CN218703578U - Track tensioning structure - Google Patents

Abstract

The application discloses a track tensioning structure, which comprises a driving wheel, a pair of driven wheels, a chassis support and an adjusting assembly; the driving wheel is rotatably arranged on the frame; the driven wheel is arranged on the chassis support, and the chassis support is arranged on the frame in an adjustable manner through the adjusting assembly, so that an installation structure for installing a crawler belt is formed between the driving wheel and the driven wheel; the adjustment assembly is adapted to adjust the tension of the mounted track by adjusting the position of the undercarriage bracket to change the circumference of the mounting structure of the track. The beneficial effect of this application: this application realizes the tensioning to the track through adjusting whole chassis support, compares traditional tension structure, and this application need not to set up extra take-up pulley to can reduce the installation degree of difficulty and manufacturing cost.

Description

Track tensioning texture

Technical Field

The application relates to driving tool technical field, especially relates to a track tensioning texture.

Background

A crawler is a vehicle that travels using a crawler instead of wheels. The vehicle has small unit pressure to the ground, small subsidence, strong adhesion capability and strong driving passing capability; common tracked vehicles include snowmobiles and the like. When the existing crawler is running, in order to guarantee the running stability, the tensioning degree of the crawler needs to be guaranteed to meet the use requirement. For tensioning of the track, the traditional method is mainly to provide a tensioning wheel to adjust the tensioning of the track. However, in the actual use process, the adjustment of the tension pulley is inconvenient due to the influence of the installation position and the installation space. Therefore, improvement of the tensioning structure of the track is urgently needed.

SUMMERY OF THE UTILITY MODEL

One of the objects of the present application is to provide a tensioning structure that can be outboard to facilitate track adjustment.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a track tensioning structure comprises at least one driving wheel, a pair of driven wheels, a chassis support and an adjusting assembly; the driving wheel is rotatably arranged on the frame; the driven wheel is mounted on the chassis support, and the chassis support is mounted on the frame in an adjustable position through the adjusting assembly, so that a mounting structure for mounting a crawler belt is formed between the driving wheel and the driven wheel; the adjustment assembly is adapted to adjust the tension of the mounted track by adjusting the position of the undercarriage bracket to change the circumference of the mounting structure of the track.

Preferably, the adjustment assembly comprises at least one shock absorbing member and at least one adjustment member; the shock absorption component and the adjusting component are hinged with the frame to form a supporting structure, and the chassis support is hinged with the supporting structure; the adjusting component is suitable for changing the position of the chassis support by adjusting the length of the adjusting component.

Preferably, a supporting shaft is arranged at the upper part of the chassis support, and the chassis support is hinged with the supporting structure through the supporting shaft, so that the supporting structure is triangular.

Preferably, the extending direction of the shock absorption part forms an included angle alpha with the vertical direction; the included angle between the extending direction of the adjusting component and the vertical direction is beta; wherein alpha is more than beta and less than 90 degrees.

Preferably, the adjustment assembly comprises two of said shock absorbing members and two of said adjustment members; the two sides of the frame are respectively provided with the supporting structure formed by the damping component and the adjusting component; the chassis support is hinged with the supporting structures on two sides of the frame through two ends of the supporting shaft.

Preferably, the adjusting part comprises a pair of connecting rods and an adjusting sleeve; one of the connecting rods is hinged with the frame, and the other connecting rod is hinged with the chassis support; the adjusting sleeve is respectively connected with the two connecting rods through an adjusting structure, so that the two connecting rods are driven to move relatively far away or close to each other by operating the adjusting sleeve.

Preferably, one end of the adjusting sleeve is in threaded connection with one of the connecting rods, and the other end of the adjusting sleeve is in threaded connection or rotary connection with the other connecting rod, so that the adjusting structure is formed; the adjusting sleeve is suitable for driving the two connecting rods to move relatively through rotating operation.

Preferably, the adjustment member further comprises at least one fastening nut; the fastening nut is matched with the threaded section on the connecting rod; when the length of the adjusting component is adjusted, the fastening nut is suitable for fastening the adjusting sleeve.

Preferably, the chassis bracket comprises a support assembly and a third bracket; the supporting component is suitable for being connected with the adjusting component, the third bracket is hinged with the front part of the supporting component, and the third bracket is elastically connected with the supporting component through a damping component; one driven wheel is mounted at the rear part of the supporting component, and the other driven wheel is mounted on the third bracket.

Preferably, the third bracket is hinged to the support assembly through a middle portion, the driven wheel is mounted at the front portion of the third bracket, and a guide wheel is mounted at the rear portion of the third bracket and is adapted to cooperate with the track.

Compared with the prior art, the beneficial effect of this application lies in:

(1) This application realizes the tensioning to the track through adjusting whole chassis support, compares traditional tension structure, and this application need not to set up extra take-up pulley to can reduce the installation degree of difficulty and manufacturing cost.

(2) Simultaneously, this application is through carrying out external with adjusting part to the tensioning of track is adjusted to convenience that can be further.

Drawings

Fig. 1 is a schematic view of the installation structure of the present invention.

Fig. 2 is a schematic view of the exploded state of the adjusting member of the present invention.

Fig. 3 is a schematic view of the mounting structure of the middle adjusting assembly of the present invention.

Fig. 4 is a schematic view of the adjusting state of the adjusting assembly of the present invention.

Fig. 5 is a schematic structural view of the middle chassis bracket of the present invention.

In the figure: the frame 100, the driving wheel 210, the driven wheel 220, the crawler 300, the chassis bracket 400, the support shaft 410, the first bracket 420, the second bracket 430, the third bracket 440, the guide wheel 450, the adjusting assembly 5, the shock absorbing part 51, the adjusting part 52, the connecting rod 521, the adjusting sleeve 522 and the fastening nut 523.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

A preferred embodiment of the present application, as shown in fig. 1 to 5, is a track tensioning structure including at least one drive wheel 210, a pair of driven wheels 220, a chassis support 400, and an adjustment assembly 5. The driving wheel 210 is rotatably mounted to the frame 100 and is generally located at the front of the frame 100; two driven wheels 220 are mounted to the chassis frame 400 at intervals, and the chassis frame 400 is adjustably mounted to the rear of the frame 100 by an adjusting assembly 5 such that a mounting structure for mounting the crawler 300 is formed between the driving wheel 210 and the driven wheels 220. The adjustment assembly 5 may adjust the tension of the mounted track 300 by adjusting the position of the undercarriage bracket 400 to change the circumference of the mounting structure of the track 300.

Specifically, the number of drive wheels 210 of a typical crawler is generally one or two, and the number of driven wheels 220 is generally two. When the driving wheel 210 is one, as shown in fig. 1, one driving wheel 210 and two driven wheels 220 may cooperate with each other to form a triangular mounting structure, and at this time, the driving wheel 210 and the driven wheels 220 are three end points of the mounting structure respectively. When the number of the driving wheels 210 is two, the two driving wheels 210 and the two driven wheels 220 may be mutually matched to form a quadrilateral mounting structure, and at this time, the two driving wheels 210 and the two driven wheels 220 are four end points of the mounting structure respectively.

Regardless of the triangular or quadrilateral mounting structure, the connection between the two driven wheels 220 can form one side of the mounting structure. The adjustment assembly 5 changes the overall circumference of the mounting structure by adjusting the position of the two driven wheels 220 relative to the driving wheel 210, thereby enabling the mounting structure to adjust the mounting length of the track 300. That is, when it is desired to loosen the track 300, the adjustment assembly 5 can reduce the overall circumference of the mounting structure; and when it is desired to tighten the track 300, the adjustment assembly 5 may increase the overall circumference of the mounting structure.

It can be understood that the tensioning adjustment of the track 300 in the present application is the position adjustment of the entire chassis frame 400, and compared with the conventional tensioning structure, the present application does not need to provide an additional tensioning wheel, so that the installation difficulty and the production cost can be reduced.

In one embodiment of the present application, as shown in fig. 1, 3 and 4, the adjustment assembly 5 includes at least one dampening member 51 and at least one adjustment member 52. The shock absorbing member 51 and the adjusting member 52 are hinged to the frame 100 to form a support structure, and the undercarriage bracket 400 can be hinged to the support structure, so that the adjusting member 52 can change the position of the undercarriage bracket 400 by adjusting the length thereof, thereby realizing the adjustment of the tension degree of the track 300.

It can be understood that if the frame 100 and the chassis frame 400 are rigidly connected by the adjusting assembly 5, the tracked vehicle is likely to generate jolt when running on a bumpy road surface, thereby affecting the driving experience. Therefore, in the present embodiment, the frame 100 and the chassis support 400 are flexibly supported and connected by the damping component 51 and the adjusting component 52, respectively, so that the tensioning adjustment of the crawler 300 can be realized while ensuring good driving experience of the crawler.

The specific structure of the shock absorbing member 51 is well known to those skilled in the art, and the common shock absorbing member 51 includes a spring shock absorber, an air shock absorber, a hydraulic shock absorber, and the like.

In this embodiment, the damping member 51 and the adjusting member 52 are mounted in various ways, including but not limited to the following two ways.

The installation method is as follows: as shown in fig. 1, 3 and 4, the upper portion of the chassis bracket 400 is provided with a support shaft 410. The shock absorbing member 51 and the adjusting member 52 are both hinged to the frame 100 through a first end, and the shock absorbing member 51 and the adjusting member 52 are spaced apart from each other at the first end. The shock-absorbing member 51 and the adjusting member 52 are both hinged with their axes coincident through the second end and the support shaft 410, so that the shock-absorbing member 51 and the adjusting member 52 can form a support structure in a triangular shape through the frame 100.

The second installation mode: the shock absorbing member 51 and the adjusting member 52 are both hinged to the frame 100 through a first end, and the shock absorbing member 51 and the adjusting member 52 are spaced apart from each other at the first end. The damping member 51 and the adjusting member 52 are hinged with the chassis bracket 400 through the second ends, and the damping member 51 and the adjusting member 52 are arranged at intervals; so that the shock-absorbing member 51 and the adjusting member 52 can form a support structure in a quadrangular shape by the vehicle frame 100 and the chassis bracket 400.

It is understood that both of the above-mentioned installation methods can meet the use requirements, and those skilled in the art can select the installation method based on the actual requirements. For convenience of the following description, the first mounting method is preferably adopted in this embodiment.

In the present embodiment, as shown in fig. 3, an included angle between the extending direction of the shock absorbing member 51 and the vertical direction is α; the angle between the extending direction of the adjusting part 52 and the vertical direction is beta; wherein alpha is more than beta and less than 90 degrees.

It is understood that the main function of the shock-absorbing member 51 is to support and absorb shock to the chassis bracket 400, and the main function of the adjusting member 52 is to adjust the position of the chassis bracket 400 and to position the shock-absorbing member 51. Therefore, the extension direction of the shock absorbing members 51 needs to be consistent or approximately consistent with the direction of the bumping impact applied to the crawler during the stroke, so as to ensure that the shock absorbing members 51 have sufficient component force to support the chassis frame 400 and absorb the bumping shock. The value of angle alpha is therefore generally from 0 to 15 deg., while the value of angle beta is generally from 60 deg. to 90 deg..

In order to ensure sufficient support strength and shock-absorbing capacity of the chassis bracket 400, the adjustment assembly 5 may include a plurality of shock-absorbing members 51 and a plurality of adjustment members 52. In the present embodiment, two damping members 51 and two adjusting members 52 are preferably used.

Specifically, as shown in fig. 5, two shock absorbing members 51 are respectively disposed on two sides of the vehicle frame 100, and two adjusting members 52 are also respectively disposed on two sides of the vehicle frame 100, so that a supporting structure formed by the shock absorbing members 51 and the adjusting members 52 can be formed on both sides of the vehicle frame 100. The chassis bracket 400 may be hinged to the support structure of both sides of the frame 100 by supporting both ends of the shaft 410.

It will be appreciated that the adjustment member 52 is located on a side portion of the frame 100, i.e., the adjustment member 52 is disposed externally, thereby further facilitating the operation of the adjustment member 52 by a driver or operator.

In one embodiment of the present application, as shown in fig. 2 and 4, the adjusting member 52 includes a pair of connecting rods 521 and an adjusting sleeve 522. One of the connecting rods 521 is hinged to the frame 100, and the other connecting rod 521 is hinged to the support shaft 410 of the chassis frame 400. The adjusting sleeve 522 is respectively connected with the two connecting rods 521 through an adjusting structure, so that the adjusting part 52 can adjust the length thereof by operating the adjusting sleeve 522 to drive the two connecting rods 521 to move relatively far away or close.

It can be understood that the adjusting component 52 can adjust the length thereof in various ways, and common adjusting ways include a screw thread adjusting way, a screw rod adjusting way and the like, and the screw thread adjusting way is preferably adopted in the embodiment.

In this embodiment, there are various specific setting modes for the adjustment structure, including but not limited to the following two.

The setting mode is as follows: as shown in fig. 2 and 4, both ends of the adjusting sleeve 522 are respectively screwed with two connecting rods 521 to form an adjusting structure. So that the two connecting rods 521 can be simultaneously driven to relatively move closer to or away from each other by rotating the operation adjustment sleeve 522.

The setting mode is two: one end of the adjusting sleeve 522 is in threaded connection with one of the connecting rods 521, and the other end of the adjusting sleeve 522 is in rotational connection with the other connecting rod 521, so that an adjusting structure is formed. So that the adjustment sleeve 522 can be rotationally operated to drive one of the link bars 521 to move relative to the other link bar 521.

It will be appreciated that, in order to facilitate manipulation of the adjustment sleeve 522, the adjustment sleeve 522 has a regular hexagonal cross-sectional shape such that the adjustment sleeve 522 may be manipulated by a tool such as a wrench.

It will also be appreciated that the length of the first set is greater than the length of the second set for the same angle of rotation of the adjustment sleeve 522. The specific setting mode can be selected according to actual needs, and the first setting mode is preferably adopted in the embodiment.

Specifically, taking the self-length extension of the adjusting member 52 as an example, the specific adjusting process is as follows:

the connecting rod 521 connected to the frame 100 is a first connecting rod, and the connecting rod 521 connected to the chassis frame 400 is a second connecting rod.

When the length of the adjusting member 52 is adjusted, the wrench is engaged with the adjusting sleeve 522, and the adjusting sleeve 522 is rotated by operating the wrench. Since the two connecting rods 521 are respectively hinged with the frame 100 and the chassis frame 400, the two connecting rods 521 cannot rotate; also, the first connecting rod is connected to the frame 100 such that the first connecting rod cannot move axially. So that during rotation of the adjustment sleeve 522, the adjustment sleeve 522 can also move axially away from the first connecting rod; at the same time, the second connecting rod can also be moved axially away relative to the adjusting sleeve 522.

It is understood that, as shown in fig. 4, the distance X by which the adjustment member 52 extends due to its length to drive the chassis frame 400 to move horizontally may be set. The moving distance of the chassis bracket 400 in the vertical direction is Y according to the force condition of the shock absorbing members 51. As can be understood from the above-mentioned angular relationship between the damping member 51 and the adjusting member 52, the value of X is much larger than that of Y, so that the circumference of the installation structure formed by the driving pulley 210 and the driven pulley 220 increases regardless of whether the chassis frame 400 moves upward or downward in the vertical direction.

In this embodiment, as shown in fig. 2 to 4, the adjusting member 52 further includes at least one fastening nut 523. The fastening nut 523 can be matched with the threaded section on the connecting rod 521; when the length adjustment of the adjustment member 52 is completed, the fastening nut 523 may fasten the adjustment sleeve 522.

It will be appreciated that after the adjustment member 52 has been adjusted in length, the connecting rod 521 and the adjustment sleeve 522 are generally loosely coupled, and thus are susceptible to being loosened by shock during the travel of the crawler. Therefore, after the length of the adjusting component 52 is adjusted, the adjusting sleeve 522 can be fastened through the fastening nut 523, and the stability of the whole structure of the adjusting component 52 can be ensured during the running process of the crawler.

It will also be appreciated that when the adjustment sleeve 522 is threaded with one of the tie rods 521 at one end, the fastening nut 523 is one in number and is threaded with the corresponding tie rod 521. And when the adjusting sleeve 522 is threadedly coupled to the two connecting rods 521 through both ends, the number of the fastening nuts 523 is two, and the fastening nuts are respectively threadedly engaged with the corresponding connecting rods 521.

In one embodiment of the present application, as shown in fig. 1 and 5, the undercarriage bracket 400 includes a support assembly and a third bracket 440. The support shaft 410 is fixedly installed to the support member such that the support member can be coupled by the support shaft 410 and the adjustment member 5. The third bracket 440 is hinged to the front of the support assembly, and the third bracket 440 is elastically connected to the support assembly by the shock-absorbing member 51. One of the driven wheels 220 is mounted to the rear of the support assembly and the other driven wheel 220 is mounted to a third bracket 440.

It will be appreciated that during travel of the crawler, driven wheels 220 located at the front of undercarriage brackets 400 are first subjected to jounce shocks. Therefore, in order to improve the running stability of the crawler, the driven wheel 220 positioned at the front portion of the undercarriage bracket 400 may be also provided with a shock absorber. That is, the front portion of the support assembly is hingedly mounted with the third bracket 440, and the third bracket 440 is connected to the support assembly through the shock-absorbing member 51. Thus, in the event of a crawler vehicle jolt, driven wheel 220 at the front of chassis bracket 400 may follow third bracket 440 for a yaw movement about the support assembly and compressing damping member 51, thereby achieving a primary damping of the jolt shock, followed by a secondary damping through damping member 51 between chassis bracket 400 and frame 100.

In this embodiment, as shown in fig. 1 and 5, the third frame 440 is hinged by a middle portion and a support assembly, the driven wheel 220 is installed at the front portion of the third frame 440, and the rear portion of the third frame 440 is installed with an idler 450, and the idler 450 can be engaged with the crawler 300.

It will be appreciated that as third bracket 440 causes the attached driven wheel 220 to deflect and damp about the support assembly, the circumference of the mounting structure for track 300 may also be reduced, thereby tending to cause track 300 to slacken. Therefore, to ensure that track 300 remains constantly tensioned during shock absorption, an idler may be provided at the end of third bracket 440 remote from the location where driven wheel 220 is mounted, such that as driven wheel 220 deflects upward with third bracket 440, idler 450 may deflect downward with third bracket 440 to achieve constant tensioning of track 300.

In this embodiment, the supporting component may be integrally formed, but the supporting component may be separately processed in consideration of the complexity of the processing.

Specifically, as shown in fig. 1 and 5, the support assembly includes a first bracket 420 and a second bracket 430. The inclined section and the horizontal section of the first bracket 420, and the inclined section and the horizontal section of the second bracket 430 are fixedly connected to the inclined section of the first bracket 420 in a crossing manner. The third bracket 440 is hinged to the lower end of the second bracket 430, and the support shaft 410 is fixedly mounted to the upper end of the second bracket 430; the driven wheel 220 is installed at the rear of the horizontal section of the first bracket 420.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. A track tensioning construction, comprising: at least one driving wheel, a pair of driven wheels, a chassis bracket and an adjusting component; the driving wheel is rotatably arranged on the frame; the driven wheel is mounted on the chassis support, and the chassis support is mounted on the frame in an adjustable position through the adjusting assembly, so that a mounting structure for mounting a crawler belt is formed between the driving wheel and the driven wheel; the adjustment assembly is adapted to change a circumference of a mounting structure of the track by adjusting a position of the undercarriage bracket.

2. The track tensioning construction of claim 1 wherein: the adjustment assembly includes at least one shock absorbing member and at least one adjustment member; the shock absorption component and the adjusting component are hinged with the frame to form a supporting structure, and the chassis support is hinged with the supporting structure; the adjusting component is suitable for changing the position of the chassis support by adjusting the length of the adjusting component.

3. The track tensioning construction of claim 2 wherein: the upper portion of chassis support is provided with the back shaft, chassis support through the back shaft with bearing structure articulates, so that bearing structure is triangle-shaped.

4. A track tensioning construction as claimed in claim 3, wherein: the included angle between the extending direction of the shock absorption component and the vertical direction is alpha; the included angle between the extending direction of the adjusting component and the vertical direction is beta; wherein alpha is more than beta and less than 90 degrees.

5. A track tensioning construction as claimed in claim 3, wherein: the adjusting assembly comprises two damping components and two adjusting components; the two sides of the frame are respectively provided with the supporting structure formed by the damping component and the adjusting component; the chassis support is hinged with the supporting structures on the two sides of the frame through the two ends of the supporting shaft.

6. A track tensioning construction according to any one of claims 2 to 5, wherein: the adjusting part comprises a pair of connecting rods and an adjusting sleeve; one of the connecting rods is hinged with the frame, and the other connecting rod is hinged with the chassis support; the adjusting sleeve is respectively connected with the two connecting rods through an adjusting structure, so that the two connecting rods are driven to move relatively far away or close to each other by operating the adjusting sleeve.

7. The track tensioning construction of claim 6 wherein: one end of the adjusting sleeve is in threaded connection with one of the connecting rods, and the other end of the adjusting sleeve is in threaded connection or rotary connection with the other connecting rod, so that the adjusting structure is formed; the adjusting sleeve is suitable for driving the two connecting rods to move relatively through rotating operation.

8. The track tensioning construction of claim 7 wherein: the adjustment member further comprises at least one fastening nut; the fastening nut is matched with the threaded section on the connecting rod; when the length of the adjusting component is adjusted, the fastening nut is suitable for fastening the adjusting sleeve.

9. The track tensioning construction of claim 1 wherein: the chassis support comprises a support assembly and a third support; the supporting component is suitable for being connected with the adjusting component, the third bracket is hinged with the front part of the supporting component, and the third bracket is elastically connected with the supporting component through a damping component; one driven wheel is mounted at the rear part of the supporting component, and the other driven wheel is mounted on the third bracket.

10. A track tensioning construction as claimed in claim 9, wherein: the third support is hinged to the supporting assembly through the middle portion, the driven wheel is mounted at the front portion of the third support, a guide wheel is mounted at the rear portion of the third support, and the guide wheel is suitable for being matched with the crawler.

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