CN107323528B - Improved generation air suspension - Google Patents
Improved generation air suspension Download PDFInfo
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- CN107323528B CN107323528B CN201710547932.1A CN201710547932A CN107323528B CN 107323528 B CN107323528 B CN 107323528B CN 201710547932 A CN201710547932 A CN 201710547932A CN 107323528 B CN107323528 B CN 107323528B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
- B60G21/0551—Mounting means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/126—Mounting of pneumatic springs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The utility model relates to an improved air suspension, which is symmetrically provided with longitudinal beams, wherein a plurality of connecting holes are formed in the longitudinal beams; the beam is arranged between the two longitudinal beams and comprises a beam main body, and the beam main body is formed by integrally casting a beam pipe body and longitudinal beam connecting flanges symmetrically arranged at two ends of the beam pipe body; the two ends of the axles are supported and fixed by the bracket arms; four pairs of air bags respectively mounted on the air bag connecting panel; a pair of suspension brackets arranged at the two outer side ends of the longitudinal beam; two pairs of shock absorbers respectively arranged at two ends of the suspension bracket; and a pair of connecting lining plates arranged in the longitudinal beam. The utility model has the advantages that: the air suspension disclosed by the utility model can improve the sealing performance of the cross beam on the basis of air supply, ensure the structural strength of the cross beam, is more convenient to manufacture, and can reduce the height of the whole structure, so that the structure is more stable.
Description
Technical Field
The utility model relates to the field of automobile manufacturing, in particular to an improved air suspension.
Background
Since the birth of the mid-nineteenth century, air suspensions have undergone the development of a century, and have undergone various changes such as "pneumatic spring-air bag composite suspension→semi-active air suspension→central inflation/deflation suspension (i.e., ECAS electric control air suspension system)". It was applied to trucks, buses, cars and railroad locomotives until the fifties of the twentieth century. At present, the foreign high-grade buses almost all use air suspensions, the proportion of the heavy-duty trucks using the air suspensions is over 80 percent, and the application amount of the air suspensions on light automobiles is rapidly rising. Some cars are gradually provided with air suspensions, and the air suspensions are almost the only choice for use on some special vehicles (such as instrument cars, ambulances, special military vehicles, required container vehicles and the like with higher requirements on shock resistance).
At present, with the development of hydraulic and pneumatic control system technology of a truck, the air consumption of the whole truck on compressed air is obviously increased. In order to meet the requirement of increasing the air consumption of the whole vehicle, two main solutions are provided: 1. increasing the pressure of the compressed air system; 2. the capacity or number of air reservoirs is increased. The pressure of the compressed air system is improved, the related matched elements of the air circuit are required to meet the performance, and the realization is complex. Thus, increasing the capacity and number of air reservoirs is an easy to implement measure. However, the number of the air cylinders arranged increases, resulting in the following problems: increasing the weight and cost of the braking system; in a short wheelbase vehicle type or a vehicle type with more system configuration parts, for example, a tractor has the phenomenon that the arrangement space of an air reservoir is narrow or the arrangement is difficult.
Therefore, in view of the above-mentioned phenomena, in CN204527327U, a beam assembly with gas storage function is mentioned, which includes a beam tube, a rear axle control module, a gas inlet and outlet port, a water drain valve port, and a bracket; the cross beam pipe body is a tubular body and is used as a gas storage device, and the cross beam pipe body is preferably formed by welding two symmetrical cross beam connecting pieces and one tubular body, so that the strength of a frame longitudinal beam is enhanced, and a closed gas storage device is formed; the beam connecting piece is provided with an air inlet and outlet interface, a bolt connecting support, a water drain valve interface and a thrust rod connecting support. The air inlet and outlet interface is connected with the air source, the cross beam pipe body and the rear axle control module through the air pipeline and the connector, and the cross beam connecting piece is connected with the frame longitudinal beam through bolts. The utility model can increase the gas storage volume, reduce the number of the whole vehicle gas cylinders, correspondingly reduce the weight and cost of a braking system and save the arrangement space of the whole vehicle; because the beam assembly is arranged close to the axle, valves such as a rear axle control module and the like are integrated, the number of gas circuit elements is reduced, the length of a gas circuit is shortened, and the braking response time is improved.
In the structure, the cross beam is used as the air storage container, so that the number of air storage cylinders is reduced, and the arrangement space of the whole air storage container is saved. However, the beam tube body is of a split type structure, and is formed by welding a tubular body and two symmetrical beam connecting pieces, and the beam tube body is needed to replace an air cylinder, so that the requirements on sealing performance are very high, the requirements on welding quality are relatively strict, and meanwhile, the requirements on precision among parts are relatively high, so that the manufacturing and assembly are relatively troublesome; in addition, for the outer body of the cross beam, the outer body is used for connecting the left and right longitudinal beams of the frame, so that if the wall thickness is too thin, the structural strength of the cross beam pipe body cannot be guaranteed, and the integral connection is affected.
For another example, patent CN202192958U discloses a bracket for left/right bracket of air suspension of passenger car, which is composed of a base plate, a connecting end of a transverse stable connecting rod, a connecting end of a longitudinal stable connecting rod, an air bag connecting panel and a connecting point of a shock absorber, and the technical key points are as follows: the QT600-3 nodular cast iron is adopted as the material, and the connecting point of the shock absorber is a hinge support on the bottom plate; the bottom plate, the connecting end of the transverse stable connecting rod, the connecting end of the longitudinal stable connecting rod, the air bag connecting panel and the hinge support are formed into a whole through casting at one time. The utility model improves the connecting point of the shock absorber from the original vertical mounting hole to the hinge support, thereby avoiding the problem of breakage of the connecting rod of the shock absorber. The QT600-3 spheroidal graphite cast iron is adopted as a material, and each functional part is cast and formed into a whole at one time, so that the strength is increased, the weight is reduced, the production cost is saved by more than 30 percent compared with that of a forged steel welding part, and the energy conservation and consumption reduction are realized.
The left/right bracket beam bracket in the structure solves the problem of breakage of the connecting rod of the shock absorber, thereby realizing energy saving and consumption reduction. However, during the use process, certain defects still exist: the height of the air bag connecting panel is higher than that of the air bag connecting panel, and the air bag connecting panel is used for installing the air bag, so that the height of the air bag connecting panel and the air bag is higher than that of the air bag connecting panel, and the whole structure is higher than that of the air bag connecting panel, so that the air bag connecting panel is inconvenient to install and the structure is unstable.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an improved air suspension, which can improve the sealing performance of a cross beam and ensure the structural strength of the cross beam on the basis of ensuring air supply, is more convenient to manufacture, can reduce the height of the whole structure and ensures that the structure is more stable.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides an improved generation air suspension, this crossbeam is used for connecting the longeron about the frame, and its innovation point lies in: comprising
Symmetrically arranged longitudinal beams are symmetrically arranged, and a plurality of connecting holes are formed in the longitudinal beams;
the beam comprises a beam main body, the beam main body is formed by integrally casting a beam pipe body and a pair of longitudinal beam connecting flanges symmetrically arranged at two ends of the beam pipe body, meanwhile, a V-shaped pushing seat group is integrally cast on the outer wall of the beam pipe body, the beam pipe body is of a tubular structure with two open ends, and meanwhile, two ends of the beam pipe body in the long axis direction are provided with an air inlet and an air outlet which are communicated with the inner cavity of the beam pipe body, and the inner wall of the beam pipe body is also provided with a reinforcing convex rib group; the sealing end covers are arranged at the two ends of the cross beam pipe body in the long axis direction, the cross sections of the sealing end covers are T-shaped, one end with a small caliber of the sealing end cover extends into the cavity of the cross beam pipe body and is fixedly connected with the cross beam pipe body through bolts, and a sealing ring group which is attached to the inner wall of the cross beam pipe body is further arranged on the outer wall of one section of the sealing end cover extending into the cavity of the cross beam pipe body;
the two ends of the axle are supported and fixed by the bracket arms, the bracket arms comprise a bracket arm main body, the upper end surface of the bracket arm main body is provided with an axle supporting panel which protrudes upwards, and the axle supporting panel is provided with four axle fixing holes which are distributed in a rectangular shape; the air bag connecting panels are connected with the two ends of the bracket arm main body and are connected with the bracket arm main body through an arc-shaped connecting section which is bent downwards, so that the height of the air bag connecting panels is not higher than that of the bracket arm main body, and a positioning mounting hole is formed in the middle of the air bag connecting panels; the straight push rod connecting unit comprises a pair of straight push rod connecting seats arranged at two sides of the lower end of the supporting arm main body, and a straight push rod mounting through hole which is used for accommodating the installation of the straight push rod and is horizontally arranged is formed at the lower end of the straight push rod connecting seats; the shock absorber connecting unit comprises a shock absorber mounting hole which is arranged at the upper end of one of the arc-shaped connecting sections and is horizontally arranged, and the shock absorber mounting hole is positioned at one end close to the bracket arm main body; the stabilizer bar connecting unit comprises a semicircular stabilizer bar mounting through groove which is arranged at the lower end of the other arc-shaped connecting section and is horizontally arranged, the stabilizer bar mounting through groove is positioned at one end close to the bracket arm main body, the axis of the stabilizer bar mounting through groove is parallel to the axis of the shock absorber mounting hole, and the axis of the stabilizer bar mounting through groove is perpendicular to the axis of the straight push rod mounting through hole; a transverse stabilizer bar is respectively connected between the outer ends of the supporting arms, and two ends of the transverse stabilizer bar are fixed on the longitudinal beam through vertical connecting rods;
four pairs of air bags respectively arranged on the air bag connecting panel, the upper ends of the air bags are fixed with the bottom ends of the longitudinal beams, and the lower ends of the air bags are arranged on the air bag connecting panel;
the suspension bracket comprises a suspension bracket main body which is Y-shaped, and a pair of reinforcing ribs which extend from the upper end of the suspension bracket main body to the lower end of the suspension bracket main body are arranged on the suspension bracket main body; the upper end of the suspension bracket main body is provided with a longitudinal beam connecting unit, the longitudinal beam connecting unit comprises a longitudinal beam connecting seat positioned at the upper part of the suspension bracket main body, the middle part of the upper end of the longitudinal beam connecting seat is provided with a U-shaped groove, the longitudinal beam connecting seat is provided with a plurality of connecting holes which are in one-to-one correspondence with the longitudinal beams, the wall thickness of the connecting part of the longitudinal beam connecting seat and the saddle connecting plate is smaller than the wall thickness of the rest part of the longitudinal beam connecting seat, and the reduction amount of the wall thickness is consistent with the thickness of the saddle connecting plate; the lower end of the suspension bracket main body is provided with a straight push rod connecting unit, the straight push rod connecting unit comprises a pair of straight push rod connecting seats positioned at the lower part of the suspension bracket main body, a gap is reserved between the two straight push rod connecting seats, so that the lower end of the suspension bracket main body is provided with an arc through slot, the straight push rod connecting seats are provided with straight push rod mounting through holes which are used for accommodating the straight push rods and are horizontally arranged, and the suspension bracket is connected with the supporting arms through the straight push rods;
the two pairs of shock absorbers are respectively arranged at the two ends of the suspension bracket, the upper ends of the shock absorbers are fixed with the longitudinal beam, and the lower ends of the shock absorbers are arranged in shock absorber mounting holes of the bracket arms;
the connecting lining plates are arranged in the longitudinal beams, the lining plates comprise a pair of upper lining plates and a pair of lower lining plates which are positioned at the upper end and the lower end of the inner wall of the longitudinal beams, the upper lining plates and the lower lining plates are similar in structure, the upper lining plates and the lower lining plates are of an L-shaped structure formed by a connecting section which is vertically arranged and a bonding section which is horizontally arranged together, a plurality of connecting holes A corresponding to the fixing holes of the longitudinal beams are formed in the connecting section, and the bonding section is bonded with the upper end or the lower end of the inner wall of the longitudinal beams; at least one of the upper lining plate and the lower lining plate is provided with an expansion section extending towards the center direction of the longitudinal beam, the expansion section is positioned at the joint of the cross beam and the longitudinal beam, the length of the expansion section corresponds to the cross beam, and the expansion section is provided with a plurality of connecting holes B corresponding to the mounting holes of the cross beam.
Further, the V-shaped pushing seat groups are divided into two groups, the two groups are symmetrically distributed at two ends of the beam tube body, each group of V-shaped pushing seat groups is formed by two V-shaped pushing seats which are symmetrically distributed at two ends of the beam tube body in the long axis direction, V-shaped pushing seats are arranged on the V-shaped pushing seats, and the other ends of the V-shaped pushing seats are fixed on an axle.
Further, the inner wall of the beam tube body is also provided with reinforcing ribs, and the reinforcing ribs are positioned at positions corresponding to the V-shaped pushing seats on the inner wall of the beam tube body and correspond to the V-shaped pushing seats one by one; the thickness of the V-shaped pushing seat accounts for 1/3-1/2 of the diameter of the beam pipe body.
Furthermore, the sealing ring group is formed by two O-shaped sealing rings which are distributed in parallel, and an annular groove for embedding the O-shaped sealing rings is formed in the sealing end cover.
Furthermore, a blind hole for accommodating the installation of the sealing end cover is formed in the longitudinal beam connecting flange, and the depth of the blind hole is more than or equal to the thickness of a section of the sealing end cover positioned outside the cross beam pipe body; a boss is further arranged on one side, connected with the longitudinal beam, of the longitudinal beam connecting flange, and the thickness of the boss is consistent with that of the lining plate.
Furthermore, weight reducing grooves are formed in the bracket arm main body and the arc-shaped connecting section.
Further, the upper end surface of the axle supporting panel is positioned in the middle of the axle fixing hole and is also provided with a pair of positioning holes.
Furthermore, a cushion block is additionally arranged at the upper end of the air bag connecting panel.
Further, the two ends of the suspension bracket main body are provided with weight reducing grooves; the straight push rod connecting seat is waist-shaped; the connecting holes covered by the reinforcing ribs on the longitudinal beam connecting seat are blind holes, and the rest holes are through holes.
Further, arc transition is adopted between the two ends of the expansion section and the upper lining plate or the lower lining plate.
The utility model has the advantages that: in the utility model, the beam pipe body, the beam connecting piece and the V-shaped pushing seat are integrally cast, so that the assembly among the beam pipe body, the beam connecting piece and the V-shaped pushing seat is reduced, the machining precision is reduced, the machining is convenient, the connection machining among the components is reduced by adopting an integral casting forming mode, and the corresponding sealing performance is improved; in addition, the sealing end cover connected by bolts is adopted to seal the beam pipe body, so that the subsequent painting and anti-corrosion treatment are convenient.
Through set up the strengthening rib in the inner wall department of crossbeam body, avoid leading to the crossbeam body here the inner wall attenuation and lead to crossbeam body structural strength to receive the influence because of the installation of V type push away the seat, guaranteed the holistic structural strength of crossbeam body.
For the design of the V-shaped pushing seat, the thickness of the V-shaped pushing seat is controlled to be 1/3-1/2 of the diameter of the beam pipe body, so that the V-shaped pushing seat is thickened, subsequent processing and manufacturing are facilitated, and the structural strength is ensured.
For the arrangement of the sealing ring group, the sealing between the sealing end cover and the cross beam pipe body is realized through two parallel O-shaped sealing rings, and the sealing effect is effectively improved by adopting the double sealing structure.
Through set up the blind hole that holds the seal end cover on longeron flange, on the basis of guaranteeing the installation of seal end cover, avoid the seal end cover to bulge outside the longeron flange and interfere the installation between longeron flange and the longeron.
And set up the boss on longeron flange to can form the support between longeron flange and the longeron, avoid influencing the stability of connection because the welt leads to the clearance that exists between longeron flange and the longeron.
The cross beam of the utility model can be installed on a hollow suspension to be used as a tubular beam, and can be also installed in a transmission part to be used as an air reservoir, so that the air pressure fluctuation during gear shifting of the transmission can be compensated, and the gear shifting is more stable.
The air bag connecting panel is connected with the bracket arm main body through the arc connecting section which is bent downwards, so that the height of the air bag connecting panel can be reduced, the installation height of the corresponding air bag is also reduced, the whole gravity center is also lowered, and the structure is also more stable.
Through all open on trailing arm main part, arc linkage segment and subtract heavy groove, on guaranteeing the structural strength's of trailing arm main part and arc linkage segment basis, can alleviate the weight of trailing arm main part, arc linkage segment, and then alleviateed the weight of whole trailing arm, provide the basis for realizing the holistic lightweight of air suspension.
In the utility model, the locating hole is additionally arranged on the upper end surface of the axle supporting panel, so that the axle is conveniently located and installed.
The cushion block is arranged at the upper end of the air bag connecting panel, when the size of the air bag is smaller, a certain gap is reserved between the air bag and the air bag connecting panel, and at the moment, the gap of the part can be compensated by additionally arranging the cushion block between the air bag and the air bag connecting panel, so that the stability of connection is ensured.
The suspension bracket is only required to be connected with the longitudinal beam and the straight push rod, so that the load of connection of the suspension bracket is reduced, the suspension bracket can be thinned to reduce the weight of the suspension bracket, in addition, the U-shaped groove is formed at the upper end, the weight of the whole suspension bracket is further reduced, and meanwhile, the suspension bracket is additionally provided with the reinforcing rib which extends downwards from top to bottom to ensure the structural strength of the suspension bracket.
To the setting of longeron connecting seat, through making the upper end of longeron connecting seat thin to be connected between cooperation suspension support, saddle connecting plate and the longeron, avoid appearing the clearance after being connected between suspension support and the longeron because of the existence of saddle connecting plate, and influence the stability of connection.
The weight reducing grooves are formed in the two ends of the suspension bracket main body, so that the purpose of further reducing the overall weight of the suspension bracket is achieved, and a foundation is provided for the light weight of the subsequent overall air suspension; and to the design of straight push rod connecting seat, adopt the structure of waist shape for the surplus of straight push rod connecting seat is big, makes things convenient for the processing of straight push rod installation through-hole.
In the utility model, the connecting holes covered by the reinforcing ribs on the longitudinal beam connecting seat are designed to be blind holes instead of through holes, so that the structure of the reinforcing ribs is prevented from being influenced by processing the through holes on the basis of ensuring connection, and the strength of the whole structure is ensured.
Through add an expansion section corresponding to crossbeam length on at least one of last welt, lower welt, open simultaneously on the expansion section has the connecting hole corresponding with the crossbeam, like this to not unidimensional crossbeam, when its installation, the crossbeam size is big installs on last welt, lower welt, one side can install on the expansion section when the size is hour, if the size of crossbeam is undersize moreover, still can add the expansion section on will going up, lower welt, just so need not to process a plurality of welts of different specifications and change, convenience very, application scope is wide.
The length of the expansion section is controlled to be in a size corresponding to the cross beam, so that the expansion section is prevented from being too long to increase the weight of the lining plate, and a foundation is provided for the subsequent weight reduction of the air suspension.
The expansion section, the upper lining plate and the lower lining plate are in arc transition, so that the structure of the joint of the expansion section, the upper lining plate and the lower lining plate is more stable, and bending is avoided.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic view of an improved air suspension of the present utility model.
Fig. 2 is a schematic view of a beam in the present utility model.
Fig. 3 is a front view of the cross beam of the present utility model.
Fig. 4 is a cross-sectional view A-A of fig. 3.
Fig. 5 is a side view of a beam in accordance with the present utility model.
FIG. 6 is a schematic view of a bracket according to the present utility model.
Fig. 7 is a front view of the bracket of the present utility model.
Fig. 8 is a side view of a bracket according to the present utility model.
Fig. 9 is a schematic view of a suspension bracket according to the present utility model.
Fig. 10 is a front view of a suspension bracket of the present utility model.
Fig. 11 is a side view of a suspension bracket of the present utility model.
FIG. 12 is a schematic illustration of the connection of the liner to the cross members and stringers of the present utility model.
Fig. 13 is a front view of the upper liner plate of the present utility model.
Fig. 14 is a side view of the upper liner plate of the present utility model.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present utility model and are not intended to limit the utility model to the embodiments described.
An improved air suspension as shown in fig. 1-14, comprising
And a plurality of connecting holes are formed on the longitudinal beams 101, wherein the longitudinal beams 101 are symmetrically arranged.
A cross member 103 mounted between the stringers, the cross member 103 comprising, as can be seen in the schematic views of figures 2-5
The cross beam body is formed by integrally casting a cross beam pipe body 1 and a pair of longitudinal beam connecting flanges 2 symmetrically arranged at two ends of the cross beam pipe body 1, meanwhile, a V-shaped pushing seat group is integrally cast on the outer wall of the cross beam pipe body 1, the cross beam pipe body 1 is of a tubular structure with two open ends, meanwhile, two ends in the long axis direction of the cross beam pipe body 1 are provided with an air inlet 3 and an air outlet 4 communicated with the inner cavity of the cross beam pipe body 1, the inner wall of the cross beam pipe body 1 is further provided with a reinforcing rib group, the middle position of the bottom end of the cross beam pipe body 1 is further provided with a drain outlet 6, and impurities in the cross beam pipe body 1 can be conveniently discharged through the arrangement of the drain outlet 6.
The V-shaped pushing seat groups are two groups in total and are symmetrically distributed at two ends of the beam tube body 1, each V-shaped pushing seat group is formed by two V-shaped pushing seats 8 which are symmetrically distributed at two ends of the beam tube body 1 in the long axis direction, V-shaped pushing seats 8 are installed, the other ends of the V-shaped pushing seats are fixed on an axle, and the thickness of each V-shaped pushing seat 8 accounts for 1/3-1/2 of the diameter of the beam tube body 1. For the design of the V-shaped pushing seat 8, the thickness of the V-shaped pushing seat 8 is controlled to be 1/3-1/2 of the diameter of the beam pipe body 1, so that the V-shaped pushing seat 8 is thickened, subsequent processing and manufacturing are facilitated, and the structural strength is ensured.
As can be seen from the schematic diagram shown in fig. 3, the inner wall of the beam tube 1 is further provided with reinforcing ribs 9, and the reinforcing ribs 9 are located at positions on the inner wall of the beam tube 1 corresponding to the V-shaped pushing seats 8 and are in one-to-one correspondence with the V-shaped pushing seats 8. Through set up strengthening rib 9 in the inner wall department of crossbeam body 1, avoid leading to crossbeam body 1 structural strength to receive the influence because of the installation of V type push away seat 8 and lead to crossbeam body 1 here inner wall attenuation, guaranteed the holistic structural strength of crossbeam body 1.
The cross section of the sealing end covers 7 is T-shaped, one end with small caliber of the sealing end covers 7 stretches into the cavity of the beam tube body 1 and is fixedly connected with the beam tube body 1 through bolts, sealing of the beam tube body 1 is achieved through the sealing end covers 7 connected through the bolts, subsequent painting and anti-corrosion treatment are facilitated, and sealing ring groups attached to the inner wall of the beam tube body 1 are further mounted on the outer wall of one section of the sealing end covers 7 stretching into the cavity of the beam tube body 1.
The sealing ring group is formed by two parallel O-shaped sealing rings, and an annular groove for embedding the O-shaped sealing rings is formed on the sealing end cover 7. For the arrangement of the sealing ring group, the sealing between the sealing end cover 7 and the cross beam pipe body 1 is realized through two parallel O-shaped sealing rings, and the sealing effect is effectively improved by adopting the double sealing structure.
The longitudinal beam connecting flange 2 is provided with a blind hole for accommodating the sealing end cover 7, and the depth of the blind hole is larger than or equal to the thickness of a section of the sealing end cover 7 positioned outside the cross beam pipe body 1. By arranging the blind hole for accommodating the sealing end cover on the longitudinal beam connecting flange 2, the sealing end cover 7 is prevented from protruding out of the longitudinal beam connecting flange 2 to interfere with the installation between the longitudinal beam connecting flange 2 and the longitudinal beam on the basis of ensuring the installation of the sealing end cover 7.
A boss 10 is further arranged on one side, connected with the longitudinal beam, of the longitudinal beam connecting flange 2, a lining plate for connection is further arranged between the longitudinal beam connecting flange 2 and the longitudinal beam, and the thickness of the boss 10 is consistent with that of the lining plate. The boss 10 is arranged on the longitudinal beam connecting flange 2, so that a support can be formed between the longitudinal beam connecting flange 2 and the longitudinal beam, and the problem that the stability of connection is affected due to the fact that a gap exists between the longitudinal beam connecting flange 2 and the longitudinal beam is caused by a lining plate is avoided.
A pair of axles 104 mounted on the lower ends of the stringers 101, the axles 104 being supported and fixed at both ends by brackets 105. As can be seen in the schematic views of FIGS. 6-8, the brackets 105 comprise
The bracket body 11 is provided with an axle supporting panel 12 which protrudes upwards on the upper end surface of the bracket body 11, and four axle fixing holes 13 which are distributed in a rectangular shape are formed in the axle supporting panel 12.
A pair of locating holes 22 are also provided on the upper end surface of the axle support panel 12 at a position intermediate the axle securing holes 13. The positioning holes 22 are additionally arranged on the upper end surface of the plate of the axle supporting surface 12, so that the positioning and the installation of the axle are convenient.
The air bag connecting panel 14 is connected to the two ends of the bracket arm main body 11, the air bag connecting panel 14 is connected with the bracket arm main body 11 through the arc connecting section 15 which is bent downwards, so that the height of the air bag connecting panel 14 is not higher than that of the bracket arm main body 11, a positioning mounting hole 16 is formed in the middle of the air bag connecting panel 14, the air bag connecting panel is connected with the bracket arm main body through the arc connecting section 16 which is bent downwards, the height of the air bag connecting panel 14 can be reduced, the mounting height of a corresponding air bag is reduced, the whole gravity center is lowered, and the structure is more stable.
A cushion block is additionally arranged at the upper end of the air bag connecting panel 14. To the upper end of gasbag connection panel 14 set up the cushion, when the size of gasbag is less, certain clearance can be left between gasbag and the gasbag connection panel 14, and the clearance of this part is compensated to accessible add the cushion between gasbag and gasbag connection panel 14 this moment, guarantees the stability of connection, and the installation is also more convenient simultaneously.
The straight push rod connecting unit comprises a pair of straight push rod connecting seats 17 arranged on two sides of the lower end of the supporting arm body 11, and a straight push rod mounting through hole 18 which is used for accommodating the installation of the straight push rod and is horizontally arranged is arranged at the lower end of the straight push rod connecting seats 17.
A damper connecting unit including a damper mounting hole 19 provided at an upper end of one of the arc-shaped connecting sections 16 and horizontally provided, the damper mounting hole 19 being located at an end near the bracket body 11.
The stabilizer bar connecting unit comprises a semicircular stabilizer bar mounting through groove 20 which is arranged at the lower end of the other arc-shaped connecting section 16 and horizontally arranged, the stabilizer bar mounting through groove 20 is positioned at one end close to the bracket arm main body 11, a pair of stabilizer bar mounting holes are also formed in two ends of the stabilizer bar mounting through groove 20 at the lower end of the arc-top connecting section 16, and the axis of the stabilizer bar mounting through groove 20 is parallel to the axis of the shock absorber mounting hole 19 and perpendicular to the axis of the straight push rod mounting through hole 18.
A transverse stabilizer bar 106 is respectively connected between the outer ends of the bracket arms 105, and two ends of the transverse stabilizer bar 106 are fixed on the longitudinal beam 101 through vertical connecting rods 107.
Four pairs of air bags 108 respectively mounted on the air bag connecting panel 14, the upper ends of the air bags 108 are fixed with the bottom ends of the stringers 101, and the lower ends are mounted on the air bag connecting panel 14.
As can be seen from the schematic views shown in fig. 9 to 11, the suspension brackets 109 include a pair of suspension brackets 109 provided at both outer ends of the side members 101
A suspension bracket body 31, the suspension bracket body 31 having a Y-shape, and a pair of reinforcing ribs 32 extending from an upper end of the suspension bracket body 31 to a lower end of the suspension bracket body 31 are provided on the suspension bracket body 31.
Weight-reducing grooves 40 are formed at both ends of the suspension bracket main body 31. The weight reduction grooves 40 are formed at both ends of the suspension bracket main body 31, so that the purpose of further reducing the overall weight of the suspension bracket is achieved, and a foundation is provided for the weight reduction of the subsequent overall air suspension.
A longitudinal beam connecting unit is arranged at the upper end of the suspension bracket main body 31 and comprises a longitudinal beam connecting seat 33 positioned at the upper end of the suspension bracket main body 31, a U-shaped groove 34 is arranged at the middle position of the upper end of the longitudinal beam connecting seat 33, a plurality of connecting holes 35 which are in one-to-one correspondence with the longitudinal beams are arranged on the longitudinal beam connecting seat 33, a groove structure 36 is arranged at the connecting position of the longitudinal beam connecting seat 33 and the saddle connecting plate 102, as shown in figure 3, so that the wall thickness of the upper end of the longitudinal beam connecting seat 33 is smaller than the wall thickness of the lower end of the longitudinal beam connecting seat 33, and the depth of the groove structure 36 is consistent with the thickness of the saddle connecting plate 102; for the setting of longeron connecting seat 33, through making the upper end of longeron connecting seat 33 thin to the connection between cooperation suspension support, saddle connecting plate 102 and the longeron 101, avoid appearing the clearance after leading to being connected between suspension support and the longeron 101 because of the existence of saddle connecting plate 102, and influence the stability of connection.
The connecting holes covered by the reinforcing ribs 32 on the longitudinal beam connecting seat 33 are blind holes, and the rest holes are through holes. The connecting holes 35 covered by the reinforcing ribs 32 on the longitudinal beam connecting seat 33 are designed to be blind holes instead of through holes, so that the structure of the reinforcing ribs 32 is prevented from being influenced by processing the through holes on the basis of ensuring connection, and the strength of the whole structure is ensured.
At the lower end of the suspension bracket body 31, there is a straight push rod connection unit including a pair of straight push rod connection seats 37 at the lower position of the suspension bracket body 31, a gap is left between the two straight push rod connection seats 37, so that the lower end of the suspension bracket body 31 has an arc-shaped through slot 39, and a straight push rod installation through hole 38 which accommodates the installation of the straight push rod and is horizontally arranged is provided on the straight push rod connection seats 37.
The straight push rod connecting seat 37 is waist-shaped. For the design of the straight push rod connecting seat 37, a waist-shaped structure is adopted, so that the straight push rod connecting seat 37 has a large allowance, and the straight push rod mounting through hole 38 is convenient to process.
The suspension bracket is only required to be connected with the longitudinal beam and the straight push rod, so that the load of connection of the suspension bracket is reduced, the suspension bracket can be thinned to reduce the weight of the suspension bracket, in addition, the U-shaped groove is formed at the upper end, the weight of the whole suspension bracket is further reduced, and meanwhile, the suspension bracket is additionally provided with the reinforcing rib which extends downwards from top to bottom to ensure the structural strength of the suspension bracket.
The suspension bracket 109 is connected with the bracket arm 105 through a straight push rod 110.
Two pairs of shock absorbers 111 are respectively provided at both ends of the suspension bracket 109, the upper ends of the shock absorbers 111 are fixed to the side members 101, and the lower ends thereof are fitted into the shock absorber fitting holes 19 of the bracket 105.
A pair of connecting liners disposed within stringers 101, as best seen in use in figures 12-14, the connecting liners comprise
The upper lining board 41 and the lower lining board 42 are positioned at the upper end and the lower end of the inner wall of the longitudinal beam 101, and the upper lining board 41 and the lower lining board 42 have similar structures.
The lining board 41 is specifically described as an example:
the upper lining board 41 is an L-shaped structure formed by a vertically arranged connecting section 44 and a horizontally arranged attaching section 43, wherein the connecting section 44 is provided with a plurality of connecting holes A46 corresponding to the fixing holes of the longitudinal beams 103, and the upper end of the attaching section 43 is attached to the upper end of the inner wall of the longitudinal beam.
The lower end of the upper lining plate 41 is provided with an expansion section 45 extending towards the center direction of the longitudinal beam 10, the expansion section 45 is positioned at the joint of the transverse beam 103 and the longitudinal beam 101, the length of the expansion section 45 corresponds to the transverse beam 103, the length of the expansion section 45 is controlled to be in a size corresponding to the transverse beam, the expansion section 45 is prevented from being too long to increase the weight of the lining plate, a foundation is provided for the subsequent weight reduction of the air suspension, and a plurality of connecting holes B47 corresponding to the mounting holes of the transverse beam 103 are formed in the expansion section 45.
The two ends of the expansion section 45 and the upper lining board 41 adopt arc transition. The arc transition mode is adopted between the expansion section and the upper lining plate 41, so that the structure of the joint of the expansion section and the upper lining plate 41 is more stable, and bending is avoided.
Through add an expansion section 45 corresponding to crossbeam length on at least one of last welt 41, lower welt 42, open simultaneously on expansion section 45 have the connecting hole corresponding with the crossbeam, like this to not unidimensional crossbeam, install on last welt, lower welt when its during installation, crossbeam size is big, one side can install on the expansion section in the size hour, if the size of crossbeam is undersize moreover, still can add the expansion section on with last, lower welt, just so need not to process a plurality of welts of different specifications and change, convenience very, application scope is wide.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. An improved generation air suspension, its characterized in that: comprising
Symmetrically arranged longitudinal beams are symmetrically arranged, and a plurality of connecting holes are formed in the longitudinal beams;
the beam comprises a beam main body, the beam main body is formed by integrally casting a beam pipe body and a pair of longitudinal beam connecting flanges symmetrically arranged at two ends of the beam pipe body, meanwhile, a V-shaped pushing seat group is integrally cast on the outer wall of the beam pipe body, the beam pipe body is of a tubular structure with two open ends, and meanwhile, two ends of the beam pipe body in the long axis direction are provided with an air inlet and an air outlet which are communicated with the inner cavity of the beam pipe body, and the inner wall of the beam pipe body is also provided with a reinforcing convex rib group; the sealing end covers are arranged at the two ends of the cross beam pipe body in the long axis direction, the cross sections of the sealing end covers are T-shaped, one end with a small caliber of the sealing end cover extends into the cavity of the cross beam pipe body and is fixedly connected with the cross beam pipe body through bolts, and a sealing ring group which is attached to the inner wall of the cross beam pipe body is further arranged on the outer wall of one section of the sealing end cover extending into the cavity of the cross beam pipe body;
the two ends of the axle are supported and fixed by the bracket arms, the bracket arms comprise a bracket arm main body, the upper end surface of the bracket arm main body is provided with an axle supporting panel which protrudes upwards, and the axle supporting panel is provided with four axle fixing holes which are distributed in a rectangular shape; the air bag connecting panels are connected with the two ends of the bracket arm main body and are connected with the bracket arm main body through an arc-shaped connecting section which is bent downwards, so that the height of the air bag connecting panels is not higher than that of the bracket arm main body, and a positioning mounting hole is formed in the middle of the air bag connecting panels; the straight push rod connecting unit comprises a pair of straight push rod connecting seats arranged at two sides of the lower end of the supporting arm main body, and a straight push rod mounting through hole which is used for accommodating the installation of the straight push rod and is horizontally arranged is formed at the lower end of the straight push rod connecting seats; the shock absorber connecting unit comprises a shock absorber mounting hole which is arranged at the upper end of one of the arc-shaped connecting sections and is horizontally arranged, and the shock absorber mounting hole is positioned at one end close to the bracket arm main body; the stabilizer bar connecting unit comprises a semicircular stabilizer bar mounting through groove which is arranged at the lower end of the other arc-shaped connecting section and is horizontally arranged, the stabilizer bar mounting through groove is positioned at one end close to the bracket arm main body, the axis of the stabilizer bar mounting through groove is parallel to the axis of the shock absorber mounting hole, and the axis of the stabilizer bar mounting through groove is perpendicular to the axis of the straight push rod mounting through hole; a transverse stabilizer bar is respectively connected between the outer ends of the supporting arms, and two ends of the transverse stabilizer bar are fixed on the longitudinal beam through vertical connecting rods;
four pairs of air bags respectively arranged on the air bag connecting panel, the upper ends of the air bags are fixed with the bottom ends of the longitudinal beams, and the lower ends of the air bags are arranged on the air bag connecting panel;
the suspension bracket comprises a suspension bracket main body which is Y-shaped, and a pair of reinforcing ribs which extend from the upper end of the suspension bracket main body to the lower end of the suspension bracket main body are arranged on the suspension bracket main body; the upper end of the suspension bracket main body is provided with a longitudinal beam connecting unit, the longitudinal beam connecting unit comprises a longitudinal beam connecting seat positioned at the upper part of the suspension bracket main body, the middle part of the upper end of the longitudinal beam connecting seat is provided with a U-shaped groove, the longitudinal beam connecting seat is provided with a plurality of connecting holes which are in one-to-one correspondence with the longitudinal beams, the wall thickness of the connecting part of the longitudinal beam connecting seat and the saddle connecting plate is smaller than the wall thickness of the rest part of the longitudinal beam connecting seat, and the reduction amount of the wall thickness is consistent with the thickness of the saddle connecting plate; the lower end of the suspension bracket main body is provided with a straight push rod connecting unit, the straight push rod connecting unit comprises a pair of straight push rod connecting seats positioned at the lower part of the suspension bracket main body, a gap is reserved between the two straight push rod connecting seats, so that the lower end of the suspension bracket main body is provided with an arc through slot, the straight push rod connecting seats are provided with straight push rod mounting through holes which are used for accommodating the straight push rods and are horizontally arranged, and the suspension bracket is connected with the supporting arms through the straight push rods;
the two pairs of shock absorbers are respectively arranged at the two ends of the suspension bracket, the upper ends of the shock absorbers are fixed with the longitudinal beam, and the lower ends of the shock absorbers are arranged in shock absorber mounting holes of the bracket arms;
the connecting lining plates are arranged in the longitudinal beams, the lining plates comprise a pair of upper lining plates and a pair of lower lining plates which are positioned at the upper end and the lower end of the inner wall of the longitudinal beams, the upper lining plates and the lower lining plates are similar in structure, the upper lining plates and the lower lining plates are of an L-shaped structure formed by a connecting section which is vertically arranged and a bonding section which is horizontally arranged together, a plurality of connecting holes A corresponding to the fixing holes of the longitudinal beams are formed in the connecting section, and the bonding section is bonded with the upper end or the lower end of the inner wall of the longitudinal beams; at least one of the upper lining plate and the lower lining plate is provided with an expansion section extending towards the center direction of the longitudinal beam, the expansion section is positioned at the joint of the cross beam and the longitudinal beam, the length of the expansion section corresponds to the cross beam, and the expansion section is provided with a plurality of connecting holes B corresponding to the mounting holes of the cross beam.
2. An improved air suspension as claimed in claim 1 wherein: the V-shaped pushing seat groups are divided into two groups, are symmetrically distributed at two ends of the beam tube body, each group of V-shaped pushing seat groups is formed by two V-shaped pushing seats which are symmetrically distributed at two ends of the beam tube body in the long axis direction, V-shaped pushing seats are arranged on the V-shaped pushing seats, and the other ends of the V-shaped pushing seats are fixed on an axle.
3. An improved air suspension as claimed in claim 2 wherein: the inner wall of the beam pipe body is also provided with reinforcing convex ribs, and the reinforcing convex ribs are positioned at positions corresponding to the V-shaped pushing seats on the inner wall of the beam pipe body and correspond to the V-shaped pushing seats one by one; the thickness of the V-shaped pushing seat accounts for 1/3-1/2 of the diameter of the beam pipe body.
4. An improved air suspension as claimed in claim 2 wherein: the sealing ring group is composed of two parallel O-shaped sealing rings, and an annular groove for embedding the O-shaped sealing rings is formed in the sealing end cover.
5. An improved air suspension as claimed in claim 1 wherein: the longitudinal beam connecting flange is provided with a blind hole for accommodating the installation of the sealing end cover, and the depth of the blind hole is more than or equal to the thickness of a section of the sealing end cover positioned outside the cross beam pipe body; a boss is further arranged on one side, connected with the longitudinal beam, of the longitudinal beam connecting flange, and the thickness of the boss is consistent with that of the lining plate.
6. An improved air suspension as claimed in claim 1 wherein: weight reducing grooves are formed in the bracket arm main body and the arc-shaped connecting section.
7. An improved air suspension as claimed in claim 1 wherein: the upper end face of the axle supporting panel is positioned in the middle of the axle fixing hole and is also provided with a pair of positioning holes.
8. An improved air suspension as claimed in claim 1 wherein: the upper end of the air bag connecting panel is additionally provided with a cushion block.
9. An improved air suspension as claimed in claim 1 wherein: the two ends of the suspension bracket main body are provided with weight reducing grooves; the straight push rod connecting seat is waist-shaped; the connecting holes covered by the reinforcing ribs on the longitudinal beam connecting seat are blind holes, and the rest holes are through holes.
10. An improved air suspension as claimed in claim 1 wherein: arc transition is adopted between the two ends of the expansion section and the upper lining plate or the lower lining plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547932.1A CN107323528B (en) | 2017-07-06 | 2017-07-06 | Improved generation air suspension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547932.1A CN107323528B (en) | 2017-07-06 | 2017-07-06 | Improved generation air suspension |
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| CN107323528A CN107323528A (en) | 2017-11-07 |
| CN107323528B true CN107323528B (en) | 2023-05-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107571700A (en) * | 2017-09-22 | 2018-01-12 | 江苏汤臣汽车零部件有限公司 | A kind of air suspension H-shaped arm |
| CN109263427A (en) * | 2018-11-13 | 2019-01-25 | 山东德泰机械制造集团有限公司 | A kind of airsuspension system |
| CN110281722B (en) * | 2019-05-09 | 2024-02-23 | 浙江盘毂动力科技有限公司 | Independent suspension system and vehicle |
| CN112937236A (en) * | 2021-02-22 | 2021-06-11 | 三一重型装备有限公司 | Arm frame assembly, oil gas suspension mechanism and engineering vehicle |
| CN113580862B (en) * | 2021-08-16 | 2022-04-05 | 山东亚中车辆股份有限公司 | Shock attenuation running gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201045008Y (en) * | 2007-06-21 | 2008-04-09 | 东风汽车有限公司 | Full-air rear suspension device of automobile |
| CN201442502U (en) * | 2009-07-29 | 2010-04-28 | 中国重汽集团济南动力有限公司 | Double rear-axle air suspension bracket |
| CN202911496U (en) * | 2012-11-16 | 2013-05-01 | 陕西重型汽车有限公司 | Air bag support of pneumatic suspension assembly of heavy-duty car |
| DE102014218735A1 (en) * | 2014-09-18 | 2016-03-24 | Zf Friedrichshafen Ag | Suspension arrangement for a vehicle with at least one liftable axle and support of such an axle |
| CN204749784U (en) * | 2015-05-26 | 2015-11-11 | 上海瑞尔实业有限公司 | Suspension system behind vehicle air spring |
| CN106004299B (en) * | 2016-06-03 | 2017-12-29 | 山东安博机械科技股份有限公司 | A kind of single drive axle air suspension assembly |
| CN206984123U (en) * | 2017-07-06 | 2018-02-09 | 江苏汤臣汽车零部件有限公司 | A kind of improved air suspension |
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