CN210971273U - MIG welded aluminum alloy frame sub vehicle frame - Google Patents
MIG welded aluminum alloy frame sub vehicle frame Download PDFInfo
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- CN210971273U CN210971273U CN201921591964.2U CN201921591964U CN210971273U CN 210971273 U CN210971273 U CN 210971273U CN 201921591964 U CN201921591964 U CN 201921591964U CN 210971273 U CN210971273 U CN 210971273U
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Abstract
The utility model provides a MIG welded aluminum alloy frame sub vehicle frame, including aluminum alloy sub vehicle frame main part, aluminum alloy sub vehicle frame main part includes front beam, back beam, sets up left longeron and the right longeron in the left and right sides of front beam and longitudinal beam, and left longeron includes the left front longitudinal beam, the left front installing support of lower swing arm and the left back longeron that connect gradually, and left front longeron links to each other with front beam MIG welding; the left rear longitudinal beam comprises a square pipe part with a front opening and a rear opening and a positioning plate extending rightwards, and the positioning plate is arranged on the right side of the bottom of the square pipe part; the top of the left end of the rear cross beam is provided with an extension strip extending leftwards, the left side wall of the extension strip and the rear cross beam are respectively abutted against the top surface and the right side wall of the left rear longitudinal beam, and the rear cross beam and the positioning plate are respectively provided with a positioning hole for positioning when the left rear longitudinal beam is connected with the rear cross beam. This patent all is equipped with limit structure in the junction of each part, is convenient for realize the relative position between each part spacing, and then the deformation volume among the control welding process.
Description
Technical Field
The utility model relates to an automobile parts technical field, concretely relates to sub vehicle frame.
Background
The auxiliary frame is one of important structural members in an automobile chassis system, and is a connecting structure connected with parts such as a vehicle body, a suspension, a steering and the like. The auxiliary frame on the whole vehicle mainly has the functions of supporting chassis parts such as a suspension, steering and suspension, reducing the transmission of vibration on the road surface to the vehicle body and improving the comfort of the vehicle; meanwhile, the connection rigidity and strength of the suspension are improved, so that the modularization of automobile assembly is realized, and the whole automobile assembly process is reduced.
At present, the auxiliary frame and the aluminum alloy auxiliary frame which are mainly made of steel and subjected to stamping welding are divided according to adopted materials in the market. The steel stamping and welding auxiliary frame is widely used at present, but the defects of heavy weight, complex process, difficulty in quality control and the like generally exist; the aluminum alloy auxiliary frame has the advantages of light weight, high stability of extrusion size, simple technological process, corrosion resistance and the like, and meets the national lightweight requirement.
Each part of current aluminum alloy sub vehicle frame generally is the welding and links to each other, and the relative positioning of aluminum alloy sub vehicle frame between each part when the welding realizes the location of each part through the welding frock, lacks relative spacing structure between the part of sub vehicle frame, is difficult for guaranteeing the joint effect in later stage and guarantees the welding strength in later stage.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a MIG welded aluminum alloy frame sub vehicle frame, it is spacing that the part of having solved current sub vehicle frame realizes the location between the part through the welding frock, and the not good technical problem of relative spacing effect between each part.
The technical scheme of the utility model is that: MIG welded aluminum alloy frame sub vehicle frame, including an aluminum alloy sub vehicle frame main part, aluminum alloy sub vehicle frame main part includes front beam, back beam, sets up left longeron and the right longeron in the left and right sides of front beam and longitudinal beam, left longeron includes the left front longeron, the left front installing support of lower swing arm and the left back longeron of connecting in proper order from the front to the back, right longeron includes the right front longeron, the right front installing support of lower swing arm and the right back longeron of connecting in proper order from the front to the back, its characterized in that, the breach that is used for imbedding the arris portion of front beam is offered to the front end of left front beam, be equipped with in the breach and be used for supporting the support bar of front beam, and left front long;
the front end of the left front mounting bracket of the lower swing arm is provided with two limiting plates which are arranged up and down, a gap between the two limiting plates is an insertion part for inserting the rear end part of the left front longitudinal beam, and the insertion part is inserted with the rear end part of the left front longitudinal beam and is connected with the rear end part of the left front longitudinal beam in an MIG welding way;
the left rear longitudinal beam comprises a square pipe part with a front opening and a rear opening and a positioning plate extending rightwards, and the positioning plate is arranged on the right side of the bottom of the square pipe part;
the right side wall of the square tube part and the positioning plate are enclosed to form a positioning groove for being embedded into the rear cross beam;
the top of the left end of the rear cross beam is provided with an extension strip extending leftwards, the extension strip and the left side wall of the rear cross beam are respectively abutted against the top surface and the right side wall of the left rear longitudinal beam, and the rear cross beam and the positioning plate are respectively provided with a positioning hole for positioning when the left rear longitudinal beam is connected with the rear cross beam;
the left rear longitudinal beam is connected with the rear cross beam through MIG welding;
the rear end of the left front mounting bracket of the lower swing arm is provided with two limiting ribs which are arranged up and down, and a gap between the two limiting ribs is a positioning groove body used for inserting the joint of the left rear longitudinal beam and the rear cross beam;
the distance between the left end parts of the two limiting ribs is smaller than the distance between the right end parts of the two limiting ribs;
and the left rear longitudinal beam and the rear cross beam are connected with the rear end MIG of the lower swing arm left front mounting bracket in a welding mode.
This patent is through the structure of the junction of optimizing each part of sub vehicle frame, all is equipped with limit structure (also be the breach that the aforesaid was mentioned, limiting plate, locating plate and spacing muscle) in the junction of each part, is convenient for realize the relative position between each part spacing, and then the deformation volume among the control welding process. Through stop gear's setting, can reduce the load that the welding seam bore, improve overall structure's intensity, and then guarantee joint strength and connection stability between each part.
And the connecting structure of each part of the right longitudinal beam, the front cross beam and the rear cross beam is the same as the left longitudinal beam. Therefore, detailed description is not given.
Preferably, the lower swing arm left front mounting bracket comprises a frame with both left and right openings, and reinforcing ribs for two cavities which are respectively arranged in front and back of an inner cavity of the frame are fixed in the frame;
the wall thickness of the front end of the frame is 6mm, and the front end of the frame and the reinforcing ribs are respectively provided with a through hole for a bolt for locking the front mounting bush of the lower swing arm to pass through;
a nut box for fixing a square nut is welded and fixed on the periphery of the rear side of the reinforcing rib, which is provided with the through hole, the nut box and the reinforcing rib form an accommodating cavity for accommodating and fixing the square nut, and the square nut is in threaded connection with the bolt;
the nut box comprises a front side plate, a rear side plate, a left side plate and a right side plate which are respectively arranged around the periphery of the front side, the rear side, the left side and the right side of the nut;
gaps exist among adjacent side plates in the front side plate, the rear side plate, the left side plate and the right side plate;
the front side plate and the right side plate are connected with the reinforcing ribs in a welding mode.
This patent is convenient for to have seted up the through-hole through the wall thickness of optimizing the frame front end, directly realizes passing of bolt, has avoided the pressure to rivet this process of steel sleeve pipe, reduces the part, and when reducing the pressure and rivet, to the structural deformation that the part caused and to the destruction of material and near welding seam, reduce the fracture risk of vehicle driving in-process. On the other hand, square nut passes through the nut box to be fixed in the strengthening rib outside, compares heavy desk-top square nut, reduces the appearance of the condition of swing arm abnormal sound.
Further preferably, the automobile body structure further comprises a left front automobile body bracket and a right front automobile body bracket which are arranged on the left side and the right side of the front cross beam in a left-right mirror symmetry manner;
the right end part of the left front vehicle body bracket is provided with a U-shaped socket with an opening at the front end, the rear end and the right end;
the U-shaped socket is a socket used for being inserted into the left end part of the front cross beam;
the left front vehicle body support is spliced with the left front vehicle body support and connected with the left front vehicle body support in an MIG welding mode.
The connection strength of the two is convenient to realize.
Preferably, a reinforcing plate is welded and fixed on the lower swing arm left front mounting bracket and the lower swing arm right front mounting bracket;
the reinforcing plate is welded and fixed at an opening of the front side cavity close to the rear cross beam in the frame.
The fixing of the left front mounting bracket of the lower swing arm is convenient to realize.
Further preferably, the rear frame further comprises a reinforcing cross beam, the reinforcing cross beam is arranged behind the rear cross beam, and the left end and the right end of the reinforcing cross beam are respectively connected with the left rear longitudinal beam and the right rear longitudinal beam in a welding mode.
The whole bearing strength of the auxiliary frame is convenient to guarantee.
Preferably, a left middle vehicle body bracket and a right middle vehicle body bracket are welded and fixed on the lower swing arm left front mounting bracket and the lower swing arm right front mounting bracket;
mounting holes for mounting the left middle vehicle body support and the right middle vehicle body support to a vehicle body are formed in the left middle vehicle body support and the right middle vehicle body support, and the center distance between the mounting holes of the left middle vehicle body support and the right middle vehicle body support is 937mm-957 mm;
mounting holes for mounting the rear cross beam to a vehicle body are formed in the left end and the right end of the rear cross beam, and the center distance between the mounting holes in the left end and the right end of the rear cross beam is 602-622 mm;
the center distance between the left middle vehicle body bracket and the mounting hole at the left end of the rear cross beam is 361-381 mm;
the left front vehicle body support and the right front vehicle body support are provided with mounting holes for mounting to a vehicle body, and the center distance of the mounting holes of the left front vehicle body support and the right front vehicle body support is 980-1000 mm;
the center distance between the left front body support and the mounting hole at the left end of the rear cross beam is 795-815 mm.
This patent is through the mutual position relation between six mounting holes of injecing and automobile body, is convenient for guarantee installation intensity.
When the size is smaller than the control range by 10mm, the overall mode, rigidity and strength of the auxiliary frame are not changed greatly, but the maximum stress at the rear support of the swing arm of the hand piece is changed from 178.85MPa to 215.2MPa, the stress is improved by 20 percent, and the potential cracking risk exists in the process of integrating the durability of a road test and the real driving process; when the size is larger than the control range by 10mm, the first-order torsional mode of the auxiliary frame is reduced from 97.9Hz to 95.3Hz by 2%; the NVH performance of the whole vehicle is not improved.
Drawings
Fig. 1 is an exploded view of the present invention;
fig. 2 is an exploded view of the present invention from another perspective;
fig. 3 is a schematic structural view of the present invention;
fig. 4 is another schematic structural diagram of the present invention.
In the drawing, 1 is a front cross beam, 2 is a rear cross beam, 3 is a reinforcing cross beam, 4 is a left front vehicle body bracket, 5 is a left front longitudinal beam, 6 is a lower swing arm left front mounting bracket, 7 is a left middle vehicle body bracket, 8 is a left rear longitudinal beam, 9 is a right front vehicle body bracket, 10 is a right front longitudinal beam, 11 is a lower swing arm right front mounting bracket, 12 is a right middle vehicle body bracket, 13 is a square nut, 14 is a nut box, 15 is a right rear longitudinal beam, A is a first welding position, B is a second welding position, C is a third welding position, D is a fourth welding position, E is a fifth welding position, F is a sixth welding position, G is a seventh welding position, H is an eighth welding position, I is a ninth welding position, J is a tenth welding position, K is an eleventh welding position, L is a twelfth welding position, M is a thirteenth welding position, N is a fourteenth welding position, O is a fifteenth welding position, P is a sixteenth welding position, Q is a seventeenth welding position, and R is an eighteenth welding position.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
In specific embodiment 1, referring to fig. 1 to 4, an MIG welded aluminum alloy frame subframe includes an aluminum alloy subframe main body, the aluminum alloy subframe main body includes a front cross member 1, a rear cross member 2, a left longitudinal beam and a right longitudinal beam disposed on left and right sides of the front cross member 1 and the longitudinal cross member, the left longitudinal beam includes a left front longitudinal beam 5, a left front mounting bracket 6 of a lower swing arm and a left rear longitudinal beam 8 sequentially connected from front to rear, and the right longitudinal beam includes a right front longitudinal beam 10, a right front mounting bracket 11 of the lower swing arm and a right rear longitudinal beam 15 sequentially connected from front to rear, and is characterized in that a notch for embedding a corner portion of the front cross member 1 is formed at the front end of the left front cross member 1, a support strip for abutting against the front cross member 1 is disposed in the notch, and the left front longitudinal beam 5 is connected with the; the front end of the left front mounting bracket 6 of the lower swing arm is provided with two limiting plates which are arranged up and down, a gap between the two limiting plates is an insertion part for inserting the rear end part of the left front longitudinal beam 5, and the insertion part is inserted with the rear end part of the left front longitudinal beam 5 and is connected with the rear end part of the left front longitudinal beam by MIG welding; the left rear longitudinal beam 8 comprises a square pipe part with a front opening and a rear opening and a positioning plate extending rightwards, and the positioning plate is arranged on the right side of the bottom of the square pipe part; the right side wall of the square tube part and the positioning plate are enclosed to form a positioning groove for being embedded into the rear cross beam 2; the top of the left end of the rear cross beam 2 is provided with an extension strip extending leftwards, the extension strip and the left side wall of the rear cross beam 2 are respectively abutted against the top surface and the right side wall of the left rear longitudinal beam 8, and the rear cross beam 2 and the positioning plate are both provided with positioning holes for positioning when the left rear longitudinal beam 8 is connected with the rear cross beam 2; the left rear longitudinal beam 8 is connected with the rear cross beam 2 through MIG welding; the rear end of the left front mounting bracket 6 of the lower swing arm is provided with two limiting ribs which are arranged up and down, and a gap between the two limiting ribs is a positioning groove body used for inserting the joint of the left rear longitudinal beam 8 and the rear cross beam 2; the distance between the left end parts of the two limiting ribs is smaller than the distance between the right end parts of the two limiting ribs; the left rear longitudinal beam 8 and the rear cross beam 2 are connected with the rear end MIG of the left front mounting bracket 6 of the lower swing arm in a welding mode. This patent is through the structure of the junction of optimizing each part of sub vehicle frame, all is equipped with limit structure (also be the breach that the aforesaid was mentioned, limiting plate, locating plate and spacing muscle) in the junction of each part, is convenient for realize the relative position between each part spacing, and then the deformation volume among the control welding process. Through stop gear's setting, can reduce the load that the welding seam bore, improve overall structure's intensity, and then guarantee joint strength and connection stability between each part.
And the connecting structure of each component of the right longitudinal beam, the front cross beam 1 and the rear cross beam 2 is the same as the left longitudinal beam. Therefore, detailed description is not given. The right rear longitudinal beam and the left rear longitudinal beam are also provided with a positioning plate. The positioning hole on the positioning plate is a through hole. The outline of the positioning hole can also be formed by connecting an arc with radian larger than 270 degrees and two line segments arranged in parallel. The two line segments are respectively connected with the two ends of the circular arc.
The left front longitudinal beam 5 and the right front longitudinal beam 10 are hollow tubes in which vertically arranged reinforcing ribs are arranged. The corners of the left and right front side members 5 and 10 are provided with concave portions. The crushing strength is convenient to increase. The outer surfaces of the left front longitudinal beam and the right front longitudinal beam are covered with Kevlar layers. The outer surfaces of the front cross beam and the rear cross beam are covered with Kevlar layers. So as to ensure the strength. The breaking resistance is increased.
The left rear longitudinal beam 8 and the right rear longitudinal beam 15 are hollow pipes provided with criss-cross reinforcing ribs. The strength is convenient to guarantee.
The lower swing arm left front mounting bracket 6 comprises a frame with openings on the left and the right, and reinforcing ribs for two cavities which are respectively arranged in the front and the back of an inner cavity of the frame are fixed in the frame; the wall thickness of the front end of the frame is 6mm, and the front end of the frame and the reinforcing ribs are both provided with through holes for the bolts for locking the front mounting bush of the lower swing arm to pass through; a nut box 14 for fixing the square nut 13 is welded and fixed on the periphery of the rear side of the reinforcing rib provided with the through hole, the nut box 14 and the reinforcing rib form an accommodating cavity for accommodating and fixing the square nut, and the square nut is in threaded connection with the bolt; the nut box comprises a front side plate, a rear side plate, a left side plate and a right side plate which are respectively arranged around the periphery of the front side, the rear side, the left side and the right side of the nut; gaps exist among adjacent side plates in the four front side plates, the four rear side plates, the four left side plates and the four right side plates; the front side plate and the right side plate are welded with the reinforcing ribs. This patent is convenient for to have seted up the through-hole through the wall thickness of optimizing the frame front end, directly realizes passing of bolt, has avoided the pressure to rivet this process of steel sleeve pipe, reduces the part, and when reducing the pressure and rivet, to the structural deformation that the part caused and to the destruction of material and near welding seam, reduce the fracture risk of vehicle driving in-process. On the other hand, square nut passes through the nut box to be fixed in the strengthening rib outside, compares heavy desk-top square nut, reduces the appearance of the condition of swing arm abnormal sound.
A reinforcing plate is welded and fixed on the left front mounting bracket of the lower swing arm and the right front mounting bracket of the lower swing arm; the reinforcing plate is welded and fixed at an opening of the front side cavity close to the rear cross beam in the frame. The fixing of the left front mounting bracket of the lower swing arm is convenient to realize. The reinforcing plate has an inner recess.
Still include a strengthening beam 3, strengthening beam 3 sets up the rear at rear beam 2, and strengthening beam 3 controls both ends and weld with left back longeron 8 and right back longeron 15 respectively and link to each other. The whole bearing strength of the auxiliary frame is convenient to guarantee.
The left front vehicle body bracket 4 and the right front vehicle body bracket 9 are arranged on the left side and the right side of the front cross beam 1 in a mirror symmetry manner; the right end part of the left front body bracket 4 is provided with a U-shaped socket with openings at the front end, the rear end and the right end; the U-shaped socket is used for being inserted into the left end part of the front cross beam 1; the left front vehicle body bracket 4 is spliced with the left front vehicle body bracket 4 and connected with the MIG in a welding way. The connection strength of the two is convenient to realize.
A first welding part A is a welding part for MIG between a left front vehicle body support and a front cross beam, a second welding part B is a welding part for MIG between a right front vehicle body support 9 and the front cross beam, a third welding part C is a welding part for the front cross beam and the left front longitudinal beam, a fourth welding part D is a welding part for the front cross beam and the right front longitudinal beam 10, a fifth welding part E is a welding part for the left front longitudinal beam and a left front lower swing arm mounting bracket, a sixth welding part F is a welding part for the right front longitudinal beam 10 and a right front lower swing arm mounting bracket, a seventh welding part G is a welding part for the left front lower swing arm mounting bracket and a left middle vehicle body support, an eighth welding part H is a welding part for the right front lower swing arm mounting bracket and a right middle vehicle body support, a ninth welding part I is a welding part for the left front lower swing arm mounting bracket and the left rear longitudinal beam 8, a tenth welding part J is a welding part for the right front lower swing arm mounting bracket and the right rear longitudinal beam 15, an eleventh welding part K is a welding part for a rear swing arm sleeve and a left rear longitudinal beam, a seventeenth welding part C is a welding part for a right rear swing arm sleeve, a right rear longitudinal beam, a fourteenth rear longitudinal beam, a right rear longitudinal beam is a welding part B welding part C welding part B welding part C welding part B welding part C welding part.
The mounting hole that is used for steering engine installation sleeve to pass is seted up at the both ends about rear frame member 2, is equipped with the external screw thread that is used for threaded connection nut on steering engine installation sleeve's the outer wall, and threaded connection has two nuts that set up from top to bottom on the steering engine installation sleeve, and two nuts offset with the inner wall of rear frame member respectively. The strength of the mounting hole on the rear cross beam is convenient to ensure. The steering engine mounting sleeve partially penetrates through the rear cross beam at first, then the penetrating part is screwed into the two nuts, and then the lower end of the mounting sleeve extends out of the bottom plate of the rear cross beam. Two nuts are supported against the inner walls of the upper part and the lower part of the rear cross beam through two nut screws.
The left front longitudinal beam and the right front longitudinal beam are made of aluminum alloy 6063-T6. The front longitudinal beam is guaranteed to have certain strength, and meanwhile certain energy can be absorbed when the automobile collides, so that the safety of a driver and passengers is guaranteed. Stress release holes are formed in the corner portions of the left front longitudinal beam and the right front longitudinal beam. The front longitudinal beam can collapse and absorb energy when collision happens, the energy transfer ratio is eliminated, and the safety factor of passengers is improved. For the reinforcing plate and nut box to be stamped parts, the material is aluminum alloy 5052. Guarantee that stamping workpiece structure is good, intensity satisfies the requirement. The square nut is made of steel. The torque requirement when the swing arm is installed in a host factory is met. The reinforcing cross beam, the left front vehicle body bracket, the lower swing arm left front mounting bracket, the left middle vehicle body bracket, the left rear longitudinal beam, the right front vehicle body bracket, the lower swing arm right front mounting bracket, the right middle vehicle body bracket and the right rear longitudinal beam are all made of aluminum alloy 6082-T6, the structural members are main bearing and stress bearing members, the requirements on rigidity and strength are high, and 6082-T6 state aluminum alloy with higher performance is required to meet the requirements.
And an inner concave part is arranged on the left side of the left rear longitudinal beam, and a radio frequency card is adhered in the inner concave part. The radio frequency card stores parameter information of the auxiliary frame. The method is convenient for automobile assembly manufacturers to scan the radio frequency card according to the radio frequency identification device to obtain the parameter information of the auxiliary frame. Is convenient to correspond to the automobile body of the automobile, and avoids misassembly.
A left middle vehicle body bracket 7 and a right middle vehicle body bracket 12 are welded and fixed on the lower swing arm left front mounting bracket and the lower swing arm right front mounting bracket; mounting holes for mounting to a vehicle body are formed in the left middle vehicle body bracket 7 and the right middle vehicle body bracket 12, and the center distance between the mounting holes of the left middle vehicle body bracket and the right middle vehicle body bracket is 937mm-957 mm; mounting holes for mounting the rear cross beam to a vehicle body are formed in the left end and the right end of the rear cross beam, and the center distance between the mounting holes in the left end and the right end of the rear cross beam is 602-622 mm; the center distance between the left middle vehicle body bracket and the mounting hole at the left end of the rear cross beam is 361 and 381 mm; the left front vehicle body bracket and the right front vehicle body bracket 9 are provided with mounting holes for mounting to a vehicle body, and the center distance of the mounting holes of the left front vehicle body bracket and the right front vehicle body bracket 9 is 980-1000 mm; the center distance between the left front body support and the mounting hole at the left end of the rear cross beam is 795-815 mm. This patent is through the mutual position relation between six mounting holes of injecing and automobile body, is convenient for guarantee installation intensity. All the mounting holes to be mounted to the vehicle body are mounting holes provided on the mounting sleeve. Vehicle body mounting sleeves are welded and fixed on the left middle vehicle body bracket 7 and the right middle vehicle body bracket 12. And the left end and the right end of the rear cross beam are fixedly welded with vehicle body installation sleeves. And vehicle body mounting sleeves are welded and fixed on the left front vehicle body bracket and the right front vehicle body bracket. When the size is smaller than the control range by 10mm, the overall mode, rigidity and strength of the auxiliary frame are not changed greatly, but the maximum stress at the rear support of the swing arm of the hand piece is changed from 178.85MPa to 215.2MPa, the stress is improved by 20 percent, and the potential cracking risk exists in the process of integrating the durability of a road test and the real driving process; when the size is larger than the control range by 10mm, the first-order torsional mode of the auxiliary frame is reduced from 97.9Hz to 95.3Hz by 2%; the NVH performance of the whole vehicle is not improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
- The aluminum alloy frame type auxiliary frame for MIG welding comprises an aluminum alloy auxiliary frame main body, wherein the aluminum alloy auxiliary frame main body comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam which are arranged on the left side and the right side of the front cross beam and the longitudinal cross beam, the left longitudinal beam comprises a left front longitudinal beam, a lower swing arm left front mounting bracket and a left rear longitudinal beam which are sequentially connected from front to back, the right longitudinal beam comprises a right front longitudinal beam, a lower swing arm right front mounting bracket and a right rear longitudinal beam which are sequentially connected from front to back, and the aluminum alloy frame type auxiliary frame is characterized in that a notch used for embedding the corner part of the front cross beam is formed in the front end of the left front cross beam, a supporting strip used for supporting the front cross beam is arranged in the notch, and the left;the front end of the left front mounting bracket of the lower swing arm is provided with two limiting plates which are arranged up and down, a gap between the two limiting plates is an insertion part for inserting the rear end part of the left front longitudinal beam, and the insertion part is inserted with the rear end part of the left front longitudinal beam and is connected with the rear end part of the left front longitudinal beam in an MIG welding way;the left rear longitudinal beam comprises a square pipe part with a front opening and a rear opening and a positioning plate extending rightwards, and the positioning plate is arranged on the right side of the bottom of the square pipe part;the right side wall of the square tube part and the positioning plate are enclosed to form a positioning groove for being embedded into the rear cross beam;the top of the left end of the rear cross beam is provided with an extension strip extending leftwards, the extension strip and the left side wall of the rear cross beam are respectively abutted against the top surface and the right side wall of the left rear longitudinal beam, and the rear cross beam and the positioning plate are respectively provided with a positioning hole for positioning when the left rear longitudinal beam is connected with the rear cross beam;the left rear longitudinal beam is connected with the rear cross beam through MIG welding;the rear end of the left front mounting bracket of the lower swing arm is provided with two limiting ribs which are arranged up and down, and a gap between the two limiting ribs is a positioning groove body used for inserting the joint of the left rear longitudinal beam and the rear cross beam;the distance between the left end parts of the two limiting ribs is smaller than the distance between the right end parts of the two limiting ribs;and the left rear longitudinal beam and the rear cross beam are connected with the rear end MIG of the lower swing arm left front mounting bracket in a welding mode.
- 2. The MIG welded aluminum alloy frame subframe of claim 1, wherein: the lower swing arm left front mounting bracket comprises a frame with both left and right openings, and reinforcing ribs for two cavities which are respectively arranged in the front and back of an inner cavity of the frame are fixed in the frame;the wall thickness of the front end of the frame is 6mm, and the front end of the frame and the reinforcing ribs are respectively provided with a through hole for a bolt for locking the front mounting bush of the lower swing arm to pass through;a nut box for fixing a square nut is welded and fixed on the periphery of the rear side of the reinforcing rib, which is provided with the through hole, the nut box and the reinforcing rib form an accommodating cavity for accommodating and fixing the square nut, and the square nut is in threaded connection with the bolt;the nut box comprises a front side plate, a rear side plate, a left side plate and a right side plate which are respectively arranged around the periphery of the front side, the rear side, the left side and the right side of the nut;gaps exist among adjacent side plates in the front side plate, the rear side plate, the left side plate and the right side plate;the front side plate and the right side plate are connected with the reinforcing ribs in a welding mode.
- 3. The MIG welded aluminum alloy frame subframe of claim 1, wherein: the left front vehicle body bracket and the right front vehicle body bracket are arranged on the left side and the right side of the front cross beam in a mirror symmetry manner;the right end part of the left front vehicle body bracket is provided with a U-shaped socket with an opening at the front end, the rear end and the right end;the U-shaped socket is a socket used for being inserted into the left end part of the front cross beam;the left front vehicle body support is spliced with the left front vehicle body support and connected with the left front vehicle body support in an MIG welding mode.
- 4. The MIG welded aluminum alloy frame subframe of claim 2, wherein: a reinforcing plate is welded and fixed on the lower swing arm left front mounting bracket and the lower swing arm right front mounting bracket;the reinforcing plate is welded and fixed at an opening of the front side cavity close to the rear cross beam in the frame.
- 5. The MIG welded aluminum alloy frame subframe of claim 1, wherein: the rear cross beam is arranged behind the rear cross beam, and the left end and the right end of the reinforcing cross beam are respectively connected with the left rear longitudinal beam and the right rear longitudinal beam in a welding mode.
- 6. The MIG-welded aluminum alloy frame subframe of claim 3, wherein: a left middle vehicle body bracket and a right middle vehicle body bracket are welded and fixed on the lower swing arm left front mounting bracket and the lower swing arm right front mounting bracket;mounting holes for mounting the left middle vehicle body support and the right middle vehicle body support to a vehicle body are formed in the left middle vehicle body support and the right middle vehicle body support, and the center distance between the mounting holes of the left middle vehicle body support and the right middle vehicle body support is 937mm-957 mm;mounting holes for mounting the rear cross beam to a vehicle body are formed in the left end and the right end of the rear cross beam, and the center distance between the mounting holes in the left end and the right end of the rear cross beam is 602-622 mm;the center distance between the left middle vehicle body bracket and the mounting hole at the left end of the rear cross beam is 361-381 mm;the left front vehicle body support and the right front vehicle body support are provided with mounting holes for mounting to a vehicle body, and the center distance of the mounting holes of the left front vehicle body support and the right front vehicle body support is 980-1000 mm;the center distance between the left front body support and the mounting hole at the left end of the rear cross beam is 795-815 mm.
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| CN201921591964.2U CN210971273U (en) | 2019-09-24 | 2019-09-24 | MIG welded aluminum alloy frame sub vehicle frame |
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| CN201921591964.2U CN210971273U (en) | 2019-09-24 | 2019-09-24 | MIG welded aluminum alloy frame sub vehicle frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147914A (en) * | 2021-05-25 | 2021-07-23 | 东风汽车集团股份有限公司 | Auxiliary frame structure before steel aluminium mixed type |
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2019
- 2019-09-24 CN CN201921591964.2U patent/CN210971273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147914A (en) * | 2021-05-25 | 2021-07-23 | 东风汽车集团股份有限公司 | Auxiliary frame structure before steel aluminium mixed type |
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Address after: 201702, Shanghai Qingpu District, Shanghai Qing Ping highway 2058 Patentee after: Shanghai Yousheng Aluminum Co., Ltd Address before: 201702, Shanghai Qingpu District, Shanghai Qing Ping highway 2058 Patentee before: SHANGHAI UNISON ALUMINUM PRODUCTS Co.,Ltd. |
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