Undercrossing line protector for power transmission line construction

Abstract

The utility model relates to the technical field of power transmission line construction, and discloses a power transmission line construction undercrossing line protector, which comprises a protection cylinder, a mounting plate fixedly connected to the top of the circumferential outer wall of the protection cylinder, a mounting box fixedly connected to the top of the mounting plate, and a cover plate fixedly connected to the top of the mounting box. A rotating shaft is rotatably connected to the face, opposite to the cover plate, of the mounting box, a worm gear is fixedly arranged on the outer wall of the rotating shaft, worms meshed with the worm gear are rotatably connected to the inner walls of the two sides of the mounting box, a supporting rod is rotatably connected to the top of the cover plate, the supporting rod and the rotating shaft are fixedly arranged, and a mounting frame is fixedly connected to the top of the supporting rod. The section of the mounting frame is a three-quarter circle, and a rotating rod is rotationally arranged on the inner wall of the mounting frame; according to the utility model, the supporting rod drives the mounting rack and the rotating rod to carry out angle adjustment, so that the angle of the rotating rod is adjusted, the rotating rod is kept vertical to the ground wire, and the friction force between the ground wire and the wire protection cylinder is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission line construction technical field, concretely is a kind of power transmission line construction under-crossing line wire protector. BACKGROUND

[0002] Power transmission line construction refers to the process of transmitting the power generated by power plants to various regions through the erection of power transmission lines in the power system. This construction service includes the design, construction, acceptance and maintenance of power transmission lines. During the construction process, the construction unit needs to select appropriate construction methods and materials according to the voltage level, line length and topography of the power transmission line, to ensure the safe and stable operation of the power transmission line. A kind of under-crossing line power transmission line is mainly used for the line section of power transmission and distribution line crossing railway, first-class and above highway and important power transmission channel section. In the maintenance work of power transmission line, it is often necessary to replace or remove the ground wire. During the removal process, the ground wire is easy to contact and rub with other types of lines, which may cause damage to other wires, resulting in economic loss and certain safety hazards. Therefore, a power transmission line construction under-crossing line wire protector is needed.

[0003] As disclosed in patent document CN207303832U, a power transmission line construction under-crossing line wire protector includes a wire protection cylinder, an entry line through slot is formed on the side wall of the wire protection cylinder, the entry line through slot is parallel to the axis of the wire protection cylinder, the entry line through slot penetrates both ends of the wire protection cylinder, the side wall of the wire protection cylinder is provided with a support plate at both ends, a roller is arranged between the two support plates, the axis of the roller is parallel to the axis of the wire protection cylinder, and the positions of the entry line through slot and the roller are symmetrical with respect to the axis of the wire protection cylinder. The wire protector of the utility model can effectively prevent the ground wire from directly contacting and rubbing with other types of lines during the replacement of overhead ground wire in the construction process of power transmission line, reduce the damage to the wire, reduce the economic loss, reduce the labor intensity, improve the maintenance efficiency, and has low cost, simple production, easy operation and promotion, which greatly reduces the construction cost. However, the existing technology still has many shortcomings, for example: when in use, the roller is used to reduce the friction between the ground wire and the wire protection cylinder. However, since the angle of the roller is fixed, the angle between the ground wire and the wire is not fixed at ninety degrees, which may cause the roller to rotate unevenly during the movement of the ground wire, and thus the friction-reducing effect cannot be achieved, which is not convenient to use. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of power transmission line construction under-crossing line wire protector to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides following technical scheme: a transmission line construction undercrossing line wire protector, including the wire protection cylinder, the top position fixedly connected with the circumference outer wall of wire protection cylinder has the mounting plate, the top fixedly connected with the mounting plate has the mounting box, the top fixedly connected with the mounting box has the cover plate, the opposite side of mounting box with The cover plate is rotatably connected with the rotating shaft, the outer wall of rotating shaft is fixedly provided with the worm wheel, the two side inner walls of mounting box are rotatably connected with the worm of engagement with worm wheel, the top rotatably connected with the support rod of cover plate, The support rod with between the rotating shaft is fixedly provided, the top fixedly connected with the mounting frame of support rod, the section of mounting frame is three quarters of circle, The inner wall of mounting frame rotatably provided with rotating rod.

[0006] As further improvement of the above scheme, the circumference inner wall of mounting frame is equidistantly opened with multiple installation grooves, the both ends inner wall of installation groove is rotatably connected with the rotating rod, the rotating rod with The rotating rod is in contact.

[0007] As further improvement of the above scheme, the circumference inner wall both ends of mounting frame are fixedly connected with the arc-shaped limit block, the circumference outer wall of rotating rod is opened with two limit slots corresponding with limit block, The limit block is located in the limit slot.

[0008] As further improvement of the above scheme, the wire protection cylinder includes the first half cylinder and the second half cylinder, the opposite side position of first half cylinder with The second half cylinder is hinged.

[0009] As further improvement of the above scheme, the circumference outer wall one side position of first half cylinder with The second half cylinder is fixedly connected with the connecting plate, the top of two connecting plates is opened with the threaded hole, the inner wall of two threaded holes is connected with the threaded rod through the thread.

[0010] As further improvement of the above scheme, the top of mounting plate is slidably provided with two support plates, the circumference outer wall bottom of two support plates with The mounting frame is fixedly connected.

[0011] As further improvement of the above scheme, the top of mounting plate is opened with the annular movement groove, and the inner wall of movement groove is slidably provided with two movement rods, two Movement rod is rotatably connected between two support plates respectively.

[0012] As further improvement of the above scheme, the outer wall of one end of mounting box is rotatably connected with knob, and the circumference outer wall of knob is opened with multiple anti-skid grooves, The knob with The fixed setting between worm 19.

[0013] Compared with prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses, through fixedly setting between support rod and rotation axis, the top fixed connection mounting bracket of support rod, the section of mounting bracket is three fourths circle, the inner wall rotation of mounting bracket sets up rotation rod, when using, first rotation knob, drives the rotation of worm through knob, worm drives the rotation of worm wheel, and then drives the rotation of rotation axis, and rotation axis will drive support rod to rotate when rotating, and the angle of mounting bracket and rotation rod is adjusted through support rod drive, and then the angle of rotation rod is adjusted, makes it and ground wire keep perpendicular state, reduces the friction between ground wire and wire protection cylinder, through the self -locking structure of worm wheel and worm, prevents rotation rod from rotating when receiving the friction of ground wire, through the speed of rotation rod when angle adjustment can be reduced through the speed reduction effect of worm wheel and worm, increases the accuracy of rotation rod angle adjustment.

[0015] The utility model discloses, through the equidistance of mounting bracket's circumference inner wall sets up multiple installation groove, the both ends inner wall rotation of installation groove connects the rotation of rod, through rotation rod, the sliding friction between mounting bracket and rotation rod is changed into rolling friction, thereby reduces the friction between rotation rod and mounting bracket, and the rotation of rod is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the exploded three-dimensional structure schematic diagram of rotation rod and mounting bracket of the utility model;

[0019] Figure 3 It is the utility model Figure 2 The enlarged structure schematic diagram of A in the utility model;

[0020] Figure 4 It is the exploded three-dimensional structure schematic diagram of mobile slot and mobile rod in the utility model;

[0021] Figure 5 It is the three-dimensional structure schematic diagram of worm wheel and worm in the utility model.

[0022] In the figure: 1, the wire protection cylinder; 101, the first half cylinder; 102, the second half cylinder; 2, the connecting plate; 3, the threaded hole; 4, the threaded rod; 5, the mounting plate; 6, the rotating rod; 7, the limiting groove; 8, the mounting box; 9, the mounting frame; 10, the limiting block; 11, the mounting groove; 12, the rotating rod; 13, the moving groove; 14, the moving rod; 15, the supporting plate; 16, the cover plate; 17, the rotating shaft; 18, the worm wheel; 19, the worm; 20, the knob; 21, the anti-skid groove; 22, the supporting rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. Embodiment 1

[0024] A power transmission line construction under-crossing line wire protector, as shown in Figure 1 , Figure 2 and Figure 5 , comprises a wire protection cylinder 1, the top position of the circumferential outer wall of the wire protection cylinder 1 is connected with a mounting plate 5 through bolts, the top of the mounting plate 5 is connected with a mounting box 8 through bolts, the top of the mounting box 8 is connected with a cover plate 16 through bolts, the opposite side of the mounting box 8 and the cover plate 16 is rotationally connected with a rotating shaft 17, the outer wall of the rotating shaft 17 is fixedly provided with a worm wheel 18, the two side inner walls of the mounting box 8 are rotationally connected with a worm 19 engaged with the worm wheel 18, the top of the cover plate 16 is rotationally connected with a supporting rod 22, the supporting rod 22 and the rotating shaft 17 are fixedly provided, the top of the supporting rod 22 is connected with a mounting frame 9 through bolts, the cross section of the mounting frame 9 is three-quarters of a circle, the inner wall of the mounting frame 9 is rotationally provided with a rotating rod 6, one end of the outer wall of the mounting box 8 is rotationally connected with a knob 20, a plurality of anti-skid grooves 21 are formed in the circumferential outer wall of the knob 20, the knob 20 and the worm 19 are fixedly provided, the knob 20 and the anti-skid grooves 21 facilitate the rotation of the worm 19.

[0025] As shown in Figure 1 , the wire protection cylinder 1 comprises a first half cylinder 101 and a second half cylinder 102, the opposite side of the first half cylinder 101 and the second half cylinder 102 is hinged, the hinged first half cylinder 101 and the second half cylinder 102 facilitate the opening of the wire protection cylinder 1 for the installation of the electric wire; the circumferential outer wall of the first half cylinder 101 and the second half cylinder 102 is connected with a connecting plate 2 through bolts at one side position, the top of the two connecting plates 2 is provided with a threaded hole 3, the inner wall of the two threaded holes 3 is connected with a threaded rod 4 through threads, the threaded rod 4 and the connecting plate 2 facilitate the fixation of the first half cylinder 101 and the second half cylinder 102.

[0026] As Figure 4 shown, the top of the mounting plate 5 is slidably provided with two support plates 15, which are bolted to the bottom of the circumferential outer wall of the mounting frame 9. The support plates 15 support the mounting frame 9 and increase the stability of the mounting frame 9. The top of the mounting plate 5 is provided with a ring-shaped moving groove 13, and the inner wall of the moving groove 13 is slidably provided with two moving rods 14. The two moving rods 14 are rotatably connected between the two support plates 15. The moving groove 13 and the rotating moving rods 14 allow the support plates 15 to slide on the mounting plate 5. At the same time, the rotating moving rods 14 reduce the friction between the moving rods 14 and the moving groove 13.

[0027] In use, the threaded rod 4 is first disassembled, the wires are installed in the wire protection cylinder 1, the first half cylinder 101 and the second half cylinder 102 are closed, the wire protection cylinder 1 is closed again by the threaded rod 4, then the knob 20 is rotated to drive the worm 19 to rotate, the worm 19 drives the worm gear 18 to rotate, and then drives the rotating shaft 17 to rotate. When the rotating shaft 17 rotates, it drives the support rod 22 to rotate, which drives the mounting frame 9 and the rotating rod 6 to adjust the angle, thereby adjusting the angle of the rotating rod 6 to keep it perpendicular to the ground wire, reducing the friction between the ground wire and the wire protection cylinder 1. The self-locking structure of the worm gear 18 and the worm 19 prevents the rotating rod 6 from rotating when it is subjected to the friction of the ground wire. The speed reduction effect of the worm gear 18 and the worm 19 can reduce the speed of the rotating rod 6 during angle adjustment, increasing the accuracy of angle adjustment of the rotating rod 6. Example 2

[0028] As shown in Figure 2 and Figure 3 , the circumferential inner wall of the mounting frame 9 is equidistantly provided with a plurality of mounting grooves 11, and the two ends of the mounting grooves 11 are rotatably connected with the rotating rods 12, which are in contact with the rotating rod 6. The circumferential inner wall of the mounting frame 9 is bolted to the arc-shaped limiting blocks 10 at both ends, and the circumferential outer wall of the rotating rod 6 is provided with two limiting grooves 7 corresponding to the limiting blocks 10. The limiting blocks 10 are located in the limiting grooves 7, which limit the rotating rod 6 and prevent it from disengaging from the mounting frame 9.

[0029] When the example 2 is in operation, the sliding friction between the mounting frame 9 and the rotating rod 6 is converted into rolling friction by the rotating rods 12, thereby reducing the friction between the rotating rod 6 and the mounting frame 9, facilitating the rotation of the rotating rod 6.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire protector for use in the construction of an electric power transmission line under a pre-existing overhead line, comprising a wire protecting tube (1), characterised in that: The outer wall of the circumference of the wire protection cylinder (1) is fixedly connected with a mounting plate (5) at the top, the top of the mounting plate (5) is fixedly connected with a mounting box (8), the top of the mounting box (8) is fixedly connected with a cover plate (16), the opposite side of the mounting box (8) and the cover plate (16) is rotatably connected with a rotating shaft (17), the outer wall of the rotating shaft (17) is fixedly provided with a worm gear (18), the two side inner walls of the mounting box (8) are rotatably connected with a worm (19) engaged with the worm gear (18), the top of the cover plate (16) is rotatably connected with a support rod (22), the support rod (22) and the rotating shaft (17) are fixedly provided, the top of the support rod (22) is fixedly connected with a mounting bracket (9), the cross section of the mounting bracket (9) is three-quarters of a circle, and the inner wall of the mounting bracket (9) is rotatably provided with a rotating rod (6).

2. A wire protector for a power line construction undercrossing according to claim 1, characterized in that: The circumferential inner wall of the mounting bracket (9) is equidistantly provided with a plurality of mounting grooves (11), and the two end inner walls of the mounting groove (11) are rotatably connected with a rotating rod (12), and the rotating rod (12) is in contact with the rotating rod (6).

3. A wire protector for a power line construction undercrossing according to claim 2, characterized in that: The circumferential outer wall of the rotating rod (6) is provided with two limiting grooves (7) corresponding to the limiting blocks (10), and the limiting blocks (10) are located in the limiting grooves (7).

4. The line protector of claim 1, wherein: The wire protection cylinder (1) comprises a first half cylinder (101) and a second half cylinder (102), and the opposite side of the first half cylinder (101) and the second half cylinder (102) is hinged.

5. A wire protector for a power line construction undercrossing according to claim 4, characterized in that: The outer wall of the circumference of the first half cylinder (101) and the second half cylinder (102) is fixedly connected with a connecting plate (2) at one side, and the top of the two connecting plates (2) is provided with a threaded hole (3), and the inner wall of the two threaded holes (3) is connected with a threaded rod (4) through threads.

6. A wire protector for use in the construction of a power transmission line across an existing line according to claim 1, characterized in that: The top of the mounting plate (5) is slidably provided with two support plates (15), and the circumferential outer wall of the mounting bracket (9) is fixedly connected with the two support plates (15).

7. A wire protector for a power line construction undercrossing according to claim 6, characterized in that: The top of the mounting plate (5) is provided with a moving groove (13) in the form of a ring, and the inner wall of the moving groove (13) is slidably provided with two moving rods (14), and the two moving rods (14) are rotatably connected with the two support plates (15) respectively.

8. The line protector of claim 1, wherein: One end of the outer wall of the mounting box (8) is rotatably connected with a knob (20), and the circumferential outer wall of the knob (20) is provided with a plurality of anti-skid grooves (21), and the knob (20) and the worm (19) are fixedly provided.

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