Hydraulic protection structure of servo actuator

Abstract

The hydraulic protection structure of the servo actuator comprises a connecting piece and a moving block, grooves are symmetrically formed in one end of the connecting piece, balls are connected in the grooves in a sliding mode, a fixed clamping block is connected to one side of each ball in a penetrating mode in a sliding mode, the fixed clamping block is arranged in an L shape, and the moving block is arranged in the fixed clamping block. One side of the fixed clamping block is fixedly connected with a connecting rod, one end of the connecting rod is slidably connected with a movable clamping piece in a penetrating mode, one side of the movable clamping piece is fixedly connected with a spring, and one end of the connecting rod is in threaded connection with a butterfly nut in a penetrating mode. According to the utility model, the fixed clamping block is arranged, the spring is additionally arranged between the movable clamping piece and the butterfly nut, rigid connection is converted into flexible connection, the movable clamping piece can rotate around the fulcrum of the wedge-shaped slope and the fixed clamping block, and the design of the ball not only provides a space for angle deviation of the connecting piece, but also does not affect displacement measurement of the grating ruler. Therefore, the accuracy of test data can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic protection structures, in particular to a servo actuator hydraulic protection structure. Background Art

[0002] As an actuator, aerospace servo actuators participate in the transmission and control system. Other devices cannot replace their role in the aerospace field.

[0003] When the servo actuator is moving, the connector may be deformed, which will affect the accuracy of the measurement data. Once the measurement data deviates, it will affect the calculation of subsequent data, which will cause overall data errors. Calculation errors are fatal problems in the aerospace field. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A servo actuator hydraulic protection structure comprises a connecting plate and a moving block, wherein one end of the connecting plate is symmetrically provided with a groove, a ball is slidably connected in the groove, one side of the ball is slidably connected with a fixed clamping block in a through-shape, the fixed clamping block is arranged in an L-shape, one side of the fixed clamping block is fixedly connected to a connecting rod, one end of the connecting rod is slidably connected with a movable clamping plate in a through-shape, one side of the movable clamping plate is fixedly connected to a spring, and one end of the connecting rod is threadedly connected with a butterfly nut in a through-shape.

[0007] Preferably, one end of the connecting rod is fixedly connected to one side of the fixed clamping block in a through-shape, and one end of the connecting rod is fixedly connected to the fixed block.

[0008] Preferably, one of the connecting plates is provided with a through hole, and a movable cylinder is fixedly connected to the inner wall of the through hole.

[0009] Preferably, one side of the fixing clamp block is bolted to a fixing plate, and one side of the fixing plate is bolted to a fixing rod.

[0010] Preferably, there are two moving blocks, a rotating rod is rotatably connected between the moving blocks, and a connecting ring is rotatably connected to the middle position of the rotating rod.

[0011] Preferably, one end of the connecting ring is fixedly connected to a threaded rod, and one end of the threaded rod is threadedly connected to a hexagonal nut in a through-shaped manner.

[0012] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0013] 1. The utility model is provided with a fixed clamp block, and the movable clamp piece can rotate around the wedge slope and the fulcrum of the fixed clamp block. The design of the ball not only provides space for the angle deviation of the connecting piece but also does not affect the measurement of the displacement by the grating ruler, so as to ensure the accuracy of the test data.

[0014] 2. A threaded rod is provided in the utility model, and the position of the connecting piece can be controlled by adjusting the hexagonal nut on the threaded rod, so that the test can be adjusted according to different scenarios to obtain more complete data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of part of the hydraulic structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the protection structure of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the connecting piece of the utility model.

[0018] Figure numerals: 1. moving block; 2. rotating rod; 3. connecting ring; 4. threaded rod; 5. hexagonal nut; 6. connecting plate; 7. ball; 8. fixed clamp block; 9. connecting rod; 10. spring; 11. movable clamp; 12. fixed block; 13. butterfly nut; 14. fixed plate; 15. fixed rod; 16. moving cylinder; 17. through hole; 18. groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0020] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0021] A servo actuator hydraulic protection structure provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0022] Combination Figure 1-3As shown, the utility model provides a servo actuator hydraulic protection structure, including a connecting piece 6 and a moving block 1, one end of the connecting piece 6 is symmetrically provided with a groove 18, a ball 7 is slidably connected in the groove 18, one side of the ball 7 is slidably connected with a fixed clamping block 8, the fixed clamping block 8 is L-shaped, one side of the fixed clamping block 8 is fixedly connected with a connecting rod 9, one end of the connecting rod 9 is slidably connected with a movable clamping piece 11, one side of the movable clamping piece 11 is fixedly connected with a spring 10, and one end of the connecting rod 9 is threadedly connected with a butterfly nut 13;

[0023] One end of the connecting rod 9 is fixedly connected to one side of the fixed clamping block 8 in a through shape, one end of the connecting rod 9 is fixedly connected to the fixed block 12, a through hole 17 is opened on one side of the connecting plate 6, a moving cylinder 16 is fixedly connected to the inner wall of the through hole 17, one side of the fixed clamping block 8 is bolted to the fixed plate 14, and one side of the fixed plate 14 is bolted to the fixing rod 15.

[0024] In the first embodiment, a grating ruler is used as a displacement sensor. Since the grating ruler is a prior art, it will not be described in detail. During the installation and loading process, the connecting parts may be deformed, which affects the measurement. Therefore, when the movable clamp 11 cooperates with the fixed clamp block 8, the connecting piece 6 is clamped by the ball 7. At the same time, a spring 10 is provided between the movable clamp 11 and the butterfly nut 13, thereby changing the rigid connection into a flexible connection. Moreover, the side wall of the movable clamp 11 is inclined, so it can be rotated with the protruding point of the fixed clamp block 8 as the guide. In this way, space can be reserved for the angle of the connecting piece 6 without affecting the measurement. The function of the spring 10 is that before the connecting piece 6 is deformed, the spring 10 deforms first, effectively avoiding the deformation of the connecting piece 6. Due to the reaction force of the spring 10, when the connecting piece 6 restores its shape, the movable clamp 11 can be reset in time. In this way, the elastic deformation and slight rotation of the connecting piece 6 will not affect the grating ruler, thereby ensuring the accuracy of the measurement data.

[0025] There are two moving blocks 1, and a rotating rod 2 is rotatably connected between the moving blocks 1. A connecting ring 3 is rotatably connected to the middle position of the rotating rod 2. One end of the connecting ring 3 is fixedly connected to a threaded rod 4, and one end of the threaded rod 4 is threadedly connected to a hexagonal nut 5 in a through-shaped manner.

[0026] In the second embodiment, the position of the connecting piece 6 can be changed by adjusting the hexagonal nut 5, so that simulation tests can be performed according to various scenarios, thereby obtaining various data for comprehensive calculation, which can ensure the accuracy of the test data.

[0027] The working principle and use process of the utility model are as follows: when testing, before the connecting piece 6 is deformed, the spring 10 is deformed first, which effectively prevents the connecting piece 6 from being deformed. Due to the reaction force of the spring 10, when the connecting piece 6 recovers its shape, the movable clamping piece 11 can be reset in time. The contact part between the movable clamping piece 11 and the fixed clamping block 8 is processed into a wedge shape and installed in the groove of the fixed clamping block 8. The two are connected by a connecting rod 9. A spring 10 is added between the movable clamping piece 11 and the butterfly nut 13 to convert the rigid connection into a flexible connection.

[0028] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A servo actuator hydraulic protection structure, comprising a connecting piece (6) and a moving block (1), characterized in that: A groove (18) is symmetrically formed at one end of the connecting piece (6), a ball (7) is slidably connected in the groove (18), a fixed clamp (8) is slidably connected to one side of the ball (7), the fixed clamp (8) is L-shaped, a connecting rod (9) is fixedly connected to one side of the fixed clamp (8), a movable clamp (11) is slidably connected to one end of the connecting rod (9), a spring (10) is fixedly connected to one side of the movable clamp (11), and a butterfly nut (13) is threadedly connected to one end of the connecting rod (9).

2. A servo actuator hydraulic protection structure according to claim 1, characterized in that: One end of the connecting rod (9) is fixedly connected to one side of the fixed clamping block (8) in a through-shape, and one end of the connecting rod (9) is fixedly connected to the fixed block (12).

3. The servo actuator hydraulic protection structure according to claim 1, characterized in that: A through hole (17) is opened on one of the connecting pieces (6), and a movable cylinder (16) is fixedly connected to the inner wall of the through hole (17).

4. The servo actuator hydraulic protection structure according to claim 1, characterized in that: One side of the fixing clamp block (8) is bolted to a fixing plate (14), and one side of the fixing plate (14) is bolted to a fixing rod (15).

5. The servo actuator hydraulic protection structure according to claim 1, characterized in that: There are two moving blocks (1), a rotating rod (2) is rotatably connected between the moving blocks (1), and a connecting ring (3) is rotatably connected at the middle position of the rotating rod (2).

6. A servo actuator hydraulic protection structure according to claim 5, characterized in that: One end of the connecting ring (3) is fixedly connected to a threaded rod (4), and one end of the threaded rod (4) is threadedly connected to a hexagonal nut (5) in a through-shaped manner.

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