JP2020157841A - Conveyance carriage - Google Patents

Abstract

To provide a conveyance carriage configured such that a support column member is inserted to be thereby disposed in a standing manner and such that the support column member is extracted from a support column holding portion and can be stored in an inclined manner and enabling conveyance operation to be stably and effectively performed by the support column member.SOLUTION: A conveyance carriage 100 includes a load receiving table 10, support column members 20, and support column holding portion 12 allowing the support column members 20 to be disposed in a standing manner. An elongated hole is formed to extend in a longitudinal direction of each of the support column members 20, and a protrusion movable along the elongated hole are formed in each of the support colum holding portions 12. Thus, the support column member 20 can be disposed in a standing manner or can be tilted. The conveyance carriage includes: an engagement portion configured by a first hole formed in the support column member 20 in a state where the support column member is disposed in a standing manner and a second hole formed in the support column holding portion 12; and a lock member configured to be engaged with the engagement portion and locked at a position set in a vertical direction in which the support column member 20 is set to the support column holding portion.SELECTED DRAWING: Figure 1

Description

The present invention relates to a carrier provided with a loading platform for loading luggage and a support column member erected on the loading platform.

As is well known, various transport carts are used to transport luggage at construction sites and the like.
In such a transport trolley, it is common that a support vehicle is erected at a corner of a load receiving table or the like as a handle for operation, and the work vehicle holds the support member for transportation work.

In addition, it is desirable to reduce the storage space of the transport trolley by stacking and storing the transport trolleys on which the support trolleys are erected when not in use. Since the superposition is a trace, for example, the erected support column member is removed from the loading platform.

On the other hand, when the support column member erected from the loading platform is removed, the support column member needs to be stored separately. Therefore, for example, the support column member is inserted into the support column holding portion arranged at the corner of the load receiving table. A transport trolley is widely used in which a support trolley is erected and tilted by being pulled out from a support support portion and is arranged around a load receiving table (for example, on the side or upper surface of the load receiving table) to accommodate the support members.

Further, there is disclosed a transport trolley configured to expand the loading area by configuring the upper surface of the support member and the upper surface of the loading platform to be flush with each other when the support member is stored (for example,). See Patent Document 1).

Japanese Patent No. 4373302

However, when the transport work is carried out using the transport cart disclosed in Patent Document 1, if the strut member erected on the strut holding portion is caught in the middle of the strut holding portion, it is caught during the transport work. The strut member falls downward, which hinders stable transportation work.

On the other hand, if the caster is caught in a step or recess generated in the transport path, it is difficult to pull up the support column member and pull out the caster from the recess or the like. Therefore, for example, the entire transport trolley is lifted by a forklift or the like. It is necessary to pull out the casters from the recesses and the like.

Therefore, by inserting the strut member, the strut member can be erected near the loading platform, and by pulling it out from the strut holding portion, the strut member can be tilted and stored, and the strut member can be stably and efficiently stored. A transport trolley capable of transporting work is desired.

The present invention has been made in consideration of such circumstances. By inserting the support column member, the support column member is erected in the vicinity of the loading platform, and by pulling out from the support column holding portion, the support column member is tilted. It is an object of the present invention to provide a transport trolley that can be stored and can be stably and efficiently transported by a support column member.

In order to solve the above problems, the present invention proposes the following means.
The invention according to claim 1 is a load receiving table for loading a load, a support column member erected on the load receiving table, and a support column holding portion provided on the load receiving table and having the support column member inserted and erected. A plurality of casters arranged at the lower part of the load receiving table, and one of the support column member and the support column holding portion is provided along the insertion direction when the support column member is inserted into the support column holding portion. An elongated hole is formed, and the other end of the column member and the column holding portion is a first end of the elongated hole in the longitudinal direction and a second end located opposite to the first end of the elongated hole in the longitudinal direction. A protrusion that engages with the slot and moves along the slot is formed between the holes, and the support member is above the support holding portion when the protrusion is located at the first end. A transport trolley that is pulled out and can be tilted by rotating around the protruding portion, and is erected after the insertion of the support column holding portion is completed when the protruding portion is located at the second end. The support member is provided with a locking member that holds the support member and the support portion at a set relative position in the longitudinal direction of the elongated hole when the support member is inserted into the support portion. A first hole portion is formed in the support column member, and a second hole portion corresponding to the first hole portion is formed in the support column holding portion, and the first hole portion and the second hole portion are formed. Is configured so that the strut member is inserted into the strut holding portion and overlaps with each other to form an engaging portion, and the locking member engages with the engaging portion to form the strut member. And the support column holding portion are held at a set relative position in the longitudinal direction of the elongated hole.

According to the transport trolley according to the present invention, an elongated hole is formed in either one of the support member and the support support portion along the insertion direction when the support member is inserted into the support support portion, and the first of the long holes is formed in the other. A protrusion is formed between the end and the second end that engages with the slot and moves along the slot, causing the strut member to move upward from the strut holder when the protrusion is located at the first end. Since it can be pulled out and rotated around the protrusion so that it can be tilted, and when the protrusion is positioned at the second end, the support column holding portion is completely inserted and erected. Efficient transportation work can be performed by erecting the members, and by tilting and storing the support members when not in use, the transportation trolleys can be stably stacked and the storage space can be reduced.

Further, according to the transport trolley according to the present invention, when the strut member is inserted into the strut holding portion, the locking member holds the strut member and the strut holding portion at a set relative position in the longitudinal direction of the elongated hole. A first hole is formed in the strut member, a second hole corresponding to the first hole is formed in the strut holding portion, and the strut member holds the strut in the first hole and the second hole. In the state of being inserted into the portion, they overlap each other to form an engaging portion, and the locking member engages with the engaging portion to form a strut member and a strut holding portion at a set relative position in the longitudinal direction of the elongated hole. Is held, for example, even if the strut member is pulled upward, it is possible to prevent the strut member from being inadvertently removed from the strut holding portion.

Further, according to the transport trolley according to the present invention, it can be confirmed that the support column member is held by the insertion end of the support column holding portion by engaging the locking member with the engaging portion. Can be prevented from being inserted halfway into the support column holding portion and being erected halfway at an intermediate position.
As a result, the support work can be carried out stably and efficiently.

Here, the first hole portion and the second hole portion are holes formed in the strut member and the strut holding portion, and are holes formed in the strut member and the strut holding portion in order to form the engaging portion. It may be a part of an elongated hole.

The invention according to claim 2 is the transport trolley according to claim 1, wherein the locking member is a pin member inserted into the engaging portion.

According to the transport trolley according to the present invention, since the locking member is a pin member inserted into the engaging portion, the structure is simple, and the locking member can be easily and efficiently engaged with the engaging portion. Can be done.

The invention according to claim 3 is the carrier according to claim 1, wherein the locking member is a plunger member including a locking portion for locking the first hole portion and the second hole portion. It is characterized by being.

According to the transport trolley according to the present invention, since the locking member is a plunger member provided with a locking portion for locking the first hole portion and the second hole portion, the locking portion can be easily locked without human intervention. And it can be efficiently engaged with the engaging portion.

Here, the plunger member is a member in which the engaging portion advances and retreats due to an urging member such as a spring or a drive source such as air.

The invention according to claim 4 is the transport trolley according to any one of claims 1 to 3, wherein the locking member has an engagement maintenance portion that maintains engagement with the engagement portion. It is characterized by having.

According to the transport trolley according to the present invention, since the locking member includes an engagement maintaining portion for maintaining engagement with the engaging portion, the engaging member and the engaging portion are inadvertently engaged with each other. It can be suppressed from being released.
As a result, the work by the transport trolley can be performed stably.

The invention according to claim 5 is the transport carriage according to any one of claims 1 to 4, wherein the first hole portion is composed of a lower end portion of an elongated hole formed in the support column member. Alternatively, the second hole portion is composed of an upper end portion of an elongated hole formed in the support column holding portion.

According to the transport trolley according to the present invention, when a long hole is formed in the support column member, the first hole portion is composed of the lower end portion of the long hole formed in the support column member, or the support column holding portion has a long hole. When the strut member is formed, the second hole portion is composed of the upper end portion of the elongated hole formed in the strut holding portion. Therefore, when the strut member is erected, the upper end portion and the lower end portion of the elongated hole are used. The vertical movement of the strut members is reliably regulated.
Further, it is not necessary to newly form the first hole and the second hole in the support column member and the support column holding portion, and the cost of the transport carriage can be reduced.

The invention according to claim 6 is the transport trolley according to any one of claims 1 to 5, wherein when the support column member is tilted, the free end side of the support column member is supported. It is characterized by including a tilting position setting unit for setting a tilting stop position of the support column member.

According to the transport trolley according to the present invention, when the support column member is tilted, it is tilted because it is provided with a tilt position setting unit that supports the free end side of the support column member and sets the tilt stop position of the support column member. By supporting the support column member on the free end side, the tilted support column member can be arranged in a set posture.

The invention according to claim 7 is the transport trolley according to claim 6, wherein the upper side surface of the support column member is supported by the tilting position setting portion and is larger than the upper surface of the load receiving surface of the load receiving table. It is characterized in that it is located at a lower position and its lower side surface is located at the same position as or higher than the lower surface of the loading platform.

According to the transport trolley according to the present invention, when the free end side of the support column member is supported by the tilting position setting portion, the upper side surface of the support column member is positioned at a position lower than the load receiving surface of the load receiving table. When a load is loaded on the support member, the load of the load can be prevented from being applied to the support member and the support member is damaged.
Further, since the lower side surface of the support column member is located at the same position as the lower surface of the load receiving table or at a position higher than the lower surface, for example, even if the fork of the forklift is inserted into the lower side of the load receiving table and the transport vehicle is lifted, the transport vehicle The force for lifting the fork is not applied to the kendo support member, and damage to the support member can be suppressed.

The invention according to claim 8 is the transport trolley according to any one of claims 1 to 7, and another transport trolley (for example, a transport trolley of the same type) is placed up and down on the consignment pedestal. It is characterized in that a caster accommodating portion for accommodating the casters of the transport trolley arranged on the upper side is formed when they are overlapped in the direction.

According to the transport trolley according to the present invention, since the caster accommodating portion is formed on the cradle, another transport trolley can be stably superposed and loaded on the upper side of the cradle.
Further, by stacking a plurality of transport trolleys, the space for storing the transport trolleys can be reduced.
Here, the caster accommodating portion is a portion formed on the load receiving platform for accommodating the casters of another transport carriage, and may have various forms such as a recess, a guide member, and a through hole.
In addition to the same type of transport trolley, other transport trolleys may be of the same type as the casters in the front-rear direction, width, caster size, etc., and if they can be stacked and loaded, they are manufactured by other manufacturers. It may be a transport trolley.

According to the transport trolley according to the present invention, the strut member can be erected or tilted with respect to the loading platform to be accommodated, and the strut member is prevented from being accidentally pulled out, so that the transport work can be performed. It can be done stably.

It is a figure explaining the schematic structure of the transport carriage which concerns on 1st Embodiment of this invention, and is the perspective view which shows the state which the support column member was erected. It is a figure explaining the schematic structure of the transport trolley which concerns on 1st Embodiment, and is the perspective view which shows the state which the column member was tilted. It is a figure seen from the side which explains the schematic structure of the transport trolley which concerns on 1st Embodiment. It is a figure seen from the front explaining the schematic structure of the transport carriage which concerns on 1st Embodiment. It is a schematic configuration diagram explaining the schematic configuration of the transport trolley according to the first embodiment, (A) is a plan view of the transport trolley, and (B) is seen from the side surface shown by arrow VB-VB in (A). It is a conceptual diagram. It is a figure explaining the schematic structure of the support column member and the support column holding part of the transport carriage which concerns on 1st Embodiment, (A) is the figure which looked at the state which the support column member was erected from the side, (B) is the figure which saw. It is a vertical cross-sectional view seen from the front shown by arrow view VIB-VIB in (A). It is a conceptual diagram explaining the schematic structure of the insertion pin (locking member) which concerns on 1st Embodiment. It is a conceptual diagram explaining the outline of the operation of the support column member in the transport trolley according to the first embodiment, (A) is a state in which the support column member is tilted in the horizontal direction, and (B) is a state in which the support column member is erected. It is a figure which shows the state (C) is the state which accommodates the support column member in the support column holding part, and (D) is the state which the insertion pin (locking member) is engaged with the engaging part. It is a perspective view explaining the outline of the state in which the transport carriages according to the first embodiment are stacked and loaded. It is a figure seen from the front explaining the schematic structure of the transport trolley which concerns on 1st modification of 1st Embodiment. It is a figure seen from the front explaining the schematic structure of the transport trolley which concerns on the 2nd modification of 1st Embodiment. It is a vertical cross-sectional view explaining the schematic structure of the support column member and the support column holding portion of the transport carriage according to the second embodiment of the present invention. It is a top view explaining the schematic structure of the transport trolley which concerns on 3rd Embodiment of this invention.

<First Embodiment>
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 9.
1 and 2 are views for explaining a schematic configuration of a transport trolley according to a first embodiment of the present invention, FIG. 1 is a perspective view showing a state in which a support column member is erected, and FIG. 2 is a perspective view. , Is a perspective view showing a state in which a support column member is tilted. Further, FIGS. 3 and 4 show a side view and a front view for explaining the schematic configuration of the transport carriage. Further, FIG. 5 is a schematic configuration diagram for explaining a schematic configuration of the transport trolley, FIG. 5 (A) is a plan view of the transport trolley, and FIG. 5 (B) is an arrow VB- in FIG. 5 (A). It is a conceptual diagram seen from the side shown by VB. Further, FIG. 6 is a view for explaining the schematic configuration of the support column member and the support column holding portion, and FIG. 6 (A) is a side view of the state in which the support column member is erected, and FIG. 6 (B) is a view. 6 (A) is a vertical cross-sectional view seen from the front shown by arrow-view VIB-VIB in FIG. Further, FIG. 7 is a conceptual diagram illustrating a schematic configuration of an insertion pin (locking member).

In the figure, reference numeral 100 indicates a transport trolley, reference numeral 10 indicates a loading platform, reference numeral 12 indicates a support column holding portion, and reference numeral 20 indicates a support column member. Further, reference numeral 10A is a load receiving surface (upper surface), reference numeral 10B is a lower surface of a load receiving table, reference numeral 10U is a caster accommodating portion, reference numeral 13 is a support member locking bolt (protruding part), and reference numeral 14 is a support support hole. (Second hole), reference numeral 15 indicates an insertion pin (locking member), and reference numeral 17 indicates a caster. Further, reference numeral 22 indicates an elongated hole, reference numeral 22A indicates a lower end portion (first end, first hole portion) of the elongated hole, and reference numeral 22B indicates an upper end portion (second end).

As shown in FIGS. 1 to 5, for example, the transport trolley 100 includes a load receiving platform 10, a support column holding portion 12, an insertion pin (locking member) 15, casters 17, and a support member tilting stopper (tilting position setting). (Part) 18 and a support member 20 are provided.

Further, as shown in FIGS. 1 to 5, the transport trolley 100 includes, for example, a load receiving platform 10, a support column holding portion 12, and an insertion pin (a support column is provided by inserting the locking support column member 20 into the support column holding portion 12). The member 20 can be erected, and the strut member 20 can be tilted by being pulled out from the strut holding portion 12.
Then, the loaded load can be carried by the casters 17 by using the erected support column member 20 as a handrail.

In this embodiment, as shown in FIGS. 1 to 3, for example, three pairs of casters 17 (six in total) are located symmetrically on the front side F, the center part, and the lower surface 10B of the rear side R of the loading platform 10. ) Have been placed.
The caster 17 includes, for example, a free wheel caster 171 and a fixed wheel caster 172.

The free wheel caster 171 (17) includes, for example, a wheel portion 17A and a wheel support portion 17B.
The wheel support portion 17B is configured to rotatably support the wheel portion 17A and to rotatably rotate the wheel portion 17A around a rotation shaft (not shown) formed in the vertical direction.
Further, the free wheel casters 171 (17) are arranged on the front side F and the rear side R of the load receiving table 10.

The fixed wheel caster 172 includes, for example, a wheel portion 17A and a wheel support portion 17C.
The wheel support portion 17C is configured to rotatably support the wheel portion 17A and movably hold the wheel portion 17A only in a certain direction (forward, backward).
Further, the fixed wheel casters 172 (17) are arranged at the center of the load receiving table 10 with the wheel portions 17A facing the traveling direction.

As the free wheel caster 171 and the fixed wheel caster 172, well-known ones can be applied.
Further, the arrangement of the free wheel casters 171 and the fixed wheel casters 172 on the loading platform 10 can be arbitrarily set.

The load receiving table 10 has, for example, a thickness (vertical dimension) of 60 mm, a front-rear direction of 1000 mm, and a width direction dimension of 600 mm, and is formed in a rectangular shape in a plan view.
Further, the load receiving table 10 is formed with a load receiving surface (upper surface of the receiving table) 10A and a lower surface 10B for loading the load.

Further, as shown in FIG. 4, in the transport carriage 100, for example, when the support column member 20 is tilted down, the upper side surface 20A of the support column member 20 is arranged at a position lower than the load receiving surface (load receiving table upper surface) 10A. The lower side surface 20B of the support column member 20 is arranged at a position higher than the load receiving platform lower surface 10B.

Specifically, for example, a square member made of an aluminum alloy (for example, 60 mm × 60 mm) is used to form a surrounding frame member, and an aluminum alloy plate forming a load receiving surface (upper surface) 10A is joined on the frame member by welding. An aluminum alloy plate forming the lower surface 10B of the loading platform 10 is joined to the lower side of the frame member by welding.
Further, the lower surface 10B of the load receiving table 10 is, for example, a surface located below the frame member.

Further, in this embodiment, for example, a caster accommodating portion 10U and a caster accommodating portion 10V are formed on the load receiving table 10.
The caster accommodating portion 10U is formed in, for example, a depth in which a hole formed in an aluminum alloy plate forming the load receiving surface (upper surface) 10A and opening in a quadrangular shape in a plan view reaches the aluminum alloy plate forming the lower surface 10B of the receiving table 10. It is composed of recesses (spaces) formed up to aluminum (dimensions).
Further, the length and width of the caster accommodating portion 10U in the front-rear direction are formed so that the casters 171 (17) can be accommodated even if they are not facing the front-rear direction.

In this embodiment, the caster accommodating portion 10V has, for example, a recess opened in the load receiving surface (upper surface) 10A to form the caster accommodating portion 10U, and the recess, as shown in FIGS. 5 (A) and 5 (B). It is provided with a caster guide member 10G arranged inward of the.
The caster guide member 10G includes, for example, a guide member main body 10C and a guide recess 10D formed in the guide member main body 10C so as to be able to store the casters 171 (17).
The fixed wheel caster 172 (17) can be accommodated in the guide recess 10D of the caster guide member 10G.

The configuration of the caster accommodating portions 10U and 10V can be arbitrarily set, and the length, width, depth, diameter of the casters, etc. that can accommodate the casters 171 and 172 (17) can be adjusted. For example, it may be configured by any of a recess, a recess with a guide member, a through hole, and the like.

The support member tilt stopper (tilt position setting portion) 18 is made of, for example, a metal piece, and is arranged so as to project outward in the width direction of the load receiving table 10.
Then, the support member tilt stopper (tilt position setting unit) 18 supports the free end 20F side of the tilted strut member 20 and sets the posture of the strut member 20, the height of the upper side surface 20A and the lower side surface 20B. It is configured as follows.

The support column holding portion 12 is made of, for example, a square timber made of an aluminum alloy and has an insertion hole 12H formed inward, so that the insertion hole 12H is along the vertical direction, the front side F and the rear side R of the load receiving base 10. It is placed on the side of.

Further, in the strut holding portion 12, a recess 12C is formed on the side where the strut member 20 formed in the strut holding portion 12 is tilted and tilted (center side in the previous direction of the load receiving table 10), and the strut member 20 is formed. Allows to be tilted.

Further, as shown in FIG. 6, in the lower part of the support column holding portion 12, for example, support column locking holes (second holes) 14 are provided on both of the wall portions facing each other in the square timber located on the side surface side of the load receiving table 10. It is formed.
Further, on the upper part of the support column holding portion 12, for example, a support column member locking bolt (projection portion) 13 is arranged so as to straddle the insertion hole 12H on the facing wall portion located on the side surface side of the load receiving base 10 in the square lumber. ing.

The protruding portion is not limited to the support column member locking bolt (protruding portion) 13, and can be formed of, for example, a well-known bolt and nut or another pin member.

As shown in FIG. 6, the strut member 20 is made of, for example, an aluminum alloy square timber, and can be inserted into the insertion hole 12H of the strut holding portion 12.
Then, the strut member 20 is inserted into the insertion hole 12H of the strut holding portion 12 so as to stand upright with respect to the load receiving table 10.

Further, as shown in FIG. 6, in the support column member 20, for example, elongated holes 22 are formed along the longitudinal direction on both of the facing wall portions located on the side surface side of the loading platform 10 of the square lumber.
As shown in FIG. 6, the elongated hole 22 has an upper end portion (second hole portion) 22B on the free end 20F side of the strut member and a lower end side (first hole) 22A on the strut holding portion 12 side.

Then, the strut member locking pin 13 is inserted into the strut member 20 so as to straddle between the facing wall portions, and the lower end side (first hole) 22A and the upper end portion (second hole portion) 22B of the elongated hole 22 are inserted. It is configured to move in the vertical direction while being guided by the elongated hole 22 along the insertion hole 12H of the support column member 12.

When the strut member locking pin 13 comes into contact with the lower end side (first end portion) 22A, the strut member 20 can be tilted with the strut member locking pin 13 as a fulcrum.
Further, when the strut member locking pin 13 comes into contact with the upper end side (second end portion) 22B, the strut member 20 is configured to complete the insertion into the strut holding portion 12.

Further, in a state where the support column member 20 is erected after being inserted into the support column holding portion 12, the lower end side (first end portion, first hole portion) 22A of the elongated hole 22 and the support column locking hole (second). The hole) 14 is configured to overlap with each other to form an engaging portion.

Further, an insertion pin (locking member) is provided in the engaging portion formed by overlapping the lower end side (first end portion, first hole portion) 22A of the elongated hole 22 and the support column locking hole (second hole) 14. ) 15 can be inserted.
Then, as shown in FIG. 6, the support column holding portion 12 and the support column member 20 are locked by inserting the insertion pin (locking member) 15 into the engaging portion.

Next, a schematic configuration of the insertion pin (locking member) will be described with reference to FIG. 7.
FIG. 7 is a conceptual diagram illustrating a schematic configuration of an insertion pin (locking member) according to the first embodiment. In the figure, reference numeral 15 is an insertion pin (locking member), reference numeral 15A is an insertion pin body, reference numeral 15A is an insertion pin body, reference numeral 15B is a bent portion (engagement maintenance portion), and reference numeral 15C is rotation. Shows the axis.

As shown in FIG. 7, the insertion pin (locking member) 15 includes, for example, an insertion pin main body 15A, a bent portion (engagement maintaining portion) 15B, and a rotating shaft 15C.

The insertion pin body 15A is a shaft member having a bent portion formed on one end side.
The bent portion (engagement maintaining portion) 15B is formed of a shaft member, and is pivotally supported on the other end side of the insertion pin main body 15A via a rotating shaft 15C.

Then, as shown in FIG. 7, the insertion pin (locking member) 15 has a bent portion (engagement maintenance portion) 15B around the rotation shaft 15C with respect to the insertion pin main body 15A as shown by an arrow. It is rotatable.

Next, the outline of the operation of the strut member will be described with reference to FIG.
8A and 8B are conceptual diagrams for explaining the outline of the operation of the support member. FIG. 8A shows a state in which the support member is tilted in the horizontal direction, and FIG. 8B shows a state in which the support member is erected. 8 (C) shows a state in which the support column member is housed in the support column holding portion, and FIG. 8 (D) shows a state in which the insertion pin (locking member) is engaged with the engaging portion. The cross sections shown in FIGS. 8 (A) to 8 (D) are the same as those in FIG. 7.

(1) First, as shown in FIG. 8A, the tilted support column member 20 is raised as shown by an arrow.

(2) Next, as shown in FIG. 8B, the support column member 20 is arranged in the direction in which the insertion hole 12H is formed.

(3) Next, as shown in FIG. 8C, the support column member 20 is inserted into the insertion hole 12H along the arrow.

(4) Then, as shown in FIG. 8 (D), the strut member 20 is inserted into the insertion hole 12H until the upper end portion (second end) 22B of the elongated hole 22 abuts on the strut member locking bolt (protruding portion) 13. The upper end portion 22B of the elongated hole 22 is supported by the support column member locking bolt 13.
As a result, the strut member 20 is inserted to the descending end, and the lower end portions (first end, first hole portion) 22A of the elongated hole 22 and the strut locking hole (second hole) 14 of the strut holding portion 12 overlap each other. It constitutes an engaging part.

(5) Then, in the engaging portion formed by overlapping the lower end portions (first end, first hole portion) 22A of the elongated hole 22 and the column locking hole (second hole) 14 of the column holding portion 12. The insertion pin (locking member) 15 is inserted to lock the support column member 20 with respect to the support column holding portion 12.

(6) Further, the bent portion (engagement maintaining portion) 15B of the insertion pin (locking member) 15 is bent with respect to the insertion pin main body 15A, and the insertion pin (locking member) 15 comes off from the engaging portion. Try not to.

Next, the operation of the caster accommodating portion will be described with reference to FIG.
FIG. 9 is a perspective view illustrating an outline of a state in which the transport carts according to the first embodiment are stacked and loaded.

As shown in FIG. 9, the transport trolley 100 is provided with the caster accommodating portion 10U and the caster accommodating portion 10V of the transport trolley 10 located on the lower side by tilting and tilting the support column member 20. By accommodating the free wheel casters 171 and the fixed wheel casters 172 of the transport trolley 100 (for example, of the same type), it is possible to stack and store a plurality of transport trolleys 100.

At this time, the fixed wheel caster 172 located at the center of the transport trolley 100 is accommodated within a predetermined range in the front-rear direction and the width direction by the guide recess 10D of the caster accommodating portion 10V, so that the transport trolley 100 is stabilized. Can be loaded.

Further, since the caster accommodating portion 10U is formed to have a size larger than that of the free wheel caster 171. It is suppressed and the free wheel caster 171 can be easily and efficiently accommodated.

In this way, the transport trolley 100 in which the support column member 20 is in a tilted state can be stacked in the vertical direction to load another transport trolley 100.
As a result, when a plurality of unused transport trolleys 100 are generated, the storage space of the transport trolley 100 can be reduced by loading the transport trolley 100.

According to the transport trolley 100 according to the first embodiment, the support column member 20 is configured to be erected and tiltable, and the support column member 20 is locked to the support column holding portion 12, so that the support column member 20 is configured. For example, when the caster 17 is caught in a recess on the road surface, the support column member 20 can be pulled up to easily and efficiently pull out the caster 17 from the recess.
Further, since the strut member 20 does not unexpectedly descend into the strut holding portion 12, the transport work can be performed stably.
As a result, the transport trolley can be stably moved when the support column member is held in the hand and operated.

Further, according to the transport trolley 100, since the insertion pin (locking member) 15 is provided, the insertion pin (locking member) 15 can be easily and efficiently engaged with the engaging portion by a simple structure. The strut member 20 can be locked to the strut holding portion 12.

Further, according to the transport trolley 100, since the insertion pin (locking member) 15 includes a bent portion (engagement maintaining portion) 15B, the insertion pin (locking member) inserted into the engaging portion. It is possible to prevent the 15 from coming off and the locked state from being released.
As a result, the work by the transport trolley 100 can be performed stably and safely.

Further, according to the transport trolley 100, since the support member tilt stopper (tilt position setting portion) 18 for setting the tilt side stop position of the support column member 20 is provided, the free end 20F side of the tilted support column member 20 is supported. Then, the upper side surface 20A and the lower side surface 20B of the support column member 20 can be positioned at predetermined heights.

Further, according to the transport trolley 100, the upper side surface 20A of the support member 20 is the load receiving surface 10A of the load receiving table 10 in a state where the free end 20F side of the support member 20 is supported by the support member tilt stopper (tilt position setting portion) 18. Since it is located below the position, it is possible to prevent the support column member 20 from being damaged due to the load being applied to the support column member 20 when the load is loaded on the load receiving table 10.

Further, according to the transport carriage 100, the lower side surface 20B of the support column member 20 is located above the lower surface 10B of the load receiving table 10. Therefore, for example, even if the fork of the forklift is inserted below the load receiving table 10, the support column member It is possible to prevent the support column member 20 from being damaged by applying a lifting load to the 20.

<First embodiment (first modification)>
Hereinafter, the transport trolley according to the first modification of the first embodiment will be described with reference to FIG.
FIG. 10 is a front view for explaining the schematic configuration of the transport trolley according to the first modification of the first embodiment.
In FIG. 10, reference numeral 100A is a transport trolley, reference numeral 12 is a support column holding portion, reference numeral 20 is a support column member, reference numeral 20A is an upper side surface in a state where the support column member is tilted, and reference numeral 20B is a state in which the support column member is tilted. The lower side is shown.

As shown in FIG. 10, the transport carriage 100A includes, for example, a load receiving platform 10, a support column holding portion 12, casters (not shown), and a support column member 20.
The transport trolley 100A includes, for example, the bottom of a recess (see 12C shown in FIG. 6A) formed on the side where the support member 20 formed in the support column holding portion 12 is tilted and tilted, and the support column member locking bolt ( The protruding portion) 13 is arranged at a position lower than that of the first embodiment.
Others are the same as those in the first embodiment, so the same reference numerals are given and the description thereof will be omitted.

As a result, when the support column member 20 is tilted down, for example, the upper side surface 20A of the support column member 20 is arranged lower than the load receiving surface (load receiving table upper surface) 10A, and the lower side surface 20B of the support column member 20 is placed on the load receiving table lower surface 10B. It is configured to be arranged flush with each other.

<First embodiment (second modification)>
Hereinafter, the transport trolley according to the second modification of the first embodiment will be described with reference to FIG.
FIG. 11 is a front view for explaining the schematic configuration of the transport trolley according to the second modification of the first embodiment.
In FIG. 11, reference numeral 100B is a transport trolley, reference numeral 12 is a support column holding portion, reference numeral 20 is a support column member, reference numeral 20A is an upper side surface in a state where the support column member is tilted, and reference numeral 20B is a state in which the support column member is tilted. The lower side is shown.

As shown in FIG. 11, the transport carriage 100B includes, for example, a load receiving platform 10, a support column holding portion 12, casters (not shown), and a support column member 20.
The transport trolley 100B includes, for example, the bottom of a recess (see 12C shown in FIG. 6A) formed on the side where the support member 20 formed in the support column holding portion 12 is tilted and tilted, and the support column member locking bolt ( The protruding portion) 13 is arranged at a higher position than that of the first embodiment.
Others are the same as those in the first embodiment, so the same reference numerals are given and the description thereof will be omitted.

As a result, when the support column member 20 is tilted down, for example, the upper side surface 20A of the support column member 20 is arranged flush with the load receiving surface (load receiving table upper surface) 10A, and the lower side surface 20B of the support column member 20 is the lower surface of the load receiving table. It is configured to be placed at a position higher than 10B.

<Second Embodiment>
Hereinafter, a second embodiment of the present invention will be described with reference to FIG.
FIG. 12 is a vertical cross-sectional view illustrating a schematic configuration of a support column holding portion of a transport carriage according to a second embodiment of the present invention.
In FIG. 12, reference numeral 200 is a carrier, reference numeral 212 is a support column holding portion, reference numeral 220 is a support column member, reference numeral 212H is an elongated hole, reference numeral 212A is an upper end portion (first end) of the elongated hole, and reference numeral 212B. Is the lower end (second end) of the elongated hole, reference numeral 224 is a support column locking hole (first hole), reference numeral 213 is a support column member locking pin (protruding portion), and reference numeral 214 is a support column locking hole (number 2). The second hole), reference numeral 30 indicates a plunger member (locking member), and reference numeral 32 indicates a locking pin (locking portion).

As shown in FIG. 12, the transport trolley 200 includes, for example, a loading platform (not shown), a support column holding portion 212, a plunger member (locking member) 30, casters (not shown), and a support column member 220. I have.
The transport trolley 200 is configured to include a support column holding portion 212 and a support column member 220 in place of the support column holding portion 212 and the support column member 20 in the first embodiment.

In the support column holding portion 212, an elongated hole 212H is formed in the facing wall portion located on the side surface side of the load receiving table (not shown) along the vertical direction.
The elongated hole 212H is formed with an upper end portion (first end) 212A and a lower end portion (second end) 212B.
Further, a support column locking hole (second hole) 214 is formed above the elongated hole 212H of the support column holding portion 212.

The strut member 220 is set to a length that can be engaged with the elongated hole 212H, straddling the facing wall portions located on the side surface side of the load receiving table (not shown), and slightly protrudes outward. A strut member locking pin (protruding portion) 213 is arranged.
The strut member locking pin (protruding portion) 213 is inserted into the elongated hole 212H, and any pin member can be applied as long as it can be engaged with the elongated hole 212H.

The strut member 220 is configured such that the strut member locking pin 213 engages with the elongated hole 212H and moves the insertion hole in the strut member 212 in the vertical direction along the elongated hole 212H.
Further, in the support column member 220, a support column locking hole (first hole) 224 is formed at a position where the support column member 220 is erected and overlaps with the support column locking hole (second hole) 214.

As shown in FIG. 12, the plunger member (locking member) 30 stores, for example, a coil spring (biasing member) 31, a locking pin (locking portion) 32, and a coil spring (biasing member) 31. It includes a casing 33.

The base end side of the locking pin (locking portion) 32 is formed to have a large diameter corresponding to the inner diameter of the casing 33 so that the casing 33 can be slidable.
The locking pin (locking portion) 32 moves forward and backward due to the urging force of the coil spring (biasing member) 31.

Further, the tip end side of the locking pin (locking portion) 32 is inserted into the strut locking hole (second hole) 214 formed in the strut holding portion 212, and the strut locked hole (first hole). It is said that it can move forward toward 224.

Then, when the strut member 220 is inserted into the strut holding portion 212, the strut locked hole (first hole) 224 formed in the strut member 220 and the locking pin (locking portion) 32 in the strut holding portion 212 are formed. Is advanced and engaged (for example, inserted) to lock the strut member 220 to the strut holding portion 212.
Others are the same as those in the first embodiment, and thus the description thereof will be omitted.

According to the transport trolley 200 according to the second embodiment, the locking member has a locking pin (locking portion) 32 that engages with the strut locked hole (first hole) 224 formed in the strut member 220. Since the plunger member 30 is provided, when the strut member 220 is inserted into the strut holding portion 212, the strut member 220 can be easily and efficiently locked to the strut holding portion 212 without human intervention. ..
The engagement between the support column member 220 and the support column holding portion 212 may be manually disengaged.

<Third Embodiment>
Hereinafter, a third embodiment of the present invention will be described with reference to FIG.
FIG. 13 is a plan view illustrating a schematic configuration of a transport trolley according to a third embodiment of the present invention.
In FIG. 13, reference numeral 300 indicates a transport carriage, reference numeral 10 indicates a loading platform, reference numeral 312 indicates a support column holding portion, reference numeral 313 indicates a support column member locking bolt (protruding portion), and reference numeral 320 indicates a support column member.

As shown in FIG. 13, the transport trolley 300 includes a load receiving platform 10, a support column holding portion 312, casters (not shown), and a support column member 320.
In the transport carriage 300, the column holding portion 312 is arranged at the end of the front side F and the end of the rear side R of the load receiving platform 10 at an intermediate position closer to the center in the width direction.
Further, the load receiving table 10 is formed with a recess (not shown) for accommodating the support column member 320 along the longitudinal direction.

The strut member 320 is inserted into the strut holding portion 312 and erected, and can be tilted by being pulled out upward from the strut holding portion 312.
Others are the same as those of the first embodiment and the second embodiment, and thus the description thereof will be omitted.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.
For example, in the above embodiment, the case where the elongated hole 22 is formed along the longitudinal direction of the support column member 20 and the support column member locking bolt (protruding portion) 13 is arranged in the support column holding portion 12 has been described. An elongated hole may be formed along the vertical direction of the support column holding portion 12, and a support column member locking bolt (protruding portion) or the like may be arranged on the support column member 20.

Further, in the above embodiment, the case where the engaging member is composed of the insertion pin (locking member) 15 and the plunger member 30 has been described, but the engagement member is not limited thereto and can be set arbitrarily.
For example, the engaging member may be a cylinder (air, hydraulic drive, etc.) driven by a drive source.

Further, in the above embodiment, the case where the insertion pin (locking member) 15 includes the bent portion (engagement maintenance portion) 15B has been described, but the engagement maintenance portion can be arbitrarily set. Therefore, the configuration may not include the bent portion (engagement maintaining portion) 15B, or may include another engaging portion.

Further, in the above embodiment, the strut member locking bolts (protruding portions) 13, 313 are formed so as to straddle the facing wall portions of the strut holding portions 12, 312, or the strut member locking pins (protruding portions) 213. Although the case where is engaged with the elongated holes 212H formed on both of the facing wall portions of the support column holding portion 212 has been described, only one of the support column holding portions 12, 312 and the strut holding portion 212 facing the wall portions is used. It may be configured to engage with.

Further, in the above embodiment, the upper side surface 20A of the support column member 20 is arranged flush with or lower than the receiving surface 10A of the receiving platform 10, and the lower side surface 20B is arranged flush with or higher than the lower surface 10B of the receiving platform 10. Although the case of arrangement has been described, the positional relationship between the upper side surface 20A of the support column member 20 and the load receiving surface 10A of the load receiving base 10 and the lower side surface 20B of the support column member 20 and the lower surface 10B of the load receiving table 10 in the high direction is arbitrary. Can be set. For example, the upper side surface 20A of the support column member 20 may be arranged at a position higher than the load receiving surface 10A of the load receiving table 10, or the lower side surface 20B may be arranged at a position lower than the lower surface 10B of the load receiving table 10.

Further, the shape, size, configuration, arrangement, etc. of the caster accommodating portion can be arbitrarily set without being limited to the caster accommodating portion 10U and the caster accommodating portion 10V, and the caster accommodating portion has a recess and a guide member. It may have a provided configuration or a through hole.

According to the transport trolley according to the present invention, the transport work can be performed stably and efficiently, so that it can be industrially used.

10 Consignment stand 10A Consignment surface (upper surface of consignment stand)
10B Underside of loading platform 10U, 10V Caster accommodating part 12, 212, 312 Strut holding part 12C Recess 12H Insertion hole 13, 313 Strut member locking bolt (protruding part)
14 Prop locking hole (second hole)
15 Insert pin (locking member)
15A Insertion pin body 15B Bent part (engagement maintenance part)
17 Caster 171 Free Wheel Caster 172 Fixed Wheel Caster 17A Wheel (Caster)
17B, 17C Wheel support (casters)
18 Support member tilt stopper (tilt position setting unit)
20 Strut member 20A Upper side surface of support (tilted state)
20B Lower side of support (tilted state)
20F Strut member free end 22 Long hole 22A Lower end of long hole (1st end, 1st hole)
22B long hole upper end (second end)
30 Plunger member (locking member)
31 Coil spring (urging member)
32 Locking pin (locking part)
212 Strut holding part 212H Long hole 212A Upper end of long hole (first end)
212B Long hole upper end (second end)
213 Strut member locking pin (protruding part)
214 Strut locking hole (second hole)
220 Strut member 224 Strut locked hole (1st hole)
100, 100A, 100B, 200, 300 transport trolley

Claims (8)

A loading platform for loading luggage and
The strut member erected on the loading platform and
A strut holding portion provided on the loading platform and for inserting and erecting the strut member,
With a plurality of casters arranged at the bottom of the cradle,
With
An elongated hole is formed in either the strut member or the strut holding portion along the insertion direction when the strut member is inserted into the strut holding portion.
On the other side of the support member and the support holding portion, the long hole is located between the first end of the long hole in the longitudinal direction and the second end located opposite to the first end of the long hole in the longitudinal direction. A protrusion is formed that engages with and moves along the slot.
When the projecting portion is positioned at the first end of the strut member, the strut member is pulled out upward from the strut holding portion so that the strut member can rotate and tilt around the projecting portion, and the projecting portion is said to be tiltable. A transport trolley that is erected after the insertion of the support column holding portion is completed when it is positioned at the second end.
A locking member that holds the strut member and the strut holding portion at a set relative position in the longitudinal direction of the elongated hole when the strut member is inserted into the strut holding portion is provided.
A first hole portion is formed in the strut member, and a second hole portion corresponding to the first hole portion is formed in the strut holding portion, and the first hole portion and the second hole portion are formed. Is configured so that the strut members are inserted into the strut holding portion and overlap each other to form an engaging portion.
A transport trolley characterized in that, when the locking member engages with the engaging portion, the strut member and the strut holding portion are held at a set relative position in the longitudinal direction of the elongated hole. The transport trolley according to claim 1.
The locking member is
A transport trolley characterized by being a pin member inserted into the engaging portion. The transport trolley according to claim 1.
The locking member is
A transport trolley characterized by being a plunger member provided with a locking portion for locking the first hole portion and the second hole portion. The transport trolley according to any one of claims 1 to 3.
The locking member is
A transport trolley including an engagement maintaining portion that maintains engagement with the engaging portion. The transport trolley according to any one of claims 1 to 4.
The first hole portion is composed of the lower end portion of the elongated hole formed in the column member, or the second hole portion is composed of the upper end portion of the elongated hole formed in the column holding portion. Transport trolley. The transport trolley according to any one of claims 1 to 5.
A transport trolley including a tilting position setting unit that supports a free end side of the strut member and sets a tilting stop position of the strut member when the strut member is tilted. The transport trolley according to claim 6.
The strut member
The upper side surface is positioned lower than the upper surface of the load receiving surface of the load receiving platform while being supported by the tilting position setting portion, and the lower side surface is located at the same position as the lower surface of the loading platform or higher than the lower surface. A transport trolley characterized by being positioned. The transport trolley according to any one of claims 1 to 7.
The consignment stand
A transport trolley characterized in that a caster accommodating portion for accommodating the casters of the transport trolley arranged on the upper side is formed when other transport trolleys are superposed in the vertical direction.

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