CN115369979A - Construction device and construction method for large-diameter drainage pipeline in limited space - Google Patents

Abstract

The invention relates to a construction device and construction method for a large-diameter drainage pipeline in a confined space. The construction device for a large-diameter drainage pipeline in a confined space includes a guide rail and a sliding bracket, and the sliding bracket includes a main beam. Sliding sleeves are respectively provided at both ends, and guide wheels are respectively provided on the front and rear sides of the sliding sleeves. The guide wheels are used to walk on the guide rails, and two brackets are provided in the middle of the upper side of the main beam. The top of the bracket is an inclined arc-shaped supporting plate, and the two arc-shaped supporting plates are arranged in an inverted splayed shape. In the construction method of the present invention, guide rails are set in the drainage pipe groove, and the pipe is transferred through the sliding bracket, so as to realize the reverse installation and construction of the pipeline, and change the reverse transportation of the pipeline from outside the groove to inside the groove, so that the hoisting point is fixed Near the component loading area. The invention can carry out pipeline construction in areas with limited space, has low cost, high construction efficiency, and can ensure construction quality.

Description

Confined space large-diameter drainage pipeline construction device and construction method

technical field

The invention relates to a drainage pipe construction technology, in particular to a large-diameter drainage pipeline construction device and construction method in a confined space.

Background technique

In municipal drainage projects, open cut and direct burial are generally used, and the pipes are mostly prefabricated concrete pipes, and slope gravity discharge is set. During the construction process, there are high requirements for safe construction, elevation and pipeline sealing, among which rainwater pipelines may involve pipes with an inner diameter of more than d2000mm Large diameter precast concrete pipes. Due to the large volume and weight of large-diameter prefabricated concrete drainage pipes, it is difficult to construct in the construction process of water supply and drainage projects, mainly reflected in the difficulty of reverse lifting and the difficulty of controlling the elevation of the pipe bottom, which makes it difficult to ensure the construction quality. At the same time, the installation process There are many risk factors. Conventional construction methods mostly use cars to transport the components back to the hoisting point outside the pipeline installation location, and use large truck cranes or crawler cranes to hoist the components to the installation location for hoisting, and some projects can also be hoisted by gantry crane equipment. However, in the case of old city reconstruction or limited construction area, the above construction methods may not be applicable.

Contents of the invention

The object of the present invention is to provide a construction device and construction method for a large-diameter drainage pipeline in a confined space, so as to solve the problem of difficult construction of a large-diameter drainage pipeline in a confined space.

The present invention is achieved in the following way: a large-diameter drainage pipeline construction device in a confined space, including a guide rail and a sliding bracket, the sliding bracket includes a main beam, sliding sleeves are respectively arranged at both ends of the main beam, and The front and rear sides of the sliding sleeve are provided with guide wheels respectively, and the guide wheels are used for walking on the guide rail. Two brackets are arranged in the middle of the upper side of the main beam, and the top of the brackets is Inclined arc-shaped supporting plates, the two arc-shaped supporting plates are arranged in an inverted splayed shape.

A number of adjustment holes are evenly distributed in an array on the top surface of the main beam, and the sliding sleeve and the bracket are fixed on the corresponding adjustment holes by bolts.

The invention also discloses a construction method of a large-diameter drainage pipeline in a confined space, which includes the following steps:

a. According to the requirements of the construction drawings and standard atlas, excavate the drainage pipeline trench, make two strip foundations along the pipeline moving direction on the bottom surface of the drainage pipeline trench, and set embedded parts on the upper plane of the strip foundation.

b. After the strip foundation is prefabricated and the strength meets the construction requirements, guide rails are fixed and installed on the top of the strip foundation through embedded parts.

c. Place at least two groups of sliding brackets on the guide rails, the sliding brackets include a main beam, sliding sleeves are respectively arranged at both ends of the main beam, and guide wheels are respectively arranged on the front and rear sides of the sliding sleeves , the guide wheels are used to walk on the guide rails, two brackets are arranged in the middle of the upper side of the main beam, the top of the brackets is an inclined arc-shaped pallet, and the two arc-shaped The pallets are arranged in an inverted figure-eight shape.

d. Place the prefabricated pipe support according to the coordinates of the pipe interface points, and first place the pipe support flat on the bottom surface of the drainage pipe groove.

e. Move the sliding bracket to the component loading area, place the pipe on the sliding bracket, and pull the pipe through the traction device to move the pipe to the installation point.

f. Use a jack to lift the pipeline, and set the pipeline support under the front and rear ends of the pipeline.

g. After the pipe support is installed in place, remove the drag seat on one side of the sliding bracket, move the sliding bracket from the installed section to the component loading area, re-fix the drag seat on the sliding bracket and proceed to the next section of pipeline unlucky installation.

h. After all piping is installed, remove the sliding brackets and pour concrete piping foundations.

The sliding brackets are fixedly connected by connecting rods to form a square frame.

The guide rail is an angle steel, and the angle steel is buckled on the top of the strip foundation and fixed by welding with the embedded part.

In step h, when pouring the concrete pipeline foundation, the original strip foundation and the pipeline support are poured into the pipeline foundation together.

On the top surface of the main beam of the sliding bracket, a number of adjustment holes are evenly distributed in an array, and the sliding sleeve and the bracket are fixed on the corresponding adjustment holes by bolts; the two brackets are adjusted according to the diameter of the pipeline The distance between the two sliding sleeves is adjusted according to the distance between the strip foundations.

The construction device for a large-diameter drainage pipeline in a confined space of the present invention includes a guide rail and a sliding bracket, the sliding bracket is used to support the pipeline, and the sliding bracket can move along the guide rail so as to transfer the pipeline.

The guide wheels are installed on the sliding sleeve, and the front and rear sides of the sliding sleeve are equipped with guide wheels, so that the sliding bracket can support the pipe stably, and the position of the sliding sleeve can be adjusted to adapt to guide rails with different spacings. At the same time, the bracket The position can also be adjusted to suit drainage pipes of different diameters.

In the construction method of the large-diameter drainage pipeline in a confined space of the present invention, the above-mentioned device is used to transport the pipelines backwards. All the pipelines are placed on the sliding brackets in the component loading area, and are transported to the installation position by the sliding brackets. Only the prefabricated The pipeline can be transported outside the component loading area, and the hoisting equipment only needs to carry out hoisting work near the component loading area. After the pipeline is lifted up, the pipeline support is installed. The pipeline support is prefabricated and can accurately control the pipeline. elevation.

In the present invention, since the hoisting area is fixed, it is only necessary to have enough space in the hoisting area to accommodate the hoisting equipment and transportation equipment. It is reversed to the predetermined installation location, and the transshipment operation on the ground is transferred to the transshipment operation under the ground.

The sliding bracket can be disassembled and assembled conveniently, can be used repeatedly, can be adjusted, has a wide range of applications, and reduces construction costs.

Description of drawings

Fig. 1 is a structural diagram of the sliding bracket of the present invention.

Fig. 2 is a structural view of the sliding bracket of the present invention placed on the guide rail.

Fig. 3 is a schematic diagram of the construction method of the present invention.

In the figure: 1, sliding bracket; 2, guide rail; 3, strip foundation; 4, pipe support; 5, pipe; 6, groove; 1-1, main beam; 3. Guide wheel; 1-4, bracket; 1-5, arc supporting plate; 1-6, adjustment hole.

Detailed ways

As shown in Figures 1 and 2, the large-diameter drainage pipeline construction device in a confined space of the present invention includes a guide rail 2 and a sliding bracket 1, and the sliding bracket 1 moves on the guide rail 2 along the direction of the guide rail 2, so as to be placed on the The pipeline 5 on the sliding carriage 1 is transferred.

Sliding bracket 1 comprises main beam 1-1, is respectively provided with sliding sleeve 1-2 at the two ends of main beam 1-1, is respectively provided with guide wheel 1-3 at the front and rear sides of sliding sleeve 1-2, and guide wheel 1-3 is used for walking on guide rail 2, is provided with two brackets 1-4 in the middle part of the upper side of main beam 1-1, and the top of bracket 1-4 is the inclined arc supporting plate 1-5, two The arc supporting plates 1-5 are arranged in an inverted splayed shape.

The main girder 1-1 is I-shaped steel, and a number of reinforcing ribs are arranged between the upper and lower side plates of the I-shaped steel, thereby increasing the structural strength of the entire main girder 1-1.

The sliding sleeve 1-2 is rectangular, and the rectangular sliding sleeve 1-2 can just fit on the main beam 1-1, and can move along the main beam 1-1 to adjust its position.

On the top surface of the main beam 1-1, a number of adjustment holes 1-6 are evenly distributed in an array, and the sliding sleeve 1-2 and the bracket 1-4 are fixed on the corresponding adjustment holes 1-6 by bolts. When assembling, according to It is necessary to determine the positions of the sliding sleeve 1-2 and the bracket 1-4, and then use bolts to fix them on the adjusting hole 1-6.

The large-diameter drainage pipeline construction device in a confined space of the present invention includes a guide rail 2 and a sliding bracket 1 , the sliding bracket 1 is used to support the pipeline 5 , and the sliding bracket 1 can move along the guide rail 2 to transfer the pipeline 5 .

The guide wheel 1-3 is installed on the sliding sleeve 1-2, and the front and rear sides of the sliding sleeve 1-2 are equipped with guide wheels 1-3, so that the sliding bracket 1 can stably support the pipeline 5, and the sliding sleeve 1-2 The position can be adjusted to adapt to guide rails 2 with different spacings, and at the same time, the positions of brackets 1-4 can also be adjusted to adapt to drainage pipes 5 with different diameters.

As shown in FIG. 3 , the construction method of a large-diameter drainage pipeline in a confined space of the present invention includes the following steps.

a. Excavate drainage pipeline 5 groove 6 according to the requirements of construction drawings and standard atlas, make two strip foundations 3 along the moving direction of pipeline 5 on the bottom surface of drainage pipeline 5 groove 6, and set them on the upper plane of strip foundation 3 Embedded parts.

b. After the strip foundation 3 is prefabricated and the strength meets the construction requirements, the guide rail 2 is fixed and installed on the top of the strip foundation 3 through embedded parts.

c. Place at least two sets of sliding brackets 1 on the guide rail 2. The sliding bracket 1 includes a main beam 1-1, and sliding sleeves 1-2 are respectively arranged at both ends of the main beam 1-1. Guide wheels 1-3 are respectively arranged on the front and rear sides of the main beam 1-1. The top of 4 is an inclined arc supporting plate 1-5, and the two arc supporting plates 1-5 are arranged in an inverted splayed shape.

d. Place the prefabricated pipe support 4 according to the coordinates of the interface points of the pipe 5 , and first place the pipe support 4 flat on the bottom surface of the drainage pipe 5 groove 6 .

e. Move the sliding bracket 1 to the component loading area, place the pipeline 5 on the sliding bracket 1, and pull the pipeline 5 through the traction device to move the pipeline 5 to the installation point.

f. Use a jack to lift the pipeline 5, and set the pipeline support 4 under the front and rear ends of the pipeline 5.

g. After the pipe support 4 is installed in place, remove the drag seat on one side of the sliding bracket 1, move the sliding bracket 1 from the installed section to the component loading area, and fix the drag seat on the sliding bracket 1 again. The reverse installation of pipeline 5 in the next section.

h. After all the pipes 5 are installed, remove the sliding bracket 1 and pour the foundation of the pipes 5 with concrete.

Wherein, the strip foundation 3 is a cast-in-situ concrete foundation, and the distance between two strip foundations 3 is determined according to the design.

There are at least two sliding brackets 1 , and more than two sliding brackets 1 may be provided, and the pipeline 5 is stably supported and transported by the sliding brackets 1 .

The sliding brackets 1 can be fixedly connected by connecting rods to form a stable square frame, and the two ends of the connecting rods are fixed on the adjustment holes 1-6 of the main beam 1-1 by bolts, which is convenient for disassembly and assembly.

The guide rail 2 is an angle steel, and the angle steel is buckled on the top of the strip foundation 3 and fixed by welding with the embedded parts. The wheel surface of the guide wheel 1-3 is provided with a V-shaped groove, so that the guide wheel 1-3 can cooperate with the guide rail 2 made of angle steel.

In step h, when pouring the foundation of the concrete pipeline 5, the original strip foundation 3 and the pipeline support 4 are poured into the foundation of the pipeline 5 together without being dismantled separately, so that the construction efficiency can be improved.

On the top surface of the main beam 1-1 of the sliding bracket 1, a number of adjusting holes 1-6 are evenly distributed in an array, and the sliding sleeve 1-2 and the bracket 1-4 are fixed on the corresponding adjusting holes 1-6 by bolts. When in use, the distance between the two brackets 1-4 is adjusted according to the diameter of the pipeline 5, and the distance between the two sliding sleeves 1-2 is adjusted according to the distance between the strip foundations 3.

The top of the pipe support 4 is arc-shaped, and the radius of curvature of the arc is consistent with the radius of the outer wall of the pipe 5. The height of the pipe support 4 is determined according to requirements to ensure that the elevation of the pipe 5 after being placed on the pipe support 4 meets the requirements. At the beginning, the pipe support 4 is placed flat on the predetermined position earlier, so that the sliding bracket 1 can pass above the pipe support 4 without interfering with the sliding carriage 1 to reverse the pipe 5, and when the pipe 5 reaches the predetermined position and After being jacked up, the pipe support 4 is erected and fixed, and then the pipe 5 is lowered onto the pipe support 4 .

After the pipeline 5 is fixed in place, the sliding bracket 1 can be taken out from under the pipeline 5 only by removing the bracket 1-5 on one side of the sliding bracket 1, so that the sliding bracket can be quickly reinstalled in the component loading area 1 to carry out the pipeline 5 transshipment work next time.

In the construction method of the large-diameter drainage pipeline in a confined space of the present invention, the pipes 5 are reversed by the sliding bracket 1, and all the pipes 5 are placed on the sliding bracket 1 in the component loading area, and are transported to the installation by the sliding bracket 1. position, just transport the prefabricated pipeline 5 to the outside of the component loading area, and the hoisting equipment only needs to carry out hoisting work near the component loading area, after lifting the pipeline 5, install the pipeline support 4, the pipeline support 4 It is prefabricated and can accurately control the elevation of the pipeline 5 .

In the present invention, since the hoisting area is fixed, it is only necessary to have enough space in the hoisting area to accommodate hoisting equipment and transportation equipment. After the pipeline 5 is hoisted into the groove 6 of the pipeline 5, the sliding The bracket 1 reverses the pipeline 5 to the predetermined installation position, and converts the transfer operation on the ground to the transfer operation under the ground.

The sliding bracket 1 of the present invention can be disassembled and assembled conveniently, can be used repeatedly, can be adjusted, has a wide application range, and reduces construction costs.

Claims (7)

1. The utility model provides a restricted space major diameter drainage pipeline construction equipment, a serial communication port, including guide rail and sliding bracket, sliding bracket includes the girder the both ends of girder are provided with the sliding sleeve respectively both sides are provided with the guide pulley respectively around the sliding sleeve, the guide pulley is used for walk on the guide rail the middle part of side is equipped with two brackets on the girder, the top of bracket is the arc layer board of slope, two the arc layer board is the type of eight characters of falling and arranges.

2. The construction device for the large-diameter drainage pipeline in the limited space according to claim 1, wherein a plurality of adjusting holes are uniformly distributed on the top surface of the main beam in an array manner, and the sliding sleeve and the bracket are fixed on the corresponding adjusting holes through bolts.

3. A construction method of a large-diameter drainage pipeline in a limited space is characterized by comprising the following steps:

a. excavating a drainage pipeline groove according to construction drawings and standard drawing set requirements, manufacturing two strip foundations on the bottom surface of the drainage pipeline groove along the pipeline moving direction, and arranging embedded parts on the upper plane of the strip foundations;

b. after the strip foundation is prefabricated and the strength meets the construction requirement, fixedly mounting a guide rail on the top of the strip foundation through an embedded part;

c. placing at least two groups of sliding brackets on a guide rail, wherein each sliding bracket comprises a main beam, sliding sleeves are respectively arranged at two ends of the main beam, guide wheels are respectively arranged at the front side and the rear side of each sliding sleeve, the guide wheels are used for walking on the guide rail, two brackets are arranged in the middle of the upper side surface of the main beam, inclined arc-shaped supporting plates are arranged at the tops of the brackets, and the two arc-shaped supporting plates are arranged in an inverted splayed shape;

d. placing the prefabricated pipeline support according to the coordinates of the pipeline interface point, and firstly, flatly placing the pipeline support on the bottom surface of the drainage pipeline groove;

e. moving the sliding bracket to a component feeding area, placing the pipeline on the sliding bracket, and dragging the pipeline through a traction device to move the pipeline to a mounting point;

f. jacking the pipeline by using a jack, and supporting a pipeline support below the front end and the rear end of the pipeline;

g. after the pipeline support is installed in place, detaching the dragging seat on one side of the sliding bracket, moving the sliding bracket to a component feeding area from the installed section, and performing reverse transportation installation on the next section of pipeline after re-fixing the dragging seat on the sliding bracket;

h. and after all the pipelines are installed, removing the sliding brackets and pouring the concrete pipeline foundation.

4. The method for constructing a large-diameter drain line for a restricted space according to claim 3, wherein the sliding brackets are fixedly connected to each other by a connecting rod to form a square frame.

5. The construction method of the limited space large-diameter drainage pipeline according to claim 3, wherein the guide rails are angle steels, and the angle steels are buckled on the tops of the strip foundations and are welded and fixed with the embedded parts.

6. The method as claimed in claim 3, wherein the step h is carried out by pouring the concrete pipe foundations together with the original strip foundations and pipe supports.

7. The construction method of the large-diameter drainage pipeline in the limited space according to claim 3, wherein a plurality of adjusting holes are uniformly distributed on the top surface of the main beam of the sliding bracket in an array manner, and the sliding sleeve and the bracket are fixed on the corresponding adjusting holes through bolts; adjust two according to the pipeline diameter the interval of bracket, according to the interval on bar basis adjusts two the interval of sliding sleeve.

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