Gear coupling, transmission device and steelmaking production line

Abstract

The utility model discloses a gear coupling, a transmission device and a steelmaking production line, and belongs to the technical field of machinery. The gear coupling comprises a spline shaft, a first matching assembly, a second matching assembly and an inner gear ring assembly, wherein the spline shaft, the first matching assembly, the second matching assembly and the inner gear ring assembly are sequentially combined and assembled; the first matching assembly comprises a first outer tooth shaft sleeve and a positioning disc, an inner spline is arranged in the first outer tooth shaft sleeve along the central axis, a step hole is formed in one side of the inner spline, and the inner spline is matched with the spline shaft; the spline shaft is provided with a shaft head, the shaft head can be matched with the stepped hole, the shaft head and the head portion of the spline shaft are matched to play a role in large-diameter centering, the shaft head and the head portion of the spline shaft jointly limit radial movement, and after the spline shaft is installed in place, the positioning disc and the shaft head are combined in a target mode to limit axial movement.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, and more specifically relates to a gear coupling, a transmission device and a steelmaking production line. Background Art

[0002] A gear coupling is a rigid-flexible coupling consisting of an inner ring gear with an equal number of teeth and a flanged half-coupling with external teeth. External teeth are available in two profiles: spur and drum. Drum gear couplings allow for greater angular displacement (compared to spur gear couplings), improving tooth contact conditions, increasing torque transmission, and extending service life. Gear couplings compensate for radial, axial, and angular axis misalignment. They also offer advantages such as compact design, a small turning radius, high load capacity, high transmission efficiency, low noise, and long maintenance intervals. They are particularly suitable for low-speed, heavy-load applications in industries such as metallurgy, mining, and lifting and transportation. They are also suitable for shafting in various types of machinery, including petroleum, chemical, and general-purpose machinery. During operation, the two shafts experience relative angular displacement, causing periodic axial sliding between the inner and outer gear surfaces, which inevitably leads to wear and power loss. Therefore, gear couplings must operate in a well-sealed environment. With their small radial dimensions and high load capacity, they are often used in shafting transmissions under low-speed, heavy-load conditions. High-precision, dynamically balanced gear couplings can be used in high-speed transmissions, such as those used in gas turbine shafting. Currently, drum gear couplings are widely used to replace spur gear couplings both domestically and internationally, as they offer advantages over spur gear couplings in terms of load capacity, angular displacement compensation, tooth contact conditions, ease of assembly and disassembly, and transmission efficiency.

[0003] A search revealed that, for example, Chinese patent CN203176196U discloses a gear coupling comprising a spline flange sleeve, a spring, a guide post, a spline shaft, and a stud. The spline flange sleeve is connected to the spline shaft via the stud. The internal splines on the spline flange sleeve mate with the external splines on the spline shaft. The spline flange sleeve is provided with a guide post at its core, and a countersunk hole is provided at the core of the spline shaft corresponding to the guide post. A spring is wound around the guide post, one end of the spring being connected to the bottom of the countersunk hole, while the other end of the spring is fixed relative to the spline flange sleeve. A positioning nut is provided on the stud close to the spline shaft. However, in actual use, this gear coupling exhibits significant radial and axial movement, resulting in poor operational stability and a negative impact on safety. Summary of the Invention

[0004] 1. Problem to be solved

[0005] In view of the problem of poor stability in use of the prior art, the utility model provides a gear coupling, a transmission device and a steelmaking production line, which reduce radial and axial movement, ensure stability in use and improve safety performance.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0008] A first aspect of the present invention provides a gear coupling, comprising a spline shaft, a first mating component, a second mating component and an inner gear ring component, wherein the spline shaft, the first mating component, the second mating component and the inner gear ring component are assembled in sequence;

[0009] The first mating component includes a first external gear sleeve and a positioning plate, wherein the first external gear sleeve has an internal spline built in along the central axis, and a stepped hole is opened along one side of the internal spline, and the internal spline is mated with the spline shaft;

[0010] The spline shaft has a shaft head, which can cooperate with the step hole. The shaft head cooperates with the head of the spline shaft to play a large diameter centering role. They jointly limit radial movement. After the spline shaft is installed in place, the positioning plate is engaged with the shaft head through the hexagon socket screw to limit axial movement.

[0011] According to any implementation scheme of the first aspect of the purpose of the present utility model, the inner gear ring assembly includes an inner gear ring body and two sets of sealing mechanisms, the sealing mechanisms include a tooth pressure cover, a sealing pressure cover and a sealing ring, the internal straight teeth of the inner gear ring body cooperate with the external teeth of the second external gear sleeve and the external teeth of the first external gear sleeve, the tooth position is limited by the tooth pressure cover, and a sealing ring is provided between the tooth pressure cover and the sealing pressure cover to prevent grease leakage.

[0012] According to any implementation scheme of the first aspect of the purpose of the present utility model, the second mating component includes a second external gear sleeve, a nylon buffer ring and a retaining spring, the second external gear sleeve is provided with a mounting groove for setting the retaining spring, the nylon buffer ring is sleeved on the second external gear sleeve located between the sealing cover and the retaining spring, the retaining spring is mainly used to limit the position of the nylon buffer ring and alleviate part of the impact, and the nylon buffer ring is mainly used to control the total installation length of the coupling and play a buffering role during clutching.

[0013] According to any implementation scheme of the first aspect of the purpose of the present utility model, there is a gap H1 between the first external gear shaft sleeve and the second external gear shaft sleeve after assembly; there is a gap H2 between the nylon buffer ring and the retaining spring, and the total length of the gap H1 and the gap H2 is a constant value.

[0014] According to any embodiment of the first aspect of the present utility model, the shaft head of the spline shaft includes a journal having a circular arc transition surface.

[0015] According to any implementation scheme of the first aspect of the present utility model, the positioning plate is sunken into the step hole, so that the end surface gap H3 between the positioning plate and the second external gear sleeve is larger than the gap H1.

[0016] According to any embodiment of the first aspect of the present utility model, an oil chamber and a symmetrical oil nozzle connected to the oil chamber are provided at the center of the inner gear ring body (which can be connected to a lubrication station or can be refueled manually).

[0017] A second aspect of the present invention provides a transmission device, comprising the gear coupling described in the first aspect, wherein the coupling connects a motor drive end and an actuator end.

[0018] The third aspect of the present invention provides a steelmaking production line, comprising the transmission device described in the second aspect, which improves the stability of the overall operation of the production line and significantly reduces operation and maintenance costs.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) In the gear coupling of the present invention, the shaft head and the head of the spline shaft cooperate to play a large diameter centering role, and they jointly limit radial movement. After the spline shaft is installed in place, the positioning plate is engaged with the shaft head through the hexagon socket screw to limit axial movement, thereby enhancing safety in use;

[0022] (2) In the gear coupling of the present invention, the retaining spring is mainly used to limit the position of the nylon buffer ring and alleviate some of the impact. The nylon buffer ring is mainly used to control the total installation length of the coupling and play a buffering role during clutching, further improving the stability during use and making it safe and reliable to use;

[0023] (3) The gear coupling of the present invention is provided with an oil chamber and a symmetrical oil nozzle (which can be connected to a lubrication station or refueled manually) at the center of the inner gear ring body. The position of the teeth is limited by a gear pressure cover, and a sealing ring is provided between the gear pressure cover and the sealing pressure cover to prevent grease leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structures described herein and are not necessarily drawn to scale.

[0025] Figure 1 This is a structural sectional view of the gear coupling of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the gear coupling of the present invention without a spline shaft;

[0027] Figure 3 for Figure 1 A magnified view of part A;

[0028] Figure 4 for Figure 1 A magnified view of part B;

[0029] Figure 5 for Figure 1 Magnified view of part C;

[0030] Figure 6 This is a schematic structural diagram of the spline shaft of the gear coupling of the present invention;

[0031] Figure 7 This is a schematic structural diagram of the first external gear sleeve of the gear coupling of the present invention;

[0032] Description of reference numerals:

[0033] 10. Spline shaft; 11. Shaft head; 12. Shaft journal;

[0034] 20. First mating component; 21. First external gear sleeve; 211. Internal spline; 212. Step hole; 22. Positioning plate;

[0035] 30. Second mating component; 31. Second external gear sleeve; 311. Mounting groove; 32. Nylon buffer ring; 33. Circlip;

[0036] 40. Inner gear ring assembly; 41. Inner gear ring body; 411. Oil chamber; 412. Oil nozzle; 42. Gear pressure cover; 43. Sealing cover; 44. Sealing ring. DETAILED DESCRIPTION

[0037] The present disclosure may be more readily understood by reference to the following description in conjunction with the accompanying drawings and examples, all of which constitute a part of this disclosure. It should be understood that the present disclosure is not limited to the specific products, methods, conditions, or parameters described and / or illustrated herein. Further, the terms used herein are for the purpose of describing specific embodiments by way of example only and are not intended to be limiting unless otherwise indicated.

[0038] It should also be understood that, for the sake of clarity, certain features of the present disclosure may be described herein in the context of separate embodiments, but may also be provided in combination with each other in a single embodiment. That is, unless clearly incompatible or specifically not included, each separate embodiment is considered to be combinable with any other embodiment, and the combination is considered to represent another different embodiment. Conversely, for the sake of simplicity, various features of the present disclosure described in the context of a single embodiment may also be provided individually or in any sub-combination. Finally, although a particular embodiment may be described as part of a series of steps or part of a more general structure, each step or sub-structure itself may also be considered to be an independent embodiment.

[0039] Unless otherwise indicated, it should be understood that each individual element in a list and each combination of individual elements in that list will be interpreted as a different embodiment. For example, a list of embodiments expressed as "A, B, or C" should be interpreted to include embodiments "A," "B," "C," "A or B," "A or C," "B or C," or "A, B, or C."

[0040] In this disclosure, the singular forms of the articles "a," "an," and "the" also include the corresponding plural reference, and a reference to a specific value includes at least that specific value unless the context clearly dictates otherwise. Thus, for example, a reference to "a substance" is a reference to at least one of that substance and equivalents thereof.

[0041] Terms including ordinal numbers such as "first" and "second" may be used to explain various components or fluids, but these components and fluids are not limited by these terms. Therefore, without departing from the teachings of the present disclosure, these terms are only used to distinguish the component / fluid from another component / fluid.

[0042] When items are described by using the conjunction terms "... and / or..." etc., the description should be understood to include any one and all combinations of one or more of the associated listed items.

[0043] In general, the use of the term "about" indicates an approximate value that can vary depending on the desired properties obtained by the disclosed subject matter and will be interpreted in a context-dependent manner based on function. Therefore, one of ordinary skill in the art will be able to interpret a certain degree of difference on a case-by-case basis. In some cases, the number of important figures used when expressing a particular value can be a representative technique for determining the difference allowed by the term "about". In other cases, a gradient in a range of values ​​can be used to determine the range of differences allowed by the term "about". Further, all ranges in this disclosure are inclusive and combinable, and reference to a value stated in a range includes every value within that range.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; any and all combinations of terms and / or terms used herein include one or more of the associated listed items.

[0045] Combine Figures 1 to 7 As shown, the gear coupling of this embodiment includes a spline shaft 10, a first mating component 20, a second mating component 30 and an inner ring gear component 40, and the spline shaft 10, the first mating component 20, the second mating component 30 and the inner ring gear component 40 are assembled in sequence.

[0046] Among them, such as Figure 1 、 Figure 2 and Figure 7 As shown, the first mating component 20 includes a first external gear sleeve 21 and a positioning plate 22. The first external gear sleeve 21 has an internal spline 211 built in along the center axis, and a step hole 212 is opened along one side of the internal spline 211. The internal spline 211 cooperates with the spline shaft 10 to realize the clutch function of the spline shaft 10 and the first external gear sleeve 21.

[0047] like Figure 6 As shown, the spline shaft 10 has a shaft head 11, and the shaft head 11 can cooperate with the step hole 212. The shaft head 11 cooperates with the head of the spline shaft 10 to play a large diameter centering role, and they jointly limit radial movement. After the spline shaft 10 is installed in place, the positioning plate 22 is targeted with the shaft head 11 through the hexagon socket screw to limit axial movement.

[0048] Furthermore, in order to reduce the impact force between the positioning plate 22 and the shaft head 11 , the shaft head 11 of the spline shaft 10 includes a journal 12 . The journal 12 has an arc transition surface, and the journal 12 can abut against the step hole 212 .

[0049] Combine Figure 1 As shown, the inner gear ring assembly 40 includes an inner gear ring body 41 and two sets of sealing mechanisms, wherein the sealing mechanisms include a tooth pressure cover 42, a sealing pressure cover 43 and a sealing ring 44. The internal straight teeth of the inner gear ring body 41 cooperate with the external teeth of the second external gear shaft sleeve 31 and the external teeth of the first external gear shaft sleeve 21. The tooth position is limited by the tooth pressure cover 42. A sealing ring 44 is provided between the tooth pressure cover 42 and the sealing pressure cover 43 to prevent grease leakage.

[0050] In this embodiment, an oil chamber 411 and a symmetrical oil nozzle 412 connected to the oil chamber 411 are provided at the center of the inner gear ring body 41. The inner gear ring body 41 can be connected to a lubrication station or refueled manually. The meshing part of the inner gear ring body 41 is immersed in the oil chamber 411, which can provide better lubrication effect.

[0051] exist Figure 3 and Figure 4 In the embodiment, the second mating assembly 30 includes a second externally toothed sleeve 31, a nylon buffer ring 32, and a retaining spring 33. The second externally toothed sleeve 31 is provided with a mounting groove 311 for mounting the retaining spring 33. The nylon buffer ring 32 is mounted on the second externally toothed sleeve 31 between the sealing gland 43 and the retaining spring 33. The retaining spring 33 is primarily used to limit the position of the nylon buffer ring 32 and alleviate some of the impact. The nylon buffer ring 32 is primarily used to control the total installed length of the coupling and to provide a buffering effect during clutching. The aforementioned nylon buffer ring 32 is a preferred choice, and the buffer ring can also be replaced with other materials, such as polyurethane.

[0052] Combine Figure 4 and Figure 5 As shown, a gap H1 exists between the first externally toothed bushing 21 and the second externally toothed bushing 31 after assembly; a gap H2 exists between the nylon buffer ring 32 and the retaining spring 33. The total length of the gap H1 and the gap H2 is constant. The positioning plate 22 is recessed into the stepped hole 212, so that the end surface gap H3 between the positioning plate 22 and the second externally toothed bushing 31 is greater than the gap H1.

[0053] This embodiment also provides a transmission device including the above-mentioned gear coupling, which connects the motor drive end and the execution equipment end; and this embodiment also provides a steelmaking production line including the above-mentioned transmission device, which improves the overall operation stability of the production line and significantly reduces operation and maintenance costs.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A gear coupling, comprising a spline shaft (10), a first mating component (20), a second mating component (30) and an inner gear ring component (40), wherein the spline shaft (10), the first mating component (20), the second mating component (30) and the inner gear ring component (40) are assembled in sequence; characterized in that: The first mating component (20) includes a first external gear shaft sleeve (21) and a positioning plate (22), wherein the first external gear shaft sleeve (21) is provided with an internal spline (211) along a central axis, and a stepped hole (212) is provided along one side of the internal spline (211), wherein the internal spline (211) is mated with the spline shaft (10); The spline shaft (10) has a shaft head (11), which can cooperate with the step hole (212) to limit radial movement, and the positioning disk (22) is targeted with the shaft head (11) to limit axial movement.

2. The gear coupling according to claim 1, characterized in that: The inner gear ring assembly (40) includes an inner gear ring body (41) and two sets of sealing mechanisms, wherein the sealing mechanisms include a tooth pressure cover (42), a sealing pressure cover (43) and a sealing ring (44). The internal straight teeth of the inner gear ring body (41) cooperate with the external teeth of the second external gear shaft sleeve (31) and the external teeth of the first external gear shaft sleeve (21). The tooth pressure cover (42) limits the position of the teeth. A sealing ring (44) is provided between the tooth pressure cover (42) and the sealing pressure cover (43) to prevent grease leakage.

3. The gear coupling according to claim 2, characterized in that: The second mating component (30) includes a second externally toothed shaft sleeve (31), a buffer ring (32) and a retaining spring (33); the second externally toothed shaft sleeve (31) is provided with a mounting groove (311) for arranging the retaining spring (33); the buffer ring (32) is sleeved on the second externally toothed shaft sleeve (31) between the sealing cover (43) and the retaining spring (33).

4. The gear coupling according to claim 3, characterized in that: A gap H1 exists between the first external gear shaft sleeve (21) and the second external gear shaft sleeve (31) after assembly; a gap H2 exists between the nylon buffer ring (32) and the retaining spring (33), and the total length of the gap H1 and the gap H2 is a constant value.

5. The gear coupling according to claim 4, characterized in that: The shaft head (11) of the spline shaft (10) comprises a shaft neck (12), and the shaft neck (12) has a circular arc transition surface.

6. The gear coupling according to claim 5, characterized in that: The positioning disc (22) is recessed into the stepped hole (212), so that the end surface gap H3 between the positioning disc (22) and the second external gear sleeve (31) is larger than the gap H1.

7. The gear coupling according to claim 6, characterized in that: An oil chamber (411) and a symmetrical oil nozzle (412) connected to and in communication with the oil chamber (411) are provided at the center of the inner gear ring body (41).

8. A transmission device, characterized in that: A gear coupling comprising the gear coupling described in any one of claims 1 to 7.

9. A steelmaking production line, characterized in that: Including the transmission device according to claim 8.

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