Spacer installation aid

Abstract

The present application relates to a kind of spacer installation auxiliary tools in spacer installation technical field, including pull rod, the pull rod both ends are each equipped with a can be hooked and pulled split conductor hook piece;The pull rod includes pipe fitting, pipe fitting inner cavity is close to the position of both ends each is equipped with one expansion neck segment, expansion neck segment outer section is embedded with protective spring, expansion neck segment inner section is embedded with the thread sleeve that can move along its axial direction, and expansion neck segment inner wall and the thread sleeve sleeve body between there is the convex edge groove structure of mutual cooperation, and the outer end surface of thread sleeve and the inner end surface of protective spring resist and cooperate;The present application can when the acting force between hook piece and split guide reaches certain, thread sleeve extrudes protective spring axial movement, so that convex edge groove structure is separated from cooperation, and then thread sleeve no longer rotates following the rotation of pipe fitting, so that the stress of split conductor is no longer increased, can effectively prevent that split conductor is stressed too large, leading to the position of fixed split conductor is damaged.

Description

Technical Field

[0001] This invention relates to the field of spacer installation technology, and in particular to an auxiliary tool for spacer installation. Background Technology

[0002] Ultra-high voltage compact lines use double-split or multi-split conductors. Spacers are typically installed on the split conductors to fix the spacing between them, preventing the conductors from whipping each other and suppressing aerodynamic vibrations and secondary span oscillations.

[0003] For double-split conductors, the operation method for personnel to install and replace spacers is usually "sitting on one conductor and holding the other conductor with their hands"; for four-split conductors, the operation method for personnel to install and replace spacers is usually "stepping on one or two conductors and holding the other two conductors with their hands"; the operation methods for six-split and eight-split conductors are the same as those for four-split conductors.

[0004] Currently, the spacing between split conductors is approximately 400-450mm, and the spacing between spacers is approximately 50-60m. During operation, it was found that workers concentrate their weight on one or two conductors by sitting or stepping on them, resulting in a large distance between the load-bearing conductor and other conductors. This makes it difficult to retract the conductors when installing spacers, causing significant inconvenience to the installation.

[0005] To address this, we designed an auxiliary tool for installing spacer bars. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention discloses an auxiliary tool for installing spacer bars.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] A spacer bar installation auxiliary tool includes a pull rod, each end of which is equipped with a hook for pulling split wires; the pull rod includes a tube, each inner cavity of which has an expanded neck section near both ends, the outer section of the expanded neck section is embedded with a protective spring, and the inner section of the expanded neck section is embedded with a threaded sleeve that can move along its axial direction, and the inner wall of the inner section of the expanded neck section and the body of the threaded sleeve have a mutually cooperating convex ridge and groove structure, and the outer end face of the threaded sleeve abuts against the inner end face of the protective spring; each of the two threaded sleeves is threadedly connected to a screw, and the outer end of the screw extends out of the tube and is connected to the corresponding hook;

[0009] The two threaded sleeves have opposite thread directions.

[0010] Preferably, a mating sleeve is fixedly embedded in the inner section of the necked section, and the inner wall of the mating sleeve and the threaded sleeve body have a mutually cooperating convex ridge and groove structure.

[0011] Preferably, the pipe fitting has a rotating handle in the middle of its body.

[0012] Preferably, the hook component includes a U-shaped plate, and one side wall of the U-shaped plate is connected to the outer end of the corresponding screw.

[0013] Preferably, one side wall of the U-shaped plate is connected to the outer end of the corresponding screw via the short side of the figure-eight plate, and the long side of the figure-eight plate corresponds to the open end of the U-shaped plate.

[0014] Preferably, the inner side of the U-shaped plate is provided with a thread wheel assembly.

[0015] Preferably, the wheel frame of the thread reel assembly is slidably connected to the U-shaped plate along the axial direction, and a slow rebound spring is provided between the wheel frame of the thread reel assembly and the closed end of the U-shaped plate.

[0016] Preferably, the outer end of the side wall of the U-shaped plate connecting screw is rotatably connected to the tip of the first V-shaped plate, the inner end of the other side wall of the U-shaped plate is rotatably connected to the outer end of the side wall of the second V-shaped plate, and the outer end of the other side wall of the second V-shaped plate is movably connected to the side wall of the first V-shaped plate along the length direction, so that when the second V-shaped plate rotates, it drives the first V-shaped plate to rotate and seals the opening end of the U-shaped plate.

[0017] A return spring is provided on the outer side wall of the second V-shaped plate near its rotation center.

[0018] Preferably, the sidewall of the first V-shaped plate corresponding to the second V-shaped plate is a U-shaped structure, and both sides of the U-shaped structure are provided with a sliding groove along its length direction. The outer end of the sidewall of the second V-shaped plate away from its rotation center is provided with a pin that is movably fitted into the sliding groove.

[0019] By employing the technical solution described above, the present invention has the following beneficial effects:

[0020] 1. When the force between the hook and the split guide reaches a certain level, the threaded sleeve compresses the protective spring and moves axially, causing the convex and groove structures to disengage. As a result, the threaded sleeve no longer rotates with the pipe fitting, so that the force on the split guide no longer increases. This effectively prevents the split guide from being subjected to excessive force, which could damage the position of the fixed split guide.

[0021] 2. The structure, which combines a slow-rebound spring and a V-shaped plate, can effectively prevent the split wire from detaching from the hook when it moves abruptly, ensuring the safety of the installation process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a partial cross-sectional view of the tie rod in this invention;

[0024] Figure 3 This is a partial cross-sectional view of the tie rod in another state in this invention;

[0025] Figure 4 This is a schematic diagram of the hook component in this invention;

[0026] Figure 5 This is a structural schematic diagram of the hook component in one state according to the present invention;

[0027] Figure 6 This is an assembly diagram of the U-shaped plate, the figure-7 plate, the thread wheel assembly, and the slow rebound spring in this invention;

[0028] Figure 7 This is a schematic diagram of the assembly of the first V-shaped plate and the second V-shaped plate in this invention.

[0029] In the diagram: 1. Pull rod; 11. Pipe fitting; 111. Neck expansion section; 12. Protective spring; 13. Threaded sleeve; 14. Raised ridge and groove structure; 15. Screw; 16. Mating sleeve; 17. Rotating handle; 2. Hook fitting; 21. U-shaped plate; 22. 7-shaped plate; 23. Threaded wheel assembly; 24. Slow return spring; 25. First V-shaped plate; 251. Slide groove; 26. Second V-shaped plate; 261. Pin shaft; 27. Return spring. Detailed Implementation

[0030] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the purpose of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. The present invention is disclosed for the purpose of describing the present invention and does not indicate or imply that the device or element referred to must have a specific orientation.

[0031] Example 1, in conjunction with Appendix Figure 1-3 A spacer bar installation auxiliary tool includes a pull rod 1, with a hook 2 at each end of the pull rod 1 capable of hooking and pulling the split wire; the pull rod 1 includes a tube 11, with an expanded neck section 111 at each end of the inner cavity of the tube 11 near both ends, specifically, the expanded neck section 111 is at a certain distance from the end face of the tube 11.

[0032] In one possible implementation, the expansion neck section 111 can be formed by: expanding the diameter of the end of the pipe fitting 11 using a pipe expansion device, and then setting an end plate at the outer end, so that the expansion neck section 111 is formed between the step surface of the expansion neck and the end plate.

[0033] A protective spring 12 is embedded in the outer section of the necked section 111, and a threaded sleeve 13 capable of moving along its axial direction is embedded in the inner section of the necked section 111. A convex-rib groove structure 14 is formed between the inner wall of the inner section of the necked section 111 and the body of the threaded sleeve 13. Specifically, both the inner wall of the inner section of the necked section 111 and the body of the threaded sleeve 13 are provided with multiple axial convex ribs evenly spaced along their respective circumferences. A groove is formed between two adjacent axial convex ribs to mate with the corresponding axial convex rib, thus forming the convex-rib groove structure 14. The outer end face of the threaded sleeve 13 abuts against the inner end face of the protective spring 12; that is, through the elastic compression of the threaded sleeve 13 by the protective spring 12, the threaded sleeve 13 is relatively stably positioned within the inner section of the necked section 111.

[0034] Each of the two threaded sleeves 13 is threadedly connected to a screw 15, and the outer end of the screw 15 extends out of the tube 11 and is connected to the corresponding hook 2;

[0035] Among them, the two threaded sleeves 13 have opposite thread directions.

[0036] Furthermore, to facilitate the rotation of the pipe fitting 11, a rotating handle 17 is provided in the middle of the pipe body of the pipe fitting 11.

[0037] In use, first, attach the two hooks 2 to the two split conductors respectively. Then, rotate the rotating handle 17 to drive the pipe 11 to rotate. Due to the action of the convex groove structure 14, the two threaded sleeves 13 rotate with the pipe 11. Since the hooks 2 cooperate with the split conductors, the hooks 2 and the screw 15 can be considered not to rotate. At this time, the screw 15 moves axially inward under the action of the rotation of the corresponding threaded sleeve 13. This pulls the hooks 2, causing the two split conductors to move closer to each other. It should be noted that during this process, due to the cooperation between the hooks 2 and the split conductors... As the force between the wires increases, the axial force on the threaded sleeve 13 also increases, compressing the corresponding protective spring 12 and causing it to move outward. When the force between the hook 2 and the split guide reaches a certain level, the convex groove structure 14 disengages. At this point, the rotation of the tube 11 can no longer drive the threaded sleeve 13 to rotate, so the screw 15 and the hook 2 no longer move. The force on the split conductor no longer increases, effectively preventing the split conductor from being subjected to excessive force, which could damage the position fixing the split conductor; for example, damage to the insulator, the connection between the split conductor and the insulator.

[0038] To reduce maintenance costs due to damage to the convex groove structure 14, a mating sleeve 16 is fixedly embedded in the inner section of the necked section 111. The inner wall of the mating sleeve 16 and the body of the threaded sleeve 13 have a mating convex groove structure 14 that cooperates with each other. That is, when the convex groove structure 14 is damaged, the mating sleeve 16 can be replaced instead of the pipe fitting 11, thereby reducing subsequent maintenance costs.

[0039] In one possible implementation, the hook 2 can be a hook from the prior art.

[0040] In one possible implementation, combined with the appendix Figure 6 The hook 2 can also be connected to the outer end of the corresponding screw 15 by including a U-shaped plate 21, one side wall of which is connected to the outer end of the corresponding screw 15.

[0041] Furthermore, one side wall of the U-shaped plate 21 is connected to the outer end of the corresponding screw 15 via the short side of the figure-eight plate 22, and the long side of the figure-eight plate 22 corresponds to the open end of the U-shaped plate 21; that is, when the long side of the figure-eight plate 22 is engaged with the split wire, the split wire is guided by the long side of the figure-eight plate 22 to slide into the inner side of the U-shaped plate 21.

[0042] As needed, to prevent the split wires from being scratched, a reel assembly 23 is provided on the inner side of the U-shaped plate 21. Specifically, the reel assembly 23 includes a reel frame and a reel body rotatably connected to the inner side of the reel frame.

[0043] Example 2, in conjunction with Appendix Figure 4-7 A spacer bar installation auxiliary tool, based on Embodiment 1, is designed to prevent the split wire from abruptly separating from the hook component 2 and causing a safety accident. The reel assembly 23's frame is axially slidably connected to the U-shaped plate 21, and a slow-rebound spring 24 is provided between the reel assembly 23's frame and the closed end of the U-shaped plate 21. Specifically, one end of the slow-rebound spring 24 is fixedly connected to the U-shaped plate 21, and the other end is fixedly connected to the reel assembly 23's frame. It should be noted that the slow-rebound spring 24 is prior art and will not be described in detail here. It is sufficient to understand that the slow-rebound spring 24 has a slow-rebound characteristic similar to an inert sponge.

[0044] The outer end of the side wall of the U-shaped plate 21 connecting screw 15 is rotatably connected to the tip of the first V-shaped plate 25, and the inner end of the other side wall of the U-shaped plate 21 is rotatably connected to the outer end of the side wall of the second V-shaped plate 26. The outer end of the other side wall of the second V-shaped plate 26 is movably connected to the side wall of the first V-shaped plate 25 along the length direction, so that when the second V-shaped plate 26 rotates, it drives the first V-shaped plate 25 to rotate and seal the opening end of the U-shaped plate 21.

[0045] Among them, a return spring 27 is provided on the outer side wall of the second V-shaped plate 26 near its rotation center.

[0046] Specifically, one side wall of the first V-shaped plate 25 is located outside the long side of the 7-shaped plate 22, and the other side wall of the first V-shaped plate 25 is located outside the side wall of the corresponding U-shaped plate 21. As needed, the long side of the 7-shaped plate 22 is provided with a groove to accommodate the corresponding first V-shaped plate 25.

[0047] Specifically, the side wall of the second V-shaped plate 26, corresponding to its center of rotation, is inclined within the cavity of the U-shaped plate 21, while its other side is located on the same side of the U-shaped plate 21 as the side wall of the first V-shaped plate 25. See the attached drawings for details. Figure 4-5 .

[0048] Furthermore, the sidewall of the first V-shaped plate 25 corresponding to the second V-shaped plate 26 is a U-shaped structure. Both sides of the U-shaped structure are provided with a sliding groove 251 along its length direction. The outer end of the sidewall of the second V-shaped plate 26 away from its rotation center is provided with a pin 261 that is movably fitted to the sliding groove 251.

[0049] In use, when the split wire is pulled, if the split wire suddenly moves away from the pulley assembly 23, due to the slow rebound of the slow return spring 24, the movement of the pulley assembly 23 towards the opening end of the U-shaped plate 21 will have a certain lag. At this time, the pulley frame of the pulley assembly 23 is still pressing the second V-shaped plate 26. Therefore, the position change of the second V-shaped plate 26 and the first V-shaped plate 25 also has a certain lag. At this time, one side wall of the first V-shaped plate 25 is still in the position of blocking the opening end of the U-shaped plate 21 and blocking the split wire. Therefore, it can effectively prevent the split wire from detaching from the hook 2 when it suddenly moves away from the pulley assembly 23.

[0050] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents within this invention.

Claims

1. A spacer bar installation auxiliary tool, comprising a pull rod (1), wherein each end of the pull rod (1) is provided with a hook (2) capable of hooking and pulling the split wire; characterized in that: The pull rod (1) includes a tube (11), and each of the inner cavities of the tube (11) is provided with a necked section (111) near both ends. A protective spring (12) is embedded in the outer section of the necked section (111), and a threaded sleeve (13) that can move along its axial direction is embedded in the inner section of the necked section (111). The inner wall of the inner section of the necked section (111) and the sleeve body of the threaded sleeve (13) have a mutually cooperating convex ridge and groove structure (14). The outer end face of the threaded sleeve (13) abuts against the inner end face of the protective spring (12). Each of the two threaded sleeves (13) is threadedly connected to a screw (15), and the outer end of the screw (15) extends out of the tube (11) and is connected to the corresponding hook (2). The threads of the two threaded sleeves (13) are turned in opposite directions. The hook component (2) includes a U-shaped plate (21), one side wall of which is connected to the outer end of the corresponding screw (15), and a spool assembly (23) is provided on the inner side of the U-shaped plate (21); the spool frame of the spool assembly (23) is slidably connected to the U-shaped plate (21) along the axial direction, and a slow rebound spring (24) is provided between the spool frame of the spool assembly (23) and the closed end of the U-shaped plate (21). The outer end of the side wall of the U-shaped plate (21) connected to the connecting screw (15) is rotatably connected to the tip of the first V-shaped plate (25). The inner end of the other side wall of the U-shaped plate (21) is rotatably connected to the outer end of the side wall of the second V-shaped plate (26). The outer end of the other side wall of the second V-shaped plate (26) is movably connected to the side wall of the first V-shaped plate (25) along the length direction, so that when the second V-shaped plate (26) rotates, it drives the first V-shaped plate (25) to rotate and seal the opening end of the U-shaped plate (21). A return spring (27) is provided on the outer side of the side wall of the second V-shaped plate (26) near its rotation center.

2. The spacer installation auxiliary tool according to claim 1, characterized in that: The inner section of the necked section (111) is fixedly embedded with a mating sleeve (16), and the inner wall of the mating sleeve (16) and the body of the threaded sleeve (13) have a mutually cooperating convex groove structure (14).

3. The spacer installation auxiliary tool according to claim 1, characterized in that: The pipe fitting (11) has a rotating handle (17) in the middle of the pipe body.

4. The spacer installation auxiliary tool according to claim 1, characterized in that: One side wall of the U-shaped plate (21) is connected to the outer end of the corresponding screw (15) via the short side of the figure-eight plate (22), and the long side of the figure-eight plate (22) corresponds to the open end of the U-shaped plate (21).

5. The spacer installation auxiliary tool according to claim 1, characterized in that: The side wall of the first V-shaped plate (25) corresponding to the second V-shaped plate (26) is a U-shaped structure. Both sides of the U-shaped structure are provided with a sliding groove (251) along its length direction. The outer end of the side wall of the second V-shaped plate (26) away from its rotation center is provided with a pin (261) that is movably fitted to the sliding groove (251).

Images