A construction auxiliary device for preventing subsidence of underground pipelines on municipal roads

Abstract

The present invention discloses an auxiliary device for anti-subsidence construction of underground pipelines in municipal roads, which relates to the technical field of pipeline support structures. The device comprises a pipeline arranged in an underground passage, wherein multiple sections of the pipeline are connected by connecting joints; an annular support ring is sleeved on the outer wall of the connecting joint, and support rods extending downward are connected on both sides of the support ring, and the lower ends of the support rods are drilled into the ground of the passage; a fixing ring is sleeved on the outer wall of the middle part of the pipeline, an upper connecting plate is fixed to the bottom of the fixing ring, a lower connecting plate fixed to the ground of the passage is arranged below the upper connecting plate, and the upper connecting plate and the lower connecting plate are elastically connected by a supporting spring; the present invention realizes the functions of anti-subsidence, anti-vibration and self-adaptive adjustment of the underground pipeline system.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline support structures, in particular to an auxiliary device for anti-settlement construction of underground pipelines on municipal roads. Background Art

[0002] Municipal underground pipelines are a core component of urban infrastructure, carrying out important functions such as water supply, drainage, gas, and communications. However, due to factors such as road loads, geological changes, and long-term use, underground pipelines are prone to displacement or deformation due to factors such as foundation settlement and vibration impact.

[0003] Currently, underground pipeline settlement prevention primarily relies on rigid connections and reinforced traditional flange connections. These bolts secure the pipe joints, but lack sufficient play and are susceptible to breakage due to settlement or vibration. Fixed steel frames supporting the pipelines, while providing short-term stability, lack elastic cushioning and are prone to failure due to vibration fatigue over time. Another approach is to inject cement slurry into the ground to harden the soil, but due to the length of the pipelines, this requires a large number of anchors and is time-consuming.

[0004] Therefore, it is necessary to provide an auxiliary device for anti-settlement construction of underground pipelines on municipal roads to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an auxiliary device for anti-subsidence construction of underground pipelines in municipal roads, comprising a pipeline arranged in an underground passage, wherein multiple sections of the pipeline are connected by connecting joints; an annular support ring is provided on the outer wall of the connecting joint, and support rods extending downward are connected on both sides of the support ring, and the lower ends of the support rods are drilled into the passage stratum; a fixing ring is provided on the outer wall of the middle part of the pipeline, an upper connecting plate is fixed to the bottom of the fixing ring, and a lower connecting plate fixed to the ground of the passage is provided below the upper connecting plate, and the upper connecting plate and the lower connecting plate are elastically connected by a support spring.

[0006] Furthermore, bellows are fixed at both ends of the connection joint, the bellows are connected to the pipeline through flanges, and multiple connecting shafts are slidably provided between the flanges of the two sections of pipeline connected by the same connection joint.

[0007] Furthermore, the support ring is divided into two semicircular ring structures, the two sides of which are connected together by a support rod. A plurality of support tubes are distributed through the support ring, and a slider is slidingly arranged in the support tube. A support plate is provided in one end of each support tube close to the inner wall of the support ring, and an inner spring is provided between the slider and the corresponding support plate. A screw rod rotatably connected to the corresponding support plate is provided in the support tube, and the screw is threadedly connected to the slider.

[0008] Furthermore, the support rod is internally threadedly connected to an inner rod, the outer wall of the support rod supports the lower half of the circular ring structure of the support ring through a nut, and the upper part of the inner rod is fitted to the upper half of the circular ring structure of the support ring through another nut.

[0009] Furthermore, the side wall at the lower end of the support rod is distributed with multiple through side grooves, a side rod is hinged above each side groove, a sliding sleeve is slidably provided at the position of the inner groove of the support rod, and a push rod is hinged between the sliding sleeve and each side rod; the bottom of the inner rod can be embedded in the sliding sleeve.

[0010] Furthermore, the inner rod is a hollow rod, and the top of the inner rod can be connected to a grouting pump.

[0011] Furthermore, gears are rotatably provided on both sides of the lower connecting plate, and racks are fixed on both sides of the upper connecting plate, and the racks are engaged with corresponding gears; a rotating bar is fixed in each of the gears, and the rotating bar is provided with a sliding groove, and a pull rod is hinged in the support ring, and the pull rod at one end of the pipe is slidably connected to the sliding groove of the rotating bar.

[0012] Furthermore, a fitting plate is provided below the lower connecting plate, and the fitting plate is fixed to the channel floor by bolts. A plurality of adjustment rods are threadedly connected in the lower connecting plate, and the lower ends of the adjustment rods are rotatably connected to the fitting plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The connector in this invention achieves a flexible connection between the pipes through a bellows and a sliding connecting shaft, allowing for slight displacement of the pipes during vibration or settlement, thus avoiding the risk of breakage associated with a rigid connection. The support ring and connector form elastic contact via an adjustable support plate and internal spring, effectively absorbing pipeline vibration energy, reducing vibration transmission to the support rod and minimizing the likelihood of support rod settlement.

[0015] In this invention, the inner rod drives the side rods outward and embeds them into the ground. Combined with grouting and hardening technology, this creates an "umbrella-shaped" anchoring structure, significantly enhancing the rod's compressive strength and preventing settlement caused by ground loosening. After grouting the hollow inner rod, the cement slurry penetrates the ground surrounding the side rods, forming a high-strength hardened zone, improving the overall bearing capacity of the ground and adapting to complex geological conditions.

[0016] In the present invention, when the lower connecting plate descends synchronously with ground subsidence, the gear rotates under the traction of the pull rod, driving the rack and upper connecting plate upward, offsetting the impact of ground subsidence and ensuring that the pipeline remains horizontal. The support spring provides continuous buffering force through elastic deformation, preventing the pipeline from sagging due to subsidence or being squeezed by excessive elastic force, thereby extending the service life of the pipeline. The lower connecting plate adjusts the initial height of the fitting plate through an adjustment rod, ensuring that the device can fit tightly with the channel floor under different ground conditions and adapt to different construction environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an auxiliary device for preventing the subsidence of underground pipelines in municipal roads;

[0018] Figure 2 Schematic diagram of the structure of the connecting section in the present invention;

[0019] Figure 3 Schematic diagram of the structure of the support ring in the present invention;

[0020] Figure 4 Schematic diagram of the structure of the support rod in the present invention;

[0021] Figure 5 Schematic diagram of the three-dimensional structure of the fixing ring in the present invention;

[0022] Figure 6 Schematic diagram of the side structure of the fixing ring in the present invention;

[0023] In the figure: 1. Pipe; 2. Connecting joint; 21. Bellows; 22. Flange; 23. Connecting shaft; 3. Support ring; 31. Support cylinder; 32. Screw; 33. Slider; 34. Inner spring; 35. Support plate; 4. Support rod; 41. Inner rod; 42. Side groove; 43. Side rod; 44. Sleeve; 45. Push rod; 5. Fixed ring; 6. Upper connecting plate; 7. Lower connecting plate; 71. Gear; 72. Rack; 73. Rotating bar; 74. Fitting plate; 75. Adjusting rod; 8. Support spring; 9. Pull rod. DETAILED DESCRIPTION

[0024] See also Figures 1-6 In an embodiment of the present invention, an auxiliary device for preventing the subsidence of underground pipelines in municipal roads is provided, comprising a pipeline 1 arranged in an underground passage, wherein multiple sections of the pipeline 1 are connected by connecting sections 2; an annular support ring 3 is sleeved on the outer wall of the connecting section 2, and support rods 4 extending downward are connected to both sides of the support ring 3, and the lower ends of the support rods 4 are drilled into the stratum of the passage;

[0025] A fixing ring 5 is provided on the outer wall of the middle part of the pipe 1, an upper connecting plate 6 is fixed to the bottom of the fixing ring 5, a lower connecting plate 7 fixed to the channel ground is provided below the upper connecting plate 6, and the upper connecting plate 6 and the lower connecting plate 7 are elastically connected by a support spring 8.

[0026] In this embodiment, bellows 21 are fixed at both ends of the connecting section 2. The bellows 21 are connected to the pipeline 1 through flanges 22. A plurality of connecting shafts 23 are slidably provided between the flanges 22 of the two sections of pipeline 1 connected by the same connecting section 2.

[0027] This allows for a certain amount of movement between the pipe 1 and the connection joint 2, preventing the pipe 1 from vibrating and settling, which could result in a break between the pipe 1 and the connection joint 2.

[0028] In this embodiment, the support ring 3 is divided into two semicircular ring structures, the two sides of which are connected together by a support rod 4. A plurality of support tubes 31 are distributed throughout the support ring 3, and a slider 33 is slidingly arranged in the support tube 31. A support plate 35 is provided in one end of each support tube 31 close to the inner wall of the support ring 3, and an inner spring 34 is provided between the slider 33 and the corresponding support plate 35. A screw 32 rotatably connected to the corresponding support plate 35 is provided in the support tube 31, and the screw 32 is threadedly connected to the slider 33.

[0029] That is to say, by rotating the screw 32, the position of the slider 33 can be adjusted to adjust the elastic force of the inner spring 34 on the support plate 35, so that the support plate 35 fits against the outer wall of the connecting section 2, and the support ring 3 is elastically connected to the connecting section 2, thereby preventing the vibration of the pipeline 1 from being transmitted to the support rod 4, thereby causing the support rod 4 to sink.

[0030] In this embodiment, the support rod 4 is internally threaded with an inner rod 41, and the outer wall of the support rod 4 supports the lower half of the circular ring structure of the support ring 3 through a nut, and the upper part of the inner rod 41 is fitted to the upper half of the circular ring structure of the support ring 3 through another nut, so that when the inner rod 41 is screwed into the support rod 4, the upper and lower semi-circular ring structures of the support ring 3 can be fixed.

[0031] In this embodiment, the side wall at the lower end of the support rod 4 is distributed with multiple through side grooves 42, and a side rod 43 is hinged above each side groove 42. A sliding sleeve 44 is slidingly provided at the position where the inner groove 42 of the support rod 4 is located, and a push rod 45 is hinged between the sliding sleeve 44 and each side rod 43; the bottom of the inner rod 41 can be embedded in the sliding sleeve 44.

[0032] That is to say, when the inner rod 41 is screwed into the support rod 4, it will push the sliding sleeve 44 to slide downward, so that the push rod 45 pushes the side rod 43 to open outward to embed into the formation, thereby improving the compressive resistance of the support rod 4 and slowing down settlement.

[0033] In this embodiment, the inner rod 41 is a hollow rod, the top of which can be connected to a grouting pump. When the side rods 43 are opened outward, grouting is injected into the inner rod 41 by the grouting pump. The grout is ejected from the sliding sleeve 44 through the center toward each of the side grooves 42, thereby hardening the ground beneath the side rods 43 and improving the support effect of the side rods 43.

[0034] In this embodiment, gears 71 are rotatably provided on both sides of the lower connecting plate 7, and racks 72 are fixed on both sides of the upper connecting plate 6, and the racks 72 are meshed with the corresponding gears 71;

[0035] A rotating bar 73 is fixed in each gear 71 , and a sliding groove is provided in the rotating bar 73 . A pull rod 9 is hinged in the support ring 3 , and the pull rod 9 at one end of the pipe 1 is slidably connected to the sliding groove of the rotating bar 73 .

[0036] That is to say, when the channel ground in the middle of the pipeline 1 sinks, the position of the lower connecting plate 7 also drops. At this time, the gear 71 rotates under the pulling force of the pull rod 9, thereby driving the rack 72 and the upper connecting plate 6 to move upward, ensuring that the pipeline 1 is still in a horizontal position and the support spring 8 is always in a compressed state, avoiding the lower connecting plate 7 from being suspended or the middle of the pipeline 1 sagging due to the sinking of the channel ground in the middle of the pipeline 1, and avoiding the support spring 8 from causing excessive elastic force on the middle of the pipeline 1.

[0037] In this embodiment, a fitting plate 74 is provided below the lower connecting plate 7 , and the fitting plate 74 is fixed to the channel floor by bolts. A plurality of adjustment rods 75 are threadedly connected to the lower connecting plate 7 , and the lower ends of the adjustment rods 75 are rotatably connected to the fitting plate 74 .

[0038] That is, the initial height of the fitting plate 74 can be changed by rotating the adjustment rod 75 so that the pipeline 1 is still in a horizontal position and the fitting plate 74 can fit into the channel floor.

[0039] During implementation, the lower end of the support rod 4 is vertically drilled into the channel stratum to the designed depth, and the exposed part needs to be firmly connected to the support ring 3;

[0040] Connect adjacent pipes 1 through the bellows 21 of the connecting joint 2. Align the flanges 22 and insert them into the connecting shaft 23, leaving enough space for movement. Tighten the flanges with bolts to ensure that the pipes 1 can slide slightly to avoid rigid fracture.

[0041] Put the upper and lower semicircular rings of the support ring 3 on the outside of the connecting section 2, align and fix them by aligning the two sides of the support rod 4, screw the inner rod 41 into the support rod 4, tighten the nut to press the upper and lower parts of the support ring 3, and close and lock it;

[0042] During the process of screwing the inner rod 41, the lower end of the inner rod 41 pushes the sliding sleeve 44 downward, and the side rods 43 are opened outward by the hinged action of the push rod 45 and embedded in the formation. A grouting pump is connected to the hollow opening at the top of the inner rod 41, and cement slurry is injected. The slurry flows out from the side groove 42 through the sliding sleeve 44 and fills the formation around the side rod 43. After hardening, it enhances the compressive strength.

[0043] Rotate the screw 32 in the support tube 31 to push the slider 33 to compress the inner spring 34 until the support plate 35 is in close contact with the outer wall of the connecting section 2, ensuring that the support ring 3 is in elastic contact with the connecting section 2 to reduce vibration transmission;

[0044] Put the fixing ring 5 on the middle part of the pipe 1 and fix it with bolts. Rotate the adjusting rod 75 to adjust the height of the fitting plate 74 so that it fits the channel floor. Fix the fitting plate 74 to the channel floor with bolts. At this time, the support spring 8 is placed between the upper connecting plate 6 and the lower connecting plate 7 and is in a compressed state. Under the action of the rack 72 and the gear 71, the length of the support spring 8 is limited and no upward elastic force is generated on the middle part of the pipe 1.

[0045] When the ground settles, the fitting plate 74 and the lower connecting plate 7 move downward, the gear 71 drives the rack 72 and the upper connecting plate 6 to move upward, the supporting spring 8 elastically deforms, and the pipeline 1 remains horizontal.

[0046] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A municipal road underground pipeline anti-settlement construction auxiliary device, characterized in that: The invention comprises a pipeline (1) arranged in an underground passage, wherein multiple sections of the pipeline (1) are connected by connecting joints (2); an annular support ring (3) is provided on the outer wall of the connecting joint (2); support rods (4) extending downward are connected to both sides of the support ring (3); and the lower ends of the support rods (4) are drilled into the stratum of the passage; The outer wall of the middle portion of the pipe (1) is sleeved with a fixing ring (5), an upper connecting plate (6) is fixed to the bottom of the fixing ring (5), a lower connecting plate (7) fixed to the channel ground is provided below the upper connecting plate (6), and the upper connecting plate (6) and the lower connecting plate (7) are elastically connected via a support spring (8); Gears (71) are rotatably provided on both sides of the lower connecting plate (7), and racks (72) are fixed on both sides of the upper connecting plate (6), and the racks (72) are meshed with corresponding gears (71); A rotating bar (73) is fixed in each of the gears (71), and a sliding groove is provided in the rotating bar (73). A pull rod (9) is hinged in the support ring (3), and the pull rod (9) at one end of the pipe (1) is slidably connected to the sliding groove of the rotating bar (73); A bonding plate (74) is provided below the lower connecting plate (7), and the bonding plate (74) is bonded and fixed to the channel ground by bolts. A plurality of adjustment rods (75) are threadedly connected to the lower connecting plate (7), and the lower ends of the adjustment rods (75) are rotatably connected to the bonding plate (74).

2. The auxiliary device for preventing subsidence of underground pipelines in municipal roads according to claim 1, characterized in that: Bellows (21) are fixed at both ends of the connecting joint (2), and the bellows (21) are connected to the pipeline (1) via flanges (22). A plurality of connecting shafts (23) are slidably provided between the flanges (22) of the two sections of pipeline (1) connected by the same connecting joint (2).

3. The auxiliary device for preventing subsidence of underground pipelines in municipal roads according to claim 1, characterized in that: The support ring (3) is divided into two semicircular ring structures, one above the other, with both sides connected together by a support rod (4). A plurality of support tubes (31) are distributed throughout the support ring (3), a slider (33) is slidably provided in the support tube (31), a support plate (35) is provided in one end of each support tube (31) close to the inner wall of the support ring (3), an inner spring (34) is provided between the slider (33) and the corresponding support plate (35), a screw (32) is provided in the support tube (31) and is rotatably connected to the corresponding support plate (35), and the screw (32) is threadedly connected to the slider (33).

4. The auxiliary device for preventing subsidence of underground pipelines in municipal roads according to claim 3 is characterized in that: The support rod (4) is internally threadedly connected to an inner rod (41); the outer wall of the support rod (4) supports the lower half of the circular ring structure of the support ring (3) through a nut; the upper part of the inner rod (41) is fitted to the upper half of the circular ring structure of the support ring (3) through another nut.

5. The auxiliary device for preventing subsidence of underground pipelines in municipal roads according to claim 4 is characterized in that: The side wall of the lower end of the support rod (4) is provided with a plurality of through side grooves (42), and a side rod (43) is hingedly connected above each side groove (42). A sliding sleeve (44) is slidably provided at the position where the inner groove (42) of the support rod (4) is located, and a push rod (45) is hingedly connected between the sliding sleeve (44) and each side rod (43); the bottom of the inner rod (41) can be embedded in the sliding sleeve (44).

6. The auxiliary device for preventing subsidence of underground pipelines in municipal roads according to claim 4, characterized in that: The inner rod (41) is a hollow rod, and the top of the inner rod (41) can be connected to a grouting pump.

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