Self-lubricating light hammer

Abstract

The utility model relates to light hammer technical field, concretely is a kind of self-lubricating light hammer, including shell, drive mechanism is arranged on the shell, the drive mechanism includes swing lever bearing, the drive mechanism is used to drive swing lever bearing rotation reciprocating;Sealing sleeve is arranged on the inner wall of the shell, the inner wall of the sealing sleeve is connected with aluminium cylinder by piston, hinging mechanism is arranged between aluminium cylinder and swing lever bearing, the hinging mechanism includes: cylindrical shaft, the connecting rod sliding connection of cylindrical shaft and swing lever bearing top, the outer wall of cylindrical shaft is rotatably connected with aluminium cylinder, aluminium cylinder is provided with oil storage ring groove, oil storage chamber is set up on the inner wall of cylindrical shaft.The utility model is provided with hinging mechanism, utilizes the oil storage chamber in cylindrical shaft, oil storage sponge and oil guide hole, realizes the sustained lubrication to swing lever bearing connecting rod sliding contact surface and cylindrical shaft and aluminium cylinder rotating contact surface, effectively solves the problem that lubricating oil is easily thrown under high-speed reciprocating motion.

Description

Technical Field

[0001] This utility model relates to the field of light hammer technology, specifically a self-lubricating light hammer. Background Technology

[0002] The battery pack provides power, driving the motor to rotate. The motor drives the small bevel gear on the device to drive the large bevel gear, which in turn drives the rocker arm bearing assembly to rotate. The rocker arm bearing drives the aluminum cylinder to reciprocate through the cylindrical pin. The hammer inside the aluminum cylinder generates impact energy under air pressure, striking the impact rod. The kinetic energy is then transferred to the working head through the impact rod, thus achieving the drilling principle.

[0003] When the rocker arm bearing drives the aluminum cylinder to reciprocate through the cylindrical pin, the reciprocating speed here is about 5000 r / min. The speed is high and the temperature is high. There is rotational motion between the cylindrical pin and the aluminum cylinder. However, the structure here is open. The lubricating oil is quickly shaken off under high speed. In addition, the heat generated by the reciprocating motion between the aluminum cylinder and the rotating sleeve is transferred to the cylindrical pin, causing the lubricating oil film here to evaporate quickly. This causes dry friction between the cylindrical pin and the aluminum cylinder, causing the entire motion system to fail.

[0004] In view of this, we propose a self-lubricating light hammer. Utility Model Content

[0005] The purpose of this utility model is to provide a self-lubricating light hammer. This self-lubricating light hammer solves the problem that when the rocker arm bearing drives the aluminum cylinder to reciprocate at high speed through the cylindrical pin, the open structure causes the lubricating oil to be easily lost and the high temperature accelerates the evaporation of the oil film, resulting in dry friction failure between the cylindrical pin and the aluminum cylinder.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A self-lubricating light hammer includes a housing, on which a driving mechanism is provided. The driving mechanism includes a rocker arm bearing, which is used to drive the rocker arm bearing to rotate reciprocally. A sealing sleeve is provided on the inner wall of the housing, and an aluminum cylinder is piston-connected to the inner wall of the sealing sleeve. A hinge mechanism is provided between the aluminum cylinder and the rocker arm bearing. The hinge mechanism includes a cylindrical shaft, which is slidably connected to a connecting rod at the top of the rocker arm bearing. The outer wall of the cylindrical shaft is rotatably connected to the aluminum cylinder. An oil storage ring groove is provided on the aluminum cylinder. An oil storage chamber is formed on the inner wall of the cylindrical shaft. An oil storage sponge is provided on the inner wall of the oil storage chamber. A retaining spring is provided on the inner wall of the oil storage chamber to fix the oil storage sponge. A first cylindrical pin guide hole and a second cylindrical pin guide hole are formed on the inner wall of the cylindrical shaft. A gasket is sleeved on the cylindrical shaft. A lubricating oil replenishment mechanism is provided on the cylindrical shaft to replenish lubricating oil to the oil storage sponge.

[0008] Preferably, the lubricating oil replenishment mechanism includes: an oil delivery trough, an oil delivery pipe, and a one-way valve. The oil delivery trough is formed on the inner wall of the cylindrical shaft, and an oil delivery pipe is connected to the oil delivery trough. A one-way valve is installed on the oil delivery pipe. One end of the oil delivery trough is connected to an oil storage chamber, and the other end of the oil delivery trough is connected to the oil delivery pipe.

[0009] Preferably, a drive motor is provided on the inner wall of the housing, a main shaft is rotatably connected to the inner wall of the housing, a large bevel gear is provided on the main shaft, a small bevel gear is fixedly connected to the output shaft of the drive motor, the small bevel gear meshes with the large bevel gear, an oblique annular groove is provided on the main shaft, and a rocker arm bearing is connected to the oblique annular groove.

[0010] Preferably, the side of the oil-storing sponge closest to the retaining ring is a rigid plate, and the rigid plate is connected to the oil-storing ring groove piston.

[0011] Preferably, the retaining ring is a wave-shaped retaining ring, and the inner wall of the oil reservoir has an annular groove that matches the wave-shaped retaining ring.

[0012] Preferably, the two ends of the gasket are provided with anti-slip textures, and the textures are distributed in concentric circles.

[0013] Preferably, a bushing is provided at the end of the main shaft, and the outer periphery of the bushing is connected to the inner wall of the housing through a bearing seat.

[0014] By employing the above technical solution, this utility model provides a self-lubricating lightweight hammer. It possesses at least the following beneficial effects:

[0015] 1. This utility model, by setting up a hinge mechanism, utilizes the oil storage chamber, oil storage sponge and oil guide hole in the cylindrical shaft to achieve continuous lubrication of the sliding contact surface of the rocker arm bearing connecting rod and the rotating contact surface between the cylindrical shaft and the aluminum cylinder, effectively solving the problem of easy loss of lubricating oil under high-speed reciprocating motion.

[0016] 2. This utility model incorporates a lubrication system, including an oil delivery tank, an oil delivery pipe, and a one-way valve, which can directionally replenish lubricating oil to the oil storage chamber and prevent backflow, ensuring that the oil storage chamber always maintains a sufficient oil volume, avoiding dry friction of friction parts due to loss of lubricating medium, and improving the reliability of equipment operation. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell in this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-section of the sealing sleeve in this utility model;

[0021] Figure 4 This is a schematic diagram of the inclined annular groove in this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the aluminum cylinder portion of this utility model;

[0023] Figure 6 This is a structural schematic diagram of the cross-section of the cylindrical shaft in this utility model.

[0024] In the diagram: 22. Housing; 1. Drive motor; 2. Main shaft; 3. Small bevel gear; 4. Large bevel gear; 5. Angled annular groove; 6. Rocker arm bearing; 7. Hinge mechanism; 71. Cylindrical shaft; 72. Oil reservoir annular groove; 73. Oil reservoir; 74. Oil reservoir sponge; 75. Snap ring; 76. First cylindrical pin oil guide hole; 77. Second cylindrical pin oil guide hole; 78. Gasket; 8. Aluminum cylinder; 9. Sealing sleeve; 101. Oil delivery groove; 102. Oil delivery pipe; 103. One-way valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 6As shown, this utility model provides a technical solution: a self-lubricating light hammer, including a housing 22, a driving mechanism on the housing 22, the driving mechanism including a rocker arm bearing 6, the driving mechanism being used to drive the rocker arm bearing 6 to rotate and reciprocate; a sealing sleeve 9 is provided on the inner wall of the housing 22, an aluminum cylinder 8 is piston-connected to the inner wall of the sealing sleeve 9, a hinge mechanism 7 is provided between the aluminum cylinder 8 and the rocker arm bearing 6, the hinge mechanism 7 including: a cylindrical shaft 71, the cylindrical shaft 71 being slidably connected to the connecting rod at the top of the rocker arm bearing 6, the outer wall of the cylindrical shaft 71 being rotatably connected to the aluminum cylinder 8, an oil storage ring groove 72 being provided on the aluminum cylinder 8, and an oil storage chamber 7 being formed on the inner wall of the cylindrical shaft 71. 3. An oil-storing sponge 74 is provided on the inner wall of the oil storage chamber 73, and a retaining spring 75 is provided on the inner wall of the oil storage chamber 73 to fix the oil-storing sponge 74. A first cylindrical pin guide hole 76 and a second cylindrical pin guide hole 77 are provided on the inner wall of the cylindrical shaft 71. A gasket 78 is sleeved on the cylindrical shaft 71. The rocker arm bearing 6 is slidably connected to the cylindrical shaft 71 through the top connecting rod. When the drive mechanism drives the rocker arm bearing 6 to reciprocate, the cylindrical shaft 71 transmits power to the aluminum cylinder 8, pushing it to make piston movement along the inner wall of the sealing sleeve 9. An oil storage ring groove 72 is provided on the aluminum cylinder 8. An oil storage chamber 73 is provided on the inner wall of the cylindrical shaft 71, and the oil-storing sponge 74 is built in and fixed by the retaining spring 75. Lubricating oil is continuously transported from the oil reservoir 73 to the sliding contact surface between the cylindrical shaft 71 and the rocker arm bearing 6, and the rotating contact surface between the cylindrical shaft 71 and the aluminum cylinder 8 through the first cylindrical pin guide hole 76 and the second cylindrical pin guide hole 77. A lubricating oil replenishment mechanism is provided on the cylindrical shaft 71, which is used to replenish the lubricating oil to the oil reservoir sponge 74.

[0027] The lubricating oil replenishment mechanism includes: an oil delivery trough 101, an oil delivery pipe 102, and a one-way valve 103. The oil delivery trough 101 is located on the inner wall of the cylindrical shaft 71. The oil delivery pipe 102 is connected to the oil delivery trough 101, and the one-way valve 103 is installed on the oil delivery pipe 102. One end of the oil delivery trough 101 is connected to the oil storage chamber 73, and the other end of the oil delivery trough 101 is connected to the oil delivery pipe 102. External lubricating oil enters the system through the oil delivery trough 101 and is directionally delivered to the oil storage chamber 73 on the inner wall of the cylindrical shaft 71 via the oil delivery pipe 102. The oil delivery trough 101 serves as a transition channel, connecting the external oil supply source and the oil storage chamber 73 to form the replenishment inlet of the closed-loop lubrication system. The one-way valve 103 is installed on the oil delivery pipe 102, allowing lubricating oil to flow only in the direction of "oil delivery pipe 102 → oil delivery trough 101 → oil storage chamber 73", preventing the lubricating oil in the oil storage chamber 73 from flowing back due to equipment vibration or pressure changes. This design ensures that the oil reservoir 73 always has a sufficient amount of oil, preventing dry friction at the friction points due to loss of lubricating medium.

[0028] A drive motor 1 is mounted on the inner wall of the housing 22, and a main shaft 2 is rotatably connected to the inner wall of the housing 22. A large bevel gear 4 is mounted on the main shaft 2, and a small bevel gear 3 is fixedly connected to the output shaft of the drive motor 1. The small bevel gear 3 meshes with the large bevel gear 4. An oblique annular groove 5 is provided on the main shaft 2, and a rocker arm bearing 6 is connected to the oblique annular groove 5. The drive motor 1 is fixed to the inner wall of the housing 22, and its output shaft drives the small bevel gear 3 to rotate. The small bevel gear 3 meshes with the large bevel gear 4 on the main shaft 2, transmitting power to the main shaft 2 through gear transmission, thereby reducing the rotational speed and amplifying the torque. When the main shaft 2 rotates, the oblique annular groove 5 on its surface rotates synchronously with the main shaft 2. The oblique annular structure of the oblique annular groove 5 forces the embedded end of the rocker arm bearing 6 to reciprocate along the groove trajectory, while the other end of the rocker arm bearing 6 is constrained by the cylindrical shaft 71, causing the cylindrical shaft 71 to drive the aluminum cylinder 8 to reciprocate within the sealing sleeve 9.

[0029] The side of the oil reservoir sponge 74 closest to the retaining ring 75 is a rigid plate, which is connected to the piston of the oil reservoir ring groove 72. The retaining ring 75 is a wave-shaped retaining ring. The inner wall of the oil reservoir 73 is provided with an annular groove that matches the wave-shaped retaining ring. The two ends of the gasket 78 are provided with anti-slip textures, which are distributed in concentric circles. The end of the main shaft 2 is provided with a bushing, and the outer circumference of the bushing is connected to the inner wall of the housing 22 through a bearing seat.

[0030] In use, the self-lubricating light hammer of this invention has a drive motor 1 fixed to the inner wall of the housing 22, whose output shaft drives the small bevel gear 3 to rotate. The small bevel gear 3 meshes with the large bevel gear 4 on the main shaft 2, transmitting power to the main shaft 2 through gear transmission, while simultaneously reducing the rotational speed and amplifying the torque. When the main shaft 2 rotates, the oblique annular groove 5 on its surface rotates synchronously with the main shaft 2. The oblique annular structure of the oblique annular groove 5 forces the embedded end of the rocker arm bearing 6 to reciprocate along the groove trajectory, while the other end of the rocker arm bearing 6 is constrained by the cylindrical shaft 71, causing the cylindrical shaft 71 to drive the aluminum cylinder 8 to reciprocate within the sealing sleeve 9. The rocker arm bearing 6 is slidably connected to the cylindrical shaft 71 via a top connecting rod. When the drive mechanism drives the rocker arm bearing 6 to reciprocate, the cylindrical shaft 71 transmits power to the aluminum cylinder 8, pushing it to move like a piston along the inner wall of the sealing sleeve 9. The aluminum cylinder 8 is provided with an oil storage ring groove 72, and the inner wall of the cylindrical shaft 71 has an oil storage chamber 73, which contains an oil storage sponge 74 and is fixed by a snap ring 75. Lubricating oil is continuously delivered from the oil storage chamber 73 to the sliding contact surface between the cylindrical shaft 71 and the rocker arm bearing 6 connecting rod, and the rotational contact surface between the cylindrical shaft 71 and the aluminum cylinder 8, through the first cylindrical pin oil guide hole 76 and the second cylindrical pin oil guide hole 77.

[0031] External lubricating oil enters the system through the oil delivery channel 101 and is then directionally delivered to the oil storage chamber 73 on the inner wall of the cylindrical shaft 71 via the oil delivery pipe 102. The oil delivery channel 101 serves as a transition channel, connecting the external oil supply source with the oil storage chamber 73, forming the replenishment inlet of the closed-loop lubrication system. A one-way valve 103 is installed on the oil delivery pipe 102, allowing lubricating oil to flow only in the direction of "oil delivery pipe 102 → oil delivery channel 101 → oil storage chamber 73," preventing the lubricating oil in the oil storage chamber 73 from flowing back due to equipment vibration or pressure changes. This design ensures that the oil storage chamber 73 always maintains a sufficient oil level, preventing dry friction at friction points caused by lubricant loss.

[0032] 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.

[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating lightweight hammer, comprising a housing (22), characterized in that: A drive mechanism is provided on the housing (22), the drive mechanism includes a rocker arm bearing (6), and the drive mechanism is used to drive the rocker arm bearing (6) to rotate and reciprocate. A sealing sleeve (9) is provided on the inner wall of the housing (22), and an aluminum cylinder (8) is connected to the inner wall of the sealing sleeve (9) via a piston. A hinge mechanism (7) is provided between the aluminum cylinder (8) and the rocker arm bearing (6), and the hinge mechanism (7) includes: A cylindrical shaft (71) is slidably connected to the connecting rod at the top of the rocker arm bearing (6). The outer wall of the cylindrical shaft (71) is rotatably connected to the aluminum cylinder (8). An oil storage ring groove (72) is provided on the aluminum cylinder (8). An oil storage chamber (73) is provided on the inner wall of the cylindrical shaft (71). An oil storage sponge (74) is provided on the inner wall of the oil storage chamber (73). A retaining ring (75) is provided on the inner wall of the oil storage chamber (73) to fix the oil storage sponge (74). A first cylindrical pin guide hole (76) and a second cylindrical pin guide hole (77) are provided on the inner wall of the cylindrical shaft (71). A gasket (78) is sleeved on the cylindrical shaft (71). The cylindrical shaft (71) is provided with a lubricating oil replenishment mechanism, which is used to replenish the lubricating oil in the oil storage sponge (74).

2. The self-lubricating light hammer according to claim 1, characterized in that: The lubricating oil replenishment mechanism includes: an oil delivery tank (101), an oil delivery pipe (102), and a one-way valve (103). The oil delivery tank (101) is located on the inner wall of the cylindrical shaft (71). The oil delivery tank (101) is connected to the oil delivery pipe (102), and the one-way valve (103) is installed on the oil delivery pipe (102). One end of the oil delivery tank (101) is connected to the oil storage chamber (73), and the other end of the oil delivery tank (101) is connected to the oil delivery pipe (102).

3. The self-lubricating light hammer according to claim 2, characterized in that: A drive motor (1) is provided on the inner wall of the housing (22). A main shaft (2) is rotatably connected to the inner wall of the housing (22). A large bevel gear (4) is provided on the main shaft (2). A small bevel gear (3) is fixedly connected to the output shaft of the drive motor (1). The small bevel gear (3) meshes with the large bevel gear (4). An oblique annular groove (5) is provided on the main shaft (2). A rocker arm bearing (6) is connected to the oblique annular groove (5).

4. The self-lubricating light hammer according to claim 3, characterized in that: The side of the oil storage sponge (74) near the retaining ring (75) is a hard plate, and the hard plate is connected to the piston of the oil storage ring groove (72).

5. The self-lubricating light hammer according to claim 3, characterized in that: The retaining ring (75) is a wave-shaped retaining ring, and the inner wall of the oil reservoir (73) is provided with an annular groove that is adapted to the wave-shaped retaining ring.

6. The self-lubricating light hammer according to claim 3, characterized in that: The two ends of the pad (78) are provided with anti-slip textures, which are distributed in concentric circles.

7. The self-lubricating light hammer according to claim 3, characterized in that: The end of the main shaft (2) is provided with a bushing, and the outer periphery of the bushing is connected to the inner wall of the housing (22) through a bearing seat.

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