Pre-tightening device for high-voltage line of tower pole

Abstract

The invention discloses a pre-tightening device for a high-voltage line of a tower pole. The pre-tightening device comprises an extension plate and a pre-tightening mechanism, a butt joint plate is slidably connected to the upper surface of the extension plate, and a mounting box is fixedly connected to the upper end of the butt joint plate; the pre-tightening mechanism comprises rotating rods, middle eccentric wheels, connecting rods, a wire holding frame, a worm gear and a worm, the rotating rods are rotationally connected between the front inner wall and the rear inner wall of the mounting box in a bilateral symmetry mode, the outer arc surfaces of the two rotating rods are fixedly connected with the middle eccentric wheels which are evenly distributed, and the upper ends of the six middle eccentric wheels are fixedly connected with the connecting rods; the upper ends of every three connecting rods located on the same side are fixedly connected with one wire holding frame, frame rods of the two wire holding frames are distributed in a staggered mode, the rear end of the outer arc face of the rotating rod on the left side is fixedly connected with a worm gear, a worm is rotationally connected between the upper inner wall and the lower inner wall of the installation box, and the worm gear is connected with the worm in an engaged mode. The method has the characteristics of simplicity and convenience in operation, low cost and high stability.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage tower poles, in particular to a pre-tightening device for tower pole high-voltage lines. Background Art

[0002] High-voltage towers are tall structural facilities used to support high-voltage transmission lines. They play a vital role in the power transmission process. Before the installation of the tower high-voltage line, the pre-tightening structure is required to tighten the high-voltage line connection parts to ensure reliable line connection and safe operation. Common high-voltage line pre-tightening methods include bolt tightening, hydraulic pre-tightening and wedge-type wire clamp pre-tightening. For example, the pre-tightening of high-voltage lines on tower poles mainly adopts bolt tightening and wedge-type wire clamp pre-tightening. First of all, bolts and nuts of appropriate specifications must be selected. For high-voltage line connection hardware, the type of bolt is usually determined according to the design requirements and line voltage level, and appropriate tools (such as torque wrenches) are used to tighten according to the specified torque value. The size of the torque value depends on the specifications and materials of the bolts and the requirements of the connection parts; the wedge-type wire clamp pre-tightening method uses wedge-type wire clamps, which are usually used to fix high-voltage wires. During installation, first insert the wire into the wire slot of the wedge-type wire clamp to ensure that the wire fits tightly with the wire slot; The above two tower pole high-voltage line pre-tightening methods have some problems in actual operation. The bolts installed in a leaky environment are eroded by rain for a long time, causing the bolts themselves to rust and the torque value to decrease, resulting in a decrease in the pre-tightening force at the pre-tightening point. The wedge-shaped installation method is inconvenient and the subsequent disassembly and assembly operations are cumbersome. For this reason, we propose a pre-tightening device for tower pole high-voltage lines. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a pre-tightening device for a tower high-voltage line, which has the characteristics of simple operation, low cost and strong stability, and can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a pre-tightening device for a tower high-voltage line, comprising an extension plate and a pre-tightening mechanism; Extension plate: The upper surface of the extension plate is slidably connected with a docking plate, and the upper end of the docking plate is fixedly connected with a mounting box; Pretensioning mechanism: It includes a rotating rod, a middle eccentric wheel, a connecting rod, a wire holding frame, a worm wheel and a worm. The rotating rod is symmetrically rotated between the front and rear inner walls of the installation box. The outer arc surfaces of the two rotating rods are fixedly connected with evenly distributed middle eccentric wheels. The upper ends of the six middle eccentric wheels are fixedly connected with connecting rods. The upper ends of every three connecting rods on the same side are fixedly connected with a wire holding frame. The rack rods of the two wire holding frames are staggered. The rear end of the outer arc surface of the rotating rod on the left is fixedly connected with a worm wheel. The worm is rotatably connected between the upper and lower inner walls of the installation box. The worm wheel is meshingly connected with the worm. It has the characteristics of simple operation, low cost and strong stability.

[0005] Furthermore, the pre-tightening mechanism also includes a rotating rod side sealing plate, which is symmetrically fixed to the inside of the installation box in the front and back directions. The outer arc surfaces of the two rotating rods are rotatably connected to the two rotating rod side sealing plates to achieve the function of sealing the transmission parts.

[0006] Furthermore, the pre-tightening mechanism also includes a twist valve, which is fixedly connected to the upper end of the worm, and an external hexagonal head is fixedly connected to the middle of the upper surface of the twist valve to achieve the function of manually driven pre-tightening.

[0007] Furthermore, the pre-tightening mechanism also includes gears, which are fixedly connected to the outer arc-shaped front ends of the two rotating rods respectively, and the two gears are meshed and connected to realize the transmission function.

[0008] Furthermore, the left and right arc surfaces of the installation box are respectively provided with side avoidance grooves, and the interior of the side avoidance grooves is slidably connected to the outer surface of the connecting rod located on the same side, which has a connecting rod limiting effect.

[0009] Furthermore, the upper surface of the installation box is provided with evenly distributed bottom water leakage ports to prevent rainwater from remaining inside the device for a long time.

[0010] Furthermore, the right end of the extension plate is fixedly connected with a clamp, the upper side of the left side of the clamp is fixedly connected with a reinforcing rod, and the lower end of the reinforcing rod is fixedly connected to the right side of the upper surface of the extension plate, thereby realizing the function of installing the preload device on the tower pole.

[0011] Furthermore, evenly distributed rubber plates are fixedly connected to the inside of the two wire holding frames respectively, so as to realize the function of flexible contact with the high-voltage wire.

[0012] Furthermore, the upper surface of the extension plate and the upper surface of the docking plate are respectively provided with evenly distributed bolt holes to achieve the function of fixing the installation box.

[0013] Furthermore, longitudinal limit plates are symmetrically provided on the lower surface of the installation box, and the outer surfaces of the two longitudinal limit plates are slidably connected to the outer surface of an extension plate to achieve the function of stably changing the position of the installation box.

[0014] Compared with the prior art, the invention has the following beneficial effects: the pre-tightening device for the tower high-voltage line has the following advantages: 1. By installing the rotating rod side sealing plate and the bottom water leakage port fixed in the box, it is effectively prevented that rainwater slowly rusts the parts required for the pre-tightening structure. Compared with the traditional bolt fastening method, the service life of this pre-tightening device is longer.

[0015] 2. The self-locking characteristics of the worm gear and the gear transmission structure drive the two wire holding frames to move. The two wire holding frames are staggered and can quickly and flexibly clamp the high-voltage line to complete pre-tightening. It is easy to operate, low cost and strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a partial structural schematic diagram of the pre-tightening mechanism of the present invention; Figure 3 It is a structural schematic diagram of the pre-tightening mechanism of the present invention; Figure 4 It is a structural schematic diagram of the wire holding frame of the present invention.

[0017] In the figure: 1 extension plate, 2 docking plate, 3 installation box, 4 pre-tightening mechanism, 41 rotating rod side sealing plate, 42 rotating rod, 43 middle eccentric wheel, 44 connecting rod, 45 wire holding frame, 46 gear, 47 worm wheel, 48 worm, 49 twist valve, 5 rubber plate, 6 side avoidance groove, 7 bottom water leakage port, 8 clamp, 9 reinforcement rod. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 ,This embodiment provides a technical solution: a pre-tightening device for a tower high-voltage line, comprising an extension plate 1 and a pre-tightening mechanism 4; Extension plate 1: its upper surface is slidably connected with a docking plate 2, the upper end of the docking plate 2 is fixedly connected with an installation box 3, the upper surface of the installation box 3 is provided with evenly distributed bottom water leakage ports 7, the right end of the extension plate 1 is fixedly connected with a clamping hoop 8, the left side of the clamping hoop 8 is fixedly connected with a reinforcing rod 9, the lower end of the reinforcing rod 9 is fixedly connected to the right side of the upper surface of the extension plate 1, the upper surface of the extension plate 1 and the upper surface of the docking plate 2 are respectively provided with evenly distributed bolt openings, and the lower surface of the installation box 3 is symmetrically provided with longitudinal limit plates front and back, the outer surfaces of the two longitudinal limit plates are slidably connected with the outer surface of one extension plate 1, when the pre-tightening device needs to be used, the docking plate 2 is slid to the specified position, when the bolt opening on the extension plate 1 is aligned with the bolt opening on the docking plate 2, the bolts are screwed into the bolt openings in sequence, at this time, multiple installation boxes 3 can be installed according to the number of high-voltage lines on the tower pole, at this time, the entire pre-tightening device can be reversely installed on the tower pole through the clamping hoop 8; Preload mechanism 4: It includes a rotating rod 42, a middle eccentric wheel 43, a connecting rod 44, a wire holding frame 45, a worm wheel 47 and a worm 48. The rotating rod 42 is symmetrically rotated between the front and rear inner walls of the installation box 3. The outer arc surfaces of the two rotating rods 42 are fixedly connected with evenly distributed middle eccentric wheels 43. The upper ends of the six middle eccentric wheels 43 are fixedly connected with connecting rods 44. The upper ends of every three connecting rods 44 on the same side are fixedly connected with a wire holding frame 45. The rods of the two wire holding frames 45 are staggered. The outer arc surface of the rotating rod 42 on the left side A worm gear 47 is fixedly connected to the rear end, a worm 48 is rotatably connected between the upper and lower inner walls of the installation box 3, the worm gear 47 is meshed with the worm 48, the pre-tightening mechanism 4 also includes a rotating rod side sealing plate 41, the rotating rod side sealing plate 41 is symmetrically fixed to the inside of the installation box 3, the outer arc surfaces of the two rotating rods 42 are rotatably connected to the two rotating rod side sealing plates 41, the pre-tightening mechanism 4 also includes a twist valve 49, the twist valve 49 is fixedly connected to the upper end of the worm 48, the middle part of the upper surface of the twist valve 49 is fixedly connected to an external hexagonal head, and the pre-tightening mechanism 4 also includes The gears 46 are fixedly connected to the outer arc surface ends of the two rotating rods 42, and the two gears 46 are meshed and connected. The left and right arc surfaces of the installation box 3 are respectively provided with side avoidance grooves 6. The inside of the side avoidance grooves 6 is slidably connected to the outer surface of the connecting rod 44 on the same side. The insides of the two wire holding frames 45 are respectively fixedly connected with uniformly distributed rubber plates 5. At this time, the twist valve 49 can be twisted forward and reversely, thereby driving the worm 48 to rotate forward and reversely, and then driving the rear rotating rod 42 forward through the worm gear 47. It rotates in the opposite direction, and then drives the front rotating rod 42 to rotate in the forward and reverse directions through the two gears 46. The rotating rod 42 on the rear side rotates in the opposite direction to the rotating rod 42 on the front side. When the two rotating rods 42 rotate, it drives the wire holding frames 45 to open and close relatively. At this time, the two wire holding frames 45 are opened, and the high-voltage wire is placed in the two wire holding frames 45. Then the two wire holding frames 45 can be closed. At this time, twist the twist valve 49, and the two wire holding frames 45 are relatively close, so that the two wire holding frames 45 hold the high-voltage wire tightly, thereby realizing the function of tightening the high-voltage wire.

[0020] The working principle of a pre-tightening device for a tower high-voltage line provided by the present invention is as follows: when the pre-tightening device is needed, the docking plate 2 is slid to a specified position, and when the bolt openings on the extension plate 1 are aligned with the bolt openings on the docking plate 2, the bolts are screwed into the bolt openings in sequence. At this time, multiple installation boxes 3 can be installed according to the number of high-voltage lines on the tower. At this time, the entire pre-tightening device can be reversely installed on the tower through the clamp 8. At this time, the twist valve 49 can be twisted forward and reversely, thereby driving the worm 48 to rotate forward and reversely, and then driving the rear through the worm gear 47. The rotating rod 42 on the side rotates forward and reversely, and then drives the rotating rod 42 on the front side to rotate forward and reversely through the two gears 46. The rotating rod 42 on the rear side rotates in the opposite direction to the rotating rod 42 on the front side. When the two rotating rods 42 rotate, they drive the wire holding frames 45 to open and close relatively. At this time, the two wire holding frames 45 are opened, and the high-voltage wire is placed in the two wire holding frames 45. Then the two wire holding frames 45 can be closed. At this time, the twist valve 49 is twisted, and the two wire holding frames 45 are relatively close, so that the two wire holding frames 45 hold the high-voltage wire tightly, thereby realizing the function of tightening the high-voltage wire. It is worth noting that the clamp 8 disclosed in the above embodiments can be freely configured according to the actual application scenario. It is recommended to use the ZL-145-50ZL-200-50 tower cable clamp for the clamp 8.

[0021] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pre-tightening device for a tower high-voltage line, characterized in that: It comprises an extension plate (1) and a pre-tightening mechanism (4); Extension plate (1): the upper surface of which is slidably connected to a docking plate (2), and the upper end of the docking plate (2) is fixedly connected to a mounting box (3); A preload mechanism (4): comprising a rotating rod (42), a middle eccentric wheel (43), a connecting rod (44), a wire holding frame (45), a worm wheel (47) and a worm (48); the rotating rod (42) is symmetrically rotatably connected between the front and rear inner walls of the installation box (3); the outer arc surfaces of the two rotating rods (42) are fixedly connected to the evenly distributed middle eccentric wheels (43); the upper ends of the six middle eccentric wheels (43) are fixedly connected to the connecting rods (44); the upper ends of every three connecting rods (44) located on the same side are fixedly connected to a wire holding frame (45); the frame rods of the two wire holding frames (45) are staggered; the rear end of the outer arc surface of the rotating rod (42) on the left side is fixedly connected to the worm wheel (47); the worm wheel (48) is rotatably connected between the upper and lower inner walls of the installation box (3); the worm wheel (47) is meshingly connected to the worm wheel (48).

2. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The pre-tightening mechanism (4) further comprises a rotating rod side sealing plate (41), wherein the rotating rod side sealing plate (41) is fixedly connected to the interior of the installation box (3) in a front-to-back symmetrical manner, and the outer arc surfaces of the two rotating rods (42) are both rotatably connected to the two rotating rod side sealing plates (41).

3. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The pre-tightening mechanism (4) further comprises a twist valve (49), wherein the twist valve (49) is fixedly connected to the upper end of the worm (48), and an external hexagonal head is fixedly connected to the middle portion of the upper surface of the twist valve (49).

4. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The pre-tightening mechanism (4) further comprises a gear (46), wherein the gear (46) is respectively fixedly connected to the outer arc-shaped front ends of the two rotating rods (42), and the two gears (46) are meshingly connected.

5. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The left and right arc surfaces of the installation box (3) are respectively provided with side avoidance grooves (6), and the interior of the side avoidance grooves (6) is slidably connected to the outer surface of the connecting rod (44) located on the same side.

6. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The upper surface of the installation box (3) is provided with evenly distributed bottom water leakage openings (7).

7. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The right end of the extension plate (1) is fixedly connected to a clamp (8), the upper side of the left side surface of the clamp (8) is fixedly connected to a reinforcing rod (9), and the lower end of the reinforcing rod (9) is fixedly connected to the right side of the upper surface of the extension plate (1).

8. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The two wire holding frames (45) are respectively fixedly connected with uniformly distributed rubber plates (5) inside.

9. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The upper surface of the extension plate (1) and the upper surface of the docking plate (2) are respectively provided with evenly distributed bolt openings.

10. A pre-tightening device for a tower high-voltage line according to claim 1, characterized in that: The lower surface of the installation box (3) is provided with longitudinal limit plates symmetrically arranged front and rearward, and the outer surfaces of the two longitudinal limit plates are both slidably connected to the outer surface of an extension plate (1).

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