Engineering vehicle

Abstract

The present disclosure provides an engineering vehicle, comprising: a vehicle frame; track assemblies arranged on left and right sides of the vehicle frame; a turret arranged above the vehicle frame; a connecting beam assembly comprising a connecting beam and a damping device, two ends of the connecting beam being connected with the track assemblies on opposite sides of the vehicle frame, and the damping device being arranged on the connecting beam; and a supporting part mounted on one of the turret and the damping device and in contact with the other of the turret and the damping device, the damping device being configured to absorb vibration of the turret in the up-down direction of the vehicle frame. The engineering vehicle provided by the present disclosure can reduce the shaking of the whole vehicle and improve the service life of the engineering vehicle.

Description

Technical Field

[0001] This disclosure relates to the field of construction machinery, and in particular to a construction vehicle. Background Technology

[0002] Tracked dynamic compaction machines, as a type of dynamic compaction equipment, are characterized by long working hours and frequent alternating loads. Recently, the market demand for tracked dynamic compaction machines has been strong, with increasing compaction capacity and higher quality requirements. Traditional dynamic compaction machine structures can no longer meet user requirements; therefore, the development of more stable and reliable equipment is urgently needed.

[0003] Most existing tracked dynamic compaction machines on the market are structurally similar to tracked cranes. However, the working conditions of dynamic compaction machines are more complex, as they operate under alternating loads for extended periods. Sudden unloading can cause significant shaking of the entire machine. These factors reduce the service life of the dynamic compaction machine, increase its failure rate during operation, and severely impact construction progress. Summary of the Invention

[0004] The purpose of this disclosure is to provide an engineering vehicle that reduces overall vehicle sway and improves the service life of the engineering vehicle.

[0005] The first aspect of this disclosure provides an engineering vehicle, comprising:

[0006] Frame;

[0007] Track assemblies are disposed on the left and right sides of the vehicle frame;

[0008] A turntable is positioned above the vehicle frame;

[0009] A connecting beam assembly includes a connecting beam and a vibration damping device. The two ends of the connecting beam are respectively connected to track assemblies located on opposite sides of the vehicle frame. The vibration damping device is disposed on the connecting beam.

[0010] A support is mounted on one of the turntable and the vibration damping device and maintains contact with the other of the turntable and the vibration damping device, the vibration damping device being configured to absorb vibrations of the turntable in the vertical direction along the frame.

[0011] According to some embodiments of this disclosure, the vibration damping device includes:

[0012] A cover plate, wherein the support portion is mounted on the bottom of the turntable and remains in contact with the cover plate; and

[0013] An elastic component is disposed between the connecting beam and the cover plate and is capable of elastic deformation along the vertical direction of the vehicle frame.

[0014] According to some embodiments of this disclosure

[0015] The elastic component includes a plurality of springs, which are telescopically oriented along the vertical direction of the vehicle frame; and / or

[0016] The elastic component includes a rubber sheet, the thickness of which is arranged along the vertical direction of the vehicle frame.

[0017] According to some embodiments of this disclosure, the vibration damping device includes an adjusting component configured to adjust the distance between the cover plate and the connecting beam to adjust the preload of the elastic component.

[0018] According to some embodiments of this disclosure, the adjusting component includes a first threaded connector connecting the cover plate and the connecting beam, and the vibration damping device adjusts the distance between the cover plate and the connecting beam through the first threaded connector to adjust the preload of the elastic component.

[0019] According to some embodiments of this disclosure, the adjusting component includes a connecting frame disposed on the connecting beam and having a threaded hole adapted to the first threaded connector. The first threaded connector passes through the cover plate and is connected to the threaded hole of the connecting frame. The adjusting component adjusts the distance between the cover plate and the connecting beam by adjusting the engagement position of the first threaded connector relative to the connecting frame.

[0020] According to some embodiments of this disclosure, the turntable is rotatably connected to the frame, and the end face of the cover plate is arc-shaped, convex toward the side away from the center of the turntable.

[0021] According to some embodiments of this disclosure, the vibration damping device further includes a connecting plate detachably connected to the connecting beam, and the elastic member is disposed between the cover plate and the connecting plate.

[0022] According to some embodiments of this disclosure, the track assembly includes:

[0023] Tracks; and

[0024] Mounting bracket, on which the end of the connecting beam is mounted, the mounting bracket being configured to restrict the movement of the end of the connecting beam relative to the mounting bracket in the vertical direction of the vehicle frame.

[0025] According to some embodiments of this disclosure

[0026] The mounting base includes a bracket and a first limiting block. The bracket is connected to the track, the end of the connecting beam is placed on the bracket, and the first limiting block is disposed on the bracket.

[0027] The connecting beam assembly includes a second limiting block disposed at the end of the connecting beam. The first limiting block has a first limiting surface, and the second limiting block has a second limiting surface disposed opposite to the first limiting surface. The first limiting block and the second limiting block abut against each other through the first limiting surface and the second limiting surface to restrict the relative movement of the connecting beam and the mounting seat in the vertical direction of the vehicle frame.

[0028] According to some embodiments of this disclosure, the first limiting surface and the second limiting surface are wedge surfaces, wherein the first limiting surface and the second limiting surface slope downward from the end closer to the track to the end farther away from the track.

[0029] According to some embodiments of this disclosure, the mounting base includes a limiting plate disposed on the bracket, the limiting plate forming an accommodating space adapted to the end of the connecting beam to restrict the relative movement of the connecting beam and the mounting base along the front-rear and left-right directions of the vehicle frame.

[0030] According to some embodiments of this disclosure, the connecting beam has a box-shaped structure.

[0031] According to some embodiments of this disclosure, the connecting beam includes a bottom plate at the bottom of the connecting beam, a top plate at the top of the connecting beam, a side plate at the side of the connecting beam, and an end plate at the end of the connecting beam. The bottom plate, the top plate, the side plate, and the end plate enclose the box-shaped structure. The connecting beam also includes a reinforcing plate, which is disposed within the box-shaped structure at positions corresponding to both ends of the vibration damping device and is arranged side by side with the end plate.

[0032] According to some embodiments of this disclosure, the turntable is rotatably connected to the frame, and the support includes a wheel that is rotatably disposed relative to one of the turntable and the damping device.

[0033] The engineering vehicle provided in this disclosure, during operation, allows the turntable vibration to be transmitted through the support to the vibration damping device installed on the connecting beam, where it is absorbed. This reduces the impact on various components of the engineering vehicle, especially the impact along the vertical direction of the frame, thereby reducing overall vehicle sway and extending the vehicle's service life. Furthermore, based on the aforementioned vibration damping effect, the driver's operating comfort can be correspondingly improved, and the failure rate of the engineering vehicle due to vibration can be correspondingly reduced.

[0034] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of an engineering vehicle according to some embodiments of this disclosure.

[0037] Figure 2 for Figure 1 The diagram shows an enlarged view of the engineering vehicle at point A.

[0038] Figure 3 for Figure 1 The diagram shows a partial rear view of the engineering vehicle.

[0039] Figure 4 for Figure 1 The diagram shows the structure of the tracked chassis of the engineering vehicle.

[0040] Figure 5 for Figure 4 The diagram shows a partial top view of the tracked chassis.

[0041] Figure 6 for Figure 5 The diagram shows an enlarged view of the tracked chassis at point B.

[0042] Figure 7 This is a structural schematic diagram of a connecting beam assembly according to some embodiments of the present disclosure.

[0043] Figure 8 for Figure 7 The diagram shows the structure of the vibration damping device for the connecting beam assembly.

[0044] Figures 1 to 8 In the figures, the labels represent:

[0045] 1. Frame;

[0046] 2. Track assembly; 21. Track; 22. Mounting base; 221. Bracket; 222. Limiting plate; 223. First limiting block; S1. First limiting surface;

[0047] 3. Turntable;

[0048] 4. Connecting beam assembly; 41. Connecting beam; 411. Base plate; 412. Top plate; 413. Side plate; 414. End plate; 415. Reinforcing plate; 42. Vibration damping device; 421. Cover plate; 422. Spring; 423. First threaded connector; 424. Connecting frame; 425. Connecting plate; 426. Second threaded connector; 43. Second limiting block; S2. Second limiting surface;

[0049] 5. Support section;

[0050] 6. Rammer;

[0051] 7. Boom. Detailed Implementation

[0052] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0053] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0054] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0055] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0056] refer to Figures 1 to 8Some embodiments of this disclosure provide an engineering vehicle, including a frame 1, track assemblies 2, a turntable 3, a connecting beam assembly 4, and a support 5. The track assemblies 2 are disposed on the left and right sides of the frame 1. The turntable 3 is disposed above the frame 1. The connecting beam assembly 4 includes a connecting beam 41 and a vibration damping device 42. Both ends of the connecting beam 41 are connected to the track assemblies 2 located on opposite sides of the frame 1, and the vibration damping device 42 is disposed on the connecting beam 41. The support 5 is mounted on one of the turntable 3 and the vibration damping device 42 and remains in contact with the other of the turntable 3 and the vibration damping device 42. The vibration damping device 42 is configured to absorb vibrations of the turntable 3 along the vertical direction of the frame 1.

[0057] The engineering vehicle provided in this disclosure, during operation, allows the turntable vibration to be transmitted through the support to the vibration damping device installed on the connecting beam, where it is absorbed. This reduces the impact on various components of the engineering vehicle, especially the impact along the vertical direction of the frame, thereby reducing overall vehicle sway and extending the vehicle's service life. Furthermore, based on the aforementioned vibration damping effect, the driver's operating comfort can be correspondingly improved, and the failure rate of the engineering vehicle due to vibration can be correspondingly reduced.

[0058] The chassis 1, track assembly 2, and connecting beam assembly 4 constitute the tracked chassis of the engineering vehicle. The connecting beam assembly 4 can be installed alone at the front or rear of the chassis 1, or simultaneously at the front and rear of the chassis 1.

[0059] The engineering vehicles in the embodiments of this disclosure can be Figure 1 The tracked dynamic compaction machine shown is a type of machine that compacts soil rapidly. The tracked dynamic compaction machine includes a boom 7 movably connected to a turntable 3 and a hammer 6 suspended from the boom 7. The hammer 6 falls freely or nearly freely from a certain height, compacting the soil layer and rapidly densifying the foundation. The dynamic compaction machine not only operates under complex conditions, but the impact of the hammer 6 on the ground causes the vehicle to suddenly unload, resulting in significant shaking of the entire vehicle.

[0060] The structure of the engineering vehicle in the embodiments of this disclosure is particularly suitable for vibration reduction of dynamic compaction machines. It can effectively reduce the amplitude and frequency of shaking of the entire dynamic compaction machine under high-frequency alternating loads, as well as after the hammer falls and the vehicle is unloaded, thereby reducing the impact on various components of the entire vehicle, reducing the risk of failure of the dynamic compaction machine, and extending the service life of various components of the entire dynamic compaction machine.

[0061] refer to Figure 2 and Figure 3 In some embodiments, the turntable 3 is rotatably connected to the frame 1, and the support 5 includes a wheel that is rotatably disposed relative to one of the turntable 3 and the damping device 42.

[0062] Setting the support part 5 as a wheel not only serves to support the turntable 3, but also guides and reduces frictional resistance when the turntable 3 rotates relative to the frame 1, thereby reducing wear on the components.

[0063] In some embodiments, the vibration damping device 42 includes a cover plate 421 and an elastic member. A support portion 5 is mounted on the bottom of the turntable 3 and remains in contact with the cover plate 421. The elastic member is disposed between the connecting beam 41 and the cover plate 421 and is capable of elastic deformation along the vertical direction of the frame 1.

[0064] Of course, the elastic component is not limited to elastic deformation only in the vertical direction of the frame 1. It can also elastically deform in both the vertical direction of the frame 1 and in other directions to reduce the vibration of the turntable 3 in different directions of the frame 1 and provide a better vibration reduction effect.

[0065] In some embodiments, the elastic component includes a plurality of springs 422, which are telescopingly arranged along the vertical direction of the frame 1. (See reference) Figure 6 Multiple springs 422 can be arranged side by side between the connecting beam 41 and the cover plate 421. In some embodiments not shown, the elastic component includes a rubber plate, the thickness of which is arranged along the vertical direction of the frame 1.

[0066] Of course, the elastic component can also include the springs, rubber plates, and combinations of other structural and material components mentioned above. Furthermore, the vibration damping device 42 is not limited to using elastic components for vibration damping; it can also utilize the compressibility of gases and the damping properties of liquids for vibration damping.

[0067] In order to adapt to the vibration reduction requirements of different models of engineering vehicles under different working conditions, in some embodiments, the vibration damping device 42 includes an adjustment component, which is configured to adjust the distance between the cover plate 421 and the connecting beam 41 to adjust the preload of the elastic component.

[0068] In the above embodiments, the adjusting component can limit the cover plate 421 and will not obstruct the rotation of the turntable 3; and when the turntable 3 vibrates, the elastic component can maintain sufficient preload to maintain contact with the turntable 3 and maintain sufficient range of extension and contraction, thereby better exerting the vibration reduction effect.

[0069] refer to Figure 6 In some embodiments, the adjusting component includes a first threaded connector 423 connecting the cover plate 421 and the connecting beam 41. The vibration damping device 42 adjusts the distance between the cover plate 421 and the connecting beam 41 through the first threaded connector 423 to adjust the preload of the elastic component.

[0070] The first threaded connector 423 can be directly or indirectly connected to the connecting beam 41. (See reference) Figure 6In some embodiments, the adjusting component includes a connecting frame 424, which is disposed on the connecting beam 41 and has a threaded hole adapted to the first threaded connector 423. The first threaded connector 423 passes through the cover plate 421 and is connected to the threaded hole of the connecting frame 424. The adjusting component adjusts the distance between the cover plate 421 and the connecting beam 41 by adjusting the engagement position of the first threaded connector 423 relative to the connecting frame 424.

[0071] refer to Figure 5 , Figure 6 and Figure 8 In some embodiments, the turntable 3 is rotatably connected to the frame 1, and the end face of the cover plate 421 is an arc shape that protrudes toward the side away from the center of the turntable 3.

[0072] Figure 5 , Figure 6 and Figure 8 In the illustrated embodiment, multiple springs 422, serving as elastic components, are uniformly arranged along the arcuate contour of the cover plate 421. The cover plate 421 of the aforementioned shape can adapt to the rotation trajectory of the turntable 3, thereby ensuring that the vibration damping device 42 maintains good support and vibration damping effects when the turntable 3 rotates to different positions or when vibration loads are applied at different locations.

[0073] In some embodiments, the vibration damping device 42 further includes a connecting plate 425, which is detachably connected to the connecting beam 41, and an elastic member is disposed between the cover plate 421 and the connecting plate 425.

[0074] refer to Figure 6 The connecting frame 424 can be mounted on the connecting plate 425, and the connecting plate 425 can be connected to the connecting beam 41 via the second threaded connector 426. The cover plate 421, the elastic component, the first threaded connector 423, and the connecting frame 424 can be pre-assembled with the connecting plate 425 as a whole, and then connected to the connecting beam 41 via the second threaded connector 426. This facilitates easy assembly and disassembly, and reduces the assembly difficulty of the entire engineering vehicle.

[0075] To reduce the risk of vertical movement of connecting beam 41 under alternating vibration loads, refer to Figure 7 In some embodiments, the track assembly 2 includes a track 21 and a mounting base 22. The end of the connecting beam 41 is mounted on the mounting base 22, which is configured to restrict the movement of the end of the connecting beam 41 relative to the mounting base 22 in the vertical direction of the frame 1.

[0076] refer to Figure 7In some embodiments, the mounting base 22 includes a bracket 221 and a first limiting block 223. The bracket 221 is connected to the track 21, the end of the connecting beam 41 is placed on the bracket 221, and the first limiting block 223 is disposed on the bracket 221. The connecting beam assembly 4 includes a second limiting block 43 disposed at the end of the connecting beam 41. The first limiting block 223 has a first limiting surface S1, and the second limiting block 43 has a second limiting surface S2 disposed opposite to the first limiting surface. The first limiting block 223 and the second limiting block 43 abut against each other through the first limiting surface S1 and the second limiting surface S2 to restrict the relative movement of the connecting beam 41 and the mounting base 22 in the vertical direction of the frame 1.

[0077] The first limiting block 223 and the second limiting block 43 are kept in contact through the first limiting surface S1 and the second limiting surface S2, which can not only reduce the risk of the connecting beam 41 jumping up and down under vibration load, but also reduce installation errors caused by the fixed connection method, such as welding deformation.

[0078] refer to Figure 7 In some embodiments, the first limiting surface S1 and the second limiting surface S2 are wedge surfaces, wherein the first limiting surface S1 and the second limiting surface S2 are inclined downward from the end closer to the track 21 to the end farther away from the track 21.

[0079] In the above embodiment, when the connecting beam 41 is assembled on the mounting base 22, the second limiting block 43 can be wedged into the first limiting block 223 and the bracket 221 along the assembly direction. The friction between the first limiting surface S1 and the second limiting surface S2 can provide sufficient pressure to press the first limiting block 223 and the second limiting block 43 together, resulting in a good limiting effect. Furthermore, the above structure has lower requirements for manufacturing precision, which helps to reduce costs.

[0080] In some embodiments, the mounting base 22 includes a limiting plate 222 disposed on the bracket 221. The limiting plate 222 forms an accommodating space adapted to the end of the connecting beam 41 to limit the relative movement of the connecting beam 41 and the mounting base 22 in the front-rear and left-right directions of the frame 1.

[0081] The limiting plate 222 can be composed of one or more plate-shaped components. For example, the limiting plate 222 can be a U-shaped plate with its opening facing away from the track 21, or it can be a combination of multiple flat plates extending in different directions, as long as it can limit the relative movement of the connecting beam 41 and the mounting seat 22 in the front-rear and left-right directions of the frame 1. Under the combined action of the first limiting block 223, the second limiting block 43, and the limiting plate 222, the connecting beam 41 can be positioned on the mounting seat 22.

[0082] In some embodiments, the connecting beam 41 has a box-shaped structure. The connecting beam of the above form has a strong ability to resist bending moments and is simple and reliable in structure.

[0083] Considering the load-bearing position of connecting beam 41, in order to further improve the load-bearing capacity of connecting beam 41, refer to Figure 8 In some embodiments, the connecting beam 41 includes a bottom plate 411 at the bottom of the connecting beam 41, a top plate 412 at the top of the connecting beam 41, a side plate 413 at the side of the connecting beam 41, and an end plate 414 at the end of the connecting beam 41. The bottom plate 411, top plate 412, side plate 413 and end plate 414 enclose a box-shaped structure. The connecting beam 41 also includes a reinforcing plate 415, which is disposed in the box-shaped structure at positions corresponding to both ends of the vibration damping device 42 and is arranged side by side with the end plate 414.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. An engineering vehicle, characterized in that, include: Frame (1); Track assemblies (2) are disposed on the left and right sides of the frame (1); A turntable (3) is positioned above the vehicle frame (1); The connecting beam assembly (4) includes a connecting beam (41) and a vibration damping device (42). The two ends of the connecting beam (41) are respectively connected to the track assemblies (2) located on opposite sides of the frame (1). The vibration damping device (42) is disposed on the connecting beam (41). and The support (5) is mounted on one of the turntable (3) and the vibration damping device (42) and keeps in contact with the other of the turntable (3) and the vibration damping device (42), the vibration damping device (42) being configured to absorb the vibration of the turntable (3) in the vertical direction along the frame (1); The track assembly (2) includes a track (21) and a mounting base (22), the end of the connecting beam (41) is mounted on the mounting base (22), and the mounting base (22) is configured to restrict the movement of the end of the connecting beam (41) relative to the mounting base (22) in the vertical direction of the frame (1); The mounting base (22) includes a bracket (221) and a first limiting block (223). The bracket (221) is connected to the track (21), the end of the connecting beam (41) is placed on the bracket (221), and the first limiting block (223) is disposed on the bracket (221). The connecting beam assembly (4) includes a second limiting block (43) disposed at the end of the connecting beam (41). The first limiting block (223) has a first limiting surface (S1), and the second limiting block (43) has a second limiting surface (S2) disposed opposite to the first limiting surface. The first limiting block (223) and the second limiting block (43) abut against each other through the first limiting surface (S1) and the second limiting surface (S2) to restrict the relative movement of the connecting beam (41) and the mounting seat (22) along the vertical direction of the frame (1).

2. The engineering vehicle according to claim 1, characterized in that, The vibration damping device (42) includes: The cover plate (421), the support portion (5) is mounted on the bottom of the turntable (3) and remains in contact with the cover plate (421); and An elastic component is disposed between the connecting beam (41) and the cover plate (421) and is capable of elastic deformation along the vertical direction of the frame (1).

3. The engineering vehicle according to claim 2, characterized in that, The elastic component includes a plurality of springs (422), which are telescopically arranged along the vertical direction of the frame (1); and / or The elastic component includes a rubber sheet, the thickness of which is arranged along the vertical direction of the frame (1).

4. The engineering vehicle according to claim 2, characterized in that, The vibration damping device (42) includes an adjustment component configured to adjust the distance between the cover plate (421) and the connecting beam (41) to adjust the preload of the elastic component.

5. The engineering vehicle according to claim 4, characterized in that, The adjusting component includes a first threaded connector (423) connecting the cover plate (421) and the connecting beam (41). The vibration damping device (42) adjusts the distance between the cover plate (421) and the connecting beam (41) through the first threaded connector (423) to adjust the preload of the elastic component.

6. The vehicle according to claim 5, characterized in that, The adjusting component includes a connecting frame (424), which is disposed on the connecting beam (41) and has a threaded hole adapted to the first threaded connector (423). The first threaded connector (423) passes through the cover plate (421) and is connected to the threaded hole of the connecting frame (424). The adjusting component adjusts the distance between the cover plate (421) and the connecting beam (41) by adjusting the engagement position of the first threaded connector (423) relative to the connecting frame (424).

7. The engineering vehicle according to claim 2, characterized in that, The turntable (3) is rotatably connected to the frame (1), and the end face of the cover plate (421) is an arc shape that protrudes toward the side away from the center of the turntable (3).

8. The engineering vehicle according to claim 2, characterized in that, The vibration damping device (42) further includes a connecting plate (425), which is detachably connected to the connecting beam (41), and the elastic component is disposed between the cover plate (421) and the connecting plate (425).

9. The engineering vehicle according to any one of claims 1 to 8, characterized in that, The first limiting surface (S1) and the second limiting surface (S2) are wedge surfaces, wherein the first limiting surface (S1) and the second limiting surface (S2) slope downward from one end near the track (21) to the other end away from the track (21).

10. The engineering vehicle according to any one of claims 1 to 8, characterized in that, The mounting base (22) includes a limiting plate (222) disposed on the bracket (221). The limiting plate (222) forms an accommodating space adapted to the end of the connecting beam (41) to restrict the relative movement of the connecting beam (41) and the mounting base (22) along the front-rear and left-right directions of the frame (1).

11. The engineering vehicle according to any one of claims 1 to 8, characterized in that, The connecting beam (41) has a box-shaped structure.

12. The engineering vehicle according to claim 11, characterized in that, The connecting beam (41) includes a bottom plate (411) at the bottom of the connecting beam (41), a top plate (412) at the top of the connecting beam (41), a side plate (413) at the side of the connecting beam (41), and an end plate (414) at the end of the connecting beam (41). The bottom plate (411), the top plate (412), the side plate (413), and the end plate (414) enclose the box-shaped structure. The connecting beam (41) also includes a reinforcing plate (415). The reinforcing plate (415) is disposed in the box-shaped structure at positions corresponding to both ends of the vibration damping device (42) and is arranged side by side with the end plate (414).

13. The engineering vehicle according to any one of claims 1 to 8, characterized in that, The turntable (3) is rotatably connected to the frame (1), and the support (5) includes a wheel that is rotatably disposed relative to one of the turntable (3) and the damping device (42).

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