Built-in valve type magnetorheological damper with adjustable channel

Abstract

The utility model discloses a built-in valve type magnetorheological damper with an adjustable channel, which comprises a cylinder body, the cylinder body is of a hollow cylinder structure, the left end of the cylinder body is sealed by an end cover, the end cover is fixed on the cylinder body by a screw, an O-shaped sealing ring II is arranged at a sealing groove of the inner side of the cylinder body and the end cover, a through hole is formed in the center of the end cover, and a piston rod is arranged in the through hole. The piston rod is of a hollow columnar structure, an O-shaped sealing ring III is arranged at the position of an end cover through hole and a sealing groove of the piston rod, and the right side of the piston rod is connected with a piston head upper end cover. A direct flow channel is opened or closed by rotating a shifting piece connecting rod 7, so that the number of liquid flow channels is changed, namely, the zero field damping force is changed, and the damping adjustable range is enlarged. Compared with a traditional magneto-rheological damper, the magneto-rheological damper has the advantages that the damping adjustable range can be effectively enlarged, meanwhile, the zero-field damping force can be changed, and the damping performance of the magneto-rheological damper is more excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of active electromagnetic induction suspension, in particular to a channel-adjustable built-in valve-type magnetorheological shock absorber. Background Art

[0002] The magnetorheological fluid used inside the electromagnetic induction suspension shock absorber is a new type of intelligent material. When there is no external magnetic field, the magnetorheological fluid behaves in a fluid state. When a magnetic field is applied, the magnetorheological fluid can be converted into a viscoelastic solid within milliseconds, and the whole process is reversible, controllable and rapid. The electromagnetic induction suspension shock absorber uses this characteristic of magnetorheological fluid to achieve semi-active vibration reduction.

[0003] However, the maximum damping force of ordinary magnetorheological dampers is small and the adjustable range of damping force is limited, and the zero-field damping force is immutable, which will affect its vibration reduction performance. Therefore, the adjustable damping range and zero-field damping force of magnetorheological dampers are important indicators for measuring magnetorheological dampers. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a channel-adjustable built-in valve magnetorheological damper, which solves the problems of the existing magnetorheological damper having an unadjustable damping range and an unchangeable zero-field damping force.

[0005] A channel-adjustable built-in valve magnetorheological shock absorber comprises a cylinder body, which is a hollow cylindrical structure. The left end of the cylinder body is capped with an end cover, which is fixed to the cylinder body with screws. An O-ring II is arranged at the sealing groove between the inner side of the cylinder body and the end cover. A through hole is arranged at the center of the end cover, in which a piston rod is arranged. The piston rod is a hollow cylindrical structure. An O-ring III is arranged at the sealing groove between the end cover through hole and the piston rod. A piston head end cover is connected to the right side of the piston rod, a piston head outer sleeve is arranged on the right side of the piston head end cover, a piston head lower end cover is arranged at the other end of the piston head outer sleeve, a paddle connecting rod is arranged on the inner side of the piston head outer sleeve, a winding frame is arranged on the paddle connecting rod, and coils I and II are wound on the winding frame.

[0006] Furthermore, a floating piston is arranged on the right side of the lower end cover of the piston head, an O-ring I is arranged on the contact surface between the floating piston and the cylinder body, and a nitrogen compensation part is arranged between the right side of the floating piston and the bottom of the cylinder body.

[0007] Furthermore, a wire hole is arranged inside the piston rod.

[0008] Furthermore, the interlayer between the piston rod and the cylinder body is filled with magnetorheological fluid.

[0009] Furthermore, the top of the paddle connecting rod is a circular flat plate, long connecting rods are symmetrically and vertically arranged at both ends of the flat plate, a circular through hole is opened at the center of the circular flat plate, and four circular holes are evenly arranged outside the circular through hole.

[0010] Furthermore, the upper end cover of the piston head is a circular flat plate structure, a circular through hole is arranged at the center of the structure, and arc-shaped through holes are evenly distributed on the outside of the through hole; the lower end cover of the piston head is a circular flat plate structure, a circular through hole is arranged at the center of the structure, and arc-shaped through holes are evenly distributed on the outside of the through hole.

[0011] Furthermore, the method also includes filling the gap between the inner side of the cylinder body and the piston rod with magnetorheological fluid.

[0012] Furthermore, the winding frame and the outer sleeve of the piston head form an annular channel, and four direct current channels are opened inside the winding frame.

[0013] Beneficial effects of the utility model: The present application opens or closes the DC channel by rotating the paddle connecting rod 7, thereby changing the number of liquid flow channels, that is, changing the zero-field damping force and increasing the adjustable damping range. Compared with the traditional magnetorheological damper, the utility model can effectively increase the adjustable damping range and change the zero-field damping force, making the damping performance of the magnetorheological damper more superior. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a channel-adjustable built-in valve-type magnetorheological shock absorber;

[0015] Figure 2 It is a cross-sectional view of a paddle connecting rod of a channel-adjustable internal valve-type magnetorheological shock absorber;

[0016] Figure 3 It is a schematic diagram of the structure of the end cover on the piston head of a channel-adjustable built-in valve-type magnetorheological shock absorber;

[0017] Figure 4 This is a schematic diagram of the structure of the lower end cover of the piston head of a magnetorheological shock absorber with an adjustable channel and a built-in valve.

[0018] Figure 5 The cross-sectional view of a winding frame of a channel-adjustable built-in valve-type magnetorheological shock absorber.

[0019] In the figure: 1-piston rod, 2-end cover, 3-screw, 4-cylinder body, 5-wire hole, 6-piston head upper end cover, 7-paddle connecting rod, 8-coil I, 9-winding rack, 10-piston head lower end cover, 11-floating piston, 12-nitrogen compensation part, 13-O-type sealing ring I, 14-coil II, 15-piston head outer sleeve, 16-magnetorheological fluid, 17-O-type sealing ring II, 18-O-type sealing ring III. DETAILED DESCRIPTION

[0020] The following is an explanation of the implementation of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to the implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inner”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] In this embodiment, as shown in the attached Figure 1-5As shown, a channel-adjustable built-in valve magnetorheological shock absorber includes a cylinder body 4, which is a hollow cylindrical structure. The left end of the cylinder body 4 is capped with an end cover 2, and the end cover 2 is fixed to the cylinder body 4 with screws 3. An O-ring II 17 is arranged at the sealing groove between the inner side of the cylinder body 4 and the end cover 2. The center of the end cover 2 is a through hole, and a piston rod 1 is arranged in the through hole. The piston rod 1 is a hollow cylindrical structure, and an O-ring III 18 is arranged at the sealing groove between the through hole of the end cover 2 and the piston rod 1. The right side of the piston rod 1 is connected with a piston head end cover 6, and a piston head outer sleeve 15 is arranged on the right side of the piston head end cover 6. The other end of the piston head outer sleeve 15 is provided with a piston head lower end cover 10, and a paddle connecting rod 7 is arranged on the inner side of the piston head outer sleeve 15. A winding frame 9 is arranged on the paddle connecting rod 7, and a coil I8 and a coil II 14 are wound on the winding frame 9.

[0024] Furthermore, a floating piston 11 is arranged on the right side of the piston head lower end cover 10, an O-ring Ⅰ13 is arranged on the contact surface between the floating piston 11 and the cylinder body 4, and a nitrogen compensation part 12 is arranged between the right side of the floating piston 11 and the bottom of the cylinder body 4.

[0025] Furthermore, a wire hole 5 is provided inside the piston rod 1 .

[0026] Furthermore, the interlayer between the piston rod 1 and the cylinder body 4 is filled with magnetorheological fluid 16 .

[0027] Furthermore, the top of the paddle connecting rod 7 is a circular flat plate, long connecting rods are symmetrically and vertically arranged at both ends of the flat plate, a circular through hole is opened at the center of the circular flat plate, and four circular holes are evenly arranged outside the circular through hole.

[0028] Furthermore, the upper end cover 6 of the piston head is a circular flat plate structure, a circular through hole is arranged at the center of the structure, and arc-shaped through holes are evenly distributed on the outside of the through hole; the lower end cover 10 of the piston head is a circular flat plate structure, a circular through hole is arranged at the center of the structure, and arc-shaped through holes are evenly distributed on the outside of the through hole.

[0029] Furthermore, the gap between the inner side of the cylinder body 4 and the piston rod 1 is filled with magnetorheological fluid 19 .

[0030] Furthermore, the winding frame 9 and the piston head outer sleeve 15 form an annular channel, and four direct current channels are opened inside the winding frame 9.

[0031] The specific workflow of this application is as follows:

[0032] During operation, the paddle connecting rod 7 can be rotated to open or close the DC channel. When the paddle hole is aligned with the DC channel, the DC channel is open, and the piston rod 1 is compressed downward to drive the piston head to move. At this time, the magnetorheological fluid 16 passes through the lower end cover 10 of the piston head and flows through the outer annular channel of the coil II 14 and the inner DC channel, and then passes through the annular and DC channels around the coil I8, and finally the magnetorheological fluid flows out from the upper end cover 6 of the piston head. When the paddle hole and the DC channel are completely staggered, the DC channel is closed, and the piston rod 1 is compressed downward to drive the piston head to move. At this time, the magnetorheological fluid 16 passes through the lower end cover 10 of the piston head and flows through the outer annular channel of the coil II 14, and then passes through the annular channel around the coil I8, and finally the magnetorheological fluid flows out from the upper end cover 6 of the piston head. In the whole process, the number of working channels can be changed by rotating the paddle connecting rod 7, that is, the zero-field damping force and the adjustable damping range can be changed; the magnetic field size can be changed by changing the current size of the coil I8 and the coil II 14, thereby adjusting the damping force size.

[0033] Beneficial effects of the utility model: The present application opens or closes the DC channel by rotating the paddle connecting rod 7, thereby changing the number of liquid flow channels, that is, changing the zero-field damping force and increasing the adjustable damping range. Compared with the traditional magnetorheological damper, the utility model can effectively increase the adjustable damping range and change the zero-field damping force, making the damping performance of the magnetorheological damper more superior.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A channel-adjustable built-in valve magnetorheological damper, characterized in that: The invention comprises a cylinder body (4), the cylinder body (4) is a hollow columnar structure, the left end of the cylinder body (4) is capped by an end cover (2), the end cover (2) is fixed to the cylinder body (4) by screws (3), an O-ring II (17) is arranged at the sealing groove between the inner side of the cylinder body (4) and the end cover (2), a through hole is arranged at the center of the end cover (2), a piston rod (1) is arranged in the through hole, the piston rod (1) is a hollow columnar structure, and a through hole is arranged at the sealing groove between the end cover (2) and the piston rod (1). An O-ring III (18) is provided, the right side of the piston rod (1) is connected to a piston head upper end cover (6), a piston head outer sleeve (15) is provided on the right side of the piston head upper end cover (6), a piston head lower end cover (10) is provided at the other end of the piston head outer sleeve (15), a paddle connecting rod (7) is provided inside the piston head outer sleeve (15), a winding frame (9) is provided on the paddle connecting rod (7), and a coil I (8) and a coil II (14) are wound on the winding frame (9).

2. The channel-adjustable internal valve type magnetorheological damper according to claim 1, characterized in that: The invention also includes a floating piston (11) disposed on the right side of the piston head lower end cover (10), an O-ring I (13) disposed on the contact surface between the floating piston (11) and the cylinder body (4), and a nitrogen compensation portion (12) disposed between the right side of the floating piston (11) and the bottom of the cylinder body (4).

3. The channel-adjustable internal valve type magnetorheological damper according to claim 2, characterized in that: The piston rod (1) is also provided with a wire passing hole (5) inside.

4. The channel-adjustable internal valve type magnetorheological damper according to claim 2, characterized in that: The interlayer between the piston rod (1) and the cylinder body (4) is filled with magnetorheological fluid (16).

5. The channel-adjustable internal valve type magnetorheological damper according to claim 2, characterized in that: The top of the paddle connecting rod (7) is a circular flat plate, and long connecting rods are symmetrically and vertically arranged at both ends of the flat plate. A circular through hole is opened at the center of the circular flat plate, and four circular holes are evenly arranged outside the circular through hole.

6. The channel-adjustable internal valve type magnetorheological damper according to claim 2, characterized in that: The piston head upper end cover (6) is a circular flat plate structure, a circular through hole is provided at the center of the structure, and arc-shaped through holes are evenly distributed outside the through hole; the piston head lower end cover (10) is a circular flat plate structure, a circular through hole is provided at the center of the structure, and arc-shaped through holes are evenly distributed outside the through hole.

7. The channel-adjustable internal valve type magnetorheological damper according to claim 1, characterized in that: The method also includes filling a gap between the inner side of the cylinder body (4) and the piston rod (1) with a magnetorheological fluid (19).

8. The channel-adjustable internal valve type magnetorheological damper according to claim 1, characterized in that: The winding frame (9) and the piston head outer sleeve (15) form an annular channel, and four direct current channels are opened inside the winding frame (9).

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