Rollover dumper carriage of lightweight semitrailer

Abstract

The invention relates to the technical field of side-turning semitrailers, in particular to a side-turning dumper carriage of a lightweight semitrailer, which comprises a chassis, a carriage and a mounting plate, a jacking mechanism used for lifting the height of the front face of the carriage is arranged between the carriage and the mounting plate, the jacking mechanism comprises a side turning plate, a placing plate, a lifting assembly, an adjusting assembly and a positioning and clamping assembly, the lifting assembly and the positioning and clamping assembly are rotationally arranged between the mounting plate and the side turning plate, and the bottom of the back face of the side turning plate is rotationally arranged on the mounting plate; the positioning and clamping assembly comprises a connecting part and a supporting rod. Through the arrangement of the supporting rod, the supporting rod is intermittently clamped and fixed in the connecting part, the supporting rod can slide out of the connecting part to extend during lifting, the other end of the supporting rod is clamped and fixed in the connecting part at the moment, and the side turning plate can be supported through the connecting part and the supporting rod; all pressure is prevented from being applied to the lifting assembly in the lifting process, the failure phenomenon is avoided, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of side-tipping semi-trailer technology, and more particularly to a side-tipping dump truck body for a lightweight semi-trailer. Background Technology

[0002] Side-tipping semi-trailers are widely used in the transportation of loose materials such as sand, gravel, coal, and mineral powder due to their high unloading efficiency and strong adaptability to different sites. With the increasing demands for compliance and economic efficiency in the logistics and transportation industry, lightweighting has become a core trend in semi-trailer development. By reducing the weight of the trailer, the effective load capacity can be increased within the compliant load range, while simultaneously reducing fuel consumption and carbon emissions, significantly improving user operating profits. These lightweighting achievements are problems that have been solved in existing technologies. However, current technologies still have shortcomings in the methods for achieving side-tipping.

[0003] Currently, the existing technology for tipping semi-trailers is achieved by lifting with hydraulic telescopic rods. During the lifting process, the trailer tilts in one direction to facilitate rapid unloading of goods. However, when the trailer is fully loaded, the weight of the entire trailer is very heavy. Relying solely on the lifting support of the hydraulic telescopic rods will result in a large load on the rods, which will severely reduce their service life without auxiliary support.

[0004] For example, the semi-trailer side-unloading device disclosed in Chinese Patent No. CN117549813A, while capable of tipping over in two directions, is prone to swaying from side to side during transportation, exhibiting poor stability. Furthermore, the tipping operation relies on hydraulic rods for lifting and support, placing all the supporting force on the hydraulic rods. Prolonged use reduces the lifespan of the hydraulic rods, impacting the overall lifespan of the lightweight semi-trailer. Therefore, there is an urgent need for a lightweight semi-trailer side-unloading cargo box that can provide positioning support during the tipping and lifting process and allow the cargo box to slide downwards, ensuring the goods inside slide down. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides the following technical solution: A lightweight semi-trailer with a side-tipping dump truck body includes a chassis, a truck body, and mounting plates. Multiple sets of mounting plates are equidistantly fixed to the top surface of the chassis. Fixed plates are fixedly connected to both sides of the chassis, and the truck body is positioned between adjacent fixed plates. Storage support plates, which engage with both sides of the truck body, are slidably mounted on both sides of the inner wall of each mounting plate. A lifting mechanism for raising the front height of the truck body is provided between the truck body and the mounting plates. The lifting mechanism includes a side-tipping plate, a placement plate for mounting the truck body, a lifting assembly for lifting the side-tipping plate to an inclined state, an adjusting assembly for driving the placement plate to slide on the side-tipping plate, and a positioning and securing assembly for limiting the position of the side-tipping plate during lifting. The lifting assembly and the positioning and securing assembly are rotatably mounted between the mounting plate and the side-tipping plate. The bottom back of the side-tipping plate is rotatably mounted on the mounting plate. The positioning and securing assembly includes a connecting component rotatably mounted on the mounting plate and a support rod with one end rotatably mounted on the side-tipping plate. The other end of the support rod intermittently slides and secures itself inside the connecting component as the side-tipping plate is lifted.

[0006] As an improvement to the above technical solution, the mounting plate is provided with a storage groove for the storage support plate to slide. The inner wall of the storage groove is provided with a first limiting groove on both sides. The first limiting groove has a convex cross-section. The storage support plate is fixedly connected to a first limiting slider that is slidably disposed in the first limiting groove on both sides of one side. The storage support plate is provided with a pull groove on the other side.

[0007] As an improvement to the above technical solution, a first support block, a second support block, and a third support block are fixedly installed on the top surface of the mounting plate near the front, middle, and back, respectively. The top surfaces of the first support block, the second support block, and the third support block are all arc-shaped structures. A fourth support block is provided between the third support blocks. The fourth support block is fixedly connected to the side flap plate. A rotating cylinder is rotatably provided between the fourth support block and the third support block.

[0008] As an improvement to the above technical solution, the lifting assembly includes a hydraulic rod, which is rotatably disposed between the second support block and the side flap, and the hydraulic rod is disposed on both sides of the side flap.

[0009] As an improvement to the above technical solution, the connecting component includes a connecting plate, one end of which is rotatably connected to the mounting plate. The inner wall of the connecting plate is provided with a fourth limiting groove for the support rod to slide. A fifth limiting groove is provided on the connecting plates on both sides of the fourth limiting groove. A support locking mechanism is elastically provided on the support rod near the other end. A limiting insertion hole is evenly provided on the connecting plate on one side of the fifth limiting groove for one end of the support locking mechanism to be inserted.

[0010] As an improvement to the above technical solution, the support and locking mechanism includes a limiting rod, a connecting rod, a limiting block, and a second spring. The supporting rod has a mounting hole for the limiting rod to slide. A connecting block is fixedly connected to the inner wall of the mounting hole. One end of the connecting rod passes through the connecting block and is fixedly connected to the limiting block. The connecting rod is slidably connected to the connecting block, and the other end is fixedly connected to the limiting rod. One side of the limiting rod has an arc-shaped structure, and the second spring is fixedly disposed between the limiting rod and the connecting block.

[0011] As an improvement to the above technical solution, a limiting mechanism for limiting the position of the limiting block is provided on the other side of the support rod. The limiting mechanism includes a connecting slider, a first spring, and a U-shaped plate. A third limiting groove is provided on the support rod for the connecting slider to slide. The first spring is fixedly disposed between the inner wall of the third limiting groove and the connecting slider. The connecting slider is fixedly connected to the U-shaped plate, and one end of the U-shaped plate has an arc-shaped structure.

[0012] As an improvement to the above technical solution, a second limiting plate with an arc-shaped structure is fixedly provided on the inner wall of the fifth limiting groove near one end of the support rod, and a first limiting plate that blocks the U-shaped plate is fixedly provided on the inner wall of the fifth limiting groove.

[0013] As an improvement to the above technical solution, the adjustment component includes a power component and an adjustment component. The adjustment component includes a threaded rod, a worm gear, and a second limiting slider. The side flaps are provided with second limiting grooves on both sides for the second limiting slider to slide. The outer periphery of the threaded rod is threadedly connected to the second limiting slider. One end of the threaded rod is rotatably connected to the second limiting groove, and the other end is fixedly connected to the worm gear. The worm gear is rotatably disposed in the second limiting groove.

[0014] As an improvement to the above technical solution, the power component includes a drive rod, a worm gear, and a drive motor. The drive rod passes through the fourth support block and is rotatably connected between the fixed plates. The drive motor is fixedly mounted on the fixed plate, and the power output end of the drive motor is fixedly connected to the drive rod. The worm gear is located around the drive rod and meshes with the worm.

[0015] The beneficial effects of this invention are: 1. Through the setting of the support rod, the support rod slides inside the connecting component, and one end of the support rod is rotatably connected to the side tilting plate, while the other end is intermittently locked inside the connecting component. When the side tilting plate is raised, the support rod slides out and extends from inside the connecting component, and at this time, the other end of the support rod is locked inside the connecting component. The side tilting plate can be supported by the connecting component and the support rod, ensuring the stability of the side tilting plate, avoiding all the pressure being applied to the lifting component during the lifting process, preventing the lifting component from malfunctioning after long-term use, and extending its service life. It can achieve positioning of the carriage during the lifting process. When it needs to be raised to a specified height, it can be effectively supported by the support rod and the connecting component, ensuring the effective self-unloading of goods in the carriage and preventing the carriage from retracting during unloading.

[0016] 2. By setting up storage support plates, they can be secured to both sides of the carriage to limit its movement and improve its stability. They can also be partially pulled out to serve as cargo placement areas, increasing the vehicle's storage space. Attached Figure Description

[0017] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram of region A in the middle; Figure 3 This is a rear-view stereoscopic structural diagram of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region B in the middle; Figure 5 This is a diagram showing the positional relationship between the vehicle chassis and the mounting plate of the present invention; Figure 6 This is an enlarged structural diagram of the mounting plate of the present invention; Figure 7 This is an enlarged schematic diagram of the storage support plate structure of the present invention; Figure 8 This is a top-down enlarged view of the connection structure between the side flap and the placement plate of the present invention; Figure 9 This is an enlarged view of the worm gear and worm connection structure of the present invention; Figure 10 This is an enlarged view of the connection structure between the drive rod and the worm gear of the present invention; Figure 11 This is an enlarged cross-sectional view of the connecting plate of the present invention. Figure 12 For the present invention Figure 11 Enlarged structural diagram of region C in the middle; Figure 13 This is an enlarged schematic diagram of the support rod structure of the present invention; Figure 14 This is an enlarged schematic diagram of the U-shaped frame structure of the present invention; Figure 15 This is an enlarged view showing the positional relationship between the connecting block and the limiting rod of the present invention.

[0018] Reference numerals: 1. Underframe; 11. Fixing plate; 2. Carriage box; 3. Mounting plate; 31. Storage slot; 32. First limiting slide groove; 33. Storage support plate; 331. Pull groove; 332. First limiting slider; 34. First support block; 35. Second support block; 36. Third support block; 4. Side flip plate; 41. Placement plate; 411. Baffle; 42. Second limiting slide groove; 43. Fourth support block; 44. Hydraulic rod; 5. Drive rod; 51. Worm gear; 52. Rotary drum; 53. Drive motor 6. Connecting plate; 61. Support rod; 611. Mounting hole; 612. Third limiting slide groove; 613. Connecting slider; 614. First spring; 615. U-shaped plate; 616. Connecting block; 62. Fourth limiting slide groove; 63. Fifth limiting slide groove; 631. First limiting plate; 632. Second limiting plate; 633. Limiting insertion hole; 7. Threaded rod; 71. Worm gear; 72. Second limiting slider; 8. Limiting rod; 81. Connecting rod; 811. Limiting stop; 82. Second spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] Please refer to Figures 1-15 As shown, the present invention provides a lightweight semi-trailer side-tipping dump truck body, including a chassis 1, a truck body 2 and mounting plates 3. Multiple sets of mounting plates 3 are provided and are fixedly installed at equal intervals on the top surface of the chassis 1. Fixing plates 11 are fixedly connected to both sides of the chassis 1, and the truck body 2 is arranged between adjacent fixing plates 11. Both sides of the inner wall of the mounting plate 3 are slidably provided with storage support plates 33 that are snapped onto the two sides of the carriage 2; A lifting mechanism for raising the front height of the car body 2 is provided between the car body 2 and the mounting plate 3. The lifting mechanism includes a side flip plate 4, a placement plate 41 for mounting the car body 2, a lifting component for lifting the side flip plate 4 to an inclined state, an adjustment component for driving the placement plate 41 to slide on the side flip plate 4, and a positioning and locking component for limiting the position of the side flip plate 4 during lifting. The lifting component and the positioning and locking component are rotatably arranged between the mounting plate 3 and the side flip plate 4, and the bottom back of the side flip plate 4 is rotatably arranged on the mounting plate 3. The positioning and locking assembly includes a connecting component rotatably mounted on the mounting plate 3 and a support rod 61 rotatably mounted on the side flap 4 at one end. The other end of the support rod 61 is intermittently slidably locked inside the connecting component as the side flap 4 is raised.

[0021] In this case, the carriage 2 is positioned between the fixed plates 11 and mounted on the placement plate 41. It tilts as the placement plate 41 is raised, facilitating the automatic downward sliding of goods within the carriage 2. The fixed plates 11 primarily limit the carriage 2 to prevent displacement and slippage. Furthermore, the multiple sets of mounting plates 3 correspond to multiple placement plates 41, allowing for the installation of multiple carriages 2 on the placement plate 41. The purpose of installing multiple carriages 2 is to classify and store goods, enabling the transport of small quantities of various types of goods in a single shipment, thus facilitating... The classification and storage of goods, especially when transporting sand, gravel, coal, and mineral powder, allows for the transport of multiple types of goods in a single trip when small quantities are required. This avoids the need for multiple round trips for transporting different types of goods in a single trip, reducing transportation costs. At the same time, a large carriage 2 can be installed to transport large quantities of goods in a single trip. When the transport of multiple types of goods requires tipping, the carriage 2 is tilted, and the door of one carriage 2 is opened at one point to dump the goods. Then, the vehicle is moved forward to dump the goods from another carriage 2. This allows the goods from multiple carriages 2 to be dumped into different locations.

[0022] Supplement: The overall structure of the carriage 2 is existing technology. Therefore, the structure of the carriage 2 is not specifically drawn in this invention. To achieve the side-tipping of the carriage 2, the structure of the semi-trailer is required. The carriage 2 is raised to an inclined state to achieve the self-unloading of the objects inside the carriage 2. The door of the carriage 2 adopts an up-and-down flip-type structure. The top of the door is set to rotate and the bottom is fixed by a snap-fit ​​structure, which can realize the automatic opening of the door and the manual opening of the door. These are all mature technical means in the prior art. Therefore, the opening method of the carriage 2 door will not be described in detail.

[0023] The purpose of setting the adjustment component is to change the position of the placement plate 41. When the side tilt plate 4 is tilted, the adjustment component can be used to make the placement plate 41 slide on the side tilt plate 4, so that the placement plate 41 is closer to the ground. This setting can make the goods fall to a position further away from the semi-trailer, avoiding a large accumulation of goods at the bottom of the lightweight semi-trailer, so as to prevent the large area of ​​goods from being crushed and causing the vehicle to overturn, and also to prevent affecting the movement of the vehicle.

[0024] The support rod 61 slides inside the connecting component, with one end rotatably connected to the side flap 4 and the other end intermittently locked inside the connecting component. When the side flap 4 is raised, the support rod 61 slides out and extends from inside the connecting component, while the other end of the support rod 61 is locked inside the connecting component. The connecting component and the support rod 61 can support the side flap 4, ensuring its stability and preventing all the pressure from being applied to the lifting component during the lifting process. This avoids the lifting component from malfunctioning after prolonged use, extends its service life, and enables the positioning of the carriage 2 during the lifting process. When it needs to be raised to a specified height, the support rod 61 and the connecting component can provide effective auxiliary support.

[0025] Among them, by setting up the storage support plate 33, the storage support plate 33 is slidably set in the mounting plate 3 and can be stored in the mounting plate 3. During transportation, the storage support plate 33 can be pulled out, rotated and locked to both sides of the carriage 2 to limit the two sides of the carriage 2.

[0026] Expanding the function of the storage support plate 33: Partially pull out the storage support plate 33 so that it protrudes, then secure it with screws, making the storage support plate 33 and the mounting plate 3 a single unit. This extends the overall width of the semi-trailer, allowing cargo to be placed on the storage support plate 33 and increasing the vehicle's cargo space. like Figure 2 , Figure 6 and Figure 7 As shown, the mounting plate 3 has a storage groove 31 for the storage support plate 33 to slide. The inner walls of the storage groove 31 are provided with first limiting grooves 32 on both sides. The first limiting grooves 32 have a convex cross-section. The storage support plate 33 has a first limiting slider 332 fixedly connected to both sides of one side and slidably disposed in the first limiting grooves 32. The storage support plate 33 has a pull groove 331 on the other side.

[0027] By setting up the storage support plate 33, and fixing the first limiting slider 332 on both sides of one side of the storage support plate 33, as... Figure 6 and Figure 7 As shown, the structure of the first limiting slider 332 can be seen. When the storage support plate 33 is pulled out of the storage groove 31 through the pull groove 331, the first limiting slider 332 is still in the first limiting slide groove 32. At this time, by rotating the storage support plate 33, the storage support plate 33 can be rotated to both sides of the carriage 2 to position the carriage 2. There are locking blocks at the corresponding pull grooves 331 on both sides of the carriage 2. When the storage support plate 33 is rotated to both sides of the carriage 2, it can be locked. The locking blocks are not shown in the attached figure. After the storage support plate 33 is locked, the stability of the carriage 2 can be ensured and the carriage 2 is limited.

[0028] In this design, by partially removing the storage support plate 33, the storage slot 31 prevents the storage support plate 33 from rotating. Then, screws are used to fix the storage support plate 33 and the mounting plate 3 together. Figure 6 As shown, some parts of the mounting plate 3 are protruding structures. The protruding structures facilitate the use of screws to fix the storage support plate 33. At this time, the storage support plate 33 is in a horizontal state, which can accommodate some goods and increase the vehicle's carrying space. The goods placed on the storage support plate 33 can be tied and fixed by passing the binding rope through the pull groove 331. Therefore, the storage support plate 33 can be fixed to both sides of the carriage 2 to limit the carriage 2, and can also be pulled out to serve as a placement position, increasing the vehicle's carrying space.

[0029] like Figure 2 , Figure 4 , Figure 8 and Figure 10 As shown, a first support block 34, a second support block 35, and a third support block 36 are fixedly installed on the top surface of the mounting plate 3 near the front, middle, and back, respectively. The top surfaces of the first support block 34, the second support block 35, and the third support block 36 are all arc-shaped structures. A fourth support block 43 is provided between the third support blocks 36. The fourth support block 43 is fixedly connected to the side flap 4. A rotating cylinder 52 is rotatably provided between the fourth support block 43 and the third support block 36.

[0030] With the arrangement of the first support block 34, the second support block 35 and the third support block 36, when the side flap 4 is not lifted and is in a horizontal state, the ground of the side flap 4 is pressed against the first support block 34, the second support block 35 and the third support block 36 to support the side flap 4, ensure the stability of the side flap 4 and prevent it from shaking.

[0031] By setting up the rotating drum 52, the side flap 4 rotates around the axis of the rotating drum 52 during the lifting process, thereby achieving the tilting state of the side flap 4.

[0032] like Figure 8 As shown, the lifting assembly includes a hydraulic rod 44, which is rotatably disposed between the second support block 35 and the side flap 4, and the hydraulic rod 44 is disposed on both sides of the side flap 4.

[0033] The hydraulic rod 44 is used to lift the side flap 4, so that the side flap 4 is tilted, which facilitates the sliding unloading of goods in the carriage 2.

[0034] The connecting component includes a connecting plate 6, one end of which is rotatably connected to the mounting plate 3. The inner wall of the connecting plate 6 is provided with a fourth limiting groove 62 for the support rod 61 to slide. The connecting plates 6 on both sides of the fourth limiting groove 62 are provided with a fifth limiting groove 63. A support locking mechanism is elastically provided on the support rod 61 near the other end. The connecting plate 6 on one side of the fifth limiting groove 63 is provided with limiting insertion holes 633 for one end of the support locking mechanism to be inserted.

[0035] The support and locking mechanism includes a limiting rod 8, a connecting rod 81, a limiting block 811, and a second spring 82. The supporting rod 61 has a mounting hole 611 for the limiting rod 8 to slide. A connecting block 616 is fixedly connected to the inner wall of the mounting hole 611. One end of the connecting rod 81 passes through the connecting block 616 and is fixedly connected to the limiting block 811. The connecting rod 81 is slidably connected to the connecting block 616. The other end is fixedly connected to the limiting rod 8. One side of the limiting rod 8 has an arc-shaped structure. The second spring 82 is fixedly set between the limiting rod 8 and the connecting block 616.

[0036] On the other side of the support rod 61, there is a limiting mechanism for limiting the position of the limiting block 811. The limiting mechanism includes a connecting slider 613, a first spring 614, and a U-shaped plate 615. The support rod 61 has a third limiting groove 612 for the connecting slider 613 to slide. The first spring 614 is fixedly disposed between the inner wall of the third limiting groove 612 and the connecting slider 613. The connecting slider 613 is fixedly connected to the U-shaped plate 615. One end of the U-shaped plate 615 has an arc-shaped structure.

[0037] A second limiting plate 632 with an arc-shaped structure is fixedly installed on the inner wall of the fifth limiting groove 63 near one end of the support rod 61, and a first limiting plate 631 with a blocking U-shaped plate 615 is fixedly installed on the inner wall of the fifth limiting groove 63.

[0038] With the setting of the limiting rod 8 and the U-shaped plate 615, during the lifting process, the support rod 61 will slide on the inner wall of the fourth limiting groove 62 as the lifting height changes, causing the other end of the support rod 61 to change position. During the sliding process, the limiting rod 8 is inserted into the limiting insertion hole 633 to support the support rod 61. At this time, the support rod 61 supports the side flap 4, assists in supporting the side flap 4, and prevents the weight of the carriage 2 from being fully pressed onto the hydraulic rod 44. As the height of the side flap 4 is raised, the limiting rod 8 can be intermittently inserted into the limiting insertion holes 633 that are evenly arranged in the connecting plate 6. Each time it is inserted into the limiting insertion hole 633, it can support the support rod 61 and limit the support rod 61.

[0039] One side of the limiting rod 8 has an arc-shaped structure, such as... Figure 15As shown, one side of the limiting rod 8 has a quarter-spherical arc structure, which facilitates sliding out of the limiting insertion hole 633 and into the next set of limiting insertion holes 633 during the lifting process. Figure 15 It can also be seen that the other side of the limiting rod 8 is a half-cylinder shape. Therefore, after the limiting rod 8 is inserted into the limiting insertion hole 633, it will not move backward. It can effectively support and position the support rod 61, ensuring stability during the lifting process. When the maximum height is reached and the carriage 2 needs to be retracted, it continues to be lifted a short distance upward, causing the limiting rod 8 to move along the arc surface of the second limiting plate 632. At this time, the limiting rod 8 can be pressed. The limiting rod 8 presses the connecting rod 81 and the limiting block 811, causing the limiting block 811 to protrude from the mounting hole 611. At this time, the limiting block 811 squeezes the U-shaped plate 615, causing the U-shaped plate 615 to shift. After the stop block 811 passes through the U-shaped plate 615, it returns to its initial state under the action of the first spring 614, so that the U-shaped plate 615 blocks the stop block 811 and prevents the stop block 811 from moving. Then the carriage 2 can be retracted. When the side flip plate 4 moves to the horizontal state, it can be supported by the second support block 35 and the third support block 36. At this time, the U-shaped plate 615 will press against the first limit plate 631, causing the U-shaped plate 615 to shift and release the limit on the stop block 811. Under the action of the second spring 82, the stop block 811 can be pulled back into the mounting hole 611, and at this time the limit rod 8 is inserted into the limit insertion hole 633.

[0040] The structure of U-shaped plate 615 is as follows: Figure 14 As shown, the arc shape at its end can be seen, which facilitates the passage of the limit block 811 and effectively limits the limit block 811, preventing the limit rod 8 from being inserted into the limit socket 633 during the retraction of the carriage 2.

[0041] The adjustment assembly includes a power component and an adjustment component. The adjustment component includes a threaded rod 7, a worm gear 71, and a second limiting slider 72. Both sides of the side flap 4 are provided with second limiting grooves 42 for the second limiting slider 72 to slide. The outer periphery of the threaded rod 7 is threadedly connected to the second limiting slider 72. One end of the threaded rod 7 is rotatably connected to the second limiting groove 42, and the other end is fixedly connected to the worm gear 71. The worm gear 71 is rotatably disposed in the second limiting groove 42.

[0042] The power components include a drive rod 5, a worm gear 51, and a drive motor 53. The drive rod 5 passes through the fourth support block 43 and is rotatably connected between the fixed plates 11. The drive motor 53 is fixedly mounted on the fixed plate 11, and the power output end of the drive motor 53 is fixedly connected to the drive rod 5. The worm gear 51 is located around the drive rod 5 and is meshed with the worm 71.

[0043] The drive motor 53 drives the drive rod 5 to rotate, the drive rod 5 drives the worm wheel 51 to rotate, the worm wheel 51 drives the worm 71 to rotate, the worm 71 drives the threaded rod 7 to rotate, and the threaded rod 7 drives the second limit slider 72 to move, so that the placement plate 41 slides on the side flip plate 4.

[0044] The hydraulic rod 44 and the drive motor 53 are driven synchronously, thus ensuring the sliding of the placement plate 41 during the rollover process.

[0045] Since the worm wheel 51 is rotating during the lifting process, and the axis of rotation of the worm wheel 51 is the axis of rotation during the lifting process, although the worm 71 will be tilted during the lifting process, the meshing state between the worm wheel 51 and the worm 71 will always be maintained while the worm wheel 51 is rotating.

[0046] Supplement: In the prior art, the position of the worm wheel 51 can be changed to de-engage the worm wheel 51 with the worm 71. At this time, multiple carriages 2 can be lifted and slid downwards. This application does not include a structure for changing the position of the worm wheel 51. In the prior art, the position of the worm wheel 51 can be changed by control, for example, by manually sliding the position of the worm wheel 51 and then fixing it with a pin, so that the worm wheel 51 is displaced. This can achieve the sliding of a single placement plate 41 or the simultaneous sliding of multiple sets of placement plates 41. It can be achieved simply by changing the position of the worm wheel 51. It will not be elaborated further here, and can be designed according to the actual situation.

[0047] Supplement: In the appendix Figure 8 The fourth support block 43 is drawn as a long strip structure. In actual use, it can be set as a block structure. With a block structure, the worm gear 51 can be fixed to the drive rod 5 by a pin screw. This form allows the worm gear 51 to slide on the outside of the drive rod 5. By sliding, it can be offset from the worm 71. At this time, multiple carriages 2 can be tilted separately, and when tilting, all carriages 2 will not move outward as a whole, which can ensure the support of each carriage 2. The drive motor 53 has the same speed and number of rotations per unit time. Therefore, by using the sliding method of the worm gear 51, after the tilting of one carriage 2 is completed, the sliding worm gear 51 can ensure the meshing state of the worm gear 51 and the worm 71. Therefore, in practice, the method of the worm gear 51 can be set according to the actual situation.

[0048] In practice, the worm gear 51 and worm 71 are mostly self-locking structures. However, this design does not use a self-locking structure and can drive the worm 71 to rotate through the worm gear 51.

[0049] This solution does not specifically describe the fixing structure after the carriage 2 is placed on the placement plate 41. The clamping structure that fixes it to the placement plate 41 is existing technology, so it will not be described in detail. Meanwhile, in the figure... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 It can be seen that baffles 411 are provided on both sides of the placement plate 41. The baffles 411 are rotatably connected to the placement plate 41. Rotating the baffles 411 and engaging them with the two sides of the carriage 2 can increase the stability of the carriage 2.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A lightweight semi-trailer rollover dump car, comprising a car chassis (1), a car body (2) and a mounting plate (3), the mounting plate (3) is provided with multiple groups and is fixedly arranged on the top surface of the car chassis (1), and the car chassis (1) is fixedly connected with a fixed plate (11) on both sides; the car body (2) is arranged between the adjacent fixed plates (11); characterized in that: the inner wall of the mounting plate (3) is slidably provided with a receiving support plate (33) clamped on both sides of the car body (2); a jacking mechanism for lifting the front height of the car body (2) is arranged between the car body (2) and the mounting plate (3), the jacking mechanism comprises a rollover plate (4), a placing plate (41) for mounting the car body (2), a lifting assembly for lifting the rollover plate (4) to an inclined state, an adjusting assembly for driving the placing plate (41) to slide on the rollover plate (4), and a positioning and clamping assembly for lifting the position of the rollover plate (4); the lifting assembly and the positioning and clamping assembly are rotatably arranged between the mounting plate (3) and the rollover plate (4); and the back bottom of the rollover plate (4) is rotatably arranged on the mounting plate (3); the positioning and clamping assembly comprises a connecting component rotatably arranged on the mounting plate (3) and a support rod (61) having one end rotatably arranged on the rollover plate (4); the other end of the support rod (61) is intermittently clamped in the connecting component as the rollover plate (4) is lifted.

2. A roll-over dump body for a lightweight semi-trailer according to claim 1, characterized in that: a receiving groove (31) is formed in the mounting plate (3) for sliding of the receiving support plate (33); first limiting sliding grooves (32) are formed in the inner walls of the receiving groove (31); the cross section of the first limiting sliding grooves (32) is in a convex structure; first limiting sliding blocks (332) are fixedly connected on both sides of one face of the receiving support plate (33) and slidably arranged in the first limiting sliding grooves (32); and a pull groove (331) is formed in the other face of the receiving support plate (33).

3. A roll-over dump body for a lightweight semi-trailer according to claim 1, characterized in that: first, second and third support blocks (34, 35, 36) are fixedly arranged on the top surface of the mounting plate (3) near the front, middle and back, respectively; the top surfaces of the first, second and third support blocks (34, 35, 36) are in an arc structure; a fourth support block (43) is arranged between the third support blocks (36); the fourth support block (43) is fixedly connected with the rollover plate (4); and a rotating cylinder (52) is rotatably arranged between the fourth support block (43) and the third support block (36).

4. A roll-over dump body for a lightweight semi-trailer according to claim 1, characterized in that: the lifting assembly comprises a hydraulic rod (44); the hydraulic rod (44) is rotatably arranged between the second support block (35) and the rollover plate (4); and the hydraulic rod (44) is arranged on both sides of the rollover plate (4).

5. A roll-over dump body for a lightweight semi-trailer according to claim 3, characterized in that: The connecting component comprises a connecting plate (6), one end of the connecting plate (6) is rotationally connected with the mounting plate (3), a fourth limiting sliding groove (62) for sliding of a supporting rod (61) is formed in the inner wall of the connecting plate (6), fifth limiting sliding grooves (63) are formed in the connecting plates (6) on the two sides of the fourth limiting sliding groove (62), a supporting clamping mechanism is elastically arranged on the supporting rod (61) near the other end side, and limiting insertion holes (633) for one end of the supporting clamping mechanism to be inserted are uniformly formed in the connecting plate (6) on the one side of the fifth limiting sliding groove (63).

6. A roll-over dump body for a lightweight semi-trailer according to claim 5, characterized in that: The supporting clamping mechanism comprises a limiting rod (8), a connecting rod (81), a limiting block (811) and a second spring (82), the supporting rod (61) is provided with a mounting hole (611) for sliding of the limiting rod (8), the connecting block (616) is fixedly connected to the inner wall of the mounting hole (611), one end of the connecting rod (81) penetrates through the connecting block (616) and is fixedly connected with the limiting block (811), the connecting rod (81) is slidingly connected with the connecting block (616), the other end of the connecting rod (81) is fixedly connected with the limiting rod (8), the one side of the limiting rod (8) is in an arc structure, and the second spring (82) is fixedly arranged between the limiting rod (8) and the connecting block (616).

7. A roll-over dump body for a lightweight semi-trailer according to claim 6, characterized in that: The other side of the supporting rod (61) is provided with a limiting mechanism for limiting the position of the limiting block (811), the limiting mechanism comprises a connecting sliding block (613), a first spring (614) and a U-shaped plate (615), the supporting rod (61) is provided with a third limiting sliding groove (612) for sliding of the connecting sliding block (613), the first spring (614) is fixedly arranged between the inner wall of the third limiting sliding groove (612) and the connecting sliding block (613), the connecting sliding block (613) is fixedly connected with the U-shaped plate (615), and the one side end of the U-shaped plate (615) is in an arc structure.

8. A roll-over dump body for a lightweight semi-trailer according to claim 7, characterized in that: An arc-shaped second limiting plate (632) is fixedly arranged at the end of the supporting rod (61) on the inner wall of the fifth limiting sliding groove (63), and a first limiting plate (631) for blocking the U-shaped plate (615) is fixedly arranged on the inner wall of the fifth limiting sliding groove (63).

9. A roll-over dump body for a lightweight semi-trailer according to claim 3, characterized in that: The adjusting assembly comprises a power component and an adjusting component, the adjusting component comprises a threaded rod (7), a worm (71) and a second limiting sliding block (72), the two sides of the side turning plate (4) are provided with second limiting sliding grooves (42) for sliding of the second limiting sliding block (72), the threaded rod (7) is threadedly connected with the second limiting sliding block (72) on the periphery, one end of the threaded rod (7) is rotationally connected in the second limiting sliding groove (42), the other end of the threaded rod (7) is fixedly connected with the worm (71), and the worm (71) is rotationally arranged in the second limiting sliding groove (42).

10. A roll-over dump body for a lightweight semi-trailer according to claim 9, characterized in that: The power component comprises a driving rod (5), a worm wheel (51) and a driving motor (53), the driving rod (5) is rotatably connected between the fixed plates (11) through the fourth supporting block (43), the driving motor (53) is fixedly arranged on the fixed plates (11), the driving motor (53) is fixedly connected with the driving rod (5), and the worm wheel (51) is arranged on the periphery of the driving rod (5).

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