CN201166029Y - A Magneto-rheological Valve with Helical Liquid Flow Channel - Google Patents

Abstract

A magneto-rheological valve with a spiral liquid flow channel, which mainly solves the problem that in the magneto-rheological valve, the magneto-rheological fluid flows non-linearly along the liquid flow channel, lengthens the path length of the electromagnetic-rheological fluid flow, improves the utilization rate of the magnetic force line, and Under the condition that the size of the magnetic gap remains unchanged, the controllable fluid pressure difference of the electromagnetic rheological fluid under the same current intensity is increased, so as to achieve the purpose of saving energy and reducing the size of the magnetorheological valve. The scheme adopted is that a non-linear liquid flow channel is provided on the corresponding end faces of the positioning disk and the guide disk. The utility model has the advantages that the magnetorheological valve has a simple structure, is convenient to manufacture and install, does not increase the volume of the magnetorheological valve, and expands the control range of the magnetorheological valve.

Description

A Magneto-rheological Valve with Helical Liquid Flow Channel

Technical field

The utility model relates to a hydraulic control valve, in particular to a magneto-rheological valve with a spiral liquid flow channel designed to improve the magneto-rheological fluid channel in a magneto-rheological hydraulic control valve.

Background technique

Compared with traditional hydraulic control valves, magnetorheological valves control the flow of magnetorheological fluid through the valve by controlling the magnitude of the excitation coil current. There are no moving mechanical parts. Compared with traditional mechanical valves, magnetic flow The variable fluid control valve has the advantages of simple structure, small size, easy control, fast response, low working noise, wear resistance, high reliability, and low cost. Magneto-rheological valves are now widely used.

The hydraulic control range of magneto-rheological valves has its own limitations. One is that the flow direction of the magnetorheological fluid in the magnetic gap space must be perpendicular to the direction of the magnetic field; the second is the flow channel of the magnetorheological fluid in the magnetic gap space. Under the premise of given dimensions, energy consumption, response time and given magnetorheological fluid, the high pressure difference can be obtained through the following ways: one is to place the magnetorheological fluid in the In the magnetic gap space where the magnetic field intensity is the largest and not greater than the magnetic saturation intensity of the magnetorheological fluid, the magnetorheological effect is maximized; the second is to increase the flow channel length of the magnetorheological fluid in the magnetic gap space. In actual design, due to the limited space of the magnetic gap, it is very difficult to realize the above two ways at the same time.

How to increase the pressure difference of the magnetorheological valve and expand the hydraulic control range of the magnetorheological valve is a technical problem to be solved urgently in this industry.

In order to solve the above-mentioned technical problems, the Chinese patent discloses a plurality of magnetorheological fluid damping devices (such as damping pistons, damping cylinders, damping coils and damping passages controlled by damping coils) in the passages of magnetorheological fluids in magnetorheological valves. etc.), as the Chinese patent discloses a magneto-rheological valve structure, which forms a disc-shaped liquid flow resistance channel between the magnetic disc and the end face, and between the outer ring surface of the magnetic disc and the cylinder. An annular liquid flow resistance channel is formed, which communicates with the central hole inside the moistening core through the disc-shaped liquid flow resistance channel to form a complete liquid flow channel. Although such a structure can be provided with two or more groups to meet the pressure and flow requirements, such a structure does not make full use of the coil magnetic field, and will increase the volume of the valve, increasing the difficulty of assembling the magneto-rheological valve and the failure rate.

Contents of the invention

In order to overcome in the prior art, the damping device of the magnetorheological fluid provided to increase the resistance of the magnetorheological fluid channel in the magnetorheological valve has a complex structure, increases the volume of the magnetorheological valve, and increases the failure rate of the magnetorheological valve. Insufficient technology, the utility model proposes a magneto-rheological valve structure of a spiral liquid flow channel, so that the magneto-rheological fluid flows non-linearly along the liquid flow channel, thus lengthening the path length of the electromagnetic rheological fluid flow and improving the resistance to the limited magnetic field lines. Under the condition of constant magnetic gap size, the controllable fluid pressure difference of electromagnetic rheological fluid can be increased under the same current intensity, so as to achieve the purpose of saving energy and reducing the size of magnetorheological valve.

The technical solution adopted by the utility model to achieve the purpose of the invention is that a magneto-rheological valve with a spiral liquid flow channel includes: a valve body, a coil bracket, an excitation coil, a positioning disk and a guide disk, and the excitation coil is wound on the coil bracket. The disk is arranged at both ends of the coil support, the positioning disk and the guide disk are installed on the same axis, and a liquid flow channel is formed between the corresponding end faces of the positioning disk and the guide disk, and a set of The arc-shaped stopper forms a helical liquid flow channel on the end face of the positioning disc.

A group of pins are arranged on the corresponding end faces of the positioning disk and the guide disk, and the arc stopper is connected with the end surface of the positioning disk through the pins. The arc-shaped block is made of magnetic-isolation metal material, and the curvature of the arc on the arc-shaped block corresponds to the curvature of the helical liquid flow channel. The positioning plate is provided with a group of diversion holes on the circumference whose diameter is larger than that of the arc-shaped stopper.

The beneficial effect of the utility model is that the magnetorheological valve has a simple structure, is convenient to manufacture and install, does not increase the volume of the magnetorheological valve, and expands the control range of the magnetorheological valve. The structure of the present invention places the magnetorheological fluid in the magnetic gap space where the magnetic field intensity is large and not greater than the magnetic saturation intensity of the magnetorheological fluid, so that the generated magnetorheological effect is maximized; at the same time, in the limited magnetic gap space, the The length of the flow channel of the magnetorheological fluid; while making full use of the limited magnetic gathering section in the magnetic field, the magnetic isolation pressure ring can be used to further gather magnetism; under the same magnetorheological fluid and flow requirements, the same size requirements, and the same response time Under the premise of the same energy consumption requirements, the pressure difference of the magnetorheological fluid can be significantly increased.

Below in conjunction with accompanying drawing, the utility model is described in detail.

Accompanying drawing 1 is a schematic cross-sectional view of the structure of the utility model.

Accompanying drawing 2 is the schematic diagram of the spiral liquid flow channel formed by the connection of the positioning plate and the arc stopper.

Accompanying drawing 3 is the schematic diagram of arc stopper.

In the accompanying drawings, 1 positioning disc, 2 guide disk, 3 arc stopper, 4 pin, 5 diversion hole, 8 valve body, 9 coil support, 10 excitation coil.

Detailed ways

Referring to accompanying drawings 1, 2 and 3, a magneto-rheological valve with a spiral non-linear liquid flow channel includes: a valve body 8, a coil support 9, an excitation coil 10, a positioning disk 1 and a guide disk 2, and the excitation The coil 10 is wound on the coil support 9, the guide disc 2 is arranged at both ends of the coil support 9, the positioning disc 1 and the guide disc 2 are coaxially installed, and a liquid flow channel is formed between the corresponding end faces of the positioning disc 1 and the guide disc 2, A set of arc-shaped stoppers 3 are arranged on the corresponding end surfaces of the positioning disc 1 and the guide disc 2 , and the arc-shaped stoppers 3 form a helical liquid flow channel on the end surface of the positioning disc 1 .

A group of arc-shaped stoppers 3 form a spiral liquid flow channel on the corresponding end faces of the positioning plate 1 and the guide plate 2, which increases the path length of the flow of the electromagnetic rheological fluid and improves the utilization rate of the limited magnetic force lines. Under variable conditions, the size of the controllable fluid pressure difference of the electromagnetic rheological fluid under the same current intensity is increased, so as to achieve the purpose of saving energy and reducing the size of the magnetorheological valve.

In order to facilitate the connection between the arc-shaped block 3 and the positioning plate 1 and according to different design requirements, the liquid flow channel is changed by replacing the arc-shaped block 3 with different curvatures. On the corresponding end faces of the positioning plate 1 and the guiding plate 2, a set of The pin 4 and the arc stopper 3 are connected with the end face of the positioning disc 1 through the pin 4 . The curvature of the arc on the arc-shaped block 3 corresponds to the curvature of the helical liquid flow channel.

According to the flow requirement of the magneto-rheological valve, a group of guide holes 5 are set on the positioning plate 1 on the circumference whose diameter is larger than that of the arc stopper 3 . By changing the number of guide holes 5, the flow rate requirement of the magneto-rheological valve is met.

When in use, the direction indicated by the arrow in Figure 1, the magnetorheological fluid enters the magnetorheological valve from port C, passes through the diversion hole 5 on the positioning plate 1, and enters the helical fluid flow channel formed by a group of arc-shaped stoppers 3. The central hole of the magnetic disk 2 and the coil support 9 passes through the liquid flow channel of the same structure at the other end of the magneto-rheological valve, and the magnetorheological fluid flows out from the D port.

Claims (4)

1. A magneto-rheological valve with a spiral liquid flow channel, comprising: a valve body, a coil bracket, an excitation coil, a positioning disc and a guide disc, the excitation coil is wound on the coil support, the guide disc is arranged at both ends of the coil support, and the positioning disc It is installed on the same axis as the guide disk, and a liquid flow channel is formed between the corresponding end faces of the positioning disk and the guide disk. It is characterized in that: a set of arc The arc-shaped block (3) forms a helical liquid flow channel on the end face of the positioning plate (1). 2. A magneto-rheological valve with a spiral liquid flow channel according to claim 1, characterized in that: a group of pins (4) are arranged on the corresponding end faces of the positioning plate (1) and the guiding plate (2) , the arc stopper (3) is connected with the end face of the positioning plate (1) through the pin (4). 3. The magneto-rheological valve with a helical liquid flow channel according to claim 1, characterized in that: the curvature of the arc on the arc stopper (3) corresponds to the curvature of the helical liquid flow channel. 4. A magneto-rheological valve with a spiral liquid flow channel according to claim 1 or 2, characterized in that: the positioning disc (1) is set on a circumference whose diameter is larger than that of the arc stopper (3). A set of diversion holes (5).

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