A coupling

Abstract

The present invention discloses a coupling, belonging to the technical field of couplings, comprising a first retaining ring, a second retaining ring and a support shaft. Through a unique design structure, efficient, stable and reliable power transmission between a driving shaft and a driven shaft is achieved. In a specific implementation, the first retaining ring and the second retaining ring are respectively used to engage with the driving shaft and the driven shaft to ensure the stability of power transmission. The support shaft serves as a core component connecting the two, and its two ends are respectively slidably connected with the first retaining ring and the second retaining ring, allowing a certain flexibility in the axial direction to accommodate the possible slight position deviation between the driving shaft and the driven shaft. In order to further enhance the buffering and shock absorbing capacity of the coupling, the present invention arranges an elastic element inside the support shaft. These elastic elements include a protrusion arranged in the first inner groove, a buffer plate in the second inner groove, and a buffer spring connecting the two buffer plates.

Description

Technical Field

[0001] The invention relates to the technical field of couplings, and in particular to a coupling. Background Art

[0002] In mechanical transmission systems, couplings are important components that connect the driving shaft and the driven shaft, and they undertake the key task of transmitting torque and rotational motion. Traditional coupling designs often face problems such as axial displacement, vibration shock, and wear after long-term operation. These challenges may not only lead to low power transmission efficiency, but also cause equipment failure, affecting the stability and service life of the entire transmission system.

[0003] When there is a slight misalignment between the driving shaft and the driven shaft, traditional couplings often have difficulty absorbing or compensating these deviations effectively, which can lead to damage to the coupling and other components of the transmission system. In addition, vibration and shock are also common problems in mechanical transmission systems, which may come from factors such as the imbalance of the equipment itself, interference from the external environment, or load changes. These factors may cause additional loads on the coupling, accelerating its wear and aging. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, an object of the present invention is to provide a coupling that can compensate for the axial displacement between the driving shaft and the driven shaft and disperse the impact and vibration during the rotation process.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a coupling for connecting a driving shaft and a driven shaft, comprising:

[0006] A first clamping ring, wherein the first clamping ring is used for clamping with the driving shaft;

[0007] a second snap ring, the second snap ring being used for snapping with the driven shaft;

[0008] A support shaft, wherein the support shaft is connected between the first retaining ring and the second retaining ring, and both ends of the support shaft are respectively slidably connected with the first retaining ring and the second retaining ring along the axis direction thereof, and when the first retaining ring rotates with the driving shaft, the first retaining ring can drive the second retaining ring to rotate through the support shaft;

[0009] Wherein, the support shaft comprises an outer ring and an inner ring, the outer ring is sleeved on the outside of the inner ring, the outer ring is clamped with a first clamping ring, and the inner ring is clamped with a second clamping ring.

[0010] Preferably, a plurality of first inner grooves and second inner grooves are provided on the inner wall of the outer ring, the first inner grooves and the second inner grooves are evenly spaced, and the first inner grooves and the second inner grooves are connected by an elastic element.

[0011] Preferably, the elastic element includes a protrusion arranged in the first inner groove and fixed to the inner ring, two buffer plates are slidably installed inside the second inner groove, and a buffer spring is connected between the two buffer plates, a connecting groove is connected between the adjacent first inner groove and the second inner groove, and the protrusion and the buffer plate in the adjacent second inner groove are connected by a connecting plate.

[0012] Preferably, the first clamping ring comprises two first clamping bodies, the inner walls of the first clamping bodies are each provided with a first clamping strip, and the outer surface of the outer ring is provided with a groove adapted to the first clamping strip;

[0013] The second clamping ring includes two second clamping bodies, the ends of the second clamping bodies are fixed with clamping sleeves, and the inner ring is provided with a groove adapted to the clamping sleeve.

[0014] Preferably, the two first card bodies are fixed by bolts, and the two second card bodies are also fixed by bolts.

[0015] Preferably, both the driving shaft and the driven shaft are provided with keyways, and splines are fixed inside the keyways. One of the first card bodies is provided with a slide groove that matches the splines on the driving shaft, and one of the second card bodies is provided with a slide groove that matches the splines on the driven shaft. Any of the first card bodies and the second card bodies are respectively connected to the driving shaft and the driven shaft by bolts.

[0016] Preferably, a second clamping strip is provided on the outer wall of the clamping sleeve, the first clamping strip and the second clamping strip are both arc strips, and the grooves are both arc-shaped grooves.

[0017] Preferably, the first inner groove and the second inner groove are both arc-shaped grooves, and the connection between the protrusion and the buffer plate and the arc-shaped groove is an arc surface connection.

[0018] The beneficial effects of the present invention are:

[0019] By designing a support shaft with sliding connection and relative rotation capabilities, the present invention can absorb or compensate for possible axial displacement between the driving shaft and the driven shaft, thereby improving the adaptability and service life of the coupling. The elastic elements such as buffer springs and bumps and buffer plates made of elastic materials are arranged inside the support shaft, which can effectively absorb and disperse the impact and vibration during the rotation process, and protect the coupling and other components of the entire transmission system from damage. By adopting the clamping method of the clamping ring and the shaft, and setting structures such as splines and slide grooves, the present invention ensures the firm connection and precise alignment between the driving shaft and the driven shaft and the coupling, and improves the stability during the rotation process. The coupling has a simple and compact design structure, is easy to disassemble and reassemble, and is convenient for installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the driving shaft, driven shaft and support shaft.

[0021] Figure 2 This is an exploded diagram of the connection between the driving shaft, driven shaft and support shaft.

[0022] Figure 3 It is a schematic structural diagram of the second clamping ring of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the first clamping ring of the present invention.

[0024] Figure 5 It is a cross-sectional view of the outer ring and the inner ring of the present invention.

[0025] Figure 6 for Figure 5 Enlarged view of point A in .

[0026] In the figure: 1, driving shaft, 2, driven shaft, 3, first retaining ring, 301, first card body, 4, second retaining ring, 401, second card body, 402, sleeve, 5, support shaft, 501, outer ring, 502, inner ring, 503, first inner groove, 504, protrusion, 505, buffer plate, 506, buffer spring, 507, second inner groove, 508, connecting plate, 6, spline. DETAILED DESCRIPTION

[0027] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0028] Embodiment 1

[0029] like Figure 1-Figure 2 As shown, in this embodiment, a coupling is provided, which is used to connect the driving shaft 1 and the driven shaft 2, including a first snap ring 3, a second snap ring 4 and a support shaft 5, and the first snap ring 3 is used to snap with the driving shaft 1, and the first snap ring 3 is used to snap tightly with the driving shaft 1. When the driving shaft 1 rotates, the first snap ring 3 will rotate accordingly, serving as a power input end. This snap connection method is usually achieved through a snap connection structure to ensure that it will not slip or disengage during the power transmission process.

[0030] The second snap ring 4 is used to be clamped with the driven shaft 2, corresponding to the first snap ring 3. The second snap ring 4 is used to be clamped with the driven shaft 2. It is the end of the power transmission. When the first snap ring 3 drives the support shaft 5 to rotate, the second snap ring 4 will also rotate accordingly, thereby driving the driven shaft 2. The clamping of the second snap ring 4 with the driven shaft 2 prevents sliding or loosening during the power transmission process.

[0031] The support shaft 5 is connected between the first snap ring 3 and the second snap ring 4. The two ends of the support shaft 5 are respectively connected to the first snap ring 3 and the second snap ring 4 in a sliding manner along the axis direction. When the first snap ring 3 rotates with the driving shaft 1, the first snap ring 3 can drive the second snap ring 4 to rotate through the support shaft 5. The support shaft 5 is the core component connecting the first snap ring 3 and the second snap ring 4, which enables the two to slide relative to each other and transmit rotational motion. The design of the support shaft 5 allows it to have a certain degree of flexibility in the axis direction to adapt to the possible slight position deviation between the driving shaft 1 and the driven shaft 2. At the same time, the structure of the support shaft 5 ensures that during the power transmission process, the rotation of the first snap ring 3 can smoothly and efficiently drive the rotation of the second snap ring 4.

[0032] The support shaft 5 includes an outer ring 501 and an inner ring 502. The outer ring 501 is rotatably sleeved on the outside of the inner ring 502. The outer ring 501 is clamped with the first clamping ring 3, and the inner ring 502 is clamped with the second clamping ring 4. The support shaft 5 consists of two main parts: the outer ring 501 and the inner ring 502, which are connected by a rotating sleeve. The outer ring 501 is clamped with the first clamping ring 3. When the first clamping ring 3 rotates, the outer ring 501 rotates accordingly; while the inner ring 502 is clamped with the second clamping ring 4. The rotation of the inner ring 502 will drive the second clamping ring 4 to rotate. A certain relative rotation is allowed between the outer ring 501 and the inner ring 502, which helps to absorb or compensate for the slight angular deviation or axial displacement that may exist between the driving shaft 1 and the driven shaft 2, thereby improving the adaptability and service life of the coupling.

[0033] Embodiment 2

[0034] like Figure 1-Figure 6 As shown, based on the first embodiment, this embodiment provides an internal buffer component of the support shaft 5, which is as follows:

[0035] A plurality of first inner grooves 503 and second inner grooves 507 are provided on the inner wall of the outer ring 501. The first inner grooves 503 and second inner grooves 507 are evenly spaced and connected to each other through elastic elements. In the design of the support shaft 5 of the coupling, the outer ring 501 is sleeved on the outer side of the inner ring 502. This sleeve structure allows the outer ring 501 to rotate relative to the inner ring 502, thereby transmitting the rotational power. The first inner grooves 503 and second inner grooves 507 are evenly spaced and distributed along the inner wall of the outer ring 501. This even distribution helps to ensure that the force on the outer ring 501 is evenly dispersed during the rotation process, thereby avoiding local stress concentration and potential damage risks. The first inner grooves 503 and second inner grooves 507 are connected to each other through elastic elements. These elastic elements (which may be springs, rubber pads or other elastic materials) play an important role in buffering and shock absorption during the rotation process. When there is a slight misalignment (such as angular deviation or axial displacement) between the driving shaft 1 and the driven shaft 2, the elastic element can absorb the impact and vibration caused by these deviations, thereby protecting the coupling and other components of the entire transmission system from damage.

[0036] The elastic element includes a protrusion 504 arranged in the first inner groove 503 and fixed to the inner ring 502. Two buffer plates 505 are slidably installed inside the second inner groove 507, and a buffer spring 506 is connected between the two buffer plates 505. The buffer spring 506 is usually made of elastic material and has good elasticity and recovery. When the buffer plate 505 is impacted or pressurized, the buffer spring 506 will deform to absorb energy and quickly return to its original state after the impact, thereby protecting the entire coupling from damage. A connecting groove is connected between the adjacent first inner grooves 503 and the second inner grooves 507, and the adjacent first inner grooves 503 and the second inner grooves 507 are connected through the connecting groove. These connecting grooves not only provide an installation path for the connecting plate 508 between the protrusion 504 and the buffer plate 505, but also may allow lubricating oil or other fluids to pass through to a certain extent to improve lubrication conditions and reduce friction and wear. The protrusion 504 and the buffer plate 505 in the adjacent second inner groove 507 are connected by the connecting plate 508. The composition of the elastic element: The elastic element is composed of multiple parts, including a protrusion 504 fixed to the inner ring 502 in the first inner groove 503. These protrusions 504 are not only tightly fixed to the inner ring 502, but also play a role in supporting and transmitting force. When the outer ring 501 rotates, the protrusions 504 will move with it, but due to their fixed connection with the inner ring 502, they will remain in place relatively stably, providing basic support for the entire elastic system. Inside the second inner groove 507, two buffer plates 505 are slidably installed. These buffer plates 505 can slide freely in the second inner groove 507 to adapt to forces and displacements in different directions, absorb and disperse the impact and vibration from the rotation process, and a buffer spring 506 is connected between the two buffer plates 505. The bump 504 and the buffer plate 505 in the adjacent second inner groove 507 are connected by a connecting plate 508. The connecting plate 508 is a rigid or elastic connecting member, which ensures the relative position between the bump 504 and the buffer plate 505 is stable and allows the transmission of force and displacement between them. When the driving shaft 1 rotates, the bump 504 will drive the connecting plate 508 to move together, and then transmit the force and displacement to the buffer plate 505 through the connecting plate 508, and finally realize the power transmission from the driving shaft 1 to the driven shaft 2.

[0037] Embodiment 3

[0038] like Figure 1-Figure 6 As shown, based on the first and second embodiments, this embodiment provides a connection between the clamping ring and the shaft, which is as follows:

[0039] The first clamping ring 3 includes two first clamping bodies 301, each of which has a first clamping strip on its inner wall, and a groove matching the first clamping strip on the outer surface of the outer ring 501. The first clamping ring 3 is composed of two first clamping bodies 301. This design is to increase the surface area in contact with the driving shaft 1 and improve the stability of the connection. Each first clamping strip is provided on the inner wall of each first clamping body 301. These first clamping strips are convex structures made of metal or other hard materials, and are used to cooperate with the groove on the driving shaft 1 to achieve a firm clamping connection;

[0040] The second retaining ring 4 includes two second card bodies 401, and a retaining sleeve 402 is fixed to the end of the second card body 401. The inner ring 502 is provided with a groove adapted to the retaining sleeve 402. The second retaining ring 4 is composed of two second card bodies 401. Similar to the first retaining ring 3, this design is also to increase the surface area in contact with the driven shaft 2.

[0041] A sleeve 402 is fixed to the end of each second card body 401. The sleeve 402 is a structure made of a metal ring or other hard material, which is used to cooperate with the groove on the inner ring 502. The inner ring 502 is provided with a groove adapted to the sleeve 402. When the second clamping ring 4 is installed on the support shaft 5, the sleeve 402 at the end of the second card body 401 will be embedded in the groove of the inner ring 502, thereby achieving a tight connection with the inner ring 502. This connection method also ensures the coaxiality between the second clamping ring 4 and the support shaft 5, and prevents relative sliding during rotation.

[0042] The two first card bodies 301 are fixed by bolts, the two second card bodies 401 are also fixed by bolts, and the two first card bodies 301 and the two second card bodies 401 are firmly fixed by bolts. This design enhances the overall structural strength of the clamping ring, can be more stably connected to the driving shaft 1 and the driven shaft 2, and improves the stability of the coupling during rotation.

[0043] The driving shaft 1 and the driven shaft 2 are both provided with keyways, and splines 6 are fixed inside the keyways. A slideway adapted to the splines 6 on the driving shaft 1 is provided inside one of the first card bodies 301, and a slideway adapted to the splines 6 on the driven shaft 2 is provided inside one of the second card bodies 401. Any first card body 301 and second card body 401 are respectively connected to the driving shaft 1 and the driven shaft 2 by bolts. The driving shaft 1 and the driven shaft 2 are both provided with keyways, and splines 6 are fixed thereon to increase the connection strength. Slideways adapted to the splines 6 on the driving shaft 1 and the driven shaft 2 are respectively provided inside the first card body 301 and the second card body 401 to ensure precise alignment. Subsequently, the first card body 301 and the second card body 401 are respectively firmly connected to the driving shaft 1 and the driven shaft 2 by bolts. This design not only ensures the stability of the connection, but also facilitates installation and maintenance.

[0044] A second clamping strip is provided on the outer wall of the clamping sleeve 402, the first clamping strip and the second clamping strip are arc strips, and the grooves are arc grooves. The second clamping strip is provided on the outer wall of the clamping sleeve 402, which corresponds to the arc first clamping strip on the first clamping body 301. At the same time, the grooves on the outer ring 501 and the inner ring 502 are also arc-shaped. This design ensures the close fit and smooth sliding between the first clamping strip, the second clamping strip and the grooves.

[0045] The first inner groove 503 and the second inner groove 507 are both arc-shaped grooves, and the connection between the protrusion 504 and the buffer plate 505 and the arc-shaped grooves is an arc-surface connection. The first inner groove 503 and the second inner groove 507 are both designed as arc-shaped grooves, and the connection surfaces between the protrusion 504 and the buffer plate 505 and these arc-shaped grooves are also designed with an arc-surface. This arc-surface connection helps to reduce friction and wear, improve the durability of the connection, and also helps to better disperse and absorb impact force during rotation.

[0046] Working principle:

[0047] When the driving shaft 1 rotates, the first clamping ring 3 is tightly connected to the driving shaft 1 through the clamping structure and rotates with it. The rotation of the first clamping ring 3 is transmitted to the second clamping ring 4 through the support shaft 5, thereby driving the driven shaft 2 to rotate. The design of the support shaft 5 allows it to have a certain degree of flexibility in the axial direction to adapt to the possible slight position deviation between the driving shaft 1 and the driven shaft 2.

[0048] Inside the support shaft 5, the outer ring 501 and the inner ring 502 are connected by a rotating sleeve connection, and multiple groups of elastic elements are arranged. When there is misalignment between the driving shaft 1 and the driven shaft 2 or external impact, these elastic elements can absorb and disperse these deviations and impact forces to protect the coupling and the transmission system from damage.

[0049] The first clamping ring 3 and the second clamping ring 4 are respectively matched with the grooves on the driving shaft 1 and the driven shaft 2 through the first clamping strip, the second clamping strip and the clamping sleeve 402 to achieve a firm clamping connection. At the same time, the first clamping body 301 and the second clamping body 401 are fixed by bolts to enhance the overall structural strength of the clamping ring. In addition, splines 6 and sliding grooves are also provided on the driving shaft 1 and the driven shaft 2 to ensure precise alignment and firm connection between the clamping ring and the shaft.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A coupling for connecting a driving shaft (1) and a driven shaft (2), characterized in that: include: A first clamping ring (3), the first clamping ring (3) being used for clamping with the driving shaft (1); A second clamping ring (4), the second clamping ring (4) being used for clamping with the driven shaft (2); A support shaft (5), the support shaft (5) being connected between the first snap ring (3) and the second snap ring (4), and the two ends of the support shaft (5) being slidably connected to the first snap ring (3) and the second snap ring (4) along the axis direction thereof, and when the first snap ring (3) rotates following the driving shaft (1), the first snap ring (3) can drive the second snap ring (4) to rotate via the support shaft (5); The support shaft (5) comprises an outer ring (501) and an inner ring (502); the outer ring (501) is rotatably sleeved on the outside of the inner ring (502); the outer ring (501) is clamped with a first clamping ring (3); and the inner ring (502) is clamped with a second clamping ring (4); A plurality of first inner grooves (503) and second inner grooves (507) are provided on the inner wall of the outer ring (501), the first inner grooves (503) and the second inner grooves (507) are evenly spaced, and the first inner grooves (503) and the second inner grooves (507) are connected via an elastic element; The elastic element comprises a protrusion (504) arranged in the first inner groove (503) and fixed to the inner ring (502); two buffer plates (505) are slidably mounted inside the second inner groove (507); a buffer spring (506) is connected between the two buffer plates (505); a connecting groove is connected between adjacent first inner grooves (503) and second inner grooves (507); the protrusion (504) and the buffer plates (505) in adjacent second inner grooves (507) are connected via a connecting plate (508); The first clamping ring (3) comprises two first clamping bodies (301), the inner walls of the first clamping bodies (301) are each provided with a first clamping strip, and the outer surface of the outer ring (501) is provided with a groove adapted to the first clamping strip; The second clamping ring (4) comprises two second clamping bodies (401), a clamping sleeve (402) is fixed to the end of the second clamping body (401), and a groove matching the clamping sleeve (402) is provided on the inner ring (502).

2. A coupling according to claim 1, characterized in that: The two first card bodies (301) are fixed by bolts, and the two second card bodies (401) are also fixed by bolts.

3. A coupling according to claim 1, characterized in that: The driving shaft (1) and the driven shaft (2) are both provided with keyways, and splines (6) are fixed inside the keyways. A slide groove adapted to the splines (6) on the driving shaft (1) is provided inside one of the first card bodies (301), and a slide groove adapted to the splines (6) on the driven shaft (2) is provided inside one of the second card bodies (401). Any of the first card bodies (301) and the second card bodies (401) are respectively connected to the driving shaft (1) and the driven shaft (2) by bolts.

4. A coupling according to claim 1, characterized in that: A second clamping strip is provided on the outer wall of the clamping sleeve (402), the first clamping strip and the second clamping strip are both arc strips, and the grooves are both arc-shaped grooves.

5. A coupling according to claim 1, characterized in that: The first inner groove (503) and the second inner groove (507) are both arc-shaped grooves, and the connection between the protrusion (504) and the buffer plate (505) and the arc-shaped grooves are both arc-surface connections.

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