Flexible coupling

Abstract

The utility model discloses a flexible coupling, belongs to the technical field of couplings, and solves the problem that an existing coupling is easy to break and damage. The flexible coupling comprises a first connecting disc and a second connecting disc, connecting sleeves are arranged on the first connecting disc and the second connecting disc, a plurality of connecting belts of arc-shaped structures are arranged between the first connecting disc and the second connecting disc, and fastening plates used for pressing the connecting belts are arranged at the two ends of each connecting belt. The fastening plates on the two sides are connected with the first connecting disc and the second connecting disc through a plurality of locking bolts correspondingly, supporting air bags are arranged in the multiple connecting belts, the outer rings of the supporting air bags are attached to the connecting belts, and an inflating assembly communicating with the supporting air bags is arranged on one connecting sleeve. The flexible coupling has good deformation resistance, stability is improved, it is guaranteed that a test is conducted smoothly, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a flexible coupling. Background Art

[0002] During the performance test of an engine, it is necessary to test the power of the engine. In the process of testing the engine power, it is inevitable to involve the problem of docking the output shaft of the engine with the input shaft of the dynamometer. Usually, a coupling is used for connection. Due to possible deviations during the installation process, the output shaft and the input shaft may be misaligned, which may easily lead to the phenomenon of shaft breakage. In order to solve the problem of misalignment during the connection of the power output device and the load device, a flexible coupling has emerged on the market.

[0003] After retrieval, the publication number is CN201461768U - canvas belt flexible coupling. In this scheme, two large flange plates of the same size are disclosed. Four canvas belts are symmetrically fixed between the two large flange plates. Each canvas belt is uniformly distributed and fixed on the outer ring of the large flange plate through a pressing plate and bolts; a small flange plate with a connecting shaft is fixed on the inner ring of the outer side of each large flange plate through bolts, which are respectively used to connect the output shaft of the prime mover and the input shaft of the follower. Although the coupling of this scheme can solve the problem of misalignment, in the actual use process, when the torque is too large, due to the lack of a support structure in the middle, the canvas belt is severely deformed under force, which is likely to cause fracture and shaft breakage phenomena, affecting the service life of the coupling and the test process at the same time. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a flexible coupling aiming at the above - mentioned deficiencies of the prior art. The flexible coupling has good anti - deformation ability, improves stability, ensures the smooth progress of the test, extends the service life, and has the characteristics of wide application range and strong practicability.

[0005] The technical scheme adopted by the utility model is as follows: a flexible coupling includes a first connection disk and a second connection disk. Connection sleeves are provided on both the first connection disk and the second connection disk. A plurality of arc - shaped connection belts are arranged between the first connection disk and the second connection disk. Fastening plates for pressing the connection belts are provided at both ends of the connection belts. The fastening plates on both sides are respectively connected to the first connection disk and the second connection disk through a plurality of locking bolts. A support airbag is arranged inside the plurality of connection belts. The outer ring of the support airbag is in fit with the connection belt. An air - injection assembly communicated with the support airbag is provided on one of the connection sleeves.

[0006] As a further improvement, the air inflation component includes a nozzle and a connecting pipe. An air inlet passage is formed on the connecting sleeve. The nozzle is installed on the connecting sleeve and connected to the air inlet passage. One end of the connecting pipe communicates with the air inlet passage, and the other end communicates with the support airbag.

[0007] Further, an installation groove is provided on the inner side of the connecting belt, and the support airbag is installed in the installation groove.

[0008] Further, support frames are provided on both of the fastening plates. The support frames on both sides are symmetrically arranged, and the middle positions of the support frames are in contact with the support airbag.

[0009] Further, the number of the connecting belts is four, and the four connecting belts are evenly arranged on the first connecting disk and the second connecting disk.

[0010] Further, a tapered hole is provided in the connecting sleeve on the second connecting disk.

[0011] Further, the number of the locking bolts is eight, and the locking bolts are evenly arranged on the first connecting disk and the second connecting disk.

[0012] Beneficial effects

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] For a flexible coupling of the present utility model, a plurality of connecting belts are provided between the first connecting disk and the second connecting disk and fixed by the fastening plates. The engine output shaft and the dynamometer input shaft can be connected through the connecting sleeve. During the transmission process, the connecting belts play a role of flexible connection, reducing vibration and impact, prolonging the service life of the dynamometer, and at the same time compensating for the deviation between the engine output shaft and the dynamometer input shaft to ensure the normal operation of the equipment. During the rotation process, the middle part inside the connecting belts is supported by the support airbag, effectively preventing the connecting belts from deforming inward and preventing the connecting belts from breaking due to excessive deformation, effectively prolonging the service life and ensuring the smooth progress of the test. The support airbag can also play a buffering role, thereby reducing the influence brought by vibration. The supporting role played by the support airbag makes the overall structure more stable, effectively improving the stability, and has the characteristics of strong practicability and wide application range. Description of the drawings

[0015] Figure 1 It is the front view structural schematic diagram of the present utility model.

[0016] Wherein: 1 - support base, 2 - sleeve, 3 - telescopic rod, 4 - locking screw, 5 - limiting plate, 6 - support shaft, 7 - rotating disc, 8 - stud, 9 - locking nut, 10 - annular groove, 11 - bolt hole, 12 - universal joint, 13 - pressing plate, 14 - pressing teeth. Detailed implementation manner

[0017] The following further describes the present utility model with reference to specific embodiments in the accompanying drawings.

[0018] Refer to Figure 1 As shown, a flexible coupling of the present utility model includes a first connection disc 1 and a second connection disc 2. Connection sleeves 4 are provided on both the first connection disc 1 and the second connection disc 2. A plurality of connecting belts 5 with an arc-shaped structure are provided between the first connection disc 1 and the second connection disc 2. Fastening plates 8 for pressing the connecting belts 5 are provided at both ends of the connecting belts 5. The two fastening plates 8 are respectively connected to the first connection disc 1 and the second connection disc 2 through a plurality of locking bolts 9. A support airbag 6 is provided inside the plurality of connecting belts 5. The outer ring of the support airbag 6 is in contact with the connecting belt 5. An air injection assembly 3 communicating with the support airbag 6 is provided on one of the connection sleeves 4. During use, the engine output shaft and the dynamometer input shaft are connected through the connection sleeves 4 on both sides, and then gas is injected into the support airbag 6 through the air nozzle 31, so that it can expand and play a supporting role inside the connecting belt 5. During the transmission process, the connecting belt 5 plays a role of flexible connection, reducing vibration and impact, prolonging the service life of the dynamometer, and at the same time compensating for the deviation between the engine output shaft and the dynamometer input shaft to ensure the normal operation of the equipment. During rotation, the middle part inside the connecting belt 5 is supported by the support airbag 6, effectively preventing the connecting belt 5 from deforming inward and preventing the connecting belt 5 from deforming too much and breaking, effectively prolonging the service life and ensuring the smooth progress of the test. The support airbag 6 can also play a buffering role, thereby reducing the influence brought by vibration. The supporting role played by the support airbag 6 makes the overall structure more stable and effectively improves the stability.

[0019] Specifically, the air injection assembly 3 includes an air nozzle 31 and a connecting pipe 33. An air inlet channel 32 is opened on the connection sleeve 4. The air nozzle 31 is installed on the connection sleeve 4 and connected to the air inlet channel 32. One end of the connecting pipe 33 is communicated with the air inlet channel 32, and the other end is communicated with the support airbag 6. Air is injected into the air inlet channel 32 through the air nozzle 31, and the gas flows into the connecting pipe 33 and enters the support airbag 6 through the connecting pipe 33, thereby realizing the inflation of the support airbag 6. Different volumes of gas can be filled according to actual situations, so as to control the softness and hardness of the support airbag 6 to meet the usage requirements of multiple scenarios.

[0020] Preferably, an installation groove body 7 is provided inside the connecting belt 5, and the supporting airbag 6 is installed in the installation groove body 7 to limit and support the supporting airbag 6, so that the supporting airbag 6 is always located at the middle position of the arc-shaped connecting belt 5, which can play a better supporting role.

[0021] Furthermore, support frames 10 are provided on both fastening plates 8. The two support frames 10 are symmetrically arranged. The support frames 10 are in contact with the middle position of the supporting airbag 6 to position the supporting airbag 6 and prevent the supporting airbag 6 from toppling when deflated, thus losing its effect.

[0022] Furthermore, the number of connecting belts 5 is four, and the four connecting belts are evenly arranged on the first connecting disk 1 and the second connecting disk 2, so that during transmission, the force is more evenly distributed and the transmission effect is better.

[0023] Furthermore, a tapered hole 11 is provided in the connecting sleeve 4 on the second connecting disk 2. By setting the taper, a tighter fit can be formed between the shaft and the sleeve, reducing the clearance between moving parts, thereby improving the overall performance and accuracy of the machine. At the same time, the usage range is expanded, and it is easier to install when there is a deviation between the two shafts.

[0024] Furthermore, the number of locking bolts 9 is eight, and the locking bolts 9 are evenly arranged on the first connecting disk 1 and the second connecting disk 2, making the connection of the connecting belt 5 more uniform and reliable, and preventing the connecting belt 5 from loosening.

[0025] When a flexible coupling of this embodiment is in use, the output shaft of the engine is connected to the input shaft of the dynamometer through the connecting sleeves 4 on both sides. Then, gas is injected into the supporting airbag 6 through the air nozzle 31 so that it can expand and play a supporting role inside the connecting belt 5. During the transmission process, the connecting belt 5 plays a role of flexible connection, reducing vibration and impact, extending the service life of the dynamometer, and at the same time compensating for the deviation between the output shaft of the engine and the input shaft of the dynamometer to ensure the normal operation of the equipment. During the rotation process, the middle part inside the connecting belt 5 is supported by the supporting airbag 6, effectively preventing the connecting belt 5 from deforming inward and preventing the connecting belt 5 from deforming too much and breaking, effectively extending the service life and ensuring the smooth progress of the test. The supporting airbag 6 can also play a buffering role, thereby reducing the influence brought by vibration. The supporting role of the supporting airbag 6 makes the overall structure more stable and effectively improves the stability. A flexible coupling of the present utility model has good anti-deformation ability, improves stability, ensures the smooth progress of the test, extends the service life, and has the characteristics of wide application range and strong practicability.

[0026] The above are only the preferred embodiments of the present utility model. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several modifications and improvements can be made, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A flexible coupling, characterized in that: It comprises a first connecting plate (1) and a second connecting plate (2), wherein the first connecting plate (1) and the second connecting plate (2) are both provided with a connecting sleeve (4), a plurality of connecting belts (5) with an arc structure are provided between the first connecting plate (1) and the second connecting plate (2), a fastening plate (8) for pressing the connecting belt (5) is provided at both ends of the connecting belt (5), the fastening plates (8) on both sides are respectively connected to the first connecting plate (1) and the second connecting plate (2) through a plurality of locking bolts (9), a supporting airbag (6) is provided inside the plurality of connecting belts (5), the outer ring of the supporting airbag (6) is in contact with the connecting belt (5), and an inflation component (3) connected to the supporting airbag (6) is provided on one of the connecting sleeves (4).

2. A flexible coupling according to claim 1, characterized in that: The inflation assembly (3) comprises an air nozzle (31) and a connecting pipe (33); an air inlet passage (32) is provided on the connecting sleeve (4); the air nozzle (31) is mounted on the connecting sleeve (4) and connected to the air inlet passage (32); one end of the connecting pipe (33) is connected to the air inlet passage (32) and the other end is connected to the supporting airbag (6).

3. A flexible coupling according to claim 1, characterized in that: A mounting groove (7) is provided on the inner side of the connecting belt (5), and the supporting airbag (6) is installed in the mounting groove (7).

4. A flexible coupling according to claim 1, characterized in that: The fastening plates (8) on both sides are provided with support frames (10), the support frames (10) on both sides are symmetrically arranged, and the support frames (10) are fitted in the middle position of the support airbag (6).

5. A flexible coupling according to claim 1, characterized in that: The number of the connecting belts (5) is four, and the four connecting belts are evenly arranged on the first connecting disk (1) and the second connecting disk (2).

6. A flexible coupling according to claim 1, characterized in that: A conical hole (11) is provided in the connecting sleeve (4) on the second connecting plate (2).

7. A flexible coupling according to claim 1, characterized in that: The number of the locking bolts (9) is eight, and the locking bolts (9) are evenly arranged on the first connecting plate (1) and the second connecting plate (2).

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