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CN-224228612-U - Grouting device capable of synchronously reaming and stirring

CN224228612UCN 224228612 UCN224228612 UCN 224228612UCN-224228612-U

Abstract

The utility model discloses a grouting device capable of synchronously reaming and stirring, which comprises a hollow drill rod and a main driving device for driving the drill rod to rotate forwards and backwards, wherein a grouting pipeline is arranged in the drill rod, the grouting pipeline is connected with a slurry supply device, a conical drill bit is arranged at the lower end of the drill rod, a plurality of first grouting holes which are radially arranged and are communicated with the grouting pipeline are formed in the side wall of the drill bit, and a stirring assembly positioned above the drill bit is arranged at the lower part of the drill rod. The utility model has the advantages of high integration level, remarkably improved operation efficiency, good stirring uniformity and strong adaptability.

Inventors

  • SUN TAO
  • He Juntu
  • WANG LEICHONG
  • Deng gan

Assignees

  • 精砼新材料技术(广东)有限公司
  • 中山艾尚智同信息科技有限公司

Dates

Publication Date
20260512
Application Date
20250528

Claims (9)

  1. 1. The grouting device capable of synchronously reaming and stirring is characterized by comprising a hollow drill rod (1) and a main driving device (2) for driving the drill rod to positively and negatively rotate, wherein a grouting pipeline (11) is arranged in the drill rod (1), the grouting pipeline (11) is connected with a slurry supply device, a conical drill bit (3) is arranged at the lower end of the drill rod (1), a plurality of first grouting holes (31) which are radially arranged and are communicated with the grouting pipeline (11) are formed in the side wall of the drill bit (3), and a stirring assembly (4) positioned above the drill bit (3) is arranged at the lower part of the drill rod (1); The stirring assembly (4) comprises a sleeve (41) sleeved on the drill rod (1) and a plurality of stirring blades (42) movably connected to the sleeve (41), a bidirectional overrunning clutch is arranged between the sleeve (41) and the drill rod (1), the upper end of the stirring blade (42) is rotationally connected to the sleeve (41), the stirring blade (42) is suitable for swinging up and down relative to the sleeve (41) to realize switching of the unfolding and folding states of the stirring blade (42), and a stirring driving device for driving the stirring blade (42) to unfold and fold is arranged between the stirring blade (42) and the sleeve (41).
  2. 2. The grouting device capable of synchronously reaming and stirring according to claim 1, wherein the stirring driving device comprises a linear driver (43) and a sliding block (44) which is connected to the sleeve (41) in a sliding manner, at least one connecting rod (45) is rotatably connected to the sliding block (44), the other end of the connecting rod (45) is rotatably connected to the stirring blade (42), one end of the linear driver (43) is rotatably connected to the sleeve (41), the other end of the linear driver (43) is rotatably connected to the connecting rod (45), and a locking mechanism for limiting the sliding of the sliding block (44) is arranged between the sliding block (44) and the sleeve (41).
  3. 3. The grouting device capable of synchronously reaming and stirring according to claim 2, wherein the locking mechanism comprises a locking piece (46) arranged on the sleeve (41), a locking groove (461) arranged on the locking piece (46), and a lock tongue (47) which is connected on the sliding block (44) in a sliding way and can be inserted into the locking groove (461), wherein a locking driver (48) for driving the lock tongue (47) to extend to the locking groove (461) and an elastic reset piece (49) for elastically pressing the lock tongue (47) in a direction deviating from the locking groove (461) are arranged between the lock tongue (47) and the sliding block (44).
  4. 4. The grouting device capable of synchronously reaming and stirring according to claim 3, further comprising a controller, wherein a depth positioning sensor, a drill rod torque sensor, a blade extension angle sensor and a grouting pressure sensor are arranged at the lower part of the drill rod (1), and the main driving device (2), the slurry feeding device, the linear driver (43), the locking driver (48), the depth positioning sensor, the drill rod torque sensor, the blade extension angle sensor and the grouting pressure sensor are electrically connected with and controlled by the controller.
  5. 5. The grouting device capable of synchronously reaming and stirring according to claim 1, wherein the edge of the stirring blade (42) is provided with a plurality of sawtooth-shaped protrusions (421).
  6. 6. The grouting device capable of synchronously reaming and stirring according to claim 1, wherein the stirring blades (42) are divided into at least two layers along the axial direction of the sleeve (41), and the stirring blades (42) of each layer are staggered in the circumferential direction of the sleeve (41).
  7. 7. The grouting device capable of synchronously reaming and stirring according to claim 1, wherein a plurality of second grouting holes (12) are formed in the side wall of the drill rod (1) at the position of the stirring assembly (4), and the second grouting holes (12) are communicated with the grouting pipeline (11) and are used for assisting grouting in the stirring process.
  8. 8. The grouting device capable of synchronously reaming and stirring according to claim 1, wherein a plurality of spiral cutting edges (32) are arranged on the side wall of the drill bit (3).
  9. 9. The grouting device capable of synchronously reaming and stirring according to claim 1, wherein the side wall of the drill bit (3) is provided with an annular sinking groove (33), and the first grouting hole (31) is arranged in the sinking groove (33).

Description

Grouting device capable of synchronously reaming and stirring Technical Field The utility model relates to the technical field of geotechnical engineering and foundation treatment, in particular to a grouting device capable of synchronously reaming and stirring. Background In modern infrastructure construction, conventional grouting processes and equipment often face many challenges in practical applications, especially when the holes need to be expanded to increase the slurry influence range and simultaneously fully stirred with the in-situ soil mass to form a uniform and high-strength consolidated body, the following disadvantages often exist in the prior art: 1. The problem of cooperative working efficiency and working procedure is that the traditional reaming and stirring operation usually adopts a drilling tool and a stirring mechanism which are designed separately, or needs to be carried out step by step. For example, drilling and reaming are performed by using a drilling machine, then the drilling tool is withdrawn, and then a special stirring device is put into the drilling tool for stirring, or primary grouting is performed in the drilling process, and then supplementary stirring or secondary grouting is performed. The step-by-step operation mode not only causes complicated construction procedures, increases auxiliary operation time and prolongs the total construction period, but also can cause the problems of hole wall instability, slurry loss and the like in a procedure conversion gap, and has low overall construction efficiency. 2. The mixing uniformity and adaptability are that the mixing uniformity degree of the slurry and the soil body directly determines the quality and the reinforcing effect of the solidified body. Some of the existing stirring devices have simple stirring blade structural designs, and the unfolding and folding mechanisms of the stirring blade structural designs may be not stable and reliable enough or lack effective dynamic regulation and control capability. When encountering different stratum conditions, such as soil layers with uneven hardness and soil layers mixed with a small amount of boulders or hard blocks, the fixed stirring parameters or structures may not realize ideal stirring effect, which easily causes insufficient mixing of slurry and soil bodies, and the phenomenon of 'wrapping' or stirring blind areas, and finally affects the uniformity and the overall strength of the reinforcing body. 3. The equipment reliability and maintenance problems are that the grouting operation environment is generally bad, and the equipment works in abrasive media such as slurry, sand and the like for a long time. Some key parts of traditional device, such as rotary seal spare, stirring leaf's swing joint position etc. if sealing performance is not enough or wearability is relatively poor, very easily take place jamming, quick wearing and tearing even damage because of the invasion of mud, grit, not only reduced the life of equipment, increased maintenance cost and down time, still probably arouse the trouble in the work progress. 4. The intelligent and integrated degree is insufficient, and along with the development of engineering technology, the requirements on grouting quality and process control are higher and higher. However, many existing devices have low intelligent degree and lack the capability of real-time monitoring and intelligent regulation of key parameters such as reaming diameter, stirring torque, grouting pressure, slurry flow rate, drilling depth and the like. The operation mainly depends on experience, so that accurate coordination and optimal control among the working procedures are difficult to realize, and the operation parameters are difficult to dynamically adjust according to stratum feedback, so that the further improvement of the construction quality and the adaptability to complex geological conditions are limited. In summary, the grouting device in the prior art is either focused on the application under specific working conditions (such as grouting after a shield wall and cavity filling), or has obvious defects in the aspects of synchronous and efficient operation of reaming, stirring and grouting, and multiple requirements of improving the construction efficiency, ensuring the stirring uniformity, enhancing the stratum adaptability, improving the equipment reliability and improving the intelligent control level are difficult to meet simultaneously. Accordingly, there is a need for further improvements and refinements of the prior art to overcome these shortcomings, and the present utility model is based on this circumstance. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provide the grouting device capable of synchronously reaming and stirring, which has the advantages of high integration level, remarkable improvement of operation efficiency, good stirring uniformity and strong adaptability. The utili