CN210139897U - Well style of calligraphy front sub vehicle frame - Google Patents

Abstract

The utility model relates to an automobile manufacturing, design field specifically are sub vehicle frame before well style of calligraphy. Each mounting point rigidity is higher, has promoted whole car maneuverability. The auxiliary frame and the vehicle body are flexibly connected through the bushing, vibration from the road surface is effectively prevented, and the comfort of the whole vehicle is improved. The left side beam and the right side beam are respectively arranged at two sides of the front cross beam downwards, and the tail ends of the left side beam and the right side beam are inserted into the head and the tail top of the rear cross beam and are integrally connected into a square or a well shape; wherein: the left side beam and the right side beam are consistent in structure and are mirror images of each other, and comprise a side beam upper plate and a side beam lower plate which are arranged in a covering manner, and a side beam inner cavity is formed in the side beam upper plate and the side beam lower plate after the side beam upper plate and the side beam lower plate are arranged in the covering manner; the rear cross beam comprises a rear cross beam upper piece and a rear cross beam lower piece which are covered and connected, and a rear cross beam inner cavity is formed in the rear cross beam; the rear cross beam is provided with a connecting socket A at the joint of the left side beam and the right side beam.

Description

Well style of calligraphy front sub vehicle frame

Technical Field

The utility model relates to an automobile manufacturing, design field specifically are sub vehicle frame before well style of calligraphy.

Background

With the rapid development of automobiles in China, the competition of the automobile industry is getting bigger and bigger, the dispute about energy is the foremost technical problem at present, so various new energy vehicles continuously appear, the new energy vehicles do not need to independently depend on gasoline and 0 emission, and are also the development direction of future automobiles. The auxiliary frame is provided with a control arm mounting position, a steering gear assembly mounting position, an engine suspension mounting position and a stabilizer bar assembly mounting position, and the auxiliary frame is connected with the assembly and then connected to the vehicle body through bolts, so that vibration transmitted from a road surface is greatly reduced through buffering of the auxiliary frame structure and then transmitted to the vehicle body, and the comfort of the whole vehicle is improved; in addition, the rigidity of the auxiliary frame structure is larger than that of the automobile body, the rigidity of the auxiliary frame structure in suspension connection with the auxiliary frame structure is larger than that of the auxiliary frame structure in direct connection with the automobile body, the adjustment and the calibration are easier, and the rigidity and the controllability of the automobile chassis system are further improved;

the front cross beam, the rear cross beam and the longitudinal beam of the general frame type auxiliary frame are of a structure welded by two stamping parts, more welding seams can be formed by the structure, stress concentration is easily generated at the welding seams, cracking occurs, and the weight also exceeds the standard. Suspension installing support hangs on the rear frame member, the Z of suspension mounting point promotes the difficulty to rigidity, have the condition because of above restriction, can carry out weight collocation to whole car weight because of the continuation of the journey mileage on bearing of car, the matching needs carry out certain adjustment, so the frame type auxiliary frame that has restricted prior art more is used in car technical field, and in order to deal with aforementioned parameter demand adjustment, must further adopt simpler part structure, and the production of being convenient for easily of whole equipment demand, prior art can not satisfy the demand.

Disclosure of Invention

The utility model aims at providing a sub vehicle frame before well style of calligraphy, a lightweight scheme, each mounting point rigidity is higher, has promoted whole car nature controlled. The auxiliary frame and the vehicle body are flexibly connected through the bushing, vibration from the road surface is effectively prevented, and the comfort of the whole vehicle is improved. The system is used in automobiles and serves as a platform product, and contributes to energy conservation and emission reduction of the whole automobile type.

The utility model discloses a realize through following technical scheme: a well-shaped front auxiliary frame comprises a front cross beam, a left side beam, a right side beam and a rear cross beam, wherein the left side beam and the right side beam are respectively arranged at two sides of the front cross beam downwards, and the tail ends of the left side beam and the right side beam are inserted into the head and the tail top of the rear cross beam to be integrally connected into a mouth shape or a well shape; wherein: the left side beam and the right side beam are consistent in structure and are mirror images of each other, and comprise a side beam upper plate and a side beam lower plate which are arranged in a covering manner, and a side beam inner cavity is formed in the side beam upper plate and the side beam lower plate after the side beam upper plate and the side beam lower plate are arranged in the covering manner; the inner cavity of the side beam is vertically provided with at least 1 positioning and mounting pipe A, and the positioning and mounting pipe A is vertically connected with the bottom side of the upper plate of the side beam and the top side of the lower plate of the side beam;

the rear cross beam comprises a rear cross beam upper piece and a rear cross beam lower piece which are covered and connected, and a rear cross beam inner cavity is formed in the rear cross beam; the rear cross beam is provided with a connecting socket A at the joint matched with the left side beam and the right side beam, the connecting socket A is formed by combining an upper piece of the rear cross beam and a lower piece of the rear cross beam which are longitudinally provided with a clamping socket inserting plate from top to bottom into a tube shape, and an opening at the head end is not sealed to form the connecting socket A;

the tail end of the lower plate of the side beam is also provided with a tail fin large plate part, and the tail fin large plate part is provided with a plurality of positioning and mounting pipe holes B;

the arrangement position of the matched positioning installation pipe hole B is that the positioning installation pipe hole A arranged on the rear cross beam is taken as an installation point, the positioning installation pipe B is arranged vertically downwards, the top of the positioning installation pipe B is fixed on the rear cross beam upper piece of the rear cross beam, the positioning installation pipe hole B penetrates through the positioning installation pipe hole C arranged on the side beam upper plate at the same axial line position downwards, the positioning installation pipe hole B penetrates through the positioning installation pipe hole B downwards continuously to reach the positioning installation pipe hole D arranged on the rear cross beam lower piece at the bottommost end, and the positioning installation pipe hole D is fixed by a bolt after being exposed out of the outer side of;

by the structure, the side beam lower plate of the left side beam or the right side beam is inserted into the connecting socket A, then the upper part of the side beam upper plate is covered, the side beam upper plate and the side beam lower plate are covered with the rear cross beam upper plate finally, and the left side beam and the right side beam are connected into the connecting socket A of the rear cross beam through the positioning mounting pipe hole A, the positioning mounting pipe hole B, the positioning mounting pipe hole C and the positioning mounting pipe hole D by the positioning mounting pipe B in sequence and then are fixed by the positioning mounting pipe B.

Preferably, the tail end of the upper side beam plate inserted into the connecting socket A is attached to the inner wall surfaces of the two sides of the lower piece of the rear cross beam, and the lower side beam plate is attached to the bottom of the inner wall of the upper piece of the rear cross beam.

Preferably, the left side beam or the right side beam is of an obliquely arranged structure, the head end of the obliquely arranged structure is the highest, the tail end of the obliquely arranged structure is the lowest, a folded energy absorption groove is formed in the rear position of the position, at least 2cm away from a mounting hole in front of the head end, of the side beam upper plate of the left side beam or the right side beam, a side avoiding groove is formed in the center of the side beam upper plate, a longitudinal beam inner reinforcing plate is further arranged on the rear wall of the side avoiding groove, and a positioning mounting pipe A is arranged at the head end.

Preferably, the left side beam or the right side beam comprises a raised angle part, a connector avoiding groove part and a tail cross beam inserting part, the height of the left side beam or the right side beam gradually decreases from front to back, the angles of the connector avoiding groove part and the tail cross beam inserting part are equal to 0 degree or range from 0 degree to-10 degrees or range from 0 degree to 10 degrees, and the angle of the connector avoiding groove part is set to be 0 degree.

And preferably, a rear cross beam inner support plate is transversely arranged in the inner cavity of the rear cross beam, and the head-to-tail connecting section of the rear cross beam inner support plate is propped against the inner wall of the inner side folding piece at the tail end of the lower plate of the side beam.

Preferably, the head end of the lower piece of the rear cross beam integrally extends to form a vehicle body installation pressure-bearing piece part, and the vehicle body installation pressure-bearing piece part is provided with a vehicle body installation sleeve.

Preferably, the top side of the inner reinforcing plate of the longitudinal beam is also provided with a longitudinal beam lining plate in a buckling connection mode.

Preferably, the head end of the left side beam or the right side beam is provided with an opening clamping piece extending outwards.

Preferably, the rear cross beam lower piece is provided with a positioning pipe C arrangement table in a mode that the interface avoiding groove portion protrudes towards the inner side, the positioning pipe C arrangement table is sleeved with a positioning installation pipe C, and the positioning installation pipe C is arranged obliquely upwards.

Preferably, a folding energy absorption groove is arranged between the head end front mounting hole of the left side beam or the right side beam and the front suspension sleeve supporting tube positioning table in a clamping mode.

As priority the back crossbeam lower piece matches the interior backup pad of back crossbeam and is provided with fagging location stress groove, and fagging location stress groove front end still sets up trapezoidal boss of dodging.

Preferably, the tail end of the upper plate of the side beam is also provided with a claw cover structure part, and the claw cover structure part comprises a tail sealing folding piece folded downwards arranged at the head end of the upper plate of the side beam, and an S folding piece and an arc folding piece arranged at the upper side and the lower side. The two are combined to form a claw cover structure part, and the mounting pipe positioning hole A is arranged on the top sheet of the claw cover structure part.

Preferably, the empennage large plate part comprises a transverse plate and a longitudinal plate which are integrally molded.

Preferably, a positioning and mounting pipe C is also arranged between the upper piece of the rear cross beam and the lower piece of the rear cross beam.

Compared with the prior art, the invention has the beneficial effects that: firstly, this sub vehicle frame is frame type sub vehicle frame, and it is the # -shaped structure of two crosslines, has stronger bearing capacity and bearing capacity, because the additional strengthening of curb girder and rear beam for the front beam can adopt the heavy design that subtracts of thin wall thickness hydraulic line more, and left and right longeron and rear beam adopt towards piece welded structure, has both reduced the weight of product, can satisfy the design target of product again, satisfies the user demand of whole car.

The pit department is dodged to its 2 longeron upper plate control arm installation front point, sets up two reinforcing plates, and the reinforcing plate of connecting longeron upper and lower board is used for promoting the rigidity of this point, and another reinforcing plate pastes at the longeron upper plate inboard, improves the fatigue strength of longeron upper plate, and in addition a longeron welt is used for connecting longeron upper and lower board and control arm installation sleeve pipe, promotes mounting point rigidity. The nuts are directly welded on the outer side of the lower plate of the longitudinal beam, so that the assembly is convenient;

3, the mounting point of the front control arm, the mounting point of the steering engine and the sleeve of the mounting point of the stabilizer bar are all provided with corresponding supporting tubes which are arranged at the positions with convex-concave arrangement, so that the supporting tubes support the whole inner cavity structure, the bearing force is enhanced, the supporting function is realized, and the rigidity of the mounting point is improved;

the front and the rear are suspended with a plurality of positioning mounting pipe structures, the top is a detachable threaded sleeve structure, the supporting structure is convenient to mount, can be randomly spliced or detached, needs are better to thicken the end wall of the thread, and reduces the wall thickness of the non-thread section, so that the static rigidity of the mounting point is effectively improved, and the weight is reduced;

and 5, spot welding and arc welding structures are adopted at the matching positions of the flanging at the rear part of the lower plate of the longitudinal beam and the upper and lower plates of the rear beam, so that hardening generated during welding of the three-layer plate is avoided.

6, a cavity is adopted at the matching position of the rear part of the lower plate of the longitudinal beam and the lower plate of the rear beam, so that the rigidity of a mounting point of a rear bushing of the control arm is improved;

and 7, the longitudinal beam is formed by combining an upper plate and a lower plate, the structure of the upper plate and the lower plate of the longitudinal beam can be more suitable for being inserted into the longitudinal beam at different angles by replacing the structure of the upper plate and the lower plate of the longitudinal beam, thereby the designed angle of the vertical height of the longitudinal beam can be combined to be raised or lowered, the lower vertical height can be adapted, the stamping depth of the concave part can be shallower, namely the longitudinal beam can completely protrude into the middle of the inner part of the cavity of the rear cross beam, the front sub-frame assembly is completely clamped, so that the forming performance of the longitudinal beam stamping part is better, and the strength and the rigidity of the front sub-frame assembly are greatly improved; and the left and right longitudinal beams are welded by the upper and lower plates to form a closed hollow structure, a reinforcing plate is arranged in the front auxiliary frame assembly, so that the front auxiliary frame assembly can absorb collision energy and transmit force conveniently; this preceding sub vehicle frame assembly does benefit to arranging of multiple power assembly under the unchangeable condition of assurance sub vehicle frame minimum ground clearance, improves the platformization and the universalization on chassis.

Drawings

Fig. 1 is a perspective view of the entire structure.

Fig. 2 is an overall side view configuration diagram.

Fig. 3 is a diagram of an exploded view in its entirety.

Fig. 4 shows a structure of the rear cross beam and the connecting socket a arranged on the rear cross beam.

Fig. 5 is an exploded assembly view of the side member as a whole.

Fig. 6 is a schematic diagram of the splicing positions of the side beam, the upper beam and the lower beam.

FIG. 7 is a side elevational view in full of the side beam.

Fig. 8 is a view showing an exploded mounting structure of the rear cross member.

FIG. 9 is a side sill section mounting view.

Detailed Description

The technical scheme of the utility model is specifically described as preferred by the following embodiments in combination with the accompanying drawings:

it should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, and, if describing the housing cavity structure, the housing interior and the housing exterior, the direction of the geometric center of the invention or a specific component thereof, and the connection means indicated in this embodiment are generally welding connections, bolt or screw connections, snap connections, etc. of the prior art, which are well known to those skilled in the art.

As shown in figure 1, the well-shaped front auxiliary frame comprises a front cross beam (1), a left side beam (2), a right side beam (3) and a rear cross beam (4), wherein the left side beam (2) and the right side beam (3) are respectively arranged at two sides of the front cross beam (1) downwards, and the tail ends of the left side beam (2) and the right side beam (3) are inserted into the head and tail tops of the rear cross beam (4) to be integrally connected into a well shape; namely, the auxiliary cars are all in a # -shaped structure as in the prior art, but different from the prior art, the prior art is in seaming welding, the structure is inserted, and after the structure is inserted, the structure is a bolt connecting structure which can be used for replacing a rear cross beam in the future as described in the following;

continuing as shown in FIG. 1, wherein: the left side beam (2) and the right side beam (3) are identical in structure and are mirror images, each side beam comprises a side beam upper plate (5) and a side beam lower plate (6), the side beam upper plate and the side beam lower plate are arranged in a vertically covering mode as shown in figure 2, and a side beam inner cavity (7) as shown in the lower side of the side beam (3) is formed inside the side beam upper plate (5) and the side beam lower plate (6) after being arranged in a vertically covering mode; at least 1 positioning and mounting pipe A (8) is also vertically arranged in the inner cavity (7) of the side beam, and the positioning and mounting pipe A (8) is vertically connected with the bottom side of the upper plate (5) of the side beam and the top side of the lower plate (6) of the side beam; here, the first pipe connecting structure is one of the structures for connecting the rear end structure of the side member and the rear cross member;

continuing to show in fig. 3 left side lower part the rear beam (4) includes rear beam upper (9), rear beam lower (10), the two covers the connection arrangement, this kind of amalgamation connection, than the pipe connection of the prior art more flexible, and he is the plate body directly carries on the mould pressing to get, the cost of manufacture is also low, these two cover bodies that are the concave structure cover each other, just form the rear beam cavity (11) inside it; namely, the lumen structure which is used in the prior art; therefore, the auxiliary frame is a frame type auxiliary frame, the auxiliary frame is a double-transverse-line cross-shaped structure and has stronger supporting capacity and bearing capacity, the front cross beam can adopt a weight reduction design of a thinner-wall thick hydraulic pipe due to the reinforcing structures of the side beams and the rear cross beam, the left longitudinal beam, the right longitudinal beam and the rear cross beam adopt a punching sheet welding structure, the weight of a product is reduced, the design target of the product can be met, and the use requirement of the whole vehicle is met.

As shown in fig. 4, which is a front view of the rear cross beam, it can be clearly seen that the rear cross beam (4) is provided with a connecting socket a (12) at the joint of the left side beam (2) and the right side beam (3), the connecting socket a (12) is formed by combining an upper part and a lower part of a clamping socket insertion plate (13) which are respectively and longitudinally arranged on an upper piece (9) and a lower piece (10) of the rear cross beam into a tube shape, and the opening at the head end is not sealed to form the connecting socket a (12); the insertion opening is a structure for inserting (note that the insertion is a structure which is formed by that a rear cross beam lower sheet (10) covers a tail wing large sheet part (12 a) firstly, then covers a cross beam upper sheet (9) and finally covers the rear cross beam lower sheet (10) and depends on the covering but the side beam is inserted into the rear cross beam) into a left side beam and a rear side beam under the condition that the tail wing large sheet part (12) of the side beam lower sheet is not bent;

as shown in fig. 5, the tail end of the side beam lower plate (6) is further provided with a tail fin large plate part (12 a), and the tail fin large plate part (12 a) is provided with a plurality of positioning installation pipe holes B (13 a); the empennage large plate piece part (12 a) is arranged in an L shape, and is buckled and hooked on the side surface just like the left side structure of the rear cross beam (4), so that the empennage large plate piece part basically cannot be loosened, and the fixing capacity is very high;

as shown in fig. 5 and 7, the installation position of the matching positioning installation tube hole B (13 a) is set with a positioning installation tube hole a (14) set by itself as an installation point on the rear cross beam upper plate (9), a positioning installation tube B (15) is vertically arranged downwards, the top of the positioning installation tube B (15) is fixed on the rear cross beam upper plate (9) of the rear cross beam (4), and the positioning installation tube hole B passes downwards through a positioning installation tube hole C (16) arranged on the side beam upper plate (5) at the same axial position, continues to pass downwards through the positioning installation tube hole B (13 a) to reach a positioning installation tube hole D (17) arranged on the rear cross beam lower plate (10) at the bottommost end, and is fixed by a bolt after being exposed out of the positioning installation tube hole D (17); thus, the hole structure which is fixed and positioned like a nail is arranged at the tail end after the insertion or the sequential covering arrangement is finished, and the hole structure is fixed by using the positioning installation pipe B (15) in the following way

The upper setting is carried over as shown in the figures 3, 5, 6 and 7, a side beam lower plate (6) of a left side beam (2) or a right side beam (3) is inserted into a connecting socket A (12) and then is covered with a side beam upper plate (5), the side beam upper plate (5) and the side beam lower plate (6) are covered with a rear cross beam upper plate (9) at last above the side beam lower plate (6), and the left side beam (2) and the right side beam (3) are connected into the connecting socket A (12) of the rear cross beam through a positioning mounting pipe hole A (14), a positioning mounting pipe hole B (13 a), a positioning mounting pipe hole C (16) and a positioning mounting pipe hole D (17) by a positioning mounting pipe B (15) and then are fixed. The supporting structure is convenient to install, can be randomly spliced or dismantled, needs are met to thicken the thread end wall, the wall thickness of the non-thread section is reduced, the static rigidity of the mounting point is effectively improved, and the weight is reduced.

Preferably, the tail end of the side beam upper plate (5) inserted into the connecting socket A (12) is attached to the inner wall surfaces of the two sides of the rear cross beam lower plate (10), and the side beam lower plate (6) is attached to the bottom of the inner wall of the rear cross beam upper plate (9). That is, a J-shaped structure as shown in fig. 3 is formed, and the hook-like structure has a very high anti-slip capability after being assembled, although not welded, so that the side members are not substantially separated from the rear cross member.

Preferably, the left side beam (2) or the right side beam (3) is of an oblique setting structure, the head end is highest, the tail end is lowest, a folding energy absorption groove (19) is formed in the rear position of the side beam upper plate (5) of the left side beam (2) or the right side beam (3) in the position, away from at least 2cm, of a front mounting hole (18) of the head end, a side avoiding groove (20) is formed in the central position of the side beam upper plate (5), a longitudinal beam inner reinforcing plate (24) is further arranged on the rear wall of the side avoiding groove (20), and a positioning mounting pipe A (8) is arranged at the head end of the longitudinal beam inner reinforcing plate (24). The well beam is not as good as an I-beam in the energy absorption strength of the side beam, so that the energy absorption is strengthened, an energy absorption groove is arranged, the impact of the bottom is broken, the installation pipe at the bottom cannot be broken due to the impact, and the longitudinal beam inner reinforcing plate (24) is arranged to strengthen the integral strength.

Preferably, the left side beam (2) or the right side beam (3) comprises a raised angle part (23), an interface avoidance groove part (21) and a tail cross beam plug part (22), the height of the left side beam or the right side beam gradually decreases from front to back, the angles of the interface avoidance groove part (21) and the tail cross beam plug part (22) are equal to 0 degree or range from 0 degree to-10 degree or range from 0 degree to 10 degree, and the angle of the interface avoidance groove part (21) is set to be 0 degree. The structure can improve the whole flexible absorption capacity on a large scale, and the side beam can avoid the main pressure-bearing point after being impacted, and the force is continuously transmitted, so that the possibility that the side beam is bent by compression is avoided.

A rear cross beam inner supporting plate (25) is transversely arranged in an inner cavity of the rear cross beam preferentially, and the head-to-tail sections of the rear cross beam inner supporting plate (25) are butted against the inner wall of an inner side folding piece (26) at the tail end of the side beam lower plate (6). As shown in figure 3, the structure is ingenious, firstly, two sides of the rear cross beam are completely stepped, cavities at the head and the tail are arranged on the side beams, so that the side beams can transmit impact resistance by using the bottoms of the thick cross beams instead of directly using the front outer wall of the thick cross beam to attack impact force in the traditional method, only the front outer wall of the rear cross beam is completely deformed, but the structure can not fall off at all, at most, only the positioning installation pipe B (15) falls off, only the positioning installation pipe B (15) is additionally arranged, or the positioning installation pipe B (15) is required to be arranged properly to ensure flexibility, and the positioning installation pipe B (15) is ensured to be used for changing stability and impact resistance.

Preferentially, the rear cross beam lower piece (10) is matched with the rear cross beam inner support plate (25) and is provided with a support plate positioning stress groove (33), and the front end of the support plate positioning stress groove (33) is also provided with a trapezoidal avoidance boss (34). The head end of the rear cross beam lower piece (10) integrally extends to form a vehicle body installation pressure-bearing piece portion (27), and the vehicle body installation pressure-bearing piece portion (27) is provided with a vehicle body installation sleeve (28). The mounting point of the front control arm, the mounting point of the steering engine and the mounting point sleeve of the stabilizer bar are all arranged in a convex-concave manner, and corresponding supporting pipes are arranged in the positions, so that the supporting pipes support the whole inner cavity structure, the bearing force is enhanced, the supporting effect is realized, and the rigidity of the mounting point is improved;

preferably, a longitudinal beam lining plate (29) is further arranged on the top side of the longitudinal beam inner reinforcing plate in a buckling connection mode. The stringer inner liner (29) increases the stiffness of the top side of the stringer inner stiffener and also positions the component force front of the stringer inner stiffener.

Preferably, the head end of the left side beam (2) or the right side beam (3) is provided with an opening clamping piece (30) extending outwards. The split clamping pieces are mainly used for increasing the welding area with the front cross beam.

Preferably, the rear beam lower piece (10) is provided with a positioning tube C installation table (31) protruding inwards from the joint avoiding groove part (21), a positioning installation tube C (32) is sleeved on the positioning tube C installation table (31), and the positioning installation tube C (32) is arranged obliquely upwards. The positioning installation pipe C can be inserted with bolts, so that the positioning installation pipe C can be welded to be firmly connected, and can be secondarily firmly connected after the bolts are inserted.

Preferably, a folding energy absorption groove (19) is clamped between the head end front mounting hole (18) of the left side beam or the right side beam and the front suspension sleeve supporting pipe positioning table (36). The folding energy absorption groove (19) is mainly used for firstly breaking the primary stress transmission at the foremost end, and the structure known in the prior art is more difficult to fold if the area of the side beam body is narrower, so that the thickness of the outer wall of the side beam is improved in an equal ratio phase change manner.

Preferably, the tail end of the side beam upper plate (5) is further provided with a claw cover structure part (35), and the claw cover structure part (35) comprises a tail sealing folding piece (39) which is folded downwards and arranged at the head end of the side beam upper plate (5), and an S folding piece and an arc folding piece which are arranged at the upper side and the lower side. The two are combined to form a claw cover structure part (35), and an installation pipe positioning hole A (40) is arranged on the top sheet of the claw cover structure part (35). The part is mainly a covering structure of an upper plate (5) of a side beam, the covering structure is matched with a lower plate of the side beam, the inserted cavity position of a rear cross beam is continuously divided into three cavities, two layers with attached bottoms are formed, the middle part of the rear cross beam traverses one side, and the top of the rear cross beam is provided with a layer of multi-combination cross section structure.

Preferably, the empennage large plate part (12 a) comprises a transverse plate (37) and a longitudinal plate (38) which are integrally molded. Mainly makes the large board piece part of the tail wing extend conveniently.

Preferably, a positioning and mounting pipe C (32) is also arranged between the rear cross beam upper piece (9) and the rear cross beam lower piece (10). The connection of back crossbeam upper plate convenience back crossbeam upper plate to can carry out the upper and lower connection except that location installation pipe C (32) in brand the place ahead after inserting the bolt, the side is connected also very strongly, and the firmest subassembly all sets up in this region moreover, has completely cut off the fracture destructive power of impact force here basically.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A well-shaped front auxiliary frame comprises a front cross beam (1), a left side beam (2), a right side beam (3) and a rear cross beam (4), wherein the left side beam (2) and the right side beam (3) are respectively arranged on two sides of the front cross beam (1) downwards, and the tail ends of the left side beam (2) and the right side beam (3) are inserted into the top and the tail of the rear cross beam (4) and are integrally connected into a square or well shape; the method is characterized in that: the left side beam (2) and the right side beam (3) are identical in structure and are mirror images, and each side beam comprises a side beam upper plate (5) and a side beam lower plate (6), the side beam upper plate and the side beam lower plate are arranged in a covering mode, and a side beam inner cavity (7) is formed in the side beam upper plate (5) and the side beam lower plate (6) after the side beam upper plate and the side beam lower plate are arranged in a covering mode; at least 1 positioning and mounting pipe A (8) is also vertically arranged in the inner cavity (7) of the side beam, and the positioning and mounting pipe A (8) is vertically connected with the bottom side of the upper plate (5) of the side beam and the top side of the lower plate (6) of the side beam;

the rear cross beam (4) comprises a rear cross beam upper piece (9) and a rear cross beam lower piece (10), the rear cross beam upper piece and the rear cross beam lower piece are covered and connected, and a rear cross beam inner cavity (11) is formed in the rear cross beam; a rear cross beam (4) is provided with a connecting socket A (12) at the joint of the left side beam (2) and the right side beam (3), the connecting socket A (12) is formed by combining a rear cross beam upper sheet (9) and a rear cross beam lower sheet (10) into a tube shape from top to bottom through a clamping socket plate (13) which is respectively and longitudinally arranged, and an opening at the head end is not sealed to form the connecting socket A (12);

the tail end of the side beam lower plate (6) is also provided with a tail fin large plate part (12 a), and the tail fin large plate part (12 a) is provided with a plurality of positioning and mounting pipe holes B (13 a);

the arrangement position of the matched positioning installation tube hole B (13 a) takes a positioning installation tube hole A (14) arranged by the upper piece (9) of the rear cross beam as an installation point, a positioning installation tube B (15) is vertically arranged downwards, the top of the positioning installation tube B (15) is fixed on the upper piece (9) of the rear cross beam (4), the positioning installation tube hole C (16) arranged on the upper plate (5) of the side beam at the same axial line position is downwards penetrated, the positioning installation tube hole B (13 a) is continuously downwards penetrated to reach a positioning installation tube hole D (17) arranged on the lower piece (10) of the rear cross beam at the bottommost end, and the positioning installation tube hole D (17) is exposed and then fixed by a bolt;

the side beam upper plate (5) is arranged above and covered after a side beam lower plate (6) of the left side beam (2) or the right side beam (3) is inserted into a connecting socket A (12), the side beam upper plate (5) and the side beam lower plate (6) are covered with each other and then are covered with a rear cross beam upper plate (9) above the side beam lower plate (6), and the left side beam (2) and the right side beam (3) are connected into the connecting socket A (12) of the rear cross beam through a positioning mounting pipe hole A (14), a positioning mounting pipe hole B (13 a), a positioning mounting pipe hole C (16) and a positioning mounting pipe hole D (17) by utilizing a positioning mounting pipe B and then are fixed by the positioning mounting pipe B (15).

2. The # -shaped front subframe according to claim 1, wherein: the tail end of a side beam upper plate (5) inserted into the connecting socket A (12) is attached to the inner wall surfaces of two sides of a rear cross beam lower plate (10), a side beam lower plate (6) is attached to the bottom of the inner wall of a rear cross beam upper plate (9), and a positioning installation pipe C (32) is also arranged between the rear cross beam upper plate (9) and the rear cross beam lower plate (10).

3. The # -shaped front subframe according to claim 1, wherein: left side roof beam (2) or right side roof beam (3) set up the structure for the slant, and the head end height is highest, and the tail end is lowest, and mounting hole (18) set up folding energy-absorbing groove (19) apart from at least 2cm rear position before the head end in curb girder upper plate (5) of left side roof beam (2) or right side roof beam (3), the central point of curb girder upper plate (5) sets up the side and dodges groove (20), and the side dodges groove (20) back wall and still is provided with reinforcing plate (24) in the longeron, the head end of reinforcing plate (24) is provided with location installation pipe A (8) in the longeron.

4. The # -shaped front subframe according to claim 1 or 3, wherein: and a folding energy absorption groove (19) is clamped between the head end front mounting hole (18) of the left side beam or the right side beam and the front suspension sleeve support tube positioning table (36).

5. The # -shaped front subframe according to claim 1 or 3, wherein: the left side beam (2) or the right side beam (3) comprises a raised angle part (23), an interface avoidance groove part (21) and a tail cross beam plug-in part (22), the height of the left side beam and the right side beam gradually decreases from front to back, the angles of the interface avoidance groove part (21) and the tail cross beam plug-in part (22) are equal to 0 degree or range from 0 degree to-10 degrees or range from 0 degree to 10 degrees, and the angle of the interface avoidance groove part (21) is set to be 0 degree.

6. The # -shaped front subframe according to claim 1, wherein: a rear cross beam inner support plate (25) is transversely arranged in the inner cavity of the rear cross beam, and the head-to-tail connecting section of the rear cross beam inner support plate (25) is propped against the inner wall of an inner side folding piece (26) at the tail end of the side beam lower plate (6).

7. The # -shaped front subframe according to claim 1, wherein: the rear cross beam lower piece (10) head end is integrally extended to form a vehicle body installation pressure-bearing piece portion (27), the vehicle body installation pressure-bearing piece portion (27) is provided with a vehicle body installation sleeve (28), the rear cross beam lower piece (10) is matched with the rear cross beam inner support plate (25) and is provided with a support plate positioning stress groove (33), and the front end of the support plate positioning stress groove (33) is further provided with a trapezoid avoiding boss (34).

8. The # -shaped front subframe according to claim 1 or 6, wherein: rear beam lower plate (10) dodge slot part (21) at the interface and set up registration arm C to the inboard arch and set up platform (31), and registration arm C sets up and sets up location installation pipe C (32) on platform (31), and location installation pipe C (32) set up in the slant.

9. The # -shaped front subframe according to claim 1 or 3, wherein: the tail end of the side beam upper plate (5) is also provided with a claw cover structure part (35), and the claw cover structure part (35) comprises a tail sealing folding piece (39) which is folded downwards and arranged at the head end of the side beam upper plate (5), and an S folding piece and an arc folding piece which are arranged at the upper side and the lower side; the two are combined to form a claw cover structure part (35), and an installation pipe positioning hole A (40) is arranged on the top sheet of the claw cover structure part (35).

10. The # -shaped front subframe according to claim 1, wherein: the empennage large plate part (12 a) comprises a transverse plate (37) and a longitudinal plate (38) which are integrally molded.

Images