Ground oil seal device for main speed reducer of helicopter

Abstract

The utility model discloses a helicopter main reducer ground oil seal device, which relates to the technical field of main reducer oil seal equipment and comprises a mechanical arm fixing table and a fixing seat, a rotating arm is mounted in the middle of the bottom of the mechanical arm fixing table, and the fixing seat is mounted in the middle of the lower portion of the mechanical arm fixing table. A mounting mechanism is arranged in the fixing base and comprises a connecting block, the connecting block is located in the fixing base, the top end of the connecting block is movably connected with a mounting block, a mounting groove is formed in the center of the top end of the mounting block, and a main speed reducer body is mounted in the mounting groove. The main reducer body is fixed at the rotating arm in the whole course and not all, so that the influence of narrow space on the fixing operation is avoided, the fixing efficiency is conveniently improved, and the problems that the fixing process and the unlocking process of a traditional main reducer ground oil seal device are both under a big arm, and the space is narrow are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of main reducer oil seal equipment, in particular to a ground oil seal device for a helicopter main reducer. Background Art

[0002] During the storage period, in order to prevent the internal corrosion of the main reducer and reduce the reliability of the main reducer, the main reducer should be cleaned, lubricated and oil-sealed after a certain storage period. When the main reducer in stock is oil-sealed, the main reducer needs to have a certain speed to complete the oil sealing process. The original oil sealing equipment cannot meet the requirements of the ground oil sealing of the helicopter main reducer.

[0003] The existing helicopter main reducer ground oil seal device has a relatively simple structure when in use. Usually, after the main reducer is fixed, the main rotating wall is used to drive the main reducer to rotate so that it reaches a predetermined speed. The fixing process and the unlocking process are both under the boom, and the space is relatively narrow, which affects the fixing efficiency. In addition, the main reducer fixed under the rotating arm is difficult to move and difficult to replace. Utility Model Content

[0004] The main purpose of the utility model is to provide a ground oil seal device for a helicopter main reducer, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A ground oil seal device for a helicopter main reducer comprises a mechanical arm fixing platform and a fixing seat, wherein a rotating arm is installed at a central position at the bottom of the mechanical arm fixing platform, the fixing seat is installed at a central position below the mechanical arm fixing platform, and a mounting mechanism is arranged inside the fixing seat;

[0007] The mounting mechanism includes a connecting block, and the connecting block is located inside the fixing seat, the top of the connecting block is movably connected with the mounting block, a mounting groove is provided at the center of the top of the mounting block, a main reducer body is mounted inside the mounting groove, the top of the main reducer body is connected to the bottom end of the rotating arm, a hydraulic cylinder 1 is mounted at the top of the mounting block and near both sides of the mounting groove, the bottom ends of the push rods of the two hydraulic cylinders 1 close to each other are fixedly connected with fixing plates, and the opposite surfaces of the two fixing plates are in contact with the lower outer ring of the main reducer body.

[0008] As a further solution of the utility model, a slide rod is slidably connected through the upper and lower ends of the installation block near the four corners, and the bottom end of the slide rod is fixedly connected to the top end of the connection block.

[0009] As a further solution of the utility model, self-locking casters are installed at the four corners of the bottom end of the connecting block, and a handle is fixedly installed at the front position of the top end of the connecting block.

[0010] As a further solution of the utility model, a limiting groove is provided at an upper position at the rear end of the connecting block, and a limiting block matching the limiting groove is fixedly connected to an inner rear position of the fixing seat.

[0011] As a further solution of the utility model, push plates matching the mounting blocks are movably installed on both sides of the interior of the fixed seat and near the front and rear ends. Rubber anti-slip stickers are fixedly attached to the top ends of the four push plates, and the top surface of the rubber anti-slip stickers contacts the bottom surface of the positioning slot.

[0012] As a further solution of the utility model, a hydraulic cylinder 2 matching the push plate is installed inside the fixing seat, and the top end of the hydraulic cylinder 2 is fixedly connected to the bottom end of the push plate.

[0013] As a further solution of the utility model, the top end of the mounting block is fixedly connected to positioning rods at four corners, and the lower interior of the fixing seat is provided with positioning slots matching the positioning rods.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model cooperates with each other by arranging the installation mechanism, the rotating arm, the main reducer body and the fixing seat. After the installation mechanism is initially fixed, it can be moved under the rotating arm, and then the second hydraulic cylinder is extended to drive the push plate to lift the installation block, so that the top of the main reducer body is connected with the rotating arm. The main reducer body is fixed throughout the whole process, not all at the rotating arm, so that the fixing operation is not affected by the narrow space, and the fixing efficiency is improved.

[0016] By setting the connecting block and the self-locking casters in conjunction with the main reducer body, after the oil sealing of the main reducer body is completed, the main reducer body can be pulled out from the bottom of the rotating arm by pulling the handle, and then the new main reducer body is moved to the bottom of the rotating arm for oil sealing, so as to avoid direct disassembly at the rotating arm. The main reducer body can be disassembled away from the rotating arm, thereby improving the use effect and preventing the main reducer body after the oil sealing from affecting the subsequent oil seal processing, so as to facilitate replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a ground oil seal device for a helicopter main reducer according to the utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of a fixing seat in the overall structure of a ground oil seal device for a main reducer of a helicopter according to the utility model;

[0019] Figure 3 The utility model is a structural schematic diagram of a mounting mechanism in a ground oil seal device for a helicopter main reducer.

[0020] In the figure: 1. Robot arm fixing platform; 2. Rotating arm; 3. Fixing seat; 4. Mounting mechanism; 5. Connecting block; 6. Mounting block; 7. Sliding rod; 8. Hydraulic cylinder one; 9. Fixing plate; 10. Main reducer body; 11. Positioning rod; 12. Self-locking caster; 13. Handle; 14. Push plate; 15. Hydraulic cylinder two; 16. Positioning slot. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-3 As shown, a ground oil seal device for a helicopter main reducer comprises a mechanical arm fixing platform 1 and a fixing seat 3, wherein a rotating arm 2 is installed at the center of the bottom of the mechanical arm fixing platform 1, the fixing seat 3 is installed at the center below the mechanical arm fixing platform 1, and a mounting mechanism 4 is arranged inside the fixing seat 3;

[0023] The mounting mechanism 4 includes a connecting block 5, and the connecting block 5 is located inside the fixing seat 3, the top of the connecting block 5 is movably connected with a mounting block 6, a mounting groove is provided at the center of the top of the mounting block 6, a main reducer body 10 is installed inside the mounting groove, the top of the main reducer body 10 is connected to the bottom end of the rotating arm 2, a hydraulic cylinder 8 is installed at the top of the mounting block 6 and near both sides of the mounting groove, the bottom ends of the push rods of the two hydraulic cylinders 8 close to each other are fixedly connected with a fixing plate 9, and the opposite surfaces of the two fixing plates 9 are in contact with the lower outer ring of the main reducer body 10.

[0024] In this embodiment, a slide rod 7 is slidably connected to the upper and lower ends of the mounting block 6 near the four corners, and the bottom end of the slide rod 7 is fixedly connected to the top of the connecting block 5. By setting the slide rod 7, the mounting block 6 can be prevented from deflecting when moving, thereby improving the activity stability of the mounting block 6.

[0025] In this embodiment, self-locking casters 12 are installed at the four corners of the bottom end of the connecting block 5, and a handle 13 is fixedly installed at the front position of the top end of the connecting block 5. The handle 13 provides a gripping function, which is convenient for people to hold. Through the self-locking casters 12, it is convenient to push the connecting block 5 to move, and it is convenient to pull the connecting block 5 out of the interior of the fixing seat 3 for easy replacement.

[0026] In this embodiment, a limiting groove is provided at the upper rear end of the connecting block 5, and a limiting block matching the limiting groove is fixedly connected to the inner rear end of the fixing seat 3. The rear end of the connecting block 5 contacts the limiting block inside the fixing seat 3 to ensure that the connecting block 5 is moved to a suitable position, after which the self-locking caster 12 can be self-locked to prevent the connecting block 5 from moving again.

[0027] In this embodiment, push plates 14 that match the mounting block 6 are movably installed on both sides of the interior of the fixing seat 3 and at the front and rear ends. Rubber anti-skid stickers are fixedly attached to the top ends of the four push plates 14, and the top surfaces of the rubber anti-skid stickers are in contact with the bottom surfaces of the positioning slots 16. The provision of the rubber anti-skid stickers can increase the friction between the push plates 14 and the mounting block 6, while reducing the wear of the push plates 14 on the mounting block 6.

[0028] In this embodiment, a hydraulic cylinder 2 15 matching the push plate 14 is installed inside the fixed seat 3, and the top of the hydraulic cylinder 2 15 is fixedly connected to the bottom of the push plate 14. The push rod of the hydraulic cylinder 2 15 extends upward to drive the push plate 14 to move upward, which is convenient for the mounting block 6 to lift up. Then the mounting block 6 lifts the main reducer body 10 and connects it to the rotating arm 2, which is convenient for fixing the main reducer body 10.

[0029] In this embodiment, the top end of the mounting block 6 is fixedly connected to a positioning rod 11 at the four corners, and a positioning slot 16 matching the positioning rod 11 is provided at the lower inner position of the fixing seat 3. The positioning rod 11 on the mounting block 6 is inserted into the positioning slot 16, which can play a role in positioning and fixing, thereby preventing the mounting block 6 from tilting and causing the main reducer body 10 to tilt.

[0030] It should be noted that the utility model is a ground oil seal device for a helicopter main reducer. When in use, first, the main reducer body 10 after cleaning and oiling can be fixed to the mounting groove on the mounting block 6 as needed, and the push rod of the hydraulic oil cylinder 8 is extended to drive the fixing plate 9 to perform secondary reinforcement on the main reducer body 10 as needed. Since the mounting block 6 is movably mounted on the connecting block 5, a self-locking caster 12 is installed at the bottom of the connecting block 5, and the size of the connecting block 5 matches the size of the fixing seat 3, after the main reducer body 10 is fixed, the handle 13 can be held to push the connecting block 5 into the fixing seat 3;

[0031] When the rear end of the connecting block 5 contacts the limit block in the fixing seat 3, the self-locking caster 12 is self-locked, and then the hydraulic cylinder 15 is started. The push rod of the hydraulic cylinder 15 extends upward, driving the push plate 14 to move upward, lifting the mounting block 6, and at the same time making the positioning rod 11 on the mounting block 6 snap into the positioning slot 16, playing a role of positioning and fixing, preventing the mounting block 6 from tilting. At the same time, after the mounting block 6 is fixed, the main reducer body 10 is lifted to a suitable position, so that the swivel arm 2 can be controlled to move downward, and the swivel arm 2 joint is connected to the top of the main reducer body 10. The fixing process is not directly carried out at the bottom of the swivel arm 2 to avoid the small space affecting the fixing. After the swivel arm 2 is firmly connected to the main reducer body 10, the top of the main reducer body 10 can be driven to rotate by rotating the swivel arm 2, so that the main reducer body 10 reaches a suitable speed for oil sealing and performs oil sealing;

[0032] And during the oil sealing process of the main reducer body 10, another main reducer body 10 can be pre-estimated according to the above steps, so that after the oil sealing of the main reducer body 10 is completed, the swivel arm 2 can be closed again, and then after the main reducer body 10 stops rotating, the push rod of the hydraulic cylinder 2 15 can be retracted to drive the mounting block 6 to descend, so that the positioning rod 11 is disengaged from the positioning slot 16, and after the mounting block 6 is reset, the self-locking caster 12 can be opened for self-locking, and then the handle 13 is held to pull out the self-locking caster 12, so as to move the main reducer body 10 out of the bottom of the swivel arm 2, and then the pre-estimated main reducer body 10 can be fixed to the bottom of the swivel arm 2 again according to the above steps for oil sealing, which can improve the processing efficiency, and then the fixing plate 9 can be moved away from the main reducer body 10 after the previous oil sealing is completed as needed, and the main reducer body 10 can be removed from the mounting groove for storage, so that the connecting block 5 can be reused later.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A ground oil seal device for a helicopter main reducer, comprising a mechanical arm fixing platform (1) and a fixing seat (3), wherein a rotating arm (2) is installed at a central position at the bottom of the mechanical arm fixing platform (1), and the fixing seat (3) is installed at a central position below the mechanical arm fixing platform (1), characterized in that: The fixing seat (3) is provided with a mounting mechanism (4) inside; The mounting mechanism (4) comprises a connecting block (5), and the connecting block (5) is located inside the fixing seat (3), the top of the connecting block (5) is movably connected to a mounting block (6), a mounting groove is provided at the center of the top of the mounting block (6), a main reducer body (10) is installed inside the mounting groove, the top of the main reducer body (10) is connected to the bottom of the rotating arm (2), a hydraulic cylinder (8) is installed at the top of the mounting block (6) and near the two sides of the mounting groove, the bottom ends of the push rods of the two hydraulic cylinders (8) are fixedly connected to a fixing plate (9), and the opposite surfaces of the two fixing plates (9) are in contact with the lower outer ring of the main reducer body (10).

2. A helicopter main reducer ground oil seal device according to claim 1, characterized in that: A slide rod (7) is slidably connected to the upper and lower ends of the installation block (6) at the four corners, and the bottom end of the slide rod (7) is fixedly connected to the top end of the connection block (5).

3. A helicopter main reducer ground oil seal device according to claim 1, characterized in that: Self-locking casters (12) are installed at the four corners of the bottom end of the connection block (5), and a handle (13) is fixedly installed at the front position of the top end of the connection block (5).

4. A helicopter main reducer ground oil seal device according to claim 1, characterized in that: A limiting groove is provided at an upper position at the rear end of the connection block (5), and a limiting block matching the limiting groove is fixedly connected to a rear position inside the fixing seat (3).

5. A helicopter main reducer ground oil seal device according to claim 1, characterized in that: Push plates (14) that match the mounting block (6) are movably mounted on both sides of the interior of the fixing seat (3) and close to the front and rear ends. Rubber anti-skid stickers are fixedly attached to the top ends of the four push plates (14), and the top surfaces of the rubber anti-skid stickers are in contact with the bottom surfaces of the positioning slots (16).

6. A helicopter main reducer ground oil seal device according to claim 5, characterized in that: A second hydraulic cylinder (15) matching the push plate (14) is installed inside the fixing seat (3), and the top end of the second hydraulic cylinder (15) is fixedly connected to the bottom end of the push plate (14).

7. A helicopter main reducer ground oil seal device according to claim 5, characterized in that: The top end of the mounting block (6) is fixedly connected to positioning rods (11) at four corners, and a positioning slot (16) matching the positioning rod (11) is provided at a lower position inside the fixing seat (3).

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