Tracked Chassis Gear Train Structure and Construction Machinery

Abstract

The present invention relates to the technical field of working machinery, and provides a crawler chassis gear train structure and a working machinery. The crawler chassis gear train structure includes a chassis body, a guide wheel, a drive wheel, a support and idler sprocket, and a crawler. The guide wheel and the drive wheel are respectively rotatably arranged at both ends of the chassis body, and the crawler is wound around the guide wheel and the drive wheel; the support and idler sprocket is rotatably arranged on the chassis body, and the support and idler sprocket is located between the guide wheel and the drive wheel. The top of the support and idler sprocket is matched with the upper ring part of the crawler, and the bottom of the support and idler sprocket is matched with the lower ring part of the crawler, so that the crawler drives the support and idler sprocket to rotate. In the present invention, the setting of the support and idler sprocket can increase the driving force for driving the support and idler sprocket to rotate, and further reduce the risk of the rotation of the support and idler sprocket being blocked.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and particularly relates to a chassis wheel train structure and a construction machinery. Background Art

[0002] In order to improve the walking ability of construction machinery or vehicles in harsh terrain environments, some construction machinery or vehicles are usually provided with a crawler-type chassis wheel train structure. For example, the chassis wheel train structure of a crawler excavator includes a guide wheel, a carrier wheel, a drive wheel, and a track idler provided on a frame, and the crawler of the excavator is simultaneously supported by the guide wheel, the carrier wheel, the drive wheel, and the track idler.

[0003] Among them, the track idler is arranged at the upper part of the chassis of the frame, and has a relatively small diameter and is used to support the upper ring part of the crawler. When a large amount of soil accumulated on the chassis dries up, the track idler is easily solidified by the soil, resulting in the frictional force between the crawler and the track idler being unable to drive the track idler to rotate normally. The rolling friction between the crawler and the track idler becomes sliding friction, which further causes serious wear of the track idler and problems such as eccentric wear and oil leakage. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a crawler-type chassis wheel train structure. The arrangement of the support and load-bearing track idler can increase the driving force for driving the support and load-bearing track idler to rotate, and thus can reduce the risk of the rotation of the support and load-bearing track idler being blocked.

[0005] The present invention provides a crawler-type chassis wheel train structure, including: a chassis body, a guide wheel, a drive wheel, a support and load-bearing track idler, and a crawler; wherein,

[0006] The guide wheel and the drive wheel are respectively rotatably arranged at both ends of the chassis body, and the crawler is wound around the guide wheel and the drive wheel;

[0007] The support and load-bearing track idler is rotatably arranged on the chassis body, and the support and load-bearing track idler is located between the guide wheel and the drive wheel. The top of the support and load-bearing track idler is matched with the upper ring part of the crawler, and the bottom of the support and load-bearing track idler is matched with the lower ring part of the crawler, so that the crawler drives the support and load-bearing track idler to rotate.

[0008] According to an embodiment of the present invention, it further includes a housing arranged on the chassis body, and the housing includes:

[0009] A pair of side plates, the pair of side plates are arranged at intervals and correspond to each other;

[0010] A top plate, connected to the pair of side plates;

[0011] Both ends of the axle assembly of the support and heavy load sprocket are respectively connected to a pair of the side plates, and the top plate is provided with an opening for the support and heavy load sprocket to extend out.

[0012] According to an embodiment of the present invention, the axle assembly includes:

[0013] A shaft body, the wheel body of the support and heavy load sprocket is rotatably sleeved on the outer periphery of the shaft body;

[0014] End caps, provided in a pair, are respectively fixedly connected to both ends of the shaft body; wherein,

[0015] An oil seal is provided between the end cap and the wheel body.

[0016] According to an embodiment of the present invention, an anti-rotation structure is provided between at least one end of the axle assembly and the side plate, and the anti-rotation structure is used to prevent the axle assembly from rotating relative to the side plate.

[0017] According to an embodiment of the present invention, the anti-rotation structure includes:

[0018] A stop surface provided at the end of the axle assembly;

[0019] A first convex structure fixedly provided on the side plate, and the first convex structure abuts against the stop surface to prevent the axle assembly from rotating.

[0020] According to an embodiment of the present invention, at least two support and heavy load sprockets are provided, and at least two support and heavy load sprockets are sequentially arranged between the guide wheel and the drive wheel.

[0021] According to an embodiment of the present invention, it further includes idler wheels, a plurality of idler wheels are provided, and the plurality of idler wheels are sequentially matched with the lower ring part of the crawler, and the plurality of idler wheels are distributed on both sides of the support and heavy load sprocket.

[0022] According to an embodiment of the present invention, a second convex structure is provided on the outer peripheral surface of the wheel body of the support and heavy load sprocket, and the second convex structure is matched with the link groove of the crawler.

[0023] According to an embodiment of the present invention, threaded holes are provided on both end faces of the axle assembly of the support and heavy load sprocket, through holes corresponding to the threaded holes are provided on the pair of side plates, and the support and heavy load sprocket is fixedly connected to the side plate by bolts inserted into the threaded holes and the through holes.

[0024] The working machine provided by the present invention includes the crawler chassis gear train structure described in any of the above embodiments.

[0025] Beneficial effects:

[0026] 1. A track chassis wheel system structure according to an embodiment of the present invention, wherein the top of the support and heavy sprocket is engaged with the upper ring portion of the track, and the bottom of the support and heavy sprocket is engaged with the lower ring portion of the track. The diameter of the support and heavy sprocket is relatively large, so that the torque applied by the track to the support and heavy sprocket increases, thereby avoiding the problem of the rotation of the support and heavy sprocket being blocked. In addition, the support and heavy sprocket is simultaneously subjected to two kinds of frictional forces from the upper ring portion and the lower ring portion of the track, increasing the source of rotational power. And since the support and heavy sprocket bears the weight of the whole machine, the frictional force between the support and heavy sprocket and the lower ring portion of the track is relatively large, that is, the power for driving the rotation of the support and heavy sprocket is relatively large, thus avoiding the failure caused by the non-rotation of the support and heavy sprocket.

[0027] 2. The stop surface provided at the end of the wheel axle assembly and the first convex structure fixedly provided on the inner side of the side plate cooperate with each other, which can ensure the relative static state of the side plate and the wheel axle assembly, so that the wheel axle assembly does not rotate, and can also prevent the end cover from slipping and rotating during installation and use.

[0028] 3. The second convex structure provided circumferentially on the support and heavy sprocket abuts against the inner side of the opening of each track link. The upper and lower ends of the support and heavy sprocket are both engaged with the track, which can increase the connection strength between the upper ring portion and the lower ring portion of the track and the support and heavy sprocket, and avoid the problems of lateral slippage and detachment of the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the layout of the track chassis wheel system provided by the present invention after removing the housing;

[0031] Figure 2 It is a schematic diagram of the overall layout of the track chassis wheel system provided by the present invention;

[0032] Figure 3 It is a schematic diagram of the assembly relationship between the support and heavy sprocket and the track provided by the present invention;

[0033] Figure 4 It is a schematic diagram of the housing structure provided by the present invention;

[0034] Figure 5 It is a schematic diagram of the fully sectional structure of the support and heavy sprocket provided by the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the support and heavy sprocket provided by the present invention;

[0036] Reference Signs:

[0037] 1. Crawler belt; 2. Support idler sprocket; 3. Guide wheel; 4. Idler wheel; 5. Driving wheel; 6. Bolt; 7. Housing; 11. Upper ring part; 12. Lower ring part; 21. Wheel body; 22. Oil seal part; 23. Stopping surface; 24. Threaded hole; 25. Shaft body; 26. End cover; 71. Through hole; 72. First convex structure; 73. Opening; 74. Side plate; 75. Top plate. Detailed Implementation Modes

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in 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. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0042] The present invention will be specifically described below in conjunction with the specific implementation manners.

[0043] In some specific implementation schemes of the present invention, as Figures 1 to 6 shown, the crawler chassis gear train structure includes a chassis body, a guide wheel 3, a drive wheel 5, a support and idler sprocket 2, and a crawler 1. The chassis body is located at the bottom of the vehicle body. The crawler 1 can be arranged on both sides of the chassis body or completely surround the chassis body. The crawler 1 is annular and composed of a plurality of links. The crawler 1 is arranged around the guide wheel 3 and the drive wheel 5. The inner sides of both ends of the annular crawler 1 are respectively matched with one outer end of the guide wheel 3 and one outer end of the drive wheel 5. The guide wheel 3 and the drive wheel 5 are respectively rotatably arranged at both ends of the chassis body. Among them, the guide wheel 3 is rotatably arranged at one end of the chassis body close to the forward movement direction of the chassis gear train. The guide wheel 3 is circumferentially provided with teeth that cooperate with the links of the crawler 1. The guide wheel 3 is rotationally matched with the crawler 1 through the teeth to guide the rotation direction of the crawler 1. The drive wheel 5 is rotatably arranged at one end of the chassis body away from the forward movement direction of the chassis gear train. The drive wheel 5 is also circumferentially provided with teeth that cooperate with the links of the crawler 1. The drive wheel 5 is rotationally matched with the crawler 1 through the teeth to drive the chassis gear train to move relative to the ground.

[0044] Further, the supporting and heavy-duty sprocket wheel 2 is rotatably arranged on the chassis body, and the supporting and heavy-duty sprocket wheel 2 is detachably connected to the chassis body. The supporting and heavy-duty sprocket wheel 2 is located between the guide wheel 3 and the driving wheel 5, and the outer circumferential end of the supporting and heavy-duty sprocket wheel 2 cooperates with both the upper ring portion 11 and the lower ring portion 12 of the crawler belt 1. A second protrusion structure is arranged on the circumferential edge of the supporting and heavy-duty sprocket wheel 2. The supporting and heavy-duty sprocket wheel 2 cooperates with the crawler belt 1 through the second protrusion structure. The second protrusion structure is embedded in the open space of each crawler belt link and abuts against the inner side of the open space of each crawler belt link, so as to increase the connection strength between the crawler belt 1 and the supporting and heavy-duty sprocket wheel 2, avoid the lateral slippage of the crawler belt 1, and further prevent the dislocation and detachment between the supporting and heavy-duty sprocket wheel 2 and the crawler belt 1. The upper end portion and the lower end portion of the supporting and heavy-duty sprocket wheel 2 respectively cooperate with the inner sides of the upper ring portion 11 and the lower ring portion 12 of the crawler belt 1, so as to drive the supporting and heavy-duty sprocket wheel 2 to rotate through the rotation of the crawler belt 1. When the upper end portion of the supporting and heavy-duty sprocket wheel 2 rotates in cooperation with the crawler belt 1, it is also used to support and lift the upper ring portion 11 of the crawler belt 1. When the lower end portion of the supporting and heavy-duty sprocket wheel 2 rotates in cooperation with the crawler belt 1, it is also used to support and share part of the pressure received by the chassis body.

[0045] With such a setting, the supporting and heavy-duty sprocket wheel 2 can not only share the weight of the whole machine, but also play a role in supporting the crawler belt 1, prevent the crawler belt 1 from deforming, improve the functional utility and concentration degree of the supporting and heavy-duty sprocket wheel 2, and realize that one kind of wheel structure has multiple uses. At the same time, the diameter of the supporting and heavy-duty sprocket wheel 2 is large, so its starting torque is small, reducing energy consumption. In addition, since the supporting and heavy-duty sprocket wheel 2 is simultaneously affected by two kinds of frictional forces of the upper ring portion 11 and the lower ring portion 12 of the crawler belt 1, the driving force source of the supporting and heavy-duty sprocket wheel 2 increases. And because the supporting and heavy-duty sprocket wheel 2 bears a large weight of the whole machine, the frictional force between the supporting and heavy-duty sprocket wheel 2 and the lower ring portion 12 of the crawler belt 1 is large, that is, the driving force of the supporting and heavy-duty sprocket wheel 2 is large. The small starting torque and large driving force of the supporting and heavy-duty sprocket wheel 2 can prevent the failure caused by the non-rotation of the supporting and heavy-duty sprocket wheel 2.

[0046] Further, the supporting and heavy-duty sprocket wheel 2 is located between the guide wheel 3 and the driving wheel 5, and the supporting and heavy-duty sprocket wheel 2 is also located in the annular cavity of the crawler belt 1. The longitudinal section at the center of the supporting and heavy-duty sprocket wheel 2 and the longitudinal section of the crawler belt 1 are in the same plane.

[0047] According to an embodiment of the present invention, the way that the supporting and heavy-duty sprocket wheel 2 is detachably connected to the chassis body includes but is not limited to bolt 6 connection and snap connection, etc. The connection way is determined by the relationship between specific structures and is not specifically limited herein.

[0048] Such as Figures 2 to 4As shown, in one embodiment, the housing 7 is disposed on the chassis body and the housing 7 is detachably connected to the chassis body. The housing 7 includes a pair of side plates 74 and a top plate 75. The pair of side plates 74 are spaced apart at the central position of the supporting and heavy-duty sprocket 2. The pair of side plates 74 are correspondingly disposed on both sides of the supporting and heavy-duty sprocket 2, and the pair of side plates 74 are symmetrically disposed on both sides of the supporting and heavy-duty sprocket 2. The two sides of the top plate 75 are fixedly connected to the pair of side plates 74 and the top plate 75 is higher than the pair of side plates 74. The supporting and heavy-duty sprocket 2 is relatively high. An opening 73 for the supporting and heavy-duty sprocket 2 to extend out is provided at the top of the top plate 75. Notches are symmetrically disposed at the bottoms of the pair of side plates 74 for the quick cooperation between the supporting and heavy-duty sprocket 2 and the inner side of the housing 7. Installation holes are provided on both the pair of side plates 74 and the top plate 75. The housing 7 is fixedly connected to the chassis body through the installation holes on the top plate 75. Both ends of the axle assembly of the supporting and heavy-duty sprocket 2 are detachably connected to the pair of side plates 74 through the installation holes.

[0049] As Figure 5 and Figure 6 shown, in one embodiment, the axle assembly includes a shaft body 25, end caps 26 and oil seal members 22. The shaft body 25 is a round shaft. The shaft section with the largest diameter in the shaft body 25 is the first shaft section. An installation hole for rotatably cooperating with the first shaft section of the shaft body 25 is provided at the center of the wheel body 21 of the supporting and heavy-duty sprocket 2. The wheel body 21 of the supporting and heavy-duty sprocket 2 is rotatably sleeved on the outer periphery of the shaft body 25 through the installation hole.

[0050] Further, the number of the end caps 26 is set to two and are respectively fixedly connected to both ends of the shaft body 25. The end caps 26 are fixedly connected to the shaft body 25 to ensure the relative static state between the end caps 26 and the shaft body 25. A sealing ring is provided between the end caps 26 and the shaft body 25 for sealing the lubricating oil in the axle assembly. The end caps 26 and the wheel body 21 are rotatably connected, and the end caps 26 and the wheel body 21 can rotate relative to each other. An oil seal member 22 is provided between the end caps 26 and the wheel body 21 for sealing.

[0051] Specifically, the fixed connection manner between the end caps 26 and the shaft body 25 can be pin connection or key connection effected by through-hole pins, etc. The fixed connection manner is determined in combination with the specific structure and is not specifically limited herein.

[0052] In a further embodiment, an anti-rotation structure is provided between at least one end of the axle assembly and the side plate 74 for preventing the axle assembly from rotating relative to the side plate 74.

[0053] Further, the anti-rotation structure includes a stop surface 23 and a first protrusion structure 72. The stop surface 23 is disposed at the end of the wheel axle assembly. More specifically, the stop surface 23 is disposed at the concave notch on the outer side of at least one end cap 26. The first protrusion structure 72 is fixedly disposed on the inner side of the side plate 74. The first protrusion structure 72 abuts against and cooperates with the stop surface 23 to prevent the end cap 26 from slipping and rotating during installation and use, and can also prevent the wheel axle assembly from rotating. When installing the support and heavy load sprocket 2, the position of the first protrusion structure 72 is fixed. The cooperation of the stop surface 23 and the first protrusion structure 72 is also used to position the installation position of the support and heavy load sprocket 2.

[0054] Specifically, the outer surface of the first protrusion structure 72 is consistent with the stop surface 23. The shape of the first protrusion structure 72 includes but is not limited to a rectangle, etc., and is not specifically defined herein.

[0055] In one embodiment, the support and heavy load sprocket 2 is fixedly connected to the housing 7. Specifically, the wheel axle assembly of the support and heavy load sprocket 2 is fixedly connected to the side plate 74.

[0056] Further, axial threaded holes 24 are provided on both end faces of the wheel axle assembly of the support and heavy load sprocket 2. A pair of side plates 74 are each provided with through holes 71 corresponding to the threaded holes 24. The support and heavy load sprocket 2 is fixedly connected to the side plate 74 by bolts 6 inserted into the threaded holes 24 and the through holes 71.

[0057] With such a setting, the side plate 74 of the housing 7 is fixedly connected to the chassis body and the wheel axle assembly of the support and heavy load sprocket 2. The two connection points on the side plate 74 are non-rotatable. The setting of the first protrusion structure 72 abutting against and cooperating with the stop surface 23 can ensure the relative static state of the side plate 74 and the wheel axle assembly, so that the wheel axle assembly does not rotate.

[0058] In one embodiment, the number of support and heavy load sprockets 2 is set to include but is not limited to two, and at least two support and heavy load sprockets 2 are sequentially arranged between the guide wheel 3 and the drive wheel 5. The number of support and heavy load sprockets 2 is not limited herein and is subject to actual needs.

[0059] Specifically, at least two support and heavy load sprockets 2 are symmetrically arranged along the middle position of the endless track 1. When the number of support and heavy load sprockets 2 is an odd number, one of the support and heavy load sprockets 2 is disposed at the corresponding position in the middle of the transverse direction of the track 1.

[0060] In one embodiment, a plurality of idler wheels 4 are provided. The lower ends of the plurality of idler wheels 4 are sequentially rotatably engaged with the lower ring portion 12 of the endless track 1. The plurality of idler wheels 4 are correspondingly distributed on both sides of the support and heavy load sprocket 2.

[0061] In one embodiment, a second convex structure is circumferentially arranged on the outer peripheral surface of the wheel body 21 of the supporting and heavy-duty sprocket wheel 2, and the second convex structure abuts against and cooperates with the inner side of the link groove of the crawler belt 1. Specifically, the second convex structure can be set as an irregular-shaped convex platform or the like, and the specific shape is not limited herein.

[0062] In an embodiment of the present invention, a working machine is further provided, which includes the crawler chassis gear train structure described in any one of the above embodiments, including a chassis body, a guide wheel 3, a drive wheel 5, a supporting and heavy-duty sprocket wheel 2, and a crawler belt 1. During the movement of the working machine, the crawler belt 1 is driven by the drive wheel 5 to move. The supporting and heavy-duty sprocket wheel 2 is in contact with both the upper ring portion 11 and the lower ring portion 12 of the crawler belt 1 and rotates therewith. The supporting and heavy-duty sprocket wheel 2 can not only share the weight of the whole machine but also play a role in supporting the crawler belt 1 to prevent the crawler belt 1 from deforming, improving the functional utility and concentration of the supporting and heavy-duty sprocket wheel 2, and realizing that one wheel structure has multiple uses. At the same time, since the diameter of the supporting and heavy-duty sprocket wheel 2 is relatively large, the starting force required for the supporting and heavy-duty sprocket wheel 2 to convert from a static state to a moving state is small, so its starting torque is small, reducing energy consumption. In addition, the supporting and heavy-duty sprocket wheel 2 is simultaneously subjected to two frictional forces of the upper ring portion 11 and the lower ring portion 12 of the crawler belt 1, increasing the source of rotational power. And since the supporting and heavy-duty sprocket wheel 2 bears a relatively large weight of the whole machine, the frictional force between the supporting and heavy-duty sprocket wheel 2 and the lower ring portion 12 of the crawler belt 1 is large, that is, the rotational power of the supporting and heavy-duty sprocket wheel 2 is large. The starting torque of the supporting and heavy-duty sprocket wheel 2 is small and the rotational power is large, thus avoiding the failure caused by the non-rotation of the supporting and heavy-duty sprocket wheel 2.

[0063] Taking the crawler chassis gear train structure of the embodiment of the present invention to explain the working process of the present invention, in the crawler chassis gear train, the drive wheel 5 is first driven by a power source. The drive wheel 5 is driven by a rotational force and tends to move from a static state. The teeth on the circumference of the drive wheel 5 cooperate with the grooves between the links of the crawler belt 1, and the crawler belt 1 is subjected to the driving force given by the drive wheel 5 and tends to move from a static state. Due to the cooperation between the grooves between the links of the crawler belt 1 and the second protruding structure of the supporting and heavy-duty sprocket wheel 2, the supporting and heavy-duty sprocket wheel 2 is subjected to the driving force and frictional force from the drive wheel 5 and also tends to move from a static state. The guide wheel 3 is driven by the crawler belt 1 to tend to move from a static state. The guide wheel 3 is used to guide the movement of the links of the crawler belt 1 after starting and can also be used to support the crawler belt 1. When the driving force applied to the drive wheel 5 by the driving power source is large enough, and the acting forces exerted by the crawler belt 1 on the drive wheel 5, the guide wheel 3, and the supporting and heavy-duty sprocket wheel 2 can simultaneously meet the minimum starting torques of the drive wheel 5, the guide wheel 3, and the supporting and heavy-duty sprocket wheel 2, the drive wheel 5, the guide wheel 3, and the supporting and heavy-duty sprocket wheel 2 start to rotate in the preset rotation direction, and the vehicle body starts to move.

[0064] Embodiments of the present invention overcome the defects that the traditional carrier sprocket has a high starting torque itself and is prone to mud jamming and non-rotation, and also overcome the defect that the chassis height is increased due to the need to raise the carrier sprocket to obtain a greater rotational torque. It realizes a wheel with multiple functions, which can not only bear weight but also support the chain, improving the functional utility and functional concentration of the supporting heavy carrier sprocket 2. Compared with the traditional carrier sprocket, the supporting heavy carrier sprocket 2 significantly reduces its own starting torque. Therefore, the supporting heavy carrier sprocket 2 does not need to be raised, resulting in a low vehicle and chassis height. Moreover, the setting of the supporting heavy carrier sprocket 2 significantly increases the rotational power of the supporting heavy carrier sprocket 2, and this chassis layout can reduce the risk of non-rotation of the supporting heavy carrier sprocket 2.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crawler chassis wheel system structure, characterized in that, Comprising a chassis body, idler wheels, drive wheels, support and carrier wheels, and a crawler track; wherein, The idler wheels and the drive wheels are respectively rotatably arranged at two ends of the chassis body, and the crawler track is wound around the idler wheels and the drive wheels; The support and carrier wheels are rotatably arranged on the chassis body, and the support and carrier wheels are located between the idler wheels and the drive wheels. The top of the support and carrier wheels is matched with the upper ring portion of the crawler track, and the bottom of the support and carrier wheels is matched with the lower ring portion of the crawler track, so that the crawler track drives the support and carrier wheels to rotate; It further comprises a housing arranged on the chassis body, and the housing includes: A pair of side plates, the pair of side plates are arranged at intervals and correspond to each other; A top plate, connected to the pair of side plates; Both ends of the axle assembly of the support and carrier wheels are respectively connected to the pair of side plates, and the top plate is provided with an opening for the support and carrier wheels to extend out; An anti-rotation structure is arranged between at least one end of the axle assembly and the side plate, and the anti-rotation structure includes: A stop surface arranged at the end of the axle assembly; A first convex structure fixedly arranged on the side plate, and the first convex structure abuts against the stop surface to prevent the axle assembly from rotating.

2. The track chassis wheel train structure according to claim 1, characterized in that The axle assembly includes: A shaft body, and the wheel body of the support and carrier wheel is rotatably sleeved on the outer periphery of the shaft body; End caps, provided in a pair, respectively fixedly connected to both ends of the shaft body; wherein, An oil seal is arranged between the end cap and the wheel body.

3. The track chassis wheel train structure according to claim 1, characterized in that, The support and carrier wheels are provided with at least two, and at least two of the support and carrier wheels are sequentially arranged between the idler wheels and the drive wheels.

4. The track chassis gear train structure according to claim 1, characterized in that It further comprises road wheels, the road wheels are provided with a plurality of, and the plurality of road wheels are sequentially matched with the lower ring portion of the crawler track, and the plurality of road wheels are distributed on both sides of the support and carrier wheels.

5. The crawler chassis wheel train structure according to claim 1, wherein, The outer peripheral surface of the wheel body of the support and carrier wheel is provided with a second convex structure, and the second convex structure is matched with the link groove of the crawler track.

6. The crawler chassis wheel train structure according to claim 1, characterized in that, Threaded holes are arranged on both end faces of the axle assembly of the support and carrier wheels, through holes corresponding to the threaded holes are arranged on the pair of side plates, and the support and carrier wheels are fixedly connected to the side plates by bolts inserted into the threaded holes and the through holes.

7. An earthmoving machine, characterized in that, Comprising the crawler chassis wheel system structure according to any one of claims 1-6.

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