Agricultural product pre-cooling transport vehicle

Abstract

The invention belongs to the field of agricultural product transportation equipment, and discloses an agricultural product pre-cooling transport vehicle which comprises a vehicle body, a transport box fixedly arranged on the surface of the vehicle body, an air inlet and an air dustproof filter box arranged on the upper portion of the front end of the transport box, and two high-speed fans arranged on the lower portion of the rear end of the transport box. A circulating device is fixedly arranged at one end of the inner wall of the transport box, a cooling device is fixedly arranged below the circulating device, a filter box is fixedly arranged on one side of the circulating device, a transmission device is arranged on one side of the lower portion of the transport box, a plurality of movable baffles are placed on the inner wall of the transport box, and a plurality of transport devices connected with the transmission device in a matched mode are arranged in the transport box. Multiple functions of anti-collision protection, agricultural product pre-cooling and fresh-keeping, automatic dust removal and impurity removal, energy conservation and consumption reduction and flexible space adaptation are achieved, transportation loss is reduced, the quality of agricultural products is guaranteed, and the turnover transportation efficiency of the agricultural products is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural product transportation equipment technology, specifically to an agricultural product pre-cooling transport vehicle. Background Technology

[0002] The transportation of agricultural products from harvesting to sale is crucial to ensuring their freshness and commercial value. Agricultural products, especially vegetables, fruits, and melons, have high temperatures after harvesting, known as "field heat." If this field heat is not quickly removed, it increases the respiration rate of the produce, accelerates the reproduction of microorganisms carried in the field, and speeds up spoilage, making preservation difficult. Currently, many agricultural production bases lack pre-cooling warehouses or equipment, making timely pre-cooling impossible, yet they urgently need to transport the produce to urban agricultural distribution centers for market sale. Furthermore, the current market lacks sufficient cold chain transportation equipment for agricultural products. Ordinary refrigerated trucks, due to their low temperatures, are unsuitable for pre-cooling agricultural products, while regular transport vehicles and container trucks also lack cooling capabilities and cannot be used for transporting fresh produce. Therefore, there is an urgent need to develop a multi-functional pre-cooling transport vehicle for agricultural products, as designed here, that integrates pre-cooling and transportation functions.

[0003] Existing agricultural product transport vehicles generally suffer from the following technical defects and application pain points: Fruits and vegetables suffer severe damage from collisions: Round and oval fruits and vegetables are prone to rolling, stacking, and being squeezed during transportation due to vehicle bumps. Traditional transportation often uses cardboard boxes and foam boxes for packaging, but the fruits and vegetables inside lack effective securing, and friction and collision between them can cause damage to the skin, which not only affects the appearance and quality but also accelerates the growth of microorganisms and shortens the shelf life. Dust removal is manual and inefficient: Dust, lint, and other impurities adhering to the surface of fruits and vegetables need to be wiped clean manually before transportation or after arrival, which is time-consuming and labor-intensive. If cleaning is not timely, impurities will clog the pores of the fruit and vegetable skin, affecting respiration, and may also carry bacteria, increasing the risk of spoilage. Existing transportation equipment does not integrate dust removal functions, making it impossible to perform cleaning simultaneously during transportation, thus reducing supply chain efficiency. Poor spatial adaptability: The internal partition structure of traditional transport boxes is fixed, and the space cannot be flexibly adjusted according to the type of fruits and vegetables and the loading volume, which can easily lead to wasted space or overcrowding and reduce the amount of transported per trip. The aforementioned problems severely restrict the quality and efficiency of agricultural product transportation. Therefore, an integrated transportation equipment that can prevent collisions, remove dust, save energy, and adapt to space is proposed. Summary of the Invention

[0004] The present invention aims to provide a pre-cooling transport vehicle for agricultural products, which realizes multiple functions such as anti-collision protection, pre-cooling and preservation of agricultural products, automatic dust and impurity removal, energy saving and consumption reduction, and flexible space adaptation, thereby reducing transportation losses, ensuring the quality of agricultural products and improving the turnover efficiency of agricultural products.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The technical solution provided by this invention is: A pre-cooled transport vehicle for agricultural products includes a vehicle body, a transport box fixedly mounted on the surface of the vehicle body, a circulation device fixedly mounted on one end of the inner wall of the transport box, a cooling device fixedly mounted below the circulation device, a filter box fixedly mounted on one side of the circulation device, a transmission device mounted on one side of the lower part of the transport box, several movable baffles placed on the inner wall of the transport box, several transport devices adapted and connected to the transmission device inside the transport box, an air inlet fixedly mounted above the front end of the transport box, the air inlet communicating with the circulation device and the filter box, and two high-speed fans mounted at the lower rear end of the transport box.

[0006] Furthermore, the circulation device includes several circulation shafts fixedly installed on one end of the inner wall of the transport box. One end of the circulation shaft is provided with a rotatable circulation fan, and a synchronously rotating circulation gear is fixedly provided on one side of the circulation fan. A circulation belt is adapted to the surface of the circulation gear.

[0007] Furthermore, the cooling device includes a cooling water tank fixedly installed below one end of the inner wall of the transport box, a water pump fixedly installed inside the cooling water tank, a cooling water pipe fixedly installed at the water outlet of the water pump, the cooling water pipe circulating around the circulation shaft, and the water inlet of the water pump extending into the cooling water tank.

[0008] Furthermore, several water collection pipes are fixedly installed below the filter box, and the water collection pipes extend into the inner wall of the cooling water tank.

[0009] Furthermore, the transmission device includes a transmission rod rotatably mounted below the transport box, a transmission gear fixedly mounted at one end of the transmission rod, a transmission belt adapted to the surface of the transmission gear, and a drive gear adapted to the other end of the transmission belt, the drive gear being fixedly mounted on the surface of the circulating shaft. The transmission rod has several transmission bevel gears evenly distributed on its surface, and a driven bevel gear meshes with the surface of the transmission bevel gear. A transmission square rod is fixed above the shaft of the driven bevel gear.

[0010] Furthermore, the transport device includes a ventilated box with vent holes on both sides. A detachable cover is fitted on the top of the ventilated box, and connecting plates are fixed at both ends of the cover. Rotatable adsorption rollers are provided inside the connecting plates. Placement plates are fixed on both sides below the ventilated box, and rotatable active rollers and driven rollers are provided inside the placement plates. A power box is fixedly installed at one end of the ventilation box. A rotatable power rod is movably installed inside the power box. A square groove is opened at the lower part of the inner wall of the power rod. A square clamp rod that matches the square groove is fixedly installed above the power rod. A first power bevel gear is fixedly installed on the surface of the power rod. A second power bevel gear is meshed on one side of the first power bevel gear. The second power bevel gear is fixedly connected to one end of the drive roller. A driven box is fixedly provided at the other end of the vent box. A rotatable first gear is provided inside the driven box. The first gear is fixedly connected to one end of the driving roller. Below the ventilation box is a detachable T-shaped dust box. The surface of the T-shaped dust box has a moving groove. Inside the T-shaped dust box is a rotatable reciprocating screw. One end of the reciprocating screw is fixed with a second gear, which meshes with the first gear. The surface of the reciprocating screw is threaded with a sliding plate. Above the sliding plate is a scraper that moves above the moving groove. Dust outlets are opened at both ends of the T-shaped dust box.

[0011] Furthermore, the transport device is replaced with a ventilation device, which includes a ventilation box. Inside the ventilation box, a wind box and a ventilation filter box are separated by a ventilation plate. Several rotatable second ventilation gears are provided inside the wind box. A ventilation fan is fixed on one side of the second ventilation gear. A ventilation cover is provided on the top of the ventilation box. A ventilation energy box is fixedly installed at one end of the ventilation box. A ventilation rod is fixedly installed inside the ventilation energy box. A first ventilation bevel gear is fixedly installed on the surface of the ventilation rod. A second ventilation bevel gear is meshed with one side of the first ventilation bevel gear. A synchronously rotating first ventilation gear is fixedly installed on one side of the second ventilation bevel gear. A ventilation belt is adapted to be installed on the surface of the first ventilation gear. The ventilation belt is adapted to be connected to the second ventilation gear. A removable wet wash plate is placed inside the ventilation filter box.

[0012] The beneficial effects of this technical solution are: (1) The core commonality of this invention lies in the fact that through modular structural design and power system coordination, energy-saving and efficient environmental control of agricultural product transportation is achieved. In terms of power transmission, both rely on the airflow drive characteristics of the circulation device. Through the circulation gear and circulation belt on the circulation shaft, multiple circulation fans are driven to rotate synchronously, forming a stable airflow. At the same time, the power is transmitted to the transmission rod and bevel gear set of the transmission device through the drive gear and transmission belt. Finally, the power is provided to the end working device (transport device or ventilation device) through the transmission square rod. No additional drive motor is required throughout the process, which simplifies the equipment structure and reduces energy consumption. In terms of the basic cooling function, the cooling device cools down the temperature. The water pipes spiral around the circulation shaft, ensuring full contact with the airflow generated by the circulation fan, allowing the cool air to quickly diffuse throughout the transport box. Combined with movable baffles, the space can be flexibly divided according to loading needs, preventing uneven distribution of cool air in different areas. The baffles also help secure the end-effectors, preventing equipment displacement during transport. Furthermore, the filter box is connected to the cooling water tank via a water collection pipe, allowing for the recycling and reuse of condensate, further enhancing the equipment's energy-saving and environmentally friendly attributes. The overall structural consistency and compatibility allow for flexible switching between the two implementations based on the type of agricultural product, without requiring modifications to the vehicle body, core power system, or cooling components, thus reducing equipment adaptation costs.

[0013] (2) The transport device, through the coordinated operation of multiple sets of mechanical structures, specifically addresses the issues of collision damage and impurity removal during the transport of round and elliptical fruits and vegetables. Its core advantages are reflected in the design of the fruit and vegetable support and dynamic protection structure: the active roller and driven roller under the vent box form a rolling support surface, and the rubber sleeve on the surface of the roller can buffer the impact generated by vehicle bumps. Combined with the limiting effect of the upper cover plate, it can drive the fruits and vegetables to rotate smoothly during transport, avoiding the squeezing and wear caused by traditional stacking; the adsorption rollers installed at both ends of the cover plate through the connecting plate can roll synchronously with the rotation of the fruits and vegetables. The adsorption cotton on its surface can closely adhere to the surface of the fruits and vegetables, efficiently removing dust, lint and other impurities, realizing the synchronization of transport and dust removal. In terms of impurity collection and equipment maintenance, the T-shaped structure under the vent box... The dust bin features a detachable snap-fit ​​design. The internal reciprocating screw and scraper work together to scrape the debris that falls during cleaning to the dust collection port for centralized collection, eliminating the need for real-time manual cleaning. For power connection, the power rod quickly engages with the transmission rod via a square slot, facilitating batch loading and unloading of the ventilation bin. Combined with the space division function of the baffle plate, the loading density can be flexibly adjusted according to the size of fruits and vegetables, balancing transportation efficiency and protection. It is especially suitable for transporting fruits and vegetables with fragile skins that require surface cleanliness.

[0014] (3) The environmental adaptability of the transport box has been further optimized, especially suitable for agricultural products with specific humidity requirements (such as leafy greens and mushrooms). Its structural advantages are mainly reflected in the airflow control and environmental optimization capabilities: the ventilation box is separated from the filter box by a ventilation plate. Multiple second ventilation gears in the ventilation box are linked with the first ventilation gear through the ventilation belt. They can drive the ventilation fan to rotate synchronously under the drive of the ventilation rod, forming a strong and uniform airflow. The airflow is then gathered by the ventilation box and introduced into the filter box. The drawer-type washing plate in the filter box is made of porous sponge material, which can filter out small impurities in the airflow and also absorb clean water or keep fresh. The solution regulates the humidity of the airflow. The treated airflow is discharged from the side wall ventilation holes and mixes with the cold air generated by the cooling device to form a circulating environment with coordinated temperature and humidity control. This avoids the dehydration and shriveling of agricultural products caused by single cooling. In addition, the power connection of the ventilation device continues the overall design logic. The square groove at the lower end of the ventilation rod can be quickly connected to the transmission rod to ensure the stability and convenience of power transmission. The detachable design of the washing and wetting plate allows for the replacement of different solutions or cleaning and maintenance according to the needs of agricultural products. The operation is simple and efficient. Through airflow enhancement and dual temperature and humidity control, it provides a more targeted transportation environment guarantee for different types of agricultural products. Attached Figure Description

[0015] Figure 1 This is one of the overall structural schematic diagrams of a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 2 This is the second schematic diagram of the overall structure of a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 3 This is a schematic cross-sectional view of a pre-cooling transport vehicle for agricultural products proposed in this invention. Figure 4 This is a schematic diagram of the cross-sectional structure of the transport box of a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the transportation device structure of a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 7 This is one of the schematic cross-sectional views of the transport device of a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 8 This is the second schematic diagram of the cross-sectional structure of the transportation device of the agricultural product pre-cooling transportation vehicle proposed in this invention; Figure 9 This is a partial cross-sectional structural diagram of the transportation device of a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 10 This is a schematic diagram of the overall structure of the ventilation device for a pre-cooling transport vehicle for agricultural products proposed in this invention; Figure 11 This is a cross-sectional schematic diagram of the ventilation device of a pre-cooling transport vehicle for agricultural products proposed in this invention.

[0016] The corresponding labels in the attached diagram are named as follows: 1. Vehicle body; 2. Transport box; 3. Circulation device; 301. Circulation shaft; 302. Circulation gear; 303. Circulation fan; 304. Circulation belt; 4. Cooling device; 401. Cooling water tank; 402. Cooling water pipe; 5. Filter box; 6. Transmission device; 601. Drive gear; 602. Transmission belt; 603. Transmission rod; 604. Transmission gear; 605. Transmission bevel gear; 606. Driven bevel gear; 607. Transmission square rod; 7. Barrier plate; 8. Transport device; 801. Ventilation box; 802. Cover plate; 803. Connecting plate; 804. Adsorption roller; 805. Placement plate; 806. Drive roller; 807. Driven roller; 808. Power unit. 809. Power rod; 810. First power bevel gear; 811. Second power bevel gear; 812. Square clamping rod; 813. First gear; 814. Second gear; 815. T-shaped dust box; 816. Reciprocating screw; 817. Slide plate; 818. Scraper; 819. Moving trough; 820. Dust outlet; 821. Driven box; 9. Ventilation device; 901. Ventilation box; 902. Power box; 903. Ventilation rod; 904. First ventilation bevel gear; 905. Second ventilation bevel gear; 906. First ventilation gear; 907. Ventilation belt; 908. Second ventilation gear; 909. Ventilation fan; 910. Air box; 911. Filter box; 912. Ventilation cover; 10. Fan. Detailed Implementation

[0017] 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.

[0018] The specific implementation process is as follows: Example 1: Please see Figure 1-9The present invention provides a technical solution: a pre-cooled agricultural product transport vehicle, comprising a vehicle body 1, a transport box 2 fixedly installed on the surface of the vehicle body 1, an XPE insulation board attached to the inner wall of the transport box 2, the XPE insulation board being used to insulate the transport box 2 during transportation, preventing excessive temperature fluctuations inside the transport box 2 from affecting shelf life, a circulation device 3 welded and fixed to one end of the inner wall of the transport box 2, a cooling device 4 bolted below the circulation device 3, a filter box 5 bolted to one side of the circulation device 3, a transmission device 6 rotatably mounted on one side of the lower part of the transport box 2 via a bearing seat, and several... The movable baffle plate 7 can be adjusted in position as needed. Several transport devices 8 adapted to and connected to the transmission device 6 are placed inside the transport box 2. An air inlet is fixedly provided at the upper front end of the transport box 2. The air inlet is connected to the circulation device 3 and the filter box 5. The air entering is filtered through the filter box 5. Two high-speed fans 10 are provided at the lower rear end of the transport box 2. The fans 10 are used to operate during transportation to exhaust the heat inside the transport box 2. The operation of the fans 10 can accelerate the exhaust of air inside the transport box 2, thereby increasing the airflow rate by drawing air from the transport box 2 and achieving strong convection.

[0019] The circulation device 3 includes several circulation shafts 301 that are fixedly installed on one end of the inner wall of the transport box 2 by bolts. A circulation fan 303 is rotatably installed on one end of the circulation shaft 301 via a bearing. A synchronously rotating circulation gear 302 is welded and fixed on one side of the circulation fan 303. A circulation belt 304 is fitted on the surface of the circulation gear 302. Through the transmission of the circulation belt 304, all circulation gears 302 rotate synchronously, thereby driving all circulation fans 303 to rotate synchronously.

[0020] The cooling device 4 includes a cooling water tank 401 that is bolted to the lower part of one end of the inner wall of the transport box 2. A water pump is bolted to the cooling water tank 401, and a cooling water pipe 402 is welded to the water outlet of the water pump. The cooling water pipe 402 is spirally wrapped around the outside of the circulation shaft 301. The water inlet of the water pump extends into the cooling water tank 401. When the water pump is working, it delivers the cooling water in the cooling water tank 401 to the cooling water pipe 402 to cool the air around the circulation shaft 301.

[0021] Several water collection pipes (not shown in the figure) are welded and fixed at the bottom of the filter box 5. The water collection pipes extend into the inner wall of the cooling water tank 401. The filter box 5 is equipped with a filter screen, which can filter and collect moisture in the air. The collected moisture flows into the cooling water tank 401 through the water collection pipes.

[0022] The transmission device 6 includes a transmission rod 603 rotatably mounted below the transport box 2 via a bearing seat. A transmission gear 604 is welded and fixed to one end of the transmission rod 603. A transmission belt 602 is adapted to be fitted on the surface of the transmission gear 604. A drive gear 601 is adapted to be fitted to the other end of the transmission belt 602. The drive gear 601 is welded and fixed to the surface of the circulating shaft 301. Several transmission bevel gears 605 are uniformly welded and fixed to the surface of the transmission rod 603. A driven bevel gear 606 meshes with the surface of the transmission bevel gear 605. A transmission square rod 607 is welded and fixed above the shaft of the driven bevel gear 606.

[0023] The transport device 8 includes a ventilation box 801, which has multiple ventilation holes on both sides. A detachable cover plate 802 is fitted on the top of the ventilation box 801. Connecting plates 803 are welded and fixed to both ends of the cover plate 802. An adsorption roller 804 is rotatably mounted on the inner side of the connecting plate 803 via bearings. Adsorption cotton is provided on the surface of the adsorption roller 804. Placement plates 805 are welded and fixed to both sides below the ventilation box 801. A drive roller 806 and a driven roller 807 are rotatably mounted on the inner side of the placement plate 805 via bearings. Rubber sleeves are fitted on the surfaces of the drive roller 806 and the driven roller 807 to increase the friction with fruits and vegetables.

[0024] A power box 808 is welded and fixed to one end of the ventilation box 801. A rotatable power rod 809 is rotatably installed inside the power box 808 via a bearing. A square groove is opened on the lower part of the inner wall of the power rod 809. A square clamping rod 812 that matches the square groove is welded and fixed to the top of the power rod 809. A first power bevel gear 810 is welded and fixed to the surface of the power rod 809. A second power bevel gear 811 meshes with one side of the first power bevel gear 810. The second power bevel gear 811 is welded and fixed to one end of the drive roller 806.

[0025] A driven box 821 is welded and fixed to the other end of the ventilation box 801. A first gear 813 is rotatably installed in the driven box 821 via a bearing. The first gear 813 is welded and fixed to one end of the driving roller 806. A detachable T-shaped dust box 815 is snapped and connected to the bottom of the ventilation box 801. A moving groove 819 is opened on the surface of the T-shaped dust box 815. A reciprocating screw 816 is rotatably installed in the T-shaped dust box 815 via a bearing. A second gear 814 is welded and fixed to one end of the reciprocating screw 816. The second gear 814 meshes with the first gear 813. A sliding plate 817 is threadedly fitted on the surface of the reciprocating screw 816. A scraper 818 that moves above the moving groove 819 is welded and fixed above the sliding plate 817. The scraper 818 contacts the bottom of the ventilation box 801. Dust collection ports 820 are opened at both ends of the T-shaped dust box 815.

[0026] When using this agricultural product pre-cooling transport vehicle, firstly, round or oval fruits and vegetables are placed between the active roller 806 and driven roller 807 inside the ventilation box 801, arranged evenly in a row. After placement, the cover plate 802 is placed over the ventilation box 801, so that the adsorption roller 804 contacts the surface of the fruits and vegetables. Then, the ventilation box 801 is placed inside the transport box 2. The power connection is achieved by engaging the square slot of the power rod 809 in the power box 808 on one side of the ventilation box 801 with the transmission square rod 607 inside the transport box 2. The position of the baffle plate 7 is adjusted according to the number and size of the ventilation boxes 801, so that the ventilation boxes 801 are evenly arranged inside the transport box 2.

[0027] During vehicle transportation, external wind or airflow within the transport box drives the circulating fans 303 to rotate. Through the cooperation of the circulating gears 302 and the circulating belt 304, all circulating fans 303 rotate synchronously, enhancing the airflow circulation effect. Simultaneously, the water pump in the cooling water tank 401 is activated, delivering cooling water to the cooling water pipes 402 surrounding the circulating shaft 301. The airflow generated by the circulating fans 303 is cooled by the cooling water pipes 402 and then circulates within the transport box 2, achieving uniform cooling. The filter box 5 collects moisture from the circulating airflow and discharges it into the cooling water tank 401 through the water collection pipe, achieving water resource recycling.

[0028] When the circulating shaft 301 rotates, it drives the driving gear 601 on its surface to rotate. The driving gear 601 drives the transmission gear 604 to rotate via the transmission belt 602. The transmission gear 604 drives the transmission rod 603 to rotate. The transmission bevel gear 605 on the surface of the transmission rod 603 drives the meshing driven bevel gear 606 to rotate. The driven bevel gear 606 drives the transmission square rod 607 to rotate. Since the transmission square rod 607 is embedded in the square groove of the power rod 809, it drives the power rod 809 to rotate. The power rod 809 drives the first power bevel gear 810 to rotate. The first power bevel gear 810 drives the meshing second power bevel gear 811 to rotate. The second power bevel gear 811 drives the driving roller 806 to rotate. The driving roller 806 drives the fruits and vegetables to rotate during transportation. The driven roller 807 rotates synchronously with it to prevent the fruits and vegetables from piling up and being squeezed. At the same time, the adsorption roller 804 on the cover plate 802 rotates under the influence of the fruits and vegetables, cleaning and adsorbing dust on the surface of the fruits and vegetables.

[0029] While the drive roller 806 rotates, it drives the first gear 813 inside the driven box 821 to rotate. The first gear 813 drives the meshing second gear 814 to rotate. The second gear 814 drives the reciprocating screw 816 to rotate. The reciprocating screw 816 drives the sliding plate 817 on the surface to move back and forth. The sliding plate 817 drives the scraper 818 to move back and forth at the bottom of the vent box 801, scraping the dust cleaned by the adsorption roller to the dust collection ports 820 at both ends of the T-shaped dust box 815. The dust collects in the T-shaped dust box through the dust collection ports. After transportation is completed, the T-shaped dust box can be disassembled and cleaned.

[0030] Example 2: Please see Figure 1-6 and Figure 10-11 The present invention provides a technical solution: a pre-cooled agricultural product transport vehicle, comprising a vehicle body 1, a transport box 2 fixedly mounted on the surface of the vehicle body 1 by bolts, a circulation device 3 welded and fixed to one end of the inner wall of the transport box 2, a cooling device 4 fixedly bolted below the circulation device 3, a filter box 5 fixedly bolted to one side of the circulation device 3, a transmission device 6 rotatably mounted on one side of the lower part of the transport box 2 via a bearing seat, several movable baffles 7 placed on the inner wall of the transport box 2, several ventilation devices 9 adapted and connected to the transmission device 6 placed inside the transport box 2, and optionally a motor installed in the circulation device 3, the motor being connected to the vehicle body power supply, and its gear output end meshing with the circulation gear of the circulation device 3 through a gear, thereby driving the motor to run through the vehicle's own power supply after the vehicle starts transporting, thus enabling the circulation device 3 to operate. The ventilation device 9 includes a rectangular ventilation box 901. A vertically arranged ventilation plate is fixedly installed inside the ventilation box 901 by bolts. The ventilation plate divides the interior of the ventilation box 901 into a left-side air box 910 and a right-side ventilation filter box 911. Inside the air box 910, several parallel second ventilation gears 908 are rotatably installed via bearing seats. A synchronously rotating ventilation fan 909 is welded and fixed at the axis of each second ventilation gear 908. The blades of the ventilation fan 909 have an arc-shaped structure, which can enhance the airflow disturbance effect. One end of the ventilation box 901 is fixedly connected to a cuboid power box 902 by bolts. Inside the power box 902, a ventilation rod 903 is rotatably mounted via bearings. The lower end face of the ventilation rod 903 has a square groove that matches the transmission rod in the transmission device 6. Power transmission is achieved by engaging the square groove with the transmission rod. A first ventilation bevel gear 904 is welded and fixed to the surface of the ventilation rod 903. A vertically arranged second ventilation bevel gear 905 is meshed and connected to one side of the first ventilation bevel gear 904. A horizontally extending connecting shaft is welded and fixed to the axis of the second ventilation bevel gear 905. A first ventilation gear 906 is welded and fixed to the end of the connecting shaft away from the second ventilation bevel gear 905. An annular ventilation belt 907 is fitted on the surface of the first ventilation gear 906. The side of the ventilation belt 907 away from the first ventilation gear 906 is simultaneously adapted and connected to several second ventilation gears 908 inside the ventilation box 910 to form a synchronous transmission structure. The ventilation filter box 911 has a drawer-type installation slot inside, in which a removable washing and wetting board is placed. The washing and wetting board is made of porous sponge material, and its surface is adsorbed with water or preservative solution. Several ventilation holes are opened on the side wall and ventilation plate of the ventilation filter box 911 to connect the air box 910 with the interior of the ventilation filter box 911. A ventilation cover 912 is installed on the top of the ventilation box 901. During vehicle transportation, the circulating fan 303 rotates under the action of airflow, which drives the drive gear 601 on the circulating shaft 301 to rotate. The drive gear 601 drives the transmission rod and transmission bevel gear to rotate through the transmission belt 602, and then drives the transmission square rod to rotate through the driven bevel gear. The ventilation device 9 engages with the transmission square rod through the square groove at the lower end of the ventilation rod 903, so that the transmission square rod drives the ventilation rod 903 to rotate synchronously. When the ventilation rod 903 rotates, the first ventilation bevel gear 904 on its surface drives the meshing second ventilation bevel gear 905 to rotate. The second ventilation bevel gear 905 drives the first ventilation gear 906 to rotate through the connecting shaft. The first ventilation gear 906 drives all the second ventilation gears 908 in the air box 910 to rotate synchronously through the ventilation belt 907, which ultimately drives each ventilation fan 909 to rotate and generate airflow. The airflow generated by the ventilation fan 909 first passes through the air box 910 and then enters the ventilation filter box 911 through the ventilation holes on the ventilation plate. When the airflow passes through the washing plate, the washing plate can filter out tiny impurities in the airflow and release moisture to regulate the humidity of the airflow. The treated airflow is discharged from the ventilation holes on the side wall of the ventilation filter box 911 into the transport box 2, forming a circulating airflow with suitable temperature and humidity, which acts evenly on the agricultural products in the transport box 2. After a period of use, the washing plate can be directly pulled out from the installation slot of the ventilation filter box 911 for cleaning, replacement or replenishment of solution, which is convenient.

[0031] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pre-cooling transport vehicle for agricultural products, comprising a vehicle body (1), wherein a transport box (2) is fixedly mounted on the surface of the vehicle body (1), characterized in that: A circulation device (3) is fixedly provided on one end of the inner wall of the transport box (2). A cooling device (4) is fixedly provided below the circulation device (3). A filter box (5) is fixedly provided on one side of the circulation device (3). A transmission device (6) is provided on one side below the transport box (2). Several movable baffles (7) are placed on the inner wall of the transport box (2). Several transport devices (8) that are adapted to and connected to the transmission device (6) are provided inside the transport box (2). An air inlet is fixedly provided above the front end of the transport box (2). The air inlet communicates with the circulation device (3) and the filter box (5). Two high-speed fans (10) are provided at the lower rear end of the transport box (2).

2. The agricultural product pre-cooling transport vehicle according to claim 1, characterized in that: The circulation device (3) includes a plurality of circulation shafts (301) fixedly installed on one end of the inner wall of the transport box (2). One end of the circulation shaft (301) is provided with a rotatable circulation fan (303). A synchronously rotating circulation gear (302) is fixedly provided on one side of the circulation fan (303). A circulation belt (304) is adapted to the surface of the circulation gear (302).

3. The agricultural product pre-cooling transport vehicle according to claim 2, characterized in that: The cooling device (4) includes a cooling water tank (401) fixedly installed below one end of the inner wall of the transport box (2). A water pump is fixedly installed inside the cooling water tank (401), and a cooling water pipe (402) is fixedly installed at the water outlet of the water pump. The cooling water pipe (402) surrounds the circulation shaft (301), and the water inlet of the water pump extends into the cooling water tank (401).

4. The agricultural product pre-cooling transport vehicle according to claim 3, characterized in that: Several water collection pipes are fixedly installed below the filter box (5), and the water collection pipes extend into the inner wall of the cooling water tank (401).

5. The agricultural product pre-cooling transport vehicle according to claim 2, characterized in that: The transmission device (6) includes a transmission rod (603) rotatably mounted below the transport box (2). One end of the transmission rod (603) is fixedly provided with a transmission gear (604). A transmission belt (602) is adapted to the surface of the transmission gear (604). The other end of the transmission belt (602) is adapted to provide a drive gear (601). The drive gear (601) is fixedly mounted on the surface of the circulation shaft (301). The transmission rod (603) has a plurality of transmission bevel gears (605) evenly distributed on its surface. A driven bevel gear (606) meshes with the surface of the transmission bevel gear (605). A transmission square rod (607) is fixedly disposed above the shaft of the driven bevel gear (606).

6. The agricultural product pre-cooling transport vehicle according to claim 1, characterized in that: The transport device (8) includes a ventilated box (801), with vent holes on both sides of the ventilated box (801). A detachable cover plate (802) is fitted on the top of the ventilated box (801). Connecting plates (803) are fixed at both ends of the cover plate (802). A rotatable adsorption roller (804) is provided on the inner side of the connecting plate (803). Placement plates (805) are fixed on both sides below the ventilated box (801). A rotatable active roller (806) and a driven roller (807) are provided on the inner side of the placement plate (805). A power box (808) is fixedly provided at one end of the vent box (801). A rotatable power rod (809) is movably provided inside the power box (808). A square groove is provided on the lower part of the inner wall of the power rod (809). A square clamp rod (812) adapted to the square groove is fixedly provided on the upper part of the power rod (809). A first power bevel gear (810) is fixedly provided on the surface of the power rod (809). A second power bevel gear (811) is meshed on one side of the first power bevel gear (810). The second power bevel gear (811) is fixedly connected to one end of the drive roller (806). The other end of the vent box (801) is fixedly provided with a driven box (821), and the driven box (821) is provided with a rotatable first gear (813), which is fixedly connected to one end of the driving roller (806); Below the ventilation box (801) is a detachable T-shaped dust box (815). The surface of the T-shaped dust box (815) is provided with a moving groove (819). The T-shaped dust box (815) is provided with a rotatable reciprocating screw (816). One end of the reciprocating screw (816) is fixedly provided with a second gear (814). The second gear (814) meshes with the first gear (813). The surface of the reciprocating screw (816) is threadedly fitted with a sliding plate (817). Above the sliding plate (817) is a scraper (818) that moves above the moving groove (819). Dust collection ports (820) are provided at both ends of the T-shaped dust box (815).

7. The agricultural product pre-cooling transport vehicle according to claim 1, characterized in that: The transport device (8) is replaced with a ventilation device (9), which includes a ventilation box (901). The ventilation box (901) is divided into a wind box (910) and a ventilation filter box (911) by a ventilation plate. The wind box (910) is provided with a plurality of rotatable second ventilation gears (908). A ventilation fan (909) is fixedly provided on one side of the second ventilation gear (908). A ventilation cover (912) is provided on the top of the ventilation box (901). A ventilation energy box (902) is fixedly provided at one end of the ventilation box (901). A ventilation rod (903) is fixedly provided inside the ventilation energy box (902). A first ventilation bevel gear (904) is fixedly provided on the surface of the ventilation rod (903). A second ventilation bevel gear (905) is meshed on one side of the first ventilation bevel gear (904). A synchronously rotating first ventilation gear (906) is fixedly provided on one side of the second ventilation bevel gear (905). A ventilation belt (907) is adapted to be provided on the surface of the first ventilation gear (906). The ventilation belt (907) is adapted to be connected to the second ventilation gear (908). A removable wet plate is placed inside the ventilation filter box (911).

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