CN212958494U

CN212958494U - Core drilling machine for pile head breaking of cast-in-place pile

Info

Publication number: CN212958494U
Application number: CN202021948062.2U
Authority: CN
Inventors: 张党生
Original assignee: Chengdu Dajia Hydraulic Machinery Co ltd
Current assignee: Chengdu Dajia Hydraulic Machinery Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-13
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses a to the broken pile head of current bored concrete pile mainly rely on the problem that the manpower was accomplished, provide a get core rig that is used for broken pile head of bored concrete pile, relate to a get core rig. A coring drilling machine for a cast-in-place pile breaking head comprises a linear sliding table, a first motor, a second motor and a hollow drill bit; the linear sliding table comprises a support frame, a linear guide rail and a slider in sliding fit with the linear guide rail, the linear guide rail is installed on the support frame, the first motor is connected with the slider through a transmission mechanism to drive the slider to slide back and forth on the linear guide rail, the hollow drill bit is installed on the slider, and the second motor is connected with the hollow drill bit in a transmission mode to drive the hollow drill bit to rotate. The utility model discloses, practiced thrift the construction cost of broken pile head greatly.

Description

Core drilling machine for pile head breaking of cast-in-place pile

Technical Field

The utility model relates to a core drill rig, specificly relate to a core drill rig that is used for broken pile head of bored concrete pile.

Background

When the cast-in-place pile is poured, the height of the pile top of the cast-in-place pile is 0.5-1.0 m higher than the designed pile top elevation so as to ensure the strength of the pile head concrete, but the pile head part higher than the designed pile top elevation needs to be chiseled off in the subsequent process construction, and the chiseling off of the pile head concrete is called as 'broken pile head'. The existing pile head breaking method mainly comprises the steps of knocking off a pile head protective layer by a hammer to expose reinforcing steel bars, and then removing a pile core part by an air pick, wherein the whole process is mainly completed by manpower, time and labor are wasted, and the engineering construction cost is also increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the core drilling machine for breaking the pile head of the cast-in-place pile is provided for solving the problem that the existing broken pile head of the cast-in-place pile mainly depends on manpower to complete.

The utility model provides a technical scheme that its technical problem adopted is: a coring drilling machine for a cast-in-place pile breaking head comprises a linear sliding table, a first driving device, a second driving device and a hollow drill bit; the linear sliding table comprises a support frame, a linear guide rail and a sliding block in sliding fit with the linear guide rail, and the linear guide rail is arranged on the support frame;

the first driving device is connected with the sliding block through a transmission mechanism so as to drive the sliding block to slide back and forth on the linear guide rail, the hollow drill bit is installed on the sliding block, and the second driving device is in transmission connection with the hollow drill bit so as to drive the hollow drill bit to rotate;

and an ear plate used for being connected with the mechanical arm of the excavating equipment is installed at the tail part of the support frame.

Further, the first driving device and the second driving device are both hydraulic motors.

Further, the transmission mechanism comprises an eddy current worm reducer and a rack; the rack is installed on the support frame, the second driving device and the vortex worm reducer are installed on the sliding block, and the second driving device is in meshing transmission with the rack through the vortex worm reducer.

Furthermore, the supporting frame is provided with a positioning platform which is used for abutting against the side surface of the cast-in-place pile.

Further, the abutting surface of the positioning table is an inwards concave arc surface.

Further, the hollow drill bit has an outer diameter of 0.5 m.

The utility model has the advantages that: the utility model discloses a coring drill passes through the otic placode to be installed on excavating equipment, rely on excavating equipment to operate, second drive arrangement drive hollow bit is rotatory, first drive arrangement drive slider is along linear guide forward motion, thereby it is internal to bore hollow bit into the stake, need the pile core separation of broken pile head section with the bored concrete pile, carry out pile core part construction mode with current adoption pneumatic pick and compare, adopt above-mentioned coring drill, not only the efficiency of construction is high, workman intensity of labour is also low, the construction cost of broken pile head has been practiced thrift greatly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the coring construction of the present invention;

shown in the figure: the device comprises a linear sliding table 1, a cast-in-place pile 2, a hollow drill bit 3, a first driving device 4, a second driving device 5, a reinforcement cage 7, a linear guide rail 11, a sliding block 12, a supporting frame 13, an ear plate 14, a positioning table 15, an eddy current worm reducer 61 and a rack 62.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and 2, the utility model discloses a coring drilling machine for bored concrete pile breaks pile head, including sharp slip table 1, first drive arrangement 4, second drive arrangement 5 and core bit 3. Linear sliding table 1 includes support frame 13, linear guide 11 and with 11 sliding fit's of linear guide slider 12, linear guide 11 installs on support frame 13, first drive arrangement 4 through drive mechanism with slider 12 is connected, in order to drive slider 12 is in make a round trip to slide on the linear guide 11, hollow drill bit 3 installs on slider 12, second drive arrangement 5 with 3 transmissions of hollow drill bit are connected, with hollow drill bit 3 is rotatory. Wherein, for the convenience of coring drill drilling, the otic placode 14 that is used for being connected with the excavating equipment arm is installed to support frame 13 afterbody (hollow bit 3 drilling direction is preceding), is equipped with two holes that are used for alternate hinge on the otic placode 14. So, can install coring drilling machine on excavating equipment arm to coring construction with the help of excavating equipment, it is more convenient to core the construction.

The outer diameter of the hollow drill bit 3 is selected according to the inner diameter of the reinforcement cage 7 in the cast-in-place pile 2, and generally the outer diameter of the hollow drill bit 3 needs to be 10-25 cm smaller than the inner diameter of the reinforcement cage of the cast-in-place pile, on the basis that the hollow drill bit 3 does not contact with the reinforcement cage 7 after drilling into the cast-in-place pile 2. The utility model discloses an in the concrete embodiment, 3 external diameters of hollow drill are 0.5 meters, can satisfy the bored concrete pile core construction of conventional diameter.

First drive arrangement 4 and second drive arrangement 5 all can be motor, gasoline engine etc, the utility model discloses in, first drive arrangement 4 and second drive arrangement 5 are hydraulic motor, so, can insert hydraulic motor among the excavating equipment hydraulic system.

When in use, the core drill is connected to the mechanical arm of the excavating equipment through the ear plate 14, and the construction of the core drill is controlled through the excavating equipment. During coring, the second driving device 5 drives the hollow drill bit 3 to rotate, and the first driving device 4 drives the slide block 12 to move forwards along the linear guide rail 11, so that the hollow drill bit 3 is drilled into the pile body. And after the hollow drill bit 3 drills into the required depth, the first driving device 4 rotates reversely, and the hollow drill bit 3 withdraws, so that the pile core concrete of the pile head section to be broken of the cast-in-place pile is isolated from the reinforcement cage, and the pile core is obtained. And finally, cutting off the pile core and hoisting. Compared with the existing construction mode of adopting an air pick to carry out a pile core part, the core drilling machine is high in construction efficiency and low in labor intensity of workers, and construction cost (labor cost) for breaking pile heads is greatly saved.

Specifically, the transmission mechanism includes an eddy current worm reducer 61 and a rack gear 62. The rack 62 is mounted on the support frame 13, and the second drive means 5 and the eddy current worm reducer 6 are mounted on the slide block 12. The second driving device 5 is engaged with the rack 62 through the eddy current worm reducer 61, so as to drive the slider 12 to slide back and forth on the linear guide rail 11. The eddy current worm reducer 61 can realize self-locking, so that the slide block can be prevented from automatically sliding under the action of gravity or external force. Of course, the second driving device 5 and the eddy current worm reducer 61 may be directly mounted on the supporting frame 13, and the second driving device 5 is matched with the sliding block 12 through a screw rod mounted on the supporting frame 13, so as to drive the sliding block 12 to slide back and forth on the linear guide rail 11. But the structure of such coring rigs is relatively less compact.

During the drilling process, the hollow drill bit 3 may not drill along the axial direction of the cast-in-place pile, i.e. drill obliquely, which may cause the reinforcing steel bars in the cast-in-place pile to be damaged. The embodiment of the utility model provides an in, be equipped with on the support frame 13 and be used for leaning on the location platform 15 by 2 sides of bored concrete pile. Wherein the abutment surface of the positioning table 15 is preferably a concave arc surface. When the core bit 3 is drilled, the positioning table 15 is placed against the side of the cast-in-place pile, so that the core bit 3 is prevented from drilling askew (see fig. 3).

Claims

1. The utility model provides a get core rig that is used for broken pile head of bored concrete pile which characterized in that: comprises a linear sliding table (1), a first driving device (4), a second driving device (5) and a hollow drill bit (3); the linear sliding table (1) comprises a support frame (13), a linear guide rail (11) and a sliding block (12) in sliding fit with the linear guide rail (11), and the linear guide rail (11) is installed on the support frame (13);

the first driving device (4) is connected with the sliding block (12) through a transmission mechanism so as to drive the sliding block (12) to slide back and forth on the linear guide rail (11), the hollow drill bit (3) is installed on the sliding block (12), and the second driving device (5) is in transmission connection with the hollow drill bit (3) so as to drive the hollow drill bit (3) to rotate;

and an ear plate (14) used for being connected with a mechanical arm of excavating equipment is installed at the tail part of the supporting frame (13).

2. A coring drill for a pile head of a cast-in-place pile as defined in claim 1, wherein: the first driving device (4) and the second driving device (5) are both hydraulic motors.

3. A coring drill for a pile head of a cast-in-place pile as defined in claim 1, wherein: the transmission mechanism comprises an eddy current worm reducer (61) and a rack (62); the rack (62) is installed on the support frame (13), the second driving device (5) and the vortex worm reducer (61) are installed on the sliding block (12), and the second driving device (5) is in meshing transmission with the rack (62) through the vortex worm reducer (61).

4. A coring drill for a pile head of a cast-in-place pile as defined in claim 1, wherein: and a positioning platform (15) used for abutting against the side surface of the cast-in-place pile is arranged on the support frame (13).

5. A coring drill for a pile head of a cast-in-place pile as defined in claim 4, wherein: the abutting surface of the positioning table (15) is an inwards concave cambered surface.

6. A coring drill for a pile head of a cast-in-place pile as defined in claim 1, wherein: the outer diameter of the hollow drill bit (3) is 0.5 m.