CN109372936B

CN109372936B - Double-cylinder high-pressure magneto-rheological damper

Info

Publication number: CN109372936B
Application number: CN201811371197.4A
Authority: CN
Inventors: 刘山平; 刘力; 屈贤
Original assignee: Yueqing Haichuang Intelligent Technology Co Ltd
Current assignee: Zeifu Automotive Parts System (Shanghai) Co.,Ltd.
Priority date: 2018-11-18
Filing date: 2018-11-18
Publication date: 2020-05-12
Anticipated expiration: 2038-11-18
Also published as: CN109372936A

Abstract

The invention discloses a double-cylinder high-pressure magnetorheological damper, which comprises a working cylinder, wherein the bottom end of the working cylinder is provided with a lower mounting ring through welding, the inner wall of the working cylinder is provided with an oil storage chamber, a through hole is formed between the bottom end of the working cylinder and the bottom end of the oil storage chamber, a piston assembly is arranged in the working cylinder, both ends of the outer side of the working cylinder are sleeved with mounting seats through glue, and the middle part of the outer side of the working cylinder is sleeved with a rubber sleeve through glue. Can realize adjusting the hardness of bumper shock absorber for the suitability of bumper shock absorber is stronger, and the shock attenuation effect is better.

Description

Double-cylinder high-pressure magneto-rheological damper

Technical Field

The invention relates to the technical field of shock absorbers, in particular to a double-cylinder high-pressure magnetorheological shock absorber.

Background

The magneto-rheological shock absorber utilizes electromagnetic reaction, takes input information from a sensor for monitoring the motion of a vehicle body and wheels as a basis, and makes real-time response to road conditions and driving environment, the magneto-rheological liquid is magnetic soft particle suspension, when an electromagnetic coil arranged in a shock absorber piston is electrified, the magnetic field of the coil changes the rheological property of the magneto-rheological liquid, so that under the conditions of no electromechanical control valve and simple mechanical device, the magneto-rheological shock absorber generates damping force with quick response and strong controllability, has the characteristics of high damping force adjustable multiple, easy realization of computer variable damping real-time control, compact structure and small external input energy, and is increasingly paid high attention to in the engineering field.

However, the magnetorheological damper has the following disadvantages when in use: when the electromagnetic damper is used, when the current amount in the electromagnetic coil is small and a large magnetic field cannot be generated to influence magnetorheological fluid, the damping effect of the damper is reduced, and under the condition of large vibration, the damper cannot be used for damping, so that the vehicle jolts greatly and the riding experience is influenced; in addition, when the shock absorber is used, the outer side of the limiting pipe is stained with dust, so that the phenomenon of blocking occurs in the shock absorption process, and the shock absorption cannot be carried out; when the shock absorber is placed, the shock absorber can be directly contacted with the ground, the shock absorber can be damaged, and the normal use of the shock absorber is influenced; when the shock absorber works, the shock absorber can do reciprocating piston motion, and can generate larger heat, so that the service life of the shock absorber is influenced.

Disclosure of Invention

The invention provides a double-cylinder high-pressure magnetorheological damper which can effectively solve the technical problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a double-cylinder high-pressure magnetorheological damper comprises a working cylinder, wherein a lower mounting ring is installed at the bottom end of the working cylinder through welding, an oil storage chamber is formed in the inner wall of the working cylinder, a through hole is formed between the bottom end of the working cylinder and the bottom end of the oil storage chamber, and a bottom valve seat is installed at the bottom end of the inner part of the working cylinder through welding;

working cylinder internally mounted has piston assembly, piston assembly includes piston, sealing rubber ring, solenoid, water conservancy diversion hole, adjustment tank, elasticity bag and regulation hole, sealing rubber ring is installed in the embedding of piston outside, be connected through the block between sealing rubber ring and the working cylinder inner wall, solenoid is installed in the embedding of the inside limit portion of piston, water conservancy diversion hole has been seted up to piston middle part outside equidistance, the adjustment tank has been seted up to water conservancy diversion hole one side bottom, the elastic bag of adjustment tank inner wall laminating, the adjustment hole has been seted up between water conservancy diversion hole and the adjustment tank, piston top middle part welding has the piston rod.

Preferably, the seat of laying is all cup jointed through glue at working cylinder outside both ends, the rubber sleeve is cup jointed through glue in the middle part of the working cylinder outside, rubber sleeve outside equidistance leaves the chisel and has anti-skidding line.

Preferably, the semiconductor refrigeration piece is installed on the inner side of the rubber sleeve through a fixing screw.

Preferably, reserve damper assembly is installed to piston rod one end, reserve damper assembly includes spacing pipe, spacing dish, first damping spring and second damping spring, the welding of piston rod one end has spacing dish, spacing dish has cup jointed spacing pipe in the outside, first damping spring is installed on spacing dish top, second damping spring is installed to spacing dish bottom.

Preferably, the collar is installed through the welding to spacing pipe top, lubricating component is installed to the working cylinder top, lubricating component includes lubricated seat, lubricated cavity, oil absorption sponge ring, oil seepage hole and oil inlet, pass through welded connection between working cylinder and the lubricated seat, lubricated cavity has been seted up to lubricated seat inside, the oil seepage hole has been seted up to lubricated cavity inboard, the laminating of oil seepage hole one side has the oil absorption sponge ring, the oil inlet has been seted up to lubricated seat top, semiconductor refrigeration piece and solenoid's input all with the output electric connection of power.

Preferably, the limiting disc and the first damping spring and the limiting disc and the second damping spring are fixedly connected through spring fixing seats.

Preferably, the working cylinder is filled with magnetorheological fluid.

Preferably, the outer diameter of the limiting disc is equal to the inner diameter of the limiting pipe.

Preferably, the outer diameter of the sealing rubber ring is equal to the inner diameter of the working cylinder.

Preferably, the damping force of the first and second damping springs is greater than the damping force of the magnetorheological fluid under the condition of the magnetic field.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. be provided with piston assembly, get into the adjustment tank inside through magnetorheological suspensions, cause the extrusion to the elasticity bag, make the elasticity bag get into water conservancy diversion downthehole portion through the adjustment hole extrusion, can adjust the size in water conservancy diversion hole, can improve the shock attenuation effect of bumper shock absorber effectively, can be according to the vibrations size and the range size of piston motion of the vehicle in-process of actually traveling, adjust the water conservancy diversion hole, can realize adjusting the hardness of bumper shock absorber, make the suitability of bumper shock absorber stronger, the shock attenuation effect is better.

2. Be provided with lubricating assembly, absorb the inside lubricating oil of lubricated cavity through oil absorption sponge ring to paint in spacing tub outside through the oil impregnate hole, when spacing pipe is piston motion inside the working cylinder, can prevent effectively that spacing tub of surperficial frictional force from too big leading to appearing the card pause phenomenon, make the bumper shock absorber more smooth and easy at the in-process that uses, make the vehicle more stable at the in-process that uses, improve the travelling comfort by bus.

3. Be provided with reserve shock attenuation subassembly, the vehicle is at the in-process of traveling, and when the vibrations pressure that produces was greater than the damping force of magnetorheological suspensions in the magnetic field, through first damping spring and second damping spring, can carry out the secondary shock attenuation to the vehicle, avoided vibrations pressure too big, when magnetorheological suspensions can't carry out the shock attenuation to the vehicle, lead to the vehicle to jolt seriously, prolonged the life of bumper shock absorber.

4. Be provided with the rubber sleeve, anti-skidding line and lay the seat, through rubber sleeve and anti-skidding line, when carrying the bumper shock absorber, can prevent effectively that bumper shock absorber surface friction is less, lead to the bumper shock absorber to take place to drop and damage, simultaneously, more comfortable when carrying the bumper shock absorber winter, through laying the seat, can avoid placing the bumper shock absorber effectively, the bumper shock absorber directly takes place to contact with ground, lead to the bumper shock absorber to receive to collide with and damage.

5. Be provided with the semiconductor refrigeration piece, through the low temperature that the semiconductor refrigeration piece produced, dispel the heat that produces in the bumper shock absorber working process, prevent that the inside heat of bumper shock absorber from too high leading to the phenomenon that the bumper shock absorber appears bursting, prolonged the life of bumper shock absorber.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the construction of the interior of the cylinder of the present invention;

FIG. 3 is a schematic view of the mounting structure of the alternate shock assembly of the present invention;

FIG. 4 is a schematic view of the mounting arrangement of the piston assembly of the present invention;

FIG. 5 is a schematic structural view of the lubrication assembly of the present invention;

FIG. 6 is a schematic view of the installation structure of the semiconductor cooling plate of the present invention;

reference numbers in the figures: 1. a working cylinder; 2. a lower mounting ring; 3. an oil storage chamber; 4. a through hole; 5. a base valve seat; 6. a placing seat; 7. a rubber sleeve; 8. a semiconductor refrigeration sheet; 9. anti-skid lines; 10. a piston assembly; 1001. a piston; 1002. sealing the rubber ring; 1003. an electromagnetic coil; 1004. a flow guide hole; 1005. an adjustment groove; 1006. an elastic bag; 1007. an adjustment hole; 11. a piston rod; 12. a standby shock-absorbing component; 1201. a limiting pipe; 1202. a limiting disc; 1203. a first damping spring; 1204. a second damping spring; 13. an upper mounting ring; 14. a lubrication assembly; 1401. a lubrication seat; 1402. a lubrication chamber; 1403. an oil absorbing sponge ring; 1404. an oil-bleeding hole; 1405. and an oil inlet.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-6, the double-cylinder high-pressure magnetorheological damper provided by this embodiment comprises a working cylinder 1, in order to damp vibration generated during a vehicle running process through characteristics of the magnetorheological fluid, the working cylinder 1 is filled with the magnetorheological fluid, a lower mounting ring 2 is installed at a bottom end of the working cylinder 1 through welding, an oil storage chamber 3 is formed in an inner wall of the working cylinder 1, a through hole 4 is formed between a bottom end of the working cylinder 1 and a bottom end of the oil storage chamber 3, a bottom valve seat 5 is installed at a bottom end of the working cylinder 1 through welding, in order to prevent a slip phenomenon during a carrying and mounting process of the damper, the damper is more comfortable and cannot be frozen in winter when being mounted and dismounted, mounting seats 6 are installed at two ends of an outer side of the working cylinder 1 through glue sockets, a rubber sleeve 7 is installed at a middle part of the outer side of the working cylinder 1 through glue sockets, anti-slip veins 9 are, in order to reduce the heat generated by friction during the operation of the shock absorber and prolong the service life of the shock absorber, the semiconductor refrigerating sheet 8 is installed on the inner side of the rubber sleeve 7 through a fixing screw, and the model of the semiconductor refrigerating sheet 8 is TEC-12705.

1 internally mounted of working cylinder has piston assembly 10, piston assembly 10 includes piston 1001, sealing rubber ring 1002, solenoid 1003, water conservancy diversion hole 1004, adjustment tank 1005, elasticity bag 1006 and regulation hole 1007, sealing rubber ring 1002 is installed in the embedding of piston 1001 outside, be connected through the block between sealing rubber ring 1002 and the working cylinder 1 inner wall, solenoid 1003 is installed in the embedding of the inside limit portion of piston 1001, water conservancy diversion hole 1004 has been seted up to piston 1001 middle part outside equidistance, adjustment tank 1005 has been seted up to water conservancy diversion hole 1004 one side bottom, the flexible bag 1006 of the laminating of adjustment tank 1005 inner wall, adjustment hole 1007 has been seted up between water conservancy diversion hole 1004 and the adjustment tank 1005, piston 1001 top mid-weld has piston rod 11.

When the vibration pressure is too large and the magnetorheological fluid cannot absorb the generated vibration, a good damping effect can be achieved through the spare damping assembly 12, the spare damping assembly 12 is installed at one end of the piston rod 11, the spare damping assembly 12 comprises a limiting pipe 1201, a limiting disc 1202, a first damping spring 1203 and a second damping spring 1204, the limiting disc 1202 is welded at one end of the piston rod 11, in order to prevent the piston rod 11 from moving left and right inside the limiting pipe 1201 and causing damage of the damper, the outer diameter of the limiting disc 1202 is equal to the inner diameter of the limiting pipe 1201, the limiting pipe 1201 is sleeved outside the limiting disc 1202, in order to enable the limiting pipe 1201 to move up and down inside the working cylinder 1 and prevent the damper from being damaged due to left and right displacement, the outer diameter of the sealing rubber ring 1002 is equal to the inner diameter of the working cylinder 1, the first damping spring 1203 is installed at the top end of the limiting disc 1202, the second damping spring 1204 is, in order to enable the fixed connection between the limiting disc 1202 and the first damping spring 1203 and between the limiting disc 1202 and the second damping spring 1204 to be more stable, the fixed connection between the limiting disc 1202 and the first damping spring 1203 and the fixed connection between the limiting disc 1202 and the second damping spring 1204 are both fixed through spring fixing seats, when the damping force of the magnetorheological fluid cannot absorb the vibration in the driving process of the automobile, the vibration generated in the driving process of the automobile can be absorbed through the first damping spring 1203 and the second damping spring 1204, and the damping force of the first damping spring 1203 and the second damping spring 1204 is larger than the damping force of the magnetorheological fluid under the magnetic field condition.

In order to lubricate limiting pipe 1201, prevent the phenomenon that the card pause appears in the in-process of piston 1001 motion, influence the normal shock attenuation effect of bumper shock absorber, installing ring 13 on limiting pipe 1201 top is installed through the welding, lubricating component 14 is installed on working cylinder 1 top, lubricating component 14 includes lubricating seat 1401, lubricating chamber 1402, oil absorption sponge ring 1403, oil seepage hole 1404 and oil inlet 1405, pass through welded connection between working cylinder 1 and the lubricating seat 1401, lubricating chamber 1402 has been seted up to lubricating seat 1401 inside, oil seepage hole 1404 has been seted up to lubricating chamber 1402 inboard, oil absorption sponge ring 1403 has been laminated to oil seepage hole 1404 one side, oil inlet 1405 has been seted up to lubricating seat 1401 top, the input of semiconductor refrigeration piece 8 and solenoid 1003 all with the output electric connection of power.

The working principle and the use flow of the shock absorber are as follows: in the process of using the double-cylinder high-pressure magnetorheological damper, firstly, the magnetorheological damper needs to be installed, in the installation process, the upper installation ring 13 is connected with an automobile chassis, the lower installation ring 2 is connected with an automobile tire, so that the vibration generated in the driving process of the automobile can be reduced through the magnetorheological damper, when the magnetorheological damper works, the vibration generated by the automobile can prompt the inside of the electromagnetic coil 1003 to be electrified, a magnetic field is generated near the electromagnetic coil 1003, the magnetorheological fluid can present low fluidity under the action of the magnetic field, the piston 1001 can move in the working cylinder 1 to reciprocate up and down, the vibration generated in the driving process of the automobile is eliminated, in the installation process of the magnetorheological damper, the rubber sleeve 7 and the anti-slip threads 9 are held by hands, so that the surface friction of the damper can be effectively prevented from being small, and the damper can be prevented from falling off and being damaged, meanwhile, the shock absorber is more comfortable to install in winter, the mounting base 6 can effectively prevent the shock absorber from being damaged due to collision when the shock absorber is placed, magnetorheological fluid in the working cylinder 1 can penetrate through the piston 1001 through the flow guide hole 1004 and enter into another cavity in the working process of the magnetorheological shock absorber, at the moment, the magnetorheological fluid can also enter into the adjusting groove 1005 and fill the elastic bag 1006 in the adjusting groove 1005, the elastic bag 1006 can deform after being filled with the magnetorheological fluid, so that the elastic bag 1006 filled with the magnetorheological fluid enters into the flow guide hole 1004 through the adjusting hole 1007 to adjust the diameter of the flow guide hole 1004, the magnetorheological shock absorber can adjust the flow guide hole 1004 according to the vibration pressure of a vehicle in the working process, and the damping effect of the magnetorheological shock absorber is better, the applicability is stronger, when the vibration pressure generated by the automobile in the driving process is larger than the damping force of the magnetorheological fluid under the action of a magnetic field, so that the vibration generated by the automobile cannot be damped, the piston rod 11 drives the limiting disc 1202 to do up-and-down reciprocating motion in the limiting tube 1201, the vibration generated in the driving process of the automobile is damped secondarily through the first damping spring 1203 and the second damping spring 1204, the damping effect of the magnetorheological damper is improved, when the friction force on the surface of the limiting tube 1201 is increased due to the long-time up-and-down reciprocating motion of the magnetorheological damper, so that the normal work is influenced, the lubricating oil in the lubricating chamber 1402 is absorbed through the oil absorption sponge ring 1403 and is coated on the surface of the limiting tube 1201 through the oil penetration hole 1404, the friction force on the surface of the limiting tube 1201 is reduced, the up-and-down reciprocating motion of the magnetorheological damper is smoother, so that the, when the inside lubricating oil of lubricated cavity 1402 runs out, through oil inlet 1405 to inside lubricating oil that adds of lubricated seat 1401 can, at the in-process of magnetic current change bumper shock absorber work, because continuous friction, can produce great heat, at this moment, produce low temperature through semiconductor refrigeration piece 8, and inside conducting to working cylinder 1 through working cylinder 1, cool down the heat that 1 inside produced of working cylinder, prevent that the inside heat of bumper shock absorber from too high phenomenon that leads to the bumper shock absorber to appear bursting, the life of bumper shock absorber has been prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The double-cylinder high-pressure magnetorheological damper comprises a working cylinder (1), wherein a lower mounting ring (2) is installed at the bottom end of the working cylinder (1) through welding, and the double-cylinder high-pressure magnetorheological damper is characterized in that: an oil storage chamber (3) is formed in the inner wall of the working cylinder (1), a through hole (4) is formed between the bottom end of the working cylinder (1) and the bottom end of the oil storage chamber (3), and a bottom valve seat (5) is installed at the bottom end of the interior of the working cylinder (1) in a welding mode;

a piston assembly (10) is arranged in the working cylinder (1), the piston assembly (10) comprises a piston (1001), a sealing rubber ring (1002), an electromagnetic coil (1003), a flow guide hole (1004), an adjusting groove (1005), an elastic bag (1006) and an adjusting hole (1007), a sealing rubber ring (1002) is embedded and installed on the outer side of the piston (1001), the sealing rubber ring (1002) is connected with the inner wall of the working cylinder (1) through clamping, an electromagnetic coil (1003) is embedded in the edge of the interior of the piston (1001), flow guide holes (1004) are formed in the outer side of the middle of the piston (1001) at equal intervals, the bottom end of one side of the diversion hole (1004) is provided with an adjusting groove (1005), the inner wall of the adjusting groove (1005) is adhered with an elastic bag (1006), an adjusting hole (1007) is formed between the diversion hole (1004) and the adjusting groove (1005), and a piston rod (11) is welded in the middle of the top end of the piston (1001);

reserve damper (12) are installed to piston rod (11) one end, reserve damper (12) are including spacing pipe (1201), spacing dish (1202), first damping spring (1203) and second damping spring (1204), the welding of piston rod (11) one end has spacing dish (1202), spacing dish (1202) outside has cup jointed spacing pipe (1201), first damping spring (1203) are installed on spacing dish (1202) top, second damping spring (1204) are installed to spacing dish (1202) bottom.

2. The dual tube high pressure magnetorheological damper of claim 1, wherein: working cylinder (1) outside both ends all cup joint through glue and install and lay seat (6), working cylinder (1) outside middle part cup joints through glue and installs rubber sleeve (7), rubber sleeve (7) outside equidistance leaves the chisel and has anti-skidding line (9).

3. The dual tube high pressure magnetorheological damper of claim 2, wherein: and the inner side of the rubber sleeve (7) is provided with a semiconductor refrigerating sheet (8) through a fixing screw.

4. The dual tube high pressure magnetorheological damper of claim 3, wherein: installing ring (13) on spacing pipe (1201) top is installed through the welding, lubricated subassembly (14) are installed on working cylinder (1) top, lubricated subassembly (14) are including lubricated seat (1401), lubrication chamber (1402), oil absorption sponge ring (1403), oil seepage hole (1404) and oil inlet (1405), pass through welded connection between working cylinder (1) and lubricated seat (1401), lubrication chamber (1402) have been seted up to lubricated seat (1401) inside, oil seepage hole (1404) have been seted up to lubrication chamber (1402) inboard, oil seepage hole (1404) one side laminating has oil absorption sponge ring (1403), oil inlet (1405) have been seted up on lubricated seat (1401) top, the input of semiconductor refrigeration piece (8) and solenoid (1003) all with the output electric connection of power.

5. The dual tube high pressure magnetorheological damper of claim 4, wherein: the limiting disc (1202) is fixedly connected with the first damping spring (1203) and the limiting disc (1202) is fixedly connected with the second damping spring (1204) through spring fixing seats.

6. The dual tube high pressure magnetorheological damper of claim 4, wherein: magnetorheological fluid is filled in the working cylinder (1).

7. The dual tube high pressure magnetorheological damper of claim 4, wherein: the outer diameter of the limiting disc (1202) is equal to the inner diameter of the limiting pipe (1201).

8. The dual tube high pressure magnetorheological damper of claim 4, wherein: the outer diameter of the sealing rubber ring (1002) is equal to the inner diameter of the working cylinder (1).

9. The dual tube high pressure magnetorheological damper of claim 4, wherein: the damping force of the first damping spring (1203) and the second damping spring (1204) is larger than the damping force of the magnetorheological fluid under the condition of a magnetic field.