A self-circulating hydraulic damper

Abstract

The present invention discloses a self-circulating hydraulic damper, which relates to the technical field of hydraulic dampers, and comprises a housing, wherein an output shaft is rotatably connected inside the housing, and the output shaft and the housing are rotatably connected via bearings, and the number of bearings is two groups, and the two sides of the output shaft are respectively fixedly provided with a forward turbine and a reverse turbine located inside the housing. In the present invention, when a collapsible mast suddenly falls down due to unbalance, since the rotating shaft of the collapsible mast is connected to the output shaft, the output shaft is driven to rotate when the collapsible mast falls down, and at this time, under the action of the forward turbine and the reverse turbine, the hydraulic oil enters the housing through the oil filling pipe and fills the housing, and at this time, resistance is generated between the blades of the turbine and the hydraulic oil, and the resistance is output to the outside through the output shaft, so that the rotating shaft of the collapsible mast generates a certain resistance when it suddenly falls down, thereby effectively avoiding the problem of danger caused by the unbalanced and sudden fall of the collapsible mast.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic dampers, in particular to a self-circulating hydraulic damper. Background Art

[0002] A damper is a device that provides resistance to motion and dissipates kinetic energy. Various dampers (or shock absorbers) have long been used in the aerospace, aviation, military, firearms, automotive and other industries to reduce vibration and dissipate energy. It is a device that can quickly stop the movable part of the instrument at a stable deflection position. In seismic instruments, dampers are used to absorb the inherent vibration energy of the vibration system. The damping force is generally proportional to the speed of the vibration system. There are three main types: hydraulic dampers, gas dampers and electromagnetic dampers. Dampers play an important role in compensating for the very small friction and air resistance in the vibration pickup pendulum system and improving the frequency response.

[0003] Hydraulic dampers are used on collapsible masts as deceleration devices to prevent the masts from becoming unbalanced and suddenly falling down, causing danger. Collapsible masts refer to masts erected on both sides of the aircraft carrier deck. Its scientific name is collapsible mast or lifting mast. As the name suggests, it is not only a mast, but also a mast that can be erected or laid down.

[0004] In the prior art, the overall structure of the hydraulic damper is difficult to change, resulting in a small application range of the hydraulic damper. In addition, the existing hydraulic damper has a complex structure, is heavy, and is cumbersome to install, use, and maintain, resulting in troublesome operation during use. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a self-circulating hydraulic damper to solve the technical problems that the overall structure of the hydraulic damper in the prior art is difficult to change, resulting in a small application range of the hydraulic damper, and the existing hydraulic damper has a complex structure, heavy weight, and is cumbersome to install, use and maintain, resulting in troublesome operation during use.

[0006] To achieve the above object, the present invention provides the following technical solution: a self-circulating hydraulic damper, comprising a housing, an output shaft is rotatably connected inside the housing, the output shaft and the housing are rotatably connected via bearings, and the number of bearings is two groups, and a forward turbine and a reverse turbine located inside the housing are fixedly arranged on both sides of the output shaft;

[0007] Two groups of low-pressure cavities are formed between the shell and the forward turbine and the reverse turbine, and a high-pressure cavity is formed at the middle position between the forward turbine and the reverse turbine. Electromagnets are fixedly arranged on both sides of the shell exterior, and a connecting ring located inside the two groups of electromagnets is fixedly arranged on the outer side of the output shaft. The inner walls of the two groups of electromagnets are evenly slidably connected to multiple groups of extrusion friction blocks, and the inner walls of the extrusion friction blocks correspond to the connecting rings. The bottoms of the two groups of electromagnets are connected to connecting wires, and retaining rings are fixedly arranged between the two groups of electromagnets and the corresponding connecting rings. When the output shaft outputs resistance to the outside, the two groups of electromagnets are started synchronously, and the electromagnets generate magnetic force to move the multiple groups of extrusion friction blocks along the guide rod, so that the multiple groups of extrusion friction blocks squeeze the connecting ring fixed on the outer side of the output shaft to a certain extent, thereby increasing the resistance of the output shaft to the outside, and increasing the resistance of the unbalanced and suddenly falling mast, which can not only better avoid the problem of danger caused by the impact force generated by the mast falling, but also reduce the impact force of the mast falling, and effectively protect the structure on the mast;

[0008] An oil filling pipe and a circulating oil pipe are respectively connected to the two sides of the outside of the shell, and the oil filling pipe and the circulating oil pipe are connected to the two groups of low-pressure cavities, a tee is connected between the ends of the oil filling pipe and the circulating oil pipe, and the end of the tee is connected to an oil storage tank, a drain pipe is connected to the middle position of one end of the shell, and the drain pipe is connected to the high-pressure cavity, the end of the drain pipe is connected to the oil storage tank, a radiator is connected at the circulating oil pipe position, and the radiator plays a role in cooling the hydraulic oil.

[0009] By adopting the above technical solution, when the collapsible mast loses balance and suddenly falls down, since the rotating shaft of the collapsible mast is connected to the output shaft, the output shaft is driven to rotate when the collapsible mast falls down. At this time, under the action of the forward turbine and the reverse turbine, specifically, there is a low-pressure cavity between the outer sides of the forward turbine and the reverse turbine and the shell, and there is a high-pressure cavity between the forward turbine and the reverse turbine, and a pressure difference is generated between the low-pressure cavity and the high-pressure cavity, so that the hydraulic oil enters the shell through the oil filling pipe and fills the shell. At this time, resistance is generated between the blades of the turbine and the hydraulic oil, and the resistance is output to the outside through the output shaft, so that the rotating shaft of the collapsible mast falls down suddenly. A certain resistance is generated, thereby effectively avoiding the problem of danger caused by the sudden collapse of the collapsible mast due to imbalance, and the overall structure of the present invention is simple, the weight is small, and it is easy to install, use and maintain. The present invention is flexible and has a wide range of applications. The diameter, length and size of the shell can be combined in various ways to adapt to different installation spaces. The damping liquid can be replaced at will to adapt to different rotation speeds and resistances. The external circulation pipeline can be flexibly adjusted or even the entire external circulation pipeline can be cancelled to adapt to different usage intensities. After the internal liquid is drained, the two sets of turbines are only equivalent to the addition of two small-scale flywheels, with extremely small resistance and extremely low energy loss.

[0010] The present invention is further configured such that stop valves are provided at the oil filling pipe, the drain pipe and the three-way pipe, and the number of the stop valves is three groups.

[0011] By adopting the above technical solution, the stop valve plays a role in cutting off or connecting the hydraulic oil.

[0012] The present invention is further configured such that a fixed base matching with the shell is fixedly provided at the bottom, a support hole matching with the emptying pipe is provided inside the fixed base, and an anti-slip pad is fixedly provided at the bottom of the fixed base.

[0013] By adopting the above technical solution, the fixed base plays a role in supporting and fixing the shell, and the shell can also be fixed to the hull by bolts through the fixed base.

[0014] In summary, the present invention mainly has the following beneficial effects:

[0015] 1. In the present invention, when the collapsible mast loses balance and suddenly falls down, since the rotating shaft of the collapsible mast is connected to the output shaft, the output shaft is driven to rotate when the collapsible mast falls down. At this time, under the action of the forward turbine and the reverse turbine, specifically, there is a low-pressure cavity between the outer sides of the forward turbine and the reverse turbine and the shell, and there is a high-pressure cavity between the forward turbine and the reverse turbine, and a pressure difference is generated between the low-pressure cavity and the high-pressure cavity, so that the hydraulic oil enters the shell through the oil filling pipe and fills the shell. At this time, resistance is generated between the blades of the turbine and the hydraulic oil, and the resistance is output to the outside through the output shaft, so that the rotating shaft of the collapsible mast generates a pressure difference when it suddenly falls down. The invention has a certain resistance, thereby effectively avoiding the problem of danger caused by the sudden collapse of the unbalanced mast. The invention has a simple overall structure, a small weight, and is easy to install, use, and maintain. The invention is flexible and versatile, and has a wide range of applications. The diameter, length, and size of the shell can be combined in various ways to adapt to different installation spaces. The damping liquid can be replaced at will to adapt to different rotation speeds and resistances. The external circulation pipeline can be flexibly adjusted or even the entire external circulation pipeline can be cancelled to adapt to different use intensities. When the internal liquid is emptied, the two sets of turbines are only equivalent to adding two small-scale flywheels, and the resistance is extremely small, and the energy loss is extremely low.

[0016] 2. In the present invention, when the output shaft outputs resistance to the outside, two groups of electromagnets are started synchronously, and the electromagnets generate magnetic force to move the multiple groups of extrusion friction blocks along the guide rod, so that the multiple groups of extrusion friction blocks squeeze the connecting ring fixed on the outside of the output shaft to a certain extent, thereby increasing the resistance of the output shaft to the outside, and increasing the resistance of the unbalanced and sudden fall of the collapsible mast. This can not only better avoid the problem of danger caused by the impact force generated by the fall of the mast, but also reduce the impact force of the fall of the mast, and effectively protect the structure on the mast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention from a first viewing angle;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0020] Figure 4 It is an exploded view of the internal structure of the present invention;

[0021] Figure 5 It is a partial structural exploded view of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the second viewing angle of the present invention;

[0023] Figure 7 It is a system schematic diagram of the present invention.

[0024] In the figure: 1. housing; 2. output shaft; 3. forward turbine; 4. reverse turbine; 5. low-pressure cavity; 6. high-pressure cavity; 7. oil filling pipe; 8. circulating oil pipe; 9. radiator; 10. oil storage tank; 11. drain pipe; 12. stop valve; 13. electromagnet; 14. connecting ring; 15. extrusion friction block; 16. guide rod; 17. retaining ring; 18. bearing; 19. connecting wire; 20. fixed base. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following describes an embodiment of the present invention based on its overall structure.

[0027] A self-circulating hydraulic damper, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, it includes a shell 1, an output shaft 2 is rotatably connected inside the shell 1, the output shaft 2 and the shell 1 are rotatably connected through bearings 18, and the number of bearings 18 is two groups, and a forward turbine 3 and a reverse turbine 4 located inside the shell 1 are fixedly arranged on both sides of the outside of the output shaft 2, two groups of low-pressure cavities 5 are formed between the shell 1 and the forward turbine 3 and the reverse turbine 4, and a high-pressure cavity 6 is formed at the middle position between the forward turbine 3 and the reverse turbine 4. The low-pressure cavity 5 is between the outer sides of the forward turbine 3 and the reverse turbine 4 and the shell 1, and the high-pressure cavity 6 is between the forward turbine 3 and the reverse turbine 4, thereby generating a pressure difference between the low-pressure cavity 5 and the high-pressure cavity 6, so that the hydraulic oil enters the shell 1 through the oil filling pipe 7 and fills the shell 1, and at this time, resistance is generated between the blades of the turbine and the hydraulic oil, and the resistance is output to the outside through the output shaft 2, so that the rotating shaft of the collapsible mast generates a certain resistance when it suddenly falls down, thereby effectively avoiding the problem of danger caused by the sudden unbalance of the collapsible mast.

[0028] Electromagnets 13 are fixedly arranged on both sides of the outer side of the shell 1, and a connecting ring 14 located inside the two groups of electromagnets 13 is fixedly arranged on the outer side of the output shaft 2. The inner walls of the two groups of electromagnets 13 are evenly slidably connected with multiple groups of extrusion friction blocks 15, and the inner walls of the extrusion friction blocks 15 correspond to the connecting ring 14. The bottoms of the two groups of electromagnets 13 are connected with connecting wires 19, and a retaining ring 17 is fixedly arranged between the two groups of electromagnets 13 and the corresponding connecting rings 14. The two groups of electromagnets 13 are started synchronously, and the electromagnets 13 generate magnetic force to move the multiple groups of extrusion friction blocks 15 along the guide rod 16, so that the multiple groups of extrusion friction blocks 15 squeeze the connecting ring 14 fixed on the outer side of the output shaft 2 to a certain extent, thereby increasing the resistance of the output shaft 2 to the external output, and increasing the resistance of the unbalanced mast to suddenly fall down, which can not only better avoid the problem of danger caused by the impact force generated by the fall of the mast, but also reduce the impact force of the fall of the mast, and effectively protect the structure on the mast;

[0029] An oil filling pipe 7 and a circulating oil pipe 8 are respectively connected to the two sides of the outside of the shell 1, and the oil filling pipe 7 and the circulating oil pipe 8 are connected to the two groups of low-pressure cavities 5. A tee is connected between the ends of the oil filling pipe 7 and the circulating oil pipe 8, and the end of the tee is connected to an oil storage tank 10. A drain pipe 11 is connected to the middle position of one end of the shell 1, and the drain pipe 11 is connected to the high-pressure cavity 6, and the end of the drain pipe 11 is connected to the oil storage tank 10. A radiator 9 is connected at the position of the circulating oil pipe 8, and the radiator 9 plays a role in cooling the hydraulic oil.

[0030] See also Figure 1 and Figure 6 The oil filling pipe 7, the drain pipe 11 and the three-way pipe are all provided with stop valves 12, and the number of the stop valves 12 is three groups. By setting the above structure, the stop valve 12 plays the role of cutting off or connecting the hydraulic oil.

[0031] See also Figure 1 and Figure 6 A fixed base 20 matching with the shell 1 is fixedly arranged at the bottom, a supporting hole matching with the emptying pipe 11 is opened inside the fixed base 20, and an anti-slip pad is fixedly arranged at the bottom of the fixed base 20. The present invention arranges the above structure, wherein the fixed base 20 plays a supporting and fixing role for the shell 1, and the shell 1 can also be fixed to the hull by bolts through the fixed base 20.

[0032] The working principle of the present invention is as follows: when in use, the present invention is integrally installed and fixed near the collapsible mast, so that the rotating shaft of the collapsible mast and the output shaft 2 are fixedly connected, and then the stop valve 12 located on the oil filling pipe 7 and the circulating oil pipe 8 is opened, so that the hydraulic oil inside the oil storage tank 10 is connected to the inside of the housing 1 through the oil filling pipe 7 and the circulating oil pipe 8;

[0033] When the collapsible mast loses balance and suddenly falls down, since the rotating shaft of the collapsible mast is connected to the output shaft 2, the collapsible mast will drive the output shaft 2 to rotate when it falls down. At this time, under the action of the forward turbine 3 and the reverse turbine 4;

[0034] Specifically, there is a low-pressure cavity 5 between the outer sides of the forward turbine 3 and the reverse turbine 4 and the housing 1, and there is a high-pressure cavity 6 between the forward turbine 3 and the reverse turbine 4, and a pressure difference is generated between the low-pressure cavity 5 and the high-pressure cavity 6, so that the hydraulic oil enters the housing 1 through the oil filling pipe 7 and fills the housing 1. At this time, resistance is generated between the blades of the turbine and the hydraulic oil, and the resistance is output to the outside through the output shaft 2, so that the rotating shaft of the collapsible mast generates a certain resistance when it suddenly falls down, thereby effectively avoiding the problem of danger caused by the sudden collapse of the collapsible mast due to imbalance;

[0035] Specifically, the present invention has a simple overall structure, a light weight, and is easy to install, use, and maintain. The present invention is flexible and versatile, and has a wide range of applications. The diameter and length of the housing 1 and the sizes of the two turbines can be combined in various ways to adapt to different installation spaces. The damping liquid can be replaced at will to adapt to different rotation speeds and resistances. The external circulation pipeline can be flexibly adjusted or even the entire external circulation pipeline can be cancelled to adapt to different use intensities. When the internal liquid is emptied, the two turbines are equivalent to adding two small-scale flywheels, and the resistance is extremely small, and the energy loss is extremely low.

[0036] Furthermore, when the output shaft 2 outputs resistance to the outside, the two groups of electromagnets 13 are started synchronously, and the electromagnets 13 generate magnetic force to move the multiple groups of extrusion friction blocks 15 along the guide rod 16, so that the multiple groups of extrusion friction blocks 15 squeeze the connecting ring 14 fixed on the outside of the output shaft 2 to a certain extent, thereby increasing the resistance of the output shaft 2 to the outside, and increasing the resistance of the unbalanced mast to suddenly fall down, which can not only better avoid the problem of danger caused by the impact force generated by the fall of the mast, but also reduce the impact force of the fall of the mast, effectively protecting the structure on the mast;

[0037] Furthermore, by arranging the forward turbine 3 and the reverse turbine 4 of different directions and efficiencies inside the housing 1, while increasing the resistance, the hydraulic oil is driven to enter the radiator 9 through the circulating oil pipe 8 for heat dissipation, thereby completing the transfer of mechanical energy to the internal energy of the hydraulic oil and then to the internal energy of the external air;

[0038] Specifically, the present invention as a whole can also be used for equipment that requires the application of resistance, such as fitness equipment, auxiliary braking of mechanical equipment, and deceleration of large trucks for long downhill driving.

[0039] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A self-circulating hydraulic damper, comprising a housing (1), characterized in that: An output shaft (2) is rotatably connected inside the housing (1), and a forward turbine (3) and a reverse turbine (4) located inside the housing (1) are respectively fixedly arranged on both sides of the outside of the output shaft (2); Two groups of low-pressure cavities (5) are formed between the housing (1) and the forward turbine (3) and the reverse turbine (4), and a high-pressure cavity (6) is formed at the middle position between the forward turbine (3) and the reverse turbine (4). Electromagnets (13) are fixedly arranged on both sides of the exterior of the housing (1). A connecting ring (14) located inside the two groups of electromagnets (13) is fixedly arranged on the outer side of the output shaft (2). Multiple groups of extrusion friction blocks (15) are evenly slidably connected to the inner walls of the two groups of electromagnets (13), and the inner walls of the extrusion friction blocks (15) correspond to the connecting ring (14). An oil injection pipe (7) and a circulating oil pipe (8) are respectively connected to both sides of the exterior of the housing (1), and the oil injection pipe (7) and the circulating oil pipe (8) are in communication with the two groups of low-pressure cavities (5). A three-way pipe is connected between the ends of the oil injection pipe (7) and the circulating oil pipe (8), and the end of the three-way pipe is connected to an oil storage tank (10).

2. A self-circulating hydraulic damper according to claim 1, characterized in that: A drain pipe (11) is connected to the middle position of one end of the shell (1), and the drain pipe (11) is in communication with the high-pressure cavity (6), and the end of the drain pipe (11) is connected to the oil storage tank (10).

3. A self-circulating hydraulic damper according to claim 2, characterized in that: The oil filling pipe (7), the drain pipe (11) and the three-way pipe are all provided with stop valves (12), and the number of the stop valves (12) is three groups.

4. A self-circulating hydraulic damper according to claim 1, characterized in that: The circulating oil pipe (8) is connected to a radiator (9), and the radiator (9) plays a role in cooling the hydraulic oil.

5. The self-circulating hydraulic damper according to claim 1, characterized in that: The output shaft (2) and the housing (1) are rotatably connected via bearings (18), and the number of bearings (18) is two groups.

6. A self-circulating hydraulic damper according to claim 1, characterized in that: The bottoms of the two groups of electromagnets (13) are connected with connecting wires (19), and retaining rings (17) are fixedly arranged between the two groups of electromagnets (13) and the corresponding connecting rings (14).

7. A self-circulating hydraulic damper according to claim 2, characterized in that: A fixed base (20) matching with the housing (1) is fixedly arranged at the bottom thereof, a support hole matching with the drain pipe (11) is provided inside the fixed base (20), and an anti-slip pad is fixedly arranged at the bottom of the fixed base (20).

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