JP3828100B2 - Method and apparatus for continuous transfer of heavy objects - Google Patents

Description

  The present invention is a long and heavy object in which at least one of the side edges has a non-parallel edge with respect to the transfer direction, such as a bridge girder that gradually widens from a straight part when bifurcated on a highway. Thus, the present invention relates to a method and apparatus for continuously transferring a heavy object used when the load is received in an endless track zone and is continuously moved to a predetermined location and installed.

In bridge construction of highways, rivers, straits, etc., piers are erected at predetermined intervals, and long and heavy heavy objects are sequentially transferred and passed over.
Conventionally, a heavy load transfer device 11 using an endless track 22 as shown in FIG. 11 is known for transferring such a heavy load (Patent Document 1).
A position adjustment plate 16 is slidably mounted on a pedestal 15 in the heavy article transfer device 11 via a slide plate 17. Four vertical adjustment jacks 18 are fixed to both sides of the endless track band 22 on the upper surface of the position adjustment plate 16, and the pivot 20 at the upper end of the piston rod 19 that advances and retreats to these vertical adjustment jacks 18 The base 21 is fitted to a spherical seat on the lower surface of the base 21.

The oscillator fitting groove of the pedestal 21, although not shown, oscillator that slides endless track 22 is fitted, also to face the both end portions of the pedestal 21, the guide rollers are provided The endless track belt 22 is stretched by one rotation through the guide rollers at both ends. The endless track band 22 is a structure in which a plurality of track band units are sequentially connected by a connecting shaft so as to be rotatable.

A method of transferring the heavy article 10 using the conventional heavy article transfer apparatus 11 as described above will be described.
For example, as shown in FIG. 10 (a), the heavy object 10 has at least one side edge in the transfer direction, like a bridge girder that gradually widens from a straight part, as in the case of bifurcation on an expressway. Is a long and heavy object having edges 14 that are non-parallel to each other. Specifically, the non-parallel edge portion 14 has an inclination of 10 to 25 cm per meter. The heavy article transfer device 11 is arranged and fixed at predetermined intervals along the parallel edge portion 13 and the non-parallel edge portion 14 of the heavy article 10, and the heavy article 10 is placed on the heavy article transfer device 11. At this time, the moving direction of the endless track band 22 in each heavy load transfer device 11 is the same as the transfer direction 12 in which the heavy load 10 is to be transferred.

In such a configuration, a transfer jack such as a double twin jack (not shown) is connected to the heavy object 10 via a rod or a rope, and the heavy object 10 is slowly transferred by pushing or pulling.
Here, the heavy load transfer device 11 on the parallel edge portion 13 side may be fixedly attached to a bridge pier or the like because the endless track band 22 moves in the same direction as the transfer direction 12, such as position movement or re-sampling. No problem. However, on the non-parallel edge portion 14 side, at first, as shown by the solid line in FIG. 10B, if the non-parallel edge portion 14a is placed on the endless track band 22a, the point a to the point b If the distance d1 is transferred, the subsequent non-parallel edge portion 14a gradually shifts as indicated by a dotted line 14b, and may be separated from the endless track zone 22a.

  Therefore, the transfer is interrupted at the point of transfer to the point b within the allowable range of deviation, the heavy object 10 is replaced by a spare jack (not shown), the load of the heavy object transfer device 11 is released, and the pedestal 15 and the position adjustment plate 16 is moved in a direction perpendicular to the transfer direction 12 by a predetermined distance d2, as shown by an endless track band 22b indicated by a dotted line. At this time, the heavy article 10 is at the position of the non-parallel edge portion 14b indicated by the dotted line. After the movement, the load of the heavy object 10 is changed again on the endless track 22b and transferred in the transfer direction 12. When the amount of movement in the direction perpendicular to the transfer direction 12 reaches a position exceeding the allowable range of the moving distance by the rotary sliding jack 28 of the heavy load transfer device 11, the load due to the heavy load 10 is replaced by a spare jack. The fixed position of the heavy-weight transfer device 11 itself is further moved in the direction perpendicular to the transfer direction 12 and fixed, and transferred in the same manner.

JP 2000-351434 A

  The problem to be solved is that when the heavy object 10 having the non-parallel edge portion 14 which is not parallel to the transfer direction as described above is transferred, the heavy object 10 placed on the heavy object transfer device 11 is in the endless track zone. This means that the work efficiency is extremely poor because it has to be reordered and moved many times by a spare jack before it is likely to come off from 22. In particular, if the inclination of the non-parallel edge portion 14 is large or irregularly changed, the number of times of replacement for replacement by a spare jack and the position adjustment for position adjustment by the rotary sliding jack 28 in the heavy article transfer device 11 There is a problem that not only the load is increased, but also the fixing position of the heavy-weight transfer device 11 itself has to be further moved and fixed in a direction perpendicular to the transfer direction 12.

  In the present invention, when a heavy object having an edge that is not parallel to the transfer direction is transferred by a heavy load transfer device, a heavy load that can be transferred to a predetermined position efficiently, safely, and safely. It aims at providing the continuous transfer method and its apparatus.

  The present invention relates to a heavy-weight continuous transfer device in which a heavy object 10 is placed on and transferred to an endless track band 22 of the heavy-weight transfer device 11, on the upper surface of a track band unit 29 constituting the endless track band 22. , A load receiving slider 40 that is movable in a direction different from the transfer direction of the endless track band 22 and returns to the original position when no load is applied, and a rail 52 laid in a direction different from the transfer direction of the heavy object 10. The moving carriage 50 on which the heavy article transporting device 11 is placed can be adjusted by a rail clamp device 54 and a laterally moving jack 53. The position adjustment amount of the mobile carriage 50 is controlled based on a detection signal of a displacement detection sensor 59 that is provided on the side of the endless track band 22 and measures the distance to the heavy object 10 on the endless track band 22. .

According to the first aspect of the present invention, it is provided on the upper surface of each of the plurality of track band units 29 constituting the endless track band 22 and is movable in a direction different from the transfer direction of the endless track band 22 . Of the load receiving slider 40 configured to return to the original position when no load is not placed, the step of placing the heavy load 10 on a part of the load receiving slider 40, and the endless track band 22 side The step of detecting the displacement of the heavy object 10 accompanying the transfer of the heavy object 10 by the endless track band 22 by the displacement detection sensor 59 provided in the section, and the lateral movement jack 53 is operated by this displacement detection signal to and moving the heavy transfer device 11 in a direction different from the transport direction of the heavy 10 by 22, Ri by the wraparound track belt unit 29 in the moving direction the head portion of the endless track 22, A step allowed to return the load receiving slider 40 to the original position in sequence away from the amount thereof, again heavy back sequentially starting position load bearing slider 40 of track belt unit 29 has returned to its original position by releasing the load Since the heavy load 10 is continuously transferred by repeating the step of receiving the load, the lateral movement jack 53 is operated in accordance with the movable range of the load receiving slider 40 to transfer the heavy load 10. By moving the heavy load transfer device 11 in a direction different from the direction, the heavy load 10 can be transferred continuously without reordering, and the work efficiency can be greatly improved.

  According to the invention described in claim 2, the load receiving slider 40, the rail 52, the movable carriage 50, the rail clamp device 54, the lateral movement jack 53, the displacement detection sensor 59, and the electric pump drive device 61 are used. An apparatus capable of continuously transferring heavy objects can be provided at a low cost. Further, within the allowable range of the load receiving slider 40, the heavy object 10 can be continuously transferred without matching the moving speed and position adjustment range of the heavy object transfer device 11 by the laterally moving jack 53.

  According to the third aspect of the present invention, the position adjusting plate 16 on the pedestal 15 movably provided by the rotary sliding jack 28, the load receiving slider 40, the rail 52, the movable carriage 50, and the rail clamp device. 54, the laterally moving jack 53, the displacement detection sensor 59, the electric pump driving device 61, and the other rail clamp device 70. When the stroke of the laterally moving jack 53 is reached, the rail clamp device 54 is provided. During the reordering operation, the position adjustment is performed with the position adjustment plate 16 on the pedestal 15 movably provided by the rotary sliding jack 28, thereby enabling a more complete continuous operation.

  According to the fourth aspect of the present invention, since the displacement detection sensor 59 is detachably provided on the cradle 21 on the side of the endless track band 22, even if the heavy object 10 has a special shape, it can be easily obtained. Can respond. Moreover, the shape of the heavy article 10 can cope with not only an article having a certain width but also various kinds of shapes such as an article that is widened, narrowed, or curved.

  According to the invention of claim 5, the load receiving slider 40, the two rails 52 laid in parallel, the moving carriage 50, the two rail clamp devices 54, the two laterally moving jacks 53, Since the two displacement detection sensors 59 and the electric pump driving device 61 are provided, the position of the heavy article transfer device 11 placed on the movable carriage 50 can be adjusted stably.

  In the continuous transfer method of heavy objects, the heavy object 10 having at least one side edge having a non-parallel edge with respect to the transfer direction is placed on the endless track band 22 provided on the pedestal 15 and transferred. On the load receiving slider 40 which is provided on the upper surface of the track band unit 29 constituting the endless track band 22 and can move in a direction different from the transfer direction of the endless track band 22 and returns to the original position when no load is applied. A step of placing the heavy object 10; a step of detecting displacement of the heavy object 10 accompanying the transfer of the heavy object 10 by the endless track band 22 by a displacement detection sensor 59 provided on the side of the endless track band 22; The step of moving the endless track zone 22 together with the pedestal 15 in a direction different from the transfer direction of the heavy object 10 by the endless track zone 22 by operating the lateral movement jack 53 by this displacement detection signal; 2 to release the load to the load receiving slider 40 due to the wrap around the leading portion of 2 and to start the process of returning the load receiving slider 40 to the original position, and to start the load receiving slider 40 that has released the load and returned to the original position. This is a continuous method of transferring a heavy article, wherein the heavy article 10 is continuously transferred by repeating the step of returning to the position and receiving the load again.

An embodiment of a heavy load transfer device according to the present invention will be described with reference to FIGS.
In FIGS. 1 and 2, rails 52 a and 52 b are installed on a pier or the like and in a direction substantially orthogonal to the transfer direction 12 of the heavy load 10. A movable carriage 50 is placed across the two rails 52a and 52b, and guide rollers 51 for preventing the separation are provided on both sides of the movable carriage 50. Further, rail clamp devices 54a and 54b are installed on the two rails 52a and 52b, respectively. Between the movable carriage 50 and the rail clamp devices 54a and 54b, laterally movable jacks 53a and 53b each comprising a cylinder 56 and a piston rod 55 are provided, respectively, and one end of the piston rod 55 is respectively connected to the rail clamp device 54a. The other end of the cylinder 56 is connected to the bracket 58 of the movable carriage 50 with a pin or the like. As the rail clamp devices 54a and 54b, for example, those disclosed in Japanese Patent Application Laid-Open No. 2000-53399 by the same applicant are used, and details thereof are shown in FIGS.

On the upper surface of the movable carriage 50, a heavy article transfer device 11 shown in FIGS. 3 to 5 (for example, Japanese Patent Application No. 2003-172890 by the same applicant) is placed. Two displacement detection sensors 59a and 59b are provided on the table 21 at a predetermined height by a column and the like, and at positions corresponding to the two laterally movable jacks 53a and 53b. These displacement detection sensors 59a and 59b detect the positional relationship between the web center 48 of the digit of the heavy article 10 and the endless track band 22 based on the reflected wave of the ultrasonic wave.
These displacement detection sensors 59a and 59 have detection signal output lines connected to the control box 60, and send signals from the control box 60 to the electric pump driving device 61. The electric pump driving device 61 moves the two laterally. The pressure oil of the jacks 53a and 53b is controlled, and the position of the heavy article transfer device 11 is adjusted by pulling or pushing the movable carriage 50.

  Next, the heavy load transfer device 11 will be described with reference to FIGS. 3 and 4. Reference numeral 15 denotes a pedestal mounted directly on the movable carriage 50. The pedestal 15 has a slide for improving slippage on the upper surface. A position adjusting plate 16 for adjusting or changing the position and direction through the plate 17 is slidably mounted, and the center hole of the pedestal 15 and the bottom surface of the position adjusting plate 16 are rotated downward at the center. The shaft is fitted so as to be movable and rotatable.

A total of four vertical adjustment jacks 18 are fixed to the upper surface of the position adjustment plate 16, two on each side of an endless track band 22 to be described later, and piston rods 19 that advance and retreat to the cylinders of these vertical adjustment jacks 18 are fixed. A pivot 20 is provided at the upper end.
Although not shown, the position adjusting plate 16 is connected to a pressure oil supply port for controlling the advance and retreat of the piston rod 19 of the four vertical adjusting jacks 18 and a stop valve via an oil feed pipe.

The four pivots 20 are fitted in a spherical seat on the lower surface of the cradle 21. Although not shown, a swinging member fitting groove that matches the moving direction is provided from the front end portion to the rear end portion at the center of the upper surface of the cradle 21, and the sliding plate is moved in the moving direction in the swinging member fitting groove. Two pieces are fitted in the front and rear, and slide on the endless track 22.
As shown in FIGS. 5A, 5B, and 5C, the endless track band 22 has a plurality of track band units 29 sequentially connected by a connecting pin 32 for connection. On the upper surface of the belt unit 29, a load receiving slider 40 is slidably provided in a direction orthogonal to the moving direction of the endless track belt 22.

  More specifically, the orbital band unit 29 has a rectangular plate shape, the lower sliding surface 33 engages with the sliding groove of the sliding plate, and the front and rear connecting portions include a cylindrical portion. 30 and the fitting recess 31 are alternately formed, the cylindrical portion 30 and the fitting recess 31 of the adjacent orbital belt unit 29 are fitted to each other, and the connecting pin 32 is inserted into each straight hole to rotate. It is connected freely. A box-shaped slide rail 34 is provided on the upper surface of the track band unit 26. The box-shaped slide rail 34 includes a bottom plate 35 having a rectangular shape substantially the same as the track belt unit 29, a rail frame 36 fixed to the bottom plate 35 in the longitudinal direction, and a stopper frame 37 fixed to the short direction. It is configured in a box shape. The box-shaped slide rail 34 is fixedly attached to the track band unit 29 by a connecting bolt 39.

On the box-shaped slide rail 34, a load receiving slider 40 having a width substantially the same as that of the box-shaped slide rail 34 and a length of about half is placed. The load receiving slider 40 and the fitting portion 42 are fitted into the concave portion 38 of the box-shaped slide rail 34 so that the sliding portions 41 extending on both sides slide on the rail frame 36. It has been. A slide shaft 43 is provided between the outer side surfaces of the fitting portion 42 and the inner side surfaces of the rail frame 36 for smooth movement of the load receiving slider 40 and prevention of detachment. A sliding portion 41 is provided between the lower surface of the portion 42 and the upper surface of the bottom plate 35 for sliding smoothly. A soft surface 44 such as a rubber pad is attached to the upper surface of the load receiving slider 40 so as to be in surface contact with the heavy object 10 to improve stability, and the sliding surface 33 on the lower surface has a frictional resistance. A low friction material is stuck to make it low.
Two return springs 45 are fitted between the both end faces of the load receiving slider 40 and the stopper frame 37 so as to be prevented from coming off by the locking recesses 46 and the locking recesses 47. It is always located at the center of the box-shaped slide rail 34.

  As shown in FIG. 4, support frames are fixed on both sides facing the inlet and outlet of the cradle 21 with a space slightly wider than the width of the swinging body fitting groove. A guide roller 23 for guiding the belt 22 is attached horizontally.

As shown in FIG. 3, the endless track band 22 includes an inlet side guide roller 23, two sliding plates in the swinging body fitting groove on the upper surface of the cradle 21, an outlet side guide roller 23, and a cradle. It passes over the lower part of 21 and is rotated once so that it may return to the guide roller 23 of the entrance side.
A guide device 24 is provided on one side surface of the endless track 22 in the heavy article transfer device 11. The guide device 24 is provided with a plurality of guide rolls facing the endless track band 22 side.

The operation of the apparatus according to the present invention configured as described above will be described.
For example, as shown in FIG. 10, the heavy object 10 is a long and heavy object having at least one side edge that is non-parallel to the transfer direction 12, such as a bridge girder that gradually increases from a straight part. It shall be heavy. Of the parallel edge portion 13 and the non-parallel edge portion 14 of the heavy article 10, two rails 52 a and 52 b are laid on the non-parallel edge portion 14, and rail clamp devices 54 a and 54 b and a movable carriage are placed thereon. 50. A device according to the present invention comprising a heavy material transfer device 11 and the like is arranged and fixed. Moreover, the heavy load transfer device 11 arranged and fixed along the parallel edge 13 side is provided with a conventional heavy load transfer device 11 having no position adjustment function. Of course, the heavy goods transfer apparatus 11 which has the position adjustment function by this invention may be sufficient.

  When the two rails 52a and 52b are installed, as shown in FIGS. 1 and 2, the rails 52a and 52b are installed on a pier or the like in a direction having a constant interval and substantially perpendicular to the transfer direction of the heavy object 10. When the width of the rail 52 is sufficiently wide, only one may be used. Further, the movable carriage 50 is placed so that the guide roller 51 for preventing detachment comes into contact with the outer edges of the two rails 52. Further, the laterally moving jacks 53a and 53b are installed in a sufficiently extended state when the position of the heavy article transfer device 11 is adjusted by the pulling operation. Of course, it is also possible to adjust the position of the heavy article transfer device 11 by pushing the laterally moving jacks 53a and 53b.

In order to clamp the rail clamp devices 54a and 54b, the clamp arms 64 on both sides are placed on the rail 52 with the clamp arms 64 on the outside as shown on the right side of FIG. Is moved in the backward direction, and the clamp arms 64 on both sides are stopped at the position where the clamp arms 64 are most retracted inward (the position on the left side in FIG. 6).
When the pressure oil continues to be sent, the pressure oil is sent to the clamp jack 65, the piston rod 66 protrudes, abuts against the upper plate portion 67, and pushes up the clamp arm 64. The clamp 52 is clamped by holding the rail 52 with the upward force of the lower arm 69 integrated with the clamp arm 64.

After clamping the rail clamp devices 54a and 54b, the heavy load 10 is placed on the heavy load transfer device 11 mounted on the movable carriage 50. At this time, the moving direction 12 of the endless track band 22 of each heavy load transfer device 11 is installed so as to be in the same direction as the transfer direction 12 in which the heavy load 10 is to be transferred. Therefore, the non-parallel edge 14 that is not parallel to the transfer direction 12 is placed at an angle as shown in FIGS.
8A and 8B, since the load receiving sliders 40 at both ends are the entrance and the exit of the guide roller 23, the endless track band 22 wraps around to load the heavy load 10. It is assumed that only the load receiving sliders 40 at the six central locations receive the load.

  In such a state, a rod or rope of a transfer jack such as a double twin jack (not shown) is coupled to the heavy load 10 and the heavy load 10 is pushed or pulled to move the heavy load 10 in the left direction (X Direction). It should be noted that the driving of the endless track band 22 of the heavy article transfer device 11 may be provided separately as described above, or may be a self-propelled type having a driving source therein.

  In the endless track band 22 of FIG. 8A, all the load receiving sliders 40 of the track band unit 29 are initially located at the center of the track band unit 29 by the action of the return spring 45, and in this state, the weight The object 10 is placed on the endless track belt 22 of the heavy goods transfer device 11.

In this state, the heavy object 10 starts to be transferred in the X direction (the same direction as the transfer direction 12).
Here, the displacement detection sensor 59a and the displacement detection sensor 59b measure each distance to the web center 48 of the girder in the heavy article 10 every moment, and the web center 48 of the girder on the entrance side and the center of the endless track band 22 are measured. Are adjusted in the direction perpendicular to the transfer direction by the laterally moving jack 53 so that the weights always coincide with each other.

More specifically, in FIG. 8A, it is assumed that the heavy article 10 is placed so that the web center 48 of the girder coincides with the point A of the load receiving slider 40 on the entrance side, and the displacement detection sensors 59a and 59b at that time are loaded. And Ya and Yb are the distances from the web center 48 of the beam to the beam.
Here, since the weight of the heavy load 10 is large, the load receiving slider 40 and the heavy load 10 are integrated and do not shift from each other until the heavy load 10 is separated on the exit side. Therefore, if the heavy article transfer device 11 does not move laterally, the distances Ya and Yb detected by the displacement detection sensors 59a and 59b tend to be gradually reduced.
Therefore, the displacement detection sensors 59a and 59b detect the distances Ya and Yb every moment, convert the detection signals into electric signals, and send them to the control box 60. Then, the pressure is output from the control box 60 to the electric pump driving device 61, and the electric pump driving device 61 controls the pressure oil to the cylinder 56 of the corresponding lateral movement jacks 53a and 53b based on the signals of the displacement detection sensors 59a and 59b. The laterally moving jacks 53a and 53b take the reaction force by the rail clamp devices 54a and 54b, and draw the heavy load transfer device 11 attached to the moving carriage 50 in the Y direction.

  If the locus accompanying the movement of the point A in FIG. 8A is represented by Xa, even if the locus Xa is transferred in the X direction to the position of the point A in FIG. Since it is in the same state as when it is fixed integrally with the heavy object 10, it is in a straight line regardless of the lateral movement of the heavy object transfer device 11. Therefore, the movement amount Yo = Yb−Ya in the Y direction is the load receiving slider. One of the return springs 45 in 40a contracts and the other return spring 45 extends to absorb. The same applies to the load receiving slider 40 that follows.

  In FIG. 8B, the load receiving slider 40 b preceding the load receiving slider 40 a is released from the load of the heavy load 10 by the leading wrap around the endless track 22 by the guide roller 23. Return to the center of the box-shaped slide rail 34. In this state, the load returns to the original position (the position of the point A in FIG. 8A) and receives the load again.

  In FIGS. 1 and 2, the distance Yo moving in the Y direction is between the distance Xa from the point A receiving the load in FIG. 8A to the position where the load is released in FIG. 8B. If the slider 40 is within an allowable range in which the slider 40 can move within the box-shaped slide rail 34, the endless track band 22 is directly adjusted while the heavy load transport device 11 is continuously adjusted in the Y direction by the laterally moving jacks 53a and 53b. Can be continuously transferred.

  Since the laterally moving jacks 53a and 53b usually have a stroke of 1 m as a standard, when the position adjustment amount of the heavy article transfer device 11 exceeds 1 m, the rails 52a and 52b of the rail clamp devices 54a and 54b Change the clamping position and transfer again.

In order to release the rail clamp devices 54a and 54b, pressure oil is sent to the clamp jack 65, the piston rod 66 is moved in the downward direction, and accordingly, the clamp arm 64 is lowered and the rail 52 is held. To release.
When the pressure oil continues to be fed, a hydraulic sequence valve (not shown) is opened due to the increase of the pilot pressure, and the pressure oil is sent to the opening / closing jack 62. Then, the piston rod 63 protrudes and the clamp arm 64 stops at the position where it is pushed most outward.
During the replacement work of the rail clamp devices 54a and 54b, the position is adjusted by the hydraulic pressure of the electric pump drive device 61 by the signal from the control box 60 via the rotary drive jack 28 built in the heavy load transfer device 11. By adjusting the movement of the plate 16, continuous delivery can be performed without stopping the delivery of the heavy object 10. In this case, as shown in FIG. 1, the moving carriage 50 needs to be further provided with rail clamp devices 54c and 54d on the opposite side of the lateral movement jacks 53a and 53b to clamp the moving carriage 50. However, the rail clamp devices 54c and 54d are kept open during the lateral movement of the continuous heavy goods transfer device 11 by the lateral movement jacks 53a and 53b.

  In the above-described embodiment, the moving direction of the endless track band 22 is made to coincide with the same X direction as the transfer direction 12 of the heavy load 10, and the endless track band 22 is moved in the Y direction orthogonal to the transfer direction. However, the moving direction of the endless track band 22 and the transporting direction 12 of the heavy article 10 need only be substantially coincident with the X direction, and need not necessarily coincide completely. Further, the moving direction of the position adjusting plate 16 integrated with the endless track band 22 is not necessarily matched with the Y direction, and may be substantially matched with the substantially Y direction.

In the above-described embodiment, the position adjustment movement of the heavy goods transfer device 11 is performed by pulling the lateral movement jacks 53a and 53b.
In the above-described embodiment, the independent displacement detection sensors 59a and 59b are provided so as to correspond to the laterally movable jacks 53a and 53b, respectively, but the present invention is not limited to this, and two common displacement detection sensors are used. The lateral movement jack may be controlled.
In the embodiment, by providing the two displacement detection sensors 59a and 59b, the angle of the non-parallel edge portion 14 of the heavy article 10 can be calculated, and the lateral movement jack can be controlled according to this angle. .
In the above embodiment, the attachment of the two displacement detecting sensors 59a and 59b may be attached removably to the Ri受 only base 21 by such as a magnet to accommodate the shape of the weight 10.
In the above-described embodiment, in order to cope with the case where the non-parallel edge portion 14 of the heavy article 10 is not vertical, the two displacement detection sensors 59a and 59b can be adjusted in elevation angle and depression angle.

In the embodiment described above, the load receiving slider 40 provided on the upper surface of the track band unit 29 constituting the endless track band 22 includes both end faces of the load receiving slider 40 and the stopper frame 37 as shown in FIGS. A return spring 45 is interposed therebetween. Therefore, although the load receiving slider 40 can move in either the left or right direction, the moving range is narrow accordingly.
Therefore, as shown in FIG. 9, a return spring 45 is interposed only between one end face of the load receiving slider 40 and the stopper frame 37 so that the load receiving slider 40 can move only in one direction, thereby widening the moving range. An example is shown. According to this example, the heavy article 10 having the non-parallel edge portion 14 having a larger angle can be transferred.

  The method and apparatus for continuously transferring heavy objects according to the present invention is not limited to a bridge girder as long as at least one of the side edges is a long and heavy heavy object having a non-parallel edge with respect to the transfer direction. It can also be used when chemical plant equipment and other heavy objects are continuously moved to a predetermined location.

It is a top view which shows one Example of the heavy material continuous transfer method and its apparatus by this invention. It is a front view in FIG. 2 is an enlarged side view of a heavy article transfer device 11. FIG. 2 is an enlarged plan view of a heavy article transfer device 11. FIG. FIG. 5 is a partially enlarged view of the endless track band 22 in FIG. 4, (a) is a plan view, (b) is a longitudinal side view, and (c) is a longitudinal front view. It is a front view of the rail clamp apparatus which the present applicant previously proposed. It is a top view in FIG. It is operation | movement explanatory drawing using the heavy material transfer apparatus by this invention, (a) is a top view before the start of transfer, (b) is a top view after transfer. It is a top view which shows the other Example of the load receiving slider 40 in the endless track belt. (A) is explanatory drawing of the transfer operation | movement of the heavy article 10 by the heavy load transfer apparatus 11 performed conventionally, (b) is a top view for operation | movement description. It is a front view of the conventional heavy article transfer apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Heavy article, 11 ... Heavy article transfer apparatus, 12 ... Transfer direction, 13 ... Parallel edge part, 14 ... Non-parallel edge part, 15 ... Base, 16 ... Position adjustment board, 17 ... Slide board, 18 ... Vertical adjustment jack , 19 ... piston rod, 20 ... pivot, 21 ... cradle, 22 ... endless track belt, 23 ... guide roller, 24 ... guide device, 25 ... jack for guide device, 26 ... jack for vertical movement, 27 ... frame, 28 ... Rotating / sliding jacks, 29 ... raceway band unit, 30 ... cylindrical part, 31 ... fitting recess, 32 ... connecting pin, 33 ... sliding surface, 34 ... box-shaped slide rail, 35 ... bottom plate, 36 ... rail frame, 37: Stopper frame, 38: Recessed part, 39: Coupling bolt, 40 ... Load receiving slider, 41 ... Sliding part, 42 ... Insertion part, 43 ... Slide shaft, 44 ... Soft surface, 45 ... Return spring, 46 ... Locking Recess, 47 ... Stop recess, 48 ... Web center of girder, 49 ... Flange end, 50 ... Moving carriage, 51 ... Guide roller, 52 ... Rail, 53 ... Lateral moving jack, 54 ... Rail clamp device, 55 ... Piston rod, 56 ... Cylinder 57 ... Bracket, 58 ... Bracket, 59 ... Displacement detection sensor, 60 ... Control box, 61 ... Electric pump drive device, 62 ... Open / close jack, 63 ... Clamp arm, 64 ... Clamp arm, 65 ... Clamp jack, 66 ... piston rod, 67 ... upper plate part, 68 ... support base, 69 ... lower plate part, 70 ... rail clamp device.

Claims (5)

In the continuous transfer method of heavy objects, the heavy object 10 having at least one of the side edges on the endless track band 22 of the heavy object transfer device 11 having a non-parallel edge with respect to the transfer direction is transferred. wherein provided on the upper surface of each of the plurality of track belt unit 29 constituting the endless track 22, wherein the movable in different directions transport direction of the endless track 22, the former to the no-load that has not been loaded with heavy Among the load receiving sliders 40 configured to return to the position, a step of placing the heavy load 10 on a part of the load receiving sliders 40 and a displacement detection sensor 59 provided on the side of the endless track 22. The step of detecting the displacement of the heavy object 10 accompanying the transfer of the heavy object 10 by the endless track band 22, and the lateral movement jack 53 is actuated by this displacement detection signal, and the weight by the endless track band 22. 10 and moving the heavy transfer device 11 in the transport direction different from the direction of, Ri by the wraparound track belt unit 29 in the moving direction the head portion of the endless track 22, the load receiving slider 40 sequentially away from heavy The process of returning to the original position and the process of releasing the load and returning the load receiving slider 40 of the orbital belt unit 29 that has returned to the original position to the start position in order and receiving the load of heavy objects again are repeated. A heavy load continuous transfer method, characterized in that the heavy load 10 is transferred. In the heavy goods transfer device in which the heavy goods 10 are transported on the endless track band 22 of the heavy goods transfer device 11, the heavy goods transfer device 11 is provided on the upper surface of each of the plurality of track band units 29 constituting the endless track band 22. is the a movable in different directions transport direction of the endless track 22, the load receiving slider 40 returns to the original position at the time of no load when no placed a heavy, direction different from the transport direction of the heavy 10 A rail 52 laid on the rail, a movable carriage 50 on which the heavy article transfer device 11 is moved along the rail 52, a rail clamp device 54 detachably provided on the rail 52, and the movable carriage 50. And the laterally moving jack 53 interposed between the rail clamp device 54 and the side of the endless track zone 22 and the distance to the heavy object 10 on the endless track zone 22 is set. A displacement detecting sensor 59 to be fixed, and an electric pump driving device 61 for controlling the position adjustment of the heavy load transfer device 11 by the laterally moving jack 53 based on a detection signal of the displacement detecting sensor 59. Heavy goods transfer device. In the heavy load transfer device in which the heavy load 10 is loaded on the endless track 22 of the heavy load transfer device 11, the rotary sliding jack 28 is placed on the base 15 constituting the heavy load transfer device 11. The endless track band 22 is attached to the position adjusting plate 16 provided so as to be movable and the cradle 21 provided on the position adjusting plate 16, and the upper surface of each of the plurality of track band units 29 constituting the endless track band 22 is attached. provided, said the movable in different directions transport direction of the endless track 22, the load receiving slider 40 returns to the original position at the time of no load when no placed a heavy, different from the transport direction of the heavy 10 A rail 52 laid in the direction, a moving carriage 50 on which the heavy article transfer device 11 is moved along the rail 52, and a rail clutch detachably provided on the rail 52 , A laterally moving jack 53 interposed between the moving carriage 50 and the rail clamp device 54, and a side of the endless track zone 22 up to the heavy object 10 on the endless track zone 22. A displacement detection sensor 59 that measures the distance, an electric pump drive device 61 that controls the position adjustment of the heavy load transport device 11 by the lateral movement jack 53 based on the detection signal of the displacement detection sensor 59, and the top of the rail 52 A heavy article transfer device comprising: another rail clamp device 70 that is detachably attached to the heavy load transfer device 11 when the rail clamp device 54 is opened.   4. The heavy article transfer device according to claim 2, wherein the displacement detection sensor is provided detachably on the cradle on the side of the endless track band. In the heavy goods transfer device in which the heavy goods 10 are transported on the endless track band 22 of the heavy goods transfer device 11, the heavy goods transfer device 11 is provided on the upper surface of each of the plurality of track band units 29 constituting the endless track band 22. And a load receiving slider 40 that is movable in a direction substantially perpendicular to the transfer direction of the endless track band 22 and that is returned to its original position by a return spring 45 when no load is loaded, and the heavy object 10 Two rails 52 laid parallel to each other in a direction different from the transfer direction of the vehicle, a moving carriage 50 on which the heavy material transfer device 11 is moved along the two rails 52, and the two rails 52, two rail clamp devices 54 detachably provided on each of the two, and two lateral movement jacks respectively interposed between the movable carriage 50 and the two rail clamp devices 54. 53, two displacement detection sensors 59 provided on the side of the endless track band 22 and measuring the distance to the heavy object 10 on the endless track band 22, and the two displacement detection sensors 59 An apparatus for transporting heavy objects, comprising: an electric pump driving device 61 that controls the position adjustment of the heavy object transporting device 11 by independently driving each laterally moving jack 53 based on a detection signal.

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