WO2023071247A1

WO2023071247A1 - Wide-body dump truck

Info

Publication number: WO2023071247A1
Application number: PCT/CN2022/101134
Authority: WO
Inventors: 那明赫; 吴喜柱; 黄志怀
Original assignee: 三一重型装备有限公司
Priority date: 2021-10-26
Filing date: 2022-06-24
Publication date: 2023-05-04
Also published as: CN216101740U

Abstract

A wide-body dump truck (100), comprising: a frame assembly (110); and a cab assembly (120), which is mounted on the frame assembly (110) and comprises a cab body (121) located on the right side in the driving direction of the wide-body dump truck (100); and a container assembly (130), which is mounted on the frame assembly (110) and located behind the cab assembly (120), the container assembly (130) comprising a box body (131) and a brim (132), and the brim (132) extending in a direction from the box body (131) to the cab assembly (120), wherein the projection of the cab assembly (120) on a horizontal plane is located inside of the projection of the brim (132) on the horizontal plane.

Description

wide body dump truck

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202122590804X and the title of the invention "Wide Body Dump Truck" filed on October 26, 2021, which is incorporated herein by reference in its entirety.

technical field

The present application relates to the technical field of dump truck equipment, in particular to a wide-body dump truck.

Background technique

At present, road-type dump trucks used in ports, terminals or mines are restricted by road regulations and vehicle standards. They are generally left-hand drive, and their use is limited. They cannot meet the market needs of countries and regions with different driving requirements in the world. At the same time, the existing wide-body dump trucks generally use short-brimmed cargo boxes, and the top of the cab cannot be fully protected. Compartment damage, and even cause driver casualties.

Contents of the invention

In view of this, the application provides a wide-body dump truck, which can realize right-hand drive and meet the market demand in countries and regions that require right-hand drive in the world. Improve the safety of the cab components.

According to the embodiment of the first aspect of the present application, a wide-body dump truck is provided, including: a frame assembly; a cab assembly, installed on the frame assembly, including a cab body located on the right side of the wide-body dump truck in the direction of travel The cargo box assembly is installed on the vehicle frame assembly and is located at the rear of the cab assembly. The cargo box assembly includes a box body and a hat brim, and the hat brim extends from the box body to the direction of the cab assembly; wherein, the projection of the cab assembly on the horizontal plane is located at The interior of the projection of the brim on the horizontal plane.

Further, the cab assembly also includes: a suspension installation frame, which is arranged on the rear side of the cab body and connected with the vehicle frame assembly, and the suspension installation frame includes a spring damping structure.

Further, there are two suspension mounting brackets, distributed at intervals along the left and right directions.

Further, the cab assembly also includes: a cab platform, connected to the frame assembly, located on the left side of the cab body, used to place the air filter, the cab platform and the cab body are oppositely provided with wheel eyebrows; two The fenders are respectively connected with the platform of the cab and the body of the cab, and are located on both sides of the vehicle frame assembly. The shape of the fenders matches the shape of the wheel arches.

Further, the wide-body dump truck also includes: an axle system, and the axle system includes a front axle assembly, a middle axle assembly and a rear axle assembly installed on the vehicle frame assembly, and the front axle assembly, the middle axle assembly and the rear axle assembly all include The vehicle axle body and the motion guiding mechanism, and the motion guiding mechanism connects the vehicle axle body and the vehicle frame assembly.

Further, the motion guiding mechanism includes: a connecting rod whose two ends are respectively hinged to the axle body and the frame assembly, the connecting rods include four first connecting rods extending in the front-rear direction, and one second connecting rod extending in the left-right direction .

Further, the frame assembly is a weldment, including a frame longitudinal beam, and a first crossbeam, a forward push crossbeam, a second crossbeam, a lifting crossbeam, and a balance beam welded on the frame longitudinal beam at intervals from front to rear, The forward push crossbeam is hinged with the connecting rod of the front axle assembly, the second crossbeam is hinged with the connecting rods of the middle axle assembly and the connecting rod of the rear axle assembly, and the lifting beam is connected with the hydraulic lifting system of the container assembly.

Further, the wide-body dump truck also includes: an oil-pneumatic suspension system, and the middle axle assembly and the rear axle assembly are installed on the vehicle frame through the oil-pneumatic suspension system.

Further, the oil-pneumatic suspension system includes: middle axle oil-pneumatic suspension cylinder, rear axle oil-pneumatic suspension cylinder, oil pipe, accumulator, the axle body includes middle axle body and rear axle body, and the two ends of the middle axle oil-pneumatic suspension cylinder are respectively connected to the vehicle frame The longitudinal beam and the middle axle body, the two ends of the oil-pneumatic suspension cylinder of the rear axle are respectively connected to the frame longitudinal beam and the rear axle body, the accumulator is installed on the balance beam, the oil-pneumatic suspension cylinder of the middle axle and the accumulator are connected through the oil pipe, and the oil-pneumatic suspension of the rear axle The cylinder and the accumulator are communicated through oil pipes.

Further, the rated load of the front axle assembly is 23 tons to 27 tons; the rated load of the middle axle assembly is 38 tons to 42 tons; the rated load of the rear axle assembly is 38 tons to 42 tons.

The wide-body dump truck provided in the embodiment of the present application includes a frame assembly, a cab assembly and a container assembly, wherein the cab assembly is installed on the frame assembly, and includes a cab body located on the right side of the wide-body dump truck in the direction of travel , realize the right-hand drive of the wide-body dump truck, and then meet the market demand of countries and regions that require right-hand drive in the world, make the wide-body dump truck meet the export demand, and expand the scope of use of the product.

The cargo box assembly is installed on the frame assembly and is located behind the cab assembly. The cargo box assembly includes a box body and a brim. The brim extends from the box body to the direction of the cab assembly. The projection of the cab assembly on the horizontal plane is located at the position of the brim on the horizontal plane Projected interior, resulting in a longer brim that completely covers the roof of the cab assembly. With such a setting, when the wide-body dump truck is loading, the falling rocks will be blocked by the brim of the container assembly first, preventing the cab components from being directly hit by the falling rocks, thus protecting the personal safety of the driver. It has a good protection effect on other parts of the cab assembly, reduces the failure rate of the product, and improves the service life of the product.

The above description is only an overview of the technical solution of the present application. In order to better understand the technical means of the present application, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable , the following specifically cites the specific implementation manner of the present application.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the application. Also throughout the drawings, the same reference numerals are used to designate the same components. in:

Fig. 1 shows a schematic structural view of a wide-body dump truck provided by an embodiment of the present application;

Figure 2 shows a schematic structural view of a cab assembly provided by an embodiment of the present application;

Fig. 3 shows a structural schematic diagram of a viewing angle of the embodiment shown in Fig. 2;

Fig. 4 shows a schematic structural diagram of an axle system provided by an embodiment of the present application;

Fig. 5 shows a schematic structural diagram of a frame assembly provided by an embodiment of the present application;

Fig. 6 shows the structural representation of the oil-pneumatic suspension system provided by one embodiment of the present application;

Fig. 7 shows a schematic structural diagram of a container assembly provided by an embodiment of the present application.

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 7 is:

100 Wide body dump truck 110 Frame assembly 111 Frame longitudinal beam 112 First beam

113 Forward pushing beam 114 Second beam 115 Lifting beam 116 Balance beam

120 Cab components 121 Cab body 122 Suspension mounting frame 123 Cab platform

124 fender 125 wheel brow 130 container assembly 131 box body

132 Brim 140 Axle System 141 Front Axle Components 142 Middle Axle Components

143 Rear axle assembly 144 Front axle body 145 Middle axle body 146 Rear axle body

147 Motion guide mechanism 148 First connecting rod 149 Second connecting rod

150 Oil-pneumatic suspension system 151 Middle bridge oil-pneumatic suspension cylinder 152 Rear axle oil-pneumatic suspension cylinder

153 tubing 154 accumulator 155 support

Detailed ways

In order to better understand the above-mentioned purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, therefore, the protection scope of the application is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The following describes a wide-body dump truck 100 provided according to some embodiments of the present application with reference to FIGS. 1 to 7 .

The wide-body dump truck 100 provided by the embodiment of the present application, as shown in Figure 1, Figure 2, Figure 3 and Figure 7, includes a frame assembly 110, a cab assembly 120 and a container assembly 130, wherein the cab assembly 120 is installed The frame assembly 110 includes a cab body 121 located on the right side of the wide-body dump truck 100 in the direction of travel. The container assembly 130 is installed on the frame assembly 110 and is located behind the cab assembly 120. The container assembly 130 includes a Body 131 and visor 132, visor 132 extends from box body 131 to the direction of cab assembly 120, and the projection of cab assembly 120 on the horizontal plane is located inside the projection of visor 132 on the horizontal plane.

As shown in Fig. 2 and Fig. 3, the wide-body dump truck 100 provided by the embodiment of the present application, since the cab assembly 120 includes a cab body 121 located on the right side of the wide-body dump truck 100 in the driving direction, the The wide-body dump truck 100 is right-hand drive, which can meet the market demand of countries and regions that require right-hand drive in the world, so that the wide-body dump truck 100 can meet the export demand and expand the scope of use of the product.

As shown in Figures 1 and 7, the projection of the cab assembly 120 on the horizontal plane is located inside the projection of the brim of the hat 132 on the horizontal plane, so that the brim of the hat 132 is longer, and can completely cover the ceiling of the cab assembly 120 in the vertical direction. When the wide-body dump truck 100 is loaded, the falling rocks will be blocked by the hat brim 132 of the container assembly 130, preventing the cab assembly 120 from being directly hit by the falling rocks, thereby protecting the driver's personal life. It is safe, and at the same time, it plays a good role in protecting other parts of the cab assembly 120, reduces the failure rate of the product, and improves the service life of the product. Wherein, the front-rear direction of the wide-body dump truck 100 is shown by the arrows in FIG. 1 , and the left-right direction of the wide-body dump truck 100 is shown by the arrows in FIG. 2 .

Further, as shown in FIG. 7 , the visor 132 is attached to the box body 131 so that there is no gap at the junction of the visor 132 and the box body 131 , or the gap is small. The gap between them is relatively large, and the falling stones will fall on the cab assembly 120 through the gap, which is dangerous, which further improves the service life of the cab assembly 120 and the personal safety of the driver.

Specifically, the visor 132 can be welded on the box body 131, and the bonding surface of the visor 132 and the box body 131 can be realized through the welding surface; or, the visor 132 can be fixed on the box body 131 by bolts, and the connection surfaces of the two can be fitted and connected. .

In some possible embodiments provided by the present application, as shown in FIG. 2 and FIG. 3 , the cab assembly 120 further includes a suspension mounting frame 122, and the suspension mounting frame 122 is arranged on the cab body 121 close to the container assembly 130. One side of the suspension mounting frame 122 is disposed behind the cab body 121 , and the suspension mounting frame 122 is connected to the vehicle frame assembly 110 . That is to say, the cab body 121 is connected to the vehicle frame assembly 110 through the suspension mounting frame 122. Since the suspension mounting frame 122 includes a spring damping structure, it can slow down the bumping impact of the wide-body dump truck 100 on the cab during driving. The influence of the main body 121 further helps to improve the comfort of the driver and passengers, and is beneficial to improve the driving accuracy.

Further, there are two suspension mounting brackets 122, which are distributed at intervals along the left and right directions. That is to say, there are two suspension mounting frames 122 spaced apart from the left and right behind the cab, and the two suspension mounting frames 122 are connected to the frame assembly 110, which can reliably and stably support the cab body 121, and then when the vehicle is bumped and impacted, At this time, the two suspension mounts 122 can further improve the stability of the cab body 121 and improve the comfort of the driver and passengers.

In the above embodiment, the cab assembly 120 also includes a cab platform 123 and a fender 124, wherein the cab platform 123 is connected to the frame assembly 110 and is located on the left side of the cab body 121, that is to say, the cab The platform 123 and the cab body 121 are arranged side by side. The cab platform 123 is used to place the air filter. It can be understood that other components meeting the requirements can also be placed on the cab platform 123 .

Wherein, the cab platform 123 and the cab body 121 are oppositely provided with a wheel arch 125, and the number of the fenders 124 is two, and the two fenders 124 are connected with the cab platform 123 and the cab body 121 respectively, and are located in the vehicle. On both sides of the frame assembly 110 , the shape of the fender 124 matches the shape of the wheel arch 125 to form an installation space matching the shape of the tire. Specifically, fender 124 is a front fender.

In some possible embodiments provided by the present application, as shown in FIG. 1 and FIG. 4 , the wide-body dump truck 100 further includes an axle system 140, and the axle system 140 includes a front axle assembly installed on the vehicle frame assembly 110 141, the middle axle assembly 142 and the rear axle assembly 143, the front axle assembly 141, the middle axle assembly 142 and the rear axle assembly 143 all include the axle body and the motion guide mechanism 147, and the motion guide mechanism 147 connects the axle body and the vehicle frame assembly 110 . The overall structure composed of the front axle assembly 141 , the middle axle assembly 142 , the rear axle assembly 143 and the frame assembly 110 can bear the load of the vehicle, so as to meet the requirement of the large load capacity of the wide-body dump truck 100 . Through the respective movement guide mechanisms 147 of the front axle assembly 141 , the middle axle assembly 142 , and the rear axle assembly 143 , the normal running of the wide-body dump truck 100 can be ensured.

In the above embodiment, as shown in FIG. 4 , the motion guiding mechanism 147 includes a connecting rod, and the two ends of the connecting rod are hinged to the axle body and the frame assembly 110 respectively. rod 148, and a second link 149 extending in the left-right direction. That is to say, the motion guiding mechanism 147 is a five-link mechanism, and the five-link mechanism is beneficial to improve the control performance of the wide-body dump truck 100 , reduce understeer, and further improve the vehicle performance.

Specifically, the axle body includes a front axle body 144, a middle axle body 145, and a rear axle body 146 corresponding to the front axle assembly 141, the middle axle assembly 142, and the rear axle assembly 143 in sequence, and the motion guide mechanism 147 includes three, respectively The front axle body 144 is hinged to the frame assembly 110 , the middle axle body 145 is hinged to the frame assembly 110 , and the rear axle body 146 is hinged to the frame assembly 110 .

In some possible embodiments provided in the present application, as shown in FIG. 5 , the frame assembly 110 is a welded part, that is, the frame assembly 110 is integrally tailor-welded. Compared with the frame assembly 110 of the riveted structure adopted in the related art, the frame assembly 110 of welded structure has a stronger welded structure, and the bearing capacity and the life of the frame assembly 110 are also greatly improved, so that it can effectively solve the problem of The bottle strength problem of the limited load capacity of the wide-body dump truck 100 provides a solution for the wide-body dump truck 100 to achieve greater load.

Further, the frame assembly 110 includes a frame rail 111, and a first beam 112, a forward push beam 113, a second beam 114, a lifting beam 115, Balance beam 116. That is to say, the first beam 112, the forward beam 113, the second beam 114, the lifting beam 115, and the balance beam 116 are distributed at intervals from the cab assembly 120 to the container assembly 130, wherein the vehicle frame longitudinal beam 111 includes The two longitudinal beams distributed on the left and right are welded together to form the frame longitudinal beam 111, while the first beam 112, the forward pushing beam 113, the second beam 114, the lifting beam 115, and the balance beam 116 are welded on the vehicle frame in sequence. On the frame longitudinal beam 111, the vehicle frame assembly 110 is tailor-welded as a whole, that is to say, the structure of the vehicle frame assembly 110 is welded, and does not include a riveting structure.

Wherein, the forward push beam 113 is used to be hinged with the connecting rod of the motion guiding mechanism 147 of the front axle assembly 141 , and the second beam 114 is hinged with the connecting rod of the middle axle assembly 142 and the connecting rod of the rear axle assembly 143 . That is to say, the connecting rod of the motion guiding mechanism 147 of the middle axle assembly 142 is hinged on the second beam 114 , and the connecting rod of the motion guiding mechanism 147 of the rear axle assembly 143 is also hinged on the second beam 114 . The lift beam 115 is used to interface with the hydraulic lift system of the cargo box assembly 130 . The first beam 112 and the balance beam 116 are mainly designed according to the overall mechanical structure of the vehicle frame assembly 110 , and play a role of reinforcement to further improve the strength and bearing capacity of the vehicle frame assembly 110 .

In some possible embodiments provided by the present application, as shown in FIG. 6 , the wide-body dump truck 100 also includes an oil-pneumatic suspension system 150, and the middle axle assembly 142 and the rear axle assembly 143 are installed on the vehicle frame through the oil-air suspension system 150. That is to say, for the wide-body dump truck 100 provided by the present application, the rear suspension system matches the oil-gas suspension form. Because the oil-air suspension system 150 has variable stiffness characteristics, it can ensure that the wide-body dump truck 100 has good ride comfort, especially for construction sites and mine vehicles, where the road conditions and loading conditions are very bad. After using the oil-air suspension system, it can be significantly improved. To ease the shock and reduce the bumps, thereby improving the driver's working conditions and increasing the average speed. At the same time, the suspension durability of the oil-air suspension system 150 is relatively large, which effectively solves the problem that the rear suspension system of the wide-body dump truck in the related art adopts leaf springs that are easy to break and has poor bearing capacity. Compared with the leaf spring type rear suspension, the carrying capacity and service life of the oil-pneumatic suspension system 150 will be greatly improved.

In the above embodiments, the oil-air suspension system 150 includes a middle axle oil-air suspension cylinder 151 , a rear axle oil-air suspension cylinder 152 , an oil pipe 153 , and an accumulator 154 . Wherein, the axle body includes a middle axle body 145 and a rear axle body 146, the two ends of the middle axle oil-pneumatic suspension cylinder 151 are respectively connected to the vehicle frame longitudinal beam 111 and the middle axle body 145, and the two ends of the rear axle oil-pneumatic suspension cylinder 152 are connected to the vehicle body respectively. Longitudinal beam 111 and rear axle body 146, accumulator 154 is installed on the balance beam 116, oil-pneumatic suspension cylinder 151 of middle bridge and accumulator 154 are communicated through oil pipe 153, rear axle oil-pneumatic suspension cylinder 152 and accumulator 154 are connected through oil pipe 153 connected.

Specifically, the oil-pneumatic suspension system 150 also includes a support 155 , which is welded on the frame longitudinal beam 111 , and the oil-pneumatic suspension cylinder 151 of the middle axle and the oil-pneumatic suspension cylinder 152 of the rear axle are connected with the support 155 . The oil pipe 153 may be a high-pressure oil pipe 153 .

It can be understood that by changing the oil volume of the cylinder working chamber and the inflation pressure of the air chamber of the middle axle oil-pneumatic suspension cylinder 151 and the rear axle oil-pneumatic suspension cylinder 152, different variable stiffness characteristics can be obtained, so that the oil-pneumatic suspension system 150 can satisfy Wide-body dump trucks of different tonnages 100 requirements, and ensure the reliability of the whole machine.

That is to say, the wide-body dump truck 100 provided in the embodiment of the present application, since the middle axle assembly 142 and the rear axle assembly 143 are installed on the vehicle frame through the oil-pneumatic suspension system 150, can effectively solve the problem of suspension connection through leaf springs in the related art. The axle body and the frame assembly 110 have problems of high system failure rate and poor comfort, and due to the mechanical characteristics of the oil-pneumatic suspension system 150, it can meet the requirements of a larger load-bearing capacity of the vehicle, thereby improving the load-bearing capacity of the vehicle.

Furthermore, the front axle assembly 141 is connected to the vehicle frame assembly 110 through an oil-pneumatic suspension frame, so as to further increase the carrying capacity and service life of the whole machine, and improve the comfort of drivers and passengers.

Further, the rated load of the front axle assembly 141 is equal to 23 tons to 27 tons, such as 23 tons, 24 tons, 25 tons, 26 tons, 27 tons, or other values that meet the requirements; the rated load of the middle axle assembly 142 is equal to 38 tons to 42 tons, such as 38 tons, 39 tons, 40 tons, 41 tons, 42 tons, or other values that meet the requirements; the rated load of the rear axle assembly 143 is equal to 38 tons to 42 tons, such as 38 tons, 39 tons, 40 tons , 41 tons, 42 tons, or other values that meet the requirements; such matching can greatly increase the load capacity of the wide-body dump truck 100 and expand the scope of use of the wide-body dump truck 100.

Specifically, the rated load of the front axle assembly 141 is equal to 25 tons, the rated load of the middle axle assembly 142 is equal to 40 tons, and the rated load of the rear axle assembly 143 is equal to 40 tons, which can increase the load capacity of the wide-body dump truck 100 to 70 tons, compared with the load capacity of wide-body dump trucks in related technologies generally lower than 60 tons, it greatly improves the load capacity of the entire vehicle and expands the scope of application of the product.

In the description of this application, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper", "lower" and so on is based on the orientation described in the drawings. Or positional relationship, is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the application; "Connection", "installation" and "fixation" should 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 through an intermediary indirectly connected. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the description of the present application, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in connection with the embodiment or example are included in the present application In at least one embodiment or example of . In this application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

A wide-body dump truck (100), comprising:

Frame assembly (110);

The cab assembly (120), installed on the frame assembly (110), includes a cab body (121) located on the right side of the wide-body dump truck (100) in the direction of travel;

The cargo box assembly (130), installed on the vehicle frame assembly (110), is located behind the cab assembly (120), and the cargo box assembly (130) includes a box body (131) and a visor (132) , the visor (132) extends from the box (131) toward the cab assembly (120);

Wherein, the projection of the cab assembly (120) on the horizontal plane is located inside the projection of the visor (132) on the horizontal plane.
The wide-body dump truck (100) according to claim 1, wherein the cab assembly (120) further comprises:

The suspension installation frame (122) is arranged on the rear side of the cab body (121) and connected with the vehicle frame assembly (110), and the suspension installation frame (122) includes a spring damping structure.
The wide-body dump truck (100) according to claim 2, wherein,

The number of the suspension mounting brackets (122) is two, distributed at intervals along the left and right directions.
The wide-body dump truck (100) according to claim 1, wherein the cab assembly (120) further comprises:

The cab platform (123), connected with the vehicle frame assembly (110), is located on the left side of the cab body (121), and is used to place the air filter. The cab platform (123) and the The cab body (121) is relatively provided with wheel eyebrows (125);

Two fenders (124), respectively connected with the cab platform (123) and the cab body (121), are located on both sides of the vehicle frame assembly (110), and the fenders ( 124) matches the shape of the wheel arch (125).
The wide-body dump truck (100) according to any one of claims 1 to 4, further comprising:

A vehicle axle system (140), the vehicle axle system (140) includes a front axle assembly (141), a middle axle assembly (142) and a rear axle assembly (143) installed on the vehicle frame assembly (110), the The front axle assembly (141), the middle axle assembly (142) and the rear axle assembly (143) all include an axle body and a motion guide mechanism (147), and the motion guide mechanism (147) is connected to the axle body and the frame assembly (110).
The wide-body dump truck (100) according to claim 5, wherein the motion guiding mechanism (147) comprises:

A connecting rod whose two ends are respectively hinged to the axle body and the frame assembly (110), the connecting rods include four first connecting rods (148) extending in the front-rear direction, and one first connecting rod (148) extending in the left-right direction Second link (149).
The wide-body dump truck (100) according to claim 6, wherein,

The vehicle frame assembly (110) is a weldment, including a frame longitudinal beam (111), and a first beam (112) welded on the vehicle frame longitudinal beam (111) at intervals from front to rear, a forward push Crossbeam (113), second crossbeam (114), lifting crossbeam (115), balance beam (116), described forward pushing crossbeam (113) is hinged with described connecting rod of described front axle assembly (141), so The second beam (114) is hinged to the connecting rod of the middle axle assembly (142) and the connecting rod of the rear axle assembly (143), and the lifting beam (115) is connected to the cargo box Hydraulic lift system connection of assembly (130).
The wide-body dump truck (100) according to claim 7, further comprising:

An oil-air suspension system (150), the middle axle assembly (142) and the rear axle assembly (143) are installed on the vehicle frame through the oil-air suspension system (150).
The wide-body dump truck (100) according to claim 8, wherein the oil-pneumatic suspension system (150) comprises:

Middle axle oil-pneumatic suspension cylinder (151), rear axle oil-pneumatic suspension cylinder (152), oil pipe (153), accumulator (154), described vehicle axle body comprises middle axle body (145) and rear axle body (146), The two ends of the middle axle oil-pneumatic suspension cylinder (151) are respectively connected to the frame longitudinal beam (111) and the middle axle main body (145), and the two ends of the rear axle oil-pneumatic suspension cylinder (152) are respectively connected to the The frame longitudinal beam (111) and the rear axle body (146), the accumulator (154) is installed on the balance beam (116), the mid-axle oil-pneumatic suspension cylinder (151) and the The energy accumulator (154) is communicated through the oil pipe (153), and the rear axle oil-pneumatic suspension cylinder (152) is communicated with the energy accumulator (154) through the oil pipe (153).
The wide-body dump truck (100) according to claim 5, wherein,

The rated load of the front axle assembly (141) is equal to 23 tons to 27 tons;

The rated load of the middle bridge assembly (142) is equal to 38 tons to 42 tons;

The rated load of said rear axle assembly (143) is equal to 38 tons to 42 tons.