Underwater rock mass drilling apparatus and method

Abstract

The application discloses an underwater rock mass drilling device, which comprises a drilling assembly, a height adjusting assembly and a supporting assembly, the drilling assembly comprises a drill rod and a drill bit, the height adjusting assembly is provided with a sleeve, the supporting assembly comprises a rectangular frame body which is surrounded by four telescopic members connected in a head-to-tail mode, and a plurality of telescopic rods are connected between the rectangular frame body and the sleeve. The application further discloses a drilling method based on the underwater rock mass drilling device, which can adjust the position of the drill bit through the plurality of telescopic rods, improve the accuracy of the drilling position, and can successively complete a plurality of drilling tasks within the range surrounded by the plurality of telescopic members, thereby improving the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of underwater rock drilling technology. More specifically, this invention relates to an underwater rock drilling apparatus and method. Background Technology

[0002] In underwater rock plug blasting operations for hydroelectric projects, to ensure the quality of the rock plug opening meets design requirements, several pre-splitting holes are typically arranged around the rock plug along the design boundary line during the blasting design. The drilling accuracy of these pre-splitting holes often requires high precision. The conventional approach is to place the drilling rig in position, observe with measuring instruments, adjust it gradually, and then fix the rig on pre-erected scaffolding. Throughout the entire adjustment and fixing process, the measuring instruments need to continuously observe, which is time-consuming, cumbersome, inconvenient to operate, and results in low positioning accuracy. While a drill rod positioning device for drilling pre-splitting holes in underwater rock plug blasting is disclosed in patent CN204311992U, which solves the positioning technical problem, this device is only suitable for drilling in a straight line and is difficult to adapt to the complex underwater environment during actual construction. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0004] Another objective of this invention is to provide an underwater rock drilling device and method, which has a reasonable structural design, is easy to operate, and can effectively improve drilling efficiency.

[0005] To achieve these objectives and other advantages of the present invention, an underwater rock drilling apparatus is provided, comprising:

[0006] A drilling assembly includes a drill rod and a drill bit. A hydraulic cylinder is installed at the bottom of the drill bit, and the drill bit is coaxially mounted at the bottom of the hydraulic cylinder. The side wall of the drill rod has multiple grooves along the axial direction, and a screw is installed in each groove. The multiple screws are all connected to a first synchronous motor.

[0007] The height adjustment assembly includes a sleeve fitted around the outer periphery of the drill rod. The inner sidewall of the sleeve is provided with a plurality of protruding ribs along the axial direction. Each protruding rib is provided with a threaded hole along the axial direction. The plurality of protruding ribs are matched and accommodated in a plurality of grooves, and the screw is rotated and inserted into the corresponding threaded hole.

[0008] The support assembly includes a rectangular frame formed by four telescopic members connected end to end. Each telescopic member consists of a sleeve rod and two insert rods. The two insert rods are symmetrically slidably inserted into the sleeve rod from both ends. The sleeve rod has annular protrusions extending inward perpendicular to the side wall at both ends. The ends of the two insert rods that are close to each other are each provided with limiting edges extending outward perpendicular to the side wall. The side walls of the four sleeve rods are all hinged to the side wall of the sleeve, and each sleeve rod has a support rod at its bottom.

[0009] Preferably, the outer side wall of the drill bit is provided with a first helical blade, the drill bit is rotatably connected to a hydraulic cylinder, and the drill bit is connected to a first motor to drive its rotation.

[0010] Preferably, all four telescopic rods are hydraulic telescopic rods.

[0011] Preferably, each support rod is rotatably connected to the bottom of the sleeve rod, and multiple support rods are connected to a second synchronous motor to drive them to rotate synchronously.

[0012] Preferably, each support rod has a second helical blade on its outer side wall.

[0013] Preferably, each insert has a groove along its sidewall and a plurality of sliders corresponding to the grooves along its inner sidewall. Each slider is accommodated in the groove and a plurality of balls are provided at the end of each slider near the inner wall of the groove.

[0014] The present invention also provides a drilling method for an underwater rock drilling device, comprising the following steps:

[0015] Step 1: Lower the drilling assembly, along with the height adjustment assembly and the support assembly, to the underwater drilling position.

[0016] Step 2: With the drill rod in a fixed position, the four hydraulic telescopic rods extend, expanding the perimeter of the rectangular frame;

[0017] Step 3: Start the first synchronous motor to drive multiple screws to rotate, so that the sleeve and support assembly slide down the drill rod to the specified height. Start the second synchronous motor to drive multiple support rods to drill small holes in the underwater rock mass. Then, the first and second synchronous motors stop working, and the multiple support rods fix the support assembly in the specified area of ​​the rock mass.

[0018] Step 4: With the drill rod in a follow-up state, the position of the drill bit is adjusted within a small range by extending and retracting the four hydraulic telescopic rods. Once the drill bit is precisely aligned with the designated position, the first motor and hydraulic cylinder are turned on, and the drill bit is used to complete the underwater rock drilling work. After the drilling is completed, the position of the drill bit is adjusted within a small range again by extending and retracting the four hydraulic telescopic rods to complete multiple small-range drilling operations.

[0019] The present invention has at least the following beneficial effects:

[0020] First, the underwater rock drilling device of the present invention has a reasonable structural design. By setting multiple telescopic rods, the position of the drill bit can be flexibly adjusted, thereby improving the positioning accuracy of the drill bit.

[0021] Secondly, the drilling method of the underwater rock drilling device described in this invention is easy to operate, allowing the drill bit to complete multiple drilling tasks successively within the area enclosed by the rectangular frame, effectively improving drilling efficiency.

[0022] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of one technical solution of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of multiple telescopic rods when they are extended in one technical solution of the present invention;

[0025] Figure 3 This is a cross-sectional view of one technical solution of the present invention;

[0026] Figure 4 This is a cross-sectional view of the drill bit moving to the left in one of the technical solutions of the present invention;

[0027] Figure 5 This is a cross-sectional view of the drill bit moving upwards in one of the technical solutions of the present invention. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials mentioned are commercially available. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] like Figures 1-5 As shown, the present invention provides an underwater rock drilling device, comprising:

[0032] A drilling assembly includes a drill rod 100 and a drill bit 101. A hydraulic cylinder is installed at the bottom of the drill bit 101, and the drill bit 101 is coaxially mounted at the bottom of the hydraulic cylinder. The side wall of the drill rod 100 has multiple grooves 102 along the axial direction. A screw 103 is installed in each groove 102, and the multiple screws 103 are all connected to a first synchronous motor.

[0033] The height adjustment assembly includes a sleeve 200 sleeved around the outer periphery of the drill rod 100. The inner sidewall of the sleeve 200 is provided with a plurality of protrusions 201 along the axial direction. Each protrusion 201 is provided with a threaded hole 202 along the axial direction. The plurality of protrusions 201 are matched and accommodated in a plurality of grooves 102, and the screw 103 is rotated and inserted into the corresponding threaded hole 202.

[0034] The support assembly includes a rectangular frame formed by four telescopic members connected end to end. Each telescopic member consists of a sleeve rod 300 and two insert rods 301. The two insert rods 301 are symmetrically slidably inserted into the sleeve rod 300 from both ends. The sleeve rod 300 has annular protrusions extending inward perpendicular to the side wall at both ends. The ends of the two insert rods 301 that are close to each other are each provided with limiting edges extending outward perpendicular to the side wall. Telescopic rods 302 are hinged between the side walls of the four sleeve rods 300 and the side wall of the sleeve 200. Each sleeve rod 300 has a support rod 303 at its bottom.

[0035] In this technical solution, the underwater rock drilling device includes a drilling assembly, a height adjustment assembly, and a support assembly. The height adjustment assembly is provided with a sleeve 200 fitted around the outer periphery of the drill rod 100, and the support assembly is provided with a rectangular frame surrounding the outer periphery of the sleeve 200. The drilling assembly includes a drill rod 100 and a drill bit 101. A hydraulic cylinder is connected between the drill rod 100 and the drill bit 101. The non-output end of the hydraulic cylinder is fixedly connected to the bottom end of the drill rod 100, and the output end is coaxially connected to the drill bit 101. The side wall of the drill rod 100 has multiple grooves 102, and a screw 103 is rotatably installed in each groove 102. Each groove 102, screw 103, and axis of the drill rod 100 are parallel to each other. The sleeve 200... 0 is a hollow structure with openings at both ends. Its inner wall is provided with multiple protruding ribs 201 parallel to the grooves 102. The multiple protruding ribs 201 correspond one-to-one with the multiple grooves 102. Each protruding rib 201 has a threaded hole 202 along the axis that matches the screw 103. The sleeve 200 is fitted around the outer circumference of the drill rod 100 so that the screw 103 is accommodated in the threaded hole 202. The rotation of the screw 103 can drive the sleeve 200 to move up and down along the axis of the drill rod 100. The rectangular frame is composed of four telescopic components connected vertically. Each telescopic component consists of a central sleeve rod 300 and two end insert rods 301. The two insert rods 301 are slidably inserted into the sleeve rod 300 from both ends. The ends of the two insert rods 301 that are close to each other are provided with limiting edges extending outward perpendicular to the sidewall. The two ends of the sleeve rod 300 are provided with annular protrusions extending inward perpendicular to the sidewall. The annular protrusions and limiting edges interlock to prevent the insert rods 301 from slipping out. The four telescopic components are a first telescopic component, a third telescopic component, a second telescopic component, and a fourth telescopic component that are parallel to each other. The second telescopic component and the fourth telescopic component... The telescopic component is located between the first telescopic component and the third telescopic component. The ends of the two insert rods 301 of the second telescopic component that are far apart from each other are perpendicularly fixed to the end sidewalls of the insert rods 301 of the first and third telescopic components that are on the same side. Similarly, the ends of the two insert rods 301 of the fourth telescopic component that are far apart from each other are perpendicularly fixed to the end sidewalls of the insert rods 301 of the first and third telescopic components that are on the same side. Each of the four sleeve rods 300 is connected to the sleeve 200 by a telescopic rod 302. Both ends of the telescopic rod 302 are hinged to the sidewalls of the sleeve rods 300 and the sleeve 200. Each sleeve rod 300 is also provided with a downwardly extending support rod 303.The height adjustment component is configured such that the rotation of the screw 103 drives the sleeve 200 to move up and down along the drill rod 100, facilitating smooth adjustment of the height of the sleeve 200. This, in turn, drives the support component to move up and down. The support component consists of four telescopic members. The extension and retraction of the four telescopic rods 302 causes the four telescopic members to extend or retract, thereby adjusting the area of ​​the rectangular frame and determining the movement range of the drill bit 101. The support component is fixed by the support rod 303, and the extension and retraction of the four telescopic rods 302 drives the drill bit 101 to move, thus accurately positioning the drill bit 101. The position of the drill bit 101 can also be adjusted slightly within the area enclosed by the rectangular frame, allowing multiple drilling operations to be completed successively without repositioning, effectively improving drilling efficiency.

[0036] In another technical solution, the outer wall of the drill bit 101 is provided with a first helical blade 104, the drill bit 101 is rotatably connected to a hydraulic cylinder, and the drill bit 101 is connected to a first motor to drive its rotation. In this technical solution, the first helical blade 104 is provided on the outer side of the drill bit 101, and the first motor drives the drill bit 101 to rotate, which facilitates drilling into the rock mass.

[0037] In another technical solution, all four telescopic rods 302 are hydraulic telescopic rods. In this technical solution, the four hydraulic telescopic rods can be extended or shortened respectively, allowing for convenient and flexible adjustment of the drill bit 101 position.

[0038] In another technical solution, each support rod 303 is rotatably connected to the bottom of the sleeve rod 300, and multiple support rods 303 are connected to a second synchronous motor to drive their synchronous rotation. In this technical solution, the support rods 303 are rotatably inserted into the rock mass, which facilitates the fixation of the support assembly.

[0039] In another technical solution, a second helical blade 304 is provided on the outer wall of each support rod 303. In this technical solution, the second helical blade 304 is provided on the outer side of the support rod 303 to facilitate insertion into the rock mass for fixation.

[0040] In another technical solution, each insertion rod 301 has a groove 305 axially provided on its sidewall, and each sleeve rod 300 has multiple sliders axially corresponding to the grooves 305 on its inner sidewall. Each slider is accommodated within the groove 305, and multiple balls are provided at the end of each slider near the inner wall of the groove 305. In this technical solution, the insertion rod 301 and sleeve rod 300 are provided with matching sliders and grooves 305, and balls are provided at the top of the sliders to facilitate the smooth sliding of the insertion rod 301.

[0041] The present invention also provides a drilling method for an underwater rock drilling device, comprising the following steps:

[0042] Step 1: Lower the drilling assembly, along with the height adjustment assembly and the support assembly, to the underwater drilling position.

[0043] Step 2: With drill rod 100 in a fixed position, the four hydraulic telescopic rods extend, expanding the perimeter of the rectangular frame;

[0044] Step 3: Start the first synchronous motor to drive multiple screws 103 to rotate, so that the sleeve 200 and the support assembly slide down the drill rod 100 to the specified height. Start the second synchronous motor to drive multiple support rods 303 to drill small holes in the underwater rock mass. Then, the first and second synchronous motors stop working and the multiple support rods 303 fix the support assembly in the specified area of ​​the rock mass.

[0045] Step 4: With the drill rod 100 in a follow-up state, the position of the drill bit 101 is adjusted within a small range by extending and retracting the four hydraulic telescopic rods. After the drill bit 101 is precisely aligned with the designated position, the first motor and hydraulic cylinder are turned on, and the drill bit 101 is used to complete the underwater rock drilling work. After the drilling is completed, the position of the drill bit 101 is adjusted within a small range again by extending and retracting the four hydraulic telescopic rods to complete multiple small-range drilling operations.

[0046] In this technical solution, when all four telescopic components are fully extended, the rectangular frame covers the largest area, enabling drilling over a wider range. When drilling only along a straight line is required, only two parallel telescopic components can be extended while the other two retract. The drill bit 101 is then moved along a straight line via two opposing hydraulic telescopic rods, completing the drilling operation sequentially. When the drilling device is submerged in water, the drill rod 100 is fixed. The extension and retraction of the four hydraulic telescopic rods adjusts the area covered by the rectangular frame, defining the drilling range. Multiple support rods 303 are then driven into the rock mass to secure the support components. Subsequently, the drill rod 100 is in a follow-up state, and the position of the drill bit 101 is adjusted using the four hydraulic telescopic rods to precisely locate the drilling position. After completing one drilling operation, the drill bit 101 can be lifted, and its position adjusted again using the four hydraulic telescopic rods for the next drilling operation. This ensures precise drilling positioning and improves drilling efficiency.

[0047] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0048] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An underwater rock drilling device, characterized in that, include: A drilling assembly includes a drill rod and a drill bit. A hydraulic cylinder is installed at the bottom of the drill bit, and the drill bit is coaxially mounted at the bottom of the hydraulic cylinder. The side wall of the drill rod has multiple grooves along the axial direction, and a screw is installed in each groove. The multiple screws are all connected to a first synchronous motor. The height adjustment assembly includes a sleeve fitted around the outer periphery of the drill rod. The inner sidewall of the sleeve is provided with a plurality of protruding ribs along the axial direction. Each protruding rib is provided with a threaded hole along the axial direction. The plurality of protruding ribs are matched and accommodated in a plurality of grooves, and the screw is rotated and inserted into the corresponding threaded hole. The support assembly includes a rectangular frame formed by four telescopic members connected end to end, the rectangular frame surrounding the outer periphery of the sleeve. Each telescopic member consists of a sleeve rod and two insert rods, wherein the two insert rods are symmetrically slidably inserted into the sleeve rod from both ends. The two ends of the sleeve rod are provided with annular protrusions extending inward perpendicular to the side wall. The ends of the two insert rods that are close to each other are provided with limiting edges extending outward perpendicular to the side wall. The side walls of the four sleeve rods are all hinged to the side wall of the sleeve, and the bottom of each sleeve rod is provided with a support rod. The four telescopic components are a first telescopic component, a third telescopic component, a second telescopic component, and a fourth telescopic component that are parallel to each other. The second and fourth telescopic components are located between the first and third telescopic components. The ends of the two inserts of the second telescopic component that are far apart from each other are perpendicularly fixed to the end sidewalls of the inserts of the first and third telescopic components that are on the same side. The ends of the two inserts of the fourth telescopic component that are far apart from each other are perpendicularly fixed to the end sidewalls of the inserts of the first and third telescopic components that are on the same side. The rectangular frame can adjust its area by extending and retracting four telescopic rods, thereby determining the range of movement of the drill bit. The drill bit can successively complete multiple drilling tasks within the area enclosed by the rectangular frame.

2. The underwater rock drilling device as described in claim 1, characterized in that, The outer wall of the drill bit is provided with a first helical blade. The drill bit is rotatably connected to a hydraulic cylinder and is connected to a first motor to drive its rotation.

3. The underwater rock drilling device as described in claim 1, characterized in that, All four telescopic rods are hydraulic telescopic rods.

4. The underwater rock drilling device as described in claim 1, characterized in that, Each support rod is rotatably connected to the bottom of the sleeve rod, and multiple support rods are connected to a second synchronous motor to drive their synchronous rotation.

5. The underwater rock drilling device as described in claim 4, characterized in that, Each support rod has a second helical blade on its outer side wall.

6. The underwater rock drilling device as described in claim 1, characterized in that, Each insert has a groove along its side wall and multiple sliders corresponding to the grooves along its inner side wall. Each slider is accommodated in the groove and multiple balls are provided at the end of each slider near the inner wall of the groove.

7. A drilling method based on the underwater rock drilling apparatus as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Lower the drilling assembly, along with the height adjustment assembly and the support assembly, to the underwater drilling position. Step 2: With the drill rod in a fixed position, the four hydraulic telescopic rods extend, expanding the perimeter of the rectangular frame; Step 3: Start the first synchronous motor to drive multiple screws to rotate, so that the sleeve and support assembly slide down the drill rod to the specified height. Start the second synchronous motor to drive multiple support rods to drill small holes in the underwater rock mass. Then, the first and second synchronous motors stop working, and the multiple support rods fix the support assembly in the specified area of ​​the rock mass. Step 4: With the drill rod in a follow-up state, the position of the drill bit is adjusted within a small range by extending and retracting the four hydraulic telescopic rods. Once the drill bit is precisely aligned with the designated position, the first motor and hydraulic cylinder are turned on, and the drill bit is used to complete the underwater rock drilling work. After the drilling is completed, the position of the drill bit is adjusted within a small range again by extending and retracting the four hydraulic telescopic rods to complete multiple small-range drilling operations.

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