CN113879400B - Frame structure suitable for heavy type electrically-driven special vehicle chassis - Google Patents
Frame structure suitable for heavy type electrically-driven special vehicle chassis Download PDFInfo
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- CN113879400B CN113879400B CN202111262615.8A CN202111262615A CN113879400B CN 113879400 B CN113879400 B CN 113879400B CN 202111262615 A CN202111262615 A CN 202111262615A CN 113879400 B CN113879400 B CN 113879400B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
Abstract
The invention discloses a frame structure suitable for a heavy electric drive special vehicle chassis, which comprises a left longitudinal beam and a right longitudinal beam which are symmetrically arranged, wherein the front end of the front longitudinal beam is connected with the left longitudinal beam and the right longitudinal beam, a plurality of cross beam welding parts, a plurality of tail beam welding parts, a plurality of motor support seat welding parts and a plurality of steering reinforcing beam welding parts are respectively used as supports between the left longitudinal beam and the right longitudinal beam, an upper support beam welding part of a power unit and a lower support beam welding part of the power unit are used as middle support beams, and the support beams are used for mounting a battery pack and a controller. According to the novel frame structure, each system interface can follow the traditional vehicle type structure, the arrangement space of the upper system interface is sufficient, the novel frame structure can be used as a universal frame, the frame structure is reasonable in design, novel in form and high in bearing performance, good cross-country performance of a chassis can be guaranteed, and the novel frame structure is very suitable for novel full-electric-drive heavy special vehicles through performance.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to a frame structure suitable for a heavy electric drive special vehicle chassis.
Background
Traditional lorry generally adopts the formula frame that does not bear the weight of, and frame structure generally adopts "C" type longeron and channel-section steel to constitute trapezoidal frame, and special type car is by its bearing quality big, require that stability is high, characteristics that trafficability characteristic is good, generally adopts longeron structural style such as traditional "Z" type, "C" type and "", and alternates between the longeron through integral crossbeam, constitutes whole frame through riveting, spiro union or welded form, provides firm support for the good performance that whole car traveles.
The electricity drives the car as current car field development trend, and the heavy special type automobile of electricity drives has the development demand equally, and the frame that traditional longeron and each crossbeam are constituteed, and the crossbeam cross-section is great leads to the inner space narrow and small relatively, and simultaneously, the problem that still exists is: the wheel-side motor, the battery, the controller and the like required by the electric driving vehicle are difficult to disassemble and assemble, and the maintainability is poor.
Disclosure of Invention
The invention aims to solve the problems of difficult disassembly and assembly and poor maintainability of a wheel-side motor, a battery, a controller and the like of a traditional frame due to limited space, and simultaneously ensures that the frame has good integral structure, high bearing performance and strong universality, and in order to realize the aim, the invention adopts the following technical scheme:
a frame structure suitable for a heavy electric drive special vehicle chassis comprises a front beam, a longitudinal beam, a plurality of transverse beam welding joints and a tail beam welding joint, wherein the front beam is connected to the front end of the longitudinal beam, the longitudinal beam comprises a left longitudinal beam and a right longitudinal beam which are symmetrically arranged, and the left longitudinal beam and the right longitudinal beam are connected and supported through the transverse beam welding joints and the tail beam welding joints;
preferably, left side longeron and right longeron bilateral symmetry set up, for neotype "S" type longeron structure, the longeron uses longeron upper wing board, with longeron outer web, longeron inner web and longeron lower wing board from top to bottom do "S" type shaping of bending, this longeron structural feature lie in longeron lower wing board turn-ups outwards, after the longeron symmetrical arrangement, the frame bottom does not have the inside turn-ups, provides very big facility for the dismouting of wheel limit motor, controller, the dismantlement maintenance of power pack. The upper wing plate of the longitudinal beam, the outer web plate of the longitudinal beam and the upper plate of the inner web plate of the longitudinal beam form a C-shaped space.
According to the frame structure, the front end of the front beam is connected with the left longitudinal beam and the right longitudinal beam, the cross beam welding part, the tail beam welding part, the motor supporting seat welding part and the steering reinforcing beam welding part are respectively used as supports between the left longitudinal beam and the right longitudinal beam, the upper supporting beam welding part of the power unit and the lower supporting beam welding part of the power unit are used as middle supporting beams, and supports are provided for installation of the battery pack and the controller.
Preferably, the inclination angle of the bottom surface of the front beam is the same as the approach angle of the whole vehicle; the front beam comprises a front cross beam, a front beam outer vertical plate, a front beam upper cover plate, a front beam inner vertical plate, a front beam connecting plate and a front beam bottom plate; the top of the front beam outer vertical plate and the top of the front beam inner vertical plate are provided with a front beam upper cover plate, the bottom of the front beam outer vertical plate and the top of the front beam inner vertical plate are provided with a front beam bottom plate, the rear side of the front beam outer vertical plate and the front beam inner vertical plate are provided with a longitudinal front beam connecting plate, the front beam outer vertical plate and the front beam inner vertical plate are respectively connected to a left longitudinal beam and a right longitudinal beam, and the two ends of the front cross beam are respectively inserted into the front beam outer vertical plate and the front beam inner vertical plate, and are symmetrical in front and welded and fixed.
Four square holes are opened to the riser in the front beam, the outer riser of front beam sets up the round hole, rectangular hole, provide the space for the installation of radiator between the riser in two front beams, the square hole, the design in round hole and rectangular hole guarantees the cooling tube circulation, reduce its longitudinal section simultaneously in order to lighten weight, the front beam inserts between frame left longitudinal beam and the right longitudinal beam as whole seam piece, set up two preceding shroudings as upper junction plate fixed connection left longitudinal beam, the plane on right longitudinal beam upper groove steel face and the front beam both ends, the riser is divided to establish both sides location connection front beam both sides outer facade and left longitudinal beam after, riser under the right longitudinal beam outside, and the hole of falling into water is reserved to back riser lower extreme.
Preferably, the cross beam is welded into five pieces which are respectively used as a main cross beam from one bridge to five bridges to connect the left longitudinal beam and the right longitudinal beam, and the cross beam comprises a cross beam cover plate, a cross beam bottom plate, a cross beam vertical plate I, a left cross beam vertical plate II, a right cross beam vertical plate II and two cross beam inner sealing plates; crossbeam riser II of crossbeam seam both sides extends to the longeron and goes up the pterygoid lamina, the outer web of longeron, in the "C" type space that constitutes with web upper portion board in the longeron, the horizontal butt joint of pterygoid lamina on crossbeam apron and the longeron, the crossbeam middle part is inside sunken, the whole bow-shaped pattern that presents of crossbeam, it is middle uncovered to form, this design presents terminal box upper portion space on with the wheel limit motor, the terminal box through this position is debugged after the motor installation of being convenient for, the crossbeam section link up both sides round hole and middle rectangular hole, can supply cooling tube and height, the low-voltage line subsection passes through, run through the frame.
The tail beam is welded at the tail part of the frame and comprises a tail beam cover plate, a front tail beam vertical plate, a rear tail beam vertical plate, a tail beam inner sealing plate and a tail beam bottom plate, wherein the tail beam cover plate, the tail beam vertical plate and the tail beam bottom plate are enclosed into a box body structure; the center of the tail beam vertical plate is perforated, the tail beam vertical plate penetrates through the tail beam inner sealing plate, and meanwhile, a through hole for a circuit to pass through is formed in the tail beam vertical plate. The space of the position of the middle inner sealing plate of the tail beam can be used for arranging a rear axle steering oil cylinder support of a steering system.
Preferably, the motor support seat welded part comprises a support seat bottom plate, the support seat bottom plate is flush with lower wing plates of the left longitudinal beam and the right longitudinal beam, and a large square hole is formed in the middle of the support seat bottom plate, so that a motor can be directly replaced and maintained from the bottom of the motor support seat welded part after the whole vehicle is assembled on the ground; two sides of the bottom plate of the supporting seat are bent upwards and fixed on the longitudinal beams at two sides through screws; four supporting seat vertical plates are vertically arranged on a supporting seat bottom plate, supporting seat cover plates are respectively arranged at the tops of two adjacent supporting seat vertical plates, and holes are formed in the supporting seat bottom plate and the supporting seat cover plates; the frame structure of the supporting seat bottom plate has the advantages that the middle cavity and the opening can reduce the weight of the whole welding piece, and meanwhile, the wheel-side motor can move up and down from the middle cavity, so that the maintainability of the motor is guaranteed.
Preferably, the power unit lower support beam welded joint comprises a concave lower support beam bottom plate arranged at the bottom, two parallel lower supports Liang Liban standing on the lower support beam bottom plate, and a lower support beam cover plate placed on the two lower support beam vertical plates. This power unit lower supporting beam seam bottom surface and frame bottom surface parallel and level, the upper surface provides the support for the group battery installation, and lower supporting beam bottom plate both sides are connected with left longeron of frame, right longeron through the bolt, and the space can supply whole car to fall to the ground after personnel to the group battery inspection maintenance, and the change of the group battery of being convenient for can be dismantled in the power unit lower supporting beam seam. The lower support beam welding parts of the two power units are respectively positioned at the corresponding positions below the upper support beam welding parts of the power units at the front end and the rear end to form a longitudinal frame.
Preferably, the power unit is provided with an upper supporting beam cover plate at the upper side, an upper supporting beam bottom plate at the lower side and an upper supporting beam vertical plate with two middle supports, wherein the two ends of the upper supporting beam welded on the power unit are inserted into the upper space of the longitudinal beam in the same way as the cross beam welded on the power unit, the upper supporting beam cover plate is specifically composed of an upper supporting beam cover plate at the upper side, an upper supporting beam bottom plate at the lower side and an upper supporting beam vertical plate with two middle supports, the two sides of the upper supporting beam vertical plate extend to the upper wing plate of the longitudinal beam, the outer web plate of the longitudinal beam and the upper web plate of the inner web plate of the longitudinal beam form a C-shaped space, the upper supporting beam cover plate is bent, the two sides are horizontally butted with the upper wing plates of the left longitudinal beam and the right longitudinal beam, the middle of the supporting beam welded on the power unit protrudes upwards, the middle part of the power unit is ensured in connection strength at the middle part of the frame, a space is ensured for installing the battery pack, and the high-low voltage wiring harness can pass through the holes at the two sides of the vertical plate.
The steering stiffening beam seam comprises a steering stiffening beam seam I and two steering stiffening beams seam II which have the same structure, the steering stiffening beam seam I is placed above a steering through hole of a first vehicle frame axle, the steering stiffening beam seam II is respectively placed above steering through holes of longitudinal beams at two and four vehicle frame axles, a steering stiffening beam connecting plate is respectively placed on two sides of the steering stiffening beam seam I, two steering stiffening beam vertical plates vertically placed in the middle of the steering stiffening beam seam I and two steering stiffening beam cover plates horizontally placed in the middle of the steering stiffening beam seam I are connected, the whole steering stiffening beam seam is of a flat box-shaped structure, the structural rigidity is good, and the bearing capacity is strong.
According to the novel frame structure, each system interface can follow the traditional vehicle type structure, the arrangement space of the upper system interface is sufficient, the novel frame structure can be used as a universal frame, the frame structure is reasonable in design, novel in form and high in bearing performance, good cross-country performance of a chassis can be guaranteed, and the novel frame structure is very suitable for novel full-electric-drive heavy special vehicles through performance.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a novel S-shaped structural longitudinal beam, wherein flanges of lower wing plates of the longitudinal beam are outward, and after left and right longitudinal beams are symmetrically arranged, the bottom of a frame is not limited by inward flanges, so that the internal installation space of the frame is increased, and the overall maintainability is improved.
2. The cross beams respectively positioned on one bridge to four bridges provided by the invention are welded into a box-type structure, the upper and lower cross beam cover plates and the cross beam bottom plate are formed, the middle of the cross beam cover plates is connected with the cross beam bottom plate through the cross beam vertical plates and the cross beam sealing plates, the whole structure is in an arc shape, and the middle of the cross beam cover plates is provided with a process through hole, so that the installation and debugging of a motor and the pipeline arrangement are met.
3. The motor supporting seat provided by the invention is welded into a frame structure, the two sides and the middle of a supporting seat bottom plate are provided with square holes, the middle of the supporting seat bottom plate is symmetrically provided with supporting seat vertical plates, a supporting seat cover plate is arranged above the vertical plates to form two small box-shaped structures which can sufficiently support and place a wheel-side motor, and one to five bridges are integrally communicated, so that the integral rigidity of a frame is increased.
4. The upper support beam of the power unit provided by the invention is welded into a box-shaped cross beam with an upward convex middle part, the cross beam consists of an upper support beam cover plate, an upper support beam bottom plate, a connecting cover plate and an upper support beam vertical plate of the bottom plate, the convex part ensures the installation space of a battery pack, and holes are formed at two sides to meet the requirement of passing a wiring harness.
6. The lower support Liang Han of the power unit provided by the invention is a flat box-shaped cross beam, a lower support beam bottom plate is arranged at the bottom, the bottom plate is connected with a lower support beam cover plate through a lower support Liang Liban, the structure has strong supporting capacity, a battery pack can be supported at the upper part, two sides of the battery pack are connected with left and right longitudinal beams of a frame through bolts, and the cross beam is detachable.
7. The steering stiffening beam welding I/II provided by the invention is of a flat box-shaped structure, the cover plates and the bottom plate are arranged up and down, the middle part of the steering stiffening beam is connected with the vertical plate, the two sides of the steering stiffening beam are fixed by the connecting plates, and the steering stiffening beam welding I/II is connected with a longitudinal beam of a frame, a steering gear bracket, a vertical arm vertical shaft and the like through bolts to reinforce the local strength of the frame.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an overall layout view of a frame structure provided by the present invention;
FIG. 2 is a top plan view of the frame construction provided by the present invention;
FIG. 3 is a left side elevational view of the frame construction provided by the present invention;
FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 2;
FIG. 5 is a schematic structural view of a front beam provided in the present invention;
FIG. 6 is a schematic view of a beam weld provided by the present invention;
FIG. 7 is a schematic view of a welded structure of an upper support beam of the power unit according to the present invention;
FIG. 8 is a schematic view of a lower support beam weld of the power unit according to the present invention;
FIG. 9 is a schematic view of a motor support welded together according to the present invention;
FIG. 10 is a schematic cross-sectional view of a right side rail provided in accordance with the present invention;
FIG. 11 is a bottom plan view of the frame construction provided by the present invention;
FIG. 12 is a schematic view of the internal structure of the beam weld provided by the present invention;
FIG. 13 is a schematic view of the overall structure of the tail boom according to the present invention;
fig. 14 is a schematic view of the overall structure of the steering reinforcement beam seam I provided by the present invention.
Wherein, according to the reference numbers in the drawings: 1-left longitudinal beam, 101-upper wing plate of longitudinal beam, 102-lower wing plate of longitudinal beam, 103-outer web plate of longitudinal beam, and 104-inner web plate of longitudinal beam;
2-a right longitudinal beam;
3-front beam, 301-front beam, 302-front beam outer vertical plate, 303-front beam upper cover plate, 304-front beam inner vertical plate, 305-front beam connecting plate, 306-front beam bottom plate;
4-beam welding, 401-beam cover plate, 402-beam vertical plates I, 403-beam vertical plates II, 404-beam inner sealing plate and 405-beam bottom plate;
5-tail beam welding, 501-tail beam cover plate, 502-tail beam vertical plate, 503-tail beam inner sealing plate and 504-tail beam bottom plate;
6-a steering stiffening beam welding I, 601-a steering stiffening beam connecting plate, 602-a steering stiffening beam cover plate and 603-a steering stiffening beam vertical plate;
7-welding a steering reinforcing beam II;
8-welding upper support beams of the power unit, 801-an upper support beam cover plate, 802-an upper support beam vertical plate and 803-an upper support beam bottom plate;
9-welding lower support beams of the power unit, 901-a lower support beam bottom plate, 902-a lower support beam cover plate, 903-a lower support Liang Liban;
10-motor support seat welding, 1001-support seat bottom plate, 1002-support seat cover plate and 1003-support seat vertical plate;
11-a steering via; 12-a front closing plate; 13-rear vertical plate; 14-wheel-side motor; 15-battery pack and controller.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The term "weld" in the examples refers to a structure or device formed by welding.
The terms "place" and "place" refer to the position relationship between the components, and the two groups may be fixedly connected by welding or the like, or may be connected by inlaying or splicing.
The invention provides a frame structure with outward flanges of lower wing plates of longitudinal beams, aiming at solving the problem that an electric driven wheel edge motor, a battery, a controller and the like are difficult to disassemble and assemble and poor in maintainability, and one of the reasons is that the flanges of the lower wing plates of the longitudinal beams in various forms are inward.
A frame structure suitable for a heavy electric drive special vehicle chassis comprises a left longitudinal beam 1, a right longitudinal beam 2, five cross beam welding parts 4 and a tail beam welding part 5, wherein the five cross beam welding parts 4 and the tail beam welding part 5 are symmetrically arranged, and the cross beam welding parts 4 and the tail beam welding part 5 are arranged in the middle of each bridge from a front bridge to the back; the steering reinforcement beam welding device is characterized by further comprising five motor support seat welding joints 10 arranged at the lower part of the frame, three power units arranged between the two and the three bridges are provided with an upper support beam welding joint 8 and two power unit lower supports Liang Hange, a steering reinforcement beam welding joint I6 arranged at a position close to one bridge is provided with a steering reinforcement beam welding joint II 7 arranged at a position close to the two and the four bridges, and the two power unit lower supports Liang Hange are respectively arranged at corresponding positions below the support beam welding joints 8 on the power units at the front end and the rear end; and the front beam 3 is inserted into the front ends of the left longitudinal beam and the right longitudinal beam.
The beam welding part and the tail beam welding part are positioned on the upper parts of the left longitudinal beam and the right longitudinal beam, the five motor supporting seat welding parts 10 are respectively positioned at the positions from one bridge to five bridges and are parallel and level with lower wing plates of the left longitudinal beam and the right longitudinal beam, the steering reinforcement beam welding part I6 is positioned on the left longitudinal beam and the right longitudinal beam and above a steering through hole of the first bridge, and the steering reinforcement beam welding part II 5 is positioned on the left longitudinal beam and the right longitudinal beam and above a steering through hole of the second bridge and the fourth bridge.
As shown in fig. 1 and 10, the cross section of each longitudinal beam is of a novel S-shaped longitudinal beam structure, the left longitudinal beam and the right longitudinal beam are symmetrically arranged in shape and position, each longitudinal beam is formed by bending the upper wing plate 101 of the longitudinal beam, the outer web plate 103 of the longitudinal beam, the inner web plate 104 of the longitudinal beam and the lower wing plate 102 of the longitudinal beam from top to bottom in an S shape, the lower wing plate 102 of the longitudinal beam is flanged outwards, and after the left longitudinal beam and the right longitudinal beam are symmetrically arranged, the bottom of the frame has no inner flange, which provides great convenience for the disassembly and assembly of the wheel edge motor 14, the disassembly and maintenance of the controller and the power unit; meanwhile, a reverse C-shaped space formed by the upper wing plate 101 of the longitudinal beam, the outer web plate 103 of the longitudinal beam and the upper plate of the inner web plate 104 of the longitudinal beam can be used for arrangement of electric wires and data wires; the left longitudinal beam is a positive C-shaped space.
As shown in fig. 1, 2, 6, and 12, the beam seam 4 is an arch structure with an inward-recessed middle, and includes a beam cover plate 401, a beam bottom plate 405, a beam vertical plate I402, two front and rear beam vertical plates II 403, and two beam inner sealing plates 404; the upper surface and the lower surface of a beam cover plate 401 and a beam bottom plate 405 are respectively arranged on the upper surface and the lower surface of a beam welded together, the middle of the beam cover plate is connected with the two beam vertical plates II 403 through a beam vertical plate I402, the two beam inner seal plates 404 are connected with the beam vertical plate I402 and the beam vertical plate II 403 in a penetrating way, in order to adapt to the position of a suspension gas spring support lug, the beam vertical plates II 403 on the two sides of the beam welded together extend to an upper wing plate of a longitudinal beam, an outer web of the longitudinal beam and a C-shaped space formed by the upper plate of the inner web of the longitudinal beam, the beam cover plate is horizontally butted with the upper wing plate of the longitudinal beam, 6 multiplied by 30 degree bevels are respectively arranged to ensure the welding quality, the middle part of the beam is inwards sunken from a top view, the middle part of the beam is upwards sunken from a main view, the middle of the beam bottom plate 405 is upwards sunken, and the whole beam is in an arched form, and a middle opening is formed. The crossbeam seam is whole to be box structure, and bearing capacity is high, and five crossbeam seams are located one bridge respectively, two bridges, three bridges, four bridges and five bridges, and the space has been reserved for the terminal box debugging of wheel limit motor through the top to bow-shaped shape, and shrouding 404 link up the round hole of crossbeam riser I, II both sides in the crossbeam to and crossbeam riser I, II's middle rectangular hole, can supply cooling tube and high, the low-voltage line subsection to pass through, the smoothness nature that the subsystem was arranged of being convenient for.
The tail beam is welded and arranged at the tail part of the frame, the structure is shown in fig. 13, and the tail beam welding device comprises a tail beam cover plate 501, a front tail beam vertical plate 502, a rear tail beam vertical plate 502, a tail beam inner sealing plate 503 and a tail beam bottom plate 504, wherein the tail beam cover plate 501, the tail beam vertical plate 502 and the tail beam bottom plate 504 are enclosed to form a box structure, a hole is formed in the center of the tail beam vertical plate, the hole penetrates through the tail beam inner sealing plate 503, and meanwhile, a through hole for a circuit to pass through is formed in the tail beam vertical plate. The space of the position of the middle inner sealing plate of the tail beam can be used for arranging a rear axle steering oil cylinder support of a steering system.
As shown in fig. 1, 2 and 9, the motor support seat seam 10 is designed in a frame structure, and comprises a support seat bottom plate 1001, wherein the support seat bottom plate 1001 is flush with lower wing plates of a left longitudinal beam and a right longitudinal beam, and a large square hole is formed in the middle of the support seat bottom plate, so that a motor can be directly replaced and maintained from the bottom of the motor support seat seam after the whole vehicle is assembled and landed, and two sides of the support seat bottom plate 1001 are bent upwards and fixed on the longitudinal beams on two sides through screws; four supporting seat vertical plates 1003 are vertically arranged on a supporting seat bottom plate 1001, supporting seat cover plates 1002 are respectively arranged at the tops of two adjacent supporting seat vertical plates to form two small box-shaped structures, and holes are formed in the supporting seat bottom plate 1001 and the supporting seat cover plates 1002; this structure enough can bear two round limit motors, and the frame construction of supporting seat bottom plate 1001 cavity and trompil can alleviate the weight of whole seam spare in the middle of it, satisfies the round limit motor simultaneously and moves from top to bottom from the cavity in the middle to guaranteed the maintainability of motor, each bridge supporting seat seam is this structure, connects from beginning to end and connects, for the entire formula, strengthens the whole rigidity of frame.
As shown in fig. 1, 4 and 7, the welding seam 8 of the upper supporting beam of the power unit is a box-shaped cross beam with an upward convex middle part, and is composed of an upper supporting beam cover plate 801 on the upper side, an upper supporting beam bottom plate 803 on the lower side and an upper supporting beam vertical plate 802 of two middle supports, wherein two sides of the upper supporting beam vertical plate 802 extend to an upper wing plate of a longitudinal beam, an outer web plate of the longitudinal beam and a C-shaped space formed by an upper plate of an inner web plate of the longitudinal beam, the upper supporting beam cover plate is bent, two sides are horizontally butted with the upper wing plates of a left longitudinal beam and a right longitudinal beam, and a groove of 6 × 30 degrees is respectively formed to ensure the welding quality.
As shown in fig. 1, 4 and 8, the lower support beam welded joint 9 of the power unit is a box-shaped cross beam, and comprises a concave lower support beam bottom plate 901 arranged at the bottom, two parallel lower supports Liang Liban standing on the lower support beam bottom plate, a lower support beam cover plate 902 placed on two lower supports Liang Liban, the bottom surface of the lower support Liang Hange of the power unit is flush with the bottom surface of the frame, the upper surface provides support for battery pack installation, the two sides are connected with the left longitudinal beam and the right longitudinal beam of the frame through bolts, the space can be used for inspection and maintenance of the battery pack by personnel after the whole vehicle falls to the ground, and the lower support Liang Hange of the power unit can be detached to facilitate replacement of the battery pack. The interval between the welding of the lower supporting beams of the two power units is large, so that a sufficient placing space and a heat dissipation space are provided for the installation of the battery pack at the position, the subsequent maintenance on a battery car is facilitated, and the welding of the lower supporting beams of the battery pack can be disassembled to facilitate the operation.
The two power unit lower supports Liang Hange are respectively positioned at corresponding positions below the support beam welding joints 8 on the power units at the front end and the rear end to form a longitudinal frame.
As shown in fig. 1, 2, 3 and 5, the bottom surface of the front beam 3 is inclined, the inclination angle is 18.5 degrees, and the inclination angle is the same as the approach angle of the whole vehicle, and the front beam 3 comprises a front cross beam 301, a front beam outer vertical plate 302, a front beam upper cover plate 303, a front beam inner vertical plate 304, a front beam connecting plate 305 and a front beam bottom plate 306; the top of the front beam outer vertical plate 302 and the top of the front beam inner vertical plate 304 are provided with a front beam upper cover plate 303, the bottom of the front beam outer vertical plate 302 and the bottom of the front beam inner vertical plate 304 are provided with a front beam bottom plate 306, a longitudinal front beam connecting plate 305 is arranged on the rear side between the front beam outer vertical plate 302 and the front beam inner vertical plate 304, the front beam outer vertical plate 302 and the front beam inner vertical plate 304 are respectively connected to the left longitudinal beam and the right longitudinal beam, and the two ends of the front beam 301 are respectively inserted into the front of the front beam outer vertical plate 302 and the front beam inner vertical plate 304 and are welded and fixed.
The bottom surface slope shape design of riser 302 and riser 304 in the front-axle beam is close the angle in order to adapt to whole car, riser 304 evolution hole in the front-axle beam, riser 302 sets up the round hole outside the front-axle beam, rectangular hole, provide the space for the installation of radiator between two riser in the front-axle beam, guarantee the cooling tube circulation, reduce its longitudinal section in order to lighten weight simultaneously, the front-axle beam inserts between left longeron of frame and the right longeron as whole weldment, two front seal boards 12 in upper portion are put respectively in left longeron 1 and 2 front end inclined planes of right longeron and front-axle beam rear side top, the welding makes its connect the fastening, 3 rear sides of front-axle beam and left longeron 1, get up with back riser 13 welded connection between 2 outer facades of right longeron, 13 bottom division round holes in back riser are used for the front-axle beam to prepare the hole of falling into water.
As shown in fig. 1 and 3, the left longitudinal beam and the right longitudinal beam are respectively provided with a steering through hole 11, and a steering through hole reinforcing ring is arranged in the steering through hole to reinforce the local rigidity of the hole digging section of the longitudinal beam.
As shown in fig. 1, 4 and 14, the one steering reinforcement beam seam I6 and the two steering reinforcement beam seams II 7 are both flat box-shaped structures, the steering reinforcement beam seam I is placed above a steering through hole of a first axle of the frame, and is connected with left and right longitudinal beams of the frame and a steering gear bracket and a follower bracket at the outer side through bolts, the steering reinforcement beam seam II is respectively placed above steering through holes 11 of longitudinal beams at two and four axles of the frame, and is connected with left and right longitudinal beams of the frame and vertical arm vertical shaft supports at the outer side through bolts, and the arrangement is to reinforce the local strength of the frame so as to adapt to the impact force generated by wheel steering to the frame. A steering stiffening beam connecting plate 601 is respectively arranged on two sides of the steering stiffening beam welding I6, the two connecting plates are connected through two vertically-arranged steering stiffening beam vertical plates 603 and two horizontally-arranged steering stiffening beam cover plates 602, the whole body is of a flat box-shaped structure, the structural rigidity is good, and the bearing capacity is strong; the steering reinforcing beam welding joint II 7 is of a box-type structure which is the same as the steering reinforcing beam welding joint I6 in structure.
The longitudinal beam and all welded parts contained in the frame structure are made of high-strength steel plates, and the frame structure has the characteristics of high strength, good weldability, excellent comprehensive mechanical property and the like, and provides priority guarantee for complex road conditions such as off-road, turning, wading, climbing and the like of the heavy special automobile.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A frame structure suitable for a heavy electric drive special vehicle chassis comprises a front beam, a longitudinal beam, a plurality of transverse beam welding joints and a tail beam welding joint, wherein the front beam is connected to the front end of the longitudinal beam, the longitudinal beam comprises a left longitudinal beam and a right longitudinal beam which are symmetrically arranged, and the left longitudinal beam and the right longitudinal beam are connected and supported through the transverse beam welding joints and the tail beam welding joints; the left longitudinal beam is of an S-shaped structure;
the left longitudinal beam is formed by bending an upper wing plate of the longitudinal beam, an outer web plate, an inner web plate and a lower wing plate of the longitudinal beam from top to bottom in an S shape, and a lower wing plate of the left longitudinal beam is flanged outwards; the upper wing plate of the longitudinal beam, the outer web plate of the longitudinal beam and the upper plate of the inner web plate of the longitudinal beam form a C-shaped space;
the inclined angle of the bottom surface of the front beam is the same as the approach angle of the whole vehicle; the front beam comprises a front cross beam, a front beam outer vertical plate, a front beam upper cover plate, a front beam inner vertical plate, a front beam connecting plate and a front beam bottom plate; the top of the front beam outer vertical plate and the top of the front beam inner vertical plate are provided with a front beam upper cover plate, the bottom of the front beam outer vertical plate and the bottom of the front beam inner vertical plate are provided with a front beam bottom plate, the rear side of the front beam outer vertical plate and the front beam inner vertical plate are provided with a longitudinal front beam connecting plate, the front beam outer vertical plate and the front beam inner vertical plate are respectively connected to the left longitudinal beam and the right longitudinal beam, and two ends of the front cross beam are respectively inserted in front of the front beam outer vertical plate and the front beam inner vertical plate symmetrical parts and are welded and fixed;
the beam welding is divided into five parts which are respectively used as a main beam from one bridge to five bridges, connected with the left longitudinal beam and the right longitudinal beam and respectively comprise a beam cover plate, a beam bottom plate, a beam vertical plate I, a left beam vertical plate II, a right beam vertical plate II and two beam inner sealing plates; the vertical plates II of the cross beams on two sides of the welded cross beam extend into a C-shaped space formed by the upper wing plate of the longitudinal beam, the outer web plate of the longitudinal beam and the upper plate of the inner web plate of the longitudinal beam, the cover plate of the cross beam is horizontally butted with the upper wing plate of the longitudinal beam, the middle part of the cross beam is inwards sunken, and the cross beam is integrally in an arched form.
2. The frame structure suitable for the heavy electric special vehicle chassis as claimed in claim 1, wherein a motor support seat welding joint and a steering reinforcement beam welding joint are arranged between the left longitudinal beam and the right longitudinal beam, and an upper support beam welding joint and a lower support beam welding joint of the power unit are used as middle support beams and provide support for installing the battery pack and the controller.
3. The frame structure suitable for the heavy electric drive special vehicle chassis is characterized in that a tail beam is welded at the tail part of the frame and comprises a tail beam cover plate, a front tail beam vertical plate, a rear tail beam vertical plate, a tail beam inner sealing plate and a tail beam bottom plate, wherein the tail beam cover plate, the tail beam vertical plate and the tail beam bottom plate are enclosed into a box body structure; the center of the tail beam vertical plate is perforated, the tail beam vertical plate penetrates through the tail beam inner sealing plate, and meanwhile, a through hole for a circuit to pass through is formed in the tail beam vertical plate.
4. The frame structure suitable for the heavy electric drive special vehicle chassis is characterized in that the motor support seat welded joint comprises a support seat bottom plate, the support seat bottom plate is flush with lower wing plates of the left longitudinal beam and the right longitudinal beam, a square hole is formed in the middle of the support seat bottom plate, two sides of the support seat bottom plate are bent upwards and fixed on the longitudinal beams at two sides; four supporting seat vertical plates are vertically placed on the supporting seat bottom plate, and supporting seat cover plates are respectively placed at the tops of every two adjacent supporting seat vertical plates.
5. The frame structure suitable for the heavy-duty special vehicle chassis for electric drive as claimed in claim 3, wherein the lower support beam welded joint of the power unit comprises a bottom-arranged "concave" type lower support beam bottom plate, two parallel lower supports Liang Liban standing on the lower support beam bottom plate, and a lower support beam cover plate is placed on two lower support beam vertical plates.
6. The frame structure suitable for the heavy electric special vehicle chassis is characterized in that the power unit upper support beam welding joint is composed of an upper support beam cover plate on the upper side, an upper support beam bottom plate on the lower side and an upper support beam vertical plate of two middle supports, two sides of the upper support beam vertical plate extend into a C-shaped space formed by an upper wing plate of a longitudinal beam, an outer web plate of the longitudinal beam and an upper plate of an inner web plate of the longitudinal beam, the upper support beam cover plate is bent, and two sides of the upper support beam cover plate are horizontally butted with the upper wing plates of a left longitudinal beam and a right longitudinal beam.
7. The vehicle frame structure suitable for the heavy electric special vehicle chassis is characterized in that the steering reinforcement beam welding joint comprises a steering reinforcement beam welding joint I and two steering reinforcement beam welding joints II which are identical in structure, the steering reinforcement beam welding joint I is placed above a steering through hole of a vehicle frame one axle, the steering reinforcement beam welding joints II are respectively placed above steering through holes of longitudinal beams at two axles and four axles of the vehicle frame, a steering reinforcement beam connecting plate is respectively placed on two sides of the steering reinforcement beam welding joint I, the two connecting plates are connected through two vertical steering reinforcement beam vertical plates and two horizontal steering reinforcement beam cover plates in the middle, and the whole vehicle frame structure is of a flat box-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262615.8A CN113879400B (en) | 2021-10-28 | 2021-10-28 | Frame structure suitable for heavy type electrically-driven special vehicle chassis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262615.8A CN113879400B (en) | 2021-10-28 | 2021-10-28 | Frame structure suitable for heavy type electrically-driven special vehicle chassis |
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| CN113879400A CN113879400A (en) | 2022-01-04 |
| CN113879400B true CN113879400B (en) | 2022-11-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205131384U (en) * | 2015-12-01 | 2016-04-06 | 陕西重型汽车有限公司 | Solebar and truck solebar |
| JP2016107648A (en) * | 2014-12-01 | 2016-06-20 | いすゞ自動車株式会社 | Frame structure of vehicle |
| CN208085804U (en) * | 2018-03-12 | 2018-11-13 | 北京福田戴姆勒汽车有限公司 | A kind of no auxiliary girder concrete mixing and transporting car lightweight vehicle frame and vehicle |
| CN211167094U (en) * | 2019-09-10 | 2020-08-04 | 森源汽车股份有限公司 | Chassis frame of pure electric commercial vehicle |
| CN213473289U (en) * | 2020-08-17 | 2021-06-18 | 陕西汽车集团有限责任公司 | Special frame for low-speed vehicle |
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2021
- 2021-10-28 CN CN202111262615.8A patent/CN113879400B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016107648A (en) * | 2014-12-01 | 2016-06-20 | いすゞ自動車株式会社 | Frame structure of vehicle |
| CN205131384U (en) * | 2015-12-01 | 2016-04-06 | 陕西重型汽车有限公司 | Solebar and truck solebar |
| CN208085804U (en) * | 2018-03-12 | 2018-11-13 | 北京福田戴姆勒汽车有限公司 | A kind of no auxiliary girder concrete mixing and transporting car lightweight vehicle frame and vehicle |
| CN211167094U (en) * | 2019-09-10 | 2020-08-04 | 森源汽车股份有限公司 | Chassis frame of pure electric commercial vehicle |
| CN213473289U (en) * | 2020-08-17 | 2021-06-18 | 陕西汽车集团有限责任公司 | Special frame for low-speed vehicle |
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| CN113879400A (en) | 2022-01-04 |
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