CN113339444A - High-efficiency self-bearing magnetorheological controllable damping device - Google Patents
High-efficiency self-bearing magnetorheological controllable damping device Download PDFInfo
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- CN113339444A CN113339444A CN202010134998.XA CN202010134998A CN113339444A CN 113339444 A CN113339444 A CN 113339444A CN 202010134998 A CN202010134998 A CN 202010134998A CN 113339444 A CN113339444 A CN 113339444A
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- 238000013016 damping Methods 0.000 title claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 25
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- 239000006096 absorbing agent Substances 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3264—Arrangements for indicating, e.g. fluid level; Arrangements for checking dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
Abstract
The invention discloses a high-efficiency self-bearing magnetorheological controllable damping device which comprises an outer cylinder barrel, an inner cylinder barrel, a piston rod, an electromagnetic assembly and an interdigital runner system, wherein the outer cylinder barrel is connected with the inner cylinder barrel through a bearing; the inner cylinder barrel is positioned in the outer cylinder barrel; magnetorheological fluid is filled in the outer cylinder barrel and the inner cylinder barrel; the piston is positioned in the inner cylinder barrel, one end of the piston rod is fixedly connected with the piston, and the other end of the piston rod penetrates out of the inner cylinder barrel from the upper oil cavity; the outer wall of the electromagnetic component is wound with a coil; the electromagnetic assembly is positioned in the outer cylinder barrel, the lower end of the electromagnetic assembly is provided with a through hole communicated with the outer oil cavity, and the upper end of the electromagnetic assembly is connected with the lower end of the inner cylinder barrel; the interdigital runner system comprises a plurality of inner gaskets and a plurality of outer gaskets; a plurality of inner gaskets are arranged on the outer wall of the electromagnetic assembly at intervals; the outer gaskets are arranged on the inner wall of the outer cylinder barrel at intervals; the inner washers and the outer washers are distributed in a staggered manner; the magnetorheological fluid locking device fully utilizes the characteristics of high response speed and controllable damping force of the magnetorheological fluid, and can realize quick locking while preventing ground resonance.
Description
Technical Field
The invention belongs to the technical field of buffering, and particularly relates to an efficient self-bearing magnetorheological controllable damping device.
Background
In the field of aviation, landing gear is one of the important devices in aircraft structure, and the performance of the landing gear directly influences the processes of takeoff, flying, landing, running, ground test run and the like of the aircraft. When the helicopter vertically takes off and lands in a process of carrying out a diversity task, the helicopter has a capsizing danger in the face of complex terrain features, intelligent control over the attitude of the undercarriage needs to be carried out, and the complex terrain adaptive capacity of the undercarriage is improved. Under modern war conditions, large military helicopters must have the ability to take off and land in complex field situations such as semi-prepared airports, war damage restoration pavements, semi-prepared flat ground, and even field sites in the war zone, where the landing gear will be subjected to large random impact loads. Besides the light weight, strong bearing capacity and good ground control characteristic of the traditional structure, the landing gear also has to meet a plurality of new performance requirements, such as strong site adaptability, efficient damping and buffering performance, better crash resistance, retractable performance of the landing gear, effective prevention of ground resonance and the like. In the prior art, the take-off and landing capacity of the helicopter under complex conditions cannot be guaranteed. Therefore, a design scheme of an adaptive intelligent landing gear is needed, so that the helicopter has the take-off and landing capability and safety under the condition of complex terrain in the take-off and landing process.
In the field of railway vehicles, snaking inevitably occurs. The serpentine motion is mainly due to wheel-rail relationships and creep forces. The large snake motion can generate large wheel-rail dynamic action and vibration acceleration for a long time, and great influence is generated on the vibration and operation safety of a vehicle system. Some snaking movements with small displacements, although not causing safety problems, can seriously affect ride comfort due to body shake and elastic vibration. The shock absorber for resisting serpentine motion of the high-speed train needs to have large damping force. Therefore, in the field of serpentine motion resistance of railway vehicles, a shock absorber with a greatly widened damping force controllable range is required.
In the field of robots, effective, accurate and rapid control of joint mechanisms is a significant difficulty in research. Such as articulated arm robots commonly used in industry and bionic foot robots studied in laboratories, the purpose of the control is to control the position and posture of the tail end of the robot to reach a desired position and lock in time. For large industrial robots with limited motion, the control problem is much more complex. Since the robot is in contact with the environment, it is necessary to control not only the position of the robot tip, but also the forces acting on the environment by the tip. High-precision stepping motors for changing postures often cannot provide large locking force in order to meet precision requirements. Therefore, in the field of robots, a device capable of providing a large locking force is urgently needed, and the locking force can be timely removed, so that the device can meet the requirement of control positioning.
Disclosure of Invention
The technical scheme adopted for achieving the purpose of the invention is that the high-efficiency self-bearing magnetorheological controllable damping device comprises an outer cylinder barrel, an inner cylinder barrel, a piston rod, an electromagnetic assembly and an interdigital runner system.
The upper end and the lower end of the outer cylinder barrel are both closed. The inner cylinder barrel is positioned in the outer cylinder barrel, and the upper end of the inner cylinder barrel is connected to the closed position of the upper end of the outer cylinder barrel. And a gap is formed between the inner cylinder and the inner wall of the outer cylinder. And recording the space between the outer wall of the inner cylinder and the inner wall of the outer cylinder as an outer oil cavity. Magnetorheological fluid is filled in the outer cylinder barrel and the inner cylinder barrel.
The piston is positioned in the inner cylinder barrel and divides the inner cavity of the inner cylinder barrel into an upper oil cavity and a lower oil cavity. One end of the piston rod is fixedly connected with the piston, and the other end of the piston rod penetrates out of the inner cylinder barrel from the upper oil cavity.
The electromagnetic component is cylindrical, and a coil is wound on the outer wall of the electromagnetic component. The electromagnetic assembly is located in the outer cylinder. The lower end of the electromagnetic assembly is connected to the closed part of the lower end of the outer cylinder barrel, and the lower end of the electromagnetic assembly is provided with a through hole communicated with the outer oil cavity. The upper end of the electromagnetic assembly is connected with the lower end of the inner cylinder barrel. The inner space of the electromagnetic assembly is communicated with the lower oil cavity.
The interdigitated runner system includes a plurality of inner gaskets and a plurality of outer gaskets.
A plurality of the inner gaskets are arranged on the outer wall of the electromagnetic assembly at intervals. A plurality of the outer gaskets are arranged on the inner wall of the outer cylinder barrel at intervals. The inner washers and the outer washers are distributed in a staggered mode. The inner washer and the outer washer are both magnetic conductive washers.
When the coil is electrified, a magnetic field is generated, conduction is restrained through the electromagnetic assembly, and the magnetic field along the axial direction of the electromagnetic assembly is formed between the inner gasket and the outer gasket.
Further, the closed end at the lower end of the outer cylinder barrel is cylindrical. The closed end is internally provided with an ultrasonic detection device and a control circuit board.
The control circuit board is connected with the coil. When the ultrasonic detection device detects that the closed end is in contact with the ground, the ultrasonic detection device outputs a signal to the control circuit board, and the control circuit board outputs an instruction to electrify the coil.
Further, the two adjacent inner gaskets are supported by the inner supporting piece. Two adjacent outer gaskets are supported by the outer supporting piece.
Further, the inner support and the outer support are both made of non-magnetic materials.
Furthermore, a plurality of circulation holes are formed in the outer wall of the upper end of the inner cylinder barrel.
Further, a gap exists between the piston and the inner wall of the inner cylinder barrel.
Further, the electromagnetic assembly is a magnetic yoke.
Further, the upper end of the electromagnetic assembly is provided with a circular boss. The lower end of the inner cylinder barrel is sleeved on the circular boss at the upper end of the electromagnetic assembly.
Further, the outer cylinder barrel is made of a non-magnetic material.
The technical effect of the invention is undoubted, and the invention has the following advantages:
1) the conventional damping device is generally used in cooperation with an elastic element, and the elastic element bears static load, and the damping device generates damping force only during dynamic operation. Even if the magnetorheological fluid damper has a certain bearing capacity before the magnetorheological fluid is subjected to dynamic yield, the bearing capacity is insufficient due to the fact that the dynamic range is not wide enough; the interdigital runner system is of a structure overlapped layer by layer, a uniform strong magnetic field can be realized, the length of an effective flow channel under the control of the magnetic field is increased in a multiplied mode, the static load bearing capacity of a damping device can be greatly improved, and the locking function can be effectively realized.
2) The magnetorheological fluid self-bearing device can fully utilize the characteristics of high response speed and controllable damping force of the magnetorheological fluid, can realize quick locking while preventing ground resonance, is not only suitable for taking off and landing of a helicopter in a complex battlefield environment, but also suitable for being applied to locking devices of robots and railway vehicles, and realizes high-efficiency self-bearing;
3) the invention adopts the design of the circulating flow channel, and skillfully relieves the sedimentation problem caused by long-term service of the magnetorheological fluid. In the movement process, the magnetorheological fluid can circularly flow, and the problems of settlement, hardening and the like for a long time are effectively solved.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is an enlarged view of a portion of the interdigitated flow channel system of FIG. 1;
FIG. 3 is a schematic view of the magnetic lines in the interdigitated flow channel.
In the figure: the piston type hydraulic cylinder comprises an outer cylinder barrel 1, an inner cylinder barrel 2, a flow hole 201, a piston 3, a piston rod 4, an electromagnetic assembly 5, a through hole 501, a circular ring boss 502, an interdigital runner system 6, an inner gasket 601, an outer gasket 602, an inner support 603, an outer support 604 and a coil 7.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses a high-efficiency self-bearing magnetorheological controllable damping device, which is shown in fig. 1 and comprises an outer cylinder barrel 1, an inner cylinder barrel 2, a piston 3, a piston rod 4, an electromagnetic assembly 5 and an interdigital runner system 6.
The upper and lower ends of the outer cylinder barrel 1 are sealed, specifically, an opening at the upper end of the outer cylinder barrel 1 is connected with a top cover through threads, and the closed end at the lower end of the outer cylinder barrel 1 is cylindrical. The blind end passes through threaded connection and opens the department at outer cylinder 1 lower extreme, it has ultrasonic detection device and control circuit board to hold in the blind end. The inner cylinder barrel 2 is positioned in the outer cylinder barrel 1, and the upper end of the inner cylinder barrel 2 is connected to the closed position of the upper end of the outer cylinder barrel 1. And a gap is reserved between the inner cylinder 2 and the inner wall of the outer cylinder 1. The space between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1 is marked as an outer oil chamber. A plurality of flow holes 201 are processed on the outer wall of the upper end of the inner cylinder barrel 2. Magnetorheological fluid is filled in the outer cylinder barrel 1 and the inner cylinder barrel 2. The outer cylinder 1 is made of a non-magnetic material.
The piston 3 is positioned in the inner cylinder 2 and divides the inner cavity of the inner cylinder 2 into an upper oil cavity and a lower oil cavity. A certain gap is formed between the piston 3 and the inner wall of the inner cylinder 2. And one end of the piston rod 4 is fixedly connected with the piston 3, and the other end of the piston rod penetrates out of the inner cylinder barrel 2 from the upper oil cavity and penetrates out of the top cover of the outer cylinder barrel 1.
The electromagnetic assembly 5 is a magnetic yoke, the electromagnetic assembly 5 is cylindrical, an annular groove is formed in the outer wall of the electromagnetic assembly 5, and a coil 7 is wound in the annular groove. The lead of the coil 7 passes through the closed end of the lower end of the outer cylinder barrel 1 and is connected with the control circuit board. The electromagnetic assembly 5 is located in the outer cylinder 1. The lower end of the electromagnetic assembly 5 is connected to the closed position of the lower end of the outer cylinder barrel 1, and the lower end of the electromagnetic assembly 5 is provided with a through hole 501 communicated with the outer oil cavity. The upper end of the electromagnetic assembly 5 is connected with the lower end of the inner cylinder 2, and specifically, the upper end of the electromagnetic assembly 5 is provided with a circular boss 502. The lower end of the inner cylinder barrel 2 is sleeved on a circular boss 502 at the upper end of the electromagnetic assembly 5. The inner space of the electromagnetic component 5 is communicated with the lower oil cavity.
Referring to fig. 2, the interdigitated flow system 6 includes a plurality of inner gaskets 601 and a plurality of outer gaskets 602.
A plurality of inner washers 601 are fixed on the outer wall of the electromagnetic assembly 5 at intervals, and two adjacent inner washers 601 are supported by an inner support 603. A plurality of outer washers 602 are fixed on the inner wall of the outer cylinder barrel 1 at intervals, and two adjacent outer washers 602 are supported by an outer support 604. The inner washers 601 and the outer washers 602 are distributed in a staggered manner. The inner washer 601 and the outer washer 602 are both magnetic conductive washers. The inner support 603 and the outer support 604 are made of a non-magnetic material.
The operation principle of the interdigital runner system 6 is as follows: when the coil 7 is electrified, a magnetic field is generated, the conduction is restricted through the electromagnetic assembly 5, a magnetic field along the axial direction of the electromagnetic assembly 5 is formed between the inner washer 601 and the outer washer 602, the yield strength of the filled magnetorheological fluid is increased under the action of the magnetic field, the magnetorheological fluid is in a solid state and is difficult to flow through the magnetorheological fluid before the yield stress is reached, and in addition, a plurality of shearing surfaces are interwoven and laminated to generate an extremely large damping force, so that the aim of locking is fulfilled.
Referring to fig. 3, fig. 3 shows the magnetic field line distribution around the interdigitated flow channel 6 system calculated by the magnetic field analysis software ANSYS. When the applied current density is 107A/m2In the process, the magnetic field intensity at the position of the interdigital runner 6 system is 0.539T, the maximum magnetic induction intensity of a magnetic circuit is about 1.6T at the moment, the magnetic circuit is far from being saturated, even a uniform magnetic field with higher intensity can be realized, and the shearing yield stress of the magnetorheological fluid can meet the locking requirement.
The damping device of the present embodiment is suitable for helicopter take-off and landing, and in the present embodiment, the equilibrium position of the piston 3 is taken as the position in the outer cylinder 1 closest to the top cover. When the helicopter slowly lands and the landing gear is pressed, the piston rod 4 pushes the piston 3 to move downwards, and the piston 3 is separated from the balance position. The magnetorheological fluid in the lower oil chamber is forced to enter the outer oil chamber from the through hole 501 at the lower end of the electromagnetic assembly 5 and flow into the upper oil chamber through the through hole 201 on the inner cylinder barrel 2. Once the ultrasonic detection device detects that the distance between the damping device and the ground is 0, the fact that the helicopter reaches a horizontal parking condition is indicated, the ultrasonic detection device outputs a signal to the control circuit board, the control circuit board outputs an instruction to electrify the coil 7, the yield strength of the magnetorheological fluid at the interdigital runner system 6 is rapidly increased by more than 10 times within a millisecond time scale, and the damping force enough for supporting the helicopter is generated. When the helicopter takes off, the coil 7 is powered off, the magnetorheological fluid at the interdigital runner system 6 is restored to be in a liquid state, the shearing yield strength is low, the piston rod 4 is restored, and the magnetorheological fluid in the upper oil cavity enters the outer oil cavity through the through hole 201 of the inner cylinder barrel 2 and flows into the lower oil cavity through the through hole 501 at the lower end of the electromagnetic assembly 5.
Example 2:
the embodiment provides a basic implementation manner, and provides a high-efficiency self-bearing magnetorheological controllable damping device, which is shown in fig. 1 and comprises an outer cylinder barrel 1, an inner cylinder barrel 2, a piston 3, a piston rod 4, an electromagnetic assembly 5 and an interdigital runner system 6.
The upper end and the lower end of the outer cylinder barrel 1 are closed. The inner cylinder barrel 2 is positioned in the outer cylinder barrel 1, and the upper end of the inner cylinder barrel 2 is connected to the closed position of the upper end of the outer cylinder barrel 1. And a gap is reserved between the inner cylinder 2 and the inner wall of the outer cylinder 1. The space between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1 is marked as an outer oil chamber. Magnetorheological fluid is filled in the outer cylinder barrel 1 and the inner cylinder barrel 2. The outer cylinder 1 is made of a non-magnetic material.
The piston 3 is positioned in the inner cylinder 2 and divides the inner cavity of the inner cylinder 2 into an upper oil cavity and a lower oil cavity. And one end of the piston rod 4 is fixedly connected with the piston 3, and the other end of the piston rod penetrates out of the inner cylinder barrel 2 from the upper oil cavity.
The electromagnetic component 5 is cylindrical, an annular groove is formed in the outer wall of the electromagnetic component, and a coil 7 is wound in the annular groove. The electromagnetic assembly 5 is located in the outer cylinder 1. The lower end of the electromagnetic assembly 5 is connected to the closed position of the lower end of the outer cylinder barrel 1, and the lower end of the electromagnetic assembly 5 is provided with a through hole 501 communicated with the outer oil cavity. The upper end of the electromagnetic assembly 5 is connected with the lower end of the inner cylinder barrel 2, and the inner space of the electromagnetic assembly 5 is communicated with the lower oil cavity.
Referring to fig. 2, the interdigitated flow system 6 includes a plurality of inner gaskets 601 and a plurality of outer gaskets 602.
A plurality of the inner washers 601 are fixed on the outer wall of the electromagnetic assembly 5 at intervals. A plurality of the outer washers 602 are fixed on the inner wall of the outer cylinder 1 at intervals. The inner washers 601 and the outer washers 602 are distributed in a staggered manner. The inner washer 601 and the outer washer 602 are both magnetic conductive washers.
The operation principle of the interdigital runner system 6 is as follows: when the coil 7 is electrified, a magnetic field is generated, the conduction is restricted through the electromagnetic assembly 5, a magnetic field along the axial direction of the electromagnetic assembly 5 is formed between the inner washer 601 and the outer washer 602, the yield strength of the filled magnetorheological fluid is increased under the action of the magnetic field, the magnetorheological fluid is in a solid state and is difficult to flow through the magnetorheological fluid before the yield stress is reached, and in addition, a plurality of shearing surfaces are interwoven and laminated to generate an extremely large damping force, so that the aim of locking is fulfilled.
Referring to fig. 3, fig. 3 shows the magnetic field line distribution around the interdigitated flow channel 6 system calculated by the magnetic field analysis software ANSYS. When the applied current density is 107A/m2At the moment, the magnetic field intensity at the interdigital runner 6 system is 0.539T, and the maximum magnetic induction intensity of a magnetic circuit is strong at the momentThe degree is about 1.6T, the magnetic field is far from being saturated, even a uniform magnetic field with higher strength can be realized, and the shear yield stress of the magnetorheological fluid can meet the locking requirement.
Example 3:
the main structure of this embodiment is the same as embodiment 2, further, the opening at the upper end of the outer cylinder 1 is connected with a top cover through screw threads, and the closed end at the lower end of the outer cylinder 1 is cylindrical. The blind end passes through threaded connection and opens the department at outer cylinder 1 lower extreme, it has ultrasonic detection device and control circuit board to hold in the blind end.
The control circuit board is connected with the coil 7, and specifically, a lead of the coil 7 penetrates through the closed end of the lower end of the outer cylinder barrel 1 and is connected with the control circuit board. When the ultrasonic detection device detects that the closed end is in contact with the ground, the ultrasonic detection device outputs a signal to the control circuit board, and the control circuit board outputs an instruction to electrify the coil 7.
Example 4:
the main structure of this embodiment is the same as that of embodiment 2, and further, the two adjacent inner washers 601 are supported by the inner support 603. Two adjacent outer gaskets 602 are supported by an outer support 604.
Example 5:
the main structure of this embodiment is the same as that of embodiment 4, and further, the inner support 603 and the outer support 604 are both made of non-magnetic conductive material.
Example 6:
the main structure of this embodiment is the same as embodiment 2, and further, a plurality of flow holes 201 are arranged on the outer wall of the upper end of the inner cylinder 2. The communication between the outer oil chamber and the upper oil chamber is realized through the circulation hole 201.
Example 7:
the main structure of this embodiment is the same as that of embodiment 2, and further, a certain gap exists between the piston 3 and the inner wall of the inner cylinder 2.
Example 8:
the main structure of this embodiment is the same as that of embodiment 2, and further, the electromagnetic assembly 5 is a magnetic yoke.
Example 9:
the main structure of this embodiment is the same as that of embodiment 2, and further, an annular boss 502 is disposed at the upper end of the electromagnetic assembly 5. The lower end of the inner cylinder barrel 2 is sleeved on a circular boss 502 at the upper end of the electromagnetic assembly 5.
Claims (9)
1. The utility model provides a controllable damping device of high-efficient self-supporting magnetic current becomes which characterized in that: the device comprises an outer cylinder barrel (1), an inner cylinder barrel (2), a piston (3), a piston rod (4), an electromagnetic assembly (5) and an interdigital runner system (6);
the upper end and the lower end of the outer cylinder barrel (1) are closed; the inner cylinder barrel (2) is positioned in the outer cylinder barrel (1), and the upper end of the inner cylinder barrel (2) is connected to the closed part of the upper end of the outer cylinder barrel (1); a gap is formed between the inner cylinder barrel (2) and the inner wall of the outer cylinder barrel (1); marking the space between the outer wall of the inner cylinder barrel (2) and the inner wall of the outer cylinder barrel (1) as an outer oil cavity; magnetorheological fluid is filled in the outer cylinder barrel (1) and the inner cylinder barrel (2);
the piston (3) is positioned in the inner cylinder barrel (2) and divides the inner cavity of the inner cylinder barrel (2) into an upper oil cavity and a lower oil cavity; one end of the piston rod (4) is fixedly connected with the piston (3), and the other end of the piston rod penetrates out of the inner cylinder barrel (2) from the upper oil cavity.
The electromagnetic assembly (5) is cylindrical, and a coil (7) is wound on the outer wall of the electromagnetic assembly; the electromagnetic assembly (5) is positioned in the outer cylinder barrel (1); the lower end of the electromagnetic assembly (5) is connected to the closed position of the lower end of the outer cylinder barrel (1), and the lower end of the electromagnetic assembly (5) is provided with a through hole (501) communicated with the outer oil cavity; the upper end of the electromagnetic assembly (5) is connected with the lower end of the inner cylinder barrel (2); the inner space of the electromagnetic assembly (5) is communicated with the lower oil cavity;
the interdigital runner system (6) comprises a plurality of inner gaskets (601) and a plurality of outer gaskets (602);
a plurality of inner gaskets (601) are arranged on the outer wall of the electromagnetic assembly (5) at intervals; a plurality of outer gaskets (602) are arranged on the inner wall of the outer cylinder barrel (1) at intervals; the inner gaskets (601) and the outer gaskets (602) are distributed in a staggered manner; the inner washer (601) and the outer washer (602) are both magnetic conductive washers;
when the coil (7) is electrified, a magnetic field is generated, conduction is restrained through the electromagnetic assembly (5), and the magnetic field along the axial direction of the electromagnetic assembly (5) is formed between the inner gasket (601) and the outer gasket (602).
2. An efficient self-supporting magnetorheological controllable damping device according to claim 1 or 2, wherein: the closed end of the lower end of the outer cylinder barrel (1) is cylindrical; the closed end is internally provided with an ultrasonic detection device and a control circuit board;
the control circuit board is connected with a coil (7); when the ultrasonic detection device detects that the closed end is in contact with the ground, the ultrasonic detection device outputs a signal to the control circuit board, and the control circuit board outputs an instruction to electrify the coil (7).
3. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: two adjacent inner gaskets (601) are supported by an inner support (603); two adjacent outer gaskets (602) are supported by an outer support (604).
4. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: the inner support (603) and the outer support (604) are both made of a non-magnetic material.
5. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: the outer wall of the upper end of the inner cylinder barrel (2) is provided with a plurality of circulation holes (201).
6. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: and a gap is reserved between the piston (3) and the inner wall of the inner cylinder barrel (2).
7. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: the electromagnetic component (5) is a magnetic yoke.
8. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: the upper end of the electromagnetic component (5) is provided with a circular boss (502); the lower end of the inner cylinder barrel (2) is sleeved on a circular boss (502) at the upper end of the electromagnetic assembly (5).
9. The high-efficiency self-supporting magnetorheological controllable damping device according to claim 1, wherein: the outer cylinder barrel (1) is made of a non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134998.XA CN113339444A (en) | 2020-03-01 | 2020-03-01 | High-efficiency self-bearing magnetorheological controllable damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134998.XA CN113339444A (en) | 2020-03-01 | 2020-03-01 | High-efficiency self-bearing magnetorheological controllable damping device |
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| CN113339444A true CN113339444A (en) | 2021-09-03 |
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| CN202010134998.XA Pending CN113339444A (en) | 2020-03-01 | 2020-03-01 | High-efficiency self-bearing magnetorheological controllable damping device |
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