Folding expansion type flying wing truck compartment and expansion fastening method

Abstract

The invention discloses a folding expansion type flying wing truck carriage and an expansion fastening method, and belongs to the technical field of flying wing truck fixing components, the carriage comprises side beams installed on the two sides of a truck plate, lifting frames are fixedly connected to the front side and the rear side of the top of the truck plate, and a folding assembly is arranged above the truck plate; the folding assembly comprises a lifting compartment top fixedly connected to the top of the lifting frame, and first air cylinders are fixedly connected to the two sides of an inner cavity of the lifting frame. Through cooperative use of the side beams, the folding assemblies and the platform expanding assemblies, a closed space is built on the top of the truck plate, meanwhile, through cooperative use of the supporting arms and the supporting assemblies, the expanded platform is supported, and finally, through cooperative use of the fastening assemblies, the inclined supporting assemblies and the supporting cross beams, the truck plate can be folded and unfolded. And the supporting arms are further supported and reinforced, so that the purposes that the using platform area can be expanded, the using area can be quickly expanded and the supporting stability strength is high can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of flying wing truck fixing components, and in particular relates to a foldable and expandable flying wing truck compartment and an expansion and fastening method. Background Art

[0002] A truck, also known as a cargo truck, is a commercial vehicle mainly used to transport goods. The biggest feature of a flying wing truck is that the wing panels on both sides can be flipped upwards, similar to the wings of an airplane, hence the name "flying wing". The wing panels are usually made of lightweight but high-strength materials, such as aluminum alloy or high-strength composite materials, to reduce the weight of the vehicle while ensuring structural strength.

[0003] The usable space of a truck compartment is relatively limited. When used for banquets, camping, or building emergency sites, the compartment cannot provide sufficient usable space. Some expandable truck compartments are cumbersome to build, requiring collaboration of multiple people to build them one by one, which takes up much time and energy. In addition, the expanded usable space relies solely on vertical support, and its support strength is insufficient. Therefore, it is necessary to provide a foldable and expandable flying wing truck compartment and an expansion fastening method, which can quickly expand the usable platform area, save manpower and time costs, and is equipped with a fastening structure to further improve the support strength of the expanded platform. Summary of the invention

[0004] The purpose of the present invention is to provide a foldable and expandable flying wing truck body and an expansion and fastening method, which can quickly expand the usable platform area, save manpower and time costs, and is equipped with a fastening structure to further improve the supporting strength of the expanded platform to solve the above-mentioned technical problems.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a foldable and expandable flying wing truck compartment, the compartment includes side beams installed on both sides of the truck panel, the front and rear sides of the top of the truck panel are fixedly connected to a lifting frame, a folding component is arranged above the truck panel, the folding component includes a lifting compartment top fixedly connected to the top of the lifting frame, both sides of the inner cavity of the lifting frame are fixedly connected to a first cylinder, the output end of the first cylinder is fixedly connected to the top of the inner cavity of the lifting frame, both sides of the lifting compartment top are rotatably connected to a first tilting compartment plate, the end of the first tilting compartment plate away from the lifting compartment top is rotatably connected to a second tilting compartment plate, and the second tilting compartment plate is rotatably connected to the second tilting compartment plate. The end of the compartment plate away from the first tilt compartment plate is rotatably connected to the side wall plate, the front and rear sides of the top of the truck compartment plate are rotatably connected to the first inner compartment plate, the top of the first inner compartment plate is rotatably connected to the second inner compartment plate, a rotatable second cylinder is installed on one side of the first inner compartment plate, the output end of the second cylinder is rotatably connected to the second inner compartment plate, an extension platform assembly is provided on the top of the truck compartment plate, the extension platform assembly includes a triangular rotating part rotatably connected to the front and rear ends of the truck compartment plate, the opposite sides of two adjacent triangular rotating parts are fixedly connected to the first linkage rod, and a rotatable third air cylinder is installed on both ends of the front and rear sides of the top of the truck compartment plate The output end of the third cylinder is rotatably connected to the triangular rotating member, the top of the side beam is rotatably connected to the first bottom plate, the first bottom plate is rotatably connected to the second bottom plate on the side away from the triangular rotating member, the first linkage rod is rotatably connected to the first bottom plate at one end away from the triangular rotating member, the second bottom plate is rotatably connected to the side wall plate on the side away from the first bottom plate, the front and rear ends of the side beam away from the truck board are rotatably connected to support arms, a support assembly is provided on the side of the bottom of the support arm away from the side beam, a support beam is provided between the two support arms, a rectangular slot adapted to the support beam is provided at the bottom of the support arm, and the inner cavity of the support beam The front and rear sides of the vehicle body are provided with fastening components, and the fastening components include a second fixing seat fixedly connected to the inner cavity of the supporting beam, the inner cavity of the second fixing seat is fixedly connected with a threaded groove, a threaded pin is penetrated at the junction of the first base plate and the second base plate, the threaded pin penetrates to the bottom of the first base plate and the second base plate and is threadedly connected to the threaded groove, a rotatable rotating seat is provided on both sides of the inner cavity of the second fixing seat, and a diagonal bracing assembly is provided in the inner cavity of the rotating seat, the rear side of the truck plate is rotatably connected to the stair frame, and a rotatable fifth cylinder is installed at both ends of the rear side of the top of the truck plate, and the output end of the fifth cylinder is rotatably connected to the stair frame.

[0006] Preferably, the support assembly includes a triangular rotating plate rotatably connected to one end of the bottom of the support arm away from the side beam, a fourth cylinder is fixedly installed on the bottom of the triangular rotating plate, a first fixed seat is fixedly connected to the side of the bottom of the support arm away from the side beam, a connecting plate is fixedly connected to the surface of the fourth cylinder, and a slidable limit pin is penetrated through one side of the first fixed seat.

[0007] Preferably, a first spring is sleeved on the surface of the limit pin, one end of the first spring is welded to the first fixing seat, the other end of the first spring is welded to the limit pin, and the limit pin is inserted into the inner cavity of the connecting plate.

[0008] Preferably, both sides of the inner cavity of the second fixed seat are rotatably connected with a rotating column, the rotating seat is fixedly connected to the surface of the rotating column, the surface of the rotating column is fixedly connected with a gear, the two gears are meshed, and the rear end of the rotating column on the right side passes through the rear side of the second fixed seat and is fixedly connected with a handle.

[0009] Preferably, a ratchet is fixedly connected to the rear side of the surface of the rotating column on the left side, and a limiting clamp is rotatably connected to the rear side of the inner cavity of the second fixing seat, and the limiting clamp is meshed with the ratchet.

[0010] Preferably, a second spring is welded to the rear side of the inner cavity of the second fixing seat, and the top end of the second spring is welded to the bottom end of the limiting clamp.

[0011] Preferably, the diagonal brace assembly includes a threaded outer tube rotatably connected to the inner cavity of a rotating seat, a rotatable rocker arm is penetrated through the front side of the rotating seat, the top of the surface of the threaded outer tube and the rear end of the rocker arm are fixedly connected with bevel gears, the two bevel gears are meshed, and the embedded thread of the threaded outer tube is connected to a threaded inner tube.

[0012] Preferably, a square rod is fixedly connected to the top of the inner cavity of the rotating seat, the threaded inner tube is slidably connected to the surface of the square rod, and the bottom end of the threaded inner tube is rotatably connected to a support plate.

[0013] Preferably, the front and rear sides of the top of the side beam are fixedly connected with a guide seat, the surface of the guide seat is slidably connected with a second linkage rod, and one end of the second linkage rod away from the guide seat is rotatably connected to the support arm.

[0014] A method for expanding and fastening a foldable and expandable flying wing truck compartment, the method comprises the following steps: Step 1: first, drive the truck plate to the use position, then rotate the support arm so that the support arm rotates 90 degrees and unfolds, then pull the limit pin so that the limit pin disengages from the inner cavity of the connecting plate and compresses the limit pin, and the fourth cylinder naturally falls after the limit is released, so that the triangular rotating plate rotates 90 degrees, and then open the fourth cylinder so that the output end of the fourth cylinder extends out and comes into contact with the ground, thereby supporting the end of the support arm away from the side beam. In the process of rotating and opening the support arm, the support arm pulls the second linkage rod so that the end of the second linkage rod away from the support arm slides on the surface of the guide seat, and a triangular support is formed for the connection position between the support arm and the side beam through the second linkage rod; Step 2: Subsequently, the first cylinder is turned on and pushes the lifting frame to extend and retract. The top of the lifting frame drives the top of the lifting box to rise upward during the rising process, and then the top of the lifting box drives the first tilting box plate and the second tilting box plate to rotate. After the first cylinder rises to the highest point, the third cylinder is turned on and pulls the triangular rotating part, so that the triangular rotating part rotates, and under the linkage action of the first linkage rod, the first bottom plate is unfolded to the side away from the third cylinder. Since the first bottom plate and the second bottom plate are in a rotationally connected state, the first bottom plate exerts a thrust on the second bottom plate toward the side away from the truck plate during the rotation process, so that the first bottom plate and the second bottom plate All of them are laid on the top of the support arm to form a horizontal plane, and then the first inner compartment plate is rotated so that the first inner compartment plate and the second inner compartment plate on its top reach the front and rear sides of the truck board, and then the second cylinder is opened and drives the second inner compartment plate to rotate with its connection position with the first inner compartment plate as the rotation center, so that the first inner compartment plate and the second inner compartment plate are in the same vertical plane, and the front and rear sides of the top of the truck board are closed. At this point, with the coordinated use of the lifting compartment roof, the first tilting compartment plate, the second tilting compartment plate, the side wall plate, the first bottom plate, the second bottom plate, the first inner compartment plate and the second inner compartment plate, a relatively closed space is formed on the top of the truck board; Step 3: Then the user moves the support beam to the bottom of the support arm, and makes the front and rear ends of the support beam snap into the rectangular slot at the bottom of the support arm, and then passes the threaded pin from the connection position of the first bottom plate and the second bottom plate from top to bottom into the inner cavity of the support beam, and makes the threaded pin rotate in the inner cavity of the threaded groove, at this time, the first bottom plate, the second bottom plate and the support arm are pulled and fixed; Step 4: The user then rotates the handle at the front end of the rotating column to make the two gears rotate at the same time. Under the transmission action of the two meshing gears, the two rotating seats rotate in opposite directions and drive the threaded outer tube to move. Then the user shakes the rocker. During the rotation of the rocker, the threaded outer tube rotates in the inner cavity of the rotating seat through the meshing transmission action of the two bevel gears. Under the pushing action of the internal threads of the threaded outer tube, the threaded inner tube extends obliquely downward and drives the support plate to come into contact with the ground, thereby obliquely bracing and fixing the second fixed seat and the supporting beam. During the rotation of the rotating column, the ratchet rotates accordingly and continuously causes the limit clamp to be moved. After the rotating column is rotated to the right position, the limit clamp engages with the ratchet to limit and lock the angle of the two rotating columns. When disassembling, the user only needs to move the second spring to release the limit on the ratchet and rotate the rotating column in the opposite direction.

[0015] The beneficial effects of the present invention are as follows: the present invention enables a closed space to be built on the top of the truck plate through the coordinated use of side beams, folding components and extended platform components, and at the same time, the extended platform is supported through the coordinated use of support arms and support components, and finally, the support arms are further supported and reinforced through the coordinated use of fastening components, diagonal bracing components and supporting crossbeams, thereby achieving the purpose of expandable platform area, rapid expansion of the usable area and high support stability and strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only exemplary and do not limit the present invention, wherein: Figure 1 A side view schematic diagram of an embodiment of the present invention; Figure 2 A schematic front view of an embodiment of the present invention; Figure 3 An embodiment of the present invention Figure 2 A partial enlarged view of point A; Figure 4 It is a three-dimensional schematic diagram of a side beam, an extension platform assembly and a support arm according to an embodiment of the present invention; Figure 5 It is a three-dimensional schematic diagram of a side beam, a support arm and a diagonal brace assembly according to an embodiment of the present invention; Figure 6 A three-dimensional exploded view of a fastening assembly, a diagonal bracing assembly and a supporting beam according to an embodiment of the present invention; Figure 7 It is a three-dimensional schematic diagram of a fastening assembly and a diagonal bracing assembly according to an embodiment of the present invention; Figure 8 It is a three-dimensional exploded view of a fastening assembly and a diagonal bracing assembly according to an embodiment of the present invention; Fig. 9 An embodiment of the present invention Figure 8 A partial enlarged view of point B in the middle; Fig.10 It is a three-dimensional exploded view of an embodiment of the present invention and a diagonal brace assembly; Fig.11 A three-dimensional exploded view of a support arm and a support assembly according to an embodiment of the present invention; Fig.12An embodiment of the present invention Fig.11 A partial enlarged view of point C in the middle; Fig.13 The figure is a schematic diagram of the expansion steps of an embodiment of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Truck plate, 2. Side beam, 3. Lifting frame, 4. Folding assembly, 41. Lifting box top, 42. First cylinder, 43. First tilting box plate, 44. Second tilting box plate, 45. Side wall plate, 46. First inner box plate, 47. Second inner box plate, 48. Second cylinder, 5. Extension platform assembly, 51. Triangular rotating member, 52. First linkage rod, 53. Third cylinder, 54. First bottom plate, 55. Second bottom plate, 6. Support arm, 7. Support assembly, 71. Triangular rotating plate, 72. Fourth cylinder, 73. First fixed seat, 74. Connecting plate, 75. Limit pin, 76. First spring, 8. Fastening assembly, 81. Second fixing seat, 82. Threaded groove, 83. Threaded pin, 84. Rotating seat, 85. Rotating column, 86. Gear, 87. Ratchet, 88. Limiting clamp, 89. Second spring, 9. Bracing assembly, 91. Threaded outer tube, 92. Rocker, 93. Bevel gear, 94. Threaded inner tube, 95. Square rod, 96. Support plate, 10. Support beam, 11. Staircase frame, 12. Fifth cylinder, 13. Guide seat, 14. Second linkage rod. DETAILED DESCRIPTION

[0018] Hereinafter, embodiments of a folding and expandable flying wing truck bed and an expansion and fastening method of the present invention will be described with reference to the accompanying drawings.

[0019] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0020] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0021] Embodiment 1: Figure 1-13A foldable and expandable flying wing truck compartment according to an embodiment of the present invention is shown, the compartment includes side beams 2 installed on both sides of a truck panel 1, the front and rear sides of the top of the truck panel 1 are fixedly connected to a lifting frame 3, a folding assembly 4 is arranged above the truck panel 1, the folding assembly 4 includes a lifting compartment top 41 fixedly connected to the top of the lifting frame 3, both sides of the inner cavity of the lifting frame 3 are fixedly connected to a first cylinder 42, the output end of the first cylinder 42 is fixedly connected to the top of the inner cavity of the lifting frame 3, both sides of the lifting compartment top 41 are rotatably connected to a first tilting compartment plate 43, the end of the first tilting compartment plate 43 away from the lifting compartment top 41 is rotatably connected to a second tilting compartment plate 44, the end of the second tilting compartment plate 44 away from the first tilting compartment plate 43 is rotatably connected to a side wall panel 45, and the truck panel 1 is provided with a folding assembly 4, and the folding assembly 4 includes a lifting compartment top 41 fixedly connected to the top of the lifting frame 3, and the lifting compartment top 41 is fixedly connected to the first cylinder 42. The front and rear sides of the top of the vehicle plate 1 are both rotatably connected to the first inner compartment plate 46, the top of the first inner compartment plate 46 is rotatably connected to the second inner compartment plate 47, a rotatable second cylinder 48 is installed on one side of the first inner compartment plate 46, and the output end of the second cylinder 48 is rotatably connected to the second inner compartment plate 47, an extension platform assembly 5 is provided on the top of the truck vehicle plate 1, the extension platform assembly 5 includes a triangular rotating member 51 rotatably connected to the front and rear ends of the truck vehicle plate 1, and the opposite sides of the two adjacent triangular rotating members 51 are fixedly connected to the first linkage rod 52, a rotatable third cylinder 53 is installed on both ends of the front and rear sides of the top of the truck vehicle plate 1, and the output end of the third cylinder 53 is rotatably connected to the triangular rotating member 51, and the top of the side beam 2 is rotatably connected to the first bottom plate 5 4, the first bottom plate 54 is rotatably connected to the second bottom plate 55 at one side away from the triangular rotating member 51, the first linkage rod 52 is rotatably connected to the first bottom plate 54 at one end away from the triangular rotating member 51, the second bottom plate 55 is rotatably connected to the side wall plate 45 at one side away from the first bottom plate 54, the front and rear ends of the side beam 2 at one side away from the truck board 1 are rotatably connected to the support arm 6, the front and rear sides of the top of the side beam 2 are fixedly connected to the guide seat 13, the surface of the guide seat 13 is slidably connected to the second linkage rod 14, the end of the second linkage rod 14 away from the guide seat 13 is rotatably connected to the support arm 6, the bottom of the support arm 6 is provided with a support assembly 7 at one side away from the side beam 2, a support crossbeam 10 is provided between the two support arms 6, and the bottom of the support arm 6 is provided with a support crossbeam 10 is a rectangular slot adapted to the support beam 10, and a fastening assembly 8 is provided on the front and rear sides of the inner cavity of the support beam 10. The fastening assembly 8 includes a second fixing seat 81 fixedly connected to the inner cavity of the support beam 10, and the inner cavity of the second fixing seat 81 is fixedly connected with a threaded groove 82. A threaded pin 83 is penetrated at the intersection of the first bottom plate 54 and the second bottom plate 55, and the threaded pin 83 penetrates to the bottom of the first bottom plate 54 and the second bottom plate 55 and is threadedly connected with the threaded groove 82. A rotatable rotating seat 84 is provided on both sides of the inner cavity of the second fixing seat 81, and a rotating column 85 is rotatably connected on both sides of the inner cavity of the second fixing seat 81. The rotating seat 84 is fixedly connected to the surface of the rotating column 85, and a gear 86 is fixedly connected to the surface of the rotating column 85, and the two gears 86 are meshed with each other.The rear end of the right rotating column 85 passes through the rear side of the second fixed seat 81 and is fixedly connected with a handle. The rear side of the surface of the left rotating column 85 is fixedly connected with a ratchet 87. The rear side of the inner cavity of the second fixed seat 81 is rotatably connected with a limit clamp 88, and the limit clamp 88 is meshed with the ratchet 87. A second spring 89 is welded to the rear side of the inner cavity of the second fixed seat 81. The top of the second spring 89 is welded to the bottom of the limit clamp 88. Through the coordinated use of the ratchet 87 and the second spring 89, the rotating column 85 plays a role of limiting and preventing reverse movement, so that the rotating seat 84 can be limited and locked after rotating to a certain angle, thereby improving the supporting stability of the rotating seat 84. The inner cavity of the rotating seat 84 is provided with a diagonal bracing assembly 9. The rear side of the truck board 1 is rotatably connected with a stair frame 11. Both ends of the rear side of the top of the truck board 1 are installed with a rotatable fifth cylinder 12, and the output end of the fifth cylinder 12 is rotatably connected with the stair frame 11.

[0022] Embodiment 2: It is basically the same as Embodiment 1, and furthermore, the support assembly 7 includes a triangular rotating plate 71 rotatably connected to one end of the bottom of the support arm 6 away from the side beam 2, a fourth cylinder 72 is fixedly installed at the bottom of the triangular rotating plate 71, a first fixed seat 73 is fixedly connected to one side of the bottom of the support arm 6 away from the side beam 2, a connecting plate 74 is fixedly connected to the surface of the fourth cylinder 72, a slidable limiting pin 75 is penetrated on one side of the first fixed seat 73, a first spring 76 is sleeved on the surface of the limiting pin 75, one end of the first spring 76 is welded to the first fixed seat 73, and the fourth cylinder 72 is fixedly connected to the connecting plate 74. The other end of a spring 76 is welded to a limit pin 75, and the limit pin 75 is inserted into the inner cavity of the connecting plate 74. Through the setting of the support assembly 7, the triangular rotating plate 71 and the fourth cylinder 72 are used in cooperation to support the end of the support arm 6 away from the side beam 2, thereby improving the support stability of the support arm 6 after unfolding. At the same time, with the cooperation of the limit pin 75 and the first fixed seat 73, the connecting plate 74 is inserted and limited, so that the fourth cylinder 72 can be rotated and folded, thereby making it easy to store the fourth cylinder 72 and prevent the truck plate 1 from vibrating during driving.

[0023] Embodiment 2: It is basically the same as Embodiment 1, and furthermore, the diagonal brace assembly 9 comprises a threaded outer tube 91 rotatably connected to the inner cavity of the rotating seat 84, a rotatable rocker 92 is provided through the front side of the rotating seat 84, a bevel gear 93 is fixedly connected to the top of the surface of the threaded outer tube 91 and the rear end of the rocker 92, the two bevel gears 93 are meshed, the embedded thread of the threaded outer tube 91 is connected to the threaded inner tube 94, the top of the inner cavity of the rotating seat 84 is fixedly connected to the square rod 95, and the threaded inner tube 94 is slidably connected to the surface of the square rod 95, The bottom end of the threaded inner tube 94 is rotatably connected to a support plate 96. Through the arrangement of the diagonal support assembly 9, the coordinated use of the rocker arm 92, the bevel gear 93 and the threaded outer tube 91 can propel the threaded inner tube 94, so that the bottom of the support plate 96 can contact the ground, so that the rotating seat 84, the threaded inner tube 94, the support plate 96 and the threaded outer tube 91 form an oblique support for the second fixed seat 81, so that the support beam 10 can provide stable support for the support arm 6 and the first base plate 54 and the second base plate 55.

[0024] A method for expanding and fastening a foldable and expandable flying wing truck compartment, the method comprises the following steps: Step 1, first drive the truck plate 1 to the use position, then rotate the support arm 6 so that the support arm 6 rotates 90 degrees and unfolds, then pull the limit pin 75, so that the limit pin 75 disengages from the inner cavity of the connecting plate 74 and compresses the limit pin 75, and the fourth cylinder 72 falls naturally after the limit is released, so that the triangular rotating plate 71 rotates 90 degrees, and then open the fourth cylinder 72, so that the output end of the fourth cylinder 72 extends out and contacts the ground, thereby supporting the end of the support arm 6 away from the side beam 2. In the process of rotating and opening the support arm 6, the support arm 6 pulls the second linkage rod 14, so that the end of the second linkage rod 14 away from the support arm 6 slides on the surface of the guide seat 13, and a triangular support is formed at the connection position between the support arm 6 and the side beam 2 through the second linkage rod 14; Step 2, the first cylinder 42 is then turned on and pushes the lifting frame 3 to extend and retract. The top of the lifting frame 3 drives the lifting box top 41 to rise upward during the rising process, so that the lifting box top 41 drives the first tilting box plate 43 and the second tilting box plate 44 to rotate. After the first cylinder 42 rises to the highest point, the third cylinder 53 is turned on and pulls the triangular rotating member 51, so that the triangular rotating member 51 rotates, and under the linkage action of the first linkage rod 52, the first bottom plate 54 is unfolded to the side away from the third cylinder 53. Since the first bottom plate 54 and the second bottom plate 55 are in a rotationally connected state, the first bottom plate 54 causes a thrust to the second bottom plate 55 toward the side away from the truck board 1 during the rotation process, so that the first bottom plate 54 and the second bottom plate 55 5 are all laid on the top of the support arm 6 to form a horizontal plane, and then the first inner compartment plate 46 is rotated so that the first inner compartment plate 46 and the second inner compartment plate 47 on the top of the truck board 1 reach the front and rear sides, and then the second cylinder 48 is opened and drives the second inner compartment plate 47 to rotate with the connection position between it and the first inner compartment plate 46 as the rotation center, so that the first inner compartment plate 46 and the second inner compartment plate 47 are in the same vertical plane, and the front and rear sides of the top of the truck board 1 are closed. At this point, with the coordinated use of the lifting compartment roof 41, the first tilting compartment plate 43, the second tilting compartment plate 44, the side wall plate 45, the first bottom plate 54, the second bottom plate 55, the first inner compartment plate 46 and the second inner compartment plate 47, a relatively closed space is formed on the top of the truck board 1; Step 3: Then the user moves the support beam 10 to the bottom of the support arm 6, and makes the front and rear ends of the support beam 10 engage in the rectangular slot at the bottom of the support arm 6, and then passes the threaded pin 83 from the connection position of the first bottom plate 54 and the second bottom plate 55 from top to bottom into the inner cavity of the support beam 10, and makes the threaded pin 83 threadably rotate in the inner cavity of the thread groove 82, at this time, the first bottom plate 54, the second bottom plate 55 and the support arm 6 are pulled and fixed; Step 4: The user then rotates the handle at the front end of the rotating column 85, so that the two gears 86 rotate at the same time. Under the transmission action of the two meshing gears 86, the two rotating seats 84 rotate in opposite directions and drive the threaded outer tube 91 to move. Then the user shakes the rocker 92. During the rotation process, the rocker 92 is meshed and driven by the two bevel gears 93, so that the threaded outer tube 91 rotates in the inner cavity of the rotating seat 84. Under the push of the internal thread of the threaded outer tube 91, the threaded inner tube 94 extends obliquely downward and drives the support plate 96 to come into contact with the ground, thereby obliquely bracing and fixing the second fixed seat 81 and the supporting beam 10. During the rotation of the rotating column 85, the ratchet 87 rotates accordingly and continuously moves the limit clamp 88. After the rotating column 85 is rotated to the right position, the limit clamp 88 engages with the ratchet 87 to limit and lock the angle of the two rotating columns 85. When disassembling, the user only needs to move the second spring 89 to release the limit on the ratchet 87 and rotate the rotating column 85 in the opposite direction.

[0025] To sum up: the foldable and expandable flying wing truck body and expansion fastening method, through the coordinated use of the side beam 2, the folding component 4 and the expansion platform component 5, enables a closed space to be built on the top of the truck board 1, and at the same time, through the coordinated use of the support arm 6 and the support component 7, the expanded platform is supported, and finally, through the coordinated use of the fastening component 8, the diagonal brace component 9 and the supporting crossbeam 10, the support arm 6 is further supported and reinforced, so as to achieve the purpose of expandable platform area, rapid expansion of the usable area and high support stability and strength.

[0026] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A foldable and expandable flying wing truck compartment, characterized in that: The carriage includes side beams 2 installed on both sides of a truck board 1, the front and rear sides of the top of the truck board 1 are fixedly connected with a lifting frame 3, a folding component 4 is arranged above the truck board 1, and an expansion platform component 5 is arranged on the top of the truck board 1. The front and rear ends of the side beams 2 away from the truck board 1 are rotatably connected with support arms 6, and a support component 7 is arranged on the side of the bottom of the support arm 6 away from the side beam 2, a support beam 10 is arranged between the two support arms 6, and a rectangular slot matched with the support beam 10 is opened at the bottom of the support arm 6, and fastening components 8 are arranged on the front and rear sides of the inner cavity of the support beam 10.

2. The foldable and expandable flying wing truck compartment according to claim 1, characterized in that: The extended platform assembly 5 includes a triangular rotating member 51 rotatably connected to the front and rear ends of the truck board 1, and the opposite sides of two adjacent triangular rotating members 51 are fixedly connected with a first linkage rod 52. A rotatable third cylinder 53 is installed at both ends of the front and rear sides of the top of the truck board 1, and the output end of the third cylinder 53 is rotatably connected to the triangular rotating member 51. The top of the side beam 2 is rotatably connected to a first bottom plate 54, and the side of the first bottom plate 54 away from the triangular rotating member 51 is rotatably connected to a second bottom plate 55, the end of the first linkage rod 52 away from the triangular rotating member 51 is rotatably connected to the first bottom plate 54, and the side of the second bottom plate 55 away from the first bottom plate 54 is rotatably connected to the side wall panel 45.

3. The foldable and expandable flying wing truck compartment according to claim 2, characterized in that: The folding assembly 4 includes a lift box top 41 fixedly connected to the top of the lift frame 3, first cylinders 42 are fixedly connected to both sides of the inner cavity of the lift frame 3, the output end of the first cylinder 42 is fixedly connected to the top of the inner cavity of the lift frame 3, first tilting box plates 43 are rotatably connected to both sides of the lift box top 41, the end of the first tilting box plate 43 away from the lift box top 41 is rotatably connected to the second tilting box plate 44, the end of the second tilting box plate 44 away from the first tilting box plate 43 is rotatably connected to the side wall plate 45, the front and rear sides of the top of the truck panel 1 are rotatably connected to the first inner box plate 46, the top of the first inner box plate 46 is rotatably connected to the second inner box plate 47, a rotatable second cylinder 48 is installed on one side of the first inner box plate 46, and the output end of the second cylinder 48 is rotatably connected to the second inner box plate 47.

4. The foldable and expandable flying wing truck compartment according to claim 3, characterized in that: The support assembly 7 includes a triangular rotating plate 71 rotatably connected to the end of the bottom of the support arm 6 away from the side beam 2, a fourth cylinder 72 is fixedly installed on the bottom of the triangular rotating plate 71, a first fixed seat 73 is fixedly connected to the side of the bottom of the support arm 6 away from the side beam 2, a connecting plate 74 is fixedly connected to the surface of the fourth cylinder 72, a slidable limit pin 75 is penetrated through one side of the first fixed seat 73, a first spring 76 is sleeved on the surface of the limit pin 75, one end of the first spring 76 is welded to the first fixed seat 73, the other end of the first spring 76 is welded to the limit pin 75, and the limit pin 75 is inserted into the inner cavity of the connecting plate 74.

5. The foldable and expandable flying wing truck compartment according to claim 4, characterized in that: The rear side of the truck board 1 is rotatably connected to a stair frame 11 , and both ends of the rear side of the top of the truck board 1 are installed with a rotatable fifth cylinder 12 , and the output end of the fifth cylinder 12 is rotatably connected to the stair frame 11 .

6. The foldable and expandable flying wing truck compartment according to claim 5, characterized in that: The fastening assembly 8 includes a second fixing seat 81 fixedly connected to the inner cavity of the supporting beam 10, the inner cavity of the second fixing seat 81 is fixedly connected with a threaded groove 82, a threaded pin 83 is provided through the intersection of the first bottom plate 54 and the second bottom plate 55, the threaded pin 83 penetrates to the bottom of the first bottom plate 54 and the second bottom plate 55 and is threadedly connected with the threaded groove 82, rotatable rotating seats 84 are provided on both sides of the inner cavity of the second fixing seat 81, the inner cavity of the rotating seat 84 is provided with a diagonal bracing assembly 9, and rotating columns 85 are rotatably connected to the inner cavity of the second fixing seat 81. 84 is fixedly connected to the surface of the rotating column 85, and a gear 86 is fixedly connected to the surface of the rotating column 85, and the two gears 86 are meshed with each other. The rear side end of the rotating column 85 on the right side penetrates to the rear side of the second fixed seat 81 and is fixedly connected with a handle, and the rear side of the surface of the rotating column 85 on the left side is fixedly connected with a ratchet 87. The rear side of the inner cavity of the second fixed seat 81 is rotatably connected with a limiting clamp 88, and the limiting clamp 88 is meshed with the ratchet 87. A second spring 89 is welded to the rear side of the inner cavity of the second fixed seat 81, and the top of the second spring 89 is welded to the bottom of the limiting clamp 88.

7. The foldable and expandable flying wing truck compartment according to claim 6, characterized in that: The diagonal support assembly 9 includes a threaded outer tube 91 rotatably connected to the inner cavity of a rotating seat 84, a rotatable rocker 92 is penetrated through the front side of the rotating seat 84, a bevel gear 93 is fixedly connected to the top of the surface of the threaded outer tube 91 and the rear end of the rocker 92, the two bevel gears 93 are meshed with each other, and the embedded thread of the threaded outer tube 91 is connected to a threaded inner tube 94.

8. The foldable and expandable flying wing truck compartment according to claim 7, characterized in that: A square rod 95 is fixedly connected to the top of the inner cavity of the rotating seat 84 , the threaded inner tube 94 is slidably connected to the surface of the square rod 95 , and a support plate 96 is rotatably connected to the bottom end of the threaded inner tube 94 .

9. The foldable and expandable flying wing truck compartment according to claim 8, characterized in that: The front and rear sides of the top of the side beam 2 are fixedly connected with a guide seat 13 , and the surface of the guide seat 13 is slidably connected with a second linkage rod 14 , and one end of the second linkage rod 14 away from the guide seat 13 is rotatably connected to the support arm 6 .

10. A method for expanding and fastening a foldable and expandable flying wing truck compartment, which is applied to the foldable and expandable flying wing truck compartment according to claim 9, characterized in that: The steps of the expansion and tightening method are as follows: Step 1, first drive the truck plate 1 to the use position, then rotate the support arm 6 so that the support arm 6 rotates 90 degrees and unfolds, then pull the limit pin 75, so that the limit pin 75 disengages from the inner cavity of the connecting plate 74 and compresses the limit pin 75, and the fourth cylinder 72 falls naturally after the limit is released, so that the triangular rotating plate 71 rotates 90 degrees, and then open the fourth cylinder 72, so that the output end of the fourth cylinder 72 extends out and contacts the ground, thereby supporting the end of the support arm 6 away from the side beam 2. In the process of rotating and opening the support arm 6, the support arm 6 pulls the second linkage rod 14, so that the end of the second linkage rod 14 away from the support arm 6 slides on the surface of the guide seat 13, and a triangular support is formed at the connection position between the support arm 6 and the side beam 2 through the second linkage rod 14; Step 2, the first cylinder 42 is then turned on and pushes the lifting frame 3 to extend and retract. The top of the lifting frame 3 drives the lifting box top 41 to rise upward during the rising process, so that the lifting box top 41 drives the first tilting box plate 43 and the second tilting box plate 44 to rotate. After the first cylinder 42 rises to the highest point, the third cylinder 53 is turned on and pulls the triangular rotating member 51, so that the triangular rotating member 51 rotates, and under the linkage action of the first linkage rod 52, the first bottom plate 54 is unfolded to the side away from the third cylinder 53. Since the first bottom plate 54 and the second bottom plate 55 are in a rotationally connected state, the first bottom plate 54 causes a thrust to the second bottom plate 55 toward the side away from the truck board 1 during the rotation process, so that the first bottom plate 54 and the second bottom plate 55 5 are all laid on the top of the support arm 6 to form a horizontal plane, and then the first inner compartment plate 46 is rotated so that the first inner compartment plate 46 and the second inner compartment plate 47 on the top of the truck board 1 reach the front and rear sides, and then the second cylinder 48 is opened and drives the second inner compartment plate 47 to rotate with the connection position between it and the first inner compartment plate 46 as the rotation center, so that the first inner compartment plate 46 and the second inner compartment plate 47 are in the same vertical plane, and the front and rear sides of the top of the truck board 1 are closed. At this point, with the coordinated use of the lifting compartment roof 41, the first tilting compartment plate 43, the second tilting compartment plate 44, the side wall plate 45, the first bottom plate 54, the second bottom plate 55, the first inner compartment plate 46 and the second inner compartment plate 47, a relatively closed space is formed on the top of the truck board 1; Step 3: Then the user moves the support beam 10 to the bottom of the support arm 6, and makes the front and rear ends of the support beam 10 engage in the rectangular slot at the bottom of the support arm 6, and then passes the threaded pin 83 from the connection position of the first bottom plate 54 and the second bottom plate 55 from top to bottom into the inner cavity of the support beam 10, and makes the threaded pin 83 threadably rotate in the inner cavity of the thread groove 82, at this time, the first bottom plate 54, the second bottom plate 55 and the support arm 6 are pulled and fixed; Step 4: The user then rotates the handle at the front end of the rotating column 85, so that the two gears 86 rotate at the same time. Under the transmission action of the two meshing gears 86, the two rotating seats 84 rotate in opposite directions and drive the threaded outer tube 91 to move. Then the user shakes the rocker 92. During the rotation process, the rocker 92 is meshed and driven by the two bevel gears 93, so that the threaded outer tube 91 rotates in the inner cavity of the rotating seat 84. Under the push of the internal thread of the threaded outer tube 91, the threaded inner tube 94 extends obliquely downward and drives the support plate 96 to come into contact with the ground, thereby obliquely bracing and fixing the second fixed seat 81 and the supporting beam 10. During the rotation of the rotating column 85, the ratchet 87 rotates accordingly and continuously moves the limit clamp 88. After the rotating column 85 is rotated to the right position, the limit clamp 88 engages with the ratchet 87 to limit and lock the angle of the two rotating columns 85. When disassembling, the user only needs to move the second spring 89 to release the limit on the ratchet 87 and rotate the rotating column 85 in the opposite direction.

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