Drive system, frame assembly and construction vehicle

Abstract

The present invention provides a drive system, a frame assembly and an engineering vehicle. The drive system includes: a swing frame; a first drive axle connected to the swing frame; and a second drive axle connected to the swing frame, with the first drive axle and the second drive axle being relatively swingable with respect to each other. In the drive system provided by the present invention, the swing frame is connected to the first drive axle and the second drive axle. Since the first drive axle and the second drive axle are relatively swingable with respect to each other, when the construction road surface is uneven, the relative positions of the first drive axle and the second drive axle can be adjusted by using the swing frame, thereby enabling the engineering vehicle to maintain smoothness during construction. The structure is simple, the cost is low, it is convenient for maintenance and replacement, and it has high reliability, being suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and in particular, to a drive system, a frame assembly, and a construction vehicle. Background Art

[0002] Currently, construction vehicles such as motor graders, as a kind of multi-functional earthwork operation machinery, have functions such as earth pushing, soil loosening, high-speed snow shoveling, and fine leveling operations. Usually, as Figure 1 shown, the drive system 100' of the motor grader 300' includes a drive axle 102' located in the middle, balance boxes 104' (or called sprocket boxes) located on both sides of the drive axle, and four wheel hubs 106' connected to the balance boxes 104'. Among them, the balance boxes 104' on both sides can swing within a certain range relative to the drive axle 102' in the middle. The power for the wheels to work is transmitted from the rear axle to the four wheel hubs 106' through a chain. Since chain drive requires lubrication, the entire balance box 104' needs to be filled with lubricating oil. However, due to the uneven construction road surface of the motor grader 300', the balance box 104' needs to swing relative to the drive axle 102' to maintain smooth construction. Due to frequent swinging, the connection between the balance box 104' and the drive axle 102' is prone to wear and oil leakage, and maintenance and replacement are relatively troublesome. Summary of the Invention

[0003] The present invention aims to at least solve or improve one of the technical problems existing in the prior art or related technologies.

[0004] To this end, in the first aspect of the present invention, a drive system is provided.

[0005] In the second aspect of the present invention, a frame assembly is provided.

[0006] In the third aspect of the present invention, a construction vehicle is provided.

[0007] In view of this, according to the first aspect of the present invention, a drive system is provided, including: a swing frame; a first drive axle connected to the swing frame; and a second drive axle connected to the swing frame, wherein the first drive axle and the second drive axle can swing relative to each other.

[0008] The drive system provided by the present invention is, specifically, the drive system of an engineering vehicle, which can be a motor grader. The motor grader has functions such as earthmoving, soil loosening, high-speed snow shoveling, and fine leveling operations. The drive system includes a swing frame, a first drive axle, and a second drive axle. Among them, both the first drive axle and the second drive axle are connected to the swing frame, and the first drive axle and the second drive axle are distributed along the first direction of the vehicle frame body. Specifically, the first direction is the length direction of the vehicle frame body, that is, the direction from the head to the tail of the engineering vehicle. Specifically, the first drive axle and the second drive axle are respectively the middle axle and the rear axle of the engineering vehicle. The first drive axle transmits power to the wheel hubs of the two middle wheels to drive the middle wheels to run, and the second drive axle transmits power to the wheel hubs of the two wheels located behind the vehicle frame body to drive the rear wheels to run. By the relative swing between the first drive axle and the second drive axle, when the construction road surface is uneven, the relative position of the first drive axle and the second drive axle can be adjusted by using the swing frame, thereby maintaining the stability of the engineering vehicle during construction. The structure is simple, the cost is low. Compared with the related technology where the balance box swings relative to the drive axle to adapt to the uneven construction road surface, the balance box structure is cancelled, which is convenient for maintenance and replacement, and has high reliability, and is suitable for popularization and application.

[0009] In addition, the engineering vehicle in the above technical solution provided by the present invention may further have the following additional technical features:

[0010] In the above technical solution, further, it further includes: a connecting member; the swing frame is provided with an installation part, the installation part is located between the first drive axle and the second drive axle, and the connecting member is rotationally connected to the installation part.

[0011] In this technical solution, the drive system further includes a connecting member. The swing frame is provided with an installation part. By rotationally connecting the connecting member with the installation part, a rotating pair is formed between the installation part of the swing frame and the connecting member, so that the swing frame can rotate relative to the connecting member within a certain angle. By the installation part being located between the first drive axle and the second drive axle, when the construction road surface is uneven, the relative swing between the first drive axle and the second drive axle can be driven by the rotation of the swing frame relative to the connecting member, thereby adjusting the positional relationship between the first drive axle and the second drive axle, enabling the middle wheels connected to the first drive axle and the rear wheels connected to the second drive axle to adapt to the uneven construction road surface, so as to maintain the stability of the engineering vehicle during construction and improve the working efficiency and reliability of the product.

[0012] In any of the above technical solutions, further, the swing frame further includes: a first support assembly, the first support assembly includes two first support members arranged oppositely along a first direction, one of the two first support members is connected to the first drive axle, and the other is connected to the second drive axle; a second support assembly, the second support assembly connects the two first support members, the installation part is a first connection hole, and the second support assembly is provided with a first connection hole; wherein, a connecting member passes through the first connection hole and is connected to the second support assembly.

[0013] In this technical solution, the swing frame further includes a first support assembly and a second support assembly. The first support assembly includes two first support members arranged oppositely along a first direction, that is, the two first support members are spaced apart along the length direction of the vehicle frame body. Among them, one first support member is connected to the first drive axle, and the other first support member is connected to the second drive axle. The second support assembly connects the two first support assemblies, that is, the second support assembly and the two drive axles are connected through the first support assembly, and a first connection hole is provided in the second support assembly. Among them, the first connection hole is the installation part. The connecting member passes through the first connection hole and is connected to the second support assembly, thereby realizing the rotational connection between the connecting member and the swing frame, that is, the swing frame connected to the first drive axle and the second drive axle is connected to other components (such as the vehicle frame body) through the connecting member, with a simple structure, low cost, and high reliability.

[0014] In any of the above technical solutions, further, the second support assembly includes one or more second support members, and the plurality of second support members are spaced apart perpendicular to the first direction. Any one of the second support members is connected to the two first support members, and any one of the second support members is provided with a first connection hole.

[0015] In this technical solution, on the one hand, the second support assembly includes one second support member; on the other hand, the second support assembly includes a plurality of second support members, and the plurality of second support members are spaced apart perpendicular to the first direction. Among them, any one of the second support members is connected to the two first support members, and any one of the second support members is provided with a first connection hole, so that one second support member or a plurality of second support members can be connected through the connecting member, thereby realizing the swing connection between the swing frame and other components (such as the vehicle frame body).

[0016] In any of the above technical solutions, further, the number of the connecting members is one, and one connecting member is connected to all the first connection holes.

[0017] In this technical solution, the number of connecting members is one, and all the first connecting holes are connected through one connecting member, thereby enabling the rotational connection between the swing frame and the connecting member. It can be understood that when the swing frame is connected to the vehicle frame body through the connecting member, the vehicle frame body is provided with mounting holes, and the connecting member sequentially connects the mounting holes on one side wall of the vehicle frame body, all the first connecting holes, and the mounting holes on the other side wall of the vehicle frame body, thereby realizing the swing connection between the swing frame and the vehicle frame body, with a simple structure and high reliability.

[0018] In any of the above technical solutions, further, the number of the plurality of second support members is two, and the number of the connecting members is two. Any one of the connecting members is connected to one first connecting hole.

[0019] In this technical solution, the number of the second support members is two, and the number of the connecting members is two. Among them, one connecting member is connected to the first connecting hole of one second support member, and the other connecting member is connected to the first connecting hole of the other second support member, so that the swing frame is rotationally connected to the connecting member through the two connecting members respectively connected to one second support member. Specifically, when the swing frame is connected to the vehicle frame body, the two second support members and the vehicle frame body are connected through two short connecting members to realize the swing connection between the swing frame and the vehicle frame body, with a simple structure and high reliability. At the same time, it is beneficial to reduce the use of connecting member materials, thereby reducing the manufacturing cost.

[0020] In any of the above technical solutions, further, the swing frame further includes: a third support assembly, and the third support assembly includes two third support members oppositely arranged along a direction perpendicular to the first direction. Any one of the third support members connects the first drive axle and the second drive axle. The mounting portion is a second connecting hole, and any one of the third support members is provided with a second connecting hole; the connecting member passes through the second connecting hole and is connected to the third support member.

[0021] In this technical solution, the swing frame includes a connecting member and a third support assembly. The third support assembly includes two third support members oppositely arranged along a direction perpendicular to the first direction. Any one of the third support members connects the first drive axle and the second drive axle, so that the first drive axle and the second drive axle are reliably connected through the two third support members. Any one of the third support members is provided with a second connecting hole, where the second connecting hole is the mounting portion, and the connecting member passes through the second connecting hole to connect the third support member, realizing the rotational connection between the swing frame and the connecting member, with a simple structure, low cost, and high reliability. That is, the swing frame with this structure is an approximately H-shaped swing frame.

[0022] In any of the above technical solutions, further, the connecting member is in a rod-shaped structure.

[0023] In this technical solution, the connecting member is a rod-shaped structure, and the mounting portion is a curved hole, that is, the first connecting hole or the second connecting hole is a curved hole. When the construction road surface is uneven, the rod-shaped connecting member rotates along the curved surface within the mounting portion, which is beneficial to improving the flexibility and reliability of the swing frame rotating relative to other components (such as the vehicle frame body). Furthermore, it can reasonably adjust the relative positions of the first drive axle and the second drive axle under complex construction road surfaces, improving the stability and reliability of the engineering vehicle during operation.

[0024] In any of the above technical solutions, further, the drive system further includes: an engine; a gearbox, and the gearbox includes: an input end connected to the engine; a first output shaft connected to the first drive axle; and a second output shaft connected to the second drive axle.

[0025] In this technical solution, the drive system further includes an engine and a gearbox, and the engine provides power for the first drive axle and the second drive axle. Specifically, the engine is connected to the input end of the gearbox, the first output shaft of the gearbox is connected to the first drive axle, and the second output shaft of the gearbox is connected to the second drive axle. The power provided by the engine is transmitted to the first drive axle through the first output shaft after being speed-changed by the gearbox to drive the wheels located in the middle of the vehicle frame body to run. At the same time, it is transmitted to the second drive axle through the second output shaft to drive the vehicle located behind the vehicle frame body to run, thereby realizing the driving of the engineering vehicle.

[0026] According to the second aspect of the present invention, there is provided a vehicle frame assembly, including: a vehicle frame body; and a drive system according to any of the technical solutions in the first aspect above, wherein the swing frame is connected to the vehicle frame body and is swingable relative to the vehicle frame body.

[0027] The vehicle frame assembly provided by the present invention includes a vehicle frame body and a drive system according to any of the technical solutions in the first aspect above. The swing frame is connected to the vehicle frame body and is swingable relative to the vehicle frame body. Since the vehicle frame assembly includes the drive system according to any of the above technical solutions, it has all the beneficial effects of this drive system, which will not be elaborated here.

[0028] Specifically, mounting holes are provided on the vehicle frame body. The connecting member sequentially connects the mounting holes on one side wall of the vehicle frame body, all the mounting portions, and the mounting holes on the other side wall of the vehicle frame body, thereby realizing the swing connection between the swing frame and the vehicle frame body, with a simple structure and high reliability.

[0029] According to the third aspect of the present invention, there is provided an engineering vehicle, including: a drive system according to any of the technical solutions in the first aspect, or a vehicle frame assembly according to any of the technical solutions in the second aspect.

[0030] The construction vehicle provided by the present invention includes the drive system of any technical solution in the first aspect or the frame assembly of any technical solution in the second aspect. Since the construction vehicle includes the drive system of any technical solution in the first aspect or the frame assembly of any technical solution in the second aspect, it has all the beneficial effects of the drive system or the frame assembly, which will not be elaborated here. Further, the construction vehicle further includes: an axle, connected to the frame body and located on the same side of the first drive axle and the second drive axle.

[0031] In this technical solution, the construction vehicle further includes an axle connected to the frame body. The axle is located on the same side of the first drive axle and the second drive axle, that is, the axle is a front axle located in front of the frame body. Specifically, the front axle is used to adjust the running direction of the construction vehicle, provide power for the first drive axle and the second drive axle through the driving part, and cooperate with the axle to enable the construction vehicle to drive safely and reliably. Specifically, the axle can be a drive axle or a non-drive axle. When the axle is a drive axle, the axle includes a hydraulic motor, and the hydraulic motor is connected to the engine of the drive system through a hydraulic pump. The power of the engine is transmitted to the hydraulic motor through the hydraulic pump and directly transmitted to the wheels by the hydraulic motor. That is to say, when the axle is a drive axle, the structure of the axle is different from that of the first drive axle and the second drive axle.

[0032] The additional aspects and advantages of the present invention will become apparent in the following description section or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 The schematic structural diagram of a construction vehicle provided by an embodiment in the related art is shown;

[0035] Figure 2 The schematic structural diagram of a vehicle provided by an embodiment according to the present invention is shown;

[0036] Figure 3 The schematic structural diagram of the drive system provided by the first embodiment according to the present invention is shown;

[0037] Figure 4 Shows Figure 3 The schematic structural diagram of a perspective of the shown embodiment;

[0038] Figure 5 Shows Figure 3 The partial schematic structural diagram of the swing frame of the shown embodiment;

[0039] Figure 6The structural schematic diagram of the drive system provided according to the second embodiment of the present invention is shown.

[0040] Among them, Figure 1 The corresponding relationship between the reference numerals and the component names in the figure is as follows:

[0041] 100’ drive system, 102’ drive axle, 104’ balance box, 106’ wheel hub, 300’ grader.

[0042] Figures 2 to 6 The corresponding relationship between the reference numerals and the component names in the figure is as follows:

[0043] 100 drive system, 110 swing frame, 112 connecting member, 114 first support assembly, 1142 first support member, 116 second support assembly, 1162 second support member, 1164 first connection hole, 118 third support assembly, 1182 third support member, 120 first drive axle, 130 second drive axle, 140 axle, 200 frame assembly, 210 frame body, 300 construction vehicle. Detailed implementation manners

[0044] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0045] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0046] Next, refer to Figures 2 to 6 to describe the drive system 100, the frame assembly 200 and the construction vehicle 300 according to some embodiments of the present invention.

[0047] Embodiment 1:

[0048] As Figures 2 to 6 shown, according to the first aspect of the present invention, a drive system 100 is provided. The drive system 100 is the drive system of the construction vehicle 300. Specifically, the construction vehicle 300 is a grader, which has functions such as earthmoving, soil loosening, high-speed snow shoveling, and fine leveling operations.

[0049] As Figure 2As shown, the drive system 100 includes a swing frame 110, a first drive axle 120, and a second drive axle 130. Among them, both the first drive axle 120 and the second drive axle 130 are connected to the swing frame 110. The first drive axle 120 and the second drive axle 130 are distributed along the first direction of the vehicle frame body 210. Specifically, the first direction is the length direction of the vehicle frame body 210, that is, the direction from the head to the tail of the engineering vehicle 300. For example, Figure 2 the direction indicated by the arrow A in Figure 2 and Figure 3 is the first direction. Specifically, the first drive axle 120 and the second drive axle 130 are respectively the middle axle and the rear axle of the engineering vehicle 300. The first drive axle 120 transmits power to the wheel hubs of the two middle wheels to drive the middle wheels to run, and the second drive axle 130 transmits power to the wheel hubs of the two wheels behind the vehicle frame body 210 to drive the rear wheels to run. As shown in

[0050] By connecting the swing frame 110 to the first drive axle 120 and the second drive axle 130, the first drive axle 120 and the second drive axle 130 can swing relative to each other. When the construction road surface is uneven, the relative position of the first drive axle 120 and the second drive axle 130 can be adjusted by using the swing frame 110, thereby maintaining the stability of the construction of the engineering vehicle 300. The structure is simple and the cost is low. Compared with the related technology in which the balance box swings relative to the drive axle to adapt to the uneven construction road surface, the balance box structure is cancelled, which is convenient for maintenance and replacement, and has high reliability and low cost, and is suitable for popularization and application.

[0051] Embodiment 2:

[0052] As shown in Figures 2 to 6As shown, in one embodiment of the present invention, on the basis of the above-mentioned Embodiment 1, further, the swing frame 110 further includes: a first support assembly 114, the first support assembly 114 includes two first support members 1142 arranged oppositely along a first direction, one of the two first support members 1142 is connected to the first drive axle 120, and the other is connected to the second drive axle 130; a second support assembly 116, the second support assembly 116 connects the two first support members 1142, the installation part is a first connection hole 1164, and the second support assembly 116 is provided with the first connection hole 1164; wherein, the connecting member 112 passes through the first connection hole 1164 and is connected to the second support assembly 116.

[0053] In this embodiment, as Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the swing frame 110 further includes a first support assembly 114 and a second support assembly 116. The first support assembly 114 includes two first support members 1142 arranged oppositely along a first direction, that is, the two first support members 1142 are spaced apart along the length direction of the vehicle frame body 210. Among them, one first support member 1142 is connected to the first drive axle 120, and the other first support member 1142 is connected to the second drive axle 130. The second support assembly 116 connects the two first support assemblies 114, that is, the second support assembly 116 and the two drive axles are connected through the first support assembly 114, and a first connection hole 1164 is provided in the second support assembly 116. Among them, the first connection hole is the installation part, and the connecting member 112 passes through the first connection hole 1164 and is connected to the second support assembly 116, thereby realizing the rotational connection between the connecting member 112 and the swing frame 110, that is, the swing frame 110 connected to the first drive axle 120 and the second drive axle 130 is connected to other components (the vehicle frame body 210) through the connecting member 112, with a simple structure, low cost, and high reliability.

[0054] Further, the second support assembly 116 includes one or more second support members 1162, and the plurality of second support members 1162 are spaced apart perpendicular to the first direction. Any one of the second support members 1162 is connected to the two first support members 1142, and any one of the second support members 1162 is provided with the first connection hole 1164.

[0055] Specifically, on the one hand, the second support assembly 116 includes a second support member 1162; on the other hand, the second support assembly 116 includes a plurality of second support members 1162, and the plurality of second support members 1162 are spaced apart perpendicular to the first direction. Among them, any one of the second support members 1162 is connected to two first support members 1142, and any one of the second support members 1162 is provided with a first connection hole 1164, so that one second support member 1162 or a plurality of second support members 1162 can be connected through the connecting member 112, thereby realizing the swing connection of the swing frame 110 with other components (such as the vehicle frame body 210).

[0056] Furthermore, different numbers of the second support members 1162 can meet the requirements of different structures and different positions of the second support members 1162, expanding the scope of use of the product.

[0057] In the above embodiment, further, the number of the connecting members 112 is one, and all the first connection holes 1164 are connected through one connecting member 112, thereby realizing the rotational connection between the swing frame 110 and the connecting member 112. It can be understood that when the swing frame 110 is connected to the vehicle frame body 210 through the connecting member 112, the vehicle frame body 210 is provided with mounting holes, and the connecting member 112 sequentially connects the mounting holes on one side wall of the vehicle frame body 210, all the first connection holes 1164, and the mounting holes on the other side wall of the vehicle frame body 210, thereby realizing the swing connection between the swing frame 110 and the vehicle frame body 210, with a simple structure and high reliability.

[0058] Specifically, when the number of the connecting members 112 is one, the number of the second support members 1162 can be one, two, three, or other numbers. When the number of the second support members 1162 is two, the two second support members 1162 and the two first support members 1142 form an approximately rectangular frame, and one connecting member 112 passes through the two second support members 1162 and is connected to the vehicle frame body 210, that is, the two second support members 1162 and the vehicle frame body 210 are connected through a longer connecting member 112 to realize the swing connection between the swing frame 110 and the vehicle frame body 210.

[0059] In the above embodiments, further, the number of the second support members 1162 is two, and the number of the connecting members 112 is two. Among them, one connecting member 112 is connected to the first connection hole 1164 of one second support member 1162, and the other connecting member 112 is connected to the first connection hole 1164 of the other second support member 1162. Thus, the swing frame 110 is rotationally connected to the connecting member 112 by respectively connecting the two connecting members 112 to one second support member 1162. Specifically, when the swing frame 110 is connected to the vehicle frame body 210, the two second support members 1162 and the vehicle frame body 210 are connected by two short connecting members 112 to realize the swing connection between the swing frame 110 and the vehicle frame body 210. The structure is simple and has high reliability. At the same time, it is beneficial to reduce the use of the material of the connecting member 112, thereby reducing the manufacturing cost.

[0060] Further, the mounting holes on one side wall of the vehicle frame body 210 are respectively connected to one second support member 1162 by two connecting members 112. When one of the connecting members 112 fails, only one of the connecting members 112 needs to be replaced, which is beneficial to reducing the maintenance cost.

[0061] Embodiment 3:

[0062] As Figure 2 and Figure 6 shown, in one embodiment of the present invention, on the basis of the above Embodiment 1, further, the swing frame 110 further includes: a third support assembly 118. The third support assembly 118 includes two third support members 1182 oppositely arranged along a direction perpendicular to the first direction. Any one of the third support members 1182 connects the first drive axle 120 and the second drive axle 130. The mounting portion is a second connection hole, and any one of the third support members 1182 is provided with a second connection hole; the connecting member 112 passes through the second connection hole and is connected to the third support member 1182.

[0063] In this embodiment, as Figure 6 shown, the swing frame 110 includes a connecting member 112 and a third support assembly 118. The third support assembly 118 includes two third support members 1182 oppositely arranged along a direction perpendicular to the first direction. By connecting the first drive axle 120 and the second drive axle 130 through any one of the third support members 1182, the first drive axle 120 and the second drive axle 130 are reliably connected by the two third support members 1182. Any one of the third support members 1182 is provided with a second connection hole. Among them, the second connection hole is the mounting portion, and the connecting member 112 passes through the second connection hole to connect the third support member 1182, realizing the rotational connection between the swing frame 110 and the connecting member 112. The structure is simple, the cost is low, and the reliability is high. That is, the swing frame 110 with this structure is an approximately H-shaped swing frame.

[0064] Example 4:

[0065] As Figures 2 to 6 shown, in one embodiment of the present invention, on the basis of any one of the above-mentioned Embodiments 1 to 3, further, the connecting member 112 is a rod-shaped structure.

[0066] In this embodiment, as Figure 2 and Figure 6 shown, the connecting member 112 is a rod-shaped structure, and the mounting portion is a curved hole, that is, the first connecting hole or the second connecting hole is a curved hole, so that when the construction road surface is uneven, the rod-shaped connecting member 112 rotates along the curved surface in the mounting portion, which is beneficial to improving the flexibility and reliability of the swing frame 110 rotating relative to other components (such as the vehicle frame body 210). Furthermore, the relative positions of the first drive axle 120 and the second drive axle 130 can be reasonably adjusted under a complex construction road surface, and the working stability and reliability of the engineering vehicle 300 are improved.

[0067] Specifically, the connecting member 112 is a connecting shaft, the mounting hole is a circular hole, and the mounting portion is a through hole with a diameter larger than the diameter of the mounting shaft, that is, the connecting member 112 can rotate flexibly in the through hole, and the connecting member 112 and the through hole form a rotating pair, so that the swing frame 110 can swing relative to the vehicle frame body 210.

[0068] Example 5:

[0069] As Figures 2 to 6 shown, in one embodiment of the present invention, on the basis of the above-mentioned Embodiments 1 to 4, further, the drive system 100 further includes: an engine; a gearbox, and the gearbox includes: an input end connected to the engine; a first output shaft connected to the first drive axle 120; and a second output shaft connected to the second drive axle 130.

[0070] In this embodiment, the drive system 100 further includes an engine and a gearbox, and the engine provides power for the first drive axle 120 and the second drive axle 130. Specifically, the engine is connected to the input end of the gearbox, the first output shaft of the gearbox is connected to the first drive axle 120, and the second output shaft of the gearbox is connected to the second drive axle 130, so that the power provided by the engine is transmitted to the first drive axle 120 through the first output shaft after being speeded up by the gearbox to drive the wheels located in the middle of the vehicle frame body 210 to run. At the same time, it is transmitted to the second drive axle 130 through the second output shaft to drive the vehicle located behind the vehicle frame body 210 to run, thereby realizing the driving of the engineering vehicle 300.

[0071] Example 6:

[0072] As Figures 2 to 6As shown in the figure, according to the second aspect of the present invention, a frame assembly 200 is provided, which includes a frame body 210 and the drive system 100 of any embodiment of the above first aspect. The swing frame 110 is connected to the frame body 210 and is swingable relative to the frame body 210. Since the frame assembly 200 includes the drive system 100 of any of the above embodiments, it has all the beneficial effects of the drive system 100, which will not be elaborated here.

[0073] Specifically, mounting holes are provided on the frame body 210. The connecting member 112 sequentially connects the mounting holes on one side wall of the frame body, all the mounting parts, and the mounting holes on the other side wall of the frame body, thereby realizing the swing connection between the swing frame 110 and the frame body 210. The structure is simple and the reliability is high.

[0074] Embodiment 7:

[0075] As Figures 2 to 6 shown in the figure, according to the third aspect of the present invention, an engineering vehicle 300 is provided, which includes the drive system 100 of any embodiment of the first aspect or the frame assembly 200 of any embodiment of the second aspect. Since the engineering vehicle 300 includes the drive system 100 of any embodiment of the first aspect or the frame assembly 200 of any embodiment of the second aspect, it has all the beneficial effects of the drive system 100 or the frame assembly 200, which will not be elaborated here. Further, as Figure 2 shown in the figure, the engineering vehicle 300 further includes an axle 140 connected to the frame body 210. The axle 140 is located on the same side of the first drive axle 120 and the second drive axle 130, that is, the axle 140 is a front axle located in front of the frame body 210. Specifically, the front axle is used to adjust the running direction of the engineering vehicle 300, provide power for the first drive axle 120 and the second drive axle 130 through the drive part, and cooperate with the axle 140, so that the engineering vehicle 300 can run safely and reliably. Specifically, the axle 140 can be a drive axle or a non-drive axle. When the axle 140 is a drive axle, the axle 140 includes a hydraulic motor, and the hydraulic motor is connected to the engine of the drive system 100 through a hydraulic pump. The power of the engine is transmitted to the hydraulic motor through the hydraulic pump and directly transmitted to the wheels by the hydraulic motor. That is to say, when the axle 140 is a drive axle, the structure of the axle 140 is different from that of the first drive axle 120 and the second drive axle 130. Specific embodiments

[0077] As Figures 2 to 6As shown in the figure, the construction vehicle 300 is a motor grader. As a multi-functional earthwork operation machine, the motor grader has functions such as earth pushing, soil loosening, high-speed snow shoveling, and precision leveling operations. The construction vehicle 300 includes a frame body 210 and a drive system 100. The drive system 100 includes a swing frame 110, a first drive axle 120, and a second drive axle 130, that is, two drive axles are used to drive the four drive wheels of the motor grader. The first drive axle 120 and the second drive axle 130 are installed on the swing frame 110, and the first drive axle 120 and the second drive axle 130 are distributed along the length direction of the frame body 210. The length direction of the frame body 210 is the direction from the head to the tail of the construction vehicle 300, that is, the first drive axle 120 and the second drive axle 130 are the middle axle and the rear axle of the motor grader respectively. Then, the swing frame 110 is installed on the frame body 210 through a connecting member 112, and the connecting member 112 and the installation part of the swing frame 110 form a rotating pair, so that the swing frame 110 can drive the relative swing between the first drive axle 120 and the second drive axle 130 through this rotating pair, that is, the first drive axle 120 and the second drive axle 130 swing relative to the frame body 210. The power is transmitted from the engine to the gearbox, and the gearbox transmits the power to the first drive axle 120 and the second drive axle 130 from the front and back directions through the first output shaft and the second output shaft to achieve power transmission.

[0078] When the motor grader encounters a rough road surface, the swing frame 110 can swing within a certain range according to the actual slope to ensure the smooth driving of the motor grader during construction.

[0079] Specifically, in one embodiment, the swing frame 110 includes a connecting member 112, two first support members 1142, and two second support members 1162. The two first support members 1142 are spaced apart along the length direction of the frame body 210, and the two second support members 1162 are spaced apart along the direction perpendicular to the length direction of the frame body 210. Among them, one first support member 1142 is connected to the first drive axle 120, and the other first support member 1142 is connected to the second drive axle 130. Any one of the second support members 1162 connects the two first support members 1142, that is, the two first support members 1142 and the two second support members 1162 enclose an approximately rectangular frame. The second support member 1162 is provided with a first connection hole 1164, and installation holes are provided on the opposite side walls of the frame body 210. The connecting member 112 passes through the first connection hole 1164 and the installation hole to connect the swing frame 110 and the frame body 210, and enables the swing frame 110 to be swingable relative to the frame body 210 within a certain range.

[0080] Specifically, on the one hand, the number of the connecting members 112 is one. One connecting member 112 penetrates through two mounting holes and two first connecting holes 1164, that is, two second support members 1162 and the vehicle frame body 210 are connected by one relatively long connecting member 112, so as to realize the swing connection between the swing frame 110 and the vehicle frame body 210.

[0081] On the other hand, the number of the connecting members 112 is two. Each connecting member 112 connects one mounting hole and one first connecting hole 1164, that is, two second support members 1162 and the vehicle frame body 210 are connected by two relatively short connecting members 112, so as to realize the swing connection between the swing frame 110 and the vehicle frame body 210.

[0082] In another embodiment, the swing frame 110 includes a connecting member 112 and two third support members 1182. The two third support members 1182 are oppositely arranged along a direction perpendicular to the first direction. Any one of the third support members 1182 connects the first drive axle 120 and the second drive axle 130. Thus, the first drive axle 120 and the second drive axle 130 are reliably connected by two third support assemblies 118. A second connecting hole is provided in any one of the third support members 1182. The connecting member 112 passes through the second connecting hole and the mounting hole to realize the swing connection between the swing frame 110 and the vehicle frame body 210. The structure is simple, the cost is relatively low, and the reliability is relatively high.

[0083] For the drive system 100 provided by the present invention, the swing frame 110 has a simple structure, high reliability, and low cost. Even if two drive axles are used, its economy is better than that of the drive system of a motor grader including a balance box in the related art. At the same time, the drive system 100 provided by the present invention cancels the balance box structure in the related art, avoiding the problems that the connection between the balance box and the drive axle is prone to wear and oil leakage due to frequent swinging, and the maintenance and replacement are relatively troublesome. Furthermore, the maintenance and replacement are convenient, and it is suitable for popularization and application.

[0084] In the description of the present invention, the term "a plurality of" means two or more unless otherwise clearly defined. The terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 therefore should not be construed as a limitation to the present invention; the terms "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0085] In the description of the present invention, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0086] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drive system, characterized in that, it includes: a swing frame; a first drive axle, connected to the swing frame; a second drive axle, connected to the swing frame; the first drive axle and the second drive axle can swing relative to each other; a connecting member; the swing frame is provided with a mounting portion, the mounting portion is located between the first drive axle and the second drive axle, and the connecting member is rotatably connected to the mounting portion; the connecting member is a connecting shaft, the mounting portion is a circular hole, and the mounting portion is a through hole with a diameter larger than the diameter of the connecting shaft; the swing frame further includes: a first support assembly, the first support assembly includes two first support members arranged oppositely along a first direction, one of the two first support members is connected to the first drive axle, and the other is connected to the second drive axle; a second support assembly, the second support assembly connects the two first support members, the mounting portion is a first connection hole, and the second support assembly is provided with the first connection hole; wherein, the connecting member passes through the first connection hole and is connected to the second support assembly; the second support assembly includes one or more second support members, the plurality of second support members are spaced apart perpendicular to the first direction, any one of the second support members is connected to the two first support members, and any one of the second support members is provided with the first connection hole; the number of the plurality of second support members is two, the number of the connecting members is two, and any one of the connecting members is connected to one of the first connection holes; one of the connecting members is connected to the first connection hole of one of the second support members, and the other connecting member is connected to the first connection hole of the other second support member.

2. The drive system according to claim 1, further including: an engine; a gearbox, the gearbox includes: an input end, connected to the engine; a first output shaft, connected to the first drive axle; a second output shaft, connected to the second drive axle.

3. A frame assembly, characterized in that, it includes: a frame body; and the drive system according to claim 1 or 2, the swing frame is connected to the frame body and can swing relative to the frame body.

4. An engineering vehicle, characterized in that, it includes: the drive system according to claim 1 or 2; or the frame assembly according to claim 3.

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