Material handling equipment

Abstract

To provide a material conveyance device capable of conveying a heavy material with a simple structure.SOLUTION: Suspension parts 6A, 6B capable of suspending a material W1 are moved on upper surfaces 2Aa, 2Ba of a main body part 2A and a launching part 2B below a stand 2. Accordingly, the suspension parts 6A, 6B can be traveled in a longitudinal direction D1 while a load is supported by the main body part 2A and the launching part 2B with a simple structure even when a weight of the material W1 is increased by moving the suspension parts 6A, 6B on the upper surfaces 2Aa, 2Ba of the main body part 2A and the launching part 2B. As a result, the heavy material W1 can be conveyed with the simple structure.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a material transport device. [Background technology]

[0002] Conventionally, a material transport device for transporting materials is known, as described in Patent Document 1. The material transport device described in Patent Document 1 is equipped with a long platform. The platform is equipped with a main body part provided with a running part, and a hand-stretching part extending from an end side of the main body part. In this type of material transport device, materials are transported by suspending them from hanging parts provided on the underside of the long members of the main body part and the hand-stretching part. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-101492 A Summary of the Invention [Problem to be solved by the invention]

[0004] Here, there has been a demand for a material transport device that has a simple structure and is able to fully utilize the capacity of the hanging part to transport even heavier materials.

[0005] The present invention has been made to solve such problems, and has an object to provide a material transport device capable of transporting heavy materials with a simple structure. [Means for solving the problem]

[0006] The material transport device of the present invention comprises a stand having a long extending main body and a hand-stretching section that can be arranged to extend longitudinally from one longitudinal end of the main body, a running section connected to the main body of the stand, a lateral take-up section provided on the main body of the stand and capable of moving the stand laterally, and a hanging section provided movable longitudinally relative to the stand and capable of suspending materials below the stand, and the hanging section moves along the upper surfaces of the main body and the hand-stretching section.

[0007] In the material conveying device according to the present invention, the horizontal take-up section is provided on the main body. The hand-stretching section can extend in the longitudinal direction from one end of the main body in the longitudinal direction. Therefore, in the stage before the material is lowered from the hanging member at the position of the hand-stretching section, the angle of the main body in the horizontal plane can be adjusted using the horizontal take-up section. Therefore, the angle of the entire stand can be adjusted so that the position of the hand-stretching section matches the angle of the installation position. Here, the hanging section capable of hanging the material below the stand moves on the upper surfaces of the main body and the hand-stretching section. In this way, by the hanging section moving on the upper surfaces of the main body and the hand-stretching section, even if the weight of the material becomes heavy, the hanging section can be made to run in the longitudinal direction while the main body and the hand-stretching section support the load, despite the simple structure. As described above, heavy materials can be conveyed with a simple structure.

[0008] The hanging part may have a hanging member for hanging the material on the outer side in the lateral direction of the stand. In this case, the hanging part can hold the material on the outer side in the lateral direction of the stand and install the material on the outer side.

[0009] The hanging part may include a protruding member that protrudes outward from the stand in the horizontal direction to support the hanging member, and an expansion mechanism that expands and contracts the protruding member in the horizontal direction. In this case, the position of the hanging part can be adjusted with a simple configuration that only expands and contracts the protruding member in the horizontal direction with the expansion mechanism.

[0010] The hanging part may have a hanging member for hanging the material on the inner side in the lateral direction of the stand. In this case, the hanging part can hold the material on the outer side in the lateral direction of the stand and set the material on the outer side.

[0011] The stand may have a pair of elongated members arranged laterally, and the pair of elongated members may be provided with a displacement suppression mechanism that suppresses displacement of the pair of elongated members in the lateral direction. In this case, even when the hanging part is transporting a heavy material, the displacement suppression mechanism can suppress displacement of the pair of elongated members in the lateral direction.

[0012] The suspending part may include a rotation mechanism for rotating the suspended material in a horizontal plane, in which case the suspending part can place the material at an angle different from that at which it was transported.

[0013] A pair of running units may be provided side by side with respect to the main body, and the pair of running units may have a height adjustment mechanism for adjusting the height position of the main body. In this case, even when the ground is inclined laterally, the height adjustment mechanism adjusts the height of the main body on both lateral sides of the main body, thereby allowing the main body to be maintained in a horizontal state.

[0014] The stand may have a telescopic jack that extends or retracts the hand-extending portion relative to the main body. In this case, the length of the hand-extending portion relative to the main body can be adjusted with a simple configuration by repeatedly extending or retracting the telescopic jack.

[0015] The material conveying device further includes a hand-stretching support part that is provided at the end of the hand-stretching part opposite to the main body part in the longitudinal direction and supports the hand-stretching part, and the hand-stretching support part may have a slide mechanism that slides the hand-stretching part laterally while it is placed on the ground. In this case, the slide mechanism can finely adjust the lateral position of the hand-stretching part.

[0016] The material transport device further includes a hand-stretching support part that is provided at the end of the hand-stretching part opposite to the main body part in the longitudinal direction and supports the hand-stretching part, and the running part and the hand-stretching support part may have an extension mechanism that can extend and contract to contact the ground. In this case, by bringing the extension mechanism into contact with the ground according to the work process, the running part can be immobilized relative to the ground and the hand-stretching part can be supported by the hand-stretching support part.

[0017] The main body may include a rail that guides the hanging part in the longitudinal direction, and the hanging part may include a movable roller that runs along the rail and a reaction force generating mechanism that generates a reaction force against the movement of the movable roller rising up from the rail. In this case, the reaction force generated by the reaction force generating mechanism can suppress the floating up of the movable roller of the hanging part even when the weight of the material becomes heavy. Effect of the Invention

[0018] According to the present invention, it is possible to provide a material transport device capable of transporting heavy materials with a simple structure. [Brief description of the drawings]

[0019] [Figure 1] 1 is a side view showing a material transport device according to a first embodiment of the present invention. [Diagram 2] 1 is a plan view of a material transport device according to a first embodiment of the present invention. [Diagram 3] Fig. 3(a) is a side view showing a state in the middle of hand-stretching of the material transporting device, and Fig. 3(b) is a side view showing the hand-stretching state of the material transporting device. [Figure 4] FIG. 2 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 5(a) is a schematic enlarged cross-sectional view showing the state of the telescopic jack in the stage before the hand-extending portion is extended (the state shown in FIG. 1), and FIG. 5(b) is an enlarged cross-sectional view showing the state in which the telescopic jack has been extended from the state shown in FIG. 5(a). [Figure 6] FIG. 4 is an enlarged view of the displacement suppression mechanism as viewed from the longitudinal direction. [Figure 7] FIG. 4 is an enlarged view of the slide mechanism as viewed from the longitudinal direction. [Figure 8] FIG. 8(a) is a conceptual diagram showing the state of the traveling unit relative to the ground surface on which a cant has been formed, and FIGS. 8(b) and 8(c) are enlarged cross-sectional views showing the internal structure of the height adjustment mechanism. [Figure 9] 11A and 11B are plan views showing the operation of the rotation mechanism. [Figure 10]FIG. [Figure 11] FIG. 11(a) is a side view showing a material transporting apparatus according to the second embodiment, and FIG. 11(b) is a plan view of the material transporting apparatus according to the second embodiment of the present invention. [Figure 12] This is a view of the hanging part from the longitudinal direction. [Figure 13] FIG. 13 is a top view of the hanging position adjustment mechanism of the hanging portion. [Figure 14] 1 is an enlarged view of a reaction force generating mechanism as viewed from the longitudinal direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent elements are designated by the same reference numerals, and duplicated explanations will be omitted.

[0021] [First embodiment] FIG. 1 is a side view showing a material conveying device according to a first embodiment of the present invention. FIG. 2 is a plan view of the material conveying device according to the first embodiment of the present invention. FIG. 3(a) is a side view showing a state in the middle of hand-stretching of the material conveying device. FIG. 3(b) is a side view showing a state in which the material conveying device is hand-stretching. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1.

[0022] As shown in Figures 1 and 2, the material transporting device 100 is a device that suspends a material W1 and transports it to a predetermined position. The material transporting device 100 is equipped with a stand 2, swivel-type running parts 3A, 3B (running part, horizontal taking part), hanging parts 6A, 6B, and a hand-stretching support part 7. The material transporting device 100 travels on the ground.

[0023] The stand 2 is a long member that extends in the direction in which the material W1 is transported. The direction in which the stand 2 extends may be referred to as the "longitudinal direction D1". The horizontal direction perpendicular to the longitudinal direction D1 may be referred to as the "lateral direction D2". Here, in the longitudinal direction D1, the side in which the material W1 is transported may be referred to as the "front", and the opposite side may be referred to as the "rear". In addition, in the lateral direction D2, the side toward the center position of the material transport device 100 may be referred to as the "inside", and the side away from the center position may be referred to as the "outside".

[0024] The stand 2 includes a main body 2A having swivel-type running units 3A and 3B at both ends in the longitudinal direction D1, and a hand-stretching unit 2B that can be arranged to extend from the front end of the main body 2A in the longitudinal direction D1. The hand-stretching unit 2B can transition from a state housed in the main body 2A (the state in FIG. 1) to a hand-stretching state (the state in FIG. 3(b)) by stretching forward.

[0025] The main body 2A of the stand 2 includes a pair of long members 11 extending straight in the longitudinal direction D1 at both ends in the lateral direction D2. The long members 11 extend in the longitudinal direction D1 at least longer than the material W1. The long members 11 are arranged spaced apart from each other so as to be aligned in the lateral direction D2. The hand-extending section 2B of the stand 2 includes a pair of long members 12 extending straight in the longitudinal direction D1 at both ends in the lateral direction D2. The long members 12 extend in the longitudinal direction D1 at least longer than the material W1. Each long member 12 is arranged to be accommodated within each long member 11 in a manner that allows it to move in the longitudinal direction D1.

[0026] The configuration of the long members 11, 12 will be described in detail with reference to Fig. 4. As shown in Fig. 4, the long member 12 is made of a square material. The long member 11 is made of a pair of H-shaped steels 11A, 11B that hold the long member 12 by sandwiching it from both sides in the horizontal direction D2. A rail 14 is provided on the upper surface of the long member 12 that is exposed from the upper flanges of the H-shaped steels 11A, 11B. A rail 16 is provided on the upper surface of the H-shaped steel 11A on the outer side of the horizontal direction D2. The rails 14, 16 extend straight in the longitudinal direction D1.

[0027] As shown in FIG. 1, the swivel-type running units 3A and 3B are connected to both ends of the main body 2A of the gantry 2 in the longitudinal direction D1. The swivel-type running units 3A and 3B run on the ground in the longitudinal direction D1. This allows the entire gantry 2 to move in the longitudinal direction D1. The swivel-type running units 3A and 3B have a running unit 20 having a support part 21 and wheels 22. The support part 21 extends downward from the long member 11 of the main body 2A of the gantry 2. The wheels 22 are provided at the lower end of the support part 21 and contact the ground. The swivel-type running units 3A and 3B have the running units 20 for the long member 11 on both sides in the lateral direction D2. In addition, the swivel-type running units 3A and 3B have two sets of running units 20 in the longitudinal direction D1. Therefore, the swivel-type running units 3A and 3B each have four running units 20.

[0028] The wheels 22 can rotate around a rotation axis extending in the vertical direction. Therefore, the swivel-type running units 3A, 3B can change the direction of travel. For example, when the swivel-type running units 3A, 3B rotate 90° from the state shown in FIG. 1 (the state shown in FIG. 4), they can travel in the lateral direction D2. In this case, the entire platform 2 can move in the lateral direction D2. Therefore, the swivel-type running units 3A, 3B are provided on the main body 2A of the platform 2, and function as a lateral movement unit that can move the platform 2 in the lateral direction D2.

[0029] The swivel-type running units 3A and 3B have a telescopic mechanism 23 that can be extended and retracted to contact the ground. The telescopic mechanism 23 is, for example, a worm jack. The telescopic mechanism 23 is provided between the front running unit 20 and the rear running unit. When the telescopic mechanism 23 is retracted (as shown in FIG. 1), the lower end of the telescopic mechanism 23 is separated from the ground. In this case, the swivel-type running units 3A and 3B can run without being hindered by the telescopic mechanism 23. On the other hand, when the telescopic mechanism 23 is extended (as shown in FIG. 3(a) and (b)), the lower end of the telescopic mechanism 23 comes into contact with the ground. As a result, the main body 2A is fixed to the ground via the swivel-type running units 3A and 3B.

[0030] The configuration of the swivel-type running section 3B will be described in detail with reference to Fig. 4. The swivel-type running section 3A has the same configuration as the swivel-type running section 3B. The support section 21 of the traveling unit 20 includes, from the top, a beam member 26, a pillar member 27, a height adjustment mechanism 28, a drive section 29, a swivel shaft section 31, and a traveling drive mechanism 32.

[0031] The beam member 26 is a member that extends in the horizontal direction D2 below the long member 11 of the main body portion 2A and the long member 12 of the hand-stretched portion 2B, and supports these long members 11, 12. The pillar member 27 is a member that extends downward from the outer end of the beam member 26 in the horizontal direction D2. In this way, by moving the pillar member 27 to the outside in the horizontal direction D2, a wide space SP for hanging the material W1 can be secured between the pillar members 27 on both sides in the horizontal direction D2. The size of the space SP1 in the horizontal direction D2 is larger than the space SP2 between the H-shaped steel 11B of the long members 11 on both sides. The height adjustment mechanism 28 is provided at the lower end of the pillar member 27. The height adjustment mechanism 28 is a mechanism that adjusts the height position of the main body portion 2A from the ground. The detailed structure of the height adjustment mechanism 28 will be described later.

[0032] The drive unit 29 is provided at the lower end of the height adjustment mechanism 28. The swivel shaft unit 31 is a mechanism equipped with a rotating shaft (not shown) for rotating the wheels 22. The swivel shaft unit 31 is equipped with a rotating shaft extending in the vertical direction and a bearing unit for rotatably supporting the rotating shaft. The drive unit 29 applies a driving force for rotating the wheels 22 via the rotating shaft of the swivel shaft unit 31. A motor is housed inside the housing of the drive unit 29. The travel drive mechanism 32 is a mechanism for rotatably supporting the wheels 22 with a rotating shaft 32a and applying a driving force for travel to the wheels 22. The travel drive mechanism 32 has a motor and a transmission mechanism for transmitting the driving force of the motor to the wheels 22.

[0033] As shown in FIG. 1 and FIG. 2, the suspenders 6A, 6B are provided to be movable in the longitudinal direction D1 relative to the stand 2, and are mechanisms capable of suspending the material W1 below the stand 2. The suspenders 6A, 6B move on the upper surfaces 2Aa, 2Ba of the main body 2A and the hand-stretched portion 2B. The suspenders 6A, 6B move on the upper surface 2Aa of the main body 2A, and transfer from the main body 2A to the hand-stretched portion 2B to move on the upper surface 2Ba of the hand-stretched portion 2B. The suspenders 6A, 6B include a pair of moving parts 34, a connecting part 36, a pair of lifting parts 37, and a pair of hanging members 38. The pair of moving parts 34 are provided on the long members 11, 12 on both sides of the lateral direction D2, respectively, and move in the longitudinal direction D1 along the long members 11, 12. The connecting part 36 connects the pair of moving parts 34 to each other. The connecting parts 36 rise upward from each moving part 34 and extend in the horizontal direction D2. The lifting part 37 is a device that winds up and unwinds the hanging member 38. This allows the lifting part 37 to raise and lower the material W1. The lifting part 37 is provided on a part of the connecting parts 36 that extends in the horizontal direction D2. The hanging member 38 is a member that extends downward from the lifting part 37 and suspends the material W1. In this embodiment, the hanging member 38 suspends the material W1 on the inside of the stand 2 in the horizontal direction D2.

[0034] The configuration of the hanging part 6B will be described in detail with reference to FIG. 4. The hanging part 6A has the same configuration as the hanging part 6B. The moving part 34 includes a moving roller 34a for the main body part, a moving roller 34b for the hand-stretching part, and a base part 34c. The moving roller 34a for the main body part is disposed above the rail 16 of the main body part 2A, and the moving roller 34b for the hand-stretching part is disposed above the rail 14 of the hand-stretching part 2B. The moving roller 34a for the main body part is a roller that moves in the longitudinal direction D1 while being guided by the rail 16 of the main body part 2A. The moving roller 34b for the hand-stretching part is a roller that moves in the longitudinal direction D1 while being guided by the rail 14 of the hand-stretching part 2B. The moving roller 34b for the hand-stretching part comes into contact with the rail 14 when the hand-stretching part 2B moves to a position where it protrudes from the main body part 2A. As a result, the moving part 34 transfers from the main body part 2A to the hand-stretching part 2B. The base part 34c is a member that rotatably supports the main body part moving roller 34a and the hand-stretching part moving roller 34b.

[0035] The connecting portion 36 has a column portion 36a rising upward from the base portion 34c of each moving portion, and a beam portion 36b connecting the column portions 36c to each other. The beam portion 36b extends in the horizontal direction D2 at the position of the upper end of each column portion 36a. The lifting portion 37 may be configured by a known hoist or the like. The pair of lifting portions 37 are movable in the horizontal direction D2 along the beam portions 36b. This allows the lifting portion 37 to adjust the position at which the material W1 is suspended by the suspending member 38. The suspending member 38 extends downward from the lifting portion 37, and has a metal fitting 38a at its lower end for fixing to the material W1.

[0036] As shown in Fig. 1, the hand-stretching support part 7 is provided at the end 2Bb on the opposite side (front side) of the main body part 2A in the longitudinal direction D1 of the hand-stretching part 2B, and supports the hand-stretching part 2B. The hand-stretching support part 7 includes pillar members 41 extending downward from the long members 12 on both sides, and beam members 42 (see Fig. 2) extending in the lateral direction D2 and connecting the long members 12.

[0037] The hand-stretching support section 7 has an extension mechanism 43 that can extend and contract to come into contact with the ground. The extension mechanism 43 is, for example, a worm jack. When the extension mechanism 43 is contracted (as shown in FIG. 1), the lower end of the extension mechanism 43 is separated from the ground. In this case, the hand-stretching section 2B can move without being hindered by the hand-stretching support section 7. On the other hand, when the extension mechanism 43 is extended (as shown in FIG. 3(b)), the lower end of the extension mechanism 43 comes into contact with the ground. As a result, the hand-stretching section 2B is fixed to the ground via the hand-stretching support section 7.

[0038] 1 and 3, a procedure for transporting the material W1 and setting the material W1 by the material transport device 100 will be described. The setting position H (see FIG. 3) of the material W1 is one step lower than other positions.

[0039] First, a material receiving process is performed to receive the material W1 and suspend it by the suspenders 6A and 6B. In the material receiving process, as shown in FIG. 1, the telescopic mechanisms 23 and 43 are contracted to prevent contact with the ground. This allows the entire platform 2 to be moved in the longitudinal direction D1 and the lateral direction D2 by the swivel-type traveling units 3A and 3B. When the material W1 is disposed in the lateral direction D2 with respect to the material transport device 100, the swivel-type traveling units 3A and 3B rotate the wheels 22 toward the lateral direction D2. The swivel-type traveling units 3A and 3B travel in the lateral direction D2 to move the entire platform 2 to above the material W1. In addition, the suspenders 6A and 6B unwind the suspender member 38 to fix the material W1, and then wind up the suspender member 38 to lift the material W1. The swivel-type traveling units 3A and 3B travel in the lateral direction D2 to return the entire platform 2 to the transport location. This completes the material receiving process.

[0040] Next, the entire material conveying device 100 is moved forward in the longitudinal direction D1 to execute a material conveying process for conveying the material W1 to the installation position H. In this process, the wheels 22 of the swivel-type traveling units 3A, 3B are rotated toward the longitudinal direction D1 to travel in the longitudinal direction D1, and the entire platform 2 is moved in the longitudinal direction D1. When the platform 2 arrives just before the installation position H, it is stopped.

[0041] Next, an angle adjustment process is performed to adjust the angle of the gantry 2 in the horizontal plane to match the installation position H. In this process, the angle of the gantry 2 in the horizontal plane is adjusted to match the angle of the installation position H. This adjustment is performed by rotating the wheels 22 of the swivel-type running units 3A and 3B in the lateral direction D2. At this time, by making the driving direction and driving amount of the wheels 22 of the front swivel-type running unit 3B different from the driving direction and driving amount of the wheels 22 of the rear swivel-type running unit 3A, fine angle adjustment of the gantry 2 can be performed.

[0042] Next, as shown in FIG. 3, a hand-stretching process is performed in which the hand-stretching part 2B is stretched from the main body part 2A of the stand 2 toward the installation position H. At this time, before the hand-stretching part 2B is stretched, the telescopic mechanism 43 of the hand-stretching support part 7 at the tip of the hand-stretching part 2B is contracted to keep it away from the ground. On the other hand, before the hand-stretching part 2B is stretched, the telescopic mechanism 23 of the swivel-type running parts 3A and 3B is stretched to contact the ground. This fixes the main body part 2A to the ground. After that, the hand-stretching part 2B is stretched from the main body part 2A (FIG. 3(a)), and the tip of the hand-stretching part 2B is placed forward of the installation position H (FIG. 3(b)). At that position, the telescopic mechanism 43 of the hand-stretching support part 7 is stretched to support the lower end of the hand-stretching support part 7 on the ground.

[0043] 6, the hanging parts 6A, 6B are moved toward installation position H and transferred from the main body 2A to the hand-stretching part 2B, thereby executing a material vertical transfer process in which the material W1 is moved above the installation position H. In this process, the hanging parts 6A, 6B hanging the material W1 move toward the installation position H, transitioning from a state supported by the main body 2A to a state supported by the hand-stretching part 2B, and when the material W1 reaches above the installation position H, the movement of the hanging parts 6A, 6B is stopped.

[0044] Next, an installation process is performed to install the material W1. In this process, the hanging members 38 of the hanging parts 6A and 6B are unwound to lower the material W1 and install it at the installation position H. Then, the fixing between the hanging parts 6A and 6B and the material W1 is released.

[0045] After the above steps are completed, the telescopic mechanism 43 of the hand-stretching support unit 7 is retracted, and the hand-stretching unit 2B is retracted and stored in the main body unit 2A. Then, the telescopic mechanism 23 of the swivel-type running units 3A and 3B is retracted. The swivel-type running units 3A and 3B move in the longitudinal direction D1, and move the stand 2 to receive the next material W1.

[0046] When installing materials at installation position H on a linear travel path, the angle adjustment process is omitted from the above-mentioned processes.

[0047] Next, a more detailed configuration of the material transport device 100 will be described.

[0048] As shown in Fig. 1, the stand 2 has an extension jack 50 that extends and retracts the hand-extended portion 2B relative to the main body portion 2A. The extension jack 50 can adjust the amount by which the long member 12 of the hand-extended portion 2B protrudes from the long member 11 of the main body portion 2A. The extension jack 50 is provided for each of the long members 11 and 12 on both sides.

[0049] The detailed configuration of the telescopic jack 50 will be described with reference to FIG. 5. FIG. 5(a) is a schematic enlarged cross-sectional view showing the state of the telescopic jack 50 in the stage before the hand-extending portion 2B is extended (the state shown in FIG. 1). FIG. 5(b) is an enlarged cross-sectional view showing the state in which the telescopic jack 50 is extended from the state shown in FIG. 5(a). As shown in FIG. 5(a), the telescopic jack 50 includes a cylinder 51, a piston rod 52, and fixing parts 53 and 54. The cylinder 51 advances and retreats the piston rod 52 by hydraulic pressure. The rear end of the cylinder 51 is fixed to the long member 11 of the main body part 2A via the fixing part 53. The fixing part 53 is fixed inside the long member 11 at least rearward of the rear end 12a of the long member 12 of the hand-extending portion 2B. The fixing part 53 is fixed in a state in which it is disposed in the space between a pair of H-shaped steels 11A and 11B (see FIG. 4). The piston rod 52 is a member extending forward from the front end of the cylinder 51. The rear end of the piston rod 52 is connected to a piston (not shown) disposed in the cylinder 51. The front end of the piston rod 52 is fixed to the elongated member 12 of the hand-extending portion 2B via a fixing portion 54.

[0050] As shown in FIG. 5(b), when the piston in the cylinder 51 is pushed forward, the piston rod 52 is pushed forward from the front end of the cylinder 51. This causes the entire telescopic jack 50 to extend. Since the cylinder 51 is fixed to the main body 2A by the fixing part 53, the piston rod 52 is pushed forward, and the hand-stretching part 2B moves forward together with the fixing part 54. As a result, as shown in FIG. 3(a), the hand-stretching part 2B moves forward until the piston rod 52 is fully extended. After that, the fixing part 53 is released from the main body 2A. In addition, the cylinder 51 pulls back the piston rod 52, thereby contracting the telescopic jack 50. At this time, since the fixing part 54 is fixed to the hand-stretching part 2B, the fixing part 53 moves forward. The fixing part 53 is fixed to the main body 2A again at the position after the movement. Then, the telescopic jack 50 extends again, so that the hand-extending portion 2B moves further forward as shown in FIG. 5(b).

[0051] As shown in FIG. 1, the pair of elongated members 11 are provided with a displacement suppression mechanism 60 that suppresses displacement of the pair of elongated members 11 in the lateral direction D2. As shown in FIG. 2, the displacement suppression mechanism 60 includes a pair of moving parts 61 and a displacement suppression part 62. The moving parts 61 are parts that move in the longitudinal direction D1 along the respective elongated members 11. The displacement suppression part 62 is a part that extends in the lateral direction D2 to connect the pair of moving parts 61 to each other and suppresses displacement of the elongated members 11 in the lateral direction D2. The displacement suppression mechanism 60 is connected to the hanging part 6A, and moves in the longitudinal direction D1 in accordance with the movement of the hanging part 6A. As shown in FIG. 3(a), when the hanging part 6A runs through the main body part 2A, the displacement suppression mechanism 60 moves in the longitudinal direction D1 together with the hanging part 6A. As shown in FIG. 3(b), when the hanging part 6A and the displacement suppression mechanism 60 reach the front end of the main body part 2A, the hanging part 6A transfers to the hand-extending part 2B. At this time, the displacement suppression mechanism 60 is detached from the hanging part 6A and stops at that position. The detachment is performed, for example, by holding the displacement suppression mechanism 60 at a stopped position using a magnet or mechanism. When the hanging part 6A returns to the main body part 2A, it reconnects with the displacement suppression mechanism 60.

[0052] The detailed configuration of the displacement suppression mechanism 60 will be described with reference to FIG. 6. FIG. 6 is an enlarged view of the displacement suppression mechanism 60 as viewed from the longitudinal direction D1. As shown in FIG. 6, the moving part 61 is composed of moving rollers that rotate and move on the rails 16 of the respective long members 11. The moving part 61 has flanges on both sides in the lateral direction D2, thereby suppressing deviation in the lateral direction D2 relative to the rails 16. The displacement suppression part 62 has an extension jack 63, a pair of connecting members 64, and a pair of horizontal rollers 66. The extension jack 63 is a member that adjusts the length of the entire displacement suppression part 62 in the lateral direction D2. The connecting member 64 is a member that connects the outer end of the extension jack 63 in the lateral direction D2 and the moving part 61. The horizontal roller 66 is a roller that is provided at the outer end of the extension jack 63 in the lateral direction D2 and has a rotation axis that extends in the up-down direction. The horizontal roller 66 is a roller that comes into contact with the flange of the H-shaped steel 11B on the inside of the lateral direction D2 of the main body 2A and rotates along the flange. The extension jack 63 adjusts its length so that the distance in the lateral direction D2 between the H-shaped steel 11B on both sides is kept constant, and maintains the length. Since the suspenders 6A and 6B suspend the material W1 on the inside of the lateral direction D2 of the frame 2, the long member 11 tends to displace inward in the lateral direction D2. In response to this, the horizontal roller 66 of the displacement suppression unit 62 comes into contact with the H-shaped steel 11B at a predetermined position, suppressing the displacement of the H-shaped steel 11B.

[0053] As shown in Fig. 1, the hand-stretching support unit 7 has a slide mechanism 70 that slides the hand-stretching unit 2B in the lateral direction D2 when placed on the ground. The slide mechanism 70 can finely adjust the front ends of the long members 12 on both sides of the hand-stretching unit 2B in the lateral direction D2.

[0054] The detailed configuration of the slide mechanism 70 will be described with reference to FIG. 7. FIG. 7 is an enlarged view of the slide mechanism 70 seen from the longitudinal direction D1. As shown in FIG. 7, the slide mechanism 70 includes a telescopic jack 71, a pair of hand-stretching section slide members 72, and a pair of hand-stretching support section slide members 73. One end of the telescopic jack 71 is connected to a side surface of one of the elongated members 12 of the hand-stretching section 2B. The other end of the telescopic jack 71 is connected to the upper surface of the beam member 42 of the hand-stretching support section 7. The hand-stretching section slide member 72 is a plate-like member fixed to the lower surface of the elongated member 12 of the hand-stretching section 2B. The hand-stretching support section slide member 73 is fixed to a position corresponding to the elongated member 12 on the upper surface of the beam member 42 of the hand-stretching support section 7. The lower surface of the hand-stretching section slide member 72 and the upper surface of the hand-stretching support section slide member 73 are in surface contact with each other so as to be slidable in the lateral direction D2. These contact surfaces may be configured as slippery surfaces by Teflon coating or the like.

[0055] When the telescopic jack 71 is extended, the connection part with the long member 12 moves to one side in the horizontal direction D2 (the right side in FIG. 7). As a result, the entire hand-extending part 2B slides to one side in the horizontal direction D2 relative to the beam member 42, which is immovable relative to the ground. When the telescopic jack 71 is retracted, the connection part with the long member 12 moves to the other side in the horizontal direction D2 (the left side in FIG. 7). As a result, the entire hand-extending part 2B slides to the other side in the horizontal direction D2 relative to the beam member 42, which is immovable relative to the ground.

[0056] 1, each traveling unit 20 of the swivel-type traveling sections 3A, 3B is provided with the above-mentioned height adjustment mechanism 28. Therefore, the traveling sections 3A, 3B can adjust the height position of the elongated member 11 of the main body 2A from the ground on both sides in the lateral direction D2.

[0057] The configuration of the height adjustment mechanism 28 will be described in detail with reference to FIG. 8. FIG. 8(a) is a conceptual diagram showing the state of the traveling unit 20 with respect to the ground F1 on which a cant has been formed. FIGS. 8(b) and 8(c) are enlarged cross-sectional views showing the internal structure of the height adjustment mechanism 28. The cant means that the outer rail or ground F1 is higher than the inner rail or the difference in height in a curved section of a track or road. As shown in FIG. 8(a), the ground F1 is inclined so that one side (the right side in FIG. 8(a)) in the lateral direction D2 is higher than the other side (the left side in FIG. 8(a)). In this case, in order to make the long members 11 and 12 on both sides parallel to the horizontal direction (they have the same vertical position), it is necessary to adjust the height positions of the long members 11 and 12 in accordance with the inclination of the ground F1. Therefore, the height adjustment mechanism 28 of each traveling unit 20 adjusts the length of the traveling unit 20, that is, the vertical distance between the long members 11 and 12 and the ground F1. The height adjustment mechanism 28 on the other side in the lateral direction D2, where the ground surface F1 is at a lower position, is configured to be longer in the up-down direction than the height adjustment mechanism 28 on one side.

[0058] Specifically, as shown in Figs. 8(b) and (c), the height adjustment mechanism 28 has a rod portion 76 and a cylinder portion 77. The rod portion 76 is fixed to an upper member of the traveling unit 20 and is inserted into the cylinder portion 77 from above. The cylinder portion 77 is fixed to a lower member of the traveling unit 20 and accommodates the rod portion 76 so that it can slide up and down. Fig. 8(b) shows the height adjustment mechanism 28 on the other side of the horizontal direction D2 in Fig. 8(a). Fig. 8(c) shows the height adjustment mechanism 28 on one side of the horizontal direction D2 in Fig. 8(b). As shown in Fig. 8(b), the lower end of the rod portion 76 moves to the vicinity of the upper end of the cylinder portion 77, thereby increasing the length of the height adjustment mechanism 28. Also, as shown in Fig. 8(c), the lower end of the rod portion 76 moves to the vicinity of the lower end of the cylinder portion 77, thereby decreasing the length of the height adjustment mechanism 28.

[0059] Here, as shown in FIG. 9, the material conveying device 100 may arrange the long material W2 in a state where it extends in the horizontal direction D2. In response to this, the suspenders 6A and 6B are provided with a rotation mechanism 80 that rotates the suspended material W2 in a horizontal plane. The suspenders 6A and 6B suspend one rotation mechanism 80 together while being close to each other in the longitudinal direction D1. As shown in FIG. 9(a), the suspenders 6A and 6B suspend and convey the material W2 in a state where it extends in the longitudinal direction D1. As shown in FIG. 9(b), the suspenders 6A and 6B rotate the material W2 by 90° at the installation position using the rotation mechanism 80. As a result, the suspenders 6A and 6B place the material W2 in a state where it extends in the horizontal direction D2. The suspenders 6A and 6B place the material W2 in this state at the installation position.

[0060] The rotation mechanism 80 will be described in detail with reference to FIG. 10. FIG. 10 is an enlarged view showing the rotation mechanism 80. As shown in FIG. 10, the rotation mechanism 80 includes a rotation unit 81 and a holding unit 82. The rotation unit 81 is a part that rotates the material W2. The rotation unit 81 includes a gear box 81a in which gears and the like are housed, and a driving unit 81b that applies a rotational driving force to the gear box 81a. The gear box 81a is fixed to the hanging member 38 at the upper end side. The gear box 81a rotates the lower plate 81c in a horizontal plane around a rotation axis that extends in the vertical direction. The holding unit 82 is a member that holds the material W2. The upper end of the holding unit 82 is fixed to the lower plate 81c. The holding unit 82 is connected to the material W2 at the lower end. As a result, the rotation unit 81 rotates the lower plate 81c, thereby rotating the material W2 via the holding unit 82.

[0061] Next, the operation and effect of the material transport device 100 according to this embodiment will be described.

[0062] In the material conveying device 100 according to this embodiment, the swivel-type running parts 3A, 3B (horizontal take-up parts) are provided on the main body part 2A. The hand-stretching part 2B can extend in the longitudinal direction D1 from the front end of the main body part 2A in the longitudinal direction D1. Therefore, in the stage before the material W1 is lowered from the hanging member 38 at the position of the hand-stretching part 2B, the angle of the main body part 2A in the horizontal plane can be adjusted using the swivel-type running parts 3A, 3B. Therefore, the angle of the entire stand 2 can be adjusted so that the position of the hand-stretching part 2B matches the angle of the installation position. Here, the hanging parts 6A, 6B capable of suspending the material W1 below the stand 2 move on the upper surfaces 2Aa, 2Ba of the main body part 2A and the hand-stretching part 2B. In this way, by the suspension parts 6A, 6B moving on the upper surfaces 2Aa, 2Ba of the main body part 2A and the hand-stretching part 2B, even if the weight of the material W1 becomes heavy, the suspension parts 6A, 6B can be made to run in the longitudinal direction D1 while the main body part 2A and the hand-stretching part 2B support the load with a simple structure. As a result, heavy material W1 can be transported with a simple structure.

[0063] The suspending parts 6A, 6B may have a suspending member 38 that suspends the material W1 on the inner side in the lateral direction D2 of the frame 2. In this case, the suspending parts 6A, 6B can hold the material W1 on the outer side in the lateral direction D2 of the frame 2 and place the material W1 on the outer side.

[0064] The stand 2 has a pair of elongated members 11 arranged in the horizontal direction D2, and the pair of elongated members 11 may be provided with a displacement suppression mechanism 60 that suppresses displacement in the horizontal direction D2 of the pair of elongated members 11. In this case, even when the hanging parts 6A, 6B are transporting a heavy material W1, the displacement suppression mechanism 60 can suppress displacement of the pair of elongated members 11 in the horizontal direction D2.

[0065] The hanging parts 6A, 6B may include a rotation mechanism 80 that rotates the suspended material W1 in a horizontal plane. In this case, the hanging parts 6A, 6B can set the material W2 at an angle different from that during transportation.

[0066] A pair of propulsion units 20 are provided to be aligned in the lateral direction D2 with respect to the main body part 2A, and the pair of propulsion units 20 may have a height adjustment mechanism 28 that adjusts the height position of the main body part 2A. In this case, even when the ground is inclined in the lateral direction, the height adjustment mechanism 28 adjusts the height of the main body part 2A on both sides of the main body part 2A in the lateral direction D2, so that the main body part 2A can be maintained in a horizontal state.

[0067] The stand 2 may have an extension jack 50 that extends and retracts the hand-extended portion 2B relative to the main body portion 2A. In this case, the extension jack 50 repeatedly extends and retracts, so that the length of the hand-extended portion 2B relative to the main body portion 2A can be adjusted with a simple configuration.

[0068] The material conveying device 100 further includes a hand-stretching support section 7 that is provided at the end of the hand-stretching section 2B opposite to the main body section 2A in the longitudinal direction D1 and supports the hand-stretching section 2B, and the hand-stretching support section 7 may have a slide mechanism 70 that slides the hand-stretching section in the lateral direction while it is placed on the ground. In this case, the slide mechanism 70 can finely adjust the position of the hand-stretching section 2B in the lateral direction D2.

[0069] The material conveying device 100 further includes a hand-stretching support part 7 that is provided at the end of the hand-stretching part 2B opposite to the main body part 2A in the longitudinal direction D1 and supports the hand-stretching part 2B, and the running parts 3A, 3B and the hand-stretching support part 7 may have telescopic mechanisms 23, 43 that can be extended and contracted to contact the ground. In this case, by bringing the telescopic mechanisms 23, 43 into contact with the ground according to the work process, the running parts 3A, 3B can be immobilized relative to the ground, and the hand-stretching part 2B can be supported by the hand-stretching support part 7.

[0070] Second Embodiment 11 to 14 are diagrams showing the material conveying apparatus 100 according to the second embodiment. FIG. 11(a) is a side view showing the material conveying apparatus 100 according to the second embodiment. FIG. 11(b) is a plan view of the material conveying apparatus 100 according to the second embodiment of the present invention. FIG. 12 is a view of the suspending part 6B as viewed from the longitudinal direction D1. FIG. 13 is a view of the suspending position adjustment mechanism 90 of the suspending part 6B as viewed from above. FIG. 14 is an enlarged view of the reaction force generating mechanism 110 as viewed from the longitudinal direction D1. The material conveying apparatus 100 according to the second embodiment is mainly different from the material conveying apparatus 100 according to the first embodiment in that the suspending parts 6A and 6B have a suspending member 38 for suspending the material W3 on the outer side in the lateral direction D2 of the stand 2. In addition, the material conveying apparatus 100 according to the second embodiment is mainly different from the material conveying apparatus 100 according to the first embodiment in that the traveling parts 3A and 3B have a rail traveling part 86 that travels on the rail R. The traveling sections 3A, 3B have wheels 87 capable of running on the rails R between the traveling units 20 in the front-rear direction.

[0071] As shown in FIG. 12, the hanging section 6B includes a pair of moving sections 34, a pair of lifting sections 37, a pair of hanging members 38, and a hanging position adjustment mechanism 90. The moving section 34, the lifting section 37, and the hanging members 38 have the same configuration as in the first embodiment. As shown in FIG. 12 and FIG. 13, the hanging position adjustment mechanism 90 includes support sections 91A, 91B, overhanging members 92A, 92B, and telescopic mechanisms 93A, 93B. In FIG. 13, the upper walls of the support sections 91A, 91B and the overhanging members 92A, 92B are omitted in order to show the internal telescopic mechanisms 93A, 93B. The support sections 91A, 91B are bridged across the moving sections 34 on both sides in the lateral direction D2. The support sections 91A, 91B are provided adjacent to each other in the longitudinal direction D1. The support parts 91A and 91B support overhanging members 92A and 92B. The overhanging members 92A and 92B overhang outward from the stand 2 in the horizontal direction D2 to support the lifting section 37 and the hanging member 38. The overhanging member 92A is a member that overhangs to one side from an end part on one side (the right side in FIG. 12) of the support part 91A in the horizontal direction D2. The overhanging member 92B is a member that overhangs to the other side from an end part on the other side (the left side in FIG. 12) of the support part 91B in the horizontal direction D2.

[0072] The telescopic mechanism 93A is a mechanism for telescopically extending the protruding member 92A in the lateral direction D2. The telescopic mechanism 93A includes a cylinder 93a and a piston rod 93b. The cylinder 93a advances and retreats the piston rod 93b by hydraulic pressure. The other end of the cylinder 93a in the lateral direction D2 is fixed to the other end 91a of the support part 91 via a fixing part 96. The piston rod 93b is a member extending from one end of the cylinder 93a toward one side. The other end of the piston rod 93b is connected to a piston (not shown) disposed in the cylinder 93a. The one end of the piston rod 93b is fixed inside the protruding member 92 via a fixing part 97. As a result, the telescopic mechanism 93A can increase the protruding amount of the protruding member 92A by extending the piston rod 93b. The support part 91B, the overhanging member 92B, and the extension mechanism 93B have the same configuration as the support part 91A, the overhanging member 92A, and the extension mechanism 93A, except that the overhanging directions are opposite. This allows the hanging position adjustment mechanism 90 to adjust the position of the hanging member 38 in the lateral direction D2 by adjusting the overhang amount of the overhanging members 92A and 92B.

[0073] As shown in FIG. 1, the reaction force generating mechanism 110 generates a reaction force against the action of the wheels of the hanging parts 6A and 6B lifting up from the rails. The reaction force generating mechanism 110 is provided on the front side of the hanging part 6A, and the reaction force generating mechanism 110 is provided on the front side of the hanging part 6B. As shown in FIG. 14, the reaction force generating mechanism 110 is sandwiched between horizontal rollers 111 on both sides in the lateral direction D2. The horizontal rollers 111 are supported by shafts 112 extending in the vertical direction. The horizontal rollers 111 have flanges 111a at both ends in the vertical direction. For example, when the movable rollers 34a and 34b of the hanging parts 6A and 6B lift up from the rails 14 and 16, the flanges 111a of the horizontal rollers 111 interfere with the rails 16, generating a reaction force.

[0074] As described above, the suspending parts 6A, 6B may have the suspending members 38 that suspend the material W3 on the outer side in the lateral direction D2 of the gantry 2. In this case, the suspending parts 6A, 6B can hold the material W3 on the outer side in the lateral direction D2 of the gantry 2 and place the material W3 on the outer side.

[0075] The hanging parts 6A, 6B may include overhanging members 92A, 92B that overhang outward from the frame 2 in the horizontal direction D2 and support the hanging member 38, and extension mechanisms 93A, 93B that extend and contract the overhanging members 92A, 92B in the horizontal direction D2. In this case, the positions of the hanging parts 6A, 6B can be adjusted with a simple configuration in which the overhanging members 92A, 92B are simply extended and contracted in the horizontal direction D2 by the extension mechanisms 93A, 93B.

[0076] The main body 2A includes a rail 16 that guides the hanging parts 6A, 6B in the longitudinal direction D1, and the hanging parts 6A, 6B may include a main body moving roller 34a that runs along the rail 16, and a reaction force generating mechanism 110 that generates a reaction force against the movement of the main body moving roller 34a rising up from the rail 16. In this case, even if the weight of the material W3 becomes heavy, the reaction force generated by the reaction force generating mechanism 110 can suppress the rising up of the main body moving roller 34a of the hanging parts 6A, 6B. The reaction force generating mechanism 110 may be applied to the material conveying device 100 of the first embodiment.

[0077] The present invention is not limited to the above-described embodiments.

[0078] In the above-described embodiments, the swivel-type traveling units 3A and 3B have the function of a traveling unit and also the function of a swivel unit. Alternatively, the traveling unit and the swivel unit may be separate members.

[0079] Each mechanism employed in each of the above-described embodiments may be omitted or may be configured with a different mechanism. For example, the extension mechanism 23, 43, the height adjustment mechanism 28, the extension jack 50, the displacement suppression mechanism 60, the slide mechanism 70, the rotation mechanism 80, the hanging position adjustment mechanism 90, and the reaction force generating mechanism 110 may be configured with a different mechanism or may be omitted.

[0080] In addition, the detailed configuration may be modified as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0081] 2...frame, 2A...main body, 2B...hand-extending section, 3A, 3B...swiveling running section (running section, horizontal section), 6A, 6B...hanging member, 7...hand-extending support section, 11, 12...long member, 16...rail, 20...running unit, 23, 43...telescopic mechanism, 28...height adjustment mechanism, 34a...moving roller for main body (moving roller), 38...hanging member, 50...telescopic jack, 60...displacement suppression mechanism, 70...slide mechanism, 80...rotation mechanism, 92A, 92B...extending member, 93A, 93B...telescopic mechanism, 100...material transport device, 110...reaction force generating mechanism.

Claims

1. A stand including a main body portion extending in a long length and a hand-stretching portion that transitions from a state housed in the main body portion to a hand-stretching state by extending from one end of the main body portion in the longitudinal direction to one side in the longitudinal direction; A running unit connected to the main body unit of the pedestal; a horizontal movement part provided on the main body part of the frame and capable of moving the frame in a horizontal direction; A hanging part that is movable in the longitudinal direction relative to the stand and can hang materials below the stand, The first elongated member of the hand-stretching portion can be accommodated in the second elongated member of the main body portion, A material conveying device in which the hanging portion moves over the upper surface of the second elongated member of the main body portion and the upper surface of the first elongated member of the hand-stretching portion when the hand-stretching portion is in a hand-stretching state.

2. The material transport device according to claim 1 , wherein the hanging portion has a hanging member for hanging the material on an outer side of the platform in the lateral direction.

3. The hanging portion is a protruding member protruding outward from the base in the lateral direction and supporting the hanging member; The material transport device according to claim 2 , further comprising: an extension mechanism for extending and contracting the extension member in the lateral direction.

4. The material transport device according to claim 1 , wherein the hanging portion has a hanging member for hanging the material on an inner side of the platform in the lateral direction.

5. The frame has a pair of the second elongated members aligned in the horizontal direction, The material transport device according to claim 4 , wherein the pair of elongated members is provided with a displacement suppression mechanism that suppresses displacement of the pair of second elongated members in the lateral direction.

6. The material transport device according to claim 4 or 5, wherein the hanging portion is provided with a rotation mechanism for rotating the suspended material within a horizontal plane.

7. A pair of traveling units is provided so as to be aligned in the lateral direction with respect to the main body portion, 7. The material transport device according to claim 1, wherein the pair of traveling units each have a height adjustment mechanism for adjusting a height position of the main body portion.

8. The material transport device according to any one of claims 1 to 7, wherein the platform has an extension jack that extends and retracts the hand-extending portion relative to the main body portion.

9. Further provided is a hand-stretching support part provided at an end portion opposite to the main body portion in the longitudinal direction of the hand-stretching part, and supporting the hand-stretching part; The material transport device according to any one of claims 1 to 8, wherein the hand-stretching support section has a sliding mechanism that slides the hand-stretching section in the lateral direction while installed on the ground.

10. Further provided is a hand-stretching support part provided at an end portion opposite to the main body portion in the longitudinal direction of the hand-stretching part, and supporting the hand-stretching part; The material transport device according to any one of claims 1 to 9, wherein the running section and the hand support section have an extension mechanism that can extend and contract to contact the ground.

11. The main body portion includes a rail that guides the hanging portion in the longitudinal direction, The hanging portion is A moving roller that runs along the rail; The material transport device according to any one of claims 1 to 10, further comprising a reaction force generating mechanism that generates a reaction force against the movement of the movable rollers to lift up from the rails.

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