Drill bit stabilizing structure of percussion drill and percussion drill

Abstract

In order to solve the problems that a bearing connected with a rotating shaft in an existing percussion drill is subjected to large shaking impact and is prone to being damaged, the drill bit stabilizing structure of the percussion drill and the percussion drill are provided, the drill bit stabilizing structure of the percussion drill comprises a percussion drill bit, and the percussion drill bit comprises the rotating shaft, a clamping component, the bearing and a damping ring; the damping ring and the bearing are respectively sleeved on the rotating shaft, and the rotating shaft is connected with an external motor; the damping ring and the bearing are further connected with an external percussion drill shell. The clamping component is arranged at the end part of the rotating shaft; a part of rotating shaft shaking force is unloaded through the damping ring, and the influence of shaking of the rotating shaft on the bearing is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of impact drills, in particular to a drill bit stabilizing structure of an impact drill and the impact drill. Background Art

[0002] An impact drill is a device that relies on rotation and impact to achieve drilling operations. A rotating shaft is usually provided between the rotating shaft and the housing of the impact drill to achieve relative fixation, such as that shown in the patent with authorization announcement number CN209935924U. However, in the existing impact drill structure, due to the impact and rotation of the drill bit, and the drill bit and the housing are only connected by bearings, the vibration on the rotating shaft is all borne by the bearings, which is more likely to cause bearing damage and shorten the service life of the bearings. Therefore, a stable structure of an impact drill bit with a long service life is required. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provide a drill bit stabilizing structure of an impact drill and an impact drill.

[0004] In order to solve the above problems, the utility model adopts the following solutions:

[0005] A drill bit stabilizing structure for an impact drill comprises an impact drill bit, wherein the impact drill bit comprises a rotating shaft, a clamping component, a bearing and a shock-absorbing ring; the shock-absorbing ring and the bearing are respectively sleeved on the rotating shaft, and the rotating shaft is connected to an external motor; the shock-absorbing ring and the bearing are also respectively connected to an external impact drill housing; the clamping component is arranged at the end of the rotating shaft.

[0006] Furthermore, two bearings are arranged on the rotating shaft, one of which is arranged at an end of the rotating shaft away from the clamping component, and the other bearing is arranged between the bearing at the end of the rotating shaft and the clamping component.

[0007] Furthermore, the shock-absorbing ring is rotatably arranged outside the rotating shaft, and the shock-absorbing ring is located between two bearings on the rotating shaft.

[0008] Furthermore, the shock-absorbing ring is also provided with a protrusion for clamping with the external shell.

[0009] Furthermore, the impact drill bit also includes a first impact piece and a second impact piece; the first impact piece is fixedly connected to the external shell; the second impact piece is fixedly connected to the rotating shaft, and the second impact piece is also connected to the motor transmission; a waveform structure for realizing reciprocating impact of the rotating shaft is provided on the side where the first impact piece and the second impact piece are close to each other.

[0010] Furthermore, a spring is provided between the first impact member and the second impact member.

[0011] Furthermore, the wave structure includes wave teeth; the wave teeth are respectively located on the first impact piece and the second impact piece.

[0012] Furthermore, the shock-absorbing ring is made of metal or alloy material.

[0013] An impact drill comprises the above-mentioned drill bit stabilizing structure, and also comprises a shell and a motor; the motor is arranged inside the shell, and the motor is connected to the rotating shaft; the bearing and the shock-absorbing ring in the drill bit stabilizing structure are both arranged inside the shell; one end of the rotating shaft is located inside the shell, and the other end of the rotating shaft extends out of the shell; a clamping component is also arranged on the end of the rotating shaft extending out of the shell.

[0014] Furthermore, a groove body for fitting and clamping the shock-absorbing ring is also provided inside the shell.

[0015] The beneficial effects of the utility model are:

[0016] By sleeve-arranging a shock-absorbing ring for shock absorption on the rotating shaft, a part of the vibration force of the rotating shaft is unloaded, thereby reducing the influence of the shaking of the rotating shaft on the bearing;

[0017] By arranging a protrusion on the shock absorbing ring and cooperating with the external shell, the shock absorbing ring is clamped to prevent it from rotating with the rotating shaft;

[0018] By arranging a spring between the second impact member and the first impact member, the impact drill has two working modes: impact rotation and rotation only. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of Example 1;

[0020] Figure 2 This is a schematic diagram of the structure inside the housing of Example 1;

[0021] Figure 3 This is a schematic diagram of the combination of the motor and the impact drill bit of Example 1;

[0022] Figure 4 Schematic diagram of the separation of the impact drill bit of Example 1 Figure 1 ;

[0023] Figure 5 Schematic diagram of the separation of the impact drill bit of Example 1 Figure 2 ;

[0024] Figure 6 This is a partial enlarged view of the shell of Example 1.

[0025] Description of the symbols in the accompanying drawings: impact drill bit 1, rotating shaft 11, clamping part 12, bearing 13, shock-absorbing ring 14, protrusion 141, first impact member 15, second impact member 16, corrugated structure 17, spring 18, housing 2, groove body 21, recessed hole 22, motor 3. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the figures only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] Embodiment 1:

[0029] like Figures 1 to 6 As shown, a drill bit stabilizing structure of an impact drill comprises an impact drill bit 1, wherein the impact drill bit 1 comprises a rotating shaft 11, a clamping component 12, a bearing 13 and a shock-absorbing ring 14; the shock-absorbing ring 14 and the bearing 13 are respectively sleeved and arranged on the rotating shaft 11, and it should be noted that the shock-absorbing ring 14 and the bearing 13 are not fixedly connected to the rotating shaft 11, but there is a certain gap between them, so that the shock-absorbing ring 14 and the bearing 13 can slide on the rotating shaft 11, thereby ensuring that when the rotating shaft 11 moves back and forth, the shock-absorbing ring 14 and the bearing 13 can not move accordingly; the rotating shaft 11 is connected to an external motor 3, so that the rotating shaft 11 can rotate following the movement of the motor 3; the shock-absorbing ring 14 and the bearing 13 are also respectively connected to an external impact drill housing 2, for limiting the movement of the shock-absorbing ring 14 and the bearing 13 in the axial direction of the rotating shaft 11; the clamping component 12 is arranged at the end of the rotating shaft 11, and the clamping component 12 is used to clamp the external drill.

[0030] Two bearings 13 are arranged on the rotating shaft 11, one of which is arranged at one end of the rotating shaft 11 away from the clamping part 12, and the other is arranged between the bearing 13 at the end of the rotating shaft 11 and the clamping part 12. The bearings 13 are mainly used to limit the activity space of the rotating shaft 11 on the surface of the rotating shaft 11 without affecting the rotation of the rotating shaft 11, so as to prevent the rotating shaft 11 from shaking significantly and affecting the hole turning effect.

[0031] The shock absorbing ring 14 is rotatably arranged outside the rotating shaft 11, and the shock absorbing ring 14 is located between the two bearings 13 on the rotating shaft 11; the shock absorbing ring 14 is also provided with a protrusion 141 for engaging with the external housing 2, and is used to limit the rotation of the vibration ring. The shock absorbing ring 14 is made of metal or alloy material to ensure the service life of the shock absorbing ring 14. The shock absorbing ring 14 is used to help unload part of the vibration force of the rotating shaft 11, reduce the shaking impact of the rotating shaft 11 on the bearing 13, and extend the service life of the bearing 13.

[0032] The impact drill 1 also includes a first impact member 15 and a second impact member 16; the first impact member 15 is fixedly connected to the external housing 2; the second impact member 16 is fixedly connected to the rotating shaft 11, and the second impact member 16 is also transmission-connected to the motor 3; a wave structure 17 for realizing reciprocating impact of the rotating shaft 11 is provided on the side where the first impact member 15 and the second impact member 16 are close to each other; the wave structure 17 includes wave teeth; the wave teeth are respectively located on the first impact member 15 and the second impact member 16. When the wave structures 17 of the first impact member 15 and the second impact member 16 contact each other; the second impact member 16 moves along with the rotation of the rotating shaft 11 on the one hand, and on the other hand, due to the mutual restriction of the wave structures 17, the second impact member 16 continues to vibrate back and forth. A spring 18 is also provided between the first impact piece 15 and the second impact piece 16 to help the second impact piece 16 to reciprocate better; due to the provision of the spring 18, the impact drill can be switched between two modes: impact rotation and rotation only. When the clamping part 12 is subjected to pressure and contracts toward the inside of the shell 2, the second impact piece 16 and the first impact piece 15 overcome the elastic force of the spring 18 to achieve contact. Subsequently, when the second impact piece 16 rotates with the rotating shaft 11, it can impact and rotate at the same time. When the pressure on the clamping part 12 does not completely overcome the elastic force, causing the second impact piece 16 to contact the first impact piece 15, the rotating shaft 11 only rotates.

[0033] An impact drill includes the above-mentioned drill bit stabilizing structure, and also includes a shell 2 and a motor 3; the motor 3 is arranged inside the shell 2, and the motor 3 is connected to the rotating shaft 11; the bearing 13 and the shock-absorbing ring 14 in the drill bit stabilizing structure are both arranged inside the shell 2; one end of the rotating shaft 11 is located inside the shell 2, and the other end of the rotating shaft 11 extends out of the shell 2; a clamping component 12 is also provided on the end of the rotating shaft 11 extending out of the shell 2.

[0034] The shell 2 is also provided with a groove body 21 for cooperating with the damping ring 14 to clamp the damping ring 14, and the groove body 21 is used to limit the damping ring 14 to reciprocate with the rotating shaft 11; it should be noted that the groove body 21 is also provided with a recessed hole 22 that cooperates with the protrusion 141 on the damping ring 14, so that the protrusion 141 on the damping ring 14 can be embedded in the recessed hole 22, and the recessed hole 22 is used to limit the damping ring 14 to rotate with the rotating shaft 11.

[0035] During the implementation process, a shock-absorbing ring 14 for shock absorption is sleeved on the rotating shaft 11 to unload a part of the vibration force of the rotating shaft 11 and reduce the influence of the shaking of the rotating shaft 11 on the bearing 13; a protrusion 141 is provided on the shock-absorbing ring 14 to cooperate with the external shell 2 to clamp the shock-absorbing ring 14 and prevent it from rotating with the rotating shaft 11; a spring 18 is provided between the second impact member 16 and the first impact member 15, so that the impact drill has two working modes: impact rotation and rotation only.

[0036] The above description is only a specific example of the utility model and does not constitute any limitation to the utility model. Obviously, for professionals in this field, after understanding the content and principle of the utility model, it is possible to make various modifications and changes in form and details without departing from the principle and structure of the utility model, but these modifications and changes based on the idea of ​​the utility model are still within the scope of protection of the claims of the utility model.

Claims

1. A drill bit stabilizing structure for an impact drill, comprising an impact drill bit (1), characterized in that: The impact drill bit (1) comprises a rotating shaft (11), a clamping component (12), a bearing (13) and a shock-absorbing ring (14); the shock-absorbing ring (14) and the bearing (13) are respectively sleeved on the rotating shaft (11); the rotating shaft (11) is connected to an external motor (3); the shock-absorbing ring (14) and the bearing (13) are also respectively connected to an external impact drill housing (2); and the clamping component (12) is arranged at the end of the rotating shaft (11).

2. The drill bit stabilizing structure of an impact drill according to claim 1, characterized in that: The rotating shaft (11) is provided with two bearings (13), wherein one bearing (13) is provided at an end of the rotating shaft (11) away from the clamping component (12), and the other bearing (13) is provided between the bearing (13) at the end of the rotating shaft (11) and the clamping component (12).

3. The drill bit stabilizing structure of an impact drill according to claim 2, characterized in that: The shock absorbing ring (14) is rotatably arranged outside the rotating shaft (11), and the shock absorbing ring (14) is located between two bearings (13) on the rotating shaft (11).

4. The drill bit stabilizing structure of an impact drill according to claim 1, characterized in that: The shock-absorbing ring (14) is also provided with a protrusion (141) for clamping with the external shell (2).

5. The drill bit stabilizing structure of an impact drill according to claim 1, characterized in that: The impact drill bit (1) further comprises a first impact member (15) and a second impact member (16); the first impact member (15) is fixedly connected to the external housing (2); the second impact member (16) is fixedly connected to the rotating shaft (11), and the second impact member (16) is also transmission-connected to the motor (3); and a wave-shaped structure (17) for realizing reciprocating impact of the rotating shaft (11) is provided on a side where the first impact member (15) and the second impact member (16) are close to each other.

6. The drill bit stabilizing structure of an impact drill according to claim 5, characterized in that: A spring (18) is also provided between the first impact piece (15) and the second impact piece (16).

7. The drill bit stabilizing structure of an impact drill according to claim 5, characterized in that: The wave structure (17) comprises wave teeth; the wave teeth are respectively located on the first impact piece (15) and the second impact piece (16).

8. The drill bit stabilizing structure of an impact drill according to claim 1, characterized in that: The shock absorbing ring (14) is made of metal or alloy material.

9. An impact drill, characterized in that: The drill bit stabilizing structure comprises the drill bit stabilizing structure as claimed in any one of claims 1 to 8, and further comprises a housing (2) and a motor (3); the motor (3) is arranged inside the housing (2), and the motor (3) is connected to a rotating shaft (11); the bearing (13) and the shock absorbing ring (14) in the drill bit stabilizing structure are both arranged inside the housing (2); one end of the rotating shaft (11) is located inside the housing (2), and the other end of the rotating shaft (11) protrudes from the housing (2); a clamping component (12) is also arranged on the end of the rotating shaft (11) protruding from the housing (2).

10. The impact drill according to claim 9, characterized in that: A groove body (21) for engaging and clamping the shock absorbing ring (14) is also provided inside the housing (2).

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