Crank arm structure

Abstract

The utility model discloses a crank arm structure, and relates to the technical field of crank arm structures. The device comprises a workbench, a base, a connecting rod structure, a first connecting rod, a second connecting rod, a lower crank arm and an upper crank arm, the base is arranged at the top end of the workbench, shaft seats are arranged on the two sides of the base respectively, the two sides of the first connecting rod are arranged on the base through the shaft seats respectively, and a driving motor is arranged on one side of the base; a shaft rod I is arranged at the output end of the driving motor, penetrates through one shaft seat and extends to the outer part of the shaft seat; by using a crank arm structure and a connecting rod mechanism, the design can provide a flexible movement range, so that the worktable can be operated in multiple directions, and the adaptability and the flexibility of equipment are improved; the precise matching of the connecting rod structure and the rotating assembly (the workbench is rotationally connected with the base) can improve the positioning precision of the equipment, so that the machining or operation is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of crank arm structures, in particular to a crank arm structure. Background Art

[0002] During the processing of handicrafts, it is necessary to drill holes in the handicrafts. The existing handicraft drilling equipment cannot flexibly adjust the angle during use and cannot perform accurate positioning, which will affect the qualification rate and quality of the handicrafts. Utility Model Content

[0003] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crank arm structure, which includes a workbench, a base, a connecting rod structure, a connecting rod 1, a connecting rod 2, a lower crank arm and an upper crank arm, the base is arranged at the top of the workbench, and shaft seats are respectively provided on both sides of the base, and both sides of the connecting rod 1 are respectively provided on the base through the shaft seats, a driving motor is provided on one side of the base, and an output end of the driving motor is provided with a shaft rod 1, the shaft rod 1 passes through one of the shaft seats and extends to the outside of the shaft seat, the top of the connecting rod 1 is provided with a shaft rod 2, and one of the connecting rods 2 is provided The end is also arranged on the second shaft rod, the lower end of the lower curved arm is rotatably arranged on the base, and a fan-shaped connecting piece is provided between the upper curved arm and the lower curved arm. The position of the central angle of the fan-shaped connecting piece is rotatably set on the second shaft rod, and a mounting block is provided at the end of the upper curved arm away from the fan-shaped connecting piece, and the upper curved arm is rotatably connected to the upper end of the mounting block; the lower end of the mounting block is rotatably connected to the second connecting rod; an extension rod is provided on the second connecting rod, and the extension rod is connected to one end of the connecting rod structure through a rotating shaft, and the other end of the connecting rod structure is rotatably connected to the first shaft rod.

[0004] Preferably, the connecting rod structure includes a long connecting rod and a short connecting rod, the long connecting rod is rotationally connected to the short connecting rod, the short connecting rod is rotationally connected to the shaft rod 1, and the long connecting rod is rotationally connected to the extension rod.

[0005] Preferably, a motor protection cover is provided on the mounting block, a motor is provided inside the motor protection cover, and a drilling head is provided at the output end of the motor.

[0006] Preferably, an inspection port is provided on one side wall of the workbench.

[0007] Preferably, an extension plate is provided at the bottom end of the workbench, and a through hole is provided on the extension plate.

[0008] Preferably, the workbench is rotatably connected to the base, a rotating motor is provided inside the workbench, a rotating shaft is provided at the output end of the rotating motor, and the top end of the rotating shaft is connected to the base.

[0009] Beneficial effects: Compared with the existing technology, the present invention uses a crank arm structure and a connecting rod mechanism. This design can provide a flexible range of motion, so that the workbench can be operated in multiple directions, thereby increasing the adaptability and flexibility of the equipment; the precise coordination of the connecting rod structure and the rotating assembly (rotating connection between the workbench and the base) can improve the positioning accuracy of the equipment, making processing or operation more accurate; the design of the drive motor and the shaft can provide effective power transmission, ensuring the smooth operation and efficient operation of the equipment; an inspection port is provided on one side wall of the workbench to facilitate daily maintenance and troubleshooting of the equipment; the combined design of long and short connecting rods makes the connecting rod structure more flexible, able to adapt to different operating requirements, while enhancing the stability and efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0011] Figure 2 It is a partial structural perspective diagram of the utility model.

[0012] Figure 3 It is a structural schematic diagram of the connecting rod structure of the present invention and the second connecting rod being connected.

[0013] In the accompanying drawings: 1-workbench, 2-base, 3-connecting rod structure, 4-connecting rod 1, 5-connecting rod 2, 6-lower curved arm, 7-upper curved arm, 8-axis rod 1, 9-axis rod 2, 10-fan-shaped connecting piece, 11-mounting block, 12-extension rod, 13-motor protection cover, 14-drilling head, 15-inspection port, 16-extension plate, 17-through hole. DETAILED DESCRIPTION

[0014] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0015] Example

[0016] Please refer to the drawings in the specification. In the embodiment of the present invention, a crank arm structure is provided, which includes a workbench 1, a base 2, a connecting rod structure 3, a connecting rod 1 4, a connecting rod 2 5, a lower crank arm 6 and an upper crank arm 7. The base 2 is arranged at the top of the workbench 1, and shaft seats are respectively provided on both sides of the base 2. Both sides of the connecting rod 1 4 are respectively provided on the base 2 through the shaft seats. A driving motor is provided on one side of the base 2, and a shaft rod 1 8 is provided at the output end of the driving motor. The shaft rod 1 8 passes through one of the shaft seats and extends to the outside of the shaft seat. A shaft rod 2 9 is provided at the top of the connecting rod 1 8, and one end of the connecting rod 2 5 is also provided at the On the shaft rod 2 9, the lower end of the lower curved arm 6 is rotatably set on the base 2, and a fan-shaped connecting piece 10 is provided between the upper curved arm 6 and the lower curved arm 7. The position of the central angle of the fan-shaped connecting piece 10 is rotatably set on the shaft rod 2 9. The end of the upper curved arm 7 away from the fan-shaped connecting piece 10 is provided with a mounting block 11, and the upper curved arm 6 is rotatably connected to the upper end of the mounting block 11; the lower end of the mounting block 11 is rotatably connected to the connecting rod 2 9; an extension rod 12 is provided on the connecting rod 2 9, and the extension rod 12 is connected to one end of the connecting rod structure 3 through a rotating shaft, and the other end of the connecting rod structure 3 is rotatably connected to the shaft rod 1 8.

[0017] Furthermore, the connecting rod structure 3 includes a long connecting rod 301 and a short connecting rod 302, the long connecting rod 301 and the short connecting rod 302 are rotationally connected, the short connecting rod 302 and the shaft rod 8 are rotationally connected, and the long connecting rod 301 and the extension rod 12 are rotationally connected.

[0018] Furthermore, a motor protection cover 13 is provided on the mounting block 11 , a motor is provided inside the motor protection cover 13 , and a drilling head 14 is provided at the output end of the motor.

[0019] Furthermore, a maintenance opening 15 is provided on one side wall of the workbench 1 , and the maintenance opening on the workbench allows maintenance and inspection of the internal operating status of the equipment.

[0020] Furthermore, an extension plate 16 is provided at the bottom end of the workbench 1, and a through hole 17 is provided on the extension plate 16. The extension plate and the through hole are used to facilitate the fixation of the workbench and provide stability of the equipment.

[0021] Furthermore, the workbench 1 is rotatably connected to the base 2, a rotating motor is provided inside the workbench 1, a rotating shaft is provided at the output end of the rotating motor, the top end of the rotating shaft is connected to the base 2, the rotating connection between the workbench and the base and the internal rotating motor enable the workbench to rotate, so that the handicraft can be processed at different angles.

[0022] Working Principle: When the drive motor starts, the shaft at its output end begins to rotate. This rotation is transmitted to Link 1 through the shaft seat, causing Link 1 to also start moving. The movement of Link 1 is transmitted to Link 2 through Shaft 2. Link 2 is connected to Shaft 2 at one end and to the mounting block at the other end. Therefore, the movement of Link 2 causes the mounting block to move accordingly. The mounting block, through its upper end connected to the upper crank arm and its lower end connected to Link 2, causes the fan-shaped connecting piece between the upper and lower crank arms to rotate. The rotation of the fan-shaped connecting piece at its central angle realizes the movement of the upper crank arm, which is then transmitted to the lower crank arm. Due to the rotation of the fan-shaped connecting piece between the upper and lower crank arms, the distal end of the upper crank arm moves, causing the movement of the mounting block to be transmitted to the lower crank arm. The lower end of the lower crank arm is pivotally mounted on the base, so the relative movement of the upper and lower crank arms can accomplish complex tasks. The connecting rod structure (including the long and short connecting rods) allows for a wider range of motion and more precise control through connection with the extension rod. The rotating connection between the long and short connecting rods provides additional motion transmission, ensuring that the connection between the connecting rod structure and the shaft rod can accurately control the movement of the upper and lower crank arms.

[0023] In summary, by using a crank arm structure and a connecting rod mechanism, the design can provide a flexible range of motion, allowing the workbench to operate in multiple directions, thereby increasing the adaptability and flexibility of the equipment; the precise coordination of the connecting rod structure and the rotating assembly (the rotating connection between the workbench and the base) can improve the positioning accuracy of the equipment, making processing or operation more accurate; the design of the drive motor and the shaft can provide effective power transmission, ensuring the smooth operation and efficient operation of the equipment; an inspection port is provided on one side wall of the workbench to facilitate daily maintenance and troubleshooting of the equipment; the combined design of long and short connecting rods makes the connecting rod structure more flexible, able to adapt to different operating requirements, while enhancing the stability and efficiency of the system.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A crank arm structure, characterized in that: The invention comprises a workbench (1), a base (2), a connecting rod structure (3), a connecting rod 1 (4), a connecting rod 2 (5), a lower crank arm (6) and an upper crank arm (7), wherein the base (2) is arranged at the top of the workbench (1), and shaft seats are respectively arranged on both sides of the base (2), and both sides of the connecting rod 1 (4) are respectively arranged on the base (2) through the shaft seats, and a driving motor is arranged on one side of the base (2), and a shaft rod 1 (8) is arranged at the output end of the driving motor, and the shaft rod 1 (8) passes through one of the shaft seats and extends to the outside of the shaft seat, and a shaft rod 2 (9) is arranged at the top of the connecting rod 1 (4), and one end of the connecting rod 2 (5) is also arranged on the shaft rod 2 (9), and the lower crank arm (6) is provided with a plurality of connecting rods. The lower end is rotatably arranged on the base (2), a fan-shaped connecting piece (10) is provided between the upper curved arm (7) and the lower curved arm (6) for connection, the position of the central angle of the fan-shaped connecting piece (10) is rotatably arranged on the shaft rod 2 (9), the end of the upper curved arm (7) away from the fan-shaped connecting piece (10) is provided with a mounting block (11), and the upper end of the upper curved arm (7) is rotatably connected to the upper end of the mounting block (11); the lower end of the mounting block (11) is rotatably connected to the connecting rod 2 (5); an extension rod (12) is provided on the connecting rod 2 (5), the extension rod (12) is connected to one end of the connecting rod structure (3) through a rotating shaft, and the other end of the connecting rod structure (3) is rotatably connected to the shaft rod 1 (8).

2. A crank arm structure according to claim 1, characterized in that: The connecting rod structure (3) comprises a long connecting rod (301) and a short connecting rod (302), wherein the long connecting rod (301) and the short connecting rod (302) are rotationally connected, the short connecting rod (302) and the shaft rod (8) are rotationally connected, and the long connecting rod (301) and the extension rod (12) are rotationally connected.

3. The crank arm structure according to claim 1, characterized in that: A motor protection cover (13) is provided on the mounting block (11), a motor is provided inside the motor protection cover (13), and a drilling head (14) is provided at the output end of the motor.

4. The crank arm structure according to claim 1, characterized in that: An inspection opening (15) is provided on one side wall of the workbench (1).

5. The crank arm structure according to claim 1, characterized in that: An extension plate (16) is provided at the bottom end of the workbench (1), and a through hole (17) is provided on the extension plate (16).

6. The crank arm structure according to claim 1, characterized in that: The workbench (1) is rotatably connected to the base (2). A rotating motor is provided inside the workbench (1). A rotating shaft is provided at the output end of the rotating motor. The top end of the rotating shaft is connected to the base (2).

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