Cargo compartment heating structure and mining dump truck

Abstract

The application discloses a cargo compartment heating structure, which comprises a cargo compartment bottom, a cargo compartment front flue installed at one end of the cargo compartment bottom, and a cargo compartment bottom flue installed at the bottom of the cargo compartment bottom, a flow guide cavity is formed in the cargo compartment bottom, the flow guide cavity is communicated with the cargo compartment front flue and the cargo compartment bottom flue, the cargo compartment front flue is provided with a first air inlet for receiving exhaust gas of a vehicle, the cargo compartment bottom flue is provided with an exhaust hole for discharging the exhaust gas of the vehicle, the exhaust gas enters the flow guide cavity through the first air inlet and is guided to flow into the cargo compartment bottom flue, the flow in the cargo compartment bottom flue heats the bottom of the cargo compartment bottom, and finally, the exhaust gas is discharged through the exhaust hole, so that the whole cargo compartment bottom is heated, the material is prevented from being adhered due to freezing, and the unloading smoothness and the transportation efficiency are improved. The application further discloses a mine dump truck comprising the cargo compartment heating structure.

Description

Technical Field

[0001] This utility model relates to the technical field of mining dump trucks, and in particular to a cargo box heating structure and a mining dump truck. Background Technology

[0002] Mining dump trucks are widely used in large mines for transporting earth and rock materials, and their operating environment is usually quite harsh. Especially in areas with low temperatures, such as high altitudes or high latitudes, the moisture in the materials is easily frozen due to the low temperature during transportation, and often sticks to the inner wall of the cargo box during unloading, making it impossible for the materials to be unloaded smoothly.

[0003] Over long-term use, the frozen material accumulates and gradually forms a thick layer of material inside the cargo compartment. This not only reduces unloading efficiency but also reduces the effective loading space of the cargo compartment, thereby affecting the overall transportation efficiency of the vehicle. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a cargo box heating structure and a mining dump truck, which can use the exhaust gas of the dump truck to heat the cargo box, thereby preventing the material from freezing and adhering in a low-temperature environment and ensuring the smooth unloading process.

[0005] This utility model provides a cargo box heating structure, including a cargo box floor, a front exhaust duct installed at one end of the cargo box floor, and a bottom exhaust duct installed at the bottom of the cargo box floor. A guide cavity is formed inside the cargo box floor, which connects the front exhaust duct and the bottom exhaust duct. The front exhaust duct is provided with a first air inlet for receiving vehicle exhaust gas, and the bottom exhaust duct is provided with an exhaust port for discharging vehicle exhaust gas. After the exhaust gas enters the guide cavity through the first air inlet, it is guided into the bottom exhaust duct, where it flows and heats the bottom of the cargo box floor before being discharged through the exhaust port.

[0006] In one embodiment, the front flue of the cargo compartment includes a front flue bottom plate connected to the bottom of the cargo compartment, a front flue cover plate, and two front flue side plates disposed between the front flue bottom plate and the front flue cover plate, wherein the first air inlet is disposed on the front flue cover plate.

[0007] In one embodiment, the front flue of the cargo compartment includes a front flue bottom plate, a front flue cover plate, a front flue air inlet plate, and two front flue side plates connected to the bottom of the cargo compartment. The front flue air inlet plate is located below the front flue cover plate. The front flue side plates are connected to the front flue bottom plate, the front flue cover plate, and the front flue air inlet plate. The first air inlet is disposed on the front flue air inlet plate.

[0008] In one embodiment, the bottom flue of the cargo compartment includes a bottom flue cover plate connected to the bottom of the cargo compartment and bottom flue side plates disposed on both sides of the bottom flue, wherein the bottom flue cover plate and the bottom flue side plates are welded to form a semi-enclosed box structure.

[0009] In one embodiment, the cargo compartment includes a main body, a front panel of the cargo compartment disposed at one end of the main body for installing the front flue of the cargo compartment, and a sealing plate disposed adjacent to the front panel of the cargo compartment. The sealing plate is connected to both the front panel of the cargo compartment and the main body of the cargo compartment. The flow guiding cavity is formed by the space enclosed by the sealing plate, the front panel of the cargo compartment, and the main body of the cargo compartment.

[0010] In one embodiment, the front panel of the cargo compartment has a second air inlet for connecting to the guide cavity, and the main panel of the cargo compartment has a third air inlet for connecting to the guide cavity near the front panel of the cargo compartment. The exhaust gas enters the front flue of the cargo compartment through the first air inlet, enters the guide cavity through the second air inlet, enters the bottom flue of the cargo compartment through the third air inlet, and is finally discharged through the exhaust hole.

[0011] In one embodiment, the exhaust port is located at the end of the bottom flue cover away from the third air inlet.

[0012] In one embodiment, the bottom flue of the cargo compartment is a long, hollow box structure. The bottom flue of the cargo compartment is installed at the center of the bottom of the main board of the cargo compartment, and the length of the bottom flue of the cargo compartment extends along the longitudinal axis of the main board of the cargo compartment.

[0013] In one embodiment, the bottom main board is provided with a first crossbeam and a second crossbeam for reinforcing the cargo box bottom at one end near the front panel of the bottom box, and the bottom flue side plate is provided with two clearance grooves for avoiding the first crossbeam and the second crossbeam, and the two clearance grooves are respectively provided with an arched first sealing plate and a second sealing plate.

[0014] This utility model also provides a mining dump truck, including the cargo box heating structure described in the above embodiments.

[0015] This utility model provides a cargo box heating structure. By setting a guide cavity in the cargo box floor that connects to the front and bottom flues, high-temperature exhaust gas can smoothly enter from the front flue, be guided by the guide cavity, enter the bottom flue, and finally be discharged. This structure not only ensures a continuous flow path for the exhaust gas but also utilizes the heat of the exhaust gas to focus on heating the lowest point area of ​​the cargo box, preventing freezing due to moisture accumulation in low-temperature environments, avoiding material adhesion at the bottom, and significantly improving unloading efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall structural diagram of a cargo compartment heating structure provided in a preferred embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the front flue provided in a preferred embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the cargo box floor provided in a preferred embodiment of the present utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the cargo box floor provided in a preferred embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the cargo box floor provided in a preferred embodiment of the present invention.

[0022] Figure 6 A schematic diagram of the bottom flue provided in a preferred embodiment of this utility model.

[0023] Figure 7 This is an overall structural diagram of a cargo compartment heating structure provided in a preferred embodiment of the present utility model.

[0024] Figure 8 This is a schematic diagram of the front flue provided in a preferred embodiment of the present invention.

[0025] Figure 9 A schematic diagram of the bottom flue provided in a preferred embodiment of this utility model.

[0026] Figure label: 11. Front flue of the cargo compartment; 12. Cargo compartment floor; 13. Bottom flue of the cargo compartment; 111. Front flue cover plate; 112. Front flue bottom plate; 113. Front flue side plate; 114. First air inlet; 115. Front flue air inlet plate; 121. Bottom compartment front plate; 122. First crossbeam; 123. Second crossbeam; 124. Bottom compartment main plate; 125. Guide cavity; 126. Sealing plate; 1211. Second air inlet; 1241. Third air inlet; 131. Bottom flue cover plate; 132. Bottom flue side plate; 133. First sealing plate; 134. Second sealing plate; 135. Exhaust vent. Detailed Implementation

[0027] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., 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. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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 utility model.

[0030] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0031] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0032] Figure 1 Please refer to the overall structural diagram of a cargo compartment heating structure provided in a preferred embodiment of this utility model. Figure 1 The present invention provides a cargo box heating structure for a mining dump truck, including a cargo box bottom box 12, a front flue 11 for the cargo box at one end of the cargo box bottom box 12, and a bottom flue 13 for the cargo box at the bottom of the cargo box bottom box 12. Figure 4-5 This is a schematic diagram of the internal structure of the cargo box floor provided in a preferred embodiment of the present invention, as shown below. Figure 4-5As shown, the cargo box 12 forms the bottom structure of the dump truck's cargo box, used to carry materials. A guide cavity 125 is formed inside the cargo box 12, which connects the front flue 11 of the cargo box to the bottom flue 13 of the cargo box, guiding the flow of exhaust gas. The guide cavity 125 is located at one end of the cargo box 12, at the lowest point of the cargo box of this mining dump truck (hereinafter referred to as the cargo box). This location is prone to accumulating moisture from the materials during transportation. In cold environments, the accumulated moisture is easily frozen, causing the materials to adhere to the bottom of the cargo box, affecting unloading. The front flue 11 of the cargo box has a first air inlet 114, which is connected to the dump truck's exhaust gas treatment system to receive high-temperature exhaust gas from the engine. One end of the bottom flue cover 131 has an exhaust port 135 for discharging the vehicle's exhaust gas. After the exhaust gas enters the guide cavity 125 through the first air inlet 114, it first heats the lowest point area, and then is guided into the bottom flue 13 of the cargo box. Flowing along the bottom flue 13, it heats the entire bottom of the cargo box 12, and finally exits through the exhaust port 135. During the flow of the exhaust gas at the bottom of the cargo box 12, the bottom metal plate of the cargo box 12 can fully absorb the heat carried by the exhaust gas, raising the surface temperature of the bottom of the cargo box 12, thereby heating the material carried inside the cargo box. This heating process effectively prevents the material from freezing and adhering to the surface of the bottom plate 124 due to low temperatures, ensuring a smooth unloading process.

[0033] Figure 2 A schematic diagram of the front flue provided for a preferred embodiment of this utility model is shown below. Figure 2 As shown, the front flue 11 of the cargo box includes a front flue bottom plate 112, one end of which is connected to the front end of the cargo box floor 12. A front flue cover plate 111 is fixed at the end of the front flue bottom plate 112 away from the cargo box floor 12. Two front flue side plates 113 are arranged between the front flue bottom plate 112 and the front flue cover plate 111. The front flue bottom plate 112, the front flue cover plate 111, and the two front flue side plates 113 together form a flue gas passage. A first air inlet 114 is opened on the front flue cover plate 111 to receive the exhaust gas emitted by the engine and guide it into the flue passage.

[0034] Specifically, the front flue cover 111 protrudes away from the cargo box floor 12, so that the front flue cover 111, the front flue floor 112, and the front flue side plate 113 enclose a box structure with a certain volume. After the exhaust gas enters the box structure, it can fully diffuse and form a certain buffer space to avoid the exhaust gas directly impacting the floor plate at high speed, and ensure that the exhaust gas has a more uniform and stable flow state before entering the cargo box floor 12.

[0035] Figure 7This is an overall structural diagram of a cargo compartment heating structure provided in a preferred embodiment of the present invention. Figure 8 A schematic diagram of the front flue provided for a preferred embodiment of this utility model is shown below. Figure 7-8 As shown, in this embodiment, the front flue 11 of the cargo compartment includes a front flue bottom plate 112, a front flue cover plate 111, a front flue air inlet plate 115, and two front flue side plates 113 connected to the cargo compartment floor 12. The front flue air inlet plate 115 is located below the front flue cover plate 111. The front flue side plates 113 are connected to the front flue bottom plate 112, the front flue cover plate 111, and the front flue air inlet plate 115. A first air inlet 114 is disposed on the front flue air inlet plate 115. After the exhaust gas enters the front flue through the first air inlet 114, it first flows along the inclined direction of the front flue air inlet plate 115, and then changes its flow direction at the bend of the front flue cover plate 111, so that the exhaust gas is guided from the bottom end of the front flue bottom plate 112 into the interior of the cargo compartment floor 12. This structure allows the exhaust gas to be fully guided in direction before entering the cargo box 12, achieving uniform distribution of the exhaust gas within the box and avoiding uneven heating caused by concentrated exhaust gas impacting a certain area. It also provides better sealing.

[0036] Figure 6 A schematic diagram of the bottom flue structure provided for a preferred embodiment of this utility model is shown below. Figure 6 As shown, the bottom flue 13 of the cargo compartment includes a bottom flue cover plate 131 and bottom flue side plates 132 disposed on both sides of the bottom flue. The bottom flue cover plate 131 and the bottom flue side plates 132 are welded to form a semi-enclosed box structure. Exhaust gas is introduced into the bottom compartment 12 of the cargo compartment from the front flue 11 and then flows into the bottom flue 13 of the cargo compartment, forming a uniform flow path along the bottom flue 13. The exhaust gas is transferred from the bottom of the cargo compartment to the rear of the cargo compartment through the bottom flue 13 and finally discharged from the exhaust port 135. This structure enables the exhaust gas to maintain a stable flow direction, while reducing heat loss and preventing the exhaust gas from dissipating or flowing back in the bottom flue, thereby achieving uniform heating of the bottom of the cargo compartment, improving heating efficiency, and ensuring the uniformity of the overall temperature distribution of the cargo compartment.

[0037] Figure 9 A schematic diagram of the bottom flue structure provided for a preferred embodiment of this utility model is shown below. Figure 7-9As shown, in this embodiment, the bottom flue 13 of the cargo box is a long, hollow box structure. The bottom flue 13 is installed at the center of the bottom of the main body 124 of the cargo box, and the length of the bottom flue 13 extends along the longitudinal axis of the main body 124 of the cargo box. The bottom flue cover plate 131 is bent towards the main body 124 of the cargo box at one end near the front plate 121 of the cargo box. Through this bending structure, the bottom flue cover plate 131 ensures smooth flow of exhaust gas while allowing the exhaust gas passage to avoid heat-sensitive components (such as hydraulic hoses or electrical lines) between the bottom of the cargo box and the body of the dump truck, thereby avoiding thermal damage to these components.

[0038] Figure 3 This is a structural schematic diagram of the cargo box 12 provided in a preferred embodiment of the present invention, as shown below. Figure 3 As shown, the cargo compartment floor 12 includes a main floor panel 124, a front panel 121 for installing the front flue 11 of the cargo compartment, located at one end of the main floor panel 124, and a sealing plate 126 adjacent to the front panel 121. One end of the sealing plate 126 is connected to both the front panel 121 and the main floor panel 124. The flow guide cavity 125 is formed by the space enclosed by the sealing plate 126, the front panel 121, and the main floor panel 124. The main floor panel 124 has a third air inlet 1241 for connecting the bottom flue 13 of the cargo compartment and the flow guide cavity 125. The front panel 121 has a second air inlet 1211 for connecting the front flue 11 of the cargo compartment and the flow guide cavity 125. Exhaust gas enters the front of the cargo compartment through the front flue 11, enters the bottom compartment 12 of the cargo compartment through the second air inlet 1211 opened on the front panel 121, and then enters the bottom flue 13 of the cargo compartment through the third air inlet 1241 opened on the main panel 124 of the bottom compartment, and flows evenly along the bottom of the cargo compartment.

[0039] Specifically, the third air inlet 1241 is located at one end of the main board 124 of the cargo compartment near the front panel 121. This allows exhaust gas, after entering the cargo compartment 12 from the front flue through the second air inlet 1211, to directly enter the bottom flue through the third air inlet 1241 at the front of the bottom panel. As the exhaust gas enters the bottom flue, it is evenly distributed along the bottom of the cargo compartment and flows towards the rear, forming a continuous and stable flow path. This prevents the exhaust gas from stagnating or flowing back within the cargo compartment, thus ensuring uniform heating of the cargo compartment bottom. Simultaneously, the placement of the third air inlet 1241 near the front panel 121 shortens the exhaust gas transfer distance, improves heat utilization efficiency, reduces energy loss, and makes the overall heating of the cargo compartment faster and more uniform.

[0040] Optionally, a first crossbeam 122 and a second crossbeam 123 are welded to one end of the main body 124 near the front panel 121 of the cargo box. This is used to strengthen the rigidity of the cargo box structure 12, improve the overall load-bearing capacity of the cargo box, and prevent excessive deformation of the floor during transportation or loading. At the same time, two clearance grooves (not shown) are provided on the bottom flue side panel 132 to avoid the first crossbeam 122 and the second crossbeam 123, so that the flue structure and the load-bearing reinforcement structure do not interfere with each other, and maintain the complete flow path of the bottom flue.

[0041] Specifically, arched first sealing plates 133 and second sealing plates 134 are respectively installed in the two clearance slots. These arched sealing plates extend along the width of the bottom flue to smoothly guide the flow of exhaust gas. After the exhaust gas enters the bottom flue from the third air inlet 1241, it flows along the bottom of the cargo box and is guided by the first sealing plates 133 and second sealing plates 134, so that the airflow is evenly distributed along the bottom of the flue and avoids airflow stagnation or backflow in the area near the first crossbeam 122 and the second crossbeam 123.

[0042] The arched sealing plate optimizes airflow channels, reducing flow resistance within the bottom flue and improving heat transfer efficiency of exhaust gases. Simultaneously, uniform exhaust gas flow ensures consistent temperature distribution at the bottom of the cargo compartment, enhancing heating performance and preventing localized overheating or excessive temperature differences.

[0043] This utility model embodiment also provides a mining dump truck, including the cargo box heating structure described in the above embodiment.

[0044] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A cargo compartment heating structure, characterized in that, The system includes a cargo box bottom compartment (12), a cargo box front flue (11) installed at one end of the cargo box bottom compartment (12), and a cargo box bottom flue (13) installed at the bottom of the cargo box bottom compartment (12). A guide cavity (125) is formed inside the cargo box bottom compartment (12). The guide cavity (125) connects the cargo box front flue (11) and the cargo box bottom flue (13). The cargo box front flue (11) is provided with a first air inlet (114) for receiving vehicle exhaust gas. The cargo box bottom flue (13) is provided with an exhaust port (135) for discharging vehicle exhaust gas. After the exhaust gas enters the guide cavity (125) through the first air inlet (114), it is guided into the cargo box bottom flue (13). The exhaust gas flows in the cargo box bottom flue (13) and heats the bottom of the cargo box bottom compartment (12). Finally, it is discharged through the exhaust port (135).

2. The cargo compartment heating structure as described in claim 1, characterized in that, The front flue (11) of the cargo compartment includes a front flue bottom plate (112) connected to the cargo compartment bottom plate (12), a front flue cover plate (111), and two front flue side plates (113) disposed between the front flue bottom plate (112) and the front flue cover plate (111). The first air inlet (114) is disposed on the front flue cover plate (111).

3. The cargo compartment heating structure as described in claim 1, characterized in that, The front flue (11) of the cargo compartment includes a front flue bottom plate (112), a front flue cover plate (111), a front flue air inlet plate (115), and two front flue side plates (113) connected to the cargo compartment bottom plate (12). The front flue air inlet plate (115) is located below the front flue cover plate (111). The front flue side plates (113) are connected to the front flue bottom plate (112), the front flue cover plate (111), and the front flue air inlet plate (115). The first air inlet (114) is located on the front flue air inlet plate (115).

4. The cargo compartment heating structure as described in claim 1, characterized in that, The bottom flue (13) of the cargo compartment includes a bottom flue cover plate (131) connected to the bottom compartment (12) of the cargo compartment, and bottom flue side plates (132) disposed on both sides of the bottom flue. The bottom flue cover plate (131) and the bottom flue side plates (132) are welded to form a semi-enclosed box structure.

5. The cargo compartment heating structure as described in claim 4, characterized in that, The cargo compartment bottom (12) includes a bottom main board (124), a bottom front plate (121) for installing the front flue (11) of the cargo compartment, which is disposed at one end of the bottom main board (124), and a sealing plate (126) disposed adjacent to the bottom front plate (121). The sealing plate (126) is connected to both the bottom front plate (121) and the bottom main board (124). The flow guiding cavity (125) is formed by the space enclosed by the sealing plate (126), the bottom front plate (121) and the bottom main board (124).

6. The cargo compartment heating structure as described in claim 5, characterized in that, The front panel (121) of the bottom compartment is provided with a second air inlet (1211) for connecting the flow guide cavity (125). The main panel (124) of the bottom compartment is provided with a third air inlet (1241) for connecting the flow guide cavity (125) near the front panel (121). The exhaust gas enters the front flue (11) of the cargo compartment through the first air inlet (114), enters the flow guide cavity (125) through the second air inlet (1211), enters the bottom flue (13) of the cargo compartment through the third air inlet (1241), and is finally discharged through the exhaust hole (135).

7. The cargo compartment heating structure as described in claim 6, characterized in that, The exhaust port (135) is located on the bottom flue cover (131) at one end away from the third air inlet (1241).

8. The cargo compartment heating structure as described in claim 5, characterized in that, The bottom flue (13) of the cargo compartment is a long, hollow box structure. The bottom flue (13) of the cargo compartment is installed at the center of the bottom of the main board of the bottom compartment (124), and the length of the bottom flue (13) of the cargo compartment extends along the longitudinal axis of the main board of the bottom compartment (124).

9. The cargo compartment heating structure as described in claim 5, characterized in that, The bottom main board (124) is provided with a first crossbeam (122) and a second crossbeam (123) for reinforcing the cargo box bottom (12) at one end near the bottom front panel (121). The bottom flue side panel (132) is provided with two clearance grooves for avoiding the first crossbeam (122) and the second crossbeam (123). The two clearance grooves are respectively provided with an arched first sealing plate (133) and a second sealing plate (134).

10. A mining dump truck, characterized in that, Includes the cargo compartment heating structure as described in any one of claims 1-9.

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