Modularized adjustable breast board device for pipeline mounting groove

By using a modular design and mortise and tenon joint connection for the retaining plate device, combined with hydraulic support rods and a depth adjustment mechanism, the problems of low installation efficiency and poor stability of existing retaining plates in pipeline installation trenches have been solved, achieving efficient and stable retaining construction.

CN224148732UActive Publication Date: 2026-04-21CHINA RAILWAY FIRST GROUP CO LTD +4
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY FIRST GROUP CO LTD
Filing Date
2025-04-27
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing retaining walls in pipeline installation trenches suffer from low installation efficiency, poor stability, and serious resource waste. In particular, the cross braces are not easy to adjust, the fixing depth is not adjustable, the connection between retaining walls is not tight, and the structure is unstable.

Method used

Adopting a modular design, the retaining plates are connected by mortise and tenon joints, combined with hydraulic support rods and a depth adjustment mechanism, to achieve rapid splicing and stable support of the retaining plates, adapting to pipeline installation trenches of different widths.

Benefits of technology

It improves the installation efficiency and stability of retaining walls, reduces resource waste, is suitable for pipe installation trenches of various widths, and avoids the reduction in efficiency due to geological conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a modularized adjustable breast board device for a pipeline installation groove, which comprises a plurality of breast board assemblies, and each breast board assembly comprises two breast boards and a cross arm mechanism; every two adjacent soil retaining plates are connected through a mortise and tenon joint structure, a fixed base is arranged at the bottom of each soil retaining plate, and a depth adjusting mechanism is arranged on each soil retaining plate. According to the utility model, the depth of the fixed base at the bottom of the breast board is adjusted through the depth adjusting mechanism, so that the fixed depth of the bottom of the breast board can be changed according to a specific construction scene; every two adjacent soil retaining plates are connected through a mortise and tenon joint structure, rapid longitudinal splicing of multiple plates can be achieved, the situation that a fence is not tight is avoided, and the stability and the installation efficiency of the soil retaining plate device are improved. The soil retaining plate device is suitable for soil retaining construction of pipeline installation grooves with various widths, the utilization rate of the soil retaining plate device is increased, and resource waste is avoided.
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Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a modular adjustable retaining plate device for pipeline installation trenches. Background Technology

[0002] Retaining boards are not formwork; they are temporary retaining structures used to prevent the collapse of excavated soil in trenches and foundation pits. They typically consist of support boards and cross braces, and are commonly made of steel, wood, or bamboo. Wooden retaining boards are made of 4-7cm thick planks, while bamboo and steel retaining boards use bamboo scaffolding boards, steel formwork, or steel plates or channel steel, respectively. Based on the material used for the cross braces, they can be divided into wooden supports and iron supports. Wooden supports use round or square logs for the cross braces, while iron supports use specialized iron support legs as cross braces.

[0003] Especially during pipeline laying, retaining walls are needed to hold back the soil on both sides of the trench to facilitate construction inside the trench. Current retaining walls consist of two support plates and a cross brace. The two support plates are attached to the two side walls of the trench, and the cross brace in the middle is used to fix them and prevent the soil on both sides of the trench from loosening. However, when using this type of retaining wall, the traditional cross brace is inconvenient to adjust, requiring on-site measurement and cutting, resulting in low installation efficiency. This limits the application scenarios of the retaining wall, easily leading to situations where the retaining wall cannot be reused multiple times. Its poor applicability causes resource waste. Furthermore, the traditional cross brace... Poor rigidity makes them susceptible to deformation due to soil pressure. On the one hand, the trenches requiring enclosure are usually quite long, and the retaining boards on the same side need to be supported and fixed in sections. However, the sections of retaining boards are often not connected, but only tightly attached, resulting in inadequate enclosure. On the other hand, the lack of a fixed structure at the bottom during installation makes the retaining board structure unstable and prone to tilting. Even if some retaining boards have fixing devices at the bottom, the position of the fixing devices cannot be adjusted, making it impossible to reasonably change the fixing depth of the retaining board, thus affecting the efficiency of the retaining board. Utility Model Content

[0004] The technical problem this utility model aims to solve is to address the shortcomings of the existing technology by providing a modular adjustable retaining wall device for pipeline installation trenches. The depth of the fixed base at the bottom of the retaining wall is adjustable via a depth adjustment mechanism, allowing the fixed depth of the retaining wall to be changed according to the specific construction scenario. This prevents the efficiency of the retaining wall device from being reduced due to geological conditions. Adjacent retaining walls are connected by a mortise and tenon structure, enabling rapid longitudinal splicing of multiple walls and avoiding incomplete enclosure, thus improving the stability and installation efficiency of the retaining wall device. Hydraulic support rods allow for reasonable and effective adjustment of the support between two retaining walls, eliminating the need for on-site measurement and cutting, further improving installation efficiency. Furthermore, the combination of hydraulic support rods and installation joints for support makes the device less susceptible to deformation due to soil pressure and avoids issues related to the width of the pipeline installation trench, thus enabling its use in retaining wall construction for pipeline installation trenches of various widths, improving the utilization rate of the retaining wall device and avoiding resource waste.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a modular adjustable retaining plate device for pipeline installation trenches, characterized in that: it includes multiple retaining plate assemblies arranged along the extension direction of the pipeline installation trench, adjacent two retaining plate assemblies are connected by a tenon and mortise structure, each retaining plate assembly includes two retaining plates symmetrically arranged in the pipeline installation trench and a horizontal support mechanism arranged between the two retaining plates, and the retaining plates and the horizontal support mechanism are detachably connected;

[0006] The two adjacent retaining plates are connected by a mortise and tenon structure. The retaining plates are vertically arranged in the pipe installation trench, and one side of the retaining plate is in close contact with the side wall of the pipe installation trench. A fixed base is provided at the bottom of the retaining plate, and a depth adjustment mechanism for adjusting the position of the fixed base is provided on the retaining plate.

[0007] The cross bracing mechanism includes multiple cross bracing components evenly distributed between the two retaining plates. The multiple cross bracing components have the same structure. Each cross bracing component includes a hydraulic support rod horizontally arranged between the two retaining plates. The end of the hydraulic support rod is installed on the retaining plate through a mounting joint.

[0008] The above-mentioned modular adjustable retaining plate device for pipeline installation trenches is characterized in that: the retaining plate is a rectangular plate or an arc plate.

[0009] The above-mentioned modular adjustable retaining plate device for pipeline installation trenches is characterized in that: the depth adjustment mechanism includes an adjustment motor disposed on the top of the retaining plate, a screw is connected to the output shaft of the adjustment motor, a connecting pipe is threaded on the wall of the screw, and the fixed base is fixed to the bottom of the connecting pipe.

[0010] The above-mentioned modular adjustable retaining plate device for pipeline installation trenches is characterized in that: multiple installation joints are provided on the side of the retaining plate, and the multiple installation joints are evenly distributed on the retaining plate.

[0011] The above-mentioned modular adjustable retaining plate device for pipeline installation trenches is characterized in that: the fixed base is a conical structure, and the outer side of the fixed base is wrapped with helical blades.

[0012] This utility model has the following advantages compared with the prior art:

[0013] 1. This utility model adjusts the depth of the fixed base at the bottom of the retaining plate through a depth adjustment mechanism, so that the fixing depth at the bottom of the retaining plate can be changed according to the specific construction scenario, and the efficiency of the retaining plate device will not be reduced due to geological conditions or other factors.

[0014] 2. In this utility model, two adjacent retaining plates are connected by a mortise and tenon structure, which can realize the rapid longitudinal splicing of multiple plates, avoid the situation of incomplete enclosure, and improve the stability and installation efficiency of this retaining plate device.

[0015] 3. This utility model allows for reasonable and effective adjustment of the support between two retaining plates using hydraulic support rods, eliminating the need for on-site measurement and cutting, thus improving installation efficiency. Furthermore, the combination of hydraulic support rods and installation joints makes the retaining plate device less susceptible to deformation due to soil pressure and avoids issues arising from the width of the pipeline installation trench, making it suitable for retaining construction in pipeline installation trenches of various widths. This improves the utilization rate of the retaining plate device and avoids resource waste.

[0016] In summary, this utility model adjusts the depth of the fixed base at the bottom of the retaining plate through a depth adjustment mechanism, allowing the fixing depth of the bottom of the retaining plate to be changed according to the specific construction scenario; the adjacent retaining plates are connected by a mortise and tenon structure, enabling rapid longitudinal splicing of multiple plates, avoiding incomplete enclosure, and improving the stability and installation efficiency of this retaining plate device; it is suitable for retaining construction of pipeline installation trenches of various widths, improving the utilization rate of this retaining plate device and avoiding resource waste.

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a diagram showing the usage state of this utility model.

[0019] Figure 2 This is a side view of the retaining plate of this utility model.

[0020] Figure 3 This is a schematic diagram of the depth adjustment mechanism of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1—Pipe installation trench; 2—Soil retaining plate; 3—Fixed base;

[0023] 4—Adjusting motor; 5—Screw; 6—Connecting pipe;

[0024] 7—Hydraulic support rod; 8—Mounting connector. Detailed Implementation

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model includes multiple retaining plate assemblies arranged along the extension direction of the pipeline installation trench 1. Adjacent retaining plate assemblies are connected by a tenon and mortise structure. Each retaining plate assembly includes two retaining plates 2 symmetrically arranged in the pipeline installation trench 1 and a horizontal support mechanism arranged between the two retaining plates 2. The retaining plates 2 and the horizontal support mechanism are detachably connected.

[0026] The two adjacent retaining plates 2 are connected by a tenon and mortise structure. The retaining plates 2 are vertically arranged in the pipe installation trench 1, and one side of the retaining plate 2 is in close contact with the side wall of the pipe installation trench 1. A fixed base 3 is provided at the bottom of the retaining plate 2, and a depth adjustment mechanism for adjusting the position of the fixed base 3 is provided on the retaining plate 2.

[0027] The cross bracing mechanism includes multiple cross bracing components evenly distributed between the two retaining plates 2. The multiple cross bracing components have the same structure. Each cross bracing component includes a hydraulic support rod 7 horizontally arranged between the two retaining plates 2. The end of the hydraulic support rod 7 is installed on the retaining plate 2 through a mounting joint 8.

[0028] In actual use, the depth of the fixed base 3 at the bottom of the retaining plate 2 is adjusted by the depth adjustment mechanism, so that the fixed depth at the bottom of the retaining plate 2 can be changed according to the specific construction scenario, and the efficiency of the retaining plate device will not be reduced due to geological conditions or other factors.

[0029] The adjacent retaining plates 2 are connected by a mortise and tenon structure, which enables rapid longitudinal splicing of multiple plates, avoids the situation of incomplete enclosure, and improves the stability and installation efficiency of this retaining plate device.

[0030] In addition, the hydraulic support rod 7 allows for reasonable and effective adjustment of the support between the two retaining plates 2, eliminating the need for on-site measurement and cutting, thus improving installation efficiency. Furthermore, the combination of the hydraulic support rod 7 and the installation joint 8 for support makes it less susceptible to deformation due to soil pressure and avoids issues related to the width of the pipeline installation trench 1, which could affect the use of this retaining plate device. It is suitable for retaining construction in pipeline installation trenches 1 of various widths, improving the utilization rate of this retaining plate device and avoiding resource waste.

[0031] It should be noted that the hydraulic support rod 7 can extend and retract horizontally, and its two ends are connected to the retaining plate 2 through the installation joint 8 to ensure the overall stability of the retaining plate device and meet the safety requirements of trench excavation construction.

[0032] In this embodiment, the retaining plate 2 is a rectangular plate or an arc plate.

[0033] In actual use, the retaining plate 2 has two shapes: rectangular plate or arc plate. The rectangular plate can be applied to the straight section of the pipe installation trench 1, and the arc plate can be applied to the section of the pipe installation trench 1 that needs to be bent.

[0034] like Figure 3 As shown, in this embodiment, the depth adjustment mechanism includes an adjustment motor 4 disposed on the top of the retaining plate 2, a screw 5 connected to the output shaft of the adjustment motor 4, a connecting pipe 6 threaded on the wall of the screw 5, and the fixed base 3 fixed to the bottom of the connecting pipe 6.

[0035] In actual use, the retaining plate 2 has a vertical channel inside, and the screw 5 and the connecting pipe 6 are installed in the channel. The adjusting motor 4 drives the screw 5 to rotate, so that the connecting pipe 6, which is threaded to the screw 5, moves downward or upward along the channel, and drives the fixed base 3 at the bottom of the connecting pipe 6 to move downward or upward as well, thereby achieving the purpose of adjusting the depth of the fixed base 3 into the soil and realizing the adjustment of the fixed depth.

[0036] like Figure 2 As shown in this embodiment, a plurality of mounting joints 8 are provided on the side of the retaining plate 2, and the plurality of mounting joints 8 are evenly distributed on the retaining plate 2.

[0037] In actual use, the mounting joint 8 is a universal joint, which can be adjusted in combination with the support direction of the hydraulic support rod 7 and the installation direction of the retaining plate 2.

[0038] In this embodiment, the fixed base 3 has a conical structure, and the outer side of the fixed base 3 is wrapped with helical blades.

[0039] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A modular adjustable retaining board apparatus for pipe installation trenching, characterised in that: It includes multiple retaining plate assemblies arranged along the extension direction of the pipeline installation trench (1), and two adjacent retaining plate assemblies are connected by a tenon and mortise structure. Each retaining plate assembly includes two retaining plates (2) symmetrically arranged in the pipeline installation trench (1) and a horizontal bracing mechanism arranged between the two retaining plates (2). The retaining plates (2) and the horizontal bracing mechanism are detachably connected. The two adjacent retaining plates (2) are connected by a tenon and mortise structure. The retaining plates (2) are vertically arranged in the pipe installation trench (1), and one side of the retaining plate (2) is in close contact with the side wall of the pipe installation trench (1). A fixed base (3) is provided at the bottom of the retaining plate (2), and a depth adjustment mechanism for adjusting the position of the fixed base (3) is provided on the retaining plate (2). The cross bracing mechanism includes multiple cross bracing components evenly distributed between the two retaining plates (2). The structures of the multiple cross bracing components are all the same. Each cross bracing component includes a hydraulic support rod (7) horizontally arranged between the two retaining plates (2). The end of the hydraulic support rod (7) is installed on the retaining plate (2) through a mounting joint (8).

2. A modular adjustable retaining panel apparatus for use in trenching for pipe installation according to claim 1, wherein: The retaining plate (2) is a rectangular plate or an arc plate.

3. A modular adjustable retaining panel apparatus for use in trenching for pipe installation according to claim 1, wherein: The depth adjustment mechanism includes an adjustment motor (4) installed on the top of the retaining plate (2), a screw (5) connected to the output shaft of the adjustment motor (4), a connecting pipe (6) threaded on the wall of the screw (5), and the fixed base (3) fixed to the bottom of the connecting pipe (6).

4. A modular adjustable retaining panel apparatus for use in trenching for pipe installation according to claim 1, wherein: The retaining plate (2) is provided with multiple installation joints (8) on its side, and the multiple installation joints (8) are evenly distributed on the retaining plate (2).

5. A modular adjustable retaining panel apparatus for use in a pipe installation trench according to claim 1, wherein: The fixed base (3) has a conical structure, and the outer side of the fixed base (3) is wrapped with helical blades.