Split type CNG cylinder protection device and vehicle

Abstract

The invention provides a split type CNG gas cylinder protection device and a vehicle, the split type CNG gas cylinder protection device comprises a gas cylinder cabin partition plate and a gas cylinder cabin cover assembly, the gas cylinder cabin partition plate is fixedly arranged in a rear box main body and is close to one side of a cab, the gas cylinder cabin cover assembly is arranged at the top of the gas cylinder cabin partition plate in an overturning mode, and a gas cylinder locking assembly is arranged between the gas cylinder cabin partition plate and the rear box main body; the gas 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 adjusting piece penetrating through the gas cylinder cabin partition plate into the fixing box, through the circumferential locking piece, the CNG gas cylinders are only required to be placed in the positioning grooves, and the circumferential locking piece is triggered by the self weight of the CNG gas cylinders, so that the CNG gas cylinders can be locked, and the CNG gas cylinders can be locked. According to the CNG gas cylinder locking device, the axial locking piece is driven by the locking adjusting piece to lock the CNG gas cylinder in the axial direction, the circumferential locking piece can be locked through the locking adjusting piece, stability of the CNG gas cylinder is guaranteed, and protection on the gas cylinder is improved.

Description

Technical Field

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

[0002] CNG cylinders are high-pressure containers used to store compressed natural gas (CNG). CNG cylinders are high-pressure containers filled with flammable and explosive gases, which are explosive. Compressed natural gas generally refers to gaseous natural gas (methane as the main component) that has been pressurized to about 20MPa 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 pickups. The CNG cylinders on pickups are mostly installed in the front of the pickup cargo box near the cockpit, and the CNG cylinder compartment space is formed by setting a rear partition and a cylinder compartment cover.

[0004] At present, the gas cylinder protective cover of some CNG pickup trucks is 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 through bolts or straps. However, this protective cover or carrier generated according to the shape of the gas cylinder has certain limitations in use and is only limited to the assembly of gas cylinders of the current model. If other models and sizes of gas cylinders are assembled, they cannot fit the gas cylinders perfectly, and there is a possibility of hitting the gas cylinder valve device when the vehicle brakes suddenly, bumps, or has an accident. In addition, the method of fixing only with a single bolt or strap has poor protection effect and low safety for the gas cylinder, 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] A split CNG gas cylinder protection device according to an embodiment of the present invention is arranged in a rear box body, the split CNG gas cylinder protection device comprises a gas cylinder compartment partition fixedly arranged in the rear box body and close to a side of a cockpit, and a gas cylinder compartment cover assembly flipped and arranged on the top of the gas cylinder compartment partition, the gas cylinder compartment partition, the gas cylinder compartment cover assembly and the rear box body enclose a gas cylinder compartment for accommodating a CNG gas cylinder and at least a part of a gas 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 groups 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 penetrates the gas cylinder compartment partition to the fixing box. The fixing box is provided with a positioning groove for accommodating the CNG gas cylinder at the top, and a valve groove for accommodating the valve of the CNG gas cylinder at a side away from the axial locking piece. The circumferential locking piece is turned toward the direction close to the CNG gas cylinder to lock the CNG gas cylinder circumferentially, and the axial locking piece is driven by the locking adjustment piece to move toward or away from the CNG gas cylinder to lock the CNG gas cylinder axially. The locking adjustment member includes an adjustment member arranged close to one side of the axial locking member, and a locking member penetrating the adjustment member, the adjustment member and the axial locking member are threadedly transmitted, and the locking member respectively penetrates at least two groups of the circumferential locking members to lock the circumferential locking members.

[0007] 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 arranged close to a side of the first shaft disk.

[0008] 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.

[0009] 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, the sleeve groove has an arc shape, and a threaded groove threadedly connected to the threaded rod is penetrated at the center of the movable plate.

[0010] Furthermore, 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 circumferential position of the CNG cylinder.

[0011] 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 the locking part is provided with a locking hole for accommodating the locking rod to pass through.

[0012] Further, 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 can be caused to slide laterally by pressing down the driving part, and the transmission shaft disc can be driven to rotate axially along the center of a circle, and the transmission rod and the locking part can be driven to flip toward or away from the CNG cylinder in turn.

[0013] Furthermore, a total of six gas cylinder locking assemblies arranged in parallel are arranged 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.

[0014] 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 a side close to the gas cylinder compartment partition, and a plurality of buffer portions located on the cover plate and close to a side where the locking member is arranged, and the buffer portions overlap the gas cylinder compartment partition.

[0015] In addition, the present invention also provides a vehicle, comprising a split CNG cylinder protection device arranged on the vehicle.

[0016] Compared with the prior art: the circumferential locking piece does not require any unnecessary operation, and the CNG cylinder only needs to be placed in the positioning groove, and the circumferential locking piece is triggered by the deadweight 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, and then the axial locking piece is driven by the locking adjustment piece to move along the axial direction of the CNG cylinder and implement 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, and 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 successively penetrate the circumferential locking piece 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

[0017] Figure 1 This is a schematic structural diagram of a split CNG cylinder protection device in Embodiment 1 of the present invention; Figure 2 It is a schematic diagram of a partially expanded structure of a split CNG cylinder protection device in Embodiment 1 of the present invention; Figure 3 It is a partial structural schematic diagram of a gas cylinder locking assembly and an assembly frame in a split CNG gas cylinder protection device in Embodiment 1 of the present invention; Figure 4 It is a partial structural schematic diagram of a gas cylinder locking assembly in a split CNG gas cylinder protection device in Embodiment 1 of the present invention; Figure 5 It is a partial cross-sectional structural schematic diagram of a gas cylinder locking assembly in a split CNG gas cylinder protection device in Embodiment 1 of the present invention; Figure 6 It is a partial cross-sectional structural schematic diagram of a locking adjustment member in a split CNG cylinder protection device in Embodiment 1 of the present invention; Figure 7 It is a partial structural schematic diagram of the axial locking member in the split CNG cylinder protection device in the first embodiment of the present invention; Figure 8 It is a partial cross-sectional structural schematic diagram of a circumferential locking member in a split CNG cylinder protection device in Embodiment 1 of the present invention; Fig. 9 It is a schematic diagram of the structure of the split CNG cylinder protection device in the second embodiment of the present invention.

[0018] Description of main component symbols:

[0019] The following specific implementations will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] 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 a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] Embodiment 1 See also Figures 1 to 8 , shown is a split CNG gas cylinder protection device in the first embodiment of the present invention, which is arranged in the rear box body 1, and 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 side of the cockpit, 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, and the gas cylinder locking assembly 4 includes a fixed 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 fixed box 41, an axial locking member 45 movably arranged in the fixed box 41 and close to one side of the gas cylinder compartment partition 3, and a locking adjustment member 44 that penetrates the gas cylinder compartment partition 3 to the fixed box 41, and 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 gas 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 gas cylinders at the valve groove 43, through holes for accommodating the catheter can be opened on both sides of the valve groove 43, so that the external catheter can be connected to the corresponding CNG gas cylinder along the valve groove 43, and the circumferential locking piece 46 is flipped toward the direction close to the CNG gas cylinder to lock the CNG gas cylinder circumferentially, and then the axial locking piece 45 is driven by the locking adjustment piece 44 to move toward or away from the CNG gas cylinder to lock the CNG gas cylinder axially. 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.

[0024] Furthermore, the adjusting member includes a screw rod 441, a first shaft disk 442 fixedly arranged on the screw rod 441 on a 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 on the side of the locking rod 444 close to the second shaft disk 446, the buckle 445 is adapted to the slot 443, and the axial locking member 45 includes a positioning plate 451 accommodated in the positioning groove 42, at least two telescopic rods 453 extending outward from the bottom of the positioning plate 451, and a telescopic rod 453 arranged on a side away from the positioning plate 451. The movable plate 454 on the side, the positioning plate 451 is provided with a sleeve groove 452 toward the side of the CNG cylinder, the sleeve groove 452 is in the shape of an arc, and a screw groove 455 screwed with the screw rod 441 runs through the center of the movable plate 454. 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 buckle arms 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 driving part 463 is transversely The cross section gradually increases from bottom to top, and a locking hole for accommodating the locking rod 444 to pass through is opened 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 a 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 a side of the transmission rod 469 away from the transmission shaft disc 468, wherein the movable push block 466 is caused to slide laterally by pressing down the driving portion 463, and the transmission shaft disc 468 is driven to rotate axially along its center of circle, and the transmission rod 469 and the buckle portion 460 are driven to flip toward or away from the CNG cylinder in turn. , a total of six gas cylinder locking assemblies 4 arranged in parallel are arranged in the gas cylinder compartment 26, and an assembly rack 5 connected to the inner wall of the gas cylinder compartment 26 is fixedly arranged on at least two groups of gas cylinder locking assemblies 4 on the outermost sides. In some optional embodiments, the assembly rack 5 can also be a plate rack structure of 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, based on the top of the plate rack, a plurality of connection holes for connecting the gas cylinder locking assemblies 4 are opened. 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 that the current vehicle needs to assemble. It can be understood that the gas cylinder locking assemblies on the assembly rack 5 can be detachable, 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 arranged on the rear box body 1 and turned toward the gas cylinder compartment partition 3, gas rod assembly ends 22 respectively arranged on the gas cylinder compartment and the cover plate 21, a gas rod 23 arranged between the two gas rod assembly ends 22, a locking member 25 embedded on the side of the cover plate 21 close to the gas cylinder compartment partition 3, and a plurality of buffer parts 24 arranged on the side of the cover plate 21 close to the locking member 25, and the buffer parts 24 overlap the gas cylinder compartment partition 3.

[0025] In the specific implementation, first, the operator can unlock the lock piece 25, wherein the lock piece 25 is an anti-theft lock, which can be understood by those skilled in the art. Afterwards, the cover plate 21 that is locked by the lock piece 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 put the CNG gas cylinders into the positioning groove 42 opened on the top of the gas cylinder locking assembly 4 in turn. It should be noted that the valve of the CNG gas cylinder should be placed in a relative position to the valve groove 43, and the circumferential locking piece 46 is activated during the placement of the gas cylinder to perform preliminary locking along the circumferential edge of the current CNG gas cylinder. Specifically, when the operator puts 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 is in contact with the protective pad 462. 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. At the same time, a plurality of anti-slip stripes can be extended outward from 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. 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 the elastic part 465 at the bottom is triggered to be pressed downward and deformed. 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 then driven by the movable push block 466 to move in the same direction. During this process, the push rod 467 transmits the lateral thrust to the transmission shaft disc 468, which 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 an axial flip in the direction close to the protective pad 462. During this process, the buckle part 460 will flip the CNG cylinder on the top of the protective pad 462 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 buckle arm is in full contact with 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 groove 42 to increase the movable stroke of the lifting platform 461, thereby effectively improving the flipping stroke of the buckle arm to adapt to the CNG cylinder with a smaller diameter. In addition, in order to avoid the limit of the movable range of the buckle arm when the diameter of the CNG cylinder is large, if the buckle arm is continuously flipped, it may cause the buckle arm to break, a spring shaft can be added at the connection between the transmission rod 469 and the transmission shaft disc 468.The overturning force of the transmission rod 469 can be shared and converted into the axial rotational force of the spring shaft, and the rotational force is applied to the transmission rod 469 in the reverse direction to ensure that the transmission rod 469 and the buckle 460 are fully in contact with the CNG cylinder, and at the same time play a certain shock absorbing and stabilizing effect. Finally, through the above method, the operator does not need any extra operation, only needs to place the CNG cylinder in the positioning groove 42, and the circumferential locking piece 46 can be triggered by the self-weight of the CNG cylinder to complete the initial locking operation of the circumference of the bottle body, which is convenient to operate.

[0026] Next, 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 follow the rotation. 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 the top thereof 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 installed 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 elongated, and 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 disk 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 can be applied to CNG cylinders with different axial lengths to implement adjustment and final locking, which greatly improves the applicability of the present invention, and at the same time cooperates with the circumferential locking piece 46 to realize the circumferential and axial multi-directional locking of the CNG cylinder, thereby ensuring the stability of the CNG cylinder to a certain extent.

[0027] Next, 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 holes 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, the operator can disassemble the CNG cylinder 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 lift the CNG cylinder up to remove it from the positioning slot 42. In addition, in some optional embodiments, 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 protection 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 smoothly pass through the locking hole, 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 separated from the top pressure may be lifted up, which may also cause the transmission rod 469 and the buckle part 460 to loosen laterally.

[0028] In summary, the split-type CNG gas cylinder protection device in the above-mentioned embodiment of the present invention does not require any unnecessary operation through the circumferential locking piece 46. It only needs to place the CNG gas cylinder in the positioning groove 42, and the circumferential locking piece 46 can be triggered by the self-weight of the CNG gas cylinder to buckle along the circumferential direction of the CNG gas cylinder to complete the preliminary 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 gas cylinder in the axial direction and implement the locking operation, and it is suitable for fixing CNG gas 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 disk 442 is provided. During the process, the locking rod 444 will successively penetrate the locking part 464 to lock the circumferential locking piece 46, further ensuring the stability of the CNG gas cylinder, improving the protection effect of the CNG gas cylinder, and solving the problems of poor protection effect and low safety of the existing CNG gas cylinder protection device.

[0029] Embodiment 2 See also Fig. 9, shown is a split CNG gas cylinder protection device in the second embodiment of the present invention, which eliminates the setting of the gas cylinder locking assembly 4, so that the gas cylinder compartment 26 can accommodate a CNG gas cylinder that matches its lateral size, that is, the axial length of the CNG gas cylinder is matched with the width of the rear box body 1, and in this way, the fixation between the CNG gas cylinder and the gas cylinder compartment 26 can be fixed by means of welding frame limiting, bottle body welding or binding.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A split CNG cylinder protection device, arranged in the rear box body, characterized in that: The split CNG gas cylinder protection device comprises a gas cylinder compartment partition fixedly arranged in the rear box body and close to the side of the cockpit, and a gas cylinder compartment cover assembly flipped and arranged on the top of the gas cylinder compartment partition, and the gas cylinder compartment partition, the gas cylinder compartment cover assembly and the rear box body are enclosed to form a gas cylinder compartment for accommodating CNG gas cylinders and at least part of the gas 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 groups 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 penetrates the gas cylinder compartment partition to the fixing box. The fixing box is provided with a positioning groove for accommodating the CNG gas cylinder at the top, and a valve groove for accommodating the valve of the CNG gas cylinder at a side away from the axial locking piece. The circumferential locking piece is turned toward the direction close to the CNG gas cylinder to lock the CNG gas cylinder circumferentially, and the axial locking piece is driven by the locking adjustment piece to move toward or away from the CNG gas cylinder to lock the CNG gas cylinder axially. The locking adjustment member includes an adjustment member arranged close to one side of the axial locking member, and a locking member penetrating the adjustment member, the adjustment member and the axial locking member are threadedly transmitted, and the locking member respectively penetrates at least two groups of the circumferential locking members to lock the circumferential locking members.

2. The split type CNG cylinder protection device according to claim 1 is characterized in that: The adjusting member comprises a screw rod, a first shaft disc fixedly arranged on a side of the screw rod away from the fixing box, and a clamping groove embedded in the inner side of the screw rod and arranged close to a side of the first shaft disc.

3. The split type CNG cylinder protection device according to claim 2 is characterized in that: The locking element 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.

4. The split type CNG cylinder protection device according to claim 3 is 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 side, and the sleeve groove has an arc shape. A screw groove threadedly connected to the screw rod is penetrated at the center of the movable plate.

5. The split type CNG cylinder protection device according to claim 4 is characterized in that: The circumferential locking member comprises 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 circumferential position of the CNG cylinder.

6. The split type CNG cylinder protection device according to claim 5, 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 for accommodating the locking rod to pass through is opened on the locking part.

7. The split type CNG cylinder protection device according to claim 6, 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 the transmission rod and the locking part are in turn driven to flip toward or away from the CNG cylinder.

8. 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 arranged in the gas cylinder compartment, and assembly frames connected to the inner wall of the gas cylinder compartment are fixedly arranged on at least two outermost groups of the gas cylinder locking assemblies.

9. 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 a side close to the gas cylinder compartment partition, and a plurality of buffer portions located on the cover plate and close to a side where the locking member is arranged, and the buffer portions overlap the gas cylinder compartment partition.

10. A vehicle, characterized in that: A split CNG cylinder protection device comprising any one of claims 1 to 9 provided on the vehicle.

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