Auxiliary negative pressure sinking equipment and construction method for suction-type structural foundation

Abstract

The present application discloses an auxiliary negative pressure sinking device and construction method for a suction-type structural foundation, the device includes: an installation clamp, an extension device, an air compressor pipeline and a telescopic tube. The construction method includes: adjusting the length of the telescopic tube; installing the installation clamp; adjusting the extension device for temporary locking; hoisting the suction-type structural foundation into the water to sink by its own weight, and then sinking under negative pressure; when sinking to the design elevation, suspending the negative pressure to pump water outward; opening the exhaust valve, injecting high-pressure air into the pile to level the mud surface; removing the installation clamp and recycling the equipment. The negative pressure sinking auxiliary equipment of the present application can be used to perform real-time measurement when the suction-type structural foundation sinks to the design elevation or when the mud surface inside the pile is uneven, and to level the mud surface inside the pile, so as to facilitate the sinking of the structure and the subsequent backfill construction, improve the construction efficiency, and avoid the situation where the soil plug inside the pile body sometimes rises, resulting in the inability to sink to the design elevation or the uneven mud surface inside the pile affects the subsequent backfill construction.

Description

Technical Field

[0001] The present application belongs to the technical field of suction-type structural foundation sinking installation, and specifically relates to an auxiliary negative pressure sinking device and construction method for a suction-type structural foundation. Background Art

[0002] Suction-type foundations are a new type of structure currently being widely used in marine engineering. Examples include suction jacket foundations in deep-sea offshore wind farms and suction anchors in new floating structures. The construction process for suction-type foundations involves component prefabrication – component transportation – positioning and hoisting – self-weight sinking – vacuum sinking – elevation measurement – and equipment recovery. Suction-type foundations hold great potential for application in deep-sea offshore wind farm development. However, due to their unique construction process, soil heave can sometimes occur within the pile during sinking, preventing it from reaching the designed elevation or hindering subsequent backfilling due to uneven soil surfaces within the pile. Currently, this problem is often addressed by increasing the designed length of the pile. While extensive research has been conducted domestically and internationally on the morphology and height of soil heave, the factors influencing pile heave height are complex and diverse, including soil properties, the suction force from vacuum sinking, and the ratio of pile diameter to wall thickness. Consequently, there are no authoritative specifications or research theories to guide engineering design. How can we use newly developed equipment to level the raised mud surface inside the piles and measure the elevation during the structural sinking process? On the one hand, how can we level the mud surface inside the piles during the structural sinking process to fill the blind spots in current research and design and facilitate construction? On the other hand, how can we collect monitoring data during construction to provide more reference value for future structural design? Therefore, the development of a suction-assisted negative pressure sinking device and construction method for structural foundations that can solve the above technical problems is a technical problem that needs to be solved urgently. Summary of the Invention

[0003] In view of the shortcomings or deficiencies of the above-mentioned prior art, the technical problem to be solved by the present application is to provide a suction-type structural foundation auxiliary negative pressure sinking equipment and construction method.

[0004] To solve the above technical problems, this application is implemented through the following technical solutions:

[0005] This application proposes a suction-type structure foundation auxiliary negative pressure sinking device, comprising:

[0006] An installation clamp on which an exhaust valve is mounted;

[0007] a stretching device disposed through the mounting clamp;

[0008] An air compressor pipeline is arranged through the installation clamp, and the end of the air compressor pipeline is rotatably connected to a telescopic tube, and the telescopic tube is also movably connected to the stretching device.

[0009] Optionally, in the above-mentioned auxiliary negative pressure sinking equipment for suction-type structural foundation, both ends of the mounting clamp are connected to the spare opening on the pile top of the suction-type structural foundation through a hydraulic device and a hinged manner respectively.

[0010] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment, the mounting clamp is a U-shaped groove structure, and a sensor is also provided on the mounting clamp.

[0011] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking device, the stretching device includes: a handle spindle, a spindle tube, an adjustment button, a spring and a clamp,

[0012] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking device, the handle spindle is installed in the spindle tube, the adjustment button is installed at the end of the handle spindle, the spring is sleeved on the handle spindle and arranged close to the adjustment button, and the chuck is rotatably installed at the other end of the handle spindle;

[0013] When the adjustment button is pressed, the spring is compressed and the handle main shaft moves downward and deflects, so that the chuck moves around the handle main shaft and retracts into the main shaft tube;

[0014] When the height is adjusted to the desired level, the adjusting button is released to open the telescopic tube.

[0015] Optionally, in the above-mentioned suction-type structure foundation auxiliary negative pressure sinking device, the extending device further comprises: an electromagnetic relay and a latch hole, the electromagnetic relay being mounted on the upper surface of the upper plate, a latch being slidably disposed on the upper surface of the upper plate, the latch being matched with the latch hole;

[0016] The electromagnetic relay controls the sliding direction of the latch based on magnetic force, and enables the latch to be inserted into or withdrawn from the latch hole;

[0017] When the clamp is locked, the electromagnetic relay applies an attractive force; when the construction is completed, the electromagnetic relay applies a reverse magnetic force, and the latch is pulled out in the reverse direction to release the lock. Under the elastic force of the spring, the telescopic tube returns to a vertical state.

[0018] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment, the stretching device further includes: a first laser rangefinder installed at the end of the handle main shaft.

[0019] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment, the stretching device further includes: a second laser rangefinder installed on the main shaft of the handle.

[0020] Optionally, the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment, wherein the extension device also includes: an upper rod and a lower rod, one end of the telescopic tube is movably connected to the upper rod and the lower rod, the upper rod is also movably connected to the rod sleeve, and the lower rod is also movably connected to the handle main shaft.

[0021] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment, the telescopic tube includes: a telescopic rod and a tube head arranged at the end of the telescopic rod, and the tube head is a flat structure.

[0022] Optionally, in the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment, the telescopic tube is rotatably connected to the air pressure pipeline through a corrugated hose.

[0023] Optionally, the above-mentioned suction-type structural foundation auxiliary negative pressure sinking equipment further includes: a fixed bracket, the vertical rod in the fixed bracket is connected to the telescopic tube through a rod sleeve, wherein the upper end of the fixed bracket is fixed to the lower surface of the plate, and the lower end of the fixed bracket is rotatably connected to one end of the telescopic tube.

[0024] This application proposes a construction method for a suction-type structural foundation auxiliary negative pressure sinking device, the construction method comprising:

[0025] Adjust the length of the telescopic tube;

[0026] Install the above-mentioned mounting clamps;

[0027] Adjust the extension device to temporarily lock it;

[0028] Open the exhaust valve, and the suction-type structural foundation is hoisted into the water and sinks under its own weight;

[0029] Close the exhaust valve, unlock the suction structure foundation and sink under negative pressure;

[0030] When the soil sinks to the design elevation or the soil plug uplift is detected to be higher than the expansion pipe elevation, the negative pressure pumping is stopped;

[0031] Open the exhaust valve and inject high-pressure air into the pile to level the mud surface;

[0032] If the elevation involved is not reached, repeat the above steps;

[0033] Remove the mounting clamps and recycle the equipment.

[0034] Optionally, in the above-mentioned construction method, the temporary locking of the above-mentioned adjustment and extension device includes: pressing the adjustment button and lifting the handle spindle upwards, and when the clamping head is stuck on the upper surface of the plate, starting the electromagnetic relay to lock it.

[0035] Optionally, the above construction method, before removing the installation clamp, further includes: starting the electromagnetic relay in reverse and closing the telescopic tube.

[0036] Compared with the existing technology, this application has the following technical effects:

[0037] The auxiliary negative pressure sinking equipment in this application can be used to perform real-time measurement when the suction-type structure foundation sinks to the design elevation or when the mud surface inside the pile is uneven, and to level the mud surface inside the pile, thereby facilitating the sinking of the structure and subsequent backfill construction, improving construction efficiency, and avoiding the situation where the soil inside the pile rises, resulting in the inability to sink to the design elevation or the uneven mud surface inside the pile, which affects the subsequent backfill construction operations.

[0038] This application can be installed simultaneously on the deck and the negative pressure sinking construction equipment, realizing remote operation of the deck and land installation. After launching, the work and recovery can be automated, saving labor costs.

[0039] In this application, some operating circuits are led to the deck for remote operation to realize intelligent construction and information management. The lines can be led to the deck through the handle spindle pipe, and another pipeline channel can also be opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0041] Figure 1 : A three-dimensional diagram of a suction-type structural foundation auxiliary negative pressure sinking device according to an embodiment of the present application;

[0042] Figure 2 : A front view of a suction-type structure foundation auxiliary negative pressure sinking device according to an embodiment of the present application;

[0043] Figure 3 : A side view of a suction-type structure foundation auxiliary negative pressure sinking device according to an embodiment of the present application;

[0044] Figure 4 : A schematic structural diagram of a stretching device in one embodiment of the present application;

[0045] Figure 5 : An application scenario diagram of an embodiment of the present application for a suction-type structural foundation auxiliary negative pressure sinking device. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] like Figures 1 to 3 As shown, in one embodiment of the present application, an auxiliary negative pressure sinking device for a suction-type structural foundation, the auxiliary negative pressure sinking device N includes:

[0048] Install the clamp 1, on which the exhaust valve 2 is installed;

[0049] a stretching device 3, which is arranged through the mounting clamp 1;

[0050] The compressed air pipeline 5 is arranged through the mounting clamp 1 , and the end of the compressed air pipeline 5 is rotatably connected to a telescopic tube 9 , and the telescopic tube 9 is also movably connected to the stretching device 3 .

[0051] The auxiliary negative pressure sinking equipment of this embodiment can be used to perform real-time measurement when the suction-type structural foundation M sinks to the design elevation or when the mud surface inside the pile is uneven, and to level the mud surface inside the pile, thereby facilitating the sinking of the structure and subsequent backfill construction, improving construction efficiency, and avoiding the situation where the pile body is unable to sink to the design elevation due to the bulging of soil plugs inside the pile or the uneven mud surface inside the pile, which affects the subsequent backfill construction work.

[0052] The exhaust valve 2 is an automatic switching valve. When the suction-type structural foundation M sinks under negative pressure, the exhaust valve 2 is closed. When high-pressure air is injected into the pile through the air compressor pipeline 5, the exhaust valve 2 is opened to avoid uneven internal and external pressure.

[0053] In this embodiment, the two ends of the mounting clamp 1 are respectively connected to the pile top spare opening M1 of the suction-type structural foundation M via a hydraulic device 4 and an articulated connection. Further preferably, the mounting clamp 1 is aligned and fixed to the top of the pile top spare opening M1 of the suction-type structural foundation M via the hydraulic device 4, and can be automatically unlocked and recovered by deck operation after construction is completed.

[0054] Furthermore, in this embodiment, the mounting clamp 1 is a U-shaped groove structure, and a sensor is also provided on the mounting clamp 1. With the above arrangement, deck installation can be realized, and after the underwater construction is completed, the deck can be automatically released by remote control to realize equipment recovery.

[0055] In this embodiment, if Figure 4As shown, the stretching device 3 includes: a handle spindle 33, a spindle tube 35, an adjustment button 31, a spring 32 and a clamp 34.

[0056] The handle spindle 33 is installed in the spindle tube 35, the adjustment button 31 is installed at the end of the handle spindle 33, the spring 32 is sleeved on the handle spindle 33 and arranged close to the adjustment button 31, and the clamp 34 is rotatably installed on the other end of the handle spindle 33;

[0057] When the adjustment button 31 is pressed, the spring 32 is compressed and the handle main shaft 33 moves downward and deflects, so that the clamping head 34 moves around the handle main shaft 33 and retracts into the main shaft tube 35;

[0058] When the height is adjusted to the desired level, the adjusting button 31 is released to open the telescopic tube 9 .

[0059] Optionally, in this embodiment, the telescopic tube 9 includes a telescopic rod and a tube head provided at the end of the telescopic rod. The telescopic tube 9 can be set to different telescopic lengths according to different application scenarios.

[0060] The telescopic tube 9 is rotatably connected to the air compressor line 5 via a corrugated hose 10. The corrugated hose 10 can realize the rotation of the lower pipe head, one end of which is connected to the upper rigid air compressor line 5 and the other end is connected to a rigid telescopic rod.

[0061] Further optionally, the pipe head is a flat structure, and when high-pressure air is ejected through the pipe head, an air curtain can be formed to impact the raised mud surface to achieve the effect of leveling the mud surface.

[0062] In this embodiment, the telescopic tube 9 can adjust its expansion radius according to the diameter of the pile, is rigidly sleeved, and extends in one direction. At the same time, the air outlet is flat. The pipe head can also be designed according to the actual project so that the air outlet forms an air curtain, which is more conducive to leveling the mud surface.

[0063] Among them, in this embodiment, during installation, the telescopic tube 9 is first folded up and placed into the suction structure foundation M through the spare opening M1 on the pile top, and then the adjustment button 31 of the upper extension device 3 is pressed and the handle main shaft 33 is pulled to extend the tube head.

[0064] The stretching device 3 further includes: an electromagnetic relay and a latch hole, wherein the electromagnetic relay is mounted on the upper surface of the upper plate, and a latch is slidably provided on the upper surface of the upper plate, wherein the latch matches the latch hole;

[0065] The electromagnetic relay controls the sliding direction of the latch based on magnetic force, and enables the latch to be inserted into or withdrawn from the latch hole. When the clamp head 34 is clamped on the upper surface of the plate, the electromagnetic relay is turned on, attracting the clamp head 34 to increase the locking force, and the latch is locked.

[0066] When the clamping head 34 is locked, the electromagnetic relay applies an attractive force; when the construction is completed, the electromagnetic relay applies a reverse magnetic force, pulls out the latch in the reverse direction to release the lock, and under the elastic force of the spring 32, the telescopic tube 9 returns to a vertical state, realizing smooth recovery of the equipment.

[0067] The stretching device 3 further comprises a first laser rangefinder 8 mounted on the end of the handle main shaft 33. The first laser rangefinder 8 may be equipped with a light or the like.

[0068] The stretching device 3 further includes: a second laser rangefinder 7 mounted on the handle spindle 33, wherein the second laser rangefinder 7 can be configured with a photographic scanning function, etc.

[0069] By setting up the first laser rangefinder 8 and the second laser rangefinder 7, the mud surface data inside the pile can be monitored and collected in real time, and the shape of the mud surface inside the pile can be inferred through relevant data. If it has photography, scanning, lighting and other functions, it can realize the data collection of the shape of the mud surface inside the pile, so as to establish a research model in the later stage.

[0070] In this embodiment, if Figures 1 to 3 As shown, the air compressor pipeline 5 is preferably three symmetrically distributed in one direction (the number of pipelines can be increased according to the actual project, or it can be evenly and symmetrically arranged along the circumferential direction), and the upper part is connected to a high-power air compressor. During construction, high-pressure air is injected into the pile to impact the mud surface, thereby achieving the effect of leveling the mud surface inside the pile.

[0071] The stretching device 3 also includes: an upper rod 13 and a lower rod 14. One end of the telescopic tube 9 is movably connected to the upper rod 13 and the lower rod 14. The upper rod 13 is also movably connected to the rod sleeve, and the lower rod 14 is also movably connected to the handle main shaft 33.

[0072] This embodiment also includes: a fixed bracket 11, wherein the vertical rod in the fixed bracket 11 is connected to the telescopic tube 9 via a rod sleeve, wherein the upper end of the fixed bracket 11 is fixed to the lower surface of the plate, and the lower end of the fixed bracket 11 is rotatably connected to one end of the telescopic tube 9.

[0073] The fixing bracket 11 is transversely fixed by welding round steel bars to form a steel cage, and the outer shape can be changed according to the stress characteristics to protect the internal rods.

[0074] In this embodiment, the height of the extended equipment H=the spare pipe opening height H1+the reserved backfill height H2 of the pile top-the length H3 of the telescopic pipe 9+the margin H4.

[0075] like Figure 5 As shown, this embodiment primarily utilizes a spare port M1 at the top of the suction-type structural foundation M for installation and construction. Upon completion, the shell is automatically unlocked and recovered via deck operations. M represents the suction-type structural foundation, M1 represents the spare port, M2 represents the suction pump port, and N represents the auxiliary negative pressure sinking equipment. The suction pump port M2 is used to install a suction pump, providing for the installation and construction of a specialized negative pressure sinking device.

[0076] This embodiment proposes a construction method for a suction-type structural foundation M-assisted negative pressure sinking device, the construction method comprising:

[0077] Step 1: Adjust the length of the telescopic tube 9.

[0078] Specifically, the construction workers adjust the length of the telescopic tube 9 according to the distance from the installation spare pipe mouth to the suction pump interface, place the device into the suction pile through the spare pipe mouth on the top of the suction pile, and center and level it so that the end of the telescopic tube 9 points to the suction pump interface.

[0079] Step 2: Install the above-mentioned mounting clamp 1.

[0080] Specifically, the hydraulic device 4 is started, the device and the spare pipe port are fixed, and the working status of the air compressor pipeline 5, the laser rangefinder and other lines are tested.

[0081] Step three: adjust the stretching device 3 to temporarily lock it.

[0082] Specifically, the adjustment button 31 is pressed and the handle spindle 33 is lifted upwards. When the clamping head 34 is clamped on the upper surface of the plate, the electromagnetic relay is activated to lock it.

[0083] Step 4: Open the exhaust valve 2, and the suction-type structural foundation M is hoisted into the water and sinks under its own weight.

[0084] Step 5: Close the exhaust valve 2, and unlatch the suction structure base M to sink under negative pressure.

[0085] Step 6: When the soil plug sinks to the vicinity of the design elevation or the soil plug is monitored to be higher than the elevation of the telescopic pipe 9, the negative pressure pumping is stopped.

[0086] Specifically, the first laser rangefinder 8 and the second laser rangefinder 7 are turned on to monitor the mud surface elevation inside the suction pile in real time. When the pile sinks to near the design elevation or the soil plug uplift is detected to be higher than the elevation of the telescopic tube 9, the negative pressure pumping is suspended.

[0087] Step seven, open the exhaust valve 2, inject high-pressure air into the pile to level the mud surface.

[0088] Specifically, open the exhaust valve 2, start the air compressor to inject high-pressure air into the pile to level the mud surface, and stop when the laser rangefinder value shows the distance from the end of the telescopic tube 9 to the inner wall of the opposite suction pile.

[0089] Step 8: If the required elevation is not reached, repeat the above steps.

[0090] Specifically, if the designed sinking elevation is reached, construction is stopped; if the designed sinking elevation is not reached, steps five to seven are repeated.

[0091] Step nine, the electromagnetic relay is started in reverse, and the telescopic tube 9 is closed.

[0092] Step 10: Remove the mounting clamp 1 and recycle the equipment.

[0093] Specifically, the hydraulic device 4 is loosened, the mounting clamp 1 is removed, and the deck crane cooperates with the recovery equipment and cleans it.

[0094] This application levels the raised mud surface inside the pile and measures the elevation during the sinking of the structure. On the one hand, leveling the mud surface inside the pile during the sinking of the structure solves the blind spots in current research and design, making construction easier. On the other hand, monitoring data can be collected during the construction process, providing more reference value for future structural design. This application can be installed simultaneously on the deck and the negative pressure sinking construction equipment, enabling remote operation of the deck and land installation. After launching, work and recovery can be automated, saving labor costs. In this application, some operating circuits are led to the deck for remote operation, realizing intelligent construction and information management. The lines can be led to the deck through the handle spindle pipe, and a separate pipeline channel can also be opened. In summary, this application has good market application prospects.

[0095] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0096] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0097] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0098] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit the present application. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application and should be included within the scope of the claims of the present application.

Claims

1. A suction-type structure foundation auxiliary negative pressure sinking device, characterized in that: include: An installation clamp is installed on which an exhaust valve is installed, and the exhaust valve is an automatic on-off valve; a stretching device disposed through the mounting clamp; An air compressor pipeline is passed through the mounting clamp, and an end of the air compressor pipeline is rotatably connected to a telescopic tube, and the telescopic tube is movably connected to the extension device; The stretching device includes: a handle spindle, a spindle tube, an adjustment button, a spring and a chuck. The handle spindle is installed in the spindle tube, the adjustment button is installed at the end of the handle spindle, the spring is sleeved on the handle spindle and arranged close to the adjustment button, and the chuck is rotatably installed at the other end of the handle spindle; The stretching device further includes: an electromagnetic relay and a latch hole, wherein the electromagnetic relay is mounted on the upper surface of the upper plate, and a latch is slidably provided on the upper surface of the upper plate, wherein the latch is matched with the latch hole; The two ends of the mounting clamp are respectively connected to the spare openings on the pile top of the suction type structural foundation through a hydraulic device and a hinged manner; The mounting clamp is a U-shaped groove structure, and a sensor is also provided on the mounting clamp.

2. The suction-type structure foundation auxiliary negative pressure sinking device according to claim 1, characterized in that: When the adjustment button is pressed, the spring is compressed and the handle main shaft moves downward and deflects, so that the chuck moves around the handle main shaft and retracts into the main shaft tube; When the height is adjusted to the desired level, the adjusting button is released to open the telescopic tube.

3. The suction-type structure foundation auxiliary negative pressure sinking device according to claim 1, characterized in that: The electromagnetic relay controls the sliding direction of the latch based on magnetic force, and enables the latch to be inserted into or withdrawn from the latch hole; When the clamp is locked, the electromagnetic relay applies an attractive force; when the construction is completed, the electromagnetic relay applies a reverse magnetic force, and the latch is pulled out in the reverse direction to release the lock. Under the elastic force of the spring, the telescopic tube returns to a vertical state.

4. The suction-type structure foundation auxiliary negative pressure sinking device according to claim 1, characterized in that: The stretching device further comprises a first laser rangefinder installed at the end of the main shaft of the handle.

5. The suction-type structure foundation auxiliary negative pressure sinking device according to claim 1, characterized in that: The stretching device also includes a second laser rangefinder installed on the main shaft of the handle.

6. The suction-type structure foundation auxiliary negative pressure sinking device according to any one of claims 1 to 5, characterized in that: The stretching device also includes: an upper rod and a lower rod, one end of the telescopic tube is movably connected to the upper rod and the lower rod, the upper rod is also movably connected to the rod sleeve, and the lower rod is also movably connected to the handle main shaft.

7. The suction-type structure foundation auxiliary negative pressure sinking device according to any one of claims 1 to 5, characterized in that: The telescopic tube comprises a telescopic rod and a tube head arranged at the end of the telescopic rod, and the tube head is a flat structure.

8. The suction-type structure foundation auxiliary negative pressure sinking device according to any one of claims 1 to 5, characterized in that: The telescopic tube is rotatably connected to the air compressor pipeline through a corrugated hose.

9. The suction-type structure foundation auxiliary negative pressure sinking device according to any one of claims 1 to 5, characterized in that: Also includes: A fixed bracket, wherein the vertical rod in the fixed bracket is connected to the telescopic tube through a rod sleeve, wherein the upper end of the fixed bracket is fixed to the lower surface of the plate, and the lower end of the fixed bracket is rotatably connected to one end of the telescopic tube.

10. A construction method for a suction-type structural foundation auxiliary negative pressure sinking device according to any one of claims 1 to 9, characterized in that: The construction method comprises: Adjust the length of the telescopic tube; Install the above-mentioned mounting clamps; Adjust the extension device to temporarily lock it; Open the exhaust valve, and the suction-type structural foundation is hoisted into the water and sinks under its own weight; Close the exhaust valve, unlock the suction structure foundation and sink under negative pressure; When the soil sinks to the design elevation or the soil plug uplift is detected to be higher than the expansion pipe elevation, the negative pressure pumping is stopped; Open the exhaust valve and inject high-pressure air into the pile to level the mud surface; If the elevation involved is not reached, repeat the above steps; Remove the mounting clamps and recycle the equipment.

11. The construction method according to claim 10, characterized in that: The temporary locking of the above-mentioned adjustment and extension device includes: pressing the adjustment button and lifting the handle spindle upwards, and when the clamping head is stuck on the upper surface of the plate, the electromagnetic relay is started to lock.

12. The construction method according to claim 10, characterized in that: Before removing the mounting clamp, the process also includes: starting the electromagnetic relay in reverse and closing the telescopic tube.

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