Freight carriage applied to lightweight logistics

Abstract

The invention discloses a freight carriage applied to lightweight logistics, and relates to the field of small express logistics and individual industry and commerce, the freight carriage comprises a fixed container arranged at the top end of a transport vehicle, a shelf skin is arranged on one side of the fixed container, an extension mechanism is arranged on one side of the middle of the top end of the fixed container, and a container rotating shaft is arranged at one end of the extension mechanism; a goods shelf assembly is arranged on the outer side of the container rotating shaft and located in the fixed container. The system is scientific and novel in structure, focuses on achieving high efficiency of logistics vehicle hardware, completes integration of goods sorting and transporting and labor-saving loading and unloading procedures through an unfolding and lifting mechanism under the condition of completely relying on manual operation, improves the efficiency and quality of logistics operation, meanwhile reduces dependence on energy, and reduces the labor intensity of workers. The method conforms to the concept of sustainable development, and is beneficial to reducing the logistics cost and reducing the environmental pollution.

Description

Technical Field

[0001] The present invention relates to the field of small-scale express logistics and individual business, and in particular to a freight carriage used for lightweight logistics. Background Art

[0002] With the rapid progress of information technology and the Internet, e-commerce logistics has become the core of the industry. Faced with the normal challenges of scattered customer groups and dispersed orders, e-commerce logistics is gradually transforming to an integrated and socialized model, while actively exploring the organic integration of self-built logistics and third-party logistics. Against this background, e-commerce logistics distribution centers have shown new development trends: pursuing faster delivery response speed, giving equal importance to functional integration and marketization, and continuously improving the level of process automation, standardization and legalization.

[0003] However, traditional logistics vehicles often drive up costs when performing sorting, loading and unloading operations due to their complex mechanical structure and energy dependence. In addition, the lack of flexibility in shelf structure and cumbersome sorting operations make it difficult to improve overall efficiency.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a freight car used for lightweight logistics to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To this end, the specific technical solution adopted by the present invention is as follows: A freight car used for lightweight logistics includes a fixed cargo box arranged on the top of a transport vehicle, a shelf cover is arranged on one side of the fixed cargo box, an extension mechanism is arranged on one side of the middle part of the top of the fixed cargo box, a cargo box rotating shaft is arranged at one end of the extension mechanism, and a shelf assembly is arranged outside the cargo box rotating shaft and inside the fixed cargo box.

[0007] Furthermore, in order to realize the sliding of the extension mechanism and to cooperate with the shelf assembly to ensure that the extension mechanism can reach the specified distance without derailing, the shelf assembly can be moved to one side of the fixed cargo box, which is convenient for the staff to sort the goods and realize labor-saving loading and unloading processes. A horizontal track is provided on one side of the middle part of the top of the fixed cargo box, a horizontal track limit groove is provided on one end of the inner wall of the horizontal track, and a top cover plate cooperating with the extension mechanism is provided on the top of the fixed cargo box.

[0008] Furthermore, in order to realize horizontal movement of the shelf assembly, the extension mechanism includes an extension mechanism body arranged inside the horizontal track, extension mechanism wheels are arranged at both ends of the bottom end of the extension mechanism body, a connecting frame is arranged at one end of the extension mechanism body, and an extension mechanism cover is arranged on one side of the connecting frame.

[0009] Furthermore, in order to realize the unfolding of the shelf assembly, so that it is convenient for the staff to load and unload the goods on the shelf assembly conveniently, thereby improving the efficiency of logistics sorting and transportation and improving productivity, the cargo box rotating shaft is composed of a first rotating shaft body and a second rotating shaft body, and the first rotating shaft body and the second rotating shaft body are symmetrically arranged, and the first rotating shaft body and the second rotating shaft body are both connected to the bottom end of the connecting frame; a load-bearing rod is arranged between the first rotating shaft body and the second rotating shaft body, and a plurality of load-bearing shelf wire rope holes are opened at the top of the load-bearing rod, and a load-bearing rod base located below the shelf assembly is arranged at the bottom end of the load-bearing rod.

[0010] Furthermore, in order to move the modular shelf assembly to one side of the fixed cargo box, and to be able to lower the modular shelf assembly when sorting items with the cooperation of a manual winch, so that the staff can more conveniently access the goods and perform rapid sorting, loading and unloading operations, the shelf assembly includes a structural frame arranged inside the fixed cargo box, a winch connecting plate connected to the extension mechanism cover is arranged at the top of the structural frame, a first pulley penetrating the extension mechanism cover is arranged on one side of the winch connecting plate, a second pulley is arranged at one end of the top of the structural frame and located between the first rotating shaft body and the second rotating shaft body; a winch frame is arranged at the bottom of one side of the winch connecting plate, a manual winch is arranged at the bottom of the winch frame, and a winch crank handle is arranged on one side of the manual winch; a modular shelf assembly is arranged at one end of the structural frame and located outside the cargo box rotating shaft; a steel wire rope is arranged outside the first pulley and the second pulley, and one end of the steel wire rope is connected to the top of the load-bearing rod by inserting into the inside of the steel wire rope hole of the load-bearing shelf, and the other end of the steel wire rope is connected to the manual winch.

[0011] Furthermore, in order to evenly unfold the load-bearing shelf, the first shelf, the second shelf and the third shelf by 180 degrees for storing goods, and to control the angle between the shelves to be 60 degrees, the four groups of shelves can be stored when not in use, which greatly saves the space in the carriage. The modular shelf assembly includes a plurality of load-bearing bearings arranged on the outside of the cargo box shaft and connected to the outside of the load-bearing rod, a load-bearing shelf is arranged on the outside of the load-bearing bearing, and the first shelf, the second shelf and the third shelf are arranged in sequence inside the load-bearing shelf along the direction from outside to inside, and a plurality of shelf bearings are arranged at one end of the first shelf, the second shelf and the third shelf; the inside of the first shelf, the second shelf and the third shelf A number of cargo plate rotating shafts are provided, and a foldable cargo plate is provided on the outside of the cargo plate rotating shaft, and a cargo plate load-bearing rod is provided at one end of both sides of the foldable cargo plate; the tops of the load-bearing bearings, the shelf bearings at one end of the first shelf and the shelf bearings at one end of the second shelf are provided with shelf bearing arc slide rails, and the shelf bearing arc slide rails are staggered; the load-bearing bearings, one side of the first shelf and the second shelf are provided with a shaft groove matched with the cargo plate rotating shaft; the bottom ends of the shelf bearings are provided with shelf bearing sliders matched with the shelf bearing arc slide rails, and the shelf bearing sliders are staggered, a main frame limiting groove is provided at the top of the structural frame, and the capstan frame is located inside the main frame limiting groove.

[0012] The beneficial effects of the present invention are: 1. The structure of the present invention is scientific and novel, and focuses on achieving high efficiency in the hardware of logistics vehicles. Through an unfolding and lifting mechanism, the integration of cargo sorting and transportation, and labor-saving loading and unloading processes is completed completely relying on manual labor, thereby improving the efficiency and quality of logistics operations, while reducing dependence on energy, conforming to the concept of sustainable development, and helping to reduce logistics costs and environmental pollution.

[0013] 2. By setting up a fixed cargo box, the sliding of the extension mechanism is realized, and it can cooperate with the shelf assembly to ensure that the extension mechanism can reach the specified distance without derailing, so that the shelf assembly can be moved to one side of the fixed cargo box, which is convenient for the staff to sort the goods and realize labor-saving loading and unloading processes.

[0014] 3. By setting up an extension mechanism and a cargo box rotating shaft, the horizontal movement of the shelf assembly is realized, and the shelf assembly can also be unfolded, so that the staff can conveniently load and unload the goods on the shelf assembly, thereby improving the efficiency of logistics sorting and transportation and improving productivity.

[0015] 4. By setting up a shelf assembly, the modular shelf assembly can be moved to one side of the fixed cargo box, and with the cooperation of a manual winch, the modular shelf assembly can be lowered when sorting items, so that the staff can more conveniently access the goods and perform rapid sorting, loading and unloading operations. At the same time, the modular shelf assembly can evenly expand the load-bearing shelf, the first shelf, the second shelf and the third shelf by 180 degrees, which is convenient for storing goods, and the angle between the shelves is controlled at 60 degrees. When not in use, the four groups of shelves can be stored, which greatly saves space in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a structural schematic diagram of a freight carriage applied to lightweight logistics according to an embodiment of the present invention; Figure 2 is a cross-sectional view of a freight carriage applied to lightweight logistics according to an embodiment of the present invention; Figure 3 yes Figure 2 A partial enlarged view of the middle A; Figure 4 is a schematic diagram of a structure of a fixed cargo box in a freight carriage applied to lightweight logistics according to an embodiment of the present invention; Figure 5 yes Figure 4 A partial enlarged view of point B in the middle; Figure 6 It is a three-dimensional assembly of an extension mechanism, a cargo box rotating shaft and a shelf assembly in a freight compartment used for lightweight logistics according to an embodiment of the present invention; Figure 7 yes Figure 6 A partial enlarged view of point C in the middle; Figure 8 It is a three-dimensional assembly of an extension mechanism, a cargo box rotating shaft and a shelf assembly at another angle in a freight compartment used for lightweight logistics according to an embodiment of the present invention; Fig. 9 yes Figure 8 A partial enlarged view of point D in the middle; Fig.10 It is a structural schematic diagram of an extension mechanism, a cargo box rotating shaft and a shelf assembly in a freight compartment applied to lightweight logistics according to an embodiment of the present invention; Fig.11 yes Fig.10 A partial enlarged view of point E in the middle; Fig.12 It is a structural schematic diagram of an extension mechanism, a cargo box rotating shaft and a shelf assembly in a freight compartment applied to lightweight logistics according to an embodiment of the present invention from another angle; Fig.13 yes Fig.12 A partial enlarged view of point F in the middle; Fig.14 is a structural schematic diagram of a freight carriage for lightweight logistics applied to a transport vehicle according to an embodiment of the present invention; Fig.15 It is a schematic structural diagram of a transport vehicle in a freight compartment applied to lightweight logistics according to an embodiment of the present invention.

[0018] In the figure: 1. Transport vehicle; 101. Vehicle cab; 102. Cargo box pad; 103. Vehicle frame; 104. Rear suspension; 105. Wheel; 106. Crankshaft drive; 107. Battery; 108. Universal joint; 2. Fixed cargo box; 201. Horizontal track; 202. Horizontal track limit groove; 203. Top cover; 3. Shelf skin; 4. Extension mechanism; 401. Extension mechanism body; 402. Extension mechanism wheel; 403. Connecting frame; 404. Extension mechanism cover; 5. Cargo box shaft; 501. First shaft body; 502. Second shaft body; 503. Load-bearing rod; 504. Wire rope hole for load-bearing shelf; 505. Load-bearing rod base; 6. Shelf assembly ; 601, structural frame; 6011, main frame limit groove; 602, capstan connecting plate; 603, first pulley; 604, second pulley; 605, capstan frame; 606, manual winch; 607, capstan crank handle; 608, modular shelf assembly; 6081, load-bearing bearing; 6082, load-bearing shelf; 6083, first shelf; 6084, second shelf; 6085, third shelf; 6086, shelf bearing; 60861, shelf bearing slider; 6087, cargo board shaft; 6088, retracting and releasing cargo board; 6089, cargo board load-bearing rod; 60810, shelf bearing arc slide rail; 60811, shaft groove; 609, wire rope. DETAILED DESCRIPTION

[0019] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] According to an embodiment of the present invention, a freight carriage for use in lightweight logistics is provided.

[0021] The present invention is further described with reference to the accompanying drawings and specific embodiments. Figure 1-13 As shown, a freight carriage used for lightweight logistics according to an embodiment of the present invention includes a fixed cargo box 2 arranged at the top of a transport vehicle 1, a shelf cover 3 is arranged on one side of the fixed cargo box 2, an extension mechanism 4 is arranged on one side of the middle part of the top of the fixed cargo box 2, a cargo box rotating shaft 5 is arranged at one end of the extension mechanism 4, and a shelf assembly 6 is arranged on the outside of the cargo box rotating shaft 5 and inside the fixed cargo box 2.

[0022] like Figure 14-15 As shown, the freight carriage used for lightweight logistics can be installed on a transport vehicle 1 for logistics cargo transportation, etc., and the transport vehicle 1 is composed of a vehicle cab 101, a cargo box pad 102, a frame 103, a rear suspension 104, wheels 105, a crankshaft drive 106, a battery 107, a universal joint 108 and other components.

[0023] With the help of the above-mentioned technical scheme of the present invention, the structure of the present invention is scientific and novel, and focuses on achieving high efficiency in the hardware of logistics vehicles. Through an unfolding and lifting mechanism, the integration of cargo sorting and transportation, and labor-saving loading and unloading processes are completed completely relying on manual manpower, thereby improving the efficiency and quality of logistics operations, while reducing dependence on energy, complying with the concept of sustainable development, and helping to reduce logistics costs and environmental pollution.

[0024] In one embodiment, for the above-mentioned fixed cargo box 2, a horizontal track 201 is opened on one side of the middle part of the top of the fixed cargo box 2, and a horizontal track limiting groove 202 is opened on one end of the inner wall of the horizontal track 201. A top cover plate 203 that cooperates with the extension mechanism 4 is provided at the top of the fixed cargo box 2, thereby realizing the sliding of the extension mechanism 4, and being able to cooperate with the shelf assembly 6 to jointly ensure that the extension mechanism 4 can reach the specified distance without derailing, so that the shelf assembly 6 can be moved to one side of the fixed cargo box 2, which is convenient for the staff to sort the goods and can realize labor-saving loading and unloading processes.

[0025] In addition, it should be noted that the extension mechanism 4 runs through the entire side line of the fixed cargo box 2, and a watertight line is provided at the connection between the horizontal track 201 and the structural frame 601.

[0026] In one embodiment, for the above-mentioned extension mechanism 4 and cargo box rotating shaft 5, the extension mechanism 4 includes an extension mechanism body 401 arranged inside the horizontal track 201, and both ends of the bottom end of the extension mechanism body 401 are provided with extension mechanism wheels 402, one end of the extension mechanism body 401 is provided with a connecting frame 403, and one side of the connecting frame 403 is provided with an extension mechanism cover 404; the cargo box rotating shaft 5 is composed of a first rotating shaft body 501 and a second rotating shaft body 502, and the first rotating shaft body 501 and the second rotating shaft body 502 are symmetrically arranged, and the first rotating shaft body 501 and the second rotating shaft body 502 are symmetrically arranged. 502 are connected to the bottom end of the connecting frame 403; a load-bearing rod 503 is arranged between the first rotating shaft body 501 and the second rotating shaft body 502, and a plurality of load-bearing shelf wire rope holes 504 are opened at the top of the load-bearing rod 503, and a load-bearing rod base 505 located below the shelf assembly 6 is arranged at the bottom end of the load-bearing rod 503, thereby realizing the horizontal movement of the shelf assembly 6, and also realizing the unfolding of the shelf assembly 6, so that it is convenient for the staff to load and unload the goods on the shelf assembly 6, thereby improving the efficiency of logistics sorting and transportation and improving productivity.

[0027] In one embodiment, for the above-mentioned shelf assembly 6, the shelf assembly 6 includes a structural frame 601 arranged inside the fixed cargo box 2, a winch connecting plate 602 connected to the extension mechanism cover plate 404 is arranged at the top of the structural frame 601, a first pulley 603 penetrating the extension mechanism cover plate 404 is arranged on one side of the winch connecting plate 602, and a second pulley 604 is arranged at one end of the top of the structural frame 601 and located between the first rotating shaft body 501 and the second rotating shaft body 502; a winch frame 605 is arranged at the bottom of one side of the winch connecting plate 602, and a manual winch 606 is arranged at the bottom of the winch frame 605, and the manual winch 606 is arranged at the bottom of the winch connecting plate 602. A winch crank 607 is provided on one side of the winch 606; a modular shelf assembly 608 is provided at one end of the structural frame 601 and located on the outside of the cargo box rotating shaft 5; a steel wire rope 609 is provided on the outside of the first pulley 603 and the second pulley 604, and one end of the steel wire rope 609 is connected to the top of the load-bearing rod 503 by inserting into the inside of the load-bearing shelf steel wire rope hole 504, and the other end of the steel wire rope 609 is connected to the manual winch 606; the modular shelf assembly 608 includes a plurality of load-bearing bearings 6081 arranged on the outside of the cargo box rotating shaft 5 and connected to the outside of the load-bearing rod 503, and a load-bearing cargo bearing 6081 is provided on the outside of the load-bearing bearing A first shelf 6083, a second shelf 6084 and a third shelf 6085 are arranged inside the load-bearing shelf 6082 in a direction from outside to inside, and a plurality of shelf bearings 6086 are arranged at one end of each of the first shelf 6083, the second shelf 6084 and the third shelf 6085; a plurality of cargo plate rotating shafts 6087 are arranged inside the first shelf 6083, the second shelf 6084 and the third shelf 6085, and a retractable cargo plate 6088 is arranged outside the cargo plate rotating shaft 6087, and a cargo plate load-bearing rod 6089 is arranged at one end of both sides of the retractable cargo plate 6088; a load-bearing bearing The tops of the shelf bearings 6081, 6086 at one end of the first shelf 6083 and the shelf bearings 6086 at one end of the second shelf 6084 are provided with shelf bearing arc-shaped slide rails 60810, and the shelf bearing arc-shaped slide rails 60810 are staggered; the side of the load-bearing bearing 6081, the first shelf 6083 and the second shelf 6084 are provided with shaft grooves 60811 matched with the cargo plate shaft 6087; the bottoms of the shelf bearings 6086 are provided with shelf bearing sliders 60861 matched with the shelf bearing arc-shaped slide rails 60810, and the shelf bearing sliders 60861 are staggered;The top of the structural frame 601 is provided with a main frame limit groove 6011, and the winch frame 605 is located inside the main frame limit groove 6011, so that the modular shelf assembly 608 can be moved to one side of the fixed cargo box 2, and the modular shelf assembly 608 can be lowered when sorting items with the cooperation of the manual winch 606, so that the staff can more conveniently access the goods and perform rapid sorting, loading and unloading operations. At the same time, the modular shelf assembly 608 can evenly expand the load-bearing shelf 6082, the first shelf 6083, the second shelf 6084 and the third shelf 6085 by 180 degrees, which is convenient for storing goods, and the angle between the shelves is controlled at 60 degrees. When not in use, the four sets of shelves can be stored, which greatly saves space in the carriage. ;

[0028] In addition, it should be noted that the combination of the recovered states of the four groups of shelves is different from the wrapped structure of the shelf outer frame. The spacing between the bearings 6086 of each group of shelves is equal to ensure the consistency of their respective strengths. The load-bearing bearing 6081 at one end of the load-bearing shelf 6082 is at the bottom of the three groups of shelf bearings 6086. Therefore, the load-bearing shelf 6082 is used as a fixed shelf. In order to evenly expand the four groups of shelves by 180 degrees, the fully expanded angle of each group is controlled at 60 degrees.

[0029] The load-bearing and retracting mechanism of the load-bearing shelf 6082 is designed in such a way that the first pulley 603 and the second pulley 604 are respectively located above the manual winch 606 and the cargo box shaft 5 and fixed inside the extension mechanism 4, and the manual winch 606 is directly fixed to the extension mechanism 4 through the winch frame 605 and the winch connecting plate 602, so the winch as a whole moves synchronously with the extension mechanism 4. Since the cargo box shaft 5 always fixes the load-bearing shelf 6082 to the head of the extension mechanism 4, the load-bearing shelf 6082 is The wire rope hole 504 is always located below the second pulley 604. This design greatly reduces the useless work of the manual winch 606. Combined with the steel frame and cargo capacity, the load of the manual winch 606 can be controlled within 2500 pounds to 3000 pounds, which can be completely achieved by manual operation. In the angle fixation of the load-bearing shelf 6082, the cargo box shaft 5 is divided into left and right parts and inserted into the semicircular positioning holes of the load-bearing shelf of the three groups of shelf bearings 6086 located on the load-bearing shelf 6082 to achieve self-locking cooperation.

[0030] The working principle of the shelf assembly 6 is as follows: when it is needed, the structural frame 601 can be manually pulled out of the fixed cargo box 2 for a distance. Since the winch frame 605 is located inside the main frame limit groove 6011, the pulling distance of the structural frame 601 is limited. Then, by turning the winch crank 607, the manual winch 606 can loosen the wire rope 609. With the cooperation of the first pulley 603 and the second pulley 604, the wire rope 609 moves toward the direction of the connecting frame 403. Then, the load-bearing rod 503 can be lowered between the first rotating shaft body 501 and the second rotating shaft body 502, thereby driving the load-bearing bearing 6081 connected to the load-bearing rod 503 to descend. Then, the first shelf 6083, the second shelf 6084 and the third shelf 6085 will descend together with the shelf bearing 6086 due to the action of gravity. Then, one end of the third shelf 6085 can be pulled, so that the third shelf 6085 can be lowered. The shelf 6085 rotates around the cargo box shaft 5, and with the cooperation of the shelf bearing slider 60861 and the shelf bearing arc slide rail 60810, when the third shelf 6085 rotates sixty degrees, it will drive the second shelf 6084 to continue to rotate around the cargo box shaft 5, and then by analogy, when the second shelf 6084 rotates sixty degrees, it will drive the first shelf 6083 to continue to rotate around the cargo box shaft 5, so that the load-bearing shelf 6082, the first shelf 6083, the second shelf 6084 and the third shelf 6085 can be evenly expanded, and the load-bearing shelf 6082 and the third shelf 6085 are 180 degrees apart; at the same time, since the cargo plate load-bearing rod 6089 is foldable, the retractable cargo plate 6088 can be folded and stored when not in use; and the setting of the shaft groove 60811 can ensure that the outer cargo plate shaft 6087 is aligned without conflict.

[0031] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0032] In actual application, the staff can drag the shelf assembly 6, and then the extension mechanism 4 can carry the shelf assembly 6 to extend a certain distance out of the fixed cargo box 2, and then the shelf assembly 6 can be rotated and unfolded with the cargo box rotation axis 5 as the axis. The shelf assembly 6 can be lowered to a near-ground position along the cargo box rotation axis 5 under the control of the manual winch 606. Similarly, when it is necessary to load the items in the cargo box, the above steps can be performed in reverse.

[0033] In summary, with the help of the above technical solutions of the present invention, the present invention has a scientific and novel structure, and strives to achieve high efficiency in the hardware of logistics vehicles. Through a deployment and lifting mechanism, the integration of cargo sorting and transportation, labor-saving loading and unloading processes is completed under the condition of relying entirely on manual labor, which improves the efficiency and quality of logistics operations, reduces the dependence on energy, conforms to the concept of sustainable development, and helps to reduce logistics costs and environmental pollution. By setting a fixed cargo box 2, the sliding of the extension mechanism 4 is realized, and it can cooperate with the shelf assembly 6 to jointly ensure that the extension mechanism 4 can reach the specified distance without derailing, so that the shelf assembly 6 can be moved to one side of the fixed cargo box 2, which is convenient for the staff to sort the goods and realize the labor-saving loading and unloading process. By setting the extension mechanism 4 and the cargo box rotating shaft 5, the horizontal movement of the shelf assembly 6 is realized, and the deployment of the shelf assembly 6 can also be realized, so that it is convenient for the staff to load and unload the goods on the shelf assembly 6 in a convenient way, thereby providing the efficiency of logistics sorting and transportation and improving productivity. By setting up the shelf assembly 6, the modular shelf assembly 608 can be moved to one side of the fixed cargo box 2, and with the cooperation of the manual winch 606, the modular shelf assembly 608 can be lowered when sorting items, so that the staff can more conveniently access the goods and perform rapid sorting, loading and unloading operations. At the same time, the modular shelf assembly 608 can evenly expand the load-bearing shelf 6082, the first shelf 6083, the second shelf 6084 and the third shelf 6085 by 180 degrees, which is convenient for storing goods, and the angle between the shelves is controlled at 60 degrees. When not in use, the four groups of shelves can be stored, which greatly saves space in the car.

[0034] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A freight carriage used for lightweight logistics, characterized in that: The invention comprises a fixed cargo box (2) arranged at the top of a transport vehicle (1), a shelf cover (3) being arranged on one side of the fixed cargo box (2), an extension mechanism (4) being arranged on one side of the middle part of the top of the fixed cargo box (2), a cargo box rotating shaft (5) being arranged at one end of the extension mechanism (4), and a shelf assembly (6) being arranged outside the cargo box rotating shaft (5) and inside the fixed cargo box (2).

2. A freight carriage for lightweight logistics according to claim 1, characterized in that: A horizontal track (201) is provided on one side of the middle portion of the top of the fixed cargo box (2), a horizontal track limiting groove (202) is provided on one end of the inner wall of the horizontal track (201), and a top cover plate (203) matching with the extension mechanism (4) is provided on the top of the fixed cargo box (2).

3. A freight carriage for lightweight logistics according to claim 2, characterized in that: The extension mechanism (4) comprises an extension mechanism body (401) arranged inside the horizontal track (201), extension mechanism wheels (402) are arranged at both ends of the bottom of the extension mechanism body (401), a connecting frame (403) is arranged at one end of the extension mechanism body (401), and an extension mechanism cover plate (404) is arranged at one side of the connecting frame (403).

4. A freight carriage for lightweight logistics according to claim 3, characterized in that: The cargo box rotating shaft (5) is composed of a first rotating shaft body (501) and a second rotating shaft body (502), and the first rotating shaft body (501) and the second rotating shaft body (502) are symmetrically arranged, and the first rotating shaft body (501) and the second rotating shaft body (502) are both connected to the bottom end of the connecting frame (403); A load-bearing rod (503) is arranged between the first rotating shaft body (501) and the second rotating shaft body (502); a plurality of load-bearing shelf wire rope holes (504) are provided at the top end of the load-bearing rod (503); and a load-bearing rod base (505) located below the shelf assembly (6) is provided at the bottom end of the load-bearing rod (503).

5. A freight carriage for lightweight logistics according to claim 4, characterized in that: The shelf assembly (6) comprises a structural frame (601) arranged inside the fixed cargo box (2); a winch connecting plate (602) connected to the extension mechanism cover plate (404) is arranged at the top of the structural frame (601); a first pulley (603) penetrating the extension mechanism cover plate (404) is arranged on one side of the winch connecting plate (602); and a second pulley (604) is arranged at one end of the top of the structural frame (601) and located between the first rotating shaft body (501) and the second rotating shaft body (502); A capstan frame (605) is provided at the bottom of one side of the capstan connecting plate (602), a manual capstan (606) is provided at the bottom end of the capstan frame (605), and a capstan crank handle (607) is provided at one side of the manual capstan (606); A modular shelf assembly (608) is provided at one end of the structural frame (601) and located outside the cargo box rotating shaft (5).

6. A freight carriage for lightweight logistics according to claim 5, characterized in that: A steel wire rope (609) is arranged on the outer side of the first pulley (603) and the second pulley (604), and one end of the steel wire rope (609) is connected to the top of the load-bearing rod (503) by being inserted into the steel wire rope hole (504) of the load-bearing shelf, and the other end of the steel wire rope (609) is connected to the manual winch (606).

7. A freight carriage for lightweight logistics according to claim 5, characterized in that: The combined shelf assembly (608) comprises a plurality of load-bearing bearings (6081) arranged on the outside of the cargo box rotating shaft (5) and connected to the outside of the load-bearing rod (503); a load-bearing shelf (6082) is arranged on the outside of the load-bearing bearing (6081); a first shelf (6083), a second shelf (6084) and a third shelf (6085) are arranged in sequence from the outside to the inside of the load-bearing shelf (6082); and a plurality of shelf bearings (6086) are arranged at one end of each of the first shelf (6083), the second shelf (6084) and the third shelf (6085); A plurality of cargo plate rotating shafts (6087) are arranged inside the first shelf (6083), the second shelf (6084) and the third shelf (6085), and a retractable cargo plate (6088) is arranged on the outer side of the cargo plate rotating shaft (6087), and a cargo plate bearing rod (6089) is arranged at one end of both sides of the retractable cargo plate (6088).

8. A freight carriage for lightweight logistics according to claim 7, characterized in that: The tops of the load-bearing bearing (6081), the shelf bearing (6086) at one end of the first shelf (6083), and the shelf bearing (6086) at one end of the second shelf (6084) are all provided with shelf bearing arc-shaped slide rails (60810), and the shelf bearing arc-shaped slide rails (60810) are staggered; One side of the load-bearing bearing (6081), the first shelf (6083) and the second shelf (6084) is provided with a rotating shaft groove (60811) that matches the rotating shaft (6087) of the cargo plate.

9. A freight carriage for lightweight logistics according to claim 8, characterized in that: The bottom ends of the shelf bearings (6086) are each provided with a shelf bearing slider (60861) that matches the shelf bearing arc-shaped slide rail (60810), and the shelf bearing sliders (60861) are staggered with each other.

10. A freight carriage for lightweight logistics according to claim 8, characterized in that: A main frame limiting groove (6011) is provided at the top of the structural frame (601), and the capstan frame (605) is located inside the main frame limiting groove (6011).

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