Connecting structure of gas cylinder and gas cylinder frame for LNG (Liquefied Natural Gas) vehicle

Abstract

The utility model discloses a connecting structure of a gas cylinder and a gas cylinder frame for an LNG (Liquefied Natural Gas) vehicle, which is characterized in that arc-shaped base plates attached to a cylinder body are respectively and fixedly arranged at the bottoms of the end parts of two axial sides of the cylinder body of the gas cylinder for the LNG vehicle, and the cylinder body of the gas cylinder for the LNG vehicle is supported on arc-shaped placement openings of two saddles of the gas cylinder frame; the two saddles of the gas cylinder frame correspond to arc-shaped base plates at the ends of the two sides of a gas cylinder body for the LNG vehicle in a one-to-one mode, a connecting plate is correspondingly arranged between each saddle and the corresponding arc-shaped base plate on the same side, and each connecting plate comprises an arc-shaped gas cylinder connecting part and an arc-shaped frame connecting part. The arc-shaped gas cylinder connecting part of each connecting plate is fixedly connected with the corresponding gas cylinder arc-shaped base plate on the same side in a welded mode, and the arc-shaped frame connecting part of each connecting plate is fixedly connected with the corresponding saddle on the same side, so that the gas cylinder for the LNG vehicle is fixedly installed on the gas cylinder frame. The gas cylinder frame has the advantages of light weight and capability of preventing the gas cylinder from rotating relative to the gas cylinder frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of connection structure of LNG vehicle gas cylinder and gas cylinder frame, and specifically relates to a kind of LNG vehicle gas cylinder and gas cylinder frame's connection structure. BACKGROUND

[0002] Natural gas vehicle uses LNG vehicle gas cylinder to store low-temperature liquid natural gas. LNG vehicle gas cylinder needs to be installed on gas cylinder frame during transportation. Currently, the connection structure of LNG vehicle gas cylinder and gas cylinder frame is as follows: the gas cylinder frame includes two oppositely arranged and fixedly connected saddles, the top of each saddle is inwardly recessed to form an arc-shaped installation opening for supporting the LNG vehicle gas cylinder; the bottle body of the LNG vehicle gas cylinder is supported on the arc-shaped installation openings of the two saddles of the gas cylinder frame, a pair of pull straps are provided on each side of the gas cylinder frame, and a pull strap is connected between each pair of pull strap supports and tied around the LNG vehicle gas cylinder. The pull straps are fixed to the pull strap supports by pull strap bolts. The LNG vehicle gas cylinder is tied and fixed to the gas cylinder frame by the two pull straps.

[0003] The current connection structure of LNG vehicle gas cylinder and gas cylinder frame has the following disadvantages: (1) since the bottle body of the LNG vehicle gas cylinder is cylindrical, the LNG vehicle gas cylinder is prone to rotating in the gas cylinder frame during transportation after being tied by the pull straps, which may cause the pull strap bolts to loosen and even cause the LNG vehicle gas cylinder to fall off the gas cylinder frame, affecting the safety in use; (2) the above connection structure requires at least four pull strap supports and two pull straps, and the pull strap supports and pull straps are heavy, increasing the production and use costs of enterprises; (3) the gas cylinder frame is fixed by welding, which is inconvenient to install and operate, affecting the assembly efficiency. SUMMARY

[0004] The utility model aims to provide a connection structure of LNG vehicle gas cylinder and gas cylinder frame, which is light in weight, low in use cost and can prevent the gas cylinder from rotating relative to the gas cylinder frame.

[0005] To achieve the above object, the utility model discloses the following technical scheme: a kind of LNG vehicle gas cylinder and the connecting structure of gas cylinder frame, gas cylinder frame includes: two oppositely arranged and fixedly connected saddles, the top of each saddle is inwardly recessed to form arc-shaped installation port for supporting LNG vehicle gas cylinder;Arc-shaped backing plate is fixedly arranged on the bottom of the both sides end of LNG vehicle gas cylinder bottle body in axial direction respectively and is attached to bottle body, the bottle body of LNG vehicle gas cylinder is supported on the arc-shaped installation port of the two saddles of gas cylinder frame, the two saddles of gas cylinder frame and the arc-shaped backing plate of both sides end of LNG vehicle gas cylinder bottle body one-to-one correspondence, one connecting plate is respectively arranged in each corresponding same side saddle and arc-shaped backing plate, each connecting plate includes an arc-shaped gas cylinder connecting portion and arc-shaped frame connecting portion, the arc-shaped gas cylinder connecting portion of each connecting plate is fixedly connected with the arc-shaped backing plate of corresponding same side, the arc-shaped frame connecting portion of each connecting plate is fixedly connected with the saddle of corresponding same side, so that LNG vehicle gas cylinder is fixedly installed in gas cylinder frame.

[0006] Further, the aforementioned LNG vehicle gas cylinder and the connecting structure of gas cylinder frame, wherein: the ratio of the length of arc-shaped backing plate to the circumference of LNG vehicle gas cylinder bottle body is 0.15-0.16.

[0007] Further, the aforementioned LNG vehicle gas cylinder and the connecting structure of gas cylinder frame, wherein: the specific connecting structure of each connecting plate and same side saddle is: the arc-shaped frame connecting portion of connecting plate is provided with a plurality of first mounting holes along its length direction, a plurality of second mounting holes are provided on the side wall of same side saddle along the edge of arc-shaped installation port, the arc-shaped frame connecting portion of connecting plate is attached to the side wall of saddle at the edge of arc-shaped installation port, each first mounting hole of connecting plate and the second mounting hole of saddle side wall one-to-one correspondence, a first fixing bolt is respectively arranged in each corresponding first mounting hole and second mounting hole, after each first fixing bolt passes through corresponding first mounting hole and second mounting hole, first fixing nut is threadedly connected, each first fixing nut is tightened to make connecting plate detachably fixedly connected with same side saddle.

[0008] Further, the aforementioned LNG vehicle gas cylinder and the connecting structure of gas cylinder frame, wherein: the specific connecting structure of the two saddles of gas cylinder frame is: the upper part between the same side end of the two saddles is connected and fixed by upper crossbeam, the lower part between the same side end of the two saddles is connected and fixed by lower crossbeam.

[0009] Further, the aforementioned LNG vehicle cylinder and cylinder frame connecting structure, wherein: the specific connecting structure of the upper cross beam and the corresponding end portions of the two saddles comprises: a plurality of third mounting holes are arranged at the two ends of the upper cross beam, side turning edges are arranged at the corresponding end portions of the two saddles, a plurality of fourth mounting holes are arranged at the upper portions of the side turning edges of the two saddles, the two ends of the upper cross beam are respectively attached to the upper portions of the side turning edges of the two saddles, and each third mounting hole at the two ends of the upper cross beam corresponds to each fourth mounting hole at the upper portion of the corresponding saddle side turning edge, a second fixing bolt is arranged in each corresponding third mounting hole and fourth mounting hole, and a second fixing nut is threadedly connected to each second fixing bolt after the second fixing bolt passes through the corresponding third mounting hole and fourth mounting hole on the same side, and each second fixing nut is tightened to fixedly connect the upper cross beam to the upper portions of the two saddles.

[0010] Further, the aforementioned LNG vehicle cylinder and cylinder frame connecting structure, wherein: the specific connecting structure of the upper cross beam and the corresponding end portions of the two saddles comprises: a plurality of third mounting holes are arranged at the two ends of the upper cross beam, side turning edges are arranged at the corresponding end portions of the two saddles, a plurality of fourth mounting holes are arranged at the upper portions of the side turning edges of the two saddles, the two ends of the upper cross beam are respectively attached to the upper portions of the side turning edges of the two saddles, and each third mounting hole at the two ends of the upper cross beam corresponds to each fourth mounting hole at the upper portion of the corresponding saddle side turning edge, a second fixing bolt is arranged in each corresponding third mounting hole and fourth mounting hole, and a second fixing nut is threadedly connected to each second fixing bolt after the second fixing bolt passes through the corresponding third mounting hole and fourth mounting hole on the same side, and each second fixing nut is tightened to fixedly connect the upper cross beam to the upper portions of the two saddles.

[0011] Further, the aforementioned LNG vehicle cylinder and cylinder frame connecting structure, wherein: the specific connecting structure of the upper cross beam and the corresponding end portions of the two saddles comprises: a plurality of third mounting holes are arranged at the two ends of the upper cross beam, side turning edges are arranged at the corresponding end portions of the two saddles, a plurality of fourth mounting holes are arranged at the upper portions of the side turning edges of the two saddles, the two ends of the upper cross beam are respectively attached to the upper portions of the side turning edges of the two saddles, and each third mounting hole at the two ends of the upper cross beam corresponds to each fourth mounting hole at the upper portion of the corresponding saddle side turning edge, a second fixing bolt is arranged in each corresponding third mounting hole and fourth mounting hole, and a second fixing nut is threadedly connected to each second fixing bolt after the second fixing bolt passes through the corresponding third mounting hole and fourth mounting hole on the same side, and each second fixing nut is tightened to fixedly connect the upper cross beam to the upper portions of the two saddles.

[0012] Through implementation of the technical scheme, the LNG vehicle gas cylinder can be effectively fixed, the rotation of the gas cylinder relative to the gas cylinder frame is effectively prevented, the safety during vehicle transportation is ensured, and the safety is reliable; (2) the traditional pull belt support and pull belt structure are cancelled, the weight is reduced, the production and use cost of enterprises is reduced, and the light weight requirement of the market is met; (3) all parts of the gas cylinder frame are integrally formed by stamping, and the parts are connected by bolts and nuts, so that the assembly efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Fig. 1 is a structural schematic view of a connection structure of an LNG vehicle gas cylinder and a gas cylinder frame according to the utility model.

[0014] Figure 2 Fig. 2 is a perspective view of the connection structure of the LNG vehicle gas cylinder and the gas cylinder frame. Figure 1

[0015] Figure 3 Fig. 3 is a structural schematic view of the LNG vehicle gas cylinder.

[0016] Figure 4 Fig. 4 is a structural schematic view of the gas cylinder frame.

[0017] Figure 5 Fig. 5 is a top view of the connection structure of the LNG vehicle gas cylinder and the gas cylinder frame. Figure 4

[0018] Figure 6 Fig. 6 is a perspective view of the connection structure of the LNG vehicle gas cylinder and the gas cylinder frame. Figure 4

[0019] Figure 7 Fig. 7 is an enlarged schematic view of the A part shown in Fig. 1. Figure 6

[0020] Figure 8 Fig. 8 is an enlarged schematic view of the B part shown in Fig. 1. Figure 6

[0021] Figure 9 Fig. 9 is an enlarged schematic view of the C part shown in Fig. 1. Figure 6 DETAILED DESCRIPTION In order to make the purpose, technical scheme and advantages of the utility model more clear and understandable, the utility model is further described in detail below by combining with the drawings and examples.

[0022] As ,

[0023] , Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 ​​​​As shown, the LNG vehicle gas cylinder and the gas cylinder frame connecting structure, the gas cylinder frame 100 includes: two oppositely arranged and fixedly connected saddles 1, the top of each saddle 1 is inwardly recessed to form an arc-shaped placement opening 18 for supporting the LNG vehicle gas cylinder 200; the bottom of the two side ends of the LNG vehicle gas cylinder 200 in the axial direction of the bottle body is fixedly provided with an arc-shaped pad plate 2 which is attached to the bottle body, and the length of the arc-shaped pad plate is 0.15-0.16 times the circumference of the LNG vehicle gas cylinder bottle body, and this ratio range can effectively strengthen the strength of the bottle body of the arc-shaped pad plate; the bottle body of the LNG vehicle gas cylinder 200 is supported on the arc-shaped placement openings 18 of the two saddles 1 of the gas cylinder frame 100, and the two saddles 1 of the gas cylinder frame 100 correspond to the arc-shaped pad plates 2 on the two side ends of the bottle body of the LNG vehicle gas cylinder 200, and one connecting plate 3 is arranged between each corresponding same-side saddle 1 and arc-shaped pad plate 2, each connecting plate 3 includes an arc-shaped cylinder connecting portion 31 and an arc-shaped frame connecting portion 32, the arc-shaped cylinder connecting portion 31 of each connecting plate 3 is fixedly connected with the corresponding same-side arc-shaped pad plate 2 by welding, and the arc-shaped frame connecting portion 32 of each connecting plate 3 is fixedly connected with the corresponding same-side saddle 1, so that the LNG vehicle gas cylinder 200 is fixedly installed on the gas cylinder frame 100; in actual installation, the arc-shaped frame connecting portion 32 of each connecting plate 3 and the corresponding same-side saddle 1 can be fixedly connected by welding or detachably fixedly connected by bolts and nuts;

[0024] In the embodiment, each connecting plate 3 and the corresponding same-side saddle 1 are detachably fixedly connected by bolts and nuts, and the specific connecting structure of each connecting plate 3 and the corresponding same-side saddle 1 is that the arc-shaped frame connecting portion 32 of the connecting plate 3 is provided with a plurality of first mounting holes at intervals along the length direction thereof, a plurality of second mounting holes are provided at intervals along the edge of the arc-shaped placement opening on the side wall of the same-side saddle 1, the arc-shaped frame connecting portion 32 of the connecting plate 3 is attached to the side wall of the saddle 1 at the edge of the arc-shaped placement opening, each first mounting hole of the connecting plate 3 and each second mounting hole of the side wall of the saddle 1 correspond to each other, and a first fixing bolt 4 is arranged in each corresponding first mounting hole and second mounting hole, and a first fixing nut 5 is threadedly connected to each first fixing bolt 4 after the first fixing bolt 4 passes through the corresponding first mounting hole and second mounting hole, and each first fixing nut 5 is tightened to detachably fixedly connect the connecting plate 3 to the same-side saddle 1;

[0025] In the embodiment, the specific connecting structure of the two saddles 1 of the gas cylinder frame 100 is that the upper portions of the same-side ends of the two saddles 1 are connected and fixed by an upper cross beam 6, and the lower portions of the same-side ends of the two saddles 1 are connected and fixed by a lower cross beam 7; in the embodiment, the saddles 1, the upper cross beam 6 and the lower cross beam 7 in the gas cylinder frame 100 are integrally stamped and formed by high-pressure steel;

[0026] In the embodiment, the specific connection structure of the upper cross beam 6 and the corresponding end portions of the two saddles 1 comprises that a plurality of third mounting holes are arranged at the two ends of the upper cross beam 6, the side turning edges 8 are arranged at the corresponding end portions of the two saddles 1, a plurality of fourth mounting holes are arranged at the upper portions of the side turning edges 8 of the two saddles 1, the two ends of the upper cross beam 6 are respectively attached to the upper portions of the side turning edges 8 of the two saddles 1, each third mounting hole at the two ends of the upper cross beam 6 corresponds to each fourth mounting hole at the upper portion of the corresponding side turning edge 8 of the saddle, a second fixing bolt 9 is commonly arranged in each corresponding third mounting hole and fourth mounting hole, a second fixing nut 10 is threadedly connected to each second fixing bolt 9 after the second fixing bolt 9 passes through the corresponding third mounting hole and fourth mounting hole at the same side, and each second fixing nut 10 is tightened to fix and connect the upper cross beam 6 to the upper portions of the two saddles 1; when the upper cross beam 6 needs to be disassembled and maintained, each second fixing nut 10 is rotated out of the corresponding second fixing bolt 9, and then the upper cross beam 6 can be easily taken out of the gas cylinder frame 100, and the disassembly and assembly are more convenient.

[0027] In the embodiment, the specific connection structure of the lower cross beam 7 and the corresponding end portions of the two saddles 1 comprises that a connecting vertical portion 11 and a connecting horizontal portion 12 are arranged at the two ends of the lower cross beam 7, a plurality of fifth mounting holes are arranged at the connecting vertical portion 11, a plurality of sixth mounting holes are arranged at the connecting horizontal portion 12, a bottom turning edge 13 is arranged at the corresponding end portion of each of the two saddles 1, a plurality of seventh mounting holes are arranged at the lower portions of the side turning edges 8 of the two saddles 1, a plurality of eighth mounting holes are arranged at the bottom turning edges 13 of the two saddles 1, the connecting vertical portions 11 at the two ends of the lower cross beam 7 are respectively attached to the lower portions of the side turning edges 8 of the two saddles 1, each fifth mounting hole of the connecting vertical portion 11 corresponds to each seventh mounting hole at the lower portion of the corresponding side turning edge 8 of the saddle, a third fixing bolt 14 is commonly arranged in each corresponding fifth mounting hole and seventh mounting hole, a third fixing nut 15 is threadedly connected to each third fixing bolt 14 after the third fixing bolt 14 passes through the corresponding fifth mounting hole and seventh mounting hole at the same side, the connecting horizontal portions 12 at the two ends of the lower cross beam 7 are respectively attached to the bottom turning edges 13 of the two saddles 1, each sixth mounting hole of the connecting horizontal portion 12 corresponds to each eighth mounting hole of the corresponding bottom turning edge 13 of the saddle, a fourth fixing bolt 16 is commonly arranged in each corresponding sixth mounting hole and eighth mounting hole, and a fourth fixing nut 17 is threadedly connected to each fourth fixing bolt 16 after the fourth fixing bolt 16 passes through the corresponding sixth mounting hole and eighth mounting hole at the same side; each third fixing nut 15 and each fourth fixing nut 17 is tightened to fix and connect the lower cross beam 7 to the lower portions of the two saddles 1; when the lower cross beam 7 needs to be disassembled and maintained, each third fixing nut 15 is rotated out of the corresponding third fixing bolt 14, and each fourth fixing nut 17 is rotated out of the corresponding fourth fixing bolt 16, and then the lower cross beam 7 can be easily taken out of the gas cylinder frame 100, and the disassembly and assembly are more convenient.

[0028] When installing, first, the gas cylinder frame 100 is assembled, and the specific assembly process is as follows: first, the upper cross beams 6 are connected to the upper portions of the two saddles 1 through the second fixing bolts 9 and the second fixing nuts 10; then, the lower cross beams 7 are connected to the lower portions of the two saddles 1 through the third fixing bolts 14, the third fixing nuts 15, the fourth fixing bolts 16 and the fourth fixing nuts 17, and the assembly of the gas cylinder frame 100 is completed.

[0029] Then, the two connecting plates 3 are respectively installed in the two arc-shaped installation ports 18 of the gas cylinder frame 100, and the specific installation process is as follows: the arc-shaped frame connecting portions 32 of the connecting plates 3 are attached to the side walls of the saddles 1 at the edges of the arc-shaped installation ports, and the first installation holes of the connecting plates 3 are respectively corresponded to the second installation holes of the side walls of the saddles 1; then, a first fixing bolt 4 is respectively and jointly arranged in each corresponding first installation hole and second installation hole, and after each first fixing bolt 4 passes through the corresponding first installation hole and second installation hole on the same side, a first fixing nut 5 is threadedly connected to the first fixing bolt 4, and each first fixing nut 5 is tightened, so that the connecting plate 3 is fixed to the gas cylinder frame 100.

[0030] Then, the bottle body of the LNG vehicle gas cylinder 200 is supported on the two arc-shaped installation ports 18 of the gas cylinder frame 100, at this time, the two arc-shaped gasket plates 2 at the bottom of the LNG vehicle gas cylinder 200 are respectively placed on the arc-shaped gas cylinder connecting portions 31 of the two connecting plates 3, and then the arc-shaped gas cylinder connecting portions 31 of the connecting plates 3 and the corresponding arc-shaped gasket plates 2 are welded and fixed together, so that the installation and fixation of the LNG vehicle gas cylinder 200 on the gas cylinder frame 100 is completed, and the fixed LNG vehicle gas cylinder 200 cannot rotate in the gas cylinder frame 100, thereby ensuring the safety during vehicle transportation.

[0031] The utility model discloses the advantages are: (1) can effectively fix LNG vehicle gas cylinder, effectively prevent the rotation of gas cylinder relative to gas cylinder frame, ensure the safety during vehicle transportation, safe and reliable, (2) cancel the traditional drawstring support and drawstring structure, i.

[0032] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any other form, and any modification or equivalent change made according to the technical essence of the utility model still belongs to the protection range required by the utility model.

Claims

1. A connecting structure of an LNG vehicle gas cylinder and a gas cylinder frame, characterized in that: The gas cylinder frame comprises two saddle-shaped seats oppositely arranged and fixedly connected, the top of each saddle-shaped seat is inwardly recessed to form an arc-shaped accommodation opening for supporting an LNG vehicle gas cylinder, an arc-shaped pad plate is fixedly arranged on the bottom of each side end of the LNG vehicle gas cylinder along the axial direction of the LNG vehicle gas cylinder, the LNG vehicle gas cylinder is supported on the arc-shaped accommodation openings of the two saddle-shaped seats of the gas cylinder frame, the two saddle-shaped seats of the gas cylinder frame correspond to the arc-shaped pad plates on the two side ends of the LNG vehicle gas cylinder, one connecting plate is correspondingly arranged between each corresponding same-side saddle-shaped seat and arc-shaped pad plate, each connecting plate comprises an arc-shaped gas cylinder connecting portion and an arc-shaped frame connecting portion, the arc-shaped gas cylinder connecting portion of each connecting plate is fixedly connected with the corresponding same-side arc-shaped pad plate by welding, and the arc-shaped frame connecting portion of each connecting plate is fixedly connected with the corresponding same-side saddle-shaped seat, so that the LNG vehicle gas cylinder is fixedly installed on the gas cylinder frame.

2. The connecting structure of the LNG cylinder and the cylinder frame for vehicle according to claim 1, characterized in that: The ratio of the length of the arc-shaped pad plate to the circumference of the LNG vehicle gas cylinder is 0.15-0.

16.

3. The connecting structure of the LNG vehicle cylinder and the cylinder frame according to claim 1, characterized in that: The specific connecting structure of each connecting plate and the same-side saddle-shaped seat comprises that the arc-shaped frame connecting portion of the connecting plate is provided with a plurality of first mounting holes at intervals along the length direction of the arc-shaped frame connecting portion, a plurality of second mounting holes are arranged at intervals along the edge of the arc-shaped accommodation opening on the side wall of the same-side saddle-shaped seat, the arc-shaped frame connecting portion of the connecting plate is attached to the side wall of the saddle-shaped seat at the edge of the arc-shaped accommodation opening, each first mounting hole of the connecting plate corresponds to each second mounting hole of the side wall of the saddle-shaped seat, and a first fixing bolt is threadedly connected in each corresponding first mounting hole and second mounting hole.

4. The connecting structure of the LNG cylinder and the cylinder frame for vehicle according to claim 1, characterized in that: The specific connecting structure of the two saddle-shaped seats of the gas cylinder frame comprises that the upper portions of the same-side ends of the two saddle-shaped seats are fixedly connected by an upper cross beam, and the lower portions of the same-side ends of the two saddle-shaped seats are fixedly connected by a lower cross beam.

5. The LNG vehicle cylinder and cylinder frame connecting structure according to claim 4, characterized in that: The specific connecting structure of the upper cross beam and the corresponding ends of the two saddle-shaped seats comprises that a plurality of third mounting holes are arranged at the two ends of the upper cross beam, side flanges are arranged on the corresponding ends of the two saddle-shaped seats, a plurality of fourth mounting holes are arranged on the upper portions of the side flanges of the two saddle-shaped seats, the two ends of the upper cross beam are attached to the upper portions of the side flanges of the two saddle-shaped seats, each third mounting hole of the two ends of the upper cross beam corresponds to each fourth mounting hole of the upper portion of the corresponding saddle-shaped seat, a second fixing bolt is threadedly connected in each corresponding third mounting hole and fourth mounting hole, and each second fixing bolt is threadedly connected with a second fixing nut after passing through the corresponding third mounting hole and fourth mounting hole, and each second fixing nut is tightened to fixedly connect the upper cross beam and the two saddle-shaped seats.

6. The connecting structure of the LNG cylinder and the cylinder frame for vehicle according to claim 5, characterized in that: The specific connection structure of the lower cross beam and the corresponding ends of the two saddles comprises that a connecting vertical part and a connecting horizontal part are arranged at both ends of the lower cross beam, a plurality of fifth mounting holes are arranged in the connecting vertical part, a plurality of sixth mounting holes are arranged in the connecting horizontal part, a bottom flange is arranged at the corresponding end of each of the two saddles, a plurality of seventh mounting holes are arranged at the lower part of the side flange of each of the two saddles, and a plurality of eighth mounting holes are arranged at the bottom flange of each of the two saddles, the connecting vertical part of each end of the lower cross beam is attached to the lower part of the side flange of each of the two saddles, the fifth mounting hole of the connecting vertical part corresponds to the seventh mounting hole of the corresponding side flange of the saddle one by one, a third fixing bolt is arranged in each of the corresponding fifth mounting hole and seventh mounting hole, the third fixing bolt is threadedly connected with a third fixing nut after passing through the corresponding fifth mounting hole and seventh mounting hole on the same side, the connecting horizontal part of each end of the lower cross beam is attached to the bottom flange of each of the two saddles, the sixth mounting hole of the connecting horizontal part corresponds to the eighth mounting hole of the corresponding bottom flange of the saddle one by one, a fourth fixing bolt is arranged in each of the corresponding sixth mounting hole and eighth mounting hole, and the fourth fixing bolt is threadedly connected with a fourth fixing nut after passing through the corresponding sixth mounting hole and eighth mounting hole on the same side, and each of the third fixing nut and the fourth fixing nut is tightened to fix the lower cross beam to the lower part of the two saddles.

7. The connecting structure of the LNG cylinder and the cylinder frame for vehicle according to claim 4 or 5 or 6, characterized in that: The saddles, the upper cross beam and the lower cross beam in the gas cylinder frame are integrally stamped from high-pressure steel.

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