CN209987707U - Low-floor integrated module type independent suspension steering axle - Google Patents
Low-floor integrated module type independent suspension steering axle Download PDFInfo
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- CN209987707U CN209987707U CN201920490805.7U CN201920490805U CN209987707U CN 209987707 U CN209987707 U CN 209987707U CN 201920490805 U CN201920490805 U CN 201920490805U CN 209987707 U CN209987707 U CN 209987707U
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Abstract
The utility model discloses a low floor integrated module formula independent suspension steering axle, including two independent and left and right symmetrical arrangement's independent suspension device and a steering system respectively, steering system connects in independent suspension device inboard, independent suspension device include sub vehicle frame assembly, bear seat assembly, swizzle, knuckle assembly, knuckle arm, wheel hub brake disc assembly, stopper assembly, air spring assembly, shock absorber assembly and go up A type arm assembly and lower A type arm assembly; the steering system comprises a left steering tie rod assembly, a left rocker arm assembly, a middle tie rod assembly, a right rocker arm assembly and a right steering tie rod assembly; the utility model discloses not only ensured the matching precision of automobile body and independent suspension, still guaranteed suspension system and a steering system's matching precision, further guaranteed whole car four-wheel positioning parameter, avoided whole car to appear turning to not returning, tire wear scheduling problem, and the assembly is simple, reduces operating personnel's intensity of labour, practices thrift the cost.
Description
Technical Field
The utility model relates to an independent suspension system front axle assembly for car especially relates to an integrated module formula independent suspension steer axle suitable for low floor wide passageway.
Background
Along with the social development, the low floor of the urban bus is popularized, and along with the development of bus automobile technology, the full-load bus body is also popularized to the whole new energy bus field, and even part of the full-load bus body adopts an aluminum alloy structure. However, when the axle assembly of the independent suspension is matched, although the lower floor can be realized, the required installation precision is difficult to ensure, or the required installation precision can be realized only by needing higher investment cost, and the number of connecting points of the axle and the full-load vehicle body needs to be reduced as much as possible so as to improve the relative position size precision of the suspension and the steering system.
As shown in fig. 4, the existing steering system is usually located outside the independent suspension, and there are many connecting points, and the positioning accuracy needs to be improved, for example, the utility model with chinese patent No. 201020550680.1 discloses a large-drop independent suspension front axle assembly, although the arrangement of this independent suspension system can satisfy the requirement of low floor passage width, the number of connecting points between the steering axle of this independent suspension and the vehicle body is many, it is difficult to ensure the size accuracy of the relative position of the steering system and the suspension system, and the positioning parameters of the four wheels of the whole vehicle can not satisfy the design requirement, so that the vehicle is prone to have many defects such as steering failure, tire wear, etc. in the running process; or the whole car factory needs to perform four-wheel positioning correction for many times, so that the investment cost is overlarge.
The existing steering axle with the independent suspension cannot meet the space installation and technical requirements of a 5.0T bus, particularly a new energy bus, cannot meet the requirement of positioning accuracy of the new energy bus under the condition of limitation of installation space, and therefore tires are prone to wear, and the maintenance cost of the whole bus is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low floor integrated module formula independent suspension steer axle to solve current independent suspension axle and be difficult to match and bear the weight of the car body entirely, axle and the more inaccurate scheduling problem that leads to the installation accuracy of automobile body tie point, make its independent suspension steer axle that is more applicable to the new forms of energy bus.
The utility model discloses required technical problem who solves realizes through following technical scheme, a low floor integrated module formula independent suspension steer axle, this independent suspension steer axle include two independent and left and right symmetrical arrangement's independent suspension device separately and the a steering system who links to each other with independent suspension device, independent suspension device include A type arm assembly, down A type arm assembly, sub vehicle frame assembly and symmetry set up in the sub vehicle frame assembly left and right sides bear seat assembly, king pin, knuckle assembly, knuckle arm, wheel hub brake disc assembly, stopper assembly, air spring assembly, shock absorber assembly.
The bearing seat assembly is connected with the steering knuckle assembly through a main pin, the hub brake disc assembly and the brake assembly are installed on the steering knuckle assembly, the lower end of the air spring assembly is fixed at the top end of the bearing seat assembly, and the lower support point of the shock absorber assembly is installed on the bearing seat assembly.
In a preferred embodiment of the present invention, the hinge point of one end of the upper a-type arm assembly is connected to the bearing seat assembly through a pin, the other end is connected to the vehicle body through two hinge points, and the Y-direction distance between the two hinge points of the bearing seat assembly and the vehicle body is 280-320 mm.
In a preferred embodiment of the present invention, the bearing seat assembly is coupled to the upper a-shaped arm assembly and the lower a-shaped arm assembly, and the Z-direction distance H3 is 375-415 mm.
In the utility model discloses a preferred embodiment, both ends are equipped with the hookup automobile body device around the sub vehicle frame assembly, and left and right both sides are equipped with two hinge point devices of A type arm assembly under the hookup respectively, and the middle part position of two hinge points still is equipped with the connection rocking arm assembly device simultaneously, and its hookup rocking arm assembly device is 90 ~ 130mm to Z direction drop distance H1 at king pin center.
In the utility model discloses a preferred embodiment, a type arm assembly one end pin joint bears the seat assembly through the round pin hub connection down, and the other end passes through two pin joints to be connected in the left and right sides of sub vehicle frame assembly, and two pin joints of connection sub vehicle frame assembly are to the Z of swizzle center distance H2 being 180 ~ 220mm, and two pin joint center Y that the seat assembly was born in the connection and sub vehicle frame assembly are 500 ~ 540mm to distance L2.
In a preferred embodiment of the present invention, the knuckle arm is connected to the knuckle assembly, and the mounting hole for connecting the left and right tie rod assemblies to the knuckle arm and the brake assembly are respectively disposed at one side of the knuckle assembly.
As a further improvement, one end of the left rocker arm assembly and one end of the right rocker arm assembly are respectively connected with a connecting rocker arm assembly device connected on the auxiliary frame assembly through pin shafts, the other end of the left rocker arm assembly and the other end of the right rocker arm assembly are respectively connected with a knuckle arm through a left steering tie rod assembly and a right steering tie rod assembly, and connecting points at two ends of the left rocker arm assembly and the right rocker arm assembly are respectively connected with two ends of a middle tie rod assembly, so that the left rocker arm assembly, the right rocker arm assembly and the middle tie rod assembly are mutually connected to realize linkage.
The utility model discloses control sub vehicle frame assembly and lower A type arm assembly to the drop height at swizzle center, make whole vehicle chassis can arrange the low floor, satisfy the one-level requirement of marking time, and because the utility model discloses a left side, right rocking arm assembly arrange the middle part of two pin joints of A type arm one end under, A type arm assembly one end and left side, right rocking arm assembly can be integrated the assembly on sub vehicle frame assembly promptly, not only ensure the matching precision of automobile body and independent suspension, still guarantee suspension system and a steering system's matching precision, further guaranteed whole vehicle four-wheel positioning parameter, avoid whole vehicle to appear turning to not returning to the straight, tire wear scheduling problem, and assembly process is simple, reduce operating personnel's intensity of labour, practice thrift the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic side view of the structure of FIG. 1;
fig. 3 is a schematic structural view of an embodiment of the subframe assembly of the present invention;
fig. 4 is a schematic structural view of a conventional steering axle with independent suspensions.
In the figure: 1-an auxiliary frame assembly, 2-a right rocker arm assembly, 3-a right steering tie rod assembly, 4-a bearing seat assembly, 5-a hub brake disc assembly, 6-a brake assembly, 7-a main pin, 8-an upper A type arm assembly, 9-a left rocker arm assembly, 10-a steering knuckle assembly, 11-a steering knuckle arm, 12-a left steering tie rod assembly, 13-a lower A type arm assembly, 14-a middle tie rod assembly, 15-an air spring assembly, 16-a shock absorber assembly, 40-a pin shaft, 100-a connecting vehicle body device, 110-a hinge point device, 120-a connecting rocker arm assembly device and 130-a hinge point.
Detailed Description
The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
It should be noted that the terms "two sides", "inside", "one side", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the designated parts or portions must have a specific orientation and be configured in a specific orientation, and thus, should not be construed as limiting the present invention.
It should also be noted that, unless expressly stated or limited otherwise, the terms "coupled" and "connected" are to be construed broadly, as they may be non-removable/movable and removable/movable, for example; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.
In the embodiment shown in fig. 1-3, the low-floor integrated modular independent suspension steering axle comprises two independent suspension devices which are respectively arranged independently and symmetrically left and right, and a steering system, wherein the steering system is connected to the left and right independent suspension devices, and the steering system is positioned at the inner side of the left and right independent suspension devices, so that the installation space of the whole steering axle is greatly reduced.
Further, the independent suspension device comprises an upper A-type arm assembly 8, a lower A-type arm assembly 13, a sub-frame assembly 1, and a bearing seat assembly 4, a main pin 7, a knuckle assembly 10, a knuckle arm 11, a hub brake disc assembly 5, a brake assembly 6, an air spring assembly 15 and a damper assembly 16 which are symmetrically arranged on two sides of the sub-frame assembly 1.
Further, the steering system comprises a left steering tie rod assembly 12, a left rocker arm assembly 9, a middle tie rod assembly 14, a right rocker arm assembly 2 and a right steering tie rod assembly 3.
Furthermore, the bearing seat assembly 4 is connected with the steering knuckle assembly 10 through a main pin 7, the hub brake disc assembly 5 and the brake assembly 6 are installed on the steering knuckle assembly 10, so that the running and braking functions of the automobile are realized, the lower end of the air spring assembly 15 is fixed at the top end of the bearing seat assembly 4, the other end of the air spring assembly is connected to the automobile body, so that the bearing function of the automobile is realized, the lower support point of the shock absorber assembly 16 is installed on the bearing seat assembly 4, and the other end of the shock absorber assembly is connected to the automobile body, so that the shock absorbing function of the automobile is realized.
In a preferred embodiment of the present invention, the hinge point of one end of the upper a-shaped arm assembly 8 is connected to the bearing seat assembly 4 through the pin 40, the other end is connected to the vehicle body through two hinge points, and the Y-direction distance between the two hinge points of the bearing seat assembly 4 and the vehicle body is 280-320 mm.
In a preferred embodiment of the present invention, the two hinge point centers Z of the upper a-shaped arm assembly 8 and the lower a-shaped arm assembly 13 connected to the bearing seat assembly 4 are spaced from the distance H3 to 375-415 mm, so that the bearing seat assembly 4 can flexibly rotate around the pin shaft 40, thereby realizing the upper and lower jumping functions of the automobile wheel.
As a further improvement, the Z-direction distance H3 between the centers of the two hinge points of the bearing seat assembly 4 connecting the upper A-shaped arm assembly and the lower A-shaped arm assembly is equal to 375mm, 395mm or 415 mm.
As a further improvement, the front end and the rear end of the subframe assembly 1 are provided with a vehicle body connecting device 100, the left side and the right side are respectively provided with two hinge point devices 110 for connecting the lower a-type arm assembly 13, and a connecting rocker arm assembly device 120 is further arranged between the two hinge points 130, and the fall distance H1 from the connecting part of the connecting rocker arm assembly device 120 to the center of the kingpin is 90-130 mm.
As a further improvement, the drop height of the auxiliary frame assembly 1 connected with the connecting rocker arm assembly device 120 to the center of the main pin is 90mm, 110mm or 130mm in an example H1.
In a preferred embodiment of the present invention, the lower a-type arm assembly 13 has one end connected to the bearing seat assembly 4 through the pin shaft 40, and the other end connected to the left and right sides of the sub-frame assembly 1 through the two hinge points 130, the Z-direction distance H2 from the two hinge points 130 of the sub-frame assembly 1 to the center of the main pin 7 is 180-220 mm, and the Y-direction distance L2 from the two hinge points of the bearing seat assembly 4 and the sub-frame assembly 1 is 500-540 mm.
As a further improvement, the Z-direction distance H2 from the two hinge points 130 of the auxiliary frame assembly 1 to the center of the main pin 7 is 180mm, 190mm, 200mm or 220mm, and the Y-direction distance L2 from the two hinge points of the bearing seat assembly 4 and the auxiliary frame assembly 1 is 500mm, 520mm or 540 mm.
In a preferred embodiment of the present invention, the knuckle arm 11 is connected to the knuckle assembly 10, and the mounting holes of the knuckle arm 11 for connecting the left and right tie rod assemblies 12 and 3 and the brake assembly 6 are respectively disposed at one side of the knuckle assembly 10.
In a preferred embodiment of the present invention, one end of the left rocker arm assembly 9 and one end of the right rocker arm assembly 2 are respectively coupled to the coupling rocker arm assembly device 120 of the sub-frame assembly 1 through the pin, the other end of the left rocker arm assembly 9 and the other end of the right rocker arm assembly 2 are respectively coupled to the knuckle arms 11 of the same side through the left tie rod assembly 12 and the right tie rod assembly 3, and the left rocker arm assembly 9 and the right rocker arm assembly 2 are further coupled to each other through the middle tie rod assembly 14, so as to achieve the car steering function.
As a further improvement, the left and right rocker arm assemblies 9, 2 are correspondingly arranged at the inner sides of the lower a-shaped arm assemblies 13 at both sides, so that the left and right rocker arm assemblies 9, 2 and the left and right tie rod assemblies 12, 3 rotate at the inner sides of the lower a-shaped arm assemblies 13, and the overall size is greatly reduced under the condition of not influencing steering.
The utility model discloses analysis and verification are carried out from the angle of kinematics and dynamics to survey the influence of above embodiment to the vehicle location from positioning parameters such as toe-in angle, camber angle, king pin inclination, king pin caster angle.
In the above embodiments, the vehicle positioning test is performed according to the size ranges described in H1, H2, H3, L1, and L2, and when any size value in the above size ranges is selected and the left and right wheels simultaneously run out ± 50mm, the change of the wheel positioning angle and ackermann correction rate are examined:
the variation range of the toe-in angle is-0.38-0.81 degrees, wherein the toe-in angle varies from 0 degree to-0.38 degrees along with the upward jump of the wheel by 50 mm; and has a negative toe-in trend along with the wheel jumping up;
the change range of the camber angle is-0.26-0.75 degrees, wherein the camber angle changes from 0.5 degrees to-0.26 degrees along with the upward jump of the wheel by 50 mm; and has a negative camber trend along with the wheel jumping upwards;
the variation range of the inner inclination angle of the kingpin is-8.2-9.3 degrees, wherein the variation of the inner inclination angle of the kingpin is opposite to that of the camber angle in the process of jumping up and down by 50mm along with the wheel, but the variation ranges are the same;
the variation range of the caster angle of the kingpin along with the wheel runout is very small and almost does not change;
the ackermann correction rates are all greater than 60% in the range of the wheel rotation angle of 10 ° to 20 °, and the correction rates have a tendency to increase gradually with the increase in the wheel rotation angle.
Through the tests, the size range of the components can meet the requirement of space limitation, and the wheel positioning angle is within the range of design requirements and has reasonable variation trend.
By adopting the structure, compared with the large-drop independent suspension front axle assembly disclosed by the Chinese patent application No. 201020550680.1, the low-floor integrated modular independent suspension steering axle of the utility model controls the drop height from the auxiliary frame assembly 1 and the lower A-shaped arm assembly 13 to the center of the main pin, so that the whole chassis can be arranged with a low floor to meet the requirement of one-level stepping, and because the left rocker arm assembly 9 and the right rocker arm assembly 2 of the utility model are respectively arranged at the middle part of two hinge points 130 at one end of the lower A-shaped arm assembly 13, namely one end of the lower A-shaped arm assembly 13, the left rocker arm assembly 9 and the right rocker arm assembly 2 can be integrally assembled on the auxiliary frame assembly 1, the matching precision of the automobile body and the independent suspension is ensured, the matching precision of the suspension system and the steering system is also ensured, the four-wheel positioning parameters of the whole automobile are further ensured, the problems of non-return steering, tire abrasion and the, and the assembly process is simple, the labor intensity of operators is reduced, and the cost is saved.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, but only by the description of the above embodiments and the description, without departing from the spirit and scope of the present invention, the present invention can also have various changes and modifications, and these changes and modifications all fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The steering axle is characterized in that the steering system is positioned on the inner sides of the left independent suspension device and the right independent suspension device, the independent suspension device comprises an upper A-type arm assembly (8), a lower A-type arm assembly (13), a subframe assembly (1) and bearing seat assemblies (4), a main pin (7), a steering knuckle assembly (10), a steering knuckle arm (11), a hub brake disc assembly (5), a brake assembly (6), an air spring assembly (15) and a shock absorber assembly (16) which are symmetrically arranged on the left side and the right side of the subframe assembly (1), the bearing seat assemblies (4) are connected with the steering knuckle assembly (10) through the main pin (7), and the hub brake disc assembly (5), The brake assembly (6) is arranged on the steering knuckle assembly (10), the lower end of the air spring assembly (15) is fixed at the top end of the bearing seat assembly (4), and the lower support point of the shock absorber assembly (16) is arranged on the bearing seat assembly (4);
the upper A-shaped arm assembly (8) is connected with the bearing seat assembly (4) and the Y-direction distance L1 between the centers of two hinge points of the vehicle body and is 280-320 mm;
the drop height distance H1 between the auxiliary frame assembly (1) and the rocker arm assembly device (120) and the center of the main pin (7) is 90-130 mm.
2. The low-floor integrated modular independent suspension steer axle of claim 1, wherein said upper a-arm assembly (8) is connected to the carrier assembly (4) at one end of the hinge point by a pin (40) and to the vehicle body at the other end by two hinge points, and the Y-direction distance L1 between the two hinge points connecting the carrier assembly (4) and the vehicle body is 300 mm.
3. The low-floor integrated modular independent suspension steer axle of claim 1, wherein the bearing block assembly (4) is coupled to the upper and lower a-arm assemblies (8, 13) at a Z-distance H3-375-415 mm.
4. A low-floor integrated modular independent suspension steer axle of claim 3 wherein said load carrier assembly (4) is connected to the upper (8) and lower (13) a-arm assemblies at a Z-distance H3 mm.
5. The steering axle with the low floor integrated modular independent suspension is characterized in that a vehicle body connecting device (100) is arranged at the front end and the rear end of the auxiliary frame assembly (1), two hinge point devices (110) for connecting the lower A-type arm assembly (13) are respectively arranged at the left side and the right side, a rocker arm assembly device (120) is arranged between the two hinge point devices (110), and the drop distance H1 from the rocker arm assembly device (120) to the center of the main pin (7) is 110 mm.
6. The low-floor integrated modular independent suspension steering axle of claim 1, characterized in that the lower a-arm assembly (13) is connected to the bearing seat assembly (4) through a pin (40) at one end of the hinge point, and connected to the two sides of the sub-frame assembly through two hinge points (130) at the other end of the hinge point, the Z-direction distance H2 from the two hinge points (130) connecting the sub-frame assembly (1) to the center of the main pin is 180-220 mm, and the Y-direction distance L2 from the two hinge points connecting the bearing seat assembly (4) and the sub-frame assembly (1) is 500-540 mm.
7. The low floor integrated modular independent suspension steer axle of claim 6 wherein said lower a-arm assembly couples the two hinge points of the subframe assembly to the center of the kingpin by a Z-distance H2 of 200 mm.
8. The low floor integrated modular independent suspension steer axle of claim 6 wherein said lower A-arm assembly is coupled to said carrier assembly and said subframe assembly at a hinge point center Y-distance L2 of 520 mm.
9. The low floor integrated module type independent suspension steering axle according to claim 1, wherein the knuckle arm (11) is connected to the knuckle assembly (10), and the mounting holes of the knuckle arm (11) to which the left and right tie rod assemblies (12, 3) are connected and the brake assembly (6) are provided at one side of the knuckle assembly (10), respectively.
10. The low floor integrated modular independent suspension steer axle of any of claims 1-9, wherein said steering system comprises a left track rod assembly (12), a left rocker arm assembly (9), a middle track rod assembly (14), a right rocker arm assembly (2), a right track rod assembly (3); one end of the left rocker arm assembly (9) and one end of the right rocker arm assembly (2) are respectively connected to a connecting rocker arm assembly device (120) arranged on the auxiliary frame assembly (1) through pin shafts, the other ends of the left rocker arm assembly and the right rocker arm assembly are respectively connected with the knuckle arms (11) on the same side through a left steering tie rod assembly (12) and a right steering tie rod assembly (3), and connecting points at two ends of the left rocker arm assembly (9) and the right rocker arm assembly (2) are respectively connected with two ends of a middle tie rod assembly (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920490805.7U CN209987707U (en) | 2019-04-12 | 2019-04-12 | Low-floor integrated module type independent suspension steering axle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920490805.7U CN209987707U (en) | 2019-04-12 | 2019-04-12 | Low-floor integrated module type independent suspension steering axle |
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| Publication Number | Publication Date |
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| CN209987707U true CN209987707U (en) | 2020-01-24 |
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| CN201920490805.7U Active CN209987707U (en) | 2019-04-12 | 2019-04-12 | Low-floor integrated module type independent suspension steering axle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023039928A1 (en) * | 2021-09-16 | 2023-03-23 | 浙江飞碟汽车制造有限公司 | Tricar chassis device |
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2019
- 2019-04-12 CN CN201920490805.7U patent/CN209987707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023039928A1 (en) * | 2021-09-16 | 2023-03-23 | 浙江飞碟汽车制造有限公司 | Tricar chassis device |
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