CN217098365U - Bearing device and single-rod cutting machine - Google Patents

Abstract

The present disclosure relates to a bearing device and a single-bar cutting machine, the bearing device includes: the device comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with an accommodating cavity which is communicated along a first direction and used for accommodating a flat rod; the first bearing assembly is arranged in the accommodating cavity and is abutted against the side wall of the flat rod; and the adjusting assembly comprises an adjusting block, the adjusting block is abutted with one side of the first bearing assembly, which is far away from the flat rod, wherein the first bearing assembly moves between a first position and a second position in a second direction, the first bearing assembly is kept abutted with the side wall of the flat rod in the second direction through the movement of the adjusting block, and the first direction is perpendicular to the second direction. According to the first bearing assembly, the first bearing assembly is always kept to abut against the side wall of the flat rod in the second direction through the movement of the adjusting block, the first bearing assembly is prevented from being separated from the side wall of the flat rod, and the first bearing assembly is prevented from scratching the side wall of the flat rod.

Description

Bearing device and single-rod cutting machine

Technical Field

The disclosure relates to the technical field of cutting equipment, in particular to a bearing device and a single-rod cutting machine.

Background

With the development of the modern machining industry, the requirements on the quality and precision of ceramic tiles and glass cutting are continuously improved, and the requirements on improving the production efficiency, reducing the production cost and having a high-intelligent automatic cutting function are also improved. Meanwhile, in the cutting process, the requirement for prolonging the service life of the cutting machine is gradually increased.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a bearing device and a single bar cutting machine.

According to a first aspect of embodiments of the present disclosure, there is provided a bearing device including: the device comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with an accommodating cavity which is communicated along a first direction and used for accommodating a flat rod; the first bearing assembly is arranged in the accommodating cavity and is abutted against the side wall of the flat rod; and the adjusting assembly comprises an adjusting block, the adjusting block is abutted with one side of the first bearing assembly far away from the flat bar, the first bearing assembly moves between a first position and a second position in a second direction, the first bearing assembly is kept abutted with the side wall of the flat bar in the second direction through the movement of the adjusting block, and the first direction is vertical to the second direction.

In some embodiments, the adjusting block is provided with an adjusting inclined plane and a baffle plate, the adjusting inclined plane comprises a high end and a low end, the baffle plate is arranged at the low end, and the inclination direction of the adjusting inclined plane is consistent with the moving direction of the adjusting block; the high end of the adjustment ramp abuts the first bearing assembly when the first bearing assembly is in the first position and the low end of the adjustment ramp abuts the first bearing assembly when the first bearing assembly is in the second position.

In some embodiments, the adjusting assembly further comprises an elastic member connected to a lower end of the adjustment slope and elastically deformed in the first direction; the adjusting inclined surface of the adjusting block enables the first bearing assembly to be kept in abutment with the side wall of the flat rod in the second direction through the tension force of the elastic piece in the first direction.

In some embodiments, the first bearing assembly comprises: the first pin shaft is arranged along the vertical direction; the first bearing comprises an upper bearing and a lower bearing, and the upper bearing and the lower bearing are sleeved at the upper end and the lower end of the first pin shaft; and the two buffer parts are respectively arranged at the upper end of the upper bearing and the lower end of the lower bearing.

In some embodiments, two first bearing assemblies are respectively disposed on two sides of the inner wall of the housing, and the first bearing assemblies on the two sides are symmetrically disposed along the second direction.

In some embodiments, the adjustment assembly comprises: the two adjusting blocks are respectively abutted with the first pin shafts of the two first bearing assemblies positioned on one side of the inner wall of the shell; two ends of the elastic piece are respectively connected with the lower ends of the adjusting inclined planes of the two adjusting blocks; when the first bearing assembly is in the first position, the tensioning force of the elastic piece enables the two adjusting blocks to be close to each other, and the high end of the adjusting inclined plane is abutted to the first pin shaft; when the first bearing assembly is at the second position, the first pin shaft extrudes the adjusting inclined surface, so that the two adjusting blocks are far away from each other, and the lower end of the adjusting inclined surface is abutted against the first pin shaft.

In some embodiments, the housing comprises: the second shell and the first shell are symmetrically arranged along the second direction; and the adjusting shell is clamped between the first shell and the second shell and is used for adjusting the width of the shell in the second direction.

In some embodiments, the bearing device further comprises a second bearing assembly, the first bearing assembly being disposed inside the housing and abutting the upper end of the flat bar.

In some embodiments, the bearing assembly further comprises a third bearing assembly disposed within the housing and abutting the lower end of the flat bar.

According to a second aspect of the embodiments of the present disclosure, there is provided a single bar cutter including: a flat bar; the bearing device according to the first aspect, which is fitted around the flat bar; the handle rolls along the flat rod through the first bearing assembly and is pivoted with the shell, so that the handle rotates up and down relative to the flat rod.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the first bearing assembly moves between the first position and the second position in the second direction, and the first bearing assembly can be always kept in abutting connection with the side wall of the flat rod in the second direction through the movement of the adjusting block, so that the first bearing assembly is prevented from being separated from the side wall of the flat rod, the first bearing assembly is prevented from scratching the side wall of the flat rod, and the service life of the bearing device and the flat rod matched with the bearing device is prolonged.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is an assembled exploded view of a single bar cutter according to an exemplary embodiment.

Fig. 2 is a schematic structural view of a single bar cutter according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating another view of a single bar cutter according to an exemplary embodiment.

Fig. 4 is a schematic structural view illustrating an assembly of a bearing device with a flat bar according to an exemplary embodiment.

Fig. 5 is a schematic view of the internal structure of a bearing device according to an exemplary embodiment.

FIG. 6 is a schematic diagram illustrating a structure of an adjustment block according to an exemplary embodiment.

FIG. 7 is an enlarged view illustrating a set block engaged with a pin according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the related art, a single-bar cutting machine is often provided with a flat bar, a handle or a housing with a cutting knife wheel is sleeved outside the flat bar and moves along the extending direction of the flat bar, and the handle or the housing can be slidably connected with the flat bar through a sliding block or a sliding rail, or can be rotatably connected with the flat bar through a roller or a bearing.

Whichever way the connection is made to the flat bar, the handle or housing may wear the outer wall of the flat bar as it requires a long, multiple reciprocating motion over the flat bar. And along with the live time's of flat bar lapse, the flat bar can produce the deformation, and the flat bar that warp can lead to handle or shell when moving along the outer wall of flat bar, causes cutting position skew, or the cutting operation is not smooth, not only reduces work efficiency, causes the damage of being cut the piece moreover when probably leading to cutting the article.

In order to solve the above technical problem, according to an embodiment of the present disclosure, a bearing device 10 is provided, as shown in fig. 1 to 3, which is applied to a single bar cutter 100. The single bar cutter 100 may be used to cut sheet structures such as glass, ceramic tiles, and the like. The length direction of the flat bar 20 is taken as a first direction, such as the front-back direction indicated in fig. 1, the thickness direction of the flat bar 20 is taken as a second direction, such as the left-right direction indicated in fig. 1, and the height direction of the flat bar 20 is taken as a third direction, such as the up-down direction indicated in fig. 1.

As shown in fig. 4, the bearing device 10 is fitted around the flat bar 20. As shown in fig. 5, the bearing device 10 includes: a housing 11, a first bearing assembly 12 and an adjustment assembly 13.

The housing 11 is provided with a receiving cavity penetrating in the first direction, and the receiving cavity is used for receiving the flat bar 20. The flat bar 20 can run through the casing 11 through holding the chamber, and the length of flat bar 20 is greater than the length of casing 11 far away, and the outer wall at flat bar 20 is established through holding the chamber cover to casing 11, makes casing 11 can follow the direction removal of flat bar 20.

Further, in some embodiments, the housing 11 includes a first housing 111, a second housing 112, and an adjustment housing 113. The second shell 112 and the first shell 111 are symmetrically arranged along a second direction; the adjustment case 113 is interposed between the first case 111 and the second case 112, and the adjustment case 113 may be used to adjust the width of the case 113 and the body 11 in the second direction.

Specifically, the first housing 111 and the second housing 112 are respectively disposed on two sides of the flat bar 20, the housing 11 is formed by butt-jointing the first housing 111 and the second housing 112, and the housing 11 can be sleeved outside the flat bar 20 by forming an accommodating cavity after assembling the first housing 111 and the second housing 112.

When assembled with the flat bar 20, the split housing 11 facilitates installation, removal, replacement, and maintenance, as well as replacement and maintenance of the first bearing assembly 12 and the adjustment assembly 13 inside the housing 11. In addition, through the dismantlement and the equipment of casing 11, same bearing device 10 can use on different flat bars 20, and the suitability is high, and is economical and practical.

The adjustment case 113 is disposed between the first case 111 and the second case 112 in the second direction, the adjustment case 113 includes an upper adjustment case 113 and a lower adjustment case 113, and both ends of the upper adjustment case 113 and both ends of the lower adjustment case 113 are connected to the first case 111 and the second case 112. The shell 11 with the adjusting shell 113, the first shell 111 and the second shell 112 enclose a containing cavity together, and the size of the containing cavity can be increased along the second direction by the adjusting shell 113, so that the flat bar 20 with different thicknesses can be applied.

In addition, the adjusting shell 113 with different thicknesses can be provided, and the adjusting shell 113 with the corresponding thickness can be selected according to the thickness of the flat bar 20. The adjusting shell 113 may be provided in plural, and the thickness of the housing 11 is increased by stacking the plural adjusting shells 113 in the second direction, so as to accommodate flat bars 20 with different thicknesses. The adjustment case 113 allows the housing 11 of the bearing device 10 to have a wider application range, and does not require the size of the flat bar 20 to correspond to the specification of the housing 11 one by one, thereby reducing the cost.

The first bearing assembly 12 is arranged in the accommodating cavity, one side of the first bearing assembly 12 is abutted with the inner wall of the shell 11, and the other side of the first bearing assembly 12 is abutted with the side wall of the flat rod 20; the first bearing assembly 12 abuts between the inner wall of the housing 11 and the side wall of the flat bar 20 so that the housing 11 can roll relative to the flat bar 20 under the action of the first bearing assembly 12.

Further, as shown in fig. 1 and 5, in some embodiments, the first bearing assembly 12 includes: a first pin 121 and a first bearing 122. The first pin 121 is disposed in a vertical direction, that is, in a height direction of the flat bar 20.

The first pin 121 is limited on the housing 11, and a moving baffle or a moving groove may be disposed on an inner wall of the housing 11, so that the first pin 121 may move in the second direction, and the first pin 121 is limited from moving in the first direction.

The first bearing 122 comprises an upper bearing and a lower bearing, and the upper bearing and the lower bearing are sleeved at the upper end and the lower end of the first pin shaft 121; the upper bearing and the lower bearing are symmetrically arranged at the middle point of the first pin shaft 121 in the third direction, and both the upper bearing and the lower bearing are in rolling contact with the side wall of the flat rod 20.

The first bearing assembly 12 further comprises two buffers 123, the two buffers 123 being disposed at an upper end of the upper bearing and a lower end of the lower bearing, respectively. The buffer member 123 may limit the play of the first pin 121 in the vertical direction with respect to the housing 11, and prevent the collision of the upper and lower bearings with the inner wall of the housing 11, extending the service life of the upper and lower bearings.

In some embodiments, two first bearing assemblies 12 are respectively disposed on both sides of the inner wall of the housing 11, and the first bearing assemblies 12 on both sides are symmetrically disposed in the second direction.

Specifically, the number of the first bearing assemblies 12 is four, two first bearing assemblies 12 are disposed on each side of the flat bar 20, the first bearing assemblies 12 on both sides of the flat bar 20 are symmetrically disposed in the second direction, and the two first bearing assemblies 12 on the same side are spaced apart in the first direction. The four first bearing assemblies 12 symmetrically arranged on both sides of the flat bar 20 can enable the housing 11 and the side wall of the flat bar 20 to have four rolling abutting positions, and the four rolling abutting positions are symmetrical, so that when the bearing device 10 moves relative to the flat bar 20, the housing 11 is stressed in a balanced manner, and the moving process is more stable.

And the adjusting assembly 13 is arranged in the accommodating cavity and is also limited on the inner wall of the shell 11, the adjusting assembly 13 comprises an adjusting block 131, the adjusting block 131 can move relative to the shell 11, and the adjusting block 131 is abutted with one side of the first bearing assembly 12 far away from the flat rod 20. Wherein the first bearing assembly 12 is movable between a first position and a second position in a second direction, the first bearing assembly 12 being held in abutment with the side wall of the blade 20 in the second direction by movement of the adjustment block 131, the first direction being perpendicular to the second direction.

Specifically, in the present embodiment, the first position may be a position where the first bearing assembly 12 is away from the inner wall of the housing 11, and the second position may be a position where the first bearing assembly 12 is close to the inner wall of the housing 11. The first position and the second position are merely exemplary to illustrate the relative positional relationship of the first bearing assembly 12 in the second direction, and in other embodiments, the first position may correspond to a position where the first bearing assembly 12 is close to the inner wall of the housing 11, and the second position may correspond to a position where the first bearing assembly 12 is away from the inner wall of the housing 11.

When the first bearing assembly 12 abuts the recess in the side wall of the blade 20, the first bearing assembly 12 moves in the second direction to the first position, thereby causing the first bearing assembly 12 to abut the side wall of the blade 20; when the first shaft assembly abuts the ledge of the side wall of the spade post 20, the first bearing assembly 12 is moved in the second direction to the second position, thereby causing the first bearing assembly 12 to abut the side wall of the spade post 20.

When the first bearing assembly 12 slides relative to the side wall of the same flat bar 20, the first bearing assembly 12 can be moved between the first position and the second position in the second direction, so that the position of the first bearing assembly 12 can be timely adjusted when the first bearing assembly 12 meets the bulge or the recess of the side wall of the flat bar 20, thereby avoiding the separation of the first bearing assembly 12 from the side wall of the flat bar 20 or the collision and abrasion of the first bearing assembly 12 to the side wall of the flat bar 20, and further prolonging the service life of the bearing device 10 and the flat bar 20.

In addition, when the first bearing assembly 12 moves in the second direction, the adjustment block 131 also moves accordingly, such as in the first direction or in a third direction. Since the first bearing assembly 12 abuts the sidewall of the blade 20, the adjustment block 131 abuts the first bearing assembly 12, and the adjustment block 131 moves correspondingly to the movement of the first bearing assembly 12, so that the first bearing assembly 12 always maintains abutment with the sidewall of the blade 20 in the second direction.

As shown in fig. 6, in some embodiments, adjustment block 131 is provided with an adjustment inclined surface 1311 and a blocking plate 1312, where adjustment inclined surface 1311 includes a high end 13111 and a low end 13112, and blocking plate 1312 is disposed at low end 13112 for blocking first pin shaft 121 from slipping off. Adjustment ramp 1311 of adjustment block 131 abuts the side of first pin 121 of first bearing assembly 12 that is distal from blade 20.

Adjustment ramp 1311 is inclined in the same direction as the direction of movement of adjustment block 131. adjustment block 131 can be moved in the first direction, with adjustment ramp 1311 of adjustment block 131 inclined in the first direction, and adjustment block 131 can also be moved in the third direction, with adjustment ramp 1311 of adjustment block 131 inclined in the third direction.

Further, there is one adjustment block 131 per pin, i.e., in this embodiment, there are four first bearing assemblies 12, including four first pins 121, so the number of adjustment blocks 131 is four.

Adjustment assembly 13 further includes a resilient member 132, resilient member 132 being coupled to a lower end 13112 of adjustment ramp 1311 of adjustment block 131. One elastic member 132 may be connected to each adjustment block, or one elastic member 132 may be shared by two adjustment blocks. Wherein the elastic member 132 may be a compression spring.

In the present embodiment, the adjustment assembly 13 includes: two adjusting blocks 131 and an elastic member 132. The two adjustment blocks 131 abut against the first pins 121 of the two first bearing assemblies 12 on the inner wall side of the housing 11, respectively. Both ends of one elastic member 132 are connected to the lower ends 13112 of the adjustment slopes 1311 of the two adjustment blocks 131, respectively.

Wherein, when the first bearing assembly 12 is in the first position, as shown in fig. 7, the tension of the elastic member 132 causes the two adjusting blocks 131 to move closer together and the high end 13111 of the adjusting inclined surface 1311 to abut against the first pin 121; when the first bearing assembly 12 is in the second position, the first pin 121 presses the adjustment inclined surface 1311, so that the two adjustment blocks 131 are away from each other, and the lower end 13112 of the adjustment inclined surface 1311 abuts against the first pin 121.

When the first bearing assembly 12 abuts against the recess of the sidewall of the flat bar 20, the first pin 121 of the first bearing assembly 12 moves toward the first position, so that the first pin 121 has a tendency to move away from the adjustment inclined surface 1311, the acting force of the first pin 121 on the adjustment block 131 is reduced, at this time, the adjustment block 131 is pulled to move toward the elastic member 132 under the tensioning force of the elastic member 132, and the elastic member 132 is connected to the lower end 13112 of the adjustment inclined surface 1311, so that the first pin 121 and the adjustment inclined surface 1311 slidably abut against each other in the direction from the lower end 13112 to the higher end 13111.

When the first bearing assembly 12 abuts against the protruding portion of the side wall of the flat bar 20, the first pin 121 of the first bearing assembly 12 moves to the second position, so that the first pin 121 presses the movement tendency of the adjustment inclined surface 1311, the acting force of the first pin 121 on the adjustment block 131 becomes larger, and the adjustment block 131 moves in the direction away from the elastic member 132, so that the first pin 121 and the adjustment inclined surface 1311 slidably abut against each other in the directions of the high end 13111 and the low end 13112.

Further, in some embodiments, the bearing assembly 10 further includes a second bearing assembly 14, the first bearing assembly 12 being disposed inside the housing 11 and abutting the upper end of the flat bar 20. Further, in some embodiments, the bearing assembly 10 further includes a third bearing assembly 15, the third bearing assembly 15 being disposed inside the housing 11 and abutting the lower end of the flat bar 20.

Wherein, second bearing subassembly 14 and third bearing subassembly 15 all set up and hold the intracavity, and second bearing subassembly 14 includes second round pin axle and second bearing, and the both ends and the casing 11 fixed connection of second round pin axle, the second bearing cover is established in the outside of second round pin axle, and the up end butt of second bearing and flat bar 20. In the present embodiment, the second bearing assembly 14 has one, and the second bearing assembly 14 has two second bearings.

The third bearing assembly 15 includes a third pin shaft and a third bearing, both ends of the third pin shaft are fixedly connected with the housing 11, the third bearing is sleeved outside the third pin shaft, and the third bearing is abutted against the lower end face of the flat bar 20. In the present embodiment, the third bearing assembly 15 includes two, which are spaced apart in the first direction.

According to the structure, the first bearing assembly 12 abuts against the side walls of the left side and the right side of the flat rod 20, the second bearing assembly 14 abuts against the upper end face of the flat rod 20, the third bearing assembly 15 abuts against the lower end face of the flat rod 20, so that the shell 11 of the bearing device 10 can be in rolling abutment with the flat rod 20 in four directions, the sliding connection between the bearing device 10 and the flat rod 20 is avoided, the friction force is reduced, the single-handle cutting machine is enabled to be in the cutting process, the handle moves more smoothly, labor is saved, the friction force between the bearing device 10 and the flat rod 20 is small, the abrasion between the bearing device 10 and the flat rod 20 is avoided, and the service life is prolonged.

Based on the same concept, the disclosed embodiment also provides a single bar cutter 100, including: a flat bar 20; the bearing device 10 is sleeved outside the flat rod 20; the handle 30, the handle 30 rolls along the flat bar 20 through the first bearing assembly 12, the handle 30 is sleeved outside the bearing device 10, and the handle 30 is pivoted with the housing 11, so that the handle 30 rotates up and down relative to the flat bar 20.

With regard to the single bar cutter in the above-described embodiment, the specific manner in which the respective modules perform operations has been described in detail in the embodiment related to the bearing device, and will not be described in detail herein.

It is understood that "plurality" in this disclosure means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.

Claims (10)

1. A bearing device, comprising:

the device comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with an accommodating cavity which is communicated along a first direction and used for accommodating a flat rod;

the first bearing assembly is arranged in the accommodating cavity and is abutted against the side wall of the flat rod;

the adjusting assembly comprises an adjusting block, the adjusting block is abutted against one side of the first bearing assembly, which is far away from the flat rod,

wherein the first bearing assembly moves between a first position and a second position in a second direction, the first bearing assembly is kept in abutment with the side wall of the flat bar in the second direction by the movement of the adjusting block, and the first direction is perpendicular to the second direction.

2. The bearing device of claim 1,

the adjusting block is provided with an adjusting inclined plane and a baffle, the adjusting inclined plane comprises a high end and a low end, the baffle is arranged at the low end, and the inclination direction of the adjusting inclined plane is consistent with the moving direction of the adjusting block;

the high end of the adjustment ramp abuts the first bearing assembly when the first bearing assembly is in the first position and the low end of the adjustment ramp abuts the first bearing assembly when the first bearing assembly is in the second position.

3. The bearing device of claim 2,

the adjusting assembly further comprises an elastic piece, and the elastic piece is connected to the lower end of the adjusting inclined plane and elastically deforms along the first direction;

wherein the adjustment ramp of the adjustment block maintains the first bearing assembly in abutment with the side wall of the blade bar in the second direction by tension of the resilient member in the first direction.

4. The bearing apparatus of claim 3 wherein the first bearing assembly comprises:

the first pin shaft is arranged along the vertical direction;

the first bearing comprises an upper bearing and a lower bearing, and the upper bearing and the lower bearing are sleeved at the upper end and the lower end of the first pin shaft;

and the two buffer parts are respectively arranged at the upper end of the upper bearing and the lower end of the lower bearing.

5. The bearing device of claim 4,

two first bearing assemblies are arranged on two sides of the inner wall of the shell respectively, and the first bearing assemblies on the two sides are symmetrically arranged along the second direction.

6. The bearing assembly of claim 5 wherein the adjustment assembly comprises:

the two adjusting blocks are respectively abutted with the first pin shafts of the two first bearing assemblies positioned on one side of the inner wall of the shell;

two ends of the elastic piece are respectively connected with the lower ends of the adjusting inclined planes of the two adjusting blocks;

when the first bearing assembly is in the first position, the tensioning force of the elastic piece enables the two adjusting blocks to be close to each other, and the high end of the adjusting inclined plane is abutted to the first pin shaft; when the first bearing assembly is at the second position, the first pin shaft extrudes the adjusting inclined surface, so that the two adjusting blocks are far away from each other, and the lower end of the adjusting inclined surface is abutted against the first pin shaft.

7. The bearing assembly of claim 1, wherein the housing comprises:

a first shell body and a second shell body which are arranged in the first shell body,

the second shell and the first shell are symmetrically arranged along the second direction;

and the adjusting shell is clamped between the first shell and the second shell and is used for adjusting the width of the shell in the second direction.

8. The bearing device of claim 1,

the bearing device further comprises a second bearing assembly, wherein the first bearing assembly is arranged in the shell and is abutted against the upper end of the flat rod.

9. The bearing device of claim 1,

the bearing device further comprises a third bearing assembly, wherein the third bearing assembly is arranged in the shell and is abutted against the lower end of the flat rod.

10. A single bar cutting machine, comprising:

a flat bar;

the bearing device according to any one of claims 1 to 9, fitted over the flat bar;

the handle rolls along the flat rod through the first bearing assembly and is pivoted with the shell, so that the handle rotates up and down relative to the flat rod.

Images