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A bending device for serpentine laying of large cross-section power cables

A cable snake and large-section technology, applied in the field of power cable benders, can solve the problems of inadequate control of the snake-shaped wave amplitude, difficulty in forming a snake-shaped bend, and difficulty in cable laying, etc., so as to reduce the investment of construction personnel and ensure the cable The effect of laying and reducing engineering expenses

Active Publication Date: 2018-08-07
STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Focusing on problems such as the difficulty in laying large-section cables, the difficulty in forming serpentine bends, and inadequate control of the amplitude of serpentine waves, the present invention provides a large-section cable that can effectively improve work efficiency and ensure that the serpentine laying of cables meets the technical requirements based on the principle of mechanical leverage. Power cable serpentine laying bender

Method used

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  • A bending device for serpentine laying of large cross-section power cables
  • A bending device for serpentine laying of large cross-section power cables
  • A bending device for serpentine laying of large cross-section power cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the amplitude marking device is a scale 6, and the support rod 3 is provided with a suspension gap 5 for hanging the scale 6. There can be multiple suspension gaps 5, which is convenient for adjusting the position of the scale 6 and adapting to the bending of cables 12 of different heights or amplitudes. Laying.

Embodiment 2

[0028] Such as figure 2 and 4 As shown, the amplitude identification device includes a limit switch 19 , a controller 20 , an alarm circuit 21 , an alarm 16 , a power supply circuit 22 , a power supply 23 and a scale scale 13 arranged on the support rod 3 . The limit switch 19 , the alarm circuit 21 , and the power circuit 22 are respectively electrically connected to the controller 20 ; the alarm 16 is electrically connected to the alarm circuit 21 , and the power supply 23 is electrically connected to the power circuit 22 . The limit switch 19 is an infrared probe 15; the infrared probe 15 is fixedly arranged on the mount 14, and the mount 14 is movably arranged on the support rod 3. The operator adjusts the position of the mounting seat 14 according to the scale scale 13 according to the laying requirements of the cable 12, so that the infrared probe 15 is in a proper position. When the cable 12 is pressed to the desired amplitude, the infrared probe 15 detects the cable...

Embodiment 3

[0033] Such as Figure 4As shown, on the basis of the second embodiment, the pressure sensor 18 is used as the limit switch 19 , the support plate 17 movably connected with the support bar 3 is arranged on the support bar 3 , and the pressure sensor 18 is fixedly arranged on the support plate 17 . The operator adjusts the position of the support plate 17 according to the scale scale 13 according to the laying requirements of the cable 12, so that the pressure sensor 18 is in a proper position. When the cable 12 is pressed to the desired amplitude, the pressure sensor 18 detects the cable 12 and sends a signal to the controller 20. The controller 20 controls the alarm 16 to alarm and informs the operator that the laying amplitude has been reached, so that the operator can accurately and effectively control the cable 12. Shaped laying offset, effectively improving work efficiency.

[0034] The controller 20 can adopt the AT89C51 single-chip microcomputer, which has the characte...

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Abstract

The invention discloses a bending device for snakelike laying of large-section power cables. The bending device comprises a support rod and a pressure rod, wherein a universal joint and a range identifying device are arranged on the support rod; a support seat is arranged at the bottom end of the support rod, and a telescopic joint is arranged at the top end of the support rod; the pressure rod is connected with the support rod through the universal joint; an arc-shaped curved plate is arranged on the pressure rod. Damage of lateral stress and axial stress of the cables during bending to the cables and an operator is effectively eliminated, and personal safety and cable laying in the construction process of engineering are ensured; the bending device can form perpendicular snakelike bends through one-hand operation, input of construction workers is reduced, the working efficiency is effectively improved, the engineering cost is reduced, snakelike laying of the cables meets the technical requirements, and the first pass yield of cable laying quality reaches 100%.

Description

technical field [0001] The invention relates to a power cable bender, in particular to a bender suitable for serpentine laying of large-section power cables. Background technique [0002] With the continuous development of the national economy and the scale of the city, the cable transformation project of 110kV and 220kV overhead lines around the urban area will be gradually promoted. Due to the industrial distribution or dense population in the area where the above overhead lines are located, the power load is relatively large. If cable transformation is required , all need to use large cross-section power cables (the cross-section is 600mm2 and above, the same below), which puts forward better requirements for the construction technology and tools of the laying construction unit. [0003] For power cables, due to real-time changes in ambient temperature and operating load, large thermomechanical stresses will be generated inside the cables, especially for large cross-secti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21F1/04H02G1/06
CPCB21F1/04H02G1/06
Inventor 焦慎华孙小松张勇张林林
Owner STATE GRID SHANDONG ELECTRIC POWER
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