A vehicle-mounted hydrogen frame variable structure protective device and a method for changing the protective structure.

Abstract

This invention relates to the field of hydrogen fuel cell vehicles, and more particularly to a vehicle-mounted hydrogen tank variable structure protective device and a method for changing the protective structure, comprising: a mounting frame having upper and lower layers; a mounting assembly for mounting a hydrogen tank to install the hydrogen tank within the mounting frame; and four swing arms located on the left and right sides of the mounting frame, with the top of each swing arm rotatably connected to the side wall of the mounting frame, and the bottom of each swing arm having a first guide rail. This invention, by setting up a first sealing plate, a second sealing plate, swing arms, and a fixing arm, allows the first and second sealing plates to be folded together vertically, thereby saving space. This reduces the space occupied during the flipping process, preventing operation in confined spaces, and also avoids safety hazards to following vehicles.

Description

Technical Field

[0001] This invention relates to the field of hydrogen fuel cell vehicles, and more particularly to an on-board hydrogen frame variable structure protection device and a method for changing the protection structure. Background Technology

[0002] As society continues to develop, people's demands for environmental protection are increasing, especially in the automotive sector. Hydrogen fuel cell vehicles are favored by people because they produce no pollution. As the name suggests, hydrogen fuel cell vehicles use hydrogen gas, which is stored in hydrogen cylinders. These cylinders need to be fixed inside the hydrogen fuel cell vehicle, usually using a hydrogen cylinder frame for secure installation.

[0003] For example, the invention patent with application number CN202111123410.1 discloses a chassis layout structure and a hydrogen fuel cell tractor, which includes: a frame, the frame including a first beam and a second beam arranged in parallel; a cab, which is fixed above the frame; a fuel cell engine, which is located between the first beam and the second beam and arranged below the cab; and a hydrogen storage system, which is fixed above the frame and arranged behind the cab, and a high-pressure accessory is arranged at the bottom of the hydrogen storage system.

[0004] In the prior art, in order to prevent hydrogen tanks from being damaged by external objects, protective plates are usually installed at both ends of the frame to seal the hydrogen tanks for storage. However, during the later maintenance of hydrogen cylinders, maintenance personnel need to disassemble and install the protective plates. If the installation method is welding, the protective plates cannot be disassembled, which increases the difficulty of maintenance.

[0005] To address these issues, this invention proposes a vehicle-mounted hydrogen frame variable structure protection device and a method for changing the protection structure. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vehicle-mounted hydrogen frame variable structure protection device and a method for changing the protection structure.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a vehicle-mounted hydrogen frame variable structure protection device, comprising:

[0008] The mounting frame has two layers, upper and lower.

[0009] Mounting components are used to mount hydrogen tanks to install them within a mounting frame.

[0010] Four swing arms are located on the left and right sides of the mounting frame, respectively. The top of each swing arm is rotatably connected to the side wall of the mounting frame, and the bottom of each swing arm has a first guide rail.

[0011] Four fixed arms and four swing arms are respectively located on the left and right sides of the mounting frame. The fixed arms are fixedly connected to the side wall of the mounting frame. The top of the fixed arm has a second guide rail, and the top of the fixed arm is in contact with the bottom of the swing arm.

[0012] Two first sealing plates are symmetrically located on the upper layer of the mounting frame. The two sides of the first sealing plates are fixedly connected to the swing arms so that the first sealing plates move together with the swing arms.

[0013] Two second sealing plates are symmetrically located on the lower layer of the mounting frame, and the two sides of the second sealing plates are slidably connected to the inner rails of the swing arm and the fixed arm through sliding components;

[0014] The traction assembly is used to pull the second sealing plate to move it upward until it disengages from the fixed arm. Under the action of the traction assembly, the swing arm drives the second sealing plate to flip.

[0015] Preferably, the sliding component includes:

[0016] Two upper rollers are symmetrically rotatably connected to the two side walls near the top of the second sealing plate, and the upper rollers are slidably connected inside the swing arm;

[0017] Two lower rollers are symmetrically rotatably connected to the two side walls near the bottom of the second sealing plate, and the lower rollers are slidably connected inside the fixed arm.

[0018] Preferred options also include:

[0019] A limiting component, wherein the limiting component is used to limit the lower roller entering the swing arm, the limiting component includes:

[0020] A rotating shaft is rotatably connected to the inner wall near the bottom end of the swing arm;

[0021] A rotary valve, which is fixedly connected to the surface of the rotating shaft;

[0022] A torsion spring, one end of which is fixedly connected to the inner arm of the swing arm, and the other end of which is fixedly connected to the rotary valve;

[0023] A slide guide block is fixedly connected to the top of the fixed arm to push the rotary valve so that the rotary valve rotates.

[0024] Preferably, the mounting components include:

[0025] Four sliding seats, two of which are symmetrically arranged on the upper layer of the mounting frame, and the other two are symmetrically arranged on the lower layer of the mounting frame;

[0026] A ring-shaped mounting bracket is disposed within the sliding seat, and an arc-shaped groove is provided at the top of the ring-shaped mounting bracket;

[0027] A hydraulic cylinder is fixedly connected in the arc-shaped slide groove, and an arc-shaped fastening plate is fixedly connected to the bottom end of the telescopic rod of the hydraulic cylinder.

[0028] The detection mechanism is used to detect the sealing information on the left and right sides of the mounting frame. When the two sides of the mounting frame are not sealed, the arc-shaped fastening plate is away from the hydrogen tank so that the hydrogen tank can be placed in the two annular mounting brackets. When the two sides of the mounting frame are sealed, the fastening mechanism is activated to fasten the hydrogen tank to the annular mounting brackets.

[0029] The testing institutions include:

[0030] Two arc-shaped trigger blocks are symmetrically distributed on the left and right sides of the mounting frame, and the arc-shaped trigger blocks are coaxially fixed with the swing arms at the corresponding positions;

[0031] Two pressure sensors are fixedly connected to the side wall of the mounting frame at positions corresponding to the arc-shaped trigger block.

[0032] Preferably, the sliding seat is slidably connected to the mounting frame, and the annular mounting bracket is rotatably connected inside the sliding seat;

[0033] Each layer of the mounting frame is fixedly connected to a push cylinder on both the left and right sides, and the end of the extension rod of the push cylinder is fixedly connected to a sliding seat at the corresponding position.

[0034] Preferred options also include:

[0035] A drive gear is symmetrically rotatably connected to the side wall of the mounting frame;

[0036] A ring rack is fixedly connected to the surface of the ring mounting bracket and meshes with the drive gear.

[0037] A lead screw is rotatably connected within the mounting frame, slidably connected to two sliding seats, and threadedly connected to a drive gear.

[0038] Preferably, the traction assembly includes:

[0039] A pneumatic motor, which is fixed to the top of the mounting frame;

[0040] A winch, wherein the winch is fixed coaxially with the output shaft of a pneumatic motor;

[0041] A steel wire rope, one end of which is wound around a winch and the other end is rotatably connected to a second sealing plate.

[0042] To address the above problems, this invention also proposes a protection method for an on-board hydrogen shield structure, which further includes:

[0043] The controller is mounted on the mounting frame;

[0044] The protective methods of this protective structure include:

[0045] The controller receives a first request message sent by the pressure sensor based on pressure parameters;

[0046] The controller generates first control information and second control information based on the first request information. The first control information is used to control the hydraulic cylinder on the same side as the pressure sensor to start, and the second control information is used to control the push cylinder on the opposite side of the pressure sensor to start.

[0047] The controller sends the first control information and the second control information to the hydraulic cylinder and the push cylinder. First, the extension rod of the hydraulic cylinder pulls the arc-shaped fastening plate, and then the push cylinder pushes the sliding seat so that the hydrogen tank moves to the side of the mounting frame that is not sealed.

[0048] When maintenance is required on one side of the hydrogen tank, the pneumatic motor at the corresponding position is activated, causing the swing arm to rotate. This causes the arc-shaped trigger block to actuate the pressure sensor, increasing the pressure parameter of the sensor. The pressure sensor generates a first request message and sends it to the controller. The controller then generates first and second control messages and sends them to the hydraulic cylinder on the same side and the push cylinder on the other side. After receiving the first control message, the hydraulic cylinder's extension rod pulls the arc-shaped fastening plate. After receiving the second control message, the push cylinder pushes the sliding seat, causing the hydrogen tank to move towards the unsealed side of the mounting frame. This allows the end of the hydrogen tank to extend out of the mounting frame, increasing the maintenance space and facilitating maintenance personnel to repair the end of the hydrogen tank. It also exposes the part of the hydrogen tank that was originally inside the annular mounting frame, allowing maintenance personnel to observe the entire hydrogen tank.

[0049] After maintenance, the swing arm rotates to reset, causing the arc-shaped trigger block to disengage from the pressure sensor, restoring the pressure sensor's reading. The pressure sensor generates a second request message and sends the first request message to the controller, causing the controller to generate third and fourth control messages. These messages are then sent to the hydraulic cylinder on one side and the push cylinder on the other side. Upon receiving the third control message, the push cylinder pulls the sliding seat, moving the hydrogen tank away from the mounting frame and onto the sealed side, thus resetting the hydrogen tank. Upon receiving the fourth control message, the hydraulic cylinder's extension rod pushes the arc-shaped fastening plate to secure the hydrogen tank, ensuring its stability.

[0050] Specifically, it also includes:

[0051] The pressure sensor generates a first request message based on an increase in the pressure parameter.

[0052] The pressure sensor sends a first request to the controller, requesting the controller to generate first and second control information.

[0053] Specifically, it also includes:

[0054] After receiving the first control information, the hydraulic cylinder starts, causing the extension rod of the hydraulic cylinder to pull the arc-shaped fastening plate.

[0055] The cylinder receives the second control information, causing the hydrogen tank to move toward the side of the mounting frame that is not sealed.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] This invention, by setting up a first sealing plate, a second sealing plate, a swing arm, and a fixed arm, allows the first and second sealing plates to be folded together vertically, thereby saving space. On the one hand, it reduces the space occupied during the flipping process, avoiding the inability to operate in confined spaces; on the other hand, it helps to avoid safety hazards to vehicles passing behind.

[0058] This invention, by incorporating a hydraulic cylinder, an arc-shaped fastening plate, and a pushing cylinder, allows for the following mechanism: When maintenance is required on one side of the hydrogen tank, the first and second sealing plates at corresponding positions are first moved away from the mounting frame. Then, the hydraulic cylinder on the same side is activated, causing its extension rod to pull the arc-shaped fastening plate, thus releasing the fastening on the left side of the hydrogen tank. Next, the pushing cylinder is activated, moving the hydrogen tank towards the unsealed side of the mounting frame. This allows the end of the hydrogen tank to extend out from within the mounting frame, increasing the maintenance space and facilitating repairs. Furthermore, it exposes the portion of the hydrogen tank that was originally within the annular mounting frame, allowing maintenance personnel to observe the entire hydrogen tank.

[0059] This invention, by setting a drive gear and an annular rack, allows the drive gear to slide along the surface of the lead screw during the process of pushing the sliding seat with the cylinder. Under the action of the threaded connection, the drive gear rotates, and under the action of meshing, the drive rack drives the annular mounting bracket to rotate, thereby making the hydrogen tank rotate, reducing visual interference, and facilitating maintenance personnel to fully inspect the surface of the hydrogen tank. Attached Figure Description

[0060] Figure 1 This is a flowchart of the protection method of the present invention;

[0061] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0062] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0063] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0064] Figure 5 for Figure 3 Enlarged view at point B in the middle;

[0065] Figure 6 This is a connection diagram of the hydrogen tank and the annular mounting bracket in this invention;

[0066] Figure 7 This is a cross-sectional view of the annular mounting bracket in this invention;

[0067] Figure 8 This is a connection diagram of the pneumatic motor, winch, and wire rope in this invention;

[0068] Figure 9 This is a connection diagram of the first sealing plate and the second sealing plate in this invention;

[0069] Figure 10 This is a connection diagram of the swing arm and the fixed arm in this invention;

[0070] Figure 11 for Figure 10 Enlarged view at point C;

[0071] Figure 12 This is a connection diagram of the fixed arm and the slide guide block in this invention;

[0072] Figure 13 This is a flowchart illustrating the method of using the pressure sensor in this invention;

[0073] Figure 14 This is a flowchart illustrating the usage of the hydraulic cylinder and the push cylinder in this invention.

[0074] In the diagram: 1. Mounting frame; 2. Controller; 3. Hydrogen tank; 4. Swing arm; 5. First guide rail; 6. Fixed arm; 7. Second guide rail; 8. First sealing plate; 9. Second sealing plate; 10. Upper roller; 11. Lower roller; 12. Rotary shaft; 13. Rotary valve; 14. Torsion spring; 15. Slide guide block; 16. Sliding seat; 17. Annular mounting bracket; 18. Arc-shaped slide groove; 19. Hydraulic cylinder; 20. Arc-shaped fastening plate; 21. Arc-shaped trigger block; 22. Pressure sensor; 23. Push cylinder; 24. Drive gear; 25. Annular rack; 26. Lead screw; 27. Pneumatic motor; 28. Winch; 29. ​​Wire rope. Detailed Implementation

[0075] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0076] like Figures 2 to 12 The vehicle-mounted hydrogen frame variable structure protective device shown includes:

[0077] Mounting frame 1, which has two layers: upper and lower.

[0078] The mounting component is used to install the hydrogen tank 3 so as to install the hydrogen tank 3 within the mounting frame 1;

[0079] Four swing arms 4 are located on the left and right sides of the mounting frame 1 respectively. The top of the swing arms 4 is rotatably connected to the side wall of the mounting frame 1, and the bottom of the swing arms 4 has a first guide rail 5.

[0080] Four fixed arms 6 and four swing arms 4 are located on the left and right sides of the mounting frame 1 respectively. The fixed arms 6 are fixedly connected to the side wall of the mounting frame 1. The top of the fixed arm 6 has a second guide rail 7. The top of the fixed arm 6 contacts the bottom of the swing arm 4.

[0081] Two first sealing plates 8 are symmetrically located on the upper layer of the mounting frame 1. The two sides of the first sealing plates 8 are fixedly connected to the swing arms 4 so that the first sealing plates 8 and the swing arms 4 move together.

[0082] Two second sealing plates 9 are symmetrically located on the lower layer of the mounting frame 1. The two sides of the second sealing plates 9 are slidably connected to the inner rails of the swing arm 4 and the fixed arm 6 through sliding components.

[0083] The traction assembly is used to pull the second sealing plate 9 so that the second sealing plate 9 moves upward until the second sealing plate 9 is separated from the fixed arm 6. Under the action of the traction assembly, the swing arm 4 drives the second sealing plate 9 to flip.

[0084] Specifically, in the prior art, in order to prevent the hydrogen tank 3 from being damaged by external objects, protective plates are usually installed at both ends of the frame to seal the hydrogen tank 3 for storage. However, during the later maintenance of the hydrogen cylinder, maintenance personnel need to disassemble and install the protective plates. If the installation method is welding, the protective plates cannot be disassembled, which increases the maintenance difficulty. This technical solution can solve the above problems. The specific operation is as follows: when maintenance requires maintenance on one end of the hydrogen tank 3, the traction mechanism at the corresponding position is activated. The traction component pulls the second sealing plate 9, so that the second sealing plate 9 slides upward along the fixed arm 6. Under the guidance of the first guide rail 5 and the second guide rail 7, the second sealing plate 9 moves above the first sealing plate 8, thus canceling the seal on the lower layer of the mounting frame 1.

[0085] After the first sealing plate 8 is disengaged from the fixed arm 6, the swing arm 4 rotates under the action of the traction component, thereby causing the first sealing plate 8 to rotate, thus canceling the seal on the side of the mounting frame 1 and opening the side of the mounting frame 1 so that maintenance personnel can perform maintenance on the hydrogen tank 3.

[0086] After maintenance is completed, the traction mechanism is started. Under the action of gravity, the swing arm 4 drives the first sealing plate 8 to rotate, sealing the upper layer of the mounting frame 1. After the bottom of the swing arm is aligned with the top of the fixed arm 6, under the action of gravity, the second sealing plate 9 slides along the inside of the fixed arm 6 to seal the mounting frame 1. The same principle applies when maintenance is required on the other side of the hydrogen tank 3.

[0087] The protective device, by setting up a first sealing plate 8, a second sealing plate 9, a swing arm 4, and a fixed arm 6, can fold the first sealing plate 8 and the second sealing plate 9 together in an up-down arrangement, thereby saving space. On the one hand, it helps to reduce the space occupied during the flipping process, avoiding the inability to work in a confined space, and on the other hand, it helps to avoid safety hazards to vehicles passing behind.

[0088] As one optional implementation of the traction mechanism, the traction assembly includes:

[0089] Pneumatic motor 27, which is fixed to the top of mounting frame 1;

[0090] Winch 28 is coaxially fixed with the output shaft of pneumatic motor 27;

[0091] Wire rope 29, one end of which is wound around winch 28, and the other end is rotatably connected to second sealing plate 9;

[0092] Specifically, when maintenance is required, the pneumatic motor at the corresponding position causes the winch 28 to rotate, thereby tightening the wire rope 29. The wire rope 29 pulls the second sealing plate 9 to slide upward along the fixed arm 6. Under the guidance of the first guide rail 5 and the second guide rail 7, the second sealing plate 9 moves above the first sealing plate 8, thus canceling the seal on the lower layer of the mounting frame 1.

[0093] After the first sealing plate 8 is detached from the fixed arm 6, the swing arm 4 rotates under the continued pulling of the wire rope 29, thereby causing the first sealing plate 8 to rotate, thus canceling the seal on the side of the mounting frame 1 and opening the side of the mounting frame 1 so that maintenance personnel can perform maintenance on the hydrogen tank 3.

[0094] After maintenance, the winch 28 is rotated by the pneumatic cylinder motor, thereby loosening the wire rope 29. Under the action of gravity, the swing arm 4 drives the first sealing plate 8 to rotate, sealing the upper layer of the mounting frame 1. After the bottom of the swing arm is aligned with the top of the fixed arm 6, the second sealing plate 9 slides along the inside of the fixed arm 6 under the action of gravity to seal the mounting frame 1.

[0095] It should be noted that the bottom of the first sealing plate 8 and the top of the second sealing plate 9 are both beveled edges.

[0096] Among them, the two arms of the second sealing plate 9 are symmetrically rotated and connected with steel wire lifting lugs, and the steel wire rope 29 is fixedly connected to the steel wire lifting lugs.

[0097] As a further embodiment of the present invention, the installation components include:

[0098] Four sliding seats 16, two of which are symmetrically arranged on the upper layer of the mounting frame 1, and the other two are symmetrically arranged on the lower layer of the mounting frame 1.

[0099] A ring-shaped mounting bracket 17 is disposed inside the sliding seat 16, and an arc-shaped groove 18 is provided at the top of the ring-shaped mounting bracket 17.

[0100] Hydraulic cylinder 19 is fixedly connected in the arc-shaped slide groove 18, and the bottom end of the telescopic rod of hydraulic cylinder 19 is fixedly connected to an arc-shaped fastening plate 20.

[0101] The testing mechanism is used to test the sealing information on the left and right sides of the mounting frame 1. When the two sides of the mounting frame 1 are not sealed, the arc-shaped fastening plate 20 is moved away from the hydrogen tank 3 so that the hydrogen tank 3 can be placed into the two annular mounting brackets 17. When the two sides of the mounting frame 1 are sealed, the fastening mechanism is activated to fasten the hydrogen tank 3 to the annular mounting brackets 17.

[0102] Testing institutions include:

[0103] Two arc-shaped trigger blocks 21 are symmetrically distributed on the left and right sides of the mounting frame 1. The arc-shaped trigger blocks 21 are coaxially fixed with the swing arms 4 at the corresponding positions.

[0104] Two pressure sensors 22 are fixedly connected to the side wall of the mounting frame 1 at the positions corresponding to the arc-shaped trigger block 21.

[0105] The sliding seat 16 is slidably connected to the mounting frame 1, and the annular mounting bracket 17 is rotatably connected inside the sliding seat 16;

[0106] Each layer of the mounting frame 1 is fixedly connected to a push cylinder 23 on both the left and right sides. The end of the telescopic rod of the push cylinder 23 is fixedly connected to the sliding seat 16 at the corresponding position.

[0107] Specifically, when maintenance is required on the left side of the hydrogen tank 3, the pneumatic motor on the left side is started. Under the above principle, the swing arm 4 rotates, causing the arc-shaped trigger block 21 to actuate the pressure sensor 22, increasing the pressure parameter of the pressure sensor 22. Then, the hydraulic cylinder 19 on the left side is started, causing the extension rod of the hydraulic cylinder 19 to pull the arc-shaped fastening plate 20 to release the fastening on the left side of the hydrogen tank 3. Then, the push cylinder 23 is started, causing the hydrogen tank 3 to move to the side of the mounting frame 1 that is not sealed (i.e., the left side). On the one hand, the left end of the hydrogen tank 3 extends out from the left end of the mounting frame 1, increasing the maintenance space, which is conducive to maintenance personnel performing maintenance on the left end of the hydrogen tank 3. On the other hand, the part of the left side of the hydrogen tank 3 that was originally inside the annular mounting bracket 17 is exposed, which is conducive to maintenance personnel observing the whole hydrogen tank 3.

[0108] After maintenance, the swing arm 4 rotates, causing the arc-shaped trigger block 21 to disengage from the pressure sensor 22, thus restoring the pressure value of the pressure sensor 22. First, the push cylinder 23 pushes the sliding seat 16, causing the hydrogen tank 3 to reset. Then, the hydraulic cylinder 19 on the left side is activated to secure the hydrogen tank 3, ensuring its stability.

[0109] The same procedure applies when the right side of hydrogen tank 3 needs to be inspected.

[0110] As a further embodiment of the present invention, it also includes:

[0111] Drive gear 24 is symmetrically rotatably connected to the side wall of mounting frame 1;

[0112] An annular rack 25 is fixedly connected to the surface of the annular mounting bracket 17, and the annular rack 25 meshes with the drive gear 24.

[0113] The lead screw 26 is rotatably connected within the mounting frame 1. The lead screw 26 is slidably connected to the two sliding seats 16 and threadedly connected to the drive gear 24.

[0114] Specifically, by setting up a drive gear 24 and an annular rack 25, during the process of pushing the cylinder 23 to push the sliding seat 16, the drive gear 24 slides along the surface of the lead screw 26. Under the action of the threaded connection, the drive gear 24 rotates. Under the action of meshing, the drive rack drives the annular mounting bracket 17 to rotate, thereby making the hydrogen tank 3 rotate, reducing visual interference, so that maintenance personnel can fully inspect the surface of the hydrogen tank 3.

[0115] As one possible implementation of the sliding component, the sliding component includes:

[0116] Two upper rollers 10 are symmetrically rotated and connected to the two side walls near the top of the second sealing plate 9, and the upper rollers 10 are slidably connected inside the swing arm 4.

[0117] Two lower rollers 11 are symmetrically rotatably connected to the two side walls near the bottom of the second sealing plate 9, and the lower rollers 11 are slidably connected inside the fixed arm 6.

[0118] Specifically, by setting up upper and lower rollers 11 and a downward roller, the second sealing plate 9 slides along the inner wall trajectory of the fixed arm 6, so that the second sealing plate 9 is arranged on the first sealing plate 8.

[0119] As a further embodiment of the present invention, it also includes:

[0120] The limiting component is used to limit the lower roller 11 from entering the swing arm 4. The limiting component includes:

[0121] Rotating shaft 12 is rotatably connected to the inner wall near the bottom end of swing arm 4;

[0122] Rotary valve 13 is fixedly connected to the surface of rotating shaft 12;

[0123] Torsion spring 14, one end of which is fixedly connected to the inner arm of the swing arm 4, and the other end is fixedly connected to the rotary valve 13;

[0124] The slide guide block 15 is fixedly connected to the top of the fixed arm 6 to push the rotary valve 13 so that the rotary valve 13 rotates;

[0125] Specifically, by setting a rotary valve 13, during the slack of the wire rope 29, the second sealing plate 9 moves downward under the action of gravity, causing the lower roller 11 to move to the position of the rotary valve 13 to wait.

[0126] During the docking process between the swing arm 4 and the fixed arm 6, the rotary valve 13 is pushed by the slide guide block 15 to flip the rotary valve 13, thereby canceling the limit on the lower roller 11 and allowing the lower roller 11 to move along the first guide rail 5 into the fixed arm 6 so that the second sealing plate 9 seals the lower layer of the mounting frame 1.

[0127] After the swing arm 4 disengages from the fixed arm 6, the rotary valve 13 is rotated back to its original position under the action of the torsion spring 14, thereby blocking the bottom of the swing arm 4, which helps to limit the lower roller 11 and prevent the second sealing plate 9 from falling off.

[0128] Reference Figure 1 , Figure 13 and Figure 14 To address the above problems, this invention also proposes a protection method for an on-board hydrogen frame protection structure, which further includes:

[0129] Controller 2 is mounted on mounting frame 1;

[0130] The protective methods of this protective structure include:

[0131] Controller 2 receives a first request message sent by pressure sensor 22 based on pressure parameters;

[0132] The controller 2 generates first control information and second control information based on the first request information. The first control information is used to control the hydraulic cylinder 19, which is on the same side as the pressure sensor 22, to start. The second control information is used to control the push cylinder 23, which is on a different side from the pressure sensor 22, to start.

[0133] The controller 2 sends the first control information and the second control information to the hydraulic cylinder 19 and the push cylinder 23. First, the extension rod of the hydraulic cylinder 19 pulls the arc-shaped fastening plate 20, and then the push cylinder 23 pushes the sliding seat 16 so that the hydrogen tank 3 moves to the side of the mounting frame 1 that is not sealed.

[0134] When maintenance is required on one side of the hydrogen tank 3, the pneumatic motor at the corresponding position is activated, causing the swing arm 4 to rotate. This causes the arc-shaped trigger block 21 to actuate the pressure sensor 22, increasing the pressure parameter of the pressure sensor 22. The pressure sensor 22 generates a first request message and sends it to the controller 2, which generates a first control message and a second control message. The controller 2 then sends the first control message and the second control message to the hydraulic cylinder 19 on the same side and the push cylinder 23 on the other side. After receiving the first control message, the hydraulic cylinder 19's extension rod pulls the arc-shaped fastening plate 20. After receiving the second control message, the push cylinder 23 pushes the sliding seat 16, causing the hydrogen tank 3 to move towards the unsealed side of the mounting frame 1. This allows the end of the hydrogen tank 3 to extend out of the mounting frame 1, increasing the maintenance space and facilitating maintenance personnel to repair the end of the hydrogen tank 3. It also exposes the part of the hydrogen tank 3 that was originally inside the annular mounting bracket 17, allowing maintenance personnel to observe the entire hydrogen tank 3.

[0135] After maintenance, the swing arm 4 rotates to reset, causing the arc-shaped trigger block 21 to disengage from the pressure sensor 22, restoring the pressure value of the pressure sensor 22. The pressure sensor 22 generates a second request message and sends the first request message to the controller 2, causing the controller 2 to generate a third and a fourth control message. The controller 2 then sends the third and fourth control messages to the hydraulic cylinder 19 on the same side and the push cylinder 23 on the other side. After receiving the third control message, the push cylinder 23 pulls the sliding seat 16 to move the hydrogen tank 3 away from the mounting frame 1 and onto the sealed side, thus resetting the hydrogen tank 3. After receiving the fourth control message, the hydraulic cylinder 19 pushes the arc-shaped fastening plate 20 with its extension rod to fasten the hydrogen tank 3, ensuring its stability.

[0136] Specifically, it also includes:

[0137] Pressure sensor 22 generates a first request message based on an increase in pressure parameters;

[0138] Pressure sensor 22 sends a first request message to controller 2 to request controller 2 to generate first control information and second control information;

[0139] When maintenance is required on one side of the hydrogen tank 3, the pneumatic motor at the corresponding position is started, causing the swing arm 4 to rotate, which causes the arc-shaped trigger block 21 to move the pressure sensor 22, increasing the pressure parameter of the pressure sensor 22. The pressure sensor 22 generates a first request information and sends the first request information to the controller 2, which then generates a first control information and a second control information.

[0140] After maintenance, the swing arm 4 rotates to reset, causing the arc-shaped trigger block 21 to disengage from the pressure sensor 22, thus restoring the pressure value of the pressure sensor 22. The pressure sensor 22 generates a second request message and sends the first request message to the controller 2, causing the controller 2 to generate a third and a fourth control message.

[0141] Specifically, it also includes:

[0142] After receiving the first control information, the hydraulic cylinder 19 is activated, causing the extension rod of the hydraulic cylinder 19 to pull the arc-shaped fastening plate 20.

[0143] The cylinder 23 receives the second control information, causing the hydrogen tank 3 to move toward the side of the mounting frame 1 that is not sealed.

[0144] Among them, after receiving the first control information, the hydraulic cylinder 19 causes the telescopic rod of the hydraulic cylinder 19 to pull the arc-shaped fastening plate 20, and after receiving the second control information, the push cylinder 23 causes the push cylinder 23 to push the sliding seat 16 so that the hydrogen tank 3 moves to the side of the mounting frame 1 that is not sealed.

[0145] After receiving the third control information, the push cylinder 23 pulls the sliding seat 16 to move the hydrogen tank 3 away from the mounting frame 1 and onto the sealed side, thus resetting the hydrogen tank 3. After receiving the fourth control information, the hydraulic cylinder 19 pushes the arc-shaped fastening plate 20 with its extension rod to fasten the hydrogen tank 3.

[0146] Working principle of the invention: When maintenance is required on one end of the hydrogen tank 3, the traction mechanism at the corresponding position is activated, and the second sealing plate 9 is pulled by the traction component, so that the second sealing plate 9 slides upward along the fixed arm 6. Under the guidance of the first guide rail 5 and the second guide rail 7, the second sealing plate 9 moves above the first sealing plate 8, and the seal on the lower layer of the mounting frame 1 is canceled.

[0147] After the first sealing plate 8 is disengaged from the fixed arm 6, the swing arm 4 rotates under the action of the traction component, thereby causing the first sealing plate 8 to rotate, thus canceling the seal on the side of the mounting frame 1 and opening the side of the mounting frame 1 so that maintenance personnel can perform maintenance on the hydrogen tank 3.

[0148] After maintenance is completed, the traction mechanism is started. Under the action of gravity, the swing arm 4 drives the first sealing plate 8 to rotate, sealing the upper layer of the mounting frame 1. After the bottom of the swing arm is aligned with the top of the fixed arm 6, under the action of gravity, the second sealing plate 9 slides along the inside of the fixed arm 6 to seal the mounting frame 1. The same principle applies when maintenance is required on the other side of the hydrogen tank 3.

[0149] The protective device, by setting up a first sealing plate 8, a second sealing plate 9, a swing arm 4, and a fixed arm 6, can fold the first sealing plate 8 and the second sealing plate 9 together in an up-down arrangement, thereby saving space. On the one hand, it helps to reduce the space occupied during the flipping process, avoiding the inability to work in a confined space, and on the other hand, it helps to avoid safety hazards to vehicles passing behind.

[0150] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A vehicle-mounted hydrogen frame variable structure protective device, characterized in that, include: Mounting frame (1), the mounting frame (1) having upper and lower layers; The mounting assembly is used to mount the hydrogen tank (3) to mount the hydrogen tank (3) within the mounting frame (1); Four swing arms (4) are located on the left and right sides of the mounting frame (1), respectively. The top of each swing arm (4) is rotatably connected to the side wall of the mounting frame (1), and the bottom of each swing arm (4) has a first guide rail (5). Four fixed arms (6) and four swing arms (4) are located on the left and right sides of the mounting frame (1) respectively. The fixed arms (6) are fixedly connected to the side wall of the mounting frame (1). The top of the fixed arm (6) has a second guide rail (7). The top of the fixed arm (6) is in contact with the bottom of the swing arm (4). Two first sealing plates (8) are symmetrically located on the upper layer of the mounting frame (1). The two sides of the first sealing plates (8) are fixedly connected to the swing arms (4) so ​​that the first sealing plates (8) and the swing arms (4) move together. Two second sealing plates (9) are symmetrically located on the lower layer of the mounting frame (1). The two sides of the second sealing plates (9) are slidably connected to the inner rails of the swing arm (4) and the fixed arm (6) through sliding components. The traction assembly is used to pull the second sealing plate (9) so that the second sealing plate (9) moves upward until the second sealing plate (9) is separated from the fixed arm (6). Under the action of the traction assembly, the swing arm (4) drives the second sealing plate (9) to flip. The sliding component includes: Two upper rollers (10) are symmetrically rotated and connected to the two side walls near the top of the second sealing plate (9), and the upper rollers (10) are slidably connected inside the swing arm (4); Two lower rollers (11) are symmetrically rotated and connected to the two side walls near the bottom of the second sealing plate (9), and the lower rollers (11) are slidably connected inside the fixed arm (6); Also includes: A limiting component is used to limit the lower roller (11) from entering the swing arm (4), the limiting component comprising: A rotating shaft (12) is rotatably connected to the inner wall near the bottom end of the swing arm (4); A rotary valve (13) is fixedly connected to the surface of the rotating shaft (12); Torsion spring (14), one end of which is fixedly connected to the inner arm of the swing arm (4), and the other end is fixedly connected to the rotary valve (13); The slide guide block (15) is fixedly connected to the top of the fixed arm (6) to push the rotary valve (13) so that the rotary valve (13) rotates.

2. The vehicle-mounted hydrogen frame variable structure protective device according to claim 1, characterized in that, The installation components include: Four sliding seats (16), two of which are symmetrically arranged on the upper layer of the mounting frame (1), and the other two are symmetrically arranged on the lower layer of the mounting frame (1); An annular mounting bracket (17) is disposed inside the sliding seat (16), and an arc-shaped groove (18) is provided at the top of the annular mounting bracket (17). Hydraulic cylinder (19), the hydraulic cylinder (19) is fixedly connected in the arc-shaped slide groove (18), and the bottom end of the telescopic rod of the hydraulic cylinder (19) is fixedly connected to an arc-shaped fastening plate (20). The detection mechanism is used to detect the sealing information on the left and right sides of the mounting frame (1). When the two sides of the mounting frame (1) are not sealed, the arc-shaped fastening plate (20) is away from the hydrogen tank (3) so that the hydrogen tank (3) can be placed in the two annular mounting brackets (17). When the two sides of the mounting frame (1) are sealed, the fastening mechanism is activated to fasten the hydrogen tank (3) on the annular mounting brackets (17). The testing institutions include: Two arc-shaped trigger blocks (21) are symmetrically distributed on the left and right sides of the mounting frame (1). The arc-shaped trigger blocks (21) are coaxially fixed with the swing arm (4) at the corresponding position. Two pressure sensors (22) are fixedly connected to the side wall of the mounting frame (1) at the positions corresponding to the arc-shaped trigger block (21).

3. The vehicle-mounted hydrogen frame variable structure protective device according to claim 2, characterized in that, The sliding seat (16) is slidably connected to the mounting frame (1), and the annular mounting bracket (17) is rotatably connected inside the sliding seat (16); Each layer of the mounting frame (1) is fixedly connected to a push cylinder (23) on both the left and right sides. The end of the telescopic rod of the push cylinder (23) is fixedly connected to the sliding seat (16) at the corresponding position.

4. The vehicle-mounted hydrogen frame variable structure protection device according to claim 3, characterized in that, Also includes: A drive gear (24) is symmetrically rotatably connected to the side wall of the mounting frame (1); A ring rack (25) is fixedly connected to the surface of the ring mounting bracket (17), and the ring rack (25) meshes with the drive gear (24); The lead screw (26) is rotatably connected within the mounting frame (1), and is slidably connected to two sliding seats (16). The lead screw (26) is threadedly connected to the drive gear (24).

5. The vehicle-mounted hydrogen frame variable structure protection device according to claim 4, characterized in that, The traction assembly includes: A pneumatic motor (27) is fixed to the top of the mounting frame (1); The winch (28) is coaxially fixed with the output shaft of the pneumatic motor (27); A steel wire rope (29) is wound at one end around a winch (28) and at the other end is rotatably connected to a second sealing plate (9).

6. A protection method for a vehicle-mounted hydrogen frame protection structure, applicable to the vehicle-mounted hydrogen frame variable structure protection device as described in claim 5, characterized in that, Also includes: Controller (2), which is mounted on the mounting frame (1); The protective methods of this protective structure include: The controller (2) receives a first request message sent by the pressure sensor (22) based on pressure parameters; The controller (2) generates first control information and second control information based on the first request information. The first control information is used to control the hydraulic cylinder (19) on the same side as the pressure sensor (22) to start, and the second control information is used to control the push cylinder (23) on a different side from the pressure sensor (22) to start. The controller (2) sends the first control information and the second control information to the hydraulic cylinder (19) and the push cylinder (23), first causing the extension rod of the hydraulic cylinder (19) to pull the arc-shaped fastening plate (20), and then causing the push cylinder (23) to push the sliding seat (16) so that the hydrogen tank (3) moves to the side of the mounting frame (1) that is not sealed.

7. The protection method for a vehicle-mounted hydrogen frame protection structure according to claim 6, characterized in that, Also includes: The pressure sensor (22) generates a first request message based on the increase in pressure parameters; The pressure sensor (22) sends a first request message to the controller (2) to request the controller (2) to generate a first control message and a second control message.

8. The protection method of the vehicle-mounted hydrogen frame protection structure according to claim 7, characterized in that, Also includes: After receiving the first control information, the hydraulic cylinder (19) starts, causing the extension rod of the hydraulic cylinder (19) to pull the arc-shaped fastening plate (20). The cylinder (23) receives the second control information, causing the hydrogen tank (3) to move toward the side of the mounting frame (1) that is not sealed.

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