Servo hydraulic oil cylinder with buffering function

Abstract

The servo hydraulic oil cylinder with the buffering function comprises a hydraulic cylinder body, a hydraulic rod and a buffering sleeve, a second connecting piece is fixedly installed at the tail end of the hydraulic cylinder body, a first connecting piece is spirally fixed to the tail end of the hydraulic rod, the hydraulic rod is installed in the hydraulic cylinder body in a sliding mode, and a spring is fixedly installed at the front end of the hydraulic rod. A cylinder cover is fixedly installed at a cylinder opening of the hydraulic cylinder, a buffering sleeve is fixedly installed outside the cylinder opening of the hydraulic cylinder, and a buffering cushion is arranged on the buffering sleeve. According to the hydraulic cylinder, the spring is fixedly installed at the end, in the hydraulic cylinder, of the hydraulic rod, and the buffering sleeve is arranged at the position of the cylinder opening of the hydraulic cylinder, so that when the hydraulic cylinder works, protection structures are arranged in the extension and recovery processes of the hydraulic rod, impact and vibration in the working process of the hydraulic cylinder can be absorbed, the hydraulic cylinder is protected, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a servo hydraulic cylinder with a buffering function. Background Art

[0002] The hydraulic cylinder is an important component in engineering machinery. When the hydraulic cylinder drags a heavy external load to perform reciprocating motion, if there is no suitable buffer device, when the piston end face runs to the end of the stroke, severe pressure, impact and vibration will often occur, making the hydraulic system run unsteadily and easily causing damage to the hydraulic cylinder. Therefore, it is necessary to set a reasonable buffer device to avoid damage to the hydraulic cylinder caused by the above-mentioned impact pressure.

[0003] 20. The servo hydraulic oil cylinder of claim 19, wherein the at least one hydraulic servo oil cylinder is constructed so that the servo oil cylinder has an oil passageway that is adapted to move relative to the oil pipe. The servo oil passageway is constructed so that the at least one hydraulic servo oil cylinder is in a state of being easily moved. The servo oil passageway is constructed so that the at least one hydraulic servo oil cylinder is easily moved.

[0004] Therefore, it is necessary to invent a servo hydraulic cylinder with a buffering function to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a servo hydraulic cylinder with a buffering function to solve the technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a servo hydraulic cylinder with a buffering function, comprising a hydraulic cylinder, a hydraulic rod and a buffer sleeve, wherein the end of the hydraulic cylinder is fixedly installed with a second connecting piece, the end of the hydraulic rod is spirally fixed with a connecting piece, the hydraulic rod is slidably installed in the hydraulic cylinder, a spring is fixedly installed at the front end of the hydraulic rod, a cylinder cover is fixedly installed at the cylinder mouth of the hydraulic cylinder, a buffer sleeve is fixedly installed outside the cylinder mouth of the hydraulic cylinder, and a buffer pad is provided on the buffer sleeve.

[0007] Preferably, the hydraulic cylinder is provided with oil inlet one and oil inlet two, the inner wall of the cylinder mouth of the hydraulic cylinder is provided with a cylinder cover fixing thread, the rear end of the hydraulic cylinder is provided with a connecting piece two fixing hole, connecting piece two is fixedly installed on the connecting piece two fixing hole, and oil inlet one and oil inlet two are used for replacement of hydraulic oil in the hydraulic cylinder.

[0008] Preferably, the front end of the hydraulic rod is provided with a connecting piece mounting thread, the rear end of the hydraulic rod is fixedly mounted with a piston using a nut, the front end of the piston is provided with an anti-fouling ring, and a spring is fixedly connected to the piston. The anti-fouling ring can prevent hydraulic oil from accumulating in the hydraulic cylinder and affecting the performance of the hydraulic cylinder.

[0009] Preferably, the connecting piece one is spirally fixedly installed at the connecting piece installation thread, a connecting rod is rotatably installed at the front end of the connecting piece one, the piston and the anti-fouling ring are tightly fitted with the inner wall of the hydraulic cylinder, the anti-fouling ring is made of a material with high wear resistance, oil resistance and aging resistance, and the connecting piece one is used to connect with a belt-driven component.

[0010] Preferably, the cover edge of the cylinder cover is the same as the outer diameter of the hydraulic cylinder body, the rear section of the cylinder cover is the same as the inner diameter of the hydraulic cylinder body, and the cylinder cover is provided with cylinder cover mounting threads, and multi-layer threaded connections are used to improve the sealing of the interface.

[0011] Preferably, a piston rod hole is opened in the cylinder head, a piston rod sealing groove is opened on the inner wall of the piston rod hole, and a cylinder head sealing ring is provided at the rear end of the cylinder head. The piston sealing groove and the cylinder head sealing groove are used in conjunction with the sealing rubber ring to improve the overall sealing of the hydraulic cylinder and prevent hydraulic oil leakage.

[0012] Preferably, a layer of buffer pad is fixedly adhered to the top of the buffer sleeve, and two fixing bolts are rotatably installed on the buffer sleeve. When the hydraulic rod is in the return stroke, the buffer pad can play a buffering role on the rear end of the connecting piece 1.

[0013] Preferably, a buffer sleeve insertion hole is formed on the buffer sleeve and the buffer pad, and the diameter of the buffer sleeve insertion hole is the same as the diameter of the hydraulic rod, thereby improving the sealing performance.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. By fixing a spring at one end of the hydraulic rod in the hydraulic cylinder and a buffer sleeve at the cylinder mouth of the hydraulic cylinder, the hydraulic cylinder has a protective structure during the extension and recovery of the hydraulic rod when the hydraulic cylinder is working, which can absorb the impact and vibration during the working process of the hydraulic cylinder, protect the hydraulic cylinder and extend its service life;

[0016] 2. The hydraulic servo cylinder is a high-precision hydraulic component. Its service life will be affected by many factors, such as hydraulic oil contamination, temperature changes, shock and vibration. By setting a buffer structure, the influence of these factors can be effectively reduced, thereby extending the service life of the hydraulic servo cylinder;

[0017] 3. The hydraulic servo system needs to maintain a high degree of stability and precision during operation. If the hydraulic servo cylinder is disturbed by impact and vibration, it will affect the stability and precision of the entire system. By setting a buffer structure, the stability and precision of the system can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a servo hydraulic cylinder with a buffering function;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of a hydraulic rod;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the cylinder head;

[0021] Figure 4 It is the overall structural diagram of the hydraulic cylinder;

[0022] Figure 5 It is a schematic diagram of the structure of the buffer sleeve.

[0023] Description of reference numerals:

[0024] 1. Hydraulic cylinder; 2. Connector 1; 3. Hydraulic rod; 4. Buffer sleeve; 5. Oil inlet 1; 6. Oil inlet 2; 7. Connector 2; 8. Connector mounting thread; 9. Piston; 10. Anti-fouling ring; 11. Nut; 12. Spring; 13. Cylinder head; 14. Piston rod socket; 15. Piston rod sealing groove; 16. Cylinder head mounting thread; 17. Cylinder head sealing ring; 18. Cylinder head fixing thread; 19. Connector 2 fixing hole; 20. Buffer sleeve socket; 21. Buffer pad; 22. Fixing bolt. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-5A servo hydraulic cylinder with a buffering function is shown, comprising a hydraulic cylinder 1, a hydraulic rod 3 and a buffer sleeve 4, a connecting piece 2 7 is fixedly installed at the end of the hydraulic cylinder 1, a connecting piece 1 2 is spirally fixed at the end of the hydraulic rod 3, the hydraulic rod 3 is slidably installed in the hydraulic cylinder 1, a spring 12 is fixedly installed at the front end of the hydraulic rod 3, a cylinder head 13 is fixedly installed at the cylinder mouth of the hydraulic cylinder 1, a buffer sleeve 4 is fixedly installed outside the cylinder mouth of the hydraulic cylinder 1, a buffer pad 21 is provided on the buffer sleeve 4, an oil inlet 1 5 and an oil inlet 2 6 are provided on the hydraulic cylinder 1, a cylinder head fixing thread 18 is opened on the inner wall of the cylinder mouth of the hydraulic cylinder 1, and the hydraulic cylinder 1 is provided with a connector second fixing hole 19 at the rear end, a connector second 7 is fixedly installed on the connector second fixing hole 19, a connector mounting thread 8 is provided at the front end of the hydraulic rod 3, a piston 9 is fixedly installed at the rear end of the hydraulic rod 3 using a nut 11, an anti-fouling ring 10 is provided at the front end of the piston 9, a spring 12 is fixedly connected to the piston 9, a connector 2 is spirally fixedly installed at the connector mounting thread 8, a connecting rod is rotatably installed at the front end of the connector 2, the piston 9 and the anti-fouling ring 10 are tightly fitted to the inner wall of the hydraulic cylinder 1, and the anti-fouling ring 10 is made of materials with high wear resistance, oil resistance and aging resistance.

[0027] The cover edge of the cylinder head 13 is the same as the outer diameter of the cylinder body of the hydraulic cylinder 1, and the rear section of the cylinder head 13 is the same as the inner diameter of the cylinder body of the hydraulic cylinder 1. The cylinder head 13 is provided with a cylinder head mounting thread 16, and a piston rod insertion hole 14 is opened in the cylinder head 13. A piston rod sealing groove 15 is opened on the inner wall of the piston rod insertion hole 14, and a cylinder head sealing ring 17 is provided at the rear end of the cylinder head 13. A layer of buffer pad 21 is fixedly adhered to the top of the buffer sleeve 4, and two fixing bolts 22 are rotatably installed on the buffer sleeve 4. A buffer sleeve insertion hole 20 is opened on the buffer sleeve 4 and the buffer pad 21, and the diameter of the buffer sleeve insertion hole 20 is the same as the diameter of the hydraulic rod 3.

[0028] Refer to the instruction manual Figure 1-3 When using the utility model, first, the spring 12 fixedly installed at the end of the hydraulic rod 3 can first contact with the bottom of the hydraulic cylinder 1 when the hydraulic rod 3 returns, thereby playing a buffering role to prevent the hydraulic cylinder 1 from being damaged due to excessive speed during the return of the hydraulic cylinder 3. The buffer pad 21 on the buffer sleeve 20 plays a similar role, offsetting the collision force of the connecting piece 2 on the front end of the hydraulic cylinder 1, and protecting the hydraulic cylinder more comprehensively from the inside to the outside;

[0029] Refer to the instruction manual Figure 4-5 When the utility model is used, an anti-fouling ring 10 is provided at the front end of the piston 9, which can clean the inner wall of the hydraulic cylinder 1 while the hydraulic rod 3 moves back and forth, preventing the hydraulic oil from adhering and accumulating on the inner wall of the cylinder, resulting in increased power consumption of the hydraulic cylinder.

Claims

1. A servo hydraulic cylinder with a buffering function, comprising a hydraulic cylinder (1), a hydraulic rod (3) and a buffer sleeve (4), characterized in that: The end of the hydraulic cylinder (1) is fixedly mounted with a second connecting piece (7), the end of the hydraulic rod (3) is spirally fixed with a first connecting piece (2), the hydraulic rod (3) is slidably mounted in the hydraulic cylinder (1), a spring (12) is fixedly mounted at the front end of the hydraulic rod (3), a cylinder cover (13) is fixedly mounted at the cylinder mouth of the hydraulic cylinder (1), a buffer sleeve (4) is fixedly mounted outside the cylinder mouth of the hydraulic cylinder (1), and a buffer pad (21) is provided on the buffer sleeve (4).

2. The servo hydraulic cylinder with buffering function according to claim 1, characterized in that: The hydraulic cylinder (1) is provided with an oil inlet port 1 (5) and an oil inlet port 2 (6); a cylinder cover fixing thread (18) is provided on the inner wall of the cylinder port of the hydraulic cylinder (1); a connecting member 2 fixing hole (19) is provided at the rear end of the hydraulic cylinder (1); and a connecting member 2 (7) is fixedly mounted on the connecting member 2 fixing hole (19).

3. The servo hydraulic cylinder with buffering function according to claim 1, characterized in that: The front end of the hydraulic rod (3) is provided with a connecting piece mounting thread (8), the rear end of the hydraulic rod (3) is fixedly mounted with a piston (9) using a nut (11), the front end of the piston (9) is provided with an anti-fouling ring (10), and a connecting spring (12) is fixedly connected to the piston (9).

4. The servo hydraulic cylinder with buffering function according to claim 3, characterized in that: The connecting piece installation thread (8) is spirally fixedly installed with a connecting piece (2), and a connecting rod is rotatably installed at the front end of the connecting piece (2). The piston (9) and the anti-fouling ring (10) are tightly fitted with the inner wall of the hydraulic cylinder (1), and the anti-fouling ring (10) is made of a material with high wear resistance, oil resistance and aging resistance.

5. The servo hydraulic cylinder with buffering function according to claim 1, characterized in that: The cover edge of the cylinder cover (13) is the same as the outer diameter of the cylinder body of the hydraulic cylinder (1), the rear section of the cylinder cover (13) is the same as the inner diameter of the cylinder body of the hydraulic cylinder (1), and the cylinder cover (13) is provided with a cylinder cover mounting thread (16).

6. The servo hydraulic cylinder with buffering function according to claim 2, characterized in that: A piston rod insertion hole (14) is formed in the cylinder cover (13), a piston rod sealing groove (15) is formed on the inner wall of the piston rod insertion hole (14), and a cylinder cover sealing ring (17) is provided at the rear end of the cylinder cover (13).

7. The servo hydraulic cylinder with buffering function according to claim 1, characterized in that: A layer of buffer pad (21) is fixedly adhered to the top of the buffer sleeve (4), and two fixing bolts (22) are rotatably mounted on the buffer sleeve (4).

8. The servo hydraulic cylinder with buffering function according to claim 7, characterized in that: The buffer sleeve (4) and the buffer pad (21) are provided with a buffer sleeve insertion hole (20), and the diameter of the buffer sleeve insertion hole (20) is the same as the diameter of the hydraulic rod (3).

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