JP7173441B2 - trolley - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley that carries a load and transports the load.

A cart disclosed in Patent Document 1 is known as a cart that carries a load and transports the load. In the truck disclosed in Patent Document 1, a loading platform portion on which a load is loaded is composed of a plurality of pipe frames. In addition, in the truck of Patent Document 1, the pipe frame is configured to be separable in the front and rear at the intermediate portion, so that the truck can be divided into the front and rear.

Utility Model Registration No. 3066290

Here, in a cart having a loading platform formed of a plate member, a load is loaded on the upper surface of the plate member. By running the trolley with casters attached to the lower surface of the plate member, the load placed on the upper surface of the plate member is conveyed.

In such a truck having a loading platform made of a plate member, it is conceivable to construct the truck so that it can be divided into a first plate member and a second plate member so that it can be stored compactly. Furthermore, in a truck that can be divided into a first plate member and a second plate member, for example, the second joint portion provided on the second plate member is connected to the first joint portion provided on the first plate member. Therefore, a configuration in which the first plate member and the second plate member are integrated is conceivable.

In the carriage that can be divided into the first plate member and the second plate member, the first connecting portion provided on the first plate member and the second connecting portion provided on the second plate member are used to move the load. It is desired that it does not get in the way when loading.

In consideration of the above facts, the present invention provides a carriage that can be divided into a first plate member and a second plate member. To provide a trolley in which a second connecting part hardly becomes an obstacle when a load is loaded.

The trolley according to claim 1 comprises a first plate member on which a load is loaded on the upper surface, a first caster attached to the lower surface side of the first plate member, and a second caster on which the load is loaded on the upper surface. A second plate member, a second caster attached to the lower surface side of the second plate member, a first joint portion provided to the lower surface of the first plate member, and a lower surface of the second plate member, a second coupling portion that is detachably coupled to the first coupling portion to integrate the first plate member and the second plate member.

According to the structure of Claim 1, a 1st board member and a 2nd board member are integrated because a 1st coupling|bond part couple|bonds with a 2nd coupling|bond part. A load is loaded on the upper surfaces of the integrated first plate member and second plate member. Then, the first caster attached to the lower surface of the first plate member and the second caster attached to the lower surface of the second plate member are used to move the trolley so that the first plate member and the second plate A load loaded on the upper surface of the member is conveyed.

Moreover, according to the structure of Claim 1, a 1st board member and a 2nd board member are divided|segmented by isolate|separating a 1st coupling|bond part and a 2nd coupling|bond part. This allows the truck to be stored compactly.

Here, in the structure of claim 1, the first connecting portion is provided on the lower surface of the first plate member on the side opposite to the upper surface on which the load is loaded. Also, the second coupling portion is provided on the lower surface of the second plate member opposite to the upper surface on which the load is loaded. Therefore, the first joint portion and the second joint portion are less likely to interfere with the load when the load is loaded, and are less likely to be an obstacle.

In the trolley according to claim 1 , the first coupling portion includes an insertion portion that projects horizontally from the first plate member, and the second coupling portion is inserted into the insertion portion. and an inserted portion that contacts the lower surface of the second plate member.

According to the configuration of claim 1 , the inserting portion protruding from the first plate member along the horizontal direction is inserted into the inserted portion provided on the second plate member. Thereby, the first plate member and the second plate member are integrated. Here, in the structure of claim 1 , since the insertion part inserted into the insertion receiving part contacts the lower surface of the second plate member, the connecting function is enhanced, and the first plate member and the second plate member are connected. are strongly integrated.

In the truck according to claim 1 , the second connecting portion includes a pressing portion that presses the insertion portion inserted into the insertion receiving portion against the lower surface of the second plate member.

According to the configuration of claim 1 , the pressing part presses the insertion part inserted into the insertion receiving part against the lower surface of the second plate member, so that the first plate member and the second plate member are firmly integrated. be done.

The trolley according to claim 2 is attached to the lower surface of the first plate member in a cantilever manner, and in a state in which the first plate member and the second plate member are integrated, a part of the trolley is attached to the second plate member. A third caster arranged on the lower surface side of the plate member is provided.

According to the configuration of claim 2 , a part of the third caster attached to the lower surface side of the first plate member in a cantilevered manner is placed in the state where the first plate member and the second plate member are integrated. It is arranged on the lower surface side of the two plate members. Therefore, when the first plate member and the second plate member are integrated, the third caster can be arranged between the first plate member and the second plate member.

The trolley according to claim 3 further comprises a holding part provided on the second plate member and holding the third caster in a state in which the first plate member and the second plate member are integrated.

According to the configuration of claim 3 , the holding portion provided in the second plate member holds the third caster in a state in which the first plate member and the second plate member are integrated. positioned in the proper position. Further, the holding portion provided on the second plate member holds the third caster provided on the first plate member, so that the first plate member and the second plate member are firmly integrated.

In the trolley according to claim 4 , each of the first plate member and the second plate member is formed in a frame shape in a plan view, and the first plate member forms one side of the frame-shaped first plate member. , in a state in which the second plate member forming one side of the frame-shaped second plate member is opposed to each other, the first joint portion is joined to the second joint portion to form the first plate member and the second plate member; Integrate with.

According to the configuration of claim 4 , for example, each of the first plate member and the second plate member is formed in a U-shape, and when the first plate member and the second plate member are integrated, the frame The rigidity of each of the first plate member and the second plate member is increased compared to the configuration having a shape (comparative example), and deformation of each of the first plate member and the second plate member can be suppressed.

Furthermore, according to the configuration of claim 4 , in a state in which the plate member forming one side of the frame-shaped first plate member and the plate member forming one side of the frame-shaped second plate member face each other, the first connecting portion Since the first plate member and the second plate member are integrated by connecting to the two connecting parts, compared to the above-mentioned comparative example, the truck when the first plate member and the second plate member are integrated The rigidity of the truck is also increased, and the deformation of the truck can be suppressed.

In the bogie according to claim 5 , the first plate member is laminated on the first lower layer board to which the first caster is attached, and on the upper surface of the first lower layer board, and and a first upper layer plate that is also lightweight, and the second plate member includes a second lower layer plate to which the second caster is attached, and a second lower layer plate laminated on the upper surface of the second lower layer plate, and the second lower layer plate a second top plate that is lighter than the

According to the configuration of claim 5 , the first plate member includes the first lower layer plate to which the first caster is attached, and the first upper layer plate lighter than the first lower layer plate, and the first It has a layered structure in which the upper layer plate is laminated on the upper surface of the first lower layer plate.

Therefore, the first lower layer plate and the first upper layer plate can be made of different materials. Specifically, for example, the first lower layer plate to which the first caster is attached is made of a metal plate having higher rigidity than the first upper layer plate, and the first upper layer plate is lighter than the first lower layer plate. , a plate made of resin or corrugated cardboard can be used. This makes it possible to reduce the weight of the first plate member while ensuring the rigidity of the portion of the first plate member to which the first caster is attached.

Also, the second plate member includes a second lower layer plate to which the second caster is attached, and a second upper layer plate lighter than the second lower layer plate, and the second upper layer plate is the upper surface of the second lower layer plate. is laminated to

Therefore, the second lower layer plate and the second upper layer plate can be made of different materials. Specifically, for example, the second lower layer plate to which the second caster is attached is composed of a metal plate with higher rigidity than the second upper layer plate, and the second upper layer plate lighter than the second lower layer plate is made of resin A plate material formed of cardboard or cardboard can be used. This makes it possible to reduce the weight of the second plate member while ensuring the rigidity of the portion of the second plate member to which the second caster is attached.

According to the configuration of the present invention, in the carriage that can be divided into the first plate member and the second plate member, the first joint provided on the first plate member and the second joint provided on the second plate member The part is less likely to get in the way when loading the load.

It is an exploded perspective view of a truck concerning this embodiment. It is a perspective view of the truck which concerns on this embodiment. It is a top view of the truck which concerns on this embodiment. It is a bottom view of the truck which concerns on this embodiment. FIG. 5 is a side cross-sectional view (cross-sectional view taken along line 5-5 in FIG. 4) of the truck according to the present embodiment; 4 is an enlarged perspective view of one insertion member and one insertion member according to the embodiment; FIG. FIG. 10 is an enlarged perspective view of another insertion member and another insertion member according to the present embodiment; It is an expansion perspective view of the caster and holding|maintenance part which concern on this embodiment. (A) is a diagram showing the carriage in an assembled state, and (B) is a diagram showing the carriage in an accommodated state after division. It is a bottom view of the trolley|bogie which concerns on a modification which does not have a holding|maintenance part. FIG. 11 is a bottom view of a carriage according to a modification in which a gap is formed between a plate member of the first portion and a plate member of the second portion facing the plate member; FIG. 11 is a bottom view of a modified trolley in which the connecting part of the first part has four plug-in members and the connecting part of the second part has four plug-in members; It is an exploded perspective view of a truck concerning other embodiments. It is a sectional side view of the caster periphery in the truck which concerns on other embodiment. FIG. 10 is a front cross-sectional view showing a configuration in which a fixing plate with casters attached thereto is inserted into an insertion portion in a trolley according to another embodiment. It is a bottom view of the truck which concerns on other embodiment.

An example of an embodiment according to the present invention will be described below with reference to the drawings.

The directions of "front", "back", "up", "down", "left", and "right" used in the following explanation are "front", "back", and "up" in the drawings, respectively. , "down", "left", and "right". The directions of "front", "rear", "left", and "right" are defined for convenience of explanation, and the configuration according to the present invention is not limited to these directions. In the figure, the symbol "X" written in "O" means an arrow pointing from the front to the back of the paper surface. In addition, the symbol "·" written in the "o" in the drawing means an arrow pointing from the back to the front of the paper surface.

<Configuration of Carriage 10>
First, the configuration of the truck 10 according to this embodiment will be described. FIG. 1 is an exploded perspective view of the truck 10. FIG. FIG. 2 is a perspective view of the truck 10. FIG. FIG. 3 is a plan view of the truck 10. FIG. FIG. 4 is a bottom view of the truck 10. FIG.

A truck 10 according to the present embodiment is a truck that includes a first portion 11 and a second portion 12 and can be divided into the first portion 11 and the second portion 12, as shown in FIGS. For example, a pallet 19 (a forklift pallet) on which a load 17 is placed is loaded on the truck 10 (see FIG. 5). Note that the load is not limited to the pallet 19, and other load such as a cardboard box may be used.

Each of the first portion 11 and the second portion 12 includes a frame-shaped plate member 30, a reinforcing portion 50, connecting plates 71 and 72, and casters 91, as shown in FIGS. , 92 and a coupling portion 20 .

Furthermore, the first part 11 is provided with casters 93 . On the other hand, the second part 12 has a holding part 90 . The first part 11 and the second part 12 are different in that the first part 11 has casters 93 and the second part 12 has holding parts 90 instead of the casters 93 (different point). do.

The first portion 11 and the second portion 12 are configured point-symmetrically except for the differences described above. In other words, when the first portion 11 is rotated 180 degrees around the vertically extending axis 10A (see FIG. 3), it is configured in the same manner as the second portion 12 except for the differences described above.

Here, the plate member 30 of the first portion 11 is an example of the "first plate member" according to the present invention. The casters 91 and 92 of the first portion 11 are examples of the "first casters" according to the present invention. The plate member 30 of the second portion 12 is an example of the "second plate member" according to the present invention. The casters 91 and 92 of the second portion 12 are an example of "second casters" according to the present invention.

The connecting portion 20 of the first portion 11 is an example of the "first connecting portion" according to the present invention. The connecting portion 20 of the second portion 12 is an example of the "second connecting portion" according to the present invention. Caster 93 is an example of a "third caster" according to the present invention. The holding portion 90 is an example of a "holding portion" according to the present invention.

The configuration of each part of the first portion 11 and the second portion 12 will be described below. In addition, in the first part 11 and the second part 12, the same reference numerals are given to the parts that are configured in the same manner, and the description thereof will be omitted as appropriate.

(The plate member 30 of the first portion 11, the reinforcing portion 50, and the connection plates 71 and 72)
A frame-shaped plate member 30 of the first portion 11 forms a main body portion of the first portion 11 . The plate member 30 includes plate members 31, 32, 33, and 34 (hereinafter referred to as plate members 31 to 34), as shown in FIGS. The plate members 31 and 33 have length along the front-rear direction. The plate members 32 and 34 have length along the left-right direction.

In the plate member 30 of the first portion 11, as shown in FIG. 3, the front end face (one end face) of the plate member 31 and the left end side (one end side) portion of the rear end face of the plate member 32 are abutted and welded. there is Further, the rear end surface (the other end surface) of the plate member 31 and the left end side (one end side) of the front end surface of the plate member 34 are abutted and welded.

Furthermore, as shown in FIG. 3, the front end face (one end face) of the plate member 33 and the right end face (one end face) of the plate member 32 are inclined forward right in plan view, and the front end face of the plate member 33 and the plate member 32 are abutted and welded together. Further, the rear end surface (the other end surface) of the plate member 33 and the right end surface (one end surface) of the plate member 34 are inclined rearward to the right in plan view, and the rear end surface of the plate member 33 and the right end surface of the plate member 34 are aligned. , butted and welded. By welding the end surfaces of the plate members 31 to 34 to each other in this manner, the plate member 30 is formed in a frame shape in plan view. In other words, each side of the frame-shaped plate member 30 is composed of each of the plate members 31 to 34 . Further, the first portion 11 has an outer edge formed in a rectangular shape having a length in the front-rear direction in a plan view. In addition, the shape of the outer edge of the first portion 11 in plan view is not limited to a rectangular shape, and may be another polygonal shape such as a square shape.

The upper surfaces of the plate members 31 to 34 in the frame-shaped first portion 11 are arranged on the same plane. The upper surfaces of the plate members 31 to 34 function as loading surfaces on which objects are loaded.

The reinforcing portion 50 of the first portion 11 has a function of reinforcing the plate member 30 . As shown in FIGS. 1, 2 and 4, the reinforcing section 50 includes reinforcing plates 51, 52, 53 and 54 (hereinafter referred to as reinforcing plates 51 to 54). Each of the reinforcing plates 51-54 protrudes downward from the end of each of the plate members 31-34.

Specifically, the reinforcing plate 51 extends downward from the right end of the plate member 31 and extends from the front end to the rear end of the plate member 31 . The reinforcing plate 52 extends downward from the front end of the plate member 32 and extends from the right end to the left end of the plate member 32 .

The reinforcing plate 53 extends downward from the right end of the plate member 33 and extends from the front end to the rear end of the plate member 33 . The reinforcing plate 54 extends downward from the rear end of the plate member 34 and extends from the right end to the left end of the plate member 34 . The front end surface of the reinforcing plate 53 and the right end surface of the reinforcing plate 52 are butted and welded. The rear end face of the reinforcing plate 53 and the right end face of the reinforcing plate 54 are butted and welded.

In this embodiment, each of the plate members 31 to 34 and each of the reinforcing plates 51 to 54 are integrally formed by a steel angle member having an L-shaped cross section. That is, of the two plate portions of the angle member which are orthogonal to each other and form an L-shape, one serves as each of the plate members 31 to 34 and the other serves as each of the reinforcing plates 51 to 54 . Each of the plate members 31 to 34 and each of the reinforcing plates 51 to 54 may be formed as separate members and joined together by welding, screwing, or the like.

As shown in FIG. 3, each of the connection plates 71 and 72 of the first portion 11 is formed in a triangular plate shape in plan view, and is made of sheet metal, for example.

The connection plate 71 of the first portion 11 is arranged inside the corner portion (corner) between the right end portion of the plate member 32 and the front end portion of the plate member 33 . The connection plate 71 is welded with the side 71A abutted against the right end portion of the rear end surface of the plate member 32 . The side 71B of the connection plate 71 is welded against the front end portion of the left end surface of the plate member 33 .

The connection plate 72 of the first portion 11 is arranged inside the corner portion (corner) between the right end portion of the plate member 34 and the rear end portion of the plate member 33 . The connection plate 72 is welded with the side 72A abutted against the right end portion of the front end surface of the plate member 34 . A side 72B of the connection plate 72 is abutted and welded to the rear end portion of the left end surface of the plate member 33 .

The shape of the connection plates 71 and 72 of the first portion 11 in a plan view is not limited to a triangular shape, and may be changed to other polygonal shapes such as a square or rectangular shape, fan shape, or the like as appropriate.

As described above, the plate member 30, the reinforcing portion 50, and the connecting plates 71, 72 of the second portion 12 are configured point-symmetrically with the plate member 30, the reinforcing portion 50, and the connecting plates 71, 72 of the first portion 11. Therefore, the explanation is omitted.

(Casters 91 and 92 of the first portion 11)
Each of casters 91 and 92 of first portion 11 is attached to the lower surface side of plate member 30 of first portion 11 . Specifically, the caster 91 includes a running wheel 91A, a support member 91B, and a mounting plate 91C. The caster 92 includes a running wheel 92A, a support member 92B, and a mounting plate 92C.

The support member 91B of the caster 91 supports the running wheel 91A rotatably around an axis along the horizontal direction. Further, the mounting plate 91C supports the support member 91B rotatably around an axis extending in the vertical direction. Since the caster 92 is configured in the same manner as the caster 91, the description thereof is omitted.

The mounting plate 91C of the caster 91 is attached to the lower surface of the connecting plate 71, the lower surface of the right end portion of the plate member 32, and the lower surface of the front end portion of the plate member 33 with bolts 81 as fastening members. Specifically, four bolts 81 are used to fix the four corners of the mounting plate 91C. Thereby, the connection plate 71, the right end portion of the plate member 32, and the front end portion of the plate member 33 are firmly connected.

The mounting plate 92C of the caster 92 is attached to the lower surface of the connection plate 72, the lower surface of the right end portion of the plate member 34, and the lower surface of the rear end portion of the plate member 33 with bolts 82 as fastening members. Specifically, four bolts 82 are used to fix the four corners of the mounting plate 92C. Thereby, the connection plate 72, the right end portion of the plate member 34, and the rear end portion of the plate member 33 are firmly connected.

As shown in FIG. 5, the upper parts of the running wheels 91A and 92A overlap the reinforcing plates 51 to 54 in the height direction. dimension to the ground surface) is kept low. Moreover, the running wheels 91A and 92A may be composed of a plurality of wheels. In addition, from the viewpoint of ensuring the flatness of the loading surface on which the load is to be placed, the length of the shafts of the bolts 81 and 82 should be such that the tips of the shafts do not protrude from the upper surface of the plate member 30 when screwed. , is preferably set so as to be located at a height equal to or lower than the upper surface.

The casters 91 and 92 of the second portion 12 are configured in the same manner as the casters 91 and 92 of the first portion 11, so the description thereof is omitted.

(Connecting portion 20 of first portion 11 and connecting portion 20 of second portion 12)
The connecting portion 20 of the second portion 12 has a function of detachably connecting to the connecting portion 20 of the first portion 11 to integrate the first portion 11 and the second portion 12 . In other words, the plate member 30 of the first portion 11 and the plate member 30 of the second portion 12 are integrated by the connection between the connecting portion 20 of the second portion 12 and the connecting portion 20 of the first portion 11 .

Specifically, as shown in FIGS. 1, 2 and 4, each of the coupling portion 20 of the first portion 11 and the coupling portion 20 of the second portion 12 includes insert members 23 and 43 and a It comprises members 24,44 and bolts 26,46.

The insert members 23 and 43 of the first portion 11 are an example of the "insert portion" according to the present invention. The inserted members 24 and 44 of the second portion 12 are an example of the "inserted portion" according to the present invention. The bolts 26, 46 of the second portion 12 are examples of the "pressing portion" according to the present invention. Note that the insertion spaces 25 and 45, which will be described later, may be understood as an example of the "inserted portion" according to the present invention.

(Inserting member 23 of first portion 11 and inserted member 24 of second portion 12)
The insertion member 23 of the first portion 11 is a member that is inserted into the insertion space 25 of the insertion member 24 of the second portion 12, as shown in FIG. Specifically, the insertion member 23 is made of, for example, a block-shaped metal material. The insertion member 23 is fixed by welding with its upper surface in contact with the lower surface of the plate member 32 . Further, the insertion member 23 is fixed by welding with its side surface (front surface) in contact with the inner surface (rear surface) of the reinforcing plate 52 . A left end portion (tip portion) of the insertion member 23 protrudes leftward from the plate member 32 along the horizontal direction.

The member to be inserted 24 of the second portion 12 is formed in an L shape when viewed in the front-rear direction. The inserted member 24 has a first wall 24A projecting downward from the plate member 34 and a second wall 24B projecting rightward from the lower end of the first wall 24A. The first wall 24A and the second wall 24B are integrally formed. The upper end surface of the first wall 24A is fixed to the plate member 34 by welding. Front end surfaces of the first wall 24A and the second wall 24B are fixed to the reinforcing plate 54 by welding. Thereby, the member to be inserted 24 of the second portion 12 has an insertion space 25 between the second wall 24</b>B and the plate member 34 . The insertion space 25 opens rightward and rearward. A rightward opening of the insertion space 25 serves as an insertion port into which the insertion member 23 is inserted.

The bolt 26 is screwed into the second wall 24B of the inserted member 24 from below. By screwing the bolt 26 upward (toward the side of the plate member 34), the insertion member 23 inserted into the insertion space 25 is pressed against the lower surface of the plate member 34 with the tip of the bolt, and the insertion member 23 is fixed. Further, by rotating and loosening the bolt 26 in a direction opposite to the screwing direction to release the pressing of the insertion member 23 against the lower surface of the plate member 34, the insertion member 23 can be extracted from the insertion space 25. Become. In other words, the insertion member 23 can be separated from the insertion member 24 by loosening the bolt 26 .

Note that the insertion member 23 of the second portion 12 is configured in the same manner as the insertion member 23 of the first portion 11, so description thereof will be omitted. Further, the member to be inserted 24 of the first portion 11 is configured in the same manner as the member to be inserted 24 of the second portion 12, so the description thereof will be omitted.

(The insertion member 43 of the first portion 11 and the member to be inserted 44 of the second portion 12)
The insertion member 43 of the first portion 11 is a member that is inserted into the insertion space 45 of the insertion member 44 of the second portion 12, as shown in FIG. Specifically, the insertion member 43 is made of, for example, a block-shaped metal material. The insertion member 43 is fixed by welding with its upper surface in contact with the lower surface of the plate member 31 of the first portion 11 . Further, the insertion member 43 is fixed by welding with its right side surface in contact with the left side surface of the reinforcing plate 51 of the first portion 11 . A left end portion (tip portion) of the insertion member 43 protrudes leftward from the plate member 31 of the first portion 11 along the horizontal direction.

The member to be inserted 44 of the second portion 12 is formed in a U-shape with an open top when viewed in the left-right direction. The inserted member 44 includes a pair of first walls 44A projecting downward from the plate member 31 of the second portion 12, and a second wall 44A connected from one lower end of the pair of first walls 44A to the other lower end of the pair of first walls 44A. and a wall 44B. The pair of first walls 44A and second walls 44B are integrally formed. The upper end surfaces of the pair of first walls 44A are fixed to the plate member 31 of the second portion 12 by welding. Left end surfaces of the pair of first wall 44A and second wall 44B are fixed to the reinforcing plate 51 of the second portion 12 by welding. Thereby, the member to be inserted 44 of the second portion 12 has an insertion space 45 surrounded by a pair of the first wall 44A, the second wall 24B, and the plate member 34. As shown in FIG. The insertion space 45 has an insertion port that opens rightward.

The bolt 46 is screwed into the second wall 44B of the inserted member 44 from below. By screwing the bolt 46 upward (toward the plate member 31 side), the insertion member 43 inserted into the insertion space 45 is pressed against the lower surface of the plate member 31 with the tip of the bolt, thereby fixing the insertion member 43 . Further, by rotating and loosening the bolt 46 in a direction opposite to the screwing direction to release the pressing of the insertion member 43 against the lower surface of the plate member 31 , the insertion member 43 can be extracted from the insertion space 45 . Become. In other words, the insertion member 43 can be separated from the insertion member 44 by loosening the bolt 46 .

Note that the insertion member 43 of the second portion 12 is configured in the same manner as the insertion member 43 of the first portion 11, so description thereof will be omitted. Further, since the member to be inserted 44 of the first portion 11 is configured in the same manner as the member to be inserted 44 of the second portion 12, description thereof will be omitted.

(Caster 93 of first portion 11 and holding portion 90 of second portion 12)
The casters 93 are arranged on the lower surface of the plate member 30 of the first portion 11, as shown in FIG. The caster 93, as shown in FIG. 8, includes a running wheel 93A, a support member 93B, and a mounting plate 93C. In the caster 93, the supporting member 93B supports the running wheel 93A rotatably around an axis along the left-right direction. Furthermore, the support member 93B is fixed to the mounting plate 93C. In other words, unlike the structure of the casters 91 and 92, the mounting plate 93C supports the support member 93B in a state in which rotation about the axis along the vertical direction is restricted.

As shown in FIGS. 1 and 8, the mounting plate 93C of the caster 93 is cantilevered on the lower surface of the central portion of the plate member 31 of the first portion 11 in the longitudinal direction (front-rear direction) and serves as a plurality of fastening members (for example, two mounting plates 93C). ) are attached by bolts 83. As a result, the caster 93 has the mounting plate 93</b>C (an example of a portion) arranged on the lower surface side of the plate member 30 of the second portion 12 in a state in which the first portion 11 and the second portion 12 are integrated. Furthermore, the caster 93 (specifically, the running wheel 93A) is arranged in the central portion of the carriage 10 in a state in which the first portion 11 and the second portion 12 are integrated.

As shown in FIG. 2, the holding part 90 has a function of holding casters 93 in a state in which the first part 11 and the second part 12 are integrated. Specifically, as shown in FIG. 8, the holding portion 90 includes holding members 94 and 96 .

Each of the holding members 94 and 96 is L-shaped when viewed in the left-right direction. The holding member 94 has a first wall 94A projecting downward from the plate member 31 of the second portion 12, and a second wall 94B projecting rearward from the lower end of the first wall 94A. The first wall 94A and the second wall 94B are integrally formed. The upper end surface of the first wall 94A is fixed to the plate member 31 of the second portion 12 by welding. Left end surfaces of the first wall 94A and the second wall 94B are fixed to the reinforcing plate 51 of the second portion 12 by welding.

Thereby, an insertion space 95 is formed between the second wall 24B of the holding member 94 and the plate member 31 of the second portion 12 . The insertion space 95 opens rightward and rearward. The rightward opening of the insertion space 95 serves as an insertion port into which the front left portion of the mounting plate 93C is inserted.

The holding member 96 has a first wall 96A projecting downward from the plate member 31 of the second portion 12, and a second wall 96B projecting forward from the lower end of the first wall 96A. The first wall 96A and the second wall 96B are integrally formed. The upper end surface of the first wall 96A is fixed to the plate material 31 by welding. Left end surfaces of the first wall 96A and the second wall 96B are fixed to the reinforcing plate 51 by welding.

Thereby, an insertion space 97 is formed between the second wall 96B of the holding member 96 and the plate member 31 of the second portion 12 . The insertion space 97 opens rightward and forward. A rightward opening of the insertion space 97 serves as an insertion port into which the rear left portion of the mounting plate 93C is inserted.

<Supplement to the configuration of the truck 10>
As shown in FIGS. 3 and 4, when the first portion 11 and the second portion 12 are integrated, the carriage 10 has a square outer edge. The length of one side of the truck 10 is, for example, approximately 1 m. The shape of the outer edge of the carriage 10 is not limited to a square, and may be other polygonal shapes such as a rectangular shape.

In the carriage 10, the plate member 31 forming one side of the frame-shaped plate member 30 in the first portion 11 and the plate member 31 forming one side of the frame-shaped plate member 30 in the second portion 12 face each other. Part 11 and second part 12 are integrated. Specifically, the first portion 11 and the second portion 12 are integrated with the plate member 31 of the first portion 11 and the plate member 31 of the second portion 12 arranged in parallel. More specifically, the first portion 11 and the second portion 12 are integrated while the plate member 31 of the first portion 11 and the plate member 31 of the second portion 12 are in contact with each other. The plate member 31 of the first portion 11 is an example of the "first plate member" according to the present invention. The plate material 31 of the second portion 12 is an example of the "second plate material" according to the present invention.

Further, in the state where the first portion 11 and the second portion 12 are integrated, the upper surface of the plate member 30 of the first portion 11 and the upper surface of the plate member 30 of the second portion 12 are positioned on the same plane. That is, in the state in which the first portion 11 and the second portion 12 are integrated, the upper surface of the plate member 30 of the first portion 11 and the upper surface of the plate member 30 of the second portion 12 are horizontally aligned. . A pallet 19 on which cargo 17 is placed is placed as a load on the aligned upper surface (see FIG. 9A). When the first portion 11 and the second portion 12 are integrated, the lower surface of the plate member 30 of the first portion 11 and the lower surface of the plate member 30 of the second portion 12 are horizontally aligned.

Furthermore, in the state in which the first portion 11 and the second portion 12 are integrated, the caster 93 (specifically, the running wheel 93A) is arranged in the central portion of the carriage 10 as shown in FIG. In addition, the four casters configured by the casters 91 and 92 of the first portion 11 and the casters 91 and 92 of the second portion 12 are installed in the four corners of the truck 10 when the first portion 11 and the second portion 12 are integrated. placed in

The width (dimension in the direction perpendicular to the length direction) of each of the plate members 31 to 34 is, for example, 30 mm or more and 50 mm or less. The width (dimension in the vertical direction) of each of the reinforcing plates 51 to 54 is also, for example, 30 mm or more and 50 mm or less. Further, the thickness of each of the plate members 31 to 34 and each of the reinforcing plates 51 to 54 is, for example, 3 mm or more and 5 mm or less. The outer diameters of the running wheels 91A, 92A, 93A of the casters 91, 92, 93 are, for example, 60 mm or more and 100 mm or less. The width of each of the plate members 31 to 34, the width of each of the reinforcing plates 51 to 54, the thickness of each of the plate members 31 to 34 and each of the reinforcing plates 51 to 54, and the running wheels 91A of the casters 91, 92, and 93 , 92A and 93A are not limited to the above dimensions.

As shown in FIG. 1, a sheet-like non-slip portion 60 is attached to the upper surface of each of the plate members 31-34. The non-slip portion 60 includes a known non-slip material such as rubber or silicone, and a relatively large frictional force is generated between the non-slip portion 60 and an object placed on the non-slip portion 60. . As a result, the load loaded on the upper surface of the plate member 30 is prevented from sliding down from the upper surface of the plate member 30 .

In the present embodiment, the non-slip portion 60 is a thin sheet that is practically negligible, but the present invention is not limited to this. For example, the non-slip portion may be realized by a method such as painting with a paint containing a non-slip material or embedding the non-slip material in the top of each of the plate members 31 to 34 . Moreover, the non-slip portions can be arranged not only on the upper surfaces of the plate members 31 to 34, which are angle members, but also on the upper surfaces of the connecting plates 71 and 72. FIG.

<Action and Effect of Carriage 10>
Next, the effects of the truck 10 according to this embodiment will be described.

According to the truck 10 according to the present embodiment, the divided first portion 11 and second portion 12 are integrated as follows. That is, as shown in FIG. 2, the inserting member 23 of the first portion 11 is inserted into the inserting space 25 of the inserted member 24 of the second portion 12 (see FIG. 6). Also, the insertion member 43 of the first portion 11 is inserted into the insertion space 45 of the member to be inserted 44 of the second portion 12 (see FIG. 7). Also, the mounting plate 93C of the caster 93 is inserted into the insertion space 95 of the holding member 94 and the insertion space 97 of the holding member 96 (see FIG. 8). Also, the insertion member 43 of the second portion 12 is inserted into the insertion space 45 of the member to be inserted 44 of the first portion 11 . Also, the insertion member 23 of the second portion 12 is inserted into the insertion space 25 of the member to be inserted 24 of the first portion 11 .

Then, by screwing each bolt 26 and each bolt 46, each insertion member 23 and each insertion member 43 are pressed against the lower surface of each plate member 30 with the tip of the bolt, and each insertion member 23 and each insertion member 43 fixed. In this way, the coupling portion 20 (the insertion members 23 and 43 and the members to be inserted 24 and 44) of the first portion 11 is connected to the coupling portion 20 (the insertion members 23 and 43 and the member to be inserted 24) of the second portion 12. , 44). Thereby, as shown in FIG. 2, the first part 11 and the second part 12 are integrated. Specifically, the plate member 30 of the first portion 11 and the plate member 30 of the second portion 12 are integrated.

For example, a pallet 19 on which cargo 17 is placed is loaded on the upper surface of the plate member 30 of the integrated first portion 11 and second portion 12, as shown in FIG. 9(A). The casters 91 , 92 , 93 are used to move the carriage 10 in the front-rear direction, thereby conveying the pallet 19 . The carriage 10 can be used, for example, when transporting the pallet 19 to the back side of a loading platform such as a truck.

According to the configuration of the carriage 10, as shown in FIGS. 2 and 8, the caster cantilevered on the plate member 30 of the first portion 11 in the state where the first portion 11 and the second portion 12 are integrated. 93 are retained by retaining members 94 and 96 of the second portion 12 . Thereby, a part of the caster 93 is arranged on the lower surface side of the plate member 30 of the second portion 12 . As a result, casters 93 are positioned between first portion 11 and second portion 12, as shown in FIG. Specifically, the casters 93 are arranged in the central portion of the truck 10 .

According to the configuration of the truck 10, the casters 93 arranged in the central portion of the truck 10 restrict the rotation of the running wheels 93A about their axes along the vertical direction. On the other hand, four casters (casters 91 and 92) arranged at the four corners of the carriage 10 support running wheels 91A and 92A rotatably around axes along the vertical direction.

As a result, the carriage 10 can be rotated around the vertical axis with the running wheels 93A of the casters 93 as fulcrums. Therefore, when transporting the pallet 19, the carriage 10 can turn in a small radius. Therefore, the direction of the carriage 10 can be changed even in a relatively narrow space such as a loading platform of a truck or the like.

Further, according to the configuration of the truck 10, the integrated first portion 11 and second portion 12 are divided as follows. That is, after loosening each bolt 26 and each bolt 46 , each insertion member 23 is extracted from each insertion space 25 and each insertion member 43 is extracted from insertion space 45 . Further, the mounting plate 93C of the caster 93 is extracted from the insertion space 95 and the insertion space 97. As shown in FIG. In this manner, the coupling portion 20 of the first portion 11 and the coupling portion 20 of the second portion 12 are separated. Thereby, as shown in FIG. 1, the first portion 11 and the second portion 12 are divided. Specifically, the plate member 30 of the first portion 11 and the plate member 30 of the second portion 12 are separated. As a result, for example, as shown in FIG. 9B, the truck 10 can be compactly accommodated in the arrangement space 13 provided below the loading platform 15 of a truck or the like.

Here, in the configuration of the carriage 10, the coupling portion 20 (the insertion members 23, 43 and the members to be inserted 24, 44) of the first portion 11 and the second portion 12 is located on the side opposite to the upper surface on which the load is loaded. is provided on the lower surface of the plate member 30. Therefore, the connecting portion 20 of the first portion 11 and the second portion 12 is less likely to interfere with the load when the load is loaded, and is less likely to be an obstacle.

Further, since the reinforcing plates 51 to 54 provided at the ends of the plate members 31 to 34 increase the rigidity of the plate member 30, the plate member 30 is less likely to deform. As a result, the running of the truck 10 is stabilized. Moreover, each of the reinforcing plates 51 to 54 is provided so as to extend downward from the end portion of each of the plate members 31 to 34 and does not protrude above the plate member 30 . Therefore, each of the reinforcing plates 51 to 54 is less likely to interfere with the loading of the load.

Further, according to the configuration of the carriage 10, each insertion member 23 inserted into each insertion space 25 and each insertion member 43 inserted into each insertion space 45 come into contact with the lower surface of the plate member 30. Therefore, the binding function is enhanced. Furthermore, by screwing each bolt 26 and each bolt 46 , each insertion member 23 and each insertion member 43 are pressed against the lower surface of each plate member 30 with the tip of the bolt. Thereby, the first portion 11 and the second portion 12 are firmly integrated.

Further, according to the configuration of the carriage 10, in the state where the first portion 11 and the second portion 12 are integrated, the holding member 94 and the holding member 96 of the second portion 12 hold the casters 93 as described above. Therefore, the caster 93 is positioned at a proper position. Moreover, the holding member 94 and the holding member 96 of the second portion 12 hold the casters 93 of the first portion 11, so that the first portion 11 and the second portion 12 are firmly integrated.

Further, according to the configuration of the carriage 10, the first portion 11 and the second portion 12 are integrated with the plate member 31 of the first portion 11 and the plate member 31 of the second portion 12 facing each other. Thereby, for example, each of the plate member 30 of the first portion 11 and the plate member 30 of the second portion 12 is formed in a U-shape, and the plate member 30 of the first portion 11 and the plate member 30 of the second portion 12 The rigidity of each of the plate members 30 of the first portion 11 and the second portion 12 is increased compared to the configuration (comparative example) that forms a frame shape when integrated, and the plate members of the first portion 11 and the second portion 12 Deformation of each of 30 can be suppressed. Furthermore, compared with the comparative example described above, the rigidity of the truck 10 as a whole when the first portion 11 and the second portion 12 are integrated is increased, and deformation of the truck 10 can be suppressed.

<Modification>
In the above embodiment, as described above, the connecting portion 20 of the first portion 11 and the connecting portion 20 of the second portion 12 are connected by inserting the insertion members 23 and 43 into the insertion spaces 25 and 45. Although coupled, it is not limited to this configuration. For example, each of the coupling portions 20 of the first portion 11 and the second portion 12 may be provided with a groove portion, and the groove portion of the first portion 11 and the groove portion of the second portion 12 may be coupled by engaging each other. The coupling portion 20 of the portion 11 and the second portion 12 may be configured to couple with each other.

In the embodiment described above, the insertion members 23 and 43 inserted into the insertion spaces 25 and 46 are pressed against the lower surface of the plate member 30 with the bolts 26 and 46 as described above, but the present invention is not limited to this. For example, a configuration in which the insertion members 23 and 43 are press-fitted into the insertion spaces 25 and 46 may be configured without the bolts 26 and 46 .

In the above embodiment, as described above, the second portion 12 has the holding portion 90 that holds the caster 93. However, as shown in FIG. good. Even in this case, for example, the caster 93 is arranged such that the mounting plate 93C contacts the lower surface of the plate member 30 (plate material 31) of the second portion 12 in the state in which the first portion 11 and the second portion 12 are integrated. Configured.

In the above-described embodiment, the plate member 31 of the first portion 11 and the plate member 31 of the second portion 12 are in contact with each other when the first portion 11 and the second portion 12 are integrated as described above. As shown in 11 , a configuration in which a gap is formed between the plate member 31 of the first portion 11 and the plate member 31 of the second portion 12 may be employed. With this configuration, the space for attaching the mounting plate 93C of the caster 93 is increased, so that a large caster can be attached compared to the above-described embodiment. Further, in this configuration, for example, the plate members 32 and 34 of the first portion 11 protrude leftward from the plate member 31 , and the plate members 32 and 34 of the second portion 12 protrude to the right side of the plate member 31 . In addition, in this configuration, since the distance to the inserted members 24 and 44 is increased by the gap between the first portion 11 and the second portion 12, the inserted members 23 and 43 are elongated in the left-right direction. Configured.

In the above embodiment, each of the connecting portions 20 of the first portion 11 and the second portion 12 has the inserting members 23, 43 and the inserted members 24, 44, but the present invention is not limited to this. For example, as shown in FIG. 12, the connecting portion 20 of the first portion 11 has insertion members 23, 43 instead of the receiving members 24, 44, and the connecting portion 20 of the second portion 12 A configuration having inserted members 24 and 44 instead of the insertion members 23 and 43 may be employed. That is, the coupling portion 20 of the first portion 11 may have two insertion members 23 and 43, and the coupling portion 20 of the second portion 12 may have two insertion members 24 and 44. . In this manner, it is possible to arbitrarily set one or the other of the insertion members 23 and 43 and the members to be inserted 24 and 44 to be arranged in the first portion 11 or the second portion 12 . Moreover, as the connecting portion 20 of the first portion 11 and the second portion 12, for example, the inserting member 43 and the inserted member 44 may be omitted. Further, as the connecting portion 20 of the first portion 11 and the second portion 12, an inserting member and an inserted member may be added.

<Other embodiments>
In the above embodiment, steel angle members are used to form the plate members 30 of the first portion 11 and the second portion 12, but the present invention is not limited to this. For example, as shown in FIG. 13, a plate member 130 having a layered structure may be used as the plate member of the first portion 11 and the second portion 12 .

Each of the plate members 130 of the first portion 11 and the second portion 12 includes a lower plate 140, an upper plate 132, and fixed plates 133, 134. As shown in FIG. Further, the plate member 130 of the first portion 11 has a fixing plate 135 . In this respect, the first portion 11 and the second portion 12 are different. Note that the first portion 11 and the second portion 12 are configured point-symmetrically, except for the differences described above. In other words, when the first portion 11 is rotated 180 degrees around the vertically extending axis 10A (see FIG. 16), it is configured in the same manner as the second portion 12 except for the differences described above. In the first part 11 and the second part 12, the same reference numerals are given to the parts configured in the same manner, and the explanation thereof will be omitted as appropriate.

Here, the lower plate 140 in the plate member 130 of the first portion 11 is an example of the "first lower plate" according to the present invention. The upper plate 132 of the plate member 130 of the first portion 11 is an example of the "first upper plate" according to the present invention. The lower plate 140 of the plate member 130 of the second portion 12 is an example of the "second lower plate" according to the present invention. The upper plate 132 of the plate member 130 of the second portion 12 is an example of the "second upper plate" according to the present invention.

(The plate member 130 of the first portion 11)
As shown in FIG. 13, the lower layer plate 140 of the plate member 130 of the first portion 11 is a plate member to which casters 91 and 92 are attached. The lower layer plate 140 is formed in a substantially rectangular shape having a length in the front-rear direction in plan view. The lower plate 140 is made of a material having higher rigidity than the upper plate 132 . Specifically, the lower plate 140 is made of, for example, a metal plate such as an aluminum plate.

Holes 143 penetrating vertically are formed in corner portions (corner portions) on the right end side and the front end side of the lower layer plate 140 . The hole 143 has a square shape that is the same as or slightly larger than the mounting plate 91C of the caster 91 in plan view (see FIG. 14). That is, the hole 143 is sized to accommodate the mounting plate 91C of the caster 91 .

As shown in FIG. 13, a frame-shaped stepped portion 145 is formed on the outer periphery of the hole 143 at a position one step lower than the upper surface of the lower layer plate 140 . The outer edge of the stepped portion 145 is quadrangular in plan view.

The fixing plate 133 is formed in a rectangular shape that is slightly larger than the mounting plate 91C of the caster 91 and the hole 143 (see FIG. 14). Furthermore, the fixing plate 133 has a rectangular shape that is the same size as or slightly smaller than the rectangular outer edge of the stepped portion 145 . That is, the fixed plate 133 is sized to fit within the stepped portion 145 .

A mounting plate 91C for the caster 91 is fixed to the lower surface of the fixing plate 133 by fixing means such as bolts. After the caster 91 is passed through the hole 143 from above, the fixed plate 133 to which the caster 91 is fixed is placed on the stepped portion 145, and the fixed plate 133 is fixed to the stepped portion 145 by a fixing means such as a bolt. Fixed.

On the other hand, holes 144 penetrating vertically are formed in corner portions (corner portions) on the right end side and the rear end side of the lower layer plate 140 . The hole 144 has a rectangular shape that is the same as or slightly larger than the mounting plate 92C of the caster 92 in plan view (see FIG. 14). That is, the hole 144 is sized to accommodate the mounting plate 92C of the caster 92 .

As shown in FIG. 13, a frame-shaped stepped portion 146 is formed on the outer periphery of the hole 144 at a position one step lower than the upper surface of the lower layer plate 140 . The outer edge of the stepped portion 146 is quadrangular in plan view.

The fixing plate 134 is formed in a rectangular shape that is slightly larger than the mounting plate 92C of the caster 92 and the hole 144 (see FIG. 14). Furthermore, the fixed plate 134 has a rectangular shape that is the same size as or slightly smaller than the rectangular outer edge of the stepped portion 146 . That is, the fixed plate 134 is sized to fit within the stepped portion 146 .

A mounting plate 92C for the casters 92 is fixed to the lower surface of the fixing plate 134 by fixing means such as bolts. After the casters 92 are passed through the holes 144 from above, the fixing plate 134 to which the casters 92 are fixed is placed on the stepped portion 146, and the fixing plate 134 is fixed to the stepped portion 146 by fixing means such as bolts. Fixed.

As shown in FIG. 13 , a rectangular notch 147 penetrating vertically is formed at the left end of the lower layer plate 140 at its central portion in the front-rear direction. The notch 147 has a rectangular shape equal to or slightly larger than the size obtained by equally dividing the mounting plate 93C (see FIG. 15) of the caster 93 along the front-rear direction at the center in the left-right direction. That is, the notch 147 is sized to accommodate the right half of the mounting plate 93C of the caster 93 .

Around the notch 147 (front side, rear side, and right side), a U-shaped stepped portion 149 is formed at a position one step lower than the upper surface of the lower layer plate 140 .

The fixing plate 135 is also formed in a rectangular shape that is one size larger than the mounting plate 93C of the caster 93 . Is the size of the outer edge of the square shape of the stepped portion 149 the same as the size obtained by equally dividing the fixing plate 135 along the front-rear direction at the center in the left-right direction (the size obtained by equally dividing the fixing plate 135 along the imaginary line SA in FIG. 13)? Slightly larger size. That is, the right half of the fixing plate 135 is sized to fit within the stepped portion 145 .

As shown in FIG. 15, a mounting plate 93C for the casters 93 is fixed to the lower surface of the fixing plate 135 by fixing means such as bolts. The fixed plate 135 is placed on the stepped portion 149 with the caster 93 positioned below the lower layer plate 140, and the fixed plate 135 is fixed to the stepped portion 149 by a fixing means such as a bolt. Thereby, the caster 93 is cantilevered on the lower surface side of the plate member 130 (lower layer plate 140).

The upper surfaces of the fixing plates 133 , 134 , 135 fixed to the lower layer plate 140 are arranged on the same plane as the upper surface of the lower layer plate 140 . An upper plate 132 is laminated on the upper surface of the lower plate 140 and the upper surfaces of the fixing plates 133 , 134 and 135 . The upper plate 132 is fixed to the lower plate 140 by fixing means such as an adhesive. A material lighter than that of the lower plate 140 is used for the upper plate 132 . Specifically, for example, a resin plate, a cardboard plate, or the like is used as the upper layer plate 132 .

In the second part 12, the upper plate 132 is laminated on the upper surface of the lower plate 140, so that it is fixed to the lower plate 140 of the first part 11 between the stepped portion 149 of the lower plate 140 and the upper plate 132. An insertion portion (insertion space) 150 into which the fixed plate 135 is inserted is formed. Furthermore, the notch portion 147 functions as a receiving portion (accommodating space) in which the mounting plate 93C of the caster 93 is accommodated. When the first portion 11 and the second portion 12 are integrated, the fixing plate 135 of the first portion 11 is inserted into the inserted portion 150 to hold the caster 93 . That is, the inserted portion 150 functions as a holding portion that holds the caster 93 .

(The insertion members 23 and 43 of the first portion 11 and the members to be inserted 124 and 44 of the second portion 12)
The insertion members 23 and 43 of the first portion 11 have their upper surfaces facing the lower surface of the lower plate 140 so that the left ends (tips) of the insertion members 23 and 43 project leftward from the left end of the lower plate 140 of the first portion 11 along the horizontal direction. It is fixed by welding while in contact with the Further, the inserted member 44 of the second portion 12 is fixed to the lower surface of the lower layer plate 140 of the second portion 12 by welding at the upper end surfaces of the pair of first walls 44A.

In another embodiment, the second portion 12 is provided with a plug-in member 124 instead of the plug-in member 24 . Similar to the member to be inserted 44, the member to be inserted 124 is formed in a U shape with an open upper side when viewed in the left-right direction. The inserted member 124 includes a pair of first walls 124A projecting downward from the lower layer plate 140 of the second portion 12, and a second wall connecting the pair of first walls 124A from one lower end to the other lower end of the pair of first walls 124A. and two walls 124B. The pair of first walls 124A and second walls 124B are integrally formed. The upper end surfaces of the pair of first walls 124A are fixed to the lower surface of the lower layer plate 140 of the second portion 12 by welding. Thereby, the member to be inserted 124 of the second portion 12 has an insertion space 125 surrounded by a pair of the first wall 124A, the second wall 124B and the lower layer plate 140. As shown in FIG. The insertion space 125 has an insertion port that opens leftward. The bolt 26 is screwed into the second wall 124B.

<Effects of trolley 10 according to another embodiment>
Next, the effects of the trolley 10 according to another embodiment will be described.

According to the truck 10 according to another embodiment, the divided first portion 11 and second portion 12 are integrated as follows. That is, as shown in FIG. 16, the inserting member 23 of the first portion 11 is inserted into the inserting space 125 of the inserted member 124 of the second portion 12 . Also, the insertion member 43 of the first portion 11 is inserted into the insertion space 45 of the member to be inserted 44 of the second portion 12 . Also, the fixing plate 135 of the first portion 11 is inserted into the insertion portion 150 of the second portion 12 (see FIG. 15). Also, the insertion member 43 of the second portion 12 is inserted into the insertion space 45 of the member to be inserted 44 of the first portion 11 . Also, the insertion member 23 of the second portion 12 is inserted into the insertion space 125 of the member to be inserted 124 of the first portion 11 .

Then, by screwing each bolt 26 and each bolt 46, each insertion member 23 and each insertion member 43 are pressed against the lower surface of each plate member 130 with the tip of the bolt, and each insertion member 23 and each insertion member 43 fixed. In this way, the coupling portion 20 (the insertion members 23 and 43 and the members to be inserted 124 and 44) of the first portion 11 is connected to the coupling portion 20 (the insertion members 23 and 43 and the member to be inserted 124) of the second portion 12. , 44). Thereby, as shown in FIG. 16, the first portion 11 and the second portion 12 are integrated. Specifically, the plate member 130 of the first portion 11 and the plate member 130 of the second portion 12 are integrated.

A load is loaded on the upper surface of the plate member 130 of the integrated first portion 11 and second portion 12 . By running the cart 10 in the front-rear direction with the casters 91, 92, and 93, the load is conveyed. The carriage 10 can be used, for example, when transporting a load to the back side of a loading platform such as a truck.

According to the configuration of the truck 10 according to another embodiment, in the state in which the first portion 11 and the second portion 12 are integrated, the casters 93 attached to the plate member 130 of the first portion 11 in a cantilevered manner By inserting the fixing plate 135 into the insertion portion 150, it is held by the plate member 130 of the second portion 12 (see FIG. 15). Thereby, a portion of the caster 93 is arranged on the lower surface side of the plate member 130 of the second portion 12 . As a result, the casters 93 are positioned between the first portion 11 and the second portion 12, as shown in FIG. Specifically, the casters 93 are arranged in the central portion of the truck 10 .

According to the configuration of the truck 10, the casters 93 arranged in the central portion of the truck 10 restrict the rotation of the running wheels 93A about their axes along the vertical direction. On the other hand, four casters (casters 91 and 92) arranged at the four corners of the carriage 10 support running wheels 91A and 92A rotatably around axes along the vertical direction.

As a result, the carriage 10 can be rotated around the vertical axis with the running wheels 93A of the casters 93 as fulcrums. Therefore, when transporting a load, the cart 10 can turn in a small radius. Therefore, the direction of the carriage 10 can be changed even in a relatively narrow space such as a loading platform of a truck or the like.

Further, according to the configuration of the truck 10, the integrated first portion 11 and second portion 12 are divided as follows. That is, after loosening each bolt 26 and each bolt 46 , each insertion member 23 is extracted from each insertion space 125 and each insertion member 43 is extracted from insertion space 45 . Further, the fixing plate 135 is pulled out from the inserted portion 150 . In this manner, the coupling portion 20 of the first portion 11 and the coupling portion 20 of the second portion 12 are separated. Thereby, the first portion 11 and the second portion 12 are divided. Specifically, the plate member 130 of the first portion 11 and the plate member 130 of the second portion 12 are separated. Thereby, for example, the trolley 10 can be stored compactly.

Here, in the configuration of the carriage 10 according to another embodiment, the coupling portion 20 (the insertion members 23 and 43 and the members to be inserted 124 and 44) of the first portion 11 and the second portion 12 is used to load the load. It is provided on the lower surface of the plate member 130 on the side opposite to the upper surface of the plate member 130 . Therefore, the connecting portion 20 of the first portion 11 and the second portion 12 is less likely to interfere with the load when the load is loaded, and is less likely to be an obstacle.

Further, according to the configuration of the carriage 10 according to another embodiment, each insertion member 23 inserted into each insertion space 125 and each insertion member 43 inserted into each insertion space 45 are plate members. Because it contacts the lower surface of 130, the coupling function is enhanced. Furthermore, by screwing each bolt 26 and each bolt 46 , each insertion member 23 and each insertion member 43 are pressed against the lower surface of each plate member 130 with the tip of the bolt. Thereby, the first portion 11 and the second portion 12 are firmly integrated.

Further, according to the configuration of the carriage 10 according to another embodiment, in the state in which the first portion 11 and the second portion 12 are integrated, the fixing plate 135 is inserted into the inserted portion 150 as described above. Since the caster 93 is held by , the caster 93 is positioned at an appropriate position. In addition, by inserting the fixing plate 135 into the inserted portion 150, the first portion 11 and the second portion 12 are firmly integrated.

Further, according to the configuration of the truck 10 according to another embodiment, the first portion 11 and the second portion 12 have a layered structure in which the upper layer plate 132, which is lighter than the lower layer plate 140, is laminated on the upper surface of the lower layer plate 140. It is said that

Therefore, the lower plate 140 and the upper plate 132 can be made of different materials. Specifically, as described above, for example, the lower plate 140 is made of a metal plate having higher rigidity than the upper plate 132, and the upper plate 132, which is lighter than the lower plate 140, is made of resin or corrugated board. can do. As a result, the weight of the plate member 130 can be reduced while ensuring the rigidity of the portions of the plate member 130 to which the casters 91 and 92 are attached.

The present invention is not limited to the above-described embodiments, and various modifications, changes, and improvements are possible without departing from the scope of the invention. For example, the modifications shown above may be configured by appropriately combining a plurality of them.

10 Carriage 11 First part 12 Second part 19 Pallet 20 Connecting parts 23, 43 Insertion members 24, 44 Inserted members 26, 46 Bolt 30 Plate members 31, 32, 33, 34 Plate material 50 Reinforcing parts 51, 52, 53 , 54 reinforcing plate 90 holding portions 91, 92, 93 casters 94, 96 holding member 130 plate member 132 upper layer plate 140 lower layer plate

Claims (5)

a first plate member on which a load is loaded;
a first caster attached to the lower surface side of the first plate member;
a second plate member on which the load is loaded;
a second caster attached to the lower surface side of the second plate member;
a first coupling portion provided on the lower surface of the first plate member;
a second joint portion provided on the lower surface of the second plate member and detachably joined to the first joint portion to integrate the first plate member and the second plate member;
with
The first coupling portion is
an insertion portion protruding horizontally from the first plate member,
The second joint portion is
an insertion receiving portion into which the insertion portion is inserted and which makes the insertion portion contact the lower surface of the second plate member;
a pressing portion that presses the insertion portion inserted into the insertion receiving portion against the lower surface of the second plate member;
have
trolley. a first plate member on which a load is loaded;
a first caster attached to the lower surface side of the first plate member;
a second plate member on which the load is loaded;
a second caster attached to the lower surface side of the second plate member;
a first coupling portion provided on the lower surface of the first plate member;
a second joint portion provided on the lower surface of the second plate member and detachably joined to the first joint portion to integrate the first plate member and the second plate member;
Cantilevered on the lower surface side of the first plate member, and partly arranged on the lower surface side of the second plate member in a state in which the first plate member and the second plate member are integrated a third caster;
A trolley with a a holding part provided in the second plate member and holding the third caster in a state in which the first plate member and the second plate member are integrated;
A truck according to claim 2. each of the first plate member and the second plate member is formed in a frame shape in plan view,
A first plate member forming one side of the frame-shaped first plate member and a second plate member forming one side of the frame-shaped second plate member are opposed to each other, and the first joint portion is connected to the second joint portion. to integrate the first plate member and the second plate member
A truck according to any one of claims 1 to 3. The first plate member is
a first lower layer plate to which the first caster is attached;
a first upper layer plate that is laminated on the upper surface of the first lower layer plate and that is lighter than the first lower layer plate;
with
The second plate member is
a second lower layer plate to which the second caster is attached;
a second upper layer plate laminated on the upper surface of the second lower layer plate and lighter than the second lower layer plate;
have
A truck according to any one of claims 1 to 3.

Images