A concrete precast wall panel drilling device

Abstract

The application relates to the technical field of prefabricated concrete wallboard processing, and discloses a concrete prefabricated wallboard drilling device, which comprises a supporting table, the side of the supporting table close to the ground is provided with supporting legs, the side of the supporting table far from the ground is slidably connected with a sliding seat, the end of the sliding seat far from the supporting table is provided with a C-shaped mounting bracket, the opening of the C-shaped mounting bracket faces the central area of the supporting table, and the drilling device further comprises a drilling mechanism and a lifting mechanism; the lifting mechanism is arranged at the middle part of the supporting table, is used for horizontally supporting and fixing the prefabricated wallboard, and can drive the prefabricated wallboard to rotate around the center of the supporting table; the drilling mechanism is arranged at the end of the C-shaped mounting bracket close to the center of the supporting table, and is used for drilling the prefabricated wallboard fixed by the lifting mechanism. The prefabricated wallboard is stably clamped and rotated through the adjustable lifting mechanism, and accurate positioning and drilling are realized in combination with the sliding drilling mechanism.

Description

Technical Field

[0001] This invention relates to the field of precast concrete wall panel processing technology, specifically a drilling device for precast concrete wall panels. Background Technology

[0002] Precast concrete wall panels, as core components of prefabricated buildings, have gained widespread application in modern construction due to their significant advantages such as uniform quality, high construction efficiency, energy conservation, and environmental protection brought about by factory production. These components are typically pre-embedded in the factory, including pre-drilled holes, to ensure precise alignment with the main structure during assembly. However, the complexity of construction practice dictates that not all drilling operations can be completed in a factory environment. On construction sites, situations frequently arise where post-drilling must be performed on already-installed wall panels due to design changes, pipeline adjustments, or specific installation requirements. This on-site processing step constitutes a significant technical bottleneck in the current construction process.

[0003] Currently, on-site drilling operations for precast concrete wall panels generally rely on handheld drilling equipment operated by construction workers. Precast wall panels are large and heavy, making it difficult to stably lift and fix them at a suitable operating height and position on the construction site. Construction workers often need to temporarily erect simple scaffolds or work platforms for support. This not only involves cumbersome preparation and consumes valuable construction time, but also, due to the lack of effective dedicated clamping and positioning devices, the wall panels are prone to displacement or vibration during drilling, seriously affecting the initial positioning accuracy and the final hole quality. Secondly, existing technology lacks a dedicated device that can adapt to construction site conditions and conveniently and stably clamp and accurately drill large precast wall panels. This has become a prominent problem restricting further improvements in the efficiency and quality of prefabricated building construction. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling device for precast concrete wall panels to solve the technical problem of poor drilling accuracy at construction sites in the prior art.

[0005] A drilling device for precast concrete wall panels includes a support platform, with legs on the side of the support platform closest to the ground and a sliding seat slidably connected to the side of the support platform away from the ground. A C-shaped mounting bracket is provided at the end of the sliding seat away from the support platform, with the opening of the C-shaped mounting bracket facing the center area of ​​the support platform. The device also includes a drilling mechanism and a lifting mechanism. The lifting mechanism, located in the middle of the support platform, is used to horizontally support and fix the precast wall panel, and can drive the precast wall panel to rotate around the center of the support platform. The drilling mechanism, located at the end of the C-shaped mounting bracket closest to the center of the support platform, is used to perform drilling operations on the precast wall panel fixed by the lifting mechanism.

[0006] As a preferred embodiment of the present invention, the lifting mechanism includes a rotating column vertically rotatably connected to the middle of the support platform. The top of the rotating column is provided with a rotating disk parallel to the support platform. An extended cantilever is provided on the outer edge of the rotating disk. An end stop is provided at the far end of the extended cantilever. A support block is provided on the side of the end stop near the rotating disk, parallel to the rotating disk. The support block is located above the extended cantilever.

[0007] In a preferred embodiment of the present invention, four cantilever arms are symmetrically arranged in pairs on both sides of the rotating disk. Each cantilever arm includes a telescopic sleeve fixedly connected to the rotating disk. A telescopic rod is slidably connected to the side of the telescopic sleeve away from the rotating disk, and the distal end of the telescopic rod is fixedly connected to an end stop. A fixing post is provided on the side of the telescopic sleeve, and multiple limiting holes are evenly distributed on the side of the telescopic rod. A limiting rod is inserted into the limiting hole near the end of the telescopic sleeve, and the limiting rod and the fixing post are respectively connected to the two ends of the tension spring.

[0008] As a preferred embodiment of the present invention, the sliding seat has a U-shaped structure, and the two sides of the sliding seat are slidably connected to the two sides of the support platform, respectively. The C-shaped mounting bracket and the sliding seat are located on the two sides of the rotating disk.

[0009] As a preferred embodiment of the present invention, the drilling mechanism includes an extension block disposed at the end of the C-shaped mounting bracket away from the support platform. Suspension slide rods are slidably connected to both sides of the extension block. A suspension block is disposed at the end of the suspension slide rod near the support platform. A C-shaped placement ring is fixedly connected to the end of the suspension block near the center of the extension block. A drill is mounted on the C-shaped placement ring.

[0010] As a preferred embodiment of the present invention, a lifting slide rod is slidably connected to the end of the C-shaped mounting bracket near the support platform. The axis of the lifting slide rod is collinear with the axis of the C-shaped placement ring. A lifting ring is provided at the end of the lifting slide rod away from the support platform. A synchronous lifting assembly is provided inside the C-shaped mounting bracket. The synchronous lifting assembly is used to drive the suspension slide rod and the lifting slide rod to move in opposite directions.

[0011] As a preferred embodiment of the present invention, the synchronous lifting assembly includes two sliders slidably connected to the side of the C-shaped mounting frame near the support platform. A buffer spring is provided between the two sliders. The side of the slider away from the lifting rod is connected to one end of a first traction rope, and the other end of the first traction rope is connected to the side of the C-shaped placement ring. The inner side of the C-shaped mounting frame is provided with a guide wheel that cooperates with the first traction rope. The side of the slider near the lifting rod is connected to one end of a second traction rope, and the other end of the second traction rope is connected to the end of the C-shaped mounting frame. The end of the lifting rod near the support platform is provided with an arc-shaped head that cooperates with the second traction rope.

[0012] As a preferred embodiment of the present invention, the top of the support leg is rotatably connected to the support platform via a rotating seat, and a limiting block is provided at the bottom of the support platform. When the support leg rotates to the point where its side is in contact with the limiting block, the support leg is in an outward tilting state.

[0013] As a preferred embodiment of the present invention, the end of the end block is provided with a support wheel, the rim of the support wheel is higher than the top surface of the end block, the side of the support platform is threaded with a limiting screw, the limiting screw and the support wheel are located on the same side of the support platform, and the end of the limiting screw is provided with a top head that cooperates with the support leg.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects:

[0015] 1. High precision and high quality: The precast wall panel is stably clamped on the horizontal support platform by a rigid lifting mechanism, and combined with a synchronous lifting component that can automatically provide reverse top support force, the vibration and deformation during the drilling process are effectively suppressed, the exit cracking problem is fundamentally avoided, and the accuracy of the hole and the integrity of the precast wall panel are ensured.

[0016] 2. High efficiency and low cost: The rotatable design of the precast wall panels and the lateral movement of the drilling tool enable rapid and labor-saving positioning across the entire area. The unique tilting clamping system transforms the arduous vertical lifting into labor-saving rolling sliding, making it possible for a single person to safely and conveniently operate large precast wall panels, significantly reducing reliance on manpower and auxiliary equipment and improving work efficiency.

[0017] 3. High versatility and cost-effectiveness: The cantilever structure can be adapted to wall panels of different sizes, enhancing its versatility. The C-shaped placement ring design allows the direct use of a regular electric drill as a power source, eliminating the need for customized, expensive special heads, significantly reducing manufacturing costs and lowering the barrier to entry.

[0018] 4. Excellent safety and ergonomics: The stable clamping and ground-based operation eliminate the risks of precast wall panel overturning and working at heights. The entire process significantly reduces the operator's workload, and safety and comfort are comprehensively improved. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a precast concrete wall panel drilling device after the precast wall panel is clamped in place.

[0021] Figure 2 This is a schematic diagram of a drilling device for precast concrete wall panels.

[0022] Figure 3 for Figure 2 The front view.

[0023] Figure 4 This is a schematic diagram of the structure of a C-shaped mounting frame and a support platform in a drilling device for precast concrete wall panels.

[0024] Figure 5 This is a schematic diagram of the C-shaped mounting bracket in a drilling device for precast concrete wall panels.

[0025] Figure 6 for Figure 5 The right view.

[0026] Figure 7 This is a schematic diagram of the lifting mechanism in a drilling device for precast concrete wall panels.

[0027] Figure 8 for Figure 7 A magnified view of part A in the diagram.

[0028] Figure 9 This is a schematic diagram of the structure below the support platform in a drilling device for precast concrete wall panels.

[0029] Figure 10 for Figure 9 A magnified view of part B in the diagram.

[0030] Figure 11 This is a schematic diagram of the structure of a precast concrete wall panel drilling device after it has been retracted.

[0031] Figure 12 This is a schematic diagram of the structure of a precast concrete wall panel drilling device after the support legs are folded under the support platform.

[0032] In the diagram: 1. Support platform; 2. Outrigger; 3. Lifting mechanism; 4. Sliding seat; 5. C-type mounting bracket; 6. Drilling mechanism; 7. Precast wall panel; 8. Lifting slide bar; 9. Lifting ring; 10. Extending block; 11. Suspension slide bar; 12. Suspension block; 13. Drilling tool; 14. C-type placement ring; 15. Synchronous lifting assembly; 16. Guide wheel; 17. First traction rope; 18. Slider; 19. Buffer spring; 20. Arc-shaped head; 21. Second traction rope; 22. Rotary disk; 23. Rotating column; 24. Extending cantilever; 25. End stop; 26. Support block; 27. Tension spring; 28. Fixed column; 29. ​​Telescopic sleeve; 30. Telescopic rod; 31. Limiting rod; 32. Limiting hole; 33. Rotating seat; 34. Limiting block; 35. Limiting screw; 36. Support wheel; 37. Top head. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In one embodiment, see Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 10 , Figure 11 ,and Figure 12 A drilling device for precast concrete wall panels includes a support platform 1, which is a rigid, horizontal platform structure, preferably welded from structural steel to ensure sufficient structural strength and rigidity. At least three legs 2 are circumferentially distributed on the outer side of the lower surface of the support platform 1. These legs 2 are not simply fixed vertically, but are hinged to the lower surface of the support platform 1 via rotating seats 33. This design allows the legs 2 to rotate outwards and unfold, forming a frustum-shaped structure with a larger supporting area, greatly improving the overall stability of the device. To further ensure the fixed posture of the legs 2 after unfolding, limit blocks 34 are fixedly installed on the lower surface of the support platform 1 corresponding to the inner side of each leg 2. When the leg 2 rotates outwards until its side is tightly fitted with the limit block 34, the leg 2 is locked at a preset, outwardly tilted stable angle. At this time, when the device is placed on the ground, the support platform 1 remains horizontal. Furthermore, when the entire support platform 1 is not in use, the legs 2 can be folded down to the lower surface of the support platform 1, minimizing the overall volume of the drilling device.

[0035] The sliding seat 4 and the C-shaped mounting bracket 5 are key to achieving drilling position adjustment. The sliding seat 4 is a U-shaped frame structure, with its two sides slidably connected to the left and right sides of the support platform 1 via linear guide rails, allowing the sliding seat 4 to slide smoothly along the front-back direction of the support platform 1 (i.e., towards or away from the center of the support platform 1). A vertically arranged C-shaped mounting bracket 5 is fixedly installed on the upper surface of the sliding seat 4. The opening of the C-shaped mounting bracket 5 faces the rear center of the support platform 1. By moving the sliding seat 4, the opening area of ​​the C-shaped mounting bracket 5 can cover most of the center area of ​​the support platform 1. The C-shaped mounting bracket 5 and the sliding seat 4 are located on the upper and lower sides of the rotating disk 22, respectively, and also include a drilling mechanism 6 and a lifting mechanism 3.

[0036] The lifting mechanism 3 is one of the core functional modules of the device, responsible for supporting and clamping the precast wall panel 7 and providing rotational freedom. This mechanism is directly installed in the central area of ​​the upper surface of the support platform 1. The drilling mechanism 6 is integrated on the C-shaped mounting bracket 5 and is responsible for performing the final drilling task. Its unique feature is its design that links with the lifting mechanism 3, automatically providing reverse support for the precast wall panel 7 during drilling.

[0037] In one instance of this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 7 ,and Figure 8 The core of the lifting mechanism 3 is a vertically arranged rotating column 23. This rotating column 23 is rotatably connected to the central hole of the support platform 1 via a combination of a large thrust bearing and a radial bearing. To drive the rotating column 23, a driven gear can be installed at its lower part, meshing with a small gear driven by a handwheel or motor (not shown in the figure). Alternatively, the prefabricated wall panel 7 can be manually pushed to rotate the rotating column 23. At the lower end of the rotating column 23, below the support platform 1, a fixed disc is fixedly installed. Multiple rollers are installed around the upper surface of the fixed disc. These rollers contact the lower surface of the support platform 1. When the rotating column 23 is subjected to lateral force from the prefabricated wall panel 7, the fixed disc and rollers form an auxiliary support point, effectively resisting this lateral force, preventing the rotating column 23 from bending or swaying, and ensuring its stable rotation around the vertical axis.

[0038] The upper end of the rotating column 23 extends above the support platform 1 and is fixedly connected to a rotating disk 22 parallel to the support platform 1. The axes of the rotating disk 22, rotating column 23, and support platform 1 are collinear, ensuring coaxiality of the rotational motion. Multiple (preferably four, two on each side) extending cantilever arms 24 are radially symmetrically arranged on the outer edge of the rotating disk 22. Each extending cantilever arm 24 consists of a telescopic sleeve 29 and a telescopic rod 30. The proximal end of the telescopic sleeve 29 is fixedly connected to the outer edge of the rotating disk 22 via a flange and bolts. The distal end of the telescopic sleeve 29 has an open structure, into which the telescopic rod 30 is inserted and can slide along the axial direction of the telescopic sleeve 29, thereby adjusting the total length of the extending cantilever arm 24. An end stop 25 is vertically fixed at the distal end of the telescopic rod 30. A support block 26 is horizontally fixed on the upper part of the end stop 25 near the rotating disk 22. The upper surface of the support block 26 and the inner side of the end stop block 25 together form an approximately right-angled groove, which is used to support and limit the edge of the prefabricated wall panel 7.

[0039] To lock the relative position of the telescopic rod 30 and the telescopic sleeve 29 and adapt to prefabricated wall panels 7 of different sizes, an adjustable limiting device is provided. A fixed post 28 is vertically installed on the upper surface of the telescopic sleeve 29. A series of limiting holes 32 are evenly provided along the side of the telescopic rod 30. A limiting rod 31 can be inserted into any selected limiting hole 32. A tension spring 27, in a normally stretched state, is connected between the limiting rod 31 and the fixed post 28. The tension of the tension spring 27 is used to pull the telescopic rod 30 back. When the prefabricated wall panel 7 is placed on the support block 26, the tension spring 27 causes the telescopic rods 30 on both sides to tend to slide inward. This design allows the device to adapt to prefabricated wall panels 7 within a certain size range, and the preload of the tension spring 27 achieves flexible clamping, avoiding rigid impact damage to the edges of the wall panel.

[0040] In one instance of this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,and Figure 6 The core function of the drilling mechanism 6 is to guide the drilling tool and ensure the stability of the drilling process. It includes an extension block 10 fixed to the rear end of the C-shaped mounting bracket 5. Two vertical suspension rods 11 are slidably connected to the left and right sides of the extension block 10 via linear bearings. The bottom ends of the two suspension rods 11 are fixedly connected to a suspension block 12, and a C-shaped placement ring 14 is fixed to the side of the suspension block 12 facing the center of the device. This C-shaped placement ring 14 is used to hold the drill bit 13 (such as a handheld electric drill). Its C-shaped opening design allows for easy insertion and removal of a universal handheld electric drill, greatly enhancing the versatility and economy of the device, eliminating the need for a customized power head.

[0041] A vertically positioned lifting slide rod 8 is slidably connected to the lower rear end of the C-shaped mounting bracket 5, and a lifting ring 9 is positioned at the upper end of the lifting slide rod 8. Crucially, the axes of the lifting slide rod 8, the lifting ring 9, and the C-shaped placement ring 14 are collinear. To achieve synchronized reverse movement of the drill 13 drilling downwards and the lifting ring 9 rising upwards, a cleverly designed synchronous lifting assembly 15 is installed inside the closed side of the C-shaped mounting bracket 5. This synchronous lifting assembly 15 includes two sliders 18 that can slide along the lower part of the C-shaped mounting bracket 5, with a buffer spring 19 positioned between the two sliders 18. The lower end of the first traction rope 17 is connected to the front side of the slider 18 on the front side. The upper end of the first traction rope 17 is connected to the front side of the C-shaped placement ring 14. Guide wheels 16 are provided inside the C-shaped mounting frame 5. The guide wheels 16 are respectively located on the front and rear sides above the C-shaped mounting frame 5 and on the front side below the C-shaped mounting frame 5. The first traction rope 17 passes through the guide wheels 16, so that the first traction rope 17 can move along the inner wall of the C-shaped mounting frame 5 (these guide wheels 16 are reasonably arranged to change the direction of the rope and reduce friction). The front end of the second traction rope 21 is connected to the lower side of the slider 18 on the rear side. The rear end of the second traction rope 21 is connected to the rear end below the C-shaped mounting frame 5. An arc-shaped head 20 is provided at the lower end of the lifting slide bar 8. The arc-shaped head 20 abuts against the upper surface of the second traction rope 21.

[0042] When the C-shaped placement ring 14 moves downward, it pulls the front slider 18 forward via the first traction rope 17. At this time, the rear slider 18 moves forward with the front slider 18 via the buffer spring 19, which causes the rear slider 18 to pull the lifting slide bar 8 upward via the second traction rope 21, thereby causing the lifting ring 9 to move upward. When the lifting ring 9 stops moving after hitting the lower surface of the precast wall panel 7, the C-shaped placement ring 14 continues to move downward, and the drill 13 drills holes in the precast wall panel 7. At this time, the buffer spring 19 is stretched, so that the lifting ring 9 can continuously press against the precast wall panel 7 until the drilling is completed. After the drill 13 completes the drilling process, the drill 13 is moved upward or removed. At this time, under the action of gravity, the lifting ring 9 and the lifting slide bar 8 move downward. The lifting slide bar 8 pushes the second traction rope 21 downward, causing the rear slider 18 to move backward. At this time, the rear slider 18 pulls the front slider 18 backward through the buffer spring 19. The front slider 18 causes the C-shaped placement ring 14 to move upward through the first traction rope 17. By setting different counterweights, the lifting slide bar 8 can pull the slider 18 backward through the second traction rope 21 under the influence of gravity alone, thereby causing the first traction rope 17 to pull the C-shaped placement ring 14 and the drill 13 upward.

[0043] In this process, the buffer spring 19 plays a crucial role. After the lifting ring 9 first contacts the lower surface of the wall panel and stops moving upward, if the drill 13 continues to descend, the buffer spring 19 will be stretched. On the one hand, it ensures that the first traction rope 17 can still transmit sufficient tension to maintain the close contact between the lifting ring 9 and the wall panel, providing continuous and stable reverse support force; on the other hand, it also prevents the mechanism from jamming due to over-positioning, so that the force of the operator pressing down on the drill 13 can be smoothly converted into drilling feed force.

[0044] In one instance of this embodiment, please refer to Figure 1 , Figure 9 , Figure 10 , Figure 11 ,and Figure 12 To simplify the clamping process of large precast wall panels 7 and enable single-person operation, this invention introduces a sophisticated tilt adjustment system into the support platform 1. Specifically, the limiting block 34 corresponding to the support leg 2 located on the left side (or other preset position) of the support platform 1 is replaced with a limiting screw 35. A top head 37 is provided at the lower end of the limiting screw 35. The height of the top head 37 can be adjusted by the limiting screw 35, which realizes the adjustment of the tilt angle of the leftmost support leg 2. In this state, three support legs 2 are evenly distributed below the support platform 1. When the tilt angle of the left support leg 2 changes, the tilt angle of the entire support platform 1 changes. After the top head 37 moves upward, the entire support platform 1 tilts to the left, and the extended cantilever 24 also tilts to the left. At the same time, a support wheel 36 is installed on the upper end of each of the two end blocks 25 on the left side, and its rim is slightly higher than the top surface of the end block 25.

[0045] During clamping: The operator first rotates the limiting screw 35, forcing the angle between the support leg 2 and the support platform 1 to decrease, thus tilting the entire support platform 1 to the left. At this time, the operator only needs to lift the right end of the precast wall panel 7 and place the right side of the precast wall panel 7 on the support wheel 36; then lift the left side of the precast wall panel 7, and with slight guidance and a gentle push to the right, the lower surface of the precast wall panel 7 can easily roll onto the right-side support block 26 along the support wheel 36, while the left side of the precast wall panel 7 will pass over the support wheel 36 and land on the left-side support block 26, thus achieving the assembly of the precast wall panel 7. The preload of the tension spring 27 will automatically tighten the cantilever, clamping the precast wall panel 7. Finally, rotate the limiting screw 35 in the opposite direction to restore the support platform 1 to a horizontal position, and drilling operations can begin.

[0046] During unloading: the process is reversed. First, adjust the support platform 1 to the left tilt position. The operator lifts the left side of the precast wall panel 7, so that it is detached from the left support block 26 and put back on the support wheel 36. Then, the precast wall panel 7 can be easily unloaded by moving it to the left.

[0047] This system transforms the arduous task of vertical lifting into labor-saving rolling and translation through simple tilting transformation, significantly reducing labor intensity and operational risks.

[0048] In the implementation of this embodiment, the complete workflow includes four main stages: preparation, sample loading, drilling, and sample unloading.

[0049] Phase 1: Equipment Preparation

[0050] 1. Site Layout and Equipment Placement: Select a relatively flat construction area and place the drilling device (in its stowed state) in the center of the area. Rotate each support leg 2 outwards in sequence until the side of each support leg 2 is tightly fitted with the corresponding limiting block 34 (the top 37 of the limiting screw 35 on the left). Check whether the support platform 1 is in a stable and level state.

[0051] 2. Adjusting the cantilever dimensions: Based on the length and width dimensions of the precast wall panel 7 to be processed, pre-adjust the lengths of the four extended cantilever arms 24. The operator pulls the telescopic rod 30 outward so that the clear distance between the end blocks 25 on both sides is slightly less than the width of the wall panel. Then, the limiting rod 31 is inserted into the corresponding limiting hole 32, and the tension spring 27 is attached. The tension of the tension spring 27 will cause the extended cantilever arms 24 to automatically adapt and clamp the precast wall panel 7.

[0052] 3. Move the drilling station away: Push the sliding seat 4 forward (away from the center of the support platform 1) to move the C-shaped mounting bracket 5 to the front limit position, leaving sufficient operating space for the hoisting or placement of the precast wall panel 7.

[0053] Phase Two: Precast Wall Panel Installation (Single-person Operation)

[0054] 1. Activate tilt mode: Rotate the left limit screw 35 to move the top head 37 upward, causing the support platform 1 to tilt stably to the left. Place a pad on the ground to the left of the device to protect the lower edge of the precast wall panel 7.

[0055] 2. Initial positioning: Using lifting equipment or manual labor, move the precast wall panel 7 close to the device, and let the left end of the precast wall panel 7 rest on the pad.

[0056] 3. Labor-saving loading: Lift the right side of the precast wall panel 7 and place it on the support wheel 36. During this process, the precast wall panel 7 slides on the ground through the pad block to avoid damage.

[0057] 4. Pushing and Clamping: Lift the left side of the precast wall panel 7 and push it to the right. During the pushing process, the sliding friction of the precast wall panel 7 changes to rolling friction with the support wheel 36, greatly reducing the resistance. Under the combined action of gravity and human pushing force, the precast wall panel 7 moves smoothly to the right. The right end of the precast wall panel 7 rests on the right-side support block 26, and the left end of the precast wall panel 7 rests on the left-side support block 26. The tension springs 27 on both sides ensure that the precast wall panel 7 is flexibly and firmly clamped.

[0058] 5. Leveling and locking: Rotate the limit screw 35 in the opposite direction to lower the top head 37. Under the constraint of its own structure and the legs 2, the support platform 1 smoothly returns to a precise horizontal state. At this time, the precast wall panel 7 is horizontally and stably supported in the center of the device.

[0059] Phase 3: Drilling

[0060] 1. Positioning and Alignment: The operator positions the pre-marked holes on the precast wall panel 7 according to coordinates. Through the combined motion of manually rotating the wall panel (driven by the lifting mechanism 3) and moving the sliding seat 4 back and forth (driven by the C-shaped mounting bracket 5), the central axis of the C-shaped placement ring 14 can be easily and accurately aligned with the hole to be drilled.

[0061] 2. Install the drill bit 13: Place the hand-held electric drill commonly used on the construction site (as the drill bit 13) vertically into the C-shaped placement ring 14 with the drill bit facing down.

[0062] 3. Drilling: Start the handheld drill. The operator holds the drill handle with both hands and applies a steady downward pressure. The handheld drill and the C-shaped placement ring 14 descend together. At the same time, the synchronous lifting assembly 15 responds immediately, driving the lifting ring 9 on the lifting slide 8 to move upward synchronously. Before the drill bit contacts the upper surface of the precast wall panel 7, the lifting ring 9 is already tightly attached to and supporting the corresponding lower surface of the precast wall panel 7.

[0063] 4. Complete a single hole: The operator continues to press down on the hand-held electric drill to complete the drilling operation. During this period, the lifting ring 9 always provides a stable reverse support force, effectively suppressing the vibration of the precast wall panel 7 and preventing edge chipping and internal cracks at the drill exit.

[0064] 5. Shifting and Repeating: After machining a single hole, the operator slowly releases the downward pressure. Under the action of the synchronous lifting assembly 15 and gravity, the lifting ring 9 and the drill 13 automatically reset. Subsequently, steps 1 to 4 are repeated to machine all predetermined holes by rotating the prefabricated wall panel 7 and moving the C-shaped mounting bracket 5.

[0065] Phase 4: Removal of precast wall panels 7

[0066] 1. Activate tilt mode: Repeat the clamping operation, rotate the limit screw 35 to tilt the support platform 1 to the left again.

[0067] 2. Labor-saving unloading: The operator lifts the left side of the precast wall panel 7, causing its edge to detach from the left side support block 26, and then puts it back on the left side support wheel 36.

[0068] 3. Remove the wall panel: Pull the precast wall panel 7 horizontally to the left. When the center of gravity of the precast wall panel 7 is on the left side of the drilling device, slowly lower the left side of the precast wall panel 7 onto the pad on the ground. Push the precast wall panel 7 to the left. After the precast wall panel 7 is separated from the support wheel 36, place the right end of the precast wall panel 7 on the ground. At this time, the precast wall panel 7 can be transferred to the target position according to the subsequent construction procedures.

[0069] 4. Reset the device: Adjust the support platform 1 back to a horizontal position, clean the device, and prepare for the next round of work or for storage.

[0070] This invention provides a drilling device for precast concrete wall panels. An adjustable lifting mechanism 3 stably clamps and rotates the precast wall panel 7, combined with a sliding drilling mechanism 6, achieving precise positioning and drilling. Its innovative synchronous lifting component 15 automatically provides reverse support during drilling, effectively suppressing vibration and preventing outlet cracking, significantly improving hole quality and wall panel integrity. The unique inclined clamping and support wheel 36 design transforms the arduous vertical lifting into labor-saving rolling sliding, allowing a single person to safely and conveniently load and unload large precast wall panels 7, greatly reducing labor intensity and reliance on manpower. Furthermore, the device is compatible with various precast wall panel sizes 7 and can be directly used with a general-purpose electric drill, combining high versatility and economy, providing a highly efficient, precise, safe, and cost-effective dedicated drilling solution for construction sites.

[0071] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A drilling device for precast concrete wall panels, comprising a support platform, wherein a support leg is provided on the side of the support platform near the ground, characterized in that, The support platform is slidably connected to a sliding seat on the side away from the ground. A C-shaped mounting bracket is provided at the end of the sliding seat away from the support platform. The opening of the C-shaped mounting bracket faces the central area of ​​the support platform. It also includes a drilling mechanism and a lifting mechanism. A lifting mechanism is provided in the middle of the support platform for horizontally supporting and fixing the precast wall panel, and can drive the precast wall panel to rotate around the center of the support platform. The lifting mechanism includes a rotating column vertically rotatably connected to the middle of the support platform. A rotating disk is provided at the top of the rotating column and is parallel to the support platform. An extended cantilever is provided on the outer edge of the rotating disk. An end stop is provided at the far end of the extended cantilever. A support block is provided on the side of the end stop near the rotating disk and is parallel to the rotating disk. The support block is located above the extended cantilever. A drilling mechanism, located at the end of the C-shaped mounting bracket near the center of the support platform, is used to drill holes in the precast wall panel fixed by the lifting mechanism. The drilling mechanism includes an extension block located at the end of the C-shaped mounting bracket away from the support platform. Suspension rods are slidably connected to both sides of the extension block. A suspension block is located at the end of the suspension rod near the support platform. A C-shaped placement ring is fixedly connected to the end of the suspension block near the center of the extension block. A drill bit is mounted on the C-shaped placement ring. A lifting rod is slidably connected to the end of the C-shaped mounting bracket near the support platform. The axis of the lifting rod is collinear with the axis of the C-shaped placement ring. A lifting ring is located at the end of the lifting rod away from the support platform. The inner... The unit is equipped with a synchronous lifting assembly, which drives the suspension slide bar and the lifting slide bar to move in opposite directions. The synchronous lifting assembly includes two sliders slidably connected to the side of the C-shaped mounting frame near the support platform. A buffer spring is provided between the two sliders. The side of the slider away from the lifting slide bar is connected to one end of a first traction rope, and the other end of the first traction rope is connected to the side of the C-shaped placement ring. The inner side of the C-shaped mounting frame is provided with a guide wheel that cooperates with the first traction rope. The side of the slider near the lifting slide bar is connected to one end of a second traction rope, and the other end of the second traction rope is connected to the end of the C-shaped mounting frame. The end of the lifting slide bar near the support platform is provided with an arc-shaped head that cooperates with the second traction rope.

2. The drilling device for precast concrete wall panels according to claim 1, characterized in that, The number of extended cantilevers is four, and they are symmetrically arranged in pairs on both sides of the rotating disk. Each extended cantilever includes a telescopic sleeve fixedly connected to the rotating disk. A telescopic rod is slidably connected to the side of the telescopic sleeve away from the rotating disk, and the far end of the telescopic rod is fixedly connected to an end stop.

3. The drilling device for precast concrete wall panels according to claim 2, characterized in that, The telescopic sleeve has a fixing post on its side, and the telescopic rod has multiple limiting holes evenly distributed on its side. A limiting rod is inserted into the limiting hole near the end of the telescopic sleeve. The limiting rod and the fixing post are respectively connected to the two ends of the tension spring.

4. The drilling device for precast concrete wall panels according to claim 1, characterized in that, The sliding seat has a U-shaped structure, and its two sides are slidably connected to the two sides of the support platform. The C-shaped mounting bracket and the sliding seat are located on the two sides of the rotating disk.

5. The drilling device for precast concrete wall panels according to claim 1, characterized in that, The top of the outrigger is rotatably connected to the support platform via a rotating seat. The bottom of the support platform is also provided with a limiting block. When the outrigger rotates to the side where it fits against the limiting block, the outrigger is tilted outward.

6. The drilling device for precast concrete wall panels according to claim 5, characterized in that, The end of the end block is provided with a support wheel, the rim of the support wheel is higher than the top surface of the end block, and the side of the support platform is threaded with a limit screw, the limit screw and the support wheel are located on the same side of the support platform, and the end of the limit screw is provided with a top head that cooperates with the support leg.

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