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 machine

Technical Field

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

Background

The guide wheel is generally used in crawler-type travelling mechanisms such as an excavator, wherein the guide wheel is meshed with the crawler to play a role in guiding the crawler and the whole chassis, so that the impact of the crawler on the guide wheel in the travelling process is relieved.

In an existing practical application, the guiding wheel assembly consists of a guiding wheel, a guiding wheel support and the like, and the guiding wheel is limited by the guiding seat in the left-right direction, so that the guiding wheel is prevented from being separated from a caterpillar track of the caterpillar track.

However, when steering, the guide holder can receive a great axial force, and the axial force is transmitted to the guide holder through the support of guide wheel, and in long-term use, the guide holder can be because unilateral atress appears opening the deformation's condition to lead to the guide wheel to be possible to break away from the guide holder, lead to the guide holder to the spacing inefficacy of axial direction of guide wheel, the position of track will be with the guide wheel about violently swinging together, the wheel train of whole chassis and the cooperation inefficacy of track lead to the fact the condition emergence of track derailment, jump tooth.

Disclosure of Invention

The invention provides a guide wheel assembly, a traveling mechanism and a working machine, which are used for solving the problem that a guide seat is easy to open and deform to two sides due to axial deflection force of a guide wheel in the prior art.

The present invention provides a guide wheel assembly comprising:

the guide seat is provided with a pair of sliding grooves on two sides of the guide seat, and the sliding grooves extend along a first direction;

the two ends of the rotating shaft of the guide wheel are respectively provided with a support, each support is arranged in the sliding groove on the same side of the support, and the supports are in sliding connection with the sliding groove along the first direction; wherein, the liquid crystal display device comprises a liquid crystal display device,

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 sliding groove is provided with a limiting protrusion, the limiting groove and the limiting protrusion extend along the first direction, and the limiting protrusion is in sliding fit with the limiting groove.

According to the guide wheel assembly provided by the invention, the limit protrusions are provided with a plurality of mud discharging grooves at intervals along the length direction of the limit protrusions.

According to the guide wheel assembly provided by the invention, one side or two sides of the limiting bulge are provided with a plurality of mud discharging holes, and the mud discharging holes correspond to the mud discharging grooves in position; or alternatively, the first and second heat exchangers may be,

the limiting groove is provided with a plurality of mud discharging through holes along the length direction at intervals, and the mud discharging through holes and the mud discharging grooves are mutually corresponding up and down.

According to the guide wheel assembly provided by the invention, the guide seat comprises a pair of side plates which are arranged at intervals, a space for accommodating the guide wheel is formed between the pair of side plates, and a pair of sliding grooves are correspondingly arranged on the inner surfaces of the pair of side plates.

According to the guide wheel assembly provided by the invention, the sliding groove comprises:

a first connection plate connected to an inner side of the side plate in a first direction;

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 invention, the pair of limit protrusions are respectively arranged on the inner surfaces of the first connecting plate and the second connecting plate, the mud discharging holes are arranged on the first connecting plate at positions corresponding to the mud discharging grooves, and the pair of limit grooves are arranged on the upper surface and the lower surface of each support.

According to the guide wheel assembly provided by the invention, the pair of limiting grooves are respectively arranged on the inner surfaces of the first connecting plate and the second connecting plate, the sludge discharge through holes are arranged in the limiting grooves, and the pair of limiting protrusions are arranged on the upper surface and the lower surface of each support.

According to the guide wheel assembly provided by the invention, the circumferential surface of the guide wheel is uniformly provided with a plurality of tooth-shaped structures.

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

the crawler belt is composed of a plurality of crawler plates which are sequentially connected and form a closed loop;

a drive wheel disposed within the track and located at one end of the track;

a guide wheel assembly as described in any one of the first aspects, disposed within the track and at the other end of the track.

In a third aspect, the present invention also provides a work machine comprising a track system as described in the second aspect.

The beneficial effects are that:

1. the invention provides a guide wheel assembly, which comprises a guide seat and guide wheels, wherein two sides of the guide seat are oppositely provided with a pair of sliding grooves; the guide wheel is rotatably arranged in the guide seat, the rotating shaft is arranged at the center of the guide wheel, the two ends of the rotating shaft are respectively connected with the support, the support is arranged in the sliding groove on the same side, the support is in sliding connection with the sliding groove along the first direction, the straightness and stability of the relative sliding of the support and the sliding groove can be ensured through the limiting groove and the limiting protrusion on the sliding connection surface between the sliding groove and the support, the support can be limited to move along the axial direction, and therefore, when the guide wheel receives axial force during steering, the structures on two sides of the guide seat can be connected together, and the expansion deformation caused by the action of the axial force on one side of the guide seat is avoided, so that the guide seat is caused to the condition of axial limiting failure of the guide wheel.

2. The upper surface and the lower surface through the support set up the spacing groove respectively, and the upper surface and the lower surface in the spout corresponds respectively and sets up spacing arch, and spacing arch is provided with the mud groove along its length direction interval, and the position that corresponds the mud groove on the first connecting plate is provided with the mud hole, is convenient for discharge outside the spout with earth, grit granule that can exist between spacing groove and the spacing arch to the relative slip of influence support and spout.

3. When the limiting groove is formed in the upper surface and the lower surface of the sliding groove, soil and sand stones are easily accumulated in the limiting groove on the lower surface, the mud discharging grooves are formed in the limiting protrusions at intervals, the mud discharging through holes are formed in the corresponding limiting grooves at intervals, soil and sand stones can be directly discharged from the limiting grooves, and the mud discharging effect can be achieved.

The invention also provides a running gear and a working machine, comprising a crawler belt, a driving wheel and the guiding wheel assembly described in the first aspect. During operation, through the concave-convex grafting fit mode that adopts between the spout of the support of guide wheel and guide holder, can realize the effect of direction, can restrict the support and remove along the axis direction and break away from the spout again, still play simultaneously and link together support and guide holder both sides structure's effect, make the guide holder receive axial deflection force, no longer be unilateral atress, effectively avoided the guide holder to receive the condition emergence of opening deformation that axial force formed.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a guide wheel assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of a guide wheel provided in one embodiment of the present invention;

fig. 3 is a schematic structural view of a guide holder according to an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of a chute according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a prior art guide wheel assembly.

Reference numerals:

1. a guide wheel; 2. a guide seat; 21. a side plate; 3. a chute; 4. a support; 5. a limit groove; 6. a limit protrusion; 31. a first connection plate; 32. a second connecting plate; 7. a sludge discharge groove; 8. a mud hole; 9. tooth-shaped structure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 5, a guiding wheel assembly in the prior art is composed of a guiding wheel 1, a guiding seat 2 and the like, sliding grooves 3 are formed in two sides of the guiding seat 2, the guiding wheel 1 can be limited in the left-right direction, the guiding wheel 1 is prevented from being separated from a track of a crawler, but when the guiding wheel is turned, the guiding seat 2 receives a large axial force, the axial force is transmitted to the guiding seat 2 through a support 4 of the guiding wheel 1, in the long-term use process, the guiding seat 2 can be opened and deformed, the position of the crawler can swing violently left and right along with the guiding wheel 1, and the matching failure of the wheel train of the whole chassis and the crawler causes the conditions of derailment and tooth jumping of the crawler.

A guide wheel assembly, a traveling mechanism, and a work machine according to an embodiment of the present invention are described below with reference to fig. 1 to 4.

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

The two sides of the guide seat 2 are oppositely provided with a pair of sliding grooves 3, the sliding grooves 3 extend along a first direction, and the first direction may be a vertical direction, a horizontal direction, or other directions, and in the embodiment shown in fig. 1, the first direction is a horizontal direction, that is, the pair of sliding grooves 3 are horizontally arranged on two sides of the guide seat 2.

The guide wheel 1 is rotatably arranged in the guide seat 2, a rotating shaft is arranged at the center of the guide wheel 1, and the guide wheel 1 is connected with the rotating shaft through a bearing so as to realize the rotation of the guide wheel 1 around the rotating shaft; the both ends of pivot are connected with support 4 respectively, and every support 4 sets up in spout 3 of homonymy, support 4 along first direction and spout 3 sliding connection, support 4 can slide along the length direction of spout 3 in spout 3 promptly.

The sliding connection surface of one of the support 4 and the chute 3 is provided with a limit groove 5, the sliding connection surface of the other one is provided with a limit protrusion 6, the limit groove 5 and the limit protrusion 6 extend along a first direction, the limit protrusion 6 is in sliding fit with the limit groove 5 and is used for limiting the support 4 to move along the axial direction, and when the guide wheel 1 is deflected by axial force, the support 4 can be synchronously deflected with the chute 3, so that the support 4 cannot be separated from the chute 3.

Compared with the prior art, the invention has the advantages that the two supports 4 of the guide wheel 1 are arranged in the chute 3, and the supports 4 can be in sliding fit with the chute 3 along the horizontal direction, so that the guide wheel 1 can move in the guide seat 2, and the impact and vibration of the track on the guide wheel 1 in the running process can be relieved; through spacing groove 5 and spacing protruding 6 that set up between spout 3 and support 4, can ensure the straightness accuracy and the stability of support 4 and spout 3 relative slip to can restrict support 4 and follow the axis direction and remove, so, when steering guide wheel 1 receives axial force, can link together the structure of guide holder 2 both sides, thereby avoid appearing the expansion deformation that guide holder 2 one side received axial force and formed, thereby lead to the condition that guide holder 2 was lost efficacy to the axial limit of guide wheel 1.

In this embodiment, as shown in fig. 2, the limiting groove 5 is disposed on the upper and lower surfaces of the support 4, and a pair of limiting protrusions 6 are disposed on the upper and lower surfaces of the chute 3 along the length direction of the chute 3, and the limiting protrusions 6 are slidably engaged with the limiting groove 5.

The limiting grooves 5 are respectively formed in the upper surface and the lower surface of the support 4, the limiting protrusions 6 are respectively and correspondingly arranged on the upper surface and the lower surface of the sliding groove 3, the limiting protrusions 6 are inserted into the limiting grooves 5 and are in sliding connection with each other, the support 4 can be limited to move along the axial direction, and the guide wheels 1 cannot be interfered to move in the guide seats 2; the upper surface and the lower surface of the support 4 are in concave-convex fit with the sliding groove 3, so that the support 4 can be prevented from being separated from the sliding groove 3 when the guide wheel 1 deflects, and when the guide wheel 1 receives axial force, the support 4 can be connected with the structures on two sides of the guide seat 2 through the structure, and the situation that the guide seat 2 fails in limiting the axial direction of the guide wheel 1 is avoided.

Further, since the upper surface and the lower surface in the chute 3 are respectively provided with the limit protrusions 6 correspondingly, in the working process of the working machine, impurities such as soil, sand particles and the like may exist between the limit grooves 5 and the limit protrusions 6, a plurality of sludge discharge grooves 7 are arranged at intervals along the length direction of the limit protrusions 6, the shape and structure of the sludge discharge grooves 7 are beneficial to the discharge of soil particles, such as a V shape, one side or two sides of the limit protrusions 6 are provided with a plurality of sludge discharge holes 8, the positions of the sludge discharge holes 8 and the sludge discharge grooves 7 correspond to each other, soil and sand particles which may exist between the limit grooves 5 and the limit protrusions 6 are discharged conveniently, and the soil and sand particles cannot be accumulated at the bottoms of the sludge discharge grooves 7.

In other embodiments, a pair of spacing protrusions 6 are disposed on the upper and lower surfaces of the support 4, a pair of spacing grooves 5 are disposed on the upper and lower surfaces of each chute 3 along the length direction of the chute 3, at this time, the spacing protrusions 6 are disposed with a plurality of mud discharging grooves 7 along the length direction thereof, the spacing grooves 5 are disposed with a plurality of mud discharging through holes along the length direction thereof, and the mud discharging through holes and the mud discharging grooves 7 are vertically corresponding to each other, so that mud and sand particles which may exist between the spacing grooves 5 and the spacing protrusions 6 can be discharged directly through the mud discharging through holes in the spacing grooves 5.

The support 4 may have a block structure, including but not limited to a rectangular block, and may provide a flat upper and lower surface, which is favorable for sliding fit between the support 4 and the chute 3, and the upper and lower surfaces of the support 4 are both flat, so as to facilitate setting of the limit groove 5 or the limit protrusion 6.

In other embodiments, the upper and lower surfaces of the support 4 may be provided with a limiting groove 5 and a limiting protrusion 6, and the corresponding upper and lower surfaces in the chute 3 may be provided with a limiting protrusion 6 and a limiting groove 5, so as to achieve an axial limiting effect on the support 4 and prevent the support 4 from being separated from the chute 3 along the axial direction.

Of course, this is merely an example, and is not intended to limit the scope of protection.

Referring to fig. 3, in the present embodiment, the guide holder 2 includes a pair of side plates 21 disposed at a distance, a space for accommodating the guide wheel 1 is formed between the pair of side plates 21, and a pair of the slide grooves 3 described above are provided on the inner surfaces of the pair of side plates 21.

In a specific embodiment, the chute 3 includes a first connecting plate 31 and a second connecting plate 32, where 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 is connected to the inner side of the side plate 21 along a first direction, and the first connecting plate 31 and the second connecting plate 32 are disposed at intervals along a second direction, which may be a vertical direction, a horizontal direction, or other directions, and in the embodiment shown in fig. 1, the second direction is perpendicular to the first direction and is a vertical direction.

Alternatively, the first connection plate 31 and the second connection plate 32 may be integrally formed with the body portion of the guide holder 2, welded, or connected by fasteners.

Preferably, the first connecting plate 31 and the second connecting plate 32 have the same size, and the first connecting plate 31 and the second connecting plate 32 are connected with the guide seat 2 through supporting connection structures, so as to improve the stress stability of the first connecting plate 31 and the second connecting plate 32; as shown in fig. 3, the support connection structure may be a support plate or a support block.

In the present embodiment, a pair of the limit protrusions 6 are respectively disposed on the inner surfaces of the first connection plate 31 and the second connection plate 32. The spacing protrusions 6 are provided with mud discharging grooves 7 at intervals along the length direction, as in the embodiment shown in fig. 4, the mud discharging grooves 7 can be V-shaped grooves, and soil and sand particles existing between the spacing grooves 5 and the spacing protrusions 6 can be conveniently discharged through the inclined surfaces of the V-shaped grooves and cannot be accumulated at the bottoms of the mud discharging grooves 7; in other embodiments, the two inclined surfaces of the mud discharging groove 7 can be provided with concave arc surfaces, which is also beneficial to discharging mud.

So set up, because the operational environment is different, can have impurity such as earth, grit granule between spacing groove 5 and the spacing arch 6, in order not to influence the relative slip of support 4 and spout 3, set up mud groove 7 through spacing on the spacing arch 6, the spacing groove 5 on mud groove 7 and the support 4 exists the space, along with the operation machinery is through Cheng Daoxiang round and is impacted or vibrate, along spout 3 removal in-process, be convenient for discharge earth, grit granule etc. through mud groove 7.

The above is merely illustrative, and is not intended to limit the scope of protection, the shape of the sludge discharge groove 7 is not limited to the above-mentioned form, other sludge discharge grooves 7 which are beneficial to discharge soil and which are not accumulated in the sludge discharge groove 7 are all in the scope of protection of the present invention.

Further, the first connecting plate 31 is provided with a mud hole 8 corresponding to the mud groove 7, the mud hole 8 is arranged at one side or two sides of the limit protrusion 6, and the bottom of the mud groove 7 is higher than the upper surface of the second connecting plate 32 or is flush with the upper surface of the second connecting plate 32, so that mud and sand can smoothly fall into the mud hole 8; the mud hole 8 may be rectangular, circular, polygonal, or other irregular shapes, and is used for guiding out the mud and sand discharged through the mud discharging groove 7 to the outside of the chute 3 through the mud hole 8.

So set up, through mud hole 8 with follow mud groove 7 exhaust earth granule from guide holder 2 discharge, effectively guarantee the guide wheel 1 on the guide holder 2 on the free slip of fore-and-aft direction, avoid the guide wheel 1 jamming condition emergence that earth grit led to.

In other embodiments, a pair of limiting grooves 5 are respectively disposed on inner surfaces (not shown in the drawings) of the first connecting plate 31 and the second connecting plate 32, and limiting protrusions 6 are disposed on upper and lower surfaces of the support 4, and the limiting protrusions 6 are slidably engaged with the limiting grooves 5. That is, the concave-convex matching mode is adopted, only the upper surface and the lower surface of the support 4 are provided with the protrusions, the upper surface and the lower surface of the chute 3 are provided with the limit grooves 5, and the limit protrusions 6 on the support 4 are inserted into the limit grooves 5 in the chute 3, so that sliding connection can be realized, and the situation that the axial limit failure of the guide seat 2 to the guide wheel 1 can be avoided.

Further, in this embodiment, the limit projection 6 is provided with sludge discharge grooves 7 at intervals along its length direction, and the limit groove 5 is provided with sludge discharge through holes at intervals along its length direction. Because spacing protruding 6 sets up the upper and lower surface at support 4, and spacing groove 5 sets up the internal surface at first connecting plate 31 and second connecting plate 32, and earth grit is piled up easily to spacing groove 5 on the first connecting plate 31, through setting up mud groove 7 at spacing protruding 6 interval, the corresponding mud through-hole that arranges that sets up at spacing groove 5 interval, can be directly with earth, grit discharge in spacing groove 5, has also realized the effect of mud discharging.

Referring to fig. 1 and 2, in the present embodiment, a plurality of tooth structures 9 are uniformly provided on the circumferential surface of the guide wheel 1. Specifically, the teeth are arranged on a limit flange in the middle of the outer circumferential surface of the guide wheel 1, and the limit flange is used for being matched with the crawler belt to prevent the guide wheel 1 from being separated from the crawler belt; the tooth-shaped structure 9 is arranged on the limit flange of the guide wheel 1, so that the guide wheel 1 can scrape or smash soil when being meshed with the track chain rail, and the phenomenon that the guide wheel 1 is derailed due to the fact that the soil in the track chain rail is compacted is avoided.

The embodiment of the invention provides a walking mechanism, which comprises: track, drive wheel and the aforesaid guide wheel assembly.

The crawler belt is composed of a plurality of crawler belt plates which are sequentially connected to form a closed loop, and the driving wheel is arranged in the crawler belt and is positioned at the rear end of the crawler belt; the guiding wheel 1 is arranged in the crawler belt and is positioned at the front end of the crawler belt.

The running mechanism with the guide wheel 1 can realize the guiding function and limit the support 4 to move along the axial direction to separate from the sliding groove 3 by adopting the concave-convex inserting matching mode between the support 4 of the guide wheel 1 and the sliding groove 3 of the guide seat 2 during operation, and simultaneously has the function of connecting the support 4 and the two sides of the guide seat 2 together, so that the guide seat 2 is stressed by axial deflection force, and the situation that the guide seat 2 is opened and deformed due to the axial force is effectively avoided.

The mud discharging groove 7 and the mud discharging hole 8 which are formed in the sliding groove 3 can effectively discharge mud and sand in the supporting seat 4 and the sliding groove 3, so that the guide wheel 1 can be effectively ensured to freely slide on the guide seat 2, and the situation that the guide wheel 1 is blocked due to mud and sand is avoided. The tooth-shaped structure 9 on the guide wheel 1 can effectively scrape and smash soil in the caterpillar track, is favorable for discharging the soil of the caterpillar track, and can effectively avoid the condition that the guide wheel 1 is derailed due to soil accumulation.

In addition, the running mechanism further comprises a tensioning device, a plurality of supporting wheels and a plurality of supporting chain wheels. The tensioning device is arranged in the crawler belt and connected with the bracket and used for buffering the guide wheels 1, the plurality of thrust wheels are arranged in the crawler belt at intervals and positioned below the space between the driving wheel and the guide wheels 1, and the plurality of support chain wheels are arranged in the crawler belt at intervals and positioned above the space between the driving wheel and the guide wheels 1.

The embodiment of the invention also provides a working machine, which comprises the travelling mechanism. The work machine is a crawler type work machine, such as an excavator or a crane.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "manner," "particular modes," or "some modes," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or mode 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 are not necessarily directed to the same embodiment or manner. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or ways. Furthermore, various embodiments or modes and features of various embodiments or modes described in this specification can be combined and combined by those skilled in the art without mutual conflict.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A guide wheel assembly, comprising:

the guide seat (2), two sides of the guide seat (2) are oppositely provided with a pair of sliding grooves (3), and the sliding grooves (3) extend along a first direction;

the device comprises a guide wheel (1), wherein two ends of a rotating shaft of the guide wheel (1) are respectively provided with a support (4), each support (4) is arranged in a sliding groove (3) on the same side of the support, and the supports (4) are in sliding connection with the sliding grooves (3); wherein, the liquid crystal display device comprises a liquid crystal display device,

the sliding connection surface of one of the support (4) and the sliding chute (3) is provided with a limiting groove (5), the sliding connection surface of the other sliding connection surface is provided with a limiting protrusion (6), the limiting groove (5) and the limiting protrusion (6) extend along the first direction, and the limiting protrusion (6) is in sliding fit with the limiting groove (5).

2. Guide wheel assembly according to claim 1, characterized in that the limit projection (6) is provided with a plurality of sludge discharge grooves (7) spaced apart along its length.

3. Guide wheel assembly according to claim 2, characterized in that one or both sides of the limit projection (6) are provided with a plurality of sludge discharge holes (8), which sludge discharge holes (8) correspond to the positions of the sludge discharge grooves (7); or alternatively, the first and second heat exchangers may be,

the limiting groove (5) is provided with a plurality of sludge discharge through holes along the length direction at intervals, and the sludge discharge through holes and the sludge discharge groove (7) are mutually corresponding up and down.

4. A guide wheel assembly according to claim 3, wherein the guide holder (2) comprises 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 sliding grooves (3) are correspondingly arranged on the inner surfaces of the pair of side plates (21).

5. The guiding wheel assembly according to claim 4, wherein the chute (3) comprises:

a first connection plate (31), the first connection plate (31) being connected to the inner side of the side plate (21) in a first direction;

the second connecting plate (32), the second connecting plate (32) is connected along the inboard of curb plate (21) along first direction, first connecting plate (31) with second connecting plate (32) are in the inboard of curb plate (21) is along the second direction interval setting.

6. The guide wheel assembly according to claim 5, wherein a pair of the limit protrusions (6) are provided on inner surfaces of the first connection plate (31) corresponding to the second connection plate (32), respectively, the sludge discharge holes (8) are provided on the first connection plate (31) at positions corresponding to the sludge discharge grooves (7), and a pair of the limit grooves (5) are provided on upper and lower surfaces of each of the holders (4).

7. The guide wheel assembly according to claim 5, wherein a pair of the limit grooves (5) are provided on inner surfaces of the first connection plate (31) corresponding to the second connection plate (32), respectively, the sludge discharge through hole is provided in the limit groove (5), and a pair of the limit protrusions (6) are provided on upper and lower surfaces of each of the holders (4).

8. The guiding 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 guiding wheel (1).

9. A running gear, characterized in that includes:

the crawler belt is composed of a plurality of crawler plates which are sequentially connected and form a closed loop;

a drive wheel disposed within the track and located at one end of the track;

the idler wheel assembly of any one of claims 1-8 disposed within the track and at the other end of the track.

10. A work machine comprising the running gear of claim 9.

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