JP2018090031A - Carrier cart having front rising floor panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cart that has a simple structure, is lightweight, and can be nested.SOLUTION: A frame-like floor panel 5 is tilted at an angle θ at which the floor panel rises forward in an advancing direction C of a cart, and is mounted on a floor frame 1, which has casters 10a and 10b, via support columns 7 and 7a. Lengthways fixture plates 17 are fixed to outside caster plates 12 of the rear-side casters 10b of the floor frame 1, and a floor frame 1, a floor panel 5, and a cargo break prevention flank panel 20 are secured between the lengthways fixture plates 17. A gap 18 is formed above the floor panel 5 at the lower end of the flank panel 20 of the floor frame 1, whereby a carrier cart 50 is provided. A floor panel 5A of another carrier cart 50A is inserted from behind the gap 18 so that support columns 7A and 7aA can be stowed in a stowage opening 8. The angle θ and thickness t of the floor panel 5, the support columns 7 and 7a, and the stowage opening 8 are designated in order to ensure a nesting efficiency of one-half or more.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transporting carriage including a front rising floor panel that can carry a load on the floor panel.

In a transport cart that is used for logistics by placing a load on a floor panel that serves as a loading platform, the loading platform is usually formed substantially horizontally. This is because it was generally thought that the load slipped due to vibration during transportation and light collision when there was an inclination.
Moreover, when not using the transportation trolley | bogie, the device which overlaps the adjacent transportation trolley called a nesting in the up-down direction was made | formed in order to store the area which occupies several floors as little as possible.

(1) In this case, a plate-like floor panel (loading platform) is indispensable for the transportation cart, and nesting cannot be performed when the floor panel is located on the same plane. Therefore, in the transport cart, the floor panel on which the load is placed and the floor frame to which the casters are attached are separated, and the floor frame is shaped like a frame, and the floor panel is rotated vertically along the side panel (Patent Document 1). Alternatively, the floor panel is folded in two (Patent Document 2), and the frame-like floor frame is brought closer to the nesting with the adjacent carriage.
In such a cart, it is necessary to temporarily raise and fold the floor panel during nesting.

(2) In addition, when a plate-like floor panel is formed so as to be rotatable around the horizontal axis at the rear end and the trolley is stacked from the rear side during nesting, the plate-like floor trolley plate There is also a suggestion that the floor panel is pushed and rotated so that the front end rises and tilts, and the lower surface side of the floor panel of the rear transport cart overlaps the upper surface side of the floor panel of the front transport cart and can be nested (Patent Document 3). There has also been proposed a structure in which a spring is provided between the floor panel and the floor frame, and the front side of the floor panel is lifted and inclined by the spring so that nesting can be similarly performed (Patent Document 4).

Japanese Patent Laid-Open No. 2002-19614 JP 2010-18076 A JP-A-8-169342 JP-A-7-257386 JP 2002-205653 A

  In a transport cart with a floor panel that serves as a loading platform, the floor panel is leveled during transportation, and when nesting, the floor panel is rotated around the water axis so that the floor panel is tilted upwards. And nesting (Patent Documents 1 to 4). These require a horizontal axis, and are generally handled messyly in transport carts, especially when nesting and releasing nesting, and are operated with momentum. It was the cause.

Therefore, if the floor panel is fixed to the floor frame with casters on the lower surface without providing a horizontal axis, and the floor panel is tilted to the extent that there is no hindrance to transportation, transportation with luggage is carried. And both nesting functions.
For example, a cart that assumes only a relatively light load can be configured to be fixed like a cantilever with respect to a floor frame (Patent Document 5), but a heavy load (usually several hundred kg) It was difficult to configure the floor panel on which the load was placed in a tilted state with a cantilever structure and so that the floor panel of the other transport carriage overlaps the lower surface of the floor panel. .

  The present invention is a trolley truck capable of nesting, in which a floor panel placed on a floor frame provided with casters is moved forward in the direction of travel, the floor frame and the floor panel are fixed with a support material, and the rear end side of the floor panel Since the storage opening is formed in the floor, there is no moving part on the floor panel, and it is possible to provide a transport cart that can transport and nest the cargo with a simpler structure.

In other words, the present invention is a transport cart provided with a front-up floor panel, characterized in that a floor panel on which a load is placed is arranged on a floor frame provided with a traveling caster and is configured as follows.
(1) The casters are respectively attached to the front side and the opposite rear side of the floor frame.
(2) A rear end of the floor panel is fixed to a rear end of the floor frame, a support member is erected at a middle position in the front-rear direction on the upper surface of the floor frame, and a lower surface of the floor panel is disposed on an upper end of the support member. Are connected and fixed, and the floor panel is arranged at a predetermined angle from the rear side toward the front side.
(3) The above-mentioned transportation cart is nested on the same plane by inserting “on the upper surface side of the floor panel of one transportation cart” and inserting “the lower surface side of the floor panel of another transportation cart” from behind. Formed possible,
"Predetermined angle and thickness of the floor frame"
When nesting, the floor frame of at least one transport cart and the floor frame of another transport cart are “the length of the transport cart in the front-rear direction, and can be at least half as long. Is formed.
(4) During the nesting, the front caster and the rear caster are arranged so that the rear caster of one transport cart and the front caster of the other transport cart do not cushion each other in a planar position. Has been placed.
(4) The floor panel is formed with an accommodation opening from the rear end toward the front side, which can accommodate a support material for another transportation carriage during nesting, and the accommodation opening is arranged in the front-rear direction. It arrange | positions in the position along the driving | running | working locus | trajectory of the said support material at the time of drive | working.

Moreover, in the above, it is a trolley | bogie with the front rising floor panel characterized by being comprised as follows.
(1) The front end of the floor frame was positioned at the same or more rear end than the front end of the floor panel.
(2) The distance between the support column located on the front end side of the floor panel and the front end of the accommodation opening is L3,
When the distance in the front-rear direction of the carriage is L0,
L0> 3 × L3
It was.

Moreover, in the above, it is a trolley | bogie with the front rising floor panel characterized by being comprised as follows.
(1) A side panel for preventing load collapse is attached to at least one side of the upper surface of the floor frame, and the side panel for preventing load collapse is used when nesting a transport carriage. The side panel is arranged so that the “panel” and the “side panel of another transport carriage” do not buffer.
(2) The floor frame has a substantially square shape in plan view, and side panels for preventing load collapse are arranged along the rear side in the traveling direction.
(3) The load collapse prevention panel was formed in a gate shape in which the upper ends of the vertical members erected at the corners of the floor frame were connected by a horizontal member.
(4) A laterally U-shaped auxiliary panel with the front side closed and the rear side opened was attached to the side panel for preventing load collapse, and the closed side was formed wider in the vertical direction than the rear side.

  According to the present invention, a support material is provided on a floor frame, the floor panel is formed in an upward slope at a predetermined angle from the rear side to the front side, and an accommodation opening is formed in the floor panel. Since the floor panel of the transport carriage and the floor panel of the other transport carriage are formed in such a way that “the length of the transport carriage is the length in the front-rear direction and at least half the length can be overlapped”, it is simple. With a simple structure, it is possible to construct a lightweight transport cart.

In the first embodiment of the present invention, (a) is a plan view and (b) is a front view. In the first embodiment of the present invention, (a) shows a right side view and (b) shows a bottom view. In 1st embodiment of this invention, it is an expansion perspective view (partially see-through | perspective view) around the back side accommodation opening. (A) is sectional drawing in the refraction AA line of FIG.1 (b), (b) is sectional drawing in BB line. In the first embodiment of the present invention, (a) is a plan view and (b) is a front view with the auxiliary panel rotated. The front view of the state which carried out the nesting of 3 units | sets by 1st embodiment of this invention is represented. In the second embodiment of the present invention, (a) is a plan view and (b) is a front view. In the second embodiment of the present invention, (a) is a plan view and (b) is a front view with the auxiliary panel rotated. In the second embodiment of this invention, it is an expansion perspective view (partially see-through | perspective view) around the back side accommodation opening. The front view of the state which carried out the nesting of 3 units | sets by 2nd embodiment of this invention is represented.

  Embodiments of the present invention will be described with reference to the drawings. In the following description, the traveling direction of the transport carriage is the direction indicated by the arrow C (right to left in FIGS. 1A and 1B and from the near side to the far side in FIG. 2A). The side located is the front side, and the side located behind is the back side.

1. First embodiment (FIGS. 1 to 5)

  In this embodiment, the support columns 22 of the side panel 20 are formed one by one.

(1) The front side position in the longitudinal direction of the side frames 3 and 3 arranged in a plane substantially C shape (open substantially U shape) so that the front side is narrow and closed, and the rear side is wide and open. The connecting members 3a and 3b are installed and fixed at intermediate positions, respectively, so that the frame-like floor frame 1 is integrally formed. On the lower surface 2a of the floor frame 1, the caster plates 11 and 12 of the four casters 10 are fixed near the four corners. The front caster plates 11 and 11 are disposed inside the side frames 3 and 3, the side frames 3 and 3 are placed on the upper surfaces of the caster plates 11 and 11, and the front connecting material 3 a is placed. . The rear caster plate 12 is disposed outside the side frames 3 and 3, and the rear side of the side frame 3 is placed on the upper surface 12b of the caster plate 12 (FIG. 4A).
The front ends of the caster plates 11, 11 are substantially aligned with the front ends of the side frames 3, 3. Further, the rear side ends of the caster plates 12 and 12 are substantially matched with the rear side ends of the side frames 3 and 3 (FIG. 4A).
In addition, the rear caster plates 12 and 12 have the lower edge of the vertical fixing plate 17 connected and fixed to the outer edge 12a, respectively, and the vertical vertical fixing plate 17 is connected to the horizontal caster plate 12 and continuous. With this structure, it is formed in an L shape when viewed from the right side (FIG. 1 (c), FIG. 3). The vertical fixing plate 17 is a horizontally long rectangle, the rear end is in the same position as the rear end of the caster plate 12 in plan view, and the front end of the vertical fixing plate 17 is flatter than the front end of the caster plate 12. A front bent portion 17a that is located on the front side as viewed and bent inward at the front end of the vertical fixing plate 17 is formed at the same height and bent substantially at a right angle in plan view (FIG. 4A). ), FIG. 3, FIG. 1 (b), FIG. 2 (b)).
Although the casters 10 can be configured in any manner such as the same, the front casters 10a and 10a are generally set as free casters and the rear casters 10b and 10b are set as fixed casters in the traveling direction C.

(2) The floor panel 5 is formed in a substantially rectangular (rectangular) lattice pattern with a length L0 in the front-rear direction, a front width D1, and a rear width D2. The floor frame 1 is formed so that the upper surface 2 thereof is substantially horizontal when all the casters 10a and 10b are grounded in the traveling direction A. A floor panel 5 is disposed above the floor frame 1, and the floor panel 1 5 (upper surface 6) is arranged so as to rise upward at an angle θ toward the traveling direction with respect to the upper surface 2 of the floor frame 1 (the front end 5a is higher than the rear end 5b). (FIG. 1B). here,
θ ≒ 3 ° (tanθ ≒ 0.05)
Form with degree.
The floor panel 5 is formed so that the crosspieces 5c and 5c are arranged at positions corresponding to the connecting members 3a and 3b of the floor panel 1 in the front-rear direction, and overlap the connecting members 3a and 3b in a plan view. ing. A support pillar 7 having a slightly higher height is fixed at an intermediate position in the length direction of the connecting material 3a of the floor frame 1 (direction orthogonal to the C direction), and the length direction of the connecting material 3b (direction orthogonal to the C direction). ), The support pillar 7a having a slightly lower height is fixed at the intermediate position, and the upper ends of the support pillars 7 and 7a are fixed to the horizontal beam members 5c and 5c at the lower surface 6a of the floor frame 5, and the floor panel 5 is inclined. Maintained. Further, the outer surface near the end 5b on the rear side of the floor panel 5 is fixed to the inner surface side of the vertical fixing plate 17 of the caster plate 12 of the floor frame 1, and the lower surface 6a on the rear side of the floor panel 5 is fixed vertically. It is fixed in contact with the upper edge of the front bent portion of the plate (FIGS. 1B, 3 and 4).

(3) The floor panel 5 is formed in a frame shape by fixing a vertical inner frame and a horizontal inner frame inside an outer peripheral frame composed of a front frame, a rear frame, and a side frame, in the vicinity of the center in the width D1 and D2 directions. The housing opening 8 is formed in the front-rear direction (length L0 direction) from the rear end 5b. The accommodation opening 8 has an end (bottom) 8a of the opening in the vicinity of the support column 7a, and the opening edge 8b of the accommodation opening 8 is open to the end 5b on the rear side of the floor panel 5 (FIG. 4 ( b), FIG. 3).
The accommodation opening 8 is formed along the traveling locus 9 of the support columns 7 and 7a of the floor panel 1 in the traveling direction C, and is formed to be larger in the width of the support columns 7 and 7a (see FIG. 2 (b), FIG. 4 (b)).
Further, the length of the floor panel 5 in the traveling direction C is L0,
L1 Distance from the front end 5a of the floor frame 1 to the support column 7 (front side in the running direction)
L2 Length of accommodation opening 8
(Length from the rear end 5b of the floor panel to the end 8a of the accommodation opening 8)
L3 Distance between the support column 7 and the end 8a of the accommodation opening 8 (near the rear end of the support column 7a)
In this case, the length of L3 is such that “L0-L3” is an overlapping margin of the front and rear trolleys during nesting (FIG. 4B). The position of the end 8a of the accommodation opening 8 is defined by the position of the support pillar 7a on the rear side (cannot be arranged in front of the support pillar 7a). If the distance between the support pillars 7 and 7a is made as short as possible and L3 is made as small as possible. Increases nesting efficiency. Further, if the support pillar 7a is omitted and the end 8a of the accommodation opening 8 is brought close to the support pillar 7, L3 can be made smaller and nesting efficiency can be made higher.

(4) When the floor panel 1 has a width D1 of the front end 5a and a width D2 of the rear end 5b in plan view,
D1 = D2
In consideration of the ease of insertion during nesting, the corners at both ends on the front side (near the intersection of the front frame 4a and the side frame 4c) are cut off (FIG. 1A). In addition, considering the ease of insertion during nesting,
D1 <D2
(Not shown).

(5) The lower edge of the vertical fixing plate 17 is connected and fixed to the outer edges 12a of the rear caster plates 12 and 12, respectively, and the vertical vertical fixing plate 17 is connected to the horizontal caster plate 12 in a continuous manner. With the above structure, it is formed in an L shape when viewed from the right side (FIG. 1 (c), FIG. 3).
Further, the rear side of the rear frame 4b and the side frame 4c of the floor frame 1 is fixed to the inside of the vertical fixing plate 17, and in this state, the lower surface of the rear frame 4b (the lower surface 2a of the floor frame 1) and the caster plate 12 A gap 18 of a predetermined distance is formed between the upper surface 12b (FIGS. 3A and 3B).

(6) Further, the front caster 10a has travel tracks 14 and 14 in the travel direction, and is disposed slightly inside so as not to overlap the travel tracks 15 and 15 of the rear caster 10b (see FIG. 1 (a), FIG. 2 (b), FIG. 4 (a)).
Note that the front caster 10a and the rear caster 10b may be arranged in another manner as long as the travel locus 14 and the travel locus 15 do not overlap. For example, the front caster 10a (caster plate 11) can be arranged at the corner, and the rear caster 10b (caster plate 12) can be arranged close to the center (not shown).

(7) The support 22 made of pipe material and the side panel 20 having a portal structure in which the upper ends of the support 22 are connected by the horizontal connecting member 24 are configured. The side panel 20 is used to prevent the collapse of the load, and horizontal bars 25 and 25a are installed and fixed between the support columns 22 and 22 of the side panel 20 (FIG. 2A). Here, although the two crosspieces 25 are installed, they are provided to prevent the collapse of the load. Therefore, the number of the crosspieces 25 is arbitrary, and can be formed in a lattice shape in combination with the vertical crosspieces (see FIG. Not shown). However, on the upper surface 6a of the floor panel 5, the vertical and horizontal crosspieces are not formed below the front edge 5a, but the other end of the side panel 20 (below the lower crosspiece 25a) is subjected to other nesting. It is necessary to form a gap 18 through which the floor panel 5 of the carriage can pass (FIGS. 2A and 3). That is, the height position of the lower surface of the crosspiece 25a is set higher than the height position of the front end 5a of the floor panel 5.
Note that the gate-shaped side panel 20 can be formed by bending the pipe material to form the column 22, the lateral connection member 24, and the column 22 (not shown).
Moreover, the side panel 20 fixes the lower end part of the support | pillars 22 and 22 to the outer surface of the vertical fixing plates 17 and 17 (FIG. 3). In this case, the lower ends 22 a and 22 a of the support columns 22 and 22 are located in the height direction in the vicinity of the caster plate 12 of the floor frame 1.

(8) Since the front side of the floor panel 5 having the width D1 passes through the column 22 of the side panel 20 and the width D3 of the column 22 during nesting,
D1 (D2) <D3
It is as. In this case, D3 is larger than D1 (D2) by the thickness of the vertical fixing plate 17, but D3 can be larger than D1 (D2) (not shown).

(9) In addition, a lateral U-shaped auxiliary panel 30 is attached to the outside of the column 22 of the side panel 20 in a front view. The auxiliary panel 30 has a structure that is narrow toward the front side and has an opening 34 formed at the rear side. The auxiliary panel 30 is formed by bending the pipe material to form an upper diagonal member 31, a lower diagonal member 32, and both diagonal members 31, 32. It is comprised from the vertical connection material 33 which connects a front side. The rear end portion of the lower diagonal member 32 is rotatably attached to the outer surface side of the column 22 by a horizontal shaft 35. A holding tool 36 is provided at the rear end of the upper diagonal member 31. The holder 36 is engaged with the support 22 so as to sandwich the support 22 so that the auxiliary panel 30 does not rotate. When the support 36 and the support 22 are unlocked, the auxiliary panel 30 is moved to the horizontal axis. It is formed so that it can freely rotate around 35 (FIGS. 1B and 5B).
In the auxiliary panel 30, a reinforcing vertical member 37 is installed and fixed between the diagonal members 31 and 32 on the front side (vertical connecting member 33 side), and the vertical reinforcing member 37 is disposed substantially parallel to the vertical connecting member 33. Further, the lower diagonal member 32 is arranged in a substantially vertical state in a state where the holder 36 of the auxiliary panel 30 is locked to the support column 22 and the rotation is suppressed (FIG. 5B).
Further, the auxiliary panels 30 and 30 on both sides are arranged substantially in parallel in a plan view, and are flat by the width of the column 22 of the side panel 20 (length perpendicular to the C direction) and the thickness of the reinforcing vertical member 17. As viewed, a gap is formed between the front end (vertical connecting member) and the outer edge of the side plate 4c of the floor frame 1 (FIG. 1 (a)). Moreover, the auxiliary panels 30 and 30 can also be attached in a state where the front side is opened slightly outward as compared with the rear side in plan view (not shown).
In addition, when the holding panel 36 is unlocked by the auxiliary panel 30 and rotated to the rear side (the right side around the horizontal axis 35 in FIG. 1B), the lower diagonal member 32 substantially overlaps the column 22. A locking member 39 that locks to the front side of the column 22 is attached to the lower diagonal member 32 so as to maintain the state (FIGS. 5B and 1B).
Moreover, although the auxiliary panel 30 was attached to both the support | pillars 22 and 22 of the side panel 20, it can also be attached only to one support | pillar 22 (not shown).

(10) The transport carriage 50 of the present invention is configured as described above (FIGS. 1 and 2). In this embodiment, the floor panel 5 is, for example,
D1 = 800mm
D2 = 800mm
L0 = 1100mm
t = 12mm
Form with. In this embodiment, the length in the traveling direction C of the transport carriage 50 and the length in the traveling direction C of the floor panel 5 are all the same at L0.

2. Operation of the transportation carriage 50 of the first embodiment

  Next, the operation of the transport carriage 50 will be described.

(1) When placing a load on the floor panel 5, if one or both of the auxiliary panels 30 are rotated rearward and the locking member 39 of the auxiliary panel 30 is locked to the column 22 (FIG. 5 (b) )), The load can be loaded from three directions without the side panel 20 on the plane of the floor panel 5 (FIG. 5A). In addition, when loading a load only from the front end 5a side of the floor panel 5, the auxiliary panel 30 does not need to be rotated (FIG. 1 (a)).

(2) In this transporting carriage 50, as with an ordinary carriage, a load is placed on the upper surface 6 of the floor panel 5, and each caster 10a, 10b is grounded to the ground 53 (FIG. 1 (b)). ). At this time, since the luggage has the auxiliary panel 30, it is possible to prevent the luggage from collapsing without connecting the luggage and the side panel 20 with a belt or the like.
Further, since the floor panel 5 is inclined and the front end 5a is raised, it is possible to prevent a load from falling from the front end 5a during a sudden stop during traveling.

(3) When the transport cart 50 is not used, a plurality of transport carts 50 and 50 can be nested. From the rear side of the transport cart 50, the front side of the other transport cart 50A (if the casters 10a and 10a side of the floor frame 1 are overlapped, the front side of the floor frame 1A of the rear transport cart 50A is the front transport side. The floor frames 1 and 1A can be overlapped in the same plane through the gap 4 of the floor frame 1 of the carriage 50 (FIG. 4 (a) shown by the chain line 1A). The outer sides of the side frames 3A, 3A of the rear carriage 50A overlap the inside of the side frames 3, 3.
In addition, the front side of the floor panel 5 of the rear transportation cart 50A enters from the gap 18 at the lower end of the side panel 20 of the rear transportation cart 50 and enters the upper surface 6 of the floor panel 5 of the transportation cart 50 behind The lower surface 6aA of the floor panel 5A of the transport cart 50A on the side overlaps vertically. At this time, since the travel locus 9 of the support pillars 7 and 7a coincides with the length direction of the operation opening 8 (FIG. 2B), the support pillar of the floor frame 1A of the transport cart 50A on the rear side. 7A and 7aA are accommodated in the accommodation opening 8 from the opening 8b of the accommodation opening 8 of the transport cart 50 on the front side (FIGS. 4B and 2B). At this time, the support column 7 of the rear transportation carriage 50 </ b> A is located near the front end 8 a of the accommodation opening 8 of the front transportation carriage 50, or is placed on the front end 8 a of the accommodation opening 8. To do.
At this time, since the front side (vertical connecting member 33A side) of the auxiliary panel 30A of the rear transport cart 50A is inserted from the opening 34 of the auxiliary panel 30 of the front transport cart 50, the auxiliary panels 30, 30A Can be stacked in a vertical plane. At this time, the vertical connecting member 33A of the auxiliary panel 30 of the rear transportation cart 50A is not in contact with the reinforcing vertical member 37 of the auxiliary panel of the front transportation cart 50 (FIG. 6).
Similarly, if the transportation carriage 50B is further inserted from the rear side of the transportation carriage 50A, the transportation carriage 50A and the transportation carriage 50B can be similarly overlapped, and the three transportation carriages 50, 50A, 50B can be nested (FIG. 6). Naturally, four or more transport carts 50 can be nested (not shown).
At this time, since the traveling tracks 14 and 15 are different between the front caster 10a and the rear caster 10b, the casters 10aA and 10aA on the front side of the transport cart 50A are connected to the casters 10b and 10b on the rear side of the transport cart 50, respectively. Further, the casters 10aB and 10aB of the transport carriage 50B are not buffered.

(4) At this time, the support column 7 of the rear transportation cart 50 </ b> A is located at the end 8 a of the accommodation opening 8 of the front transportation cart 50. When overlapped, the length L1 on the front side of the rear transport cart 50A overlaps further from the position L2 (the end 8a of the operation opening 8) from the rear end of the transport cart 50. . Therefore, with respect to the length (= length of the floor panel 5) L0 in the traveling direction C of the carriage 50A,
(L1 + L2) / L0
Becomes the efficiency of nesting,
(L1 + L2) /L0≈0.7
Thus, the nesting efficiency can be secured at two thirds (FIG. 6). That is, by nesting, it becomes 2L0, but the length increases by about one third. That is, (L1 + L2) / L0− (L0 / L0) ≈0.7− (L0 / L0)
Ｌ L3 ≒ 0.3
And
L0> 3 × L3
Can be secured.

(5) Further, even when viewed in the actual nesting state (FIG. 6), the front side of the transportation carriage 50A can be nested by the length L with respect to the length L0 in the traveling direction of the transportation carriage 50. ,in this case,
L / L0 ≒ 0.73
Thus, the nesting efficiency can be secured at two thirds. That is, similarly, nesting results in an increase of about one third of the length when it becomes 2L0.
In this case, it is desirable that the nesting efficiency is at least half, and if the thickness t is thin (the strength of the floor panel 5 is weak) and the inclination θ is large, the nesting efficiency can be increased accordingly. If the thickness t is thick (the strength of the floor panel 5 becomes strong) and the inclination θ is small, the nesting efficiency is lowered accordingly. Therefore, the thickness t and the inclination θ are set so as to be more than half. Correspondingly, the accommodation opening 8 and the support pillars 7 and 7a are also set.

3. Second embodiment (FIGS. 7 to 10)

  This embodiment is different from the first embodiment in the configuration in which the auxiliary column 23 is added to the side panel 20, and the other configurations are the same.

(1) As in the first embodiment, the gate-shaped side panel 20 is formed, and the auxiliary column 23 is arranged in parallel with the column 22 of the side panel 20 and the front side (traveling direction C side) of the column 22; The auxiliary struts 23 and the struts 22 are connected by auxiliary strut connecting members 28 and 28 in the horizontal direction. The lower end 23a of the auxiliary column 23 is at the same height as the lower end 22a of the column 22, and the upper end of the auxiliary column 23 is set to the same height as the upper end of the column 22 and is connected by an auxiliary column connecting material 28 (see FIG. 7 (a) (b)). That is, in this embodiment, the role of the column 22 of the side panel 20 is played by the “column 22, auxiliary column 23, and auxiliary column coupling material 28” in this embodiment, and the side panel 20 having higher strength and can do.

(2) Similarly to the first embodiment, the floor frame 1 (including the casters 10a and 10b, the support pillars 7 and 7a, the vertical fixing plate 17 and the like) and the floor panel 5 inclined at an angle θ are configured. (FIGS. 7 and 9).

(3) Further, similarly to the first embodiment, the support column 22 and the auxiliary support column 23 of the side panel 20 are fixed to the outside of the vertical fixing plate 17, and the lower surfaces 22a and 23a are fixed to the rear caster plate 12. It is positioned near the upper surface 12b (FIG. 9).
Further, since the distance between the auxiliary columns 23 and 23 is the same as the distance D3 between the columns 22 and 22, and no crosspiece is disposed between the auxiliary columns 23 and 23, the lower end between the columns 22 and 22 is A gap 18 similar to that in the first embodiment is maintained.

(4) Moreover, the horizontal U-shaped auxiliary | assistant panel 30 is attached to the outer side of the support | pillar 22 and the auxiliary | assistant support | pillar 23 of the panel 20 like a 1st embodiment by front view. The structure of the auxiliary panel 30 is the same as that of the first embodiment. The auxiliary panel 30 is narrow toward the front side and has an opening 34 formed at the rear side. The pipe material is bent to form the upper diagonal member 31 and the lower diagonal member. It is comprised from the material 32 and the vertical connection material 33 which connects the front side of both the diagonal materials 31 and 32. As shown in FIG. The rear side of the lower diagonal member 32 is rotatably attached to the outer surface side of the auxiliary column 23 by a horizontal shaft 35. A holding tool 36 is provided at the rear end of the upper diagonal member 31. The holder 36 is engaged with the support 22 so as to sandwich the support 22 so that the auxiliary panel 30 does not rotate. When the support 36 and the support 22 are unlocked, the auxiliary panel 30 is moved to the horizontal axis. It is formed so that it can freely rotate around 35 (FIGS. 7B and 8B).
Further, as in the first embodiment, a reinforcing vertical member 37 is installed between the diagonal members 31 and 32 on the front side (vertical connecting member 33 side) of the auxiliary panel 30, and the vertical reinforcing member 37 is connected vertically. It is arranged substantially parallel to the material 33. Further, the vertical connecting member 33 is disposed in a substantially vertical state in a state where the holder 36 of the auxiliary panel 30 is locked to the support column 22 and rotation is suppressed.
Further, as in the first embodiment, the auxiliary panels 30 and 30 on both sides are arranged substantially in parallel in a plan view, and since there are the support column 22 and the auxiliary support column 23, the front end (vertical connection) in the plan view. There is a gap between the material and the outer edge of the side plate 4c of the floor frame 1 (FIG. 7A). Moreover, the auxiliary panels 30 and 30 can also be attached in a state where the front side is opened slightly outward as compared with the rear side in plan view (not shown).
Further, when the retainer 36 is unlocked by the auxiliary panel 30 and rotated to the rear side (the right side around the horizontal axis 35 in FIG. 7B), the lower diagonal member 32 substantially overlaps the auxiliary column 23. A locking member 39 that locks to the front side of the support column 22 is attached to the lower diagonal member 32 so as to maintain the state (FIGS. 7B and 8B).
Moreover, although the auxiliary panel 30 was attached to both the support | pillars 22 and the auxiliary support | pillar 23 of the panel 20, it can also be attached only to the support | pillar 22 of one side, and the auxiliary | assistant support | pillar 23 (not shown).

(5) The carriage 50 according to the second embodiment is configured as described above (FIG. 7).

(6) The operation of the transport carriage 50 is the same as in the first embodiment.
That is, one or both of the auxiliary panels 30 are rotated rearward, the locking member 39 of the auxiliary panel 30 is locked to the auxiliary column 23 (FIG. 7), the load is placed on the floor frame 1, and each caster 10a 10b is grounded on the ground 53 and travels (FIG. 7B). Further, as in the first embodiment, since the auxiliary panel 30 is provided, it is possible to prevent the luggage from collapsing without connecting the luggage and the panel 20 with a belt or the like. Further, even when the transport carriage 50 is stopped suddenly, the floor panel 5 is inclined with the front side raised, so there is no possibility that the luggage will fall from the front end 5 a of the floor panel 5.

(7) Similarly to the first embodiment, when the transporting carriage 50 is not used, three trucks 50A and 50B are overlapped from the rear side of the transporting carriage 50 when the front sides of the other transporting carriages 50A and 50B are overlapped. The trolleys 50, 50A and 50B can be nested (FIG. 9). At this time, the front and rear transport carts 50, 50A, 50B, the traveling direction C,
L / L0 ≒ 0.73
Thus, the nesting efficiency can be secured at two thirds. The nesting efficiency is preferably 1/2 (0.5) or more, as in the above-described embodiment, and the material thickness t of the floor panel 5, the inclination θ, Furthermore, support pillars 7 and 7a and accommodation openings 8 (lengths of L0, L1, L2, and L3) are secured.

4). Other embodiments

(1) In each of the above embodiments, the lower end 22a of the column 22 of the panel 20 is set to the same height as the upper surface 12b of the caster plate 12, but is vertically fixed so as to be positioned above the upper surface 12b of the caster plate 12 It can also be fixed to the plate 17 (not shown).

(2) Further, in each of the above embodiments, the column 22 (auxiliary column 23) of the side panel 20 is directly fixed to the vertical fixing plate 17, but the pipe-shaped column holder is provided inside the vertical fixing plates 17 and 17. Is fixed, the column 22 of the panel 20 (and the auxiliary column 23) is inserted into the column holder, the panel is attached, and the panel 20 can be detachable (not shown).

(3) Moreover, in each said embodiment, since the structure of the floor panel 5 was made into the grid | lattice form and the clearance gap was formed between each frame material, it can oppose sufficient intensity | strength and torsion, and can be formed in lightweight, As mentioned above Other configurations such as a plate shape (not shown) can be used as long as the nesting efficiency of an angle θ, a thickness t, and a half or more is satisfied.

(4) Further, in each of the above embodiments, two support pillars 7 and 7a are provided as the support material, but it is also possible to use one support pillar (not shown). Also, it can be three or more.
Moreover, in each said embodiment, a support material (support pillar 7, 7a) maintains the inclination of the floor panel 5, and fixes to the floor frame 1, and a shape is not restricted to column shape, Support pillar 7, 7a is attached. It is optional (not shown) such as a tied wall shape (plate shape). In this case, the configuration of the accommodation opening 8 is also set so that the traveling locus is the same.

DESCRIPTION OF SYMBOLS 1, 1A, 1B Floor frame 2 Upper surface 2a of floor frame Lower surface 3 of floor frame Side frame 3a, 3b of floor frame 4 Joint frame 4 of floor frame 5 Floor panel 5a Front end 5b of floor panel Floor panel Rear end 5c of the floor panel 6 The crosspiece 6 of the floor panel The upper surface 6b of the floor panel The lower surface 7 and 7a of the floor panel The support pillar 8 The receiving opening 9 The traveling trajectory 10a, 10aA, 10aB of the support pillar Caster (front side)
10b, 10bA, 10bB Caster (rear side)
11 Caster plate (front side)
12 Caster plate (rear side)
12a Outer edge of caster plate (rear side) 12b Upper surface of caster plate (rear side) 14 Traveling track (front caster 10a)
15 Traveling track (rear caster 10b)
17 Vertical fixing plate 17a Front bending portion 18 of vertical fixing plate Gap (upward behind floor panel 5)
20, 20A, 20B Side panel 22 Side panel column 22a Side panel column lower end 23, 23A, 23B Auxiliary column 23a Auxiliary column lower end 24 Side panel lateral coupling member 25, 25a Side panel bar 30 Auxiliary panel 31 Auxiliary panel upper diagonal member 32 Auxiliary panel lower diagonal member 33 Auxiliary panel vertical connection member 34 Auxiliary panel opening 35 Auxiliary panel horizontal shaft 36 Auxiliary panel holder 39 Locking member (post)
50 Carriage Cart 52 Horizontal Surface 53 Ground

Claims (3)

A transport cart provided with a front-up floor panel, characterized in that a floor panel on which a load is placed is placed on a floor frame provided with a traveling caster and is configured as follows.
(1) The casters are respectively attached to the front side and the opposite rear side of the floor frame.
(2) A rear end of the floor panel is fixed to a rear end of the floor frame, a support member is erected at a middle position in the front-rear direction on the upper surface of the floor frame, and a lower surface of the floor panel is disposed on an upper end of the support member. Are connected and fixed, and the floor panel is arranged at a predetermined angle from the rear side toward the front side.
(3) The above-mentioned transportation cart is nested on the same plane by inserting “on the upper surface side of the floor panel of one transportation cart” and inserting “the lower surface side of the floor panel of another transportation cart” from behind. Formed possible,
"Predetermined angle and thickness of the floor frame"
When nesting, the floor frame of at least one transport cart and the floor frame of another transport cart are “the length of the transport cart in the front-rear direction, and can be at least half as long. Is formed.
(4) During the nesting, the front caster and the rear caster are arranged so that the rear caster of one transport cart and the front caster of the other transport cart do not cushion each other in a planar position. Has been placed.
(4) The floor panel is formed with an accommodation opening from the rear end toward the front side, which can accommodate a support material for another transportation carriage during nesting, and the accommodation opening is arranged in the front-rear direction. It arrange | positions in the position along the driving | running | working locus | trajectory of the said support material at the time of drive | working. The transportation cart provided with the front rising floor panel according to claim 1, which is configured as follows.
(1) The front end of the floor frame was positioned at the same or more rear end than the front end of the floor panel.
(2) The distance between the support column located on the front end side of the floor panel and the front end of the accommodation opening is L3,
When the distance in the front-rear direction of the carriage is L0,
L0> 3 × L3
It was. The transportation cart provided with the front rising floor panel according to claim 1, which is configured as follows.
(1) A side panel for preventing load collapse is attached to at least one side of the upper surface of the floor frame, and the side panel for preventing load collapse is used when nesting a transport carriage. The side panel is arranged so that the “panel” and the “side panel of another transport carriage” do not buffer.
(2) The floor frame has a substantially square shape in plan view, and side panels for preventing load collapse are arranged along the rear side in the traveling direction.
(3) The load collapse prevention panel was formed in a gate shape in which the upper ends of the vertical members erected at the corners of the floor frame were connected by a horizontal member.
(4) A laterally U-shaped auxiliary panel with the front side closed and the rear side opened was attached to the side panel for preventing load collapse, and the closed side was formed wider in the vertical direction than the rear side.

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