CN216277683U - Rotary drilling rig for drilling of pile group construction - Google Patents

Abstract

The present application discloses a rotary drilling rig for group pile construction drilling, which relates to the technical field of pile foundation construction equipment, including a connecting device fixed at the bottom of the rotary drilling rig body, and a driving mechanism fixed at the bottom of the connecting device. A drill bit body is fixed at the bottom position of the driving mechanism, a first installation cover is fixed symmetrically on both sides of the top of the drill bit body, and the inner cavity of the two sets of the first installation cover is provided with a cylinder fixed to the top position of the drill bit body , the output ends of the bottoms of the two sets of cylinders both extend to the inner cavity of the drill body and are fixed with push scrapers. In this application, after the drilling operation is completed, the body of the rotary drilling rig is started to drive the body of the drill bit to rise to an appropriate position, and at the same time, two sets of cylinders are started to extend to drive the push scraper to move down stably, so that the soil in the inner cavity of the drill body can pass through the opening at the bottom of the drill body. discharge, so as to make the self-unloading of the soil with high viscosity smooth.

Description

A rotary drilling rig for group pile construction drilling

technical field

The present application relates to the technical field of pile foundation construction equipment, in particular to a rotary drilling rig for drilling holes in pile group construction.

Background technique

The quality of the pile foundation will directly determine the quality of the superstructure. The pile group foundation is an important part of the pile foundation. During the construction of the pile group construction, drilling operations are required, and the rotary drilling rig is a very important drilling equipment. The traditional rotary drilling rig for group pile construction can basically meet the needs of people, but there are still some problems. The specific problems are as follows:

At present, most of the rotary drilling rigs for pile group construction drilling on the market need to rely on the self-weight of the soil to discharge the internal soil after the operation is completed, but the self-unloading efficiency is low when encountering soil with high viscosity. Auxiliary soil unloading is often required by means of manpower.

Utility model content

The application provides a rotary drilling rig for group pile construction drilling, which adopts the following technical solutions:

A rotary drilling rig for group pile construction drilling includes a connecting device fixed at the bottom of the rotary drilling rig body, a driving mechanism fixed at the bottom of the connecting device, and a drill bit body fixed at the bottom of the driving mechanism. The two sides of the top of the drill bit body are symmetrically fixed with first installation covers, the inner cavities of the two sets of the first installation covers are provided with cylinders that are fixed in position with the top of the drill bit body, and the output ends of the bottom of the two sets of cylinders are extended. to the inner cavity of the drill bit body and fixed with a push scraper.

By adopting the above technical solution, the drilling operation is carried out during the process of starting the driving head body to drive the drill body to rotate. When the drilling operation is completed, the rotary drilling rig body is started to drive the drill body to a proper position, and at the same time, two sets of cylinders are started to extend to drive the drill body. The push scraper moves down stably so that the soil in the inner cavity of the drill bit body is discharged through the opening at the bottom of the drill bit body, so that the self-unloading of the soil with high viscosity is smooth.

Optionally, in the above-mentioned rotary drilling rig for drilling group pile construction, the section of the drill bit body is set in a pot shape, and the opening direction of the pot shape is at the bottom.

By adopting the above technical solution, it is convenient to start the driving head body to drive the drill bit body to rotate during the drilling operation and facilitate the discharge of soil through the bottom of the drill bit body with the cooperation of the push scraper.

Optionally, in the above-mentioned rotary drilling rig for group pile construction drilling, the driving mechanism includes a second installation cover, the second installation cover is fixedly installed at the bottom of the connecting device, and the second installation cover has an inner cavity. The driving head body is fixed at the bottom position of the drill head body, and the output end of the bottom of the driving head body penetrates the bottom of the second installation cover and is fixed with the central position of the top of the drill head body.

By adopting the above technical solution, it is convenient to drive the drill bit body to rotate to perform drilling operations.

Optionally, in the above-mentioned rotary drilling rig for group pile construction drilling, the connecting device includes an upper connecting plate, the central position of the top of the upper connecting plate is fixed with the body of the rotary drilling rig, and the bottom of the upper connecting plate is fixed. A limit inner rod is fixed and welded at the middle position, a limit outer ring is movably sleeved at the outer position of the limit inner rod, and a lower connecting plate fixed to the top position of the driving mechanism is fixed at the bottom of the limit outer ring.

By adopting the above technical solution, when using the rotary drilling rig for drilling holes in the pile group construction, the body of the rotary drilling rig is first moved to an appropriate position, and then the lower connecting plate and the bit body are moved to the position just below the upper connecting plate and upward Pushing the main body of the drill bit drives the lower connecting plate to move synchronously so that the inner limit rod is engaged with the outer limit ring.

Optionally, in the above-mentioned rotary drilling rig for group pile construction, a fastening structure is provided inside the connecting device.

By adopting the above technical solutions, it is convenient to install, disassemble and replace the drill body.

Optionally, in the above-mentioned rotary drilling rig for group pile construction drilling, the fastening structure is a first threaded mechanism, and the first threaded mechanism includes a first threaded pipe, and the position around the inner rod is limited. Four groups of fastening concave holes are opened at equal angles, and the ends of the four groups of fastening concave holes opened in the inner limiter rod that are far away from each other pass through the outer wall of the limiter inner rod, and the four groups of the first threaded pipes are fixed at equal angles. Inlaid at the surrounding positions inside the limiting outer ring, the inner cavities of the four groups of the first threaded pipes are all threadedly sleeved with first threaded rods respectively extending to the inner cavities of the four groups of fastening concave holes.

By adopting the above technical solution, the four groups of first threaded rods are screwed in turn, so that the first threaded rods gradually extend into the inner cavity of the fastening concave hole under the action of the four groups of first threaded pipes. The position of the lower connecting plate and the drill body is automatically fixed after the fastening recessed holes are fully engaged.

Optionally, in the above-mentioned rotary drilling rig for drilling group pile construction, the fastening structure is a second thread mechanism, and the six groups of second thread mechanisms are all arranged at the outer position of the limit outer ring.

By adopting the above technical solution, the lower connecting plate and the drill bit body are moved to the position directly below the upper connecting plate, and the drill bit body is pushed upward to drive the lower connecting plate to move synchronously, so that the position of the inner limit rod and the outer limit ring is relatively positive. A two-threaded mechanism fixes the position of the lower connecting plate and the drill body.

Optionally, in the above-mentioned rotary drilling rig for group pile construction drilling, the second threaded mechanism includes a second threaded pipe, and six groups of the second threaded pipes are equiangularly fixed and welded at the bottom position of the upper connecting plate, and The bottom position of the second threaded pipe is set as an opening, the inner cavity of the six groups of the second threaded pipe is threadedly sleeved with a second threaded rod penetrating the bottom of the second threaded pipe, and the bottom positions of the six groups of the second threaded rod pass through the bearing Rotate connection with the top position of the lower connecting plate.

By adopting the above technical solution, the six groups of second threaded rods are screwed so that the second threaded rods rotate through the bearings and are threadedly connected with the six groups of second threaded pipes, until the inner limiting rods fully extend into the inner cavity of the outer limiting ring in order to automatically fix the position of the lower connecting plate and the drill body.

To sum up, the present application includes at least one of the following beneficial effects: when the drilling operation is completed, the rotary drilling rig body is started to drive the drill bit body to rise to an appropriate position, and at the same time, two sets of cylinders are started to extend to drive the push scraper to move down stably so that the The soil in the inner cavity of the drill bit body is discharged through the opening at the bottom of the drill bit body, so that the self-unloading of the soil with high viscosity is smooth.

Description of drawings

1 is a schematic view of the overall structure of the first embodiment of the application;

2 is a schematic structural diagram of the connection between the connection device, the drill bit body and the second thread mechanism according to the first embodiment of the application;

3 is a schematic diagram of a specific structure of a connection device according to an embodiment of the present application;

4 is a schematic diagram of the overall structure of the second embodiment of the application;

5 is a schematic structural diagram of the connection between the connection device, the drill bit body and the second thread mechanism according to the second embodiment of the present application;

FIG. 6 is a schematic diagram of a specific structure of a connecting device according to Embodiment 2 of the present application;

FIG. 7 is a schematic diagram of the three-dimensional structure of the drill body of the present application.

In the figure: 1. The body of the rotary drilling rig; 2. The upper connecting plate; 3. The lower connecting plate; 4. The drill body; 5. The first installation cover; 6. The air cylinder; , second installation cover; 802, drive head body; 9, limit outer ring; 10, limit inner rod; 11, first threaded mechanism; 1101, first threaded rod; 1102, first threaded pipe; 1103, tightening Fixing concave hole; 12. Second threaded mechanism; 1201, Second threaded pipe; 1202, Second threaded rod.

Detailed ways

The present application will be further described in detail below in conjunction with accompanying drawings 1-7.

Example 1:

Please refer to Figures 1-3 in the accompanying drawings of the description: an embodiment provided by the present application: a rotary drilling rig for drilling group pile construction, including a connection device fixed at the bottom of the rotary drilling rig body 1, and the bottom of the connection device is The driving mechanism 8 is fixed in position, the bottom of the driving mechanism 8 is fixed with the drill bit body 4, the two sides of the top of the drill bit body 4 are symmetrically fixed with the first installation cover 5, and the inner cavity of the two sets of the first installation cover 5 is provided with the drill bit. Cylinders 6 with fixed positions at the top of the body 4, the output ends of the bottoms of the two groups of cylinders 6 all extend to the inner cavity of the drill body 4 and are fixed with a push scraper 7.

Please refer to Figures 2, 4 and 5 in the accompanying drawings: the section of the drill bit body 4 is set as a pot shape, and the opening direction of the pot shape is at the bottom, which is convenient for starting the driving head body 802 to drive the drill bit body 4 to rotate during the process of drilling. Work and cause the soil to drain through the bottom of the bit body 4 .

Please refer to Figures 2 and 5 in the accompanying drawings: the driving mechanism 8 includes a second installation cover 801, the second installation cover 801 is fixedly installed at the bottom position of the connecting device, and the drive head body is fixed at the bottom position of the inner cavity of the second installation cover 801 802, the bottom output end of the driving head body 802 penetrates the bottom of the second installation cover 801 and is fixed with the top central position of the drill bit body 4. The driving head body 802 is activated to drive the drill bit body 4 to rotate to perform drilling operations.

Please refer to Figures 2 and 3 in the accompanying drawings: the fastening structure is a first threaded mechanism 11, the first threaded mechanism 11 includes a first threaded pipe 1102, and four groups of fastenings are provided at equal angles around the interior of the limiting inner rod 10 The concave hole 1103, and the ends of the four groups of fastening concave holes 1103 opened in the inner limiter rod 10 that are far away from each other all penetrate the outer wall of the limiter inner rod 10, and the four groups of first threaded pipes 1102 are fixed and embedded outside the limiter at equal angles. At the surrounding positions inside the ring 9, the inner cavities of the four groups of first threaded pipes 1102 are all threadedly sleeved with first threaded rods 1101 extending to the inner cavities of the four groups of fastening concave holes 1103, respectively, to move the lower connecting plate 3 and the drill bit body 4. Go to the position just below the upper connecting plate 2 and push the drill bit body 4 upward to drive the lower connecting plate 3 to move synchronously, so that the inner limit rod 10 is engaged with the outer limit ring 9, and the four groups of first threaded rods 1101 are screwed in turn to Under the action of the four groups of first threaded pipes 1102 , the first threaded rods 1101 gradually extend into the inner cavity of the fastening concave hole 1103 .

Please refer to Figures 3, 5 and 6 in the accompanying drawings: the connecting device includes an upper connecting plate 2, the top central position of the upper connecting plate 2 is fixed with the rotary drilling rig body 1, and the fixed welding at the middle position of the bottom of the upper connecting plate 2 is limited. Positioning the inner rod 10, the outer position of the limiting inner rod 10 is movably sleeved with a limiting outer ring 9, the bottom of the limiting outer ring 9 is fixed with a lower connecting plate 3 fixed with the top position of the driving mechanism 8, and the lower connecting plate 3 Move the drill bit body 4 to the position just below the upper connecting plate 2 and push the drill bit body 4 upward to drive the lower connecting plate 3 to move synchronously so that the inner limit rod 10 is engaged with the outer limit ring 9, and the four sets of first The threaded rod 1101 thus makes the first threaded rod 1101 gradually protrude into the inner cavity of the fastening concave hole 1103 under the action of the four groups of first threaded pipes 1102 .

Please refer to Figures 5-7 in the accompanying drawings of the description: a fastening structure is provided inside the connecting device, which is convenient for installation, disassembly and replacement of the drill body 4 .

Working principle: When using the rotary drilling rig for drilling drilling in pile group construction, first move the rotary drilling rig body 1 to an appropriate position, then move the lower connecting plate 3 and the drill bit body 4 to the position just below the upper connecting plate 2 and Push the drill bit body 4 upward to drive the lower connecting plate 3 to move synchronously, so that the inner limit rod 10 is engaged with the outer limit ring 9, and the four groups of first threaded rods 1101 are screwed in turn, so that the four groups of first threaded pipes 1102 function Then, the first threaded rod 1101 gradually extends into the inner cavity of the fastening concave hole 1103. When the first threaded rod 1101 is fully engaged with the fastening concave hole 1103, the position of the lower connecting plate 3 and the drill bit body 4 is automatically fixed. Then start the driving head body 802 to drive the drill body 4 to rotate during the drilling operation. When the drilling operation is completed, start the rotary drilling rig body 1 to drive the drill body 4 to rise to a proper position, and simultaneously start the two sets of cylinders 6 to extend and drive the The pushing scraper 7 moves down stably so that the soil in the inner cavity of the drill bit body 4 is discharged through the opening at the bottom of the drill bit body 4 , so that the self-unloading of the soil with high viscosity is smooth.

Embodiment 2:

Please refer to Figures 5 and 6 in the accompanying drawings: the difference between the second embodiment and the first embodiment is that the second embodiment includes: the fastening structure is the second threaded mechanism 12, and the six groups of the second threaded mechanism 12 are all set at the limit At the outer position of the outer ring 9, when using the rotary drilling rig for drilling holes in the pile group construction, first move the rotary drilling rig body 1 to an appropriate position, and then move the lower connecting plate 3 and the drill bit body 4 to the upper connecting plate 2. Position directly below and push the drill body 4 upward to drive the lower connecting plate 3 to move synchronously, so that the position of the inner limit rod 10 and the outer limit ring 9 are relatively positive, and the lower connecting plate 3 and the drill body 4 are automatically fixed by the second threaded mechanism 12 s position.

Please refer to Figures 5 and 6 in the accompanying drawings: the second threaded mechanism 12 includes a second threaded pipe 1201, six groups of second threaded pipes 1201 are fixedly welded at the bottom of the upper connecting plate 2 at equal angles, and the second threaded pipes 1201 are The bottom position is set as an opening, the inner cavity of the six groups of second threaded pipes 1201 is threadedly sleeved with second threaded rods 1202 penetrating the bottom of the second threaded pipes 1201, and the bottom positions of the six groups of second threaded rods 1202 are connected to the lower connecting plate through bearings. 3. Rotate connection at the top position, and screw the six groups of second threaded rods 1202 so that the second threaded rods 1202 rotate through the bearings and are respectively threaded with the six groups of second threaded pipes 1201 until the inner limit rod 10 fully extends outside the limit The inner cavity of the ring 9 thus automatically fixes the position of the lower connecting plate 3 and the drill body 4 .

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims (8)

1. A rotary drilling rig for group pile construction drilling, comprising a rotary drilling rig body (1), characterized in that: a connection device is fixed at the bottom position of the rotary drilling rig body (1), and the bottom position of the connection device is fixed There is a driving mechanism (8), a drill bit body (4) is fixed at the bottom of the driving mechanism (8), and a first installation cover (5) is symmetrically fixed on both sides of the top of the drill bit body (4). The inner cavity of the first installation cover (5) is provided with a cylinder (6) fixed to the top position of the drill bit body (4), and the output ends of the bottom of the two sets of cylinders (6) both extend to the drill bit body (4) The inner cavity is fixed with a push scraper (7). 2 . The rotary drilling rig for drilling group pile construction according to claim 1 , wherein the cross section of the drill bit body ( 4 ) is set in a pot shape, and the opening direction of the pot shape is at the bottom. 3 . 3. The rotary drilling rig for pile group construction drilling according to claim 1, characterized in that: the driving mechanism (8) comprises a second installation cover (801), and the second installation cover (801) is fixedly installed At the bottom position of the connecting device, a drive head body (802) is fixed at the bottom position of the inner cavity of the second installation cover (801), and the bottom output end of the drive head body (802) penetrates the bottom of the second installation cover (801). And it is fixed with the central position of the top of the drill body (4). 4. The rotary drilling rig for group pile construction drilling according to claim 1, characterized in that: the connecting device comprises an upper connecting plate (2), the central position of the top of the upper connecting plate (2) and the rotation The main body (1) of the drilling rig is fixed, the inner limit rod (10) is fixedly welded at the middle position of the bottom of the upper connecting plate (2), and the outer position of the inner limit rod (10) is movably sleeved with a limit outer rod. A ring (9), the bottom of the limit outer ring (9) is fixed with a lower connecting plate (3) fixed to the top of the drive mechanism (8). 5 . The rotary drilling rig for group pile construction according to claim 4 , wherein a fastening structure is provided inside the connecting device. 6 . 6 . The rotary drilling rig for drilling in pile group construction according to claim 5 , wherein the fastening structure is a first thread mechanism ( 11 ), and the first thread mechanism ( 11 ) comprises a first thread mechanism ( 11 ). 7 . The threaded pipe (1102) has four sets of fastening concave holes (1103) at equal angles around the inner limiter rod (10), and four sets of fastening concave holes are opened inside the limiter inner rod (10). (1103) The ends that are far away from each other all penetrate the outer wall of the limiting inner rod (10). The inner cavities of the first threaded pipes (1102) are all threadedly sleeved with first threaded rods (1101) respectively extending into the inner cavities of the four groups of fastening concave holes (1103). 7 . The rotary drilling rig for group pile construction drilling according to claim 5 , wherein the fastening structure is a second thread mechanism ( 12 ), and six groups of second thread mechanisms ( 12 ) are all provided On the outside of the limit outer ring (9). 8 . The rotary drilling rig for group pile construction according to claim 7 , wherein the second screw mechanism ( 12 ) comprises a second screw pipe ( 1201 ), and six sets of the second screw pipe (1201) is fixedly welded at the bottom position of the upper connecting plate (2) at an equal angle, and the bottom position of the second threaded pipe (1201) is set as an opening, and the six groups of the second threaded pipe (1201) are threadedly sleeved in the inner cavity There is a second threaded rod (1202) penetrating the bottom of the second threaded pipe (1201), and the bottom positions of the six groups of the second threaded rods (1202) are rotatably connected to the top position of the lower connecting plate (3) through bearings.

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