Balancing rod of damper

Abstract

The damper balancing rod comprises a steel cylinder, a cylinder cavity is formed in the steel cylinder, a guide sealing assembly is arranged at the top of the cylinder cavity, an isolation assembly is movably connected to the bottom of the cylinder cavity, a piston rod penetrates through the guide sealing assembly to reach the inner side of the cylinder cavity, and a piston assembly is arranged at the end, located on the inner side of the cylinder cavity, of the piston rod. By using a reset spring, a valve block, a valve element, a piston gasket and a first communicating hole, the piston rod can be suspended at any extension length, the elastic force of the reset spring to the valve block during suspension is larger than the oil thrust borne by the valve block, the valve block abuts against the valve element, and an O-shaped ring is extruded by oil to block a gap between the valve block and the valve element; the piston assembly does not have extra power to burst through the O-shaped ring, so that the piston assembly can be maintained at the position, and the extension length of the balance rod is kept unchanged.

Description

Technical Field

[0001] This invention belongs to the field of dampers, specifically a damper balance bar. Background Technology

[0002] A damper is a device that provides resistance to motion and dissipates kinetic energy. Various types of dampers (or shock absorbers) have long been used in industries such as aerospace, aviation, military, artillery, and automobiles to reduce vibration and dissipate energy. Since the 1970s, these technologies have been gradually applied to structural engineering projects such as buildings, bridges, and railways, and their development has been very rapid. There are three main types: liquid dampers, gas dampers, and electromagnetic dampers. Most existing dampers impede compression or tension strokes to achieve damping, but they cannot achieve suspension at any position. Therefore, a damper balance bar has been proposed. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: most existing dampers impede the compression or extension stroke to achieve damping, but cannot be hovered at any position.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a damper balance bar, comprising a movable component for damping and a carrier for accommodating the movable component;

[0006] The carrier has a chamber, and a movable component is movably connected inside the chamber. The chamber includes two parts: an oil chamber and a gas chamber. The oil chamber is incompressible, while the gas chamber is compressible.

[0007] The moving part includes a piston assembly, on which there is a pressure difference between the upper and lower sides. The resistance generated by the piston rod's extension and retraction movement is the extension force.

[0008] The carrier includes a steel cylinder with a cavity inside. A guide sealing assembly is provided at the top of the cavity, and an isolation assembly is movably connected to the bottom of the cavity. A piston rod passes through the guide sealing assembly to reach the inside of the cavity. A piston assembly is provided on the end of the piston rod located inside the cavity, and the piston assembly is slidably connected to the inner wall of the cavity.

[0009] The piston assembly includes a return spring, a valve block, a first connecting hole, a valve core, a piston gasket, a guide washer, an O-ring, and a second connecting hole. The piston gasket, valve core, and guide washer are sequentially fitted onto the piston rod. The valve block is movably fitted onto the outer side of the guide washer, and the return spring is fitted onto the outer side of the valve block. One end of the return spring abuts against the guide washer, and the other end of the return spring abuts against one end of the valve block. The valve core is located between the piston gasket and the guide washer. Several first connecting holes are opened on the end of the piston gasket near the valve core. An O-ring is movably fitted onto the outer side of the valve core. Several second connecting holes are evenly opened on the valve block. The outer rings of the valve block and the piston gasket are slidably connected to the inner wall of the cylinder cavity.

[0010] As a preferred technical solution for a damper balance bar, the piston rod includes a connecting rod one, a threaded post one, a connecting rod two, and an O-ring. The connecting rod two is movably inserted into the inner side of the cylinder cavity. The connecting rod two is provided with the connecting rod one at one end located inside the cylinder cavity. The connecting rod one is provided with the threaded post one, and a nut is threadedly connected to the threaded post one. The nut abuts against a guide washer. The connecting rod one is sleeved with the guide washer. A piston gasket is sleeved on the connecting rod two.

[0011] The nut locks the position of the guide washer, valve core, and piston gasket, fixing them to the piston rod.

[0012] As a preferred technical solution for a damper balance bar, the isolation assembly includes a circular block and a sealing ring. The circular block is slidably connected inside the cylindrical cavity, and the sealing ring is sleeved on the outer side of the circular block.

[0013] The circular block divides the cylindrical cavity into two parts: the lower part of the circular block is a nitrogen chamber, and the upper part of the circular block is an oil chamber. The nitrogen chamber contains nitrogen gas, and the oil chamber contains hydraulic oil.

[0014] As a preferred technical solution for a damper balance bar, the portion of the connecting rod two located outside the cylinder cavity is provided with a threaded post two, and a sealing ring three is sleeved on the outer side of the piston gasket away from the connecting rod one.

[0015] The sealing ring can improve the airtightness between the piston gasket and the cylinder cavity.

[0016] As a preferred technical solution for a damper balance bar, the isolation assembly includes a closed ring located at the top of the inner side of the cylinder cavity. The connecting rod two is movably inserted into the closed ring. The isolation assembly also includes a sealing cylinder, a sealing ring two, and a sealing element. The sealing cylinder and the sealing element are arranged sequentially in the cylinder cavity. The sealing element is located between the sealing cylinder and the closed ring. The sealing ring two is sleeved on the outer side of the sealing cylinder. A circular groove is opened at the end of the sealing cylinder facing the sealing ring one.

[0017] When hydraulic oil is squeezed towards the sealing cylinder, the hydraulic oil squeezes the sealing cylinder, causing the sealing cylinder to press against the sealing seat. When the hydraulic oil enters the circular groove, it will press against the inner wall of the circular groove of the sealing cylinder, making the sealing cylinder more airtight.

[0018] As a preferred technical solution for a damper balance bar, the sealing element includes a sealing seat, a compression groove, a closing groove, and a toothed ridge. The inner ring wall of the sealing seat is configured with a toothed ridge. The sealing seat has a compression groove at one end facing the sealing cylinder. The outer ring of the sealing seat is recessed with several closing grooves. The compression groove is in the shape of an ice cream cone.

[0019] When the piston gasket is inserted into the circular groove, it will press against the inner wall of the circular groove of the sealing cylinder, making the sealing cylinder more airtight.

[0020] When hydraulic oil leaks into the extrusion groove, it causes the inner wall of the extrusion groove to deform under the pressure of the hydraulic oil, which in turn deforms the toothed ridges and the closed groove, thus increasing the airtightness.

[0021] The beneficial effects of the damper balance bar of the present invention are as follows: by using a return spring, valve block, valve core, piston gasket and connecting hole one, the piston rod can be suspended at any extension length. When suspended, the elastic force of the return spring on the valve block is greater than the oil thrust on the valve block. The valve block is close to the valve core. The O-ring is squeezed by the oil to block the gap between the valve block and the valve core. The piston assembly has no additional power to push open the O-ring, so that the piston assembly can be maintained in this position and the extension length of the balance bar remains unchanged.

[0022] By using the sealing seat, extrusion groove, sealing groove and toothed ridge, when hydraulic oil leaks into the extrusion groove, the hydraulic oil compresses the inner wall of the extrusion groove and deforms the toothed ridge and sealing groove, which greatly improves the airtightness of the device. By using the piston gasket and sealing cylinder, when the piston gasket is inserted into the circular groove, it will compress the inner wall of the circular groove of the sealing cylinder, making the sealing cylinder more airtight. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 3 For the present invention Figure 1A partially enlarged structural diagram of part A in the middle;

[0027] Figure 4 For the present invention Figure 1 A magnified schematic diagram of part B in the middle section.

[0028] Reference numerals: 1. Steel cylinder; 2. Cylinder cavity; 3. Connecting rod one; 4. Threaded post one; 5. Nut; 6. Sealing ring; 7. Return spring; 8. Valve block; 9. Connecting rod two; 10. Connecting hole one; 11. Valve core; 12. Piston gasket; 13. Guide washer; 14. Circular block; 15. Sealing ring one; 16. Threaded post three; 17. Sealing cylinder; 18. Sealing ring two; 19. Threaded post two; 20. Sealing element; 21. Sealing seat; 211. Extrusion groove; 212. Sealing groove; 213. Toothed ridge; 214. O-ring; 22. Connecting hole two; 23. Sealing ring four; 24. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0033] like Figures 1-4 As shown, the present invention proposes a damper balance bar, including a steel cylinder 1, a cylindrical cavity 2 is provided inside the steel cylinder 1, a guide sealing assembly is provided at the top of the cylindrical cavity 2, an isolation assembly is movably connected to the bottom of the cylindrical cavity 2, a piston rod passes through the guide sealing assembly to reach the inner side of the cylindrical cavity 2, a piston assembly is provided on the end of the piston rod located on the inner side of the cylindrical cavity 2, and the piston assembly is slidably connected to the inner wall of the cylindrical cavity 2;

[0034] The piston assembly includes a return spring 7, a valve block 8, a first connecting hole 10, a valve core 11, a piston gasket 12, a guide washer 13, an O-ring 22, and a second connecting hole 23. The piston gasket 12, the valve core 11, and the guide washer 13 are sequentially fitted onto the piston rod. The valve block 8 is movably fitted onto the outer side of the guide washer 13, and the return spring 7 is fitted onto the outer side of the valve block 8. One end of the return spring 7 abuts against the guide washer 13, and the other end of the return spring 7 abuts against one end of the valve block 8. The valve core 11 is located between the piston gasket 12 and the guide washer 13. Several first connecting holes 10 are opened on the end of the piston gasket 12 near the valve core 11. An O-ring 22 is movably fitted onto the outer side of the valve core 11. Several second connecting holes 23 are evenly opened on the valve block 8. The outer rings of the valve block 8 and the piston gasket 12 are slidably connected to the inner wall of the cylinder cavity 2.

[0035] The piston rod includes a connecting rod 3, a threaded post 4, a connecting rod 9, and an O-ring 22. The connecting rod 9 is movably inserted into the inner side of the cylinder cavity 2. The connecting rod 3 is provided at one end of the connecting rod 9 located inside the cylinder cavity 2. The threaded post 4 is provided on the connecting rod 3. A nut 5 is threadedly connected to the threaded post 4. The nut 5 abuts against the guide washer 13. The connecting rod 3 is sleeved with the guide washer 13. A piston gasket 12 is sleeved on the connecting rod 9.

[0036] Nut 5 can lock the positions of guide washer 13, valve core 11 and piston gasket 12, so that guide washer 13, valve core 11 and piston gasket 12 are fixed on piston rod.

[0037] The isolation assembly includes a circular block 14 and a sealing ring 15. The circular block 14 is slidably connected inside the cylindrical cavity 2, and the sealing ring 15 is sleeved on the outer side of the circular block 14.

[0038] The circular block 14 divides the cylindrical cavity 2 into two parts. The lower side of the circular block 14 is a nitrogen chamber, and the upper side of the circular block 14 is an oil chamber. The nitrogen chamber contains nitrogen gas, and the oil chamber contains hydraulic oil.

[0039] The portion of the connecting rod 29 located outside the cylinder cavity 2 is provided with a threaded post 20, and a sealing ring 3 19 is sleeved on the outer side of the piston gasket 12 at the end away from the connecting rod 3.

[0040] The sealing ring 319 can improve the airtightness between the piston gasket 12 and the cylinder cavity 2.

[0041] The isolation assembly includes a sealing ring 6, which is located at the top of the inner side of the cylindrical cavity 2. The connecting rod 9 is movably inserted into the sealing ring 6. The isolation assembly also includes a sealing cylinder 17, a sealing ring 18, and a sealing element 21. The sealing cylinder 17 and the sealing element 21 are arranged sequentially in the cylindrical cavity 2. The sealing element 21 is located between the sealing cylinder 17 and the sealing ring 6. The sealing ring 18 is sleeved on the outer side of the sealing cylinder 17. A circular groove is opened at the end of the sealing cylinder 17 facing the sealing ring 15.

[0042] When the hydraulic oil is squeezed toward the sealing cylinder 17, the hydraulic oil squeezes the sealing cylinder 17, causing the sealing cylinder 17 to press against the sealing seat 211. When the hydraulic oil enters the circular groove, it will press against the inner wall of the circular groove of the sealing cylinder 17, making the sealing cylinder 17 more airtight.

[0043] The sealing element 21 includes a sealing seat 211, a compression groove 212, a sealing groove 213, and a toothed ridge 214. The inner ring wall of the sealing seat 211 is provided with a toothed ridge 214. The end of the sealing seat 211 facing the sealing cylinder 17 is provided with a compression groove 212. The outer ring of the sealing seat 211 is recessed with several sealing grooves 213. The compression groove 212 is in the shape of an ice cream tube.

[0044] When hydraulic oil leaks into the extrusion groove 212, the hydraulic oil causes the inner wall of the extrusion groove 212 to deform, causing the toothed ridge 214 and the closed groove 213 to deform, thereby increasing the airtightness.

[0045] The bottom end of the steel cylinder 1 is provided with a threaded post 3 16, the inner side of the valve core 11 is provided with a sealing ring 4 24, the sealing ring 4 24 is sleeved with the connecting rod 1 3, and the outer side of the valve block 8 is sleeved with a return spring 7.

[0046] The circular block 14 divides the cylindrical cavity 2 into two parts. The lower side of the circular block 14 is a nitrogen chamber, and the upper side of the circular block 14 is an oil chamber. The nitrogen chamber contains nitrogen gas, and the oil chamber contains hydraulic oil.

[0047] The sealing ring 319 is movably inserted into the circular groove.

[0048] The specific implementation method is as follows: by utilizing the pressure difference between the upper and lower sides of the piston assembly, the piston rod is made to extend and retract, generating resistance, i.e., extension force. When the piston assembly moves in the oil chamber, the incompressibility of the liquid is used to reduce the response speed of the valve core.

[0049] During the hovering phase: the spring force of the return spring 7 on the valve block 8 is greater than the hydraulic thrust on the valve block 8, the valve block 8 is close to the valve core 11, and the O-ring 22 is squeezed by the hydraulic fluid to block the gap between the valve block 8 and the valve core 11. At this time, the valve core 11 is stationary, and the hydraulic oil on both sides of the piston cannot flow; the piston rod is stationary.

[0050] Compression stage: The oil pushes the O-ring 22 close to the piston gasket 12 and moves away from the gap between the valve block 8 and the valve core 11. The connecting hole 10 on the piston assembly is in a smooth state. The oil can pass through the gap between the valve block 8 and the valve core 11. The oil can flow on both sides of the gap between the valve block 8 and the valve core 11. The nitrogen in the nitrogen chamber under the circular block 14 can be compressed. The compression force is controlled by controlling the filling pressure of the nitrogen chamber.

[0051] During the stretching phase: When the piston rod is stretched, the pressure of the oil on the valve block 8 is greater than the elastic force of the return spring 7, causing the valve block 8 to compress the return spring 7 and move away from the valve core 11. The gap between the valve block 8 and the valve core 11 widens, and the O-ring 22 moves closer to the gap between the valve block 8 and the valve core 11, obstructing the passage of oil. The hydraulic oil on both sides of the piston switches flow, and the piston rod begins to extend. The stretching force is the starting force of the valve block 8.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A damper balance bar, characterized in that: Includes moving parts for damping and a carrier for housing the moving parts; The carrier has a chamber, and a movable component is movably connected inside the chamber. The chamber includes two parts: an oil chamber and a gas chamber. The oil chamber is incompressible, while the gas chamber is compressible. The moving part includes a piston assembly, on which there is a pressure difference between the upper and lower sides. The resistance generated by the piston rod's extension and retraction movement is the extension force.

2. The damper balance bar according to claim 1, characterized in that: The carrier includes a steel cylinder (1), the inside of which is a cylinder cavity (2), a guide sealing assembly is provided at the top of the cylinder cavity (2), an isolation assembly is movably connected to the bottom of the cylinder cavity (2), a piston rod passes through the guide sealing assembly to reach the inside of the cylinder cavity (2), and a piston assembly is provided on one end of the piston rod located inside the cylinder cavity (2); A piston gasket (12), a valve core (11), and a guide washer (13) are sequentially fitted onto the piston rod. A valve block (8) is movably fitted onto the outer side of the guide washer (13). A return spring (7) is fitted onto the outer side of the valve block (8). One end of the return spring (7) abuts against the guide washer (13), and the other end of the return spring (7) abuts against one end of the valve block (8). Several connecting holes (10) are opened on the piston gasket (12) near the valve core (11). An O-ring (22) is movably fitted onto the outer side of the valve core (11). Several connecting holes (23) are evenly opened on the valve block (8).

3. A damper balance bar according to claim 2, characterized in that: The piston assembly includes a return spring (7), a valve block (8), a connecting hole one (10), a valve core (11), a piston gasket (12), a guide washer (13), an O-ring (22), and a connecting hole two (23). The piston rod includes a connecting rod one (3), a threaded post one (4), a connecting rod two (9), and an O-ring (22). The second connecting rod (9) is movably inserted into the inner side of the cylinder (2). One end of the second connecting rod (9) located inside the cylinder (2) is provided with a first connecting rod (3). A first threaded post (4) is provided on the first connecting rod (3). A nut (5) is threadedly connected to the first threaded post (4). The nut (5) abuts against the guide washer (13). The first connecting rod (3) is sleeved with the guide washer (13). A piston gasket (12) is sleeved on the second connecting rod (9).

4. A damper balance bar according to claim 3, characterized in that: The isolation assembly includes a circular block (14) and a sealing ring (15). The circular block (14) is slidably connected inside the cylindrical cavity (2), and the sealing ring (15) is sleeved on the outside of the circular block (14).

5. A damper balance bar according to claim 3, characterized in that: The connecting rod 2 (9) is provided with a threaded post 2 (20) on the part located outside the cylinder cavity (2), and a sealing ring 3 (19) is sleeved on the outer side of the piston gasket (12) away from the connecting rod 1 (3).

6. A damper balance bar according to claim 3, characterized in that: The isolation assembly includes a sealing ring (6), which is located at the top of the inner side of the cylindrical cavity (2), and the connecting rod (9) is movably connected to the sealing ring (6).

7. A damper balance bar according to claim 6, characterized in that: The isolation assembly also includes a sealing cylinder (17), a second sealing ring (18), and a sealing element (21). The cylinder cavity (2) is provided with the sealing cylinder (17) and the sealing element (21) in sequence. The sealing element (21) is located between the sealing cylinder (17) and the sealing ring (6). The second sealing ring (18) is sleeved on the outside of the sealing cylinder (17). A circular groove is provided at one end of the sealing cylinder (17) facing the first sealing ring (15).

8. A damper balance bar according to claim 7, characterized in that: The sealing element (21) includes a sealing seat (211), an extrusion groove (212), a sealing groove (213), and a toothed ridge (214). The inner wall of the sealing seat (211) is provided with a toothed ridge (214). The sealing seat (211) has an extrusion groove (212) at one end facing the sealing cylinder (17). The outer ring of the sealing seat (211) is recessed with several sealing grooves (213). The extrusion groove (212) is in the shape of an ice cream cone.

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