Conveyor

Abstract

PURPOSE: To provide a conveyance machine which can simply and quickly convey a long-sized folded-plate roof board and related components from a construction start position to a desired construction position with minimum labor in a construction site of a long-sized folded-plate roof, and can remarkably improve construction efficiency.CONSTITUTION: A conveyance machine includes: a hollow core rod part 1 that is made of metal and has a circular cross section; a sliding traveling tool A1 having a resin outer coating part 2 having an outer peripheral side face serving as a smooth surface and having slidability, where the core road part 1 is covered with the outer coating part 2; and a conveyance load-carrying platform A2 on which the sliding traveling tool A1 is mounted. The sliding traveling tool A1 is arranged in a loop shape on a lower surface side of the conveyance load-carrying platform A2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a conveying machine that can transport long folded-plate type roof panels and related parts from a construction start position to a desired construction position easily, quickly, and with minimal effort at a construction site of a long folded-plate type roof, thereby significantly improving construction efficiency. [Background technology]

[0002] At a conventional large-area construction site for a folded-plate metal roof, a forming machine for forming a long folded-plate roof panel is first installed at the construction site of the building structure. This forming machine forms a long folded-plate roof panel, and workers are assigned at appropriate intervals along the same direction as the longitudinal direction of the roof panel, transport the roof panel to a designated construction site on a structural member such as a steel beam, and install the roof panel at the designated position. This process is repeated many times to construct a metal folded-plate roof.

[0003] In the construction of the folded plate roof described above, the roof sheet forming machine is a large machine, and this forming machine is installed at a high place by a strong scaffold. Therefore, it is difficult to move the forming machine itself, and the installation place of the forming machine is usually immovable. Therefore, the roof sheet formed by this forming machine is transported to the predetermined construction position on the structural material by the worker's manual power by going back and forth between the installation position of the forming machine and the construction position of the roof sheet.

[0004] That is, workers had to transport the roof panels from the installed area near the installation location of the forming machine to the uninstalled area. As the installed area of ​​the roof panels increases, the distance that the formed roof panels have to be transported from the forming machine increases, and the burden on the workers increases. In order to prevent deformation of the long roof panels during transportation, all the workers must move in step with each other. This means that the stride length and walking speed of each worker are different, and these must be coordinated. In particular, when the roof panels are long, they become heavy and many workers are required. For these reasons, it is difficult to transport the fastened roof panels.

[0005] At the construction site of a metal roof of a folded plate type, the transportation of a large number of folded plate roof panels from the construction start position to the desired construction position by relying on human power places a heavy burden on the workers, and therefore the work efficiency of the construction is also reduced. Therefore, various dedicated transport machines for transporting folded plate roof panels at the construction site have been developed, and transport machines such as carts are often used.

[0006] There are many such conveyors, and a representative example is shown in the patent document. However, most of the conventional conveyors are heavy and expensive. As a result, in the case of folded roof panels, the rungs, which are the extremely important connecting parts between the folded roof panels, or the roof surface may be damaged, and post-processing such as touch-up is required after construction.

[0007] Conventionally, the most common means of transporting folded roof panels have been abacus-type, sled, or ski-type carts, or square pipes or roofing materials that are used as rails, with wheeled carts placed on the rails to transport them. Conventional methods using rails have had problems such as the difficulty of procuring the materials due to the large number of types, and the time required to adjust and set up the rails.

[0008] In addition, the abacus type had the problem that the weight of the abacus itself was heavy, and the casters attached to it damaged the folding plate. The sled type is an effective straightening device because it makes less noise than the abacus type and causes less damage to the running parts. However, the resin plate material used for the sled was expensive and not suitable for frequent replacement.

[0009] For example, replacing the legs costs about 20,000 yen per pair, and if multiple units are used, the cost becomes quite large. Therefore, once purchased, the legs are rarely replaced and the roof is used continuously, so the plate material becomes brittle over time, and there is a great possibility that scratches on the folded plate roof panels (especially the rungs) will become a major problem.

[0010] In the case of sleds made of PVC pipes, although the pipes themselves are inexpensive, they are not heat resistant, so if the number of trips during roof transport is increased, the surface of the sled melts and deforms due to friction, causing problems with damaging the folded roof panels (especially the rungs). Also, in summer, the roof surface temperature reaches 60-80°C, making it unusable. The specifications of commercially available sleds have a polyethylene resin (PE) plate attached to the sled, which is more heat resistant than PVC and has good sliding properties.

[0011] However, polyethylene resin (PE) boards are classified as engineering plastics (commonly known as It is called engineering plastic and is expensive, and when it is made of plate material, it has the disadvantage that the edges become brittle. Also, the contact area with the roof material (especially the ridge) is a surface contact, which increases the resistance. There it was.

[0012] The PVC pipes mentioned above are inexpensive, but they are not heat resistant, so there is a problem that the surface melts if the folded roof sheets are transported back and forth many times. The melting point of PVC pipes is about 60°C, and even heat-resistant types are 80°C. In summer, the surface temperature of a metal roof is about 60°C during the day. ~ About 80°C, and in the summer they could only be used in the morning or evening when it was cooler. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] JP 2019-183616 A Summary of the Invention [Problem to be solved by the invention]

[0014] As mentioned above, various types of conveyors for construction use have been developed in the past, and examples of the main types are disclosed in patent documents. Most of the conventional types, including the main types, have extremely complex structures and are heavy. Conventional types are also difficult to handle, and therefore require a long time and skill for workers to master them. In addition, the noise and vibrations generated by the conveyors when in use are large, and the impact on the work environment and surrounding environment is also a problem.

[0015] The object of the present invention is to provide a conveying machine which can easily, quickly and with minimal effort transport building materials such as long folded-plate type roof panels formed by a forming machine at a construction site for a roof, etc., from the construction start position to the vicinity of an unconstructed area, which minimizes noise and vibration during the transportation operation, can position the folded-plate roof panels at the construction position in a state that makes it easy to install them, and which has an extremely simple structure. [Means for solving the problem]

[0016] Therefore, the inventors have conducted intensive research to solve the above problems, and as a result, have developed the invention of claim 1, which is a hollow core rod portion made of metal and having a circular cross section, and a smooth outer peripheral surface. and The above problem was solved by providing a conveying machine comprising a sliding running device having an outer covering part made of resin, both of which have slidability, the outer covering part covering the core rod part, and a conveying platform on which the sliding running device is mounted, the sliding running device being arranged in a loop shape on the underside of the conveying platform.

[0017] The above problem is solved by the invention of claim 2, which is the conveying machine according to claim 1, characterized in that a plurality of triangular mountain-shaped protrusions are provided at predetermined intervals along the circumferential direction on the outer periphery of the outer covering part of the sliding running tool, and the core rod part is a hollow tube material. The above problem is solved by the invention of claim 3, which is the conveying machine according to claim 1 or 2, characterized in that four sliding running tools are provided, and the four sliding running tools are arranged as a square loop.

[0018] The above problem is solved by providing the invention of claim 4 as the conveying machine according to claim 1 or 2, characterized in that the sliding running device is arranged as a circular annular loop. The above problem is solved by providing the invention of claim 5 as the conveying machine according to claim 4, characterized in that the sliding running device formed as a circular annular loop is configured to be detachable from the conveying platform by being turned upside down.

[0019] The above problem is solved by the invention of claim 6, which is the conveying machine according to any one of claims 1, 2, 3, 4, and 5, characterized in that the conveying platform is rectangular and the sliding running devices arranged in a loop do not protrude in the planar direction of the lower surface of the conveying platform.The above problem is solved by the invention of claim 7, which is the conveying machine according to any one of claims 1, 2, 3, 4, and 5, characterized in that the conveying platform is circular and the sliding running devices arranged in a loop do not protrude in the planar direction of the lower surface of the conveying platform. Effect of the Invention

[0020] In the invention of claim 1, the sliding running tool has a core rod part made of metal and having a circular cross section, and a resin outer cover part having a smooth outer circumferential surface and having slidability, and the core rod part is covered with the outer cover part.The invention further includes two sliding running tools and a transport platform, and both sliding running tools are arranged in parallel.

[0021] As a result, the conveyor can smoothly slide along the top of the installed corrugated roof plate at the construction site in both the front-back and left-right directions by using the sliding running tool configured in a loop shape. When transporting and moving construction materials such as the corrugated roof plate and related parts, the transport work can be performed with very little effort, reducing the burden on workers and improving work efficiency. Furthermore, the conveyor can move on the corrugated roof with very little noise, improving the work environment.

[0022] In addition, by configuring the core rod portion as a hollow tube material, the weight of the sliding running tool can be reduced, and the weight of the entire conveying machine can be reduced, minimizing the labor required for sliding conveying construction materials such as new folded-plate roof panels, and reducing the labor burden on workers. In addition, by reducing the weight of the conveying machine, when the conveying machine is installed on the already-constructed folded-plate roof panel, the weight burden on the already-constructed folded-plate roof panel can be minimized.

[0023] In the invention of claim 2, a plurality of protrusions are provided at predetermined intervals along the circumferential direction on the outer periphery of the outer covering part of the sliding running device, so that when the sliding running device of the conveying machine comes into contact with the folded roof plate, the protrusions and the folded roof plate are in approximately linear contact, and the contact surface between the protrusions and the folded roof plate can be extremely small, allowing the conveying machine to slide over the folded roof plate extremely smoothly.

[0024] Furthermore, in the invention of claim 2, when the sliding tool contacts the folded roof plate, the contact (contact) portion between the tip of the protruding strip and the folded roof plate can be made extremely small, minimizing mutual friction. And, since the cross section of the protruding strip is formed into a triangular mountain shape, the contact state between the sliding tool and the folded roof plate transported and moved on the sliding tool is an approximately linear contact state, minimizing mutual friction, and the sliding tool can slide extremely smoothly on the top of the folded roof plate.

[0025] In the invention of claim 3, the structure of the conveyor can be simplified by configuring the conveyor according to claim 1 or 2 so that four sliding running tools are provided and the four sliding running tools are arranged as a square loop. In the invention of claim 4, the conveyor according to claim 1 or 2 so that the sliding running tools are arranged as a circular ring loop, the degree of freedom of the direction of movement of the conveyor can be maximized. In other words, by configuring the sliding running tool as a circular ring, the sliding running tool comes into contact with the folded plate roof in substantially the same state in any direction during movement.

[0026] This allows the conveyor to move smoothly not only in the forward / backward and left / right directions, but also in diagonal directions. In other words, the conveyor can move in all directions. Therefore, when a worker is using the conveyor to transport materials, etc., and there is an obstacle or cargo in the direction of the intended movement, the worker can freely change the direction of movement of the conveyor as appropriate and change the direction of movement. Even when changing the direction of movement, no particularly strong force is required, and the conveyor can be moved with normal force.

[0027] The invention of claim 5 is a conveyor according to claim 4, in which the sliding device, which is a circular loop, is configured to be detachable by turning it upside down, so that the service life can be extended. In other words, the contact points of the sliding device used for a long time with the folded plate roof during movement and running may wear out and the running performance may decrease.

[0028] At this time, the loop-shaped sliding device, which is detachable from the transport platform, is removed from the transport platform, turned upside down, and reattached to the transport platform, so that the contact surface between the sliding device and the corrugated roof becomes new, allowing the transport machine to move smoothly and extending the service life of the sliding device.

[0029] In the invention of claim 6, the transport platform is rectangular, so that the effective load capacity of the transport platform can be increased. Also, by providing multiple transport machines, the folded roof panels can be stably placed, especially when transporting long folded roof panels, if they are arranged at equal intervals according to the length of the folded roof panels.

[0030] In addition, since the sliding running devices are arranged in a loop shape and are configured so as not to extend beyond the plane of the underside of the transport platform, even if the transport machine collides with an obstacle such as stored construction materials during moving operations, the transport platform will collide with the obstacle first, and the sliding running devices will be protected by the transport platform and damage to the sliding running devices can be prevented.

[0031] In the invention of claim 7, the transport platform is circular, which makes it easier to make the entire transport machine small, and is suitable for irregularly loading relatively small parts, etc. Also, by making the transport platform circular, there are no corners as in the case of a square shape, making it less likely to collide with surrounding obstacles, and even if it does collide, it is less likely to cause damage to each other.

[0032] As described above, the sliding running devices are arranged in a loop shape and are configured so as not to extend beyond the plane of the underside of the transport platform. Therefore, even if the transport machine collides with an obstacle such as stored construction materials during movement, the transport platform will collide with the obstacle first, and the sliding running devices will be protected by the transport platform and damage to the sliding running devices can be prevented. [Brief description of the drawings]

[0033] [Figure 1] 1A is a bottom view of a first embodiment of a conveying machine according to the present invention, FIG. 1B is a view taken along the line X1-X1 of FIG. 1A, and FIG. 1C is an enlarged cross-sectional view of a portion α of FIG. [Diagram 2] 1A is a perspective view showing a simplified portion of a first embodiment of a conveying machine, FIG. 1B is an enlarged view showing a portion of a (β) portion of FIG. 1A with the portion cut away, and FIG. 1C is an enlarged cross-sectional view of a sliding running device. [Diagram 3]1A is a schematic diagram showing the state in which a folded roof panel is placed on a conveying machine of the first embodiment and moved over the folded roof panel, (B) is an enlarged view of the main part of (A), (C) is a cross-sectional view taken along the Y1-Y1 arrow of (B), and (D) is an enlarged view of the (γ) part of (C). [Figure 4] FIG. 1 is a schematic plan view showing a first embodiment of the conveying machine used in the construction of a folded plate roof. [Diagram 5] FIG. 11 is a schematic plan view showing the first embodiment of the conveying machine used in another construction of a folded plate roof. [Figure 6] FIG. 1A is a bottom view of a second embodiment of a conveying device according to the present invention, and FIG. 1B is a perspective view of the conveying device of the second embodiment. [Figure 7] 1A is a longitudinal side view of a second embodiment of the conveying machine, FIG. 1B is an enlarged view of part (δ) of FIG. 1A, FIG. 1C is an enlarged view of part (δ) of FIG. 1A in a state where the sliding running device has been separated from the conveying platform, and FIG. 1D is an enlarged cross-sectional plan view of a connection point of the circular annular sliding running device. [Figure 8] 10(A) to 10(C) are side views showing the process of removing the sliding running device from the transport platform, turning it upside down, and reattaching it in a second embodiment of the transport machine of the present invention, (D) is an enlarged view of the main parts when the sliding running device has been worn down due to contact with the corrugated roof, and (E) is an enlarged view of the main parts when the sliding running device has been turned upside down and is in contact with the corrugated roof. [Figure 9] FIG. 11 is a schematic plan view showing a second embodiment of the conveying machine used for constructing a folded plate roof. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] The present invention will be described below with reference to the drawings. The conveyor A in the present invention is mainly used at the construction site of a metal folded-plate roof to convey a new folded-plate roof panel 8n or parts and tools necessary for roof construction. The present invention will be described below as being used at the construction site of a folded-plate roof. As for the conveying method, a method of conveying a new folded-plate roof panel 8n or related parts, tools, etc. to a predetermined unconstructed position using the conveyor A in the present invention will be described.

[0035] Here, the conveyor A has a forward and backward direction, which is the forward and backward direction when performing normal straight sliding travel, and does not include side-slip or turning travel in the concept of forward and backward travel. Also, the front and rear sides in the forward and backward direction are not particularly limited and are set appropriately depending on the situation. The forward and backward directions are shown in the main drawings.

[0036] The conveyor A serves to convey a new folded-plate roof panel 8n to an unconstructed position at a roof construction site of a building site, using the tops of the multiple folded-plate roof panels 8, 8, ... that have already been constructed as a conveying path from the construction start position (see Fig. 3(A) and Fig. 4). The folded-plate roof panel 8 and the new folded-plate roof panel 8n at the roof construction site to which the conveyor A of the present invention is applied are folded-plate type metal members that are long in the longitudinal direction, generally about 50 m to about 100 m.

[0037] There are various types of folded roof panels 8, such as a fastening type where adjacent roof panels are joined together, a fitting type where a cap material is placed over the joints between adjacent roof panels, and a superposition type where the angled portions of adjacent roof panels are superposed. In the following explanation, the folded roof panels 8 will mainly be described as a fastening type.

[0038] The already installed folded roof panel 8 refers to a panel that has already been properly installed on a bracket 92 on a structural material 91 such as a beam at a construction site such as a roof construction site. The new folded roof panel 8n refers to a roof panel that has not yet been installed at the planned installation position at the roof construction site and is to be installed in the future. The start position of construction refers to the starting point from which construction begins. The uninstalled position refers to a location where the new folded roof panel 8n has not yet been installed (see Figure 4).

[0039] The conveying machine A in the present invention includes a sliding running device A1 and a conveying platform A2. The sliding running device A1 of the conveying machine A is a generally rod-shaped body, which is appropriately arranged and fixed to the underside of the conveying platform A2. The sliding running device A1 is configured to be arranged in a loop shape on the underside of the conveying platform A2. The present invention is roughly divided into a first embodiment and a second embodiment depending on the configurations of the sliding running device A1 and the conveying platform A2.

[0040] First, the sliding running device A1 common to the two embodiments will be described. The sliding running device A1 is generally rod-shaped, and the cross section perpendicular to its longitudinal direction (or axial direction) is generally circular, and more specifically, the outer periphery is generally serrated and gear-shaped (see Figs. 2(B), (C), and 3(D)). The sliding running device A1 is configured with a core rod portion 1 and an outer covering portion 2 (see Figs. 2(C) and 3(D)). The core rod portion 1 is made of metal, and is a rod-shaped material with a circular cross section, and is a hollow tubular material, such as a steel pipe.

[0041] The core rod portion 1 has a diameter of about 20 mm to about 30 mm, and more specifically, an outer diameter of about 27.5 mm and an inner diameter of about 24 mm. As described above, the core rod portion 1 is a hollow tube, but is not limited to this and may be solid. By making the core rod portion 1 a solid shaft, it can be durable and has a certain degree of weight greater than a hollow shaft, so that the conveyor A can be stable during running even when it is blown by the wind while sliding.

[0042] The outer jacket 2 is made of resin and is configured to cover the outer periphery of the core rod portion 1. Coating by coating is one method for coating the outer periphery of the core rod portion 1 with the outer jacket 2, and this coating method allows the amount of resin that constitutes the outer jacket 2 to be extremely small, making it inexpensive. The outer jacket 2 may also be formed into a tube shape, and the core rod portion 1 may be covered by being covered with the outer jacket 2 formed into a tube shape.

[0043] The outer peripheral side surface of the outer covering 2 is smooth and has sliding properties. Specifically, the outer peripheral surface of the outer covering 2 is formed so as to have an extremely small coefficient of friction, and in addition, a material having excellent properties in both durability and strength is used. Specifically, the material of the outer covering 2 is a high-performance, high-density polyethylene resin. The melting point of the high-performance, high-density polyethylene resin is about 120 to about 140°C, and it can fully withstand the intense heat of midsummer.

[0044] The outer periphery of the outer cover 2 of the sliding device A1 has a plurality of protruding strips 21, 21, ... A1 along the longitudinal direction (or axial direction). 1, ... are provided at predetermined intervals in the circumferential direction along the circumferential direction of the sliding device A1. 2(C) and 3(D). More specifically, a large number of protrusions 21, 21, ... are formed at equal intervals along the circumferential direction. The multiple protrusions 21, 21, ... are formed on the outer periphery of the jacket portion 2 such that the intervals between adjacent protrusions 21, 21 are extremely close to each other.

[0045] Furthermore, it is preferable that the imaginary straight line connecting the tops of the adjacent protrusions 21, 21 is positioned radially outward from the valley bottom 22 between the adjacent protrusions 21, 21. This allows the folded roof panel 8 placed on the sliding running tool A1 and transported to abut only on the tops of the protrusions 21 and not on the valley bottom 22. In the present invention, abutment may be referred to as contact.

[0046] The protrusions 21 on the outer cover 2 are formed in a generally triangular shape. Furthermore, when the shape of the protrusions 21 is a triangle, there are those having a generally flattened "eight"-shaped triangular shape (see Figs. 2(C) and 3(D)) and those having a generally inverted "V"-shaped inverted V-shaped mountain shape with a sharp tip. There are also those having the protrusions 21 in a generally trapezoidal shape.

[0047] By providing a plurality of protrusions 21, 21, ... in the circumferential direction on the outer cover portion 2, the sliding running tool A1 and the folded roof plate 8 placed on the sliding running tool A1 come into contact with each other via the tips of the protrusions 21, so that the contact area between the sliding running tool A1 and the new folded roof plate 8n sliding on the sliding running tool A1 is a line contact state with an extremely small contact area, and the friction between them can be made extremely small, so that the new folded roof plate 8n can be transported and moved extremely smoothly on the sliding running tool A1. This is what is done (see Figures 3(B), (C), and (D)).

[0048] Even if the projection 21 is made substantially trapezoidal, the contact state between the projection 21 and the folded roof panel 8 is also included in the substantially linear contact state and is considered to be linear contact. Furthermore, there are also embodiments in which the projections 21, 21, ... are not formed on the outer periphery of the outer sheath 2, and the cross section is substantially circular. The sliding running tool A1 is configured from the metal core rod portion 1 and the resin outer sheath 2, but it is possible to use a single member. In this case, the sliding device A1 is made of metal or resin. In this embodiment, the outer periphery of the sliding tool A1 is also There are cases where the protrusions 21, 21, . . . are formed and cases where the protrusions 21, 21, .

[0049] Next, a first embodiment of the present invention will be described (see Figs. 1 and 2). In the first embodiment of the conveyor A, the conveyor platform A2 is a square pallet type, which is called a square platform portion 3. The rectangular base 3 has a flattened rectangular parallelepiped shape and is made of synthetic resin, wood, or metal. Four sliding running devices A1 are provided, and these four sliding running devices A1 are arranged in a rectangular loop, that is, in a rectangular loop shape, and are arranged and fixed to the underside of the rectangular base 3. Here, when the four sliding running devices A1, A1, ... are arranged in a rectangular loop shape, the four sliding running devices A1, A1 are not directly connected to each other in a continuous manner, but rather the four sliding running devices A1, A1, ... are arranged in a square shape. (See Figs. 1(A) and 2(A).)

[0050] The sliding device A1 arranged in a rectangular loop is disposed on the lower surface side of the rectangular base portion 3 and in a planar direction. In other words, when viewed from above the rectangular base portion 3, the sliding devices A1, which are rectangular and arranged in a loop, are hidden by the transport platform A2 and cannot be seen.

[0051] With this configuration, when the conveyor A is moving over the fastening portion of the corrugated roof B, even if the conveyor A collides with an obstacle such as building materials stored at the construction site, the conveyor platform A2 will collide with the obstacle first, and the sliding device A1 will be supported by the conveyor platform A2. This protects the sliding running device A1 and prevents it from being damaged.

[0052] When the rectangular platform 3 is used as the transport platform A2, the rectangular platform 3 is The container is a flat housing having a substantially rectangular shape. If the transport platform A2 having the rectangular platform portion 3 is made into a square shape, Its size is about 1100 mm x 1100 mm, and its thickness is about 120 mm. The square base 3 may be rectangular, and in this case, its size is about 1100 mm x 1200 mm.

[0053] The transport platform A2 (rectangular platform portion 3) is made of synthetic resin, wood or metal. The upper and lower surfaces of the transport platform A2 may be flat, or may be lattice- or honeycomb-shaped. The upper surface of the rectangular platform portion 3 serves as a platform on which cargo can be placed, and the lower surface of the rectangular platform portion 3 has the sliding running device A1 attached thereto and runs on the folded-plate roof. A typical warehouse pallet may be used for the rectangular platform portion 3.

[0054] Four sliding devices A1, A1, ... are arranged and attached to the underside of the transport platform A2 (rectangular platform portion 3) so as to form a rectangular shape. A1 allows the vehicle to slide on the installed folded roof plate 8. The upper surface of the shaped base 3) serves as a loading platform, and the new folded roof panel 8 and related parts are Construction materials can be placed on it (see Figures 3(A) and 4).

[0055] As described above, the sliding device A1 is provided with four straight rod-shaped members. The sliding running device A1 is attached to the underside of the transport platform A2 (rectangular platform portion 3) via a mounting member 6 (see Figs. 1, 2(B), and 3(C)). The mounting member 6 is made of metal or synthetic resin and is a member for joining the sliding running device A1 and the transport platform A2. As an example, the mounting member 6 has a holding portion 61 and a long, substantially rectangular flange portion 62.

[0056] The holding portion 61 is formed in an inverted gate shape and consists of two holding pieces 61a, 61a and an upper piece 61b. The holding pieces 61a, 61a are plates perpendicular to the flange-shaped portion 62. The flange-shaped portion 62 is formed in a flat plate shape extending horizontally outward from both sides in the width direction of the upper end of the holding portion 61 (see Fig. 1(C)), Fig. 2(B), Fig. 3(C)). The sliding device A1 is clamped in the radial direction by the holding pieces 61a, 61a (see Fig. 1(C), Fig. 2(B), Fig. 3(C)). The distance between the holding pieces 61a, 61a is set to be equal to the diameter of the sliding device A1, or slightly wider or narrower.

[0057] Both flange-like portions 62, 62 are secured to the underside of the transport platform A2 near the outer ends with bolts and screws. The holding portion 61 is fixed to the rectangular transport platform A2 by a fixing member 66 such as a fixing member 66. They are arranged to form a frame (see FIG. 1(C)). The flange-like portion 62 is formed with a through hole through which a fastener 66 passes.

[0058] The sliding tool A1 is fixed to the upper piece 61b of the holding part 61 by a fastener 65 such as a screw. Here, the tip of the fastener 65 such as a screw protrudes from the sliding tool A1 to the outside. It is necessary to prevent the fixing device 65 from coming into contact with the folded-plate roof when the conveyor A moves over the folded-plate roof (see Fig. 1(C) and Fig. 3(C)).

[0059] Also, as a structure for mounting the sliding running device A1 on the transport platform A2, it is possible to directly fasten the sliding running device A1 to the transport platform A2 with the fastener 65 such as a screw. In this case, the transport platform A2 is a simple plate material with a relatively small thickness, and the fastener such as a screw is inserted from the upper surface side of the transport platform A2 to fasten the sliding running device A1 to the transport platform A2. Also, when the transport platform A2 is a pallet made of synthetic resin, it is possible to cut out a part of the lower surface of the pallet and embed the sliding running device A1 on the lower surface side.

[0060] The transport platform A2 may be provided with a push handle 7. The handle 7 is made of a metal pipe, a resin pipe, or the like, and is bent into a gate (arch) shape, similar to the push handle 7 provided on the conveyor A in the first embodiment. The handle 7 is indicated by an imaginary line (dotted chain line) in Fig. 2(A).

[0061] The push handle 7 is provided at one end of the transport platform A2 in the front-to-rear direction, and may be configured to be detachable from the transport platform A2. When the push handle 7 is configured to be detachable, mounting holes are formed in the transport platform A2 (rectangular platform portion 3) and both base portions of the push handle 7 are configured to be detachably inserted into the mounting holes. In this way, the push handle 7 is configured to be detachable from the transport platform A2 (rectangular platform portion 3), making it easy to transport to a construction site.

[0062] Next, an example of a folded-plate roof B constructed using the conveyor A of the present invention will be described. The folded-plate roof B is constructed using a plurality of folded-plate roof panels 8, 8, .... The folded-plate roof panel 8 has rising side portions 82, 82 formed on both sides in the width direction of a bottom plate portion 81. Both rising side portions 82, 82 have top surface portions 83, 83 that are slightly inclined or approximately horizontal toward the outside toward the outside (see Figures 3(A) and (B)).

[0063] A lower run portion 84 is formed on one top surface portion 83, and an upper run portion 85 is formed on the other top surface portion 83. A folded plate roof is constructed by fastening the lower run portion 84 and the upper run portion 85 of adjacent folded plate roof panels 8, 8, ... arranged in parallel to each other on a receiving fixture 92 via a retaining clip (see FIG. 3(A)). As described above, in addition to the fastening type in which the connection points between adjacent roof panels are fastened, there are also types of folded plate roof panels 8, such as a fitting type in which a cap material is placed on the connection points between adjacent roof panels and a polymerization type in which the mountain shapes of adjacent roof panels are overlapped, although not shown in particular.

[0064] Next, a second embodiment of the present invention will be described with reference to Fig. 6 to Fig. 9. In the second embodiment of the present invention, the sliding device A1 is in the form of a circular annular loop. The circular sliding tool A1 is a long sliding tool. A1 is formed into a ring shape, and the ends of the sliding running tool A1 are connected to each other.

[0065] Here, the connection structure between the ends of the circular ring-shaped sliding device A1 will be described. A shaft-shaped connecting member 5 having a diameter that can be inserted into the hollow core rod portion 1 is provided. The connecting member 5 is inserted into the openings at both ends of the butted core rod portion 1 of the annular sliding running tool A1. The connecting member 5 is a member having a radius of curvature that matches the radius of curvature of the arc of the sliding device A1, which is in the shape of a circular ring loop. However, in the case where the connecting member 5 is a short shaft, it may be substantially linear. In order to reduce the weight of the conveyor A, it is preferable that the connecting member 5 is a hollow tube.

[0066] The sliding device A1 formed in a circular ring shape is attached to the bottom surface of the circular base portion 4 via the mounting member 6. The mounting member 6 applied to the second embodiment has a seat plate portion 63 and a holder portion 64. (See Figs. 7(A) and (B)). The seat plate portion 63 is flat, and a holder portion 64 is formed downward from the seat plate portion 63. The holder portion 64 has two clamping pieces 64a, 64a. The clamping pieces 64a, 64a are formed in a substantially semicircular shape that is symmetrical on the left and right, and the clamping pieces 64a, 64a clamp the circular annular sliding device A1 in the diametrical direction. and fix it in place (see Fig. 7(A) and (B)).

[0067] A plurality of mounting members 6 are provided, and the seat plate portions 63 of each mounting member 6 are fixed at substantially equal intervals along the lower surface side of the transport platform A2 and the installation position of the sliding travel device A1 by means of fasteners 65 such as screws. In addition, the clamping pieces 64a, 64a are set slightly narrower than the outer diameter of the sliding travel device A1, and when the sliding travel device A1 is clamped by the clamping pieces 64a, 64a, it can be fixed by applying an elastic pressing force to the outer periphery of the sliding travel device A1. In the second embodiment, the annular sliding travel device A1 may be configured to be detachable from the mounting member 6 (see FIG. 7(C)). In other words, the mounting member 6 can be configured to allow the sliding travel device A1 and the transport platform A2 (circular platform portion 4) to be separated from each other.

[0068] In the second embodiment, the sliding device A1 is configured to be detachable from the mounting member 6. As a result, during the long-term transportation and movement of the fastening of the folded-plate roof B at the construction site, the outer cover 2 of the sliding running tool A1 comes into contact with the fastening part, causing the protrusions 21, etc. to wear out or become soiled with various kinds of dirt (see Figure 8(D)). In this way, when the running surface of the sliding running tool A1 wears out or becomes soiled, the contact area with the fastening part increases, and the frictional resistance increases.

[0069] In such a case, the circular annular sliding device A1 can be freely attached to and detached from the mounting member 6. The sliding running device A1 is temporarily removed from the mounting member 6, and the sliding running device A1 is separated from the transport platform A2 (circular platform portion 4) (see FIG. 8(A)). Next, the sliding running device A1 is turned upside down (see FIG. 8(B)). Then, the turned-over sliding running device A1 is attached to the mounting member 6 again, and the sliding running device A1 and the transport platform A2 (circular platform portion 4) are connected (see FIG. 8(C)).

[0070] As a result, the sliding device A1 can move smoothly with the worn or soiled surface facing up and the new surface facing down, contacting the fastening portion of the folded plate roof B (see FIG. 8(E)). In this way, in the second embodiment, the sliding device A1 can be used for a long period of time and has excellent durability.

[0071] In the second embodiment, the circular platform portion 4 of the transport platform A2 is preferably in the shape of a disk. However, it may be an elliptical or oval shape. Furthermore, the sliding devices A1 arranged in a circular loop are configured not to protrude from the bottom surface of the transport platform A2 in a planar direction (or in a horizontal direction) (see Fig. 6(A)). In other words, when viewed from above the transport platform A2, the sliding devices A1 arranged in a square loop are hidden by the transport platform A2 and cannot be seen.

[0072] With this configuration, as described above, even if the conveying machine A collides with an obstacle such as building materials stocked at the construction site when moving over the fastening portion of the corrugated roof B, the conveying platform A2 will collide with the obstacle first, and the sliding running device A1 will be protected by the conveying platform A2, preventing damage to the sliding running device A1.

[0073] The circular plate-shaped base portion 4 is aligned along the annular straight line of the circular annular sliding device A1. It is preferable that the diameter of the conveyor A is slightly larger than the diameter of the conveyor A. By adopting such a configuration, the conveyor A can travel stably on the folded plate roof. In the conveyor A in the second embodiment, the sliding travel tool A1 is formed in a circular ring shape, so that the conveyor A can travel in the front-rear direction on the folded plate roof. It can move not only left and right, but also diagonally.

[0074] That is, the conveying machine A in the second embodiment can move smoothly in all directions, front and back, left and right (see FIG. 9). When the conveyor A moves on the fastening portion of the folded plate roof B, the cross-sectional shape of the sliding running tool A1 in the moving direction is always the same circular shape, so that the running performance during the moving movement can be made approximately the same. can.

[0075] Next, a conveying method using the conveying machine A in the present invention will be described. Specifically, it will be described as a conveying method for a new folded-plate roof panel 8n in the construction of a folded-plate roof B. As described above, the conveying method by the conveying machine A in the first embodiment (see FIG. 4) is substantially the same as the conveying method by the conveying machine A in the second embodiment.

[0076] First, the supports 92 are arranged and fixed at a predetermined interval on the structural material 91, and after a predetermined number of folded roof panels 8 are installed from the installation start position, multiple conveyors A, A, ... are arranged in parallel on top of the completed folded roof panels 8. Next, a new folded roof panel 8n is placed on the multiple conveyors A, A, ... arranged in parallel (see FIG. 4).

[0077] A plurality of conveyors A are provided and arranged on the folded roof at a predetermined interval. Then, a folded roof panel 8n is placed on the plurality of conveyors A, A, ..., and the parallel conveyors A, A, ... are moved to an unconstructed position, a new folded roof panel 8n is lowered from the conveyor A, and is connected to the constructed folded roof panel 8 by a connecting means such as a fastener. This work is repeated to transport the new folded roof panel 8n to the unconstructed position, and the folded roof is constructed.

[0078] The conveying device of the present invention has been described as being primarily used to transport new folded-plate roof panels 8n at a construction site for a folded-plate roof, but the items being transported are not limited to new folded-plate roof panels 8n, and other long construction materials, structural materials such as beams, etc. can also be transported from the construction start position to an unconstructed position or a transport destination position.

[0079] Furthermore, the conveying machine A of the present invention may convey not only long objects but also roof construction related parts such as supports and retaining clips, or fastening parts such as bolts, nuts, and screws to the target position. In this case, the conveying machine A may be used alone. The conveying machine A is a sliding traveling tool A1 in a loop shape. In this way, the moving direction can be easily changed as needed. In the first embodiment, the operator can change the direction of the conveyor A in the front-rear direction and the left-right direction (width direction).

[0080] As a result, even if there are parts or components that hinder the movement of roof construction parts in the direction of movement when the parts or components are transported to the designated position, the direction of movement of the transport device A can be easily changed, and the parts or components can be transported to the designated position by the transport device A while avoiding the obstacles.

[0081] In the first embodiment of the present invention, when four sliding running devices A1, A1, ... are arranged as a square loop, the transport platform A2 corresponds to the square base portion 3. In the second embodiment, when the sliding running devices A1 are arranged as a circular annular loop, the transport platform A2 corresponds to the circular base portion 4.

[0082] The present invention is not limited to the above two embodiments, and may include four sliding devices A1, When the sliding running device A1, ... are arranged as a square loop, the transport platform A2 may correspond to a circular base portion 4, and when the sliding running device A1 is arranged as a circular annular loop, the transport platform A2 may correspond to a square base portion 3. [Industrial Applicability]

[0083] The conveying machine A in the present invention has been described as conveying the folded-plate roof plate 8n and associated parts (such as the receiving fixture 92) to a predetermined position at the construction site of the folded-plate roof B described above. The conveying machine A in the present invention is not limited to such a construction site of the folded-plate roof, and can also be used at construction sites other than the folded-plate roof. For example, it can be used to convey flat-shaped construction plates and related parts at construction sites of flat roofs, rooftops, etc. where flat-shaped construction plates are connected by a vertical structure. [Explanation of symbols]

[0084] A1...Sliding traveling tool, 1...Core part, 2...Outer covering part, 21...Protruding strip, A2...Transportation platform, 3...Square base portion, 4...Circular base portion.

Claims

1. A conveying machine comprising: a sliding running device having a metallic core rod portion which is circular and hollow in cross section, and a resin outer covering portion which has a smooth outer peripheral side surface and has slidability, the outer covering portion being coated on the core rod portion; and a conveying platform on which the sliding running device is mounted, the sliding running device being arranged in a loop shape on the underside of the conveying platform.

2. 2. The conveying machine according to claim 1, wherein a plurality of triangular mountain-shaped protrusions are provided at predetermined intervals along the circumferential direction on the outer periphery of the outer covering portion of the sliding running device, and the core rod portion is formed as a hollow tube material.

3. 3. The conveying machine according to claim 1, wherein the number of the sliding devices is four, and the four sliding devices are arranged in a square loop.

4. 3. The conveying machine according to claim 1, wherein the sliding members are arranged in a circular loop.

5. 5. The conveying machine according to claim 4, wherein the sliding device formed as a circular loop is configured to be detachable from the conveying platform by being turned upside down.

6. 6. The conveying machine according to claim 1, 2, 3, 4 or 5, wherein the conveying platform is rectangular, and the sliding running devices arranged in a loop are configured so as not to protrude in the planar direction of the underside of the conveying platform.

7. 6. The conveying machine according to claim 1, wherein the conveying platform is circular, and the sliding running devices arranged in a loop are configured not to extend beyond the plane of the underside of the conveying platform.

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