CN115503830A

CN115503830A - Low-center-of-mass bearing type frame and vehicle

Info

Publication number: CN115503830A
Application number: CN202211147552.6A
Authority: CN
Inventors: 于海兴; 曹建宏; 崔洪杰; 张特; 王骆宾
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-23
Anticipated expiration: 2042-09-21
Also published as: CN115503830B

Abstract

The invention relates to a low-mass-center bearing type frame and a vehicle, belonging to the technical field of vehicles and parts thereof. The vehicle comprises the frame, a cab, electric wheels, a power battery system, an upper mounting device and other subsystems on a chassis. The cab, the frame and the upper assembly jointly form a whole vehicle bearing structure, all module materials and structural strength are fully utilized and exerted, the rigidity of the vehicle body is high, the lightweight advantage is achieved, the cab and the equipment cabin form effective structural protection on the upper assembly, and oil liquid transportation is safer.

Description

Low-center-of-mass bearing type frame and vehicle

Technical Field

The invention relates to a low-mass center bearing type frame and a vehicle, and belongs to the technical field of vehicles and parts thereof.

Background

The special oil liquid transport vehicle is a special vehicle for collecting, transferring and unloading liquid articles such as oil, water, liquid chemical raw materials and the like. Current fluid transportation private vehicle adopts through axle structure mostly, and its upper portion is mostly the cell type frame structure, and upper portion is the bottom bracket of box or jar body again, and this just leads to the arrangement of facial make-up box or jar body centroid very high. When the vehicle is fully loaded, the mass center of the whole vehicle is correspondingly improved more, so that the safety accident of unstable rollover is easy to happen when the vehicle makes sharp turns.

In addition, the body of the current special oil transportation vehicle is of a non-bearing structure, and the upper loading and chassis loads are basically borne by a chassis frame, so that the structural strength requirement of the frame is high, the used material is a high-strength steel plate, the using amount is large, and the frame has large mass; the upper tank body or the box body does not participate in bearing, but the lower part of the upper tank body or the box body is connected with a chassis frame in an auxiliary frame mode in order to keep the rigidity requirement of a transportation state; the cab of the vehicle is mostly a suspension independent cab and is connected with a chassis frame. The rigidity combination of the whole vehicle structure is mainly the connection of the frame and the auxiliary frame, the connection position is concentrated near the upper surface of the frame, and the contribution of the vehicle body and the cab structure to the whole vehicle rigidity is limited and is not fully used.

Disclosure of Invention

The invention aims to provide a low-center-of-mass load-bearing frame and a vehicle aiming at the problems.

The invention is realized by the following technical scheme:

the low-mass center bearing type frame comprises an underframe, a frame body and a hard spot structure, wherein the underframe comprises a left underframe longitudinal beam and a right underframe longitudinal beam which are communicated from front to back and an underframe cross beam which is connected with the left underframe longitudinal beam and the right underframe longitudinal beam;

the vehicle body framework comprises a plurality of V-shaped framework cross beams and a plurality of framework longitudinal beams which are communicated from front to back, and the vehicle body framework is welded with the underframe through the V-shaped framework cross beams;

the hard point structure comprises an upper cross arm support, a lower cross arm support and an upper pivot support of the hydro-pneumatic spring, the cross arm support is connected with a cross beam of the underframe, and the upper pivot support of the hydro-pneumatic spring is embedded and connected to the car body framework.

The frame reduces the arrangement height of the upper mass center, and simultaneously can ensure that the chassis and the whole vehicle structure meet the requirement of road transportation load, and the stability and the safety of vehicle steering running and side slope running are obviously enhanced.

The invention is further improved in that the framework cross beams and the framework longitudinal beams are welded and connected together in a penetrating mode by adopting sectional materials and pipes, so that the strength of the integral chassis is favorably improved.

The invention also provides a vehicle which comprises a cab, the electric wheel, the power battery system, the upper mounting device and the low-mass bearing type frame.

The cab, the frame and the upper assembly jointly form a whole vehicle bearing structure, all module materials and structural strength are fully utilized and exerted, the rigidity of the vehicle body is high, the lightweight advantage is achieved, the cab and the equipment cabin form effective structural protection on the upper assembly, and oil liquid transportation is safer.

The driver's cabin, the frame and the upper connecting structure are strong in modularization, can be easily expanded into a two-axis or multi-axis form, and meet the customized requirements of the vehicles of customers.

Compared with the prior vehicle, the loading capacity of the upper loader is larger under the condition of the same vehicle height, and the height of the whole vehicle is lower under the condition of the same loading capacity.

The cab comprises a cab framework, an inner skin and an outer skin of the cab, a vehicle door and vehicle body accessories, wherein the cab framework, the inner skin and the outer skin of the cab, the vehicle door and the vehicle body accessories are fixedly arranged at the front end of a vehicle frame, the rear wall of the cab framework comprises a plurality of cross beams, vertical beams and oblique beams, the arrangement of the cross beams corresponds to the position of the framework of the vehicle body framework, and the cab and the vehicle frame are connected together at the joint surface in a welding and bolt connection mode. The cab adopts the structural design, and the structural strength can be guaranteed.

The power battery system is further improved in that at least two distribution states are arranged on a frame, wherein the first distribution state is a large battery pack state and is arranged at the height position of the underframe and transversely, the underframe at the corresponding position adopts a transverse structural structure which penetrates through an underframe beam to carry out a battery bin, and the second distribution state is a small battery pack state and is arranged at the height position of the underframe in a central mode and is fixed on the underframe through a connecting support. According to the axle load and mileage requirements of the vehicle, a plurality of large battery packs can be adopted, a plurality of small battery packs can be adopted, and a large battery pack and a small battery pack can be mixed. The individual customization demand of customer's vehicle can be satisfied, and pertinence, practicality are strong.

The invention further improves that the upper loading device comprises an upper loading container which is arranged on the frame through a bottom connecting bracket, and the side surface of the upper loading container is connected with the top end of the vehicle body framework through a plurality of connecting brackets. The upper container adopts the mounting structure, and has simple structure and strong stability.

The invention is further improved in that the left equipment cabin and the right equipment cabin are arranged on the vehicle body framework by adopting outer sheet metal parts or plastic parts and inner support brackets on two sides of the upper container. The left equipment cabin and the right equipment cabin are used as storage spaces for chassis accessories and upper accessories, have no large load requirement, and are mainly used as an integral appearance structure and used for improving a shielding space for the accessories.

In addition, elastic rubber is arranged between the bottom connecting bracket and the underframe. The gap change between the upper container and the bottom frame is eliminated.

Compared with the prior art, the invention has the following beneficial effects:

1. the reduction target of the upper mounting mass center and the whole vehicle mass center is realized by reducing the upper mounting arrangement height, and the stability and the safety of vehicle steering driving and side slope driving are obviously enhanced.

2. The cab, the frame and the upper assembly form a whole vehicle bearing structure, all module materials and structural strength are fully utilized and exerted, the rigidity of the vehicle body is high, and the light-weight advantage is achieved.

3. The driver's cabin, frame, the modularization of upper assembling connection structure are strong, and it is two axle and multiaxis form to open up very easily, satisfy customer's vehicle customization demand.

4. Compared with the existing vehicle, under the condition of the same vehicle height, the loading capacity of the upper loader is larger, and under the condition of the same loading capacity, the height of the whole vehicle is low.

5. The cab and the equipment cabin form effective structural protection for the upper part, and oil liquid transportation is safer.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a first perspective view of an overall vehicle according to an embodiment of the present invention.

FIG. 2 is a second perspective view of the overall vehicle according to the exemplary embodiment of the present invention.

FIG. 3 is a schematic structural view of a vehicle frame according to an embodiment of the present invention.

Fig. 4 is a partially enlarged structural view of a portion a in fig. 3.

FIG. 5 is a schematic view of the connection between the upper mounting structure and the chassis according to the embodiment of the present invention.

Fig. 6 is a schematic sectional structure view of fig. 5.

Fig. 7 is a schematic view illustrating a distribution structure of a battery pack according to an embodiment of the present invention.

In the figure: 100. a frame; 110. a chassis; 111. an undercarriage stringer; 112. an underframe cross beam; 120. a hard spot structure; 121. an upper cross arm support; 122. a lower cross arm support; 123. an oil-gas spring upper supporting point support; 130. a vehicle body frame; 131. a skeletal stringer; 132. a framework beam; 200. a cab; 210. a cab framework; 300. an electric wheel; 400. a power battery system; 410. a large battery pack; 420. a small battery pack; 500. installing a device; 510. loading a container; 520. a left equipment compartment; 530. a right equipment compartment; 540. a side connecting bracket; 550. the bottom is connected with the bracket.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1 to fig. 7, the low-mass center-loading type frame includes an underframe 110, a car body frame 130 and a hard spot structure 120, wherein the underframe 110 includes a left and a right underframe longitudinal beams 111 penetrating from front to back and an underframe cross beam 112 connecting the left and the right underframe longitudinal beams 111;

the vehicle body framework 130 comprises a plurality of V-shaped framework cross beams 132 and a plurality of framework longitudinal beams 131 which are through from front to back, the framework cross beams 132 and the framework longitudinal beams 131 are welded together in a penetrating mode by adopting section pipes, and the vehicle body framework 130 is welded with the underframe 110 through the V-shaped framework cross beams 132;

the hard spot structure 120 includes an upper cross arm support 121, a lower cross arm support 122, and a hydro-pneumatic spring upper pivot support 123, the cross arm support is connected to the underframe cross member 112 of the underframe 110, and the hydro-pneumatic spring upper pivot support 123 is connected to the car body frame 130 in a fitting manner.

The invention also provides a vehicle which comprises the low-mass-center bearing type frame 100, a cab 200, an electric wheel 300, a power battery system 400, an upper mounting device 500 and other subsystems on a chassis, such as a power distribution system, a braking system, a steering system, a suspension system, a heat dissipation system and a control system, wherein the suspension system preferably adopts a double-cross-arm hydro-pneumatic suspension, and then adopts a double-cross-arm torsion bar suspension, and when the load of the whole vehicle is small, a single-cross-arm suspension can be selected.

The cab 200 comprises a cab framework 210 fixedly arranged at the front end of the frame 100, an inner skin and an outer skin of the cab, a vehicle door and vehicle body accessories, the rear wall of the cab framework 210 comprises a plurality of cross beams, vertical beams and oblique beams, the arrangement of the cross beams corresponds to the framework position of the vehicle body framework 130, and the cab 200 and the frame 100 are connected together at the joint surface in a welding and bolt connection mode.

The electric wheel 300 is based on a hub motor technology, and integrates a hub motor, a reducer, a brake, a knuckle arm, a tire, and a rim. After the electric wheel 300 is adopted, the chassis does not need to be provided with a transmission, a transfer case, a through axle and a main reducer, a wheel-side motor and a transmission shaft of the traditional vehicle.

The power battery system 400 is configured at the headquarters of the frame 100, the power battery system 400 has at least two distribution states on the frame 100, the first is a large battery pack 410 state, the power battery pack is arranged at the height position of the underframe 110 and transversely arranged, the underframe 110 at the corresponding position adopts a structure which transversely penetrates through the underframe cross beam 112 to carry out a battery compartment, and the second is a small battery pack 420 state, is arranged at the height position of the underframe 110 in the center and is fixed on the underframe 110 through a connecting support.

The upper loading device 500 comprises an upper loading container 510 which is installed on the frame 100 through a bottom connecting support 550, elastic rubber is arranged between the bottom connecting support 550 and the underframe 110, the side surface of the upper loading container 510 is connected with the top end of the body framework 130 through a plurality of connecting supports 540, the upper loading container 510 has certain rigidity and strength and participates in the load bearing of the whole vehicle, and the upper loading container 510 is designed to avoid the oil leakage caused by deformation failure;

wherein, the left equipment cabin 520 and the right equipment cabin 530 are arranged on the vehicle body framework 130 by adopting outer sheet metal parts or plastic parts and inner support supports on two sides of the upper container 510. The left equipment compartment 520 and the right equipment compartment 530 are used as storage spaces for chassis accessories and upper accessories, have no large load requirement, are mainly used as an integral appearance structure and improve shielding space for the accessories, and therefore, an outer sheet metal part or a plastic part and an inner support bracket are connected to the vehicle body framework 120.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The working principle is as follows:

the frame reduces the arrangement height of the upper mass center, and simultaneously can ensure that the chassis and the whole vehicle structure meet the road transportation load requirement, and the stability and the safety of vehicle steering driving and side slope driving are obviously enhanced.

The cab, the frame and the upper part form a whole vehicle bearing structure, all module materials and structural strength are fully utilized and exerted, the rigidity of the vehicle body is high, the lightweight advantage is achieved, the cab and the equipment cabin form effective structural protection on the upper part, and oil liquid transportation is safer.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A low-mass-center bearing type frame is characterized by comprising an underframe (110), a body framework (130) and a hard spot structure (120), wherein the underframe (110) comprises a left underframe longitudinal beam (111) and a right underframe longitudinal beam (111) which are communicated in the front-back direction and an underframe cross beam (112) which is connected with the left underframe longitudinal beam and the right underframe longitudinal beam (111);

the vehicle body framework (130) comprises a plurality of V-shaped framework cross beams (132) and a plurality of framework longitudinal beams (131) which are penetrated in the front and back directions, and the vehicle body framework (130) is welded with the underframe (110) through the V-shaped framework cross beams (132);

the hard point structure (120) comprises an upper cross arm support (121), a lower cross arm support (122) and a hydro-pneumatic spring upper support (123), wherein the cross arm support is connected with an underframe cross beam (112) of the underframe (110), and the hydro-pneumatic spring upper support (123) is connected to a car body framework (130) in a embedding manner.

2. A low mass centre load frame according to claim 1, wherein said frame rails (132) and frame rails (131) are welded together in an interposed manner using profile tubing.

3. A vehicle, characterized by comprising a driver's cabin (200), an electric wheel (300), a power battery system (400), a top-mount device (500) and a low mass-center load-carrying frame (100) according to claim 1 or 2.

4. A vehicle according to claim 3, characterized in that the cab (200) comprises a cab framework (210) fixedly arranged at the front end of the frame (100), an inner skin and an outer skin of the cab, a door and a body accessory, the rear wall of the cab framework (210) comprises a plurality of cross beams, vertical beams and oblique beams, the arrangement of the cross beams corresponds to the framework position of the body framework (130), and the cab (200) and the frame (100) are connected together at the joint surface by welding and bolting.

5. A vehicle according to claim 3, characterized in that the power battery system (400) has at least two distribution states on the vehicle frame (100), the first is a large battery pack (410) state, which is arranged at the height position of the underframe (110) and transversely arranged, the corresponding position of the underframe (110) adopts a transverse through underframe cross beam (112) to carry out the structure of a battery chamber, and the second is a small battery pack (420) state, which is arranged at the height position of the underframe (110) and centrally arranged and fixed on the underframe (110) through a connecting support.

6. A vehicle according to claim 3, characterized in that the upper loading device (500) comprises an upper loading container (510) mounted on the frame (100) by a bottom connecting bracket (550), and the side of the upper loading container (510) is connected with the top end of the body frame (130) by a plurality of connecting brackets (540).

7. The vehicle of claim 6, characterized in that the left equipment compartment (520) and the right equipment compartment (530) are mounted on the vehicle body framework (130) by adopting outer sheet metal parts or plastic parts on two sides of the upper container (510) and inner support brackets.

8. A vehicle according to claim 6, characterized in that an elastic rubber is arranged between the bottom bracket (550) and the chassis (110).