A telescopic drum gear coupling

Abstract

The utility model discloses a telescopic drum gear coupling, comprising a shaft connection assembly and a roller end assembly, a tooth end assembly and a support ring assembly arranged at both ends of the shaft connection assembly, the end roller assembly comprising a first outer gear sleeve and a first inner gear ring, the first inner gear ring being sleeved on the first outer gear sleeve, a first sealing unit being arranged on the contact surface of the first inner gear ring and the first outer gear sleeve, and a first oil injection unit being arranged on the first inner gear ring; the tooth end assembly comprising a second outer gear sleeve and a second inner gear ring, the second outer gear sleeve being arranged on the shaft connection assembly, the second inner gear ring being sleeved on the first outer gear sleeve, a second oil injection unit being arranged on the second outer gear sleeve, and a third oil injection unit being arranged on the second inner gear ring. By arranging the oil injection unit, the utility model can conveniently lubricate the key contact surface of the coupling, reduce friction and wear, and extend the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a telescopic drum-shaped gear coupling. Background Art

[0002] The rod and wire mill coupling is the main transmission equipment on the rod and wire rolling site. It is connected to the reducer at one end and the roller at the other end to transmit power to the roller. The rod and wire coupling is mainly used for the connection between high-speed horizontal or vertical transmissions under heavy-load conditions. It requires a certain deflection angle and telescopic amount, high load-bearing capacity, high transmission accuracy and smooth transmission. In order to meet the requirements of high-quality and high-stability rod and wire production on site, the transmission equipment needs to adjust the angle in time according to actual needs.

[0003] In the prior art, the patent document with application number: CN201821065669.9 discloses a telescopic drum ball coupling with a sealing and fixing device, including an inner gear sleeve connected to one end of a spline shaft via a deep groove ball bearing assembly, and the spline shaft is also provided with an inner gear ring and an inner gear ring, and the inner gear sleeve and the inner gear ring are respectively fixed with an outer gear flat square and an inner gear flat square via a sealing and fixing device, and the outer surface of the inner gear flat square and the inner surface of the inner gear ring and the outer surface of the outer gear flat square and the inner surface of the inner gear sleeve are circumferentially processed with corresponding equal portions of axial semi-cylindrical concave straight grooves and inner gear concave straight grooves, a drum-shaped ball body is provided in the semi-cylindrical concave straight groove, the sealing and fixing device is located on the outer side of the drum-shaped ball body, and the sealing and fixing device includes a slip ring, and the outer side of the slip ring is provided with a plum blossom retaining ring fixed to the end face of the inner gear concave straight groove, and the outer side of the plum blossom retaining ring is provided with a 2# end cover, a sealing ring is provided inside the 2# end cover, and a 1# end cover is provided on the outer side of the sealing ring. The problem of coupling failure caused by axial movement of the telescopic drum gear coupling is solved.

[0004] However, the existing telescopic drum ball coupling lacks a lubrication structure. As the coupling runs, the friction of the drum structure consumes lubricating oil, resulting in increased wear and shortening the service life of the coupling. Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0005] The utility model aims to provide a telescopic drum gear coupling, which is used to solve the problem that the existing telescopic drum ball coupling lacks a lubrication structure. As the coupling runs, the friction of the drum structure consumes lubricating oil, resulting in increased wear and shortening the service life of the coupling.

[0006] The above technical objectives of the utility model are achieved by using the following technical solutions:

[0007] A telescopic drum gear coupling comprises a shaft coupling assembly and a roller end assembly, a tooth end assembly and a support ring assembly arranged at both ends of the shaft coupling assembly.

[0008] The end roller assembly comprises a first external gear sleeve and a first internal gear ring, the first internal gear ring is sleeved on the first external gear sleeve, a first sealing unit is arranged on the contact surface between the first internal gear ring and the first external gear sleeve, and a first oil injection unit is arranged on the first internal gear ring, and the first oil injection unit is used to lubricate the contact surface between the first external gear sleeve and the first internal gear ring;

[0009] The tooth end assembly includes a second external gear sleeve and a second internal gear ring. The second external gear sleeve is arranged on the shaft coupling assembly, and the second internal gear ring is sleeved on the first external gear sleeve. The second external gear sleeve is provided with a second oil injection unit, and the second oil injection unit is used to lubricate the contact surface between the second external gear sleeve and the shaft coupling assembly. The second internal gear ring is provided with a third oil injection unit, and the third oil injection unit is used to lubricate the contact surface between the second external gear sleeve and the second internal gear ring.

[0010] The utility model is further configured as follows: the first sealing unit includes a first sealing end cover, a sealing ring 1 and a sealing ring 2; the inner side of the first sealing end cover contacts the outer wall of the first external gear sleeve; the outer side of the first sealing end cover is detachably connected to the first external gear ring through a first connecting unit; a sealing groove 1 is provided on the inner wall of the first sealing end cover; a sealing ring 1 is provided in the sealing groove 1; the sealing ring 2 is located between the second external gear sleeve and the second internal gear ring; the inner ring of the sealing ring 2 contacts the outer wall of the second external gear sleeve; and the outer ring of the sealing ring 2 contacts the inner wall of the second internal gear ring.

[0011] The utility model is further configured as follows: a blocking cover is also provided on the first external gear shaft sleeve, the blocking cover is detachably mounted on the first external gear shaft sleeve through a second connecting unit, and a spring assembly is provided on the blocking cover.

[0012] The utility model is further configured as follows: a second sealing groove is provided on the connecting end of the first external gear shaft sleeve, and an end face sealing ring is provided in the second sealing groove.

[0013] The utility model is further configured as follows: the first oil injection unit comprises an oil injection channel 1, the oil injection channel 1 penetrates the first inner gear ring, and the lubricating oil can flow into the contact surface between the first outer gear sleeve and the first inner gear ring through the oil injection channel 1.

[0014] The utility model is further configured as follows: the second oil injection unit includes an oil injection channel 2, the input end of the oil injection channel 2 is located on the outer wall of the second external gear sleeve, the output end of the oil injection channel 2 is connected to the shaft coupling assembly, and the lubricating oil can flow into the contact surface between the second external gear sleeve and the shaft coupling assembly through the oil injection channel 2.

[0015] The utility model is further configured as follows: the third oil injection unit includes an oil injection channel three, the input end of the oil injection channel three is located on the outer wall of the second inner gear ring, the output end of the oil injection channel three is connected to the second outer gear sleeve, and the lubricating oil can flow into the contact surface of the second outer gear sleeve and the second inner gear ring through the oil injection channel three.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1. Easy maintenance and lubrication: By setting up the oil injection unit, the key contact surface of the coupling can be easily lubricated, reducing friction and wear and extending the service life. At the same time, the sealing end cover and baffle cover are detachable, making maintenance and replacement easier.

[0018] 2. Good sealing performance: Multiple sealing units are set inside the coupling, including sealing end covers, sealing rings, etc. These sealing elements can effectively prevent lubricating oil leakage and external impurities from entering, thereby ensuring the long-term and stable operation of the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a BB sectional view of the utility model.

[0021] Numeral labels: shaft assembly 10, roller end assembly 20, first external gear sleeve 21, first internal gear ring 22, sealing groove 1 23, sealing ring 1 24, sealing groove 2 25, end face sealing ring 26, oil injection channel 1 27, sealing ring 2 28, tooth end assembly 30, second external gear sleeve 31, second internal gear ring 32, oil injection channel 2 33, oil injection channel 3 34, support ring assembly 40, baffle cover 50, spring assembly 60 DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0023] like Figure 1 to Figure 2 As shown, the utility model proposes a telescopic drum gear coupling, comprising a shaft coupling assembly 10 and a roller end assembly 20, a tooth end assembly 30 and a support ring assembly 40 arranged at both ends of the shaft coupling assembly 10. The shaft coupling assembly 10 is used to transmit power, and the roller end assembly 20 cooperates with other components to realize rotation and torque transmission. The tooth end assembly 30 adopts a drum gear structure, which can better transmit torque and allow a certain angle deviation.

[0024] The end roller assembly includes a first external gear sleeve 21 and a first internal gear ring 22. The first internal gear ring 22 is sleeved on the first external gear sleeve 21. A first sealing unit is provided on the contact surface between the first internal gear ring 22 and the first external gear sleeve 21. A first oil injection unit is provided on the first internal gear ring 22. The first oil injection unit is used to lubricate the contact surface between the first external gear sleeve 21 and the first internal gear ring 22.

[0025] The tooth end assembly 30 includes a second external gear sleeve 31 and a second internal gear ring 32. The second external gear sleeve 31 is arranged on the shaft coupling assembly 10, and the second internal gear ring 32 is sleeved on the first external gear sleeve 21. The second external gear sleeve 31 is provided with a second oil injection unit, and the second oil injection unit is used to lubricate the contact surface between the second external gear sleeve 31 and the shaft coupling assembly 10. The second internal gear ring 32 is provided with a third oil injection unit, and the third oil injection unit is used to lubricate the contact surface between the second external gear sleeve 31 and the second internal gear ring 32.

[0026] In this embodiment, the first sealing unit includes a first sealing end cover, a sealing ring 1 24 and a sealing ring 2. The inner side of the first sealing end cover contacts the outer wall of the first outer gear sleeve 21. The outer side of the first sealing end cover is detachably connected to the first outer gear ring through the first connecting unit. A sealing groove 1 23 is provided on the inner wall of the first sealing end cover. A sealing ring 1 24 is provided in the sealing groove 1 23. The first sealing end cover is in close contact with the outer wall of the first outer gear sleeve 21 and cooperates with the sealing ring 1 24. This contact ensures that the end cover can effectively prevent the lubricating oil from leaking therefrom. The sealing ring 28 is located between the second outer gear sleeve 31 and the second inner gear ring 32. The inner ring of the sealing ring 28 contacts the outer wall of the second outer gear sleeve 31, and the outer ring of the sealing ring 28 contacts the inner wall of the second inner gear ring 32. This design enables the sealing ring 28 to effectively prevent the lubricating oil from leaking from the gap between the second outer gear sleeve 31 and the second inner gear ring 32.

[0027] In this embodiment, a blocking cover 50 is further provided on the first external gear shaft sleeve 21 . The blocking cover 50 is detachably mounted on the first external gear shaft sleeve 21 through a second connection unit. A spring assembly 60 is provided on the blocking cover 50 .

[0028] In this embodiment, a second sealing groove 25 is formed on the connecting end of the first external gear sleeve 21 , and an end face sealing ring 26 is disposed in the second sealing groove 25 .

[0029] In this embodiment, the first oil injection unit includes an oil injection channel 27 , which runs through the first inner gear ring 22 , and the lubricating oil can flow into the contact surface between the first outer gear sleeve 21 and the first inner gear ring 22 through the oil injection channel 27 .

[0030] In this embodiment, the second oil injection unit includes an oil injection channel 33, the input end of the oil injection channel 33 is located on the outer wall of the second external gear sleeve 31, and the output end of the oil injection channel 33 is connected to the shaft coupling assembly 10. The lubricating oil can flow into the contact surface between the second external gear sleeve 31 and the shaft coupling assembly 10 through the oil injection channel 33.

[0031] In this embodiment, the third oil injection unit includes an oil injection channel three 34, the input end of the oil injection channel three 34 is located on the outer wall of the second inner gear ring 32, and the output end of the oil injection channel three 34 is connected to the second outer gear sleeve 31. The lubricating oil can flow into the contact surface between the second outer gear sleeve 31 and the second inner gear ring 32 through the oil injection channel three 34.

[0032] The use process and principle of the utility model are as follows: Installation and connection: First, connect the shaft assembly 10 of the telescopic drum gear coupling to the equipment that needs to transmit power. Then, install the roller end assembly 20 and the tooth end assembly 30 at both ends of the shaft assembly 10 respectively to ensure that they fit tightly and accurately;

[0033] Lubrication and oil injection: The key contact surfaces of the coupling are lubricated through the first oil injection unit, the second oil injection unit and the third oil injection unit. Regularly check and replenish the lubricating oil to ensure that the friction coefficient between the components remains at a low level, reducing wear and heat generation;

[0034] Maintenance and care: According to the use of the equipment and the maintenance cycle, the telescopic drum gear coupling should be regularly maintained and cared for, including cleaning the components, replacing the severely worn sealing elements and lubricating oil, etc. At the same time, the connecting bolts and other fasteners should be checked and tightened to ensure the stability and reliability of the coupling.

[0035] In summary, the telescopic drum gear coupling is suitable for wide application in the field of mechanical transmission due to its efficient torque transmission, good sealing performance, easy maintenance and lubrication.

[0036] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0037] Any details not mentioned in the above specific embodiments of the present invention belong to the known technologies in the art and can be implemented with reference to the known technologies.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A telescopic drum gear coupling, comprising a shaft coupling assembly and a roller end assembly, a tooth end assembly and a support ring assembly arranged at both ends of the shaft coupling assembly, characterized in that: The roller end assembly comprises a first external gear sleeve and a first internal gear ring, wherein the first internal gear ring is sleeved on the first external gear sleeve, a first sealing unit is arranged on the contact surface between the first internal gear ring and the first external gear sleeve, and a first oil injection unit is arranged on the first internal gear ring, and the first oil injection unit is used to lubricate the contact surface between the first external gear sleeve and the first internal gear ring; The tooth end assembly includes a second external gear sleeve and a second internal gear ring, the second external gear sleeve is arranged on the shaft coupling assembly, the second internal gear ring is sleeved on the first external gear sleeve, the second external gear sleeve is provided with a second oil injection unit, the second oil injection unit is used to lubricate the contact surface between the second external gear sleeve and the shaft coupling assembly, the second internal gear ring is provided with a third oil injection unit, the third oil injection unit is used to lubricate the contact surface between the second external gear sleeve and the second internal gear ring.

2. A telescopic drum gear coupling according to claim 1, characterized in that: The first sealing unit includes a first sealing end cover, a sealing ring 1 and a sealing ring 2. The inner side of the first sealing end cover contacts the outer wall of the first external gear sleeve. The outer side of the first sealing end cover is detachably connected to the first external gear ring through a first connecting unit. A sealing groove 1 is provided on the inner wall of the first sealing end cover. A sealing ring 1 is provided in the sealing groove 1. The sealing ring 2 is located between the second external gear sleeve and the second internal gear ring. The inner ring of the sealing ring 2 contacts the outer wall of the second external gear sleeve, and the outer ring of the sealing ring 2 contacts the inner wall of the second internal gear ring.

3. The telescopic drum gear coupling according to claim 1, characterized in that: The first external gear shaft sleeve is also provided with a blocking cover, and the blocking cover is detachably mounted on the first external gear shaft sleeve through a second connecting unit, and the blocking cover is provided with a spring assembly.

4. The telescopic drum gear coupling according to claim 1, characterized in that: A second sealing groove is provided on the connecting end of the first external gear sleeve, and an end face sealing ring is arranged in the second sealing groove.

5. The telescopic drum gear coupling according to claim 1, characterized in that: The first oil injection unit comprises an oil injection channel 1, and the oil injection channel 1 penetrates the first inner gear ring. Lubricating oil can flow into the contact surface between the first outer gear sleeve and the first inner gear ring through the oil injection channel 1.

6. The telescopic drum gear coupling according to claim 1, characterized in that: The second oil injection unit includes an oil injection channel 2, the input end of which is located on the outer wall of the second external gear sleeve, and the output end of which is connected to the shaft coupling assembly. The lubricating oil can flow into the contact surface between the second external gear sleeve and the shaft coupling assembly through the oil injection channel 2.

7. The telescopic drum gear coupling according to claim 1, characterized in that: The third oil injection unit includes an oil injection channel three, the input end of the oil injection channel three is located on the outer wall of the second inner gear ring, and the output end of the oil injection channel three is connected to the second outer gear sleeve, and the lubricating oil can flow into the contact surface of the second outer gear sleeve and the second inner gear ring through the oil injection channel three.

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