CN215360826U - Rear lifting air suspension of high-lift chassis - Google Patents
Rear lifting air suspension of high-lift chassis Download PDFInfo
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- CN215360826U CN215360826U CN202121705145.3U CN202121705145U CN215360826U CN 215360826 U CN215360826 U CN 215360826U CN 202121705145 U CN202121705145 U CN 202121705145U CN 215360826 U CN215360826 U CN 215360826U
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Abstract
The utility model discloses a rear lifting air suspension of a high-lift chassis, which comprises a frame, a shock absorber bracket, a damper, an ECAS valve, a limiting bracket, an upper equalizing beam, a suspender, a stabilizer bar, a straight thrust bar, a large bracket, a large air bag, a small air bag, a lower pushing bracket, a middle axle, a rear axle, an upper pushing bracket, a V-shaped push, a sleeve, a fixed bracket, a lower lifting curved beam, an air bag lifting bracket and a lifting air bag. The utility model can ensure the compactness of the chassis arrangement while ensuring the stability and the transmission performance of the rear suspension, ensures more reasonable space utilization, ensures the transverse stability of the vehicle and the light weight of the suspension system, greatly ensures the vehicle trafficability, can adjust the driving form according to the road condition and the bearing requirement, has better road condition adaptability and higher fuel economy.
Description
Technical Field
The utility model relates to a rear lifting air suspension of a high-lift chassis, belonging to the technical field of automobile chassis.
Background
At present, due to the fact that the working environment of domestic heavy vehicles is severe, especially in areas with poor road conditions such as oil fields, certain requirements are made on the ground clearance of the whole vehicle. Therefore, high trafficability has become a vehicle market demand while ensuring component strength and overall vehicle performance. In addition, the petroleum resources are increasingly tense, the oil price and the natural gas are continuously increased, and the oil saving and the cost reduction become the key points for the automobile industry and the automobile transportation industry. Since the mass of the automobile is one of the important factors affecting fuel consumption, it is more important to optimally arrange each system and design the system in a light weight manner. Along with the stricter of the regulation, the schedule is also increased by charging according to the shaft, the empty and full-load transportation requirements of users are subdivided again according to market positioning for further reducing the oil consumption, the normal output of power is ensured, and when the vehicle is empty, the single-shaft driving is realized, and when the vehicle carries cargo, the double-shaft driving is realized, the fuel economy is exerted, the cost is reduced, and meanwhile, the emission pollution is reduced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a rear-lift air suspension of a high-lift chassis aiming at the defects in the prior art.
In order to solve the technical problem, the utility model provides a rear lifting air suspension of a high-lift chassis, which comprises a frame, a shock absorber support, a damper, an ECAS valve, a limiting support, an upper balance beam, a suspension rod, a stabilizer bar, a straight thrust rod, a large support, a large air bag, a small air bag, a lower pushing support, a middle axle, a rear axle, an upper pushing support, a V pushing support, a sleeve, a fixing support, a lower lifting bent beam, an air bag lifting support and a lifting air bag, wherein the upper balance beam is respectively connected with the upper parts of the middle axle and the rear axle through positioning holes, and the lower pushing support is respectively connected with the lower parts of the middle axle and the rear axle through the positioning holes; the limiting bracket and the shock absorber bracket are respectively connected to the outer side of the frame, the upper part of the damper is connected with the shock absorber bracket, and the lower part of the damper is connected with the upper equalizing beam; the stabilizer bar is provided with a bush and connected with a matched boring hole of the large bracket, and the large bracket and the push-up bracket are provided with shared hole positions and are respectively arranged at the outer side and the inner side of the frame; the suspension rod is connected with the stabilizer bar through a step shaft and is connected with a lifting lug of the overhead equalizing beam; the V-shaped push double-ball head is connected with the push-up support, and the single-ball head is connected with the middle bridge and the rear bridge through the support; the straight thrust rod is connected with a hole position at the lower end of the large support through a ball pin at one end, and the ball pin at the other end is connected with the lower pushing support; the frame air bag bracket is connected to the outer side of the frame, the upper ends of the large air bag and the small air bag are connected with the frame air bag bracket, and the lower ends of the large air bag and the small air bag are connected with the end surfaces of the front cantilever and the rear cantilever of the upper equalizing beam; the air bag lifting support is a connecting piece of an upper pushing support and a rear axle, the fixed support is connected with the frame, and the lower lifting camber beam and the sleeve are connected with the fixed support; the upper part of the lifting air bag is connected with the air bag lifting support, and the lower part of the lifting air bag is connected with the middle part of the lower lifting camber beam.
The cantilever at the front end and the rear end of the upper equalizing beam is provided with a first hole site and a second hole site, the side surface of the upper equalizing beam is provided with a side hole site, and the upper surface of the upper equalizing beam is provided with a lifting lug; the plane of the first hole site and the plane of the second hole site are machined surfaces; a small boss is machined on the upper surface of the second hole site, and lifting lugs are arranged on the surface of the small boss; the upper equalizing beam is fixed with a connecting rod bracket of the ECAS valve through a second hole position by using a bolt, and the upper end of the ECAS valve is connected with the frame through a bolt; the bottom end faces of the large air bag and the small air bag are in contact with the machined surfaces of the first hole site and the second hole site and are connected through bolts; the lower end part of the damper is connected with a side hole of the upper equalizing beam through a stepped shaft bolt, and a large gasket is added in the middle; the end part of the suspender is inserted into the middle of the lifting lug of the upper equalizing beam and is fixed by a step shaft bolt; the three surfaces of the lower part of the upper equalizing beam are machined surfaces, and positioning grooves are arranged on the two side surfaces of the upper equalizing beam and used for pre-positioning and limiting with bosses of the middle axle and the rear axle; the upper balance beam is symmetrical left and right with the center plane of the frame and symmetrical front and back with the center plane of the rear axle.
The sections of the axle housings of the middle axle and the rear axle are rounded rectangles, and in order to ensure that the inclination angle of the transmission shaft is 3 degrees, the processing bosses and the rectangular sections form 3-degree included angles; the lower parts of the middle axle and the rear axle are provided with a first positioning pin hole for press mounting of a positioning pin, the positioning pin is connected with a second positioning pin hole on the lower pushing support, a ball pin hole position of the straight thrust rod is in bolt connection with a lower support leg hole on the lower pushing support, the four-bar mechanism is integrally ensured, the high ground clearance is ensured, and meanwhile, the movement of the inclination angle of the transmission shaft is ensured to be within a reasonable range; and the long bolt passes through a third hole site on the machining surface of the lower push support, machining hole sites of the middle axle and the rear axle and four large machined boss hole sites of the upper balance beam from bottom to top, and the bosses are tightened by nuts.
The large air bag and the small air bag are both air bags without built-in limiting blocks so as to ensure the up-down jumping stroke, the reference height is 250 +/-20 mm, the stroke of the air bags is 135mm-550mm, and the up-down jumping stroke allowed by the axle is +/-80 mm; the top welding studs of the two air bags are fastened with the air bag bracket of the frame through nuts.
The large support comprises a fixed support and a bearing cover, the fixed support and the bearing cover are both castings, are fixedly assembled through bolts, and are pressed with rubber bearings, so that a straight section of the stabilizer bar passes through the large supports on two sides, end parts on two sides of the stabilizer bar are pressed with bushings, the straight section of the stabilizer bar is connected with a fork-shaped structure on one section of the suspender through a step shaft bolt, a machining round hole at the other end of the suspender is pressed with the rubber bushing, the straight section of the stabilizer bar is connected with a lifting lug on the upper surface of the upper equalizing beam through the step shaft bolt, and the front stabilizer bar and the rear stabilizer bar are symmetrical corresponding to a middle axle and a rear axle; the lower parts of the fixed support fork-shaped supporting legs are machined with through holes, and the front sides and the rear sides of the supporting legs are connected with ball pins which are pushed forwards and backwards and are connected through long bolts.
The shock absorber support body is a bent piece, and a welding cylinder is arranged on the shock absorber support body; the two sides of the upper part of the damper are provided with large gaskets which are clamped between the two cylinders together with the upper part of the shock absorber and are connected through stepped shaft bolts, and the lower part of the shock absorber is also provided with two large gaskets which are connected with side hole positions of the upper balance beam through stepped shaft bolts; the stroke of the damper is between 300mm and 700 mm.
The limiting bracket comprises a limiting bracket body and a buffer block, the limiting bracket body is a bending tailor-welded part and is provided with a large arc, and the buffer block is connected with the limiting bracket body through a bolt; the distance between the buffer block and the upper surface of the upper equalizing beam is 50-100 mm, so that the upward jump of the rear axle is limited before the limit of the piston stroke in the large air bag and the small air bag.
The push-up support comprises a frame mounting surface and push-up mounting surfaces, and the front and rear push-up mounting surfaces are connected with the V-shaped push through bolts through upper hole positions of the push-up mounting surfaces.
The airbag lifting support is a V-shaped push single ball head end connecting support, is designed integrally with the lifting support, and is provided with an airbag lifting support-push-up hole site, an airbag lifting support lower part hole site, an airbag upper part fixing hole site and a hole site IV, the airbag lifting support-push-up hole site is connected with the V-shaped push single ball head end through a self ball pin bolt, and the airbag lifting support lower part hole site is connected with a rear axle bolt; the stud at the upper part of the lifting air bag penetrates through the fixed hole position at the upper part of the air bag, and the lower end face of the stud is connected with the lower lifting camber beam through a bolt; the lower lifting camber beam is an integrated stamping die part; the fixed support is a bent piece, is connected with the frame through a bolt, and is supported by a sleeve in the middle to ensure the verticality of the lifting air bag; the large air bag and the small air bag are controlled to be lifted by 60-80 mm while the whole vehicle has high ground clearance and high trafficability, and the rear axle is lifted by 120-140 mm by taking the height as a reference.
Has the advantages that: the utility model can ensure the compactness of the chassis arrangement while ensuring the stability and the transmission performance of the rear suspension, ensures more reasonable space utilization, ensures the transverse stability of the vehicle and the light weight of the suspension system, greatly ensures the vehicle trafficability, can adjust the driving form according to the road condition and the bearing requirement, has better road condition adaptability and higher fuel economy.
Drawings
FIG. 1 is a schematic view of the structure of the utility model with a frame;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3a is a first schematic structural view of a top equalizer beam according to the present invention;
FIG. 3b is a schematic structural view of a top equalizer beam according to the present invention;
FIG. 4 is a schematic view of a push-down stand according to the present invention;
FIG. 5 is a schematic structural view of a large stent according to the present invention; (ii) a
FIG. 6 is a schematic view of a stabilizer bar assembly according to the present invention;
FIG. 7 is a schematic view of the spacing bracket of the present invention;
FIG. 8 is a schematic view of an air bag lifting bracket according to the present invention;
FIG. 9a is a first schematic structural view of a push-up stand according to the present invention;
FIG. 9b is a schematic structural view of the push-up stand of the present invention;
FIG. 10a is a first schematic structural diagram of a bridge interface according to the present invention;
FIG. 10b is a second schematic structural diagram of a bridge interface according to the present invention;
FIG. 11 is a schematic view of a rear lift assembly of the transaxle of the present invention;
fig. 12 is a schematic diagram of the ground clearance measurement of the present invention.
In the figure: 1 frame, 2 small airbags, 3 large airbags, 4 downward pushing supports, 5 large supports, 6 straight thrust rods, 7 stabilizer rods, 8 suspension rods, 9 middle axles, 10 rear axles, 11 upward pushing supports, 12V pushing, 13 upward balancing beams, 14 limiting supports, 15ECAS valves, 16 dampers, 17 damper supports, 18 lifting airbags, 19 airbag lifting supports, 20 downward lifting curved beams, 21 fixing supports, 22 sleeves, 23 bosses, 24 machining hole sites, 25 positioning pin sites, 41 positioning pin sites, 42 hole sites, 43 lower leg holes, 51 fixing supports, 52 bearing covers, 53 rubber bearings, 111 frame mounting surfaces, 112 upward pushing mounting surfaces, 131 hole sites, 132 hole sites, 134 large boss hole sites, 135 lifting lugs, 136 hole sites, 137 positioning slots, 141 limiting block support bodies, 142 buffer blocks, 191 airbag lifting supports, upward pushing hole sites, 192 airbag lifting support lower parts, four positioning holes, four positioning, 193 the upper fixing hole site of the gasbag, 194 the hole site four.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-12, the present invention provides a rear lifting air suspension of a high-lift chassis, which comprises a vehicle frame 1, a shock absorber bracket 17, a damper 16, an ECAS 15, a limit bracket 14, an upper equalizing beam 13, a suspension rod 8, a stabilization rod 7, a straight thrust rod 6, a large bracket 5, a large airbag 3, a small airbag 2, a lower thrust bracket 4, a middle axle 9, a rear axle 10, an upper thrust bracket 11, a V thrust 12, a sleeve 22, a fixing bracket 21, a lower lifting curved beam 20, an airbag lifting bracket 19 and a lifting airbag 18, wherein the upper equalizing beam 13 is respectively connected with the upper parts of the middle axle 9 and the rear axle 10 through positioning holes, and the lower thrust bracket 4 is respectively connected with the lower parts of the middle axle 9 and the rear axle 10 through positioning holes; the limiting bracket 14 and the shock absorber bracket 17 are respectively connected to the outer side of the frame 1, the upper part of the damper 16 is connected with the shock absorber bracket 17, and the lower part of the damper is connected with the upper equalizing beam 13; the stabilizer bar 7 is provided with a bush and connected with a boring hole of the large bracket 5, and the large bracket 5 and the push-up bracket 11 are provided with shared hole positions and are respectively arranged at the outer side and the inner side of the frame 1; the suspension rod 8 is connected with the stabilizer bar 7 through a stepped shaft, and the suspension rod 8 is connected with a lifting lug of the upper equalizing beam 13; the double-ball head part of the V-shaped push 12 is connected with a push-up bracket 11, and the single-ball head part is connected with the middle axle 9 and the rear axle 10 through the bracket; the straight thrust rod 6 is connected with a hole position at the lower end of the large support 5 through a ball pin at one end, and the ball pin at the other end is connected with the lower push support 4; the frame air bag bracket is connected to the outer side of the frame 1, the upper ends of the large air bag 3 and the small air bag 2 are connected with the frame air bag bracket, and the lower ends of the large air bag 3 and the small air bag 2 are connected with the end surfaces of front and rear cantilevers of the upper balance beam 13; the air bag lifting bracket 19 is a connecting piece of the push-up bracket 11 and the rear axle 10, the fixed bracket 21 is connected with the frame 1, and the lower lifting camber beam 20 and the sleeve 22 are connected with the fixed bracket 21; the lifting air bag 18 is connected at its upper part to an air bag lifting bracket 19 and at its lower part to the middle of a lower lifting camber beam 20.
As shown in fig. 2, 3, 4, 6 and 10, the cantilevers at the front and rear ends of the upper equalizing beam 13 are provided with a first hole site 131 and a second hole site 132, the side surfaces of the cantilevers are provided with a side hole site 136, and the upper surfaces of the cantilevers are provided with lifting lugs 135; the plane of the first hole site 131 and the second hole site 132 is a machined surface; a small boss is machined on the upper surface of the second hole site 132, and a lifting lug 135 is arranged on the surface of the small boss; the upper equalizing beam 13 is fixed with a connecting rod bracket of the ECAS valve 15 through a second hole position 132 by using a bolt, and the upper end of the ECAS valve 15 is connected with the frame 1 through a bolt; the end surfaces of the bottoms of the large air bag 3 and the small air bag 2 are in contact with the machined surfaces of the first hole site 131 and the second hole site 132 and are connected through bolts; the lower end part of the damper 16 is connected with a side hole 136 of the upper equalizing beam 13 through a stepped shaft bolt, and a large gasket is added in the middle to prevent abrasion and collision; the end part of the suspender 8 is inserted into the middle of the lifting lug 135 of the upper equalizing beam 13 and is fixed by a step shaft bolt; the three surfaces of the lower part of the upper equalizing beam 13 are machined surfaces, and positioning grooves 137 are arranged on the two side surfaces of the upper equalizing beam and used for pre-positioning and limiting with bosses 23 of the middle axle 9 and the rear axle 10 so as to limit the front-back and left-right displacement of the upper equalizing beam on the upper part of the middle axle; the upper equalizing beam 13 is symmetrical left and right with the center plane of the frame and symmetrical front and back with the center plane of the rear axle.
The axle housing sections of the middle axle 9 and the rear axle 10 are rounded rectangles, and in order to ensure a 3-degree inclination angle of the transmission shaft, the machined bosses and the rectangular sections have 3-degree included angles, so that the upper balance beam 13 is ensured to be a symmetrical part; the lower parts of the middle axle 9 and the rear axle 10 are provided with a first positioning pin hole 25 for press-fitting a positioning pin, the positioning pin is connected with a second positioning pin hole 41 on the lower push support 4, and a ball pin hole position of the straight thrust rod 6 is in bolt connection with a lower support leg hole 43 on the lower push support 4; the long bolt passes through the third hole site 42 of the machined surface of the lower push support 4, the machined hole sites 24 of the middle axle 9 and the rear axle 10 and the four machined large boss hole sites 134 of the upper balance beam 13 from bottom to top, and the bosses are tightened by nuts.
The large airbag 3 and the small airbag 2 are both airbags without built-in limiting blocks so as to ensure the up-and-down jumping stroke, the reference height is 250 +/-20 mm, the travel of the airbags is 135mm-550mm, and the up-and-down jumping stroke allowed by the axle is +/-80 mm; the top welding studs of the two air bags are fastened with the air bag support of the frame 1 through nuts, and angle steel tools need to be manufactured during fastening so as to ensure that the two equal cross beams on the two sides of the axle are flush and symmetrical after being fastened.
As shown in fig. 3, 5 and 6, the large support 5 comprises a fixed support 51 and a bearing cover 52, the fixed support 51 and the bearing cover 52 are both castings, are fixedly assembled through bolts, are provided with a tool and are matched and bored (the matched and bored holes are symmetrical front and back), a rubber bearing 53 is pressed, so that a straight section of the stabilizer bar 7 passes through the large supports 5 on two sides, end parts on two sides of the stabilizer bar 7 are pressed and sleeved with bushings, the bushings are connected with a fork-shaped structure on one section of the suspender 8 through stepped shaft bolts, a machining round hole on the other end of the suspender 8 is pressed and sleeved with the rubber bushing, the bushings are connected with a lifting lug 135 on the upper surface of the upper equalizing beam 13 through the stepped shaft bolts, and the front and back stabilizer bars 7 are symmetrical corresponding to the middle axle 9 and the rear axle 10; the lower parts of the fork-shaped supporting legs of the fixed supports 51 are machined with through holes, and the front sides and the rear sides of the supporting legs are connected with ball pins which are pushed forwards and backwards and are connected through long bolts.
As shown in fig. 1 and 2, the body of the shock absorber support 17 is a bent piece, and a welding cylinder is arranged on the bent piece; the two sides of the upper part of the damper 16 are provided with large gaskets, the large gaskets and the upper part of the damper are clamped between the two cylinders and are connected through stepped shaft bolts, and the two large gaskets are additionally arranged at the lower part of the damper and are connected with side hole positions 136 of the upper balance beam 13 through the stepped shaft bolts; the stroke of the damper 16 is between 300mm and 700 mm.
As shown in fig. 1 and 7, the limiting bracket 14 includes a limiting bracket body 141 and a buffer block 142, the limiting bracket body 141 is a bent tailor-welded part and has a large arc thereon, so as to prevent the limiting bracket 14 from interfering with the movement of the connecting rod of the ECAS valve 15 when the middle axle 9 and the rear axle 10 are moved up and down and the road conditions are distorted, and the buffer block 142 is connected with the limiting bracket body 141 through a bolt; the distance between the buffer block 142 and the upper surface of the upper balance beam 13 is 50-100 mm, so that the upward jump of the rear axle is limited before the limit of the piston stroke in the large air bag 3 and the small air bag 2, the service life of the air bags is ensured, and the operation safety of the whole rear suspension system is ensured; the buffer block 142 can be replaced as required, and the compression degree can be adjusted according to the requirement for the height, so that the buffer effect is ensured.
The push-up bracket 11 comprises a frame mounting surface 111 and a push-up mounting surface 112, and the front and rear push-up mounting surfaces 112 are connected with the V-shaped push 12 through bolt holes on the upper mounting surfaces.
As shown in fig. 1 and 8, the airbag lifting bracket 19 is a single V-push ball-end connecting bracket, and is designed to be integrated with the lifting bracket, and is provided with an airbag lifting bracket-push-up hole site 191, an airbag lifting bracket lower hole site 192, an airbag upper fixing hole site 193, and a hole site four 194, the airbag lifting bracket-push-up hole site 191 is connected with the single ball end of the V-push 12 through a ball pin bolt of the airbag lifting bracket, and the airbag lifting bracket lower hole site 192 is connected with the rear axle 10 through a bolt; the stud at the upper part of the lifting air bag 18 passes through the air bag upper fixing hole position 193, and the lower end surface of the stud is connected with the lower lifting camber beam 20 through a bolt; the lower lifting camber beam 20 is an integral stamping die part, and the thin-wall plate ensures the rigidity and strength of the thin-wall plate through the cross section in the shape of a Chinese character 'ji', so that the light weight of the thin-wall plate is ensured; the fixed support 21 is a bending part and is connected with the frame 1 through a bolt, in order to prevent excessive deformation when the lower lifting bent beam 20 and the fixed support 21 are tightened, a sleeve 22 is added in the middle for auxiliary support, so that the lifting air bag 18 is ensured to be vertical, the wall thickness of the sleeve 22 is determined according to the tightening torque, and the two sleeves are arranged on one side and play a supporting role; the large air bag 3 and the small air bag 2 are controlled to be lifted by 60-80 mm while the whole vehicle has high ground clearance and high trafficability, and the rear axle is lifted by 120-140 mm by taking the height as a reference.
In operation, two suspension heights can be adjusted according to ECAS: when the double-axle drive is carried out, the height of the suspension is low, the bearing is ensured, and the gravity center is lowered; when the single axle drive is needed, the vehicle is static, 8 bearing airbags are inflated, the reference height of the suspension is lifted by 60mm, meanwhile, the lifting airbags are compressed by 60mm to reach the second reference height, the rear drive axle is lifted again, and the rear drive axle can be lifted by 120mm-140mm according to the requirement.
The large airbag 3 and the small airbag 2 are both airbags without built-in limiting blocks so as to ensure the up-and-down jumping stroke, the reference height is 250 +/-20 mm, the travel of the airbags is 135mm-550mm, and the up-and-down jumping stroke allowed by the axle is +/-80 mm; the top welding studs of the two air bags are fastened with the air bag bracket of the frame 1 through nuts.
The utility model ensures the compactness of the chassis arrangement, ensures more reasonable space utilization, ensures the transverse stability of the vehicle and the light weight of a suspension system, greatly ensures the vehicle passing property and has better road condition adaptability.
The above-described embodiments of the utility model are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the utility model are intended to be embraced therein.
Claims (9)
1. A high lift chassis's back lift air suspension characterized in that: the device comprises a frame (1), a shock absorber support (17), a damper (16), an ECAS valve (15), a limiting support (14), an upper equalizing beam (13), a suspender (8), a stabilizer bar (7), a straight thrust rod (6), a large support (5), a large air bag (3), a small air bag (2), a lower pushing support (4), a middle axle (9), a rear axle (10), an upper pushing support (11), a V pushing support (12), a sleeve (22), a fixing support (21), a lower lifting curved beam (20), an air bag lifting support (19) and a lifting air bag (18), wherein the upper equalizing beam (13) is respectively connected with the upper parts of the middle axle (9) and the rear axle (10) through positioning holes 19, and the lower pushing support (4) is respectively connected with the lower parts of the middle axle (9) and the rear axle (10) through the positioning holes; the limiting bracket (14) and the shock absorber bracket (17) are respectively connected to the outer side of the frame (1), the upper part of the damper (16) is connected with the shock absorber bracket (17), and the lower part of the damper is connected with the upper equalizing beam (13); the stabilizer bar (7) is provided with a bush and connected with a boring hole of the large bracket (5), and the large bracket (5) and the push-up bracket (11) are provided with shared hole sites and are respectively arranged at the outer side and the inner side of the frame (1); the suspension rod (8) is connected with the stabilizer bar (7) through a stepped shaft, and the suspension rod (8) is connected with a lifting lug (135) of the upper equalizing beam (13); the double ball heads of the V-shaped push (12) are connected with a push-up bracket (11), and the single ball head is connected with the middle axle (9) and the rear axle (10) through the bracket; the straight thrust rod (6) is connected with a hole position at the lower end of the large support (5) through a ball pin at one end, and the ball pin at the other end is connected with the lower pushing support (4); the air bag bracket of the frame (1) is connected to the outer side of the frame (1), the upper ends of the large air bag (3) and the small air bag (2) are connected with the air bag bracket of the frame, and the lower ends of the large air bag and the small air bag are connected with the end surfaces of front and rear cantilevers of the upper balance beam (13); the air bag lifting support (19) is a connecting piece of an upward pushing support (11) and a rear axle (10), the fixed support (21) is connected with the frame (1), and the lower lifting camber beam (20) and the sleeve (22) are connected with the fixed support (21); the upper part of the lifting air bag (18) is connected with an air bag lifting bracket (19), and the lower part of the lifting air bag is connected with the middle part of the lower lifting camber beam (20).
2. The high lift chassis rear lift air suspension of claim 1, wherein: the cantilever at the front end and the rear end of the upper equalizing beam (13) is provided with a first hole site (131) and a second hole site (132), the side surface is provided with a side hole site (136), and the upper surface is provided with a lifting lug (135); the plane of the first hole site (131) and the second hole site (132) is a machined surface; a small boss is machined on the upper surface of the second hole site (132), and a lifting lug (135) is arranged on the surface of the small boss; the upper equalizing beam (13) is fixed with a connecting rod bracket of the ECAS valve (15) through a second hole position (132) by using a bolt, and the upper end of the ECAS valve (15) is connected with the frame (1) through the bolt; the end faces of the bottoms of the large air bag (3) and the small air bag (2) are in contact with the machined surfaces of the first hole site (131) and the second hole site (132) and are connected through bolts; the lower end part of the damper (16) is connected with a side hole site (136) of the upper equalizing beam (13) through a step shaft bolt, and a large gasket is added in the middle; the end part of the suspender (8) is inserted into the middle of a lifting lug (135) of the upper equalizing beam (13) and is fixed by a step shaft bolt; the three surfaces of the lower part of the upper equalizing beam (13) are machined surfaces, and positioning grooves (137) are arranged on the two side surfaces and used for pre-positioning and limiting with bosses (23) of the middle axle (9) and the rear axle (10); the upper equalizing beam (13) is symmetrical left and right with the central plane of the frame and symmetrical front and back with the central plane of the rear axle.
3. The high lift chassis rear lift air suspension of claim 2, wherein: the sections of axle housings of the middle axle (9) and the rear axle (10) are rounded rectangles, and in order to ensure that the inclination angle of the transmission shaft is 3 degrees, the processing bosses and the rectangular sections form an included angle of 3 degrees; the lower parts of the middle axle (9) and the rear axle (10) are provided with a first positioning pin hole (25) for press-fitting a positioning pin, the positioning pin is connected with a second positioning pin hole (41) on the push-down bracket (4), and a ball pin hole position of the straight thrust rod (6) is in bolt connection with a lower support leg hole (43) on the push-down bracket (4); the long bolt penetrates through a third hole site (42) of the machining surface of the lower push support (4), a machining hole site (24) of the middle axle (9) and the rear axle (10) and four machining large boss hole sites (134) of the upper balance beam (13) from bottom to top, and the bosses are tightened through nuts.
4. The high lift chassis rear lift air suspension of claim 1, wherein: the large air bag (3) and the small air bag (2) are both air bags without built-in limiting blocks so as to ensure the up-down jumping stroke, the reference height is 250 +/-20 mm, the stroke of the air bags is 135mm-550mm, and the up-down jumping stroke allowed by the axle is +/-80 mm; the top welding studs of the two air bags are fastened with the air bag bracket of the frame (1) through nuts.
5. The high lift chassis rear lift air suspension of claim 1, wherein: the large support (5) comprises a fixed support (51) and a bearing cover (52), the fixed support (51) and the bearing cover (52) are both castings, are fixedly assembled through bolts and are press-fitted with rubber bearings (53), so that the straight section of the stabilizer bar (7) passes through the large supports (5) on two sides, end parts of two sides of the stabilizer bar (7) are press-fitted with bushings, the bushings are connected with the fork-shaped structure on one section of the suspender (8) through stepped shaft bolts, the machined round holes at the other end of the suspender (8) are press-fitted with the rubber bushings, the bushings are connected with lifting lugs (135) on the upper surface of the upper equalizing beam (13) through the stepped shaft bolts, and the front stabilizer bar and the rear stabilizer bar (7) are symmetrical corresponding to the middle axle (9) and the rear axle (10); the lower parts of the fork-shaped supporting legs of the fixed supports (51) are machined with through holes, and the front sides and the rear sides of the supporting legs are connected with ball pins which are pushed forwards and backwards and are connected through long bolts.
6. The high lift chassis rear lift air suspension of claim 1, wherein: the shock absorber support (17) body is a bent piece, and a welding cylinder is arranged on the bent piece; the two sides of the upper part of the damper (16) are provided with large gaskets, the large gaskets and the upper part of the shock absorber are clamped between the two cylinders and are connected through stepped shaft bolts, and the lower part of the shock absorber is also provided with two large gaskets which are connected with side hole positions (136) of an upper balance beam (13) through stepped shaft bolts; the stroke of the damper (16) is between 300mm and 700 mm.
7. The high lift chassis rear lift air suspension of claim 1, wherein: the limiting bracket (14) comprises a limiting bracket body (141) and a buffer block (142), the limiting bracket body (141) is a bending and splicing welding piece and is provided with a large arc, and the buffer block (142) is connected with the limiting bracket body (141) through a bolt; the distance between the buffer block (142) and the upper surface of the upper equalizing beam (13) is 50-100 mm, so that the upper jump of the rear axle is limited before the limit of the piston stroke in the large air bag (3) and the small air bag (2).
8. The high lift chassis rear lift air suspension of claim 1, wherein: the push-up support (11) comprises a frame mounting surface (111) and a push-up mounting surface (112), and the front and rear push-up mounting surfaces (112) are connected with the V-shaped push (12) through bolts through upper hole positions of the front and rear push-up mounting surfaces.
9. A rear lift air suspension for a high lift chassis according to any of claims 1 to 8 wherein: the air bag lifting support (19) is a V-shaped single ball end connecting support, is designed with the lifting support in an integrated mode, and is provided with an air bag lifting support-push-up hole site (191), an air bag lifting support lower hole site (192), an air bag upper fixing hole site (193) and a hole site four (194), the air bag lifting support-push-up hole site (191) is connected with the single ball end of the V-shaped push (12) through a ball pin bolt of the air bag lifting support, and the air bag lifting support lower hole site (192) is connected with a rear axle (10) through a bolt; the stud at the upper part of the lifting air bag (18) penetrates through the air bag upper fixing hole (193), and the lower end face of the stud is in bolted connection with the lower lifting camber beam (20); the lower lifting camber beam (20) is an integral stamping die part; the fixed support (21) is a bent piece, is connected with the frame (1) through a bolt, and is supported by a sleeve (22) in the middle to ensure the verticality of the lifting air bag (18); the large air bag (3) and the small air bag (2) are controlled to be lifted by 60-80 mm while the whole vehicle has high ground clearance and high trafficability, and the rear axle is lifted by 120-140 mm by taking the height as a reference.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121705145.3U CN215360826U (en) | 2021-07-26 | 2021-07-26 | Rear lifting air suspension of high-lift chassis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121705145.3U CN215360826U (en) | 2021-07-26 | 2021-07-26 | Rear lifting air suspension of high-lift chassis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257274A (en) * | 2022-08-01 | 2022-11-01 | 一汽解放汽车有限公司 | Rear suspension control system |
| CN115432068A (en) * | 2022-09-30 | 2022-12-06 | 中国重汽集团济南动力有限公司 | Light-weight ultra-low-position four-airbag air suspension system |
| CN115923420A (en) * | 2022-12-27 | 2023-04-07 | 中国重汽集团济南动力有限公司 | High-position electric control air suspension |
-
2021
- 2021-07-26 CN CN202121705145.3U patent/CN215360826U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257274A (en) * | 2022-08-01 | 2022-11-01 | 一汽解放汽车有限公司 | Rear suspension control system |
| CN115432068A (en) * | 2022-09-30 | 2022-12-06 | 中国重汽集团济南动力有限公司 | Light-weight ultra-low-position four-airbag air suspension system |
| CN115432068B (en) * | 2022-09-30 | 2024-04-12 | 中国重汽集团济南动力有限公司 | Lightweight ultralow-position four-airbag air suspension system |
| CN115923420A (en) * | 2022-12-27 | 2023-04-07 | 中国重汽集团济南动力有限公司 | High-position electric control air suspension |
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