CN108725124B - Wheeled vehicle suspension mechanism - Google Patents
Wheeled vehicle suspension mechanism Download PDFInfo
- Publication number
- CN108725124B CN108725124B CN201810509559.5A CN201810509559A CN108725124B CN 108725124 B CN108725124 B CN 108725124B CN 201810509559 A CN201810509559 A CN 201810509559A CN 108725124 B CN108725124 B CN 108725124B
- Authority
- CN
- China
- Prior art keywords
- axle
- balance beam
- connecting rod
- hinged
- beams
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B60G21/045—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 different axles on the same side of the vehicle, i.e. the left or the right side
-
- 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
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/81—Interactive suspensions; arrangement affecting more than one suspension unit front and rear unit
-
- 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
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/83—Type of interconnection
- B60G2204/8302—Mechanical
-
- 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
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/83—Type of interconnection
- B60G2204/8306—Permanent; Continuous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/04—Trailers
- B60G2300/042—Semi-trailers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention relates to a wheeled vehicle suspension mechanism, wherein primary balance beams of two suspension devices with the same structure are respectively hinged on longitudinal beams on two sides of a frame through pin shafts at the base ends of the primary balance beams, one end of each primary balance beam is connected with the upper ends of connecting rods through a spherical hinge or is hinged with the base ends of two secondary balance beams through pin shafts, the other end of each primary balance beam is hinged with the base ends of the other secondary balance beams through pin shafts, two ends of each secondary balance beam are respectively connected with the upper ends of the connecting rods through spherical hinges, and the lower ends of each connecting rod are respectively connected with one end of each corresponding axle through spherical hinges; the lower ends of the connecting rods on the other side are respectively hinged with the other ends of the axles through spherical hinges; each axle is provided with a longitudinal limiting device and a transverse limiting device, an inverted U-shaped groove on the longitudinal limiting device is clamped on the axle, a swinging shaft on the middle position of each axle is clamped in a strip-shaped groove of the transverse limiting device, and the centers A1 and A2 of spherical hinges at the lower ends of two connecting rods hinged with two sides of the same axle and the center B of the swinging shaft are approximately on the same horizontal line.
Description
Technical Field
The invention relates to a semi-trailer type transport vehicle, in particular to a wheeled vehicle suspension mechanism of the transport vehicle.
Background
The existing suspension of the semitrailer type transport vehicle mainly comprises the following forms: (1) leaf springs are suspended independently in series (big three bridges): the characteristic is that the vibration damping springs are installed between the axles and the frame on both sides of each axle, but for mountain blade transport vehicles, the rigidity of the springs is so great that it can be regarded as rigid, without buffering and vibration damping effects, due to the excessive weight of the vehicle or due to the requirement of anti-overturning property. Because of no buffering and vibration damping function, the load born by the front and rear axles is extremely uneven when the road surface is uneven, and the left-right swing amplitude of the vehicle body is large during transportation. (2) Three-wire six-axle (axle) rigid suspension: the vehicle suspension device is characterized in that each axle has the functions of front-back and left-right swing, and the left-right swing amplitude is larger, but the front axle and the rear axle are mutually related, namely are non-independent, and the up-down swing amplitude is too small and is only about 55mm, so that when the road surface unevenness in the front-back direction exceeds 55mm, the vehicle suspension device loses the buffering and vibration reducing functions, the front-back axle load distribution is uneven in the transportation process, and the vehicle body left-right swing amplitude is larger. (3) Hydraulic suspension (hydraulic plate): the hydraulic suspension frames are provided with swing shafts which are arranged approximately horizontally in the front-rear direction, the axles can swing left and right, the hydraulic suspension frames on each side can independently lift and fall, and the oil paths are communicated, so that in theory, when the load born by the front and rear axles deviates, hydraulic oil between the axles can automatically flow to the hydraulic suspension frames with low working pressure, but because of the resistance of the hydraulic pipelines and the valves and the relatively quick speed of the vehicle, the hydraulic oil flows slowly, that is to say, when the road surface in the front-rear direction is uneven, the form of the hydraulic suspension frames does not have the function of buffering and damping, and other advantages except that each axle can steer and swing left and right, the vehicle plate leveling function is not provided, and when the road surface is uneven, the load born by each hydraulic suspension frame is uneven, and the vehicle body swing left and right has larger amplitude.
Disclosure of Invention
In order to improve the stability of a vehicle and to provide a vibration damping function, the invention provides a suspension mechanism for a wheeled vehicle, wherein the suspension mechanism can freely move up and down even if the road surface is uneven, and the borne loads are equal, so that the situation that a single wheel bears a large load can not occur. In addition, the wheels can freely jump up and down according to the condition of the road surface, and the height of the up-and-down jump of the vehicle body is less than 1/3 of the height of the up-and-down jump of the wheels, so that the stability of the vehicle is improved.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the wheel type vehicle suspension mechanism comprises a left suspension device, a right suspension device, a frame and a plurality of axles, wherein the left suspension device and the right suspension device are of the same structure, primary balance beams of the two suspension devices are respectively hinged to longitudinal beams on the left side and the right side of the frame through primary balance beam base end pins, one end of each primary balance beam is connected with the upper end of a connecting rod through a spherical hinge or is hinged to the base end of a secondary balance beam through a pin, the other end of each primary balance beam is hinged to the base end of another secondary balance beam through a pin, two ends of each secondary balance beam are respectively connected with the upper ends of the corresponding connecting rods through spherical hinges, and the lower end of each connecting rod is respectively connected with one end of the corresponding axle through a spherical hinge; the lower ends of the connecting rods on the other side are respectively hinged with the other ends of the axles through spherical hinges; each axle is further provided with a longitudinal limiting device and a transverse limiting device, the longitudinal limiting device is provided with an inverted U-shaped groove with an upper opening and a lower opening, the inverted U-shaped groove is clamped on the axle to limit the longitudinal movement of the axle, the transverse limiting device is provided with an elongated groove in the upper and lower directions, a swing shaft fixed at the middle position of each axle is clamped in the groove to limit the transverse movement of the axle, and the spherical hinge center A1, the spherical hinge center A2 and the center B of the swing shaft arranged at the middle position of the axle are approximately on the same horizontal line.
When the rear axle is provided with three axles, one end of the primary balance beam is connected with the upper end of the first connecting rod through a spherical hinge, and the lower end of the first connecting rod is hinged with one end of the first axle through a spherical hinge; the second-stage balance beams of the two suspension devices are hinged to the other end of the first-stage balance beam through pin shafts at the base ends of the second-stage balance beams; two ends of the secondary balance beam are respectively connected with the upper ends of the second connecting rod and the third connecting rod through spherical hinges, and the lower ends of the second connecting rod and the third connecting rod are respectively hinged with one ends of the second axle and the third axle through spherical hinges.
When the rear axle is four axles, the two secondary balance beams are hinged to the two ends of the primary balance beam through pin shafts at the base ends of the secondary balance beams; the two ends of the secondary balance beam are respectively connected with the upper ends of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod through spherical hinges, and the lower ends of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are respectively hinged with one ends of the first axle, the second axle, the third axle and the fourth axle through spherical hinges.
When the suspension device is balanced, the stress on the two ends of the primary balance beam is equal, the stress on the two ends of each secondary balance beam is equal, so that the stress on each axle is equal, the primary balance beam can swing around the pin shaft, the secondary balance beam moves up and down along with the swing of the primary balance beam and swings around the pin shaft, and each end part of the suspension device, which is connected with the connecting rod, can freely move up and down.
The axles are movable up and down along the longitudinal restraining means and the lateral restraining means and are swingable about a swing shaft center B fixed at the intermediate position of each axle and caught in a groove of the lateral restraining means.
The beneficial effects of the invention are as follows:
the invention relates to a wheel type vehicle suspension mechanism, which belongs to a rigid suspension mechanism, wherein the base end part of a primary balance beam is directly hinged on a longitudinal beam of a frame, one end of the primary balance beam is connected with the upper end of a connecting rod through a spherical hinge, and the other end of the primary balance beam is hinged with a secondary balance beam. The base end part of the secondary balance beam is hinged to the primary balance beam, so that the secondary balance beam can swing up and down around a hinged pin shaft. Thus, the upper end of the connecting rod directly connected with the primary balance beam and the upper end of the connecting rod connected with the secondary balance beam can move up and down, so that the axle, namely the wheel, connected with the lower end of each connecting rod can move up and down. Since the ratio of the lengths of the first-stage balance beam and the second-stage balance beam from the respective ends to the base ends is designed so that the forces applied to the respective axles are equal, the respective axles can freely move up and down even if the road surface is uneven, the applied loads are equal, and a case where a single wheel is applied with a large load does not occur. In addition, the wheels can freely jump up and down according to the condition of the road surface, and the height of the up-and-down jump of the vehicle body is less than 1/3 of the height of the up-and-down jump of the wheels. The vehicle body has small side-to-side jumping height, small side-to-side swing amplitude and high stability.
Drawings
FIG. 1 is a schematic overall structure diagram of a semitrailer;
wherein: (a) is a front view, and (b) is a top view;
FIG. 2 is a schematic view of a wheeled vehicle suspension mechanism of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a block diagram of a primary balance beam;
wherein: (a) is a longitudinal sectional view, and (b) is a top view;
FIG. 5 is a block diagram of a secondary balance beam;
wherein: (a) is a longitudinal sectional view, and (b) is a top view;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 7 is a transverse cross-sectional view showing the state of each component of the suspension when the axle swings left and right;
fig. 8 is a schematic view showing the state of each component of the suspension device when each wheel jumps up and down on an uneven road surface;
FIG. 9 is a schematic illustration of the relationship of the axle raising or lowering distance to the vehicle body raising or lowering distance on an uneven road surface;
FIG. 10 is a schematic illustration of the mechanical movements of a balance beam, links and axles of a wheeled vehicle suspension mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic illustration of the mechanical movements of a wheeled vehicle suspension mechanism axle, link and rocker shaft according to an embodiment of the present invention;
fig. 12 is a schematic diagram of the mechanism movements of the balance beam, links and axles of the four axle solution of the wheeled vehicle suspension of the present invention.
In fig. 1 to 11: the vehicle comprises A1-suspension device, A2-vehicle frame, an 8-transverse pull rod, a 91-vehicle axle I, a 92-vehicle axle II, a 93-vehicle axle III, a 121-vehicle link I, a 122-vehicle link II, a 123-vehicle link III, a 13-first-stage balance beam, a 14-first-stage balance beam base end pin shaft, a 15-second-stage balance beam, a 16-second-stage balance beam base end pin shaft, a 17-longitudinal beam, a 19-swing shaft, a 20-transverse limiting device, a 21-longitudinal limiting device, a spherical hinge center for connecting A1 and A2-vehicle links with the vehicle axle and a B-swing shaft center.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1 to 6, the suspension mechanism for a wheeled vehicle according to the present invention includes left and right suspension devices 1, a frame 2, and a plurality of axles. The suspension device 1 of the invention is different from the existing semitrailer suspension device, and adopts a brand new multi-stage balance beam structure. The primary balance beams 13 of the two suspension devices 1 are respectively hinged on (inside) longitudinal beams 17 on two sides of the frame 2 through pin shafts 14 at the base ends of the primary balance beams, one end of each primary balance beam 13 is connected with the upper end of a first connecting rod 121 through a spherical hinge, and the lower end of the first connecting rod 121 is connected with one end of a first axle 91 through a spherical hinge; the secondary balance beam 15 is hinged to the other end (inside) of the primary balance beam 13 through a pin 16 at the base end of the secondary balance beam; two ends of the secondary balance beam 15 are respectively connected with the upper ends of the second connecting rod 122 and the third connecting rod 123 through spherical hinges, and the lower ends of the second connecting rod 122 and the third connecting rod 123 are respectively connected with one ends of the second axle 92 and the third axle 93 through spherical hinges.
The suspension device on the other side has the same structural form, and the lower ends of the connecting rods are respectively hinged with the other ends of the axles through spherical hinges.
As shown in fig. 4 (a), (b), the distance 2S from the base end portion of the primary balance beam 13 to one end portion thereof is 2 times the distance S from the other end portion thereof, and one end portion of the primary balance beam 13 is directly hinged to the upper end of the first link 121 and the other end portion thereof is hinged to the base end portion of the secondary balance beam 15, so that the force applied to the pin 16 of the base end portion of the secondary balance beam which is hinged to the secondary balance beam 15 is twice the force applied to the pin which is directly hinged to the upper end of the first link 121 when the primary balance beam 13 is balanced.
As shown in fig. 5 (a) and (b), the distances L from the base end portions of the secondary balance beam 15 to the both end portions thereof are equal, so that the forces applied to the both end portions of the secondary balance beam 15 are equal, and the forces applied to the base end portions of the secondary balance beam 15 are the sum of the forces applied to the both end portions thereof. Therefore, when the suspension device 1 of the present invention balances, the first end of the primary balance beam 13 and the second end of the secondary balance beam 15 are stressed equally, and the first end of the link 121, the second end of the link 122 and the third end of the link 123 are hinged to the upper ends of the link 121, the second end of the link 122 and the third end of the link 123 respectively through ball joints, and the lower ends of the link 121, the second end of the link 122 and the third end of the link 123 are hinged to one ends of the first axle 91, the second axle 92 and the third axle 93 respectively through ball joints, so that the stress of each axle is equal. As shown in fig. 2, in the present embodiment, since the wheelbases of the three axles are equal, s=l.
Since the base end portion of the primary balance beam 13 is hinged to the longitudinal beam 17, the primary balance beam 13 can swing around the pin 14 of the base end portion of the primary balance beam, while the base end portion of the secondary balance beam 15 is hinged to the other end portion of the primary balance beam 13, and the secondary balance beam 15 can move up and down along with the swing of the primary balance beam 13 and can swing around the pin 16 of the base end portion of the secondary balance beam, so that the one end portion of the primary balance beam 13 and the two end portions of the secondary balance beam 15 connected with the upper end portions of the first link 121, the second link 122 and the third link 123 of the suspension device 1 of the present invention can move up and down freely.
Since the lateral restraining means 20 and the longitudinal restraining means 21 of each axle are identical, the lower ends of the first link 121, the second link 122 and the third link 123 are respectively connected to one ends of the first axle 91, the second axle 92 and the third axle 93 by ball joints, and the up-down moving states thereof are similar, it is possible to analyze only one axle, the second axle 92, when studying the rule of the up-down movement and/or the left-right swing of the axles.
As shown in fig. 1 (a), (b) and fig. 2, the longitudinal restriction means 21 is an inverted U-shaped groove opened up and down, and is caught on the axle 92 to restrict the longitudinal movement of the axle two 92 without restricting the up-down movement and the lateral movement thereof. As shown in fig. 6, the lateral restraining device 20 is a vertically elongated groove, and the swing shaft 19 fixed to the intermediate position of the axle 92 is engaged with the groove, so that the axle 92 can swing not only laterally about the center B of the swing shaft 19, but also vertically along the elongated groove of the lateral restraining device 20 and the inverted U-shaped groove of the longitudinal restraining device 21, but also cannot move laterally.
As shown in fig. 2, the base end portion of the secondary balance beam 15 is hinged to the other end portion of the primary balance beam 13, so that the movement law thereof is related not only to the swing angle of the secondary balance beam 15 but also to the swing angle of the primary balance beam 13. The upper end of the second link 122 is connected to one end of the second balance beam 15, but the end of the second balance beam 15 moves in a longitudinal plane passing through the center line of the side member 17 of the frame 2 and perpendicular to the ground, that is, the center of the spherical hinge at the upper end of the second link 122 moves in a longitudinal plane passing through the center line of the side member 17 and perpendicular to the ground, regardless of the swing angles of the first and second balance beams 13 and 15.
In addition, as shown in fig. 6, due to the lateral restraining means 20 and the longitudinal restraining means 21, the axle 92 can only move up and down or swing left and right about the center B of the swing shaft 19 in a lateral plane passing through the center line of the axle 92 and perpendicular to the ground, that is, the spherical hinge centers A1, A2 of the lower ends of the links two 122, 122' (the wheel-type vehicle suspension mechanism of the present invention includes two identical suspension means left and right, and the other side parts or portions are denoted by prime marks in this specification) move in a lateral plane passing through the center line of the axle 92 and perpendicular to the ground. Therefore, the wheel-type vehicle suspension mechanism of the present invention is a space mechanism composed of two orthogonal planar mechanisms, and the upper ends and the lower ends of the second connecting rods 122, 122 'do not move in the same plane, so that the joint of the two planar mechanisms, namely the upper and lower ends of the connecting rods 122, 122', are spherical hinges.
Since the lower ends of the second links 122, 122 'are connected to both ends of the axle 92 by spherical hinges, respectively, the axle 92 is restricted by the lateral restricting device 20 and the longitudinal restricting device 21, not only can the second links 122, 122' on both sides move up and down with the swinging of the primary balance beam 13 and the secondary balance beam 15, but also can swing left and right around the center B of the swing shaft 19. As shown in fig. 7 and 8, each wheel can freely jump up and down when the road surface is uneven.
As shown in fig. 6, the center of spherical hinge A1, A2 of the lower ends of the two links 122, 122' hinged to both sides of the same axle 92 and the center B of the swing shaft 19 provided at the intermediate position of the axle 92 are substantially on the same horizontal line. Therefore, as shown in fig. 7, when the angle of the left-right swing of the axle two 92 is relatively small, the distances of the spherical hinge centers A1, A2 at the lower ends of the links two 122, 122 'moving inward are small, and the spherical hinge deflection angles at the upper and lower ends of the links two 122, 122' are small.
As shown in fig. 6 and 7, if the wheel track is C1, the horizontal distance from the center of a wheel on one side to the center of a spherical hinge A1 of the suspension on the other side is C2, and if the distance by which the wheel on one side is raised or lowered is H when the road surface is uneven, the distance by which the center of a spherical hinge A1 of the suspension on the one side is raised or lowered is h×c2/C1.
As shown in fig. 8 and 9, as is known from the geometric relationship of the primary balance beam 13 and the secondary balance beam 15, if the distance by which the center A1 of the spherical hinge hinged to the axle one 91 is raised or lowered is h, the distance by which the vehicle body side (the primary balance beam base end pin 14) is raised or lowered is h/3. That is, if the distance by which the wheels on a certain side rise or fall is H, the distance by which the vehicle body side rises or falls is h×c2/C1/3. Since C2/C1 < 1, it can be said that if a wheel on a certain side is raised or lowered by H, the distance by which the vehicle body side is raised or lowered is smaller than H/3. That is, the suspension device of the present invention has a vibration damping function, in which the distance of the wheel jumping up and down is large, but the distance of the vehicle body jumping up and down is small.
Therefore, the wheel type vehicle suspension mechanism of the invention comprises a left suspension device 1, a right suspension device 1, a frame 2 and three axles, wherein the primary balance beams 13 of the two suspension devices 1 are respectively hinged on (inside) longitudinal beams 17 on two sides of the frame 2 through pin shafts 14 at the base end parts of the primary balance beams, one end of each primary balance beam 13 is connected with the upper end of a connecting rod I121 through a spherical hinge, and the lower end of the connecting rod I121 is hinged with one end of an axle I91 through a spherical hinge; the secondary balance beam 15 is hinged to the other end (inside) of the primary balance beam 13 through a pin 16 at the base end of the secondary balance beam; two ends of the secondary balance beam 15 are respectively connected with the upper ends of the second connecting rod 122 and the third connecting rod 123 through spherical hinges, and the lower ends of the second connecting rod 122 and the third connecting rod 123 are respectively connected with one ends of the second axle 92 and the third axle 93 through spherical hinges; the suspension device on the other side has the same structural form, and the lower end of each connecting rod is respectively hinged with the other end of each axle through a spherical hinge; each axle is further provided with a longitudinal restraining device 21 and a transverse restraining device 20, wherein the longitudinal restraining device 21 is an inverted U-shaped groove with an upper opening and a lower opening, and is clamped on the axle 92 to restrain the longitudinal movement of the axle two 92, the transverse restraining device 20 is an elongated groove in the upper-lower direction, the swing shaft 19 fixed on the middle position of the axle 92 is arranged in the groove, and the spherical hinge centers A1 and A2 of the lower ends of the two connecting rods two 122 and 122' hinged with the two sides of the same axle 92 and the center B of the swing shaft 19 arranged on the middle position of the axle 92 are approximately on the same horizontal line.
Since the respective ends of the primary balance beam 13 and the secondary balance beam 15 can be independently and freely jumped up and down, and the respective links are provided between the respective ends of the primary balance beam 13 and the secondary balance beam 15 and the respective axles, and subjected to the same forces, both ends of the respective axles can only be jumped up and down due to the restriction of the lateral restriction device 20 and the longitudinal restriction device 21. Therefore, even if the road surface is uneven, each wheel can freely jump up and down and the load received is equal, and a situation that a single wheel receives a large load does not occur. In addition, the wheels can freely jump up and down according to the condition of the road surface, and the height of the up-and-down jump of the vehicle body is less than 1/3 of the height of the up-and-down jump of the wheels.
In addition, the embodiment in which the rear axle is three axles is described above, and the mechanism movement diagram thereof is shown in fig. 10 and 11. All numbers in the figures are the same as in the embodiments. 13 'is the primary balance beam on the other side and 121' is the connecting rod on the other side. The wheeled vehicle suspension of the present invention is not limited to a three-axle vehicle, and may be applied to any vehicle having a plurality of axles.
Fig. 12 is a schematic diagram showing the mechanism movement of the suspension mechanism for a wheeled vehicle of which the rear axle is four axles according to the present invention. In the drawing 222, the base ends of the primary balance beams 200 of the two suspension devices 102 are hinged on the longitudinal beams of the frame 222, the base ends of the secondary balance beams 201 and 202 are respectively hinged on the two ends of the primary balance beams 200, the distances from the base ends to the two ends of the primary balance beams 200 are equal, the distances from the base ends of the secondary balance beams 201 and 202 to the two ends of the secondary balance beams are equal, the two ends of the secondary balance beams 201 are respectively hinged on the upper ends of the first connecting rod 203 and the second connecting rod 204 through spherical hinges, the lower ends of the first connecting rod 203 and the second connecting rod 204 are respectively hinged on one ends of the first axle 211 and the second axle 212 through spherical hinges, the two ends of the secondary balance beams 202 are respectively hinged on the upper ends of the third connecting rod 205 and the fourth connecting rod 206 through spherical hinges, and the lower ends of the third connecting rod 205 and the fourth connecting rod 206 are respectively hinged on one ends of the third axle 213 and the fourth axle 214 through spherical hinges.
The suspension device on the other side has the same structural form, and the lower ends of the connecting rods are respectively hinged with the other ends of the axles through spherical hinges. The schematic diagram of the mechanism movement of each axle 211, 212, 213 and 214 is the same as that of fig. 11, and the movement law and form are the same as those of the embodiment.
Since the base ends of the primary balance beam 200 are equal in distance to both ends thereof, the base ends of the secondary balance beam 201 and the secondary balance beam 202 are equally stressed, and the base ends of the secondary balance beam 201 and the secondary balance beam 202 are equal in distance to both ends thereof, so that the connecting rods 203, 204, 205, 206 connected to the respective ends of the secondary balance beam 201 and the secondary balance beam 201 are equally stressed. For the reasons described in the above embodiments, both ends of each axle can only bounce up and down and swing left and right around the center B of the swing shaft 19 at the axle intermediate position. Therefore, even if the road surface is uneven, each wheel can freely jump up and down and the load received is equal, and a situation that a single wheel receives a large load does not occur. In addition, the wheels can freely jump up and down according to the condition of the road surface, and the height of the up-and-down jump of the vehicle body is less than 1/4 of the height of the up-and-down jump of the wheels.
That is, the wheel-type vehicle suspension mechanism of the present invention of four axles comprises a left and right two suspension devices 102, a frame 222 and four axles, wherein the primary balance beams 200 of the two suspension devices 102 are respectively hinged on the longitudinal beams at both sides of the frame 222 through the pin shafts at the base end parts of the primary balance beams, and the two secondary balance beams 201, 202 are hinged on both end parts of the primary balance beams 200 through the pin shafts at the base end parts of the secondary balance beams; two ends of the secondary balance beams 201 and 202 are respectively hinged with the upper ends of a first connecting rod 203, a second connecting rod 204, a third connecting rod 205 and a fourth connecting rod 206 through spherical hinges, the lower ends of the first connecting rod 203, the second connecting rod 204, the third connecting rod 205 and the fourth connecting rod 206 are respectively hinged with one ends of a first axle 211, a second axle 212, a third axle 213 and a fourth axle 214 through spherical hinges, suspension devices on the other sides have the same structural form, and the lower ends of the connecting rods are respectively hinged with the other ends of the axles through spherical hinges; each axle is also provided with a longitudinal limiting device and a transverse limiting device, the longitudinal limiting device is an inverted U-shaped groove with an upper opening and a lower opening, the inverted U-shaped groove is clamped on each axle to limit the longitudinal movement of each axle, the transverse limiting device is an elongated groove in the upper-lower direction, the swing shafts fixed at the middle positions of the axles are arranged in the grooves, the spherical hinge centers A1 and A2 of the lower ends of the two connecting rods hinged with the two sides of the same axle and the center B of the swing shaft arranged at the middle position of each axle are approximately on the same horizontal line.
According to the idea and main structural form of the invention, it is also possible to design five-axis, six-axis or even more-axis wheeled vehicle suspension mechanisms, which are also within the scope of the invention.
The above embodiments are designed so that the forces to which each wheel is subjected are the same, but if the forces to which each wheel is subjected are not equal, the adjustment can be made by changing the ratio of the distances from the base end portions of the primary and secondary balance beams to the both end portions thereof.
Claims (5)
1. The utility model provides a wheeled vehicle suspension mechanism, includes two left and right sides linkage that the structure is the same, frame and a plurality of axletree, its characterized in that: the first-stage balance beams of the two suspension devices are respectively hinged on longitudinal beams on the left side and the right side of the frame through first-stage balance beam base end pins, one end of each first-stage balance beam is connected with the upper end of a connecting rod through a spherical hinge or is hinged with the second-stage balance beam base end through a pin, the other end of each first-stage balance beam is hinged with the other second-stage balance beam base end through a pin, two ends of each second-stage balance beam are respectively connected with the upper ends of the connecting rods through spherical hinges, and the lower ends of the connecting rods are respectively connected with one ends of corresponding axles through spherical hinges; the lower ends of the connecting rods on the other side are respectively hinged with the other ends of the axles through spherical hinges; each axle is further provided with a longitudinal limiting device and a transverse limiting device, the longitudinal limiting device is provided with an inverted U-shaped groove with an upper opening and a lower opening, the inverted U-shaped groove is clamped on the axle to limit the longitudinal movement of the axle, the transverse limiting device is provided with an elongated groove in the upper and lower directions, and a swing shaft fixed at the middle position of each axle is clamped in the groove to limit the transverse movement of the axle; the spherical hinge center A1 and the spherical hinge center A2 of the lower ends of the two connecting rods hinged with the two sides of the same axle and the center B of the swing shaft arranged at the middle position of the axle are approximately on the same horizontal line.
2. A wheeled vehicle suspension mechanism according to claim 1, wherein: when the rear axle is three axles, one end of the primary balance beam is connected with the upper end of the first connecting rod through a spherical hinge, and the lower end of the first connecting rod is hinged with one end of the first axle through a spherical hinge; the second-stage balance beams of the two suspension devices are hinged to the other end of the first-stage balance beam through pin shafts at the base ends of the second-stage balance beams; two ends of the secondary balance beam are respectively connected with the upper ends of the second connecting rod and the third connecting rod through spherical hinges, and the lower ends of the second connecting rod and the third connecting rod are respectively hinged with one ends of the second axle and the third axle through spherical hinges.
3. A wheeled vehicle suspension mechanism according to claim 1, wherein: when the rear axle is four axles, the two secondary balance beams are hinged to the two ends of the primary balance beam through pin shafts at the base ends of the secondary balance beams; the two ends of the secondary balance beam are respectively connected with the upper ends of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod through spherical hinges, and the lower ends of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are respectively hinged with one ends of the first axle, the second axle, the third axle and the fourth axle through spherical hinges.
4. A wheeled vehicle suspension mechanism according to claim 1, wherein: when the suspension device is balanced, the stress on one end part of the primary balance beam and the stress on two end parts of the secondary balance beam are equal, so that the stress on each axle is equal, the primary balance beam can swing around the pin shaft, the secondary balance beam moves up and down along with the swing of the primary balance beam and swings around the pin shaft, and each end part of the suspension device, which is connected with the connecting rod, can freely move up and down.
5. A wheeled vehicle suspension mechanism according to claim 1, wherein: the axles are movable up and down along the longitudinal restraining means and the lateral restraining means and are swingable about a swing shaft center B fixed at the intermediate position of each axle and caught in a groove of the lateral restraining means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509559.5A CN108725124B (en) | 2018-05-24 | 2018-05-24 | Wheeled vehicle suspension mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509559.5A CN108725124B (en) | 2018-05-24 | 2018-05-24 | Wheeled vehicle suspension mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108725124A CN108725124A (en) | 2018-11-02 |
| CN108725124B true CN108725124B (en) | 2023-07-04 |
Family
ID=63936110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810509559.5A Active CN108725124B (en) | 2018-05-24 | 2018-05-24 | Wheeled vehicle suspension mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108725124B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113815375B (en) * | 2020-09-28 | 2024-03-01 | 北京京东乾石科技有限公司 | Automatic guiding transport vehicle and walking wheel set thereof |
| CN112223973A (en) * | 2020-10-15 | 2021-01-15 | 重庆涵拓科技有限公司 | Balance arm suspension and chassis with same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6298933B1 (en) * | 1999-10-08 | 2001-10-09 | Caterpillar Inc. | Equalizer bar stop assembly for limiting movement of the equalizer bar relative to the main frame of a track-type work machine |
| US6604756B2 (en) * | 2001-08-29 | 2003-08-12 | Emmanuel Simard & Fils (1983) Inc. | Tridem axle suspension |
| CN201951201U (en) * | 2011-03-18 | 2011-08-31 | 廊坊富邦德石油机械制造有限公司 | Three-axle swinging arm type balance suspension system |
| CN202319774U (en) * | 2011-11-28 | 2012-07-11 | 安徽奥泰特种车桥有限公司 | Double-point bearing rigidity suspension axle assembly |
| CN106938598A (en) * | 2016-01-04 | 2017-07-11 | 罗公祥 | A kind of Novel balance beam and apply its novel semi-trailer suspension system |
| CN208263919U (en) * | 2018-05-24 | 2018-12-21 | 远景能源（江苏）有限公司 | wheeled vehicle suspension mechanism |
-
2018
- 2018-05-24 CN CN201810509559.5A patent/CN108725124B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108725124A (en) | 2018-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9302559B2 (en) | Independent suspension system with self-compensated floating swing arm | |
| CZ294684B6 (en) | Pendular spring mounted axle suspension | |
| CN108725124B (en) | Wheeled vehicle suspension mechanism | |
| CN210553999U (en) | X-shaped arm for vehicle air suspension and air suspension assembly based on X-shaped arm | |
| CN111645470B (en) | X-shaped arm for vehicle air suspension and air suspension assembly based on X-shaped arm | |
| ES2772255T3 (en) | Pneumatic tandem axle suspension for a pair of rear axles of a vehicle, in particular a heavy goods vehicle | |
| US8146939B2 (en) | Roll-stabilizing fifth wheel apparatus | |
| CN102416836A (en) | Transversal leaf spring type front independent suspension mechanism with sliding blocks at two ends | |
| CN103660842A (en) | Plate spring balancing suspension bracket mechanism and engineering vehicle provided with plate spring balancing suspension bracket mechanism | |
| CN201721282U (en) | Semitrailer suspension system | |
| US4667974A (en) | Increased roll stability suspension system | |
| FI111831B (en) | Flatbed wagon bogie | |
| US4687222A (en) | Tandem axle air suspension | |
| CN107031677B (en) | Stable type railway goods train bogie | |
| CN208263919U (en) | wheeled vehicle suspension mechanism | |
| US3451692A (en) | Device for hydraulically blocking the spring means for a crane supporting vehicle | |
| KR20100067312A (en) | Assembly for a lower arm and a shock absorber bracket | |
| CN202944167U (en) | Double-cross-arm independent pneumatic suspension assembly of drive axle | |
| CN203713460U (en) | Double-rear axle air suspension system of heavy truck tractor | |
| CN102490564B (en) | Single-trailing arm independent front suspension for automobile | |
| CN101905638A (en) | Suspension system with linkage of two vehicle axles | |
| CN201442502U (en) | Double rear-axle air suspension bracket | |
| JPH0924717A (en) | Rear suspension | |
| CN102343780A (en) | Suspending system of semi-trailer | |
| CN219467490U (en) | Guide arm type air suspension system of cargo vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |