Sealing test platform for precision matching parts of aero-engine

Abstract

The utility model discloses an aero-engine precision matching part sealing test platform in the technical field of precision matching part testing, which comprises a fixed seat, an air guide frame is arranged at the top of the fixed seat, a placing hole used for fixing a workpiece is arranged on the inner side of the fixed seat, an air pump is arranged at the bottom of the fixed seat, one side of the air pump is connected with an air guide pipe, and the air guide pipe is connected with the air guide frame. The flow velocity meter at the top of the inner side of the gas guide frame can monitor air flow, the gas guide frame and the fixing seat can be sealed through the sealing assembly, it is avoided that gas flows in the gas direction to affect the detection accuracy, the gas guide pipe enables the gas to only penetrate through a workpiece to flow, and the detection accuracy is improved. The problems that when an existing device detects the airtightness of a part, the part is prone to loosening or shifting, the stability of part clamping and fixing is reduced, the airtightness of the splicing position of the existing device and a wrapped workpiece is poor, gas leakage is prone to being caused, and the accuracy and practicability of the device for detecting the airtightness of the workpiece are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision mating parts testing, in particular to a sealing test platform for precision mating parts of an aero-engine. Background Art

[0002] Precision mating parts are important components of the power control part of aircraft engines. Mating parts are two parts that must be manufactured in pairs and cannot be interchanged or configured. Mating parts usually also refer to shaft-hole matching parts that cooperate with each other and have very high requirements. Precision mating parts need to be tested during the production and processing process. However, gas leakage is prone to occur when existing equipment performs sealing tests on parts, affecting the accuracy of the sealing test of parts.

[0003] When existing equipment performs air tightness testing on parts, parts are prone to loosening or shifting, reducing the stability of part clamping and fixation. In addition, the sealing of the joints and the wrapping of the workpieces of the existing equipment is poor, which can easily lead to gas leakage, affecting the accuracy and practicality of the equipment for air tightness testing of the workpiece. Therefore, technical personnel in this field provide an aircraft engine precision mating parts sealing test platform to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a sealing test platform for precision mating parts of an aero-engine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aircraft engine precision parts sealing test platform, comprising a fixed seat, a gas guide frame is installed on the top of the fixed seat, a placement hole for fixing the workpiece is opened on the inner side of the fixed seat, an air pump is installed at the bottom of the fixed seat, an air guide pipe is connected to one side of the air pump, and a flow meter for monitoring gas flow is installed on the top of the gas guide frame;

[0006] A limiting component for wrapping the workpiece is installed on the inner side of the placement hole, clamping components for fixing the workpiece are installed on both sides of the placement hole, locking components are installed on the outer side of the air guide frame and the fixed seat, and a sealing component for preventing gas leakage is installed on the inner side of the air guide frame and the fixed seat, and the air guide pipe is connected to the placement hole.

[0007] Preferably: the clamping assembly includes a movable groove opened on the inner side of the fixed seat and located on both sides of the placement hole, a screw rod for driving passes through the inner side of the movable groove, a sliding plate for connection is mounted on the outer side of the screw rod, one end of the sliding plate is connected to a clamping plate, one side of the clamping plate is covered with an anti-slip pad, one end of the screw rod is installed with a motor, and the screw rod passes through the sliding plate and is screwed thereto.

[0008] Preferably: the limiting assembly comprises an elastic ring connected to the inner wall of the placement hole, one side of the elastic ring is connected to an anti-slip ring, a plurality of evenly arranged support rings are installed on the inner side of the elastic ring, and the support ring is fixedly connected to the elastic ring.

[0009] Preferably: the locking assembly includes four fixing grooves arranged circumferentially on the outer side of the fixing seat, a pad for connection is installed on the inner side of the fixing groove, a pull rod is installed on one side of the pad, a spring for extrusion is sleeved on one side of the pad and located on the outer side of the pull rod, and both ends of the spring are fixedly connected to the fixing groove and the pad respectively.

[0010] Preferably, the locking assembly further comprises a locking block which is sleeved on the outside of the pull rod and close to the end, and the outside of the air guide frame is provided with four circumferentially arranged notches, and one side of the notch is provided with a locking groove.

[0011] Preferably: the sealing assembly includes a gasket installed on the top of the fixed seat, a pressure ring at the inner bottom of the air guide frame, a movable cavity is opened at the inner bottom of the pressure ring, a support member is installed inside the movable cavity, a sealing ring is connected to the bottom of the support member, and the support member is fixedly connected to the sealing ring.

[0012] Preferably, two sealing rings are installed on the top of the gasket, a fitting groove is provided on the top of the gasket and located between the two sealing rings, and two sealing grooves are provided on the bottom of the pressure ring and located on both sides of the active cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by arranging an air guide frame, an air guide tube and a flow meter, the clamping assembly can clamp and fix the workpiece to prevent the workpiece from loosening or detaching, the limiting assembly can wrap and limit the workpiece, and then the air guide frame and the fixing seat are installed and fixed by the locking assembly, and the air pump blows air into the placement hole through the air guide tube. The flow meter on the top of the inner side of the air guide frame can monitor the air flow, and the sealing assembly can be used to seal the air guide frame and the fixing seat to prevent the gas from flowing in the gas direction and affecting the detection accuracy, so that the air guide tube can only allow the gas to flow through the workpiece, thereby performing air tightness detection on the workpiece, thereby improving the convenience and accuracy of the equipment in detecting the workpiece.

[0015] 2. In the utility model, by arranging a screw, a sliding plate and a clamping plate, the screw can rotate in the fixed seat, so that the screw drives the clamping plate on one side of the sliding plate to move in the placement hole, so that the anti-slip pads on one side of the two clamping plates fit closely with the workpiece, thereby improving the stability of fixing the workpiece.

[0016] 3. In the utility model, by arranging an elastic ring and an anti-slip ring, a plurality of arc-shaped rings are evenly arranged on the inner side of the anti-slip ring, which can increase the contact area between the anti-slip ring and the workpiece. The elastic ring can squeeze the anti-slip ring and the workpiece to fit tightly, thereby improving the stability of the fixed workpiece and the sealing of the wrapped workpiece, and preventing gas from passing through the placement hole at other positions and affecting the accuracy of the workpiece air tightness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0019] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 The overall structure of the utility model Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 The overall structure of the utility model Figure 2 Enlarged view of point C in the middle;

[0022] Figure 6 It is a structural schematic diagram of the air guide frame, the notch and the locking groove in the overall structure of the utility model.

[0023] In the figure: 1. fixing seat; 2. air guide frame; 3. placement hole; 4. air pump; 5. air guide tube; 6. flow meter; 7. movable groove; 8. screw; 9. sliding plate; 10. clamping plate; 11. anti-skid pad; 12. motor; 13. elastic ring; 14. anti-skid ring; 15. support ring; 16. fixing groove; 17. pad; 18. pull rod; 19. spring; 20. locking block; 21. notch; 22. locking groove; 23. gasket; 24. pressure ring; 25. movable cavity; 26. support member; 27. sealing ring; 28. sealing ring; 29. ​​fitting groove; 30. sealing groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 to Figure 6In the embodiment of the utility model, a sealing test platform for precision parts of an aircraft engine includes a fixed seat 1, an air guide frame 2 is installed on the top of the fixed seat 1, a placement hole 3 for fixing a workpiece is opened on the inner side of the fixed seat 1, an air pump 4 is installed at the bottom of the fixed seat 1, and an air guide pipe 5 is connected to one side of the air pump 4. A flow meter 6 for monitoring gas flow is installed on the top of the air guide frame 2, a limiting component for wrapping the workpiece is installed on the inner side of the placement hole 3, and clamping components for fixing the workpiece are respectively installed on both sides of the placement hole 3. Locking components are installed on the outer sides of the air guide frame 2 and the fixed seat 1, and sealing components for preventing gas leakage are installed on the inner sides of the air guide frame 2 and the fixed seat 1, and the air guide pipe 5 is connected to the placement hole 3.

[0026] When in use, the clamping assembly can clamp and fix the workpiece to prevent the workpiece from loosening or detaching. The limiting assembly can wrap and limit the workpiece, and then the air guide frame 2 and the fixing seat 1 are installed and fixed through the locking assembly. The air pump 4 blows air into the placement hole 3 through the air guide pipe 5. The flow meter 6 on the top of the inner side of the air guide frame 2 can monitor the air flow. The sealing assembly can be used to seal the air guide frame 2 and the fixing seat 1 to prevent the gas from flowing in the gas direction and affecting the detection accuracy, so that the air guide pipe 5 can only allow the gas to flow through the workpiece, thereby performing air tightness detection on the workpiece, thereby improving the convenience and accuracy of the equipment in detecting the workpiece.

[0027] In one embodiment, specifically, the clamping assembly includes a movable groove 7 opened on the inner side of the fixed seat 1 and located on both sides of the placement hole 3, a screw rod 8 for driving passes through the inner side of the movable groove 7, a sliding plate 9 for connection is mounted on the outer side of the screw rod 8, a clamping plate 10 is connected to one end of the sliding plate 9, an anti-slip pad 11 is laid on one side of the clamping plate 10, a motor 12 is installed at one end of the screw rod 8, and the screw rod 8 passes through the sliding plate 9 and is screwed thereto.

[0028] The screw 8 can rotate in the fixing seat 1, so that the screw 8 drives the clamping plate 10 on one side of the sliding plate 9 to move in the placement hole 3, so that the anti-slip pads 11 on one side of the two clamping plates 10 fit closely with the workpiece, thereby improving the stability of fixing the workpiece.

[0029] Furthermore, the limiting assembly includes an elastic ring 13 connected to the inner wall of the placement hole 3, a non-slip ring 14 is connected to one side of the elastic ring 13, and a plurality of evenly arranged support rings 15 are installed inside the elastic ring 13, and the support ring 15 is fixedly connected to the elastic ring 13.

[0030] In one embodiment, specifically, there are multiple arc-shaped circles evenly arranged on the inner side of the anti-slip ring 14, which can increase the contact area between the anti-slip ring 14 and the workpiece. The elastic ring 13 can squeeze the anti-slip ring 14 and tightly wrap the workpiece, which can improve the stability of the fixed workpiece and the sealing of the wrapped workpiece, and prevent gas from passing through the placement hole 3 from other positions, affecting the accuracy of the workpiece air tightness detection.

[0031] Among them, the locking assembly includes four fixing grooves 16 arranged circumferentially on the outer side of the fixing seat 1, a pad 17 for connection is installed on the inner side of the fixing groove 16, a pull rod 18 is installed on one side of the pad 17, and a spring 19 for extrusion is sleeved on one side of the pad 17 and located on the outer side of the pull rod 18. The locking assembly also includes a locking block 20 sleeved on the outer side of the pull rod 18 and close to the end, four notches 21 arranged circumferentially are opened on the outer side of the air guide frame 2, a locking groove 22 is opened on one side of the notch 21, and both ends of the spring 19 are fixedly connected to the fixing groove 16 and the pad 17 respectively.

[0032] Specifically, the locking block 20 and the locking groove 22 are both annular, and the spring 19 in the fixing groove 16 can squeeze the pad 17, and then the pad 17 drives the locking block 20 outside the pull rod 18 to move, so that the locking block 20 is embedded in the locking groove 22 to lock and fix the air guide frame 2, so that the air guide frame 2 can be installed and fixed after the workpiece is installed, so that the equipment can perform air tightness detection on the workpiece.

[0033] Furthermore, the sealing assembly includes a gasket 23 installed on the top of the fixed seat 1, a pressure ring 24 at the inner bottom of the air guide frame 2, an active cavity 25 is opened at the inner bottom of the pressure ring 24, a support member 26 is installed on the inner side of the active cavity 25, a sealing ring 27 is connected to the bottom of the support member 26, two sealing rings 28 are installed on the top of the gasket 23, a fitting groove 29 is opened on the top of the gasket 23 and located between the two sealing rings 28, two sealing grooves 30 are opened on the bottom of the pressure ring 24 and located on both sides of the active cavity 25, the support member 26 is fixedly connected to the sealing ring 27, and when the air guide frame 2 and the fixed seat 1 are fitted and installed, the pressure ring 24 and the gasket 23 are tightly fitted, the support member 26 in the active cavity 25 squeezes the sealing ring 27, and then the sealing ring 27 is embedded in the fitting groove 29 on the top of the gasket 23, and the sealing ring 28 is embedded in the sealing groove 30, thereby performing multiple sealing on the movable frame and the top of the fixed seat 1.

[0034] The working principle of this utility model:

[0035] First, place the workpiece in the placement hole 3 inside the fixed seat 1. At this time, the elastic ring 13 squeezes the anti-skid ring 14 to tightly wrap the workpiece, and then start the motor 12 to drive the screw 8 to rotate in the fixed seat 1, and then the screw 8 drives the clamping plate 10 on one side of the sliding plate 9 to move in the placement hole 3. At this time, the anti-skid pads 11 on one side of the two clamping plates 10 are tightly fitted with the workpiece, and then the air guide frame 2 is placed on the top of the fixed seat 1, and then the pull rod 18 is slowly released. At this time, the spring 19 in the fixed groove 16 squeezes the pad 17, and then the pad 17 drives the locking block 20 on the outside of the pull rod 18 to The air guide frame 2 is moved, and the locking block 20 is embedded in the locking groove 22 to lock and fix the air guide frame 2. At the same time, the pressure ring 24 and the gasket 23 are tightly fitted when the air guide frame 2 is fitted with the fixing seat 1. The support member 26 in the movable cavity 25 squeezes the sealing ring 27, and then the sealing ring 27 is embedded in the fitting groove 29 at the top of the gasket 23. At the same time, the sealing ring 28 is embedded in the sealing groove 30. Then the air pump 4 is started to blow air into the placement hole 3 through the air guide pipe 5. At this time, the velocity meter 6 on the top of the inner side of the air guide frame 2 monitors the air flow. When there is a leakage gap in the workpiece, the velocity meter 6 will detect the flow of air.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aircraft engine precision parts sealing test platform, comprising a fixing seat (1), characterized in that: An air guide frame (2) is installed on the top of the fixing seat (1), a placement hole (3) for fixing a workpiece is opened on the inner side of the fixing seat (1), an air pump (4) is installed on the bottom of the fixing seat (1), an air guide pipe (5) is connected to one side of the air pump (4), and a flow meter (6) for monitoring gas flow is installed on the top of the air guide frame (2); A limiting component for wrapping a workpiece is installed inside the placement hole (3), clamping components for fixing the workpiece are installed on both sides of the placement hole (3), locking components are installed on the outside of the air guide frame (2) and the fixing seat (1), and sealing components for preventing gas leakage are installed on the inside of the air guide frame (2) and the fixing seat (1), and the air guide pipe (5) is connected to the placement hole (3).

2. The sealing test platform for precision aircraft engine parts according to claim 1, characterized in that: The clamping assembly comprises a movable groove (7) which is opened on the inner side of the fixing seat (1) and located on both sides of the placement hole (3); a screw rod (8) for driving is passed through the inner side of the movable groove (7); a sliding plate (9) for connecting is sleeved on the outer side of the screw rod (8); one end of the sliding plate (9) is connected to a clamping plate (10); one side of the clamping plate (10) is provided with an anti-slip pad (11); one end of the screw rod (8) is installed with a motor (12); the screw rod (8) passes through the sliding plate (9) and is screwed thereto.

3. The sealing test platform for precision aircraft engine parts according to claim 2, characterized in that: The limiting assembly comprises an elastic ring (13) connected to the inner wall of the placement hole (3); one side of the elastic ring (13) is connected to an anti-slip ring (14); a plurality of evenly arranged support rings (15) are installed inside the elastic ring (13); and the support rings (15) are fixedly connected to the elastic ring (13).

4. The sealing test platform for precision aircraft engine parts according to claim 1, characterized in that: The lock assembly comprises four fixing grooves (16) arranged circumferentially on the outer side of the fixing seat (1), a pad (17) for connection is installed on the inner side of the fixing groove (16), a pull rod (18) is installed on one side of the pad (17), a spring (19) for compression is sleeved on one side of the pad (17) and located on the outer side of the pull rod (18), and the two ends of the spring (19) are fixedly connected to the fixing groove (16) and the pad (17), respectively.

5. The aero-engine precision parts sealing test platform according to claim 4, characterized in that: The locking assembly also includes a locking block (20) sleeved on the outside of the pull rod (18) and close to the end. The outside of the air guide frame (2) is provided with four circumferentially arranged notches (21), and one side of the notch (21) is provided with a locking groove (22).

6. The aero-engine precision parts sealing test platform according to claim 1, characterized in that: The sealing assembly comprises a gasket (23) mounted on the top of the fixing seat (1), a pressure ring (24) at the inner bottom of the air guide frame (2), an active cavity (25) being provided at the inner bottom of the pressure ring (24), a support member (26) being mounted inside the active cavity (25), a sealing ring (27) being connected to the bottom of the support member (26), and the support member (26) and the sealing ring (27) being fixedly connected.

7. The sealing test platform for precision aircraft engine parts according to claim 6, characterized in that: Two sealing rings (28) are installed on the top of the gasket (23); a fitting groove (29) is provided on the top of the gasket (23) and between the two sealing rings (28); and two sealing grooves (30) are provided on the bottom of the pressure ring (24) and on both sides of the active cavity (25).

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