Crawler for non-excavation repair of pipeline

Abstract

The utility model discloses a crawler for pipeline non-excavation repair, relates to the technical field of pipeline repair, and solves the problems that the angle of a nozzle of an existing crawler needs to be manually adjusted every time to adapt to different gap positions, and the process is tedious and time-consuming. In addition, most of the repairing glue depends on natural air drying to achieve the curing effect, so that the technical problem that the curing efficiency is remarkably reduced is solved. Comprising a machine body and telescopic crawling mechanisms, the machine body comprises a column body and mounting base plates arranged at the two ends of the column body, and the two telescopic crawling mechanisms are arranged on the two mounting base plates correspondingly; the base is arranged on the column body in a sleeving mode, and a rotating cylinder is rotationally arranged in an end opening of the base through a bearing; according to the utility model, the angle of the nozzle does not need to be manually adjusted, so that the time is saved, the operation burden is reduced, the primary drying process of the colloid is effectively accelerated, and the curing efficiency is obviously improved, thereby shortening the period of the whole repairing work and ensuring the rapid completion of the repairing work.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline repair, and in particular relates to a crawler for trenchless pipeline repair. Background Art

[0002] The trenchless pipeline repair crawler is a device that can automatically crawl inside a pipeline. It combines technologies from multiple fields such as mechanics, electronics, and control, and can move forward, backward, and rotate inside the pipeline. At the same time, it carries various detection and repair tools to complete tasks such as pipeline detection, cleaning, and repair. It mainly includes: a frame, a control system, an image recording system, a monitor system, signal lines, and a signal line rack. For example: Chinese patent application No. 202120767129.0 is an automatic crawling repair robot for drainage pipes. This patent controls the opening and closing of the crawling arm through an automatic opening and closing module, and automatically moves through the crawling mechanism. There is no need for manual entry into the pipeline, and the robot can be controlled to move forward and backward from the ground, thereby increasing the degree of automation of the equipment, improving the workers' workflow, and making repair work more convenient and faster.

[0003] Currently, when using existing crawler technology to spray-repair pipeline cracks, operators often need to manually adjust the nozzle angle to accommodate the different crack locations after detecting the leak location and applying the repair glue. This process is both tedious and time-consuming. Furthermore, due to the general lack of fast-curing structures for spray-applied repair materials, these repair glues often rely on natural air drying to achieve a cure effect, which significantly reduces curing efficiency and prolongs the overall repair cycle.

[0004] Therefore, based on the above problems, we designed a crawler for trenchless repair of pipelines. Utility Model Content

[0005] This utility model aims to address at least one of the technical problems existing in the prior art. To this end, it proposes a crawler for trenchless pipeline repair. This crawler eliminates the cumbersome and time-consuming process of manually adjusting the nozzle angle to accommodate different gap locations, as is common with existing crawlers. Furthermore, most repair glues rely on natural air drying to cure, significantly reducing curing efficiency.

[0006] To achieve the above objectives, according to an embodiment of the first aspect of the present invention, a crawler for trenchless pipeline repair is provided, comprising a body and a telescopic crawling mechanism, wherein the body comprises a column and mounting bases disposed at both ends of the column, and the telescopic crawling mechanism is provided in two groups, one of which is disposed on each mounting base;

[0007] Also includes:

[0008] The base is sleeved on the column, and a rotating cylinder is rotatably arranged in the port of the base through a bearing. The rotating cylinder is provided with a first mounting rod and a second mounting rod distributed in an inverted eight shape. The first mounting rod is provided with a nozzle, and the second mounting rod is provided with a curing lamp. The rotating cylinder is sleeved with a driven gear, and a main driving wheel meshing with the driven gear is rotatably arranged in the port of the base.

[0009] A further improvement is that each of the telescopic crawling mechanisms includes three outer support rods equidistantly arranged on the mounting base, a crawling wheel arranged at the end of each outer support rod, a ball screw rotatably arranged on both sides of the mounting base, a sliding member threaded on the ball screw, a driving strut equidistantly arranged on the sliding member and the other end of which is rotatably connected to each outer support rod, and a double-headed motor arranged in the column, and the main shafts at both ends of the double-headed motor are respectively connected to the two ball screws.

[0010] A further improvement is that guide members are connected to both sides of each mounting base plate, the guide members include several guide rods and an end plate connected to the end of the guide rods, and each sliding member is movably sleeved on the several guide rods.

[0011] A further improvement is that a DC servo motor is provided on the base, the main shaft of the DC servo motor is connected to the main drive wheel, and the base is H-shaped.

[0012] A further improvement is that an annular groove is provided on the inner wall surface of one side of the base, and rollers are provided on the sides of the mounting rod 1 and the mounting rod 2, and the rollers are slidably arranged in the annular groove.

[0013] A further improvement is that two driving devices are additionally configured, each driving device is connected to one of the outer support rods in each group, and is used to drive the crawler wheel. The driving device includes a driving motor and a group of spiral bevel gears.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When the crawler of the utility model accurately locates the leaking gap, its built-in DC servo motor starts immediately, driving the main drive wheel, driven gear and rotating cylinder to rotate at a constant speed. This process automatically adjusts the nozzle on the first mounting rod to the optimal angle, ensuring that the nozzle is accurately aligned with the gap, eliminating the step of manually adjusting the nozzle angle, which not only saves time but also reduces the operational burden. Subsequently, the pump group starts working, extracting the colloid in the glue storage cylinder and spraying it accurately into the gap through the nozzle. After the colloid spraying is completed, the DC servo motor continues to drive the curing light on the second mounting rod to quickly align it with the gap area just sprayed, achieving instant pre-curing treatment. This step effectively accelerates the initial drying process of the colloid and significantly improves the curing efficiency, thereby shortening the overall repair cycle and ensuring the rapid completion of the repair work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-section of the spray curing device on the machine body of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional side view of the spray curing device of the present invention.

[0019] Markings in the figure:

[0020] 1. Telescopic crawling mechanism; 11. Driving support rod; 12. Guide member; 121. End plate; 122. Guide rod; 13. Crawling wheel; 14. Sliding member; 15. Driving device; 16. Ball screw; 17. External support rod; 18. Double-head motor;

[0021] 2. Machine body; 21. Mounting base plate; 22. Column;

[0022] 3. Base; 31. Rotating cylinder; 32. Mounting rod 1; 33. Mounting rod 2; 34. Nozzle; 35. Curing lamp; 36. Driven gear; 37. Main drive wheel; 38. DC servo motor; 301. Groove; 302. Roller. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1 and Figure 2As shown, a crawler for trenchless pipeline repair includes a body 2 and a telescopic crawling mechanism 1. The body 2 includes a column 22 and mounting bases 21 provided at both ends of the column 22. The telescopic crawling mechanism 1 is provided with two groups, which are respectively provided on the two mounting bases 21.

[0025] Specifically, as a preferred embodiment, each telescopic crawling mechanism 1 includes three outer support rods 17 equidistantly rotatably arranged on a mounting base plate 21, a crawling wheel 13 arranged at the end of each outer support rod 17, a ball screw 16 rotatably arranged on both sides of the mounting base plate 21, a sliding member 14 threadedly sleeved on the ball screw 16, a driving support rod 11 equidistantly rotatably arranged on the sliding member 14 and the other end of which is rotatably connected to each outer support rod 17, and a double-headed motor 18 arranged in a column 22, and the main shafts at both ends of the double-headed motor 18 are respectively connected to the two ball screws 16;

[0026] Specifically, as a preferred embodiment, guide members 12 are connected to both sides of each mounting base plate 21. The guide members 12 include several guide rods 122 and an end plate 121 connected to the ends of the guide rods 122. Each sliding member 14 is movably sleeved on the several guide rods 122 to improve the stability when adjusting the support.

[0027] like Figure 2 and Figure 3 As shown, when implemented, it includes: a base 3, which is sleeved on the column 22, a rotating cylinder 31 is rotatably provided in the port of the base 3 through a bearing, and a first mounting rod 32 and a second mounting rod 33 are arranged on the rotating cylinder 31 in an inverted eight-shaped pattern. The first mounting rod 32 is provided with a nozzle 34, and the second mounting rod 33 is provided with a curing lamp 35. A driven gear 36 is sleeved on the rotating cylinder 31, and a main driving wheel 37 is rotatably provided in the port of the base 3 and meshed with the driven gear 36;

[0028] Specifically, as a preferred embodiment, a DC servo motor 38 is provided on the base 3, the main shaft of the DC servo motor 38 is connected to the main driving wheel 37, and the base 3 is H-shaped;

[0029] Specifically, as a preferred embodiment, an annular groove 301 is provided on the inner wall surface of one side of the base 3, and rollers 302 are provided on the sides of the mounting rod 1 32 and the mounting rod 2 33. The rollers 302 are slidably set in the annular groove 301 and are used for limiting the sliding of the mounting rod 1 32 and the mounting rod 2 33, so that the sliding of the mounting rod 1 32 and the mounting rod 2 33 is more stable.

[0030] like Figures 1 to 3As shown, in this embodiment, two driving devices 15 are further configured. Each driving device 15 is connected to one of the outer support rods 17 in each group, and is used to drive the crawler wheel 13. The driving device 15 includes a driving motor and a set of spiral bevel gears. A liquid spraying structure is also configured. The glue spraying structure includes a glue storage cylinder and a pump group. Before installation, the pipeline of the pump group is connected to the nozzle 34.

[0031] In addition, the control system, image recording system, monitoring system, signal line and signal line rack in the application document are selected according to the actual needs of the site before the installation of the body 2. It should be noted that this part is a prior art and the working principle has been made public. This application document only addresses the existing crawler technology in handling the spray repair work of pipeline gaps. Whenever the leak location is detected and the repair glue is sprayed, the operator often needs to manually adjust the angle of the nozzle 34 to adapt to the different gap positions. This process is both cumbersome and time-consuming. In addition, due to the general lack of a fast-curing structure for spray repair materials in the design, most of these repair glues rely on natural air drying to achieve the curing effect, which significantly reduces the curing efficiency and thus prolongs the overall repair work cycle. Improvements are made to these shortcomings without involving other aspects. The following is an introduction to the working principle of a crawler for trenchless pipeline repair:

[0032] When the new model is installed and used, the on-site personnel operate the crawler to start the double-headed motor 18, which drives the ball screws 16 on both sides to rotate at a constant speed, so that the driving rods 11 of the two sets of telescopic crawling mechanisms 1 open the outer support rods 17 and make the crawling wheels 13 rest against the inner wall of the pipeline. At this time, the crawler is driven by the two sets of driving devices 15 to slide in the pipeline, and the image recording system and the monitoring system are used to find the leakage gap. The above image recording system and the monitoring system are used to find the leakage gap. The control principle of the above image recording system and the monitoring system is the existing technology;

[0033] When the crawler precisely locates the leaking gap, its built-in DC servo motor 38 starts immediately, driving the main drive wheel 37, driven gear 36, and rotating cylinder 31 to rotate at a constant speed. This process automatically adjusts the nozzle 34 on the mounting rod 1 32 to the optimal angle, ensuring that the nozzle 34 is precisely aligned with the gap. This eliminates the need to manually adjust the angle of the nozzle 34, saving time and reducing the operational burden. Subsequently, the pump unit begins to work, extracting the colloid from the glue storage cylinder and precisely spraying it into the gap through the nozzle 34. After the colloid is sprayed, the DC servo motor 38 continues to drive the curing lamp 35 on the mounting rod 2 33 to quickly align it with the newly sprayed gap area, achieving immediate pre-curing. This step effectively accelerates the initial drying process of the colloid and significantly improves the curing efficiency, thereby shortening the overall repair cycle and ensuring the rapid completion of the repair work.

[0034] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A crawler for trenchless pipeline repair, comprising a body (2) and a telescopic crawling mechanism (1), wherein the body (2) comprises a column (22) and mounting base plates (21) disposed at both ends of the column (22), and the telescopic crawling mechanism (1) is provided with two groups, which are respectively disposed on two mounting base plates (21); It is characterized in that Also includes: The base (3) is sleeved on the column (22), and a rotating cylinder (31) is rotatably arranged in the port of the base (3) through a bearing. The rotating cylinder (31) is provided with a first mounting rod (32) and a second mounting rod (33) distributed in an inverted eight shape at intervals, the first mounting rod (32) is provided with a nozzle (34), and the second mounting rod (33) is provided with a curing lamp (35). The rotating cylinder (31) is sleeved with a driven gear (36), and a main driving wheel (37) is rotatably arranged in the port of the base (3) and is meshed with the driven gear (36).

2. A crawler for trenchless pipeline repair according to claim 1, characterized in that: Each of the telescopic crawling mechanisms (1) comprises three outer support rods (17) rotatably arranged on a mounting base (21) at equal intervals, a crawling wheel (13) arranged at the end of each outer support rod (17), a ball screw (16) rotatably arranged on both sides of the mounting base (21), a sliding member (14) threadedly sleeved on the ball screw (16), a driving support rod (11) rotatably arranged on the sliding member (14) and the other end of which is rotatably connected to each outer support rod (17), and a double-headed motor (18) arranged in a column (22), wherein the main shafts at both ends of the double-headed motor (18) are respectively connected to the two ball screws (16).

3. A crawler for trenchless pipeline repair according to claim 2, characterized in that: Guide members (12) are connected to both sides of each mounting base plate (21), and the guide members (12) include a plurality of guide rods (122) and an end plate (121) connected to the ends of the guide rods (122). Each sliding member (14) is movably sleeved on the plurality of guide rods (122).

4. The crawler for trenchless pipeline repair according to claim 1, characterized in that: A DC servo motor (38) is provided on the base (3), the main shaft of the DC servo motor (38) is connected to the main driving wheel (37), and the base (3) is H-shaped.

5. The crawler for trenchless pipeline repair according to claim 1, characterized in that: An annular groove (301) is provided on the inner wall surface of one side of the base (3), and rollers (302) are provided on the sides of the first mounting rod (32) and the second mounting rod (33), and the rollers (302) are slidably arranged in the annular groove (301).

6. The crawler for trenchless pipeline repair according to claim 1, characterized in that: Two driving devices (15) are also provided. Each driving device (15) is connected to one of the outer support rods (17) in each group and is used to drive the crawler wheel (13). The driving device (15) includes a driving motor and a group of spiral bevel gears.

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