JP4248171B2 - Heavy goods delivery cart device and heavy goods delivery method using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cart apparatus used for delivering a heavy object such as a bridge girder, and a heavy object delivery method using the same.
[0002]
[Prior art]
The delivery method of laying heavy objects such as bridge girders on the pier is to place a carriage on the rail laid on the assembly yard, place the bridge girder (heavy article) on this carriage, and move the carriage to direct the bridge girder to the peer. It is a method to send out.
As the cart used in this method, there is a general cart with wheels attached to the frame, a crawler cart with a crawler instead of the wheels, or a roller cart, etc., but this cart itself generates thrust. Since there is no device to perform this, a device that generates thrust must be used in combination.
[0003]
Separately, a self-propelled cart equipped with an electric motor that generates thrust in the cart that does not require a power device for generating thrust has been developed and exists.
[0004]
[Problems to be solved by the invention]
Therefore, when a heavy object is sent out by a cart not equipped with the former thrust generation device, as described above, a device that generates thrust separately from the cart, for example, a clamp horizontal jack is connected and pushed. Can not.
[0005]
In order to compensate for the above phenomenon, conventionally, the following means have been taken.
For example, a wire is connected to a hand-roller connected to the tip of a heavy object, and this wire is fed out and pulled from the front. As the pulling means, a combination of a wire clamp and a jack, a winch, or the like is used (see JP 2001-172918 A).
However, it is difficult to connect a wire to the leading end of the hand-roller and pull the wire from the front in the feeding direction, and it is necessary to synchronize the pulling side and the feeding side. However, when the delivery position and the pulling side are separated by several hundred meters or more, the tuning operation is difficult.
[0006]
Moreover, the above-mentioned cart only loads heavy objects, and does not have means for changing and adjusting the delivery direction of the loaded heavy objects. Therefore, when sending out a curved bridge girder, it is necessary to arrange a device to correct the sending direction separately.
In the case of a cart provided with self-propelled means by an electric motor, the cart slips due to a decrease in the load on the cart described above, the thrust cannot be applied to the heavy load, and the heavy load cannot be sent out. .
Also, when supporting a long heavy object, multiple trolleys are connected, but in order to equalize the load acting on each trolley, balance is achieved by stacking beams on the trolley and placing heavy objects on the beams. I support it. Therefore, there is a problem that the position for supporting the heavy object becomes high, and it is necessary to perform the feeding operation in a very unstable state.
[0007]
The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to load a heavy article without separately arranging a device for correcting and guiding the feeding direction of the heavy article. It is an object of the present invention to provide a cart apparatus that can reliably send out heavy objects using only the cart to be received.
Another object of the present invention is to provide a delivery method in which a heavy object can be delivered only by a cart device that supports the heavy object without pulling the heavy object from the front in the delivery direction.
[0008]
[Means for Solving the Problems]
The technical means taken by the present invention in order to achieve the above object is constituted by a rail laid in parallel and a cart that runs on the upper surface of the rail by itself.
The cart is configured by connecting two or more cart blocks, which are unit blocks, in at least the rail direction. That is, by connecting two carriage blocks, the carriage is supported upright and horizontally by four wheels, and a state in which a heavy object can be placed can be established. The number of connected trolley blocks is appropriately determined according to the length of the heavy object to be loaded.
The carriage block has a frame having a length straddling the above-mentioned parallel rails, and a drive mechanism including wheels that are suspended from the frame and run on the upper surface of the rail that can be moved and adjusted in the width direction according to the rail width. And a pair of left and right heavy lifting support plates arranged on the upper surface of the frame so as to substantially match the rail width.
The truck block may be connected at a substantially central position in the width direction of the frame, or connected at both sides in the width direction of the frame. The central connection is suitable for curve traveling, and the both-side coupling is suitable for straight traveling. Further, the connection may be in any form such as a form in which the frames are connected to each other or a form in which drive mechanisms attached to the frames are connected to each other.
[0009]
In addition, the contact surface between the rail and the wheel in the drive mechanism of the carriage is equipped with friction applying means for preventing the wheel from slipping due to the reduction of the load (load) acting on the carriage, and against the load loss in the latter half of the delivery. However, it is preferable to ensure that thrust can be generated.
As the friction applying means, a structure in which a rack is formed on the upper surface of the rail (upper surface of the upper flange), and a toothed gear (pinion) that meshes with the rack is integrally provided on the wheel that travels on the upper surface of the other rail, Or the structure etc. which adhere an upper flange with the wheel mounted on the upper flange upper surface of a rail, and the rotatable presser which press-contacts to this upper flange lower surface, etc. are mentioned. In addition, the said rack may be provided with a total of two, one on each side in the width direction of the upper surface of the rail, or one at the center in the width direction of the rail.
[0010]
Further, the drive mechanism provided in the carriage block constituting the carriage may be directly attached to the frame, but it may be supported by a hydraulic jack with respect to the frame so that the hydraulic suspension works. In this case, all the wheels of the carriage come into contact with the rail by the action of the hydraulic jack, and stable running is performed.
The pair of left and right heavy load support plates arranged on the upper surface of the frame of the carriage block is configured to be movable up and down with a hydraulic jack so that the height in the vertical direction can be adjusted. The support plate is configured to be movable in a direction perpendicular to the bridge axis. The left and right heavy load support plates may move independently of each other, but may move in the left-right direction with a constant distance therebetween. In this case, the hydraulic jack is attached to the frame, and the left and right rods are connected to the heavy load support plate so as to be movable in parallel.
[0011]
The frame constituting the carriage block may be a single frame set in advance with a predetermined size. However, it is possible to connect a plurality of members, for example, connect the central member and the left and right members, and change the connecting position to change the length of the frame. The length may be variable. The length adjustment is performed in accordance with the girder width or the rail width.
[0012]
A heavy object can be sent out by placing the heavy object on the heavy object support plate and running the rail by the carriage device. The pair of left and right heavy support plates that support the heavy load can move up and down and move in a direction perpendicular to the bridge axis, so that the heavy load to be loaded is adjusted in the horizontal and horizontal directions. Can be sent out. In addition, by installing friction applying means on the drive device of the bogie block, the tip of the heavy object that has been sent out moves to the peer, and the bogie is sure to stay on the rail even when the load on the bogie device is reduced. It is possible to secure a thrust that travels and sends heavy objects.
Therefore, it becomes possible to send out heavy objects only by this cart apparatus.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an outline of a cart apparatus according to the present invention, in which A is a parallel rail laid on an assembly yard, B is a cart mounted on the rail A, and the cart B is a plurality of carts. The block b is connected, and the heavy object W is placed on the carriage B, and the heavy article W is sent out by the traveling of the carriage B.
[0014]
The rail A is formed of a steel material 1 having a substantially H-shaped cross section, and on the upper surface of the upper flange 1a, racks 2, which are constituent members of the friction applying means D for preventing the slip of the carriage B, are provided on both sides in the width direction. Along the length of the rail.
[0015]
A carriage block b constituting the carriage B mounted on the rail A is provided with a pair of left and right drive mechanisms in accordance with the width of the rail A on the lower side of the frame 3 having a length straddling the parallel rail A. 4 is suspended and supported, and a pair of left and right heavy load support plates 5 are arranged on the upper surface of the frame 3 substantially in accordance with the rail width.
[0016]
The frame 3 is formed of a steel material having a substantially H-shaped cross section, and a pair of front and rear clevis-attached vertical jacks 6, 6 ′ are provided between the upper flange 3 a and the lower flange 3 b of the rail A in the length direction of the frame 3. A pair of left and right is arranged in accordance with the width, and the drive mechanism 4 is supported by a pair of front and rear vertical jacks arranged on the left and right sides. Thereby, the wheel of the drive mechanism 4 is always urged so as to contact the surface of the upper flange 1a of the rail A. That is, the drive mechanism 4 is suspended independently from the frame 3 by a hydraulic suspension.
[0017]
In the drive mechanism 4, a wheel 402 is rotatably supported via a bearing between left and right side portions of a machine frame 401 having a substantially U-shaped cross section, and a shaft of the wheel 402 is attached to a side outer surface of the machine frame 401. It is connected to the rotating shaft of the hydraulic motor 403 and is configured to drive and rotate. A toothed gear 404 constituting the friction applying means D is fixed to the shaft of the wheel 402 so as to rotate integrally with the rack 2 provided on the upper surface of the upper flange 1a of the rail A.
A guide wheel 405 that abuts on the lower surface of the upper flange 1a of the rail A is supported in a freely rotatable manner at the lower inner sides of the left and right side portions of the machine frame 401. The upper flange is supported by the guide wheel 405 and the wheel 402. 1a is pinched and it is comprised so that a wheel may not be removed.
[0018]
The heavy load support plate 5 is configured such that a receiving plate 502 is horizontally attached to the tip of a rod of a hydraulic jack 501 for vertical height adjustment supported through the upper flange 3a of the frame 3 via a spherical seat. ing. The hydraulic jack 501 is supported so as to be movable left and right along a guide elongated hole 7 formed in the upper flange 3 a of the frame 3, and the left and right hydraulic jacks 501, 501 are double rod type supported by the frame 3. They are connected by a hydraulic jack 8.
Accordingly, when the hydraulic jack 8 is operated, the left and right hydraulic jacks 501 and 501 provided with the receiving plate 502 are moved in the left and right directions in the guide long hole 7 with the distance between the jacks maintained. Thereby, the delivery direction of the heavy article W can be adjusted to right and left.
[0019]
A cart B is configured by connecting a plurality of cart blocks b configured as described above in accordance with the length of the heavy object W to be sent out. The number of connections is at least 2 or more.
In the form of connecting the bogie blocks b to each other, the connecting convex portions 16 are projected from the front and rear portions of the outer surface of the machine frame 401 of the drive mechanism 4 suspended on the frame 3 constituting the bogie block b, and the bridge axis direction The drive mechanisms 4 of the carriage block b arranged along the two are connected to each other by abutting the connecting projections 16 and fitting the connecting keys 9 across the connecting projections 16. Since this connection connects the left and right sides of the carriage block b, the connected carriage block b is integrated into a single line, which is suitable for straight running. On the other hand, since each of the connected truck blocks b is restricted in its degree of freedom, it is not suitable for a curved rail.
[0020]
7 to 10 are diagrams showing another embodiment of the carriage block b.
The bogie block b ′ has a frame 3 ′ formed by connecting a plurality of members. That is, the left and right members 302 and 303 are arranged in a straight line on both the left and right sides of the intermediate member 301, and the upper and lower surfaces of the upper flange 3a and the lower flange 3b of the butted portion of the intermediate member 301 and the left and right members 302 and 303 are arranged. The connecting plate 10 is overlapped, and the connecting plate 10, the intermediate member 301, and the flanges of the left and right members 302 and 303 are fastened with bolts and nuts 11 to be integrated.
Therefore, by changing the length of the intermediate member 301 or the left and right members 302 and 303, the length of the frame 3 'can be changed to be longer and shorter, and the rail width can be accommodated. In addition, when the frame 3 'is configured by connecting three members as described above, both rods for moving the pair of left and right heavy load support plates 5 mounted on the left and right members 302, 303 of the frame 3' in the left-right direction. The type hydraulic jack 8 is attached to the intermediate member 301 and the length of the contact member 12 is changed from the hydraulic jacks 501 and 501 for adjusting the vertical height of the heavy load support plate 5 supported by the left and right members 302 and 303. Therefore, it is possible to cope with a change in the length of the frame 3 ′.
[0021]
In addition, a friction applying means D ′ for preventing slippage between the wheel of the drive mechanism 4 suspended on the frame 3 ′ and the rail A is provided on the lower inner side of the left and right sides of the machine frame 401 of the drive mechanism 4. 13 is attached, and a rolling member 14 is attached to the rod tip of the pressing hydraulic jack 13. As a result, the rolling member 14 is pressed against the lower surface of the upper flange 1a of the rail A, the upper flange 1a is sandwiched between the wheels 402 of the drive mechanism 4, and friction resistance is given to the rotation of the wheels, thereby generating slip. To prevent. The form of the rolling member 14 that is pressed against the lower surface of the upper flange 1a by the pressing hydraulic jack 13 may be any chain roller (crawler) type, roller type, or the like that does not impede the rotational travel of the wheel 402. But that's fine. The friction applying means D ′ may be used in combination with the drive mechanism for the rack 2 and the toothed gear 404 described above. Furthermore, although the rack 2 of the friction applying means D described above may be provided over the entire length of the rail A, it is provided only near the end of the rail A where the load (load) on the carriage B is reduced to prevent the carriage B from slipping. You may make it do.
[0022]
Further, as shown in FIGS. 7 and 8, the cart blocks b ′ are connected to each other by connecting the projecting protrusions 15 at the front and rear ends of the substantially central portion in the width direction of the frame 3 ′ constituting the cart block b ′. The connecting pins 16 are inserted and connected across the connecting protrusions 15 of the truck block b ′ arranged at the front and rear. In this case, since the carriage block b ′ is connected at a substantially central portion in the width direction, the connected carriage blocks b ′ can be freely horizontally rotated within the space width between the carriage blocks b ′. It is suitable for traveling along the curved rail A.
[0023]
Next, a delivery method for delivering the heavy object W using the above-described cart apparatus will be described.
First, a rail A is laid in parallel on an assembly yard installed in front of the peer, and a cart B in which at least two cart blocks b or b 'are connected is placed on the rail A, and the cart block constituting the cart B The heavy article W is placed on the heavy article support plate 5 arranged on the frame b or b ′.
At this time, if the heavy object W is a long object, the heavy object bends in a bow shape, but the heavy object support plate 5 arranged on the frame of the carriage blocks b and b ′ can be moved up and down with a hydraulic jack. By setting the hydraulic pressure of each hydraulic jack to the same pressure, it is possible to receive a heavy load evenly. That is, the heavy load can be received by all heavy load support plates 5 of the carriage B.
[0024]
Then, by operating the drive mechanism 4 of the carriage block b or b ′ constituting the carriage B, the carriage B can travel and send out the heavy object W.
In the delivery, when the delivery direction is inclined in the vertical direction with respect to the horizontal plane, the heavy weight support plate 5 provided on the carriage block b or b ′ is operated by operating the hydraulic jack 501 for vertical height adjustment. The heavy object can be supported and sent out at a predetermined inclination.
In addition, when sending the feed direction at an angle to the left and right in the horizontal direction, the pair of left and right heavy load support plates 5 arranged on the carriage block b or b ′ is moved in a direction perpendicular to the bridge axis with a hydraulic jack. The feeding direction can be corrected in the left-right direction.
[0025]
Further, when the feeding operation proceeds and the tip of the heavy object is transferred onto the pier in front of the assembly yard, the load (load) acting on the carriage becomes lighter than in the initial state. At this time, since the drive mechanism 4 of the carriage block is provided with the friction applying means D or D ′, even if the load acting on the carriage B is reduced, the carriage B is connected to the friction applying means D or D ′. It moves reliably by the action and eliminates the slipping of the carriage.
Accordingly, a hydraulic jack that can reliably send out heavy objects only with the carriage device mounted on the rail on the assembly yard, and lifts and lowers the heavy object support plate 5 mounted on the carriage even when sending out a curved girder or the like, And a predetermined delivery can be performed by operating the hydraulic jack which moves the heavy load support plate 5 in the frame length direction of the carriage block.
In addition, regardless of the number of trolley blocks connected, the trolley receives the entire load evenly with the heavy load support plate installed on each block, so the height from the rail to the load is always constant regardless of the number of trolley blocks connected. It is.
[0026]
【The invention's effect】
Heavy delivery truck apparatus of the present invention, the total load of the heavy amount was evenly received by heavy support plate equipped on the carriage block, it can be fed. And since a load acts equally on each cart block constituting the cart, the height position for supporting a heavy object is always constant regardless of the number of coupled cart blocks. Therefore, it is possible to solve the conventional problem that the position for supporting a heavy object varies depending on the number of connected carts. Furthermore, the heavy object supported on the carriage can be shifted in the horizontal and horizontal directions. Therefore, it is possible to feed while correcting the feeding direction. In addition, it is possible to prevent a slip of the base car. Thereby, it is possible to travel safely even on a rail with a gradient, and it is possible to reliably maintain the thrust in the latter half of the delivery in which the load acting on the carriage is lightened. Further, it is possible to receive evenly distributes the load acting on the pedestal vehicle. Furthermore, also, it is possible to easily change the truck width to the width of the article trajectories. Furthermore, according to the heavy object delivery method according to the embodiment of the present invention , continuous feeding can be performed only with the bogie device without using auxiliary equipment such as a guide device.
[Brief description of the drawings]
FIG. 1 is a side view showing an outline of a cart apparatus according to the present invention.
FIG. 2 is an enlarged perspective view showing a cart device.
FIG. 3 is a side view with the same part cut away.
4 is a cross-sectional view taken along line (4)-(4) in FIG. 3;
5 is a cross-sectional view taken along line (5)-(5) of FIG.
FIG. 6 is a bottom view showing a connecting portion of the carriage block.
FIG. 7 is a plan view showing another embodiment of the carriage block.
FIG. 8 is a partially cutaway side view taken along line (8)-(8) of FIG.
FIG. 9 is a partially cutaway side view showing the configuration of the friction applying means.
10 is a longitudinal side view taken along line (10)-(10) of FIG.
[Explanation of symbols]
A ... Rail B ... Cart b, b '... Cart block D, D' ... Friction applying means 2 ... Rack 3, 3 '... Frame 4 ... Drive mechanism 5 ... Heavy load support plate 6, 6' ... Hydraulic jack 8 ... Hydraulic jack

Claims (8)

It consists of a rail laid in parallel and a carriage that travels on the upper surface of the rail, and the carriage has a frame that has a length that straddles the parallel rail, and an upper surface of the rail that is suspended from the frame according to the width of the rail. Connecting at least two carriage blocks having a drive mechanism having wheels traveling on the frame and a pair of left and right heavy lifting support plates arranged on the upper surface of the frame so as to substantially match the rail width in the rail direction. Become
A cart apparatus characterized in that the pair of left and right heavy load support plates are movable in a direction crossing at right angles to a bridge axis .   The cart apparatus according to claim 1, wherein a friction applying means for preventing a slip of the wheel due to a reduction in a load acting on the carriage is provided on a contact surface between the rail and the wheel in the carriage driving mechanism.   The cart apparatus according to claim 2, wherein the friction applying means is constituted by a rack formed on the upper surface of the rail and a toothed gear integrally attached to a wheel of the drive mechanism.   3. The cart apparatus according to claim 2, wherein the friction applying means has a staking structure that is struck by a wheel mounted on the upper flange upper surface of the rail and a presser that presses and contacts the lower surface of the upper flange.   The cart apparatus according to any one of claims 1 to 4, wherein the driving mechanism is supported by a hydraulic jack with respect to the frame. The cart apparatus according to any one of claims 1 to 5, wherein a pair of left and right heavy load support plates that move in a direction crossing at right angles to the bridge shaft are connected by a hydraulic jack supported by a frame . The cart apparatus according to any one of claims 1 to 6, wherein the frame is configured by connecting a plurality of members in a rail width direction . Heavy load support means for laying rails in parallel on the assembly yard installed in front of the peer, placing heavy objects on the rails, moving up and down in the vertical direction, and sliding in a direction perpendicular to the direction of feeding heavy objects A self-propelled cart block equipped with a plurality of carts connected in accordance with the length of the heavy object to be sent is mounted, and the heavy object placed on the cart is sent out on the pier by the running of this cart Heavy material delivery method.

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