CN211667076U - External valve type double-rod magnetorheological damper based on multi-stage circumferential flow mode - Google Patents
External valve type double-rod magnetorheological damper based on multi-stage circumferential flow mode Download PDFInfo
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- CN211667076U CN211667076U CN201922361714.6U CN201922361714U CN211667076U CN 211667076 U CN211667076 U CN 211667076U CN 201922361714 U CN201922361714 U CN 201922361714U CN 211667076 U CN211667076 U CN 211667076U
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Abstract
The utility model discloses an external valve type double-rod magneto-rheological damper based on a multistage circumferential flow mode, which comprises a damper body, a first connecting oil pipe, a second connecting oil pipe and an external valve, wherein a recovery cavity and a compression cavity of the damper body are communicated with the connecting oil pipe through the external valve; the utility model relates to a can compromise longer effective damping passageway, higher magnetic field utilization ratio, less volume, the external valve formula double-rod magneto rheological damper based on multistage circumference flow pattern of aspect advantages such as stronger commonality to further improve the precision of damping force regulation and control, simplify attenuator body structure, reduce cost, reinforcing heat-sinking capability, be convenient for installation and maintenance, can extensively match in fields such as the large-scale machinery that needs great damping force and broad damping range, car, lathe, bridge, building.
Description
Technical Field
The utility model belongs to magnetic current becomes the attenuator field, especially an external valve formula double-rod magnetic current becomes attenuator based on multistage circumference flow pattern.
Background
The magnetorheological fluid damper with excellent performance has the advantages of longer effective damping force channel, higher magnetic field utilization rate, smaller volume, stronger universality, lower energy consumption, easy installation and maintenance and the like. For example, a compound magnetorheological fluid shock absorber recorded in chinese patent documents CN207333554U and CN207961387U, and a magnetorheological fluid shock absorber with independently and continuously regulated damping force and damping force to recover based on a three-cylinder structure and a multistage circumferential flow mode external valve can give consideration to advantages of an effective damping force channel, a higher magnetic field utilization rate, a smaller volume, a stronger universality, a lower energy consumption, and the like. However, as a structure with advanced technology, there are certain limitations in further improving the precision of damping force regulation, simplifying the damper body structure, reducing the cost, improving the versatility, and facilitating installation and maintenance.
Therefore, the utility model provides an external valve formula double-rod magneto rheological damper based on multistage circumference flow pattern, it can compromise the whole advantages of patent to based on single cylinder structure and external valve further improve the precision of damping force regulation and control, simplify attenuator body structure, reduce cost, do benefit to the heat dissipation, improve the commonality, be convenient for installation and maintenance.
Disclosure of Invention
The utility model provides an external valve formula double-rod magneto rheological damper based on multistage circumference flow pattern on the basis of compromise longer effective damping force passageway, higher magnetic field utilization ratio, less volume, stronger commonality, lower energy consumption, the advantage of easily installing and maintaining, the overall arrangement that adopts single cylinder and external valve to be main can further simplify the precision that attenuator structure, reduce cost, improvement damping force regulated and control.
For solving the technical problem, the utility model discloses the technical scheme who takes includes: the utility model provides an external valve formula double-rod magneto rheological damper based on multistage circumference flow pattern which characterized in that: the damper comprises a damper body (A), a first connecting oil pipe (C1), a second connecting oil pipe (C2) and an external valve (D), wherein a recovery cavity and a compression cavity of the damper body are communicated with the connecting oil pipe through the external valve; the damper body mainly comprises a lifting lug (A1), a piston rod (A2), a guide assembly (A4), a working cylinder barrel (A7) and a piston (A8); the piston rod (A2) can slide in the working cylinder barrel (A7) through the piston (A8), the piston rod is in sliding fit with a guide assembly coaxially fixed on the working cylinder barrel, the piston (A8) divides the working cylinder barrel (A7) into a recovery cavity (X) and a compression cavity (Y), magnetorheological fluid (Z) is additionally arranged in the recovery cavity (X) and the compression cavity (Y), and the lifting lug (A1) is fixed at the outer end of the piston rod (A2); the piston rod is composed of two rod bodies and is respectively connected with two ends of the piston.
According to the technical scheme, the technical scheme is further improved, and a first oil seal (A3) and a second oil seal (A5) are respectively arranged on the front side and the back side of the guide assembly (A4).
According to the technical scheme, the technical scheme is further improved, and a first sealing ring (A6) is arranged on the side surface of the inner end of the guide assembly.
In a further improvement of the technical scheme, a second sealing ring (A9) is arranged on the side surface of the piston (A8).
The technical scheme is further improved, and piston buffering pads (A10) are arranged on the front end face and the back end face of the piston (A8).
The technical scheme is further limited, the external valve (D) is composed of an adjusting mechanism (D1), a magnetic conduction cylinder (D2), a valve cover (D3), a coil (D4), a valve seat (D5), a magnetic isolation cylinder (D6), a first circumferential channel (D7), a first magnetic conduction block (D8), a second circumferential channel (D9) and a second magnetic conduction block (D10), the magnetic isolation cylinder (D6) is positioned in the valve seat (D5), the magnetic conduction cylinder (D2) and the magnetic isolation cylinder (D6) are combined into a hollow cylinder, the coil (D4) is sleeved on the magnetic conduction cylinder (D2) and the magnetic isolation cylinder (D6), the adjusting mechanism (D1) is fixed in the upper end of the magnetic conduction cylinder (D2), the second magnetic conduction block (D867) is fixed in the lower end of the magnetic conduction cylinder (D3687458), the first circumferential channel (D7), the first magnetic conduction block (D7) and the second circumferential channel (D7) are fixed in sequence from bottom to top of the magnetic isolation cylinder (D36874), and the first circumferential channel (D7), The second magnetic conduction blocks (D10) are respectively provided with a through hole, the valve seat is communicated with the adjusting mechanism through the first circumferential channel (D7), the second circumferential channel and the through holes on the first magnetic conduction block (D8) and the second magnetic conduction block (D10), the valve cover (D3) is connected with the valve seat (D5), and the valve cover (D3) is used for pressing the magnetic conduction cylinder (D2) and the coil (D4); the valve seat (D5) is communicated with a second oil port (b) on the damper body (A) through a second connecting oil pipe (C2), the adjusting mechanism (D1) is communicated with a first oil port (a) on the damper body (A) through a first connecting oil pipe (C1), and magnetorheological fluid (Z) in the damper body (A) is subjected to damping regulation through the external valve (D); the valve seat (D5), the valve cover (D3), the first magnetic conduction block (D8), the second magnetic conduction block (D10) and the magnetic conduction cylinder (D2) are made of magnetic conduction materials.
The technical scheme is further improved, a step (T) is machined on the valve seat (D5), the magnetism isolating cylinder (D6) is coaxially positioned and matched with the valve seat (D5) through the step (T), the magnetism conducting cylinder (D2) is aligned with the magnetism isolating cylinder (D6) and coaxially installed, and the magnetism conducting cylinder (D2) is coaxially matched with the adjusting mechanism (D1).
According to the technical scheme, the adjusting mechanism is further improved, and a third sealing ring (D11) is arranged on the side surface of the adjusting mechanism.
The technical scheme is further limited, the first circumferential channel (D7) and the second circumferential channel (D9) are identical in structure and comprise circular plates (D91), annular grooves (D92) are formed in the front and back surfaces of each circular plate, and the annular grooves in the two surfaces are communicated through holes (D93) in the bottoms of the grooves; the groove bottom of the annular groove is made of magnetic conductive materials, and the annular wall of the annular groove is made of magnetic isolation materials.
The technical scheme is further improved, and the damper body (A) and the external valve (D) are connected into an integral structure through a bracket (B).
The utility model has the advantages that: 1) the layout mainly comprising the single cylinder and the external valve is adopted, the damper structure can be further simplified, the cost is reduced, the heat dissipation is facilitated, the damping force is completely regulated and controlled in a circumferential channel of the external valve, various problems caused by a valve system in the cylinder barrel are avoided, and the regulation and control precision is further improved; 2) the damper is of a double-rod structure, the installation mode is various, and the structure is simple; the external valve is arranged outside the damper body, so that the external valve is convenient to disassemble and assemble and is beneficial to detection and maintenance; 3) the utility model relates to a can compromise longer effective damping passageway, higher magnetic field utilization ratio, less volume, the external valve formula double-rod magneto rheological damper based on multistage circumference flow pattern of aspect advantages such as stronger commonality to further improve the precision of damping force regulation and control, simplify attenuator body structure, reduce cost, reinforcing heat-sinking capability, be convenient for installation and maintenance, can extensively match in fields such as the large-scale machinery that needs great damping force and broad damping range, car, lathe, bridge, building.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic half-section of a three-dimensional overall structure of the present invention.
FIG. 3 is a schematic semi-sectional view of the outboard valve of the present invention.
FIG. 4 is a schematic half-section of a circumferential channel.
Fig. 5 is a schematic view of a magnetorheological fluid flow path in a compression stage damper.
Fig. 6 is a schematic view of a magnetorheological fluid flow path in an outboard valve during a compression phase.
Detailed Description
As shown in fig. 1 and fig. 2, the external valve type dual-rod magnetorheological damper based on the multi-stage circumferential flow mode is characterized in that: the damper comprises a damper body (A), a first connecting oil pipe (C1), a second connecting oil pipe (C2) and an external valve (D), wherein a recovery cavity and a compression cavity of the damper body are communicated with the connecting oil pipe through the external valve; the damper body mainly comprises a lifting lug (A1), a piston rod (A2), a guide assembly (A4), a working cylinder barrel (A7) and a piston (A8); the piston rod (A2) can slide in the working cylinder barrel (A7) through the piston (A8), the piston rod is in sliding fit with a guide assembly coaxially fixed on the working cylinder barrel, the piston (A8) divides the working cylinder barrel (A7) into a recovery cavity (X) and a compression cavity (Y), magnetorheological fluid (Z) is additionally arranged in the recovery cavity (X) and the compression cavity (Y), and the lifting lug (A1) is fixed at the outer end of the piston rod (A2); the piston rod consists of two rod bodies which are respectively connected with two ends of the piston; the structure of the guide assembly is the same as that of a cylinder cover of the hydraulic oil cylinder;
as shown in fig. 1 and fig. 2, a first oil seal (A3) and a second oil seal (a 5) are respectively arranged on the front side and the back side of the guide assembly (a 4), and the structure is used for eliminating a gap between the piston rod (a 2) and the guide assembly (a 4) and avoiding leakage of magnetorheological fluid;
as shown in fig. 1 and 2, a first sealing ring (a 6) is arranged on the side surface of the inner end of the guide assembly, and the structure is used for eliminating a gap between the guide assembly and the working cylinder barrel and avoiding leakage of magnetorheological fluid;
as shown in fig. 1 and 2, a second sealing ring (a 9) is arranged on the side surface of the piston (A8), and the structure is used for eliminating the gap between the piston and the working cylinder;
as shown in fig. 1 and 2, the front and back end surfaces of the piston (A8) are provided with piston buffer pads (a 10) for preventing the piston from colliding with the guide assembly;
as shown in fig. 1 and 2, the parts in the damper body can be connected in a manner of referring to a connecting structure of a conventional double-piston-rod hydraulic cylinder;
as shown in fig. 3, the external valve (D) is composed of an adjusting mechanism (D1), a magnetic conduction cylinder (D2), a valve cover (D3), a coil (D4), a valve seat (D5), a magnetic isolation cylinder (D6), a first circumferential channel (D7), a first magnetic conduction block (D8), a second circumferential channel (D9), and a second magnetic conduction block (D10), the magnetic isolation cylinder (D6) is positioned in the valve seat (D5), the magnetic conduction cylinder (D2) is combined with the magnetic isolation cylinder (D6) into a hollow cylinder body through a spigot structure, the coil (D4) is sleeved on the magnetic conduction cylinder (D2) and the magnetic isolation cylinder (D6) in an interference manner, the adjusting mechanism (D1) is fixed in the upper end of the magnetic conduction cylinder (D2) in an interference manner, the second magnetic conduction block (D10) is fixed in the lower end of the magnetic conduction cylinder (D2) in a welding or interference manner, the first circumferential channel (D7), the first circumferential channel (D86 8), and the second circumferential channel (D6) are fixed in sequence, the valve seat is communicated with a pipe interface on the adjusting mechanism through a first circumferential channel (D7), a second circumferential channel, through holes in the first magnetic conduction block (D8) and the second magnetic conduction block (D10), the valve cover (D3) is connected with the valve seat (D5) through a welding or thread structure, and the valve cover (D3) is used for pressing the magnetic conduction cylinder (D2) and the coil (D4); the valve seat (D5) is communicated with a second oil port (b) on the damper body (A) through a second connecting oil pipe (C2), the adjusting mechanism (D1) is communicated with a first oil port (a) on the damper body (A) through a first connecting oil pipe (C1), and magnetorheological fluid (Z) in the damper body (A) is subjected to damping regulation through the external valve (D); the adjusting mechanism is similar to a pipe joint, is used for connecting an oil pipe and is made of a magnetic conductive material; the coil is arranged in the outer side, so that the wire arrangement is more convenient, the heat dissipation of the coil is facilitated, and the additional processing in the working cylinder barrel and on the surface can be avoided; the number of the circumferential channels can be flexibly increased and decreased by increasing and decreasing the number of the magnetic conduction blocks, so that differential configuration and wide matching in different fields are facilitated;
as shown in fig. 3, a step (T) is machined on the valve seat (D5), that is, an annular positioning groove is machined on the valve seat (D5), the magnetism isolating cylinder (D6) is coaxially positioned and matched with the valve seat (D5) through the step (T), and the magnetism conducting cylinder (D2) is aligned with the magnetism isolating cylinder (D6) and coaxially mounted; the structure ensures the mounting precision of the parts;
as shown in fig. 3, a third sealing ring (D11) is disposed on a side surface of the adjusting mechanism, and this structure is to prevent leakage of the magnetorheological fluid;
as shown in fig. 3, the valve seat (D5), the valve cover (D3), the first magnetic block (D8), the second magnetic block (D10), and the magnetic cylinder (D2) are made of magnetic materials;
as shown in fig. 4, the first circumferential channel (D7) and the second circumferential channel (D9) are fixed by interference or welding, and have the same structure, and comprise circular plates (D91), wherein the front and back surfaces of the circular plates are provided with annular grooves (D92), and the annular grooves on the two surfaces are communicated with each other through holes (D93) on the bottoms of the grooves; the groove bottom of the annular groove is made of a magnetic conductive material, and the annular wall of the annular groove is made of a magnetic isolation material; ensuring that most magnetic force lines vertically pass through the circumferential channel to form a loop, improving the utilization rate of a magnetic field and prolonging an effective damping channel;
as shown in fig. 1, the damper body (a) and the external valve (D) are connected into an integrated structure through a bracket (B); the integral type structure can prevent that oil pipe and external valve from easily appearing the problem that drops.
The working principle is as follows: as shown in fig. 5 and 6, the compression stage: magnetorheological fluid (Z) in a compression cavity (Y) in a working cylinder barrel (A7) sequentially passes through a second oil port (b), a second connecting oil pipe (C2) and a pipe joint on a valve seat to enter an external valve (D), the magnetorheological fluid (Z) flows in the external valve (D) in a single direction, after passing through a first circumferential channel (D7), the magnetorheological fluid is divided into two parts, after flowing in the circumferential direction, each part converges to a through hole on a first magnetic conduction block, enters a second circumferential channel (D9), is divided into two parts again, after flowing in the circumferential direction, each part converges to a through hole on a second magnetic conduction block, flows into a first connecting oil pipe (C1) through the pipe joint on an adjusting mechanism (D1), and finally flows into a recovery cavity (X); and in the recovery stage, magnetorheological fluid (Z) in the recovery cavity (X) flows into the compression cavity (Y) through the external valve (D), and the flowing direction of the magnetorheological fluid (Z) in the external valve (D) is opposite to that in the compression stage. Most of magnetic force lines (L) of the coil vertically penetrate through the first circumferential channel (D7) and the second circumferential channel (D9), and the circumferential flowing direction of the magnetorheological fluid (Z) in the first circumferential channel (D7) and the second circumferential channel (D9) is perpendicular to the magnetic force lines (L).
The present invention is not limited to the above-mentioned best mode, and any person can obtain the products of other forms under the teaching of the present invention, but no matter how its shape or structure is changed, all obtain the same or similar technical solution through changing the quantity and the shape of damping regulation circumferential channel, all fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an external valve formula double-rod magneto rheological damper based on multistage circumference flow pattern which characterized in that: the damper comprises a damper body (A), a first connecting oil pipe (C1), a second connecting oil pipe (C2) and an external valve (D), wherein a recovery cavity and a compression cavity of the damper body are communicated with the connecting oil pipe through the external valve; the damper body mainly comprises a lifting lug (A1), a piston rod (A2), a guide assembly (A4), a working cylinder barrel (A7) and a piston (A8); the piston rod (A2) can slide in the working cylinder barrel (A7) through the piston (A8), the piston rod is in sliding fit with a guide assembly coaxially fixed on the working cylinder barrel, the piston (A8) divides the working cylinder barrel (A7) into a recovery cavity (X) and a compression cavity (Y), magnetorheological fluid (Z) is additionally arranged in the recovery cavity (X) and the compression cavity (Y), and the lifting lug (A1) is fixed at the outer end of the piston rod (A2); the piston rod is composed of two rod bodies and is respectively connected with two ends of the piston.
2. The external valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 1, wherein: and a first oil seal (A3) and a second oil seal (A5) are respectively arranged on the front side and the back side of the guide assembly (A4).
3. The externally-arranged valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 1 or 2, wherein: and a first sealing ring (A6) is arranged on the side surface of the inner end of the guide assembly.
4. The external valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 3, wherein: and a second sealing ring (A9) is arranged on the side surface of the piston (A8).
5. The externally valved dual-rod magnetorheological damper based on the multi-stage circumferential flow mode according to claim 1, 2 or 4, wherein: and piston buffer pads (A10) are arranged on the front end face and the back end face of the piston (A8).
6. The external valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 5, wherein: the external valve (D) is composed of an adjusting mechanism (D1), a magnetic conduction cylinder (D2), a valve cover (D3), a coil (D4), a valve seat (D5), a magnetic isolation cylinder (D6), a first circumferential channel (D7), a first magnetic conduction block (D8), a second circumferential channel (D9) and a second magnetic conduction block (D10), the magnetic isolation cylinder (D6) is positioned in the valve seat (D5), the magnetic conduction cylinder (D2) and the magnetic isolation cylinder (D6) are combined into a hollow cylinder body, the coil (D4) is sleeved on the magnetic conduction cylinder (D2) and the magnetic isolation cylinder (D6), the adjusting mechanism (D1) is fixed in the upper end of the magnetic conduction cylinder (D2), the second magnetic conduction block (D2) is fixed in the lower end of the magnetic conduction cylinder (D2), the first circumferential channel (D2), the first magnetic conduction block (D2), the second circumferential channel (D2) is fixed in the magnetic isolation cylinder (D2) from bottom to top, and a first through hole (D2) is provided with a second through hole (2), the valve seat and the adjusting mechanism are communicated through holes in a first circumferential channel (D7), a second circumferential channel, a first magnetic conduction block (D8) and a second magnetic conduction block (D10), the valve cover (D3) is connected with the valve seat (D5), and the valve cover (D3) is used for pressing the magnetic conduction cylinder (D2) and the coil (D4); the valve seat (D5) is communicated with a second oil port (b) on the damper body (A) through a second connecting oil pipe (C2), the adjusting mechanism (D1) is communicated with a first oil port (a) on the damper body (A) through a first connecting oil pipe (C1), and magnetorheological fluid (Z) in the damper body (A) is subjected to damping regulation through the external valve (D); the valve seat (D5), the valve cover (D3), the first magnetic conduction block (D8), the second magnetic conduction block (D10) and the magnetic conduction cylinder (D2) are made of magnetic conduction materials.
7. The externally-arranged valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 6, wherein: the valve seat (D5) is provided with a step (T), the magnetism isolating cylinder (D6) is matched with the valve seat (D5) through the step (T) in a coaxial positioning manner, the magnetism conducting cylinder (D2) is aligned with the magnetism isolating cylinder (D6) and is coaxially mounted, and the magnetism conducting cylinder (D2) is coaxially matched with the adjusting mechanism (D1).
8. The externally-arranged valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 6 or 7, wherein: and a third sealing ring (D11) is arranged on the side surface of the adjusting mechanism.
9. The externally-arranged valve type double-rod magnetorheological damper based on the multi-stage circumferential flow mode as claimed in claim 8, wherein: the first circumferential channel (D7) and the second circumferential channel (D9) are identical in structure and comprise circular plates (D91), annular grooves (D92) are formed in the front and back surfaces of each circular plate, and the annular grooves in the two surfaces are communicated through holes (D93) in the bottoms of the grooves; the groove bottom of the annular groove is made of magnetic conductive materials, and the annular wall of the annular groove is made of magnetic isolation materials.
10. The externally valved dual-rod magnetorheological damper based on the multi-stage circumferential flow mode according to claim 6, 7 or 9, wherein: the damper body (A) and the external valve (D) are connected into an integral structure through a bracket (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922361714.6U CN211667076U (en) | 2019-12-25 | 2019-12-25 | External valve type double-rod magnetorheological damper based on multi-stage circumferential flow mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922361714.6U CN211667076U (en) | 2019-12-25 | 2019-12-25 | External valve type double-rod magnetorheological damper based on multi-stage circumferential flow mode |
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| Publication Number | Publication Date |
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| CN211667076U true CN211667076U (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922361714.6U Active CN211667076U (en) | 2019-12-25 | 2019-12-25 | External valve type double-rod magnetorheological damper based on multi-stage circumferential flow mode |
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| CN (1) | CN211667076U (en) |
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