Vehicle-mounted hydrogen storage bottle frame structure

Abstract

The invention relates to the technical field of vehicle-mounted hydrogen storage cylinder installation, and discloses a vehicle-mounted hydrogen storage cylinder frame structure which comprises a gas cylinder frame, a supporting mechanism is arranged at the bottom of the gas cylinder frame and used for connecting the gas cylinder frame and a chassis girder, and a fixed installation unit and a plurality of movable installation units are sequentially arranged in the gas cylinder frame from bottom to top. The fixed mounting unit is fixedly connected with the gas cylinder frame, the movable mounting unit is detachably connected with the gas cylinder frame, and the fixed mounting unit and the movable mounting unit are both used for fixing gas cylinders. According to the technical scheme, the size and the weight of the gas cylinder frame can be reduced, so that the structure of the gas cylinder frame is more compact, the dynamic performance, the stability and the flexibility of a vehicle are not affected, when a cylinder valve and a tail valve of a gas cylinder are connected, the coaxiality and the size precision of all connecting positions can be conveniently controlled, and the reliability of the vehicle is improved. The first-pass yield of the hydrogen sealing performance is improved; and meanwhile, repair and maintenance are convenient, and the safety in the installation process can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted hydrogen storage cylinder installation technology, specifically to a vehicle-mounted hydrogen storage cylinder frame structure. Background Technology

[0002] With the continuous development of hydrogen energy technology, hydrogen, as a clean energy source, is increasingly widely used in the automotive field. The onboard hydrogen storage tank frame is mounted on the vehicle chassis beam, and its main function is to mount multiple onboard hydrogen tanks onto a trailer, continuously supplying it with the hydrogen fuel required for operation. Currently, the industry generally uses a fully welded tank frame, installing the tanks by side-lifting them. However, existing fully welded side-lifting tank frames have the following problems: First, a single gas cylinder weighs approximately 200 kg and is 2 m long. When installing the cylinder using a side-mounting method, the brackets on the cylinder frame will interfere with the installation, making it inconvenient. Increasing the size of the cylinder frame to facilitate side installation presents the challenge of limited vehicle space, especially as vehicle range requirements increase, with hydrogen cylinder volumes increasing from 200L to 385L, 410L, or even larger, requiring more space for installation. However, increasing the cylinder frame's dimensions cannot meet minimum turning radius and national height restrictions for vehicles. Furthermore, the safety of side-mounting decreases as the number of cylinders increases. For trailers, increased cylinder frame size and weight reduce power performance and alter the truck's center of gravity distribution, raising it and potentially shifting it to one side, significantly reducing vehicle stability. This increases the risk of rollover at high speeds, during sharp turns, or in crosswinds, and also increases the truck's turning radius, severely reducing its maneuverability in narrow roads, curves, or parking areas.

[0003] Secondly, after the hydrogen storage cylinders are installed, all cylinder valves and tail valves need to be connected in series or parallel. The rated hydrogen pressure is 35MPa or 70MPa, and high-strength stainless steel pipes are used for connection. The coaxiality and dimensional accuracy requirements of each connection are extremely high to ensure the first-pass yield of hydrogen sealing during mass production. However, the existing cylinder frames are too large, which brings great difficulties to the precision control of the connections.

[0004] Finally, the existing all-welded gas cylinder frame has poor expandability. Once a certain part is abnormal, it is difficult to repair and maintain, and sometimes it can only be scrapped as a whole, which is not only uneconomical, but also brings a very poor experience to customers. Summary of the Invention

[0005] The present invention aims to provide a vehicle-mounted hydrogen storage cylinder frame structure to reduce the volume and weight of the cylinder frame, making the structure of the cylinder frame more compact, while facilitating maintenance and improving safety.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vehicle-mounted hydrogen storage cylinder frame structure, including a cylinder frame, a support mechanism at the bottom of the cylinder frame, the support mechanism being used to connect the cylinder frame to the chassis beam, and a fixed installation unit and several movable installation units being arranged sequentially from bottom to top inside the cylinder frame, the fixed installation unit being fixedly connected to the cylinder frame, and the movable installation unit being detachably connected to the cylinder frame, both the fixed installation unit and the movable connection unit being used to fix the cylinder.

[0007] The beneficial effects of this solution are as follows: Since the movable installation unit above the fixed installation unit is detachably connected to the gas cylinder frame, the gas cylinder can be installed using a top-mounting method. The specific operation steps are as follows: Step 1: Install the gas cylinder on the fixed installation unit; Step 2: Install the first-layer movable installation unit above the fixed installation unit on the gas cylinder frame; Step 3: Install the gas cylinder on the first-layer movable installation unit using a top-mounting method; Step 4: Repeat steps 2-3 until all gas cylinders are installed.

[0008] The advantages of this technical solution are: since this technical solution can install gas cylinders by top hoisting, there is no need to reserve space for gas cylinder installation on the side, which makes the gas cylinder frame structure more compact. The minimum gap between the gas cylinder and the gas cylinder frame can be as small as 5mm-15mm. Ordinary industrial slings can be used to install the gas cylinder in place, thereby minimizing the size and space of the gas cylinder frame and making it lighter, while also improving the safety of the gas cylinder installation process.

[0009] The cylinder frame using this technical solution secures the cylinders, ensuring that the vehicle's power performance, stability, and maneuverability remain unaffected. When connecting the cylinder valves and tail valves, it facilitates control over the coaxiality and dimensional accuracy of each connection, improving the first-pass yield rate of hydrogen sealing. The movable mounting unit is detachably connected to the cylinder frame. Furthermore, the cylinder frame offers excellent expandability, allowing for convenient maintenance and repair in case of malfunctions, reducing operating costs and enhancing the customer experience.

[0010] Furthermore, the fixed installation unit includes several fixed installation parts, which are spaced apart from each other. Each fixed installation part includes a first bracket and a first M-shaped clamp. The first bracket is fixedly connected to the bottom of the gas cylinder frame. The first bracket has two mounting slots for placing gas cylinders. The depth of the mounting slots is 1 / 3 of the diameter of the gas cylinder. The first M-shaped clamp is located above the first bracket and is detachably connected to the first bracket.

[0011] The beneficial effects of this solution are as follows: Since the No. 1 bracket has two mounting slots, it can simultaneously install two gas cylinders by cooperating with the No. 1 M-type clamp. The structure is also more compact and easier to install, which is conducive to promoting standardized mass production and reducing manufacturing costs.

[0012] Because the depth of the mounting groove is 1 / 3 of the cylinder diameter, the displacement of the cylinder during acceleration or braking is reduced, thus improving the cylinder's stability. Furthermore, the fixed installation unit also includes a positioning pin. A first pin hole is provided on the first bracket along the axial direction of the gas cylinder, and a second pin hole is provided in the middle position of the first M-type clamp. The positioning pin can pass through the first pin hole and the second pin hole to position the first M-type clamp.

[0013] The beneficial effects of this solution are as follows: Existing gas cylinder clustering devices place the cylinders on a bracket and then secure them with locking steel straps. Each locking strap can only secure one cylinder, resulting in a large gap between adjacent cylinders. This directly leads to a significant increase in the volume and weight of the cylinder frame. For trailers, this severely reduces their power performance. Simultaneously, the excessively heavy cylinder frame alters the truck's center of gravity distribution, raising it and potentially shifting it to one side, significantly reducing vehicle stability during driving. This makes the vehicle more prone to rollovers at high speeds, during sharp turns, or in crosswinds. Furthermore, it increases the truck's turning radius, severely reducing its maneuverability in narrow roads, curves, or parking lots. The No. 1 M-type clamp of this technical solution consists of two large semicircles. The middle part is connected to the middle part of the No. 1 bracket through a positioning pin, and its two ends are rigidly connected to the ends of the No. 1 bracket. The No. 1 M-type clamp tightly holds the two gas cylinders on the same layer around the outer surface, forming a rigid body with the No. 1 bracket and the gas cylinder frame, improving the rigidity and strength of the system, effectively suppressing the vibration and displacement of the gas cylinders during vehicle operation, and effectively reducing the risk of pipeline leakage caused by the relative movement of the gas cylinder head and tail.

[0014] Furthermore, the movable installation unit includes several movable installation sections, which are spaced apart from each other. Each movable installation section includes a second bracket and a second M-type clamp. The two ends and the middle of the second bracket are detachably connected to the gas cylinder frame. The second M-type clamp is detachably connected to the second bracket, and the second M-type clamp has the same structure as the first M-type clamp. The second bracket has the same structure as the first bracket.

[0015] The beneficial effects of this solution are as follows: Since both ends and the middle of the No. 2 bracket are detachably connected to the gas cylinder frame, it is convenient to install the gas cylinder by top hoisting; at the same time, it is also convenient to maintain and repair the gas cylinder frame.

[0016] Furthermore, the support mechanism includes a fixed support unit and a movable support unit. The fixed support unit is fixedly connected to the gas cylinder frame, and the movable support unit is detachably connected to the gas cylinder frame. Both the fixed support unit and the movable support unit are straddled and mounted on the chassis beam.

[0017] The beneficial effects of this solution are as follows: In this technical solution, both the fixed support unit and the movable support unit are installed across the chassis beam, rather than stacked on top of the vehicle chassis beam. This installation method reduces the installation height of the gas cylinder frame, thereby lowering the center of gravity of the gas cylinder frame. A lower center of gravity reduces the risk of vehicle rollover, thus improving vehicle safety.

[0018] In this technical solution, the movable support unit and the gas cylinder frame are detachably connected. Based on this characteristic, the distance between the fixed support unit and the movable support unit can be adjusted until it matches the spacing of the vehicle chassis beams. This increases the distance between the gravity support points of the gas cylinder frame and the vehicle chassis beams, an effect equivalent to widening the wheelbase. A wider wheelbase reduces the risk of rollover during cornering, thus improving vehicle safety.

[0019] Furthermore, the fixed support unit includes a No. 1 U-shaped secondary beam and a No. 1 bottom longitudinal beam. The No. 1 bottom longitudinal beam is fixedly connected to the bottom of the gas cylinder frame and can contact the chassis main beam. The No. 1 U-shaped secondary beam is fixedly connected to the No. 1 bottom longitudinal beam and the bottom of the gas cylinder frame. The No. 1 U-shaped secondary beam is detachably connected to the chassis main beam.

[0020] The beneficial effects of this solution are as follows: In this technical solution, due to the setting of the No. 1 U-shaped sub-beam and the No. 1 bottom longitudinal beam, the weight of the gas cylinder and the gas cylinder frame can be transferred to the chassis beam through the No. 1 U-shaped sub-beam and the No. 1 bottom longitudinal beam, thereby ensuring the stability of the gas cylinder during driving.

[0021] Furthermore, the mobile support unit includes a second U-shaped sub-beam and a second bottom longitudinal beam. The second bottom longitudinal beam is detachably connected to the bottom of the gas cylinder frame, and the second bottom longitudinal beam can also contact the chassis beam. The second U-shaped sub-beam is used to connect the gas cylinder frame and the chassis beam, and the second U-shaped sub-beam is detachably connected to both the gas cylinder frame and the chassis beam.

[0022] The beneficial effects of this solution are as follows: In this technical solution, since both the No. 2 U-shaped sub-beam and the No. 2 bottom longitudinal beam are detachably connected to the gas cylinder frame, it is easy to adjust the distance between the No. 2 U-shaped sub-beam and the No. 1 U-shaped sub-beam. This increases the distance between the gas cylinder frame and the gravity support points of the vehicle chassis beam, thereby reducing the risk of vehicle rollover during cornering and improving vehicle safety.

[0023] Furthermore, spacers of different heights are provided between bracket number two and the gas cylinder frame.

[0024] The beneficial effects of this solution are as follows: By setting shims of different heights between the No. 2 bracket and the gas cylinder frame, the position of the No. 2 bracket in the height, front-back, and left-right directions can be easily adjusted, thereby adjusting the precise position of the cylinder valve and tail valve, ensuring that each connection has good coaxiality and dimensional accuracy to meet the airtightness requirements.

[0025] Furthermore, two lateral longitudinal beams are fixedly connected to the front and rear sides of the gas cylinder frame. The two lateral longitudinal beams are arranged in a figure-eight shape on the gas cylinder frame and form an isosceles trapezoid with the upper and lower edges of the gas cylinder frame.

[0026] The beneficial effects of this solution are as follows: In this technical solution, by setting the two lateral longitudinal beams in a figure-eight shape, the lateral force borne by the gas cylinder frame can be dispersed, thereby improving the stability of the gas cylinder frame.

[0027] Furthermore, the top of the gas cylinder frame is detachably connected to several top longitudinal beams. The beneficial effects of this solution are as follows: In this technical solution, the top longitudinal beam is detachably connected to the top of the gas cylinder frame. On the one hand, this facilitates the hoisting of the gas cylinder, and on the other hand, it can enhance the strength of the gas cylinder frame, thereby improving the stability of the gas cylinder frame. Attached Figure Description

[0028] Figure 1 This is a three-dimensional diagram of a vehicle-mounted hydrogen storage cylinder frame structure according to the present invention; Figure 2 This is a three-dimensional view of the fixed mounting unit of the present invention; Figure 3 This is a three-dimensional view of the M-type clamp of the present invention; Figure 4 This is a three-dimensional view of the active installation unit of the present invention; Figure 5 This is a three-dimensional view of the gas cylinder of the present invention mounted on the gas cylinder frame; Figure 6 This is a three-dimensional view of the movable support unit of the present invention. Detailed Implementation

[0029] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings of the instruction manual include: 1. Gas cylinder frame; 2. Chassis beam; 3. Bracket No. 1; 4. Positioning pin; 5. Locking nut; 6. Mounting groove; 7. M-type clamp No. 1; 8. Pin hole No. 2; 9. Clamp bolt; 10. Bracket No. 2; 11. M-type clamp No. 2; 12. Side longitudinal beam; 13. Top longitudinal beam; 14. Reinforcing beam No. 2; 15. U-shaped sub-beam No. 1; 16. Bottom longitudinal beam No. 1; 17. Inner reinforcing plate No. 1; 18. Diagonal support rod No. 1; 19. Inner reinforcing plate No. 2; 20. U-shaped sub-beam No. 2; 21. Bottom longitudinal beam No. 2; 22. Locking bolt; 23. Inner reinforcing plate No. 3; 24. Diagonal support rod No. 3; 25. Inner reinforcing plate No. 4; 26. Diagonal support rod No. 4; 27. Reinforcing beam No. 1; 28. Gas cylinder; 29.

[0030] Example like Figure 1 The illustrated vehicle-mounted hydrogen storage cylinder frame structure includes a cylinder frame 1. The bottom of the cylinder frame 1 is provided with a support mechanism for connecting the cylinder frame 1 to the chassis beam 2. Inside the cylinder frame 1, from bottom to top, there are fixed mounting units and three movable mounting units. The fixed mounting units are fixedly connected to the cylinder frame 1, and the movable mounting units are detachably connected to the cylinder frame 1. Both the fixed mounting units and the movable mounting units are used to fix the cylinder 29.

[0031] like Figure 2-3 As shown, the fixed installation unit includes two fixed installation parts, which are spaced apart. Each fixed installation part includes a first bracket 3, a positioning pin 4, and a locking nut 5. The first bracket 3 is welded to the bottom of the gas cylinder frame 1, and its upper side has two mounting grooves 6 for placing gas cylinders 29. The depth of the mounting grooves 6 is 1 / 3 of the diameter of the gas cylinder 29. A first pin hole is opened on the right side of the first bracket 3, extending to the left side. A first M-type clamp 7 is detachably connected above the first bracket 3, and a second pin hole 8 is opened in the middle of the first M-type clamp 7. The positioning pin 4 can pass through the first pin hole and the second pin hole 8 to position the first M-type clamp 7. Cotter pins are installed at both ends of the positioning pin 4 to prevent it from falling off. Clamp bolts 9 are welded to the front and rear sides of the first M-type clamp 7. At the same time, connecting holes are opened on the upper sides of the front and rear ends of the first bracket 3. The clamp bolts 9 pass through the connecting holes and are threadedly connected to the locking nut 5.

[0032] like Figure 4As shown, the movable installation unit includes two movable installation sections spaced apart. Each movable installation section includes a second bracket 10 and a second M-type clamp 11. The two ends and the middle of the second bracket 10 are bolted to the gas cylinder frame 1. This bolted installation method distributes the stress points more evenly, effectively reducing stress concentration problems associated with traditional welding methods. This installation method makes it possible to achieve weight reduction using thinner materials. The structure of the second bracket 10 is the same as that of the first bracket 3, and the structure of the second M-type clamp 11 is the same as that of the first M-type clamp 7. Furthermore, the connection and positioning methods of the second M-type clamp 11 and the second bracket 10 are the same as those of the first M-type clamp 7 and the first bracket 3. Rubber buffer pads are installed between the gas cylinder 29 and the first bracket 3 and the first M-type clamp 7. Similarly, rubber buffer pads are also installed between the gas cylinder 29 and the second bracket 10 and the second M-type clamp 11. The rubber pads compensate for diameter changes in the gas cylinder 29 caused by variations in air pressure and temperature, reducing the risk of the gas cylinder 29 becoming loose due to vibrations during vehicle operation. Depending on actual needs, shims of different heights can be installed between the second bracket 10 and the gas cylinder frame 1. This allows for easy adjustment of the second bracket 10's position in height, front-to-back, and left-to-right directions, thereby adjusting the precise positions of the cylinder valve and tail valve. This ensures good coaxiality and dimensional accuracy at all connections to meet airtightness requirements.

[0033] like Figure 1 As shown, two lateral longitudinal beams 12 are welded to the front and rear sides of the gas cylinder frame 1. The two lateral longitudinal beams 12 are arranged in a V-shape on the gas cylinder frame 1, forming an isosceles trapezoid together with the upper and lower edges of the gas cylinder frame 1. By arranging the two lateral longitudinal beams 12 in a V-shape, the lateral forces borne by the gas cylinder frame 1 can be dispersed, thereby improving the stability of the gas cylinder frame 1. Four inclined No. 1 reinforcing beams 28 are welded between the two lateral longitudinal beams 12. The inclination directions of adjacent No. 1 reinforcing beams 28 are opposite. The No. 1 reinforcing beams 28, together with the lateral longitudinal beams 12 and the gas cylinder frame 1, form a complementary trapezoid. By setting the No. 1 reinforcing beams 28, the lateral forces borne by the gas cylinder frame 1 can be dispersed, and weld concentration can be avoided, thus preventing a decrease in the mechanical properties of the gas cylinder frame 1. Simultaneously, it facilitates the installation of the movable mounting unit. Four top longitudinal beams 13 are bolted to the top of the gas cylinder frame 1. A second reinforcing beam 14 is welded between the gas cylinder frame 1 and the lateral longitudinal beam 12.

[0034] like Figure 1As shown, the support mechanism includes a fixed support unit and a movable support unit. The fixed support unit is located to the left of the movable support unit and is fixedly connected to the gas cylinder frame 1. The movable support unit is detachably connected to the gas cylinder frame 1. Both the fixed support unit and the movable support unit are straddling the chassis beam 2. The two fixed mounting parts are located directly above the fixed support unit and the movable support unit, respectively. Since the installation position of the movable support unit is adjustable, and the two fixed mounting parts are located directly above the fixed support unit and the movable support unit, the distance between the two fixed mounting parts is increased, the lever arm of the gas cylinder 29 fixing point is increased, the risk of the gas cylinder 29 sliding when turning is reduced, and the positional error of the cylinder valve and the tail valve is also reduced, ensuring the coaxiality and dimensional accuracy of each connection of the pipeline system and ensuring the airtightness requirements.

[0035] like Figure 1 and Figure 5 As shown, the fixed support unit includes a No. 1 U-shaped sub-beam 15 and two No. 1 bottom longitudinal beams 16. The No. 1 bottom longitudinal beams 16 are welded to the bottom of the gas cylinder frame 1 and can contact the chassis beam 2. The No. 1 U-shaped sub-beam 15 is welded to the No. 1 bottom longitudinal beams 16 and the bottom of the gas cylinder frame 1, and is connected to the chassis beam 2 by bolts. The lateral longitudinal beam 12 above the No. 1 U-shaped sub-beam 15 passes through the top of the No. 1 U-shaped sub-beam 15 and is welded inside the No. 1 U-shaped sub-beam 15. A No. 1 inner reinforcing plate 17 is welded on the No. 1 U-shaped sub-beam 15 between the two lateral longitudinal beams 12. A No. 1 inclined support rod 18 is welded on the left side of both the No. 1 inner reinforcing plate 17 and the lateral longitudinal beam 12. The upper end of the No. 1 inclined support rod 18 is welded to the bottom of the gas cylinder frame 1. A No. 2 inner reinforcing plate 19 is welded to both the front and rear ends of the No. 1 U-shaped sub-beam 15. A No. 2 inclined support rod 20 is welded to both the front and rear sides of the top of the No. 1 U-shaped sub-beam 15. The upper end of the No. 2 inclined support rod 20 is welded to the side of the gas cylinder frame 1.

[0036] like Figure 6As shown, the mobile support unit includes a second U-shaped sub-beam 21, a second bottom longitudinal beam 22, and locking bolts 23. The second bottom longitudinal beam 22 is installed at the bottom of the gas cylinder frame 1 by bolts, and the second bottom longitudinal beam 22 can also contact the chassis beam 2. The second U-shaped sub-beam 21 is used to connect the gas cylinder frame 1 and the chassis beam 2, and the second U-shaped sub-beam 21 is detachably connected to both the gas cylinder frame 1 and the chassis beam 2. Specifically, the top of the second U-shaped sub-beam 21 has several waist-shaped holes. The locking bolts 23 pass through the waist-shaped holes to install the second U-shaped sub-beam 21 onto the gas cylinder frame 1. Three No. 3 inner reinforcing plates 24 are welded to the right side of the second U-shaped sub-beam 21. Each No. 3 inner reinforcing plate 24 has a No. 3 diagonal support rod 25 welded to the right side. The upper end of the No. 3 diagonal support rod 25 is bolted to the bottom of the gas cylinder frame 1. No. 4 inner reinforcing plates 26 are welded to the front and rear ends of the right side of the second U-shaped sub-beam 21. No. 4 diagonal support rods 27 are welded to the front and rear ends of the upper side of the second U-shaped sub-beam 21. The upper end of the No. 4 diagonal support rods 27 is bolted to the side of the gas cylinder frame 1. The second U-shaped sub-beam 21 is bolted to the chassis beam 2. Because the fixed support unit is welded to the gas cylinder frame 1, the movable support unit is bolted to the gas cylinder frame 1 in the XYZ directions. A slotted hole design is used in the width direction of the vehicle chassis beam 2 to ensure greater adjustability and ensure assemblability with the vehicle. Traditional all-welded methods are non-adjustable and require high precision in manufacturing. —Lightweight, fewer bolts, and a more stable overall frame.

[0037] The specific implementation process is as follows: The assembly process of the support mechanism is as follows: First, adjust the installation plane distance between the No. 1 U-shaped sub-beam 15 and the No. 2 U-shaped sub-beam 21 to its maximum. This adjustment value is determined by the waist-shaped hole on the No. 2 U-shaped sub-beam 21. During hoisting, after the gas cylinder frame 1 is positioned above the vehicle beam, lower it slowly until the No. 1 bottom longitudinal beam 16, the No. 2 bottom longitudinal beam 22, and the gas cylinder frame 1 are completely placed on the chassis beam 2. After the No. 1 U-shaped sub-beam 15 and the hole on the chassis beam 2 are basically aligned, use bolts to install the No. 1 U-shaped sub-beam 15 on the chassis beam 2, achieving a completely rigid connection between the No. 1 U-shaped sub-beam 15 and the chassis beam 2. Next, adjust the No. 2 U-shaped sub-beam 21 to be basically aligned with the hole on the chassis beam 2, and then use bolts to install the No. 2 U-shaped sub-beam 21 on the chassis beam 2, achieving a completely rigid connection between the No. 2 U-shaped sub-beam 21 and the chassis beam 2. Next, tighten the locking bolt 23, install the second U-shaped sub-beam 21 on the gas cylinder frame 1, then use bolts to install the fourth inclined support rod 27 on the side of the gas cylinder frame 1, and use bolts to install the third inclined support rod 25 at the bottom of the gas cylinder frame 1, thereby achieving a completely rigid connection between the second U-shaped sub-beam 21 and the gas cylinder frame 1.

[0038] The assembly process of the gas cylinder is as follows: Step 1: Install the gas cylinder on the fixed installation unit. Specifically, hoist the gas cylinder 29 from the top of the gas cylinder frame 1 and place it on the first bracket 3. Then install the first M-type clamp 7. Align the second pin hole 8 with the first pin hole, insert the positioning pin 4, and install cotter pins at both ends of the positioning pin 4 to prevent it from falling off. After the gas cylinder 29 is placed in the correct position, tighten the locking nut 5 to secure the gas cylinder 29 in place. Step 2: Install the movable installation unit on the first layer above the fixed installation unit onto the gas cylinder 29 frame 1. Specifically, install the two ends and the middle of the second bracket 10 onto the gas cylinder frame 1 with bolts. Step 3: Install the gas cylinder 29 on the movable installation unit on the first layer above the fixed installation unit; specifically, hoist it from the top of the gas cylinder frame 1, place the gas cylinder 29 on the second bracket 10, and then install the second M-type clamp 11 to secure the gas cylinder 29 in place.

[0039] Step 4: Repeat steps 2-3 until gas cylinder 29 is assembled; Step 5: Install the top longitudinal beam 13 onto the gas cylinder frame 1 using bolts.

[0040] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A vehicle-mounted hydrogen storage bottle frame structure, characterized in that: It includes a gas cylinder frame, a supporting mechanism is provided at the bottom of the gas cylinder frame, the supporting mechanism is used to connect the gas cylinder frame and the chassis beam, and a fixed installation unit and a plurality of movable installation units are arranged in sequence from bottom to top inside the gas cylinder frame, the fixed installation unit is fixedly connected to the gas cylinder frame, and the movable installation unit is detachably connected to the gas cylinder frame, and both the fixed installation unit and the movable connection unit are used to fix the gas cylinder.

2. The vehicle-mounted hydrogen storage bottle frame structure according to claim 1 is characterized in that: The fixed installation unit includes a plurality of fixed installation parts, and adjacent fixed installation parts are arranged at intervals. Each fixed installation part includes a No. 1 bracket and a No. 1 M-type clamp. The No. 1 bracket is fixedly connected to the bottom of the gas cylinder frame. The No. 1 bracket is provided with two mounting grooves for placing the gas cylinder. The depth of the mounting groove is 1 / 3 of the diameter of the gas cylinder. The No. 1 M-type clamp is arranged above the No. 1 bracket and is detachably connected to the No. 1 bracket.

3. The vehicle-mounted hydrogen storage bottle frame structure according to claim 2 is characterized in that: The fixed installation unit also includes a positioning pin. A No. 1 pin hole is provided on the No. 1 bracket along the axial direction of the gas cylinder. A No. 2 pin hole is provided in the middle position of the No. 1 M-type clamp. The positioning pin can pass through the No. 1 pin hole and the No. 2 pin hole to position the No. 1 M-type clamp.

4. The vehicle-mounted hydrogen storage bottle frame structure according to claim 3 is characterized in that: The movable mounting unit includes a plurality of movable mounting parts, adjacent movable mounting parts are arranged at intervals, each movable mounting part includes a No. 2 bracket and a No. 2 M-type clamp, both ends and the middle part of the No. 2 bracket are detachably connected to the gas cylinder frame, the No. 2 M-type clamp is detachably connected to the No. 2 bracket, and the No. 2 M-type clamp has the same structure as the No. 1 M-type clamp, and the No. 2 bracket has the same structure as the No. 1 bracket.

5. The vehicle-mounted hydrogen storage bottle frame structure according to claim 4 is characterized in that: The supporting mechanism comprises a fixed supporting unit and a movable supporting unit. The fixed supporting unit is fixedly connected to the gas cylinder frame, the movable supporting unit is detachably connected to the gas cylinder frame, and both the fixed supporting unit and the movable supporting unit are straddled and mounted on the chassis beam.

6. The vehicle-mounted hydrogen storage bottle frame structure according to claim 5 is characterized in that: The fixed support unit includes a No. 1 U-shaped sub-beam and a No. 1 bottom longitudinal beam. The No. 1 bottom longitudinal beam is fixedly connected to the bottom of the gas cylinder frame, and the No. 1 bottom longitudinal beam can contact the chassis frame. The No. 1 U-shaped sub-beam is fixedly connected to the bottom of the No. 1 bottom longitudinal beam and the gas cylinder frame, and the No. 1 U-shaped sub-beam is detachably connected to the chassis frame.

7. The vehicle-mounted hydrogen storage bottle frame structure according to claim 6 is characterized in that: The mobile support unit includes a No. 2 U-shaped subbeam and a No. 2 bottom longitudinal beam. The No. 2 bottom longitudinal beam is detachably connected to the bottom of the gas cylinder frame, and the No. 2 bottom longitudinal beam can also contact the chassis frame. The No. 2 U-shaped subbeam is used to connect the gas cylinder frame and the chassis frame, and the No. 2 U-shaped subbeam is detachably connected to the gas cylinder frame and the chassis frame.

8. The vehicle-mounted hydrogen storage bottle frame structure according to claim 7 is characterized in that: Spacers of different heights are provided between the No. 2 bracket and the gas cylinder frame.

9. The vehicle-mounted hydrogen storage bottle frame structure according to claim 8 is characterized in that: Two lateral longitudinal beams are fixedly connected to the front and rear sides of the gas cylinder frame. The two lateral longitudinal beams are arranged on the gas cylinder frame in an eight-shaped shape and form an isosceles trapezoid with the upper and lower frames of the gas cylinder frame.

10. The vehicle-mounted hydrogen storage bottle frame structure according to claim 9, characterized in that: The top of the gas cylinder frame is detachably connected with a plurality of top longitudinal beams.

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