CN219242534U - Built-in air bag type double-rod linear magnetorheological damper - Google Patents
Built-in air bag type double-rod linear magnetorheological damper Download PDFInfo
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- CN219242534U CN219242534U CN202320701382.5U CN202320701382U CN219242534U CN 219242534 U CN219242534 U CN 219242534U CN 202320701382 U CN202320701382 U CN 202320701382U CN 219242534 U CN219242534 U CN 219242534U
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Abstract
The utility model provides a built-in air bag type double-rod linear magnetorheological damper which comprises a cylinder barrel, a wire core, a wire inlet shaft, a driven shaft, a wire, an excitation coil and an air bag, wherein the cylinder barrel is arranged on the wire core; a magnetorheological fluid is arranged in the cylinder barrel; the wire core is slidably arranged in the cylinder barrel, and two ends of the wire core in the sliding direction are respectively connected with the wire inlet shaft and the driven shaft; the wire inlet shaft and the driven shaft are arranged outside the cylinder barrel at one end far away from the wire core; a central through hole for the wire to pass through is arranged on the wire inlet shaft; a groove for accommodating the exciting coil is formed in the wire core; the wire core is provided with a pore canal for connecting the groove with the central through hole, and the conducting wire is connected with the nano excitation coil through the pore canal; the air bags are arranged at one end or two ends in the cylinder barrel. The utility model solves the problems of difficult pressure release in the cylinder barrel and easy leakage of magnetorheological fluid, and simultaneously, the potential safety hazard is eliminated.
Description
Technical Field
The utility model relates to the technical field of dampers, in particular to a built-in air bag type double-rod linear magnetorheological damper.
Background
The damper is a device for damping mechanical vibration by utilizing damping characteristics, such as a double-rod linear magnetorheological damper. The existing double-rod linear magneto-rheological damper needs to be filled with magneto-rheological fluid (Newtonian fluid with low viscosity when no magnetic field exists outside, and the magneto-rheological fluid is guest-han fluid with high viscosity and low fluidity when an external magnetic field exists). However, it is difficult to fill the cylinder with magnetorheological fluid, so that part of the air exists in the cylinder; meanwhile, partial air exists in the magnetorheological fluid. Therefore, the presence of air in the cylinder cannot be avoided. The internal temperature of the cylinder barrel is increased when the damper works, and the volumes of air and magnetorheological fluid are expanded, so that the internal pressure of the cylinder barrel is increased, the pressure release in the cylinder barrel is difficult, the potential safety hazard is increased, and the damping force of the damper is also influenced; in addition, leakage of magnetorheological fluids is also easily caused.
Disclosure of Invention
The utility model aims to provide a double-rod linear magnetorheological damper with an internal air bag, which has the following specific technical scheme that:
a built-in air bag type double-rod linear magnetorheological damper comprises a cylinder barrel, a wire core, a wire inlet shaft, a driven shaft, a wire, an excitation coil and an air bag;
a magnetorheological fluid is arranged in the cylinder barrel; the wire core is slidably arranged in the cylinder barrel, and two ends of the wire core in the sliding direction are respectively connected with the wire inlet shaft and the driven shaft; the wire inlet shaft and the driven shaft are arranged outside the cylinder barrel at one end far away from the wire core;
a central through hole for the wire to pass through is arranged on the wire inlet shaft; a groove for accommodating the exciting coil is formed in the wire core; the wire core is provided with a pore canal for connecting the groove with the central through hole, and the conducting wire is connected with the nano excitation coil through the pore canal;
the air bags are arranged at one end or two ends in the cylinder barrel.
Optionally, the built-in air bag type double-rod linear magnetorheological damper further comprises a fixing sleeve for protecting an air bag, the fixing sleeve is arranged on the inner wall of the cylinder barrel and encloses an opening cavity with an opening towards the wire core with the inner wall of the cylinder barrel, and the air bag is arranged in the opening cavity.
Optionally, the air bag comprises a valve core, and a connecting hole for the valve core to penetrate is formed in the cylinder barrel.
Optionally, the built-in air bag type double-rod linear magnetorheological damper further comprises a first sealing end cover and a second sealing end cover which are arranged at two ends of the cylinder barrel; the first sealing end cover and the second sealing end cover are respectively in threaded connection with the inner walls of the two ends of the cylinder barrel;
the wire inlet shaft penetrates through the first sealing end cover; the driven shaft penetrates through the second sealing end cover.
Optionally, the built-in air bag type double-rod linear magnetorheological damper further comprises a first sealing ring and a second sealing ring, wherein the first sealing ring is arranged on the first sealing end cover and is clung to the cylinder barrel; the second sealing ring is arranged on the second sealing end cover and is clung to the cylinder barrel.
Optionally, the built-in air bag type double-rod linear magnetorheological damper further comprises a first linear copper sleeve and a second linear copper sleeve; the first sealing end cover is provided with a first mounting hole for mounting the first linear copper sleeve, and the wire inlet shaft penetrates through the first linear copper sleeve; the second sealing end cover is provided with a second mounting hole for mounting the second linear copper sleeve, and the driven shaft penetrates through the second linear copper sleeve.
Optionally, the built-in air bag type double-rod linear magnetorheological damper further comprises anti-collision gaskets, wherein the anti-collision gaskets are arranged at two ends of the core in the sliding direction in the cylinder barrel.
The application of the technical scheme of the utility model has at least the following beneficial effects:
when the wire is electrified, the exciting coil is connected with the wire, so that a magnetic field is generated around the wire core, magnetic particles in magnetorheological fluid in the cylinder barrel are orderly arranged along magnetic lines, the state of the magnetic particles is changed from fluid to viscoelastic solid, and the volume of the magnetorheological fluid is increased; simultaneously, damping operation also can lead to the inside temperature of cylinder to increase, and the volume of air and magnetorheological fluid all can take place to expand, through the gasbag can effectively cushion the volume change of air and magnetorheological fluid in the cylinder, has solved the difficult problem of revealing with magnetorheological fluid of pressure release in the cylinder, simultaneously, has stopped the potential safety hazard.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic cross-sectional view of a dual rod linear magnetorheological damper with an air bag inside according to embodiment 1 of the present utility model;
wherein, 1, a cylinder barrel, 2, a wire core, 3, a wire inlet shaft, 4, a driven shaft, 5, a wire, 6, an exciting coil, 7, an air bag, 7.1, a valve core, 8, a fixed sleeve, 9 and a first sealing end cover, 10, second seal end cover, 11, first sealing washer, 12, second sealing washer, 13, first straight line copper sheathing, 14, second straight line copper sheathing, 15, anticollision gasket.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
Example 1:
referring to fig. 1, a built-in air bag type double-rod linear magnetorheological damper comprises a cylinder barrel 1, a wire core 2, a wire inlet shaft 3, a driven shaft 4, a wire 5, an excitation coil 6 and an air bag 7;
a magnetorheological fluid is arranged in the cylinder barrel 1; the wire core 2 is slidably arranged in the cylinder barrel 1, and two ends of the wire core in the sliding direction are respectively connected with the wire inlet shaft 3 and the driven shaft 4; the wire inlet shaft 3 and the driven shaft 4 are arranged outside the cylinder barrel 1 at one end far away from the wire core 2;
a central through hole for the penetration of a lead 5 is arranged on the lead-in shaft 3; grooves for accommodating the exciting coils 6 are formed in the wire core 2 (the grooves and the exciting coils 6 are in one-to-one correspondence, and different numbers of the grooves and the exciting coils 6 can be arranged according to specific requirements of damping effects; in the embodiment 1, the number of the grooves and the number of the exciting coils 6 are three); a pore canal for connecting the groove with the central through hole is arranged on the wire core 2, and the lead 5 is connected with the nano excitation coil 6 through the pore canal;
the air bags 7 are disposed at both ends in the cylinder tube 1.
The built-in air bag type double-rod linear magnetorheological damper is characterized by further comprising two fixing sleeves 8 for protecting the air bags 7, wherein the number of the fixing sleeves 8 is two, the fixing sleeves are respectively arranged on the inner walls of the two ends of the cylinder barrel 1, the opening cavities facing the wire cores 2 are respectively formed by surrounding the inner walls of the cylinder barrel 1, the air bags 7 are arranged in the opening cavities, and friction damage caused by direct contact of the air bags 7 with the wire inlet shafts 3 and the driven shafts 4 is avoided.
The airbag 7 comprises a valve core 7.1, and a connecting hole for the valve core 7.1 to penetrate is arranged on the cylinder barrel 1. The air bag 7 is supplemented with air or deflated through the valve core 7.1 so as to meet the air volume change requirement in the cylinder barrel 1.
The built-in air bag type double-rod linear magnetorheological damper further comprises a first sealing end cover 9 and a second sealing end cover 10 which are arranged at two ends of the cylinder barrel 1; the first sealing end cover 9 and the second sealing end cover 10 are respectively in threaded connection with the inner walls of the two ends of the cylinder barrel 1;
the wire inlet shaft 3 penetrates through the first sealing end cover 9; the driven shaft 4 penetrates through the second sealing end cover 10.
The built-in air bag type double-rod linear magnetorheological damper further comprises a first sealing ring 11 and a second sealing ring 12, wherein the first sealing ring 11 is arranged on the first sealing end cover 9 and is tightly attached to the cylinder barrel 1, so that when the first sealing end cover 9 is connected with the cylinder barrel 1, the tightly attached sealing effect of the first sealing ring 11 on the cylinder barrel 1 is improved; specifically, a first annular groove for installing a first sealing ring 11 is formed in the first sealing end cover 9; the second sealing ring 12 is arranged on the second sealing end cover 10 and is tightly attached to the cylinder barrel 1, so that the tightly attached sealing effect of the second sealing ring 12 on the cylinder barrel 1 is improved when the second sealing end cover 10 is connected with the cylinder barrel 1; specifically, a second annular groove for installing the second seal ring 12 is provided on the second seal end cap 10.
The built-in air bag type double-rod linear magnetorheological damper further comprises a first linear copper sleeve 13 and a second linear copper sleeve 14; the first sealing end cover 9 is provided with a first mounting hole for mounting the first linear copper sleeve 13, the wire inlet shaft 3 penetrates through the first linear copper sleeve 13, the first linear copper sleeve 13 provides a guiding function for mounting the wire inlet shaft 3, and meanwhile direct friction between the wire inlet shaft 3 and the first sealing end cover 9 can be avoided; the second seal end cover 10 is provided with a second mounting hole for mounting the second linear copper sleeve 14, the driven shaft 4 penetrates through the second linear copper sleeve 14, the second linear copper sleeve 14 provides guiding function for the motion of the driven shaft 4, and meanwhile direct friction between the driven shaft 4 and the second seal end cover 10 can be avoided.
The built-in air bag type double-rod linear magnetorheological damper further comprises an anti-collision gasket 15, wherein the anti-collision gasket 15 is arranged at two ends of the wire core 2 in the sliding direction of the cylinder barrel 1 and is used for preventing the wire core 2 from directly colliding with the first sealing end cover 9 and the second sealing end cover 10 when sliding to the two ends of the cylinder barrel 1.
The operation principle of the built-in air bag type double-rod linear magnetorheological damper is as follows:
when the conducting wire 5 is electrified, the exciting coil 6 is connected with the conducting wire 5, so that a magnetic field is generated around the wire core 2, magnetic particles in the magnetorheological fluid in the cylinder barrel 1 are orderly arranged along magnetic lines, the state of the magnetic particles is changed from fluid to viscoelastic solid, and the volume of the magnetorheological fluid is increased; meanwhile, the damping operation can also cause the temperature inside the cylinder barrel 1 to increase, the volumes of air and magnetorheological fluid can be expanded, and the air bag 7 can effectively buffer the volume change of the air and the magnetorheological fluid inside the cylinder barrel 1.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The double-rod linear magnetorheological damper with the built-in air bags is characterized by comprising a cylinder barrel (1), a wire core (2), a wire inlet shaft (3), a driven shaft (4), a wire (5), an excitation coil (6) and an air bag (7);
a magnetorheological fluid is arranged in the cylinder barrel (1); the wire core (2) is slidably arranged in the cylinder barrel (1), and two ends of the wire core in the sliding direction are respectively connected with the wire inlet shaft (3) and the driven shaft (4); the wire inlet shaft (3) and the driven shaft (4) are arranged outside the cylinder barrel (1) at one end far away from the wire core (2);
a central through hole for the penetration of a lead (5) is arranged on the lead-in shaft (3); a groove for accommodating the exciting coil (6) is formed in the wire core (2); a pore canal for connecting the groove with the central through hole is arranged on the wire core (2), and the conducting wire (5) is connected with the exciting coil (6) through the pore canal;
the air bags (7) are arranged at one end or two ends in the cylinder barrel (1).
2. The built-in air bag type double-rod linear magnetorheological damper according to claim 1, further comprising a fixing sleeve (8) for protecting the air bag (7), wherein the fixing sleeve (8) is arranged on the inner wall of the cylinder barrel (1) and forms an opening cavity with the inner wall of the cylinder barrel (1) towards the wire core (2), and the air bag (7) is arranged in the opening cavity.
3. The built-in air bag type double-rod linear magnetorheological damper according to claim 1, wherein the air bag (7) comprises a valve core (7.1), and a connecting hole for the valve core (7.1) to penetrate is arranged on the cylinder barrel (1).
4. The built-in air bag type double-rod linear magnetorheological damper according to claim 1, further comprising a first sealing end cover (9) and a second sealing end cover (10) arranged at two ends of the cylinder barrel (1); the first sealing end cover (9) and the second sealing end cover (10) are respectively in threaded connection with the inner walls of the two ends of the cylinder barrel (1);
the wire inlet shaft (3) penetrates through the first sealing end cover (9); the driven shaft (4) penetrates through the second sealing end cover (10).
5. The built-in air bag type double-rod linear magnetorheological damper according to claim 4, further comprising a first sealing ring (11) and a second sealing ring (12), wherein the first sealing ring (11) is arranged on the first sealing end cover (9) and is tightly attached to the cylinder barrel (1); the second sealing ring (12) is arranged on the second sealing end cover (10) and is tightly attached to the cylinder barrel (1).
6. The built-in air bag type double-rod linear magnetorheological damper of claim 4, further comprising a first linear copper sleeve (13) and a second linear copper sleeve (14); a first mounting hole for mounting the first linear copper sleeve (13) is formed in the first sealing end cover (9), and the wire inlet shaft (3) penetrates through the first linear copper sleeve (13); the second sealing end cover (10) is provided with a second mounting hole for mounting the second linear copper sleeve (14), and the driven shaft (4) penetrates through the second linear copper sleeve (14).
7. The built-in air bag type double rod linear magnetorheological damper according to any one of claims 1 to 6, further comprising anti-collision gaskets (15), wherein the anti-collision gaskets (15) are disposed at both ends of the core (2) in the sliding direction within the cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320701382.5U CN219242534U (en) | 2023-04-03 | 2023-04-03 | Built-in air bag type double-rod linear magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320701382.5U CN219242534U (en) | 2023-04-03 | 2023-04-03 | Built-in air bag type double-rod linear magnetorheological damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219242534U true CN219242534U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320701382.5U Active CN219242534U (en) | 2023-04-03 | 2023-04-03 | Built-in air bag type double-rod linear magnetorheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219242534U (en) |
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2023
- 2023-04-03 CN CN202320701382.5U patent/CN219242534U/en active Active
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