Multi-purpose pile-forming equipment capable of achieving forming of various piles

A piling and equipment technology, which is applied in drilling equipment, drilling equipment and methods, sheet pile walls, etc., can solve the problems of difficult to guarantee pile quality, high mechanical energy consumption, and high piling cost, so as to save the cost of prefabrication , low cost, high horizontal bearing capacity

Pending Publication Date: 2019-10-08
WUHAN SURVEYING GEOTECHN RES INST OF MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This construction method often requires two types of machinery to form piles, which is expensive and consumes a lot of mechanical energy.
[0005] In addition, in the treatment of weak ground, concrete piles are also commonly used due to their high bearing capacity, but the commonly used immersed tube grouting in weak soil layers often forms holes through

Method used

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  • Multi-purpose pile-forming equipment capable of achieving forming of various piles
  • Multi-purpose pile-forming equipment capable of achieving forming of various piles
  • Multi-purpose pile-forming equipment capable of achieving forming of various piles

Examples

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Comparison scheme
Effect test

example 1

[0061] Example 1. The multi-purpose pile-forming equipment of the present invention is used to construct new-type pipe piles with intermediate high pressure cement soil and peripheral concrete. The specific construction process is as follows Figure 26 Shown: First, the central gear 13-3 is controlled to rotate a certain angle in the reverse direction through the blade expansion control motor 10-2, and the stirring blade 13-2 is driven to rotate a certain angle in the positive direction around the rotation positioning shaft 13-6, thereby reducing the blade rotation diameter to T1 , T1 is smaller than the inner diameter of the middle sleeve 12-2; the drill bit rotating motor 10-1 drives the cone tip and the mixing blade 13-2 fixed on the cone tip to rotate, and controls the entire drill tool to drill down into the soil. The rotating diameter of the mixing blade 13-2 is smaller than the inner diameter of the middle sleeve 12-2. During the downward drilling of the drilling tool, the...

example 2

[0062] Example 2: The multi-purpose pile forming equipment of the present invention is used to construct the external cement-soil pile and the internally cast-in-situ concrete core pile of the cement-soil mixing pile. The specific construction process is as follows Figure 27 Shown: First, the central gear 13-3 is controlled to rotate a certain angle in the forward direction through the blade expansion control motor 10-2, and the stirring blade 13-2 is driven to rotate a certain angle in the reverse direction around the rotation positioning shaft 13-6, thereby expanding the blade rotation diameter to T3 , T3 is greater than the outer diameter of the outer sleeve 12-3; the drill bit rotating motor 10-1 drives the cone tip and the mixing blade 13-2 fixed on the cone tip to rotate, and controls the entire drill tool to drill down into the soil layer. In the process of continuously sinking into the soil layer, open the second injection port 15 on the outer sleeve 12-3, inject the cem...

example 3

[0063] Example 3: The multi-purpose pile forming equipment of the present invention is used to construct cement-soil mixing piles. The construction process is the same as the previous construction process in Example 2. There is no need to reduce the blades to T1 before the mixing head is raised, and there is no need to move the drill bit. It is separately lifted into the middle sleeve 12-2, and the cement-soil mixing pile can be completed by spraying and mixing the cement slurry during the whole process. The whole piling process is like Figure 28 Shown.

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Abstract

The invention provides multi-purpose pile-forming equipment capable of achieving forming of various piles. The pile-forming equipment comprises a base, an upright frame and a stirring head; the stirring head comprises a drilling control box, a motive power box, an oil pressure adjusting box, a drilling rod and a conical drill bit with telescopic blades; the motive power box is mounted in the drilling control box through a lifting mechanism; a drill bit rotating motor is disposed in the motive power box; the drilling rod comprises an inner-layer sleeve which is connected with the drill bit rotating motor, an outer-layer sleeve which is connected with the drilling control box and a middle-layer sleeve, wherein the lower end of the inner-layer sleeve is connected with the conical drill bit; an opening-closing baffle is disposed at the bottom of an annular cavity between the outer-layer sleeve and the middle-layer sleeve; an annular oil pressure cavity with a movable baffle is disposed between the middle-layer sleeve and the inner-layer sleeve; the oil pressure adjusting box communicates with the annular oil pressure cavity; and spraying holes are formed in the drill bit and the outer-layer sleeve correspondingly. Construction of various piles which are different in material and pile diameter can be achieved through the equipment, the engineering adaptability is high, and the pile-forming quality is better.

Description

Technical field [0001] The invention relates to construction machinery and equipment for foundation treatment projects, in particular to a multi-purpose pile forming equipment which can realize the formation of multiple pile types. Background technique [0002] Due to the advantages of economical, flexible layout, low construction noise, and low pollution, cement-soil mixing piles have been widely used in soft soil foundation reinforcement to enhance vertical bearing capacity, soft soil areas, foundation pits, and soft soil areas. In the construction of the anti-seepage and water-stop curtain of the foundation pit, it meets the construction technical requirements of different types of construction projects such as the increase of the vertical bearing capacity, the control of the foundation settlement, the enhancement of the sidewall stability and the water interception in an economical and simple way. However, due to engineering needs, under different types of soil and bearing re...

Claims

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Application Information

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IPC IPC(8): E02D5/46E21B7/02E21B10/62
CPCE02D5/46E21B7/022E21B10/62
Inventor 谢亮陈斌昌钰刘军叶坤李亮姚汾
Owner WUHAN SURVEYING GEOTECHN RES INST OF MCC
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