A non-excavation dragline pipe construction device

Abstract

The application relates to the technical field of trenchless pipe construction, in particular to a trenchless drag pipe construction device, which comprises a cutting part and a mud discharging part, a mud discharging channel is arranged in the axial direction of the cutting part, the mud discharging part is rotationally connected to the inside of the mud discharging channel, the mud discharging part and the cutting part are coaxially arranged, the mud discharging part is inserted into a pre-punching hole, drilling is carried out through the cutting part, cutting is carried out from outside to inside, the mud produced by the cutting head during drilling is guided and pressed into the pre-punching hole through a first guide groove, and the mud is discharged outward through the mud discharging channel; tools do not need to be replaced during the construction process, the mud or chippings generated during construction can be conveniently discharged outward, and the construction efficiency can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of trenchless pipe construction technology, specifically to a trenchless pipe dragging construction device. Background Technology

[0002] The existing pipeline laying methods can be roughly divided into the following categories: open trench laying, trenchless towing laying, pipe jacking laying, submerged pipe laying, lining laying, and public trench laying, etc.

[0003] Trenchless pipeline laying is widely used due to its advantages such as smaller workload, easier operation, and smaller construction area. It aims to lay pipelines without excavating the ground, avoiding damage to the ground and minimizing the impact on the surrounding environment. This technology can be widely applied to urban underground pipe networks, gas pipelines, water supply pipelines, sewage pipelines, and other fields.

[0004] In existing technologies, trenchless pipe laying involves gradually increasing the tunnel diameter by changing drill bits of different sizes before pulling the pipe into the tunnel. However, this method requires multiple drill bit changes, making the operation cumbersome and labor-intensive. Furthermore, the excavated soil and debris are difficult to remove, requiring separate cleaning of the drilling debris, which impacts construction efficiency. Therefore, a trenchless pipe laying device is needed to facilitate tunnel excavation and improve construction efficiency.

[0005] For example, the integrated drilling and reaming device for large-diameter trenchless pipe laying construction, as disclosed in Chinese Patent Publication No. CN114542798B, is equipped with a drilling and reaming head. A fixed traction shaft is mounted on the drilling and reaming head, and positioning assemblies are fitted on both ends of the fixed traction shaft. One positioning assembly is rotatably connected to one end of six circumferentially evenly distributed scraper shafts. An extension rod is connected to the other end of the six positioning inner assembly. The six extension rods are rotatably connected to the other ends of the six scraper shafts. The six scraper shafts form a cone-shaped structure, and auger blades are mounted on the scraper shafts. During the reaming process, the scraper shafts contact and roll with the inner wall of the hole to be reamed. The auger blades insert into the soil inside the hole, breaking up the soil and accelerating the removal of soil from the inner wall of the hole, thereby improving the reaming efficiency.

[0006] However, in this application, the soil generated from drilling multiple auger blades accumulates inside the pipe-laying channel, which not only makes it inconvenient to drain the soil but also affects the drilling efficiency of the lower auger blades, resulting in certain defects in its use.

[0007] The technical problem to be solved by this invention is to design a trenchless pipe-dragging construction device that eliminates the need to change drill bits, facilitates drilling operations, and facilitates the removal of soil and debris generated during drilling, thereby improving construction efficiency. Summary of the Invention

[0008] To address the above problems, this invention provides a trenchless pipe-dragging construction device.

[0009] The technical solution adopted by the present invention to solve its technical problem is: a trenchless pipe pulling construction device, including a cutting part and a mud discharge part, wherein the cutting part is provided with a mud discharge channel in the axial direction, the mud discharge part is rotatably connected to the inside of the mud discharge channel, and the mud discharge part and the cutting part are coaxially arranged.

[0010] As an optimization, the cutting part includes a guide sleeve and a plurality of cutting heads, the cutting heads being fixed to the front end of the guide sleeve, and the plurality of cutting heads being evenly arranged along the circumference of the guide sleeve. The front end of the cutting head is recessed in the direction away from the mud discharge channel to form an arc-shaped first guide groove. The first guide groove is connected to the inside of the mud discharge channel, and the inner diameter of the end of the first guide groove away from the guide sleeve is larger than the diameter of the mud discharge channel.

[0011] As an optimization, the outer side of the cutting head is an arc surface, and the front end of the cutting head is a cutting edge.

[0012] As an optimization, the diameter of the guide sleeve is larger than the diameter of the cutting head, and the front end of the guide sleeve protrudes outward in the form of an arc surface, with the inner side of the arc surface integrally formed with the cutting head.

[0013] As an optimization, the guide sleeve is cylindrical, and the mud discharge channel is coaxially arranged with the guide sleeve and the cutting head. The inner side of the guide sleeve away from the cutting head is recessed to form a second guide groove, and the inner diameter of the second guide groove away from the cutting head is larger than the diameter of the mud discharge channel.

[0014] As an optimization, the mud discharge section includes a guide rod, the circumferential surface of which is provided with a spiral guide rib, the guide rod and the guide sleeve are coaxially arranged, and the end of the guide rod away from the cutting head is connected to a mud discharge motor; The guide rod has a drive assembly inside, and the guide sleeve has a connecting assembly inside. The drive assembly and the connecting assembly are connected together.

[0015] As an optimization, the guide rod has a connecting cavity inside; The drive assembly includes an eccentric geared motor and a drive gear. The drive gear is eccentrically positioned with respect to the guide rod. The output shaft of the eccentric geared motor is fixedly connected to the axis of the drive gear. The drive gear is rotatably connected inside the connecting cavity.

[0016] As an optimization, one side of the connecting cavity passes through the guide rod and guide rib and communicates with the inside of the sludge discharge channel, and the inner side of the guide sleeve is recessed to form a circumferential guide groove. The connecting assembly includes a connecting gear disposed inside a guide groove, and the connecting gear meshes with the drive gear.

[0017] As an optimization, a number of guide components are provided inside the side of the guide groove opposite to the connecting cavity, and the number of guide components are arranged in pairs opposite to each other on both sides of the connecting gear; The guide assembly includes a connecting seat and a guide wheel. The guide wheel is rotatably connected to the connecting seat, and the circumferential surface of the guide wheel contacts the circular bottom surface of the connecting gear.

[0018] As an optimization, the length of the mud-discharging section is greater than the length of the cutting section, and the front end of the mud-discharging section is located in front of the cutting section.

[0019] The beneficial effects of this solution are as follows: A trenchless pipe-dragging construction device has the following advantages: The mud discharge section is inserted into the pre-drilled hole, and the cutting section is used to drill the hole. The cutting is done from the outside to the inside. The mud produced by the cutting head is guided into the pre-drilled hole through the first guide groove. The mud is discharged outward through the mud discharge channel. There is no need to change tools during the construction process, and it is convenient to discharge the mud or debris generated during construction, which can greatly improve the construction efficiency. The diameter of the guide sleeve is larger than that of the cutting head, and there is a smooth transition between the guide sleeve and the cutting head. During construction, the guide sleeve can squeeze the soil around the duct, making the inside of the duct smooth and clean, which facilitates the laying of the pipeline. A second guide groove is provided at the end of the guide sleeve away from the cutting head. When the cutting part exits the channel, the residual soil inside the channel is scraped outward through the second guide groove, which improves the cleaning efficiency of soil and debris inside the channel, reduces subsequent cleaning work, and improves construction efficiency. The cutting section is driven to rotate by the drive component inside the mud discharge section. The device operates stably and can achieve differential rotation between the cutting section and the mud discharge section, thus achieving efficient drilling. Attached Figure Description

[0020] Appendix Figure 1 This is an isometric view of the present invention.

[0021] Appendix Figure 2 This is a schematic diagram of the back axis of the present invention.

[0022] Appendix Figure 3 This is a schematic diagram of the main view of the present invention.

[0023] Appendix Figure 4 Appendix to this invention Figure 3 A schematic diagram of the AA cross-section structure.

[0024] Appendix Figure 5 Appendix to this invention Figure 4A magnified structural diagram of part A.

[0025] Among them, 1. guide sleeve, 2. cutting head, 3. mud discharge channel, 4. first guide groove, 5. arc surface, 6. second guide groove, 7. guide rod, 8. guide rib, 9. eccentric geared motor, 10. drive gear, 11. guide groove, 12. connecting gear, 13. connecting seat, 14. guide wheel. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] like Figure 1 As shown, a trenchless pipe-dragging construction device includes a cutting section and a mud-discharging section. The cutting section has a mud-discharging channel 3 in the axial direction, and the mud-discharging section is rotatably connected inside the mud-discharging channel 3. The mud-discharging section and the cutting section are coaxially arranged.

[0030] like Figure 1As shown, the cutting part includes a guide sleeve 1 and several cutting heads 2. The cutting heads 2 are fixed to the front end of the guide sleeve 1, and the several cutting heads 2 are evenly arranged along the circumference of the guide sleeve 1. like Figure 1 , 4 As shown, the front end of the cutting head 2 is recessed in the direction away from the mud discharge channel 3 to form an arc-shaped first guide groove 4. The first guide groove 4 is connected to the inside of the mud discharge channel 3, and the inner diameter of the end of the first guide groove 4 away from the guide sleeve 1 is larger than the diameter of the mud discharge channel 3.

[0031] like Figure 1 As shown, the outer side of the cutting head 2 is an arc surface 5, and the front end of the cutting head 2 is a cutting blade.

[0032] like Figure 2 As shown, the diameter of the guide sleeve 1 is larger than the diameter of the cutting head 2. The front end of the guide sleeve 1 protrudes outward to form an arc surface 5, and the inner side of the arc surface 5 is integrally formed with the cutting head 2.

[0033] like Figure 1 , 2 As shown, the guide sleeve 1 is cylindrical, and the mud discharge channel 3 is coaxially arranged with the guide sleeve 1 and the cutting head 2. The inner side of the guide sleeve 1 away from the cutting head 2 is recessed to form a second guide groove 6. The inner diameter of the second guide groove 6 away from the cutting head 2 is larger than the diameter of the mud discharge channel 3.

[0034] like Figure 1 As shown, the mud discharge section includes a guide rod 7, and the circumferential surface of the guide rod 7 is provided with a spiral guide rib 8. The guide rod 7 is coaxially arranged with the guide sleeve 1, and the end of the guide rod 7 away from the cutting head 2 is connected to a mud discharge motor. like Figure 4 As shown, the guide rod 7 has a drive assembly inside, and the guide sleeve 1 has a connecting assembly inside. The drive assembly and the connecting assembly are connected in cooperation.

[0035] The guide rod 7 has a connecting cavity inside; like Figure 4 As shown, the drive assembly includes an eccentric geared motor 9 and a drive gear 10. The drive gear 10 is eccentrically arranged with the guide rod 7. The output shaft of the eccentric geared motor 9 is fixedly connected to the axis of the drive gear 10. The drive gear 10 is rotatably connected inside the connecting cavity.

[0036] like Figure 1 , 4 As shown, one side of the connecting cavity passes through the guide rod 7 and the guide rib 8 and communicates with the inside of the mud discharge channel 3. The inner side of the guide sleeve 1 is recessed to form a circumferential guide groove 11. like Figure 4As shown, the connecting assembly includes a connecting gear 12, which is disposed inside the guide groove 11 and meshes with the drive gear 10.

[0037] like Figure 4 As shown, the guide groove 11 has several guide components inside the side opposite to the connecting cavity, and the several guide components are arranged in pairs on both sides of the connecting gear 12. like Figure 5 As shown, the guide assembly includes a connecting seat 13 and a guide wheel 14. The guide wheel 14 is rotatably connected to the connecting seat 13, and the circumferential surface of the guide wheel 14 contacts the circular bottom surface of the connecting gear 12.

[0038] like Figure 1 As shown, the length of the mud-discharging section is greater than the length of the cutting section, and the front end of the mud-discharging section is located in front of the cutting section.

[0039] How to use: In practical use, the outer end of the guide rod 7 is inserted into the pre-drilled hole, and the guide rod 7 is driven to rotate by the drive motor. The eccentric reduction motor 9 drives the drive gear 10 to rotate, and the drive gear 10 meshes with the connecting gear 12, which in turn drives the external guide sleeve 1 to rotate. The guide sleeve 1 drives the front cutting head 2 to rotate, and the cutting head 2 cuts and excavates the coating. The cutting head 2 cuts the soil layer, causing the soil layer to be cut to peel off. The peeled soil is guided into the mud discharge channel 3 through the first guide groove 4. The guide rib 8 guides the soil so that the soil is discharged outward through the mud discharge channel 3. When the guide sleeve 1 moves forward, it compacts the inner wall of the cut hole from back to front through the arc surface 5, reducing the subsequent shedding of soil. After the hole is drilled, the entire device is pulled out of the hole and back. During the retraction of the device, the soil inside the channel is scooped up by the second guide groove 6 at the rear end of the guide sleeve 1, reducing the amount of soil residue inside the channel, ensuring the normal use of the channel, and facilitating the insertion of pipelines later.

[0040] The cutting head 2 cuts the hole from the outside to the inside, achieving efficient hole enlargement without the need to replace the drill rod, and facilitating the collection and discharge of the soil generated during drilling.

[0041] This solution also includes a controller, the location of which is set by the operator according to the actual situation. The controller is used to control the electrical components used in this solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, displays, computer input devices, switches, communication devices, lights, speakers, and microphones. The controller is an Intel processor, AMD processor, PLC controller, ARM processor, or microcontroller. It is used in conjunction with a motherboard, memory modules, storage media, and power supply, which is AC power or a lithium battery. When a display screen is provided, a graphics card is also included. For the operating principle of the controller, please refer to "Principles of Automatic Control," "Microcontroller Principles and Application Simulation Cases," and "Sensor Principles and Applications" published by Tsinghua University Press. Other books in this field can also be consulted. Other automation control and electrical components not mentioned are knowledge well known to those skilled in the art and will not be described further here.

[0042] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product form and style of the above-described specific embodiments. Any trenchless pipe-pulling construction device that conforms to the claims of the present invention and any appropriate changes or modifications made to it by a person skilled in the art should fall within the patent protection scope of the present invention.

Claims

1. A trenchless pipe-dragging construction device, characterized in that: It includes a cutting part and a mud discharge part. The cutting part has a mud discharge channel (3) in the axial direction. The mud discharge part is rotatably connected to the mud discharge channel (3). The mud discharge part and the cutting part are coaxially arranged. The cutting part includes a guide sleeve (1) and several cutting heads (2). The cutting heads (2) are fixed to the front end of the guide sleeve (1). The several cutting heads (2) are evenly arranged along the circumference of the guide sleeve (1). The front end of the cutting head (2) is recessed in the direction away from the mud discharge channel (3) to form an arc-shaped first guide groove (4). The first guide groove (4) is connected to the inside of the mud discharge channel (3). The inner diameter of the end of the first guide groove (4) away from the guide sleeve (1) is larger than the diameter of the mud discharge channel (3). The guide sleeve (1) is cylindrical. The mud discharge channel (3) is coaxially arranged with the guide sleeve (1) and the cutting head (2). The inner side of the guide sleeve (1) away from the cutting head (2) is recessed to form a second guide groove (6). The inner diameter of the second guide groove (6) away from the cutting head (2) is larger than the diameter of the mud discharge channel (3). The mud discharge section includes a guide rod (7), and the circumferential surface of the guide rod (7) is provided with a spiral guide rib (8). The guide rod (7) is coaxially arranged with the guide sleeve (1), and the end of the guide rod (7) away from the cutting head (2) is connected to a mud discharge motor. The guide rod (7) is equipped with a drive assembly inside, which drives the cutting part to rotate through the drive assembly inside the mud discharge part. The guide sleeve (1) is equipped with a connecting assembly inside, and the drive assembly and the connecting assembly are connected in cooperation. The guide rod (7) has a connecting cavity inside; The drive assembly includes an eccentric geared motor (9) and a drive gear (10). The drive gear (10) is eccentrically arranged with the guide rod (7). The output shaft of the eccentric geared motor (9) is fixedly connected to the axis of the drive gear (10). The drive gear (10) is rotatably connected inside the connecting cavity.

2. The trenchless pipe-dragging construction device according to claim 1, characterized in that: The outer side of the cutting head (2) is an arc surface (5), and the front end of the cutting head (2) is a cutting blade.

3. The trenchless pipe-dragging construction device according to claim 1, characterized in that: The diameter of the guide sleeve (1) is larger than the diameter of the cutting head (2). The front end of the guide sleeve (1) protrudes outward to form an arc surface (5), and the inner side of the arc surface (5) is integrally formed with the cutting head (2).

4. The trenchless pipe-dragging construction device according to claim 1, characterized in that: One side of the connecting cavity passes through the guide rod (7) and the guide rib (8) and communicates with the inside of the mud discharge channel (3). The inner side of the guide sleeve (1) is recessed to form a circumferential guide groove (11). The connecting assembly includes a connecting gear (12), which is disposed inside the guide groove (11) and meshes with the drive gear (10).

5. The trenchless pipe-dragging construction device according to claim 4, characterized in that: The guide groove (11) has several guide components inside the side opposite to the connecting cavity, and the guide components are arranged in pairs on both sides of the connecting gear (12). The guide assembly includes a connecting seat (13) and a guide wheel (14). The guide wheel (14) is rotatably connected to the connecting seat (13), and the circumferential surface of the guide wheel (14) contacts the circular bottom surface of the connecting gear (12).

6. The trenchless pipe-dragging construction device according to claim 1, characterized in that: The length of the mud-draining section is greater than the length of the cutting section, and the front end of the mud-draining section is located in front of the cutting section.

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