CN116215684A - Guide wheel assembly, traveling mechanism and working machine - Google Patents

Abstract

The invention relates to the technical field of working machines and provides a guide wheel assembly, a travelling mechanism and a working machine, wherein the guide wheel assembly comprises a guide seat and guide wheels, a pair of sliding grooves are oppositely formed in two sides of the guide seat, and the sliding grooves extend along a first direction; two ends of the rotating shaft of the guide wheel are respectively provided with a support, each support is arranged in a chute at the same side of the support, and the support is in sliding connection with the chute; the sliding connection surface of one of the support and the sliding groove is provided with a limiting groove, the sliding connection surface of the other one is provided with a limiting protrusion, the limiting groove and the limiting protrusion extend along a first direction, the limiting protrusion is in sliding fit with the limiting groove and used for limiting the support to move along the axial direction, and when the guide wheel is deflected by axial force, the support can be synchronously deflected with the sliding groove so that the support cannot be separated from the sliding groove. The invention can limit the support to move along the axial direction, and avoid the situation that the axial limit of the guide seat to the guide wheel fails.

Description

Guide wheel assembly, traveling mechanism and working machinery

technical field

The invention relates to the technical field of working machines, in particular to a guide wheel assembly, a traveling mechanism and working machines.

Background technique

Guide wheels are generally used in crawler-type traveling mechanisms such as excavators, wherein the guide wheels mesh with the track to play a guiding role for the track and the entire chassis, in order to alleviate the impact of the track on the guide wheel during driving.

In an existing practical application, the guide wheel assembly is composed of a guide wheel, a guide wheel support, etc., and the guide seat limits the guide wheel in the left and right directions to prevent the guide wheel from detaching from the chain rail of the track.

However, when turning, the guide seat will be subjected to a large axial force, and the axial force will be transmitted to the guide seat through the support of the guide wheel. During long-term use, the guide seat will open due to unilateral force. In case of deformation, the guide wheel may be detached from the guide seat, resulting in the failure of the axial limit of the guide seat to the guide wheel. The position of the track will swing violently left and right along with the guide wheel. failure, resulting in track derailment and tooth skipping.

Contents of the invention

The invention provides a guide wheel assembly, a traveling mechanism and a working machine, which are used to solve the problem in the prior art that the guide seat is easily opened and deformed to both sides due to the axial deflection force of the guide wheel.

The invention provides a guide wheel assembly, comprising:

a guide seat, a pair of slide grooves are oppositely arranged on both sides of the guide seat, and the slide grooves extend along the first direction;

A guide wheel, the two ends of the rotating shaft of the guide wheel are respectively provided with bearings, each of the bearings is arranged in the chute on the same side as the bearing, and the bearings slide with the chute along the first direction connection; among them,

A limiting groove is arranged on the sliding connection surface of one of the support and the sliding groove, and a limiting protrusion is arranged on the sliding connecting surface of the other, and the limiting groove and the limiting protrusion Extending along the first direction, the limiting protrusion is slidingly matched with the limiting groove.

According to the guide wheel assembly provided by the present invention, the limiting protrusion is provided with a plurality of mud discharge grooves at intervals along its length direction.

According to the guide wheel assembly provided by the present invention, one or both sides of the limiting protrusion are provided with a plurality of mud discharge holes, and the positions of the mud discharge holes correspond to the positions of the mud discharge grooves; or,

A plurality of mud-discharging through holes are arranged at intervals along the length of the limiting groove, and the mud-discharging through-holes correspond to the mud-discharging groove up and down.

According to the guide wheel assembly provided by the present invention, the guide seat includes a pair of side plates arranged at intervals, a space for accommodating the guide wheel is formed between the pair of side plates, and the inner surfaces of the pair of side plates Correspondingly, a pair of the chute is provided.

According to the guide wheel assembly provided by the present invention, the chute includes:

a first connecting plate, the first connecting plate is connected to the inner side of the side plate along a first direction;

a second connecting plate, the second connecting plate is connected to the inner side of the side plate along the first direction, and the first connecting plate and the second connecting plate are arranged at intervals along the second direction on the inner side of the side plate .

According to the guide wheel assembly provided by the present invention, the pair of limiting protrusions are respectively arranged on the inner surfaces corresponding to the first connecting plate and the second connecting plate, and the mud discharge hole is arranged on the first connecting plate. The connecting plate corresponds to the position of the mud discharge groove, and a pair of the limit grooves are arranged on the upper and lower surfaces of each of the supports.

According to the guide wheel assembly provided by the present invention, the pair of limiting grooves are respectively arranged on the inner surfaces corresponding to the first connecting plate and the second connecting plate, and the mud discharge through hole is arranged on the limiting grooves. In the slot, a pair of limit protrusions are arranged on the upper and lower surfaces of each support.

According to the guide wheel assembly provided by the present invention, a plurality of tooth-shaped structures are uniformly arranged on the circumferential surface of the guide wheel.

In a second aspect, the present invention provides a crawler system, comprising:

a track, the track is composed of a plurality of track shoes connected in sequence and forming a closed loop;

a driving wheel, which is arranged in the crawler belt and is located at one end of the crawler belt;

The guide wheel assembly as described in any one of the first aspect is arranged in the track and is located at the other end of the track.

In a third aspect, the present invention also provides a working machine, including the crawler belt system described in the second aspect.

Beneficial effect:

1. The guide wheel assembly provided by the present invention includes a guide seat and a guide wheel. A pair of slide grooves are oppositely arranged on both sides of the guide seat; the guide wheel is rotatably arranged in the guide seat, and the center of the guide wheel is provided with a rotating shaft. The ends are respectively connected with bearings, and the bearings are set in the chute on the same side, and the bearing is slidably connected with the chute along the first direction, through the limit groove and the sliding connection surface between the chute and the support The second limit protrusion can ensure the straightness and stability of the relative sliding between the support and the chute, and can limit the movement of the support along the axial direction. In this way, when the guide wheel is subjected to axial force when turning, the guide seat can be moved The structures on both sides are connected together, so as to avoid the opening deformation caused by the axial force on one side of the guide seat, which will cause the failure of the axial limit of the guide seat to the guide wheel.

2. The upper and lower surfaces of the support are respectively provided with limit grooves, and the upper and lower surfaces of the chute are respectively provided with limit protrusions. The limit protrusions are provided with mud discharge grooves at intervals along their length, and the corresponding The position of the mud discharge groove is provided with a mud discharge hole, which is convenient to discharge the soil and sand particles that will exist between the limit groove and the limit protrusion out of the chute, so as not to affect the relative sliding between the support and the chute.

3. When the limit groove is set on the upper and lower surfaces of the chute, the limit groove on the lower surface is easy to accumulate mud and sand. By setting the mud discharge groove at intervals on the limit protrusion, the corresponding row is set at the interval of the limit groove. The mud through hole can directly discharge the soil and sand in the limit groove, and can also achieve the effect of mud discharge.

The present invention also provides a traveling mechanism and an operating machine, including crawler belts, driving wheels and the guide wheel assembly described in the first aspect. When working, the concave-convex fit between the support of the guide wheel and the chute of the guide seat can not only realize the guiding function, but also restrict the support from moving away from the chute along the axis direction, and at the same time play a role To connect the support and the structure on both sides of the guide seat together, the guide seat is subjected to axial deflection force instead of one-sided force, effectively avoiding the opening deformation of the guide seat caused by the axial force Situation happens.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural view of a guide wheel assembly provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of a guide wheel provided in an embodiment of the present invention;

Fig. 3 is a schematic structural view of a guide seat provided by an embodiment of the present invention;

Fig. 4 is a partial structural schematic diagram of a chute provided by an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a guide wheel assembly in the prior art.

Reference signs:

1. Guide wheel; 2. Guide seat; 21. Side plate; 3. Chute; 4. Support; 5. Limit groove; 6. Limit protrusion; 31. First connecting plate; 32. Second connection 7. Mud discharge tank; 8. Mud discharge hole; 9. Toothed structure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this The embodiments and simplified descriptions of the invention do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

As shown in Figure 5, a guide wheel assembly in the prior art, the guide wheel assembly is composed of a guide wheel 1, a guide seat 2, etc., and chute 3 is arranged on both sides of the guide seat 2, which can guide the guide wheel 1 in the left and right directions. The position limit prevents the guide wheel 1 from breaking away from the chain rail of the track, but when turning, the guide seat 2 will receive a large axial force, and the axial force is transmitted to the guide seat 2 through the support 4 of the guide wheel 1. In the long-term During the use of the track, the guide seat 2 will open and deform, and the position of the track will swing violently with the guide wheel 1. The cooperation between the wheel train of the entire chassis and the track will fail, resulting in the track derailment and tooth skipping.

A guide wheel assembly, a traveling mechanism and an operating machine provided by an embodiment of the present invention are described below with reference to FIGS. 1 to 4 .

A guide wheel assembly provided in this embodiment, as shown in FIGS. 1 to 3 , includes: a guide seat 2 and a guide wheel 1 .

Wherein, a pair of slide grooves 3 are arranged oppositely on both sides of the guide seat 2, and the slide grooves 3 extend along a first direction, and the first direction may be a vertical direction, a horizontal direction, or other directions, as shown in Fig. 1 In the shown embodiment, the first direction is the horizontal direction, that is to say, a pair of slide grooves 3 are horizontally arranged on both sides of the guide seat 2 .

The guide wheel 1 is rotatably arranged in the guide seat 2, and the center of the guide wheel 1 is provided with a rotating shaft, and the guide wheel 1 is connected with the rotating shaft through a bearing to realize the rotation of the guide wheel 1 around the rotating shaft; the two ends of the rotating shaft are respectively connected with bearings 4, Each support 4 is arranged in the chute 3 on the same side, and the support 4 is slidably connected with the chute 3 along the first direction, that is, the support 4 can slide in the chute 3 along the length direction of the chute 3 .

A limiting groove 5 is provided on the sliding connection surface of one of the support 4 and the chute 3, and a limiting protrusion 6 is arranged on the sliding connecting surface of the other, and the limiting groove 5 and the limiting protrusion 6 are arranged along the first Extending in one direction, the limit protrusion 6 is slidingly matched with the limit groove 5 to limit the movement of the support 4 along the axial direction. When the guide wheel 1 is deflected by the axial force, the support 4 can deflect synchronously with the chute 3, So that the support 4 will not disengage from the chute 3 .

It can be known from the above scheme that compared with the prior art, the present invention sets the two supports 4 of the guide wheel 1 in the chute 3, and the supports 4 can slide and fit with the chute 3 in the horizontal direction, so that the guide wheel 1 It can move in the guide seat 2, which can alleviate the impact and vibration of the track on the guide wheel 1 during driving; through the limit groove 5 and the limit protrusion 6 arranged between the chute 3 and the support 4, it can ensure the support The straightness and stability of the relative sliding between the seat 4 and the chute 3 can limit the movement of the support 4 along the axial direction, so that when the steering guide wheel 1 is subjected to axial force, the structures on both sides of the guide seat 2 can be connected to the together, so as to avoid the opening deformation of one side of the guide seat 2 under the action of axial force, which will lead to the failure of the axial limit of the guide seat 2 to the guide wheel 1 .

In this embodiment, as shown in Figure 2, the limit groove 5 is arranged on the upper and lower surfaces of the support 4, and a pair of limit projections 6 are arranged on the upper and lower surfaces of the chute 3 along the length direction of the chute 3, limiting The positioning protrusion 6 is slidingly fitted with the limiting slot 5 .

In this way, the upper and lower surfaces of the support 4 are respectively provided with limiting grooves 5, and the upper and lower surfaces of the chute 3 are respectively provided with limiting protrusions 6, and the limiting protrusions 6 are inserted into the limiting grooves 5. Sliding connection can limit the movement of the support 4 along the axial direction without interfering with the movement of the guide wheel 1 in the guide seat 2; since the upper and lower surfaces of the support 4 are concave-convex with the chute 3, it can prevent the guide wheel 1 from deflecting. The support 4 is disengaged from the chute 3. When the guide wheel 1 is subjected to axial force, through this structure, the support 4 and the structures on both sides of the guide seat 2 can be connected together to avoid the occurrence of the guide seat 2. The case where the axial limit of wheel 1 fails.

Further, since the upper and lower surfaces of the chute 3 are respectively provided with limit projections 6, and during the operation of the machine tool, there may be impurities such as soil, sand and gravel particles between the limit groove 5 and the limit projection 6. , in order not to affect the relative sliding between the two, the limit protrusion 6 is provided with a plurality of mud discharge grooves 7 at intervals along its length direction. One or both sides of the lifting 6 are provided with a plurality of mud discharge holes 8, and the positions of the mud discharge holes 8 and the mud discharge groove 7 are corresponding, so as to facilitate the soil, Sand and gravel particles are discharged, and can not be accumulated at the bottom of the mud discharge tank 7 .

In other embodiments, a pair of limiting protrusions 6 are arranged on the upper and lower surfaces of the support 4, and a pair of limiting grooves 5 are arranged on the upper and lower surfaces of each chute 3 along the length direction of the chute 3. At this time, The limit protrusion 6 is provided with a plurality of mud discharge grooves 7 at intervals along its length direction, and the limit groove 5 is provided with a plurality of mud discharge through holes at intervals along its length direction, and the mud discharge through holes correspond to the mud discharge grooves 7 up and down. The soil and gravel particles existing between the limiting groove 5 and the limiting protrusion 6 can be directly discharged through the mud discharge through hole in the limiting groove 5 .

The above-mentioned support 4 can adopt a block structure, including but not limited to a rectangular block, which can provide flat upper and lower surfaces, which is conducive to the sliding fit between the support 4 and the chute 3, and the upper surface and the lower surface of the support 4 are both plane, it is convenient to set the limit groove 5 or the limit protrusion 6.

In some other embodiments, a limit groove 5 and a limit protrusion 6 can also be provided on the upper and lower surfaces of the support 4, and correspondingly, a limit protrusion 6 and a limit groove can be respectively provided on the upper and lower surfaces of the chute 3. 5. The axial limit effect on the support 4 can also be realized, preventing the support 4 from detaching from the slide groove 3 along the axis direction.

Of course, this is only for illustration, and is not intended to limit the scope of protection.

Referring to Fig. 3, in the present embodiment, the guide seat 2 includes a pair of side plates 21 arranged at intervals, a space for accommodating the guide wheel 1 is formed between the pair of side plates 21, and a pair of side plates 21 are correspondingly provided with a For the chute 3 above.

In a specific embodiment, the chute 3 includes a first connecting plate 31 and a second connecting plate 32, the first connecting plate 31 is connected to the inner side of the side plate 21 along the first direction, and the second connecting plate 32 is connected to the inner side of the side plate 21 along the first direction. Connected to the inner side of the side plate 21, the first connecting plate 31 and the second connecting plate 32 are arranged at intervals along the second direction on the inner side of the side plate 21. The second direction can be a vertical direction or a horizontal direction, or can be For other directions, in the embodiment shown in FIG. 1 , the second direction is perpendicular to the above-mentioned first direction, which is a vertical direction.

Optionally, the first connecting plate 31 and the second connecting plate 32 may be integrally formed, welded or connected with the main body of the guide seat 2 .

Preferably, the size of the first connecting plate 31 and the second connecting plate 32 are the same, and both the first connecting plate 31 and the second connecting plate 32 are connected to the guide seat 2 through a supporting connection structure, so as to improve the connection between the first connecting plate 31 and the second connecting plate 32. Stress stability of the second connecting plate 32; as shown in FIG. 3 , the supporting connecting structure can be a supporting plate or a supporting block.

In this embodiment, a pair of limiting protrusions 6 are respectively provided on inner surfaces corresponding to the first connecting plate 31 and the second connecting plate 32 . The position-limiting protrusion 6 is provided with mud discharge grooves 7 at intervals along its length direction. In the embodiment shown in Figure 4, the mud discharge groove 7 can be a V-shaped groove, and the slope of the V-shaped groove facilitates the positioning of the position-limiting groove 5. The soil and gravel particles that will exist between the limit protrusion 6 will be discharged and will not accumulate in the bottom of the mud discharge tank 7; in other embodiments, the two slopes of the mud discharge tank 7 can be set as concave The curved surface is also conducive to the discharge of soil.

In this way, due to the different working environments, impurities such as soil and sand particles may exist between the limit groove 5 and the limit protrusion 6. In order not to affect the relative sliding between the support 4 and the chute 3, through the limit protrusion Mud discharge grooves 7 are arranged at intervals on the 6, and there is a space between the mud discharge grooves 7 and the limit groove 5 on the support 4. As the operating machinery is impacted or vibrated by the guide wheels during driving, it is convenient to move along the chute 3. The soil, sand and gravel particles, etc. are discharged through the mud discharge tank 7.

The above are examples only, and are not intended to limit the scope of protection. The shape of the mud discharge tank 7 is not limited to the above-mentioned form. In the protection scope of the present invention.

Further, a mud discharge hole 8 is provided at a position corresponding to the mud discharge groove 7 on the first connecting plate 31, and the mud discharge hole 8 is arranged on one side or both sides of the limit protrusion 6, and the bottom of the mud discharge groove 7 is as high as On the upper surface of the second connecting plate 32, or flush with the upper surface of the second connecting plate 32, so that earth and sand fall smoothly in the mud discharge hole 8; the shape of the mud discharge hole 8 can be rectangular, circular Shapes such as , polygon, also can be other irregular shapes, be used for the soil sandstone that will be discharged through the mud discharge groove 7, export to the outside of the chute 3 by the mud discharge hole 8.

In this way, the soil particles discharged from the mud discharge groove 7 are discharged from the guide seat 2 through the mud discharge hole 8, effectively ensuring the free sliding of the guide wheel 1 in the front and rear directions on the guide seat 2, and avoiding the guide wheel caused by mud and sand. 1 A stuck situation occurs.

In some other embodiments, a pair of limiting grooves 5 are respectively provided on the inner surfaces corresponding to the first connecting plate 31 and the second connecting plate 32 (not shown in the figure), and the limiting protrusion 6 is arranged on the support 4 The upper and lower surfaces of the upper and lower surfaces, the limit protrusion 6 is slidingly matched with the limit groove 5. That is to say, the concave-convex matching method is also adopted, and only the upper and lower surfaces of the support 4 are provided with protrusions, and the upper and lower surfaces of the chute 3 are provided with a limit groove 5. In this way, by setting the limit on the support 4 The protrusion 6 is inserted into the limiting groove 5 in the sliding groove 3, and the two can also realize a sliding connection, which can also avoid the failure of the axial limiting of the guide seat 2 to the guide wheel 1.

Further, in this embodiment, the position-limiting protrusion 6 is provided with mud discharge grooves 7 at intervals along its length direction, and the position-limiting groove 5 is provided with mud discharge through holes at intervals along its length direction. Because the limiting protrusion 6 is arranged on the upper and lower surfaces of the support 4, and the limiting groove 5 is arranged on the inner surfaces of the first connecting plate 31 and the second connecting plate 32, the limiting groove 5 on the first connecting plate 31 is easy to accumulate mud Soil and gravel, by setting mud discharge grooves 7 at intervals on the limit protrusion 6, and correspondingly setting mud discharge through holes at intervals in the limit groove 5, the soil and sand can be directly discharged in the limit groove 5, which also realizes Mud removal effect.

Referring to FIG. 1 and FIG. 2 , in this embodiment, a plurality of tooth-shaped structures 9 are uniformly arranged on the circumferential surface of the guide wheel 1 . Specifically, the teeth are arranged on the limit flange in the middle of the outer circumferential surface of the guide wheel 1, and the limit flange is used to cooperate with the track to prevent the guide wheel 1 from breaking away in the track; by setting the limit flange on the guide wheel 1 The tooth-shaped structure 9 enables the guide wheel 1 to scrape or crush the soil when meshing with the crawler chain rail, so as to avoid the phenomenon of derailment of the guide wheel 1 caused by compacting the soil inside the chain rail.

An embodiment of the present invention provides a traveling mechanism, including crawler belts, driving wheels and the aforementioned guide wheel assembly.

Wherein, the track is composed of a plurality of track shoes which are connected in sequence and form a closed loop. The driving wheel is arranged in the track and is located at the rear end of the track; the guide wheel 1 is arranged in the track and is located at the front end of the track.

The traveling mechanism with the above-mentioned guide wheel 1, when working, can not only realize the guiding effect, but also can Restrict the support 4 from moving away from the chute 3 along the axial direction, and at the same time play a role in connecting the support 4 with the structure on both sides of the guide seat 2, so that the guide seat 2 is no longer one-sided when it is subjected to axial deflection force. force, effectively avoiding the situation that the guide seat 2 is opened and deformed by the action of the axial force.

Through the mud discharge groove 7 and the mud discharge hole 8 provided in the chute 3, the soil and sand in the support 4 and the chute 3 can be effectively discharged, effectively ensuring that the guide wheel 1 slides freely on the guide seat 2, and avoiding mud The situation that the guide wheel 1 is stuck caused by soil and sand. The toothed structure 9 on the guide wheel 1 can effectively scrape and crush the soil inside the track chain rail, which is beneficial to the discharge of the track chain rail soil, and can effectively avoid the derailment of the guide wheel 1 caused by soil accumulation.

In addition, the traveling mechanism also includes a tensioning device, a plurality of rollers and a plurality of supporting sprockets. The tensioning device is set in the crawler belt and connected with the bracket to buffer the guide wheel 1. Multiple support rollers are arranged in the track belt at intervals and located below the driving wheel and the guide wheel 1. Multiple supporting sprockets are spaced apart. It is arranged in the crawler belt, and is located above between the driving wheel and the guide wheel 1.

An embodiment of the present invention also provides a working machine, including the above-mentioned traveling mechanism. The aforementioned working machine is a crawler-type working machine, such as an excavator, a crane, and the like.

In the description of the embodiments of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrated connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention according to specific situations.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "mode", "specific ways", or "some ways" mean specific features described in conjunction with the embodiment or mode , structure, material or feature is included in at least one embodiment or mode of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or modes. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without conflicting with each other.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than 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: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A guide wheel assembly, characterized in that, comprising: a guide seat (2), a pair of slide grooves (3) are oppositely arranged on both sides of the guide seat (2), and the slide grooves (3) extend along the first direction; The guide wheel (1), the two ends of the rotating shaft of the guide wheel (1) are respectively provided with supports (4), and each of the supports (4) is arranged in the same side of the chute (3) , the support (4) is slidingly connected with the chute (3); wherein, A limiting groove (5) is provided on the sliding connection surface of one of the support (4) and the sliding groove (3), and a limiting protrusion (6) is provided on the sliding connecting surface of the other, The limiting groove (5) and the limiting protrusion (6) extend along the first direction, and the limiting protrusion (6) is slidingly fitted with the limiting groove (5). 2. The guide wheel assembly according to claim 1, characterized in that, the limiting protrusion (6) is provided with a plurality of mud discharge grooves (7) at intervals along its length direction. 3. The guide wheel assembly according to claim 2, characterized in that, one or both sides of the limiting protrusion (6) are provided with a plurality of mud discharge holes (8), and the mud discharge holes (8 ) corresponds to the position of the mud discharge tank (7); or, The limiting groove (5) is provided with a plurality of mud discharge through holes at intervals along its length direction, and the mud discharge through holes correspond to the mud discharge groove (7) up and down. 4. The guide wheel assembly according to claim 3, characterized in that, the guide seat (2) comprises a pair of side plates (21) arranged at intervals, and a pair of side plates (21) are formed between the pair of side plates (21) for In the space for accommodating the guide wheel (1), a pair of sliding grooves (3) are correspondingly provided on the inner surfaces of a pair of side plates (21). 5. The guide wheel assembly according to claim 4, characterized in that, the chute (3) comprises: a first connecting plate (31), the first connecting plate (31) is connected to the inner side of the side plate (21) along a first direction; The second connecting plate (32), the second connecting plate (32) is connected to the inner side of the side plate (21) along the first direction, the first connecting plate (31) and the second connecting plate ( 32) arranged at intervals along the second direction on the inner side of the side plate (21). 6. The guide wheel assembly according to claim 5, characterized in that, a pair of said limiting protrusions (6) are respectively arranged on said first connecting plate (31) and said second connecting plate (32) Corresponding to the inner surface, the mud discharge hole (8) is arranged on the position corresponding to the mud discharge groove (7) on the first connecting plate (31), and a pair of the limit grooves (5) are arranged on the The upper and lower surfaces of each said support (4). 7. The guide wheel assembly according to claim 5, characterized in that, a pair of said limiting grooves (5) are respectively arranged on the opposite sides of said first connecting plate (31) and said second connecting plate (32). Corresponding to the inner surface, the mud discharge through hole is arranged in the limiting groove (5), and a pair of limiting protrusions (6) are arranged on the upper and lower surfaces of each support (4). 8. The guide wheel assembly according to claim 1, characterized in that, a plurality of tooth-shaped structures (9) are uniformly arranged on the circumferential surface of the guide wheel (1). 9. A walking mechanism, characterized in that it comprises: a track, the track is composed of a plurality of track shoes connected in sequence and forming a closed loop; a driving wheel, which is arranged in the crawler belt and is located at one end of the crawler belt; The guide wheel assembly according to any one of claims 1-8, which is arranged in the track and is located at the other end of the track. 10. An operating machine, characterized by comprising the traveling mechanism according to claim 9.

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