CN219299845U

CN219299845U - Magneto-rheological damper with side-arranged energy accumulator

Info

Publication number: CN219299845U
Application number: CN202320223160.7U
Authority: CN
Inventors: 彭志召
Original assignee: Beijing Pingzhen Technology Co ltd
Current assignee: Beijing Pingzhen Technology Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-07-04
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a magneto-rheological damper with a side-mounted energy accumulator, which relates to the technical field of dampers and comprises a main cylinder body, wherein a floating piston is arranged in the main cylinder body and divides the inner cavity of the main cylinder body into an oil cavity and a gas cavity, a damping generating mechanism is arranged in the oil cavity, and the gas cavity is communicated with a gas energy storage cavity; when the damping generating mechanism moves up and down in the oil cavity, the floating piston floats up and down in the cavity of the main cylinder body, the volume of the gas cavity changes along with the floating piston, and the gas in the gas cavity can be completely transferred to the inside of the gas energy storage cavity, so that the floating piston can be compressed to the bottom of the main cylinder body, the influence of the existence of the gas cavity on the stroke of the piston rod is avoided, and in addition, the problem of blockage cannot occur because only gas passes through a through hole or a pipeline for communicating the gas cavity and the gas energy storage cavity.

Description

Magneto-rheological damper with side-arranged energy accumulator

Technical Field

The utility model relates to the technical field of vibration absorbers, in particular to a magneto-rheological vibration absorber with a side-mounted energy accumulator.

Background

The magneto-rheological shock absorber responds to road conditions and driving environments in real time by utilizing electromagnetic response based on input information from monitoring vehicle bodies and wheel motion sensors; magnetorheological fluid is a magnetic soft particle suspension, and when the fluid is injected into an electromagnetic coil in a piston of a shock absorber, the magnetic field of the coil changes the rheological property (or generates fluid resistance), so that a damping force with rapid response and strong controllability is generated under the condition of no electromechanical control valve and simple mechanical device; the magneto-rheological shock absorber has the characteristics of high damping force adjustable multiple, easy realization of computer variable damping real-time control, compact structure, small external input energy and the like, and is increasingly highly valued by the engineering world.

Patent CN204572896U discloses a drilling magnetorheological damper, which comprises a working cylinder and a piston rod, wherein the end of the piston rod is fixed with a piston, the body of the piston is provided with a plurality of drain holes, the aperture of each drain hole increases gradually from the middle to the two ends, the middle of the piston is provided with a coil group, a connecting wire of the coil group passes through the inside of the piston rod to be connected with an external power supply, and the inside of the working cylinder is divided into a liquid cavity and an air cavity by a floating piston; patent CN105003585a discloses a variable cross-section piston magnetorheological damper, which is provided with a compensation cylinder barrel at one side of the damper cylinder barrel, and a movable floating plug is arranged in the compensation cylinder barrel to divide the damper cylinder barrel into an air cavity and a liquid cavity, wherein the liquid cavity is communicated with the damper cylinder barrel; from the foregoing, how to provide a magnetorheological damper capable of ensuring the stroke of a piston rod without blocking the piston rod is a technical problem to be solved in the art.

Disclosure of Invention

The utility model aims to solve the technical problems and provide the damper with the side-mounted accumulator, which is characterized in that the gas energy storage cavity is arranged, and the setting position of the floating piston is adjusted at the same time, so that the damper which has no blockage problem and can ensure the stroke of the piston rod is provided.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a magneto-rheological damper with a side-mounted energy accumulator, which comprises a main cylinder body, wherein a floating piston is arranged in the main cylinder body, the floating piston divides an inner cavity of the main cylinder body into an oil cavity and a gas cavity, a damping generating mechanism is arranged in the oil cavity, and the gas cavity is communicated with a gas energy storage cavity.

Preferably, the gas energy storage device further comprises an energy storage cylinder body, wherein the energy storage cylinder body is connected with the main cylinder body through a pipeline, and the gas energy storage cavity is arranged in the energy storage cylinder body.

Preferably, the gas energy storage device further comprises an energy storage cylinder body, wherein the energy storage cylinder body is rigidly connected with the main cylinder body, and the gas energy storage cavity is arranged inside the energy storage cylinder body.

Preferably, the main cylinder body comprises a shell, one end of the shell, which is close to the gas chamber, is connected with a base, and the other end of the shell is connected with a guide sealing seat.

Preferably, the guide sealing seat is a boss-shaped structure with a through hole in the center, the diameter of the small diameter end of the boss-shaped structure is the same as the inner diameter of the shell, and the diameter of the large diameter end of the boss-shaped structure is larger than the inner diameter of the shell and smaller than the outer diameter of the shell.

Preferably, the damping generating mechanism comprises a damping piston, the damping piston divides the oil liquid chamber into an upper damping chamber and a lower damping chamber, one end, far away from the gas chamber, of the damping piston is connected with a piston rod, and the other end of the piston rod penetrates through the guide sealing seat and extends to the outside of the main cylinder body.

Preferably, at least two radial sealing structures are arranged between the guide sealing seat and the piston rod.

Preferably, the damping piston is provided with a plurality of exciting coils and a damping channel communicated with the upper damping cavity and the lower damping cavity, and the magnetic field direction generated by the exciting coils crosses the damping channel.

Preferably, the gas energy storage cavity and the gas cavity are filled with high-pressure inert gas, and the oil cavity is filled with magnetorheological fluid.

Preferably, the side wall of the accumulator cylinder is provided with an inflator mounting hole.

Compared with the prior art, the utility model has the following technical effects:

according to the utility model, the energy storage cylinder body is arranged beside one side of the main cylinder body, the floating piston is arranged in the main cylinder body and is used for dividing the cavity in the main cylinder body into the gas cavity and the oil cavity, wherein the gas cavity is communicated with the gas energy storage cavity in the energy storage cylinder body, in the working process, the floating piston floats up and down in the cavity of the main cylinder body, the volume of the gas cavity changes along with the change, and the gas in the gas cavity can be completely transferred into the gas energy storage cavity, so that the floating piston can be compressed to the bottom of the main cylinder body, the influence of the existence of the gas cavity on the stroke of the piston rod is avoided, and in addition, the problem of blockage cannot occur because only gas passes through a through hole or a pipeline for communicating the gas cavity and the gas energy storage cavity.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a magneto-rheological damper with a side-by-side accumulator in embodiment 1;

FIG. 2 is an enlarged view of a portion of the area A of FIG. 1;

FIG. 3 is an enlarged view of a portion of region B of FIG. 1;

FIG. 4 is a schematic structural view of a guide seal holder and a housing connected by a threaded structure;

fig. 5 is a schematic structural diagram of the connection of the guide seal seat and the shell by adopting a snap spring structure;

FIG. 6 is a schematic diagram of a connection between a guide seal holder and a housing using a crimping structure;

FIG. 7 is a schematic diagram of a damping generating mechanism;

FIG. 8 is a schematic diagram of a magneto-rheological damper with a side-by-side accumulator in example 2;

wherein, 1, a base, 2, a floating piston, 3, an oil liquid chamber, 4, a gas chamber, 5, a damping piston, 6, a shell, 7, a sealing seat fixing screw cap, 8, a guiding sealing seat, 9, a piston rod, 10, a gas energy storage chamber, 11 and an inflator mounting hole, 12, a first sealing groove, 13, a second sealing groove, 14, a third sealing groove, 15, a piston outer sleeve, 16, a hose, 17, an exciting coil, 18, a damping channel, 19, a lower end piece, 20, a piston iron core, 21, an upper end piece, 22 and a clamp spring.

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 can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Example 1:

as shown in fig. 1, this embodiment provides an energy accumulator side-mounted magnetorheological damper, it includes the main cylinder body and the energy accumulator cylinder body of side-mounted one side of the main cylinder body, wherein the main cylinder body includes casing 6, base 1 and direction seal seat, as shown in fig. 2, in this embodiment base 1 and casing 6 pass through the screw thread structure and dismantle the connection, in order to guarantee the leakproofness of hookup location, this embodiment is provided with first seal groove 12 in the inboard of base 1 internal thread end, when base 1 is connected with casing 6, firstly set up rubber seal in first seal groove 12, then screw base 1, at this moment, can form radial seal structure between base 1 and the casing 6 lateral wall, compared with axial seal structure, radial seal relies on the extrusion between base 1 inner wall and the casing 6 outer wall to guarantee the seal, it is difficult for taking place seal failure because of base 1's not hard up, and then make the seal more reliable. In addition, the base 1 and the shell 6 can be connected into a whole by adopting a welding mode, and a sealing structure can be omitted between the base and the shell.

As shown in fig. 1, the other end of the housing 6 is provided with a guiding sealing seat 8, the guiding sealing seat 8 is a boss-shaped structure with a through hole in the center, the diameter of the small diameter end is the same as the inner diameter of the housing 6, and the diameter of the large diameter end is larger than the inner diameter of the housing 6 and smaller than the outer diameter of the housing 6; as shown in fig. 3, the guide seal seat 8 is detachably connected with the housing 6 through the seal seat fixing nut 7, specifically, during installation, the small diameter end of the guide seal seat 8 extends into the housing 6, the large diameter end is clamped at the end of the housing 6, the seal seat fixing nut 7 is provided with an internal thread matched with the external thread of the housing 6, and after the seal seat fixing nut 7 is screwed, the large diameter end of the guide seal seat 8 is clamped between the seal seat fixing nut 7 and the housing 6, so that the guide seal seat 8 is fixed.

It should be noted that: the connection mode between the guiding sealing seat 8 and the shell 6 is not unique, and besides the connection mode, the guiding sealing seat 8 and the shell 6 can be connected by adopting a threaded structure shown in fig. 4, or by adopting a snap spring structure shown in fig. 5, or by adopting a crimping structure shown in fig. 6.

As shown in fig. 3, the inner wall of the through hole of the guide sealing seat 8 and the outer wall of the small diameter end are respectively provided with a second sealing groove 13 and a third sealing groove 14, and when in installation, sealing rings are arranged at the corresponding sealing groove positions, so that the sealing between the piston rod 9 and the guide sealing seat 8 and between the guide sealing seat 8 and the shell 6 can be realized, and the tightness of the cavity inside the shell 6 is ensured; in order to improve the sealing effect, the second sealing groove 13 and the third sealing groove 14 are provided in plurality, and in this embodiment, the second sealing groove 13 and the third sealing groove 14 are provided in 2.

As shown in fig. 1, in the embodiment, a main cylinder body and an accumulator cylinder body are in an integrated structure, a floating piston 2 is arranged in the main cylinder body, and the floating piston 2 divides the inner cavity of the main cylinder body into an oil cavity 3 and a gas cavity 4; the gas chamber 4 and the gas energy storage cavity 10 in the accumulator cylinder are filled with high-pressure inert gas, nitrogen is adopted in the embodiment, and the gas chamber 4 and the gas energy storage cavity 10 are communicated through a through hole structure; the magnetorheological fluid is filled in the oil cavity 3, and a damping generation mechanism is arranged in the oil cavity, and comprises a damping piston 5 as shown in fig. 4, the oil cavity 3 is divided into an upper damping cavity and a lower damping cavity by the damping piston 5, one end, far away from the gas cavity 4, of the damping piston 5 is detachably connected with a piston rod 9, and the other end of the piston rod 9 penetrates through the guide sealing assembly and extends to the outside of the main cylinder body.

As shown in fig. 7, the damping piston 5 comprises a piston iron core 20, a plurality of ring grooves are formed in the piston iron core 20, and exciting coils 17 are wound in the ring grooves; the piston iron core 20 is sleeved with the piston outer sleeve 15, and the two ends of the piston iron core 20 are respectively provided with an upper end piece 21 and a lower end piece 19 for supporting and fixing the piston outer sleeve 15, so that a uniform damping channel 18 is formed between the piston outer sleeve 15 and the piston iron core 20 for circulation of magnetorheological fluid; when the exciting coil 17 is loaded with current, a magnetic field crossing the damping channel 18 is generated, the larger the current loaded by the exciting coil 17 is, the larger the magnetic field intensity in the damping channel 18 is, so that the intensity of rheological effect generated by the magnetorheological fluid in the damping channel 18 is also larger, and the magnetorheological fluid in the damping channel 18 shows larger yield strength.

As shown in fig. 1, the side wall of the accumulator cylinder is provided with an inflator mounting hole 11, the inflator in this embodiment is an air tap, and nitrogen can be supplemented into the gas energy storage cavity 10 and the gas cavity 4 through the air tap structure.

The working process of the magneto-rheological damper with the side-arranged energy accumulator in the embodiment is as follows:

the piston rod 9 enters and exits the main cylinder body to drive the damping piston 5 to slide up and down in the main cylinder body; when the piston rod 9 enters the cylinder body, the damping piston 5 is pushed to move upwards, magnetorheological fluid in the upper damping cavity is extruded, the lower damping cavity is vacuumized, and the magnetorheological fluid in the upper damping cavity enters the lower damping cavity from the upper damping cavity through the damping channel 18 under the drive of pressure difference; when the piston rod 9 extends out of the main cylinder body, the damping piston 5 is driven to move downwards, magnetorheological fluid in the lower damping cavity is extruded, the pressure of the upper damping cavity is reduced, and the magnetorheological fluid in the lower damping cavity enters the upper damping cavity from the lower damping cavity through the damping channel 18 under the drive of pressure difference; by loading different amounts of current to the exciting coil 17 on the damping piston 5, the magnetic field intensity in the piston damping channel 18 is changed, so that the intensity of rheological effect of magnetorheological fluid in the damping channel 18 is changed, and the damping force of the magnetorheological shock absorber is regulated and controlled.

Example 2:

as shown in fig. 8, unlike embodiment 1, the main cylinder and the accumulator cylinder in this embodiment are of a split type structure, and the gas accumulation chamber 10 and the gas chamber 4 are connected by a pipe, and in this embodiment, the two are connected by a hose 16.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. The utility model provides a magnetic current becomes shock absorber by side of energy storage ware, its characterized in that includes the main cylinder body, the inside floating piston that is provided with of main cylinder body, floating piston will the inner chamber of main cylinder body is divided into fluid cavity and gas chamber, be provided with damping generating mechanism in the fluid cavity, gas chamber intercommunication has gas energy storage chamber.

2. The accumulator side-mounted magnetorheological damper of claim 1, further comprising an accumulator cylinder connected to the main cylinder by a pipeline, wherein the gas accumulation chamber is disposed within the accumulator cylinder.

3. The accumulator side-mounted magnetorheological damper of claim 1, further comprising an accumulator cylinder rigidly connected to the main cylinder, wherein the gas storage chamber is disposed within the accumulator cylinder.

4. A magneto-rheological damper with a side-mounted accumulator as claimed in claim 2 or 3 wherein the main cylinder comprises a housing, one end of the housing adjacent to the gas chamber is connected with a base, and the other end is connected with a guiding seal seat.

5. The accumulator side-mounted magnetorheological damper of claim 4, wherein the guide seal seat is a boss-shaped structure with a through hole in the center, the diameter of the small diameter end is the same as the inner diameter of the shell, and the diameter of the large diameter end is larger than the inner diameter of the shell and smaller than the outer diameter of the shell.

6. The accumulator side-mounted magnetorheological damper of claim 5, wherein the damping generating mechanism comprises a damping piston dividing the oil chamber into an upper damping chamber and a lower damping chamber, wherein a piston rod is connected to one end of the damping piston away from the gas chamber, and the other end of the piston rod extends to the outside of the main cylinder body through the guide seal seat.

7. The accumulator side-mounted magnetorheological damper of claim 6, wherein at least two radial sealing structures are disposed between the guide seal seat and the piston rod.

8. The accumulator side-mounted magnetorheological damper of claim 7, wherein the damping piston is provided with a plurality of exciting coils and a damping channel communicating the upper damping chamber and the lower damping chamber, wherein the direction of a magnetic field generated by the exciting coils crosses the damping channel.

9. The accumulator side-mounted magnetorheological damper of claim 8, wherein the gas accumulation chamber and the gas chamber are filled with high pressure inert gas, and the oil chamber is filled with magnetorheological fluid.

10. The accumulator side-mounted magnetorheological damper of claim 9, wherein the accumulator cylinder has an inflator mounting hole in a sidewall thereof.