CN213898914U - Drill bit for rotary drilling of viscous soil layer - Google Patents

Abstract

The utility model relates to a dig bored concrete pile soon and creep into the pore-forming field, indicate a drilling bit is dug soon to viscidity soil horizon especially. The device comprises a drill barrel and a cutting device, wherein the cutting device is arranged in the drill barrel, and the device further comprises a jacking device, and the jacking device comprises a power head pressure plate, a jacking rod spring, a jacking rod limiting sleeve and a jacking steel plate. The utility model discloses the viscous soil layer rotary digging drilling bit extrudes the soil body in the drill barrel in the soil unloading process by adding the jacking device in the drill barrel, so that the soil dumping effect of the drilling machine can be greatly improved; the soil unloading can be completed without swinging the drill bit, and no noise pollution is caused; the method is particularly suitable for drilling and soil unloading construction of easily stuck and drilled stratums such as cohesive soil and the like, and the hole forming effect is accelerated.

Description

Drill bit for rotary drilling of viscous soil layer

Technical Field

The utility model relates to a dig bored concrete pile soon and creep into the pore-forming field, indicate a drilling bit is dug soon to viscidity soil horizon especially.

Background

The rotary drilling rig, also called a pile driver, is a comprehensive drilling rig, has wide stratum application range, and has the characteristics of high hole forming speed, less pollution, strong maneuverability and the like. Short auger bits perform dry excavation operations, and rotary drill bits may also be used to perform wet excavation operations with mud dado. The rotary excavator can be matched with a hammer to drill and dig holes in hard stratum. If the reamer is matched with a reaming head drilling tool, reaming operation can be carried out at the bottom of the hole. The rotary excavating machine adopts a plurality of layers of telescopic drill rods, has less drilling auxiliary time and low labor intensity, does not need slurry to discharge slag circularly, saves cost and is particularly suitable for the basic construction of urban construction.

Traditional rotary drilling machine adopts single-door or two-door bailing drill bit to creep into the construction when the cohesive soil layer creeps into, because the cohesive soil has extremely strong adsorptivity, the drilling tool drills the interior soil body of section of thick bamboo and makes it form wholly in drilling a section of thick bamboo lateral wall through crowding closely at the in-process, often drills the interior soil body of section of thick bamboo and is difficult to throw away at the soil unloading process, leads to the efficiency of construction to reduce. And the drill rod needs to drive the drill bit to rotate forward and backward for many times in the soil unloading process, so that the swinging sound is large, and the noise pollution is caused.

Disclosure of Invention

In order to solve the problem, the utility model provides a drilling bit is dug soon to viscidity soil horizon unloads native operation simple and convenient more, improves the efficiency of construction, noise abatement pollution.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a drilling bit is dug soon to viscidity stratum, includes a brill section of thick bamboo and cutting device, cutting device sets up in boring a section of thick bamboo, still includes the roof pressure device, the roof pressure device includes the unit head pressure disk, presses the ejector pin, presses ejector pin spring, presses ejector pin limit sleeve and roof pressure steel sheet, it is fixed with boring a section of thick bamboo to press the ejector pin limit sleeve, press the ejector pin to run through ejector pin limit sleeve to press the ejector pin upper end to be connected with the unit head pressure disk, the lower extreme is connected with the roof pressure steel sheet, press the ejector pin and press the mobile setting between the ejector pin limit sleeve, press the ejector pin spring and be connected with pressing ejector pin limit sleeve upper end to cup joint in the ejector pin surface, the roof pressure steel sheet sets up in boring a section of thick bamboo, bore a section of thick bamboo bottom for digging mouthful soon.

Further, cutting device includes drilling rod, cross cutting crossbeam and drill bit pick, the drilling rod lower extreme is connected with the drill section of thick bamboo upper end, the cross cutting crossbeam is fixed with drill section of thick bamboo bottom, the drill bit pick is fixed with drill section of thick bamboo bottom to the slope sets up, the mobile cup joint on the drilling rod of unit head pressure disk, still be connected with spacing section of thick bamboo between the ejector pin spacing sleeve, the drilling rod runs through spacing section of thick bamboo, still be connected with the stand pipe between drill section of thick bamboo top and the cross cutting crossbeam, roof pressure steel sheet movably cup joints on the stand pipe.

The cross cutting beam is welded and fixed with the periphery of the bottom of the drill barrel, and the cutting teeth of the drill bit are welded and fixed with the periphery of the bottom of the drill barrel or the cross cutting beam.

Wherein, the surface of the drilling barrel is also provided with a slurry overflow port which is convenient for the slurry in the drilling barrel to flow out.

Further, the slurry overflow port is positioned at the upper middle position of the surface of the drill cylinder, and at least two slurry overflow ports are arranged.

Furthermore, the pressing ejector rod limiting sleeves are respectively arranged on two sides of the upper end of the drill barrel, and the pressing ejector rod is respectively fixed with the power head pressure plate and two sides of the jacking steel plate.

Further, the height of the drill barrel is larger than the diameter of the drill barrel.

The upper end of the pressing ejector rod is fixed with the power head pressure plate through a nut.

The beneficial effects of the utility model reside in that: the utility model discloses the viscous soil layer rotary digging drilling bit extrudes the soil body in the drill barrel in the soil unloading process by adding the jacking device in the drill barrel, so that the soil dumping effect of the drilling machine can be greatly improved; the soil unloading can be completed without swinging the drill bit, and no noise pollution is caused; the method is particularly suitable for drilling and soil unloading construction of easily stuck and drilled stratums such as cohesive soil and the like, and the hole forming effect is accelerated.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

The reference numbers illustrate: 1. drilling a barrel; 11. a slurry overflow port; 2. a cutting device; 21. a drill stem; 22. a cross cutting beam; 23. a drill bit pick; 24. a limiting cylinder; 3. a jacking device; 31. a power head pressure plate; 32. pressing the ejector rod; 33. a knock rod spring; 34. pressing a top rod limiting sleeve; 35. pressing the steel plate; 36. a guide tube; 37. and (4) a nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

Please refer to fig. 1, the utility model discloses a drill bit is dug soon to viscidity stratum, including boring a section of thick bamboo 1 and cutting device 2, cutting device 2 sets up in boring a section of thick bamboo 1, still includes roof pressure device 3, roof pressure device 3 includes unit head pressure disk 31, ejector pin 32, ejector pin spring 33, ejector pin stop collar 34 and roof pressure steel sheet 35, ejector pin stop collar 34 is fixed with boring a section of thick bamboo 1, ejector pin 32 runs through ejector pin stop collar 34 to ejector pin 32 upper end is connected with unit head pressure disk 31, and the lower extreme is connected with roof pressure steel sheet 35, but mobile setting between ejector pin 32 and the ejector pin stop collar 34, ejector pin spring 33 is connected with ejector pin stop collar 34 upper end to cup joint on ejector pin 32 surface, roof pressure steel sheet 35 sets up in boring a section of thick bamboo 1, bore a section of thick bamboo 1 bottom for digging mouthful soon.

Wherein, cutting device 2 includes drilling rod 21, cross cutting crossbeam 22 and drill bit pick 23, drilling rod 21 lower extreme is connected with a 1 upper end of boring section of thick bamboo, cross cutting crossbeam 22 is fixed with a 1 bottom of boring section of thick bamboo, drill bit pick 22 is fixed with a 1 bottom of boring section of thick bamboo to the slope sets up, the mobile cup joint of unit head pressure disk 31 is on drilling rod 21, still be connected with spacing section of thick bamboo 24 between the spacing sleeve 34 of ejector pin, drilling rod 21 runs through spacing section of thick bamboo 24, still be connected with stand pipe 36 between a 1 top of boring section of thick bamboo and the cross cutting crossbeam 22, roof pressure steel sheet 35 movably cup joints on stand pipe 36.

In the embodiment, the cross cutting beam 22 is welded and fixed with the periphery of the bottom of the drill barrel 1, and the drill bit 23 is welded and fixed with the periphery of the bottom of the drill barrel 1 or the cross cutting beam 22. The surface of the drilling barrel 1 is further provided with a slurry overflow port 11 for facilitating the outflow of slurry in the drilling barrel 1, the slurry overflow port 11 is positioned at the upper middle position of the surface of the drilling barrel 1, and at least two slurry overflow ports 11 are arranged. In addition, the ejector rod limiting sleeves 34 are respectively arranged on two sides of the upper end of the drill barrel 1, and the ejector rod 32 is respectively fixed with two sides of the power head pressure plate 31 and the ejector steel plate 35. The height of the drill barrel 1 is larger than the diameter of the drill barrel 1, and the upper end of the pressing ejector rod 32 is fixed with the power head pressure plate 31 through a screw cap 37.

In the drilling process of the drill bit, the inclined soil is cut through the periphery of the bottom of the drill barrel 1 and the drill bit cutting teeth 23 welded on the cross inclined cutting beam 22, and the whole drill bit is pressurized and drilled through the drill rod 21 of the rotary drilling machine, so that the soil in the hole is cut into the drill barrel 1. And a steel pipe is longitudinally welded on the cross cutting cross 22, is welded and reinforced with the top of the drill barrel 1 and is used as a guide pipe 26 for jacking a steel plate 25. The jacking steel plate 35 is lifted by the extrusion of the soil body in the drilling process, and the jacking rod 32 connected with the jacking steel plate 35 is driven to move in the jacking rod limiting sleeve 34 in the lifting process of the jacking steel plate 35, so that the inclination eccentricity of the jacking steel plate 35 caused by unbalanced stress is limited.

In addition, in the drilling process, mud in the drilling barrel 1 can flow out through the mud overflow port 11, and the situation that the mud in the drilling barrel 1 cannot be used for taking earth due to overlarge pressure is avoided. After the drill barrel 1 is filled with soil, the drill rod 21 is lifted to the outside of the drill hole for soil unloading, and when the soil is unloaded, the power head pressure plate 31 of the rotary excavating machine downwards pushes the pressing ejector rod 32, the screw cap 37 drives the pressing ejector rod 32 and the pressing steel plate 35 to downwards extrude the soil, so that the soil in the drill barrel 1 is extruded. When the nut 37 downwardly extrudes the jack rod spring 33 to a certain degree and the soil in the drill barrel 1 is completely discharged, the power head pressure plate 31 of the rotary drilling machine is lifted, and the dynamic pressure jack rod 32 and the jacking steel plate 35 are driven to be lifted upwards under the resilience action of the jack rod spring 33, so that the soil discharging process is completed, and the process is more convenient and simpler.

It is further understood that the terms "connected," "secured," "disposed," and the like are used broadly and their meanings in the present application will be understood by those skilled in the art based on the specific situation, unless otherwise explicitly specified or limited.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims (8)

1. The utility model provides a drilling bit is dug soon on viscidity stratum, includes and bores a section of thick bamboo and cutting device, cutting device sets up in boring a section of thick bamboo, its characterized in that: still include the roof pressure device, the roof pressure device includes the unit head pressure disk, presses the ejector pin spring, presses ejector pin limit sleeve and roof pressure steel sheet, it is fixed with a brill section of thick bamboo to press the ejector pin limit sleeve, press the ejector pin to run through and press ejector pin limit sleeve to press the ejector pin upper end to be connected with the unit head pressure disk, the lower extreme is connected with the roof pressure steel sheet, press the ejector pin and press mobile setting between the ejector pin limit sleeve, press the ejector pin spring to be connected with top pin limit sleeve upper end to cup joint and pressing the ejector pin surface, the roof pressure steel sheet sets up in a brill section of thick bamboo, a brill section of thick bamboo bottom is for digging mouthful soon.

2. The drill bit for rotary drilling of the viscous soil layer according to claim 1, which is characterized in that: the cutting device comprises a drill rod, a cross cutting cross beam and a drill bit cutting tooth, the lower end of the drill rod is connected with the upper end of a drill barrel, the cross cutting cross beam is fixed to the bottom of the drill barrel, the drill bit cutting tooth is obliquely arranged, a power head pressure plate is movably sleeved on the drill rod, a limiting barrel is further connected between limiting sleeves of a jacking rod, the drill rod penetrates through the limiting barrel, a guide pipe is further connected between the top of the drill barrel and the cross cutting cross beam, and a jacking steel plate is movably sleeved on the guide pipe.

3. The drill bit for rotary drilling of the viscous soil layer according to claim 2, which is characterized in that: the cross cutting beam is welded and fixed with the periphery of the bottom of the drill barrel, and the cutting teeth of the drill bit are welded and fixed with the periphery of the bottom of the drill barrel or the cross cutting beam.

4. The rotary excavating and drilling bit for the viscous soil layer according to claim 1 or 2, which is characterized in that: and the surface of the drilling barrel is also provided with a slurry overflow port for facilitating the outflow of slurry in the drilling barrel.

5. The drill bit for rotary drilling of the viscous soil layer according to claim 4, which is characterized in that: the slurry overflow port is positioned at the upper middle position on the surface of the drilling barrel and is at least provided with two slurry overflow ports.

6. The drill bit for rotary drilling of the viscous soil layer according to claim 1, which is characterized in that: the top pressing rod limiting sleeves are respectively arranged on two sides of the upper end of the drill barrel, and the top pressing rods are respectively fixed with the power head pressure plate and two sides of the top pressing steel plate.

7. The drill bit for rotary drilling of the viscous soil layer according to claim 1, which is characterized in that: the height of the drill cylinder is larger than the diameter of the drill cylinder.

8. The drill bit for rotary drilling of the viscous soil layer according to claim 1, which is characterized in that: the upper end of the pressing ejector rod is fixed with the power head pressure plate through a nut.

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