Multipurpose flatcar

Abstract

To provide a multipurpose flatcar that can load a wide variety of cargos including wide large machines etc. by taking full advantage of the width direction of the multipurpose flatcar without being interfered with a loader / unloader.SOLUTION: A multipurpose flatcar comprises: a wheel; a bogie frame for rotatably holding the wheel; a loading platform having a notch part and rotatably holding the bogie frame; a flatcar frame mounted on the loading platform; a loader / unloader stored on the notch part of the loading platform; and a drive mechanism for switching the loader / unloader into a storage state or an expansion state. When the loader / unloader is in the storage state, the loader / unloader and the flatcar frame form a flat surface.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a multi-purpose carriage.

Background Art

[0002] A multi-purpose carriage capable of traveling on a railway track by loading a load such as a rail or a sleeper is known. The multi-purpose carriage is provided with a loader capable of loading and unloading a load such as a rail or a sleeper.

[0003] In the multi-purpose carriage described in Patent Document 1, a plurality of loaders are provided at both ends in the width direction of the multi-purpose carriage. However, since each loader is a large machine, in the structure described in Patent Document 1, the load interferes with the loader, so it is not possible to load a variety of loads including large machines with a wide width.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention has been made under such a background, and an object of the present invention is to provide a multi-purpose carriage capable of loading a variety of loads including large machines with a wide width by fully utilizing the width direction of the multi-purpose carriage without interference with the loader.

Means for Solving the Problems

[0006] In order to solve the above problems and achieve such an object, the present invention proposes the following means. A first aspect of the present invention includes a wheel, a carriage that rotatably holds the wheel, a load receiving frame that rotatably holds the carriage and has a notch, a gantry provided on the load receiving frame, a loader stored in the notch of the load receiving frame, and a drive mechanism that switches the loader from a stored state to a deployed state. When the loader is in the stored state, the loader and the gantry form a flat surface, which is a multi-purpose carriage.

[0007] According to the first aspect of the present invention, when the loader is in the stored state, the loader and the gantry form a flat surface, so that various types of loads, including wide and large machines, can be loaded without interference from the loader.

[0008] A second aspect of the present invention further includes a control unit and a plurality of loaders in the first aspect. The control unit can collectively switch the plurality of loaders between the stored state and the deployed state.

[0009] According to the second aspect of the present invention, since the control unit can collectively control a plurality of loaders between the stored state and the deployed state, a small number of people can handle the storage and deployment of the loaders.

[0010] A third aspect of the present invention includes a lower arm rotatably held by the load receiving frame, an upper arm rotatably held with respect to the lower arm, and a rotation axis that can rotate the upper arm with respect to the lower arm at an angle substantially perpendicular in a plan view in the first or second aspect.

[0011] According to the third aspect of the present invention, the drive mechanism can switch the loader between the stored state and the deployed state.

[0012] A fourth aspect of the present invention is characterized in that, in the second aspect, the plurality of loaders are provided at both ends in the width direction of the load receiving frame with a space in the length direction of the load receiving frame.

[0013] According to the fourth aspect of the present invention, since a plurality of loading and unloading machines are provided at intervals in the length direction of the load receiving platform frame, it is possible to load and unload long loads such as rails.

[0014] A fifth aspect of the present invention is, in the fourth aspect, when a plurality of the loading and unloading machines provided at both ends in the width direction of the load receiving platform frame are in a retracted state, the control unit sets a plurality of the loading and unloading machines provided on the other end side in the width direction in a deployed state, and when a plurality of the loading and unloading machines provided on one end side in the width direction are in a deployed state, the control unit controls the plurality of the loading and unloading machines so that a plurality of the loading and unloading machines provided on the other end side in the width direction are in a retracted state.

[0015] According to the fifth aspect of the present invention, it is possible to perform loading and unloading operations without interference between a plurality of loading and unloading machines provided at both ends in the width direction of the load receiving platform frame.

[0016] A sixth aspect of the present invention is, in the fifth aspect, a plurality of the loading and unloading machines provided on the one end side in the width direction and a plurality of the loading and unloading machines provided on the other end side in the width direction are provided at the same position in the length direction of the load receiving platform frame.

[0017] According to the sixth aspect of the present invention, since the load receiving platform frame can have a bilaterally symmetric structure, a multi-purpose cart can have a stronger structure compared to the case where the load receiving platform frame does not have a bilaterally symmetric structure.

Effects of the Invention

[0018] According to the present invention, it is possible to provide a multi-purpose cart capable of loading a variety of loads including wide and large machines and the like without being interfered by the loading and unloading machines, by fully utilizing the width direction of the multi-purpose cart.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0020] Hereinafter, the multi-purpose cart 1 according to the first embodiment of the present invention will be described with reference to the drawings.

[0021] The multi-purpose cart 1 includes wheels 4, a cart 5 that rotatably holds the wheels 4, a load receiving frame 15 that rotatably holds the cart 5 and has a notch 11, a gantry 13 provided on the load receiving frame 15, a loading and unloading machine 3 stored in the notch 11 of the load receiving frame 15, and a drive mechanism for switching the loading and unloading machine 3 from the stored state to the deployed state. Here, the X direction shown in FIG. 1 is referred to as the traveling direction or the length direction of the multi-purpose cart 1 or the load receiving frame 15. Also, the Y direction shown in FIG. 1 is referred to as the width direction of the multi-purpose cart 1 or the load receiving frame 15. Further, the Z direction shown in FIG. 1 is referred to as the height direction of the multi-purpose cart 1 or the load receiving frame 15.

[0022] The wheel 4 is configured such that a pair of wheels 4 are connected by an axle (not shown). In the illustrated example, the bogie 5 rotatably holds two pairs of wheels 4. Note that the number of wheels 4 held by the bogie 5 is not limited to two pairs, and may be one pair or three pairs or more.

[0023] The load receiving frame 15 is a substantially rectangular structure and rotatably holds the bogie 5 about the Z-axis in FIG. 1 as the rotation center. Since the load receiving frame 15 is a core structure of the multi-purpose bogie 1, for example, it is firmly constructed by assembling I-beams, channel steels, and steel plates by welding. The load receiving frame 15 is provided with a notch 11 capable of storing the later-described loading and unloading machine 3. Here, the notch 11 is shown in FIG. 7(a). On the load receiving frame 15, a pedestal 13 on which rails or sleepers (not shown) can be loaded is provided. A plurality of combined rectangular aoris 2 are provided on the pedestal 13 to prevent the loaded objects on the pedestal 13 from falling off the pedestal 13. A horizontal plate 14 is provided on the side surface of the load receiving frame 15. Here, the loaded objects are not limited to rails or sleepers, and include various machines, devices, tools, etc. that may be used for rail or sleeper replacement work, recovery work of old rails or old sleepers, laying work of new rails or new sleepers, etc.

[0024] A control unit 12 is provided on the lower surface of the load receiving frame 15. Details of the control unit 12 will be described later. Couplers 6 are provided at the front end and the rear end in the length direction of the load receiving frame 15 and are connectable to other vehicles.

[0025] The load receiving frame 15 is equipped with a plurality of loading and unloading machines 3. The plurality of loading and unloading machines 3 are provided at both ends in the width direction of the load receiving frame 15 with a space in the length direction of the load receiving frame 15. In the example shown in FIGS. 1 to 4, a total of six loading and unloading machines 3 are provided at both ends in the width direction of the load receiving frame 15 with a space in the length direction of the load receiving frame 15. Note that the number of the loading and unloading machines 3 is not limited to six. The plurality of unloading machines 3 can be switched between the stored states shown in Figs. 1, 2(a), (b), and (c) and the deployed states shown in Figs. 3, 4(a), (b), and (c). As shown in Figs. 1, 2(a), (b), and (c), and Figs. 5(a) and (b), in the stored state, the unloading machine 3 is stored in the notch 11 of the load receiving table frame 15. The unloading machine 3 includes a lower arm 9 rotatably held by the load receiving table frame 15, an upper arm 8 rotatably held by the lower arm 9, a hook 7 provided at the tip of the upper arm 8, a rotating shaft 10 that can rotate the upper arm 8 to an angle forming a substantially right angle with respect to the lower arm 9 in plan view, and a piston (not shown) that raises the lower arm 9 from the stored state and tilts it from the deployed state to the stored state. Among these, the lower arm 9, the upper arm 8, the rotating shaft 10, and the piston are referred to as a drive mechanism. Therefore, the drive mechanism can switch the unloading machine 3 between the stored state and the deployed state. Although a hydraulic piston is suitable as the piston, it is not necessarily limited to a hydraulic piston, and an electric piston may also be used. Here, the hook 7 is movable in the longitudinal direction of the upper arm 8 in the deployed state of the unloading machine 3. That is, in the deployed state of the unloading machine 3 shown in Fig. 3, the hook 7 is movable in the width direction of the load receiving table frame 15 (multi-purpose carriage 1). Further, the hook 7 is movable in the height direction of the multi-purpose carriage 1 in the deployed state of the unloading machine 3 shown in Fig. 3.

[0026] As shown in FIGS. 6(a) and 6(b), the lower arm 9 is held by the load receiving base frame 15 so as to be rotatable along the XZ plane about the Y axis with two plate-like members kept parallel. By being pushed by a piston (not shown), the lower arm 9 rotates and rises along the XZ plane about a rotation axis (not shown) parallel to the Y axis from the stored state shown in FIGS. 5(a) and 5(b) to the deployed state shown in FIGS. 7(a) and 7(b), whereby the unloading machine 3 is switched from the stored state to the deployed state. In the deployed state of the unloading machine 3, as shown in FIGS. 7(a) and 7(b), the lower arm 9 rises so as to intersect the load receiving base frame 15 at a substantially perpendicular angle, and at the same time, the upper arm 8 is held at a position where it extends substantially orthogonally to the lower arm 9 and substantially parallel to the length direction of the load receiving base frame 15. The upper arm 8 is also held so as to be rotatable along the XZ plane about the Y axis with respect to the lower arm 9. After reaching the state shown in FIGS. 7(a) and 7(b), with the rotation axis 10 parallel to the Z axis as the rotation center, the upper arm 8 is rotated toward the opposite side in the width direction of the load receiving base frame 15 along the XY plane until it forms a substantially perpendicular angle with respect to the lower arm 9 in plan view, whereby the unloading machine 3 reaches the deployed state as shown in FIGS. 3 and 4(a), 4(b), and 4(c). The operation of rotating the upper arm 8 with respect to the lower arm 9 to form a substantially perpendicular angle in the XY plane with the rotation axis 10 as the rotation center may be performed manually or automatically.

[0027] In the deployed state, by hanging a rail or a sleeper (not shown) on the hook 7 of the unloading machine 3 and raising and lowering it in the height direction and moving it in the width direction of the load receiving base frame 15, unloading work of the multi-purpose carriage 1 such as a rail or a sleeper from the gantry 13 and loading work of the rail or the sleeper onto the gantry 13 can be performed. Here, a plurality of unloading machines 3 are provided at both ends in the width direction of the load receiving base frame 15 with an interval in the length direction of the load receiving base frame 15. Therefore, it is possible to unload long loads such as rails.

[0028] As shown in FIGS. 1, 2(a), 2(b), 2(c), 5(a) and 5(b), the unloader 3 forms a flat surface with the gantry 13 in the retracted state. In other words, in the retracted state of the unloader 3, the upper surface of the upper arm 8 of the unloader 3 forms a flat surface with the gantry 13. Therefore, in the retracted state of the unloader 3, as shown in FIG. 2(a), the sum of the widths of the gantry 13, the unloader 3 provided at one end side (minus side in the Y direction) in the width direction of the load receiving frame 15, and the unloader 3 provided at the other end side (plus side in the Y direction) in the width direction of the load receiving frame 15 can be made equal to the maximum width of the multi-purpose cart 1. In the prior art, the unloader 3 never reached a retracted state where it formed a flat surface with the gantry 13. Therefore, according to the multi-purpose cart 1 of this embodiment, in the retracted state of the unloader 3, the load loaded on the gantry 13 does not interfere with the unloader 3, so a variety of loads including large and wide machines can be loaded.

[0029] Here, as shown in FIG. 2(a), the plurality of unloaders 3 provided at one end side in the width direction of the load receiving frame 15 and the plurality of unloaders 3 provided at the other end side in the width direction of the load receiving frame 15 are provided at the same position in the length direction of the load receiving frame 15. That is, the positions of the plurality of notches 11 in which the plurality of unloaders 3 are stored in the load receiving frame 15 are at the same position in the length direction of the load receiving frame 15 on the one end side and the other end side in the width direction. That is, the load receiving frame 15 has a bilaterally symmetric structure. The load receiving frame 15 is a member that holds the loading and unloading machine 3. The loading and unloading machine 3 is a structure that has a large weight by itself, and as described above, it performs the loading and unloading operations of a load such as a rail that has a large weight. Therefore, a large load is applied to the load receiving frame 15 that holds the loading and unloading machine 3. If a plurality of loading and unloading machines 3 provided on one end side in the width direction of the load receiving frame 15 and a plurality of loading and unloading machines 3 provided on the other end side in the width direction of the load receiving frame 15 are not provided at the same position in the length direction of the load receiving frame 15 and the load receiving frame 15 does not have a bilaterally symmetric structure, the loads applied to the load receiving frame 15 from the plurality of loading and unloading machines 3 are applied at different positions between one end side and the other end side in the width direction in the length direction of the load receiving frame 15. Therefore, the load applied to the load receiving frame 15 from the loading and unloading machine 3 acts in a direction that twists the load receiving frame 15, and there is a possibility that the load receiving frame 15 may be damaged such as cracked due to metal fatigue. On the other hand, according to the bilaterally symmetric load receiving frame 15 as in the present embodiment, it is possible to prevent the load applied to the load receiving frame 15 from the plurality of loading and unloading machines 3 from acting in a direction that twists the load receiving frame 15. Therefore, the strength of the load receiving frame 15 can be increased, and the life of the multi-purpose cart 1 can be extended.

[0030] A control unit 12 is provided on the lower surface of the load receiving frame 15. By the control of the control unit 12, it is possible to switch a plurality of loading and unloading machines 3 collectively from the stored state to the deployed state and from the deployed state to the stored state. When a plurality of loading and unloading machines 3 provided at both ends in the width direction of the loading platform frame 15 are in the stored state, the control unit 12 sets a plurality of loading and unloading machines 3 provided on the other end side in the width direction to the deployed state, and when a plurality of loading and unloading machines 3 provided on one end side in the width direction are in the deployed state, the control unit 12 sets a plurality of loading and unloading machines 3 provided on the other end side in the width direction to the stored state to control the plurality of loading and unloading machines 3. That is, as shown in FIGS. 3 and 4, when a plurality of loading and unloading machines 3 provided on one end side in the width direction of the loading platform frame 15 are in the stored state, the control unit 12 controls the plurality of loading and unloading machines 3 so that a plurality of loading and unloading machines 3 provided on the other end side in the width direction are in the deployed state. Although not shown, when a plurality of loading and unloading machines 3 provided on one end side in the width direction are in the deployed state, the control unit 12 controls the plurality of loading and unloading machines 3 so that a plurality of loading and unloading machines 3 provided on the other end side in the width direction are in the stored state. By the control unit 12 controlling the plurality of loading and unloading machines 3 in this way, the plurality of loading and unloading machines 3 provided at both ends in the width direction of the loading platform frame 15 can perform loading and unloading operations without interfering with each other. In addition, since the control unit 12 can collectively control the plurality of loading and unloading machines 3 between the stored state and the deployed state, the work related to storing and deploying the loading and unloading machines 3 can be performed by a small number of workers. For example, the control unit 12 can be activated by remote operation to collectively control the plurality of loading and unloading machines 3 between the stored state and the deployed state. Or a switch may be provided on the control unit 12 to collectively control the plurality of loading and unloading machines 3 between the stored state and the deployed state by operating the switch.

[0031] The control unit 12 includes a processor such as a CPU (Central Processing Unit) and a memory. The processor executes arithmetic processing for executing the functions of the control unit 12. The memory stores a rewritable program in which the functions to be executed by the CPU are described. The control unit 12 may implement these functions using hardware (including circuitry) such as an LSI (Large Scale Integration), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a GPU (Graphics Processing Unit). Alternatively, the functions of the control unit 12 may be implemented by the cooperation of software and hardware.

[0032] As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and designs and the like within the scope not departing from the gist of the present invention, as well as combinations of embodiments and variations, are also included.

[0033] Here, in the above description, the meanings of substantially right angle, substantially parallel, and substantially rectangular shape do not necessarily have to be exactly right angle, parallel, and rectangular shape. It means that a deviation of about 2° to 3° from a right angle, a deviation of about 2° to 3° from parallel, and a deviation of about 2° to 3° of opposite sides of a rectangle are allowed.

Explanation of Reference Numerals

[0034] 1 Multipurpose carriage 2 Octopus 3 Loading and unloading machine 4 Wheel 5 Carriage 6 Coupler 7 Hook 8 Upper arm 9 Lower arm 10 Rotation axis 11 Notch 12 Control unit 13 Mounting base 14 Horizontal plate 15 Load-receiving frame

Claims

1. Wheels and A dolly that rotatably holds the wheels; A load-receiving frame that rotatably holds the dolly and has a notch; A platform provided on the loading platform; A loader that is stored in the notch of the loading platform; A drive mechanism for switching the unloader from a stored state to an deployed state, A multipurpose trolley characterized in that, when the loader is in a stored state, the loader and the platform form a flat surface.

2. A multipurpose trolley as described in claim 1, further comprising a control unit and a plurality of the loading / unloading machines, wherein the plurality of the loading / unloading machines can be switched collectively between a stored state and an deployed state by control of the control unit.

3. The multipurpose trolley described in claim 1 or 2, characterized in that the drive mechanism comprises a lower arm rotatably held on the loading platform frame, an upper arm rotatably held relative to the lower arm, and a rotation shaft capable of rotating the upper arm at an angle that is approximately perpendicular to the lower arm in a planar view.

4. 3. The multipurpose trolley according to claim 2, wherein the plurality of unloaders are provided at both ends of the width direction of the loading / unloading frame at intervals in the length direction of the loading / unloading frame.

5. The control unit controls the multiple loaders provided at both ends of the width direction of the loading and unloading frame so that when the multiple loaders provided at one end in the width direction are in a stored state, the multiple loaders provided at the other end in the width direction are in an deployed state, and when the multiple loaders provided at one end in the width direction are in an deployed state, the multiple loaders provided at the other end in the width direction are in a stored state.

6. A multipurpose trolley as described in claim 5, characterized in that the multiple loading / unloading machines provided at one end of the width direction and the multiple loading / unloading machines provided at the other end of the width direction are provided at the same position in the longitudinal direction of the loading / unloading frame.

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