Rotating shaft protection structure

Abstract

The utility model discloses a rotating shaft protection structure which comprises a vehicle body, a gear motor used for outputting a rotating shaft is installed in the middle of the vehicle body in a bolting mode, and the output end of the gear motor is in key connection with a set of hexagonal shafts. Two sets of limiting plates are movably installed on the two sides of the vehicle body respectively, each set of limiting plates is locked to the side edge of the vehicle body through U-shaped bolts, protection bearing sleeves are installed at the outer ends of the limiting plates in a bolted mode, and the two ends of the hexagonal shaft are inserted into the protection bearing sleeves on the corresponding sides respectively. The limiting plates can be flexibly mounted on the two sides of a vehicle body through the U-shaped bolts, the limiting plates can correspond to the mounting position of the hexagonal shaft through elastic matching of the U-shaped bolts and nuts, the outer end of the hexagonal shaft can be stably inserted into the protective bearing sleeve to protect the hexagonal shaft, the situation that the hexagonal shaft is bent when stress is too large is avoided, and the service life of the hexagonal shaft is prolonged. The device maintenance frequency is reduced, and the device use safety is improved.

Description

Technical Field

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

[0002] When the transplanter is working, the reduction motor needs to drive the shaft to rotate to make the chain box work and complete the planting of the seedlings. However, when the shaft is subjected to a large rotational force during the planting process, it may bend.

[0003] The Chinese utility model patent with publication number CN101793305B discloses a stable structure of a rotating shaft, including a rotating shaft that is inserted into a fixed housing and extends outside the fixed housing, and the stable structure also includes an elastic damping member that is sleeved on the rotating shaft and can control the shaking of the rotating shaft, and a pressing member that can press the elastic damping member onto the fixed housing, and the pressing member is fixedly connected to the fixed housing. The stable structure of the rotating shaft provided has a simple structure, is easy to assemble, can ensure the stable rotation of the rotating shaft, and has low maintenance and use costs.

[0004] In the above-mentioned public documents, the vibration of the rotating shaft is reduced by adding an elastic damping structure, but no structure for limiting the rotating shaft is provided at the end of the rotating shaft, so that the rotating shaft may still bend when subjected to a large force. Therefore, a rotating shaft protection structure is now needed. Utility Model Content

[0005] The utility model aims to provide a rotating shaft protection structure, which performs limiting protection on the hexagonal shaft by means of a protection bearing sleeve installed on the outer side of a limiting plate, so as to solve the technical problems mentioned in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotating shaft protection structure, comprising a vehicle body, a reduction motor for outputting the rotating shaft is bolted and installed in the middle of the vehicle body, and a group of hexagonal shafts are keyed to the output end of the reduction motor;

[0007] Two groups of limit plates are movably installed on both sides of the vehicle body, each group of limit plates is locked to the side of the vehicle body by U-bolts, and protective bearing sleeves are bolted to the outer ends of the limit plates, and the two ends of the hexagonal shaft are respectively inserted into the corresponding side protective bearing sleeves.

[0008] Preferably, two groups of limiting sleeves are symmetrically installed on both sides of the vehicle body, and a group of front supporting legs is movably installed inside each group of limiting sleeves.

[0009] Preferably, a protection frame is bolted and installed in the middle of the vehicle body, a mounting plate is bolted and installed in the middle of the vehicle body inside the protection frame, and the reduction motor is bolted and installed on the upper part of the mounting plate.

[0010] Preferably, a nut is threadedly mounted on the outer end of the U-shaped bolt, and the nut is rotated to press against the surface of the limiting plate.

[0011] Preferably, a through hole is formed through the center of the upper portion of the limiting plate, and threaded holes are formed through the two sides of the limiting plate.

[0012] Preferably, the protective bearing sleeve is installed at a position corresponding to the through hole, and the protective bearing sleeve is fixed to the surface of the limit plate through two sets of positioning bolts, and the ends of the positioning bolts are threadedly installed inside the threaded holes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The U-bolts are used to ensure that the limit plates can be flexibly installed on both sides of the vehicle body, and the U-bolts and nuts are loosely matched to make the limit plates correspond to the installation position of the hexagonal shaft, so that the outer end of the hexagonal shaft can be stably inserted into the protective bearing sleeve to protect it, avoiding the hexagonal shaft from bending when the force is too large, reducing the number of maintenance times of the device and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an enlarged schematic diagram of the structure at A of the utility model;

[0017] Figure 3 It is an enlarged schematic diagram of the structure at B of the utility model.

[0018] In the figure: 1. vehicle body; 2. front support leg; 3. protection frame; 4. mounting plate; 5. reduction motor; 6. hexagonal shaft; 7. chain box; 8. U-bolt; 9. limit plate; 10. through hole; 11. threaded hole; 12. protection bearing sleeve; 13. nut; 14. positioning bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides: a rotating shaft protection structure, such as Figure 1-Figure 3As shown, it includes a vehicle body 1, a reduction motor 5 for outputting a rotating shaft is bolted and installed in the middle of the vehicle body 1, a set of hexagonal shafts 6 are keyed to the output end of the reduction motor 5, and two sets of chain boxes 7 are symmetrically installed on both sides of the hexagonal shafts 6;

[0021] Two sets of limit plates 9 are movably installed on both sides of the vehicle body 1, and each set of limit plates 9 is locked to the side of the vehicle body 1 by U-bolts 8, and a protective bearing sleeve 12 is bolted to the outer end of the limit plate 9, and the two ends of the hexagonal shaft 6 are respectively inserted into the corresponding side protective bearing sleeve 12.

[0022] Preferably, two groups of limiting sleeves are symmetrically installed on both sides of the vehicle body 1, and a group of front legs 2 are movably installed inside each group of limiting sleeves. The limiting sleeves installed on both sides of the vehicle body 1 limit the front legs 2. The front legs 2 can adjust the use height to limit the overall use height of the vehicle body 1, thereby improving the stability of the chain box 7 and enabling the chain box 7 to drive the wheel to plant the seedlings in the soil more efficiently.

[0023] Furthermore, a protective frame 3 is bolted and installed in the middle of the vehicle body 1, and a mounting plate 4 is bolted and installed inside the protective frame 3 in the middle of the vehicle body 1. The reduction motor 5 is bolted and installed on the upper part of the mounting plate 4. The protective frame 3 installed in the middle of the vehicle body 1 protects the reduction motor 5 and can also ensure that the vehicle body 1 can be connected to the transplanter, making the device more convenient to use. The mounting plate 4 installed in the middle of the vehicle body 1 limits the reduction motor 5, so that the reduction motor 5 can work stably to control the rotation of the hexagonal shaft 6.

[0024] Furthermore, a nut 13 is threadedly installed on the outer end of the U-bolt 8, and the nut 13 is rotated to press against the surface of the limit plate 9. The limit plate 9 is more stably installed on the side of the vehicle body 1 through the cooperation of the U-bolt 8 and the nut 13. Moreover, since the limit plate 9 is installed by locking the U-bolt 8 and the nut 13, the limit plate 9 can be moved by rotating the nut 13 to disengage from the U-bolt 8, so that the limit plate 9 can be more flexibly and quickly docked with the use position of the hexagonal shaft 6, ensuring that the end of the hexagonal shaft 6 can be stably inserted into the protective bearing sleeve 12, to limit the end of the protective bearing sleeve 12, share the strong force on the protective bearing sleeve 12, and improve the safety of the use of the protective bearing sleeve 12.

[0025] Preferably, a through hole 10 is opened through the center of the upper part of the limit plate 9, and threaded holes 11 are opened through the through hole 10 on both sides of the limit plate 9. The through hole 10 in the center of the limit plate 9 allows the hexagonal shaft 6 to extend and insert into the protective bearing sleeve 12 to complete the connection, and the threaded holes 11 opened on both sides of the limit plate 9 can cooperate with the positioning bolts 14 to limit the protective bearing sleeve 12, thereby ensuring the stable use of the protective bearing sleeve 12, and further limiting the end of the hexagonal shaft 6 to ensure the safe use of the hexagonal shaft 6.

[0026] It is worth mentioning that the protective bearing sleeve 12 is installed at the position corresponding to the through hole 10, and the protective bearing sleeve 12 is fixed on the surface of the limit plate 9 through two sets of positioning bolts 14, and the ends of the positioning bolts 14 are threadedly installed inside the threaded hole 11. After the hexagonal shaft 6 is inserted into the protective bearing sleeve 12, when it is subjected to a strong rotational force, the force will be output to the protective bearing sleeve 12, and the pressure on the hexagonal shaft 6 will be reduced by the coordinated rotation of the protective bearing sleeve 12.

[0027] 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 rotating shaft protection structure, characterized in that: It comprises a vehicle body (1), wherein a reduction motor (5) for outputting a rotating shaft is bolted to the middle of the vehicle body (1), and a set of hexagonal shafts (6) are key-connected to the output end of the reduction motor (5); Two groups of limit plates (9) are movably mounted on both sides of the vehicle body (1), each group of the limit plates (9) is locked to the side of the vehicle body (1) by means of U-shaped bolts (8), and a protective bearing sleeve (12) is bolted to the outer end of the limit plate (9), and the two ends of the hexagonal shaft (6) are respectively inserted into the interior of the corresponding side protective bearing sleeve (12).

2. A rotating shaft protection structure according to claim 1, characterized in that: Two groups of limiting sleeves are symmetrically mounted on both sides of the vehicle body (1), and a group of front supporting legs (2) is movably mounted inside each group of limiting sleeves.

3. A rotating shaft protection structure according to claim 2, characterized in that: A protection frame (3) is bolted and installed in the middle of the vehicle body (1); a mounting plate (4) is bolted and installed in the middle of the vehicle body (1) inside the protection frame (3); and the reduction motor (5) is bolted and installed on the upper part of the mounting plate (4).

4. A rotating shaft protection structure according to claim 3, characterized in that: A nut (13) is threadedly mounted on the outer end of the U-shaped bolt (8), and the nut (13) is rotated to press against the surface of the limiting plate (9).

5. A rotating shaft protection structure according to claim 4, characterized in that: A through hole (10) is formed through the center of the upper portion of the limiting plate (9), and threaded holes (11) are formed through the limiting plate (9) on both sides of the through hole (10).

6. A rotating shaft protection structure according to claim 5, characterized in that: The protective bearing sleeve (12) is installed at a position corresponding to the through hole (10), and the protective bearing sleeve (12) is fixed to the surface of the limit plate (9) via two sets of positioning bolts (14), and the ends of the positioning bolts (14) are threadedly installed inside the threaded hole (11).

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