Hydraulic oil cylinder with pressure convenient to adjust

Abstract

The utility model discloses a hydraulic oil cylinder convenient to adjust pressure, which belongs to the technical field of hydraulic oil cylinders and comprises an oil cylinder body, connectors are in threaded connection with the upper end and the lower end of one side of the outer surface of the oil cylinder body, a side cylinder is fixedly connected with one side of each connector, a through hole is formed in the middle of the upper surface of each side cylinder, and a rotating rod is rotatably connected in each through hole. Symmetrically-distributed threaded grooves are formed in the middle section of the outer surface of the rotating rod, and the interiors of the threaded grooves are in threaded connection with pressure relief assemblies. Through the arranged rotating rod and the pressure relief assembly, the extrusion force of the moving plate on the spring can be adjusted so as to adjust the jacking force of the spring on the plugging head, so that the pressure in the oil cylinder body is regulated, controlled and released, the operation is convenient, real-time adjustment is facilitated, and the situation that the safety and stability of equipment operation are influenced due to overload of the internal pressure is effectively avoided; and through the arranged control assembly, the rotating disc can be limited and fixed through a fixing bolt, so that the rotating disc is prevented from rotating automatically, and unnecessary displacement of the moving plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically a hydraulic cylinder that is easy to adjust pressure. Background Technology

[0002] A hydraulic cylinder is a mechanical device that uses a hydraulic medium (such as hydraulic oil) to generate pressure within a sealed cylinder, thereby achieving linear pushing and pulling motion. It is widely used in various mechanical equipment, such as robotic arms, excavators, and punch presses, to complete linear motion or force transmission operations such as lifting, pushing, and stretching. With its advantages of strong power, flexible adjustment, and smooth operation, hydraulic cylinders play an important role in industrial automation and mechanical manufacturing. To ensure that they can operate safely, stably, and efficiently under different working conditions and meet diverse requirements for output force and movement speed, the pressure of the hydraulic cylinder usually needs to be precisely adjusted and controlled.

[0003] However, traditional hydraulic cylinders can only rely on the system to control the pressure as a whole, which is not convenient for adjusting the pressure of each cylinder individually. The adjustment process is cumbersome and the response is not timely. It is not convenient to make flexible adjustments according to the actual working conditions, which may cause problems such as overload and affect the safety of equipment operation.

[0004] Therefore, this utility model provides a hydraulic cylinder with easily adjustable pressure to solve the above problems. Utility Model Content

[0005] This invention provides a hydraulic cylinder with easily adjustable pressure, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: it includes a hydraulic cylinder body, with connectors threaded to both the upper and lower ends of one side of the outer surface of the hydraulic cylinder body, a side cylinder fixedly connected to one side of the connector, a through hole in the middle of the upper surface of the side cylinder, a rotating rod rotatably connected inside the through hole, symmetrically distributed threaded grooves in the middle section of the outer surface of the rotating rod, a pressure relief component threaded to the inside of the threaded grooves, and a control component fixedly connected to the top of the rotating rod;

[0007] The pressure relief assembly includes a movable plate, the movable plate being internally threaded into the interior of a threaded groove, a spring being fixedly connected to the back of the movable plate, a sealing head being fixedly connected to one end of the spring, and a sealing gasket being fixedly connected inside the sealing head.

[0008] As a preferred technical solution of this application, sealing plugs are fixedly connected to both ends of the inner wall of the side cylinder, and guide rods are fixedly connected to the opposite surfaces of the sealing plugs. The outer surfaces of the guide rods are slidably connected to the interior of both sides of the upper surface of the moving plate and the sealing head.

[0009] As a preferred technical solution of this application, the control component includes a rotating disk, the lower surface of which is fixedly connected to the top of the rotating rod, a connecting spring fixedly connected to one side of the upper surface of the rotating disk, a fixing bolt fixedly connected to one end of the connecting spring, and a plurality of threaded grooves adapted to the fixing bolts are provided on the periphery of the upper surface of the side cylinder.

[0010] As a preferred technical solution of this application, a damping rod is fixedly connected to the inner bottom wall of the cylinder body, a first rubber pad is fixedly connected to the top end of the damping rod, and a shock-absorbing spring is fixedly connected to the lower surface of the first rubber pad on the periphery of the damping rod.

[0011] As a preferred technical solution of this application, a sliding groove is provided on the upper surface of the cylinder body, a sealing ring is fixedly connected to the top end of the sliding groove, and a dustproof ring is fixedly connected to the bottom end of the sliding groove.

[0012] As a preferred technical solution of this application, a piston rod is slidably connected inside the sealing ring, a piston is fixedly connected to the outer surface of the piston rod, and a second rubber pad adapted to the first rubber pad is fixedly connected to the bottom end of the piston rod.

[0013] 1. By adjusting the rotating rod and pressure relief assembly, the squeezing force of the moving plate on the spring can be adjusted, thereby adjusting the pushing force of the spring on the sealing head, thus regulating and releasing the pressure inside the cylinder body. It is easy to operate and can be adjusted in real time, effectively avoiding the impact on the safety and stability of equipment operation due to internal pressure overload.

[0014] 2. Through the set control components, the rotating disk can be limited and fixed by the fixing bolt to prevent it from rotating on its own, thereby avoiding unnecessary displacement of the moving plate and ensuring the accuracy of pressure regulation and the stability of system operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a hydraulic cylinder that facilitates pressure adjustment;

[0016] Figure 2 This is a cross-sectional schematic diagram of a hydraulic cylinder that facilitates pressure adjustment.

[0017] Figure 3 This is a schematic diagram of the internal structure of the cylinder body in a hydraulic cylinder that facilitates pressure adjustment.

[0018] Figure 4 This is a schematic diagram of the internal structure of the side cylinder in a hydraulic cylinder that facilitates pressure adjustment.

[0019] Figure 5 This is a schematic diagram of a sealing head in a hydraulic cylinder that facilitates pressure adjustment.

[0020] In the picture:

[0021] 1. Cylinder body; 2. Connector; 3. Side cylinder; 4. Rotating rod; 5. Moving plate; 6. Spring; 7. Sealing head; 8. Sealing gasket; 9. Sealing plug; 10. Guide rod; 11. Rotating disk; 12. Connecting spring; 13. Fixing bolt; 14. Damping rod; 15. First rubber pad; 16. Shock-absorbing spring; 17. Sealing ring; 18. Dustproof ring; 19. Piston rod; 20. Piston; 21. Second rubber pad. Detailed Implementation

[0022] 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.

[0023] This utility model provides a hydraulic cylinder with easily adjustable pressure, such as... Figures 1-5 As shown, a hydraulic cylinder with adjustable pressure includes a cylinder body 1. Both the upper and lower ends of one side of the outer surface of the cylinder body 1 are threaded with connectors 2. A side cylinder 3 is fixedly connected to one side of the connectors 2. A through hole is opened in the middle of the upper surface of the side cylinder 3. A rotating rod 4 is rotatably connected inside the through hole. A symmetrically distributed threaded groove is opened in the middle section of the outer surface of the rotating rod 4. A pressure relief component is threadedly connected inside the threaded groove. A control component is fixedly connected to the top of the rotating rod 4.

[0024] The pressure relief assembly includes a movable plate 5, with its internal threads connected to the inside of a threaded groove. A spring 6 is fixedly connected to the back of the movable plate 5, and a sealing head 7 is fixedly connected to one end of the spring 6. A sealing gasket 8 is fixedly connected inside the sealing head 7. By rotating the rotating rod 4, the movable plate 5 can move relative to or towards each other along the threaded groove on the outer surface of the rotating rod 4 to adjust the squeezing force on the spring 6, thereby adjusting the pushing force of the spring 6 on the sealing head 7, and thus regulating and releasing the pressure inside the cylinder body 1. The operation is convenient and easy to adjust in real time, effectively avoiding the impact on the safety and stability of equipment operation due to internal pressure overload.

[0025] Sealing plugs 9 are fixedly connected to both ends of the inner wall of the side cylinder 3. Guide rods 10 are fixedly connected to the opposite surfaces of the sealing plugs 9. The outer surface of the guide rods 10 is slidably connected to the inner sides of the upper surfaces of the moving plate 5 and the sealing head 7. A pressure relief port is opened in the middle of the outer surface of the side cylinder 3. A through groove adapted to the sealing head 7 is opened on the upper surface of the sealing plugs 9 to facilitate the outflow of internal pressure of the cylinder body 1. The guide rods 10 limit and guide the moving plate 5 and the sealing head 7 so that they can move horizontally along the surface of the rotating rod 4.

[0026] The control assembly includes a rotating disk 11. The lower surface of the rotating disk 11 is fixedly connected to the top of the rotating rod 4. A connecting spring 12 is fixedly connected to one side of the upper surface of the rotating disk 11. A fixing bolt 13 is fixedly connected to one end of the connecting spring 12. Several threaded grooves that are compatible with the fixing bolt 13 are opened on the outer periphery of the upper surface of the side cylinder 3. The connecting spring 12 connects the fixing bolt 13 to the rotating disk 11 to prevent the fixing bolt 13 from falling off and being lost. The rotating disk 11 can easily drive the rotating rod 4 to rotate. When the rotating rod 4 rotates to the desired position, the fixing bolt 13 can be pressed down to screw its threads into the corresponding threaded groove to fix the position of the rotating disk 11 and prevent it from rotating on its own. This prevents the moving plate 5 from generating unnecessary displacement and ensures the accuracy of pressure regulation and the stability of system operation.

[0027] A damping rod 14 is fixedly connected to the inner bottom wall of the cylinder body 1. A first rubber pad 15 is fixedly connected to the top of the damping rod 14. A shock-absorbing spring 16 is fixedly connected to the lower surface of the first rubber pad 15 on the periphery of the damping rod 14. The first rubber pad 15 can receive the piston rod 19 when it retracts. The damping rod 14 and the shock-absorbing spring 16 can buffer and release the vibration generated by it, so as to reduce the impact on the cylinder body 1 and thus improve its service life.

[0028] A sliding groove is provided on the upper surface of the cylinder body 1. A sealing ring 17 is fixedly connected to the top of the sliding groove, and a dustproof ring 18 is fixedly connected to the bottom of the sliding groove. The sealing ring 17 can ensure the sealing between the piston rod 19 and the cylinder body 1 during the movement. The dustproof ring 18 can wipe the dust and impurities on the surface of the piston rod 19 when it retracts, so as to avoid contamination of the inside of the cylinder body 1.

[0029] A piston rod 19 is slidably connected inside the sealing ring 17. A piston 20 is fixedly connected to the outer surface of the piston rod 19. A second rubber pad 21 that matches the first rubber pad 15 is fixedly connected to the bottom end of the piston rod 19. Oil ports are provided at both the upper and lower ends on the other side of the outer surface of the cylinder body 1. The piston 20 is slidably connected to and tightly fitted to the inner wall of the cylinder body 1 so that hydraulic oil can enter and exit through the oil ports to push it, thereby controlling the extension and retraction of the piston rod 19.

[0030] Working steps: First, hydraulic oil can be introduced into the cylinder body 1 through the oil port, so that the piston rod 19 can be extended and retracted by the piston 20. Then, when the piston rod 19 retracts, the second rubber pad 21 contacts the first rubber pad 15, and the damping rod 14 and the shock-absorbing spring 16 can dampen the shock. Second, the rotating rod 4 can be rotated by the rotating disk 11. Under the limiting guidance of the guide rod 10, the moving plate 5 moves relative to or towards the threaded groove on the outer surface of the rotating rod 4 to adjust the squeezing force on the spring 6, thereby adjusting the pushing force of the spring 6 on the sealing head 7. Finally, when the rotating rod 4 rotates to the required position, the fixing bolt 13 can be pressed down to screw its threads into the corresponding threaded groove to fix the position of the rotating disk 11. Subsequently, when the internal pressure of the cylinder body 1 is overloaded, it enters the side cylinder 3 through the connector 2, pushes the sealing head 7 away from the sealing plug 9, and flows out from the pressure relief port through the through groove.

[0031] 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 hydraulic cylinder with easily adjustable pressure, comprising a cylinder body (1), characterized in that: The upper and lower ends of one side of the outer surface of the cylinder body (1) are threaded with connectors (2), and a side cylinder (3) is fixedly connected to one side of the connector (2). A through hole is opened in the middle of the upper surface of the side cylinder (3), and a rotating rod (4) is rotatably connected inside the through hole. A symmetrically distributed threaded groove is opened in the middle section of the outer surface of the rotating rod (4), and a pressure relief component is threadedly connected inside the threaded groove. A control component is fixedly connected to the top of the rotating rod (4). The pressure relief assembly includes a movable plate (5), the movable plate (5) is internally threaded into the inside of a threaded groove, a spring (6) is fixedly connected to the back of the movable plate (5), a sealing head (7) is fixedly connected to one end of the spring (6), and a sealing gasket (8) is fixedly connected inside the sealing head (7).

2. The hydraulic cylinder with easily adjustable pressure according to claim 1, characterized in that: The two ends of the inner wall of the side cylinder (3) are fixedly connected to sealing plugs (9), and the opposite side of the sealing plugs (9) is fixedly connected to guide rods (10). The outer surface of the guide rods (10) is slidably connected to the inside of the upper surface of the moving plate (5) and the sealing head (7).

3. A hydraulic cylinder with easily adjustable pressure according to claim 1, characterized in that: The control component includes a rotating disk (11), the lower surface of which is fixedly connected to the top of the rotating rod (4), a connecting spring (12) is fixedly connected to one side of the upper surface of the rotating disk (11), a fixing bolt (13) is fixedly connected to one end of the connecting spring (12), and several threaded grooves that are compatible with the fixing bolt (13) are opened at the outer periphery of the upper surface of the side cylinder (3).

4. A hydraulic cylinder with easily adjustable pressure according to claim 1, characterized in that: A damping rod (14) is fixedly connected to the inner bottom wall of the cylinder body (1), and a first rubber pad (15) is fixedly connected to the top of the damping rod (14). A shock-absorbing spring (16) is fixedly connected to the lower surface of the first rubber pad (15) on the periphery of the damping rod (14).

5. A hydraulic cylinder with easily adjustable pressure according to claim 1, characterized in that: The upper surface of the cylinder body (1) is provided with a sliding groove, and a sealing ring (17) is fixedly connected to the top of the sliding groove, and a dustproof ring (18) is fixedly connected to the bottom of the sliding groove.

6. A hydraulic cylinder with easily adjustable pressure according to claim 5, characterized in that: The sealing ring (17) is slidably connected to a piston rod (19), and a piston (20) is fixedly connected to the outer surface of the piston rod (19). The bottom end of the piston rod (19) is fixedly connected to a second rubber pad (21) that is compatible with the first rubber pad (15).

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