An oil seal test device for a pitch control device

Abstract

The present invention discloses an oil seal test device for a pitch control device, which relates to the field of vibration tests. The device includes a transfer platform, a first connection mechanism, a second connection mechanism, and two sealing members. The transfer platform is provided with a first groove for accommodating the gear shaft step of the pitch control device and a second groove for accommodating the nozzle of the pitch control device. The first connection mechanism is used to install the pitch control device on the transfer platform, and the second connection mechanism is used to install the transfer platform on the vibration test bench. An oil injection port and an oil outlet are provided on the side wall of the transfer platform. The two ends of the first groove are respectively communicated with the oil injection port and the oil outlet, and the two ends of the second groove are respectively communicated with the oil injection port and the oil outlet. The two sealing members are respectively used to seal the oil injection port and the oil outlet. This device facilitates the transfer and installation of the pitch control device on the vibration test bench, can simulate the actual use state, and does not affect the test of vibration characteristics at the same time.

Description

Technical Field

[0001] The invention relates to the field of vibration testing, in particular to an oil seal testing device for a pitch control device. Background Art

[0002] Vibration has a great impact on the structure, function and process performance of the product, which can cause product performance degradation, malfunction or even failure, and the resulting damage is often irreversible. Vibration testing plays an important role in verifying the vibration resistance of products. However, there is no device in the prior art for transferring and installing the pitch control device on a vibration test bench. Since the environment in which the pitch control device is located is relatively complex during actual use and there is lubricating oil inside, it is particularly important to design the transfer tooling to ensure that the vibration characteristics of the product are not affected when simulating the product usage status. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an oil seal test device for a pitch control device, which is convenient for transferring and installing the pitch control device on a vibration test bench, can simulate the actual use state, and does not affect the test of vibration characteristics.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides an oil seal test device for a pitch control device, comprising a transfer platform, a first connecting mechanism, a second connecting mechanism and two sealing members, wherein the transfer platform is provided with a first groove for accommodating a gear shaft step of a pitch control device and a second groove for accommodating a nozzle of the pitch control device, the first connecting mechanism is used to install the pitch control device on the transfer platform, the second connecting mechanism is used to install the transfer platform on a vibration test bench, an oil filling port and an oil outlet are provided on a side wall of the transfer platform, two ends of the first groove are respectively connected to the oil filling port and the oil outlet, two ends of the second groove are respectively connected to the oil filling port and the oil outlet, and the two sealing members are respectively used to seal the oil filling port and the oil outlet.

[0006] Optionally, a plurality of first connecting holes are provided on the adapter platform, and the first connecting mechanism is used to install the pitch control device on the adapter platform through the plurality of first connecting holes.

[0007] Optionally, the first connecting mechanism includes a plurality of first connecting assemblies, the first connecting assemblies include first bolts and first nuts, each of the first bolts is used to sequentially pass through a mounting hole and a first connecting hole on the pitch control device and is installed with the first nut.

[0008] Optionally, a plurality of receiving grooves corresponding to the first connection holes one by one are provided at the bottom of the adapter platform, and the receiving grooves are used to receive the first nuts.

[0009] Optionally, a plurality of second connection holes are provided on the adapter platform, and the second connection mechanism is used to mount the adapter platform on the vibration test bench through the plurality of second connection holes.

[0010] Optionally, the second connection mechanism includes a plurality of second bolts, and each of the second bolts is used to pass through one of the second connection holes and be installed in the threaded holes of the vibration test bench.

[0011] Optionally, a plurality of the second grooves are provided. Some of the second grooves are communicated in sequence. The second groove at the head end in some of the second grooves is communicated with the oil injection port, and the second groove at the tail end in some of the second grooves is communicated with one end of the first groove; the remaining second grooves are communicated in sequence. The second groove at the head end in the remaining second grooves is communicated with the other end of the first groove, and the second groove at the tail end in the remaining second grooves is communicated with the oil outlet.

[0012] Optionally, a gasket is further included, and the gasket is used to be disposed between the lower surface of the pitch control device and the upper surface of the adapter platform.

[0013] Optionally, a first through hole for the gear shaft step of the pitch control device to pass through, a second through hole for the nozzle of the pitch control device to pass through, and a third through hole for the first bolt to pass through are provided on the gasket.

[0014] Optionally, the plugging member is a threaded plug.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] The oil seal test device of the pitch control device of the present invention includes an adapter platform, a first connection mechanism, a second connection mechanism, and two plugging members. The first connection mechanism is used to mount the pitch control device on the adapter platform, and the second connection mechanism is used to mount the adapter platform on the vibration test bench. The pitch control device is connected to the vibration test bench through the adapter platform. A first groove for receiving the gear shaft step and a second groove for receiving the nozzle are provided on the adapter platform and are communicated with the oil injection port and the oil outlet. Lubricating oil is injected through the oil injection port, and the air inside the structure is discharged through the oil outlet. Then, the oil injection port and the oil outlet are blocked by the plugging members, so as to ensure that the internal structure of the pitch control device is filled with lubricating oil, which can simulate the actual use state and does not affect the vibration characteristic test at the same time. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the oil seal test device for the pitch control device provided by the present invention during use;

[0019] Figure 2 Exploded view of the oil seal test device for the pitch control device provided by the present invention during use;

[0020] Figure 3 First three-dimensional structure diagram of the adapter platform in the oil seal test device for the pitch control device provided by the present invention;

[0021] Figure 4 Second three-dimensional structure diagram of the adapter platform in the oil seal test device for the pitch control device provided by the present invention;

[0022] Figure 5 Structural schematic diagram of the gasket in the oil seal test device for the pitch control device provided by the present invention;

[0023] Figure 6 First three-dimensional structure diagram of the pitch control device corresponding to the oil seal test device for the pitch control device provided by the present invention;

[0024] Figure 7 Second three-dimensional structure diagram of the pitch control device corresponding to the oil seal test device for the pitch control device provided by the present invention.

[0025] Explanation of reference numerals: 1. Adapter platform; 2. First groove; 3. Second groove; 4. Oil injection port; 5. Oil outlet; 6. First channel; 7. Second channel; 8. First connection hole; 9. Accommodating groove; 10. Second connection hole; 11. Gasket; 12. First through hole; 13. Second through hole; 14. Third through hole; 15. Pitch control device; 16. Gear shaft step; 17. Nozzle; 18. Mounting hole. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0027] The object of the present invention is to provide an oil seal test device for a pitch control device, which facilitates the transfer and installation of the pitch control device on a vibration test bench, can simulate the actual use state, and does not affect the test of vibration characteristics.

[0028] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] As Figures 1-7 shown, this embodiment provides an oil seal test device for a pitch control device, including a transfer platform 1, a first connection mechanism, a second connection mechanism, and two plugging members. A first groove 2 for accommodating the gear shaft step 16 of the pitch control device 15 and a second groove 3 for accommodating the nozzle 17 of the pitch control device 15 are provided on the transfer platform 1. The first connection mechanism is used to install the pitch control device 15 on the transfer platform 1, and the second connection mechanism is used to install the transfer platform 1 on the vibration test bench. An oil injection port 4 and an oil outlet 5 are provided on the side wall of the transfer platform 1. Both ends of the first groove 2 are respectively communicated with the oil injection port 4 and the oil outlet 5, and both ends of the second groove 3 are respectively communicated with the oil injection port 4 and the oil outlet 5. The two plugging members are respectively used to plug the oil injection port 4 and the oil outlet 5.

[0030] In this embodiment, the pitch control device 15 is connected to the vibration test bench through the transfer platform 1. The pitch control device 15 is first connected to the transfer platform 1 to form an integral structure. In the first step, simulation is carried out, and in the second step, the swept frequency or the natural frequency of the integral structure is tested, so that the natural frequency of the integral structure does not fall within the narrowband frequency range of the vibration test, thereby ensuring that the overall structure frequency avoids the resonance frequency. By adjusting the size and material selection of the transfer platform 1, the stiffness of the overall structure meets the requirements. A first groove 2 for accommodating the gear shaft step 16 and a second groove 3 for accommodating the nozzle 17 are provided on the transfer platform 1 and are communicated with the oil injection port 4 and the oil outlet 5. Lubricating oil is injected through the oil injection port 4, and the air inside the structure is discharged through the oil outlet 5. Then, the oil injection port 4 and the oil outlet 5 are blocked by the plugging members, so as to ensure that the internal structure of the pitch control device 15 is filled with lubricating oil, which can simulate the actual use state and does not affect the test of vibration characteristics at the same time.

[0031] As Figure 3 shown, a plurality of first connection holes 8 are provided on the transfer platform 1. The first connection mechanism is used to install the pitch control device 15 on the transfer platform 1 through the plurality of first connection holes 8.

[0032] The first connection mechanism includes a plurality of first connection components. Each first connection component includes a first bolt and a first nut. A plurality of mounting holes 18 for mounting the first bolts are provided on the pitch control device 15. Each first bolt is used to sequentially pass through a mounting hole 18 on the pitch control device 15 and a first connection hole 8 and is installed with a first nut, so as to be able to fix the pitch control device 15 to the adapter platform 1. In this embodiment, the specific position of the first connection hole 8 is determined according to the mounting holes 18 on the pitch control device 15, so that the first connection hole 8 corresponds to the mounting hole 18 in position.

[0033] As Figure 4 shown, a plurality of receiving grooves 9 corresponding to the first connection holes 8 one by one are provided at the bottom of the adapter platform 1. The receiving grooves 9 are used to receive the first nuts, so as to prevent the bottoms of the first nuts and the first bolts from protruding from the bottom surface of the adapter platform 1, so as to ensure that the bottom surface of the adapter platform 1 remains flat after the pitch control device 15 is installed on the adapter platform 1.

[0034] It should be noted that when installing the first bolt, an installation method from bottom to top can also be adopted, so that the first bolt sequentially passes through a first connection hole 8 and a mounting hole 18 on the pitch control device 15 and is installed with a first nut. At this time, the head of the first bolt is located in the receiving groove 9, so as to prevent the head of the first bolt from protruding from the bottom surface of the adapter platform 1.

[0035] A plurality of second connection holes 1 are provided on the adapter platform 1. The second connection mechanism is used to install the adapter platform 1 on the vibration test bench through the plurality of second connection holes 1.

[0036] The second connection mechanism includes a plurality of second bolts. Each second bolt is used to pass through a second connection hole 1 and be installed in the threaded hole of the vibration test bench, so as to be able to fix the adapter platform 1 to the vibration test bench. In this embodiment, the specific position of the second connection hole 1 is determined according to the threaded hole on the vibration test bench, so that the second connection hole 1 corresponds to the threaded hole in position.

[0037] A plurality of second grooves 3 are provided. Some of the second grooves 3 are sequentially connected. The second groove 3 at the head end in some of the second grooves 3 is communicated with the oil injection port 4, and the second groove 3 at the tail end in some of the second grooves 3 is communicated with one end of the first groove 2; the remaining second grooves 3 are sequentially connected. The second groove 3 at the head end in the remaining second grooves 3 is communicated with the other end of the first groove 2, and the second groove 3 at the tail end in the remaining second grooves 3 is communicated with the oil outlet 5. In this embodiment, the head end refers to the end close to the oil injection port 4, and the tail end refers to the end close to the oil outlet 5.

[0038] In this embodiment, the channel for connecting the first groove 2 and the second groove 3 is the first channel 6, and the channel for connecting two second grooves 3 is the second channel 7. Both the first channel 6 and the second channel 7 penetrate the upper surface of the adapter platform 1. The channel for connecting the oil injection port 4 and the second groove 3 is the third channel, and the channel for connecting the oil outlet 5 and the second groove 3 is the fourth channel. Both the third channel and the fourth channel are arranged inside the adapter platform 1, that is, they do not penetrate the upper surface of the adapter platform 1.

[0039] In this specific embodiment, five second grooves 3 are provided. Among them, three second grooves 3 are arranged on one side of the first groove 2, and the three third grooves are connected in sequence. The second groove 3 at the head end among the three second grooves 3 is connected to the oil injection port 4, and the second groove 3 at the tail end among the three second grooves 3 is connected to one end of the first groove 2; the other two second grooves 3 are arranged on the other side of the first groove 2, and the other two second grooves 3 are connected to each other. The second groove 3 at the head end among the other two second grooves 3 is connected to the other end of the first groove 2, and the second groove 3 at the tail end among the other two second grooves 3 is connected to the oil outlet 5.

[0040] This embodiment further includes a gasket 11. The gasket 11 is used to be arranged between the lower surface of the pitch control device 15 and the upper surface of the adapter platform 1, and the sealing performance between the pitch control device 15 and the adapter platform 1 is enhanced by arranging the gasket 11.

[0041] As Figure 5 shown, the gasket 11 is provided with a first through hole 12 for the gear shaft step 16 of the pitch control device 15 to pass through, a second through hole 13 for the nozzle 17 of the pitch control device 15 to pass through, and a third through hole 14 for the first bolt to pass through.

[0042] In this specific embodiment, the plugging member is a threaded plug, and the gasket 11 is a wire gasket 11.

[0043] The specific usage process is as follows: Design and machine an oil seal test device for the pitch control device according to the structure of the pitch control device 15 and the threaded holes of the vibration test bench. Place the pitch control device 15 on the adapter platform 1, and place a gasket 11 between the pitch control device 15 and the adapter platform 1, so that the gear shaft step 16 and the nozzle 17 of the pitch control device 15 are respectively located in the first groove 2 and the second groove 3, and the mounting hole 18 of the pitch control device 15 is aligned with the first connection hole 8. Fix the pitch control device 15 on the adapter platform 1 through the first bolt and the first nut. Inject lubricating oil through the oil injection port 4, discharge the air inside the structure through the oil outlet 5, block the oil injection port 4 and the oil outlet 5 respectively with two plugging parts to ensure that the internal structure of the pitch control device 15 is filled with lubricating oil, and then fix the adapter platform 1 on the vibration test bench through the second bolt. At present, the device in this embodiment can complete the vibration, shock, and acceleration tests of the JST-4 and JST-4A pitch control devices.

[0044] In this specification, specific examples are used to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An oil seal test device for a pitch control device, characterized in that, It includes a transfer platform, a first connecting mechanism, a second connecting mechanism and two plugging members. A first groove for accommodating the gear shaft step of the pitch control device and a second groove for accommodating the nozzle of the pitch control device are provided on the transfer platform. The first connecting mechanism is used to install the pitch control device on the transfer platform, and the second connecting mechanism is used to install the transfer platform on the vibration test bench. An oil injection port and an oil outlet are provided on the side wall of the transfer platform. Both ends of the first groove are respectively communicated with the oil injection port and the oil outlet, and both ends of the second groove are respectively communicated with the oil injection port and the oil outlet. The two plugging members are respectively used to plug the oil injection port and the oil outlet; A plurality of first connecting holes are provided on the transfer platform, and the first connecting mechanism is used to install the pitch control device on the transfer platform through the plurality of first connecting holes; The second grooves are provided in plurality, and some of the second grooves are communicated in sequence. The second groove at the head end of some of the second grooves is communicated with the oil injection port, and the second groove at the tail end of some of the second grooves is communicated with one end of the first groove; The remaining second grooves are communicated in sequence. The second groove at the head end of the remaining second grooves is communicated with the other end of the first groove, and the second groove at the tail end of the remaining second grooves is communicated with the oil outlet; The channel for communicating the first groove and the second groove is the first channel, and the channel for communicating the two second grooves is the second channel. Both the first channel and the second channel penetrate the upper surface of the transfer platform; The channel for communicating the oil injection port and the second groove is the third channel, and the channel for communicating the oil outlet and the second groove is the fourth channel. Both the third channel and the fourth channel are provided inside the transfer platform, that is, neither of them penetrates the upper surface of the transfer platform.

2. The oil seal test device for the pitch control device according to claim 1, characterized in that The first connecting mechanism includes a plurality of first connecting components. The first connecting component includes a first bolt and a first nut. Each first bolt is used to sequentially pass through an installation hole on the pitch control device and a first connecting hole and is installed with the first nut.

3. The oil seal test device for the pitch control device according to claim 2, characterized in that, A plurality of receiving grooves corresponding to the first connecting holes one by one are provided at the bottom of the transfer platform. The receiving grooves are used to receive the first nuts.

4. The oil seal test device for the pitch control device according to claim 1, characterized in that, A plurality of second connecting holes are provided on the transfer platform. The second connecting mechanism is used to install the transfer platform on the vibration test bench through the plurality of second connecting holes.

5. The oil seal test device for the pitch control device according to claim 4, characterized in that, The second connecting mechanism includes a plurality of second bolts. Each second bolt is used to pass through a second connecting hole and is installed in the threaded hole of the vibration test bench.

6. The oil seal test device for the pitch control device according to claim 2, characterized in that, It also includes a gasket. The gasket is used to be arranged between the lower surface of the pitch control device and the upper surface of the transfer platform.

7. The oil seal test device for the pitch control device according to claim 6, characterized in that A first through hole for the gear shaft step of the pitch control device to pass through, a second through hole for the nozzle of the pitch control device to pass through and a third through hole for the first bolt to pass through are provided on the gasket.

8. The oil seal test device for the pitch control device according to claim 1, characterized in that, The plugging member is a threaded plug.

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