Transmission shaft connecting flange plate structure

Abstract

The utility model discloses a transmission shaft connecting flange plate structure which comprises a first transmission shaft, and the bottom end of the first transmission shaft is rotationally connected with a first butt joint flange. According to the butt joint device, a hook base on a second butt joint flange is inserted into the two receding grooves, then the second butt joint flange is rotated, the hook base enters the butt joint groove, butt joint of the first butt joint flange and the second butt joint flange is completed, further, a limiting block in a square through hole is pushed by rotating an adjusting bolt to enter the limiting groove, and therefore butt joint of the first butt joint flange and the second butt joint flange is completed. The first butt joint flange and the second butt joint flange are limited and finally fixed through the butt joint bolts, so that the connection strength of the first butt joint flange and the second butt joint flange is high, and through cooperation of the limiting blocks and the limiting grooves, the stress condition of the butt joint bolts is greatly reduced; and the condition of fracture of the butt flange is reduced to the greatest extent. And the structural strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and particularly relates to a connecting flange structure of a transmission shaft. Background Technique

[0002] The main function of the connecting flange of the transmission shaft is to realize the connection between the transmission shaft and other components (such as a speed reducer, a motor, etc.), and transmit torque and power. Through the connection of the flange, it can ensure that the transmission shaft rotates stably during operation, and at the same time bear the forces and torques from other components.

[0003] At present, most connecting flanges are fixedly connected by butt bolts. When the connecting flange is subjected to the forces and torques from other components, the main stress positions are on the butt bolts. Under the action of long-term forces, the butt bolts are prone to breakage or thread slipping, which reduces the service life of the connecting flange, and this phenomenon is likely to pose a safety hazard to the driving of the vehicle. Content of the Utility Model

[0004] The purpose of the utility model is to provide a connecting flange structure of a transmission shaft to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A connecting flange structure of a transmission shaft, including a first transmission shaft, a first butt flange is rotatably connected to the bottom end of the first transmission shaft. Two avoidance grooves are opened inside the first butt flange, a butt groove is opened on the inner surface of the first butt flange, the inside of the avoidance groove is communicated with the inside of the butt groove, a second butt flange is arranged at the bottom end of the first butt flange, two hook seats are fixedly connected to the butt end of the second butt flange, the outer surfaces of the two hook seats are respectively inserted into the inside of the two avoidance grooves, and the outer surfaces of the two hook seats are slidably clamped with the inside of the butt groove.

[0006] As a further preference of this technical solution, two square through holes are penetrated and opened at the butt end of the second butt flange, two limit blocks are slidably connected inside the two square through holes, two adjusting frames are fixedly connected to the outer surface of the second butt flange at the positions of the square through holes, two adjusting bolts are threadedly connected inside the two adjusting frames, the bottom ends of the two adjusting bolts respectively abut against the outer surfaces of the limit blocks, and two limit grooves are opened at the butt end of the first butt flange, and the outer surfaces of the two limit blocks are respectively inserted into the inside of the two limit grooves.

[0007] As a further preference of this technical solution, a return spring is fixedly connected to the inner surface of each of the two adjusting frames, and the other ends of the two return springs are respectively fixedly connected to the outer surfaces of the two limit blocks.

[0008] As a further optimization of this technical solution, a first rotating seat is fixedly connected to the bottom end of the second docking flange. A cross shaft is rotatably connected inside the first rotating seat. The other two ends of the cross shaft are rotatably connected to a second rotating seat. A second transmission shaft is fixedly connected to the bottom end of the second rotating seat.

[0009] As a further optimization of this technical solution, two docking through holes are respectively formed through the top ends of the first docking flange and the second docking flange. Two docking bolts are respectively inserted into the four docking through holes. Fixing nuts are threadedly connected to the outer surfaces of the two docking bolts.

[0010] The utility model provides a structure of a transmission shaft connecting flange, which has the following beneficial effects:

[0011] In the utility model, the hook seat on the second docking flange is inserted into the two avoidance grooves, and then the second docking flange is rotated to make the hook seat enter the docking groove, completing the docking of the first docking flange and the second docking flange. Further, by rotating the adjusting bolt, the limiting block in the square through hole is pushed into the limiting groove to limit the first docking flange and the second docking flange. Finally, the first docking flange and the second docking flange are fixed by the docking bolts, so that the connection strength between the first docking flange and the second docking flange is relatively high. And through the cooperation of the limiting block and the limiting groove, the stress condition of the docking bolts is greatly reduced, and the situation of the fracture of the docking flange is minimized to the greatest extent, improving the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 is an exploded schematic diagram of the structures of the first docking flange and the second docking flange of the utility model;

[0014] Figure 3 is a schematic diagram of the internal structure of the first docking flange of the utility model;

[0015] Figure 4 is an exploded schematic diagram of the structure of the second docking flange of the utility model.

[0016] In the figure: 1, first transmission shaft; 2, first docking flange; 3, avoidance groove; 4, docking groove; 5, second docking flange; 6, hook seat; 7, docking through hole; 8, docking bolt; 9, fixing nut; 10, square through hole; 11, limiting block; 12, adjusting frame; 13, adjusting bolt; 14, return spring; 15, first rotating seat; 16, cross shaft; 17, second rotating seat; 18, second transmission shaft; 19, limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0018] The present utility model provides a technical solution: As Figures 1-3 shown, in this embodiment, a drive shaft connection flange structure includes a first drive shaft 1. The bottom end of the first drive shaft 1 is rotatably connected to a first docking flange 2. Two avoidance grooves 3 are formed inside the first docking flange 2. A docking groove 4 is formed on the inner surface of the first docking flange 2. The inside of the avoidance groove 3 is communicated with the inside of the docking groove 4. A second docking flange 5 is arranged at the bottom end of the first docking flange 2. Two hook seats 6 are fixedly connected to the docking end of the second docking flange 5. The outer surfaces of the two hook seats 6 are respectively inserted into the inside of the two avoidance grooves 3. The outer surfaces of the two hook seats 6 are slidably clamped with the inside of the docking groove 4. Among them, by providing the avoidance groove 3, the hook seat 6 can enter the inside of the docking groove 4. By providing the docking groove 4, the first docking flange 2 and the second docking flange 5 can be connected together.

[0019] As Figure 2 and Figure 4 shown, two square through holes 10 are formed through the docking end of the second docking flange 5. Two limit blocks 11 are slidably connected inside the two square through holes 10. Two adjusting frames 12 are fixedly connected to the outer surface of the second docking flange 5 at the positions of the square through holes 10. Two adjusting bolts 13 are threadedly connected inside the two adjusting frames 12. The bottom ends of the two adjusting bolts 13 respectively abut against the outer surfaces of the limit blocks 11. Two limit grooves 19 are formed at the docking end of the first docking flange 2. The outer surfaces of the two limit blocks 11 are respectively inserted into the inside of the two limit grooves 19. By providing the limit blocks 11 and the limit grooves 19, the first docking flange 2 and the second docking flange 5 can be limited, reducing the torsional force received by the docking bolts 8. By providing the adjusting bolts 13, the limit blocks 11 can be pushed to move and be fixed, improving the connection strength.

[0020] As Figure 4 shown, two reset springs 14 are fixedly connected to the inner surfaces of the two adjusting frames 12. The other ends of the two reset springs 14 are respectively fixedly connected to the outer surfaces of the two limit blocks 11, which can reset the limit blocks 11 and facilitate disassembly.

[0021] As Figure 4 shown, a first rotating seat 15 is fixedly connected to the bottom end of the second docking flange 5. A cross shaft 16 is rotatably connected inside the first rotating seat 15. The other two ends of the cross shaft 16 are rotatably connected to a second rotating seat 17. The second rotating seat 17 is fixedly connected to the bottom end of a second drive shaft 18, which can make the second drive shaft 18 deflect at multiple angles and improve flexibility.

[0022] As Figure 2As shown, two docking through holes 7 are respectively formed through the tops of the first docking flange 2 and the second docking flange 5. Two docking bolts 8 are respectively inserted into the four docking through holes 7. Fixing nuts 9 are threadedly connected to the outer surfaces of the two docking bolts 8 for fixing the first docking flange 2 and the second docking flange 5.

[0023] The utility model provides a drive shaft connecting flange structure, and the specific working principle is as follows:

[0024] When docking and installing the first docking flange 2 and the second docking flange 5, the staff inserts the hook seat 6 on the second docking flange 5 into the two avoidance grooves 3, and then rotates the second docking flange 5 to make the hook seat 6 enter the docking groove 4 to complete the docking of the first docking flange 2 and the second docking flange 5. After that, the two adjusting bolts 13 are rotated in sequence to push the limiting blocks 11 in the square through holes 10 into the limiting grooves 19 to limit the first docking flange 2 and the second docking flange 5. Finally, the first docking flange 2 and the second docking flange 5 are fixed by the docking bolts 8 and the fixing nuts 9 to complete the installation.

[0025] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A connecting flange structure for a transmission shaft, comprising a first transmission shaft (1), characterized in that: The bottom end of the first drive shaft (1) is rotatably connected to a first docking flange (2). Two relief grooves (3) are provided inside the first docking flange (2). A docking groove (4) is provided on the inner surface of the first docking flange (2). The inside of the relief groove (3) is communicated with the inside of the docking groove (4). A second docking flange (5) is provided at the bottom end of the first docking flange (2). Two hook seats (6) are fixedly connected to the docking end of the second docking flange (5). The outer surfaces of the two hook seats (6) are respectively inserted into the inside of the two relief grooves (3). The outer surfaces of the two hook seats (6) are slidably clamped with the inside of the docking groove (4).

2. The structure of a drive shaft connecting flange according to claim 1, characterized in that: Two square through holes (10) are provided through the docking end of the second docking flange (5). A limiting block (11) is slidably connected to the inside of each of the two square through holes (10). Two adjusting frames (12) are fixedly connected to the outer surface of the second docking flange (5) at the positions of the square through holes (10). An adjusting bolt (13) is threadedly connected to the inside of each of the two adjusting frames (12). The bottom ends of the two adjusting bolts (13) respectively abut against the outer surface of the limiting block (11). Two limiting grooves (19) are provided at the docking end of the first docking flange (2). The outer surfaces of the two limiting blocks (11) are respectively inserted into the inside of the two limiting grooves (19).

3. The structure of a drive shaft connecting flange according to claim 2, characterized in that: A return spring (14) is fixedly connected to the inner surface of each of the two adjusting frames (12). The other ends of the two return springs (14) are respectively fixedly connected to the outer surface of the two limiting blocks (11).

4. A drive shaft connecting flange structure according to claim 3, characterized in that: A first rotating seat (15) is fixedly connected to the bottom end of the second docking flange (5). A cross shaft (16) is rotatably connected to the inside of the first rotating seat (15). The other two ends of the cross shaft (16) are rotatably connected to a second rotating seat (17). A second drive shaft (18) is fixedly connected to the bottom end of the second rotating seat (17).

5. A drive shaft connecting flange structure according to claim 4, characterized in that: Two docking through holes (7) are respectively provided through the top ends of the first docking flange (2) and the second docking flange (5). Two docking bolts (8) are respectively inserted into the inside of the four docking through holes (7). Fixing nuts (9) are threadedly connected to the outer surfaces of the two docking bolts (8).

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