Suspension device and engineering machinery

Abstract

The invention relates to the technical field of vehicle frame structures, and discloses a suspension device and engineering machine.The suspension device comprises an axle assembly, a vehicle frame assembly, a plurality of elastic assemblies and a plurality of guiding assemblys.The elastic assemblies comprise at least one elastic piece, and the multiple elastic assemblies are arranged in the width direction of the vehicle frame assembly at intervals; the two ends of the elastic piece are rotationally connected with the frame assembly and the axle assembly correspondingly. The guide assembly comprises a plurality of guide plates stacked in the height direction of the frame assembly, and the extending direction of the guide plates is perpendicular to the width direction of the frame assembly. Wherein the multiple guide assemblies are arranged in the width direction of the frame assembly at intervals and connected with the axle assembly, any one of the two ends of each guide assembly is hinged to the frame assembly, and the other end of each guide assembly is arranged in the height direction of the frame assembly at intervals and makes contact with the frame assembly in a limiting mode in the width direction of the frame assembly. The occupied space can be reduced, the requirement for the strength of a vehicle body is low, and the smoothness of the whole vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle frame structures, and in particular to suspension devices and engineering machinery. Background Art

[0002] Suspension is a vital component of a vehicle, playing a multi-faceted and critical role in its operation, ensuring stability and safety while maintaining a balanced driving experience and comfort. Its design and performance directly impact the overall performance of the vehicle, making it one of the key technical links in automotive engineering.

[0003] In related technologies, suspensions are divided into leaf spring, oil-gas, and air suspension types. Due to the special layout of some vehicles, a single leaf spring, oil-gas, or air suspension cannot meet the layout requirements, and the vehicle may need to be arranged in a mixed manner. For example, leaf springs can bear vertical, longitudinal, and lateral forces, but the suspension stiffness cannot be adjusted and the suspension travel is small; oil-gas suspensions can only bear vertical forces, and their lateral forces are mainly borne by V-type thrust rod guide mechanisms or lateral thrust rods.

[0004] However, arranging a V-shaped thrust rod guide mechanism or a transverse thrust rod requires occupying a large chassis space and has high requirements on the frame strength. Summary of the Invention

[0005] The present application provides a suspension device and engineering machinery, which can reduce the occupied space, have low requirements on vehicle body strength, and improve the smoothness of the entire vehicle.

[0006] On the one hand, the present application provides a suspension device, including an axle assembly, a frame assembly, multiple elastic assemblies and multiple guide assemblies, and the specific solution is as follows.

[0007] The elastic component includes at least one elastic member, and multiple elastic members are arranged at intervals along the width direction of the frame assembly, and the two ends of the elastic member are rotatably connected to the frame assembly and the axle assembly respectively; the guide assembly includes multiple guide plates stacked along the height direction of the frame assembly, and the extension direction of the guide plates is perpendicular to the width direction of the frame assembly; wherein, multiple guide members are arranged at intervals along the width direction of the frame assembly and connected to the axle assembly, and any one of the two ends of the guide assembly is hinged to the frame assembly, and the other end is arranged at intervals with the frame assembly along the height direction of the frame assembly, and is in limited contact along the width direction of the frame assembly.

[0008] Beneficial effect: multiple elastic components are arranged at intervals along the width direction of the frame component, and the two ends of the elastic components are respectively rotatably connected to the frame component and the axle component to bear the vertical load applied by the frame component.

[0009] A guide assembly is also used, including multiple guide plates stacked along the height direction of the frame assembly, and the extension direction of the guide plates is perpendicular to the width direction of the frame assembly; multiple guide assemblies are arranged at intervals along the width direction of the frame assembly and connected to the axle assembly, and any one end of the guide assembly is hinged to the frame assembly, and the other end is arranged at intervals with the frame assembly along the height direction of the frame assembly, and is in limited contact along the width direction of the frame assembly, so that during the vehicle turning process, the guide assembly bears the lateral force between the frame assembly and the axle assembly; during the vehicle acceleration or deceleration process, it bears the force between the frame assembly and the axle assembly along the front and rear direction of the vehicle assembly.

[0010] The elastic component and the guide component respectively bear the vertical force and the longitudinal and lateral forces between the frame assembly and the axle assembly, thereby eliminating the need for a V-shaped thrust rod guide mechanism (there is an angle between the V-shaped thrust rod guide mechanism and the front-to-rear direction of the frame assembly, resulting in the V-shaped thrust rod guide mechanism occupying a larger chassis space) or a transverse thrust rod, thereby reducing the occupied chassis space. Furthermore, the frame assembly does not need to bear the force of the V-shaped thrust rod guide mechanism or the transverse thrust rod, thereby reducing the strength requirements of the frame assembly itself.

[0011] When the vehicle is traveling on a bumpy road, the axle assembly bounces up and down. Since one end of the guide assembly is suspended from the frame assembly, the guide assembly and the axle assembly both rotate around the hinge shaft of the guide assembly and the frame assembly. The guide assembly does not bear the load along the height direction of the frame assembly, that is, the guide assembly does not deform. Therefore, the suspension stiffness, frequency deviation and smoothness of the vehicle are all determined by the elastic assembly. When adjusting the suspension stiffness, frequency deviation and smoothness of the vehicle, it is only necessary to adjust the relevant parameters of the elastic assembly, without the need for a guide assembly. This can simplify the vehicle suspension adjustment process and improve the smoothness of the entire vehicle.

[0012] In an optional embodiment, a first hanging ear support and a second hanging ear support are provided on the frame assembly, a coiled ear is provided at one end of the guide assembly, the coiled ear is hinged to the first hanging ear support, the other end of the guide assembly passes through the second hanging ear support, the guide assembly is spaced apart from the second hanging ear support along the height direction of the frame assembly, and the guide assembly is in sliding contact with the second hanging ear support along the width direction of the frame assembly.

[0013] In an optional embodiment, the guide assembly further includes a plurality of ball bearings, the end portions of the guide assembly and the frame assembly are spaced apart, two adjacent guide plates are spaced apart, and a plurality of receiving grooves are provided between two adjacent guide plates, and at least one ball bearing is provided in the receiving groove.

[0014] In an optional embodiment, an opening is provided on the side of the accommodating groove facing the inner side wall of the second ear-hanging support, and a portion of the ball protrudes from the opening.

[0015] In an optional embodiment, the axle assembly includes an axle body and two steering knuckles, and the two steering knuckles are respectively connected to the two ends of the axle assembly through kingpins; there are two elastic components, and the two elastic components are respectively connected to the rotation axes of the two steering knuckles.

[0016] In an optional embodiment, the angle between the axis of the elastic member connected to the steering knuckle and the axis of the kingpin of the steering knuckle is in the range of 0 to 2°.

[0017] In an optional embodiment, a bracket is rotatably provided on the steering knuckle, a rotation axis of the bracket is coaxial with the axis of the kingpin, and the elastic member is hinged to the bracket.

[0018] In an optional embodiment, the elastic member is hinged to the frame assembly and the frame assembly; the direction of the hinge axis between the elastic member and the frame assembly is the same as the front-rear direction of the frame assembly; the direction of the hinge axis between the elastic member and the axle assembly is the same as the front-rear direction of the frame assembly; and / or the guide plate is a leaf spring; and / or the elastic member is an oil cylinder or a pneumatic cylinder.

[0019] In an optional embodiment, the frame assembly includes a first longitudinal beam and a second longitudinal beam, and the first longitudinal beam and the second longitudinal beam are connected to the axle assembly through one elastic component and one guide component, respectively.

[0020] On the other hand, the present application also provides an engineering machine, comprising: a suspension device as described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of this application or the technical solutions in related technologies, the following is a brief introduction to the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a schematic structural diagram of a suspension device according to an embodiment of the present application;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3This is a structural schematic diagram of a suspension device according to an embodiment of the present application without a frame assembly;

[0025] Figure 4 This is a schematic structural diagram of the cooperation between a guide assembly and a first hanging ear support and a second hanging ear support in a suspension device according to an embodiment of the present application;

[0026] Figure 5 This is a schematic structural diagram of a guide assembly in a suspension device according to an embodiment of the present application;

[0027] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0028] Description of reference numerals:

[0029] 1. Axle assembly; 2. Frame assembly; 3. Elastic assembly; 4. Guide assembly; 5. Pin;

[0030] 11. Axle body; 12. Steering knuckle; 121. Bracket; 13. Kingpin;

[0031] 21. First mounting bracket; 22. Second mounting bracket; 23. First longitudinal beam; 24. Second longitudinal beam;

[0032] 31. Elastic parts;

[0033] 41. Guide plate; 42. Ear; 43. Ball; 44. Accommodation groove; 441. Opening;

[0034] 51. Pin body; 52. Locking piece. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0036] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application. The terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two elements. The terms "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0037] Among related technologies, suspension is a vital component of the vehicle, playing many key roles in the operation of the vehicle, ensuring stability and safety during driving, while taking into account the control experience and comfort; its design and performance directly affect the overall performance of the vehicle and is one of the key technical links in automotive engineering.

[0038] Suspension types include leaf springs, hydro-pneumatics, and air suspensions. Due to the unique layout of some vehicles, a single leaf spring, hydro-pneumatic, or air suspension cannot meet the requirements, and a mixed arrangement may be required. For example, leaf springs can support vertical, longitudinal, and lateral forces, but their stiffness is not adjustable and their travel is limited. Hydro-pneumatic suspensions can only support vertical forces, with lateral forces primarily borne by V-type thrust rod guides or transverse thrust rods. However, these require a large chassis space and high frame strength.

[0039] In order to solve the above problems, the present application provides a suspension device and engineering machinery, which can reduce the occupied space, have lower requirements on the body strength, and improve the smoothness of the entire vehicle.

[0040] The following combination Figures 1 to 6 , describing the embodiments of the present application.

[0041] According to an embodiment of the present application, on the one hand, a suspension device is provided, such as Figure 1 As shown, it includes an axle assembly 1, a frame assembly 2, multiple elastic assemblies 3 and multiple guide assemblies 4, and the specific scheme is as follows.

[0042] like Figure 1 and Figure 3 As shown, the elastic component 3 includes at least one elastic member 31, that is, the elastic component 3 may include one or more elastic members 31; specifically, the elastic member 31 may be an oil cylinder or an air cylinder; multiple elastic components 3 are arranged at intervals along the width direction of the frame component 2, and the two ends of the elastic member 31 are respectively rotatably connected to the frame component 2 and the axle component 1 through a pin 5 or a universal joint.

[0043] More specifically, the elastic assembly 3 includes a plurality of elastic members 31 , and the plurality of elastic members 31 are arranged along the front-to-rear direction of the frame assembly 2 .

[0044] Specifically, not shown in the figure, multiple elastic components 3 are arranged at intervals along the width direction of the frame component 2, wherein the multiple elastic components 3 can be in two groups, symmetrically arranged along the symmetry plane in the width direction of the frame component 2, and each group of elastic components 3 includes at least one elastic component 3. If there are multiple elastic components 3, they are arranged at intervals along the width direction of the frame component 2.

[0045] like Figure 1 、 Figure 4 and Figure 5 As shown, the guide assembly 4 includes a plurality of guide plates 41 stacked along the height direction of the frame assembly 2, and the extension direction of the guide plates 41 is perpendicular to the width direction of the frame assembly 2; specifically, the guide plates 41 can be metal plates with elastic deformation.

[0046] Specifically, such as Figure 5 As shown, the number of elastic sheets in each guide component 4 is 2 to 8 sheets, specifically any one of 2 sheets, 3 sheets, 4 sheets, 5 sheets, 6 sheets, 7 sheets and 8 sheets or a range between any two values. Preferably, the number of elastic sheets in the guide component 4 is 3 or 4 sheets.

[0047] To be more specific, although not shown in the figures, the multiple guide plates 41 in the guide assembly 4 are circumferentially sleeved with at least one elastic member 31 in the front-to-rear direction of the frame assembly 2. The elastic member 31 can be a rubber ring, etc.; if there are multiple elastic members 31, the multiple elastic members 31 are spaced apart along the front-to-rear direction of the frame assembly 2.

[0048] The guide plate 41 can be a leaf spring or a plate made of other metal materials. Specifically, the elastic modulus of the leaf spring along the height direction of the frame assembly 2 is 1GPa to 250GPa, specifically any one of 1GPa, 10GPa, 20GPa, 30GPa, 40GPa, 50GPa, 60GPa, 70GPa, 80GPa, 90GPa, 100GPa, 110GPa, 120GPa, 130GPa, 140GPa, 150GPa, 160GPa, 170GPa, 180GPa, 190GPa, 200GPa, 210GPa, 220GPa, 230GPa, 240GPa and 250GPa, or the range between any two values.

[0049] It should be noted that, when the vehicle is in an unloaded state or in a state of a certain load (a load that the vehicle usually carries), the guide assembly 4 is in a non-deformed state.

[0050] Among them, such as Figure 1 As shown, multiple guide assemblies 4 are arranged at intervals along the width direction of the frame assembly 2 and are fixedly connected to the axle assembly 1 through U-bolts. At either end of the guide assembly 4, any one end is hinged to the frame assembly 2 through a pin 5, and the other end is arranged at intervals along the height direction of the frame assembly 2 and is in limited contact along the width direction of the frame assembly 2.

[0051] Specifically, such as Figure 1 and Figure 3 As shown, the end portion of the guide assembly 4 along the frame assembly 2 close to the front end of the frame assembly 2 is hinged to the frame assembly 2 through the pin shaft 5, and the other end of the guide assembly 4 is spaced apart from the frame assembly 2 along the height direction of the frame assembly 2, and is in limited contact along the width direction of the frame assembly 2; or, the end portion of the guide assembly along the frame assembly 2 close to the rear end of the frame assembly 2 is hinged to the frame assembly 2 through the pin shaft 5, and the other end of the guide assembly 4 is spaced apart from the frame assembly 2 along the height direction of the frame assembly 2, and is in limited contact along the width direction of the frame assembly 2.

[0052] In the specific use process, such as Figure 1As shown, taking a crane vehicle as an example, a lifting device is provided on the frame assembly 2, and the axle assembly 1 bears the load applied by the frame assembly 2 through multiple elastic assemblies 3; during the turning process of the vehicle, the frame assembly 2 will generate a lateral force along the width direction of the frame assembly 2 relative to the axle assembly 1. Since the guide assembly 4 is stacked along the height direction of the frame assembly 2, it can bear a sufficiently large lateral force.

[0053] During the acceleration or deceleration of the vehicle, the frame assembly 2 will generate a force along the front-to-rear direction of the frame assembly 2 relative to the axle assembly 1. Since the guide assembly 4 connects the axle assembly 1 and the frame assembly 2, the guide assembly 4 bears the force acting between the frame assembly 2 and the axle assembly 1 due to the acceleration or deceleration of the vehicle.

[0054] When the vehicle is traveling on a bumpy road and the axle assembly 1 bounces up and down, since one end of the guide assembly 4 is not fixedly connected to the frame assembly 2, the guide assembly 4 and the axle assembly 1 both rotate around the hinge shaft of the guide assembly 4 and the frame assembly 2 (in this process, the guide assembly 4 does not deform, or at least deforms slightly, and the force exerted on the frame assembly 2 is extremely small and can be ignored). The guide assembly 4 does not bear the load along the height direction of the frame assembly 2, so the suspension stiffness, frequency deviation and smoothness of the vehicle are determined by the characteristics of the elastic assembly 3. The vehicle suspension characteristics can be adjusted only by adjusting the relevant parameters of the elastic assembly 3.

[0055] In this embodiment, Figures 1 to 5 As shown, multiple elastic components 3 are arranged at intervals along the width direction of the frame component 2, and the two ends of the elastic member 31 are respectively rotatably connected to the frame component 2 and the axle component 1 to bear the vertical load applied by the frame component 2.

[0056] A guide assembly 4 is also used, which includes multiple guide plates 41 stacked along the height direction of the frame assembly 2, and the extension direction of the guide plates 41 is perpendicular to the width direction of the frame assembly 2; multiple guide assemblies 4 are arranged at intervals along the width direction of the frame assembly 2 and are connected to the axle assembly 1. At both ends of the guide assembly 4, any one end is hinged to the frame assembly 2, and the other end is arranged at intervals along the height direction of the frame assembly 2, and is in limited contact along the width direction of the frame assembly 2, so that during the vehicle turning process, the guide assembly 4 bears the lateral force between the frame assembly 2 and the axle assembly 1; during the vehicle acceleration or deceleration process, it bears the force between the frame assembly 2 and the axle assembly 1 along the front and rear direction of the vehicle assembly.

[0057] The elastic component 3 and the guide component 4 bear the vertical force and the longitudinal and lateral forces between the frame component 2 and the axle component 1 respectively, so there is no need to arrange a V-type thrust rod guide mechanism (there is an angle between the V-type thrust rod guide mechanism and the front-to-back direction of the frame component 2, which causes the V-type thrust rod guide mechanism to occupy a larger chassis space) or a transverse thrust rod, which can reduce the occupied chassis space, and the frame component 2 does not need to bear the force of the V-type thrust rod guide mechanism or the transverse thrust rod, thereby reducing the strength requirement of the frame component 2 itself.

[0058] When the vehicle is traveling on a bumpy road, the axle assembly 1 bounces up and down. Since one end of the guide assembly 4 is not fixedly connected to the frame assembly 2, the guide assembly 4 and the axle assembly 1 both rotate around the hinge axis of the guide assembly 4 and the frame assembly 2. The guide assembly 4 does not bear the load along the height direction of the frame assembly 2, that is, the guide assembly 4 does not deform. Therefore, the suspension stiffness, frequency deviation and smoothness of the vehicle are all determined by the elastic assembly 3. When adjusting the vehicle suspension stiffness, frequency deviation and smoothness, it is only necessary to adjust the relevant parameters of the elastic assembly 3, without the guide assembly 4. This can simplify the vehicle suspension adjustment process and improve the smoothness of the entire vehicle.

[0059] In some embodiments not shown, the elastic component 3 is rotationally connected to the frame component 2 or the axle component 1 via a spherical universal joint.

[0060] In one embodiment, Figure 3 and Figure 4 As shown, the frame assembly 2 is provided with a first hanging ear support 21 and a second hanging ear support 22. Specifically, the first hanging ear support 21 and the second hanging ear support 22 are both welded from metal plates; one end of the guide assembly 4 is provided with a coiled ear 42, and the coiled ear 42 is hinged to the first hanging ear support 21 through a pin shaft 5. The other end of the guide assembly 4 passes through the second hanging ear support 22. The guide assembly 4 is spaced apart from the second hanging ear support 22 along the height direction of the frame assembly 2, and the guide assembly 4 is in sliding contact with the second hanging ear support 22 along the width direction of the frame assembly 2.

[0061] Specifically, such as Figure 4 As shown, the spacing between the guide assembly 4 and the inner top surface and inner bottom surface of the second hanging ear support 22 along the vehicle height direction is 80mm to 120mm, specifically any one of 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm and 120mm or the range between any two values, preferably 100mm.

[0062] Specifically, such as Figure 4 As shown, the first hanging ear support 21 and the second hanging ear support 22 are both box bodies with openings 441 on both sides along the front-to-back direction of the frame assembly 2 .

[0063] In this embodiment, if Figure 4 As shown, the guide assembly 4 is connected to the frame assembly 2 through the first hanging ear support 21 and the second hanging ear support 22. The solution is simple and easy to manufacture.

[0064] In one embodiment, Figure 5 and Figure 6 As shown, the guide assembly 4 also includes a plurality of balls 43. The ends of the guide assembly 4 and the frame assembly 2 are spaced apart, and two adjacent guide plates 41 are spaced apart. There are also a plurality of receiving grooves 44 between the two adjacent guide plates 41, and at least one ball 43 is provided in the receiving groove 44.

[0065] Specifically, the accommodating groove 44 may be provided on any one of the two adjacent guide plates 41 , or both of the two adjacent guide plates 41 may be provided with a groove, and the two grooves are correspondingly provided to form the accommodating groove 44 .

[0066] In the specific use process, such as Figure 5 and Figure 6 As shown, when the guide plate 41 is deformed up and down due to external factors (such as friction with the second hanging ear support 22 or the load capacity of the frame assembly 2 is too large, causing the second hanging ear support 22 to press down on the guide assembly 4), the setting of the accommodating groove 44 and the ball 43 can reduce the friction between the two adjacent guide plates 41 and reduce abnormal noise.

[0067] In this embodiment, if Figure 6 As shown, by providing a receiving groove 44 between two adjacent guide plates 41 , and providing at least one ball 43 in the receiving groove 44 , the friction loss and abnormal friction noise between the two adjacent guide plates 41 can be reduced.

[0068] In some embodiments not shown, the balls 43 may be replaced with rollers.

[0069] In one embodiment, Figure 6 As shown, an opening 441 is provided on the side of the accommodating groove 44 facing the inner side wall of the second hanging ear support 22 , and a portion of the ball 43 protrudes from the opening 441 .

[0070] Specifically, the area of ​​the opening 441 of the side wall of the accommodating groove 44 can be smaller than the cross section of the accommodating groove 44 along the width direction of the frame assembly 2, so as to limit the ball 43; alternatively, the area of ​​the opening 441 of the side wall of the accommodating groove 44 can be equal to the cross section of the accommodating groove 44 along the width direction of the frame assembly 2.

[0071] In the specific use process, such as Figure 6As shown, when the frame assembly 2 bounces up and down, the guide assembly 4 will rub against the second hook support 22, and the side of the accommodating groove 44 facing the inner wall of the second hook support 22 is provided with an opening 441, and a part of the ball 43 protrudes from the opening 441 and can make rolling contact with the inner wall of the second hook support 22.

[0072] In this embodiment, an opening 441 is provided on the side of the accommodating groove 44 facing the inner wall of the second hanging ear support 22, and a portion of the ball 43 protrudes from the opening 441, so that the guide component 4 can be in rolling contact with the inner wall of the second hanging ear support 22, thereby reducing the friction loss of the guide component 4 and abnormal noise.

[0073] In one embodiment, Figure 1 and Figure 3 As shown, the axle assembly 1 includes an axle body 11 and two steering knuckles 12, and the two steering knuckles 12 are rotatably connected to the two ends of the axle assembly 1 through kingpins 13; there are two elastic components 3, and the two elastic components 3 are respectively connected to the rotation axes of the two steering knuckles 12.

[0074] Specifically, such as Figure 1 and Figure 3 As shown, the portion where the elastic component 3 is connected to the frame component 2 is located on the outside of the frame component 2, and the two ends of the elastic member 31 can rotate relative to each other around the axial direction of the elastic member 31. The elastic component 3 is connected to the steering knuckle 12, which can make the elastic component 3 form a certain inclination, that is, it is set at an angle with the height direction of the frame component 2.

[0075] In this embodiment, two elastic components 3 are used, and the two elastic components 3 are respectively connected to two steering knuckles 12, so that the elastic components 3 can form a certain inclination to increase the length of the elastic components 3 in the width direction of the frame component 2, thereby reducing the rollover risk of the suspension device and improving the driving stability of the suspension system.

[0076] In one embodiment, Figure 1 As shown, the axis of the elastic member 31 connected to the steering knuckle 12 includes an angle in the range of 0 to 2° with the axis of the kingpin 13 of the steering knuckle 12, specifically any one of 0°, 0.5°, 1°, 1.5° and 2° or a range between any two values, preferably 0°, and the axis of the elastic member 31 is arranged to coincide with the axis of the kingpin 13.

[0077] Specifically, the included angle between the kingpin 13 and the frame assembly 2 in the height direction is 7.5°, which is used to improve the anti-rollover capability of the suspension device.

[0078] In this embodiment, Figure 1 and Figure 3As shown, the axis of the elastic member 31 connected to the steering knuckle 12 includes an angle of 0 to 2° with the axis of the kingpin 13 of the steering knuckle 12, which can make the inclination trends of the axis of the elastic member 31 and the axis of the kingpin 13 basically the same, thereby improving the anti-rollover capability of the suspension device.

[0079] In one embodiment, Figure 3 As shown, a bracket 121 is rotatably provided on the steering knuckle 12 , the rotation axis of the bracket 121 is coaxial with the axis of the main pin 13 , and the elastic member 31 is hinged to the bracket 121 via the pin 5 .

[0080] Specifically, the bracket 121 is a U-shaped bracket 121, and may also be a bracket 121 of other shapes.

[0081] In this embodiment, if Figure 3 As shown, by rotatably setting the bracket 121 on the steering knuckle 12 to hinge with the elastic member 31 , it is possible to prevent the elastic member 31 from swinging when the steering knuckle 12 rotates, thereby preventing forces in other directions from affecting the service life of the elastic member 31 .

[0082] In one embodiment, Figure 1 and Figure 3 As shown, the elastic member 31 and the frame assembly 2 are hinged through the pin shaft 5; the direction of the hinge axis of the elastic member 31 and the frame assembly 2 is the same as the front-to-back direction of the frame assembly 2; the direction of the hinge axis of the elastic member 31 and the axle assembly 1 is the same as the front-to-back direction of the frame assembly 2; the structure is simple and easy to assemble.

[0083] The guide plate 41 is a leaf spring. Specifically, some leaf springs with a low elastic modulus can be used as long as they can play a guiding role.

[0084] like Figure 1 and Figure 2 As shown, the pin shaft 5 includes a pin body 51 and a locking member 52. A groove is provided on one end face of the pin body 51. A portion of the locking member 52 is adapted to be snap-fitted into the groove on the pin body 51. The locking member 52 is fixedly connected to the component rotatably connected to the pin shaft 5 by a bolt to prevent the pin body 51 from rotating.

[0085] In one embodiment, Figure 1 As shown, the frame assembly 2 includes a first longitudinal beam 23 and a second longitudinal beam 24. The first longitudinal beam 23 and the second longitudinal beam 24 are connected by multiple cross beams. The first longitudinal beam 23 and the second longitudinal beam 24 are respectively connected to the axle assembly 1 via an elastic component 3 and a guide component 4. The elastic component 3 connected to the first longitudinal beam 23 and the elastic component 3 connected to the second longitudinal beam 24 are arranged symmetrically along the center plane of the frame assembly 2 in the width direction.

[0086] The overall solution of this application is described below with an embodiment.

[0087] According to an embodiment of the present application, on the one hand, a suspension device is provided, such as Figure 1 As shown, it includes an axle assembly 1, a frame assembly 2, multiple elastic assemblies 3 and multiple guide assemblies 4, and the specific scheme is as follows.

[0088] like Figure 1 As shown, the frame assembly 2 includes a first longitudinal beam 23 and a second longitudinal beam 24. The first longitudinal beam 23 and the second longitudinal beam 24 are connected by multiple cross beams. The first longitudinal beam 23 and the second longitudinal beam 24 are respectively connected to the axle assembly 1 via an elastic component 3 and a guide component 4. The elastic component 3 connected to the first longitudinal beam 23 and the elastic component 3 connected to the second longitudinal beam 24 are arranged symmetrically along the center plane of the frame assembly 2 in the width direction.

[0089] like Figure 1 and Figure 3 As shown, the elastic component 3 includes at least one elastic member 31, that is, the elastic component 3 may include one or more elastic members 31; specifically, the elastic member 31 may be an oil cylinder or an air cylinder; multiple elastic components 3 are arranged at intervals along the width direction of the frame component 2, and the two ends of the elastic member 31 are respectively rotatably connected to the frame component 2 and the axle component 1 through a pin 5 or a universal joint.

[0090] More specifically, the elastic assembly 3 includes a plurality of elastic members 31 , and the plurality of elastic members 31 are arranged along the front-to-rear direction of the frame assembly 2 .

[0091] Specifically, not shown in the figure, multiple elastic components 3 are arranged at intervals along the width direction of the frame component 2, wherein the multiple elastic components 3 can be in two groups, symmetrically arranged along the symmetry plane in the width direction of the frame component 2, and each group of elastic components 3 includes at least one elastic component 3. If there are multiple elastic components 3, they are arranged at intervals along the width direction of the frame component 2.

[0092] like Figure 1 、 Figure 4 and Figure 5 As shown, the guide assembly 4 includes a plurality of guide plates 41 stacked along the height direction of the frame assembly 2, and the extension direction of the guide plates 41 is perpendicular to the width direction of the frame assembly 2; specifically, the guide plates 41 can be metal plates with elastic deformation.

[0093] Specifically, such as Figure 5 As shown, the number of elastic sheets in each guide component 4 is 2 to 8 sheets, specifically any one of 2 sheets, 3 sheets, 4 sheets, 5 sheets, 6 sheets, 7 sheets and 8 sheets or a range between any two values. Preferably, the number of elastic sheets in the guide component 4 is 3 or 4 sheets.

[0094] To be more specific, although not shown in the figures, the multiple guide plates 41 in the guide assembly 4 are circumferentially sleeved with at least one elastic member 31 in the front-to-rear direction of the frame assembly 2. The elastic member 31 can be a rubber ring, etc.; if there are multiple elastic members 31, the multiple elastic members 31 are spaced apart along the front-to-rear direction of the frame assembly 2.

[0095] The elastic modulus of the guide plate 41 along the height direction of the frame assembly 2 is 1 GPa to 250 GPa, specifically any one of 1 GPa, 10 GPa, 20 GPa, 30 GPa, 40 GPa, 50 GPa, 60 GPa, 70 GPa, 80 GPa, 90 GPa, 100 GPa, 110 GPa, 120 GPa, 130 GPa, 140 GPa, 150 GPa, 160 GPa, 170 GPa, 180 GPa, 190 GPa, 200 GPa, 210 GPa, 220 GPa, 230 GPa, 240 GPa and 250 GPa, or a range between any two of the values.

[0096] Among them, such as Figure 1 As shown, multiple guide assemblies 4 are arranged at intervals along the width direction of the frame assembly 2 and are fixedly connected to the axle assembly 1 through U-bolts. At either end of the guide assembly 4, any one end is hinged to the frame assembly 2 through a pin 5, and the other end is arranged at intervals along the height direction of the frame assembly 2 and is in limited contact along the width direction of the frame assembly 2.

[0097] Specifically, such as Figure 1 and Figure 3 As shown, the end portion of the guide assembly 4 along the frame assembly 2 close to the front end of the frame assembly 2 is hinged to the frame assembly 2 through the pin shaft 5, and the other end of the guide assembly 4 is spaced apart from the frame assembly 2 along the height direction of the frame assembly 2, and is in limited contact along the width direction of the frame assembly 2; or, the end portion of the guide assembly along the frame assembly 2 close to the rear end of the frame assembly 2 is hinged to the frame assembly 2 through the pin shaft 5, and the other end of the guide assembly 4 is spaced apart from the frame assembly 2 along the height direction of the frame assembly 2, and is in limited contact along the width direction of the frame assembly 2.

[0098] More specifically, Figure 3 and Figure 4 As shown, the frame assembly 2 is provided with a first hanging ear support 21 and a second hanging ear support 22. Specifically, the first hanging ear support 21 and the second hanging ear support 22 are both welded from metal plates; one end of the guide assembly 4 is provided with a coiled ear 42, and the coiled ear 42 is hinged to the first hanging ear support 21 through a pin shaft 5. The other end of the guide assembly 4 passes through the second hanging ear support 22. The guide assembly 4 is spaced apart from the second hanging ear support 22 along the height direction of the frame assembly 2, and the guide assembly 4 is in sliding contact with the second hanging ear support 22 along the width direction of the frame assembly 2.

[0099] Specifically, such as Figure 4 As shown, the spacing between the guide assembly 4 and the inner top surface and inner bottom surface of the second hanging ear support 22 along the vehicle height direction is 80mm to 120mm, specifically any one of 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm and 120mm or the range between any two values, preferably 100mm.

[0100] Specifically, such as Figure 4 As shown, the first hanging ear support 21 and the second hanging ear support 22 are both box bodies with openings 441 on both sides along the front-to-back direction of the frame assembly 2 .

[0101] More specifically, Figure 5 and Figure 6 As shown, the guide assembly 4 also includes a plurality of balls 43. The ends of the guide assembly 4 and the frame assembly 2 are spaced apart, and two adjacent guide plates 41 are spaced apart. There are also a plurality of receiving grooves 44 between the two adjacent guide plates 41, and at least one ball 43 is provided in the receiving groove 44.

[0102] Specifically, the accommodating groove 44 may be provided on any one of the two adjacent guide plates 41 , or both of the two adjacent guide plates 41 may be provided with a groove, and the two grooves are correspondingly provided to form the accommodating groove 44 .

[0103] More specifically, Figure 6 As shown, an opening 441 is provided on the side of the accommodating groove 44 facing the inner side wall of the second hanging ear support 22 , and a portion of the ball 43 protrudes from the opening 441 .

[0104] Specifically, the area of ​​the opening 441 of the side wall of the accommodating groove 44 can be smaller than the cross section of the accommodating groove 44 along the width direction of the frame assembly 2, so as to limit the ball 43; alternatively, the area of ​​the opening 441 of the side wall of the accommodating groove 44 can be equal to the cross section of the accommodating groove 44 along the width direction of the frame assembly 2.

[0105] More specifically, Figure 1 and Figure 3 As shown, the axle assembly 1 includes an axle body 11 and two steering knuckles 12, and the two steering knuckles 12 are rotatably connected to the two ends of the axle assembly 1 through kingpins 13; there are two elastic components 3, and the two elastic components 3 are respectively connected to the rotation axes of the two steering knuckles 12.

[0106] Specifically, such as Figure 1 and Figure 3As shown, the portion where the elastic component 3 is connected to the frame component 2 is located on the outside of the frame component 2, and the two ends of the elastic member 31 can rotate relative to each other around the axial direction of the elastic member 31. The elastic component 3 is connected to the steering knuckle 12, which can make the elastic component 3 form a certain inclination, that is, it is set at an angle with the height direction of the frame component 2.

[0107] More specifically, Figure 1 As shown, the axis of the elastic member 31 connected to the steering knuckle 12 includes an angle in the range of 0 to 2° with the axis of the kingpin 13 of the steering knuckle 12, specifically any one of 0°, 0.5°, 1°, 1.5° and 2° or a range between any two values, preferably 0°, and the axis of the elastic member 31 is arranged to coincide with the axis of the kingpin 13.

[0108] Specifically, the included angle between the kingpin 13 and the frame assembly 2 in the height direction is 7.5°, which is used to improve the anti-rollover capability of the suspension device.

[0109] More specifically, Figure 3 As shown, a bracket 121 is rotatably provided on the steering knuckle 12 , the rotation axis of the bracket 121 is coaxial with the axis of the main pin 13 , and the elastic member 31 is hinged to the bracket 121 via the pin 5 .

[0110] Specifically, the bracket 121 is a U-shaped bracket 121, and may also be a bracket 121 of other shapes.

[0111] More specifically, Figure 1 and Figure 3 As shown, the elastic member 31 and the frame assembly 2 are hinged through the pin shaft 5; the direction of the hinge axis of the elastic member 31 and the frame assembly 2 is the same as the front-to-back direction of the frame assembly 2; the direction of the hinge axis of the elastic member 31 and the axle assembly 1 is the same as the front-to-back direction of the frame assembly 2; the structure is simple and easy to assemble.

[0112] The guide plate 41 is a leaf spring. Specifically, some leaf springs with a low elastic modulus can be used as long as they can play a guiding role.

[0113] like Figure 1 and Figure 2 As shown, the pin shaft 5 includes a pin body 51 and a locking member 52. A groove is provided on one end face of the pin body 51. A portion of the locking member 52 is adapted to be snap-fitted into the groove on the pin body 51. The locking member 52 is fixedly connected to the component rotatably connected to the pin shaft 5 by a bolt to prevent the pin body 51 from rotating.

[0114] According to an embodiment of the present application, on the other hand, there is provided an engineering machine comprising: the suspension device in any one of the above embodiments.

[0115] Specifically, the construction machinery may be various vehicles with chassis, such as cranes.

[0116] In this embodiment, since the engineering machinery includes a suspension device, it has the same technical effects as the suspension device and will not be described in detail here.

[0117] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A suspension device, characterized in that: include: Axle assembly (1); Frame assembly (2); A plurality of elastic components (3), each of the elastic components (3) comprising at least one elastic member (31), the plurality of elastic components (3) being spaced apart along the width direction of the frame component (2), and the two ends of the elastic member (31) being rotatably connected to the frame component (2) and the axle component (1), respectively; A plurality of guide assemblies (4), wherein the guide assemblies (4) include a plurality of guide plates (41) stacked along the height direction of the frame assembly (2), and the extension direction of the guide plates (41) is perpendicular to the width direction of the frame assembly (2); Wherein, a plurality of guide assemblies (4) are arranged at intervals along the width direction of the frame assembly (2) and are connected to the axle assembly (1); at either end of the guide assembly (4), any one end is hinged to the frame assembly (2), and the other end is arranged at intervals along the height direction of the frame assembly (2) and is in limited contact along the width direction of the frame assembly (2).

2. The suspension device according to claim 1, characterized in that The frame assembly (2) is provided with a first hanging ear support (21) and a second hanging ear support (22); one end of the guide assembly (4) is provided with a coiled ear (42), the coiled ear (42) is hinged to the first hanging ear support (21), the other end of the guide assembly (4) passes through the second hanging ear support (22), the guide assembly (4) is spaced apart from the second hanging ear support (22) along the height direction of the frame assembly (2), and the guide assembly (4) is in sliding contact with the second hanging ear support (22) along the width direction of the frame assembly (2).

3. The suspension device according to claim 2, characterized in that The guide assembly (4) further includes a plurality of balls (43), the end portions of the guide assembly (4) and the frame assembly (2) are spaced apart, two adjacent guide plates (41) are spaced apart, and a plurality of receiving grooves (44) are provided between the two adjacent guide plates (41), and at least one ball (43) is provided in the receiving groove (44).

4. The suspension device according to claim 3, characterized in that An opening (441) is provided on the side of the accommodating groove (44) facing the inner side wall of the second hanging ear support (22), and a portion of the ball (43) protrudes from the opening (441).

5. The suspension device according to any one of claims 1 to 4, characterized in that: The axle assembly (1) comprises an axle body (11) and two steering knuckles (12), wherein the two steering knuckles (12) are rotatably connected to two ends of the axle assembly (1) via kingpins (13). There are two elastic components (3), and the two elastic components (3) are respectively connected to the rotation axes of the two steering knuckles (12).

6. The suspension device according to claim 5, characterized in that The angle between the axis of the elastic member (31) connected to the steering knuckle (12) and the axis of the main pin (13) of the steering knuckle (12) is in the range of 0 to 2 degrees.

7. The suspension device according to claim 5, characterized in that A bracket (121) is rotatably provided on the steering knuckle (12), the rotation axis of the bracket (121) is coaxial with the axis of the kingpin (13), and the elastic member (31) is hinged to the bracket (121).

8. The suspension device according to any one of claims 1 to 4, characterized in that: The elastic member (31) is hinged to the frame assembly (2) and the frame assembly (2); the hinge axis direction of the elastic member (31) and the frame assembly (2) is the same as the front-rear direction of the frame assembly (2); the hinge axis direction of the elastic member (31) and the axle assembly (1) is the same as the front-rear direction of the frame assembly (2); And / or, the guide plate (41) is a leaf spring; And / or, the elastic member (31) is an oil cylinder or a gas cylinder.

9. The suspension device according to any one of claims 1 to 4, characterized in that: The frame assembly (2) comprises a first longitudinal beam (23) and a second longitudinal beam (24), wherein the first longitudinal beam (23) and the second longitudinal beam (24) are respectively connected to the axle assembly (1) via an elastic assembly (3) and a guide assembly (4).

10. An engineering machine, characterized in that: include: A suspension device as claimed in any one of claims 1 to 9.

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