High-voltage line lower limit height protection frame structure

Abstract

The utility model provides a high-voltage line lower limit height protection frame structure, which comprises two rows of steel pipe columns, an anti-collision base, a protection net and a plurality of twisted steel bars, the two rows of steel pipe columns are arranged in a bilateral symmetry manner, and each row of columns comprises a plurality of columns arranged at intervals; flange steel plates are embedded in the tops of the anti-collision bases, the steel pipe stand columns are connected with the anti-collision bases through flange bolts, anchoring holes are formed in the four corners of each anti-collision base respectively, and the anchoring holes are suitable for being connected with twisted steel bars. The protective net comprises channel steel cross beams, square timbers and insulating plates, the channel steel cross beams are installed at the tops of the two rows of corresponding stand columns, the square timbers are laid at the tops of the channel steel cross beams to form grids, and the insulating plates are laid above the square timbers; the twisted steel bars are suitable for being embedded in a base.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of height limiting protection structure for underground engineering construction, in particular to a kind of height limiting protection frame under high-voltage line for ensuring construction safety. BACKGROUND

[0002] With the development of social economy and the improvement of urban infrastructure, the development of underground space is continuously strengthened. Therefore, the construction of underground engineering such as open cut method pipe gallery and power tunnel inevitably passes under the existing municipal buildings, especially various overhead pipelines in the construction area, which cannot be relocated and improved in a short period of time due to long relocation period and high cost. The existence of high-voltage overhead lines will inevitably affect the construction space of various large mechanical equipment in the open cut method foundation pit construction. The most important thing is to ensure the safety of construction. In addition to meeting the requirements of power facility protection in terms of horizontal and vertical minimum safety distance, high-voltage line height limiting protection frame is also needed to ensure the absolute safety of construction. SUMMARY

[0003] The purpose of the present application is to design a full-paving type height limiting frame structure to achieve the purposes of convenient installation and removal, and safe mechanical operation, in view of the risk of breakthrough of the grid line arrangement spacing (6 m) of the conventional high-voltage line color nylon rope protection net height limiting frame.

[0004] The utility model provides a kind of high-voltage line height limiting protection frame structure, and the structure includes:

[0005] Two rows of steel pipe columns, the two rows of steel pipe columns are symmetrically arranged, and each row of steel pipe column includes a plurality of column arranged at intervals;

[0006] A plurality of anti-collision bases, a flange steel plate is pre-buried on the top of the anti-collision base, the steel pipe column is connected with the anti-collision base by flange bolts, anchor holes are respectively formed on the four corners of the anti-collision base, and the anchor holes are suitable for being connected with threaded steel bars;

[0007] A protective net, the protective net includes a channel steel cross beam, a square wood and an insulating plate, the channel steel cross beam is installed on the top of the two rows of steel pipe columns, the square wood is laid on the top of the channel steel cross beam to form a grid, and the insulating plate is laid on the top of the square wood;

[0008] A plurality of threaded steel bars, the plurality of threaded steel bars are suitable for being pre-buried on the base.

[0009] In some embodiments, the square wood and the insulating plate are connected by cementation.

[0010] In some embodiments, the anti-collision base and the outer side of the steel pipe column are both sprayed with yellow and black warning strips.

[0011] In some embodiments, the anti-collision base is a prefabricated part.

[0012] In some embodiments, the steel bars on the top of the anti-collision base are connected in groups of two through channel steel pressure plates and nuts.

[0013] In some embodiments, the threaded steel bars of the base are buried at least 1.5 m into the base and exposed about 0.65 m above the original ground. The relative positions of the threaded steel bars correspond to the pre-opened anchor holes of the anti-collision base.

[0014] In some embodiments, the channel steel beam is a No. 10 channel steel beam, and square timber with a spacing of 60 cm is laid on the top of the channel steel beam.

[0015] In some embodiments, the tops of each row of steel pipe columns are connected into a whole using channel steel longitudinal beams.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The design of full-coverage insulation boards ensures a safe distance between construction machinery and high-voltage lines, greatly improving construction safety.

[0018] 2. The anti-collision base adopts a prefabricated design, which is easy to install, disassemble and reuse, improving construction efficiency and reducing costs.

[0019] 3. The overall structure is stable and reliable, and can effectively cope with the complex construction environment under high-voltage lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the high-voltage line height limit protection frame structure provided by the utility model;

[0021] Figure 2 Anchor diagram of the anti-collision base provided by the utility model;

[0022] Among them, 1-high-voltage line; 2-steel pipe column; 3-anti-collision base; 4-anchor hole; 5-embedded flange steel plate; 6-anchor bolt; 7-flange nut; 8-high-strength precision-rolled threaded steel bar; 9-No. 10 channel steel pressure plate; 10-nut; 11-No. 10 channel steel beam; 12-square timber; 13-insulation board; 14-foundation pit; 15-yellow and black warning strip; 16-No. 10 channel steel longitudinal beam; 17-base. DETAILED DESCRIPTION

[0023] See also Figure 1 and Figure 2The utility model discloses a high -voltage line lower limit high protection frame structure is suitable for the vertical distance of keeping safety between high -voltage line 1 below and high -voltage line 1. The protection frame structure includes two rows of steel pipe stand 2, a plurality of anticollision base 3, protective net and a plurality of threaded steel bars 8, and two rows of steel pipe stand 2 are symmetrically arranged, and each row of steel pipe stand includes a plurality of stand columns arranged at intervals. The anticollision base 3 is provided with a pre-buried flange steel plate 5 on the top, the steel pipe stand 2 is connected with the anticollision base 3 by flange bolt 6, 7, the anticollision base 3 is provided with anchor hole 4 on four corners respectively, and the anchor hole 4 is suitable for being connected with threaded steel bar 8.

[0024] The protective net includes channel steel cross beam 11, square wood 12 and insulating plate 13, two rows of corresponding stand 2 are provided with channel steel cross beam 11 on the top, the channel steel cross beam 11 is provided with square wood 12 on the top to form a grid, and the square wood 12 is provided with insulating plate 13 on the top. The plurality of threaded steel bars 8 are suitable for being pre-buried on the base. Each row of steel pipe stand is connected into a whole by channel steel longitudinal beam on the top.

[0025] The square wood 12 and the insulating plate 13 are connected by cementing.

[0026] In the embodiment, the anticollision base 3 and the steel pipe stand 2 outside are all sprayed yellow and black warning strips 15.

[0027] Optionally, the anticollision base 3 is a prefabricated part.

[0028] The steel bars on the top of the anticollision base 3 are connected by channel steel pressing plate 9 and nut 10 in pairs.

[0029] In some embodiments, the threaded steel bar 8 of the base is buried in the base not less than 1.5m, and about 0.65m is exposed to the original ground, and the relative position of the threaded steel bar 8 corresponds to the pre-opened anchor hole 4 of the anticollision base 3.

[0030] For example, the two rows of columns in the height-limiting protective frame utilize φ250mm x 3.5mm steel pipe columns 2, made of Q235 steel. Columns in the same row are spaced 6 meters apart. The base of the steel pipe columns 2 is a reinforced concrete square anti-collision base 3 (measuring 0.5m x 0.5m x 0.5m). A pre-embedded flange steel plate 5 (0.35m in diameter, 10mm thick) with four anchor bolts is pre-embedded on the top of the base. The steel pipe columns 2 are connected to the anti-collision base 3 using semi-flange bolts 6 and 7. A φ50mm anchor hole 4 is provided at each of the four corners of the anti-collision base (approximately 50mm from the edge). After the site is leveled, four φ32mm high-strength, precision-rolled threaded steel bars 8 are pre-buried within the base 3, embedded at least 1.5m into the base 17 and protruding approximately 0.65m above the surface. The relative positions of the four high-strength, precision-rolled threaded steel bars 8 correspond to the pre-opened anchor holes 4 in the anti-collision base 3. The anti-collision base 3 is prefabricated and reusable. During installation, the anchor holes 4 are aligned with the four high-strength, precision-rolled, threaded steel bars 8 on the base. After insertion, high-strength nuts 10 are pressed against the top of the anti-collision base 3, two at a time, using No. 10 channel steel pressure plates 9 (with holes corresponding to the high-strength steel bars, with the notches facing upwards) to secure the steel pipe columns 3.

[0031] No. 10 channel steel beams 11 are installed atop two rows of corresponding steel pipe columns (3). Then, square timbers 12 are laid atop the beams (11) at 60cm intervals. Finally, insulation panels 13 are laid atop the timbers 12, and the timbers 12 and insulation panels 13 are bonded together. A single row of steel pipe columns (2) is connected to the top with No. 10 channel steel longitudinal beams 16. The outer sides of the anti-collision base and steel pipe columns are sprayed with yellow and black warning strips 15 for aesthetic purposes, visual guidance, and warning purposes. The minimum vertical distance h between the insulation panels of the protective frame and the high-voltage lines meets regulatory requirements. First, the design of a fully insulated protective frame provides ample operating space for ground construction machinery, ensuring a safe vertical distance from the high-voltage lines. Second, the anti-collision base is prefabricated and anchored to the ground, offering the advantages of simple and quick installation, high turnover rate, low cost, and safety.

Claims

1. A high-voltage line height limit protection frame structure, characterized in that: The structure includes Two rows of steel pipe columns, the two rows of steel pipe columns are symmetrically arranged on the left and right, and each row of steel pipe columns includes a plurality of columns arranged at intervals; Multiple anti-collision bases, each of which has a pre-buried flange steel plate on its top, the steel pipe column and the anti-collision base are connected with flange bolts, and anchor holes are respectively provided on the four corners of the anti-collision base, and the anchor holes are suitable for connection with threaded steel bars; A protective net, comprising channel steel beams, square timbers and insulating panels, wherein the channel steel beams are mounted on top of two rows of steel pipe columns, and square timbers are laid on top of the channel steel beams to form a grid, and insulating panels are laid on top of the square timbers; A plurality of threaded steel bars are suitable for being pre-buried in a base.

2. The high-voltage line height limit protection frame structure according to claim 1 is characterized in that: The square timber and the insulation board are connected by gluing.

3. The high-voltage line height limit protection frame structure according to claim 1 is characterized in that: The outer sides of the anti-collision base and the steel pipe column are sprayed with yellow and black warning strips.

4. The high-voltage line height limit protection frame structure according to claim 1, characterized in that: The anti-collision base is a prefabricated part.

5. The high-voltage line height limit protection frame structure according to claim 1 is characterized in that: The steel bars on the top of the anti-collision base are connected in groups of two through channel steel pressing plates and nuts.

6. The high-voltage line height limit protection frame structure according to claim 1, characterized in that: The threaded steel bars of the base are buried in the base for no less than 1.5m and exposed about 0.65m from the original ground. The relative positions of the threaded steel bars correspond to the pre-opened anchor holes of the anti-collision base.

7. The high-voltage line height limit protection frame structure according to claim 1, characterized in that: The channel steel beam is a No. 10 channel steel beam, and square timber with a spacing of 60 cm is laid on the top of the channel steel beam.

8. The high-voltage line height limit protection frame structure according to claim 1, characterized in that: The top of each row of steel pipe columns is connected into a whole by channel steel longitudinal beams.

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