Drilling device with protective structure

Abstract

The invention belongs to the technical field of drilling, and discloses a drilling device with a protection structure, which comprises a drilling platform, a protection mechanism and a positioning mechanism, the drilling platform is fixedly connected to a telescopic column, a driving part is fixedly connected to the top of the telescopic column, the output end of the driving part is in transmission connection with a drill bit, the protection mechanism is positioned on the driving part, and the positioning mechanism is arranged on the drilling platform. The positioning mechanism is connected with the protection mechanism, through cooperation of an outer cover, a movable ring block, a partition net and other structures, the outer cover makes contact with the surface of a workpiece firstly, the position is kept unchanged after contact, during drilling, the movable ring block moves downwards to drive the partition net to be bent and folded, a baffle ring is in an inclined state, the partition net is blocked and limited in an arc shape, and the workpiece is protected. Meanwhile, the adsorption part adsorbs generated dust and oil mist, pollution to the working environment is reduced, compared with a traditional elastic telescopic protective cover, the optimized outer cover and the partition net are arranged, the moving stability of the drill bit can be effectively improved, and drill bit deviation is avoided.

Description

Technical Field

[0001] This invention belongs to the field of drilling technology, specifically a drilling device with a protective structure. Background Technology

[0002] As a basic processing equipment, the safety protection of drilling equipment is directly related to the personal safety of operators and the processing accuracy. The protective device mainly protects against mechanical damage and environmental hazards, such as blocking metal shavings from splashing and preventing the spread of dust and oil mist.

[0003] A drilling protection device for mold production, disclosed in prior art document CN114714135B, includes a base cover and a dust cover detachably mounted on the top side of the base cover. The dust cover is a tower-shaped hollow rubber structure that runs vertically through the base. A positioning ring is provided at the opening on the top side of the dust cover. A vertically extending rotating shaft is provided on one side of the outer side of the dust cover, and a support frame for supporting the rotation of the rotating shaft is fixed on the outer side of the base cover. A cleaning ring is rotatably mounted inside the base cover. A side rod is horizontally connected to the positioning ring near the rotating shaft. A longitudinally extending rectangular guide frame is fixed at the end of the side rod. A vertically extending spiral blade is fixed at the top of the rotating shaft. The advantages are: by setting a dust cover on the outside of the drill bit for drilling in the mold, and setting a cleaning ring that automatically rotates with the drilling process outside the dust cover of the traditional protective structure, the drill bit area is cleaned by the brush bristles on the inner side of the cleaning ring, maintaining the smoothness of drilling, and the device is highly practical.

[0004] While the aforementioned application cleans the drill bit area using the inner bristles of the cleaning ring to maintain smooth drilling, it does not improve the protective capability of the dust cover. Especially when drilling deep holes, the dust cover cannot penetrate the hole with the drill bit, causing chips to fly when the drill bit is retracted. Although a telescopic sleeve can be made using the elasticity of a spring, the spring's rebound force increases as the drill bit penetrates deeper, which can easily cause radial vibration of the drill bit, leading to deflection and increasing the probability of drill bit breakage. Furthermore, the chips accumulated in the deep hole are carried out and flung away when the drill bit is retracted, while the spring sleeve has a slight lag in retraction, resulting in it not being able to cover the jetting path. Summary of the Invention

[0005] To address the problems mentioned in the background art, such as the tendency of the telescopic sheath to cause radial vibration of the drill bit leading to deflection and failure to cover the injection path, the present invention provides a drilling device with a protective structure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling device with a protective structure, comprising a drilling platform fixedly connected to a telescopic column, a driving component fixedly connected to the top of the telescopic column, and a drill bit connected to the output end of the driving component; and further comprising:

[0007] The protective mechanism is located on the drive component;

[0008] A positioning mechanism, which is connected to a protective mechanism;

[0009] The protective mechanism includes an outer cover slidably connected to the outside of the drive component, with the drill bit located inside the outer cover. The outer cover has an opening slot on the side near the telescopic column, and the opening slot is blocked by a mesh. After drilling is completed, large particles of cuttings fly out of the drill bit slot in a spiral shape. The outer cover prevents them from splashing to the outside and injuring workers. At the same time, the concentration inside the outer cover facilitates cleaning. Large particles of cuttings at the opening slot can also be blocked by the mesh. Furthermore, during the drill bit extraction process, the adsorption component continuously adsorbs small dust particles.

[0010] Preferably, a movable ring block is slidably connected to the inner cavity of the outer cover, and the inner cavity of the movable ring block is fixed to the top of the partition net. An adsorption element is provided on the outer side of the middle part of the partition net, and the adsorption element is fixed to the driving element. During the drill bit extraction process, large particles of cuttings that splash to the opening slot can be blocked by the partition net, and the adsorption element continuously adsorbs small particles of dust. Therefore, when the drill bit is completely extracted, only large particles of cuttings remain inside the outer cover. At this time, the driving element continues to move upward, and the slider moves the entire outer cover upward to expose the workpiece. No dust diffuses outward, and the worker can directly remove the workpiece, improving work efficiency while avoiding the worker's long-term inhalation of dust and the resulting illness.

[0011] Preferably, both ends of the movable ring block are fixedly connected to a fixing plate, and a pair of fixing plates are rotatably connected to a retaining ring, which abuts against the partition net. When the movable ring block moves down, it can cause the partition net to bend and fold. At this time, the retaining ring abuts against the limiting baffle, so that the retaining ring is in an inclined state, which creates an arc-shaped barrier to limit the partition net, preventing the partition net from bending and getting close to the drill bit, and being caught in it, causing a malfunction.

[0012] Preferably, a limiting baffle is fixedly connected to the bottom of the fixed plate, the retaining ring abuts against the limiting baffle, and a sponge brush is fixedly connected to the bottom of the movable ring block on the side away from the partition net, the sponge brush abutting against the inner cavity of the outer cover.

[0013] Preferably, a double-layer rubber ring is fixedly connected to the bottom of the outer cover, and vertical grooves are provided on both sides of the inner cavity of the outer cover. A slider is slidably connected in the vertical groove, and the end of the slider is fixedly connected to the driving component.

[0014] Preferably, a first rack is fixedly connected to the outside of the drive component, and a pair of T-shaped plates are fixedly connected to the top of the outer cover. Gears are rotatably connected to the inner sides of the pair of T-shaped plates. The drill bit continuously penetrates the workpiece to perform drilling operations until it is completely submerged in the workpiece. At this time, the sponge brush at the bottom of the moving ring block abuts against the workpiece, and the retaining ring is squeezed and rotated, abutting against the surface of the workpiece, without obstructing the drilling. During the drilling process, the dust and oil mist generated can be adsorbed by the adsorption component, reducing the pollution of the working environment. Moreover, compared with the elastic telescopic protective cover, the optimized outer cover can effectively improve the stability of the device and prevent drill bit deviation.

[0015] Preferably, one side of the gear meshes with a first rack, and the other side of the gear meshes with a second rack.

[0016] Preferably, a push-pull rod is fixedly connected to the side wall of the second rack, and a sleeve slides through the outer wall of the push-pull rod; when the drill bit is drilling, the outer cover abuts against the workpiece surface through the bottom double-layer rubber ring, and the first rack moves downward through the driving component, thereby engaging the gear to rotate, which drives the second rack to move upward, and the push-pull rod moves upward synchronously through the second rack, and the rubber plug also moves upward, drawing out the gas in the lower vent pipe and the air in the inner cavity of the double-layer rubber ring, so that the outer cover fits tightly against the workpiece surface and prevents drilling dust from overflowing.

[0017] Preferably, the bottom of the housing is slidably connected to the inner cavity of the housing via a rubber plug, and a vent pipe is fixedly connected to the bottom of the housing, which is fixedly attached to the outer cover. After drilling is completed, the drill bit is pulled out mostly upwards, and the chips and dust are basically discharged. At this time, the first rack meshes with the gear from below and drives it to rotate, causing the second rack to move downwards, pushing the push-pull rod downwards, causing the rubber plug to move downwards as well, injecting air into the inner cavity of the vent pipe and the double-layer rubber ring, so that the outer cover is finally smoothly moved upwards.

[0018] Preferably, the vent pipe is located above the double-layer rubber ring and is fixedly connected to the inner cavity of the double-layer rubber ring; when the rubber plug moves upward inside the sleeve, the air in the inner cavity of the double-layer rubber ring can be extracted, so that the outer cover fits tightly against the surface of the workpiece and prevents drilling dust from overflowing.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention, through the combination of an outer cover, a movable ring block, and a partition net, allows the outer cover to first contact the workpiece surface and maintain its position after contact. During drilling, the movable ring block moves downward, causing the partition net to bend and fold. The retaining ring is in an inclined state, creating an arc-shaped obstruction and limiting the partition net. At the same time, the adsorption component adsorbs the generated dust and oil mist, reducing pollution in the working environment. Compared with traditional elastic telescopic protective covers, the optimized outer cover and partition net configuration can effectively improve the stability of drill bit movement and prevent drill bit deviation.

[0021] After drilling is complete, large chips fly out of the drill bit slot in a spiral shape. The outer casing prevents them from splashing out and injuring workers, and the concentrating of chips inside the casing also facilitates cleaning. Large chips at the opening slot are also blocked by a mesh screen. Furthermore, during drill bit extraction, the suction unit continuously absorbs small dust particles, and the sponge brush cleans the inner cavity of the outer casing in real time. This prevents multiple layers of chips from adhering together during continuous drilling, which reduces light transmittance and increases the processing error rate.

[0022] This invention, through the combination of vent pipes and double-layer rubber rings, facilitates the tight fit of the outer cover to the workpiece surface during drilling, preventing drilling dust from spilling out. Utilizing the interaction of the first rack, second rack, and gears, the rubber plug can move up and down within the housing during drill bit lifting and lowering. Combined with the vent pipes, this creates a negative pressure adsorption and locking effect between the double-layer rubber rings and the workpiece surface, enhancing the outer cover's anti-splash capability. Furthermore, it automatically releases the lock after dust adsorption is complete, preventing situations where the outer cover cannot cover the spray path. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the side cross-section structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle;

[0027] Figure 5 This is a schematic diagram showing the structural fit between the outer cover and the partition net of the present invention;

[0028] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 7 This is a schematic diagram showing the structural fit between the outer cover and the vent pipe of the present invention;

[0030] Figure 8 This is a schematic diagram showing the structural fit between the fixed plate and the movable ring block of the present invention;

[0031] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point C in the middle;

[0032] Figure 10 This is a schematic diagram showing the structural fit between the fixing plate and the limiting baffle of the present invention.

[0033] In the picture:

[0034] 1. Drilling platform; 2. Telescopic column; 3. Drive component; 4. Protective mechanism; 401. Outer cover; 402. Double-layer rubber ring; 403. Partition net; 404. Moving ring block; 405. Adsorption component; 406. Vertical groove; 407. Slider; 408. Retaining ring; 409. Sponge brush; 4010. Fixing plate; 4011. Limiting baffle; 5. Positioning mechanism; 501. Gear; 502. First rack; 503. T-shaped plate; 504. Second rack; 505. Push-pull rod; 506. Sleeve box; 507. Rubber plug; 508. Vent pipe; 6. Drill bit. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0036] like Figures 1 to 10 As shown, the present invention provides a drilling device with a protective structure, including a drilling platform 1, which is fixedly connected to a telescopic column 2. A driving component 3 is fixedly connected to the top of the telescopic column 2, and a drill bit 6 is drivenly connected to the output end of the driving component 3. The device also includes:

[0037] Protective mechanism 4 is located on drive component 3;

[0038] Positioning mechanism 5 is connected to protective mechanism 4;

[0039] The protective mechanism 4 includes an outer cover 401 that is slidably connected to the outside of the drive component 3, and the drill bit 6 is located inside the outer cover 401. The outer cover 401 has an opening slot on the side near the telescopic column 2, and the opening slot is blocked by a mesh 403.

[0040] The above-mentioned solution employs a drive unit 3, which includes a motor, transmission wheels, a belt, and a housing. The motor drives the transmission wheels, and a pair of transmission wheels rotate via a belt, ultimately causing the drill bit 6 to rotate. The drill bit 6 penetrates the housing and extends into the outer cover 401, protecting the drilling area and preventing chip splashing. Before drilling, the workpiece is placed on the drilling platform 1. The drive unit 3 rotates the drill bit 6, and the compression telescopic column 2 causes the drill bit 6 and the drive unit 3 to move downwards as a whole, aligning with the workpiece for drilling. The outer cover 401 first contacts the workpiece surface and then remains in position, improving the stability of the drilling process.

[0041] like Figures 3 to 6As shown, a movable ring block 404 is slidably connected to the inner cavity of the outer cover 401. The inner cavity of the movable ring block 404 is fixed to the top of the partition net 403. An adsorption member 405 is provided on the outer side of the middle part of the partition net 403. The adsorption member 405 is fixed to the driving member 3. Fixed plates 4010 are fixed to both ends of the movable ring block 404. A pair of fixed plates 4010 are rotatably connected to a retaining ring 408. The retaining ring 408 abuts against the partition net 403.

[0042] like Figure 2 , Figures 7 to 10 As shown, a limiting baffle 4011 is fixedly connected to the bottom of the fixed plate 4010, and a retaining ring 408 abuts against the limiting baffle 4011. A sponge brush 409 is fixedly connected to the bottom of the movable ring block 404 on the side away from the partition net 403, and the sponge brush 409 abuts against the inner cavity of the outer cover 401. A double-layer rubber ring 402 is fixedly connected to the bottom of the outer cover 401, and vertical grooves 406 are opened on both sides of the inner cavity of the outer cover 401. A slider 407 is slidably connected in the vertical groove 406, and the end of the slider 407 is fixedly connected to the driving member 3.

[0043] The above solution employs an adsorption component 405, which mainly includes a pipe, adsorption head, mounting ring, and external pump unit. The pump unit draws in dust and oil mist, and the dust and oil mist generated during drilling passes through the mesh 403 and is discharged from the adsorption component 405 into the pipe, effectively preventing environmental pollution. When the drill bit 6 moves downwards to drill, the moving ring block 404 on the drive component 3 moves downwards synchronously and is limited in the vertical groove 406 by sliding the slider 407. The downward movement of the moving ring block 404 causes the mesh 403 to bend and fold. At this time, the retaining ring 408 abuts against the limiting baffle 4011, causing the retaining ring 408 to be in an inclined state, creating an arc-shaped obstruction and limiting the mesh 403, preventing the mesh 403 from bending close to the drill bit 6 and being caught in it, causing a malfunction. The drill bit 6 continues to penetrate the workpiece to perform drilling operations until the drill bit 6 is completely submerged in the workpiece. At this time, the sponge brush 409 at the bottom of the moving ring block 404 comes into contact with the workpiece, and the retaining ring 408 is squeezed and rotated, coming into contact with the surface of the workpiece, without obstructing the drilling of the drill bit 6.

[0044] After drilling is completed, drill bit 6 moves vertically upwards to remove the workpiece. At this time, large chips wrapped in the spiral chip removal groove of drill bit 6 are thrown out at high speed in a spiral shape due to centrifugal force, enough to penetrate human skin. The closed structure of outer cover 401 forms the first physical barrier, confining more than 95% of the splashing chips within its internal space. At the same time, the stainless steel mesh 403 located at the lateral opening slot of outer cover 401 serves as a secondary protection, accurately intercepting residual chips attempting to escape from the opening, with an interception efficiency of 99.2%. During the continuous extraction of drill bit 6, the suction component 405 integrated into the top of outer cover 401 is activated simultaneously. When drill bit 6 is completely detached from the workpiece, only the intercepted large chips remain inside outer cover 401. At this point, the risk of dust diffusion is completely eliminated, and the operator can safely open outer cover 401 directly and remove the workpiece. Compared to the traditional open-hole drilling process that requires shutdown for dust removal, this design significantly shortens the workpiece changeover interval, improves production efficiency, and effectively eliminates occupational health risks such as silicosis and metal dust allergies.

[0045] like Figures 2 to 6 As shown, a first rack 502 is fixedly connected to the outside of the drive component 3, and a pair of T-shaped plates 503 are fixedly connected to the top of the outer cover 401. A gear 501 is rotatably connected to the inner side of the pair of T-shaped plates 503. One side of the gear 501 meshes with the first rack 502, and the other side of the gear 501 meshes with a second rack 504. A push-pull rod 505 is fixedly connected to the side wall of the second rack 504, and a sleeve 506 slides through the outer wall of the push-pull rod 505.

[0046] like Figure 3 and Figure 6 As shown, the bottom of the sleeve 506 is slidably connected to the inner cavity of the sleeve 506 via a rubber stopper 507. A vent pipe 508 is fixedly connected to the bottom of the sleeve 506 and is fixedly attached to the outer cover 401. The vent pipe 508 is located above the double-layer rubber ring 402 and is fixedly connected to the inner cavity of the double-layer rubber ring 402.

[0047] Using the above solution: During drilling, the outer cover 401 abuts against the workpiece surface via the bottom double-layer rubber ring 402. The driving component 3 drives the first rack 502 to move downward, thereby engaging the gear 501 to rotate, which in turn drives the second rack 504 to move upward. The second rack 504 then drives the push-pull rod 505 to move upward simultaneously, and the rubber plug 507 also moves upward, drawing out the gas from the lower vent pipe 508. Since the vent pipe 508 is located above the double-layer rubber ring 402 and is fixedly connected to the inner cavity of the double-layer rubber ring 402, the air inside the double-layer rubber ring 402 can be drawn out, allowing the outer cover 401 to fit tightly against the workpiece surface and preventing drilling dust from escaping. After drilling is completed, the drill bit 6 is pulled out to the top, and the chips and dust are basically discharged. Similarly, but in reverse, the first rack 502 meshes with the gear 501 from below, and finally air is injected into the vent pipe 508 and the inner cavity of the double rubber ring 402, so that the outer cover 401 is finally driven to move upward smoothly, exposing the workpiece after drilling.

[0048] Based on the working principle and usage process of this invention:

[0049] First, the workpiece is placed on the drilling platform 1. The drive unit 3 drives the drill bit 6 to rotate. By compressing the telescopic column 2, the drill bit 6 and the drive unit 3 move downwards as a whole, aligning with the workpiece for drilling. The outer cover 401 first contacts the workpiece surface and remains in position after contact. As the drill bit 6 continues to move downwards, the moving ring block 404 on the drive unit 3 moves downwards synchronously and is limited in the vertical groove 406 by sliding the slider 407. The downward movement of the moving ring block 404 can cause the partition net 403 to bend and fold. At this time, the retaining ring 408 abuts against the limiting baffle 4011, so that the retaining ring 408 is in an inclined state, creating an arc-shaped barrier to limit the partition net 403, preventing the partition net 403 from bending close to the drill bit 6 and being caught in it, causing a malfunction. The drill bit 6 continuously penetrates the workpiece to perform drilling operations until it is completely submerged. At this point, the sponge brush 409 at the bottom of the moving ring block 404 comes into contact with the workpiece, while the retaining ring 408 is squeezed and rotated, resting against the workpiece surface without obstructing the drilling of the drill bit 6. During the drilling process, the dust and oil mist generated can be absorbed by the adsorption component 405, reducing pollution in the working environment. Furthermore, compared to the elastic telescopic protective cover, the optimized outer cover 401 can effectively improve the stability of the device and prevent the drill bit 6 from shifting.

[0050] Secondly, after drilling is completed, the drill bit 6 is moved upwards and pulled out. Large chips fly out of the slot of the drill bit 6 in a spiral shape. The outer cover 401 blocks them, preventing them from splashing to the outside and injuring workers. At the same time, the chips are concentrated inside the outer cover 401, which also facilitates cleaning. Large chips at the opening slot can also be blocked by the mesh 403. During the extraction of the drill bit 6, the adsorption component 405 continuously adsorbs small dust particles. Therefore, when the drill bit 6 is completely extracted, only large chips remain inside the outer cover 401. At this time, the drive component 3 continues to move upwards, and the slider 407 moves the outer cover 401 upwards to expose the workpiece. No dust spreads outwards, and workers can directly remove the workpiece, improving work efficiency while avoiding the long-term inhalation of dust by workers, which can lead to illness.

[0051] Finally, as the drill bit 6 moves downwards, the outer cover 401 abuts against the workpiece surface via the bottom double-layer rubber ring 402. The drive component 3 drives the first rack 502 downwards, which in turn rotates the gear 501, causing it to drive the second rack 504 upwards. The second rack 504 then moves the push-pull rod 505 upwards simultaneously, and the rubber plug 507 also moves upwards, drawing out the gas from the lower vent pipe 508. Since the vent pipe 508 is located above the double-layer rubber ring 402 and is fixedly connected to its inner cavity, the upward movement of the rubber plug 507 within the housing 506 draws out the air from the inner cavity of the double-layer rubber ring 402, ensuring the outer cover 401 fits tightly against the workpiece surface and preventing drilling dust from escaping. After the gear 501 passes the first rack 502, the push-pull rod 505 maintains its current position under the abutment of the rubber plug 507. After drilling is completed, the drill bit 6 is pulled out to the top, and the chips and dust are basically discharged. At this time, the first rack 502 meshes with the gear 501 from below and drives it to rotate, causing the second rack 504 to move downward, pushing the push rod 505 downward, causing the rubber plug 507 to also move downward, injecting air into the vent pipe 508 and the inner cavity of the double-layer rubber ring 402, so that the outer cover 401 is finally smoothly driven upward.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] 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 with a protective structure, comprising a drilling platform (1), the drilling platform (1) being fixedly connected to a telescopic column (2), a driving member (3) being fixedly connected to the top of the telescopic column (2), and a drill bit (6) being drivenly connected to the output end of the driving member (3), characterized in that: Also includes: Protective mechanism (4), which is located on the drive member (3); Positioning mechanism (5), which is connected to protective mechanism (4); The protective mechanism (4) includes an outer cover (401) slidably connected to the outside of the drive member (3), and the drill bit (6) is located inside the outer cover (401). The outer cover (401) has an opening slot on the side near the telescopic column (2), and the opening slot is blocked by a mesh (403).

2. The drilling device with a protective structure according to claim 1, characterized in that: The inner cavity of the outer cover (401) is slidably connected to a movable ring block (404), the inner cavity of the movable ring block (404) is fixed to the top of the partition net (403), and an adsorption member (405) is provided on the outer side of the middle part of the partition net (403), and the adsorption member (405) is fixed to the driving member (3).

3. The drilling device with a protective structure according to claim 2, characterized in that: Both ends of the movable ring block (404) are fixedly connected to a fixing plate (4010), and a pair of fixing plates (4010) are rotatably connected to a retaining ring (408), which abuts against the partition net (403).

4. The drilling device with a protective structure according to claim 3, characterized in that: The bottom of the fixed plate (4010) is fixedly connected to a limiting baffle (4011), the retaining ring (408) abuts against the limiting baffle (4011), and a sponge brush (409) is fixedly connected to the side of the bottom of the movable ring block (404) away from the partition net (403), and the sponge brush (409) abuts against the inner cavity of the outer cover (401).

5. The drilling device with a protective structure according to claim 4, characterized in that: The bottom of the outer cover (401) is fixed with a double-layer rubber ring (402). Vertical grooves (406) are provided on both sides of the inner cavity of the outer cover (401). A slider (407) is slidably connected in the vertical groove (406). The end of the slider (407) is fixed to the drive member (3).

6. The drilling device with a protective structure according to claim 5, characterized in that: The drive unit (3) is also fixedly connected to the outside of a first rack (502), and a pair of T-shaped plates (503) are fixedly connected to the top of the outer cover (401). Gears (501) are rotatably connected to the inner side of the pair of T-shaped plates (503).

7. The drilling device with a protective structure according to claim 6, characterized in that: One side of the gear (501) meshes with the first rack (502), and the other side of the gear (501) meshes with the second rack (504).

8. The drilling device with a protective structure according to claim 7, characterized in that: A push-pull rod (505) is fixedly connected to the side wall of the second rack (504), and a sleeve (506) slides through the outer wall of the push-pull rod (505).

9. The drilling device with a protective structure according to claim 8, characterized in that: The bottom of the sleeve (506) is slidably connected to the inner cavity of the sleeve (506) by a rubber stopper (507), and a vent pipe (508) is fixedly connected to the bottom of the sleeve (506), and the vent pipe (508) is fixedly connected to the outer cover (401).

10. The drilling device with a protective structure according to claim 9, characterized in that: The vent pipe (508) is located above the double-layer rubber ring (402) and is fixedly connected to the inner cavity of the double-layer rubber ring (402).

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