Perforating device for house building construction

Abstract

The utility model discloses a punching device for house building construction. The punching device comprises a power assembly, a positioning assembly, a fixing assembly and a drill rod. The fixed end of the drill rod is detachably connected with the fixing assembly, the fixing assembly is used for clamping and fixing the fixed end of the drill rod, and the fixing assembly is further fixed to the power output end of the power assembly so as to drive the drill rod to rotate. The power assembly is detachably arranged on the positioning assembly, the positioning assembly is used for abutting against a to-be-punched face to be punched for positioning, and meanwhile the positioning assembly is further used for guiding and limiting the power assembly in the punching pushing direction so that the drill rod can vertically drill the to-be-punched face. According to the device, it can be ensured that the drill rod is always kept in the state of being perpendicular to the face to be punched in the punching process, the problem that punching is inaccurate due to the fact that the drill rod deviates or inclines in the drilling and beating process is solved, meanwhile, the drill rod is detachably connected with the fixing assembly so that the drill rod can be rapidly disassembled and replaced, then the downtime is shortened, and the production efficiency is improved. And the overall construction efficiency and the construction flexibility are improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular, to a drilling device for building construction. Background Technology

[0002] Building construction includes stages such as construction preparation, foundation construction, main structure construction, decoration and finishing, equipment installation, and final acceptance. Among these, drilling is a key step, as it is involved in the installation of equipment, maintenance and renovation, and pipeline laying.

[0003] Chinese Patent Publication No. CN108480714A discloses a drilling device for construction, including a front seat of a drilling machine. A mounting plate is fixedly connected to one side of the front seat, a drill rod is fixedly connected to one side of the mounting plate, and a front handle is fixedly connected to the bottom of the mounting plate. A shock-absorbing layer is fixedly connected to the side of the front seat away from the mounting plate, a buffer device is fixedly connected to one side of the shock-absorbing layer, a rebound layer is fixedly connected to the other side of the buffer device, and a rear seat of the drilling machine is fixedly connected to one side of the rebound layer. This drilling device solves the problems of poor shock absorption and ineffective protection of drilling machines currently used in decoration.

[0004] However, although the drilling equipment mentioned in the above literature can drill holes during construction, it cannot assist in drilling vertically with the drill rod, nor can it replace the drill rod online, thus affecting the drilling quality and efficiency and limiting the flexibility of construction. Utility Model Content

[0005] This utility model provides a drilling device for building construction, which solves the technical problems of existing drilling devices that cannot assist in vertical drilling of the drill rod and cannot replace the drill rod online, thus affecting the drilling quality and efficiency and limiting the flexibility of construction.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A drilling device for building construction includes: a power component, a positioning component, a fixing component, and a drill rod; the fixed end of the drill rod is detachably connected to the fixing component, which clamps and fixes the fixed end of the drill rod. The fixing component is also fixed to the power output end of the power component to drive the drill rod to rotate; the power component is detachably mounted on the positioning component, which is used to position itself against the surface to be drilled. The positioning component also guides and limits the power component along the drilling direction so that the drill rod drills perpendicularly to the surface to be drilled.

[0008] Furthermore, the power assembly includes a connecting cylinder, a motor axially mounted inside the connecting cylinder, and a handheld component for human hand gripping; the connecting cylinder is detachably connected to the positioning component; the first end of the motor is located inside the connecting cylinder, and the power output shaft of its first end extends out of the connecting cylinder and is fixedly connected to the fixing component, and the second end of the motor extends out of the connecting cylinder and is connected to the handheld component.

[0009] Furthermore, the connecting cylinder is hollow and cylindrical. Its first end has a connecting flange that protrudes from the end face toward the center, and the second end of the connecting cylinder has an end plate for closing the end face. The connecting cylinder is fitted onto the motor from the first end of the motor and is clamped to the shaft shoulder limit provided on the motor housing by the connecting flange. The outer circle of the second end of the connecting cylinder is also provided with a first external thread, and the power output shaft of the motor passes through the end plate and is fixedly connected to the fixing assembly.

[0010] Furthermore, the positioning component includes a mounting frame and a sliding plate; the mounting frame is used to position itself against the surface to be drilled, the sliding plate is disposed inside the mounting frame, and guide rail slider structures are provided at multiple contact points between the sliding plate and the mounting frame to limit and guide the sliding of the sliding plate within the mounting frame; a through hole is provided on the sliding plate, and a first internal thread is provided on the inner wall of the through hole to match the first external thread provided on the outer wall of the connecting cylinder for detachable connection with the connecting cylinder.

[0011] Furthermore, the positioning component also includes multiple sets of elastic buffer components for vibration damping. The multiple sets of elastic buffer components are arranged sequentially and spaced apart along the circumference of the sliding plate, and each elastic buffer component includes: a slide rod arranged along the sliding direction of the sliding plate and fixedly connected to the mounting frame at both ends, and a buffer spring fitted on the outer circle of the slide rod; the sliding plate slides through multiple slide rods at the same time, and the two ends of the buffer spring are fixedly connected to the mounting frame and the sliding plate respectively.

[0012] Furthermore, the fixing assembly includes a mounting drive cylinder assembly and a clamping cylinder for clamping the drill pipe; the first end of the clamping cylinder is slidably mounted in the mounting drive cylinder assembly along the axial direction, and the second end of the clamping cylinder extends out of the mounting drive cylinder assembly; the mounting drive cylinder assembly is used to push the clamping cylinder further into the assembly under the action of external force, and the clamping cylinder is used to gradually tighten inward to clamp the drill pipe mounted therein during the inward movement, or the mounting drive cylinder assembly is used to push the clamping cylinder gradually outward under the action of external force, and the clamping cylinder is used to gradually release the clamped drill pipe during the outward movement.

[0013] Furthermore, the clamping cylinder includes a hollow annular mounting ring and multiple elastic expansion plates; the multiple elastic expansion plates are arranged sequentially at intervals along the circumference of the mounting ring, and the first end of each elastic expansion plate is fixed to the inner end of the mounting ring, while the second end of each elastic expansion plate extends along the axial direction and gradually expands outward, so that as the clamping cylinder gradually extends into the mounting drive cylinder assembly, the second ends of the multiple elastic expansion plates gradually retract inward to clamp the drill rod located therein.

[0014] Furthermore, the mounting drive cylinder assembly includes a mounting cylinder, a drive cylinder axially threaded to the mounting cylinder, and a drive spring for driving the clamping cylinder to slide outward; the first end of the mounting cylinder is fixed to the power output shaft of the motor; the first end of the clamping cylinder is inserted into the mounting cylinder from the second end of the mounting cylinder, and the drive spring is arranged between the mounting ring and the inner side of the first end of the mounting cylinder; the drive cylinder is located outside the second end of the clamping cylinder and is threadedly connected to the second end of the mounting cylinder, so as to drive the clamping cylinder to gradually penetrate deeper into the mounting cylinder during the tightening process.

[0015] Furthermore, the mounting cylinder includes a hollow cylindrical mounting body and a fixing ring fixed on the outer circle of the mounting cylinder. A second external thread is machined on the outer circle of the second end of the mounting body. The driving cylinder includes a hollow cylindrical driving body and a stop flange protruding from the second end of the driving body toward the center. A second internal thread that is threadedly connected to the second external thread is provided on the inner circumferential surface of the driving body. The stop flange is used to abut against the stop step at the second end of the elastic expansion piece.

[0016] Furthermore, the elastic expansion piece includes a connecting part, a top abutment part, and a clamping part arranged sequentially along the axial direction; the end face of the connecting part is fixed to the mounting ring; the outer wall surface of the top abutment part gradually slopes outward in the direction of the clamping part to form an action slope, which is used to abut against the inner wall surface of the second end of the mounting cylinder to force the elastic expansion piece to retract inward during the insertion of the clamping cylinder; the clamping part is used to clamp the mounting end of the drill pipe, and the outer diameter of the clamping part is smaller than the outer diameter of the top abutment part so that a stop step is formed at the connection between the two.

[0017] This utility model has the following beneficial effects:

[0018] This invention relates to a drilling device that, through the inclusion of a positioning component, serves two purposes: firstly, the positioning component positions the drill rod against the surface to be drilled; secondly, it supports the power component and guides and limits the power component along the drilling direction, thus assisting the drill rod in drilling vertically. This ensures that the drill rod remains perpendicular to the surface during drilling, preventing inaccurate drilling caused by drill rod deviation or tilting, reducing material waste, improving construction efficiency, and ensuring project quality and progress. Furthermore, the device incorporates a fixing component to clamp and fix the drill rod, preventing it from loosening or falling off during drilling. This avoids construction accidents caused by drill rod instability and allows for detachable connection between the drill rod and the fixing component, enabling quick disassembly, replacement, and installation. This reduces downtime and improves overall construction efficiency and flexibility, eliminating the need for extensive disassembly and installation by construction personnel.

[0019] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the spatial structure of a drilling device for building construction according to a preferred embodiment of this utility model;

[0022] Figure 2 yes Figure 1 A partial cross-sectional view of the power assembly.

[0023] Figure 3 yes Figure 1 A schematic diagram of the spatial structure of the positioning component;

[0024] Figure 4 yes Figure 1 A partial cross-sectional view of the fixed component;

[0025] Figure 5 yes Figure 4 A schematic diagram of the spatial structure of the middle clamping cylinder.

[0026] Legend:

[0027] 1. Power assembly; 11. Connecting cylinder; 111. Connecting flange; 112. End plate; 113. First external thread; 12. Motor; 13. Handheld component;

[0028] 2. Positioning component; 21. Mounting frame; 22. Sliding plate; 221. First internal thread; 23. Slide rod; 24. Buffer spring;

[0029] 3. Fixing components;

[0030] 31. Mounting cylinder; 311. Retaining ring;

[0031] 32. Drive cylinder; 321. Stop flange;

[0032] 33. Clamping cylinder; 331. Mounting ring; 332. Elastic expansion plate; 3321. Connecting part; 3323. Clamping part; 3324. Acting inclined surface; 3325. Stop step;

[0033] 34. Drive spring;

[0034] 4. Drill pipe. Detailed Implementation

[0035] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0036] Reference Figure 1 A preferred embodiment of this utility model provides a drilling device for building construction, comprising: a power component 1, a positioning component 2, a fixing component 3, and a drill rod 4. The fixing end of the drill rod 4 is detachably connected to the fixing component 3, which clamps and fixes the fixing end of the drill rod 4. The fixing component 3 is also fixed to the power output end of the power component 1 to drive the drill rod 4 to rotate. The power component 1 is detachably mounted on the positioning component 2, which is used to position itself against the surface to be drilled. The positioning component 2 also guides and limits the power component 1 along the drilling direction, ensuring that the drill rod 4 drills perpendicularly to the surface to be drilled.

[0037] The drilling device of this utility model, by setting a positioning component 2, serves two purposes: firstly, it positions the drill rod against the surface to be drilled; secondly, it supports the power component 1 and guides and limits the power component 1 along the drilling direction, thus assisting the drill rod 4 in drilling vertically. This ensures that the drill rod 4 remains perpendicular to the surface to be drilled throughout the drilling process, thereby avoiding inaccurate drilling caused by the drill rod 4 shifting or tilting during drilling, reducing material waste, improving construction efficiency, and ensuring project quality and progress. Furthermore, the drilling device of this utility model also includes a fixing component 3, which clamps and fixes the drill rod 4 to prevent it from loosening or falling off during drilling, thus avoiding construction accidents caused by the instability of the drill rod 4. The drill rod 4 is also detachably connected to the fixing component 3, allowing for quick disassembly, replacement, and installation of the drill rod 4, reducing downtime and improving overall construction efficiency and flexibility.

[0038] Optionally, such as Figure 2 As shown, the power assembly 1 includes a connecting cylinder 11, a motor 12 axially mounted within the connecting cylinder 11, and a handheld component 13 for gripping. The connecting cylinder 11 is detachably connected to the positioning assembly 2. The first end of the motor 12 is located inside the connecting cylinder 11, and its power output shaft extends out of the connecting cylinder 11 and is fixedly connected to the fixing assembly 3. The second end of the motor 12 extends out of the connecting cylinder 11 and is connected to the handheld component 13. In this optional embodiment, by adding the connecting cylinder 11, the motor 12 is detachably connected to the positioning assembly 2, thus avoiding direct connection between the motor 12 and the positioning assembly 2.

[0039] Preferably, such as Figure 2As shown, the connecting cylinder 11 is a hollow cylinder with a connecting flange 111 protruding from the end face towards the center at its first end, and an end plate 112 for closing the end face at its second end. The connecting cylinder 11 is fitted onto the motor 12 from its first end, and is secured to the shaft shoulder on the motor 12 housing by the connecting flange 111. A first external thread 113 is also provided on the outer circumference of the second end of the connecting cylinder 11. The power output shaft of the motor 12 passes through the end plate 112 and is fixedly connected to the fixing assembly 3. In this preferred embodiment, this structure of the connecting cylinder 11 allows for quick installation onto and removal from the motor 12. The first external thread 113 on the outer circumference of the connecting cylinder 11 also allows for quick connection and disassembly with the positioning assembly 2, thereby improving construction efficiency.

[0040] Optionally, such as Figure 1 and Figure 3 As shown, the positioning component 2 includes a mounting frame 21 and a sliding plate 22. The mounting frame 21 is used for positioning against the surface to be drilled. The sliding plate 22 is disposed inside the mounting frame 21, and guide rail slider structures are provided at multiple contact points between the sliding plate 22 and the mounting frame 21 to limit and guide the sliding of the sliding plate 22 within the mounting frame 21. A through hole is provided on the sliding plate 22, and a first internal thread 221 is provided on the inner wall of the through hole to match the first external thread 113 provided on the outer wall of the connecting cylinder 11 for detachable connection with the connecting cylinder 11. During operation, first rotate the positioning component 2 to connect the sliding plate 22 and the connecting cylinder 11 by thread. Then start the motor 12 to drive the fixing component 3 to rotate, which in turn drives the drill rod 4 to rotate. The operator places the side of the mounting frame 21 against the surface to be drilled, holds the handheld part 13, and pushes the connecting cylinder 11 toward the surface to be drilled. This pushes the sliding plate 22 to slide horizontally in the mounting frame 21. The sliding plate 22 is connected to the guide rail slider structure of the mounting frame 21, which limits and guides the sliding of the sliding plate 22. Continue to push the sliding plate 22 until the drill rod 4 contacts the surface to be drilled and drilling begins.

[0041] Preferably, such as Figure 3As shown, the positioning component 2 also includes multiple sets of elastic buffer components for vibration damping. These multiple sets of elastic buffer components are arranged sequentially and at intervals along the circumference of the sliding plate 22. Each elastic buffer component includes: a slide rod 23 arranged along the sliding direction of the sliding plate 22 and fixedly connected to the mounting frame 21 at both ends; and a buffer spring 24 fitted onto the outer circumference of the slide rod 23. The sliding plate 22 simultaneously slides through multiple slide rods 23, and the two ends of the buffer spring 24 are fixedly connected to the mounting frame 21 and the sliding plate 22, respectively. In this preferred embodiment, the slide rods 23 further guide and limit the sliding of the sliding plate 22, ensuring that the sliding plate 22 can only advance in a direction perpendicular to the surface to be drilled, thereby driving the power component 1, the fixing component 3, and the drill rod to advance synchronously in a direction perpendicular to the surface to be drilled. Furthermore, the buffer spring 24 between the mounting frame 21 and the sliding plate 22 dampens the vibration force transmitted from the drill hole to the sliding plate 22, allowing the sliding plate 22 to advance stably forward.

[0042] Preferably, the side end of the mounting frame 21 that abuts against the surface to be drilled is also provided with an anti-slip layer to prevent the mounting frame 21 from sliding or shifting during the drilling process, thereby ensuring the accuracy and safety of the drilling. Furthermore, the anti-slip layer is generally made of rubber, polyurethane, anti-slip coating, etc.

[0043] Optionally, such as Figure 4 As shown, the fixing assembly 3 includes a mounting drive cylinder assembly and a clamping cylinder 33 for clamping the drill pipe 4. The first end of the clamping cylinder 33 is axially slidably mounted within the mounting drive cylinder assembly, and the second end of the clamping cylinder 33 extends out of the mounting drive cylinder assembly. The mounting drive cylinder assembly is used to push the clamping cylinder 33 further into the assembly under external force, and the clamping cylinder 33 is used to gradually tighten inward during the deepening movement to clamp the drill pipe 4 mounted therein; or the mounting drive cylinder assembly is used to push the clamping cylinder 33 outward gradually under external force, and the clamping cylinder 33 is used to gradually release the clamped drill pipe 4 during the withdrawal process.

[0044] In this optional solution, such as Figure 5 As shown, the clamping cylinder 33 includes a hollow annular mounting ring 331 and multiple elastic expansion plates 332. The multiple elastic expansion plates 332 are arranged sequentially at intervals along the circumference of the mounting ring 331, and the first end of each elastic expansion plate 332 is fixed to the inner end of the mounting ring 331. The second end of each elastic expansion plate 332 extends along the axial direction and gradually expands outward, so that as the clamping cylinder 33 gradually extends into the mounting drive cylinder assembly, the second ends of the multiple elastic expansion plates 332 gradually retract inward to clamp the drill rod 4 located therein.

[0045] In this optional solution, such as Figure 4As shown, the mounting drive cylinder assembly includes a mounting cylinder 31, a drive cylinder 32 threadedly connected to the mounting cylinder 31 along its axial direction, and a drive spring 34 for driving the clamping cylinder 33 to slide outward. The first end of the mounting cylinder 31 is fixed to the power output shaft of the motor 12. The first end of the clamping cylinder 33 is inserted into the mounting cylinder 31 from the second end of the mounting cylinder 31, and the drive spring 34 is arranged between the mounting ring 331 and the inner surface of the first end of the mounting cylinder 31. The drive cylinder 32 is located outside the second end of the clamping cylinder 33 and is threadedly connected to the second end of the mounting cylinder 31, so as to drive the clamping cylinder 33 to gradually penetrate deeper into the mounting cylinder 31 during the tightening process.

[0046] Furthermore, such as Figure 4 As shown, the mounting cylinder 31 includes a hollow cylindrical mounting body and a fixing ring 311 fixed to the outer circle of the mounting cylinder. A second external thread is machined on the outer circle of the second end of the mounting cylinder. The driving cylinder 32 includes a hollow cylindrical driving body and a stop flange 321 protruding from the second end of the driving body toward the center. A second internal thread is provided on the inner circumferential surface of the driving body, which is threaded to the second external thread. The stop flange 321 is used to abut against the stop step 3325 at the second end of the elastic expansion piece 332.

[0047] In this embodiment, when the drill rod 4 needs to be replaced, the drive cylinder 32 is first rotated to move it away from the mounting cylinder 31. Under the push of the drive spring 34, the mounting ring 331 and the elastic expansion plate 332 are pushed outwards away from the mounting cylinder 31. The multiple elastic expansion plates 332 expand outwards under their own elastic force, thereby loosening the clamped drill rod 4 so that it can be taken out of the clamping cylinder 33. The new drill rod 4 is then placed between the multiple elastic expansion plates 332. Then the drive cylinder 32 is rotated in the opposite direction to move it closer to the mounting cylinder 31. The stop flange 321 abuts against the end of the elastic expansion plate 332 to push the clamping cylinder 33 to move deeper into the mounting cylinder 31. During the movement of the clamping cylinder 33, the multiple elastic expansion plates 332 are contracted towards the drill rod 4 by the action of the mounting cylinder 31 to clamp and fix the drill rod 4.

[0048] In specific embodiments of this optional solution, such as Figure 4 and Figure 5As shown, the elastic expansion piece 332 includes a connecting portion 3321, a top abutment portion, and a clamping portion 3323 arranged sequentially along the axial direction. The end face of the connecting portion 3321 is fixed to the mounting ring 331. The outer wall surface of the top abutment portion gradually slopes outward in the direction towards the clamping portion 3323 to form an action slope 3324. The action slope 3324 is used to abut against the inner wall surface of the second end of the mounting cylinder 31, so as to force the elastic expansion piece 332 to retract inward during the process of the clamping cylinder 33 penetrating deeper. The clamping portion 3323 is used to clamp the mounting end of the drill rod 4, and the outer diameter of the clamping portion 3323 is smaller than the outer diameter of the top abutment portion, so that a stop step 3325 is formed at the connection between the two. In this specific embodiment, due to the setting of the action slope 3324, when the clamping cylinder 33 moves in the direction of penetrating deeper into the mounting cylinder 31, the elastic expansion piece 332 is forced to gradually retract inward to clamp the drill rod 4 through the cooperation of the mounting cylinder 31 and the action slope 3324.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drilling device for building construction, characterized in that, include: The power assembly (1), the positioning assembly (2), the fixing assembly (3), and the drill pipe (4) are included. The fixed end of the drill rod (4) is detachably connected to the fixing component (3). The fixing component (3) is used to clamp and fix the fixed end of the drill rod (4). The fixing component (3) is also fixed to the power output end of the power component (1) to drive the drill rod (4) to rotate. The power assembly (1) is detachably mounted on the positioning assembly (2). The positioning assembly (2) is used to position itself against the surface to be drilled. At the same time, the positioning assembly (2) is also used to guide and limit the power assembly (1) along the drilling direction so that the drill rod (4) drills the surface to be drilled vertically.

2. The drilling device for building construction according to claim 1, characterized in that, The power assembly (1) includes a connecting cylinder (11), a motor (12) installed axially inside the connecting cylinder (11), and a handheld part (13) for human hand gripping; The connecting cylinder (11) and the positioning component (2) are detachably connected; The first end of the motor (12) is located inside the connecting cylinder (11), and the power output shaft of its first end passes through the connecting cylinder (11) and is fixedly connected to the fixing assembly (3). The second end of the motor (12) extends out of the connecting cylinder (11) and is connected to the hand-held piece (13).

3. The drilling device for building construction according to claim 2, characterized in that, The connecting cylinder (11) is hollow and has a connecting flange (111) at its first end, which protrudes from the end face toward the center. The connecting cylinder (11) has an end plate (112) for closing the end face at its second end. The connecting cylinder (11) is fitted onto the motor (12) from the first end of the motor (12) and is clamped to the shaft shoulder limit provided on the housing of the motor (12) by the connecting flange (111); The outer circle of the second end of the connecting cylinder (11) is also provided with a first external thread (113), and the power output shaft of the motor (12) passes through the end plate (112) and is fixedly connected to the fixing assembly (3).

4. The drilling device for building construction according to claim 2, characterized in that, The positioning component (2) includes a mounting frame (21) and a sliding plate (22); The mounting frame (21) is used to position the sliding plate (22) against the surface to be drilled. The sliding plate (22) is set inside the mounting frame (21), and the sliding plate (22) and the mounting frame (21) are provided with guide rail slider structures at multiple contact points to limit and guide the sliding of the sliding plate (22) inside the mounting frame (21). The sliding plate (22) has a through hole that penetrates the plate surface. The inner wall of the through hole has a first internal thread to match the first external thread (113) on the outer wall of the connecting cylinder (11) so as to detachably connect with the connecting cylinder (11).

5. The drilling device for building construction according to claim 4, characterized in that, The positioning component (2) also includes multiple sets of elastic buffer members for vibration damping. The multiple sets of elastic buffer members are arranged sequentially at intervals along the circumference of the sliding plate (22), and each elastic buffer member includes: A slide rod (23) is provided along the sliding direction of the sliding plate (22) and fixedly connected to the mounting frame (21) at both ends, and a buffer spring (24) is fitted on the outer circle of the slide rod (23); The sliding plate (22) slides through multiple sliding rods (23) at the same time, and the two ends of the buffer spring (24) are fixedly connected to the mounting frame (21) and the sliding plate (22) respectively.

6. The drilling device for building construction according to claim 2, characterized in that, The fixing assembly (3) includes a mounting drive cylinder assembly and a clamping cylinder (33) for clamping the drill pipe (4); The first end of the clamping cylinder (33) is slidably mounted in the mounting drive cylinder assembly along the axial direction, and the second end of the clamping cylinder (33) extends out of the mounting drive cylinder assembly; The drive cylinder assembly is installed to push the clamping cylinder (33) further into the interior under the action of external force. The clamping cylinder (33) is used to gradually tighten inward during the inward movement to clamp the drill rod (4) installed therein. Alternatively, the drive cylinder assembly is installed to push the clamping cylinder (33) outward gradually under the action of external force. The clamping cylinder (33) is used to gradually release the clamped drill rod (4) during the withdrawal process.

7. The drilling device for building construction according to claim 6, characterized in that, The clamping cylinder (33) includes a hollow annular mounting ring (331) and multiple elastic expansion plates (332); Multiple elastic expansion plates (332) are arranged sequentially at intervals along the circumference of the mounting ring (331), and the first end of each elastic expansion plate (332) is fixed to the inner end of the mounting ring (331). The second end of each elastic expansion plate (332) extends along the axial direction and gradually expands outward, so that as the clamping cylinder (33) gradually extends into the mounting drive cylinder assembly, the second ends of the multiple elastic expansion plates (332) gradually retract inward to clamp the drill rod (4) located therein.

8. The drilling device for building construction according to claim 7, characterized in that, The mounting drive cylinder assembly includes a mounting cylinder (31), a drive cylinder (32) that is threadedly connected to the mounting cylinder (31) along the axial direction, and a drive spring (34) for driving the clamping cylinder (33) to slide outward; The first end of the mounting cylinder (31) is fixed to the power output shaft of the motor (12); The first end of the clamping cylinder (33) is inserted into the mounting cylinder (31) from the second end of the mounting cylinder (31), and the driving spring (34) is arranged between the mounting ring (331) and the inner side of the first end of the mounting cylinder (31); The drive cylinder (32) is located outside the second end of the clamping cylinder (33) and is threadedly connected to the second end of the mounting cylinder (31) so as to drive the clamping cylinder (33) to gradually penetrate into the mounting cylinder (31) during the tightening process.

9. The drilling device for building construction according to claim 8, characterized in that, The mounting cylinder (31) includes a hollow cylindrical mounting cylinder body and a fixing ring (311) fixed on the outer circle of the mounting cylinder body. A second external thread is machined on the outer circle of the second end of the mounting cylinder body. The drive cylinder (32) includes a hollow cylindrical drive cylinder body and a stop flange (321) formed by the second end of the drive cylinder body protruding toward the center. The inner circumferential surface of the drive cylinder body is provided with a second internal thread that is threadedly connected to the second external thread. The stop flange (321) is used to abut against the stop step (3325) at the second end of the elastic expansion piece (332).

10. The drilling device for building construction according to claim 9, characterized in that, The elastic expansion piece (332) includes a connecting part (3321), a top abutting part, and a clamping part (3323) arranged sequentially along the axial direction; The end face of the connecting part (3321) is fixed to the mounting ring (331); The outer wall surface of the top abutment gradually slopes outward in the direction of the clamping part (3323) to form an action slope (3324). The action slope (3324) is used to abut against the inner wall surface of the second end of the mounting cylinder (31) so as to force the elastic expansion piece (332) to retract inward during the process of the clamping cylinder (33) going deeper. The clamping part (3323) is used to clamp the mounting end of the drill rod (4), and the outer diameter of the clamping part (3323) is smaller than the outer diameter of the top abutment part so that a stop step (3325) is formed at the connection between the two.

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