CN219790287U

CN219790287U - Girder assembly, chassis and engineering vehicle

Info

Publication number: CN219790287U
Application number: CN202320224620.8U
Authority: CN
Inventors: 吴武华; 尤丽刚; 马彦清
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-10-03
Anticipated expiration: 2033-02-15

Abstract

The utility model relates to the technical field of engineering vehicles, in particular to a girder assembly, a chassis and an engineering vehicle. The girder assembly comprises two longitudinal beams and a plurality of cross beams, the cross beams are connected between the two longitudinal beams at intervals, the two longitudinal beams and any two adjacent cross beams are encircled to form mounting positions, and the mounting positions are arranged at intervals along the length direction of the longitudinal beams. According to the utility model, the plurality of cross beams form a plurality of mounting positions along the length direction of the two longitudinal beams, each battery pack is arranged in the corresponding mounting position, the battery packs do not occupy additional space, the battery packs are directly fixed on the adjacent cross beams or longitudinal beams without additionally arranging mounting frames, the vehicle weight can be effectively reduced, meanwhile, the adjacent cross beams and longitudinal beams can provide protection for the battery packs, the risk of collision or impact of the battery packs is reduced, the defects of poor arrangement mode safety and large occupied space of the battery packs on the electric engineering vehicle in the prior art are effectively solved, and the safety of the battery packs is improved.

Description

Girder assembly, chassis and engineering vehicle

Technical Field

The utility model relates to the technical field of engineering vehicles, in particular to a girder assembly, a chassis and an engineering vehicle.

Background

The electric engineering vehicle is driven by electric power, and the electric engineering vehicle is provided with a plurality of battery packs which occupy more space because the electric engineering vehicle bears larger load, so that the electric quantity of the battery is larger, and the arrangement of the battery packs has important influence on the utilization of the whole vehicle space, the protection of the thermal runaway propagation of the battery and the like.

At present, the battery pack of the electric engineering vehicle is generally arranged on the chassis, the battery pack is fixed by arranging the mounting frame on the chassis, the mounting frame is required to be designed independently according to the structure of the battery pack, the mounting frame is limited in protection of the battery pack and can increase the weight of the whole vehicle, and therefore the problem that the safety is poor and the occupied space is large exists in the existing battery pack arrangement mode.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects of poor safety and large occupied space of a battery pack arrangement mode on an electric engineering vehicle in the prior art, thereby providing a girder assembly, a chassis and the engineering vehicle.

In order to solve the above problems, the present utility model provides a girder assembly, including two stringers, the girder assembly further including: the plurality of crossbeams are connected between the two longitudinal beams at intervals, the two longitudinal beams and any two adjacent crossbeams surround to form mounting positions, the plurality of mounting positions are arranged at intervals along the length direction of the longitudinal beams, and each mounting position is suitable for mounting a battery pack.

Optionally, a guide hole is formed in the longitudinal beam, and the installation position is communicated with the outer side of the longitudinal beam through the guide hole.

Optionally, a first fireproof heat insulating member is arranged on both side walls of each beam.

Optionally, a first fireproof heat-insulating member is sprayed or adhered on the outer wall of each beam, and/or the first fireproof heat-insulating member is made of asbestos, mica or aerogel.

The utility model also provides a chassis comprising: the girder assembly and the battery pack are correspondingly arranged in the installation position of the girder assembly.

Optionally, the battery pack is provided with a pressure release part, and the pressure release part and the diversion holes of the longitudinal beams are correspondingly arranged.

Optionally, a drainage tube is further arranged between the diversion hole and the outlet of the corresponding pressure relief piece.

Optionally, at least one communication hole is formed in each beam, two adjacent mounting positions are communicated through the communication holes, two adjacent battery packs are connected through a wire harness, and the wire harness is arranged in the corresponding communication hole in a penetrating mode.

Optionally, a second fireproof heat-insulating piece is further arranged on the outer wall of the wire harness.

The utility model also provides an engineering vehicle, which comprises: the chassis is provided with the chassis.

The utility model has the following advantages:

1. the multiple cross beams form multiple installation positions along the length direction of the two longitudinal beams, each battery pack is arranged in the corresponding installation position, the battery packs cannot occupy additional space, the battery packs are directly fixed on the adjacent cross beams or longitudinal beams without additionally arranging an installation frame, the vehicle weight can be effectively reduced, meanwhile, the adjacent cross beams and longitudinal beams can provide protection for the battery packs, the risk that the battery packs are collided or impacted is reduced, the defects that the arrangement mode safety of the battery packs on the electric engineering vehicle is poor and the occupied space is large in the prior art are effectively overcome, and the safety of the battery packs is improved.

2. Every two installation positions are separated through a crossbeam, and a first fireproof heat insulation piece is arranged on the outer wall of each crossbeam so as to realize physical insulation and thermal insulation between adjacent battery packs, and when one battery pack is out of control, heat can be effectively blocked and delayed to be transmitted to the adjacent battery pack.

3. At least one communication hole is formed in each beam, two adjacent mounting positions are communicated through the communication holes, and the weight reduction is achieved while the structural strength of the frame body is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates a three-dimensional schematic view of a girder assembly according to a first embodiment of the present utility model;

FIG. 2 illustrates an exploded schematic view of the girder assembly of FIG. 1;

FIG. 3 shows a schematic view of a cross beam of the girder assembly of FIG. 1;

fig. 4 shows a three-dimensional schematic of a girder assembly according to a second embodiment of the present utility model.

Reference numerals illustrate:

10. a frame body; 11. a cross beam; 111. a communication hole; 12. a longitudinal beam; 121. a deflector aperture; 13. a mounting position; 14. a connecting plate; 20. a battery pack; 21. and (5) a pressure release part.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1 to 3, the girder assembly of the present embodiment includes two longitudinal beams 12 and a plurality of cross beams 11, the plurality of cross beams 11 are connected between the two longitudinal beams 12 at intervals, the two longitudinal beams 12 and any adjacent two cross beams 11 are surrounded to form mounting positions 13, the plurality of mounting positions 13 are arranged at intervals along the length direction of the longitudinal beams 12, and each mounting position 13 is suitable for mounting one battery pack 20.

By applying the girder assembly of the embodiment, the plurality of cross beams 11 form the plurality of mounting positions 13 along the length direction of the two longitudinal beams 12, each battery pack 20 is arranged in the corresponding mounting position 13, the battery pack 20 does not occupy additional space, the battery pack 20 is directly fixed on the adjacent cross beam 11 or the longitudinal beam 12 without additionally arranging a mounting frame, the vehicle weight can be effectively reduced, meanwhile, the adjacent cross beam 11 and the adjacent longitudinal beam 12 can provide protection for the battery pack 20, the risk that the battery pack 20 is collided or impacted is reduced, the defect that the arrangement mode of the battery pack on an electric engineering vehicle in the prior art is poor in safety and large in occupied space is effectively solved, and the safety of the battery pack 20 is improved.

Specifically, each battery pack 20 may be directly fixed to the longitudinal beam 12 or may be fixed to the connecting plate 14, and both ends of each cross beam 11 are fixedly connected to the corresponding longitudinal beam 12 through the connecting plate 14.

Specifically, a plurality of crossbeams 11 and two longerons 12 are unanimous with the support body 10 structure of current present engineering vehicle, and longeron 12 is C type structure, and every longeron 12 is close to one side of crossbeam 11 and is equipped with the opening, and the both ends of every crossbeam 11 are all connected with longeron 12 of both sides through connecting plate 14, and battery package 20 passes through fastening part and connecting plate 14 fixed connection all around, is equipped with the through-hole that supplies fastening part to wear to establish on the bottom plate of battery package 20, is equipped with the mating holes that runs through connecting plate and correspond the through-hole on the connecting plate 14.

It will be appreciated that, as an alternative embodiment, the stringers 12 may be hollow beams and beams of other structures, the cross-beams 11 may be fixedly attached directly to the stringers 12 without the provision of the connection plates 14, and the battery pack 20 may be directly attached to the stringers 12 or the cross-beams 11.

In this embodiment, each two mounting locations 13 are separated by a beam 11, and a first fireproof heat-insulating member is disposed on the outer wall of each beam 11 to realize physical and thermal insulation between adjacent battery packs, so that when one battery pack 20 is out of control, heat can be effectively blocked and delayed from being transmitted to the adjacent battery pack 20.

In this embodiment, the outer wall of each beam 11 is sprayed with or bonded with a first fireproof heat-insulating member, and the first fireproof heat-insulating member is made of asbestos, mica or aerogel, which is common in material and convenient to set. It will be appreciated that, as an alternative embodiment, the first fireproof heat insulating member may be a high temperature resistant heat insulating coating sprayed on the surface, so as to have a heat insulating effect.

The utility model also provides a chassis comprising: the girder assembly and the battery pack are correspondingly arranged in the installation position 13 of the girder assembly.

In this embodiment, at least one pressure release member 21 is disposed on each battery pack 20 installed in the installation location 13, and when the internal pressure of each battery pack 20 increases, the pressure of the battery pack 20 is not excessively high due to the pressure release member 21 through the pressure release member 21, and meanwhile, the high-temperature combustible smoke inside the battery pack 20 can be discharged, so as to prevent the explosion of the battery pack 20.

Specifically, the specific number of the pressure release members 21 is not limited, and may be one or a plurality of pressure release members, and may be changed according to the specific specification of the battery pack 20, and the pressure release members 21 may be explosion-proof valves or pressure release valves, so as to perform the pressure release and explosion-proof functions.

In this embodiment, the pressure release member 21 is disposed on the side of the battery pack 20 facing the longitudinal beam 12, the position of the longitudinal beam 12 corresponding to the pressure release member 21 is provided with a diversion hole 121, the installation position 13 is communicated with the outer side of the frame 10 through the diversion hole 121, the outlet of the pressure release member 21 is disposed corresponding to the diversion hole 121, the pressure inside the battery pack 20 is released through the pressure release member 21, the released high-temperature flue gas can be discharged to the outer side of the frame 10 through the diversion hole 121, the high-temperature flue gas is prevented from being accumulated inside the frame 10, the adjacent battery packs are prevented from being influenced to overheat and out of control, and the thermal runaway can be further prevented from being propagated and spread. It will be appreciated that the pressure release member 21 may be disposed upward or downward, and the side member 12 does not need to be provided with a diversion hole 121, so that the pressure release member 21 directly discharges the high-temperature flue gas.

Specifically, in order to ensure that the high-temperature flue gas can be effectively discharged and rapidly cooled, the setting position of the diversion hole 121 should be determined according to the setting positions of the components around the actual frame body 10, the outer side of the diversion hole 121 should avoid cables, electric devices and the like, so as to prevent the discharged high-temperature flue gas from affecting the same, meanwhile, the outer side of the diversion hole 121 should be as unobscured as possible, when the battery pack 20 fails, fire-fighting rescue workers can inject cold water into the battery pack 20 through the diversion hole 121, and the thermal runaway of the battery pack 20 can be effectively controlled as soon as possible.

In this embodiment, a drainage tube is further disposed between the pressure release member 21 and the corresponding flow guiding hole 121, and an outlet of the pressure release member 21 is communicated with the flow guiding hole 121 through the drainage tube, so that when the distance between the pressure release member 21 and the flow guiding hole 121 is large, the drainage tube can play a role in drainage to ensure the pressure release effect of the pressure release member 21.

In this embodiment, at least one communication hole 111 is provided on each beam 11, and two adjacent mounting positions 13 are communicated through the communication hole 111, so that the structural strength of the frame body 10 is ensured while the weight is reduced.

Specifically, the specific number of the communication holes 111 may be changed according to the need, and may be one or a plurality. It is understood that the communication hole 111 may not be provided in order to secure structural strength of the cross member 11.

In this embodiment, two adjacent battery packs 20 are connected by a wire harness, the wire harness is threaded in the corresponding communication hole 111, the wire harness includes a high-low voltage cable and a cooling pipeline for connecting each battery pack 20, and the wire harness does not occupy additional space and can be protected by the frame 10.

In this embodiment, the second fireproof heat insulation member is further disposed on the outer wall of the wire harness, so that the high-voltage wire harness is prevented from melting when one battery pack 20 is in thermal runaway, and the high-voltage wire harness is directly contacted with the frame body 10 to cause short circuit, so that other battery packs 20 are also in thermal runaway. Specifically, the second fireproof heat insulating member is a heat insulating belt of various forms such as a mica tape wound around the outer surface of the wire harness.

In this embodiment, the engineering vehicle is a dump truck, a sprinkler truck, a trailer, or the like.

Example two

As shown in fig. 4, the chassis of the second embodiment is different from that of the first embodiment in that whether an additional battery pack 20 is provided at the upper end of the frame 10, and in the second embodiment, a plurality of battery packs 20 are additionally fixed at the upper end of the frame 10 to increase the electric quantity.

In this embodiment, a plurality of additionally-added battery packs 20 are arranged on the frame body 10 below the cab, 2 battery packs 20 are added above the frame body 10, and the added battery packs utilize the space below the cab, so that the influence on the whole vehicle loading space is small. It should be noted that the installation position shown in fig. 3 is merely an illustration, and the actual installation position may be changed according to the actual situation.

Specifically, the additionally arranged battery packs 20 are fixed on the upper end surfaces of the longitudinal beams 12 or the connecting plates 14, no additional design support is needed, and fireproof heat insulation materials are further arranged between the upper battery pack 20 and the lower battery pack 20 so as to realize heat insulation of the upper battery pack and the lower battery pack.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects:

1. the length direction that a plurality of crossbeams 11 follow two longerons 12 forms a plurality of installation positions 13, and every battery package 20 sets up in the installation position 13 that corresponds, and battery package 20 can not occupy extra space, and battery package 20 directly fixes need not additionally to set up the mounting bracket on adjacent crossbeam 11 or longeron 12, can effectively reduce the car weight, and adjacent crossbeam 11 and longeron 12 can provide the protection for battery package 20 simultaneously, reduce the risk that battery package 20 received collision or striking, have improved the security of battery package 20.

2. Each battery pack 20 installed in the installation position 13 is provided with at least one pressure release piece 21, the pressure in the battery pack 20 is released through the pressure release piece 21, the released high-temperature flue gas can be discharged to the outer side of the frame body 10 through the flow guide holes 121, the high-temperature flue gas is prevented from being gathered in the frame body 10, the adjacent battery packs are prevented from being influenced and overheated and out of control, and the thermal runaway can be further restrained from spreading and spreading.

3. Every two installation positions 13 are separated through one beam 11, and a first fireproof heat insulation piece is arranged on the outer wall of each beam 11 so as to realize physical insulation and thermal insulation between adjacent battery packs, and when one battery pack is out of control, heat can be effectively blocked and delayed from being transmitted to the adjacent battery pack 20.

4. The outer wall of the wire harness is also provided with a second fireproof heat-insulating piece, so that the high-voltage wire harness shell is prevented from being melted due to high temperature when one battery pack 20 is in thermal runaway, and the high-voltage wire harness is in direct contact with the frame body 10 to cause short circuit, so that other battery packs are in thermal runaway.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A girder assembly comprising two stringers (12), characterized in that the girder assembly further comprises:

a plurality of crossbeams (11), a plurality of crossbeam (11) interval connection is two between longeron (12), two longeron (12) with arbitrary adjacent two crossbeam (11) are encircled and are formed installation position (13), a plurality of installation position (13) are followed longeron (12) length direction interval sets up, every installation position (13) are suitable for installing a battery package (20), guide hole (121) have been seted up on longeron (12), installation position (13) are passed through guide hole (121) with the outside intercommunication of longeron (12).

2. A girder assembly according to claim 1, wherein a first fire-resistant insulation is provided on both side walls of each of the girders (11).

3. The girder assembly according to claim 2, wherein the outer wall of each cross beam (11) is sprayed with or glued with the first fire-proof heat-insulating element and/or the first fire-proof heat-insulating element is made of asbestos, mica or aerogel.

4. A chassis, comprising: a girder assembly according to any one of claims 1 to 3 and a battery pack correspondingly provided in the mounting location (13) of the girder assembly.

5. Chassis according to claim 4, characterized in that the battery pack (20) is provided with a pressure relief piece (21), the pressure relief piece (21) being arranged in correspondence with the flow guiding hole (121) of the longitudinal beam (12).

6. Chassis according to claim 5, characterized in that a drainage tube is also provided between the diversion aperture (121) and the outlet of the corresponding pressure relief piece (21).

7. Chassis according to claim 4, characterized in that each of said cross beams (11) is provided with at least one communication hole (111), adjacent two of said mounting locations (13) being connected by said communication holes (111), adjacent two of said battery packs (20) being connected by a wire harness, said wire harness being threaded in the corresponding communication hole (111).

8. The chassis of claim 7, wherein a second fire-resistant insulation is further provided on an outer wall of the harness.

9. An engineering vehicle, comprising: the chassis of any one of claims 4 to 8.