A new type of top clamp for 35kV overhead line conical strain tower

Abstract

The utility model relates to the technical field of power distribution line fastener, concretely is a new type of pole top hoop for 35kV overhead line conical strain tower, it includes two around the half hoop of conical strain tower, both ends of each half hoop are integrally fixed with the connecting plate, two connecting holes are all arranged on each connecting plate along the diagonal, and two upper and lower distribution stiffening plates are integrally fixed between the outer side of connecting plate and half hoop, the outer side of each half hoop is fixed with two left and right distribution suspender rings, the upper portion of suspender ring is vertical, and is fixedly connected with the outer side of half hoop, the lower portion of suspender ring is arranged at an angle with vertical shaft, and exceeds the bottom end of half hoop, solve the problem that the pole top of existing conical strain tower cannot fix cross arm suspender, the problem that the traditional reserved nail structure has big security quality risk, have the advantages such as ingenious design, safe and reliable, convenient to install, quick replacement, long service life.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology for power distribution lines, specifically a new type of pole top clamp for tapered tension poles of 35kV overhead lines. Background Technology

[0002] Currently, in my country's 35kV overhead lines, the top of tapered tension poles and terminal poles is mostly fixed to the crossarm hangers using pre-reserved through-bolts and section plates. Firstly, during the production of tension poles, we found that the top diameter of tapered tension poles is relatively small, typically φ190mm-φ230mm. To ensure the strength and quality of the tapered tension poles, the internal reinforcement is tightly packed, with small spacing between steel wires or reinforcing bars (usually less than 20mm). According to the standard drawing set "35kV Iron Crossarm Overhead Line (89D175)," to ensure the tension and stability of the crossarm hangers, the diameter of the pre-reserved through-bolts must be greater than 22mm. Therefore, the top of the tapered tension pole cannot be pre-reserved with through-bolts as required by the standard drawing set, making it impossible to fix the crossarm hangers at the top of the tension pole.

[0003] Secondly, traditional pre-installed through-pin structures are prone to bending, deformation, and breakage of through-pins at all stages of production, transportation, installation, and subsequent operation and maintenance. Once deformed or broken, the through-pins cannot be replaced, posing significant safety and quality risks and causing great inconvenience to installation, construction, and subsequent operation and maintenance.

[0004] Therefore, it is necessary to invent a new type of pole-top clamp for tapered tension poles used in 35kV overhead lines to solve the above problems. Utility Model Content

[0005] To address the problems of existing tapered tension poles where the crossarm hanger cannot be fixed at the top and the significant safety and quality risks associated with traditional pre-reserved through-bolt structures, this utility model provides a novel pole-top clamp for tapered tension poles used in 35kV overhead lines.

[0006] This utility model is achieved using the following technical solution: A novel pole-top clamp for tapered tension poles of 35kV overhead lines includes two semi-clamps surrounding the tapered tension pole. Each semi-clamp has a connecting plate integrally fixed at both ends. Each connecting plate has two connecting holes arranged diagonally. Two stiffening plates, distributed vertically, are integrally fixed between the connecting plate and the outer side of the semi-clamp. Each semi-clamp has two left-right suspending rings fixed to its outer side. The upper part of the suspending rings is vertical and fixedly connected to the outer side of the semi-clamp. The lower part of the suspending rings is angled to the vertical axis and extends beyond the bottom of the semi-clamp.

[0007] Furthermore, the corresponding connecting holes on the two semi-clamps are fixedly connected by U-bolts, and both ends of the U-bolts are screwed with fixing nuts.

[0008] Furthermore, a horizontal mounting plate is fixedly connected to the outer side of the semi-clamp, the horizontal mounting plate has mounting holes, and a stiffening plate is fixed between the horizontal mounting plate and the outer side of the semi-clamp.

[0009] Furthermore, the inner side of the semi-clamp fits against the outer wall of the tapered tension bar.

[0010] This utility model has a reasonable and reliable structural design, which saves time and effort while effectively improving construction accuracy and efficiency. It has the advantages of ingenious design, safety and reliability, convenient installation, quick replacement, and long service life, and reduces operation and maintenance costs. It has certain promotional value. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a top view of the structure of this utility model.

[0013] Figure 3 This is a side view of the lifting rod ring in this utility model.

[0014] Figure 4 This is a front view schematic diagram of the lifting rod ring in this utility model.

[0015] In the diagram: 1-half clamp, 2-connecting plate, 3-connecting hole, 4-stiffening plate, 5-lifting rod ring. Detailed Implementation

[0016] A new type of pole-top clamp for tapered tension poles used in 35kV overhead lines, as shown in the attached... Figure 1 - Appendix Figure 4 As shown; including two semi-clamps 1 surrounding a conical tension rod, each semi-clamp 1 has a connecting plate 2 integrally fixed at both ends, each connecting plate 2 has two connecting holes 3, and the two connecting holes 3 are arranged diagonally, and two stiffening plates 4 are integrally fixed between the connecting plate 2 and the outer side of the semi-clamp 1; each semi-clamp 1 has two left and right distributed suspension rod rings 5 ​​fixed on the outer side, the upper part of the suspension rod ring 5 is vertical and fixedly connected to the outer side of the semi-clamp 1, and the lower part of the suspension rod ring 5 is set at an angle to the vertical axis and extends beyond the bottom end of the semi-clamp 1.

[0017] In this utility model, the connecting plate 2 and the connecting hole 3 are used to fix the two half-clamps 1 together, the stiffening plate 4 is used to enhance the connection strength at the connection of the two half-clamps 1, and the rod ring 5 is used to connect the crossarm rod. The lower part of the rod ring 5 is set at an angle to the vertical axis and extends beyond the bottom of the half-clamp 1. At the same time, the connection point of the rod ring 5 and the rod on the crossarm are corresponding, which can better bear the stress of the inclined crossarm rod and ensure the safety and quality of the crossarm rod.

[0018] This utility model changes the original method of pre-reserved through-holes and section plates to a method of two half-clamps connected together, which ensures the integrity of the tension bar, prevents the pre-reserved through-holes from damaging the internal steel wires (reinforcing bars) of the tension bar and thus affecting the overall strength of the top of the bar, and further plays a protective role, extending the service life of the tension bar.

[0019] Use two half-clamps 1 and the rod ring 5 to fix the crossarm rod, ensuring that the crossarm rod is tight and preventing the crossarm from falling down after the clamps come loose.

[0020] The two half-clamps 1 are connected together. The side of the integral clamp is equipped with 4 hanger rings 5, which increases the adjustability of the crossbeam hanger, can correct large material size errors and installation errors, facilitates installation and saves labor.

[0021] Traditional pre-installed nail structures are prone to bending, deformation, and breakage of the nails, and cannot be replaced in a timely manner. The pole-top clamp of this utility model can be replaced at any time in case of an accident, which is convenient and quick and helps to reduce safety and quality risks.

[0022] The two half-clamps 1 are connected together and the whole clamp is reinforced with stiffening plates 4 around the sides, which enhances the mechanical properties of the whole clamp such as tensile strength and bending resistance, ensures the fastening of the crossarm hanger and the overall stability of the crossarm, and increases the service life of the whole clamp.

[0023] The corresponding connecting holes 3 on the two half-clamps 1 are fixedly connected by U-bolts, and both ends of the U-bolts are screwed with fixing nuts.

[0024] In this utility model, the two half-clamps 1 adopt a double-hole double-connection method, which enhances the connection strength of the two half-clamps 1 and increases the force that the half-clamps 1 can withstand from the crossbeam hanger compared to the single-hole single-connection and bolt and nut fixing method.

[0025] A horizontal mounting plate is fixedly connected to the outer side of the semi-clamp 1. The horizontal mounting plate has mounting holes, and a stiffening plate is fixed between the horizontal mounting plate and the outer side of the semi-clamp 1.

[0026] In this utility model, the outer side of the semi-clamp 1 is designed with a horizontal mounting plate and mounting holes, so that this utility model can not only serve as the upper fixed end of the crossbar and the hanging rod, but also as the fixed end of the crossbar. The crossbar is fixedly connected to the horizontal mounting plate by bolts and nuts.

[0027] The inner side of the semi-clamp 1 is fitted against the outer wall of the tapered tension bar, making the installation of the semi-clamp 1 more stable.

[0028] In the specific implementation process, the radius of the semi-clamp 1 is 100mm, which can also be adjusted according to the diameter of the top of the tension bar; The dimensions of the connecting plate 2 are 80mm*8mm*480mm, the dimensions of the stiffening plate 4 are 60mm*8mm*80mm, and the dimensions of the rod ring 5 are φ20mm*220mm.

[0029] The semi-clamp 1, connecting plate 2, stiffening plate 4, and hanger ring 5 are all made of steel with a yield strength of 235MPa or higher and are hot-dip galvanized.

[0030] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel pole-top clamp for tapered tension poles used in 35kV overhead lines, characterized in that: It includes two semi-clamps (1) surrounding a conical tension rod. Each semi-clamp (1) has a connecting plate (2) integrally fixed at both ends. Each connecting plate (2) has two connecting holes (3) arranged diagonally. Two stiffening plates (4) are integrally fixed between the connecting plate (2) and the outer side of the semi-clamp (1). Each semi-clamp (1) has two left-right distributed rod rings (5) fixed on its outer side. The upper part of the rod ring (5) is vertical and fixedly connected to the outer side of the semi-clamp (1). The lower part of the rod ring (5) is set at an angle to the vertical axis and extends beyond the bottom of the semi-clamp (1).

2. A novel pole-top clamp for tapered tension poles of 35kV overhead lines according to claim 1, characterized in that: The corresponding connecting holes (3) on the two half-clamps (1) are fixedly connected by U-bolts, and both ends of the U-bolts are screwed with fixing nuts.

3. A novel pole-top clamp for a tapered tension pole used in 35kV overhead lines according to claim 1, characterized in that: A horizontal mounting plate is fixedly connected to the outer side of the semi-clamp (1). The horizontal mounting plate has mounting holes, and a stiffening plate is fixed between the horizontal mounting plate and the outer side of the semi-clamp (1).

4. A novel pole-top clamp for a tapered tension pole used in 35kV overhead lines according to claim 1, characterized in that: The inner side of the semi-clamp (1) is attached to the outer side wall of the tapered tension bar.

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