JP2018202999A - Heavy object carrier - Google Patents

Abstract

To provide a heavy object carrier capable of reducing burden on an operator by making it possible to simplify a configuration, reduce the number of components, omit or lessen the switching operation of a transport route, and perform the carrying-in/out operation of a heavy object without requiring labor.SOLUTION: A heavy object carrier comprises: a truck 12 which has a placing table 24 on which a heavy object is placed and travel means 25 which are arranged on four corners of the placing table 24 and can be changed in direction respectively; a guide rail 14 which is installed along a preset transport route 13 and makes the truck 12 travel along the transport route 13; advancing direction changing parts 32 which are arranged to project from each travel means 25 of the truck 12 toward the center of the width direction of the truck 12 and change the direction of each travel means 25 so as to travel along the guide rail 14 by contacting with an outer side face of the guide rail 14; and pulling means 15 which connects the truck 12 to one or both of a starting-point side and an ending-point side of the transport route 13, and makes the truck 12 travel along the tranport route 13.SELECTED DRAWING: Figure 1

Description

The present invention relates to a heavy article transport device including a carriage on which a heavy article is placed and transported (transported).

One method of transporting heavy objects of several tons is to use a cart that is manually pushed by a person. For example, when replacing a stave cooler used in a blast furnace, a stave cooler that is a heavy object is transported by a carriage, but a predetermined number of stave coolers must be replaced in a short time. However, because the number of openings for carrying in and out the stave cooler provided in the blast furnace is the minimum number and size, it is necessary to change the direction and select the route during the transportation. The neighborhood is narrow and dark, and it is dangerous if workers are congested.
Therefore, for example, in Patent Document 1, a carriage provided with wheels that can be arbitrarily adjusted independently at each of the four corners of a placing table on which a heavy object is placed, and a preset conveyance route are provided. Installed guide rails that allow the carriage to travel along the transport route, and installed along the transport route so as to be located on both sides of the cart in the width direction, aligning the direction of each wheel with the traveling direction of the cart, and the carriage from the transport route There is described a heavy material transport device having auxiliary rails that prevent the vehicle from deviating and traction means that is provided on the cart and moves the cart along the transport route.

JP, 2006-124353, A

However, since auxiliary rails are required on both sides of the transport route, there is a problem that the number of parts increases, resulting in lack of mass productivity and workability. In addition, when the transport route is branched, switching work is required at the branch point, and the guide rail and auxiliary rail for removing a part of the guide rail and auxiliary rail of one route and connecting to the other route Has to be installed, which is troublesome and lacks workability.
The present invention has been made in view of such circumstances, and can simplify the configuration, reduce the number of parts, omit or reduce the transfer route switching operation, and load and unload heavy objects without trouble. An object of the present invention is to provide a heavy material transport device that can perform work and can reduce the burden on an operator, and is excellent in mass productivity, workability, labor saving, and space saving.

The heavy-duty conveyance device according to the present invention that meets the above-mentioned object is a carriage provided with a placing table for placing a heavy article and traveling means that are provided at four corners of the placing table and each of which is capable of changing direction,
A guide rail that is installed along a preset transport route and that allows the cart to travel along the transport route;
A traveling direction changing portion that protrudes from the traveling means of the carriage toward the center in the width direction of the carriage and changes the direction of the traveling means so as to be in contact with the outer surface of the guide rail and along the guide rail. When,
There is a traction means for connecting one or both of the starting point side and the ending point side of the transport route and the cart and moving the cart along the transport route.
As a result, the carriage can be reliably guided only by the guide rail and can be driven along the transfer route without deviating from the transfer route. Even if the transfer route is curved, each traveling direction is changed by the traveling direction changer. It is possible to change the direction of the means, there is no need to install auxiliary rails along the conveyance route on both sides in the width direction of the carriage as in the past, and the number of parts and the installation area of the conveyance route can be reduced. Excellent mass production at low cost.
Since the traveling direction changing portion for changing the direction of the traveling means is provided so as to protrude from each traveling means of the carriage to the center side in the width direction of the carriage, there is no protrusion on the outside of the carriage, the handling property is improved, and the width of the carriage is increased. And the width of the conveyance route for running the carriage can be reduced, and the compactness is excellent.
Since the carriage can be moved along the transport route by towing means, there is no need to manually push the carriage to move it or change its direction, and it is possible to smoothly carry in and out heavy objects even in confined or dark places. It is possible to improve the work efficiency, and it is excellent in safety and labor saving.

Here, the pulling means may be any means that can pull the carriage and move it along the transport route. However, the connecting member such as a wire or a chain is wound by a winder such as a winch or a chain winder. What is taken is preferably used.
At this time, when the winding machine is installed and fixed one by one on the starting side and the ending side of the guide rail, and the tip of the connecting member pulled out from each winding machine is connected and fixed to the front side and the rear side of the carriage, respectively, If the winder is installed and fixed one by one on the front side and the rear side of the carriage, and the tip of the connecting member pulled out from each winder is fixed on the start and end sides of the guide rail, Since it can be reciprocated along the conveyance route, it is possible to carry out the unloading and loading operations on one conveyance route, and it is excellent in labor saving and space saving.
However, depending on the case, one winder may be installed and fixed on either the starting point side or the ending point side of the guide rail, and the tip of the connecting member may be connected and fixed to the cart side. The winder may be installed and fixed on the carriage side, and the tip of the connecting member may be fixed to either the starting point side or the ending point side of the guide rail.
In addition, when installing a winder in a trolley | bogie, it is preferable to attach a winder to the front-end side and rear-end side of a mounting base so that the heavy article mounted in a mounting base and a winding machine may not interfere. In particular, when the winder is mounted so as not to protrude upward from the upper surface of the mounting table, it is easy to load and unload heavy objects, and it is possible to transport even heavy objects whose bottom surface is larger than the upper surface of the mounting table, Excellent handleability.

In the heavy-duty conveying apparatus according to the present invention, two traveling means connected to the front and rear of the carriage are connected to the left and right traveling means to synchronize the direction change of the connected left and right traveling means. It is preferable to have a part.
In the area where the conveyance route is curved, the traveling direction changing portion of the traveling means located on the inner side of the curve (the right side for the right curve and the left side for the left curve) of the left and right traveling means is the outer surface of the guide rail. The traveling means changes its direction so as to follow the guide rail. Therefore, if the left and right traveling means are connected to each other at the front and rear of the carriage by the traveling means connecting portions, the traveling means positioned inside the curve changes its direction of travel regardless of whether the conveyance route is curved left or right. When the direction is changed by the action of the part, the traveling means located on the outside of the curve changes direction in synchronism, so the carriage can be moved along the conveyance route, the freedom of installation of the conveyance route, traveling Excellent stability.
Since the traveling means connecting portions that synchronize the direction change of the left and right traveling means are provided at two places in the front and rear, even if the traveling direction of the carriage is changed back and forth, the traveling means connecting portion on the traveling direction side smoothly changes the direction. And the carriage can be moved back and forth along the transport route.

Here, the travel means connecting portion may be anything that connects the travel means so that the direction change of the left and right travel means is synchronized. Note that the cross-sectional shape and size of the travel means connecting portion can be appropriately selected, and may be plate-shaped or pipe-shaped (hollow) as long as they have sufficient rigidity.

In the heavy article conveyance device according to the present invention, it is preferable that each of the traveling direction changing portions has one traveling direction changing roller that abuts on an outer surface of the guide rail.
In each traveling direction changing portion, when a plurality of traveling direction changing rollers that contact the outer surface of the guide rail are arranged along the longitudinal direction of the guide rail, the direction of the traveling means changes depending on the curvature of the curve of the conveyance route. May be hindered. However, when each traveling direction changing portion has one traveling direction changing roller, the moving direction changing roller does not hinder the direction change of the traveling means, and the direction change can be smoothly performed and the traveling stability can be improved. Can be improved.

In the heavy article conveyance device according to the present invention, the interval between the guide rails adjacent to each other on the conveyance route that includes a plurality of the conveyance routes and is arranged in parallel is less than ½ of the width of the carriage. It is preferably wide and narrower than the width of the carriage.
Since the conveyance route is configured such that only the guide rail is provided at the center in the width direction of the traveling floor, a plurality of conveyance routes can be arranged close to each other, and the space saving property is excellent. Therefore, instead of using one transport route as the main route and branching a plurality of sub-routes from there, a heavy load is transported between one start point or end point and a plurality of end points or start points. In addition, the starting point side or the ending point side of a plurality of transport routes are brought close to each other, a part of the transport route is arranged in parallel, and heavy objects are transported between the end point side or the starting point side of a plurality of places through each transport route. Therefore, it is not necessary to provide a branch point on the transport route, and the switching operation of the sub route is not necessary, and the work efficiency can be improved.
In addition, when some of the plurality of transport routes are arranged in parallel, if the distance between adjacent guide rails on the transport route arranged in parallel is wider than the width of the carriage, the transport route arranged in parallel Even if the carts pass simultaneously, the carts do not come into contact with each other, but even if the distance between adjacent guide rails is narrower than the width of the carts and is wider than half the cart width, the carts are adjacent. There is no interference with the matching guide rail. Therefore, a plurality of transport routes can be obtained by shifting the timing at which the carriages moving on the plurality of transport routes pass through the sections arranged in parallel, that is, not passing simultaneously on the transport routes arranged in parallel. Any of these can be selected and used effectively, and the installation area of the transport route can be greatly reduced.

In the heavy goods transport device according to the present invention, it is preferable that the transport route has a main route and a plurality of sub-routes branched from the main route.
Thereby, a heavy article can be conveyed between the one origin side or end point side, and the several end point side or origin side, and an installation area is reduced rather than installing several independent conveyance routes. It is excellent in space saving and installation flexibility. In addition, since a plurality of sub-routes branch from the main route, depending on which sub-route the cart travels, it is necessary to switch the guide rail at the branch point, but there is no conventional auxiliary rail, Switching work can be easily performed by removing and installing only some of the guide rails, reducing labor and improving workability and labor saving.

The heavy-duty conveying apparatus according to the present invention can simplify the configuration to reduce the number of parts, can omit or reduce the transfer route switching work, and can carry in and out heavy-weight work without labor. It is possible to reduce the burden on the user and improve mass productivity, workability, labor saving, and space saving.

It is a principal part top view of the heavy article conveyance apparatus which concerns on one embodiment of this invention. It is a principal part front view of the same heavy article conveyance apparatus. It is a principal part side view of the heavy article conveyance apparatus. It is explanatory drawing of the use condition of the same heavy article conveyance apparatus. It is explanatory drawing at the time of applying the heavy article conveyance apparatus to the replacement | exchange operation | work of the installation object of a blast furnace. It is explanatory drawing of the installation condition of the conveyance route which concerns on a modification.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 to 5, a heavy article transport device 10 according to an embodiment of the present invention places and installs an installation (here, a stave cooler) that is an example of a heavy article in a blast furnace 11. And the guide rails 14, 14 a, 14 b, 14 c installed along the preset transport routes 13, 13 a, 13 b, 13 c, and the cart 12 along the transport routes 13, 13 a, 13 b, 13 c Traction means 15 to be moved. The transport routes 13 and 13a are formed with parallel portions 16 and 16a partially arranged in parallel, and the transport routes 13b and 13c are parallel portions 17 and 17a partially disposed in parallel. Is formed.
Hereinafter, the front and rear direction of the carriage 12 will be described as a traveling direction of the carriage 12, and the width direction of the carriage 12 will be described in detail as a direction orthogonal to the traveling direction of the carriage 12.

As shown in FIG. 5, the installation site of the heavy article transport device 10 is on the work floors 18 and 19 installed around the blast furnace 11.
The height positions of the work floors 18 and 19 are approximately the same as the deck 20 installed at a predetermined height position of the blast furnace 11. The deck 20 is used for carrying out used installations (hereinafter also referred to as used installations) from the blast furnace 11 furnace and unused (new) installations (hereinafter also referred to as unused installations). It is installed in front of the loading / unloading port 21 (outside the furnace) for carrying in the blast furnace 11. A plurality (four in this case) of the carry-in / out ports 21 are provided in the blast furnace 11.

As shown in FIGS. 1 to 3, an iron plate (an example of a traveling floor) 22 is attached and fixed on the work floor 18, and the guide rail 14 is installed along the transport route 13 on the plate 22. Has been.
As shown in FIGS. 1 to 5, the guide rail 14 enables the carriage 12 to travel along the transport route 13. The guide rail 14 is formed in a concave shape in cross section, and is installed at the center in the width direction of the carriage 12 (below the carriage 12) in plan view.
In addition, although the conveyance route 13a and the guide rail 14a are also installed on the work floor 18 as shown in FIG. 5, since it is the same structure as the conveyance route 13 and the guide rail 14, description is abbreviate | omitted.
Further, similarly to the work floor 18, an iron plate 22 is mounted and fixed on the work floor 19, and guide rails 14 b and 14 c are installed on the plate 22 along the transport routes 13 b and 13 c. Since both have the same configuration as the transport route 13 and the guide rail 14, the description thereof is omitted.
In FIG. 5, each of the transport routes 13, 13 a, 13 b, and 13 c mainly transports used installation items out of the work floors 18 and 19 from the carry-in / out entrances 21, and unused installation items out of the work floors 18 and 19. Is a route for carrying into each carry-in / out entrance 21.
Hereinafter, in the present embodiment, description will be made assuming that the carry-in / out entrance 21 side of each of the transport routes 13, 13 a, 13 b, and 13 c is the start side, and the opposite side is the end point side.

As shown in FIGS. 1-4, the trolley | bogie 12 which drive | works on the above-mentioned board 22 is provided with the mounting base 24 which mounts a heavy article, and the driving means 25 provided in the four corners.
The mounting table 24 has a rectangular shape in plan view, and is configured using, for example, a plurality of angles. Each traveling means 25 includes two iron rollers (an example of wheels) 26, a single shaft 27 provided with the rollers 26, and a support frame 28 that rotatably supports both sides of the shaft 27. And a turntable 29 that is rotatably provided on the upper portion of the support frame 28.
Since the upper surface of the turntable 29 of the traveling means 25 is attached to the bottom surface of the mounting table 24, each traveling means 25 easily turns around the rotation axis of the turntable 29 to direct the roller 26 in the traveling direction. be able to. The traveling means 25 only needs to have a direction changing function and is provided at the four corners of the mounting table 24 in principle, but the configuration is not particularly limited. For example, in each traveling means 25, the number of rollers 26 provided on one shaft 27 may be increased or decreased, or a plurality of shafts 27 provided with the rollers 26 may be attached to the support frame 28 in parallel. .
In addition, a pair of left and right central guide portions 30 are attached and fixed to the mounting table 24 at both ends in the front-rear direction of the carriage 12 and at the center in the width direction of the carriage 12. A guide roller 31 is attached to each central guide portion 30 so that the rotation axis is in the vertical direction, and both outer side surfaces of the guide rail 14 are sandwiched from outside in the width direction by the guide rollers 31 of the central guide portion 30. Is arranged. As the guide roller 31, a cam follower (a bearing with a shaft in which a needle bearing is incorporated, the same applies hereinafter) is preferably used.

A travel direction changing portion 32 is provided on the support frame 28 of each traveling means 25 on the center side in the width direction of the carriage 12. The traveling direction changing portion 32 is composed of an arm portion 33 that protrudes from the support frame 28 of each traveling means 25 toward the center in the width direction of the carriage 12, and a cam follower or the like that is attached to the distal end portion of the arm portion 33. A moving direction changing roller 34 is provided. The traveling direction changing roller 34 is attached so that the rotation axis is in the vertical direction, and the traveling direction changing roller 34 abuts on the outer surface of the guide rail 14, thereby causing each traveling means 25 to move to the guide rail 14. The direction can be changed along.
Further, the left and right traveling means 25 in front and rear of the carriage 12 are connected by a plate-like traveling means connecting portion 35. With respect to the connecting arm 36 provided on the support frame 28 of the left and right traveling means 25, both end portions of the traveling means connecting portion 35 are pivotally supported by the shaft support portions 37, thereby connecting the left and right traveling means 25. Can be synchronized.

For example, as shown in FIG. 4, in the region where the conveyance route 13 curves to the right with respect to the traveling direction of the carriage 12, the travel of the travel means 25 located on the inner side (right side) of the left and right travel means 25. The direction changing portion 32 abuts on the right outer surface of the guide rail 14, and the right traveling means 25 changes direction along the guide rail 14. At this time, since the left and right traveling means 25 are connected by the traveling means connecting portion 35, the traveling means 25 located on the outside (left side) of the curve changes direction in synchronism, and the traveling direction changing portion of the traveling means 25 The carriage 12 can be moved along the guide rail 14 in a state where the carriage 32 is also in contact with the left outer surface of the guide rail 14.
When the iron plate 22 and the iron roller 26 are in contact with each other, the coefficient of friction can be reduced. Therefore, the rotation direction of the roller 26 and the direction (traveling direction) in which the carriage 12 actually travels do not exactly match. In addition, the carriage 12 can travel along the guide rail 14.
In the present embodiment, the protruding direction of the connecting arm 36 of each traveling means 25 is the front direction or the rear direction of the carriage 12, but the length or protruding direction of the connecting arm 36 (inclination with respect to the longitudinal direction of the carriage 12). The angle) can be selected as appropriate as long as the left and right traveling means 25 can smoothly turn and change direction.

As shown in FIGS. 1 to 5, traction means 15 is attached in front of and behind the carriage 12. Each traction means 15 includes a wire (an example of a connecting member) 38 and an electric winch (an example of a winder) 39 that winds and unwinds the wire 38. The distal ends of the wires 38 are connected to both ends of the carriage 12 in the front-rear direction, and electric winches 39 are installed on both the starting point side and the ending point side of the transport route 13.
Thereby, the carriage 12 can be pulled and moved by selectively driving the electric winch 39 installed on the starting point side and the ending point side of the transport route 13 and winding the wire 38. At this time, since the wire 38 is disposed in the concave portion 40 of the guide rail 14 having a concave cross section, the carriage 12 is lifted by the pulling force applied when the wire 38 is wound even when the conveyance route 13 is curved. Thus, the cart 12 can be pulled toward the electric winch 39 that winds the wire 38 along the transport route 13.

In this embodiment, the electric winch 39 is installed on both the starting point side and the ending point side of the transport route 13, but depending on the case, it can be installed only on either the starting point side or the ending point side. . In addition, the electric winch 39 can be attached and fixed to the carriage 12 and the tip of the wire 38 can be attached and fixed to the starting point side and / or the ending point side of the transport route 13.
By configuring the heavy-duty conveying device 10 as described above, the structure can be simplified, the vehicle height of the carriage 12 can be lowered, and the loading and unloading work of heavy objects can be easily performed, and the conveying ability can also be improved ( The weight that can be transported can also be increased.) The vehicle height of the carriage 12 (the height from the surface of the plate 22 to the upper surface of the mounting table 24) is not particularly limited, but can be, for example, 30 cm or less, and further 20 cm or less.

Next, a heavy material transport method using the heavy material transport device 10 according to an embodiment of the present invention will be described with reference to FIG.
In FIG. 5, the transport routes 13, 13 a, 13 b, and 13 c are set starting from the respective carry-in / out entrances 21. However, the guide rails 14 and 14 a adjacent to each other in the parallel portions 16 and 16 a of the transport routes 13 and 13 a are set. The interval and the interval between the guide rail 14b and the guide rail 14c adjacent to each other in the parallel portions 17 and 17a of the transport routes 13b and 13c are wider than 1/2 of the width of the carriage 12 and narrower than the width of the carriage 12. The installation area is reduced. As a result, the carriage 12 cannot pass or overtake at the parallel portions 16 and 16a of the transport routes 13 and 13a and the parallel portions 17 and 17a of the transport routes 13b and 13c, so that, for example, the origin side of the transport routes 13 and 13b, and The trolleys 12 are installed on the end points of the transport routes 13a and 13c, respectively, and the trolleys 12 run alternately at the parallel portions 16 and 16a of the transport routes 13 and 13a and the parallel portions 17 and 17a of the transport routes 13b and 13c. To do.

For example, when the carriage 12 traveling on the transportation route 13 is located on the carry-in / out entrance 21 side of the blast furnace 11 on the starting side and the carriage 12 traveling on the transportation route 13a is located on the end point side, first, the transportation route An unused installation object such as a stave cooler is placed on the mounting table 24 of the carriage 12 located on the end point side of 13a, pulled by the electric winch 39 on the starting side, and the unused installation object is lowered by the deck 20, and from the carry-in / out entrance 21 Installation work on the blast furnace 11 is performed. At this time, used equipment such as a stave cooler removed from the blast furnace 11 is placed on the mounting table 24 of the carriage 12 located on the starting point side of the transport route 13 and pulled by the electric winch 39 on the end point side. After the carriage 12 traveling on the route 13a passes through the parallel portion 16a, the carriage 12 traveling on the transport route 13 enters the parallel portion 16, and the used installation object is lowered on the end point side.
Next, the unused installation object is placed on the mounting table 24 of the carriage 12 where the used installation object is lowered on the end point side of the transport route 13, pulled by the electric winch 39 on the starting point side, and the unused installation object is removed by the deck 20. Lowering and installation work from the loading / unloading port 21 to the blast furnace 11 is performed. At this time, the used installation removed from the blast furnace 11 is placed on the mounting table 24 of the carriage 12 where the unused installation is lowered on the starting point side of the transfer route 13a, and is pulled by the electric winch 39 on the end point side. After the carriage 12 traveling on the route 13 passes through the parallel section 16, the carriage 12 traveling on the transport route 13a enters the parallel section 16a, and the used installation object is lowered on the starting side.
By carrying out operations similar to the above in parallel on the transport routes 13b and 13c on the work floor 19, it is possible to efficiently carry in and out heavy objects in a short time.

Next, a modified example of the transport route will be described.
In FIG. 5, the transport routes 13, 13 a, 13 b, and 13 c are independent over the entire length, and some of the parallel parts 16, 16 a and the parallel parts 17, 17 a have guide rails 14, 14 a, and guide rails 14 b. 14c are arranged next to each other.
However, a sufficient installation space cannot be secured, and it may be difficult to install two transport routes (guide rails) in parallel. In that case, as shown in FIG. 41 can be configured to branch from one main route 42 to two sub routes 42a and 42b. Guide rails 43 are installed on the main route 42, and guide rails 43a and 43b are installed on the sub routes 42a and 42b, respectively. Further, a branching portion 44 between the main route 42 and the sub routes 42a and 42b has a branch rail 45a connecting the main route 42 and the sub route 42a or a branch rail 45b connecting the main route 42 and the sub route 42b. Either one is installed.
That is, when the carriage 12 travels on the sub route 42a, the branch rail 45a is installed and the branch rail 45b is removed, and when the cart 12 travels on the sub route 42b, the branch rail 45b is installed and the branch rail 45a is removed. To remove.
As described above, depending on which of the sub-routes 42a and 42b the carriage 12 travels, an operation (switching operation) is required in which one of the branch rail 45a and the branch rail 45b is installed at the branch portion 44 and the other is removed. The installation route can be reduced by using only one main route 42 in the transport route 41, and it is possible to perform switching work by removing and installing only some of the guide rails, thereby minimizing the burden on the operator. Can be limited.

Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations described in the above-described embodiments, and can be considered within the scope of the matters described in the claims. Other embodiments and modifications are also included.
For example, in the above-described embodiment, a case has been described in which a heavy object to be transferred by the heavy object transfer device is an installed object of a blast furnace, but a heavy object (weight is, for example, about several tons to several tens of tons) If there is, it is not limited to this. Therefore, the installation location of the heavy-duty conveyance device can be selected as appropriate according to the heavy-duty object to be conveyed.
Further, in the above-described embodiment, the case where two adjacent transport routes are installed in parallel is described. However, the number and arrangement of the transport routes are appropriately determined depending on the usage. Can be changed.
For example, there may be only one conveyance route, or a straight conveyance route without a curve. In the case of a straight conveyance route without a curve, it is not necessary to change the direction of the traveling means, but by having a traveling direction changing part, the carriage does not tilt even if an external force is applied during traveling, so that the guide rail Deviation from can be effectively prevented.
In the embodiment, the guide rail having a concave cross section is used. However, for example, two I-shaped steels may be arranged in parallel with a gap therebetween to form a guide rail. It does not need to be connected. In addition, you may use a chain instead of a wire as a connection member of a traction means.

Moreover, in the said embodiment, although the roller which comprises a wheel was made into iron, depending on the use environment (situation of a floor surface) of a heavy article conveyance apparatus, a wheel made from urethane or nylon may be used, for example. it can.
Furthermore, in the above-described embodiment, the case where one carriage is used for each conveyance route has been described. However, a plurality of carriages can be used for one conveyance route. In this case, a plurality of carts may be connected and used. In addition, when using several trolley | bogies, the structure (for example, the width | variety and length of a mounting base) of each trolley | bogie may be the same or different.
In the above modification, the case where two sub routes are branched from one main route has been described. However, three or more sub routes may be branched from one main route. The route may be further branched from the route.

10: Heavy goods transfer device, 11: Blast furnace, 12: Bogie, 13, 13a, 13b, 13c: Transfer route, 14, 14a, 14b, 14c: Guide rail, 15: Traction means, 16, 16a, 17, 17a: Parallel part, 18, 19: work floor, 20: deck, 21: carry-in / out entrance, 22: plate (traveling floor), 24: mounting table, 25: traveling means, 26: roller (wheel), 27: shaft, 28: Support frame, 29: turntable, 30: central guide part, 31: guide roller, 32: traveling direction changing part, 33: arm part, 34: traveling direction changing roller, 35: traveling means connecting part, 36: connecting part Arm: 37: Shaft support, 38: Wire (connection member), 39: Electric winch (winding machine), 40: Recess, 41: Transfer route, 42: Main route, 42a, 42b: Sub route, 43, 43a, 4 b: the guide rail, 44: branch portion, 45a, 45b: the branch rail

Claims (5)

A carriage provided with a placing table for placing a heavy object and traveling means provided at four corners of the placing table, each of which is capable of changing direction;
A guide rail that is installed along a preset transport route and that allows the cart to travel along the transport route;
A traveling direction changing portion that protrudes from the traveling means of the carriage toward the center in the width direction of the carriage and changes the direction of the traveling means so as to be in contact with the outer surface of the guide rail and along the guide rail. When,
A heavy article transporting apparatus comprising: a traction means for connecting one or both of a starting point side and an ending point side of the transporting route and the cart and moving the cart along the transporting route. . 2. The heavy goods conveyance device according to claim 1, wherein the left and right traveling means are connected to each other in front and rear of the carriage, and two traveling means before and after synchronizing the direction change of the connected left and right traveling means. A heavy article transporting device having a connecting portion. 3. The heavy goods conveyance device according to claim 1, wherein each of the traveling direction changing portions has one traveling direction changing roller that abuts on an outer surface of the guide rail. 4. The heavy article conveyance device according to claim 1, wherein a plurality of the conveyance routes are provided, and an interval between the guide rails adjacent to each other on the conveyance route that is partially arranged in parallel is A heavy article conveying device characterized in that it is wider than ½ of the width of the carriage and narrower than the width of the carriage. The heavy goods conveyance apparatus of any one of Claims 1-3 WHEREIN: The said conveyance route has a main route and several sub route branched from this main route, The heavy goods conveyance apparatus characterized by the above-mentioned.

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