Lightweight semitrailer frame

Abstract

The invention belongs to the technical field of semitrailers, and discloses a lightweight semitrailer frame. Comprising a frame body, a top frame is fixedly connected to the top end of one side of the frame body, first door plates are rotatably connected to the top ends of the two sides of the frame body through rotating shafts, a second door plate is rotatably connected to the side, away from the top frame, of the frame body through rotating shafts, and a fixing sleeve is fixedly connected to the bottom of the frame body. When the position of a cylindrical cargo needs to be fixed, a rotating motor is started to drive a rotating shaft and a first gear to rotate, and the first gear drives two groups of first racks, second racks, second gears, long rods, connecting blocks and fixing plates to operate at the same time, so that the two groups of fixing plates can overturn towards the center at the same time; the two sides of the cylindrical goods can be fixed by turning the two sets of fixing plates towards the center, and the problem that the cylindrical goods are prone to falling off when conveyed by the frame of the semitrailer is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of semi-trailers, and more particularly to a lightweight semi-trailer frame. Background Art

[0002] A semi-trailer is a vehicle specially used for transporting goods. It is mainly composed of a tractor and a frame. The frame is the area used to load goods. Semi-trailers are mainly used for long-distance freight and large-scale cargo transportation, such as container transportation, transportation of bulk goods such as coal and ore, etc. It is very common in road transportation and is an indispensable and important tool in the logistics industry.

[0003] The frame of a semi-trailer is mainly composed of multiple sets of steel beams and door panels. By welding multiple sets of steel beams, the basic framework of the frame can be formed, and the goods can be loaded on the vehicle panels. By setting multiple sets of door panels, the stacking position of the goods can be determined when loading the goods, and at the same time, it is beneficial to improve the unloading efficiency of the goods when unloading the goods.

[0004] In the prior art, when a semi-trailer frame is used to transport cylindrical cargo, since the cross-section of the cylindrical cargo is circular, the cylindrical cargo is easily caused to slide when mounted on the semi-trailer frame. When the semi-trailer is driving, the acceleration and braking of the semi-trailer easily cause the cylindrical cargo to shift due to inertia, which easily causes the cylindrical cargo to fall off. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a lightweight semi-trailer frame.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lightweight semi-trailer frame, comprising a frame body, a top frame is fixedly connected to the top of one side of the frame body, the tops of both sides of the frame body are rotatably connected to first door panels via a rotating shaft, a side of the frame body away from the top frame is rotatably connected to a second door panel via a rotating shaft, a fixing sleeve is fixedly connected to the bottom of the frame body, an axle is slidably connected to the inner wall of the fixing sleeve, wheels are fixedly connected to both ends of the axle, and also comprises a fixing component for fixing cylindrical cargo, the fixing component is arranged at the top of the frame body, water collecting components for collecting rainwater are arranged on both sides of the frame body, a cooling component for reducing the temperature of wheel brake pads is arranged below the frame body, a supporting component for facilitating unloading is arranged on the side of the second door panel away from the frame body, and a positioning component for fixing the wheel position is arranged at the bottom of the second door panel.

[0007] Further, the fixing assembly includes a rotating motor, which is fixedly connected to the bottom of the frame body, and the output end of the rotating motor is fixedly connected to a rotating shaft, and the rotating shaft passes through the inner wall of the frame body, and the top of the rotating shaft is fixedly connected to a first gear, and one side of the first gear is meshed with a first rack, and the side of the first rack away from the first gear is fixedly connected to a second rack, and the bottom of the second rack is fixedly connected to a sliding bar, and a sliding groove is provided at the bottom of the inner wall of the frame body, and the sliding bar is slidably connected to the inner wall of the sliding groove, and the top of the second rack is meshed with a second gear, and a long rod is fixedly connected to the center of the second gear, and a sleeve is fixedly connected to the top of the inner wall of the frame body, and the long rod is rotatably connected to the inner wall of the sleeve, and a connecting block is fixedly connected to the outer wall of the long rod, and the top of the connecting block is fixedly connected to a fixing plate, and the top of the fixing plate is provided with an arc groove, and one side of the fixing plate is fixedly connected to a sealing gasket, and the fixing assembly is provided with two groups, which are symmetrically distributed on both sides of the first gear, and an arc block is provided at the top of one side of the frame body.

[0008] Furthermore, the water collecting assembly includes a water tank, which is fixedly connected to both sides of the frame body, an inclined groove is provided at the top of the frame body, a frame plate is provided on the inner wall of the inclined groove, a plurality of groups of square holes are provided at the top of the frame plate, the inner wall of the frame plate is filled with a filter layer, filter holes are provided at the bottom of the frame plate, a round tube is fixedly connected to the bottom of the inclined groove, the bottom of the round tube is fixedly connected to the top of the water tank, an outlet pipe is fixedly connected to the bottom of the water tank, and a valve is fixedly connected to the outer wall of the outlet pipe.

[0009] Furthermore, the cooling component includes a transmission pipe, which is fixedly connected to the bottom of the water tank, and a square box is fixedly connected to the bottom of the transmission pipe, and the square box is fixedly connected to the bottom of the frame body, and a water spray pipe is fixedly connected to the bottom of the square box, and the opening of the water spray pipe faces the brake pad of the wheel, and an L-shaped plate is fixedly connected to the side of the square box away from the second door panel, and a sliding rod is slidably connected to one side of the L-shaped plate, and a circular plate is fixedly connected to the outer wall of the sliding rod, and the circular plate is arranged on one side of the square box, and a spring is fixedly connected to the side of the circular plate away from the square box, and the other end of the spring is fixedly connected to one side of the L-shaped plate, and one end of the sliding rod away from the L-shaped plate extends into the inner wall of the square box, and the end of the sliding rod extending into the inner wall of the square box is fixedly connected to a stopper, and the bottom of the stopper is fixedly connected to a pad, and the stopper and the padper are arranged at the top of the water spray pipe.

[0010] Furthermore, the support assembly includes a bottom block, which is rotatably connected to the side of the second door panel away from the frame body through a rotating shaft, a support plate is fixedly connected to one side of the bottom block, the top of the support plate is inclined, the top of the support plate is tightly attached to the bottom of the second door panel, two groups of mounting grooves are opened on both sides of the bottom block, and magnets are fixedly connected to the inner walls of the mounting grooves.

[0011] Further, the positioning assembly includes a first connecting rod, the first connecting rod is rotatably connected to the bottom of the second door panel, the end of the first connecting rod away from the second door panel is rotatably connected to the second connecting rod, the end of the second connecting rod away from the first connecting rod is rotatably connected to a stabilizing block, the stabilizing block is arranged on one side of the wheel, a sliding frame is fixedly connected to the bottom of one side of the frame body, a sliding block is fixedly connected to one side of the stabilizing block, the sliding block is slidably connected to the inner wall of the sliding frame, the shape of the sliding block is square, the side of the sliding block away from the stabilizing block is fixedly connected to a limiting plate, the limiting plate is arranged on one side of the sliding frame, and the sliding frame is inclined.

[0012] The technical effects and advantages of a lightweight semi-trailer frame of the present invention are as follows:

[0013] (1) By setting a fixing component, when the position of the cylindrical cargo needs to be fixed, the rotating motor is started to drive the rotating shaft and the first gear to rotate, and the first gear drives the two sets of first racks, second racks, second gears, long rods, connecting blocks and fixing plates to run simultaneously, so that the two sets of fixing plates can be flipped toward the center at the same time. The two sets of fixing plates can be flipped toward the center to fix the two sides of the cylindrical cargo, thereby solving the problem that the semi-trailer frame is prone to falling off when transporting cylindrical cargo.

[0014] (2) By setting up a water collection component, rainwater can be collected and filtered on rainy days, providing an emergency water source for the driver during long-distance transportation. By setting up a cooling component, the water collected in the water tank can flow into the square box. When the semi-trailer brakes during transportation, part of the water in the square box can flow out to cool the brake pads of the semi-trailer.

[0015] (3) By setting up a support assembly, when loading and unloading goods, the second door panel can be flipped over so that the support assembly can provide stable support for the second door panel, so that the second door panel can be kept in a downward tilted state, which is beneficial for loading and unloading goods. By setting up a positioning assembly, when the second door panel is flipped downward, the position of the two sets of wheels at the rear can be fixed by the positioning assembly to prevent the vehicle from slipping during loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall first cross-sectional structure of the present invention.

[0018] Figure 3 for Figure 2 A is an enlarged structural diagram of FIG.

[0019] Figure 4 It is a schematic diagram of the bottom of the fixing component in the present invention.

[0020] Figure 5 It is a schematic diagram of the split structure of the fixed component in the present invention.

[0021] Figure 6 It is a partial cross-sectional schematic diagram of the frame body in the present invention.

[0022] Figure 7 It is a schematic diagram of the overall second cross-sectional structure of the present invention.

[0023] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at B.

[0024] Fig. 9 It is a schematic cross-sectional view of a square box in the present invention.

[0025] Fig.10 It is a schematic diagram of the support assembly and the positioning assembly in the present invention.

[0026] In the figure:

[0027] 1. Frame body; 2. Top frame; 3. First door panel; 4. Second door panel; 5. Fixed sleeve; 6. Axle; 7. Wheel; 8. Rotating motor; 9. First gear; 10. First rack; 11. Second rack; 12. Slide; 13. Slide; 14. Second gear; 15. Long rod; 16. Connecting block; 17. Fixed plate; 18. Sleeve; 19. Sealing pad; 20. Arc block; 21. Frame plate; 22. Square shaped hole; 23, round tube; 24, water storage tank; 25, water outlet pipe; 26, valve; 27, transmission pipe; 28, square box; 29, water spray pipe; 30, L-shaped plate; 31, slide rod; 32, spring; 33, disc; 34, stopper; 35, bottom block; 36, support plate; 37, mounting groove; 38, magnet; 40, first connecting rod; 42, second connecting rod; 43, stabilizing block; 44, slide frame; 45, slider. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] Reference Figure 1-10A lightweight semi-trailer frame comprises a frame body 1, a top frame 2 is fixedly connected to the top of one side of the frame body 1, a first door panel 3 is rotatably connected to the top of both sides of the frame body 1 through a rotating shaft, a second door panel 4 is rotatably connected to the side of the frame body 1 away from the top frame 2 through a rotating shaft, a fixing sleeve 5 is fixedly connected to the bottom of the frame body 1, an axle 6 is slidably connected to the inner wall of the fixing sleeve 5, wheels 7 are fixedly connected to both ends of the axle 6, and a fixing component for fixing cylindrical goods is also included, the fixing component is arranged at the top of the frame body 1, water collecting components for collecting rainwater are arranged on both sides of the frame body 1, a cooling component for reducing the temperature of the brake pads of the wheels 7 is arranged below the frame body 1, a support component for facilitating unloading is arranged on the side of the second door panel 4 away from the frame body 1, and a positioning component for fixing the position of the wheels 7 is arranged at the bottom of the second door panel 4.

[0031] In order to solve the problem that cylindrical cargo is easy to fall off when transporting on the frame of the semi-trailer, when the cylindrical cargo needs to be loaded, the first door panel 3 and the second door panel 4 can be flipped to open the first door panel 3 and the second door panel 4, and then the cylindrical cargo is hoisted or transported to the top of the frame body 1. By setting a fixing component, the position of the cylindrical cargo can be fixed after the cylindrical cargo is placed in the specified position, thereby preventing the cylindrical cargo from shifting during transportation. By setting a water collection component, rainwater can be collected and filtered on rainy days, which can provide the driver with a safe place to transport the cylindrical cargo for long distances. An emergency water source is provided. By setting a cooling component, the brake pads of the semi-trailer can be cooled when the semi-trailer brakes during transportation. By setting a supporting component, when loading and unloading cylindrical goods, the second door panel 4 can be flipped to make the supporting component flip down to the ground, and support can be provided for the second door panel 4 to keep the second door panel 4 in a downwardly tilted state, which is beneficial for loading and unloading of goods. By setting a positioning component, when the second door panel 4 is flipped downward, the positions of the two sets of wheels 7 at the rear can be fixed by the positioning component to prevent the vehicle from slipping when loading and unloading goods.

[0032] Reference Figure 3-6The fixing assembly includes a rotating motor 8, which is fixedly connected to the bottom of the frame body 1. The output end of the rotating motor 8 is fixedly connected to a rotating shaft, which penetrates the inner wall of the frame body 1. The top of the rotating shaft is fixedly connected to a first gear 9. A first rack 10 is meshed on one side of the first gear 9. A second rack 11 is fixedly connected to the side of the first rack 10 away from the first gear 9. A slide bar 12 is fixedly connected to the bottom of the second rack 11. A slide groove 13 is provided at the bottom of the inner wall of the frame body 1. The slide bar 12 is slidably connected to the inner wall of the slide groove 13. The second rack A second gear 14 is meshed at the top of 11, a long rod 15 is fixed at the center of the second gear 14, a sleeve 18 is fixed to the top of the inner wall of the frame body 1, the long rod 15 is rotatably connected to the inner wall of the sleeve 18, a connecting block 16 is fixed to the outer wall of the long rod 15, a fixing plate 17 is fixed to the top of the connecting block 16, an arc groove is provided at the top of the fixing plate 17, a sealing gasket 19 is fixed to one side of the fixing plate 17, two groups of the fixing components are provided, and are symmetrically distributed on both sides of the first gear 9, and an arc block 20 is provided at the top of one side of the frame body 1.

[0033] When it is necessary to fix the position of the cylindrical cargo, the cylindrical cargo can be placed on the top of the frame body 1 by hoisting or the like, and moved to the top of the arc block 20, and the top of the arc block 20 can be conducive to fixing the position of the cylindrical cargo, and then the rotating motor 8 is started, and the rotating shaft is driven to rotate by the rotating motor 8. When the rotating shaft rotates, it drives the first gear 9 at the top to rotate. When the first gear 9 rotates, it drives the two groups of meshing first racks 10 on both sides to move in opposite directions respectively. When the first rack 10 is displaced, it drives the second rack 11 set on one side to move together. By setting a slide bar 12 at the bottom of the second rack 11, the slide bar 12 can be driven to slide on the inner wall of the slide groove 13 when the second rack 11 moves, so that the first rack 10 and the moving trajectory of the second rack 11 are limited. When the second rack 11 moves, the second gear 14 meshing at the top will be driven to rotate. When the second gear 14 rotates, the long rod 15 will be driven to rotate. By setting the sleeve 18, the position of the long rod 15 can be set on the inner wall of the frame body 1. When the long rod 15 rotates, the connecting block 16 and the fixing plate 17 on one side will be driven to rotate together, so that the fixing plate 17 will flip upward, and the two groups of first racks 10, second racks 11, second gears 14, long rods 15, connecting blocks 16 and fixing plates 17 will be driven by a group of first gears 9 at the same time, so that the two groups of fixing plates 17 can be flipped toward the center at the same time, and the two sides of the cylindrical cargo can be fixed by flipping the two groups of fixing plates 17.

[0034] Reference Figure 7-8The water collecting assembly includes a water tank 24, which is fixedly connected to both sides of the frame body 1. An inclined groove is provided at the top of the frame body 1, and a frame plate 21 is provided on the inner wall of the inclined groove. A plurality of groups of square holes 22 are provided at the top of the frame plate 21. The inner wall of the frame plate 21 is filled with a filter layer, and filter holes are provided at the bottom of the frame plate 21. A circular tube 23 is fixedly connected to the bottom of the inclined groove, and the bottom of the circular tube 23 is fixedly connected to the top of the water tank 24. A water outlet pipe 25 is fixedly connected to the bottom of the water tank 24, and a valve 26 is fixedly connected to the outer wall of the water outlet pipe 25.

[0035] On rainy days, precipitation will flow into the frame plate 21 through the chute. By setting a plurality of groups of square holes 22 at the top of the frame plate 21, larger impurities can be isolated through the square holes 22. After flowing into the frame plate 21, the rainwater can be filtered through the filter layer in the frame plate 21, and the plurality of groups of filter holes set at the bottom of the frame plate 21 can retain smaller impurities in the frame plate 21. After the filtered rainwater passes through the filter holes, it will flow downward into the water tank 24 through the circular pipe 23. When the driver needs to use water, the valve 26 can be opened, and then the rainwater in the water tank 24 will flow downward through the outlet pipe 25.

[0036] Reference Figure 7-9 The cooling component includes a transmission pipe 27, which is fixed to the bottom of the water tank 24. A square box 28 is fixed to the bottom of the transmission pipe 27. The square box 28 is fixed to the bottom of the frame body 1. A water spray pipe 29 is fixed to the bottom of the square box 28. The opening of the water spray pipe 29 faces the brake pad of the wheel 7. An L-shaped plate 30 is fixed to the side of the square box 28 away from the second door panel 4. A sliding rod 31 is slidably connected to one side of the L-shaped plate 30. The sliding rod 31 A disc 33 is fixedly connected to the outer wall of the square box 28, and the disc 33 is arranged on one side of the square box 28. A spring 32 is fixedly connected to the side of the disc 33 away from the square box 28, and the other end of the spring 32 is fixedly connected to one side of the L-shaped plate 30. One end of the slide rod 31 away from the L-shaped plate 30 extends into the inner wall of the square box 28, and one end of the slide rod 31 extending into the inner wall of the square box 28 is fixedly connected to a stopper 34, and a pad is fixedly connected to the bottom of the stopper 34. The stopper 34 and the pad are arranged at the top end of the water spray pipe 29.

[0037] After the purified rainwater enters the water storage tank 24, the water in the water storage tank 24 will flow downward into the square box 28 through the transmission pipe 27 arranged at the bottom of the water storage tank 24. The block 34 arranged in the square box 28 can block the top of the water spray pipe 29, so that the water flow cannot enter the water spray pipe 29 from the square box 28. When the semi-trailer brakes, the block 34 and the slide bar 31 will slide to one side by inertia. When the block 34 slides to one side, it will move away from the top of the water spray pipe 29, so that the water in the square box 28 can flow downward through the water spray pipe 29, so that the water flow On the brake pad, the brake pad on the wheel 7 is water-cooled, and when the block 34 and the slide bar 31 move to one side, the disc 33 on the outer wall of the slide bar 31 pushes the spring 32 to move to one side, thereby squeezing the spring 32, and after the semi-trailer stops, the spring 32 will reset and push the disc 33 to one side to reset. When the disc 33 resets, it will drive the slide bar 31 and the block 34 to reset to one side together, and move the block 34 to the top of the water spray pipe 29, and the top of the water spray pipe 29 can be sealed by the pad at the bottom of the block 34.

[0038] Reference Fig.10 The support assembly includes a bottom block 35, which is rotatably connected to the side of the second door panel 4 away from the frame body 1 through a rotating shaft. A support plate 36 is fixedly connected to one side of the bottom block 35. The top of the support plate 36 is inclined. The top of the support plate 36 is tightly attached to the bottom of the second door panel 4. Two groups of mounting grooves 37 are opened on both sides of the bottom block 35, and magnets 38 are fixedly connected to the inner walls of the mounting grooves 37.

[0039] When loading and unloading is required, the second door panel 4 can be flipped downward. When the second door panel 4 is flipped downward, the bottom block 35 will be driven to flip downward together until the bottom of the bottom block 35 contacts the ground. When the bottom block 35 flips, the support plate 36 inclined on one side will be driven to flip together, and when the bottom block 35 contacts the ground, the top of the support plate 36 can be made to rest against the bottom of the second door panel 4, so that the position of the second door panel 4 can be fixed, and the support plate 36 and the bottom block 35 can be used to form a stable support, which can facilitate the loading and unloading of goods through the second door panel 4 and the bottom block 35. After the goods are loaded, the second door panel 4 and the bottom block 35 can be flipped until the mounting grooves 37 set on both sides of the bottom block 35 are flipped to the top of the two groups of second door panels 4, and the magnets 38 set in the mounting grooves 37 can be adsorbed to the top of the second door panel 4, thereby fixing the position of the bottom block 35.

[0040] Reference Fig.10The positioning assembly includes a first connecting rod 40, which is rotatably connected to the bottom of the second door panel 4, and the end of the first connecting rod 40 away from the second door panel 4 is rotatably connected to the second connecting rod 42, and the end of the second connecting rod 42 away from the first connecting rod 40 is rotatably connected to a stabilizing block 43, and the stabilizing block 43 is arranged on one side of the wheel 7. A sliding frame 44 is fixedly connected to the bottom of one side of the frame body 1, and a slider 45 is fixedly connected to one side of the stabilizing block 43. The slider 45 is slidably connected to the inner wall of the sliding frame 44, and the shape of the slider 45 is square, and a side of the slider 45 away from the stabilizing block 43 is fixedly connected to a limiting plate, and the limiting plate is arranged on one side of the sliding frame 44, and the sliding frame 44 is inclined.

[0041] When the second door panel 4 flips downward, the first connecting rod 40 and the second connecting rod 42 can be driven to rotate together. Since the first connecting rod 40 and the second connecting rod 42 lose the pulling force on the stabilizing block 43 when the second door panel 4 flips downward, the stabilizing block 43 can be moved downward by gravity. By providing a slider 45 on one side of the stabilizing block 43, the slider 45 can slide in the slide frame 44 when the stabilizing block 43 moves downward to limit the moving trajectory of the stabilizing block 43. By providing a limiting piece on one side of the slider 45, the slider 45 can be prevented from escaping from the slide frame 44. The stabilizing block 43 moves obliquely with the slider 45. The first and second connecting rods 40 and 42 are used to pull the stabilizing block 43 upwards, and the slider 45 is driven to slide in the slide frame 44. The slider 45 is square and can simultaneously drive the stabilizing block 43 to move obliquely upwards, thereby removing the stabilizing block 43 from one side of the wheel 7.

[0042] Working principle: In order to solve the problem that cylindrical goods are prone to falling off when being transported by the frame of the semi-trailer, when the cylindrical goods need to be loaded, the first door panel 3 and the second door panel 4 can be flipped to open the first door panel 3 and the second door panel 4, and then the cylindrical goods are hoisted or transported to the top of the frame body 1, and the rotating shaft and the first gear 9 are driven to rotate by starting the rotating motor 8. When the first gear 9 rotates, it will drive the two groups of first racks 10 meshing on both sides to move in opposite directions respectively. The first rack 10 will drive the second rack 11 to move together. When the second rack 11 moves, it drives the slide bar 12 to slide on the inner wall of the slide groove 13, so that the moving trajectory of the first rack 10 and the second rack 11 can be limited. When the second rack 11 moves, it will drive the second rack 11 to move. The wheel 14 and the long rod 15 rotate. When the long rod 15 rotates, the connecting block 16 and the fixing plate 17 are driven to rotate together, so that the fixing plate 17 is turned upward, and the two groups of first racks 10, the second racks 11, the second gear 14, the long rod 15, the connecting block 16 and the fixing plate 17 are driven by a group of first gears 9 at the same time, so that the two groups of fixing plates 17 can be turned toward the center at the same time, thereby fixing the two sides of the cylindrical goods to prevent the cylindrical goods from being displaced during transportation. On rainy days, precipitation will flow into the frame plate 21 through the chute. By arranging multiple groups of square holes 22 at the top of the frame plate 21, larger impurities can be isolated through the square holes 22, and after the water flows into the frame plate 21, the rainwater can be filtered through the filter layer in the frame plate 21. The filter treatment is carried out, and several groups of filter holes arranged at the bottom of the frame plate 21 can trap smaller impurities in the frame plate 21. After the filtered rainwater passes through the filter holes, it will flow downward into the water storage tank 24 through the round pipe 23. When the driver needs to use water, the valve 26 can be opened, and then the rainwater in the water storage tank 24 will flow downward through the outlet pipe 25, which can provide an emergency water source for the driver during long-distance transportation. After the purified rainwater enters the water storage tank 24, it will flow downward into the square box 28 through the transmission pipe 27. The block 34 arranged in the square box 28 can block the top of the water spray pipe 29, so that the water flow cannot enter the water spray pipe 29 from the square box 28. When the semi-trailer brakes, the block 34 and the slide bar 31 will move to one side by inertia. When the block 34 slides to one side, it will move away from the top of the water spray pipe 29, so that the water in the square box 28 can flow downward through the water spray pipe 29, so that the water flows on the brake pads and the brake pads on the wheels 7 are cooled by water. When the block 34 and the slide bar 31 move to one side, the disc 33 on the outer wall of the slide bar 31 pushes the spring 32 to move to one side, thereby squeezing the spring 32. After the semi-trailer stops, the spring 32 will reset and push the disc 33 to one side to reset. When the disc 33 resets, it will drive the slide bar 31 and the block 34 to reset to one side together, and move the block 34 to the top of the water spray pipe 29. The top of the water spray pipe 29 can be sealed by the pad at the bottom of the block 34. When loading and unloading is required,The second door panel 4 can be flipped downward. When the second door panel 4 is flipped downward, the bottom block 35 will be flipped downward together until the bottom of the bottom block 35 contacts the ground. When the bottom block 35 is flipped, the support plate 36 inclined on one side will be flipped together. When the bottom block 35 contacts the ground, the top of the support plate 36 can be pressed against the bottom of the second door panel 4, so that the position of the second door panel 4 can be fixed, and the support plate 36 and the bottom block 35 form a stable support, which is conducive to loading and unloading of goods through the second door panel 4 and the bottom block 35. When the second door panel 4 flips downward, the first connecting rod 40 and the second connecting rod 42 can be driven to rotate together. Since the first connecting rod 40 and the second connecting rod 42 lose the pulling force on the stabilizing block 43 when the second door panel 4 flips downward, the stabilizing block 43 can be moved downward by gravity. By providing a slider 45 on one side of the stabilizing block 43, when the stabilizing block 43 moves downward, the slider 45 can slide in the slide frame 44 to limit the moving trajectory of the stabilizing block 43. By providing a limiting piece on one side of the slider 45, To prevent the slider 45 from escaping from the slide frame 44, the stabilizing block 43 slides obliquely downward along with the slider 45 until the stabilizing block 43 slides obliquely downward to one side of the wheel 7. The stabilizing block 43 can be used to fix the positions of the two sets of wheels 7 to prevent the semi-trailer from slipping during loading and unloading. After the cargo is loaded, the second door panel 4 can be flipped upward, thereby driving the first connecting rod 40 and the second connecting rod 42 to flip one day, and the stabilizing block 43 is pulled upward by the first connecting rod 40 and the second connecting rod 42. When the stabilizing block 43 is subjected to tension When the second door panel 4 is turned upward, the bottom block 35 is driven to move upward together with the slider 45 in the slider frame 44. The slider 45 is square and can simultaneously drive the stabilizing block 43 to move diagonally upward, thereby removing the stabilizing block 43 from one side of the wheel 7. When the second door panel 4 is turned upward, the bottom block 35 is driven to move upward together and turn over until the mounting grooves 37 set on both sides of the bottom block 35 turn over to the top of the two sets of second door panels 4. The magnets 38 set in the mounting grooves 37 can be adsorbed to the top of the second door panel 4, thereby fixing the position of the bottom block 35.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A lightweight semi-trailer frame, comprising a frame body (1), a top frame (2) is fixedly connected to the top of one side of the frame body (1), a first door panel (3) is rotatably connected to the top of both sides of the frame body (1) via a rotating shaft, a second door panel (4) is rotatably connected to the side of the frame body (1) away from the top frame (2) via a rotating shaft, a fixing sleeve (5) is fixedly connected to the bottom of the frame body (1), an axle (6) is slidably connected to the inner wall of the fixing sleeve (5), and wheels (7) are fixedly connected to both ends of the axle (6), characterized in that: The vehicle further comprises a fixing assembly for fixing cylindrical cargo, the fixing assembly being arranged at the top of the vehicle frame body (1), water collecting assemblies for collecting rainwater being arranged on both sides of the vehicle frame body (1), a cooling assembly for reducing the temperature of the brake pads of the wheels (7) being arranged below the vehicle frame body (1), a supporting assembly for facilitating unloading being arranged on the side of the second door panel (4) away from the vehicle frame body (1), and a positioning assembly for fixing the position of the wheels (7) being arranged at the bottom of the second door panel (4).

2. A lightweight semi-trailer frame according to claim 1, characterized in that: The fixing assembly comprises a rotating motor (8), the rotating motor (8) is fixedly connected to the bottom of the frame body (1), the output end of the rotating motor (8) is fixedly connected to a rotating shaft, the rotating shaft penetrates the inner wall of the frame body (1), the top end of the rotating shaft is fixedly connected to a first gear (9), one side of the first gear (9) is meshed with a first rack (10), the side of the first rack (10) away from the first gear (9) is fixedly connected to a second rack (11), the bottom of the second rack (11) is fixedly connected to a sliding bar (12), the bottom of the inner wall of the frame body (1) is provided with a sliding groove (13), the sliding bar (12) is slidably connected to the inner wall of the sliding groove (13), and the second rack (11) is fixedly connected to the inner wall of the sliding groove (13). The top of the frame body (1) is meshed with a second gear (14), a long rod (15) is fixedly connected to the center of the second gear (14), a sleeve (18) is fixedly connected to the top of the inner wall of the frame body (1), the long rod (15) is rotatably connected to the inner wall of the sleeve (18), a connecting block (16) is fixedly connected to the outer wall of the long rod (15), a fixing plate (17) is fixedly connected to the top of the connecting block (16), an arc groove is provided at the top of the fixing plate (17), a sealing gasket (19) is fixedly connected to one side of the fixing plate (17), two groups of the fixing components are provided, and are symmetrically distributed on both sides of the first gear (9), and an arc block (20) is provided at the top of one side of the frame body (1).

3. A lightweight semi-trailer frame according to claim 2, characterized in that: The water collection component comprises a water storage tank (24), the water storage tank (24) is fixedly connected to both sides of the frame body (1), the top of the frame body (1) is provided with an inclined groove, the inner wall of the inclined groove is provided with a frame plate (21), the top of the frame plate (21) is provided with a plurality of groups of square holes (22), the inner wall of the frame plate (21) is filled with a filter layer, the bottom of the frame plate (21) is provided with filter holes, the bottom of the inclined groove is fixedly connected to a circular tube (23), the bottom of the circular tube (23) is fixedly connected to the top of the water storage tank (24), the bottom of the water storage tank (24) is fixedly connected to a water outlet pipe (25), and the outer wall of the water outlet pipe (25) is fixedly connected to a valve (26).

4. A lightweight semi-trailer frame according to claim 3, characterized in that: The cooling component comprises a transmission pipe (27), the transmission pipe (27) is fixedly connected to the bottom of the water storage tank (24), the bottom of the transmission pipe (27) is fixedly connected to a square box (28), the square box (28) is fixedly connected to the bottom of the frame body (1), the bottom of the square box (28) is fixedly connected to a water spray pipe (29), the opening of the water spray pipe (29) faces the brake pad of the wheel (7), the side of the square box (28) away from the second door panel (4) is fixedly connected to an L-shaped plate (30), one side of the L-shaped plate (30) is slidably connected to a slide rod (31), and the slide rod (31) The outer wall of the square box (28) is fixedly connected with a circular plate (33), the circular plate (33) is arranged on one side of the square box (28), the side of the circular plate (33) away from the square box (28) is fixedly connected with a spring (32), the other end of the spring (32) is fixedly connected to one side of the L-shaped plate (30), the end of the sliding rod (31) away from the L-shaped plate (30) extends into the inner wall of the square box (28), the end of the sliding rod (31) extending into the inner wall of the square box (28) is fixedly connected with a stopper (34), the bottom of the stopper (34) is fixedly connected with a pad, and the stopper (34) and the pad are arranged at the top end of the water spray pipe (29).

5. A lightweight semi-trailer frame according to claim 4, characterized in that: The support assembly comprises a bottom block (35), the bottom block (35) being rotatably connected to a side of the second door panel (4) away from the vehicle frame body (1) via a rotating shaft, a support plate (36) being fixedly connected to one side of the bottom block (35), the top end of the support plate (36) being inclined, the top end of the support plate (36) being closely attached to the bottom of the second door panel (4), two groups of mounting grooves (37) being provided on both sides of the bottom block (35), the inner walls of the mounting grooves (37) being fixedly connected to magnets (38).

6. A lightweight semi-trailer frame according to claim 5, characterized in that: The positioning assembly comprises a first connecting rod (40), the first connecting rod (40) is rotatably connected to the bottom of the second door panel (4), the end of the first connecting rod (40) away from the second door panel (4) is rotatably connected to the second connecting rod (42), the end of the second connecting rod (42) away from the first connecting rod (40) is rotatably connected to a stabilizing block (43), the stabilizing block (43) is arranged on one side of the wheel (7), a sliding frame (44) is fixedly connected to the bottom of one side of the frame body (1), a sliding block (45) is fixedly connected to one side of the sliding block (43), the sliding block (45) is slidably connected to the inner wall of the sliding frame (44), the shape of the sliding block (45) is square, the side of the sliding block (45) away from the stabilizing block (43) is fixedly connected to a limiting plate, the limiting plate is arranged on one side of the sliding frame (44), and the sliding frame (44) is arranged in an inclined manner.

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