JP3009385B2 - Transport trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport trolley for transporting a box culvert used for constructing a sewer, a culvert, etc. at a construction site.

[0002]

2. Description of the Related Art When laying box culverts used for constructing sewers and culverts, conventionally,
A method of hanging a crane in an open-cut space is widely used. However, this construction method cannot be used for construction in a narrow place where a crane cannot enter or under a bridge.

In order to solve such a problem,
The present applicant has disclosed Japanese Utility Model Publication No. 1-12525,
JP-A-35095 and JP-A-9-60101 disclose a box culvert conveying method and a laying method using a conveying device.

The method of laying box culverts disclosed in these publications is to lay a concrete subgrade formed on which box culverts are mounted as a transport route. Specifically, laying work is carried out by installing rails on both sides of the concrete subgrade and moving the box culvert to the place where the box culvert is to be laid sequentially while reciprocating the box culvert transport cart along these rails.

[0005] When a transport trolley loaded with box culverts arrives at the place where it is to be laid, the box culverts are lowered from the transport trolley and mounted on the roadbed, the mounting position must be adjusted. The adjustment of the direction can be performed by moving the transport trolley along the rail, and the adjustment in the cross-rail direction can be performed by operating a traverse device provided on the transport trolley. Further, vertical adjustment can also be performed by operating a lifting jack provided on the transport carriage.

By adopting the box culvert laying method using such a transport cart, the box culvert laying work can be performed efficiently in a narrow place or under a bridge, and the safety can be improved.

[0007]

Problems to be Solved by the Invention
Gazette, Japanese Patent Publication No. Hei 2-35095, JP-A-9-60
In the box culvert laying method disclosed in Japanese Patent Publication No. 101, a box culvert is loaded on a transport trolley and transported to a place where the laying is to be laid. If the box culvert is placed on a roadbed, it may be difficult to adjust the placement position depending on the loaded state of the box culvert.

In other words, the box culverts loaded and transported on the transport trolley must be placed on the subgrade at the place where they are to be laid, so as to closely contact the already laid box culverts without any gaps. If the box culvert mounted on the vehicle is not in a state parallel to the existing box culvert, the adjustment work requires a great deal of labor.

In other words, the conventional transport trolley cannot move the loaded box culvert so as to rotate about the vertical axis. Therefore, if the transported box culvert is not parallel to the existing box culvert, It is extremely difficult to adjust the installation position. In addition, such an adjustment operation needs to be performed manually, and thus involves risks.

Therefore, an object of the present invention is to solve the problem that when a conveyed object such as a box culvert is conveyed to a destination and mounted thereon, the operation of adjusting the mounting position can be performed easily and safely. To provide a truck.

[0011]

SUMMARY OF THE INVENTION The present invention provides two rails.
A pair of traveling portions each capable of traveling along the
Conveyance arranged to be able to move up and down on each of a pair of traveling parts
A loading section and a link for integrally connecting the pair of traveling sections to each other;
A transport trolley comprising:
Between the part and the connecting member, the pair of traveling members
Movable joints that can slide in each direction of travel
And connected, between the pair of running parts and the connecting member,
The pair of traveling parts are slid through the movable connecting part.
And a slide drive mechanism for causing the slide drive mechanism .

[0012] With this configuration, each traveling section can slide independently of the connecting member along the rail. Therefore, by moving one traveling section along the rail, the load can be moved vertically. It can be rotated about the axis. Therefore, it is possible to easily perform an adjustment operation such that a box culvert or the like conveyed to the scheduled installation site is made parallel to the existing box culvert. In addition, since the adjustment operation can be performed by sliding the traveling unit along the rail, the safety is high.

[0013] In the transport cart of the present invention, the slide
The drive mechanism appropriately stops the sliding function of the movable connecting portion.
A possible configuration can be adopted. That is, if the movable connecting portion slides freely while the transporting trolley loaded with the transported material such as the box culvert is traveling along the rail, the traveling becomes unstable or the traveling portion and the connecting member are displaced. Although the transported object may be inclined or fall off, the slide drive mechanism can
Since it can be stopped as appropriate, it is possible to improve the stability during traveling, and it is possible to prevent the transported object from being inclined or falling off. In this case, as a mechanism for sliding the movable connecting portion, hydraulic jacks, a screw-type manual feeder, or the like can be suitably used.

On the other hand, the transporting cart according to the present invention may have a structure in which the transporting section is provided with a lifting mechanism for lifting and lowering the transported product. By adopting such a structure, it is possible to efficiently carry out loading / unloading operations of a conveyed object such as a box culvert, particularly when a box culvert conveyed to a destination is placed at a predetermined position. Workability is improved. In this case, a hydraulic jack, an electric jack, or the like can be suitably used as the elevating mechanism.

By providing such an elevating mechanism, when a conveyed object conveyed to the destination is placed at a predetermined point, if there is a height difference between the mounting surface and the rail position, the height difference is of course. Even if there is no workability, the workability is good.

Further, in the transport cart according to the present invention, the transport object
Rotate the loading section around the lifting rod of the jack of the lifting mechanism
It can be made possible or a structure that can be moved in a direction perpendicular to the rail . By adopting such a structure, when a work such as a box culvert conveyed to the destination is placed at a predetermined point, the work of adjusting the placement position becomes easy, and the work can be placed at an accurate position. become.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a transport cart according to an embodiment, FIG. 2 is a side view of the transport cart, FIG.
FIG. 4 is a rear view of the transport trolley, and FIG. 4 is a partially cutaway plan view of the transport trolley.

The transport cart 10 of the present embodiment comprises two rails 11, 1 laid on a box culvert transport route.
Two traveling sections 13 and 14 that can travel along the traveling section 2, and article loading sections 15 and 16 provided on the traveling sections 13 and 14,
And a connecting member 17 for connecting the running parts 13 and 14.

Further, the the traveling portions 13 and 14 and the connecting member 17 and the movable connector part 30 which slidably coupled to each other, as a slide driving mechanism Ru slide the movable coupling part 30
And an operation panel 19 for operating the transport carriage 10 is arranged on the connecting member 17. In addition, in the movable connection part 30, the traveling parts 13, 1
The connecting member 4 and the connecting member 17 are slidably connected via a connecting member 32 having a C-shaped cross section.

Further, the traveling parts 13 and 14 constituting the transporting carriage 10 have wheels 22 driven by a motor 21 and jacks 23 for lifting and lowering the transported article loading parts 15 and 16.
Is provided. These transported article loading sections 15, 16
Is rotatable around a lifting rod 23a of the jack 23 . In addition, the transported article loading units 15 and 16 are
It may be possible to move in the direction perpendicular to 1 and 12 .

With such a configuration, the transport carriage 10
Is a box culvert 2 on the loading sections 15 and 16
4 can be driven along the rails 11 and 12 laid on both sides of the roadbed 25 by using the motor 21 as a power source, and transports the box culvert 24 to a place where it is to be laid. Work can be performed efficiently and safely.

Further, since a movable connecting portion 30 is provided at a connecting portion between the traveling portions 13 and 14 and the connecting member 17, a movable connecting portion 30 is provided.
By operating the hydraulic jack 31, the traveling unit 1
3 and 14 can be slid independently of the connecting member 17 along the rails 11 and 12, for example, by moving one of the traveling sections 13 along the rail 11, the loaded box culvert 24 is moved vertically. It can be moved to rotate to the center.

Here, referring to FIG.
The operation of adjusting the mounting position of the box culvert 24 by sliding the box will be described. FIG. 5 is an explanatory view showing a transfer operation by the transfer cart 10.

As shown in FIG. 5 (a), the transport carriage 10
When the box culvert 24 loaded and transported to the place where it is to be laid is not parallel to the existing box culvert 34, the movable connecting portion 30 of one of the traveling portions 13 is slid, as shown in FIG. In addition, the box culvert 24 can be made parallel to the existing box culvert 34. In this case, the movable connecting portion 30
As shown in FIG. 4, since the slide is performed by the hydraulic jack 31, the burden on the operator is light and the safety is high.

As described above, in the carrier 10,
By sliding one of the movable connecting portions 30, the loaded box culvert 24 can be moved so as to rotate about the vertical axis. Therefore, an adjustment operation when the box culvert 24 is not parallel to the existing box culvert 34 Can be easily performed. Therefore, the transported box culvert 24 can be placed on the subgrade 25 in a state where the box culvert 24 is in close contact with the existing box culvert 34 without any gap.

In the transport carriage 10, the movable connecting portion 30 slides by operating the jack 31, but when the jack 31 is stopped, the traveling portion 1 is moved.
3, 14 and the connecting member 17 are firmly fixed. Therefore, when the transport cart 10 loaded with the box culverts 23 travels along the rails 11 and 12, the movable connecting portion 30 does not slide without permission, and stable traveling can be ensured. Traveling part 1
There is no danger that the box culvert 23 will be inclined or fall off due to the displacement of the connecting members 17 with the connecting members 17. It should be noted that a screw-type manual feeder or the like may be employed instead of the hydraulic jack 31.

Here, the mounting operation of the box culvert 24 will be described with reference to FIG. FIG. 6 is an explanatory diagram showing an operation of placing the box culvert 24 loaded on the transport cart 10 on the roadbed 25.

When the transport cart 10 carrying the box culvert 24 arrives at the place where it is to be laid, the jack 23
The box culvert 24 can be placed on the roadbed 25 by operating the and lowering the transported article loading sections 15 and 16. In this case, with the box culverts 24 loaded on the transported material loading sections 15 and 16,
Can be moved in a direction perpendicular to the rails 11 and 12, the box culvert 24 can be moved in the horizontal direction, and the mounting position in the horizontal direction can be easily adjusted.

Next, another example of the work of placing the box culvert 24a will be described with reference to FIG. FIG. 7 is an explanatory diagram showing an operation of placing the box culvert 24a loaded on the transport vehicle 10 on the roadbed 25a.

As shown in FIG. 7, the box culvert 2
If the roadbed 25a on which the 4a is to be placed is at the same height as the laying surface of the rails 11 and 12, the locking auxiliary members 33 are attached to both side surfaces of the box culvert 24a, and the lifting rod 23a of the transport carriage 10 is moved. The transported article stacking portions 15 and 16 are brought into contact with the lower surface of the locking assisting tool 33 and lifted up to be stacked. The box culvert 24a can be transported to the target position by running the transport trolley 10 in this state. After arriving at the target position, the box culvert 24a is lowered by lowering the elevating rod 23a. It can be placed on the subgrade 25a.

In this case, as in the case shown in FIGS. 5 and 6, the box culvert 24a loaded on the carrier 10 is rotated about the vertical axis at the place where the loading is to be performed.
Since the mounting position can be adjusted by moving in the lateral direction, an accurate mounting operation can be performed.

[0032]

According to the present invention, the following effects can be obtained.

(1) Traveling along two rails
Lifting and lowering operation is possible for each running unit and each running unit
And the traveling parts are connected together.
A connecting member, between the running part and the connecting member,
A movable connection that allows the traveling member to slide in the traveling direction
Part, and further, between the running part and the connecting member,
For sliding the running part through the movable connecting part.
The provision of the slide drive mechanism enables each traveling section to slide independently of the connecting member along the rail, so that the load can be rotated about the vertical axis. Therefore, it is possible to easily and safely perform an adjustment operation to make the transported object transported to the planned laying place parallel to the existing transported object.

(2) The slide drive mechanism operates the movable connecting portion
When the ride function can be stopped appropriately, it is possible to improve stability during traveling, and it is also possible to prevent the transported object from being inclined or falling off.

(3) By providing a lifting mechanism for raising and lowering the conveyed article in the conveyed article stacking section, it is possible to efficiently carry out the loading and unloading of conveyed articles such as a box culvert. The workability when placing a box culvert or the like conveyed to a destination at a predetermined position is improved. In addition, the loading / unloading workability is improved irrespective of the presence or absence of a height difference between the mounting surface of the transported object and the rail.

(4) Jack as a drive mechanism of the lifting mechanism
The loading section can be rotated around the lifting rod
In this case, when a work such as a box culvert that has been conveyed to the destination is to be placed at a predetermined point, the work of adjusting the placement position becomes easy, and the work can be placed at an accurate position.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a transport cart according to an embodiment of the present invention.

FIG. 2 is a side view of the transport cart shown in FIG.

FIG. 3 is a rear view of the transport cart shown in FIG. 1;

FIG. 4 is a partially cutaway plan view of the transport cart shown in FIG. 1;

FIG. 5 is an explanatory view showing a transfer operation by the transfer cart shown in FIG. 1;

FIG. 6 is an explanatory view showing a placing operation by the transport cart shown in FIG. 1;

FIG. 7 is an explanatory diagram showing a placing operation by the transport cart shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Conveying trolley 11,12 Rail 13,14 Traveling part 15,16 Conveyed goods loading part 17 Connecting member 19 Operation panel 21 Motor 22 Wheel 23,31 Jack 23a Lifting rod 24,24a, 34 Box culvert 25,25a Roadbed 30 Movable connecting part 32 Connecting tool 33 Locking aid

Claims (2)

(57) [Claims] 1. Can travel along two rails
A pair of running parts, and each of the pair of running parts
A conveyed material loading section arranged so as to be able to move up and down,
A transfer table provided with a connecting member for integrally connecting the rows.
A vehicle, between the pair of traveling portions and the connecting member;
Slide the pair of traveling members in the respective traveling directions.
Connected by a movable connecting part capable of
Between the row portion and the connecting member, the pair of running portions is
Slide drive for sliding through the movable connection
A transport trolley comprising a mechanism . 2. The slide drive mechanism according to claim 1 , wherein
The slide function of the unit can be stopped as appropriate
Conveying carriage according to claim 1, wherein that.