Coupling and transmission device comprising same

Abstract

The utility model provides a coupler and a transmission device comprising the coupler. The coupler comprises an outer ring assembly, a first ring assembly and a second ring assembly, the inner ring assembly is used for being connected with a second shaft, and at least one part of the inner ring assembly is arranged in the outer ring assembly. The inner ring assembly includes: an inner ring including a central through hole for receiving a second shaft; a blade pivotally mounted in the inner ring; the corrugated pipe air bin is connected between the inner ring and the blade, the corrugated pipe air bin is configured to enable the blade to be switched between a first position and a second position along with the change of the environment temperature, the blade does not make contact with the outer ring assembly at the first position so that the coupler can be disconnected, and the blade abuts against the outer ring assembly at the second position so that the coupler can be disconnected. Therefore, the coupler is closed. The coupler can be automatically opened and closed along with the environment temperature.

Description

Technical Field

[0001] The utility model relates to a coupling, and more particularly to a coupling that automatically opens and closes with temperature change and a transmission device including the coupling. Background Art

[0002] The housing of a transmission device (such as a gearbox) usually contains oil for cooling and lubrication. During the operation of the transmission device, this oil is pumped to a cooling system by means of a flange pump, where it is cooled and then returned to the housing. The flange pump is usually driven by the input shaft of the transmission device.

[0003] In current transmission devices, the shaft of the flange pump is rigidly connected to the input shaft of the transmission device, as Figure 1 shown. In Figure 1 , the shaft 1' of the flange pump is rigidly connected to the input shaft 2' of the transmission device by a pin shaft 3'. In this case, as long as the input shaft 2' of the transmission device rotates, it will inevitably drive the flange pump to operate, thereby cooling the oil. In some areas with large temperature differences between winter and summer, the transmission device is equipped with both high-power heating rods for heating the oil and a cooling system driven by a flange pump for cooling the oil. When the temperature is low in winter, the transmission device does not need to dissipate heat through the cooling system. However, since the input shaft of the transmission device is rigidly connected to the flange pump, the flange pump will inevitably be driven to operate after the transmission device starts. As a result, the flange pump sends the oil into the cooling system, and the temperature of the oil decreases after passing through the cooling system. In order to reach the operating temperature of the transmission device (for example, to avoid the lubricating oil failing due to too low temperature), the above-mentioned heating rods need to continuously heat, thus causing unnecessary energy waste.

[0004] It is precisely in the above background that the coupling of the present utility model that automatically opens and closes with temperature change is designed. Summary of the Utility Model

[0005] The coupling proposed by the present utility model can automatically open and close according to the ambient temperature. Specifically, the coupling closes at a higher ambient temperature to achieve transmission between two shafts, and disconnects at a lower ambient temperature to block the transmission between the two shafts. When the coupling according to the present utility model is used to connect the input shaft of a transmission device and the shaft of a flange pump, on the one hand, it can close at a higher ambient temperature to enable the input shaft of the transmission device to drive the flange pump to operate, thereby sending the oil to the cooling system for cooling; on the other hand, it can disconnect at a lower ambient temperature to avoid starting the flange pump. Thus, the oil can not be cooled, and therefore the heating rods do not have to work all the time to raise the oil temperature, which can reduce energy consumption and waste.

[0006] Specifically, the present utility model proposes a coupling, which includes: an outer ring assembly for connecting a first shaft; and an inner ring assembly for connecting a second shaft, and at least a part of the inner ring assembly is disposed within the outer ring assembly. Wherein, the inner ring assembly includes: an inner ring having a central through hole for receiving the second shaft; blades pivotally mounted within the inner ring; and a bellows air chamber connected between the inner ring and the blades, the bellows air chamber being configured to cause the blades to switch between a first position and a second position as the ambient temperature changes. At the first position, the blades do not contact the outer ring assembly, thereby disconnecting the coupling, and at the second position, the blades abut against the outer ring assembly, thereby closing the coupling.

[0007] In one embodiment, the bellows air chamber is filled with a gas, and the pressure of the gas when the ambient temperature is lower than a first threshold is less than the spring force of the bellows air chamber, such that the blades connected to the bellows air chamber are in the first position; and the pressure of the gas when the ambient temperature is higher than a second threshold is greater than the spring force of the bellows air chamber, such that the blades connected to the bellows air chamber are in the second position, wherein the second threshold is greater than the first threshold.

[0008] In one embodiment, the first threshold is 20 °C and the second threshold is 30 °C.

[0009] In one embodiment, the gas includes methyl chloride, chloroethane, acetone, diethyl ether, or any combination thereof.

[0010] In one embodiment, the inner ring assembly further includes: a first fixed end cover and a second fixed end cover disposed on opposite sides of the inner ring; and a pivot shaft fixedly installed on the first fixed end cover and the second fixed end cover through the inner ring, wherein the blades are pivotally mounted on the pivot shaft.

[0011] In one embodiment, the cross-section of the blade includes a tip, a root end, and an intermediate portion located between the tip and the root end. The root end is connected to the bellows air chamber, the pivot shaft passes through the intermediate portion, the tip is a free end, and is configured to abut against the outer ring assembly at the second position.

[0012] In one embodiment, the size of the intermediate portion of the blade is greater than the size at the tip and the root end. The intermediate portion is formed as a circle centered on the pivot shaft and is configured to abut against the inner ring.

[0013] In one embodiment, the inner ring assembly further includes a fixed bracket. One end of the corrugated air chamber is fixed to the blade, the other end is fixed to the fixed bracket, and the fixed bracket is fixedly installed on the inner ring.

[0014] In one embodiment, the corrugated air chamber is in the shape of a closed slender cylinder.

[0015] In one embodiment, the outer ring assembly includes: a half coupling, the half coupling includes a central through hole for receiving the first shaft; and an outer ring fixedly connected to the half coupling, wherein the half coupling and the outer ring jointly define a space for accommodating at least a part of the inner ring assembly.

[0016] The present utility model also proposes a transmission device, the transmission device includes an input shaft, a flange pump driven by the input shaft, and a cooling system, wherein the flange pump is configured to transport the oil in the transmission device through the cooling system for cooling, and the input shaft of the transmission device and the flange pump are connected by the above-mentioned coupling.

[0017] In one embodiment, the input shaft of the transmission device is connected to the outer ring assembly of the coupling, and the flange pump is connected to the inner ring assembly of the coupling.

[0018] Generally speaking, the various embodiments of the present utility model can be combined and coupled in any possible way within the scope of the present utility model. These and other aspects, features and / or advantages of the present utility model will be apparent and elucidated with reference to the embodiments described below. Description of the Drawings

[0019] Embodiments of the present utility model will be described by way of example with reference to the following drawings, in which:

[0020] Figure 1 A part of a prior art transmission device is shown, in which the input shaft of the transmission device is rigidly connected to the shaft of the flange pump;

[0021] Figure 2 A cross-sectional view of a coupling according to an embodiment of the present utility model is shown;

[0022] Figure 3 An exploded view of a coupling according to an embodiment of the present utility model is shown;

[0023] Figure 4 A cross-sectional view of a coupling according to an embodiment of the present utility model in a low-temperature environment is shown;

[0024] Figure 5 is Figure 4 an enlarged view of the circled part A in

[0025] Figure 6 shows a cross-sectional view of a coupling according to an embodiment of the present invention in a high-temperature environment; and

[0026] Figure 7 is Figure 6 an enlarged view of the circled portion B in

[0027] It should be understood that the drawings only show one way of implementing the present invention and should not be construed as a limitation on other possible embodiments falling within the scope of the appended claims. The protection scope of the present invention is only defined by the appended claims. Detailed Description of the Specific Embodiment

[0028] will be further described in detail with reference to Figures 2 - 7 a coupling according to an embodiment of the present invention. Figure 2 shows a cross-sectional view of a coupling according to an embodiment of the present invention, and Figure 3 shows an exploded view of a coupling according to an embodiment of the present invention.

[0029] As Figure 2 and Figure 3 shown, the coupling 1 is generally in the shape of a circular cylinder and includes an outer ring assembly 10 and an inner ring assembly 20. At least a part of the inner ring assembly 20 is disposed within the outer ring assembly 10. In particular, substantially all of the inner ring assembly 20 is disposed within the outer ring assembly 10. The outer ring assembly 10 is used to connect to a first shaft (not shown in the figure), for example, by a flat key to the first shaft. The inner ring assembly 20 is used to connect to a second shaft (also not shown in the figure), for example, also by a flat key to the second shaft. Thus, the coupling 1 can achieve the transmission of rotational motion between the first shaft and the second shaft when needed.

[0030] The outer ring assembly 10 includes a half coupling 11 and an outer ring 12. The half coupling 11 and the outer ring 12 are fixed together by fastening bolts 13. The half coupling 11 includes two coaxially arranged circular cylindrical parts, namely a first circular cylindrical part 11a and a second circular cylindrical part 11b. The outer diameter of the first circular cylindrical part 11a is smaller than that of the second circular cylindrical part 11b, and the inner diameter of the first circular cylindrical part 11a is equal to the inner diameter of the second circular cylindrical part 11b, thus jointly forming a central through hole penetrating the half coupling 11. This through hole is used to receive the above-mentioned first shaft. In particular, this through hole further includes a groove radially opened outward, and this groove is used to accommodate a key. Through this key, rotational fixation between the half coupling 11 and the first shaft can be achieved. The outer ring 12 is integrally in the shape of a circular cylinder, and a plurality of through holes in the axial direction are provided along the circumference of the circle. A plurality of corresponding threaded holes are provided on the second circular cylindrical part 11b of the half coupling 11. A plurality of fastening bolts 13 are inserted from the through holes on the outer ring 12 and screwed into the corresponding threaded holes on the half coupling 11, thereby realizing the fixed connection between the outer ring 12 and the half coupling 11. Generally, the outer diameter of the outer ring 12 is equal to the outer diameter of the second circular cylindrical part 11b of the half coupling 11, so that in the assembled state, the outer surface of the outer ring 12 is flush with the outer surface of the second circular cylindrical part 11b. In addition, the inner diameter of the outer ring 12 is larger than the inner diameter of the second circular cylindrical part 11b, so that in the assembled state, the outer ring 12 and the half coupling 11 jointly define a cylindrical space for accommodating the above-mentioned inner ring assembly 20.

[0031] Still referring to Figure 2 and Figure 3 , the inner ring assembly 20 includes an inner ring 21, a plurality of blades 22, a plurality of pivots 23, a first fixed end cover 24 and a second fixed end cover 25, a plurality of bellows air chambers 26, a plurality of fixed brackets 27, etc. The inner ring 21 is integrally in the shape of a circular cylinder, and grooves for accommodating the blades 22, pivots 23, bellows air chambers 26, fixed brackets 27, etc. are provided in the cylinder body. The central through hole of the inner ring 21 is used to accommodate the above-mentioned second shaft. Similarly to the half coupling 11, the central through hole of the inner ring 21 can also include a groove radially opened outward, and this groove is used to accommodate a key. Through this key, rotational fixation between the inner ring 21 and the second shaft can be achieved.

[0032] The first fixed end cover 24 and the second fixed end cover 25 are respectively fixedly installed on opposite sides of the inner ring 21 by fasteners. The fasteners can be a plurality of bolts 28 passing through the first fixed end cover 24, the inner ring 21, and the second fixed end cover 25. The outer diameters of the first fixed end cover 24 and the second fixed end cover 25 are equal to the outer diameter of the inner ring 21, such that in the assembled state, the outer surfaces of the first fixed end cover 24 and the second fixed end cover 25 are flush with the outer surface of the inner ring 21. Additionally, the inner diameters of the first fixed end cover 24 and the second fixed end cover 25 are slightly larger than the inner diameter of the inner ring 21, such that in the assembled state, the central through-hole of the inner ring 21 and the above-mentioned radially outward groove for accommodating the key are exposed.

[0033] A plurality of pivots 23 are fixedly installed between the first fixed end cover 24 and the second fixed end cover 25 through the inner ring 21. The blades 22 are pivotally mounted on the pivots 23 and are substantially located in the grooves formed in the inner ring 21. As Figures 4 - 7 shown, the cross-section of the blade 22 is generally in the shape of an airfoil, which includes a tip 22a, a root end 22b, and an intermediate portion 22c located between the tip 22a and the root end 22b (refer to Figures 4 - 7 ). The airfoil shape extends along the longitudinal direction (i.e., the axial direction of the pivot 23) to form the three-dimensional shape of the blade 22. The size of the blade 22 at the intermediate portion 22c is slightly larger than the sizes at the tip 22a and the root end 22b to enhance the strength of the blade at the intermediate portion 22c. The pivot 23 generally passes through the intermediate portion 22c of the blade. In a preferred embodiment, the intermediate portion 22c of the blade 22 is formed as a circle centered on the pivot 23, and the intermediate portion 22c can abut against the inner ring 21. Thus, during the rotation of the blade 22 around the pivot 23, the circular intermediate portion 22c can remain in contact with the inner ring 21. The root end 22b of the blade 22 is connected to the bellows air chamber 26, and the tip 22a is a free end. Thus, the blade 22 can pivot around the pivot 23 as the bellows air chamber 26 expands and contracts, which will be described in further detail below.

[0034] The structures of the outer ring assembly 10 and the inner ring assembly 20 have been described in detail above. Those skilled in the art will understand that the above structures are illustrative only, and the present invention is not limited to the above specific embodiments. For example, the half-coupling 11 of the outer ring assembly 10 can be integrally in the shape of a circular cylinder without including the first circular cylinder portion 11a and the second circular cylinder portion 11b. Again, for example, the blades 22 of the inner ring assembly 20 can also adopt other shapes.

[0035] The bellows air chamber 26 is in the shape of a slender cylinder. One end of it is connected to the root end 22b of the blade 22, and the other end is fixed to the inner ring 21 through a fixing bracket 27. Specifically, one end of the bellows air chamber 26 is fixedly connected to a circular counterbore formed in the root end 22b of the blade 22, and the other end is fixedly connected to a circular counterbore formed in the fixing plate 27a of the fixing bracket 27. The fixing bracket 27 further includes a first fixing member 27b and a second fixing member 27c. The fixing plate 27a is fixedly mounted on the inner ring 21 through the first fixing member 27b and the second fixing member 27c. The above-mentioned first fixing member 27b and second fixing member 27c can be screws, rivets, pins, etc.

[0036] Those skilled in the art will understand that a bellows refers to a tubular elastic element formed by connecting foldable corrugated sheets along the folding and telescoping direction, and thus has a certain elastic force that makes it tend to return to its original shape. In an embodiment according to the present invention, the bellows air chamber 26 is a closed bellows filled with a certain gas inside. This gas is in a wet vapor state at a lower temperature (below 20 - 30 °C), and the pressure is less than the spring force of the bellows air chamber. Therefore, the bellows air chamber 26 maintains its original length. The original length of the bellows air chamber 26 can be configured such that the blade 22 connected to the bellows air chamber 26 in its original length is in a first position. In this first position, a certain gap is maintained between the tip 22a of the blade 22 and the inner wall of the outer ring 12, that is, the blade 22 is separated from the outer ring 12, making the coupling 1 in an open state. Thus, the rotation of the outer ring assembly 10 is not transmitted to the inner ring assembly 20. The above-mentioned gas is in a superheated vapor state at a higher temperature (above 20 - 30 °C), and the pressure is greater than the spring force of the bellows air chamber 26. Therefore, the gas pressure overcomes the spring force of the bellows air chamber 26 to cause the bellows air chamber 26 to elongate, thereby driving the blade 22 to pivot in the same direction as the outer ring 12. Eventually, the blade 22 reaches a second position. In this second position, the tip 22a of the blade 22 pivots outside the range covered by the inner ring 21 and abuts against the inner wall of the outer ring 12, that is, the blade 22 is in contact with the outer ring 12, making the coupling 1 in a closed state. In addition, in this second position, a part of the blade 22, preferably the middle part 22c of the blade 22 abuts against the inner ring 21 to prevent the blade 22 from further pivoting relative to the inner ring 21 in the same direction as the outer ring 12 under the action of frictional force (resulting from the relative movement tendency between the blade 22 and the outer ring 12). This improves the stability of the blade 22 in the second position.

[0037] As can be seen from the above, the pressure of the gas in the bellows air chamber 26 is less than the spring force of the bellows air chamber 26 when the ambient temperature is lower than the first threshold, causing the vane 22 connected to the bellows air chamber 26 to be in the above-mentioned first position; and the pressure of the gas in the bellows air chamber 26 is greater than the spring force of the bellows air chamber 26 when the ambient temperature is higher than the second threshold, causing the vane 22 connected to the bellows air chamber 26 to be in the above-mentioned second position. The second threshold is greater than the first threshold. In a preferred embodiment, the second threshold can be 30 °C, and the first threshold can be 20 °C.

[0038] The gas in the above-mentioned bellows air chamber 26 can be methyl chloride, chloroethane, acetone, diethyl ether, etc., or any combination thereof. However, those skilled in the art will understand that the gas can be any other suitable type of gas.

[0039] The following will refer to Figures 4 - 7 Describe in detail the working process of the above coupling. Figure 4 Fig. shows a cross-sectional view of the coupling according to an embodiment of the present invention in a low-temperature environment; Figure 5 is Figure 4 An enlarged view of the circled part A in Figure 6 Fig. shows a cross-sectional view of the coupling according to an embodiment of the present invention in a high-temperature environment; and Figure 7 is Figure 6 An enlarged view of the circled part B in

[0040] In a low-temperature environment, the gas in the bellows air chamber 26 is in a wet vapor state, and the gas pressure is less than the elastic force of the bellows air chamber 26. Therefore, the bellows air chamber 26 maintains its original length, causing the vane 22 connected to the bellows air chamber 26 to be in the first position, as shown in Figure 4 and Figure 5 shown. In this first position, the tip 22a of the vane 22 is separated from the inner wall of the outer ring 12, causing the coupling 1 to be in an open state. As the ambient temperature gradually rises, the wet vapor in the bellows air chamber 26 gradually vaporizes, and the gas pressure continuously increases. When the gas pressure increases to exceed the spring force of the bellows air chamber 26, the bellows air chamber 26 will elongate under the action of the gas pressure, thereby driving the vane 22 to pivot in the same direction as the outer ring 12, and finally causing the vane 22 to reach the second position, as shown in Figure 6 and Figure 7As shown. In this second position, the tip 22a of the blade 22 is in frictional contact with the inner wall of the outer ring 12, causing the coupling 1 to be in a closed state. Subsequently, when the ambient temperature gradually decreases, the gas pressure in the bellows air chamber 26 also decreases accordingly. When the gas pressure drops below the spring force of the bellows air chamber 26, the bellows air chamber 26 will shorten to its original length under the action of the spring force, thereby driving the blade 22 to pivot in the direction opposite to the outer ring 12, and finally causing the blade 22 to return to the first position, making the coupling 1 return to the disconnected state again.

[0041] The above-mentioned coupling can be automatically opened and closed according to the ambient temperature. Specifically, the coupling is closed when the ambient temperature is high to realize the transmission between the first shaft and the second shaft, and is disconnected when the ambient temperature is low to block the transmission between the first shaft and the second shaft.

[0042] Those skilled in the art will understand that the coupling according to the present invention can be applied to various scenarios. For example, the coupling can be used to connect between the input shaft (i.e., the first shaft) of the transmission device and the shaft of the flange pump (i.e., the second shaft). When the ambient temperature is low, the connection between the two shafts is disconnected to avoid cooling the oil, thereby avoiding energy waste; and when the ambient temperature is high, the connection between the two shafts is closed to realize the cooling of the oil.

[0043] Therefore, in another embodiment according to the present invention, a transmission device including the above-mentioned coupling is proposed. The transmission device can be a gearbox or a reduction box, etc.

[0044] The transmission device includes a housing, a transmission mechanism installed in the housing, oil for lubricating and cooling the transmission mechanism, a cooling system for cooling the oil, and a flange pump for delivering the oil through the cooling system. The transmission mechanism includes a transmission shaft and gears installed on the transmission shaft, etc. The transmission shaft generally includes an input shaft, an output shaft, and an intermediate shaft, and the gears generally include spur gears, helical gears, bevel gears, etc., depending on the specific configuration of the transmission mechanism. The flange pump is driven by the transmission shaft of the transmission mechanism, preferably by the input shaft. Among them, the transmission device also includes the above-mentioned coupling. The coupling is connected between the input shaft of the transmission mechanism and the shaft of the flange pump, and is used to transmit the rotational motion of the input shaft to the shaft of the flange pump when needed, thereby driving the flange pump to operate.

[0045] Furthermore, the outer ring assembly 10 of the above-mentioned coupling 1 is used to connect the input shaft of the transmission device, and the inner ring assembly 20 is used to connect the shaft of the flange pump. The coupling can be closed when the ambient temperature is high so that the input shaft of the transmission device drives the flange pump to operate, thereby delivering the oil to the cooling system for cooling. The coupling can also be disconnected when the ambient temperature is low to avoid starting the flange pump. Thus, the oil can not be cooled, and therefore the heating rod does not have to work all the time to raise the oil temperature, which can reduce energy consumption and waste.

[0046] Although the present utility model has been described in connection with the above specific embodiments, it should not be construed as being limited in any way to the examples presented. The scope of the present utility model is defined by the appended claims. In the context of the claims, the term "comprising" or "including" does not exclude other possible elements or steps. Additionally, references to such as "a" or "an" should not be construed as excluding a plurality. The use of reference signs in the claims for elements shown in the drawings should also not be construed as limiting the scope of the present utility model. Furthermore, the various features mentioned in different claims may be advantageously combined, and the mention of these features in different claims does not exclude the combination of these features being possible and advantageous. In addition, the "first", "second", etc. used in the present utility model are only used to distinguish related components from each other, and are not intended to confer any priority-related attributes on them.

Claims

1. A coupling (1), characterized in that: The coupling (1) comprises: An outer ring assembly (10), the outer ring assembly (10) being used to connect to a first shaft; and an inner ring assembly (20), the inner ring assembly (20) being used for connecting to a second shaft, and at least a portion of the inner ring assembly (20) being disposed within the outer ring assembly (10), Wherein, the inner ring assembly (20) comprises: an inner ring (21), the inner ring (21) comprising a central through hole for receiving the second shaft; a blade (22) pivotably mounted in the inner ring (21); and A bellows air chamber (26) is connected between the inner ring (21) and the blade (22), and the bellows air chamber (26) is configured to switch the blade (22) between a first position and a second position as the ambient temperature changes. In the first position, the blade (22) is not in contact with the outer ring assembly (10), thereby disconnecting the coupling (1); and in the second position, the blade (22) abuts against the outer ring assembly (10), thereby closing the coupling (1).

2. The coupling (1) according to claim 1, characterized in that: The bellows gas chamber (26) is filled with gas, and the pressure of the gas when the ambient temperature is lower than a first threshold value is less than the spring force of the bellows gas chamber (26), so that the blade (22) connected to the bellows gas chamber (26) is in the first position; and the pressure of the gas when the ambient temperature is higher than a second threshold value is greater than the spring force of the bellows gas chamber (26), so that the blade connected to the bellows gas chamber (26) is in the second position, wherein the second threshold value is greater than the first threshold value.

3. The coupling (1) according to claim 2, characterized in that: The first threshold is 20°C, and the second threshold is 30°C.

4. The coupling (1) according to claim 2, characterized in that: The gas includes methyl chloride, ethyl chloride, acetone, diethyl ether or any combination thereof.

5. The coupling (1) according to claim 1, characterized in that: The inner ring assembly (20) further comprises: A first fixed end cover (24) and a second fixed end cover (25) are arranged on opposite sides of the inner ring (21); and a pivot (23) passing through the inner ring (21) and fixedly mounted on the first fixed end cover (24) and the second fixed end cover (25), Wherein, the blade (22) is pivotally mounted on the pivot (23).

6. The coupling (1) according to claim 5, characterized in that The cross section of the blade (22) includes a tip end (22a), a root end (22b) and a middle portion (22c) located between the tip end (22a) and the root end (22b), wherein the root end (22b) is connected to the bellows air chamber (26), the pivot (23) passes through the middle portion (22c), and the tip end (22a) is a free end and is configured to abut against the outer ring assembly (10) at the second position.

7. The coupling (1) according to claim 6, characterized in that The blade (22) has a larger size at the middle portion (22c) than at the tip end (22a) and the root end (22b), and the middle portion (22c) is formed into a circle with the pivot (23) as the center and is configured to be disposed against the inner ring (21).

8. The coupling (1) according to claim 1, characterized in that: The inner ring assembly (20) further comprises a fixing bracket (27), one end of the bellows air chamber (26) is fixed on the blade (22), and the other end is fixed on the fixing bracket (27), and the fixing bracket (27) is fixedly mounted on the inner ring (21).

9. The coupling (1) according to claim 1, characterized in that: The bellows air chamber (26) is in the shape of a closed elongated cylinder.

10. The coupling (1) according to claim 1, characterized in that The outer ring assembly (10) comprises: a half coupling (11), the half coupling (11) comprising a central through hole for receiving the first shaft; and an outer ring (12) fixedly connected to the half coupling (11), The half coupling (11) and the outer ring (12) jointly define a space for accommodating at least a portion of the inner ring assembly (20).

11. A transmission device, comprising: Input shaft; a flange pump driven by the input shaft; and A cooling system, wherein the flange pump is configured to convey the oil in the transmission device through the cooling system for cooling, It is characterized in that the input shaft of the transmission device and the flange pump are connected via a coupling (1) according to any one of claims 1-10.

12. The transmission device according to claim 11, characterized in that: The input shaft of the transmission is connected to the outer ring assembly (10) of the coupling (1), and the flange pump is connected to the inner ring assembly (20) of the coupling (1).

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