CN110843918A - Front auxiliary frame of hydraulic forming pipe step combined structure - Google Patents
Front auxiliary frame of hydraulic forming pipe step combined structure Download PDFInfo
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- CN110843918A CN110843918A CN201910838600.8A CN201910838600A CN110843918A CN 110843918 A CN110843918 A CN 110843918A CN 201910838600 A CN201910838600 A CN 201910838600A CN 110843918 A CN110843918 A CN 110843918A
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- 239000003381 stabilizer Substances 0.000 claims abstract description 59
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 46
- 238000004826 seaming Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000009194 climbing Effects 0.000 description 4
- 230000004069 differentiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000245 forearm Anatomy 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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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Abstract
The invention relates to the field of design and manufacture of automobile parts, in particular to a front auxiliary frame of a hydraulic forming pipe step combined structure, which comprises an upper cross beam, a left longitudinal beam, a right longitudinal beam and a lower cross beam, wherein: the upper cross beam is of a hydraulic forming tubular beam structure, and a sleeve beam section is formed by head and tail hydraulic forming and outward expansion or internal pressure; the left longitudinal beam and the right longitudinal beam are consistent in structure and comprise longitudinal beam main bodies and stabilizer bar reinforcing plates, and an upper cross beam connecting pipe is formed by hydraulic forming and cut into a seaming structure matched with the cross section shape of the upper cross beam and welded at the bottom of a sleeve beam section of the upper cross beam; the outer sides of the upper longitudinal pipes of the left longitudinal beam and the right longitudinal beam are inserted into and buckled with the front swing arm mounting bracket, the top surfaces of the upper longitudinal pipes connected to the positions of the swing arm mounting brackets are covered with stabilizer bar reinforcing plates in a welding mode, and the inner sides of the mounting positions of the front swing arm mounting bracket between the left longitudinal beam and the right longitudinal beam or the middle position of the upper longitudinal pipe are connected with the front lower cross beam.
Description
Technical Field
The invention relates to the field of design and manufacture of automobile parts, in particular to a front auxiliary frame of a hydraulic forming pipe step combined structure.
Background
The subframe can be regarded as a framework of the front axle and the rear axle, and is a component of the front axle and the rear axle. The sub-frame is mainly intended to reduce the introduction of road shocks and to increase the rigidity of the suspension system connection, so that the vehicle equipped with the sub-frame feels very solid and compact in the chassis when driven. The setting of the suspension softness of the auxiliary frame also faces an unavoidable contradiction like suspension adjustment. If the sub-frame suspension is designed to be soft, the vibration generated when the automobile can be well isolated to run can be better, but the over-soft sub-frame suspension design can bring large motion deformation when the automobile turns at a high speed, so that the inaccuracy of tire positioning can be caused, and the operation stability of the automobile is reduced. Stiffer subframe suspensions can provide high connection stiffness, but have very limited isolation from vibration noise. Therefore, the core of the auxiliary frame has an intuitive effect on a driver to block vibration and noise and reduce direct entering of the auxiliary frame into a carriage, so that the driver can feel that whether the auxiliary frame of a vehicle is well designed or whether the auxiliary frame is perfectly calibrated or not in a very intuitive way;
the hydraulic forming tubular beams (the longitudinal beams and the transverse beams) in the auxiliary frame can generally obtain excellent low manufacturing cost and the advantages of easy calibration, but the tubular beams are easy to operate in the running process of a vehicle, strong in torsion adaptability, but poor in shock absorption, while the stamping forming beams have wide area, can be loaded more, can ensure the comfort degree in the final design and calibration and simultaneously have the best control performance, but can be generally soft in the whole process if the full hydraulic forming beams are adopted, and the manufacturing price can be improved in contrast, so that the balance is formed between the tubular beams and the maximum optimization point of the demand is found.
Disclosure of Invention
The invention aims to provide a front auxiliary frame with a hydraulic forming pipe step combination structure, which adopts a three-layer step type cross beam distribution mode to gradually differentiate stress, improves the overall comfort and the passing rate of a vehicle body, and obtains the cost performance of optimal use, design price and quality.
The invention is realized by the following technical scheme: a front auxiliary frame of a hydraulic forming pipe step combined structure comprises an upper cross beam, a left longitudinal beam, a right longitudinal beam and a lower cross beam, wherein the upper cross beam and the lower cross beam are arranged in parallel up and down, the left longitudinal beam is arranged on the left side of the upper cross beam and the left longitudinal beam is arranged on the right side of the upper cross beam and the lower cross beam in a splicing and welding mode, the right longitudinal beam is arranged on the right side of the upper cross beam, the left longitudinal beam, the right longitudinal beam and the lower cross beam are connected into a square structure or;
wherein: the upper cross beam is of a hydraulic forming tubular beam structure, the head and the tail of the upper cross beam are hydraulically shaped and are expanded outwards or are internally pressed to form a sleeve beam section, a sleeve seam is arranged at an opening at the tail end of the sleeve beam section, and a sleeve is arranged on the side surface of the sleeve seam;
the left longitudinal beam and the right longitudinal beam are consistent in structure and comprise longitudinal beam main bodies and stabilizer bar reinforcing plates, an upper longitudinal beam pipe is arranged at the head end of each longitudinal beam main body in a bending mode, an upper cross beam connecting pipe is arranged at the top end of each upper longitudinal beam pipe in a vertically upward bending mode, the upper cross beam connecting pipe is formed in a hydraulic forming mode and cut into a seaming structure matched with the cross section shape of the upper cross beam, the seaming structure is welded to the bottom of a sleeve beam section of the upper cross beam, the bending angle of each longitudinal beam main body is 0-35 degrees, the tail end of each longitudinal beam main body is bent outwards, a lower sleeve seam;
the outer sides of upper longitudinal pipes of the left longitudinal beam and the right longitudinal beam are inserted into and buckled with a front swing arm mounting bracket, the top surfaces of the upper longitudinal pipes connected to the positions of the swing arm mounting brackets are covered with stabilizer bar reinforcing plates in a welding manner, and a rear swing arm mounting bracket is inserted into and mounted on the lower end of the longitudinal beam main body and the side surface of the connecting position of the upper cross beam connecting pipe;
the left longitudinal beam and the right longitudinal beam are connected with a front lower cross beam on the inner side of the mounting position of the front swing arm mounting bracket of the left longitudinal beam and the right longitudinal beam or on the inner side of the middle position of the upper longitudinal connecting pipe;
the lower cross beam comprises a top lower cross beam stamping plate and a bottom cross beam stamping plate, the front ends and the rear ends of the top lower cross beam stamping plate and the bottom cross beam stamping plate are bent and spliced to form a cavity structure, and lower cross beam engagement pieces are arranged at the head end and the tail end and are engaged and connected to the inner side of the upper cross beam connecting pipe.
And the top parts of the head end and the tail end of the longitudinal beam main body are preferably provided with longitudinal pipe sleeve mounting seats, the outer wall of the rear end shell of the front swing arm mounting bracket matched with the longitudinal pipe sleeve mounting seats at the head end of the longitudinal beam main body is abutted and buckled, and the outer wall of the front end shell of the rear swing arm mounting bracket is abutted and buckled with the longitudinal pipe sleeve mounting seats at the tail end of the longitudinal beam main body.
Preferably, the climbing and bending angle of the upper longitudinal pipe is equal to the installation angle of the stabilizer bar reinforcing plate, and the climbing and bending angle is parallel to the installation angle of the stabilizer bar reinforcing plate.
Preferably, the swing arm mounting bracket, the stabilizer bar reinforcing plate and the front lower cross beam wrap the left longitudinal beam or the right longitudinal beam from the outer side, the top side and the inner side, and wrap the outer wall of the pipe body of the left longitudinal beam or the right longitudinal beam for at least 300-370 degrees, and the mounting positions of the swing arm mounting bracket, the stabilizer bar reinforcing plate and the front lower cross beam are in the same axial line range.
Preferably, the height difference between the upper cross beam and the front lower cross beam is the length of the stabilizer bar reinforcing plate or the length of the longitudinal beam main body or the distance from the longitudinal tube sleeve mounting seat at the head end position to the longitudinal tube sleeve mounting seat at the tail end position of the longitudinal beam main body.
The diameters of the upper cross beam and the front lower cross beam are equal, the front lower cross beam is of a completely transverse straight structure, and middle cross beam reinforcing plates are welded to the bottoms of the head end and the tail end of the front lower cross beam.
Preferably, the longitudinal distance between the upper cross member and the front lower cross member is equal to 1/3 of the length of the cross section of the upper cross member or equal to the width of the reinforcing plate of the middle cross member.
Preferably, the swing arm mounting bracket comprises a front side front swing arm bracket piece and a rear side front swing arm bracket piece, the section of the front side front swing arm bracket piece is L-shaped, the rear side front swing arm bracket piece is Z-shaped, the upper part of the front side front swing arm bracket piece is turned downwards towards the front side, the bottom side of the front side front swing arm bracket piece is turned outwards towards the rear side, and the swing arm mounting bracket is formed into a square pipe body structure by the front side front swing arm bracket piece and the rear side front swing arm bracket piece.
Preferably, the rear swing arm mounting bracket is of a cross-sectional structure in a shape like a Chinese character 'ji', and a swallow wing plate connected with the rear swing arm mounting bracket is buckled and hung on the outer wall of the top of the left longitudinal beam or the right longitudinal beam.
Preferably, the front lower cross beam is a plate body which is punched into a V-shaped structure or a pipe body which is hydraulically expanded at the bottom into a V-shaped structure or a U-shaped structure, the front lower cross beam is a torsion type main beam and comprises a top plate, a front side plate and a rear side plate which are downwards bent straightly or obliquely along the outer side of the top plate and the rear side, the top plate, the front side plate and the rear side plate are of U-character-shaped bent square or trapezoidal cross-section structures, the bottom of the torsion type main beam is not sealed to form a torsion type main beam open cavity, the front side plate and the rear side plate are outwards expanded by at least 2 degrees to form a torsion beam close opening part, the head end of the torsion beam close opening part is cut to form an arc-shaped or U-shaped or V-shaped torsion beam close opening part snap groove, and a torsion beam reinforcing plate is arranged in an inner cavity of the torsion beam close opening part at the adjacent.
Preferably, when the front lower cross beam is in a V-shaped or U-shaped structure through bottom hydraulic extrusion expansion, a front auxiliary frame stabilizer bar is arranged in a lower cavity of the front lower cross beam, when the upper cross beam is in an expansion type pipe body structure and the front lower cross beam is in a V-shaped or U-shaped structure through bottom hydraulic extrusion expansion, the front lower cross beam is a torsion structure beam, the front lower cross beam comprises a main body head end and a main body tail end of a main beam and is provided with a seam, page-type stabilizer bar supports with the same structure are arranged on the inner sides of the two seams in a mirror image mode, and the two page-type stabilizer bar supports are connected in a suspension mode through a rear axle stabilizer bar; the rear axle stabilizer bar comprises an integrally molded hollow or solid bar body, expansion gravity center heads are arranged at the head end and the tail end of the bar body, positioning rings are sleeved at the tail ends of the expansion gravity center heads, and connecting hole pipes are arranged in the head ends of the expansion gravity center heads in a concave mode.
Preferably, the front lower cross beam and the upper cross beam are expanded into V-shaped shapes, the inner wall of each coating is provided with a noise-proof oil film with the thickness of 0.02cm, and the noise-proof oil films are formed by atomizing and solidifying lubricating oil with the flash point of 170 ℃.
By adopting the technical scheme, the invention has the beneficial effects that: 1. the technical distance between the traditional expanding beam and the punching beam is completely redefined, the expanding beam and the punching beam are mixed, a novel mixed technology body system is determined, the front auxiliary frame with the expanding beam and the punching beam is provided with a more flexible damping adjustment range and a high comfort level in adjustment, and the front auxiliary frame can be easily adjusted into a rigid or soft or a rear auxiliary frame between the rigid or soft auxiliary frame and the rear auxiliary frame through the structure of the lower cross beam; 2. the swing arm mounting bracket, the stabilizer bar reinforcing plate and the front lower cross beam are of a complete 3-point one-line structure, and the structure can completely and efficiently bear the vibration of the swing arm and immediately transmit and eliminate stress when bearing the pressure of the swing arm; 3. the swing arm mounting bracket, the stabilizer bar reinforcing plate and the front lower beam are of a complete 3-point one-line structure or a structure close to complete wrapping and sleeving, and can form a structure similar to an extrusion sleeve, because the swing arm and the front lower beam extrude the 4 integral combined sleeving structures from left to right under the twisting condition, and the swing arm and the front lower beam can form the extrusion structure towards the lower part of the bottom when extruding, so that the avoided complete rigid structure can obtain elastic capacity, and when a single side is accepted, the swing arm reinforcing plate is also suitable for the situation, the extrusion situation can be extruded towards the inner side of the bottom in an arc shape, so that elastic deformation is generated, and the swing arm mounting bracket, the stabilizer bar reinforcing plate and the front lower beam have strong recovery capacity; 4. the bottom is of an outward-expanding shape structure, the external hanging area is large, the area of the front side of the bottom of the vehicle body can be covered in a reply manner, the pressure-bearing stress range is wide, and the comfort level is improved; 5. 2 types of front lower cross beam bodies are commonly used, the stability is very high, the front lower cross beam bodies can be complementary with the main cross beam bodies, the stress of each connecting point of the torsion beam has an inertia releasing function, namely, the main force and the stress transmission structure at the inner arc angle of the torsion type main beam of the side beam are very quick and continuous in transmission, and the fault defect of the prior art is overcome; 6. the sub vehicle frame is a straight J-shaped structure with a front end and a bent rear end, and the mounting point of the swing arm is just arranged at the bent and rising point of the straight structure, so that the stress can be completely extended backwards and tends to the middle of the vehicle body to be differentiated in the longest distance.
Drawings
Fig. 1 is an overall plan view.
Fig. 2 is an overall perspective view.
Fig. 3 is a mounting diagram of the left longitudinal beam or the right longitudinal beam and components thereof.
Fig. 4 is a left side member or a right side member structural view.
Fig. 5 is an installation structure view of an overall front lower beam.
FIG. 6 is a view showing a structure of mounting a reinforcing plate of a lower cross member.
Figure 7 is a diagram of an embodiment of a stamped structural beam.
Fig. 8 is a diagram of an embodiment of a stamped structural beam with a stabilizer bar added.
Fig. 9 is a view of the twisted main beam.
Fig. 10 is a side view of a twist girder.
Fig. 11 is a bottom view of the twist girder.
Fig. 12 is a view of the twist girder.
Fig. 13 is a side view of the torsion beam reinforcing plate.
Fig. 14 is a front subframe stabilizer bar structural view.
Fig. 15 is a front side front swing arm support piece and its combination structure.
Fig. 16 is a top anatomical view of the anterior forearm support plate and its combination.
Fig. 17 is a bottom view of the overall structure.
The transverse beam comprises an upper transverse beam (1), a left longitudinal beam (2), a right longitudinal beam (3), a lower transverse beam (4), a sleeve beam section (5), a sleeve seam (6), a sleeve (7), a longitudinal beam main body (8), a stabilizer bar reinforcing plate (9), an upper connecting longitudinal tube (10), an upper transverse beam connecting tube (11), a lower sleeve seam (12), a front swing arm mounting bracket (13), a torsion beam reinforcing plate (14), a front lower transverse beam (15), a top lower transverse beam stamping plate (16), a bottom transverse beam stamping plate (17), a lower transverse beam seam (18), a longitudinal tube sleeve mounting seat (19), a middle transverse beam reinforcing plate (20), a front side front swing arm bracket piece (21), a rear side front swing arm bracket piece (22), a swallow wing plate (23), a front triangular plate (24), a top plate (1501), a front side piece (1502), a rear side piece (1503), a torsional main beam open cavity (1504), a torsional joint part (1505), The torsion beam joint part outer biting groove (1506), a torsion beam joint part inner cavity (1507), a torsion beam reinforcing plate (1508), a side beam bottom tongue pasting part (1509), a lower inclined plate part (1510), an arch body fork plate part (1511), a fork tongue plate (1512), a side beam stress transmission cavity (1513), a front sub frame stabilizer bar (1514), a page type stabilizer bar bracket (1515), a rear axle stabilizer bar (1516), a rod body (1517), an expansion gravity center head (1518), a positioning ring (1519), a connecting hole pipe (1520), a rod connecting support page (1521), a stabilizer bar sleeve insertion hole (1522), a component force plate (1523) and a stabilizer bar torsion table (1524).
Detailed Description
The technical scheme of the invention is described in detail as the optimization by the embodiment and the attached drawings:
the shape forming and connecting method mainly refers to stretching, bending, die casting, expanding, welding, buckling, screw connection of screws and bolts, and hinged connection of hinged pieces, and is a fixed production manufacturing and process method in the technical field in the prior art, and in the invention, if structural components of the connecting method are not directly explained, one or more of the connecting methods can be adopted, and in the case that the structural components are known by technicians in the prior art, the embodiment is not repeated; the words with equal directions of up, down, left, right and the like in the embodiment mainly refer to the matched directions in the drawings of the specification;
as shown in figure 1, the front auxiliary frame of the hydraulic forming pipe step combined structure comprises an upper cross beam (1), a left longitudinal beam (2), a right longitudinal beam (3) and a lower cross beam (4), wherein the arrangement and setting method is set according to a cross beam; the method comprises the following steps that firstly, an upper cross beam (1), a left longitudinal beam (2) and a right longitudinal beam (3) which are manufactured by expanding the tube body structure are prepared according to the existing tube body front auxiliary frame structure, the positions of interfaces of the left longitudinal beam (2) and the right longitudinal beam (3) are welded completely in a vertical and downward mode at the head end and the tail end of the upper cross beam, the lower ends of the left longitudinal beam (2) and the right longitudinal beam (3) are welded transversely to form a lower cross beam (4), the upper cross beam (1) and the lower cross beam (4) are arranged in an up-and-down parallel mode, and the upper cross beam (1), the left longitudinal beam (2), the right longitudinal beam (3) and the lower cross;
wherein: as shown in the top structures of fig. 2 and 5, the upper cross beam (1) is a hydraulic forming tubular beam structure, the head and the tail of the upper cross beam are bent in the opposite direction of the X-axis direction to form a depression (character structure), the head and the tail of the upper cross beam are subjected to hydraulic shaping again, a sleeve beam section (5) of a transverse flat body clamping structure is formed by internal pressure, a sleeve seam (6) is arranged at the opening of the tail end of the sleeve beam section (5), the sleeve seam (6) can be cut into a structure with an arc-shaped section of the longitudinal beam, then a sleeve (7) is arranged on the side surface of the sleeve seam (6) in an occlusion and welding mode, the sleeve seam is directly occluded when the structure is made into a square-shaped structure, and the top of the longitudinal beam;
as shown in fig. 1 and 3, the left longitudinal beam (2) and the right longitudinal beam (3) have the same structure and comprise longitudinal beam main bodies (8) and stabilizer bar reinforcing plates (9), wherein each longitudinal beam main body (8) is 1 straight or arc-shaped tube body, the head end of each longitudinal beam main body can be bent to 0-35 degrees, namely, a vertical connecting tube (10) integrally extending with the longitudinal beam main body is provided, the arc-shaped structure top of the vertical connecting tube (10) is connected, an upper cross beam connecting tube (11) is arranged by bending the vertical connecting tube (10) from the bent end to the top end of the vertical connecting tube at 90 degrees upwards, the upper cross beam connecting tube (11) is hydraulically formed and cut into a seaming structure matched with the cross section shape of the upper cross beam and is welded at the bottom of a sleeve beam section (5) of the upper cross beam (1), the optimal position is a transition section position of a rigid sleeve beam section (5) which is just changed from a flat body structure to a circular tube, the tail end Y axis of the sleeve is bent by 25 degrees in the opposite direction, namely the whole outer side, the tail end of an opening of the sleeve is cut into a lower sleeve seam (12) with an arc-shaped cut, and the lower sleeve seam (12) is provided with a sleeve (7);
continuing to show in fig. 2 and 3, the outer sides of the upper longitudinal pipes (10) of the left longitudinal beam (2) and the right longitudinal beam (3) are inserted into and buckled with a front swing arm mounting bracket (13), in the prior art, the connecting rod swing arms are connected to the swing arm mounting bracket for connection, and the front sub-frame is naturally each component for guiding and supporting the suspension of the wheel part arranged at the front head of the connected vehicle, in the prior art, the lower front swing arm mounting bracket (13) is connected to the outer side position of the T-shaped connection part of the longitudinal beam and the upper cross beam, so that the maximum bearing capacity and stress differentiation capacity can be achieved, the longitudinal beam and the cross beam are required to be thicker and have larger rigidity requirement, but the comfort of the whole vehicle is greatly influenced, the larger the rigidity is, the noise is improved, the shock absorbing system of the vehicle is poor, and then the weight of the whole sub-frame of the vehicle must be improved, such as increasing the thickness of the beam and tube, and the associated reinforcing components of the support frame, such increased costs may also result in decreased competitiveness;
in view of the technical situation, 3 gradually developed technical structures are adopted, 1. as shown in figure 2, a front swing arm mounting bracket (13) is arranged outside the middle position of an upper joint longitudinal pipe (10) when the front swing arm mounting bracket (13) is moved downwards from the position which is close to an upper cross beam in the past, the distance between the mounting position of the front swing arm mounting bracket (13) of the longitudinal beam and the upper beam is at least 1-0.5 width position of the front swing arm mounting bracket (13), so that the bearing which can be completed after the connecting rod is mounted and connected in the sleeve (7) of the upper beam and the force of the single supporting connecting rod are provided for supporting the connecting rod, and the like, and the sleeve beam section (5) is an external extension structure, therefore, the elasticity is strong, the comfort is improved, and the raised part has a height which is higher than that of the prior art, so that a longer connecting rod can be used on a small vehicle;
2. what has been described above is that the left longitudinal beam (2) and the right longitudinal beam (3) are connected and provided with a front lower cross beam (15) at the inner side of the mounting position of the front swing arm mounting bracket (13) of the left longitudinal beam and the right longitudinal beam or at the inner side of the middle position of the upper longitudinal connecting pipe (10), and the structure needs to be further reinforced, so in the position of the swing arm mounting bracket (13), the top of the vertical connecting pipe (10) can be just matched with the position, the surface of the outer wall of the vertical connecting pipe is covered and welded with a stabilizer reinforcing plate (9), the stabilizer reinforcing plate (9) is a 1 square cover body structure, the whole shape of the cover body structure can be matched with the upper longitudinal connecting pipe (10), generally, the left side, the right side and the rear side of the cover body can be provided with downward locking pieces matched with the vertical connecting pipe (10) and the top sheet structure of the front swing arm mounting bracket (13), namely, as shown in fig. 4, the inner side plate body of the front swing arm mounting bracket (13) and the left side plate body of The stabilizer bar reinforcing plate is erected on the stabilizer bar reinforcing plate (9), so that the stabilizer bar reinforcing plate (9) forms a complete structure for bearing the upper part and the lower part, and the outer part is guided to the inner side across the whole plate body;
3. the third structure is a second upper cross beam structure, a front lower cross beam (15) is connected and arranged on the inner sides of the mounting positions of front swing arm mounting brackets (13) of a left longitudinal beam (2) and a right longitudinal beam (3) or the inner side of the middle position of an upper connecting longitudinal pipe (10), 3 improvement technologies are provided in the improvement, 1) a common round expansion type pipe body which is directly cut end to make a seaming structure as shown in figure 6 is directly used for connecting the front swing arm mounting bracket of the left longitudinal beam (2) and the front swing arm mounting bracket of the right longitudinal beam, and complete force chain connecting capacity is achieved, and the rigidity is low, the elasticity is high, and the comfort of the automobile is very strong because the structure is a ladder-like structure (the upper cross beam and the lower cross beam which have height and distance differences);
2) as shown in figure 7, the first most direct front lower beam (15) is changed from a tube expanding beam into a punching structure beam, the front lower beam (15) is a plate body punched into a U-shaped structure, and the further front lower beam (15) is a torsion type main beam and comprises a top plate (1501), a front side plate (1502) and a rear side plate (1503) which are straightly or obliquely bent downwards along the outer side and the rear side of the top plate, the front side plate and the rear side plate are in a U-character-shaped bent square cross section structure, the bottoms of the top plate, the front side plate and the rear side plate are not sealed to form a torsion type main beam open cavity (1504), torsion beam closing opening parts (1505) are arranged at the head end and the tail end of the torsion type main beam, the front side plate and the rear side plate are outwards expanded by at least 2 degrees, an arc-shaped or U-shaped torsion beam closing opening part engaging groove (1506) is cut at the head end of the torsion beam closing opening part (1505), and a torsion beam opening part adjacent to the rear of the torsion beam closing part is provided with a torsion, the twisted beam joint part outer biting groove (1506) is meshed to the upper longitudinal connecting pipe (10) of the longitudinal beam from the inner side, the structure can greatly improve the front end load capacity of the whole vehicle body, and the auxiliary frame system has an important function of improving the battery load capacity of the whole vehicle and increasing the endurance by utilizing a new energy vehicle; the torsion beam reinforcing plate (1508) is integrally cut and supported by a plane metal plate and comprises a side beam bottom attaching tongue portion (1509) at the head end, a middle inclined lower plate portion (1510) and an arch body fork plate portion (1511) at the tail end, wherein the overall side shape of the torsion beam reinforcing plate is that the side beam bottom attaching tongue portion extends obliquely upwards to reach the inclined lower plate portion, the inclined lower plate portion continues to extend obliquely upwards to reach the arch body fork plate portion which is straight or bent in an arc shape, and the front end of the arch body fork plate portion is bent in an arc shape downwards; a stabilizing rod twisting table (1524) is arranged at the top of the arch body fork plate in a shaping mode, and tongue forking plates (1512) are arranged on two sides of the stabilizing rod twisting table (1524) in a bending mode;
the bottom attaching tongue portion of the side beam of the torsion beam reinforcing plate is transversely arranged at the bottom of the open cavity of the torsion type main beam in parallel with the top plate, the lower oblique plate portion is arranged upwards towards the top plate towards the open cavity of the torsion type main beam, and finally the bottom attaching tongue portion is arranged at the bottom of the top plate in an attaching mode through the arch body fork plate portion, so that the torsion type main beam is distributed at the front end of the inner cavity (1507) of the closed opening portion of the torsion beam to form a side beam stress transmission cavity (1513) with the front end facing the opening of the side;
the fork tongue plate (1512) of the torsion beam reinforcing plate is clamped into the torsion type main beam open cavity (1504) in a manner of matching the space between the front side plate and the rear side plate, and the top of the stabilizing rod torsion table (1511) is attached below the top plate.
3) As shown in fig. 8, when the second improvement is further enhanced, a stabilizer bar structure is added, and the front lower beam (15) is in a structure with a bottom hydraulic-extruded shape in a V-shape or U-shape, a front sub-frame stabilizer bar (1514) is arranged in a torsional main beam open cavity (1504), while the front lower beam (15) is in a structure with a bottom hydraulic-extruded shape in a U-shape, the torsional main beam is also 1 torsional structure beam, the inner cavities (1507) of the left and right head torsional beam closed parts of the front lower beam (15) are like page stabilizer bar supports (1515) with the same structure, and the two page stabilizer bar supports (1515) are connected in a suspension manner by a rear bridge stabilizer bar (1516); the rear axle stabilizer bar (1516) comprises a hollow or solid bar body (1517) which is integrally molded, expansion gravity center heads (1518) are arranged at the head end and the tail end of the bar body (1517), a positioning ring (1519) is sleeved at the tail end of each expansion gravity center head (1518), and a connecting hole pipe (1520) is concavely arranged at the head end of each expansion gravity center head (1518); the page-type stabilizer bar support (1515) comprises a side beam connecting page (1520) and a rod connecting supporting page (1521), the whole body is bent in an L shape or an arc shape, the bottom of the side beam connecting page is transversely provided with the side beam connecting page, the tail end of the side beam connecting page is bent upwards to be provided with the rod connecting supporting page, the rod connecting supporting page is provided with a stabilizer bar sleeve insertion hole (1522), the adjustable stabilizer bar is inserted into the stabilizer bar sleeve insertion hole and is fixed by a lantern ring, so that the page-type stabilizer bar support is arranged at the two side head ends of the adjustable stabilizer bar respectively and is provided with 1; the side beam connecting page of the page type stabilizer bar support and the opening expanding beam part of the main beam are clamped at the top and the bottom of the side beam up and down, so that the lower front lower cross beam (15), the longitudinal beam and the joint type rear axle stabilizer bar group are connected into a whole, the foremost end of the side beam connecting page is provided with a plurality of S-shaped force-dividing sheets (1523), and the force-dividing sheets extend forwards from top to bottom and are used for finely adjusting the stress target. This structure has integrated the benefit of first, second improvement, and the security of great improvement locomotive position has strengthened the torsion differentiation ability of antagonizing about, and the left and right sides collision strength, has protected locomotive engine and the battery package system of being close to the rear especially.
The rear swing arm mounting bracket (14) is inserted and mounted in the connecting position side face of the upper beam connecting pipe (11) and the lower end of the longitudinal beam main body (8), the rear swing arm mounting bracket (14) is a punched sheet structure part in a shape like a Chinese character 'ji', the same structure as that of the rear swing arm mounting bracket in the prior art can be adopted, the wingspans on two sides can be finely adjusted, and the difference is that the rear swing arm mounting bracket (14) in the prior art is arranged in the inner side, but the technology is changed into the outer side, so that the torque force of the inner side is reduced;
jumping to the end as shown in fig. 2 and 5, the bottommost lower cross beam structure, the lower cross beam (4) includes a top lower cross beam stamping plate (16), a bottom cross beam stamping plate (17), there is no other structure, the same as the prior art stamping plate beam, mainly including controlling the width above, the width corresponding to the length of the upper cross beam connecting pipe (11), such as equal to or shorter than 1/4, the front end and the rear end of the two are bent and matched with each other to be spliced into a cavity structure, and the head end and the rear end are provided with lower cross beam biting sheets (18) which are engaged and connected to the inner side of the upper cross beam connecting pipe (11), like the structure shown in the figure, the cavity structure of the stamping plate body structure has enough width, after the rear end is connected, various stresses transmitted from the central structure can be completely accumulated and differentiated to the position, and in the middle of the whole vehicle frame, the arrangement can enhance the bearing and stress differentiation capability, so that the force differentiation and support of the rear swing arm mounting bracket (14) become very easy.
Preferably, longitudinal pipe sleeve mounting seats (19) are arranged at the tops of the head end and the tail end of the longitudinal beam main body (8), the outer wall of the rear end shell of the front swing arm mounting bracket (13) and the longitudinal pipe sleeve mounting seat (19) at the head end of the longitudinal beam main body (8) are matched to be abutted and buckled, and the outer wall of the front end shell of the rear swing arm mounting bracket (14) and the longitudinal pipe sleeve mounting seat (19) at the tail end of the longitudinal beam main body (8) are abutted and buckled. The connection of the upper frame becomes simpler, the acting force is completely concentrated at the central position, and the situation that the bending degree is smaller as in the prior art is avoided, so that the upper frame is suitable for the ladder structure of the front double upper cross beams, and a central connecting rod or a pressure-bearing structure is added;
preferably, the climbing and bending angle of the upper vertical pipe (10) is equal to the installation angle of the stabilizer bar reinforcing plate (9) and the climbing and bending angle is parallel to the installation angle.
As shown in fig. 3, preferably, the swing arm mounting bracket (13), the stabilizer bar reinforcing plate (9) and the front lower cross beam (15) wrap the left longitudinal beam (2) or the right longitudinal beam (3) from the outer side, the top side and the inner side, and wrap at least the tube outer walls of the left longitudinal beam (2) or the right longitudinal beam (3) of 300-370 degrees, and the mounting positions of the swing arm mounting bracket (13), the stabilizer bar reinforcing plate (9) and the front lower cross beam (15) are in the same axial range.
Continuing as shown in fig. 3, the swing arm mounting bracket (13) comprises a front swing arm bracket piece (21) and a rear front swing arm bracket piece (22), the section of the front swing arm bracket piece (21) is in an L shape, the rear front swing arm bracket piece (22) is in a Z-shaped structure, the upper part of the front swing arm bracket piece is turned downwards, the bottom side of the front swing arm bracket piece is turned outwards, a front triangular connecting piece (24) connected with the outer wall of the bottom of the longitudinal beam is formed on the outward turned piece body, in this case, the swing arm mounting bracket (13) is formed into a square tube structure by the front swing arm bracket piece (21) and the rear front swing arm bracket piece (22), and the front and the rear parts are provided with fins to increase the area of a hanging load or a hanging plate. The two sections of structures are improved to form a structure similar to the extrusion sleeve, because the swing arm and the front lower beam extrude the 4 integrally combined nested structures left and right under the twisting condition, and the swing arm and the front lower beam can form an extrusion structure towards the lower part of the bottom when the extrusion is carried out, so that the completely rigid structure is avoided, the elastic capacity can be obtained, and when a single part is accepted, the elastic sleeve is also suitable for the situation, the extrusion condition can be extruded towards the inner side of the bottom in an arc shape, the elastic deformation is generated, and the elastic sleeve has strong recovery capacity;
preferably, the height difference between the upper cross beam (1) and the front lower cross beam (15) is the length of the stabilizer bar reinforcing plate (9) or the length of the longitudinal beam main body (8) or the distance from a head end position longitudinal pipe sleeve mounting seat (19) to a tail end position longitudinal pipe sleeve mounting seat (19) of the longitudinal beam main body (8).
Preferably, the diameters of the upper cross beam (1) and the front lower cross beam (15) are equal, the front lower cross beam (15) is of a completely transversely straight structure, and middle cross beam reinforcing plates (20) are welded to the bottoms of the head end and the tail end of the front lower cross beam (15). As a technical compensation of the first embodiment of the front lower cross member, it is possible to supplement the strength of the bottom connection and the stress transmission capacity, the second and third may not be needed, but may be added with an increase in the overall weight.
Preferably, the longitudinal distance between the upper cross beam (1) and the front lower cross beam (15) is equal to 1/3 of the cross section length or equal to the width of the middle cross beam reinforcing plate (20).
Preferably, the rear swing arm mounting bracket (14) is of a cross-sectional structure in a shape like a Chinese character 'ji', and swallow wing plates (23) on two sides of the rear swing arm mounting bracket are buckled and hung on the outer wall of the top of the left longitudinal beam (2) or the right longitudinal beam (3).
Preferably, the front lower cross beam (15) or the front lower cross beam (15) and the upper cross beam (1) are expanded to be V-shaped, and the inner wall of the front lower cross beam is coated with a noise-proof oil film with the thickness of 0.02cm, wherein the noise-proof oil film is formed by atomizing and solidifying lubricating oil with the flash point of 170 ℃. The noise and abnormal sound of the whole frame can be greatly reduced.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A front auxiliary frame of a hydraulic forming pipe step combined structure comprises an upper cross beam, a left longitudinal beam, a right longitudinal beam and a lower cross beam, wherein the upper cross beam and the lower cross beam are arranged in parallel up and down, the left longitudinal beam is arranged on the left side of the upper cross beam and the left longitudinal beam is arranged on the right side of the upper cross beam and the lower cross beam in a splicing and welding mode, the right longitudinal beam is arranged on the right side of the upper cross beam, the left longitudinal beam, the right longitudinal beam and the lower cross beam are connected into a square structure or;
the method is characterized in that: the upper cross beam is of a hydraulic forming tubular beam structure, the head and the tail of the upper cross beam are hydraulically shaped and are expanded outwards or are internally pressed to form a sleeve beam section, a sleeve seam is arranged at an opening at the tail end of the sleeve beam section, and a sleeve is arranged on the side surface of the sleeve seam;
the left longitudinal beam and the right longitudinal beam are consistent in structure and comprise longitudinal beam main bodies and stabilizer bar reinforcing plates, an upper longitudinal beam pipe is arranged at the head end of each longitudinal beam main body in a bending mode, an upper cross beam connecting pipe is arranged at the top end of each upper longitudinal beam pipe in a vertically upward bending mode, the upper cross beam connecting pipe is formed in a hydraulic forming mode and cut into a seaming structure matched with the cross section shape of the upper cross beam, the seaming structure is welded to the bottom of a sleeve beam section of the upper cross beam, the bending angle of each longitudinal beam main body is 0-35 degrees, the tail end of each longitudinal beam main body is bent outwards, a lower sleeve seam;
the outer sides of upper longitudinal pipes of the left longitudinal beam and the right longitudinal beam are inserted into and buckled with a front swing arm mounting bracket, the top surfaces of the upper longitudinal pipes connected to the positions of the swing arm mounting brackets are covered with stabilizer bar reinforcing plates in a welding manner, and a rear swing arm mounting bracket is inserted into and mounted on the lower end of the longitudinal beam main body and the side surface of the connecting position of the upper cross beam connecting pipe;
the left longitudinal beam and the right longitudinal beam are connected with a front lower cross beam on the inner side of the mounting position of the front swing arm mounting bracket of the left longitudinal beam and the right longitudinal beam or on the inner side of the middle position of the upper longitudinal connecting pipe;
the lower cross beam comprises a top lower cross beam stamping plate and a bottom cross beam stamping plate, the front ends and the rear ends of the top lower cross beam stamping plate and the bottom cross beam stamping plate are bent and spliced to form a cavity structure, and lower cross beam engagement pieces are arranged at the head end and the tail end and are engaged and connected to the inner side of the upper cross beam connecting pipe.
2. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the top of the head end and the tail end of the longitudinal beam main body are both provided with longitudinal pipe sleeve mounting seats, the outer wall of the rear end shell of the front swing arm mounting bracket matched with the longitudinal pipe sleeve mounting seats at the head end of the longitudinal beam main body is abutted and buckled, and the outer wall of the front end shell of the rear swing arm mounting bracket is abutted and buckled with the longitudinal pipe sleeve mounting seats at the tail end of the longitudinal beam main body.
3. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the swing arm mounting support, the stabilizer bar reinforcing plate and the front lower cross beam wrap the left longitudinal beam or the right longitudinal beam from the outer side, the top side and the inner side, and wrap the outer wall of the pipe body of the left longitudinal beam or the right longitudinal beam for at least 300-370 degrees, and the mounting positions of the swing arm mounting support, the stabilizer bar reinforcing plate and the front lower cross beam are in the same axial line range.
4. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the height difference between the upper cross beam and the front lower cross beam is the length of the stabilizer bar reinforcing plate or the length of the longitudinal beam main body or the distance from the longitudinal tube sleeve mounting seat at the head end position to the longitudinal tube sleeve mounting seat at the tail end position of the longitudinal beam main body.
5. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the diameter of entablature and preceding bottom end rail equals, preceding bottom end rail is the straight structure of horizontal completely, and the head and the tail both ends bottom of preceding bottom end rail still welds and is provided with the middle cross beam reinforcing plate.
6. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the swing arm mounting bracket comprises a front side front swing arm bracket piece and a rear side front swing arm bracket piece, the section of the front side front swing arm bracket piece is L-shaped, the rear side front swing arm bracket piece is Z-shaped, the upper part of the front side front swing arm bracket piece is turned downwards towards the front side, the bottom side of the front side front swing arm bracket piece is turned outwards towards the rear side, and the swing arm mounting bracket is formed into a square pipe body structure by the front side front swing arm bracket piece and the rear side front swing arm bracket piece.
7. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the rear swing arm mounting bracket is of a cross-section structure in a shape like a Chinese character 'ji', and a swallow wing plate which is connected and measured is buckled and hung on the outer wall of the top of the left longitudinal beam or the right longitudinal beam.
8. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the front lower cross beam is a V-shaped structure formed by punching a plate body or a V-shaped structure or a U-shaped or U-shaped structure formed by hydraulically expanding a pipe body at the bottom, and is a torsional main beam and comprises a top plate, a front side plate and a rear side plate which are bent straightly or obliquely downwards along the outer side of the top plate and the rear side, wherein the top plate, the front side plate and the rear side plate are of U-shaped bent square or trapezoidal cross-section structures, the bottom of the front lower cross beam is not sealed to form a torsional main beam open cavity, the front side plate and the rear side plate are outwards expanded by at least 2 degrees to form a torsion beam closing opening part, the head end of the torsion beam closing opening part is cut to form an arc-shaped or U-shaped or V-shaped torsion beam closing opening part engaging groove, and a torsion beam reinforcing plate is arranged in an inner cavity of the torsion beam closing opening part at the adjacent rear side of the torsion.
9. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: when the front lower cross beam is in a V-shaped or U-shaped structure through bottom hydraulic extrusion, a front auxiliary frame stabilizer bar is arranged in the lower cavity of the front lower cross beam, when the upper cross beam is in an expanded tubular structure, and when the front lower cross beam is in a V-shaped or U-shaped structure through bottom hydraulic extrusion, the front lower cross beam is a torsion structural beam, the front lower cross beam comprises a main body head end and a tail end of a main beam and is provided with a seam, page-type stabilizer bar supports with the same structure are arranged on the inner sides of the two seams in a mirror image mode, and the two page-type stabilizer bar supports are connected in a suspension-pulling mode through a rear axle stabilizer bar; the rear axle stabilizer bar comprises an integrally molded hollow or solid bar body, expansion gravity center heads are arranged at the head end and the tail end of the bar body, positioning rings are sleeved at the tail ends of the expansion gravity center heads, and connecting hole pipes are arranged in the head ends of the expansion gravity center heads in a concave mode.
10. The front subframe of a hydroformed tube step composite configuration according to claim 1, wherein: the front lower cross beam and the upper cross beam are expanded to be V-shaped, the inner wall of the front lower cross beam and the inner wall of the front upper cross beam are coated with a noise-proof oil film with the thickness of 0.02cm, and the noise-proof oil film is formed by atomizing and solidifying lubricating oil with the flash point of 170 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838600.8A CN110843918A (en) | 2019-09-05 | 2019-09-05 | Front auxiliary frame of hydraulic forming pipe step combined structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838600.8A CN110843918A (en) | 2019-09-05 | 2019-09-05 | Front auxiliary frame of hydraulic forming pipe step combined structure |
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| CN110843918A true CN110843918A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910838600.8A Pending CN110843918A (en) | 2019-09-05 | 2019-09-05 | Front auxiliary frame of hydraulic forming pipe step combined structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100999226A (en) * | 2006-12-31 | 2007-07-18 | 上海中上汽车科技有限公司 | Wireless trolley bus frame unit assemblage |
| JP2014128991A (en) * | 2012-12-28 | 2014-07-10 | Mazda Motor Corp | Rear part vehicle body structure |
| CN109987139A (en) * | 2017-12-29 | 2019-07-09 | 浙江拓为汽车部件有限公司 | A kind of cross beam fore sub frame |
| CN211519648U (en) * | 2019-09-05 | 2020-09-18 | 浙江拓为汽车部件有限公司 | Front auxiliary frame of hydraulic forming pipe step combined structure |
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2019
- 2019-09-05 CN CN201910838600.8A patent/CN110843918A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999226A (en) * | 2006-12-31 | 2007-07-18 | 上海中上汽车科技有限公司 | Wireless trolley bus frame unit assemblage |
| JP2014128991A (en) * | 2012-12-28 | 2014-07-10 | Mazda Motor Corp | Rear part vehicle body structure |
| CN109987139A (en) * | 2017-12-29 | 2019-07-09 | 浙江拓为汽车部件有限公司 | A kind of cross beam fore sub frame |
| CN211519648U (en) * | 2019-09-05 | 2020-09-18 | 浙江拓为汽车部件有限公司 | Front auxiliary frame of hydraulic forming pipe step combined structure |
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