Powertrain for large transport vehicles in desert environments

Abstract

The present invention discloses a power transmission system for large transport vehicles suitable for desert environments. Under the condition of lengthening the vehicle model, the positions of the engine, transmission, and transfer case assembly are reasonably arranged, and transmission shafts are used to connect the various parts. In addition, segmented transmission shafts are used for long distance transmission, so that long-distance transmission becomes possible. In addition, a special suspension installation method is used to alleviate stress deformation and maintain vehicle stability. This transmission system design structure is suitable for overweight and overlong vehicles.

Description

Technical Field

[0001] The invention relates to a vehicle transmission system, in particular to a power transmission system of a large vehicle suitable for special environment transportation. Background Art

[0002] The power transmission system of a vehicle is of utmost importance in vehicle design, especially for super-large transport vehicles with a load capacity of 65 tons and a total mass of about 105 tons suitable for special environments. It has more special requirements, not only considering the adaptability to road conditions, such as climbing sections, desert transportation, rainy and snowy muddy roads, but also considering the load power of the vehicle. Desert vehicles usually travel on rugged and soft roads. During the driving process, the frame will be twisted and deformed according to the road conditions to produce stress, and the power transmission system installed on it will also be affected. For extended models of about 15 meters, the power transmission path is long, which makes the power transmission system complex, affecting the transmission performance and thus affecting the safety of the vehicle. For heavy-duty and super-long transport models, full-bridge drive should generally be used to meet the power conditions. Therefore, it is found that it is desirable to provide an all-wheel drive vehicle with multi-axis torque distribution capability, especially long-axis remote drive. Summary of the invention

[0003] The present invention aims at addressing the deficiencies in the prior art and provides a power transmission system for a large transport vehicle suitable for a desert environment.

[0004] The technical solution adopted by the system is as follows: a power transmission system for a large transport vehicle suitable for a desert environment, including an engine, a transmission, a transfer case and a transmission shaft;

[0005] The engine is provided with a set of suspension structures on both sides of the front and rear ends, respectively, and the suspension structures include: a body connecting frame, a vehicle body connecting frame and a suspension cushion; the body connecting frame is connected to the lower part of the engine side in a tangential manner, and extends horizontally from the body, and is connected to the suspension cushion at the top of the horizontal extension position; one end of the vehicle body connecting frame is connected to the vehicle frame, and the other end is also extended horizontally, and is connected to the suspension cushion at the bottom of the horizontal extension position;

[0006] The transmission is provided with a set of suspension structures at the front and rear ends, respectively, and the suspension structures include: a transmission mounting bracket 1, a transmission mounting bracket 2, a suspension cushion and a suspension mounting frame, wherein the transmission mounting bracket 1 and the transmission mounting bracket 2 are each in a semi-enclosed structure, enclosing the transmission body therein; the two ends of the transmission mounting bracket 1 extend toward the frame direction on both sides, respectively, and are connected to the suspension cushion, the suspension cushion and the suspension mounting frame are integrated, and the suspension mounting frame is fixed to the frame by bolts;

[0007] The transfer case is provided with a set of suspension structures on both sides of the top, the suspension structures comprising: a suspension cushion, a cushion mounting bracket 1 and a cushion mounting bracket 2, the cushion mounting bracket 1 having one end fixed to the vehicle frame and the other end connected to the suspension cushion; the cushion mounting bracket 2 having one end fixed to the transfer case and the other end connected to the suspension cushion;

[0008] The transfer case is provided with a group of auxiliary support structures on both sides of the bottom, respectively, and the auxiliary support structures include: an auxiliary support rod, a support rod mounting bracket 1, and a support rod mounting bracket 2, wherein the support rod mounting bracket 1 has one end fixed to the transfer case and the other end connected to one end of the auxiliary support rod through a rotating shaft; the support rod mounting bracket 2 has one end fixed to the vehicle frame and the other end connected to the other end of the auxiliary support rod through a rotating shaft;

[0009] Each of the suspension cushions is made of rubber;

[0010] There are 8 transmission shafts in total, wherein a transmission shaft 1 is arranged between the engine and the transmission, transmission shafts 2 and 3 are arranged in series between the transmission and the transfer case, transmission shafts 4, 5 and 6 are arranged in series between the transfer case and the front axle, a transmission shaft 7 is arranged between the transfer case and the middle axle, and a transmission shaft 8 is arranged between the middle axle and the rear axle;

[0011] A lifting lug is provided near any node of the serially connected transmission shafts, and the corresponding transmission shaft is passed through the lifting lug, and the lifting lug is fixed to the frame crossbeam through a bracket.

[0012] Furthermore, in the suspension structure of the engine, the body connecting frame is formed by bending a steel plate into an inclined side and a horizontal side, the inclined side is tangentially welded to the lower side of the cylindrical body of the engine, the horizontal side extends horizontally out of the body, and the lower surface of the horizontal side is connected to the suspension cushion;

[0013] The vehicle body connecting frame is a tripod structure formed by welding a back plate, a bottom plate and side plates. The back plate is connected to the frame beam by bolts, the bottom plate is connected to the bottom of the suspension cushion by bolts, and the side plates are connected between the back plate and the bottom plate.

[0014] Furthermore, the bottom plate of the vehicle body connecting frame is connected to the suspension cushion in a slightly upward manner.

[0015] Furthermore, in the suspension structure of the transfer case, the cushion mounting bracket 1 and the cushion mounting bracket 2 both include a transverse plate, a vertical plate and a side connecting plate. The transverse plate and the vertical plate are vertically welded. The transverse plate is fastened to the suspension cushion by bolts, the vertical plate is fastened to the frame / transfer case by bolts, and the side connecting plate is connected between the transverse plate and the vertical plate.

[0016] Furthermore, in the auxiliary support structure of the transfer case, the support rod mounting bracket 1 includes a right-angle plate, a backing plate, a coupling plate, and a pin;

[0017] One side of the right angle plate is connected to the side of the transfer case by bolts, and the other side is vertically perpendicular to the side of the transfer case; the back plate is connected to the back of the other side of the right angle plate by bolts; two coupling plates are separately welded to the back plate, a pin is passed through between the two coupling plates, and one end of the auxiliary support rod is rotatably connected to the pin;

[0018] The support rod mounting bracket 2 includes a crossbeam connecting plate, a coupling plate, and a pin shaft;

[0019] The crossbeam connecting plate is connected to the bottom of the frame crossbeam by bolts, two coupling plates are separately welded to the bottom of the crossbeam connecting plate, a pin is passed between the two coupling plates, and the other end of the auxiliary support rod is rotatably connected to the pin.

[0020] Furthermore, the lifting ear is provided with a bushing in the shaft hole, and the top of the lifting ear is a plane connected to the bracket.

[0021] Furthermore, the front input end and the rear output end of the transmission shaft 1 to the transmission shaft 8 are connected to the flange in the following manner:

[0022]

[0023] The relevant angles of the transmission shafts 1 to 8 are designed as follows:

[0024]

[0025] Under the premise of lengthening the vehicle model, the present invention rationally arranges the positions of the engine, transmission and transfer case assembly so that each assembly can be connected by using the vehicle frame as a support and are elastically connected by suspension. The engine and transmission assembly both adopt four-point suspension to stably support from four corners, thereby reducing the impact of the vibration of the transmission system on the vehicle body. Since the transfer case assembly is much lower than the vehicle plane, it is difficult for the lower part to directly obtain frame support, so an auxiliary support method is adopted, and the upper part still adopts a suspension method and is directly connected to the frame through a suspension cushion. Overall, the design buffers the stress deformation and keeps the vehicle stable.

[0026] In view of the lengthening of the vehicle model, the present invention reasonably constructs a segmented connection mode of the transmission shaft to make the transmission system stable in the vehicle system, solves the problem of long-distance transmission, and also solves the problem of long shaft deformation and unstable transmission force. By designing a lifting lug and a support at the node of the transmission shaft and hanging the transmission shaft at the bottom of the frame, the long-distance transmission capacity of the transmission shaft is stabilized, and the stability and reliability of the vehicle are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are only for the purpose of illustrating particular embodiments and are not to be construed as limiting the invention.

[0028] Figure 1 This is the layout diagram of the entire powertrain system;

[0029] Figure 2 This is the engine assembly end connection structure diagram;

[0030] Figure 3 This is a diagram of the suspension structure on the lower side of the engine;

[0031] Figure 4 This is the engine suspension body connection frame diagram;

[0032] Figure 5 This is the engine suspension body connection frame diagram;

[0033] Figure 6 This is the connection diagram between the engine suspension cushion and the vehicle body;

[0034] Figure 7 A top view of the transmission assembly suspension structure;

[0035] Figure 8 It is the front view of the transmission assembly suspension structure;

[0036] Fig. 9 It is a side sectional view of the transmission assembly suspension structure;

[0037] Fig.10 It is a combined diagram of a suspension mounting frame and a suspension cushion in a transmission assembly suspension structure;

[0038] Fig.11 Install the side view of the transfer case assembly suspension and auxiliary support;

[0039] Fig.12 Install the front view of the transfer case assembly suspension and auxiliary support;

[0040] Fig.13 A partial view of the auxiliary support for the transfer case assembly;

[0041] Fig.14 This is a diagram of the transfer case assembly suspension cushion;

[0042] Fig.15 This is the structural diagram of the transmission shaft lifting ear;

[0043] Fig.16 This is the connection diagram between the drive shaft lifting ear and the bracket. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. The accompanying drawings and embodiments are used together to illustrate the present invention. However, those skilled in the art should know that the following embodiments are not the only limitation on the technical solutions of the present invention, and any equivalent changes or modifications made within the spirit of the technical solutions of the present invention should be deemed to fall within the protection scope of the present invention.

[0045] like Figure 1 As shown, for large all-wheel drive vehicles up to about 15 meters long, the present invention adopts the measures of front engine, rear transfer case, and two-way power output. The power transmission system mainly includes four parts: engine assembly 1, transmission assembly 2, transfer case assembly 3 and transmission shaft group. The engine assembly 1 outputs power to the transmission assembly 2, the transmission assembly 2 outputs power to the transfer case assembly 3, and the transfer case assembly 3 outputs power to the front and rear axles respectively, and each power output stage is connected by a transmission shaft. The engine matched with the power system of the present invention has a horsepower of 650P and a torque of 3300Nm; the transmission adopts a fully automatic hydraulic variable-pitch transmission.

[0046] like Figure 2 As shown, the engine assembly 1 includes an engine 11, a housing 12 and an elastic coupling 13. The present invention does not use a direct connection method between the engine assembly 1 and the transmission assembly 2, but uses a transmission shaft remote drive connection. The output end of the engine 11 is covered by the housing 12, and the housing 12 is provided with a shaft through hole. The elastic coupling 13 is connected to the engine output shaft, and the elastic coupling 13 is connected to the transmission shaft 41 outward (see FIG. Figure 1 ), a transmission shaft 41 is connected to the transmission.

[0047] The present invention adopts a suspension installation for the installation of the engine assembly 1, and suspends the engine assembly 1 on the vehicle frame at four points to ensure its stability. Figures 3 to 6The structural form shown is provided with a body connecting frame 14, a vehicle body connecting frame 15 and a suspension cushion 16. The body connecting frame 14 is bent from a steel plate into an inclined edge 141 and a horizontal edge 142. The inclined edge is connected to the lower side of the cylindrical engine body in a tangential manner. Four body connecting frames 14 jointly support the engine body; the horizontal edge extends horizontally out of the engine body, and the lower surface of the horizontal edge is connected to the suspension cushion 16. The vehicle body connecting frame 15 is a structure formed by welding a back plate 151, a bottom plate 152 and two side plates 153. The back plate is connected to the frame beam by bolts, the bottom plate is connected to the bottom of the suspension cushion 16 by bolts, and the two side plates are connected between the back plate and the bottom plate to act as reinforcing ribs. It is particularly emphasized that the bottom plate 152 is connected to the suspension cushion 16 in a slightly upward manner, and the brackets on both sides are relatively upward. The advantage of this is to prevent the engine from tilting and unbalanced. When the vehicle body tilts, one side is low and the other side is high. For the vehicle body connecting frame on the low side, the bottom plate will have a tendency to rise more and thus strengthen the connection force with the suspension. For the vehicle body connecting frame on the high side, the bottom plate will gradually flatten and will not slide down to cause the suspension to slide down. Therefore, the symmetrical upward structure on both sides can prevent the engine from tilting and being unstable. The suspension cushion 16 is a rubber body, the top of which is connected to the horizontal edge 142 of the body connecting frame 14 by bolts or vulcanized into one, and the bottom is connected to the bottom plate 152 of the vehicle body connecting frame 15 by bolts. The rubber elasticity of the suspension pad 16 can be used to cushion the impact of engine vibration on the vehicle body. As a component connecting the powertrain and the vehicle body, the suspension system mainly supports the powertrain, reduces the impact of the powertrain vibration on the entire vehicle, and limits the amount of powertrain vibration, which plays a very important role in the NVH performance of the entire vehicle.

[0048] The present invention also adopts a 4-point suspension installation for the installation of the transmission assembly 2, such as Figures 7-10 As shown, a group of suspension structures are respectively arranged at the upper and lower parts of the front and rear ends of the transmission assembly 2, including a transmission mounting bracket 1 21 and a transmission mounting bracket 2 22. The transmission mounting bracket 1 21 and the transmission mounting bracket 2 22 are each in a semi-enclosed structure, and the two are connected by bolts to enclose the transmission therein. Among them, the two ends of the transmission mounting bracket 1 21 extend toward the frame direction on both sides respectively, and are connected and fixed to the suspension assembly connected to the frame. The suspension assembly includes a suspension mounting frame 23 and a suspension cushion 24. The suspension mounting frame 23 is metal, and the suspension cushion 24 is rubber. The suspension mounting frame 23 and the suspension cushion 24 can be vulcanized into one. The suspension mounting frame 23 is fixed to the frame by bolts, and the transmission mounting bracket 1 21 is fixed to the suspension cushion 24 by bolts. Since the elastic suspension cushion is arranged between the frame and the transmission, the influence of the vibration of the power part on the whole vehicle is also reduced. Furthermore, the hardness of the rubber material is A60±3; the static stiffness in the Z direction is 1800±150N / mm, and the cold resistance and aging resistance of the rubber are in accordance with the GB / T3512-2014 standard.

[0049] The present invention adopts a two-point suspension + auxiliary support installation for the transfer case assembly 3, such as Figure 11-13 As shown. According to the selection of the transfer case, the Z dimension of the transfer case is large and much lower than the zero plane of the vehicle. For the upper part of the transfer case, a suspension installation can be adopted, while for the lower part of the transfer case, the installation position is far away from the frame in the Z direction, which is not conducive to the arrangement of the bracket, and only two auxiliary supports can be selected. Therefore, the installation structure of the transfer case assembly 3 is divided into two parts:

[0050] 1) Two suspension mounting structures I: including a suspension cushion 31, a cushion mounting bracket 1 32, and a cushion mounting bracket 2 33. The suspension cushion 31 is as shown in FIG. Fig.14 As shown. The cushion mounting bracket 1 32 includes a horizontal plate 321, a vertical plate 322 and a side connecting plate 323. The horizontal plate 321, the vertical plate 322 and the side connecting plate 323 are welded together to form a supporting structure. The horizontal plate 321 is fastened to the suspension cushion 31 by bolts, the vertical plate 322 is fastened to the frame by bolts, and the side connecting plate 323 is connected between the horizontal plate 321 and the vertical plate 322 to act as a reinforcing rib. The structure of the cushion mounting bracket 2 33 is similar to that of the cushion mounting bracket 1 32, and also includes a horizontal plate, a vertical plate and a side connecting plate. The horizontal plate is fastened to the top of the suspension cushion 31 by bolts, the vertical plate is fastened to the transfer case by bolts, and the side connecting plate is connected between the horizontal plate and the vertical plate. The cushion mounting bracket 1 32 connects the suspension cushion 31 with the vehicle frame, and the cushion mounting bracket 2 33 connects the suspension cushion 31 with the transfer case. The vehicle frame and the transfer case are softly connected, so the vibration of the transfer case has no effect on the vehicle body.

[0051] 2) Two auxiliary support installation structures II: including auxiliary support rod 34, support rod installation bracket 1 35, and support rod installation bracket 2 36. Support rod installation bracket 1 35 includes right angle plate 351, back plate 352, coupling plate 353, and pin 354. One side of the right angle plate 351 is connected to the side of the transfer case by bolts, and the other side is vertically perpendicular to the side of the transfer case; the back plate 352 is connected to the back of the other side of the right angle plate 351 by bolts; two coupling plates 353 are separately welded on the back plate 352, and a pin 354 is passed between the two coupling plates 353. One end of the auxiliary support rod 34 is rotatably connected to the pin; this structure divides the right angle plate 351 connected to the transfer case and the back plate 352 and coupling plate 353 connected to the support rod into two independent parts, which are connected by bolts. Once any part is damaged, only this part can be replaced, which saves materials and is convenient for replacement. The second support rod mounting bracket 36 includes a crossbeam connecting plate 361, a coupling plate 362, and a pin 363. The crossbeam connecting plate 361 is connected to the bottom of the frame crossbeam by bolts. Two coupling plates 362 are separately welded to the bottom of the crossbeam connecting plate 361. A pin 363 is passed between the two coupling plates 362. The other end of the auxiliary support rod 34 is rotatably connected to the pin. The auxiliary support rod 34 adapts to the dynamic changes between the frame and the transfer case through the movable connection at both ends, while maintaining the connection between the transfer case and the frame, and limiting the transfer case.

[0052] The suspension of the above three components not only maintains stability but also ensures that the transmission shafts have a small deformation. Therefore, the setting and change of the transmission shafts are simple.

[0053] The vehicle body of the present invention is long, and the engine assembly, transmission assembly, and transfer case assembly are arranged far apart. In order to adapt to the characteristics of long-distance power transmission, transmission shafts are set between the engine and the transmission, between the transmission and the transfer case, and between the transfer case and each axle. When the distance is long, multiple transmission shafts are also set to connect. In the present invention, a total of 8 transmission shafts are used, such as Figure 1 As shown, drive shaft one 41 is connected between the engine and the transmission, drive shaft two 42 and drive shaft three 43 are connected in series between the transmission and the transfer case, drive shaft four 44, drive shaft five 45, and drive shaft six 46 are connected in series between the transfer case and the front axle, and drive shaft seven 47 and drive shaft eight 48 are connected in series between the transfer case and the middle and rear axles.

[0054] According to the overall layout, the relevant positions of each transmission shaft and the connecting flanges are shown in the following table:

[0055]

[0056] The relevant positions and angles of each transmission shaft are shown in the following table:

[0057]

[0058] It is particularly emphasized that, in view of the location of the engine and the transmission, the engine and the transmission cannot be directly connected as in the traditional way, but a transmission shaft is added for connection. In view of the relatively long distance between the transmission and the transfer case, two transmission shafts are set up and connected in sections; in view of the relatively long distance between the transfer case and the front axle, three transmission shafts are set up and connected in sections. Therefore, a lifting lug structure is set near the node between the second and third transmission shafts, and is fixed to the frame crossbeam by a bracket. A lifting lug structure is also set between the fourth and fifth transmission shafts and near the node between the fifth and sixth transmission shafts, and is fixed to the frame crossbeam by a bracket. Lifting lug 49 as shown Fig.15 As shown, the middle of the lifting ear 49 has an axial hole for passing the transmission shaft, and a bushing is provided in the axial hole to prevent wear and deformation. The top of the lifting ear 49 is a flat surface for connecting the bracket 50. Fig.16 As shown, the bracket 50 is connected to the frame crossbeam. In this way, the transmission shaft is connected to the crossbeam by the lifting lug and the bracket, so that the transmission shaft has support and can realize long-distance transmission.

[0059] When the vehicle is driving under various operating conditions, when the transmission suspension cushion has an extreme deformation of 25mm in the X direction (suspension cushion is damaged), the deformation of the engine suspension cushion is 10mm, and the slip of drive shaft one and drive shaft two meets the requirements; drive shaft three and drive shaft four are defined as zero-slip drive shafts, and the transfer case suspension has an auxiliary support limiting structure, and no large deformation will occur in the X direction. When the transfer case suspension cushion is subjected to maximum compression deformation in the Y and Z directions, there is only a small length change of drive shaft three and drive shaft four (both within ±2mm), and the deformation of the suspension bushing of the drive shaft can be offset.

[0060] Through the above design, the present invention meets the long-axis transmission capacity of super-long and super-heavy vehicles (about 15 meters, 100T fully loaded). Its power transmission system has a simple structure, reliable functions, and convenient maintenance. It also meets the relevant standards, regulations and standard requirements of construction machinery and automobile vehicles as much as possible, making its design standardized.

Claims

1. A power transmission system for a large transport vehicle suitable for use in a desert environment, comprising an engine, a transmission, a transfer case and a transmission shaft, characterized in that: The engine is provided with a set of suspension structures on both sides of the front and rear ends, respectively, and the suspension structures include: a body connecting frame, a vehicle body connecting frame and a suspension cushion; the body connecting frame is connected to the lower part of the engine side in a tangential manner, and extends horizontally from the body, and is connected to the suspension cushion at the top of the horizontal extension position; one end of the vehicle body connecting frame is connected to the vehicle frame, and the other end is also extended horizontally, and is connected to the suspension cushion at the bottom of the horizontal extension position; The transmission is provided with a set of suspension structures at the front and rear ends, respectively, and the suspension structures include: a transmission mounting bracket 1, a transmission mounting bracket 2, a suspension cushion and a suspension mounting frame, wherein the transmission mounting bracket 1 and the transmission mounting bracket 2 are each in a semi-enclosed structure, enclosing the transmission body therein; the two ends of the transmission mounting bracket 1 extend toward the frame direction on both sides, respectively, and are connected to the suspension cushion, the suspension cushion and the suspension mounting frame are integrated, and the suspension mounting frame is fixed to the frame by bolts; The transfer case is provided with a set of suspension structures on both sides of the top, the suspension structures comprising: a suspension cushion, a cushion mounting bracket 1 and a cushion mounting bracket 2, the cushion mounting bracket 1 having one end fixed to the vehicle frame and the other end connected to the suspension cushion; the cushion mounting bracket 2 having one end fixed to the transfer case and the other end connected to the suspension cushion; The transfer case is provided with a group of auxiliary support structures on both sides of the bottom, respectively, and the auxiliary support structures include: an auxiliary support rod, a support rod mounting bracket 1, and a support rod mounting bracket 2, wherein the support rod mounting bracket 1 has one end fixed to the transfer case and the other end connected to one end of the auxiliary support rod through a rotating shaft; the support rod mounting bracket 2 has one end fixed to the vehicle frame and the other end connected to the other end of the auxiliary support rod through a rotating shaft; Each of the suspension cushions is made of rubber; There are 8 transmission shafts in total, wherein a transmission shaft 1 is arranged between the engine and the transmission, a transmission shaft 2 and a transmission shaft 3 are arranged in series between the transmission and the transfer case, a transmission shaft 4, a transmission shaft 5 and a transmission shaft 6 are arranged in series between the transfer case and the front axle, a transmission shaft 7 is arranged between the transfer case and the middle axle, and a transmission shaft 8 is arranged between the middle axle and the rear axle; A lifting lug is provided near any node of the serially connected transmission shafts, and the corresponding transmission shaft is passed through the lifting lug, and the lifting lug is fixed to the frame crossbeam through a bracket.

2. The power transmission system for large-scale transport vehicles suitable for desert environments according to claim 1 is characterized in that: In the engine suspension structure, the body connecting frame is formed by bending a steel plate into an inclined side and a horizontal side, the inclined side is tangentially welded to the lower side of the cylindrical engine body, the horizontal side extends horizontally out of the engine body, and the lower surface of the horizontal side is connected to the suspension cushion; The vehicle body connecting frame is a tripod structure formed by welding a back plate, a bottom plate and side plates. The back plate is connected to the frame beam by bolts, the bottom plate is connected to the bottom of the suspension cushion by bolts, and the side plates are connected between the back plate and the bottom plate.

3. The power transmission system for large-scale transport vehicles suitable for desert environments according to claim 2 is characterized in that: The bottom plate of the vehicle body connecting frame is connected to the suspension cushion in a slightly upward manner.

4. The power transmission system for large transport vehicles suitable for desert environments according to claim 1 is characterized in that: In the suspension structure of the transfer case, the cushion mounting bracket 1 and the cushion mounting bracket 2 both include a transverse plate, a vertical plate and a side connecting plate. The transverse plate and the vertical plate are vertically welded. The transverse plate is fastened to the suspension cushion by bolts, the vertical plate is fastened to the frame / transfer case by bolts, and the side connecting plate is connected between the transverse plate and the vertical plate.

5. The power transmission system for large-scale transport vehicles suitable for desert environments according to claim 1 is characterized in that: In the auxiliary support structure of the transfer case, The support rod mounting bracket 1 includes a right-angle plate, a backing plate, a coupling plate, and a pin; One side of the right angle plate is connected to the side of the transfer case by bolts, and the other side is vertically perpendicular to the side of the transfer case; the back plate is connected to the back of the other side of the right angle plate by bolts; two coupling plates are separately welded to the back plate, a pin is passed through between the two coupling plates, and one end of the auxiliary support rod is rotatably connected to the pin; The support rod mounting bracket 2 includes a crossbeam connecting plate, a coupling plate, and a pin shaft; The crossbeam connecting plate is connected to the bottom of the frame crossbeam by bolts, two coupling plates are separately welded to the bottom of the crossbeam connecting plate, a pin is passed between the two coupling plates, and the other end of the auxiliary support rod is rotatably connected to the pin.

6. The power transmission system for large-scale transport vehicles suitable for desert environments according to claim 1 is characterized in that: The lifting ear is provided with a bushing in the shaft-penetrating hole, and the top of the lifting ear is a plane connected to the bracket.

7. The power transmission system for large-scale transport vehicles suitable for desert environments according to claim 1 is characterized in that: The front input end and the rear output end of the transmission shaft 1 to the transmission shaft 8 are connected to the flange in the following manner: 。 8. The power transmission system for large transport vehicles suitable for desert environments according to claim 1 is characterized by: The transmission shafts 1 to 8 have the following relevant angles:

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