Anti-climbing device for power transmission tower

Abstract

The utility model relates to an anti-climbing device for a power transmission iron tower, belongs to the field of power transmission iron towers, and aims to prevent large and medium-sized wild animals from climbing along leg columns of the iron tower and bring convenience for maintenance personnel to climb up and down for maintenance. Comprising an upper fixed ring, a lower movable ring, a transmission rod, a supporting rod and a flexible wire pull net. The upper fixing ring surrounds the iron tower leg column and is fixed to the iron tower leg column. The lower movable ring movably surrounds an iron tower leg column in the vertical direction. The lower movable ring is positioned below the upper fixed ring; a plurality of supporting rods are evenly distributed around the lower movable ring in the circumferential direction, the inner ends of the supporting rods are hinged to the lower movable ring, and the outer ends of the supporting rods radiate outwards in the radial direction of the lower movable ring. A plurality of transmission rods are distributed around the iron tower leg column, the top ends of the transmission rods are hinged to the upper fixing ring, and the bottom ends are hinged to the supporting rods; the flexible wire pull net is laid on a framework defined by the multiple supporting rods. The supporting rod can be unfolded and contracted like an umbrella, and the contracted supporting rod is close to an iron tower leg column and is convenient for maintainers to climb.

Description

Technical Field

[0001] The utility model belongs to the field of power transmission iron towers, in particular to a power transmission iron tower anti-climbing device. Background Art

[0002] In recent years, with the improvement of the ecological environment, the population of large and medium-sized wild animals has increased, the distribution range has expanded, and the overlap between the activity range of large and medium-sized wild animals and the location of transmission line towers has increased. On the one hand, large and medium-sized animals climbing towers threaten the safety of power transmission; on the other hand, rare and protected large and medium-sized animals climbing towers may cause injuries such as falling from heights, electric shock, and death from entrapment, which endangers the safety of protected animals. If proper measures are not taken to ensure the safe coexistence of transmission towers and wild animals, it will restrict the feasibility of line selection and tower erection in areas where large and medium-sized wild animals are distributed.

[0003] Common anti-climbing measures for transmission lines include anti-climbing platforms, anti-climbing rings / thorns, anti-climbing fences, etc. Various technical solutions have certain application defects.

[0004] The anti-climbing platform is a closed platform located in the lower middle part of the tower. The platform has a large deadweight and increases wind pressure, making it difficult to retrofit existing towers.

[0005] The flexible characteristics of the anti-climbing ring / thorn structure may cause the protected animals to be entangled, stabbed, or injured during the anti-climbing process. In addition, when maintenance personnel climb the tower for maintenance, the disassembly and reinstallation of the ring / thorn structure is cumbersome.

[0006] The anti-climbing railing is a fixed installation. When maintenance personnel climb the tower for maintenance, the entire railing needs to be dismantled and reinstalled, which is a cumbersome operation. Utility Model Content

[0007] The utility model aims to provide a transmission iron tower anti-climbing device, which can prevent large and medium-sized wild animals from climbing along the iron tower legs and facilitate maintenance personnel to climb up and down for maintenance.

[0008] The technical solution adopted by the utility model is: a transmission tower anti-climbing device, comprising an upper fixed ring, a lower movable ring, a transmission rod, a support rod and a flexible wire net;

[0009] The upper fixed ring surrounds the tower leg column and is fixed to the tower leg column; the lower movable ring vertically movably embraces the tower leg column; the lower movable ring is located below the upper fixed ring;

[0010] Several support rods are evenly distributed around the lower movable ring, the inner ends of the support rods are hinged to the lower movable ring, and the outer ends radiate outward along the radial direction of the lower movable ring;

[0011] Several transmission rods are distributed around the tower legs, the top ends of the transmission rods are hinged to the upper fixing ring, and the bottom ends are hinged to the support rods;

[0012] The flexible wire net is laid on a frame formed by a plurality of support rods.

[0013] Furthermore, a limiting hole 1 is provided on the lower movable ring and penetrates the side wall thereof in a radial direction; a limiting hole 2 and a limiting hole 3 are provided on the iron tower leg column; the limiting hole 3 is located vertically below the limiting hole 2 along the iron tower leg column;

[0014] When the lower movable ring moves vertically downward along the tower leg column to the lower limit position, the limit hole 1 is aligned with the limit hole 3, and the limit bolt is installed between the limit hole 1 and the limit hole 3 to lock the bottom;

[0015] When the lower movable ring moves vertically upward along the tower leg column to the upper limit position, the limit hole 1 is aligned with the limit hole 2, and the limit bolt is installed between the limit hole 1 and the limit hole 2 for top locking.

[0016] Furthermore, the upper fixing ring includes an annular body and ear seats surrounding the outer circumference of the annular body and having the same number as the transmission rod, and the top end of the transmission rod is hinged to the ear seats.

[0017] Furthermore, each of the ear seats includes two ear plates that are arranged opposite to each other, and the top end of the transmission rod is located between the two ear plates.

[0018] Furthermore, the transmission rod gradually tilts outwards from the top end to the bottom end.

[0019] Furthermore, the distance between the hinge point of the transmission rod on the support rod and the inner end of the support rod is less than or equal to 1 / 3 of the total length of the support rod.

[0020] Furthermore, the support rod includes an inner section, a middle section and an outer section along its length direction; the connection points of the flexible wire net are arranged at the outer end of the outer section, the joint between the middle section and the outer section, the joint between the inner section and the middle section, and the midpoint of the inner section.

[0021] Furthermore, the inner section is thicker than the middle section and the outer section.

[0022] The beneficial effects of the utility model are as follows: the transmission tower anti-climbing device disclosed in the present embodiment prevents medium and large animals from climbing by spreading a flexible wire net, and the flexible wire net is flexible and will not cause entanglement / thorns and other injuries to wild animals; the support rods are spread out to form a skeleton for laying the flexible wire net, which provides good support for the flexible wire net; the support rods can be spread out and retracted like an umbrella, and after being retracted, they are close to the tower legs, which is convenient for maintenance personnel to climb and is conducive to the smooth progress of maintenance work. During maintenance, no disassembly is required, which greatly saves the maintenance period; the spreading and retraction of several support rods are achieved by moving the lower movable ring downward and upward, and the operation is simple and easy; furthermore, the flexible wire net is formed by flexible wires, which will not increase the wind pressure and snow pressure on the tower, is easy to install and implement, and is particularly suitable for the anti-climbing transformation of existing towers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the novel working state (expanded state);

[0024] Figure 2 It is a schematic diagram of the structure of the utility model in a closed state (contracted state);

[0025] Figure 3 This is a schematic diagram of the transmission rod and the support rod of the utility model in the unfolded state;

[0026] Figure 4 This is a schematic diagram of the transmission rod and the support rod of the utility model in the retracted state;

[0027] Figure 5 2 is a schematic diagram of the structure of the upper fixing ring;

[0028] Figure 6 is a schematic diagram of the support rod structure;

[0029] Figure 7 Schematic diagram of the lower movable ring locking.

[0030] In the figure, an upper fixed ring 1, an annular body 1A, an ear plate 1B, a lower movable ring 2, a transmission rod 3, a support rod 4, an inner section 4A, a middle section 4B, an outer section 4C, a flexible wire net 5, an iron tower leg column 6, a limiting hole one 7, a limiting hole two 8, and a limiting hole three 9. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0032] In this utility model, the terms "circumferential", "vertical", "upper", "lower", "inner", "outer" and so on indicating directions are used in their respective positions. Figure 1 The following is based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] Transmission tower anti-climbing device, such as Figure 1-4 As shown, it includes an upper fixed ring 1, a lower movable ring 2, a transmission rod 3, a support rod 4 and a flexible wire net 5. The upper fixed ring 1 surrounds the iron tower leg column 6 and is fixed to the iron tower leg column 6, that is, the upper fixed ring 1 is in a circular ring shape, and the inner diameter of the circular ring can accommodate the iron tower leg column 6. The upper fixed ring 1 surrounds the iron tower leg column 6 and other climbable columns, and can be fastened to the iron tower leg column 6 by welding or bolt connection. After it is installed on the iron tower leg column 6, it cannot move up and down along the iron tower leg column 6.

[0034] The lower movable ring 2 is movable and embraced on the tower leg column 6 in the vertical direction, that is, the lower movable ring 2 is in the shape of a ring, and its inner diameter can accommodate the tower leg column 6. The lower movable ring 2 surrounds the tower leg column 6 and other climbable columns, and the lower movable ring 2 can move up and down along the tower leg column 6 when needed.

[0035] If the lower movable ring 2 is located above the upper fixed ring 1 , it is inconvenient to drive the lower movable ring 2 to move up and down due to the obstruction of the upper fixed ring 1 . In order to avoid this problem, the lower movable ring 2 is located below the upper fixed ring 1 along the vertical direction of the tower leg 6 .

[0036] There are several support rods 4 evenly distributed around the lower movable ring 2. The inner ends of the support rods 4 are hinged to the lower movable ring 2, and the outer ends radiate radially outward along the lower movable ring 2. That is, these several support rods 4 surround the tower leg 6 to form an umbrella-like skeleton, which is used to spread the flexible wire net 5. There are several transmission rods 3 distributed around the tower leg 6. The top ends of the transmission rods 3 are hinged to the upper fixed ring 1, and the bottom ends are hinged to the support rods 4. It should be noted that one transmission rod 3 corresponds to one support rod 4. In this way, several transmission rods 3 and several support rods 4 are arranged in a divergent ring around the upper fixed ring 1 and the lower movable ring 2, and are combined to form an umbrella-shaped linkage structure. When the lower movable ring 2 moves up, all the support rods 4 rotate downward and shrink; when the lower movable ring 2 moves down, all the support rods 4 are linked to expand.

[0037] A plurality of flexible wires are connected between adjacent support rods 4 to form a flexible wire net 5. When all support rods 4 are unfolded, the flexible wires are stretched to form a flexible wire net 5, that is, the flexible wire net 5 is laid on a frame surrounded by a plurality of support rods 4. When all support rods 4 are retracted, the flexible wire net 5 is also retracted.

[0038] In daily use, the lower movable ring 2 moves down to the lower limit position and is locked in position at the lower limit position, all support rods 4 are unfolded, and the flexible wire net 5 is in an unfolded state, which prevents large and medium-sized wild animals from climbing upward.

[0039] In the maintenance state, the lower limit locking position is released, the lower movable ring 2 is moved up to the upper limit position, and the lower movable ring 2 is locked and positioned at the upper limit position, all the support rods 4 are retracted close to the tower leg columns 6, and the flexible wire net 5 is retracted accordingly, which is convenient for maintenance personnel to climb.

[0040] The transmission tower anti-climbing device disclosed in the present embodiment prevents medium and large animals from climbing by spreading a flexible wire net 5. The flexible wire net 5 is flexible and will not cause entanglement / thorns or other injuries to wild animals. The support rods 4 are spread out to form a skeleton for laying the flexible wire net 5, which provides good support for the flexible wire net 5. The support rods 4 can be expanded and retracted like an umbrella. After retracting, they are close to the tower legs 6, which is convenient for maintenance personnel to climb and conducive to the smooth progress of maintenance work. During maintenance, no disassembly is required, which greatly saves the maintenance period. The expansion and contraction of several support rods 4 are achieved by moving the lower movable ring 2 downward and upward, and the operation is simple and easy. Furthermore, the flexible wire net 5 is formed by flexible wires, which will not increase the wind pressure and snow pressure on the tower, is easy to install and implement, and is particularly suitable for the anti-climbing transformation of existing towers.

[0041] In order to lock the lower movable ring 2 when necessary, Figure 7 As shown, a limiting hole 1 7 is provided on the lower movable ring 2 and penetrates the side wall thereof in a radial direction; a limiting hole 2 8 and a limiting hole 3 9 are provided on the tower leg column 6; the limiting hole 3 9 is located vertically below the limiting hole 2 8 along the tower leg column 6;

[0042] When the lower movable ring 2 moves down to the lower limit position, at this time, the support rod 4 is almost perpendicular to the tower leg column 6. In order to lock the lower movable ring 2 and prevent the lower movable ring 2 from being pushed up when the animal climbs up, the limit hole 1 7 is aligned with the limit hole 3 9, and the limit bolt is installed between the limit hole 1 7 and the limit hole 3 9 to lock the bottom.

[0043] When the lower movable ring 2 moves up to the upper limit position, at this time, the support rod 4 is almost parallel to the tower leg column 6. In order to lock the lower movable ring 2 and prevent the lower movable ring 2 from moving downward under the action of gravity, the limit hole 1 7 is aligned with the limit hole 2 8, and the limit bolt is installed between the limit hole 1 7 and the limit hole 2 8 for top locking.

[0044] The upper fixing ring 1 can be directly a smooth circular ring. In this embodiment, in order to facilitate the connection between the transmission rod 3 and the upper fixing ring 1, as shown in FIG. Figure 5 As shown, the upper fixing ring 1 includes an annular body 1A and ear seats surrounding the outer circumference of the annular body 1A, which are equal to the number of transmission rods 3, and the top end of the transmission rod 3 is hinged to the ear seats. Each ear seat includes two ear plates 1B arranged opposite to each other, and the top end of the transmission rod 3 is located between the two ear plates 1B.

[0045] The transmission rod 3 can be parallel to the tower leg 6. In order to make the force more reasonable and to save effort when pushing the lower movable ring 2 upward to avoid jamming, the transmission rod 3 is preferably gradually tilted outward from the top to the bottom.

[0046] However, the larger the inclination angle of the transmission rod 3, the better. The larger the inclination angle, the longer the length of the transmission rod 3, while the smaller the inclination angle, the less conducive it is to pulling the support rod 4. In order to avoid the above problem, in this embodiment, the distance between the hinge point of the transmission rod 3 on the support rod 4 and the inner end of the support rod 4 is less than or equal to 1 / 3 of the total length of the support rod 4.

[0047] In order to reasonably arrange the flexible wire net 5, Figure 6 As shown, the support rod 4 includes an inner section 4A, a middle section 4B and an outer section 4C along its length direction; the connection points of the flexible wire net 5 are set at the outer end of the outer section 4C, the joint between the middle section 4B and the outer section 4C, the joint between the inner section 4A and the middle section 4B, and the midpoint of the inner section 4A. The connection points are the fixing points of the flexible wire on the support rod 4. In this way, the closer to the tower leg column 6, the denser the flexible wire net 5 is, and the better the protection effect.

[0048] The support rod 4 is cantilevered. In order to increase the rigidity of the support rod 4 while reducing the weight of the support rod 4 and minimizing wind pressure and snow pressure, the inner section 4A is thicker than the middle section 4B and the outer section 4C, that is, the middle section 4B and the outer section 4C have smaller diameters, and the inner section 4A has a slightly larger diameter than the middle section 4B and the outer section 4C.

Claims

1. Transmission tower anti-climbing device, characterized by: It comprises an upper fixed ring (1), a lower movable ring (2), a transmission rod (3), a support rod (4) and a flexible wire net (5); The upper fixed ring (1) surrounds the iron tower leg column (6) and is fixed to the iron tower leg column (6); the lower movable ring (2) vertically movably embraces the iron tower leg column (6); the lower movable ring (2) is located below the upper fixed ring (1); A plurality of support rods (4) are evenly distributed around the lower movable ring (2), wherein the inner ends of the support rods (4) are hinged to the lower movable ring (2), and the outer ends radiate radially outward along the lower movable ring (2); A plurality of transmission rods (3) are distributed around the iron tower leg column (6), wherein the top end of the transmission rod (3) is hinged to the upper fixing ring (1), and the bottom end is hinged to the support rod (4); The flexible wire net (5) is laid on a framework formed by a plurality of support rods (4).

2. The transmission tower anti-climbing device according to claim 1, characterized in that: A limiting hole 1 (7) is provided on the lower movable ring (2) and penetrates the side wall thereof in a radial direction; a limiting hole 2 (8) and a limiting hole 3 (9) are provided on the iron tower leg column (6); the limiting hole 3 (9) is located vertically below the limiting hole 2 (8) along the iron tower leg column (6); When the lower movable ring (2) moves vertically downward along the tower leg column (6) to the lower limit position, the limit hole 1 (7) and the limit hole 3 (9) are aligned, and the limit bolt is installed between the limit hole 1 (7) and the limit hole 3 (9) to lock the bottom; When the lower movable ring (2) moves vertically to the upper limit position along the iron tower leg column (6), the limit hole 1 (7) and the limit hole 2 (8) are aligned, and the limit bolts are installed between the limit hole 1 (7) and the limit hole 2 (8) to perform top locking.

3. The transmission tower anti-climbing device according to claim 1 or 2, characterized in that: The upper fixing ring (1) comprises an annular body (1A) and ear seats surrounding the outer circumference of the annular body (1A) and having the same number as the transmission rod (3); the top end of the transmission rod (3) is hinged to the ear seats.

4. The transmission tower anti-climbing device according to claim 3, characterized in that: Each ear seat comprises two ear plates (1B) arranged opposite to each other, and the top end of the transmission rod (3) is located between the two ear plates (1B).

5. The transmission tower anti-climbing device according to claim 1 or 2, characterized in that: The transmission rod (3) gradually tilts outwards from the top end to the bottom end.

6. The transmission tower anti-climbing device according to claim 5, characterized in that: The distance between the hinge point of the transmission rod (3) on the support rod (4) and the inner end of the support rod (4) is less than or equal to 1 / 3 of the total length of the support rod (4).

7. The transmission tower anti-climbing device according to claim 1 or 2, characterized in that: The support rod (4) comprises an inner section (4A), a middle section (4B) and an outer section (4C) along its length direction; the connection points of the flexible wire net (5) are arranged at the outer end of the outer section (4C), the joint between the middle section (4B) and the outer section (4C), the joint between the inner section (4A) and the middle section (4B) and the midpoint of the inner section (4A).

8. The transmission tower anti-climbing device according to claim 7, characterized in that: The inner section (4A) is thicker than the middle section (4B) and the outer section (4C).

Images