Pipeline building punching device for indoor building construction

By designing a drilling device with a sliding frame, locking components, and flow channels, the stability and accuracy issues of the device in confined spaces and multi-angle scenarios during indoor construction were solved, enabling efficient and flexible drilling operations, extending the device's lifespan, and reducing health risks.

CN121848536APending Publication Date: 2026-04-14GUANGZHOU NO 1 RENOVATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-03
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing indoor building construction pipeline drilling devices are inconvenient to move in narrow spaces such as corners and ceiling mezzanines, as well as in multi-angle scenarios, resulting in poor stability and low drilling accuracy.

Method used

A drilling device is designed, comprising a protective shell, a sliding frame, a locking component, an impact drill bit, and a flow channel. The sliding frame drives the drill bit to move precisely, and the depth can be observed with a scale plate. The locking component and flow channel provide flexibility and dustproof cooling, while the sealing component prevents dust and liquid from entering.

Benefits of technology

It improves the adaptability to construction in complex environments and the drilling accuracy, extends the service life of the equipment, reduces dust diffusion and health risks, and optimizes the construction environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of concrete punching, and discloses an indoor building construction pipeline building punching device which comprises a protective shell, a first elastic piece is arranged in the protective shell, a sliding plate is arranged at one end of the first elastic piece, and the outer portion of the sliding plate is slidably connected to the interior of the protective shell. A sliding frame is arranged on one side of the sliding plate, the exterior of the sliding frame is slidably connected to the interior of the protective shell, a supporting plate is fixedly connected to the exterior of the sliding frame, a first handle is fixedly connected to the exterior of the supporting plate, and a threaded rod is in threaded connection to the interior of the sliding frame. The first handle is pushed to drive the sliding frame and the percussion bit to move outwards, so that the construction adaptability and flexibility can be improved, dust and liquid are prevented from entering the protection shell, core power, control and transmission parts are prevented from being clamped due to dust invasion or being rusted and short-circuited due to liquid contact, and the service life of the device is prolonged.
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Description

Technical Field

[0001] This invention relates to the field of concrete drilling technology, specifically to a drilling device for pipeline installation in indoor building construction. Background Technology

[0002] The core of pipe drilling equipment in indoor building construction is the evolution from traditional hand tools to professional and efficient systems. Electric hammers are responsible for a large number of small-diameter anchoring and shallow hole operations, while large-diameter, high-precision holes required to penetrate floor slabs and walls and lay main pipelines must rely on water drills. When paired with diamond drill bits, they can achieve smooth hole walls without damaging the structure.

[0003] Existing indoor building construction pipeline drilling devices generally suffer from insufficient adaptability and flexibility in working conditions. They are difficult to move in confined spaces such as corners and ceiling mezzanines, as well as in multi-angle drilling scenarios such as upward and downward angles, resulting in poor stability and low drilling accuracy. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a drilling device for pipeline installation in indoor building construction. This device solves the problems of poor stability and low drilling accuracy caused by the difficulty of using existing drilling devices for pipeline installation in confined spaces such as corners and ceiling mezzanines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for pipeline installation in indoor building construction, comprising a protective shell, a first elastic element disposed inside the protective shell, a sliding plate disposed at one end of the first elastic element, the sliding plate being slidably connected to the outside of the protective shell, a sliding frame disposed on one side of the sliding plate, the sliding frame being slidably connected to the outside of the protective shell, a support plate being fixedly connected to the outside of the sliding frame, a first handle being fixedly connected to the outside of the support plate, a threaded rod being threadedly connected inside the sliding frame, the threaded rod being threadedly connected to the outside of the protective shell, a scale plate being fixedly connected to the top of the protective shell, a locking component disposed inside the sliding frame, and the locking component being disposed outside of the support plate.

[0006] With the above solution: the sliding frame is slidably connected inside the protective shell, which can drive the drilling bit to move outward. At the same time, since the sliding frame is driven by the first handle manually, precise displacement can be achieved, and it can move next to the scale plate, so the drilling depth can be observed in real time.

[0007] Preferably, the locking assembly includes a locking rod, the locking rod being externally slidably connected to the inside of the sliding frame and the support plate, a pressing rod being fixedly connected to the top of the locking rod, a guide rod being slidably connected to the inside of the locking rod, and a second elastic element being provided at the bottom of the locking rod, the bottom of the second elastic element being located inside the sliding frame.

[0008] Preferably, the outer part of the pressing rod slides inside the sliding frame, and both ends of the guide rod are fixedly connected inside the sliding frame.

[0009] Preferably, a shock-absorbing pad is fixedly connected to one end of the protective shell, an anti-slip ring is fixedly connected to the other end of the protective shell, and a switch is fixedly connected to the top of the protective shell.

[0010] Preferably, a second handle is fixedly connected to the bottom of the protective shell, a water storage tank is fixedly connected inside the protective shell, a water inlet is fixedly connected to one side of the water storage tank, and the outside of the water inlet is fixedly connected to the inside of the protective shell.

[0011] Preferably, a small water pump is fixedly connected inside the other side of the water storage tank, and a transmission pipe is fixedly connected to the output end of the small water pump. A rotary joint is fixedly connected to one end of the transmission pipe, and an impact drill bit is fixedly connected to the outside of the rotary joint.

[0012] Preferably, the external part of the impact drill bit is slidably connected to the inside of the protective housing, the external part of the impact drill bit is rotatably connected to the inside of the sliding frame, the tooth end of the impact drill bit is meshed with a gear, the inside of the gear is fixedly connected to a servo motor, the external part of the servo motor is fixedly connected to the inside of the sliding frame, and the gear and the external part of the servo motor are slidably connected to the inside of the protective housing.

[0013] Preferably, the impact drill bit has a flow channel inside, and the flow channel is fixedly connected to one end of the rotary joint, and a water-blocking membrane is fixedly connected inside the flow channel.

[0014] Preferably, the impact drill bit has a sealing assembly inside, and the sealing assembly is located outside the flow channel.

[0015] Preferably, the sealing assembly includes a compression block, the compression block being slidably connected to the inside of the impact drill bit, a sliding baffle being provided at the bottom end of the compression block, the sliding baffle being slidably connected to the inside of the impact drill bit and the flow channel, and a third elastic element being provided at one end of the sliding baffle, with one end of the third elastic element being located inside the impact drill bit.

[0016] Working principle: First, press the switch, then remove the threaded rod, and at the same time push the first handle to move the impact drill bit outward, so that the impact drill bit can enter the wall. Then the top of the sliding frame will move outside the scale plate, allowing the operator to check the drilling depth. With the action of the locking component, the first handle can be replaced according to the actual situation, thus enabling drilling operations to be completed in complex situations.

[0017] This invention provides a drilling device for pipeline installation in indoor building construction. It has the following beneficial effects: 1. This invention moves the sliding frame and impact drill bit outward by pushing the first handle, and the protective shell guides the impact drill bit. When the first handle needs to be removed, simply press the pressing rod to slide the locking rod downward, and the second elastic element will be compressed. Therefore, when the pressing rod is not pressed, the second elastic element will support the locking rod and lock it inside the support plate and sliding frame. This improves the adaptability and flexibility of construction and prevents dust and liquid from entering the protective shell. It can complete drilling operations in complex conditions such as indoor ceilings, corners, and low ground, improves drilling accuracy, and avoids the core power, control, and transmission components from jamming due to dust intrusion or rusting or short circuits due to liquid contact, thus extending the service life of the device.

[0018] 2. This invention, through the cooperation of a flow channel and a water-blocking membrane, can spray out liquid driven by a small water pump, thereby cooling the impact drill bit and reducing dust generation. This effectively reduces wear and deformation of the drill bit caused by high temperature, extends the service life of the drill bit, ensures drilling accuracy, and at the same time reduces dust diffusion during construction, optimizes the indoor construction environment, and reduces health risks to operators.

[0019] 3. This invention uses the squeezing block to cause the sliding baffle to slide into the flow channel and block the flow channel, thereby achieving the effect of sealing the spray head, effectively preventing liquid from seeping into non-construction areas of the wall, avoiding quality problems such as wall dampness and hollowing, and ensuring that the liquid pressure inside the flow channel opens the water-blocking membrane. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the shock-absorbing pad of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a partial structural diagram of the first handle of the present invention; Figure 5 This is a partial structural diagram of the anti-slip ring of the present invention; Figure 6This is a partial structural diagram of the scale plate of the present invention; Figure 7 This is a partial structural diagram of the transmission tube of the present invention; Figure 8 This is a partial structural diagram of the rotary joint of the present invention; Figure 9 for Figure 8 Enlarged view of point C in the middle; Figure 10 This is a partial structural diagram of the impact drill bit of the present invention; Figure 11 for Figure 10 Enlarged diagram of point B in the middle.

[0021] The components include: 1. Protective shell; 2. First elastic element; 3. Sliding plate; 4. Sliding frame; 5. Support plate; 6. First handle; 7. Threaded rod; 8. Locking assembly; 81. Locking rod; 82. Pressing rod; 83. Guide rod; 84. Second elastic element; 9. Shock-absorbing pad; 10. Scale plate; 11. Anti-slip ring; 12. Switch; 13. Second handle; 14. Water storage tank; 15. Water inlet; 16. Small water pump; 17. Transmission pipe; 18. Rotary joint; 19. Impact drill bit; 20. Gear; 21. Servo motor; 22. Flow channel; 23. Water-blocking membrane; 24. Sealing assembly; 241. Extrusion block; 242. Sliding baffle; 243. Third elastic element. Detailed Implementation

[0022] 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 embodiments of the present invention, and not all embodiments. 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.

[0023] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides an indoor building construction pipeline drilling device, including a protective shell 1, a first elastic element 2 inside the protective shell 1, a sliding plate 3 at one end of the first elastic element 2, the outer side of the sliding plate 3 being slidably connected to the inside of the protective shell 1, a sliding frame 4 on one side of the sliding plate 3, the outer side of the sliding frame 4 being slidably connected to the inside of the protective shell 1, a support plate 5 fixedly connected to the outer side of the sliding frame 4, a first handle 6 fixedly connected to the outer side of the support plate 5, a threaded rod 7 threadedly connected to the inner side of the sliding frame 4, the outer side of the threaded rod 7 being threadedly connected to the inside of the protective shell 1, a scale plate 10 fixedly connected to the top of the protective shell 1, a locking component 8 inside the sliding frame 4, and the outer side of the locking component 8 being located inside the support plate 5. Specifically, the protective shell 1 is used to support the first elastic element 2 for compression and to assist the sliding plate 3 and the support plate 5 in sliding. At the same time, the protective shell 1 is used to support the scale plate 10 for fixation. The scale plate 10 and the support plate 5 cooperate with each other to allow the user to observe the drilling depth in real time. Furthermore, the sliding frame 4 and the support plate 5 are connected by the locking component 8, and the support plate 5 is fixedly connected to the first handle 6. The appropriate first handle 6 can be replaced according to the actual situation.

[0024] Please see the appendix Figure 2 - Appendix Figure 4 The locking assembly 8 includes a locking rod 81, the outer side of which is slidably connected to the inside of the sliding frame 4 and the support plate 5. A pressing rod 82 is fixedly connected to the top of the locking rod 81, a guide rod 83 is slidably connected to the inside of the locking rod 81, and a second elastic element 84 is provided at the bottom of the locking rod 81. The bottom end of the second elastic element 84 is located inside the sliding frame 4. The outer side of the pressing rod 82 slides inside the sliding frame 4, and both ends of the guide rod 83 are fixedly connected to the inside of the sliding frame 4. Specifically, the sliding frame 4 is used to support and fix the guide rod 83, and the guide rod 83 is used to assist the locking rod 81 to slide up and down. In turn, the sliding frame 4 is used to assist the locking rod 81 to slide up and down. When the locking rod 81 is subjected to pressure, it will drive the pressing rod 82 to slide down and squeeze the second elastic member 84. When the locking rod 81 loses its pushing force, the second elastic member 84 will drive the locking rod 81 and the pressing rod 82 to slide back to their original positions. The locking rod 81 can lock the support plate 5 to one end of the sliding frame 4.

[0025] Please see the appendix Figure 1 - Appendix Figure 3 One end of the protective shell 1 is fixedly connected to a shock-absorbing pad 9, the other end of the protective shell 1 is fixedly connected to an anti-slip ring 11, and the top of the protective shell 1 is fixedly connected to a switch 12. Specifically, the protective shell 1 is used to support and fix the shock-absorbing pad 9, the anti-slip ring 11, and the switch 12. The shock-absorbing pad 9 can reduce the vibration of the user's shoulder caused by the vibration force generated when the impact drill bit 19 drills a hole in the wall. At the same time, the anti-slip ring 11 can prevent slippage during the drilling process. Pressing the switch 12 can drive the servo motor 21 to run.

[0026] Please see the appendix Figure 4 - Appendix Figure 6A second handle 13 is fixedly connected to the bottom of the protective shell 1. A water storage tank 14 is fixedly connected inside the protective shell 1. A water inlet 15 is fixedly connected to one side of the water storage tank 14. The outside of the water inlet 15 is fixedly connected to the inside of the protective shell 1. A small water pump 16 is fixedly connected to the other side of the water storage tank 14. A transmission pipe 17 is fixedly connected to the output end of the small water pump 16. A rotary joint 18 is fixedly connected to one end of the transmission pipe 17. An impact drill bit 19 is fixedly connected to the outside of the rotary joint 18. Specifically, the protective shell 1 is used to support and fix the second handle 13, and the second handle 13 can cooperate with the first handle 6 and the shock-absorbing pad 9 to make it more convenient for the operator to use. The protective shell 1 is used to support and fix the second handle 13 to the storage tank 14, and the second handle 13 is used to connect to the external pipe. At the same time, the storage tank 14 can store liquid and is used to support and fix the water inlet 15. The water inlet 15 can transport the liquid inside the storage tank 14 into the small water pump 16, and enter the flow channel 22 through the transmission pipe 17. The small water pump 16 can be extended and retracted, and the transmission pipe 17 can prevent the impact drill bit 19 from repelling the small water pump 16.

[0027] Please see the appendix Figure 5 - Appendix Figure 7 The impact drill bit 19 is externally slidably connected to the inside of the protective housing 1, and externally rotatably connected to the inside of the sliding frame 4. The tooth end of the impact drill bit 19 is meshed with a gear 20, and a servo motor 21 is fixedly connected inside the gear 20. The servo motor 21 is externally fixedly connected to the inside of the sliding frame 4, and the gear 20 and the servo motor 21 are externally slidably connected to the inside of the protective housing 1. Specifically, the protective shell 1 and the sliding frame 4 are used to assist the impact drill bit 19 in sliding. The impact drill bit 19 has a toothed ring on its outside, and the toothed ring meshes with the gear 20. When the servo motor 21 runs, it drives the gear 20 to rotate, which in turn drives the impact drill bit 19 to rotate.

[0028] Please see the appendix Figure 7 - Appendix Figure 9 The impact drill bit 19 has a flow channel 22 inside, and the flow channel 22 is fixedly connected to one end of the rotary joint 18. A water-blocking membrane 23 is fixedly connected inside the flow channel 22. Specifically, the impact drill bit 19 has a flow channel 22 inside, which is used to transport liquid from the impact drill bit 19 and spray it out. Then, the rotary joint 18 is fixed inside the impact drill bit 19. A water-blocking membrane 23 is fixedly connected inside the flow channel 22, and the flow channel 22 is connected to the spray head. The impact drill bit 19 has multiple spray heads, and each spray head has a water-blocking membrane 23 inside. The first spray head does not have a water-blocking membrane 23 inside. When the first spray head enters the wall, the pressure will cause the liquid to spray out from the water-blocking membrane 23. Each water-blocking membrane 23 has a different thickness, so not all water-blocking membranes 23 will open at the same time.

[0029] Please see the appendix Figure 8 - Appendix Figure 11 The impact drill bit 19 is provided with a sealing component 24 inside, and the sealing component 24 is provided with an exterior inside the flow channel 22. The sealing component 24 includes a squeezing block 241, the exterior of the squeezing block 241 is slidably connected to the interior of the impact drill bit 19, the bottom end of the squeezing block 241 is provided with a sliding baffle 242, the exterior of the sliding baffle 242 is slidably connected to the interior of the impact drill bit 19 and the flow channel 22, and one end of the sliding baffle 242 is provided with a third elastic member 243, one end of the third elastic member 243 is provided inside the impact drill bit 19. Specifically, the impact drill bit 19 is used to support the extrusion block 241 and the sliding baffle 242 to slide. When the impact drill bit 19 enters the interior of the wall, it will squeeze the extrusion block 241 to slide downward. The top of the extrusion block 241 is provided with an angle, which makes it easier for the extrusion block 241 to slide downward. The extrusion block 241 will drive the sliding baffle 242 to move into the flow channel 22 and drive the third elastic element 243 to stretch.

[0030] Workflow: First, press switch 12 to start servo motor 21. Servo motor 21 will drive gear 20 to rotate, and gear 20 will mesh with the toothed end of impact drill bit 19, causing impact drill bit 19 to rotate. Then, remove threaded rod 7 from inside the protective shell 1 and sliding frame 4, which will cause sliding frame 4 to lose its locking force. Then, hold the second handle 13 with one hand and the sliding frame 4 with the other hand, while resting your shoulder on the shock-absorbing pad 9. Place the anti-slip ring 11 on the position where the hole needs to be opened, and then push the first handle 6. The first handle 6 will drive the sliding frame 4 to move outward. Then, the sliding frame 4 will drive the impact drill bit 19, gear 20, and servo motor 21 to move outward synchronously. The transmission tube 17 will be extended, causing the impact drill bit 19 to drill a hole. The sliding frame 4 will also squeeze the sliding plate 3 to slide into the protective shell 1, and drive the first elastic element 2 to compress, thereby guiding the sliding frame 4 and preventing dust from entering the protective shell 1. Dust and splashing liquid are prevented from entering the protective shell 1. The sliding frame 4 slides on the left side of the scale plate 10, providing real-time reminders to the operator about the drilling depth. When the drilling location is special and a more suitable first handle 6 needs to be replaced, the pressing rod 82 is pressed to move the locking rod 81 downward and squeeze the second elastic element 84. The locking rod 81 slides outside the guide rod 83, which provides guiding force for the locking rod 81. Then, one end of the locking rod 81 moves from the locking groove inside the support plate 5 to the sliding groove inside the support plate 5. Pulling the first handle 6 will remove the first handle 6 from the support plate 5 and replace it with a suitable first handle 6. This improves the adaptability and flexibility of construction and prevents dust and liquid from entering the protective shell 1. Drilling can be completed in complex conditions such as indoor ceilings, corners, and low ground, improving drilling accuracy and preventing the core power, control, and transmission components from jamming due to dust intrusion or rusting or short circuit due to liquid contact, thus extending the service life of the device. Simultaneously, while the impact drill bit 19 is drilling again, the small water pump 16 will pump the liquid inside the storage tank 14 into the transmission pipe 17, and then into the flow channel 22 through the rotary joint 18. The liquid will then be sprayed outwards from the impact drill bit 19 through the flow channel 22. At this point, the impact drill bit 19 is already outside the protective casing 1 and will not spray inside the protective casing 1. When the first spray nozzle is fully inside the wall, the liquid will squeeze the water-blocking membrane 23 and spray outwards from the water-blocking membrane 23. It has multiple spray nozzles connected to the flow channel 22. The water-blocking film 23 is fixed inside the last two spray nozzles. The first water-blocking film 23 is thinner than the second water-blocking film 23 and will open first. This can cool down the impact drill bit 19 and reduce dust generation. It can reduce wear and deformation of the drill bit caused by high temperature, extend the service life of the drill bit, ensure drilling accuracy, reduce dust diffusion during construction, optimize the indoor construction environment, and reduce the health risks of operators. When the impact drill bit 19 enters the wall, it squeezes the squeezing block 241, which slides downwards, causing the sliding baffle 242 to move outwards and block the spray nozzle inside the impact drill bit 19. The sliding baffle 242 also stretches, allowing liquid to accumulate inside the flow channel 22. The excessive liquid pressure forces the water-blocking membrane 23 open for spraying. When the impact drill bit 19 is withdrawn from the wall, the squeezing block 241 loses its locking force, and the third elastic element 243, through its own properties, moves the sliding baffle 242 back to its original position, squeezing the squeezing block 241 back to its original position. This seals the spray nozzle, preventing liquid from seeping into non-construction areas of the wall, avoiding quality problems such as dampness and hollowing, and ensuring that the liquid pressure inside the flow channel 22 opens the water-blocking membrane 23.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling device for pipeline installation in indoor building construction, comprising a protective outer shell (1), characterized in that, The protective shell (1) is provided with a first elastic element (2) inside. A sliding plate (3) is provided at one end of the first elastic element (2). The sliding plate (3) is slidably connected to the inside of the protective shell (1) outside. A sliding frame (4) is provided on one side of the sliding plate (3). The sliding frame (4) is slidably connected to the inside of the protective shell (1) outside. A support plate (5) is fixedly connected to the outside of the sliding frame (4). A first handle (6) is fixedly connected to the outside of the support plate (5). A threaded rod (7) is threadedly connected to the inside of the sliding frame (4). The threaded rod (7) is threadedly connected to the inside of the protective shell (1) outside. A scale plate (10) is fixedly connected to the top of the protective shell (1). A locking component (8) is provided inside the sliding frame (4). The locking component (8) is located inside the support plate (5) outside.

2. The drilling device for pipeline installation in indoor building construction according to claim 1, characterized in that, The locking assembly (8) includes a locking rod (81), the locking rod (81) is externally slidably connected to the inside of the sliding frame (4) and the support plate (5), the top end of the locking rod (81) is fixedly connected to a pressing rod (82), the inside of the locking rod (81) is slidably connected to a guide rod (83), and the bottom end of the locking rod (81) is provided with a second elastic element (84), the bottom end of the second elastic element (84) is provided inside the sliding frame (4).

3. The drilling device for pipeline installation in indoor building construction according to claim 2, characterized in that, The outside of the pressing rod (82) slides inside the sliding frame (4), and the two ends of the guide rod (83) are fixedly connected inside the sliding frame (4).

4. The drilling device for pipeline installation in indoor building construction according to claim 1, characterized in that, One end of the protective shell (1) is fixedly connected to a shock-absorbing pad (9), the other end of the protective shell (1) is fixedly connected to an anti-slip ring (11), and the top of the protective shell (1) is fixedly connected to a switch (12).

5. The drilling device for pipeline installation in indoor building construction according to claim 1, characterized in that, The bottom of the protective shell (1) is fixedly connected to a second handle (13), and the inside of the protective shell (1) is fixedly connected to a water storage tank (14). The inside of one side of the water storage tank (14) is fixedly connected to a water inlet (15), and the outside of the water inlet (15) is fixedly connected to the inside of the protective shell (1).

6. The drilling device for pipeline installation in indoor building construction according to claim 5, characterized in that, A small water pump (16) is fixedly connected inside the other side of the storage tank (14). A transmission pipe (17) is fixedly connected to the output end of the small water pump (16). A rotary joint (18) is fixedly connected to one end of the transmission pipe (17). An impact drill bit (19) is fixedly connected to the outside of the rotary joint (18).

7. The drilling device for pipeline installation in indoor building construction according to claim 6, characterized in that, The impact drill bit (19) is externally slidably connected to the inside of the protective shell (1), and externally rotatably connected to the inside of the sliding frame (4). The tooth end of the impact drill bit (19) is meshed with a gear (20). A servo motor (21) is fixedly connected inside the gear (20). The servo motor (21) is externally fixedly connected to the inside of the sliding frame (4). The gear (20) and the servo motor (21) are externally slidably connected to the inside of the protective shell (1).

8. The drilling device for pipeline installation in indoor building construction according to claim 6, characterized in that, The impact drill bit (19) has a flow channel (22) inside, and the flow channel (22) is fixedly connected to one end of the rotary joint (18). A water-blocking membrane (23) is fixedly connected inside the flow channel (22).

9. A drilling device for pipeline installation in indoor building construction according to claim 6, characterized in that, The impact drill bit (19) is provided with a sealing component (24) inside, and the sealing component (24) is provided outside the flow channel (22).

10. A drilling device for pipeline installation in indoor building construction according to claim 9, characterized in that, The sealing assembly (24) includes a compression block (241), the outside of which is slidably connected to the inside of the impact drill bit (19). A sliding baffle (242) is provided at the bottom end of the compression block (241), the outside of which is slidably connected to the inside of the impact drill bit (19) and the flow channel (22). A third elastic element (243) is provided at one end of the sliding baffle (242), and one end of the third elastic element (243) is provided inside the impact drill bit (19).