Forged aluminum alloy rear suspension arm assembly for lightweight new energy automobile

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a light-weight forged aluminum alloy rear suspension arm assembly for a new energy automobile, which comprises a mounting block, swing arms are symmetrically arranged on two sides of the mounting block, first waist grooves are formed in the tops of the swing arms in a penetrating manner and are used for reducing the mass of the swing arms, and a plurality of reinforcing ribs are arranged in the first waist grooves and are used for reinforcing the swing arms. Every two adjacent reinforcing ribs are arranged in the corresponding first waist groove in a triangular mode and used for improving the strength of the swing arm. A supporting rod is fixed to the position, close to the end, between the outer walls of the two swing arms, two second waist grooves are formed in the top of the supporting rod in a penetrating mode, and a connecting rod fixed to the supporting rod is fixed to one sides of the two swing arms. The manufacturing process and the manufacturing cost can be effectively reduced, stress points can be more uniformly distributed through the symmetrical structure, so that the risk that the swing arm is damaged due to uneven stress is reduced, the longitudinal and transverse tensile strength of the rocker arm body is also improved, the mechanical strength of the device is integrally enhanced, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the field of automobile technology, and specifically relates to a forged aluminum alloy rear suspension arm assembly for a lightweight new energy vehicle. Background Art

[0002] New energy vehicles refer to those vehicles that do not rely on traditional gasoline or diesel engines, but use non-traditional fuels or new on-board power devices. These vehicles integrate advanced power control and drive technologies and have advanced technical principles, innovative technical features and novel structural designs; The rear suspension arm assembly of new energy vehicles is a key component of the rear suspension system of the vehicle. It connects the frame (or load-bearing body) and the rear wheels, and plays a vital role in the driving stability, comfort and safety of the vehicle.

[0003] Problems with existing technologies: After long-term use, the existing automobile swing arm is often prone to bending in the middle area during use due to its insufficient overall strength, which can easily lead to cracks or even breakage, significantly shortening the service life of the swing arm. In addition, when the ball head is severely worn, it will cause many problems such as inflexible steering, shaking and abnormal noise during driving, and the replacement operation is also quite cumbersome. Summary of the invention

[0004] The purpose of the present invention is to provide a lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles, which can effectively reduce the manufacturing process and manufacturing cost. The symmetrical structure can distribute the stress points more evenly, thereby reducing the risk of damage to the swing arm due to uneven force, and also increasing the longitudinal and lateral tensile strength of the rocker arm body, thereby enhancing the mechanical strength of the device as a whole and increasing its service life.

[0005] The technical solution adopted by the present invention is as follows: A forged aluminum alloy rear suspension arm assembly for a lightweight new energy vehicle comprises a mounting block, swing arms are symmetrically arranged on both sides of the mounting block, a first waist groove is provided through the top of the swing arm to reduce the mass of the swing arm, a plurality of reinforcing ribs are arranged inside the first waist groove, and two adjacent reinforcing ribs are arranged in a triangular shape in the first waist groove to increase the strength of the swing arm; A support rod is fixed between the outer walls of the two swing arms and near the end positions, and two second waist grooves are provided through the top of the support rod. A connecting rod fixed to the support rod is fixed on one side of the two swing arms, and fixing ears connected to the shock absorber are symmetrically arranged on the top of the two connecting rods; A first mounting tube is fixed to the other end of the swing arm, and a bushing is arranged inside the first mounting tube; A first ball groove is formed through the bottom of the mounting block, a ball head assembly is arranged inside the first ball groove, a ball seat is screwed inside the first ball groove and below the ball head assembly, a buckle assembly for limiting and fixing the ball seat is arranged at the bottom of the ball seat, and the buckle assembly is inserted into the groove through one end of a limiting rod to limit and fix the ball seat; A lubrication component for reducing the friction of the ball head assembly is provided on the top of the ball seat; the lubrication component absorbs the lubricating oil in the first oil groove into the first oil-absorbing cotton through the second oil-absorbing cotton, and then distributes the lubricating oil evenly to each oil-brushing cotton through the first oil-absorbing cotton, and the oil-brushing cotton brushes the oil on the surface of the ball, and then the ball and the ball head assembly roll into contact and brush the lubricating oil onto the surface of the ball head assembly; A dust cover is arranged on the top of the mounting block to prevent dust from entering the first ball groove.

[0006] The distance between the two fixing ears is 80mm-110mm.

[0007] A reinforcing plate is arranged on the top of the swing arm and on both sides of the first waist groove, and a plurality of circular holes are formed through the outer wall of the reinforcing plate.

[0008] The buckle assembly includes a fixed block fixed at the bottom of the ball seat, a mounting groove is provided at the bottom of the fixed block, a rotating shaft is rotatably installed through the inner side of the mounting groove, a rotating wheel is fixed to one end of the rotating shaft, a first groove is provided on one side of the rotating wheel, a fixing rod is fixed to one side edge of the rotating wheel, a second spring rotatably connected to the top wall in the mounting groove is rotatably installed at one end of the fixing rod, and a handle is fixed to the other end of the rotating shaft and extends to the outside of the fixed block.

[0009] The inner top wall of the mounting slot is provided with a first plugging slot, a top rod that is in sliding contact with the rotating wheel is plugged into the inside of the first plugging slot, first inclined sliding surfaces are provided on both sides of the top of the first plugging slot, second plugging slots are provided on both sides of the inside of the first plugging slot, a limit rod is plugged into the inside of the second plugging slot, a second inclined sliding surface that cooperates with the first inclined sliding surface is provided on one side of the bottom of the limit rod, a clamping slot that cooperates with the limit rod is provided on the inner side of the first ball slot, a sliding block is fixed on the outer wall of the limit rod and the top rod, a sliding groove that is slidably connected to the sliding block is provided on the inner sides of the second plugging slot and the first plugging slot, and a first spring fixed to the sliding block is fixed on the inner side of the sliding groove.

[0010] The lubrication assembly includes an arc-shaped groove arranged on the top of the ball seat, a plurality of second ball grooves are provided on the inner side of the arc-shaped groove, a ball rolling in contact with the ball head assembly is provided inside the second ball groove, a second oil groove is provided inside the ball seat and below the second ball groove, a first oil-absorbing cotton is provided inside the second oil groove, a connecting groove connected to the second oil groove is provided inside the second ball groove, an oil-brushing cotton connected to the first oil-absorbing cotton is provided inside the connecting groove, the top contact of the oil-brushing cotton is circular and extends in all directions and contacts with the ball, a first oil groove connected to the second oil groove is provided inside the ball seat, a plurality of second oil-absorbing cotton connected to the first oil-absorbing cotton are provided inside the first oil groove.

[0011] The bottom of the ball seat is provided with a refueling nozzle which is communicated with the first oil groove, and a valve is provided inside the refueling nozzle.

[0012] A first connecting ring sealingly connected to the ball head assembly is arranged on the top of the dust cover, a rotating ring is arranged on the bottom of the dust cover, a ring plate is fixedly installed by bolts on the top of the mounting block, and a sealing ring groove sealingly and rotatably connected to the rotating ring is arranged on the top of the ring plate.

[0013] The outer wall of the first mounting tube is provided with reinforcing ribs intersecting with each other.

[0014] The swing arm is provided with a wear-resistant layer, a tensile layer, an anti-corrosion layer and a base layer in sequence from the outside to the inside. The wear-resistant layer is made of tungsten carbide material, the anti-corrosion layer is made of zinc-nickel alloy material, and the tensile layer is made of alloy steel material.

[0015] The technical effects achieved by the present invention are: The two swing arms provided in the present invention are symmetrically arranged on the mounting block, which can effectively reduce the manufacturing process and manufacturing cost. The symmetrical structure can distribute the stress points more evenly, thereby reducing the risk of damage to the swing arm due to uneven stress. The cooperation of the first waist groove and the reinforcing ribs can effectively reduce the weight of the swing arm, because the first waist groove can remove part of the material without affecting the overall strength and rigidity of the swing arm, and can also reduce the amount of material used, thereby reducing material costs. The support rods and reinforcing plates provided increase the longitudinal and lateral tensile strength of the rocker arm body, thereby enhancing the mechanical strength of the device as a whole and increasing its service life.

[0016] The fixing ears on the two connecting rods of the device of the present invention can be used to install two shock absorbers, and are symmetrically arranged on the front and rear sides of the wheel axis. Therefore, not only the swing arm is prevented from bearing additional bending moment from the shock absorber, but also the installation position of the drive shaft is avoided. In addition, the two shock absorbers form a certain span in the longitudinal direction of the vehicle body, which can effectively improve comfort.

[0017] The buckle assembly provided in the present invention drives the rotating wheel to rotate by cooperating with the rotating shaft through the handle, so that the first groove on the rotating wheel is disengaged from the push rod, and the push rod is squeezed by the rotating wheel. The first inclined sliding surface on the push rod cooperates with the second inclined sliding surface on the limiting rod to drive the limiting rod to move to one side, so that one end of the limiting rod is inserted into the clamping groove, and the ball seat is limited and fixed, which increases the stability of the connection of the ball seat and avoids the loosening of the connection between the ball seat and the first ball groove after long-term use. It is also convenient to disassemble the ball seat and facilitate the replacement and maintenance of the ball head assembly. In combination with the second spring, the rotation of the rotating wheel can be effectively avoided, and the stability of the ball seat fixation is further improved, making the equipment safer when used.

[0018] The lubrication component provided in the present invention can effectively reduce the wear of the ball head assembly through the cooperation of the first oil groove, the second oil groove, the second ball groove, the ball, the connecting groove, the first oil-absorbing cotton, the oil-brushing cotton, the second oil-absorbing cotton and the oiling nozzle, facilitates the lubrication of the ball and the ball head assembly, makes the ball head assembly rotate more smoothly, and improves the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when viewed from above; Figure 3 It is a schematic diagram of the partial cutaway structure of the present invention; Figure 4 It is a schematic diagram of the front cutaway structure of the mounting block and the ball head assembly of the present invention; Figure 5 It is a side view cross-sectional structural schematic diagram of the mounting block and ball head assembly of the present invention; Figure 6 The present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area; Figure 7 The present invention Figure 5 Schematic diagram of the enlarged structure of area B in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Mounting block; 2. Swing arm; 3. First waist groove; 4. Reinforcement rib; 5. First mounting tube; 6. Bushing; 7. Reinforcement rib; 8. Reinforcement plate; 9. Support rod; 10. Connecting rod; 11. Fixing ear; 12. First ball groove; 13. Ball head assembly; 14. Ball seat; 15. First plug-in groove; 16. Push rod; 17. Second plug-in groove; 18. Limit rod; 19. Slide groove; 20. Slider; 21. First spring; 22. Fixing block; 23. Mounting groove; 24, rotating shaft; 25, rotating wheel; 26, first groove; 27, fixing rod; 28, second spring; 29, handle; 30, dust cover; 31, first oil groove; 32, second oil groove; 33, second ball groove; 34, ball; 35, connecting groove; 36, first oil-absorbing cotton; 37, oil-brushing cotton; 38, second oil-absorbing cotton; 39, oiling nozzle; 201, wear-resistant layer; 202, tensile layer; 203, anti-corrosion layer; 204, base layer. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0022] like Figure 1-Figure 3 As shown, a lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles includes a mounting block 1, and swing arms 2 are symmetrically arranged on both sides of the mounting block 1, which can effectively reduce the manufacturing process and manufacturing cost. The symmetrical structure can distribute the force points more evenly, thereby reducing the risk of damage to the swing arm 2 due to uneven force. A first waist groove 3 is opened through the top of the swing arm 2 to reduce the weight of the swing arm 2. A plurality of reinforcing ribs 4 are arranged inside the first waist groove 3. Two adjacent reinforcing ribs 4 are arranged in a triangular shape in the first waist groove 3, which can effectively reduce the weight of the swing arm 2 without affecting the overall strength and rigidity of the swing arm 2 and reducing the occurrence of stress concentration. A reinforcing plate 8 is provided at the top of the swing arm 2 and on both sides of the first waist groove 3. A plurality of circular holes are provided through the outer wall of the reinforcing plate 8, which further increases the longitudinal bending strength of the swing arm 2. A support rod 9 is fixed between the outer walls of the two swing arms 2 and near the end position. Two second waist grooves are formed on the top of the support rod 9. A connecting rod 10 fixed to the support rod 9 is fixed on one side of the two swing arms 2, which increases the lateral tensile strength of the swing arms 2. Compared with the swing arms 2, which break during use, the use strength and practical life of the equipment are improved. The tops of the two connecting rods 10 are symmetrically provided with fixing ears 11 connected to the shock absorber; the distance between the two fixing ears 11 is 80mm-110mm, which avoids affecting the installation of the automobile transmission shaft, increases the perfection of the equipment, and facilitates the installation of the shock absorber; The swing arm 2 is provided with a wear-resistant layer 201, a tensile layer 202, an anti-corrosion layer 203 and a base layer 204 in sequence from the outside to the inside. The wear-resistant layer 201 is made of tungsten carbide material, the anti-corrosion layer 203 is made of zinc-nickel alloy material, and the tensile layer 202 is made of alloy steel material, which improves the anti-corrosion performance, wear resistance and tensile performance of the swing arm 2, and also improves the use strength and service life of the equipment; A first mounting tube 5 is fixed to the other end of the swing arm 2, and a bushing 6 is arranged inside the first mounting tube 5; the outer wall of the first mounting tube 5 is provided with mutually intersecting reinforcing ribs 7, which increases the use strength of the first mounting tube 5 and prevents the first mounting tube 5 from breaking during use; A first ball groove 12 is formed through the bottom of the mounting block 1, a ball head assembly 13 is provided inside the first ball groove 12, a ball seat 14 is screwed inside the first ball groove 12 and below the ball head assembly 13, a buckle assembly for limiting and fixing the ball seat 14 is provided at the bottom of the ball seat 14, and the buckle assembly is inserted into the groove through one end of a limiting rod 18 to limit and fix the ball seat 14; A lubrication assembly for reducing the friction of the ball head assembly 13 is provided on the top of the ball seat 14; the lubrication assembly absorbs the lubricating oil in the first oil groove 31 into the first oil-absorbing cotton 36 through the second oil-absorbing cotton 38, and then distributes the lubricating oil evenly to each oil-brushing cotton 37 through the first oil-absorbing cotton 36, and the oil-brushing cotton 37 brushes the surface of the ball 34 with oil, and then the ball 34 rolls into contact with the ball head assembly 13 and brushes the lubricating oil onto the surface of the ball head assembly 13; A dust cover 30 is disposed on the top of the mounting block 1 to prevent dust from entering the first ball groove 12 .

[0023] According to the above structure, the two swing arms 2 are symmetrically arranged on the mounting block 1, which can effectively reduce the manufacturing process and manufacturing cost. The symmetrical structure can distribute the stress points more evenly, thereby reducing the risk of the swing arm 2 being damaged due to uneven stress. The support rod 9 arranged between the two swing arms 2 can further increase the strength of the swing arm 2. The arrangement of the first waist groove 3 and the reinforcing ribs 4 can effectively reduce the weight of the swing arm 2, because the first waist groove 3 can remove part of the material without affecting the overall strength and rigidity of the swing arm 2, and can also reduce the amount of material used, thereby reducing material costs.

[0024] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the buckle assembly includes a fixed block 22 fixed to the bottom of the ball seat 14, a mounting groove 23 is provided at the bottom of the fixed block 22, a rotating shaft 24 is rotatably installed on the inner side of the mounting groove 23, a rotating wheel 25 is fixed at one end of the rotating shaft 24, a first groove 26 is provided on one side of the rotating wheel 25, a fixing rod 27 is fixed at one side edge of the rotating wheel 25, a second spring 28 rotatably connected to the inner top wall of the mounting groove 23 is rotatably installed on one end of the fixing rod 27, a handle 29 is fixed on the other end of the rotating shaft 24 and extends to the outside of the fixed block 22; a first plug-in groove 15 is provided on the inner top wall of the mounting groove 23, a top rod 16 that is in sliding contact with the rotating wheel 25 is plugged into the inside of the first plug-in groove 15, first inclined sliding surfaces are provided on both sides of the top of the first plug-in groove 15, and a second spring 28 rotatably connected to the inner top wall of the mounting groove 23 is rotatably installed on one end of the fixing rod 27, and a handle 29 is fixed on the other end of the rotating shaft 24 and extends to the outside of the fixed block 22; a first plug-in groove 15 is provided on the inner top wall of the mounting groove 23, a top rod 16 that is in sliding contact with the rotating wheel 25 is inserted into the inside of the first plug-in groove 15, a first inclined sliding surface is provided on both sides of the top of the first plug-in groove 15, and a second spring 28 that is rotatably connected to the inner top wall of the mounting groove 23 is rotatably installed on the other end of the rotating shaft 24 and extends to the outside of the fixed block 22; a first plug-in groove 15 is provided on the inner top wall of the mounting groove A second plugging slot 17 is provided on both sides of the interior of a plug-in slot 15, and a limit rod 18 is inserted into the interior of the second plug-in slot 17. A second inclined sliding surface cooperating with the first inclined sliding surface is provided on one side of the bottom of the limit rod 18. A slot cooperating with the limit rod 18 is provided on the inner side of the first ball slot 12. A slider 20 is fixed to the outer walls of the limit rod 18 and the top rod 16. A slide groove 19 slidably connected to the slider 20 is provided on the inner sides of the second plugging slot 17 and the first plugging slot 15. The provided slide groove 19 and slider 20 make the movement of the limit rod 18 and the top rod 16 more stable. A first spring 21 fixed to the slider 20 is fixed on the inner side of the slide groove 19. The provided first spring 21 facilitates the resetting of the limit rod 18 and the top rod 16, thereby increasing the practicability of the equipment.

[0025] According to the above structure, when installing the ball seat 14, the ball seat 14 is first screwed into the first ball groove 12, and then the handle 29 is turned. The handle 29 drives the rotating wheel 25 to rotate through the rotating shaft 24, so that the first groove 26 on the rotating wheel 25 is disengaged from the push rod 16, and the push rod 16 is squeezed by the rotating wheel 25, and the push rod 16 is pushed upward. The first inclined sliding surface on the push rod 16 cooperates with the second inclined sliding surface on the limiting rod 18 to drive the limiting rod 18 to move to one side, so that one end of the limiting rod 18 is inserted into the slot, and the ball seat 14 is limited and fixed, which increases the stability of the connection of the ball seat 14, avoids the loosening of the connection between the ball seat 14 and the first ball groove 12 after long-term use, and also improves the safety of the equipment. The second spring 28 is provided in conjunction with the rotating wheel 25 and the handle 29, which can effectively avoid the rotation of the rotating wheel 25 and improve the stability of the equipment.

[0026] like Figure 5-Figure 7As shown, the lubrication assembly includes an arc-shaped groove arranged on the top of the ball seat 14, a plurality of second ball grooves 33 are arranged on the inner side of the arc-shaped groove, and a ball 34 is arranged inside the second ball groove 33 for rolling contact with the ball head assembly 13, which can effectively reduce the friction of the ball head assembly 13, thereby reducing wear and making the rotation of the ball head assembly 13 smoother, and a second oil groove 32 is arranged inside the ball seat 14 and below the second ball groove 33, and a first oil-absorbing cotton 36 is arranged inside the second oil groove 32, and a connecting groove 35 connected to the second oil groove 32 is arranged inside the second ball groove 33, and a connecting groove 35 connected to the first oil-absorbing cotton 36 is arranged inside the connecting groove 35. 6 is connected to the oil brush cotton 37, the top contact of the oil brush cotton 37 is circular and extends in all directions, and contacts with the ball 34, so that the top of the oil brush cotton 37 can better contact with the ball 34, which is convenient for adding lubricating oil to the ball 34, and the interior of the ball seat 14 is provided with a first oil groove 31 connected to the second oil groove 32, and the interior of the first oil groove 31 is provided with a plurality of second oil absorbent cottons 38 connected to the first oil absorbent cotton 36; the bottom of the ball seat 14 is provided with a refueling nozzle 39 connected to the first oil groove 31, and the interior of the refueling nozzle 39 is provided with a valve, which increases the perfection of the equipment and facilitates the addition of lubricating oil to the first oil groove 31 through the refueling nozzle 39.

[0027] According to the above structure, the first oil-absorbing cotton 36, the oil-brushing cotton 37 and the second oil-absorbing cotton 38 are all made of ultra-fine fiber non-woven fabric, and the lubricating oil in the first oil groove 31 can be transferred to the oil-brushing cotton 37 through the second oil-absorbing cotton 38 and the first oil-absorbing cotton 36, and then brushed on the ball 34. After the ball 34 is stained with the lubricating oil, the ball head assembly 13 is lubricated by the ball 34, which reduces the wear on the ball head assembly 13, increases the service life of the ball head assembly 13, and also increases the service life of the equipment.

[0028] like Figure 1 , Figure 5 and Figure 6 As shown, the top of the dust cover 30 is provided with a first connecting ring which is sealed and connected to the ball head assembly 13, the bottom of the dust cover 30 is provided with a rotating ring, the top bolt of the mounting block 1 is fixed with an annular plate, and the top of the annular plate is provided with a sealing annular groove which is sealed and rotatably connected to the rotating ring, thereby avoiding the fixed connection of the dust cover 30 and allowing the dust cover 30 to rotate with the rotation of the ball head assembly 13, thereby avoiding damage to the dust cover 30, increasing the service life of the dust cover 30, and increasing the use effect of the equipment.

[0029] The working principle of the present invention is as follows: when installing the ball seat 14, first screw the ball seat 14 into the first ball groove 12, then turn the handle 29, the handle 29 drives the rotating wheel 25 to rotate through the rotating shaft 24, so that the first groove 26 on the rotating wheel 25 is disengaged from the push rod 16, the push rod 16 is squeezed by the rotating wheel 25, and the push rod 16 is pushed upward, the first inclined sliding surface on the push rod 16 cooperates with the second inclined sliding surface on the limiting rod 18 to drive the limiting rod 18 to move to one side, so that one end of the limiting rod 18 is inserted into the card groove, the ball seat 14 is limited and fixed, the stability of the connection of the ball seat 14 is increased, and the loose connection between the ball seat 14 and the first ball groove 12 is avoided after long-term use, and the safety of the equipment is improved; the second oil-absorbing cotton 38 can pass the lubricating oil in the first oil groove 31 through the second oil-absorbing cotton 38. The first oil-absorbing cotton 36 is transferred to the oil-brushing cotton 37 and then brushed on the ball bearing 34. After the ball bearing 34 is stained with lubricating oil, the ball head assembly 13 is lubricated by the ball bearing 34, thereby reducing the wear on the ball head assembly 13; the two swing arms 2 are symmetrically arranged on the mounting block 1, which can effectively reduce the manufacturing process and manufacturing cost. The symmetrical structure can distribute the stress points more evenly, thereby reducing the risk of damage to the swing arm 2 due to uneven force. The support rod 9 arranged between the two swing arms 2 can further increase the strength of the swing arm 2. The arrangement of the first waist groove 3 and the reinforcing rib 4 can effectively reduce the weight of the swing arm 2, because the first waist groove 3 can remove part of the material without affecting the overall strength and rigidity of the swing arm 2, and can also reduce the amount of material used, thereby reducing the material cost.

[0030] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles, comprising a mounting block (1), characterized in that: The mounting block (1) is symmetrically provided with swing arms (2), the top of the swing arm (2) is provided with a first waist groove (3) for reducing the mass of the swing arm (2), a plurality of reinforcing ribs (4) are provided inside the first waist groove (3), two adjacent reinforcing ribs (4) are arranged in a triangular shape in the first waist groove (3) for increasing the strength of the swing arm; A support rod (9) is fixed between the outer walls of the two swing arms (2) and near the end positions, and two second waist grooves are provided through the top of the support rod (9). A connecting rod (10) fixed to the support rod (9) is fixed on one side of the two swing arms (2), and fixing ears (11) connected to the shock absorber are symmetrically arranged on the top of the two connecting rods (10); A first mounting tube (5) is fixed to the other end of the swing arm (2), and a bushing (6) is arranged inside the first mounting tube (5); A first ball groove (12) is formed through the bottom of the mounting block (1), a ball head assembly (13) is arranged inside the first ball groove (12), a ball seat (14) is screwed inside the first ball groove (12) and below the ball head assembly (13), a buckle assembly for limiting and fixing the ball seat (14) is arranged at the bottom of the ball seat (14), and the buckle assembly is inserted into the groove through one end of a limiting rod (18) to limit and fix the ball seat (14); The top of the ball seat (14) is provided with a lubrication component for reducing the friction of the ball head assembly (13); the lubrication component absorbs the lubricating oil in the first oil groove (31) into the first oil absorption cotton (36) through the second oil absorption cotton (38), and then distributes the lubricating oil evenly to each oil brushing cotton (37) through the first oil absorption cotton (36); the oil brushing cotton (37) brushes the oil on the surface of the ball (34), and then the ball (34) rolls into contact with the ball head assembly (13) and brushes the lubricating oil onto the surface of the ball head assembly (13); A dust cover (30) is provided on the top of the mounting block (1) for preventing dust from entering the first ball groove (12).

2. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: The distance between the two fixing ears (11) is 80 mm-110 mm.

3. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: A reinforcing plate (8) is provided at the top of the swing arm (2) and on both sides of the first waist groove (3), and a plurality of circular holes are provided through the outer wall of the reinforcing plate (8).

4. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: The buckle assembly comprises a fixed block (22) fixed to the bottom of the ball seat (14), a mounting groove (23) being provided at the bottom of the fixed block (22), a rotating shaft (24) being rotatably installed through the inner side of the mounting groove (23), a rotating wheel (25) being fixed to one end of the rotating shaft (24), a first groove (26) being provided on one side of the rotating wheel (25), a fixing rod (27) being fixed to one side edge of the rotating wheel (25), a second spring (28) being rotatably installed at one end of the fixing rod (27) being rotatably connected to the inner top wall of the mounting groove (23), and a handle (29) being fixed to the other end of the rotating shaft (24) and extending to the outside of the fixed block (22).

5. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: The inner top wall of the mounting groove (23) is provided with a first plug-in groove (15), a push rod (16) in sliding contact with the rotating wheel (25) is inserted inside the first plug-in groove (15), first inclined sliding surfaces are provided on both sides of the top of the first plug-in groove (15), second plug-in grooves (17) are provided on both sides of the inside of the first plug-in groove (15), a limit rod (18) is inserted inside the second plug-in groove (17), a second inclined sliding surface cooperating with the first inclined sliding surface is provided on one side of the bottom of the limit rod (18), a clamping groove cooperating with the limit rod (18) is provided on the inner side of the first ball groove (12), a slider (20) is fixed to the outer walls of the limit rod (18) and the push rod (16), a slide groove (19) in sliding connection with the slider (20) is provided on the inner sides of the second plug-in groove (17) and the first plug-in groove (15), and a first spring (21) fixed to the slider (20) is fixed on the inner side of the slide groove (19).

6. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: The lubrication assembly comprises an arc-shaped groove arranged at the top of the ball seat (14), a plurality of second ball grooves (33) are provided on the inner side of the arc-shaped groove, a ball (34) rolling in contact with the ball head assembly (13) is provided inside the second ball groove (33), a second oil groove (32) is provided inside the ball seat (14) and below the second ball groove (33), a first oil-absorbing cotton (36) is provided inside the second oil groove (32), a connecting groove (35) connected to the second oil groove (32) is provided inside the second ball groove (33), an oil-brushing cotton (37) connected to the first oil-absorbing cotton (36) is provided inside the connecting groove (35), the top contact of the oil-brushing cotton (37) is circular and extends in all directions and contacts the ball (34), a first oil groove (31) connected to the second oil groove (32) is provided inside the ball seat (14), a plurality of second oil-absorbing cotton (38) connected to the first oil-absorbing cotton (36) are provided inside the first oil groove (31).

7. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: The bottom of the ball seat (14) is provided with a refueling nozzle (39) which is in communication with the first oil groove (31), and a valve is provided inside the refueling nozzle (39).

8. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1 is characterized in that: The top of the dust cover (30) is provided with a first connecting ring which is sealingly connected to the ball head assembly (13); the bottom of the dust cover (30) is provided with a rotating ring; the top bolts of the mounting block (1) are fixedly mounted with an annular plate; the top of the annular plate is provided with a sealing annular groove which is sealingly and rotatably connected to the rotating ring.

9. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1, characterized in that: The outer wall of the first mounting tube (5) is provided with reinforcing ribs (7) that intersect with each other.

10. The lightweight forged aluminum alloy rear suspension arm assembly for new energy vehicles according to claim 1, characterized in that: The swing arm (2) is provided with a wear-resistant layer (201), a tensile layer (202), an anti-corrosion layer (203) and a base layer (204) in sequence from the outside to the inside; the wear-resistant layer (201) is made of tungsten carbide material, the anti-corrosion layer (203) is made of zinc-nickel alloy material, and the tensile layer (202) is made of alloy steel material.

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