Marine hydraulic rotary actuator

Abstract

The utility model discloses a marine hydraulic rotary executive device, include: hydraulic structure, the inner wall rotation of hydraulic structure is connected with rotary structure, the utility model relates to hydraulic rotary technical field. The rotary structure and hydraulic structure, through the sliding ring embedding in the execution block ring groove of the upper and lower sides of gear, the steel ball of sliding ring inner wall will sliding friction of sliding ring and ring groove convert into rolling friction, reduce the friction resistance of gear rotation greatly, reduce mechanical wear and tear, the sliding contact of the ball bearing of the bottom of rotary plate and the execution block top outer wall, both provide stable support for rotary plate, and further reduce rotary friction, through the meshing transmission of gear and gear rod of hydraulic oil drive piston and drive, will linear motion high -efficient conversion is rotary motion.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic rotation technology, specifically a marine hydraulic rotation actuator. Background Technology

[0002] In the field of ship operations, equipment relies on rotary actuators to perform core actions. Among them, hydraulic rotary actuators have become the mainstream application due to their stable power output and strong load-bearing capacity.

[0003] In existing devices, the gears and actuators mostly use a direct sliding contact engagement method. The sliding friction resistance generated during rotation is relatively large, which not only easily leads to rapid wear of mechanical parts and shortens the service life of the device, but also causes problems such as gear rotation jamming and vibration. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a marine hydraulic rotary actuator, which solves the problem that existing devices often use direct sliding contact between gears and actuator blocks, leading to rapid wear of mechanical parts.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A marine hydraulic rotary actuator includes: a hydraulic structure, the inner wall of which is rotatably connected to a rotary structure; the hydraulic structure includes an actuator block, the inner wall of which is symmetrically provided with sliding cavities, the inner wall of which is symmetrically fixedly connected with guide rods, the outer wall of which is symmetrically provided with threaded holes, the outer wall of which is symmetrically fixedly connected with sealing gaskets, the inner wall of which begins to have U-shaped holes, the inner wall of which begins to have rotating grooves, and the inner wall of which is symmetrically provided with annular grooves.

[0006] Preferably, the sealing gasket is disposed outside the threaded hole, the inside of the threaded hole communicates with the inside of the sliding cavity, the inside of the U-shaped hole communicates with the inside of the sliding cavity, and the two sliding cavities are connected through the U-shaped hole, which can coordinate the flow of oil and ensure effective pressure transmission.

[0007] Preferably, a drive rack is provided inside the sliding cavity, and pistons are symmetrically fixedly connected to the outer wall of the drive rack, with the pistons located at both ends of the drive rack, and sealing rings are fixedly connected to the outer wall of the pistons.

[0008] Preferably, the outer wall of the sealing ring is slidably connected to the inner wall of the sliding cavity, and the inner wall of the piston is slidably connected to the outer wall of the guide rod. The guide rod provides sliding guidance for the piston to prevent rotational deviation.

[0009] Preferably, the rotary structure includes a gear, a slip ring is symmetrically fixedly connected to the outer wall of the gear, a steel ball is rotatably connected to the inner wall of the slip ring, a connecting shaft is fixedly connected to the outer wall of the top of the gear, a rotating plate is fixedly connected to the outer wall of the top of the connecting shaft, a ball is rotatably connected to the inner wall of the bottom of the rotating plate, and a positioning pin is fixedly connected to the outer wall of the top of the rotating plate.

[0010] Preferably, the slip ring is disposed on the upper and lower sides of the gear, the outer wall of the slip ring and the steel ball is slidably connected to the inner wall of the ring groove, the outer wall of the gear is slidably connected to the inner wall of the rotating groove, the outer wall of the connecting shaft is rotatably connected to the inner wall of the top of the actuator block, the outer wall of the ball is slidably connected to the outer wall of the top of the actuator block, the outer wall of the gear meshes with the outer walls of the drive racks on both sides, the drive racks perform linear reciprocating motion under the drive of the piston, and their outer walls mesh with the gears of the rotary structure. Through meshing transmission, the linear motion is converted into the rotary motion of the gear.

[0011] (III) Beneficial Effects This utility model provides a marine hydraulic slewing actuator. It has the following advantages: (i) The rotary structure uses slip rings on the upper and lower sides of the gear to be embedded in the ring groove of the actuator block. The steel balls on the inner wall of the slip ring convert the sliding friction between the slip ring and the ring groove into rolling friction, which greatly reduces the frictional resistance when the gear rotates and reduces mechanical wear. The balls at the bottom of the rotating plate slide in contact with the outer wall of the top of the actuator block, which not only provides stable support for the rotating plate, but also further reduces the rotational friction, reduces the jamming and shaking in the entire rotation process, and ensures stable movement.

[0012] (ii) This hydraulic structure drives the piston and drive rack to perform linear reciprocating motion through hydraulic oil, and then through the meshing transmission of rack and gear, the linear motion is efficiently converted into rotary motion. There is no significant energy loss in the power transmission process, ensuring that high-pressure hydraulic energy is stably converted into rotary mechanical energy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the structure of the execution block of this utility model; Figure 4 This is a schematic diagram of the hydraulic structure of this utility model; Figure 5 This is a schematic diagram of the structure of the drive rack of this utility model; Figure 6 This is a plan view of the interior of this utility model; Figure 7 This is a schematic diagram of the rotating structure of this utility model; Figure 8 This is a planar schematic diagram of the rotating structure of this utility model.

[0014] In the diagram: 1. Hydraulic structure; 11. Actuator block; 12. Slide cavity; 121. Guide rod; 13. Threaded hole; 14. Sealing gasket; 15. U-shaped hole; 16. Rotary groove; 17. Annular groove; 18. Drive rack; 19. Piston; 191. Sealing ring; 2. Rotary structure; 21. Gear; 22. Slip ring; 23. Steel ball; 24. Connecting shaft; 25. Rotary plate; 26. Ball bearing; 27. Locating pin. Detailed Implementation

[0015] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-8 This utility model provides a technical solution: a marine hydraulic rotary actuator, comprising: a hydraulic structure 1, with a rotary structure 2 rotatably connected to the inner wall of the hydraulic structure 1; the hydraulic structure 1 includes an actuator block 11, with symmetrically opened sliding cavities 12 on the inner wall of the actuator block 11, guide rods 121 symmetrically fixedly connected to the inner wall of the sliding cavities 12, threaded holes 13 symmetrically opened on the outer wall of the side of the actuator block 11, sealing gaskets 14 symmetrically fixedly connected to the outer wall of the side of the actuator block 11, a U-shaped hole 15 at the beginning of the inner wall of the actuator block 11, a rotating groove 16 at the beginning of the inner wall of the actuator block 11, and annular grooves 17 symmetrically opened on the inner wall of the rotating groove 16.

[0017] The sealing gasket 14 is set outside the threaded hole 13. The inside of the threaded hole 13 is connected to the inside of the slide cavity 12. The inside of the U-shaped hole 15 is connected to the inside of the slide cavity 12. The two slide cavities 12 are connected through the U-shaped hole 15, which can coordinate the flow of oil and ensure effective pressure transmission.

[0018] The sliding cavity 12 is provided with a drive rack 18. Pistons 19 are symmetrically fixedly connected to the outer wall of the drive rack 18, and the pistons 19 are located at both ends of the drive rack 18. A sealing ring 191 is fixedly connected to the outer wall of the piston 19.

[0019] The outer wall of the sealing ring 191 is slidably connected to the inner wall of the sliding cavity 12, and the inner wall of the piston 19 is slidably connected to the outer wall of the guide rod 121. The guide rod 121 provides sliding guidance for the piston 19 to prevent rotational deviation.

[0020] The rotary structure 2 includes a gear 21, a slip ring 22 is symmetrically fixedly connected to the outer wall of the gear 21, a steel ball 23 is rotatably connected to the inner wall of the slip ring 22, a connecting shaft 24 is fixedly connected to the outer wall of the top of the gear 21, a rotating plate 25 is fixedly connected to the outer wall of the top of the connecting shaft 24, a ball 26 is rotatably connected to the inner wall of the bottom of the rotating plate 25, and a positioning pin 27 is fixedly connected to the outer wall of the top of the rotating plate 25.

[0021] Slip ring 22 is disposed on the upper and lower sides of gear 21. The outer walls of slip ring 22 and steel ball 23 are slidably connected to the inner wall of ring groove 17. The outer wall of gear 21 is slidably connected to the inner wall of rotating groove 16. The outer wall of connecting shaft 24 is rotatably connected to the inner wall of the top of actuator block 11. The outer wall of ball 26 is slidably connected to the outer wall of the top of actuator block 11. The outer wall of gear 21 meshes with the outer walls of drive rack 18 on both sides. Drive rack 18 moves linearly reciprocating under the drive of piston 19. Its outer wall meshes with gear 21 of rotary structure 2. Through meshing transmission, linear motion is converted into rotary motion of gear 21.

[0022] In use, the external hydraulic system is connected to the hydraulic structure 1 and connected to the threaded hole 13 of the actuator 11. At the same time, the sealing gasket 14 provides a sealing effect, drives the internal rotation of the hydraulic structure 1, and drives the rotary structure 2 to rotate. The external hydraulic system inputs high-pressure hydraulic oil into the slide cavity 12 through the threaded hole 13 of the actuator block 11. The threaded hole 13 is connected to the slide cavity 12, which can realize the oil inlet and return control. After the hydraulic oil enters the slide cavity 12, it generates pressure on the piston 19 on the drive rack 18 on one side, pushing the sealing ring 191 on the piston 19 to slide along the inner wall of the slide cavity 12 and squeezing the hydraulic oil at the U-shaped hole 15, pushing the piston 19 on the drive rack 18 on the other side to slide synchronously. The guide rod 121 provides sliding guidance for the piston 19 to avoid rotational deviation. The sealing ring 191 on the outer wall of the piston 19 ensures the sealing of the slide cavity 12, prevents hydraulic oil leakage, and ensures effective pressure transmission. The two slide cavities 12 are connected through the U-shaped hole 15, which can coordinate the flow of oil and keep the movement of the two drive racks 18 synchronized. Driven by piston 19, the rack 18 performs linear reciprocating motion. Its outer wall meshes with the gear 21 of the rotary structure 2. Through meshing transmission, the linear motion is converted into the rotary motion of the gear 21. The slip rings 22 on the upper and lower sides of the gear 21 are embedded in the annular grooves 17 of the actuator block 11. The steel balls 23 on the inner wall of the slip ring 22 reduce the sliding friction between the slip ring 22 and the annular groove 17, ensuring that the gear 21 rotates smoothly in the rotary groove 16. When gear 21 rotates, it drives rotating plate 25 to rotate synchronously through connecting shaft 24 at the top. The positioning pin 27 at the top of rotating plate 25 is used to connect to external load and transmit rotation power to the load. The ball 26 at the bottom of rotating plate 25 slides in contact with the top outer wall of actuator block 11, providing support for rotating plate 25, reducing frictional resistance during rotation, and improving the rotational stability of the overall structure. When the external hydraulic system switches the oil flow direction, the hydraulic oil enters the slide cavity 12 from the threaded hole 13 on the other side, pushing the piston 19 and the drive rack 18 to move in opposite directions, thereby driving the gear 21 to rotate in the opposite direction, realizing the reverse action of the load.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine hydraulic rotary actuator, characterized in that, include: A hydraulic structure (1) has a rotary structure (2) rotatably connected to the inner wall of the hydraulic structure (1). The hydraulic structure (1) includes an actuator block (11). The inner wall of the actuator block (11) is symmetrically provided with a sliding cavity (12). The inner wall of the sliding cavity (12) is symmetrically fixedly connected with a guide rod (121). The outer wall of the side of the actuator block (11) is symmetrically provided with a threaded hole (13). The outer wall of the side of the actuator block (11) is symmetrically fixedly connected with a sealing gasket (14). The inner wall of the actuator block (11) begins to have a U-shaped hole (15). The inner wall of the actuator block (11) begins to have a rotating groove (16). The inner wall of the rotating groove (16) is symmetrically provided with annular grooves (17).

2. The marine hydraulic rotary actuator according to claim 1, characterized in that: The sealing gasket (14) is disposed outside the threaded hole (13), the interior of the threaded hole (13) is connected to the interior of the sliding cavity (12), and the interior of the U-shaped hole (15) is connected to the interior of the sliding cavity (12).

3. The marine hydraulic rotary actuator according to claim 1, characterized in that: The sliding cavity (12) is provided with a drive rack (18), and pistons (19) are symmetrically fixedly connected to the outer wall of the drive rack (18). The pistons (19) are located at both ends of the drive rack (18), and sealing rings (191) are fixedly connected to the outer wall of the pistons (19).

4. A marine hydraulic rotary actuator according to claim 3, characterized in that: The outer wall of the sealing ring (191) is slidably connected to the inner wall of the sliding cavity (12), and the inner wall of the piston (19) is slidably connected to the outer wall of the guide rod (121).

5. A marine hydraulic rotary actuator according to claim 1, characterized in that: The rotary structure (2) includes a gear (21), a slip ring (22) is symmetrically fixedly connected to the outer wall of the gear (21), a steel ball (23) is rotatably connected to the inner wall of the slip ring (22), a connecting shaft (24) is fixedly connected to the outer wall of the top of the gear (21), a rotating plate (25) is fixedly connected to the outer wall of the top of the connecting shaft (24), a ball (26) is rotatably connected to the inner wall of the bottom of the rotating plate (25), and a positioning pin (27) is fixedly connected to the outer wall of the top of the rotating plate (25).

6. A marine hydraulic rotary actuator according to claim 5, characterized in that: The slip ring (22) is disposed on the upper and lower sides of the gear (21). The outer walls of the slip ring (22) and the steel ball (23) are slidably connected to the inner wall of the ring groove (17). The outer wall of the gear (21) is slidably connected to the inner wall of the rotating groove (16). The outer wall of the connecting shaft (24) is rotatably connected to the inner wall of the top of the execution block (11). The outer wall of the ball (26) is slidably connected to the outer wall of the top of the execution block (11). The outer wall of the gear (21) meshes with the outer walls of the drive racks (18) on both sides.

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