Gas pipeline equipment with integrated trench excavation and installation and construction method thereof

Abstract

The invention discloses a gas pipeline device with integrated trench excavation and installation and a construction method thereof. The device comprises a power component (1) providing traction, a support component (2) connected to the end thereof and having a supporting function, the support component (2) comprising a main beam (201), an excavation component (3) for layered excavation of soil layers and a laying component (4) for smoothly laying a pipeline into a trench are fixedly mounted on the support component, the excavation component comprising a telescopic support (31) and a casing arc blade group (32), the laying component (4) comprising a telescopic support (31) and a half casing group (41), the inclination angle and height of the casing arc blade group (32) and the half casing group (41) are controlled by the telescopic support (31), the trench is formed by layered excavation of soil layers, and the curvature of the pipeline is controlled, so that the pipeline is smoothly laid into the trench. The invention realizes simultaneous excavation and laying of pipeline trenches in non-rocky areas, greatly shortens construction time, and ensures pipeline laying quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas pipeline laying, and more specifically, relates to a gas pipeline equipment with integrated trench excavation and installation and a construction method thereof. Background Art

[0002] With the acceleration of urbanization, the construction of urban gas pipelines has become an increasingly important part of urban infrastructure, and the installation projects of outdoor gas pipelines have gradually increased. In order to reduce the impact on residents, the construction speed of municipal gas pipeline projects is very critical during the construction process. The natural gas in the gas pipeline is flammable and explosive. Once the pipeline laying quality does not meet the standards, such as leakage, corrosion, breakage and other problems, it is very easy to cause serious safety accidents such as fire and explosion, which seriously threaten public safety and the safety of people’s lives and property. Therefore, the quality of gas pipeline laying is particularly important.

[0003] There are many gas pipeline laying technologies in the prior art, such as the patent document with publication number CN202010053016.4. The present invention discloses an auxiliary vehicle for open-cut direct burial of gas pipelines and its construction method. The invention is to dig a trench; sprinkle a lime line at the bottom of the trench and along the center line of the trench length; place the pipeline in the trench by the auxiliary vehicle; move the auxiliary vehicle along the trench to place all the pipelines in the trench; weld all the pipelines; fill the trench with soil; and compact the backfill soil on the trench to complete the pipeline laying in six steps. This method has the effect of facilitating the placement of the pipeline in the trench while ensuring the placement of the pipeline. However, this method has great limitations on the length of the laid pipeline, and is suitable for pipelines with shorter lengths when laying the trench. Another example is the patent document with publication number CN202111014558.1, which discloses a pressure pipeline laying device for urban gas projects. In the device of the present invention, the rotating rod of the fixing component rotates in the inner cavity of the installation hole, the guide block slides in the inner cavity of the guide groove, and the rotating block rotates in the inner cavity of the opening, which plays a compensating role for the fixed pipeline, so that the laying equipment will not cause squeezing of the pipeline when moving in uneven areas, thereby protecting the pipeline and extending the service life of the pipeline. However, this method has a large limitation on the pipeline diameter and is suitable for pipelines with smaller diameters.

[0004] The existing technology first excavates the trench, then welds the pipes, and finally uses mechanical equipment to place the pipes directly into the trench. During the process of burying the pipes, the pipe welding joints and the pipes are easily displaced to varying degrees in different areas, which can easily cause local tension and compression, resulting in damage to the pipes. The quality cannot be guaranteed, which may lead to a lot of rework and repair work in subsequent construction. Summary of the Invention

[0005] In response to the above defects or improvement needs of the prior art, the present invention provides a gas pipeline equipment with integrated trench excavation and installation and a construction method thereof. The power component, bracket component, excavation component and laying component are assembled together above the pipeline. The power component drives the excavation component to excavate the soil layer in layers with blades of different cross-sectional sizes and depths under the traction of the power component. The pipeline bends downward under the action of its own gravity. The gas pipeline is flexibly fixed by the laying component, and the curvature of the pipeline is controlled to enable the pipeline to be smoothly laid into the trench. The equipment has the function of simultaneously excavating the trench and pulling the pipeline into the trench, so that the two steps of trench excavation and laying in non-rocky areas can be carried out simultaneously, greatly shortening the construction time.

[0006] To achieve the above-mentioned object, according to one aspect of the present invention, there is provided a gas pipeline equipment with integrated trench excavation and installation, comprising a power assembly providing traction, a support assembly connected to the end of the power assembly to play a supporting role, an excavation assembly fixedly mounted on the support assembly for layered excavation of soil layers, and a laying assembly fixedly mounted on the support assembly for smoothly laying the pipeline into the trench; wherein,

[0007] The power assembly includes a drive device and mechanical fixing bolts and reinforcing steel plates for connecting the components;

[0008] The support assembly includes a main beam, a support frame fixed to the main beam by mechanical fixing bolts in four horizontal directions, and support wheels installed on both sides of the bottom of the support frame, which mainly play a supporting and stabilizing role;

[0009] The excavation assembly includes multiple sets of casing arc blade groups and retractable brackets connected to the top ends thereof and controlling the inclination angle and height thereof; the retractable bracket includes a retractable main rod, one end of which is connected to the main beam of the support assembly via the mechanical fixing bolts and the reinforcing steel plate, and the other end of which is connected to a retractable secondary rod 1 and a fixed-length secondary rod 2 via a main hinge; the casing arc blade group includes arc blades with trapezoidal cross-sections, and the cross-sectional dimensions of the arc blades of each set of casing arc blade groups at grooves of different depths are different, so as to be used for layered excavation of soil layers;

[0010] The laying assembly includes a half-sleeve group and a retractable bracket connected to the top end thereof and controlling the tilt angle and height thereof, so as to adapt to the laying of pipelines with different bending requirements.

[0011] Furthermore, the power assembly also includes a crawler chassis for increasing the contact area with the ground to adapt to different ground environments, and the height of the crawler chassis from the ground can be adjusted to adapt to pipes of different diameters.

[0012] Furthermore, the bracket assembly also includes a first branch oblique beam fixed to the power assembly on both sides of one end of the main beam through the mechanical fixing bolts and the reinforcing steel plate.

[0013] Furthermore, the bracket assembly also includes a second branch oblique beam fixed on both sides of the support frame and fixed to the main beam through the mechanical fixing bolts and the reinforcing steel plate to further increase the overall stability of the bracket assembly.

[0014] Furthermore, the retractable bracket also includes a fixed bracket fixed to both sides of the main rod, and the upper part of the fixed bracket is fixed to the main beam through the mechanical fixing bolts and the reinforcing steel plate, thereby increasing the overall stability of the excavation assembly.

[0015] Furthermore, the main rod and the secondary rod 1 are both composed of nested round rods with different inner diameters, with springs embedded between them to play a telescopic role. The secondary rod 2 is a round rod of fixed length, thereby realizing the adjustment of the inclination angle and height of the telescopic bracket.

[0016] Furthermore, the main hinge is provided with three connecting hinges, the two connecting hinges on both sides are connected to the secondary rod 1, the middle connecting hinge is connected to the secondary rod 2, and the other ends of the secondary rod 1 and the secondary rod 2 are provided with secondary hinges.

[0017] Furthermore, the sleeve arc blade group also includes two groups of half-sleeve arc petals connected to the secondary hinge, the bottom is fixed by the mechanical fixing bolts, and a row of pulleys are embedded on both sides of the inner side of the bottom to reduce frictional contact between the pipe and the inner wall of the sleeve.

[0018] Furthermore, the half-casing set is an unopened casing, comprising two groups of half-casing petals, with a row of pulleys embedded on both sides of the inner side of the bottom opening to reduce frictional contact between the pipe and the inner wall of the casing.

[0019] According to another aspect of the present invention, a construction method for a gas pipeline device with integrated trench excavation and installation is provided, which is implemented by applying the above-mentioned gas pipeline device with integrated trench excavation and installation, and includes the following steps:

[0020] S100: Surveying and laying out: Draw the pipeline line axis and construction zone boundary line according to the design and construction drawings, and mark the pipeline laying line on the ground in the construction area;

[0021] S200: Gas pipeline welding and acceptance: The gas pipeline is welded along the marked construction route in accordance with the construction technical quality requirements and passes the quality acceptance;

[0022] S300: Equipment assembly: The equipment is assembled above the gas pipeline. After the power assembly is in place, the bracket assembly is connected to the power assembly. Then, the excavation assembly and the laying assembly are fixed to the main beam of the bracket assembly using mechanical fixing bolts. At the same time, the casing arc blade assembly of the excavation assembly and the half casing assembly of the laying assembly are covered with the gas pipeline.

[0023] S400: Trench excavation and pipeline laying are performed simultaneously: The power assembly is located above the ground gas pipeline, providing traction toward the pipeline. The excavation assembly presses down under the gas pipeline's own weight and, driven by the power assembly, excavates the soil layer by layer. The blades push away the soil and turn the soil toward both sides of the pipeline to form a trench. The pipeline bends downward under its own gravity. The gas pipeline is flexibly fixed by stepped laying assemblies at different heights, controlling the pipeline's curvature and ensuring smooth pipeline laying into the trench. During the excavation and laying process, the support system ensures overall stability.

[0024] S500: Backfill and compact the trench soil layer: Use manual labor or construction machinery to backfill the excavated soil layer into the trench in layers, and ensure that the backfill is compacted.

[0025] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0026] 1. The present invention's integrated trenching and installation gas pipeline equipment assembles a power assembly, a support assembly, an excavation assembly, and a laying assembly, which work together. The power assembly provides traction toward the pipeline, driving the excavation assembly to excavate the soil layer by layer. The blades then push the soil away, turning the soil toward both sides of the pipeline to form a trench. The pipeline bends downward under its own gravity, and the gas pipeline is flexibly fixed by stepped laying assemblies at different heights, controlling the pipeline's curvature and ensuring smooth pipeline laying in the trench. This allows trenching and pipeline installation to be performed simultaneously in non-rocky areas, significantly shortening construction time.

[0027] 2. The equipment of the present invention is equipped with multiple laying assemblies to flexibly fix the gas pipeline. The laying assemblies are controlled by retractable brackets to form stepped laying assemblies of different heights. This allows the pipeline to be laid within the bending range, reducing deformation. When the pipeline enters the trench, it can protect the pipeline welds and pipelines. At the same time, the pipeline is laid linearly in the direction of the pipeline to ensure straightness and construction quality.

[0028] 3. The trench excavation component of the equipment of the present invention adopts the form of a plow shovel, and the depths of multiple sets of blades are inconsistent and gradually decrease, excavating in layers, minimizing damage to the surrounding soil layer and preventing soil from accumulating on both sides of the trench and causing trench collapse, thereby ensuring construction safety;

[0029] 4. The power assembly, support assembly, excavation assembly, and laying assembly of the equipment of the present invention are all detachable components, fixed by mechanical bolts, which have a high assembly rate and a high component reuse rate. Moreover, the equipment can be assembled and assembled according to the actual situation on site, avoiding the single function of the equipment and having strong applicability.

[0030] 5. The equipment of the present invention controls the left and right offset direction of the power assembly by controlling the rotation speed of the crawler wheels on both sides of the power assembly, thereby changing the direction of laying pipelines, and can adjust the height of the crawler chassis from the ground according to the diameter of different pipelines to adapt to the laying of pipelines with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a gas pipeline device with integrated trench excavation and installation according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall structure and use of a gas pipeline device with integrated trench excavation and installation according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the power assembly structure of the device according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the bracket assembly of the device according to the embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the excavation component structure of the equipment according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the laying components of the equipment according to the embodiment of the present invention;

[0037] Figure 7 This is a flow chart of a construction method for gas pipeline equipment with integrated trench excavation and installation according to an embodiment of the present invention.

[0038] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-power assembly, 101-mechanical fixing bolts, 102-reinforced steel plates, 103-drive device, 104-tracked chassis, 2-bracket assembly, 201-main beam, 202-first branch inclined beam, 203-support frame, 204-bracket wheel, 205-second branch inclined beam, 3-excavation assembly, 31-retractable bracket, 311-main rod, 312-fixed bracket, 313-main hinge, 314-secondary rod one, 315-secondary rod two, 316-secondary hinge, 32-casing arc blade group, 321-half casing arc petal, 322-pulley, 323-arc blade, 4-laying assembly, 41-half casing group, 411-half casing petal, 5-gas pipeline, 6-soil layer. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] In this patent, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0043] like Figure 1-2As shown, an embodiment of the present invention provides a gas pipeline equipment with integrated trench excavation and installation, including a power component 1, a support component 2, an excavation component 3 and a laying component 4. The power component 1 is located above the gas pipeline 5, and its end is installed and connected to the support component 2. The support component 2 includes a main beam 201. The excavation component 3 and the laying component 4 are fixedly installed on the main beam 201 and sleeve the gas pipeline 5. The power component 1 provides traction forward along the direction of the gas pipeline 5, driving the excavation component 3 to excavate the soil layer 6 in layers. When the pipeline is laid, it bends downward under the action of its own gravity. The laying component 4 flexibly fixes the gas pipeline 5 and controls the curvature of the pipeline, so that the pipeline can be smoothly laid into the trench. During the excavation and laying process, the support component 2 ensures the overall stability of the equipment, and realizes that the two steps of trench excavation and pipeline laying in non-rock areas can be carried out simultaneously, which greatly shortens the construction time and ensures the quality of pipeline construction. Among them,

[0044] like Figure 3 As shown, the rear end of the power assembly 1 is provided with a mechanical fixing bolt 101 and a reinforcing steel plate 102 for installing the bracket assembly 2. The power assembly 1 is an electric drive or internal combustion engine drive device, which can provide traction forward along the direction of the pipeline. It adopts a crawler chassis with a larger contact area with the ground and can adapt to different harsh environments. By controlling the speed of the crawler wheels on both sides, the left and right deviation directions can be controlled. At the same time, the ground clearance of the chassis can be adjusted according to the different pipe diameters to adapt to the laying of pipes with different diameters.

[0045] like Figure 4 As shown, the main beam 201 of the bracket assembly 2 is a metal tube with a certain wall thickness, hollow and rectangular cross-section, which is light and high in strength. A first branch oblique beam 202 is provided on both sides of one end thereof, both of which are fixed to the power assembly 1 through the mechanical fixing bolts 101 and the reinforcing steel plate 102; the bracket assembly 2 also includes a support frame 203, the upper part of the support frame 203 is fixed to the main beam 201 through the mechanical fixing bolts 101 in four horizontal directions, and a bracket wheel 204 is installed on both sides of the bottom, which mainly plays a supporting and stabilizing role, and a second branch oblique beam 205 is provided on both sides, both of which are fixed to the main beam 201 through the vertical mechanical fixing bolts 101 and the reinforcing steel plate 102.

[0046] like Figure 5As shown, the excavation assembly 3 includes a retractable bracket 31 and a sleeve arc blade group 32 hinged thereto. The upper part of the retractable bracket 31 is fixed to the bottom of the main beam 201 through multiple mechanical fixing bolts 101 and the reinforcing steel plate 102. The retractable bracket 31 includes a main rod 311, a fixed bracket 312, a main hinge 313, a secondary rod 1 314, a secondary rod 2 315 and a secondary hinge 316. The main rod 311 is composed of nested round rods with different inner diameters, with springs embedded between them to play a telescopic role. The fixed brackets 312 are fixed on both sides. The main rod 311 and the upper portion of the fixed bracket 312 are fixed to the bottom of the main beam 201 via the mechanical fixing bolts 101 and the reinforcing steel plate 102. The main hinge 313 is fixed to the bottom of the main rod 311. The main hinge is equipped with three connecting hinges. The connecting hinges on both sides are connected to the secondary rod 1 314. The secondary rod 1 314 is composed of nested round rods of different inner diameters, with springs embedded between them to play a telescopic role. The middle connecting hinge is connected to the secondary rod 2 315, which is a round rod of fixed length. The lower portions of the secondary rods 1 314 and 315 are fixed to the secondary hinge 316. The retractable bracket 31 controls the inclination angle and height of the sleeve arc blade assembly 32 through the extension and contraction of the main rod 311 and the secondary rod 1 314.

[0047] The casing arc blade group 32 includes two groups of half-casing arc petals 321, the upper part of which is connected and fixed to the secondary hinge 316 by the mechanical fixing bolts 101, and the bottom is fixed by the mechanical fixing bolts 101. A row of pulleys 322 are embedded on both sides of the inner side of the bottom. When the gas pipeline 5 is in the casing, the friction contact with the inner wall of the casing can be reduced. A curved blade 323 is fixed on the outer side of the bottom. The cross-section of the curved blade 323 is trapezoidal, which is consistent with the groove cross-section required for groove excavation.

[0048] Different casing arc blade groups 32 have cross-sectional dimensions of arc blades 323 corresponding to grooves of different depths. A set of equipment includes three groups of casing arc blade groups 32, i.e., arc blades 323 with three different cross-sections and depths. The casing arc blade groups 32 are evenly spaced, and the blade depths correspond to different soil layer depths. The excavation depths are different at different stages. The soil layers are excavated in layers by the arc blades 323 to reduce damage to the soil layers. During the excavation process, the arc blades 323 push away the soil layers and turn the soil to both sides, so that the soil in the groove continuously accumulates and piles up on both sides, and there is a distance from the edge of the groove to ensure the stability of the groove slope.

[0049] like Figure 6As shown, the laying assembly 4 includes the retractable support 31 and a half-pipe assembly 41. The retractable support 31 is used to control the inclination angle and height of the half-pipe assembly 41. During laying, the laying assemblies 4 are installed at intervals on the main beam 201 of the support assembly 2. By adjusting the length of the main rod 311 and secondary rod 314 of the retractable support 31, a stepped laying assembly 4 of different heights is formed, which allows the pipeline to be laid within the bending range in this area and reduces the deformation amplitude. The half-pipe assembly 41 is an open-type casing, consisting of two sets of half-pipe petals 401. A row of pulleys 322 are embedded on each side of the inner side of the bottom opening to reduce friction between the half-pipe assembly 41 and the gas pipeline 5, ensuring smooth pipeline laying.

[0050] like Figure 7 As shown, an embodiment of the present invention provides a construction method for a gas pipeline device with integrated trench excavation and installation, which is implemented by applying the above-mentioned gas pipeline device with integrated trench excavation and installation. The specific steps are as follows:

[0051] S100: Surveying and laying out: Draw the line axis and construction zone boundary line according to the design and construction drawings, and mark the pipeline laying line on the ground in the construction area;

[0052] S200: Gas pipeline welding and acceptance: The gas pipeline is welded along the marked construction route in accordance with the construction technical quality requirements and passes the quality acceptance;

[0053] S300: Equipment assembly: The equipment is assembled above the gas pipeline. After the power assembly is in place, the bracket assembly is connected to the power assembly. Then, the excavation assembly and the laying assembly are fixed to the main beam of the bracket assembly using mechanical fixing bolts. At the same time, the casing arc blade assembly of the excavation assembly and the half casing assembly of the laying assembly are covered with the gas pipeline.

[0054] S400: Trench excavation and pipeline laying are carried out simultaneously: the power component is located above the ground gas pipeline, providing traction in the direction of the pipeline, driving the excavation component to excavate the soil layer. The soil layer is excavated layer by layer by the excavation component blade to reduce damage to the soil layer. The blade pushes the soil layer apart and turns the soil to both sides. At the same time, the soil layer is pushed apart to both sides of the pipeline to form a trench. The soil in the trench continuously accumulates and piles up on both sides, and there is a distance from the trench edge to ensure the stability of the trench slope. When the pipeline is laid, it bends downward under the action of its own gravity. The gas pipeline is flexibly fixed by the laying component to control the curvature of the pipeline so that the pipeline can be laid smoothly into the trench. During the excavation and laying process, the support system ensures overall stability.

[0055] S500: Backfill and compact the trench soil layer: Use manual labor or construction machinery to backfill the excavated soil layer into the trench in layers, and ensure that the backfill is compacted.

[0056] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas pipeline equipment with integrated trench excavation and installation, characterized in that: The invention comprises a power assembly (1) for providing traction, a support assembly (2) connected to the end of the power assembly (1) and having a supporting function, an excavation assembly (3) fixedly mounted on the support assembly (2) for excavating soil layers in layers, and a laying assembly (4) fixedly mounted on the support assembly (2) for smoothly laying a pipeline into a trench; wherein: The power assembly (1) includes a driving device (103) and mechanical fixing bolts (101) and a reinforcing steel plate (102) for connecting the components; The support assembly (2) comprises a main beam (201), a support frame (203) fixed to the main beam (201) via mechanical fixing bolts (101) in four horizontal directions, and support wheels (204) installed on both sides of the bottom of the support frame, wherein the support wheels (204) mainly play a supporting and stabilizing role; The excavation assembly (3) includes a plurality of sets of casing arc blade assemblies (32) and a retractable bracket (31) connected to the top of the casing arc blade assemblies and controlling the tilt angle and height thereof; the retractable bracket (31) includes a retractable main rod (311), one end of which is connected to the main beam (201) of the bracket assembly (2) through the mechanical fixing bolt (101) and the reinforcing steel plate (102), and the other end is connected to a retractable secondary rod 1 (314) and a fixed-length secondary rod 2 (315) through a main hinge (313); the casing arc blade assemblies (32) include arc blades (323) with trapezoidal cross-sections, and the cross-sectional dimensions of the arc blades (323) of each set of casing arc blade assemblies (32) at grooves of different depths are different, and are used for layered excavation of soil layers; The laying assembly (4) comprises a half-sleeve group (41) and a retractable bracket (31) connected to the top end thereof and controlling the tilt angle and height thereof, so as to adapt to the laying of pipelines with different bending requirements.

2. A gas pipeline device with integrated trench excavation and installation according to claim 1, characterized in that: The power assembly (1) further comprises a crawler chassis (104) for increasing the contact area with the ground and adapting to different ground environments, and the height of the crawler chassis (104) from the ground can be adjusted to adapt to pipelines of different diameters.

3. A gas pipeline device with integrated trench excavation and installation according to any one of claims 1-2, characterized in that: The bracket assembly (2) further comprises a first branch oblique beam (202) fixed to the power assembly (1) on both sides of one end of the main beam (201) via the mechanical fixing bolts (101) and the reinforcing steel plate (102).

4. A gas pipeline device with integrated trench excavation and installation according to claim 3, characterized in that: The support assembly (2) further comprises a second branch oblique beam (205) fixedly arranged on both sides of the support frame (203) and fixed to the main beam (201) via the mechanical fixing bolts (101) and the reinforcing steel plate (102) for further increasing the overall stability of the support assembly (2).

5. A gas pipeline device with integrated trench excavation and installation according to any one of claims 1-2, characterized in that: The retractable bracket (31) further includes a fixed bracket (312) fixed to both sides of the main rod (311), and the upper portion of the fixed bracket (312) is fixed to the main beam (201) of the bracket assembly (2) through the mechanical fixing bolts (101) and the reinforcing steel plate (102), thereby increasing the overall stability of the excavation assembly (3).

6. A gas pipeline device with integrated trench excavation and installation according to claim 5, characterized in that: The main rod (311) and the secondary rod (314) are both composed of nested round rods with different inner diameters, with springs embedded between them to play a telescopic role. The secondary rod (315) is a round rod with a fixed length, so as to adjust the inclination angle and height of the telescopic bracket (31).

7. A gas pipeline device with integrated trench excavation and installation according to claim 6, characterized in that: The main hinge (313) is provided with three connecting hinges, the two connecting hinges on both sides are connected to the secondary rod 1 (314), the middle connecting hinge is connected to the secondary rod 2 (315), and the other ends of the secondary rod 1 (314) and the secondary rod 2 (315) are provided with secondary hinges (316).

8. A gas pipeline device with integrated trench excavation and installation according to claim 7, characterized in that: The sleeve arc blade assembly (32) further comprises two groups of half sleeve arc petals (321) connected to the secondary hinge (316), the bottom of which is fixed by the mechanical fixing bolts (101), and a row of pulleys (322) are embedded on both sides of the inner side of the bottom to reduce frictional contact between the pipe and the inner wall of the sleeve.

9. A gas pipeline device with integrated trench excavation and installation according to any one of claims 1-2, characterized in that: The half-sleeve group (41) is an unopened sleeve, comprising two groups of half-sleeve petals (411), with a row of pulleys (322) embedded on both sides of the inner side of the bottom opening to reduce frictional contact between the pipe and the inner wall of the sleeve.

10. A method for constructing gas pipeline equipment with integrated trench excavation and installation, characterized in that: The method is implemented by using a gas pipeline device with integrated trench excavation and installation according to any one of claims 1 to 9, characterized in that it includes the following steps: S100: Surveying and laying out: Draw the pipeline line axis and construction zone boundary line according to the design and construction drawings, and mark the pipeline laying line on the ground in the construction area; S200: Gas pipeline welding and acceptance: The gas pipeline is welded along the marked construction route in accordance with the construction technical quality requirements and passes the quality acceptance; S300: Equipment assembly: The equipment is assembled above the gas pipeline. After the power assembly is in place, the bracket assembly is connected to the power assembly. Then, the excavation assembly and the laying assembly are fixed to the main beam of the bracket assembly using mechanical fixing bolts. At the same time, the casing arc blade assembly of the excavation assembly and the half casing assembly of the laying assembly are covered with the gas pipeline. S400: Trench excavation and pipeline laying are performed simultaneously: The power assembly is located above the ground gas pipeline, providing traction toward the pipeline. The excavation assembly presses down under the gas pipeline's own weight and, driven by the power assembly, excavates the soil layer by layer. The blades push away the soil and turn the soil toward both sides of the pipeline to form a trench. The pipeline bends downward under its own gravity. The gas pipeline is flexibly fixed by stepped laying assemblies at different heights, controlling the pipeline's curvature and ensuring smooth pipeline laying into the trench. During the excavation and laying process, the support system ensures overall stability. S500: Backfill and compact the trench soil layer: Use manual labor or construction machinery to backfill the excavated soil layer into the trench in layers, and ensure that the backfill is compacted.

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