CN210769971U

CN210769971U - Magnetic shock-absorbing buffer

Info

Publication number: CN210769971U
Application number: CN201920779311.0U
Authority: CN
Inventors: 李振坤; 廖科程; 段仁杰; 黄尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-06-16
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a magnetism shock attenuation buffer, which comprises a sleeve, set up in the fixing base at sleeve both ends, set up the sealed swell in the sleeve, and set up the permanent magnet of arranging in proper order along telescopic center pin in the swell, adjacent permanent magnet opposite face polarity is the same, be provided with the piston rod that can follow sleeve axis direction and remove on the fixing base, piston rod one end extend in the sleeve and with swell in be close to the permanent magnet actuation of tip, swell periphery is equipped with the lantern ring to corresponding permanent magnet position circumference cover, sleeve inner wall axial is provided with the recess, be provided with the plush copper with recess sliding fit on the lantern ring. The utility model discloses utilize the repulsion force that like nature permanent magnet distance produced more closely to form a repulsion and alleviate external pressure more greatly, the buffer power that the pressure difference that airtight space produced formed between the adjacent permanent magnet of cooperation assists permanent magnet homopolar repulsion buffering external pressure, compares in the shock attenuation buffer of traditional fluid pressure type and spring, does not need external acting, and the use ageing is longer, and mechanical wear is littleer.

Description

Magnetic shock-absorbing buffer

Technical Field

The utility model relates to a damping device technical field, concretely relates to magnetism shock attenuation buffer.

Background

The use of shock attenuation buffer can all be involved in the mechanical equipment use at present, and current shock attenuation buffer majority is spring shock attenuation buffer and fluid pressure type shock attenuation buffer, and these two kinds of shock attenuation buffers are respectively through the elastic deformation who uses mechanical metal nature and utilize more energy to reach the effect of buffering shock attenuation, and there is mechanical wear big when using these two kinds of shock attenuation buffers, and usable ageing is not long, shortcomings such as high energy consumption and inefficiency.

Disclosure of Invention

In order to fill the blank of the prior art, the utility model provides a magnetism shock attenuation buffer.

The utility model provides a magnetism shock attenuation buffer, includes the sleeve, set up in the fixing base at sleeve both ends, set up in swell in the sleeve and set up in follow in the swell telescopic center pin permanent magnet that arranges in proper order, the permanent magnet is provided with two at least, and adjacent permanent magnet opposite face polarity is the same, be filled with the protection gas in the swell, the fixing base includes the base and sets up and to follow on the base the piston rod that sleeve axis direction removed, the base with sleeve end connection is fixed, piston rod one end extends in the sleeve and with the permanent magnet that is close to the tip in the swell is fixed, the swell corresponds outward permanent magnet department cover is equipped with the lantern ring, be provided with the plush copper on the lantern ring, sleeve inner wall axial is provided with the recess, the plush copper with recess sliding fit.

As an improvement of the scheme, the base comprises a hollow disk and a guide hollow cylinder which is integrally formed with the hollow disk, and the guide hollow cylinder and the hollow disk are equal in diameter and axially stretched.

As an improvement of the above scheme, sleeve tip opening inner wall both sides are provided with the breach respectively, breach one side is followed the arc recess has been seted up to the sleeve inner wall, the correspondence of direction hollow cylinder both sides is provided with the lug, the lug passes through the breach gets into rotatable card is gone into behind the sleeve inner wall in the arc recess, the base passes through the lug realize with sleeve tip's connection is fixed.

As an improvement of the scheme, the inner wall of the sleeve is provided with at least two longitudinal grooves, and raised heads are correspondingly arranged on the circumferential direction of the lantern ring to be matched with the grooves.

As an improvement of the scheme, the bulge is arranged in a sealing mode, and the interior of the bulge is a closed space filled with the protective gas.

As an improvement of the scheme, the bulge is a TPU material bulge.

As a modification of the above, the shielding gas is a rare gas.

As an improvement of the scheme, the end face of the permanent magnet is provided with a protective pad.

As an improvement of the scheme, the protective pad is an ACF artificial cartilage foam buffer pad.

As an improvement of the scheme, the sleeve is a carbon fiber composite sleeve.

The utility model has the advantages that: the utility model discloses utilize the principle that like poles of permanent magnet repel each other, repulsion force that produces more closely at like poles permanent magnet distance forms a repulsion and alleviates the pressure that the external world gave more greatly thereby reduces the direct contact strength of contact object, do not need the external world to do work in comparison with traditional fluid pressure type shock attenuation buffer, its use prescription is longer compared with traditional spring type shock attenuation buffer, mechanical wear is littleer, and the permanent magnet that vertically sets up in the sleeve forms closed structure through lantern ring cooperation swell, when receiving external pressure to lead to the permanent magnet longitudinal movement, the compression and the tensile pressure difference that form of airtight space between the adjacent permanent magnet, airtight space grow pressure reduces and apart from grow repulsion force between the adjacent permanent magnet reduces when tensile, the strength that pressure difference produced has a compressed strength to oppress strength in coordination with the external world and prevents the permanent magnet slippage, airtight space increases simultaneously when compressing, distance between the adjacent permanent magnet diminishes repulsion force and increases, the force generated by the pressure difference is matched with the repulsive force between homopolar permanent magnets, so that the end faces of the adjacent permanent magnets can be prevented from being in rigid contact, and a tensile force can be formed to reduce the external pressure, so that the effect of damping and buffering is achieved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic view of a partial structure of the sleeve of the present invention;

FIG. 3 is a schematic view of the base structure of the present invention;

fig. 4 is a schematic view of the structure of the collar of the present invention.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention will be described in detail with reference to the embodiments.

The present invention relates to a magnetic shock absorber, and the preferred embodiments of the present invention will be described in further detail below.

As shown in fig. 1 to 4, a magnetic shock-absorbing buffer comprises a sleeve 10, fixing seats 20 disposed at two ends of the sleeve 10, bulges 30 disposed in the sleeve 10, and permanent magnets 40 disposed in the bulges 30 and sequentially arranged along a central axis of the sleeve 10, wherein at least two permanent magnets 40 are disposed, the number of the permanent magnets 40 can be properly increased according to an external pressure to be damped, so as to increase homopolar repulsion force, opposite faces of adjacent permanent magnets 40 have the same polarity, so that the permanent magnets 40 longitudinally disposed in the bulges 30 can be spaced apart due to the repulsion of the homopolar magnets, a certain space exists between the adjacent permanent magnets 40 due to the repulsion force, the bulges 30 are sealed closed spaces filled with a shielding gas to form a vacuum, the fixing seats 20 comprise a base 21 and a piston rod 22 disposed on the base 21 and capable of moving along an axial direction of the sleeve 10, the base 21 is fixedly connected with the end of the sleeve 10, one end of the piston rod 22 extends into the sleeve 10 and is fixed with the end face of the permanent magnet 40 at the top or the bottom in the bulge 30, preferably, the diameter of the permanent magnet 40 is larger than that of the piston rod 22, so that the piston rod 22 can be fixed without separation through the suction of the permanent magnet 40, a lantern ring 50 is sleeved on the periphery of the bulge 30 corresponding to the permanent magnet 40 in the circumferential direction, the lantern ring 50 is arranged between the sleeve 10 and the bulge 30, the lantern ring 50 hoops the periphery of the bulge corresponding to the periphery of the permanent magnet 40, namely, the lantern ring 50 hoops the permanent magnet 40 through the bulge 30, meanwhile, the permanent magnet 40 is a solid magnet, preferably, the permanent magnet 40 is a round solid magnet, so that a plurality of relatively closed spaces are formed between the adjacent permanent magnets 40, the collar 50 is provided with a raised head 51, the inner wall of the sleeve 10 is longitudinally provided with a groove 11, and the raised head 51 is in sliding fit with the groove 11, so that the collar 50 can move along the groove 11, namely, a certain compression and expansion space is formed in a relatively closed space separated by the bulge 30. When external pressure acts on the piston rod 22 at one end of the sleeve 10, because the piston rod 22 at the other end of the sleeve 10 is fixed on the ground or other fixed surfaces, the piston rods 22 at the two ends of the sleeve 10 both move longitudinally under the action of the pressure, thereby pushing the permanent magnets 40 attracted with the piston rods 22 to move longitudinally, so that the distance between the adjacent permanent magnets 40 inside the bulge 30 is shortened, the balance state between the adjacent permanent magnets 40 is broken, the repulsive force between the adjacent permanent magnets 40 is increased, the direction of the repulsive force is opposite to the direction of the external pressure and is resisted by the external pressure, and the purpose of shock absorption and buffering is achieved, and because the bulge 30 is internally provided with a sealed space, when the adjacent permanent magnets 40 move longitudinally inside the bulge 30, the space between the adjacent permanent magnets 40 is a closed space due to the pinching effect of the lantern ring 50 on the bulge, and the sealed space between the adjacent permanent magnets 40 is, the direction of the force generated by the pressure difference is opposite to the direction of the external pressure, and the homopolar repulsion force of the auxiliary permanent magnet 40 resists the external pressure, so that the aim of shock absorption and buffering is fulfilled. The lantern ring 50 is tightly sleeved on the permanent magnets 40, the lantern ring 50 is provided with a raised head 51, the inner wall of the sleeve 10 is longitudinally provided with a groove 11, the size of the groove 11 is slightly larger than that of the raised head 51, so that the raised head 51 is in sliding fit with the groove 11, the lantern ring 50 can flexibly slide on the inner wall of the sleeve 10, most of pressure energy provided by repulsion between adjacent permanent magnets 40 and change of the closed space volume of the bulge 30 is converted into buffering force to be offset with external pressure, and the purpose of shock absorption and buffering is achieved, and meanwhile, the possibility of overturning, deflection and large-amplitude distortion caused by too large repulsion of the lantern ring 50 is avoided due to the matching of the raised head 51 and the groove 11.

Preferably, the base 21 includes a hollow circular disk 211 and a guiding hollow cylinder 212 integrally formed with the hollow circular disk 211, the guiding hollow cylinder 212 is guided by the piston rod 22, the guiding hollow cylinder 212 is equal to the hollow circular diameter in the middle of the hollow circular disk 211 and is axially stretched to form a convex disk structure, the diameter of the hollow circular disk 211 is greater than or equal to the diameter of the sleeve 10, and the diameter of the hollow circular diameter in the guiding hollow cylinder 212 is smaller than the diameter of the hollow circular diameter in the sleeve 10, so as to ensure that the guiding hollow cylinder 212 can extend to the inside of the sleeve 10.

As preferred, sleeve 10 tip opening inner wall both sides are provided with breach 12 respectively, breach 12 one side is followed arc recess 13 has been seted up to sleeve 10 inner wall, direction hollow cylinder 212 both sides correspond arc recess 13 is provided with rectangular shape lug 213, lug 213 by breach 12 gets into behind the sleeve 10 inner wall, through twisting hollow disc 211 makes the rotatable card of lug 213 is gone into in the arc recess 13, thereby make base 21 passes through lug 213 realize with the sealing connection of sleeve 10 tip is fixed, prevents that the inside swell 30 of sleeve 10 from droing outside sleeve 10, and has avoided outside foreign material to get into inside sleeve 10.

Preferably, the guiding hollow cylinder 212 extends into the sleeve 10, the piston rod 22 is movable along the axial direction of the sleeve 10, and preferably, the piston rod 22 is in clearance fit with the guiding hollow cylinder 212, so that a gap between the piston rod 22 and the guiding hollow cylinder 212 is extremely small, and external impurities are prevented from falling into the sleeve to influence the sliding fit between the nose 51 and the groove 11. The guiding hollow cylinder 212 plays a guiding role for the piston rod 22, when external pressure acts on the shock absorption buffer, the piston rod 22 at one end of the sleeve 10 is a first stress point, the piston rod 22 at the other end of the sleeve 10 is arranged on a fixed surface, when the external pressure is applied, the piston rods 22 at the two ends of the sleeve 10 simultaneously contract to respectively push the permanent magnets 40 attracted with the piston rods to longitudinally move, so that the repulsive force between adjacent permanent magnets 40 in the bulge 30 is increased, and the external pressure is eliminated by the buffering force formed by the pressure difference generated by contraction of the closed space between adjacent permanent magnets 40 in the bulge 30, so that the shock absorption and buffering effects are achieved.

Preferably, the inner wall of the sleeve 10 is provided with at least two longitudinal grooves 11, the number of the longitudinal grooves 11 can be increased according to practical situations, and the collar 50 is correspondingly provided with raised heads 51 with the same number as the grooves 11 in the circumferential direction to match with the grooves 11.

Preferably, the bulge is sealed, the inner part of the bulge is a closed space filled with the protective gas, the bulge 30 is made of a TPU bulge 30 material, the TPU material has good elasticity and wear resistance and can bear friction generated by long-term longitudinal movement of the outer wall of the permanent magnet 40 and the inner wall of the bulge 30, and the TPU material product has outstanding bearing capacity, impact resistance and shock absorption performance and good oil resistance, water resistance and mold resistance, so that the TPU material product is an ideal material for the bulge 30. The shielding gas is rare gas, the rare gas is filled into the bulge 30 to form a vacuum closed space inside the bulge 30, and the whole closed space inside the bulge 30 is divided into a plurality of closed spaces between adjacent permanent magnets 40 through the constraint action of the lantern ring 50 on the permanent magnets 40, so that the closed space between every two adjacent permanent magnets 40 can provide enough pressure difference to form buffering force to resist external pressure when the distance between the adjacent permanent magnets 40 is compressed, the repulsion force between the adjacent permanent magnets 40 is assisted to provide the buffering force required by shock absorption and buffering, and the shock absorption and buffering effects are achieved.

Preferably, the end faces of the permanent magnets 40 are provided with protective pads, the protective pads are ACF artificial cartilage foam cushions, the ACF artificial cartilage foam is a good energy absorption material and can absorb 70% to 90% of impact force, and the protective pads are used for preventing rigid contact between the end faces of the adjacent permanent magnets 40 under the limit condition.

Preferably, the sleeve 10 is a carbon fiber composite sleeve 10, and is made of a carbon fiber composite material to satisfy the yield strength and tensile strength required for the shock absorber.

Finally, the above embodiments are only used for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a magnetism shock attenuation buffer, includes sleeve (10), set up in fixing base (20) at sleeve (10) both ends, set up in swell (30) in sleeve (10) and set up in follow in swell (30) permanent magnet (40) that the center pin of sleeve (10) arranged gradually, its characterized in that: permanent magnet (40) are provided with two at least, and adjacent permanent magnet (40) opposite face polarity is the same, be filled with the protection gas in swell (30), fixing base (20) include base (21) and set up and can follow on base (21) sleeve (10) axis direction removal's piston rod (22), base (21) with sleeve (10) end connection is fixed, piston rod (22) one end extend in sleeve (10) and with permanent magnet (40) that are close to the tip in swell (30) are fixed, swell (30) outer corresponding permanent magnet (40) department cover is equipped with lantern ring (50), be provided with plush copper (51) on lantern ring (50), sleeve (10) inner wall axial is provided with recess (11), plush copper (51) with recess (11) sliding fit.

2. A magnetic shock absorber buffer according to claim 1, wherein: the base (21) comprises a hollow disc (211) and a guide hollow cylinder (212) integrally formed with the hollow disc (211), wherein the guide hollow cylinder (212) has the same diameter as the hollow circle in the middle of the hollow disc (211) and is axially stretched.

3. A magnetic shock absorber buffer according to claim 2, wherein: sleeve (10) tip opening inner wall both sides are provided with breach (12) respectively, breach (12) one side is followed arc recess (13) have been seted up to sleeve (10) inner wall, direction hollow cylinder (212) both sides correspondence is provided with lug (213), lug (213) pass through breach (12) get into rotatable card is gone into behind sleeve (10) inner wall in arc recess (13), base (21) pass through lug (213) realize with the connection of sleeve (10) tip is fixed.

4. A magnetic shock absorber buffer according to claim 1, wherein: the inner wall of the sleeve (10) is provided with at least two longitudinal grooves (11), and raised heads (51) are correspondingly arranged on the circumferential direction of the sleeve ring (50) and matched with the grooves (11).

5. A magnetic shock absorber buffer according to claim 1, wherein: the bulge (30) is arranged in a sealing mode, and the inner portion of the bulge (30) is a closed space filled with the protective gas.

6. A magnetic shock absorber buffer according to claim 5, wherein: the bulge (30) is a TPU material bulge (30).

7. A magnetic shock absorber buffer according to claim 5, wherein: the protective gas is rare gas.

8. A magnetic shock absorber buffer according to claim 1, wherein: and a protective pad is arranged on the end face of the permanent magnet (40).

9. A magnetic shock absorber buffer according to claim 8, wherein: the protection pad is an ACF artificial cartilage foam buffer pad.

10. A magnetic shock absorber buffer according to claim 1, wherein: the sleeve (10) is a carbon fiber composite sleeve (10).