Transport cart for corrugated metal roofing materials

Abstract

Because the materials had to be transported over the already installed corrugated metal roofing, the trolley's posture was prone to becoming unstable during transit, so many workers had to lift the corrugated metal roofing while transporting it. [Solution] The transport trolley for corrugated metal roofing material travels in a direction that crosses the width of the corrugated metal roofing material that makes up the roofing surface. The main plate 5 is pushed forward, and in conjunction with this, the wheels on the inside of the chain roll on the contact surface 7a of the main plate 5. Outside the chain, the outer surface of the top surface 11a of the outer link frame 11 and the outer surface of the top surface 17a of the inner link frame 17 are in a series configuration in the middle of the main plate 5, with only a small gap between them. The straight sections of the traveling part of the transport trolley for corrugated metal roofing material ride up onto the mountain-shaped protrusions in sequence, and since it always rides up on two or more mountain-shaped protrusions, the mounting posture is not disrupted. The mountain-shaped protrusions do not get stuck between the top surfaces 11a and 17a, which would stop the trolley from moving.

Description

Technical Field

[0001] The present invention relates to a carrier for folded plate roofing materials.

Background Art

[0002] Folded plate roofing materials can cover a large roof area at a low cost, and in recent years, they have been widely used for the roofs of buildings such as warehouses and large stores. By the way, in the installation work, the folded plate roofing materials to be installed are carried onto the already installed folded plate roofing materials and then transported to a predetermined installation location. However, the folded plate roofing materials are in a valley shape, and when transporting them on the already installed valley-shaped folded plate roofing materials, the posture of the traveling trolley is likely to collapse. Since the folded plate roofing materials are composed of long members and are heavy, if the posture of the trolley collapses, there is a risk of deformation. Therefore, ordinary trolleys cannot handle this situation, and a large number of workers have to carry the folded plate roofing materials to the predetermined installation location while lifting them.

Prior Art Documents

Patent Documents

[0006] The present invention relates to a transport trolley for corrugated metal roofing materials, comprising: a main body plate having an oval shape with a T-shaped cross-section perpendicular to the circumferential direction; a running section composed of an endless chain wrapped around the circumferential edge so as to be able to travel around it; a connecting section connecting the running sections with a pair of main body plates facing each other; and an operating section directly or indirectly attached to the main body plate, wherein the chain is constructed by partially fitting an inner link frame similar in shape to an outer link frame having a corner C-channel shape cross-section perpendicular to the circumferential direction and linking them via a link shaft, and when the outer link frame and the inner link frame are in series, their respective intermediate surfaces are aligned with a small gap in between, and inside the inner link frame, a wheel is rotatably fitted onto the link shaft that penetrates between a pair of opposing surfaces, and a lip portion is connected to each of the pair of opposing surfaces, and the chain is wrapped around the T-shaped circumferential edge of the main body plate with the wheel of the chain in contact with the surface and the lip portion enclosing and guiding it.

[0007] Preferably, within the inner link frame, a pair of wheels are rotatably fitted onto the link shaft with a collar in between. Preferably, the running section or connecting section is provided with recesses of a locking mechanism into which the mountain-shaped protrusions of the installed corrugated metal roofing material are relatively inserted, and when the mountain-shaped protrusions are relatively inserted into the recesses, the vehicle is locked in a position where it cannot move. Preferably, the recess is provided on the tip side of the arm that is rotatably linked to the running section or connecting section. Preferably, the device includes a mounting portion attached to the connecting portion, the mounting surface of the aforementioned mounting portion is located higher than the traveling portion on the traveling portion side, and a sliding portion is provided on the side opposite to the operating portion in the traveling direction. Preferably, a manually operated orthogonal movement mechanism is attached to the main plate, in which the wheels are grounded so as to be able to move up and down, and the lowered wheels allow movement in a direction perpendicular to the direction of travel by the running section. More preferably, the orthogonal movement mechanism is provided with a guide section that moves up and down integrally with the wheels. [Effects of the Invention]

[0008] The transport trolley for corrugated metal roofing materials of the present invention can travel stably on the surface on which the corrugated metal roofing materials are laid. Furthermore, this transport trolley for corrugated metal roofing materials has a simple structure and is easy to manufacture. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of the transport trolley for corrugated metal roofing materials according to the first embodiment of the present invention, raised above the roofing surface. [Figure 2] Figure 1 is a side view of the transport trolley for corrugated metal roofing materials. [Figure 3] Figure 1 is an exploded perspective view of the main plate and chain of the running section of the transport trolley for corrugated metal roofing materials. [Figure 4] Figure 1 is an enlarged perspective view of a portion of the running section of a transport trolley for corrugated metal roofing materials. [Figure 5] Figure 4 is an exploded perspective view of the chain. [Figure 6] Figure 1 is a cross-sectional view of the running section of a transport trolley for corrugated metal roofing materials. [Figure 7] Figure 1 is a perspective view of the unlocking mechanism of the transport trolley for corrugated metal roofing materials when it is unlocked. [Figure 8] Figure 7 is a perspective view of the locking mechanism when locked. [Figure 9] Figure 1 is a plan view showing the transportation process using a transport trolley for corrugated metal roofing materials. [Figure 10] This is a perspective view of a transport trolley for corrugated metal roofing materials according to a second embodiment of the present invention, raised above the roofing surface. [Figure 11] Figure 10 is a side view of the transport trolley for corrugated metal roofing materials. [Figure 12] Figure 10 is a diagram illustrating the operation of the orthogonal movement mechanism of the transport trolley for corrugated sheet roofing materials. [Figure 13]It is a perspective view of the state during vertical movement using the orthogonal direction movement mechanism of FIG. 12.

Embodiment for Carrying Out the Invention

[0010] The carrier truck 1 for folded plate roof materials according to the first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the traveling part 3 of this carrier truck 1 for folded plate roof materials is of a caterpillar type, and an endless chain 9 is wound around a horizontally long oval main body plate 5. As shown in FIGS. 3 and 4, the peripheral edge part 7 of the main body plate 5 is fixed so that the cross section orthogonal to the circumferential direction forms a "T" shape, and the outer surface of the cross section orthogonal to the plate surface 5a of the main body plate 5 becomes the grounding surface 7a.

[0011] As shown in FIGS. 3 and 5, both the outer link frame 11 and the inner link frame 17 of the chain 9 are formed by bending a metal plate material of the same thickness into an angle C channel shape. When wound around the main body plate 5, the cross section orthogonal to the circumferential direction becomes an angle C channel shape, and both sides and the lower side in the circumferential direction are open. The top surface part 11a constituting the intermediate surface part of the outer link frame 11 is substantially square, and the side surface parts 11b, 11b are bent substantially perpendicular to the top surface part 11a.

[0012] One side edge 13 of the side surface part 11b on one side in the circumferential direction descends vertically a little from the top surface part 1 aa and then descends while inclining so as to bulge toward the tip of the one side, and further descends vertically again from the middle and reaches the lower edge. Therefore, the side edge 13 is continuous from the top surface part 11a as a vertical edge 13a, an inclined edge 13b, and a vertical edge 13c, and the part continuous from the inclined edge 13b to the vertical edge 13c protrudes outward from the top surface part 11a. A through hole 15 is formed in this protruding part. Since the pair of side surface parts 11b, 11b are formed symmetrically when viewed from the circumferential direction, the respective through holes 15, 15 face each other. The side edges 13, 13 on the other side in the circumferential direction of the side faces 11b, 11b are also formed in the same manner as on one side, and the through holes 15, 15 are opposed to each other. However, these through holes 15, 15 are formed closer to the inner side than the protruding portions.

[0013] The top face 17a constituting the intermediate face of the inner link frame 17 is also substantially square, and the side faces 17b, 17b are bent substantially perpendicular to the top face 17a. The side edges 19 on both sides in the circumferential direction of the side face 17b are also formed in the same manner as the side edge 13, and are continuous from the top face 17a as vertical edges 19a, inclined edges 19b, and vertical edges 19c. Also, the through hole 21 is formed at the same position as the through hole 15.

[0014] In this way, the inner link frame 17 is configured similarly to the outer link frame 11. However, the width dimension of the top face 17a is smaller than the dimension in the direction orthogonal to the circumferential direction of the top face 11a, that is, the width dimension, and the side faces 17b, 17b of the inner link frame 17 can be loosely fitted along the inner side between the side faces 11b, 11b of the outer link frame 11.

[0015] Also, the lower edges of the side faces 11b of the outer link frame 11 and the lower edges of the side faces 17b of the inner link frame 17 are both parallel to the plate surfaces of the top faces 11a, 17a, but the lower edge of the inner link frame 17 is higher than the lower edge of the outer link frame 11. Rectangular guide pieces 23 extend from the middle of the lower edges of the side faces 17b, 17b of the inner link frame 17 respectively. The guide piece 23 is close to one side edge 19, and one side edge of the guide piece 23 is on the extension of the vertical edge 19a. This guide piece 23 is bent substantially perpendicular after descending slightly as it is, and extends in a direction approaching the other side face 17b. The tip edges of the pair of guide pieces 23, 23 are close to each other on the lower opening side of the inner link frame 17, and constitute a lip portion for narrowing the opening.

[0016] The outer link frame 11 and the inner link frame 17 are linked together so that they can rotate relative to each other, with their top surfaces 11a and 17a facing upwards, respectively. The other side of a pair of side surfaces 11b, 11b of the outer link frame 11 sandwiches a part of one side of a pair of side surfaces 17b, 17b of the inner link frame 17 from the outside. A single link shaft is inserted through the through holes 15, 15 on the outer link frame 11 and the through holes 21, 21 on the inner link frame 17. The link shaft is made up of bolts 25, which pass through washers 27, 27 located on the outside of the side portions 11b, 11b of the outer link frame 11. The bolts 25 are fastened with nuts 29. In this link configuration, the outer link frame 11 and the inner link frame 17 are arranged alternately in a chain-like fashion. On one side of the rotational direction, the outer link frame 11 can rotate until it contacts the guide pieces 23, 23 on the inner link frame 17 side.

[0017] Inside the side portions 17b, 17b of the inner link frame 17, a pair of wheels 31, 31 are fitted onto bolts 25 via collars 33 so as to be rotatable in both forward and reverse directions on both sides. As shown in Figure 3, the outer link frame 11 and the inner link frame 17 are linked together alternately as described above to form an endless chain 9. As shown in Figures 4 and 6, when the chain 9 is wrapped around the peripheral edge 7 of the main plate 5, the wheels 31, 31 make contact with the ground surface 7a, and the guide pieces 23, 23 enclose and guide the "T" shape from both sides in the circumferential direction.

[0018] When viewed from the direction of the plate surface 5a of the main plate 5, the peripheral edge 7 of the main plate 5 has semi-circular sides in the lateral direction and a straight section in the middle. When the wheels 31, 31 make contact with the middle section, the top surface 11a of the outer link frame 11 and the top surface 17a of the inner link frame 17, which are connected to the wheels 31, 31, are in a series configuration and are lined up almost touching with only a small gap between them. The chain 9 moves in a circular motion around the peripheral edge 7 of the main plate 5 due to the rolling of the wheel 31.

[0019] A pair of running sections 3, 3 are connected and integrated by connecting them with their respective main body plates 5, 5 facing each other, with rectangular pipes with a square cross-section installed as connecting shafts 35, 37, and 39. These connecting shafts 35, 37, and 39 are installed at intervals in the lateral direction of the main body plate 5, but the intermediate connecting shaft 37 is installed closer to one of the other connecting shafts 35. Furthermore, the connecting shaft 35 has rectangular tubes with a square cross-section attached as handles 41, 41 to serve as operating parts. These handles 41, 41 are mounted in an upright position with a gap between them, closer to the opposing main body plates 5, 5.

[0020] Furthermore, on the connecting shafts 35, 37, and 39, short leg portions 43, 43, made of rectangular tubes with a square cross-section, rise from positions near both ends in the axial direction of each shaft. A rectangular tube is placed on the leg portions 43, 43, 43 near one end, straddling the connecting shafts 35, 37, and 39, and is connected as a mounting portion 45. A sliding portion 47, made of a different rectangular tube, is connected to this mounting portion 45 beyond the connecting shaft 39. This sliding portion 47 slopes downwards, and its tip extends down to near the lower end of the running portion 3. The upper surface of the mounting portion 45 to the sliding portion 47 is wrapped in a strip-shaped sheet piece 49. The other end is configured similarly. The upper surface of the mounting section 45 serves as the mounting surface, and the corrugated roofing material (W) is placed on it via the sheet piece 49. This mounting surface is located above the side of the running section 3.

[0021] As shown in Figures 7 and 8, the base end of the arm 51, which serves as a locking mechanism, is attached to the connecting shaft 37. The arm 51 is bendable. The arm 51 is made of a strip-shaped thin plate material, and the base arm 51a is I-shaped, with one end in the longitudinal direction rotatably attached to the connecting shaft 37, allowing it to rotate between an upright position relative to the connecting shaft 37 and a position where it is bent over from above toward the connecting shaft 35. A locking recess 53, formed by bending the strip-shaped plate material into a concave shape, is connected to the tip of the base arm 51a and forms an integral part of it. The bottom surface of the locking recess 53 is attached so as to overlap the plate surface of the base arm 51a, and when the base arm 51a is bent over from above toward the connecting shaft 35, the concave surface of the locking recess 53 faces downward. Furthermore, the space between the pair of side portions 53a, 53a of the locking recess 53 is open in the width direction of the base arm 51a. The dimension of the locking recess 53 in the direction perpendicular to the cross-sectional concave surface is approximately the same as the width dimension of the base arm 51a, and is contained within the width range of the base arm 51a.

[0022] Furthermore, the tip arm 51b is linked to the base arm 51a with their respective plate surfaces facing each other, and the tip arm 51b and base arm 51a are rotatable relative to each other. The tip arm 51b is bent at four points along the width direction in the middle of its longitudinal direction. When the tip arm 51b is extended relative to the base arm 51a, and the base arm 51a is rotated toward the connecting shaft 35 and tilted downwards from above, the L-shaped contact portion 51b(x) comes into contact with the connecting shaft 35, and the I-shaped tip portion 51b(y) extends in the same direction as the base arm 51a. The I-shaped tip portion 51b(y) is located above the lower end of the running section 3.

[0023] On the other hand, when the base arm 51a is positioned upright relative to the connecting shaft 37, the tip arm 51b can be superimposed on the base arm 51a to make it more compact. The linkage is designed to rotate when a certain amount of force is applied, and the aforementioned tilted and upright positions are maintained unless pushed by hand.

[0024] The transport trolley 1 for corrugated metal roofing materials is configured as described above. As shown in Figure 9, multiple corrugated metal roofing material transport carts 1, 1, ... are placed in parallel at appropriate intervals on the roofing surface (G) on which the corrugated metal roofing material (W) is laid. The upper surfaces of the mounting parts 45, 45, ... of each of the multiple corrugated metal roofing material transport carts 1, 1, ... are used as mounting surfaces, and the long corrugated metal roofing material (W) is placed across them. The corrugated metal roofing material (W) may be stacked in multiple pieces, as shown in Figure 2. The number of transport trolleys 1, 1, ... for the corrugated metal roofing material should be such that the corrugated metal roofing material (W) does not sag or deform under its own weight. The transport trolleys 1, 1, ... for corrugated metal roofing materials travel across the corrugated metal roofing materials (W), ... that constitute the roofing surface (G) in the width direction.

[0025] In this state, each of the corrugated metal roofing material transport carts 1, 1, ... is operated by a separate worker. Focusing on one corrugated metal roofing material transport cart 1, when one worker grips the handles 41, 41 and pushes it forward, the main plates 5, 5 are pushed forward, and in conjunction with this, the wheels 31, 31, ... located inside the chains 9, 9 roll along the contact surface 7a of the main plates 5, 5, guided by the guide pieces 23, 23. On the other hand, on the outside of the chains 9, the outer surface of the top surface 11a of the outer link frame 11 and the outer surface of the top surface 17a of the inner link frame 17 are in a series relationship in the straight middle section of the main plate 5, almost butting against each other with only a small gap between them, and at the semi-circular lateral ends, they rotate while separating with a gap between them. Then, friction is generated when the middle section comes into contact with the roofing surface (G), and the cart travels on the roofing surface (G).

[0026] The roofing surface (G) on which the corrugated metal roofing material (W) is laid has a mountain-valley shape, and the straight section of the running section 3 of the transport trolley 1 for corrugated metal roofing material is designed to ride up onto these mountain-shaped protrusions in sequence. The running section 3 is designed so that the straight section always rides onto two or more mountain-shaped protrusions, whether stopped or in motion, so the loading posture is not disrupted. Furthermore, as mentioned above, there is almost no gap between the top surface 11a and the top surface 17a in the direction of travel in the straight section, so the mountain-shaped protrusion (M) will not get stuck between the top surface 11a and the top surface 17a, preventing the trolley from stopping.

[0027] While driving, the locking arm 51 is folded in an upright position, as shown in Figure 7. In this position, the lock is not engaged. On the other hand, once the vehicle is transported to the designated location, as shown in Figure 8, the tip of the end arm 51b is held, the arm 51 is extended, and the mountain-shaped projection portion (M) of the roofing surface (G) is aligned with the locking recess 53 and inserted relative to it to lock it in place, while the L-shaped contact portion 51b(x) is brought into contact with the connecting shaft 35. In this state, the mountain-shaped projection portion (M) is inserted into and locked in the locking recess 53. Also, the end arm 51b is brought into contact with and hooked onto the connecting shaft 35. Unless the locking recess 53 is lifted, the locking recess 53 is locked in place against the mountain-shaped projection portion (M), making it impossible to move.

[0028] The corrugated metal roofing material transport trolleys 1, 1, ... travel at a speed that matches the orientation of the placed corrugated metal roofing material (W), and when they reach a designated location, they lower the corrugated metal roofing material (W). As shown in Figure 2, the corrugated metal roofing material (W) can be transported in stacks of multiple pieces. In this case, the top layer of corrugated metal roofing material (W) is lowered manually. However, when it is the last piece, or when only one piece is transported from the beginning, it is shifted so that it straddles the sliding section 47 from the loading section 45, and the corrugated metal roofing material transport trolley 1 is pulled to the rear in the direction of travel. The corrugated metal roofing material (W) then slides down due to its own weight and falls in front of the corrugated metal roofing material transport trolley 1. Figure 9 shows the state in which the corrugated metal roofing material (W) is about to be lowered after being locked in place.

[0029] Thus, by using the corrugated metal roofing material transport trolley 1, it is possible to stably travel on the roofing surface (G) with the corrugated metal roofing material (W) placed on it. Furthermore, this transport trolley 1 for corrugated metal roofing materials has a simple structure and is easy to manufacture.

[0030] Next, a transport trolley 61 for corrugated metal roofing materials according to a second embodiment of the present invention will be described with reference to the drawings. As shown in Figures 10 and 11, this corrugated roofing material transport trolley 61 is a corrugated roofing material transport trolley 1 according to the first embodiment, with a right-angle movement mechanism 63 added. The same reference numerals are used for the same components as in the corrugated roofing material transport trolley 1, and their explanation is omitted. Each of the main body plates 5, 5 has a right-angle movement mechanism 63 attached to the opposite side of its opposing surface. The right-angle movement mechanisms 63, 63 are attached near the semicircular portions on both sides of the oval shape of the main body plate 5. Therefore, a total of four right-angle movement mechanisms 63, 63, 63, 63 are attached to the pair of opposing main body plates 5, 5, which are connected by a connecting shaft 35 or the like.

[0031] Figures 12(a), (b), and (c) are enlarged views of the orthogonal movement mechanism 63. Reference numeral 65 denotes a bracket made of a rectangular thin plate material bent into an L shape, with one side of it overlapping and fixed to the main plate 5, and the bent side facing upwards. The other plate surface, one side 65a, which faces vertically, has a through hole formed therein. A screw cylinder 69, which is connected through the support block 67, is passed through this through hole and tightened with a nut 71, thereby fixing the support block 67 on one side 65a. A cylindrical shaft 73 passes through the threaded tube 69. The lower end of this shaft 73 has an enlarged bottom.

[0032] Reference numeral 75 denotes a mounting portion formed by bending a rectangular thin plate into an Ω-shape. The intermediate surface portion 75a of this portion has its plate surface facing vertically, and a shaft 73, whose axis is also facing vertically, passes through a through hole formed therein from below. The bottom of the shaft 73 is locked to the edge of the hole, and the mounting portion 75 is lifted up by the shaft 73. A support shaft is non-rotatably mounted on a pair of side sections 75b, 75b, which face each other with their plate surfaces facing sideways, flanking the intermediate surface section 75a. A movable roller 77, 77, with a collar fitted inside, is rotatably supported on this support shaft. This movable roller 77 functions as a wheel, and as it rolls, the parts connected via the support shaft move. The direction of movement caused by the rolling of this movable roller 77 is perpendicular to the direction of travel of the traveling section 3 of the transport trolley 61 for corrugated metal roofing materials. The lower end of the moving roller 77 protrudes slightly from the side portions 75b, 75b.

[0033] The end faces 75c, 75c have their plate surfaces facing vertically, and guide rollers 79, 79 are rotatably supported on their undersides as guide sections. The shafts of the guide rollers 79 are oriented vertically, and the two guide rollers 79 guide the material by sandwiching it from both sides in the lateral direction.

[0034] The link mechanism 81 has a lower link member 81a, an upper link member 81b, and a connecting portion 81c that rotatably connects these link members 81a and 81b, and the connecting portion 81c has the function of maintaining the opening angle between the upper and lower link members 81a and 81b via frictional force. The lower end of the lower link member 81a is rotatably supported by the support block 67 via a connecting portion 81d, and the upper end of the upper link member 81b is rotatably supported by the upper end of the shaft 73 via a connecting portion 81e. These connecting portions 81d and 81e also have the function of maintaining the opening angle between themselves and the supported object. Furthermore, a manually operated handle 83 is connected to the upper link member 81b. As shown in Figure 12(a)→(b)→(c), when the handle 83 is rotated to raise the shaft 73 from a tilted position on one side to an upright position and then to the other side, the shaft 73 rises due to the link mechanism 81. When the handle is operated in the opposite direction, the shaft 73 descends. As the shaft 73 moves up and down along with the mounting portion 75, the movable rollers 77, 77 and the guide rollers 79, 79 also move up and down together.

[0035] As shown in Figures 10 and 11, when the moving rollers 77, 77 and the guide rollers 79, 79 are in their upper standby positions, they do not interfere with the movement of the running unit 3. As shown in Figure 13, when the movable rollers 77, 77 and the guide rollers 79, 79 are in a lower position, the movable rollers 77, 77 can make contact with the mountain-shaped protrusions M on the roofing surface G of the corrugated metal roofing material and become able to roll, while the guide rollers 79, 79 surround and guide the mountain-shaped protrusions M from both sides. On the other hand, the wheels 31 of the running section 3 are relatively raised and therefore do not roll. Consequently, if the transport trolley 61 for corrugated metal roofing material is pushed in a direction perpendicular to the direction of travel of the running section 3, the transport trolley 61 for corrugated metal roofing material can be moved in that perpendicular direction.

[0036] Although embodiments of the present invention have been described in detail above, the specific configuration is not limited to these embodiments, and any design changes or other modifications that do not depart from the spirit of the present invention are also included in the invention. For example, the specific configuration is not limited to the shapes of the various parts or their connection specifications, as long as the intended function is realized. As for the locking mechanism, even if a configuration employing a locking recess 53 is used, the shape and connection specifications of the arm 51 in the above embodiment are not limited, as long as it can be manually moved toward and away from the mountain-shaped projection portion (M). For example, it is also possible to provide a magnet in the locking recess 53 and attach it to the mountain-shaped projection portion (M) in a way that makes it difficult to detach by attraction. [Explanation of symbols]

[0037] 1... Transport cart for corrugated metal roofing materials 3... Running gear 5...Main plate 5a...Board surface 7... Peripheral edge 7a... Contact surface 9...Chain 11...Outer link frame 11a...Top section 11b...Side section 13...Lateral edge 13a...Vertical edge 13b...Sloping edge 13c...Vertical edge 15…Through hole 17…Inner link frame 17a...Top section 17b...Side section 19...Lateral edge 19a...Vertical edge 19b...Sloping edge 19c...Vertical edge 21…Through hole 23…Guide piece 25... Bolt 27... Washer 29... Nut 31... Wheel 33...Color 35, 37, 39...Connecting shaft 41...Handle 43...Legs 45... Mounting section 47... Sliding section 49... Sheet piece 51... Arm 51a... Base arm 51b... Tip arm 51b(x)...L-shaped contact part 51b(y)...I-shaped tip part 53...Locking recess 53a...Side part 61... Transport cart for corrugated metal roofing materials 63... Orthogonal movement mechanism 65...Bracket 65a...Single-sided 67...Support block 69...Threaded cylinder 71...Nut 73...Shaft 75...Mounting section 75a...Intermediate surface section 75b...Side part 75c...End part 77...Moving roller 79...Guide roller 81...Link mechanism 81a, 81b...Link members 81c, 81d, 81e... Connecting parts 83... Handle W: Corrugated metal roofing material G: Roofing surface M: Mountain-shaped protrusion

Claims

1. The device comprises a main body plate having an oval shape with a T-shaped cross-section perpendicular to the circumferential direction, a running section composed of an endless chain wrapped around the circumferential section so as to be able to travel around it, a connecting section that connects the running section with a pair of main body plates facing each other, and an operating section that is directly or indirectly attached to the main body plate. The chain is constructed such that an inner link frame, similar in shape to an outer link frame having a cross-section perpendicular to the circumferential direction and shaped like an angular C channel, is partially fitted inside and linked together via a link axis. When the outer link frame and the inner link frame are in series, their respective intermediate surfaces are aligned with a small gap in between. Inside the aforementioned internal link frame, a wheel is rotatably fitted onto the link shaft that passes between a pair of opposing surfaces, and a lip portion is connected to each of the pair of opposing surfaces. A transport trolley for corrugated metal roofing materials, characterized in that the wheels of the chain are in contact with the T-shaped peripheral edge of the main body plate, and the lip portion is wrapped around and guided by the chain.

2. In the transport trolley for corrugated metal roofing materials described in claim 1, A transport trolley for corrugated metal roofing materials, characterized in that a pair of wheels are rotatably fitted onto the link shaft with a collar in between inside the internal link frame.

3. In the transport trolley for corrugated metal roofing materials described in claim 1 or 2, A transport trolley for corrugated metal roofing materials is characterized in that a recess of a locking mechanism is provided on the running section or connecting section, into which the mountain-shaped protrusions of the installed corrugated metal roofing material are relatively inserted, and when the mountain-shaped protrusions are relatively inserted into the recess, the trolley is locked in a position where it cannot move.

4. In the transport trolley for corrugated metal roofing materials described in claim 3, A transport trolley for corrugated metal roofing materials, characterized in that the recess is provided on the tip side of an arm that is rotatably linked to the running section or connecting section.

5. In the transport trolley for corrugated metal roofing materials described in claim 4, It is equipped with a mounting part attached to the connecting part, A transport trolley for corrugated metal roofing materials, characterized in that the mounting surface of the mounting section is located higher than the mounting surface on the travel section side, and a sliding section is provided on the side opposite to the operating section in the travel direction.

6. In the transport trolley for corrugated metal roofing materials described in claim 1 or 2, A transport trolley for corrugated metal roofing materials, characterized in that the main plate is equipped with a manually operated orthogonal movement mechanism, on which the wheels can be raised and lowered and grounded, and the lowered wheels allow movement in a direction perpendicular to the direction of travel by the running section.

7. In the transport trolley for corrugated metal roofing materials described in claim 6, A transport trolley for corrugated metal roofing materials, characterized in that the orthogonal movement mechanism is provided with a guide section that moves up and down in conjunction with the wheels.

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