阅读说明：本技术 一种带有外置主动分散装置的磁流变阻尼器 (Magneto-rheological damper with external active dispersing device ) 是由 不公告发明人 于 2019-08-28 设计创作，主要内容包括：本发明公开了一种带有外置主动分散装置的磁流变阻尼器,包括缸筒、动力装置、电磁组件和转子；所述动力装置位于缸筒外部；所述动力装置的输出端连接缸筒的封闭端,动力装置的输出端穿入在缸筒的封闭端中；所述电磁组件位于缸筒内部；所述电磁组件下端支撑在封闭端上；所述转子位于缸筒内部,转子的伸出轴穿入在缸筒的封闭端中,并与外置电机的输出端固连；本发明通过动力装置直接驱动转子转动,相对于在阻尼底部安装内置电机,解决了由于转子与定子间隙填充磁流变液,导致间隙磁场减弱的问题,同时,动力装置驱动方便,控制简单。(The invention discloses a magneto-rheological damper with an external active dispersion device, which comprises a cylinder barrel, a power device, an electromagnetic assembly and a rotor, wherein the cylinder barrel is provided with a first end and a second end; the power device is positioned outside the cylinder barrel; the output end of the power device is connected with the closed end of the cylinder barrel, and the output end of the power device penetrates into the closed end of the cylinder barrel; the electromagnetic assembly is positioned inside the cylinder barrel; the lower end of the electromagnetic assembly is supported on the closed end; the rotor is positioned inside the cylinder barrel, and an extension shaft of the rotor penetrates into the closed end of the cylinder barrel and is fixedly connected with the output end of the external motor; the power device directly drives the rotor to rotate, and compared with the built-in motor arranged at the bottom of the damper, the invention solves the problem of weakening a gap magnetic field caused by filling magnetorheological fluid in the gap between the rotor and the stator, and simultaneously, the power device is convenient to drive and simple to control.)

1. The utility model provides a magnetic current becomes attenuator with external initiative dispersion devices which characterized in that: comprises a cylinder barrel (1), a power device (4), an electromagnetic component (5) and a rotor (7);

the upper end of the cylinder barrel (1) is open, and the lower end is a closed end (3); magnetorheological fluid is filled in the cylinder barrel (1);

the power device (4) is positioned outside the cylinder barrel (1); the power device (4) is connected with the closed end (3) of the cylinder barrel (1), and the output end of the power device (4) penetrates into the closed end (3) of the cylinder barrel (1);

an outer coil (502) is wound on the electromagnetic assembly (5); the electromagnetic assembly (5) is located inside the cylinder barrel (1).

An extension shaft (701) is extended from the end face of the rotor (7); the rotor (7) is positioned in the cylinder barrel (1), and an extension shaft (701) of the rotor (7) penetrates into the closed end (3) of the cylinder barrel (1) and is fixedly connected with the output end of the power device (4);

the power device (4) is driven, the output end of the power device (4) drives the rotor to rotate (7), and the rotor (7) drives the magnetorheological fluid to rotate and flow in the cylinder barrel (1).

2. The magnetorheological damper with the external active dispersing device according to claim 2, wherein: the device also comprises a top cover (2), an upper baffle (6), a working cylinder (8), a piston assembly (9), a piston rod (10) and a positioning piece (11);

the middle part of the top cover (2) is provided with a through hole I (201); the top cover (2) is inserted into the inner wall of the upper end of the cylinder barrel (1);

the lower end of the electromagnetic component (5) is supported on the closed end (3); the rotor (7) is positioned inside the electromagnetic assembly (5), an inner channel is formed between the rotor (7) and the electromagnetic assembly (5), and an outer channel is formed between the electromagnetic assembly (5) and the cylinder barrel (1);

the upper baffle (6) is disc-shaped, and the center of the upper end surface of the upper baffle is provided with a round hole (601); a plurality of through holes V (602) are uniformly distributed on the end surface of the upper baffle (6) in the circumferential direction; the upper baffle (6) is fixed on the upper end surface of the electromagnetic assembly (5); the through hole V (602) of the upper baffle (6) is communicated with the inner channel; an extension shaft (701) is extended from the end face of the rotor (7) far away from the closed end (3), and the extension shaft (701) is inserted into a round hole (601) of the upper baffle plate (6);

the working cylinder (8) is cylindrical, and the upper end and the lower end of the working cylinder are both open; a plurality of circulation grooves (801) and a plurality of through holes VI (802) are uniformly distributed on the periphery of the inner wall of the working cylinder (8), wherein the circulation grooves (801) are positioned below the through holes VI (802); recording the position of the circulation groove (801) as an equilibrium position;

the working cylinder (8) is positioned in the cylinder barrel (1) and has a gap with the cylinder barrel (1); the lower end of the working cylinder (8) is arranged on the upper end surface of the upper baffle plate (6), and the upper end of the working cylinder (8) is arranged on the lower end surface of the top cover (2); the space between the outer wall of the working cylinder (8) and the inner wall of the cylinder barrel (1) is marked as a flow cavity (S1), and the space inside the working cylinder (8) is marked as an inner cavity S;

the piston assembly (9) is positioned in the working cylinder (8) and has a gap with the working cylinder (8);

the piston assembly (9) divides the inner cavity S, an upper oil cavity (S2) is formed above the piston assembly (9), and a lower oil cavity (S3) is formed below the piston assembly (9);

the lower end of the piston rod (10) is arranged on the piston assembly (9), and the upper end of the piston rod penetrates out of the through hole I (201) of the top cover (2);

the positioning piece (11) is in a hollow disc shape; the positioning piece (11) is inserted into an opening at the upper end of the cylinder barrel (1) to tightly press the end cover (6);

when the piston assembly (9) is in a rest position;

when the base (3) is pressed, the piston rod (10) pushes the piston assembly (9) to move downwards, and the piston assembly (9) is separated from the balance position; magnetorheological fluid in the lower oil cavity (S3) enters the flow cavity (S1) through the inner channel and the outer channel and flows into the upper oil cavity (S2) through the through hole VI (802) of the working cylinder (8);

when the piston rod (10) restores, magnetorheological fluid in the upper oil cavity (S2) enters the flow cavity (S1) through the through hole VI (802) of the working cylinder (8) and flows into the lower oil cavity (S3) of the working cylinder (8) through the outer channel and the inner channel.

3. The magnetorheological damper with the external active dispersing device according to claim 2, wherein: an annular boss I (603) is arranged on the end face of the upper end of the upper baffle (6); the end surface of the lower end of the top cover (2) is provided with a circular boss II (202);

the lower end of the working cylinder (8) is sleeved on the circular boss I (603), and the upper end of the working cylinder (8) is sleeved on the circular boss II (202).

4. The magnetorheological damper with the external active dispersing device according to claim 1, wherein: the power device (4) is a motor or a rotating handle.

5. The magnetorheological damper with the external active dispersing device according to claim 1, wherein: the closed end (3) of the cylinder barrel (1) is cylindrical; a partition plate (301) is arranged in the closed end (3), the partition plate (301) partitions the base (3), and a power device accommodating cavity is formed at the lower end of the partition plate (301); the middle part of the clapboard (301) is provided with a through hole II (3011);

the power device (4) is arranged in the power device accommodating cavity, and the output end of the power device (4) penetrates into the through hole II (3011) of the partition plate (301); an extension shaft (701) at the lower end of the rotor (7) penetrates through a through hole II (3011) of the partition board (301) and is fixedly connected with the output end of the power device (4);

a plurality of limiting grooves (3012) are uniformly distributed on the upper surface of the clapboard (301) in the circumferential direction; a through hole III (3013) is arranged at the bottom of the limiting groove (3012); a plurality of bosses (503) are extended from the lower end of the electromagnetic component (5), and each boss (503) is correspondingly inserted into a limit groove (3012) of the partition plate (301).

6. The magnetorheological damper with the external active dispersing device according to claim 5, wherein: a sealing groove (30111) is arranged on the wall of the through hole II (3011); an O-shaped sealing ring is arranged in the sealing groove (30111).

7. The magnetorheological damper with the external active dispersing device according to claim 5, wherein: a through hole IV (5031) is formed in the bottom surface of the boss (503); the through hole IV (5031) is communicated with the annular groove I (501); and positive and negative leads of the outer coil (502) penetrate through the through hole IV (5031), are led out from the through hole III (3013) of the partition board (301), and are connected with an external power supply.

8. The magnetorheological damper with the external active dispersing device according to claim 1, wherein: the outer wall of the rotor (7) is provided with spiral ribs (702) or spiral blades.

9. The magnetorheological damper with the external active dispersing device according to claim 1, wherein: the electromagnetic component (5) is a magnetic yoke.

Technical Field

The invention belongs to the technical field of buffering, and particularly relates to a magnetorheological damper with an external active dispersing device.

Background

The magnetic rheological liquid is one new kind of intelligent material and is prepared with small soft magnetic particle with high magnetic conductivity and low magnetic hysteresis and non-magnetic conducting liquid. The magnetorheological fluid has the characteristics of low-viscosity Newtonian fluid under the condition of zero magnetic field, and the apparent viscosity is very low; under the action of a strong magnetic field, the Bingham body with high viscosity and low fluidity can be presented in a short time, and the Bingham body is visually presented in a solid-like form. The change is continuous and reversible, and the property makes the material have wide application prospect in the aspects of shock absorbers, brake devices, medical, aerospace and aviation materials, automatic weapons and the like.

The magneto-rheological damper is a novel semi-active control device with a structure, takes magneto-rheological fluid as a medium, has the characteristics of large output damping force, wide dynamic range, high response speed, low power consumption and the like, is controllable in real time under the action of working current, and has wide application prospect in the field of vibration and buffering.

Although the magnetorheological damper has a plurality of advantages, the magnetorheological damper can not be widely applied in the engineering field all the time, and the fundamental reason is that the sedimentation problem of the magnetorheological fluid can not be effectively solved. Due to the density difference between the magnetic particles and the carrier liquid, the magnetic particles are inevitably settled in the carrier liquid under the gravity effect, and in the military field, the magneto-rheological damper device is stood for a long time, so that the settling problem of the magneto-rheological fluid is more serious. In the past, researchers mainly focus on improving the suspension stability in the main focus of solving the settling problem of the magnetorheological fluid, and the solving of the settling problem of the magnetorheological fluid from the mechanical structure is complex.

In the prior art, the built-in motor is arranged at the bottom of the damper, so that the problem of sedimentation of the magnetorheological damper during standing can be effectively solved, however, the gap between the rotor and the stator is filled with magnetorheological fluid, the gap magnetic field is weakened, the motor is difficult to drive, and the built-in motor is very complex in control.

Accordingly, there is a need in the art for a damper that overcomes the above-mentioned problems.

Disclosure of Invention

The technical scheme adopted for achieving the purpose of the invention is that the magnetorheological damper with the external active dispersion device comprises a cylinder barrel, a power device, an electromagnetic assembly and a rotor.

The upper end of the cylinder barrel is open, and the lower end of the cylinder barrel is closed. Magnetorheological fluid is filled in the cylinder barrel.

The power device is located outside the cylinder barrel and connected with the closed end of the cylinder barrel, and the output end of the power device penetrates into the closed end of the cylinder barrel.

An outer coil is wound on the electromagnetic assembly. The electromagnetic assembly is located inside the cylinder barrel.

An extending shaft is arranged on the end surface of the rotor in a branching manner. The rotor is positioned in the cylinder barrel, and an extension shaft of the rotor penetrates into the closed end of the cylinder barrel and is fixedly connected with the output end of the power device.

The output end of the power device drives the rotor to rotate, and the rotor drives the magnetorheological fluid to rotate and flow in the cylinder barrel.

Further, still include top cap, overhead gage, working cylinder, piston assembly, piston rod and setting element.

The middle part of the top cover is provided with a through hole I. The top cover is inserted into the inner wall of the upper end of the cylinder barrel.

The lower end of the electromagnetic assembly is supported on the closed end. The rotor is located inside the electromagnetic assembly, an inner channel is formed between the rotor and the electromagnetic assembly, and an outer channel is formed between the electromagnetic assembly and the cylinder barrel.

The upper baffle is disc-shaped, and a round hole is formed in the center of the upper end face of the upper baffle. And a plurality of through holes V are uniformly distributed on the end surface of the upper baffle in the circumferential direction. The upper baffle plate is fixed on the upper end face of the electromagnetic assembly. The through hole V of the upper baffle is communicated with the inner channel. And an extension shaft is extended from the end face of the rotor far away from the closed end and inserted into the round hole of the upper baffle.

The working cylinder is cylindrical, and the upper end and the lower end of the working cylinder are both open. And a plurality of circulation grooves and a plurality of through holes VI are uniformly distributed on the periphery of the inner wall of the working cylinder, wherein the circulation grooves are positioned below the through holes VI. The position of the flow-through channel is noted as equilibrium position.

The working cylinder is positioned in the cylinder barrel and has a gap with the cylinder barrel. The lower end of the working cylinder is arranged on the upper end face of the upper baffle, and the upper end of the working cylinder is arranged on the lower end face of the top cover. The space between the outer wall of the working cylinder and the inner wall of the cylinder barrel is marked as a flow cavity, and the space inside the working cylinder is marked as an inner cavity S.

The piston assembly is located in the working cylinder and has a gap with the working cylinder.

The piston assembly divides the interior chamber S, forming an upper oil chamber above the piston assembly and a lower oil chamber below the piston assembly.

The lower end of the piston rod is installed on the piston assembly, and the upper end of the piston rod penetrates out of the through hole I of the top cover.

The positioning piece is in the shape of a hollow disc. The positioning piece is inserted into the opening at the upper end of the cylinder barrel to press the end cover tightly.

At rest, the piston assembly is in an equilibrium position.

When the base is pressed, the piston rod pushes the piston assembly to move downwards, and the piston assembly is separated from the balance position. Magnetorheological fluid in the lower oil cavity enters the flowing cavity through the inner channel and the outer channel and flows into the upper oil cavity through the through hole VI of the working cylinder.

When the piston rod is restored, magnetorheological fluid in the upper oil cavity enters the flow cavity through the through hole VI of the working cylinder and flows into the lower oil cavity of the working cylinder through the outer channel and the inner channel.

Furthermore, an annular boss I is arranged on the end face of the upper end of the upper baffle plate. And the end surface of the lower end of the top cover is provided with a circular boss II.

The lower end of the working cylinder is sleeved on the circular boss I, and the upper end of the working cylinder is sleeved on the circular boss II.

Further, the power device is a motor or a rotating handle.

Further, the closed end of the cylinder barrel is cylindrical. The closed end is internally provided with a partition plate which divides the base, and the lower end of the partition plate forms a power device accommodating cavity. The middle part of the clapboard is provided with a through hole II.

The power device is arranged in the power device accommodating cavity, and the output end of the power device penetrates into the through hole II of the partition plate. And an extension shaft at the lower end of the rotor penetrates into a through hole II of the partition plate and is fixedly connected with the output end of the power device.

A plurality of limiting grooves are evenly distributed on the upper surface of the partition board in the circumferential direction. And a through hole III is formed in the bottom of the limiting groove. A plurality of bosses are arranged at the lower end of the electromagnetic component in an extending mode, and each boss is correspondingly inserted into one limiting groove of the partition plate.

Further, a sealing groove is formed in the hole wall of the through hole II. An O-shaped sealing ring is arranged in the sealing groove.

Further, a through hole IV is formed in the bottom surface of the boss. The through hole IV is communicated with the annular groove I. And the positive and negative leads of the outer coil penetrate through the through hole IV and are led out of the through hole III of the partition plate to be connected with an external power supply.

Further, the outer wall of the rotor is provided with spiral ribs or spiral blades.

Further, the electromagnetic assembly is a magnetic yoke.

The technical effect of the invention is undoubted, and the invention has the following advantages:

1) according to the invention, the rotor is directly driven to rotate by the external power device, and compared with the method that the built-in motor is arranged at the bottom of the damper, the problems that the gap magnetic field is weakened and the motor is difficult to drive due to the fact that the magnetorheological fluid is filled in the gap between the rotor and the stator are solved; meanwhile, the external power device is convenient to drive and simple to control.

2) When the damper is in standing, the external power device is driven, the power device drives the rotor to rotate, and the spiral ribs of the rotor drive the magnetorheological fluid to generate rotary flow, so that the settled magnetorheological fluid can be dispersed again, and the problem of settlement of the magnetorheological fluid is solved.

3) When the damper is compressed, the coil is electrified to generate a magnetic field, the damping force generated by flowing is changed due to the magneto-rheological effect, so that the damper with controllable damping is realized, the current can be controlled in a closed loop mode according to the motion state of the damper, and the magneto-rheological fluid generates larger controllable damping force for damping impact under the action of the controllable magnetic field.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic three-dimensional structure of FIG. 1;

FIG. 3 is a schematic view of the closed end of the cylinder barrel of the present invention;

FIG. 4 is a schematic diagram of an electromagnetic assembly of the present invention;

FIG. 5 is a schematic view of the upper baffle structure of the present invention;

FIG. 6 is a schematic view of a rotor structure according to the present invention;

FIG. 7 is a schematic view of the construction of the working cylinder of the present invention;

fig. 8 is a schematic diagram of the application of the present invention to recoil of a firearm.

In the figure: the piston assembly comprises a cylinder barrel 1, a top cover 2, a through hole I201, a circular boss II202, a closed end 3, a partition plate 301, a through hole II3011, a sealing groove 30111, a limiting groove 3012, a through hole III3013, an external motor 4, an electromagnetic assembly 5, an annular groove I501, an outer coil 502, a boss 503, a through hole IV5031, an annular groove II504, an upper baffle 6, a circular hole 601, a through hole V602, a circular boss I603, a rotor 7, an extension shaft 701, a spiral rib 702, a working cylinder 8, a circulation groove 801, a through hole VI802, a piston assembly 9, a guide ring 901, a piston rod 10, a positioning piece 11, a flow cavity S1, an upper oil cavity S2 and a lower oil cavity S3.

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 magnetorheological damper with an external active dispersion device, and the magnetorheological damper with the external active dispersion device is shown in fig. 1 and fig. 2 and comprises a cylinder barrel 1, a top cover 2, a power device 4, an electromagnetic assembly 5, an upper baffle 6, a rotor 7, a working cylinder 8, a piston assembly 9, a piston rod 10 and a positioning piece 11.

The cylinder barrel 1 is open at the upper end and closed at the lower end 3. The openings on the cylinder barrel 1 are provided with internal threads. Magnetorheological fluid is filled in the cylinder barrel 1.

The middle part of the top cover 2 is provided with a through hole I201. The end face of the lower end of the top cover 2 is provided with a circular boss II 202. The top cover 2 is inserted into the inner wall of the upper end of the cylinder 1. The top cover 2 and the cylinder barrel 1 are sealed through an O-shaped sealing ring.

Referring to fig. 3, the closed end 3 is cylindrical. The closed end 3 is internally provided with a partition 301, the partition 301 divides the closed end 3, and a power device accommodating cavity is formed at the lower end of the partition 301. The middle part of the clapboard 301 is provided with a through hole II 3011. A plurality of limiting grooves 3012 are uniformly distributed on the upper surface of the partition board 301 in the circumferential direction. And a through hole III3013 is arranged at the bottom of the limiting groove 3012. And a sealing groove 30111 is arranged on the wall of the through hole II 3011. An O-shaped sealing ring is arranged in the sealing groove 30111 to ensure sealing.

And an external thread is arranged on the outer wall of the upper end of the closed end 3. The inner wall of the lower end of the cylinder barrel 1 is provided with internal threads, and the upper end of the closed end 3 is connected to the lower end of the cylinder barrel 1 through threads. The closed end 3 and the cylinder barrel 1 are sealed through an O-shaped sealing ring.

The power device 4 is arranged in the power device accommodating cavity, and the output end of the power device 4 penetrates into the through hole II3011 of the partition board 301. In this embodiment, the power device 4 is a motor, and an output shaft of the motor penetrates into the through hole II3011 of the partition 301.

Referring to fig. 4, the solenoid assembly 5 is cylindrical and has an annular groove I501 on its outer wall. An outer coil 502 is wound in the annular groove I501. The electromagnetic assembly 5 is located inside the cylinder 1. A plurality of bosses 503 are uniformly distributed on the lower end surface of the electromagnetic component 5 in the circumferential direction, and each boss 503 is correspondingly inserted into one limiting groove 3012 of the partition plate 301. The bottom surface of the boss 503 is provided with a through hole IV 5031. The through hole IV5031 closes the annular groove I501. The positive and negative leads of the outer coil 502 are inserted into the through hole IV5031, led out from the through hole III3013 of the partition plate 301, and connected to an external power supply. In the present embodiment, the electromagnetic assembly 5 employs a yoke.

Referring to fig. 5, the upper baffle 6 is disc-shaped, and has a circular hole 601 at the center of its upper end surface. 4 through holes V602 are evenly distributed on the end face of the upper baffle 6 in the circumferential direction. The upper baffle 6 is fixed on the upper end face of the electromagnetic assembly 5. And the end surface of the upper end of the upper baffle 6 is provided with a circular boss I603.

Referring to fig. 6, the rotor 7 is a cylinder having an extended shaft 701 at the center of the end surfaces of both ends. The rotor 7 is positioned inside the electromagnetic assembly 5, an extension shaft 701 at the lower end of the rotor 7 is inserted into the through hole II3011 of the partition plate 301 and is fixedly connected with an output shaft of the motor through a coupler, and the extension shaft 701 at the upper end of the rotor 7 is inserted into the round hole 601 of the upper baffle plate 6. The outer wall of the rotor 7 is processed with spiral ribs 702.

An inner channel is formed between the rotor 7 and the magnet assembly 5. The inner passage communicates with the through hole V602 of the upper baffle 6. An outer channel is formed between the electromagnetic component 5 and the cylinder barrel 1. The lower end of the electromagnetic assembly 5 is supported by a boss 503, and a space for connecting the inner passage and the outer passage is formed below the electromagnetic assembly 5.

Referring to fig. 7, the cylinder 8 is cylindrical and has an open upper end and a open lower end. A plurality of circulation grooves 801 and a plurality of through holes VI802 are uniformly distributed on the periphery of the inner wall of the working cylinder 8, wherein the circulation grooves 801 are positioned below the through holes VI 802. The position of the flow channel 801 is denoted as equilibrium position.

The working cylinder 8 is positioned in the cylinder barrel 1 and has a gap with the cylinder barrel 1. The lower end of the working cylinder 8 is sleeved on the circular boss I603 of the upper baffle 6, and the upper end of the working cylinder 8 is sleeved on the circular boss II202 of the top cover 2. The space between the outer wall of the cylinder 8 and the inner wall of the cylinder tube 1 is denoted as a flow chamber S1, and the space inside the cylinder 8 is denoted as an inner chamber S.

The piston assembly 9 is located within the working cylinder 8 with a clearance to the working cylinder 8. The outer wall of the piston assembly 9 is sleeved with a guide ring 901 for guiding.

The piston assembly 9 divides the internal chamber S, and an upper oil chamber S2 is formed above the piston assembly 9 and a lower oil chamber S3 is formed below the piston assembly 9.

The lower end of the piston rod 10 is mounted on the piston assembly 9, and the upper end of the piston rod penetrates out of the through hole I201 of the top cover 2.

The positioning member 11 is in the shape of a hollow disc. The outer wall of the positioning piece 11 is provided with threads. The positioning piece 11 is connected to the opening at the upper end of the cylinder barrel 1 through threads to press the end cover 6 tightly.

The damper of the present embodiment is suitable for use in aircraft landing gear and automotive vehicles and in this embodiment the equilibrium position of the piston assembly 9 is located in the middle of the cylinder 8, i.e. the position of the flow channel 801 is located in the middle of the cylinder 8.

When the damper is at rest, the piston assembly 9 is in a rest position. When the motor is electrified, the motor drives the rotor to rotate 7, and the spiral rib 702 of the rotor 7 drives the magnetorheological fluid to generate rotary flow in the inner channel. When the rotor 7 rotates, a pump effect is formed, so that the sedimentation magnetorheological fluid circularly flows, a scouring effect is formed, and sedimentation is reduced. The direction of flow is positive flow relative to the direction of rotation of the spiral rib 702: the reverse flow of the inner channel, the flow groove 801, the through hole VI802, the flow cavity S1, the outer channel and the inner channel is opposite to that of the inner channel, so that the motor can be driven regularly to reduce the sedimentation of the magnetorheological fluid of the damper when the motor is in standing.

When the electromagnetic assembly works, the outer coil 502 is electrified, and the electromagnetic assembly 5 forms a magnetic field which is uniformly distributed in an outer channel.

When the closed end 3 is pressurized, the piston rod 10 pushes the piston assembly 9 to move downwards, and the piston assembly 9 is separated from the balance position. The magnetorheological fluid in the lower oil chamber S3 enters the flow chamber S1 through the inner channel and the outer channel, and flows into the upper oil chamber S2 through the through hole VI802 of the working cylinder 8.

When the piston rod 10 is restored, the magnetorheological fluid in the upper oil cavity S2 enters the flow cavity S1 through the through hole VI802 of the working cylinder 8, and flows into the lower oil cavity S3 of the working cylinder 8 through the outer channel and the inner channel.

According to the magneto-rheological damper with the external active dispersing device, the motor directly drives the rotor 7 to rotate, and compared with the built-in motor arranged at the bottom of the damper, the magneto-rheological damper solves the problem that a gap magnetic field is weakened due to the fact that magneto-rheological fluid is filled in a gap between the rotor and the stator, and meanwhile, the motor is convenient to drive and simple to control. When the damper is compressed, the external coil 502 is electrified to generate a magnetic field in the external channel, and the damping force generated by flowing is changed due to the magneto-rheological effect, so that the damper with controllable damping is realized, the current can be controlled in a closed loop mode according to the motion state of the damper, and the magneto-rheological fluid generates larger controllable damping force for damping impact under the action of the controllable magnetic field. When the damper is in standing, the motor is electrified to drive the rotor 7 to rotate, and the spiral rib 702 of the rotor 7 drives the magnetorheological fluid to generate rotary flow in the inner channel, so that the settled magnetorheological fluid is re-dispersed, and the problem of settlement of the magnetorheological fluid is solved.

Example 2:

the embodiment discloses a magnetorheological damper with an external active dispersion device, and the magnetorheological damper with the external active dispersion device is shown in fig. 1 and fig. 2 and comprises a cylinder barrel 1, a top cover 2, a power device 4, an electromagnetic assembly 5, an upper baffle 6, a rotor 7, a working cylinder 8, a piston assembly 9, a piston rod 10 and a positioning piece 11.

The cylinder barrel 1 is open at the upper end and closed at the lower end 3. The openings on the cylinder barrel 1 are provided with internal threads. Magnetorheological fluid is filled in the cylinder barrel 1.

The middle part of the top cover 2 is provided with a through hole I201. The end face of the lower end of the top cover 2 is provided with a circular boss II 202. The top cover 2 is inserted into the inner wall of the upper end of the cylinder 1. The top cover 2 and the cylinder barrel 1 are sealed through an O-shaped sealing ring.

Referring to fig. 3, the closed end 3 is cylindrical. The closed end 3 is internally provided with a partition 301, the partition 301 divides the closed end 3, and a power device accommodating cavity is formed at the lower end of the partition 301. The middle part of the clapboard 301 is provided with a through hole II 3011. A plurality of limiting grooves 3012 are uniformly distributed on the upper surface of the partition board 301 in the circumferential direction. And a through hole III3013 is arranged at the bottom of the limiting groove 3012. And a sealing groove 30111 is arranged on the wall of the through hole II 3011. An O-shaped sealing ring is arranged in the sealing groove 30111 to ensure sealing.

And an external thread is arranged on the outer wall of the upper end of the closed end 3. The inner wall of the lower end of the cylinder barrel 1 is provided with internal threads, and the upper end of the closed end 3 is connected to the lower end of the cylinder barrel 1 through threads. The closed end 3 and the cylinder barrel 1 are sealed through an O-shaped sealing ring.

The power device 4 is arranged in the power device accommodating cavity, and the output end of the power device 4 penetrates into the through hole II3011 of the partition board 301. In this embodiment, the power device 4 is a rotary handle, and an output shaft of the rotary handle penetrates into the through hole II3011 of the partition 301.

Referring to fig. 4, the solenoid assembly 5 is cylindrical and has an annular groove I501 on its outer wall. An outer coil 502 is wound in the annular groove I501. The electromagnetic assembly 5 is located inside the cylinder 1. A plurality of bosses 503 are uniformly distributed on the lower end surface of the electromagnetic component 5 in the circumferential direction, and each boss 503 is correspondingly inserted into one limiting groove 3012 of the partition plate 301. The bottom surface of the boss 503 is provided with a through hole IV 5031. The through hole IV5031 closes the annular groove I501. The positive and negative leads of the outer coil 502 are inserted into the through hole IV5031, led out from the through hole III3013 of the partition plate 301, and connected to an external power supply. In the present embodiment, the electromagnetic assembly 5 employs a yoke.

Referring to fig. 5, the upper baffle 6 is disc-shaped, and has a circular hole 601 at the center of its upper end surface. 4 through holes V602 are evenly distributed on the end face of the upper baffle 6 in the circumferential direction. The upper baffle 6 is fixed on the upper end face of the electromagnetic assembly 5. And the end surface of the upper end of the upper baffle 6 is provided with a circular boss I603.

Referring to fig. 6, the rotor 7 is a cylinder having an extended shaft 701 at the center of the end surfaces of both ends. The rotor 7 is positioned inside the electromagnetic assembly 5, an extension shaft 701 at the lower end of the rotor 7 is inserted into a through hole II3011 of the partition plate 301 and is fixedly connected with an output shaft of the rotating handle through a coupler, and the extension shaft 701 at the upper end of the rotor 7 is inserted into a round hole 601 of the upper baffle plate 6. The outer wall of the rotor 7 is processed with spiral ribs 702.

An inner channel is formed between the rotor 7 and the magnet assembly 5. The inner passage communicates with the through hole V602 of the upper baffle 6. An outer channel is formed between the electromagnetic component 5 and the cylinder barrel 1. The lower end of the electromagnetic assembly 5 is supported by a boss 503, and a space for connecting the inner passage and the outer passage is formed below the electromagnetic assembly 5.

Referring to fig. 7, the cylinder 8 is cylindrical and has an open upper end and a open lower end. A plurality of circulation grooves 801 and a plurality of through holes VI802 are uniformly distributed on the periphery of the inner wall of the working cylinder 8, wherein the circulation grooves 801 are positioned below the through holes VI 802. The position of the flow channel 801 is denoted as equilibrium position.

The working cylinder 8 is positioned in the cylinder barrel 1 and has a gap with the cylinder barrel 1. The lower end of the working cylinder 8 is sleeved on the circular boss I603 of the upper baffle 6, and the upper end of the working cylinder 8 is sleeved on the circular boss II202 of the top cover 2. The space between the outer wall of the cylinder 8 and the inner wall of the cylinder tube 1 is denoted as a flow chamber S1, and the space inside the cylinder 8 is denoted as an inner chamber S.

The piston assembly 9 is located within the working cylinder 8 with a clearance to the working cylinder 8. The outer wall of the piston assembly 9 is sleeved with a guide ring 901 for guiding.

The piston assembly 9 divides the internal chamber S, and an upper oil chamber S2 is formed above the piston assembly 9 and a lower oil chamber S3 is formed below the piston assembly 9.

The lower end of the piston rod 10 is mounted on the piston assembly 9, and the upper end of the piston rod penetrates out of the through hole I201 of the top cover 2.

The positioning member 11 is in the shape of a hollow disc. The outer wall of the positioning piece 11 is provided with threads. The positioning piece 11 is connected to the opening at the upper end of the cylinder barrel 1 through threads to press the end cover 6 tightly.

The cylinder barrel 1 and the working cylinder 8 are filled with magnetorheological fluid.

The damper of this embodiment is adapted for use in a gun recoil, see fig. 8, in this embodiment the equilibrium position of the piston assembly 9 is near the bottom of the working cylinder 8, i.e. the flow channel 801 is near the bottom of the working cylinder 8.

When the damper is at rest, the piston assembly 9 is in a rest position. When the rotating handle is shaken, the rotating handle drives the rotor to rotate 7, and the spiral rib 702 of the rotor 7 drives the magnetorheological fluid to generate rotary flow in the inner channel. When the rotor 7 rotates, a pump effect is formed, so that the sedimentation magnetorheological fluid circularly flows, a scouring effect is formed, and sedimentation is reduced. The direction of flow is positive flow relative to the direction of rotation of the spiral rib 702: the reverse flow of the inner channel, the flow groove 801, the through hole VI802, the flow cavity S1, the outer channel and the inner channel is opposite to that of the inner channel, so that the rotating handle can be shaken regularly to reduce the sedimentation of the magnetorheological fluid of the damper when the damper is in standing.

When the electromagnetic assembly works, the outer coil 502 is electrified, and the electromagnetic assembly 5 forms a magnetic field which is uniformly distributed in an outer channel.

When the closed end 3 is pressurized, the piston rod 10 pushes the piston assembly 9 to move downwards, and the piston assembly 9 is separated from the balance position. The magnetorheological fluid in the lower oil chamber S3 enters the flow chamber S1 through the inner channel and the outer channel, and flows into the upper oil chamber S2 through the through hole VI802 of the working cylinder 8.

When the piston rod 10 is restored, the magnetorheological fluid in the upper oil cavity S2 enters the flow cavity S1 through the through hole VI802 of the working cylinder 8, and flows into the lower oil cavity S3 of the working cylinder 8 through the outer channel and the inner channel.

According to the magneto-rheological damper with the external active dispersing device, the rotor 7 is directly driven to rotate through the rotating handle, and compared with the structure that the built-in motor is installed at the bottom of the damper, the problem that a gap magnetic field is weakened due to the fact that magneto-rheological fluid is filled in a gap between the rotor and the stator is solved. When the damper is compressed, the external coil 502 is electrified to generate a magnetic field in the external channel, and the damping force generated by flowing is changed due to the magneto-rheological effect, so that the damper with controllable damping is realized, the current can be controlled in a closed loop mode according to the motion state of the damper, and the magneto-rheological fluid generates larger controllable damping force for damping impact under the action of the controllable magnetic field. When the damper is in standing, the rotating handle is shaken to drive the rotor 7 to rotate, and the spiral rib 702 of the rotor 7 drives the magnetorheological fluid to generate rotary flow in the inner channel, so that the settled magnetorheological fluid can be re-dispersed, and the problem of settlement of the magnetorheological fluid is solved.

Example 3:

the embodiment discloses a basic implementation manner, and discloses a magnetorheological damper with an external active dispersion device, which is shown in fig. 1 and 2 and comprises a cylinder barrel 1, a power device 4, an electromagnetic assembly 5 and a rotor 7.

The cylinder barrel 1 is open at the upper end and closed at the lower end 3. The openings on the cylinder barrel 1 are provided with internal threads. Magnetorheological fluid is filled in the cylinder barrel 1.

The power device 4 is positioned outside the cylinder barrel 1, the power device 4 is connected with the closed end 9 of the cylinder barrel 7, and the output end of the power device 4 penetrates into the closed end 3 of the cylinder barrel 1.

Referring to fig. 4, the solenoid assembly 5 is cylindrical and has an annular groove I501 on its outer wall. An outer coil 502 is wound in the annular groove I501. The electromagnetic assembly 5 is located inside the cylinder 1.

Referring to fig. 6, the rotor 7 is a cylinder, and the center of the end surfaces of both ends of the rotor 7 has an extended shaft 701. The rotor 7 is positioned inside the cylinder barrel 1, and the extension shaft 701 of the rotor 7 is inserted into the through hole II3011 of the partition board 301 and is fixedly connected with the output end of the external motor 4 through a coupler.

The power device 4 is driven, the output end of the power device 4 drives the rotor to rotate 7, and the magnetorheological fluid is driven by the rotor 7 to generate rotary flow in the cylinder barrel 1. The rotor 7 forms a pump effect when rotating, so that the sedimentary magnetorheological fluid circularly flows to form a scouring effect, the sedimentation is reduced, and the power device 4 can be driven at regular time to reduce the sedimentation of the magnetorheological fluid of the damper when standing.

In operation, the outer coil 502 is energized and the electromagnetic assembly 5 forms a magnetic field.

According to the magneto-rheological damper with the external active dispersing device, the power device 4 is driven to directly drive the rotor 7 to rotate, and compared with the built-in motor arranged at the bottom of the damper, the problem that a gap magnetic field is weakened due to the fact that magneto-rheological fluid is filled in a gap between the rotor and the stator is solved, and meanwhile, the power device 4 is convenient to drive and simple to control. When the damper is compressed, the outer coil 502 is electrified to generate a magnetic field, the damping force generated by flowing is changed due to the magneto-rheological effect, so that the damper with controllable damping is realized, the current can be controlled in a closed loop mode according to the motion state of the damper, and the magneto-rheological fluid generates larger controllable damping force for damping impact under the action of the controllable magnetic field. When the damper is in standing, the power device 4 is driven, the power device 4 drives the rotor 7 to rotate, and the spiral ribs 702 of the rotor 7 drive the magnetorheological fluid to rotate and flow, so that the settled magnetorheological fluid is redispersed, and the settling problem of the magnetorheological fluid is solved.

Example 4:

the main structure of this embodiment is the same as embodiment 3, and further includes a top cover 2, an upper baffle 6, a working cylinder 8, a piston assembly 9, a piston rod 10 and a positioning member 11.

The middle part of the top cover 2 is provided with a through hole I201. The top cover 2 is inserted into the inner wall of the upper end of the cylinder 1. The top cover 2 and the cylinder barrel 1 are sealed through an O-shaped sealing ring.

The lower end of the electromagnetic component 5 is supported on the closed end 3. The rotor 7 is located inside the electromagnetic assembly 5, an inner channel is formed between the rotor 7 and the electromagnetic assembly 5, and an outer channel is formed between the electromagnetic assembly 5 and the cylinder barrel 1.

Referring to fig. 5, the upper baffle 6 is disc-shaped, and has a circular hole 601 at the center of its upper end surface. 4 through holes V602 are evenly distributed on the end face of the upper baffle 6 in the circumferential direction. The upper baffle 6 is fixed on the upper end face of the electromagnetic assembly 5. The through hole V602 communicates with the inner passage. An extension shaft 701 branches from the end face of the rotor 7 far away from the closed end 3, and the extension shaft 701 is inserted into the round hole 601 of the upper baffle plate 6.

Referring to fig. 7, the cylinder 8 is cylindrical and has an open upper end and a open lower end. A plurality of circulation grooves 801 and a plurality of through holes VI802 are uniformly distributed on the periphery of the inner wall of the working cylinder 8, wherein the circulation grooves 801 are positioned below the through holes VI 802. The position of the flow channel 801 is denoted as equilibrium position.

The working cylinder 8 is positioned in the cylinder barrel 1 and has a gap with the cylinder barrel 1. The lower end of the working cylinder 8 is arranged on the upper end face of the upper baffle 6, and the upper end of the working cylinder 8 is arranged on the lower end face of the top cover 2. The space between the outer wall of the cylinder 8 and the inner wall of the cylinder tube 1 is denoted as a flow chamber S1, and the space inside the cylinder 8 is denoted as an inner chamber S.

The piston assembly 9 is located within the working cylinder 8 with a clearance to the working cylinder 8. The outer wall of the piston assembly 9 is sleeved with a guide ring 901 for guiding.

The piston assembly 9 divides the internal chamber S, and an upper oil chamber S2 is formed above the piston assembly 9 and a lower oil chamber S3 is formed below the piston assembly 9.

The lower end of the piston rod 10 is mounted on the piston assembly 9, and the upper end of the piston rod penetrates out of the through hole I201 of the top cover 2.

The positioning member 11 is in the shape of a hollow disc. The outer wall of the positioning piece 11 is provided with threads. The positioning piece 11 is connected to the opening at the upper end of the cylinder barrel 1 through threads to press the end cover 6 tightly.

At rest, the piston assembly 9 is in a rest position. When the power device 4 is driven, the power device 4 drives the rotor to rotate 7, and the rotor 7 drives the magnetorheological fluid to generate rotary flow in the inner channel. When the rotor 7 rotates, a pump effect is formed, so that the sedimentation magnetorheological fluid circularly flows, a scouring effect is formed, and sedimentation is reduced. Therefore, the external motor 4 can be driven at regular time to reduce the sedimentation of the magnetorheological fluid of the damper when the damper is in standing.

When the electromagnetic assembly works, the outer coil 502 is electrified, and the electromagnetic assembly 5 forms a magnetic field which is uniformly distributed in an outer channel.

When the closed end 3 is pressurized, the piston rod 10 pushes the piston assembly 9 to move downwards, and the piston assembly 9 is separated from the balance position. The magnetorheological fluid in the lower oil chamber S3 enters the flow chamber S1 through the inner channel and the outer channel, and flows into the upper oil chamber S2 through the through hole VI802 of the working cylinder 8.

When the piston rod 10 is restored, the magnetorheological fluid in the upper oil cavity S2 enters the flow cavity S1 through the through hole VI802 of the working cylinder 8, and flows into the lower oil cavity S3 of the working cylinder 8 through the outer channel and the inner channel.

Example 5:

the main structure of this embodiment is the same as that of embodiment 4, and further, an annular boss I603 is provided on the end surface of the upper end of the upper baffle 6. The end face of the lower end of the top cover 2 is provided with a circular boss II 202.

The lower end of the working cylinder 8 is sleeved on the circular boss I603, and the upper end of the working cylinder 8 is sleeved on the circular boss II 202.

Example 6:

the main structure of this embodiment is the same as that of embodiment 3, and further, the power device 4 is a motor, and an output shaft of the motor penetrates into the through hole II3011 of the partition board 301.

Example 7:

the main structure of this embodiment is the same as that of embodiment 3, and further, the power device 4 is a rotating handle, and an output shaft of the rotating handle penetrates into the through hole II3011 of the partition board 301.

Example 8:

the main structure of this embodiment is the same as that of embodiment 3, and further, referring to fig. 7, the closed end 3 is cylindrical. The closed end 3 is internally provided with a partition 301, the partition 301 divides the closed end 3, and a power device accommodating cavity is formed at the lower end of the partition 301. The middle part of the clapboard 301 is provided with a through hole II 3011.

The upper end of the closed end 3 is inserted into the opening at the lower end of the cylinder barrel 1. The closed end 3 and the cylinder barrel 1 are sealed through an O-shaped sealing ring.

The external motor 4 is installed in the power device accommodating cavity, and the output end of the external motor penetrates into the through hole II3011 of the partition plate 301. An extension shaft 701 at the lower end of the rotor 7 penetrates through a through hole II3011 of the partition board 301 and is fixedly connected with the output end of the external motor 4 through a coupler.

A plurality of limiting grooves 3012 are uniformly distributed on the upper surface of the partition board 301 in the circumferential direction. And a through hole III3013 is arranged at the bottom of the limiting groove 3012. A plurality of bosses 503 are extended from the lower end of the electromagnetic assembly 5, and each boss 503 is inserted into a corresponding limit slot 3012 of the partition 301.

Example 9:

the main structure of this embodiment is the same as that of embodiment 8, and further, a sealing groove 30111 is disposed on the hole wall of the through hole II 3011. An O-shaped sealing ring is arranged in the sealing groove 30111 to ensure sealing.

Example 10:

the main structure of this embodiment is the same as that of embodiment 8, and further, a through hole IV5031 is provided on the bottom surface of the boss 503. The through hole IV5031 closes the annular groove I501. The positive and negative leads of the outer coil 502 are inserted into the through hole IV5031, led out from the through hole III3013 of the partition plate 301, and connected to an external power supply.

Example 11:

the main structure of this embodiment is the same as that of embodiment 3, and further, the outer wall of the rotor 7 is provided with spiral ribs 702 or spiral blades, in this embodiment, the outer wall of the rotor 7 is processed with spiral blades.

Example 12:

the main structure of this embodiment is the same as that of embodiment 3, and further, in this embodiment, the electromagnetic assembly 5 is a magnetic yoke.