Electro-hydraulic drive adjustable push rod

Abstract

The utility model relates to the technical field of electro-hydraulic push rods, and discloses an electro-hydraulic drive adjustable push rod which comprises an oil storage tank, a guide pipe is fixedly connected to the interior of the oil storage tank, a positioning ring is fixedly connected to the exterior of the guide pipe, a spring is fixedly connected to the front side of the positioning ring, and a sliding ring is fixedly connected to the front end of the spring. A fixing ring is fixedly connected to the front side of the guide pipe, a cover plate is slidably connected to the inner wall of the fixing ring, sealing assemblies for sealing the guide pipe are fixedly connected to the left side and the right side of the inner wall of a sliding ring, limiting plates are slidably connected to the left end and the right end of the fixing ring, and arc-shaped columns are fixedly connected to the outer portions of the limiting plates. According to the oil supplementing device, the sliding ring can abut against the two arc-shaped columns to slide towards the close sides, the close ends can be clamped in the arc-shaped openings, and therefore the cover plate can be rapidly fixed, and then the oil supplementing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electro-hydraulic actuator technology, and in particular to an electro-hydraulic adjustable actuator. Background Technology

[0002] The electro-hydraulic adjustable actuator is a power transmission device that integrates mechanical, electrical, and hydraulic technologies. Powered by an electric motor, the forward (reverse) rotation of the motor causes hydraulic oil to be pressurized through a bidirectional gear pump. This pressurized oil is then delivered to the working cylinder via an oil circuit manifold and hydraulic control valve, thereby achieving the reciprocating motion of the piston rod. Furthermore, the speed, push-pull force, and stroke can be steplessly adjusted within the rated range.

[0003] First, prepare a wrench according to the size of the oil cap and clean the surrounding area. Use the wrench to slowly loosen the oil cap counterclockwise. Once loose, unscrew it by hand and set it aside. When reinstalling, check the gasket; replace it if there is a problem. Align the gasket with the interface and tighten it manually, then use a wrench to tighten it to the specified torque.

[0004] In existing technologies, some electro-hydraulic adjustable actuators require tools and bolts for oil replenishment. This necessitates finding the appropriate tools and accurately loosening or tightening the bolts. Over time, these bolts rust and become contaminated with oil, making them tightly connected to the actuator and requiring considerable force to loosen. Improper force can lead to stripped or deformed bolts, forcing an interruption of the process and requiring bolt replacement, wasting time and reducing oil replenishment efficiency. Therefore, to address these shortcomings, an electro-hydraulic adjustable actuator is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an electro-hydraulic adjustable push rod, which aims to improve the problem that some existing electro-hydraulic adjustable push rods require tools and bolts for oil replenishment, making the operation complicated, time-consuming and labor-intensive.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An electro-hydraulic adjustable push rod includes an oil storage tank. A guide tube is fixedly connected inside the oil storage tank. A positioning ring is fixedly connected to the outside of the guide tube. A spring is fixedly connected to the front side of the positioning ring. A sliding ring is fixedly connected to the front end of the spring. A fixed ring is fixedly connected to the front side of the guide tube. A cover plate is slidably connected to the inner wall of the fixed ring. Sealing components for sealing the guide tube are fixedly connected to the left and right sides of the inner wall of the sliding ring. Limit plates are slidably connected to both ends of the fixed ring. An arc-shaped column is fixedly connected to the outside of the limit plate.

[0008] As a further description of the above technical solution:

[0009] A servo motor is fixedly connected to the bottom side of the oil storage tank via a flange. A piston cylinder is fixedly connected to the top side of the oil storage tank. A piston rod is slidably connected to the inner wall of the piston cylinder. A connecting block is fixedly connected to the top side of the piston rod. An oil inlet pipe is fixedly connected to the top right end of the piston cylinder. A collar is fixedly connected to the inner wall of the piston cylinder. Multiple balls are rotatably connected inside the collar. An annular cavity is opened inside the top end of the piston cylinder.

[0010] As a further description of the above technical solution:

[0011] The sealing assembly includes two connecting plates. The far sides of the two connecting plates are respectively fixedly connected to the left and right sides of the inner wall of the sliding ring, and a sealing ring is fixedly connected to the near sides of the two connecting plates. A square cavity is opened inside both the left and right ends of the sliding ring.

[0012] As a further description of the above technical solution:

[0013] The outer side of the sealing ring is slidably connected to the inner wall of the guide tube, and the front side of the sealing ring is in contact with the rear side of the cover plate.

[0014] As a further description of the above technical solution:

[0015] A handle ring is fixedly connected to the front side of the cover plate. Arc-shaped openings are provided on both the left and right sides of the cover plate. Guide blocks are fixedly connected to both the upper and lower sides of the cover plate. The outer sides of the two guide blocks are slidably connected to the inner sides of the upper and lower ends of the fixed ring, respectively.

[0016] As a further description of the above technical solution:

[0017] The two arc-shaped pillars are slidably connected at their proximal ends to the interiors of the two arc-shaped openings, and the two arc-shaped pillars are slidably connected at their distal ends to the left and right sides of the inner wall of the sliding ring.

[0018] As a further description of the above technical solution:

[0019] Right-angle handles are fixedly connected to both sides of the piston cylinder, and the bottom sides of the two right-angle handles are fixedly connected to the left and right ends of the top side of the oil storage tank, respectively.

[0020] As a further description of the above technical solution:

[0021] The external parts of the multiple balls are rotatably connected to the inside of the top of the piston cylinder, and the right end of the oil inlet pipe is threaded with a sealing cap.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by loosening the sliding ring, the spring can push the sliding ring to slide, which in turn drives the two connecting plates to slide, thereby driving the sealing ring to slide. This allows the sealing ring to abut against the cover plate and fit tightly, thus improving the sealing effect. At the same time, the sliding ring will also abut against the two arc-shaped pillars and slide towards the same side, and the end of the same side will be engaged inside the arc-shaped opening, thereby quickly completing the fixation of the cover plate and improving the efficiency of oil replenishment.

[0024] 2. In this utility model, the ball bearings transmit lubricating oil, and the piston rod extends and retracts, causing the ball bearings to rotate. The ball bearings then transmit the lubricating oil to the piston rod, which is more effective than the ordinary method in reducing friction and wear, making the equipment run more stably, and extending its service life. Attached Figure Description

[0025] Figure 1 This is a perspective view of the electro-hydraulic drive adjustable push rod proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the sealing ring structure of the electro-hydraulic drive adjustable push rod proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the fixing ring structure of the electro-hydraulic drive adjustable push rod proposed in this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the oil inlet pipe of the electro-hydraulic adjustable push rod proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of the connecting block of the electro-hydraulic drive adjustable push rod proposed in this utility model.

[0031] Legend:

[0032] 1. Oil storage tank; 2. Servo motor; 3. Guide tube; 4. Positioning ring; 5. Spring; 6. Sliding ring; 7. Fixing ring; 8. Cover plate; 9. Handle ring; 10. Guide block; 11. Connecting plate; 12. Sealing ring; 13. Square cavity; 14. Limiting plate; 15. Arc-shaped column; 16. Arc-shaped opening; 17. Piston cylinder; 18. Right-angle handle; 19. Piston rod; 20. Connecting block; 21. Oil inlet pipe; 22. Collar; 23. Ball bearing; 24. Annular cavity. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1 to 3 This utility model provides an embodiment of an electro-hydraulic adjustable push rod, including an oil reservoir 1. The oil reservoir 1 stores hydraulic oil, provides the oil base, and houses a connector, oil pump, sensor, and other components (this is prior art and will not be described in detail here). A servo motor 2 is fixedly connected to the bottom of the oil reservoir 1 via a flange, providing a drive source. A guide tube 3 is fixedly connected inside the oil reservoir 1, providing a guide channel for the injection of hydraulic oil. A positioning ring 4 is fixedly connected to the outside of the guide tube 3, and is welded to the guide tube 3 to provide stable support. A spring 5 is fixedly connected to the front of the positioning ring 4, allowing the spring 5 to be evenly stressed. A sliding ring 6 is fixedly connected to the front end of the spring 5, allowing the sliding ring 6 to slide on the guide tube 3. During the sliding process, the sliding ring 6 compresses the spring 5, allowing the spring 5 to store elastic potential energy, which then applies a force in the opposite direction to the sliding ring 6 for resetting. A fixing ring 7 is fixedly connected to the front side of the guide tube 3. The fixing ring 7 is fixed to the guide tube 3 by welding, thereby providing stable support for the fixing ring 7. A cover plate 8 is slidably connected to the inner wall of the fixing ring 7. The cover plate 8 can slide inside the fixing ring 7, which serves to close and open the guide tube 3.

[0035] Reference Figures 2 to 4 A sealing assembly for sealing the guide tube 3 is fixedly connected to the left and right sides of the inner wall of the sliding ring 6 to prevent hydraulic oil leakage. The sealing assembly includes two connecting plates 11, with the far sides of the two connecting plates 11 fixedly connected to the left and right sides of the inner wall of the sliding ring 6, so that the sliding ring 6 will drive the two connecting plates 11 to slide during the sliding process. Guide blocks 10 are fixedly connected to the upper and lower sides of the cover plate 8, and the guide blocks 10 provide guidance for the sliding of the cover plate 8 to ensure its accurate movement. The outer sides of the two guide blocks 10 are slidably connected to the inner ends of the fixed ring 7, and the fixed ring 7 has a matching slide rail to ensure smooth sliding of the guide blocks 10. A sealing ring 12 is fixedly connected to the near side of the two connecting plates 11. The sealing ring 12 is made of sealing material such as rubber and fits tightly with the inner wall of the guide tube 3 to achieve a seal. The outer side of the sealing ring 12 is slidably connected to the inner wall of the guide tube 3. The inner wall of the guide tube 3 is smooth, so that the sealing ring 12 has a good sealing effect when it slides.

[0036] The front side of the sealing ring 12 contacts the rear side of the cover plate 8, and the two work together to further enhance the sealing performance. A handle ring 9 is fixedly connected to the front side of the cover plate 8, which facilitates manual operation of the cover plate 8. Square cavities 13 are opened inside both ends of the sliding ring 6, with the square cavity 13 being raised in the middle and recessed on both sides. Limiting plates 14 are slidably connected to both ends of the fixed ring 7, which restricts the limiting plates 14 and prevents them from slipping. Arc-shaped columns 15 are fixedly connected to the outside of the limiting plates 14, which prevents the arc-shaped columns 15 from slipping. The far sides of the two arc-shaped columns 15 are slidably connected to the left and right sides of the inner wall of the sliding ring 6, respectively. The sliding ring 6 abuts against the two arc-shaped columns 15, causing the two arc-shaped columns 15 to slide towards the closer side. Arc-shaped openings 16 are opened on both sides of the cover plate 8, which provide a track for the sliding of the arc-shaped columns 15 and restrict the arc-shaped columns 15. The two arc-shaped pillars 15 are slidably connected to the inside of the two arc-shaped openings 16 to ensure that the cover plate 8 is locked in place.

[0037] Reference Figure 1 , Figure 5 and Figure 6 A piston cylinder 17 is fixedly connected to the top side of the oil storage tank 1 for telescopic operation. Right-angle handles 18 are fixedly connected to both sides of the piston cylinder 17, facilitating installation and handling and enhancing structural stability. The bottom sides of the two right-angle handles 18 are fixedly connected to the left and right ends of the top side of the oil storage tank 1, respectively, using welding to improve robustness. A piston rod 19 is slidably connected to the inner wall of the piston cylinder 17, sliding within the piston cylinder 17 to achieve the telescopic action of the push rod. A connecting block 20 is fixedly connected to the top side of the piston rod 19, used to connect external equipment and transmit power to the push rod. An oil inlet pipe 21 is fixedly connected to the top right end of the piston cylinder 17, used to inject hydraulic oil into the piston cylinder 17, reducing friction between the piston rod 19 and the piston cylinder 17. A sealing cap is threaded to the right end of the oil inlet pipe 21, preventing hydraulic oil leakage and ensuring a tight seal. A collar 22 is fixedly connected to the inner wall of the piston cylinder 17, and is secured by welding to improve its stability. Multiple balls 23 are rotatably connected inside the collar 22. These balls 23 contact the piston rod 19, and as the piston rod 19 slides, they drive the balls 23, which then transfer oil to the piston rod 19. The balls 23 are rotatably connected to the top of the piston cylinder 17, and the top of the piston cylinder 17 has a suitable groove to ensure the balls 23 rotate freely. An annular cavity 24 is formed inside the top of the piston cylinder 17, providing space for the rotation of the balls 23 and also accommodating lubricating oil.

[0038] Working principle: When oil needs to be added, by gripping the sliding ring 6 and applying a backward sliding force, the spring 5 is compressed during the sliding process, allowing the spring 5 to store elastic potential energy. This, in turn, applies a force in the opposite direction to the sliding ring 6 to reset it. The sliding ring 6 then drives the two connecting plates 11 to slide, thereby causing the sealing ring 12 to slide. At this point, the sliding ring 6 will no longer be in contact with the two arc-shaped pillars 15. Then, the handle ring 9 can be gripped and a pulling force applied to drive the cover plate 8 to slide. The cover plate 8 then blocks the two sliding rings 6, causing the two arc-shaped pillars 15 to slide to opposite sides, thus guiding the... Pipe 3 can be exposed for oil replenishment. After replenishment, the two guide blocks 10 on the cover plate 8 are aligned with the fixing ring 7 and slid. Then, the sliding ring 6 is released, allowing the spring 5 to push the sliding ring 6 to slide, which in turn drives the two connecting plates 11 to slide, thereby driving the sealing ring 12 to slide. This allows the sealing ring 12 to press against the cover plate 8 and fit tightly, thus improving the sealing effect. At the same time, the sliding ring 6 will also press against the two arc-shaped pillars 15 and slide towards the same side, and the end of the arc-shaped pillar will be engaged inside the arc-shaped opening 16, thus quickly completing the fixing of the cover plate 8.

[0039] Then, when the piston rod 19 extends and retracts, it will drive multiple balls 23 to rotate. Subsequently, the balls 23 will transfer the lubricating oil stored inside the annular cavity 24 to the piston rod 19, which can reduce the friction between the piston rod 19 and the piston cylinder 17, reduce wear, and thus extend its service life.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electro-hydraulic adjustable push rod, comprising an oil storage tank (1), characterized in that: The oil storage tank (1) is internally fixedly connected to a guide tube (3), and externally fixedly connected to a positioning ring (4). A spring (5) is fixedly connected to the front side of the positioning ring (4), and a sliding ring (6) is fixedly connected to the front end of the spring (5). A fixing ring (7) is fixedly connected to the front side of the guide tube (3). A cover plate (8) is slidably connected to the inner wall of the fixing ring (7). Sealing components for sealing the guide tube (3) are fixedly connected to the left and right sides of the inner wall of the sliding ring (6). Limiting plates (14) are slidably connected to both ends of the fixing ring (7). An arc-shaped column (15) is fixedly connected to the outside of the limiting plate (14).

2. The electro-hydraulic adjustable actuator according to claim 1, characterized in that: A servo motor (2) is fixedly connected to the bottom side of the oil storage tank (1) via a flange. A piston cylinder (17) is fixedly connected to the top side of the oil storage tank (1). A piston rod (19) is slidably connected to the inner wall of the piston cylinder (17). A connecting block (20) is fixedly connected to the top side of the piston rod (19). An oil inlet pipe (21) is fixedly connected to the top right end of the piston cylinder (17). A collar (22) is fixedly connected to the inner wall of the piston cylinder (17). Multiple balls (23) are rotatably connected inside the collar (22). An annular cavity (24) is opened inside the top of the piston cylinder (17).

3. The electro-hydraulic adjustable actuator according to claim 1, characterized in that: The sealing assembly includes two connecting plates (11). The far sides of the two connecting plates (11) are fixedly connected to the left and right sides of the inner wall of the sliding ring (6), and the near sides of the two connecting plates (11) are fixedly connected to a sealing ring (12). A square cavity (13) is opened inside both the left and right ends of the sliding ring (6).

4. The electro-hydraulic adjustable actuator according to claim 3, characterized in that: The outer side of the sealing ring (12) is slidably connected to the inner wall of the guide tube (3), and the front side of the sealing ring (12) is in contact with the rear side of the cover plate (8).

5. The electro-hydraulic adjustable actuator according to claim 2, characterized in that: A handle ring (9) is fixedly connected to the front side of the cover plate (8). An arc-shaped opening (16) is provided on both the left and right sides of the cover plate (8). Guide blocks (10) are fixedly connected to both the upper and lower sides of the cover plate (8). The two guide blocks (10) are slidably connected to the upper and lower ends of the fixed ring (7).

6. The electro-hydraulic adjustable actuator according to claim 5, characterized in that: The two arc-shaped pillars (15) are slidably connected at their near ends to the interior of the two arc-shaped openings (16), and the two arc-shaped pillars (15) are slidably connected at their far ends to the left and right sides of the inner wall of the sliding ring (6).

7. The electro-hydraulic adjustable actuator according to claim 2, characterized in that: Right-angle handles (18) are fixedly connected to both sides of the piston cylinder (17), and the bottom sides of the two right-angle handles (18) are fixedly connected to the top left and right ends of the oil storage tank (1).

8. The electro-hydraulic adjustable actuator according to claim 2, characterized in that: The outer surfaces of the multiple balls (23) are rotatably connected to the top of the piston cylinder (17), and the right end of the oil inlet pipe (21) is threaded with a sealing cap.

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