KR20200141354A - Fork Assembly for Mini Loader - Google Patents

Abstract

The present invention relates to a fork assembly for a mini-loader, which comprises: a fork unit including a main body unit having a driving dynamometer, a first slider driven in a longitudinal direction on the main body unit, and a second slider driven in connection with movement of the first slider on the first slider; and a conveyor unit including first rear and front conveyors arranged on one side surface of the fork unit and separately arranged in the longitudinal direction of the fork unit, and second rear and front conveyors arranged on the other side surface of the fork unit and separately arranged in the longitudinal direction of the fork unit. The highest height of an upper surface of the second slider of the fork unit is formed to be lower than that of an upper surface of the conveyor unit. Accordingly, a cargo can be smoothly moved.

Description

Fork Assembly for Mini Loader {Fork Assembly for Mini Loader}

The present invention relates to a fork assembly used in a miniloader apparatus, and more particularly, to a fork assembly for loading or leaving a rack in a miniloader operating at high speed.

In an automated distribution warehouse where cargo is stored in a large-scale warehouse, the mini loader accesses the rack where cargo is stored and loads the cargo on the rack or collects the loaded cargo by pulling it out of the rack.

A telescopic multi-stage telescopic fork assembly was used to mount the cargo at a specific location on the rack by the mini loader reaching the desired position in the rack.

However, in the case of a conventional fork assembly for a mini loader, there is a problem in that the fork cannot stably support the cargo or even drop the cargo in the process of mounting the cargo on the rack or retracting the cargo from the rack.

In addition, it is difficult to implement the optimal transport logic for transporting the cargo to a specific location of the rack because the cargo cannot be moved anymore in the space where the cargo is mounted in the fork assembly.

In order to solve the above problems, the present invention enables the fork assembly for a mini loader to move the position of the cargo in the fork assembly to provide an optimal cargo loading logic, and when placing the cargo on or taking out the cargo from the rack An object of the present invention is to provide a fork assembly for a mini loader that can stably move a cargo.

In one embodiment of the present invention, the fork assembly for a mini loader includes a main body having a driving dynamometer, a first slider driven longitudinally on the main body, and driven in connection with the movement of the first slider on the first slider. A fork portion having a second slider to be configured; And a first rear conveyor and a first front conveyor disposed on one side of the fork portion and separated from each other along the length direction of the fork portion, and disposed on the other side of the fork portion, and separated from each other along the length direction of the fork portion. A conveyor unit having a second rear conveyor and a second front conveyor disposed; wherein a maximum height of an upper surface of the second slider of the fork unit is set lower than a maximum height of an upper surface of the conveyor unit.

Here, the conveyor unit comprises a rear conveyor driving actuator for driving the second rear conveyor disposed opposite the first rear conveyor with respect to the first rear conveyor and the fork unit, and the first front conveyor and the fork unit And a front conveyor drive actuator for driving a second front conveyor disposed opposite the first front conveyor.

A rear conveyor drive shaft extending from the rear conveyor drive actuator and a front conveyor drive shaft extending from the front conveyor drive actuator are additionally included, wherein the rear conveyor drive shaft powers the first rear conveyor and the second rear conveyor. The front conveyor drive shaft is connected to transmit power to the first front conveyor and the second front conveyor, and the rear conveyor drive shaft and the front conveyor drive shaft are spaced apart from each other at the lower side of the fork part. Has been extended.

Each of the first rear conveyor, the second rear conveyor, the first front conveyor, and the second front conveyor includes a conveyor belt, and each includes a plurality of roller groups for providing the conveyor belt, the roller The group includes a drive roller for driving the belt by receiving power from any one of the rear conveyor drive shaft and the front conveyor drive shaft, and a first end roller and a second end roller respectively disposed at a longitudinal end of the conveyor belt. An end roller, and an intermediate roller disposed between the first end roller and the second end roller, wherein the first end roller and the intermediate roller drive the first end roller and the intermediate roller so that the section of the conveyor belt is guided horizontally. The first end roller and the intermediate roller are disposed, and the intermediate roller and the second end roller are disposed so that a section of the conveyor belt driven and guided by the intermediate roller and the second end roller is tapered.

The driving roller is disposed at the lowermost side of the roller group, a first guide roller is disposed between the driving roller and the first end roller, and a second guide roller is disposed between the driving roller and the second end roller. .

The height of the conveyor belt in the section in which the conveyor belt is horizontal between the first end roller and the intermediate roller corresponds to the highest height of the upper surface of the conveyor part.

The horizontal distance between the intermediate roller and the first end roller is set larger than the horizontal distance between the intermediate roller and the second end roller.

The first rear conveyor, the second rear conveyor, the first front conveyor, and the second front conveyor each have a conveyor leg portion extending downward to accommodate the driving roller.

The effect of the fork assembly for a mini loader according to the present invention will be described as follows.

First, since a separate conveyor capable of moving cargo in the longitudinal direction is provided in the fork assembly, it is possible to move the position of the cargo in the fork assembly, and through this, it is possible to provide an optimal cargo storage logic.

Second, when the cargo is moved to the rack by the fork unit or when the cargo is collected from the rack and received by the fork assembly, smooth movement of the cargo is possible because the conveyor unit is disposed on the side of the fork unit.

Third, it is possible to arrange a driving roller in a leg extending downward from the conveyor, and to arrange a guide roller, an end roller, and an intermediate roller, thereby enabling efficient use of the inner space of the conveyor.

Fourth, by arranging a plurality of conveyors on the side of the fork portion, it is possible to move the cargo to the fork portion in any direction when the fork portion is extended forward or backward.

Fifth, it is possible to solve the problem that a large load is applied to the fork part because the fork part is used to transport the cargo by the force of the fork part only, and the conveyor is in charge of transporting the cargo over a certain distance.

1 is a perspective view of a fork assembly for a mini loader according to an embodiment of the present invention.
2 is a perspective view of the fork assembly of FIG. 2 in which a frame and a guide part are omitted.
3 is an exploded perspective view of the fork assembly of FIG. 2.
4 is a perspective cross-sectional view taken along line BB of FIG. 3.
5 is a perspective view showing only the configuration of the main body in the fork assembly of FIG.
6 is an explanatory view illustrating the operating principle of the first slider and the second slider of the fork assembly for a mini loader according to a temporary example of the present invention.
7 is a perspective view showing only the second rear conveyor and the second front conveyor separated from FIG. 3.
8 is a front view showing the internal power transmission configuration of the second rear conveyor of FIG. 7.
9 is a cross-sectional view taken along line AA of FIG. 2.

A specific embodiment for carrying out the present invention will be described with reference to the accompanying drawings. The thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be understood based on the contents described throughout this specification.

The terms "first" and "second" used in the present invention will be used to distinguish corresponding components from each other, but do not indicate the importance or order of operation between the components. In addition, the terms "forward" and "rear" used in the present invention will be used to distinguish specific contrasting directions from each other, for example, in the drawing, the +X direction is referred to as the forward direction, and the -X direction is the rear It is referred to as a direction.

1 is a perspective view of a fork assembly for a mini loader according to an embodiment of the present invention, and a frame and a guide portion are omitted from the fork assembly of FIG. 2. 1 and 2, the fork assembly 100 for a mini loader according to an embodiment of the present invention is forward (+X direction) or rearward (-X direction) in order to store or release cargo in a rack. A fork portion 200 that can be extended in a telescopic manner, a conveyor portion 300 disposed on both sides of the fork portion, and a frame portion supporting the shape of the fork portion 200 and the conveyor portion 300 400, and a guide unit 500 for guiding the cargo so that it does not fall to the outside when the cargo moves in the conveyor unit.

Referring to FIG. 2, in an embodiment of the present invention, the fork portion 200 of the fork assembly 100 for a mini loader is a body portion 206 having a driving dynamometer for driving the fork portion, and a longitudinal direction on the body portion. And a first slider 204 driven by the first slider 204 and a second slider 202 driven in association with the movement of the first slider on the first slider. The conveyor part 300 is disposed adjacent to one side of the fork part 200, but separated from each other along the length direction of the fork part, and the first rear conveyor 310a and the first front conveyor 310d, respectively, In addition, a second rear conveyor 310b and a second front conveyor 310c are disposed adjacent to the other side of the fork portion 200 and are disposed to be separated from each other along the length direction of the fork portion.

3 is an exploded perspective view of the fork assembly of FIG. 2. Referring to FIGS. 2 and 3, the conveyor unit 300 is disposed opposite the first rear conveyor 310a with respect to the first rear conveyor 310a and the fork unit 200. A rear conveyor driving actuator 302r for driving the rear conveyor 310b, and a second front disposed opposite the first front conveyor 310d with respect to the first front conveyor 310d and the fork part 200 And a front conveyor drive actuator 302f that drives the conveyor 310c.

The conveyor unit 300 includes a rear conveyor driving shaft 304r extending from the rear conveyor driving actuator 302r and a front conveyor driving shaft 304f extending from the front conveyor driving actuator 302f.

Here, the rear conveyor drive shaft 304r is connected to transmit power to the first rear conveyor 310a and the second rear conveyor 310b. That is, the first rear conveyor 310a and the second rear conveyor 310b are connected to the rear conveyor drive shaft 304r in a coaxial relationship, and receive power from the rear conveyor drive actuator 302r. Accordingly, the first rear conveyor 310a and the second rear conveyor 310b operate in synchronization.

Similarly, the front conveyor drive shaft (304f) is connected to transmit power to the first front conveyor (310d) and the second front conveyor (310c), the rear conveyor drive shaft (304r) and the front conveyor drive shaft ( 304f) are spaced apart from each other and extend from the lower side of the fork part 200.

The front fixing strip 250f extends vertically to the extension direction of the body portion 206 on the lower side of the body portion 206 of the fork portion 200. The rear fixing strip 250r is installed inclined from the lower side of the body portion 206 to the rear side. The first rear conveyor 310a and the second rear conveyor 310b are fixed to the rear fixing strip 250r at predetermined positions through respective fixing brackets 320a and 320b. Similarly, the first front conveyor 310d and the second front conveyor 310c are also fixed to a predetermined position of the front fixing strip 250f through respective fixing brackets 320d and 320c.

Each conveyor 310a, 310b, 310d, 310c has inner panels 318a, 318b, 318d, 318c in a direction toward the fork part 200, and outer panels 312a, 312b, in a direction away from the fork part, 312d, 312c). In addition, each of the conveyors 310a, 310b, 310d, 310c includes conveyor leg portions 314a, 314d extending vertically downward from the extending direction of the inner panel and the outer panel. Although reference numerals are not indicated in the drawings, the second rear conveyor and the second front conveyor are similarly provided with conveyor legs. Conveyor shaft holders 316a and 316d for accommodating the end of the conveyor drive shaft are provided on the side of the conveyor leg portion.

Figure 4 is a perspective cross-sectional view taken along the line BB of Figure 3, Figure 5 is a perspective view showing only the configuration of the main body part in the fork assembly of Figure 3 separated, Figure 6 is a fork for a mini loader according to a temporary example of the present invention It is an explanatory drawing explaining the operation principle of the 1st slider and the 2nd slider of an assembly.

4 to 6, the first slider 204 includes side guide grooves 204b on both side surfaces, respectively. A center guide groove 204g opened downwardly is formed under the first slider 204.

In addition, the lower surface of the first slider 204 is aligned with the center guide groove 204g and accommodates the upper ends of the first body panel 208a and the second body panel 208b of the body portion 206. A rack gear (204a) is provided that is aligned in the space and extends in the longitudinal direction of the first slider. The rack gear 204a forms a straight line by successively forming a plurality of gear teeth.

On the other hand, the upper surface of the first slider 204 is provided with upper grooves 204c and 204e having a predetermined depth in both lateral directions, and a predetermined depth in both lateral directions on the lower surface of the first slider 204 Lower grooves 204d and 204f having a are formed. In the upper grooves 204c and 204e and the lower grooves 204d and 204f, a belt or chain for linking the movement by transmitting the movement of the first slider to the second slider is inserted therein. The specific motion linkage configuration will be described later.

The second slider 202, which is moved in a telescopic manner in connection with the movement of the first slider 204, has side seating portions 203 extending in the longitudinal direction of the second slider at both side ends of the upper surface thereof. . A portion of the bottom surface of the cargo to be carried by the fork portion comes into contact on the side seating portion 203.

Side blocks 202a protruding downward and extending in the longitudinal direction of the second slider are provided on both sides of the second slider 202. Each side block 203a is formed with a guide protrusion 202b protruding inward, and the guide protrusion 202b is movably connected in the side guide groove 204b of the first slider 204.

On the other hand, the first main body panel 208a and the second main body panel 208b of the main body 206 facing each other vertically slide the first slider 204 to move in the longitudinal direction of the main body 206 Each of the support rollers 260a supported in a manner is provided. The support roller 260a slidably supports the lower surface of the first slider 204.

Referring to FIG. 4, between the first body panel 108a and the second body panel 108b of the body part 206, a first gear 231 receiving power from a slider driving actuator 230 and the first A second gear 232 receiving power from the gear is disposed.

The first gear 231 and the second gear 232 may be directly connected to each other, or may be indirectly connected to each other through a separate gear for power transmission in the middle.

5 and 6, a first pinion gear 234 and a second pinion gear 236 disposed adjacent to and connected to the second gear 232 and the first body panel 208a and the It is disposed between the second body panels 208b. 6, the highest height of the teeth of the first pinion gear 234 and the second pinion gear 236 is disposed higher than the highest height of the teeth of the second gear 232, the first The pinion gear and the second pinion gear are positioned at the same maximum height of their gear teeth to mesh with the rack gear 204a of the first slider 204.

The first pinion gear 234 and the second pinion gear 236 rotate in a direction opposite to the rotation direction of the second gear 232 by the clockwise rotation or counterclockwise rotation of the second gear 232 Is done. The first pinion gear 234 and the second pinion gear 236 rotate at the same direction and angular speed.

As shown in Fig. 6, the fork portion 200 has one end wound around the end surface of the front side of the first slider 204 and fixed to the front fixing portion 204f2 of the lower surface of the front side of the first slider. , The other end is provided with a first power transmission element 220a fixed to the second slider rear fixing portion 202f1 on the upper surface of the rear side of the second slider by winding the end surface of the second slider 202 . On the other hand, the fork portion 200 is fixed to the first slider rear fixing portion 204f1 at the lower surface of the rear side of the first slider by winding the end surface of the first slider 204 at one end, and the other end And a second power transmission element 220b fixed to the second slider front fixing portion 204f2 on the upper surface of the front side of the second slider by winding an end surface of the second slider 202 on the front side.

The first power transmission element 220a may be arranged to pass through the upper groove 204c and the lower groove 204d shown in FIG. 4, and the second power transmission element 220b is the upper groove 204e. ) And the lower groove 204f. The pair of grooves through which the first power transmission element and the second power transmission element pass may be opposite to each other. Further, the first power transmission element 220a and the second power transmission element 220b may be a belt or a chain. In addition, a portion in which the first power transmission element and the second power transmission element extend around the ends of the first slider and the second slider to reduce the frictional force, or a roller (not shown) or equivalent thereto. The performing component can be mounted.

Referring to FIG. 6, the relationship between the movement of the first slider 204 and the second slider 202 will be described. When the second gear 232 rotates in the clockwise direction, the first pinion gear 234 and the second pinion gear 236 rotate in the same counterclockwise direction, and the rack gear 204a meshed with this pinion gear is The first slider 204 is moved in the -X direction (rear side). When the first slider 204 moves in the -X direction, the rear end of the first slider 204 moves together with the second power transmission element 220b connected, and the second power transmission element 220b The second slider 202 to which the end is fixed is moved in the -X direction (rear side), and eventually the fork part 200 is telescopically extended toward the rear side.

Optionally, when the second gear 232 rotates in the semi-mechanical direction, the first pinion gear 234 and the second pinion gear 236 rotate in the same clockwise direction, and the rack gear meshed with the pinion gear ( 204a) moves the first slider 204 in the +X direction (front side). When the first slider 204 moves in the +X direction, the front end of the first slider 204 moves together while connected to the first power transmission element 220a, and at this time, the first power transmission element 220a is The second slider 202 to which the end is fixed is moved in the +X direction (front side), and eventually the fork portion 200 is telescopically extended to the front side.

Accordingly, depending on the rotation direction of the second gear, the fork portion may be extended to the rear side or extended to the front side, so that the cargo can be transported in both directions.

FIG. 7 is a perspective view showing only the second rear conveyor and the second front conveyor in FIG. 3 separately, and FIG. 8 is a front view showing the internal power transmission configuration of the second rear conveyor of FIG. 7.

3 and 7, the second rear conveyor 310b and the second front conveyor 310c are disposed mirror-symmetrically to each other. Similarly, the first rear conveyor 310a and the first front conveyor 310d are also arranged mirror-symmetrically to each other.

Although the second rear conveyor 310b and the second front conveyor 310c are spaced apart from each other, the height of a conveyor belt carrying cargo is the same. Likewise, although the first rear conveyor 310a and the first front conveyor 310d are spaced apart from each other, the heights of the conveyor belts for transporting cargo are the same. Accordingly, smooth movement is possible when the cargo moves from the rear conveyor to the front conveyor or when the cargo moves from the front conveyor to the rear conveyor.

Referring to FIG. 3 again, the first rear conveyor 310a, the second rear conveyor 310b, the first front conveyor 310d, and the second front conveyor 310c are respectively a conveyor belt 311a, 311b, 311d, 311c), and each includes a plurality of roller groups for driving the conveyor belt.

This time, it will be described with reference to FIGS. 3 and 8. 8 is a view of the second rear conveyor, and the configuration of the remaining conveyors is also the same. The roller group includes a driving roller 322b for driving the belt 311b by receiving power from the rear conveyor driving shaft 304r, and a first end roller 328b disposed at a longitudinal end of the conveyor belt 311b, respectively. ) And a second end roller 327b, and an intermediate roller 329b disposed between the first end roller 328b and the second end roller 327b.

The first end roller and the intermediate roller are disposed so that the section of the conveyor belt 311b driven and guided by the first end roller 328b and the intermediate roller 329b is horizontal. The intermediate roller (329b) and the second end roller (327b) so that the section of the conveyor belt driven and guided by the intermediate roller (329b) and the second end roller (327b) is tapered by a height difference (h5). Is placed. The direction of the second end roller 327b disposed low in height due to the height difference h5 becomes a direction in which the slider of the fork portion 200 is extended.

The driving roller 322b is disposed at the bottom of the roller group and is connected to and driven by a conveyor driving actuator, but a first guide roller 326b is disposed between the driving roller 322b and the first end roller 328b. In addition, a second guide roller 324b is disposed between the driving roller 322b and the second end roller 327b.

The height of the conveyor belt in the section in which the conveyor belt is horizontal between the first end roller 328b and the intermediate roller 329b corresponds to the highest height of the upper surface of the conveyor part.

The horizontal distance between the intermediate roller 329b and the first end roller 328b is set larger than the horizontal distance between the intermediate roller 329b and the second end roller 327b.

Meanwhile, referring to FIGS. 3 and 8 together, the first rear conveyor 310a and the first front conveyor 310d have conveyor leg portions 314a and 314d extending downward to accommodate respective driving rollers. Each has. Although not indicated by reference numerals in the drawings, the second rear conveyor 310b and the second front conveyor 310c also include conveyor legs extending downward to accommodate respective driving rollers.

The conveyor belt 311b may be a timing belt having teeth formed on an inner raceway surface, but is not limited thereto, and may be a V-shaped belt or a flat belt.

9 is a cross-sectional view taken along line A-A of FIG. 2. 9, the highest height of the upper surface of the second slider 202 of the fork part 200, that is, the height of the side seating part, is the highest height of the upper surface of the conveyor part, that is, the intermediate roller 329b or the first It is set lower than the height of the conveyor belt supported and driven by the end rollers 328b. Accordingly, the transport of the cargo by being placed on the conveyor belt of the conveyor unit 300 and the telescopic expansion and contraction of the fork unit 200 do not interfere with each other.

When the conveyor unit 300 reaches the position where the cargo is delivered to the fork unit 200, the cargo is tapered between the intermediate roller 329b and the second end roller 327b as shown in FIG. It is smoothly seated on the upper surface of the second slider 204 of the fork portion 200 through the inclined section of the belt, so that the fork portion can enter the inside of the rack according to the movement of the fork portion. Even when cargo is collected and entered by the fork unit in the rack, the cargo is on the conveyor through the tapered belt slope section between the intermediate roller 329b and the second end roller 327b in the process of contracting the fork unit 200. It will be placed gently.

To this end, the conveyor belt supported and guided by the intermediate rollers of the conveyor is a side raised on the surface of the second slider 202 by having the intermediate rollers 329b and 329a itself arranged high in consideration of its thickness h2. It is driven at a position h4 higher than the thickness h3 of the seating portion 203.

This is a detailed description of specific embodiments in the invention, but this invention is not limited thereto, and this invention can be implemented in various modifications by those of ordinary skill in the art to which the present invention belongs, and such modifications are the scope of the invention. Included in

With regard to interpretation, it can be understood that this invention may be embodied in a modified form without departing from the essential characteristics of the invention.

The disclosed embodiments should be considered in terms of description rather than in terms of limitation. The scope of the invention is shown in the claims rather than the above description, and differences within the scope equivalent thereto should be interpreted as being included in the invention.

In the case of terms whose meaning is not particularly defined in the present invention, they should be broadly interpreted as a general meaning, and should be interpreted as including other terms in an equal range.

100: fork assembly
200: fork portion 202: first slider
202a: side block 202b: guide projection
203: side seating portion 204: second slider
204a: rack gear 204b: side guide groove
204c, 204d, 204e, 204f: groove
204g: Center guide groove
206: main body
208a: first body panel 208b: second body panel
220a: first power transmission element 220b: second power transmission element
230: slider drive actuator
231: first gear 232: second gear
234: first pinion gear 235: pinion cover panel
236: second pinion gear
250f: front fixing strip 250r: rear fixing strip
300: conveyor unit 302f: front conveyor drive actuator
302r: rear conveyor drive actuator
304f: front conveyor drive shaft
304r: rear conveyor drive shaft 310a: first rear conveyor
310b: second rear conveyor 310c: first front conveyor
310d: second front conveyor
311a: first rear conveyor belt 311b: second rear conveyor belt
311c: first front conveyor belt 311d: second front conveyor belt
322b: drive roller 324b: second guide roller
326b: first guide roller 327b: second end holer
328b: first end roller 329b: intermediate roller
400: frame part 500: guide part

Claims (8)

A fork portion having a main body having a driving dynamometer, a first slider driven on the main body in a longitudinal direction, and a second slider driven on the first slider in connection with the movement of the first slider; And
A first rear conveyor and a first front conveyor disposed on one side of the fork portion and separated from each other along the length direction of the fork portion, and disposed on the other side of the fork portion, and arranged separately from each other along the length direction of the fork portion Containing; a conveyor unit having a second rear conveyor and a second front conveyor to be
A fork assembly for a mini loader, characterized in that the highest height of the upper surface of the second slider of the fork part is lower than the highest height of the upper surface of the conveyor part. The method of claim 1,
The conveyor unit includes a rear conveyor drive actuator for driving the second rear conveyor disposed opposite the first rear conveyor with respect to the first rear conveyor and the fork unit, and the first front conveyor and the fork unit A fork assembly for a mini loader, comprising a front conveyor drive actuator for driving a second front conveyor disposed opposite the first front conveyor. The method of claim 2,
Further comprising a rear conveyor drive shaft extending from the rear conveyor drive actuator and a front conveyor drive shaft extending from the front conveyor drive actuator,
The rear conveyor drive shaft is connected to transmit power to the first rear conveyor and the second rear conveyor, and the front conveyor drive shaft is connected to transmit power to the first front conveyor and the second front conveyor,
The rear conveyor drive shaft and the front conveyor drive shaft are spaced apart from each other and extend from the lower side of the fork unit fork assembly for mini loader. The method of claim 3,
The first rear conveyor, the second rear conveyor, the first front conveyor, and the second front conveyor each have a conveyor belt,
Each includes a plurality of roller groups for providing the conveyor belt,
The roller group includes a drive roller for driving the belt by receiving power from any one of the rear conveyor drive shaft and the front conveyor drive shaft, and a first end roller disposed at a longitudinal end of the conveyor belt, respectively. A second end roller, and an intermediate roller disposed between the first end roller and the second end roller,
The first end roller and the intermediate roller are arranged so that the section of the conveyor belt driven and guided by the first end roller and the intermediate roller is horizontal,
The fork assembly for a mini loader, characterized in that the intermediate roller and the second end roller are arranged such that a section of the conveyor belt driven and guided by the intermediate roller and the second end roller is tapered. The method of claim 4,
The driving roller is disposed at the bottom of the roller group,
A fork assembly for a mini loader, characterized in that a first guide roller is disposed between the driving roller and the first end roller, and a second guide roller is disposed between the driving roller and the second end roller. The method of claim 5,
A fork assembly for a mini loader, characterized in that the height of the conveyor belt in a section in which the conveyor belt is horizontal between the first end roller and the intermediate roller corresponds to a maximum height of an upper surface of the conveyor unit. The method of claim 6,
A fork assembly for a mini loader, wherein a horizontal distance between the intermediate roller and the first end roller is greater than a horizontal distance between the intermediate roller and the second end roller. The method of claim 7,
The first rear conveyor, the second rear conveyor, the first front conveyor, and the second front conveyor each have a conveyor leg portion extending downward to accommodate the driving roller.

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