CN212667494U - Chassis skeleton of vehicle - Google Patents

Abstract

The utility model discloses a chassis framework of a vehicle, which relates to the technical field of vehicles and comprises a framework front section, a framework middle section and a framework rear section which are connected in sequence; the middle section of the framework comprises longitudinal beams and cross beams; the front end and the rear end of a longitudinal beam are respectively connected with the front section of the framework and the rear section of the framework; the plurality of cross beams are arranged on two sides of the longitudinal beam at intervals, so that a plurality of battery bins for installing the battery boxes are formed on two sides of the longitudinal beam. The utility model discloses a skeleton middle section has and only has a longeron to this longeron can be assembled into a plurality of battery compartment with a plurality of crossbeam, thereby fully releases the usable space in skeleton middle section, makes each battery box lay in the skeleton middle section highly concentrated, has reduced the focus of whole car effectively, has improved the security of whole car and has controlled stability, can realize providing the technical support of core for whole car low floor design.

Description

Chassis skeleton of vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a chassis skeleton of vehicle.

Background

The urban passenger car can be divided into a first-level step, a second-level step and a third-level step according to the step number of the passenger door steps, wherein the upper passenger door and the lower passenger door can realize the first-level step, and the urban passenger car is called a low-floor urban passenger car. The urban passenger car realizes low floor, can improve the transport efficiency and transport safety, greatly facilitates public trips of people such as the old, the disabled, pregnant women and children, and is an important development direction of the urban passenger car.

Compared with a traditional fuel passenger car or a hybrid power passenger car, the electric passenger car has the advantages of energy conservation and environmental protection, and is the current mainstream passenger car type. Most of existing electric motor coaches cannot completely achieve an in-vehicle all-low floor structure, only can achieve a low floor structure from a front door of a vehicle to a middle door region position, and the main reasons are that the number of power battery packs of the electric motor coaches is large, the occupied space is large, and the arrangement is difficult. At present, although some electric motor coaches are arranged at the top of the frame through the batteries, so that the design of a full-low floor in the motor coach is realized, the arrangement mode has high requirement on the strength of the frame, the gravity center of the motor coach is higher, and the operation stability of the motor coach is influenced.

Therefore, in order to realize the design of the all-low floor, the layout of the power battery pack needs to be reasonably planned and designed, and the high-pressure wire harness, the brake air pipe, the hydraulic oil pipe and other pipelines of the power battery pack need to be comprehensively considered for reasonable layout. However, the original layout of the power battery pack and related pipelines cannot be fundamentally changed based on the framework structure of the existing electric bus. Based on the structure, the vehicle chassis framework with the structure of the full-low floor in the vehicle can be realized through the improved structure optimization.

Disclosure of Invention

The utility model provides a chassis skeleton of vehicle, its main aim at solves above-mentioned problem.

The utility model adopts the following technical scheme:

a chassis framework of a vehicle comprises a framework front section, a framework middle section and a framework rear section which are sequentially connected; the middle section of the framework comprises longitudinal beams and cross beams; the front end and the rear end of the longitudinal beam are respectively connected with the framework front section and the framework rear section; the plurality of cross beams are arranged on two sides of the longitudinal beam at intervals, so that a plurality of battery bins for installing battery boxes are formed on two sides of the longitudinal beam.

Furthermore, the longitudinal beam comprises a longitudinal beam body, a cavity for distributing pipelines is formed in the longitudinal beam body along the length direction of the longitudinal beam body, and a plurality of first through holes for the pipelines to pass through are formed in the corresponding positions of the two side walls of the longitudinal beam body in each battery compartment.

Still further, the longitudinal beam also comprises a fixing plate and a supporting piece which is approximately in a V-shaped structure 21274; the longitudinal beam body is of a groove-shaped structure with a downward opening; the openings of the plurality of supporting pieces are upwards and fixedly arranged in the longitudinal beam body; the fixing plate is fixedly arranged between the supporting piece and the longitudinal beam body and is provided with a plurality of second through holes for pipelines to pass through.

Furthermore, the middle section of the framework further comprises mounting beams arranged at the front end and the rear end of the longitudinal beam, one side of each mounting beam is fixedly arranged at the front section or the rear section of the framework, and the middle part of the other side of each mounting beam is provided with a connecting part used for connecting the longitudinal beam.

Furthermore, the battery box is arranged in the battery bin, and a plurality of connecting lugs are fixedly arranged on two sides of the bottom of the battery box; a plurality of the connecting lugs are detachably arranged at the bottom of the cross beam through bolts.

Furthermore, the connecting lugs of two adjacent battery boxes are arranged at the bottom of the same cross beam in a staggered manner.

Furthermore, the cross beam comprises a reinforcing plate and a V-shaped cross beam body 21274, wherein the lower side wall of the cross beam body is provided with a plurality of mounting holes for mounting the bolts; the reinforcing plate is fixedly arranged between the upper side wall and the lower side wall of the beam body.

Still further, the reinforcing plate is substantially in a wave-shaped structure.

Furthermore, this skeleton middle section still includes the installing support, and the one end of this installing support sets firmly in above-mentioned crossbeam tip, and the other end sets firmly in above-mentioned longeron lateral wall.

Furthermore, the middle section of the framework further comprises sealing plates, and the sealing plates are fixedly arranged at the outer side ends of the two adjacent cross beams.

Compared with the prior art, the utility model discloses the beneficial effect who produces lies in:

1. the utility model discloses a skeleton middle section has and only has a longeron to this longeron can be assembled into a plurality of battery compartment with a plurality of crossbeam, thereby fully releases the usable space in skeleton middle section, makes each battery box lay in the skeleton middle section highly concentrated, has reduced the focus of whole car effectively, has improved the security of whole car and has controlled stability, can realize providing the technical support of core for whole car low floor design.

2. The utility model discloses the simple structure of well longeron, design benefit, relevant pipeline can concentrate and rationally arrange in the cavity of longeron to saved the pipeline and laid the space, arrange for power battery's concentration and provided facility, help whole car to realize the design of low floor entirely.

3. The utility model discloses well battery box adopts the form of holding in the palm dress to install in the battery compartment from supreme down for the dismouting of battery box is nimble more convenient, provides very big facility for the maintenance in later stage overhauls, and sets up in same crossbeam bottom with the engaging lug of two adjacent battery boxes straggling each other, has fully improved the space of utilizing of crossbeam body bottom from this, and makes the battery box have as many as possible fixed points and be used for the bearing.

4. The utility model discloses battery compartment subassembly such as well crossbeam, installing support, engaging lug and shrouding simple structure uses in a flexible way, easy dismounting, and it is higher when the distribution volume demand of vehicle, when the battery compartment space in skeleton middle section is not enough, can set up the battery compartment subassembly in the suitable position of skeleton back end to add and establish several battery compartments, so that arranging of power battery.

Drawings

Fig. 1 is a schematic structural diagram of the present invention (not shown in the battery box).

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a top view of the middle frame of the present invention.

Fig. 4 is a schematic structural view of the middle longitudinal beam of the present invention.

Fig. 5 is a schematic structural view of the middle cross beam of the present invention.

Fig. 6 is a schematic structural view of the middle battery box and the connecting lug of the present invention.

In the figure: 100. a framework front section; 200. a framework middle section; 201. a battery compartment; 210. a stringer; 211. a stringer body; 212. a fixing plate; 213. a support member; 214. a cavity; 215. a first through hole; 216. a second through hole; 217. a first lightening hole; 220. a cross beam; 221. a beam body; 222. a reinforcing plate; 223. a second lightening hole; 230. mounting a beam; 231. a connecting portion; 240. a battery box; 250. connecting lugs; 251. a bolt; 260. mounting a bracket; 270. closing the plate; 271. a third lightening hole; 300. a rear section of the framework; 310. and (4) a rear bin.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.

Referring to fig. 1 to 6, a chassis frame of a vehicle includes a frame front section 100, a frame middle section 200, and a frame rear section 300, which are sequentially connected; the framework middle section 200 comprises longitudinal beams 210 and cross beams 220; the front end and the rear end of a longitudinal beam 210 are respectively connected with the framework front section 100 and the framework rear section 300; the plurality of cross beams 220 are arranged at intervals on two sides of the longitudinal beam 210, so that a plurality of battery compartments 201 for installing battery boxes 240 are formed on two sides of the longitudinal beam 210. The utility model provides a chassis frame's biggest innovation point is having and only has a longeron 210 in skeleton middle section 200, and this longeron 210 can be assembled into a plurality of battery compartment 201 with a plurality of crossbeam 220, thereby fully release skeleton middle section 200's usable space, make each battery box 240 lay in skeleton middle section 200 highly intensively, the focus of whole car has been reduced effectively, the security of whole car has been improved and control stability, can realize the technical support that the design of low floor provided the core for whole car.

Referring to fig. 1 to 4, specifically, the stringer 210 includes a stringer body 211, the stringer body 211 is provided with a cavity 214 along a length direction thereof for laying a pipeline, and two side walls of the stringer body 211 are provided with a plurality of first through holes 215 for the pipeline to pass through at corresponding positions of each battery compartment 201. The utility model discloses well pipeline includes pipelines such as the high-pressure pencil of battery, brake trachea and hydraulic pressure oil pipe. High-voltage wire harnesses of batteries in the battery bins 201 are introduced into the cavity 214 of the longitudinal beam body 211 through the first through holes 215 and then are uniformly collected and connected to the framework rear section 300, and pipelines such as brake air pipes and hydraulic oil pipes are connected with the framework front section 100 and the framework rear section 300 in a penetrating mode in the cavity 214 of the longitudinal beam body 211. Therefore, the utility model discloses can make each pipeline concentrate and rationally arrange in longeron body 211 to save the pipeline and laid the space, arrange for power battery's concentration and provide convenience, help whole car to realize the design of low floor.

Referring to fig. 1-4, more specifically, stringer 210 further includes a fixed plate 212 and a support 213 of generally v-shaped 21274; the longitudinal beam body 211 is of a groove-shaped structure with a downward opening; the support members 213 are fixedly arranged in the longitudinal beam body 211 with openings facing upwards; the fixing plate 212 is fixedly disposed between the supporting member 213 and the longitudinal beam body 211, and the fixing plate 212 is provided with a plurality of second through holes 216 for passing pipelines. The longitudinal beam body 211 adopts a groove-shaped structure, so that the arrangement and the maintenance of pipelines can be facilitated, the material is saved, the self weight of the longitudinal beam body 211 is fully reduced, and the light weight design of a vehicle is realized. The support member 213 is fittingly installed in the longitudinal beam body 211, so that the structural strength of the longitudinal beam body 211 can be effectively improved; the fixing plate 212 is designed to fix the pipeline and also to assist the reinforcing member 213 to improve the structural strength. In addition, a plurality of first lightening holes 217 are formed in the upper end face of the longitudinal beam body, and the first lightening holes 217 can not only further lighten the self weight of the longitudinal beam, but also serve as an access hole so as to be convenient for maintenance of pipelines inside the longitudinal beam body 211.

Referring to fig. 1 to 6, in particular, the cross member 220 includes a cross member body 221 in a v-21274h shape, a lower side wall of the cross member body 221 being provided with a plurality of mounting holes for mounting bolts 251; the battery box 240 is installed in the battery compartment 201, and a plurality of connection lugs 250 are fixedly arranged on two sides of the bottom of the battery box 240, and the connection lugs 250 are detachably arranged at the bottom of the cross beam 220 through bolts 251. In order to facilitate the adjustment of the installation angle of the engaging lug 250, the installation hole may be a kidney-shaped hole. The utility model discloses well battery box 240 adopts the form of holding in the palm the dress to install in battery compartment 201 from supreme down for battery box 240's dismouting is nimble more convenient, provides very big facility for the maintenance in later stage overhauls. In order to increase the utilization space of the bottom of the beam body 221 and make the battery boxes 240 have as many fixing points as possible for bearing, the connecting lugs 241 of two adjacent battery boxes 240 are arranged at the bottom of the same beam 220 in a staggered manner.

Referring to fig. 5, more specifically, in order to sufficiently improve the structural strength of the cross member 220, the cross member 220 is further provided with a reinforcing plate 222, and the reinforcing plate 222 is fixedly disposed between the upper and lower sidewalls of the cross member body 221. As a preferable scheme: the reinforcing plate 222 has a substantially wave-shaped structure, so that the reinforcing plate 222 can better support the beam body 221. In addition, in order to reduce the weight of the cross beam 220 and increase the weight reduction level of the cross beam 220, the cross beam body 221 and the reinforcing plate 222 are provided with a plurality of second lightening holes 223.

Referring to fig. 1 to 3, the middle frame section 200 further includes mounting beams 230 disposed at the front and rear ends of the longitudinal beam 210, one side of the mounting beam 230 is fixedly disposed at the front frame section 100 or the rear frame section 300, and a connecting portion 231 for connecting the longitudinal beam 210 is disposed at the middle portion of the other side. The mounting beam 230 is generally called Contraband type structure, and two ends of the longitudinal beam 210 are inserted into the connecting parts 231, thereby realizing reliable connection with the front and rear sections of the framework. In order to save materials and fully utilize the space at the two ends of the middle section 200 of the framework, the lower side wall of the mounting beam 230 is also provided with mounting holes and bolts for fixing the connecting lugs 250, so that the cross beam 220 can be replaced to play a role in fixing the battery box.

Referring to fig. 1, 2, 3 and 5, the middle frame section 200 further includes a mounting bracket 260, the mounting bracket 260 is substantially Z-shaped, and one side of the mounting bracket 260 is fixedly disposed at an end of the cross beam 220, and the other side of the mounting bracket is fixedly disposed at a side wall of the longitudinal beam 210. The cross beam 220 can be firmly mounted to the side walls of the longitudinal beam 210 by the mounting bracket 260, thereby effectively improving structural stability.

Referring to fig. 1 to 3, the middle frame section 200 further includes sealing plates 270, and the sealing plates 270 are fixedly disposed at the outer ends of two adjacent cross beams 220. The design of shrouding 270 can not only effectively protect battery box 240 to help improving the structural strength of skeleton middle section 200, fully ensure the structural stability of skeleton middle section 200. Similarly, in order to improve the lightweight design, the sealing plate 270 is provided with a plurality of third lightening holes 271.

Referring to fig. 1 to 3, the front frame section 100 and the rear frame section 300 are each a truss structure formed by welding a plurality of steel pipes, and the rear frame section 300 is provided with a rear bin 310, and the rear bin 310 is used for centrally placing parts such as a controller, a power steering pump, a storage battery, an air compressor, a gas storage cylinder, a cooling device and the like for ensuring the driving and safety of a vehicle. When the demand of the power distribution amount of the vehicle is high and the arrangement space of the middle framework section 200 is insufficient, the battery compartment assemblies which are matched with each other can be arranged on the rear framework section 300, so that a plurality of battery compartments are properly arranged on the rear framework section 300. Those skilled in the art can specifically design the structure of the middle frame section 300 according to the description of the middle frame section 200, and therefore the detailed description thereof is omitted here. In addition, in order to ensure to realize the design of the full low floor of level in the car from the past to the back, the utility model provides a power battery in the battery box 240 is established ties by a plurality of short electric core batteries and is formed, and the drive scheme of whole car adopts the distributed drive mode.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (10)

1. A chassis framework of a vehicle comprises a framework front section, a framework middle section and a framework rear section which are sequentially connected; the method is characterized in that: the middle section of the framework comprises longitudinal beams and cross beams; the front end and the rear end of the longitudinal beam are respectively connected with the front framework section and the rear framework section; the plurality of cross beams are arranged on two sides of the longitudinal beam at intervals, so that a plurality of battery bins for installing battery boxes are formed on two sides of the longitudinal beam.

2. The chassis frame for a vehicle according to claim 1, wherein: the longitudinal beam comprises a longitudinal beam body, a cavity for distributing pipelines is formed in the longitudinal beam body along the length direction of the longitudinal beam body, and a plurality of first through holes for the pipelines to pass through are formed in the corresponding positions of the two side walls of the longitudinal beam body in each battery compartment.

3. A vehicle chassis frame according to claim 2, wherein: also includes a fixing plate and a supporting piece with a roughly V-shaped structure 21274; the longitudinal beam body is of a groove-shaped structure with a downward opening; the openings of the plurality of supporting pieces are upwards and fixedly arranged in the longitudinal beam body; the fixing plate is fixedly arranged between the supporting piece and the longitudinal beam body and is provided with a plurality of second through holes for pipelines to pass through.

4. The chassis frame for a vehicle according to claim 1, wherein: the framework comprises a framework front section and a framework rear section, and is characterized by further comprising mounting beams arranged at the front end and the rear end of the longitudinal beam, wherein one side of each mounting beam is fixedly arranged on the framework front section or the framework rear section, and a connecting part used for connecting the longitudinal beam is arranged in the middle of the other side of each mounting beam.

5. The chassis frame for a vehicle according to claim 1, wherein: the battery box is arranged in the battery bin, and a plurality of connecting lugs are fixedly arranged on two sides of the bottom of the battery box; and the connecting lugs are detachably arranged at the bottom of the cross beam through bolts.

6. The chassis frame for a vehicle according to claim 5, wherein: the connecting lugs of two adjacent battery boxes are arranged at the bottom of the same cross beam in a staggered manner.

7. The chassis frame for a vehicle according to claim 5 or 6, wherein: the cross beam comprises a reinforcing plate and a v-shaped cross beam body 21274, and a plurality of mounting holes for mounting the bolts are formed in the lower side wall of the cross beam body; the reinforcing plate is fixedly arranged between the upper side wall and the lower side wall of the beam body.

8. The chassis frame for a vehicle according to claim 7, wherein: the reinforcing plate is of a generally wave-shaped configuration.

9. The chassis frame for a vehicle according to claim 1, wherein: the mounting bracket is characterized by further comprising a mounting bracket, wherein one end of the mounting bracket is fixedly arranged at the end part of the cross beam, and the other end of the mounting bracket is fixedly arranged on the side wall of the longitudinal beam.

10. The chassis frame for a vehicle according to claim 1, wherein: the sealing plates are fixedly arranged at the outer side ends of the two adjacent cross beams.

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