A drilling device for civil construction of a hydropower station

Abstract

This invention relates to the field of construction equipment technology, specifically to a drilling device for hydropower station civil construction. The device includes a gasoline hand drill main unit, a power cutting unit, a chuck, and a drill bit. The power cutting unit is fixedly installed on the output end of the gasoline hand drill main unit. This device is equipped with two power cutting units, ensuring that when the drill bit seizes up during use, the gasoline hand drill main unit will not be subjected to reverse torque, thus preventing injury to the user's hand and reducing the risk of accidents. Furthermore, if the user holds the drilling device at an angle that does not meet usage standards, it prevents the locking head from locking into the chuck groove. Even if the user forces the device, the magnetic force between the magnetic coupling and the magnetic suction coupling will not be sufficient to drive the drill bit to rotate and drill into the wall, thereby preventing accidents caused by improper use and avoiding losses for the employer.

Description

Technical Field

[0001] This invention relates to the field of construction equipment technology, specifically to a drilling device for civil construction of hydropower stations. Background Technology

[0002] In the construction of hydropower stations, it is often necessary to pre-drill holes in the wall surface to install workpieces inside the wall and facilitate the use of expansion bolts. According to a Chinese patent application with publication number 202121838963.0, a wall drilling device for civil engineering construction is disclosed. This device enables the drill bit to move stably to the left and enter the center of the positioning ring plate, and then perform stable drilling operations on the wall surface. This can avoid vibration of the drill body and effectively improve the efficiency of drilling into the wall surface. However, during the use of this device, if the drill bit gets stuck inside the wall during high-speed rotation, the user needs a certain reaction time and cannot release the handle switch at the moment the drill bit gets stuck. This can generate a reverse torque on the user's hand, which can easily injure the user's hand and pose a certain safety hazard. Therefore, we propose a drilling device for hydropower station civil engineering construction to solve the above-mentioned technical problems. Summary of the Invention

[0003] This invention provides the following technical solution: a drilling device for civil construction of a hydropower station, comprising:

[0004] A gasoline hand drill main unit and a power cutting unit, wherein the power cutting unit is fixedly installed at the output end of the gasoline hand drill main unit;

[0005] The chuck is fixedly installed at the output end of the power cutting unit;

[0006] The drill bit is fixedly mounted on the end of the chuck away from the power cutting unit.

[0007] As a preferred embodiment of the present invention, the power cutting unit includes a power cutting unit one, which includes:

[0008] The aluminum alloy housing is fixedly connected to the output end housing of the gasoline hand drill main unit by bolts.

[0009] The drive sleeve is fixedly installed on the outer wall of the output shaft of the gasoline hand drill main unit;

[0010] The card slots are evenly distributed on the inner wall of the drive sleeve;

[0011] The outer end shaft is rotatably mounted on the end of the aluminum alloy housing away from the gasoline hand drill main unit, and extends through the inside and outside of the aluminum alloy housing;

[0012] The drive disc is fixedly installed at one end of the outer shaft near the main body of the gasoline hand drill, and is located inside the drive sleeve;

[0013] The tensioning seat is fixedly installed at equal angles on the side of the drive plate away from the main unit of the gasoline hand drill;

[0014] The slide groove is formed on the side of the tensioner seat near the drive disc;

[0015] The slide bar is slidably installed inside the slide groove;

[0016] The lock head is fixedly installed at one end of the slide bar near the inner wall of the drive sleeve, and the specifications of the lock head are adapted to the specifications of the slot;

[0017] The power cut-off unit one also includes:

[0018] A strip groove is formed through the tensioner seat on one side away from the drive disc, and the interior of the strip groove is connected to the interior of the slide groove;

[0019] Positioning rod one is fixedly installed on the side of the slide bar away from the drive plate, and slides through the inside of the strip groove;

[0020] Positioning rod 2 is fixedly installed on the side of the tensioning seat away from the slide bar, and the positions of tension spring 1 and positioning rod 1 are adapted to the opening trajectory direction of the slide groove;

[0021] Tension spring one is fixedly installed between positioning rod one and positioning rod two;

[0022] The power cutting unit further includes a second power cutting unit, which includes:

[0023] The groove is located in the middle of the side of the drive disc away from the outer end shaft.

[0024] The shaft pin is fixedly installed in the middle of the inner wall of the trough near the outer end shaft.

[0025] The three-grip turntable is rotatably mounted on the outer wall of the shaft pin;

[0026] Embedded grooves are evenly distributed on the outer wall of the three-grip turntable;

[0027] An arc-shaped permanent magnet is fixedly installed inside the embedded groove;

[0028] The mounting slots are evenly distributed on the inner wall of the settling tank, and their positions correspond one-to-one with the arc-shaped permanent magnets.

[0029] The winding coil is fixedly installed inside the mounting slot, and the specifications of the winding coil are compatible with the specifications of the arc-shaped permanent magnet.

[0030] The outer end shaft is coaxial with the drive disk, the drive disk is coaxial with the drive sleeve, the drive sleeve is coaxial with the output shaft of the gasoline hand drill, a magnetic coupling is fixedly installed at the output shaft end of the gasoline hand drill, a sealing side plate is fixedly installed on the side of the drive disk away from the outer end shaft, a pivot shaft is fixedly installed in the middle of the side of the sealing side plate close to the gasoline hand drill, and a magnetic coupling is fixedly installed at the end of the pivot shaft away from the sealing side plate, the magnetic coupling is adapted to the magnetic coupling.

[0031] A chuck is fixedly installed at the output end of the outer shaft, and a drill bit is fixedly installed inside the chuck.

[0032] As a preferred embodiment of the present invention, the second power cutting-off unit further includes:

[0033] Curved grooves are evenly distributed on the outer wall of the three-grip turntable and are located between two adjacent embedded grooves;

[0034] The push rod is fixedly installed on the side of the slide bar near the main body of the gasoline hand drill and away from the lock head. The position of the push rod corresponds one-to-one with the position of the curved groove.

[0035] As a preferred embodiment of the present invention, the second power cutting-off unit further includes:

[0036] The clearance grooves are evenly distributed on the inner wall of one side of the sink near the outer end shaft. The positions of the clearance grooves correspond one-to-one with the positions of the push rods, and the push rods slide inside the clearance grooves.

[0037] As a preferred embodiment of the present invention, the second power cutting-off unit further includes:

[0038] Positioning rod three is fixedly installed on the inner wall of the sink near the outer end shaft, and the position of positioning rod three corresponds one-to-one with the position of the curved groove;

[0039] Positioning rod four is fixedly installed on the side of the three-grip turntable away from the outer end shaft, and is located between two adjacent curved grooves;

[0040] Tension spring two is fixedly installed between positioning rod three and positioning rod four.

[0041] As a preferred embodiment of the present invention, an angle sensor is fixedly installed inside the aluminum alloy housing, and the mounting groove is electrically connected to the angle sensor installed inside the aluminum alloy housing.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. In this invention, when the drill bit suddenly seizes up during rotation, the rebound force of the tension spring one, through the connecting action of the positioning rod one, pushes the slide bar along the inner wall of the slide groove towards the center of the drive disc, and drives the lock head to move together, so that the lock head and the slot are disengaged. After that, the rotation of the drive sleeve can no longer directly affect the rotation of the lock head. The magnetic force between the magnetic coupling one and the magnetic suction coupling two is relatively limited, which can ensure that when the drill bit seizes up, the gasoline hand drill host will not be subjected to reverse torque and injure the user's hand, thus reducing the occurrence of safety accidents.

[0044] 2. In this invention, when the angle at which the user holds the drilling device does not conform to the usage standard, the winding coil generates a magnetic effect. Under the magnetic action between the coil and the arc-shaped permanent magnet, it pushes the three-grip turntable to rotate along the periphery of the shaft pin. The rotation of the three-grip turntable causes the curved groove to rotate as well, making the inner wall of the curved groove contact the outer wall of the clearance groove. This applies a thrust to the clearance groove in the direction of the shaft pin's center. After receiving this thrust, the clearance groove applies a thrust in the same direction to the slide bar and the locking head. Subsequently, even if the user forcibly starts the gasoline hand drill, the drive disc will rotate under the magnetic force between the magnetic coupling one and the magnetic suction coupling two. The slide bar cannot slide along the inside of the groove by centrifugal force. If the user forces the use of this device, it will be impossible to drive the drill bit to rotate solely by the magnetic force between the magnetic coupling one and the magnetic suction coupling two to drill a hole in the wall. This avoids safety accidents caused by the user's improper use, thereby preventing losses to the employer. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of the present invention;

[0046] Figure 2 This is a side sectional view of the aluminum alloy shell in this invention;

[0047] Figure 3 In this invention Figure 2 A partial structural diagram;

[0048] Figure 4 This is a schematic diagram of the internal structure of the drive sleeve in this invention;

[0049] Figure 5 This is a schematic diagram of the unfolded structure of the sealing side plate and the drive disk in this invention;

[0050] Figure 6 This is a schematic diagram of the internal structure of the settling tank in this invention;

[0051] Figure 7 This is a schematic diagram of the three-grip turntable in the present invention. Figure 1 ;

[0052] Figure 8 This is a schematic diagram of the three-grip turntable in the present invention. Figure 2 ;

[0053] Figure 9 This is a schematic diagram of the structure of the magnetic coupling in this invention.

[0054] In the diagram: 100, Gasoline hand drill main unit; 101, Magnetic coupling one; 200, Power cutting unit; 201, Aluminum alloy housing; 202, Drive sleeve; 203, Slot; 204, Outer end shaft; 205, Drive disc; 206, Tensioner seat; 207, Slide groove; 208, Slide bar; 209, Lock head; 2010, Strip groove; 2011, Positioning rod one; 2012, Positioning rod two; 2013, Tension spring one; 2014, Countersunk groove; 2015, 2016, 2017, 2018, 2019, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2010, 2019, 2010, 2011, 2019, 2010, 2011, 2012, 2019, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2019, 2010 ... 5. Shaft pin; 2016. Three-grip turntable; 20161. Curved groove; 2017. Embedded groove; 2018. Arc-shaped permanent magnet; 2019. Mounting groove; 2020. Winding coil; 2021. Push rod; 2022. Displacement groove; 2023. Positioning rod three; 2024. Positioning rod four; 2025. Tension spring two; 2026. Sealing side plate; 2027. Pivot shaft; 2028. Magnetic coupling two; 300. Chuck; 400. Drill bit. Detailed Implementation

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] Please see Figures 1-9 The technical solution provided by the present invention specifically includes the following embodiments:

[0057] A drilling device for civil construction of a hydropower station includes a gasoline hand drill 100, a power cutting unit 200, a chuck 300, and a drill bit 400. The power cutting unit 200 is fixedly installed on the output end of the gasoline hand drill 100, the chuck 300 is fixedly installed on the output end of the power cutting unit 200, and the drill bit 400 is fixedly installed on the end of the chuck 300 away from the power cutting unit 200.

[0058] For further details, please refer to [link / reference]. Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown:

[0059] The power cutting unit 200 includes a power cutting unit one, which includes an aluminum alloy housing 201, a drive sleeve 202, a slot 203, an outer end shaft 204, a drive disc 205, a tension seat 206, a slide groove 207, a slide bar 208, a lock head 209, a strip groove 2010, a positioning rod one 2011, a positioning rod two 2012, and a tension spring one 2013. The aluminum alloy housing 201 is fixedly connected to the output end shell of the gasoline hand drill main unit 100 by bolts. The drive sleeve 202 is fixedly installed on the outer wall of the output shaft of the gasoline hand drill main unit 100. The slots 203 are evenly distributed at angles on the inner wall of the drive sleeve 202. The outer end shaft... 204 is rotatably mounted on the end of the aluminum alloy housing 201 away from the gasoline hand drill main body 100, and penetrates the inside and outside of the aluminum alloy housing 201. The drive disc 205 is fixedly mounted on the end of the outer shaft 204 near the gasoline hand drill main body 100, and is located inside the drive sleeve 202. The tensioning seat 206 is fixedly mounted on the side of the drive disc 205 away from the gasoline hand drill main body 100 at equal angles. The slide groove 207 is formed on the side of the tensioning seat 206 near the drive disc 205. The slide bar 208 is slidably mounted inside the slide groove 207. The lock head 209 is fixedly mounted on the end of the slide bar 208 near the inner wall of the drive sleeve 202. The specifications of the lock head 209 are the same as those of the drive sleeve 202. The slot 203 is compatible with the specifications. A strip groove 2010 is formed through the tensioning seat 206 on the side away from the drive disc 205. The interior of the strip groove 2010 is connected to the interior of the slide groove 207. Positioning rod one 2011 is fixedly installed on the side of the slide bar 208 away from the drive disc 205 and slides through the interior of the strip groove 2010. Positioning rod two 2012 is fixedly installed on the side of the tensioning seat 206 away from the slide bar 208. The positions of tension spring one 2013 and positioning rod one 2011 are compatible with the opening trajectory direction of the slide groove 207. Tension spring one 2013 is fixedly installed between positioning rod one 2011 and positioning rod two 2012. The outer end shaft... 204 is coaxial with drive disc 205, drive disc 205 is coaxial with drive sleeve 202, drive sleeve 202 is coaxial with output shaft of gasoline hand drill 100, magnetic coupling 101 is fixedly installed at the output shaft end of gasoline hand drill 100, sealing side plate 2026 is fixedly installed on the side of drive disc 205 away from outer end shaft 204, pivot shaft 2027 is fixedly installed in the middle of the side of sealing side plate 2026 near gasoline hand drill 100, magnetic coupling 2028 is fixedly installed at the end of pivot shaft 2027 away from sealing side plate 2026, magnetic coupling 2028 is compatible with magnetic coupling 101.

[0060] Specifically, the construction worker holds the gasoline hand drill 100, aligns the drill bit 400 with the wall surface at the drilling location, and then presses the start switch of the gasoline hand drill 100. This causes the output shaft of the gasoline hand drill 100 to drive the magnetic coupling 101 and the drive sleeve 202 to rotate. The rotation of the magnetic coupling 101 drives the magnetic coupling 2028 to rotate through magnetic force. The rotation of the magnetic coupling 2028 further drives the sealing side plate 2026 to rotate through the pivot shaft 2027. Since the sealing side plate 2026 is fixedly connected to the drive disc 205, the rotation of the sealing side plate 2026 drives the drive disc 205 and the outer end shaft 204 to rotate. The rotation of the positioning rod 2024 drives the chuck 300 and the drill bit 400 to rotate together. At this time, because the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028 is limited, The rotation of the drill bit 400 solely by the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028 is insufficient for drilling into the wall. Simultaneously, the rotation of the drive disc 205 also causes the tension seat 206 and the slide groove 207 to rotate together. Due to the sliding connection between the slide bar 208 and the slide groove 207, the tension seat 206 rotates along with the drive disc 205, causing the slide bar 208 to generate centrifugal force. This, in turn, pushes the lock head 209 to move away from the center of the drive disc 205 and engage with the slot 203. At this time, the rotation of the drive sleeve 202, under the engaging action of the slot 203 and the lock head 209, causes the lock head 209, slide bar 208, tension seat 206, and drive disc 205 to rotate together, thereby causing the outer end shaft 204, chuck 300, and drill bit 400 to rotate and drill into the wall.

[0061] When the drill bit suddenly seizes during rotation, the chuck 300, outer end shaft 204, and drive disc 205 stop abruptly. The centrifugal force on the slide bar 208 disappears, and the rebound force of the tension spring 2013, through the connection of the positioning rod 2011, pushes the slide bar 208 along the inner wall of the groove 207 towards the center of the drive disc 205, and moves the locking head 209 along with it, thus disengaging the locking head 209 from the slot 203. After this, the rotation of the drive sleeve 202 can no longer directly affect the rotation of the locking head 209; that is, the drive sleeve 202 cannot pass through the locking head 209. 9. The connecting action of the slide bar 208, tension seat 206, etc. drives the drive disc 205 to rotate, which will not drive the outer end shaft 204, chuck 300 and drill bit 400 to rotate. At this time, the magnetic force between magnetic coupling 101 and magnetic coupling 2028 can make the drill bit 400 continue to rotate. However, the magnetic force between magnetic coupling 101 and magnetic coupling 2028 is relatively limited. This ensures that when the drill bit 400 is locked, the gasoline hand drill main unit 100 will not be subjected to reverse torque and injure the user's hand, thus reducing the occurrence of safety accidents.

[0062] For further details, please refer to [link / reference]. Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown:

[0063] The power cutting unit 200 also includes a second power cutting unit, which includes a recessed groove 2014, a shaft pin 2015, a three-grip turntable 2016, an embedded groove 2017, an arc-shaped permanent magnet 2018, a mounting groove 2019, a winding coil 2020, a curved groove 20161, a push rod 2021, and a clearance groove 2022. The recessed groove 2014 is located in the middle of the side of the drive disc 205 away from the outer end shaft 204, and the shaft pin 2015 is fixed. The three-grip turntable 2016 is rotatably mounted on the outer wall of the shaft pin 2015, with the inner grooves 2017 evenly distributed on the outer wall of the three-grip turntable 2016. The arc-shaped permanent magnet 2018 is fixedly installed inside the inner groove 2017. The mounting slots 2019 are evenly distributed on the inner wall of the sinker 2014, and their positions correspond one-to-one with the arc-shaped permanent magnet 2018. The winding coil 2... 020 is fixedly installed inside the mounting slot 2019. The specifications of the winding coil 2020 are compatible with the specifications of the arc-shaped permanent magnet 2018. The curved slots 20161 are evenly distributed at angles on the outer wall of the three-grip turntable 2016 and are located between two adjacent embedded slots 2017. The push rod 2021 is fixedly installed on the side of the slide bar 208 near the gasoline hand drill main unit 100 and away from the lock head 209. The position of the push rod 2021 corresponds one-to-one with the position of the curved slot 20161. The clearance slots 2022 are evenly distributed at angles on the inner wall of the side of the sinker 2014 near the outer end shaft 204. The position of the clearance slots 2022 corresponds one-to-one with the position of the push rod 2021. The push rod 2021 slides inside the clearance slots 2022. An angle sensor is fixedly installed inside the aluminum alloy housing 201. The mounting slot 2019 and the angle sensor installed inside the aluminum alloy housing 201 are electrically connected.

[0064] Specifically, when the angle at which the user holds this drilling device does not meet the usage standards, the angle sensor inside the aluminum alloy housing 201 (a conventional product, the specific model is not limited, as long as it functions to meet the usage requirements of this drilling device) detects a safety hazard in the operating angle of the gasoline hand drill main unit 100. In this case, the device energizes the winding coil 2020, causing it to generate a magnetic effect. Under the magnetic interaction with the arc-shaped permanent magnet 2018, the three-grip turntable 2016 rotates along the periphery of the shaft pin 2015. The rotation of the three-grip turntable 2016 causes the curved groove 20161 to rotate as well, bringing the inner wall of the curved groove 20161 into contact with the outer wall of the relief groove 2022. This applies a force to the relief groove 2022 towards the center of the shaft pin 2015. The thrust of the slot 2022, after bearing the thrust, applies a thrust in the same direction to the slide bar 208 and the lock head 209. After that, even if the user forcibly starts the gasoline hand drill 100, the drive disc 205 will rotate under the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028. The slide bar 208 cannot slide along the inside of the slide groove 207 by centrifugal force. In other words, the lock head 209 cannot be locked into the inside of the slot 203. At this time, if the user forces the use of this device, it will not be possible to drive the drill bit 400 to rotate and drill a hole in the wall by the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028 alone. This avoids the occurrence of safety accidents caused by the user's improper use and avoids the loss of the employer.

[0065] For further details, please refer to [link / reference]. Figure 7 As shown:

[0066] The second power cutting unit also includes positioning rod three 2023, positioning rod four 2024 and tension spring two 2025. Positioning rod three 2023 is fixedly installed on the inner wall of the sink 2014 near the outer end shaft 204. The position of positioning rod three 2023 corresponds one-to-one with the position of curved groove 20161. Positioning rod four 2024 is fixedly installed on the side of the three-grip turntable 2016 away from the outer end shaft 204 and is located between two adjacent curved grooves 20161. Tension spring two 2025 is fixedly installed between positioning rod three 2023 and positioning rod four 2024.

[0067] Specifically, when the three-grip turntable 2016 rotates along the outer wall of the shaft pin 2015, it will drive the positioning rod 2024 to rotate together, causing the tension spring 2025 to stretch and store force. When the angle sensor inside the aluminum alloy housing 201 detects that the operating angle of the device meets the operating standard, it cuts off the current of the winding coil 2020. The magnetic force between the winding coil 2020 and the arc-shaped permanent magnet 2018 ends. The rebound force of the tension spring 2025 in the stretched state drives the three-grip turntable 2016 to rotate in the opposite direction and reset through the positioning rod 2024, thus contacting the limiting effect on the push rod 2021 to ensure that the slide bar 208 can move freely inside the slide groove 207.

[0068] This invention relates to a drilling device for hydropower station civil construction. During operation, a worker holds a gasoline-powered hand drill 100, aligns the drill bit 400 with the wall surface at the drilling location, and then presses the start switch. This causes the output shaft of the hand drill 100 to drive the magnetic coupling 101 and drive sleeve 202 to rotate. The rotation of the magnetic coupling 101, through magnetic force, drives the magnetic coupling 2028 to rotate. The rotation of the magnetic coupling 2028 further drives the sealing side plate 2026 to rotate via the pivot shaft 2027. Since the sealing side plate 2026 is fixedly connected to the drive disc 205, the rotation of the sealing side plate 2026 causes the drive disc 205, along with the outer end shaft 204, to rotate. The rotation of the positioning rod 2024 then drives the chuck 300 and drill bit 400 to rotate together. At this time, due to the tension between the magnetic coupling 101 and the magnetic coupling 2028... The magnetic force is limited, so relying solely on the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028 to rotate the drill bit 400 is insufficient to drill a hole in the wall. At the same time, the rotation of the drive disc 205 also drives the tension seat 206 and the slide groove 207 to rotate together. Due to the sliding connection between the slide bar 208 and the slide groove 207, the tension seat 206 rotates with the drive disc 205, which in turn drives the slide bar 208 to rotate together, causing the slide bar 208 to generate a centrifugal force effect. This pushes the lock head 209 to move away from the center of the drive disc 205 and engage with the slot 203. At this time, the rotation of the drive sleeve 202 will cause the lock head 209, slide bar 208, tension seat 206 and drive disc 205 to rotate together under the engaging action of the slot 203 and the lock head 209. This, in turn, drives the outer end shaft 204, chuck 300 and drill bit 400 to rotate and drill a hole in the wall.

[0069] In the event of drill bit seizure or the user's hand-held angle not conforming to the standard operating procedure, the power between the output shaft of the gasoline hand drill main unit 100 and the drill bit 400 will be cut off. Specifically:

[0070] When the drill bit suddenly seizes during rotation, the chuck 300, outer end shaft 204, and drive disc 205 stop abruptly. The centrifugal force on the slide bar 208 disappears, and the rebound force of the tension spring 2013, through the connection of the positioning rod 2011, pushes the slide bar 208 along the inner wall of the groove 207 towards the center of the drive disc 205, and moves the locking head 209 along with it, thus disengaging the locking head 209 from the slot 203. After this, the rotation of the drive sleeve 202 can no longer directly affect the rotation of the locking head 209; that is, the drive sleeve 202 cannot pass through the locking head 209. 9. The connecting action of the slide bar 208, tension seat 206, etc. drives the drive disc 205 to rotate, which will not drive the outer end shaft 204, chuck 300 and drill bit 400 to rotate. At this time, the magnetic force between magnetic coupling 101 and magnetic coupling 2028 can make the drill bit 400 continue to rotate. However, the magnetic force between magnetic coupling 101 and magnetic coupling 2028 is relatively limited. This ensures that when the drill bit 400 is locked, the gasoline hand drill host 100 will not be subjected to reverse torque and injure the user's hand, thus reducing the occurrence of safety accidents.

[0071] When the angle at which the user holds this drilling device does not meet the usage standards, the angle sensor inside the aluminum alloy housing 201 (a standard product, the specific model is not limited, as long as it functions to meet the usage requirements of this drilling device) detects a safety hazard in the operating angle of the gasoline hand drill 100. In this case, the device energizes the winding coil 2020, causing it to become magnetic. Under the magnetic interaction with the arc-shaped permanent magnet 2018, the three-grip turntable 2016 rotates along the periphery of the shaft pin 2015. The rotation of the three-grip turntable 2016 causes the curved groove 20161 to rotate as well, bringing the inner wall of the curved groove 20161 into contact with the outer wall of the relief groove 2022. This applies a pushing force towards the center of the shaft pin 2015 to the relief groove 2022. Under the action of force, the groove 2022, after bearing the thrust, applies a thrust in the same direction to the slide bar 208 and the locking head 209. After that, even if the user forcibly starts the gasoline hand drill 100, the drive disc 205 will rotate under the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028. The slide bar 208 cannot slide along the inside of the slide groove 207 by centrifugal force. In other words, the locking head 209 cannot be locked into the inside of the slot 203. At this time, if the user forces the use of this device, it will not be possible to drive the drill bit 400 to rotate and drill a hole in the wall by the magnetic force between the magnetic coupling 101 and the magnetic coupling 2028 alone. This avoids the occurrence of safety accidents caused by the user's improper use and avoids losses to the employer.

[0072] 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 variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A drilling device for civil construction of a hydropower station, characterized in that: include: A gasoline hand drill main unit (100) and a power cutting unit (200), wherein the power cutting unit (200) is fixedly installed on the output end of the gasoline hand drill main unit (100); A chuck (300) is fixedly installed on the output end of the power cutting unit (200); The drill bit (400) is fixedly installed at the end of the chuck (300) away from the power cutting unit (200); The power cut-off unit (200) includes a power cut-off unit one, which includes: The aluminum alloy housing (201) is fixedly connected to the output end housing of the gasoline hand drill main unit (100) by bolts; The drive sleeve (202) is fixedly installed on the outer wall of the output shaft of the gasoline hand drill main unit (100); The card slots (203) are evenly distributed on the inner wall of the drive sleeve (202); The outer end shaft (204) is rotatably mounted on the end of the aluminum alloy housing (201) away from the gasoline hand drill main unit (100) and extends through the inside and outside of the aluminum alloy housing (201); The drive disc (205) is fixedly installed on one end of the outer end shaft (204) near the gasoline hand drill main body (100) and is located inside the drive sleeve (202); The tensioning seat (206) is fixedly installed at equal angles on the side of the drive plate (205) away from the gasoline hand drill main unit (100); A groove (207) is formed on the side of the tensioner (206) near the drive disc (205); The slide bar (208) is slidably installed inside the slide groove (207); A lock head (209) is fixedly installed on one end of the slide bar (208) near the inner wall of the drive sleeve (202), and the specifications of the lock head (209) are compatible with the specifications of the slot (203); The power cut-off unit one also includes: A strip groove (2010) is formed through one side of the tensioning seat (206) away from the drive disc (205), and the interior of the strip groove (2010) is connected to the interior of the slide groove (207); Positioning rod 1 (2011) is fixedly installed on the side of the slide bar (208) away from the drive plate (205) and slides through the inside of the strip groove (2010); Positioning rod 2 (2012) is fixedly installed on the side of tensioning seat (206) away from slide bar (208), and tension spring 1 (2013) is fixedly installed between positioning rod 1 (2011) and positioning rod 2 (2012). The positions of tension spring 1 (2013) and positioning rod 1 (2011) are adapted to the opening trajectory direction of slide groove (207). The outer end shaft (204) is coaxial with the drive disk (205), the drive disk (205) is coaxial with the drive sleeve (202), the drive sleeve (202) is coaxial with the output shaft of the gasoline hand drill main unit (100), a magnetic coupling one (101) is fixedly installed at the output shaft end of the gasoline hand drill main unit (100), a sealing side plate (2026) is fixedly installed on the side of the drive disk (205) away from the outer end shaft (204), a pivot shaft (2027) is fixedly installed in the middle of the side of the sealing side plate (2026) close to the gasoline hand drill main unit (100), a magnetic coupling two (2028) is fixedly installed at the end of the pivot shaft (2027) away from the sealing side plate (2026), and the magnetic coupling two (2028) is compatible with the magnetic coupling one (101); A chuck (300) is fixedly installed at the output end of the outer end shaft (204), and a drill bit (400) is fixedly installed inside the chuck (300).

2. The drilling device for hydropower station civil construction according to claim 1, characterized in that: The power cutting unit (200) further includes a second power cutting unit, which includes: A groove (2014) is formed in the middle of one side of the drive disc (205) away from the outer end shaft (204); A shaft pin (2015) is fixedly installed on the inner wall of the settling tank (2014) near the outer end shaft (204) in the middle part; The three-grip turntable (2016) is rotatably mounted on the outer wall of the shaft pin (2015); Embedded grooves (2017) are evenly distributed on the outer wall of the three-grip turntable (2016); An arc-shaped permanent magnet (2018) is fixedly installed inside an embedded groove (2017); The placement grooves (2019) are equally spaced on the inner wall of the settling tank (2014), and their positions correspond one-to-one with the arc-shaped permanent magnets (2018); The winding coil (2020) is fixedly installed inside the mounting slot (2019), and the specifications of the winding coil (2020) are compatible with the specifications of the arc-shaped permanent magnet (2018).

3. The drilling device for hydropower station civil construction according to claim 2, characterized in that: The second power cut-off unit also includes: Curved grooves (20161) are equally spaced on the outer wall of the three-grip turntable (2016) and located between two adjacent embedded grooves (2017); The push rod (2021) is fixedly installed on one side of the slide bar (208) near the gasoline hand drill main unit (100) and away from the lock head (209). The position of the push rod (2021) corresponds one-to-one with the position of the curved groove (20161).

4. The drilling device for hydropower station civil construction according to claim 3, characterized in that: The second power cut-off unit also includes: The clearance groove (2022) is equally distributed on the inner wall of the side of the sinker (2014) near the outer end shaft (204). The position of the clearance groove (2022) corresponds one-to-one with the position of the push rod (2021). The push rod (2021) slides inside the clearance groove (2022).

5. The drilling device for hydropower station civil construction according to claim 4, characterized in that: The second power cut-off unit also includes: Positioning rod three (2023) is fixedly installed on the inner wall of the sink (2014) near the outer end shaft (204), and the position of positioning rod three (2023) corresponds one-to-one with the position of curved groove (20161); Positioning rod four (2024) is fixedly installed on the side of the three-grip turntable (2016) away from the outer end shaft (204) and located between two adjacent curved grooves (20161); Tension spring 2 (2025) is fixedly installed between positioning rod 3 (2023) and positioning rod 4 (2024).

6. The drilling device for hydropower station civil construction according to claim 5, characterized in that: An angle sensor is fixedly installed inside the aluminum alloy housing (201), and the mounting groove (2019) is electrically connected to the angle sensor installed inside the aluminum alloy housing (201).

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