CN101734188A - a dump truck - Google Patents

Abstract

A dump truck, comprising a chassis, a hydraulic lifting system, a sub-frame and a compartment, the sub-vehicle is erected on the chassis, the floor beam of the compartment is erected on the sub-frame, and the compartment's The rear part is hinged to the sub-frame winch at the rear end of the sub-frame, the two floor longitudinal beams of the carriage straddle the outer sides of the two sub-frame longitudinal beams of the sub-frame, the floor longitudinal beams and the sub-frame The longitudinal beams overlap in the height direction, and the two floor longitudinal beams and the two sub-frame longitudinal beams are arranged symmetrically with respect to the longitudinal central axis of the dump truck. The invention effectively improves the longitudinal beam structure of the bottom plate of the dump truck, which can reduce the height of the center of gravity of the cargo, increase the stability of the driving and lifting state of the vehicle, prevent the vehicle from swinging from side to side when the vehicle is running on a complex road surface, and especially reduce the weight of the vehicle. The phenomenon of throwing the car when turning with a load increases the safety and stability of the vehicle. In addition, the invention also has the advantages of reliable structure and low production cost.

Description

a dump truck

technical field

The invention relates to a dump truck, in particular to the structure of a sub-frame and a compartment floor of the dump truck.

Background technique

With the development of the dump truck market, especially the large-tonnage dump truck market, while it is convenient to transport a large amount of goods, it also presents some safety issues that cannot be ignored. For example, when a dump truck transports goods, the high center of gravity of the goods often affects the stability of the vehicle, especially when the vehicle is driving on a complex road surface, the carriage is easy to swing left and right, and the phenomenon of throwing the carriage will occur when turning with a heavy load. When unloading cargo, the high center of gravity of the cargo also affects the lifting stability of the vehicle. The above problems can also cause damage to the vehicle body structure and hydraulic system. In severe cases, accidents that endanger the safety of personnel may occur.

In summary, the dump truck of the prior art needs to be improved.

Contents of the invention

The object of the present invention is to provide a dump truck, which can effectively lower the center of gravity of the goods, thereby improving the safety performance of the dump truck.

In order to achieve the above object, the technical solution of the dump truck provided by the present invention includes a chassis, a hydraulic lifting system, a sub-frame and a compartment, the sub-vehicle is erected on the chassis, and the floor beam of the compartment is erected on the on the sub-frame, and the rear part of the compartment is hinged to the sub-frame winch at the rear end of the sub-frame. On the outer side of the beam, the floor longitudinal beam overlaps with the subframe longitudinal beam in the height direction, and the floor longitudinal beams of the two compartments and the two subframe longitudinal beams are arranged symmetrically to the longitudinal central axis of the dump truck.

According to the dump truck above, the height of the sub-frame longitudinal beam is 180-220mm.

According to the dump truck above, wherein, the height of the floor longitudinal beam is 200-230mm.

According to the dump truck above, wherein the hinge lug at the rear of the compartment is hinged to the winch of the subframe at the rear end of the subframe through a through shaft penetrating through the subframe.

Because the bottom plate longitudinal beam and the auxiliary frame longitudinal beam are arranged symmetrically to the longitudinal central axis of the dump truck. When the two floor longitudinal beams of the car straddle the outer sides of the two sub-frame longitudinal beams, that is, the floor longitudinal beams straddle the sub-frame longitudinal beams outside, the floor longitudinal beams and sub-frame longitudinal beams form a kind of Beam structure. This structure adopts the method that the floor longitudinal beam spans outside the sub-frame longitudinal beam. Under the condition of ensuring the strength of the car box and sub-frame and not reducing the height of the longitudinal beam, the outer span structure of the floor longitudinal beam and the sub-frame The longitudinal beams overlap 80-120mm in the height direction, and the specific overlapping height can be adjusted appropriately depending on the specific design and application.

From the above analysis, it can be known that the present invention can reduce the height of the center of gravity of the cargo by effectively improving the longitudinal beam structure of the dump truck floor, increase the stability of the vehicle driving and lifting state; prevent the vehicle from swinging left and right when the vehicle is running on a complex road surface, In particular, it can reduce the throwing phenomenon of the vehicle when turning with a heavy load, and increase the safety and stability of the vehicle. In addition, the invention also has the advantages of reliable structure and low production cost.

Description of drawings

Fig. 1 is a schematic diagram of the vehicle layout of a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram of the positional relationship between the subframe longitudinal beam and the floor longitudinal beam in a preferred embodiment of the present invention;

Fig. 3 is a schematic front view of the sub-frame longitudinal beam of the preferred embodiment of the present invention;

Fig. 4 is a schematic left view of the sub-frame longitudinal beam of the preferred embodiment of the present invention;

Fig. 5 is a schematic top view of the sub-frame longitudinal beam of the preferred embodiment of the present invention;

Fig. 6 is a schematic front view of the floor longitudinal beam of the preferred embodiment of the present invention;

Fig. 7 is a schematic left view of the floor longitudinal beam of the preferred embodiment of the present invention;

Fig. 8 is a schematic bottom view of the floor longitudinal beam of the preferred embodiment of the present invention;

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments;

Fig. 1 is a schematic diagram of the whole vehicle layout of the preferred embodiment of the present invention, the sub-frame 2 is arranged on the chassis 1, the sub-frame 2 and the chassis 1 can be connected by side guard plates, U-shaped bolts, etc. Erected on the auxiliary frame 2, the compartment 4 is mainly composed of the compartment floor 3, side panels, front panels and rear baffles (the three are not marked in Figure 1), and the rear part of the compartment 4 is hinged to the auxiliary frame through the compartment floor 3. The subframe winch 22 of vehicle frame 2 rear ends. The cylinder body of the oil cylinder 5 of the hydraulic lift system is hinged at the lower front end of the carriage 4, and the piston rod is hinged at the piston rod support 21 located at the front end of the subframe 2.

Figure 2 shows the positional relationship between the floor longitudinal beam 31 and the sub-frame longitudinal beam 20, and Figures 3-8 show the structures of the sub-frame longitudinal beam 20 and the floor longitudinal beam 31 respectively. The reason why the center of gravity is lowered is mainly because the subframe longitudinal beam 20 and the floor longitudinal beam 31 partially overlap in the height direction, and the distance between the inner sides of the two floor longitudinal beams 31 is shorter than the inner side of the two subframe longitudinal beams 20 The distance between them is at least twice the lateral width of a sub-frame longitudinal beam 20, so that the two floor longitudinal beams span the two sub-frame longitudinal beams 20, and of course the two floor longitudinal beams 31 and the two sub-frame longitudinal beams 20 are all arranged symmetrically to the longitudinal central axis of the dump truck.

The subframe 2 mainly includes a subframe longitudinal beam 20, a subframe winch 22 located at its rear end and a piston rod support 21 located at its front end. Also be provided with a plurality of sub-frame beams 23, its number and setting direction can be slightly adjusted according to actual needs. The compartment floor 3 mainly includes the compartment floor body 30, the floor crossbeam 35, the floor longitudinal beam 31 and the hinged ear plate 32, in order to improve the strength of the connection between the floor crossbeam 35 and the floor longitudinal beam 31, a reinforcement is welded at the junction of the two. Plate 34 , the preferred form of the reinforcing plate 34 is L-shaped in cross-section, and the hinged lug 32 is arranged close to the rear of the floor longitudinal beam 31 . The subframe winch 22 and the hinge lug 32 are hinged through a through shaft 6 , and the through shaft 6 traverses through the subframe 2 . The carriage 4 rotates around the through-shaft 6 when it is lifted and lowered.

According to different loading requirements, the height of the subframe longitudinal beam 20 and the floor longitudinal beam 31 can be designed as different values. The height of the beam can be adjusted in the range of 200-230mm.

In this preferred embodiment, the floor longitudinal beam 31 is used to straddle the outside of the sub-frame longitudinal beam 20 under the condition that the compartment 4 does not overturn, so that the floor longitudinal beam 31 and the sub-frame longitudinal beam 20 overlap H in the height direction up to 80~ 120mm, which lowers the center of gravity of the vehicle and increases the stability of the lifting state. At the same time, the straddle structure, that is, the outer span structure is used to limit the position and prevent the vehicle from swinging during operation.

The invention effectively reduces the height of the center of gravity of the entire vehicle by improving the structure of the longitudinal beam of the bottom plate of the dump truck and the longitudinal beam of the auxiliary frame. It prevents the vehicle from swinging left and right when the vehicle is driving on a complex road surface, especially restricts the vehicle's throwing phenomenon when the vehicle is turning with a heavy load, and increases the safety and stability of the vehicle. The structure is simple and reliable, and the manufacturing process is simple and easy.

However, the above descriptions are only preferred feasible embodiments of the invention, and do not limit the protection scope of the present invention. Therefore, all equivalent structural changes made by using the description of the invention and the contents of the accompanying drawings are included in the protection scope of the present invention.

Claims (4)

1. dumping car, comprise the chassis, hydraulic lifting system, subframe and compartment, described subframe is located on the described chassis, the floor beam in described compartment is set up on the described subframe, and the rear portion in described compartment is articulated in the subframe twisted seat of described subframe rear end, it is characterized in that, two underframe longitudinal members in described compartment straddle the outside of two subframe longerons of described subframe, described underframe longitudinal member and described subframe longeron are overlapping on short transverse, and described two underframe longitudinal members and described two subframe longerons all are symmetrical in the longitudinal central axis line setting of dumping car.

2. dumping car according to claim 1 is characterized in that, the height of described subframe longeron is 180-220mm.

3. dumping car according to claim 1 is characterized in that, the height of described underframe longitudinal member is 200-230mm.

4. according to the arbitrary described dumping car of claim 1-3, it is characterized in that the hinged otic placode at the rear portion in described compartment is articulated in the subframe twisted seat of described subframe rear end by a thru shaft that connects subframe.

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