Wire tightening tool for assisting in replacing spacer

Abstract

The invention discloses a wire tightening tool for assisting in replacing a spacer, which comprises an upper wire tightener and a lower wire tightener which are symmetrically arranged up and down, and the upper wire tightener and the lower wire tightener are connected through a height adjusting device; the upper wire tightener comprises two wire tightening fixing rods with the lower ends connected, an adjusting fixing rod is connected between the upper ends of the two wire tightening fixing rods, the two wire tightening fixing rods and the adjusting fixing rod are connected to form a triangular structure, the adjusting fixing rod is provided with a telescopic structure, and the telescopic structure adjusts the distance between the upper ends of the two wire tightening fixing rods by extending or shortening. The connecting ends of the two wire tightening fixing rods, and the wire tightening fixing rods and the adjusting fixing rod are connected in a hinged mode. A wire lock catch is arranged at the free end of the wire tightening fixing rod. The device can tighten the four-bundle sub-conductor, solves the problem that the sub-conductor is scattered far away and cannot be recovered after the spacer is taken down, improves the success rate of mounting the spacer by a high-altitude maintainer, is suitable for assisting the replacement of spacers of various types of conductors, and remarkably improves the working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of power line maintenance tools, in particular to a line tightening tool for assisting in replacing spacer bars. Background Art

[0002] 500kV ultra-high voltage AC transmission lines have the characteristics of large line spans. In order to suppress whipping and dancing of conductors caused by sub-span vibration and breeze vibration, spacers need to be installed on the four-split conductors. At present, in order to prevent the sub-conductors from spreading far away and unable to recover after the spacers are removed, ropes are generally used for multiple windings, or the construction workers rely on their bodies to gather the wires. Due to the different split spacings of different types of conductors, rope winding requires different lengths of ropes to be selected according to the sub-conductor spacing. Relying on the construction workers' bodies to gather the wires requires a lot of physical energy, which is not safe and easily leads to failure of spacer installation. When the sub-conductors cannot be gathered and fixed, the operation time will increase. Operators working at high altitudes for a long time are prone to physical exhaustion or heat stroke. There is a great risk to personal safety, which directly affects the line downtime and significantly increases the risk to the power grid.

[0003] In view of this, this application is hereby filed. Summary of the invention

[0004] The technical problem to be solved by the present invention is that in order to prevent the sub-conductors from spreading out for a long distance and being unable to be restored during the replacement of the spacer bars, ropes are usually wound multiple times, but only the spacer bars of a single type of conductor can be replaced, or the sub-conductors are gathered by relying on the bodies of the construction workers, which poses a great safety risk and is inefficient. The present invention aims to provide a tightening tool for assisting in the replacement of the spacer bars, which can tighten the four-split sub-conductors, solves the problem that the sub-conductors spread out for a long distance and cannot be restored after the spacer bars are removed, improves the success rate of the installation of the spacer bars by high-altitude maintenance personnel, and is suitable for assisting in the replacement of the spacer bars of various types of conductors, thereby significantly improving the work efficiency.

[0005] The present invention is achieved through the following technical solutions:

[0006] A tightening tool for assisting in replacing a spacer rod, comprising an upper tightening device and a lower tightening device, wherein the upper tightening device and the lower tightening device have the same structure and are symmetrically arranged up and down, and the upper tightening device and the lower tightening device are connected via a height adjustment device;

[0007] The wire tightening device comprises two wire tightening fixing rods connected at the lower ends, an adjusting fixing rod is connected between the upper ends of the two wire tightening fixing rods, the two wire tightening fixing rods and the adjusting fixing rod are connected to form a triangular structure, the adjusting fixing rod has a telescopic structure, the telescopic structure adjusts the distance between the upper ends of the two wire tightening fixing rods by extending or shortening, the connecting ends of the two wire tightening fixing rods, the wire tightening fixing rods and the adjusting fixing rods are all connected in a hinged manner; a wire lock is provided on the free end of the wire tightening fixing rod.

[0008] The wire tightening tool of the present invention comprises an upper wire tightening device and a lower wire tightening device, and the upper wire tightening device and the lower wire tightening device are respectively used to fix the upper two wires and the lower two wires of the four-split wire. The upper wire tightening device and the lower wire tightening device are both provided with two wire tightening fixing rods, and an adjusting fixing rod is connected between the ends of the two wire tightening fixing rods. The adjusting fixing rod has a telescopic structure, and the angle between the two wire tightening fixing rods and the spacing between the two wire locking buckles can be adjusted by adjusting the length of the adjusting fixing rod, so as to adapt to different types of four-split wires. In addition, the two upper wire tightening devices and the lower wire tightening devices are connected by a height adjustment device. When the spacing between the two wire locking buckles of the upper wire tightening device and the spacing between the two wire locking buckles of the lower wire tightening device are adjusted by the adjusting fixing rod, the four wire locking buckles can be hung on the four sub-wires respectively, and then the spacing between the upper and lower wire tightening devices is tightened by the height adjustment device, so that the entire wire tightening tool is in a tensioned state to ensure the relative position between the four sub-wires.

[0009] After the wire tightening tool tightens the four sub-conductors, the wire locks at the four corners are respectively subjected to the pulling force of the sub-conductors toward the outside, and a tensioning effect is played in the middle by adjusting the fixing rod. At the same time, adjusting the fixing rod also plays a role in limiting the displacement of the wire locks, so that the force of the two wire tightening fixing rods can be evenly concentrated to the center position of the wire tightening tool, and relative displacement between the two wire locks in the upper tensioner or the lower tensioner under the action of high-altitude wind can be avoided, thereby improving the overall fixing stability of the wire tightening tool to the conductor.

[0010] In a specific embodiment, the ends of the two tightening wire fixing rods are connected to the fixing blocks, and the ends of the tightening wire fixing rods are hinged to the fixing blocks. By providing the fixing blocks, the stability of the ends of the tightening wire fixing rods is further enhanced.

[0011] In a specific embodiment, the wire lock includes a semicircular ring plate with an opening facing upward, and pressing plates are vertically arranged on the inner sides of both ends of the opening of the semicircular ring plate, the end of the pressing plate is hinged to the semicircular ring plate, and the other end of the pressing plate is connected to the sealing plate, and the lower ends of the two sealing plates are in contact to form a V-shaped structure facing the inner side of the semicircular ring plate, and the lower ends of the two sealing plates are connected to fastening plates inclined toward both sides, and the ends of the fastening plates are hinged to the ends of the sealing plates;

[0012] By applying downward force to the pressing plate, the lower ends of the two sealing plates are separated to allow the wire to enter. After the wire enters, the two sealing plates are closed, and the two fastening plates are attached to the outer wall of the wire.

[0013] The present invention can prevent the wire from being unhooked and ensure the fixation between the wire lock and the wire by providing a wire lock with a closed and fixed structure, so as to prevent the wire from moving back and forth and scratching the inner wall of the hook. When the wire lock of the present invention is used, first press the two pressing plates downward so that the two sealing plates forming a V-shaped closed structure are separated to both sides, and the wire is hung into the cavity at the bottom of the semicircular ring plate, and the force applied to the pressing plate is withdrawn. The two sealing plates return to their original positions to close the top opening of the semicircular ring plate, and at the same time, the two fastening plates follow the sealing plates to move to be tangent to the outer wall of the wire, so as to form a triangular clamping relationship between the two fastening plates and the semicircular ring plate to ensure the fixation of the wire; since the end of the fastening plate and the end of the sealing plate are hinged structures, the fastening plates can play a good fixing role for wires of different sizes within a certain range.

[0014] In a specific embodiment, the wire lock includes a V-shaped card plate with a V-shaped structure, and lower pressure plates are provided on the inner sides of both ends of the V-shaped card plate. The end of the lower pressure plate is hinged to the V-shaped card plate, and the other end of the lower pressure plate is connected to the baffle plate. The lower ends of the two baffle plates are in contact to form a V-shaped structure facing the inner side of the V-shaped card plate. An elastic plate with an inverted V-shaped structure is provided below the baffle plate, and the lower end of the elastic plate is connected to the V-shaped card plate, and the upper end of the elastic plate is in contact with the lower end of the baffle plate but not connected.

[0015] The present invention also provides another structure of the wire lock. When in use, first press down the two lower pressing plates so that the two baffles forming the V-shaped closed structure are separated toward both sides, and the wire is hung into the cavity of the V-shaped card plate. Then continue to press down the wire to deform the elastic plate, and the wire "sinks" downward into the elastic plate. At this time, the baffle returns to its original position to close the top opening of the V-shaped card plate, and the wire is embedded in the trapezoidal space surrounded by the V-shaped card plate, the baffle and the elastic plate. Through the setting of this structure, the wire can be completely prevented from slipping out of the lock from the inside. At the same time, the present application divides the triangular space into two spaces by the elastic plate. The movable space after the wire is inserted is small, which can be more matched with the size of the wire, and the relative movement between the wire and the lock is avoided. On the other hand, the wire of the present application is inserted into the space on one side of the elastic plate. When the tool is tightened, the wire lock forms an eccentric force structure, which can ensure that the lock will not rotate relative to the wire in the tightened state.

[0016] In a specific embodiment, the height adjustment device includes a transmission gear and a transmission chain, one end of the transmission chain is connected to the lower tensioner, and the other end is wound around the transmission gear. The transmission chain is tightened or loosened by rotating the transmission gear to adjust the distance between the upper tensioner and the lower tensioner.

[0017] The present invention adopts transmission gears and transmission chains to tighten the upper and lower tensioners in the height direction. The transmission gears and transmission chains serve as flexible transmission structures, which can facilitate the upper and lower tensioners to be installed on the wires separately in a relatively ample space, thereby avoiding the upper and lower tensioners from influencing each other during the installation process. That is, when the transmission chain is in a relaxed state, the upper tensioner will not be affected by the weight of the lower tensioner when it is installed. The two are independent of each other. Only when the transmission chain is tightened to make it in a taut state, a mutual force will be generated between the upper and lower tensioners.

[0018] Since the height adjustment device of the present invention adopts a soft transmission chain, in order to ensure the verticality between the upper tensioner and the lower tensioner during installation, so as to ensure that the wire feeding tool as a whole is in the vertical plane, a vertical ball is installed on the free end of the transmission chain. When installing the tensioning tool, under the action of the gravity of the vertical ball, the free part of the transmission chain can maintain a vertical state. By comparing the parallelism between the load-bearing part and the free part of the transmission chain, it can be determined whether the upper tensioner and the lower tensioner are aligned up and down, so as to make timely adjustments.

[0019] In a specific embodiment, the interior of the tensioning and fixing rod is a hollow structure, and a connecting chain is sleeved inside the tensioning and fixing rod. One end of the connecting chain extends out of the upper end of the tensioning and fixing rod to connect to the wire lock buckle, and the other end extends out of the lower end of the tensioning and fixing rod to connect to the height adjustment device.

[0020] Since the wire tightening and fixing rod is a rigid connection structure, when the wire is hung, the wire locks at the left and right ends of the wire tightening device are linked, that is, when one wire lock is installed and then another wire lock is installed, the wire tightening device needs to move as a whole, which will easily pull the wire on which the wire lock is already installed; therefore, the present application sets a "soft" connection chain inside the wire tightening and fixing rod, and the respective actions of the wire locks at both ends of the wire tightening device are independent of each other and will not affect each other. After all the wire locks are hung, during the tightening of the transmission chain, since the spacing angle between the wire tightening and fixing rods has been adjusted in advance according to the spacing between the wires, during the tightening of the transmission chain, the wire tightening and fixing rod continuously slides upward on the connection chain according to a preset angle until the upper end of the wire tightening and fixing rod contacts the wire lock, completing the tightening of the entire tool. The wire tightening and fixing rod with a rigid connection structure ensures the limitation of the connection chain during the tightening process and controls its freedom of movement, thereby improving the stability of the overall structure and preventing the wire from swinging back and forth with the tool during the tightening process.

[0021] In a specific embodiment, a clearance hole opened along the circumferential direction is provided on the semicircular ring plate at the end portion opposite to the fastening plate, and the clearance hole is used to allow the end portion of the fastening plate to extend when the pressing plate is pressed downward. The present invention provides a clearance hole so that the fastening plate has enough space to make way when the wire is hung in the semicircular ring plate, thereby ensuring that the sealing plate can be opened normally.

[0022] In a specific embodiment, the upper end of the fastening plate and the lower end of the sealing plate, and the end of the pressing plate and the semicircular ring plate are hinged by a reset spring. The present invention provides a reset spring, and when the size of the wire is large, the angle between the two fastening plates can be increased while ensuring that the sealing plate is normally fitted and closed, and then the fastening plate can tightly clamp the wire under the action of the reset spring.

[0023] In a specific embodiment, the fastening plate is made of rubber material or the outer wall of the fastening plate is coated with a soft silicone layer, that is, the fastening plate is in soft contact with the wire to avoid damage to the outer wall of the wire.

[0024] In a specific embodiment, the telescopic structure of the adjusting and fixing rod comprises a hollow adjusting cylinder, a driving bevel gear whose axis is perpendicular to the hollow adjusting cylinder is arranged in the hollow adjusting cylinder, driven bevel gears whose axis is parallel to the hollow adjusting cylinder are respectively meshed on both sides of the driving bevel gear, a threaded rod is coaxially connected to the driven bevel gear, and a telescopic sleeve is threadedly connected to the outside of the threaded rod, the telescopic sleeve can make horizontal linear motion along the inner wall of the hollow adjusting cylinder, and the end of the telescopic sleeve is hinged to the lower end of the tightening and fixing rod;

[0025] The driven bevel gear is driven to rotate by rotating the driving bevel gear, and the driven bevel gear drives the threaded rod to rotate together, thereby driving the telescopic sleeve to move toward the outside or inside of the hollow adjustment cylinder, thereby adjusting the distance and height between the lower ends of the two tightening fixing rods.

[0026] The present invention can realize the simultaneous extension and retraction of telescopic sleeves on both sides of the hollow adjustment cylinder by arranging a bevel gear meshing structure, thereby realizing the adjustment of the length of the fixed rod.

[0027] In a specific embodiment, the wire lock opening of the upper tensioner faces downward, that is, the wire lock opening of the lower tensioner faces upward. In this way, during the process of tightening the wire, the part of the wire lock that is subjected to the external pulling force of the wire is a semicircular ring plate, which can improve the locking effect of the wire lock on the wire and prevent the wire from escaping from the lock.

[0028] In a specific embodiment, both ends of the opening of the wire lock buckle are connected to the end of the wire tightening and fixing rod through chains, and one of the chains is detachably connected to the end of the wire tightening and fixing rod.

[0029] The present invention connects the wire lock buckle by a chain, so that the wire lock buckle can rotate freely relative to the wire tightening and fixing rod, thereby facilitating the wire lock buckle to be hung on the wire. In addition, the two ends of the wire lock buckle are installed on the end of the wire tightening and fixing rod through a chain, that is, when the wire lock buckle is in a working state, the force received by the wire is not horizontal or vertical, but inclined. Therefore, during the force-bearing process, it is easy for the fastening plate and the sealing plate to be stressed so that the wire lock buckle opening is opened and falls off from the wire. The two chains are arranged so that the orientation can be adjusted at any time under the action of the wire tension so that the stressed part is always kept on the semicircular ring plate, thereby preventing the wire lock buckle from falling off the wire and ensuring the balance of the wire lock buckle. The present invention utilizes a "flexible" chain to improve the freedom of the wire lock buckle, and utilizes a "rigid" wire tightening and fixing rod to ensure the relative position between the two wire lock buckles. Through the combination of rigidity and flexibility, not only the stability of the wire tightening is guaranteed, but also the connectivity between the wire tightening tool and the wire is guaranteed.

[0030] In a specific embodiment, a driving shaft is coaxially connected to the driving bevel gear, and the length of the fixed rod can be extended or shortened by rotating the driving shaft.

[0031] In a specific embodiment, an operating handle is installed on the transmission gear, and the drive shaft can also be connected to the transmission gear through a synchronous chain. In this way, during the overall tightening of the tensioning device, the four wire locks can be tightened up and down and left and right at the same time by rotating the operating handle, which is more convenient to operate.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] 1. A tightening tool for assisting in replacing a spacer provided in an embodiment of the present invention can tighten four-split sub-conductors, thereby solving the problem that the sub-conductors are spread out for a long distance and cannot be restored after the spacer is removed, thereby improving the success rate of high-altitude maintenance personnel in installing the spacer, and is also suitable for assisting in replacing spacers of various types of conductors, thereby significantly improving work efficiency;

[0034] 2. A tightening tool for assisting in replacing a spacer rod provided in an embodiment of the present invention, wherein both the upper tightening tool and the lower tightening tool are provided with two tightening fixing rods, and an adjusting fixing rod is connected between the ends of the two tightening fixing rods, and the adjusting fixing rod has a telescopic structure, and by adjusting the length of the adjusting fixing rod, the angle between the two tightening fixing rods and the spacing between the two wire lock buckles can be adjusted, thereby adapting to four-split wires of different models;

[0035] 3. A tightening tool for assisting in replacing spacer bars provided in an embodiment of the present invention, after the tightening tool tightens four sub-conductors, the wire lock buckles at the four corners are respectively subjected to the pulling force of the sub-conductors toward the outside, and a tensioning effect is played in the middle by adjusting the fixing rod. At the same time, adjusting the fixing rod also plays a role in limiting the displacement of the wire lock buckle, so that the force of the two tightening fixing rods can be evenly concentrated to the center position of the tightening tool, and relative displacement between the two wire lock buckles in the upper tightening device or the lower tightening device under the action of high-altitude wind force can be avoided, thereby improving the fixing stability of the tightening tool to the entire conductor;

[0036] 4. A tightening tool for assisting in replacing a spacer rod provided in an embodiment of the present invention uses a transmission gear and a transmission chain to tighten the upper and lower tightening devices in the height direction. The transmission gear and the transmission chain serve as a flexible transmission structure, which can facilitate the upper and lower tightening devices to be installed on the conductor separately in a relatively ample space, thereby avoiding the upper and lower tightening devices from affecting each other during the installation process;

[0037] 5. A wire tightening tool for assisting in replacing a spacer rod provided in an embodiment of the present invention forms a triangular clamping relationship between the two fastening plates and the semicircular ring plate to ensure the fixation of the wire and prevent the wire from being unhooked. Since the end of the fastening plate and the end of the sealing plate are hinged, the fastening plate can play a good fixing role for wires of different sizes within a certain range.

[0038] 5. A tightening tool for assisting in replacing a spacer rod provided in an embodiment of the present invention can simultaneously extend and retract telescopic sleeves on both sides of a hollow adjustment cylinder by providing a bevel gear meshing structure, thereby adjusting the length of the fixed rod;

[0039] 6. An embodiment of the present invention provides a wire tightening tool for assisting in replacing spacer rods. The wire lock is connected to the wire lock by a chain, so that the wire lock can rotate freely relative to the wire tightening fixing rod, thereby facilitating the wire lock to be hung on the wire. In addition, the two ends of the wire lock are installed on the end of the wire tightening fixing rod through a chain. The two chains are set so that the orientation can be adjusted at any time under the action of the wire tension so that the force-bearing part always remains on the semicircular ring plate, thereby preventing the wire lock from falling off the wire and ensuring the balance of the wire lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the structure of a wire tightening tool provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the tightening process of the wire tightening tool structure provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of a wire lock structure provided by an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of the structure of a semicircular ring plate provided in an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of another wire lock structure provided by an embodiment of the invention;

[0046] Figure 6 A schematic diagram of the structure of the adjusting and fixing rod provided in an embodiment of the present invention;

[0047] Figure 7 A schematic diagram of the working state structure of a wire tightening tool provided in an embodiment of the present invention;

[0048] Figure 8 A schematic diagram of the working state structure of a wire tightening tool provided in an embodiment of the present invention.

[0049] Reference numerals and corresponding parts names:

[0050] 1-upper tensioner, 2-lower tensioner, 3-height adjustment device, 4-transmission gear, 5-transmission chain, 6-tensioner fixing rod, 7-adjustment fixing rod, 8-wire lock buckle, 9-semicircular ring plate, 10-pressing plate, 11-sealing plate, 12-fastening plate, 13-allowing through hole, 14-hollow adjustment cylinder, 15-driving bevel gear, 16-driven bevel gear, 17-threaded rod, 18-telescopic sleeve, 19-driving shaft, 20-lock chain, 21-lower pressure plate, 22-baffle, 23-elastic plate, 24-connecting chain. DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0052] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures are not specifically described.

[0053] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0055] Example 1

[0056] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides a tightening tool for assisting in replacing a spacer rod, comprising an upper tightening device 1 and a lower tightening device 2, wherein the upper tightening device 1 and the lower tightening device 2 have the same structure and are symmetrically arranged up and down, and the upper tightening device 1 and the lower tightening device 2 are connected via a height adjustment device 3;

[0057] The tensioner 1 includes two tensioning fixing rods 6 connected at the lower ends, an adjusting fixing rod 7 is connected between the upper ends of the two tensioning fixing rods 6, the two tensioning fixing rods 6 and the adjusting fixing rod 7 are connected to form a triangular structure, the adjusting fixing rod 7 has a telescopic structure, the telescopic structure adjusts the distance between the upper ends of the two tensioning fixing rods 6 by extending or shortening, the connecting ends of the two tensioning fixing rods 6 and the tensioning fixing rods 6 and the adjusting fixing rods 7 are all connected in a hinged manner; a wire lock buckle 8 is provided on the free end of the tensioning fixing rod 6.

[0058] The wire tightening tool of the present invention comprises an upper wire tightening device and a lower wire tightening device, and the upper wire tightening device and the lower wire tightening device are respectively used to fix the upper two wires and the lower two wires of the four-split wire. The upper wire tightening device and the lower wire tightening device are both provided with two wire tightening fixing rods, and an adjusting fixing rod is connected between the ends of the two wire tightening fixing rods. The adjusting fixing rod has a telescopic structure, and the angle between the two wire tightening fixing rods and the spacing between the two wire locking buckles can be adjusted by adjusting the length of the adjusting fixing rod, so as to adapt to different types of four-split wires. In addition, the two upper wire tightening devices and the lower wire tightening devices are connected by a height adjustment device. When the spacing between the two wire locking buckles of the upper wire tightening device and the spacing between the two wire locking buckles of the lower wire tightening device are adjusted by the adjusting fixing rod, the four wire locking buckles can be hung on the four sub-wires respectively, and then the spacing between the upper and lower wire tightening devices is tightened by the height adjustment device, so that the entire wire tightening tool is in a tensioned state to ensure the relative position between the four sub-wires.

[0059] After the wire tightening tool tightens the four sub-conductors, the wire locks at the four corners are respectively subjected to the pulling force of the sub-conductors toward the outside, and a tensioning effect is played in the middle by adjusting the fixing rod. At the same time, adjusting the fixing rod also plays a role in limiting the displacement of the wire locks, so that the force of the two wire tightening fixing rods can be evenly concentrated to the center position of the wire tightening tool, and relative displacement between the two wire locks in the upper tensioner or the lower tensioner under the action of high-altitude wind can be avoided, thereby improving the overall fixing stability of the wire tightening tool to the conductor.

[0060] In a specific embodiment, the ends of the two tightening wire fixing rods are connected to the fixing blocks, and the ends of the tightening wire fixing rods are hinged to the fixing blocks. By providing the fixing blocks, the stability of the ends of the tightening wire fixing rods is further enhanced.

[0061] In a specific embodiment, the wire lock buckle 8 includes a semicircular ring plate 9 with an opening facing upward, and a pressing plate 10 is vertically arranged on the inner side of both ends of the opening of the semicircular ring plate 9, and the end of the pressing plate 10 is hinged to the semicircular ring plate 9, and the other end of the pressing plate 10 is connected to the sealing plate 11, and the lower ends of the two sealing plates 11 are in contact to form a V-shaped structure facing the inner side of the semicircular ring plate 9, and the lower ends of the two sealing plates 11 are connected to the fastening plates 12 inclined toward both sides, and the ends of the fastening plates 12 are hinged to the ends of the sealing plates 11;

[0062] By applying downward force to the pressing plate 10, the lower ends of the two sealing plates 11 are separated to allow the wire to enter. After the wire enters, the two sealing plates 11 are closed, and the two fastening plates 12 are attached to the outer wall of the wire.

[0063] The present invention can prevent the wire from being unhooked and ensure the fixation between the wire lock and the wire by providing a wire lock with a closed and fixed structure, so as to prevent the wire from moving back and forth and scratching the inner wall of the hook. When the wire lock of the present invention is used, first press the two pressing plates downward so that the two sealing plates forming a V-shaped closed structure are separated to both sides, and the wire is hung into the cavity at the bottom of the semicircular ring plate, and the force applied to the pressing plate is withdrawn. The two sealing plates return to their original positions to close the top opening of the semicircular ring plate, and at the same time, the two fastening plates follow the sealing plates to move to be tangent to the outer wall of the wire, so as to form a triangular clamping relationship between the two fastening plates and the semicircular ring plate to ensure the fixation of the wire; since the end of the fastening plate and the end of the sealing plate are hinged structures, the fastening plates can play a good fixing role for wires of different sizes within a certain range.

[0064] In a specific embodiment, the wire lock 8 includes a V-shaped card plate 21 with a V-shaped structure, and lower pressure plates 22 are arranged on the inner sides of both ends of the V-shaped card plate 21. The end of the lower pressure plate 22 is hinged to the V-shaped card plate 21, and the other end of the lower pressure plate 22 is connected to the baffle plate 23. The lower ends of the two baffle plates 23 are in contact to form a V-shaped structure facing the inner side of the V-shaped card plate 21. An elastic plate 24 with an inverted V-shaped structure is arranged below the baffle plate 23. The lower end of the elastic plate 24 is connected to the V-shaped card plate 21, and the upper end of the elastic plate 24 is in contact with the lower end of the baffle plate 23 but not connected.

[0065] The present invention also provides another structure of the wire lock buckle 8. When in use, first press down the two lower pressing plates so that the two baffles forming the V-shaped closed structure are separated toward both sides, and the wire is hung into the cavity of the V-shaped card plate, and then continue to press down the wire to deform the elastic plate, and the wire "sinks" downward into the elastic plate. At this time, the baffle returns to its original position to close the top opening of the V-shaped card plate, and the wire is embedded in the trapezoidal space surrounded by the V-shaped card plate, the baffle plate and the elastic plate. Through the setting of this structure, the wire can be completely prevented from slipping out of the lock buckle from the inside. The present invention buckles the wire on one side of the V-shaped card plate, which can be more conducive to the multi-directional adjustment of the V-shaped card plate and is easy to install on wires of different types of spacing distances.

[0066] In a specific embodiment, the height adjustment device 3 includes a transmission gear 4 and a transmission chain 5, one end of the transmission chain 5 is connected to the lower tensioner 2, and the other end is wound around the transmission gear 4. The transmission chain 5 is tightened or loosened by rotating the transmission gear 4 to adjust the distance between the upper tensioner 1 and the lower tensioner 2.

[0067] The present invention adopts the transmission gear 4 and the transmission chain 5 to tighten the upper and lower tensioners in the height direction. The transmission gear 4 and the transmission chain 5 are flexible transmission structures, which can facilitate the upper and lower tensioners to be installed on the wire separately in a relatively ample space, thereby avoiding the upper and lower tensioners from influencing each other during the installation process. That is, when the transmission chain is in a relaxed state, the upper tensioner 1 will not be affected by the weight of the lower tensioner when it is installed. The two are independent of each other. Only when the transmission chain is tightened to make it in a taut state, a mutual force will be generated between the upper and lower tensioners.

[0068] In a specific embodiment, the interior of the tensioning fixing rod is a hollow structure, and a connecting chain 24 is sleeved inside the tensioning fixing rod. One end of the connecting chain extends out of the upper end of the tensioning fixing rod to connect to the wire lock buckle, and the other end extends out of the lower end of the tensioning fixing rod to connect to the height adjustment device.

[0069] Since the wire tightening and fixing rod is a rigid connection structure, when the wire is hung, the wire locks at the left and right ends of the wire tightening device are linked, that is, when one wire lock is installed and then another wire lock is installed, the wire tightening device needs to move as a whole, which will easily pull the wire on which the wire lock is already installed; therefore, the present application sets a "soft" connection chain inside the wire tightening and fixing rod, and the respective actions of the wire locks at both ends of the wire tightening device are independent of each other and will not affect each other. After all the wire locks are hung, during the tightening of the transmission chain, since the spacing angle between the wire tightening and fixing rods has been adjusted in advance according to the spacing between the wires, during the tightening of the transmission chain, the wire tightening and fixing rod continuously slides upward on the connection chain according to a preset angle until the upper end of the wire tightening and fixing rod contacts the wire lock, completing the tightening of the entire tool. The wire tightening and fixing rod with a rigid connection structure ensures the limitation of the connection chain during the tightening process and controls its freedom of movement, thereby improving the stability of the overall structure and preventing the wire from swinging back and forth with the tool during the tightening process.

[0070] In a specific embodiment, a clearance hole 13 opened along the circumferential direction is provided on the semicircular ring plate 9 at the end opposite to the fastening plate 12. The clearance hole 13 is used to allow the end of the fastening plate 12 to extend when the pressing plate 10 is pressed downward. The present invention provides a clearance hole so that the fastening plate has enough space to make way when the wire is hung in the semicircular ring plate, thereby ensuring that the sealing plate can be opened normally.

[0071] In a specific embodiment, the upper end of the fastening plate 12 and the lower end of the sealing plate 11, and the end of the pressing plate 10 and the semicircular ring plate 9 are hinged by a reset spring. The present invention provides a reset spring, and when the size of the wire is large, the angle between the two fastening plates can be increased while ensuring that the sealing plate is normally fitted and closed, and then the fastening plate can tightly clamp the wire under the action of the reset spring.

[0072] In a specific embodiment, the fastening plate 12 is made of rubber material or the outer wall of the fastening plate 12 is coated with a soft silicone layer, that is, the fastening plate and the wire are in soft contact to avoid damage to the outer wall of the wire.

[0073] In a specific embodiment, the telescopic structure of the adjusting and fixing rod 7 includes a hollow adjusting cylinder 14, a driving bevel gear 15 whose axis is perpendicular to the hollow adjusting cylinder 14 is arranged in the hollow adjusting cylinder 14, and driven bevel gears 16 whose axis is parallel to the hollow adjusting cylinder 14 are respectively meshed on both sides of the driving bevel gear 15, and a threaded rod 17 is coaxially connected to the driven bevel gear 16, and a telescopic sleeve 18 is threadedly connected to the outside of the threaded rod 17, and the telescopic sleeve 18 can make horizontal linear motion along the inner wall of the hollow adjusting cylinder 14, and the end of the telescopic sleeve 18 is hinged to the lower end of the tensioning and fixing rod 6;

[0074] By rotating the driving bevel gear 15, the driven bevel gear 16 is driven to rotate, and the driven bevel gear 16 drives the threaded rod 17 to rotate together, thereby driving the telescopic sleeve 18 to move toward the outside or inside of the hollow adjustment cylinder 14, so as to adjust the distance and height between the lower ends of the two tightening fixing rods 6.

[0075] The present invention can realize the simultaneous extension and retraction of telescopic sleeves on both sides of the hollow adjustment cylinder by arranging a bevel gear meshing structure, thereby realizing the adjustment of the length of the fixed rod.

[0076] In a specific embodiment, the opening of the wire lock buckle 8 of the upper tensioner 1 is facing downward, that is, the opening of the wire lock buckle of the lower tensioner is facing upward. In this way, in the process of tightening the wire, the part of the wire lock buckle that is pulled outward by the wire is a semicircular ring plate, which can improve the locking effect of the wire lock buckle on the wire and prevent the wire from escaping from the lock buckle.

[0077] In a specific embodiment, both ends of the opening of the wire lock buckle 8 are connected to the ends of the wire tightening and fixing rod 6 through chains 20, respectively, and one of the chains 20 is detachably connected to the end of the wire tightening and fixing rod 6.

[0078] The present invention connects the wire lock buckle by a chain, so that the wire lock buckle can rotate freely relative to the wire tightening and fixing rod, thereby facilitating the wire lock buckle to be hung on the wire. In addition, the two ends of the wire lock buckle are installed on the end of the wire tightening and fixing rod through a chain, that is, when the wire lock buckle is in a working state, the force received by the wire is not horizontal or vertical, but inclined. Therefore, during the force-bearing process, it is easy for the fastening plate and the sealing plate to be stressed so that the wire lock buckle opening is opened and falls off from the wire. The two chains are arranged so that the orientation can be adjusted at any time under the action of the wire tension so that the stressed part is always kept on the semicircular ring plate, thereby preventing the wire lock buckle from falling off the wire and ensuring the balance of the wire lock buckle. The present invention utilizes a "flexible" chain to improve the freedom of the wire lock buckle, and utilizes a "rigid" wire tightening and fixing rod to ensure the relative position between the two wire lock buckles. Through the combination of rigidity and flexibility, not only the stability of the wire tightening is guaranteed, but also the connectivity between the wire tightening tool and the wire is guaranteed.

[0079] In a specific embodiment, a driving shaft 19 is coaxially connected to the driving bevel gear 15 , and the length of the fixed rod can be extended or shortened by rotating the driving shaft 19 .

[0080] In a specific embodiment, an operating handle is installed on the transmission gear 4, and the drive shaft 19 can also be connected to the transmission gear through a synchronous chain. In this way, during the overall tightening of the tensioning device, the four wire locks can be tightened up and down and left and right at the same time by rotating the operating handle, which is more convenient to operate.

[0081] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wire tightening tool for assisting in replacing a spacer bar, characterized in that: The invention comprises an upper tensioner (1) and a lower tensioner (2), wherein the upper tensioner (1) and the lower tensioner (2) have the same structure and are arranged symmetrically up and down, and the upper tensioner (1) and the lower tensioner (2) are connected via a height adjustment device (3); The tensioner (1) comprises two tensioning fixing rods (6) connected at the lower ends, an adjusting fixing rod (7) connected between the upper ends of the two tensioning fixing rods (6), the two tensioning fixing rods (6) and the adjusting fixing rod (7) are connected to form a triangular structure, the adjusting fixing rod (7) has a telescopic structure, the telescopic structure adjusts the distance between the upper ends of the two tensioning fixing rods (6) by extending or shortening, the connecting ends of the two tensioning fixing rods (6) and the tensioning fixing rods (6) and the adjusting fixing rods (7) are all connected in a hinged manner; and a wire lock buckle (8) is provided on the free end of the tensioning fixing rod (6).

2. A wire tightening tool for assisting in replacing a spacer rod according to claim 1, characterized in that: The wire lock buckle (8) comprises an open semicircular ring plate (9), and a pressing plate (10) is vertically arranged on the inner sides of both ends of the opening of the semicircular ring plate (9), and the end of the pressing plate (10) is hinged to the semicircular ring plate (9), and the other end of the pressing plate (10) is connected to the sealing plate (11), and the lower ends of the two sealing plates (11) are in contact to form a V-shaped structure facing the inner side of the semicircular ring plate (9), and the lower ends of the two sealing plates (11) are connected to the fastening plates (12) inclined toward both sides, and the ends of the fastening plates (12) are hinged to the ends of the sealing plate (11); By applying an inward force to the pressing plate (10), the lower ends of the two sealing plates (11) are separated to allow the wire to enter, and after the wire enters, the two sealing plates (11) are closed, and the two fastening plates (12) are attached to the outer wall of the wire.

3. A wire tightening tool for assisting in replacing a spacer rod according to claim 1, characterized in that: The wire lock buckle (8) comprises a V-shaped card plate (21) with a V-shaped structure, and lower pressure plates (22) are arranged on the inner sides of both ends of the V-shaped card plate (21), and the end of the lower pressure plate (22) is hinged to the V-shaped card plate (21), and the other end of the lower pressure plate (22) is connected to the baffle plate (23), and the lower ends of the two baffle plates (23) are in contact to form a V-shaped structure facing the inner side of the V-shaped card plate (21), and an elastic plate (24) with an inverted V-shaped structure is arranged below the baffle plate (23), and the lower end of the elastic plate (24) is connected to the V-shaped card plate (21), and the upper end of the elastic plate (24) is in contact with the lower end of the baffle plate (23) but not connected.

4. A wire tightening tool for assisting in replacing spacer bars according to claim 1, characterized in that: The height adjustment device (3) comprises a transmission gear (4) and a transmission chain (5); one end of the transmission chain (5) is connected to the lower tensioner (2), and the other end is wound around the transmission gear (4); the transmission chain (5) is tightened or loosened by rotating the transmission gear (4) to adjust the distance between the upper tensioner (1) and the lower tensioner (2).

5. A wire tightening tool for assisting in replacing spacer bars according to claim 2, characterized in that: A clearance through hole (13) opened along the circumferential direction is provided on the semicircular ring plate (9) at the end portion facing the fastening plate (12). The clearance through hole (13) is used to allow the end portion of the fastening plate (12) to extend when the pressing plate (10) is pressed downward.

6. A wire tightening tool for assisting in replacing spacer bars according to claim 2, characterized in that: The upper end of the fastening plate (12) and the lower end of the sealing plate (11), and the end of the pressing plate (10) and the semicircular ring plate (9) are hinged via a return spring.

7. A wire tightening tool for assisting in replacing a spacer rod according to claim 2, characterized in that: The wire lock buckle (8) of the tensioner (1) opens downward, and the fastening plate (12) is made of rubber material or the outer wall of the fastening plate (12) is coated with a soft silicone layer.

8. A wire tightening tool for assisting in replacing a spacer rod according to claim 1, characterized in that: The telescopic structure of the adjusting and fixing rod (7) comprises a hollow adjusting cylinder (14), a driving bevel gear (15) whose axis is perpendicular to the hollow adjusting cylinder (14) is arranged in the hollow adjusting cylinder (14), driven bevel gears (16) whose axis is parallel to the hollow adjusting cylinder (14) are respectively meshed on both sides of the driving bevel gear (15), a threaded rod (17) is coaxially connected to the driven bevel gear (16), and a telescopic sleeve (18) is threadedly connected to the outside of the threaded rod (17), and the telescopic sleeve (18) can move horizontally and linearly along the inner wall of the hollow adjusting cylinder (14), and the end of the telescopic sleeve (18) is hinged to the lower end of the tensioning and fixing rod (6); The driven bevel gear (16) is driven to rotate by rotating the driving bevel gear (15), and the driven bevel gear (16) drives the threaded rod (17) to rotate together, thereby driving the telescopic sleeve (18) to move toward the outside or inside of the hollow adjustment cylinder (14), thereby achieving the adjustment of the distance between the ends of the two tightening fixing rods (6).

9. A wire tightening tool for assisting in replacing a spacer rod according to claim 2, characterized in that: The two ends of the opening of the wire lock buckle (8) are respectively connected to the ends of the wire tightening and fixing rod (6) through lock chains (20), wherein one of the lock chains (20) is detachably connected to the end of the wire tightening and fixing rod (6).

10. A wire tightening tool for assisting in replacing a spacer rod according to claim 7, characterized in that: The driving bevel gear (15) is coaxially connected with a driving shaft (19), and an operating handle is installed on the transmission gear (4). The driving shaft (19) can also be connected to the transmission gear (4) through a synchronous chain.

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