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CN-121992789-A - High-pressure grouting reinforcement equipment for foundation pile

CN121992789ACN 121992789 ACN121992789 ACN 121992789ACN-121992789-A

Abstract

The invention discloses high-pressure grouting reinforcement equipment for foundation piles, and relates to the technical field of grouting reinforcement of bridge foundation piles; the drilling device comprises a bottom plate, a rotating pipe, a clamping piece, a transmission mechanism, a slurry discharging pipe, a slurry storage tank and a slurry storage tank, wherein the drilling device is based on the integrated structural design of a drill bit and the slurry discharging pipe, grouting operation can be carried out immediately after a drilling process is finished, a time-consuming link of equipment position adjustment and process connection is omitted, construction efficiency is effectively improved, when a karst cave top plate collapses and the bottom plate inclines along with the karst cave top plate, part of weights slide under the action of gravity and are separated from a limiting ring, limiting constraint on each eccentric shaft is further relieved, at the moment, the eccentric shafts are subjected to reverse acting force in the process of driving a gear ring to rotate and separate from a tooth space gap of the gear ring, and power transmission of the rotating pipe is interrupted.

Inventors

  • WANG JUN
  • Chu Wangpeng
  • WANG WEI

Assignees

  • 安徽杰特建筑工程有限公司

Dates

Publication Date
20260508
Application Date
20260319

Claims (10)

  1. 1. The high-pressure grouting reinforcement equipment for the foundation pile comprises a bottom plate (1), a rotating pipe (2), clamping pieces (3), a transmission mechanism (4), a slurry discharge pipe (5), a slurry storage tank (6) and a slurry storage tank (7), and is characterized in that the rotating pipe (2) is rotatably arranged, a gear ring (22) is fixedly arranged on the rotating pipe (2), male threads are arranged on the inner wall of the gear ring, a transmission ring is arranged at the lower end of the inner wall of the rotating pipe (2), a rectangular through hole is formed in the inner part of the transmission ring, two clamping pieces (3) are arranged in total, one clamping piece (3) can move up and down, and the other clamping piece (3) is fixed at a specific position; The slurry discharging pipe (5) is rectangular, the lower end of the slurry discharging pipe (5) is provided with a plurality of openings I, the lower end part of the slurry discharging pipe is connected with a drill bit (51), the upper end and the lower end of the slurry discharging pipe (5) are respectively provided with a lower cover (52) and an upper cover (53), the lower covers (52) are communicated with a slurry storage tank (6) through return pipes (62), the slurry storage tank (6) and the slurry storage tank (7) convey slurry and slurry into the slurry discharging pipe (5) through the upper covers (53), the lower end of the slurry discharging pipe (50) is communicated with a branch pipe (501), when slurry is not injected into a hole, the branch pipe (501) is in a blocking state, the lower end of the inner part of the slurry discharging pipe (5) is provided with a rectangular pipe (55), the rectangular pipe wall (55) is provided with a slurry outlet (551) corresponding to the upper opening I of the slurry discharging pipe (5), the rectangular pipe (55) is supported by a spring I (552), and the opening I of the slurry discharging pipe (5) is blocked by the rectangular pipe (55); the transmission mechanism (4) provides rotary power for the rotary pipe (2), and when the bottom plate (1) is inclined, the transmission mechanism (4) does not provide rotary power for the rotary pipe (2) any more.
  2. 2. The high-pressure grouting reinforcement equipment for foundation piles according to claim 1, wherein the bottom plate (1) is slidably assembled on a truck breast board type container, and when the karst cave roof is required to rotate, part of the bottom plate (1) is pulled out, so that the drill bit (51) corresponds to the karst cave roof.
  3. 3. The high-pressure grouting reinforcement device for foundation piles according to claim 1, wherein one of the clamping members (3) is fixed to a tubular mounting plate (23), female threads of the mounting plate (23) are engaged with male threads, the other clamping member (3) is fixed to a fitting ring (24), the fitting ring (24) is rotatably connected to the rotary pipe (2), and a positioning column (30) penetrates the mounting plate (23).
  4. 4. A high-pressure grouting reinforcement device for foundation piles is characterized in that the component members of the clamping piece (3) comprise an annular plate (31), air cylinders (32), abutting clamps (33), rotating plates (34) and clamping jaws (35), the air cylinders (32) are oppositely arranged at two ends of the top surface of the annular plate (31), one abutting clamp (33) is arranged on each telescopic shaft of the two air cylinders (32), the two abutting clamps (33) are oppositely attached to form an annular structure, the rotating plates (34) are rotatably assembled on the inner ring of the annular plate (31), the top surfaces of the clamping plates are provided with two oppositely distributed clamping jaws (35) in a sliding mode, elastic pieces are arranged at sliding connection positions, the two clamping jaws (35) are oppositely attached to each other, and the inner ring of the clamping jaws is of a rectangular structure.
  5. 5. The high-pressure grouting reinforcement device for foundation piles of claim 4, wherein the annular plate (31) and the bottom surface of the rotary plate (34) are respectively provided with two arc magnets I (36) and II (37) which are distributed oppositely, and the magnets I (36) are arranged opposite to the S pole and the N pole of the magnets II (37).
  6. 6. The high-pressure grouting reinforcement equipment for foundation piles of claim 1, wherein the grouting pipes (5) are formed by splicing a plurality of sections of flower steel pipes through bolts, and the connection parts of the adjacent flower steel pipes are fastened through symmetrically arranged screws.
  7. 7. The high-pressure grouting reinforcement device for foundation piles according to claim 1, wherein the slurry storage tank (6) penetrates through the upper cover (53) through the first communicating pipe (61) and is rotatably connected with the slurry pipe (50), and the slurry storage tank (7) penetrates through the upper cover (53) through the second communicating pipe (71) and extends into the slurry discharge pipe (5).
  8. 8. The high-pressure grouting reinforcement equipment for foundation piles, as set forth in claim 1, is characterized in that openings two corresponding to nozzles of each branch pipe (501) are formed in the lower end of the grouting pipe (5), a baffle plate (54) is rotatably assembled in the lower end of the grouting pipe (5), a torsion spring one (552) is arranged at the rotary connection position of the baffle plate (54) and the grouting pipe (5), a plurality of discharge openings (541) are formed in the baffle plate (54) along the axis of the baffle plate, when the grouting pipe (5) rotates at a high speed, the baffle plate (54) rotates under the action of centrifugal force and is restrained by a limited-position structure after rotating to a preset angle, and the discharge openings (541) are aligned with the openings two in the lower end of the grouting pipe (5).
  9. 9. The high-pressure grouting reinforcement device for foundation piles according to claim 1, wherein the transmission mechanism (4) comprises a lower shell (41), an upper shell (42), a limiting block (43), an eccentric shaft (44), a sliding rail (45), a weight (46), a limiting ring (47) and a second spring (48), wherein the axes of the lower shell (41) and the upper shell (42) are in a through structure and are rotationally connected, the servo motor drives the lower shell (41) to rotate through a chain sprocket mechanism, the upper shell (42) is fixed on a bottom plate (1), the eccentric shafts (44) are arranged in a plurality of ways, the axes of the eccentric shafts are equidistantly distributed along the axis of the inner ring of the lower shell (41), one ends of the eccentric shafts are rotationally connected with the lower shell (41), torsion springs (48) are arranged at the rotating connection positions, the other ends of the eccentric shafts are inserted into a gear ring (22), tooth ends of the gear ring (22) are provided with round corners, the inter-tooth space distance is larger than the diameter of the eccentric shafts (44), one ends of the upper connecting spring rods (441) of the eccentric shafts (44) extend into the inner parts of the lower shell (41), the eccentric shafts (43) are consistent in number with the eccentric shafts (44), the eccentric shafts are assembled with the sloping surfaces (44), one ends of the eccentric shafts are all slidingly arranged in the lower shell (41) and face the upper shell (41) and are fixedly arranged at one end (41), the spring device comprises a spring rod (441), a spring rod (431), limiting rings (47), a plurality of sliding rails (45), a plurality of weight blocks (46) and sliding blocks (451), wherein the spring rod (431) corresponds to the spring rod (441), the edges of the limiting rings (47) extend downwards and can push down all limiting blocks (43), the edges of the top surfaces of the limiting rings (47) are raised upwards, two ends of each spring II (48) are respectively connected with an upper shell (42) and the limiting rings (47), the sliding rails (45) are arranged in the upper shell (42) and are distributed at equal intervals along the axis of the upper shell (42), a spring III is arranged between the sliding rails (45) and the sliding blocks (451), and the weight blocks (46) and the sliding blocks (451) form up-down sliding connection.
  10. 10. The high-pressure grouting reinforcement device for foundation piles of claim 9, wherein the number of the sliding rails (45) is eight, and the sliding rails correspond to eight directions of east, south, west, north, southeast, northeast, southwest and northwest respectively.

Description

High-pressure grouting reinforcement equipment for foundation pile Technical Field The invention relates to the technical field of grouting reinforcement of bridge foundation piles, in particular to high-pressure grouting reinforcement equipment for foundation piles. Background In the field of bridge engineering construction, foundation piles are core bearing members for supporting bridge superstructure, and underground karst cave can cause obvious harm to bridge foundation piles in karst areas. If the karst cave roof is insufficient in thickness or low in strength, breakdown and collapse are very easy to occur in the foundation pile construction or operation stage, the foundation pile bearing capacity is directly reduced, and the safety of the bridge structure is endangered. The prior grouting reinforcement process for the karst cave needs to drill a roof of the karst cave, so that the grouting hole penetrates through the roof to extend into the karst cave, and then a grouting pipe is inserted for grouting operation, thereby realizing the purposes of filling the cavity of the karst cave and improving the strength of the roof. However, the technology has the technical defects that: 1. The construction flow is complicated, the drill bit is required to be lifted firstly after the drilling is completed, the equipment position is adjusted, then the grouting pipe is lowered, the procedure connection time is long, and the construction efficiency is affected. 2. Therefore, the grouting reinforcement equipment needs to be subjected to real-time levelness detection, when the equipment inclines, the drilling motor needs to be started and stopped, and in the process of slowing down and stopping the motor, the relative movement of the drill bit and soil generates reactive torque, and the reverse load not only can enable the motor to be converted into a regenerative braking state from an electric state, causes the bus voltage to rise and impacts driving circuits such as a frequency converter and a driver, but also can directly damage a motor rotor and an output shaft, thereby reducing the service life of the equipment. For this purpose, we have devised a high-pressure grouting reinforcement device for foundation piles to solve the above-mentioned problems. Disclosure of Invention Aiming at the situation, in order to overcome the defects of the prior art, the invention provides high-pressure grouting reinforcement equipment for foundation piles, which comprises the steps of firstly adopting the integrated structural design of a drill bit and a grouting pipeline, directly carrying out grouting operation after the punching operation is finished, saving the time-consuming link of equipment position adjustment and process connection, and improving the construction efficiency, and secondly, actively cutting off the power transmission to the drill bit through a transmission mechanism when the equipment is inclined, so as to avoid the damage risk of a motor caused by torque mutation. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The high-pressure grouting reinforcement equipment for the foundation pile comprises a bottom plate, a rotating pipe, clamping pieces, a transmission mechanism, a slurry discharging pipe, a slurry storage tank and a slurry storage tank, wherein the rotating pipe is rotationally arranged, a gear ring is fixedly arranged on the rotating pipe, a male thread is arranged on the inner wall of the rotating pipe, a transmission ring is arranged at the lower end of the inner wall of the rotating pipe, a rectangular through hole is formed in the inner part of the transmission ring, two clamping pieces are arranged in total, one clamping piece can move up and down, and the other clamping piece is fixed at a specific position; The slurry discharging pipe is rectangular, the lower end of the slurry discharging pipe is provided with a plurality of openings I, the lower end part of the slurry discharging pipe is connected with a drill bit, the upper end and the lower end of the slurry discharging pipe are respectively provided with a lower cover and an upper cover, the lower covers are communicated with a slurry storage tank through return pipes, the slurry storage tank and the slurry storage tank are used for conveying slurry and slurry into the slurry discharging pipe and the slurry pipe through the upper covers, the lower ends of the slurry pipe are communicated with branch pipes, and when the slurry is not injected into holes, the branch pipes are in a blocking state; The transmission mechanism provides rotary power for the rotary pipe, and when the bottom plate is inclined, the transmission mechanism does not provide rotary power for the rotary pipe. In one embodiment, the bottom plate is slidably mounted on the truck breast board type container, and when the karst cave top plate is required to rotate, a part of the bottom plate is pulled out, so that the dril