Subway shield tunnel obstacle pile breaking and backfilling device

Abstract

The utility model discloses a subway shield tunnel barrier pile breaking and backfilling device, and relates to the technical field of underwater barrier pile breaking and backfilling construction, the subway shield tunnel barrier pile breaking and backfilling device comprises a support, a backfilling mechanism and a position adjusting mechanism, the backfilling mechanism is provided with a concrete containing cavity, a plurality of discharging structures communicating with the concrete containing cavity are arranged at the bottom end of the backfilling mechanism, discharging openings are formed in the side walls of the discharging structures, and the discharging openings are used for spraying concrete in the concrete containing cavity to drive the backfilling mechanism to rotate around the central axis of the backfilling mechanism. The position adjusting mechanism is installed on the support and used for being filled with fluid and generating buoyancy in water. Through the backfilling mechanism and the position adjusting mechanism, the underwater obstacle pile backfilling device can adapt to a complex underwater environment and an irregular breaking space, it is guaranteed that concrete is evenly distributed in the irregular breaking space, and the concrete backfilling quality after underwater obstacle piles are broken is improved.

Description

Technical Field

[0001] This utility model relates to the field of underwater obstacle pile removal and backfilling construction technology, and in particular to a device for removing and backfilling obstacle piles in subway shield tunnels. Background Technology

[0002] With the acceleration of urbanization, subway construction has become an important means of alleviating urban traffic pressure. During the construction of subway shield tunnels, underground obstacles are frequently encountered, especially underwater obstacle piles, which seriously affect the construction progress and quality.

[0003] Currently, a combination of mechanical crushing and hydraulic impact is mainly used to remove obstacle piles. After removal, high-pressure grouting is typically used for backfilling to ensure the stability and safety of the tunnel structure.

[0004] However, existing subway shield tunnel obstacle pile breaking and backfilling devices mostly adopt a fixed-range pouring method when constructing underwater environments. This is difficult to adapt to complex underwater environments and irregular breaking spaces, resulting in uneven concrete distribution and reduced concrete backfilling quality after underwater obstacle pile breaking. Utility Model Content

[0005] The main purpose of this utility model is to propose a device for backfilling after breaking underwater obstacle piles in subway shield tunnels, which aims to solve the technical problem of uneven distribution of backfill concrete after breaking underwater obstacle piles in the prior art.

[0006] To achieve the above objectives, this utility model proposes a device for breaking and backfilling obstacle piles in subway shield tunnels, which is used for underwater construction.

[0007] The subway shield tunnel obstacle pile breaking and backfilling device includes:

[0008] A bracket that extends vertically;

[0009] A backfilling mechanism is rotatably mounted on the bottom end of the support. The backfilling mechanism is provided with a concrete receiving cavity. The bottom end of the backfilling mechanism is provided with multiple discharge structures, all of which are connected to the concrete receiving cavity. The multiple discharge structures are distributed at intervals along the circumference of the backfilling mechanism. Each of the multiple discharge structures has a discharge port on its side wall. The discharge port extends along the circumference of the backfilling mechanism and is used to spray concrete from the concrete receiving cavity to drive the backfilling mechanism to rotate around its central axis.

[0010] A position adjustment mechanism is mounted on the bracket. The position adjustment mechanism is provided with a fluid filling chamber, which is used to fill fluid and generate buoyancy in water.

[0011] In one embodiment, the backfilling mechanism includes an mounting ring, a connecting ring, and a backfilling head. The mounting ring is sleeved on the bottom end of the bracket. The backfilling head is a vertically extending columnar structure. The top of the backfilling head is recessed downward to form the concrete receiving cavity. The connecting ring is rotatably sleeved on the mounting ring. A plurality of discharge structures are installed on the bottom end of the backfilling head, and the plurality of discharge structures are distributed at intervals along the circumference of the backfilling head.

[0012] In one embodiment, a discharge pipe is installed at the bottom of the backfill head, the discharge pipe extends vertically, the discharge pipe is coaxially arranged with the backfill head, and the bottom end of the discharge pipe has a discharge port communicating with the concrete receiving cavity.

[0013] In one embodiment, the discharge structure includes a discharge branch pipe and a guide plate. The top end of the discharge branch pipe is connected to the bottom end of the backfill head, and the top end of the discharge branch pipe is connected to the concrete receiving cavity. The bottom end of the discharge branch pipe is provided with the guide plate, and the discharge port is opened on the side wall of the discharge branch pipe. The discharge port extends vertically upward from the top end of the guide plate.

[0014] In one embodiment, the guide plate is inclined vertically downwards.

[0015] In one embodiment, the position adjustment mechanism includes a support ring, a fluid filling structure, and a plurality of mounting legs. The plurality of mounting legs are spaced apart circumferentially along the support ring. One end of each mounting leg is connected to the bottom of the support ring, and the other end of each mounting leg is connected to the peripheral wall of the bracket. The support ring is disposed above the backfilling mechanism. The fluid filling structure covers the support ring and is provided with a fluid filling cavity, which communicates with an external fluid filling mechanism.

[0016] In one embodiment, the fluid filling structure includes a fluid filling body and a fluid filling tube. The fluid filling body covers the support ring and has a fluid filling cavity. The fluid filling tube is installed on the bracket, with one end of the fluid filling tube communicating with the fluid filling cavity and the other end of the fluid filling tube communicating with the fluid filling mechanism.

[0017] In one embodiment, the fluid filling structure extends circumferentially along the support ring.

[0018] In one embodiment, there are multiple fluid filling structures, which are spaced apart circumferentially along the support ring.

[0019] In one embodiment, the support includes a feed pipe, the backfilling mechanism is rotatably mounted on the bottom end of the feed pipe, and the concrete receiving cavity is connected to an external concrete pump through the feed pipe.

[0020] The technical solution of this utility model, through the rotational motion of the backfilling mechanism and the buoyancy adjustment of the position adjustment mechanism, compared with the traditional fixed-range pouring method, can adapt to complex underwater environments and irregular demolition spaces, ensuring that the concrete is evenly distributed within the irregular demolition space, thus improving the quality of concrete backfill after the underwater obstacle pile is demolished. Furthermore, the entire backfilling process can achieve continuous and uniform operation, improving the efficiency of concrete backfilling after the underwater obstacle pile is demolished. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of the obstacle pile breaking and backfilling device for subway shield tunnels provided by this utility model;

[0023] Figure 2 A schematic diagram of another embodiment of the obstacle pile breaking and backfilling device for subway shield tunnels provided by this utility model;

[0024] Figure 3 An exploded structural diagram of an embodiment of the subway shield tunnel obstacle pile breaking and backfilling device provided by this utility model;

[0025] Figure 4 This is an exploded structural diagram of an embodiment of the backfilling mechanism and position adjustment mechanism involved in this utility model.

[0026] Explanation of icon numbers:

[0027] 100, Support; 200, Backfilling mechanism; 201, Concrete receiving cavity; 300, Discharge structure; 400, Position adjustment mechanism; 110, Feed pipe; 210, Mounting ring; 220, Connecting ring; 230, Backfilling head; 240, Main discharge pipe; 241, Discharge port; 301, Discharge port; 310, Discharge branch pipe; 320, Guide plate; 401, Fluid filling cavity; 410, Support ring; 420, Fluid filling structure; 430, Mounting leg; 421, Fluid filling body; 422, Fluid filling pipe.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] With the acceleration of urbanization, subway construction has become an important means of alleviating urban traffic pressure. During the construction of subway shield tunnels, underground obstacles are frequently encountered, especially underwater obstacle piles, which seriously affect the construction progress and quality.

[0033] Currently, a combination of mechanical crushing and hydraulic impact is mainly used to remove obstacle piles. After removal, high-pressure grouting is typically used for backfilling to ensure the stability and safety of the tunnel structure.

[0034] However, existing subway shield tunnel obstacle pile breaking and backfilling devices mostly adopt a fixed-range pouring method when constructing underwater environments. This is difficult to adapt to complex underwater environments and irregular breaking spaces, resulting in uneven concrete distribution and reduced concrete backfilling quality after underwater obstacle pile breaking.

[0035] To solve this technical problem, this utility model proposes a device for breaking and backfilling obstacle piles in subway shield tunnels.

[0036] Please see Figures 1 to 4 In one embodiment of this utility model, the subway shield tunnel obstacle pile breaking and backfilling device is used for underwater construction. The device includes a support 100, a backfilling mechanism 200, and a position adjustment mechanism 400. The support 100 extends vertically. The backfilling mechanism 200 is rotatably mounted on the bottom end of the support 100. The backfilling mechanism 200 is provided with a concrete receiving cavity 201, and multiple discharge structures 300 are provided at the bottom end of the backfilling mechanism 200. All discharge structures 300 are connected to the concrete receiving cavity 201. Multiple discharge structures 300 are distributed circumferentially along the backfilling mechanism 200. Each discharge structure 300 has a discharge port 301 on its side wall. The discharge port 301 extends circumferentially along the backfilling mechanism 200. The discharge port 301 is used to spray concrete from the concrete receiving cavity 201 to drive the backfilling mechanism 200 to rotate around its central axis. The position adjustment mechanism 400 is installed on the bracket 100. The position adjustment mechanism 400 is provided with a fluid filling cavity 401. The fluid filling cavity 401 is used to fill fluid and generate buoyancy in water.

[0037] Specifically, the backfilling mechanism 200 is equipped with a concrete receiving cavity 201 for receiving and storing concrete pumped in by an external concrete pumping mechanism. Multiple discharge structures 300 are located at the bottom of the backfilling mechanism 200, all of which are connected to the concrete receiving cavity 201, ensuring that concrete can flow smoothly from the receiving cavity to the discharge structures 300. The multiple discharge structures 300 are distributed circumferentially around the backfilling mechanism 200, achieving multi-directional concrete backfilling. Each discharge structure 300 has a discharge port 301 on its side wall, and the multiple discharge ports 301 extend circumferentially along the backfilling mechanism 200, forming a ring-shaped spray structure.

[0038] When concrete is ejected from multiple discharge ports 301 under the pumping force of the external concrete pumping mechanism, the ejected concrete generates a reaction force because the discharge ports 301 extend circumferentially along the backfilling mechanism 200. This reaction force acts on the backfilling mechanism 200, driving it to rotate around its central axis. This rotation ensures that the concrete is evenly distributed within the demolition space, effectively solving the problem of uneven concrete distribution caused by fixed-range pouring.

[0039] The position adjustment mechanism 400 is equipped with a fluid filling chamber 401 for filling with fluid and generating buoyancy in water. By adjusting the amount of fluid in the fluid filling chamber 401, the buoyancy of the device can be changed, thereby adjusting the position of the device in the water. This enables the subway shield tunnel obstacle pile breaking and backfilling device to adapt to underwater environments at different depths, improving the applicability and flexibility of underwater concrete backfilling construction.

[0040] In practical applications, operators can adjust the fluid volume in the position adjustment mechanism 400 according to the shape and size of the space after the underwater obstacle pile is broken, so that the device reaches the appropriate depth. Then, concrete is injected into the concrete receiving cavity 201 of the backfilling mechanism 200. When the concrete is sprayed out from the discharge port 301, the backfilling mechanism 200 begins to rotate, achieving uniform distribution of the concrete. At the same time, operators can adjust the position of the subway shield tunnel obstacle pile breaking and backfilling device as needed through the position adjustment mechanism 400 to ensure the accuracy of the backfilling process.

[0041] In the technical solution provided by this utility model, through the rotational motion of the backfilling mechanism 200 and the buoyancy adjustment of the position adjustment mechanism 400, compared with the traditional fixed-range pouring method, this device can adapt to complex underwater environments and irregular demolition spaces, ensuring that the concrete is evenly distributed within the irregular demolition space, thus improving the quality of concrete backfill after the underwater obstacle pile is demolished. Furthermore, the entire backfilling process can achieve continuous and uniform operation, improving the efficiency of concrete backfilling after the underwater obstacle pile is demolished.

[0042] Please continue reading. Figure 3 and Figure 4 In an embodiment of this utility model, the backfilling mechanism 200 includes an installation ring 210, a connecting ring 220, and a backfilling head 230. The installation ring 210 is sleeved on the bottom end of the bracket 100. The backfilling head 230 is a columnar structure extending vertically. The top of the backfilling head 230 is recessed downward to form a concrete receiving cavity 201. The connecting ring 220 is rotatably sleeved on the installation ring 210. Multiple discharge structures 300 are installed on the bottom end of the backfilling head 230 and are distributed at intervals along the circumference of the backfilling head 230.

[0043] Specifically, the mounting ring 210 is tightly fitted onto the bottom end of the bracket 100, providing stable support for the entire backfilling mechanism 200. This enables the backfilling mechanism 200 to withstand the pressure and impact in the underwater environment, ensuring the stability of the device during operation. The mounting ring 210 also facilitates the installation and disassembly of the backfilling mechanism 200, improving the maintainability and reliability of the device.

[0044] The connecting ring 220 is rotatably fitted onto the mounting ring 210, allowing the backfill head 230 to rotate while maintaining a vertical position. A bearing or other low-friction structure can be used between the connecting ring 220 and the mounting ring 210 to ensure that the backfill mechanism 200 can rotate smoothly during concrete spraying.

[0045] The columnar structure of the backfill head 230 not only increases the strength of the device but also provides sufficient volume for the concrete receiving cavity 201. The concrete receiving cavity 201, formed by the downward indentation at the top of the backfill head 230, can temporarily store the concrete to be sprayed, ensuring the continuity of the backfilling process. This facilitates the uniform distribution of concrete within the receiving cavity, preparing it for subsequent spraying.

[0046] Multiple discharge structures 300 are installed at the bottom of the backfill head 230 and are distributed at intervals along the circumference of the backfill head 230. This ensures that concrete can be sprayed evenly to multiple corners of the demolition space from multiple directions. The number and distribution of the discharge structures 300 can be adjusted according to actual needs to adapt to demolition spaces of different sizes and shapes.

[0047] More specifically, concrete enters the concrete receiving cavity 201 through a delivery pipe. When the concrete is sprayed out from the discharge port 301 of the discharge structure 300, the resulting reaction force drives the connecting ring 220 to rotate on the mounting ring 210, causing the entire backfill head 230 to rotate. This enables 360-degree uniform spraying of concrete, effectively solving the problem of uneven concrete distribution caused by fixed-range pouring.

[0048] Furthermore, the columnar structure of the backfill head 230 also contributes to the stability of the device in an underwater environment. Once the device is adjusted to the appropriate depth via the position adjustment mechanism 400, the vertical structure of the backfill head 230 can resist the impact of water flow, maintaining the stability of the device and thus ensuring the accuracy and uniformity of concrete backfilling.

[0049] Please continue reading. Figures 1 to 3 In an embodiment of this utility model, a discharge pipe 240 is installed at the bottom of the backfill head 230. The discharge pipe 240 extends vertically and is coaxially arranged with the backfill head 230. A discharge port 241 communicating with the concrete receiving cavity 201 is opened at the bottom end of the discharge pipe 240.

[0050] Specifically, the discharge pipe 240 is installed at the bottom of the backfill head 230, and the discharge pipe 240 extends vertically, ensuring that the concrete maintains a stable flow direction during transportation and reducing the possibility of blockage or uneven flow of concrete during transportation.

[0051] The discharge pipe 240 and the backfill head 230 are coaxially arranged, ensuring a smooth transition of concrete from the concrete receiving cavity 201 to the discharge pipe 240 and reducing turbulence and energy loss during the concrete flow process. Secondly, the coaxial arrangement allows the backfill mechanism 200 to maintain good balance during its rotation, avoiding vibration and instability that may be caused by structural asymmetry.

[0052] The discharge port 241 at the bottom of the discharge pipe 240 is directly connected to the concrete receiving cavity 201, which can ensure the concrete coverage of the space below the backfill head 230. Then, multiple discharge structures 300 are used to evenly distribute the remaining concrete, which effectively improves the efficiency and uniformity of concrete backfilling.

[0053] In practical applications, since the discharge pipe 240 and the backfill head 230 are coaxially arranged, the concrete will not generate eccentric force during the flow process, thus ensuring the stability of the backfilling mechanism 200 during operation.

[0054] Furthermore, the presence of the discharge main pipe 240 increases the structural strength of the backfilling mechanism 200. In an underwater environment, the backfilling mechanism 200 may be subjected to various external forces. As a vertically extending structure, the discharge main pipe 240 enhances the overall rigidity of the backfill head 230, improving the reliability and durability of the device in harsh environments.

[0055] Please continue reading. Figures 1 to 3 In an embodiment of this utility model, the discharge structure 300 includes a discharge branch pipe 310 and a guide plate 320. The top end of the discharge branch pipe 310 is connected to the bottom end of the backfill head 230, and the top end of the discharge branch pipe 310 is connected to the concrete receiving cavity 201. The bottom end of the discharge branch pipe 310 is provided with a guide plate 320, and the side wall of the discharge branch pipe 310 is provided with a discharge port 301, which extends vertically upward from the top end of the guide plate 320.

[0056] Specifically, the connection between the top end of the discharge branch pipe 310 and the bottom end of the backfill head 230 ensures a smooth transition of concrete from the concrete receiving cavity 201 to the discharge branch pipe 310. This reduces the resistance of the concrete during flow and improves conveying efficiency. As the main channel for concrete conveying, the structure and arrangement of the discharge branch pipe 310 directly affect the uniformity of concrete distribution. The guide plate 320 at the bottom of the discharge branch pipe 310 plays a crucial guiding and diversion role. When concrete flows out of the discharge branch pipe 310, the guide plate 320 can effectively guide the flow direction of the concrete, preventing the concrete from falling directly and causing local accumulation. This guiding effect helps the concrete to be distributed more evenly in the underwater environment, reducing the risk of voids or uneven compaction during backfilling.

[0057] The discharge port 301 is located on the side wall of the discharge branch pipe 310 and extends vertically upward from the top of the guide plate 320, which helps the concrete to spread and distribute better in the underwater environment. The presence of the guide plate 320 ensures that concrete not sprayed from the discharge port 301 does not fall directly. The guide plate 320 guides this portion of concrete to the surrounding area, further increasing the uniformity of concrete distribution. This diversion and guiding effect reduces the risk of concrete accumulation in local areas and improves backfill quality.

[0058] Furthermore, when the backfilling mechanism 200 rotates, the combined structure of the discharge branch pipe 310 and the guide plate 320 produces a more uniform concrete distribution. The rotation ensures that each discharge structure 300 covers a certain circumferential area, while the vertical extension of the discharge port 301 ensures that the concrete is fully distributed in the vertical direction. This three-dimensional distribution effect further improves the uniformity and compaction of the backfill.

[0059] Please continue reading. Figures 1 to 3 In this embodiment of the utility model, the guide plate 320 is inclined downwards along the vertical direction.

[0060] Specifically, because the guide plate 320 is inclined vertically downwards, it can more effectively guide the concrete that is not sprayed from the outlet 301 to flow to the surrounding area. This inclination angle means that the concrete does not fall directly after contacting the guide plate 320, but flows along the inclined surface, thereby increasing the diffusion range of the concrete.

[0061] In practical applications, the inclined guide plate 320 can guide concrete to a wider area. This helps the concrete to be distributed more evenly in the horizontal direction, reducing the risk of local accumulation.

[0062] Meanwhile, the tilt angle of the guide plate 320 can also affect the flow rate of concrete. An appropriate tilt angle can keep the concrete at a moderate flow rate on the guide plate 320, preventing concrete from splashing due to excessive speed and from clogging due to excessive speed.

[0063] The inclined design of the guide plate 320 also helps reduce concrete accumulation on the discharge structure 300. Due to gravity, the concrete flows naturally along the inclined surface, reducing the time it spends on the guide plate 320 and lowering the risk of blockage in the discharge structure 300. This self-cleaning effect improves the reliability and continuous operation of the device.

[0064] Please continue reading. Figures 1 to 4In an embodiment of this utility model, the position adjustment mechanism 400 includes a support ring 410, a fluid filling structure 420, and a plurality of mounting legs 430. The plurality of mounting legs 430 are arranged at intervals along the circumference of the support ring 410. One end of each mounting leg 430 is connected to the bottom of the support ring 410, and the other end of each mounting leg 430 is connected to the peripheral wall of the bracket 100. The support ring 410 is disposed above the backfilling mechanism 200. The fluid filling structure 420 covers the support ring 410. The fluid filling structure 420 is provided with a fluid filling cavity 401, which is connected to an external fluid filling mechanism.

[0065] Specifically, the support ring 410 not only enhances the overall structural strength of the device but also provides an installation platform for the fluid filling structure 420. This allows the position adjustment mechanism 400 to effectively control the height and orientation of the backfilling mechanism 200, thereby achieving more precise backfilling operations.

[0066] Multiple mounting legs 430 are spaced apart circumferentially along the support ring 410. One end of each mounting leg 430 is connected to the bottom of the support ring 410, and the other end is connected to the peripheral wall of the bracket 100, ensuring a tight fit between the position adjustment mechanism 400 and the entire device. The number and distribution of the mounting legs 430 can be adjusted according to actual needs to adapt to different working environments and load requirements.

[0067] The fluid filling structure 420 covers the support ring 410, allowing the fluid filling chamber 401 to make maximum use of the space surrounding the support ring 410. The fluid filling structure 420 enables the position adjustment mechanism 400 to adjust the buoyancy of the device by changing the amount of fluid in the fluid filling chamber 401. The fluid filling chamber 401 is connected to an external fluid filling mechanism, allowing the operator to adjust the fluid volume as needed, thereby achieving more precise control of the device's position.

[0068] In practical applications, when the position of the device needs to be adjusted, the operator can inject or withdraw fluid into the fluid filling chamber 401 through an external fluid filling mechanism. Injecting fluid increases the buoyancy of the device, causing it to rise; withdrawing fluid reduces the buoyancy, causing the device to descend.

[0069] Furthermore, the presence of the fluid filling structure 420 can also improve the stability of the device in an underwater environment. When the device is impacted by water flow, the fluid in the fluid filling chamber 401 can act as a buffer, reducing the shaking of the device and ensuring the stability and accuracy of the backfilling process.

[0070] The position adjustment mechanism 400 also has good adaptability. By adjusting the fluid volume in the fluid filling chamber 401, the device can adapt to underwater environments at different depths. This enables the device to perform obstacle pile removal and backfilling work under complex underwater conditions, expanding its application range.

[0071] Please continue reading. Figures 1 to 4 In an embodiment of this utility model, the fluid filling structure 420 includes a fluid filling body 421 and a fluid filling tube 422. The fluid filling body 421 covers the support ring 410 and is provided with a fluid filling cavity 401. The fluid filling tube 422 is installed on the bracket 100. One end of the fluid filling tube 422 is connected to the fluid filling cavity 401, and the other end of the fluid filling tube 422 is connected to the fluid filling mechanism.

[0072] Specifically, the fluid filling body 421 covers the support ring 410, making full use of the space around the support ring 410 and maximizing the volume of the fluid filling chamber 401. The fluid filling body 421 not only increases the buoyancy adjustment range of the device but also improves the structural strength of the position adjustment mechanism 400. The fluid filling chamber 401 is located inside the fluid filling body 421, providing a closed storage space for the fluid and ensuring the controllability and safety of the fluid filling process.

[0073] The fluid filling pipe 422 is mounted on the bracket 100, allowing it to form an integral part of the entire device and enhancing stability. One end of the fluid filling pipe 422 is connected to the fluid filling chamber 401, and the other end is connected to the fluid filling mechanism, forming a fluid transmission channel. This allows the operator to control the amount of fluid in the fluid filling chamber 401 through the external fluid filling mechanism.

[0074] In practical applications, when the position of the device needs to be adjusted, the operator can inject or extract fluid into the fluid filling pipe 422 through the fluid filling mechanism. The fluid enters or leaves the fluid filling chamber 401 through the fluid filling pipe 422, thereby changing the buoyancy of the device. This enables rapid response, allowing the device to quickly adjust to the desired position; position adjustment can be achieved by controlling the fluid injection or extraction rate; and the closed-loop fluid transmission method reduces the interference of the underwater environment on the adjustment process.

[0075] Furthermore, the fluid filling body 421 covering the support ring 410 can reduce the direct impact of water flow on the support ring 410, extending the service life of the device. At the same time, the fluid filling body 421 also increases the device's buffering capacity, helping to reduce vibration and swaying during underwater operations and improve the accuracy of the backfilling process.

[0076] The fluid filling pipe 422 is mounted on the bracket 100, which also facilitates maintenance and repair. Operators can easily inspect and maintain the fluid filling pipe 422, improving the practicality and economy of the device.

[0077] Please continue reading. Figures 1 to 4 In an embodiment of this utility model, the fluid filling structure 420 extends circumferentially along the support ring 410.

[0078] Specifically, the fluid filling structure 420 extends circumferentially along the support ring 410, forming an annular fluid filling cavity 401. This maximizes the volume of the fluid filling cavity 401, increasing the buoyancy adjustment range of the device; the annular distribution ensures uniform distribution of fluid within the filling cavity, avoiding local buoyancy imbalances; and improves the structural strength and stability of the entire position adjustment mechanism 400.

[0079] In practical applications, when the device's position needs to be adjusted, fluid is evenly injected into or discharged from the annular fluid filling chamber 401. This uniform fluid distribution ensures the device maintains a horizontal attitude during ascent or descent, avoiding the risk of tilting or capsizing. Simultaneously, the annular fluid distribution provides more stable buoyancy support, reducing swaying and vibration of the device in underwater environments.

[0080] The annular extension of the fluid filling structure 420 further enhances the device's resistance to water flow impact. When the device is subjected to lateral water flow impact, the annularly distributed fluid filling structure 420 provides a buffering effect, effectively reducing the impact of water flow on the device's attitude.

[0081] Furthermore, the annularly extended fluid filling structure 420 optimizes the device's center of gravity distribution. Because the fluid is evenly distributed around the support ring 410, the device's center of gravity is more concentrated, which improves the device's stability and maneuverability in underwater environments. Operators can more precisely control the device's position and attitude, thereby improving the quality and efficiency of backfilling operations.

[0082] Please continue reading. Figures 1 to 4 In the embodiments of this utility model, there are multiple fluid filling structures 420, and the multiple fluid filling structures 420 are arranged at intervals along the circumference of the support ring 410.

[0083] Specifically, multiple fluid filling structures 420 are arranged at circumferential intervals along the support ring 410, forming a segmented fluid filling system. Even if one fluid filling structure 420 fails, the other structures can still ensure the normal operation of the device. The segmented fluid filling system allows for more precise buoyancy adjustment of the device, and operators can control each fluid filling structure 420 individually to achieve more accurate position adjustment, thus improving the flexibility and adaptability of the entire position adjustment mechanism 400.

[0084] In practical applications, when the position of the device needs to be adjusted, the operator can selectively control different fluid filling structures 420. For example, if the device needs to tilt in a certain direction, the fluid volume of the fluid filling structure 420 in that direction can be increased, while the fluid volume of the fluid filling structure 420 on the opposite side can be decreased. This allows the device to adapt to various complex underwater environments and disrupt spatial shapes.

[0085] The spaced arrangement of multiple fluid filling structures 420 further enhances the device's resistance to water flow impacts. When the device is subjected to uneven water flow impacts, the operator can balance the external force and maintain the stability of the device by adjusting the fluid volume of the fluid filling structures 420 at different positions.

[0086] During backfilling operations, the presence of multiple fluid filling structures 420 enables more complex attitude adjustments. For example, by simultaneously adjusting multiple fluid filling structures 420, the device can be rotated, tilted, or moved in a specific direction. This multi-degree-of-freedom adjustment capability improves the device's adaptability and operational efficiency in complex underwater environments.

[0087] Please continue reading. Figures 1 to 3 In an embodiment of this utility model, the support 100 includes a feed pipe 110, the backfilling mechanism 200 is rotatably mounted on the bottom end of the feed pipe 110, and the concrete receiving cavity 201 is connected to an external concrete pump through the feed pipe 110.

[0088] Specifically, the feed pipe 110, as part of the support frame 100, not only provides structural support for the entire device but also undertakes the important task of concrete conveying. This simplifies the device's structure, reduces the number of components, and improves overall reliability and durability.

[0089] The backfilling mechanism 200 is rotatably mounted at the bottom end of the feed pipe 110, enabling its self-rotation function while ensuring a continuous supply of concrete. The rotatable mounting method of the backfilling mechanism 200 can employ bearings or other low-friction structures to ensure smooth self-rotation during concrete conveying.

[0090] The concrete receiving cavity 201 is connected to an external concrete pump via the feed pipe 110, forming a complete concrete conveying channel. This allows concrete to be directly conveyed from the external pump to the concrete receiving cavity 201 of the backfilling mechanism 200 without intermediate transfer links, thus improving conveying efficiency and continuity.

[0091] In practical applications, when backfilling is required, an external concrete pump can continuously deliver concrete to the concrete receiving cavity 201 through the feed pipe 110. Since the feed pipe 110 is fixed, while the backfilling mechanism 200 can rotate, the backfilling mechanism 200 rotates while receiving concrete. This improves the efficiency and uniformity of the backfilling process.

[0092] More specifically, the feed pipe 110 simplifies the control process of the concrete delivery system. Operators only need to control the delivery rate of the external concrete pump to adjust the amount of concrete in the concrete receiving cavity 201. This improves the accuracy and controllability of the backfilling process.

[0093] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A device for removing and backfilling obstacle piles in a subway shield tunnel, characterized in that, Used for underwater construction; The subway shield tunnel obstacle pile breaking and backfilling device includes: A bracket that extends vertically; A backfilling mechanism is rotatably mounted on the bottom end of the support. The backfilling mechanism is provided with a concrete receiving cavity. The bottom end of the backfilling mechanism is provided with multiple discharge structures, all of which are connected to the concrete receiving cavity. The multiple discharge structures are distributed at intervals along the circumference of the backfilling mechanism. Each of the multiple discharge structures has a discharge port on its side wall. The discharge port extends along the circumference of the backfilling mechanism and is used to spray concrete from the concrete receiving cavity to drive the backfilling mechanism to rotate around its central axis. A position adjustment mechanism is mounted on the bracket. The position adjustment mechanism is provided with a fluid filling chamber, which is used to fill fluid and generate buoyancy in water.

2. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 1, characterized in that, The backfilling mechanism includes an installation ring, a connecting ring, and a backfilling head. The installation ring is sleeved on the bottom end of the bracket. The backfilling head is a columnar structure extending vertically. The top of the backfilling head is recessed downward to form the concrete receiving cavity. The connecting ring is rotatably sleeved on the installation ring. Multiple discharge structures are installed on the bottom end of the backfilling head and are distributed at intervals along the circumference of the backfilling head.

3. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 2, characterized in that, The bottom of the backfill head is equipped with a discharge pipe that extends vertically and is coaxial with the backfill head. The bottom end of the discharge pipe has a discharge port that communicates with the concrete receiving cavity.

4. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 2, characterized in that, The discharge structure includes a discharge branch pipe and a guide plate. The top end of the discharge branch pipe is connected to the bottom end of the backfill head. The top end of the discharge branch pipe is connected to the concrete receiving cavity. The bottom end of the discharge branch pipe is provided with the guide plate. The discharge port is opened on the side wall of the discharge branch pipe. The discharge port extends vertically upward from the top end of the guide plate.

5. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 4, characterized in that, The guide plate is inclined vertically downwards.

6. The subway shield tunnel obstacle pile breaking and backfilling device as described in any one of claims 1 to 5, characterized in that, The position adjustment mechanism includes a support ring, a fluid filling structure, and multiple mounting legs. The multiple mounting legs are spaced apart circumferentially along the support ring. One end of each mounting leg is connected to the bottom of the support ring, and the other end of each mounting leg is connected to the peripheral wall of the bracket. The support ring is located above the backfilling mechanism. The fluid filling structure covers the support ring and has a fluid filling cavity that communicates with an external fluid filling mechanism.

7. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 6, characterized in that, The fluid filling structure includes a fluid filling body and a fluid filling tube. The fluid filling body covers the support ring and has a fluid filling cavity. The fluid filling tube is installed on the bracket. One end of the fluid filling tube is connected to the fluid filling cavity, and the other end of the fluid filling tube is connected to the fluid filling mechanism.

8. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 7, characterized in that, The fluid filling structure extends circumferentially along the support ring.

9. The subway shield tunnel obstacle pile breaking and backfilling device as described in claim 7, characterized in that, The fluid filling structure is a plurality of such structures, which are arranged at circumferential intervals along the support ring.

10. The subway shield tunnel obstacle pile breaking and backfilling device as described in any one of claims 1 to 5, characterized in that, The support includes a feed pipe, and the backfilling mechanism is rotatably mounted on the bottom end of the feed pipe. The concrete receiving cavity is connected to an external concrete pump through the feed pipe.

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