Fresh produce logistics refrigerated vehicle compartment

Abstract

The present application relates to the technical field of carriages, and particularly relates to a fresh produce logistics refrigerated carriage, which comprises a carriage body, a movable door rotatably installed at the rear end of the carriage body, a bottom plate fixedly installed at the lower surface of the carriage body, a plurality of groups of wheels rotatably installed at the lower surface of the bottom plate, a refrigeration mechanism arranged at the upper end of the inner front wall of the carriage body, two fixed columns respectively fixedly connected at the two corners of the inner front end of the carriage body, a plurality of lifting rods arranged between the two fixed columns, a drainage mechanism arranged at the lower surface of the lifting rods, a sliding opening formed in the inner side of the lifting rods, a pressing plate connected to the inner top surface of the sliding opening through a first elastic mechanism, and a plurality of moving plates slidingly inserted into the inner side of the sliding opening. The adjustable lifting rods and the baffle can precisely control the ventilation gap during stacking, standardize the stacking, flexibly adapt to multiple specifications of preservation boxes, cooperate with the drainage mechanism to layer the air guide, uniformly distribute the cold air, and improve the utilization rate of the refrigeration space and the preservation effect.

Description

Technical Field

[0001] This invention relates to the field of vehicle compartment technology, and more particularly to a refrigerated vehicle compartment for fresh food logistics. Background Technology

[0002] Currently, refrigerated trucks used for fresh produce logistics typically have multiple insulated boxes stacked inside to hold fresh goods. To ensure the freshness of the goods, the industry generally requires that a certain ventilation gap be left between the insulated boxes and the front inner wall of the truck after they are stacked, so that cold air can circulate and heat can be accumulated at the front of the insulated boxes, which would affect the freshness of the produce.

[0003] However, in the current refrigerated trucks, the stacking spacing of the refrigerated boxes during loading relies on manual visual control by the operators. This manual operation is highly subjective and prone to error. Some refrigerated boxes have too large a gap with the front wall of the truck, resulting in wasted space and reduced loading capacity per shipment. Other refrigerated boxes have too small a gap or no gap at all, which directly blocks the cold air circulation channel, causing airflow obstruction and preventing normal ventilation and heat exchange.

[0004] Meanwhile, when stacking refrigerated boxes of different sizes and heights in each batch, there are no corresponding limiting standards, which further reduces the neatness of stacking layer by layer, resulting in extremely poor overall standardization of refrigeration operations.

[0005] In addition, the existing refrigerated truck cooling and air supply structure design is relatively simple. The air conditioning units inside the truck mostly use a direct-blowing air supply mode, where cold air can only directly blow onto the top layer of the stacked refrigerated boxes, while the remaining cold air relies on gravity to slowly descend and diffuse. This air supply method has obvious defects in air supply dead zones and uneven cooling. Cold air cannot be accurately directed to the middle of the stacked refrigerated boxes, resulting in the middle refrigerated boxes not being able to fully contact the cold air and causing uneven temperature. Therefore, a new type of refrigerated truck for fresh food logistics is proposed. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a refrigerated truck for fresh food logistics.

[0007] To achieve the above objectives, the technical solution adopted by this invention is as follows: a refrigerated truck body for fresh produce logistics, comprising a body, a movable door rotatably installed at the rear end of the body, a floor plate fixedly installed on the lower surface of the body, several sets of wheels rotatably installed on the lower surface of the floor plate, a refrigeration mechanism provided at the upper end of the inner front wall of the body, fixed columns fixedly connected at two corners of the inner front end of the body, several lifting rods provided between the two fixed columns, a diversion mechanism provided on the lower surface of the lifting rods, and a sliding opening provided on the inner side of the lifting rods, the inner top surface of the sliding opening being... The first elastic mechanism is connected to a pressure plate. Several movable plates are slidably inserted into the inner side of the sliding opening. The movable plates abut against the lower surface of the pressure plate. Insert blocks are fixedly connected to both sides of the pressure plate. The insert blocks slide through the side surface of the lifting rod. A baffle is fixedly connected to the rear ends of several movable plates. Adjusting seats are fixedly installed at both ends of the lifting rod. A clamping hoop is connected to the rear surface of the adjusting seat through a second elastic mechanism. A clamping cylinder is threadedly connected to the rear surface of the clamping hoop and the side closest to the lifting rod. The lower surface of the clamping cylinder clamps the upper surface of the insert block.

[0008] Preferably, the first elastic mechanism includes a first T-post fixedly connected to the upper surface of the pressure plate, the first T-post slidingly penetrating the inner top surface of the slide, and a first compression spring sleeved on the outer surface of the first T-post, the upper and lower ends of the first compression spring being fixedly connected to the inner top surface of the slide and the upper surface of the pressure plate, respectively.

[0009] Preferably, side openings are provided on both sides of the sliding opening, the insert block slides through the inside of the side opening, and the insert block and the side opening slide vertically together.

[0010] Preferably, the rear surface of the adjusting seat is provided with an arc-shaped groove, and the fixing column slides through the inner side of the arc-shaped groove.

[0011] Preferably, the second elastic mechanism includes a plurality of second T-posts fixedly connected to the rear surface of the adjusting seat and away from the lifting rod. The second T-posts slide through the front surface of the clamping hoop, and a second compression spring is sleeved on the outer surface of the second T-post. The front end of the second compression spring is fixedly connected to the rear surface of the clamping hoop.

[0012] Preferably, a circular portion is provided at the front end of the outer surface of the clamping cylinder, and a frustum is formed at the front end of the circular portion. The circular portion clamps the upper surface of the insert block, and a threaded post is fixedly connected to the rear surface of the adjusting seat. The threaded post slides through the front surface of the clamping clamp, and the clamping cylinder is threaded onto the outer surface of the threaded post.

[0013] Preferably, the diversion mechanism includes several connecting blocks fixedly connected to the lower surface of the lifting rod, and the lower ends of the several connecting blocks are jointly fixedly connected to a guide plate.

[0014] Preferably, the refrigeration mechanism includes an indoor air conditioning unit fixedly installed on the upper end of the front wall of the compartment, an outdoor air conditioning unit fixedly installed on the front surface of the compartment, and a refrigerant circulation pipeline connecting the outdoor air conditioning unit and the indoor air conditioning unit for heat exchange.

[0015] Preferably, a triangular plate is provided at the upper end between the two fixed columns, and a fixed seat is fixedly connected to each end of the triangular plate. The fixed seat is fixedly sleeved on the outer surface of the fixed column. The triangular plate is located near the bottom of the indoor unit of the air conditioner. A vertical guide surface is provided on the front surface of the triangular plate, and an oblique guide surface is provided on the rear surface of the triangular plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses a lifting rod and a baffle to position and limit the refrigerated box, which can accurately control the ventilation gap between the refrigerated box and the front inner wall of the box. It eliminates the method of manually visually judging the distance and eliminates human operation error. It avoids the waste of loading space in the car body due to excessive gap, and also prevents the blockage of the cold air passage due to insufficient gap, thus ensuring the normal circulation and heat exchange of cold air. 2. The baffle in this invention can be used as a limiting reference for stacking the second and above layers of fresh food boxes, constraining the placement of the fresh food boxes during stacking, improving the neatness of multi-layer fresh food box stacking, and standardizing the fresh food loading and stacking operation process. 3. The height of the lifting rod and the front and rear positions of the baffle can be adjusted independently and quickly in the same batch of fresh-keeping boxes. It can flexibly adapt to the height of the fresh-keeping boxes and the length of the box side extension in the same batch of fresh-keeping boxes. It has strong versatility and can flexibly adapt to the transportation needs of fresh-keeping boxes. 4. After the height of the lifting rod is adjusted, the corresponding airflow guiding mechanism guides the air conditioning cold air in layers, accurately delivering the cold air to the upper front of each layer of the preservation box. The cold air flows obliquely along the gap between adjacent preservation boxes, effectively reducing dead air angles and ensuring uniform cooling of the preservation box in the middle position, thus improving the fresh food refrigeration and preservation effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a refrigerated truck for fresh food logistics according to the present invention; Figure 2 This is a schematic diagram of the rear view of a refrigerated truck compartment for fresh food logistics according to the present invention. Figure 3 This is a partial structural schematic diagram of a refrigerated truck compartment for fresh food logistics according to the present invention; Figure 4 This is a schematic diagram of the fixed column of a refrigerated truck compartment for fresh food logistics according to the present invention; Figure 5 This invention relates to a refrigerated truck compartment for fresh food logistics. Figure 4 Enlarged view of point A in the middle; Figure 6This is a cross-sectional view of the triangular plate of a refrigerated truck compartment for fresh produce logistics according to the present invention. Figure 7 This is a schematic diagram of the air deflector of a refrigerated truck compartment for fresh produce logistics according to the present invention; Figure 8 This is a cross-sectional view of the lifting rod of a refrigerated truck for fresh food logistics according to the present invention; Figure 9 This is a cross-sectional view of the adjustable seat of a refrigerated truck compartment for fresh produce logistics according to the present invention; Figure 10 This is a schematic diagram of the placement of the refrigerated box in a fresh food logistics refrigerated truck according to the present invention; Figure 11 This invention relates to a refrigerated truck compartment for fresh food logistics. Figure 10 Enlarged view of section B in the middle.

[0018] The components are as follows: 1. Body; 2. Floor plate; 3. Wheels; 4. Fixed column; 5. Lifting rod; 6. Connecting block; 7. Guide plate; 8. Sliding port; 9. Pressure plate; 10. First T-post; 11. First compression spring; 12. Moving plate; 13. Baffle; 14. Side opening; 15. Insert block; 16. Adjusting seat; 17. Pressure clamp; 18. Arc groove; 19. Second T-post; 20. Second compression spring; 21. Threaded column; 22. Pressure cylinder; 23. Circular part; 24. Round table; 25. Fixed seat; 26. Triangular plate; 27. Vertical guide surface; 28. Sloping guide surface; 29. ​​Air conditioner indoor unit; 30. Air conditioner outdoor unit; 31. Movable door; 32. Refrigerated box; 33. Box lid; 34. Box side. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figures 1-11The refrigerated truck for fresh produce logistics shown includes a body 1. A movable door 31 is rotatably installed at the rear end of the body 1. A floor plate 2 is fixedly installed on the lower surface of the body 1. Several sets of wheels 3 are rotatably installed on the lower surface of the floor plate 2. A refrigeration mechanism is provided at the upper end of the inner front wall of the body 1. Fixed columns 4 are fixedly connected to the two corners of the inner front end of the body 1. Several lifting rods 5 are arranged between the two fixed columns 4. A diversion mechanism is provided on the lower surface of the lifting rods 5. A sliding opening 8 is opened on the inner side of the lifting rod 5. A pressure plate 9 is connected to the inner top surface of the sliding opening 8 through a first elastic mechanism. Several movable plates 12 are slidably inserted into the inner side of the lifting rod 5. The movable plates 12 abut against the lower surface of the pressure plate 9. The two sides of the pressure plate 9 are respectively fixedly connected to the insert blocks 15. The insert blocks 15 slide through the side surface of the lifting rod 5. The rear ends of the several movable plates 12 are fixedly connected to the baffle 13. The two ends of the lifting rod 5 are respectively fixedly provided with adjusting seats 16. The rear surface of the adjusting seat 16 is connected to the clamping hoop 17 through the second elastic mechanism. The rear surface of the clamping hoop 17 and the side close to the lifting rod 5 are threadedly connected to the clamping cylinder 22. The lower surface of the clamping cylinder 22 presses against the upper surface of the insert block 15.

[0021] The first elastic mechanism includes a first T-post 10 fixedly connected to the upper surface of the pressure plate 9. The first T-post 10 slides through the inner top surface of the slide 8. A first compression spring 11 is sleeved on the outer surface of the first T-post 10. The upper and lower ends of the first compression spring 11 are fixedly connected to the inner top surface of the slide 8 and the upper surface of the pressure plate 9, respectively. The elastic force of the first compression spring 11 makes the pressure plate 9 press tightly against the surface of the moving plate 12. Several first T-posts 10 and first compression springs 11 are arranged in the horizontal direction to make the pressure on the upper surface of the pressure plate 9 even.

[0022] Side openings 14 are provided on both sides of the sliding opening 8. The insert block 15 slides through the inner side of the side opening 14, and the insert block 15 and the side opening 14 slide vertically together. The insert block 15 can slide up and down along the inner side of the side opening 14. During the adjustment of the baffle 13, the insert block 15 can move up along the inner side of the side opening 14 to avoid the pressure of the pressure plate 9 pressing the moving plate 12 too much, which would cause inconvenience in adjustment.

[0023] An arc-shaped groove 18 is provided on the rear surface of the adjusting seat 16. The fixed post 4 slides through the inner side of the arc-shaped groove 18. The arc-shaped groove 18 and the clamping hoop 17 together clamp the surface of the fixed post 4. There is a gap between the clamping hoop 17 and the adjusting seat 16. This gap can provide the clamping hoop 17 with a margin of movement. When locked, the clamping hoop 17 can be displaced to press against the fixed post 4, so as to lock and position the fixed post 4.

[0024] The second elastic mechanism includes several second T-posts 19 fixedly connected to the rear surface of the adjusting seat 16 and away from the lifting rod 5. The second T-posts 19 slide through the front surface of the clamping hoop 17. A second compression spring 20 is sleeved on the outer surface of the second T-post 19. The front end of the second compression spring 20 is fixedly connected to the rear surface of the clamping hoop 17. At least two second T-posts 19 are provided to ensure that the clamping hoop 17 only moves in the front-back direction. The elastic force of the second compression spring 20 makes the clamping hoop 17 always pre-pressed on the surface of the fixed post 4. When the adjusting lifting rod 5 moves up and down, the height can be maintained. Later, the clamping cylinder 22 is tightened to achieve the purpose of locking and positioning.

[0025] A circular portion 23 is provided at the front end of the outer surface of the clamping cylinder 22. A frustum 24 is formed at the front end of the circular portion 23. The circular portion 23 clamps the upper surface of the insert block 15. A threaded post 21 is fixedly connected to the rear surface of the adjusting seat 16. The threaded post 21 slides through the front surface of the clamping clamp 17. The clamping cylinder 22 is threaded onto the outer surface of the threaded post 21. The outer surface of the rear half of the clamping cylinder 22 has a hexagonal prism structure, which is convenient for wrench to tighten. When the clamping cylinder 22 is tightened, the frustum 24 pushes the rear side of the insert block 15, causing the insert block 15 to move slightly downward. Then, the circular portion 23 clamps the insert block 15, thereby locking and limiting the pressure plate 9.

[0026] The air diversion mechanism includes several connecting blocks 6 fixedly connected to the lower surface of the lifting rod 5. The lower ends of the several connecting blocks 6 are all fixedly connected to the air guide plate 7. The connecting blocks 6 ensure that the air guide plate 7 is installed stably. The air guide plate 7 plays the role of guiding cold air and guiding the airflow into the front surface of each layer of the preservation box 32 near the top.

[0027] The refrigeration mechanism includes an indoor air conditioning unit 29 fixedly installed on the upper part of the front wall of the compartment 1, and an outdoor air conditioning unit 30 fixedly installed on the front surface of the compartment 1. A refrigerant circulation pipeline connects the outdoor air conditioning unit 30 and the indoor air conditioning unit 29 for heat exchange. According to the common refrigeration scheme in the compartment 1 in the prior art, refrigerant flows in the pipeline. The outdoor unit is responsible for compression and heat dissipation, and the indoor air conditioning unit 29 absorbs heat and cools down, thereby continuously reducing the internal ambient temperature of the compartment 1 and achieving basic refrigeration and temperature control.

[0028] A triangular plate 26 is provided at the upper end between the two fixed columns 4. Fixed seats 25 are fixedly connected to both ends of the triangular plate 26. The fixed seats 25 are fixedly sleeved on the outer surface of the fixed column 4. The triangular plate 26 is located near the bottom of the indoor unit 29 of the air conditioner. A vertical guide surface 27 is provided on the front surface of the triangular plate 26, and an oblique guide surface 28 is provided on the rear surface of the triangular plate 26. The vertical guide surface 27 guides the cold air to flow downward to cooperate with the airflow of the guide plate 7 below. The oblique guide surface 28 guides the cold air to flow obliquely to the surface of the uppermost fresh-keeping box 32 to avoid the problem of excessive temperature at the uppermost fresh-keeping box 32 caused by the sinking of cold air.

[0029] When the operator places the refrigerated box 32 inside the compartment 1, the height of the lifting rod 5 can be adjusted according to the height of the refrigerated box 32, so that the front side of the box edge 34 is against the rear side of the lifting rod 5, and the lower surface of the baffle 13 abuts against the front end of the upper surface of the box edge 34. When stacking the second layer of refrigerated boxes 32, the upper refrigerated box 32 is placed on the lid 33 of the lower refrigerated box 32. The baffle 13 can act as a limiting indicator, so that the lower end of the front surface of the refrigerated box 32 is against the baffle 13. After stacking layer by layer, a fixed gap is maintained between all refrigerated boxes 32 and the front inner wall of the compartment 1, ensuring smooth airflow at the front of the refrigerated box 32. (See attached...) Figure 10 , Figure 11 The arrangement of the two-layer food storage boxes 32 is shown only and is not intended to limit the actual number of food storage boxes 32 loaded in this application.

[0030] In addition, the guide plate 7 provided with each lifting rod 5 can guide the cold air. After the air conditioner indoor unit 29 outputs cold air, the airflow is partially diverted downward through the vertical guide surface 27, and then guided to the lower rear through the guide plate 7, reaching the upper front position of each layer of the preservation box 32. The cold air flows obliquely downward along the gap between the stacked preservation boxes 32, achieving sufficient and uniform cooling in the middle position of the preservation box 32.

[0031] For different batches of the food storage box 32, the height of the food storage box 32 and the extension length of the side 34 are different. For the specifications of a batch of food storage boxes 32, it is necessary to adjust the height position of the lifting rod 5 and the front and rear position of the baffle 13. The specific adjustment method is as follows: The operator loosens the clamping cylinders 22 on both sides, and the circular part 23 disengages from the insert block 15. Then, the adjusting seat 16 can slide up and down along the surface of the fixed column 4. During the sliding, due to the elastic force of the second compression spring 20, the clamping hoop 17 is pressed against the surface of the fixed column 4. After the operator adjusts the height of the lifting rod 5, it is not easy for it to slide and shift naturally. At the same time, since the circular part 23 no longer presses against the insert block 15, the baffle 13 can be moved in the front and back direction, so that the moving plate 12 slides back and forth. During the sliding, due to the elastic force of the first compression spring 11, the pressure plate 9 presses against the moving plate 12. After the baffle 13 is adjusted, it is not easy for it to slide and shift naturally. After the height of the lifting rod 5 and the front and rear positions of the baffle 13 are adjusted, tighten the clamping cylinder 22. During the tightening process, the truncated cone 24 pushes the rear edge of the insert 15 to ensure that the circular part 23 can reach the upper surface of the insert 15, thereby achieving the function of clamping and limiting the insert 15. At the same time, the clamping cylinder 22 presses the clamping hoop 17 forward, so that the fixed column 4 is clamped and limited by the clamping hoop 17 and the adjusting seat 16. By rotating the clamping cylinder 22, the purpose of quick positioning and locking can be achieved, and the adjustment is convenient.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A refrigerated truck for fresh produce logistics, comprising a compartment (1), a movable door (31) rotatably mounted at the rear end of the compartment (1), a floor plate (2) fixedly mounted on the lower surface of the compartment (1), and a plurality of wheels (3) rotatably mounted on the lower surface of the floor plate (2), characterized in that: A refrigeration mechanism is provided on the upper end of the inner front wall of the compartment (1). Fixed columns (4) are fixedly connected to the two corners of the inner front end of the compartment (1). Several lifting rods (5) are provided between the two fixed columns (4). A flow-guiding mechanism is provided on the lower surface of the lifting rods (5). A sliding opening (8) is provided on the inner side of the lifting rods (5). A pressure plate (9) is connected to the inner top surface of the sliding opening (8) through a first elastic mechanism. Several moving plates (12) are slidably inserted into the inner side of the sliding opening (8). The moving plates (12) abut against the lower surface of the pressure plate (9). Insert blocks (15) are fixedly connected to both sides of the pressure plate (9). The insert blocks (15) slide through the side surface of the lifting rod (5). A baffle (13) is fixedly connected to the rear end of several moving plates (12). Adjustment seats (16) are fixedly provided at both ends of the lifting rod (5). A clamping hoop (17) is connected to the rear surface of the adjustment seat (16) through a second elastic mechanism. A clamping cylinder (22) is threadedly connected to the rear surface of the clamping hoop (17) and the side close to the lifting rod (5). The lower surface of the clamping cylinder (22) presses against the upper surface of the insert block (15).

2. The refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The first elastic mechanism includes a first T-post (10) fixedly connected to the upper surface of the pressure plate (9). The first T-post (10) slides through the inner top surface of the slide (8). A first compression spring (11) is sleeved on the outer surface of the first T-post (10). The upper and lower ends of the first compression spring (11) are fixedly connected to the inner top surface of the slide (8) and the upper surface of the pressure plate (9), respectively.

3. The refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The sliding opening (8) has side openings (14) on both sides respectively. The insert (15) slides through the inside of the side opening (14) and the insert (15) and the side opening (14) slide together vertically.

4. A refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The rear surface of the adjusting seat (16) is provided with an arc-shaped groove (18), and the fixing column (4) slides through the inner side of the arc-shaped groove (18).

5. A refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The second elastic mechanism includes a plurality of second T-posts (19) fixedly connected to the rear surface of the adjusting seat (16) and away from the lifting rod (5). The second T-posts (19) slide through the front surface of the clamping hoop (17). The outer surface of the second T-posts (19) is fitted with a second compression spring (20). The front end of the second compression spring (20) is fixedly connected to the rear surface of the clamping hoop (17).

6. A refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The outer surface of the clamping cylinder (22) is provided with a circular part (23) at the front end. The front end of the circular part (23) is provided with a frustum (24). The circular part (23) clamps the upper surface of the insert block (15). The rear surface of the adjusting seat (16) is fixedly connected with a threaded column (21). The threaded column (21) slides through the front surface of the clamping clamp (17). The clamping cylinder (22) is threaded onto the outer surface of the threaded column (21).

7. A refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The diversion mechanism includes several connecting blocks (6) fixedly connected to the lower surface of the lifting rod (5), and the lower ends of the several connecting blocks (6) are fixedly connected to a guide plate (7).

8. A refrigerated truck for fresh produce logistics according to claim 1, characterized in that: The refrigeration mechanism includes an indoor air conditioning unit (29) fixedly installed on the upper part of the front wall of the compartment (1), an outdoor air conditioning unit (30) fixedly installed on the front surface of the compartment (1), and a refrigerant circulation pipeline connecting the outdoor air conditioning unit (30) and the indoor air conditioning unit (29) for heat exchange.

9. A refrigerated truck for fresh produce logistics according to claim 8, characterized in that: A triangular plate (26) is provided at the upper end between the two fixed columns (4). The two ends of the triangular plate (26) are respectively fixedly connected to the fixed seats (25). The fixed seats (25) are fixedly sleeved on the outer surface of the fixed column (4). The triangular plate (26) is located near the lower part of the air conditioner indoor unit (29). The front surface of the triangular plate (26) is provided with a vertical guide surface (27), and the rear surface of the triangular plate (26) is provided with an oblique guide surface (28).

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