Hydro-pneumatic spring with high bearing capacity

Abstract

The utility model discloses a hydro-pneumatic spring with high bearing capacity, which relates to the technical field of hydro-pneumatic springs and comprises a cylinder body, a rotating ring is fixedly connected to the bottom of the outer wall of the cylinder body, a rotating ring is rotatably connected to the outer wall of the rotating ring, and inclined rods are fixedly connected to the outer periphery of the rotating ring. A user can rotate a fixing ring or a connecting rod with two hands, an inclined rod drives a rotating ring to rotate, a threaded rod moves accordingly, an adjusting piston slides in a cylinder body, the pressure borne by hydraulic oil is adjusted, and therefore when a piston rod bears external pressure and enables a second piston to move downwards, the hydraulic oil can be adjusted; hydraulic oil flows into the second cavity through the drainage hole, the second piston bears throttling resistance to achieve the buffering effect, when the piston rod bears external pressure to enable the second piston to move upwards, buffering is carried out through reverse thrust of nitrogen, damping is achieved in the stretching direction and the compression direction while the pressure is conveniently adjusted, and the damping effect is good. And the bearing capacity of the hydro-pneumatic spring is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas springs, in particular to an oil and gas spring with high load-bearing capacity. Background Art

[0002] Hydro-pneumatic suspension primarily consists of hydro-pneumatic springs, combining elastic and damping elements. The cylinder also serves a guiding function, requiring minimal vehicle body space. Its superior nonlinear elastic properties and excellent vibration damping performance maximize the ride comfort requirements of construction vehicles. Currently, hydro-pneumatic suspension systems used on construction vehicles primarily fall into two types: independent and interconnected. Spring configurations include single-chamber hydro-pneumatic, dual-chamber hydro-pneumatic, multi-stage pressure, and hybrid hydro-pneumatic. Compared to other suspension systems, hydro-pneumatic suspension exhibits typical nonlinear variable stiffness and gradual stiffness. When the vehicle travels on flat roads, the suspension travel is small, resulting in less stiffness from the elastic medium subjected to transient pressure, thus meeting ride comfort requirements. When the vehicle travels on undulating terrain, the elastic force exhibits a nonlinear change and increased stiffness, absorbing more impact energy. This leverages the high energy storage ratio of gas per unit mass, effectively providing a buffering effect, preventing direct transmission of ground excitation to the vehicle body and the occurrence of "suspension breakdown," thereby increasing the vehicle's off-road speed and maneuverability.

[0003] The oil and gas springs in the prior art have damping only in the compression direction, which results in a significant reduction in bearing capacity. It is also inconvenient to adjust the pressure in the oil and gas springs, making it difficult to meet different road conditions and driving requirements. Utility Model Content

[0004] The purpose of the present invention is to provide a high-load-bearing oil-gas spring to solve at least any one of the problems raised in the above-mentioned background technology.

[0005] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel also is provided with an interlocking structure.

[0006] Preferably, a protective shell is fixedly connected to the middle position of the bottom of the rotating circle.

[0007] Preferably, the protective shell is slidably connected to the threaded rod.

[0008] Preferably, a sealing ring is fixedly connected to the top of the cylinder.

[0009] Preferably, the sealing ring is slidably connected to the piston rod.

[0010] Preferably, the inner wall of the second cavity is slidably connected to a first piston.

[0011] The beneficial effects of the utility model are as follows:

[0012] In the utility model, the user can rotate the fixed ring or the connecting rod with both hands, so that the inclined rod drives the rotating circle to rotate, and the threaded rod moves accordingly, so that the adjusting piston slides in the cylinder body, and the pressure of the hydraulic oil is adjusted. When the piston rod is subjected to external pressure to move the second piston downward, the hydraulic oil flows into the second cavity through the drainage hole, and the second piston is subjected to throttling resistance, thereby playing a buffering role. When the piston rod is subjected to external pressure to move the second piston upward, it is buffered by the reverse thrust of the nitrogen, which makes it easy to adjust the pressure while having damping in both the tension and compression directions, thereby greatly improving the bearing capacity of the oil-gas spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is an exploded view of the utility model;

[0015] Figure 3It is a schematic diagram of the internal structure of the utility model.

[0016] In the figure: 1. Piston rod; 2. Cylinder body; 3. Inclined rod; 4. Protective shell; 5. Connecting rod; 6. Fixed ring; 7. Rotating ring; 8. Threaded rod; 9. Rotating ring; 10. Sealing ring; 11. Nitrogen; 12. First piston; 13. Drainage hole; 14. Second piston; 15. Hydraulic oil; 16. Adjusting piston. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The utility model provides Figure 1-3 The shown high-load-bearing oil-gas spring includes a cylinder body 2, a rotating ring 7 is fixedly connected to the bottom of the outer wall of the cylinder body 2, a rotating ring 9 is rotatably connected to the outer wall of the rotating ring 7, and an inclined rod 3 is fixedly connected to the outer periphery of the rotating ring 9. The four inclined rods 3 are fixed with connecting rods 5 at opposite ends, and a fixed ring 6 is fixedly connected between one end of the four connecting rods 5. An adjusting piston 16 is slidably connected to the bottom of the inner wall of the cylinder body 2, and a threaded rod 8 is fixedly connected to the bottom of the adjusting piston 16. The threaded rod 8 passes through the cylinder body 2 and is threadedly connected to the rotating ring 9. A second piston 14 is slidably connected to the inner wall of the cylinder body 2. A first cavity is formed between the adjusting piston 16, the second piston 14 and the cylinder body 2. Hydraulic oil 15 is provided on the inner wall of the first cavity. A piston rod 1 is fixedly connected to the middle position of the top of the second piston 14. The piston rod 1 passes through the cylinder body 2. A second cavity is formed between the cylinder body 2, the piston rod 1 and the second piston 14. Nitrogen 11 is provided in the second cavity. Drainage holes 13 are passed through and provided on both sides of the top middle of the second piston 14.

[0019] The user can use both hands to rotate the fixed ring 6 or the connecting rod 5, so that the inclined rod 3 drives the rotating circle 9 to rotate on the rotating ring 7, and the threaded rod 8 moves accordingly, so that the adjusting piston 16 slides in the cylinder body 2, and the pressure on the hydraulic oil 15 is adjusted. When the piston rod 1 is subjected to external pressure to move the second piston 14 downward, the hydraulic oil 15 flows into the second cavity through the drainage hole 13, and the second piston 14 is subjected to throttling resistance, thereby playing a buffering role. When the piston rod 1 is subjected to external pressure to move the second piston 14 upward, the nitrogen 11 in the first chamber is compressed and buffered by the reverse thrust of the nitrogen 11.

[0020] A protective shell 4 is fixedly connected to the middle position of the bottom of the rotating circle 9, and the protective shell 4 is slidably connected to the threaded rod 8.

[0021] The protective shell 4 is used to protect the threaded teeth of the extended threaded rod 8.

[0022] A sealing ring 10 is fixedly connected to the top of the cylinder body 2 , and the sealing ring 10 slides with the piston rod 1 .

[0023] The sealing ring 10 can effectively ensure the sealing of the interior of the cylinder body 2.

[0024] The inner wall of the second cavity is slidably connected with a first piston 12 .

[0025] When the piston rod 1 is subjected to external pressure and the second piston 14 moves upward, the first piston 12 will also cooperate with the second piston 14 to compress the nitrogen 11, thereby increasing the reverse thrust of the nitrogen 11.

[0026] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-load-bearing oil-gas spring, comprising a cylinder (2), characterized in that: The bottom of the outer wall of the cylinder body (2) is fixedly connected to a rotating ring (7), the outer wall of the rotating ring (7) is rotatably connected to a rotating circle (9), the rotating circle (9) is fixedly connected to inclined rods (3) on all sides, the four inclined rods (3) are fixed to connecting rods (5) at opposite ends, and a fixing ring (6) is fixedly connected between one ends of the four connecting rods (5), the bottom of the inner wall of the cylinder body (2) is slidably connected to an adjusting piston (16), the bottom of the adjusting piston (16) is fixedly connected to a threaded rod (8), the threaded rod (8) passes through the cylinder body (2) and is threadedly connected to the rotating circle (9), A second piston (14) is slidably connected to the inner wall of the cylinder body (2), a first cavity is formed between the regulating piston (16), the second piston (14) and the cylinder body (2), and hydraulic oil (15) is provided on the inner wall of the first cavity. A piston rod (1) is fixedly connected to the middle position of the top of the second piston (14), and the piston rod (1) passes through the cylinder body (2). A second cavity is formed between the cylinder body (2), the piston rod (1) and the second piston (14), and nitrogen (11) is provided in the second cavity. Drainage holes (13) are provided and pass through the middle of the top of the second piston (14) on both sides.

2. The high-load-bearing oil-gas spring according to claim 1, characterized in that: A protective shell (4) is fixedly connected to the middle position of the bottom of the rotating circle (9).

3. The high-load-bearing oil-gas spring according to claim 1, characterized in that: The protective shell (4) is slidably connected to the threaded rod (8).

4. The high-load-bearing oil-gas spring according to claim 1, characterized in that: A sealing ring (10) is fixedly connected to the top of the cylinder body (2).

5. The high-load-bearing oil-gas spring according to claim 4, characterized in that: The sealing ring (10) is slidably connected to the piston rod (1).

6. The high-load-bearing oil-gas spring according to claim 1, characterized in that: A first piston (12) is slidably connected to the inner wall of the second cavity.

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