CN213620016U - Tensioning device, travelling mechanism and tunneling equipment - Google Patents

Abstract

The utility model discloses a overspeed device tensioner, running gear and tunnelling equipment. Wherein, overspeed device tensioner includes: the crawler frame is provided with a slide way; the tensioning oil cylinder is connected with the crawler frame and is positioned at one end of the slideway; the guide wheel is arranged in the slideway; the bracket is arranged in the slide way and comprises a first bracket body and a second bracket body which are connected, the first bracket body is connected with the guide wheel, the second bracket body is positioned between the first bracket body and the tensioning oil cylinder, and the tensioning oil cylinder works to drive the bracket and the guide wheel to move along the slide way; the adjusting part is detachably arranged between the first frame body and the crawler frame. The utility model provides a overspeed device tensioner has reduced the fault rate of tensioning hydro-cylinder and bracket effectively, has improved the life of tensioning hydro-cylinder and bracket, and then improves the reliability of product.

Description

Tensioning device, travelling mechanism and tunneling equipment

Technical Field

The utility model relates to a tunnelling technical field particularly, relates to a overspeed device tensioner, a running gear and a heading equipment.

Background

At present, the types of the traveling mechanisms 200 ' of the excavating equipment are more, so that the tensioning devices 100 ' of the traveling mechanisms 200 ' are different. The guide wheel 130 ', the bracket 140', the tensioning cylinder 120 'and the adjusting part 150' are commonly used, and the specific arrangement methods include two methods:

the first method comprises the following steps: as shown in fig. 1, the guide wheel 130 'and the bracket 140' are screwed together and placed in the slideway of the track frame 110 ', the tensioning cylinder 120' is screwed together with the track frame 110 ', the tensioning cylinder 120' extends to slide the guide wheel 130 'and the bracket 140' in the track frame 110 'for tensioning, and the adjusting part 150' is inserted into the gap between the tensioning cylinder 120 'and the track frame 110' after tensioning.

And the second method comprises the following steps: as shown in fig. 2, the guide wheel 130 ' and the bracket 140 ' are screwed into the slideway of the track frame 110 ', the tensioning cylinder 120 ' is screwed into the track frame 110 ', the tensioning cylinder 120 ' extends to slide the guide wheel 130 ' and the bracket 140 ' in the track frame 110 ' for tensioning, and the adjusting part 150 ' is inserted into a gap between one end of the bracket 140 ' facing the tensioning cylinder 120 ' and the track frame 110 ' after tensioning.

The two tensioning devices 100' described above have the following problems, respectively:

with regard to the first tensioning device 100 ', when the heading equipment travels forwards, the force transmitted from the front end is transmitted to the tensioning cylinder 120 ' through the guide wheel 130 ' and the bracket 140 ', then transmitted to the bracket 140 ' through the tensioning cylinder 120 ', and finally transmitted to the track frame 110 ', and in the force transmission process, because the height difference exists between the center line of the guide wheel 130 ' and the center line of the tensioning cylinder 120 ', the tensioning cylinder 120 ' always receives an overturning moment, so that after the heading equipment is used for a period of time, the tensioning cylinder 120 ' has the risk of oil leakage and failure.

With the second tensioning device 100 ', when the heading equipment travels forwards, the force transmitted from the front end is transmitted to the bracket 140' through the guide wheel 130 ', then transmitted to the adjusting part 150' through the bracket 140 ', and finally transmitted to the track frame 110', and in the force transmission process, the bracket 140 'always receives a tipping moment due to the height difference between the center line of the guide wheel 130' and the center line of the bracket 140 ', so that the end part of the bracket 140' facing the tensioning cylinder 120 'and the transition part between the front part and the rear part of the bracket 140' can be deformed or broken after the heading equipment is used for a period of time.

Therefore, how to reduce the failure rate of the tensioning cylinder 120 ' and the bracket 140 ' becomes a technical problem to be solved by the tensioning device 100 '.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among prior art or the correlation technique at least, provide a overspeed device tensioner, a running gear and a heading equipment.

A first aspect of the present invention provides a tensioning device, including: the crawler frame is provided with a slide way; the tensioning oil cylinder is connected with the crawler frame and is positioned at one end of the slide way; the guide wheel is arranged in the slide way; the bracket is arranged in the slide way and comprises a first bracket body and a second bracket body which are connected, the first bracket body is connected with the guide wheel, the second bracket body is positioned between the first bracket body and the tensioning oil cylinder, and the tensioning oil cylinder works to drive the bracket and the guide wheel to move along the slide way; the adjusting part is detachably arranged between the first frame body and the crawler frame.

Further, the adjusting portion includes: the base plate is movably arranged between the first frame body and the crawler frame; the locking part is arranged on one side, away from the first frame body, of the base plate, and is provided with a first positioning part; wherein, first support body is provided with the first spacing portion of first locating part looks adaptation.

Further, along the direction perpendicular to the tensioning oil cylinder stretches out and draws back, first support body protrusion in the second support body.

Furthermore, a second limiting part is arranged on the side wall of the second frame body, and the second limiting part is connected with the first frame body; the adjusting part is provided with a second positioning part matched with the second limiting part.

Furthermore, the second limiting part is of a groove structure, and the second positioning part is of a notch structure.

Further, the second frame body is of a cylindrical structure; and/or the number of said pads is at least one.

Further, the tensioning device further comprises: a connecting member; the first limiting portion is a threaded hole, the first positioning portion is a mounting hole, and the connecting piece penetrates through the mounting hole to be connected with the threaded hole.

Further, the track frame includes: the track frame body is provided with an operation opening, and the operation opening is distributed along a path where the first frame body moves along the slide and is opposite to the first frame body.

The second aspect of the utility model provides a running gear, include: a traveling wheel; and the tensioning device of any technical scheme of the first aspect, the walking wheel is connected with the track frame.

The utility model discloses a third aspect provides a heading equipment, include: an apparatus main body; and the tensioning device according to any one of the above first aspect or the traveling mechanism according to any one of the second aspect, wherein the equipment main body is connected to the track frame.

The utility model provides a tensioning device, track frame are provided with the slide, and the tensioning hydro-cylinder is connected with track frame and is located the one end of slide, and leading wheel and bracket all set up in the slide, and the bracket is including the first support body and the second support body that are connected. When the tunneling equipment travels forwards, the acting force transmitted from the front end is transmitted to the first frame body of the bracket through the guide wheel and then transmitted to the track frame through the first frame body through the adjusting part, and the tensioning oil cylinder does not bear the action of the acting force in the process of transmitting the acting force, so that a gap between the tensioning oil cylinder and the track frame of the adjusting part in the related technology is avoided, the tensioning oil cylinder has the risk of oil leakage failure due to the fact that the central line of the guide wheel and the central line of the tensioning oil cylinder have a height difference, the fault rate of the tensioning oil cylinder is greatly reduced, the service life of the tensioning oil cylinder is prolonged, and the reliability of a product is improved.

Meanwhile, the adjusting part is positioned between the first frame body and the track frame, although the height difference exists between the central line of the guide wheel and the central line of the bracket, the acting force is transmitted to the first frame body of the bracket and then acts on the track frame, namely the second frame body of the bracket is not acted by the acting force, the risk that the adjusting part is arranged in a gap between one end (the second frame body) of the bracket facing the tensioning oil cylinder and the track frame in the related technology and the transition part of the front part (the end part facing the tensioning oil cylinder) of the bracket and the front part and the rear part of the bracket can be deformed or broken due to the height difference between the central line of the guide wheel and the central line of the bracket is avoided, the failure rate of the bracket is greatly reduced, the service life of the bracket is prolonged, and the reliability and the service life of the tensioning device.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

the above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a partial schematic structural view showing a running gear provided in a first embodiment in the related art;

fig. 2 is a partial schematic structural view showing a traveling mechanism provided in a second embodiment in the related art;

fig. 3 is a partial schematic structural view of a traveling mechanism provided according to an embodiment of the present invention;

fig. 4 shows a schematic structural view of a perspective of a bracket provided according to an embodiment of the present invention;

FIG. 5 is a schematic structural view showing another perspective of the bracket of the embodiment of FIG. 4;

fig. 6 shows a schematic structural diagram of an adjusting portion provided according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:

100 ' tensioning device, 110 ' track frame, 120 ' tensioning oil cylinder, 130 ' guide wheel, 140 ' bracket, 142 ' first frame body, 144 ' second frame body, 146 ' first limiting part, 148 ' second limiting part, 150 ' adjusting part, 152 ' backing plate, 154 ' locking part, 156 ' first positioning part, 158 ' second positioning part and 200 ' running gear.

Wherein, the correspondence between the reference numbers and the part names in fig. 3 to 6 is:

100 a tensioning device, 110 a track frame, 120 a tensioning oil cylinder, 130 a guide wheel, 140 a bracket, 142 a first frame body, 144 a second frame body, 146 a first limiting part, 148 a second limiting part, 150 an adjusting part, 152 a cushion plate, 154 a locking part, 156 a first positioning part, 158 a second positioning part and 200 a walking mechanism.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A tensioner 100, a running gear 200 and a ripping apparatus provided according to some embodiments of the present invention will be described below with reference to fig. 3 to 6.

A first aspect of the present invention provides a tensioning device 100, including: the crawler frame 110, the crawler frame 110 is provided with a slide; a tensioning cylinder 120 connected to the track frame 110 and located at one end of the slide; a guide wheel 130 arranged in the slideway; the bracket 140 is arranged in the slideway, the bracket 140 comprises a first bracket body 142 and a second bracket body 144 which are connected, the first bracket body 142 is connected with the guide wheel 130, the second bracket body 144 is positioned between the first bracket body 142 and the tensioning oil cylinder 120, and the tensioning oil cylinder 120 works to drive the bracket 140 and the guide wheel 130 to move along the slideway; the adjusting part 150 is detachably disposed between the first frame body 142 and the track frame 110.

As shown in fig. 3, the present invention provides a tensioning device 100 for a traveling mechanism 200 of a heading machine, wherein the tensioning device 100 includes a track frame 110, a tensioning cylinder 120, a guide wheel 130, a bracket 140 and an adjusting portion 150. The track frame 110 is provided with a slide, specifically, the slide is located inside the track frame 110, the tensioning cylinder 120 is connected to the track frame 110 and located at one end of the slide, and the guide wheel 130 and the bracket 140 are both arranged in the slide. Specifically, the bracket 140 includes a first frame 142 and a second frame 144 connected to each other, the first frame 142 is connected to the guide wheel 130, and the second frame 144 is located between the first frame 142 and the tensioning cylinder 120, so that the tensioning cylinder 120 operates to slide the guide wheel 130 in the slideway via the second frame 144 and the first frame 142 to achieve tensioning. When the tension is in place, i.e. when the position of the idler 130 in the slideway ensures that the track can be transported smoothly on the track frame 110, by detachably disposing the adjusting part 150 between the first frame body 142 and the track frame 110, when the heading device travels forwards, the acting force transmitted from the front end is transmitted to the first frame body 142 of the bracket 140 through the guide wheel 130, and then transmitted to the track frame 110 through the adjusting part 150 from the first frame body 142, during the process of transferring the acting force, the tensioning cylinder 120 does not bear the action of the acting force, and furthermore, the risk of oil leakage and failure of the tensioning oil cylinder due to the fact that the adjusting part is arranged in a gap between the tensioning oil cylinder and the crawler frame in the related technology and the height difference exists between the center line of the guide wheel and the center line of the tensioning oil cylinder is avoided, the fault rate of the tensioning oil cylinder is greatly reduced, the service life of the tensioning oil cylinder is prolonged, and the reliability of the tensioning device is improved.

Meanwhile, since the adjusting part 150 is located between the first frame body 142 and the track frame 110, although there is a height difference between the center line of the guide wheel 130 and the center line of the carriage 140, but the force is applied to the track frame 110 after being transferred to the first frame body 142 of the carriage 140, that is, the second frame body 144 of the bracket 140 is not acted by the acting force, so that the risk that the front part of the bracket (the end part facing the tensioning cylinder) and the transition part between the front part and the rear part of the bracket are deformed or broken due to the height difference between the central line of the guide wheel and the central line of the bracket when the adjusting part is arranged in the gap between the end of the bracket facing the tensioning cylinder (the second frame body) and the track frame in the related art is avoided, the reliability of the bracket is greatly improved, the service life of the bracket is prolonged, and then improved overspeed device tensioner's reliability and life, the fault rate of product that has reduced.

In a preferred embodiment of the present invention, the adjusting portion 150 includes: the pad 152 is movably arranged between the first frame body 142 and the track frame 110; the locking part 154 is arranged on one side of the backing plate 152, which faces away from the first frame body 142, and the locking part 154 is provided with a first positioning part 156; the first frame 142 is provided with a first position-limiting portion 146 adapted to the first positioning portion 156.

In this embodiment, as shown in fig. 6, the adjusting part 150 includes a pad 152 and a locking part 154, wherein the pad 152 is movably installed between the first frame 142 and the track frame 110, that is, the pad 152 can be placed in the gap between the first frame 142 and the track frame 110, and the placed pad 152 can be removed from the gap between the first frame 142 and the track frame 110. The locking portion 154 is disposed on a side of the pad 152 facing away from the first frame 142, i.e., the locking portion 154 is disposed adjacent to the track frame 110, and the pad 152 is disposed between the first frame 142 and the locking portion 154. Be provided with first locating part 156 through locking portion 154, first support body 142 is provided with first spacing portion 146, because first locating part 156 and first spacing portion 146 are the looks adaptation, and then be favorable to installing locking portion 154 on bracket 140 fast, reliably and reliably with bracket 140 reliable connection through first locating part 156 and first spacing portion 146, and because backing plate 152 is located between first support body 142 and locking portion 154, and then can make whole regulating part 150 and bracket 140's first support body 142 reliably be connected, be favorable to having guaranteed good tensioning effect.

Further, the number of the pad 152 is at least one, that is, the number of the pad 152 may be one, or may be multiple, and the different number of the pads 152 can satisfy gaps of different sizes between the first frame body 142 and the track frame 110, so that the pad 152 and the locking portion 154 can fill the gap between the first frame body 142 and the track frame 110, thereby ensuring a good tensioning effect, and expanding the application range of the product. Specifically, the locking portion 154 is a plate-shaped structure, and if the locking portion 154 is a locking plate, it is understood that the locking portion 154 may also be other structures that meet the requirement, and the present application is not limited in particular.

In a preferred embodiment, the first frame 142 protrudes from the second frame 144 along a direction perpendicular to the extension direction of the tensioning cylinder 120.

In this embodiment, the first frame 142 protrudes from the second frame 144 in a direction perpendicular to the extension direction of the tensioning cylinder 120, that is, the first frame 142 and the second frame 144 form a step structure. Specifically, it is defined that an end of the first frame 142 is a first end and an end of the second frame 144 is a second end of two ends of the first frame 142 and the second frame 144 connected to each other, wherein a sectional area of the first end is larger than a sectional area of the second end in a direction perpendicular to an extension and contraction direction of the tensioning cylinder 120, so that the first frame 142 and the second frame 144 form a step structure. Furthermore, when the tensioning is performed, the adjusting part 150 can avoid the second frame body 144 from directly contacting the first frame body 142, so that when the tunneling device travels forwards, the acting force transmitted from the front end does not act on the second frame body 144, and does not act on the transition position between the second frame body 144 and the first frame body 142, but directly acts on the first frame body 142.

It is understood that the first frame 142 and the second frame 144 are integrally formed, in particular, the bracket 140 is a casting, and it is understood that the first frame 142 and the second frame 144 may be processed into the bracket 140 in other manners as required.

Further, the second frame body 144 is a cylindrical structure, and the edge of the cylindrical structure is less, and has a smooth curved surface, so that it is beneficial to reduce accidental injury of the edge to the operator when the operator installs the adjusting portion 150 between the first frame body 142 and the track frame 110, and further, the installation is convenient and the assembly safety is improved. It is understood that the second frame 144 may have other shapes to meet the requirement, and the present application is not limited thereto.

In a preferred embodiment of the present invention, the side wall of the second frame 144 is provided with a second position-limiting portion 148, and the second position-limiting portion 148 is connected to the first frame 142; the adjusting portion 150 is provided with a second positioning portion 158 adapted to the second limiting portion.

In this embodiment, as shown in fig. 4 and 5, the second frame body 144 is provided with a second limiting portion 148, the second limiting portion 148 is located on a side wall of the second frame body 144 and connected with the first frame body 142, the adjusting portion 150 is provided with a second positioning portion 158, and the adjusting portion 150 can be quickly and conveniently placed in or taken out of a gap between the first frame body 142 and the track frame 110 through the adaptation of the second limiting portion 148 and the second positioning portion 158, which is beneficial to improving the tensioning efficiency of the tensioning device 100 and providing the operational reliability of the excavating equipment.

It can be understood that the adjusting portion 150 is provided with the second positioning portion 158, and in some embodiments of the present application, since the adjusting portion 150 includes the pad 152 and the locking portion 154, which are both located between the first frame body 142 and the track frame 110, the second positioning portion 158 is provided on both the pad 152 and the locking portion 154, so as to improve the efficiency of assembling and disassembling the pad 152 and the locking portion 154. Specifically, the locking portion 154 may be a locking plate, or may be another structure that meets the requirement.

Further, the second limiting portion 148 is a groove structure, the second positioning portion 158 is a notch structure, the groove structure connected with the first frame body 142 is arranged on the side wall of the second frame body 144, the adjusting portion 150 is provided with the notch structure, and the notch structure and the groove structure are matched, so that the adjusting portion 150 is conveniently and quickly mounted on the side portion of the second frame body 144 and located between the first frame body 142 and the track frame 110, that is, the second positioning portion 158 on the adjusting portion 150 and the second limiting portion 148 on the second frame body 144 form pre-positioning, and the dismounting efficiency of the adjusting portion 150 is improved. It is understood that the second position-limiting portion 148 and the second positioning portion 158 may be other structures that meet the requirement, and the application is not particularly limited.

Specifically, the adjusting portion 150 includes a pad 152 and a locking portion 154, that is, the pad 152 is provided with a notch structure, the locking portion 154 is provided with a notch structure, and a groove structure is provided on a side wall of the second frame body 144, so that the pad 152 and the locking portion 154 can be quickly placed on the second frame body 144 and located between the first frame body 142 and the track frame 110 by matching the notch structure and the groove structure.

Further, when the second support body 144 is a cylindrical structure, the number of the groove structures is two, and the two groove structures are arranged relatively, the backing plate 152 can be rapidly sleeved outside the second support body 144 through the matching of the two sides of the gap structure of the backing plate 152 and the two groove structures, and the locking part 154 can be rapidly sleeved outside the second support body 144 through the matching of the two sides of the gap structure of the locking part 154 and the two groove structures.

In a preferred embodiment of the present invention, the tensioning device 100 further comprises: a connecting member; the first position-limiting portion 146 is a threaded hole, the first positioning portion 156 is a mounting hole, and the connecting member passes through the mounting hole and is connected with the threaded hole.

In this embodiment, the tensioning device 100 further includes a connecting member, the first limiting portion 146 is a threaded hole, the first positioning portion 156 is a mounting hole, and the connecting member passes through the mounting hole and is connected with the threaded hole, so that the locking portion 154 can be reliably connected with the first frame body 142, and the backing plate 152 between the locking portion 154 and the first frame body 142 can be reliably fixed, thereby ensuring a good tensioning effect and improving the reliability of the operation of the excavating equipment.

Specifically, the connecting member is a bolt, and it is understood that the connecting member may also be other connecting structures meeting the requirement, and the application is not particularly limited.

In a preferred embodiment, the track frame 110 comprises: the track frame body is provided with an operation opening, and the operation opening is distributed along a moving path of the first frame body 142 in the slide way and is arranged opposite to the first frame body 142.

In this embodiment, the track frame 110 includes a track frame body, wherein the slide is located inside the track frame body, that is, the bracket 140 located in the slide is also located inside the track frame body, and by providing the operation opening in the track frame body, the operation opening is distributed along a path of the first frame body 142 moving on the slide and is disposed opposite to the first frame body 142, so that through the operation opening, an operator can conveniently and quickly install the adjusting portion 150 in a gap between the first frame body 142 and the track frame body, or detach the adjusting portion 150 from the gap between the first frame body 142 and the track frame body through the operation opening, which facilitates operation and is suitable for popularization.

Specifically, when the tensioning cylinder 120 extends to a tensioning position, the pad 152 of the adjusting part 150 is pre-positioned by the second limiting part 148 and the second positioning part 158 through the operation opening of the track frame body and is installed between the first frame body 142 and the track frame body, the locking part 154 is pre-positioned by the second limiting part 148 and the second positioning part 158 and is installed between the pad 152 and the track frame body, the connecting piece penetrates through the installation hole of the locking part 154 to be connected with the threaded hole of the first frame body 142, the pad 152 can be fixed on the first frame body 142 through the locking part 154, and the locking part 154 and the first frame body 142 can be directly and reliably connected, so that a good tensioning effect can be ensured, and the operation reliability of the tunneling device can be improved.

A second aspect of the present invention provides a traveling mechanism 200, including: a traveling wheel; and the tensioning device 100 of any of the embodiments of the first aspect, the road wheels are connected with the track frame 110.

The utility model provides a running gear 200, as shown in fig. 3, including the overspeed device tensioner 100 of walking wheel and the above-mentioned arbitrary embodiment of first aspect, the walking wheel is connected with track frame 110. Since the traveling mechanism 200 provided by the present application includes the tensioning device 100 of any embodiment of the first aspect, all the beneficial technical effects of the tensioning device 100 are achieved, and are not repeated herein.

The utility model discloses a third aspect provides a heading equipment, include: an apparatus main body; and the tensioner 100 of any one of the above embodiments of the first aspect or the traveling mechanism 200 of any one of the above embodiments of the second aspect, wherein the equipment main body is connected to the track frame 110.

The utility model provides a heading equipment, including the overspeed device tensioner 100 of any embodiment of above-mentioned first aspect or the running gear 200 of any embodiment of above-mentioned second aspect of equipment main part, wherein, the equipment main part is connected with track frame 110. Since the heading device provided by the present application includes the tensioning device 100 of any embodiment of the first aspect or the traveling mechanism 200 of any embodiment of the second aspect, all the beneficial technical effects of the tensioning device 100 or the traveling mechanism 200 are achieved, and detailed description thereof is omitted here.

In one embodiment provided herein, as shown in fig. 3 to 6, the tensioner 100 includes a guide wheel 130, a bracket 140, a track frame 110, a tensioning cylinder 120, and an adjusting portion 150, the adjusting portion includes a pad 152 and a locking portion 154, the bracket 140 includes a first frame body 142 and a second frame body 144 that are integrally formed, and form a step structure, the first frame body 142 protrudes from the second frame body 144, and the second frame body 144 is a cylindrical structure. Specifically, the guide wheel 130 and the bracket 140 are combined through bolts and then placed into a slide way of the track frame 110, the tensioning cylinder 120 and the track frame 110 are combined together, when the tunneling equipment needs tensioning, the tensioning cylinder 120 extends to enable the guide wheel 130 and the bracket 140 to slide in the slide way to achieve the tensioning purpose, and after the tensioning is in place, the backing plate 152 is inserted into a gap between the first frame body 142 of the bracket 140 and the track frame 110 and is fixed through a locking plate (a locking part 154).

Wherein, the second frame body 144 of the bracket 140 is provided with a groove structure, the backing plate 152 and the locking portion 154 are both provided with a notch structure adapted to the groove structure, and the backing plate 152 and the locking portion 154 can be rapidly sleeved outside the second frame body 144 through the groove structure and the notch structure. Further, the locking part 154 is provided with a mounting hole, the first frame body 142 of the bracket 140 is provided with a threaded hole matched with the mounting hole, the locking part 154 can be fixed on the first frame body 142 by bolts passing through the mounting hole to be connected with the threaded hole, and the backing plate 152 is reliably and tightly located between the first frame body 142 and the locking part 154.

According to the tensioning device 100 provided by the application, when the heading machine moves forwards, the force transmitted from the front end is transmitted to the first frame body 142 of the bracket 140 through the guide wheel 130, then transmitted to the backing plate 152 and the locking part 154 through the first frame body 142 of the bracket 140, and finally transmitted to the track frame 110, in the force transmission process, the tensioning cylinder 120 does not bear any force, meanwhile, although the height difference exists between the center line of the guide wheel 130 and the center line of the bracket 1403, the acting force acts on the track frame 110 after being transmitted to the first frame body 142 of the bracket 140, and the second frame body 144 (the front end cylindrical part) of the bracket 140 does not bear the force, so that the fault rate of the tensioning device 100 is reduced, the service lives of the tensioning cylinder 120 and the bracket 140 are prolonged, the reliability and the service life of the tensioning device 100 are further improved, and the tensioning device 100 is suitable for popularization and application.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically defined, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A tensioner, comprising:

the crawler frame is provided with a slide way;

the tensioning oil cylinder is connected with the crawler frame and is positioned at one end of the slide way;

the guide wheel is arranged in the slide way;

the bracket is arranged in the slide way and comprises a first bracket body and a second bracket body which are connected, the first bracket body is connected with the guide wheel, the second bracket body is positioned between the first bracket body and the tensioning oil cylinder, and the tensioning oil cylinder works to drive the bracket and the guide wheel to move along the slide way;

the adjusting part is detachably arranged between the first frame body and the crawler frame.

2. The tensioner as in claim 1, wherein the adjustment portion comprises:

the base plate is movably arranged between the first frame body and the crawler frame;

the locking part is arranged on one side, away from the first frame body, of the base plate, and is provided with a first positioning part;

wherein, first support body is provided with the first spacing portion of first locating part looks adaptation.

3. The tensioner as in claim 1,

along the direction perpendicular to the tensioning oil cylinder stretches out and draws back, first support body protrusion in the second support body.

4. The tensioner as in claim 1,

a second limiting part is arranged on the side wall of the second frame body and connected with the first frame body;

the adjusting part is provided with a second positioning part matched with the second limiting part.

5. The tensioner as in claim 4,

the second limiting part is of a groove structure, and the second positioning part is of a notch structure.

6. The tensioner as in claim 2,

the second frame body is of a cylindrical structure; and/or

The number of the backing plates is at least one.

7. The tensioner as in claim 2, further comprising:

a connecting member;

the first limiting portion is a threaded hole, the first positioning portion is a mounting hole, and the connecting piece penetrates through the mounting hole to be connected with the threaded hole.

8. The tensioner as in any one of claims 1-5, wherein the track frame comprises:

the track frame body is provided with an operation opening, and the operation opening is distributed along a path where the first frame body moves along the slide and is opposite to the first frame body.

9. A travel mechanism, comprising:

a traveling wheel; and

the tensioner of any one of claims 1 to 8, the road wheel being connected with the track frame.

10. A heading device, comprising:

an apparatus main body; and

the tensioning device of any one of claims 1 to 8; or

The running gear of claim 9;

wherein the equipment main body is connected with the track frame.

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