Width-adjustable damping magnetorheological damper

Abstract

The damping magnetorheological damper comprises a damping cylinder, a damping piston is connected in the damping cylinder in a sliding mode, a damping rod is fixedly connected to the top of the damping piston, an oil seal head is arranged at one end of the damping cylinder, and one end of the damping rod penetrates through the oil seal head and is connected with the oil seal head in a sliding mode. A fixing ring is fixedly connected to one end of the damping rod, an annular plate is fixedly connected to the side wall of the outer ring of the damping rod, a magnetic conductive ring is fixedly connected to the side wall of the damping cylinder and communicates with the interior of the damping cylinder, an electromagnetic coil is arranged on the side wall of the outer ring of the magnetic conductive ring, and a protective shell is fixedly connected to the side wall of the outer ring of the damping cylinder. Through mutual cooperation of the protective shell, the exhaust pipe, the annular plate, the oil seal head and other components, the electromagnetic coil is installed outside the damping cylinder, compared with the interior of the damping cylinder, ventilation is better, and it is prevented that the electromagnetic coil is too hot to affect use of the damper.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorber technical field especially relates to a wide adjustable damping magnetorheological shock absorber. BACKGROUND

[0002] The magnetorheological shock absorber controls the magnetic field intensity by adjusting the current, and then changes the viscosity of the magnetorheological fluid to realize wide-range damping adjustment, has the advantages of millisecond-level response, continuous adjustable damping, low energy consumption, etc., and can significantly improve the system performance in the fields of automobiles, buildings, etc., but faces challenges such as material stability, sealing wear and cost, and needs to be promoted by technological innovation and process optimization for industrialization application.

[0003] For example, a magnetorheological shock absorber disclosed in Chinese patent publication No. CN211624061U includes an oil storage cylinder assembly with two open ends, a working cylinder body arranged inside the oil storage cylinder assembly, a piston valve assembly arranged inside the working cylinder body, a piston rod cooperatively connected with the piston valve assembly, a magnetorheological assembly arranged outside the oil storage cylinder assembly, a dust cover assembly arranged on the magnetorheological assembly, an upper support buffer block fixedly connected with the dust cover assembly, a lower support buffer block arranged outside the oil storage cylinder assembly, and an elastic member; one end of the elastic member is fixed in the upper support buffer block.

[0004] However, in the above-mentioned scheme, the electromagnetic coil generates a large amount of Joule heat under continuous work, which leads to a decrease in magnetic field strength and a decrease in damping force adjustment accuracy. The magnetorheological shock absorber has a compact structure and limited internal space, resulting in poor thermal stability. UTILITY MODEL CONTENTS

[0005] The utility model provides a wide adjustable damping magnetorheological shock absorber to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A wide adjustable damping magnetorheological shock absorber includes a shock absorbing cylinder, a shock absorbing piston slidably connected in the shock absorbing cylinder, a shock absorbing rod fixedly connected to the top of the shock absorbing piston, an oil seal head arranged at one end of the shock absorbing cylinder, the shock absorbing rod penetrating through the oil seal head and being slidably connected with the oil seal head, a fixed ring fixedly connected to one end of the shock absorbing rod, an annular plate fixedly connected to the outer ring sidewall of the shock absorbing rod, a magnetic conducting ring fixedly connected to the sidewall of the shock absorbing cylinder, the magnetic conducting ring being in communication with the inside of the shock absorbing cylinder, an electromagnetic coil arranged on the outer ring sidewall of the magnetic conducting ring, a protective shell fixedly connected to the outer ring sidewall of the shock absorbing cylinder, the electromagnetic coil being located in the protective shell, a ventilation structure arranged on the sidewall of the protective shell, a floating piston slidably connected in the shock absorbing cylinder, the floating piston being located at the bottom of the shock absorbing piston, an air valve arranged on the sidewall of the shock absorbing cylinder, the air valve being located at the bottom of the floating piston, and a fixed lug fixedly connected to the bottom of the shock absorbing cylinder.

[0008] As a further improvement of the technical solution: the ventilation structure includes two air exhaust pipes, both of which are fixedly connected to the top side wall of the protective shell and communicate with the inside of the protective shell, both of which are slidably connected with air exhaust pistons, both of which are fixedly connected with air exhaust rods at the top, and both of which are fixedly connected to the bottom side wall of the annular plate.

[0009] As a further improvement of the technical solution: both of the air exhaust pipes are made of heat-conducting material.

[0010] As a further improvement of the technical solution: the annular plate is fixedly connected with a damping spring at the bottom, which is fixedly connected to the top side wall of the oil seal head at the bottom, and the damping spring is located outside the damping rod.

[0011] As a further improvement of the technical solution: both of the ventilation openings are provided with dust screens.

[0012] Compared with the prior art, the device has the advantages that: through the cooperation of the protective shell, the air exhaust pipe, the annular plate, the oil seal head and other components, the electromagnetic coil is installed outside the damping cylinder, which is more breathable and ventilated than the inside of the damping cylinder, preventing the electromagnetic coil from overheating and affecting the use of the shock absorber.

[0013] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following is the preferred embodiment of the utility model and the detailed description of the drawings. The specific implementation of the utility model is given in detail by the following examples and their drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the utility model, which constitutes a part of this application, the schematic embodiment of the utility model and its description are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0015] Figure 1 A front view cross-sectional structure diagram of the adjustable width damping magnetic rheological shock absorber is provided for the utility model;

[0016] Figure 2 A front view structure diagram of the adjustable width damping magnetic rheological shock absorber is provided for the utility model;

[0017] Figure 3 A front view structure diagram of the adjustable width damping magnetic rheological shock absorber is provided for the utility model; Figure 1 A local enlarged structure diagram of A.

[0018] The components represented by the reference numbers in the drawings are listed as follows:

[0019] 1 shock absorber cylinder; 2 vent; 3 electromagnetic coil; 4 protective shell; 5 air extraction pipe; 6 air extraction rod; 7 annular plate; 8 shock absorber rod; 9 fixing ring; 10 shock absorber spring; 11 oil seal head; 12 shock absorber piston; 13 magnetic conducting ring; 14 floating piston; 15 valve; 16 fixing lug; 17 air extraction piston. DETAILED DESCRIPTION

[0020] The principles and features of the present application are described below in connection with the drawings, which are meant to be exemplary only and not limiting of the present application. The present application is described more particularly in connection with the following paragraphs and examples, with reference to the accompanying drawings in which:

[0021] It is to be noted that when an element or layer is referred to as being "on" another element or substrate, it can be directly on the other element or substrate or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element or substrate, there are no intervening elements present. It will be understood by those within the art that when an element is referred to as being "connected", it can be directly connected to other elements or intervening elements can be present. It will be understood by those within the art that when an element is referred to as being "supported by" another element it can be directly supported by that element or intervening elements can also be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0023] Reference will now be made to Figures 1-3The utility model discloses an adjustable width damping magnetorheological shock absorber, including shock attenuation cylinder 1, shock attenuation cylinder 1 inside slidingly connected has shock attenuation piston 12, shock attenuation piston 12 top fixedly connected has shock attenuation rod 8, shock attenuation cylinder 1 one end is equipped with oil seal head 11, shock attenuation rod 8 one end penetrates oil seal head 11 and with oil seal head 11 slidingly connected, shock attenuation rod 8 one end fixedly connected has fixed ring 9, shock attenuation rod 8 outer ring side wall fixedly connected has annular plate 7, shock attenuation cylinder 1 side wall fixedly connected has magnetically conductive ring 13, magnetically conductive ring 13 with shock attenuation cylinder 1 inside intercommunication, magnetically conductive ring 13 outer ring side wall is equipped with electromagnetic coil 3, shock attenuation cylinder 1 outer ring side wall fixedly connected has protection shell 4, electromagnetic coil 3 is located in protection shell 4, protection shell 4 side wall is equipped with ventilation structure, shock attenuation cylinder 1 inside slidingly connected has floating piston 14, floating piston 14 is located shock attenuation piston 12 bottom, shock attenuation cylinder 1 side wall is equipped with air valve 15, air valve 15 is located floating piston 14 bottom, shock attenuation cylinder 1 bottom fixedly connected has fixed lug 16.

[0024] Please refer to Figures 1-3 Ventilation structure includes two air suction pipes 5, two air suction pipes 5 all adopt heat conduction material setting, two air suction pipes 5 all are fixedly connected on the top side wall of protection shell 4, two air suction pipes 5 all with protection shell 4 inside intercommunication, two air suction pipes 5 all slidingly connected have air suction piston 17, two air suction pistons 17 top all fixedly connected have air suction rod 6, two air suction rods 6 top all fixedly connected on the bottom side wall of annular plate 7, protection shell 4 bottom is equipped with two air vents 2, two air vents 2 all are equipped with dust screen, shock attenuation rod 8 when moving will drive two air suction rods 6 through annular plate 7 and move simultaneously, two air suction rods 6 drive two air suction pistons 17 to move, through the back and forth movement of air suction piston 17, can suck the external gas into protection shell 4, then the gas in protection shell 4 is discharged through air vent 2, to improve the heat dissipation efficiency of electromagnetic coil 3 in protection shell 4.

[0025] Please refer to Figures 1-2 Annular plate 7 bottom fixedly connected have shock attenuation spring 10, shock attenuation spring 10 bottom fixedly connected on the top side wall of oil seal head 11, shock attenuation spring 10 is located shock attenuation rod 8 outer ring, can extrude shock attenuation spring 10 through annular plate 7 when shock attenuation rod 8 is stressed, to improve the damping effect of the shock absorber.

[0026] The working principle of the utility model is: the magnetorheological liquid in the damping cylinder 1 presents low viscosity Newton fluid characteristics under the condition that the electromagnetic coil 3 is not electrified, when the electromagnetic coil 3 is electrified to generate a magnetic field, the magnetic particles in the magnetorheological liquid arrange into chain structure along the magnetic induction line direction, which results in the instantaneous increase of the viscosity of the liquid, even presents solid-like characteristics, thereby controlling the current intensity of the electromagnetic coil 3, adjusting the magnetic field intensity, thereby continuously and steplessly changing the damping force, realizing the active control of vibration, when the damping rod 8 moves under the resistance, the damping piston 12 is driven to extrude the magnetorheological liquid in the damping cylinder 1, thereby realizing the damping effect, when the damping rod 8 moves, the two air extraction rods 6 are driven to move simultaneously through the annular plate 7, the two air extraction pistons 17 are driven to move through the two air extraction rods 6, through the back and forth movement of the air extraction piston 17, the external gas can be sucked into the protective shell 4, then the gas in the protective shell 4 is discharged through the ventilation opening 2, thereby improving the heat dissipation efficiency of the electromagnetic coil 3 in the protective shell 4, through installing the electromagnetic coil 3 outside the damping cylinder 1, the heat dissipation effect of the electromagnetic coil 3 can be greatly improved, compared with setting the electromagnetic coil 3 in the damping cylinder 1, the heat of the electromagnetic coil 3 is difficult to dissipate.

[0027] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form; the ordinary technical personnel in the industry can implement the utility model according to the above and the drawings; however, the equivalent changes of some changes, modifications and evolution of the above disclosed technical contents within the scope of the technical scheme of the utility model are the equivalent embodiments of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the utility model are still within the protection scope of the technical scheme of the utility model.

Claims

1. A tunable wideband damper magnetorheological shock absorber comprising a shock absorber tube (1), characterized in that, The shock-absorbing cylinder (1) is slidably connected with a shock-absorbing piston (12), the top of the shock-absorbing piston (12) is fixedly connected with a shock-absorbing rod (8), one end of the shock-absorbing cylinder (1) is provided with an oil seal head (11), one end of the shock-absorbing rod (8) penetrates through the oil seal head (11) and is slidably connected with the oil seal head (11), one end of the shock-absorbing rod (8) is fixedly connected with a fixed ring (9), the outer ring side wall of the shock-absorbing rod (8) is fixedly connected with an annular plate (7), the side wall of the shock-absorbing cylinder (1) is fixedly connected with a magnetic conducting ring (13), the magnetic conducting ring (13) is in communication with the inside of the shock-absorbing cylinder (1), the outer ring side wall of the magnetic conducting ring (13) is provided with an electromagnetic coil (3), the outer ring side wall of the shock-absorbing cylinder (1) is fixedly connected with a protective shell (4), the electromagnetic coil (3) is located in the protective shell (4), the side wall of the protective shell (4) is provided with a ventilation structure, the shock-absorbing cylinder (1) is slidably connected with a floating piston (14), the floating piston (14) is located at the bottom of the shock-absorbing piston (12), the side wall of the shock-absorbing cylinder (1) is provided with a valve nozzle (15), the valve nozzle (15) is located at the bottom of the floating piston (14), the bottom of the shock-absorbing cylinder (1) is fixedly connected with a fixed lug (16).

2. The adjustable wideband damping magneto-rheological shock absorber of claim 1, wherein, The ventilation structure comprises two air suction pipes (5), both the air suction pipes (5) are fixedly connected on the top side wall of the protective shell (4), both the air suction pipes (5) are in communication with the inside of the protective shell (4), both the air suction pipes (5) are slidably connected with air suction pistons (17), the top of both the air suction pistons (17) is fixedly connected with air suction rods (6), the top of both the air suction rods (6) is fixedly connected on the bottom side wall of the annular plate (7), the bottom of the protective shell (4) is provided with two ventilation openings (2).

3. The adjustable wideband damping magneto-rheological shock absorber according to claim 2, characterized in that, Both the air suction pipes (5) are made of heat-conducting material.

4. The adjustable wideband damper magnetorheological shock absorber of claim 1, wherein, The bottom of the annular plate (7) is fixedly connected with shock-absorbing springs (10), the bottom of the shock-absorbing springs (10) is fixedly connected on the top side wall of the oil seal head (11), the shock-absorbing springs (10) are located outside the shock-absorbing rod (8).

5. The adjustable wideband damper magnetorheological shock absorber of claim 2, wherein, Both the ventilation openings (2) are provided with dust screens.

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