Traction drill bit used in underground pipeline

Abstract

The traction drill bit used in the underground pipeline comprises a center shaft, a hydraulic rod is arranged at one end of the center shaft, a first supporting device is arranged at the end, away from the center shaft, of the hydraulic rod in a sleeved mode, a second supporting device is arranged on the center shaft in a sleeved mode, and the first supporting device and the second supporting device are consistent in structure. The first supporting device comprises a first linear electric cylinder, a second linear electric cylinder and a third linear electric cylinder which are evenly distributed in the axial direction, and arc-shaped plates are fixedly installed at the centrifugal ends of the first linear electric cylinder, the second linear electric cylinder and the third linear electric cylinder correspondingly. The first linear electric cylinder, the second linear electric cylinder and the third linear electric cylinder are used for driving the arc-shaped plate to be close to / away from the hydraulic rod, pressure sensors are arranged on the centrifugal sides of the arc-shaped plate, a plurality of hoops are fixedly installed on the center shaft, and a cable is wound around the center shaft and locked and fixed through the hoops. And then the hydraulic rod and the center shaft are matched to realize mutual telescopic movement matching, so that the whole device can move in the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of cable modification technology, and in particular to a traction drill bit for use in underground pipelines. Background Technology

[0002] Underground cable installation offers numerous advantages. Based on information from multiple authoritative sources, the main benefits are as follows: 1. Improved power supply reliability and strong resistance to natural interference: Underground cables are unaffected by natural factors such as lightning, wind, rain, salt spray, and pollution, significantly reducing the risk of power outages due to weather or natural disasters. Reduced risk of external damage: Avoiding damage from tree growth, construction excavation, etc., ensuring long-term stable operation of the line. Improved transmission efficiency: Underground cables can accommodate more circuits (e.g., 20 circuits in the same channel) and use highly conductive copper conductors, reducing transmission losses. 2. Optimized urban environment: Eliminating visual pollution, replacing cluttered overhead lines, and improving street cleanliness and urban aesthetics. Optimized space utilization: Reducing the occupation of ground space, avoiding the safety distance restrictions of overhead lines on buildings, freeing up more land resources. Reduced safety hazards: Concealing exposed metal conductors reduces the risk of electric shock accidents and avoids safety hazards such as fires caused by messy wiring. 3. Promoted sustainable urban development and saved land resources: Underground cables occupy a small area, making them particularly suitable for land-scarce areas such as city centers, improving land use efficiency. Supports low-carbon development; reduces power transmission losses, indirectly reducing energy waste, and aligns with the concept of green city development. Facilitates maintenance and management; concealing the cables reduces maintenance difficulty and lowers operating and maintenance costs. IV. Other added value: Enhances traffic planning flexibility: Underground cables reduce road space occupation, optimizing traffic layout. Enhances public safety: Prevents traffic accidents or security risks caused by cable issues.

[0003] However, when laying cables in power engineering projects, conduit cable pullers are often used. Traditional conduit cable pullers have relatively simple functions and no drilling tools on the pull line. If there is a blockage in the conduit, the pull line will not be able to continue, causing the project to be delayed. Utility Model Content

[0004] The purpose of this invention is to provide a traction drill bit for use in underground pipelines, so as to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A traction drill bit for use in underground pipelines includes a central shaft, a hydraulic rod is provided at one end of the central shaft, a first support device is sleeved at the end of the hydraulic rod away from the central shaft, and a second support device is sleeved on the central shaft, wherein the first support device and the second support device have the same structure.

[0007] The first support device includes a first linear electric cylinder, a second linear electric cylinder, and a third linear electric cylinder that are evenly distributed axially. An arc-shaped plate is fixedly installed on the centrifugal end of each of the first, second, and third linear electric cylinders. The first, second, and third linear electric cylinders are used to drive the arc-shaped plate to move closer to or away from the hydraulic rod. A pressure sensor is provided on the centrifugal side of each arc-shaped plate. Multiple clamps are fixedly installed on the central shaft.

[0008] By adopting the above technical solution, the cable is wound around the central shaft and locked in place by a clamp. Then, the hydraulic rod and the central shaft work together to achieve telescopic movement. The central shaft or hydraulic rod can be locked inside the pipe by the first and second support devices. The entire device moves inside the pipe by the cooperation of the central shaft, hydraulic rod, first support device and second support device. Compared with traditional drill bits and pipe traction equipment, this device is simpler and will not cause excessive damage to the inner wall of the pipe.

[0009] In a further embodiment, the centrifugal end of the first linear electric cylinder, the second linear electric cylinder, and the third linear electric cylinder are all provided with threaded joints, and the center position of the arc plate is provided with a threaded hole.

[0010] By adopting the above technical solution, it is convenient to replace the arc plate according to the different inner diameters of the pipe. The arc plate is used to increase the force-bearing area of ​​the centrifugal sections of the first, second and third linear electric cylinders when they are pressed against the inner wall of the pipe.

[0011] In a further embodiment, the centrifugal side of the arc-shaped plate is provided with anti-slip texture.

[0012] In a further embodiment, the central shaft is hollow inside, and a control terminal is fixedly installed inside the central shaft. The control terminal is connected to the first support device and the second support device by wired signal.

[0013] In a further embodiment, a camera and a fill light are fixedly mounted on the central axis.

[0014] In a further embodiment, both the camera and the fill light are provided with transparent protective covers on their outer sides.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. By winding the cable around the central shaft and locking it with a clamp, the hydraulic rod and the central shaft work together to achieve telescopic movement. The central shaft or hydraulic rod can be locked inside the pipe by the first and second support devices. The entire device moves inside the pipe through the cooperation of the central shaft, hydraulic rod, first support device and second support device. Compared with traditional drill bits and pipe traction equipment, this device is simpler and does not cause excessive damage to the inner wall of the pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] In the diagram, 1 is the central shaft; 2 is the hydraulic rod; 3 is the first support device; 31 is the first linear electric cylinder; 32 is the second linear electric cylinder; 33 is the third linear electric cylinder; 4 is the second support device; 5 is the arc plate; and 6 is the clamp. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0021] Example 1:

[0022] like Figure 1 As shown, a traction drill bit for use in underground pipelines includes a central shaft 1, a hydraulic rod 2 is provided at one end of the central shaft 1, a first support device 3 is sleeved at the end of the hydraulic rod 2 away from the central shaft 1, and a second support device 4 is sleeved on the central shaft 1. The first support device 3 and the second support device 4 have the same structure.

[0023] The first support device 3 includes a first linear electric cylinder 31, a second linear electric cylinder 32, and a third linear electric cylinder 33 evenly distributed axially. An arc-shaped plate 5 is fixedly installed on the centrifugal end of each of the three linear electric cylinders 31, 32, and 33. The three linear electric cylinders 31, 32, and 33 are used to drive the arc-shaped plate 5 to move closer to / away from the hydraulic rod 2. A pressure sensor is provided on the centrifugal side of the arc-shaped plate 5. Multiple clamps 6 are fixedly installed on the central shaft 1. A threaded joint is provided on the centrifugal end of each of the three linear electric cylinders 31, 32, and 33. A threaded hole is provided at the center of the arc-shaped plate 5. Anti-slip texture is provided on the centrifugal side of the arc-shaped plate 5. The central shaft 1 is hollow inside. A control terminal is fixedly installed inside the central shaft 1. The control terminal is connected to the first support device 3 and the second support device 4 by wired signal. A camera and a fill light are fixedly installed on the central shaft 1. A transparent protective cover is provided on the outside of the camera and the fill light.

[0024] The specific implementation process is as follows: The cable is wound around the central shaft and locked in place with a clamp. Then, the hydraulic rod and the central shaft work together to achieve telescopic movement. The central shaft or hydraulic rod can be locked inside the pipe by the first and second support devices. The entire device moves inside the pipe through the cooperation of the central shaft, hydraulic rod, first support device and second support device. Compared with traditional drill bits and pipe traction equipment, this device is simpler and will not cause excessive damage to the inner wall of the pipe.

[0025] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A drag bit for use in a subterranean pipeline, characterized by: Including the center axis (1), one end of the center axis (1) is provided with a hydraulic rod (2), the first support device (3) is sleeved on the far end of the center axis (1), the second support device (4) is sleeved on the center axis (1), the structure of the first support device (3) and the second support device (4) is consistent; The first support device (3) comprises first, second and third linear electric cylinders (31, 32 and 33) which are uniformly distributed in the axial direction, arc-shaped plates (5) are fixedly installed on the centrifugal ends of the first, second and third linear electric cylinders (31, 32 and 33), the first, second and third linear electric cylinders (31, 32 and 33) are used to drive the arc-shaped plates (5) to move close to or away from the hydraulic rod (2), pressure sensors are arranged on the centrifugal sides of the arc-shaped plates (5), and a plurality of hoops (6) are fixedly installed on the center axis (1).

2. A drag bit for use in a downhole conduit as defined in claim 1, wherein: The centrifugal ends of the first, second and third linear electric cylinders (31, 32 and 33) are provided with threaded joints, and the center positions of the arc-shaped plates (5) are provided with threaded holes.

3. A drag bit for use in a downhole conduit as defined in claim 1, wherein: Anti-skid patterns are arranged on the centrifugal sides of the arc-shaped plates (5).

4. An earth penetrating conduit within pulling bit according to claim 1, characterized in that: The center axis (1) is internally hollow, a control terminal is fixedly installed in the center axis (1), and the control terminal is connected with the first support device (3) and the second support device (4) through wired electrical signals.

5. An earth penetrating conduit within pulling bit according to claim 1, wherein: A camera and a light supplement lamp are fixedly installed on the center axis (1).

6. An earth penetrating conduit within pulling bit according to claim 5, characterized in that: Transparent protective shells are arranged on the outer sides of the camera and the light supplement lamp.

Images