Three-in-one plastic frame forklift with weighing function

Abstract

The three-in-one plastic frame forklift with the weighing function comprises a forklift body, a lifting motor is arranged on the inner side of the forklift body, a display screen is installed at the rear end of the forklift body, a door frame is slidably connected to the front end of the forklift body, and a pallet fork is slidably connected to the front end of the door frame. The inner side of the pallet fork is provided with a gravity sensor, the upper end of the pallet fork is provided with a moving mechanism for driving the detection part, the clamping part and the protection part to move, and the outer side of the moving mechanism is provided with a detection mechanism for detecting fruits and vegetables in the plastic frame. A clamping mechanism for clamping and fixing a plastic frame is installed above the detection mechanism on the outer side of the moving mechanism, and a protection mechanism for protecting the top of the plastic frame is installed above the clamping mechanism on the outer side of the moving mechanism. And multi-scene turnover requirements are met.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment, specifically to a three-in-one plastic frame forklift with weighing function. Background Technology

[0002] Fruits and vegetables, as easily damaged and perishable agricultural products, are often transported using plastic crates, fruit baskets, and turnover crates. These types of crates are widely used in logistics warehousing and agricultural product distribution. However, during the handling of fruits and vegetables, there are many pain points in the following aspects: weight statistics of the crates and the fruits and vegetables inside, quantity verification, damage and rot detection, transportation fixation, and stacking protection. These issues directly affect the quality of fruits and vegetables and logistics efficiency.

[0003] Patent CN112062047A discloses a weighing forklift, including a chassis, a gravity sensor, a display, and a steering assembly. The gravity sensor is mounted on the fork of the chassis and is used to sense the weight on the forklift. The gravity sensor is communicatively connected to a controller. The display is mounted on the chassis frame and is communicatively connected to the controller to display the weight of the goods. The steering assembly is mounted on the chassis of the chassis and includes driven wheels and drive wheels. There are four driven wheels, each located at the top corner of the chassis, used for steering. The four driven wheels are connected to the steering wheel of the chassis. The drive wheels are symmetrically arranged on both sides of the chassis, and the direction of travel of the drive wheels is consistent with the axis of the chassis. The weighing forklift provided by this invention solves the problem that existing forklifts do not have a weighing function and are prone to tipping over when turning while loaded with goods.

[0004] However, the above technical solutions still have the following shortcomings in practical applications: The current equipment has a single weighing function, and its gravity sensor lacks adaptability, making it unsuitable for various sizes of plastic crates, fruit baskets, and turnover crates. Weight data is simply displayed without coordination with subsequent quantity counting and damage inspection, requiring manual workflow integration and resulting in low weighing efficiency. Furthermore, the lack of an automated detection mechanism means that the quantity counting and damage / rot inspection of fruits and vegetables within the crates are entirely manual, leading to high labor intensity, low efficiency, large errors, and missed detections, making it unsuitable for large-scale logistics turnover scenarios. The absence of damage and contamination prevention components means that when fruits and vegetables are damaged or rotten, residual juice or decaying matter can easily attract flies and insects, spreading contamination and increasing the risk of the entire crate being scrapped. The lack of a dedicated clamping structure for plastic crates, fruit baskets, and turnover crates makes it unsuitable for crates of different sizes and thicknesses, making them prone to displacement and slippage during transport. Finally, the lack of a stacking protection mechanism means that the top of the crate lacks effective protection during 1-3 layer stacking transport, making it susceptible to tipping over due to bumps and insufficient stability during multi-layer transport. Therefore, we propose a three-in-one plastic crate forklift with weighing functionality. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The present invention solves the above-mentioned technical problems by adopting the following technical solution: A three-in-one plastic frame forklift with weighing function is provided. A lifting motor and a rechargeable battery assembly are located on the inner side of the forklift body. A charging interface is located on the outer side of the forklift body. The battery assembly on the inner side of the forklift body is electrically connected to the lifting motor, a first motor, a second motor, and other electrical components. A display screen is installed at the rear end of the forklift body. A mast is slidably connected to the front end of the forklift body. An adjustment mechanism for adjusting the clamping according to the size of the plastic frame is installed at the front end of the mast. A moving mechanism for moving detection, clamping, and protection components is installed at the upper end of the adjustment mechanism. A detection mechanism for detecting fruits and vegetables inside the plastic frame is installed on the outer side of the moving mechanism. A clamping mechanism for clamping and fixing the plastic frame is installed above the outer clamping mechanism of the moving mechanism. A protection mechanism for protecting the top of the plastic frame is installed above the outer clamping mechanism of the moving mechanism.

[0007] Preferably, the adjustment mechanism includes two symmetrical forks fixedly connected to the mast. Gravity sensors are provided on the inner sides of both forks. A baffle is fixedly connected to the side of the two forks that are close to each other. A sliding groove is provided at the upper end of the baffle. Two symmetrical third electric telescopic rods are respectively installed on the inner sides of the two forks. The output shafts of the two third electric telescopic rods are fixedly connected to a clamping plate. The lower end of the clamping plate is slidably connected to the sliding groove at the upper end of the baffle through a slider.

[0008] Preferably, the moving mechanism includes two mounting plates slidably connected to the gantry. A first motor is mounted on the upper end of each of the two mounting plates. A threaded rod is fixedly connected to the output shaft of the first motor. The lower end of the threaded rod is fixedly connected to two forks respectively. A sliding rod is fixedly connected to the inner side of the mounting plate near the rear end. The lower end of the sliding rod is fixedly connected to two forks respectively.

[0009] Preferably, the detection mechanism includes four symmetrical L-shaped fixing blocks. The inner sides of two of the four L-shaped fixing blocks are threadedly connected to two threaded rods, and the inner sides of the other two L-shaped fixing blocks are slidably connected to two sliding rods. Two semi-rectangular gear rings are fixedly connected to the adjacent ends of the four L-shaped fixing blocks. A sliding groove is provided at the upper end of the semi-rectangular gear ring. A first gear is meshed with the inner side of the semi-rectangular gear ring. A sliding frame is rotatably connected to the outer side of the first gear. The outer side of the sliding frame is slidably connected to the sliding groove of the semi-rectangular gear ring.

[0010] Preferably, a first rotating shaft is rotatably connected to the inner side of the sliding frame, a first gear is fixedly connected to the outer side of the first rotating shaft near its lower end, a plurality of blades are fixedly connected to the outer side of the first rotating shaft near its upper end, a storage bin is rotatably connected to the outer side of the first rotating shaft, a second motor is installed at the upper end of the storage bin, the output shaft of the second motor is fixedly connected to the first rotating shaft, a solenoid valve spray head is provided on the outer side of the storage bin, the lower end of the storage bin is fixedly connected to the sliding frame, and a miniature camera is installed on the outer side of the sliding frame.

[0011] Preferably, the clamping mechanism includes two first connecting rods threadedly connected to the threaded rod. The inner sides of the two first connecting rods near the rear end are respectively slidably connected to two sliding rods. A fixing sleeve is fixedly connected to the outer side of the first connecting rod. A mounting shell is fixedly connected to the lower end of the fixing sleeve. The outer shell of the first electric telescopic rod is installed on the inner side of the mounting shell. A sliding block is fixedly connected to the output shaft of the first electric telescopic rod. The outer side of the sliding block is slidably connected to the mounting shell.

[0012] Preferably, two symmetrical second electric telescopic rods are installed on the inner side of the sliding block. The output shafts of the two second electric telescopic rods are fixedly connected to a circular block. The outer side of the circular block is rotatably connected to a first bracket via a rotating shaft. The outer side of the first bracket is rotatably connected to a second bracket via a rotating shaft.

[0013] Preferably, a first half-face gear connecting rod is fixedly connected to the lower end of the first bracket, and one of two clamping blocks is fixedly connected to the lower end of the first half-face gear connecting rod. A second half-face gear connecting rod is fixedly connected to the other clamping block of the two clamping blocks. The outer side of the second half-face gear connecting rod is meshed with the first half-face gear connecting rod, and the outer side of the second half-face gear connecting rod is rotatably connected to the second bracket through a rotating shaft.

[0014] Preferably, the protective mechanism includes two second connecting rods threadedly connected to the threaded rod. The inner sides of the two second connecting rods near the rear end are respectively slidably connected to two sliding rods. A first sliding groove is provided at the lower end of one of the two second connecting rods. A plurality of sliding plates are slidably connected to the inner side of the first sliding groove. An arc-shaped sliding groove is provided on the inner side of the sliding plate.

[0015] Preferably, a second rotating shaft is fixedly connected to the upper end of the sliding plate near one side, and a scissor bar is rotatably connected to the outer side of the second rotating shaft. The scissor bar includes two connecting rods that are cross-connected by the rotating shaft. A third rotating shaft is rotatably connected to the inner side of the scissor bar near the other end. The outer side of the third rotating shaft is slidably connected to the sliding groove on the inner side of the sliding plate, and the lower end of the third rotating shaft is fixedly connected to another second connecting rod of the two second connecting rods.

[0016] Compared with the prior art, the present invention provides a three-in-one plastic frame forklift with weighing function, which has the following beneficial effects: This three-in-one plastic crate forklift with weighing function can be adapted to different sizes of plastic crates, fruit baskets, and turnover baskets through gravity sensors inside the forks. After the crate is placed, it instantly collects the total weight of the crate and the fruits and vegetables inside, and the data is synchronized to the display screen for visualization, eliminating the need for external weighing equipment. The semi-rectangular toothed ring splicing structure, combined with gears and a sliding frame transmission, enables a miniature camera to scan in all directions, efficiently counting the number of fruits and vegetables and quickly identifying damage and rot, solving the problems of inefficient and missed detection by manual inspection. It also integrates solution stirring and spraying functions, and can detect abnormalities in fruits and vegetables. It can spray fly-repellent and anti-corrosion solution immediately to avoid the spread of pollution caused by fruit and vegetable juice residue or rotten matter, and reduce the risk of the whole frame being scrapped; the clamping mechanism realizes the synchronous engagement of the clamping blocks through a half-gear connecting rod, and flexibly adjusts the clamping position with the electric telescopic rod to adapt to different frame sizes and solve the problems of unstable fixing devices and poor compatibility; the protective mechanism uses a scissor rod to drive the sliding plate to unfold the complete protective surface, and the two mechanisms work together to achieve interlayer clamping and top protection, adapting to 1-3 layers of stacked plastic frames, fruit baskets, and turnover baskets, improving transportation stability and overcoming the problem of frame misalignment and tipping caused by bumps. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural side view of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a cross-sectional view of the adjustment mechanism of the present invention; Figure 5 This is a cross-sectional view of the detection mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged diagram of part A in the middle; Figure 7 This is a schematic diagram of the clamping mechanism of the present invention. Figure 8 This is an enlarged schematic diagram of a portion of the clamping mechanism of the present invention. Figure 1 ; Figure 9 This is an enlarged schematic diagram of a portion of the clamping mechanism of the present invention. Figure 2 ; Figure 10 This is a cross-sectional schematic diagram of the overall structure of the protective mechanism of the present invention.

[0018] In the diagram: 1. Forklift body; 2. Display screen; 3. Mast; 4. Adjustment mechanism; 41. Forks; 42. Baffle; 43. Third electric telescopic rod; 44. Clamping plate; 5. Moving mechanism; 51. Mounting plate; 52. First motor; 53. Threaded rod; 54. Sliding rod; 6. Detection mechanism; 61. L-shaped fixing block; 62. Semi-rectangular gear ring; 63. First gear; 64. Sliding frame; 65. First rotating shaft; 66. Storage bin; 67. Second motor; 68. Solenoid valve spray head; 69. Miniature phase 7. Clamping mechanism; 71. First connecting rod; 72. Fixing sleeve; 73. Mounting housing; 74. First electric telescopic rod; 75. Sliding block; 76. Second electric telescopic rod; 77. Round block; 78. First bracket; 79. Second bracket; 710. First half-face gear connecting rod; 711. Second half-face gear connecting rod; 712. Clamping block; 8. Protective mechanism; 81. Second connecting rod; 82. First slide groove; 83. Sliding plate; 84. Second rotating shaft; 85. Scissor bar; 86. Third rotating shaft. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-10 A three-in-one plastic frame forklift with weighing function includes a forklift body 1. A lifting motor and a rechargeable battery assembly are installed inside the forklift body 1. A charging interface is installed on the outside of the forklift body 1. The battery assembly inside the forklift body 1 is electrically connected to the lifting motor, a first motor 52, a second motor 67, and other electrical components. A display screen 2 is installed at the rear end of the forklift body 1. A mast 3 is slidably connected to the front end of the forklift body 1. An adjustment mechanism 4 is installed at the front end of the mast 3 to adjust the clamping according to the size of the plastic frame. A moving mechanism 5 is installed at the upper end of the adjustment mechanism 4 to move the detection, clamping, and protection components. A detection mechanism 6 is installed on the outside of the moving mechanism 5 to detect the fruits and vegetables inside the plastic frame. A clamping mechanism 7 is installed above the detection mechanism 6 on the outside of the moving mechanism 5 to clamp and fix the plastic frame. A protection mechanism 8 is installed above the clamping mechanism 7 on the outside of the moving mechanism 5 to protect the top of the plastic frame.

[0021] In this embodiment, the adjustment mechanism 4 includes two symmetrical forks 41 fixedly connected to the mast 3. Gravity sensors are provided on the inner side of each fork 41. A baffle 42 is fixedly connected to the side of each fork 41 that is close to each other. A sliding groove is provided at the upper end of the baffle 42. Two symmetrical third electric telescopic rods 43 are respectively installed on the inner side of each fork 41. The output shafts of the two third electric telescopic rods 43 are fixedly connected to a clamping plate 44. The lower end of the clamping plate 44 is slidably connected to the sliding groove at the upper end of the baffle 42 through a slider.

[0022] Specifically, the forks 41 are fixedly connected to the mast 3, providing a load-bearing foundation for the frame and the fruits and vegetables inside, and also serving as the mounting carrier for the adjustment mechanism 4. The gravity sensor inside the forks 41 is used to collect the total weight data of the frame and fruits and vegetables in real time, providing a core detection component for the weighing function. The baffle 42 is fixed to the side of the two forks 41 that are close to each other, on the one hand forming a bottom limit for the bottom of the frame to prevent the frame from sliding off the bottom of the forks 41, and on the other hand, the groove opened at its upper end provides a guide trajectory for the sliding of the clamping plate 44. The third electric telescopic rod 43 serves as the power source for the adjustment mechanism 4, and drives the clamping plate 44 to move through the extension and retraction of the output shaft, thereby adjusting the clamping distance. Driven by the third electric telescopic rod 43, the clamping plate 44 moves synchronously closer to or further away from the groove of the baffle 42, and fits against the side of the frame to achieve clamping and fixation, adapting to frames of different specifications. The slider is fixed to the lower end of the clamping plate 44 and slides in cooperation with the groove of the baffle 42 to ensure that the movement of the clamping plate 44 is smooth and stable, and avoids deviation.

[0023] In this embodiment, the moving mechanism 5 includes two mounting plates 51 that are slidably connected to the gantry 3. A first motor 52 is mounted on the upper end of each of the two mounting plates 51. A threaded rod 53 is fixedly connected to the output shaft of the first motor 52. The lower end of the threaded rod 53 is fixedly connected to two forks 41 respectively. A sliding rod 54 is fixedly connected to the inner side of the mounting plate 51 near the rear end. The lower end of the sliding rod 54 is fixedly connected to two forks 41 respectively.

[0024] Specifically, two mounting plates 51 provide a stable mounting base for the first motor 52 and the slide bar 54, and the sliding connection between the mounting plates 51 and the mast 3 allows the moving mechanism 5 to move synchronously with the forks 41; the first motor 52 serves as a power source, and its output shaft drives the threaded rod 53 to rotate at a constant speed, providing power for the lifting and lowering of the detection mechanism 6, the clamping mechanism 7, and the protective mechanism 8; the threaded rod 53 forms a threaded connection with each mechanism to transmit power, while the slide bar 54 slides with each mechanism to provide guidance and limit for its lifting and lowering, ensuring that each mechanism moves smoothly along a fixed trajectory, thus realizing the core function of the moving mechanism 5 in driving the detection, clamping, and protective components to move.

[0025] In this embodiment, the detection mechanism 6 includes four symmetrical L-shaped fixing blocks 61. The inner sides of two of the four L-shaped fixing blocks 61 are threadedly connected to two threaded rods 53, and the inner sides of the other two L-shaped fixing blocks 61 are slidably connected to two sliding rods 54. Two semi-rectangular gear rings 62 are fixedly connected to the adjacent ends of the four L-shaped fixing blocks 61. A sliding groove is provided at the upper end of the semi-rectangular gear ring 62. A first gear 63 is meshed with the inner side of the semi-rectangular gear ring 62. A sliding frame 64 is rotatably connected to the outer side of the first gear 63. The outer side of the sliding frame 64 is slidably connected to the sliding groove of the semi-rectangular gear ring 62.

[0026] Specifically, the connection base between the detection mechanism 6 and the moving mechanism 5 is constructed through four L-shaped fixing blocks 61. Two of the L-shaped fixing blocks 61 are threadedly engaged with the threaded rod 53 to receive lifting power, while the other two are slidably engaged with the slide rod 54 to ensure moving stability. Two semi-rectangular toothed rings 62 are driven by the L-shaped fixing blocks 61 and can be spliced ​​or separated according to the spacing of the forks 41. After splicing, they form a complete circular trajectory, and the upper groove provides sliding support for the sliding frame 64. The first gear 63 meshes with the semi-rectangular toothed rings 62. When the first gear 63 rotates, it can drive the sliding frame 64 to make circumferential motion along the groove of the semi-rectangular toothed ring 62 and the inner trajectory of the toothed ring by means of meshing, providing an all-round moving path for the detection component.

[0027] In this embodiment, a first rotating shaft 65 is rotatably connected to the inner side of the sliding frame 64. The outer side of the first rotating shaft 65 near the lower end is fixedly connected to a first gear 63. Multiple blades are fixedly connected to the outer side of the first rotating shaft 65 near the upper end. A storage tank 66 is rotatably connected to the outer side of the first rotating shaft 65. A second motor 67 is installed at the upper end of the storage tank 66. The output shaft of the second motor 67 is fixedly connected to the first rotating shaft 65. A solenoid valve spray head 68 is provided on the outer side of the storage tank 66. The lower end of the storage tank 66 is fixedly connected to the sliding frame 64. A miniature camera 69 is installed on the outer side of the sliding frame 64.

[0028] Specifically, the second motor 67 provides the core power for the detection mechanism 6, and its output shaft drives the first rotating shaft 65 to rotate at high speed. The lower end of the first rotating shaft 65 is fixed to the first gear 63, which drives the gear to rotate synchronously to drive the sliding frame 64 to move. The blades at the upper end rotate with the rotating shaft to stir the anti-fly and insect and anti-corrosion solution in the storage tank 66, so as to avoid the precipitation of solution components and affect the protective effect. The storage tank 66 is fixed on the sliding frame 64 to provide storage space for the solution. The solenoid valve spray head 68 on its outside is linked with the detection system. When abnormal conditions such as fruit and vegetable damage or rot are detected, the protective liquid can be sprayed quickly. The miniature camera 69 on the outside of the sliding frame 64 moves in a circle with the sliding frame 64 to realize all-round scanning of the fruits and vegetables in the plastic frame, fruit basket or turnover basket, and complete the counting of the number of fruits and vegetables and the identification of damage and rot.

[0029] In this embodiment, the clamping mechanism 7 includes two first connecting rods 71 ​​that are threadedly connected to the threaded rod 53. The inner sides of the two first connecting rods 71 ​​near the rear end are respectively slidably connected to two sliding rods 54. A fixing sleeve 72 is fixedly connected to the outer side of the first connecting rod 71. A mounting shell 73 is fixedly connected to the lower end of the fixing sleeve 72. The shell of the first electric telescopic rod 74 is installed on the inner side of the mounting shell 73. A sliding block 75 is fixedly connected to the output shaft of the first electric telescopic rod 74. The outer side of the sliding block 75 is slidably connected to the mounting shell 73.

[0030] Specifically, the clamping mechanism 7 and the moving mechanism 5 are connected by two first connecting rods 71. The threaded engagement with the threaded rod 53 and the sliding engagement with the slide rod 54 allow the clamping mechanism 7 to rise and fall synchronously with the moving mechanism 5. The fixed sleeve 72 serves as a transition connection, firmly fixing the mounting shell 73 to the first connecting rods 71. The mounting shell 73 provides installation and protection space for the first electric telescopic rod 74. The output shaft of the first electric telescopic rod 74 pushes the sliding block 75 to slide along the inner track of the mounting shell 73, realizing the horizontal position adjustment of the clamping assembly, so that the clamping block 712 can be accurately aligned with the clamping position of the plastic frame.

[0031] In this embodiment, two symmetrical second electric telescopic rods 76 are installed on the inner side of the sliding block 75. The output shafts of the two second electric telescopic rods 76 are fixedly connected to a circular block 77. The outer side of the circular block 77 is rotatably connected to a first bracket 78 through a rotating shaft. The outer side of the first bracket 78 is rotatably connected to a second bracket 79 through a rotating shaft.

[0032] Specifically, the sliding block 75 provides a mounting carrier for the second electric telescopic rod 76. The two symmetrical second electric telescopic rods 76 serve as the power source for the clamping action. The linear extension and retraction of their output shafts drives the circular block 77 to move synchronously. The circular block 77 is rotatably connected to the first bracket 78 through a rotating shaft, converting the linear power into the angular deflection force of the first bracket 78. One end of the second bracket 79 is rotatably connected to the first bracket 78, and the other end provides fixed support, forming a stable transmission structure to ensure that the power can be accurately transmitted to the subsequent clamping components, realizing the opening and closing action of the clamping block 712.

[0033] In this embodiment, a first half-face gear connecting rod 710 is fixedly connected to the lower end of the first bracket 78. One of two clamping blocks 712 is fixedly connected to the lower end of the first half-face gear connecting rod 710. The other clamping block 712 is fixedly connected to a second half-face gear connecting rod 711. The outer side of the second half-face gear connecting rod 711 meshes with the first half-face gear connecting rod 710. The outer side of the second half-face gear connecting rod 711 is rotatably connected to the second bracket 79 through a rotating shaft.

[0034] Specifically, the first bracket 78 drives the first half-face gear connecting rod 710 to deflect synchronously. The meshing structure of the first half-face gear connecting rod 710 and the second half-face gear connecting rod 711 converts the deflection force in one direction into the synchronous movement of the two gear connecting rods in opposite directions. The second half-face gear connecting rod 711 is rotatably connected to the second bracket 79 through a rotating shaft to ensure its deflection trajectory is stable. The two clamping blocks 712 are fixed to the first half-face gear connecting rod 710 and the second half-face gear connecting rod 711 respectively. They engage or disengage with the opposite movement of the first half-face gear connecting rod 710 and the second half-face gear connecting rod 711, thereby forming a stable clamp on the edge of the plastic frame and preventing the frame from being misaligned during transportation.

[0035] In this embodiment, the protective mechanism 8 includes two second connecting rods 81 that are threadedly connected to the threaded rod 53. The inner sides of the two second connecting rods 81 are slidably connected to two sliding rods 54 near the rear end. A first sliding groove 82 is provided at the lower end of one of the two second connecting rods 81. A plurality of sliding plates 83 are slidably connected to the inner side of the first sliding groove 82. An arc-shaped sliding groove is provided on the inner side of the sliding plate 83.

[0036] Specifically, the protective mechanism 8 and the moving mechanism 5 are connected by two second connecting rods 81. Their cooperation with the threaded rod 53 and the sliding rod 54 allows the protective mechanism 8 to rise and fall synchronously with the moving mechanism 5. The first groove 82 at the lower end of one of the second connecting rods 81 provides a sliding track for multiple sliding plates 83, allowing the sliding plates 83 to expand or retract along the groove to accommodate the movement of the forks 41. The arc-shaped groove on the inner side of the sliding plate 83 provides movement space for the third rotating shaft 86, ensuring smooth extension and retraction of the scissor bar 85 and laying the foundation for forming a complete protective surface.

[0037] In this embodiment, a second rotating shaft 84 is fixedly connected to the upper end of the sliding plate 83 near one side. A scissor bar 85 is rotatably connected to the outer side of the second rotating shaft 84. The scissor bar 85 includes two connecting rods that are cross-connected by rotating shafts. A third rotating shaft 86 is rotatably connected to the inner side of the scissor bar 85 near the other end. The outer side of the third rotating shaft 86 is slidably connected to the sliding groove on the inner side of the sliding plate 83. The lower end of the third rotating shaft 86 is fixedly connected to the other second connecting rod 81 of the two second connecting rods 81.

[0038] Specifically, the relative movement of the two second connecting rods 81 drives the third rotating shaft 86 to move synchronously. The third rotating shaft 86 slides along the arc-shaped groove on the inner side of the sliding plate 83, providing power for the extension and retraction of the scissor bar 85. The second rotating shaft 84 is fixed on the sliding plate 83, serving as the rotation fulcrum of the scissor bar 85, ensuring that the cross linkage of the scissor bar 85 can open and close stably. The extension and retraction of the scissor bar 85 drives multiple sliding plates 83 to expand or retract synchronously along the first groove 82. After expansion, a complete top protective surface is formed, which fits against the upper surface of the plastic frame to prevent the frame from tipping over due to transportation bumps.

[0039] During operation, the forklift body 1 is started first. Based on the dimensions of the plastic crate, fruit basket, or turnover crate to be transported, the forks 41 are adjusted and clamped to the crate body via the adjustment mechanism 4. The two forks 41 in the adjustment mechanism 4 are fixedly connected to the mast 3. After receiving a control signal, the pre-installed third electric telescopic rod 43 on its inner side pushes the clamping plate 44 to slide smoothly along the groove at the upper end of the baffle 42. The clamping distance is precisely adjusted by the two symmetrical clamping plates 44 moving closer or further apart until they perfectly match the width of the crate. Simultaneously, gravity sensors are installed on the inner side of each fork 41, and the baffle 42 can adjust the shape of the bottom of the crate. The front limit is set to ensure that the frame is centered when placed on the fork 41, which not only provides a precise benchmark for subsequent weighing, but also initially fixes the frame from the bottom to avoid lateral displacement. After the spacing is adjusted, the height of the fork 41 is adjusted by the lifting motor inside the fork body 1, and it is smoothly inserted into the bottom of the frame to complete the initial support and positioning. When the frame and the fruits and vegetables inside are completely placed on the upper end of the fork 41, the gravity sensor preset inside the fork 41 immediately starts the weighing program, collects the total weight of the frame and fruits and vegetables in real time, and transmits the weight data synchronously to the display screen 2 at the rear of the fork body 1 to realize weight visualization. During the movement of the frame driven by the fork 41, it will simultaneously drive the threaded rod 53 and the sliding rod 54 to move together, thereby driving the mounting plate 51 to slide smoothly along the assembly rod trajectory inside the mast 3, so that the moving mechanism 5 and the fork 41 maintain synchronous displacement, providing a stable reference for subsequent detection, clamping and protection actions. After the frame is positioned, the two first motors 52 are started simultaneously, and their output shafts will drive the threaded rods 53 to rotate at a constant speed. Since the threaded rods 53 are threadedly connected to the L-shaped fixing block 61 of the detection mechanism 6, the first connecting rod 71 of the clamping mechanism 7, and the second connecting rod 81 of the protective mechanism 8, and the slide rod 54 provides guidance and limit for each mechanism, the detection mechanism 6, the clamping mechanism 7, and the protective mechanism 8 will descend synchronously and smoothly along the trajectory of the slide rod 54 and carry out corresponding operations in sequence. As the forks 41 move, the threaded rod 53 and the sliding rod 54 drive the two semi-rectangular gear rings 62 to move and splice into a complete rectangular gear ring via the L-shaped fixing block 61. Then, the L-shaped fixing block 61 drives the detection mechanism 6 to move down to the opening of the frame, and at the same time, the second motor 67 is started. The output shaft of the second motor 67 drives the first rotating shaft 65 to rotate. This rotation has a dual function: on the one hand, it drives the blades on the outside of the first rotating shaft 65 to rotate, stirring the anti-fly and insect and anti-corrosion solution in the storage bucket 66, effectively preventing the solution from settling; on the other hand, it drives the first gear 63 to rotate synchronously. Since the first gear 63 meshes with the semi-rectangular gear ring 62, and the sliding frame 64 is connected to the upper end of the semi-rectangular gear ring 62, the first gear 63 meshes with the semi-rectangular gear ring 62. The sliding connection drives the sliding frame 64 to move in a circle along the trajectory of the semi-rectangular toothed ring 62. During the movement of the sliding frame 64, the miniature camera 69 installed on its outer side will scan and photograph the fruits and vegetables in the frame from all directions, which can accurately count the number of fruits and vegetables and quickly identify whether there is damage or rot. If damaged or rotten fruits and vegetables are detected, the system will immediately trigger the solenoid valve spray head 68 to evenly spray the anti-fly and insect and anti-corrosion solution in the storage tank 66 onto the outside of the frame and the opening, forming a protective barrier to prevent the spread of pollution caused by residual rotten juice and reduce the risk of the whole frame of fruits and vegetables being scrapped. With the displacement adjustment of the moving mechanism 5, the detection mechanism 6 can complete the detection of multiple stacked frames in sequence. After the inspection is completed, the clamping mechanism 7 moves precisely to the junction of the two sets of frames through the displacement of the first connecting rod 71; the second electric telescopic rod 76 is activated, and its output shaft pushes the circular block 77 to move linearly. The circular block 77 drives the first bracket 78 to deflect at an angle through the rotating shaft. The first bracket 78 then drives the first half-face gear connecting rod 710 to move synchronously. Since the first half-face gear connecting rod 710 meshes with the second half-face gear connecting rod 711, and the second half-face gear connecting rod 711 forms a limited rotation with the second bracket 79 through the rotating shaft, it will drive the second half-face gear connecting rod 711 to deflect synchronously in the opposite direction. Finally, the two sets of clamping blocks 712 are engaged to achieve a stable clamping of the edges of the two frames and prevent the frames from shifting or slipping during transportation. If the clamping position needs to be adjusted, the sliding block 75 can be pushed along the mounting shell 73 by the first electric telescopic rod 74 to achieve flexible adjustment of the clamping point. After the clamping action is completed, the protective mechanism 8 moves down through the second connecting rod 81 until its lower end is in contact with the upper surface of the top frame. During this process, when the two second connecting rods 81 move relative to each other, they will drive the third rotating shaft 86 to slide along the arc-shaped groove on the inner side of the sliding plate 83. Under the fixed limiting action of the second rotating shaft 84, the scissor bar 85 will extend synchronously, driving multiple sliding plates 83 to unfold along the first groove 82 to form a complete top protective surface, effectively preventing the frame from tipping over due to bumps during transportation. Once the frame is transported to its destination, the control system will reverse the first motor 52, driving the threaded rod 53 to reverse, causing the detection mechanism 6, clamping mechanism 7, and protective mechanism 8 to move synchronously upwards along the slide rod 54 until they are completely separated from the frame. At this point, the loading and unloading of the frame and the fruits and vegetables inside can be safely completed.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-in-one plastic frame forklift with weighing function, comprising a forklift body (1), characterized in that: A lifting motor is provided on the inner side of the forklift body (1), a rechargeable battery assembly is provided on the inner side of the forklift body (1), and a charging interface is provided on the outer side of the forklift body (1). The battery assembly on the inner side of the forklift body (1) is electrically connected to the lifting motor, the first motor (52), the second motor (67), and other electrical components. A display screen (2) is installed at the rear end of the forklift body (1), and a mast (3) is slidably connected to the front end of the forklift body (1). A large plastic frame is installed at the front end of the mast (3). The adjustment mechanism (4) is appropriately adjusted for clamping. The upper end of the adjustment mechanism (4) is equipped with a moving mechanism (5) that drives the movement of the detection, clamping, and protective components. The outer side of the moving mechanism (5) is equipped with a detection mechanism (6) for detecting the fruits and vegetables in the plastic frame. Above the outer detection mechanism (6) of the moving mechanism (5), a clamping mechanism (7) for clamping and fixing the plastic frame is installed. Above the outer clamping mechanism (7) of the moving mechanism (5), a protective mechanism (8) for protecting the top of the plastic frame is installed.

2. The three-in-one plastic frame forklift with weighing function according to claim 1, characterized in that: The adjustment mechanism (4) includes two symmetrical forks (41) fixedly connected to the mast (3). Gravity sensors are provided on the inner side of each fork (41). A baffle (42) is fixedly connected to the side of each fork (41) that is close to each other. A sliding groove is provided at the upper end of the baffle (42). Two symmetrical third electric telescopic rods (43) are installed on the inner side of each fork (41). The output shafts of the two third electric telescopic rods (43) are fixedly connected to a clamp (44). The lower end of the clamp (44) is slidably connected to the sliding groove at the upper end of the baffle (42) through a slider.

3. A three-in-one plastic frame forklift with weighing function according to claim 1, characterized in that: The moving mechanism (5) includes two mounting plates (51) slidably connected to the gantry (3). A first motor (52) is mounted on the upper end of each of the two mounting plates (51). A threaded rod (53) is fixedly connected to the output shaft of the first motor (52). The lower end of the threaded rod (53) is fixedly connected to two forks (41) respectively. A sliding rod (54) is fixedly connected to the inner side of the mounting plate (51) near the rear end. The lower end of the sliding rod (54) is fixedly connected to two forks (41) respectively.

4. A three-in-one plastic frame forklift with weighing function according to claim 1, characterized in that: The detection mechanism (6) includes four symmetrical L-shaped fixing blocks (61). The inner sides of two of the four L-shaped fixing blocks (61) are threadedly connected to two threaded rods (53), and the inner sides of the other two L-shaped fixing blocks (61) are slidably connected to two sliding rods (54). Two semi-rectangular gear rings (62) are fixedly connected to the close ends of the four L-shaped fixing blocks (61). The upper end of the semi-rectangular gear ring (62) is provided with a sliding groove. The inner side of the semi-rectangular gear ring (62) is meshed with a first gear (63). The outer side of the first gear (63) is rotatably connected to a sliding frame (64). The outer side of the sliding frame (64) is slidably connected to the sliding groove of the semi-rectangular gear ring (62).

5. A three-in-one plastic frame forklift with weighing function according to claim 4, characterized in that: The inner side of the sliding frame (64) is rotatably connected to a first rotating shaft (65). The outer side of the first rotating shaft (65) near the lower end is fixedly connected to a first gear (63). The outer side of the first rotating shaft (65) near the upper end is fixedly connected to multiple blades. The outer side of the first rotating shaft (65) is rotatably connected to a storage tank (66). The upper end of the storage tank (66) is equipped with a second motor (67). The output shaft of the second motor (67) is fixedly connected to the first rotating shaft (65). The outer side of the storage tank (66) is provided with a solenoid valve spray head (68). The lower end of the storage tank (66) is fixedly connected to the sliding frame (64). The outer side of the sliding frame (64) is equipped with a miniature camera (69).

6. A three-in-one plastic frame forklift with weighing function according to claim 1, characterized in that: The clamping mechanism (7) includes two first connecting rods (71) threadedly connected to the threaded rod (53). The inner sides of the two first connecting rods (71) near the rear end are respectively slidably connected to two sliding rods (54). A fixing sleeve (72) is fixedly connected to the outer side of the first connecting rod (71). A mounting shell (73) is fixedly connected to the lower end of the fixing sleeve (72). The shell of the first electric telescopic rod (74) is installed on the inner side of the mounting shell (73). A sliding block (75) is fixedly connected to the output shaft of the first electric telescopic rod (74). The outer side of the sliding block (75) is slidably connected to the mounting shell (73).

7. A three-in-one plastic frame forklift with weighing function according to claim 6, characterized in that: Two symmetrical second electric telescopic rods (76) are installed on the inner side of the sliding block (75). The output shafts of the two second electric telescopic rods (76) are fixedly connected to a round block (77). The outer side of the round block (77) is rotatably connected to a first bracket (78) through a rotating shaft. The outer side of the first bracket (78) is rotatably connected to a second bracket (79) through a rotating shaft.

8. A three-in-one plastic frame forklift with weighing function according to claim 7, characterized in that: The lower end of the first bracket (78) is fixedly connected to a first half-face gear connecting rod (710). The lower end of the first half-face gear connecting rod (710) is fixedly connected to one of two clamping blocks (712). The other clamping block (712) of the two clamping blocks (712) is fixedly connected to a second half-face gear connecting rod (711). The outer side of the second half-face gear connecting rod (711) is meshed with the first half-face gear connecting rod (710). The outer side of the second half-face gear connecting rod (711) is rotatably connected to the second bracket (79) through a rotating shaft.

9. A three-in-one plastic frame forklift with weighing function according to claim 1, characterized in that: The protective mechanism (8) includes two second connecting rods (81) that are threaded to the threaded rod (53). The inner sides of the two second connecting rods (81) near the rear end are slidably connected to two slide rods (54). A first slide groove (82) is provided at the lower end of one of the two second connecting rods (81). A plurality of slide plates (83) are slidably connected to the inner side of the first slide groove (82). An arc-shaped slide groove is provided on the inner side of the slide plate (83).

10. A three-in-one plastic frame forklift with weighing function according to claim 9, characterized in that: A second rotating shaft (84) is fixedly connected to the upper end of the sliding plate (83) near one side. A scissor bar (85) is rotatably connected to the outer side of the second rotating shaft (84). The scissor bar (85) includes two connecting rods that are cross-connected by the rotating shaft. A third rotating shaft (86) is rotatably connected to the inner side of the scissor bar (85) near the other end. The outer side of the third rotating shaft (86) is slidably connected to the sliding groove on the inner side of the sliding plate (83). The lower end of the third rotating shaft (86) is fixedly connected to the other second connecting rod (81) of the two second connecting rods (81).

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