Universal coupling protection device and universal coupling

Abstract

The universal coupling protection device comprises an intermediate shaft arranged in the middle and connecting fork heads installed at the two ends of the intermediate shaft through cross shafts, and further comprises a protection assembly, and the protection assembly is arranged in the middle of the intermediate shaft; the protection assembly comprises a bearing bush, a fastening bolt, a guide hole and a shaft hole, the bearing bush is installed in the middle of the middle shaft, a bearing bush seat is arranged at the bottom end of the bearing bush, first connecting blocks are arranged on the two sides of the bottom end of the bearing bush seat, supporting rods are installed on the first connecting blocks through first rotating shafts, and moving blocks are installed at the bottom ends of the supporting rods through second rotating shafts. The universal coupling is novel in structure, ingenious in conception and capable of supporting the intermediate shaft, keeping balance of the intermediate shaft and conducting buffering balance on the height and the inclination angle of the intermediate shaft, and can prevent the intermediate shaft from swinging easily along with rotation of the connecting fork head when a cross shaft of the running universal coupling is broken, so that the service life of the intermediate shaft is prolonged. And finally, the equipment is damaged and even operators are harmed.

Description

Technical Field

[0001] The utility model relates to a universal coupling, in particular to a universal coupling protection device and the universal coupling. Background Art

[0002] The universal coupling uses the characteristics of its mechanism to make the two shafts not on the same axis. When there is an axis angle, the two connected shafts can rotate continuously and reliably transmit torque and motion. The commonly used universal coupling includes an intermediate shaft with intermediate forks at both ends and two connecting forks adapted to the intermediate forks. The intermediate forks and the connecting forks are connected together through a cross shaft. The connecting forks are used to connect with external parts. For example, the two connecting forks are connected to the output shaft of the drive device and the transmission shaft of the actuator respectively. Under heavy load, the universal coupling is prone to cause the cross shaft to break. For example, when the cross shaft at one end connected to the actuator breaks, while the connecting fork at one end of the drive device is still rotating with the output shaft of the drive device, the intermediate shaft will swing with the rotation of the connecting fork. The swinging cross shaft will smash the equipment and even threaten the life safety of the operator. At the same time, when in use, the intermediate shaft will have changes in height and tilt angle. There is no good buffer mechanism now, which is not conducive to use. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a universal coupling protection device and a universal coupling, which effectively solve the problems mentioned in the above technical background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes an intermediate shaft arranged in the middle and connecting forks installed at both ends of the intermediate shaft through a cross shaft, and also includes a protection component, wherein the middle part of the intermediate shaft is provided with a protection component;

[0005] The protective assembly includes a bearing, a bearing seat, a first connecting block, a first rotating shaft, a support rod, a second rotating shaft, a moving block, a mounting seat, a groove, a guide rod, a buffer spring, a fastening bolt, a guide hole and an axis hole. The bearing is installed in the middle of the intermediate shaft, a bearing seat is provided at the bottom end of the bearing, first connecting blocks are provided on both sides of the bottom end of the bearing seat, the first connecting block is installed with a support rod through the first rotating shaft, a moving block is installed at the bottom end of the support rod through the second rotating shaft, the moving block is slidably installed in the mounting seat, a guide rod is fixed in the middle of the inner side of the mounting seat, and a buffer spring is sleeved on the guide rod on the outer side of the moving block.

[0006] Preferably, a groove is provided at the mounting seat at a position corresponding to the moving block.

[0007] Preferably, the moving block is sleeved on the guide rod.

[0008] Preferably, a plurality of fastening bolts are provided at both ends of the mounting seat.

[0009] Preferably, a guide hole is provided at a position of the moving block corresponding to the guide rod.

[0010] Preferably, both the first connecting block and the moving block are provided with axial holes.

[0011] Beneficial effects: The utility model has a novel structure and ingenious conception. It can support the intermediate shaft, maintain the balance of the intermediate shaft, and buffer and balance the height and inclination angle of the intermediate shaft. It can solve the problem that when the cross shaft of the running universal joint breaks, the intermediate shaft can be prevented from swinging with the rotation of the connecting fork, which will eventually cause damage to the equipment or even harm to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the mounting seat of the utility model;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the mobile block of the utility model;

[0016] Numbers in the figure: 1. intermediate shaft; 2. cross shaft; 3. connecting fork; 4. protective assembly; 5. bearing; 6. bearing seat; 7. first connecting block; 8. first rotating shaft; 9. support rod; 10. second rotating shaft; 11. moving block; 12. mounting seat; 13. groove; 14. guide rod; 15. buffer spring; 16. fastening bolt; 17. guide hole; 18. shaft hole. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-3 The specific implementation modes of the present utility model are further described in detail.

[0018] Embodiment 1, by Figure 1-3 The utility model provides a universal coupling protection device and a universal coupling, comprising an intermediate shaft 1 arranged in the middle and connecting fork heads 3 installed at both ends of the intermediate shaft 1 through a cross shaft 2, and also comprising a protection component 4. The middle part of the intermediate shaft 1 is provided with the protection component 4;

[0019] The protective assembly 4 includes a bearing 5, a bearing seat 6, a first connecting block 7, a first rotating shaft 8, a support rod 9, a second rotating shaft 10, a moving block 11, a mounting seat 12, a groove 13, a guide rod 14, a buffer spring 15, a fastening bolt 16, a guide hole 17 and an axis hole 18. The bearing 5 is installed in the middle of the intermediate shaft 1. The bottom end of the bearing 5 is provided with a bearing seat 6. The first connecting block 7 is provided on both sides of the bottom end of the bearing seat 6. The first connecting block 7 is installed with a support rod 9 through the first rotating shaft 8. The bottom end of the support rod 9 is installed with a moving block 11 through the second rotating shaft 10. The moving block 11 is slidably installed in the mounting seat 12. The guide rod 14 is fixed in the middle of the inner side of the mounting seat 12. The buffer spring 15 is sleeved on the guide rod 14 on the outer side of the moving block 11.

[0020] Embodiment 2

[0021] In the first embodiment, the moving block 11 is inconvenient to move. Figure 2 As another preferred embodiment, the difference from the first embodiment is that a groove 13 is provided at the position of the mounting seat 12 corresponding to the moving block 11 to facilitate the movement of the moving block 11.

[0022] Embodiment 3

[0023] In the first embodiment, the moving block 11 is difficult to guide. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the moving block 11 is sleeved on the guide rod 14 to facilitate guiding the moving block 11.

[0024] Embodiment 4

[0025] In the first embodiment, the mounting base 12 is inconvenient to fix. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a plurality of fastening bolts 16 are provided at both ends of the mounting seat 12 to facilitate the fixing and use of the mounting seat 12.

[0026] Embodiment 5

[0027] In the first embodiment, the moving block 11 and the guide rod 14 are not easy to match. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a guide hole 17 is provided at the position of the moving block 11 corresponding to the guide rod 14 to facilitate the coordinated use of the moving block 11 and the guide rod 14.

[0028] Embodiment 6

[0029] In the first embodiment, the first connecting block 7 and the moving block 11 are inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that both the first connecting block 7 and the moving block 11 are provided with an axial hole 18 to facilitate the installation and use of the first connecting block 7 and the moving block 11.

[0030] Working principle: When the utility model is used, the intermediate shaft 1 is installed on the bearing 5. When the intermediate shaft 1 is displaced up and down or tilted at a small angle during transmission, the force will be transmitted to the bearing seat 6, the bearing seat 6 will transmit the force to the support rod 9, the support rod 9 will transmit the force to the moving block 11, the moving block 11 pushes or pulls the buffer spring 15, that is, the moving block 11 moves on the groove 13, so as to maintain the balance of the intermediate shaft 1 and the height of the buffer. The set bearing 5 can solve the problem that when the cross shaft 2 of the running universal joint breaks, the intermediate shaft 1 is easy to swing with the rotation of the connecting fork 3, which eventually causes damage to the equipment or even harm to the operator.

[0031] Beneficial effects: The utility model has a novel structure and an ingenious design. It can support the intermediate shaft 1, maintain the balance of the intermediate shaft 1, and buffer and balance the height and inclination angle of the intermediate shaft 1. It can solve the problem that when the cross shaft 2 of the running universal joint breaks, the intermediate shaft 1 can be prevented from swinging with the rotation of the connecting fork 3, which will eventually cause damage to the equipment or even harm to the operator.

[0032] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A universal joint protection device and a universal joint, comprising an intermediate shaft (1) arranged in the middle and connecting fork heads (3) installed at both ends of the intermediate shaft (1) through a cross shaft (2), characterized in that: It also comprises a protection component (4), wherein the middle part of the intermediate shaft (1) is provided with the protection component (4); The protection assembly (4) comprises a bearing bush (5), a bearing bush seat (6), a first connecting block (7), a first rotating shaft (8), a supporting rod (9), a second rotating shaft (10), a moving block (11), a mounting seat (12), a groove (13), a guide rod (14), a buffer spring (15), a fastening bolt (16), a guide hole (17) and a shaft hole (18). The bearing bush (5) is mounted in the middle of the intermediate shaft (1), and a bearing bush seat (6) is provided at the bottom end of the bearing bush (5). A first connecting block (7) is provided on both sides of the bottom end of the bearing seat (6); a support rod (9) is installed on the first connecting block (7) through a first rotating shaft (8); a moving block (11) is installed on the bottom end of the support rod (9) through a second rotating shaft (10); the moving block (11) is slidably installed in the mounting seat (12); a guide rod (14) is fixed in the middle of the inner side of the mounting seat (12); and a buffer spring (15) is sleeved on the guide rod (14) outside the moving block (11).

2. A universal coupling protection device and a universal coupling as claimed in claim 1, characterized in that: The mounting seat (12) is provided with a groove (13) at a position corresponding to the moving block (11).

3. A universal coupling protection device and a universal coupling as claimed in claim 1, characterized in that: The moving block (11) is sleeved on the guide rod (14).

4. A universal coupling protection device and a universal coupling as claimed in claim 1, characterized in that: A plurality of fastening bolts (16) are provided at both ends of the mounting seat (12).

5. A universal coupling protection device and a universal coupling as claimed in claim 1, characterized in that: The moving block (11) is provided with a guide hole (17) at a position corresponding to the guide rod (14).

6. A universal coupling protection device and a universal coupling as claimed in claim 1, characterized in that: The first connecting block (7) and the moving block (11) are both provided with an axial hole (18).

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