An underground pipe network trench support device

Abstract

The utility model discloses a kind of underground pipe network trench supporting devices, including trench foundation pit, the inside of trench foundation pit is distributed with multiple groups of matched steel sheet piles, the two sides of the outer side wall of multiple steel sheet piles are respectively equipped with matched guide slot and connecting lug, it is tightly spliced through guide slot and connecting lug between adjacent steel sheet piles, facilitate actual construction and assembly, when assembling, by connecting lug on the steel sheet pile between adjacent is slid along guide slot, and insert into underground, improve the connection tightness between steel sheet pile;The utility model makes steel sheet pile form whole through the tight splicing of guide slot and connecting lug, and is provided with U-shaped groove and reinforcing block in inside, improve the lateral bearing capacity of supporting structure, simultaneously utilize the linkage of hydraulic rod and adjustable transverse support plate, can be according to the real-time adjustment supporting strength and side slope fitting angle according to trench depth, to avoid frequent replacement specification, solve the problem that traditional scheme is poor in adaptability, low efficiency.

Description

Technical Field

[0001] This utility model relates to the field of underground pipeline construction technology, specifically to an underground pipeline trench support device. Background Technology

[0002] In the construction of underground pipe networks (such as rainwater pipes, sewage pipes, water supply pipes, etc.), trench excavation is one of the key procedures. Due to the complex geological conditions of the construction site and the different depths of the trenches (such as less than 2m, 2-3m, 3-4m, etc.), improper support can easily lead to trench collapse, which not only affects construction safety but may also damage existing pipelines in the vicinity (such as telecommunications and power cables, water supply and drainage pipelines, etc.).

[0003] Existing trench support systems mostly employ single-specification sheet piles or simple support structures, which have significant drawbacks: Firstly, they lack adaptability, failing to flexibly adjust support strength and slope angle according to trench depth. Different support structures of varying specifications are required for trenches of different depths, leading to low construction efficiency. Secondly, they lack stability; traditional sheet piles have loose connections and limited lateral bearing capacity, making them prone to displacement or deformation in soft soil or deep trenches. Furthermore, they inadequately protect existing pipelines, making it difficult to accurately control the safe distance from existing pipelines, and easily causing pipeline damage due to soil disturbance during support structure installation. Therefore, a trench support device for underground pipeline networks is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an underground pipeline trench support device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an underground pipeline trench support device, comprising a trench pit, with multiple sets of matching sheet piles distributed on the inner side of the trench pit. Matching guide grooves and connecting protrusions are respectively provided on both sides of the outer walls of the sheet piles. Adjacent sheet piles are tightly spliced ​​together through the guide grooves and connecting protrusions. Multiple transverse support plates are spaced apart on opposite sides of a corresponding set of sheet piles. Both ends of the multiple transverse support plates are rotatably connected to a first fixing seat via a first columnar pin for easy and quick disassembly. The outer walls of the multiple first fixing seats are connected to the outer walls of the corresponding sheet piles via first bolts. A hydraulic rod is rotatably connected to the bottom of one set of transverse support plates. The output ends of the multiple hydraulic rods are rotatably connected to the outer walls of the corresponding sheet piles. A locking bolt is threaded onto the outer wall of the inner side of one sheet pile. A measuring ruler is rotatably connected to the outer wall of the locking bolt. A detection probe is provided at the end of the outer wall of the measuring ruler away from the locking bolt for detecting existing underground pipelines for easy avoidance.

[0006] Preferably, the output ends of the plurality of hydraulic rods are rotatably connected to a second fixed seat via a second columnar pin, and the plurality of second fixed seats are connected to the outer wall of the corresponding steel sheet pile via a second bolt.

[0007] Preferably, each of the transverse support plates consists of two mutually symmetrical connecting seats, and an adjusting screw is threadedly connected to the common internal thread of a set of connecting seats. A screw block is fixedly connected to the middle position of the adjusting screw wall to adjust the fit between the sheet pile and the slope.

[0008] Preferably, buffer pads are provided on the contact surfaces of the plurality of first and second fixing seats and the sheet pile, and the plurality of buffer pads are made of rubber material.

[0009] Preferably, each of the sheet piles has a U-shaped groove inside, and multiple reinforcing blocks are evenly connected inside the U-shaped grooves to enhance the compressive strength of the sheet pile slope protection.

[0010] Preferably, each of the sheet piles is equipped with a lifting lug at the top for easy assembly and transport.

[0011] Preferably, the cutting edge of the lower end of the plurality of sheet piles is wedge-shaped, with a cutting edge inclination angle of 30°-45°, to reduce the resistance when inserted into the soil.

[0012] Preferably, the measuring ruler is composed of multiple hollow sleeves nested in sequence, and the multiple hollow sleeves are connected by damping hinges, which can be folded and stored or unfolded along the length direction.

[0013] Preferably, the measuring ruler has millimeter-level graduations on its surface for reading the distance between the sheet pile and the existing pipeline, and the measuring ruler is positioned at the middle of the sheet pile in the height direction.

[0014] Preferably, a protective pad is threadedly connected to the outer wall of the sheet pile near the contact surface with the existing pipeline via a third bolt.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model forms a whole steel sheet pile by tightly splicing the guide groove and the connecting protrusion, and sets a U-shaped groove and reinforcing block inside to improve the lateral bearing capacity of the support structure. At the same time, by using the linkage between the hydraulic rod and the adjustable transverse support plate, the support strength and slope fitting angle can be adjusted in real time according to the trench depth, thereby avoiding frequent changes in specifications, improving construction efficiency, and solving the problems of poor adaptability and low efficiency of traditional solutions.

[0017] 2. The device is equipped with an electromagnetic induction detection probe and a rotatable measuring ruler, which can accurately locate the position of existing pipelines before the support is installed. Combined with the measuring ruler readings, the safe distance between the sheet piles and the pipelines is controlled to prevent damage to cables and water supply and drainage pipelines caused by soil squeezing or vibration of the support. The rubber buffer pad and detachable pin connection further reduce the impact of construction, achieve "zero disturbance" protection, reduce the cost of later maintenance and compensation, and make up for the deficiencies of insufficient protection of existing pipelines.

[0018] 3. The wedge-shaped 30°-45° cutting edge and top lifting lug design allow for quick insertion and hoisting of sheet piles, enabling a single person to position a single pile; the transverse support plate, hydraulic rod, and fixing seat are all connected by bolts and pins, eliminating the need for welding, and can be reused after disassembly, improving turnover rate; the overall components are standardized and lightweight, reducing transportation and storage costs, and meeting the requirements of green construction and sustainable development. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of the present utility model;

[0022] Figure 4 This is a side view of the structure of this utility model.

[0023] Explanation of icon numbers:

[0024] 1. Sheet pile; 2. Guide groove; 3. Connecting protrusion; 4. Transverse support plate; 5. First fixed seat; 6. Locking bolt; 7. Measuring ruler; 8. Detection probe; 9. Hydraulic rod; 10. Second fixed seat; 11. U-shaped groove; 12. Reinforcing block; 13. Adjusting screw; 14. Screw block; 15. Buffer pad; 16. Lifting lug; 17. Protective pad. Detailed Implementation

[0025] 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 protection scope of the present utility model.

[0026] Please see Figures 1 to 4This utility model provides an underground pipeline trench support device, including a trench pit. Multiple sets of matching sheet piles 1 are distributed on the inner side of the trench pit. Matching guide grooves 2 and connecting protrusions 3 are respectively provided on both sides of the outer walls of the sheet piles 1. Adjacent sheet piles 1 are tightly spliced ​​together through the guide grooves 2 and connecting protrusions 3, facilitating actual construction and assembly. During assembly, the connecting protrusions on adjacent sheet piles 1 are slid into the guide grooves 2 and inserted into the ground, improving the tightness of the connection between the sheet piles 1 and simultaneously increasing the lateral bearing capacity. This makes the sheet piles 1 less prone to displacement or deformation during soft soil or deep trench construction, improving the support capacity. Multiple transverse support plates 4 are distributed at intervals on the opposite side of a set of sheet piles 1. The transverse support plates 4 are spaced apart relative to the channels in the trench pit and arranged according to the actual situation. Both ends of multiple transverse support plates 4 are rotatably connected to first fixed seats 5 via first columnar pins for easy and quick disassembly. The outer walls of multiple first fixed seats 5 are connected to the outer walls of the corresponding steel sheet piles 1 via first bolts. The bottom of one set of transverse support plates 4 is rotatably connected to hydraulic rods 9. The output ends of multiple hydraulic rods 9 are rotatably connected to the outer walls of the corresponding steel sheet piles 1. It should be noted that hydraulic rods 9 are installed at certain intervals of transverse support plates 4 in the trench foundation pit channel. The extension and retraction of hydraulic rods 9 are controlled by a hydraulic pump, thereby pushing the steel sheet piles 1 on both sides to retract inward or outward. In actual construction, the support strength and the fit with the slope angle can be flexibly adjusted according to the actual trench foundation pit conditions, improving the overall stability of the support without the need to replace support structures of different specifications, thus improving construction efficiency.

[0027] like Figure 2 As shown, a locking bolt 6 is threaded onto the outer wall of the inner side of one of the sheet piles 1. A measuring ruler 7 is rotatably connected to the outer wall of the locking bolt 6. A detection probe 8 is located at the end of the outer wall of the measuring ruler 7 away from the locking bolt 6. This probe is used to detect existing underground pipelines. It should be noted that the detection probe 8 is an electromagnetic induction sensor. This sensor detects the presence of cables or similar devices nearby, and the sensor's response data is viewed through external equipment. This allows for precise control of the safe distance between the sheet pile 1 and existing pipelines. Combined with the measuring ruler 7, this facilitates the safe assembly of the sheet pile 1 and prevents damage to pipelines caused by soil disturbance during the installation of the support structure. The external equipment refers to a signal receiving and display terminal connected to the electromagnetic induction sensor, used to display detection data in real time and assist operators in determining the presence of underground pipelines.

[0028] Figure 3 and Figure 4As shown, in this embodiment, the output ends of multiple hydraulic rods 9 are rotatably connected to second fixed seats 10 via second columnar pins. Multiple second fixed seats 10 are connected to the outer side wall of the corresponding steel sheet pile 1 via second bolts. Multiple first fixed seats 5 and second fixed seats 10 are provided with buffer pads 15 on their contact surfaces with the steel sheet pile 1. Multiple buffer pads 15 are made of rubber material.

[0029] like Figure 2 and Figure 3 As shown, in this embodiment, each transverse support plate 4 is composed of two mutually symmetrical connecting seats. An adjusting screw 13 is connected to the common thread inside a set of connecting seats. A screw block 14 is fixedly connected to the middle position of the adjusting screw 13. In actual construction, by rotating the screw block 14, the connecting seats at both ends of the adjusting screw 13 are controlled to move relative to or in opposite directions, thereby promoting the fit between the corresponding rotating steel sheet pile 1 and the slope and improving the stability of the slope protection effect.

[0030] like Figure 4 As shown, in this embodiment, each of the multiple sheet piles 1 has a U-shaped groove 11 inside, and multiple reinforcing blocks 12 are evenly connected inside the multiple U-shaped grooves 11 to enhance the compressive strength of the sheet pile 1 slope protection. In this embodiment, each of the multiple sheet piles 1 has a lifting lug 16 connected to its top for easy assembly and lifting. The cutting edge at the lower end of the multiple sheet piles 1 is wedge-shaped with a cutting edge inclination angle of 30°-45°, which helps to reduce the resistance when inserting into the soil and facilitates the actual insertion of the sheet piles 1 into the ground.

[0031] like Figure 2 and Figure 4 As shown, the measuring ruler 7 has millimeter-level graduations on its surface for accurately reading the distance between the sheet pile 1 and the existing pipeline. The measuring ruler is positioned at the center of the sheet pile 1 in the height direction. The measuring ruler 7 is composed of multiple hollow sleeves nested together, and the hollow sleeves are connected by damping hinges. It can be folded and stored or unfolded along its length. The foldable measuring ruler 7 is made of lightweight, high-strength alloy material. When unfolded, the total length is controlled according to the safety distance required for the protection of the existing pipeline to ensure the construction of the sheet pile 1. Furthermore, the measuring ruler 7 in the folded state is convenient for transportation, storage, and operation in narrow trenches. When unfolded, the self-locking hinge structure maintains rigidity, ensuring that the ruler does not bend or deform during the measurement process, thus meeting the requirements for accurate control of the safety distance to the existing pipeline during construction.

[0032] like Figure 2 As shown, a protective pad 17 is threadedly connected to the outer wall of the sheet pile 1 and the existing pipeline via a third bolt to reduce the vibration impact of the sheet pile 1 on the existing pipeline.

[0033] The working principle of the device is as follows: During construction, several sheet piles 1 are first hoisted to the edge of the trench. Using the top lifting lugs 16 in conjunction with the lifting equipment, the wedge-shaped cutting edge is pressed into the soil at an angle of 30°-45° to reduce the penetration resistance. Adjacent sheet piles 1 are slid and locked one by one with the connecting protrusions 3 through the guide grooves 2 to form a continuous and sealed retaining wall.

[0034] Reinforcing blocks 12 are evenly distributed inside the U-shaped groove 11, which significantly improves the overall lateral stiffness. Subsequently, according to the trench depth and soil quality, transverse support plates 4 are installed between the two opposite steel sheet piles 1 at the designed spacing. First, the first fixing seat 5 is fixed to the inner wall of the steel sheet pile 1 with the first bolt. Then, the two ends of the transverse support plate 4 are hinged to the first fixing seat 5 through the first columnar pin to achieve quick assembly. The transverse support plate 4 consists of two connecting seats and adjusting screws 13. Rotating the screw block 14 can synchronously extend and retract, accurately adjusting the fit between the steel sheet pile 1 and the slope.

[0035] The buffer pad 15 absorbs impact and avoids local deformation. To enhance overall stability, a hydraulic rod 9 is hinged below the transverse support plate 4 of the key span. The output end of the hydraulic rod 9 is connected to the outer wall of the sheet pile 1 through the second columnar pin, the second fixed seat 10 and the second bolt. During construction, by connecting to and starting the hydraulic pump station, the hydraulic rod 9 can be driven to extend and retract synchronously or in stages to dynamically compensate for changes in soil pressure and prevent displacement of the deep trench in soft soil. During construction, the locking bolt 6 is screwed into the inner side of the sheet pile 1, the measuring ruler 7 is unfolded, and the electromagnetic induction detection probe 8 at the end scans along the designed path to detect existing cables or pipelines in real time. The insertion position of the sheet pile 1 and the stroke of the hydraulic rod 9 are finely adjusted according to the reading to ensure a safe clearance from existing facilities. When dismantling, simply pull out the pin and loosen the bolt, and all components can be separated without welding and reused.

[0036] Meanwhile, the protective pad 17 can be used to protect the surface of existing pipelines close to the sheet pile 1 during construction, preventing damage to the existing pipelines. The measuring ruler 7 can be folded and stored, making it convenient for transportation, storage, and operation in narrow trenches. When unfolded, it maintains rigidity through a hinged self-locking structure, ensuring that the ruler does not bend or deform during measurement, meeting the requirements for precise control of the safe distance to existing pipelines during construction. At the same time, the millimeter-level scale on the measuring ruler 7 allows for precise observation of the distance between the existing pipelines and the sheet pile 1, improving the construction and installation accuracy of the sheet pile 1 and further preventing damage to the existing pipelines.

[0037] Contents not described in detail in this application are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An underground pipeline trench support device, comprising a trench foundation pit, characterized in that: Multiple sets of matching sheet piles (1) are distributed on the inner side of the trench foundation pit. Matching guide grooves (2) and connecting protrusions (3) are provided on both sides of the outer side wall of the multiple sheet piles (1). Adjacent sheet piles (1) are tightly spliced ​​together by the guide grooves (2) and the connecting protrusions (3). Multiple transverse support plates (4) are distributed at intervals on the opposite side of a set of sheet piles (1). Both ends of the multiple transverse support plates (4) are rotatably connected to a first fixed seat (5) by a first columnar pin. The outer side wall of the multiple first fixed seats (5) is connected to the outer side wall of the corresponding sheet pile (1) by a first bolt. The bottom of one set of transverse support plates (4) is rotatably connected to a hydraulic rod (9). The output ends of the multiple hydraulic rods (9) are rotatably connected to the outer side wall of the corresponding sheet pile (1). It also includes a locking bolt (6) threaded inside one of the sheet piles (1), a measuring ruler (7) rotatably connected to the outer wall of the locking bolt (6), and a detection probe (8) provided at the end of the outer wall of the measuring ruler (7) away from the locking bolt (6) for detecting existing underground pipelines.

2. The underground pipeline trench support device according to claim 1, characterized in that: The output ends of the plurality of hydraulic rods (9) are rotatably connected to a second fixed seat (10) via a second columnar pin, and the plurality of second fixed seats (10) are connected to the outer wall of the corresponding steel sheet pile (1) via a second bolt.

3. The underground pipeline trench support device according to claim 1, characterized in that: Each of the transverse support plates (4) consists of two symmetrical connecting seats. A common threaded connection is made to the interior of a set of connecting seats. A screw block (14) is fixedly connected to the middle position of the wall of the adjusting screw (13) to adjust the fit between the sheet pile (1) and the slope.

4. The underground pipeline trench support device according to claim 2, characterized in that: Each of the first fixing seat (5) and the second fixing seat (10) is provided with a buffer pad (15) on the contact surface with the sheet pile (1), and the buffer pads (15) are all made of rubber material.

5. The underground pipeline trench support device according to claim 1, characterized in that: Each of the sheet piles (1) has a U-shaped groove (11) inside, and multiple reinforcing blocks (12) are evenly connected inside the U-shaped grooves (11) to enhance the compressive strength of the sheet piles (1) slope protection.

6. The underground pipeline trench support device according to claim 1, characterized in that: Each of the sheet piles (1) is connected to a lifting lug (16) at its top.

7. The underground pipeline trench support device according to claim 1, characterized in that: The lower ends of the plurality of sheet piles (1) form wedge-shaped cutting edges, and the cutting angle formed by the intersection of the two inclined surfaces of the wedge-shaped cutting edges is 30° to 45°.

8. The underground pipeline trench support device according to claim 1, characterized in that: The measuring ruler (7) is composed of multiple hollow sleeves nested in sequence. The multiple hollow sleeves are connected by damping hinges and can be folded and stored or unfolded along the length direction.

9. The underground pipeline trench support device according to claim 8, characterized in that: The measuring ruler (7) has millimeter-level graduations on its surface, which are used to read the distance between the sheet pile (1) and the existing pipeline. The measuring ruler is set at the middle position in the height direction of the sheet pile (1).

10. The underground pipeline trench support device according to claim 1, characterized in that: A protective pad (17) is threadedly connected to the outer wall of the steel sheet pile (1) and the existing pipeline by a third bolt.

Images