Double-swing-rod mechanism of electric pick

Abstract

The utility model provides a double-swing-rod mechanism of an electric pick, which comprises a connecting seat arranged in an electric pick shell and a double-swing-rod driving assembly arranged on the connecting seat, a hammer rod sleeve is rotationally arranged in one end of the connecting seat, a connecting rod is movably arranged in the hammer rod sleeve, and a hammer rod is arranged in the connecting rod. One end of the connecting rod extends out of the hammer rod sleeve and is rotationally provided with a piston; the double-swing-rod driving assembly comprises a mounting shaft, a driving gear, a circular mounting base, a first spherical block, a second spherical block, a first swing rod bearing, a guide sleeve, a cylindrical guide block and a second swing rod bearing. According to the double-swing-rod mechanism of the electric pick, the guide sleeve, the cylindrical guide block, the second swing rod, the second rotating shaft, the second swing rod bearing and the second spherical block are matched with one another to achieve the guiding purpose, the first swing rod bearing, the first swing rod and the piston cylinder can move stably, and therefore the working process of the electric pick is stable, and the service life of the electric pick is prolonged. And the crushing performance of the electric pick can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pickaxes, in particular to a double-rocker mechanism of an electric pickaxe. Background Art

[0002] The electric pick is a common handheld electric tool. At present, a Chinese patent with the publication (announcement) number CN203449286U discloses an electric pick, including a quick-release chuck, a positioning block, a hammer, an impact piston, a cylinder housing, a cylinder, a pneumatic piston, a piston pin, a connecting rod, a crankshaft, a handle, a switch, a rear cover, a housing, a motor, an intermediate cover, a large gear, and a crankcase. The crankshaft is arranged in the crankcase, the large gear is fixed on the crankshaft and meshes with the motor output gear shaft, the connecting rod is connected between the crankshaft and the pneumatic piston, the crankcase is provided with an integral auxiliary oil tank, the auxiliary oil tank is connected with the inner cavity of the crankcase, and the top of the crankcase and the auxiliary oil tank are correspondingly provided with a detachable main oil tank cover and an auxiliary oil tank cover.

[0003] Although the above-mentioned electric pick has the advantages of simple and reasonable structure, convenient operation and use, good lubrication effect, long service life, etc., in actual use, the above-mentioned electric pick uses a motor to drive the crankshaft to rotate through a large gear, the crankshaft drives the pneumatic piston to reciprocate through a connecting rod, and the pneumatic piston drives the working tool fixed on the quick-release chuck to work through the impact piston impact hammer. Among them, the crankshaft drives the pneumatic piston to reciprocate through the connecting rod, and the movement process is unstable, which will lead to reduced crushing performance of the electric pick.

[0004] Therefore, a double rocker mechanism of an electric pick is proposed. Utility Model Content

[0005] The utility model aims to solve the problems raised in the background technology and provides a double-rocker mechanism for an electric pick.

[0006] The specific technical solutions are as follows:

[0007] A double swing lever mechanism for an electric pick, comprising:

[0008] A connecting seat installed inside the housing of an electric pick and a double rocker drive assembly installed on the connecting seat, wherein:

[0009] A hammer rod sleeve is rotatably mounted inside one end of the connecting seat, a connecting rod is movably mounted inside the hammer rod sleeve, one end of the connecting rod extends to the outside of the hammer rod sleeve and is rotatably mounted with a piston, the piston is movably mounted inside a piston cylinder, one end of the piston cylinder is slidably mounted inside one end of the hammer rod sleeve, and a fixing seat is fixedly mounted on the other end of the piston cylinder;

[0010] The double rocker drive assembly includes a mounting shaft, a driving gear, a circular mounting seat, a first spherical block, a second spherical block, a first rocker bearing, a guide sleeve, a cylindrical guide block and a second rocker bearing. The mounting shaft is fixedly mounted in the connecting seat, the driving gear is rotatably sleeved on the mounting shaft through a rolling bearing, the circular mounting seat is fixedly mounted on an end face of the driving gear away from the mounting shaft, the first spherical block is fixedly mounted on an end face of the circular mounting seat away from the driving gear, the second spherical block is fixedly mounted on a side of the first spherical block away from the first spherical block, and the first rocker bearing is tilted and sleeved on the first spherical block. The first swing rod is fixedly mounted on the outer ring of the first swing rod bearing, a first rotating shaft is fixedly mounted on the end of the first swing rod away from the first swing rod bearing, the first rotating shaft is rotatably mounted on the fixed seat, the guide sleeve is mounted on the connecting seat by screws, the cylindrical guide block is slidably mounted in the guide sleeve, and a mounting groove is provided at one end of the cylindrical guide block, the second swing rod bearing is tiltedly mounted on the second spherical block, and a second swing rod is fixedly mounted on the outer ring of the second swing rod bearing, a second rotating shaft is fixedly mounted on the end of the second swing rod away from the second swing rod bearing, and the second rotating shaft is rotatably mounted in the mounting groove.

[0011] As a preferred solution of the utility model, a fitting seat is installed on the outer periphery of the circular mounting seat via a rolling bearing, and the fitting seat is fixedly connected to the connecting seat via screws.

[0012] As a preferred solution of the utility model, a transmission rod is fixedly installed on the side of the second spherical block away from the first spherical block, a driving gear is fixedly sleeved on the transmission rod, a driven gear is fixedly sleeved on the hammer rod sleeve, and the driven gear is meshed with the driving gear.

[0013] As a preferred solution of the utility model, a reinforcement seat is fixedly mounted on the connecting seat, and the transmission rod is rotatably connected to the reinforcement seat via a rolling bearing.

[0014] As a preferred solution of the utility model, the hammer rod sleeve is slidably sleeved with a ring and fixedly sleeved with a retaining ring, the retaining ring is arranged close to the driven gear, and a spring is abutted between the retaining ring and the ring, the spring is sleeved on the hammer rod sleeve, and the outer ring surface of the ring is fixedly connected to the inner wall of the electric pick housing.

[0015] As a preferred solution of the utility model, a quick-release chuck is installed at one end of the hammer rod sleeve away from the connecting seat.

[0016] The utility model has the following beneficial effects:

[0017] The double rocker mechanism of the electric pick provided by the utility model can, when in use, utilize the gear on the output shaft of the motor driving the electric pick shell inside to drive the driving gear to rotate, the driving gear drives the circular mounting seat to rotate, the circular mounting seat drives the first spherical block and the second spherical block to rotate, because the first rocker bearing is tiltedly mounted on the first spherical block and the second rocker bearing is tiltedly mounted on the second spherical block, so that the first rocker bearing and the second rocker bearing are driven to swing during the rotation of the first spherical block and the second spherical block, and the first rocker bearing and the second rocker bearing respectively drive the first rocker and the second rocker bearing to swing during the swinging process The rod swings, and the first swing arm drives the piston cylinder to make reciprocating linear motion. During the reciprocating linear motion, the piston cylinder uses the air inside it to drive the piston to make reciprocating linear motion. During the reciprocating linear motion, the piston drives the connecting rod inside the hammer rod sleeve to make reciprocating linear motion, thereby achieving the purpose of hammering the electric pick head. At the same time, the guide sleeve, the cylindrical guide block, the second swing arm, the second rotating shaft, the second swing arm bearing and the second spherical block cooperate with each other for the purpose of guidance, which can make the first swing arm bearing, the first swing arm and the piston cylinder move stably, so that the working process of the electric pick is relatively stable, and the crushing performance of the electric pick is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the double swing rod mechanism of the electric pick provided in the embodiment of the utility model Figure 1 ;

[0019] Figure 2 A schematic diagram of the structure of the double swing rod mechanism of the electric pick provided in the embodiment of the utility model Figure 2 ;

[0020] Figure 3 A schematic diagram of the partial structure of the double swing rod mechanism of the electric pick provided in the embodiment of the utility model Figure 1 ;

[0021] Figure 4 A schematic diagram of the partial structure of the double swing rod mechanism of the electric pick provided in the embodiment of the utility model Figure 2 ;

[0022] Figure 5 A schematic diagram of the partial structure of the double swing rod mechanism of the electric pick provided in the embodiment of the utility model Figure 3 ;

[0023] Figure 6 A schematic partial cross-sectional structure diagram of a double rocker mechanism of an electric pick provided in an embodiment of the utility model.

[0024] In the attached figure:

[0025] 1. Connecting seat; 2. Mounting shaft; 3. Hammer rod sleeve; 4. Quick-release chuck; 5. Ferrule; 6. Spring; 7. Retaining ring; 8. Driven gear; 9. Transmission rod; 10. Driving gear; 11. Reinforcement seat; 12. Second swing rod bearing; 13. First swing rod bearing; 14. Guide sleeve; 15. First spherical block; 16. Second spherical block; 17. Piston cylinder; 18. First swing rod; 19. Fixed seat; 20. Piston; 21. Second swing rod; 22. Second rotating shaft; 23. Cylindrical guide block; 24. Connecting rod; 25. First rotating shaft; 26. Driving gear; 27. Mounting seat; 28. Circular mounting seat; 29. ​​Mounting groove. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0027] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term 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 an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between 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] The double swing lever mechanism of the electric pick provided in this embodiment is as follows: Figure 1-Figure 6As shown, it includes: a connecting base 1 installed inside the electric pick housing and a double rocker drive assembly installed on the connecting base 1.

[0032] Among them, a hammer rod sleeve 3 is rotatably installed inside one end of the connecting seat 1, a connecting rod 24 is movably installed inside the hammer rod sleeve 3, one end of the connecting rod 24 extends to the outside of the hammer rod sleeve 3 and is rotatably installed with a piston 20, the piston 20 is movably installed inside the piston cylinder 17, one end of the piston cylinder 17 is slidably installed inside one end of the hammer rod sleeve 3, and the other end of the piston cylinder 17 is fixedly installed with a fixed seat 19;

[0033] The double rocker drive assembly includes a mounting shaft 2, a driving gear 26, a circular mounting seat 28, a first spherical block 15, a second spherical block 16, a first rocker bearing 13, a guide sleeve 14, a cylindrical guide block 23 and a second rocker bearing 12. The mounting shaft 2 is fixedly mounted in the connecting seat 1. The driving gear 26 is rotatably sleeved on the mounting shaft 2 through a rolling bearing. The circular mounting seat 28 is fixedly mounted on an end face of the driving gear 26 away from the mounting shaft 2. The first spherical block 15 is fixedly mounted on an end face of the circular mounting seat 28 away from the driving gear 26. The second spherical block 16 is fixedly mounted on a side of the first spherical block 15 away from the first spherical block 15. The first rocker bearing 13 is tilted and sleeved on the first spherical seat 28. The first swing rod 18 is fixedly mounted on the block 15, and the first swing rod 18 is fixedly mounted on the outer ring of the first swing rod bearing 13, the first rotating shaft 25 is fixedly mounted on the end of the first swing rod 18 away from the first swing rod bearing 13, and the first rotating shaft 25 is rotatably mounted on the fixed seat 19, the guide sleeve 14 is mounted on the connecting seat 1 by screws, the cylindrical guide block 23 is slidably mounted in the guide sleeve 14, and a mounting groove 29 is opened at one end of the cylindrical guide block 23, the second swing rod bearing 12 is tiltedly mounted on the second spherical block 16, and the second swing rod 21 is fixedly mounted on the outer ring of the second swing rod bearing 12, the second swing rod 21 is fixedly mounted on the end away from the second swing rod bearing 12 with a second rotating shaft 22, and the second rotating shaft 22 is rotatably mounted in the mounting groove 29.

[0034] The double rocker drive assembly set up by the above technical solution is mainly composed of a mounting shaft 2, a driving gear 26, a circular mounting seat 28, a first spherical block 15, a second spherical block 16, a first rocker bearing 13, a guide sleeve 14, a cylindrical guide block 23 and a second rocker bearing 12. When in use, the gear on the motor-driven output shaft inside the electric pick housing can be used to drive the driving gear 26 to rotate, and the driving gear 26 drives the circular mounting seat 28 to rotate, and the circular mounting seat 28 drives the first spherical block 15 and the second spherical block 16 to rotate. Since the first rocker bearing 13 is tiltedly mounted on the first spherical block 15 and the second rocker bearing 12 is tiltedly mounted on the second spherical block 16, the first spherical block 15 and the second spherical block 16 will drive the first rocker bearing 13 and the second rocker bearing 12 to swing during their rotation. The first swing arm bearing 13 and the second swing arm bearing 12 respectively drive the first swing arm 18 and the second swing arm 21 to swing during the swinging process, and the first swing arm 18 drives the piston cylinder 17 to perform reciprocating linear motion. The piston cylinder 17 uses the air inside it to drive the piston 20 to perform reciprocating linear motion during the reciprocating linear motion. The piston 20 drives the connecting rod 24 inside the hammer rod sleeve 3 to perform reciprocating linear motion during the reciprocating linear motion, so as to achieve the purpose of hammering the electric pick head. At the same time, the guide sleeve 14, the cylindrical guide block 23, the second swing arm 21, the second rotating shaft 22, the second swing arm bearing 12 and the second spherical block 16 cooperate with each other for the purpose of guidance, so that the first swing arm bearing 13, the first swing arm 18 and the piston cylinder 17 can move stably, so that the working process of the electric pick is relatively stable, and the crushing performance of the electric pick is guaranteed.

[0035] In order to improve the stability of the circular mounting seat 28 during movement and to improve the stability of the double rocker drive assembly, a mounting seat 27 is installed on the outer periphery of the circular mounting seat 28 via a rolling bearing, and the mounting seat 27 is fixedly connected to the connecting seat 1 via screws.

[0036] In order to allow the pick head of the electric pick to rotate to meet different usage requirements, a transmission rod 9 is fixedly installed on the side of the second spherical block 16 away from the first spherical block 15, and a driving gear 10 is fixedly mounted on the transmission rod 9, and a driven gear 8 is fixedly mounted on the hammer rod sleeve 3. The driven gear 8 and the driving gear 10 are meshed with each other, and the hammer rod sleeve 3 can be driven to rotate at the same time when the driving gear 26 rotates.

[0037] In order to improve the stability of the transmission rod 9 during rotation, a reinforcement seat 11 is fixedly installed on the connecting seat 1, and the transmission rod 9 is rotatably connected to the reinforcement seat 11 via a rolling bearing.

[0038] In order to reduce the huge reaction force generated when the electric pick is working, a ring 5 is slidably mounted on the hammer rod sleeve 3 and a retaining ring 7 is fixedly mounted on the hammer rod sleeve 3. The retaining ring 7 is arranged close to the driven gear 8, and a spring 6 is abutted between the retaining ring 7 and the ring 5. The spring 6 is mounted on the hammer rod sleeve 3, and the outer ring surface of the ring 5 is fixedly connected to the inner wall of the electric pick shell. The ring 5 can rotate relative to the hammer rod sleeve 3, and a circular ring is installed between the ring 5 and the retaining ring 7. The circular ring is mounted on the hammer rod sleeve 3 and the circular ring can rotate relative to the ring 5, which can reduce the resistance of the spring 6 to the rotation of the ring 5. The set spring 6 can offset a part of the huge reaction force generated when the electric pick is working, thereby reducing the reverse impact force on the staff and minimizing the damage to the staff.

[0039] In order to facilitate and quickly install the electric pickaxe head, a quick-release chuck 4 is installed at the end of the hammer rod sleeve 3 away from the connecting seat 1.

[0040] In summary, the double rocker mechanism of the electric pick provided in this embodiment has the following advantages:

[0041] When the double rocker mechanism of the electric pick is used, the gear on the output shaft of the motor driving the electric pick inside the housing drives the driving gear 26 to rotate, the driving gear 26 drives the circular mounting seat 28 to rotate, the circular mounting seat 28 drives the first spherical block 15 and the second spherical block 16 to rotate, because the first rocker bearing 13 is tiltedly mounted on the first spherical block 15 and the second rocker bearing 12 is tiltedly mounted on the second spherical block 16, so that the first spherical block 15 and the second spherical block 16 will drive the first rocker bearing 13 and the second rocker bearing 12 to swing during the rotation, and the first rocker bearing 13 and the second rocker bearing 12 will drive the first rocker 18 and the second rocker 21 to swing during the swinging process. The first swing arm 18 drives the piston cylinder 17 to make reciprocating linear motion. During the reciprocating linear motion, the piston cylinder 17 uses the air inside it to drive the piston 20 to make reciprocating linear motion. During the reciprocating linear motion, the piston 20 drives the connecting rod 24 inside the hammer rod sleeve 3 to make reciprocating linear motion, thereby achieving the purpose of hammering the electric pick head. At the same time, the guide sleeve 14, the cylindrical guide block 23, the second swing arm 21, the second rotating shaft 22, the second swing arm bearing 12 and the second spherical block 16 cooperate with each other for the purpose of guidance, so that the first swing arm bearing 13, the first swing arm 18 and the piston cylinder 17 can move stably, so that the working process of the electric pick is relatively stable, and the crushing performance of the electric pick is guaranteed.

[0042] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A double rocker mechanism for an electric pick, characterized in that: include: A connecting seat (1) installed inside the housing of an electric pick and a double-rocker drive assembly installed on the connecting seat (1), wherein: A hammer rod sleeve (3) is rotatably mounted inside one end of the connecting seat (1), a connecting rod (24) is movably mounted inside the hammer rod sleeve (3), one end of the connecting rod (24) extends to the outside of the hammer rod sleeve (3) and a piston (20) is rotatably mounted thereon, the piston (20) is movably mounted inside a piston cylinder (17), one end of the piston cylinder (17) is slidably mounted inside one end of the hammer rod sleeve (3), and a fixing seat (19) is fixedly mounted on the other end of the piston cylinder (17); The double rocker drive assembly comprises a mounting shaft (2), a driving gear (26), a circular mounting seat (28), a first spherical block (15), a second spherical block (16), a first rocker bearing (13), a guide sleeve (14), a cylindrical guide block (23) and a second rocker bearing (12); the mounting shaft (2) is fixedly mounted in the connecting seat (1); the driving gear (26) is rotatably sleeved on the mounting shaft (2) via a rolling bearing; the circular mounting seat (28) is fixedly mounted on an end face of the driving gear (26) away from the mounting shaft (2); the first spherical block (15) is fixedly mounted on an end face of the circular mounting seat (28) away from the driving gear (26); the second spherical block (16) is fixedly mounted on a side of the first spherical block (15) away from the first spherical block (15); and the first rocker bearing (13) is tiltedly sleeved on the first spherical block (1 5), and a first swing rod (18) is fixedly mounted on the outer ring of the first swing rod bearing (13), a first rotating shaft (25) is fixedly mounted on the end of the first swing rod (18) away from the first swing rod bearing (13), and the first rotating shaft (25) is rotatably mounted on the fixed seat (19), the guide sleeve (14) is mounted on the connecting seat (1) by screws, the cylindrical guide block (23) is slidably mounted in the guide sleeve (14), and a mounting groove (29) is provided at one end of the cylindrical guide block (23), the second swing rod bearing (12) is tiltedly sleeved on the second spherical block (16), and a second swing rod (21) is fixedly mounted on the outer ring of the second swing rod bearing (12), a second rotating shaft (22) is fixedly mounted on the end of the second swing rod (21) away from the second swing rod bearing (12), and the second rotating shaft (22) is rotatably mounted in the mounting groove (29).

2. The double rocker mechanism of the electric pick according to claim 1, characterized in that: The outer periphery of the circular mounting seat (28) is mounted with a fitting seat (27) via a rolling bearing, and the fitting seat (27) is fixedly connected to the connecting seat (1) via screws.

3. The double rocker mechanism of the electric pick according to claim 1, characterized in that: A transmission rod (9) is fixedly mounted on the side of the second spherical block (16) away from the first spherical block (15); a driving gear (10) is fixedly sleeved on the transmission rod (9); a driven gear (8) is fixedly sleeved on the hammer rod sleeve (3); and the driven gear (8) and the driving gear (10) are meshed with each other.

4. The double rocker mechanism of the electric pick according to claim 3, characterized in that: A reinforcement seat (11) is fixedly mounted on the connection seat (1), and the transmission rod (9) is rotationally connected to the reinforcement seat (11) via a rolling bearing.

5. The double rocker mechanism of the electric pick according to claim 3, characterized in that: The hammer rod sleeve (3) is slidably sleeved with a ring (5) and fixedly sleeved with a retaining ring (7), the retaining ring (7) is arranged close to the driven gear (8), and a spring (6) is abutted between the retaining ring (7) and the ring (5), the spring (6) is sleeved on the hammer rod sleeve (3), and the outer ring surface of the ring (5) is fixedly connected to the inner wall of the electric pick shell.

6. The double rocker mechanism of an electric pick according to any one of claims 1 to 5, characterized in that: A quick-release chuck (4) is mounted on one end of the hammer rod sleeve (3) away from the connecting seat (1).

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