A connecting unit and a same-tower multi-loop cable terminal tower

Abstract

The utility model discloses a kind of connecting unit and same-tower multi-loop cable terminal tower, including overhanging lever, first connecting piece and second connecting piece, one end of overhanging lever is fixed with first connecting piece, two ends of second connecting piece are respectively installed on overhanging lever and first connecting piece by bolt, first connecting piece and second connecting piece are used for clamping fixed on the section steel of iron tower, the other end of overhanging lever is used for installing fixed support frame.The utility model is fixed by connecting unit clamping iron tower, support frame is installed on iron tower, so that hole needs not to be opened on iron tower.

Description

Technical Field

[0001] This utility model relates to the field of overhead power transmission line technology, and in particular to a connection unit and a multi-circuit cable terminal tower on the same tower. Background Technology

[0002] Chinese patent document CN108418167A discloses a four-circuit single-line cable terminal tower, which includes a tower body and four transmission lines. A square mounting platform is installed around the lower section of the tower body. The transmission lines of the first, second, third, and fourth transmission lines are respectively led down from the front, rear, left, and right sides of the tower body and connected to the cable heads on the mounting platform. Its advantages are: by installing a square installation platform around the lower section of the tower, each transmission line is led down and connected to the cable head of the installation platform, thereby reducing the connection points between the transmission line and the cable, shortening the cable length, avoiding the need for excessive clamps when laying cables at high altitudes, and reducing the load on the tower. Its disadvantages are: the transmission line is directly installed on the tower through composite supports. When installing the composite supports, holes need to be drilled in the tower, which reduces the structural strength of the tower. Furthermore, if adjustments are needed according to the actual site conditions during construction, holes need to be drilled again, which not only affects the construction schedule, but also makes the holes prone to corrosion due to inadequate anti-corrosion, thus shortening the service life of the tower.

[0003] To address this, we propose a simple connection unit that does not require drilling holes in the tower, as well as a multi-circuit cable terminal tower on the same tower. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a connection unit and a multi-circuit cable terminal tower on the same tower. The tower has multiple support frames installed from bottom to top through the connection unit. The support frames are used to fix cables and / or install electrical components. The connection unit is clamped and installed on the tower, so that it is not necessary to drill holes in the tower.

[0005] To achieve the above objectives, this application provides a connection unit, including a cantilever rod, a first connector, and a second connector. One end of the cantilever rod is fixedly connected to the first connector, and both ends of the second connector are respectively bolted to the cantilever rod and the first connector. The first connector and the second connector are used to clamp and fix to the steel profile of the iron tower, and the other end of the cantilever rod is used to install a fixed support frame.

[0006] The other end of the cantilever rod is provided with several connection holes, and the cantilever rod is bolted to the support frame through the connection holes.

[0007] The cantilever rod has a positioning protrusion at one end of the first connector, and there is a space between the first connector and the positioning protrusion to hold the steel structure on the tower.

[0008] The positioning protrusion has a guide slope and a retaining surface. The guide slope is located on the side away from the cantilever rod, and the guide slope smoothly transitions with the cantilever rod. The retaining surface is located on the side facing the steel tower.

[0009] A multi-circuit cable terminal tower on the same tower includes an iron tower, wherein support frames are installed at intervals from bottom to top through the connecting units, and the support frames are used to fix cables and / or install electrical components.

[0010] The support frame includes several first extension frames, each with a connecting unit installed at both ends. The first extension frames are installed on the lower side of the iron tower via the connecting units. The first extension frame includes a first crossbar with a first U-bolt mounted on it. The first U-bolt is used to fix the cable protection tube, and the cable protection tube is used to insert a three-phase cable.

[0011] The support frame includes several second extension frames, each with a connecting unit installed at both ends, and the second extension frame is located above the first extension frame. The second extension bracket includes a second crossbar with a second U-bolt mounted on it for securing the three-phase cable.

[0012] The support frame includes several third extension frames, each with a connecting unit installed at both ends, and the third extension frame is located above the second extension frame. The third extension frame includes two third crossbars, which are connected and fixed together by several first connecting rods. Three third U-bolts are installed at intervals on the outer third crossbar, and the third U-bolts are used to fix the single-phase cable.

[0013] The support frame also includes a fourth extension frame, with connecting units installed at both ends of the fourth extension frame, and the fourth extension frame is installed on the iron tower through the connecting units; The fourth extension frame includes two fourth crossbars, which are connected and fixed together by at least three second connecting rods. Three first mounting holes are spaced apart on the outer end face of the outer fourth crossbar for mounting post insulators. Three counter mounting plates are spaced apart on the top surface of the outer fourth crossbar for mounting counters. Lightning arrester mounting positions are provided on the second connecting rods for mounting lightning arresters. The overhead cable is fixed to the post insulator.

[0014] The support frame also includes a fifth extension frame, with connecting units installed at both ends of the fifth extension frame. The fifth extension frame is installed on the upper end of the iron tower through the connecting units. The fifth extension frame includes a fifth crossbar, and a number of second mounting holes are provided at intervals on the outer end face of the fifth crossbar. The second mounting holes are used to install post insulators; the overhead cable is fixed on the post insulator.

[0015] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: 1. The cantilever pole of this utility model is used for cantilever installation support frame. The first connector and the second connector are used to clamp and fix it on the steel of the iron tower, so that there is no need to drill holes in the iron tower.

[0016] 2. By setting a positioning protrusion, this utility model allows the connecting unit to be initially secured to the tower during installation, making it easier to install the second connecting piece.

[0017] 3. The iron tower in this utility model has multiple layers of support frames installed from bottom to top through connecting units. These support frames are used to fix cables and / or install electrical components. If a support frame is damaged, it can be replaced individually. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the main structure of the multi-circuit cable terminal tower in this utility model.

[0019] Figure 2 This is a side view of the multi-circuit cable terminal tower of the present invention.

[0020] Figure 3 This is a schematic diagram of the connecting unit in this utility model.

[0021] Figure 4 This is a schematic diagram of the cantilever rod in the connecting unit of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the cantilever rod in the connecting unit of this utility model.

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting unit of this utility model.

[0024] Figure 7 This is a schematic diagram of the structure of the first extension frame in this utility model.

[0025] Figure 8 This is a schematic diagram of the structure of the second extension frame in this utility model.

[0026] Figure 9 This is a schematic diagram of the third extension frame in this utility model.

[0027] Figure 10 This is a schematic diagram of the fourth extension frame in this utility model.

[0028] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure of AA.

[0029] Figure 12 This is a schematic diagram of the fifth extension frame in this utility model.

[0030] Figure Labels Eiffel Tower 10; Cable protection pipe 20, three-phase cable 21, single-phase cable 22; Support frame 30; First extension bracket 31, first crossbar 311, first U-bolt 312; Second extension bracket 32, second crossbar 321, second U-bolt 322; The third extension bracket 33, the third crossbar 331, the first connecting rod 332, and the third U-bolt 333; Fourth extension bracket 34, fourth crossbar 341, second connecting rod 342, first mounting hole 343, surge arrester mounting position 344, counter mounting plate 345; Fifth extension bracket 35, fifth crossbar 351, second mounting hole 352; Overhead cable 40; 50mm post insulator; Surge arrester 60, counter 61; Connecting unit 70, cantilever rod 71, first connector 72, second connector 73, bolt 74, connecting hole 75, positioning protrusion 76, guide slope 761, and retaining surface 762; Cable termination 80. Detailed Implementation

[0031] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be specifically noted that the specific embodiments described below are only for illustrating the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0032] Regarding the explanation of terminology: In this application, "and / or" is used to describe the relationship between related objects, covering three possible situations: taking "A and / or B" as an example, it can indicate the situation where only A exists, A and B exist simultaneously, or only B exists; the symbol " / " indicates the "or" relationship between related objects, such as "A / B" which refers to A or B.

[0033] Regarding the description of the embodiments: The terms "exemplary" and "for example" appearing in this application are only used to illustrate the technical solutions through specific examples. It should be particularly emphasized that any implementation method or design scheme marked as "exemplary" or "for example" should not be construed as having an advantage over other solutions. Such expressions are only used to present the technical concepts more intuitively.

[0034] Example 1: See Figure 3-6 This embodiment provides a connection unit 70, including a cantilever rod 71, a first connector 72, and a second connector 73. One end of the cantilever rod 71 is fixedly connected to the first connector 72, and both ends of the second connector 73 are respectively installed on the cantilever rod 71 and the first connector 72 by bolts 74. The first connector 72 and the second connector 73 are used to clamp and fix to the steel profile of the iron tower 10, and the other end of the cantilever rod 71 is used to install and fix the support frame 30.

[0035] The cantilever rod 71 is used to cantilever the support frame 30. The first connector 72 and the second connector 73 are used to clamp and fix the support frame 30 to the steel frame of the tower 10. The cantilever rod 71 is fixed to the tower 10, thereby fixing the support frame 30 to the tower 10. The support frame is used to fix cables and / or install electrical components. This invention uses a connecting unit to clamp the tower and install the support frame 30 on the tower, thus eliminating the need to drill holes in the tower.

[0036] Further, see Figure 3 The other end of the cantilever rod 71 is provided with several connecting holes 75. The cantilever rod 71 is bolted to the support frame 30 through the connecting holes 75, making the installation of the cantilever rod 71 and the support frame 30 more convenient and flexible. Figure 7 At this point, the cantilever rod 71 has two connecting holes 75, through which a first crossbar 311 is installed using bolts. Combined with... Figure 9 At this time, four connecting holes 75 are provided on the cantilever rod 71, and two third crossbars 331 are installed by bolts.

[0037] See Figure 4 The cantilever rod 71 has a positioning protrusion 76 at one end of the first connector 72, and there is space between the first connector 72 and the positioning protrusion 76 to hold the steel structure on the tower 10. By setting the positioning protrusion 76, the connecting unit 70 can be initially secured to the tower 10 during installation, which facilitates the installation of the second connector 73. During installation, the cantilever rods 71 ​​are first installed at both ends of the support frame 30, and then the cantilever rods 71 ​​on both sides are secured to the steel structure of the tower 10.

[0038] Specifically, see Figure 4 , 5The positioning protrusion 76 has a guide slope 761 and a retaining surface 762. The guide slope 761 is located on the side away from the cantilever rod 71 and the guide slope 761 smoothly transitions with the cantilever rod 71. The retaining surface 762 is located on the side facing the 10-type steel tower.

[0039] See Figure 4 The positioning protrusion 76 is a triangular block welded to the cantilever rod 71. See also... Figure 5 The positioning protrusion 76 is a flange structure that is set on the cantilever rod 71 by stamping.

[0040] Example 2: See Figure 1 , 2 A multi-circuit cable terminal tower on the same tower includes a tower 10, and support frames 30 are installed at intervals through connection units 70 from bottom to top on the tower 10. The support frames 30 are used to fix cables and / or install electrical components.

[0041] See Figure 1 The support frame 30 includes several first extension frames 31, and each end of the first extension frame 31 is equipped with a connecting unit 70. The first extension frame 31 is installed on the lower side of the iron tower 10 through the connecting unit 70.

[0042] See Figure 7 The first extension frame 31 includes a first crossbar 311, on which a first U-bolt 312 is mounted. The first U-bolt 312 is used to fix the cable protection pipe 20, and the cable protection pipe 20 is used to insert a three-phase cable 21. The first crossbar 311 is bolted to the cantilever pole 71, and the first crossbar 311 is made of angle steel.

[0043] See Figure 1 The support frame 30 includes several second extension frames 32, and each end of the second extension frame 32 is equipped with a connecting unit 70. The second extension frame 32 is located on the upper side of the first extension frame 31.

[0044] See Figure 8 The second extension frame 32 includes a second crossbar 321, on which a second U-bolt 322 is mounted for securing the three-phase cable 21. The second crossbar 321 is bolted to the cantilever pole 71, and the second crossbar 321 is made of angle steel.

[0045] See Figure 1 The support frame 30 includes several third extension frames 33, and each end of the third extension frame 33 is equipped with a connecting unit 70. The third extension frame 33 is located on the upper side of the second extension frame 32.

[0046] See Figure 9The third extension frame 33 includes two third crossbars 331, which are connected and fixed together by several first connecting rods 332. Three third U-bolts 333 are installed at intervals on the outer third crossbar 331 for fixing the single-phase cable 22. The third crossbars 331 are bolted to the cantilever pole 71, and the two ends of the first connecting rods 332 are respectively bolted to the two third crossbars 331. Both the third crossbars 331 and the first connecting rods 332 are made of angle steel.

[0047] See Figure 1 The support frame 30 also includes a fourth extension frame 34, with connecting units 70 installed at both ends of the fourth extension frame 34. The fourth extension frame 34 is installed on the iron tower 10 through the connecting units 70.

[0048] See Figure 10 The fourth extension frame 34 includes two fourth crossbars 341, which are connected and fixed together by at least three second connecting rods 342. Three first mounting holes 343 are spaced apart on the outer end face of the outer fourth crossbar 341 for mounting the post insulator 50. Three counter mounting plates 345 are spaced apart on the top surface of the outer fourth crossbar 341 for mounting counters 61. A surge arrester mounting position 344 is provided on the second connecting rod 342 for mounting a surge arrester 60. The overhead cable 40 is fixed to the post insulator 50. The fourth crossbars 341 are bolted to the cantilever pole 71, and the two ends of the second connecting rods 342 are bolted to the two fourth crossbars 341 respectively. Both the fourth crossbars 341 and the second connecting rods 342 are made of angle steel.

[0049] When using, please refer to Figure 1 The single-phase cable 22 is connected to the overhead cable 40 through the cable terminal 80.

[0050] See Figure 1 The support frame 30 also includes a fifth extension frame 35, with connecting units 70 installed at both ends of the fifth extension frame 35. The fifth extension frame 35 is installed on the upper end of the iron tower 10 through the connecting units 70.

[0051] See Figure 11 The fifth extension bracket 35 includes a fifth crossbar 351. Several second mounting holes 352 are spaced apart on the outer end face of the fifth crossbar 351 for mounting the post insulator 50. The overhead cable 40 is fixed to the post insulator 50. The fifth crossbar 351 is bolted to the cantilever pole 71, and the fifth crossbar 351 is made of angle steel.

[0052] The working principle or process of this utility model: During installation, the cantilever rods 71 ​​are installed on the lower sides of both ends of the corresponding support frame 30 with bolts as needed. Then, the corresponding support frame 30 is installed at the corresponding height position of the iron tower 10. During installation, the connecting unit 70 is initially snapped onto the iron tower 10 to initially position the support frame 30. Then, the second connecting piece 73 is connected and fixed to the cantilever rod 71 and the first connecting piece 72 with bolts.

[0053] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A connecting unit (70), characterized in that: It includes a cantilever rod (71), a first connector (72) and a second connector (73). One end of the cantilever rod (71) is fixed to the first connector (72). The two ends of the second connector (73) are respectively installed on the cantilever rod (71) and the first connector (72) by bolts (74). The first connector (72) and the second connector (73) are used to clamp and fix to the steel of the iron tower (10). The other end of the cantilever rod (71) is used to install the fixed support frame (30).

2. The connecting unit (70) according to claim 1, characterized in that: The other end of the cantilever rod (71) is provided with several connecting holes (75), and the cantilever rod (71) is bolted to the support frame (30) through the connecting holes (75).

3. The connecting unit (70) according to claim 1, characterized in that: The cantilever rod (71) has a positioning protrusion (76) at one end of the first connector (72), and there is a space between the first connector (72) and the positioning protrusion (76) to hold the steel on the iron tower (10).

4. The connecting unit (70) according to claim 3, characterized in that: The positioning protrusion (76) has a guide slope (761) and a retaining surface (762). The guide slope (761) is located on the side away from the cantilever rod (71), and the guide slope (761) and the cantilever rod (71) are smoothly transitioned. The retaining surface (762) is located on the side facing the steel structure of the iron tower (10).

5. A multi-circuit cable terminal tower on the same tower, comprising an iron tower (10), characterized in that: The tower (10) is equipped with support frames (30) at intervals from bottom to top through the connection unit (70) as described in claim 1. The support frames (30) are used to fix cables and / or install electrical components.

6. A multi-circuit cable terminal tower according to claim 5, characterized in that: The support frame (30) includes a plurality of first extension frames (31), and each end of the first extension frame (31) is respectively equipped with a connecting unit (70). The first extension frame (31) is installed on the lower side of the iron tower (10) through the connecting unit (70). The first extension frame (31) includes a first crossbar (311) on which a first U-bolt (312) is installed. The first U-bolt (312) is used to fix the cable protection tube (20), and the cable protection tube (20) is used to insert a three-phase cable (21).

7. A multi-circuit cable terminal tower according to claim 6, characterized in that: The support frame (30) includes several second extension frames (32), and connecting units (70) are respectively installed at both ends of the second extension frames (32). The second extension frames (32) are located on the upper side of the first extension frame (31). The second extension bracket (32) includes a second crossbar (321) on which a second U-bolt (322) is mounted for fixing the three-phase cable (21).

8. A multi-circuit cable terminal tower according to claim 7, characterized in that: The support frame (30) includes several third extension frames (33), and connecting units (70) are installed at both ends of the third extension frames (33). The third extension frames (33) are located on the upper side of the second extension frames (32). The third extension frame (33) includes two third crossbars (331), which are connected and fixed by a number of first connecting rods (332). Three third U-bolts (333) are installed at intervals on the outer third crossbar (331), which are used to fix the single-phase cable (22).

9. A multi-circuit cable terminal tower according to claim 5, characterized in that: The support frame (30) also includes a fourth extension frame (34), with connecting units (70) installed at both ends of the fourth extension frame (34), and the fourth extension frame (34) is installed on the iron tower (10) through the connecting units (70); The fourth extension frame (34) includes two fourth crossbars (341), which are connected and fixed by at least three second connecting rods (342). Three first mounting holes (343) are provided at intervals on the outer end face of the fourth crossbar (341) located on the outside. The first mounting holes (343) are used to install post insulators (50). Three counter mounting plates (345) are installed at intervals on the top surface of the fourth crossbar (341) located on the outside. Counters (61) are installed on the counter mounting plates (345). Lightning arrester mounting positions (344) are provided on the second connecting rods (342). Lightning arresters (60) are installed on the lightning arrester mounting positions (344). The overhead cable (40) is fixed on the post insulator (50).

10. A multi-circuit cable terminal tower according to claim 5, characterized in that: The support frame (30) also includes a fifth extension frame (35), with connecting units (70) installed at both ends of the fifth extension frame (35), and the fifth extension frame (35) is installed on the upper end of the iron tower (10) through the connecting units (70); The fifth extension frame (35) includes a fifth crossbar (351), and a number of second mounting holes (352) are provided at intervals on the outer end face of the fifth crossbar (351). The second mounting holes (352) are used to install the post insulator (50); the overhead cable (40) is fixed on the post insulator (50).

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