CN220096147U

CN220096147U - CNG motorcycle type gas cylinder mounting structure

Info

Publication number: CN220096147U
Application number: CN202321661243.0U
Authority: CN
Inventors: 韩鸣; 司科军; 任彦臻
Original assignee: Chongqing Changan Kuayue Automobile Co ltd
Current assignee: Chongqing Changan Kuayue Automobile Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2023-11-28
Anticipated expiration: 2033-06-27

Abstract

The utility model relates to the technical field of CNG gas cylinder installation for vehicles and discloses a CNG vehicle type gas cylinder installation structure, which comprises a gas cylinder tightening mechanism and a vehicle body connecting mechanism, wherein the gas cylinder tightening mechanism comprises a plurality of tightening bands and a plurality of connecting plates, the tightening bands are assembled into a plurality of annular tightening band assemblies, the connecting plates are arranged on the tightening bands, and the connecting plates are symmetrically distributed along the axial direction of the tightening band assemblies; the vehicle body connecting mechanism comprises a cross beam and a fixing seat, the bottom of the fixing seat is connected with the cross beam, and the top of the fixing seat is connected with the connecting plate. The problem of current CNG gas cylinder mounting structure exists that mounting structure is complicated, exist abnormal sound in the use is solved.

Description

CNG motorcycle type gas cylinder mounting structure

Technical Field

The utility model relates to the technical field of CNG gas cylinder installation for vehicles, in particular to a CNG vehicle type gas cylinder installation structure.

Background

The CNG vehicle type is characterized in that a set of device using Compressed Natural Gas (CNG) as a combustion raw material is additionally arranged on the basis of unchanged single oil supply system of a prototype vehicle, the power performance of the vehicle is reduced by not more than 5% after the CNG vehicle is additionally arranged, the emission is far superior to the limit value of European standard II (reaching European standard III), the driving characteristics of the vehicle are unchanged from those before the CNG vehicle is additionally arranged, and the gas storage pressure of a CNG gas cylinder for the vehicle is 20MPa.

CNG cylinders are used as high-pressure vessels for storing compressed natural gas and must meet relevant standards when installed on vehicles. At present, the common mounting mode is to install CNG gas cylinder between the frame left and right longeron below the vehicle to fix through staple bolt assembly and the crossbeam on the longeron, in order to avoid CNG gas cylinder to occupy the interior space of car, also be convenient for dismantle, the maintenance of gas cylinder in the future simultaneously. However, the existing CNG gas cylinder mounting structure has the problems of complex structure, abnormal sound in the vicinity of mounting points in the using process due to weak connection strength and the like.

Disclosure of Invention

The utility model aims to provide a CNG vehicle type gas cylinder mounting structure, which solves the problems that the existing CNG gas cylinder mounting structure is complex in mounting structure and abnormal noise exists in the using process.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the CNG vehicle type gas cylinder mounting structure comprises a gas cylinder tightening mechanism and a vehicle body connecting mechanism, wherein the gas cylinder tightening mechanism comprises a plurality of tightening bands and a plurality of connecting plates, the tightening bands are assembled into a plurality of annular tightening band assemblies, the connecting plates are arranged on the tightening bands, and the connecting plates are symmetrically distributed along the axial direction of the tightening band assemblies; the vehicle body connecting mechanism comprises a cross beam and a fixing seat, the bottom of the fixing seat is connected with the cross beam, and the top of the fixing seat is connected with the connecting plate.

The beneficial effect of this scheme is: through being connected connecting plate and tightening strap, be connected the fixing base again with between the connecting plate and realize fixing CNG gas cylinder at the crossbeam, through with the part whole integration of CNG gas cylinder installation on the crossbeam, make mounting structure form an independent module to realize mounting structure is simple. And the problem that abnormal sound is easy to occur to the mounting point in the using process due to weak strength of the mounting structure can be avoided to the greatest extent.

1. The plurality of tightening belts are arranged to be assembled into the multi-ring-shaped tightening belt assembly, so that the tightening and fixing of the gas cylinder tightening mechanism to the CNG gas cylinder is realized, and the stability of the gas cylinder after installation is ensured.

2. Considering that the CNG gas cylinder is cylindrical as a whole, when the CNG gas cylinder is fixed at the bottom of a vehicle through the tightening belt, the tightening belt thoroughly has a certain distance, the height of the whole beam is increased by the existing device generally so as to meet the space distance required by the height of the CNG gas cylinder, and the scheme is characterized in that a fixing seat is additionally arranged between the beam and the gas cylinder tightening mechanism so as to provide redundant space for the CNG gas cylinder at the bottom of the vehicle, thereby avoiding increasing the height of the whole beam, saving the material consumption of the whole mounting structure and the weight of the mounting structure, further reducing the load of mounting points and avoiding abnormal sound.

Preferably, the tightening bands comprise damping parts and fixing parts, the fixing parts are clamped in the damping parts, and the connecting plates are connected with the fixing parts; the damping part is made of rubber, and the fixing part is made of metal.

The beneficial effect of this scheme is: 1. the fixing part is clamped in the damping part, so that the damping part is contacted with the surface of the CNG gas cylinder, and rigid collision generated by contact between the mounting structure and the CNG gas cylinder is buffered, so that abnormal sound is further avoided; and set up the shock attenuation portion, when utilizing the strap to carry out the hoop fastening to CNG gas cylinder, the shock attenuation portion that can take place certain degree deformation can further improve the stability of being connected between strap assembly and the CNG gas cylinder.

2. The fixing part is made of metal and is used for fixing the CNG gas cylinder and stably connecting the gas cylinder tightening mechanism with the vehicle body connecting mechanism.

Preferably, the gas cylinder tightening mechanism further comprises a protective cover, and the protective cover is sleeved on the tightening belt.

The beneficial effect of this scheme is: the protection cover is used for shielding and protecting the lower half part of the CNG gas cylinder which is hung at the bottom of the vehicle, so that deformation and damage caused by collision of foreign matters such as stones and the like on the CNG gas cylinder during running of the vehicle are avoided.

Preferably, the shock absorption part is provided with a convex groove, the fixing part is clamped at the bottom of the convex groove, and the protective cover is connected above the convex groove.

The beneficial effect of this scheme is: because the fixed part joint is in the bottom of the protruding style of calligraphy recess of shock attenuation portion, therefore, there is the space between fixed part and the safety cover, in the vehicle driving process, air is discharged by the recess other end after entering into the space through recess one end, take away the heat of fixed part, play the radiating effect to the fixed part, avoid guaranteeing structural joint strength and need use metal material, and avoid the abnormal sound need set up under the prerequisite of shock attenuation portion parcel fixed part, lead to the fixed part to rise the temperature in summer or lead to the fixed part to rise the temperature because of the heat that CNG gas cylinder use produced, lead to the fact the destruction to the shock attenuation portion of rubber material, influence the installation strength and the life of whole mounting structure.

Preferably, the protection cover is provided with a plurality of bulges and lightening holes, and the bulges and the lightening holes are distributed in a crossing way.

The beneficial effect of this scheme is: the bulge can improve the strength of the structure of the protective cover, so that the protective cover is prevented from deforming in the daily use process, and the protection effect on the CNG gas cylinder is prevented from being influenced; the weight-reducing holes can reduce the overall weight of the protective cover, so that the stability of the fixed mounting structure is further improved, and the strength is improved.

Preferably, the cross beam is provided with a plurality of drain holes and a plurality of reinforcing parts.

The beneficial effect of this scheme is: the reinforcement part has the same effect as the bulge on the protective cover, and can increase the strength of the beam structure, thereby further ensuring the stability of the CNG gas cylinder after being installed; the drainage hole plays the role of draining accumulated water in the cross beam, and simultaneously can reduce the weight of the cross beam, so that the stability of the mounting structure fixed at the bottom of the vehicle is further improved.

Preferably, the inside of the fixing seat is hollow, and a connecting nut is arranged in the fixing seat and is connected with the connecting plate through a bolt.

The beneficial effect of this scheme is: the inside of the fixed seat is hollow, so that the weight of the whole installation structure is reduced, and the stability of connection between the fixed structure and the vehicle body is improved; the connecting nut is arranged in the fixing seat to improve the convenience degree of installation.

Preferably, the fixing portion is provided with a plurality of welding edges.

The fixing seat is welded and fixed on the cross beam through the welding edge, so that the stability of the connection between the fixing seat and the cross beam can be ensured.

Drawings

FIG. 1 is a three-dimensional view of an embodiment of the present utility model;

FIG. 2 is an exploded view of an embodiment of the present utility model;

FIG. 3 is a three-dimensional view of a tightening strap according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a tightening strap according to an embodiment of the present utility model;

FIG. 5 is a three-dimensional view of a protective cover in an embodiment of the utility model;

FIG. 6 is a three-dimensional view of a holder according to an embodiment of the present utility model;

fig. 7 is a three-dimensional view of a beam in an embodiment of the utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: CNG gas cylinder 1, tightening strap 2, connecting plate 21, mounting hole 211, damper 22, groove 221, fixing portion 23, fixing bolt 24, connecting bolt 25, reinforcing plate 26, protective cover 3, boss 31, lightening hole 32, end cover 33, fixing base 4, connecting nut 41, welding edge 42, cross beam 5, drain hole 51, reinforcing portion 52.

Examples

The embodiment is basically as shown in figures 1-7, and the CNG vehicle-type gas cylinder mounting structure as shown in figure 1 comprises a gas cylinder tightening mechanism and a vehicle body connecting mechanism, wherein the CNG gas cylinder 1 is hung and fixed at the bottom of a vehicle through the gas cylinder tightening mechanism and the vehicle body connecting mechanism, so that more space is reserved in the vehicle.

The gas cylinder tightening mechanism comprises a plurality of tightening bands 2, a plurality of connecting plates 21 and a protective cover 3, wherein the tightening bands 2 can be assembled into a plurality of annular tightening band assemblies, and the tightening band assemblies are tightly sleeved on the CNG gas cylinder 1 to realize tightening and fixing of the CNG gas cylinder 1. As shown in fig. 2, in this embodiment, two tightening strap assemblies are provided, the two tightening strap assemblies are respectively located at two ends of the CNG gas cylinder 1, and each tightening strap assembly is formed by assembling two semicircular tightening straps 2. As shown in fig. 3, each tightening strap 2 includes a shock absorbing portion 22 and a fixing portion 23, the shock absorbing portion 22 is used for buffering rigid collision generated by contact between the mounting structure and the CNG gas cylinder 1 and between the components, abnormal sound is avoided, the material is rubber, the shock absorbing portion 22 made of soft rubber material is deformed, and stability after connection between the tightening strap assembly and the CNG gas cylinder 1 can be further improved; the fixing portion 23 is made of metal, and is made of iron, and is used for fixing the CNG gas cylinder 1 and stably connecting the gas cylinder tightening mechanism and the vehicle body connecting mechanism. The fixing portion 23 is clamped to the damper portion 22 in a specific clamping manner as shown in fig. 4: the shock absorbing portion 22 is provided with a convex groove 221, two ends of the groove 221 extend out of two ends of the shock absorbing portion 22, namely, the groove 221 is a through groove, and the fixing portion 23 is clamped at the bottom of the convex groove 221 by directly utilizing the deformable characteristic of the shock absorbing portion 22 during clamping.

The connecting plates 21 are respectively fixed at two ends of each fixing portion 23, in this embodiment, the connecting plates 21 and the fixing portions 23 are integrally formed in a fixed connection manner, and the fixed connecting plates 21 are symmetrically distributed along the axial direction of the tightening belt assembly. The connection plates 21 are provided with connection holes, and the directions shown in fig. 3 are described as follows: the upper connecting plate 21 and the lower connecting plate 21 are attached to each other after the upper tightening strap 2 and the lower tightening strap 2 are spliced and the connecting holes are coaxial, and the two tightening straps 2 can be fixed on the CNG gas cylinder 1 by fixing one connecting bolt 25 in the two connecting holes. And, the length of the connecting plate 21 in the upper tightening strap 2 is greater than the length of the connecting plate 21 on the lower tightening strap 2, and the connecting plate 21 in the upper tightening strap 2 is also provided with a mounting hole 211, and the fixing connection between the connecting plate 21 and the vehicle body connecting mechanism is realized through the mounting hole 211. Meanwhile, triangular reinforcing plates 26 are welded and fixed on two sides of the connecting plate 21, one side of each triangular reinforcing plate 26 is fixed with the connecting plate 21, and the other side of each triangular reinforcing plate is fixed with the fixing part 23, so that the stability of fixing between the tightening strap 2 and the vehicle body connecting mechanism is further improved, and the mounting strength of the whole mounting mechanism is improved.

As shown in fig. 2, the protecting cover 3 is in a hollow semi-cylindrical shape, and is used for shielding and protecting the lower half part of the CNG gas cylinder 1 hung at the bottom of the vehicle, so as to avoid deformation and damage caused by impact of foreign matters such as stones on the CNG gas cylinder 1 during running of the vehicle; and in order to improve the protection effect of the protection cover 3, two ends of the protection cover 3 are detachably and fixedly connected with an end cover 33 through bolts respectively, the end cover 33 is detachably connected so as to facilitate the installation and the disassembly of the structure, and the fixed end cover 33 is not contacted with the surface of the CNG gas cylinder 1. The protection cover 3 is fixed on two tightening belt assemblies, and in this embodiment, the material of the protection cover 3 is also iron, and the specific connection mode of the protection cover 3 is as follows: three through holes are respectively formed in two ends of the protecting cover 3, three through holes are correspondingly formed in the fixing portions 23 in the tightening bands 2 at two ends of the CNG gas cylinder 1, fixing bolts 24 are arranged in the through holes in the protecting cover 3 and the through holes in the fixing portions 23, fixing nuts of the fixing bolts 24 are arranged between the fixing portions 23 and the damping portions 22, the bolts are prevented from being in contact with the CNG gas cylinder 1, and after the bolts sequentially penetrate through the fixing portions 23 and the protecting cover 3, the bolts are locked through moving nuts. After the protective cover 3 is fixed on the tightening strap 2, as shown in fig. 4, one end of the rubber shock absorbing portion 22 is positioned between the iron protective cover 3 and the fixing portion 23, so that abnormal sound generated by the installation structure due to rigid contact when the protective cover 3 is connected with the fixing portion 23 can be avoided; meanwhile, the shock absorption part 22 is arranged at the place where the gas cylinder tightening mechanism is in contact with the surface of the CNG gas cylinder 1, and abnormal sound is further avoided. In addition, because the fixed part 23 joint is in the bottom of the protruding style of calligraphy recess 221 of damper 22, therefore, there is the space between fixed part 23 and the safety cover 3, in the vehicle driving, air is discharged by the recess 221 other end after entering into the space through recess 221 one end, take away the heat of fixed part 23, play the radiating effect to fixed part 23, avoid guaranteeing the structural joint intensity and need use the metal material, and avoid the abnormal sound to set up under the prerequisite that damper 22 wraps up fixed part 23, lead to fixed part 23 to rise the temperature in summer or lead to fixed part 23 to rise the temperature because of CNG gas cylinder 1 use heat that produces, cause the destruction to rubber material's damper 22, influence whole mounting structure's installation strength and life.

As shown in fig. 5, the protecting cover 3 is provided with a plurality of protrusions 31 and lightening holes 32, the protrusions 31 are all in a strip shape, the protrusions 31 are different in size, the added protrusions 31 can improve the strength of the structure of the protecting cover 3, and the protecting cover 3 is prevented from deforming in the daily use process, so that the protecting effect on the CNG gas cylinder 1 is prevented from being influenced; the lightening holes 32 are all formed into square shapes, the same size of area is formed by the lightening holes 32, the lightening holes 32 and the protrusions 31 are distributed in a crossed mode, and more protrusions 31 are formed around the bigger lightening holes 32 so as to balance the stability of the whole structure of the protective cover 3. The weight reducing holes 32 can reduce the weight of the whole protective cover 3, so that the stability of the fixed mounting structure is further improved, the stress of mounting points is reduced, and the connection strength is improved; in addition, a row of lightening holes 32 are formed in the middle of the protective cover 3 along the axial direction of the protective cover, when a vehicle is in a rainwater environment, the row of lightening holes 32 can timely discharge rainwater in the protective cover 3, and the possibility of rusting and damaging parts such as bolts on the protective cover 3 can be reduced while the structural weight is increased due to accumulation of rainwater is avoided.

As shown in fig. 2, the vehicle body connecting mechanism includes a cross beam 5 and fixing bases 4, in this embodiment, two cross beams 5 are provided, and two fixing bases 4 are welded and fixed on each cross beam 5. The two cross beams 5 are fixed on longitudinal beams on two sides of the vehicle body in a suspension spot welding mode, and the two cross beams 5 are parallel after being fixed. As shown in fig. 7, the beam 5 is provided with a plurality of reinforcing parts 52, and the reinforcing parts 52 and the protrusions 31 on the protective cover 3 have the same function, so that the strength of the structure of the beam 5 can be increased, and the stability of the CNG gas cylinder 1 after being installed is further ensured; the cross beam 5 is provided with a plurality of drain holes 51, the shape of the drain holes 51 is different from that of the cross beam 5, and the drain holes 51 play a role in draining accumulated water in the cross beam 5, and simultaneously can reduce the weight of the cross beam 5, so that the stability of the mounting structure fixed at the bottom of a vehicle is further improved.

As shown in fig. 6, the whole fixing seat 4 is in a frustum shape, and the height from the top of the fixing seat 4 to the bottom of the cross beam 5 is greater than the radius of the CNG gas cylinder 1, so that a redundant space is provided for the CNG gas cylinder 1 to be installed at the bottom of the vehicle. The inside of the fixed seat 4 is hollow and is formed in a bending and spot welding mode, so that the structural strength of the fixed seat 4 is ensured, and meanwhile, the difficulty of die casting forming production is reduced; after forming, four welding edges 42 are arranged below the fixing seat 4, the fixing seat 4 is welded and fixed on the cross beam 5 through the four welding edges 42, the connection stability of the fixing seat 4 and the cross beam 5 is ensured, a through hole is formed in the top of the fixing seat 4, a connecting nut 41 is welded and fixed inside the fixing seat 4, the connecting nut 41 is connected with the mounting hole 211 on the connecting plate 21 through bolts, and the CNG gas cylinder 1 can be fixedly connected on the cross beam 5 through the tightening belt assembly. Through with the whole integration of the part of CNG gas cylinder 1 installation on crossbeam 5, make mounting structure form an independent module to realize to the utmost avoiding because of mounting structure intensity weak, make the easy problem of abnormal sound that takes place of mounting point in the use.

The specific implementation process is as follows: in the whole CNG vehicle forming process, two cross beams 5 are fixed on two longitudinal beams at the bottom of a vehicle body in a suspension spot welding mode, the vehicle body is required to be subjected to electrophoresis and then to processes such as paint coating, and in an electrophoresis tank, accumulated water in the cross beams 5 is timely discharged through drain holes 51 in the cross beams 5 so as to carry out the next operation.

The upper and lower tightening bands 2 are connected and fixed through the connecting plates 21, so that the tightening and fixing of the two ends of the CNG gas cylinder 1 are realized, in the process, the damping part 22 made of rubber material can be tightly attached to the CNG gas cylinder 1 by continuously tightening the connecting bolts 25, and the stability after tightening is ensured; the protection cover 3 is fixed on the tightening belt 2 through bolts, the protection cover is sleeved on the CNG gas cylinder 1, and the two end covers 33 are fixed at the two ends of the protection cover 3 through bolts so as to protect the two side end parts of the CNG gas cylinder 1. Meanwhile, the four fixing seats 4 are welded and fixed on the cross beam 5 according to the positions of the four mounting holes 211 on the connecting plates 21 on the two sides of the CNG cylinder 1, and the cylinder tightening mechanism and the vehicle body connecting mechanism are fixedly connected through the mounting holes 211 and the connecting nuts 41 inside the fixing seats 4, so that the CNG cylinder 1 is fixedly mounted at the bottom of the vehicle. The connecting plate 21 is fixed with the fixed part 23 in the tightening strap 2, and then is directly connected with the fixed seat 4 through the bolt, so that the whole connecting structure is compact and simple in connection, the use of the connecting piece is reduced while the fixing strength is ensured, and abnormal sound is further prevented.

In the running process of the vehicle, the damping part 22 in the tightening belt 2 can buffer and damp the space between the fixing part 23 and the surface of the CNG cylinder 1 and the space between the fixing part 23 and the protective cover 3, so that abnormal sound of the whole installation structure is further avoided. And can produce the heat in CNG gas cylinder 1 use, this heat can make the fixed part 23 of metal material intensify to fixed part 23 also can heat up under the high temperature environment in summer, and offer protruding style of calligraphy recess 221 on through damper 22, make there is the space between fixed part 23 and the safety cover 3, the air inflow space just can take away the heat of fixed part 23 in the vehicle driving process, avoids the fixed part 23 high temperature to damage damper 22, influences mounting structure's stability.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. CNG motorcycle type gas cylinder mounting structure, its characterized in that: the gas cylinder tightening mechanism comprises a plurality of tightening bands and a plurality of connecting plates, the tightening bands are assembled into a plurality of annular tightening band assemblies, the connecting plates are arranged on the tightening bands, and the connecting plates are symmetrically distributed along the axial direction of the tightening band assemblies; the vehicle body connecting mechanism comprises a cross beam and a fixing seat, the bottom of the fixing seat is connected with the cross beam, and the top of the fixing seat is connected with the connecting plate.

2. The CNG vehicle type gas cylinder mounting structure according to claim 1, wherein: the tightening bands comprise damping parts and fixing parts, the fixing parts are clamped in the damping parts, and the connecting plates are connected with the fixing parts; the damping part is made of rubber, and the fixing part is made of metal.

3. The CNG vehicle type gas cylinder mounting structure according to claim 2, wherein: the gas cylinder tightening mechanism further comprises a protective cover, and the protective cover is sleeved on the tightening belt.

4. A CNG vehicle type gas cylinder mounting structure according to claim 3, wherein: the shock-absorbing part is provided with a convex groove, the fixing part is clamped at the bottom of the convex groove, and the protective cover is connected above the convex groove.

5. The CNG vehicle type gas cylinder mounting structure according to claim 4, wherein: the protection cover is provided with a plurality of bulges and lightening holes, and the bulges and the lightening holes are distributed in a crossing way.

6. A CNG vehicle type gas cylinder mounting structure according to any one of claims 1 to 5, wherein: the cross beam is provided with a plurality of drain holes and a plurality of reinforcing parts.

7. The CNG vehicle type gas cylinder mounting structure according to claim 6, wherein: the inside of the fixing seat is hollow, and a connecting nut is arranged in the fixing seat and is connected with the connecting plate through bolts.

8. The CNG vehicle type gas cylinder mounting structure according to claim 7, wherein: the fixing part is provided with a plurality of welding edges.