CN213831264U - Double-front-axle suspension system, crane chassis and automobile crane - Google Patents
Double-front-axle suspension system, crane chassis and automobile crane Download PDFInfo
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- CN213831264U CN213831264U CN202022610335.9U CN202022610335U CN213831264U CN 213831264 U CN213831264 U CN 213831264U CN 202022610335 U CN202022610335 U CN 202022610335U CN 213831264 U CN213831264 U CN 213831264U
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Abstract
The utility model provides a two front axle suspension systems, crane chassis and mobile crane, two front axle suspension systems include frame, first axle, second axle, leaf spring suspension and air suspension, and first axle is located the place ahead of second axle, and first axle passes through leaf spring suspension and connected to the frame, and the second axle passes through air suspension and connected to the frame, perhaps first axle passes through air suspension and connected to the frame, and the second axle passes through leaf spring suspension and connected to the frame. The utility model discloses two axles of two front axle suspension systems adopt leaf spring suspension and air suspension respectively, and air suspension compact structure, occupation space is less, makes the leaf spring suspension have more installation space, and leaf spring's effect length can increase, improves hoist ride comfort and travelling comfort when satisfying bearing capacity.
Description
Technical Field
The utility model relates to a hoist technical field particularly, relates to a two front axle suspension systems, crane chassis and mobile crane.
Background
The automobile crane is a common crane form, has the advantages of good maneuverability and rapid transfer, and is widely used. The frame and the axle of the automobile crane are connected through the suspension, the suspension is used for transmitting force and moment acting between the wheels and the frame, impact load transmitted to the frame from a road surface is relieved, vibration of a bearing system caused by the impact load is attenuated, the wheels are guaranteed to keep ideal motion characteristics when the road surface is uneven and the load changes, and the driving smoothness and the operation stability of the crane are improved.
The existing automobile crane double-front-axle type is provided with two front axles, and each front axle respectively adopts a group of plate spring suspension. However, the frame structure of the crane is special, the leg box is arranged, the leg box is close to the axle, the arrangement space of the plate spring suspension is affected, the action length of a plate spring of the plate spring suspension of the automobile crane of the double front axle type is shortened, and the bearing capacity is reduced. In order to meet the bearing requirement of the jack, the rigidity of the steel plate spring can only be increased, so that the damping capacity of the suspension is reduced, the automobile crane runs unsmoothly, the comfort is poor, and the axle load between the two axles is not easy to balance.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem how to improve two front axle mobile crane's ride comfort and travelling comfort.
In order to solve the problem, the utility model provides a two front axle suspension systems, including frame, first axle, second axle, leaf spring suspension and air suspension, first axle is located the place ahead of second axle, first axle passes through leaf spring suspension with connected to the vehicle frame, the second axle passes through air suspension with connected to the vehicle frame, perhaps
The first axle is connected to the frame via the air suspension, and the second axle is connected to the frame via the leaf spring suspension.
Compared with the prior art, the utility model discloses an axle of two front axle suspension systems adopts the leaf spring suspension, and another axle adopts air suspension, has replaced two axles of traditional two front axle motorcycle types and has all adopted the technical scheme of leaf spring suspension, and the air suspension travelling comfort is good, and compact structure, and occupation space is less, makes the leaf spring suspension have bigger installation space, and leaf spring's effect length can increase, improves hoist ride comfort and travelling comfort when satisfying bearing capacity.
In a preferred or optional embodiment, the air suspension includes a guide bracket, a guide plate, a second shock absorber, and the air spring, the guide bracket is mounted on the frame, the front end of the guide plate is hinged to the guide bracket, the guide plate is connected to the first axle or the second axle, the upper and lower ends of the air spring are respectively connected to the frame and the guide plate, and the upper and lower ends of the second shock absorber are respectively connected to the frame and the guide plate.
From this, the air suspension of two front axle suspension systems simple structure, occupation space is little, and the travelling comfort is high, can improve the ride comfort, the travelling comfort of hoist and control stability and the security of going.
In a preferred or alternative embodiment, the plate spring suspension includes a front bracket, a rear bracket, a first shock absorber, and the plate spring, the front bracket and the rear bracket are mounted on the vehicle frame, a front end of the plate spring is hinged to the front bracket, a rear end of the plate spring is slidably connected to the rear bracket, the plate spring is connected to the first axle or the second axle, and upper and lower ends of the first shock absorber are respectively connected to the vehicle frame and the plate spring.
From this, two front axle suspension system's leaf spring suspension simple structure, rationally distributed, space utilization is high, can increase leaf spring's effect length as far as possible, improves hoist ride comfort and travelling comfort when satisfying bearing capacity.
In a preferred or alternative embodiment, the projected length of the leaf spring suspension on the frame is greater than the projected length of the air suspension on the frame.
From this, the air suspension among the two front axle suspension systems occupation space is little, has saved installation space for leaf spring suspension, makes leaf spring can improve bearing capacity through the mode that increases effect length, need not increase rigidity to improve leaf spring suspension's shock-absorbing capacity, increase mobile crane's travelling comfort.
In a preferred or alternative embodiment, the leaf spring has an active length of 1500mm to 1600 mm.
From this, the utility model discloses leaf spring suspension leaf spring's of two front axle suspension systems active length is longer than leaf spring suspension's among the prior art active length, and leaf spring's bearing capacity improves, and mobile crane goes more smoothly, and the travelling comfort promotes.
In a preferred or alternative embodiment, the guide plate comprises at least two steel plate springs stacked together.
Therefore, the guide plate has certain elasticity, the axle connected with the air suspension frame can be transferred to the guide plate after being vibrated, and the guide plate plays the roles of traction and guidance and transfers the vibration to the air spring.
In a preferred or alternative embodiment, the air suspension comprises a height adjustment mechanism for adjusting the height of an axle connected to the air suspension.
Therefore, the axle connected with the air suspension can be adjusted to a proper height through calibration, so that the axle load between the two axles is uniform, and the service life of the double-front-axle suspension system is prolonged.
The utility model also provides a crane chassis, including foretell two front axle suspension systems.
Compared with the prior art, the utility model discloses the crane chassis has two front axle suspension systems, and two axles adopt leaf spring suspension and air suspension respectively, and air suspension compact structure, occupation space is less, makes the leaf spring suspension have more installation space, through the effect length of extension leaf spring, improves the travelling comfort of hoist when satisfying bearing capacity.
In a preferred or alternative embodiment, the crane undercarriage further comprises a leg box located at the rear side of the second axle, the leg box having a clearance with the suspension of the second axle.
Therefore, the suspension of the axle has a certain distance with the leg box, and the use of the support leg is not interfered.
The utility model also provides an automobile crane, including foretell crane chassis.
The utility model discloses mobile crane is the same with above-mentioned hoist chassis for prior art's advantage, no longer gives unnecessary details here.
Drawings
FIG. 1 is a front structural view of a crane chassis according to an embodiment of the present invention;
fig. 2 is a structural view of a leaf spring suspension according to an embodiment of the present invention;
fig. 3 is a structural diagram of an air suspension according to an embodiment of the present invention.
Description of reference numerals:
1-vehicle frame, 2-first vehicle axle, 3-second vehicle axle, 4-leg box, 5-plate spring suspension, 51-front bracket, 52-rear bracket, 53-first shock absorber, 54-steel plate spring, 55-first fixed bracket, 56-limiting plate, 6-air suspension, 61-guide bracket, 62-guide plate, 63-second shock absorber, 64-air spring and 65-second fixed bracket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. The utility model discloses a be provided with coordinate system XY in the drawing of embodiment, wherein the place ahead is represented to the forward of X axle, and the rear is represented to the reverse of X axle, and the top is represented to the forward of Y axle, and the below is represented to the reverse of Y axle.
Furthermore, in the description of the present invention, it should be noted that the terms "first" and "second" mentioned in the embodiments of the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
An embodiment of the utility model provides a mobile crane, it is good to have mobility, shifts rapid advantage. The mobile crane in this embodiment is a double-front-axle vehicle type, and the double-front axle is the first vehicle axle 2 and the second vehicle axle 3 respectively, and it is simple and convenient to operate, and low in manufacturing cost can keep turning to stably under the heavy load working condition, and is little to the road surface damage moreover.
The automobile crane has a crane chassis, as shown in fig. 1 to 3, the crane chassis includes a leg box 4 and a double front axle suspension system, the double front axle suspension system includes a frame 1, a first axle 2, a second axle 3, a leaf spring suspension 5 and an air suspension 6, the first axle 2 is located in front of the second axle 3, and the leg box 4 is disposed behind the second axle 3.
The leg box 4 is used to house a leg, which is one of the main components of the automobile crane. In the hoisting of the automobile crane, the support legs extend out of the support leg box 4, so that the support base of the crane is increased, the tire load is reduced, and the anti-overturning stability of the whole automobile is improved, thereby improving the hoisting capacity; after the hoisting operation is finished, the supporting legs are recovered to the supporting leg box, and the automobile crane can normally run.
The first vehicle axle 2 is connected to the vehicle frame 1 via a leaf spring suspension 5, the elastic element of the leaf spring suspension 5 being a leaf spring 54, the second vehicle axle 3 being connected to the vehicle frame 1 via an air suspension 6, the elastic element of the air suspension 6 being an air spring 64.
The second axle 3 of the double-front-axle suspension system adopts the air suspension 6, the comfort is good, the structure is compact, the occupied space is small, the plate spring suspension 5 connected with the first axle 2 has larger installation space, and the action length of the plate spring 54 can be increased. Leaf spring 54's active length is leaf spring 54 straightens the distance between the back both ends fixed point, and the bearing capacity and the shock attenuation performance of leaf spring suspension 5 can be improved to the active length that increases leaf spring 54 to make leaf spring suspension 5 improve the ride comfort and the travelling comfort of hoist when satisfying bearing capacity.
As shown in fig. 1, the projected length of leaf spring suspension 5 on vehicle frame 1 is greater than the projected length of air suspension 6 on vehicle frame 1. The space that air suspension 6 took is less, has saved installation space for leaf spring suspension 5, makes leaf spring 54 can improve bearing capacity through the mode that increases action length, and need not increase leaf spring 54's rigidity, consequently for the leaf spring suspension that the two front axle motorcycle types of prior art used, leaf spring suspension 5 in this embodiment has better buffering shock attenuation performance.
Further, leaf spring 54's active length is 1500mm in this embodiment, and leaf spring's active length has increased about 200mm compared in prior art leaf spring's leaf spring, and leaf spring 54's bearing capacity improves, and the mobile crane goes more smoothly, and the travelling comfort promotes.
In other embodiments, the active length of the leaf spring 54 is between 1500mm and 1600mm, and the leaf spring 54 can be arranged according to the chassis structure, so that the active length is increased, the bearing requirement is met, and the comfort is improved.
As shown in fig. 1, the air suspension 6 connected to the second axle 3 has a gap with the leg box 4, and the legs in the leg box 4 can be freely extended and contracted without interfering with the suspension. And the suspension has certain distance with the landing leg box 4, so that the landing leg box 4 can be conveniently overhauled.
As shown in fig. 2, the leaf spring suspension 5 of the double front axle suspension system includes a front bracket 51, a rear bracket 52, a first shock absorber 53, a first fixing bracket 55, a stopper plate 56, and a leaf spring 54.
A front bracket 51 and a rear bracket 52 are mounted on the frame 1, the front bracket 51 being located forward of the rear bracket 52 for securing a leaf spring 54. The front end of the leaf spring 54 is provided with a rolling lug which is hinged with the front bracket 51, and the rear end of the leaf spring 54 is connected with the rear bracket 52 in a sliding way.
The leaf spring 54 is an elastic element of the leaf spring suspension 5, and the leaf spring 54 is composed of at least two stacked leaf springs, and the leaf spring 54 includes 10 leaf springs in this embodiment. The leaf springs stacked from top to bottom are reduced in length, and a fixing bolt penetrates through the stacked leaf springs and fixedly connects the entire leaf spring 54 to the first axle 2.
The first fixing bracket 55 is installed on the frame 1, the upper end of the first shock absorber 53 is hinged with the first fixing bracket 55, and the lower end of the first shock absorber 53 is connected with the leaf spring 54. The first shock absorber 53 can alleviate road surface impact, quickly absorb shock generated by wheel jolt, and enable the vehicle to recover to a stable use state.
In the present embodiment, the first damper 53 is a cylinder damper, and in other embodiments, the first damper 53 may be a piston rod damper.
The retainer plate 56 is connected to the frame 1 and abuts the leaf spring 54 for limiting the position of the leaf spring 54 and preventing lateral displacement thereof.
The plate spring suspension 5 of the double-front-axle suspension system in the embodiment has the advantages of simple structure, reasonable layout and high space utilization rate, is favorable for the arrangement of the plate spring 54, can increase the action length of the plate spring 54 as much as possible, improves the bearing capacity and the damping performance, enables the automobile crane to run smoothly, and improves the comfort.
As shown in fig. 3, the air suspension 6 of the double front axle suspension system includes a guide bracket 61, a guide plate 62, a second shock absorber 63, a second fixing bracket 65, and an air spring 64.
The guide bracket 61 is mounted on the frame 1 for connection with the guide plate 62. The front end of the guide plate 62 is provided with a rolling lug which is hinged with the guide bracket 61.
In this embodiment, the guide plate 62 is formed by stacking two steel plate reeds, and has a certain elasticity. The guide plate 62 is bolted to the second axle 3, and vibrations of the second axle 3 are transmitted to the guide plate 62, and the guide plate 62 plays a role of traction and guidance, and transmits vibrations to the air spring 64.
An air spring 64 is installed between the guide plate 62 and the frame 1 and is located behind the guide bracket 61, and the upper and lower ends of the air spring 64 are connected to the frame 1 and the guide plate 62, respectively.
It should be noted that, in this embodiment, the air spring 64 is a diaphragm air spring 64, which has a small size, and is beneficial to saving the installation space of the air suspension 6, and the diaphragm air spring 64 has good elastic performance, so that the comfort of the automobile crane can be improved. In other embodiments, the diaphragm type air spring 64, the bag type air spring 64 or the composite type air spring 64 can be selected according to the requirements of the vehicle type, so as to meet different use requirements.
The second fixed bracket 65 is installed on the frame 1, the upper end of the second shock absorber 63 is hinged with the second fixed bracket 65, and the lower end of the second shock absorber 63 is connected with the guide plate 62. The second shock absorber 63 can alleviate road surface impact, and quickly absorb shock generated by wheel jolt, so that the vehicle can be restored to a stable use state. The second damper 63 is a cylinder damper in the present embodiment, and in other embodiments, the second damper 63 may be a piston rod damper.
The air suspension 6 of the double-front-axle suspension system in the embodiment has the advantages of simple structure, small occupied space and high comfort, and can improve the running smoothness, comfort, operation stability and running safety of the crane.
Further, the air suspension 6 includes a height adjustment mechanism (not shown in the drawings) for adjusting the height of the second axle 3. The second axle 3 can be adjusted to a proper height through calibration, so that the axle load between the first axle 2 and the second axle 3 is uniform, the automobile crane can run smoothly, and the service life of the double-front-axle suspension system is prolonged.
Another embodiment of the utility model provides an automobile crane, including the chassis, the crane chassis includes landing leg case 4 and two front axle suspension systems, and landing leg case 4 is used for accomodating the stabilizer blade, and two front axle suspension systems are used for transmitting the power and the moment of being used in between wheel and frame 1, and the impact load of frame 1 is transmitted to the buffering road surface. The double front axle suspension system comprises a frame 1, a first axle 2, a second axle 3, a leaf spring suspension 5 and an air suspension 6, wherein the first axle 2 is positioned in front of the second axle 3, and a leg box 4 is arranged behind the second axle 3. The first vehicle axle 2 is connected to the vehicle frame 1 via an air suspension 6, the elastic element of the air suspension 6 being an air spring 64, the second vehicle axle 3 being connected to the vehicle frame 1 via a leaf spring suspension 5, the elastic element of the leaf spring suspension 5 being a leaf spring 54.
A gap is provided between the plate spring suspension 5 connected to the second axle 3 and the leg box 4, and the legs in the leg box 4 can be freely extended and contracted without interfering with the suspension. And the suspension and the leg box 4 have a certain distance, which is convenient for the maintenance of the leg box.
The air suspension 6 of the double front axle suspension system includes a guide bracket 61, a guide plate 62, a second shock absorber 63, a second fixing bracket 65, and an air spring 64. The guide bracket 61 is mounted on the frame 1 for connection with the guide plate 62. The front end of the guide plate 62 is provided with a rolling lug which is hinged with the guide bracket 61. The guide plate 62 is connected to the first axle 2 by bolts. An air spring 64 is installed between the guide plate 62 and the frame 1, and the upper and lower ends of the air spring 64 are connected to the frame 1 and the guide plate 62, respectively. The second fixed bracket 65 is installed on the frame 1, the upper end of the second shock absorber 63 is hinged with the second fixed bracket 65, and the lower end of the second shock absorber 63 is connected with the guide plate 62. The air suspension 6 is simple in structure, small in occupied space and high in comfort.
The leaf spring suspension 5 of the double front axle suspension system includes a front bracket 51, a rear bracket 52, a first shock absorber 53, a first fixing bracket 55, a stopper plate 56, and a leaf spring 54. A front bracket 51 and a rear bracket 52 are mounted on the frame 1, the front bracket 51 being located forward of the rear bracket 52 for securing a leaf spring 54. The front end of the leaf spring 54 is provided with a rolling lug which is hinged with the front bracket 51, and the rear end of the leaf spring 54 is connected with the rear bracket 52 in a sliding way. The leaf spring 54 includes a plurality of stacked leaf springs, and a fixing bolt penetrates the stacked leaf springs and fixedly connects the entire leaf spring 54 to the second axle 3. Leaf spring 54's active length is 1600mm, and leaf spring's in comparison among the prior art active length of leaf spring suspension has increased about 300mm, and leaf spring 54's bearing capacity improves, and the mobile crane goes more smoothly, and the travelling comfort promotes. The first fixing bracket 55 is installed on the frame 1, the upper end of the first shock absorber 53 is hinged with the first fixing bracket 55, and the lower end of the first shock absorber 53 is connected with the leaf spring 54. The retainer plate 56 is connected to the frame 1 and abuts the leaf spring 54 for limiting the position of the leaf spring 54 and preventing lateral displacement thereof. This leaf spring suspension 5 simple structure, rationally distributed, space utilization is high, is favorable to leaf spring 54 to arrange, can as far as possible increase leaf spring 54's effect length, improves bearing capacity and shock attenuation performance, makes mobile crane go smoothly, improves the travelling comfort.
The mobile crane of this embodiment is two front axle motorcycle types, first axle 2 adopts air suspension 6, 6 compact structure of air suspension, the travelling comfort is good, second axle 3 adopts leaf spring suspension 5, because 6 occupation space of air suspension of first axle 2 are less, leaf spring suspension 5 of second axle 3 has more installation space, leaf spring 54's effect length can increase, the bearing capacity of leaf spring suspension 5 has been strengthened, improve hoist ride comfort and travelling comfort simultaneously. The air suspension 6 further comprises a height adjusting mechanism which can adjust the height of the first vehicle axle 2, so that the axle load between the two vehicle axles is uniform, and the automobile crane can run smoothly.
In the description herein, references to the description of the terms "an example," "one example," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or implementation is included in at least one example or implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A double front axle suspension system comprises a vehicle frame (1), a first vehicle axle (2) and a second vehicle axle (3), wherein the first vehicle axle (2) is positioned in front of the second vehicle axle (3), and is characterized by further comprising a plate spring suspension (5) and an air suspension (6), wherein the first vehicle axle (2) is connected with the vehicle frame (1) through the plate spring suspension (5), and the second vehicle axle (3) is connected with the vehicle frame (1) through the air suspension (6), or
The first axle (2) is connected to the vehicle frame (1) via the air suspension (6), and the second axle (3) is connected to the vehicle frame (1) via the leaf spring suspension (5).
2. The double front axle suspension system according to claim 1, characterized in that the air suspension (6) comprises a guide bracket (61), a guide plate (62), a second shock absorber (63) and an air spring (64), wherein the guide bracket (61) is mounted on the vehicle frame (1), the front end of the guide plate (62) is hinged with the guide bracket (61), the guide plate (62) is connected with the first vehicle axle (2) or the second vehicle axle (3), the upper and lower ends of the air spring (64) are respectively connected with the vehicle frame (1) and the guide plate (62), and the upper and lower ends of the second shock absorber (63) are respectively connected with the vehicle frame (1) and the guide plate (62).
3. The double front axle suspension system according to claim 1, wherein the leaf spring suspension (5) comprises a front bracket (51), a rear bracket (52), a first shock absorber (53) and a leaf spring (54), the front bracket (51) and the rear bracket (52) are mounted on the vehicle frame (1), the front end of the leaf spring (54) is hinged with the front bracket (51), the rear end of the leaf spring (54) is slidably connected with the rear bracket (52), the leaf spring (54) is connected with the first vehicle axle (2) or the second vehicle axle (3), and the upper end and the lower end of the first shock absorber (53) are respectively connected with the vehicle frame (1) and the leaf spring (54).
4. Double front axle suspension system according to claim 3, characterized in that the active length of the leaf spring (54) is 1500-1600 mm.
5. Double front axle suspension system according to any one of claims 1-4, characterised in that the length of the projection of the leaf spring suspension (5) on the vehicle frame (1) is greater than the length of the projection of the air suspension (6) on the vehicle frame (1).
6. Double front axle suspension system according to claim 2, characterized in that the guide plate (62) comprises at least two steel plate springs stacked together.
7. Double front axle suspension system according to claim 2, characterised in that the air suspension (6) comprises a height adjustment mechanism for adjusting the height of an axle connected to the air suspension (6).
8. A crane undercarriage including a double front axle suspension system as claimed in any one of claims 1 to 7.
9. Crane chassis according to claim 8, characterised by further comprising a leg box (4), the leg box (4) being located on the rear side of the second axle (3), there being a gap between the leg box (4) and the suspension of the second axle (3).
10. A mobile crane, comprising a crane undercarriage according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022610335.9U CN213831264U (en) | 2020-11-12 | 2020-11-12 | Double-front-axle suspension system, crane chassis and automobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022610335.9U CN213831264U (en) | 2020-11-12 | 2020-11-12 | Double-front-axle suspension system, crane chassis and automobile crane |
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| Publication Number | Publication Date |
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| CN213831264U true CN213831264U (en) | 2021-07-30 |
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| CN202022610335.9U Active CN213831264U (en) | 2020-11-12 | 2020-11-12 | Double-front-axle suspension system, crane chassis and automobile crane |
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| CN (1) | CN213831264U (en) |
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