Conveyance mechanism and conveyance method

Abstract

To provide a conveyance mechanism, etc. that are able to easily convey a to-be-conveyed object according to a conveying condition.SOLUTION: A conveyance mechanism 1 includes a pair of conveyance dollies 2 and a traction device 3 for moving the pair of conveyance dollies 2. Each conveyance dolly 2 includes a dolly 21, a support portion 22 provided on the dolly 21, and a loading platform 23 provided on the support portion 22 so as to be rotatable in a perpendicular plane along one traveling direction of the dolly 21. A front part of an object C to be conveyed is disposed on the loading platform 23 of one of the conveyance dollies 2, and a rear part of the object C to be conveyed is disposed on the loading platform 23 of the other of the conveyance dollies 2. In each conveyance dolly 2, the support portion 22 is attachable to and detachable from the dolly 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a transport mechanism for transporting an object. [Background technology]

[0002] During underground mall renovation work, there are many opportunities to transport long and heavy items such as shutters. Such items cannot be transported using employee elevators, and traditionally the only way to transport them was by having multiple people carry them up the stairs. This resulted in a large physical burden and danger for workers, and also required a large number of people, making it difficult for multiple people to work together.

[0003] On the other hand, Patent Document 1 describes a method of raising and lowering a long escalator frame along a staircase in which the escalator frame is placed on a transport cart to which the chain of an electric chain block is attached, and the escalator frame is pulled up along the staircase together with the transport cart by winding up the chain. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-199165 Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned transport cart has a structure in which the platform on which the escalator frame is placed is supported by a support part, and this support part is fixed to the cart with wheels to form an integrated structure. The required height between the platform and the cart varies depending on the transport conditions, such as the length of the transported item and the angle of the stairs, but with the above-mentioned transport cart, it was difficult to change the height between the platform and the cart depending on the transport conditions.

[0006] The present invention has been made in consideration of the above problems, and has an object to provide a transport mechanism etc. that can easily transport an object according to the transport conditions. [Means for solving the problem]

[0007] The first invention for solving the above-mentioned problems is a transport mechanism comprising a pair of transport carts each having a cart, a support part provided on the cart, and a loading platform provided on the support part so as to be rotatable within a vertical plane along one of the travel directions of the cart, and a traction device for moving the pair of transport carts, wherein the front part of an object to be transported is placed on the loading platform of one of the transport carts and the rear part of the object to be transported is placed on the loading platform of the other transport cart, and the support part of the transport carts is detachable from the carts.

[0008] In the present invention, the front and rear of the transported object are placed on a loading platform that can rotate in a vertical plane provided on a pair of transport carts, and by moving these transport carts with a towing device, the transported object can be transported along stairs, etc., which leads to labor saving in the transportation work, improves safety, and enables the transportation work to be done by a small number of people. Moreover, since the support part of the loading platform is detachable from the carts, the height between the cart and the loading platform can be changed by simply replacing the support part with another support part while using a general-purpose cart, and various transportation conditions can be easily accommodated.

[0009] It is desirable to have a connecting member that connects the platforms of the pair of transport carts together. This allows the inclination of the loading platforms of the pair of transport carts to be linked, enabling stable transportation.

[0010] It is preferable that the carrier is rotatable in a plane. This makes it easier to avoid obstacles when transporting.

[0011] It is desirable that the platform be further rotatable in another vertical plane perpendicular to the vertical plane. This makes it easier to transport in tight spaces.

[0012] The second invention is a method for transporting an object using the transport mechanism of the first invention, characterized in that a scaffolding board for running the transport cart on a staircase is provided, and the towing device is used to move a pair of the transport carts, on which the front and rear of the object are positioned, up or down the scaffolding board along the slope of the staircase. A second aspect of the present invention is a transport method for transporting an object along a staircase using the transport mechanism of the first aspect of the present invention. Effect of the Invention

[0013] According to the present invention, it is possible to provide a transport mechanism etc. that can easily transport an object according to the transport conditions. [Brief description of the drawings]

[0014] [Figure 1] FIG. [Diagram 2] A diagram showing the support part 22 and the loading platform 23. [Diagram 3] FIG. 4 is a diagram for explaining preparation of the transport cart 2. [Figure 4] A diagram showing a scaffolding board 7. [Diagram 5] FIG. [Figure 6] An example of a height-adjustable support 223. [Figure 7] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0016] (1. Transport mechanism 1) 1 is a diagram showing a transport mechanism 1 according to an embodiment of the present invention. The transport mechanism 1 transports a long object C along a staircase F, and includes a pair of transport carts 2, a traction device 3, a connecting member 4, etc.

[0017] The transported item C may be, for example, a core rod for winding shutters used in commercial facilities in underground malls, and the stairs F are stairs for accessing the underground mall from above ground, but are not limited to these.

[0018] A rear portion of the transported item C (rear portion in the transport direction of the transported item C) is placed on the loading platform 23 of one of the transport carts 2 and fixed to the loading platform 23 using a binding material 5 such as a cargo tie. A front portion of the transported item C (front portion in the transport direction of the transported item C) is placed on the loading platform 23 of the other transport cart 2 and fixed to the loading platform 23 similarly using a binding material 5. In this embodiment, a towing device 3 is used to move the transport carts 2 down the stairs F along the slope of the stairs F.

[0019] The transport cart 2 has a cart 21, a support part 22 provided on the cart 21, and a loading platform 23 attached to the support part 22. The loading platform 23 is provided so as to be rotatable within a vertical plane along the traveling direction of the cart 21. This traveling direction (one traveling direction) corresponds to the left-right direction in FIG.

[0020] The dolly 21 has wheels 212 on the underside of a flat rectangular body 211, and may be an aluminum six-wheel dolly that is commonly used at construction sites. However, the dolly 21 is not limited to this.

[0021] A sheet-like anti-slip material (not shown) such as a rubber mat is provided on the cart 21, and the support part 22 is removably attached thereon using a binding material 6 such as a cargo tie belt.

[0022] 2 is a diagram showing the support part 22 and the loading platform 23. The support part 22 and the loading platform 23 are formed using steel material such as angle iron, but are not limited to this. Other materials may be used as long as they have sufficient strength and rigidity.

[0023] The support section 22 has a rectangular frame member in which a pair of beams 221 are arranged in parallel along the traveling direction, and the front and rear ends of the pair of beams 221 are connected by cross members 222. The support section 22 is detachably fixed to the cart 21 by attaching this frame member to the cart 21 with the binding material 6.

[0024] Support members 223 for rotatably supporting the loading platform 23 are further provided at corresponding positions in the longitudinal direction of the pair of beam members 221. The support member 223 has a triangular truss-like configuration, and the loading platform 23 is rotatably supported by a rotation axis S at the vertex portion at the upper part of the support member 223.

[0025] In addition, at the longitudinal center of the front and rear cross members 222, there are provided a wire mounting portion 224 having a hole for attaching the wire W extending from the traction device 3, and a mounting hole 225 for attaching the lower part of the fixed pillar described later.

[0026] The loading platform 23 is attached to the upper part of the support member 223 so as to be rotatable within the vertical plane by a rotation axis S. The loading platform 23 is a rectangular frame member that is slightly smaller than the frame member of the support part 22 described above, and like the frame member of the support part 22, has a configuration in which a pair of beam members 231 are arranged in parallel along the traveling direction, and the front and rear ends of the pair of beam members 231 are connected by cross members 232.

[0027] In addition, connecting member mounting parts 233 having holes for mounting the connecting members 4 are provided at both longitudinal ends of the front and rear cross members 232. In addition, a mounting piece 234 having a hole for mounting the upper part of a fixed column described later is provided at the longitudinal center of the cross member 232.

[0028] The connecting material 4 connects the loading platforms 23 of the transport carts 2 to each other, and links the inclination of the two loading platforms 23. A steel material such as an angle bar is used as the connecting material 4, and both ends of the connecting material are attached to the connecting material attachment parts 233 of each loading platform 23 using bolts, nuts, etc. The length of the connecting material 4 is appropriately changed depending on the length of the transported item C.

[0029] The traction device 3 is, for example, a winch that uses a motor or the like to wind up and unwind the wire W wound around a drum. The traction device 3 is provided on an upper landing or the like of the stairs F. The tip of the wire W is attached to the wire attachment part 224 of the support part 22 of one of the transport carts 2.

[0030] (2. Preparation of transport cart 2 and transportation of transport item C) When transporting the transported item C, first prepare the transport cart 2. In this case, as shown in Fig. 3(a), a non-slip mat such as the rubber mat (not shown) is placed on the cart 21, and then the support part 22 is placed on the non-slip mat and fixed to the cart 21 with a binding material 6 or the like.

[0031] 3(b), a loading platform 23 is attached to the upper part of the support part 22. After that, as shown in FIG. 3(c), a vertical fixing pillar 24 is used to temporarily fix the loading platform 23 in a horizontal position.

[0032] The fixed pillar 24 is, for example, an angle bar, and its upper part is attached to the mounting piece 234 (see Figure 2) of the cargo bed 23 using bolts, nuts, etc., and its lower part is attached to the cross member 222 of the support part 22 using the above-mentioned mounting hole 225 (see Figure 2), also using bolts, nuts, etc.

[0033] After the pair of transport carts 2 are prepared in this manner, the front and rear ends of the transported item C are placed on the loading platforms 23 of the transport carts 2 and secured by binding materials 5 or the like. The fixing posts 24 are removed when transportation of the transported item C begins.

[0034] Meanwhile, a scaffolding board 7 for running the transport cart 2 is installed on the steps of the staircase F. Fig. 4 is a diagram showing the scaffolding board 7. The scaffolding board 7 is a long plate material that is generally used at construction sites, and protrusions 71 are provided on both sides in the width direction over the entire length of the scaffolding board 7 to prevent the transport cart 2 from running off.

[0035] In this embodiment, in order to prevent the scaffolding board 7 from shifting, a wooden camber 8 is installed at the connection between the top step of the staircase F and the scaffolding boards 7, and the scaffolding board 7 is positioned and fixed on the camber 8 with fasteners 9 such as nails or screws.

[0036] The camber 8 is a columnar member having a right-angled triangular cross section, and is disposed so that two perpendicular sides of the cross section are aligned with the horizontal and vertical planes of the steps of the staircase F, respectively.

[0037] To fix the camber 8, a jack 10 is provided on one side of the camber 8. The jack 10 applies a reaction force to the surface A of one of the structures on both sides of the staircase F, and presses the camber 8 against the surface B of the other structure. This fixes the camber 8 on the staircase F.

[0038] 4 denotes an access section for smoothly driving the transport cart 2 onto the scaffolding board 7, and is made of a steel plate or the like. As another method for smoothly driving the transport cart 2 onto the scaffolding board 7, the scaffolding board 7 may be cut out to match the inclination of the stairs F so that the upper end of the scaffolding board 7 in the longitudinal direction becomes a horizontal plane.

[0039] When transporting the transported item C, the pair of transport carts 2 carrying the transported item C are lowered on the scaffolding boards 7 of the stairs F along the slope of the stairs F by unwinding the wire W from the winch of the traction device 3 shown in Fig. 1. At this time, the loading platform 23 of each transport cart 2 rotates according to the slope of the stairs F. It is also possible to prevent the wire W from rubbing against the steps by providing rollers (not shown) at the nosing portion at the top of the steps of the stairs F and hooking the wire W onto the rollers as necessary.

[0040] In this embodiment, the descent speed of the transport cart 2 can be controlled by adjusting the unwinding speed of the wire W by operating the winch. Also, by winding up the wire W with the winch, it is possible to raise the transport cart 2 on the scaffolding boards 7 of the stairs F along the slope of the stairs F.

[0041] As described above, in this embodiment, the front and rear of the transported object C are placed on the loading platforms 23 that are rotatable in a vertical plane provided on a pair of transport carts 2, and these transport carts 2 are moved by the towing device 3, so that the transported object C can be transported along stairs F, etc., which leads to labor saving in the transportation work, improves safety, and enables transportation work by a small number of people. Moreover, since the support part 22 of the loading platform 23 is detachable from the cart 21, the height between the cart 21 and the loading platform 23, etc. can be changed by simply replacing the support part 22 with another support part 22 while using a general-purpose cart 21, and various transportation conditions can be easily accommodated.

[0042] In this embodiment, the loading platforms 23 of the pair of transport carts 2 are connected to each other by the connecting members 4, which allows the inclinations of the loading platforms 23 of the pair of transport carts 2 to be linked, enabling stable transport.

[0043] However, the present invention is not limited to the above embodiment. For example, in this embodiment, the conveying mechanism 1 is used to convey long materials, but the conveying mechanism 1 can also be used to convey other materials.

[0044] In this embodiment, the transported object C is transported up the stairs F by the transport mechanism 1, but the transport mechanism 1 is not limited to this and is also effective when transporting the transported object C on a floor surface where various obstacles such as steps exist. In this case, the transported object C placed on the loading platform 23 can be fixed to the cart 21 with a binding material 5 or the like.

[0045] In this embodiment, the towing device 3 is disposed above the stairs F, but if it is desired to omit the time required to set up the towing device 3 on-site, a winch can be installed on a truck equipped with a crane outside the site, thereby shortening the time required to set up the towing device 3 on-site. If the available work hours are strictly set, preparation of the towing device 3 can be completed simply by bringing in the truck equipped with a crane at the start time of work, and the amount of work to be done within the available work hours can be reduced.

[0046] In this embodiment, a winch is used as the traction device 3, and the transport cart 2 is raised and lowered by the wire W, but the traction device 3 is not limited to a winch. For example, a self-propelled traction device may be connected to the transport cart 2 by a fixed length of wire W or the like, and the transport cart 2 may be moved by the travel of the traction device.

[0047] In addition, the loading platform 23 in this embodiment rotates in a vertical plane along the traveling direction of the dolly 21, but it is also possible to add a rotation mechanism 235 such as a turntable that rotates in a plane, as shown in Fig. 5, and rotate the loading platform 23a in a plane as indicated by the arrow a. This makes it easier to transport the goods C by avoiding the obstacles even if they are on the path of movement of the goods.

[0048] As described above, the required height between the platform 23 and the cart 21 varies depending on the length of the transported goods C, the angle of the stairs F, etc. The height of the support part 22 to be used can be determined taking these factors into consideration, but the height h of the support material 223 of the support part 22 may be made adjustable as shown in FIG.

[0049] Furthermore, as shown in Figure 7(a), a rotation axis S for rotating the loading platform 23b in a vertical plane along the traveling direction of the trolley 21, and a rotation axis S' for rotating the loading platform 23b in another vertical plane perpendicular to the vertical plane may be provided, so that the loading platform 23b can be configured to rotate in both vertical planes.

[0050] When an article C such as a long plate material is loaded onto the platform 23b and transported, the platform 23b can be rotated around the longitudinal direction of the article C (corresponding to the normal direction to the page of FIG. 7(b)) as shown in FIG. 7(b), thereby reducing the width w of the article C and facilitating transportation in a narrow space such as a corridor. When ascending or descending the stairs F as shown in FIG. 1, the platform 23b is made horizontal in the vertical plane (vertical plane perpendicular to the rotation axis S') shown in FIG. 7(b), and in this state, the rotation of the platform 23b around the rotation axis S' can be locked using a locking mechanism or the like (not shown).

[0051] In addition, the wheels 212 of the cart 21 in this embodiment are free casters that can rotate 360° in a plane, but it is also possible to use fixed casters whose traveling direction is fixed. The cart 21 is not limited to a wheeled cart, and it is also possible to use a crawler cart that runs on an endless belt such as a caterpillar.

[0052] In this embodiment, the loading platforms 23 of a pair of transport carts 2 are connected to each other by connecting materials 4, but if the rigidity of the transported item C is high, it is also possible to transport a long transported item C without using the connecting materials 4.

[0053] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above examples. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the technical ideas disclosed in this application, and it is understood that these also naturally belong to the technical scope of the present invention. [Explanation of symbols]

[0054] 1: Transport mechanism 2: Transport cart 3: Traction device 4: Connecting material 7: Scaffolding board 21: Cart 22: Support part 23, 23a, 23b: Cargo platform

Claims

1. A trolley and A support portion provided on the carriage; A loading platform is provided on the support portion so as to be rotatable within a vertical plane along one traveling direction of the dolly; A pair of transport carriages each having a A traction device for moving the pair of transport carriages; having A front portion of an object to be transported is placed on the loading platform of one of the transport carts, and a rear portion of the object to be transported is placed on the loading platform of the other transport cart; A transport mechanism, characterized in that, in the transport cart, the support part is detachable from the cart.

2. 2. The transport mechanism according to claim 1, further comprising a connecting member for connecting the platforms of the pair of transport carts to each other.

3. 2. The transport mechanism of claim 1, wherein the platform is rotatable in a plane.

4. 2. The transport mechanism according to claim 1, wherein the platform is further rotatable in another vertical plane perpendicular to the vertical plane.

5. A method for transporting an object using the transport mechanism according to any one of claims 1 to 4, comprising the steps of: A scaffolding board for running the transport cart is provided on the stairs, A transportation method characterized by using the towing device positioned above the stairs to raise or lower a pair of transport carts, on which the front and rear of the transported item are positioned, on the scaffolding board along the slope of the stairs.

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