Cross-shaped universal coupling capable of resisting lateral torsion

Abstract

The utility model relates to the technical field of cross-shaped universal couplings, in particular to a lateral torsion resisting cross-shaped universal coupling which comprises a first transmission shaft, a second transmission shaft is placed on the right side of the first transmission shaft, and the side face of the first transmission shaft and the side face of the second transmission shaft are both fixedly connected with extending firm plates with grooves. A cross shaft frame is rotatably connected to the interior of the extending firm plate through a bearing, a coupling middle pipe and an abutting ball rod are rotatably connected to the surface of the cross shaft frame, the coupling middle pipe is located between the first transmission shaft and the second transmission shaft, and a locking assembly is connected to one end of the coupling middle pipe; according to the structure, the abutting ball rod and the coupling middle pipe are arranged to form a coupling rod, the coupling rod can be used for connecting and positioning cross shaft frames at different positions, then stable steering operation of different force application points of a transmission shaft is completed, the lateral torsion resistance strength of the cross universal coupling under the adjustable performance is enhanced, and the service life of the cross universal coupling is prolonged. And the damage rate of the cross-shaped universal coupling is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a cross universal coupling for resisting lateral torque, belonging to the technical field of cross universal couplings. Background Art

[0002] The main advantage of the cross universal coupling is that it can transmit rotational motion and torque between non-coaxial axes, has a large angular deflection capacity and good transmission performance. The biggest feature of the cross universal coupling is that it has a large angular compensation capacity, a compact structure and high transmission efficiency.

[0003] For example, a new type of HC six-roller mill main drive cross-shaft universal coupling with patent application number CN202020520984.7 relates to the technical field of universal couplings. The utility model includes a flange fork, a welded fork and a cross shaft, the cross shaft is inserted into the shaft holes of the flange fork and the welded fork, the flange fork, the welded fork and the cross shaft form a half coupling, the half coupling A and the half coupling B are fixedly connected by a connecting pipe, and the model sizes of the half coupling A and the half coupling B are different;

[0004] Since the above-mentioned cross-axis universal coupling rotates the corresponding half-coupling through the cross axis, its rotation force point is fixed, which makes it inconvenient to adapt to different shaft rotation forces. In addition, the commonly used force points and force intensities are different and it is also inconvenient to make subsequent adjustments, which has certain adverse effects on actual use and therefore needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a cross universal coupling that resists lateral torque. The utility model sets an abutment ball rod and a coupling middle tube to form a coupling rod, which can be used for connecting and positioning cross shaft frames at different positions, thereby completing smooth steering operations at different force application points of the transmission shaft to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cross universal coupling for resisting lateral torsion comprises a transmission shaft 1, a transmission shaft 2 is placed on the right side of the transmission shaft 1, the side surfaces of the transmission shaft 1 and the transmission shaft 2 are fixedly connected to an extended fixing plate with a groove, the interior of the extended fixing plate is rotatably connected to a cross axis frame via a bearing, the surface of the cross axis frame is rotatably connected to a coupling middle tube and an abutment ball rod, the coupling middle tube is located between the transmission shaft 1 and the transmission shaft 2, one end of the coupling middle tube is connected to a locking assembly, and the surface of the abutment ball rod is connected to the surface of the locking assembly.

[0008] Furthermore, the extended fixing plate on the transmission shaft one and the extended fixing plate on the transmission shaft two are divided into long extended fixing plates and short extended fixing plates. The number of the long extended fixing plates and the short extended fixing plates on the transmission shaft one and the transmission shaft two are both two, and the two long extended fixing plates and the two short extended fixing plates are symmetrically distributed on the transmission shaft one and the transmission shaft two with the axis of symmetry of the transmission shaft one and the transmission shaft two.

[0009] Furthermore, the long extension fixing plate and the short extension fixing plate on the transmission shaft one and the long extension fixing plate and the short extension fixing plate on the transmission shaft two are staggered with each other, and adjacent long extension fixing plates and short extension fixing plates do not contact each other.

[0010] Furthermore, the cross-axis frame is a central through rod, and two shaft rods are penetrated inside the central through rod, and the middle parts of the two shaft rods are mutually penetrated.

[0011] Furthermore, one end of the shaft rod on the cross-axis frame is provided with an external threaded surface, and a cover plate is threadedly connected to the surface of the external threaded surface, and the cover plate is located in a groove on the extended fixing plate.

[0012] Furthermore, the locking assembly includes a locking screw and an anti-slip groove, the locking screw is fixedly connected to the side of the abutting club, the anti-slip groove is opened on one end of the coupling middle tube, and the inner wall of the anti-slip groove is threadedly connected to the surface of the locking screw.

[0013] Furthermore, the abutting ball rod is located at the center position between the transmission shaft one and the transmission shaft two, and the surface of the abutting ball rod is in smooth abutment with the extended fixing plates on the transmission shaft one and the transmission shaft two.

[0014] The beneficial effects of the utility model are:

[0015] The present invention provides a novel method for adjusting the force application point between the transmission shaft one and the transmission shaft two by setting different force application points and force application strengths on the transmission shaft one and the transmission shaft two, that is, the locking screw and the anti-skid screw groove can be used to connect the abutment ball rod and the cross-axis frame to extend the connection of the coupling rod at the entire center to form a whole, and the center through rods in the cross-axis frame are connected to each other in a cross shape and connected at the inner center of the center through rod, and the cover plate is connected to the external threaded surface to abut and constrain the cross-axis frame at the extended firm plate in the transmission shaft one and the transmission shaft two, so as to complete the connection and binding of the coupling middle tube and the abutment ball rod, so as to facilitate the transmission steering between the transmission shaft one and the transmission shaft two, and the cross-axis frame at different positions can be unlocked and positioned on the coupling middle tube and the abutment ball rod, thereby enhancing the lateral torsion resistance under the adjustable performance of the cross universal coupling and greatly reducing the damage rate of the cross universal coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of a cross universal coupling for resisting lateral torque of the utility model;

[0018] Figure 2 It is a front cross-sectional view of a cross universal coupling for resisting lateral torque of the utility model;

[0019] Figure 3 It is a side view of a cross shaft frame in a cross universal coupling for resisting lateral torque of the utility model;

[0020] Figure 4 It is a front cross-sectional view of a ball bar abutting in a cross universal coupling for resisting lateral torque of the utility model;

[0021] Numbers in the figure: 1. Transmission shaft one; 2. Transmission shaft two; 3. Extension fixing plate; 4. Cross-axis frame; 5. Coupling middle tube; 6. Abutment ball rod; 7. Long extension fixing plate; 8. Short extension fixing plate; 9. Center through rod; 10. Shaft rod; 11. External threaded surface; 12. Covering plate; 13. Locking screw; 14. Anti-slip screw groove. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A cross universal coupling for resisting lateral torsion comprises a transmission shaft 1, a transmission shaft 2 is placed on the right side of the transmission shaft 1, the side surfaces of the transmission shaft 1 and the transmission shaft 2 are fixedly connected to an extended fixing plate 3 with a groove, the interior of the extended fixing plate 3 is rotatably connected to a cross axis frame 4 through a bearing, the surface of the cross axis frame 4 is rotatably connected to a coupling middle tube 5 and an abutment ball rod 6, the coupling middle tube 5 is located between the transmission shaft 1 and the transmission shaft 2, one end of the coupling middle tube 5 is connected to a locking assembly, and the surface of the abutment ball rod 6 is connected to the surface of the locking assembly.

[0025] Specifically, Figure 1-Figure 4As shown, the cross-axis frame 4 is a center through rod 9, and two shafts 10 are penetrated inside the center through rod 9, and the middle parts of the two shafts 10 are mutually penetrated, and the connection of the coupling rod 10 at the entire center is extended to form a whole. The center through rods 9 in the cross-axis frame 4 are mutually penetrated in a cross shape and connected to the center of the center through rod 9 to form a whole. One end of the shaft 10 on the cross-axis frame 4 is provided with an external threaded surface 11, and the surface of the external threaded surface 11 is threadedly connected with a sealing plate 12, and the sealing plate 12 is located in a groove on the extended fixing plate 3. The sealing plate 12 is connected to the external threaded surface 11 to abut and constrain the cross-axis frame 4 at the extended fixing plate 3 in the transmission shaft 1 and the transmission shaft 2, so as to complete the connection and binding of the coupling middle tube 5 and the abutting ball rod 6.

[0026] Furthermore, the abutment ball rod 6 is located at the center position between the transmission shaft 1 and the transmission shaft 2, and the surface of the abutment ball rod 6 is smoothly abutted against the extended fixing plate 3 on the transmission shaft 1 and the transmission shaft 2, so as to ensure multi-directional surrounding protection of the abutment ball rod 6.

[0027] Specifically, Figure 1-Figure 4 As shown, the locking assembly includes a locking screw 13 and an anti-slip groove 14, wherein the locking screw 13 is fixedly connected to the side of the abutting ball rod 6, and the anti-slip groove 14 is opened on one end of the coupling middle tube 5, and the inner wall of the anti-slip groove 14 is threadedly connected to the surface of the locking screw 13, and the locking screw 13 and the anti-slip groove 14 can be used to connect the abutting ball rod 6 and the cross-axis frame 4.

[0028] Example 2 Please refer to Figure 1-Figure 4 The difference between this embodiment and the embodiment 1 is that the extension fixing plate 3 on the transmission shaft 1 and the extension fixing plate 3 on the transmission shaft 2 are both divided into a long extension fixing plate 7 and a short extension fixing plate 8. The number of the long extension fixing plate 7 and the short extension fixing plate 8 on the transmission shaft 1 and the transmission shaft 2 are both two, and the two long extension fixing plates 7 and the short extension fixing plates 8 are symmetrically distributed on the transmission shaft 1 and the transmission shaft 2 with the axis of the transmission shaft 1 and the transmission shaft 2 as the axis of symmetry. The long extension fixing plate 7 and the short extension fixing plate 8 on the transmission shaft 1 and the long extension fixing plate 7 and the short extension fixing plate 8 on the transmission shaft 2 are staggered, and the adjacent long extension fixing plates 7 and the short extension fixing plates 8 do not contact each other, which ensures that the cross shaft frame 4 at different positions is unlocked and positioned on the coupling middle tube 5 and the abutment ball rod 6, and the lateral torsion resistance strength under the adjustable performance of the cross universal coupling is enhanced.

[0029] Working principle of the utility model: when in use, according to the commonly used force application points and force application strengths on the transmission shaft 1 and the transmission shaft 2, the force application rotation point between the transmission shaft 1 and the transmission shaft 2 can be adjusted and controlled, that is, the locking screw 13 and the anti-slip screw groove 14 can be used to abut the connection between the ball rod 6 and the cross-axis frame 4, so as to extend the connection of the coupling rod 10 at the center as a whole, and the center through rod 9 in the cross-axis frame 4 is connected to each other in a cross shape, connected at the inner center of the center through rod 9, and sealed The cover plate 12 is connected to the external threaded surface 11 to abut and constrain the cross-axis frame 4 at the extended fixing plate 3 in the transmission shaft 1 and the transmission shaft 2, and can complete the connection and binding effect of the coupling middle tube 5 and the abutting ball rod 6 to facilitate the transmission steering between the transmission shaft 1 and the transmission shaft 2. The cross-axis frame 4 at different positions can be unlocked and positioned on the coupling middle tube 5 and the abutting ball rod 6, thereby enhancing the lateral torsion resistance of the cross universal coupling under the adjustable performance and greatly reducing the damage rate of the cross universal coupling.

[0030] 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 cross universal coupling for resisting lateral torque, comprising a transmission shaft 1 (1), a transmission shaft 2 (2) being placed on the right side of the transmission shaft 1 (1), characterized in that: The side surfaces of the transmission shaft one (1) and the transmission shaft two (2) are fixedly connected to an extended fixing plate (3) with a groove; the interior of the extended fixing plate (3) is rotatably connected to a cross-axis frame (4) via a bearing; the surface of the cross-axis frame (4) is rotatably connected to a coupling middle tube (5) and an abutting ball rod (6); the coupling middle tube (5) is located between the transmission shaft one (1) and the transmission shaft two (2); one end of the coupling middle tube (5) is connected to a locking assembly; the surface of the abutting ball rod (6) is connected to the surface of the locking assembly.

2. A cross universal coupling for resisting lateral torque according to claim 1, characterized in that: The extended fixing plate (3) on the transmission shaft one (1) and the extended fixing plate (3) on the transmission shaft two (2) are both divided into a long extended fixing plate (7) and a short extended fixing plate (8). The number of the long extended fixing plate (7) and the short extended fixing plate (8) on the transmission shaft one (1) and the transmission shaft two (2) is two, and the two long extended fixing plates (7) and the two short extended fixing plates (8) are both symmetrically distributed on the transmission shaft one (1) and the transmission shaft two (2) with the axis of the transmission shaft one (1) and the transmission shaft two (2) as the axis of symmetry.

3. A cross universal coupling for resisting lateral torque according to claim 2, characterized in that: The long extension fixing plate (7) and the short extension fixing plate (8) on the transmission shaft one (1) and the long extension fixing plate (7) and the short extension fixing plate (8) on the transmission shaft two (2) are staggered with each other, and adjacent long extension fixing plates (7) and short extension fixing plates (8) do not contact each other.

4. A cross universal coupling for resisting lateral torque according to claim 1, characterized in that: The cross-axle frame (4) is a central through-rod (9), two shafts (10) are penetrated inside the central through-rod (9), and the middle parts of the two shafts (10) are mutually penetrated.

5. A cross universal coupling for resisting lateral torque according to claim 4, characterized in that: One end of the shaft rod (10) on the cross-axis frame (4) is provided with an external threaded surface (11), the surface of the external threaded surface (11) is threadedly connected with a cover plate (12), and the cover plate (12) is located in a groove on the extended fixing plate (3).

6. A cross universal coupling for resisting lateral torque according to claim 1, characterized in that: The locking assembly comprises a locking screw (13) and an anti-skid screw groove (14); the locking screw (13) is fixedly connected to the side surface of the abutting ball rod (6); the anti-skid screw groove (14) is opened on one end of the coupling middle tube (5); the inner wall of the anti-skid screw groove (14) is threadedly connected to the surface of the locking screw (13).

7. A cross universal coupling for resisting lateral torque according to claim 1, characterized in that: The abutting ball rod (6) is located at the center between the transmission shaft one (1) and the transmission shaft two (2), and the surface of the abutting ball rod (6) is in smooth abutment with the extended fixing plates (3) on the transmission shaft one (1) and the transmission shaft two (2).

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