A trench shoring device and method of use thereof

Abstract

The application discloses a pipe trench supporting device and a using method thereof, and belongs to the technical field of underground pipeline construction. The core of the device comprises symmetrically arranged supporting units and a transverse adjusting assembly connecting the two. The supporting unit is composed of a vertical supporting mechanism, a bottom fixing mechanism and a protective buffer mechanism. The height and width are flexibly adjusted through a second hydraulic cylinder and a first hydraulic cylinder, different pipe trench sizes are adapted, the bottom pulley is convenient to move, and the anchor pile enhances the stability. The protective layer has the functions of buffering and waterproofing. The transverse adjusting assembly provides controllable supporting force through a horizontal hydraulic cylinder and a pressure sensor. The construction efficiency and safety are significantly improved. The using method involves hoisting into position, hydraulic adjustment, anchoring and fixing, real-time monitoring and other steps, and realizes rapid and safe supporting operation in sectional excavation.

Description

Technical Field

[0001] This invention relates to the field of underground pipeline construction technology, specifically to a trench support device and its usage method. Background Technology

[0002] In underground pipeline construction, laying pipelines after excavating trenches is a common procedure. However, the sidewalls of the excavated trenches lose support and are prone to collapse under the weight of the soil, groundwater, or external loads, leading to construction interruptions, increased costs, and safety accidents.

[0003] Existing trench support systems typically include sheet pile support, steel profile support, and soil nailing wall support. Sheet pile support uses hot-rolled sheet piles spliced ​​and inserted into the soil on both sides of the trench. While it provides some soil retention, the fixed rigidity of the sheet piles makes it impossible to dynamically adjust the support strength according to the trench depth and soil pressure. Furthermore, it is prone to tilting and deformation in soft soil strata and has poor adaptability to hard rock strata. Steel profile support involves setting steel columns on both sides of the trench and forming a support frame with transverse steel beams. However, the splicing process is cumbersome, requiring on-site welding or bolting, resulting in low construction efficiency. Additionally, the fixed beam length cannot flexibly adapt to trenches of different widths. Soil nailing wall support involves implanting soil nails into the soil on the trench sidewalls and spraying concrete to form a support surface. It is suitable for slope support but not for trenches with greater depth. Moreover, the long concrete curing period affects the construction progress. Therefore, there is an urgent need for a flexible, adaptable, stable, and efficient trench support solution. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the prior art and provide a trench support device and its usage method.

[0005] This invention provides a trench support device, comprising at least two sets of support units symmetrically arranged on both sides of a trench, and a lateral adjustment assembly connecting the two sets of support units. Each support unit includes a vertical support mechanism, a bottom fixing mechanism, and a protective buffer mechanism. The lateral adjustment assembly includes a pair of lateral support rods and a first hydraulic cylinder. The first hydraulic cylinder is a horizontally arranged hydraulic cylinder positioned between the pair of lateral support rods. Each pair of lateral support rods is hinged to the symmetrically arranged support unit on its opposite side. The lateral support rods are connected to the first hydraulic cylinder via flanges. The vertical support mechanism is correspondingly connected below the pair of lateral support rods and is used to lift the lateral support rods vertically. The bottom fixing mechanism is located at the bottom of the vertical support mechanism and is used to confine the support unit within the trench requiring support. The protective buffer mechanism is located between the vertical support mechanism and the trench sidewall for buffering protection. A pressure sensor is provided between the protective buffer mechanism and the trench, and the pressure sensor is electrically connected to the first hydraulic cylinder.

[0006] Preferably, the vertical support mechanism includes an outer support cylinder, an inner support cylinder, and a second hydraulic cylinder. Both the outer support cylinder and the inner support cylinder are vertically arranged, with the outer support cylinder located at the top and slidably sleeved on the outside of the inner support cylinder. The bottom end of the second hydraulic cylinder is fixedly connected to the side wall of the inner support cylinder, and the telescopic end is hinged to the transverse support rod. The end of the transverse support rod away from the first hydraulic cylinder is hinged to the outer support cylinder.

[0007] Preferably, both the inner support cylinder and the outer support cylinder are horizontally provided with through-limiting holes, and a limiting rod is inserted into the through-limiting holes. When the second hydraulic cylinder installs the inner support cylinder and the outer support cylinder into place, the limiting rod is inserted into the through-limiting holes.

[0008] Preferably, the bottom fixing mechanism includes an anchor pile and a sliding wheel. The anchor pile is a conical structure that is vertically and downwardly fixed to the inner side of the bottom of the inner support cylinder, and the sliding wheel is fixedly connected to the outer side of the inner support cylinder.

[0009] Preferably, the protective buffer mechanism includes a protective buffer layer and a waterproof membrane. The protective buffer layer is made of plywood with a thickness of 1cm to 2cm and is fixed to the outer support cylinder and the inner support cylinder near the trench by bolts. The waterproof membrane is a polymer waterproof membrane with a thickness of 1mm to 2mm and is adhered to the outer surface of the protective buffer layer by adhesive.

[0010] Preferably, the height adjustment range of the vertical support mechanism is 0.5m to 3m; and the width adjustment range of the horizontal adjustment component is 1m to 3m.

[0011] Preferably, several support units are arranged along the length of the trench, and adjacent support units are detachably connected by a linkage group.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Through the synergistic effect of symmetrically arranged support units and lateral adjustment components, active and dynamic support of the trench sidewalls is achieved. The vertical adjustment components lift the lateral adjustment components, enabling rapid adaptation to trenches of different depths and effectively covering the full height of the sidewalls, greatly improving the adaptability and efficiency of the support.

[0014] The bottom fixing mechanism stably confines the support unit within the trench, enhancing anti-overturning stability and ensuring the reliability of the support. The protective buffer mechanism mitigates the impact of the soil on the support structure, improving safety. The lateral adjustment component, through a horizontal hydraulic cylinder and pressure sensor, can precisely control and monitor the lateral support force in real time, allowing the support force to be dynamically adjusted according to geological conditions. This avoids problems of insufficient support or overload, significantly improving the intelligence and overall stability of the support, making it suitable for trench engineering under various complex geological conditions. Attached Figure Description

[0015] Figure 1 This is an overall front view of the present invention.

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a top view of the present invention.

[0018] Figure 4 This is a schematic diagram of the connection structure between the outer support cylinder and the inner support cylinder of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Support unit; 11. Vertical support mechanism; 111. Outer support cylinder; 112. Inner support cylinder; 113. Second hydraulic cylinder; 12. Bottom fixing mechanism; 121. Anchor pile; 122. Sliding wheel; 13. Protective buffer mechanism; 131. Protective buffer layer; 132. Waterproof membrane; 2. Lateral adjustment assembly; 21. First hydraulic cylinder; 22. Lateral support rod; 3. Through-limit hole; 4. Limiting rod; 5. Linkage group. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-4To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art.

[0021] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams.

[0022] The present invention provides a trench support device, such as... Figures 1-3 As shown, the system includes at least two sets of support units 1 symmetrically arranged on both sides of the trench, and a lateral adjustment assembly 2 connecting the two sets of support units 1. Each support unit 1 includes a vertical support mechanism 11, a bottom fixing mechanism 12, and a protective buffer mechanism 13. The lateral adjustment assembly 2 includes a pair of lateral support rods 22 and a first hydraulic cylinder 21. The first hydraulic cylinder 21 is a horizontally arranged hydraulic cylinder positioned between the pair of lateral support rods 22. The pair of lateral support rods 22 are hinged to the symmetrically arranged support units 1 on opposite sides. 22 is connected to the first hydraulic cylinder 21 via a flange; the vertical support mechanism 11 is connected to the lower part of a pair of horizontal support rods 22 and is used to lift the horizontal support rods 33 in the vertical direction; the bottom fixing mechanism 12 is set at the bottom of the vertical support mechanism 11 and is used to confine the support unit 1 within the trench that needs to be supported; the protective buffer mechanism 13 is set between the vertical support mechanism 11 and the side wall of the trench and is used for buffer protection. A pressure sensor is provided between the protective buffer mechanism 13 and the trench, and the pressure sensor is electrically connected to the first hydraulic cylinder 21.

[0023] The vertical support mechanism 11 includes an outer support cylinder 111, an inner support cylinder 112, and a second hydraulic cylinder 113. Both the outer support cylinder 111 and the inner support cylinder 112 are vertically arranged, with the outer support cylinder 111 located at the top and slidably sleeved on the outside of the inner support cylinder 112. The bottom end of the second hydraulic cylinder 113 is fixedly connected to the side wall of the inner support cylinder 112, and the telescopic end is hinged to the transverse support rod 22. The end of the transverse support rod away from the first hydraulic cylinder 21 is hinged to the outer support cylinder 111.

[0024] In this embodiment, the active and dynamic support of the trench sidewall is achieved through the synergistic effect of the symmetrically arranged support unit 1 and the lateral adjustment component 2. The vertical adjustment component is driven by a hinged hydraulic cylinder, which makes the outer support cylinder 111 flexible in raising and lowering, and can quickly adapt to trenches of different depths, effectively covering the full height of the sidewall, greatly improving the adaptability and efficiency of the support.

[0025] The bottom fixing mechanism 12 stably confines the support unit 1 within the trench, enhancing its anti-overturning stability and ensuring the reliability of the support. The protective buffer mechanism 13 mitigates the impact of the soil on the support structure, improving safety. The lateral adjustment component 2, through a horizontal hydraulic cylinder and pressure sensor, can precisely control and monitor the lateral support force in real time, allowing the support force to be dynamically adjusted according to geological conditions. This avoids problems of insufficient support or overload, significantly improving the intelligence and overall stability of the support, making it suitable for trench engineering under various complex geological conditions.

[0026] Preferred, such as Figures 1-4 As shown, both the inner support cylinder 112 and the outer support cylinder 111 are horizontally provided with through-limiting holes 3. A limiting rod 4 is inserted into the through-limiting holes 3. When the second hydraulic cylinder 113 installs the inner support cylinder 112 and the outer support into place, the limiting rod 4 is inserted into the through-limiting holes 3, so that the inner support cylinder 112, the outer support cylinder 111, the second hydraulic cylinder 113 and the transverse support rod form a triangular support body.

[0027] In this embodiment, by inserting the limiting rod 4, the adjustable structure, originally supported solely by the hydraulic cylinder, is instantly transformed into a rigid triangular stabilizer composed of an inner support cylinder 112, an outer support cylinder 111, and a transverse support rod. This transformation greatly enhances the stability and load-bearing capacity of the overall structure, optimizes the force distribution to more efficient axial force transmission through the rods, and provides fail-safe protection for the hydraulic system through mechanical locking, significantly improving safety.

[0028] Preferred, such as Figure 1 As shown, the bottom fixing mechanism 12 includes an anchor pile 121 and a sliding wheel 122. The anchor pile 121 is a conical structure that is vertically fixed to the inner side of the bottom of the inner support cylinder 112, and the sliding wheel 122 is fixed to the outer side of the inner support cylinder 112.

[0029] In this embodiment, the mobility and fixing efficiency of the device are optimized. The bottom fixing mechanism 12 integrates a sliding wheel 122 and an anchor pile 121, making the movement and anchoring operations more convenient. The conical anchor pile 121 extends vertically downward, with low resistance and strong anchoring force when inserted into the soil, which can quickly achieve stable support, and is particularly suitable for soft soil or loose strata.

[0030] Preferred, such as Figure 1 As shown, the protective buffer mechanism 13 includes a protective buffer layer 131 and a waterproof membrane 132. The protective buffer layer 131 is made of plywood with a thickness of 1cm to 2cm and is fixed to the side surface of the outer support cylinder 111 and the inner support cylinder 112 near the trench by bolts. The waterproof membrane 132 is a polymer waterproof membrane with a thickness of 1mm to 2mm and is pasted to the outer surface of the protective buffer layer 131 by adhesive.

[0031] This embodiment provides excellent buffering and waterproofing performance. Using a specific thickness of wood or plywood as a buffer layer effectively absorbs the impact of sidewall soil pressure, preventing structural damage. The polymer waterproof membrane 132 forms a continuous waterproof barrier, preventing groundwater infiltration and maintaining soil stability. Fixing with bolts or adhesives ensures a secure and well-sealed protective layer, significantly improving the durability of the support and its adaptability to complex hydrogeological conditions.

[0032] Preferred, such as Figure 1 As shown, the height adjustment range of the vertical support mechanism 11 is 0.5m to 3m; the width adjustment range of the horizontal adjustment component 2 is 1m to 3m.

[0033] In this embodiment, the height adjustment range of the vertical support mechanism 11 covers shallow trenches to deep trenches from 0.5m to 3m, and the width adjustment range meets the needs of different pipe diameters from 1m to 3m, which can handle most pipe trench projects, reducing the types of equipment configuration. The flexible adjustment capability of the horizontal adjustment component 2 greatly improves the versatility and economy of the equipment, and is suitable for various construction scenarios such as urban pipe networks and water conservancy projects.

[0034] Preferred, such as Figures 1-3 As shown, several support units 1 are arranged along the length of the trench, and adjacent support units 1 are detachably connected by a connecting rod group 5.

[0035] In this embodiment, the support unit 1 is provided with several detachable connections via connecting rod groups 5 along the length of the trench. During installation, adjacent support components are installed via the connecting rod groups 5, making it convenient and quick to use.

[0036] The method of using the trench support device of the present invention is as follows:

[0037] First, construction preparation and preliminary positioning are carried out. The trench to be constructed is divided into several sections, and excavation is carried out sequentially. Two sets of support units 1 are hoisted to both sides of the trench in the current construction section, and their positions are adjusted so that the sliding wheels 122 at the bottom can be moved easily, and the protective buffer mechanism 13 is initially brought close to the sidewall of the trench. Then, the second hydraulic cylinder 113 is activated to drive the inner support cylinder 112 to rise smoothly from the outer support cylinder 111 until its top height completely covers the entire vertical surface of the trench sidewall, preparing for subsequent lateral support.

[0038] Next, lateral tensioning and final fixation are performed. The first hydraulic cylinder 21, connecting the two lateral support rods 22, is activated, extending its piston rod to push the two side support units 1 inward, applying active support force to the trench sidewalls. During this process, the pressure sensor on the lateral adjustment assembly 2 monitors the support force in real time. When the value reaches a preset safety threshold based on the site geological conditions, the first hydraulic cylinder 21 is immediately stopped and locked to ensure stable and reliable support force. Finally, the bottom fixing mechanism 12 is operated to vertically insert the retractable anchor pile 121 into the soil at the bottom of the trench, thereby greatly enhancing the overturning resistance of the support unit 1 and completing the final fixation of the device.

[0039] Finally, dynamic monitoring and cyclical use are implemented. During pipeline laying, the support status is monitored in real time throughout the process using pressure sensors on the device. If any data anomalies are detected, fine-tuning can be quickly performed using the first hydraulic cylinder 21 to achieve dynamic support. After all work in the current construction section is completed, the anchor pile 121 is first retracted, and then the pressure of the first hydraulic cylinder 21 and the second hydraulic cylinder 113 is appropriately reduced to release the support on the trench sidewall. Using the bottom sliding wheel 122, the entire support unit 1 is easily moved to the next construction section, and the above steps are repeated, achieving efficient turnover and cyclical use of the equipment, significantly improving overall construction efficiency.

[0040] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe trench support device characterized by comprising: The supporting unit comprises a vertical supporting mechanism, a bottom fixing mechanism and a protective buffering mechanism. The horizontal adjusting assembly comprises a pair of horizontal supporting rods and a first hydraulic cylinder, the first hydraulic cylinder is a horizontal hydraulic cylinder arranged horizontally, the first hydraulic cylinder is arranged between the pair of horizontal supporting rods, and the pair of horizontal supporting rods are respectively hinged to the symmetrically arranged supporting units on the sides away from each other. The vertical supporting mechanism is correspondingly connected below the pair of horizontal supporting rods, and is used for lifting the horizontal supporting rods in the vertical direction. The bottom fixing mechanism is arranged at the bottom end of the vertical supporting mechanism, and is used for limiting the supporting unit in the trench to be supported. The protective buffering mechanism is arranged between the vertical supporting mechanism and the side wall of the trench, and is used for buffering and protection. The inner supporting cylinder and the outer supporting cylinder are both vertically arranged, the outer supporting cylinder is arranged at the upper part and is slidably sleeved outside the inner supporting cylinder, the second hydraulic cylinder is fixedly connected to the side wall of the inner supporting cylinder at the bottom end, and is hingedly connected to the horizontal supporting rod at the telescopic end. The inner supporting cylinder and the outer supporting cylinder are both horizontally provided with through limiting holes, and a limiting rod is inserted into the through limiting hole. The bottom fixing mechanism comprises an anchor pile and a sliding wheel, the anchor pile is a conical structure fixedly connected to the inner side of the bottom of the inner supporting cylinder vertically downward, and the sliding wheel is fixedly connected to the outer side of the inner supporting cylinder.

2. A trench shoring device as claimed in claim 1, characterised in that The protective buffering mechanism comprises a protective buffering layer and a water-impermeable film, the protective buffering layer is arranged as a plywood with a thickness of 1cm-2cm, and is fixed to the side surfaces of the outer supporting cylinder and the inner supporting cylinder close to the trench by bolts; the water-impermeable film is a high-molecular waterproof roll material with a thickness of 1mm-2mm, and is adhered to the outer surface of the protective buffering layer by an adhesive.

3. A trench shoring device as claimed in claim 1, wherein, The height adjustment range of the vertical supporting mechanism is 0.5m-3m, and the width adjustment range of the horizontal adjusting assembly is 1m-3m.

4. A trench shoring device as claimed in claim 1, wherein, The supporting units are arranged along the length direction of the trench, and the adjacent supporting units are detachably connected through connecting rods.

5. The method of using a pipe trench shoring device according to any one of claims 1 to 4, wherein, The method comprises the following steps: Divide the trench into several construction sections for segmented excavation; Lift two groups of supporting units to the two sides of the trench of the current construction section, connect the two groups of supporting units, make the protective buffering mechanism closely adhere to the side wall of the trench, and lift the horizontal supporting rod through the vertical supporting mechanism until the top end height is consistent with the height of the side wall of the trench. The first hydraulic cylinder is started to tension the horizontal support rod, the horizontal support force is monitored through the pressure sensor, and when the support force reaches a value preset according to the geological conditions, the first hydraulic cylinder is stopped and locked; the limiting rod is inserted into the through limiting hole to make the vertical support mechanism, the second hydraulic cylinder and the horizontal support rod into a triangular support body; The bottom fixing mechanism is inserted into the soil at the bottom of the pipe trench to complete the final fixation of the support unit; The pipeline laying operation is performed, and the state of the support device is monitored in real time through the pressure sensor, and if an abnormality occurs, the first hydraulic cylinder is used for dynamic adjustment; After the current construction section operation is completed, the bottom fixing mechanism is withdrawn, and the support unit is moved to the next construction section for repeated use.

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