Cross shaft type universal coupling

Abstract

The utility model discloses a cross shaft type universal coupling which comprises a first rotating ring, a first pipe fitting, a second rotating ring and a second pipe fitting. The first pipe fitting and the second pipe fitting are perpendicularly connected in a communicating mode, a first rotating column is rotationally connected into the first pipe fitting, second rotating columns are rotationally connected into the parts, on the two sides of the middle of the first rotating column, of the second pipe fitting correspondingly, and the two ends of the first rotating ring are fixedly connected with the two ends of the first rotating column correspondingly; the two ends of the second rotating ring are fixedly connected with the outer ends of the two second rotating columns correspondingly, a first pipe opening and a second pipe opening are formed in the positions, close to the ends, of the first pipe fitting and the second pipe fitting in a communicating mode correspondingly, and a communicating pipe is arranged between the ends, without the pipe openings, of the two pipe fittings in a communicating mode. The first pipe opening and the second pipe opening are each detachably provided with a pipe plug. By means of the universal joint pin type universal coupling, lubricating oil in the coupling can be quickly updated.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, and particularly relates to a cross-shaft universal coupling. Background Art

[0002] A universal coupling is a common and widely used coupling. With its structural characteristics, this coupling can enable the two connected shafts to rotate continuously and reliably transmit torque and motion when there is an angular difference between the axes.

[0003] When the existing coupling is in use, the relative rotation of components is often lubricated by the internal lubricating oil to reduce wear. However, due to the inevitable mutual contact of components, wear during component rotation will generate debris, and the debris mixed in the lubricating oil will affect the lubrication effect. Therefore, it is necessary to regularly drain the lubricating oil mixed with debris in the coupling. Currently, it is rather troublesome to drain the lubricating oil of the existing coupling. Usually, it is necessary to disassemble the components connected to the end of the cross shaft, which is time-consuming and laborious. Therefore, it is necessary to propose a new type of cross-shaft universal coupling to solve the above problems. Summary of the Utility Model

[0004] Aiming at the defects existing in the background art, the utility model provides a cross-shaft universal coupling that can quickly update the lubricating oil in the coupling.

[0005] The technical solution for the utility model to solve the technical problems is as follows:

[0006] According to one aspect of the present application, a cross-shaft universal coupling is provided, which includes a first rotating ring, a first pipe fitting, a second rotating ring, and a second pipe fitting; the first pipe fitting and the second pipe fitting are vertically and communicatively connected. A first rotating column is rotatably connected inside the first pipe fitting, and second rotating columns are respectively rotatably connected inside the second pipe fittings on both sides of the middle of the first rotating column. Both ends of the first rotating ring are fixedly connected to both ends of the first rotating column respectively, and both ends of the second rotating ring are fixedly connected to the outer ends of the two second rotating columns respectively. A first pipe orifice and a second pipe orifice are respectively communicatively provided near the ends of the first pipe fitting and the second pipe fitting, and a communicating pipe is communicatively provided between the ends of the two pipe fittings without pipe orifices. Pipe plugs are respectively detachably provided on the first pipe orifice and the second pipe orifice.

[0007] As a further improvement of the technical solution, first spiral plates with the same spiral direction are respectively fixedly provided on both sides of the surface of the first rotating column, and a plurality of first plates are evenly and fixedly provided along the circumference in the middle of the surface of the first rotating column, and the first plates are axially aligned with the first rotating column; second spiral plates with the same spiral direction are respectively fixedly provided on the surfaces of the two second rotating columns.

[0008] As a further improvement of the technical solution, multiple said first plates are arranged at intervals in two rows.

[0009] As a further improvement of the technical solution, inclined surfaces are respectively arranged at both ends of the first plate.

[0010] As a further improvement of the technical solution, the first pipe orifice and the second pipe orifice are respectively threadedly connected to their respective pipe plug heads.

[0011] Compared with the prior art, a cross-shaft universal coupling provided by the present utility model has a novel, reasonable and concise structure, and is very convenient to manufacture and use. The first spiral plate and the second spiral plate provided on the first rotating column and the second rotating column drive the lubricating oil to move, so that the lubricating oil can move inside the first pipe fitting and the second pipe fitting. The moving lubricating oil can carry away the iron filings generated by the rotation inside the coupling, so that the lubricating oil can be continuously updated. The lubricating oil is added and discharged through the first pipe orifice and the second pipe orifice to ensure the lubrication effect inside the coupling and extend the service life of the coupling. Description of the Drawings

[0012] Figure 1 is the main structure diagram of the present utility model;

[0013] Figure 2 is the sectional structure diagram of the first pipe fitting and the second pipe fitting of the present utility model;

[0014] Figure 3 is the internal structure diagram of the first pipe fitting and the second pipe fitting of the present utility model.

[0015] Reference numerals in the drawings: 1, first rotating ring; 2, first pipe orifice; 3, second pipe fitting; 4, connecting pipe; 5, second rotating ring; 6, second pipe orifice; 7, first pipe fitting; 8, second rotating column; 9, first rotating column; 10, first spiral plate; 11, first plate; 12, second spiral plate. Detailed Embodiments

[0016] 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. Unless otherwise defined, the technical terms or scientific terms used herein should be the usual meanings understood by people with general skills in the field to which the disclosure belongs. The "upper", "lower", "left", "right", "front", "back", "inside", "outside", "second", "first", etc. used in the patent application specification and claims of this disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. The places not described in detail in the utility model are all known technologies of technicians in this technical field.

[0017] like Figures 1-3 As shown, a cross-axis universal coupling comprises a first rotating circle 1, a first pipe fitting 7, a second rotating circle 5 and a second pipe fitting 3; the first pipe fitting 7 and the second pipe fitting 3 are vertically connected, a first rotating column 9 is rotatably connected inside the first pipe fitting 7, and second rotating columns 8 are rotatably connected inside the second pipe fittings 3 on both sides of the middle of the first rotating column 9, respectively. The two ends of the first rotating circle 1 are respectively fixedly connected to the two ends of the first rotating column 9, and the two ends of the second rotating circle 5 are respectively fixedly connected to the outer ends of the two second rotating columns 8. The first pipe fitting 7 and the second pipe fitting 3 are respectively connected and provided with a first pipe opening 2 and a second pipe opening 6 near the end, which are used for adding and discharging lubricating oil. A connecting pipe 4 is connected and provided between the ends of the two pipe fittings without pipe openings, which is used for moving lubricating oil in the two pipe fittings. The first pipe opening 2 and the second pipe opening 6 are respectively detachably provided with pipe plugs, and the first pipe opening 2 and the second pipe opening 6 are respectively threadedly connected to their respective pipe plugs.

[0018] In this embodiment, first spiral plates 10 with the same spiral direction are fixedly provided on both sides of the surface of the first rotating column 9, and multiple first plates 11 are evenly fixedly provided along the circumference of the middle part of the surface of the first rotating column 9, and the first plate 11 is axially consistent with the first rotating column 9; second spiral plates 12 with the same spiral direction are fixedly provided on the surfaces of the two second rotating columns 8, and the multiple first plates 11 are divided into two rows and spaced apart, and inclined surfaces are provided at both ends of each first plate 11 to facilitate the movement of lubricating oil.

[0019] Working principle: The first rotating ring 1 and the second rotating ring 5 are connected to an external power component. When the first rotating ring 1 rotates, it drives the second pipe fitting 3 and the first pipe fitting 7 to rotate through the first rotating column 9. The second pipe fitting 3 drives the second rotating ring 5 to rotate through the second rotating column 8. Before the workpiece leaves the factory, lubricating oil has been pre-added inside the second pipe fitting 3 and the first pipe fitting 7. When the first rotating ring 1 rotates relative to the first pipe fitting 7, the first rotating column 9 rotates relative to the first pipe fitting 7. Due to the fixed spiral direction of the first spiral plate 10, the first spiral plate 10 on the surface of the first rotating column 9 drives the lubricating oil to move downward. When the lubricating oil moves to the position of the first plate 11, the lubricating oil above squeezes the lubricating oil at the first plate 11, so the lubricating oil moves downward on the surface of the first plate 11 and reaches the bottom of the first rotating column 9. Through the continuous transportation of the first spiral plate 10, the lubricating oil at the bottom of the first pipe fitting 7 enters the inside of the second pipe fitting 3 through the connecting pipe 4. Due to the fixed spiral direction of the second spiral plate 12, when the second rotating column 8 rotates, it drives the lubricating oil to move through the second spiral plate 12 on its surface. The lubricating oil contacts the first plate 11, and the rotating first plate 11 moves the lubricating oil to the second rotating column 8 on the other side. Through the second spiral plate 12, the lubricating oil enters the second pipe orifice 6. The second pipe orifice 6 is opened regularly to discharge the lubricating oil inside the second pipe orifice 6, and at the same time, an equal amount of lubricating oil is replenished into the first pipe orifice 2 for supplementation.

Claims

1. A cross-shaft universal coupling, characterized in that, It includes a first rotating ring (1), a first pipe fitting (7), a second rotating ring (5) and a second pipe fitting (3); the first pipe fitting (7) and the second pipe fitting (3) are vertically and communicatively connected. A first rotating column (9) is rotatably connected inside the first pipe fitting (7). Second rotating columns (8) are respectively rotatably connected inside the second pipe fitting (3) on both sides of the middle of the first rotating column (9). Both ends of the first rotating ring (1) are fixedly connected to both ends of the first rotating column (9). Both ends of the second rotating ring (5) are fixedly connected to the outer ends of the two second rotating columns (8). A first pipe orifice (2) and a second pipe orifice (6) are respectively communicatively arranged near the ends of the first pipe fitting (7) and the second pipe fitting (3). A communicating pipe (4) is communicatively arranged between the ends of the two pipe fittings without pipe orifices. Pipe plugs are detachably arranged on the first pipe orifice (2) and the second pipe orifice (6) respectively.

2. A cross-shaft universal coupling according to claim 1, characterized in that, First spiral plates (10) with the same spiral direction are respectively fixedly arranged on both sides of the surface of the first rotating column (9). A plurality of first plates (11) are fixedly arranged on the middle part of the surface of the first rotating column (9) evenly along the circumference. The first plates (11) are axially aligned with the first rotating column (9); second spiral plates (12) with the same spiral direction are respectively fixedly arranged on the surfaces of the two second rotating columns (8).

3. A cross-shaft universal coupling according to claim 2, characterized in that, The plurality of first plates (11) are divided into two rows and arranged at intervals.

4. A cross-shaft universal coupling according to claim 2 or 3, characterized in that Both ends of the first plate (11) are respectively provided with inclined surfaces.

5. A cross-shaft universal coupling according to claim 1, characterized in that, The first pipe orifice (2) and the second pipe orifice (6) are respectively threadedly connected to their respective pipe plugs.

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