A gas-liquid composite damper

Abstract

This utility model relates to the field of buffers, specifically to a gas-liquid composite buffer, comprising a buffer cylinder body for supporting the buffer assembly, an outer piston rod disposed inside the buffer cylinder body for mitigating impact force, and an impact head fixedly mounted on the top of the outer piston rod, with an outer buffer telescopic spring disposed below the impact head. This utility model includes an impact head, an outer buffer telescopic spring, an external thread, a hexagonal nut, a contact buffer disc, a vibrating tube, and a nitrogen chamber. During sliding buffering between the outer piston rod and the buffer cylinder body, the outer buffer telescopic spring is located outside the outer piston rod. The distance between the contact buffer disc and the buffer cylinder body can be adjusted by twisting the hexagonal nut, thereby controlling the buffering distance of the outer buffer telescopic spring. Thus, in the use of the gas-liquid composite buffer, the impact head first drives the outer buffer telescopic spring to press down and dissipate a portion of the impact force.

Description

Technical Field

[0001] This utility model relates to the field of buffers, specifically to a gas-liquid composite buffer. Background Technology

[0002] The main function of a buffer is to cushion physical impacts to achieve an optimized effect. In mechanical engineering, common types of buffers include spring buffers, friction buffers, rubber buffers, friction rubber buffers, viscoelastic rubber mud buffers, hydraulic buffers, and air buffers. Among them, the gas-liquid composite buffer is a buffer device that combines two media, gas and liquid, and uses the combined effect of gas pressure and oil damping to achieve the buffering effect on objects.

[0003] Existing gas-liquid composite buffers, due to the different application environments, will undoubtedly place a heavy burden on internal components if they rely solely on internal gas-liquid buffering in environments with large impact forces. This will not only lead to poor buffering performance, but also prevent the buffer from effectively absorbing and dispersing energy under large impact forces, resulting in damage to equipment or personnel. Long-term use will also lead to poor stability and maintenance difficulties for gas-liquid composite buffers.

[0004] Therefore, it is necessary to invent a gas-liquid composite buffer to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a gas-liquid composite buffer. This buffer incorporates a triple-buffering mechanism through an impact head, an external buffer extension spring, external threads, a hexagonal nut, a contact buffer disc, a vibrating tube, and a nitrogen chamber. This triple-buffering design works together to maintain a stable buffering effect under large impact forces, enhancing the buffer's stability and preventing vibration and noise caused by impacts. Furthermore, this design combines hydraulic oil, a nitrogen chamber, and an external buffer extension spring, effectively absorbing and dispersing impact energy. Over long-term use, this improves the buffer's stability and adjustment flexibility, ensuring the safety of equipment and personnel. This addresses the problems of existing gas-liquid composite buffers, where relying solely on internal gas-liquid buffering in high-impact environments places a heavy burden on internal components, leading to poor buffering performance and ineffective energy absorption and dispersion under large impact forces, potentially causing equipment or personnel damage. Long-term use also results in poor stability and difficult maintenance of the gas-liquid composite buffer.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas-liquid composite buffer, including a buffer cylinder body for supporting the main body of the buffer assembly;

[0007] An outer piston rod is located inside the buffer cylinder to mitigate impact force. An impact head is fixedly installed on the top of the outer piston rod, and an outer buffer telescopic spring is located below the impact head. An external thread is provided on the outside of the buffer cylinder, and a hexagonal nut is connected to the external thread of the buffer cylinder. An abutment buffer plate is fixedly installed above the hexagonal nut.

[0008] An inner base is located inside the damper cylinder and is used to connect and install the excitation tube. An oil piston is fixedly installed at the bottom of the outer piston rod. A throttling orifice is opened on the outside of the excitation tube. An isolation piston is fixedly installed above the excitation tube. A nitrogen chamber is fixedly installed above the isolation piston.

[0009] Preferably, the abutment buffer disc is threadedly connected to the buffer cylinder, and the outer piston rod is slidably connected to the buffer cylinder.

[0010] Preferably, a mounting base is fixedly installed at the bottom of the buffer cylinder, and a positioning bolt passes through the top of the mounting base.

[0011] Preferably, the number of throttling orifices is set to four, and the four throttling orifices are evenly distributed on the vibrating tube.

[0012] Preferably, a leak-proof plug is fixedly installed above the nitrogen chamber, and an inner piston rod is slidably connected inside the leak-proof plug. A gas chamber piston head is fixedly installed at the bottom end of the inner piston rod.

[0013] Preferably, the gas chamber piston head is slidably connected to the nitrogen chamber, and the inner piston rod is fixedly connected to the outer piston rod.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This utility model includes an impact head, an external buffer telescopic spring, an external thread, a hexagonal nut, a contact buffer disc, a vibrating tube, and a nitrogen chamber. During sliding buffering between the outer piston rod and the buffer cylinder, an external buffer telescopic spring is installed on the outside of the outer piston rod. The distance between the contact buffer disc and the buffer cylinder can be adjusted by turning the hexagonal nut, thereby controlling the buffering distance of the external buffer telescopic spring. In the use of a gas-liquid composite buffer, the impact head first drives the external buffer telescopic spring downward to dissipate part of the impact force. Then, the inner piston rod compresses the gas in the nitrogen chamber to form a secondary buffer. Subsequently, as the outer piston rod continues to descend, the hydraulic fluid... The piston squeezes the hydraulic oil, causing it to pass through a throttle orifice. The damping force generated by this hydraulic oil counteracts the remaining impact energy, giving the gas-liquid composite shock absorber a triple buffering mechanism. This triple buffering design works together to ensure the shock absorber maintains a stable buffering effect when subjected to large impact forces, and also enhances the stability of the shock absorber, avoiding vibration and noise caused by impact. At the same time, this design combines hydraulic oil, a nitrogen chamber, and an external buffer extension spring into a triple buffering mechanism, which can more effectively absorb and disperse impact energy. With long-term use, it improves the stability and adjustment flexibility of the shock absorber, ensuring the safety of equipment or personnel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the external buffer telescopic spring structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the vibratory excitation tube structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the nitrogen chamber structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the gas chamber piston head structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Buffer cylinder body; 2. Outer piston rod; 3. Impact head; 4. Outer buffer telescopic spring; 5. External thread; 6. Hex nut; 7. Abutment buffer plate; 8. Mounting base; 9. Positioning bolt; 10. Inner base; 11. Vibration tube; 12. Oil piston; 13. Throttling orifice; 14. Isolation piston; 15. Nitrogen chamber; 16. Leak-proof plug; 17. Inner piston rod; 18. Gas chamber piston head. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-5 The gas-liquid composite buffer shown includes a buffer cylinder 1, which is the main body for supporting the buffer assembly;

[0026] An outer piston rod 2 is located inside the buffer cylinder 1 to relieve impact force. An impact head 3 is fixedly installed on the top of the outer piston rod 2. An outer buffer telescopic spring 4 is installed below the impact head 3. An external thread 5 is opened on the outside of the buffer cylinder 1. A hexagonal nut 6 is connected to the external thread of the buffer cylinder 1. An abutment buffer plate 7 is fixedly installed above the hexagonal nut 6.

[0027] The inner base 10 is located inside the damper cylinder 1 and is used to connect and install the excitation tube 11. The bottom of the outer piston rod 2 is fixedly installed with an oil piston 12. The outside of the excitation tube 11 is provided with a throttling orifice 13. The upper part of the excitation tube 11 is fixedly installed with an isolation piston 14. The upper part of the isolation piston 14 is fixedly provided with a nitrogen chamber 15. When the gas-liquid composite damper is in use, the impact head 3 first drives the outer buffer extension spring 4 to press down and dissipate part of the impact force. Then, the inner piston rod 17 compresses the gas in the nitrogen chamber 15 to form a secondary buffer. Subsequently, as the outer piston rod 2 continues to descend, the oil piston 12 squeezes the hydraulic oil so that the damping force generated by the hydraulic oil through the throttling orifice 13 can offset the remaining impact energy, so that the gas-liquid composite damper has a triple buffer mechanism.

[0028] like Figure 1 , Figure 2 and Figure 3As shown, the contact buffer plate 7 is threadedly connected to the buffer cylinder 1, and the outer piston rod 2 is slidably connected to the buffer cylinder 1. The distance of the contact buffer plate 7 on the buffer cylinder 1 can be adjusted by turning the hexagonal nut 6, thereby controlling the buffer distance of the outer buffer extension spring 4. The bottom of the buffer cylinder 1 is fixedly installed with a mounting base 8, and a positioning bolt 9 passes through the top of the mounting base 8. The mounting base 8 and the positioning bolt 9 are used to assist the gas-liquid composite buffer in installation and use in different environments. The number of throttling orifices 13 is set to four, and the four throttling orifices 13 are evenly distributed on the vibrating tube 11. As the outer piston rod 2 continues to descend, the oil piston 12 squeezes the hydraulic oil, and the damping force generated by the hydraulic oil through the throttling orifices 13 of the vibrating tube 11 can offset the remaining impact energy.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, a leak-proof plug 16 is fixedly installed above the nitrogen chamber 15. An inner piston rod 17 is slidably connected inside the leak-proof plug 16. A gas chamber piston head 18 is fixedly installed at the bottom end of the inner piston rod 17. The inner piston rod 17 drives the gas chamber piston head 18 to slide inside the nitrogen chamber 15, thereby pressurizing the internal gas to form a double buffer. The gas chamber piston head 18 is slidably connected to the nitrogen chamber 15, and the inner piston rod 17 is fixedly connected to the outer piston rod 2. The overall structure of the gas chamber piston head 18 is simple, and it is convenient for maintenance personnel to maintain and replace it in time if a fault occurs.

[0030] The working principle of this practical device is as follows: First, take out the gas-liquid composite buffer at the location where it is needed. Using the mounting base 8 and positioning bolts 9, install and use the buffer in different environments. After installation, connect the top of the impact head 3 to the external equipment. Adjust the distance between the contact buffer plate 7 and the buffer cylinder 1 by turning the hexagonal nut 6, thereby controlling the buffering distance of the outer buffer extension spring 4. Then, when using the gas-liquid composite buffer, the impact head 3 receives an external impact force, which drives the outer piston rod 2 to extend and retract into the buffer cylinder 1. The impact head 3 first drives the outer buffer extension spring 4 to depress and dissipate part of the impact force, and then the inner piston rod 1, which follows the outer piston rod 2, depresses further. 7. The piston head 18 of the gas chamber compresses the gas in the nitrogen chamber 15 to form a secondary buffer. Then, as the outer piston rod 2 continues to descend, the hydraulic piston 12 squeezes the hydraulic oil inside the buffer cylinder 1. The hydraulic oil generates damping force through the throttle orifice 13 of the excitation pipe 11 to offset the remaining impact energy. This gives the gas-liquid composite buffer a triple buffering mechanism. The triple buffering design works together to ensure that the buffer can maintain a stable buffering effect when subjected to large impact forces, and also enhances the stability of the buffer, avoiding vibration and noise caused by impact. Finally, after completing the installation and use of the gas-liquid composite buffer according to the above operations, routine maintenance of the device is required. This completes the use of the gas-liquid composite buffer.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gas-liquid composite buffer, characterized in that: include The buffer cylinder (1) is the main body used to support the buffer assembly; An outer piston rod (2) is located inside the buffer cylinder (1) to relieve impact force. An impact head (3) is fixedly installed on the top of the outer piston rod (2). An outer buffer telescopic spring (4) is provided below the impact head (3). An external thread (5) is provided on the outside of the buffer cylinder (1). A hexagonal nut (6) is connected to the external thread of the buffer cylinder (1). An abutment buffer plate (7) is fixedly installed above the hexagonal nut (6). The inner base (10) is located inside the buffer cylinder (1) and is used to connect and install the excitation tube (11). An oil piston (12) is fixedly installed at the bottom of the outer piston rod (2). A throttling hole (13) is opened on the outside of the excitation tube (11). An isolation piston (14) is fixedly installed above the excitation tube (11). A nitrogen chamber (15) is fixedly installed above the isolation piston (14).

2. The gas-liquid composite buffer according to claim 1, characterized in that: The abutment buffer disc (7) is threadedly connected to the buffer cylinder (1), and the outer piston rod (2) is slidably connected to the buffer cylinder (1).

3. The gas-liquid composite buffer according to claim 1, characterized in that: The bottom of the buffer cylinder (1) is fixedly installed with a mounting base (8), and a positioning bolt (9) passes through the top of the mounting base (8).

4. A gas-liquid composite buffer according to claim 1, characterized in that: The number of throttling orifices (13) is set to four, and the four throttling orifices (13) are distributed at equal intervals on the excitation tube (11).

5. A gas-liquid composite buffer according to claim 1, characterized in that: A leak-proof plug (16) is fixedly installed above the nitrogen chamber (15). An inner piston rod (17) is slidably connected inside the leak-proof plug (16). A gas chamber piston head (18) is fixedly installed at the bottom end of the inner piston rod (17).

6. A gas-liquid composite buffer according to claim 5, characterized in that: The gas chamber piston head (18) is slidably connected to the nitrogen chamber (15), and the inner piston rod (17) is fixedly connected to the outer piston rod (2).

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