CN217001670U

CN217001670U - Be used for quiet root of boring to plant stake enlarged footing construction drill bit

Info

Publication number: CN217001670U
Application number: CN202123328227.3U
Authority: CN
Inventors: 舒佳明; 张日红; 曹伟伟; 严天龙; 邱风雷
Original assignee: Ningbo Zcone High Tech Co ltd
Current assignee: Ningbo Zcone High Tech Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-19
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to a drill bit for static drilling rooted pile expanded head construction, which comprises a drill bit with a drill rod, wherein the drill bit comprises an expanded wing and a telescopic connecting assembly, the expanded wing is connected to the radial edge of the drill bit through the telescopic connecting assembly, and the expanded wing is opened through the expansion of the telescopic connecting assembly or folded through the retraction of the telescopic connecting assembly; the expanding wings are at least provided with two expanding wings which are uniformly distributed at the radial position of the drill bit, the length direction of the expanding wings is parallel to the axial direction of the drill bit, and the cylindrical bottom expanding is realized by driving the opened expanding wings through the rotation of the drill bit; the beneficial effects of the utility model are as follows: adopt above-mentioned technical scheme, compare with prior art, will enlarge the wing through setting up flexible coupling assembling and connect on the drill bit, can directly open and can accomplish through the drill bit rotation and expand the end effect and need not the drill bit and sweep from top to bottom, also can guarantee to expand end cylinder effect simultaneously with enlarging the wing.

Description

Be used for quiet root of boring to plant stake enlarged footing construction drill bit

Technical Field

The utility model belongs to the technical field of drill bits for engineering construction, and particularly relates to a drill bit for static drilling of an expanded head of a rooted pile.

Background

At present, the static drilling root-implanted pile has a large application scene in engineering as a mature non-soil-squeezing precast pile implantation technology, and the enlarged head process plays a significant role in popularization and application of the process. At present, as shown in the attached drawings 1 to 4, the construction process of the expanding head adopts a hydraulic system, the expanding wings of the drill bit are opened by a lever principle, the expanding wings rotate to form an expanding circle after being opened, and the expanding wing can sweep up and down while rotating for multiple times to achieve the bottom expanding effect. The expansion wing is opened the back and is rotated and only can form a less expansion cylinder of height, need sweep through the rotatory limit in the lower side of going up many times and just can obtain the higher expansion effect of height, need sweep from top to bottom many times and influence the efficiency of construction on the one hand, on the other hand is rotatory, hardly guarantee after sweeping that the bottom expanding part is the expansion cylinder completely, has possibilities such as undergauge.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a drill bit for static drilling of an expanded head of a rooted pile, which can complete the bottom expanding effect without up-and-down sweeping through rotation and can ensure the bottom expanding cylindrical effect.

The utility model aims to solve the technical scheme that the drill bit for static drilling root-planting pile expanding head construction comprises a drill bit with a drill rod, wherein the drill bit comprises an expanding wing and a telescopic connecting assembly, the expanding wing is connected to the radial edge of the drill bit through the telescopic connecting assembly, and the expanding wing is opened through the expansion of the telescopic connecting assembly or the expanding wing is folded through the contraction of the telescopic connecting assembly; the expanding wings are at least provided with two expanding wings which are uniformly distributed at the radial position of the drill bit, the length direction of the expanding wings is parallel to the axial direction of the drill bit, and the expanded expanding wings are driven by the rotation of the drill bit to realize cylindrical bottom expanding.

The beneficial effects of the utility model are as follows: adopt above-mentioned technical scheme, compare with prior art, will enlarge the wing through setting up flexible coupling assembling and connect on the drill bit, can directly open and can accomplish the bottom expanding effect through the drill bit rotation and need not the drill bit and sweep from top to bottom, also can guarantee the bottom expanding cylinder effect simultaneously.

Preferably, the telescopic connecting assembly comprises a connecting rod and a hydraulic oil cylinder, one end of the connecting rod is hinged to the expansion wing, the other end of the connecting rod is hinged to a connecting block arranged on the drill bit, and the driving end of the hydraulic oil cylinder is hinged to the end of the connecting rod hinged to the connecting block; the length of the hydraulic oil cylinder is controlled through hydraulic pressure and flow, the expansion wing is opened through a lever principle, and the effect of expanding the large extension length of the wing is achieved through the extension length of a small hydraulic oil cylinder.

Preferably, the number of the connecting rods is at least two, each connecting rod corresponds to one hydraulic oil cylinder, and the hydraulic oil cylinders are communicated with an oil pipe in the drill rod in a serial connection mode; the pressure of each hydraulic oil cylinder is ensured to be the same in the control process, so that the opening effect of the expansion wing can be better controlled.

Preferably, the connecting rods are distributed at equal intervals along the axial direction of the drill bit, and the interval is 500mm to 1500 mm; the distance between the connecting rods can be adjusted according to the length of the expansion wings, and the connection stability between the expansion wings and the connecting rods is ensured.

Preferably, the telescopic connecting assembly comprises a linear hydraulic oil cylinder arranged on the drill bit, and the driving end of the linear hydraulic oil cylinder is connected with the expansion wing; the length of the linear hydraulic oil cylinder is controlled by hydraulic pressure and flow to directly push out the extended wing in the horizontal direction, and the length pushed out by the linear hydraulic oil cylinder is the extended length of the extended wing, so that the effect of opening the extended wing is achieved.

Preferably, at least two linear hydraulic oil cylinders are arranged, the linear hydraulic oil cylinders are distributed in parallel with the radial direction of the drill bit, and the linear hydraulic oil cylinders are communicated with an oil pipe in the drill rod in a series connection mode; when the linear hydraulic oil cylinders are ejected out, the horizontal opening of the expansion wing is ensured, and meanwhile, the pressure of each linear hydraulic oil cylinder is the same in the control process, so that the opening effect of the expansion wing can be better controlled.

Preferably, the linear hydraulic oil cylinders are distributed at equal intervals along the axial direction of the drill bit, and the interval is 500-1500 mm; the distance between the linear hydraulic oil cylinders can be adjusted according to the length of the expansion wing, and the connection stability between the expansion wing and the linear hydraulic oil cylinders is ensured.

Preferably, the length of the enlarging wing is greater than or equal to twice the diameter of the enlarged base; not only the height of the bottom expanding is increased, but also the construction efficiency of the bottom expanding is accelerated.

Preferably, the number of the expansion wings is two to four and is uniformly distributed in a radial direction of the drill bit; therefore, the expanding wings on the drill bit can be suitable for drilling different bottom expanding diameters, so that the construction speed and the bottom expanding quality are improved.

Drawings

Fig. 1 is a schematic view illustrating an opening structure of an expansion wing of a conventional expansion head construction drill.

Fig. 2 is a schematic view of a closing structure of an expansion wing of a conventional expansion head construction drill.

Fig. 3 is a schematic structural view of an expansion wing of a conventional enlarged head construction drill after being opened in a bottom expansion.

Fig. 4 is a schematic view of a drilling structure of an expansion wing of a conventional enlarged head construction drill in an enlarged bottom.

Fig. 5 is a schematic view of an enlarged wing closure structure of a telescoping connection assembly according to an embodiment of the utility model.

Fig. 6 is an illustration of an enlarged wing opening configuration of a telescoping connection assembly in accordance with an embodiment of the utility model.

Fig. 7 is a schematic view of an enlarged wing base structure of a telescopic connection assembly according to an embodiment of the utility model.

Fig. 8 is a schematic view of an enlarged wing closure structure of a second telescoping connection assembly according to an embodiment of the utility model.

Fig. 9 is an illustration of an enlarged wing opening configuration of a second telescoping connection assembly in accordance with an embodiment of the present invention.

Fig. 10 is a schematic view of an enlarged wing base structure of a second telescopic connecting assembly according to an embodiment of the present invention.

The reference numbers in the drawings are respectively: 1. a drill bit; 2. enlarging the wings; 3. a telescopic connecting component; 4. expanding the bottom; 5. Cutting die; 11. connecting blocks; 31. a connecting rod; 32. a hydraulic cylinder; 33. and a linear hydraulic oil cylinder.

Detailed Description

The utility model will be described in detail below with reference to the following drawings: as shown in fig. 5 to 10, the drill bit 1 comprises a drill bit 1 with a drill rod, wherein the drill bit 1 comprises an expansion wing 2 and a telescopic connection assembly 3, the expansion wing 2 is connected to the radial edge of the drill bit 1 through the telescopic connection assembly 3, the expansion wing 2 is opened through the expansion of the telescopic connection assembly 3 or the expansion wing 2 is folded through the retraction of the telescopic assembly 3, when the expansion wing 2 is folded, a cutting die 5 on the drill bit 1 corresponding to the expansion wing 2 is provided with a notch (not shown) for the insertion of the expansion wing 2, so that the diameter of the folded expansion wing 2 is smaller than that of the drill bit 1, and the drill bit 1 can be conveniently used when the bottom is not expanded; the expansion wings 2 are at least provided with two expansion wings which are uniformly distributed at the radial position of the drill bit 1, the length direction of the expansion wings 2 is parallel to the axial direction of the drill bit 1, and the cylindrical bottom expanding 4 is realized by driving the expanded expansion wings 2 through the rotation of the drill bit 1; after the expansion wing is opened, the expansion wing is a line in the shape of a long strip instead of a conventional point, when the expansion wing rotates, a plane is formed instead of a conventional line, the whole bottom expansion effect can be formed only by rotating, the bottom expansion effect can be formed without rotating and sweeping up and down, the bottom expansion construction efficiency is accelerated, and meanwhile the bottom expansion construction quality can be better guaranteed.

Embodiment one of the telescopic connecting assembly 3: as shown in fig. 5 to 7, the telescopic connection assembly 3 includes a connecting rod 31 and a hydraulic cylinder 32, one end of the connecting rod 31 is hinged on the enlarged wing 2, the other end of the connecting rod 31 is hinged on a connection block 11 provided on the drill bit 1, and a driving end of the hydraulic cylinder 32 is hinged with an end of the connecting rod 31 hinged on the connection block 11; three connecting rods 31 are arranged, each connecting rod 31 corresponds to one hydraulic oil cylinder 32, and the hydraulic oil cylinders 32 are communicated with an oil pipe in the drill rod in a serial connection mode; the connecting rods 31 are distributed at equal intervals along the axial direction of the drill bit 1, and the interval A is 1000 mm.

Embodiment two of telescopic connection assembly 3: as shown in fig. 8 to 10, the telescopic connecting assembly 3 comprises a linear hydraulic cylinder 33 mounted on the drill bit 1, and the driving end of the linear hydraulic cylinder 33 is connected with the expansion wing 2; three linear hydraulic oil cylinders 33 are arranged, the linear hydraulic oil cylinders 33 are distributed in parallel with the radial direction of the drill bit 1, and the linear hydraulic oil cylinders 33 are communicated with an oil pipe in the drill rod in a serial connection mode; the linear hydraulic oil cylinders 33 are distributed at equal intervals along the axial direction of the drill bit 1, and the interval A is 1000 mm.

The length of each expanding wing can be adjusted according to the condition of the diameter of the expanded base, and the length of the expanding wing 2 is more than or equal to two times of the diameter of the expanded base 4.

The number of the expanding wings 2 can be increased according to the soil condition of the bottom expanding part and the diameter of the bottom expanding part, and the number of the expanding wings 2 is two to four and is uniformly distributed at the radial position of the drill bit 1, so that the construction speed and the bottom expanding quality are improved.

The working principle of the drill bit for the construction of the enlarged footing is as follows: when the equipment is adopted for construction, when a drill hole is drilled to a preset depth and bottom expanding construction needs to be started, the opening condition of the expanding wing is controlled by controlling hydraulic pressure and flow through an oil pipe inside a drill rod, and the hydraulic system controls the expanding wing to be opened in two modes: the method is characterized in that the length of a linear hydraulic oil cylinder 33 is controlled through hydraulic pressure and flow to directly eject the extended wing in the horizontal direction, and the ejected length of the linear hydraulic oil cylinder 33 is the extended length of the extended wing, so that the effect of opening the extended wing is achieved; secondly, the length of the hydraulic oil cylinder 32 is controlled through hydraulic pressure and flow, the expansion wing is opened through a lever principle, and the effect of expanding the large extension length of the wing is achieved through the extension length of the small hydraulic oil cylinder 32. When the difference between the bottom expanding diameter and the drilling diameter is smaller, the bottom expanding effect can be achieved by adopting a mode I; when the diameter of the expanded bottom is different from the diameter of the drilled hole greatly, the bottom expanding effect can be achieved by adopting the mode two.

The present invention is not limited to the above embodiments, and any changes in the shape or material composition, or any changes in the structural design provided by the present invention, are all modifications of the present invention, and should be considered to be within the scope of the present invention.

Claims

1. The utility model provides a be used for quiet brill to plant a stake enlarged footing construction drill bit, includes drill bit (1) that has the drilling rod, its characterized in that: the drill bit (1) comprises an expansion wing (2) and a telescopic connecting assembly (3), the expansion wing (2) is connected to the radial edge of the drill bit (1) through the telescopic connecting assembly (3), and the expansion wing (2) is opened through the expansion of the telescopic connecting assembly (3) or the expansion wing (2) is folded through the contraction of the telescopic connecting assembly (3); the expanding wings (2) are at least provided with two expanding wings which are uniformly distributed at the radial positions of the drill bit (1), the length direction of the expanding wings (2) is parallel to the axial direction of the drill bit (1), and the expanding wings (2) are driven to be opened by the rotation of the drill bit (1) to realize cylindrical bottom expanding (4).

2. The drill bit for static drilling of the expanded footing construction of the root-planting pile as claimed in claim 1, wherein: the telescopic connecting assembly (3) comprises a connecting rod (31) and a hydraulic oil cylinder (32), one end of the connecting rod (31) is hinged to the expansion wing (2), the other end of the connecting rod (31) is hinged to a connecting block (11) arranged on the drill bit (1), and the driving end of the hydraulic oil cylinder (32) is hinged to the end of the connecting rod (31) hinged to the connecting block (11).

3. The bit for static drilling of the enlarged footing construction of the rooted pile according to claim 2, wherein: the drill rod is characterized in that the number of the connecting rods (31) is at least two, each connecting rod (31) corresponds to one hydraulic oil cylinder (32), and the hydraulic oil cylinders (32) are communicated with oil pipes in the drill rod in a serial connection mode.

4. The bit for static drilling of the enlarged footing construction of the rooted pile according to claim 3, wherein: the connecting rods (31) are distributed at equal intervals along the axial direction of the drill bit (1), and the interval A is 500 mm-1500 mm.

5. The drill bit for static drilling of the expanded footing construction of the root-planting pile as claimed in claim 1, wherein: the telescopic connecting assembly (3) comprises a linear hydraulic oil cylinder (33) installed on the drill bit (1), and the driving end of the linear hydraulic oil cylinder (33) is connected with the expansion wing (2).

6. The bit for static drilling of the enlarged footing construction of the rooted pile according to claim 5, wherein: the drill rod is characterized in that at least two linear hydraulic oil cylinders (33) are arranged, the linear hydraulic oil cylinders (33) are distributed in parallel with the radial direction of the drill bit (1), and the linear hydraulic oil cylinders (33) are communicated with an oil pipe in the drill rod in a serial connection mode.

7. The bit for static drilling of the enlarged footing construction of the rooted pile according to claim 6, wherein: the linear hydraulic oil cylinders (33) are distributed at equal intervals along the axial direction of the drill bit (1), and the interval A is 500-1500 mm.

8. The bit for static drilling of the enlarged footing construction of the rooted pile according to claim 1, 2 or 5, wherein: the length of the expanding wing (2) is more than or equal to two times of the diameter of the expanding base (4).

9. The drill bit for static drilling of the expanded footing construction of the root-planting pile as claimed in claim 1, wherein: the number of the expansion wings (2) is two to four and is uniformly distributed in the radial direction of the drill bit (1).