Suspended ceiling drilling equipment for indoor decoration

Abstract

The invention relates to the technical field of indoor decoration, in particular to ceiling drilling equipment for indoor decoration, which comprises a first drill bit, a second drill bit, a third drill bit, a fourth drill bit, a fifth drill bit and a sixth drill bit, the second drill bit is connected with the first drill bit, a damping groove is formed in the joint of the second drill bit and the first drill bit, and the damping rod penetrates through the damping groove and is fixed to the damping groove; the damping structure comprises a plurality of rubber rings arranged on the outer side of the damping rod in a sleeving mode, the inner wall of the damping groove is provided with embedding grooves allowing the rubber rings to be embedded therein, and gaps between the embedding grooves and the damping rod are filled with the rubber rings; the drill bit body protrudes out of a notch of the damping groove, and the outward extending length of the drill bit body protruding out of the notch of the damping groove is smaller than the diameter of the section of the second drill bit. The sectional area of the second drill bit is larger than that of the drill bit body, and the effects of reducing drill bit vibration impact force and reducing the damage strength of the drill bit to a wall during inclined hole drilling are achieved.

Description

Technical Field

[0001] This invention relates to the field of interior decoration technology, and in particular to a ceiling drilling device for interior decoration. Background Technology

[0002] Interior decoration requires drilling holes in the ceiling for installing curtain walls or ceiling panels. Some special curtain walls require drilling angled holes to facilitate the fixing of concrete to the fixing bolts used to fix the curtain wall.

[0003] When drilling angled holes in the concrete of a suspended ceiling, the lateral shear force accounts for 30%-40% due to the lack of precise control of the drill bit's entry angle, causing the concrete cracks to expand. Actual measurements show that the area of ​​chipped edges at the hole opening increases significantly. Therefore, in the process of drilling angled holes in suspended ceilings, traditional ceiling drilling equipment drill bits are prone to causing hole wall cracking and wall damage due to excessive lateral force, thus compromising the structural strength of the wall. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the drill bit cutting angle is not precisely controlled, which causes damage to the structural strength of the wall when drilling at an angle. The present invention provides a ceiling drilling device for interior decoration, which reduces the vibration and impact force of the drill bit and reduces the damage to the wall caused by the drill bit when drilling at an angle.

[0005] To solve the above-mentioned technical problems, the present invention provides a ceiling drilling device for interior decoration, characterized in that it includes: The first drill bit includes a drill bit body at the front end and a shock absorber rod at the rear end; The second drill bit is connected to the first drill bit, and a shock-absorbing groove is provided at the connection between the two. The shock-absorbing rod passes through the shock-absorbing groove and is fixed thereto. The shock-absorbing structure includes several rubber rings sleeved on the outside of the shock-absorbing rod, and the inner wall of the shock-absorbing groove is provided with a groove for the rubber rings to be inserted, and the rubber rings fill the gap between the groove and the shock-absorbing rod; The drill bit body protrudes from the opening of the damping groove, and the outward extension length of the drill bit protruding from the opening of the damping groove is less than the cross-sectional diameter of the second drill bit; the cross-sectional area of ​​the second drill bit is greater than the cross-sectional area of ​​the drill bit body.

[0006] In one embodiment of the present invention, the rubber ring includes a buffer portion and a support portion, the buffer portion being close to the groove and the support portion being close to the shock absorber rod, and the buffer portion having a buffer cavity formed within the rubber ring.

[0007] In one embodiment of the present invention, the buffer cavity is filled with magnetorheological fluid.

[0008] In one embodiment of the present invention, a plurality of hemispherical protrusions are provided on the inner surface of the support portion that is in contact with the shock absorber rod.

[0009] In one embodiment of the present invention, both the first drill bit and the second drill bit have helical grooves on their side surfaces, and the angle of the helix at the outer end of the helical groove is greater than the angle of the helix at the inner end of the helical groove.

[0010] In one embodiment of the present invention, an arc-shaped back face is fixed on the drill bit body, and a planar back face is fixed between the second drill bit and the drill bit body.

[0011] In one embodiment of the present invention, the width of the planar back face is in the range of 0.8-1.2 mm.

[0012] In one embodiment of the present invention, the device further includes, A support structure for supporting the second drill bit, wherein a drive source for driving the first drill bit and the second drill bit to rotate is fixed on one side of the support structure; An angle offset structure is used to change the drilling orientation of the first drill bit and the second drill bit toward the target area; The angle offset structure includes, Offset drive source; An offset link passes through the support structure. An eccentric component is fixed between the power output shaft of the offset drive source and the offset link. When the output shaft of the offset drive source rotates, the offset link drives the support structure to rotate synchronously.

[0013] In one embodiment of the present invention, the device further includes, A base for supporting the angular offset structure, wherein a cushioning rubber block is provided on the base.

[0014] In one embodiment of the present invention, the support structure further includes, A telescopic assembly, which is fixed to the end of the second drill bit; A telescopic cylinder is fixed to one side of the support structure, and a telescopic slide rod is fixed to one side of the telescopic cylinder. The telescopic assembly and the telescopic slide rod are slidably connected, and the piston rod of the telescopic cylinder is fixed to the telescopic assembly.

[0015] Compared with the prior art, the above-described technical solution of the present invention has the following advantages: The ceiling installation device for interior decoration described in this invention is equipped with a first drill bit and a second drill bit arranged in a stepped manner. The second drill bit absorbs energy through a rubber ring inside. When drilling at an angle, the vibration damage intensity of the drill bit tip to the wall surface can be reduced, thereby reducing the degree of damage to the wall surface caused by drilling at an angle.

[0016] The first and second drill bits have different cross-sectional areas, with the first drill bit having a smaller cross-sectional area than the second drill bit, forming a stepped drill bit. This is used to pre-drill a guide hole before drilling the inclined hole. During the inclined hole drilling process, the first drill bit first contacts the wall surface to drill. By making the length of the first drill bit much smaller than the length of the second drill bit, the first drill bit pre-drills a guide hole in the wall surface before the second drill bit drills the main body of the inclined hole. After drilling the guide hole first, the inner wall of the guide hole can be used to form a fulcrum for drilling the inclined hole. This prevents the drill bit from shaking significantly on the unsupported wall surface due to vibration, thus avoiding drilling an inclined hole with a diameter greater than expected. This reduces the damage to the structural strength of the wall from the perspective of the area of ​​damage to the wall. Secondly, a rubber ring is installed inside the second drill bit to absorb energy. The vibration energy generated by the second drill bit is absorbed by the rubber ring, and the vibration energy transmitted to the first drill bit is greatly reduced. During drilling, since the second drill bit drives the first drill bit to rotate synchronously, the impact force of the first drill bit in the inclined hole length direction will not change when the rotation speed of the second drill bit remains unchanged. However, the impact force on the inclined hole wall caused by vibration energy will be absorbed and reduced by the rubber ring. As a result, when the first drill bit makes a hole, the degree of circumferential damage to the concrete wall surface it contacts will decrease, further reducing the destructive effect on the wall strength when drilling an inclined hole. Attached Figure Description

[0017] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a ceiling device for interior decoration in a preferred embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the first drill bit and the second drill bit portion shown in the present invention; Figure 3 This is a schematic diagram of the structure of the second drill bit portion shown in the present invention; Figure 4 This is a schematic cross-sectional view of the first and second drill bits shown in this invention. Figure 5 This is a schematic diagram of the structure of a ceiling device for interior decoration in a preferred embodiment of the present invention. Figure 2 ; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 for Figure 5 Enlarged diagram of point B in the middle.

[0019] Explanation of reference numerals in the instruction manual: 1. First drill bit; 11. Drill bit body; 111. Arc-shaped back face; 12. Shock absorber rod; 2. Second drill bit; 21. Vibration damping groove; 211. Groove; 212. Flat back face; 3. Shock-absorbing structure; 31. Rubber ring; 311. Buffer part; 3111. Buffer cavity; 312. Support part; 4. Spiral groove; 5. Support structure; 51. Telescopic assembly; 52. Telescopic cylinder; 53. Telescopic slide bar; 54. Tooth block; 55. Extension rod; 56. Extension block; 57. High-position support rod; 6. Angle offset structure; 61. Offset drive source; 62. Offset connecting rod; 63. Eccentric component; 64. Offset frame; 65. Offset connecting slot; 66. Offset platform; 7. Base; 71. Buffer rubber block; 72. Support foot; 73. Adjustment mechanism; 731. Adjustment cylinder; 732. Adjustment telescopic rod; 733. Threaded rod; 734. Rotating handle; 8. Driver source. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0021] The purpose of this invention is to address the problem that traditional ceiling drilling equipment drill bits are prone to hole wall cracking and wall damage due to excessive lateral force, which can significantly reduce the wall's load-bearing capacity and strength. Therefore, it is necessary to solve the problem in the prior art that the drill bit's cutting angle is not precisely controlled, resulting in damage to the wall structure when drilling at an angle.

[0022] When drilling at an angle, an integrated drill bit is typically used to hold the target area of ​​the concrete wall to be drilled, and the drill bit is directly started to drill at an angle. This drilling process can easily cause the direction of force applied by the construction worker to deviate, and the direction of damage to the concrete wall surface cannot be concentrated in a straight line. This can result in drilling an angled hole with a diameter exceeding the specification, thereby increasing the degree of damage to the concrete wall surface.

[0023] Therefore, the equipment described in this invention follows the following process flow during use: S1: Apply tape to the concrete wall and leave a hole of the size of the inclined hole in the tape. Adjust the equipment so that the first drill bit 1 and the second drill bit 2 can first make vertical contact with the hole. S2: The first drill bit 1 first drills a pilot hole, and then the drill bit is withdrawn; S3: Adjust the angle of the equipment, change the orientation of the first drill bit 1 and make it contact the inner wall of the guide hole, then start the equipment again to drill the inclined hole.

[0024] refer to Figure 2 , 3 4. This invention discloses a ceiling drilling device for interior decoration, comprising: a first drill bit 1, which includes a drill bit body 11 at the front end and a shock-absorbing rod 12 at the rear end; a second drill bit 2, which is connected to the first drill bit 1, and a shock-absorbing groove 21 is provided at the connection between the two, the shock-absorbing rod 12 passes through the shock-absorbing groove 21 and is fixed thereto, the drill bit body 11 protrudes out of the groove opening of the shock-absorbing groove 21, and the outward extension length of the drill bit body 11 protruding out of the groove opening of the shock-absorbing groove 21 is less than the cross-sectional diameter of the second drill bit 2; the cross-sectional area of ​​the second drill bit 2 is greater than the cross-sectional area of ​​the drill bit body 11.

[0025] refer to Figure 2 , 3 4. The first drill bit 1 adopts a steel structure. The shock absorber rod 12 and the drill bit body 11 are integrally formed. The drill bit body 11 applies a rotating impact force to the concrete wall to drill holes. The shock absorber rod 12 is a cylindrical column structure. The shock absorber rod 12 is inserted into the shock absorber groove 21 and is fixed to the bottom of the shock absorber groove 21 by softening and then solidifying molten iron.

[0026] refer to Figure 2 , 3 4. The volume of the drill bit body 11 is significantly smaller than that of the second drill bit 2. This is manifested in the fact that the length of the drill bit body 11 protruding from the groove of the shock-absorbing groove 21 and extending outward is less than the cross-sectional diameter of the second drill bit 2. Under this setting, even if the drill bit body 11 is completely driven into the concrete of the target area, only a small guide hole is left on the concrete wall surface, which is convenient for supporting the first drill bit 1 and the second drill bit 2 to change the orientation when drilling at an angle.

[0027] refer to Figure 2 , 3 4. The cross-sectional area of ​​the second drill bit 2 is larger than the cross-sectional area of ​​the drill bit body 11, so that the first drill bit 1 and the second drill bit 2 of the drill bit part of the device are distributed in a stepped manner towards the drive source 8. The diameter of the inclined hole is based on the cross-sectional diameter of the second drill bit 2, and the diameter of the guide hole is based on the cross-sectional diameter of the drill bit body 11.

[0028] refer to Figure 2 , 3 4. The device also includes a shock-absorbing structure 3, which includes several rubber rings 31 fitted on the outside of the shock-absorbing rod 12. The inner wall of the shock-absorbing groove 21 is provided with a groove 211 for the rubber rings 31 to be inserted. The rubber rings 31 fill the gap between the groove 211 and the shock-absorbing rod 12.

[0029] refer to Figure 2 ,3 4. The main function of the damping structure 3 is to absorb the vibration energy transmitted from the second drill bit 2 to the first drill bit 1, and to counteract the vibration energy of the second drill bit 2 itself. This ensures that when the drill bit body 11 drills an inclined hole, it mainly applies rotational impact force to the concrete structure inside the inclined hole, reducing the damage to the concrete structure caused by the circumferential impact force generated by the drill bit's vibration during drilling. The damping structure 3 includes several rubber rings 31 fitted on the outside of the damping rod 12. The rubber rings 31 are made of industrial rubber, which has a high vibration damping and energy absorption effect. An insert is provided on the inner wall of the damping groove 21 for the rubber rings 31 to be embedded. The groove 211 is shaped to fit the outer wall of the rubber ring 31. When assembling the first drill bit 1 and the second drill bit 2 in industrial production, the rubber ring 31 is first put on the shock absorber 12. The inner diameter of the rubber ring 31 is slightly smaller than the diameter of the shock absorber 12, so that the inner surface of the rubber ring 31 presses the shock absorber 12 to form a fixed shape. High-temperature molten iron is applied to the bottom of the shock absorber groove 21. After the shock absorber 12 is inserted, the bottom of the shock absorber 12 fuses with the high-temperature molten iron. At this time, the rubber ring 31 will be engaged in the groove 211 to initially fix the shock absorber 12. After the high-temperature molten iron cools down, the shock absorber 12 is completely fixed in the shock absorber groove 21.

[0030] refer to Figure 4 The rubber ring 31 includes a buffer portion 311 and a support portion 312. The buffer portion 311 is close to the groove 211, and the support portion 312 is close to the shock absorber 12. The buffer portion 311 has a buffer cavity 3111 opened in the rubber ring 31. The buffer cavity 3111 is filled with magnetorheological fluid. Several protrusions with hemispherical cross sections are opened on the inner surface of the support portion 312 that fits against the shock absorber 12.

[0031] refer to Figure 4The rubber ring 31 is configured as a combination of a support part 312 for supporting the main structure and a buffer part 311 for absorbing energy. The buffer part 311 is located near the groove 211 and can absorb vibration energy transmitted from the outer wall of the second drill bit 2. The support part 312 is located near the shock absorber 12 and provides support through rubber material. The buffer part 311 is configured as an annular buffer cavity 3111. The buffer cavity 3111, with its hollow internal structure, creates a buffer space against external impacts. Combined with the material properties of the rubber ring 31 itself, it produces a partial energy absorption effect. The buffer cavity 3111 is filled with magnetorheological fluid, which can... During the injection molding of the rubber ring 31, a microporous channel of 0.5-1mm is set in the cavity of the rubber ring 31 mold, and magnetorheological fluid is injected at the same time as the injection molding. The carbonyl iron powder concentration of the magnetorheological fluid is greater than 30%, which can generate magnetic field resistance between the magnetic field generated by the steel alloy material of the second drill bit 2, and further offset the energy entering from the second drill bit 2, thereby enhancing the energy absorption and buffering effect of the rubber ring 31. Several protrusions with hemispherical cross sections are integrally formed on the inner surface of the support part 312 and the shock absorber rod 12 by injection molding, which increases the area of ​​the rubber of the support part 312 and improves the buffering capacity of the rubber ring 31 itself.

[0032] In another embodiment, the buffer cavity 3111 can also be configured as a double cavity structure, with the outer cavity filled with magnetorheological fluid and the inner cavity filled with cooling water. This can cool the high temperature generated by the rotation of the second drill bit 2 while absorbing energy, and also prevent the carbonyl iron powder inside the magnetorheological fluid from oxidizing due to high temperature, thereby reducing the energy absorption effect.

[0033] refer to Figure 2 , 3 4. The side surfaces of the first drill bit 1 and the second drill bit 2 are both provided with spiral grooves 4. The angle of the spiral angle at the outer end of the spiral groove 4 is greater than the angle of the spiral angle at the inner end of the spiral groove 4. An arc-shaped back face 111 is fixed on the drill bit body 11. A flat back face 212 is fixed between the second drill bit 2 and the drill bit body 11. The width of the flat back face 212 is between 0.8-1.2mm.

[0034] refer to Figure 2 , 3 4. Chip removal grooves are provided on the drill bit. In this equipment, this is manifested in the fact that the side surfaces of the first drill bit 1 and the second drill bit 2 are both provided with helical grooves. The angle of the outer helix angle of the helical groove 4 is greater than the angle of the inner helix angle of the helical groove 4, which increases its chip removal capacity and reduces wear. Increasing the angle of the inner helix angle can make the steel content per unit area of ​​the stepped drill bit higher, the strength higher, and reduce the risk of hot cracks at the connection of the stepped sections.

[0035] refer to Figure 2To accommodate the stepped drill bit, an arc-shaped back face 111 is fixed on the drill bit body 11. A flat back face 212 is fixed between the second drill bit 2 and the drill bit body 11. The arc-shaped back face 111 can reduce the friction between the concrete and the drill bit, and also reduce the range of damage to the concrete caused by the drill bit. The flat back face 212 uses more steel alloy material, has stronger support, and can further enhance the structural strength of the stepped drill bit.

[0036] refer to Figure 1 , 5 6. The device also includes a support structure 5 for supporting the second drill bit 2, a telescopic assembly 51 fixed to the end of the second drill bit 2; a telescopic cylinder 52 fixed to one side of the support structure 5, a telescopic slide rod 53 fixed to one side of the telescopic cylinder 52, the telescopic assembly 51 and the telescopic slide rod 53 slidably connected, the piston rod of the telescopic cylinder 52 fixed to the telescopic assembly 51, a drive source 8 for driving the first drill bit 1 and the second drill bit 2 to rotate fixed to one side of the support structure 5; an angle offset structure 6 for changing the drilling orientation of the first drill bit 1 and the second drill bit 2 towards the target area; the angle offset structure 6 includes an offset drive source 861; an offset connecting rod 62 passing through the support structure 5, an eccentric member 63 fixed between the power output shaft of the offset drive source 861 and the offset connecting rod 62, and when the output shaft of the offset drive source 861 rotates, the offset connecting rod 62 drives the support structure 5 to rotate synchronously.

[0037] refer to Figure 1 , 5 6. The support structure 5 supports the second drill bit 2. From top to bottom, the support structure 5 includes a toothed block 54 fixed to the bottom of the second drill bit 2, an extension rod 55 fixed to the bottom of the toothed block 54, an extension block 56 fixed to the bottom of the extension rod 55, and a high-level support rod 57 at the bottom. A telescopic slide rod 53 is fixed to the top of the high-level support rod 57. The extension block 56 has a hollow internal structure and is slidably connected to the telescopic slide rod 53. A telescopic cylinder 52 is fixed to the high-level support rod 57. The piston rod end is fixedly connected to the top of the extension block 56. When the piston of the telescopic cylinder 52 extends, it will drive the extension block 56 to slide on the telescopic slide rod 53, thereby pushing the second drill bit 2 and the first drill bit 1 forward. Conversely, when the piston rod of the telescopic cylinder 52 retracts, it will drive the second drill bit 2 and the first drill bit 1 backward. A placement platform is fixed on the other side of the extension block 56. A drive source 8 is fixed on the placement platform. The drive source 8 is a stepper motor and is electrically connected to the second drill bit 2, which can drive the second drill bit 2 to rotate.

[0038] refer to Figure 1 , 56. An angle offset structure 6 is fixed at the bottom of the high-position support rod 57, including two offset drive sources 861 and offset frame bodies 64 fixed on both sides of the high-position support rod 57. The offset drive sources 861 are servo motors. The power output end of the offset drive source 861 passes through the offset frame body 64. A through offset groove 65 is opened on the high-position support rod 57. A plate-shaped eccentric part 63 is fixed at the power output end of each offset drive source 861. An offset connecting rod 62 is connected between the two eccentric parts 63. The offset connecting rod 62 passes through the offset groove 65. When the servo motor is turned on, the power output end of the offset drive source 861 will drive the eccentric part 63 to rotate, and cause the offset connecting rod 62 to exert a force against the side wall of the offset groove 65, which will cause the bottom of the high-position support rod 57 to offset at an angle, thereby causing the support structure 5 to change angle, and thus changing the drilling orientation of the first drill bit 1 and the second drill bit 2.

[0039] refer to Figure 1 The device also includes a base 7 for supporting the angle offset structure 6, and a buffer rubber block 71 is provided on the base 7.

[0040] refer to Figure 1 , 6 The angle offset structure 6 also includes an offset platform 66 fixed to the bottom of the offset frame 64. A base 7 is fixed to the bottom of the offset platform 66 to support the overall structure of the equipment. A buffer rubber block 71 is provided at the bottom of the base 7. The buffer rubber block 71 is made of rubber and can generate a large friction force with the ground, which facilitates the stability of the equipment and the buffering effect of the impact force and reverse force of the drill bit.

[0041] refer to Figure 1 In another embodiment, the base 7 also has support feet 72 extending in three directions, and the bottom of the support feet 72 is also fixed with a buffer rubber block 71. The support feet 72 can be retracted, which further improves the overall structural stability of the device.

[0042] refer to Figure 1 , 5 In another embodiment, an adjustment mechanism 73 is provided between the base 7 and the offset platform 66. The adjustment mechanism 73 includes an adjustment cylinder 731 and an adjustment telescopic rod 732 slidably connected in the adjustment cylinder 731. A threaded rod 733 passes through the adjustment cylinder 731. The extension length of the adjustment telescopic rod 732 is controlled by rotating the threaded rod 733. A rotating handle 734 is fixed on one side of the threaded rod 733. When it is necessary to further adjust the height of the high-position support rod 57 to facilitate drilling into the ceiling at a higher height, the threaded rod 733 is rotated and pulled out to extend the adjustment telescopic rod 732. When the corresponding height is adjusted, the threaded rod 733 is reinserted and rotated to tighten it, so that drilling can be carried out on the ceiling at a higher height.

[0043] The ceiling drilling device for interior decoration described in this embodiment of the invention has the following drilling process: During the drilling process, the decorator first applies adhesive tape to the location where a hole needs to be drilled, leaving the hole area. Then, the height of the device is adjusted, and the drill bit is started to rotate vertically. The drill bit body 11 of the first drill bit 1 presses against the concrete surface and creates a small guide hole. Then, the telescopic cylinder 52 is adjusted to pull out the first drill bit 1. The offset drive source 861 is activated, changing the drilling orientation of the first drill bit 1. The telescopic cylinder 52 is adjusted again, causing the first drill bit to tilt. 1. Press against the inner wall of the guide hole and start the first drill bit 1 to drill at an angle. As the drill body 11 of the first drill bit 1 is fully inserted, the second drill bit 2 continues to drill the concrete surface along the channel into which the first drill bit 1 has inserted. The diameter of the hole drilled by the second drill bit 2 is the diameter required for the inclined hole. Until the inclined hole is formed, the drill bit is pulled out, and the drilling process of the inclined hole is completed. During the drilling process, the rubber ring will absorb the vibration force generated by the second drill bit 2, reduce the vibration impact force of the second drill bit 2 and the first drill bit 1 on the inner wall of the concrete hole, and achieve the effect of reducing the degree of damage to the strength of the concrete wall by the drill bit.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A ceiling drilling device for interior decoration, characterized in that: include, The first drill bit includes a drill bit body at the front end and a shock absorber rod at the rear end; The second drill bit is connected to the first drill bit, and a shock-absorbing groove is provided at the connection between the two. The shock-absorbing rod passes through the shock-absorbing groove and is fixed thereto. The shock-absorbing structure includes several rubber rings sleeved on the outside of the shock-absorbing rod, and the inner wall of the shock-absorbing groove is provided with a groove for the rubber rings to be inserted into, and the rubber rings fill the gap between the groove and the shock-absorbing rod; The drill bit body protrudes from the opening of the damping groove, and the outward extension length of the drill bit protruding from the opening of the damping groove is less than the cross-sectional diameter of the second drill bit; the cross-sectional area of ​​the second drill bit is greater than the cross-sectional area of ​​the drill bit body.

2. The ceiling drilling equipment for interior decoration according to claim 1, characterized in that: The rubber ring includes a buffer portion and a support portion. The buffer portion is close to the groove, and the support portion is close to the shock absorber rod. The buffer portion has a buffer cavity formed inside the rubber ring.

3. The ceiling drilling equipment for interior decoration according to claim 2, characterized in that: The buffer cavity is filled with magnetorheological fluid.

4. The ceiling drilling equipment for interior decoration according to claim 2, characterized in that: Several hemispherical protrusions are provided on the inner surface of the support and the shock absorber that are in contact with each other.

5. The ceiling drilling equipment for interior decoration according to claim 1, characterized in that: Both the first drill bit and the second drill bit have helical grooves on their side surfaces, and the helix angle at the outer end of the helical groove is greater than the helix angle at the inner end of the helical groove.

6. The ceiling drilling equipment for interior decoration according to claim 1, characterized in that: An arc-shaped back face is fixed on the drill bit body, and a flat back face is fixed between the second drill bit and the drill bit body.

7. The ceiling drilling equipment for interior decoration according to claim 6, characterized in that: The width of the flat back face is between 0.8 and 1.2 mm.

8. The ceiling drilling equipment for interior decoration according to claim 1, characterized in that: The device also includes, A support structure for supporting the second drill bit, wherein a drive source for driving the first drill bit and the second drill bit to rotate is fixed on one side of the support structure; An angle offset structure is used to change the drilling orientation of the first drill bit and the second drill bit toward the target area; The angle offset structure includes, Offset drive source; An offset link passes through the support structure. An eccentric component is fixed between the power output shaft of the offset drive source and the offset link. When the output shaft of the offset drive source rotates, the offset link drives the support structure to rotate synchronously.

9. The ceiling drilling equipment for interior decoration according to claim 8, characterized in that: The device also includes, A base for supporting the angular offset structure, wherein a cushioning rubber block is provided on the base.

10. The ceiling drilling equipment for interior decoration according to claim 8, characterized in that: The support structure also includes, A telescopic assembly, which is fixed to the end of the second drill bit; A telescopic cylinder is fixed to one side of the support structure, and a telescopic slide rod is fixed to one side of the telescopic cylinder. The telescopic assembly and the telescopic slide rod are slidably connected, and the piston rod of the telescopic cylinder is fixed to the telescopic assembly.

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