Steel pipe pole for cable terminal of power transmission tower

Abstract

The power transmission tower cable terminal steel pipe pole comprises a main pole, an operation table, a ladder stand and a locking structure, the operation table is arranged in the middle of the main pole, the ladder stand is arranged on the side wall of the main pole, an opening is formed in the side, corresponding to the ladder stand, of the operation table, and the ladder stand comprises a fixed ladder section and a telescopic ladder section; the two sides of the bottom of the fixed ladder section are provided with sliding rails slidably connected with the telescopic ladder section, the top of the telescopic ladder section is provided with a first limiting block, the two sides of the middle of the telescopic ladder section are provided with first locking rods, the sliding rails are provided with locking grooves matched with the first locking rods, the telescopic ladder section is further provided with an adjusting piece, and the adjusting piece comprises a linkage part and an operation part. The linkage part is connected with the first locking rod, and the operation part is arranged at the bottom of the telescopic ladder section and connected with the linkage part; and a locking structure for locking the operation part is arranged at the bottom of the main rod. According to the steel pipe pole for the cable terminal of the power transmission tower, climbing of non-professionals is avoided, meanwhile, the ladder stand can be manually and rapidly lifted conveniently, and the steel pipe pole is not prone to being limited in use.

Description

Technical Field

[0001] The utility model relates to the field of steel pipe poles, in particular to a steel pipe pole for a cable terminal of a transmission tower. Background Art

[0002] The cable terminal is generally arranged at a relatively high position of the steel pipe pole, and a ladder is generally arranged on the steel pipe pole to facilitate the climbing of maintenance personnel. CN219672285U discloses a steel pipe pole for a cable terminal that is convenient for maintenance. To prevent non-professional personnel from climbing and at the same time facilitate the climbing of maintenance personnel, a telescopic ladder is provided, and a driving member for driving the telescopic ladder to expand and contract is provided to drive the ladder to lift and lower. This driving member has an electricity demand, and it is not easy to lower the ladder during power outage maintenance or when the driving member fails, and its use is limited. Content of the Utility Model

[0003] In view of the above problems, the utility model provides a steel pipe pole for a cable terminal of a transmission tower, which can prevent non-professional personnel from climbing and at the same time facilitate the manual and rapid lifting and lowering of the ladder, and its use is not easily limited.

[0004] The technical solution of the utility model is as follows:

[0005] A steel pipe pole for a cable terminal of a transmission tower includes a main pole, an operating platform, a ladder and a locking structure. The operating platform is arranged in the middle of the main pole, the ladder is arranged on the side wall of the main pole, and an opening for people to pass through is arranged on one side of the operating platform corresponding to the ladder. The ladder includes a fixed ladder section and a telescopic ladder section. Sliding rails for connecting the telescopic ladder section are arranged on both sides of the bottom of the fixed ladder section. A first limiting block is arranged at the top of the telescopic ladder section. Telescopic first locking rods are arranged on both sides of the middle of the telescopic ladder section. Locking grooves matching the first locking rods are arranged on the sliding rails. An adjusting member for adjusting the expansion and contraction of the first locking rods is further arranged on the telescopic ladder section. The adjusting member includes a linkage part and an operating part. The linkage part is connected to the first locking rod, and the operating part is arranged at the bottom of the telescopic ladder section and is connected to the linkage part; a locking structure for locking the operating part is arranged at the bottom of the main pole.

[0006] In a further technical solution, the telescopic ladder section includes two vertical handrails and a plurality of climbing rods horizontally arranged at intervals between the handrails. Both the handrails and the climbing rods are hollow rods, and the hollow parts of the handrails are communicated with the hollow parts of the climbing rods.

[0007] In a further technical solution, the linkage part is arranged inside the handrail and includes a linkage rod and a top block with an elliptical cross-section arranged on the linkage rod. The top block is aligned with the end of the climbing rod. The first locking rod is arranged in the climbing rod corresponding to the top block in the middle of the telescopic ladder section. One end of the first locking rod abuts against the top block, and a telescopic hole matching the first locking rod is arranged on the handrail corresponding to the other end of the first locking rod. A reset structure for the first locking rod to contract towards the top block is arranged between the first locking rod and the handrail.

[0008] In a further technical solution, the reset structure includes a pressing ring and a spring. The pressing ring is disposed outside the inner part of the first locking rod within the handrail, with a diameter larger than the telescopic hole. The spring is disposed between the pressing ring and the inner wall of the handrail.

[0009] In a further technical solution, it further includes a second locking rod having the same diameter as the first locking rod. The second locking rod is disposed within the handrail where the top block is located, and on the side of the top block facing away from the first locking rod. One end of the second locking rod abuts against the top block, and a telescopic hole matching the second locking rod is provided on the corresponding handrail at the other end. A reset structure the same as that outside the first locking rod is provided outside the second locking rod, and a locking groove matching the second locking rod is provided on the slide rail.

[0010] In a further technical solution, a second limiting block is provided on the outer side of the bottom of the handrail. When the top of the second limiting block abuts against the bottom of the slide rail, the first locking rod and the second locking rod are just aligned with the locking grooves respectively.

[0011] In a further technical solution, the bottom end of the linkage rod extends outside the bottom end of the climbing rod, and the operating part is a handle disposed at the bottom end of the linkage rod.

[0012] In a further technical solution, the locking structure includes a housing with a switch door provided on the front side. A door lock is provided between the switch door and the housing, and an entrance for the handle to pass through is provided on the side of the housing close to the handle.

[0013] In a further technical solution, both ends of the first locking rod are spherical, and both ends of the second locking rod are spherical.

[0014] The beneficial effects of the present utility model are:

[0015] 1. The telescopic ladder section can move relative to the fixed ladder section. The first limiting block can abut against the top end of the slide rail to limit the position where the telescopic ladder section descends. The staff can operate the linkage part at a lower position using the operating part to separate the first locking rod from the locking groove, so as to lower the telescopic ladder section along the slide rail, which is convenient for professional personnel to climb and overhaul. After the overhaul, the telescopic ladder section can be pushed up, and the linkage part can be restored manually, so that the first locking rod enters the locking groove, and the operating part is locked through the locking structure to prevent non-professional personnel from climbing;

[0016] 2. The ends of the first locking rod and the second locking rod can be respectively pushed out of the telescopic hole by rotating the top block with an elliptical cross-section and inserted into the locking groove to lock both sides of the telescopic ladder section. The locking stability is high, the operation is convenient and fast, and when unlocking, the positions of the first locking rod and the second locking rod can be reset by relying on the spring, which is convenient for quickly unlocking the telescopic ladder section;

[0017] 3. The second limit block facilitates professionals to quickly locate the locking position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of a steel pipe pole for a cable terminal of a transmission tower according to an embodiment of the present invention;

[0019] Figure 2 is a schematic sectional view of the middle part of the telescopic ladder section according to an embodiment of the present invention;

[0020] Figure 3 is a schematic structural view of the connection between the fixed ladder section and the telescopic ladder section according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural view of the slide rail according to an embodiment of the present invention;

[0022] Figure 5 is a schematic structural view of the top block according to an embodiment of the present invention;

[0023] Figure 6 is a schematic view of the locking structure according to an embodiment of the present invention.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS:

[0025] 10, main pole; 20, operating platform; 30, fixed ladder section; 31, slide rail; 32, locking groove; 40, telescopic ladder section; 41, first limit block; 42, handrail; 43, climbing pole; 44, first locking rod; 45, second locking rod; 46, second limit block; 51, linkage rod; 52, top block; 53, handle; 61, extrusion ring; 62, spring; 70, locking structure; 71, housing; 72, switch door; 73, entrance and exit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further describes the embodiments of the present invention with reference to the drawings.

[0027] Embodiment:

[0028] As Figures 1-5As shown in the figure, a steel pipe pole for cable terminal of a transmission tower includes a main pole 10, an operating platform 20, a ladder and a locking structure 70. The operating platform 20 is arranged in the middle of the main pole 10 and is used for installing structures such as cable terminals and lightning arresters, facilitating maintenance by professionals on the operating platform 20. The ladder is arranged on the side wall of the main pole 10. An opening for people to pass through is provided on one side of the operating platform 20 corresponding to the ladder. The ladder includes a fixed ladder section 30 and a telescopic ladder section 40. The fixed ladder section 30 is above the opening, and sliding rails 31 for slidingly connecting the telescopic ladder section 40 are provided on both sides of its bottom. A first limit block 41 is provided at the top of the telescopic ladder section 40. The telescopic ladder section 40 includes two vertical handrails 42 and a number of climbing bars 43 horizontally arranged at intervals between the handrails 42. Both the handrails 42 and the climbing bars 43 are hollow rods, and the hollow parts of the handrails 42 and the climbing bars 43 communicate with each other;

[0029] On both sides of the middle of the telescopic ladder section 40, there are retractable first locking rods 44. Locking grooves 32 matching the first locking rods 44 are provided on the sliding rails 31. An adjusting member for adjusting the extension and retraction of the first locking rods 44 is also provided on the telescopic ladder section 40. The adjusting member includes a linkage part and an operating part. The linkage part is arranged inside the handrail 42 and includes a linkage rod 51 and a top block 52 with an elliptical cross-section arranged on the linkage rod 51. The top block 52 is aligned with the end of the climbing bar 43. The first locking rod 44 is arranged inside the climbing bar 43 corresponding to the top block 52 in the middle of the telescopic ladder section 40. One end of the first locking rod 44 abuts against the top block 52. An expansion hole matching the first locking rod 44 is provided on the handrail 42 corresponding to the other end of the first locking rod 44. A reset structure for the first locking rod 44 to contract towards the top block 52 is provided between the first locking rod 44 and the handrail 42. The reset structure includes a pressing ring 61 and a spring 62. The pressing ring 61 is arranged outside the part of the first locking rod 44 inside the handrail 42 and has a diameter larger than the expansion hole. The spring 62 is arranged between the pressing ring 61 and the inner wall of the handrail 42; the bottom end of the linkage rod 51 extends outside the bottom end of the climbing bar 43, and the operating part is a handle 53 arranged at the bottom end of the linkage rod 51; a locking structure 70 for locking the handle 53 is provided at the bottom of the main pole 10, and the locking structure 70 can be any structure that cannot be easily unlocked by non-professionals.

[0030] The working principle of the above technical solution is as follows:

[0031] Before maintenance, the top block 52 is in a state of jacking up the first locking rod 44, that is, the end of the first locking rod 44 is jacked out from the telescopic hole and inserted into the locking groove 32 to fix the telescopic ladder section 40 at a higher position to prevent non-professionals from climbing. At the same time, the operating part has a locking structure 70 locked at the lower part of the main rod 10. During maintenance, the locking of the locking structure 70 on the handle 53 can be released, and the handle 53 can be held and rotated 90 degrees to rotate the linkage rod 51 to rotate the top block 52, so that the top block 52 reduces the extrusion on the first locking rod 44. The elastic force of the spring 62 can push the extrusion ring 61 to drive the first locking rod 44 to contract, so that the first locking rod 44 is separated from the locking groove 32, and then the telescopic ladder section 40 can be lowered along the slide rail 31 to facilitate the climbing of professionals.

[0032] In another embodiment, as Figure 2 shown, on the basis of the above embodiment, it further includes a second locking rod 45 with the same diameter as the first locking rod 44. The second locking rod 45 is arranged in the handrail 42 where the top block 52 is located, and on the side of the top block 52 facing away from the first locking rod 44. One end of the second locking rod 45 abuts against the top block 52, and a telescopic hole matching the second locking rod 45 is provided on the corresponding handrail 42 at the other end. A reset structure the same as that outside the first locking rod 44 is arranged outside the second locking rod 45, and a locking groove 32 matching the second locking rod 45 is provided on the slide rail 31.

[0033] The second locking rod 45 can perform the same telescopic action as the first locking rod 44 when the top block 52 is rotated. The setting of the second locking rod 45 can cooperate with the first locking rod 44 to lock both sides of the telescopic ladder section 40, and the locking stability is high.

[0034] In another embodiment, as Figure 1 shown, a second limit block 46 is provided on the outer side of the bottom of the handrail 42. When the top of the second limit block 46 abuts against the bottom of the slide rail 31, the first locking rod 44 and the second locking rod 45 are just aligned with the locking groove 32 respectively.

[0035] The second limit block 46 facilitates professionals to quickly find the locking position.

[0036] In another embodiment, as Figure 1 and Figure 6 shown, the locking structure 70 includes a housing 71 with a switch door 72 provided on the front side. A door lock is provided between the switch door 72 and the housing 71. An entrance 73 for the handle 53 to pass through is provided on one side of the housing 71 close to the handle 53. The handle 53 is arranged on one side of the bottom end of the linkage rod 51, and when the telescopic ladder section 40 is in the locked state, the handle 53 just turns into the housing 71.

[0037] When the handle 53 is turned into the housing 71, the switch door 72 can be closed, and the lock of the switch door 72 can be locked with a special key to limit the handle 53 and prevent the linkage rod 51 from turning.

[0038] In another embodiment, as Figure 2 and Figure 5 shown, both ends of the first locking rod 44 are spherical, both ends of the second locking rod 45 are spherical, and an arc-shaped depression is provided in the middle of the top block 52. One end of the first locking rod 44 and the second locking rod 45 in contact with the top block 52 facilitates relative sliding with respect to the top block 52, and the resistance to turning the top block 52 is small; since one end of the first locking rod 44 and the second locking rod 45 corresponding to the locking groove 32 is spherical, it is convenient to enter the locking groove 32.

[0039] The above-described embodiments merely represent the specific embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A cable terminal steel pipe pole for a transmission tower, characterized in that It includes a main rod, an operating platform, a ladder and a locking structure. The operating platform is arranged in the middle of the main rod. The ladder is arranged on the side wall of the main rod. An opening for people to pass through is arranged on one side of the operating platform corresponding to the ladder. The ladder includes a fixed ladder section and a telescopic ladder section. Slide rails for slidably connecting the telescopic ladder section are arranged on both sides of the bottom of the fixed ladder section. A first limiting block is arranged at the top of the telescopic ladder section. Telescopic first locking rods are arranged on both sides of the middle of the telescopic ladder section. Locking grooves matching the first locking rods are arranged on the slide rails. An adjusting member for adjusting the expansion and contraction of the first locking rods is further arranged on the telescopic ladder section. The adjusting member includes a linkage part and an operating part. The linkage part is connected to the first locking rods. The operating part is arranged at the bottom of the telescopic ladder section and is connected to the linkage part. A locking structure for locking the operating part is arranged at the bottom of the main rod.

2. The steel pipe pole for the cable terminal of a transmission tower according to claim 1, characterized in that, The telescopic ladder section includes two vertical handrails and a number of climbing rods horizontally arranged at intervals between the handrails. Both the handrails and the climbing rods are hollow rods. The hollow parts of the handrails communicate with the hollow parts of the climbing rods.

3. The steel pipe pole for the cable terminal of a transmission tower according to claim 2, wherein, The linkage part is arranged inside the handrail and includes a linkage rod and a top block with an oval cross-section arranged on the linkage rod. The top block is aligned with the end of the climbing rod. The first locking rod is arranged in the climbing rod corresponding to the top block in the middle of the telescopic ladder section. One end of the first locking rod abuts against the top block. An expansion and contraction hole matching the first locking rod is arranged on the handrail corresponding to the other end of the first locking rod. A reset structure for the first locking rod to contract towards the top block is arranged between the first locking rod and the handrail.

4. A steel pipe pole for a cable terminal of a transmission tower according to claim 3, characterized in that, The reset structure includes a pressing ring and a spring. The pressing ring is arranged on the outside of the part of the first locking rod inside the handrail and has a diameter larger than the expansion and contraction hole. The spring is arranged between the pressing ring and the inner wall of the handrail.

5. A steel pipe pole for a cable terminal of a transmission tower according to claim 4, characterized in that, It further includes a second locking rod with the same diameter as the first locking rod. The second locking rod is arranged inside the handrail where the top block is located and on the side of the top block facing away from the first locking rod. One end of the second locking rod abuts against the top block. An expansion and contraction hole matching the second locking rod is arranged on the handrail corresponding to the other end of the second locking rod. The same reset structure as that outside the first locking rod is arranged outside the second locking rod. Locking grooves matching the second locking rod are arranged on the slide rails.

6. The steel pipe pole for the cable terminal of a transmission tower according to claim 5, wherein A second limiting block is arranged on the outside of the bottom of the handrail. When the top of the second limiting block abuts against the bottom of the slide rail, the first locking rod and the second locking rod are just aligned with the locking grooves respectively.

7. A steel pipe pole for a cable terminal of a transmission tower according to claim 3, wherein, The bottom end of the linkage rod extends outside the bottom end of the climbing rod. The operating part is a handle and is arranged at the bottom end of the linkage rod.

8. A steel pipe pole for a cable terminal of a transmission tower according to claim 5, characterized in that, The locking structure includes a housing with a switch door on the front side. A door lock is arranged between the switch door and the housing. An entrance for the handle to pass through is arranged on one side of the housing close to the handle.

9. A steel pipe pole for a cable terminal of a transmission tower according to claim 5, characterized in that, Both ends of the first locking rod are spherical. Both ends of the second locking rod are spherical.

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