KR102786200B1 - Pallet assembly with a sag prevention structure - Google Patents

Abstract

The present invention relates to a pallet assembly having a sagging prevention structure that can prevent sagging exceeding a permissible amount even when a concentrated load is applied to the center of a pallet used in a rotary automatic loading warehouse system.

Description

PALLET ASSEMBLY WITH A SAG PREVENTION STRUCTURE

The present invention relates to a pallet assembly having a sagging prevention structure capable of preventing sagging of a pallet used in a rotary automatic loading warehouse system.

In general, the rotary type automatic loading warehouse system is designed to provide maximum storage space using minimum area, and is advantageous for loading items such as small, multi-variety parts.

Specifically, a rotary type automatic loading warehouse system is installed so that multiple pallets (shelves) can rotate in a circle up and down by receiving power within a main body housing, and multiple baskets containing items to be stored can be placed on the pallets. An automatic loading warehouse system with this structure allows workers to quickly put in and take out desired parts.

However, the pallet applied to the above-mentioned rotary type automatic loading warehouse system is structured so that both ends are supported to enable continuous up and down rotation within the main housing. Accordingly, if a concentrated load is applied to the center of the pallet formed to a predetermined length, there is a risk that deflection exceeding the allowable amount may occur.

Republic of Korea Patent Publication No. 10-2013-0066807 (Published on: 2013.06.21.)

The present invention has been made to solve the above-described problems, and the purpose of the present invention is to provide a pallet assembly equipped with a sagging prevention structure that can prevent sagging exceeding an allowable value even when a concentrated load is applied to the center of a pallet used in a rotary automatic loading warehouse system.

According to the present invention, a pallet assembly equipped with a sagging prevention structure for implementing the purpose described above may include: a pallet member supported at least on both sides; and a structural reinforcing member formed with a corresponding length so as to be arranged parallel to the longitudinal direction on the bottom surface of the pallet member, and fixed via a plurality of fastening members.

In this case, the structural reinforcing member may include a cross-section formed in a hollow polygonal shape so as to be in close contact with the bottom surface of the pallet member.

In addition, the above structural reinforcing member may include a plurality of members arranged along the width direction of the pallet member.

In addition, the above structural reinforcing member may further include a member bonded using an adhesive.

In addition, the joint surface of the pallet member and the structural reinforcement member may further include unevenness to increase the bonding area and improve the bonding strength.

In addition, the above structural reinforcing member may further include a structure of a fitting groove and a fitting projection on the bottom surface of the pallet member that is slidably connected along the longitudinal direction.

In addition, the plurality of fastening members may be arranged at a predetermined interval along the longitudinal direction of the pallet member, but the interval between the two sides of the pallet member may be narrower than the interval between the two sides of the pallet member in comparison to the center of the pallet member.

The pallet assembly equipped with a sagging prevention structure according to the present invention having the above configuration can prevent sagging from occurring beyond a permissible value even when a concentrated load is applied to the center of the pallet member by applying a plurality of structural reinforcing members along the longitudinal direction of the bottom surface of the pallet member.

Figure 1 is a perspective view showing a rotary automatic loading warehouse system according to the present invention.
Figure 2 is a perspective view of a pallet assembly equipped with a sagging prevention structure according to the present invention.
Figure 3 is a bottom perspective view of a pallet assembly equipped with a sagging prevention structure according to the present invention.
Figure 4 is a perspective view showing the arrangement of fastening members for fixing a structural reinforcing member according to the present invention.
Figure 5 is a cross-sectional view and a detailed view of Figure 4.
Figure 6 is a plan view of a pallet member according to the present invention.
Figure 7 is a cross-sectional side view showing the joint structure of a structural reinforcing member according to another embodiment of the present invention.
Figure 8 is an analysis result for determining the degree of deflection of a pallet member when a concentrated load is applied to the center of the pallet member according to the present invention.

The configuration and operation of specific embodiments of the present invention will be described in detail with reference to the attached drawings.

Here, when adding reference signs to components of each drawing, it should be noted that identical components are indicated with the same signs as much as possible, even if they are shown in different drawings.

FIG. 1 is a perspective view showing a rotary automatic loading warehouse system according to the present invention, FIG. 2 is a perspective view of a pallet assembly equipped with a sagging prevention structure according to the present invention, and FIG. 3 is a bottom perspective view of a pallet assembly equipped with a sagging prevention structure according to the present invention.

Referring to FIGS. 1 to 3, a pallet assembly (100) equipped with a sagging prevention structure according to a preferred embodiment of the present invention may include a pallet member (110) and a structural reinforcing member (120).

The composition of the present invention is specifically described as follows.

First, the above-mentioned pallet member (110) can be installed in multiple pieces in a rotary manner so that it can continuously rotate up and down (in the direction of the arrow in Fig. 1) within the main body housing (10) having a storage space provided therein.

Specifically, the pallet member (110) can be formed to a predetermined length so that a plurality of baskets (B) (see FIG. 2) containing storage objects can be placed on its upper surface.

In addition, the above-mentioned pallet member (110) can be supported with at least both ends connected to a structure (not shown) such as a chain so that it can be installed in a rotary manner inside the main body housing (10).

In this case, the structure in which the pallet member (110) of the present invention receives power from a motor and rotates continuously in a rotary manner is a previously known technology, so a detailed description thereof will be omitted.

In addition, the front and upper side of the pallet member (110) can be opened so that a basket (B) containing a storage object can be loaded and unloaded through an inlet/outlet (11) provided in the front of the main body housing (10).

In addition, a bending portion (111) may be provided at the tip of the pallet member (110) to reinforce the structure of the pallet member (110) and prevent sagging. Preferably, the bending portion (111) may be formed in a 'ㄷ' shape with the tip bent downwards and the opening facing rearward.

Referring to FIG. 3, the structural reinforcing member (120) can prevent the center of the pallet member (110) supported on both sides from sagging downward due to a load.

Specifically, the structural reinforcing member (120) may be formed with a corresponding length so that it can be arranged parallel to the longitudinal direction on the bottom surface of the pallet member (110). This structural reinforcing member (120) may be fixed to the bottom surface of the pallet member (110) via a plurality of fastening members (130) (see FIG. 4).

Referring to Fig. 5, the structural reinforcement member (120) may be formed in a hollow polygonal shape in cross section so as to be in close contact with the bottom surface of the pallet member (110). Preferably, in the present invention, the cross section of the structural reinforcement member (120) may be formed in a hollow square shape.

Accordingly, it is possible to place the structural reinforcement member (120) in close contact with the bottom surface of the pallet member (110) and to place a plurality of the structural reinforcement members (120) in a row along the width direction of the pallet member (110).

For example, in the present invention, the structural reinforcing members (120) may be placed in close contact with each other in two sets along the width direction of the pallet member (110), and at least two sets may be placed at a predetermined interval along the width direction of the pallet member (110).

In addition, the structural reinforcement member (120) can be bonded to the bottom surface of the pallet member (110) using an adhesive. That is, the structural reinforcement member (120) is first bonded and fixed to the bottom surface of the pallet member (110) using an adhesive, and then a plurality of fastening members (130) are fastened and fixed for the second time, thereby improving the fixing strength of the structural reinforcement member (120).

Referring to FIG. 6, the plurality of fastening members (130) can be arranged at a predetermined interval along the longitudinal direction of the pallet member (110).

Preferably, the fastening member (130) can be arranged with a narrower spacing between the fastening members (130a) fastened to both sides of the pallet member (110) compared to the center of the pallet member (110) so as to maintain a firm fixing state of the structural reinforcing member (120).

In this case, the fastening member (130) may be made of a bolt and a nut, but in the present invention, an example of using a rivet that is easy to fasten and fix will be illustrated.

Meanwhile, in another embodiment, the joint surface of the pallet member (110) and the structural reinforcement member (120) may be provided with unevenness (not shown) to increase the bonding area using an adhesive and improve the bonding strength.

In another embodiment, as illustrated in FIG. 7, the structural reinforcing member (120) can be slidably coupled along the longitudinal direction through the structure of the fitting groove (113) and the fitting projection (123) on the bottom surface of the pallet member (110).

Specifically, a fitting groove (113) is formed on the bottom surface of the pallet member (110) so that the openings are arranged to face each other along the longitudinal direction, and a fitting projection (123) may be provided on both upper sides of the structural reinforcement member (120) so as to be slidably coupled within the fitting groove (113). That is, the structural reinforcement member (120) is fixed to the bottom surface of the pallet member (110) through at least three fixing structures: an adhesive, a sliding fitting combination of the fitting groove (113) and the fitting projection (123), and a fastening member, thereby maintaining a firm fixing state.

As another example, the fitting groove (113) and the fitting projection (123) may be changed to a structure in which they are formed at a predetermined interval (not shown) along the longitudinal direction of the pallet member (110) and are fitted and connected correspondingly. That is, since the fitting groove (113) and the fitting projection (123) are arranged at a plurality of intervals along the longitudinal direction, the structural reinforcement member (120) can be simply connected by sliding along the longitudinal direction just enough for the fitting projection (123) to be fitted and connected within the fitting groove (113) while the structural reinforcement member (120) is placed at the center of the bottom surface of the pallet member (110).

As another example, the structural reinforcing member (120) may be elastically fitted by means of a plurality of snap-fit structure fitting grooves and fitting projections (not shown) formed at a distance along the length direction on the bottom surface of the pallet member (110). That is, the structural reinforcing member (120) can be firmly fixed by being fixed to the bottom surface of the pallet member (110) through at least three fixing structures using an adhesive, a snap-fit structure fitting, and a fastening member.

The pallet assembly (100) equipped with a sagging prevention structure according to the present invention having the above configuration can prevent sagging from occurring beyond an allowable amount even when a concentrated load is applied to the center of the pallet member (110) by applying a plurality of structural reinforcing members (120) to the bottom surface of the pallet member (110).

In particular, by additionally arranging fastening members (130) for fixing the structural reinforcement member (120) to the lower surface of the pallet member (110) on both sides of the central portion of the structural reinforcement member (120), the fixing force can be improved, and accordingly, as shown in the analysis results of FIG. 8, it was confirmed that even when a concentrated load (around 100 kg) was applied to the central portion of the pallet member (110), the measured deflection value (approximately 4.05 mm) did not exceed the allowable value (5 mm).

Although the present invention has been described and illustrated with specific embodiments above, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the technical spirit of the present invention.

10: Main body housing 11: Entry/exit
100 : Pallet assembly 110 : Pallet member
111: bend 113: insertion groove
B: Basket 120: Structural reinforcement member
123: Insertion lug 130: Fastening member

Claims (7)

A pallet member supported on at least two ends; and
A structural reinforcing member formed with a corresponding length so that it can be arranged parallel to the longitudinal direction on the lower surface of the above pallet member and fixed via a plurality of fastening members; including,
On the bottom surface of the above pallet member, a fitting groove is formed with openings arranged to face each other along the length direction,
A pallet assembly having an anti-sagging structure including a fitting projection provided on both upper sides of the above structural reinforcing member that is slidably engaged within the fitting groove.
In the first paragraph,
The above structural reinforcement member is,
A pallet assembly having an anti-sagging structure including a hollow polygonal cross-section formed so as to be in close contact with the lower surface of the pallet member.
In the first paragraph,
The above structural reinforcement member is,
A pallet assembly having an anti-sagging structure including a plurality of pallet members arranged along the width direction of the pallet member.
In the first paragraph,
The above structural reinforcement member is,
A pallet assembly having an anti-sag structure further comprising an adhesive bonding agent.
In paragraph 4,
At the joint surface of the above pallet member and structural reinforcement member,
A pallet assembly having an anti-sagging structure further comprising a protrusion to increase the bonding area and thereby improve bonding strength.
delete In the first paragraph,
The above multiple fastening members are,
A pallet assembly having a sagging prevention structure in which the pallet members are arranged at a predetermined interval along the longitudinal direction of the pallet member, but the interval on both sides of the pallet member is narrower than the center of the pallet member.

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