A new type of impact pneumatic hammer device

Abstract

This utility model discloses a novel impact-type air hammer device. The key technical features include an air hammer body comprising an upper cover, a vibrating body with a cavity, and a base. The upper cover and base are fixedly connected to both ends of the vibrating body. The vibrating body has a hammer core, which, in conjunction with the vibrating body, divides the cavity into an upper chamber and a lower chamber. The side wall of the vibrating body has an air inlet for connecting an air pump and an exhaust port for balancing internal air pressure. The air inlet connects to the upper chamber, and the exhaust port connects to the lower chamber. The base has several fixing holes for fixing, and each fixing hole is fitted with a corresponding shock-absorbing sleeve. This utility model, through the use of shock-absorbing sleeves, effectively absorbs vibration and impact, reducing the loosening and failure of bolts at connection points due to high-frequency vibration, thus increasing reliability. Simultaneously, the shock-absorbing sleeves reduce friction between the bolts and fixing holes at connection points, reducing wear and extending service life.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic hammer device technology, and more specifically to a novel impact pneumatic hammer device. Background Technology

[0002] Currently, its core principle is to generate high-frequency vibration force by driving the piston to reciprocate through compressed air. It is widely used in industrial scenarios to solve problems such as material blockage and adhesion. Early pneumatic vibrators mostly relied on spring reset mechanisms, but under high-frequency impact scenarios, springs are prone to fatigue and breakage, resulting in decreased impact force, frequent maintenance, and high energy consumption. Modern reciprocating air hammers have solved this problem through springless pressure differential drive technology, allowing compressed air to directly drive the piston to reciprocate.

[0003] However, there are still some defects in the above-mentioned existing technologies. Some existing vibrators often use bolts to fix the vibrator to the part that needs to be vibrated. Under long-term vibration environment, the bolts and other connecting parts are prone to frictional wear and connection failure, resulting in loosening or even accidental detachment of the vibrator, which affects the reliability of the equipment. Moreover, the vibration environment can easily cause the bolts to rotate relative to each other, resulting in loosening of the connection. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a novel impact-type air hammer device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a pneumatic hammer body, which comprises an upper cover, a vibrating body with a cavity, and a base. The upper cover and the base are respectively fixedly connected to both ends of the vibrating body. The vibrating body is provided with a hammer core, which, in conjunction with the vibrating body, divides the cavity into an upper cavity and a lower cavity. The side wall of the vibrating body is provided with an air inlet for connecting an air pump and an exhaust port for balancing the internal air pressure. The air inlet is connected to the upper cavity, and the exhaust port is connected to the lower cavity. The base is provided with a plurality of fixing holes for fixing, and the fixing holes are provided with corresponding shock-absorbing sleeves.

[0006] The present invention is further configured such that: the shock-absorbing sleeve includes a bushing body adapted to the inner diameter of the fixing hole; the bushing body is provided with a radially extending shock-absorbing part near the end face; and a plurality of sheet-like protrusions A with clamping protrusions B are axially extended near the bottom surface; and the bottom surface of the fixing hole is provided with an annular recessed platform adapted to the position of the clamping protrusions B.

[0007] The present invention is further configured such that the shock-absorbing part is provided with a plurality of arc-shaped plates extending from the edge to the center.

[0008] The present invention is further configured such that: the hammer core is a stepped shaft, the hammer core shaft head is vertically provided with a blind hole, and the side of the hammer core is provided with through holes A and B from top to bottom, and the through holes A and B intersect with the blind hole.

[0009] The present invention is further configured such that the surface of the hammer core is provided with a plurality of oil storage grooves.

[0010] The present invention is further configured such that a shock-absorbing washer is provided between the upper cover and the vibrating body.

[0011] In summary, this utility model has the following beneficial effects: The shock-absorbing sleeve effectively absorbs vibration and impact, reducing the risk of loosening and failure of bolts at the connection point due to high-frequency vibration, thus increasing reliability. Simultaneously, the shock-absorbing sleeve reduces friction between the bolts and the fixing holes at the connection point, reducing wear and extending service life. The arc-shaped plate presses the bolts together during tightening, preventing bolt rotation and reducing the risk of loosening and failure due to vibration, thereby improving reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0013] Figure 2 This is a cross-sectional view of this embodiment;

[0014] Figure 3 This is a partially enlarged cross-sectional view at point A in this embodiment;

[0015] Figure 4 This is a schematic diagram of the shock-absorbing sleeve structure in this embodiment;

[0016] Reference numerals: 1. Air hammer body; 11. Top cover; 12. Vibrating body; 121. Cavity; 122. Upper cavity; 123. Lower cavity; 13. Base; 131. Fixing hole; 1311. Annular recess; 2. Hammer core; 21. Blind hole; 22. Through hole A; 23. Through hole B; 24. Oil reservoir; 4. Air inlet; 5. Exhaust port; 6. Shock-absorbing sleeve; 61. Bushing body; 62. Shock-absorbing part; 621. Arc-shaped plate; 63. Plate-shaped protrusion A; 631. Clamping protrusion B; 7. Shock-absorbing washer. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This embodiment discloses a novel impact-type pneumatic hammer device, such as... Figures 1 to 3As shown, the device includes a pneumatic hammer body 1, which includes an upper cover 11, a vibrating body 12 with a cavity 121, and a base 13. The upper cover 11 and the base 13 are fixedly connected to both ends of the vibrating body 12. The vibrating body 12 is provided with a hammer core 2. The hammer core 2 cooperates with the vibrating body 12 to divide the cavity 121 into an upper cavity 122 and a lower cavity 123. The side wall of the vibrating body 12 is provided with an air inlet 4 for connecting an air pump and an exhaust port 5 for balancing the internal air pressure. The air inlet 4 is connected to the upper cavity 122, and the exhaust port 5 is connected to the lower cavity 123. When the hammer core 2 moves downward, the gas in the lower cavity 123 will be discharged from the exhaust port 5. The base 13 is provided with a plurality of fixing holes 131 for fixing. The fixing holes 131 are provided with corresponding shock-absorbing sleeves 6. The shock-absorbing sleeves 6 are used to reduce the vibration impact on the connecting bolts of the fixing holes 131 when the pneumatic hammer body 1 is working.

[0019] like Figure 4 As shown, the damping sleeve 6 includes a bushing body 61 adapted to the inner diameter of the fixing hole 131. The bushing body 61 is disposed between the tightening bolt and the fixing hole 131. When the air hammer body 1 is working, it is used to reduce the fatigue wear caused by the mutual friction between the tightening bolt and the fixing hole 131. The bushing body 61 is provided with a radially extending damping part 62 near the end face. The damping part 62 is close to the upper end face and will contact the bolt used for tightening, reducing the contact between the bolt and the base 13. It plays a buffering role between the bolt and the base 13, reducing the impact received by the bolt. Near the bottom surface, there are a number of plate-shaped protrusions A63 with locking protrusions B631 extending axially. The bottom surface of the fixing hole 131 is provided with an annular recess 1311 adapted to the position of the locking protrusions B631. The locking protrusion B631 can cooperate with the annular recess 1311 to ensure that the shock-absorbing sleeve 6 is properly positioned in the fixing hole 131; the sheet-like protrusion A63 is elastic, so that when the shock-absorbing sleeve 6 is positioned in the fixing hole 131, the locking protrusion B631 can easily cooperate with the annular recess 1311 through the fixing hole 131.

[0020] To further improve the design, the shock-absorbing part 62 is provided with several arc-shaped plates 621 extending from the edge to the center. These arc-shaped plates 621 are evenly distributed around the bolt. When the bolt is tightened, the arc-shaped plates 621 are compressed and undergo elastic deformation, buffering the impact. When compressed, the arc-shaped plates 621 press the bolt inward, reducing bolt slippage and vibration, making the tightened bolt less prone to loosening. When the bolt experiences vibration, it further compresses the arc-shaped plates 621, increasing their clamping force and effectively reducing bolt loosening and failure due to vibration.

[0021] Further improvements include a stepped shaft for the hammer core 2, a blind hole 21 vertically arranged at the shaft head of the hammer core 2, and through holes A22 and B23 arranged from top to bottom on the side of the hammer core 2, with the through holes A22 and B23 intersecting with the blind hole 21. This invention connects the air passage through the intersection of through holes A22 and B23 with the blind hole 21. When the invention is started, the hammer core 2 is at its lowest movable end. The through hole B23 is connected to the lower cavity 123. The through hole A22 is blocked by the inner wall of the cavity 121. When gas enters the air inlet 4, the hammer core 2 is pushed upward by the air pressure. The gas in the upper cavity 122 will pass through the through hole B23 and then to the lower cavity 123 and be discharged from the air outlet. When the hammer core 2 moves upward to a certain limit, the through hole B23 is blocked by the inner wall of the cavity 121. The through hole A22 connects the upper and lower spaces of the upper cavity 122 step shaft. The upper end face of the hammer core 2 is subjected to greater air pressure and moves downward. This reciprocating motion causes the invention to vibrate when air enters through the air inlet 4.

[0022] Furthermore, the hammer core 2 is provided with several oil storage grooves 24 on its surface. The oil storage grooves 24 can serve as storage spaces for lubricating oil, ensuring a continuous supply of lubricant to the hammer core 2 during operation, reducing friction and wear, and thus extending bearing life.

[0023] To further improve the design, a shock-absorbing washer 7 is provided between the upper cover 11 and the vibrating body 12. The shock-absorbing washer 7 can absorb vibration and reduce the impact of vibration on the upper cover 11 and the vibrating body 12. The shock-absorbing washer 7, the vibrating body 12 and the upper cover 11 form a sealing surface, which increases airtightness and prevents air leakage.

[0024] Working principle of this utility model

[0025] During installation, align the shock-absorbing sleeve 6 with the fixing hole 131. Since the plate-shaped protrusion A63 is elastic, the clamping protrusion B631 can be easily placed into the fixing hole 131, allowing the shock-absorbing sleeve 6 to be easily pushed into the fixing hole 131. Push the shock-absorbing sleeve 6 to make the clamping protrusion B631 engage with the annular recess 1311, and the shock-absorbing sleeve 6 will be firmly set in the fixing hole 131. Place the base 13 close to the surface to be installed, and tighten the bolt through the fixing hole 131. When the bolt is tightened, it will press the shock-absorbing part 62, causing the arc-shaped plate 621 to deform. The deformed arc-shaped plate 621 will press the bolt, resulting in a stable and reliable installation state, making it less likely to fall off during operation.

[0026] When disassembling this utility model, reversing the bolt reduces the pressure on the arc-shaped plate 621, thus reducing the clamping force on the bolt and allowing the bolt to be easily removed, making this utility model easy to take off.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of impact pneumatic hammer device comprising a pneumatic hammer body (1), characterized in that: The air hammer body (1) includes an upper cover (11), a vibrating body (12) with a cavity (121), and a base (13). The upper cover (11) and the base (13) are fixedly connected to both ends of the vibrating body (12). The vibrating body (12) is provided with a hammer core (2). The hammer core (2) cooperates with the vibrating body (12) to divide the cavity (121) into an upper cavity (122) and a lower cavity (123). The side wall of the vibrating body (12) is provided with an air inlet (4) for connecting an air pump and an exhaust port (5) for balancing the internal air pressure. The air inlet (4) is connected to the upper cavity (122), and the exhaust port (5) is connected to the lower cavity (123). The base (13) is provided with a plurality of fixing holes (131) for fixing. The fixing holes (131) are provided with corresponding shock-absorbing sleeves (6).

2. The novel impact-type pneumatic hammer device according to claim 1, characterized in that: The shock-absorbing sleeve (6) includes a bushing body (61) adapted to the inner diameter of the fixing hole (131). The bushing body (61) is provided with a radially extending shock-absorbing part (62) near the end face, and a plurality of sheet-like protrusions A (63) with locking protrusions B (631) extending axially near the bottom surface. The bottom surface of the fixing hole (131) is provided with an annular recess (1311) adapted to the position of the locking protrusions B (631).

3. The novel impact-type pneumatic hammer device according to claim 2, characterized in that: The shock-absorbing part (62) is provided with a plurality of arc-shaped plates (621) extending from the edge to the center.

4. The novel impact-type pneumatic hammer device according to claim 1, characterized in that: The hammer core (2) is a stepped shaft. A blind hole (21) is vertically provided at the shaft head of the hammer core (2). A through hole A (22) and a through hole B (23) are provided on the side of the hammer core (2) from top to bottom. The through holes A (22) and B (23) intersect with the blind hole (21).

5. A novel impact-type pneumatic hammer device according to claim 4, characterized in that: The surface of the hammer core (2) is provided with several oil storage grooves (24).

6. The novel impact-type pneumatic hammer device according to claim 1, characterized in that: A shock-absorbing washer (7) is provided between the upper cover (11) and the vibrating body (12).

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