Integrated pipe laying method for water network or marshland zone based on bucket-wheel excavation pipe ditch

Abstract

The invention belongs to the technical scheme of pipeline construction, and particularly relates to an integrated pipe laying method for a water network or a marshland belt based on bucket-wheel excavation of a pipe ditch. The method comprises the following steps that one end of a pipeline is fixed to the tail of the integrated bucket-wheel pipe ditch excavation equipment, a pipe body of the pipeline is loaded on a pipe pushing machine, and when the integrated bucket-wheel pipe ditch excavation equipment is used for ditching, the pipe pushing machine synchronously pushes a pipe forwards, and the pipeline is unloaded into a pipe ditch after a preset distance is reached. Through the cooperation of the integrated bucket-wheel pipe ditch excavation equipment and the pipe pushing machine, pipe ditch excavation and pipeline trenching can be synchronously carried out, and the integrated construction of pipeline trenching and trenching laying is completed.

Description

Technical Field

[0001] The invention belongs to a technical solution for pipeline construction, and specifically relates to an integrated pipe-laying method for a water network or a swampy area based on bucket wheel excavation of a pipe trench. Background Art

[0002] In water network and swamp areas, pipeline projects such as oil and gas and water transmission often use excavators to dig trenches first, and then weld prefabricated pipes on one side of the trench into the trench through special lifting equipment. However, due to the low bearing capacity of the foundation in water network areas, large machinery used for trenching, transportation, pipe laying, welding, lifting, and trenching is difficult to enter the site, and equipment often gets stuck and is difficult to rescue, and trench formation is difficult.

[0003] There are two main pipeline construction methods available today: one is to use an amphibious excavator with a specially made widened track to transport pipes and dig trenches, but in areas with low bearing capacity of the foundation, there is still a risk of equipment sinking for heavy equipment such as pipelayers, and it is greatly affected by the weather and has low efficiency; the other is to use auxiliary measures such as foundation replacement, precipitation, diversion, drying, and laying of steel plates for strata such as water networks and swamps. This method is also greatly affected by weather factors, and has a large amount of work, high cost, and a long construction period.

[0004] In addition, the simultaneous excavation of the trench and laying of the pipeline can help improve construction efficiency. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present invention provides an integrated pipe-laying method for a water network or a swampy area based on bucket wheel excavation of a pipe trench.

[0006] In the present invention, a screw propulsion vehicle with a screw propulsion chassis is used for the excavation equipment to realize the driving and material transportation functions of heavy equipment in soft strata, and to provide power for a trench excavation device with a bucket wheel. The trench excavation device is located at the rear of the screw propulsion vehicle, and the bucket wheel device is used to cut the debris and transport it to the ground to achieve a trench of designed depth and width.

[0007] In the present invention, a prefabricated pipeline is connected behind the spiral propulsion vehicle and the trench excavation device, and the entire pipeline is pushed forward with the cooperation of the excavation equipment and the pipe pusher. Even if the stratum is particularly loose and the pipe trench is difficult to form, the trench excavation and the pipeline trenching can still be carried out simultaneously, completing the integrated construction of pipeline trenching and trenching. Combined with the construction experience of directional drilling backhaul and direct pipe laying, this new pipeline construction method can meet the excavation and laying length of 2000m in a single time.

[0008] The technical solution provided by the present invention is as follows:

[0009] An integrated pipe laying method for a water network or swamp area based on bucket wheel trenching comprises the following steps: fixing one end of a pipe to the tail of an integrated bucket wheel trenching equipment, loading the pipe body of the pipe on a pipe pusher, while the integrated bucket wheel trenching equipment digs a trench, the pipe pusher synchronously pushes the pipe forward, and unloads the pipe into the trench after reaching a predetermined distance.

[0010] Based on the above technical solution, through the cooperation of integrated bucket wheel trench excavation equipment and pipe pusher, trench excavation and pipeline laying can be carried out simultaneously, completing the integrated construction of pipeline trenching and trench laying.

[0011] Specifically, the pipe pusher includes: a fixed base; a pair of horizontally arranged hydraulic telescopic cylinders, one end of each hydraulic telescopic cylinder is installed on the base; and a hydraulic pipe clamp fixed to the other end of each hydraulic telescopic cylinder.

[0012] Based on the above technical solution, the pipe pusher can adopt the existing pipe pusher structure, and repeatedly push the pipe under the cooperation of repeated extension and retraction of the hydraulic telescopic cylinder and repeated clamping and releasing of the hydraulic pipe clamp.

[0013] Specifically, the integrated bucket wheel trench excavation equipment includes: a work vehicle; a bucket wheel arranged at the rear of the work vehicle; a pipe clamping mechanism arranged on the side of the bucket wheel away from the work vehicle; and an adjustment mechanism for synchronously adjusting the height of the bucket wheel and the pipe clamping mechanism.

[0014] In the above technical solution:

[0015] The spiral propulsion chassis is a hollow spiral structure. As the walking chassis of the work vehicle, it has a large carrying capacity and can carry the work vehicle to realize forward, backward, left turn, right turn and other actions;

[0016] The bucket wheel is driven by hydraulic or fuel to rotate and perform trenching operations;

[0017] The pipe clamping mechanism is used to connect the laid pipes;

[0018] The adjusting mechanism can be used to adjust the bucket wheel up and down to meet the needs of trenching at different depths and speeds.

[0019] Specifically, the working vehicle has a screw propulsion chassis and a hydraulic power assembly. The screw propulsion chassis has two hollow screw propellers, and the hydraulic power assembly drives the two screw propellers to rotate respectively.

[0020] Specifically, the bucket wheel includes:

[0021] Fixed hydraulic motor;

[0022] An inner shaft fixedly connected to the output shaft of the hydraulic motor;

[0023] An outer wheel fixedly connected to the inner shaft via a plurality of radial supports;

[0024] And a plurality of buckets are fixedly arranged around the outer wheel.

[0025] Based on the above technical solution, during the movement of the working vehicle, the bucket wheel is rotated by hydraulic or fuel drive, so that the bucket digs during the rotation, removes mud and rocks, and thus forms a trench.

[0026] Further:

[0027] Each of the buckets is driven by the hydraulic motor to rotate to form a circular coverage area;

[0028] The covered area is coaxial with the rotating shaft of the hydraulic motor;

[0029] The projections of the rotating shaft of the hydraulic motor and the axis of the working vehicle on a horizontal plane are horizontal or collinear.

[0030] Furthermore: the bucket wheel also includes a hood covering each of the buckets located at the top, and a slag channel is provided on the top of the hood, one end of the slag channel is a slag discharge port, which extends toward the covered area, and the other end of the slag channel is a slag port, which faces the side of the bucket wheel.

[0031] Based on the above technical solution, the bucket wheel is a rotationally symmetrical mechanism, the bucket is a trenching actuator responsible for digging the slag, the radial support ensures the trenching size, and the inner shaft drives the bucket to rotate within a certain speed range to ensure that the excavated slag can be discharged smoothly from the slag port. The slag is discharged to one side of the work vehicle without affecting the forward and backward movement of the work vehicle.

[0032] Specifically, the tube clamping mechanism is a hydraulic tube clamping mechanism.

[0033] Specifically, the adjustment mechanism includes a retractable hydraulic cylinder obliquely arranged at the rear of the work vehicle, the retractable portion of the retractable hydraulic cylinder is fixedly provided with a seat body, the seat body is fixedly connected to the bucket wheel, and the bucket wheel is fixedly connected to the pipe clamping mechanism.

[0034] Based on the above technical solution, the bucket wheel can be driven to rise and fall based on the extension and retraction of the hydraulic cylinder, thereby adjusting the working height.

[0035] Furthermore, the projections of the axis of the telescopic hydraulic cylinder and the axis of the working vehicle on the horizontal plane are collinear.

[0036] The beneficial effects of the present invention are as follows:

[0037] The integrated pipe laying method for water network or swamp area based on bucket wheel trenching provided by the present invention combines the functions of self-propelling in soft strata, carrying materials, automatic trenching, and pipeline trenching and sending;

[0038] The spiral propulsion vehicle chassis has strong carrying capacity, convenient material transportation, high trench excavation efficiency, and easy operation of the pipeline traction mechanism; the trench excavation device can meet the excavation and slag discharge functions of different geological conditions such as silt and sand; the pipe pusher is fixed in the stratum through the ground anchor, which can push the pipeline to achieve long-distance trenching operations;

[0039] The spiral propulsion vehicle, trench excavation device and pipe pusher are independent and combined with each other. The effective combination of the three devices solves the problems of traditional construction methods in water networks and swamps, large-scale requisition of working belts, and difficulty in construction with large machinery. It has high construction efficiency, small construction area, low comprehensive cost and little environmental damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of an integrated bucket wheel trench excavation equipment and a pipe pusher.

[0041] Figure 2 It is a schematic diagram of the structure of the bucket wheel.

[0042] Figure 3 This is an enlarged view of the pipe pusher.

[0043] Attached Figure 1 , 2 , 3, the structure list represented by each number is as follows:

[0044] 1. Screw propulsion chassis; 2. Bucket wheel; 21. Bucket; 22. Radial support; 23. Inner shaft; 24. Hydraulic motor; 3. Pipe clamping mechanism; 4. Muck mouth; 5. Adjustment mechanism; 6. Work vehicle; 7. Pipe pusher; 71. Base; 72. Hydraulic telescopic cylinder; 73. Hydraulic pipe clamp; 8. Pipeline. DETAILED DESCRIPTION

[0045] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0046] Example 1

[0047] like Figure 1 As shown, the integrated bucket wheel pipe trench excavation equipment used includes: a working vehicle 6; a bucket wheel 2 arranged at the rear of the working vehicle 6; a pipe clamping mechanism 3 arranged on the side of the bucket wheel 2 away from the working vehicle 6; and an adjustment mechanism 5 for synchronously adjusting the height of the bucket wheel 2 and the pipe clamping mechanism 3. Based on the integrated bucket wheel pipe trench excavation equipment, the pipe trench can be excavated while the working vehicle is moving.

[0048] Example 2

[0049] On the basis of Example 1, Figure 1 As shown, the working vehicle 6 has a screw propulsion chassis 1 and a hydraulic power assembly. The screw propulsion chassis 1 has two hollow screw propellers, and the hydraulic power assembly drives the two screw propellers to rotate respectively. Based on the integrated bucket wheel trench excavation equipment, it can move forward, backward, turn left, and turn right on the water network or swamp area to perform mobile operations.

[0050] Example 3

[0051] On the basis of Example 1, Figure 2 As shown, the bucket wheel 2 includes: a fixedly arranged hydraulic motor 24; an inner shaft 23 fixedly connected to the output shaft of the hydraulic motor 24; an outer wheel fixedly connected to the inner shaft 23 through a plurality of radial supports 22; a plurality of buckets 21 evenly and fixedly arranged around the outer wheel; and a hood covering the buckets 21 located at the upper part. A slag channel is arranged at the upper part of the hood, one end of the slag channel is a slag discharge port, which is superposed to the covered area, and the other end of the slag channel is a slag port 4, which is facing the side of the bucket wheel 2.

[0052] Each bucket 21 rotates to form a circular coverage area under the drive of the hydraulic motor 24. The coverage area is coaxial with the rotation axis of the hydraulic motor 24. The rotation axis of the hydraulic motor 24 is colinear with the projection of the axis of the working vehicle 6 on the horizontal plane.

[0053] Based on the integrated bucket wheel trench excavation equipment, the bucket serves as a trenching actuator and performs trenching operations during the rotation process.

[0054] Example 4

[0055] On the basis of embodiment 1, the tube clamping mechanism 3 is a hydraulic tube clamping mechanism, and the existing technology can be adopted.

[0056] Example 5

[0057] On the basis of Embodiment 2, the screw propulsion chassis 1 can adopt the existing technology, the screw shaft of the screw propeller is driven by a pulley mechanism, and the screw shaft is rotatably connected to the frame. The pulley mechanism is provided with rotational power by a hydraulic motor, and each hydraulic motor is provided with power by a hydraulic power assembly.

[0058] Example 6

[0059] On the basis of Example 1, Figure 1 As shown, the adjustment mechanism 5 includes a retractable hydraulic cylinder obliquely arranged at the rear of the working vehicle 6, the retractable portion of the retractable hydraulic cylinder is fixedly provided with a seat body, the seat body is fixedly connected to the bucket wheel 2, and the bucket wheel 2 is fixedly connected to the pipe clamping mechanism 3. The projection of the axis of the retractable hydraulic cylinder and the axis of the working vehicle 6 on the horizontal plane are collinear.

[0060] Example 7

[0061] On the basis of the above embodiments, the working vehicle 6 has a hydraulic power assembly, which connects the screw propeller of the screw propulsion chassis 1, the hydraulic motor 24 of the bucket wheel 2 and the retractable hydraulic cylinder. Based on the integrated bucket wheel trenching equipment, a set of hydraulic power assemblies can provide power to each actuator to perform operations requiring high torque.

[0062] Example 8

[0063] like Figure 1 , 3 As shown, on the basis of the above embodiments, the pipe pusher 7 comprises: a fixed base 71; a pair of horizontally arranged hydraulic telescopic cylinders 72, one end of each hydraulic telescopic cylinder 72 being mounted on the base 71; and a hydraulic pipe gripper 73 fixed to the other end of each hydraulic telescopic cylinder 72. The pipe pusher can adopt the existing technology. Based on this technical solution, the pipe is repeatedly pushed with the cooperation of the repeated extension and retraction of the hydraulic telescopic cylinder and the repeated clamping and releasing of the hydraulic pipe gripper.

[0064] Example 9

[0065] The integrated pipe laying method for a water network or swampy area based on bucket wheel excavation trenches may be based on Example 8 and include the following steps:

[0066] 1) Fix one end of the pipe 8 to the pipe clamping mechanism 3 of the integrated bucket wheel trench excavation equipment, load the pipe body of the pipe 8 on the pipe pusher 7, and adjust the height of the bucket wheel 2 and the pipe clamping mechanism 3 through the adjustment mechanism;

[0067] 2) While the working vehicle 6 is moving, the bucket wheel 2 is opened, and the hydraulic telescopic cylinder 72 of the pipe pusher 7 is started to push the pipe forward while digging the trench. The pushing speed of the pipe pusher 7 matches the moving speed of the screw propulsion chassis 1;

[0068] 3) The hydraulic telescopic cylinder 72 resets after reaching the stroke, and the working vehicle 6 preferably stops and waits during the reset process;

[0069] 4) Dig a trench to the required length and place the pipeline 8 in the trench.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated pipe laying method for water networks or swampy areas based on bucket wheel excavation trenches, characterized in that: The following steps are involved: One end of the pipeline (8) is fixed to the rear end of the integrated bucket wheel trench excavation equipment, and the pipe body of the pipeline (8) is loaded on the pipe pusher (7). While the integrated bucket wheel trench excavation equipment is trenching, the pipe pusher (7) pushes the pipe forward synchronously, and after reaching a predetermined distance, the pipeline (8) is unloaded into the trench.

2. The integrated pipe laying method for water networks or swamps based on bucket wheel trenching according to claim 1 is characterized in that: The integrated bucket wheel trench excavation equipment comprises: a working vehicle (6); a bucket wheel (2) arranged at the rear of the working vehicle (6); a pipe clamping mechanism (3) arranged on the side of the bucket wheel (2) away from the working vehicle (6); and an adjustment mechanism (5) for synchronously adjusting the height of the bucket wheel (2) and the pipe clamping mechanism (3).

3. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to claim 2 is characterized by: The working vehicle (6) comprises a screw propulsion chassis (1) and a hydraulic power assembly. The screw propulsion chassis (1) comprises two hollow screw propellers. The hydraulic power assembly drives the two screw propellers to rotate respectively.

4. The integrated pipe laying method for water networks or swamps based on bucket wheel trenching according to claim 2 is characterized in that: The bucket wheel (2) comprises: A fixedly arranged hydraulic motor (24); An inner shaft (23) fixedly connected to an output shaft of the hydraulic motor (24); An outer wheel fixedly connected to the inner shaft (23) via a plurality of radial supports (22); And a plurality of buckets (21) are fixedly arranged around the outer wheel.

5. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to claim 4 is characterized by: Each of the buckets (21) is driven by the hydraulic motor (24) to rotate to form a circular covering area; The covered area is coaxial with the rotating shaft of the hydraulic motor (24); The projections of the rotating shaft of the hydraulic motor (24) and the axis of the working vehicle (6) on a horizontal plane are horizontal or collinear.

6. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to claim 5, characterized in that: The bucket wheel (2) further comprises a hood covering each of the buckets (21) located at the top, a slag channel being arranged at the top of the hood, one end of the slag channel being a slag discharge port which extends toward the covered area, and the other end of the slag channel being a slag port (4) which faces the side of the bucket wheel (2).

7. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to claim 2, characterized in that: The tube clamping mechanism (3) is a hydraulic tube clamping mechanism.

8. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to claim 2, characterized in that: The adjustment mechanism (5) comprises a telescopic hydraulic cylinder obliquely arranged at the rear of the work vehicle (6), the telescopic portion of the telescopic hydraulic cylinder being fixedly provided with a seat body, the seat body being fixedly connected to the bucket wheel (2), and the bucket wheel (2) being fixedly connected to the pipe clamping mechanism (3).

9. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to claim 8, characterized in that: The projections of the axis of the telescopic hydraulic cylinder and the axis of the working vehicle (6) on the horizontal plane are collinear.

10. The integrated pipe laying method for water networks or swampy areas based on bucket wheel trenching according to any one of claims 1 to 9, characterized in that: The pipe pusher (7) comprises: a fixed base (71); a pair of horizontally arranged hydraulic telescopic cylinders (72), one end of each hydraulic telescopic cylinder (72) being mounted on the base (71); and a hydraulic pipe clamp (73) fixed to the other end of each hydraulic telescopic cylinder (72).

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