CN219654634U

CN219654634U - Drill bit for hole forming of reverse circulation drilling machine of bored pile

Info

Publication number: CN219654634U
Application number: CN202320729615.2U
Authority: CN
Inventors: 强兴; 刘铮; 宋宽; 阎浩
Original assignee: Shaanxi Construction Engineering Infrastructure Group Co ltd
Current assignee: Shaanxi Construction Engineering Infrastructure Group Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-09-08
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses a drill bit for forming holes of a reverse circulation drilling machine of a bored pile, which comprises a connecting seat, an installing seat, a fixed rod, a threaded rod and a sliding plate.

Description

Drill bit for hole forming of reverse circulation drilling machine of bored pile

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a drill bit for forming holes of a reverse circulation drilling machine of a bored pile.

Background

Along with the emergence of large-scale industry, civil architecture, high-rise building and other projects in recent years, natural foundations can not meet load requirements, and bored piles become foundation forms frequently adopted by building projects due to the advantages of strong adaptability, large bearing capacity, moderate cost, simplicity and convenience in construction and the like. However, in high-rise buildings, bored pile foundations mostly use a apoplexy rock stratum as a bearing stratum. The bored pile hole-forming rock-embedding in the soft soil area generally adopts a cone drill bit, a cone drill bit and a barrel drill bit. The guiding performance of the cone drill bit is poor, the hole is easy to collapse in the hole forming process, the drilling speed is low after entering the rock, and the drill bit needs to jump rod when meeting harder rock stratum and sloping rock stratum. The roller bit has long hole forming time, high cost, expensive bit and heavy weight, and increases the labor intensity and the process cost of construction. When the barrel type drill bit is used for drilling, the teeth arranged on the periphery of the bottom are used for cutting off the peripheral rock after entering the rock, meanwhile, the rock continuously descends along with the drill bit to drill into the barrel, when the drill bit is lifted to a proper position, the side door is folded to hold the rock in the barrel, and the lower pressing door is used for pouring out the rock. Barrel type drills also have expensive and heavy drills, and also need to lift drills to pour out rocks, so that the labor intensity and the process cost of construction are increased. This presents certain difficulties in the construction of cast-in-situ bored piles. The application number 201721082567.3 discloses a drill bit for a bored pile, which belongs to drill bit equipment and aims to provide a drill bit for a bored pile for improving slag discharge rate, and the technical scheme is characterized in that the drill bit for the bored pile is arranged on a drill rod of a drilling machine, downward drilling is performed, slurry is provided with power by a high-pressure pump, is pressed to the bottom of a drilled hole through a hollow slurry filling rod, and forms an upward force on waste residues generated by drilling of a cone-shaped drill bit through positive circulation of the slurry, so that the waste residues are suspended in the slurry, and the drilled hole is discharged through a positive circulation loop; the hollow round platform structure of the boss drill bit can prevent the blocking of large stone blocks or mud blocks, so that the mud has enough space to discharge waste residues from a drilled hole; in addition, the cutting teeth on the outer wall of the boss drill bit can loosen earth drill outside the boss drill bit and provide another channel for mud, so that secondary deslagging is performed, and drilling efficiency is improved. The utility model is suitable for the drill bit of the bored pile. However, the drill bit in this application cannot adjust the diameter of the drill bit with respect to the diameter of the opening, and is inconvenient to use.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the above and/or problems occurring in the prior art of drills for reverse circulation drilling of cast-in-situ bored piles.

Therefore, the utility model aims to provide a drill bit for forming holes of a reverse circulation drilling machine of a bored pile, wherein a support rod is arranged at the bottom of a mounting seat, a fixed ring, a connecting rod and a twist drill bit are respectively arranged at the bottom of the support rod, a support column is arranged at the center of the bottom of the mounting seat, the other end of the support column is connected with the twist drill bit, a mounting plate is arranged on the column shaft of the support column, a fixed rod and a slide rod are arranged on the outer ring of the mounting plate, the slide rod extends out of the outer ring of the fixed ring and is connected with a scraper, one end, close to the fixed rod, of the slide rod is provided with a slide groove, the fixed rod extends into the slide groove, and the length, extending out of the fixed ring, of the slide rod is adjusted by pulling the slide rod, of the drill bit is provided with a caliber, so that the construction is convenient.

In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

a drill bit for reverse circulation drilling of bored piles, comprising:

the bottom of the connecting seat is provided with a connecting groove;

the mounting seat is positioned in the connecting groove, a supporting rod is arranged at the bottom of the mounting seat, a fixing ring is arranged at the bottom of the supporting rod, a connecting rod is arranged at the bottom of the fixing ring, a twist drill bit is arranged at the bottom of the connecting rod, a supporting column is arranged at the center of the bottom of the mounting seat, the bottom end of the supporting column is connected with the top end of the twist drill bit, and a mounting column is arranged on the body of the supporting column;

the fixed rod is installed the installation pole body, the fixed rod body is provided with the slide bar, the slide bar runs through and stretches out the solid fixed ring outer lane, the doctor-bar is installed to the slide bar other end, the slide bar is close to fixed rod one end has seted up the spout, the fixed rod stretches into inside the spout.

As a preferable scheme of the drill bit for forming holes of the reverse circulation drilling machine of the bored pile, the number of the fixing rods is multiple and the fixing rods are uniformly arranged on the outer ring of the mounting column, the number of the sliding rods is consistent with that of the fixing rods, the rod body of the fixing rods is provided with multiple first threaded holes, the rod body of the sliding rods is provided with second threaded holes, and the second threaded holes are consistent with the first threaded holes in number and matched in position.

As a preferable scheme of the drill bit for forming holes of the reverse circulation drilling machine for the bored pile, the utility model further comprises threaded rods, the number of the threaded rods is consistent with that of the fixed rods, the threaded rods penetrate through the second threaded holes and the first threaded holes in a rotating mode, and a rotating button is arranged at the side end of each threaded rod.

As a preferable scheme of the drill bit for forming the hole of the reverse circulation drilling machine of the bored pile, the utility model is characterized in that a second connecting groove is formed at the top of the connecting groove, a limit groove is formed in the side wall of the second connecting groove, and a limit chute is formed in the bottom of the connecting seat.

As a preferable scheme of the drill bit for forming the hole of the reverse circulation drilling machine of the bored pile, a fixed column is arranged at the top of the mounting seat, the fixed column stretches into the second connecting groove, a limit cutting is arranged on the column body of the fixed column, the limit cutting stretches into the limit groove, and a limit hole is formed in the outer ring of the mounting seat.

As a preferable scheme of the drill bit for forming the hole of the reverse circulation drilling machine of the bored pile, the utility model further comprises a sliding plate, wherein the sliding plate is positioned in the limiting chute, a spring is arranged on the side wall of the sliding plate, the other end of the spring is connected with the side wall of the limiting chute, a limiting plate is arranged on the other side wall of the sliding plate, and the limiting plate penetrates through and extends out of the limiting chute and extends into the limiting hole.

Compared with the prior art: through setting up the bracing piece in the mount pad bottom, the bracing piece bottom is provided with solid fixed ring, connecting rod and fluted drill bit respectively, is provided with the support column at mount pad bottom center, and the support column other end is connected with the fluted drill bit, and the support column shaft is provided with the mounting panel, and the mounting panel outer lane is provided with dead lever and slide bar, and the slide bar stretches out solid fixed ring outer lane and is connected with the scraper, and the slide bar is close to dead lever one end and has seted up the spout, and the dead lever stretches into inside the spout, stretches out the length adjustment drill bit trompil bore of solid fixed ring through pulling slide bar sliding adjustment slide bar, convenient construction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following detailed description will be given with reference to the accompanying drawings and detailed embodiments, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. Wherein:

FIG. 1 is a diagram of the whole structure of a drill bit for forming holes of a reverse circulation drilling machine of a bored pile;

FIG. 2 is a diagram of the structure of a drill bit connecting seat of a reverse circulation drilling machine for a bored pile;

FIG. 3 is a diagram of the structure of a drill bit mounting seat for forming holes of a reverse circulation drilling machine of a bored pile;

fig. 4 is a diagram of a drill bit part of a reverse circulation drilling machine for bored piles.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

The utility model provides a drill bit for forming holes of a reverse circulation drilling machine of a bored pile.

Fig. 1 to 4 are schematic structural views showing an embodiment of a drill bit for forming a hole by a reverse circulation drilling machine for a bored pile according to the present utility model, referring to fig. 1 to 4, the drill bit for forming a hole by a reverse circulation drilling machine for a bored pile according to the present embodiment includes a connection base 100, a mounting base 200, a fixing rod 300, a threaded rod 400 and a sliding plate 500.

The connecting seat 100 bottom has seted up spread groove 110, and second spread groove 120 has been seted up at spread groove 110 top, and spacing groove 130 has been seted up to second spread groove 120 lateral wall, and spacing spout 140 has been seted up to the connecting seat 100 bottom, and spacing spout 140 is two and uses spread groove 110 as the central symmetry to set up in the connecting seat 100 bottom.

The mount pad 200 is located inside the spread groove 110, the bracing piece 210 is installed to mount pad 200 bottom, the solid fixed ring 220 is installed to the bracing piece 210 bottom, the bracing piece 210 is a plurality of and forms the sediment space in mount pad 200 bottom, gu fixed ring 220 bottom installs connecting rod 230, the twist drill bit 240 is installed to connecting rod 230 bottom, connecting rod 230 is used for carrying out auxiliary stay to twist drill bit 240, mount pad 200 bottom center installs support column 250, the support column 250 bottom is connected with twist drill bit 240 top, be used for supporting twist drill bit 240 and make twist drill bit 240 can follow mount pad 200 and rotate, support column 250 shaft installs erection column 260, mount pad 200 top installs solid fixed column 270, gu fixed column 270 stretches into inside the second spread groove 120, gu fixed column 270 shaft installs spacing cutting 280, spacing cutting 280 stretches into inside the spread groove 130, the spacing hole 290 is seted up to the mount pad 200 outer lane, when mount pad 200 inserts inside the spread groove 110, gu fixed column 270 inserts inside the second spread groove 120, spacing cutting 280 inserts inside the spread groove 130, it follows mount pad 200 rotation direction, make mount pad 200 rotate and carry out connection 100.

The dead lever 300 is installed at the installation post 260 shaft, the dead lever 300 shaft is provided with slide bar 320, slide bar 320 runs through and stretches out the solid fixed ring 220 outer lane, doctor-bar 330 is installed to the slide bar 320 other end, slide bar 320 is close to dead lever 300 one end and has seted up spout 340, dead lever 300 stretches into spout 340 inside, dead lever 300 is a plurality of and evenly sets up at the installation post 260 outer lane, slide bar 320 is unanimous with dead lever 300 quantity, a plurality of first screw holes 310 have been seted up to the dead lever 300 shaft, slide bar 320 shaft has seted up second screw hole 350, second screw hole 350 is unanimous with first screw hole 310 quantity, the position cooperation, make spout 340 slide at the dead lever 300 shaft through pulling slide bar 320, adjust the part that slide bar 320 stretches out solid fixed ring 220, make the length that a plurality of slide bars 320 stretched out solid fixed ring 220 unanimous through adjusting a plurality of slide bars 320, thereby the bore when adjusting punching, also can conveniently control the length that slide bar 320 stretched out through contrasting second screw hole 350 and first screw hole 310.

The number of the threaded rods 400 is consistent with that of the fixed rods 300, the threaded rods 400 penetrate through the second threaded holes 350 and the first threaded holes 310 in a rotating mode, the rotary buttons 410 are installed at the side ends of the threaded rods 400, the threaded rods 400 are driven to rotate through the handheld rotary buttons 410, and the threaded rods 400 penetrate through the corresponding second threaded holes 350 and the corresponding first threaded holes 310 respectively to fix the sliding rods 320.

The slide plate 500 is located inside the limit sliding groove 140, the spring 510 is installed on the side wall of the slide plate 500, the other end of the spring 510 is connected with the side wall of the limit sliding groove 140, the limit plate 520 is installed on the other side wall of the slide plate 500, the limit plate 520 penetrates through the limit sliding groove 140 and stretches into the limit hole 290, when the installation seat 200 is required to be connected, the slide plate 500 is pulled to enable the slide plate 500 to slide inside the limit sliding groove 140 and extrude the spring 510, the limit plate 520 moves along with the slide plate 500 to be retracted into the limit sliding groove 140, at the moment, the installation seat 200 is inserted into the connecting groove 110, the slide plate 500 is loosened, the spring 510 rebounds to push the limit plate 520 to penetrate through the limit sliding groove 140 and be inserted into the limit hole 290, the installation seat 200 is fixed at the bottom of the connecting seat 100, and installation and disassembly of the installation seat 200 are convenient.

Referring to fig. 1-4, in the drill bit for forming a hole on a reverse circulation drilling machine for a bored pile according to this embodiment, during use, the mounting seat 200 is inserted into the connecting slot 110, the spring 510 pushes the limiting plate 520 to be inserted into the limiting hole 290, the mounting seat 200 is fixed in the connecting slot 110, the sliding rod 320 is pulled to adjust the length of the portion of the sliding rod 320 extending out of the fixing ring 220, so that the second threaded hole 350 is communicated with the corresponding first threaded hole 310, at this moment, the rotating knob 410 rotates the threaded rod 400 to penetrate through the communicated second threaded hole 350 and the first threaded hole 310, the extending length of the sliding rod 320 is fixed, the hole diameter required during punching is adjusted, the drill bits with different hole diameters do not need to be replaced frequently, and the construction efficiency is improved.

Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A drill bit for reverse circulation drilling of cast-in-situ bored piles, comprising:

the connecting seat (100), the bottom of the connecting seat (100) is provided with a connecting groove (110);

the installation seat (200), the installation seat (200) is located inside the connecting groove (110), a supporting rod (210) is installed at the bottom of the installation seat (200), a fixed ring (220) is installed at the bottom of the supporting rod (210), a connecting rod (230) is installed at the bottom of the fixed ring (220), a twist drill (240) is installed at the bottom of the connecting rod (230), a supporting column (250) is installed at the center of the bottom of the installation seat (200), the bottom end of the supporting column (250) is connected with the top end of the twist drill (240), and a mounting column (260) is installed on a rod body of the supporting column (250);

the utility model provides a dead lever (300), dead lever (300) are installed erection column (260) shaft, dead lever (300) shaft is provided with slide bar (320), slide bar (320) run through and stretch out solid fixed ring (220) outer lane, doctor-bar (330) are installed to slide bar (320) other end, slide bar (320) are close to dead lever (300) one end has seted up spout (340), dead lever (300) stretch into inside spout (340).

2. The drill bit for forming holes of reverse circulation drilling machine for bored piles according to claim 1, wherein the number of the fixing rods (300) is a plurality and the fixing rods (300) are uniformly arranged on the outer ring of the mounting column (260), the number of the sliding rods (320) is consistent with that of the fixing rods (300), a plurality of first threaded holes (310) are formed in the rod body of the fixing rods (300), second threaded holes (350) are formed in the rod body of the sliding rods (320), and the second threaded holes (350) are consistent with the first threaded holes (310) in number and are matched in position.

3. The drill bit for forming holes of reverse circulation drilling machine for bored piles according to claim 2, further comprising threaded rods (400), wherein the number of the threaded rods (400) is identical to the number of the fixing rods (300), the threaded rods (400) are rotated to penetrate through the second threaded holes (350) and the first threaded holes (310), and a rotary knob (410) is installed at the side end of the threaded rods (400).

4. A drill bit for hole forming of a reverse circulation drilling machine for cast-in-situ bored piles according to claim 3, wherein the second connecting groove (120) is formed in the top of the connecting groove (110), the limit groove (130) is formed in the side wall of the second connecting groove (120), and the limit sliding groove (140) is formed in the bottom of the connecting seat (100).

5. The drill bit for hole forming of reverse circulation drilling machine for bored piles according to claim 4, wherein a fixing column (270) is installed at the top of the installation base (200), the fixing column (270) stretches into the second connecting groove (120), a limit insert (280) is installed on the column body of the fixing column (270), the limit insert (280) stretches into the limit groove (130), and a limit hole (290) is formed in the outer ring of the installation base (200).

6. The drill bit for reverse circulation drilling machine hole forming of bored pile according to claim 5, further comprising a sliding plate (500), wherein the sliding plate (500) is located inside the limit chute (140), a spring (510) is installed on the side wall of the sliding plate (500), the other end of the spring (510) is connected with the side wall of the limit chute (140), a limit plate (520) is installed on the other side wall of the sliding plate (500), and the limit plate (520) penetrates through and extends out of the limit chute (140) and into the limit hole (290).