Container cart

Abstract

To improve efficiency of transportation and installation work of a load having a large dimension / area in a plan view in an installation attitude.SOLUTION: A base portion 2, tilt frame bodies 3A and 3B having a placement portion 31 on which a load is placed and a support structure 32 provided perpendicular to the placement portion 31 and being rotatably attached to the base portion 2, and a detachable frame body 4 detachably engaged with the support structure 32, wherein the tilt frame bodies 3A and 3B rotate with respect to the base portion 2 between a state in which the placement portion 31 is horizontal and a state in which the placement portion 31 is vertical, when the detachable frame body 4 is lifted in the vertical state of the placing part 31, the engagement of the support structure 32 and the detachable frame body 4 is released, and the cargo is lifted together with the detachable frame body 4.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a container cart, and more particularly to a container cart suitable for use when transporting ceiling units for air conditioning equipment, for example. [Background technology]

[0002] A stackable cargo transport cart is known that is used as a cart for carrying and transporting relatively large materials and equipment, in which side panels erected around the cart body are configured to be foldable onto the cart body, stacking brackets are attached near the four corners of the cart body, and each stacking bracket has an actual stacking engagement portion at its lower end that engages with the upper edge of the side panel of the lower cart when the carts are stacked with the side panels assembled, and an empty stacking support portion at its upper end that supports each stacking bracket of the upper cart when the carts are stacked with the side panels folded (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-088965 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, the dimensions / area of ​​a ceiling unit for an air conditioner in a plan view when installed on a ceiling are larger than the dimensions / area when viewed from the side. Therefore, the unit is transported in an upright position relative to the installation position, then tilted sideways at the installation location to the installation position, and then lifted up and attached to the ceiling. This requires equipment or machinery (e.g., a crane) to tilt the ceiling unit from its upright position during transportation, and also requires equipment or machinery (e.g., a lift) to lift the tilted ceiling unit up to the ceiling. For this reason, loads (in other words, materials and equipment) whose dimensions / area when installed on a ceiling are larger than the dimensions / area when viewed from the side, such as a ceiling unit for an air conditioner, require multiple types of equipment and machinery for transportation to the installation site and for installation / installation work at the installation site. This requires a great deal of effort and hinders work efficiency.

[0005] Therefore, an object of the present invention is to provide a container cart that can improve the efficiency of transporting and installing loads that have large dimensions / area in a plan view in the installed position. [Means for solving the problem]

[0006] In order to solve the above problems, the container trolley of the present invention may have a base portion, a loading portion for loading cargo and a support structure arranged perpendicular to the loading portion, a tilting frame body rotatably attached to the base portion, and a detachable frame body that engages freely with the support structure, wherein the tilting frame body rotates with respect to the base portion between a state in which the loading portion is horizontal and a state in which the loading portion is vertical, and when the detachable frame body is lifted with the loading portion in a vertical state, the engagement between the support structure and the detachable frame body is released and the cargo is lifted together with the detachable frame body.

[0007] In the container truck according to the present invention, the tilting frame bodies may be provided as a pair facing each other in the direction of rotation relative to the base portion and rotate in opposite directions.

[0008] The container truck according to the present invention may be provided with a locking mechanism that is interposed between the pair of tilting frame bodies and that restricts or allows rotation of the tilting frame bodies.

[0009] The container trolley according to the present invention may be provided with a locking mechanism that is interposed between the base portion and the tilting frame body and that restricts or allows rotation of the tilting frame body.

[0010] The container truck according to the present invention may be provided with a biasing means interposed between the base portion and the tilting frame body. [Effects of the Invention]

[0011] According to the container trolley of this invention, the tilting frame body rotates relative to the base body between a horizontal state and a vertical state in which the loading section is placed, and when the detachable frame body is lifted while the loading section is placed in a vertical state, the engagement between the support structure and the detachable frame body is released.Therefore, cargo / equipment and materials that have large dimensions / area in a plan view in the installed position can be transported in an upright position perpendicular to the installed position, and the tilting frame body can be used to lay the cargo / equipment and materials on its side to place them in the installed position.In addition, the cargo / equipment and materials can be lifted together with the detachable frame body, making it possible to improve the efficiency of transporting and installing the cargo / equipment and materials.

[0012] According to the container trolley of this invention, when the tilting frame bodies are installed as a pair facing each other in the direction of rotation relative to the base portion, it is possible to further improve the efficiency of transporting cargo / materials and equipment in particular.

[0013] According to the container trolley of this invention, if a locking mechanism is provided between a pair of tilting frame bodies, the tilting frame bodies can be prevented from rotating unexpectedly, thereby ensuring safety.

[0014] According to the container trolley of this invention, if a locking mechanism is provided between the base portion and the tilting frame body, the tilting frame body can be prevented from rotating unexpectedly, thereby ensuring safety.

[0015] According to the container trolley of this invention, if a biasing means is provided between the base portion and the tilting frame body, a resistance force is exerted when the tilting frame body rotates from a horizontal position to a vertical position when the loading portion is placed, and a biasing force is exerted when the tilting frame body rotates from a vertical position to a horizontal position when the loading portion is placed, thereby ensuring safety when the tilting frame body rotates and making it easier to handle. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is an XY plane view showing the structure of a container truck according to an embodiment of the present invention, illustrating a state in which a pair of tilting frame bodies are closed and the platform is horizontal. FIG. [Figure 2] FIG. 2 is an XZ plane view showing the structure of the container cart of FIG. [Figure 3] FIG. 2 is a YZ plane view showing the structure of the container cart of FIG. [Figure 4] FIG. 2 is an XY plane view showing the structure of the base part of the container cart of FIG. [Figure 5] 5 is an XZ plane view showing the structure of the base part of FIG. 4. FIG. [Figure 6] 5 is a YZ plane view showing the structure of the base portion of FIG. 4. [Figure 7] 2 is an XY plane view showing the structure of a pair of tilting frame bodies of the container bogie of FIG. 1. FIG. [Figure 8] 8 is an XZ plane view showing the structure of the tilting frame body of FIG. 7. [Figure 9] 8 is a YZ plane view showing the structure of a pair of tilting frame bodies in FIG. 7. [Figure 10] 2A and 2B are diagrams showing the structure of the detachable frame body of the container cart of FIG. 1, where (A) is a perspective view of the XY plane, and (B) is a view of the XZ plane. [Figure 11] FIG. 10 is a diagram showing the structure of the second locking mechanism, and is a YZ plane view showing the mounting section in a horizontal position. [Figure 12] 12 is a diagram showing the structure of the second locking mechanism in FIG. 11, and is an XZ plane view showing a state in which the placing portion is horizontal and the tip of the restricting portion protrudes from the support portion. FIG. [Figure 13] 13 is an XZ plane view showing a state in which the tip of the restriction portion is retracted toward the support portion from the state shown in FIG. 12. FIG. [Figure 14] 14 is an XZ plane view showing a state in which the tilting frame body is tilted and the mounting portion is vertical, following the state shown in FIG. 13. FIG. [Figure 15] 15 is an XZ plane view showing a state in which the tip of the restriction portion protrudes from the support portion from the state shown in FIG. 14. FIG. [Figure 16] 12 is a diagram showing the structure of the second locking mechanism in FIG. 11, and is a YZ plane view showing the mounting section in a vertical position. FIG. [Figure 17] FIG. 2 is a diagram showing an example of use of the container cart of FIG. 1, and is an XY plane view showing a state in which a load is placed on each of a pair of tilting frame bodies. [Figure 18] 18 is a YZ plane view showing a state in which the lock bar is pulled up following the state shown in FIG. 17. FIG. [Figure 19] 19 is a YZ plane view showing a state in which the tilting frame body is tilted and the mounting portion is vertical, following the state shown in FIG. 18. [Figure 20] 20 is a YZ plane view showing a state in which the load is lifted together with the detachable frame body from the state shown in FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be described below based on the illustrated embodiments. In the following description, as shown in each drawing, the X-axis direction, the Y-axis direction, and the Z-axis direction are defined along the axes of a three-dimensional Cartesian coordinate system. The arrow of the Z-axis points upward, and the direction opposite to the arrow of the Z-axis points downward.

[0018] 1 to 10 are diagrams showing the structure of a container cart 1 according to an embodiment of the present invention. Note that Fig. 1 does not show a gas spring 6 provided as a biasing means interposed between the base portion 2 and the tilting frame bodies 3A, 3B.

[0019] The container trolley 1 in this embodiment has a base portion 2, tilting frame bodies 3A, 3B which have a loading portion 31 on which a load is placed and a support structure 32 which is arranged perpendicular to the loading portion 31 and which are rotatably attached to the base portion 2, and a detachable frame body 4 which can be detached and attached to the support structure 32. The tilting frame bodies 3A, 3B rotate relative to the base portion 2 between a state in which the loading portion 31 is horizontal and a state in which the loading portion 31 is vertical, and when the detachable frame body 4 is lifted when the loading portion 31 is vertical, the engagement between the support structure 32 and the detachable frame body 4 is released and the load is lifted together with the detachable frame body 4.

[0020] The container cart 1 according to the embodiment mainly has a base portion 2, a pair of tilting frame bodies 3A, 3B, a pair of detachable frame bodies 4, and four wheels 5. The material of each part constituting the container cart 1 is not limited to a specific material, and an appropriate material (for example, metal) is appropriately selected for each part, taking into consideration, for example, the required strength.

[0021] The base portion 2 is configured to have a rectangular shape when viewed in the XY plane (in the example shown in the figure, the base portion 2 is configured to have a rectangular shape with the longitudinal direction along the X-axis direction).

[0022] The base portion 2 has a rectangular frame formed by a pair of longitudinal rod members 21 whose respective axes run along the X-axis direction and are spaced apart from each other in the Y-axis direction, and a pair of short rod members 22 whose respective axes run along the Y-axis direction and are spaced apart from each other in the X-axis direction so as to connect each of the ends of the pair of longitudinal rod members 21 in the X-axis direction.

[0023] The base portion 2 also has reinforcing rod members 23 (in the example shown in the figure, two rods spaced apart from each other in the X-axis direction) that are spanned between a pair of longitudinal rod members 21 along the Y-axis direction, and spanning rod members 24 (in the example shown in the figure, two rods spaced apart from each other in the Y-axis direction) that are spanned between a pair of short rod members 22 along the X-axis direction.

[0024] The members constituting the base portion 2 are joined together by, for example, welding or by being fastened with fastening members such as screws.

[0025] Wheels 5 are attached to the lower surface side of the base portion 2 via wheel receiving members 25.

[0026] The wheel support members 25 are arranged as a pair on the underside of the pair of longitudinal rod members 21 and the spanning rod members 24, with their respective longitudinal directions aligned with the Y-axis direction, and spaced apart in the X-axis direction so as to support each of the pair of longitudinal rod members 21 and the spanning rod members 24 at positions near both ends in the X-axis direction.

[0027] A wheel 5 is attached to each of the pair of wheel receiving members 25 at a position near both ends in the Y-axis direction on the underside thereof. Specifically, the wheels 5 may be, for example, free wheels that can rotate around the Z-axis (i.e., casters that can rotate horizontally), or fixed wheels that cannot rotate horizontally and whose running direction is fixed in the X-axis direction. Note that, although the wheels 5 in the example shown in the figure do not have stoppers, wheels that have stoppers may also be used.

[0028] The wheel 5 is attached to the wheel receiving member 25 by being fastened with a fastening member such as a screw via a top plate 51 (in other words, a mounting base), for example.

[0029] A pivot shaft support 26 is provided at each of the pair of short rod members 22 near both ends in the Y-axis direction, facing each other in the Y-axis direction and erected along the Z-axis direction, and a pivot shaft 27 is provided at a position near the upper end of each pivot shaft support 26, extending along the X-axis direction and protruding toward the inside of the base portion 2 (and also toward the inside of the container trolley 1).

[0030] In addition, a support piece 28 is provided near the upper end of each pivot shaft support 26, extending along the Y-axis direction and protruding toward the outside of the base portion 2 (and also toward the outside of the container trolley 1), and a base portion side support shaft 29 is provided on each support piece 28, extending along the X-axis direction and protruding toward the outside of the base portion 2.

[0031] The tilting frame bodies 3A, 3B are attached to the base part 2 as a pair facing each other in the Y-axis direction. Below, the tilting frame bodies 3A, 3B will be described based on the postures shown in Figures 7 to 9, which correspond to the state in which the pair of tilting frame bodies 3A, 3B are closed and the surface of the rectangular frame that constitutes the mounting part 31 is horizontal, as shown in Figures 1 to 3.

[0032] The tilting frame bodies 3A and 3B each have a mounting portion 31 and a pair of support structures 32 that are provided at both ends of the mounting portion 31 in the X-axis direction and face each other in the X-axis direction.

[0033] The mounting portion 31 has a rectangular frame formed by a pair of longitudinal rod members 311 whose respective axes run along the X-axis direction and are spaced apart from each other in the Y-axis direction, and a pair of short rod members 312 whose respective axes run along the Y-axis direction and are spaced apart from each other in the X-axis direction so as to connect each of the ends of the pair of longitudinal rod members 311 in the X-axis direction.

[0034] The mounting portion 31 also has reinforcing rod members 313 (three rods spaced apart from each other in the X-axis direction in the illustrated example) that are bridged between the pair of longitudinal rod members 311 along the Y-axis direction.

[0035] Although not provided in the example shown in the figure, a flat panel may be provided on the upper surface side of the placement portion 31 .

[0036] The support structure 32 has a support rod 321 that stands along the Z-axis direction from the outer end of the short rod member 312 that constitutes the loading section 31 in the Y-axis direction with respect to the container cart 1, and a protection rod 322 that stands along the Z-axis direction from a position closer to the center of the short rod member 312 in the Y-axis direction. The support structure 32 is, in other words, installed perpendicular to the surface of the rectangular frame that constitutes the loading section 31.

[0037] The members constituting the tilting frame bodies 3A, 3B are joined together by, for example, welding or by being fastened with fastening members such as screws.

[0038] The hook receiving portion 33 is provided at a position near the center in the Z-axis direction of the support rod 321. The hook receiving portion 33 is provided so as to form an elongated through-hole with its longitudinal direction in the Z-axis direction when viewed from the XZ plane, and both end faces of the hook receiving portion 33 open toward the Y-axis direction.

[0039] The support rod 321 has a U-shaped cross section perpendicular to the axial direction, and is arranged so that the opening of the U-shape faces outward relative to the container trolley 1, and a rotating support pillar 8 is provided inside the U-shape.

[0040] The rotating support column 8 is rotatably mounted relative to the support rod 321 by a rotating shaft 81, and is stored inside the U-shaped support rod 321 and rotates between a position in which it is stored along the longitudinal direction / axial direction of the support rod 321 (for example, the position shown in Figures 3 and 9), and a position in which it protrudes from the inside of the support rod 321 and is perpendicular to the longitudinal direction / axial direction of the support rod 321 (the position shown in Figures 19 and 20).

[0041] A tilting frame body side support shaft 35 that extends along the X axis direction and projects outward from the container cart 1 is provided at a position close to the center of the protection rod 322 in the Z axis direction.

[0042] The support structure 32 also has a first connecting rod member 323 that is spanned along the Y-axis direction between the support rod 321 and the protective rod 322 at the upper end position of the protective rod 322, a second connecting rod member 324 that is spanned along the Y-axis direction between the support rod 321 and the protective rod 322 at a position closer to the center of the protective rod 322 in the Z-axis direction, and a rotating bearing rod member 325 that is spanned along the Y-axis direction between the support rod 321 and the protective rod 322 at a position closer to the lower ends of the support rod 321 and the protective rod 322.

[0043] A through hole 34 is formed in the rotation bearing rod member 325 at a position where the rotation shaft 27 passes through when the tilting frame bodies 3A, 3B are disposed on the base portion 2.

[0044] The tilting frame bodies 3A and 3B are disposed on the base part 2, and the rotation shaft 27 on the base part 2 side penetrates and engages with the through-holes 34 on the tilting frame bodies 3A and 3B side. As a result, the tilting frame bodies 3A and 3B rotate with respect to the base portion 2 between a posture in which the surface of the rectangular frame constituting the mounting portion 31 is along the XY plane and the longitudinal direction / axial direction of the support rod 321 and the protective rod 322 is along the Z axis direction (the posture shown in FIGS. 1 to 3 and 17 and 18; referred to as the "state in which the mounting portion 31 is horizontal"; also referred to as the "state in which the support structure 32 is vertical"), and a posture in which the surface of the rectangular frame constituting the mounting portion 31 is along the XZ plane and the longitudinal direction / axial direction of the support rod 321 and the protective rod 322 is along the Y axis direction (the posture shown in FIGS. 19 and 20; referred to as the "state in which the mounting portion 31 is vertical"; also referred to as the "state in which the support structure 32 is horizontal"). Note that the gas spring 6 is not shown in FIG. 17.

[0045] The tilting frame bodies 3A, 3B are provided as a pair facing each other in the direction of rotation relative to the base part 2 (that is, the Y-axis direction in the example shown in the figure), and rotate in opposite directions.

[0046] A biasing means is provided between the base portion 2 and the tilting frame bodies 3A, 3B. For example, a gas spring can be used as the biasing means.

[0047] One end of the gas spring 6 is rotatably connected to a base part side support shaft 29 provided on the support piece 28 of the base part 2, and the other end is rotatably connected to a tilting frame body side support shaft 35 provided on the protective rod 322 of the tilting frame bodies 3A and 3B.

[0048] The gas spring 6 exerts a resistance force between the base portion 2 and the tilting frame bodies 3A, 3B when the mounting portion 31 rotates from a horizontal state to a vertical state, and also exerts a biasing force when the tilting frame bodies 3A, 3B rotate from a vertical state to a horizontal state.

[0049] In the container cart 1, the pair of tilting frame bodies 3A, 3B are closed and the loading section 31 is horizontal, and then a load (in other words, materials and equipment; reference numeral 9 in FIGS. 17 to 20) is placed on the loading section 31 and transported. In order to prevent the tilting frame bodies 3A, 3B from unexpectedly rotating while the load is being transported, a locking mechanism is provided for keeping the loading section 31 horizontal with the pair of tilting frame bodies 3A, 3B closed.

[0050] In the example shown in the figure, the locking mechanism 7 includes a lock bar 71 that is attached at its base end to the protective rod 322 so as to be rotatable along the YZ plane relative to the protective rod 322 and has a bent tip portion 711, and is provided at a position near the upper end of the protective rod 322 of one of the pair of tilting frame bodies 3B, and a locking portion 72 into which the tip portion 711 of the lock bar 71 can be inserted, is provided at a position near the upper end of the protective rod 322 of the other tilting frame body 3A.

[0051] The locking mechanism 7 is provided between the pair of tilting frame bodies 3A, 3B, and when the tip portion 711 of the locking bar 71 is inserted into the locking portion 72, the rotation of the tilting frame bodies 3A, 3B is restricted / prevented, the pair of tilting frame bodies 3A, 3B are closed, and the placing portion 31 is maintained in a horizontal state. When the tip portion 711 of the locking bar 71 is pulled out of the locking portion 72, the rotation of the tilting frame bodies 3A, 3B is permitted, and the placing portion 31 can change from a horizontal state to a vertical state.

[0052] In addition to or instead of the locking mechanism 7, a second locking mechanism 7B (not shown in Figures 1 to 10 and Figures 17 to 20; see Figures 11 to 16) may be provided between the base portion 2 and each of the tilting frame bodies 3A, 3B to close the pair of tilting frame bodies 3A, 3B to maintain the mounting portion 31 in a horizontal state, or to rotate the tilting frame bodies 3A, 3B to maintain the mounting portion 31 in a vertical state.

[0053] The second locking mechanisms 7B are provided corresponding to each of the pair of tilting frame bodies 3A, 3B, and the second locking mechanisms 7B for the tilting frame body 3A and the second locking mechanisms 7B for the tilting frame body 3B are provided between the pivot shaft supports 26 that are arranged opposite each other in the Y-axis direction (see Figures 11 and 16).

[0054] The second locking mechanisms 7B are provided at the ends of the base 2 in the X-axis direction (or at the sides of the tilting frame bodies 3A and 3B in the X-axis direction), and may be provided on only one side in the X-axis direction (in which case, two mechanisms are provided in total), or on both sides in the X-axis direction (in which case, four mechanisms are provided in total). In the following explanation, of the two second locking mechanisms 7B shown in Figures 11 and 16, the second locking mechanism 7B for the tilting frame body 3B (i.e., the second locking mechanism 7B on the left side in Figures 11 and 16) will be described.

[0055] The second lock mechanism 7B has a support portion 73, a restriction portion 74, and an operation portion 75.

[0056] The support part 73 is attached to the upper surface of the short rod member 22 of the base part 2. The support part 73 has four side panels (front, back, left and right) and is formed in a manner that the top is open (i.e., in the shape of a hollow, roughly rectangular pillar).

[0057] A pair of slits, each open at the top and penetrating in the Y-axis direction, spaced apart from each other in the X-axis direction are formed in one of a pair of side plates opposing each other in the Y-axis direction that make up the support part 73. Of the pair of slits, the one on the inside of the base part 2 (also, the inside with respect to the container cart 1) is called a first slit 731, and the one on the outside of the base part 2 (also, the outside with respect to the container cart 1) is called a second slit 732.

[0058] A pair of side plates that constitute the support portion 73 and are opposed to each other in the X-axis direction are each formed with a through-hole 733 that penetrates in the X-axis direction at a position near the upper end of each of the side plates.

[0059] The restricting portion 74 is formed in a round bar shape, and is disposed so as to slidably pass through the through-hole 733 of the support portion 73 with its axis direction aligned with the X-axis direction.

[0060] The operation unit 75 is formed in the shape of an elongated plate, and is fixed and attached to the restriction unit 74 with the plate surface oriented along the YZ plane. In the example shown in the figure, a through hole 751 is formed in a position near one end of the operation unit 75 in the longitudinal direction, and the restriction unit 74 is passed through the through hole 751 and welded to be fixed and attached to the restriction unit 74.

[0061] The operating portion 75 fits into the first slit 731 or the second slit 732 of the support portion 73 with its longitudinal direction aligned along the Y-axis direction, or rotates around the axis of the regulating portion 74 as the axis of rotation, disengaging from the first slit 731 or the second slit 732 of the support portion 73 and entering the top of the support portion 73 (which is open), thereby assuming a position with its longitudinal direction aligned along the Z-axis direction.

[0062] 12, when the mounting portion 31 is in a horizontal position and the operating portion 75 is fitted into the first slit 731 of the support portion 73 (i.e., the slit on the inside of the base portion 2), the tip end of the restricting portion 74 (i.e., the end on the inside of the base portion 2) protrudes from the support portion 73 along the X-axis direction and is located above the short rod member 312 of the mounting portion 31 of the tilting frame body 3B. This restricts / prevents rotation of the tilting frame body 3B, and the mounting portion 31 is maintained in a horizontal position.

[0063] From the state shown in Figure 12, as shown in Figure 13, the operating unit 75 rotates around the axis of the regulating unit 74 as the rotation axis, moves out of the first slit 731 of the support unit 73, enters the top of the support unit 73 (which is still open), and assumes a position where its longitudinal direction is along the Z-axis direction, and moves together with the regulating unit 74 toward the outside of the base unit 2 along the axial direction of the regulating unit 74 (i.e., the X-axis direction).

[0064] 14, the operating part 75 rotates around the axis of the restricting part 74 as the rotation axis and fits into the second slit 732 of the support part 73 (i.e., the slit on the outside of the base part 2). At this time, the tip end of the restricting part 74 (i.e., the end on the inside of the base part 2) retreats toward the support part 73 in the X-axis direction and is no longer positioned above the short rod member 312 of the mounting part 31 of the tilting frame body 3B. This allows the tilting frame body 3B to rotate, and the mounting part 31 can change from a horizontal state to a vertical state.

[0065] Then, when the mounting portion 31 is in a vertical position, the operating portion 75 rotates around the axis of the regulating portion 74 as the axis of rotation, moves out of the second slit 732 of the support portion 73, enters the top of the support portion 73 (which is still open), and assumes a position with its longitudinal direction aligned with the Z-axis direction, and moves together with the regulating portion 74 toward the inside of the base portion 2 along the axial direction of the regulating portion 74 (i.e., the X-axis direction).

[0066] 15 and 16, the operating part 75 rotates around the axis of the restricting part 74 as the rotation axis and fits into the first slit 731 of the support part 73 (i.e., the slit on the inside of the base part 2). At this time, the tip part of the restricting part 74 (i.e., the end part on the inside of the base part 2) protrudes from the support part 73 along the X-axis direction and is positioned below the support rod 321 of the support structure 32 of the tilting frame body 3B. This limits / prevents the rotation of the tilting frame body 3B, and the placement part 31 is maintained in a vertical state.

[0067] One detachable frame body 4 is provided for each of the pair of tilting frame bodies 3A, 3B. The following description of the detachable frame body 4 will be based on the position shown in Fig. 10 when the pair of tilting frame bodies 3A, 3B are closed and the surface of the rectangular frame that forms the mounting section 31 is horizontal, as shown in Figs. 1 to 3. Fig. 10 shows the detachable frame body 4 provided for the tilting frame body 3B.

[0068] The detachable frame body 4 has a first longitudinal rod member 41 and a second longitudinal rod member 42, each of which has its axis direction aligned with the X-axis direction and is spaced apart from each other in the Z-axis direction, and connecting rod members 43 (two in the example shown in the figure) that connect the first longitudinal rod member 41 and the second longitudinal rod member 42, each of which has its axis direction aligned with the Z-axis direction and is spaced apart from each other in the X-axis direction.

[0069] The members constituting the detachable frame body 4 are joined together by, for example, welding or by being fastened with fastening members such as screws.

[0070] A first hook 44 is provided at each of both ends of the first longitudinal bar member 41 in the X-axis direction, and a second hook 45 is provided at each of both ends of the second longitudinal bar member 42 in the X-axis direction.

[0071] The detachable frame body 4 is detachably engaged with the tilting frame bodies 3A, 3B by having the first hook 44 hooked onto the support rod 321 at an upper position of the first connecting rod member 323 of the tilting frame bodies 3A, 3B from the inside to the outside of the container trolley 1 and engaging therewith, and the second hook 45 hooked onto the hook receiving portion 33 provided on the support rod 321 of the tilting frame bodies 3A, 3B from the inside to the outside of the container trolley 1 and engaging therewith.

[0072] The container cart 1 described above is suitable for use when transporting, for example, a ceiling unit 9 for air conditioning equipment (however, the load transported by the container cart 1 is not limited to a ceiling unit for air conditioning equipment).

[0073] The ceiling unit 9 is attached to the ceiling and installed with the surface indicated by the symbol 91 in Figures 17 to 20 facing upward, and the dimensions / area when viewed from above in the installed position (i.e., the dimensions / area of ​​surface 91) are typically larger than the dimensions / area when viewed from the side.

[0074] When transporting a ceiling unit 9 using a container trolley 1, specifically, for example, as shown in Figure 17, a pair of tilting frame bodies 3A, 3B are each provided with a detachable frame body 4, and the pair of tilting frame bodies 3A, 3B are closed so that the mounting section 31 is horizontal (and the support structure 32 is vertical), and the ceiling unit 9 is placed on each of the mounting sections 31 of the tilting frame bodies 3A, 3B in an upright position perpendicular to the installation position (specifically, in an position where the surface 91 is along the XZ plane).

[0075] During transportation of the ceiling unit 9, the tip portion 711 of the lock bar 71 of the lock mechanism 7 is inserted into the engagement portion 72, the pair of tilting frame bodies 3A, 3B is closed, and the placement portion 31 is maintained in a horizontal state.

[0076] Then, the container cart 1 is moved to below the ceiling position where the ceiling unit 9 is installed, and then, as shown in Figure 18, the lock bar 71 of the locking mechanism 7 is rotated and the tip portion 711 is pulled up and removed from the engaging portion 72.

[0077] 19, the tilting frame body 3B is rotated about the rotation axis 27 until the mounting portion 31 is in a vertical state (and the support structure 32 is in a horizontal state). As a result, the ceiling unit 9 is in an installation position with the surface 91 facing upward and aligned along the XY plane.

[0078] At this time, the rotating support column 8 is pulled out from the support rod 321 and its tip touches the ground, thereby maintaining the mounting section 31 of the tilting frame body 3B in a vertical state. Furthermore, the detachable frame body 4 assumes an orientation along the XY plane, with the longitudinal direction / axial direction of the first longitudinal rod member 41 and the second longitudinal rod member 42 aligned along the X-axis direction and the longitudinal direction / axial direction of the connecting rod member 43 aligned along the Y-axis direction.

[0079] Furthermore, when the mounting portion 31 of the tilting frame body 3B is in a vertical position, the through hole formed by the hook receiving portion 33 of the tilting frame body 3B opens at both end faces in the Z-axis direction.

[0080] Next, the forks 10 of the forklift (main body not shown) are inserted below the detachable frame body 4 between a pair of opposing support structures 32 and at (approximately) the middle position in the X-axis direction of the detachable frame body 4.

[0081] Next, when the fork 10 moves upward and an upward force acts on the detachable frame body 4, the first hook 44 of the detachable frame body 4 moves away from the support rod 321 and disengages, and the second hook 45 is pulled out of the hook receiving portion 33 and disengages, and the ceiling unit 9 is lifted upward together with the detachable frame body 4, as shown in Figure 20.

[0082] Here, when the second locking mechanism 7B is provided, the tip of the regulating portion 74 (i.e., the inner end of the base portion 2) protrudes from the support portion 73 along the X-axis direction and is positioned below the support rod 321 of the support structure 32 of the tilting frame body 3B, and the operating portion 75 is then fitted into the first slit 731 of the support portion 73 (i.e., the inner slit of the base portion 2) (see Figures 15 and 16), so that when the detachable frame body 4 is lifted upward from the tilting frame body 3B, the rotation of the tilting frame body 3B is restricted / prevented and the mounting portion 31 is maintained in a vertical state.

[0083] Then, the ceiling unit 9 is mounted on the ceiling while it is still placed on the detachable frame body 4 supported from below by the forks 10.

[0084] According to the container trolley 1 of the embodiment, the tilting frame bodies 3A, 3B rotate relative to the base part 2 between a horizontal state and a vertical state of the loading section 31, and when the detachable frame body 4 is lifted while the loading section 31 is in a vertical state, the engagement between the support structure 32 and the detachable frame body 4 is released. Therefore, cargo / equipment and materials with large dimensions / area in a planar view in the installation position (e.g., ceiling unit 9) can be transported in an upright position perpendicular to the installation position, and the tilting frame bodies 3A, 3B can be used to lay the cargo / equipment and materials on their side to assume the installation position. In addition, the cargo / equipment and materials can be lifted together with the detachable frame body 4, making it possible to improve the efficiency of transporting and installing the cargo / equipment and materials.

[0085] According to the container trolley 1 of the embodiment, the tilting frame bodies 3A, 3B are mounted as a pair facing each other in the direction of rotation relative to the base portion 2, which makes it possible to further improve the efficiency of transporting cargo / materials and equipment in particular.

[0086] According to the container trolley 1 of the embodiment, a locking mechanism 7 is provided between the pair of tilting frame bodies 3A, 3B, which prevents the tilting frame bodies 3A, 3B from rotating unexpectedly, thereby ensuring safety.

[0087] According to the container trolley 1 of the embodiment, a biasing means (specifically, a gas spring 6) is provided between the base portion 2 and the tilting frame bodies 3A, 3B, so that a resistance force is exerted when the tilting frame bodies 3A, 3B rotate from a horizontal state to a vertical state of the mounting portion 31, and a biasing force is exerted when the tilting frame bodies 3A, 3B rotate from a vertical state to a horizontal state of the mounting portion 31, thereby ensuring safety when the tilting frame bodies 3A, 3B rotate and making handling easier.

[0088] The above describes an embodiment of the present invention, but the specific configuration is not limited to the above embodiment, and even if there are design changes within the scope of the present invention that do not deviate from the gist of the present invention, they are included in the present invention.

[0089] In other words, the key point of this invention is that the tilting frame body rotates relative to the base body between a horizontal and a vertical position of the mounting portion, and when the detachable frame body is lifted with the mounting portion in a vertical position, the engagement between the support structure and the detachable frame body is released and the load is lifted together with the detachable frame body; as long as the above key point can be realized, the specific structure of the trolley itself is not limited to a particular structure. [Explanation of symbols]

[0090] 1 container cart 2 Base 21 Longitudinal rod member 22 Short rod member 23 Reinforcing rod member 24 Crossbar 25 Wheel support member 26 Rotating shaft support 27 Rotating shaft 28 Shaft support piece 29 Base side support shaft 3A tilting frame body 3B tilting frame body 31 Placement section 311 Longitudinal rod members 312 Short rod member 313 Reinforcing rod member 32 Support structure 321 Support rod 322 Protective rod 323 First connecting rod member 324 Second connecting rod member 325 Rotating bearing rod member 33 Hook receiving part 34 Through hole 35 Tilting frame body side support shaft 4 Detachable frame body 41 first longitudinal rod member 42 second longitudinal rod member 43 Connecting rod member 44 First Hook 45 Second Hook 5 wheels 51 Top Plate 6 Gas Springs 7 Locking mechanism 71 Rock Bar 711 Tip part 72 Locking part 7B Second locking mechanism 73 Support part 731 First Slit 732 Second Slit 733 Through hole 74 Regulatory Department 75 Control section 751 Through hole 8 Rotating Support Column 81 Rotating shaft 9 Ceiling Unit 91 Upper surface in installation position 10 forks

Claims

1. A base portion; a tilting frame body having a mounting portion and rotatably attached to the base portion, the placement portion is positioned above the base portion in a horizontal state, and a load is placed on the placement portion; The tilting frame bodies are provided as a pair facing each other in the direction of rotation relative to the base portion and rotate in opposite directions to each other. A container truck characterized by:

2. a detachable frame body that is detachably engaged with the tilting frame body; 2. The container truck according to claim 1.

3. A locking mechanism is provided between the pair of tilting frame bodies to restrict or allow rotation of the tilting frame bodies.

2. The container truck according to claim 1.

4. a locking mechanism is provided between the base portion and the tilting frame body to restrict or allow rotation of the tilting frame body; 4. A container truck according to claim 1.

5. a biasing means interposed between the base portion and the tilting frame body; 5. A container truck according to claim 1.

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