Jet assisted device and cutter suction pump

Abstract

The application relates to a jet flow auxiliary device and a cutter suction pump, and relates to the field of caisson excavation. The jet flow auxiliary device comprises a mounting frame, a nozzle assembly, a swing assembly and a cam. The nozzle assembly is movably connected to the mounting frame, the swing assembly is movably connected to the nozzle assembly, and the cam is arranged on one side of the mounting frame and movably cooperates with the swing assembly. The cam is driven to move the swing assembly, and then the nozzle assembly is swung relative to the mounting frame to change the jet flow direction of the nozzle assembly. The cam is rotated to move the swing assembly, and then the nozzle assembly is flexibly swung relative to the mounting frame, so that the jet flow direction can be adjusted according to the actual working condition at any time. In this way, the mud layer around the cutter head can be cut and softened in advance, the mud layer is prevented from being directly adhered to the cutter head like strong glue to cause blockage, the trouble of frequent equipment shutdown and cleaning is reduced, the efficiency and adaptability of caisson excavation are significantly improved, and the device is especially suitable for complex conditions such as clay soil.

Description

Technical Field

[0001] This application relates to the field of caisson excavation, and specifically to a jet-assisted device and a cutter pump. Background Technology

[0002] In the field of caisson excavation, a caisson is a key technology used in the construction of tunnels, underground utility tunnels, or large building foundations. Essentially, it is a cylindrical structure that sinks under its own weight through progressive excavation. In traditional construction, workers mainly rely on long-arm excavators and grab buckets for earthwork excavation. These tools are simple to operate, low in cost, and suitable for shallow or small-scale projects. However, with the increasing demand for underground space development in modern cities, the size and depth of caissons are constantly expanding (often reaching tens of meters). Traditional equipment, due to its limited arm length, insufficient excavation depth, and low efficiency, can no longer meet the requirements of efficient and precise construction, necessitating more advanced mechanized solutions.

[0003] Existing technologies typically utilize high-pressure jet systems for automatic cleaning of the cutterhead. The core problem with these high-pressure jet cleaning systems is that the jet direction is designed to be fixed, allowing only a preset angle to flush and clean the cutterhead. While this design can temporarily remove some clay from the cutterhead surface, it cannot flexibly adjust the direction to pre-cut or soften the mud layer around the cutterhead. For example, in clayey soil, the mud layer adheres directly to the cutterhead like strong glue. Due to the lack of pre-cutting treatment, the cutterhead quickly becomes clogged, forcing frequent shutdowns for cleaning. This not only fails to improve excavation efficiency but also exacerbates the construction schedule. Ultimately, this fixed jet device severely lacks adaptability; it cannot prevent mud adhesion or shorten the overall operation time, becoming a key bottleneck restricting the efficient operation of caisson excavation robots. Utility Model Content

[0004] To solve, or at least partially solve, the above-mentioned technical problems, this application provides a jet assist device, comprising: Mounting rack; The nozzle assembly is movably connected to the mounting bracket; A swing assembly is movably connected to the nozzle assembly; A cam is disposed on one side of the mounting bracket and moves in conjunction with the rocker assembly; When driven, the cam rotates to move the oscillating assembly, which in turn pushes the nozzle assembly to swing relative to the mounting bracket, thereby changing the jet direction of the nozzle assembly.

[0005] Optional, the rocking component includes: The movable arm has one end rotatably connected relative to the mounting bracket, and the other end extends to the cam and is movably engaged with the cam. A multi-link system, with one end rotatably connected to the movable arm and the other end rotatably connected to the nozzle assembly; The movable arm swings under the push of the cam, and pushes the nozzle assembly to swing through the multi-link.

[0006] Optionally, the end of the movable arm is provided with a roller, which rolls in contact with the outer surface of the cam.

[0007] Optionally, the swing component further includes: The reset mechanism has one end fixedly connected to the mounting bracket and the other end connected to the movable arm or the multi-link to reset the swing of the movable arm or the multi-link.

[0008] Optionally, the nozzle assembly includes: A movable block is rotatably connected to the mounting frame via a rotating shaft. One end of the movable block is connected to the multi-link and rotates relative to the mounting frame under the push of the multi-link. The nozzle body is fixedly connected to the movable block.

[0009] Optionally, the number of nozzle assemblies is several, each nozzle assembly is connected to a corresponding oscillating assembly, and each nozzle assembly and each oscillating assembly are arranged at intervals along the circumferential direction of the cam.

[0010] Optionally, the cam is connected to a cutter disc, which extends to connect with the cutter head of the cutter pump. Driven by the cutter head, the cutter disc drives the cam to rotate.

[0011] Optionally, the mounting bracket includes: An annular support is disposed on the outer circumference of the cam; Several support arms, one end of which is fixedly connected to the annular bracket, and the other end is used to connect to the housing of the squeegee pump.

[0012] Optionally, the annular bracket is provided with a clearance hole, and the nozzle assembly is rotatably connected to the clearance hole. Under the push of the swing assembly, the nozzle assembly swings within the clearance hole.

[0013] This application provides a cutter suction pump, comprising: The casing contains a motor. A reamer head is disposed at the end of the housing and connected to the output shaft of the motor; A reamer disc is fixedly connected to the reamer head; A slag discharge port is located on the housing near the cutter head, and is used to adsorb the slurry near the cutter head; As described above, the jet assist device has its mounting bracket installed on the housing, and the nozzle assembly of the jet assist device faces the cutter head or the cutter disc.

[0014] The jetting auxiliary device provided in this application drives the swing assembly to move through the rotation of the cam, which in turn causes the nozzle assembly to swing flexibly relative to the mounting frame, so that the jetting direction can be adjusted at any time according to the actual working conditions. This can not only cut and soften the mud layer around the cutter head in advance, preventing the mud layer from adhering directly to the cutter head like strong glue and causing blockage, but also reduce the trouble of frequent equipment shutdowns for cleaning, significantly improving the efficiency and adaptability of caisson excavation, and is especially suitable for complex conditions such as clayey soil.

[0015] The chuck pump provided in this application also possesses all the advantages described above. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0017] Figure 1 This is a schematic diagram of the jet-assisted device of this application; Figure 2 This is a schematic diagram of the structure of the cutter suction pump of this application; Figure 3 This is a partial cross-sectional schematic diagram of the cutter suction pump of this application; Figure 4 This is a top view of the jet-assisted device of this application; Figure 5 This is a partial structural schematic diagram of the jet-assisted device of this application; Figure 6 This is a schematic diagram of the swaying assembly of the jet-assisted device of this application.

[0018] Explanation of reference numerals in the attached figures: 10. Mounting bracket; 11. Circular bracket; 12. Support arm; 111. Clearance hole; 112. Connecting seat; 20. Nozzle assembly; 21. Moving block; 22. Nozzle body; 211. Rotating shaft; 30. Swing assembly; 31. Movable arm; 32. Multi-link; 33. Roller; 34. Reset mechanism; 321. First link; 322. Second link; 323. Third link; 40. Cam; 50. Housing; 60. Cutter head; 70. Cutter disc; 80. Motor; 90. Slag discharge port; 91. Slag discharge channel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0022] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0023] Example 1 This embodiment provides a jet auxiliary device, which is installed on a cutter pump and is used to clean the cutter head of the cutter pump.

[0024] like Figure 1 As shown, the jet auxiliary device includes a mounting bracket 10, a nozzle assembly 20, a swing assembly 30, and a cam 40. The mounting bracket 10 is used to fix the jet auxiliary device to the squeegee pump, and the nozzle assembly 20 and the swing assembly 30 are respectively mounted on the mounting bracket 10. The nozzle assembly 20 is movably connected to the mounting bracket 10, and the swing assembly 30 is movably connected to the nozzle assembly 20; the cam 40 is disposed on one side of the mounting bracket 10 and movably cooperates with the swing assembly 30.

[0025] In this embodiment, the cam 40 is connected to a drive mechanism. When the cam 40 is driven, it rotates on its own. The rotating cam 40 periodically pushes the swing assembly 30 to move through its protruding surface. When the swing assembly 30 moves, it pushes the nozzle assembly 20 to swing relative to the mounting bracket 10. The swing of the nozzle assembly 20 changes the jet direction of the nozzle assembly 20, thereby cleaning the cutter area of ​​the cutter pump.

[0026] In this embodiment, the rotation of the cam 40 drives the movement of the oscillating assembly 30, which in turn causes the nozzle assembly 20 to swing flexibly relative to the mounting bracket 10, allowing the jet direction to be adjusted at any time according to the actual working conditions. This not only cuts and softens the mud layer around the cutter head in advance, preventing the mud layer from adhering directly to the cutter head like strong glue and causing blockage, but also reduces the trouble of frequent equipment shutdowns for cleaning, significantly improving the efficiency and adaptability of caisson excavation, and is especially suitable for complex conditions such as clayey soil.

[0027] In this embodiment, the drive mechanism connecting the cam 40 can be an independent motor system. The cam 40 operates independently through the motor system, driving the nozzle assembly 20 to swing.

[0028] In some embodiments, the cam 40 can be linked with the cutter head 60 of the cutter pump. The cutting motion of the cutter head 60 itself drives the cam 40 to rotate, which can achieve the same effect as above, thereby eliminating the need for a motor system and simplifying the size and cost of the equipment.

[0029] like Figure 2 and Figure 3 As shown, cam 40 is connected to the cutter disc 70 of the cutter pump, and the cutter disc 70 extends to connect with the cutter head 60 of the cutter pump. Driven by the cutter head 60, the cutter disc 70 drives cam 40 to rotate.

[0030] This embodiment utilizes a linkage design between the cutter head 60 and the cam 40. The dynamic rotation of the cutter head 60 drives the cam 40 to rotate, which in turn moves the oscillating assembly 30, thereby driving the nozzle assembly 20 to oscillate synchronously. The oscillating operation of the nozzle assembly 20 cleans the sludge in the areas of the cutter head 60 and the cutter disc 70, while simultaneously pre-cutting the soil to be excavated. Through the combined action of mechanical excavation and fluid cutting, the excavation efficiency under complex working conditions is improved.

[0031] like Figures 1 to 3 As shown, the mounting frame 10 in this embodiment includes an annular bracket 11 and a plurality of support arms 12. The plurality of support arms 12 are arranged around the annular bracket 11, and the two together form a frame structure to ensure the structural stability of the mounting frame 10.

[0032] The support arm 12 is fixed to the housing 50 of the scissor pump by bolts, and the annular bracket 11 is set on the outer circumference of the cam 40. The cam 40 inside the annular bracket 11 is connected and fixed to the auger disc 70 to achieve synchronous rotation, so that the rotational motion of the auger head 60 is directly transmitted to the cam 40. The installation height of the cam 40 is flush with the center height of the rocker assembly 30, so that the cam 40 and the rocker assembly 30 fit tightly together to ensure transmission accuracy.

[0033] Please see Figure 1 and Figure 4 In this embodiment, the cam 40 has a ring structure. The outer circle of the cam 40 is not a standard circle, but a convex shape with a certain curvature in some areas, that is, the curvature of the outer circle of the cam 40 is gradual. The cam 40 rotates with the auger disc 70, and the outer circle of the cam 40 forms a periodic oscillation. The outer circle of the cam 40 periodically pushes the oscillating component 30, thereby causing the oscillating component 30 to oscillate back and forth periodically, so as to perform a back-and-forth pushing operation on the nozzle assembly 20.

[0034] like Figure 1 As shown, the swing assembly 30 is mounted on the annular bracket 11. The nozzle assembly 20 is rotatably connected to the swing assembly 30 and the annular bracket 11, allowing the nozzle assembly 20 to swing freely.

[0035] Preferably, there are several nozzle assemblies 20, each nozzle assembly 20 is connected to a corresponding oscillating assembly 30, and the nozzle assemblies 20 and oscillating assemblies 30 are arranged at intervals along the circumference of the cam 40. Multiple sets of nozzle assemblies 20 are arrayed along the entire circumference to achieve circumferential jet coverage. Multiple sets of oscillating assemblies 30 work in conjunction with the nozzle assemblies 20 to ensure that the high-pressure jet covers a 360-degree circumference of the cutter head 60, cleaning the cutter head's sludge and simultaneously pre-cutting the soil to be excavated, thus improving excavation efficiency under complex working conditions.

[0036] like Figure 4 and Figure 5 As shown, in one embodiment, the swing assembly 30 includes a movable arm 31 and a multi-link 32. One end of the movable arm 31 is rotatably connected relative to the mounting bracket 10, and the other end extends to and movably engages with the cam 40. One end of the multi-link 32 is rotatably connected to the movable arm 31, and the other end is rotatably connected to the nozzle assembly 20. The movable arm 31 swings under the push of the cam 40, and pushes the nozzle assembly 20 to swing via the multi-link 32.

[0037] Specifically, such as Figure 4As shown, a connecting seat 112 is provided on the upper surface of the ring bracket 11. One end of the movable arm 31 is rotatably connected to the connecting seat 112, and the other end can abut against the outer circle contour of the cam 40. The cam 40 can push the movable arm 31 to swing by rotating.

[0038] Preferably, such as Figures 4 to 6 As shown, a roller 33 is provided at the end of the movable arm 31, and the roller 33 rolls in contact with the outer contour of the cam 40. In this embodiment, the close contact between the roller 33 and the outer contour of the cam 40 ensures transmission accuracy.

[0039] Furthermore, such as Figure 6 As shown, the multi-link 32 in this embodiment includes a first link 321, a second link 322, and a third link 323. The first link 321 is rotatably connected to the movable arm 31, the second link 322 is rotatably connected to the first link 321, the third link 323 is rotatably connected to the second link 322, and the third link 323 is rotatably connected to the nozzle assembly 20. The swinging of the movable arm 31 sequentially drives the first link 321, the second link 322, and the third link 323 to move, thereby driving the nozzle assembly 20 to move.

[0040] In this embodiment, the rotation axis of the pivot or hinge connecting the first link 321, the second link 322 and the third link 323 can be at an angle. This can overcome the limitation of force transmission when the movable arm 31 and the nozzle assembly 20 are not on the same plane or in the same direction. Through the flexible rotation between the first link 321, the second link 322 and the third link 323, the rotational pushing and pulling force of the movable arm 31 can be effectively transmitted to the nozzle assembly 20.

[0041] like Figure 4 As shown, the swing assembly 30 of this embodiment has a reset mechanism 34. Preferably, the reset mechanism 34 can be a spring, tension spring, or elastic rope or other elastic element. One end of the reset mechanism 34 is fixedly connected to the mounting bracket 10, and the other end is connected to the movable arm 31 or the multi-link 32 to reset the swing of the movable arm 31 or the multi-link 32.

[0042] Specifically, one end of the reset mechanism 34 is mounted on the connecting seat 112, and the other end is connected to the multi-link 32. When the convex surface of the cam 40 applies a directional induction to the movable arm 31, the spring is compressed and stores force. As the convex surface of the cam 40 leaves the movable arm 31, the spring releases pressure and pushes the multi-link 32, thereby resetting the movable arm 31 and the nozzle assembly 20, thus realizing the reciprocating swing of the nozzle assembly 20.

[0043] like Figure 6As shown, in one embodiment, the nozzle assembly 20 includes a movable block 21 and a nozzle body 22. The movable block 21 is rotatably connected to the mounting frame 10 via a rotating shaft 211. One end of the movable block 21 is connected to a multi-link 32 and rotates relative to the mounting frame 10 under the push of the multi-link 32.

[0044] Preferably, please refer to Figures 4 to 6 The ring bracket 11 is provided with multiple clearance holes 111. The movable block 21 is rotatably connected to the clearance hole 111 through the rotating shaft 211. Under the push of the swing assembly 30, the movable block 21 swings in the clearance hole 111.

[0045] The nozzle body 22 is fixedly connected to the movable block 21, and changes the jet direction as the movable block 21 swings, thus achieving jet operation in different directions. Preferably, the nozzle body 22 can be detachably connected to the movable block 21 for easy maintenance and replacement.

[0046] In this embodiment, when the reamer head 60 rotates, it drives the cam 40 to rotate. The cam 40 has a continuous diameter change in the circumferential direction. When rotating, the diameter of the contact area with the roller 33 changes dynamically, causing the roller 33 to generate a periodic radial displacement, which in turn drives the connected movable arm 31 to swing. The swing of the movable arm 31 is transmitted step by step through the multi-link 32, and finally drives the nozzle assembly 20 to swing back and forth.

[0047] This structure transforms the continuous rotation of the cutter head 60 into the periodic reciprocating oscillation of the nozzle assembly 20. The high-speed jet ejected from the nozzle body 22 oscillates along the tangent of the nozzle mounting base circle. Multiple sets of nozzle assemblies 20 are arranged in an array along the entire circumferential direction to achieve circumferential jet coverage.

[0048] During operation, the cutter head 60 rotates continuously to cut the soil, while the jet auxiliary device is responsible for cleaning the cutter teeth and assisting in cutting and washing the soil. The two work together to improve the cutting efficiency of the soil.

[0049] As needed, the outer contour of the cam 40 can be adjusted to arrange two or more continuous arcs within a 360-degree range. Each arc corresponds to a drive stroke, which can drive the nozzle assembly 20 to perform two or more swinging actions while the cutter head 60 rotates one revolution.

[0050] The angle of the nozzle assembly 20 is set according to the arrangement of the cutter head 60 and the cutter disc 70, so that the jet can cut the soil on the outer surface of the blade teeth. During the lateral movement of the cutter, the jet pre-cuts and washes the soil, reducing the difficulty for the cutter head 60 to cut the soil. At the same time, it can clean the clay on the outside of the cutter head 60, keeping the cutter head 60 sharp.

[0051] Example 2 This embodiment provides a squeegee pump, such as Figure 2 and Figure 3 As shown, the cutter pump includes a housing 50, inside which a motor 80 is housed; a cutter head 60 is located at the end of the housing 50, and the cutter head 60 is connected to the output shaft of the motor 80. A cutter disc 70 is fixedly connected to the cutter head 60.

[0052] A slag discharge port 90 is provided on the shell 50 near the cutter head 60. The slag discharge port 90 is connected to the slag discharge channel 91 inside the shell 50. The slag discharge port 90 and the slag discharge channel 91 are used to adsorb the slurry near the cutter head 60.

[0053] The squeegee pump of this embodiment is equipped with the jet auxiliary device mentioned in the above embodiment. The mounting bracket 10 of the jet auxiliary device is installed on the housing 50. The cutter disc 70 is fixedly connected to the cam 40, so that the cutter head 60 and the cam 40 are linked together. The nozzle assembly 20 of the jet auxiliary device faces the cutter head 60 or the cutter disc 70.

[0054] This embodiment utilizes the linkage design between the cutter head 60 and the cam 40, employing the dynamic rotation of the auger suction power to drive the swing assembly 30, which precisely transmits the rotational motion to the nozzle assembly 20, causing the nozzle assembly 20 to swing synchronously. Multiple swing assemblies 30 and nozzle assemblies 20 work together to ensure that the high-pressure jet covers the 360-degree circumference of the cutter head, clearing the sludge from the cutter disc and simultaneously pre-cutting the soil to be excavated. Through the combined action of mechanical excavation and fluid cutting, the excavation efficiency under complex working conditions is improved.

[0055] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A jet-assisted device, characterized in that, include: Mounting bracket (10); The nozzle assembly (20) is movably connected to the mounting bracket (10). A swing assembly (30) is movably connected to the nozzle assembly (20); A cam (40) is disposed on one side of the mounting bracket (10) and is movably engaged with the rocker assembly (30); When driven, the cam (40) rotates to push the oscillating assembly (30) to move, and when the oscillating assembly (30) moves, it pushes the nozzle assembly (20) to swing relative to the mounting bracket (10) to change the jet direction of the nozzle assembly (20).

2. The jet-assisted device according to claim 1, characterized in that, The swing assembly (30) includes: The movable arm (31) has one end rotatably connected relative to the mounting bracket (10), and the other end extends to the cam (40) and is movably engaged with the cam (40); A multi-link (32) is rotatably connected at one end to the movable arm (31) and at the other end to the nozzle assembly (20). The movable arm (31) swings under the push of the cam (40) and pushes the nozzle assembly (20) to swing through the multi-link (32).

3. The jet-assisted device according to claim 2, characterized in that, The end of the movable arm (31) is provided with a roller (33), which rolls in contact with the outer surface of the cam (40).

4. The jet-assisted device according to claim 2, characterized in that, The swing assembly (30) also includes: The reset mechanism (34) is fixedly connected at one end to the mounting bracket (10) and at the other end to the movable arm (31) or the multi-link (32) to reset the swing of the movable arm (31) or the multi-link (32).

5. The jet-assisted device according to claim 2, characterized in that, The nozzle assembly (20) includes: The movable block (21) is rotatably connected to the mounting frame (10) via a rotating shaft (211). One end of the movable block (21) is connected to the multi-link (32) and rotates relative to the mounting frame (10) under the push of the multi-link (32). The nozzle body (22) is fixedly connected to the movable block (21).

6. The jet-assisted device according to claim 1, characterized in that, The number of nozzle assemblies (20) is several, and each nozzle assembly (20) is connected to a corresponding swing assembly (30). Each nozzle assembly (20) and each swing assembly (30) are arranged at intervals along the circumferential direction of the cam (40).

7. The jet-assisted device according to any one of claims 1 to 6, characterized in that, The cam (40) is connected to a cutter disc (70), which extends to connect with the cutter head (60) of the cutter pump. Driven by the cutter head (60), the cutter disc (70) drives the cam (40) to rotate.

8. The jet-assisted device according to any one of claims 1 to 6, characterized in that, The mounting bracket (10) includes: An annular support (11) is disposed on the outer circumference of the cam (40); Several support arms (12) are provided, one end of which is fixedly connected to the annular bracket (11), and the other end is used to connect to the housing (50) of the squeegee pump.

9. The jet-assisted device according to claim 8, characterized in that, The annular bracket (11) is provided with a clearance hole (111), and the nozzle assembly (20) is rotatably connected to the clearance hole (111). Under the push of the swing assembly (30), the nozzle assembly (20) swings within the clearance hole (111).

10. A cutter suction pump, characterized in that, include: The housing (50) has a motor (80) installed inside. A reamer head (60) is disposed at the end of the housing (50) and connected to the output shaft of the motor (80); A cutter disc (70) is fixedly connected to the cutter head (60); The slag discharge port (90) is located on the housing (50) near the cutter head (60) and is used to adsorb the slurry near the cutter head (60); The jet assist device as claimed in any one of claims 1 to 9, wherein the mounting bracket (10) of the jet assist device is mounted on the housing (50), and the nozzle assembly (20) of the jet assist device faces the cutter head (60) or the cutter disc (70).

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