A sectional prefabricated rectangular pipe trench segment suitable for automatic mechanical assembly, a rectangular pipe trench and a method for assembling the same

Abstract

A kind of block prefabricated rectangular pipe ditch section suitable for automatic mechanical assembly, including bottom plate prefabricated part, left side plate prefabricated part and right side plate prefabricated part;Bottom plate prefabricated part top surface is equipped with bottom left C type joint groove, bottom left T type joint, bottom right C type joint groove and bottom right T type joint;Left side plate prefabricated part bottom surface is equipped with left side plate T type joint and left side plate C type joint groove;Left side plate T type joint is correspondingly inserted into bottom left C type joint groove and bottom left T type joint is correspondingly inserted into left side plate C type joint groove, to assemble left side plate prefabricated part to the top surface of bottom plate prefabricated part left side position;The bottom surface of right side plate prefabricated part is equipped with right side plate T type joint and right side plate C type joint groove;Right side plate T type joint is correspondingly inserted into bottom right C type joint groove and bottom right T type joint is correspondingly inserted into right side plate C type joint groove, to assemble right side plate prefabricated part to the top surface of bottom plate prefabricated part right side position.The present application reduces the amount of wet work, improves the degree of mechanization by replacing manpower with machinery, construction efficiency and quality consistency.

Description

Technical Field

[0001] This invention relates to the field of pipe trench technology, and in particular to a prefabricated pipe trench segment, a rectangular pipe trench, and a method for assembling the same. Background Technology

[0002] Substation trenches are used for cable laying, protection, and maintenance. In existing projects, trenches are mostly constructed using cast-in-place reinforced concrete. Cast-in-place construction involves a large amount of wet work on-site, has a long construction period, is significantly affected by climate and on-site organization, and is difficult to control in terms of quality consistency and appearance. At the same time, substation sites often have dense pipelines and frequent overlapping operations. Cast-in-place trenches occupy a long time in the formwork erection, rebar binding, concrete pouring, and curing stages, which can easily conflict with equipment installation procedures.

[0003] Furthermore, if a prefabrication scheme is adopted, the components are enormous, placing extremely high demands on transportation and hoisting equipment, making it difficult to adapt to the logistical conditions of complex sites, and ultimately limiting overall construction efficiency. In high-altitude and cold regions, the construction environment is even more severe: high altitude and lack of oxygen lead to decreased physical strength and extremely low work efficiency, causing labor costs to rise sharply and recruitment to be difficult, making the traditional construction method that relies too heavily on manpower unsustainable; at the same time, the extremely low winter temperatures make on-site pouring operations impossible, forcing the interruption of traditional construction methods and severely restricting the construction cycle.

[0004] Therefore, there is an urgent need for a prefabricated trench structure suitable for substations, which breaks down the trench into prefabricated components that are easy to transport and hoist, and allows for rapid positioning and assembly on-site using small mechanized equipment. This would minimize on-site manual labor and save scarce human resources, while ensuring reliable load-bearing and waterproof performance of longitudinal and lateral connections. Summary of the Invention

[0005] The technical problem this invention aims to solve is: addressing the difficulties in constructing existing cast-in-place pipe trenches in cold, high-altitude regions, the inability to work in winter, and the limitations of traditional precast components requiring extensive on-site assembly and unsuitable for mechanized construction in high-altitude, oxygen-deficient environments. This invention provides a modular precast rectangular pipe trench segment, a rectangular pipe trench, and its assembly method, adapted to automated mechanical assembly. The trench structure is designed for mechanized hoisting and positioning. Modular prefabrication facilitates transportation and enables efficient on-site assembly using quick-connect couplings. While ensuring structural strength and waterproofing, it significantly saves scarce human resources in high-altitude areas, enabling rapid construction under low-temperature winter conditions. By replacing manual labor with machinery, it improves mechanization, construction efficiency, and quality consistency.

[0006] To solve the above-mentioned technical problems, the present invention proposes the following technical solution: a segmented prefabricated rectangular pipe trench section adapted to automated mechanical assembly, comprising a base plate prefabricated component, a left side plate prefabricated component, and a right side plate prefabricated component; A bottom-left C-shaped groove is installed at the rear left side of the top surface of the precast base plate, and a bottom-left T-shaped joint is installed at the front left side. A bottom-right C-shaped groove is installed at the rear right side of the top surface of the precast base plate, and a bottom-right T-shaped joint is installed at the front right side. The left side panel prefabricated component has a left side panel T-shaped connector installed at the rear end of its bottom surface and a left side panel C-shaped connector installed at the front end. The left side panel T-shaped connector is inserted into the bottom left C-shaped groove, and the bottom left T-shaped connector is inserted into the left side panel C-shaped groove, thereby assembling the left side panel prefabricated component into the left side position on the top surface of the bottom panel prefabricated component. The rear end of the bottom surface of the right side panel prefabricated component is equipped with a right side panel T-joint, and the front end is equipped with a right side panel C-groove. The right side panel T-shaped connector is inserted into the bottom right C-shaped groove, and the bottom right T-shaped connector is inserted into the right side panel C-shaped groove, thereby assembling the right side panel prefabricated component onto the right side of the top surface of the bottom panel prefabricated component.

[0007] A further limitation of the above technical solution is that a left mounting groove for a cover plate is opened at the intersection of the right side of the top surface and the top of the right side surface of the left side panel prefabricated component, and a right mounting groove for a cover plate is opened at the intersection of the left side of the top surface and the top of the left side surface of the right side panel prefabricated component. The trench segment also includes a cover plate, and the left and right sides of the cover plate are respectively placed in the left mounting groove and the right mounting groove for the cover plate, so that the cover plate is stably placed between the left side panel prefabricated component and the right side panel prefabricated component and located above the bottom plate prefabricated component.

[0008] To solve the above-mentioned technical problems, the present invention proposes the following technical solution: a segmented prefabricated rectangular pipe trench adapted to automated mechanical assembly, comprising several pipe trench segments assembled and connected, and several assembly joints for connecting the several pipe trench segments; Each trench segment includes a base plate precast component, a left side plate precast component, and a right side plate precast component; A bottom-left C-shaped groove is installed at the rear left side of the top surface of the precast base plate, and a bottom-left T-shaped joint is installed at the front left side. A bottom-right C-shaped groove is installed at the rear right side of the top surface of the precast base plate, and a bottom-right T-shaped joint is installed at the front right side. The left side panel prefabricated component has a left side panel T-shaped connector installed at the rear end of its bottom surface and a left side panel C-shaped connector installed at the front end. The left side panel T-shaped connector is inserted into the bottom left C-shaped groove, and the bottom left T-shaped connector is inserted into the left side panel C-shaped groove, thereby assembling the left side panel prefabricated component into the left side position on the top surface of the bottom panel prefabricated component. The rear end of the bottom surface of the right side panel prefabricated component is equipped with a right side panel T-joint, and the front end is equipped with a right side panel C-groove. The right side panel T-shaped connector is inserted into the bottom right C-shaped groove, and the bottom right T-shaped connector is inserted into the right side panel C-shaped groove, thereby assembling the right side panel prefabricated component onto the right side of the top surface of the bottom panel prefabricated component. Several assembly joints are installed between adjacent base plate prefabricated components, adjacent left side plate prefabricated components, and adjacent right side plate prefabricated components, thereby connecting adjacent trench segments.

[0009] The above technical solution is further defined in that the bottom left C-shaped groove, bottom left T-shaped joint, bottom right C-shaped groove, bottom right T-shaped joint, left side plate T-shaped joint, left side plate C-shaped groove, right side plate T-shaped joint and right side plate C-shaped groove are all installed in the bottom plate precast component, left side plate precast component and right side plate precast component respectively by casting and pre-embedding.

[0010] A further limitation of the above technical solution is that a left mounting groove for a cover plate is opened at the intersection of the right side of the top surface and the top of the right side surface of the left side panel prefabricated component, and a right mounting groove for a cover plate is opened at the intersection of the left side of the top surface and the top of the left side surface of the right side panel prefabricated component. The trench segment also includes a cover plate, and the left and right sides of the cover plate are respectively placed in the left mounting groove and the right mounting groove for the cover plate, so that the cover plate is stably placed between the left side panel prefabricated component and the right side panel prefabricated component and located above the bottom plate prefabricated component.

[0011] A further limitation of the above technical solution is that the assembly joint is a threaded self-locking joint, which includes a pre-embedded nut, a threaded bolt, and a reserved bushing; The pre-embedded nuts are installed at the front and rear ends of the precast base plate, the precast left side plate, and the precast right side plate by casting. The screw rod is straight, and its two ends are respectively connected to the pre-embedded nuts in two adjacent trench sections; The reserved bushing is installed on the outside of the middle section of the screw rod, and the reserved bushing is made of plastic. or The assembly joint is a channel steel joint, which includes embedded channel steel and connecting bolts; The pre-embedded channel steel is installed at the front and rear ends of the precast bottom plate, the precast left side plate, and the precast right side plate by casting. The connecting screw is straight, and its two ends are respectively connected to the pre-embedded channel steel in two adjacent trench sections.

[0012] To solve the above-mentioned technical problems, the present invention proposes the following technical solution: an assembly method for prefabricated rectangular pipe trenches adapted to automated mechanical assembly, comprising the following steps: Step 1: Position the precast base plate of the first trench segment; Step 2: Push the left and right precast panels of the first trench segment along the jacking direction, i.e., from back to front, so that the T-joint of the left panel is inserted into the bottom left C-groove, the bottom left T-joint is inserted into the left panel C-groove, the right panel T-joint is inserted into the bottom right C-groove, and the bottom right T-joint is inserted into the right panel C-groove, thereby assembling the left and right precast panels onto the left and right sides of the top surface of the bottom panel precast panel, respectively. Step 3: Connect the precast base plate of the second trench segment to the rear side of the precast base plate of the first trench segment using the assembly joint; Step 4: Push the left and right precast plates of the second trench segment along the jacking direction so that the T-joint of the left plate is inserted into the bottom left C-groove, the bottom left T-joint is inserted into the left plate C-groove, the right plate T-joint is inserted into the bottom right C-groove, and the bottom right T-joint is inserted into the right plate C-groove. This way, the left and right precast plates of the second trench segment are assembled onto the left and right sides of the top surface of the bottom plate precast of the second trench segment, respectively. The left and right prefabricated plates of the second trench segment are connected to the rear of the left and right prefabricated plates of the first trench segment using assembly joints, thereby achieving the assembly connection between the second and first trench segments. Step 5: Repeat steps 3 to 4 to assemble and connect the remaining trench segments.

[0013] A further limitation of the above technical solution is that a cover plate left mounting groove is opened at the intersection of the top right side of the left side panel prefabricated component and the top of the right side panel, and a cover plate right mounting groove is opened at the intersection of the top left side of the right side panel prefabricated component and the top of the left side panel, and the trench segment also includes a cover plate. The assembly method further includes step 6: placing the cover plate of each trench segment between its corresponding left side plate prefabricated component and right side plate prefabricated component and above its corresponding bottom plate prefabricated component.

[0014] A further limitation of the above technical solution is that the assembly joint is a threaded self-locking joint, which includes a pre-embedded nut, a threaded bolt, and a reserved bushing; The pre-embedded nuts are installed at the front and rear ends of the precast base plate, the precast left side plate, and the precast right side plate by casting. The screw rod is straight, and its two ends are respectively connected to the pre-embedded nuts in two adjacent trench sections; The reserved bushing is installed on the outside of the middle section of the screw rod, and the reserved bushing is made of plastic. The specific process of step 3 is as follows: screw several threaded rods into several pre-embedded nuts on the bottom plate prefabricated part, left side plate prefabricated part and right side plate prefabricated part of the first trench segment, and install several reserved bushings. Tightly connect several pre-embedded nuts at the front end of the bottom plate prefabricated part of the second trench segment with several threaded rods at the rear end of the bottom plate prefabricated part of the first trench segment. Step 4, which involves assembling and connecting the second trench segment with the first trench segment, involves fastening several pre-embedded nuts at the front ends of the left and right prefabricated plates of the second trench segment to several threaded bolts at the rear ends of the left and right prefabricated plates of the first trench segment. or The assembly joint is a channel steel joint, which includes a pre-embedded channel steel and a connecting bolt; Embedded channel steel is installed at the front and rear ends of the precast base plate, the precast left side plate, and the precast right side plate; The connecting screw is straight, and its two ends are respectively connected to the pre-embedded channel steel in two adjacent trench sections; The specific process of step 3 is as follows: screw several connecting bolts into several embedded channel steels of the base plate prefabricated component, the left side plate prefabricated component and the right side plate prefabricated component, and fasten several embedded channel steels at the front end of the base plate prefabricated component of the second trench segment to several connecting bolts at the rear end of the base plate prefabricated component of the first trench segment. Step 4, which involves assembling and connecting the second trench segment with the first trench segment, involves fastening several embedded channel steels at the front ends of the left and right prefabricated plates of the second trench segment to several connecting bolts at the rear ends of the left and right prefabricated plates of the first trench segment.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The rectangular trench of this invention is not cast in one piece, but is assembled from several trench segments along the longitudinal direction. Each trench segment is also not cast in one piece, but consists of three independent prefabricated components: a base plate, a left side plate, and a right side plate. The weight and dimensions of each prefabricated component are easier to control, making transportation and hoisting more convenient. This is suitable for substations with limited space and overlapping operations. Furthermore, the segmented design allows for the use of small, mechanized equipment for positioning and assembly, significantly reducing reliance on manual labor on-site. This is particularly suitable for labor-scarce areas such as high-altitude regions, where machinery replaces manual labor, improving mechanization, construction efficiency, and quality consistency.

[0016] 2. The factory prefabrication method is particularly suitable for winter construction in high-altitude and cold regions where on-site casting is not feasible. Prefabrication not only facilitates quality control of reinforcing steel and embedded parts, but also simplifies on-site operations, requiring only positioning, jacking, and bolt tightening, thereby significantly shortening the construction period and improving overall quality consistency.

[0017] 3. The trench segment of this invention only requires pushing the left and right precast plates along the jacking direction (from back to front), and inserting several T-joints into several corresponding C-grooves to assemble the left and right precast plates onto the left and right sides of the top surface of the bottom plate precast plate, respectively. Using this C-grooves and T-joints, locking is achieved simply by sliding them in along the jacking direction, significantly improving assembly efficiency and reducing on-site wet work compared to cast-in-place or traditional wet joints.

[0018] 4. The connection between multiple trench segments of the present invention is achieved by connecting adjacent prefabricated base plates, adjacent prefabricated left side plates, and adjacent prefabricated right side plates through assembly joints. This enables rapid assembly and replaceable maintenance of trench segments. Waterproof sealing rubber gaskets are installed in all longitudinal and transverse seams, which improves waterproof reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a left view of the first embodiment of the rectangular trench of the present invention.

[0021] Figure 2 This is a rear view of the first embodiment of the rectangular trench segment of the present invention.

[0022] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0023] Figure 4 yes Figure 2 A cross-sectional view along the BB direction.

[0024] Figure 5 This is a schematic diagram of the left side panel T-joint, the bottom left C-groove, the bottom left T-joint, and the left side panel C-groove.

[0025] Figure 6 This is a schematic diagram of a threaded self-locking joint.

[0026] Figure 7 This is a schematic diagram of the assembly method of the first embodiment of the rectangular trench of the present invention.

[0027] Figure 8 This is a left view of the second embodiment of the rectangular trench of the present invention.

[0028] Figure 9 This is a rear view of a second embodiment of the rectangular trench segment of the present invention.

[0029] Figure 10 yes Figure 9 A cross-sectional view along the CC direction.

[0030] Figure 11 yes Figure 9 A cross-sectional view along the DD direction.

[0031] Figure 12 This is a schematic diagram of a channel steel joint.

[0032] Figure 13 This is a schematic diagram of the assembly method of the second embodiment of the rectangular trench of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. First Embodiment

[0034] like Figures 1 to 6 As shown, the present invention proposes a first embodiment of a prefabricated rectangular pipe trench 100 adapted to automated mechanical assembly, which includes several pipe trench segments 1 assembled and connected along the longitudinal direction (front and back direction), several assembly joints (unlabeled) for connecting several pipe trench segments 1, and several waterproof sealing rubber gaskets (not shown in the figure).

[0035] Each trench segment 1 includes a base plate prefabricated component 11, a left side plate prefabricated component 13, a right side plate prefabricated component 15, and a cover plate 17.

[0036] The bottom left C-shaped groove 111 is installed on the left rear end of the top surface of the precast base plate 11 by casting and embedding, and the bottom left T-shaped joint 112 is installed on the left front end by casting and embedding.

[0037] The bottom right C-shaped groove 113 is installed at the rear right side of the top surface of the precast base plate 11 by casting and embedding, and the bottom right T-shaped joint 114 is installed at the front right side by casting and embedding.

[0038] The left side panel T-joint 131 is installed at the rear end of the bottom surface of the precast component 13 by casting and embedding, and the left side panel C-groove 132 is installed at the front end by casting and embedding.

[0039] A cover plate left mounting groove 138 is opened at the intersection of the top right side and the top of the right side of the left side panel prefabricated component 13.

[0040] By inserting the left side panel T-joint 131 into the bottom left C-groove 111 and the bottom left T-joint 112 into the left side panel C-groove 132, the left side panel prefabricated component 13 can be assembled onto the left side of the top surface of the bottom panel prefabricated component 11. The two T-joints 131 and 112 and the two C-grooves 111 and 132 restrict the relative opening and closing of the left side panel prefabricated component 13 and the bottom panel prefabricated component 11 and transmit tensile force.

[0041] The rear end of the bottom surface of the right side panel precast component 15 is equipped with a right side panel T-type joint 153 by casting and embedding, and the front end is equipped with a right side panel C-type groove 154 by casting and embedding.

[0042] A cover plate right mounting groove 158 is opened at the intersection of the top left side of the right side panel prefabricated component 15 and the top of the left side panel.

[0043] By inserting the right side panel T-joint 153 into the bottom right C-groove 113 and the bottom right T-joint 114 into the right side panel C-groove 154, the right side panel prefabricated component 15 can be assembled onto the right side of the top surface of the bottom plate prefabricated component 11. The two T-joints 153 and 114 and the two C-grooves 113 and 154 restrict the relative opening and closing of the right side panel prefabricated component 15 and the bottom plate prefabricated component 11 and transmit tensile force.

[0044] Bottom left C-shaped groove 111, bottom left T-shaped joint 112, bottom right C-shaped groove 113, bottom right T-shaped joint 114, left side plate T-shaped joint 131, left side plate C-shaped groove 132, right side plate T-shaped joint 153, and right side plate C-shaped groove 154 are all made of cast iron, and each has two anchoring steel bars 18 connected to its tail.

[0045] The left and right sides of the cover plate 17 are placed in the left mounting groove 138 and the right mounting groove 158 of the cover plate, respectively, so that the cover plate 17 is stably placed between the left side plate prefabricated part 13 and the right side plate prefabricated part 15 and is located above the bottom plate prefabricated part 11.

[0046] Several assembly joints (unnumbered) are installed between adjacent base plate prefabricated parts 11, adjacent left side plate prefabricated parts 13, and adjacent right side plate prefabricated parts 15, respectively, thereby connecting adjacent trench segments 1.

[0047] like Figure 6 As shown, the assembly joint (unlabeled) is a threaded self-locking joint 2, which includes a pre-embedded nut 21, a threaded screw 23, and a reserved bushing 25.

[0048] The pre-embedded nuts 21 are installed at the front and rear ends of the base plate precast component 11, the left side plate precast component 13, and the right side plate precast component 15 by casting.

[0049] Several pre-embedded nuts 21 contained in several assembly joints (unnumbered) are respectively pre-embedded at the front and rear ends of the base plate prefabricated component 11, the left side plate prefabricated component 13 and the right side plate prefabricated component 15.

[0050] The screw rod 23 is straight. The two ends of the screw rod 23 are respectively connected to the pre-embedded nuts 21 in two adjacent trench segments 1, thereby assembling the two adjacent trench segments 1 along the longitudinal direction (front and back direction).

[0051] The reserved bushing 25 is installed on the outside of the middle section of the screw rod 23, and the reserved bushing 25 is made of plastic.

[0052] During construction, the threaded self-locking connector 2 can be installed and disassembled by screwing in, or it can be locked by squeezing in and then disassembled by screwing out.

[0053] Waterproof sealing rubber gaskets (not shown) are installed in the longitudinal joints between the base plate precast component 11 and the left side plate precast component 13, the longitudinal joints between the base plate precast component 11 and the right side plate precast component 15, the longitudinal joints between the cover plate 17 and the left side plate precast component 13, the longitudinal joints between the cover plate 17 and the right side plate precast component 15, the transverse joints between adjacent base plate precast components 11, the transverse joints between adjacent left side plate precast components 13, the transverse joints between adjacent right side plate precast components 15, and the transverse joints between adjacent cover plates 27, to prevent water from entering the interior of the pipe trench 1.

[0054] like Figure 7 As shown, the assembly method of the first embodiment of the prefabricated rectangular trench 100 adapted to automated mechanical assembly includes the following steps: Step 1: Position the precast base plate 11 of the first trench segment 1 in place; Step 2: Push the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the first trench segment 1 along the jacking direction (from back to front) so that the left side plate T-type connector 131 is inserted into the bottom left C-type groove 111, the bottom left T-type connector 112 is inserted into the left side plate C-type groove 132, the right side plate T-type connector 153 is inserted into the bottom right C-type groove 113, and the bottom right T-type connector 114 is inserted into the right side plate C-type groove 154. Thus, the left side plate prefabricated component 13 and the right side plate prefabricated component 15 are respectively assembled on the left and right sides of the top surface of the bottom plate prefabricated component 11. Waterproof sealing rubber gaskets (not shown in the figure) are installed in the longitudinal joints between the bottom plate precast component 11 and the left side plate precast component 13, and between the bottom plate precast component 11 and the right side plate precast component 15. Step 3: Connect the precast base plate 11 of the second trench segment 1 to the rear side of the precast base plate 11 of the first trench segment 1 using an assembly joint (unnumbered). Specifically, screw several threaded rods 23 into several pre-embedded nuts 21 on the precast base plate 11, the left side plate 13, and the right side plate 15 of the first trench segment 1, and install several reserved bushings 25. Tightly connect several pre-embedded nuts 21 at the front end of the precast base plate 11 of the second trench segment 1 to several threaded rods 23 at the rear end of the precast base plate 11 of the first trench segment 1. Waterproof sealing rubber gaskets are installed in the transverse joints between adjacent precast base plate components 11 (not shown in the figure). Step 4: Push the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 along the jacking direction (from back to front) so that the left side plate T-joint 131 is inserted into the bottom left C-shaped groove 111, the bottom left T-joint 112 is inserted into the left side plate C-shaped groove 132, the right side plate T-joint 153 is inserted into the bottom right C-shaped groove 113, and the bottom right T-joint 114 is inserted into the right side plate C-shaped groove 154. Thus, the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 are respectively assembled onto the left and right sides of the top surface of the bottom plate prefabricated component 11 of the second trench segment 1. Using assembly joints (unlabeled), the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 are respectively connected to the rear side of the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the first trench segment 1, thereby realizing the longitudinal assembly connection between the second trench segment 1 and the first trench segment 1. The specific process is as follows: several pre-embedded nuts 21 at the front end of the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 are fastened to several threaded bolts 23 at the rear end of the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the first trench segment 1. Waterproof sealing rubber gaskets (not shown in the figure) are installed between the longitudinal joints of adjacent bottom slab precast component 11 and left side slab precast component 13, between adjacent bottom slab precast component 11 and right side slab precast component 15, between adjacent left side slab precast component 13 and between adjacent right side slab precast component 15. Step 5: Repeat steps 3 to 4 to assemble and connect the remaining trench segments 1 along the longitudinal direction. Waterproof sealing rubber gaskets are installed in both the longitudinal and transverse joints (not shown in the figure). Step 6: Place the cover plate 17 of each trench segment 1 between its corresponding left side plate prefabricated component 13 and right side plate prefabricated component 15 and above its corresponding bottom plate prefabricated component 11. Waterproof sealing rubber gaskets (not shown) are installed on the transverse seams between adjacent cover plates 17, the longitudinal seams between adjacent cover plates 17 and the left side plate prefabricated component 13, and the longitudinal seams between adjacent cover plates 17 and the right side plate prefabricated component 15.

[0055] Compared with the prior art, the present invention has the following beneficial effects: 1. The rectangular trench 100 of this invention is not integrally cast, but rather assembled from several trench segments 1 longitudinally. Each trench segment 1 is also not integrally cast, but rather assembled from three independent precast components: a base plate precast component 11, a left side plate precast component 13, and a right side plate precast component 15. The weight and dimensions of each precast component are easier to control, making transportation and hoisting more convenient. This design is suitable for substation sites with limited space and overlapping operations. Furthermore, the modular design allows for the use of small, mechanized equipment for positioning and assembly, significantly reducing reliance on manual labor on-site. This is particularly suitable for labor-scarce areas such as high-altitude regions, where machinery replaces manual labor, improving mechanization, construction efficiency, and quality consistency.

[0056] 2. The factory prefabrication method is particularly suitable for winter construction in high-altitude and cold regions where on-site casting is not feasible. Prefabrication not only facilitates quality control of reinforcing steel and embedded parts, but also simplifies on-site operations, requiring only positioning, jacking, and bolt tightening, thereby significantly shortening the construction period and improving overall quality consistency.

[0057] 3. In this invention, the trench segment 1 only requires pushing the left side plate prefabricated component 13 and the right side plate prefabricated component 15 along the jacking direction (from back to front), and correspondingly inserting several T-shaped joints 131, 112, 114, and 153 into several C-shaped grooves 111, 132, 113, and 154 to assemble the left side plate prefabricated component 13 and the right side plate prefabricated component 15 onto the left and right sides of the top surface of the bottom plate prefabricated component 11. Using this C-shaped groove and T-shaped joint, locking can be completed simply by sliding in along the jacking direction, significantly improving assembly efficiency and reducing on-site wet work compared to cast-in-place or traditional wet joints.

[0058] 4. The connection between multiple trench segments 1 of the present invention is achieved by fastening the pre-embedded nuts 21 and the screw rods 23 to connect adjacent base plate prefabricated parts 11, adjacent left side plate prefabricated parts 13 and adjacent right side plate prefabricated parts 15, which can realize the rapid assembly and replacement maintenance of trench segments 1. Waterproof sealing rubber gaskets (not shown in the figure) are installed in all longitudinal and transverse seams, which improves the waterproof reliability. Second Embodiment

[0059] like Figures 8 to 12 As shown, the second embodiment of the prefabricated rectangular pipe trench 100 adapted to automated mechanical assembly of the present invention includes several pipe trench segments 1 assembled and connected along the longitudinal direction (front and back direction), several assembly joints (unlabeled) for connecting several pipe trench segments 1, and several waterproof sealing rubber gaskets (not shown in the figure).

[0060] The trench segment 1 of the second embodiment is the same as the trench segment 1 of the first embodiment, except that all the pre-embedded nuts 21 embedded in the front and rear ends of the precast bottom plate 11, the precast left side plate 13 and the precast right side plate 15 during casting are replaced with pre-embedded channel steel 41 described later.

[0061] The waterproof sealing rubber gasket of the second embodiment (not shown) is the same as the waterproof sealing rubber gasket of the first embodiment (not shown).

[0062] Several assembly joints (unnumbered) are installed between adjacent base plate prefabricated parts 11, adjacent left side plate prefabricated parts 13, and adjacent right side plate prefabricated parts 15, respectively, thereby connecting adjacent trench segments 1.

[0063] like Figure 12 As shown, the assembly joint (not labeled) in the second embodiment is a channel steel joint 4, which includes a pre-embedded channel steel 41 and a connecting screw 43.

[0064] The pre-embedded channel steel 41 is pre-embedded at the front and rear ends of the bottom plate precast component 11, the left side plate precast component 13, and the right side plate precast component 15 during casting.

[0065] Several pre-embedded channel steels 41 contained in several assembly joints (unnumbered) are respectively pre-embedded at the front and rear ends of the bottom plate prefabricated component 11, the left side plate prefabricated component 13 and the right side plate prefabricated component 15.

[0066] The connecting screw 43 is straight. The two ends of the connecting screw 43 are respectively connected to the pre-embedded channel steel 41 in two adjacent trench segments 1, thereby assembling the two adjacent trench segments 1 along the longitudinal direction (front and back direction).

[0067] During assembly, connecting screws 43 need to be screwed in. The pre-embedded channel steels 41 on the end face of adjacent trench segments 1 are connected by connecting screws 43 to achieve rapid assembly and force transfer of trench segments 1.

[0068] like Figure 13 As shown, the assembly method of the second embodiment of the prefabricated rectangular trench 100 adapted to automated mechanical assembly includes the following steps: Step 1: Position the precast base plate 11 of the first trench segment 1 in place; Step 2: Push the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the first trench segment 1 along the jacking direction (from back to front) so that the left side plate T-type connector 131 is inserted into the bottom left C-type groove 111, the bottom left T-type connector 112 is inserted into the left side plate C-type groove 132, the right side plate T-type connector 153 is inserted into the bottom right C-type groove 113, and the bottom right T-type connector 114 is inserted into the right side plate C-type groove 154. Thus, the left side plate prefabricated component 13 and the right side plate prefabricated component 15 are respectively assembled on the left and right sides of the top surface of the bottom plate prefabricated component 11. Waterproof sealing rubber gaskets (not shown in the figure) are installed in the longitudinal joints between the bottom plate precast component 11 and the left side plate precast component 13, and between the bottom plate precast component 11 and the right side plate precast component 15. Step 3: Connect the precast base plate 11 of the second trench segment 1 to the rear side of the precast base plate 11 of the first trench segment 1 using the assembly joint (unnumbered). Specifically, screw several connecting bolts 43 into several embedded channel steels 41 of the precast base plate 11, the left side plate precast part 13, and the right side plate precast part 15, and fasten several embedded channel steels 41 at the front end of the precast base plate 11 of the second trench segment 1 to several connecting bolts 43 at the rear end of the precast base plate 11 of the first trench segment 1. Waterproof sealing rubber gaskets are installed in the transverse joints between adjacent precast base plate components 11 (not shown in the figure). Step 4: Push the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 along the jacking direction (from back to front) so that the left side plate T-type connector 131 is inserted into the bottom left C-type groove 111, the bottom left T-type connector 112 is inserted into the left side plate C-type groove 132, the right side plate T-type connector 153 is inserted into the bottom right C-type groove 113, and the bottom right T-type connector 114 is inserted into the right side plate C-type groove 154. Assemble the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 onto the left and right sides of the top surface of the bottom plate prefabricated component 11 of the second trench segment 1, respectively. Using assembly joints (unnumbered), the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 are respectively connected to the rear side of the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the first trench segment 1, thereby realizing the longitudinal assembly connection between the second trench segment 1 and the first trench segment 1. The specific process is as follows: several embedded channel steels 41 at the front end of the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the second trench segment 1 are fastened to several connecting bolts 43 at the rear end of the left side plate prefabricated component 13 and the right side plate prefabricated component 15 of the first trench segment 1. Waterproof sealing rubber gaskets (not shown in the figure) are installed between the longitudinal joints of adjacent bottom slab precast component 11 and left side slab precast component 13, between adjacent bottom slab precast component 11 and right side slab precast component 15, between adjacent left side slab precast component 13 and between adjacent right side slab precast component 15. Step 5: Repeat steps 3 to 4 to assemble and connect the remaining trench segments 1 along the longitudinal direction. Waterproof sealing rubber gaskets are installed in both the longitudinal and transverse joints (not shown in the figure). Step 6: Place the cover plate 17 of each trench segment 1 between its corresponding left side plate prefabricated component 13 and right side plate prefabricated component 15 and above its corresponding bottom plate prefabricated component 11. Waterproof sealing rubber gaskets (not shown) are installed on the transverse seams between adjacent cover plates 17, the longitudinal seams between adjacent cover plates 17 and the left side plate prefabricated component 13, and the longitudinal seams between adjacent cover plates 17 and the right side plate prefabricated component 15.

[0069] Compared with the prior art, the second embodiment of the present invention has the following beneficial effects: 1. The rectangular trench 100 of this invention is not integrally cast, but rather assembled from several trench segments 1 longitudinally. Each trench segment 1 is also not integrally cast, but consists of three independent precast components: a base plate precast component 11, a left side plate precast component 13, and a right side plate precast component 15. The weight and dimensions of each precast component are easier to control, making transportation and hoisting more convenient. This design is suitable for substation sites with limited space and overlapping operations. Furthermore, the modular design allows for the use of small, mechanized equipment for positioning and assembly, significantly reducing reliance on manual labor on-site. This is particularly suitable for labor-scarce areas such as high-altitude regions, where machinery replaces manual labor, improving mechanization, construction efficiency, and quality consistency.

[0070] 2. The factory prefabrication method is particularly suitable for winter construction in high-altitude and cold regions where on-site casting is not feasible. Prefabrication not only facilitates quality control of reinforcing steel and embedded parts, but also simplifies on-site operations, requiring only positioning, jacking, and bolt tightening, thereby significantly shortening the construction period and improving overall quality consistency.

[0071] 3. In this invention, the trench segment 1 only requires pushing the left side plate prefabricated component 13 and the right side plate prefabricated component 15 along the jacking direction (from back to front), and correspondingly inserting several T-shaped joints 131, 112, 114, and 153 into several C-shaped grooves 111, 132, 113, and 154 to assemble the left side plate prefabricated component 13 and the right side plate prefabricated component 15 onto the left and right sides of the top surface of the bottom plate prefabricated component 11. Using this C-shaped groove and T-shaped joint, locking can be completed simply by sliding in along the jacking direction, significantly improving assembly efficiency and reducing on-site wet work compared to cast-in-place or traditional wet joints.

[0072] 4. The connection between multiple trench segments 1 of the present invention is achieved by fastening the pre-embedded channel steel 41 and the connecting screw 43 to connect adjacent base plate prefabricated parts 11, adjacent left side plate prefabricated parts 13 and adjacent right side plate prefabricated parts 15, which can realize the rapid assembly and replacement maintenance of trench segments 1. Waterproof sealing rubber gaskets (not shown in the figure) are installed in all longitudinal and transverse seams, which improves the waterproof reliability.

[0073] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A segmented prefabricated rectangular trench segment (1) adapted to automated mechanical assembly, characterized in that, It includes a base plate prefabricated component (11), a left side plate prefabricated component (13), and a right side plate prefabricated component (15); The bottom left C-shaped groove (111) is installed on the left rear end of the top surface of the bottom plate precast component (11), and the bottom left T-shaped joint (112) is installed on the left front end. The bottom right C-shaped groove (113) is installed on the right rear end of the top surface of the precast base plate (11), and the bottom right T-shaped joint (114) is installed on the right front end. The left side panel prefabricated component (13) has a left side panel T-shaped connector (131) installed at the rear end of the bottom surface and a left side panel C-shaped groove (132) installed at the front end. The left side panel T-shaped connector (131) is inserted into the bottom left C-shaped groove (111) and the bottom left T-shaped connector (112) is inserted into the left side panel C-shaped groove (132), thereby assembling the left side panel prefabricated part (13) on the left side of the top surface of the bottom panel prefabricated part (11); The rear end of the bottom surface of the right side panel prefabricated component (15) is equipped with a right side panel T-type connector (153), and the front end is equipped with a right side panel C-type groove (154). The right side panel T-shaped connector (153) is inserted into the bottom right C-shaped groove (113), and the bottom right T-shaped connector (114) is inserted into the right side panel C-shaped groove (154), thereby assembling the right side panel prefabricated part (15) on the right side of the top surface of the bottom panel prefabricated part (11).

2. The prefabricated rectangular trench segment (1) adapted to automated mechanical assembly according to claim 1, characterized in that, A cover plate left mounting groove (138) is opened at the intersection of the top right side and the top of the right side surface of the left side plate prefabricated component (13), and a cover plate right mounting groove (158) is opened at the intersection of the top left side and the top of the left side surface of the right side plate prefabricated component (15). The trench segment (1) also includes a cover plate (17). The left and right sides of the cover plate (17) are placed in the cover plate left mounting groove (138) and the cover plate right mounting groove (158) respectively. The cover plate (17) is stably placed between the left side plate prefabricated component (13) and the right side plate prefabricated component (15) and is located above the bottom plate prefabricated component (11).

3. A modular prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly, characterized in that, It includes several assembled trench segments (1) and several assembly joints for connecting the several trench segments (1); Each trench segment (1) includes a bottom plate precast component (11), a left side plate precast component (13), and a right side plate precast component (15). The bottom left C-shaped groove (111) is installed on the left rear end of the top surface of the bottom plate precast component (11), and the bottom left T-shaped joint (112) is installed on the left front end. The bottom right C-shaped groove (113) is installed on the right rear end of the top surface of the precast base plate (11), and the bottom right T-shaped joint (114) is installed on the right front end. The left side panel prefabricated component (13) has a left side panel T-shaped connector (131) installed at the rear end of the bottom surface and a left side panel C-shaped groove (132) installed at the front end. The left side panel T-shaped connector (131) is inserted into the bottom left C-shaped groove (111) and the bottom left T-shaped connector (112) is inserted into the left side panel C-shaped groove (132), thereby assembling the left side panel prefabricated part (13) on the left side of the top surface of the bottom panel prefabricated part (11); The rear end of the bottom surface of the right side panel prefabricated component (15) is equipped with a right side panel T-type connector (153), and the front end is equipped with a right side panel C-type groove (154). The right side panel T-type connector (153) is inserted into the bottom right C-type groove (113) and the bottom right T-type connector (114) is inserted into the right side panel C-type groove (154), thereby assembling the right side panel prefabricated part (15) on the right side of the top surface of the bottom panel prefabricated part (11). Several assembly joints are installed between adjacent base plate prefabricated parts (11), between adjacent left side plate prefabricated parts (13), and between adjacent right side plate prefabricated parts (15) to connect adjacent trench segments (1).

4. The segmented prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly according to claim 3, characterized in that, The bottom left C-shaped groove (111), bottom left T-shaped joint (112), bottom right C-shaped groove (113), bottom right T-shaped joint (114), left side plate T-shaped joint (131), left side plate C-shaped groove (132), right side plate T-shaped joint (153) and right side plate C-shaped groove (154) are all installed in the bottom plate precast component (11), left side plate precast component (13) and right side plate precast component (15) respectively by casting and embedding.

5. The segmented prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly according to claim 3, characterized in that, A cover plate left mounting groove (138) is opened at the intersection of the top right side and the top of the right side surface of the left side plate prefabricated component (13), and a cover plate right mounting groove (158) is opened at the intersection of the top left side and the top of the left side surface of the right side plate prefabricated component (15). The trench segment (1) also includes a cover plate (17). The left and right sides of the cover plate (17) are placed in the cover plate left mounting groove (138) and the cover plate right mounting groove (158) respectively. The cover plate (17) is stably placed between the left side plate prefabricated component (13) and the right side plate prefabricated component (15) and is located above the bottom plate prefabricated component (11).

6. The segmented prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly according to claim 3, characterized in that, The assembly joint is a threaded self-locking joint (2), which includes a pre-embedded nut (21), a threaded screw (23) and a reserved bushing (25). The pre-embedded nuts (21) are installed at the front and rear ends of the bottom plate precast component (11), the left side plate precast component (13) and the right side plate precast component (15) by casting and embedding. The screw rod (23) is straight, and the two ends of the screw rod (23) are respectively connected to the pre-embedded nuts (21) in two adjacent trench sections (1); The reserved bushing (25) is installed on the outside of the middle section of the screw rod (23), and the reserved bushing (25) is made of plastic. or The assembly joint is a channel steel joint (4), which includes a pre-embedded channel steel (41) and a connecting bolt (43). The pre-embedded channel steel (41) is installed at the front and rear ends of the bottom plate precast component (11), the left side plate precast component (13) and the right side plate precast component (15) by casting and embedding. The connecting screw (43) is straight, and the two ends of the connecting screw (43) are respectively connected to the pre-embedded channel steel (41) in two adjacent trench sections (1).

7. A method for assembling a modular prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly as described in any one of claims 3-6, characterized in that, It includes the following steps: Step 1: Position the precast base plate (11) of the first trench segment (1) in place; Step 2: Push the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the first trench segment (1) along the jacking direction, i.e. from back to front, so that the left side plate T-type joint (131) is inserted into the bottom left C-type groove (111), the bottom left T-type joint (112) is inserted into the left side plate C-type groove (132), the right side plate T-type joint (153) is inserted into the bottom right C-type groove (113), and the bottom right T-type joint (114) is inserted into the right side plate C-type groove (154), so that the left side plate prefabricated part (13) and the right side plate prefabricated part (15) are respectively assembled on the left and right sides of the top surface of the bottom plate prefabricated part (11); Step 3: Connect the precast base plate component (11) of the second trench segment (1) to the rear side of the precast base plate component (11) of the first trench segment (1) using the assembly joint; Step 4: Push the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the second trench segment (1) along the jacking direction, so that the left side plate T-type joint (131) is inserted into the bottom left C-type groove (111), the bottom left T-type joint (112) is inserted into the left side plate C-type groove (132), the right side plate T-type joint (153) is inserted into the bottom right C-type groove (113), and the bottom right T-type joint (114) is inserted into the right side plate C-type groove (154), so that the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the second trench segment (1) are respectively assembled onto the left and right sides of the top surface of the bottom plate prefabricated part (11) of the second trench segment (1); The left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the second trench segment (1) are connected to the rear side of the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the first trench segment (1) by using the assembly joint, so as to realize the assembly connection between the second trench segment (1) and the first trench segment (1). Step 5: Repeat steps 3 to 4 to assemble and connect the remaining trench segments (1).

8. The assembly method of the prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly according to claim 7, characterized in that, A cover plate left mounting groove (138) is opened at the intersection of the top right side and the top of the right side surface of the left side plate prefabricated component (13), and a cover plate right mounting groove (158) is opened at the intersection of the top left side and the top of the left side surface of the right side plate prefabricated component (15). The trench segment (1) also includes a cover plate (17). The assembly method further includes step 6: placing the cover plate (17) of each trench segment (1) between its corresponding left side plate prefabricated part (13) and right side plate prefabricated part (15) and above its corresponding bottom plate prefabricated part (11).

9. The assembly method of the prefabricated rectangular pipe trench (100) adapted to automated mechanical assembly according to claim 7 or 8, characterized in that, The assembly joint is a threaded self-locking joint (2), which includes a pre-embedded nut (21), a threaded screw (23), and a reserved bushing (25). The pre-embedded nuts (21) are installed at the front and rear ends of the bottom plate precast component (11), the left side plate precast component (13) and the right side plate precast component (15) by casting and embedding. The screw rod (23) is straight, and the two ends of the screw rod (23) are respectively connected to the pre-embedded nuts (21) in two adjacent trench sections (1); The reserved bushing (25) is installed on the outside of the middle section of the screw rod (23), and the reserved bushing (25) is made of plastic. The specific process of step 3 is as follows: screw several threaded rods (23) into several pre-embedded nuts (21) of the bottom plate prefabricated part (11), the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the first trench segment (1), and install several reserved bushings (25). Tightly connect several pre-embedded nuts (21) at the front end of the bottom plate prefabricated part (11) of the second trench segment (1) with several threaded rods (23) at the rear end of the bottom plate prefabricated part (11) of the first trench segment (1). Step 4 is to realize the assembly and connection of the second trench segment (1) and the first trench segment (1) in the following specific process: several pre-embedded nuts (21) at the front end of the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the second trench segment (1) are fastened to several screw rods (23) at the rear end of the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the first trench segment (1); or The assembly joint is a channel steel joint (4), which includes a pre-embedded channel steel (41) and a connecting screw (43). The embedded channel steel (41) is installed at the front and rear ends of the bottom plate precast component (11), the left side plate precast component (13) and the right side plate precast component (15); The connecting screw (43) is straight, and the two ends of the connecting screw (43) are respectively connected to the pre-embedded channel steel (41) in two adjacent trench sections (1). The specific process of step 3 is as follows: screw several connecting bolts (43) into several embedded channel steels (41) of the base plate prefabricated component (11), the left side plate prefabricated component (13) and the right side plate prefabricated component (15), and fasten several embedded channel steels (41) at the front end of the base plate prefabricated component (11) of the second pipe trench segment (1) to several connecting bolts (43) at the rear end of the base plate prefabricated component (11) of the first pipe trench segment (1); Step 4 is to realize the assembly and connection of the second trench segment (1) and the first trench segment (1) in the following specific process: several embedded channel steels (41) at the front end of the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the second trench segment (1) are fastened to several connecting screws (43) at the rear end of the left side plate prefabricated part (13) and the right side plate prefabricated part (15) of the first trench segment (1).

Images