A double-circuit lightning protection angle steel tower with a narrow base

Abstract

The present invention discloses a double-circuit narrow-base lightning protection angle steel tower, which includes a double-circuit narrow-base lightning protection angle steel tower body. The double-circuit narrow-base lightning protection angle steel tower body includes a tower body support part, a lower lap joint part, a middle lap joint part, an upper lap joint part, a ground wire lap joint part and a lightning rod. The tower body support part, the lower lap joint part, the middle lap joint part, the upper lap joint part and the ground wire lap joint part are connected by a docking component. The upper lap joint part includes a support rod B, a conductor cross arm A and a strengthening rod B. The ground wire lap joint part includes a support rod C, a conductor cross arm B and a support rod D. The docking component includes a docking piece. The docking piece includes a positioning sleeve arranged on the surface of the support rod B, and a docking cup is communicated with the top of the positioning sleeve. The present invention can facilitate the sequential suspension docking and insertion of the lower lap joint part, the middle lap joint part, the upper lap joint part and the ground wire lap joint part. Compared with the prior art, the docking and insertion difficulty of the present application is reduced, and the suspension docking and insertion is simpler and more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of angle steel towers, and in particular to a double-circuit narrow-base lightning protection angle steel tower. Background Art

[0002] With the improvement of the requirements for the reliability of transmission lines, various devices need to be installed on transmission line towers to monitor their operating conditions. Angle steel towers are often used for the transmission of ultra-high voltage cable circuits and are inconvenient to transport. The narrow angle steel tower is a new tower type, and all the main materials are made of angle steel. Under the conditions of meeting the bearing capacity and structural stability, the cost can be greatly reduced. A ladder is arranged inside the tower body, which is composed of a ladder main rod and cross bars connected to the ladder main rod. The ladder main rod is fixedly connected to the support frame, and the support frame is screwed and matched with the connection bracket arranged on the inner wall of the tower body.

[0003] The existing double-circuit narrow-base lightning protection angle steel tower mainly consists of a tower body main body, a ground wire cross arm, an upper conductor cross arm, a middle conductor cross arm and a lower conductor cross arm. There are two common assembly methods. The first is to first assemble the lower part of the tower body main body and connect it to the precast concrete on the ground, and then use the lower part of the tower body main body as a support and suspend the other components by suspension for upward assembly, and let the staff climb on the tower and use bolts for fixed connection; the second is to first form different wholes of each component on the ground, and then use a helicopter to suspend each integral component for assembly and docking, and let the staff climb on the tower and use bolts for fixed connection.

[0004] In the above second method, during docking, the bottom end of the support rod in the suspended component above needs to be inserted into the top of the support rod in the unsuspended component below. The requirements for docking are relatively high, and multiple alignments are required. After alignment and insertion, the suspended component is lowered, and then the staff uses bolts for fixation, with low efficiency and high difficulty.

[0005] Therefore, we propose a double-circuit narrow-base lightning protection angle steel tower to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the disadvantage of the large operation difficulty of the suspended docking and assembly of the angle steel tower in the prior art, and to propose a double-circuit narrow-base lightning protection angle steel tower.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A double-circuit narrow-base lightning protection angle steel tower, comprising a double-circuit narrow-base lightning protection angle steel tower body. The double-circuit narrow-base lightning protection angle steel tower body includes a tower body support part, a lower lap part, a middle lap part, an upper lap part, a ground wire lap part and a lightning rod. The tower body support part, the lower lap part, the middle lap part, the upper lap part and the ground wire lap part are connected by docking components. The upper lap part includes a support rod B, a conductor cross arm A and a strengthening rod B. There are four support rods B, and the four support rods B are connected together by a plurality of strengthening rods B. Two support rods B form a group, and there are two groups in total. There are two conductor cross arms A and they are connected to opposite sides of the two groups of support rods B. The ground wire lap part includes a support rod C, a conductor cross arm B and a strengthening rod D. There are four support rods C, and the four support rods C are connected together by a plurality of strengthening rods D. And two support rods C form a group, and there are two groups in total. There are two conductor cross arms B and they are connected to opposite sides of the two groups of support rods C. The docking component includes a docking piece. The docking piece includes a positioning sleeve arranged on the surface of the support rod B, and a docking cup is communicated with the top of the positioning sleeve. The docking component further includes a positioning block arranged on the surface of the support rod C. The docking component further includes a fixing pressure piece arranged inside the docking cup and on top of the positioning block.

[0009] Preferably, the lower lap part is arranged on the top of the tower body support part through a docking component, the middle lap part is arranged on the top of the lower lap part through a docking component, the upper lap part is arranged on the top of the middle lap part through a docking component, the ground wire lap part is arranged on the top of the upper lap part through a docking component, and the lightning rod is arranged on the top of the ground wire lap part.

[0010] Preferably, the tower body support part includes four support rods A and a plurality of strengthening rods A. The four support rods A are connected together by a plurality of strengthening rods A. The bottom ends of the four support rods A are provided with anchor fixing blocks, and the anchor fixing blocks are connected to precast concrete blocks through anchor bolts, so that the four support rods A stand stably on the ground, and further the tower body support part stands on the ground for support use.

[0011] Preferably, both the lower lap part and the middle lap part include support rods D, conductor cross arms C and strengthening rods E. There are four support rods D, and the four support rods D are all connected by a plurality of strengthening rods E. Two of the four support rods D form a group, and there are two groups in total. There are two conductor cross arms C and they are connected to opposite sides of the two groups of support rods D.

[0012] Preferably, conductor lapping pieces are provided at the bottom corners of the conductor cross arm A, the conductor cross arm B and the conductor cross arm C, and the conductor lapping pieces are connected to the conductor cross arm A, the conductor cross arm B and the conductor cross arm C through bolts.

[0013] Preferably, mounting holes A and B are formed through the surface of the support rod B. When the positioning sleeve is sleeved on the surface of the support rod B, mounting holes D and E corresponding to and communicating with the surfaces of mounting holes A and B are formed on the surface of the positioning sleeve. Mounting bolts are internally threaded in the mounting hole E and the mounting hole B to fix the positioning sleeve on the surface of the support rod B.

[0014] Preferably, when the support rod C is inserted into the support rod B, the positioning block is located in the docking cup. Mounting hole C is formed on the surface of the support rod C and corresponds to and communicates with the mounting hole A and the mounting hole D. A fixing bolt passes through the mounting holes D, A, and C to fixedly connect the support rod B, the positioning sleeve, and the support rod C.

[0015] Preferably, the fixing pressing member includes two pressing blocks. The two pressing blocks are combined into an integral frustum-shaped pressing block. A slot matching the surface of the support rod C is formed through the top of the frustum-shaped pressing block. The two pressing blocks are pressed against the surface of the support rod C through the slot.

[0016] Preferably, the docking cup is provided with a positioning hole F. Positioning holes G corresponding to and communicating with the positioning hole F are formed on the surfaces of the two pressing blocks. A positioning bolt is threadedly connected to the outside of the docking cup through the positioning hole F and the positioning hole G to limit the two pressing blocks in the docking cup, thereby realizing restricting the pressing blocks in the docking cup, connecting the support rod C and the docking cup, and improving the connection stability between the support rod C and the support rod B.

[0017] Preferably, anti-climbing components are provided on the surfaces of the four support rods A. The anti-climbing components include a frustum, a cutting knife, a movable connecting rod, a circular ring, a displacement member, and an adjusting rod. A plurality of receiving grooves are formed circumferentially on the surface of the frustum. The cutting knife is rotatably connected in the receiving groove. A hinge seat is fixedly provided on the surface of the cutting knife. One end of the movable connecting rod is hinged to the hinge seat, and a movable ring is provided at the end of the movable connecting rod away from the hinge seat and is interactively sleeved on the surface of the circular ring.

[0018] Preferably, the adjusting rod passes through the bottom end of the frustum and is rotatably connected to the inside. The displacement member includes a fixed rod and an internal thread ring. The internal thread ring is threadedly sleeved on the surface of the adjusting rod. A plurality of the fixed rods are circumferentially connected to the surface of the internal thread ring, and the end of the fixed rod away from the internal thread ring is connected to the inner ring position of the circular ring. During use, when the staff rotates the adjusting rod clockwise, the adjusting rod drives the internal thread ring to move upward on the surface of the adjusting rod through the thread and drives the circular ring to move upward through the fixed rod. The upward movement of the circular ring squeezes the cutting knife through the movable connecting rod, so that the cutting knife is squeezed and restricted in the receiving groove. When the adjusting rod is rotated counterclockwise, the adjusting rod drives the internal thread ring to descend through the thread. The internal thread ring drives the circular ring to descend through the fixed rod. The circular ring pulls the cutting knife through the movable connecting rod, so that the cutting knife rotates around the rotation point in the receiving groove and turns out from the receiving groove to form an unfolded state.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. When hoisting and assembling at the lapping part, by using the docking cup, the diameter of the insertion interface is enlarged, which facilitates the downward insertion of the docking, prevents multiple dockings during docking, improves the docking efficiency, and enhances the convenience of docking.

[0021] 2. Based on the above beneficial effect 1, after docking, the connectivity between the lapping parts is improved, making the entire angle steel tower more stable during use.

[0022] 3. The present invention can prevent non-staff from climbing onto the angle steel tower. During use, the component is installed on the surface of the support rod A, and the height of the anti-climbing component is below the horizontal height of the strengthening rod A, preventing non-staff from climbing up from the bottom of the angle steel tower.

[0023] 4. Based on the above beneficial effect 1, the frustum in the anti-climbing component can be used as a footrest for climbing. When the staff climbs, the blocking knife is stored in the storage groove on the surface of the frustum, so that it cannot block the staff. At this time, the staff's feet can step on the frustum and continue climbing upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view of a double-circuit narrow-base lightning protection angle steel tower proposed by the present invention;

[0025] Figure 2 is Figure 1 the structural schematic diagram of the upper lapping part and the ground wire lapping part in

[0026] Figure 3 is Figure 2 the structural schematic diagram of the docking component in

[0027] Figure 4 is Figure 3 the partial exploded view of the docking component in

[0028] Figure 5 is Figure 4 the exploded view of the positioning block and the docking cup in

[0029] Figure 6 is Figure 5 the exploded view of the docking part and the support rod B in

[0030] Figure 7 is the structural schematic diagram of the anti-climbing component in a double-circuit narrow-base lightning protection angle steel tower proposed by the present invention;

[0031] Figure 8 is Figure 7The expanded view of the middle knife.

[0032] In the figure: 1, tower support; 101, support rod A; 102, reinforcement rod A; 2, lower overlap; 3, middle overlap; 4, upper overlap; 41, support rod B; 411, mounting hole A; 412, mounting hole B; 42, conductor cross arm A; 43, reinforcement rod B; 5, ground wire overlap; 51, support rod C; 511, mounting hole C; 52, conductor cross arm B; 53, support rod D; 6, support rod D; 7, conductor cross arm C; 8, reinforcement rod E; 9, conductor overlap; 10, docking piece; 10 01. Docking cup; 10011. Positioning hole F; 1002. Positioning sleeve; 10021. Mounting hole D; 10022. Mounting hole E; 1003. Mounting bolt; 1004. Fixing bolt; 11. Positioning block; 12. Fixed pressure piece; 121. Pressure block; 122. Slot; 13. Round table; 131. Storage slot; 14. Knife stopper; 141. Articulated seat; 15. Movable connecting rod; 151. Movable ring; 16. Circular ring; 17. Fixed rod; 18. Internal threaded ring; 19. Adjustment rod; 20. Lightning rod. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0037] Embodiment 1:

[0038] Referring to Figures 1-8 , a double-circuit narrow-base lightning protection angle steel tower includes a double-circuit narrow-base lightning protection angle steel tower body. The double-circuit narrow-base lightning protection angle steel tower body includes a tower body support part 1, a lower overlapping part 2, a middle overlapping part 3, an upper overlapping part 4, a ground wire overlapping part 5 and a lightning rod 20. The tower body support part 1, the lower overlapping part 2, the middle overlapping part 3, the upper overlapping part 4 and the ground wire overlapping part 5 are connected by docking components. The lower overlapping part 2 is arranged at the top of the tower body support part 1 through the docking component, the middle overlapping part 3 is arranged at the top of the lower overlapping part 2 through the docking component, the upper overlapping part 4 is arranged at the top of the middle overlapping part 3 through the docking component, and the ground wire overlapping part 5 is arranged at the top of the upper overlapping part 4 through the docking component. The lightning rod 20, also known as a lightning arrester, is arranged at the top of the ground wire overlapping part 5 to protect buildings, tall trees, etc. from lightning strikes. A lightning arrester is installed at the top of the object to be protected and connected to the lightning discharge ground grid buried underground with a wire of compliant specifications. When the thundercloud discharges close to the ground, it distorts the ground electric field. At the top of the lightning rod, a space with a concentrated local electric field is formed to affect the development direction of the lightning leader discharge, guide the lightning to discharge to the lightning rod, and then introduce the lightning current into the ground through the grounding lead and the grounding device, so that the object to be protected is protected from lightning strikes.

[0039] Referring to Figures 1-8 , for a double-circuit narrow-base lightning protection angle steel tower, the tower body support part 1 includes four support rods A101 and multiple strengthening rods A102. The four support rods A101 are connected together by multiple strengthening rods A102. The bottom ends of the four support rods A101 are provided with anchor fixing blocks, and the anchor fixing blocks are connected to the precast concrete blocks through anchor bolts, so that the four support rods A101 stand stably on the ground, and further the tower body support part 1 stands on the ground for support use. Both the lower overlapping part 2 and the middle overlapping part 3 include support rods D6, conductor cross arms C7 and strengthening rods E8. There are four support rods D6, and the four support rods D6 are all connected by multiple strengthening rods E8. The four support rods D6 are divided into two groups with two in each group. There are two conductor cross arms C7 and they are connected at the opposite side positions of the two groups of support rods D6.

[0040] Referring to Figures 1-8, a double-circuit narrow-base lightning protection angle steel tower. The upper connection part 4 includes a support rod B41, a conductor cross arm A42 and a strengthening rod B43. There are four support rods B41, and the four support rods B41 are connected together by a plurality of strengthening rods B43. Two support rods B41 form a group, and there are two groups in total. There are two conductor cross arms A42 and they are connected to opposite sides of the two groups of support rods B41. The ground wire connection part 5 includes a support rod C51, a conductor cross arm B52 and a strengthening rod D53. There are four support rods C51, and the four support rods C51 are connected together by a plurality of strengthening rods D53. And two support rods C51 form a group, and there are two groups in total. There are two conductor cross arms B52 and they are connected to opposite sides of the two groups of support rods C51. The docking component includes a docking piece 10. The docking piece 10 includes a positioning sleeve 1002 arranged on the surface of the support rod B41, and a docking cup 1001 is communicated with the top of the positioning sleeve 1002. The docking cup 1001 is in a horn shape. The large-diameter end of the docking cup 1001 faces upward for receiving the bottom end of the support rod C51. For example, when the connection part is lifted, the bottom end of the support rod C51 in the ground wire connection part 5 moves above the docking cup 1001 within the range of the large-diameter of the docking cup 1001. Then the ground wire connection part 5 is lowered, so that as long as the bottom end of the support rod C51 contacts the inner wall of the docking cup 1001, due to the funnel-shaped setting of the inner wall of the docking cup 1001, the bottom end of the support rod C51 slides down along the inner wall of the docking cup 1001 and enters the support rod B41 and is docked with the support rod B41 to complete the docking. The docking component further includes a positioning block 11 arranged on the surface of the support rod C51, and the docking component further includes a fixing pressure piece 12 arranged inside the docking cup 1001 and on top of the positioning block 11.

[0041] Refer to Figures 1-8 , a double-circuit narrow-base lightning protection angle steel tower. A conductor connection piece 9 is provided at the bottom corner of the conductor cross arm A42, the conductor cross arm B52 and the conductor cross arm C7. The conductor connection piece 9 is used for connecting the conductors, and the conductor connection piece 9 is connected to the conductor cross arm A42, the conductor cross arm B52 and the conductor cross arm C7 by bolts.

[0042] Refer to Figures 1-8 , a double-circuit narrow-base lightning protection angle steel tower. Mounting holes A411 and mounting holes B412 are penetrated on the surface of the support rod B41. When the positioning sleeve 1002 is sleeved on the surface of the support rod B41, mounting holes D10021 and mounting holes E10022 corresponding to and communicated with the surfaces of the mounting holes A411 and the mounting holes B412 are opened on the surface of the positioning sleeve 1002. Mounting bolts 1003 are internally threaded in the mounting holes E10022 and the mounting holes B412 for fixing the positioning sleeve 1002 on the surface of the support rod B41, and at the same time, it is also convenient to disassemble and assemble the positioning sleeve 1002 and the support rod B41.

[0043] Refer to Figures 1-8, a double-circuit narrow-base lightning protection angle steel tower, when the support rod C51 is docked and inserted in the support rod B41, the positioning block 11 is located in the docking cup 1001, the surface of the support rod C51 is provided with a mounting hole C511 and is correspondingly connected to the mounting hole A411 and the mounting hole D10021, and the mounting hole D10021, the mounting hole A411 and the mounting hole C511 are penetrated with a fixing bolt 1004 for fixing the support rod B41, the positioning sleeve 1002 and the support rod C51;

[0044] The fixed pressing piece 12 includes two pressing blocks 121, and the two pressing blocks 121 are combined together to form an integral truncated cone-shaped pressing block. A slot 122 matching the surface of the support rod C51 is penetrated through the top of the truncated cone-shaped pressing block, and the two pressing blocks 121 are squeezed on the surface of the support rod C51 through the slot 122. The docking cup 1001 is provided with a positioning hole F10011, and the surfaces of the two pressing blocks 121 are provided with a positioning hole G corresponding to the positioning hole F10011. The positioning hole F10011 and the positioning hole G are connected to the external thread of the docking cup 1001 with a positioning bolt for confining the two pressing blocks 121 in the docking cup 1001, so as to limit the pressing blocks 121 in the docking cup 1001, connect the support rod C51 with the docking cup 1001, and improve the connection stability between the support rod C51 and the support rod B41.

[0045] Embodiment 2:

[0046] Reference Figures 1-8 A double-circuit narrow-base lightning protection angle steel tower, based on the first embodiment, the surfaces of the four support rods A101 are all provided with anti-climbing components, and the anti-climbing components include a truncated table 13, a knife block 14, a movable connecting rod 15, a ring 16, a displacement member and an adjusting rod 19, the surface of the truncated table 13 is circumferentially provided with a plurality of receiving grooves 131, the knife block 14 is rotatably connected in the receiving groove 131, the surface of the knife block 14 is fixedly provided with an articulated seat 141, and one end of the movable connecting rod 15 is hinged to the articulated seat 141 , and the end of the movable link 15 away from the hinge seat 141 is provided with a movable ring 151 and is interactively sleeved with the surface of the circular ring 16, the adjusting rod 19 penetrates from the bottom end of the truncated table 13 to the inside and is rotatably connected, the displacement member includes a fixed rod 17 and an internal threaded ring 18, the internal threaded ring 18 is sleeved on the surface of the adjusting rod 19 through a thread, the fixed rod 17 has a plurality of circumferentially connected to the surface of the internal threaded ring 18, and the end of the fixed rod 17 away from the internal threaded ring 18 is connected to the inner circle position of the circular ring 16;

[0047] When it is necessary to climb the angle steel tower for maintenance, one worker tilts and props up the ladder on the support rod A101 and holds it, and then another worker climbs up the ladder to the lower part of the anti-climbing component. Then the worker rotates the adjusting rod 19 clockwise. The adjusting rod 19 drives the internal thread ring 18 to move upward on the surface of the adjusting rod 19 through the thread and drives the ring 16 to move upward through the fixed rod 17. The upward movement of the ring 16 squeezes the cutting knife 14 through the movable connecting rod 15, so that the cutting knife 14 is squeezed and restricted in the receiving groove 131. At this time, the frustum 13 can be used as a stepping block, and then the worker can continue to climb up and step on the stepping block;

[0048] When the maintenance is completed and the worker comes down to the ladder, the adjusting rod 19 is rotated counterclockwise, so that the adjusting rod 19 drives the internal thread ring 18 to descend through the thread. The internal thread ring 18 drives the ring 16 to descend through the fixed rod 17. The ring 16 pulls the cutting knife 14 through the movable connecting rod 15, so that the cutting knife 14 rotates around the rotation point in the receiving groove 131 and flips out of the receiving groove 131 to form an unfolded state for preventing non-workers from climbing onto the angle steel tower.

[0049] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

[0050] In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

Claims

1. A double-circuit narrow-base lightning protection angle steel tower, comprising a double-circuit narrow-base lightning protection angle steel tower body, the double-circuit narrow-base lightning protection angle steel tower body including a tower body support part (1), a lower lap part (2), a middle lap part (3), an upper lap part (4), a ground wire lap part (5) and a lightning rod (20), characterized in that, The tower body support part (1), the lower lapping part (2), the middle lapping part (3), the upper lapping part (4) and the ground wire lapping part (5) are connected by a docking component. The upper lapping part (4) includes a support rod B (41), a conductor cross arm A (42) and a strengthening rod B (43). There are four support rods B (41), and the four support rods B (41) are connected together by a plurality of strengthening rods B (43). Two support rods B (41) form a group, and there are two groups in total. There are two conductor cross arms A (42) and they are connected to the opposite sides of the two groups of support rods B (41). The ground wire lapping part (5) includes a support rod C (51), a conductor cross arm B (52) and a strengthening rod D (53). There are four support rods C (51), and the four support rods C (51) are connected together by a plurality of strengthening rods D (53). Two support rods C (51) form a group, and there are two groups in total. There are two conductor cross arms B (52) and they are connected to the opposite sides of the two groups of support rods C (51). The docking component includes a docking piece (10). The docking piece (10) includes a positioning sleeve (1002) arranged on the surface of the support rod B (41), and a docking cup (1001) is communicated with the top of the positioning sleeve (1002). The docking cup (1001) is in a horn shape, and the large-diameter end of the docking cup (1001) faces upward for receiving the bottom end of the support rod C (51). The docking component further includes a positioning block (11) arranged on the surface of the support rod C (51). The docking component further includes a fixing pressure piece (12) arranged inside the docking cup (1001) and located on the top of the positioning block (11).

2. A double-circuit narrow-base lightning protection angle steel tower according to claim 1, characterized in that, The lower lapping part (2) is arranged on the top of the tower body support part (1) through the docking component. The middle lapping part (3) is arranged on the top of the lower lapping part (2) through the docking component. The upper lapping part (4) is arranged on the top of the middle lapping part (3) through the docking component. The ground wire lapping part (5) is arranged on the top of the upper lapping part (4) through the docking component. The lightning rod (20) is arranged on the top of the ground wire lapping part (5).

3. A double-circuit narrow-base lightning protection angle steel tower according to claim 1, characterized in that, The tower body support part (1) includes four support rods A (101) and a plurality of strengthening rods (102) A. The four support rods A (101) are connected together by a plurality of strengthening rods (102) A. The bottom ends of the four support rods A (101) are provided with anchor fixing blocks.

4. A double-circuit narrow-base lightning protection angle steel tower according to claim 3, characterized in that, Both the lower lapping part (2) and the middle lapping part (3) include a support rod D (6), a conductor cross arm C (7) and a strengthening rod E (8). There are four support rods D (6), and the four support rods D (6) are all connected by a plurality of strengthening rods E (8). Two of the four support rods D (6) form a group, and there are two groups in total. There are two conductor cross arms C (7) and they are connected to the opposite sides of the two groups of support rods D (6).

5. A double-circuit narrow-base lightning protection angle steel tower according to claim 1, characterized in that, The surface of the support rod B (41) is penetrated with a mounting hole A (411) and a mounting hole B (412). The surface of the positioning sleeve (1002) is provided with a mounting hole D (10021) and a mounting hole E (10022) corresponding to and communicating with the surfaces of the mounting hole A (411) and the mounting hole B (412). An installation bolt (1003) is internally threaded in the mounting hole E (10022) and the mounting hole B (412) for fixing the positioning sleeve (1002) on the surface of the support rod B (41).

6. A double-circuit narrow-based lightning protection angle steel tower according to claim 1, characterized in that, The surface of the support rod C (51) is provided with a mounting hole C (511) which corresponds to and communicates with the mounting hole A (411) and the mounting hole D (10021). A fixing bolt (1004) is penetrated through the mounting hole D (10021), the mounting hole A (411) and the mounting hole C (511) for fixedly connecting the support rod B (41), the positioning sleeve (1002) and the support rod C (51).

7. A double-circuit narrow-base lightning protection angle steel tower according to claim 1, characterized in that, The fixing pressing member (12) includes two pressing blocks (121). The two pressing blocks (121) are combined into an integral frustum-shaped pressing block. A slot (122) matching the surface of the support rod C (51) is penetrated through the top of the frustum-shaped pressing block. The two pressing blocks (121) are pressed against the surface of the support rod C (51) through the slot (122).

8. A double-circuit narrow-based lightning protection angle steel tower according to claim 7, characterized in that, The docking cup (1001) is provided with a positioning hole F (10011). The surfaces of the two pressing blocks (121) are provided with positioning holes G corresponding to and communicating with the positioning hole F (10011). A positioning bolt is threadedly connected from the outside of the docking cup (1001) into the positioning hole F (10011) and the positioning hole G for limiting the two pressing blocks (121) in the docking cup (1001).

9. A double-circuit narrow-based lightning protection angle steel tower according to claim 1, characterized in that, Anti-climbing components are provided on the surfaces of the four support rods A (101). The anti-climbing components include a frustum (13), a cutting knife (14), a movable connecting rod (15), a circular ring (16), a displacement member and an adjusting rod (19). A plurality of storage grooves (131) are circumferentially arranged on the surface of the frustum (13). The cutting knife (14) is rotatably connected in the storage groove (131). A hinge seat (141) is fixedly provided on the surface of the cutting knife (14). One end of the movable connecting rod (15) is hinged to the hinge seat (141), and a movable ring (151) is provided at the end of the movable connecting rod (15) away from the hinge seat (141) and is interactively sleeved on the surface of the circular ring (16).

10. A double-circuit narrow-based lightning protection angle steel tower according to claim 9, characterized in that, The adjusting rod (19) penetrates from the bottom end of the frustum (13) to the inside and is rotatably connected. The displacement member includes a fixed rod (17) and an internal thread ring (18). The internal thread ring (18) is threadedly sleeved on the surface of the adjusting rod (19). A plurality of the fixed rods (17) are circumferentially connected to the surface of the internal thread ring (18), and the end of the fixed rod (17) away from the internal thread ring (18) is connected to the inner ring position of the circular ring (16).

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