Fixed-tension wire tightener for overhead conductor

Abstract

The invention relates to the technical field of power construction tools, in particular to an overhead conductor constant tension tightener which comprises a fixed base, a tension bearing frame is arranged in the fixed base, a tightening assembly is arranged in the fixed base, the tightening assembly comprises a rotating shaft movably arranged on the tension bearing frame, and a chain wheel is arranged on the rotating shaft. According to the steel cable winding device, the winding roller is arranged to drive the limiting sliding block to reciprocate on the reciprocating lead screw in the winding process, and in the whole moving process, the function of automatically arranging the wound steel cable is achieved; and meanwhile, after the steel cable on the winding roller is about to be wound by one layer, the first semi-ring cylinder can be driven to contract inwards, so that the subsequent steel cable is wound on a new winding layer, the wound steel cable forms a winding layer again, and the situation that multiple layers of wound steel cables are stacked together is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power construction tools, and particularly to an overhead wire constant-tension tightener. Background Art

[0002] The overhead wire constant-tension tightener is a key tool in the construction and maintenance of power lines. It is mainly used to accurately control the tension when erecting or replacing wires, ensuring that the overhead wires are tightened under a constant tension and safely erected through the cooperation with a traction machine and a pulley block.

[0003] For example, an overhead wire constant-tension tightener with the publication number CN214755193U judges the tension degree of the entire overhead wire through a set alarm mechanism. After the wire is tightened to an appropriate sag, the set alarm mechanism is triggered to remind the operator that this overhead wire has been erected, avoiding the situation of inconsistent tension of multiple wires.

[0004] However, in the process of using the above patent to tighten the overhead wire by continuously winding the steel cable, the steel cable cannot be automatically arranged neatly and wound in the winding drum. As a result, the steel cable will accumulate in a "mountain" shape on one side of the winding drum, eventually jamming the equipment. At the same time, the accumulated steel cables will cause friction between the steel cables, damaging the outer galvanized layer or the wire insulation layer, resulting in surface wear. Under this frictional extrusion, the steel cable will produce permanent deformation, affecting the service life of the entire steel cable. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the present invention provides an overhead wire constant-tension tightener, which has the advantage of being able to neatly arrange the wound steel cable. At the same time, during the entire wire arrangement process, the wound steel cables can avoid the upper and lower layer overlapping contacts, resulting in local depression deformation of the steel cable.

[0006] To achieve the above object, the present invention provides the following technical solution: An overhead wire constant-tension tightener, including a fixed base, a tension bearing frame is arranged inside the fixed base, and a tightening component is arranged inside the fixed base; The tightening component includes a rotating shaft movably arranged on the tension bearing frame, a rotating ratchet is arranged on the rotating shaft, an operating handle is movably arranged on the rotating shaft, and a swinging lock block is arranged on the operating handle. A sprocket is arranged on the rotating shaft, a chain is externally engaged with the sprocket, the other end of the chain is movably arranged with a winding roller, and a sprocket is arranged on the winding roller to form a meshing drive with the chain. A wire arrangement component is arranged on the winding roller; The wire harness assembly includes a protective sleeve movably arranged on a tension bearing frame. A reciprocating lead screw is movably arranged on the protective sleeve. A conveyor belt is arranged at one end of the reciprocating lead screw close to the chain. A limit slider is movably arranged on the reciprocating lead screw. A steel cable is movably arranged inside the limit slider. By swinging the operating handle, the rotating ratchet wheel and the rotating shaft are driven to rotate. Under the rotation of the rotating shaft, through the cooperation between the sprocket and the chain arranged, the winding roller is driven to rotate. At the same time, the reciprocating lead screw is rotated by the conveyor belt. Under the movement of the limit slider arranged on the reciprocating lead screw, the steel cable is driven to move synchronously, so that it is neatly arranged on the winding roller.

[0007] Preferably, one-way ratchets are arranged in an array on the rotating shaft. Fixed supports are arranged in an array inside the fixed base. Rotating clamping blocks are movably arranged in an array on the fixed supports. And the rotating clamping blocks are in cooperation with the one-way ratchets. A meshing group is movably arranged on one side of the fixed support far from the rotating clamping blocks. And the meshing group is composed of an external tooth ring and the rotating gears at the other ends of the respective rotating clamping blocks.

[0008] Preferably, fixed rods are arranged in an array on the tension bearing frame. Entrance guide wheels are movably arranged on the fixed rods. Ball bearings are arranged in an array inside the limit slider. A matching groove is formed on the protective sleeve. A first closing assembly is movably arranged inside the protective sleeve. A second closing assembly is movably arranged inside the protective sleeve. And the second closing assembly and the first closing assembly are in a nested relationship.

[0009] Preferably, the first closing assembly includes a square clamping seat arranged inside the protective sleeve. A shrinkage plate is movably arranged at one end of the square clamping seat far from the protective sleeve. Arc-shaped grooves are symmetrically formed on the shrinkage plate. A support clamping plate is arranged inside the protective sleeve. And the support clamping plate is located on the side of the shrinkage plate far from the winding roller. First semi-cylindrical rings are symmetrically and movably arranged on the support clamping plate. A positioning rod is arranged on one side of the first semi-cylindrical ring close to the support clamping plate. And the positioning rod is clamped and slid with the arc-shaped groove and the support clamping plate.

[0010] Preferably, a matching shaft hole is formed on one side of the winding roller close to the support clamping plate. Shrinkage rods are movably arranged in an array on one side of the winding roller close to the matching shaft hole. And a first spring is sleeved outside the shrinkage rods. An annular abutting plate is arranged at one end of the shrinkage rod far from the winding roller.

[0011] Preferably, a clamping shaft cylinder is arranged on the shrinkage plate. And the clamping shaft cylinder and the winding roller are on the same central axis. A fixing plate is arranged inside the protective sleeve. And the fixing plate is located on the side of the support clamping plate far from the first semi-cylindrical ring.

[0012] Preferably, sliding rods are symmetrically arranged at one end of the fixed plate away from the protective sleeve. A directional push plate is movably arranged at one end of the sliding rod away from the fixed plate. A rotating plate is movably arranged at one end of the directional push plate away from the engaging shaft cylinder. A Z-shaped pressing plate is movably arranged at one end of the rotating plate away from the directional push plate. The Z-shaped pressing plate is clamped and slid inside the fitting groove. A second spring is sleeved outside the sliding rod, and a part of the second spring is placed inside the cavity of the directional push plate.

[0013] Preferably, the second closing assembly includes a semi-circular limiting plate arranged on the side of the protective sleeve away from the supporting splint. A rotating disc is movably arranged on the semi-circular limiting plate. Linear square grooves are symmetrically formed on the rotating disc. A square guide plate is movably arranged inside the linear square grooves. A second semi-circular cylinder is arranged at one end of the square guide plate away from the rotating disc. An annular reverse tooth plate is movably arranged on the side of the rotating disc close to the second semi-circular cylinder. Elastic clamping blocks are arranged in an array on the side of the annular reverse tooth plate away from the second semi-circular cylinder.

[0014] Preferably, a one-way ratchet groove is formed through the rotating disc, and the one-way ratchet groove forms a clamping and sliding connection with the elastic clamping blocks. A mating reverse tooth plate is movably arranged on the side of the first semi-circular cylinder close to the rotating disc.

[0015] Preferably, an L-shaped baffle is arranged at one end of the mating reverse tooth plate away from the rotating disc. A pulling handle is arranged on the protective sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, during the winding process of the winding roller, the limiting slider is driven to reciprocate on the reciprocating lead screw. During the entire movement process, the function of automatically arranging the steel cable during winding is realized. At the same time, during the cable arranging process, in order to avoid the overall angle of the steel cable entering the winding roller being too large, resulting in irregular winding of the steel cable, the inlet guide wheel is used to guide it and adjust the overall angle of the steel cable. The balls arranged inside the limiting slider can reduce the friction between the steel cable and the limiting slider, and reduce the wear degree caused by the contact between the surface of the entire steel cable and the limiting slider during the winding process; 2. At the same time, when the steel cable on the winding roller is about to complete one layer of winding, it will drive the first semi-circular cylinder to contract inward, so that the subsequent steel cable is wound on a new winding layer, and the wound steel cable forms a new winding layer again, avoiding the multi-layer wound steel cables from being stacked together, resulting in friction and extrusion between the steel cables, causing permanent deformation of the steel cables and affecting the service life of the entire steel cable. After the first semi-circular cylinder is contracted and spliced and closed, the overall outer diameter is much larger than that of the winding roller, so that the overall bending degree of the steel cable will be reduced, further reducing the occurrence of fracture caused by excessive bending degree of the steel cable; 3. After the two first semi-cylindrical tubes and the two second semi-cylindrical tubes are respectively spliced and closed at the same time, the steel cable wound inside can be protected. When the wound steel cable breaks due to excessive pulling force, when the steel cable in the winding part rebounds and causes a whipping effect, it can also be intercepted by the closed environment of the spliced first semi-cylindrical tube and the second semi-cylindrical tube, avoiding the steel cable directly hitting the operator when the whipping effect occurs and causing injury to the operator. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the whole device of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall back structure of the device of the present invention.

[0019] Figure 3 It is a schematic diagram of the semi-sectional structure of the device of the present invention.

[0020] Figure 4 It is a schematic diagram of the overall exploded structure of the device of the present invention.

[0021] Figure 5 It is a schematic diagram of the partial structure inside the rotating shaft and the protective sleeve of the device of the present invention.

[0022] Figure 6 It is a schematic diagram of the partial structure of the wire arranging component of the device of the present invention.

[0023] Figure 7 It is a schematic diagram of the partial exploded structure of the first closing component of the device of the present invention.

[0024] Figure 8 For the device of the present invention Figure 4 Partial enlarged schematic diagram at position A.

[0025] Figure 9 For the device of the present invention Figure 4 Partial enlarged schematic diagram at position B.

[0026] Figure 10 It is a schematic diagram of the partial exploded structure of the first closing component of the device of the present invention.

[0027] Figure 11 For the device of the present invention Figure 7 Partial enlarged schematic diagram at position C.

[0028] Figure 12 For the device of the present invention Figure 7 Partial enlarged schematic diagram at position D.

[0029] Figure 13 It is a schematic diagram of the overall placement structure of the first semi-cylindrical tube and the second semi-cylindrical tube inside the protective sleeve of the device of the present invention.

[0030] Figure 14 Explosion schematic diagram of the internal structure of the protective sleeve of the device of the present invention.

[0031] Figure 15 Partial explosion structure schematic diagram of the second closing assembly of the device of the present invention.

[0032] In the figure: 1. Fixed base; 11. Fixed support; 2. Tension bearing frame; 21. Fixed rod; 22. Inlet guide wheel; 3. Tightening assembly; 31. Rotating shaft; 311. One-way ratchet; 312. Rotating clamping block; 313. Meshing group; 32. Rotating ratchet; 33. Operating handle; 34. Sprocket; 35. Chain; 36. Winding roller; 361. Matching shaft hole; 362. Shrinkage rod; 363. First spring; 364. Annular pressing plate; 4. Cable arranging assembly; 41. Protective sleeve; 411. Matching groove; 412. Fixed plate; 413. Sliding rod; 414. Directional pushing plate; 415. Rotating plate; 416. Z-shaped pressing plate; 417. Second spring; 418. Pulling handle; 42. Reciprocating lead screw; 43. Conveyor belt; 44. Limit slider; 5. Steel cable; 6. First closing assembly; 61. Square card seat; 62. Shrinking plate; 621. Arc groove; 622. Clamping shaft cylinder; 63. Support clamping plate; 64. First half ring cylinder; 641. Matching reverse tooth plate; 642. L-shaped baffle; 65. Positioning rod; 7. Second closing assembly; 71. Half ring limit plate; 72. Rotating disk; 721. Linear square groove; 722. One-way ratchet groove; 73. Square guide plate; 74. Second half ring cylinder; 75. Annular reverse tooth plate; 76. Elastic clamping block. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0034] Please refer to Figures 1 to 9, which is the first embodiment of the present invention, provides a technical solution: an overhead wire constant-tension tightener, including a fixed base 1. The fixed base 1 is used to provide stability and disperse the force of the entire device. Inside the fixed base 1, there is a tension-bearing frame 2. The tension-bearing frame 2 fixes the entire tightener to a utility pole or a temporary anchor point through a hook provided at one end, and is used to bear the reaction force from the wire tension. Inside the fixed base 1, there is a tightening component 3. The tightening component 3 is used to wind the steel cable 5. By continuously winding the steel cable 5, one end of the steel cable 5 tightens the overhead wire installed with a clamp through a hook, so that the overall sag of the overhead wire reaches an appropriate angle; The tightening component 3 includes a rotating shaft 31 movably arranged on the tension-bearing frame 2. A rotating ratchet 32 is arranged on the rotating shaft 31. The rotating ratchet 32 is located at the center of the rotating shaft 31. At the same time, the rotating ratchet 32 is fixedly connected to the rotating shaft 31, and the rotating shaft 31 supports the rotating ratchet 32. Under the swing of an operator, an operating handle 33 installed on the rotating shaft 31 makes a swing lock block arranged on the operating handle 33 push the rotating ratchet 32 to start rotating. Under the rotation of the rotating ratchet 32, the entire rotating shaft 31 rotates. The operating handle 33 is movably arranged on the rotating shaft 31, and a swing lock block is arranged on the operating handle 33. The operating handle 33 is rotationally engaged with the rotating shaft 31. When the operating handle 33 swings counterclockwise, the arranged swing lock block drives the rotating ratchet 32 to rotate. When the operating handle 33 returns and falls, the swing lock block swings and no longer applies pressure to the entire rotating ratchet 32, preventing the rotating ratchet 32 from being driven to reset again under the action of the swing lock block. A sprocket 34 is arranged on the rotating shaft 31. A chain 35 is externally engaged with the sprocket 34. The chain 35 is used to transmit the rotation of the rotating shaft 31. At the other end of the chain 35, there is also a sprocket 34, which is installed on a winding roller 36. The other end of the chain 35 is movably arranged with the winding roller 36, and a sprocket 34 is arranged on the winding roller 36 to form a meshing drive with the chain 35. The winding roller 36 is used to wind the steel cable 5, so that when an operator operates the entire operating handle 33, the steel cable 5 can be continuously wound. A wire arranging component 4 is arranged on the winding roller 36; The wire harness assembly 4 includes a protective sleeve 41 movably arranged on the tension bearing frame 2. The protective sleeve 41 is integrally in an open C-shaped structure, which is convenient for operators to observe the winding state of the steel cable 5 inside the entire protective sleeve 41 during daily maintenance, facilitating maintenance. A reciprocating lead screw 42 is movably arranged on the protective sleeve 41. The reciprocating lead screw 42 is used to limit the steel cable 5 arranged thereon by the limit slider 44 arranged thereon. When the winding roller 36 winds the steel cable 5, the reciprocating lead screw 42 will rotate synchronously under the drive of the conveyor belt 43. When the reciprocating lead screw 42 rotates, the arranged limit slider 44 will move reciprocally. During the entire reciprocating movement process, the wound steel cable 5 is neatly arranged. A conveyor belt 43 is arranged at one end of the reciprocating lead screw 42 close to the chain 35. The conveyor belt 43 is used to synchronously transfer the rotational force of the winding roller 36 to the reciprocating lead screw 42, causing the reciprocating lead screw 42 to rotate, thereby driving the limit slider 44 to move reciprocally on the reciprocating lead screw 42. A limit slider 44 is movably arranged on the reciprocating lead screw 42. The center of the limit slider 44 has a through-hole. By passing the steel cable 5 through the central through-hole of the limit slider 44, when the limit slider 44 displaces, the steel cable 5 can be driven to move synchronously, so that the wound steel cable 5 can be neatly arranged on the winding roller 36. The steel cable 5 is movably arranged inside the limit slider 44, and one end of the steel cable 5 is matched with the conical groove of the winding cylinder through a wedge-shaped metal block with the winding roller 36. After the steel cable 5 passes through the fixture, under the action of the pulling force, the wedge block is clamped tighter and tighter, realizing self-locking. A hook is arranged at one end of the steel cable 5 far from the winding roller 36, and the connection to the overhead conductor is realized through this hook; By swinging the operating handle 33, the rotating ratchet 32 and the rotating shaft 31 are driven to rotate. Under the rotation of the rotating shaft 31, through the cooperation between the arranged sprocket 34 and the chain 35, the winding roller 36 is driven to rotate. At the same time, the reciprocating lead screw 42 is rotated through the conveyor belt 43. Under the movement of the limit slider 44 arranged on the reciprocating lead screw 42, the steel cable 5 is driven to move synchronously, so that it is neatly arranged on the winding roller 36.

[0035] The rotating shaft 31 is provided with a one-way ratchet 311 arranged in an array. The one-way ratchet 311 is used to cooperate with a rotating catch 312 arranged on the fixed support 11. After the rotating catch 312 engages with the one-way ratchet 311, the rotating shaft 31 can only rotate in one direction under the action of the one-way ratchet 311, avoiding the situation that after the operating handle 33 releases the drive of the rotating ratchet 32, the wound steel cable 5 is pulled out again under the pulling of the overhead conductor, resulting in the ultimate failure of tightening the overhead conductor. The fixed base 1 is internally provided with fixed supports 11 arranged in an array. The fixed supports 11 are movably provided with rotating catches 312 arranged in an array. And the rotating catches 312 cooperate with the one-way ratchet 311. The rotating catches 312 form a snap rotation with the fixed supports 11 through a rotating rod. Under the cooperation between the rotating catches 312 and the one-way ratchet 311, the one-way ratchet 311 can only rotate in one direction, thereby realizing the limit of the rotation direction of the rotating shaft 31 fixedly connected to the one-way ratchet 311. A meshing group 313 is movably arranged on one side of the fixed support 11 away from the rotating catch 312. And the meshing group 313 is composed of an external tooth ring and a rotating gear at the other end of each rotating catch 312. Among them, the external tooth ring is snap-rotated with the fixed support 11, and the rotating gear is fixedly connected to each rotating catch 312 through a rotating rod. When the external tooth ring is rotated, the internal rotating gears will rotate synchronously, thereby driving the rotating catches 312 to release the limiting effect on the one-way ratchet 311. After the limiting effect is released, the operator can pull out the steel cable 5 stored on the winding roller 36 again, facilitating the subsequent tightening operation of the next overhead conductor.

[0036] The fixed rods 21 are arranged in an array on the tension bearing frame 2. Through the fixing effect between the fixed rods 21 and the tension bearing frame 2 and the sliding effect formed between the inlet guide pulley 22 and the fixed rods 21, the overall angle of the steel cable 5 can be adjusted before it enters the winding roller 36, ensuring that the steel cable 5 enters in the tangential direction. The inlet guide pulley 22 is movably arranged on the fixed rods 21 and is used to guide the steel cable 5 during the winding process. Ball bearings are arranged in an array inside the limit slider 44, and the ball bearings are used to reduce the friction force formed between the steel cable 5 and the limit slider 44 during the winding process. A mating groove 411 is formed on the protective sleeve 41. The mating groove 411 is used to facilitate the entry of the steel cable 5 into the interior of the protective sleeve 41. At the same time, the arranged mating groove 411 can limit the overall movement of the limit slider 44, preventing the limit slider 44 from rotating under the drive of the reciprocating screw rod 42, which may affect the winding of the steel cable 5. A first closing assembly 6 is movably arranged inside the protective sleeve 41. The first closing assembly 6 is used to automatically close after the winding roller 36 has wound one layer of the steel cable 5, enabling the subsequent steel cable 5 to enter the outside of the closed first half-ring cylinder 64, preventing the subsequent steel cable 5 from being stacked on the steel cable 5 on the winding roller 36 and causing the steel cable 5 in the lower layer to be squeezed and deformed. A second closing assembly 7 is movably arranged inside the protective sleeve 41, and the second closing assembly 7 is nested with the first closing assembly 6. The second closing assembly 7 can be driven to form a third winding layer after the first closing assembly 6 has wound the steel cable 5, increasing the overall winding length of the steel cable 5.

[0037] The first closing component 6 includes a square clamping seat 61 disposed inside the protective sleeve 41. One end of the square clamping seat 61 is fixedly connected to the protective sleeve 41, and the other end is rotatably connected to the shrinkage plate 62. When the shrinkage plate 62 rotates, it will not drive the square clamping seat 61 to rotate. At the same time, the square clamping seat 61 can also limit the overall shrinkage plate 62 to prevent displacement of the shrinkage plate 62 during rotation. A shrinkage plate 62 is movably disposed at one end of the square clamping seat 61 away from the protective sleeve 41. Arc-shaped grooves 621 are symmetrically formed on the shrinkage plate 62. Through the cooperation of the arc-shaped grooves 621 and the positioning rods 65 provided on the first half-ring cylinders 64, when the shrinkage plate 62 rotates, the two first half-ring cylinders 64 can be driven to shrink until they are spliced together to form a new winding layer, so that the subsequently wound steel cable 5 is placed on the outer surface of the first half-ring cylinders 64. Arc-shaped grooves 621 are symmetrically formed on the shrinkage plate 62. A support clamping plate 63 is disposed inside the protective sleeve 41, and the support clamping plate 63 is located on the side of the shrinkage plate 62 away from the winding roller 36. A guiding groove is formed on the side of the support clamping plate 63 close to the shrinkage plate 62. The movement of the positioning rod 65 is limited through the guiding groove, so that during the entire movement process of the positioning rod 65, the movement of the first half-ring cylinder 64 can be limited under the overall limitation of the arc-shaped groove 621 on the shrinkage plate 62 and the support clamping plate 63. First half-ring cylinders 64 are symmetrically and movably disposed on the support clamping plate 63. An entry through-hole for the steel cable 5 to enter the upper layer is formed at one end of the two first half-ring cylinders 64. When the first half-ring cylinders 64 contract inward to form a new winding layer, the steel cable 5 can enter the upper layer through the formed entry through-hole. A positioning rod 65 is disposed on the side of the first half-ring cylinder 64 close to the support clamping plate 63, and the positioning rod 65 is engaged and slid with the arc-shaped groove 621 and the support clamping plate 63. The positioning rod 65 provided on the first half-ring cylinder 64 is limited as a whole under the action of the arc-shaped groove 621 and the guiding groove on the support clamping plate 63, and at the same time, the first half-ring cylinder 64 at the upper end is prevented from descending in the initial state.

[0038] The winding roller 36 is provided with a mating shaft hole 361 on one side close to the support clamping plate 63. The mating shaft hole 361 is used to cooperate with the engaging shaft cylinder 622 provided on the shrinkage plate 62. The mating shaft hole 361 is in a shape of a through hole combined with an engaging cylinder. When the engaging shaft cylinder 622 is driven to engage into the interior of the mating shaft hole 361, the provided shrinkage plate 62 will rotate under the drive of the engaging shaft cylinder 622. The rotating shrinkage plate 62 will drive the first half-ring cylinder 64 to shrink inward to form a new winding layer. The winding roller 36 is provided with shrinkage rods 362 arranged in an array on one side close to the mating shaft hole 361, and a first spring 363 is sleeved outside the shrinkage rods 362. A cavity is opened at the position of the shrinkage rods 362 on the winding roller 36, so that the shrinkage rods 362 can engage and slide in the cavity, avoiding the entire shrinkage rods 362 from affecting the movement of the shrinkage plate 62. One end of the shrinkage rod 362 away from the winding roller 36 is provided with an annular abutting plate 364. The annular abutting plate 364 is used to abut against one side of the shrinkage plate 62, so that when there is no external force acting on the shrinkage plate 62, it can be pushed by the first spring 363 to reset, so that the engaging shaft cylinder 622 disengages from the mating shaft hole 361.

[0039] During the use process, the rotating clamping block 312 on the fixed support 11 is rotated through the engaging group 313 to limit the rotation of the one-way ratchet wheel 311, so that the rotating shaft 31 can only rotate in one direction at this moment and there will be no rebound. Then, under the operation of the operator pushing the operation handle 33, the rotating shaft 31 starts to rotate. With the cooperation of the sprocket 34 and the chain 35 arranged on one side of the rotating shaft 31, the rotational force is transmitted to the winding roller 36. Through the winding of the steel cable 5 by the winding roller 36, during the continuous winding of the steel cable 5, the external overhead conductor is tightened. At the same time, during this process, the rotating winding roller 36 will also drive the limit slider 44 to move reciprocally, and automatically arrange the wound steel cable 5 during the entire movement process, avoiding the accumulation of the wound steel cable 5. When the steel cable 5 wound by the winding roller 36 gradually moves to the other end, the limit slider 44 and the steel cable 5 will contact the Z-shaped pressing plate 416 provided on the protective sleeve 41. The Z-shaped pressing plate 416 drives the first closing assembly 6 to close, thereby forming a new winding layer, so that the subsequent steel cable 5 is wound in the new winding layer, thus avoiding the overall deformation of the steel cable 5 caused by the overlapping pressure between the steel cables 5. At the same time, the closed first closing assembly 6 can protect the wound steel cable 5. When the steel cable 5 on the first closing assembly 6 is fully wound, the second closing assembly 7 will be automatically started, thereby forming a new winding layer, so that the steel cable 5 will not be extruded and deformed between each layer of winding. At the same time, through the wrapping method, it can be avoided that when the pressure of the wound steel cable 5 is too large, the steel cable 5 at the winding roller 36 section breaks, causing a whip effect and injuring the operator. After the tightening and fixing of the entire overhead conductor are completed, the limit of the rotating clamping block 312 on the one-way ratchet wheel 311 is released, which is convenient for pulling out the steel cable 5 and resetting the entire device. Embodiment 2

[0040] Please refer to Figures 1 to 13 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is as follows: A clamping shaft cylinder 622 is provided on the contraction plate 62, and the clamping shaft cylinder 622 and the winding roller 36 are on the same central axis. An open perforation is arrayed on one side of the clamping shaft cylinder 622 close to the mating shaft hole 361. At the same time, the entire clamping shaft cylinder 622 penetrates through both sides of the contraction plate 62. One end of the clamping shaft cylinder 622 away from the mating shaft hole 361 contacts the directional push plate 414. Through the push of the directional push plate 414, the clamping shaft cylinder 622 and the contraction plate 62 move towards the winding roller 36, and finally form a clamping state. Through the rotation of the winding roller 36, the two first half-ring cylinders 64 are driven to rotate. A fixing plate 412 is arranged inside the protective sleeve 41, and the fixing plate 412 is on the side of the support clamping plate 63 away from the first half-ring cylinder 64.

[0041] On both sides of the fixing plate 412 away from one end of the protective sleeve 41, sliding rods 413 are symmetrically arranged. At the end of the sliding rod 413 away from the fixing plate 412, a directional push plate 414 is movably arranged. The directional push plate 414 is integrally composed of a straight plate and a square plate. The square plate is a hollow square plate, and the side close to the engaging shaft cylinder 622 is a curved surface. When the directional push plate 414 moves horizontally and contacts the curved surface of the engaging shaft cylinder 622, the engaging shaft cylinder 622 is pushed towards the winding roller 36, so that the engaging shaft cylinder 622 can form an engaging relationship with the mating shaft hole 361 on the winding roller 36. At the end of the directional push plate 414 away from the engaging shaft cylinder 622, a rotating plate 415 is movably arranged. At the end of the rotating plate 415 away from the directional push plate 414, a Z-shaped pressing plate 416 is movably arranged, and the Z-shaped pressing plate 416 is engaged and slid inside the engaging groove 411. On the connecting section of the whole Z-shaped pressing plate 416 and the rotating plate 415, an inclined surface is provided with the same inclination angle as the initial state of the rotating plate 415. The overall rotation of the rotating plate 415 is limited by this inclined surface to prevent the rotating plate 415 from rotating excessively. Due to the engaging and sliding relationship formed by the Z-shaped pressing plate 416 and the engaging groove 411, when the limiting slider 44 drives the steel cable 5 to displace and wind up, both the limiting slider 44 and the steel cable 5 can exert extrusion and push on the Z-shaped pressing plate 416. When the Z-shaped pressing plate 416 undergoes displacement, the rotating plate 415 movably arranged thereon will rotate, thereby pushing the directional push plate 414 to displace. After the winding roller 36 winds up one layer of the steel cable 5, the provided first half-ring cylinder 64 can contract inward to form a new winding layer. A second spring 417 is sleeved outside the sliding rod 413, and a part of the second spring 417 is placed inside the cavity of the directional push plate 414. The second spring 417 is used to drive the directional push plate 414 and the Z-shaped pressing plate 416 to reset after the Z-shaped pressing plate 416 is no longer extruded by the steel cable 5 and the limiting slider 44.

[0042] During use, after the Z-shaped pressing plate 416 is pressed, the Z-shaped pressing plate 416 will drive the rotating plate 415 to start rotating. During the rotation of the rotating plate 415, the directional pushing plate 414 is pushed to move, so that the engaging shaft cylinder 622 provided on the contraction plate 62 is inserted into the mating shaft hole 361, enabling the contraction plate 62 to rotate following the winding roller 36. Under the rotation of the contraction plate 62, the two first semi-ring cylinders 64 provided are contracted inward, allowing the subsequent steel cable 5 to reach a new winding layer through the inlet formed on the first semi-ring cylinder 64, thus preventing the steel cables 5 from being stacked and pressed against each other, causing wear to the steel cables 5 and affecting the overall service life of the steel cables 5. After the limit slider 44 and the steel cable 5 gradually separate from the contact with the Z-shaped pressing plate 416, the directional pushing plate 414 will reset under the action of the second spring 417. Since the first semi-ring cylinder 64 is covered by the steel cable 5, the first semi-ring cylinder 64 will not reset. When the entire steel cable 5 wound around the outside of the first semi-ring cylinder 64 is pulled out, the first semi-ring cylinder 64 will reset under the elastic force of the first spring 363 provided on one side of the annular abutting plate 364.

[0043] The remaining structures are the same as those in Embodiment 1. Embodiment 3

[0044] Please refer to Figures 1 to 15 , which is the third embodiment of the present invention. The difference between this embodiment and the first and second embodiments is: The second closing component 7 includes a semi-circular limiting plate 71 arranged inside the protective sleeve 41 on the side away from the support splint 63. A rotating disc 72 is movably arranged on the semi-circular limiting plate 71, and there is a clamping and sliding relationship between the rotating disc 72 and the semi-circular limiting plate 71. Under the overall limiting effect of the semi-circular limiting plate 71, the situation of the rotating disc 72 being deflected is avoided. Symmetric linear square grooves 721 are formed on the rotating disc 72. A square guide plate 73 is movably arranged inside the linear square grooves 721. One end of the square guide plate 73 away from the rotating disc 72 is provided with a second semi-circular cylinder 74. The second semi-circular cylinder 74 and the first semi-circular cylinder 64 are in a nested relationship. The central axis of the whole after the two semi-circular cylinders are spliced is the central axis of the winding roller 36. The second semi-circular cylinder 74 is clamped on the linear square grooves 721 of the rotating disc 72 through the square guide plate 73. By rotating the rotating disc 72, the two second semi-circular cylinders 74 are driven to rotate. An annular reverse tooth plate 75 is movably arranged on the side of the rotating disc 72 close to the second semi-circular cylinder 74. There is a clamping and rotating relationship between the annular reverse tooth plate 75 and the second semi-circular cylinder 74. Through the clamping contact between the annular reverse tooth plate 75 and the mating reverse tooth plate 641 arranged on the first semi-circular cylinder 64, the two second semi-circular cylinders 74 are driven to rotate when the mating reverse tooth plate 641 rotates. Elastic clamping blocks 76 are arranged in an array on the side of the annular reverse tooth plate 75 away from the second semi-circular cylinder 74. The elastic clamping blocks 76 are used to form a clamping and rotating relationship with the one-way ratchet groove 722 opened in the center of the rotating disc 72, so that when the mating reverse tooth plate 641 enters the inside of the annular reverse tooth plate 75, the whole annular reverse tooth plate 75 will move unidirectionally, so that the clamping formed by the whole mating reverse tooth plate 641 will not be blocked, and at the same time, the movement of the annular reverse tooth plate 75 will not affect the rotating disc 72.

[0045] A one-way ratchet groove 722 is formed through the rotating disc 72, and the one-way ratchet groove 722 forms a clamping and sliding with the elastic clamping block 76. The one-way ratchet groove 722 is used to limit the whole rotation direction of the rotating disc 72, and at the same time transfer the rotational force of the annular reverse tooth plate 75 to the rotating disc 72, so as to drive the second semi-circular cylinder 74 to rotate through the rotation of the rotating disc 72. Under the rotation of the second semi-circular cylinder 74, the wound steel cable 5 will enter the outside of the second semi-circular cylinder 74 through the entry hole opened on the second semi-circular cylinder 74. During the continuous winding process, the two second semi-circular cylinders 74 contract and are spliced into a whole. A mating reverse tooth plate 641 is movably arranged on the side of the first semi-circular cylinder 64 close to the rotating disc 72. The mating reverse tooth plate 641 forms a locking and clamping with the first semi-circular cylinder 64 through a plugging square rod. Due to the square shape of the rod body, the mating reverse tooth plate 641 can only move translationally and will not rotate randomly. At the same time, a spring is sleeved on the section of the plugging square rod inside the first semi-circular cylinder 64. Through the spring providing elastic force, the whole mating reverse tooth plate 641 is reset.

[0046] A L-shaped baffle 642 is arranged at one end of the mating reverse tooth plate 641 away from the rotating disk 72. The L-shaped baffle 642 is used to push and move the steel cable 5 on the first half-ring cylinder 64 during the winding process. Under the movement of the L-shaped baffle 642, the mating reverse tooth plate 641 and the annular reverse tooth plate 75 are brought into an engaged state. A pulling handle 418 is arranged on the protective sleeve 41. Both sides of the pulling handle 418 are in an inserted connection relationship with the grooves of the tension bearing frame 2. At the same time, after the insertion is completed, it is tightened and fixed by bolts to fix the entire protective sleeve 41, so as to prevent the protective sleeve 41 from falling out of the fixed base 1 during the tightening process by the operator.

[0047] When the steel cable 5 on the first half-ring cylinder 64 is about to be wound up, it will push the L-shaped baffle 642 to move, so that the arranged mating reverse tooth plate 641 gradually approaches the annular reverse tooth plate 75 and finally forms a tooth engagement state with the annular reverse tooth plate 75. After the engagement is completed, the rotation of the first half-ring cylinder 64 will drive the rotating disk 72 to start rotating, and at the same time, the rotating disk 72 will drive the second half-ring cylinder 74 to rotate synchronously. Under the rotation of the second half-ring cylinder 74, the steel cable 5 will enter the outside of the second half-ring cylinder 74 to form a new winding layer. Under the continuous winding of the steel cable 5, the second half-ring cylinders 74 are finally spliced together, ensuring that the wound steel cable 5 will not be squeezed by other segments of the steel cable 5 during the whole process.

[0048] The remaining structures are the same as those of Embodiments 1 and 2.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An overhead conductor constant tensioner, comprising a fixed base (1), characterized in that: A tension bearing frame (2) is arranged inside the fixed base (1), and a tightening assembly (3) is arranged inside the fixed base (1); The tightening assembly (3) comprises a rotating shaft (31) movably arranged on the tension bearing frame (2), a rotating ratchet (32) being arranged on the rotating shaft (31), an operating handle (33) being movably arranged on the rotating shaft (31), and a swing lock block being arranged on the operating handle (33), a sprocket (34) being arranged on the rotating shaft (31), a chain (35) being arranged on the outside of the sprocket (34) in meshing engagement, a winding roller (36) being movably arranged on the other end of the chain (35), and a sprocket (34) being arranged on the winding roller (36) to form a meshing transmission with the chain (35), and a cable arrangement assembly (4) being arranged on the winding roller (36); The cable arrangement assembly (4) comprises a protective sleeve (41) movably arranged on the tension bearing frame (2), a reciprocating screw rod (42) movably arranged on the protective sleeve (41), a conveying belt (43) being arranged at one end of the reciprocating screw rod (42) close to the chain (35), a limit slider (44) being movably arranged on the reciprocating screw rod (42), and a steel cable (5) being movably arranged inside the limit slider (44); By swinging the operating handle (33), the rotating ratchet wheel (32) and the rotating shaft (31) are driven to rotate. When the rotating shaft (31) rotates, the sprocket wheel (34) and the chain (35) are matched to drive the winding roller (36) to rotate. At the same time, the reciprocating screw rod (42) is rotated by the conveying belt (43). When the limit slider (44) provided on the reciprocating screw rod (42) moves, the steel cable (5) is driven to move synchronously so that the steel cable (5) is neatly arranged on the winding roller (36).

2. The overhead conductor constant tensioner according to claim 1, characterized in that: The rotating shaft (31) is provided with a one-way ratchet (311) in an array, the fixed base (1) is provided with a fixed support (11) in an array, the fixed support (11) is provided with a rotating block (312) in a movable array, and the rotating block (312) cooperates with the one-way ratchet (311), and a meshing group (313) is movably provided on a side of the fixed support (11) away from the rotating block (312), and the meshing group (313) is composed of an outer tooth ring and a rotating gear at the other end of each rotating block (312).

3. The overhead conductor constant tensioner according to claim 1, characterized in that: The tension bearing frame (2) is provided with a fixed rod (21) in an array, the fixed rod (21) is provided with an inlet guide wheel (22) movably, the limit slider (44) is provided with a ball array inside, the protective sleeve (41) is provided with a matching groove (411), the protective sleeve (41) is provided with a first closing component (6) movably, the protective sleeve (41) is provided with a second closing component (7) movably, and the second closing component (7) is in a nested relationship with the first closing component (6).

4. The overhead conductor constant tensioner according to claim 3, characterized in that: The first closing component (6) comprises a square holder (61) arranged inside the protective sleeve (41); a retractable plate (62) is movably arranged at one end of the square holder (61) away from the protective sleeve (41); an arc-shaped groove (621) is symmetrically provided on the retractable plate (62); a supporting clamp (63) is arranged inside the protective sleeve (41); the supporting clamp (63) is located on the side of the retractable plate (62) away from the winding roller (36); a first semi-annular cylinder (64) is symmetrically movably arranged on the supporting clamp (63); a positioning rod (65) is arranged on the side of the first semi-annular cylinder (64) close to the supporting clamp (63); and the positioning rod (65) is engaged and slidably engaged with the arc-shaped groove (621) and the supporting clamp (63).

5. The overhead conductor constant tensioner according to claim 4, characterized in that: A matching shaft hole (361) is provided on one side of the winding roller (36) close to the supporting clamp plate (63); a retractable rod (362) is movably arranged in an array on one side of the winding roller (36) close to the matching shaft hole (361); a first spring (363) is sleeved on the outside of the retractable rod (362); and an annular stop plate (364) is provided on one end of the retractable rod (362) away from the winding roller (36).

6. The overhead conductor constant tensioner according to claim 4, characterized in that: The shrinking plate (62) is provided with a locking shaft cylinder (622), and the locking shaft cylinder (622) and the winding roller (36) are located on the same central axis. The protective sleeve (41) is provided with a fixing plate (412) inside, and the fixing plate (412) is located on the side of the supporting clamping plate (63) away from the first semi-ring cylinder (64).

7. The overhead conductor constant tensioner according to claim 6, characterized in that: A sliding rod (413) is symmetrically arranged at one end of the fixed plate (412) away from the protective sleeve (41), a directional push plate (414) is movably arranged at one end of the sliding rod (413) away from the fixed plate (412), a rotating plate (415) is movably arranged at one end of the directional push plate (414) away from the engaging shaft cylinder (622), a Z-shaped extrusion plate (416) is movably arranged at one end of the rotating plate (415) away from the directional push plate (414), and the Z-shaped extrusion plate (416) is engaged and slidable inside the matching groove (411), and a second spring (417) is sleeved on the outside of the sliding rod (413), and a part of the second spring (417) is placed in the cavity of the directional push plate (414).

8. The overhead conductor constant tensioner according to claim 7, characterized in that: The second closing component (7) comprises a semi-ring stopper plate (71) arranged inside the protective sleeve (41) on a side away from the supporting clamping plate (63); a rotating disk (72) is movably arranged on the semi-ring stopper plate (71); a straight square groove (721) is symmetrically provided on the rotating disk (72); a square guide plate (73) is movably arranged inside the straight square groove (721); a second semi-ring cylinder (74) is arranged at one end of the square guide plate (73) away from the rotating disk (72); an annular reverse tooth plate (75) is movably arranged on a side of the rotating disk (72) close to the second semi-ring cylinder (74); and elastic blocks (76) are arranged in an array on a side of the annular reverse tooth plate (75) away from the second semi-ring cylinder (74).

9. The overhead conductor constant tensioner according to claim 8, characterized in that: The rotating disk (72) is provided with a one-way ratchet groove (722) which is engaged and slidable with the elastic clamping block (76). A matching reverse tooth plate (641) is movably provided on a side of the first semi-annular cylinder (64) close to the rotating disk (72).

10. An overhead conductor constant tensioner according to claim 9, characterized in that: An L-shaped baffle (642) is provided at one end of the mating reverse tooth plate (641) away from the rotating disk (72), and a pulling handle (418) is provided on the protective sleeve (41).

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