Spacer installation auxiliary tool

Abstract

The invention relates to the technical field of spacer installation, in particular to a spacer installation auxiliary tool which comprises a traction rod, and the two ends of the traction rod are each provided with a hook piece capable of hooking and pulling a split conductor. The traction rod comprises a pipe fitting, the positions, close to the two ends, of an inner cavity of the pipe fitting are each provided with a neck expanding section, a protection spring is embedded into the outer section of each neck expanding section, a threaded sleeve capable of moving in the axial direction of the neck expanding section is embedded into the inner section of each neck expanding section, and rib and groove structures matched with each other are arranged between the inner wall of the inner section of each neck expanding section and a sleeve body of the threaded sleeve. The outer end face of the threaded sleeve abuts against the inner end face of the protection spring. According to the invention, when the acting force between the hook member and the split guide reaches a certain value, the threaded sleeve extrudes the protection spring to move axially, so that the rib and groove structures are separated from each other, and the threaded sleeve does not rotate along with the rotation of the pipe fitting, so that the stress of the split conductor is not increased, and the split conductor can be effectively prevented from being too large in stress. And the position for fixing the split conductor is damaged.

Description

Technical Field

[0001] The invention relates to the technical field of spacer bar installation, and in particular to a spacer bar installation auxiliary tool. Background Art

[0002] Ultra-high voltage compact lines use double-split or multi-split conductor installation methods, which are generally installed on the split conductors through spacer bars to fix the spacing between each split conductor to prevent the conductors from whipping each other and suppress breeze vibration and sub-span oscillation.

[0003] For double-split conductors, the personnel who go down the conductors to install and replace the spacer bars mostly adopt the operation method of "sitting on one conductor and holding the other conductor with their hands"; for quad-split conductors, the personnel who go down the conductors to install and replace the spacer bars mostly adopt the operation method of "stepping on one or two conductors and holding 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] At present, the spacing between split conductors is about 400~450mm, and the spacing between spacer bars is about 50~60m. During operation, it was found that the operators concentrated their weight on one or two conductors by "sitting" or "stepping", resulting in a large distance between the load-bearing conductor and other conductors, making it difficult to gather the conductors when installing the spacer bars, which brought great inconvenience to the installation.

[0005] For this purpose, we have designed a spacer rod installation aid. Summary of the invention

[0006] In order to overcome the deficiencies in the background technology, the present invention discloses a spacer rod installation auxiliary tool.

[0007] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A spacer rod installation auxiliary tool, comprising a pulling rod, each end of which is provided with a hook member capable of hooking and pulling a split conductor; the pulling rod comprises a pipe fitting, an inner cavity of the pipe fitting is provided with an expanded neck section near the two ends, the outer section of the expanded neck section is embedded with a protective spring, the inner section of the expanded neck section is embedded with a threaded sleeve capable of moving along its axial direction, and the inner wall of the inner section of the expanded neck section and the sleeve body of the threaded sleeve have a mutually matching ridge groove structure, and the outer end surface of the threaded sleeve is in abutment with the inner end surface of the protective spring; each of the two threaded sleeves is threadedly connected with a screw rod, and the outer end of the screw rod extends out of the pipe fitting and is connected to the corresponding hook member; The two threaded sleeves have opposite thread rotation directions.

[0008] Preferably, a matching sleeve is fixedly embedded in the inner section of the expanded neck section, and the inner wall of the matching sleeve and the threaded sleeve body have the convex ridge and groove structure that match each other.

[0009] Preferably, a rotating handle is provided in the middle of the pipe body.

[0010] Preferably, the hook member comprises a U-shaped plate, and a side wall of the U-shaped plate is connected to the outer end of the corresponding screw rod.

[0011] Preferably, one side wall of the U-shaped plate is connected to the corresponding outer end of the screw through the short side of the 7-shaped plate, and the long side of the 7-shaped plate corresponds to the open end of the U-shaped plate.

[0012] Preferably, a wire wheel assembly is provided on the inner side of the U-shaped plate.

[0013] Preferably, the wheel frame of the wire wheel assembly is axially slidably connected to the U-shaped plate, and a slow rebound spring is provided between the wheel frame of the wire wheel assembly and the closed end of the U-shaped plate.

[0014] 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 side wall on the other side of the U-shaped plate is rotatably connected to the outer end of one side wall of the second V-shaped plate, and the outer end wall of the other side wall of the second V-shaped plate is movably connected to one side wall of the first V-shaped plate along the length direction, so that when the second V-shaped plate rotates, the first V-shaped plate is driven to rotate to block the open end of the U-shaped plate; Wherein, a return spring is provided on the outer side of a side wall of the second V-shaped plate close to its rotation center.

[0015] Preferably, the side wall 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 sliding grooves along its length direction, and the outer end of the side wall of the second V-shaped plate away from its rotation center is provided with a pin shaft that movably fits in the sliding groove.

[0016] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects: 1. When the force between the hook and the split guide reaches a certain level, the threaded sleeve squeezes the protective spring to move axially, so that the ridge and groove structure is out of cooperation, and then the threaded sleeve no longer rotates with the rotation of the pipe fitting, so that the force on the split wire no longer increases, which can effectively prevent the split wire from being subjected to excessive force, resulting in damage to the position of the fixed split wire; 2. The structure of the slow rebound spring and the V-shaped plate can be combined to effectively prevent the split wire from detaching from the hook when it moves abruptly, thereby ensuring the safety of the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A partial cross-sectional view of the pull rod of the present invention; Figure 3 It is a partial cross-sectional view of the pulling rod in another state of the present invention; Figure 4 It is a structural schematic diagram of the hook member in the present invention; Figure 5It is a schematic diagram of the structure of the hook member in the present invention in one state; Figure 6 It is a schematic diagram of assembling the U-shaped plate, the 7-shaped plate, the wire wheel assembly and the slow rebound spring in the present invention; Figure 7 It is a schematic diagram of assembling the first V-shaped plate and the second V-shaped plate in the present invention.

[0018] In the figure: 1. pulling rod; 11. pipe fitting; 111. expanded neck section; 12. protective spring; 13. threaded sleeve; 14. convex ridge and groove structure; 15. screw rod; 16. matching sleeve; 17. rotating handle; 2. hook member; 21. U-shaped plate; 22. 7-shaped plate; 23. reel assembly; 24. slow rebound spring; 25. first V-shaped plate; 251. slide groove; 26. second V-shaped plate; 261. pin; 27. reset spring. DETAILED DESCRIPTION

[0019] The present invention can 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 there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end portion", "lateral", "lateral", "transverse", "longitudinal", etc. indicating directions or positional relationships, they only correspond to the length and width of the corresponding components, that is, the "end portion" indicates the head and tail areas in the length direction of the corresponding component, and the "side portion" indicates the head and tail areas in the width direction of the corresponding component; this is for the convenience of describing the present invention and is not to indicate or imply that the device or element referred to must have a specific direction.

[0020] Embodiment 1, in combination with the attached Figure 1-3 A spacer rod installation auxiliary tool includes a pulling rod 1, each end of which is provided with a hook member 2 capable of hooking and pulling a split conductor; the pulling rod 1 includes a pipe 11, and an expansion neck section 111 is respectively provided near the two ends of the inner cavity of the pipe 11. Specifically, the expansion neck section 111 is at a certain distance from the end surface of the pipe 11.

[0021] In a possible implementation, the expanded neck section 111 may be formed by expanding the end of the pipe 11 using a pipe expansion device, and then providing an end plate at the outer end to form the expanded neck step surface and the end plate.

[0022] The outer section of the expanded neck section 111 is embedded with a protective spring 12, and the inner section of the expanded neck section 111 is embedded with a threaded sleeve 13 that can move along its axial direction, and there is a mutually matching ridge groove structure 14 between the inner wall of the inner section of the expanded neck section 111 and the sleeve body of the threaded sleeve 13. Specifically, the inner wall of the inner section of the expanded neck section 111 and the sleeve body of the threaded sleeve 13 are both evenly spaced along their respective circumferential directions. A groove that matches the corresponding axial ridge is formed between two adjacent axial ridges, thereby forming a ridge groove structure 14. The outer end face of the threaded sleeve 13 is in contact with the inner end face of the protective spring 12; that is, through the elastic squeezing effect of the protective spring 12 on the threaded sleeve 13, the threaded sleeve 13 is relatively stably located in the position of the inner section of the expanded neck section 111.

[0023] The two threaded sleeves 13 are each threadedly connected to a screw rod 15, and the outer end of the screw rod 15 extends out of the pipe fitting 11 and is connected to the corresponding hook member 2; The two threaded sleeves 13 have opposite thread rotation directions.

[0024] Furthermore, in order to facilitate the rotation of the pipe fitting 11 , a rotation handle 17 is provided in the middle of the pipe fitting 11 .

[0025] When in use, firstly, the two hook members 2 are respectively hooked to the two split conductors, and then the rotating handle 17 is rotated to drive the pipe 11 to rotate. Due to the effect of the ridge groove structure 14, the two threaded sleeves 13 rotate with the pipe 11. Since the hook member 2 cooperates with the split conductor, the hook member 2 and the screw 15 can be regarded as not rotating. At this time, the screw 15 moves axially inward under the action of the rotation of the corresponding threaded sleeve 13. At this time, the hook member 2 is pulled, so that the two split conductors move in a direction close to each other. It should be noted that: in this process, since the hook member 2 and the split conductor The acting force between the wires becomes greater and greater, and the axial force on the threaded sleeve 13 becomes greater and greater, thereby compressing the corresponding protective spring 12 to move outward until the acting force between the hook member 2 and the split guide reaches a certain level, and the ridge and groove structure 14 disengages. At this time, the rotation of the pipe fitting 11 can no longer drive the threaded sleeve 13 to rotate, so the screw 15 and the hook member 2 no longer move. At this time, the force on the split conductor no longer increases, which can effectively prevent the split conductor from being subjected to a large force, resulting in damage to the position where the split conductor is fixed; for example, the insulator and the connector between the split conductor and the insulator are damaged.

[0026] In order to reduce the maintenance cost caused by damage to the rib and groove structure 14, a matching sleeve 16 is fixedly embedded in the inner section of the expanded neck section 111, and a matching rib and groove structure 14 is provided between the inner wall of the matching sleeve 16 and the body of the threaded sleeve 13; that is, when the rib and groove structure 14 is damaged, the matching sleeve 16 can be replaced instead of the pipe fitting 11, thereby reducing the subsequent maintenance cost.

[0027] In a possible implementation, the hook member 2 may be a hook in the prior art.

[0028] In a possible implementation, Figure 6 The hook member 2 may also include a U-shaped plate 21, and a side wall of the U-shaped plate 21 is connected to the outer end of the corresponding screw rod 15; Furthermore, one side wall of the U-shaped plate 21 is connected to the corresponding outer end of the screw 15 through the short side of the 7-shaped plate 22, and the long side of the 7-shaped plate 22 corresponds to the open end of the U-shaped plate 21; that is, when the long side of the 7-shaped plate 22 cooperates with the split wire, the split wire is guided by the long side of the 7-shaped plate 22 to be drawn into the inner side of the U-shaped plate 21.

[0029] According to the needs, in order to prevent the split wire from being scratched, a wire wheel assembly 23 is provided inside the U-shaped plate 21. Specifically, the wire wheel assembly 23 includes a wheel frame and a wheel body rotatably connected to the inside of the wheel frame.

[0030] Embodiment 2, combined with the attached Figure 4-7 , a spacer rod installation auxiliary tool, based on the first embodiment, is used to prevent the split wire from abruptly separating from the hook member 2 and causing a safety accident. The wheel frame of the wire wheel assembly 23 is axially slidably connected to the U-shaped plate 21, and a slow rebound spring 24 is provided between the wheel frame of the wire wheel assembly 23 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 wheel frame of the wire wheel assembly 23. It should be noted that the slow rebound spring 24 is a prior art and is not described in detail here. It is only necessary to know that the slow rebound spring 24 has a slow rebound characteristic similar to that of an inert sponge.

[0031] The outer end of the side wall of the U-shaped plate 21 connecting the screw rod 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 one side wall of the second V-shaped plate 26, and the outer end wall of the other side wall of the second V-shaped plate 26 is movably connected to the one 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 block the open end of the U-shaped plate 21; A return spring 27 is provided on the outer side of a side wall of the second V-shaped plate 26 close to the rotation center thereof.

[0032] 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 corresponding side wall of the U-shaped plate 21. As needed, the long side of the 7-shaped plate 22 is provided with a groove for accommodating the corresponding first V-shaped plate 25.

[0033] Specifically, the side wall of the second V-shaped plate 26 corresponding to the rotation center is inclined and located in the inner cavity of the U-shaped plate 21, and the 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. Figure 4-5 .

[0034] Furthermore, the side wall of the first V-shaped plate 25 corresponding to the second V-shaped plate 26 is a U-shaped structure, and both sides of the U-shaped structure are provided with a slide 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 shaft 261 that movably fits in the slide groove 251.

[0035] During use, when pulling the split wire, when the split wire moves abruptly away from the line wheel assembly 23, due to the slow rebound characteristic of the slow rebound spring 24, there will be a certain hysteresis in the movement of the line wheel assembly 23 toward the open end of the U-shaped plate 21. At this time, the wheel frame of the line wheel assembly 23 still squeezes the second V-shaped plate 26, so there is a certain hysteresis in the position change of the second V-shaped plate 26 and the first V-shaped plate 25. At this time, one side wall of the first V-shaped plate 25 is still in a position to block the open end of the U-shaped plate 21 and block the split wire. Therefore, it can effectively prevent the split wire from detaching from the hook member 2 when it suddenly moves away from the line wheel assembly 23.

[0036] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A spacer rod installation auxiliary tool, comprising a pulling rod (1), wherein each end of the pulling rod (1) is provided with a hook member (2) capable of hooking and pulling a split conductor; the characteristics are: The pulling rod (1) comprises a pipe fitting (11), wherein an expanded neck section (111) is provided at a position near the two ends of the inner cavity of the pipe fitting (11), a protective spring (12) is embedded in the outer section of the expanded neck section (111), a threaded sleeve (13) capable of moving along its axial direction is embedded in the inner section of the expanded neck section (111), and a convex ridge groove structure (14) that cooperates with each other is provided between the inner wall of the inner section of the expanded neck section (111) and the sleeve body of the threaded sleeve (13), and the outer end surface of the threaded sleeve (13) is in abutment with the inner end surface of the protective spring (12); each of the two threaded sleeves (13) is threadedly connected to a screw rod (15), and the outer end of the screw rod (15) extends out of the pipe fitting (11) and is connected to a corresponding hook member (2); The two threaded sleeves (13) have opposite thread rotation directions.

2. The spacer rod installation auxiliary tool according to claim 1, characterized in that: A matching sleeve (16) is fixedly embedded in the inner section of the expanded neck section (111), and mutually matching ridge and groove structures (14) are provided between the inner wall of the matching sleeve (16) and the sleeve body of the threaded sleeve (13).

3. The spacer rod installation auxiliary tool according to claim 1, characterized in that: A rotating handle (17) is provided in the middle of the tube body of the tube (11).

4. The spacer rod installation auxiliary tool according to claim 1, characterized in that: The hook member (2) comprises a U-shaped plate (21), and a side wall of the U-shaped plate (21) is connected to the outer end of the corresponding screw rod (15).

5. The spacer rod installation auxiliary tool according to claim 4, characterized in that: One side wall of the U-shaped plate (21) is connected to the outer end of the corresponding screw rod (15) through the short side of the 7-shaped plate (22), and the long side of the 7-shaped plate (22) corresponds to the open end of the U-shaped plate (21).

6. The spacer rod installation auxiliary tool according to claim 4, characterized in that: A wire wheel assembly (23) is provided inside the U-shaped plate (21).

7. The spacer rod installation auxiliary tool according to claim 6, characterized in that: The wheel frame of the wire wheel assembly (23) is axially slidably connected to the U-shaped plate (21), and a slow rebound spring (24) is provided between the wheel frame of the wire wheel assembly (23) and the closed end of the U-shaped plate (21).

8. The spacer rod installation auxiliary tool according to claim 7, characterized in that: 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), the inner end of the other side wall of the U-shaped plate (21) is rotatably connected to the outer end of one side wall of the second V-shaped plate (26), and the outer end wall of the other side wall of the second V-shaped plate (26) is movably connected to the one side wall of the first V-shaped plate (25) along the length direction, so that when the second V-shaped plate (26) rotates, the first V-shaped plate (25) is driven to rotate to block the open end of the U-shaped plate (21); A return spring (27) is provided on the outer side of a side wall of the second V-shaped plate (26) close to its rotation center.

9. The spacer rod installation auxiliary tool according to claim 8, 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, and both sides of the U-shaped structure are provided with a slide groove (251) along its length direction, and the outer end of the side wall of the second V-shaped plate (26) away from its rotation center is provided with a pin shaft (261) movably engaged with the slide groove (251).

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