the upper side of the second support plate; a second suction pipe section, one end of which is connected to one end of the first suction pipe section; a third suction pipe section, one end of which is connected to the other end of the second suction pipe section; and a soil separator, the other end of which is connected to the inlet of the soil separator.

[0011] According to one embodiment of the present invention, a pipe section support frame is provided on the lower side of the second support plate, and the pipe section support frame is connected to the second support plate; a pipe section clamping block is provided on the upper side of the second support plate, and the pipe section clamping block is clamped onto the first suction pipe section.

[0012] According to one embodiment of the present invention, a cable laying assembly is provided on the lower side of the soil suction assembly. The cable laying assembly is connected to the excavation body. The cable laying assembly includes a cable laying pipe that extends along the length direction of the excavation body; a pressure plate that is disposed on one side of the cable laying pipe; and a linear chute in which the pressure plate is slidably disposed.

[0013] According to one embodiment of the present invention, the cable laying assembly further includes an emergency cable abandonment switch, which is disposed on the excavation body. Attached Figure Description

[0014] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

[0015] Figure 1a This is a schematic diagram of the first three-dimensional structure according to an embodiment of the present invention;

[0016] Figure 1b This is a schematic diagram of the second three-dimensional structure according to an embodiment of the present invention;

[0017] Figure 2a This is a schematic diagram of the third three-dimensional structure according to an embodiment of the present invention;

[0018] Figure 2b This is a schematic diagram of the fourth three-dimensional structure according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the connection structure between the first support plate and the first suction tube segment in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the pipe section support frame in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the pipe section clamping block in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the reamer section in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the suction rake head in an embodiment of the present invention;

[0024] Figure 8a This is a schematic diagram of the first structure of the soil separator in an embodiment of the present invention;

[0025] Figure 8b This is a schematic diagram of the second structure of the soil separator in an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the cable laying assembly in an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the movable frame in an embodiment of the present invention.

[0028] In the picture:

[0029] 100 - Trenched body;

[0030] 110-Circular reamer, 111-Reamer shaft, 112-Rib, 113-Cutting face, 114-Cutting edge;

[0031] 120 - Suction rake head, 121 - Rake head shaft, 122 - First high-pressure nozzle, 123 - Connecting pipe port;

[0032] 130-Slurry conveying assembly, 131-First support plate, 132-Drive wheel, 1321-Driven wheel, 133-Tension wheel, 134-Chain, 135-Cutter teeth, 136-Second high-pressure nozzle;

[0033] 140-Mud and water suction assembly, 141-Second support plate, 142-First suction pipe section, 1421-Pipe section support frame, 1422-Pipe section clamping block, 143-Second suction pipe section, 144-Third suction pipe section, 145-Mud and water separator, 1451-Inlet, 1452-Soil outlet, 1453-Clear water outlet;

[0034] 150 - Surface trench excavation section; 151 - Slurry suction pipe; 1511 - Suction port; 152 - High-pressure water channel; 153 - Pipe shaft.

[0035] 160-Cable laying assembly, 161-Cable laying pipe, 162-Pressure plate, 163-Linear chute, 164-Emergency cable abandonment switch, 1641-Pipe opening shaft;

[0036] 170 - Hydraulic assembly, 171 - First hydraulic rod, 172 - Second hydraulic rod, 173 - Third hydraulic rod. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0038] As shown in Figures 1 to 10, the cutter jetting trenching device includes a deep trench excavation assembly, which includes: a reamer section, which includes a plurality of circular reamers 110, preferably three reamers. Each circular reamer 110 includes: a reamer shaft 111, a rib 112, a cutting surface 113, and a cutting edge 114. The rib 112 is arranged circumferentially around the reamer shaft 111 and is radially arranged; preferably, three ribs are arranged. The cutting surface 113 is located on the side of the rib 112 away from the reamer shaft 111; the cutting edge 114 is located on the cutting surface. A slurry conveying assembly 130 is located behind the reamer section and includes: a first support plate 131, a drive wheel 132, a tensioning wheel 133, and a chain 134. The first support plate 131 extends along the length of the excavation body 100; the drive wheel 132 is rotatably connected to the first support plate; the tension wheel 133 is also rotatably connected to the first support plate; the chain 134 is adapted to the drive wheel 132 and the tension wheel 133; and the surface trench excavation section 150 is located on the rear side of the slurry conveying assembly. Preferably, the chain is also provided with a plurality of driven wheels 1321.

[0039] Because it is equipped with a deep trench excavation component, which includes a surface trench excavation section, it has both deep trench and surface trench excavation functions, making operation simpler and improving work efficiency to a certain extent.

[0040] Furthermore, the surface trench excavation section 150 includes: a slurry suction pipe 151, a high-pressure water passage 152, and a pipe shaft 153. The suction port 1511 of the slurry suction pipe 151 is located on the side of the slurry conveying assembly; the high-pressure water passage 152 is located on the lower side of the slurry suction pipe; the pipe shaft 153 is connected to the excavation device, and one end of the slurry suction pipe is rotatably connected to the pipe shaft.

[0041] With the above settings, trench excavation within 3 meters of the surface layer can be achieved. Specifically, high-pressure water jet is used to spray the soil through high-pressure water channel 152, and then the soil is sucked through the suction port 1511 of mud and water suction pipe 151.

[0042] Furthermore, two first support plates 131 are provided, forming a mud and water conveying channel between the two first support plates 131. A row of blades 135 is provided on the lower side of each of the two first support plates, and a plurality of second high-pressure nozzles 136 are provided between the two rows of blades 135.

[0043] As shown above, the soil is first broken by the reamer section, and then by a row of cutting teeth, which makes the soil breakage more thorough and facilitates the subsequent surface trench excavation work.

[0044] Furthermore, the front side of the mud and water conveying assembly is provided with a suction rake head 120, a rake head shaft 121, a first high-pressure nozzle 122, and a movable wall. The suction rake head 120 includes a rake head shaft 121, which is disposed on the inner wall of the suction rake head; the first high-pressure nozzle 122 is disposed on the lower side of the inner wall of the suction rake head; the movable wall is slidably disposed on the inner wall of the suction rake head 120, and a connecting pipe port 123 is also provided on the movable wall.

[0045] With the above setup, it is possible to excavate cable trenches up to 8 meters deep below the seabed mud surface. In the specific excavation process, layered excavation is carried out. The excavation of the top 3 meters of the trench is achieved through the surface trench excavation unit; the excavation of the deep trench is achieved through the cutter head and mud and water conveying assembly.

[0046] Furthermore, the cutter jet ditching device also includes a soil suction assembly 140, which comprises: a second support plate 141, a first suction pipe section 142, a second suction pipe section 143, a third suction pipe section 144, and a soil separator 145. The second support plate extends along the length of the excavation body 100; the first suction pipe section 142 is disposed on the upper side of the second support plate; one end of the second suction pipe section 143 is connected to one end of the first suction pipe section; one end of the third suction pipe section 144 is connected to the other end of the second suction pipe section; and the other end of the third suction pipe section 144 is connected to the inlet 1451 of the soil separator 145. Soil is input from the inlet, separated by centrifugal force, and output from the soil outlet 1452, while clean water is output from the clean water outlet 1453.

[0047] Furthermore, a pipe section support frame 1421 is provided on the lower side of the second support plate 141. The pipe section support frame is connected to the second support plate and is used to support the first suction pipe section. A pipe section clamping block 1422 is provided on the upper side of the second support plate and is clamped onto the first suction pipe section.

[0048] Furthermore, a cable laying assembly 160 is provided on the lower side of the soil suction assembly 140. The cable laying assembly 160 is connected to the excavation body 100. The cable laying assembly includes a cable laying pipe 161, a pressure plate 162, and a linear chute 1163. The cable laying pipe 161 extends along the length of the excavation body 100; the pressure plate 162 is disposed on one side of the cable laying pipe; and the pressure plate is slidably disposed in the linear chute 1163.

[0049] Furthermore, the cable laying assembly also includes an emergency cable abandonment switch 164, which is mounted on the excavation body and is rotated to abandon the cable via a pipe-opening shaft 1641.

[0050] As set up above, the side of the cable laying pipe 161 can be opened. By activating the emergency cable abandonment switch 164, the side guard plate can be opened, thereby enabling lateral cable abandonment in an emergency and separating the trenching device from the submarine cable.

[0051] The mud fragments, which are jet-cut and broken, are sucked away by the suction rake head 120, and then transported to the mud-water separator 145 through the first suction pipe section 142, the second suction pipe section 143 and the third suction pipe section 143. The mud-water mixture sucked out is filtered out by the mud-water separator, and then the mud is used on the cable laying assembly for filling the cables in the trench.

[0052] During trenching, cable laying is achieved through a cable laying assembly. The cable laying pipe can rotate around a pivot on one side, thereby smoothly burying the cable in the trench. Simultaneously, the pressure plate 162 can slide horizontally along the linear chute 163 to adjust its length. The suction rake head 120 can rotate around the rake head pivot 121, thereby achieving different angles between the suction rake head and the horizontal plane. The first high-pressure nozzle 122 on the lower inner wall of the suction rake head 120 is used to reduce the horizontal resistance during the cutting process of the suction rake head. The rotation of the suction rake head can be achieved through a hydraulic assembly 170, which includes a first hydraulic rod 171, a second hydraulic rod 172, and a third hydraulic rod 173. The first hydraulic rod is used to control and adjust the mud and water suction assembly, the second hydraulic rod is used to control and adjust the cable laying assembly, and the third hydraulic rod is used to control and adjust the suction rake head.

[0053] During the deep soil cutting and crushing process, a high-pressure jet method was adopted in conjunction with the reamer section and the surface trench excavation section. A row of cutter teeth 114 is connected to the chain, and the chain is driven to rotate by a hydraulic motor. The chain is driven by a high-speed, low-torque hydraulic motor and a reducer. The hydraulic power comes from the hydraulic power source of the trenching device. The hydraulic motor is small in size, has a high power-to-weight ratio, and is highly stable and reliable. It also has its own motor braking performance, so there is no need to add an additional motor brake.

[0054] The hydraulic power of this cutter jet trenching device is provided by a hydraulic power source on a movable frame. The high-pressure hydraulic oil in the hydraulic power source is transmitted through hydraulic oil pipelines, and the high-pressure oil is transmitted to the hydraulic actuator (hydraulic components, hydraulic motor, etc.) by opening and closing the oil valve. The high-pressure water jet method used in this invention is achieved by a high-pressure water pump and a high-pressure water storage device in the movable frame.

[0055] This multi-functional cutter jetting trenching equipment is suspended on the frame of an underwater trenching machine and moves with the trenching machine to achieve efficient cutting of hard soil on the seabed. It can cut and break hard clay within the range of 200 kPa.

[0056] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A screwjet trenching device, characterized in that: The cutter jet dredging device includes a deep trench excavation component, which comprises: The reamer section includes a plurality of circular reamers, each of the circular reamers including: a reamer shaft; ribs arranged circumferentially on the reamer shaft and arranged radially; a cutting face disposed on the side of the rib away from the reamer shaft; and a cutting edge disposed on the cutting face. A slurry conveying assembly, disposed on the rear side of the cutter head, comprises: a first support plate extending along the length of the excavation body; a drive wheel rotatably connected to the first support plate; a tension wheel also rotatably connected to the first support plate; a chain adapted to the drive wheel and the tension wheel; and The surface trench excavation section is located on the rear side of the slurry conveying assembly.

2. The screwjet trenching device according to claim 1, characterized in that: The surface trench excavation section includes: A mud and water suction pipe, wherein the suction port of the mud and water suction pipe is located on the front side of the mud and water conveying assembly; A high-pressure water circuit, wherein the high-pressure water circuit is located below the mud and water suction pipe; and A pipe shaft is connected to the excavation device, and one end of the mud and water suction pipe is rotatably connected to the pipe shaft.

3. The screwjet trenching device according to claim 2, characterized in that: Two first support plates are provided, forming a mud and water conveying channel between the two first support plates, and a row of cutting teeth is provided on the lower side of each of the two first support plates.

4. The screwjet trenching device according to claim 3, characterized in that: The front side of the mud and water conveying assembly is provided with a suction rake head, which includes a rake head shaft disposed on the inner wall of the suction rake head; a first high-pressure nozzle disposed on the lower side of the inner wall of the suction rake head; and a movable wall slidably disposed on the inner wall of the suction rake head, and the movable wall is also provided with a connecting pipe port.

5. The screwjet trenching device according to any one of claims 1-4, characterized in that: The cutter jet ditching device further includes a soil suction assembly, which includes: a second support plate extending along the length of the excavation body; a first suction pipe section disposed on the upper side of the second support plate; a second suction pipe section, one end of which is connected to one end of the first suction pipe section; a third suction pipe section, one end of which is connected to the other end of the second suction pipe section; and a soil separator, the other end of which is connected to the inlet of the soil separator.

6. The screwjet trenching device according to claim 5, characterized in that: A pipe section support frame is provided on the lower side of the second support plate, and the pipe section support frame is connected to the second support plate; a pipe section clamping block is provided on the upper side of the second support plate, and the pipe section clamping block is clamped onto the first suction pipe section.

7. The screwjet trenching device according to claim 5, characterized in that: A cable laying assembly is provided on the lower side of the soil suction assembly. The cable laying assembly is connected to the excavation body. The cable laying assembly includes a cable laying pipe that extends along the length of the excavation body; a pressure plate that is disposed on one side of the cable laying pipe; and a linear chute in which the pressure plate is slidably disposed.

8. The screwjet trenching device according to claim 7, characterized in that: The cable laying assembly also includes an emergency cable abandonment switch, which is installed on the excavation body.

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