CN215513249U - Frame connection structure and fuel cell vehicle - Google Patents
Frame connection structure and fuel cell vehicle Download PDFInfo
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- CN215513249U CN215513249U CN202121974196.6U CN202121974196U CN215513249U CN 215513249 U CN215513249 U CN 215513249U CN 202121974196 U CN202121974196 U CN 202121974196U CN 215513249 U CN215513249 U CN 215513249U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The utility model discloses a frame connection structure and a fuel cell vehicle, wherein the frame connection structure comprises: the first connecting piece is provided with a first pressing part, and the first pressing part is provided with at least a first through hole; the second connecting piece is provided with a second pressing part, and a second through hole corresponding to the first through hole is formed in the second pressing part; the heightening part is connected with the first connecting part or the second connecting part, a space is reserved between the heightening part and the first pressing part or the second pressing part, and the heightening part is provided with a third through hole corresponding to the first through hole; the bolts penetrate through the first through holes, the second through holes and the third through holes in a one-to-one correspondence mode, and the nuts are in threaded connection with the bolts to drive the first abutting portions and the second abutting portions to abut against each other. The stress distributed to the bolt by the structure can be reduced, and the fatigue performance and the reliability of the bolt are improved.
Description
Technical Field
The utility model relates to the field of fuel cell vehicles, in particular to a frame connecting structure and a fuel cell vehicle.
Background
In the present fuel cell commodity circulation car, the fuel cell module adopts the girder of bolt and frame to carry out the erection joint, but after the installation is accomplished, because the big focus of fuel cell module quality is high, bolted connection structure on the frame is after long-time operation, and the bolt easily takes off or even fatigue fracture, makes the fuel cell car have the potential safety hazard in the in-process of traveling.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. To this end, the present invention proposes a frame connection structure capable of reducing stress generated to a bolt when bearing a load.
The utility model also provides a fuel cell vehicle capable of reducing stress generated to the bolt.
According to the frame connection structure of the embodiment of the first aspect of the utility model, the frame connection structure comprises: the first connecting piece is provided with a first pressing part, and the first pressing part is provided with at least a first through hole; the second connecting piece is provided with a second pressing part, and a second through hole corresponding to the first through hole is formed in the second pressing part; the heightening part is connected with the first connecting part or the second connecting part, a space is reserved between the heightening part and the first pressing part or the second pressing part, and the heightening part is provided with a third through hole corresponding to the first through hole; the bolts penetrate through the first through holes, the second through holes and the third through holes in a one-to-one correspondence mode, and the nuts are in threaded connection with the bolts to drive the first abutting portions and the second abutting portions to abut against each other.
The frame connecting structure provided by the embodiment of the utility model at least has the following beneficial effects: through being provided with and increase the piece, increase that the piece is connected with first connecting piece and increase and leave the interval space between piece and the first portion of pressing, or increase that the piece is connected with the second connecting piece and increase and leave the interval space between piece and the second portion of pressing. Therefore, the bolt penetrates through the first through hole, the second through hole and the third through hole and is connected with the nut, so that the first pressing portion and the second pressing portion are pressed against each other to fix the first connecting piece and the second connecting piece. Due to the existence of the spacing space, the length of the bolt is increased, the rigidity of the bolt is reduced, the ratio of the rigidity of the bolt to the rigidity of the connecting structure formed by the first connecting piece and the second connecting piece is reduced, namely the relative rigidity is reduced.
According to some embodiments of the utility model, the height increasing members include a first height increasing member and a second height increasing member, the first height increasing member is connected to the first connecting member, and the second height increasing member is connected to the second connecting member.
According to some embodiments of the utility model, the first pressing part and the second pressing part are located in a middle of a screw rod of the bolt.
According to some embodiments of the utility model, a support structure is arranged between the first heightening member and the first pressing part and/or between the second heightening member and the second pressing part.
According to some embodiments of the utility model, the support structure comprises at least one reinforcing element, the reinforcing element being connected to the first heightening element and the first connecting element, respectively, or the reinforcing element being connected to the second heightening element and the second connecting element.
According to some embodiments of the utility model, the reinforcing member has a plurality of pieces, and the plurality of pieces are uniformly arranged in the space.
According to some embodiments of the utility model, the bolts are multiple, and at least one reinforcing member is disposed between adjacent bolts.
According to some embodiments of the present invention, the bolt further comprises a first washer and a second washer, the first washer is sleeved on the bolt, the first washer is abutted against the nut of the bolt, and the second washer is abutted against the nut.
The fuel cell vehicle according to the second aspect of the present invention includes the frame connecting structure, and further includes a frame, a cross member, and a fuel cell module, wherein the frame is connected to the first connecting member, the cross member is connected to the second connecting member, and the fuel cell module is connected to the frame.
The fuel cell vehicle provided by the embodiment of the utility model has at least the following beneficial effects: the frame is connected with the first connecting piece, the cross beam is connected with the second connecting piece, and the fuel cell module is fixedly connected with the frame. The bolt penetrates through the first through hole, the second through hole and the third through hole, and the bolt is connected with the nut so that the first abutting portion and the second abutting portion abut against each other, the first connecting piece and the second connecting piece are fixedly connected, and the cross beam and the frame body are further fixed. Meanwhile, the heightening part is connected with the first connecting part or the second connecting part, so that an interval space is formed between the heightening part and the first abutting part or the second abutting part, the length of the bolt is increased, the rigidity of the bolt is reduced, the ratio of the rigidity of the bolt to the rigidity of the connecting structure formed by the first connecting part and the second connecting part is reduced, when the load generates a certain stress, the stress distributed to the bolt is reduced, and the fatigue performance and the reliability of the bolt are improved.
According to some embodiments of the present invention, the fuel cell module includes a hydrogen storage tank connected to a hydrogen input terminal of the stack device, a stack device, and an air compressor connected to an air input terminal of the stack device, which are connected to the frame.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a perspective view of one embodiment of the frame attachment structure of the present invention;
FIG. 2 is an exploded perspective view of one embodiment of the frame attachment structure of the present invention;
FIG. 3 is a perspective view of one embodiment of a fuel cell vehicle of the present invention;
fig. 4 is a front view of one embodiment of the fuel cell vehicle of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1 and 2, a vehicle frame connecting structure according to an embodiment of the present invention includes: the first connecting piece 100 is provided with a first pressing part 110, and the first pressing part 110 is provided with at least a first through hole 120; the second connecting piece 200 is provided with a second pressing part 210, and the second pressing part 210 is provided with a second through hole 220 corresponding to the first through hole 120; the height increasing piece 300 is connected with the first connecting piece 100 or the second connecting piece 200, a spacing space 301 is reserved between the height increasing piece 300 and the first pressing part 110 or the second pressing part 210, and the height increasing piece 300 is provided with a third through hole 302 corresponding to the first through hole 120; the bolts 400 and the nuts 500, the bolts 400 are correspondingly inserted into the first through holes 120, the second through holes 220 and the third through holes 302 one by one, and the nuts 500 and the bolts 400 are in threaded connection to drive the first pressing portion 110 and the second pressing portion 210 to be pressed against each other.
By providing the heightening member 300, the heightening member 300 is connected with the first connecting member 100 and a space 301 is left between the heightening member 300 and the first pressing part 110, or the heightening member 300 is connected with the second connecting member 200 and a space 301 is left between the heightening member 300 and the second pressing part 210. Thus, the bolt 400 is inserted into the first through hole 120, the second through hole 220 and the third through hole 302, and the bolt 400 is connected with the nut 500, so that the first pressing portion 110 and the second pressing portion 210 are pressed against each other, and the first connecting member 100 and the second connecting member 200 are fixed. Due to the existence of the spacing space 301, the length of the bolt 400 is increased, the rigidity of the bolt 400 is reduced, and further the ratio of the rigidity of the bolt 400 to the rigidity of the connection structure formed by the first connection member 100 and the second connection member 200 is reduced, that is, the relative rigidity is reduced.
According to the maximum tensile force F of the pre-tightening bolt 4000Calculating the formula:
wherein: f0Maximum tensile force; f' is a pretightening force; cLIs the stiffness of the bolt 400; cFThe rigidity of the middle clamping structure; and F is the axial load force.
Rigidity C of bolt 400LThe rigidity C of the intermediate clamping structure decreases as the length of the bolt 400 increasesFAlthough the stiffness C of bolt 400 decreases as the length increasesLStiffness C of the drop amplitude ratio intermediate structureFThe drop is greater. Thus, the coefficient
Reducing, and thus the magnitude of, the stress that bolt 400 distributes from load
And therefore, under a certain loading force, increasing the length of bolt 400 reduces the maximum tensile force applied to bolt 400, which is beneficial to enhancing the fatigue performance of bolt 400 and improving the reliability.
Referring to fig. 1 and 2, in some embodiments of the present invention, the height increasing member 300 has two first height increasing members 310 and two second height increasing members 320, respectively, the first height increasing members 310 are connected to the first connecting member 100, and the second height increasing members 320 are connected to the second connecting member 200.
The first heightening part 310 is connected with the first connecting part 100, and the second heightening part 320 is connected with the second connecting part 200, that is, a spacing space 301 is left between the first heightening part 310 and the first pressing part 110, and a spacing space 301 is also left between the second heightening part 320 and the second pressing part 210, so that the length of the bolt 400 is increased.
Referring to fig. 1 and 2, in some embodiments of the present invention, the first pressing part 110 and the second pressing part 210 are located in the middle of the screw of the bolt 400.
The screw part of the bolt 400 penetrates through the first through hole 120 and the second through hole 220, the first pressing part 110 and the second pressing part 210 are pressed against each other in the middle position of the screw of the bolt 400, when a load deforms, the wall surface forming the first through hole 120 and the wall surface forming the second through hole 220 are pressed against the middle part of the screw of the bolt 400, the middle part of the screw of the bolt 400 can bear a larger range of deformation, and the probability of breakage of the screw part of the bolt 400 is favorably reduced.
Referring to fig. 1 and 2, in some embodiments of the present invention, a support structure 600 is disposed between the first height increasing member 310 and the first pressing part 110 and/or between the second height increasing member 320 and the second pressing part 210.
Through being provided with bearing structure 600, bearing structure 600 can prevent that first increase piece 310 from being close to first biasing part 110 and/or prevent that second increase piece 320 from being close to between the second biasing part 210 to this can reduce first increase piece 310, second increase piece 320 because of the deformation lead to the probability that interval space 301 reduces, avoids bolt 400 to take place to become flexible, is favorable to improving the reliability.
Referring to fig. 2, in some embodiments of the present invention, the supporting structure 600 includes at least one reinforcing member 610, and the reinforcing member 610 is connected to the first height increasing member 310 and the first connecting member 100, respectively, or the reinforcing member 610 is connected to the second height increasing member 320 and the second connecting member 200.
The reinforcing member 610 is respectively connected with the first heightening member 310 and the first connecting member 100, so as to enhance the position stability between the first heightening member 310 and the first connecting member 100; the reinforcing part 610 is respectively connected with the second heightening part 320 and the second connecting part 200, so that the stability of the position between the second heightening part 320 and the second connecting part 200 is enhanced, the structure is simple, and the implementation is convenient.
In some embodiments of the present invention, the first height increasing member 310 and the first connecting member 100 may be a unitary structure, and the second height increasing member 320 and the second connecting member 200 may be a unitary structure.
Referring to fig. 1 and 2, in some embodiments of the present invention, the reinforcing member 610 has a plurality of pieces, and the plurality of reinforcing members 610 are uniformly arranged in the spaced space 301.
The reinforcing members 610 are provided with a plurality of blocks and are uniformly distributed in the spacing space 301, which is beneficial to enabling the first heightening member 310 and the first connecting member 100, and the second heightening member 320 and the second connecting member 200 to be more stable, and improving the reliability.
Referring to fig. 1 and 2, in some embodiments of the present invention, there are a plurality of bolts 400, and at least one reinforcing member 610 is disposed between adjacent bolts 400.
At least one reinforcing piece 610 is arranged between the adjacent bolts 400, so that the reinforcing pieces 610 are arranged on two sides of each bolt 400, the probability of deformation caused by the fact that the bolts 400 extrude the first heightening piece 310 and the second heightening piece 320 is further reduced when load is carried, and the stability of the structure is improved.
Referring to fig. 2, in some embodiments of the present invention, a first washer 410 and a second washer 420 are further included, the first washer 410 is disposed on the bolt 400, the first washer 410 is abutted against the nut of the bolt 400, and the second washer 420 is abutted against the nut 500.
When bolt 400 and nut 500 threaded connection drive first biasing portion 110 and second biasing portion 210 to support each other and press fixedly, be equipped with first gasket 410 and second gasket 420 through bolt 400 cover for the nut of bolt 400 increases a piece 310 or the second through first gasket 410 and the first butt that increases or 320, nut 500 increases a piece 320 or the first butt that increases through second gasket 420 and second, and with this, can increase the nut, the butt area of nut 500, be favorable to preventing not hard up, improve the reliability of structure.
Referring to fig. 3 and 4, the fuel cell vehicle according to the second embodiment of the present invention includes the frame connection structure, and further includes a frame 700, a cross member 800, and a fuel cell module 900, wherein the frame 700 is connected to the first connection member 100, the cross member 800 is connected to the second connection member 200, and the fuel cell module 900 is connected to the frame 700.
The frame 700 is connected to the first connector 100, the beam 800 is connected to the second connector 200, and the fuel cell module 900 is connected to and fixed to the frame 700. The bolt 400 is inserted into the first through hole 120, the second through hole 220 and the third through hole 302, and the bolt 400 is connected to the nut 500 to make the first pressing portion 110 and the second pressing portion 210 press against each other, so that the first connecting member 100 is fixedly connected to the second connecting member 200, and the beam 800 and the frame are further fixed. Meanwhile, the height increasing member 300 is connected with the first connecting member 100 or the second connecting member 200, so that an interval space 301 is formed between the height increasing member 300 and the first pressing portion 110 or the second pressing portion 210, the length of the bolt 400 is increased, the rigidity of the bolt 400 is reduced, the ratio of the rigidity of the bolt 400 to the rigidity of the connecting structure formed by the first connecting member 100 and the second connecting member 200 is reduced, when a load generates a certain stress, the stress distributed to the bolt 400 is reduced, and the fatigue performance and the reliability of the bolt 400 are improved.
In some embodiments of the present invention, the frame 700 and the first connector 100 may be a unitary structure, and the beam 800 and the second connector 200 may be a unitary structure.
Referring to fig. 3 and 4, in some embodiments of the present invention, the fuel cell module 900 includes a hydrogen storage tank 910, a stack device 920, and an air compressor 930 connected to the frame 700, the hydrogen storage tank 910 being connected to a hydrogen input terminal of the stack device 920, and the air compressor 930 being connected to an air input terminal of the stack device 920.
The hydrogen storage tank 910 transmits hydrogen to the stack device 920, and the air compressor 930 compresses air to input the air to the stack device 920, so that the stack device 920 generates electric energy by consuming the hydrogen and reacting with oxygen, thereby driving the electric components of the fuel cell vehicle to work.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. Frame connection structure, its characterized in that includes:
the connecting device comprises a first connecting piece (100) and a second connecting piece, wherein the first connecting piece is provided with a first pressing part (110), and at least a first through hole (120) is formed in the first pressing part (110);
the second connecting piece (200) is provided with a second pressing part (210), and a second through hole (220) corresponding to the first through hole (120) is formed in the second pressing part (210);
the heightening part (300) is connected with the first connecting piece (100) or the second connecting piece (200), an interval space (301) is reserved between the heightening part (300) and the first pressing part (110) or the second pressing part (210), and the heightening part (300) is provided with a third through hole (302) corresponding to the first through hole (120);
the bolt (400) is correspondingly arranged in the first through hole (120), the second through hole (220) and the third through hole (302) in a penetrating manner, and the nut (500) is in threaded connection with the bolt (400) to drive the first pressing part (110) and the second pressing part (210) to be pressed against each other.
2. The frame connecting structure according to claim 1, characterized in that: increase piece (300) have two and increase piece (310) and second and increase piece (320) for first increase piece (310), first increase piece (310) with first connecting piece (100) are connected, the second increase piece (320) with second connecting piece (200) are connected.
3. The frame connecting structure according to claim 2, characterized in that: the first pressing part (110) and the second pressing part (210) are located in the middle of a screw rod of the bolt (400).
4. The frame connecting structure according to claim 2, characterized in that: and a supporting structure (600) is arranged between the first heightening part (310) and the first pressing part (110) and/or between the second heightening part (320) and the second pressing part (210).
5. The frame connecting structure according to claim 4, characterized in that: the support structure (600) comprises at least one reinforcement (610), the reinforcement (610) being connected to the first heightening part (310) and the first connecting part (100), respectively, or the reinforcement (610) being connected to the second heightening part (320) and the second connecting part (200).
6. The frame connecting structure according to claim 5, characterized in that: the reinforcing members (610) are provided with a plurality of pieces, and the plurality of pieces of reinforcing members (610) are uniformly distributed in the spacing space (301).
7. The frame connecting structure according to claim 5, characterized in that: the bolts (400) are multiple, and at least one reinforcing piece (610) is arranged between every two adjacent bolts (400).
8. The frame connecting structure according to claim 3, characterized in that: the bolt is characterized by further comprising a first gasket (410) and a second gasket (420) which are sleeved on the bolt (400), wherein the first gasket (410) is abutted to a nut of the bolt (400), and the second gasket (420) is abutted to the nut (500).
9. A fuel cell vehicle, characterized in that: the vehicle frame connection structure according to any one of claims 1 to 8, further comprising a frame (700), a cross member (800), and a fuel cell module (900), wherein the frame (700) is connected to the first connector (100), the cross member (800) is connected to the second connector (200), and the fuel cell module (900) is connected to the frame (700).
10. The fuel cell vehicle according to claim 9, characterized in that: the fuel cell module (900) comprises a hydrogen storage tank (910), a stack device (920) and an air compressor (930), wherein the hydrogen storage tank (910) is connected with the frame (700), the hydrogen storage tank (910) is connected with a hydrogen input end of the stack device (920), and the air compressor (930) is connected with an air input end of the stack device (920).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121974196.6U CN215513249U (en) | 2021-08-20 | 2021-08-20 | Frame connection structure and fuel cell vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121974196.6U CN215513249U (en) | 2021-08-20 | 2021-08-20 | Frame connection structure and fuel cell vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215513249U true CN215513249U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121974196.6U Active CN215513249U (en) | 2021-08-20 | 2021-08-20 | Frame connection structure and fuel cell vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215513249U (en) |
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2021
- 2021-08-20 CN CN202121974196.6U patent/CN215513249U/en active Active
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