CN-224200609-U - Rotary drilling tool with telescopic bucket bottom

CN224200609UCN 224200609 UCN224200609 UCN 224200609UCN-224200609-U

Abstract

The utility model discloses a rotary drilling tool with a telescopic bucket bottom, which comprises a telescopic bucket bottom drilling tool, wherein a cylinder is fixedly connected below the telescopic bucket bottom drilling tool, a vertical rod guide rod is connected in a cavity of the cylinder, an unlocking device is arranged on the inner wall of the cylinder, a vertical rod is embedded in the vertical rod guide rod, the bottom of the vertical rod is connected with a fixed bottom, the fixed bottom is rotationally connected with a rotary bottom below the fixed bottom, the bottom of the rotary bottom is provided with drilling teeth, the telescopic bucket bottom rotary drilling tool is connected with the drill rod through a pin shaft through the connecting side, the soil unloading space is increased, the soil unloading resistance is reduced, the soil unloading efficiency is high, key bars are arranged in the vertical rod and the guide rod, torque force transmission is realized, damage caused by overlarge bucket bottom stress is avoided, and the vertical rod and the guide rod adopt a modularized assembly mode, so that the rotary drilling tool is convenient to replace and maintain.

Inventors

XIANG ZHENSONG
ZHAI HAIFEI
You Bochun
SUN YIWEN
CHEN JIE

Assignees

江苏泰信机械股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250521

Claims (9)

1. The utility model provides a scalable bucket bottom digs drilling tool soon, its characterized in that, includes scalable bucket bottom drilling tool, scalable bucket bottom drilling tool includes the connectivity side, the below fixedly connected with barrel of connectivity side, the intracavity connection of barrel has the pole setting guide arm, and its inner wall is equipped with unlocking means, the embedded pole setting of pole setting guide arm, the bottom of pole setting is connected with fixed end, fixed end and the rotatory end swivelling joint of its below, rotatory end is rotatory around fixed end under the driving force effect of drilling rod, forms the earth inlet, the bottom of rotatory end is equipped with bores the tooth, scalable bucket bottom digs drilling tool soon through the connection side and the drilling rod through the round pin hub connection.
2. The rotary drilling tool according to claim 1, wherein the connecting part comprises a connecting Fang Daozheng ring welded to the side wall and a top plate welded to the end surface, and is welded to the cylinder through the top plate, and a reinforcing plate is disposed on the connecting part.
3. The rotary drilling tool with the telescopic bucket bottom according to claim 1, wherein the unlocking device comprises a spring guide rod, an upper limit ring and a lower limit ring are respectively arranged at two ends of the spring guide rod, a reset spring is sleeved at the middle part of the spring guide rod, and a hook for locking the cylinder body is arranged at the bottom of the spring guide rod.
4. The rotary drilling tool with the telescopic bucket bottom according to claim 1, wherein the upright rod guide rod comprises at least 2 upright rod guide rod key bars which are uniformly distributed at the lower end of the upright rod guide rod along the circumferential direction, the bottom of the vertical rod guide rod is provided with three limiting blocks, and the limiting blocks are connected with the vertical rod guide rod through fasteners.
5. The rotary drilling tool of claim 4, wherein the inner wall of the barrel is provided with a barrel guide ring which plays a guiding role with the connecting Fang Daozheng ring, so that smooth and free clamping stagnation when the vertical rod guide rod moves up and down is ensured, and a wedge-shaped notch is formed in the outer side wall of the barrel.
6. The rotary drilling tool of claim 4, wherein the vertical rods are uniformly distributed with at least 2 vertical rod key bars along the circumferential direction, three baffle rings are uniformly distributed and welded on the top circumferential direction, and the baffle rings are used for ensuring smooth assembly of the vertical rods and the vertical rod guide rods, so that up-and-down movement is realized without interference.
7. The rotary drilling tool with the telescopic bucket bottom according to claim 3, wherein the rotary bottom is provided with a pin shaft, the pin shaft is connected with the fixed bottom through the pin shaft, the end part of the pin shaft is fixed through a nut, and drilling teeth are arranged at the bottom of the rotary bottom, so that soil is cut during drilling operation.
8. The rotary drilling tool of claim 7, wherein the fixed bottom is provided with a barrel connecting seat connected with the barrel, the side wall of the fixed bottom is provided with a plurality of wedge-shaped blocks embedded with wedge-shaped notches on the barrel, torque transmission in the drilling process is realized, the outer side of the bottom of the fixed bottom is provided with a fixed bottom stop block for limiting rotation of the rotary bottom, and the upper surface of the fixed bottom stop block is provided with an unlocking limit for locking the hook.
9. The retractable bucket bottom rotary drilling tool of claim 6, wherein the pole setting guide bars and pole setting bars are mutually engaged to achieve torque transfer during drilling.

Description

Rotary drilling tool with telescopic bucket bottom Technical Field The utility model relates to a rotary drilling tool with a telescopic bucket bottom, in particular to the technical field of engineering construction of rotary drilling rigs. Background At present, the mechanized construction popularization rate in the engineering construction field is higher and higher, and the mechanized construction rate is increased along with the popularization rate. The rotary drilling rig is the most widely used in pile foundation construction. In the construction process of the rotary drilling rig, a double-bottom sand-bailing drilling tool is generally adopted for soil layer drilling operation, soil unloading difficulty often occurs when a clay layer is encountered, so that the problem of construction efficiency reduction is caused, although the operation efficiency can be effectively improved to a certain extent by adopting other drilling tools such as a spiral drilling tool, a body-opening drilling tool and the like, the problem of low construction efficiency can not be fundamentally solved, and the design of a drilling tool capable of efficiently unloading soil is needed to improve the operation efficiency. Disclosure of utility model The utility model provides a rotary drilling tool with a telescopic bucket bottom, which is used for overcoming the defect of low soil unloading efficiency of a rotary drilling machine in the prior art. In order to solve the technical problems, the utility model provides the following technical scheme: the utility model discloses a rotary drilling tool with a telescopic bucket bottom, which comprises a telescopic bucket bottom drilling tool, wherein a cylinder body is fixedly connected below the telescopic bucket bottom drilling tool, a vertical rod guide rod is connected in a cavity of the cylinder body, an unlocking device is arranged on the inner wall of the cylinder body, a vertical rod is embedded in the vertical rod guide rod, the bottom of the vertical rod is connected with a fixed bottom, the fixed bottom is rotationally connected with a rotary bottom below the fixed bottom, drilling teeth are arranged at the bottom of the rotary bottom, and the rotary drilling tool with the telescopic bucket bottom is connected with a drill rod through a pin shaft by the connecting side. Further, the connecting part comprises a connecting Fang Daozheng ring welded on the side wall of the connecting part and a top plate welded with the end face, and is welded with the cylinder body through the top plate, and a reinforcing plate for reinforcing is arranged on the connecting part. Further, unlocking means includes the spring guide arm, the both ends of spring guide arm are provided with spacing ring and lower spacing ring respectively, and its middle cover is equipped with reset spring, and the bottom is equipped with the couple. Furthermore, the pole setting guide rod comprises at least 2 pole setting guide rod key bars which are uniformly distributed at the lower end of the pole setting guide rod along the circumferential direction, three limiting blocks are arranged at the bottom of the pole setting guide rod, and the limiting blocks are connected with the pole setting guide rod through fasteners. Further, be equipped with the barrel on the inner wall of barrel and lead the normal ring, it all plays the guide effect with connecting Fang Daozheng ring, and smooth and easy no jamming when guaranteeing the pole setting guide arm to reciprocate, the wedge breach of seting up on the lateral wall of barrel. Furthermore, the pole setting is along the circumference equipartition not less than 2 pole setting keybars, and its top circumference equipartition welding has three baffle rings, and the baffle ring is used for guaranteeing pole setting and pole setting guide arm and assembles smoothly, realizes the activity from top to bottom, does not have the interference. Further, a barrel connecting seat connected with the barrel is arranged on the fixed bottom, a plurality of wedge-shaped blocks embedded in the wedge-shaped gaps on the barrel are arranged on the side wall of the barrel, torque transmission in the drilling process is realized, a fixed bottom stop block for limiting rotation of the rotary bottom is arranged on the outer side of the bottom, and unlocking limiting for locking the hook is arranged on the upper surface of the fixed bottom stop block. Furthermore, a pin shaft is arranged on the rotary bottom, the pin shaft is connected with the fixed bottom, the end part of the pin shaft is fixed through a nut, and drilling teeth are arranged at the bottom of the rotary bottom, so that soil is cut during drilling operation. Furthermore, the upright rod guide rod key bars are mutually matched with the upright rod key bars, so that torque is transmitted in the drilling process. The telescopic bucket bottom has the advantages that the soil unloading space is increased, the soil unloading resista