Forced heat dissipation structure of lightning protection vehicle transfer case
By designing a forced heat dissipation structure on the lightning-proof vehicle transfer device and using the fan blade structure to drive the airflow circulation, the high temperature problem of the transfer device caused by insufficient air volume in the protective cover is solved, effective heat dissipation effect is achieved, and the service life of the transfer device is extended.
Patent Information
- Application Number
- CN202422007818.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-19
AI Technical Summary
After the existing lightning protection vehicle is equipped with a protective cover at the bottom of the vehicle, the air volume entering the protective cover through the through-hole is insufficient to cool the transfer assembly, resulting in damage to the transfer assembly components due to high temperature.
A forced heat dissipation structure of lightning-proof vehicle transfer device is designed, including a first annular support and a plurality of fan blades. The fan blades are arranged at equal intervals on the outer surface of the first annular support. The fan blades are arranged inclined on the outer surface of the first annular support, and are fixedly connected to the first annular support through the third output shaft, which drives the heat dissipation structure to increase the air flow in the protective cover, and realizes cooling of the transfer device.
By increasing the airflow circulation, the temperature of the transferor is effectively reduced, preventing damage caused by high temperatures, and extending the service life of the transferor.
Smart Images

Figure CN222992099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transfer case heat dissipation, in particular to a forced heat dissipation structure for the transfer case of a mine-resistant vehicle. Background Art
[0002] A mine-resistant vehicle, full name Mine Resistant Ambush Protected (abbreviated as MRAP), is a special military vehicle designed to improve battlefield survival ability. It is mainly used to protect against landmines, improvised explosive devices (IEDs) and other battlefield threats, ensuring that the vehicle occupants can minimize injuries when suffering such attacks.
[0003] Due to the requirement of protecting against landmines, existing mine-resistant vehicles usually need to set a protective cover at the bottom of the vehicle to disperse the shock wave generated by landmines and avoid harm to the vehicle occupants. After setting the protective cover at the bottom of the vehicle, the transmission system, such as the transfer case and other assembly components, will be wrapped inside the protective cover. When the vehicle runs for a long time, since there are only through holes for the front drive shaft and the rear drive shaft left on the protective cover, the air volume entering the protective cover through the through holes is not enough to cool the transfer case assembly, resulting in the lubricating oil of the transfer case assembly reaching or exceeding the design critical value and then deteriorating, losing its lubricating function, and causing the components of the transfer case assembly to be damaged due to high temperature. Summary of the Invention
[0004] The purpose of the utility model is to provide a forced heat dissipation structure for the transfer case of a mine-resistant vehicle, which is used to solve the technical problem that after a protective cover is set at the bottom of an existing mine-resistant vehicle, the components of the transfer case assembly are damaged due to high temperature because the air volume entering the protective cover through the through hole is not enough to cool the transfer case assembly. In view of this, the utility model is realized through the following solutions.
[0005] In a first aspect, the utility model provides a forced heat dissipation structure for the transfer case of a mine-resistant vehicle. The mine-resistant vehicle includes a front axle, a rear axle, a front drive shaft, a rear drive shaft and a transfer case. The transfer case is provided with at least a first output shaft, a second output shaft and a third output shaft. The mine-resistant vehicle further includes a protective cover, and the protective cover is provided with opposite first through holes and second through holes;
[0006] The heat dissipation structure includes a first annular support and a plurality of fan blades. The plurality of fan blades are arranged at equal intervals on the outer surface of the first annular support, and the plurality of fan blades are obliquely arranged on the outer surface of the first annular support;
[0007] One end of the front drive shaft is connected to the front axle, and the other end is connected to the first output shaft through the first through hole; one end of the rear drive shaft is connected to the rear axle, and the other end is connected to the second output shaft through the second through hole;
[0008] The heat dissipation structure is fixedly connected to the third output shaft through the first annular support.
[0009] Compared with the prior art, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the transfer case is provided with at least a first output shaft, a second output shaft and a third output shaft, and a heat dissipation structure is fixedly connected to the third output shaft. The heat dissipation structure includes a first annular support and a plurality of fan blades. The plurality of fan blades are arranged at equal intervals on the outer surface of the first annular support, and the plurality of fan blades are inclined on the outer surface of the first annular support. The heat dissipation structure is fixedly connected to the third output shaft through the first annular support. During the operation of the lightning protection vehicle, that is, during the operation of the transfer case, the third output shaft arranged on the transfer case drives the heat dissipation structure to rotate through the first annular support fixedly connected thereto, and then the air flow in the protective cover is accelerated through the fan blades of the heat dissipation structure, so as to achieve the purpose of cooling the transfer case in the protective cover. During the rotation of the above heat dissipation structure, the air flow can enter through the first through hole of the protective cover and then flow out through the second through hole of the protective cover, or can enter through the second through hole of the protective cover and then flow out through the first through hole of the protective cover. The specific flow direction of the air flow is determined by the specific installation position of the heat dissipation structure and the rotation direction of the fan blades in the heat dissipation structure. Through the above technical solution of the present utility model, the technical problem that after the protective cover is arranged at the bottom of the existing lightning protection vehicle, the air volume entering the protective cover through the through hole is not enough to cool the transfer case assembly, resulting in damage to the components of the transfer case assembly due to high temperature is solved.
[0010] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the heat dissipation structure further includes a second annular support;
[0011] One end of each of the plurality of fan blades is fixedly connected to the outer surface of the first annular support, and the other end is fixedly connected to the inner surface of the second annular support.
[0012] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the outer diameter ratio of the first annular support to the second annular support is 1:(2-7).
[0013] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the outer diameter of the first annular support is 10-20 cm; and / or, the outer diameter of the second annular support is 40-70 cm.
[0014] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the third output shaft is provided with a flange, and the first annular support is fixedly connected to the flange.
[0015] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the fixed connection includes threaded connection, riveting, welding and bonding.
[0016] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the flange and the first annular support are provided with threaded holes, and the first annular support is threadedly connected to the flange.
[0017] Further, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, a fourth output shaft is provided on the side of the transfer case opposite to the third output shaft, and the heat dissipation structure is provided on the fourth output shaft.
[0018] In a second aspect, the present utility model provides a transfer case provided with the above heat dissipation structure.
[0019] Compared with the prior art, the beneficial effects of the transfer case of the present utility model are the same as those of the forced heat dissipation structure of the transfer case of the lightning protection vehicle described in the above technical solution, and will not be elaborated here.
[0020] In a third aspect, the present utility model provides a lightning protection vehicle provided with the above transfer case.
[0021] Compared with the prior art, the beneficial effects of the lightning protection vehicle of the present utility model are the same as those of the forced heat dissipation structure of the transfer case of the lightning protection vehicle described in the above technical solution, and will not be elaborated here. Description of the Drawings
[0022] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:
[0023] Figure 1 is a schematic connection diagram of a forced heat dissipation structure of a transfer case of a lightning protection vehicle and a transfer case of the present utility model;
[0024] Figure 2 is a schematic connection diagram of another forced heat dissipation structure of a transfer case of a lightning protection vehicle and a transfer case of the present utility model;
[0025] Figure 3 is a schematic diagram of a forced heat dissipation structure of a transfer case of a lightning protection vehicle of the present utility model;
[0026] Figure 4 is a schematic diagram of another forced heat dissipation structure of a transfer case of a lightning protection vehicle of the present utility model;
[0027] Figure 5 is a schematic diagram of a partial structure of a lightning protection vehicle of the present utility model.
[0028] Reference Numerals:
[0029] 1. Front axle; 2. Rear axle; 3. Front drive shaft; 4. Rear drive shaft; 5. Transfer case; 501. First output shaft; 502. Second output shaft; 503. Third output shaft; 504. Flange; 505. Fourth output shaft; 6. Protective cover; 601. First through hole; 602. Second through hole; 7. Heat dissipation structure; 701. First annular support; 702. Fan blade; 703. Second annular support. Detailed implementation manners
[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.
[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.
[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0035] Due to the requirement of protecting against landmines, existing mine-protected vehicles usually have a protective cover installed at the bottom of the vehicle to disperse the shock wave generated by the landmine and prevent the personnel inside the vehicle from being injured. After installing the protective cover at the bottom of the vehicle, the drive system, such as the transfer case and other assembly components, will be wrapped inside the protective cover. After the vehicle runs for a long time, since there are only through holes for the front drive shaft and the rear drive shaft left on the protective cover, the amount of air entering the protective cover through the through holes is not sufficient to cool the transfer case assembly, resulting in the lubricating oil of the transfer case assembly reaching or exceeding the design critical value and then deteriorating, losing its lubricating function, and causing the components of the transfer case assembly to be damaged due to high temperature.
[0036] To solve the above technical problems, please refer to Figures 1 to 5 In a first aspect, the present utility model provides a forced heat dissipation structure for the transfer case of a mine-protected vehicle. The mine-protected vehicle includes a front axle 1, a rear axle 2, a front drive shaft 3, a rear drive shaft 4, and a transfer case 5. The transfer case 5 is provided with at least a first output shaft 501, a second output shaft 502, and a third output shaft 503. The mine-protected vehicle further includes a protective cover 6, and the protective cover 6 is provided with opposite first through hole 601 and second through hole 602; the heat dissipation structure 7 includes a first annular support 701 and a plurality of fan blades 702. The plurality of fan blades 702 are equidistantly arranged on the outer surface of the first annular support 701, and the plurality of fan blades 702 are inclined on the outer surface of the first annular support 701; one end of the front drive shaft 3 is connected to the front axle 1, and the other end is connected to the first output shaft 501 through the first through hole 601; one end of the rear drive shaft 4 is connected to the rear axle 2, and the other end is connected to the second output shaft 502 through the second through hole 602; the heat dissipation structure 7 is fixedly connected to the third output shaft 503 through the first annular support 701.
[0037] During specific implementation: The transfer case 5 is provided with a third output shaft 503. A protective cover 6 is arranged outside the transfer case 5. The protective cover 6 is provided with a first through hole 601 and a second through hole 602. The heat dissipation structure 7 is fixedly connected to the third output shaft 503 of the transfer case 5 and the protective cover 6. Specifically, the first annular support 701 of the heat dissipation structure 7 is fixedly connected to the third output shaft 503. Since the outer surface of the first annular support 701 is inclined with fan blades 702, after the transfer case 5 is started, the third output shaft 503 rotates, and the third output shaft 503 then drives the heat dissipation structure 7 connected thereto to rotate. The fan blades 702 inclined on the outer surface of the first annular support 701 accelerate the air flow in the protective cover 6, thereby playing a role in cooling the transfer case 5. Specifically, the inclination direction of the fan blades 702 should enable the air flow to accelerate towards the transfer case 5 or enable the air flow to accelerate away from the transfer case 5. During the rotation of the heat dissipation structure 7, the air flow velocity in the protective cover 6 increases, and the air flow enters from the air inlet and exits from the air outlet. Specifically, according to the rotation direction of the heat dissipation structure 7 or the specific installation position of the heat dissipation structure 7, the first through hole 601 or the second through hole 602 can be used as the air inlet, and the first through hole 601 or the second through hole 602 can also be used as the air inlet. For example, when the heat dissipation structure 7 rotates, if the air flow flows from the first through hole 601 to the second through hole 602, then the first through hole 601 is the air inlet and the second through hole 602 is the air outlet; if the air flow flows from the second through hole 602 to the first through hole 601, then the second through hole 602 is the air inlet and the first through hole 601 is the air outlet.
[0038] As can be seen from the above-mentioned forced cooling structure and specific implementation process of the transfer case of the lightning protection vehicle, in the forced cooling structure of the transfer case of the lightning protection vehicle of the present invention, the transfer case 5 is provided with at least a first output shaft 501, a second output shaft 502 and a third output shaft 503, and a cooling structure 7 is fixedly connected to the third output shaft 503. The cooling structure 7 includes a first annular support 701 and a plurality of fan blades 702. The plurality of fan blades 702 are equidistantly arranged on the outer surface of the first annular support 701, and the plurality of fan blades 702 are inclined on the outer surface of the first annular support 701. The cooling structure 7 is fixedly connected to the third output shaft 503 through the first annular support 701. During the operation of the lightning protection vehicle, that is, during the operation of the transfer case 5, the third output shaft 503 provided on the transfer case 5 drives the cooling structure 7 to rotate through the first annular support 701 fixedly connected thereto, and then accelerates the air flow in the protective cover 6 through the fan blades 702 of the cooling structure 7, so as to achieve the purpose of cooling the transfer case 5 in the protective cover 6. During the rotation of the above-mentioned cooling structure 7, the air flow can enter through the first through hole 601 of the protective cover 6 and then flow out through the second through hole 602 of the protective cover 6, or enter through the second through hole 602 of the protective cover 6 and then flow out through the first through hole 601 of the protective cover 6. The specific flow direction of the air flow is determined by the specific installation position of the cooling structure 7 and the rotation direction of the fan blades 702 in the cooling structure 7. Through the above technical solution of the present invention, the technical problem that after the protective cover 6 is provided at the bottom of the existing lightning protection vehicle, the air volume entering the protective cover 6 through the through hole is not sufficient to cool the transfer case 5 assembly, resulting in damage to the components of the transfer case 5 assembly due to high temperature is solved.
[0039] In order to further improve the stability of the forced cooling structure of the transfer case of the lightning protection vehicle of the present invention, the cooling structure 7 further includes a second annular support 703; one end of the plurality of fan blades 702 is fixedly connected to the outer surface of the first annular support 701, and the other end is fixedly connected to the inner surface of the second annular support 703. Specifically, the second annular support 703 serves as a fixed point for the other end of the fan blade 702, and together with the first annular support 701, it constitutes a stable support structure for the fan blade 702, which can effectively improve the stability and anti-deformation ability of the fan blade 702 during operation, reduce structural fatigue and damage caused by vibration or high-speed rotation, and thus extend the service life of the cooling structure 7.
[0040] Please refer to Figure 1 、 Figure 2 and Figure 4, as a possible implementation, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the outer diameter ratio of the first annular support 701 to the second annular support 703 is 1: (2 - 7). With the above technical solution, the heat dissipation structure 7 should match the size of the transfer case 5, and enable the heat dissipation structure 7 to rotate normally within the protective cover 6 without interference or obstruction from other structures. By reasonably setting the outer diameter ratio of the first annular support 701 to the second annular support 703, the size or shape of the fan blade 702 can be optimized, so that the fan blade 702 can more effectively guide the air flow when rotating, increase the air volume passing through the radiator, thereby improving the heat dissipation efficiency. The larger second annular support 703 allows the fan blade 702 to be designed longer or wider, thus generating a larger air volume at the same rotational speed. Further, the appropriate outer diameter ratio of the first annular support 701 to the second annular support 703 also helps to reduce the turbulence and eddy currents of the air between the fan blades 702, reduce energy loss, and improve the heat dissipation efficiency. By controlling the outer diameter ratio of the first annular support 701 to the second annular support 703, a heat dissipation structure 7 with reasonable dimensions can be selected and the heat dissipation structure 7 can be arranged at a reasonable position within the limited space of the protective cover 6, thereby avoiding interference between the heat dissipation structure 7 and other components, and at the same time leaving a certain maintenance space. For example, the outer diameter ratio of the first annular support 701 to the second annular support 703 can be 1:2, 1:3, 1:4, 1:5, 1:6 or 1:7; in another example, the outer diameter of the first annular support 701 can be 10 - 20 cm, and the outer diameter of the second annular support 703 can be 40 - 70 cm; in yet another example, the outer diameter of the first annular support 701 can be 10 cm, 12 cm, 14 cm, 16 cm, 18 cm or 20 cm, and the outer diameter of the second annular support 703 can be 40 cm, 45 cm, 50 cm, 55 cm, 60 cm, 65 cm or 70 cm.
[0041] Please refer to Figure 1 and Figure 2 , as a possible implementation, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, a flange 504 is provided on the third output shaft 503, and the first annular support 701 is fixedly connected to the flange 504. Further, the flange 504 and the first annular support 701 are provided with threaded holes, and the first annular support 701 is threadedly connected to the flange 504. Specifically, the flange 504 is provided with a plurality of threaded holes, and the first annular support 701 is also provided with threaded holes matching the threaded holes of the flange 504, and the first annular support 701 and the flange 504 can be connected by a screw.
[0042] Please refer to Figure 2, in the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, in order to further improve the heat dissipation effect of the heat dissipation structure 7, multiple heat dissipation structures 7 can be arranged on the transfer case 5 according to actual heat dissipation requirements. For example, a fourth output shaft 505 is arranged on the transfer case 5 on the side opposite to the third output shaft 503, and a heat dissipation structure 7 can be arranged on the fourth output shaft 505. One of the heat dissipation structures 7 can accelerate the flow of air towards the transfer case 5, and the other heat dissipation structure 7 can accelerate the flow of air away from the transfer case 5; for example, the heat dissipation structure 7 connected to the third output shaft 503 can accelerate the flow of air towards the transfer case 5, while the heat dissipation structure 7 connected to the fourth output shaft 505 can accelerate the flow of air away from the transfer case 5.
[0043] Please refer to Figures 1 to 5 , on the second aspect, the present utility model provides a transfer case, and the transfer case 5 is provided with the above heat dissipation structure 7.
[0044] Adopting the above technical solution, the transfer case 5 can be used for a lightning protection vehicle. A protective cover 6 is arranged at the bottom of the lightning protection vehicle. The transfer case 5 is at least provided with a first output shaft 501, a second output shaft 502 and a third output shaft 503, and the above heat dissipation structure 7 is fixedly connected to the third output shaft 503. The heat dissipation structure 7 includes a first annular support 701 and a plurality of fan blades 702. The plurality of fan blades 702 are arranged at equal intervals on the outer surface of the first annular support 701, and the plurality of fan blades 702 are inclined on the outer surface of the first annular support 701. The heat dissipation structure 7 is fixedly connected to the third output shaft 503 through the first annular support 701. During the operation of the transfer case 5, the third output shaft 503 arranged on the transfer case 5 drives the heat dissipation structure 7 to rotate through the first annular support 701 fixedly connected thereto, and then the fan blades 702 of the heat dissipation structure 7 accelerate the air flow in the protective cover 6, thereby achieving the purpose of cooling the transfer case 5 in the protective cover 6.
[0045] Please refer to Figures 1 to 5 , on the third aspect, the present utility model provides a lightning protection vehicle, and the lightning protection vehicle is provided with the above transfer case 5.
[0046] Adopting the above technical solution, the transfer case 5 is provided with the above heat dissipation structure 7. During the operation of the lightning protection vehicle, that is, during the operation of the transfer case 5, the third output shaft 503 arranged on the transfer case 5 drives the heat dissipation structure 7 to rotate through the first annular support 701 fixedly connected thereto, and then the fan blades 702 of the heat dissipation structure 7 accelerate the air flow in the protective cover 6, thereby achieving the purpose of cooling the transfer case 5 in the protective cover 6.
[0047] In the forced heat dissipation structure of the transfer case of the lightning protection vehicle of the present utility model, the above-mentioned fixed connection can be threaded connection, riveting, welding or bonding.
[0048] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.
[0049] As mentioned above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims
1. A forced heat dissipation structure of a transfer case of a lightning protection vehicle, the lightning protection vehicle comprising a front axle, a rear axle, a front transmission shaft, a rear transmission shaft and a transfer case, the transfer case being provided with at least a first output shaft, a second output shaft and a third output shaft, characterized in that: The lightning protection vehicle further comprises a protective cover, wherein the protective cover is provided with a first through hole and a second through hole opposite to each other; The heat dissipation structure comprises a first annular support and a plurality of fan blades, wherein the plurality of fan blades are arranged at equal intervals on the outer surface of the first annular support, and the plurality of fan blades are arranged obliquely on the outer surface of the first annular support; One end of the front transmission shaft is connected to the front axle, and the other end is connected to the first output shaft through the first through hole; one end of the rear transmission shaft is connected to the rear axle, and the other end is connected to the second output shaft through the second through hole; The heat dissipation structure is fixedly connected to the third output shaft via the first annular support.
2. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 1 is characterized in that: The heat dissipation structure also includes a second annular support; One end of the plurality of fan blades is fixedly connected to the outer surface of the first annular support, and the other end is fixedly connected to the inner surface of the second annular support.
3. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 2 is characterized in that: The outer diameter ratio of the first annular support to the second annular support is 1:(2-7).
4. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 3 is characterized in that: The outer diameter of the first annular support is 10-20 cm; and / or, The outer diameter of the second annular support is 40-70 cm.
5. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 4 is characterized in that: The third output shaft is provided with a flange, and the first annular support is fixedly connected to the flange.
6. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 1 or 5, characterized in that: The fixed connection includes threaded connection, riveting, welding and bonding.
7. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 5 is characterized in that: The flange and the first annular support are provided with threaded holes, and the first annular support is threadedly connected to the flange.
8. The forced heat dissipation structure of the transfer case of a lightning protection vehicle according to claim 1 is characterized in that: A fourth output shaft is arranged on the transfer case at a side opposite to the third output shaft, and the heat dissipation structure is arranged on the fourth output shaft.
9. A transfer case, characterized in that: A heat dissipation structure according to any one of claims 1 to 8 is provided.
10. A mine protection vehicle, characterized in that: A transfer case according to claim 9 is provided.