JP5614636B2 - Trolley system - Google Patents

Description

  The present invention relates to a carriage system that is installed on, for example, a girder steel frame of a high-rise structure under construction and moves a jib crane or materials.

Usually, a tower crane is used for building a frame of a steel high-rise structure. By using this tower crane efficiently, the construction period can be shortened.
Tower cranes are used in a variety of ways, including lifting and installation of columns, beams, exterior materials, etc., replacement of peripheral curing, and advance lifting of equipment and finishing materials.
However, in order to further shorten the construction period, the load on the tower crane becomes excessive, and therefore it is necessary to reduce the load on the tower crane.

In order to reduce the load on the tower crane, a crane other than the tower crane is used together, or the number of times of lifting by the tower crane is reduced.
For example, when the weight of the exterior material is light, a small crane or a terha crane is used instead of the tower crane for lifting and installation of the exterior material.
In addition, for example, the steel beam has a weight of about 0.2t to 1.5t, so it is possible to reduce the number of times the tower crane lifts by lifting about 3-5 steel beams. ing.
Further, for example, the floor deck plate and the small beam steel frame, and in some cases, equipment materials are united and lifted to reduce the number of times the tower crane is lifted.

However, even when the beam beams are lifted together, the beam lifting operation accounts for about 30% of the tower crane restraint time.
In addition, since the core portion of the high-rise structure is complicated in the arrangement of the steel frame and difficult to be unitized, parts other than the core are unitized. However, the core portion occupies about 10 to 20% of the high-rise structure. For this reason, even if parts other than a core are unitized, the load of a tower crane cannot be reduced significantly.
Also, there is a method of reducing the load per tower crane by increasing the number of tower cranes, but this is not realistic because of a significant cost increase.

Therefore, in order to reduce the load of the tower crane efficiently, a rail is laid on a pre-fabricated girder steel frame, etc., and a jib crane is placed on the carriage that runs on the rail, and the material is lifted by this jib crane. Or setting up. Since the installation position of the jib crane can be changed by running the carriage, the use range of the jib crane can be widened.
For example, Patent Document 1 discloses a traveling carriage for a jib crane. The traveling carriage of this jib crane is configured such that the rail span on which the traveling carriage travels can be changed, and the members constituting the traveling carriage do not protrude outward from the rail.
Moreover, even when the material lifted to the predetermined floor is transported on the same floor, the material is transported on a carriage that travels on the rail as described above.

Japanese Patent Laid-Open No. 5-32391

However, the conventional cart that travels on the rail has a problem that it takes time to install and remove the rail.
In particular, when rails are laid on a girder steel frame, it is necessary to provide a joint between the rails on the girder steel frame, and it is necessary to provide the beam receiving the rail in accordance with the span of the girder steel frame. Will be produced at the construction site, it will take time to lay the rail.
And since it takes time to install the rails, there is a problem that the jib crane cannot be used efficiently when the jib crane is placed on a carriage and used.
Moreover, since the model and specification of a jib crane will be limited, arbitrary jib cranes may not be used.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a carriage system capable of easily laying and removing rails.

In order to achieve the above object, a cart system according to the present invention includes a cart on which a jib crane or a material can be placed, and a traveling rail that can be attached to and detached from a laying surface, and the cart is disposed along the traveling rail. A dolly system for traveling, wherein the dolly and the running rail move relative to each other along the extending direction of the running rail, and can be attached to and detached from the laying surface. An elevating mechanism that raises and lowers the carriage while being fixed to a surface , and the traveling rail has a flange extending in the extending direction of the traveling rail and parallel to the laying surface. The relative movement mechanism includes a first wheel provided on the carriage and disposed above the flange, and a vertical dimension of the flange provided on the carriage in the vertical direction with respect to the first wheel. A second wheel disposed below the flange with a larger interval, a first spur gear connected to the first wheel and coaxial with the first wheel, and connected to the second wheel. A second spur gear that is coaxial with the second wheel and meshes with the first spur gear; and a drive unit that drives the first wheel; and when the carriage is raised by the elevating mechanism, the traveling A rail is suspended from the carriage and is configured to be separated from the laying surface.

In the present invention, since the relative movement mechanism for moving the carriage and the traveling rail relative to each other in the extending direction of the traveling rail is provided, the carriage is moved along the extending direction of the traveling rail in a state where the traveling rail is fixed to the laying surface. Can be made.
Moreover, since the raising / lowering mechanism which can raise / lower a trolley | bogie in the state fixed to the laying surface was provided, if a trolley | bogie is raised by an raising / lowering mechanism, a traveling rail will be lifted by the trolley | bogie in connection with it and will separate from a laying surface. Thus, in a state where the traveling rail is lifted by the carriage and separated from the laying surface, the traveling rail is easily moved in the extending direction with respect to the laying surface while maintaining the position of the carriage by the relative movement mechanism. be able to.

And since the jib crane can be used or the material can be transported while moving the traveling rail and carriage to the desired position, there is no need to lay many rail materials, and it is easy to lay and remove the traveling rail. It is economical as well.
Furthermore, since it is not necessary to connect a plurality of traveling rails in the extending direction as in the case of conventional traveling rails, management of rail gauges (distance between the traveling rail materials facing each other) is unnecessary, and installation of traveling rails is not necessary. Attached work such as summing out can be made unnecessary.

  In addition, since it is not necessary to connect multiple traveling rails on the girder steel frame, for example, it is not necessary to produce a traveling rail or a traveling rail receiving beam for receiving the traveling rail according to the span of the girder steel frame. Can be repeatedly used and the cost can be reduced.

Moreover, the construction speed of the high-rise structure can be improved, and the construction period of the frame construction can be shortened.
Furthermore, the relative movement mechanism not only allows the carriage to travel along the traveling rail, but also allows the traveling rail to move while maintaining the position of the carriage, so the mechanism and traveling rail that travel the carriage are moved. There is no need to provide a mechanism for each of them, and the cart system can have a simple structure.

Further, in vehicle system according to the present invention, when the front Symbol carriage travels the traveling rail, the first wheel is the flange abuts the second wheel is spaced apart from the flange, the lifting mechanism When the cart is raised, the second wheel is preferably in contact with the flange, the traveling rail is lifted, and the first wheel is separated from the flange.

In this way, the relative movement mechanism includes the first wheel disposed above the flange, the second wheel disposed below the flange, and the first flat wheel connected to the first wheel and coaxial with the first wheel. The drive unit is driven by including a gear, a second spur gear connected to the second wheel and coaxial with the second wheel and meshing with the first spur gear, and a drive unit that drives the first wheel. Thus, the first wheel and the second wheel can be driven.
When the carriage travels on the travel rail, the first wheel is in contact with the flange, so that when the first wheel rotates, the first wheel travels along the flange. It can be moved along the direction.
Further, when the carriage is raised, the second wheel abuts the flange and lifts the traveling rail, so that when the second wheel rotates, the traveling rail lifted by the rotation of the second wheel is sent out. The traveling rail can be moved along its extending direction.

  ADVANTAGE OF THE INVENTION According to this invention, use of a jib crane or conveyance of material can be performed efficiently by laying and moving a traveling rail being easy.

(A) is a side view which shows an example of the trolley | bogie system by embodiment of this invention, (b) is a top view, (c) is a front view. FIG. 2 is a perspective view of the cart system shown in FIG. (A) is a figure which shows a drive unit and a raising / lowering mechanism when moving a trolley | bogie, (b) is the sectional view on the AA line of (a), (c) is the sectional view on the BB line of (a). . It is a figure explaining a notch part. (A) is a figure which shows a drive unit and a raising / lowering mechanism when moving a traveling rail, (b) is CC sectional view taken on the line of (a), (c) is DD sectional view taken on the line of (a). is there. (A) is a side view of a cart system when moving a traveling rail, and (b) is a front view of (a). (A) is a figure explaining operation | movement of a trolley | bogie and a traveling rail when moving a trolley | bogie, (b) is a figure explaining operation | movement of a trolley | bogie and a traveling rail when moving a traveling rail, (c) is a figure explaining a traveling rail. It is a figure explaining other operation | movement of a trolley | bogie and a travel rail when making it move.

Hereinafter, a cart system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.
As shown in FIGS. 1A to 1C and FIG. 2, a cart system 1 according to the present embodiment includes a traveling rail 3 laid on a steel high-rise structure 2 under construction, and a stationary jib crane 4. (Refer to FIGS. 1A and 1C) and a carriage 5 that travels on the traveling rail 3. The carriage 5 includes a mounting portion 51 on which the jib crane 4 is mounted, a drive unit (relative movement mechanism) 52 that moves the traveling rail 3 and the mounting portion 51 relative to each other, and a lift that moves the mounting portion 51 and the drive unit 52 up and down. And a mechanism 53.
In the present embodiment, the high-rise structure 2 under construction is in a state where a large beam steel frame 2a is installed on a certain floor.

Moreover, in this embodiment, 3 floors (not shown) of the high-rise structure 2 are made into 1 section, and it is constructed | assembled for every 1 section. For the lifting operation of the members and the construction work of the high-rise structure 2, a tower crane (not shown) installed in the vicinity of the high-rise structure 2 and the jib crane 4 (FIG. 1 (a ) And (c)).
When the first section is constructed, the carriage system 1 is transferred to the upper beam girder steel frame 2a constructed by the tower crane, and the lifting work and construction work for the upper one section are performed.

(Running rail)
The traveling rail 3 is installed on a plurality of large beam steel frames 2a (laying surface) arranged in parallel on the same horizontal plane, and extends in a direction orthogonal to the extending direction of these large beam steel frames 2a. The running rail 3 is detachably installed on the girder steel frame 2a, and is fixed to the girder steel frame 2a with a fixture (not shown).
The traveling rail 3 includes a pair of traveling rail members 13 and 13 and a holding member 14 (see FIG. 1B) that holds a distance between the pair of traveling rail members 13 and 13 at a predetermined interval.

As shown in FIG. 3A, the traveling rail material 13 is a rail material in which a cross-sectional shape in a plane orthogonal to the extending direction is formed in a substantially I shape, and the lower surface of the lower flange 22 is a steel beam 2a. It is installed in contact with the upper surface.
On the upper surface 21 a of the upper flange 21 of the traveling rail member 13, a rib 24 that protrudes upward and extends in the extending direction of the traveling rail member 13 is provided. A groove 61 a formed on the peripheral surface of the first wheel 61 provided in the carriage 5 is engaged with the rib 24. The first wheel 61 is configured to travel along the rib 24.

  Further, as shown in FIGS. 1A and 1B and FIG. 2, the first wheels 61 (see FIG. 1) moved along the ribs 24 of the upper flange 21 at both ends in the extending direction of the traveling rail member 13. 3 (a)), an end stopper 25 that restricts the movement of the first wheel 61 is provided.

Further, as shown in FIG. 4, a cutout portion 26 is formed in the upper flange 21 of the traveling rail member 13, and a detachable plate 27 capable of closing the cutout portion 26 is provided. The detachable plate 27 can be attached to and detached from the traveling rail member 13 and is attached to the traveling rail member 13 with, for example, a bolt 28 to close the notch portion 26.
As shown in FIG. 3A, the notch 26 is configured such that when the carriage 5 is installed on the traveling rail 3, the second wheel 62 provided on the carriage 5 is installed below the upper flange 21. Therefore, the second wheel 62 is used as a loading / unloading port for loading / unloading the second wheel 62 to / from the upper and lower sides of the upper flange 21 when the carriage 5 is attached / detached to / from the traveling rail member 13.
The cutout portion 26 is closed by the detachable plate 27 except when the second wheel 62 is taken in and out.

(Cart)
As shown in FIGS. 1A to 1C, the carriage 5 includes a mounting portion 51 on which the jib crane 4 is mounted, a drive unit (relative movement mechanism) 52 that relatively moves the traveling rail 3 and the mounting portion 51. And an elevating mechanism 53 that elevates and lowers the mounting portion 51 and the drive unit 52.
As shown in FIG. 1B, the mounting portion 51 is formed in a substantially rectangular plate shape in plan view having a width substantially the same as or larger than the width of the traveling rail 3, and the mounted jib crane 4 (see FIG. 1B). 1 (a) and (c)) can be fixed.

The drive units 52 are respectively attached to the four corners of the lower surface of the placement unit 51. In addition, the drive unit 52 may be attached to a total of six places, three places on each side portion of the lower surface of the placement section 51, or may be provided at a plurality of other places.
As shown in FIGS. 3A to 3C, the drive unit 52 includes a first wheel 61 that can travel along the rib 24 provided on the upper surface 21 a of the upper flange 21 of the traveling rail member 13, and the upper flange 21. A pair of second wheels 62 and 62 capable of traveling along the lower surface 21b of the motor and an electric motor 63 (see FIGS. 1A and 1B) for rotating the first wheel 61 are provided. The pair of second wheels 62 and 62 are disposed at the same height on both sides of the web 23 of the traveling rail member 13.

  Moreover, the 1st wheel 61 and the 2nd wheel 62 are arrange | positioned at predetermined intervals in the perpendicular direction. As shown in FIG. 3A, the predetermined interval is such that when the groove portion 61 a of the first wheel 61 and the rib 24 are engaged and the first wheel 61 and the rib 24 are in contact, the second wheel 62. When the second wheel 62 and the lower surface 21b of the upper flange 21 are in contact with each other as shown in FIG. 5A, the first wheel 61 and the upper flange 21 are separated from each other. The ribs 24 are separated from each other.

  As shown in FIG. 3A, the drive unit 52 includes a sprocket 64 coaxial with the first wheel 61 provided on one side of the first wheel 61, a sprocket 64, and an electric motor 63 (FIG. 1 ( a) and (b)), a first spur gear 66 provided on both sides of the first wheel 61 and connected to the first wheel 61, and second wheels 62, 62. The second spur gear 67 is provided on the opposite side of the traveling rail member 13 facing the web 23 and connected to the second wheel 62.

  The first spur gear 66 is installed coaxially with the first wheel 61 and the second spur gear 67 is installed coaxially with the second wheel 62. The first spur gear 66 and the second spur gear 67 are arranged in the vertical direction, and these teeth mesh with each other. Thus, when the first spur gear 66 rotates, the second spur gear 67 rotates in the direction opposite to the first spur gear 66.

In the drive unit 52 configured as described above, when the electric motor 63 (see FIGS. 1A and 1B) is driven, the first wheel 61 rotates, and the first spur gear 66 rotates together with the first wheel 61. As the first spur gear 66 rotates, the second spur gear 67 rotates in the opposite direction to the first spur gear 66, and the second wheel 62 rotates together with the second spur gear 67. At this time, the rotation directions of the first wheel 61 and the second wheel 62 are opposite to each other.
Here, since the first wheel 61 or the second wheel 62 is configured to come into contact with the upper flange 21 of the traveling rail member 13, the first wheel 61 or the second wheel 62 that comes into contact with the upper flange 21. The cart 5 and the traveling rail member 13 are configured to move relative to each other in the extending direction of the traveling rail member 13 by the rotation.

(Elevating mechanism)
As shown in FIGS. 1, 2, and 3 (a), the elevating mechanism 53 includes a pair of receiving beams 71, 71 provided on both sides of the mounting portion 51, and the mounting portion 51 and the receiving beams 71, The lift-up device 72 is provided between the mounting portion 51 and the receiving beams 71 and 71 and can be adjusted in the height direction.

  The receiving beam 71 is a shape steel such as an I-shaped steel that can be attached to and detached from the large beam steel frame 2 a, extends substantially parallel to the extending direction of the traveling rail 3, and is longer than the length dimension of the mounting portion 51. It is formed to be slightly longer. The receiving beam 71 is formed so as to be longer than the span of the large beam steel frame 2a, and is configured to be supported by two or more adjacent large beam steel frames 2a when installed on the large beam steel frame 2a. ing.

The lift-up device 72 includes an expansion / contraction portion 73 that expands and contracts in the vertical direction, such as a hydraulic cylinder or an electric cylinder. In the present embodiment, two lift-up devices 72 are provided at a predetermined interval in the length direction of the receiving beam 71 with respect to one receiving beam 71.
As shown in FIGS. 5A and 6, the lift-up device 72 causes the mounting portion 51 and the receiving beam 71 to be separated in the vertical direction by the expansion and contraction portion 73 extending in the vertical direction. As shown in a), (c) and FIG. 3A, the mounting portion 51 and the receiving beam 71 are brought close to each other in the vertical direction by the contraction of the stretchable portion 73.

  When the telescopic part 73 is contracted, the receiving beam 71 and the large beam steel frame 2a are in a separated state. At this time, the carriage 5 is placed on the traveling rail 3, the groove 61 a (see FIG. 3A) of the first wheel 61 is engaged with the rib 24 of the upper flange 21, and the second wheel 62 is It is separated from the lower surface 21 b of the flange 21.

And if the expansion-contraction part 73 expand | extends from this state, as shown in FIG.5 and FIG.6, the receiving beam 71 and the large beam steel frame 2a will contact | abut. When the telescopic part 73 is further extended, the lift-up device 72 takes the reaction force from the girder steel frame 2a and raises the placing part 51.
As a result, the groove 61 a (see FIG. 5A) of the first wheel 61 of the drive unit 52 is separated from the rib 24 of the upper surface 21 a of the upper flange 21 of the traveling rail member 13, and the second wheel 62 is the lower surface of the upper flange 21. 21b abuts.
And if the expansion-contraction part 73 further expand | extends, since the 2nd wheel 62 which raises with the mounting part 51 pushes up the upper flange 21 upwards, the traveling rail material 13 will raise and it will be in the state suspended by the trolley | bogie 5. FIG. At this time, it is assumed that the traveling rail member 13 is not fixed to the girder steel frame 2a.

(Installation method of bogie system)
Next, an installation method of the above-described cart system will be described.
First, as shown in FIG. 1, the traveling rail 3 (traveling rail material 13) is suspended on the girder steel frame 2a by a tower crane (not shown) and installed at a predetermined position. And the traveling rail 3 is fixed to the girder steel frame 2a with a fixing tool (not shown).

Subsequently, the carriage 5 is lifted and installed on the traveling rail 3 by a tower crane. At this time, the second wheel 62 of the carriage 5 is inserted below the upper flange 21 from the notch 26 formed in the upper flange 21 of the traveling rail 3 shown in FIG. As a result, the upper flange 21 is positioned between the first wheel 61 and the second wheel 62. After the carriage 5 is installed, the cutout portion 26 is closed with a detachable plate 27.
At this time, the telescopic portion 73 is in a contracted state, the receiving beam 71 and the large beam steel frame 2a are separated from each other, and the groove portion 61a of the first wheel 61 and the rib 24 of the upper flange 21 are fitted. The second wheel 62 is separated from the lower surface 21b of the upper flange 21.
Subsequently, the jib crane 4 (see FIGS. 1A and 1C) is installed on the mounting portion 51 of the cart 5, and the cart system 1 is installed on the girder steel frame 2a.

(How to move the carriage)
Next, a method for moving the carriage 5 in the carriage system 1 installed at a predetermined location will be described.
First, the electric motor 63 (see FIG. 1A) is driven to rotate the first wheel 61. At this time, as shown in FIG. 7 (a), when the first wheel 61 is rotated in the direction of arrow A, the traveling rail 3 is fixed to the girder steel frame 2a (see FIG. 1). 61 travels along the rib 24 in the direction of arrow B, and the carriage 5 moves in the direction of arrow B. Then, the carriage 5 is moved to a predetermined position, and the electric motor 63 is stopped.
Thus, the jib crane 4 (refer FIG. 1 (a), (c)) can be easily installed in a predetermined position by moving the trolley | bogie 5 to a predetermined position.

  At this time, when the first wheel 61 rotates, the first spur gear 66 (see FIG. 2A) rotates, and accordingly, the second spur gear 67 (see FIG. 2A) and the second wheel 62 rotate. Although rotating, the second wheel 62 is separated from the lower surface 21 b of the upper flange 21, so the rotation of the second wheel 62 does not affect the movement of the carriage 5. In addition, even if the 2nd wheel 62 and the upper flange 21 contact | abut when the trolley | bogie 5 is moving, the 1st wheel 61 and the 2nd wheel 62 are a reverse direction (direction of the arrow C in a figure). Therefore, the movement of the carriage 5 is not hindered.

(How to move the bogie system)
Next, a method for moving the cart system 1 on the same floor will be described.
First, fixing of the traveling rail 3 and the large beam steel frame 2a is released. In addition, before and after the fixation between the traveling rail 3 and the large beam steel frame 2a is released, the expansion / contraction part 73 of the lift-up device 72 is extended to bring the receiving beam 71 into contact with the large beam steel frame 2a. At this time, the receiving beam 71 in contact with the large beam steel frame 2a is fixed to the large beam steel frame 2a.
Subsequently, the telescopic portion 73 is further extended to raise the carriage 5, the groove portion 61 a of the first wheel 61 and the rib 24 of the upper flange 21 are separated, and the second wheel 62 and the lower surface 21 b of the upper flange 21 are separated. Make contact. Then, the telescopic part 73 is further extended to push up the traveling rail 3 with the second wheel 62, so that the traveling rail 3 is separated from the girder steel frame 2a (see FIG. 5A).

Subsequently, the electric motor 63 (see FIG. 1A) is driven to rotate the first wheel 61 and the second wheel 62.
At this time, as shown in FIG. 7B, since the traveling rail 3 is in contact with the second wheel 62 and is suspended by the second wheel 62, for example, the second wheel 62 rotates in the direction of arrow C. By doing so, the traveling rail 3 is sent in the direction of arrow D and moves.

At this time, as shown in FIG. 7C, it is assumed that the suspended traveling rail 3 is not horizontal and is inclined obliquely, and the end 3 a side inclined to the upper side of the traveling rail 3 is in contact with the first wheel 61. However, since the first wheel 61 and the second wheel 62 are rotating in the opposite directions, the first wheel 61 can send the traveling rail 3 in the direction of the arrow D.
And if the traveling rail 3 is moved to a desired position, the electric motor 63 will be stopped and the movement of the traveling rail 3 will be stopped.

Subsequently, as shown in FIGS. 1 and 2, the telescopic portion 73 is contracted to lower the carriage 5 and the traveling rail 3 to contact the traveling rail 3 and the girder steel frame 2 a. Further, the expansion / contraction part 73 is further reduced, the groove part 61a of the first wheel 61 and the rib 24 of the traveling rail 3 are fitted, and the second wheel 62 and the lower surface 21b of the upper flange 21 of the traveling rail 3 are separated. Further, the stretchable portion 73 is reduced to separate the receiving beam 71 and the large beam steel frame 2a.
At this time, the traveling rail 3 in contact with the large beam steel frame 2a is fixed to the large beam steel frame 2a with a fixture (not shown).
In this way, the traveling rail 3 is moved to a desired position, and the carriage 5 becomes movable on the traveling rail 3.

Next, the operation of the above-described cart system 1 of the present embodiment will be described with reference to the drawings.
According to the cart system 1 of the present embodiment, the traveling rail 3 can be easily moved, so that it is possible to efficiently use the jib crane 4 installed on the cart 5 without taking time and effort to lay and move the traveling rail 3. Play.
And the load of the tower crane used together can be reduced by making the jib crane 4 efficient.

Further, since the traveling rail 3 can be moved and used on the same floor, it is not necessary to individually manufacture the traveling rail 3 on the site as in the prior art, and the time required for laying the traveling rail 3 can be shortened. , Can reduce the cost.
Furthermore, unlike the conventional bogie system, it is not necessary to connect a plurality of traveling rails 3 in the extending direction, so that management of rail gauges (distance between a pair of opposed traveling rail members 13, 13) is unnecessary. At the same time, incidental work such as ink marking associated with the installation of the traveling rail 3 can be made unnecessary.

Further, since it is not necessary to connect a plurality of traveling rails 3 on the girder steel frame 2a, it is not necessary to manufacture the traveling rail 3 and a traveling rail receiving beam for receiving the traveling rail 3 in accordance with the span of the girder steel frame 2a. . And by forming the traveling rail 3 longer than one span of the girder steel frame 2a, it can be diverted repeatedly and the cost can be reduced.
Moreover, since it is a system which mounts the jib crane 4 on the trolley | bogie 5, the jib crane 4 of an optimal specification can be selected for every field.

As mentioned above, although embodiment of the trolley | bogie system 1 by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the above-described embodiment, the traveling rail 3 is installed on the large beam steel frame 2a, but may be installed on a floor slab or the like.
Further, in the embodiment described above, the jib crane 4 is placed and moved on the carriage 5, but instead of the jib crane 4, the material may be carried on the carriage 5 by traveling on the carriage 5. Good.

DESCRIPTION OF SYMBOLS 1 Carriage system 2a Large beam steel frame 3 Traveling rail 4 Jib crane 5 Carriage 13 Traveling rail material 21 Upper flange 52 Drive unit (relative movement mechanism)
53 Lifting mechanism 61 First wheel 62 Second wheel 63 Electric motor (drive unit)
66 First Spur Gear 67 Second Spur Gear 71 Receiving Beam 72 Lift-up Device 73 Extendable

Claims (2)

A jib crane or a carriage on which materials can be placed;
A running rail that is detachable from the laying surface,
A cart system in which the cart travels along the travel rail,
A relative movement mechanism for moving the carriage and the traveling rail relative to each other along the extending direction of the traveling rail;
An elevating mechanism that can be attached to and detached from the laying surface and that lifts and lowers the carriage in a state of being fixed to the laying surface;
The travel rail is formed with a flange extending in the extending direction of the travel rail and parallel to the laying surface,
The relative movement mechanism includes a first wheel provided on the carriage and disposed above the flange, and a first wheel provided on the carriage and perpendicular to the first wheel in a vertical direction. A second wheel disposed below the flange with a dimension interval, a first spur gear connected to the first wheel and coaxial with the first wheel, and the second wheel connected to the second wheel. A second spur gear that is coaxial with the wheel and meshes with the first spur gear, and a drive unit that drives the first wheel,
The cart system is configured such that when the cart is lifted by the lifting mechanism, the traveling rail is lifted by the cart and separated from the laying surface. When the carriage travels on the traveling rail, the first wheel comes into contact with the flange, and the second wheel is separated from the flange,
When the lifting mechanism raises the carriage, the second wheel comes into contact with the flange, the traveling rail is lifted, and the first wheel is separated from the flange. The trolley system according to claim 1.

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