JP4339089B2 - Heavy goods transfer device with built-in propulsion mechanism - Google Patents

Description

  The present invention relates to a heavy load transfer device having a built-in propulsion mechanism that is used when a bridge girder and other heavy loads are safely and accurately moved to a predetermined location while receiving the load in an endless track. Is.

In bridge construction for rivers, straits, etc., bridge piers are erected at predetermined intervals between one land and the other, and long and heavy objects are sequentially passed over.
In such a bridge construction work, generally heavy objects are made in advance to a predetermined length, rails are laid on one land, the heavy objects are placed on the carriage, and are gradually extended from the sliding device at the tip of the land. First, it is placed on the sliding device on the first pier, and further on the second sliding device while being sent out.

Conventionally, a heavy material transfer device 60 using an endless track 61 as shown in FIG. 8 is known for such heavy material transfer.
In FIG. 8, a sliding plate 65 is slidably mounted on a pedestal 64. On the upper surface of the sliding plate 65, four vertical adjustment jacks 63 are fixed to both sides of the endless track band 61, and a spherical seat at the upper end of the piston rod 66 that advances and retreats to the vertical adjustment jack 63. Is fitted with a pivot 67 on the lower surface of the receiving base 62.

A swinging body 68 that slides on the endless track band 61 is fitted into the swinging body fitting groove of the pedestal 62.
A guide roller 72 and an auxiliary guide roller 73 are provided below the guide roller 72 so as to face both ends of the pedestal 62.
The endless track band 61 is looped around the guide rollers 72 and 73 at both ends. The endless track band 61 is a structure in which a plurality of track band units are sequentially connected to each other by a connecting shaft.

  In the conventional heavy goods transfer device 60 as described above, according to the size and weight of the heavy goods 10, one or more heavy goods transfer devices 60 are fixed with the pedestals 64 arranged sideways and / or vertically. Installed. The heavy article 10 is placed on the heavy article transfer device 60 and is pushed or pulled between the transfer jack 70 such as a double twin jack as shown in FIG. Is slowly transferred.

In FIG. 8, the heavy article 10 is moved while being placed on the endless track band 61. However, as shown in FIG. At least two heavy-weight transfer devices 60 are attached downward at both ends of the frame, the endless track 61 is brought into contact with the rail 69, and the rail 69 is continuously moved by the transfer jack 70 such as a double twin jack as a reaction force. It is also possible to do so (for example, see Patent Document 1).
JP 2000-351434 A.

Compared to the case where a single roller with a large diameter is attached to the support base so that it can rotate, or a chain roller in which a large number of small diameter rollers are connected to the support base with a chain, the endless track 61 is In the heavy load transfer device 60 used, since the endless track band 61 and the bottom surface of the heavy load 10 are in contact with a plurality of surfaces, the load is averaged, and the lower surface on which the heavy load 10 slides is uneven. In such a case, it can be overcome relatively easily.
However, in the heavy load transfer device 60 using the endless track 61, the transfer jack 70 is made as a separate device from the heavy load transfer device 60, and the heavy load transfer device 60 only functions as a roller. there were.

Conventionally, in order to fix the transfer jack 70 such as a double twin jack in a fixed manner, in order to take the reaction force of the heavy object 10, a troublesome and troublesome anchor work has to be performed. Depending on the size and transfer distance, anchor work at a plurality of locations is required. Further, when there are a plurality of transfer jacks 70, it takes several times as much work to install the jacks, and the work efficiency becomes worse.
Therefore, in order to save these troubles, it is conceivable to mount a driving device for driving the rotating shaft of the endless track 61 in the heavy load transport device 60. However, if the driving device is mounted, the limitation on the pier is limited. However, there is a problem that the entire configuration becomes unrealistically large.

  The present invention provides a propulsion drive device for driving an endless track band that can be easily and compactly mounted on a heavy load transfer device and can smoothly transfer a heavy load placed thereon. It is intended to do.

The present invention relates to a heavy load transfer device for transferring a heavy load while receiving a load of a heavy load or a reaction force of the load in the endless track band over an endless track band on a pedestal provided on a pedestal. In the belt, narrow load receiving materials slightly narrower than the chain pitch are arranged between the two chains with a gap between them , and the chain shafts are rotatably attached to these load receiving materials. A plurality of pieces with link plates attached to both ends protruding from the load receiving material of the chain shaft are sequentially connected in a ring shape with a chain on both sides of the load receiving material, and provided on the vertical frame on the lower surface of the receiving base . A drive frame and a driven sprocket that are engaged with the two rows of chains, facing one end and the other end of the support frame at positions away from both ends of the cradle, and receiving no load of heavy objects; 2 each Only, so as to face the lower portion of the cradle, provided two guide sprocket which meshes with the chain of the two rows, the two drive sprockets provided integrally with the cylindrical portion on both sides of the same axis section Two sets of propulsion drive devices are fixed to a support provided on a vertical frame portion on the lower surface of the cradle , and hydraulic motors constituting the propulsion drive device are fitted and fixed to cylindrical portions on both sides of the shaft portion. Te rotatably provided a driving sprocket and the shaft portion of the integral, their respective of the front Symbol guide sprocket provided to be vertically adjusted by the tension jack, the pedestal is vertical four provided on the pedestal A swinging body fitting groove is provided on the adjustment jack through a pivot so as to swing freely, and a swinging body fitting groove is provided in the center of the upper surface of the receiving base from the front end portion to the rear end portion corresponding to the moving direction. Loaded into the groove via a sliding plate that slides in the endless track It engaged the sliding surface of the lower surface of the receiving material is a heavy transport device incorporating a propulsion mechanism characterized by.

According to the first aspect of the present invention, the endless track band is formed by arranging elongated load receiving materials slightly narrower than the chain pitch between two chains with a gap between them , and each of the load receiving materials has a chain shaft. A chain is attached to both ends of the load receiving material with a chain attached to both ends protruding from the load receiving material of this chain shaft, and a chain is attached to both sides of the load receiving material. Therefore, the endless track zone is integrated with the chain, the configuration of the endless track zone is simplified, and the propulsion drive device that drives the endless track zone can be easily and compactly mounted on the heavy load transport device. Further, since the chain meshes with the tooth portion of the drive sprocket at a plurality of points, the tensile load in the endless track band is dispersed, and the loaded heavy object can be smoothly transferred.

A support frame provided on a vertical frame on the lower surface of the cradle, facing the one end and the other end not receiving a load of heavy objects at positions away from both ends of the cradle, Two drive sprockets and two driven sprockets that mesh with the chain of rows are provided, and two guide sprockets that mesh with the two rows of chains are provided facing the lower part of the cradle. The heavy load 10 placed on the endless track 16 can be transferred without lateral displacement by the drive sprocket 28 meshing with the chain 24.

The two drive sprockets provided integrally with the cylindrical portion on both sides of the same axis section, secured two sets of propulsion drive the support provided to the vertical frame portion of the lower surface of said pedestal, said shaft the cylindrical portion on both sides of the section, by the propulsion drive a hydraulic motor configured by fitting fixed to rotatably mounted drive sprocket and the shaft portion of the integral, their respective tension jack pre SL guide sprocket Since the guide sprocket 37 is contracted by the tensioning jack 42, the guide sprocket 37 can be easily attached and detached at the time of assembling to the cradle 15 and the guide sprocket 37 can be attached to the tensioning jack 42. The endless track belt 16 can be extended by the tension according to the weight of the heavy object 10, and the chain 24, the drive sprocket 28, the guide sprocket 3 can be applied. , It is possible to adjust the slack and hardness of the time of engagement of the driven sprocket 38 to the optimum state.
Further, the cradle is placed on four vertical adjustment jacks provided on the pedestal so as to be swingable via a pivot, and from the front end that coincides with the moving direction to the center of the upper surface of the cradle. Since the rocking body fitting groove is provided to the rear end, and the sliding surface of the lower surface of the load receiving member is engaged with the rocking body fitting groove via a sliding plate that slides on the endless track band, 4 The vertical adjustment jack 14 of the platform can move up and down in conjunction with each other, thereby adjusting the height of the endless track band 16 and adjusting the front, rear, left and right, and oblique inclination of the endless track band 16.

  In the heavy goods transfer device for transferring the heavy goods 10 while receiving the load of the heavy goods 10 or the reaction force of the loads on the endless orbit belt 16 over the cradle 15 provided on the pedestal 12. According to the invention, the endless track band 16 is configured such that a chain shaft 47 is rotatably attached to a load receiving member 48 and a link plate 51 is attached to a projecting end portion of the chain shaft 47 from the load receiving member 48. A drive sprocket 28 and a driven sprocket 38 meshing with the chain 24 are provided at one end and the other end of the cradle 15, and a hydraulic motor is provided to the drive sprocket 28. This is a heavy article transfer device incorporating a propulsion mechanism characterized in that the propulsion drive device 17 comprising 25 is interlocked.

  The chain 24 of the endless track band 16 may be in a single row, but if possible, two rows can be formed by sequentially connecting a plurality of link plates 51 attached to both ends protruding from the load receiving member 48 of the chain shaft 47. It is more preferable to provide two drive sprockets 28 and two driven sprockets 38 each having a chain 24 and meshing with the two rows of chains 24.

  Further, two drive sprockets 28, two driven sprockets 38, and two guide sprockets 37 that respectively engage with the two rows of chains 24 are provided facing one end, the other end, and the lower part of the cradle 15. By providing the guide sprocket 37 so that it can be adjusted up and down by the tension jack 42, it is possible to give the endless track 16 an optimum tension according to the impossibility.

An embodiment of a heavy load transfer device incorporating a propulsion mechanism according to the present invention will be described with reference to FIGS.
In FIG. 1 to FIG. 4, 12 is a pedestal that is directly attached to the upper end of the pier or the land. The pedestal 12 has a rotating plate 13 for changing the direction through a sliding thin plate for improving the sliding on the upper surface. Is slidably mounted, and the long hole at the substantially center of the pedestal 12 and the downward rotation shaft at the substantially center of the lower surface of the rotating plate 13 are fitted in a movable and rotatable manner.

Four vertical adjustment jacks 14 are fixed to the upper surface of the rotating plate 13 so that two of them are located on both sides of an endless track 16 described later, and pistons that advance and retreat to the cylinders 20 of these vertical adjustment jacks 14. A spherical seat is provided at the upper end of the rod 21.
The rotating plate 13 controls the hydraulic rod 25 of the propulsion drive unit 17 and the tension jack 42 of the guide sprocket 37, which will be described later, as well as controlling the advance and retreat of the piston rod 21 of the four vertical adjustment jacks 14. The supply port and the stop valve are connected via an oil feed pipe.

  A pedestal 15 is mounted via a pivot 23 by a spherical seat of the four piston rods 21. In the center of the upper surface of the cradle 15, a swinging body fitting groove is provided from the front end portion to the rear end portion corresponding to the moving direction. In this swinging body fitting groove, as shown in FIG. Two sliding plates 18 sliding on 16 are fitted in front and rear in the moving direction. On the upper surface of the sliding plate 18, a sliding groove 19 is formed in the moving direction, and a sliding body 22 is interposed. On the side of the endless track 16 is provided a guide plate 36 that guides when the heavy object 10 is transferred and prevents displacement.

  As shown in FIGS. 1 to 4, vertical frames 34 and 35 are fixed to the lower surface of the cradle 15 so as to face one end side and the other end side, respectively, and one vertical frame 34 has a propulsion drive device. 17 is provided, and the other vertical frame 35 is provided with a support frame 33 for supporting the driven sprocket shaft 39 of the driven sprocket 38.

  The endless track band 16 returns to the other end side through a driven sprocket 38 on the other end side, two sliding plates 18, a drive sprocket 28 on one end side, and a guide sprocket 37 on the lower part of the cradle 15. It is stretched around once. As shown in FIGS. 5 and 6, the endless track band 16 is rotatably fitted with two chains 24 formed at both ends of the chain shaft 47 and a gap 50 between the chains 24. Load receiving material 48. More specifically, the load receiving member 48 has a rectangular plate shape whose width is slightly narrower than the pitch of the chain 24, and the lower sliding surface 31 provides friction resistance to the sliding groove 19 of the sliding plate 18. The chain shaft 47 is engaged with the sliding body 22 for lowering, and the chain shaft 47 penetrates in the center in the longitudinal direction. The link plates 51 are fitted into the portions projecting from both ends of the chain shaft 47 and sequentially connected. A chain 24 is formed. Further, a height adjusting plate 49 is fixedly attached to the upper surface of the load receiving member 48 so that the surface on which the heavy article 10 is placed is slightly higher than the chain 24.

Next, as shown in FIGS. 1 and 2, a driven sprocket shaft 39 is horizontally attached to the support frames 33 on both sides on the other end side by a support plate 40, and the driven sprocket shaft 39 includes A driven sprocket 38 that meshes with the chains 24 on both sides is rotatably provided.
Further, as shown in FIGS. 1, 2, and 3, hydraulic motors 25 as the propulsion drive devices 17 are fixedly attached to the support frames 32 on both sides on the one end side by mounting plates 27, respectively. A part of the hydraulic motor 25 is rotatably fitted in the cylindrical portion 29, and the cylindrical portion 29 and the rotating plate 26 of the hydraulic motor 25 are fixedly coupled. The cylinder portions 29 on both sides are formed by integrally forming the drive sprockets 28 on both sides and the horizontal shaft portion 30, and the chains 24 on both sides are engaged with the drive sprockets 28 on both sides.

  As shown in FIGS. 2, 4, and 7, tension jacks 42 for adjusting the vertical position of the guide sprocket 37 are attached to both sides of the lower surface of the center of the cradle 15. The cylinder 43 and the piston 44 in the tension jack 42 are respectively provided downward on the lower surface of the cradle 15, and the lower end of the piston 44 is connected to a horizontal shaft via a vertical movement guide plate 45, a bearing cover 46, and a bearing 53. 41, guide sprockets 37 are attached to both sides of the shaft 41 by keys 52, and both chains 24 are engaged with the guide sprockets 37 on both sides.

The operation of the apparatus according to the present invention configured as described above will be described.
Depending on the size and weight of the heavy load 10, one or more heavy load transfer devices according to the present invention, in which the propulsion drive 17 is built in the land, the pier, etc., the pedestal 12 in the horizontal and / or vertical direction. The heavy objects 10 are placed in a fixed manner so as to be arranged, and the heavy objects 10 are placed on spacers placed on or fixed on the endless track 16.
Further, pressure oil is sent to the tension jack 42, the piston 44 is advanced and retracted from the cylinder 43, and the shaft 41 is moved up and down to adjust the tension between the guide sprocket 37 and the chain 24.

  In such a state, when the endless track 16 is to be transferred to the left in FIGS. 1 and 2, pressure oil is sent to the hydraulic motor 25 of the propulsion drive device 17 to rotate. Then, the rotating plate 26 of the hydraulic motor 25 rotates counterclockwise in FIG. 2, so that the cylindrical portion 29, the shaft portion 30, and the driving sprocket 28 fixed integrally with the rotating plate 26 rotate, and this drive The endless track 16 starts moving through the chain 24 meshing with the sprocket 28, and the heavy article 10 starts to be transferred.

As the hydraulic motor 25 continuously rotates, the heavy article 10 is continuously transferred.
Following the transfer of the heavy object 10, when the heavy object transfer device according to the present invention is detached from the rear end portion of the heavy object 10 to be transferred, the heavy object transfer device is transferred to the lower surface of the front end part and transferred to the target position. To do.
The four vertical adjustment jacks 14 move up and down in conjunction with each other, thereby adjusting the height of the endless track band 16 and adjusting the front and rear, left and right, and oblique inclinations of the endless track band 16.

  In the above-described embodiment, the heavy object 10 is moved while being placed on the endless track band 16, but a heavy load transfer device incorporating a propulsion mechanism using the endless track band 16 is shown in FIG. Similarly, two or more heavy goods transfer devices with built-in propulsion drive devices 17 are attached to both ends of the heavy load 10 downward, and the endless track 16 is brought into contact with the rail 69 to propel and drive the rail 69 as a reaction force. It can also be used such that it is continuously moved by making the heavy-duty transfer device incorporating the device 17 self-propelled.

In the above embodiment, the chains 24 are provided in two rows on the left and right sides, so that the propulsion drive devices 17 are installed on the drive sprockets 28 on both sides on one end side of the endless track band 16 respectively. Even in a row, the propulsion drive device 17 may be installed only in one of the drive sprockets 28.
When the chain 24 is in one row, the chain 24 may be provided at the center of the endless track band 16 and the load receiving members 48 may be disposed on both sides of the chain 24.

  In the above-described embodiment, the propulsion drive device 17 is attached to the drive sprocket 28 on one end side of the endless track band 16. However, the present invention is not limited to this. Two propulsion drive devices 17 that can be transferred in the direction opposite to the one end side can also be installed. With such a configuration, normally, when the drive sprocket 28 on one end side is driven, the driven sprocket 38 on the other end side is idled with the clutch disengaged, and has exceeded the transfer point. When returning the heavy load 10 in the reverse direction, the drive sprocket 28 on one end side is moved in accordance with the purpose of use such as disengaging the clutch and causing it to idle and driving the driven sprocket 38 on the other end side. Can be controlled.

Furthermore, the propulsion drive device 17 can be installed on each of the two guide sprockets 37 below the endless track 16 to be used as a drive sprocket. That is, the drive sprocket 28 on one end side and the driven sprocket 38 on the other end side of the endless track 16 are made to act as followers, and the guide sprocket 37 is used as the drive side. More specifically, the sprocket 37 for driving is fixedly attached to the shaft 41, the rotating plate 26 of the hydraulic motor 25 is connected to the end of the shaft 41, and the non-rotating main body portion of the hydraulic motor 25 is a tension jack. 42 is attached to the lower end of the piston 44 so that the vertical position can be adjusted.
In this case, the propulsion drive device 17 may be attached to the drive sprocket 28 and / or the driven sprocket 38.

  The heavy load transfer device incorporating the propulsion mechanism according to the present invention is effective not only as a bridge girder but also as a transfer device for large buildings, ships, oil tanks, transformers, large vehicles, and other heavy loads.

It is a partially cutaway plan view showing an embodiment of a heavy goods transfer device incorporating a propulsion mechanism according to the present invention. FIG. 2 is a side view partially cut away in FIG. 1. FIG. 2 is a partially cutaway front view in FIG. 1. FIG. 2 is a partially cutaway rear view in FIG. 1. FIG. 2 is a front view in which the endless track 16 in FIG. 1 is partially cut away. FIG. 2 is a side view in which the endless track 16 in FIG. 1 is partially cut away. FIG. 5 is an enlarged view of the tension jack 42 and the guide sprocket 37 in FIG. 4 partially cut away. It is the side view in which the conventional heavy article transfer device 60 was partially cut away. It is explanatory drawing at the time of transferring with the endless track 61 in the conventional heavy goods transfer apparatus 60 facing down.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Heavy article, 12 ... Base, 13 ... Rotating plate, 14 ... Vertical adjustment jack, 15 ... Base, 16 ... Endless track belt, 17 ... Propulsion drive device, 18 ... Sliding plate, 19 ... Sliding groove, 20 ... Cylinder, 21 ... Piston rod, 22 ... Sliding body, 23 ... Pivot, 24 ... Chain, 25 ... Hydraulic motor, 26 ... Rotary plate, 27 ... Mounting plate, 28 ... Drive sprocket, 29 ... Cylinder, 30 ... Shaft , 31 ... sliding surface, 32 ... support frame, 33 ... support frame, 34 ... vertical frame, 35 ... vertical frame, 36 ... guide plate, 37 ... guide sprocket, 38 ... driven sprocket, 39 ... shaft for driven sprocket, 40 ... support plate, 41 ... shaft, 42 ... tension jack, 43 ... cylinder, 44 ... piston, 45 ... vertical movement guide plate, 46 ... bearing cover, 47 ... chain shaft, 48 ... load receiving material, 49 ... height adjustment Board, 50 ... Gap DESCRIPTION OF SYMBOLS 51 ... Link board, 52 ... Key, 53 ... Bearing, 60 ... Heavy goods transfer apparatus, 61 ... Endless track belt, 62 ... Base, 63 ... Vertical adjustment jig, 64 ... Base, 65 ... Rotating plate, 66 ... Piston rod , 67 ... Pivot, 68 ... Oscillator, 69 ... Rail, 70 ... Jack for transfer, 71 ... Rod or rope, 72 ... Guide roller, 73 ... Guide roller.

Claims (1)

In the heavy goods transfer device for transferring a heavy object while receiving a load of a heavy object or a reaction force of the load in the endless orbit area, the endless orbit area is 2 An elongated load receiving material that is slightly narrower than the chain pitch is arranged between the chains with a gap between them , and the chain shaft is attached to each of these load receiving materials so as to be rotatable. A support frame provided on a vertical frame on the lower surface of the cradle, in which a plurality of pieces with link plates attached to both ends protruding from the cradle are sequentially connected in a ring shape with a chain on both sides of the load cradle. Two drive sprockets and two driven sprockets that mesh with the two rows of chains facing the one end and the other end that are not subjected to heavy loads at positions away from both ends of the cradle. One by one Pedestal so as to face the lower portion, provided two guide sprocket which meshes with the chain of the two rows, the two drive sprockets provided integrally with the cylindrical portion on both sides of the same axis section, the receiving base Two sets of propulsion drive devices are fixed to a support provided on a vertical frame portion on the lower surface of the shaft, and hydraulic motors constituting the propulsion drive device are fitted and fixed to the cylindrical portions on both sides of the shaft portion . rotatably provided a driving sprocket and a shaft portion, which respectively of the previous SL guide sprocket provided to be vertically adjusted by the tension jack, the cradle is on a four vertical adjusting jack provided on the pedestal And a swinging body fitting groove is provided in the center of the upper surface of the cradle from the front end portion to the rear end portion corresponding to the moving direction. Load receiving material is slid through a sliding plate that slides on the raceway belt. Heavy transport device incorporating a propulsion mechanism, characterized in that it engages the sliding surface of the surface.

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