Independent cable terminal support for power transmission line

Abstract

The utility model discloses an independent cable terminal support for a power transmission line. The independent cable terminal support comprises a steel cover beam fixedly arranged at the top end of a tubular column, a plurality of cable support assemblies arranged on the left side of the tubular column, a column bottom plate fixedly arranged at the bottom end of the tubular column, and a grounding terminal fixedly arranged at the lower end of the side wall of the tubular column. The steel cover beam comprises a cover beam top plate and a cover beam bottom plate, longitudinal stiffening plates are fixedly connected to the front side and the rear side between the cover beam top plate and the cover beam bottom plate, a plurality of transverse partition plates distributed at intervals are connected between the longitudinal stiffening plates on the two sides, and the top end of the tubular column penetrates through the cover beam bottom plate and then is fixedly connected with the bottom face of the cover beam top plate. A terminal head positioning hole and a lightning arrester positioning hole are respectively formed in two ends of the capping beam top plate; the utility model discloses the integrality is good, rigidity is big, can realize factory prefabrication assembly, on-site quick installation in place, furthest reduces the land occupation, convenient installation and maintenance, and also has very strong versatility.

Description

Technical Field

[0001] The utility model relates to the technical field of cable brackets, in particular to an independent cable terminal bracket for a transmission line. Background Art

[0002] With the gradual advancement of the urbanization process in China, the electricity consumption density in cities has been continuously increasing. Restricted by urban landscapes, space resources, and safety distances, more and more transmission lines adopt a combination of overhead transmission lines and cable transmission lines. This requires a large number of cable terminal brackets to achieve the mutual conversion between the two. Cable terminal brackets are mainly used to support cable terminal heads and lightning arresters and are important structures for power transmission. For the reconstruction and expansion project of a transmission line, adding a cable terminal bracket to an existing pole tower will increase the tower load and change the structural stress condition. It is also very difficult to achieve accurate positioning for installation and fixation.

[0003] After retrieval, the patent with the application number CN201721928587.8 discloses an independent steel pipe cable terminal platform, including a cable end platform support vertical pole, a cable fixing bracket, a protection component, a structure strengthening component, a cable terminal head bracket, and a lightning arrester support component. One end of a cable connecting plate is arranged on one side surface of the cable end platform support vertical pole, and the second end of the cable connecting plate is connected to the first end of a cable support plate through a fixing sleeve; the cable end platform support vertical pole plays a good supporting role for the cable fixing bracket, the protection component, the structure strengthening component, the cable terminal head bracket, and the lightning arrester support component, and functions to support or hang a safety belt for maintenance personnel, thereby improving the operation safety of maintenance personnel; however, there are still problems such as the complex structure of the cable terminal head bracket and the lightning arrester support component.

[0004] Moreover, the existing space truss type cable terminal bracket has a complex structure, numerous components, a large floor area, and is also very time-consuming and laborious for processing and installation. Therefore, an independent cable terminal bracket for a transmission line is proposed to solve the above problems. Summary of the Utility Model

[0005] In order to solve the above problems existing in the prior art, the utility model provides an independent cable terminal bracket for a transmission line.

[0006] The technical solution of the utility model is as follows:

[0007] An independent cable terminal support for a transmission line, comprising a circular tube column, a steel cover beam fixedly arranged at the top end of the circular tube column, several cable support assemblies arranged on the left side of the circular tube column, a ladder arranged on the front side of the circular tube column, a column bottom plate fixedly arranged at the bottom end of the circular tube column, and a grounding terminal fixedly arranged at the lower end of the side wall of the circular tube column; the steel cover beam includes a cover beam top plate and a cover beam bottom plate, longitudinal stiffening plates are fixedly connected to the front and rear sides between the cover beam top plate and the cover beam bottom plate, several diaphragms distributed at intervals are connected between the two longitudinal stiffening plates, and the top end of the circular tube column penetrates through the cover beam bottom plate and is fixedly connected to the bottom surface of the cover beam top plate; terminal head positioning holes and lightning arrester positioning holes are respectively arranged at both ends of the cover beam top plate.

[0008] Preferably, the terminal head positioning hole includes a mounting round hole and first bolt holes circumferentially and arrayedly distributed around the mounting round hole, and a rectangular opening is arranged on one side of the mounting round hole.

[0009] Preferably, the lightning arrester positioning hole is four bolt holes circumferentially and arrayedly distributed.

[0010] Preferably, the cable support assembly includes a cantilever rod fixedly arranged at one end on the outer wall of the circular tube column, a fixture fixing plate is fixedly connected to the outer end of the cantilever rod, and second bolt holes are respectively arranged at both ends of the fixture fixing plate.

[0011] Preferably, the ladder includes an intermediate rod, the intermediate rod is vertically fixedly installed on the outer wall of the circular tube column through several fixing seats, and several pedal rods are alternately arranged on the left and right sides of the intermediate rod.

[0012] Preferably, several third bolt holes are circumferentially and arrayedly arranged on the column bottom plate, and several circumferentially and arrayedly distributed reinforcing rib plates are arranged between the column bottom plate and the outer wall of the circular tube column.

[0013] The utility model has the following beneficial effects: by arranging the steel cover beam in cooperation with the circular tube column, the utility model has stronger structural integrity, greater strength and stiffness, can reduce the flexural deformation of the steel cover beam. At the same time, terminal positioning holes are opened on the cover beam top plate, the mounting round hole therein is used to smoothly lead down the cable under the cable terminal head, and the rectangular opening is used to avoid eddy current loss of the cable at the top of the cover beam. In addition, this structure can realize factory prefabrication and assembly, quick on-site installation, minimize land occupation, facilitate installation and maintenance, and has a beautiful appearance and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is an exploded view of the installation of the circular tube column and the steel cover beam of the utility model;

[0016] Figure 3 is a schematic diagram of the hole position distribution of the cover beam top plate of the steel cover beam of the utility model;

[0017] Figure 4 This is a schematic installation view of the cable support assembly structure of the present utility model;

[0018] Figure 5 This is a schematic view of the bottom structure of the circular tube column of the present utility model.

[0019] The reference numerals in the figure are shown as:

[0020] 1. Circular tube column; 2. Steel cover beam; 21. Cover beam top plate; 22. Longitudinal stiffening plate; 23. Diaphragm; 24. Cover beam bottom plate; 3. Cable support assembly; 31. Cantilever rod; 32. Fixture fixing plate; 33. Second bolt hole; 4. Ladder; 41. Footrest rod; 42. Fixed seat; 43. Intermediate rod; 5. Terminal head positioning hole; 51. Installation round hole; 52. First bolt hole; 53. Rectangular opening; 6. Grounding terminal; 7. Column bottom plate; 71. Third bolt hole; 72. Reinforcing rib plate; 8. Lightning arrester positioning hole. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0022] Refer to Figures 1 to 5 , a self - standing cable terminal support for a transmission line, including a circular tube column 1. A steel cover beam 2 is fixedly arranged at the top end of the circular tube column 1. A plurality of cable support assemblies 3 are arranged on the left side of the circular tube column 1. A ladder 4 is arranged on the front side of the circular tube column 1. A column bottom plate 7 is fixedly arranged at the bottom end of the circular tube column 1. A grounding terminal 6 is fixedly arranged at the lower end of the side wall of the circular tube column 1; The steel cover beam 2 includes a cover beam top plate 21 and a cover beam bottom plate 24. Longitudinal stiffening plates 22 are fixedly connected to the front and rear sides between the cover beam top plate 21 and the cover beam bottom plate 24. A plurality of spaced diaphragms 23 are connected between the two longitudinal stiffening plates 22. The top end of the circular tube column 1 penetrates through the cover beam bottom plate 24 and is fixedly connected to the bottom surface of the cover beam top plate 21; Terminal head positioning holes 5 and lightning arrester positioning holes 8 are respectively arranged at both ends of the cover beam top plate 21.

[0023] In the present utility model, the cover beam top plate 21 is a rectangular plate, and a steel plate with a specification of - 14mm×900mm×2600mm is selected. A terminal head positioning hole 5 is opened on its left side. And the terminal head positioning hole 5 includes an installation round hole 51 and first bolt holes 52 arranged in a circumferential array around the installation round hole 51. A rectangular opening 53 is arranged on one side of the installation round hole 51.

[0024] The installation round hole 51 is used for threading the cable, facilitating the smooth leading down of the cable under the cable terminal head, and then the rectangular notch 53 is provided to prevent the cable from forming a closed loop on the top plate 21 of the capping beam, resulting in eddy current loss.

[0025] Furthermore, the arrester positioning holes 8 are four bolt holes distributed in a circumferential array, and the bolt holes are symmetrically distributed about the center.

[0026] Furthermore, the cable support assembly 3 includes a cantilever rod 31 fixed at one end to the outer wall of the circular pipe column 1. A fixture fixing plate 32 is fixedly connected to the outer end of the cantilever rod 31, and second bolt holes 33 are respectively formed at both ends of the fixture fixing plate 32. The cable fixture is fixed through the fixture fixing plate 32. The cantilever rod 31 is used to support the cable of the terminal head so that it can be smoothly led down, and the layer spacing between each layer of the cable support assemblies 3 provided is less than 2 meters.

[0027] Furthermore, the ladder 4 includes an intermediate rod 43. The intermediate rod 43 is vertically fixedly installed on the outer wall of the circular pipe column 1 through a plurality of fixing seats 42, and a plurality of pedal rods 41 are alternately arranged on the left and right sides of the intermediate rod 43.

[0028] Furthermore, a plurality of third bolt holes 71 are circumferentially arrayed on the column base plate 7, and a plurality of stiffening rib plates 72 distributed in a circumferential array are arranged between the column base plate 7 and the outer wall of the circular pipe column 1. The stiffening rib plates 72 have a specification of -12mm×150mm×300mm and are used to enhance the connection strength and rigidity of the column base plate 7.

[0029] The working principle of the present utility model:

[0030] In the present utility model, first, a steel capping beam 2 is fixedly arranged at the top end of the circular pipe column 1, making the overall device have greater strength and rigidity, while reducing the flexural deformation of the steel capping beam 2 and making the structural integrity stronger. The steel capping beam 2 includes a capping beam top plate 21 and a capping beam bottom plate 24. Longitudinal stiffening plates 22 are fixedly connected to the front and rear sides between the capping beam top plate 21 and the capping beam bottom plate 24. Two transverse diaphragms 23 are connected between the two longitudinal stiffening plates 22. The upper and lower sides of the transverse diaphragms 23 and the longitudinal stiffening plates 22 are flush. And in the present utility model, the minimum clear distance between the two transverse diaphragms 23 and the circular pipe column 1 is 300mm. The top end of the circular pipe column 1 penetrates through the capping beam bottom plate 24 and is fixedly connected to the bottom surface of the capping beam top plate 21.

[0031] Among them, terminal head positioning holes 5 and lightning arrester positioning holes 8 are respectively arranged at both ends of the capping beam top plate 21. The terminal head positioning hole 5 includes an installation round hole 51 and first bolt holes 52 that are circumferentially and arrayedly distributed around the installation round hole 51. A rectangular opening 53 is arranged on one side of the installation round hole 51; the installation round hole 51 is used for threading a cable, facilitating the smooth leading down of the cable under the cable terminal head; the setting of the rectangular notch 53 is used to prevent the cable from forming a closed loop on the capping beam top plate 21, resulting in eddy current loss.

[0032] Then, a number of cable support assemblies 3 are arranged on the left and right sides of the circular tube column 1. The cable support assembly 3 includes a cantilever rod 31 with one end fixed to the outer wall of the circular tube column 1. A fixture fixing plate 32 is fixedly connected to the outer end of the cantilever rod 31. Second bolt holes 33 are respectively opened at both ends of the fixture fixing plate 32; the cable fixture is fixed through the fixture fixing plate 32. The suspension rod 31 is used to support the cable of the terminal head so that it can be smoothly led down, and the layer spacing between each layer of cable support assemblies 3 arranged is less than 2 meters.

[0033] A ladder 4 is arranged on the front side of the circular tube column 1. The ladder 4 includes an intermediate rod 43. The intermediate rod 43 is vertically fixedly installed on the outer wall of the circular tube column 1 through a number of fixing seats 42. A number of footrest rods 41 are alternately arranged on the left and right sides of the intermediate rod 43;

[0034] At the same time, a column base plate 7 is fixedly arranged at the bottom end of the circular tube column 1. A number of third bolt holes 71 are circumferentially and arrayedly opened on the column base plate 7. A number of circumferentially and arrayedly distributed stiffening rib plates 72 are arranged between the column base plate 7 and the outer wall of the circular tube column 1; the stiffening rib plates 72 adopt a specification of -12mm×150mm×300mm, which is used to enhance the connection strength and stiffness of the column base plate 7. A grounding terminal 6 is fixedly arranged at the lower end of the side wall of the circular tube column 1;

[0035] Finally, when the overall device is fixed on site, the column base plate 7 is fixed on the foundation by passing the anchor bolts through the second bolt holes 71.

[0036] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A transmission line independent cable terminal bracket, characterized in that: The invention comprises a circular tube column (1), wherein a steel cap beam (2) is fixedly arranged at the top end of the circular tube column (1), a plurality of cable support assemblies (3) are arranged on the left side of the circular tube column (1), a ladder (4) is arranged on the front side of the circular tube column (1), a column base plate (7) is fixedly arranged at the bottom end of the circular tube column (1), and a grounding terminal (6) is fixedly arranged at the lower end of the side wall of the circular tube column (1); the steel cap beam (2) comprises a cap beam top plate (21) and a cap beam bottom plate (22). 4), longitudinal stiffening plates (22) are fixedly connected on the front and rear sides between the cap beam top plate (21) and the cap beam bottom plate (24), and a plurality of spaced-apart transverse partitions (23) are connected between the longitudinal stiffening plates (22) on both sides, and the top end of the circular tube column (1) passes through the cap beam bottom plate (24) and is fixedly connected to the bottom surface of the cap beam top plate (21); terminal head positioning holes (5) and lightning arrester positioning holes (8) are respectively provided at both ends of the cap beam top plate (21).

2. The independent cable terminal bracket for power transmission lines according to claim 1, characterized in that: The terminal head positioning hole (5) comprises a mounting circular hole (51) and first bolt holes (52) distributed in an annular array around the mounting circular hole (51); a rectangular opening (53) is provided on one side of the mounting circular hole (51).

3. The independent cable terminal bracket for power transmission lines according to claim 1, characterized in that: The arrester positioning holes (8) are four bolt holes distributed in an annular array.

4. The independent cable terminal bracket for power transmission lines according to claim 1, characterized in that: The cable support assembly (3) comprises a cantilever rod (31) with one end fixed to the outer wall of the circular tube column (1), the outer end of the cantilever rod (31) is fixedly connected to a clamp fixing plate (32), and the two ends of the clamp fixing plate (32) are respectively provided with a second bolt hole (33).

5. The independent cable terminal bracket for power transmission lines according to claim 1, characterized in that: The ladder (4) comprises an intermediate rod (43), wherein the intermediate rod (43) is fixedly mounted vertically on the outer wall of the circular tube column (1) via a plurality of fixing seats (42), and a plurality of pedal rods (41) are alternately arranged on the left and right sides of the intermediate rod (43).

6. The independent cable terminal bracket for power transmission lines according to claim 1, characterized in that: A plurality of third bolt holes (71) are provided in an annular array on the column base plate (7), and a plurality of reinforcing rib plates (72) distributed in an annular array are provided between the column base plate (7) and the outer wall of the circular tube column (1).

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