Integrated pipe laying method for water network or marshland zone based on pipe ditch excavation of ditching chain

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 zone based on pipe ditch excavation of a ditching chain. The method comprises the following steps that one end of a pipeline is fixed to the tail of the integrated sprocket type pipe ditch excavation equipment, a pipe body of the pipeline is loaded on a pipe pushing machine, and when the integrated sprocket type 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 sprocket type 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 excavating a pipeline trench with a trenching chain. 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 excavating a pipe trench with a trenching chain.

[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 power is provided for a trench excavation device with a trenching chain. The trench excavation device is located at the rear of the screw propulsion vehicle, and a chain tooth type trenching chain 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 water networks or swampy areas based on trenching with a trenching chain, comprising the following steps: fixing one end of the pipe to the tail of an integrated chain-tooth type trenching equipment, loading the pipe body of the pipe on a pipe-pushing machine, while the integrated chain-tooth type trenching equipment digs a trench, the pipe-pushing machine 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 chain-tooth 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 chain tooth type trench excavation equipment includes:

[0014] Work vehicle;

[0015] A trenching chain disposed at the rear of the work vehicle;

[0016] A pipeline connection mechanism disposed on a side of the trenching chain away from the working vehicle;

[0017] A first adjusting mechanism, used for adjusting the height of the bottom of the trenching chain by horizontally rotating the trenching chain;

[0018] And a second adjusting mechanism is used to adjust the height of the pipeline connecting mechanism.

[0019] In the above technical solution:

[0020] 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;

[0021] The trenching chain can be designed and adjusted according to the trench width, and connected to the work vehicle, and operated by hydraulic or fuel drive to perform trenching operations;

[0022] The first adjustment mechanism can be used to adjust the angle of the trenching chain by driving the trenching chain to rotate around a horizontal rotation axis to adjust the height of the bottom of the trenching chain, thereby adjusting the trenching depth to meet the trenching needs of different pipe diameters;

[0023] The pipeline connecting mechanism is used to connect the laid pipelines;

[0024] The second adjustment mechanism can be used to adjust the height of the pipeline connecting mechanism.

[0025] 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.

[0026] Specifically, the trenching chain comprises:

[0027] A sprocket and chain plate mechanism is arranged vertically, wherein the axis of the sprocket of the sprocket and chain plate mechanism is perpendicular to the axis of the working vehicle, and a plurality of scraping teeth are arranged on the chain plate of the sprocket and chain plate mechanism;

[0028] A protective cover disposed above the sprocket and chain plate mechanism;

[0029] And a frame connected to the first adjusting mechanism, wherein the frame is fixedly connected to the protective cover and the sprocket and chain plate mechanism.

[0030] Based on the above technical solution, during the movement of the work vehicle, the trenching chain is operated in a hydraulically driven manner, and the chain plate drives the scraper teeth to dig during the operation, raising mud and rocks and then draining them away, thereby forming a trench.

[0031] Specifically, the protective cover includes:

[0032] Cover body;

[0033] A slag collecting plate fixedly arranged on an upper part of one side of the inner wall of the cover;

[0034] A slag opening is arranged at an upper part of one side of the inner wall of the cover, and the slag opening is located above the slag collecting plate;

[0035] And a slag scraper fixedly arranged on the top of one side of the inner wall of the cover body, one end of the slag scraper extends to the upper gap between the chain plate of the sprocket chain plate mechanism and the cover body, and the other end of the slag scraper extends above the slag collecting plate.

[0036] Based on the above technical solution, the slag scraper can guide the mud and rocks to the slag collecting plate so as to be discharged from the slag opening.

[0037] Specifically, the slag collecting plate is J-shaped, and the upper end surface of its bottom is close to the lower edge of the slag opening, or the upper end surface of its bottom is flush with the lower edge of the slag opening. The bottom of the slag collecting plate is inclined to form a slope inclined downward toward the lower edge of the slag opening, and the slag opening extends to one side of the work vehicle.

[0038] Based on the above technical solution, it is convenient to discharge mud and rocks from the slag outlet.

[0039] Specifically, the protective cover is located on the upper part of the frame. The first adjustment mechanism includes:

[0040] A first telescopic hydraulic cylinder located at the upper part, whose horizontal projection coincides with the axis of the working vehicle, one end of the first telescopic hydraulic cylinder is hinged to the working vehicle, and the other end of the first telescopic hydraulic cylinder is hinged to the protective cover;

[0041] And a pair of first rotating shafts are located below the first telescopic hydraulic cylinder, each of the first rotating shafts is installed on the working vehicle and is hinged to the protective cover.

[0042] Based on the above technical solution, the trenching chain can be rotated based on the extension and retraction of the first telescopic hydraulic cylinder to adjust the working height.

[0043] Specifically, the pipeline connection mechanism is a hydraulic pipe clamping mechanism arranged transversely, and the axis of the hydraulic pipe clamping mechanism and the axis of the working vehicle are collinear in horizontal projection.

[0044] Specifically, the second regulating mechanism includes:

[0045] A connecting frame, one end of which is fixedly connected to the working vehicle;

[0046] The second telescopic hydraulic cylinder is tilted and has a fixed end fixedly connected to the other end of the connecting frame and a telescopic end fixedly connected to the pipeline connecting mechanism. The horizontal projection of the second telescopic hydraulic cylinder and the axis of the working vehicle are collinear.

[0047] The beneficial effects of the present invention are as follows:

[0048] The integrated pipe laying method for water network or swamp area based on trenching chain excavation of pipe trench provided by the present invention combines the functions of self-propelling in soft strata, carrying materials, automatic trench excavation, and pipeline trenching and sending;

[0049] 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;

[0050] 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

[0051] Figure 1 It is a structural schematic diagram of an integrated chain-tooth type trench excavation equipment and a pipe pusher.

[0052] Figure 2 It is a schematic diagram of the structure of the protective cover.

[0053] Figure 3 This is an enlarged view of the pipe pusher.

[0054] Attached Figure 1 , 2 , 3, the structure list represented by each number is as follows:

[0055] 1. Screw propulsion chassis; 2. Trenching chain; 3. Pipe connection mechanism; 4. Protective cover; 41. Muck scraper; 42. Muck collecting plate; 5. Muck mouth; 6. Second telescopic hydraulic cylinder; 7. First telescopic hydraulic cylinder; 8. Work vehicle; 9. Pipe pusher; 91. Base; 92. Hydraulic telescopic cylinder; 93. Hydraulic pipe clamp; 10. Pipeline. DETAILED DESCRIPTION

[0056] 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.

[0057] Example 1

[0058] like Figure 1 As shown, the integrated chain tooth type trench excavation equipment includes: a working vehicle 8; a trenching chain 2 arranged at the rear of the working vehicle 8; a pipe connecting mechanism 3 arranged on the side of the trenching chain 2 away from the working vehicle 8; a first adjusting mechanism; and a second adjusting mechanism. The first adjusting mechanism is used to adjust the height of the bottom of the trenching chain 2 by horizontally rotating the trenching chain 2. The second adjusting mechanism is used to adjust the height of the pipe connecting mechanism 3.

[0059] Based on the integrated chain-tooth type trench excavation equipment, the trench can be excavated while the working vehicle is moving.

[0060] Example 2

[0061] On the basis of Example 1, Figure 1 As shown, the working vehicle 8 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 chain tooth type trench excavation equipment, it can move forward, backward, turn left, and turn right in the water network or swamp area to perform mobile operations.

[0062] Example 3

[0063] On the basis of Example 1, Figure 1 , 2As shown, the trenching chain 2 includes: a vertically arranged sprocket chain plate mechanism, a protective cover 4 arranged above the sprocket chain plate mechanism, and a frame connected to the first adjustment mechanism. The axis of the sprocket of the sprocket chain plate mechanism is perpendicular to the axis of the working vehicle 8, and a plurality of scraping teeth are arranged on the chain plate of the sprocket chain plate mechanism. The frame is fixedly connected to the protective cover 4 and the sprocket chain plate mechanism.

[0064] The protective cover 4 includes: a cover body; a slag collecting plate 42 fixedly arranged at the upper part of one side of the inner wall of the cover body; a slag opening 5 arranged at the upper part of one side of the inner wall of the cover body; and a slag scraper 41 fixedly arranged at the top of one side of the inner wall of the cover body. The slag opening 5 is located above the slag collecting plate 42. One end of the slag scraper 41 extends to the gap between the chain plate of the sprocket chain plate mechanism and the upper part of the cover body, and the other end of the slag scraper 41 extends to the upper part of the slag collecting plate 42. The protective cover 4 is arranged on the upper part of the frame.

[0065] The slag collecting plate 42 is J-shaped, and the upper end surface of the bottom thereof is close to the lower edge of the slag opening 5. In other embodiments, the upper end surface of the bottom thereof is flush with the lower edge of the slag opening 5. The bottom of the slag collecting plate 42 is inclined to form a slope that is inclined downward toward the lower edge of the slag opening 5, and the slag opening 5 extends to one side of the working vehicle 8.

[0066] Based on the integrated chain tooth type trench excavation equipment, the trenching chain acts as a trenching actuator to perform trenching operations during operation. Based on the protective cover structure, mud and rocks can be discharged in conjunction with the operation of the trenching chain.

[0067] Example 4

[0068] On the basis of Example 3, Figure 1 As shown, the first adjusting mechanism includes: a first telescopic hydraulic cylinder 7 located at the upper part; and a pair of first rotating shafts located below the first telescopic hydraulic cylinder 7.

[0069] The horizontal projection of the first telescopic hydraulic cylinder 7 coincides with the axis of the working vehicle 8, one end of the first telescopic hydraulic cylinder 7 is articulated to the working vehicle 8, and the other end of the first telescopic hydraulic cylinder 7 is articulated to the protective cover 4. Each first rotating shaft is installed on the working vehicle 8 and is articulated to the protective cover 4. Based on this technical solution, the trenching chain can be driven to rotate by the extension and retraction of the first telescopic hydraulic cylinder to adjust the height of the bottom of the trenching chain.

[0070] Example 5

[0071] On the basis of Example 1, Figure 1 As shown, the pipeline connection mechanism 3 is a hydraulic clamping mechanism arranged transversely, and the axis of the hydraulic clamping mechanism is collinear with the axis of the working vehicle 8 in horizontal projection. The pipeline connection mechanism 3 is a hydraulic clamping mechanism, and the existing technology can be used.

[0072] Example 6

[0073] On the basis of Example 5, Figure 1 As shown, the second adjustment mechanism includes: a connecting frame and a second telescopic hydraulic cylinder 6 arranged obliquely. The fixed end of the second telescopic hydraulic cylinder 6 is fixed to one end of the connecting frame. The other end of the connecting frame is fixedly connected to the working vehicle 8. The telescopic end of the second telescopic hydraulic cylinder 6 is fixedly connected to the pipeline connecting mechanism 3. The horizontal projection of the axis of the second telescopic hydraulic cylinder 6 and the working vehicle 8 is collinear. Based on this technical solution, the height of the pipeline connecting mechanism can be adjusted by telescoping the second telescopic hydraulic cylinder.

[0074] Example 7

[0075] On the basis of the above embodiments, the working vehicle 8 has a hydraulic power assembly, which is connected to the screw propeller of the screw propulsion chassis 1, the hydraulic motor of the trenching chain 2, the first telescopic hydraulic cylinder 7 and the second telescopic hydraulic cylinder 6. Based on the integrated chain tooth type trenching equipment, a set of hydraulic power assemblies can provide power to each actuator to perform operations requiring high torque.

[0076] Example 8

[0077] like Figure 1 , 3 As shown, on the basis of the above embodiments, the pipe pusher 9 includes: a fixed base 91; a pair of horizontally arranged hydraulic telescopic cylinders 92, one end of each hydraulic telescopic cylinder 92 is mounted on the base 91; and a hydraulic pipe gripper 93 fixed to the other end of each hydraulic telescopic cylinder 92. The pipe pusher 9 can adopt the existing technology. Based on this technical solution, the pipe 10 is repeatedly pushed with the cooperation of the repeated extension and contraction of the hydraulic telescopic cylinder 92 and the repeated clamping and releasing of the hydraulic pipe gripper 93.

[0078] Example 9

[0079] The integrated pipe laying method for a water network or swampy area based on a trenching chain to dig a trench may be based on Example 8 and include the following steps:

[0080] 1) Fix one end of the pipeline 10 to the pipeline connection mechanism 3 of the integrated chain tooth type trench excavation equipment, load the pipe body of the pipeline 10 on the pipe pusher 9, and adjust the height of the bottom of the trenching chain 2 and the pipeline connection mechanism 3 through various adjustment mechanisms;

[0081] 2) While the working vehicle 8 is moving, the trenching chain 2 is turned on, and the hydraulic telescopic cylinder 92 of the pipe pusher 9 is started to push the pipe forward while trenching. The pushing speed of the pipe pusher 9 matches the moving speed of the spiral propulsion chassis 1;

[0082] 3) The hydraulic telescopic cylinder 92 resets after reaching the stroke, and the working vehicle 8 preferably stops and waits during the reset process;

[0083] 4) Dig a trench to the required length and place the pipeline 10 into the trench.

[0084] 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 trenching by trenching chains, characterized in that: The following steps are involved: One end of the pipeline (10) is fixed to the rear end of the integrated chain-tooth type trench excavation equipment, and the pipe body of the pipeline (10) is loaded on the pipe pusher (9). While the integrated chain-tooth type trench excavation equipment is trenching, the pipe pusher (9) pushes the pipe forward synchronously, and after reaching a predetermined distance, the pipeline (10) is unloaded into the trench.

2. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to claim 1 is characterized in that: The integrated chain tooth type trench excavation equipment comprises: Work vehicle (8); A trenching chain (2) arranged at the rear of the working vehicle (8); A pipeline connection mechanism (3) arranged on a side of the trenching chain (2) away from the working vehicle (8); A first adjusting mechanism, used for adjusting the height of the bottom of the trenching chain (2) by horizontally rotating the trenching chain (2); And a second adjusting mechanism, used for adjusting the height of the pipeline connecting mechanism (3).

3. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to claim 2, characterized in that: The working vehicle (8) 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 swampy areas based on trenching by trenching chains according to claim 2, characterized in that: The trenching chain (2) comprises: A sprocket and chain plate mechanism is arranged vertically, wherein the axis of the sprocket of the sprocket and chain plate mechanism is perpendicular to the axis of the working vehicle (8), and a plurality of scraping teeth are arranged on the chain plate of the sprocket and chain plate mechanism; A protective cover (4) arranged above the sprocket and chain plate mechanism; And a frame connected to the first adjustment mechanism, the frame is fixedly connected to the protective cover (4) and the sprocket and chain plate mechanism.

5. The integrated pipe laying method for water network or swamp area based on trenching by trenching chain according to claim 4 is characterized in that: The protective cover (4) comprises: Cover body; A slag collecting plate (42) fixedly arranged on an upper portion of one side of the inner wall of the cover; A slag opening (5) is arranged at an upper portion of one side of the inner wall of the cover, and the slag opening (5) is located above the slag collecting plate (42); and a slag scraper (41) fixedly arranged on the top of one side of the inner wall of the cover body, one end of the slag scraper (41) extending to the gap between the chain plate of the sprocket chain plate mechanism and the upper part of the cover body, and the other end of the slag scraper (41) extending to the top of the slag collecting plate (42).

6. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to claim 5, characterized in that: The slag collecting plate (42) is J-shaped, and the upper end surface of its bottom is close to the lower edge of the slag opening (5), or the upper end surface of its bottom is flush with the lower edge of the slag opening (5). The bottom of the slag collecting plate (42) is inclined to form a slope that slopes downward toward the lower edge of the slag opening (5), and the slag opening (5) extends to one side of the working vehicle (8).

7. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to claim 4, characterized in that: The protective cover (4) is located on the upper part of the frame; The first adjustment mechanism comprises: A first telescopic hydraulic cylinder (7) located at the upper part, whose horizontal projection coincides with the axis of the working vehicle (8), one end of the first telescopic hydraulic cylinder (7) is hinged to the working vehicle (8), and the other end of the first telescopic hydraulic cylinder (7) is hinged to the protective cover (4); and a pair of first rotating shafts located below the first telescopic hydraulic cylinder (7), each of the first rotating shafts being mounted on the working vehicle (8) and hinged to the protective cover (4).

8. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to claim 2, characterized in that: The pipeline connection mechanism (3) is a hydraulic pipe clamping mechanism arranged transversely, and the axis of the hydraulic pipe clamping mechanism and the axis of the working vehicle (8) are collinear in horizontal projection.

9. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to claim 8, characterized in that: The second adjustment mechanism comprises: A connecting frame, one end of which is fixedly connected to the working vehicle (8); A second telescopic hydraulic cylinder (6) is arranged obliquely, its fixed end is fixedly connected to the other end of the connecting frame, its telescopic end is fixedly connected to the pipeline connecting mechanism (3), and its axis and the axis of the working vehicle (8) are collinear in horizontal projection.

10. The integrated pipe laying method for water networks or swampy areas based on trenching by trenching chains according to any one of claims 1 to 9, characterized in that: The pipe pusher (9) comprises: a fixed base (91); a pair of horizontally arranged hydraulic telescopic cylinders (92), one end of each hydraulic telescopic cylinder (92) being mounted on the base (91); and a hydraulic pipe clamp (93) fixed to the other end of each hydraulic telescopic cylinder (92).

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