Squeezing and flowing mixed type magnetorheological suspension

Abstract

The utility model aims at providing an extrusion and flow mixed type magnetorheological suspension. The extrusion and flow mixed type magnetorheological suspension comprises a shell, a rubber bottom die, a rubber spring, a connecting rod, a piston rod, a partition plate, an upper extrusion disc, a lower extrusion disc and an extrusion coil. A partition plate is arranged in the middle of the interior of the shell; the upper end of the connecting rod penetrates out of the top of the rubber spring, and the piston rod is installed at the lower end. The lower end of the piston rod penetrates through a piston rod hole in the center of the partition plate and extends into the space below the partition plate. The upper extrusion disc and the lower extrusion disc are respectively mounted on the piston rod and are positioned on the upper side and the lower side of the partition plate; the partition plate is provided with a flowing channel which is communicated with the upper cavity and the lower cavity in the shell; and extrusion coils are respectively arranged in the upper extrusion disc and the lower extrusion disc. According to the utility model, the influence of reciprocating vibration on vibration isolation can be well avoided, and the mutual interference between the extrusion area coil and the flow channel coil can be well reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetorheological fluid suspension technical field, concretely relates to a kind of extrusion and flow mixed type magnetorheological suspension. BACKGROUND

[0002] Automobile suspension is used to reduce and control the transmission of engine vibration, and plays the role of supporting automobile power assembly, is applied in current automobile industry, widely used suspension is divided into traditional pure glue suspension and hydraulic suspension with good dynamic and static performance.The performance of automobile suspension system directly affects the driving stability, comfort and fuel economy of automobile.Therefore, automobile manufacturers will fully consider various factors during design and manufacturing process to provide the best suspension system performance.

[0003] Magnetorheological suspension is to replace hydraulic oil in hydraulic suspension with magnetorheological fluid, adjust the magnetic field intensity by changing coil excitation current, and then change the fluid viscosity to adjust the suspension stiffness characteristics, so as to control the damping force of suspension output in a wide range.Compared with traditional rubber suspension and hydraulic suspension, the vibration isolation effect of magnetorheological suspension is better.

[0004] In the prior art, a hybrid operation mode structure using flow and extrusion operation modes is also appeared, which increases the adjustable range of damping force and improves the vibration isolation capacity of suspension.However, the vibration isolation effect of the current hybrid suspension on engine will be affected by reciprocating vibration.In addition, the extrusion area coil and flow channel coil are prone to mutual magnetic interference, which affects the vibration isolation effect. SUMMARY

[0005] The utility model aims at providing a kind of extrusion and flow mixed type magnetorheological suspension, the device structure design science, can better avoid the influence of reciprocating vibration on vibration isolation, and can better reduce the mutual interference between extrusion area coil and flow channel coil.

[0006] The extrusion and flow mixed type magnetorheological suspension includes a shell, a rubber bottom die, a rubber spring, a connecting rod, a piston rod, a partition plate, an upper extrusion disc, a lower extrusion disc and an extrusion coil.

[0007] The bottom of the shell is provided with a rubber bottom die, and the top of the shell is open, which is sealed by a rubber spring.The space between the rubber bottom die and the rubber spring in the shell is filled with magnetorheological fluid.

[0008] The inner middle part of the shell is provided with a partition plate, which divides the inner space of the shell into an upper chamber and a lower chamber; the upper end of the connecting rod passes through the top of the rubber spring, and the lower end is provided with a piston rod; the lower end of the piston rod passes through the piston rod hole in the center of the partition plate and extends into the space below the partition plate; the upper and lower extrusion discs are respectively arranged on the piston rod and located on the upper and lower sides of the partition plate; the partition plate is provided with flow channels for communicating the upper and lower chambers in the shell.

[0009] The upper and lower extrusion discs are respectively provided with extrusion coils.

[0010] The top of the rubber spring is provided with an inverted truncated cone-shaped groove, and an inverted truncated cone-shaped reinforcing block is arranged in the groove. The reinforcing block is fixedly connected with the rubber spring through a slotted countersunk screw, and a liquid injection port sealing ring is arranged on the slotted countersunk screw. The middle part of the connecting rod is fixedly connected with the screw hole in the center of the reinforcing block through thread cooperation.

[0011] The flow channels are arranged on the outer side of the partition plate and are uniformly arranged in 3-6 groups in the circumferential direction; the flow channels are circular arc-shaped channels corresponding to the curvature of their arrangement positions.

[0012] The partition plate is provided with a coil groove on the outer side of the flow channels, and a flow channel coil is arranged in the coil groove. The inner side opening of the coil groove is sealed with a magnetic ring I.

[0013] The middle part of the partition plate is provided with a magnetic separation disc; the center of the magnetic separation disc is provided with an inner hole flush with the piston rod hole, the piston rod passes through the magnetic separation disc from the inner hole, and the outer circular surface of the magnetic separation disc is located on the outer side of the upper and lower extrusion discs; the flow channels are located on the outer side of the outer circular surface of the magnetic separation disc.

[0014] The middle part of the piston rod is provided with a sliding column matched with the piston rod hole; the outer circular surface of the sliding column is provided with an annular groove, and a hydraulic sealing ring is arranged in the annular groove.

[0015] The diameter of the sliding column is greater than the diameter of the piston rod, and the upper part of the piston rod is connected with the connecting rod through thread cooperation; the upper extrusion disc is connected with the upper part of the piston rod through thread cooperation, and is locked by the connecting rod and the upper end of the sliding column;

[0016] The lower extrusion disc is connected with the lower part of the piston rod through thread cooperation, the lower end of the piston rod is provided with a fixing nut, and the lower extrusion disc is locked by the fixing nut and the lower end of the sliding column.

[0017] The partition plate is divided into an upper partition plate and a lower partition plate, and the upper partition plate and the lower partition plate are tightly connected by a plurality of bolts to form an integrated body.

[0018] The shell is divided into an upper shell and a lower shell, and the upper shell and the lower shell are fixedly installed in an integrated manner through a plurality of groups of bolts; the outer side edge of the bottom surface of the lower partition plate is provided with a ring body, the connecting joint of the upper shell and the lower shell is located on the ring body, and the outer walls of the ring bodies on the two sides of the connecting joint are respectively provided with sealing ring grooves, and sealing rings are arranged in the sealing ring grooves.

[0019] The shell and the connecting rod are made of non-magnetic conductive material.

[0020] The bottom surface of the upper extrusion disc and the top surface of the lower extrusion disc are respectively provided with extrusion coil grooves; extrusion coils are arranged in the extrusion coil grooves, and the extrusion coil grooves are sealed through the magnetic isolation ring II.

[0021] The working principle of the utility model is as follows:

[0022] The magnetic circuit of the utility model is composed of an extrusion area magnetic circuit and a flow channel magnetic circuit. The utility model forms a magnetic circuit of an upper and lower symmetrical extrusion mode through the upper extrusion disc and the lower extrusion disc. In the extrusion area, the upper extrusion disc and the lower extrusion disc each have an annular excitation coil, i.e. an extrusion coil. Figure 3 As shown in the figure, the magnetic lines of force bypass the excitation coil from the side of the extrusion disc away from the central hole, vertically pass through the extrusion gap from top to bottom, then reach the partition plate, and due to the existence of the magnetic isolation disc, the magnetic lines of force pass through the extrusion gap close to the central hole from outside to inside, and then return to the coil close to the central hole, forming a closed magnetic circuit. In addition, in order to prevent self-demagnetization caused by the interference of the magnetic circuits of the upper and lower extrusion plates, an aluminum magnetic isolation disc is installed in the middle of the partition plate.

[0023] The utility model is provided with more than one flow channel flow channel arranged on the outer side of the partition plate, and the number of flow channels is preferably 3-6. The flow channels are away from the central hole, so as to prevent the extrusion plate coil from interfering with the magnetic field of the flow channel coil. In the flow channel area, the annular excitation coil (flow channel coil) is installed in the coil groove after the upper and lower partition plates are spliced. The magnetic lines of force extend from the outer side of the upper partition plate to the lower partition plate, then vertically pass through the flow channel, then reach the upper partition plate from the inner side of the lower partition plate, then vertically pass through the flow channel again and return to the outside of the upper partition plate, forming a closed magnetic circuit.

[0024] The utility model has the following beneficial effects:

[0025] The structure design of the utility model is scientific, can better avoid the influence of reciprocating vibration on vibration isolation, and can better reduce the mutual interference between the extrusion area coil and the flow channel coil, and has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure diagram of the extrusion and flow mixing type magneto-rheological suspension of example 1.

[0027] Figure 2 Structure diagram of the partition plate of Example 1;

[0028] Figure 3 Magnetic force line direction diagram of the extrusion and flow mixed magnetorheological suspension of Example 1;

[0029] The numbers and names in the figure are as follows:

[0030] 1 - housing, 2 - rubber bottom die, 3 - rubber spring, 4 - connecting rod, 5 - piston rod, 6 - partition plate, 7 - upper extrusion disc, 8 - lower extrusion disc, 9 - piston rod hole, 10 - flow channel, 11 - reinforcing block, 12 - flow channel coil, 13 - magnetic isolation disc, 14 - sliding column, 15 - upper partition plate, 16 - lower partition plate, 17 - ring body, 18 - sealing ring, 20 - magnetic isolation ring I, 22 - extrusion coil, 23 - fixed nut, 24 - hydraulic sealing ring, 25 - upper housing, 26 - lower housing, 27 - slotted countersunk screw, 28 - liquid injection port sealing ring. DETAILED DESCRIPTION

[0031] The utility model will be explained in detail below in combination with the drawings and examples. Example 1

[0032] As shown in Figure 1 and 2 , the extrusion and flow mixed magnetorheological suspension comprises a housing 1, a rubber bottom die 2, a rubber spring 3, a connecting rod 4, a piston rod 5, a partition plate 6, an upper extrusion disc 7, a lower extrusion disc 8, and an extrusion coil 22; the housing 1 and the connecting rod 4 are made of non-magnetic material;

[0033] The bottom of the housing 1 is provided with the rubber bottom die 2, and the top of the housing 1 is open, which is blocked by the rubber spring 3, and the space between the rubber bottom die 2 and the rubber spring 3 in the housing 1 is filled with magnetorheological fluid;

[0034] The middle part of the housing 1 is provided with the partition plate 6, which divides the internal space of the housing 1 into an upper chamber and a lower chamber; the upper end of the connecting rod 4 passes out from the top of the rubber spring 3, and the lower end is provided with the piston rod 5; the top of the rubber spring 3 is provided with a rounded trapezoidal groove, and a rounded trapezoidal reinforcing block 11 is arranged in the groove, the reinforcing block 11 is fixedly connected with the rubber spring 3 through the slotted countersunk screw 27, and the slotted countersunk screw 27 is provided with the liquid injection port sealing ring 28; the middle part of the connecting rod 4 is fixedly connected with the screw hole at the center of the reinforcing block 11 through thread cooperation.

[0035] The lower end of the piston rod 5 extends into the space below the partition plate 6 through the piston rod hole 9 in the center of the partition plate 6; the upper extrusion disc 7 and the lower extrusion disc 8 are respectively installed on the piston rod 5 and located on the upper and lower sides of the partition plate 6; the partition plate 6 is provided with flow channels 10 which communicate with the upper and lower chambers in the casing 1; the flow channels 10 are arranged on the outer side of the partition plate 6 and are evenly arranged in four groups in the circumferential direction; the flow channels 10 are circular arc channels corresponding to the arc of the arrangement position.

[0036] The partition plate 6 is provided with a coil groove on the outer side of the flow channels 10, and the flow channel coil 12 is arranged in the coil groove; the inner side opening of the coil groove is sealed by the magnetic isolation ring I 20.

[0037] The middle part of the partition plate 6 is provided with a magnetic isolation disc 13; the center of the magnetic isolation disc 13 is provided with an inner hole which is flush with the piston rod hole 9, the piston rod 5 passes through the magnetic isolation disc 13 from the inner hole, and the outer circular surface of the magnetic isolation disc 13 is located on the outer side of the upper extrusion disc 7 and the lower extrusion disc 8; the flow channels 10 are located on the outer side of the outer circular surface of the magnetic isolation disc 13.

[0038] The middle part of the piston rod 5 is provided with a sliding column 14 which is in clearance fit with the piston rod hole 9; the outer circular surface of the sliding column 14 is provided with an annular groove, and the hydraulic sealing ring 24 is arranged in the annular groove.

[0039] The diameter of the sliding column 14 is greater than the diameter of the piston rod 5, and the upper part of the piston rod 5 is connected with the connecting rod 4 through threaded fit; the upper extrusion disc 7 is connected with the upper part of the piston rod 5 through threaded fit, and is locked by the connecting rod 4 and the upper end of the sliding column 14.

[0040] The lower extrusion disc 8 is connected with the lower part of the piston rod 5 through threaded fit, and the lower end of the piston rod 5 is provided with a fixing nut 23, and the lower extrusion disc 8 is locked by the fixing nut 23 and the lower end of the sliding column 14.

[0041] The upper extrusion disc 7 and the lower extrusion disc 8 are respectively provided with extrusion coils 22.

[0042] The partition plate 6 is divided into an upper partition plate 15 and a lower partition plate 16, and the upper partition plate 15 and the lower partition plate 16 are tightly connected into an integral body by a plurality of bolts.

[0043] The casing 1 is divided into an upper casing 25 and a lower casing 26, and the upper casing 25 and the lower casing 26 are fixedly installed into an integral body by a plurality of bolts; the outer side edge of the bottom surface of the lower partition plate 16 is provided with a ring body 17, the joint seam of the upper casing 25 and the lower casing 26 is located on the ring body 17, and the outer walls of the ring bodies 17 on the two sides of the joint seam are respectively provided with sealing ring grooves, and the sealing rings 18 are arranged in the sealing ring grooves.

[0044] The bottom surface of the upper extrusion disc 7 and the top surface of the lower extrusion disc 8 are respectively provided with extrusion coil grooves; extrusion coils 22 are arranged in the extrusion coil grooves, and the extrusion coil grooves are sealed by the magnetic isolation ring II.

Claims

1. A squeeze and flow mixed magneto-rheological suspension, comprising a shell (1), a rubber bottom die (2), a rubber spring (3), a connecting rod (4), a piston rod (5), a partition plate (6), an upper squeeze disc (7), a lower squeeze disc (8), and a squeeze coil (22); characterized in that: the bottom of the shell (1) is provided with the rubber bottom die (2), the top of the shell (1) is provided with an opening, the opening is blocked by the rubber spring (3), and the space between the rubber bottom die (2) and the rubber spring (3) in the shell (1) is filled with magneto-rheological fluid; the middle of the shell (1) is provided with the partition plate (6), the partition plate (6) divides the space in the shell (1) into an upper chamber and a lower chamber, the upper end of the connecting rod (4) passes through the top of the rubber spring (3), the lower end of the connecting rod (4) is provided with the piston rod (5), the lower end of the piston rod (5) passes through the piston rod hole (9) in the center of the partition plate (6) and extends into the space below the partition plate (6), the upper squeeze disc (7) and the lower squeeze disc (8) are arranged on the piston rod (5) and located on the upper and lower sides of the partition plate (6), respectively, and the partition plate (6) is provided with a flow channel (10) for communicating the upper and lower chambers in the shell (1); the upper squeeze disc (7) and the lower squeeze disc (8) are respectively provided with the squeeze coil (22). The top of the rubber spring (3) is provided with a reverse circular truncated cone groove, a reverse circular truncated cone reinforcing block (11) is arranged in the reverse circular truncated cone groove, the reinforcing block (11) is fixedly connected with the rubber spring (3) through a slotted countersunk screw (27), a liquid injection port sealing ring (28) is arranged on the slotted countersunk screw (27), and the middle of the connecting rod (4) is fixedly connected with a threaded hole in the center of the reinforcing block (11) through thread cooperation.

2. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein: The flow channel (10) is arranged on the outer side of the partition plate (6) and is uniformly arranged in 3-6 groups in the circumferential direction, and the flow channel (10) is a circular arc channel corresponding to the curvature of the arrangement position.

3. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein: The partition plate (6) is provided with a coil groove on the outer side of the flow channel (10), the coil groove is provided with a flow channel coil (12), and the inner side opening of the coil groove is sealed with a magnetic separation ring I (20).

4. The squeeze and flow hybrid magnetorheological suspension of claim 3, wherein: The middle of the partition plate (6) is provided with a magnetic separation disc (13), the center of the magnetic separation disc (13) is provided with an inner hole flush with the piston rod hole (9), the piston rod (5) passes through the magnetic separation disc (13) from the inner hole, the outer circular surface of the magnetic separation disc (13) is located on the outer side of the upper squeeze disc (7) and the lower squeeze disc (8), and the flow channel (10) is located on the outer side of the outer circular surface of the magnetic separation disc (13).

5. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein: The middle of the piston rod (5) is provided with a sliding column (14) in gap cooperation with the piston rod hole (9), and the outer circular surface of the sliding column (14) is provided with an annular groove, and a hydraulic sealing ring (24) is arranged in the annular groove.

6. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein:

7. The squeeze and flow mixed magneto-rheological suspension according to claim 6, characterized in that: ​ The diameter of the slide column (14) is greater than the diameter of the piston rod (5), the upper part of the piston rod (5) is connected with the connecting rod (4) through thread cooperation; the upper extrusion disc (7) is connected with the upper part of the piston rod (5) through thread cooperation, and is locked by the connecting rod (4) and the upper end of the slide column (14) together. The lower extrusion disc (8) is connected with the lower part of the piston rod (5) through thread cooperation, the lower end of the piston rod (5) is provided with a fixing nut (23), and the lower extrusion disc (8) is locked by the fixing nut (23) and the lower end of the slide column (14).

8. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein: The partition plate (6) is divided into an upper partition plate (15) and a lower partition plate (16), the upper partition plate (15) and the lower partition plate (16) are fastened and connected into an integrated whole through a plurality of bolts; the shell (1) is divided into an upper shell (25) and a lower shell (26), the upper shell (25) and the lower shell (26) are fixedly installed into an integrated whole through a plurality of bolts; the bottom surface outer side edge of the lower partition plate (16) is provided with a ring body (17), the connecting joint of the upper shell (25) and the lower shell (26) is located on the ring body (17), and the outer walls of the ring bodies (17) on the two sides of the connecting joint are respectively provided with sealing ring grooves, and sealing rings (18) are arranged in the sealing ring grooves.

9. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein: The shell (1) and the connecting rod (4) are made of non-magnetic conductive material.

10. The squeeze and flow hybrid magnetorheological suspension of claim 1, wherein: The bottom surface of the upper extrusion disc (7) and the top surface of the lower extrusion disc (8) are respectively provided with extrusion coil grooves; extrusion coils (22) are arranged in the extrusion coil grooves, and the extrusion coil grooves are sealed through the magnetic separation ring II.

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