High-speed laminated anti-throwing coupling structure

Abstract

The invention discloses a high-speed laminated anti-throwing-away coupling structure, and belongs to the technical field of testing equipment of aero-engine case containment, wheel disc over-rotation fracture, low-cycle fatigue and other testers. The structure comprises a motor output shaft, an output end connecting sleeve, a gearbox input shaft, an input end connecting sleeve and a middle connecting mechanism, the middle connecting mechanism comprises a middle connecting sleeve A and a middle connecting sleeve B, and the middle of the middle connecting sleeve B is connected with one end of the middle connecting sleeve A through a plurality of shearing assemblies; and one end of the middle connecting sleeve B extends into the middle connecting sleeve A and is rotationally connected with the middle connecting sleeve A through a supporting assembly. When a fault occurs or the load is too large, the shearing assembly is sheared off to interrupt the torque and rotating speed output of the motor output shaft and prevent the gear box, the coupler and the tester main motor from being damaged, and meanwhile, the supporting assembly is used for supporting, so that the coupler always keeps the integrity, and the coupler is prevented from being thrown away to cause damage to equipment.

Description

Technical Field

[0001] The invention relates to a high-speed laminated anti-fling coupling structure, belonging to the technical field of test equipment for aircraft engine casing containment, wheel disc over-rotation rupture and low cycle fatigue testers. Background Art

[0002] According to the requirements of GJB241A, the structural integrity of aircraft engine rotors needs to be assessed, and the rotor components of aircraft engines need to undergo over-rotation, disc rupture and low-cycle fatigue life tests. The casing containment problem of aircraft engines directly affects flight safety. Therefore, casing containment tests need to be conducted during the engine development process. However, the above tests are all conducted on vertical or horizontal disc over-rotation / casing containment testers. The coupling is a core component of the vertical or horizontal disc over-rotation / casing containment tester. The coupling with excellent structure can ensure the safe operation of the equipment and the smooth completion of the test. At the same time, after a failure of the equipment, it can effectively protect the safety of the equipment connected before and after the coupling.

[0003] At present, the coupling structure used in vertical or horizontal wheel overspeed testers is mostly as follows: Figure 1 As shown, it includes a motor output shaft 1, an output end connection sleeve 2, an intermediate connection sleeve 6, an input end connection sleeve 7 and a gearbox input shaft 8, wherein the output end connection sleeve 2 is sleeved on the motor output shaft 1 and connected to the motor output shaft 1 through a key, the input end connection sleeve 7 is sleeved on the gearbox input shaft 8 and connected to the gearbox input shaft 8 through a key, one end of the intermediate connection sleeve 6 is connected to one end of the output end connection sleeve 2 through multiple connection components A, and the other end is connected to one end of the input end connection sleeve 7 through multiple connection components A; the connection component A includes a bolt 3, a nut 5 and a stack 4, the nut 5 is threadedly connected to the bolt 3, the stack 4 is sleeved on the bolt 3, and is located between the output end connection sleeve 2 and the intermediate connection sleeve 6, or between the input end connection sleeve 7 and the intermediate connection sleeve 6. This coupling can realize the transmission of the speed and torque of the motor output shaft 1 to the gearbox input shaft 8, and the stack 4 can perform angular displacement and axial displacement compensation to meet the use requirements of the equipment.

[0004] However, when the equipment fails and the torque increases dramatically, the gearbox, coupling, and main motor will be damaged to varying degrees. At the same time, if the coupling flies off after being damaged, the equipment will suffer secondary damage. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a high-speed laminated anti-fling coupling structure.

[0006] The present invention is achieved through the following technical solutions:

[0007] A high-speed laminated anti-fling coupling structure comprises a motor output shaft, an output end connecting sleeve, a gearbox input shaft, an input end connecting sleeve and an intermediate connecting mechanism, wherein the output end connecting sleeve is sleeved on the motor output shaft and connected to the motor output shaft through a key, the input end connecting sleeve is sleeved on the gearbox input shaft and connected to the gearbox input shaft through a key, one end of the intermediate connecting mechanism is connected to one end of the output end connecting sleeve through a plurality of connecting components A, and the other end is connected to one end of the input end connecting sleeve through a plurality of connecting components A;

[0008] The intermediate connecting mechanism includes an intermediate connecting sleeve A and an intermediate connecting sleeve B. The middle part of the intermediate connecting sleeve B is connected to one end of the intermediate connecting sleeve A through a plurality of shear components, and one end of the intermediate connecting sleeve B extends into the intermediate connecting sleeve A and is rotatably connected to the intermediate connecting sleeve A through a supporting component.

[0009] The flange A at one end of the intermediate connection mechanism is connected to the flange B at one end of the output end connection sleeve through a plurality of connection components A.

[0010] The flange C at one end of the intermediate connection mechanism away from the flange A is connected to the flange D at one end of the input end connecting sleeve through a plurality of connection components A.

[0011] Both ends of the intermediate connecting sleeve A are provided with flanges C, wherein the flange C at one end is connected to the flange D at one end of the input end connecting sleeve through multiple connecting components A, and the flange C at the other end is connected to the flange E in the middle of the intermediate connecting sleeve B through multiple shear components.

[0012] The shearing component is a shearing pin.

[0013] A V-shaped groove is formed in the middle of the shear pin along the circumferential direction, and the V-shaped groove is located between the flange C and the flange E on the end of the intermediate connecting sleeve A away from the input end connecting sleeve.

[0014] It also includes two pins. Two blind holes are radially provided on the shear pin. Pin holes are radially provided on the flange C and the flange E at positions corresponding to the blind holes. After one end of the two pins passes through the pin holes on the flange C and the flange E, they are inserted into the two blind holes on the shear pin one by one.

[0015] The connection assembly A comprises bolts, nuts and laminations. The nuts are threadedly connected to the bolts. The laminations are sleeved on the bolts and are located between the output end connection sleeve and the intermediate connection mechanism, or between the input end connection sleeve and the intermediate connection mechanism.

[0016] The support assembly includes a clamping end cover and two bearings. The two bearings are both mounted on the intermediate connecting sleeve B and are located between the intermediate connecting sleeve A and the intermediate connecting sleeve B. A shaft sleeve is provided between the outer rings of the two bearings. The clamping end cover is connected to the intermediate connecting sleeve B by multiple screws and is pressed on the inner ring of one of the bearings.

[0017] The inner ring of the bearing far away from the clamping end cover of the two bearings is axially limited by the shoulder on the intermediate connecting sleeve B.

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

[0019] 1. The shear pin is designed according to the output torque range of the motor output shaft. During the test, if the actual torque exceeds the torque safety protection value of the tester or the gearbox, the shear pin will be sheared at the V-groove, so that the motor output shaft is disengaged from the gearbox input shaft, further reducing the motor load and effectively protecting the safety of the coupling and the motor.

[0020] 2. When the shear pin is about to be cut off, if the motor output shaft continues to rotate, it will drive the bearing to rotate through the key, the output end connecting sleeve, the connecting assembly A and the intermediate connecting sleeve B. At the same time, the bearing supports the intermediate connecting sleeve A to keep the integrity of the coupling, thereby preventing the shear pin from being in a cantilever state at the cut-off point, and the coupling from being thrown off, causing damage to the equipment on both sides of the coupling, so as to maximize the protection of the safety of the test equipment and have greater economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the existing coupling structure of the vertical and horizontal rotary disc over-rotation / casing inclusion tester;

[0022] Figure 2 It is a structural schematic diagram of the coupling structure of the present invention.

[0023] In the figure: 1-motor output shaft, 2-output end connecting sleeve, 3-bolt, 4-laminate, 5-nut, 6-intermediate connecting sleeve, 7-input end connecting sleeve, 8-gearbox input shaft, 9-shear assembly, 90-V-groove, 10-pin, 11-intermediate connecting sleeve A, 12-bearing, 13-tightening end cover, 14-screw, 15-intermediate connecting sleeve B, 16-shaft sleeve. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0025] like Figure 1 and Figure 2As shown, a high-speed laminated anti-fling coupling structure described in the present invention comprises a motor output shaft 1, an output end connecting sleeve 2, a gear box input shaft 8, an input end connecting sleeve 7 and an intermediate connecting mechanism, wherein the output end connecting sleeve 2 is sleeved on the motor output shaft 1 and connected to the motor output shaft 1 through a key, the input end connecting sleeve 7 is sleeved on the gear box input shaft 8 and connected to the gear box input shaft 8 through a key, one end of the intermediate connecting mechanism is connected to one end of the output end connecting sleeve 2 through a plurality of connecting components A, and the other end is connected to one end of the input end connecting sleeve 7 through a plurality of connecting components A;

[0026] The intermediate connection mechanism includes an intermediate connection sleeve A11 and an intermediate connection sleeve B15, the middle part of the intermediate connection sleeve B15 is connected to one end of the intermediate connection sleeve A11 through a plurality of shearing components 9, and one end of the intermediate connection sleeve B15 extends into the intermediate connection sleeve A11 and is rotationally connected to the intermediate connection sleeve A11 through a supporting component. When in use, the motor output shaft 1 of the vertical or horizontal wheel over-rotation / casing inclusion tester transmits torque and speed to the gearbox input shaft 8 through the intermediate connection mechanism, thereby achieving the purpose of testing its function. If the gearbox input shaft 8 fails or the load is too large, the shearing component 9 in the intermediate connection mechanism will be cut off to interrupt the torque and speed output of the motor output shaft 1, prevent the gearbox, coupling and tester main motor from being damaged, and at the same time support through the supporting component, so that the coupling composed of the output end connection sleeve 2, the intermediate connection mechanism and the input end connection sleeve 7 always maintains its integrity, preventing the coupling from being thrown away and causing damage to the equipment.

[0027] The flange A at one end of the intermediate connection mechanism is connected to the flange B at one end of the output end connection sleeve 2 through a plurality of connection components A.

[0028] The flange C at one end of the intermediate connection mechanism away from the flange A is connected to the flange D at one end of the input end connecting sleeve 7 through a plurality of connecting components A.

[0029] Both ends of the intermediate connecting sleeve A11 are provided with flanges C, wherein the flange C at one end is connected to the flange D at one end of the input end connecting sleeve 7 through multiple connecting components A, and the flange C at the other end is connected to the flange E in the middle of the intermediate connecting sleeve B15 through multiple shear components 9.

[0030] Specifically, the output-end connecting sleeve 2 is connected to the motor output shaft 1 through a key, the flange A at one end of the intermediate connecting sleeve B15 is connected to the flange B at the end of the output-end connecting sleeve 2 through multiple connecting components A, the flange C at one end of the intermediate connecting sleeve A11 is connected to the flange E in the middle of the intermediate connecting sleeve B15 through multiple shear components 9, the flange D at one end of the input-end connecting sleeve 7 is connected to the flange C at the end of the intermediate connecting sleeve A11 away from the intermediate connecting sleeve B15 through multiple connecting components A, and the gearbox input shaft 8 is connected to the input-end connecting sleeve 7 through a key; when the motor output shaft 1 rotates, the torque and speed can be transmitted to the gearbox input shaft 8.

[0031] The shearing component 9 is a shearing pin.

[0032] A V-shaped groove 90 is formed in the middle of the shear pin along the circumferential direction, and the V-shaped groove 90 is located between the flange C and the flange E at one end of the intermediate connecting sleeve A11 away from the input end connecting sleeve 7. When in use, the shear pin is designed according to the output torque range of the motor output shaft 1. During the test, if the actual torque exceeds the torque safety protection value of the tester or the gearbox, the shear pin will be sheared at the V-shaped groove 90, so that the motor output shaft 1 is disengaged from the gearbox input shaft 8, further reducing the motor load, and effectively protecting the safety of the coupling and the motor.

[0033] It also includes two pins 10, two blind holes are radially arranged on the shear pin, and pin holes are radially arranged on the flanges C and E at positions corresponding to the blind holes, and one end of the two pins 10 passes through the pin holes on the flanges C and E, and then is inserted into the two blind holes on the shear pin one by one. The two pins 10 are inserted into the two blind holes on the shear pin one by one to achieve the shear pin anti-rotation and anti-loosening.

[0034] The connection assembly A comprises a bolt 3, a nut 5 and a stack 4. The nut 5 is threadedly connected to the bolt 3. The stack 4 is sleeved on the bolt 3 and is located between the output end connection sleeve 2 and the intermediate connection mechanism, or between the input end connection sleeve 7 and the intermediate connection mechanism. The stack 4 is used to compensate for angular displacement and axial displacement.

[0035] The support assembly includes a clamping end cover 13 and two bearings 12. The two bearings 12 are both mounted on the intermediate connecting sleeve B15 and are located between the intermediate connecting sleeve A11 and the intermediate connecting sleeve B15. A shaft sleeve 16 is provided between the outer rings of the two bearings 12. The clamping end cover 13 is connected to the intermediate connecting sleeve B15 through a plurality of screws 14 and is pressed on the inner ring of one of the bearings 12.

[0036] The inner ring of the bearing 12 of the two bearings 12 that is away from the clamping end cover 13 is axially limited by the shoulder on the intermediate connecting sleeve B15. The high-speed motor of the vertical or horizontal wheel overspeed / casing inclusion tester drives the motor output shaft 1 to rotate, and transmits the torque and speed to the gearbox input shaft 8 through the coupling, so as to test its function. If the gearbox input shaft 8 fails or the load is too large, the shear pin will be cut off to interrupt the torque and speed output; at this time, if the motor output shaft 1 continues to rotate, it will drive the bearing 12 to rotate together through the key, the output end connecting sleeve 2, the connecting assembly A and the intermediate connecting sleeve B15. At the same time, the bearing 12 supports the intermediate connecting sleeve A11 to keep the coupling intact, thereby preventing the shear pin from being in a cantilever state at the shearing point, the coupling being thrown off, and causing damage to the equipment on both sides of the coupling, so as to maximize the protection of the safety of the test equipment and have greater economic value. The intermediate connecting sleeve B15 supports the intermediate connecting sleeve A11 through two parallel bearings 12, thereby ensuring the support stability of the intermediate connecting sleeve A11.

Claims

1. A high-speed laminated anti-fling coupling structure, characterized in that: The invention comprises a motor output shaft (1), an output end connecting sleeve (2), a gear box input shaft (8), an input end connecting sleeve (7) and an intermediate connecting mechanism, wherein the output end connecting sleeve (2) is sleeved on the motor output shaft (1) and connected to the motor output shaft (1) via a key, the input end connecting sleeve (7) is sleeved on the gear box input shaft (8) and connected to the gear box input shaft (8) via a key, one end of the intermediate connecting mechanism is connected to one end of the output end connecting sleeve (2) via a plurality of connecting components A, and the other end is connected to one end of the input end connecting sleeve (7) via a plurality of connecting components A; The intermediate connection mechanism comprises an intermediate connection sleeve A (11) and an intermediate connection sleeve B (15), wherein the middle portion of the intermediate connection sleeve B (15) is connected to one end of the intermediate connection sleeve A (11) via a plurality of shearing components (9), and one end of the intermediate connection sleeve B (15) extends into the intermediate connection sleeve A (11) and is rotationally connected to the intermediate connection sleeve A (11) via a supporting component.

2. The high-speed laminated anti-fling coupling structure according to claim 1, characterized in that: The flange A at one end of the intermediate connection mechanism is connected to the flange B at one end of the output end connection sleeve (2) through a plurality of connection components A.

3. The high-speed laminated anti-fling coupling structure according to claim 2, characterized in that: The flange C at one end of the intermediate connection mechanism away from the flange A is connected to the flange D at one end of the input end connection sleeve (7) through a plurality of connection components A.

4. The high-speed laminated anti-fling coupling structure according to claim 3 is characterized in that: Both ends of the intermediate connecting sleeve A (11) are provided with flanges C, wherein the flange C at one end is connected to the flange D at one end of the input end connecting sleeve (7) through a plurality of connecting components A, and the flange C at the other end is connected to the flange E in the middle of the intermediate connecting sleeve B (15) through a plurality of shear components (9).

5. The high-speed laminated anti-fling coupling structure according to claim 4 is characterized in that: The shearing component (9) is a shearing pin.

6. The high-speed laminated anti-fling coupling structure according to claim 5, characterized in that: A V-shaped groove (90) is formed in the middle of the shear pin along the circumferential direction, and the V-shaped groove (90) is located between a flange C and a flange E on the end of the intermediate connecting sleeve A (11) away from the input end connecting sleeve (7).

7. The high-speed laminated anti-fling coupling structure according to claim 6, characterized in that: It also includes two pins (10), two blind holes are radially arranged on the shear pin, and pin holes are radially arranged on the flange C and the flange E at positions corresponding to the blind holes, and one end of the two pins (10) passes through the pin holes on the flange C and the flange E and is inserted into the two blind holes on the shear pin one by one.

8. The high-speed laminated anti-fling coupling structure according to claim 1, characterized in that: The connection assembly A comprises a bolt (3), a nut (5) and a stack (4); the nut (5) is threadedly connected to the bolt (3); the stack (4) is sleeved on the bolt (3) and is located between the output end connection sleeve (2) and the intermediate connection mechanism, or between the input end connection sleeve (7) and the intermediate connection mechanism.

9. The high-speed laminated anti-fling coupling structure according to claim 1, characterized in that: The support assembly comprises a clamping end cover (13) and two bearings (12). The two bearings (12) are both mounted on an intermediate connecting sleeve B (15) and are located between the intermediate connecting sleeve A (11) and the intermediate connecting sleeve B (15). A shaft sleeve (16) is provided between the outer rings of the two bearings (12). The clamping end cover (13) is connected to the intermediate connecting sleeve B (15) via a plurality of screws (14) and is pressed onto the inner ring of one of the bearings (12).

10. The high-speed laminated anti-fling coupling structure according to claim 9, characterized in that: The inner ring of the bearing (12) of the two bearings (12) which is away from the clamping end cover (13) is axially limited by a shaft shoulder on the intermediate connecting sleeve B (15).

Images