Electric tensioner for overhead transmission line

Abstract

The invention discloses an electric tension machine for an overhead transmission line, and relates to the technical field of overhead transmission line installation, the electric tension machine comprises a rack and a rotating shaft rotatably installed on the rack, a driven wheel is fixedly installed on the rotating shaft, a driving wheel is rotatably installed on the rack, and the driving wheel is driven by a driving gear to rotate; a shell is fixedly installed on the machine frame, two sets of resistance assemblies matched with each other are installed in the shell, each resistance assembly comprises a water pipe fixedly installed in the shell, and a rotating ring is rotationally installed on each water pipe. The power transmission line tension adjusting valve has the advantages that when power transmission line tension adjusting is carried out, resistance generated by flowing of water flow in the valve body is used for organizing rotation of the valve body so as to form resistance to a rotating shaft, mechanical abrasion generated in the process is small, the resistance is lasting, the service life is longer, meanwhile, resistance adjusting is more accurate due to small abrasion, and the service life of the power transmission line is prolonged. Therefore, the tension of the power transmission line can be better controlled.

Description

Technical Field

[0001] The invention relates to the technical field of overhead power transmission line installation, in particular to an overhead power transmission line electric tension machine. Background Art

[0002] Overhead transmission lines mainly refer to overhead open lines, which are erected above the ground. They use insulators to fix the transmission wires on pole towers erected on the ground to transmit electrical energy. Overhead transmission lines need to ensure that the tension of the transmission lines is controlled within a certain range to avoid line collapse. Therefore, when installing transmission lines, an electric tension machine is required to adjust the tension of the transmission lines.

[0003] There are many types of existing electric tension machines, among which the two-wheel electric tension machine is the most commonly used electric tension machine, which includes a driving wheel and a driven wheel, and changes the tension by adjusting the rotation speed. Publication No. CN116462051A discloses an electric tension machine device with adaptive tension control, which includes a support assembly for installing and supporting each component, the support assembly is fixed in the working position by a set support block, and the support assembly is provided with an adjustment assembly for adjusting the tension of the tension machine, and the adjustment assembly is provided with a control assembly for controlling the adjustment assembly according to the state of the wire.

[0004] The tension machine automatically adjusts the tension of the tension machine according to the state of the conductor, thereby increasing the speed of tension adjustment, preventing the conductor from being damaged, loosened or broken during the installation process, and improving the safety and efficiency of the construction.

[0005] The driven wheel in the above-mentioned tension machine and the existing tension machine is driven by the friction between the power transmission line and the driven wheel. Since the driven wheel is heavy, it will have a certain amount of inertia when rotating at high speed. When the driving wheel stops, the driven wheel will continue to rotate under the action of its own inertia, which will cause the power transmission line to be entangled. Therefore, the existing and the above-mentioned tension meters are equipped with a damper on the rotating shaft of the driven wheel to increase the friction between the rotating shaft and the frame, thereby offsetting the inertia, which can effectively prevent the driven wheel from continuing to rotate due to inertia. However, the damper is friction damping, and long-term use will cause wear of the damper, resulting in a reduction in the accuracy of the damper resistance adjustment, affecting the tension adjustment.

[0006] Therefore, a novel electric tension machine for overhead power transmission lines can be adopted to solve the shortcomings of the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problem in the prior art that mechanical damping wear leads to inaccurate damping adjustment, thereby affecting the tension adjustment of the transmission line, and to propose an overhead transmission line electric tension machine.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: An overhead power transmission line electric tension machine comprises a frame, and also comprises a rotating shaft rotatably mounted on the frame, a driven wheel is fixedly mounted on the rotating shaft, a driving wheel is rotatably mounted on the frame, and the driving wheel is driven to rotate by a driving gear; The frame is fixedly mounted with a shell, and two sets of resistance components cooperating with each other are installed in the shell. The resistance components include a water pipe fixedly mounted in the shell, a rotating ring is rotatably mounted on the water pipe, and a mounting ring is fixedly mounted on the rotating shaft. The mounting ring and the rotating ring are fixedly connected, and a blocking mechanism cooperating with the two water pipes is installed on the shell; The valve body is fixedly mounted on the rotating ring, a rotating shaft is rotatably mounted in the valve body, a rotating ball matched with the valve body is fixedly mounted on the rotating shaft, a driving mechanism and a locking mechanism matched with the rotating shaft are mounted in the outer shell, and two electromagnetic rings are fixedly mounted on the outer shell.

[0009] Preferably, a control cabinet is fixedly mounted on the frame for automatically controlling the operation of electrical components in the tension machine, a protective cover and a heat dissipation cabinet are fixedly mounted on the frame, the protective cover is located outside the outer shell, and the heat dissipation cabinet is used to dissipate heat from the outer shell.

[0010] Preferably, a reeling guide cooperating with the driven wheel is slidably mounted on the frame, and a reeling guide cooperating with the driving wheel is slidably mounted on the frame, which are used to guide the transmission line and ensure that the transmission line fits the driving wheel and the driven wheel.

[0011] Preferably, the sealing mechanism includes a connecting box fixedly mounted on the corresponding water pipe, the two connecting boxes are in opposite directions, the two water pipes are provided with a through hole matching the corresponding connecting box, and the two connecting boxes are slidably installed with a sealing plate matching the corresponding water pipe, the two sealing plates are located on the same horizontal line, and a movable structure is installed between the outer shell and the two sealing plates.

[0012] Preferably, the movable structure includes a connecting frame fixedly mounted on the corresponding sealing plate, the two connecting boxes are each provided with a groove body matching the corresponding connecting frame, a first rack is fixedly mounted between the two connecting frames, a first motor is fixedly mounted on the outer casing, and a first gear disk meshing with the first rack is fixedly mounted on the driving end of the first motor.

[0013] Preferably, the driving mechanism includes a fixed frame fixedly mounted on a rotating ring, a second rack is slidably mounted on the fixed frame, a reset spring is fixedly mounted between the second rack and the fixed frame, a first magnetic block matching with a corresponding electromagnetic ring is mounted on the second rack through a delay structure, and a second gear disk meshing with the second rack is fixedly mounted on the rotating shaft.

[0014] Preferably, the delay structure includes a plate body fixedly mounted on the second rack, a plurality of delay springs fixedly mounted on the plate body, an end of the plurality of delay springs away from the plate body being fixedly connected to the first magnetic block, a telescopic rod fixedly mounted on the plate body, and a telescopic end of the telescopic rod being fixedly connected to the first magnetic block.

[0015] Preferably, the locking mechanism includes a friction ring fixedly mounted on a rotating shaft, a fixed block fixedly mounted on the rotating ring, two elastic telescopic rods fixedly mounted on the fixed block, a connecting block fixedly mounted on the telescopic ends of the two elastic telescopic rods, two groups of pull rods rotatably mounted on the connecting block through an axle, each group of pull rods consists of two pull rods, a friction plate matched with the friction ring is commonly mounted between the two groups of pull rods, the friction plate and each pull rod are rotatably connected, a limiting structure matched with the axle is mounted on the fixed block, and a loosening structure matched with the connecting block is mounted on the fixed block.

[0016] Preferably, the limiting structure comprises a slide rail fixedly mounted on the fixed block, a slide block is slidably mounted on the slide rail, and the slide block is rotationally connected to the shaft body.

[0017] Preferably, the loosening structure includes two rollers, and the two retracing rollers are rotatably mounted on a fixed block and a connecting block respectively. A connecting rod is slidably mounted on the fixed block, and a second magnetic block matching the corresponding electromagnetic ring is fixedly mounted on the connecting rod. Two wedge blocks matching the two rollers are fixedly mounted on one end of the connecting rod away from the second magnetic block.

[0018] Compared with the prior art, the present invention has the following advantages: 1. When adjusting the tension of the transmission line, the tension machine controls the water flow rate of the valve body by adjusting the angle of the rotating ball in the valve body. The valve body rotates with the rotating shaft. The valve body rotates in the water pipe. The water in the water pipe will produce resistance to the valve body. The change of water flow rate changes the size of the resistance, thereby resisting the rotating shaft to prevent rotation. The resistance is the resistance between water and the valve body, so it will not produce large mechanical rotation friction. This resistance adjustment has a longer service life and stable adjustment accuracy.

[0019] 2. When adjusting the tension of the transmission line, the tension machine blocks the water in the water pipe by setting a blocking mechanism to prevent the rotation of the valve body from driving the water in the water pipe to rotate, ensuring that the water always produces resistance to the valve body. At the same time, it can also effectively reduce the probability of turbulence in the water pipe, making the water flow through the valve body more stable, thereby making the resistance adjustment more precise.

[0020] 3. When adjusting the tension of the transmission line, the tension machine drives the rotating ball to rotate by setting an electromagnetic ring and a first magnetic block to control the water flow in the rotating ball, and then locks the rotating ball through a locking mechanism. Under the action of the delay structure, the locking mechanism operates before the driving mechanism, so that the locking mechanism locks the rotating ball after each rotation of the rotating ball, thereby improving the stability of the rotating ball during operation, thereby improving the stability of the flow, thereby improving the accuracy of resistance adjustment.

[0021] To summarize, when adjusting the tension of a transmission line, the present invention utilizes the resistance generated by the flow of water in the valve body to organize the rotation of the valve body, thereby forming resistance to the rotating shaft. Less mechanical wear is generated in the process, making the resistance lasting and the service life longer. At the same time, less wear makes the resistance adjustment more precise, thereby better controlling the tension of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein: Figure 1 A schematic diagram of the structure of an electric tension machine for overhead power transmission lines proposed by the present invention; Figure 2 for Figure 1 Detailed schematic diagram of the structure after being rotated to a certain angle; Figure 3 for Figure 2 Detailed schematic diagram of the structure after being rotated to a certain angle; Figure 4 for Figure 3 A detailed diagram of the enlarged structure of the driven wheel; Figure 5 for Figure 4 Detailed schematic diagram of the structure after being rotated to a certain angle; Figure 6 for Figure 5 A detailed structural diagram after removing the driven wheel and the cover body; Figure 7 for Figure 6 A detailed schematic diagram of the structure after the housing 11 is removed and rotated to a certain angle; Figure 8 for Figure 7 A schematic detailed view of the plan structure along one of the angles; Fig. 9 for Figure 8 A detailed diagram of the three-dimensional structure of the water pipe after it is cut along AA and rotated at a certain angle; Fig.10 for Fig. 9 A detailed schematic diagram of the enlarged structure of the middle plugging mechanism; Fig.11 for Fig. 9 A schematic diagram of the enlarged structure of the water pipe, rotating ring and mounting ring after the middle section is opened; Fig.12 for Fig. 9 The enlarged structural schematic detailed diagram after removing the rotating shaft, the blocking mechanism and the water pipe; Fig.13 for Fig.12 A detailed schematic diagram of the structure of one set of resistance components after being rotated to a certain angle; Fig.14 for Fig.13 Detailed schematic diagram of the structure after the valve body and electromagnetic ring are removed and rotated to a certain angle; Fig.15 for Fig.14 A detailed schematic diagram of the enlarged structure of the middle drive mechanism and the rotating shaft; Fig.16 for Fig.15 An enlarged structural schematic detailed diagram of the middle locking mechanism; Fig.17 for Fig.16 Detailed schematic diagram of the structure after removing the rotating shaft; Fig.18 for Fig.17 Detailed schematic diagram of the enlarged structure of part B.

[0023] In the figure: 1 frame, 2 driven wheel, 3 driving wheel, 4 winding guide, 5 unwinding guide, 6 control cabinet, 7 heat dissipation cabinet, 8 protective cover, 9 driving gear, 10 rotating shaft, 11 shell, 12 first motor, 13 water pipe, 14 electromagnetic ring, 15 first rack, 16 first toothed disc, 17 rotating ring, 18 connecting box, 19 blocking plate, 20 connecting frame, 21 wedge block, 22 mounting ring, 23 valve body, 24 rotating ball, 25 driving mechanism, 26 rotating shaft, 27 second toothed disc, 28 second rack, 29 reset spring, 30 fixed frame, 31 plate body, 32 first magnetic block, 33 delay spring, 34 second magnetic block, 35 friction ring, 36 friction plate, 37 pull rod, 38 connecting rod, 39 fixed block, 40 connecting block, 41 elastic telescopic rod, 42 roller, 43 slide rail, 44 sliding block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: Reference Figure 1-Figure 3 An overhead power transmission line electric tension machine includes a frame 1, and also includes a rotating shaft 10 rotatably mounted on the frame 1, a driven wheel 2 is fixedly mounted on the rotating shaft 10, a driving wheel 3 is rotatably mounted on the frame 1, and the driving wheel 3 is driven to rotate through a driving gear 9.

[0026] A gear ring meshing with the driving gear 9 is fixedly mounted on the driving wheel 3, and a second motor is fixedly mounted on the frame 1. The driving end of the second motor is fixedly connected to the driving gear 9. The rotation of the driving end of the second motor drives the driving gear 9 to rotate, and the driving gear 9 drives the gear ring meshing with it to rotate, thereby driving the driving wheel 3 to rotate.

[0027] A control cabinet 6 is fixedly mounted on the frame 1 for automatically controlling the operation of electrical components in the tension machine. A protective cover 8 and a heat dissipation cabinet 7 are fixedly mounted on the frame 1. The protective cover 8 is located outside the housing 11. The heat dissipation cabinet 7 is used to dissipate heat from the housing 11.

[0028] A rewinding guide 5 cooperating with the driven wheel 2 is slidably mounted on the frame 1, and a rewinding guide 4 cooperating with the driving wheel 3 is slidably mounted on the frame 1, which is used to guide the transmission line to ensure that the transmission line fits with the driving wheel 3 and the driven wheel 2.

[0029] Grooves are provided on the driving wheel 3 and the driven wheel 2, and rubber sheets are fixedly installed in the grooves to increase the friction between the driving wheel 3 and the driven wheel 2 to ensure that the driving wheel 2 can be driven by the transmission line to rotate.

[0030] The rolled transmission line passes through the winding guide 4, then bypasses the driving wheel 3 and the driven wheel 2 and passes through the unwinding guide 5. The end of the transmission line needs to be connected to a traction device to pull the transmission line to move and keep the transmission line tension constant. The traction speed is consistent with the driving speed of the driving wheel 3. The rotation of the driving wheel 3 will drive the driven wheel 2 to rotate through the transmission line. The tension of the transmission line is adjusted by the resistance between the driven wheel 2 and the frame 1. The faster the speed of the driving wheel 3, the greater the tension, and vice versa.

[0031] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1 , Figure 4-Figure 13A shell 11 is fixedly mounted on the frame 1, and two sets of resistance components that cooperate with each other are installed in the shell 11. The resistance components include a water pipe 13 fixedly mounted in the shell 11, a rotating ring 17 is rotatably mounted on the water pipe 13, a mounting ring 22 is fixedly mounted on the rotating shaft 10, and the mounting ring 22 is fixedly connected to the rotating ring 17. A blocking mechanism that cooperates with the two water pipes 13 is installed on the shell 11, and a valve body 23 is fixedly mounted on the rotating ring 17.

[0032] The rotation of the driven wheel 2 drives the rotating shaft 10 to rotate. The rotation of the rotating shaft 10 drives the rotating ring 17 to rotate through the mounting ring 22. The rotation of the rotating ring 17 drives the valve body 23 fixedly connected thereto to rotate in the water pipe 13. The water in the water pipe 13 generates resistance to the valve body 23, so that the rotating shaft 10 forms a damping to offset the inertia of the rotation of the driven wheel 2. Since the water pipe 13 is annular, the rotation of the valve body 23 in the water pipe 13 will drive the water in the water pipe 13 to rotate. When the valve body 23 just starts to rotate, the water in the water pipe 13 is stationary, so the resistance to the valve body 23 is the largest. As the valve body 23 continues to rotate, the water in the water pipe 13 will be driven to rotate together with the valve body 23. At this time, the resistance generated by the water to the valve body 23 gradually decreases until the rotation speed of the valve body 23 is consistent with that of the water, and the resistance is reduced to zero. In order to prevent the water from rotating with the valve body 23, two sets of resistance components are used here to cooperate and operate intermittently to maintain the stability of the water in the water pipe 13.

[0033] The sealing mechanism includes a connection box 18 fixedly installed on the corresponding water pipe 13, the two connection boxes 18 are in opposite directions, and the two water pipes 13 are provided with a through hole that matches the corresponding connection box 18. A sealing plate 19 that matches the corresponding water pipe 13 is slidably installed in the two connection boxes 18. The two sealing plates 19 are located on the same horizontal line, and a movable structure is installed between the outer shell 11 and the two sealing plates 19.

[0034] like Fig.12 As shown, the arc between the upper part of the valve body 23 on the two resistance components and the center point of the mounting ring 22 is less than 180 degrees. The purpose of this design is to make the upper part of the left valve body 23 (the left valve body 23 is Fig.12 When the valve body 23 (marked with 23) and the corresponding blocking plate 19 are about to touch each other, the upper part of the right valve body 23 just exceeds the position of the corresponding blocking plate 19.

[0035] Specific operation: when the left blocking plate 19 blocks the corresponding water pipe 13, the left valve body 23 is located above the left blocking plate 19, and the right blocking plate 19 is retracted into the corresponding connection box 18. The water in the other water pipe 13 will rotate with the rotation of the valve body 23 without the obstruction of the blocking plate 19, while the left blocking plate 19 will prevent the water in the corresponding water pipe 13 from rotating with the valve body 23. At this time, the left valve body 23 plays a role of generating resistance; When the valve body 23 on the left rotates a circle, it will collide with the corresponding blocking plate 19. When the collision is about to occur, the left blocking plate 19 will retract into the corresponding connection box 18, and the right valve body 23 will just exceed the position of the corresponding blocking plate 19. At this time, the right blocking plate 19 can just be closed. At this time, the blocking plate 19 in the left water pipe 13 is in the open state, and the blocking plate 19 in the right water pipe 13 is in the closed state. The right valve body 23 will be subject to the resistance of the water in the right water pipe 13. Then, when the valve body 23 on the left side completely exceeds the corresponding blocking plate 19, the blocking plate 19 on the right side opens and the blocking plate 19 on the left side closes (the valve body 23 on the left side is the main resistance valve body 23, and the valve body 23 on the right side is the auxiliary valve body 23, which is used to assist the valve body 23 on the left side to pass through the corresponding blocking plate 19).

[0036] The movable structure includes a connecting frame 20 fixedly mounted on the corresponding blocking plate 19, and the two connecting boxes 18 are each provided with a groove body matching the corresponding connecting frame 20. A first rack 15 is fixedly mounted between the two connecting frames 20, a first motor 12 is fixedly mounted on the outer casing 11, and a first gear disc 16 meshing with the first rack 15 is fixedly mounted on the driving end of the first motor 12.

[0037] The rotation of the driving end of the first motor 12 will drive the first gear plate 16 fixedly connected thereto to rotate, thereby driving the first rack 15 meshing with the first gear plate 16 to move. The movement of the first rack 15 will drive the two blocking plates 19 to move in the same direction at the same time through the connecting frame 20, thereby realizing intermittent opening and closing of the two water pipes 13.

[0038] Embodiment 3: This embodiment is different from the technical solution of Embodiment 2 in that: Figure 1-Figure 4 , Figure 12-Figure 18A rotating shaft 26 is rotatably installed in the valve body 23, and a rotating ball 24 matching the valve body 23 is fixedly installed on the rotating shaft 26. A drain hole is opened in the middle of the rotating ball 24. When the valve body 23 rotates, water in the water pipe 13 will flow through the drain hole. When the rotating ball 24 rotates, the opening size of the drain hole will change, thereby changing the resistance. A driving mechanism 25 matching the rotating shaft 26 and a locking mechanism are installed in the outer shell 11. Two electromagnetic rings 14 are fixedly installed on the outer shell 11. A tension detector matching the transmission line is installed on the frame 1. The tension detector will transmit the tension detection signal to the control cabinet 6, and then the suction force of the electromagnetic ring 14 is controlled by the control system in the control cabinet 6.

[0039] The driving mechanism 25 includes a fixed frame 30 fixedly mounted on the rotating ring 17, a second rack 28 is slidably mounted on the fixed frame 30, a reset spring 29 is fixedly mounted between the second rack 28 and the fixed frame 30, a first magnetic block 32 matching the corresponding electromagnetic ring 14 is mounted on the second rack 28 through a delay structure, and a second gear disc 27 meshing with the second rack 28 is fixedly mounted on the rotating shaft 26.

[0040] Since the surface of the transmission line is non-uniformly smooth, the tension will change in real time. At this time, the suction force of the electromagnetic ring 14 is controlled by the control system in the control cabinet 6. The suction force between the electromagnetic ring 14 and the first magnetic block 32 changes, which will drive the second rack 28 to move through the delay structure. The movement of the second rack 28 drives the second gear plate 27 meshing therewith to rotate, thereby driving the rotating shaft 26 to rotate, and the rotating shaft 26 drives the rotating ball 24 to rotate, changing the opening size of the drain hole (when adjusting the tension, if the tension needs to be increased, the suction force between the electromagnetic ring 14 and the first magnetic block 32 is controlled to increase, and the deflection angle of the rotating ball 24 is increased. At this time, the opening of the drain hole on the rotating ball 24 is reduced, the water flow capacity of the rotating ball 24 is reduced, and the resistance of the valve body 23 is increased, thereby increasing the resistance of the rotating shaft 10); The function of the reset spring 29 is to reset the second rack 28 when the suction force between the electromagnetic ring 14 and the first magnetic block 32 decreases, thereby driving the rotating shaft 26 to reset and expand the opening size of the hydrophobic hole on the rotating ball 24.

[0041] The locking mechanism includes a friction ring 35 fixedly mounted on the rotating shaft 26, a fixed block 39 fixedly mounted on the rotating ring 17, two elastic telescopic rods 41 fixedly mounted on the fixed block 39, and a connecting block 40 fixedly mounted on the telescopic ends of the two elastic telescopic rods 41, two groups of pull rods are rotatably mounted on the connecting block 40 through the shaft, each group of pull rods is composed of two pull rods 37, a friction plate 36 matched with the friction ring 35 is commonly installed between the two groups of pull rods, the friction plate 36 and each pull rod 37 are rotatably connected, and a limiting structure matched with the shaft is installed on the fixed block 39; Since the blocking plate 19 shrinks in the connecting box 18, when the blocking plate 19 is retracted into the connecting box 18, the water pipe 13 is connected to the connecting box 18, and part of the water will enter the connecting box 18. Then, when the blocking plate 19 is extended, the water will be brought into the water pipe 13. Although the time is short, it will also generate moving turbulence, which will affect the stability of the water in the water pipe 13. At this time, a locking mechanism is used to lock the rotating shaft 26 on the rotating ball 24 to prevent the turbulence from affecting the rotating ball 24 (since the rotating ball 24 maintains balance by magnetic force and the elastic force of the return spring 29, once turbulence occurs, the balance of the rotating ball 24 will be destroyed, and the rotating ball 24 will deflect, so the locking mechanism can solve this problem well).

[0042] The elastic telescopic rod 41 is always in a stretched state, and the connecting block 40 is pulled to move by the elastic telescopic rod 41. The friction plate 36 is pulled under the action of the pull rod 37, and the upward friction plate 36 is always in contact with the friction ring 35, locking the rotating shaft 26 to maintain the stability of the rotating ball 24.

[0043] A loose structure that cooperates with the connecting block 40 is installed on the fixed block 39, and the loose structure includes two rollers 42. The two retracing rollers 42 are rotatably installed on the fixed block 39 and the connecting block 40 respectively. A connecting rod 38 is slidably installed on the fixed block 39, and a second magnetic block 34 that cooperates with the corresponding electromagnetic ring 14 is fixedly installed on the connecting rod 38. Two wedge blocks 21 that cooperate with the two rollers 42 are fixedly installed at one end of the connecting rod 38 away from the second magnetic block 34. The two wedge blocks 21 are symmetrically designed with the line connecting the two rollers 42 (the connecting rod 38 is an automatically retractable damping telescopic rod. At the moment when the magnetic force of the electromagnetic ring 14 changes, the damping has not yet responded. The second magnetic block 34 will drive the wedge block 21 to move through the connecting rod 38. When the damping responds after moving for a certain period of time, the wedge block 21 will be reset to a position in contact with the two rollers 42 under the pressure of the roller 42).

[0044] When the tension needs to be increased, the magnetic force between the electromagnetic ring 14 and the second magnetic block 34 increases (under the attraction of the electromagnetic ring 14 and the second magnetic block 34, the wedge block 21 will always be against the roller 42), which will cause the second magnetic block 34 to move closer to the side of the electromagnetic ring 14. The second magnetic block 34 will drive the wedge block 21 to move through the connecting rod 38, so that the wedge block 21 is inserted between the two rollers 42. At this time, the distance between the two rollers 42 increases, and the position of the roller 42 on the fixed block 39 remains unchanged, so the roller 42 on the connecting block 40 will drive the connecting block 40 to move together, so that the elastic telescopic rod 41 is stretched. At this time, the friction plate 36 is separated from the friction ring 35, and the rotating shaft 26 loses the locking of the friction ring 35 and the friction plate 36, and will rotate under the action of the driving mechanism 25.

[0045] The limiting structure includes a slide rail 43 fixedly mounted on a fixed block 39, a slide block 44 slidably mounted on the slide rail 43, and the slide block 44 is rotationally connected to the shaft body. The function of the slide block 44 and the slide rail 43 is to keep the shaft body moving in a straight line, so that the two groups of pull rods move synchronously, ensure that the two ends of the friction plate 36 move synchronously, and reduce the probability of the friction plate 36 offset.

[0046] The delay structure includes a plate body 31 fixedly mounted on the second rack 28, a plurality of delay springs 33 fixedly mounted on the plate body 31, an end of the plurality of delay springs 33 away from the plate body 31 is fixedly connected to the first magnetic block 32, a telescopic rod is fixedly mounted on the plate body 31, and a telescopic end of the telescopic rod is fixedly connected to the first magnetic block 32.

[0047] Due to the change in the magnetic force of the electromagnetic ring 14, the first magnetic block 32 and the second magnetic block 34 are affected at the same time, and the locking of the rotating shaft 26 needs to be unlocked before the driving mechanism 25 drives the rotating shaft 26 to rotate, and the rotating shaft 26 is locked before the driving mechanism 25 completes the driving adjustment. At this time, it is achieved through the delay structure. The change in the magnetic force of the electromagnetic ring 14 will drive the first magnetic block 32 to move, and a delay spring 33 is installed between the first magnetic block 32 and the plate body 31 (the delay spring 33 is an ordinary spring, and is named delay spring 33 for the purpose of distinguishing the description). Therefore, the movement of the second magnetic block 32 will not drive the plate body 31 to move at the first time, but will stretch the delay spring 31 to produce a certain delay effect. After the rotating shaft 26 is unlocked, the plate body 31 will move under the elastic force of the delay spring 33.

[0048] The specific operation steps of this device are as follows: The rolled transmission line passes through the winding guide 4, then bypasses the driving wheel 3 and the driven wheel 2 and passes through the unwinding guide 5. The end of the transmission line needs to be connected to a traction device to pull the transmission line to move and keep the tension of the transmission line constant. The traction speed is consistent with the driving speed of the driving wheel 3. The rotation of the driving wheel 3 will drive the driven wheel 2 to rotate through the transmission line. The tension of the transmission line is adjusted by the resistance between the driven wheel 2 and the frame 1. The faster the speed of the driving wheel 3, the greater the tension, and vice versa. The rotation of the driven wheel 2 drives the rotating shaft 10 to rotate, and the rotation of the rotating shaft 10 drives the rotating ring 17 to rotate through the mounting ring 22. The rotation of the rotating ring 17 drives the valve body 23 fixedly connected thereto to rotate in the water pipe 13. The water in the water pipe generates resistance to the valve body 23, so that the rotating shaft 10 forms a damping to offset the inertia of the rotation of the driven wheel 2. The rotation of the driving end of the first motor 12 will drive the first gear plate 16 fixedly connected thereto to rotate, thereby driving the first rack 15 meshing with the first gear plate 16 to move. The movement of the first rack 15 will drive the two blocking plates 19 to move in the same direction at the same time through the connecting frame 20, thereby realizing intermittent opening and closing of the two water pipes 13.

[0049] When the left blocking plate 19 blocks the corresponding water pipe 13, the left valve body 23 is located above the left blocking plate 19, and the right blocking plate 19 is retracted into the corresponding connection box 18. The water in the other water pipe 13 will rotate with the rotation of the valve body 23 without the obstruction of the blocking plate 19, while the left blocking plate 19 will prevent the water in the corresponding water pipe 13 from rotating with the valve body 23. At this time, the left valve body 23 plays a role in generating resistance. When the valve body 23 on the left rotates a circle, it will collide with the corresponding blocking plate 19. When the collision is about to occur, the left blocking plate 19 will retract into the corresponding connection box 18, and the right valve body 23 will just exceed the position of the corresponding blocking plate 19. At this time, the right blocking plate 19 can just be closed. At this time, the blocking plate 19 in the left water pipe 13 is in the open state, and the blocking plate 19 in the right water pipe 13 is in the closed state. The right valve body 23 will be subject to the resistance of the water in the right water pipe 13. Then, when the valve body 23 on the left side completely exceeds the corresponding blocking plate 19, the right blocking plate 19 is opened and the left blocking plate 19 is closed.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An overhead power transmission line electric tension machine, comprising a frame (1), characterized in that: It also includes a rotating shaft (10) rotatably mounted on the frame (1), a driven wheel (2) being fixedly mounted on the rotating shaft (10), a driving wheel (3) being rotatably mounted on the frame (1), and the driving wheel (3) being driven to rotate via a driving gear (9); A housing (11) is fixedly mounted on the frame (1), two groups of resistance components that cooperate with each other are mounted in the housing (11), the resistance components comprising a water pipe (13) fixedly mounted in the housing (11), a rotating ring (17) rotatably mounted on the water pipe (13), a mounting ring (22) fixedly mounted on the rotating shaft (10), the mounting ring (22) and the rotating ring (17) being fixedly connected, and a blocking mechanism that cooperates with the two water pipes (13) is mounted on the housing (11); A valve body (23) is fixedly mounted on the rotating ring (17), a rotating shaft (26) is rotatably mounted in the valve body (23), a rotating ball (24) matched with the valve body (23) is fixedly mounted on the rotating shaft (26), a driving mechanism (25) matched with the rotating shaft (26) and a locking mechanism are mounted in the housing (11), and two electromagnetic rings (14) are fixedly mounted on the housing (11).

2. The electric tension machine for overhead power transmission lines according to claim 1, characterized in that: A control cabinet (6) is fixedly mounted on the frame (1) for automatically controlling the operation of electrical components in the tension machine. A protective cover (8) and a heat dissipation cabinet (7) are fixedly mounted on the frame (1). The protective cover (8) is located outside the outer shell (11). The heat dissipation cabinet (7) is used to dissipate heat from the outer shell (11).

3. The electric tension machine for overhead power transmission lines according to claim 1, characterized in that: A reeling guide (5) cooperating with the driven wheel (2) is slidably mounted on the frame (1), and a reeling guide (4) cooperating with the driving wheel (3) is slidably mounted on the frame (1), for guiding the transmission line to ensure that the transmission line fits the driving wheel (3) and the driven wheel (2).

4. The electric tension machine for overhead power transmission lines according to claim 1, characterized in that: The blocking mechanism comprises a connection box (18) fixedly mounted on a corresponding water pipe (13), the two connection boxes (18) being in opposite directions, the two water pipes (13) being provided with a through hole matching the corresponding connection box (18), the two connection boxes (18) being slidably mounted with a blocking plate (19) matching the corresponding water pipe (13), the two blocking plates (19) being located on the same horizontal line, and a movable structure being mounted between the housing (11) and the two blocking plates (19).

5. The electric tension machine for overhead power transmission lines according to claim 4, characterized in that: The movable structure comprises a connecting frame (20) fixedly mounted on a corresponding blocking plate (19); a slot body matching the corresponding connecting frame (20) is provided on the two connecting boxes (18); a first rack (15) is fixedly mounted between the two connecting frames (20); a first motor (12) is fixedly mounted on the housing (11); and a first toothed disc (16) meshing with the first rack (15) is fixedly mounted on the driving end of the first motor (12).

6. The electric tension machine for overhead power transmission lines according to claim 1, characterized in that: The driving mechanism (25) comprises a fixing frame (30) fixedly mounted on a rotating ring (17); a second rack (28) is slidably mounted on the fixing frame (30); a return spring (29) is fixedly mounted between the second rack (28) and the fixing frame (30); a first magnetic block (32) matched with a corresponding electromagnetic ring (14) is mounted on the second rack (28) via a delay structure; and a second toothed disc (27) meshing with the second rack (28) is fixedly mounted on the rotating shaft (26).

7. The electric tension machine for overhead power transmission lines according to claim 6, characterized in that: The delay structure comprises a plate body (31) fixedly mounted on the second rack (28), a plurality of delay springs (33) fixedly mounted on the plate body (31), an end of the plurality of delay springs (33) away from the plate body (31) being fixedly connected to a first magnetic block (32), a telescopic rod fixedly mounted on the plate body (31), a telescopic end of the telescopic rod being fixedly connected to the first magnetic block (32).

8. The electric tension machine for overhead power transmission lines according to claim 1, characterized in that: The locking mechanism comprises a friction ring (35) fixedly mounted on a rotating shaft (26); a fixed block (39) fixedly mounted on the rotating ring (17); two elastic telescopic rods (41) fixedly mounted on the fixed block (39); a connecting block (40) fixedly mounted on the telescopic ends of the two elastic telescopic rods (41); two groups of pull rods rotatably mounted on the connecting block (40) via an axle; each group of pull rods is composed of two pull rods (37); a friction plate (36) matched with the friction ring (35) is commonly mounted between the two groups of pull rods; the friction plate (36) and each pull rod (37) are rotatably connected; a limiting structure matched with the axle is mounted on the fixed block (39); and a loosening structure matched with the connecting block (40) is mounted on the fixed block (39).

9. The electric tension machine for overhead power transmission lines according to claim 8, characterized in that: The limiting structure comprises a slide rail (43) fixedly mounted on a fixed block (39), a slide block (44) being slidably mounted on the slide rail (43), and the slide block (44) being rotationally connected to the shaft body.

10. The electric tension machine for overhead power transmission lines according to claim 8, characterized in that: The loosening structure comprises two rollers (42), the two retracing rollers (42) are rotatably mounted on a fixed block (39) and a connecting block (40) respectively, a connecting rod (38) is slidably mounted on the fixed block (39), a second magnetic block (34) matching with a corresponding electromagnetic ring (14) is fixedly mounted on the connecting rod (38), and two wedge blocks (21) matching with the two rollers (42) are fixedly mounted on one end of the connecting rod (38) away from the second magnetic block (34).

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