Hydraulic type full-rotation casing pipe drilling device

Abstract

The utility model relates to the technical field of hydraulic full-rotation casing pipe drilling equipment, in particular to a hydraulic full-rotation casing pipe drilling device which comprises a full-rotation casing pipe drilling body and a guide mechanism arranged on the full-rotation casing pipe drilling body and used for clamping and positioning a casing pipe. The guide mechanism comprises two connecting seats symmetrically arranged on the full-rotation casing drill body, positioning chucks arranged on the connecting seats in a limiting mode and telescopic cylinders arranged on the connecting seats and used for adjusting clamping of the two positioning chucks. And a plurality of contact rollers which are in rolling contact with the outer wall of the sleeve are arranged in the positioning chuck. The telescopic cylinder is adjusted to drive the left positioning chuck and the right positioning chuck to make contact with the outer wall of the casing pipe, specifically, the contact rollers installed on the positioning chucks make contact with the outer wall of the casing pipe for supporting, and therefore the vertical state of the casing pipe is guided through the two positioning chucks, and the purpose of clamping and guiding is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic full-rotation casing drilling equipment, and in particular to a hydraulic full-rotation casing drilling device. Background Technology

[0002] In conventional pile foundation engineering, the verticality deviation of the borehole must be controlled within ±0.5% to 1%, otherwise it will lead to insufficient bearing capacity of the pile foundation or structural eccentricity. When encountering gravel layers, karst caves, or alternating soft and hard strata, the casing is prone to lateral force displacement. If the casing continues to deviate, it will cause the slewing bearing to bear asymmetrical loads, accelerating bearing wear (the lifespan may be shortened by more than 50% under eccentric load conditions). Based on this, it is necessary to design a device that can guide the casing in a hydraulic full-rotation casing drilling rig. Utility Model Content

[0003] The purpose of this invention is to provide a hydraulic full-rotation casing drilling device to solve the problem that casings are prone to shifting due to lateral forces during drilling in conventional pile foundation engineering.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a hydraulic full-rotation casing drilling device, including a full-rotation casing drill body and a guide mechanism disposed on the full-rotation casing drill body for clamping and positioning the casing.

[0006] The guiding mechanism includes two connecting seats symmetrically arranged on the full-rotation casing drill body, a positioning chuck limited on the connecting seats, and a telescopic cylinder arranged on the connecting seats for adjusting the clamping of the two positioning chucks.

[0007] The positioning chuck is provided with multiple contact rollers that roll in contact with the outer wall of the sleeve.

[0008] Furthermore, the positioning chuck has a semi-circular structure, and at least two symmetrical horizontal guide posts are provided on the back of the positioning chuck. A guide sleeve adapted to the horizontal guide posts is provided on the connecting seat.

[0009] Furthermore, a reserved groove for assembling multiple contact rollers is provided in the positioning chuck, and the two ends of the contact rollers are vertically arranged in the reserved groove through roller shafts and bearings.

[0010] Furthermore, a limit plate is provided on the horizontal guide column.

[0011] Furthermore, the telescopic cylinder is fixed on the connecting seat, and its telescopic rod end is provided with a push seat that contacts the outer wall of the positioning chuck. A pressure sensor that detects the thrust applied by the telescopic cylinder is provided on the push seat.

[0012] Furthermore, a through groove adapted to the horizontal guide post is provided on the push base, and the push base is located between the limiting plate and the positioning chuck.

[0013] Furthermore, the push base is provided with an arc-shaped structure that fits against the outer wall of the positioning chuck, and an arc-shaped groove for equipping the pressure sensor is provided in the arc-shaped structure.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] In this invention, when the sleeve passes through the middle position of the two positioning chucks, the telescopic cylinder is adjusted to drive the left and right positioning chucks to contact the outer wall of the sleeve. Specifically, the contact rollers installed on the positioning chucks contact and support the outer wall of the sleeve, thereby guiding the vertical state of the sleeve through the two positioning chucks, achieving the purpose of clamping and guiding, and assisting in correcting the deviation of the sleeve. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the hydraulic full-rotation casing drilling device of this utility model;

[0018] Figure 2 This is a schematic diagram of the upper guide mechanism of the hydraulic full-rotation casing drilling device of this utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the adjustment state;

[0020] Figure 4 for Figure 2 Schematic diagram of the arrangement of the clamping guide rollers;

[0021] Figure 5 for Figure 4 Mid-section schematic diagram.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Full-rotation casing drill body; 2. Casing; 3. Guide mechanism; 31. Positioning chuck; 32. Contact roller; 321. Roller shaft; 33. Horizontal guide column; 331. Guide sleeve; 332. Limiting plate; 34. Connecting seat; 35. Telescopic cylinder; 36. Push seat; 37. Pressure sensor. Detailed Implementation

[0024] refer to Figure 1 This embodiment discloses a hydraulic full-rotation casing drilling device, including a full-rotation casing drill body 1 and a guide mechanism 3 disposed on the full-rotation casing drill body 1 for clamping and positioning the casing 2.

[0025] refer to Figure 2 The guiding mechanism 3 includes two connecting seats 34 symmetrically installed on the full-rotation casing drill body 1, a positioning chuck 31 limited and installed on the connecting seats 34, and a telescopic cylinder 35 installed on the connecting seats 34 for adjusting the clamping of the two positioning chucks 31; wherein a plurality of contact rollers 32 that roll in contact with the outer wall of the casing 2 are installed in the positioning chuck 31.

[0026] In use, when the sleeve 2 passes through the middle position of the two positioning chucks 31, the telescopic cylinder 35 is adjusted to drive the left and right positioning chucks 31 to contact the outer wall of the sleeve 2. Specifically, the contact rollers 32 installed on the positioning chucks 31 contact and support the outer wall of the sleeve 2, thereby guiding the sleeve 2 to a vertical state through the two positioning chucks 31.

[0027] refer to Figure 2 and Figure 3 The positioning chuck 31 has a semi-circular structure. Two symmetrical horizontal guide posts 33 are installed on the back of the positioning chuck 31. A guide sleeve 331 adapted to the horizontal guide posts 33 is assembled on the connecting seat 34.

[0028] refer to Figure 4 and Figure 5 In this embodiment, a reserved slot for assembling multiple contact rollers 32 is provided in the positioning chuck 31, and the two ends of the contact rollers 32 are vertically installed in the reserved slot through roller shafts 321 and bearings.

[0029] In this embodiment, a limiting plate 332 is fixedly installed on the horizontal guide post 33, and a through groove adapted to the horizontal guide post 33 is provided on the push seat 36, and the push seat 36 is located between the limiting plate 332 and the positioning chuck 31; thus, when the telescopic cylinder 35 drives the push seat 36 away from the sleeve 2, it can drive the horizontal guide post 33 and the positioning chuck 31 away from the sleeve 2, thereby achieving the purpose of disassembling or installing the sleeve 2.

[0030] In this embodiment, the telescopic cylinder 35 is fixed on the connecting seat 34, and a push seat 36 that contacts the outer wall of the positioning chuck 31 is installed at the end of its telescopic rod. A pressure sensor 37 that detects the thrust applied by the telescopic cylinder 35 is installed on the push seat 36. The push seat 36 is designed with an arc surface structure that fits against the outer wall of the positioning chuck 31 to facilitate uniform force distribution. An arc-shaped groove for equipping the pressure sensor 37 is provided in the arc surface structure, so that the thrust of the telescopic cylinder 35 can be detected by means of the pressure sensor 37.

[0031] As another implementation, an X-direction guide mechanism 3 and a Y-direction guide mechanism 3 can be installed on the full-rotation casing drill body 1; wherein the two are arranged vertically and their adjustment directions are perpendicular to each other.

[0032] In addition, multiple distance sensors, such as ultrasonic sensors, can be installed on the connecting seats 34 of each guide mechanism 3 to detect whether the sleeve 2 is deviated. By detecting changes in the distance sensor values, the extension and retraction of the telescopic cylinders 35 of different guide mechanisms can be controlled to perform correction adjustment.

[0033] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A hydraulic full-rotation casing drilling device, characterized in that: It includes a full-rotation casing drill body (1) and a guide mechanism (3) disposed on the full-rotation casing drill body (1) for clamping and positioning the casing (2); The guiding mechanism (3) includes two connecting seats (34) symmetrically arranged on the full-rotation casing drill body (1), a positioning chuck (31) limited on the connecting seats (34), and a telescopic cylinder (35) arranged on the connecting seats (34) for adjusting the clamping of the two positioning chucks (31). The positioning chuck (31) is provided with a plurality of contact rollers (32) that roll in contact with the outer wall of the sleeve (2).

2. The hydraulic full-rotation casing drilling device according to claim 1, characterized in that: The positioning chuck (31) has a semi-circular structure. At least two symmetrical horizontal guide posts (33) are provided on the back of the positioning chuck (31). A guide sleeve (331) adapted to the horizontal guide posts (33) is provided on the connecting seat (34).

3. The hydraulic full-rotation casing drilling device according to claim 2, characterized in that: The positioning chuck (31) has a reserved slot for assembling a plurality of contact rollers (32), and the two ends of the contact rollers (32) are vertically arranged in the reserved slots through roller shafts (321) and bearings.

4. The hydraulic full-rotation casing drilling device according to claim 2, characterized in that: A limit plate (332) is provided on the horizontal guide column (33).

5. The hydraulic full-rotation casing drilling device according to claim 4, characterized in that: The telescopic cylinder (35) is fixed on the connecting seat (34), and its telescopic rod end is provided with a push seat (36) that contacts the outer wall of the positioning chuck (31). A pressure sensor (37) is provided on the push seat (36) to detect the thrust applied by the telescopic cylinder (35).

6. The hydraulic full-rotation casing drilling device according to claim 5, characterized in that: A through groove adapted to the horizontal guide post (33) is provided on the push base (36), and the push base (36) is located between the limiting plate (332) and the positioning chuck (31).

7. The hydraulic full-rotation casing drilling device according to claim 5, characterized in that: An arc-shaped structure that fits against the outer wall of the positioning chuck (31) is provided on the push base (36), and an arc-shaped groove for equipping the pressure sensor (37) is provided on the arc-shaped structure.

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