Loader heat dissipation device and loader

Abstract

The utility model discloses a loader radiating device and a loader, the loader radiating device is installed on a rear frame of the loader and comprises a first radiator and a second radiator; the first radiator is arranged above the second radiator, the width of the first radiator is larger than that of the second radiator in the width direction of the first radiator, and the central axis of the first radiator coincides with the central axis of the second radiator. According to the heat dissipation device of the loading machine, the width of the first heat dissipation device is designed to be larger than that of the second heat dissipation device, the overall structure of the heat dissipation device is changed, the heat dissipation capacity of the heat dissipation device is improved, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loader heat dissipation, in particular to a loader heat dissipation device and a loader. Background Art

[0002] The loader radiator assembly primarily consists of a radiator assembly, air scoop, protective screen, and return air baffle. Its primary function is to dissipate heat transferred from fuel combustion to components in the loader's diesel engine into the air, ensuring the engine operates at the optimum temperature. A fan blows air to dissipate heat from the loader radiator's coolant into the air, achieving cooling. Therefore, the area of ​​the radiator affected by the airflow directly affects the heat dissipation efficiency.

[0003] Existing loader radiators generally utilize a parallel or series structure that connects a water radiator and a torque converter oil radiator. This structure securely connects the two radiators by placing a sheet metal frame around the radiator and welding nut fixing points on the sheet metal. At the same time, welded plate brackets are added to the sheet metal on both sides, and the radiators are fixed to the loader's rear frame with bolts and engage with the hood on the rear frame. Because the loader radiator has a square structure and is aligned with the hood on all sides, the square radiator, when used to meet performance requirements, has a large gap between the hood and the radiator, resulting in large hot air backflow and poor heat dissipation. Furthermore, the overall square structure of the loader radiator results in a small windward area and poor heat dissipation. Utility Model Content

[0004] In order to overcome at least one of the defects described in the above-mentioned prior art, one of the purposes of the present utility model is to provide a loader heat dissipation device, by designing the width of the first radiator to be larger than the width of the second radiator, changing the overall structure of the radiator, improving the heat dissipation capacity of the radiator, and improving the heat dissipation effect.

[0005] In order to overcome at least one of the defects described in the above-mentioned prior art, the second purpose of the present utility model is to provide a loader, on which the aforementioned loader heat dissipation device is applied, so that after installation, the gap between the loader heat dissipation device and the hood on the rear frame is small, thereby reducing the amount of hot air backflow and improving the heat dissipation effect of the loader.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] A loader heat dissipation device is mounted on a rear frame of the loader and cooperates with a hood on the rear frame, comprising a first radiator and a second radiator;

[0008] The first radiator is placed above the second radiator, and along the width direction of the first radiator, the width of the first radiator is greater than the width of the second radiator, and the central axis of the first radiator coincides with the central axis of the second radiator.

[0009] Further: further comprising a first side bracket and a second side bracket; the first side bracket and the second side bracket are arranged opposite to each other;

[0010] The first radiator is fixedly connected to the first side bracket and the second side bracket;

[0011] The second radiator is fixedly connected to the first side bracket and the second side bracket.

[0012] Furthermore, it further comprises a top bracket, the first radiator is fixedly connected to the top bracket, and both ends of the top bracket are fixedly connected to the first side bracket and the second side bracket respectively;

[0013] The length of the top bracket is adapted to the width of the heat dissipation device installation position provided on the rear frame;

[0014] It also includes a bottom bracket, the second radiator is fixedly connected to the bottom bracket, and two ends of the bottom bracket are respectively fixedly connected to the first side bracket and the second side bracket;

[0015] The length of the bottom bracket is adapted to the width of the installation position of the heat dissipation device arranged on the rear frame.

[0016] Furthermore, the loader heat dissipation device further includes an air guide cover, which is arranged on the first radiator and the second radiator; the air guide cover includes an upper cover body and a lower cover body that are fixedly connected;

[0017] Along the transverse virtual line connecting the first side bracket and the second side bracket, the width of the upper cover body is adapted to the width of the first radiator, and the width of the lower cover body is adapted to the width of the second radiator;

[0018] The height of the upper cover body is adapted to the height of the first radiator, and the height of the lower cover body is adapted to the height of the second radiator.

[0019] Furthermore: a hollow mounting hole is provided on the air guide cover, a fan is fixedly installed in the hollow mounting hole, the fan is arranged toward the first radiator and the second radiator, and blows air toward the first radiator and the second radiator.

[0020] Furthermore: a protective mesh cover is also provided on the air guide cover, and the protective mesh cover is provided on the fan.

[0021] Furthermore: the loader heat dissipation device also includes a first sealing strip and a second sealing strip, the first sealing strip is arranged between the air guide cover and the first radiator and the second radiator, and the second sealing strip is arranged between the air guide cover and the first radiator and the second radiator; the first sealing strip and the second sealing strip are respectively arranged close to the first side bracket and the second side bracket.

[0022] Furthermore, the first side bracket is provided with a first bending portion, and the bottom end of the first side bracket is bent toward the second radiator side by the first bending portion; the second side bracket is provided with a second bending portion, and the bottom end of the second side bracket is bent toward the second radiator side by the second bending portion;

[0023] A first connecting plate is provided on the first bending portion, and a second connecting plate is provided on the second bending portion. Both the first connecting plate and the second connecting plate are fixedly connected to the air guide cover.

[0024] Furthermore: the first radiator is a water radiator, and the second radiator is a torque converter oil radiator.

[0025] A loader comprises a rear frame, wherein a mounting portion is provided on the rear frame, and the aforementioned loader heat dissipation device is mounted on the mounting portion, and the loader heat dissipation device cooperates with a hood on the rear frame.

[0026] In summary, the heat dissipation device for a loader provided by the present invention has the following technical effects:

[0027] 1. The first radiator is placed above the second radiator. The width of the first radiator is greater than that of the second radiator, which can effectively increase the heat dissipation area or windward area of ​​the first radiator, improve the heat dissipation effect of the first radiator, and improve the overall heat dissipation effect of the loader heat dissipation device.

[0028] 2. The first radiator is placed above the second radiator, and the width of the first radiator is greater than that of the second radiator, thereby appropriately reducing the thickness of the first radiator and reducing the manufacturing cost of the loader heat dissipation device.

[0029] 3. The first radiator is placed above the second radiator, and the width of the first radiator is greater than that of the second radiator. By increasing the width of the first radiator, the loader heat dissipation device, especially the first radiator, is installed on the rear frame and cooperates with the hood on the rear frame. The gap between the hood and the hood is reduced, which can effectively reduce the backflow of hot air and improve the heat dissipation effect of the loader heat dissipation device on the loader.

[0030] In summary, the loader provided by the present invention has the following technical effects:

[0031] The loader uses the aforementioned loader heat dissipation device, which improves and enhances the heat dissipation effect of the loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The utility model is a structural schematic diagram of an embodiment of a loader heat dissipation device.

[0033] Figure 2 for Figure 1 Exploded diagram.

[0034] Figure 3 This is a structural diagram of an embodiment of a first radiator.

[0035] Figure 4 A schematic structural diagram of an embodiment of a second radiator.

[0036] Figure 5 This is a schematic structural diagram of an embodiment of a top bracket.

[0037] Figure 6 Schematic diagram of the structure of an embodiment of a bottom bracket.

[0038] Figure 7 This is a structural schematic diagram of an embodiment of a first side bracket.

[0039] Figure 8 This is a structural diagram of an embodiment of a second side bracket.

[0040] Figure 9 The figure is a structural diagram of an embodiment of an air guide cover.

[0041] Figure 10 This is a schematic diagram of a loader heat dissipation device installed on a rear frame and fitted with a hood according to the utility model.

[0042] The meanings of the reference numerals are as follows:

[0043] 1. Air guide cover; 11. Hollow mounting hole; 2. First side bracket; 21. First reinforcing rib; 22. First connecting plate; 23. First bending portion; 3. Top bracket; 31. Fifth connecting portion; 32. Sixth connecting portion; 4. Protective mesh; 5. Second side bracket; 51. Second reinforcing rib; 52. Second connecting plate; 53. Second bending portion; 6. Bottom bracket; 61. Third connecting portion; 62. Fourth connecting portion; 7. Second radiator; 72. Second connecting portion; 8. First radiator; 81. Liquid injection portion; 82. First connecting portion; 91. First sealing strip; 92. Second sealing strip

[0044] 10. Loader cooling device; 20. Existing radiator; 30. Hood inner contour. DETAILED DESCRIPTION

[0045] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0048] See Figure 10 , Figure 10 In the figure, the thin solid line shows the loader heat dissipation device 10 in the present technical solution, which is fixedly mounted on the rear frame and cooperates with the hood on the rear frame. The dotted line shows the existing radiator 20 in the prior art, and the dotted line shows the inner contour 30 of the hood. In the prior art, the structure of the hood is generally determined when the hood is designed and will be produced and processed according to the design. That is, the structure of the hood on the loader is generally not changeable. Figure 10 As can be seen in the figure, the hood inner profile 30 is wide at the top and narrow at the bottom. The existing radiator 20 in the prior art has an overall square structure with equal widths at the top and bottom. Due to the hood structure, the existing radiator 20 in the prior art is relatively narrow. The width of the existing radiator 20 is adapted to the minimum width of the hood. As a result, the existing radiator 20 is narrow and has a narrow windward heat dissipation surface, resulting in poor heat dissipation effect and capacity. Furthermore, the gap between the existing radiator 20 and the hood inner profile 30 is large, which easily causes significant hot air backflow, affecting the heat dissipation effect on the loader.

[0049] The loader heat dissipation device 10 in the present technical solution solves the above problem well by changing the width of the first radiator 8. The loader heat dissipation device 10 in the present technical solution is introduced in detail below.

[0050] See Figure 1 and Figure 2 The utility model discloses a loader heat dissipation device 10.

[0051] See Figure 1and Figure 2 The loader heat dissipation device 10 of the present technical solution is installed on the rear frame of the loader and cooperates with the hood on the rear frame. The loader heat dissipation device 10 includes a first radiator 8 and a second radiator 7.

[0052] The first radiator 8 is placed above the second radiator 7 , and along the width direction of the first radiator 8 , the width of the first radiator 8 is greater than the width of the second radiator 7 , and the central axis of the first radiator 8 coincides with the central axis of the second radiator 7 .

[0053] In the above scheme, the first radiator 8 is placed above the second radiator 7, and the width of the first radiator 8 is greater than the width of the second radiator 7, which can effectively increase the heat dissipation area or windward area of ​​the first radiator 8, improve the heat dissipation effect of the first radiator 8, and improve the overall heat dissipation effect of the loader heat dissipation device 10.

[0054] In the above technical solution, the first radiator 8 is placed above the second radiator 7, and the width of the first radiator 8 is greater than the width of the second radiator 7. Under the requirement of the same heat dissipation effect, the thickness of the first radiator 8 can be appropriately reduced, thereby reducing the production cost of the loader heat dissipation device 10.

[0055] In the above technical solution, the first radiator 8 is placed above the second radiator 7, and the width of the first radiator 8 is greater than the width of the second radiator 7. By increasing the width of the first radiator 8, the gap between the loader heat dissipation device 10, especially the first radiator 8, and the hood on the rear frame is reduced after being installed on the rear frame, which can effectively reduce the backflow of hot air and improve the heat dissipation effect of the loader heat dissipation device 10 on the loader.

[0056] In the above technical solution, the central axis of the first radiator 8 coincides with the central axis of the second radiator 7, so that the widths on both sides of the first radiator 8 and the second radiator 7 are adapted to the width of the installation position on the rear frame, which facilitates the installation of the first radiator 8 and the second radiator 7 on the rear frame and greatly reduces the gap between the hood.

[0057] In this technical solution, the loader heat dissipation device 10 further includes a first side bracket 2 and a second side bracket 5 ; the first side bracket 2 and the second side bracket 5 are arranged opposite to each other.

[0058] The first radiator 8 is fixedly connected to the first side bracket 2 and the second side bracket 5;

[0059] The second radiator 7 is fixedly connected to the first side bracket 2 and the second side bracket 5 .

[0060] The first side bracket 2 and the second side bracket 5 realize the installation and fixation of the first radiator 8 and the second radiator 7. On the one hand, the first radiator 8 and the second radiator 7 are relatively fixed, and on the other hand, the first radiator 8 and the second radiator 7 are installed on the rear frame.

[0061] In the above technical solution, the first radiator 8 and the second radiator 7 are both fixedly installed between the first side bracket 2 and the second side bracket 5, so that the first radiator 8 and the second radiator 7 are relatively fixed, avoiding the relative displacement problem of the first radiator 8 and the second radiator 7 during operation, ensuring that the first radiator 8 and the second radiator 7 are installed on the rear frame as a whole, reducing operating noise and vibration.

[0062] In this technical solution, the loader heat dissipation device 10 further includes a top bracket 3, a first radiator 8 is fixedly connected to the top bracket 3, and two ends of the top bracket 3 are respectively fixedly connected to the first side bracket 2 and the second side bracket 5.

[0063] The length of the top bracket 3 is adapted to the width of the installation position of the heat dissipation device provided on the rear frame.

[0064] It also includes a bottom bracket 6, a second radiator 7 is fixedly connected to the bottom bracket 6, and two ends of the bottom bracket 6 are fixedly connected to the first side bracket 2 and the second side bracket 5 respectively.

[0065] The length of the bottom bracket 6 is adapted to the width of the installation position of the heat dissipation device provided on the rear frame.

[0066] In the above solution, by providing the top bracket 3 and the bottom bracket 6, a mounting frame is arranged around the loader heat sink 10, thereby achieving the overall installation and fixation of the loader heat sink 10. The first side bracket 2 and the second side bracket 5, as well as the top bracket 3 and the bottom bracket 6, are all detachably fixed to the rear frame, effectively achieving a detachable and fixed connection between the loader heat sink 10 and the rear frame.

[0067] In this embodiment, a first connecting portion 82 is provided on the side of the first radiator 8 facing the first side bracket 2, and the first radiator 8 is fixedly connected to the first side bracket 2 via the first connecting portion 82. Similarly, a connecting portion is provided on the side of the first radiator 8 facing the second side bracket 5, and the first radiator 8 is fixedly connected to the second side bracket 5 via this connecting portion.

[0068] In this technical solution, a second connecting portion 72 is provided on the side of the second radiator 7 facing the first side bracket 2, and the second radiator 7 is fixedly connected to the first side bracket 2 via the second connecting portion 72. Similarly, another connecting portion is provided on the side of the second radiator 7 facing the second side bracket 5, and the second radiator 7 is fixedly connected to the second side bracket 5 via this connecting portion.

[0069] In this technical solution, the top bracket 3 is provided with a fifth connecting portion 31, which is detachably fixedly connected to the first radiator 8. A sixth connecting portion 32 is provided at each end of the top bracket 3, and the top bracket 3 is detachably fixedly connected to the first side bracket 2 and the second side bracket 5 respectively via the two sixth connecting portions 32.

[0070] In this technical solution, the bottom bracket 6 is provided with a third connecting portion 61, which is detachably fixedly connected to the second radiator 7. A fourth connecting portion 62 is provided at each end of the bottom bracket 6, and the bottom bracket 6 is detachably fixedly connected to the first side bracket 2 and the second side bracket 5 respectively through the two fourth connecting portions 62.

[0071] In the above solution, each bracket and each radiator are detachably connected, generally by connecting bolts or the like. The connection operation or the disassembly operation is simple and convenient, and the connection operation is not restricted by the site.

[0072] In this technical solution, the loader heat dissipation device 10 further includes an air guide 1. The air guide 1 is arranged on the first radiator 8 and the second radiator 7 to guide the heat dissipation airflow toward the first radiator 8 and the second radiator 7, thereby improving the heat dissipation effect and enhancing the heat dissipation capacity of the loader heat dissipation device 10.

[0073] The air scoop 1 comprises an upper scoop and a lower scoop that are fixedly connected. Along the width of the first radiator 8, the width of the upper scoop matches the width of the first radiator 8, the width of the lower scoop matches the width of the second radiator 7, and the height of the upper scoop matches the height of the first radiator 8, while the height of the lower scoop matches the height of the second radiator 7. The shape and size of the air scoop 1 are compatible with the relatively fixed first and second radiators 8 and 7, facilitating installation of the air scoop 1 and, more importantly, the installation of the loader's heat dissipation device 10 on the rear frame.

[0074] In this technical solution, a hollow mounting hole 11 is provided on the air scoop 1, and a fan is fixedly mounted in the hollow mounting hole 11. The fan is arranged toward the first radiator 8 and the second radiator 7 and blows air toward the first radiator 8 and the second radiator 7. The fan blows a cooling airflow into the first air scoop 1, and then the cooling airflow contacts the first radiator 8 and / or the second radiator 7, thereby improving the heat dissipation effect of the first radiator 8 and the second radiator 7, and enhancing the heat dissipation effect of the loader heat dissipation device 10 mainly composed of the first radiator 8 and the second radiator 7 on the loader.

[0075] In this technical solution, the air guide 1 is further provided with a protective mesh 4, which is arranged to cover the fan. When the fan on the air guide 1 is in operation, the blades rotate at high speed, drawing in a large amount of airflow. At this time, some foreign matter may be moved by the airflow to the fan, colliding with the fan and causing damage to the fan. By providing the protective mesh 4, which is fixed to the outside of the fan, the fan is protected, and foreign matter is prevented from entering the fan, ensuring the normal operation of the fan.

[0076] In the present technical solution, the loader heat dissipation device 10 also includes a first sealing strip 91 and a second sealing strip 92. The first sealing strip 91 is arranged between the air guide cover 1 and the first radiator 8 and the second radiator 7, and the second sealing strip 92 is arranged between the air guide cover 1 and the first radiator 8 and the second radiator 7; the first sealing strip 91 and the second sealing strip 92 are respectively arranged close to the first side bracket 2 and the second side bracket 5.

[0077] In the above embodiment, the provision of first and second sealing strips 91, 92, on the one hand, seals the air scoop 1 against the first and second radiators 8, 7, thereby reducing the loss of low-temperature heat dissipation airflow and the recirculation of hot air, thereby improving heat dissipation. Furthermore, the provision of the sealing strips reduces vibration and friction between the air scoop 1, the first and second radiators 8, 7, and thus reduces vibration and noise during operation of the loader heat dissipation device 10.

[0078] In this technical solution, the first side bracket 2 is provided with a first bending portion 23, and the bottom end of the first side bracket 2 is bent toward the second radiator 7 by the first bending portion 23. The second side bracket 5 is provided with a second bending portion 53, and the bottom end of the second side bracket 5 is bent toward the second radiator 7 by the second bending portion 53.

[0079] A first connecting plate 22 is provided on the first bending portion 23 , and a second connecting plate 52 is provided on the second bending portion 53 . Both the first connecting plate 22 and the second connecting plate 52 are fixedly connected to the air guide cover 1 .

[0080] In the above solution, by providing the first bending portion 23 and the second bending portion 53 on the first side bracket 2 and the second side bracket 5 respectively, the first side bracket 2 and the second side bracket 5 are ensured to be reliably connected and installed with the first radiator 8 and the second radiator 7.

[0081] By providing the first connecting plate 22 and the second connecting plate 52 , the loader heat dissipation device 10 is detachably fixedly connected and installed with the rear frame.

[0082] In order to improve the strength of the first side bracket 2 and the second side bracket 5 at the bent position, a first reinforcing rib 21 and a second reinforcing rib 51 are respectively provided at the first bent portion 23 and the second bent portion 53 .

[0083] In this technical solution, the first radiator 8 is a water radiator, and the second radiator 7 is a torque converter oil radiator. A liquid injection port 81 is connected to the first radiator 8. The first radiator 8 and the second radiator can be installed in parallel or in series to improve the heat dissipation effect of the loader heat dissipation device 10 on the loader.

[0084] In the present technical solution, a loader is further provided, comprising a rear frame, a mounting portion being provided on the rear frame, and the aforementioned loader heat dissipation device 10 being mounted on the mounting portion. The loader heat dissipation device is matched with a hood on the rear frame.

[0085] The aforementioned loader heat dissipation device 10 is used on this loader. After the loader heat dissipation device 10 is installed on the rear frame, the gap between the hood on the rear frame and the loader heat dissipation device 10 is small, which reduces the backflow of hot air and improves and enhances the heat dissipation effect of the loader.

[0086] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A loader heat dissipation device, mounted on the rear frame of the loader and cooperating with the hood on the rear frame, characterized in that: including a first radiator and a second radiator; The first radiator is placed above the second radiator, and along the width direction of the first radiator, the width of the first radiator is greater than the width of the second radiator, and the central axis of the first radiator coincides with the central axis of the second radiator.

2. The loader heat dissipation device according to claim 1, characterized in that: It also includes a first side bracket and a second side bracket; the first side bracket and the second side bracket are arranged opposite to each other; The first radiator is fixedly connected to the first side bracket and the second side bracket; The second radiator is fixedly connected to the first side bracket and the second side bracket.

3. The loader heat dissipation device according to claim 2, characterized in that: It also includes a top bracket, the first radiator is fixedly connected to the top bracket, and two ends of the top bracket are respectively fixedly connected to the first side bracket and the second side bracket; The length of the top bracket is adapted to the width of the heat dissipation device installation position provided on the rear frame; It also includes a bottom bracket, the second radiator is fixedly connected to the bottom bracket, and two ends of the bottom bracket are respectively fixedly connected to the first side bracket and the second side bracket; The length of the bottom bracket is adapted to the width of the installation position of the heat dissipation device arranged on the rear frame.

4. The loader heat dissipation device according to claim 2 or 3, characterized in that: It also includes an air guide cover, which is arranged on the first radiator and the second radiator; the air guide cover includes an upper cover body and a lower cover body that are fixedly connected; Along the width direction of the first radiator, the width of the upper cover body is adapted to the width of the first radiator, and the width of the lower cover body is adapted to the width of the second radiator; The height of the upper cover body is adapted to the height of the first radiator, and the height of the lower cover body is adapted to the height of the second radiator.

5. The loader heat dissipation device according to claim 4, characterized in that: The air guide cover is provided with a hollow mounting hole, in which a fan is fixedly installed. The fan is arranged toward the first radiator and the second radiator and blows air toward the first radiator and the second radiator.

6. The loader heat dissipation device according to claim 5, characterized in that: The air guide cover is also provided with a protective mesh cover, and the protective mesh cover is provided on the fan.

7. The loader heat dissipation device according to claim 6, characterized in that: It also includes a first sealing strip and a second sealing strip, the first sealing strip is arranged between the air guide cover and the first radiator and the second radiator, and the second sealing strip is arranged between the air guide cover and the first radiator and the second radiator; the first sealing strip and the second sealing strip are respectively arranged close to the first side bracket and the second side bracket.

8. The loader heat dissipation device according to claim 6, characterized in that: The first side bracket is provided with a first bending portion, and the bottom end of the first side bracket is bent toward the second radiator side by the first bending portion; the second side bracket is provided with a second bending portion, and the bottom end of the second side bracket is bent toward the second radiator side by the second bending portion; A first connecting plate is provided on the first bending portion, and a second connecting plate is provided on the second bending portion. Both the first connecting plate and the second connecting plate are fixedly connected to the air guide cover.

9. The loader heat dissipation device according to claim 1, characterized in that: The first radiator is a water radiator, and the second radiator is a torque converter oil radiator.

10. A loader, characterized in that: It comprises a rear frame, a mounting portion is provided on the rear frame, the loader heat dissipation device according to any one of claims 1 to 9 is mounted on the mounting portion, and the loader heat dissipation device cooperates with a hood on the rear frame.

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