Miniature pipe-jacking ground arrow type construction device

Abstract

The utility model discloses a miniature pipe-jacking ground arrow type construction device which comprises a machine head and a lubricating grouting device, the machine head is connected with a pipeline in a jacking process, the pipeline is connected with a pipeline pushing device, and a measuring device is installed on the pipeline to position and guide the machine head. The pipeline pushing device comprises a main jacking oil cylinder, the main jacking oil cylinder is installed on a guide rail, the main jacking oil cylinder is connected with a pipeline through arc-shaped jacking iron and annular jacking iron to transmit thrust, a guide drill bit and a reamer are installed on the machine head, and the lubricating grouting device conducts continuous grouting in the pipeline jacking process. The miniature pipe-jacking ground arrow type construction device is high in construction speed, low in cost, high in safety and reliability and high in pipeline laying precision.

Description

Technical Field

[0001] The utility model relates to a ground arrow type construction method, in particular to a micro pipe jacking ground arrow type construction device. Background Art

[0002] The basic principle of the micro-pipe jacking method is to use hydraulic or mechanical force to propel the jacking machine forward through the underground soil, while simultaneously pulling the pipeline behind it to achieve pipeline laying. This technology controls the thrust, direction, and speed of the jacking machine, taking into account the mechanical properties of the underground soil, to ensure that the pipeline can smoothly penetrate various complex formations. During the construction process, grouting of the drilled holes is often required to enhance the stability of the formation and minimize the impact of construction on the surrounding environment.

[0003] Due to its unique operating principle and structural design, the micro-pipe jacking method typically achieves a relatively fast jacking speed during the post-jacking process, especially when traversing soft soil layers. Thanks to its rapid jacking speed and efficient construction process, the micro-pipe jacking method can significantly shorten construction periods and improve project efficiency. However, the jacking speed and efficiency of the micro-pipe jacking method still need to be continuously improved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a micro pipe jacking arrow type construction device, which not only has a fast construction speed and reduces costs, but also has high safety and reliability and high pipeline laying accuracy.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a micro-pipe jacking arrow-type construction device, including a machine head and a lubricating grouting device, the machine head is connected to the pipeline being jacked, the pipeline is connected to a pipeline pushing device, and a measuring device is installed on the pipeline to position and guide the machine head; the pipeline pushing device includes a main jacking oil cylinder, the main jacking oil cylinder is installed on a guide rail, the main jacking oil cylinder is connected to the pipeline through an arc-shaped jacking iron, an annular jacking iron and a pipeline to transmit thrust, a guide drill bit and a reamer are installed on the machine head, and the lubricating grouting device performs continuous grouting during the pipeline jacking process.

[0006] Furthermore, the pipeline pushing device is located in a receiving pit, and rear walls are provided at the bottom and around the receiving pit, and a crane for lifting the pipeline is provided above the receiving pit.

[0007] Furthermore, an escalator is provided in the receiving pit, and safety handrails are provided on both sides of the crane.

[0008] Furthermore, the arc-shaped top iron is arranged between the hydraulic jack of the main top oil cylinder and the annular top iron, and the annular top iron is arranged at the tail end of the pipeline.

[0009] Compared with the prior art, the present invention has the following beneficial effects: the micro-pipe jacking arrow-type construction device provided by the present invention can not only greatly increase the jacking speed and improve the efficiency, but also has higher safety and reliability, and high pipeline laying accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a schematic diagram of the structure of the micro-pipe jacking arrow-type construction device of the present invention.

[0011] The markings in the figure are: 1. Escalator; 2. Crane; 3. Safety handrail; 4. Lubrication grouting device; 5. Control room; 6. Power distribution device; 7. Operating device; 8. Rear wall; 9. Measuring device; 10. Main jacking cylinder; 11. Guide rail; 12. Arc jacking iron; 13. Ring jacking iron; 14. Pipeline being jacked; 15. Machine head. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of the practical micro-pipe jacking arrow-type construction device.

[0014] See Figure 1 The micro-pipe jacking arrow-type construction device provided by the utility model includes a machine head 15 and a lubricating grouting device 4. The machine head 15 is connected to the pipe 14 being jacked, and the pipe 14 is connected to the pipe pushing device. A measuring device 9 is installed on the pipe 14 to position and guide the machine head 15; the pipe pushing device includes a main top oil cylinder 10, and the main top oil cylinder 10 is installed on the guide rail 11. The main top oil cylinder 10 is connected to the pipe 14 through an arc top iron 12, an annular top iron 13 and a thrust force. A guide drill bit and a reamer are installed on the machine head 15. The lubricating grouting device 4 performs continuous grouting during the jacking process of the pipe 14.

[0015] The micro-pipe jacking device provided by this utility model has a pipe pushing device located in a receiving pit. The bottom and surrounding perimeter of the receiving pit are provided with a rear support wall 8. A crane 2 for lifting the pipe is located above the receiving pit. A ladder 1 is installed within the receiving pit, and safety railings 3 are installed on both sides of the crane 2. A lubrication grouting device 4 is located outside the receiving pit. An operating room 5 is also located outside the receiving pit. This room is equipped with a power distribution device 6 and an operating device 7. The main functions of each component are as follows.

[0016] Escalator 1: convenient for people to go up and down the well;

[0017] Driving 2: Pipeline hoisting and transportation, equipment transportation and installation;

[0018] Safety railing 3: prevent people from falling and isolate dangerous areas;

[0019] Lubrication grouting device 4: reduce friction resistance, protect pipelines and main body, stabilize soil layer;

[0020] Control room 5: controls pipe jacking construction, detects construction status, ensures construction safety, and performs data storage and analysis;

[0021] Power distribution device 6: provides stable power supply, controls equipment operation, and detects power usage;

[0022] Operating device 7: equipment control, guidance instructions, safety protection, remote control, data recording;

[0023] Rear wall 8: provides reaction force, supports stability, protects the working environment, and shares loads;

[0024] Measuring device 9: precise positioning and guidance, monitoring of construction process;

[0025] Main jacking cylinder 10: provides jacking power, ensures jacking accuracy and improves construction efficiency;

[0026] Guide rail 11: guiding positioning, supporting stability, and adapting to complex geological conditions;

[0027] Arc-shaped top iron 12: It is set between the hydraulic jack and the annular top iron 13 to make up for the problem of insufficient stroke of the hydraulic jack and to transmit force evenly;

[0028] Ring-shaped top iron 13: It is set at the end of the pipe 14 and can evenly transmit the force of the hydraulic jack to the pipe;

[0029] Pipeline 14 being pushed forward: pushing the pipeline forward and positioning;

[0030] Machine head 15: equipped with a pilot drill and reamer, for cutting and reaming, guiding and positioning, stabilization and protection.

[0031] The drill head 15 of this utility model uses a pilot drill bit to precisely drill a pilot hole according to the designed route, while simultaneously monitoring underground obstacles and adjusting the drilling path in a timely manner. This ensures the straightness and depth of the pilot hole, laying the foundation for subsequent pipeline laying. After the pilot hole is completed, a reamer is used to gradually expand the hole diameter, while a lubricating grouting device 4 simultaneously injects mud or cement slurry to lubricate the soil around the pipeline and reinforce the hole wall. Real-time monitoring of grouting pressure and flow ensures grouting effectiveness and reduces the risk of ground subsidence.

[0032] The utility model connects the pipeline according to the design requirements at the construction starting point and checks the sealing and strength of the connection. The pipeline is loaded between the machine head 15 and the annular top iron 13 using a lifting machine, and is ready for jacking.

[0033] Start the pipe jacking machine and gradually push the pipe into the expanded hole at the preset jacking speed and force. Simultaneously monitor various parameters during the jacking process (such as jacking force and pipe deviation) to adjust the jacking strategy in a timely manner. During the jacking process, maintain continuous grouting to ensure the stability of the soil around the pipe.

[0034] After the pipeline is laid, a water-tightness test or pressure test is performed to check the pipeline's tightness and pressure-bearing capacity. Detection instruments are used to detect the pipeline to confirm its location, depth, and presence of defects.

[0035] The micro-pipe jacking arrow-type construction device provided by the utility model is installed and used as follows:

[0036] 1. Install the propulsion machine base and machine according to the central axis of the pipeline, and install the Leica laser theodolite.

[0037] 2. After the laser theodolite is erected according to the pipeline center and elevation, the slope ratio is adjusted according to the designed slope. After the instrument is set up, the pipe jacking construction begins.

[0038] 3. First, push the conduit into the receiving pit according to the slope set by the laser theodolite. Remove the guide head, connect the conduit, and push it in. Install a mirror frame before pushing the conduit in to prevent water and mud leakage during the jacking process.

[0039] 4. After the guide tube is pushed into the receiving pit, install the simple machine head and slowly push it into the hole. After the machine head is completely in the hole, install the hydraulic oil pipe and high-pressure water pipe used by the machine head.

[0040] 5. During the advancement of the jacking head, the guide tube is removed in the receiving pit.

[0041] By adopting the improved solution of the utility model, a special "ground arrow" (i.e. a small reaming drill bit or pipe jacking tool) is driven by micro-pipe jacking mechanical equipment using the principle of high-pressure hydraulics to accurately penetrate the soil layer on a preset trajectory, while pushing the pipeline in, thereby realizing the laying or replacement of underground pipelines.

[0042] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make slight modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A micro-pipe jacking arrow-type construction device, characterized in that: The invention comprises a machine head (15) and a lubricating grouting device (4), wherein the machine head (15) is connected to a pipe (14) being pushed, and the pipe (14) is connected to a pipe pushing device, and a measuring device (9) is installed on the pipe (14) to position and guide the machine head (15); the pipe pushing device comprises a main top oil cylinder (10), which is installed on a guide rail (11), and the main top oil cylinder (10) is connected to the pipe (14) through an arc top iron (12), an annular top iron (13) and a thrust force, and a guide drill bit and a reamer are installed on the machine head (15). The lubricating grouting device (4) performs continuous grouting during the process of pushing the pipe (14).

2. The micro-pipe jacking arrow-type construction device according to claim 1, characterized in that: The pipeline pushing device is located in a receiving pit, and a rear seat wall (8) is provided at the bottom and surrounding areas of the receiving pit. A crane (2) for lifting the pipeline is provided above the receiving pit.

3. The micro-pipe jacking arrow-type construction device according to claim 2, characterized in that: An escalator (1) is provided in the receiving pit, and safety handrails (3) are provided on both sides of the traveling crane (2).

4. The micro-pipe jacking arrow-type construction device according to claim 1, characterized in that: The arc-shaped top iron (12) is arranged between the hydraulic jack of the main top oil cylinder (10) and the annular top iron (13), and the annular top iron (13) is arranged at the tail end of the pipeline (14).

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