A truck suspended carriage

Abstract

This invention discloses a suspended cargo box for a truck, mounted on a truck frame with a mechanical boom. The box includes a body with a fixed connector detachably connected to the frame at the bottom and a lifting component detachably connected to the mechanical boom at the top. The body comprises a frame and an insulation layer embedded within the frame to form an insulation zone within the frame. A rigid partition is provided outside the insulation layer. The frame includes a top frame and a bottom frame, and several columns connecting the top and bottom frames. The columns are arranged parallel to each other and detachably connected to the top and bottom frames at their two ends, respectively. The invention also includes a refrigeration module with an air outlet, an air inlet, and a heat exchange air outlet. The refrigeration module is mounted on the top or bottom frame, with the air outlet and inlet communicating with the insulation zone, and the heat exchange air outlet facing outwards from the body. When the refrigeration module is mounted on the top frame, the lifting component is mounted on the refrigeration module; when the refrigeration module is mounted on the bottom frame, the fixed connector is mounted on the refrigeration module.

Description

Technical Field

[0001] This invention belongs to the field of cargo box structure technology, specifically relating to a suspended cargo box for freight cars. Background Technology

[0002] Modern trucks are used to transport heavy goods, and loading and unloading are done by external cranes. The load on the truck only moves vertically, so the truck itself only needs to consider load-bearing capacity. However, with technological advancements, to improve convenience and multi-functionality, trucks with automated loading and unloading systems have begun to be used. By incorporating specialized lifting structures into the existing truck structure, the truck can load and unload goods itself and transport them to their destination, thereby reducing operating costs.

[0003] Trucks equipped with mechanical cranes need to frequently remove or load cargo boxes, so the cargo box itself needs to have good detachable connection characteristics and suspension stability, so that it can be easily grabbed, connected and lifted, and can form a limiting connection with the frame itself when lowered. Therefore, the top and bottom of the cargo box have corresponding connectors to connect with the corresponding structures.

[0004] Conventional suspended cargo boxes, similar to existing container structures, possess universal structural features, can be stacked, and offer high lifting stability. However, to ensure this stability, these container structures typically have a significant weight. The aforementioned trucks with mechanical cranes do not inherently possess high load-bearing capacity, especially the cargo box structure itself. To be lifted by a relatively small-capacity mechanical crane, the weight requirement is substantial, which container structures cannot meet. Furthermore, these trucks are frequently used in urban logistics, particularly for fresh produce and other goods requiring timely delivery and good insulation. Using existing container structures not only results in a significant weight impacting load capacity but also prevents the installation of heavier refrigeration components, necessitating a redesign of the internal insulation structure. Especially for cargo boxes requiring lifting, the current technology lacks technical support for arranging refrigeration components and maintaining a stable center of gravity during lifting. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a suspended cargo box for trucks. Through a novel structural design, it can meet the requirements of stable hoisting of the basic structure and detachable connection with the chassis. Furthermore, by optimizing the connection method between the detachable intelligent modules and the box body, it maintains its suspension stability and thermal insulation properties while having a relatively low self-weight.

[0006] The technical solution adopted in this invention is as follows:

[0007] In a first aspect, the present invention discloses a truck suspended cargo box, which is mounted on a truck frame with a mechanical boom and has a box body. One side of the box body has an opening and a door is movably connected to the opening. The bottom of the box body has a fixed connector that is detachably connected to the frame, and the top has a lifting component that is detachably connected to the mechanical boom. The box body includes a frame and an insulation layer embedded in the frame to enclose an insulation zone within the frame. A rigid partition is provided outside the insulation layer.

[0008] The frame includes a top frame and a bottom frame, as well as several columns connecting the top frame and the bottom frame. The columns are arranged in parallel and are detachably connected to the top frame and the bottom frame through two ends respectively.

[0009] It also includes a refrigeration module, which has an air outlet, an air inlet and a heat exchange air outlet. The refrigeration module is set on the top frame or the bottom frame and the air outlet and air inlet are connected to the insulation area. The heat exchange air outlet faces the outside of the box.

[0010] When the refrigeration module is installed on the top frame, the hanging component is installed on the refrigeration module;

[0011] When the refrigeration module is mounted on the bottom frame, the fixing connector is mounted on the refrigeration module.

[0012] In conjunction with the first aspect, the present invention provides a first embodiment of the first aspect, wherein the insulation layer provided on the top frame and the bottom frame is provided with an opening, the opening being used to connect the air inlet and air outlet of the refrigeration module to guide air.

[0013] The openings not connected to the refrigeration module are sealed with insulation blocks.

[0014] In conjunction with the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the top frame and the bottom frame are each provided with a slot for the end of the column to pass through and be nested and connected, and one end of the column is inserted into the slot of the top frame or the bottom frame and fixed by bolts to form a detachable connection.

[0015] In conjunction with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the slot is a through-channel structure with at least two openings, one opening for accommodating the insertion of the end of the column, and the other opening for accommodating the insertion of the protrusion of the housing of the refrigeration module. The protrusion and the end of the column are inserted into the same slot and form a nested connection in the slot, and are simultaneously fixed through the same bolt provided externally.

[0016] In conjunction with the second embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the housing of the refrigeration module includes a ring frame and a rigid partition disposed on the surface of the ring frame, the rigid partition surrounds the ring frame to form a receiving cavity, the receiving cavity has a refrigeration assembly consisting of a compressor, a piping system and an evaporator, the rigid partition on the refrigeration module is provided with an air inlet and an air outlet corresponding to the piping system, and a heat exchange air outlet corresponding to the evaporator;

[0017] When the refrigeration module is installed on the top or bottom frame, it is connected to the opening on the top or bottom frame through the provided insulated pipe.

[0018] In conjunction with the second embodiment of the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein the top frame includes two parallel top beams and a top frame for connecting the two top beams. The top frame is an integral crossbeam structure, which is set at the middle position of the two top beams and surrounds the top beams to form an I-shaped structure. The top frame has a sinkhole for installing hanging parts.

[0019] Two slots are symmetrically provided on each single top beam for connecting and fixing two columns;

[0020] The upper edge of the opening where the compartment door is located is one of the top beams;

[0021] The insulation layer at the top frame is set inside the top frame and covers the hollow area of ​​the top frame. The rigid partition outside the top frame consists of two independent parts, which respectively cover the exposed insulation layer surfaces on both sides of the top frame.

[0022] In conjunction with the second embodiment of the first aspect, the present invention provides a sixth embodiment of the first aspect, wherein the bottom frame includes two parallel bottom beams and a base frame for connecting the two bottom beams. The base frame is composed of two parallel crossbars, and the base frame and the bottom beams together form a grid-like structure. A fixed connector is provided on each crossbar.

[0023] Two slots are symmetrically provided on a single bottom beam for connecting and fixing two columns;

[0024] The lower edge of the opening where the compartment door is located is one of the bottom beams;

[0025] The insulation layer at the bottom frame is set inside the base frame and covers the hollow area of ​​the bottom frame. The rigid partition of the bottom frame is a one-piece plate that covers the outer surface of the base frame and has an opening at the location of the fixing connector to expose the fixing connector.

[0026] In conjunction with the second embodiment of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein the lifting member is two parallel rods, and the gripping end of the mechanical boom extends into the space between the two rods for rotational locking and limiting.

[0027] The fixed connector is a locking groove, and the frame has a protruding locking block. The locking groove and the locking block are engaged to achieve the limiting position.

[0028] In conjunction with the second embodiment of the first aspect, the present invention provides an eighth embodiment of the first aspect, wherein a reinforcing frame fixedly connected to an adjacent column is provided on the vertical side of the box body, and the reinforcing frame is located inside the insulation layer on that side.

[0029] The beneficial effects of this invention are as follows:

[0030] (1) The present invention combines a frame structure, insulation layer and rigid partition to ensure structural stability and suspension stability while minimizing its weight and improving its insulation effect, and at the same time the cost is lower than that of ordinary partition-type cargo boxes.

[0031] (2) By optimizing the assembly and connection method of the column, the bottom frame and the top frame, the present invention can be used independently and has a certain heat preservation effect when an active refrigeration module is not needed. At the same time, a refrigeration module can be provided at the bottom or top of the box as needed, so as to keep the center of gravity of the entire box in the middle, and without affecting the hoisting and detachable connection requirements with the frame, the active temperature control of the heat preservation area in the box can be achieved, thereby ensuring that the loaded materials can have stable temperature preservation conditions over a certain transportation distance. Attached Figure Description

[0032] Figure 1 This is a front view of the entire carriage mounted on the truck beam in an embodiment of the present invention;

[0033] Figure 2 This is a top view of the entire carriage mounted on the truck beam in an embodiment of the present invention;

[0034] Figure 3 This is a side view of the entire carriage mounted on the truck beam in an embodiment of the present invention;

[0035] Figure 4 This is an isometric view of the entire carriage mounted on the main beam of the freight car in an embodiment of the present invention;

[0036] Figure 5 This is a first exploded schematic diagram of a single carriage structure in an embodiment of the present invention;

[0037] Figure 6 This is a second exploded view of the individual carriage structure in an embodiment of the present invention.

[0038] In the diagram: 1-Top beam, 2-Door, 3-Bottom beam, 4-Column, 5-Top frame, 6-Settling trough, 7-Rigid partition, 8-Main beam, 9-Insulation layer, 10-Reinforcing frame, 11-Bottom frame. Detailed Implementation

[0039] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0045] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] Example 1:

[0047] This embodiment discloses a suspended cargo box for a freight truck. The cargo box is mounted on a freight truck frame equipped with a mechanical boom. The frame itself includes two parallel main beams 8, and the cargo box is mounted on the main beams 8. It is used for short-distance transportation of materials, including various types of materials. This embodiment mainly targets the transportation of materials with low-temperature transportation requirements, such as fresh food.

[0048] Specifically, the carriage has a box-shaped structure with an opening on its vertical side and a door 2 movably connected to the opening. While carriages typically have two doors 2 (front and rear), the carriage in this embodiment is smaller, so to ensure structural stability, only one door 2 is provided. The door 2 itself is made of lightweight polymer organic material or lightweight alloy hollow sheet.

[0049] The bottom of the box has a fixed connector that can be detachably connected to the frame, and the top has a lifting component that can be detachably connected to the mechanical boom. The box includes a frame and an insulation layer 9 embedded in the frame to enclose the insulation zone inside the frame. The insulation layer 9 is provided with a rigid partition 7 on the outside. The frame includes a top frame and a bottom frame, as well as several columns 4 connecting the top frame and the bottom frame. The columns 4 are arranged in parallel and are detachably connected to the top frame and the bottom frame through two ends respectively.

[0050] The carriage also includes a detachable refrigeration module, which has an air outlet, an air inlet, and a heat exchange air outlet. The refrigeration module is installed on the top or bottom frame, and the air outlet and air inlet are connected to the insulation area. The heat exchange air outlet faces the outside of the carriage.

[0051] The refrigeration module is an independent structure that can be installed on the top or bottom frame, depending on the requirements. When installed on the top frame, it does not significantly affect the suspension; therefore, the suspension components are mounted on the refrigeration module. When the refrigeration module is installed on the bottom frame, to avoid affecting the overall stability of the vehicle body, the fixing connectors are mounted on the refrigeration module. Additionally, the bottom-mounted refrigeration module requires high structural strength, and the entire refrigeration module achieves high structural stability through its built-in frame.

[0052] Reference Figures 1-5The insulation layer 9, which is set on the top frame and the bottom frame, has an opening for connecting the air inlet and air outlet of the refrigeration module; the opening not connected to the refrigeration module is covered with an insulation block for sealing.

[0053] Both the top and bottom frames are provided with slots for the ends of the uprights 4 to pass through and nest together. One end of the upright 4 is inserted into the slot of the top or bottom frame and fixed with bolts to form a detachable connection. The slot is a through-channel structure with at least two openings. One opening is used to accommodate the insertion of the end of the upright 4, and the other opening is used to accommodate the insertion of a protrusion of the housing of the refrigeration module. The protrusion and the end of the upright 4 are inserted into the same slot and form a nested connection within the slot, and are simultaneously fixed through and by the same external bolt.

[0054] Furthermore, the housing of the refrigeration module includes a ring frame and a rigid partition 7 disposed on the surface of the ring frame. The rigid partition 7 surrounds the ring frame to form a receiving cavity. The receiving cavity contains a refrigeration assembly consisting of a compressor, a piping system, and an evaporator. The rigid partition 7 on the refrigeration module is provided with an air inlet and an air outlet corresponding to the piping system, as well as a heat exchange air outlet corresponding to the evaporator. When the refrigeration module is disposed on the top frame or the bottom frame, it is connected to the opening on the top frame or the bottom frame through the provided heat-insulating pipe.

[0055] In some embodiments, the top frame includes two parallel top beams 1 and a top frame 5 for connecting the two top beams 1. The top frame 5 is an integral crossbeam structure, located in the middle of the two top beams 1 and forming an I-shaped structure with the top beams 1. The top frame 5 has a recess 6 for installing hanging parts. Two slots are symmetrically provided on each top beam 1 for connecting and fixing two columns 4. The upper edge of the opening where the door 2 is located is one of the top beams 1. The insulation layer 9 at the top frame is located inside the top frame 5 and covers the hollow area of ​​the top frame. The rigid partition 7 outside the top frame includes two independent parts, which respectively cover the exposed insulation layer 9 surfaces on both sides of the top frame 5.

[0056] It should be noted that the top frame 5 itself is a plate or steel frame structure used to connect the two top beams 1, providing a good connection and stability for the top beams 1. At the same time, since the top frame 5 itself serves as a hoisting structure, it needs to be connected to an external mechanical crane arm and support the entire carriage; therefore, it refers to... Figure 6 The larger frame structure has a recessed groove 6 on the top surface for mounting the lifting components.

[0057] If a top-mounted cooling module is used, the top frame 5 will be removed. First, the four columns 4 will be connected using the cooling module. Then, the top frame 5 will be placed inside or on top of the cooling module, thus preventing the cooling module from obstructing the connection between the top frame 5 and the mechanical boom. The top frame 5 itself is fixedly connected to the top beam 1 with bolts, facilitating disassembly.

[0058] In some embodiments, the bottom frame includes two parallel bottom beams 3 and a base frame 11 for connecting the two bottom beams 3. The base frame 11 is composed of two parallel crossbars. The base frame 11 and the bottom beams 3 together form a grid structure. A fixing connector is provided on each crossbar. Two slots are symmetrically provided on each bottom beam 3 for connecting and fixing two columns 4. The lower edge of the opening where the door 2 is located is one of the bottom beams 3. The insulation layer 9 at the bottom frame is set inside the base frame 11 and covers the hollow area of ​​the bottom frame. The rigid partition 7 of the bottom frame is an integral plate that covers the outer surface of the base frame 11 and has an opening where the fixing connector is provided for the fixing connector to be exposed.

[0059] In some embodiments, the lifting component consists of two parallel rods, with the gripping end of the mechanical boom extending between the two rods for rotational locking and limiting. The fixed connector is a locking groove, and the frame has a protruding locking block, which is locked by the locking groove and the locking block to achieve limiting. A reinforcing frame 10 is also provided on the vertical side of the box, which is fixedly connected to the adjacent column 4. The reinforcing frame 10 is located inside the insulation layer 9 on that side.

[0060] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A suspended cargo box for a freight car, mounted on a freight car frame with a mechanical boom, comprising a box body, an opening on one side of the box body with a door (2) movably connected to the opening; the bottom of the box body having a fixed connector detachably connected to the frame, and the top having a lifting component detachably connected to the mechanical boom, characterized in that: The enclosure includes a frame and an insulation layer (9) embedded in the frame to enclose the insulation zone inside the frame. The insulation layer (9) is provided with a rigid partition (7) on the outside. The frame includes a top frame and a bottom frame, as well as several columns (4) connecting the top frame and the bottom frame. The columns (4) are arranged in parallel and are detachably connected to the top frame and the bottom frame through two ends respectively. It also includes a refrigeration module, which has an air outlet, an air inlet and a heat exchange air outlet. The refrigeration module is set on the top frame or the bottom frame and the air outlet and air inlet are connected to the insulation area. The heat exchange air outlet faces the outside of the box. When the refrigeration module is installed on the top frame, the hanging component is installed on the refrigeration module; When the refrigeration module is mounted on the bottom frame, the fixing connector is mounted on the refrigeration module. The insulation layer (9) set on the top frame and bottom frame is provided with an opening, which is used to connect the air inlet and air outlet of the refrigeration module to guide air. The openings not connected to the refrigeration module are sealed with insulation blocks; Both the top frame and the bottom frame are provided with slots for the end of the column (4) to pass through and be nested together. One end of the column (4) is inserted into the slot of the top frame or the bottom frame and fixed with bolts to form a detachable connection. The slot is a through-channel structure with at least two openings. One opening is used to accommodate the insertion of the end of the column (4), and the other opening is used to accommodate the insertion of the protrusion of the housing of the refrigeration module. The protrusion and the end of the column (4) are inserted into the same slot and form a nested connection in the slot, and are simultaneously fixed by the same bolt provided on the outside.

2. The suspended cargo box of a freight car according to claim 1, characterized in that: The housing of the refrigeration module includes a ring frame and a rigid partition (7) disposed on the surface of the ring frame. The rigid partition (7) surrounds the ring frame to form a accommodating cavity. The accommodating cavity contains a refrigeration assembly consisting of a compressor, a piping system and an evaporator. The rigid partition (7) on the refrigeration module is provided with an air inlet and an air outlet connected to the piping system, as well as a heat exchange air outlet corresponding to the evaporator. When the refrigeration module is installed on the top or bottom frame, it is connected to the opening on the top or bottom frame through the provided insulated pipe.

3. A suspended cargo box for a freight car according to claim 1, characterized in that: The top frame includes two parallel top beams (1) and a top frame (5) for connecting the two top beams (1). The top frame (5) is an integral crossbeam structure, which is set in the middle of the two top beams (1) and forms an I-shaped structure with the top beams (1). The top frame (5) has a sinkhole for installing the hanging parts. Two slots are symmetrically provided on a single top beam (1) for connecting and fixing two columns (4); The upper edge of the opening where the compartment door (2) is located is one of the top beams (1); The insulation layer (9) at the top frame is set inside the top frame (5) and covers the hollow area of ​​the top frame. The rigid partition (7) outside the top frame includes two independent parts, which respectively cover the surface of the insulation layer (9) exposed on both sides of the top frame (5).

4. A suspended cargo box for a freight car according to claim 1, characterized in that: The bottom frame includes two parallel bottom beams (3) and a base frame (11) for connecting the two bottom beams (3). The base frame (11) is composed of two parallel horizontal bars. The base frame (11) and the bottom beams (3) together form a grid structure. A fixed connector is provided on each horizontal bar. Two slots are symmetrically provided on a single bottom beam (3) for connecting and fixing two columns (4); The lower edge of the opening where the compartment door (2) is located is one of the bottom beams (3); The insulation layer (9) at the bottom frame is set inside the base frame (11) and covers the hollow area of ​​the bottom frame. The rigid partition (7) of the bottom frame is an integral plate that covers the outer surface of the base frame (11) and has an opening at the location where the fixing connector is provided for the fixing connector to be exposed.

5. A suspended cargo box for a freight car according to claim 1, characterized in that: The lifting component consists of two parallel rods, with the gripping end of the mechanical boom extending between the two rods and rotating to engage and limit its position. The fixed connector is a locking groove, and the frame has a protruding locking block. The locking groove and the locking block are engaged to achieve the limiting position.

6. A suspended cargo box for freight cars according to claim 1, characterized in that: The box body is also provided with a reinforcing frame (10) fixedly connected to the adjacent column (4) on the vertical side. The reinforcing frame (10) is located inside the insulation layer (9) on that side.

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