Split CNG cylinder protection device and vehicle

Abstract

The present invention provides a split CNG cylinder protection device and a vehicle, wherein the split CNG cylinder protection device comprises a cylinder compartment partition fixedly arranged in a rear box body and close to a side of a cockpit, and a cylinder compartment cover assembly flipped and arranged on the top of the cylinder compartment partition, a cylinder locking assembly is arranged between the cylinder compartment partition and the rear box body, the cylinder locking assembly comprises a fixing box, a circumferential locking piece embedded in the fixing box, an axial locking piece movably arranged in the fixing box, and a locking adjustment piece that passes through the cylinder compartment partition to the fixing box, wherein the circumferential locking piece is used to place the CNG cylinder in the positioning groove, and the circumferential locking piece is triggered by the deadweight of the CNG cylinder itself to complete the preliminary locking operation on the circumference of the bottle body, and the axial locking piece is driven by the locking adjustment piece to perform a locking operation on the axial direction of the CNG cylinder, and the circumferential locking piece can be locked by the locking adjustment piece, thereby ensuring the stability of the CNG cylinder and improving the protection of the cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle CNG protection, and in particular to a split-type CNG cylinder protection device and a vehicle. Background Art

[0002] CNG cylinders are high-pressure containers used to store compressed natural gas (CNG). These cylinders contain flammable and explosive gases, posing a risk of explosion. Compressed natural gas (CNG) generally refers to natural gas (primarily methane) that has been pressurized to approximately 20 MPa at multiple stages and can be used as fuel for vehicle engines.

[0003] CNG cylinders are widely used in natural gas-powered vehicles, such as natural gas buses, natural gas cars, natural gas trucks and natural gas pickup trucks. The CNG cylinders on pickup trucks are mostly installed in the front of the pickup truck cargo box near the cockpit, and the CNG cylinder compartment space is formed by setting the rear partition of the cylinder compartment and the cylinder compartment cover.

[0004] At present, the gas cylinder protective covers of some CNG pickup trucks are realized by stamping one or more semi-cylindrical protective covers or carriers similar to the shape of the gas cylinders through steel plates, and then fixing the gas cylinders to the above-mentioned protective covers or carriers by bolts or straps. However, this protective cover or carrier generated according to the shape of the gas cylinder has certain limitations in use. It is only limited to the assembly of gas cylinders of current models. If other models and sizes of gas cylinders are assembled, they cannot fit the gas cylinders perfectly. In addition, when the vehicle brakes suddenly, bumps, or has an accident, there is a possibility of hitting the gas cylinder valve device. In addition, the method of fixing with only a single bolt or strap has poor protection effect on the gas cylinder and low safety, and there may be a risk of loss. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a split CNG cylinder protection device and a vehicle, so as to fundamentally solve the problem that the existing CNG cylinder protection device has poor protection effect and low safety.

[0006] According to an embodiment of the present invention, a split CNG gas cylinder protection device is disposed within a rear box body. The split CNG gas cylinder protection device includes a gas cylinder compartment partition fixedly disposed within the rear box body and adjacent to a side of the cockpit, and a gas cylinder compartment cover assembly flipped over and disposed on top of the gas cylinder compartment partition. The gas cylinder compartment partition, the gas cylinder compartment cover assembly, and the rear box body together form a gas cylinder compartment for accommodating a CNG gas cylinder and at least a portion of a gas cylinder locking assembly.

[0007] The gas cylinder locking assembly includes a fixing box fixedly arranged in the gas cylinder compartment for accommodating the CNG gas cylinder, at least two sets of circumferential locking pieces embedded in the fixing box, an axial locking piece movably arranged in the fixing box and close to one side of the gas cylinder compartment partition, and a locking adjustment piece that passes through the gas cylinder compartment partition to the fixing box. The fixing box is provided with a positioning groove for accommodating the CNG gas cylinder on the top, and a valve groove for accommodating the CNG gas cylinder valve on the side away from the axial locking piece. The circumferential locking piece is turned toward the direction close to the CNG gas cylinder to achieve circumferential locking of the CNG gas cylinder, and the locking adjustment piece drives the axial locking piece to move toward or away from the CNG gas cylinder to achieve axial locking of the CNG gas cylinder.

[0008] The locking adjustment member includes an adjustment member arranged near one side of the axial locking member, and a locking member passing through the adjustment member. The adjustment member and the axial locking member are threadedly transmitted, and the locking member passes through at least two groups of the circumferential locking members respectively to lock the circumferential locking members.

[0009] Furthermore, the adjusting member includes a threaded rod, a first shaft disk fixedly arranged on a side of the threaded rod away from the fixing box, and a clamping groove embedded in the inner side of the threaded rod and close to a side of the first shaft disk.

[0010] Furthermore, the locking piece includes a locking rod axially passing through the screw rod, a second shaft disk arranged on the side of the locking rod away from the fixing box, and a buckle at least partially embedded in the side of the locking rod close to the second shaft disk, and the buckle is adapted to the slot.

[0011] Furthermore, the axial locking member includes a positioning plate accommodated in the positioning groove, at least two telescopic rods extending outward from the bottom of the positioning plate, and a movable plate arranged on the side of the telescopic rod away from the positioning plate. The positioning plate is provided with a sleeve groove facing the CNG cylinder side, and the sleeve groove has an arc shape. A threaded groove threadedly connected to the threaded rod is passed through the center of the movable plate.

[0012] Furthermore, the circumferential locking member includes a driving member embedded in the middle section of the positioning groove for supporting the CNG cylinder, and buckling arms arranged on both sides of the driving member for fixing the circumferential position of the CNG cylinder.

[0013] Furthermore, the driving member includes a protective pad whose top contacts the CNG cylinder, a lifting platform arranged at the bottom of the protective pad, a driving part arranged on the side of the lifting platform away from the protective pad, and a locking part and an elastic part arranged in sequence on the side of the driving part away from the lifting platform. The cross-section of the driving part gradually increases from bottom to top, and a locking hole is provided on the locking part for accommodating the locking rod to pass through.

[0014] Furthermore, the locking arm includes a movable push block arranged near the driving part, a push rod extending outward along the movable push block toward a side away from the driving part, a transmission shaft disc arranged on a side of the push rod away from the movable push block, a transmission rod arranged on the transmission shaft disc, and a locking part arranged on a side of the transmission rod away from the transmission shaft disc, wherein the driving part is pressed down to make the movable push block slide laterally, and drive the transmission shaft disc to rotate axially along the center of the circle, and in turn drive the transmission rod and the locking part to flip toward or away from the CNG cylinder.

[0015] Furthermore, a total of six gas cylinder locking assemblies arranged in parallel are provided in the gas cylinder compartment, and at least two outermost groups of the gas cylinder locking assemblies are fixedly provided with assembly frames connected to the inner wall of the gas cylinder compartment.

[0016] Furthermore, the gas cylinder compartment cover assembly includes a cover plate arranged on the rear box body and flipped toward the gas cylinder compartment partition, gas rod assembly ends respectively arranged on the gas cylinder compartment and the cover plate, a gas rod arranged between the two gas rod assembly ends, a locking member embedded in the cover plate on the side close to the gas cylinder compartment partition, and a plurality of buffer portions located on the cover plate and close to the side where the locking member is arranged, and the buffer portions overlap the gas cylinder compartment partition.

[0017] In addition, the present invention also provides a vehicle, comprising a split CNG cylinder protection device arranged on the vehicle.

[0018] Compared with the existing technology: the circumferential locking piece does not require any unnecessary operation. The CNG cylinder only needs to be placed in the positioning groove, and the circumferential locking piece is triggered by the weight of the CNG cylinder itself, so that it is buckled along the circumference of the CNG cylinder to complete the initial locking operation on the circumference of the bottle body. After that, the axial locking piece is driven by the locking adjustment piece to move along the axial direction of the CNG cylinder and perform the locking operation, which is suitable for fixing CNG cylinders with different axial lengths. In addition, the circumferential locking piece can be further locked by the locking adjustment piece. The operator can insert the locking rod along one side of the first shaft disk set on the screw rod. During the process, the locking rod will pass through the circumferential locking piece in sequence to lock the circumferential locking piece, further ensuring the stability of the CNG cylinder, improving the protection effect of the CNG cylinder, and solving the problems of poor protection effect and low safety of the existing CNG cylinder protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a split CNG cylinder protection device in Example 1 of the present invention;

[0020] Figure 2This is a partially expanded structural diagram of a split CNG cylinder protection device in Example 1 of the present invention;

[0021] Figure 3 Schematic diagram of the partial structure of the cylinder locking assembly and the assembly frame in the split CNG cylinder protection device in the first embodiment of the present invention;

[0022] Figure 4 Schematic diagram of a portion of the structure of a gas cylinder locking assembly in a split-type CNG gas cylinder protection device in Embodiment 1 of the present invention;

[0023] Figure 5 Schematic diagram of a partial cross-sectional structure of a cylinder locking assembly in a split-type CNG cylinder protection device in Embodiment 1 of the present invention;

[0024] Figure 6 Schematic diagram of a partial cross-section of the locking adjustment member in the split CNG cylinder protection device in the first embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of a portion of the structure of the axial locking member in the split CNG cylinder protection device in the first embodiment of the present invention;

[0026] Figure 8 Schematic diagram of a partial cross-sectional structure of a circumferential locking member in a split CNG cylinder protection device in Embodiment 1 of the present invention;

[0027] Figure 9 This is a schematic structural diagram of a split CNG cylinder protection device in the second embodiment of the present invention.

[0028] Description of main component symbols:

[0029]

[0030] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Example 1

[0035] See also Figures 1 to 8 , shown is a split CNG gas cylinder protection device in embodiment 1 of the present invention, which is arranged in the rear box body 1. The split CNG gas cylinder protection device includes a gas cylinder compartment partition 3 fixedly arranged in the rear box body 1 and close to the cockpit side, and a gas cylinder compartment cover assembly 2 flipped and arranged on the top of the gas cylinder compartment partition 3. The gas cylinder compartment partition 3, the gas cylinder compartment cover assembly 2 and the rear box body 1 enclose a gas cylinder compartment 26 for accommodating CNG gas cylinders and at least part of the gas cylinder locking assembly 4. The gas cylinder locking assembly 4 includes a fixing box 41 fixedly arranged in the gas cylinder compartment 26 for accommodating CNG gas cylinders, at least two groups of circumferential locking members 46 embedded in the fixing box 41, an axial locking member 45 movably arranged in the fixing box 41 and close to one side of the gas cylinder compartment partition 3, and a locking adjustment member 44 that passes through the gas cylinder compartment partition 3 to the fixing box 41. A fixing box 41 is provided on the top for accommodating CNG gas cylinders. The positioning groove 42 of the gas cylinder and the valve groove 43 for accommodating the CNG cylinder valve on the side away from the axial locking piece 45. In some optional embodiments, in order to ensure the communication between the CNG cylinders at the valve groove 43, through holes for accommodating the conduit can be opened on both sides of the valve groove 43, so that the external conduit can be connected to the corresponding CNG cylinder along the valve groove 43. The circumferential locking piece 46 is flipped toward the direction close to the CNG cylinder to circumferentially lock the CNG cylinder, and then the axial locking piece 45 is driven by the locking adjustment piece 44 to move toward or away from the CNG cylinder to axially lock the CNG cylinder. The locking adjustment piece 44 includes an adjusting piece arranged near one side of the axial locking piece 45, and a locking piece passing through the adjusting piece. The adjusting piece and the axial locking piece 45 are threadedly driven, and the locking piece passes through at least two groups of circumferential locking pieces 46 respectively to lock the circumferential locking pieces 46.

[0036] Furthermore, the adjusting member includes a screw rod 441, a first shaft disk 442 fixedly arranged on the screw rod 441 on the side away from the fixing box 41, and a slot 443 embedded in the inner side of the screw rod 441 and close to the first shaft disk 442. The locking member includes a locking rod 444 axially passing through the screw rod 441, a second shaft disk 446 arranged on the side of the locking rod 444 away from the fixing box 41, and a buckle 445 at least partially embedded in the side of the locking rod 444 close to the second shaft disk 446. The buckle 445 is adapted to the slot 443. The axial locking member 45 includes a positioning plate 451 accommodated in the positioning groove 42, at least two telescopic rods 453 extending outward along the bottom of the positioning plate 451, and a The movable plate 454 on the side, the positioning plate 451 is provided with a sleeve groove 452 towards the side of the CNG cylinder, the sleeve groove 452 is in the shape of an arc, and the center of the movable plate 454 is penetrated by a screw groove 455 which is screwed to the screw rod 441. The circumferential locking member 46 includes a driving member embedded in the middle section of the positioning groove 42 for carrying the CNG cylinder, and a buckle arm arranged on both sides of the driving member for fixing the circumferential position of the CNG cylinder. The driving member includes a protective pad 462 in contact with the CNG cylinder at the top, a lifting platform 461 arranged at the bottom of the protective pad 462, a driving part 463 arranged on the side of the lifting platform 461 away from the protective pad 462, and a locking part 464 and an elastic part 465 arranged in sequence on the side of the driving part 463 away from the lifting platform 461. The cross-section gradually increases from bottom to top, and a locking hole for accommodating the locking rod 444 is provided on the locking portion 464. The buckle arm includes a movable push block 466 arranged near the driving portion 463, a push rod 467 extending outward along the movable push block 466 toward the side away from the driving portion 463, a transmission shaft disc 468 arranged on the side of the push rod 467 away from the movable push block 466, a transmission rod 469 arranged on the transmission shaft disc 468, and a buckle portion 460 arranged on the side of the transmission rod 469 away from the transmission shaft disc 468. The driving portion 463 is pressed down to make the movable push block 466 slide laterally, and drive the transmission shaft disc 468 to rotate axially along its center of circle, and in turn drive the transmission rod 469 and the buckle portion 460 to flip toward or away from the CNG cylinder. , a total of six gas cylinder locking assemblies 4 arranged in parallel are provided in the gas cylinder compartment 26, and an assembly rack 5 connected to the inner wall of the gas cylinder compartment 26 is fixedly provided on at least two groups of gas cylinder locking assemblies 4 on the outermost side. In some optional embodiments, the assembly rack 5 can also be a plate rack structure with the same length as the inner side of the gas cylinder compartment 26, and is assembled with the inner wall of the gas cylinder compartment 26 by bolts. At the same time, a plurality of connection holes for connecting the gas cylinder locking assemblies 4 are opened on the top of the plate rack. The operator can install a corresponding number of gas cylinder locking assemblies 4 on the top of the plate rack according to the number of CNG gas cylinders required to be assembled in the current vehicle. It can be understood that the gas cylinder locking assemblies on the assembly rack 5 can be of a detachable design, which is convenient for the operator to reduce the gas cylinder locking assemblies 4 according to the number of CNG gas cylinders to reduce the vehicle load.The gas cylinder compartment cover assembly 2 includes a cover plate 21 mounted on the rear box body 1 and tilted toward the gas cylinder compartment bulkhead 3, gas rod mounting ends 22 mounted on the gas cylinder compartment and the cover plate 21, a gas rod 23 mounted between the two gas rod mounting ends 22, a locking member 25 embedded in the side of the cover plate 21 near the gas cylinder compartment bulkhead 3, and a plurality of buffer portions 24 located on the side of the cover plate 21 near the locking member 25. The buffer portions 24 overlap the gas cylinder compartment bulkhead 3.

[0037] During the specific implementation, first, the operator can unlock the lock member 25, wherein the lock member 25 is an anti-theft lock, which is understandable to those skilled in the art. Afterwards, the cover plate 21 that is locked after being released from the lock member 25 will be lifted up by the gas rod 23 to complete the opening of the gas cylinder hatch assembly 2. Then, the operator can place the CNG gas cylinders into the positioning groove 42 opened on the top of the gas cylinder locking assembly 4 in sequence. It should be noted that the valve of the CNG gas cylinder and the valve groove 43 must be placed in a relative position. During the placement of the gas cylinder, the circumferential locking member 46 is activated to perform preliminary locking along the circumferential edge of the current CNG gas cylinder. Specifically, when the operator places the CNG gas cylinder into the positioning groove 42, the bottle body will first contact the protective pad on the top of the driving member. 462 contact, in some optional embodiments, the protective pad 462 can be made of rubber or PC plastic material to improve the protection of the surface of the CNG cylinder, and at the same time, a plurality of anti-slip stripes can be extended outward based on the contact portion between the top of the protective pad 462 and the CNG cylinder to ensure the structural stability of the CNG cylinder on the protective pad 462, and then the pressure of the bottle body is transmitted to the lifting platform 461, the driving part 463, and the locking part 464 in sequence through the protective pad 462, and finally triggers the elastic part 465 at the bottom to press down and deform. During the downward movement of the driving part, the movable push blocks 466 arranged on both sides thereof can be pushed to move relatively through the inclined track of the edge of the driving part 463. It should be noted that the bottom end of the movable push block 466 is close to the fixed box 41 The push rod 467 is driven by the movable push block 466 to move in the same direction. During the process, the push rod 467 transmits the lateral thrust to the transmission shaft disc 468, and the transmission shaft disc 468 converts the lateral thrust into an axial rotational force along the center of the transmission shaft disc 468. The transmission shaft disc 468 drives the transmission rod 469 and the buckle part 460 to perform axial flipping in the direction close to the protective pad 462. During the process, the buckle part 460 will fit the CNG cylinder on the top of the protective pad 462 and flip it, and finally complete the locking of the cylinder in the circumferential direction. It should be noted that the two buckles The distance between the parts 460 when they are gathered together is smaller than the diameter of the current CNG cylinder. In addition, in order to ensure that the coupling arm fully contacts the outer surface of the CNG cylinder, in some optional embodiments of the present invention, a telescopic column can be set between the lifting platform 461 and the driving part 463 to adjust the distance between the lifting platform 461 and the driving part 463, so that most of the lifting platform 461 extends out of the positioning slot 42, thereby increasing the movable stroke of the lifting platform 461, thereby effectively improving the flipping stroke of the coupling arm to adapt to CNG cylinders with smaller diameters. In addition, in order to avoid the situation where the movable range of the coupling arm is limited when the diameter of the CNG cylinder is large, if the coupling arm is continuously flipped, it may cause the coupling arm to break, a spring shaft can be added at the connection between the transmission rod 469 and the transmission shaft disc 468.The spring shaft can share part of the turning force of the transmission rod 469, and the shared turning force can be converted into the axial rotational force of the spring shaft, and the rotational force is applied to the transmission rod 469 in the opposite direction, so as to ensure that the transmission rod 469 and the buckle 460 are in full contact with the CNG cylinder, while also providing a certain degree of shock absorption and stabilization. Finally, through the above method, the operator does not need to perform any additional operations. He only needs to place the CNG cylinder in the positioning groove 42, and the circumferential locking piece 46 is triggered by the CNG cylinder's own weight to complete the initial locking operation of the cylinder body. The operation is convenient.

[0038] Then, the operator can drive the axial locking piece 45 to lock the axial direction of the CNG cylinder through the locking adjustment piece 44. Specifically, the operator holds the first shaft disk 442 and rotates it clockwise to drive the screw rod 441 to rotate axially. During the process, the screw rod 441 can drive the movable plate 454 sleeved on its surface to rotate accordingly. However, since the bottom of the movable plate 454 is in contact with the fixed box 41, the axial driving force of the screw rod 441 is passed through the screw groove 455 screwed thereto, so that the movable plate 454 finally slides along the axial direction of the screw rod 441, and in turn drives the telescopic rod 453 and the positioning plate 451 at its top to follow the movement. In order to ensure that the positioning plate 451 always slides in contact with the positioning groove 42 during the movement, in some optional embodiments, a spring can be assembled in the telescopic rod 453. Due to the inclined design, when the movable plate 454 moves along its trajectory, the distance between the positioning plate 451 and the movable plate 454 will be lengthened. The telescopic rod 453 design ensures that the positioning plate 451 and the movable plate 454 are connected and transmitted, and can also be adaptively adjusted according to the distance between the positioning plate 451 and the movable plate 454. Afterwards, the first shaft disc 442 is continuously rotated to drive the positioning plate 451 to abut against the side of the CNG cylinder away from the valve, and at the same time, the part of the CNG cylinder away from the valve is embedded in the sleeve groove 452, thereby completing the axial locking of the CNG cylinder. This adjustment method is applicable to CNG cylinders with different axial lengths for adjustment and final locking, which greatly improves the applicability of the present invention. At the same time, it cooperates with the circumferential locking piece 46 to realize multi-directional locking of the CNG cylinder in the circumferential and axial directions, thereby ensuring the stability of the CNG cylinder to a certain extent.

[0039] Then, in order to improve the locking stability of the circumferential locking piece 46, the circumferential locking piece 46 is further locked by the locking adjustment piece 44. Specifically, the operator can insert the locking rod 444 along one side of the first shaft disk 442 provided on the screw rod 441. During the process, the locking rod 444 will successively penetrate into the locking hole provided on the locking portion 464 to lock the circumferential locking piece 46. Then, the locking rod 444 is continuously inserted until the buckle 445 is inserted into the card groove 443 on the inner side of the screw rod 441 to complete the locking operation. Afterwards, when the operator needs to disassemble the CNG cylinder, he can do so by relatively rotating the first shaft disk 442. The second shaft disk 446 is used to misalign the buckle 445 with the slot 443 to remove the locking rod 444. Then, by rotating the first shaft disk 442 counterclockwise, the axial locking piece 45 is controlled to move away from the CNG cylinder to disengage the lock on the cylinder. Finally, the operator only needs to hold the CNG cylinder and lift it up to remove it from the positioning slot 42. In addition, in some optional embodiments, in order to ensure the safety of the first shaft disk 442 and the second shaft disk 446, a locked storage box can be set on the side of the cylinder compartment partition 3 away from the cylinder compartment 26 to achieve the enclosure of the first shaft disk 442 and the second shaft disk 446 to ensure safety. It should be noted that in order to ensure that the locking rod 444 can pass through the locking hole smoothly, it is necessary to assist in pressing down the CNG cylinder before inserting the locking rod 444 to ensure in real time that the locking part 464 compresses the bottom elastic part 465 and is always in a saturated state of compression deformation, so as to avoid bumps during subsequent vehicle driving, causing the CNG cylinder to be in a weightless state. In this state, the lifting platform 461 that is free from the top pressure may be lifted up, which may also cause the transmission rod 469 and the buckle part 460 to loosen.

[0040] In summary, the split-type CNG cylinder protection device in the above embodiment of the present invention does not require any unnecessary operation through the circumferential locking piece 46. It only needs to place the CNG cylinder in the positioning groove 42, and the circumferential locking piece 46 is triggered by the weight of the CNG cylinder itself to buckle along the circumferential direction of the CNG cylinder to complete the initial locking operation on the circumference of the bottle body. The axial locking piece 45 is driven by the locking adjustment piece 44 to move the CNG cylinder in the axial direction and perform the locking operation, and is suitable for fixing CNG cylinders with different axial lengths. The circumferential locking piece 46 can be further locked by the locking adjustment piece 44. The operator can insert the locking rod 444 along the side of the screw rod 441 where the first shaft disc 442 is provided. During the process, the locking rod 444 will sequentially penetrate the locking part 464 to lock the circumferential locking piece 46, further ensuring the stability of the CNG cylinder, improving the protection effect of the CNG cylinder, and solving the problems of poor protection effect and low safety of the existing CNG cylinder protection device.

[0041] Example 2

[0042] See also Figure 9, shown is a split CNG cylinder protection device in embodiment 2 of the present invention, which eliminates the need for the cylinder locking assembly 4 so that the cylinder compartment 26 can accommodate a CNG cylinder that matches its lateral size, that is, the axial length of the CNG cylinder matches the width of the rear box body 1. In this manner, the CNG cylinder and the cylinder compartment 26 can be fixed by means of a welding frame limiter, bottle body welding, or strapping.

[0043] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A split CNG cylinder protection device, arranged in the rear box body, characterized in that: The split CNG cylinder protection device includes a cylinder compartment partition fixedly arranged in the rear box body and close to the cockpit side, and a cylinder compartment cover assembly flipped on top of the cylinder compartment partition. The cylinder compartment partition, the cylinder compartment cover assembly and the rear box body together form a cylinder compartment for accommodating CNG cylinders and at least part of the cylinder locking assembly. The gas cylinder locking assembly includes a fixing box fixedly arranged in the gas cylinder compartment for accommodating the CNG gas cylinder, at least two sets of circumferential locking pieces embedded in the fixing box, an axial locking piece movably arranged in the fixing box and close to the side of the gas cylinder compartment partition, and a locking adjustment piece that passes through the gas cylinder compartment partition to the fixing box. The top of the fixing box is provided with a positioning groove for accommodating the CNG gas cylinder, and a valve groove for accommodating the valve of the CNG gas cylinder on a side away from the axial locking piece. The circumferential locking piece is turned toward the direction close to the CNG gas cylinder to achieve circumferential locking of the CNG gas cylinder, and the locking adjustment piece drives the axial locking piece to move toward or away from the CNG gas cylinder to achieve axial locking or unlocking of the CNG gas cylinder. The locking adjustment member includes an adjustment member disposed near one side of the axial locking member, and a locking member penetrating the adjustment member, wherein the adjustment member is threadedly connected to the axial locking member, and the locking member respectively penetrates at least two groups of the circumferential locking members to lock the circumferential locking members; The adjusting member includes a screw rod, a first shaft disc fixedly arranged on the screw rod away from the fixing box, and a clamping groove embedded in the inner side of the screw rod and close to the first shaft disc; The locking piece includes a locking rod axially passing through the screw rod, a second shaft disk arranged on the side of the locking rod away from the fixing box, and a buckle at least partially embedded in the side of the locking rod close to the second shaft disk, and the buckle is adapted to the slot.

2. The split CNG cylinder protection device according to claim 1, characterized in that: The axial locking piece includes a positioning plate accommodated in the positioning groove, at least two telescopic rods extending outward from the bottom of the positioning plate, and a movable plate arranged on the side of the telescopic rod away from the positioning plate. The positioning plate is provided with a sleeve groove facing the CNG cylinder, and the sleeve groove has an arc shape. A screw groove threadedly connected to the screw rod is passed through the center of the movable plate.

3. The split type CNG cylinder protection device according to claim 2, characterized in that: The circumferential locking member includes a driving member embedded in the middle section of the positioning groove for carrying the CNG cylinder, and buckling arms arranged on both sides of the driving member for fixing the CNG cylinder along the circumferential position.

4. The split type CNG cylinder protection device according to claim 3, characterized in that: The driving member includes a protective pad whose top contacts the CNG cylinder, a lifting platform arranged at the bottom of the protective pad, a driving part arranged on the side of the lifting platform away from the protective pad, and a locking part and an elastic part arranged in sequence on the side of the driving part away from the lifting platform. The cross-section of the driving part gradually increases from bottom to top, and a locking hole is provided on the locking part for accommodating the locking rod to pass through.

5. The split type CNG cylinder protection device according to claim 4, characterized in that: The locking arm includes a movable push block arranged near the driving part, a push rod extending outward along the movable push block toward a side away from the driving part, a transmission shaft disc arranged on a side of the push rod away from the movable push block, a transmission rod arranged on the transmission shaft disc, and a locking part arranged on a side of the transmission rod away from the transmission shaft disc, wherein the movable push block is caused to slide laterally by pressing down the driving part, and the transmission shaft disc is driven to rotate axially along the center of a circle, and in turn the transmission rod and the locking part are driven to flip toward a direction close to the CNG cylinder.

6. The split type CNG cylinder protection device according to claim 1, characterized in that: A total of six gas cylinder locking assemblies arranged in parallel are provided in the gas cylinder compartment, and an assembly frame connected to the inner wall of the gas cylinder compartment is fixedly provided on at least two outermost groups of the gas cylinder locking assemblies.

7. The split type CNG cylinder protection device according to claim 1, characterized in that: The gas cylinder compartment cover assembly includes a cover plate arranged on the rear box body and flipped toward the gas cylinder compartment partition, gas rod assembly ends respectively arranged on the gas cylinder compartment and the cover plate, a gas rod arranged between the two gas rod assembly ends, a locking member embedded in the cover plate on the side close to the gas cylinder compartment partition, and a plurality of buffer portions located on the cover plate and close to the side where the locking member is arranged, and the buffer portions are overlapped on the gas cylinder compartment partition.

8. A vehicle, characterized in that: The split CNG cylinder protection device according to any one of claims 1 to 7 is provided on the vehicle.

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