A plunger assembly for use in aviation hydraulic pumps

Abstract

This utility model discloses a plunger assembly for aviation hydraulic pumps, belonging to the field of axial plunger pump technology. It includes: a swashplate body with multiple recessed grooves on its surface, arranged in a circular array and extending to the side of the swashplate body; multiple ball seat mechanisms connected to the recessed grooves of the swashplate body; and multiple plunger bodies located on one side of the swashplate body, connected to the ball seat mechanisms via ball head bodies. This utility model, by providing recessed grooves on the swashplate body for installing ball seat mechanisms, allows for modular expansion installation of the plunger bodies on the swashplate body simply by locking the corresponding ball head bodies using the ball seat mechanisms. This simplifies the installation steps of the plunger assembly and improves installation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of axial piston pump technology, and particularly relates to a piston assembly used in aviation hydraulic pumps. Background Technology

[0002] Axial piston pumps are hydraulic power components with high pressure, high efficiency, compact structure, and wide speed range as their core advantages. Their performance is perfectly suited to the stringent requirements of the aviation industry, making them one of the core power sources of aviation hydraulic systems. They are widely used in key subsystems such as flight control, landing gear, engine accessories, and weapon systems.

[0003] Currently, the slippers are assembled with the ball-head plungers using a spinning process. When assembling the plunger pump, multiple slippers with plungers are snapped into the retaining ring, and then the whole assembly is pushed into the plunger pump to contact the swashplate. This means that the assembly and maintenance of the plungers must be carried out together with the slippers, which is not convenient for the plunger assembly to be installed in a modular fashion. Utility Model Content

[0004] The purpose of this utility model is to provide a plunger assembly for aviation hydraulic pumps in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a plunger assembly for an aviation hydraulic pump, comprising:

[0006] The swash plate body has multiple recessed grooves on its surface, which are arranged in a circular array and extend to the side of the swash plate body.

[0007] Multiple sets of ball seat mechanisms are respectively connected to multiple sinkers in the swashplate body;

[0008] Multiple plunger bodies are located on one side of the swashplate body, and the multiple plunger bodies are connected to the ball seat mechanism through a ball head body.

[0009] As a further description of the above technical solution:

[0010] A rocker arm is rotatably connected to the plunger body, and the ball head body is located at the end of the rocker arm.

[0011] As a further description of the above technical solution:

[0012] The ball seat mechanism includes a first fixed seat and a second fixed seat disposed in the sinking groove. The first fixed seat and the second fixed seat are both connected to the swashplate body by fixing bolts. Both the first fixed seat and the second fixed seat are provided with hemispherical grooves. The two hemispherical grooves are connected to each other and wrap around the ball head body.

[0013] As a further description of the above technical solution:

[0014] Both the first and second fixed seats have clearance slots that connect to the hemispherical groove. The two clearance slots are connected to each other and form an oil collection groove between them and the bottom wall of the sinking groove.

[0015] As a further description of the above technical solution:

[0016] The second fixed base is provided with an arc-shaped surface, which coincides with the side surface of the swashplate body.

[0017] As a further description of the above technical solution:

[0018] The height of the first fixing seat and the height of the second fixing seat are both the same as the depth of the sinking trough.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. In this utility model, the swash plate body is provided with a recessed groove for the installation of the ball seat mechanism. The ball head body corresponding to the plunger body can be locked by the ball seat mechanism to complete the assembly expansion installation of the plunger body on the swash plate body, which simplifies the installation steps of the plunger assembly and improves the installation efficiency.

[0021] 2. In this utility model, the first fixing seat is pre-installed on the swashplate body using fixing bolts. The ball head body only needs to be inserted into the two hemispherical grooves, and the second fixing seat is locked on the swashplate body using fixing bolts to complete the assembly installation between the plunger body and the swashplate body.

[0022] 3. In this utility model, the oil collection groove is provided so that the ball head body is lubricated during rotation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a plunger assembly used in aviation hydraulic pumps.

[0024] Figure 2 This is an exploded view of a plunger assembly used in aviation hydraulic pumps.

[0025] Figure 3 A cross-sectional view of a plunger assembly used in an aviation hydraulic pump. Figure 1 .

[0026] Figure 4 A cross-sectional view of a plunger assembly used in an aviation hydraulic pump. Figure 2 .

[0027] Legend:

[0028] 1. Inclined plate body; 2. Sinking groove; 3. Ball seat mechanism; 31. First fixed seat; 32. Second fixed seat; 4. Plunger body; 5. Ball head body; 6. Rocker arm; 7. Fixing bolt; 8. Hemispherical groove; 9. Air clearance groove; 10. Oil collection groove; 11. Arc-shaped surface. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-4 This utility model provides a technical solution: a plunger assembly applied to an aviation hydraulic pump, comprising:

[0031] The swash plate body 1 has multiple recessed grooves 2 on its surface, which are arranged in a circular array and extend to the side of the swash plate body 1.

[0032] Multiple ball seat mechanisms 3 are respectively connected to multiple sinkers 2 in the swashplate body 1;

[0033] Multiple plunger bodies 4 are located on one side of the swashplate body 1, and the multiple plunger bodies 4 are connected to the ball seat mechanism 3 through ball head bodies 5;

[0034] A rocker arm 6 is rotatably connected to the plunger body 4, and the ball head body 5 is located at the end of the rocker arm 6;

[0035] The ball seat mechanism 3 includes a first fixed seat 31 and a second fixed seat 32 disposed in the sinking groove 2. The first fixed seat 31 and the second fixed seat 32 are both connected to the swashplate body 1 by fixing bolts 7. The first fixed seat 31 and the second fixed seat 32 are both provided with hemispherical grooves 8. The two hemispherical grooves 8 are connected to each other and wrap around the ball head body 5. The first fixed seat 31 is pre-installed on the swashplate body 1 by fixing bolts 7. The ball head body 5 only needs to be inserted into the two hemispherical grooves 8, and the second fixed seat 32 is locked on the swashplate body 1 by fixing bolts 7 to complete the assembly installation between the plunger body 4 and the swashplate body 1.

[0036] Both the first fixed seat 31 and the second fixed seat 32 are provided with clearance grooves 9 that communicate with the hemispherical groove 8. The two clearance grooves 9 are connected to each other and form an oil collection groove 10 between them and the bottom wall of the sinking groove 2. The oil collection groove 10 is provided so that the ball head body 5 is lubricated during rotation.

[0037] The second fixing seat 32 is provided with an arc-shaped surface 11, which coincides with the side surface of the swashplate body 1;

[0038] The height of the first fixing seat 31 and the height of the second fixing seat 32 are the same as the depth of the sinking trough 2.

[0039] Working principle: First, prepare the plunger body 4, and connect the rocker arm 6 to the plunger body 4 through a pin. Prepare multiple plunger bodies 4. Second, insert the first fixing seat 31 into the sinker groove 2 and fix it to the swashplate body 1 with fixing bolts 7. Repeat the above operation to install multiple first fixing seats 31 in sequence. Next, pick up the plunger body 4 and insert the ball head into the hemispherical groove 8 of the first fixing seat 31. Insert the second fixing seat 32 into the sinker groove 2 so that the hemispherical groove 8 of the second fixing seat 32 moves closer to the ball head body 5. Pour lubricant into the clearance groove 9. Then, insert the ball head body 5 into the hemispherical groove 8 of the second fixing seat 32 and fix the second fixing seat 32 to the swashplate body 1 with fixing bolts 7. At this time, the lubricant fills the oil collection groove 10. Repeat the above operation to install multiple plunger bodies 4 in sequence. Finally, when the ball head body 5 rotates in the hemispherical groove 8, the lubricant will be applied to the surface of the ball head body 5.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plunger assembly used in an aviation hydraulic pump, characterized in that: include: The swash plate body (1) has multiple sinking grooves (2) on its surface. The multiple sinking grooves (2) are arranged in a ring array and extend to the side of the swash plate body (1). Multiple ball seat mechanisms (3) are respectively connected to multiple sinkers (2) of the swashplate body (1); Multiple plunger bodies (4) are located on one side of the swashplate body (1), and the multiple plunger bodies (4) are connected to the ball seat mechanism (3) through the ball head body (5). A rocker arm (6) is rotatably connected to the plunger body (4), and the ball head body (5) is located at the end of the rocker arm (6); The ball seat mechanism (3) includes a first fixed seat (31) and a second fixed seat (32) disposed in the sinking groove (2). The first fixed seat (31) and the second fixed seat (32) are both connected to the swashplate body (1) by fixing bolts (7). The first fixed seat (31) and the second fixed seat (32) are both provided with hemispherical grooves (8). The two hemispherical grooves (8) are connected to each other and wrap around the ball head body (5).

2. A plunger assembly for use in an aircraft hydraulic pump as defined in claim 1, wherein, Both the first fixed seat (31) and the second fixed seat (32) are provided with a clearance groove (9) that connects to the hemispherical groove (8). The two clearance grooves (9) are connected to each other and form an oil collection groove (10) between them and the bottom wall of the sinking groove (2).

3. A plunger assembly for use in an aviation hydraulic pump according to claim 2, characterized in that, The second fixed base (32) is provided with an arc-shaped surface (11), which coincides with the side of the swashplate body (1).

4. A plunger assembly for an aviation hydraulic pump according to claim 3, characterized in that, The height of the first fixing seat (31) and the height of the second fixing seat (32) are the same as the depth of the sinking trough (2).

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