CN216589005U

CN216589005U - Vibration reduction mechanism, air compressor fixing device and fuel cell system

Info

Publication number: CN216589005U
Application number: CN202123235642.4U
Authority: CN
Inventors: 吴楠
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-24
Anticipated expiration: 2031-12-21

Abstract

The utility model provides a vibration damping mechanism, an air compressor fixing device and a fuel cell system, which relate to the technical field of fuel cells, and the vibration damping mechanism provided by the utility model comprises: the damping device comprises a first sleeve, a second sleeve and a damping pad; the first sleeve is inserted into the second sleeve, and the damping pad is arranged between the first sleeve and the second sleeve; along the axial direction of the first sleeve, one end of the vibration damping pad is provided with a pressure bearing surface, and the other end of the vibration damping pad is provided with a material shortage notch. According to the vibration damping mechanism, the air compressor fixing device and the fuel cell system, the compressed vibration damping pad can be filled in the material shortage gap, the vibration damping pad can be prevented from interfering with other devices when being compressed and deformed, the cushioning effect of the vibration damping pad can be fully exerted, the vibration damping pad can be prevented from directly contacting a fixing piece or a bearing piece, and the technical problem that the vibration damping pad fails due to abrasion is solved.

Description

Vibration reduction mechanism, air compressor fixing device and fuel cell system

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a vibration reduction mechanism, an air compressor fixing device and a fuel cell system.

Background

The centrifugal air compressor for the fuel cell system has a large rotating speed, and vibration impact generated during the operation of the air compressor is transmitted to the outside, so that vibration of external devices is caused, and noise is generated. The rubber pad is additionally arranged at the installation position of the air compressor, so that a cushioning effect can be achieved, but the rubber pad cannot give consideration to vibration in the x direction, the y direction and the z direction. The rubber pad is easily compressed excessively when being installed, and the rubber pad is worn by a fastener or a hand piece when being vibrated, so that the service life of the rubber pad is shortened. In addition, there is a large shear stress between the compressed rubber mat and the contacting metal wall surface, thereby leading to an increased risk of rubber mat adhesion failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vibration damping mechanism, an air compressor fixing device and a fuel cell system, which can enable a vibration damping pad to fully play a vibration damping role and can relieve the technical problem that the vibration damping pad is damaged due to abrasion.

In a first aspect, the present invention provides a vibration damping mechanism comprising: the damping device comprises a first sleeve, a second sleeve and a damping pad;

the first sleeve is inserted into the second sleeve, and the damping pad is arranged between the first sleeve and the second sleeve;

along the axial direction of the first sleeve, one end of the vibration damping pad is provided with a bearing surface, and the other end of the vibration damping pad is provided with a material shortage notch.

With reference to the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein, in an uncompressed state, an end of the damping pad, where the material shortage notch is provided, forms a slope;

the inclined surface is inclined towards the direction approaching the bearing surface from outside to inside along the radial direction of the second sleeve.

With reference to the first aspect, the present disclosure provides a second possible implementation manner of the first aspect, wherein the first sleeve includes: the inner cylinder ring and the first pressing plate are connected to the inner cylinder ring;

the second sleeve includes: the second pressing plate is connected with the outer cylinder ring;

the outer cylinder ring is sleeved outside the inner cylinder ring, and the vibration reduction pad is arranged between the outer cylinder ring and the inner cylinder ring;

the first pressure plate is abutted against the pressure bearing surface.

With reference to the second possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the damping pad includes: a radially extending portion and an axially extending portion, the radially extending portion being integrally formed with the axially extending portion;

the radial extension part is cast between the first pressing plate and the second pressing plate, and the axial extension part is cast between the outer cylinder ring and the second pressing plate;

the material shortage notch is arranged at the end part of the axial extension part deviating from the radial extension part.

In a second aspect, the present invention provides an air compressor fixing device, including: the base, the fastener and the vibration reduction mechanism provided by the first aspect;

the second sleeve is inserted in the mounting hole of the base;

the fastener is used for connecting the vibration reduction mechanism with the engine base, and the first sleeve and the second sleeve jointly extrude the vibration reduction pad and enable the vibration reduction pad to be compressed and deformed so as to fill up the gap of the lacking material.

With reference to the second aspect, the present invention provides a first possible implementation manner of the second aspect, wherein the base is clamped between a first cushioning mechanism and a second cushioning mechanism, and the first cushioning mechanism and the second cushioning mechanism are disposed opposite to each other;

the first cushioning mechanism and the second cushioning mechanism respectively comprise the vibration reduction mechanism.

In combination with the first possible implementation manner of the second aspect, the present invention provides a second possible implementation manner of the second aspect, wherein the fastener connects the first cushioning mechanism and the second cushioning mechanism, and makes the first sleeve of the first cushioning mechanism abut against the first sleeve of the second cushioning mechanism.

With reference to the second possible implementation manner of the second aspect, the present invention provides a third possible implementation manner of the second aspect, wherein when the first sleeve of the first cushioning mechanism abuts against the first sleeve of the second cushioning mechanism, the material shortage gap is completely filled by the vibration damping pad, and opposite end surfaces of the two vibration damping pads are perpendicular to an axis of the first sleeve.

In combination with the first possible implementation manner of the second aspect, the present invention provides a fourth possible implementation manner of the second aspect, wherein the fastening member passes through the carrier, the first cushioning mechanism and the second cushioning mechanism in sequence, and fixes the two first sleeves relative to the carrier.

In a third aspect, the utility model provides a fuel cell system, wherein the fuel cell system comprises the vibration damping mechanism provided in the first aspect, or the fuel cell system comprises the air compressor fixing device provided in the second aspect.

The embodiment of the utility model has the following beneficial effects: adopt first sleeve to insert and locate the telescopic inside of second, the damping pad sets up between first sleeve and second sleeve, along first telescopic axial, the one end of damping pad is equipped with the bearing surface, the other end is equipped with lacks the material opening, when the damping pad receives extrusion deformation, the damping pad can fill to lacking in the material opening, thereby make the damping pad fill fully between first sleeve and second sleeve, can full play damping effect that the damping was filled, and can reduce the shear stress that the damping pad received when being compressed. In addition, the damping pad is protected between the first sleeve and the second sleeve, so that the damping pad can be prevented from being rubbed by other devices, the technical problem that the damping pad fails due to abrasion is solved, and the service life of the damping pad is prolonged.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional view of a damping mechanism provided in an embodiment of the present invention;

FIG. 2 is a schematic view of a damping mechanism provided in an embodiment of the present invention;

fig. 3 is a partial sectional view of an air compressor fixing device according to an embodiment of the present invention;

fig. 4 is a schematic view of an air compressor fixing device and an air compressor provided in an embodiment of the present invention.

Icon: 001-a first sleeve; 110-inner cylindrical ring; 120-a first platen; 002-a second sleeve; 210-an outer cylinder ring; 220-a second platen; 003-vibration damping pad; 301-pressure bearing face; 302-a starved gap; 303-inclined plane; 310-a radial extension; 320-an axial extension; 004-engine base; 005-fastener; 501-bolts; 502-a nut; 006-first cushioning mechanism; 007-a second cushioning mechanism; 008-a carrier; 009-air compressor.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1 and 2, a vibration damping mechanism according to an embodiment of the present invention includes: a first sleeve 001, a second sleeve 002, and a damping pad 003; the first sleeve 001 is inserted inside the second sleeve 002, and the vibration damping pad 003 is disposed between the first sleeve 001 and the second sleeve 002; along the axial of first sleeve 001, the one end of damping pad 003 is equipped with pressure-bearing face 301, and the other end is equipped with scarce material opening 302.

When the vibration damping mechanism is used for cushioning, the pressure-bearing surface 301 of the vibration damping pad 003 bears pressure, the pressure can be transmitted to the vibration damping pad 003, and the vibration damping pad 003 generates elastic deformation when being compressed, so that the vibration damping pad 003 extends into the material shortage notch 302, and the material shortage notch 302 is filled. The extension space is provided for the compressed damping pad 003 through the material shortage notch 302, so that the damping pad 003 can be prevented from overflowing when being compressed, and the damping pad 003 cannot interfere with other devices. In addition, the vibration damping pad 003 of the compression deformation can be fully filled in the material shortage notch 302, so that the space between the first sleeve 001 and the second sleeve 002 can be fully filled by the vibration damping pad 003, and the vibration damping effect of the vibration damping pad 003 can be fully exerted. Moreover, the damping pad 003 is protected between the first sleeve 001 and the second sleeve 002, so that the damping pad 003 can be prevented from rubbing against other devices, and the technical problem that the damping pad 003 fails due to abrasion is solved.

In the embodiment of the utility model, in a non-extruded state, one end of the damping pad 003 provided with the material shortage notch 302 forms an inclined plane 303; the inclined surface 303 is inclined toward the pressure receiving surface 301 from the outside to the inside in the radial direction of the second sleeve 002.

As the pressure face 301 of the damping pad 003 is subjected to pressure, the ramp 303 gradually tends to be perpendicular to the axis of the first sleeve 001 as the pressure increases. During the use, the axial position of adjustable first sleeve 001 for second sleeve 002, and then the axial compression volume of adjusting damping pad 003 to guarantee that inclined plane 303 is perpendicular to the axis of first sleeve 001, make scarce material notch 302 totally filled up by the damping pad 003 that warp just from this.

Further, the first sleeve 001 includes: an inner cylindrical ring 110 and a first pressing plate 120 connected to the inner cylindrical ring 110; the second sleeve 002 includes: an outer cylinder ring 210 and a second pressing plate 220 connected to the outer cylinder ring 210; the outer cylinder ring 210 is sleeved outside the inner cylinder ring 110, and the damping pad 003 is arranged between the outer cylinder ring 210 and the inner cylinder ring 110; the first presser plate 120 abuts on the pressure receiving face 301.

When the damping device is used, the first sleeve 001 is pressed against the second sleeve 002 along the axial direction, and the damping pad 003 positioned between the first pressing plate 120 and the second pressing plate 220 is compressed, so that the damping pad 003 is deformed and extends between the inner cylinder ring 110 and the outer cylinder ring 210, and the gap 302 between the inner cylinder ring 110 and the outer cylinder ring 210 can be filled.

The vibration damping pad 003 between the first and

second presser plates

120 and 220 serves to damp vibrations in the axial direction when subjected to vibration shocks from the axial direction. When receiving vibration impact from the radial direction, the vibration damping pad 003 located between the inner cylindrical ring 110 and the outer cylindrical ring 210 performs a radial vibration damping action.

Further, the vibration damping pad 003 includes: a radial extension 310 and an axial extension 320, the radial extension 310 being integrally formed with the axial extension 320; the radial extension part 310 is cast between the first pressing plate 120 and the second pressing plate 220, and the axial extension part 320 is cast between the outer cylinder ring 210 and the second pressing plate 220; the starved gap 302 is provided at the end of the axially extending portion 320 facing away from the radially extending portion 310.

During processing, the first sleeve 001 and the second sleeve 002 are coaxially arranged, and then the radial extension portion 310 and the axial extension portion 320 are formed between the first sleeve 001 and the second sleeve 002 in a pouring mode, so that the vibration damping pad 003 can be tightly connected with the first sleeve 001 and the second sleeve 002. In a natural state, an end surface of the axial extension part 320, which faces away from the first pressing plate 120, forms an inclined surface 303, and a material shortage notch 302 is formed along the inclined surface 303. When the first sleeve 001 is extruded and the distance between the first pressing plate 120 and the second pressing plate 220 is shortened, the material shortage notch 302 is gradually filled until the inclined plane 303 is perpendicular to the axis of the first sleeve 001, so that the shearing stress between the damping pad 003 and the sleeve is reduced, and the adhesion failure risk of the damping pad 003 is reduced.

Example two

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, an air compressor fixing device provided in an embodiment of the present invention includes: the base 004, the fastener 005 and the vibration reduction mechanism provided by the above embodiment; the second sleeve 002 is inserted into the mounting hole of the base 004; the fastener 005 is used for connecting the vibration reduction mechanism with the base 004, and the first sleeve 001 and the second sleeve 002 jointly press the vibration reduction pad 003 to make the vibration reduction pad 003 compressively deform to fill the gap 302 of lacking material.

Specifically, the fastener 005 is inserted into the inner cylindrical ring 110, the outer cylindrical ring 210 is inserted into the mounting hole of the base 004, and under the condition that the first sleeve 001 is fixed relative to the fastener 005, the radial extension portion 310 can damp axial vibration on the base 004, and the axial extension portion 320 can damp radial vibration on the base 004. The base 004 can be used as a mounting base of the air compressor 009, and can reduce vibration impact of the air compressor in all directions through the combined action of the radial extension part 310 and the axial extension part 320.

As shown in fig. 1, 2, 3 and 4, in the embodiment of the present invention, the base 004 is clamped between the first cushioning mechanism 006 and the second cushioning mechanism 007, and the first cushioning mechanism 006 and the second cushioning mechanism 007 are disposed opposite to each other; the first and

second bradyseism mechanisms

006, 007 each include a vibration damping mechanism.

Specifically, the base 004 is clamped between the two second pressing plates 220, the two outer cylinder rings 210 are coaxial, and the two outer cylinder rings 210 are inserted into the mounting hole of the base 004. The fastener 005 axially compresses the first and

second bradyseism mechanisms

006, 007 to abut the two inner cylindrical rings 110, whereby the two first sleeves 001 are relatively fixed to the fastener 005 and the outer cylindrical ring 210 vibrates along with the seat 004, and is damped in the radial and axial directions by the damping pad 003.

Further, the fastener 005 connects the first cushioning mechanism 006 and the second cushioning mechanism 007, and makes the first sleeve 001 of the first cushioning mechanism 006 abut against the first sleeve 001 of the second cushioning mechanism 007.

In one embodiment, the fastening member 005 may be an elastic clamping device, and the first and second damping

mechanisms

006 and 007 are clamped by the elastic clamping device, so that the two first sleeves 001 disposed opposite to each other have a tendency to move toward each other.

In the present embodiment, the fastener 005 includes: a bolt 501 and a nut 502; the bolt 501 passes through the carrier 008, the first damping mechanism 006 and the second damping mechanism 007 in sequence, and fixes the two first sleeves 001 relative to the carrier 008. The end of bolt 501 abuts against the end surface of the bearing member 008 which is away from the first cushioning mechanism 006, the nut 502 is fitted on the bolt 501, and the nut 502 abuts against the second cushioning mechanism 007. The preload force can be adjusted by screwing the nut 502, and the nut 502 is tightened until the two inner rings 110 abut, at which time the two first sleeves 001 are fixed relative to each other, and the two first sleeves 001 are compressed between the bearing element 008 and the nut 502. Vibration of the air compressor is transmitted to the second sleeve 002 through the base 004, the vibration damping pad 003 between the first sleeve 001 and the second sleeve 002 has radial and axial vibration damping effects, and vibration generated by the air compressor can be prevented from being transmitted to other devices of the bearing piece 008 and the fuel cell.

It should be noted that, by configuring the material usage of pouring the vibration damping pad 003 and configuring the axial dimension of the inner barrel ring 110 according to the thickness dimension of the base 004, it is ensured that when the first sleeve 001 of the first vibration damping mechanism 006 abuts against the first sleeve 001 of the second vibration damping mechanism 007, the material shortage gap 302 is completely filled by the vibration damping pad 003, and the opposite end faces of the two vibration damping pads 003 are perpendicular to the axis of the first sleeve 001. Not only can avoid damping pad 003 by excessive compression, can ensure damping pad 003's compression pretightning force in addition to be moderate. In a compressed state, the vibration damping pad 003 fills the material shortage gap 302, so that the shear stress at the joint of the vibration damping pad 003 and the inner cylinder ring 110 is reduced, and the service life of the vibration damping mechanism is prolonged.

EXAMPLE III

As shown in fig. 1, fig. 2, fig. 3, and fig. 4, a fuel cell system provided in an embodiment of the present invention includes the above-mentioned vibration reduction mechanism or air compressor fixing device, and the fuel cell system has the technical effects of the above-mentioned vibration reduction mechanism and air compressor fixing device, which are not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A vibration damping mechanism, comprising: a first sleeve (001), a second sleeve (002), and a damping pad (003);

the first sleeve (001) is inserted inside the second sleeve (002), and the damping pad (003) is disposed between the first sleeve (001) and the second sleeve (002);

along the axial of first sleeve (001), the one end of damping pad (003) is equipped with pressure-bearing face (301), and the other end is equipped with scarce material opening (302).

2. Damping mechanism according to claim 1, characterized in that the damping pad (003) is provided with a bevel (303) at the end provided with the starvation notch (302) in an uncompressed state;

the inclined surface (303) is inclined in a direction approaching the pressure bearing surface (301) from the outside to the inside in the radial direction of the second sleeve (002).

3. Damping mechanism according to claim 1, characterized in that the first sleeve (001) comprises: an inner cylinder ring (110) and a first pressure plate (120) connected to the inner cylinder ring (110);

the second sleeve (002) includes: the device comprises an outer cylinder ring (210) and a second pressure plate (220) connected to the outer cylinder ring (210);

the outer cylinder ring (210) is sleeved outside the inner cylinder ring (110), and the vibration damping pad (003) is arranged between the outer cylinder ring (210) and the inner cylinder ring (110);

the first pressing plate (120) abuts against the pressure bearing surface (301).

4. The damping mechanism according to claim 3, characterized in that the damping pad (003) comprises: a radial extension (310) and an axial extension (320), the radial extension (310) being integrally formed with the axial extension (320);

the radial extension (310) is cast between the first pressing plate (120) and the second pressing plate (220), and the axial extension (320) is cast between the outer barrel ring (210) and the second pressing plate (220);

the starved gap (302) is provided at an end of the axially extending portion (320) facing away from the radially extending portion (310).

5. The utility model provides an air compressor machine fixing device which characterized in that includes: a housing (004), a fastener (005) and a damping mechanism according to any one of claims 1 to 4;

the second sleeve (002) is inserted into the mounting hole of the base (004);

the fastener (005) is used for connecting the vibration damping mechanism with the base (004), and the first sleeve (001) and the second sleeve (002) jointly press the vibration damping pad (003) and make the vibration damping pad (003) compressively deform so as to fill the material shortage gap (302).

6. The air compressor fixing device according to claim 5, wherein the base (004) is clamped between a first cushioning mechanism (006) and a second cushioning mechanism (007), the first cushioning mechanism (006) and the second cushioning mechanism (007) being arranged opposite to each other;

the first cushioning mechanism (006) and the second cushioning mechanism (007) respectively comprise the vibration reduction mechanism.

7. The air compressor fixing device according to claim 6, characterized in that the fastener (005) connects the first cushioning mechanism (006) and the second cushioning mechanism (007) and causes the first sleeve (001) of the first cushioning mechanism (006) to abut against the first sleeve (001) of the second cushioning mechanism (007).

8. The air compressor fixing device according to claim 7, wherein when the first sleeve (001) of the first cushioning mechanism (006) abuts against the first sleeve (001) of the second cushioning mechanism (007), the gap (302) is completely filled by the damping pad (003), and the opposite end faces of the two damping pads (003) are perpendicular to the axis of the first sleeve (001).

9. The air compressor fixing device according to claim 6, characterized in that the fastening member (005) passes through the bearing member (008), the first cushioning mechanism (006) and the second cushioning mechanism (007) in sequence and fixes the two first sleeves (001) relative to the bearing member (008).

10. A fuel cell system characterized in that the fuel cell system includes the vibration damping mechanism according to any one of claims 1 to 4, or the fuel cell system includes the air compressor fixing device according to any one of claims 5 to 9.