JP2021079719A - Carriage and hand-push bar for carriage - Google Patents

Abstract

To provide, at low costs, a carriage which can be utilized as a suspended carriage by a relatively simple component structure, and which can be also utilized as a flat carriage or a hand-push carriage by changing the combination of components as appropriate.SOLUTION: A carriage 1A includes: a flat carriage body 2 in a substantially rectangular shape as viewed from a plane that has insertion holes 2a opened upwardly and formed in the four corners, respectively; a plurality of casters 3 attached to the lower surface of the carriage body 2; four hand-push bars 4 each having the lower end portion inserted in each insertion hole 2a of the carriage body 2 and fastened to the carriage body 2; front, rear, right and left side panels 5 which are provided between the hand-push bars 4 adjoining to each other at the front, rear, right and left sides, respectively, and fastened thereto; and a carriage suspending and coupling bracket 6 attached to the upper part of each hand-push bar 4. Fitting recessed grooves 4a in which respective fitting convexity parts 5a that are the respective ends of the side panels 5 are fitted are formed across the entire length of the respective hand-push bars 4 at the internal side in the back-and-forth direction and at the internal side in the right-to-left direction, and thus the respective ends of the side panels 5 are fastened to the respective hand-push bars 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a trolley for loading and transporting articles, and a push rod used for the trolley.

There are various types of trolleys depending on the application, loaded items, etc. For example, a flat trolley in which a plurality of casters are attached to the lower surface of a flat trolley body, and a push rod at a corner of the trolley body with casters. There are generally known hand-held trolleys, trolleys with casters, and trolleys with enclosures (car trolleys), in which an enclosure made of mesh panels or the like is erected on the edge of the main body of the trolley with casters.
Further, there is also known a hanging trolley that can lift and transport the entire trolley with a crane or the like while the article is placed on the upper surface of the trolley body.
As a hanging trolley, for example, corner struts are erected at the four corners of the trolley body with casters, and the upper frame material is passed between the upper ends of the corner struts adjacent to each other in the front, rear, left and right, and the edge of the trolley body. A side wall made of a mesh panel or the like is attached to a square frame formed of front, rear, left and right adjacent corner columns and an upper frame material, and a connecting bracket for lifting a dolly is attached to the upper end of each corner column or the upper frame material. Be done.

The various trolleys described above usually have individual structures according to their respective forms, and the form cannot be changed.
Here, in Patent Document 1 below, a dolly body having a square mounting portion when viewed from a plane, casters attached to the lower surface of the dolly body, and four pieces erected vertically at the four corners of the dolly body. A push rod made of a single pipe and two supports having a groove-shaped cross section that is attached to the middle part of the length excluding the upper and lower ends of each push rod and opens inward in the front-rear direction and inward in the left-right direction. Disclosed is a transport trolley having a support member having a portion and a side wall having both ends fitted in the support members facing each other of the support members attached to the push rods adjacent to each other in the front-rear direction or the left-right direction. There is.
According to the above-mentioned transport trolley, a plurality of types of trolleys can be obtained by changing the combination of the components. That is, the transport trolley is formed into a flat trolley by combining the trolley body and casters, and is formed into a push trolley by combining the flat trolley with a push rod, and by combining the push trolley with a support member and a side wall. It is in the form of a dolly with an enclosure. Therefore, according to the above-mentioned transport trolley, parts can be standardized and costs can be suppressed.

JP-A-2017-94777

However, in the case of the transport trolley described in Patent Document 1, it is necessary to use a support member in order to form the trolley with an enclosure, and there is a problem that the number of parts increases accordingly.
Further, in the case of the same transport trolley, it is not supposed to be used as a suspension trolley, and it is considered that the load-bearing strength required for the suspension trolley cannot be obtained from a structural point of view.

The present invention has been made in view of the above problems, and can be used as a hanging trolley with a relatively simple component configuration, and can be used as a flat trolley or a hand truck by appropriately changing the combination of the components. The purpose is to provide a dolly that can also be used as a dolly at low cost.

The present invention comprises the following aspects in order to achieve the above object.

1) A flat dolly body that is approximately square when viewed from a plane and has insertion holes that open upward at the four corners.
With multiple casters attached to the underside of the dolly body,
Four push rods whose lower end is inserted into each insertion hole of the dolly body and fixed to the dolly body,
Of the rising parts of the push rods that are adjacent to each other in the front, back, left and right, the front, back, left and right horizontal members that are passed between at least the upper parts or between the middle parts of the length,
It is equipped with a connecting bracket for lifting the dolly that is attached to the top of each push rod.
One of the fitting concave portion and the fitting convex portion to be fitted to each other is formed in the front-rear direction inner portion and the left-right inner portion facing the end portion of the horizontal member of each push rod, and the other is the respective horizontal support. A trolley that is formed at both ends of the material and has the ends of the horizontal member fixed to the push rod so that the fitting state of the fitting concave portion and the fitting convex portion is maintained.

2) The dolly of 1) above, in which each of the front, rear, left, and right horizontal members is composed of vertical side panels, and each side wall of the front, back, left, and right is formed by one side panel or a plurality of side panels arranged vertically. ..

3) In each push rod, a fitting concave groove having a substantially U-shaped cross section is capable of fitting a fitting convex portion consisting of the end portion of the side panel into the inner portion in the front-rear direction and the inner portion in the left-right direction facing the end portion of the side panel. It is formed over the entire length and
The side panel is hollow, and the panel fixing levers are arranged in both ends of the side panel.
The panel fixing lever is swingable in the horizontal direction around a fulcrum provided in the middle part of the length so that it can come into contact with the inner surface of the inner side wall of the side panel, and the inner side wall of the side panel is provided at one end thereof. It has an engaging protrusion that is inserted into the engaging hole formed on the inner surface of the fitting concave groove through the through hole formed in, and is formed on the outer wall of the side panel at the other end. It has an operation convex part that can be projected to the outside of the side panel through the through hole.
Further, in both ends of the side panel, an urging member that urges the panel fixing lever in the swing direction in which the engaging convex portion is inserted into the engaging hole and the operating convex portion is projected to the outside of the side panel. The dolly of 2) above, where is placed.

4) At the upper edge of the side panel, one of a fitting protrusion and a fitting hole that are fitted to each other when a plurality of side panels are arranged one above the other is formed, and the other is a side. The dolly of 2) or 3) above, which is formed on the lower edge of the panel.

5) When a plurality of bogies are stacked up and down on the four corners of the bogie body, the upper ends of the push rods of the lower bogies are contacted or brought close to each other from the side, and the stacked bogies are placed in the horizontal direction. A trolley according to any one of 1) to 4) above, in which a corner guide for stacking that can prevent relative movement is provided in a hanging shape.

6) A lid plate that is approximately square when viewed from the plane, which is placed across the top horizontal members on the front, back, left, and right.
The upper end is swingably connected to the front and rear edges or the left and right edges of the lid plate, and the lower end has a hook that can be hooked to the front and rear edges or the left and right edges of the lower surface of the bogie body. The bar for fixing the lid plate of the book and
Any one of 1) to 5) above, which is provided with a locking means capable of preventing the lid plate fixing bar from swinging in a direction in which the hook portion deviates from the front-rear edge portion or the left-right edge portion of the lower surface of the bogie body. Two trolleys.

7) A push rod that is erected at the four corners of the dolly body, which is substantially square when viewed from the plane of the dolly, and has a lower end in an insertion hole formed so as to open upward at the four corners of the dolly body. It consists of a vertical profile that can be inserted, and is formed at the end of the horizontal member in order to pass the horizontal member to the front-rear and left-right adjacent hand-push rods in the front-rear direction inner part and the left-right direction inner part, respectively. A trolley push rod in which a fitting concave portion or a fitting convex portion to be fitted with a fitting convex portion or a fitting concave portion is formed over the entire length.

In the trolley of 1) above, the lower ends of the push rods are fixed to the four corners of the trolley body, and at least the upper portions or the middle portions of the lengths of the four rising portions of the push rods are horizontally laid in front, back, left and right. Since it is connected and integrated by the material, the load-bearing strength required to lift the dolly with the article loaded can be surely obtained. Further, for example, one end of a chain, a wire rope, or the like is connected to the connecting metal fitting for lifting the trolley on the upper part of each push rod, and the other end is hooked on the lifting hook or the like of the crane to lift the crane or the like. As a result, the trolley of 1) above can be lifted in a stable state.
Further, in the trolley of 1) above, since it is not necessary to use a support member like the transport trolley described in Patent Document 1 in order to connect the end portion of the horizontal member to each push rod, the number of parts is increased accordingly. Less is required.
Further, in the trolley of 1) above, the trolley body and casters can be used in combination to form a flat trolley, and the trolley body, casters and at least one push rod can be combined. By using it, it can be in the form of a push cart.
Therefore, according to the trolley of 1) above, it can be used as a hanging trolley without any trouble, the cost can be suppressed, and it can also be used as a flat trolley or a push trolley by appropriately changing the combination of components. be able to.

According to the bogie of 2) above, since the front, rear, left and right side walls are formed by the side panels constituting the horizontal member, it can also be used as a bogie with an enclosure.

According to the dolly of 3) above, since the end of the side panel is fixed to the push rod by the panel fixing lever, the fixing operation and the fixing release operation can be easily performed.

According to the bogie of 4) above, the rigidity of the side wall made of the side panels stacked vertically is increased.

According to the trolley of 5) above, a plurality of trolleys can be safely stacked.

According to the trolley of 6) above, since the article loaded on the trolley body can be covered with the lid plate, damage or deterioration of the article can be effectively suppressed.
Further, according to the trolley of 6) above, the lid plate can be locked so that the lid plate cannot be removed by the lid material fixing bar and the locking means, so that an excellent anti-theft effect can be obtained.

According to the trolley push rod of 7) above, the transport trolley according to Patent Document 1 is made of a vertical profile having a fitting recess or a fitting protrusion for connecting the end portions of the horizontal members. It is possible to construct a trolley with an enclosure or a hanging trolley while suppressing the cost without using such a support member.

It is a perspective view of the carriage which concerns on 1st Embodiment of this invention. It is a plan view of the trolley. It is a left side view of the trolley. It is a front view of the trolley. It is a partially enlarged cross-sectional view along the VV line of FIG. It is a partially enlarged cross-sectional view along the VI-VI line of FIG. FIG. 3 is a partially enlarged cross-sectional view taken along the line VII-VII of FIG. It is a front view which shows the state in which two of the same carriages are stacked. It is a left side view of the carriage which concerns on 2nd Embodiment of this invention. It is a front view of the trolley. The details of the side panel used for the trolley are shown, (a) is a plan view with the middle omitted, (b) is a front view with the middle omitted, and (c) is the c of (a). It is a cross-sectional view along the line −c, and (d) is an enlarged plan view of a panel fixing lever housed in the side panel. It is a partially enlarged left side surface showing a connecting structure between the end portion of the side panel and the push rod. It is a partially enlarged horizontal sectional view which shows the connection structure. A dolly according to a third embodiment of the present invention is shown, in which (a) is a plan view and (b) is a left side view. It is a top view of the trolley which concerns on 4th Embodiment of this invention. It is a left side view of the trolley. It is a front view of the trolley. It is a top view of the lid plate used for the carriage. It is a left side view of the lid plate.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 19.
In the following description, the right side of FIGS. 3, 9, 14 and 16 is referred to as "front", the left side is referred to as "rear", and the "left and right" are left and right when viewed from the front (FIGS. 4, 8, 10 and 4, 17 left and right).

[First Embodiment]
1 to 8 show a dolly according to the first embodiment of the present invention.
The dolly (1A) according to this embodiment is a dolly body (2) that is substantially square when viewed from a plane and has insertion holes (2a) that are opened upward at four corners, and a dolly body (2). Multiple casters (3) attached to the lower surface and four push rods (4) fixed to the dolly body (2) by inserting the lower end into each insertion hole (2a) of the dolly body (2). ), And the front, rear, left and right horizontal members (5) that are passed between the upper parts or between the middle parts of the length of the rising parts of the push rods (4) that are adjacent to each other in the front, back, left and right. It is equipped with a dolly lifting connecting bracket (6) attached to the top of each push rod (4).

The dolly body (2) has a square shape that is long in the front-rear direction when viewed from the plane, and is attached to the frame (21) assembled in a vertical and horizontal grid pattern and the part of the frame (21) on the upper surface side except for the four corners. It has a plurality of top plates (22a) and (22b) and four caster mounting plates (23) attached to the four corners on the lower surface side of the frame (21).
In the case of the flat trolley shown in FIG. 14, the four corners of the upper surface of the trolley body (2) are casters (3) of the upper trolley (1C) when a plurality of trolleys (1C) are stacked vertically. A caster storage recess (24) is formed that is approximately square when viewed from the plane in which the vehicle is stored.
The frame (21) includes a plurality of vertical frame materials (21a) and horizontal frame materials (21b) connected in a grid pattern, and vertical frame materials (21a) and horizontal frame materials (21a) and horizontal frame materials (21a) that form an outer peripheral portion at a corner portion. It consists of a corner connecting material (21c) that connects with 21b). The vertical frame material (21a) and the horizontal frame material (21b), and the corner connecting material (21c), the vertical frame material (21a), and the horizontal frame material (21b) can be assembled and disassembled by bolts and nuts, respectively. (See Figures 2 and 5 etc.).
As shown in FIG. 5, the corner connecting material (21c) has a vertical tubular portion having a substantially hexagonal cross section having four side walls in the front, rear, left and right directions, and the corners on the outside corner side and the inside corner side are obliquely chamfered. (211), a first connecting portion (212) composed of two parallel vertical walls protruding inward in the front-rear direction from the inner side wall in the front-rear direction of the vertical cylinder portion (211), and a vertical cylinder portion (211). It has a second connecting portion (213) composed of two vertical walls parallel to each other protruding inward in the left-right direction from the inner side wall in the left-right direction. Then, a through-shaped insertion hole (2a) opened vertically is formed by the inside of the vertical tubular portion (211). Therefore, in this embodiment, the insertion holes (2a) at the four corners of the bogie body (2) have a substantially hexagonal cross section. The lower end of the vertical cylinder (211) may be provided with a bottom for receiving the lower end of the push rod (4). If there is the same bottom part, when using it in the form of a push rod (4) as described later, simply insert the lower end of the push rod (4) into the insertion hole (2a) of the carriage body (2), and the push rod (4) ) Can be erected at the corner of the dolly body (2), which facilitates assembly. The bottom portion can be composed of, for example, a pair of vertical plate-shaped bottom members (214) attached to the inner surfaces of the protruding corner portion and the inside corner portion of the vertical tubular portion (211) with bolts and nuts, respectively. (See FIG. 14).
The top plate includes a long top plate (22a) that is passed to the middle part of the length of the vertical frame material (21a) on the left and right outer sides, and horizontal frame materials (21b) on the front and rear outer sides, and inside these. The length of the intermediate horizontal frame material (21b) located is included with the short top plate (22b) that is handed over to the middle part. Each top plate (22a) (22b) is fixed to the upper surface of the required frame material (21a) (21b) by, for example, a rivet.
Each caster mounting plate (23) has a substantially rectangular shape when viewed from a plane, and is mounted on the frame (2) by bolts and nuts. Each caster mounting plate (23) constitutes the bottom of the caster housing recess (24).
Each of the above frame materials (21a) (21b) (21c), top plate (22a) (22b), and caster mounting plate (23) that make up the dolly body (2) are formed of light metal profiles. It is preferably formed of a profile made of an aluminum alloy, which is lightweight, strong, and has excellent workability and corrosion resistance.
The configuration of the bogie body is not limited to the above mode and can be changed as appropriate.

The casters (3) have a horizontal base plate (31) provided on the upper part thereof, which is fixed to the lower surface of the caster mounting plate (23) with bolts and nuts, so that the casters (3) are attached to the four corners of the lower surface of the trolley body (2). It is installed (see Figures 2-4). Further, each caster (3) is swingably attached with a lever-type stopper (33) that prevents the wheel (32) from rotating (see FIGS. 1, 3 and the like).
The number, arrangement, structure, and mounting means of the casters are not limited to the above aspects and can be changed as appropriate.

The push rod (4) is made of a vertical profile into which the lower end can be inserted into the insertion holes (2a) at the four corners of the dolly body (2). The material of the push rod (4) is not particularly limited, but is preferably made of a light metal shape material, and more preferably made of an aluminum alloy shape material.
More specifically, as shown in FIG. 5 and the like, the push rod (4) has four side walls (41) (42) (43) (44) on the front, back, left and right, and has a groove in the corner portion on the protruding corner side. It is a hollow shape having a concave portion (45) and a chamfered portion (46) having a convex arc shape at a corner portion on the inside corner side. The inner side wall (41) in the front-rear direction of the push rod (4) is formed with a fitting recessed groove (4a) having a substantially U-shaped cross section that opens inward in the front-rear direction. Further, the inner side wall (43) in the left-right direction of the push rod (4) is formed with a fitting concave groove (4a) having a substantially U-shaped cross section that opens inward in the left-right direction. Inside the push rod (4), an internal expansion groove (47) for accommodating nuts is formed in a portion between the two fitting recesses (4a) and the groove-shaped recess (45) on the protruding corner side, respectively. ing. Further, screw mounting portions (48) having a substantially C-shaped cross section are formed inside the chamfered portion (46) and in the groove-shaped recesses (45), respectively.
Generally, the push rod is composed of a single pipe or the like, but in the case of the push rod (4) of this embodiment, the end portion (fitting convex portion) (5a) of the side panel (5) (horizontal member) described later. ) Is formed, so that it is not necessary to use a support member such as the push rod described in Patent Document 1, so that the number of parts is reduced and the cost is reduced. It can be suppressed. Further, since the push rod (4) of this embodiment does not have a convex portion that presses the hand when held by hand, it is easy to hold and is excellent in handleability.
The lower end of the push rod (4) is inserted into the insertion holes (2a) at the four corners of the bogie body (2), and together with the spacer plate (7) and the corner guide member (7) described later, a total of four sets. It is detachably fixed to the vertical tubular part (211) of the corner connecting material (21c) by bolts and nuts.
An end cap (4b), which is substantially hexagonal when viewed from a plane, is attached to the upper end of the push rod (4) with a tapping screw, thereby blocking the upper opening of the push rod (4).

The cross member is composed of vertical side panels (5) in this embodiment. The side panel (5) is made of a hollow profile that is long in the front-rear or left-right direction, preferably a hollow profile made of light metal, and more preferably a hollow profile made of an aluminum alloy.
More specifically, the side panel (5) has a vertical inner wall (51) and outer wall (52), as well as a horizontal upper wall (53) and lower wall (54), as well as its interior. It also has two horizontal reinforcing walls (55) and (56) above and below (see FIG. 7).
The side panels (5) are attached to the push rods (4) that are adjacent to each other in the front-rear and left-right directions, one by one (five in this case) side by side, and these side panels (5) are used to hold the side panels (5). The front, rear, left and right side walls (50) are configured. Therefore, even when a small article is placed on the dolly body (2), there is no risk of the article spilling out like a side wall made of a mesh panel. The uppermost side panel (5) is the rising part of the push rods (4) that are adjacent to each other in the front-rear or left-right direction within the range where the four push rods (4) can be firmly connected to secure the strength as a hanging carriage. It may be stopped at an arbitrary height position in the upper part or the middle part of the height, and in this embodiment, it is handed over to a position slightly lower than the upper end of the adjacent push rods (4). The uppermost side panel (5) can be replaced with, for example, a horizontal tubular hollow profile. The side panel (5) below the top side panel (5) can be omitted in whole or in part, thereby placing, for example, a long article on the trolley body (2). It is also possible to carry it. Further, the side panel (5) below the uppermost side panel (5) can be changed to a mesh panel or the like.
As shown in detail in FIG. 7, a screw is screwed from below to the lower edge of the side panel (5), more specifically to the center of the length of the lower wall (54), and the head of the screw is attached. The fitting protrusion (5b) is formed by the portions. On the other hand, a fitting hole (5c) into which a fitting protrusion (5b) consisting of a screw head can be fitted into the upper edge of the side panel (5), more specifically, the central part of the length of the upper wall (53). Is formed. With the above configuration, the connection strength between the side panels (5) arranged one above the other is increased, and the rigidity of the side wall (50) is increased. The fitting hole (5c) of the uppermost side panel (5) is closed by a cap (5d) fitted in the hole (5c). The fitting protrusion (5b) and the fitting hole (5c) may be formed on the upper and lower edges of the side panel (5) so as to be upside down from the above configuration.
In the case of this embodiment, the fitting convex portion (5a) formed by the end portion of the side panel (5) is fitted into the fitting concave groove (4a) of the push rod (4) facing the side panel (5), and the rivet (R) is formed. It is fixed to the push rod (4) by the rivet (see FIG. 6). As a result, the portion of the four push rods (4) excluding the upper end is firmly connected and integrated by the front, rear, left and right side panels (5), so that the article is loaded. The load-bearing strength required to lift the dolly (1A) can be obtained.

The trolley lifting connecting metal fitting (6) is used to connect one end of a chain (C), a wire rope, or the like when lifting the trolley (1A). In this embodiment, the connecting fitting comprises a shackle (6). The pin (62) (or bolt) of the shackle (6) is a horizontally penetrating insertion hole (not shown) that extends diagonally above the push rod (4), avoiding the two mating recesses (4a). It is inserted (see FIG. 6). The insertion hole is preferably formed at a height position so as not to interfere with the push rod (4) when the U-shaped main body (61) of the shackle (6) is rotated upward.
The connecting bracket for lifting the carriage is not limited to the shackle (6) as described above, and can be changed as appropriate.

Corner guides (7) for stacking are provided at the four corners of the dolly body (2).
The corner guide portion is composed of a vertical corner guide member (7) having an L-shaped cross section. The corner guide member (7) is attached to the protruding corner side portion of the corner connecting material (21c) of the bogie body (2) via a vertical spacer plate (25) having an L-shaped cross section, and is formed by a push rod (4). Along with the lower end, it is attached in a hanging shape by bolts and nuts.
As shown in FIG. 8, when a plurality of trolleys (1A) are stacked one above the other, the trolley main body of the upper trolley (1A) is attached to the upper end of the four push rods (4) of the lower trolley (1A). The lower surface of the corner connecting material (21c) at the four corners of (2) is placed, but if it is left as it is, the upper and lower carts (1A) may shift in the horizontal direction. Therefore, if the stacking corner guides (7) are provided in a hanging shape at the four corners of the trolley body (2) as described above, the corner guides (7) at the four corners of the upper trolley (1A) can be formed. Safety during stacking because the horizontal relative movement of the stacked trolleys (1A) is prevented by being brought into contact with or close to the upper end of each push rod (4) of the lower trolley (1A) from the outside. Sex is ensured.
The corner guide portion may be formed of the corner guide member (7) as described above, or may be integrally provided with the corner frame material (21c) of the bogie body (2) itself.

According to the trolley (1A) of the first embodiment, the lower end portions of the push rods (4) are fixed to the four corners of the trolley main body (2), and the upper end of the rising portions of the four push rods (4). Since the parts other than the parts are connected and integrated by the front, rear, left and right side panels (5), the load capacity required to lift the dolly (1A) with the goods loaded on the dolly body (2) is assured. Obtained in.
Then, one end of, for example, a chain (C) or a wire rope is connected to the trolley lifting connecting metal fitting (6) on the upper part of each push rod (4), and the other end is hooked on a crane lifting hook or the like. In this state, the dolly (1A) can be lifted in a stable state by a lifting means such as a crane.
Further, in the case of the dolly (1A), a fitting concave groove (4a) for connecting a fitting convex portion formed of an end portion (5a) of the side panel (5) is formed on each push rod (4). Therefore, it is not necessary to use a support member like the transport trolley described in Patent Document 1, so that the number of parts can be reduced accordingly. Moreover, according to the carriage (1A), the fitting structure of the push rod (4) and the side panel (5) is simplified.
Therefore, according to the above-mentioned trolley (1A), it can be used as a hanging trolley without any trouble, and the manufacturing cost can be suppressed, so that it can be provided at a relatively low cost.
Further, in the case of the above-mentioned trolley (1A), since each component is made of aluminum alloy, the weight can be reduced while ensuring the load-bearing strength required for the suspension trolley, so that the movement burden is greatly reduced. Handleability is improved.

[Second Embodiment]
9 to 13 show a dolly according to a second embodiment of the present invention.
The trolley (1B) according to this embodiment is substantially the same as the trolley (1B) of the first embodiment shown in FIGS. 1 to 8 except for the following points.
That is, in the carriage (1B) of this embodiment, panel fixing levers (8) are arranged in both ends of each side panel (5).
The panel fixing lever (8) has a shape that is substantially crank-shaped at the middle portion of the length when viewed from a flat surface, so that it can come into contact with the inner surface of the inner side wall (51) of the side panel (5). It is swingable in the horizontal direction around the inwardly convex fulcrum (8a) provided in the middle part of the length.
The panel fixing lever (8) is formed at one end of the through hole (51a) formed in the inner side wall (51) of the side panel (5) to form a fitting recess (4a) of the push rod (4). It has an engaging protrusion (8b) that is inserted into an engaging hole (4c) formed on the inner surface, and is formed on the outer wall (52) of the side panel (5) at the other end. It has an operating protrusion (8c) that projects outward from the side panel (5) through the through hole (52a).

Further, in both ends of the side panel (5), the engaging convex portion (8b) is inserted into the engaging hole (4c), and the operating convex portion (8c) is projected to the outside of the side panel (5). A spring (biasing member) (9) that urges the panel fixing lever (8) in the swinging direction is arranged.
The spring (9) has one end of the panel fixing lever (8) fitted to the spring holding protrusion (8d) provided at one end of the panel fixing lever (8), and one end and the side of the panel fixing lever (8). It is interposed between the panel (5) and the outer wall.

According to the carriage (1B) of the second embodiment, the fixing operation and the fixing release operation between the push rod (4) and the end portion of the side panel (5) are easily performed by the panel fixing lever (8). be able to.
That is, for example, the end portion (5a) of the side panel (5) is placed in the fitting recessed groove (4a) of the hand push rods (4) adjacent to each other in the front-rear or left-right direction, and the panel fixing lever (8) is placed with one finger. While pressing the operation convex part (8c), fit it from above. Then, when the end portion (5a) of the side panel (5) reaches a predetermined height position, when the finger is released from the operation convex portion (8c), the panel fixing lever ( 8) is swung in a predetermined direction, and the engaging protrusion (8b) of the panel fixing lever (8) is inserted into the engaging hole (4c) of the push rod (4). As a result, the end portion (5a) of the side panel (5) is fixed to the push rod (4). On the other hand, when releasing the fixed state and removing the side panel (5) from the push rod (4), the reverse operation of the above may be performed.
Therefore, the trolley (1B) of this embodiment is preferably used when, for example, there are relatively many opportunities to attach / detach all or part of the side panels (5) depending on the type of loaded articles, the transportation method, and the like. Can be done.

[Third Embodiment]
FIG. 14 shows a dolly according to a third embodiment of the present invention.
The trolley (1C) according to this embodiment is a flat trolley which is the trolley (1A) of the first embodiment shown in FIGS. 1 to 8 or the trolley (1B) of the second embodiment shown in FIGS. 9 to 13. It is changed to the form used as.
That is, the illustrated trolley (1C) is, from the trolley (1A) (1B) of the first or second embodiment, the trolley lifting connecting metal fitting (6), the side panel (5) and the push rod (4), and The corner guide member (7) and the spacer plate (25) are removed.
Although not shown, the bogie body (2) can be removed by removing the bogie lifting connecting bracket (6) and the side panel (5) from the bogie (1A) (1B) of the first or second embodiment. Of course, it is also possible to form a push cart in which push rods (4) are erected at the four corners of the above. In this case, some of the four push rods (4) may be removed.
Further, by removing the bogie lifting connecting metal fitting (6) from the bogie (1A) (1B) of the first or second embodiment, the outer peripheral portion of the bogie main body (2) becomes the front, rear, left and right side walls (50). It can also be used as a trolley with an enclosure surrounded by. In this case, the side panels (5) forming a part of the side walls (50) of the front, rear, left and right side walls (50) may be removed.
As is clear from the above, according to the trolley of the present invention, it can be suitably used as a hanging trolley (1A) (1B), as well as a flat trolley (1C), a push trolley, and a trolley with an enclosure. It can be easily changed and used, and it is extremely easy to use.

[Fourth Embodiment]
15 to 19 show a dolly according to a fourth embodiment of the present invention.
The dolly (1D) according to this embodiment is substantially the same as the dolly of the first embodiment shown in FIGS. 1 to 8 except for the following points.
That is, the bogie (1D) of this embodiment is provided with a lid plate (10) that is substantially square when viewed from a plane, which is placed across the uppermost side panels (horizontal members) (5) in the front, rear, left, and right directions. There is. The lid plate includes a lid plate main body (10a) made of a plate material such as resin or metal, and a grid-like reinforcing frame (10b) joined to the back surface of the lid plate main body (10a). The four corners of the lid plate (10) are cut out in an L shape when viewed from a plane so as not to interfere with the upper parts of the four push rods (4).

The upper end of the lid plate fixing bar (11) is swingably connected to the front and rear edges of the lid material (10) at the intermediate positions of their lengths. In this embodiment, the lid plate fixing bar (11) is made of a shape member having a substantially U-shaped cross section that opens outward in the front-rear direction, and an upper end portion thereof is provided on the front-rear edge portion of the lid material (10). It is hinged to the connecting part (10c). At the lower end of each lid plate fixing bar (11), a hook portion (11a) that is hooked to the front and rear edges of the lower surface of the bogie body (2) is formed so as to project inward in the front-rear direction. .. The lid plate fixing bar (11) may be attached to the left and right edges of the lid material (10) in place of or in addition to the front and rear edges of the lid material (10). ..

Further, the carriage (1D) of this embodiment is a lock capable of preventing the lid plate fixing bar (11) from swinging in a direction in which the hook portion (11a) is separated from the front and rear edges of the lower surface of the carriage body (2). It has the means.
The locking means consists of a U-shaped hook (12) attached at a position below the connecting portion (10c) at the front and rear edges of the lid plate (10) and a padlock (13) hooked on the U-shaped hook (12). Become. The tip side portion of the U-shaped hook (12) protrudes to the outside of the lid plate fixing bar (11) through a vertically long slit (not shown) formed at the upper end of the lid plate fixing bar (11). It is designed to be made to.
The locking means is not limited to the above configuration and can be changed as appropriate.

According to the trolley (1D) of this embodiment, the article loaded on the trolley body (2) can be covered by the lid plate (10), so that damage or deterioration of the loaded article is effectively suppressed. To. Further, according to the dolly (1D), the lid plate (10) can be locked by the lid material fixing bar (11) and the locking means (12) (13), which is excellent in theft prevention. The effect is also obtained.

The present invention is a trolley for loading and transporting articles, and can be particularly suitably used as a hanging trolley.

(1A) (1B) (1C) (1D): Bogie
(2): Bogie body
(3): Caster
(4): Push rod
(4a): Fitting recess (fitting recess)
(4c): Engagement hole
(50): Side wall
(5): Side panel (horizontal material)
(5a): Fitting convex part (edge of side panel)
(5b): Fitting protrusion
(5c): Fitting hole
(51): Inner wall
(51a): Through hole
(52): Outer wall
(52a): Through hole
(6): Connecting bracket for lifting the dolly
(7): Stack corner guide
(8): Panel fixing lever
(8a): Support point
(8b): Engagement convex part
(8c): Operation convex part
(9): Spring (biasing member)
(10): Lid plate
(11): Bar for fixing the lid plate
(11a): Hook part
(12): U-shaped hook (locking means)
(13): Padlock (locking means)

Claims (7)

A flat dolly body that is approximately square when viewed from a plane and has insertion holes that open upward at the four corners.
With multiple casters attached to the underside of the dolly body,
Four push rods whose lower end is inserted into each insertion hole of the dolly body and fixed to the dolly body,
Of the rising parts of the push rods that are adjacent to each other in the front, back, left and right, the front, back, left and right horizontal members that are passed between at least the upper parts or between the middle parts of the length,
It is equipped with a connecting bracket for lifting the dolly that is attached to the top of each push rod.
One of the fitting concave portion and the fitting convex portion to be fitted to each other is formed in the front-rear direction inner portion and the left-right inner portion facing the end portion of the horizontal member of each push rod, and the other is the respective horizontal support. A trolley that is formed at both ends of the material and has the ends of the horizontal member fixed to the push rod so that the fitting state of the fitting concave portion and the fitting convex portion is maintained. The trolley according to claim 1, wherein each of the front, rear, left, and right horizontal members is composed of vertical side panels, and each side wall of the front, rear, left, and right is formed by one side panel or a plurality of side panels arranged vertically. A fitting concave groove having a substantially U-shaped cross section is formed over the entire length of the inner portion in the front-rear direction and the inner portion in the left-right direction facing the end of the side panel in each push rod so that the fitting convex portion consisting of the end of the side panel can be fitted. Has been formed and
The side panel is hollow, and the panel fixing levers are arranged in both ends of the side panel.
The panel fixing lever is swingable in the horizontal direction around a fulcrum provided in the middle part of the length so that it can come into contact with the inner surface of the inner side wall of the side panel, and the inner side wall of the side panel is provided at one end thereof. It has an engaging protrusion that is inserted into the engaging hole formed on the inner surface of the fitting concave groove through the through hole formed in, and is formed on the outer wall of the side panel at the other end. It has an operation convex part that can be projected to the outside of the side panel through the through hole.
Further, an urging member that urges the panel fixing lever in the swing direction in which the engaging convex portion is inserted into the engaging hole and the operating convex portion is projected outward from the side panel in both ends of the side panel. The trolley according to claim 2, wherein is arranged. At the upper edge of the side panel, one of a fitting protrusion and a fitting hole that are fitted to each other when a plurality of side panels are arranged one above the other is formed, and the other is a side panel. The trolley according to claim 2 or 3, which is formed on the lower edge portion. When a plurality of bogies are stacked up and down on the four corners of the bogie body, the upper end of each push rod of the lower bogie is abutted or brought close to each other from the side, and the stacked bogies move relative to each other in the horizontal direction. The trolley according to any one of claims 1 to 4, wherein a corner guide portion for stacking that can prevent the trolley is provided in a hanging shape. The lid plate, which is approximately square when viewed from the plane, is placed across the top horizontal members in the front, back, left, and right.
The upper end is swingably connected to the front and rear edges or the left and right edges of the lid plate, and the lower end has a hook that can be hooked to the front and rear edges or the left and right edges of the lower surface of the bogie body. The bar for fixing the lid plate of the book and
Any one of claims 1 to 5, further comprising a locking means capable of preventing the lid plate fixing bar from swinging in a direction in which the hook portion deviates from the front-rear edge portion or the left-right edge portion of the lower surface of the carriage body. The dolly described in. It is a push rod that is erected at the four corners of the dolly body, which is roughly square when viewed from the plane of the dolly, and the lower end is inserted into the insertion holes formed so as to open upward at the four corners of the dolly body. It is made of a vertical profile, and is fitted at the end of the horizontal member to hold the horizontal member to the front-rear and left-right adjacent hand-push rods at the front-rear direction inner part and the left-right direction inner part. A push rod for a trolley in which a fitting recess or a fitting convex portion to be fitted with a joint convex portion or a fitting concave portion is formed over the entire length.

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