Movable supporting device for excavation of directly-buried pipeline groove

Abstract

The utility model relates to the technical field of directly-buried pipeline groove excavation of municipal engineering, in particular to a directly-buried pipeline groove excavation movable supporting device which comprises two oppositely-arranged vertical steel formworks, the faces, provided with ribs, of the two vertical steel formworks are both located on the inner side, and the faces, provided with ribs, of the two vertical steel formworks are both located on the outer side. Two supporting structures distributed in the left-right direction are arranged between the two vertical steel formworks, each supporting structure comprises a plurality of longitudinal hollow steel pipes distributed in the up-down direction, the two ends of each longitudinal hollow steel pipe are each provided with an inner insertion pipe in an inserted mode, and the tail end of each inner insertion pipe is fixedly connected with the inner side face of the corresponding vertical steel formwork. Two first through holes which are distributed up and down are formed in the side wall of each inner insertion pipe, and four second through holes which are in one-to-one correspondence with the four first through holes of the corresponding two inner insertion pipes and are matched with the four first through holes are formed in the side wall of each longitudinal hollow steel pipe; the problems of groove collapse, long construction period and high cost existing in an existing traditional excavation method of the directly-buried pipeline groove are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of direct buried pipeline trench excavation in municipal engineering, in particular to a direct buried pipeline trench excavation movable supporting device. Background Art

[0002] In municipal engineering, the traditional excavation methods for direct buried pipeline trenches are slope excavation or fixed support excavation.

[0003] However, practice has shown that the existing traditional excavation methods for direct buried pipeline trenches have the following problems: First, when slope excavation is carried out in areas with poor geology, the amount of earthwork for trench slope excavation is bound to increase, and there is also a risk of collapse, which leaves safety hazards for subsequent construction processes and increases construction costs; second, when fixed support excavation is carried out in areas with poor geology, although the amount of earthwork for slope excavation can be reduced, the installation and removal of fixed supports will undoubtedly extend the construction period and increase the costs of labor, equipment, and circulating materials; third, after the excavator trench is excavated, the side walls and bottom of the trench are rough and uneven, which reduces the installation efficiency of the direct buried pipeline in the trench.

[0004] Therefore, it is necessary to invent a mobile supporting device for direct buried pipeline trench excavation to solve the above problems. Utility Model Content

[0005] The utility model provides a mobile supporting device for excavating a direct buried pipeline trench in order to solve the problems of trench collapse, long construction period and high cost in the conventional excavation method for the existing direct buried pipeline trench.

[0006] The utility model is realized by adopting the following technical solutions:

[0007] A mobile support device for trench excavation of a direct buried pipeline comprises two vertical steel templates arranged opposite to each other, and the sides of the two vertical steel templates provided with ribs are both located on the inner side, and two groups of support structures distributed along the left and right sides are arranged between the two vertical steel templates, and each group of support structures comprises a plurality of longitudinal hollow steel pipes distributed along the upper and lower sides, and an inner insert pipe is inserted at both ends of each longitudinal hollow steel pipe, and the tail end of each inner insert pipe is fixedly connected to the inner side surface of the vertical steel template, and a rib is opened on the side wall of each inner insert pipe along the upper and lower sides. The steel template further comprises two first through holes of the cloth, and the side wall of each longitudinal hollow steel pipe is provided with four second through holes which correspond to and match the positions of the four first through holes of the corresponding two inner insert pipes one by one, and each inner insert pipe is fixedly connected to the corresponding longitudinal hollow steel pipe by vertical steel latches which penetrate and are inserted into the corresponding two first through holes and two second through holes; the steel template further comprises a traction structure, which comprises a pair of first ear plates which are oppositely arranged and fixed to the upper front ends of the two vertical steel templates, and the two first ear plates are connected by an iron chain.

[0008] Furthermore, a water pump is fixed to the top of the rear end of each vertical steel formwork.

[0009] Furthermore, the front ends of the two vertical steel formworks are jointly provided with a cutting and leveling structure, which includes a wedge-shaped side wall cutting vertical plate fixed to the front end of each vertical steel formwork, the height of each side wall cutting vertical plate is the same as the height of the vertical steel formwork, and a bottom surface leveling vertical plate is bolted between the lower parts of the two side wall cutting vertical plates, and the bottom end of the bottom surface leveling vertical plate is flush with the bottom end of the vertical steel formwork.

[0010] Furthermore, the water pump is a gasoline engine self-priming centrifugal water pump.

[0011] Furthermore, a pair of second ear plates arranged opposite to each other are fixed to the upper parts of the rear ends of the two vertical steel templates.

[0012] Furthermore, the bottom of each vertical steel formwork is wedge-shaped, being wider at the top and narrower at the bottom.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Improved construction safety and stability. The device uses vertical steel formwork to directly support the excavation surface, which not only effectively reduces the risk of trench side wall collapse, but also provides lateral stable support for the vertical steel formwork through a support structure composed of longitudinal hollow steel pipes, inner inserts and vertical steel pins, ensuring the stability of the entire device in the trench. Even in an environment with poor geological conditions, it can significantly reduce safety hazards, and solves the problem of increasing trench excavation volume due to slope excavation, effectively reducing costs.

[0015] 2. Improved construction efficiency and shortened construction period. Through the design of the traction structure, the first ear plate and the iron chain are used to achieve rapid movement of the device. There is no need for repeated disassembly and assembly during the movement, which greatly speeds up the speed of trench excavation and pipeline laying, effectively shortening the construction period of the entire project. The mobile design reduces the time and cost of fixed support installation and removal in traditional excavation methods, and improves the overall construction efficiency.

[0016] 3. To ensure the quality of the working surface and simplify subsequent work, the cutting and leveling structure can automatically level the side walls and bottom of the trench during the excavation process, reducing subsequent manual leveling work, improving the efficiency and quality of direct buried pipeline installation in the trench, and avoiding installation difficulties and potential quality problems caused by uneven trenches.

[0017] 4. Flexibility in dealing with special environments. The wedge-shaped design at the bottom of the device reduces friction resistance during excavation and improves adaptability under different soil conditions. The equipped gasoline self-priming centrifugal pump can quickly remove water from the trench to ensure a dry working surface and avoid construction delays caused by water accumulation. This function is particularly important in rainy seasons or areas with high groundwater levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural front view of the utility model.

[0019] Figure 2 It is a structural top view of the utility model.

[0020] Figure 3 It is a structural side view of the utility model.

[0021] 1. Vertical steel formwork; 2. Longitudinal hollow steel pipe; 3. Inner pipe; 4. Vertical steel latch; 5. First ear plate; 6. Iron chain; 7. Water pump; 8. Side wall cutting vertical plate; 9. Bottom scraping vertical plate; 10. Second ear plate. DETAILED DESCRIPTION

[0022] A mobile support device for trench excavation of direct buried pipelines, as shown in the attached Figure 1 ~Attached Figure 3 As shown, it includes two vertical steel templates 1 arranged opposite to each other, and the sides of the two vertical steel templates 1 provided with ribs are both located on the inner side, and two groups of support structures distributed along the left and right are arranged between the two vertical steel templates 1, and each group of support structures includes a plurality of longitudinal hollow steel pipes 2 distributed along the upper and lower sides, and an inner insert pipe 3 is inserted at both ends of each longitudinal hollow steel pipe 2, and the tail end of each inner insert pipe 3 is fixedly connected to the inner side surface of the vertical steel template 1, and the side wall of each inner insert pipe 3 is provided with two first through holes distributed along the upper and lower sides. Holes, four second through holes corresponding to and matching the positions of the four first through holes of the corresponding two inner insert pipes 3 are opened on the side wall of each longitudinal hollow steel pipe 2, each inner insert pipe 3 is fixedly connected to the corresponding longitudinal hollow steel pipe 2 by a vertical steel pin 4 inserted through the corresponding two first through holes and two second through holes; it also includes a traction structure, the traction structure includes a pair of oppositely arranged first ear plates 5 fixed to the upper front end of the two vertical steel templates 1, and the two first ear plates 5 are connected by an iron chain 6.

[0023] The combination of the movable vertical steel formwork 1 and the supporting structure in the utility model provides temporary and stable support for trench excavation. The vertical steel formwork 1 is used to directly support the excavation surface to reduce the risk of trench side wall collapse. The supporting structure composed of the longitudinal hollow steel pipe 2, the inner insert pipe 3, and the vertical steel latch 4 can provide reliable lateral support for the two vertical steel formworks 1, ensuring the stability of the device in the trench. At the same time, the fixing method of the vertical steel latch 4 can be conveniently and quickly assembled and adjusted; the design of the traction structure composed of the first ear plate 5 and the iron chain 6 is convenient for the use of mechanical equipment to pull the device as a whole, so that the device can be moved along the trench direction without repeated disassembly and assembly, which greatly improves the working efficiency, effectively shortens the construction period, and shows significant advantages in economy, especially in construction in areas with poor geological conditions, the benefits are more obvious.

[0024] As attached Figure 1 ~Attached Figure 3 As shown, a water pump 7 is fixed to the top of the rear end of each vertical steel formwork 1.

[0025] The water pump 7 is a gasoline engine self-priming centrifugal water pump.

[0026] Gasoline self-priming centrifugal pumps are convenient for quickly extracting accumulated water in the trench, keeping the working surface dry and avoiding the impact of accumulated water on construction progress and safety. At the same time, it also reduces the problem of space occupied by traditional drainage equipment.

[0027] As attached Figure 1 ~Attached Figure 3 As shown, the front ends of the two vertical steel formworks 1 are jointly provided with a cutting and leveling structure, which includes a wedge-shaped side wall cutting vertical plate 8 fixed to the front end of each vertical steel formwork 1, the height of each side wall cutting vertical plate 8 is the same as the height of the vertical steel formwork 1, and a bottom surface leveling vertical plate 9 is commonly bolted between the lower parts of the two side wall cutting vertical plates 8, and the bottom end of the bottom surface leveling vertical plate 9 is flush with the bottom end of the vertical steel formwork 1.

[0028] The cutting and leveling structure composed of the side wall cutting vertical plate 8 and the bottom surface leveling vertical plate 9 is located at the front end of the vertical steel template 1. It ensures the flatness of the side walls and bottom surface of the groove through cutting and leveling actions, reduces subsequent manual leveling work, and improves the installation efficiency and quality of direct buried pipelines.

[0029] As attached Figure 1 ~Attached Figure 2 As shown, a pair of second ear plates 10 arranged opposite to each other are fixed to the upper rear ends of the two vertical steel templates 1 .

[0030] The structural design of the second ear plate 10 can be used as an auxiliary fixing point or an additional traction connection point, which can enhance the overall stability of the device or provide additional traction options when hoisting the vertical steel formwork 1.

[0031] As attached Figure 3 As shown, the bottom of each vertical steel formwork 1 is wedge-shaped with a wide top and a narrow bottom.

[0032] The bottom of the vertical steel formwork 1 is designed in a wedge shape with a width at the top and a narrowness at the bottom, which helps to reduce the friction resistance during trench excavation.

[0033] The utility model is implemented by the following steps when in use:

[0034] Step 1: According to the designed groove size, two vertical steel templates 1 welded with inner insert pipe 3, first ear plate 5, pump 7, side wall cutting vertical plate 8, and second ear plate 10 are fixed at the construction site through the combination of longitudinal hollow steel pipe 2, inner insert pipe 3 and vertical steel latch 4. After ensuring the stability of the structure, bolt the bottom surface of the vertical plate 9 to be leveled, and then place the assembled device at the preset groove excavation starting point;

[0035] Step 2: Use an excavator to perform preliminary trench excavation. After the first working section is excavated so that its width and depth meet the preset requirements, the two first ear plates 5 are connected by an iron chain 6, and then the excavator is used to slowly pull the device into the trench through the iron chain 6;

[0036] Step 3: Use an excavator to slowly pull the device through the iron chain 6 to move forward along the excavation direction of the trench. During the movement, the smooth side of the vertical steel template 1 fits against the trench wall of the excavated trench to reduce friction resistance. As the device moves, the cutting and leveling structure automatically acts on the newly exposed trench side walls and bottom surface to keep the trench shape flat and reduce subsequent processing work;

[0037] Step 4: When the device reaches the end of the first working section and stops moving, the two vertical steel templates 1 play a temporary supporting role, and the pipeline laying of the working section can be carried out at this time;

[0038] Step 5: After the pipeline in the first section of the trench is laid, the excavator can be used to dig the trench of the second working section. After the trench excavation of the second working section is completed, the excavator is used to slowly pull the device along the excavation direction of the trench through the iron chain 6 until it stops at the end of the second working section. At this time, the two vertical steel templates 1 play a temporary support role, and the pipeline of this working section can be laid;

[0039] Step 6: Repeat step 5 to carry out trench excavation, support and pipeline laying of the third working section and the fourth working section in turn, and so on until the entire excavation, support and pipeline laying of the predetermined trench are completed. When groundwater or rainwater is encountered during trench excavation, the pump 7 on the device is started for immediate drainage to ensure that the working surface is dry and does not affect the construction progress. Finally, the device is dismantled and recycled, thereby completing the use of the device; the problems of trench collapse, long construction period and high cost existing in the traditional excavation method of the existing direct buried pipeline trench are overcome.

[0040] In the specific implementation process, the vertical steel formwork 1 is made of a steel plate with a thickness of 20mm and a model of Q235. The height of the vertical steel formwork 1 is determined according to the trench excavation depth and needs to be 300mm higher than the trench excavation depth. The length of the vertical steel formwork 1 is 4000mm and the width is 100mm; the wall thickness of the longitudinal hollow steel pipe 2 is 20mm and the diameter is 240mm. The length of the longitudinal hollow steel pipe 2 is determined according to the excavation width of the trench; the diameter of the vertical steel pin 4 is 40mm, The length is 300mm; the first ear plate 5 and the second ear plate 10 are both made of Q235 steel plate, and the thickness of the first ear plate 5 and the second ear plate 10 are both 20mm, the length is 200mm, and the width is 200mm; the pump 7 is a gasoline engine self-priming centrifugal pump with a head of 19m and a flow rate of 51m³ / h; the bottom surface scraping vertical plate 9 is made of Q235 steel plate, and the thickness of the bottom surface scraping vertical plate 9 is 20mm and the height is 120mm.

[0041] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile support device for trench excavation of direct buried pipelines, characterized in that: The invention comprises two vertical steel templates (1) arranged opposite to each other, wherein the sides of the two vertical steel templates (1) provided with ribs are both located on the inner side, and two groups of support structures distributed along the left and right sides are arranged between the two vertical steel templates (1), and each group of support structures comprises a plurality of longitudinal hollow steel pipes (2) distributed along the upper and lower sides, and each longitudinal hollow steel pipe (2) is provided with an inner insert pipe (3) at both ends, and the tail end of each inner insert pipe (3) is fixedly connected to the inner side surface of the vertical steel template (1), and each inner insert pipe (3) is provided with two first through holes distributed along the upper and lower sides on the side wall, The side wall of each longitudinal hollow steel pipe (2) is provided with four second through holes which correspond to and match the positions of the four first through holes of the corresponding two inner insert pipes (3), and each inner insert pipe (3) is fixedly connected to the corresponding longitudinal hollow steel pipe (2) via a vertical steel latch (4) inserted through the corresponding two first through holes and two second through holes; the traction structure also includes a traction structure, which includes a pair of first ear plates (5) which are oppositely arranged and fixed to the upper front ends of the two vertical steel templates (1), and the two first ear plates (5) are connected via an iron chain (6).

2. A mobile support device for trench excavation of direct buried pipelines according to claim 1, characterized in that: A water pump (7) is fixed to the top of the rear end of each vertical steel formwork (1).

3. A mobile support device for trench excavation of direct buried pipelines according to claim 1, characterized in that: The front ends of the two vertical steel templates (1) are jointly provided with a cutting and leveling structure, which comprises a wedge-shaped side wall cutting vertical plate (8) fixed to the front end of each vertical steel template (1), the height of each side wall cutting vertical plate (8) is the same as the height of the vertical steel template (1), and a bottom surface leveling vertical plate (9) is bolted between the lower parts of the two side wall cutting vertical plates (8), and the bottom end of the bottom surface leveling vertical plate (9) is flush with the bottom end of the vertical steel template (1).

4. A mobile support device for trench excavation of direct buried pipelines according to claim 2, characterized in that: The water pump (7) is a gasoline engine self-priming centrifugal water pump.

5. The mobile support device for trench excavation of direct buried pipelines according to claim 1 is characterized in that: A pair of second ear plates (10) arranged opposite to each other are fixed to the upper parts of the rear ends of the two vertical steel templates (1).

6. The mobile support device for trench excavation of direct buried pipelines according to claim 1, characterized in that: The bottom of each vertical steel formwork (1) is in a wedge shape that is wide at the top and narrow at the bottom.

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