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Hole-forming drilling mahcine with planetary movement for foundation engineering with large-diameter piles

A basic engineering and large-diameter technology, applied in the field of large-diameter drilling tools, can solve problems such as difficulties, and achieve fast and thorough hole cleaning, efficient slag removal, and brand-new structural principles

Inactive Publication Date: 2002-12-04
张昌平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the current difficulties in forming holes for large-diameter pile foundations, the present invention provides a large-diameter pile foundation engineering hole-forming drilling tool with a star-like movement of the drill bit

Method used

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  • Hole-forming drilling mahcine with planetary movement for foundation engineering with large-diameter piles
  • Hole-forming drilling mahcine with planetary movement for foundation engineering with large-diameter piles
  • Hole-forming drilling mahcine with planetary movement for foundation engineering with large-diameter piles

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Embodiment Construction

[0016] exist figure 1 In the first embodiment, the drill frame is welded by the upper bracket ring (1), the lower bracket ring (2) and the inclined struts (3) between them, and the power shaft (4) is a hollow garden rod, which is connected with the upper The bracket ring (1) is fixed with bearings, and in the lower bracket ring (2), the central gear (5) is fixed on the power shaft (4) with keys, and the three planetary gears (6) are evenly distributed around the central gear (5) , the planetary gear (6) and the sun gear (5), the inner teeth of the upper part of the gear ring (7) are meshed at the same time, the gear ring (7) and the lower bracket ring (2) are connected together with screws, the inner circle of the gear ring (7) The lower section of the circumference is a smooth cylindrical surface, which cooperates with the outer circumference of the tray (8). The tray (8) is a smooth disc with three planetary holes corresponding to the planetary gear (6). (9), ring gear is i...

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Abstract

A planetary hole-forming drill for the large-diameter piles in foundation engineering is composed of drilling frame, power shaft, gear set, drill rod and drill head. The said drilling frame consists of upper and lower supporting rings and oblique supporting rods through welding. The said gear set comprises a central gear fixed to power shaft and 3 planetary gears, 1-10 drill rods are fixed under each planetary gear via bearings and each drill rod has a drill head. It is suitable for the piles with 1-5 m of diameter.

Description

Technical field: [0001] The invention relates to hole-forming equipment for pile foundation engineering in construction, that is, a drilling tool for drilling large-diameter holes in foundations. Background technique: [0002] In engineering construction, the pile foundation is usually firstly driven. Currently, impact hammers and rotary drills are widely used in the construction of pile foundations with diameters below 2 meters. Generally, the construction of small-diameter pile foundations is relatively smooth, but in super-large diameters, that is, more than 2 meters The following problems exist in the construction of pile foundations with large diameters: 1. The equipment is heavy, the cost is high, the labor intensity is high, and the progress is slow. 2. The risk is high, and the hole is prone to collapse. Problems such as well deviation, retention and wellhead subsidence. 3. The sediment at the bottom of the hole remains and cannot be completely removed. Invention ...

Claims

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Application Information

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IPC IPC(8): E21B11/00
Inventor 张昌平
Owner 张昌平
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