Dust-free coating equipment for surfaces of automobile parts

Abstract

The invention relates to the technical field of part machining, in particular to automobile part surface dust-free coating equipment which comprises a box body and a transverse plate, the box body is connected with a coating machine, the transverse plate is provided with a first fixing plate, a rotating shaft is connected with a first gear, the first gear is connected with a second gear, the second gear is connected with a second connecting rod, and the first connecting shaft is connected with a first motor; the bidirectional threaded rod is connected with a driving block, the connecting block is connected with a threaded cylinder, the threaded cylinder is connected with a threaded rod, and the threaded rod is connected with a clamping plate; when the part is turned over, a first motor is started to drive a first connecting shaft to rotate, the first connecting shaft drives a first connecting rod to enable a second connecting shaft to move, the second connecting shaft drives a second connecting rod to enable a second gear to rotate around a first gear and drives a first gear to rotate, the first gear drives a rotating shaft to enable a movable block to rotate, and then the part on a clamping plate is driven to rotate. And meanwhile, spraying is conducted, continuous paint spraying on different surfaces of the parts is achieved, manual overturning is avoided, and the paint spraying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, in particular to dust-free coating equipment for the surface of automobile parts. Background Art

[0002] Parts are the components The processing units of the whole and the products serving the processing of auto parts. Traditional auto parts can be roughly divided into seven categories, namely , , , , driving system, body accessories and electronic appliances. The surface processing of parts is sprayed to protect the parts from oxidation corrosion. The corrosion phenomenon around us refers to the damage of various materials under the influence of the environment (the combined effect of chemical, electrochemical and several physical factors), the performance degradation or the deterioration of the state. Spraying paint on the surface of parts is a very important means of maintaining the corrosion protection of parts. A good spray paint protective layer remains continuous, intact and well combined, which can become a barrier to inhibit the invasion of corrosive media.

[0003] In the prior art, the paint spraying device used in the processing of parts on the market can only spray one surface of the part when spraying the part, and cannot continuously spray paint on different surfaces of the part. The parts need to be manually turned over, resulting in low painting efficiency. To this end, the present invention proposes a dust-free coating device for the surface of automobile parts to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a dust-free coating device for the surface of automobile parts to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dust-free coating device for the surface of automobile parts, comprising: a box body and a horizontal plate, the box body is connected to a coating machine, a fixing plate 1 is provided on the horizontal plate, the fixing plate 1 is connected to a rotating shaft, one end of the rotating shaft is connected to a gear 1, the gear 1 is connected to a gear 2, the gear 2 is connected to a connecting rod 2, the connecting rod 2 is provided with a connecting shaft 2, the connecting shaft 2 is connected to a connecting rod 1, the connecting rod 1 is connected to a connecting shaft 1, and the connecting shaft 1 is connected to a motor 1;

[0006] The other end of the rotating shaft is connected to a movable block, the movable block is connected to motor 2 and a bidirectional threaded rod, the bidirectional threaded rod is connected to a driving block, the driving block is connected to a connecting block, the connecting block is connected to a guide plate and a threaded cylinder, the threaded cylinder is connected to a threaded rod, the threaded rod is connected to a clamping plate, the clamping plate is connected to a guide rod, and the guide rod is connected to a guide groove 1.

[0007] Preferably, a coating machine is fixedly connected to the center of the top surface of the box, and the lower end of the coating machine passes through the top plate of the box and is inside the box.

[0008] Preferably, the four walls of the horizontal plate are fixedly connected to the inner wall of the box body, the cross-section of the horizontal plate is in the shape of a U-shaped character, the top surface of the horizontal plate is fixedly connected to a fixed plate one, two fixed plates one are provided, and the fixed plates one are respectively located at the left and right ends of the horizontal plate, the center of the bottom surface of the fixed plate one and the center of the top surface of the horizontal plate are on the same horizontal line, and the fixed plate one is perpendicular to the horizontal plate.

[0009] Preferably, the center of the fixed plate one is respectively passed through by the rotating shaft, and the rotating shaft and the fixed plate one are rotatably connected, one end of the rotating shaft is fixedly connected with a movable block, the movable block is between the fixed plate one, the side plate of the movable block and the two ends of the bidirectional threaded rod are rotatably connected, and one end of the bidirectional threaded rod is fixedly connected to the output end of the motor two, the bidirectional threaded rod is perpendicular to the rotating shaft, and the motor two is fixedly connected to the outer wall of the movable block.

[0010] Preferably, driving blocks are threadedly connected to the outer walls at both ends of the bidirectional threaded rod, the driving block is inside the movable block, connecting blocks are fixedly connected to the two side walls of the driving block, the connecting blocks are respectively between the bidirectional threaded rod and the side plates of the movable block, a guide groove 2 is opened in the center of one side of the connecting block, the guide groove 2 is on the side away from the bidirectional threaded rod, the inner walls of the guide groove 2 are respectively slidably connected to the outer walls of the guide plates, the two ends of the guide plates are fixedly connected to the inner walls of the side plates of the movable block, the guide plates are respectively on both sides of the bidirectional threaded rod, and the guide plates are parallel to the bidirectional threaded rod.

[0011] Preferably, a threaded barrel is rotatably connected inside the connecting block, the threaded barrel is perpendicular to the fixed plate one, one end of the threaded barrel is fixedly connected to the output end of the motor three, and the inner wall of the threaded barrel is threadedly connected to the outer wall of the threaded rod at the end of the motor three close to the fixed plate one.

[0012] Preferably, one end of the threaded rod is fixedly connected to a clamping plate, the clamping plate is on the side away from motor three, the clamping plate is perpendicular to the bidirectional threaded rod, one side of the clamping plate is fixedly connected to a guide rod, the guide rod is on the side close to the connecting block, the outer wall of the guide rod and the inner wall of the guide groove one are slidably connected, the guide groove one is opened on the side wall of the connecting block, the guide groove one is between the guide plate and the threaded cylinder, and the guide groove one is parallel to the threaded rod.

[0013] Preferably, two gears are provided, gears 1 are respectively fixedly connected to one end of the rotating shaft, and gear 1 is at the end away from the movable block, the outer wall of gear 1 is respectively meshed and connected with the outer wall of gear 2, one side of gear 2 is fixedly connected with connecting rod 2, and connecting rod 2 is at the side away from fixed plate 1, and the center of connecting rod 2 and the center of gear 2 are on the same horizontal line, and connecting shaft 2 is fixedly connected to the side walls at both ends of connecting rod 2.

[0014] Preferably, the connecting shaft 2 is on the side away from the gear 2, and the outer wall of the connecting shaft 2 is respectively rotatably connected to one end of the connecting rod 1, and the other end of the connecting rod 1 is fixedly connected to the connecting shaft 1, and the center of the connecting shaft 1 and the center of the gear 1 are on the same horizontal plane. The connecting shaft 1 is rotatably connected in the fixed plate 2. The fixed plate 2 is provided with two pieces, and the fixed plate 2 is respectively on both sides of the connecting rod 1, and the bottom surface of the fixed plate 2 is fixedly connected to the top surface of the horizontal plate. Four motors 1 are fixedly connected to the fixed plate 2, and the motor 1 is in the box. The output ends of the motor 1 are respectively fixedly connected to one end of the connecting shaft 1.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention starts motor 1 to drive connecting shaft 1 to rotate, connecting shaft 1 drives connecting rod 1 to make connecting shaft 2 movable, connecting shaft 2 drives connecting rod 2 to make gear 2 rotate around gear 1 and drive gear 1 to rotate, gear 1 drives the rotating shaft to rotate the movable block, and then drives the parts on the clamping plate to rotate, and spraying is performed at the same time, thereby achieving continuous painting of different surfaces of parts, avoiding manual flipping, and improving painting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the left front top view of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the front side of the present invention;

[0019] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0020] Figure 4 For the present invention Figure 2 A schematic diagram of the structure of the middle B region;

[0021] Figure 5 It is a schematic diagram of the internal structure of the movable block of the present invention;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle C region.

[0023] In the figure: 1. Box body; 2. Coating machine; 3. Horizontal plate; 4. Fixed plate 1; 5. Fixed plate 2; 6. Movable block; 7. Motor 1; 8. Connecting shaft 1; 9. Connecting rod 1; 10. Gear 1; 11. Rotating shaft; 12. Gear 2; 13. Connecting rod 2; 14. Connecting shaft 2; 15. Motor 2; 16. Bidirectional threaded rod; 17. Guide plate; 18. Driving block; 19. Connecting block; 20. Clamping plate; 21. Guide rod; 22. Guide groove 1; 23. Guide groove 2; 24. Threaded rod; 25. Threaded barrel; 26. Motor 3. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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.

[0027] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0028] See also Figures 1 to 6, the present invention provides a technical solution: a dust-free coating device for the surface of automotive parts, including: a box body 1 and a cross plate 3. The box body 1 is connected with a coating machine 2. The center of the top surface of the box body 1 is fixedly connected with the coating machine 2, and the lower end of the coating machine 2 penetrates through the top plate of the box body 1. Inside the box body 1, a fixing plate one 4 is provided on the cross plate 3. The four walls of the cross plate 3 are fixedly connected to the inner wall of the box body 1. The cross section of the cross plate 3 is in a shape of a Chinese character 'hui'. Part of the sprayed material will enter the lower part of the box body 1 through the cross plate 3 for collection, and the bottom plate of the box body 1 is provided with a discharge port (not marked in the figure) for discharging. The top surface of the cross plate 3 is fixedly connected with the fixing plate one 4. There are two fixing plates one 4, which are respectively at the left and right ends of the cross plate 3. The center of the bottom surface of the fixing plate one 4 and the center of the top surface of the cross plate 3 are on the same horizontal line. The fixing plate one 4 is perpendicular to the cross plate 3. The fixing plate one 4 is connected with a rotating shaft 11. One end of the rotating shaft 11 is connected with a gear one 10. The gear one 10 is connected with a gear two 12. The gear two 12 is connected with a connecting rod two 13. There are two gears one 10, which are respectively fixedly connected to one end of the rotating shaft 11, and the gear one 10 is at the end far from the movable block 6. The outer walls of the gear one 10 are respectively meshed with the outer walls of the gear two 12. One side of the gear two 12 is fixedly connected with the connecting rod two 13, and the connecting rod two 13 is on the side far from the fixing plate one 4, and the center of the connecting rod two 13 and the center of the gear two 12 are on the same horizontal line. When the connecting rod two 13 moves, it will drive the gear two 12 to rotate around the gear one 10 and make the gear one 10 rotate, while the gear two 12 itself will not rotate. Fixedly connected to the side walls at both ends of the connecting rod two 13 are connecting shafts two 14. The connecting rod two 13 is provided with the connecting shafts two 14. The connecting shaft two 14 is connected with a connecting rod one 9. The connecting rod one 9 rotates on the connecting shaft two 14 and drives the connecting shaft two 14 to rotate. The connecting rod one 9 is connected with a connecting shaft one 8. The connecting shaft one 8 is connected with a motor one 7. The connecting shaft two 14 is on the side far from the gear two 12. The outer walls of the connecting shaft two 14 are respectively rotationally connected with one end of the connecting rod one 9. The other ends of the connecting rod one 9 are fixedly connected with the connecting shafts one 8. The center of the connecting shaft one 8 and the center of the gear one 10 are on the same horizontal plane. The connecting shaft one 8 is rotationally connected inside the fixing plate two 5. There are two fixing plates two 5, which are respectively on both sides of the connecting rod one 9, and the bottom surface of the fixing plate two 5 is fixedly connected to the top surface of the cross plate 3. Four motors one 7 are fixedly connected to the fixing plate two 5. The motors one 7 are inside the box body 1, and the output ends of the motors one 7 are respectively fixedly connected to one end of the connecting shaft one 8;

[0029] The other end of the rotating shaft 11 is connected to the movable block 6, and the movable block 6 is connected to the motor 2 15 and the bidirectional threaded rod 16. The centers of the fixed plates 14 are respectively passed through by the rotating shaft 11, and the rotating shaft 11 and the fixed plates 14 are rotatably connected. One end of the rotating shaft 11 is fixedly connected to the movable block 6, and the movable block 6 is between the fixed plates 14. The side plates of the movable block 6 are rotatably connected to the two ends of the bidirectional threaded rod 16, and one end of the bidirectional threaded rod 16 is fixedly connected to the output end of the motor 2 15. The bidirectional threaded rod 16 is perpendicular to the rotating shaft 11, and the motor 2 15 is fixedly connected to the outer wall of the movable block 6. The bidirectional threaded rod 16 is connected to the driving block 18, and the driving block 18 is connected to the connecting block 19, and the connecting block 19 is connected to the guide plate 17 and the threaded cylinder 2 5. The outer walls of both ends of the bidirectional threaded rod 16 are threadedly connected with driving blocks 18. The driving blocks 18 can move away from or towards each other under the action of the rotation of the bidirectional threaded rod 16. The driving blocks 18 are in the movable block 6. The two side walls of the driving blocks 18 are fixedly connected with connecting blocks 19. The connecting blocks 19 are respectively between the bidirectional threaded rod 16 and the side plates of the movable block 6. A guide groove 23 is opened at the center of one side of the connecting block 19. The guide groove 23 is on the side away from the bidirectional threaded rod 16. The inner walls of the guide groove 23 are respectively slidably connected with the outer walls of the guide plate 17. The guide groove 23 and the guide plate 17 can ensure the stable movement of the driving block 18. The two ends of the guide plate 17 are fixedly connected to the inner walls of the side plates of the movable block 6. The guide plates 17 are respectively on both sides of the bidirectional threaded rod 16, and the guide plates 17 are parallel to the bidirectional threaded rod 16. The threaded cylinder 25 is connected to the threaded rod 24. The threaded cylinder 25 is rotatably connected in the connecting block 19. The threaded cylinder 25 can make the threaded rod 24 extend when rotating, thereby driving the clamping plate 20 to extend to clamp parts of different sizes. The threaded cylinder 25 is perpendicular to the fixed plate 4. One end of the threaded cylinder 25 is fixedly connected to the output end of the motor three 26. The motor three 26 is at one end close to the fixed plate 4. The inner wall of the threaded cylinder 25 is threadedly connected to the outer wall of the threaded rod 24. The threaded rod 24 is connected to the clamping plate 20. The clamping plate 20 is connected to the guide rod 21. The guide rod 21 is connected to the guide groove 22. The threaded rod 24 A clamping plate 20 is fixedly connected to one end, and the clamping plate 20 is on the side away from the motor three 26. The clamping plate 20 is perpendicular to the bidirectional threaded rod 16. The clamping plate 20 can clamp and support the parts. A guide rod 21 is fixedly connected to one side of the clamping plate 20, and the guide rod 21 is on the side close to the connecting block 19. The outer wall of the guide rod 21 and the inner wall of the guide groove 22 are slidably connected. The guide groove 22 is opened on the side wall of the connecting block 19, and the guide groove 22 is between the guide plate 17 and the threaded cylinder 25. The guide groove 22 is parallel to the threaded rod 24. The guide groove 22 and the guide rod 21 ensure the stable movement of the clamping plate 20, and the activity between the guide groove 22 and the guide rod 21 will not affect the sliding of the guide groove 23 on the guide plate 17.

[0030] When the device is working, when flipping parts, start motor 17 to drive connecting shaft 18 to rotate, connecting shaft 18 drives connecting rod 19 to make connecting shaft 2 14 move, connecting shaft 2 14 drives connecting rod 2 13 to make gear 2 12 rotate around gear 10, and drives gear 10 to rotate, gear 10 drives rotating shaft 11 to make movable block 6 rotate, and then drives parts on clamping plate 20 to rotate, and spraying is carried out at the same time.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust-free coating equipment for automobile parts surface, comprising: A box body (1) and a horizontal plate (3), the box body (1) is connected with a painting machine (2), and the characteristics are as follows: a fixing plate one (4) is arranged on the horizontal plate (3), the fixing plate one (4) is connected with a rotating shaft (11), one end of the rotating shaft (11) is connected with a gear one (10), the gear one (10) is connected with a gear two (12), the gear two (12) is connected with a connecting rod two (13), a connecting shaft two (14) is arranged on the connecting rod two (13), the connecting shaft two (14) is connected with a connecting rod one (9), the connecting rod one (9) is connected with a connecting shaft one (8), and the connecting shaft one (8) is connected with a motor one (7); The other end of the rotating shaft (11) is connected with a movable block (6), the movable block (6) is connected with a motor two (15) and a bidirectional threaded rod (16), the bidirectional threaded rod (16) is connected with a driving block (18), the driving block (18) is connected with a connecting block (19), the connecting block (19) is connected with a guide plate (17) and a threaded cylinder (25), the threaded cylinder (25) is connected with a threaded rod (24), the threaded rod (24) is connected with a clamping plate (20), the clamping plate (20) is connected with a guide rod (21), and the guide rod (21) is connected with a guide groove one (22).

2. The dust-free coating equipment for automobile parts surface according to claim 1 is characterized in that: The center of the top surface of the box body (1) is fixedly connected with a painting machine (2), and the lower end of the painting machine (2) penetrates through the top plate of the box body (1) and is inside the box body (1).

3. The dust-free coating equipment for automobile parts according to claim 1 is characterized in that: The four walls of the horizontal plate (3) are fixedly connected to the inner wall of the box body (1), the cross section of the horizontal plate (3) is in a shape of a Chinese character 'hui', the top surface of the horizontal plate (3) is fixedly connected with the fixing plate one (4), there are two fixing plates one (4), the fixing plates one (4) are respectively at the left and right ends of the horizontal plate (3), the center of the bottom surface of the fixing plate one (4) and the center of the top surface of the horizontal plate (3) are on the same horizontal line, and the fixing plate one (4) is perpendicular to the horizontal plate (3).

4. The dust-free coating equipment for automobile parts surface according to claim 1 is characterized in that: The centers of the fixing plates one (4) are respectively penetrated by the rotating shaft (11), and the rotating shaft (11) is rotatably connected with the fixing plates one (4). One end of the rotating shaft (11) is fixedly connected with a movable block (6), the movable blocks (6) are between the fixing plates one (4), the side plates of the movable blocks (6) are rotatably connected with the two ends of the bidirectional threaded rod (16), and one end of the bidirectional threaded rod (16) is fixedly connected with the output end of the motor two (15). The bidirectional threaded rod (16) is perpendicular to the rotating shaft (11), and the motor two (15) is fixedly connected to the outer wall of the movable block (6).

5. The dust-free coating equipment for automobile parts surface according to claim 1 is characterized in that: The outer walls of both ends of the bidirectional threaded rod (16) are threadedly connected to driving blocks (18), the driving blocks (18) are inside the movable block (6), and the two side walls of the driving block (18) are fixedly connected to connecting blocks (19), the connecting blocks (19) are respectively between the bidirectional threaded rod (16) and the side plates of the movable block (6), and a second guide groove (23) is opened at the center of one side of the connecting block (19), the second guide groove (23) is on the side away from the bidirectional threaded rod (16), the inner wall of the second guide groove (23) is respectively slidably connected to the outer wall of the guide plate (17), the two ends of the guide plate (17) are fixedly connected to the inner wall of the side plate of the movable block (6), the guide plates (17) are respectively on both sides of the bidirectional threaded rod (16), and the guide plates (17) are parallel to the bidirectional threaded rod (16).

6. The dust-free coating equipment for automobile parts according to claim 1, characterized in that: A threaded barrel (25) is rotatably connected inside the connection block (19). The threaded barrel (25) is perpendicular to the fixed plate one (4). One end of the threaded barrel (25) is fixedly connected to the output end of the motor three (26). The motor three (26) is at an end close to the fixed plate one (4). The inner wall of the threaded barrel (25) is threadedly connected to the outer wall of the threaded rod (24).

7. The dust-free coating equipment for automobile parts surface according to claim 1 is characterized in that: One end of the threaded rod (24) is fixedly connected to a clamping plate (20), the clamping plate (20) is on a side away from the motor three (26), the clamping plate (20) is perpendicular to the bidirectional threaded rod (16), one side of the clamping plate (20) is fixedly connected to a guide rod (21), the guide rod (21) is on a side close to the connecting block (19), the outer wall of the guide rod (21) and the inner wall of the guide groove one (22) are slidably connected, the guide groove one (22) is provided on the side wall of the connecting block (19), the guide groove one (22) is between the guide plate (17) and the threaded cylinder (25), and the guide groove one (22) is parallel to the threaded rod (24).

8. The dust-free coating equipment for automobile parts surface according to claim 1 is characterized in that: The gear one (10) is provided with two gears, each of which is fixedly connected to one end of the rotating shaft (11), and the gear one (10) is at the end away from the movable block (6). The outer wall of the gear one (10) is meshed with the outer wall of the gear two (12). One side of the gear two (12) is fixedly connected to a connecting rod two (13), and the connecting rod two (13) is at the side away from the fixed plate one (4). The center of the connecting rod two (13) and the center of the gear two (12) are on the same horizontal line. The side walls at both ends of the connecting rod two (13) are fixedly connected to connecting shafts two (14).

9. The dust-free coating equipment for automobile parts surface according to claim 1, characterized in that: The connecting shaft 2 (14) is on a side away from the gear 2 (12), and the outer wall of the connecting shaft 2 (14) is rotatably connected to one end of the connecting rod 1 (9). The other end of the connecting rod 1 (9) is fixedly connected to the connecting shaft 1 (8). The center of the connecting shaft 1 (8) and the center of the gear 1 (10) are on the same horizontal plane. The connecting shaft 1 (8) is rotatably connected in the fixed plate 2 (5). The fixed plate 2 (5) is provided with two pieces. The fixed plates 2 (5) are respectively on both sides of the connecting rod 1 (9), and the bottom surface of the fixed plate 2 (5) is fixedly connected to the top surface of the horizontal plate (3). Four motors 1 (7) are fixedly connected to the fixed plate 2 (5). The motors 1 (7) are in the box body (1), and the output ends of the motors 1 (7) are respectively fixedly connected to one end of the connecting shaft 1 (8).

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