Threading rod guide head centering device for pipeline threading device

Abstract

The utility model relates to a threading rod guide head centering device for a pipeline threading device, and relates to the field of pipeline threading equipment, the threading rod guide head centering device comprises a threading rod and a guide rod, the threading rod is in threaded connection with the guide rod, the threading rod is used for being connected with a wire set, the guide rod is provided with a plurality of elastic pieces, and the elastic pieces are installed on the circumferential portion of the guide rod. The threading rod has the effect of reducing the possibility of hindering the passing of the threading rod due to the dislocation of the pipeline interface.

Description

Technical Field

[0001] This application relates to the field of conduit threading equipment, and in particular to a centering device for a threading rod guide head for a conduit threader. Background Technology

[0002] A conduit cable puller is a tool used to pull wires, cables, or optical fibers through conduits, cable ducts, or other concealed conduits. It is typically used by electricians, network installers, or construction workers.

[0003] In actual operation, due to misalignment of the interface when the pipe is pre-buried or misalignment between pipes caused by foundation settlement and deformation in the later stage, and due to the influence of gravity, the wire rod is usually moved along the bottom of the pipe. However, when it moves to the misaligned pipe interface, the misalignment of the pipe will affect the passage of the wire rod, thus increasing the difficulty of wire pulling. Utility Model Content

[0004] In order to reduce the possibility of obstructing the passage of the threading rod due to misalignment of pipe interfaces, this application provides a threading rod guide head centering device for pipe threading devices.

[0005] The technical solution provided in this application for a centering device for a conduit threader guide head is as follows:

[0006] A centering device for a conduit threader guide head includes a threading rod and a guide rod. The threading rod is threadedly connected to the guide rod. The threading rod is used to connect a wire assembly. Several spring clips are installed on the guide rod, and the spring clips are installed on the circumferential part of the guide rod.

[0007] By adopting the above technical solution, the threaded connection between the threading rod and the guide rod allows for flexible assembly and disassembly, facilitating component replacement or adjustment according to actual needs. Several spring clips installed on the circumferential part of the guide rod can contact the inner wall of the pipe, providing radial support during threading and keeping the threading rod centered within the pipe. This reduces threading difficulties caused by pipe misalignment, improving threading efficiency and success rate.

[0008] In one specific implementation scheme, a limiting component is also included, wherein several limiting components are provided with corresponding spring pieces, the limiting components are evenly installed on the circumferential part of the guide rod, and the spring pieces are correspondingly installed on the limiting components.

[0009] By adopting the above technical solution, the limiting component can effectively fix and support the spring sheet, ensuring its uniform distribution around the guide rod. The cooperation between the spring sheet and the limiting component allows the threading rod to maintain a relatively centered state when moving inside the pipe, thereby reducing threading difficulties caused by pipe misalignment or gravity, and improving threading efficiency and reliability.

[0010] In one specific implementation, the limiting component includes a limiting rod and a limiting block. A limiting groove is formed on the guiding rod. The limiting rod is installed in the limiting groove and installed along the length of the limiting groove. Two limiting blocks are provided. The two limiting blocks are respectively installed at both ends of the limiting groove and are slidably connected to the limiting rod. The two ends of the spring piece are respectively installed on the two limiting blocks.

[0011] By adopting the above technical solution, the setting of the limiting rod and limiting block allows the spring piece to be stably installed in the circumferential direction of the guide rod. At the same time, the positioning effect of the limiting groove on the limiting rod further enhances the stability of the overall structure. The sliding connection design of the two limiting blocks and the limiting rod allows the spring piece to have a certain amount of room to move when under force, thus better adapting to the complex environment inside the pipeline. The two ends of the spring piece are respectively installed on the two limiting blocks. This structure ensures that the spring piece is subjected to uniform force, which can effectively prevent the threading rod from sticking to the bottom of the pipeline due to gravity, thereby reducing the obstruction caused by pipeline misalignment during the threading process and improving the threading efficiency.

[0012] In one specific implementation, the system further includes limiting springs, two of which are provided corresponding to the limiting blocks. The two limiting springs are sleeved on the limiting rod, one end of the limiting spring is fixedly connected to the side wall of the limiting groove, and the other end of the limiting spring is fixedly connected to the limiting block.

[0013] By adopting the above technical solution, the limiting spring provides elastic support to the limiting block, allowing it a certain range of motion within the limiting groove. When the threading rod centering device moves through the misaligned pipe, the limiting spring buffers the impact force generated by the pipe misalignment on the spring and guide rod, ensuring stable contact between the spring and the inner wall of the pipe and improving the passability of the threader in complex pipe environments. Simultaneously, the elastic restoring force of the limiting spring helps maintain the tension of the spring, ensuring the threading rod remains centered in the pipe and reducing the difficulty of threading.

[0014] In one specific implementation scheme, two sets of limiting blocks and limiting springs are symmetrically installed at both ends of the limiting groove.

[0015] By adopting the above technical solution, the limiting blocks and limiting springs are symmetrically installed at both ends of the limiting groove, making the circumferential force on the guide rod more uniform. This symmetrical design can effectively prevent the spring from shifting or tilting during operation, thereby ensuring that the threading rod always remains centered in the pipe, reducing threading resistance caused by pipe misalignment or deformation. In addition, the symmetrical structure can also improve the overall stability of the device and extend its service life.

[0016] In one specific implementation, a ball bearing is also included, which is mounted on a spring and is capable of pressing against the inner wall of the pipe.

[0017] By adopting the above technical solution, when the threading rod moves in the pipe, the ball bearings contact and roll against the inner wall of the pipe. This design effectively reduces the friction between the elastic sheet and the inner wall of the pipe, thereby reducing the resistance caused by friction during threading and improving threading efficiency.

[0018] In one specific implementation, a ball socket is provided at the center of the spring, and the ball is installed in the ball socket and can rotate within the ball socket.

[0019] In one specific implementation, a tension sensor is also included, which is installed at the end where the threading rod connects to the guide rod. The tension sensor is threadedly connected to the guide rod, thereby connecting the guide rod to the threading rod.

[0020] By adopting the above technical solution, the tension sensor can monitor the connection status and stress between the threading rod and the guide rod in real time, ensuring the reliability of their connection. During the threading process, when encountering pipe misalignment or increased resistance, the tension sensor can promptly report changes in force, thereby preventing damage to the threading rod or guide rod due to excessive force. Furthermore, the threaded connection between the tension sensor and the guide rod not only facilitates installation and disassembly but also ensures the stability of the connection, improving the overall ease of use and safety of the device.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The threading rod and the guide rod are connected by threads. Combined with the spring piece design on the guide rod, the threading rod can be kept in the center of the pipe, effectively avoiding the problem of reduced passage caused by the threading rod sticking to the bottom of the pipe due to gravity.

[0023] 2. The spring clip is installed around the guide rod, which can provide uniform support force during the threading process, ensuring that the threading rod can still pass smoothly when it encounters pipe misalignment or deformation, significantly reducing the difficulty of threading;

[0024] 3. The threaded connection between the threading rod and the guide rod facilitates disassembly and assembly, enhancing the flexibility and practicality of the device and meeting threading needs in various scenarios. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of this application.

[0026] Figure 2 This is a cross-sectional view of an embodiment of this application.

[0027] Explanation of reference numerals in the attached diagram: 1. Threading rod; 2. Guide rod; 21. Limiting groove; 3. Spring piece; 4. Limiting assembly; 41. Limiting rod; 42. Limiting block; 43. Limiting spring; 5. Ball bearing; 6. Tension sensor. Detailed Implementation

[0028] This application discloses a centering device for a guide head of a conduit threader.

[0029] like Figure 1 As shown, the centering device for the guide head of the pipe threader includes a threading rod 1, a guide rod 2, and several spring pieces 3. One end of the threading rod 1 is connected to one end of the guide rod 2 by a threaded connection. The threading rod 1 is used to connect the cable. Several spring pieces 3 are installed on the guide rod 2. The spring pieces 3 are evenly distributed on the circumferential part of the middle of the guide rod 2, so that the guide tube is limited to the middle part of the pipe by supporting the inner wall of the pipe through the spring pieces 3.

[0030] The spring piece 3 is preferably made of spring steel with a constant thickness. The spring piece 3 is curved in an arc shape, and the bending radius matches the diameter of the guide rod 2. The number of spring pieces 3 can be adjusted according to the pipe diameter to ensure that the threading rod 1 can remain stably centered in the pipe.

[0031] like Figure 2 As shown in the embodiment of this application, several limiting components 4 are also included. The limiting components 4 are used to adjust the tension and position of the spring piece 3. The limiting components 4 include a limiting rod 41 and a limiting block 42. The limiting rod 41 is made of stainless steel and has a moderate diameter. A limiting groove 21 is opened on the guide rod 2, and the limiting rod 41 is installed in the limiting groove 21. The limiting rod 41 is installed along the length direction of the limiting groove 21. Two limiting blocks 42 are provided, located at both ends of the limiting groove 21 respectively, and are installed on the limiting rod 41 by sliding fit. The limiting blocks 42 are made of high-strength engineering plastic and have good wear resistance and impact resistance.

[0032] The limiting assembly 4 also includes limiting springs 43. Two sets of limiting springs 43 are provided, each sleeved on both ends of the limiting rod 41. The limiting springs 43 are made of carbon steel wire with a suitable diameter. One end of each limiting spring 43 is fixedly connected to the side wall of the limiting groove 21, and the other end is fixedly connected to the limiting block 42. By adjusting the compression of the limiting springs 43, the tension of the spring 3 can be precisely controlled, thus adapting to pipe environments of different diameters. The limiting springs 43 are also designed with an automatic reset function, quickly returning to their initial state after the threading rod 1 passes through an obstacle point.

[0033] To further improve the adaptability of the device, a ball-and-socket structure is installed at the center of the spring 3. The ball-and-socket is made of hard alloy material and contains rolling balls 5. The rolling balls 5 can rotate relative to the ball-and-socket, forming rolling friction instead of sliding friction, thereby significantly reducing the resistance to threading. The outer wall of the ball-and-socket is set as an arc surface, which can achieve uniform force distribution when in contact with the inner wall of the pipe, avoiding excessive local pressure that could damage the pipe.

[0034] In this embodiment, a tension sensor 6 is also included. The tension sensor 6 is installed at the end where the threading rod 1 connects to the guide rod 2, and is used to monitor the tension generated during the threading process in real time. The tension sensor 6 adopts a strain gauge design, providing high accuracy. The tension sensor 6 is fixed to the guide rod 2 via a threaded connection, ensuring a reliable connection. The installation of the tension sensor 6 also has an overload protection function; when the detected tension exceeds a set threshold, it can promptly issue an alarm to prompt the operator to take appropriate measures.

[0035] By adding detailed designs to the limiting component 4 and the tension sensor 6, the function of the centering device for the guide head of the pipe threader has been further improved. The design of the limiting component 4 allows for more precise tension adjustment of the spring 3, enabling it to adapt to pipe environments of different diameters and shapes. The real-time monitoring function of the tension sensor 6 provides operators with important reference data, ensuring the safety and reliability of the threading process.

[0036] The implementation principle of the centering device for a pipe threader guide head in this embodiment is as follows: By setting the guide rod 2 and the spring piece 3, the threading rod 1 is always kept in a centered state inside the pipe, thereby effectively avoiding the phenomenon of sticking to the wall due to gravity. The elastic support of the spring piece 3 can adapt to the irregular shape of the inner wall of the pipe, ensuring that the threading rod 1 passes smoothly through misaligned or deformed pipe interfaces. The design of the limiting component 4 provides a flexible adjustment function, which can adjust the tension and position of the spring piece 3 according to the actual working conditions. The introduction of the ball socket and ball bearing 5 structure further reduces the threading resistance and improves the threading efficiency. The use of the tension sensor 6 enables real-time monitoring of the threading process, ensuring safe and reliable operation. The overall solution significantly improves the performance of the pipe threader through structural optimization and functional innovation.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A centering device for a guide head of a conduit threader, characterized in that: It includes a threading rod (1) and a guide rod (2). The threading rod (1) is threadedly connected to the guide rod (2). The threading rod (1) is used to connect the wire group. Several spring pieces (3) are installed on the guide rod (2). Several spring pieces (3) are installed on the circumferential part of the guide rod (2).

2. The centering device for the guide head of the conduit threader according to claim 1, characterized in that: It also includes a limiting component (4), which has several corresponding spring pieces (3). The limiting component (4) is evenly installed on the circumferential part of the guide rod (2), and the spring pieces (3) are correspondingly installed on the limiting component (4).

3. The centering device for the guide head of the conduit threader according to claim 2, characterized in that: The limiting component (4) includes a limiting rod (41) and a limiting block (42). A limiting groove (21) is provided on the guide rod (2). The limiting rod (41) is installed in the limiting groove (21) and installed along the length direction of the limiting groove (21). There are two limiting blocks (42). The two limiting blocks (42) are respectively installed at both ends of the limiting groove (21) and are slidably connected to the limiting rod (41). The two ends of the spring piece (3) are respectively installed on the two limiting blocks (42).

4. The centering device for the guide head of the conduit threader according to claim 3, characterized in that: It also includes a limiting spring (43), two of which are provided corresponding to the limiting block (42). The two limiting springs (43) are sleeved on the limiting rod (41). One end of the limiting spring (43) is fixedly connected to the side wall of the limiting groove (21), and the other end of the limiting spring (43) is fixedly connected to the limiting block (42).

5. The centering device for the guide head of the conduit threader according to claim 3, characterized in that: Two sets of limiting blocks (42) and limiting springs (43) are symmetrically installed at both ends of the limiting groove (21).

6. The centering device for the guide head of the conduit threader according to claim 1, characterized in that: It also includes a ball bearing (5), which is mounted on a spring sheet (3) and can press against the inner wall of the pipe.

7. The centering device for the guide head of the conduit threader according to claim 6, characterized in that: The spring (3) has a ball socket in the center, and the ball (5) is installed in the ball socket and can rotate in the ball socket.

8. The centering device for the guide head of the conduit threader according to claim 1, characterized in that: It also includes a tension sensor (6), which is installed at the end where the threading rod (1) connects to the guide rod (2). The tension sensor (6) is threadedly connected to the guide rod (2), thereby connecting the guide rod (2) to the threading rod (1).

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