CN109986921B - Flexible shock attenuation vehicle chassis structure - Google Patents
Flexible shock attenuation vehicle chassis structure Download PDFInfo
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- CN109986921B CN109986921B CN201910343383.5A CN201910343383A CN109986921B CN 109986921 B CN109986921 B CN 109986921B CN 201910343383 A CN201910343383 A CN 201910343383A CN 109986921 B CN109986921 B CN 109986921B
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- swing arm
- central
- rear axle
- chassis structure
- bush
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- 230000035939 shock Effects 0.000 title claims abstract description 25
- 239000003381 stabilizer Substances 0.000 claims abstract description 39
- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 241000425571 Trepanes Species 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 229920001971 elastomer Polymers 0.000 description 9
- 230000009467 reduction Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
-
- 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
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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
- B60G2202/12—Wound spring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a flexible damping automobile chassis structure, which comprises a rear axle, a transverse swing arm and a hanging device, wherein the rear axle is connected with the transverse swing arm; the center of the rear axle is connected with a longitudinal thrust pipe in the forward direction, the upper part of the longitudinal thrust pipe is provided with a transverse swing arm, the transverse swing arm comprises a left pull rod, a right pull rod and a central swing arm, the lower end of the central swing arm is connected with the longitudinal thrust pipe through a pin shaft, and the upper end of the central swing arm is connected to the frame; both ends of the rear axle are provided with hubs, shock absorbers and helical springs; the upper end ring of the spiral spring is connected with the frame through a connecting piece; the stabilizer bar is arranged between the connecting pieces, a hanging device is arranged on the stabilizer bar, and a mounting seat is arranged on the hanging device so that the hanging device is connected with the frame. The transverse swing arm device and the hanging device can effectively reduce the vertical swing and the transverse swing of the automobile chassis in the running process, increase the flexibility and the riding comfort of the automobile chassis, and increase the stability and the safety of the automobile in the running process.
Description
Technical Field
The invention belongs to the technical field of chassis structures of automobiles, and particularly relates to a flexible damping automobile chassis structure.
Background
The car is in the high-speed development simultaneously, the family car no longer is luxurious article, and when as the instrument of riding instead of walk, people also more and more pay close attention to the security and the travelling comfort of family car, safety is the basis, the comfort is the pursuit, the importance of travelling comfort to a family car is self-evident, and the travelling comfort mainly reflects on the chassis suspension timing to the car, think of the name suspension is exactly the support of chassis, the dynamics that the tire fed back from the road surface all passes through the suspension processing and conveys to the driver, divide into independent suspension and dependent suspension at present, the travelling comfort of independent suspension is superior to dependent suspension, dependent suspension is called the wooden handcart suspension again.
In the prior art, the following flexible damping technical schemes are adopted:
chinese patent application 201710591325.5 discloses a flexible damping device, suitable for use in a flexible damping device, for connecting with shafts of two different machines and absorbing torque, so that the two different machines are coaxial in the transmission process, characterized in that a flexible damping plate is sandwiched between the two different machines and tightly attached to the two different machines, and the flexible damping plate is radially arranged on a first plane; the first plane is a plane formed by an X axis and a Y axis in a Cartesian coordinate system. When the flexible damping plate is installed on a vehicle, the vehicle can absorb large instantaneous external force impact on wheels in the running process of the vehicle, the impact of the external force on structures such as a steering motor and a large second gear in a gear box is reduced, and the parts are protected.
Chinese patent application 201820684039.3 discloses a flexible shock attenuation turns to device, casing, pinion and reduction gear lower casing on motor, reduction gear, install the motor below the casing on the reduction gear, install casing below on the reduction gear the pinion, install the pinion below the pinion the casing under the reduction gear, the casing is installed and is turned to first gear shaft on the reduction gear, turn to first gear shaft below and install flexible snubber block, flexible snubber block below is installed and is turned to lower semi-axis, turn to lower semi-axis and install on reduction gear lower casing, the wheel mount pad is installed to reduction gear lower casing below, the wheel is installed to wheel mount pad one side. Has the advantages that: the shock absorber can buffer the transient impact load of the outside on the wheel rotating mechanism, and when the impact load disappears, the rotating mechanism can quickly recover the self steering function.
However, the flexible damping device in the prior art is used in an automobile chassis, has technical reasons of complex structure, difficult installation and the like, cannot effectively reduce the transverse swinging of an automobile body caused by the up-and-down swinging of wheels of an automobile in the driving process, cannot fundamentally solve the up-and-down swinging problem of the automobile due to the arrangement of the flexible clamping plate, is an easily worn part, has short service life and needs to be replaced in time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a flexible shock-absorbing automobile chassis structure, which solves the technical reasons of complex structure, difficult installation and the like in the prior art, and can effectively reduce the transverse swing of an automobile body caused by the vertical swing of wheels in the driving process of an automobile.
The invention provides the following technical scheme:
a flexible shock-absorbing automobile chassis structure comprises a rear axle, a transverse swing arm and a hanging device; the rear axle is characterized in that the center of the rear axle is connected with a longitudinal thrust pipe in the forward direction, the upper part of the longitudinal thrust pipe at the joint is provided with a transverse swing arm, the transverse swing arm comprises a left pull rod, a right pull rod and a central swing arm, the central swing arm is connected with a central bushing, the lower end of the central swing arm is connected with the longitudinal thrust pipe, and the upper end of the central swing arm is connected to a frame; the rear axle is characterized in that hubs, shock absorbers and spiral springs are arranged at two ends of the rear axle, the upper ends of the spiral springs are connected with the frame through L-shaped connecting pieces, stabilizer bars are arranged between the L-shaped connecting pieces, the stabilizer bars are bent backwards and connected with the bushing fixing blocks and the connecting bushings through pin shafts, and hanging devices are arranged on the stabilizer bars. The hanging device comprises a hanging bush, a small sleeve, a hanging rod and a mounting seat; the hanging device is connected with the frame through the mounting seat.
Preferably, the central rocker arm is connected with the central bushing through a bolt.
Preferably, the lower end of the central rocker arm is connected with a longitudinal thrust pipe through a pin shaft.
Preferably, the ends of the left transverse swing arm and the right transverse swing arm far away from the central swing arm are connected with the frame through trepanning of the concave mounting piece.
Preferably, the hubs, the shock absorbers and the coil springs arranged at the two ends of the rear axle are symmetrical and occur in pairs.
Preferably, one end of the pull rod is connected with the central rocker arm, the central bushing is clamped by a vertical plate of the central rocker arm, and the central bushing is connected with the central rocker arm through the bolt and the nut.
Preferably, the transverse swing arm comprises a mounting part and an inner sleeve; the pull rod is provided with an inner sleeve pipe at the end far away from the central rocker arm, the inner sleeve pipe is connected with the mounting part through a pin shaft, the lower end of the central rocker arm is connected with the rear axle through a pin shaft, and the upper end of the central rocker arm is connected with the frame.
Preferably, the rear axle both ends are connected with the bumper shock absorber with coil spring, and the coil spring upper end is passed through "L" type connecting piece is connected on the frame, connect through the stabilizer bar between two connecting pieces, the stabilizer bar is buckled backward and is passed through the round pin hub connection with bush fixed block and connecting bush, is provided with cable suspension device on the stabilizer bar.
Preferably, the number of the hanging means is two.
Preferably, the hanging device comprises a mounting seat with a flat hole mounted on the frame, a small sleeve fixed by a pin is connected below the mounting seat through a hanging rod, the bottom end of the small sleeve is provided with the hanging bush, and the stabilizer bar penetrates through the hanging bush.
Preferably, the stabilizer bar, the suspension bushing and the connecting bushing have center lines parallel to the rear axle.
Preferably, the rear axle is provided with a mounting pin shaft of a shock absorber and a spiral spring.
Preferably, the spiral spring is a compression spring made of spring steel; the section of the wire is circular, the wire diameter D1 is 5.8-21.5mm, the thread pitch D is 9.5-25mm, and the length L is 80-280 mm. Further, the wire diameter d1 and the length L satisfy d1 · L, 580 is not less than 5950. When d1 & L is less than 580, the energy storage and shock absorption provided by the spiral elasticity are insufficient; when d1 · L is greater than 5950, the coil spring is too stiff and not comfortable, and is not conducive to shock absorption at light loads.
Preferably, in order to improve the flexibility, the bearing capacity and the comfort of the automobile chassis structure, the cross section of the compression spring is circular, and the wire diameter D1, the screw pitch D and the length L of the compression spring satisfy the following relations:
d1＝α·(L/D)；
wherein α is the wire diameter coefficient of the spring, and the value range is 0.35-6.42.
Preferably, the connecting bushing is made of rubber, preferably natural rubber, neoprene, nitrile rubber or ethylene propylene rubber, so as to buffer the impact generated by the chassis of the automobile when the chassis of the automobile is subjected to vibration. The Shore hardness Y of the rubber connecting bushing is 20-90, and the rebound rate kappa is 20-80%; furthermore, the shore hardness Y and the resilience k of the connecting bushing satisfy the condition that k is delta-Y1/2Wherein, the delta is the coefficient of resilience rate and the value range is 0.04 to 0.16.
Preferably, in order to achieve better cooperation between the coil spring and the rubber connecting bush to improve the flexibility, the bearing capacity and the comfort of the automobile chassis structure, the shore hardness Y and the rebound rate k of the connecting bush and the wire diameter D1, the pitch D and the length L of the spring satisfy the following relations:
wherein the content of the first and second substances,
the value range is 0.25-32.6 for adjusting the coefficient.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the flexible shock-absorbing automobile chassis structure, the stabilizer bar is connected through the L-shaped connecting piece and the connecting bushing, the stabilizer bar is bent backwards and is connected with the bushing fixing block and the connecting bushing through the pin shaft, the two spiral springs at two ends of the rear axle are effectively connected together, and when a wheel at one side swings up and down, the size of the swing amplitude of the up-down and left-right can be effectively relieved by driving the spiral spring at the other side.
(2) According to the flexible damping automobile chassis structure, the L-shaped connecting sheet and the stabilizer bar are connected through the connecting bushing, so that the stabilizer bar can swing up and down, the rigidity of the stabilizer bar is increased, and the left-right swing amplitude of an automobile is reduced.
(3) According to the flexible shock-absorbing automobile chassis structure, the upper side and the lower side of the central rocker arm are respectively connected to the rear axle and the frame, the two ends of the pull rod are connected to the frame, different from a transverse independent pull rod in the prior art, the two ends of the pull rod are provided with the increased moment, the acting force dispersed to the other end of the pull rod is reduced, the acting force is dispersed, the up-and-down swinging amplitude of an automobile in running is effectively reduced, and the shock-absorbing flexibility of the chassis is increased.
(4) According to the flexible shock-absorbing automobile chassis structure, the central rocker arm and the pull rod are connected through the bushing, so that the mobility of the flexible shock-absorbing automobile chassis structure is increased, the flexible shock-absorbing automobile chassis structure is convenient to operate in a specific use process, the service life of the flexible shock-absorbing automobile chassis structure is effectively prolonged, and the flexible shock-absorbing automobile chassis structure can be conveniently detached and replaced.
(5) According to the flexible shock-absorbing automobile chassis structure, the flexibility and riding comfort of the automobile chassis are improved and the stability and safety of an automobile in the driving process are improved by setting the material, the wire diameter, the screw pitch and the range and the parameters of the length of the spiral spring.
(6) According to the flexible shock-absorbing automobile chassis structure, the hardness and the rebound rate of the rubber connecting bushing and the relationship among the wire diameter D1, the screw pitch D and the length L of the spring are set, so that a better synergistic effect is achieved between the spiral spring and the rubber connecting bushing, and the flexibility, the bearing capacity and the comfort of the automobile chassis structure are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the hanger of the present invention.
Fig. 3 is a schematic view of the swing arm and pull rod of the present invention.
In the figure: 1. a rear axle; 2. a longitudinal thrust tube; 3. a transverse swing arm; 301. a pull rod; 302. a center bushing; 303. a central rocker arm; 304. a bolt; 305. an inner sleeve; 306. a mounting member; 307. trepanning; 4. a hub; 5. a shock absorber; 6. a threaded spring; 7. a connecting member; 8. a stabilizer bar; 9. a hanging device; 901. hanging the lining; 902. a small sleeve; 903. a boom; 904. a mounting seat; 10. a bushing fixing block; 11. and connecting the bushing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
Referring to fig. 1-3, a flexible damping chassis structure for an automobile includes a rear axle 1, a transverse swing arm 3, and a suspension device 9; the rear axle is characterized in that the center of the rear axle 1 is connected with a longitudinal thrust pipe 2 in the forward direction, the upper part of the longitudinal thrust pipe 2 at the connection position is provided with a transverse swing arm 3, the transverse swing arm 3 comprises a left pull rod 301 and a right pull rod 301 and a central swing arm 303, the central swing arm 303 is connected with a central bushing 302 through a bolt 304, the lower end of the central swing arm 303 is connected with the longitudinal thrust pipe 2 through a pin shaft, and the upper end of the central swing arm 303 is connected with a frame; the rear axle comprises a rear axle 1 and is characterized in that both ends of the rear axle 1 are provided with hubs 4, a shock absorber 5 and a spiral spring 6, the upper end of the spiral spring 6 is connected with a frame through an L-shaped connecting piece 7, a stabilizer bar 8 is arranged between the L-shaped connecting pieces 7, the stabilizer bar 8 is bent backwards and connected with a bush fixing block 10 and a connecting bush 11 through a pin shaft, and a hanging device 9 is arranged on the stabilizer bar 8; the hanging device 9 comprises a hanging bush 901, a small sleeve 902, a hanging rod 903 and a mounting seat 904; the mounting 904 connects the hanger 9 to the frame.
Preferably, the wheel hubs 4, the shock absorbers 5 and the coil springs 6 arranged at both ends of the rear axle are symmetrical and paired.
The lower end of the central rocker arm 303 is connected to the upper part of the longitudinal thrust rod through a pin shaft, the lower end of the central rocker arm 303 is connected to a vehicle frame, and the ends, far away from the central rocker arm 303, of the left transverse swing arm and the right transverse swing arm are connected to the vehicle frame through sleeve holes 307 of the concave mounting piece 306.
One end of the pull rod 301 is connected to the central rocker arm 303, the central bushing 302 is clamped by a vertical plate of the central rocker arm 303, the central bushing 302 is connected to the central rocker arm 303 through the bolt 304, and the nut is fixed.
The transverse swing arm 3 comprises a mounting 306 and an inner sleeve (305); an inner sleeve 305 is arranged at the end, far away from the central rocker arm 303, of the pull rod 301, the inner sleeve 305 is connected with the mounting part 306 through a pin shaft, the lower end of the central rocker arm 303 is connected with the rear axle 1 through a pin shaft, and the upper end of the central rocker arm 303 is connected with a vehicle frame.
The rear axle is characterized in that the two ends of the rear axle 1 are connected with the shock absorbers 5 and the spiral springs 6, the upper ends of the spiral springs 6 are connected to the frame through L-shaped connecting pieces 7, the two connecting pieces 7 are connected through stabilizer bars 8, the stabilizer bars 8 are bent backwards and connected with a bush fixing block 10 and a connecting bush 11 through pin shafts, and two hanging devices 9 are arranged on the stabilizer bars 8.
The hanging device 9 comprises a flat plate hole mounting seat 904 mounted on the frame, a small sleeve 902 fixed by a pin shaft is connected below the mounting seat 904 through a hanging rod 903, the bottom end of the small sleeve 902 is provided with the hanging bush 901, and the stabilizer bar 8 penetrates through the hanging bush 901.
The center lines of the stabilizer bar 8, the suspension bush 901 and the connection bush 11 are parallel to the rear axle 1.
And the rear axle 1 is provided with a mounting pin shaft of a shock absorber 5 and a spiral spring 6.
The working principle is as follows: the invention connects the stabilizer bar 8 through the connecting bush 11 by the L-shaped connecting piece 7, the stabilizer bar 8 is bent backwards and is connected with the bush fixing block 10 and the connecting bush 11 through a pin shaft, two spiral springs 6 at two ends of the rear axle 1 are effectively connected together, when wheels at one side swing up and down, the size of the swing amplitude of up-down and left-right can be effectively relieved by pulling the spiral spring 6 at the other side, the upper side and the lower side of the central rocker arm 303 are respectively connected with the rear axle 1 and the frame, two ends of the pull rod 301 are connected with the frame, different from the transverse independent pull rod 301 in the prior art, the moment is increased at two ends, the acting force dispersed to the other end of the pull rod 301 is reduced, the acting force is dispersed, the swing amplitude of up-down in the automobile running process is effectively reduced, and the chassis damping flexibility is increased.
The device that obtains through above-mentioned design can satisfy a flexible shock attenuation vehicle chassis structure, can effectively reduce non-independent suspension vertical oscillation and horizontal hunting in going, increases vehicle chassis's pliability and riding comfort, increases stability and the security of the vehicle driving in-process.
Example 2
A flexible shock-absorbing automobile chassis structure comprises a rear axle 1, a transverse swing arm 3 and a hanging device 9; the rear axle is characterized in that the center of the rear axle 1 is connected with a longitudinal thrust pipe 2 in the forward direction, the upper part of the longitudinal thrust pipe 2 at the connection position is provided with a transverse swing arm 3, the transverse swing arm 3 comprises a left pull rod 301 and a right pull rod 301 and a central swing arm 303, the central swing arm 303 is connected with a central bushing 302 through a bolt 304, the lower end of the central swing arm 303 is connected with the longitudinal thrust pipe 2 through a pin shaft, and the upper end of the central swing arm 303 is connected with a frame; the rear axle comprises a rear axle 1 and is characterized in that both ends of the rear axle 1 are provided with hubs 4, a shock absorber 5 and a spiral spring 6, the upper end of the spiral spring 6 is connected with a frame through an L-shaped connecting piece 7, a stabilizer bar 8 is arranged between the L-shaped connecting pieces 7, the stabilizer bar 8 is bent backwards and connected with a bush fixing block 10 and a connecting bush 11 through a pin shaft, and a hanging device 9 is arranged on the stabilizer bar 8; the hanging device 9 comprises a hanging bush 901, a small sleeve 902, a hanging rod 903 and a mounting seat 904; the mounting 904 connects the hanger 9 to the frame.
Preferably, the wheel hubs 4, the shock absorbers 5 and the coil springs 6 arranged at both ends of the rear axle are symmetrical and paired.
The lower end of the central rocker arm 303 is connected to the upper part of the longitudinal thrust rod through a pin shaft, the lower end of the central rocker arm 303 is connected to a vehicle frame, and the ends, far away from the central rocker arm 303, of the left transverse swing arm and the right transverse swing arm are connected to the vehicle frame through sleeve holes 307 of the concave mounting piece 306.
One end of the pull rod 301 is connected to the central rocker arm 303, the central bushing 302 is clamped by a vertical plate of the central rocker arm 303, the central bushing 302 is connected to the central rocker arm 303 through the bolt 304, and the nut is fixed.
The transverse swing arm 3 comprises a mounting 306 and an inner sleeve (305); an inner sleeve 305 is arranged at the end, far away from the central rocker arm 303, of the pull rod 301, the inner sleeve 305 is connected with the mounting part 306 through a pin shaft, the lower end of the central rocker arm 303 is connected with the rear axle 1 through a pin shaft, and the upper end of the central rocker arm 303 is connected with a vehicle frame.
The rear axle is characterized in that the two ends of the rear axle 1 are connected with the shock absorbers 5 and the spiral springs 6, the upper ends of the spiral springs 6 are connected to the frame through L-shaped connecting pieces 7, the two connecting pieces 7 are connected through stabilizer bars 8, the stabilizer bars 8 are bent backwards and connected with a bush fixing block 10 and a connecting bush 11 through pin shafts, and two hanging devices 9 are arranged on the stabilizer bars 8.
The hanging device 9 comprises a flat plate hole mounting seat 904 mounted on the frame, a small sleeve 902 fixed by a pin shaft is connected below the mounting seat 904 through a hanging rod 903, the bottom end of the small sleeve 902 is provided with the hanging bush 901, and the stabilizer bar 8 penetrates through the hanging bush 901. The center lines of the stabilizer bar 8, the suspension bush 901 and the connection bush 11 are parallel to the rear axle 1.
The spiral spring is a compression spring and is made of spring steel; the wire diameter D1 is 5.8-21.5mm, the thread pitch D is 9.5-25mm, and the length L is 80-280 mm. Further, the wire diameter d1 and the length L satisfy d1 · L, 580 is not less than 5950. When d1 & L is less than 580, the energy storage and shock absorption provided by the spiral elasticity are insufficient; when d1 · L is greater than 5950, the coil spring is too stiff and not comfortable, and is not conducive to shock absorption at light loads.
In order to improve the flexibility, the bearing capacity and the comfort of the automobile chassis structure, the wire diameter D1, the screw pitch D and the length L of the compression spring satisfy the following relations:
d1＝α·(L/D)；
wherein α is the wire diameter coefficient of the spring, and the value range is 0.35-6.42.
The connecting bushing is made of rubber so as to buffer the impact generated when the automobile chassis encounters vibration.
The connecting bushing is made of rubber, preferably natural rubber, chloroprene rubber, nitrile rubber or ethylene propylene rubber, so as to buffer the impact generated when the automobile chassis is in vibration. The Shore hardness Y of the rubber connecting bushing is 20-90, and the rebound rate kappa is 20-80%; furthermore, the shore hardness Y and the resilience k of the connecting bushing satisfy the condition that k is delta-Y1/2Wherein, the delta is the coefficient of resilience rate and the value range is 0.04 to 0.16.
In order to achieve better cooperation between the spiral spring and the rubber connecting bush to improve the flexibility, the bearing capacity and the comfort of the automobile chassis structure, the Shore hardness Y and the rebound rate kappa of the connecting bush satisfy the following relations with the line diameter D1, the thread pitch D and the length L of the spring:
wherein the content of the first and second substances,
the value range is 0.25-32.6 for adjusting the coefficient.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A flexible shock-absorbing automobile chassis structure comprises a rear axle (1), a transverse swing arm (3), a bolt (304) and a hanging device (9); the rear axle is characterized in that the center of the rear axle (1) is connected with a longitudinal thrust pipe (2) in the forward direction, the upper part of the longitudinal thrust pipe (2) at the joint is provided with a transverse swing arm (3), the transverse swing arm (3) comprises a left pull rod (301), a right pull rod (301) and a central swing arm (303), the central swing arm (303) is connected with a central bushing pipe (302), the lower end of the central swing arm (303) is connected with the longitudinal thrust pipe (2), and the upper end of the central swing arm (303) is connected to a frame; both ends of the rear axle (1) are provided with hubs (4), a shock absorber (5) and a spiral spring (6); the upper end of the spiral spring (6) is connected with the frame through an L-shaped connecting piece (7), a stabilizer bar (8) is arranged between the L-shaped connecting pieces (7), the stabilizer bar (8) is bent backwards and connected with a bush fixing block (10) and a connecting bush (11), and a hanging device (9) is arranged on the stabilizer bar (8);
the spiral spring (6) is a compression spring, the section of the compression spring is circular, the wire diameter d1 and the length L of the compression spring meet the requirement that d 1. L is greater than or equal to 580 and less than or equal to 5950, and the unit of the wire diameter d1 and the unit of the length L are both mm;
the connection bushing (11) has a Shore hardness Y and a rebound resilience k satisfying k = δ · Y1/2Wherein, the delta is the coefficient of resilience rate and the value range is 0.04 to 0.16.
2. A flexible shock-absorbing automobile chassis structure according to claim 1, characterized in that the ends of the left and right transverse swing arms (3) far away from the central swing arm (303) are connected with the automobile frame through trepan holes (307) of a concave mounting part (306).
3. A flexible shock absorbing automotive chassis structure according to claim 1 or 2, characterized in that one end of said tie rod (301) is connected to said central rocker arm (303), said central bushing tube (302) is clamped by the riser of said central rocker arm (303), and said central bushing tube (302) and said central rocker arm (303) are connected by means of a bolt (304) and a nut.
4. A flexible shock absorbing automotive chassis structure according to claim 1, characterized in that said transverse swing arm (3) comprises a mounting (306) and an inner sleeve (305); an inner sleeve (305) is arranged at the end, away from the central rocker arm (303), of the pull rod (301).
5. A flexible shock-absorbing automobile chassis structure according to claim 4, characterized in that the inner sleeve (305) is connected with the mounting member (306) through a pin, the lower end of the central rocker arm (303) is connected with the rear axle (1) through a pin, and the upper end is connected with the automobile frame.
6. The flexible shock-absorbing automobile chassis structure is characterized in that the hanging device (9) comprises a flat plate hole mounting seat (904) mounted on the automobile frame, a small sleeve (902) fixed by a pin shaft is connected below the mounting seat (904) through a hanging rod (903), a hanging bush (901) is arranged at the bottom end of the small sleeve (902), and the stabilizer bar (8) penetrates through the hanging bush (901).
7. A flexible shock-absorbing automobile chassis structure according to claim 1, characterized in that the centre lines of the stabilizer bar (8), the suspension bush (901) and the connection bush (11) are parallel to the rear axle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343383.5A CN109986921B (en) | 2019-04-26 | 2019-04-26 | Flexible shock attenuation vehicle chassis structure |
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| CN201910343383.5A CN109986921B (en) | 2019-04-26 | 2019-04-26 | Flexible shock attenuation vehicle chassis structure |
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| CN109986921B true CN109986921B (en) | 2020-07-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492411Y (en) * | 2001-06-22 | 2002-05-22 | 柳州五菱汽车有限责任公司 | Screw linkage oscillating-arm rear suspension |
| DE102009043855A1 (en) * | 2009-08-25 | 2011-05-12 | Benteler Automobiltechnik Gmbh | Beam axle |
| CN202029663U (en) * | 2011-04-02 | 2011-11-09 | 河北中兴汽车制造有限公司 | Automotive suspension system |
| CN203567504U (en) * | 2013-10-16 | 2014-04-30 | 北京汽车研究总院有限公司 | Rear suspension assembly for automobile and automobile |
| CN104129251B (en) * | 2014-08-14 | 2017-04-05 | 阿尔特汽车技术股份有限公司 | Automobile six-bar linkage rigid axle suspension structure |
| CN206406716U (en) * | 2017-01-12 | 2017-08-15 | 上海燃料电池汽车动力系统有限公司 | Automobile integral bridge type suspension frame structure |
| CN207955246U (en) * | 2018-02-01 | 2018-10-12 | 阿尔特汽车技术股份有限公司 | Whole bridge multi link rigid axle suspension structure |
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