阅读说明：本技术 一种前副车架总成 (Front auxiliary frame assembly ) 是由 祝东 朱最 曹斐 殷俊龙 于 2021-01-07 设计创作，主要内容包括：本发明公开了一种前副车架总成,包括相互连接的上车板和下车板以及塔台,塔台分别与上车板和下车板弹性焊接,上车板和下车板上设有连通的悬置安装孔,悬置安装孔附近设有沉槽,上车板和下车板上还设有套管孔,套管孔周围设有若干凹坑；通过在上车板和下车板与塔台连接的位置通过翻边结构来进行弹性连接,使得连接位置的应力分布较为均匀以及增加了塔台的形变空间,进而提高了连接位置的疲劳寿命。还通过在悬置安装孔与车体连接的反方向上设置沉槽,通过沉槽的形变来提高悬置安装孔的疲劳寿命；通过在套管孔周围设置凹坑,通过沉孔的挤压导致套管孔变形,进而无需进行焊缝连接,从而避免了焊缝产生的疲劳失效,提高了使用寿命。(The invention discloses a front auxiliary frame assembly which comprises an upper vehicle plate, a lower vehicle plate and a tower platform, wherein the upper vehicle plate, the lower vehicle plate and the tower platform are mutually connected; elastic connection is carried out through the flanging structure at the position where the upper sweep and the lower sweep are connected with the tower, so that the stress distribution at the connecting position is relatively uniform, the deformation space of the tower is increased, and the fatigue life of the connecting position is further prolonged. The fatigue life of the suspension mounting hole is prolonged through the deformation of the sinking groove; through set up the pit around the sleeve pipe hole, the extrusion through the counter bore leads to the sleeve pipe hole to warp, and then need not to carry out the welding seam and connect to avoid the fatigue failure that the welding seam produced, improved life.)

1. The utility model provides a preceding sub vehicle frame assembly, includes interconnect's last sweep (1) and lower sweep (2) and pylon (3), its characterized in that: the tower (3) is respectively in elastic welding with the upper vehicle plate (1) and the lower vehicle plate (2), the upper vehicle plate (1) and the lower vehicle plate (2) are provided with communicated suspension mounting holes (102), a sinking groove (106) is arranged near the suspension mounting holes (102), the upper vehicle plate (1) and the lower vehicle plate (2) are further provided with sleeve holes (103), and a plurality of pits (107) are arranged around the sleeve holes (103).

2. The front subframe assembly of claim 1 wherein: go up sweep (1) with sweep (2) down with tower (3) hookup location all is equipped with turn-ups (105), go up sweep (1) with sweep (2) down passes through turn-ups (105) with tower (3) welding.

3. The front subframe assembly of claim 2 wherein: the height of the flanging (105) is 5-15 mm.

4. The front subframe assembly of claim 1 wherein: go up sweep (1) with all be equipped with heavy platform (101) on sweep (2) down, suspension mounting hole (102) are located heavy platform (101) center, it still is equipped with on platform (101) sinks groove (106).

5. The front subframe assembly of claim 4 wherein: the sinking groove (106) is positioned in the reverse direction of the connection of the suspension mounting hole (102) and the vehicle body.

6. The front subframe assembly of claim 1 wherein: the pits (107) are distributed around the sleeve hole (103) in three and uniform ways.

Technical Field

The invention relates to the field of vehicle engineering, in particular to a front auxiliary frame assembly.

Background

The auxiliary frame is a framework of the front axle and the rear axle and is an important component of the front axle and the rear axle. The subframe is not a complete frame but rather a bracket that supports the front and rear axles and the suspension, such that the axles and suspension are connected to the frame through it, and is therefore conventionally referred to as a "subframe", which includes a front subframe and a rear subframe, the front and rear subframes being important stress-bearing components.

The existing front auxiliary frame is mainly formed by welding an upper car plate and a lower car plate and tower platforms on two sides, and meanwhile, a suspension mounting hole is formed between the upper car plate and the lower car plate.

Disclosure of Invention

In view of the above background, the present invention provides a front subframe assembly, which improves the fatigue life of a welding position by providing a flanging structure at the welding position between an upper and a lower vehicle plate and a tower, and improves the deformation amount and the service life of a suspension mounting hole by providing a sink near the suspension mounting hole.

In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a preceding sub vehicle frame assembly, includes interconnect's last sweep and lower sweep and tower platform, the tower platform respectively with go up the sweep with lower sweep elastic weld, go up the sweep with be equipped with the suspension mounting hole of intercommunication on the lower sweep, near suspension mounting hole is equipped with heavy groove, go up the sweep with still be equipped with the cover tube hole on the lower sweep, be equipped with a plurality of pits around the cover tube hole.

Preferably, the connecting positions of the upper vehicle plate and the lower vehicle plate with the tower are provided with flanges, and the upper vehicle plate and the lower vehicle plate are welded with the tower through the flanges.

Preferably, the height of the flanging is 5-15 mm.

Preferably, the upper vehicle plate and the lower vehicle plate are both provided with a sinking platform, the suspension mounting hole is positioned at the center of the sinking platform, and the sinking platform is also provided with the sinking groove.

Preferably, the sinking groove is positioned in the reverse direction of the connection of the suspension mounting hole and the vehicle body.

Preferably, the dimples are three and evenly distributed around the sleeve hole.

The front auxiliary frame is connected with a suspension on an automobile through suspension connecting holes welded on tower platforms on two sides of an upper frame plate and a lower frame plate in the using process, and is connected with an axle through axle connecting holes arranged at the end parts of the upper frame plate and the lower frame plate, and the front end of the auxiliary frame is connected with the automobile body through suspension mounting holes.

When the wheels run on a bumpy road or impact occurs, the wheel shafts transmit the received force to the front auxiliary frame, the tower will then transmit the force to the suspension for damping, thereby reducing the impact on the driver, in the force transmission process, one end of the tower is fixedly connected with the suspension, and the other end of the tower is respectively welded with the upper vehicle plate and the lower vehicle plate, when the force is transmitted to the tower, the connecting positions of the tower, the upper vehicle plate and the lower vehicle plate are compressed and stretched at the same time, thereby causing fatigue failure at the welding position, the connecting positions of the upper sweep and the lower sweep and the tower platform are provided with flanges, the flange is welded with the tower platform, so that the original rigid connection is bent to form elastic connection through the flange, and then sufficient deformation space is available when the tower is deformed under stress, thereby prolonging the fatigue life of the welding positions of the upper sweep and the lower sweep with the tower.

Simultaneously preceding sub vehicle frame still is through suspension mounting hole and body coupling, in the transmission process of power, the suspension mounting hole receives the extrusion force of automobile body all the time, and then lead to the suspension mounting hole to take place fatigue failure along the automobile body anti-direction easily, through set up heavy groove in suspension mounting hole and body coupling's anti-direction, can guarantee when the extrusion takes place for the suspension mounting hole, deformation through heavy groove provides more deformation space, thereby the stress concentration of the contact position of suspension mounting hole has been reduced, the fatigue life of suspension mounting hole is improved.

Preceding sub vehicle frame still is connected with the steering engine through the cover tube hole, current connected mode is the welding, the fatigue performance at the in-service use in-process welding seam position is relatively poor, produce fatigue failure easily, through when steering engine and cover tube hole are connected, set up three evenly distributed's pit around the cover tube hole, the hookup location through the pit lead to the cover tube hole takes place deformation, and then fix a position the steering engine, avoided because the fatigue failure that the welding seam connection produced, the life of cover tube hole has been improved.

The invention has the beneficial effects that: elastic connection is carried out through the flanging structure at the position where the upper sweep and the lower sweep are connected with the tower, so that the stress distribution at the connecting position is relatively uniform, the deformation space of the tower is increased, and the fatigue life of the connecting position is further prolonged.

The fatigue life of the suspension mounting hole is prolonged through the deformation of the sinking groove; through set up the pit around the sleeve pipe hole, the extrusion through the counter bore leads to the sleeve pipe hole to warp, and then need not to carry out the welding seam and connect to avoid the fatigue failure that the welding seam produced, improved life.

Drawings

FIG. 1 is a schematic axial view of the first embodiment of the present invention.

FIG. 2 is a schematic diagram of a second axial structure of the present invention.

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

Fig. 4 is a partially enlarged view of the present invention at a.

FIG. 5 is a schematic view of the invention at B with a partial enlargement.

In the figure: the structure comprises an upper vehicle plate 1, a sinking platform 101, a suspension mounting hole 102, a sleeve hole 103, an axle connecting hole 104, a flange 105, a sinking groove 106, a pit 107, a lower vehicle plate 2, a tower 3 and a suspension connecting hole 301.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.

Embodiments are shown in fig. 1 to 5, a front subframe assembly includes an upper board 1, a lower board 2 and a tower 3, which are connected to each other, the tower 3 is elastically welded to the upper board 1 and the lower board 2, suspension mounting holes 102 are formed in the upper board 1 and the lower board 2 and are communicated with each other, a sinking groove 106 is formed near the suspension mounting holes 102, sleeve holes 103 are further formed in the upper board 1 and the lower board 2, and a plurality of concave pits 107 are formed around the sleeve holes 103.

The connecting positions of the upper vehicle plate 1 and the lower vehicle plate 2 with the tower 3 are both provided with flanges 105, and the upper vehicle plate 1 and the lower vehicle plate 2 are welded with the tower 3 through the flanges 105.

The height of the flanging 105 is 5-15 mm.

The upper vehicle plate 1 and the lower vehicle plate 2 are both provided with a sinking platform 101, the suspension mounting hole 102 is positioned in the center of the sinking platform 101, and the sinking platform 101 is also provided with the sinking groove 106.

The sink 106 is located in the reverse direction of the attachment of the suspension mounting hole 102 to the vehicle body.

The dimples 107 are three and evenly distributed around the sleeve hole 103.

The specific working process is as follows: the front auxiliary frame is connected with a suspension on an automobile through suspension connecting holes 301 welded on the tower platforms 3 at two sides of the upper plate 1 and the lower plate 2 in the using process, and is connected with an axle through axle connecting holes 104 arranged at the end parts of the upper plate 1 and the lower plate 2, and the front end of the auxiliary frame is connected with the automobile body through suspension mounting holes 102.

When the wheels run on a bumpy road or impact occurs, the wheel shafts transmit the received force to the front auxiliary frame, the tower 3 will then transmit forces to the suspension for damping, thereby reducing the impact of the impact on the driver, in the force transmission process, because one end of the tower 3 is fixedly connected with the suspension and the other end is respectively welded with the upper vehicle plate 1 and the lower vehicle plate 2, when the force is transmitted to the tower 3, the connecting positions of the tower 3 and the upper vehicle plate 1 and the lower vehicle plate 2 are compressed and stretched at the same time, thereby causing fatigue failure at the welding position, the flanging 105 is arranged at the connecting position of the upper plate 1, the lower plate 2 and the tower platform 3, the flange 105 is welded with the tower 3, so that the original rigid connection is bent to form elastic connection through the flange 105, and then sufficient deformation space is available when the tower 3 is deformed under stress, thereby prolonging the fatigue life of the welding position of the upper plate 1, the lower plate 2 and the tower 3.

Meanwhile, the front auxiliary frame is connected with the vehicle body through the suspension mounting hole 102, in the force transmission process, the suspension mounting hole 102 is always subjected to extrusion force of the vehicle body, fatigue failure of the suspension mounting hole 102 in the reverse direction of the vehicle body is easily caused, and more deformation spaces can be provided through deformation of the sink 106 when the suspension mounting hole 102 is extruded by arranging the sink 106 in the reverse direction of the connection of the suspension mounting hole 102 and the vehicle body, so that stress concentration of the contact position of the suspension mounting hole 102 is reduced, and the fatigue life of the suspension mounting hole 102 is prolonged.

Preceding sub vehicle frame still is connected with the steering gear through cover tube hole 103, current connected mode is the welding, the fatigue performance at the in-service use in-process welding seam position is relatively poor, produce fatigue failure easily, when being connected through steering gear and cover tube hole 103, set up three evenly distributed's pit 107 around cover tube hole 103, the hookup location that leads to cover tube hole 103 through pit 107 takes place deformation, and then fix a position the steering gear, the fatigue failure because the welding seam is connected and is produced has been avoided, the life of cover tube hole 103 has been improved.