Square pile rotary drilling device for achieving square pore-forming and rotary drilling method thereof

A square and rectangular technology is applied in the field of square pile rotary excavation devices for realizing square holes, which can solve the problems of insecurity, the inability of rotary excavators to directly form square holes, and the low construction efficiency of square piles. Operational risks and the effect of shortening the construction period

Pending Publication Date: 2019-04-26
四川省交通勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a square pile rotary digging device and a rotary digging method for realizing square hole formation, so as to solve the problem in the prior art that the rotary digging machine cannot directly form square holes, resulting in low construction efficiency and unsafety of square piles , to achieve the purpose of forming square holes directly through the rotary excavator and efficiently carrying out the construction of cast-in-place square piles

Method used

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  • Square pile rotary drilling device for achieving square pore-forming and rotary drilling method thereof
  • Square pile rotary drilling device for achieving square pore-forming and rotary drilling method thereof
  • Square pile rotary drilling device for achieving square pore-forming and rotary drilling method thereof

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Embodiment 1

[0036] like figure 1 and figure 2 The shown a kind of square pile rotary digging device that realizes square hole formation, comprises rotating part one 1, several rotating parts two 2 that rotate with described rotating part one 1, described rotating part one 1, rotating part two 2 The rotating shafts are parallel to each other, and the rotating part one 1 drives the main drill bit 5 to rotate, and each rotating part two 2 drives an auxiliary drill bit 4 to rotate, and all auxiliary drill bits 4 are positioned above the main drill bit 5; The projection in the rotation plane of the drill bit 5 partially coincides with the main drill bit 5 ; it also includes a square scraper 6 located above the auxiliary drill bit 4 . In this embodiment, during drilling construction, the main drill bit must first contact the soil layer to form a corresponding main hole, and then the auxiliary drill bit touches the soil layer as it continues to descend. Partial overlap, so several auxiliary d...

Embodiment 2

[0042] like Figure 3 to Figure 5 In the illustrated square pile rotary digging device for forming holes in a square shape, on the basis of Embodiment 1, the first rotating member 1 and the second rotating member 2 are located above the square scraping member 6 . The rotating part one 1 is the main gear, and the rotating part two 2 is the auxiliary gear meshed with the main gear. The drill bit 5 and the auxiliary drill bit 4 are connected, and the square scraper 6 does not rotate with the connecting rod 3 . The square scraper 6 is provided with a through hole 601 for the connecting rod 3 to pass through. The connecting rod 3 is covered with a bearing 602 , and the bearing 602 is fixed on the inner wall of the through hole 601 . There are four auxiliary drill bits 4 in total, and the centers of the four auxiliary drill bits 4 are in the same plane, and the centers of the four auxiliary drill bits 4 are four vertices of a rectangle. The projection of the center of the main dri...

Embodiment 3

[0044] like Image 6 As shown, in this embodiment, the main hole formed by the main drill bit 5 is inscribed on the opposite sides of the square formed by the projection of the square scraper 6. The hole formed by this embodiment is not a completely regular square hole, but For a nearly square cast-in-place hole, the square scraper 6 mainly plays the role of leveling and trimming the hole wall. Although the square shape of this structure is irregular, compared with the conventional cylindrical pile foundation, the approximately square cast-in-place pile foundation can still improve the effect of strengthening the foundation and adapt to more complex and dangerous geological environments. It also realizes the direct operation of the rotary excavator, and still overcomes many disadvantages of manpower digging.

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Abstract

The invention discloses a square pile rotary drilling device for achieving square pore-forming and a rotary drilling method thereof. The device comprises a first rotating part and a plurality of second rotating parts which rotate along with the first rotating part, wherein rotating shafts of the first rotating part and the second rotating parts are in parallel, the first rotating part drives a main drill to rotate, each second rotating part drives an accessory drill to rotate, and all the accessory drills are located above the main drill; projections of the accessory drills in a rotating planeof the main drill partially coincide with the main drill; the device further comprises a square scraping part located above the accessory drills. The invention aims to provide the square pile rotarydrilling device for achieving square pore-forming and the rotary drilling method thereof to solve the problems that in the prior art, square pores cannot be formed by a rotary drilling machine directly, so that square pile construction is low in efficiency and unsafe; the purpose of forming the square pores directly through the rotary drilling machine to efficiently conduct cast-in-place square pile construction can be achieved.

Description

technical field [0001] The invention relates to the field of pile foundations, in particular to a square pile rotary digging device and a rotary digging method for realizing square hole formation. Background technique [0002] Rotary drilling rig is a construction machine suitable for hole-forming operations such as bridge piles of various highways, railways and other transportation facilities, large buildings, load-bearing structural piles of ports and wharves, and urban viaduct bridge piles. It is widely used in the construction of sandy soil, cohesive soil, silty soil and other soil layers. This type of drilling rig generally adopts hydraulic crawler telescopic chassis, self-lifting and collapsible drill mast, telescopic drilling rod, automatic detection and adjustment of verticality, digital display of hole depth, etc. The operation of the whole machine generally adopts hydraulic pilot control and load sensing. It has the characteristics of light and comfortable operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B10/62E21B10/26
CPCE21B7/001E21B10/26E21B10/62
Inventor 袁松王希宝黎良仆
Owner 四川省交通勘察设计研究院有限公司
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