Shock absorption and noise reduction device for percussion drill

Abstract

The utility model relates to the technical field of noise reduction devices, in particular to a shock absorption and noise reduction device for a percussion drill. According to the technical scheme, the percussion drill comprises a percussion drill body and further comprises a fixed machine head installed at the front end of the percussion drill body, a drill bit is connected to the fixed machine head, the surface of the drill bit is sleeved with a sound absorption cover, and a transmission box is fixedly installed at the top of the percussion drill body. According to the utility model, the protective shell is automatically protected, the service life of the protective shell is prolonged, and the protective shell can always abut against the wall, so that not only is the damage to an operator caused by particle splashing prevented, but also the generated dust particles are all collected in the protective shell, the subsequent treatment is facilitated, and the cleanness of the working environment is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction devices, in particular to a vibration reduction and noise reduction device for an impact drill. Background Art

[0002] As urban development changes day by day, people are increasingly interested in urban reconstruction and house renovation. Therefore, we design an efficient impact drill for drilling holes in concrete, floor slabs, brick walls and stones. It has a good shock absorption system, precise speed control switch, stable and reliable drill bit jamming system, comprehensive protection devices, and an AC large impact drill with forward and reverse functions to meet the urgent needs of the market. The research and development of large impact drills is currently rare in the domestic market, and the price of foreign products is quite expensive. With the increasing number of people renovating and remodeling houses, high-power impact drills have broad application prospects, which also indicates that the market potential is huge and the prospects are promising.

[0003] In the daily operation of an impact drill, the drill bit continuously rotates to drill holes, which will generate loud noise and dust splashing, putting the operator in a relatively harsh working environment and affecting the operator's health. For this reason, a protective cover is installed near the drill bit to block part of the dust and reduce noise, and prevent dust from splashing directly onto the operator's face. However, the protective cover is easily damaged after being hit and worn by flying particles for a long time, which makes the sound insulation and protection effects worse. Therefore, the present application proposes a shock-absorbing and noise-reducing device for an impact drill. Utility Model Content

[0004] The utility model aims to provide a vibration reduction and noise reduction device for impact drills in view of the problem that the protective cover in the background technology is easy to be damaged, which reduces the sound insulation and protection effects.

[0005] The technical solution of the utility model is: a vibration reduction and noise reduction device for an impact drill, comprising an impact drill body, and also comprising:

[0006] A fixed head is installed at the front end of the impact drill body, a drill bit is connected to the fixed head, a sound absorbing cover is sleeved on the surface of the drill bit, a transmission box is fixedly installed on the top of the impact drill body, and a base block is fixedly installed on the bottom end of the impact drill body;

[0007] A stabilizing support device, which is arranged at the bottom end of the base block and is used for shock absorbing and stabilizing the impact drill body;

[0008] A protective device is arranged in the transmission box and is used for noise reduction protection of the impact drill body.

[0009] Optionally, a handle is fixedly welded to the bottom end of the base block, and a shock-absorbing rubber pad is bonded to the outer surface of the handle.

[0010] Optionally, the stable support device includes a limiting slide groove opened at the bottom of the base block, a limiting slider is slidably installed in the limiting slide groove, a connecting frame is fixedly installed on the limiting slider, the connecting frame is connected to a support plate, and a rubber pad is connected to one side of the support plate.

[0011] Optionally, the protective device includes a slide groove fixedly mounted on the bottom inner wall of the transmission box, a slider is slidably mounted in the slide groove, a fixing rod is fixedly mounted on the slider, a through groove for the fixing rod to pass through is opened on one side of the transmission box, a connecting ring is installed on the fixing rod, a protective shell is connected to the connecting ring, the protective shell is sleeved on the surface of the drill bit, and a moving device is arranged in the slide groove.

[0012] Optionally, the moving device includes a screw rod rotatably installed in the slide groove and threadedly connected to the slider, one end of the screw rod passes through the outer wall of the slide groove, one end of the screw rod is fixedly installed with a first gear, the first gear is meshed with a second gear, a rotating shaft is rotatably installed on the top of the transmission box, the top of the rotating shaft is fixedly connected with a screw cap, and the bottom end of the rotating shaft is fixedly connected to the second gear.

[0013] Optionally, a baffle is fixedly mounted on the outer wall of the protective shell, a guide column is slidably mounted on the inner wall of the protective shell, a spring is sleeved on the guide column, and an elastic plate is connected to the guide column.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. By arranging shock-absorbing rubber pads, limit slide grooves, limit sliders, support plates and rubber pads, the drill bit can use the limit slider to drive the support plate to lean against the wall when drilling, and the rubber pads can reduce a certain friction force, making the support plate more stable and firm. The impact drill body has a support part, and the reaction force of the drill bit can be partially offset by the support plate, making the use of the impact drill body more stable.

[0016] 2. By setting a transmission box, a slider, a fixing rod, a protective shell, a sound-absorbing cover and a baffle, when the drill bit penetrates into the wall, the slider drives the protective shell to adjust and move, ensuring that the protective shell can always be against the wall, so that all the flying particles are located inside the protective shell, avoiding damage to the operator caused by flying particles, and concentrating the particles in the protective shell, which is convenient for subsequent processing and maintains a clean environment. When the drill bit penetrates to a certain depth, the protective shell is moved to the inside of the sound-absorbing cover, and the sound absorption of the sound-absorbing cover is cooperated to make the overall sound insulation effect better and effectively reduce a certain amount of noise.

[0017] 3. By setting the guide column, spring and elastic plate, the splashing particles continuously impact on the elastic plate. With the elastic force of the spring and the guide column, the impact force of the particles is reduced, which effectively protects the protective shell and prolongs the service life of the protective shell.

[0018] The utility model realizes automatic protection of the protective shell, improves the service life of the protective shell, and enables the protective shell to always lean against the wall, which not only prevents damage to operators caused by flying particles, but also makes all generated dust particles gather in the protective shell, which is convenient for subsequent processing and maintains a clean working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of an embodiment of the utility model is given Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of an embodiment of the utility model Figure 2 ;

[0021] Figure 3 A schematic diagram of the internal structure of a transmission box according to an embodiment of the utility model is given;

[0022] Figure 4 The figure is a schematic diagram of the elastic plate connection structure of an embodiment of the utility model.

[0023] Figure numerals: 1. impact drill body; 2. fixed head; 3. drill bit; 4. transmission box; 5. base block; 6. handle; 7. shock-absorbing rubber pad; 8. sound-absorbing cover; 9. slide groove; 10. slider; 11. fixed rod; 12. connecting ring; 13. protective shell; 14. baffle; 15. spring; 16. elastic plate; 17. screw rod; 18. first gear; 19. second gear; 20. rotating shaft; 21. screw cap; 22. limiting slider; 23. connecting frame; 24. support plate; 25. rubber pad; 26. limiting slide groove; 27. guide column; 28. through groove. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example

[0031] like Figure 1 As shown, the shock absorbing and noise reducing device for an impact drill proposed by the utility model comprises an impact drill body 1, and also comprises a fixed head 2 installed at the front end of the impact drill body 1, a drill bit 3 is connected to the fixed head 2, and a sound absorbing cover 8 is sleeved on the surface of the drill bit 3, and the sound absorbing cover 8 can absorb the sound volume when the drill bit 3 rotates to drill holes, so as to reduce the noise;

[0032] In addition, a transmission box 4 is fixedly installed on the top of the impact drill body 1, a base block 5 is fixedly installed on the bottom end of the impact drill body 1, a handle 6 is fixedly welded to the bottom end of the base block 5, and a shock-absorbing rubber pad 7 is bonded to the outer surface of the handle 6. By holding the shock-absorbing rubber pad 7 on the handle 6, the vibration generated by a certain impact drill body 1 can be reduced.

[0033] like Figure 1 and Figure 2 As shown, the device also includes a stabilizing support device, which is arranged at the bottom end of the base block 5 for shock stabilization of the impact drill body 1. The stabilizing support device includes a limiting slide groove 26 opened at the bottom of the base block 5, and a limiting slider 22 is slidably installed in the limiting slide groove 26. The limiting slider 22 can slide back and forth in the limiting slide groove 26;

[0034] In addition, a connecting frame 23 is fixedly installed on the limit slider 22, and a support plate 24 is connected to the connecting frame 23. A rubber pad 25 is connected to one side of the support plate 24. The rubber pad 25 can reduce friction and further protect the support plate 24. When the drill bit 3 is drilling a hole, the limit slider 22 can drive the support plate 24 to support it against the wall, so that the impact drill body 1 has a support part, and the reaction force of the drill bit 3 can be partially offset by the support plate 24, making the use of the impact drill body 1 more stable.

[0035] like Figure 2-4 As shown, the device also includes a protective device, which is arranged in the transmission box 4 for noise reduction protection of the impact drill body 1, and the protective device includes a slide groove 9 fixedly installed on the inner wall of the bottom of the transmission box 4, a slider 10 is slidably installed in the slide groove 9, and a fixing rod 11 is fixedly installed on the slider 10. A through groove 28 for the fixing rod 11 to pass through is opened on one side of the transmission box 4, and a connecting ring 12 is installed on the fixing rod 11. A protective shell 13 is connected to the connecting ring 12. The protective shell 13 is made of sound insulation material and has a good sound insulation effect. The protective shell 13 is sleeved on the surface of the drill bit 3, so that the slider 10 drives the movement of the fixing rod 11, so that the protective shell 13 abuts against one side of the wall, so that the drill bit 3 is wrapped by the protective shell 13 when drilling, so that the flying dust particles are all located in the protective shell 13, so that the cleanliness of the on-site work is maintained, and the safe working environment of the operator is also protected;

[0036] Furthermore, a moving device is provided in the chute 9, and the moving device includes a screw rod 17 rotatably installed in the chute 9 and threadedly connected to the slider 10, one end of the screw rod 17 penetrates the outer wall of the chute 9, and a first gear 18 is fixedly installed on one end of the screw rod 17, and a second gear 19 is meshed on the first gear 18, and the rotation of the second gear 19 can drive the rotation of the first gear 18;

[0037] Furthermore, a rotating shaft 20 is rotatably installed on the top of the transmission box 4, a screw cap 21 is fixedly connected to the top of the rotating shaft 20, and the bottom end of the rotating shaft 20 is fixedly connected to the second gear 19. The screw cap 21 is screwed to rotate the rotating shaft 20, and the rotation of the rotating shaft 20 drives the rotation of the second gear 19. The rotation of the second gear 19 drives the rotation of the first gear 18, so that the screw rod 17 rotates, and the slider 10 can drive the protective shell 13 to move and adjust the distance position. As the drill bit 3 penetrates into the wall, adjustments are made to ensure that the protective shell 13 is always against the wall.

[0038] It is worth mentioning that a baffle 14 is fixedly installed on the outer wall of the protective shell 13. The baffle 14 can prevent dust particles that enter the protective shell 13 from falling to the ground when the protective shell 13 retracts, thereby maintaining the cleanliness of the site. A guide column 27 is slidably installed on the inner wall of the protective shell 13. A spring 15 is sleeved on the guide column 27, and an elastic plate 16 is connected to the guide column 27. The spring 15 cooperates with the elastic force of the elastic plate 16 to prevent flying particles from continuously impacting and wearing the protective shell 13, thereby extending the service life of the protective shell 13.

[0039] Working principle: During operation, the movement of the limit slider 22 is used to drive the support plate 24 to lean against the wall, so that the impact drill body 1 has a support member, and the reaction force of the drill bit 3 can be partially offset by the support plate 24, making the use of the impact drill body 1 more stable, and combined with the shock-absorbing rubber pad 7 on the handle 6, the overall vibration of the impact drill body 1 can be effectively reduced, and the rotating shaft 20 is rotated by twisting the screw cap 21, and the rotation of the rotating shaft 20 drives the second gear 19 to rotate, and further the first gear 18 drives the screw rod 17 to rotate, so that the slider 10 drives the protective shell 13 to move, so that the protective shell 13 can always lean against the wall, so that all the particles splashed when the drill bit 3 drills a hole are located in the protective shell 13, which not only prevents the damage to the operator caused by the splashing of particles, but also maintains the cleanliness of the on-site working environment, and can make the dust particles concentrated in the protective shell 13 for subsequent processing, and the protective shell 13 cooperates with the sound insulation and sound absorption of the sound absorbing cover 8, which can effectively reduce the noise generated.

[0040] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A vibration and noise reduction device for an impact drill, comprising an impact drill body (1), characterized in that: Also includes: A fixed machine head (2) is mounted on the front end of the impact drill body (1), a drill bit (3) is connected to the fixed machine head (2), a sound absorbing cover (8) is sleeved on the surface of the drill bit (3), a transmission box (4) is fixedly mounted on the top of the impact drill body (1), and a base block (5) is fixedly mounted on the bottom end of the impact drill body (1); A stabilizing support device, the stabilizing support device being arranged at the bottom end of the base block (5) and used for shock absorbing and stabilizing the impact drill body (1); A protective device is arranged in a transmission box (4) and is used for noise reduction protection of the impact drill body (1).

2. The vibration and noise reduction device for impact drill according to claim 1, characterized in that: A handle (6) is fixedly welded to the bottom end of the base block (5), and a shock-absorbing rubber pad (7) is bonded to the outer surface of the handle (6).

3. The vibration reduction and noise reduction device for impact drill according to claim 1, characterized in that: The stabilizing support device comprises a limiting slide groove (26) provided at the bottom of the base block (5), a limiting slider (22) being slidably mounted in the limiting slide groove (26), a connecting frame (23) being fixedly mounted on the limiting slider (22), a supporting plate (24) being connected to the connecting frame (23), and a rubber pad (25) being connected to one side of the supporting plate (24).

4. The vibration and noise reduction device for impact drill according to claim 1, characterized in that: The protective device comprises a slide groove (9) fixedly mounted on the inner wall of the bottom of the transmission box (4), a slider (10) being slidably mounted in the slide groove (9), a fixing rod (11) being fixedly mounted on the slider (10), a through groove (28) for the fixing rod (11) to pass through being opened on one side of the transmission box (4), a connecting ring (12) being mounted on the fixing rod (11), a protective shell (13) being connected to the connecting ring (12), the protective shell (13) being sleeved on the surface of the drill bit (3), and a moving device being arranged in the slide groove (9).

5. The vibration and noise reduction device for impact drilling according to claim 4, characterized in that: The moving device comprises a screw rod (17) rotatably mounted in the slide groove (9) and threadably connected to the slider (10); one end of the screw rod (17) penetrates the outer wall of the slide groove (9); a first gear (18) is fixedly mounted on one end of the screw rod (17); a second gear (19) is meshed with the first gear (18); a rotating shaft (20) is rotatably mounted on the top of the transmission box (4); a screw cap (21) is fixedly connected to the top of the rotating shaft (20); and a bottom end of the rotating shaft (20) is fixedly connected to the second gear (19).

6. The vibration reduction and noise reduction device for impact drill according to claim 4, characterized in that: A baffle (14) is fixedly mounted on the outer wall of the protective shell (13), a guide column (27) is slidably mounted on the inner wall of the protective shell (13), a spring (15) is sleeved on the guide column (27), and an elastic plate (16) is connected to the guide column (27).

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