Electric vehicle frame polishing mechanism

Abstract

The utility model relates to an electric vehicle frame polishing mechanism which comprises a main frame, an auxiliary frame and a polishing assembly, the auxiliary frame is arranged on one side of the main frame, the polishing assembly comprises a motor, a driving wheel, a driven wheel, a belt, a first rotating shaft, a first belt wheel, a second belt wheel, a third belt wheel and a polishing belt, and the main frame is further provided with a tensioning assembly. The tensioning assembly comprises an air cylinder, a sliding rail, a sliding block, a second rotating shaft and a fourth belt wheel, while the motor drives the driving wheel to drive the driven wheel to rotate, the first belt wheel can drive the second belt wheel and the third belt wheel to rotate synchronously, the grinding belt rotates along with the first belt wheel to achieve grinding and polishing operation on the vehicle frame, and rigid connection between the vehicle frame and the grinding machine is avoided in the mode; and the damage to the frame and the mechanical arm is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of frame processing, in particular to a grinding mechanism for an electric vehicle frame. Background Art

[0002] Frame grinding is an important process in the manufacture and repair of automobiles. Its purpose is to remove unevenness, oxidation, dirt, etc. on the frame surface, so that it has a smooth, bright appearance and good surface quality.

[0003] Most of the existing frame grinding devices rely on connecting a grinding machine to the end of a robotic arm, and then fixing the frame on a machine tool fixture. The robotic arm drives the grinding machine to move, so that the grinding machine is close to the frame to realize polishing and grinding of the frame. However, this method is a rigid contact, and it is difficult to control the magnitude of the contact force between the grinding machine and the frame, and sometimes it will cause damage or harm to the frame and the robotic arm. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a grinding mechanism for an electric vehicle frame.

[0005] A grinding mechanism for an electric vehicle frame provided by the utility model adopts the following technical scheme:

[0006] A grinding mechanism for an electric vehicle frame includes a main frame, a sub-frame and a grinding assembly. The sub-frame is arranged on one side of the main frame. The grinding assembly includes a motor, a driving wheel, a driven wheel, a belt, a first rotating shaft, a first belt pulley, a second belt pulley, a third belt pulley and a grinding belt. The motor is fixed on the main frame. The output end of the motor passes through the main frame and is connected to the driving wheel. The driving wheel and the driven wheel are connected by the belt. The first rotating shaft is rotatably connected to the main frame. One end of the first rotating shaft is connected to the driven wheel, and the other end of the first rotating shaft is connected to the first belt pulley. The second belt pulley and the third belt pulley are arranged on the sub-frame at intervals. The grinding belt is tensioned between the first belt pulley, the second belt pulley and the third belt pulley.

[0007] Optionally, a shock absorption assembly is further arranged on the main frame. The shock absorption assembly includes a fixing plate, a telescopic rod and a spring. One end of the telescopic rod is connected to the fixing plate, and the other end of the telescopic rod is connected to the main frame. The spring is sleeved outside the telescopic rod, and one end of the spring abuts against the fixing plate and the other end abuts against the main frame.

[0008] Optionally, a tensioning assembly is further provided on the main frame. The tensioning assembly includes a cylinder, a slide rail, a slider, a second rotating shaft, and a fourth pulley. The cylinder is fixed on the main frame. The piston rod of the cylinder is connected to the slider. The slider is slidably matched with the slide rail. The second rotating shaft is rotatably connected to the slider. The fourth pulley is arranged on the second rotating shaft. The fourth pulley abuts against the grinding belt.

[0009] Optionally, the fourth pulley is arranged between the first pulley and the second pulley.

[0010] Optionally, the sub-frame is in an I shape. The sub-frame includes a first frame arm and a second frame arm. The second pulley is arranged on the first frame arm. The third pulley is arranged on the second frame arm.

[0011] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0012] 1. While the motor drives the driving wheel to drive the driven wheel to rotate, the first pulley will drive the second pulley and the third pulley to rotate synchronously, and the grinding belt rotates accordingly to realize the grinding and polishing operation of the vehicle frame. This method avoids the rigid connection between the vehicle frame and the grinding machine and effectively improves the damage or injury to the vehicle frame and the robotic arm.

[0013] 2. When the vehicle frame moves to the grinding belt and presses against it under the action of the robotic arm, the main frame will move slightly under the action of the shock absorption assembly, further protecting the vehicle frame and the grinding assembly from damage. Description of the Drawings

[0014] Figure 1 is a front view of a grinding mechanism for an electric vehicle frame.

[0015] Figure 2 is a rear view of a grinding mechanism for an electric vehicle frame.

[0016] Description of the reference numerals: 1, main frame; 2, sub-frame; 3, motor; 4, driving wheel; 5, driven wheel; 6, belt; 7, first rotating shaft; 8, first pulley; 9, second pulley; 10, third pulley; 11, grinding belt; 12, fixing plate; 13, telescopic rod; 14, spring; 15, cylinder; 16, slide rail; 17, slider; 18, second rotating shaft; 19, fourth pulley. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0019] In addition, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] The embodiments of the present utility model disclose a grinding mechanism for an electric vehicle frame. Refer to Figure 1-2, An electric vehicle frame grinding mechanism includes a main frame 1, a sub-frame 2 and a grinding assembly. The sub-frame 2 is arranged on one side of the main frame 1. The grinding assembly includes a motor 3, a driving wheel 4, a driven wheel 5, a belt 6, a first rotating shaft 7, a first pulley 8, a second pulley 9, a third pulley 10 and a grinding belt 11. The motor 3 is fixed on the main frame 1. The output end of the motor 3 passes through the main frame 1 and is connected to the driving wheel 4. The driving wheel 4 and the driven wheel 5 are connected by the belt 6. The first rotating shaft 7 is rotatably connected to the main frame 1. One end of the first rotating shaft 7 is connected to the driven wheel 5, and the other end of the first rotating shaft 7 is connected to the first pulley 8. The second pulley 9 and the third pulley 10 are arranged on the sub-frame 2 at intervals. The grinding belt 11 is tensioned between the first pulley 8, the second pulley 9 and the third pulley 10. A tensioning assembly is also arranged on the main frame 1. The tensioning assembly includes a cylinder 15, a slide rail 16, a slider 17, a second rotating shaft 18 and a fourth pulley 19. The cylinder 15 is fixed on the main frame 1. The piston rod of the cylinder 15 is connected to the slider 17. The slider 17 is slidably matched with the slide rail 16. The second rotating shaft 18 is rotatably connected to the slider 17. The fourth pulley 19 is arranged on the second rotating shaft 18. The fourth pulley 19 abuts against the grinding belt 11. Through this design, by changing the scheme of connecting the robotic arm to the grinding machine, it only needs to connect the robotic arm to the vehicle frame and make the vehicle frame abut against the grinding belt 11. While the motor 3 drives the driving wheel 4 to drive the driven wheel 5 to rotate, the first pulley 8 will drive the second pulley 9 and the third pulley 10 to rotate synchronously, and the grinding belt 11 rotates accordingly to realize the grinding and polishing operation of the vehicle frame. This method avoids the rigid connection between the vehicle frame and the grinding machine and effectively improves the damage or injury to the vehicle frame and the robotic arm. The cylinder pushes the slider to move, driving the second rotating shaft and the fourth pulley to move in the vertical direction, which can effectively change the tension of the grinding belt.

[0021] A shock-absorbing assembly is also arranged on the main frame 1. The shock-absorbing assembly includes a fixing plate 12, a telescopic rod 13 and a spring 14. One end of the telescopic rod 13 is connected to the fixing plate 12, and the other end of the telescopic rod 13 is connected to the main frame 1. The spring 14 is sleeved outside the telescopic rod 13, and one end of the spring 14 abuts against the fixing plate 12 and the other end abuts against the main frame 1. When the vehicle frame moves to the grinding belt 11 and is close to it under the action of the robotic arm, the main frame 1 will move slightly under the action of the shock-absorbing assembly, further protecting the vehicle frame and the grinding assembly from damage.

[0022] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electric vehicle frame grinding mechanism, characterized in that: It includes a main frame (1), a sub-frame (2) and a grinding assembly. The sub-frame (2) is arranged on one side of the main frame (1). The grinding assembly includes a motor (3), a driving wheel (4), a driven wheel (5), a belt (6), a first rotating shaft (7), a first pulley (8), a second pulley (9), a third pulley (10) and a grinding belt (11). The motor (3) is fixed on the main frame (1). The output end of the motor (3) passes through the main frame (1) and is connected to the driving wheel (4). The driving wheel (4) and the driven wheel (5) are connected by the belt (6). The first rotating shaft (7) is rotatably connected to the main frame (1). One end of the first rotating shaft (7) is connected to the driven wheel (5), and the other end of the first rotating shaft (7) is connected to the first pulley (8). The second pulley (9) and the third pulley (10) are arranged on the sub-frame (2) at intervals. The grinding belt (11) is tensioned between the first pulley (8), the second pulley (9) and the third pulley (10).

2. The grinding mechanism for an electric vehicle frame according to claim 1, wherein: A shock-absorbing assembly is further arranged on the main frame (1). The shock-absorbing assembly includes a fixing plate (12), a telescopic rod (13) and a spring (14). One end of the telescopic rod (13) is connected to the fixing plate (12), and the other end of the telescopic rod (13) is connected to the main frame (1). The spring (14) is sleeved outside the telescopic rod (13), and one end of the spring (14) abuts against the fixing plate (12), and the other end abuts against the main frame (1).

3. The grinding mechanism for an electric vehicle frame according to claim 1, wherein: A tensioning assembly is further arranged on the main frame (1). The tensioning assembly includes a cylinder (15), a slide rail (16), a slider (17), a second rotating shaft (18) and a fourth pulley (19). The cylinder (15) is fixed on the main frame (1). The piston rod of the cylinder (15) is connected to the slider (17). The slider (17) is slidably matched with the slide rail (16). The second rotating shaft (18) is rotatably connected to the slider (17). The fourth pulley (19) is arranged on the second rotating shaft (18). The fourth pulley (19) abuts against the grinding belt (11).

4. The grinding mechanism for an electric vehicle frame according to claim 3, wherein: The fourth pulley (19) is arranged between the first pulley (8) and the second pulley (9).

5. The grinding mechanism for an electric vehicle frame according to claim 1, characterized in that: The sub-frame (2) is arranged in an I shape. The sub-frame (2) includes a first frame arm and a second frame arm. The second pulley (9) is arranged on the first frame arm, and the third pulley (10) is arranged on the second frame arm.

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