Heavy object transport device, heavy object transport method, control device and program

Abstract

To provide a transportation apparatus for heavy weight articles capable of effectively transporting heavy weight articles without the need for stopping a mobile truck once when re-holding a clamp.SOLUTION: A transportation apparatus 1 for heavy weight articles transports heavy weight articles mounted on a mobile truck 10 set on a rail R in a travelable manner by moving the mobile truck 10 with a front jack 20 and a rear jack 30. One end of the front jack 20 is connected to a front part 11 of the mobile truck 10 in the travelling direction so as to apply pressure to the front part 11, one end of the rear jack 30 is connected to a rear part 12 of the mobile truck 10 in the travelling direction so as to apply pressure to the rear part 12, a front clamp 40 is attached to the other end of the front jack 20 and a rear clamp 50 is attached to the other end of the rear jack 30. The front jack 20 and the rear jack 30 have hydraulic jacks 21 and 31 disposed on the one end side thereof and pneumatic jacks 22 and 32 disposed on the other end side thereof, respectively.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a heavy object transport device, a heavy object transport method, a control device, and a program. [Background technology]

[0002] Various techniques have been proposed for sliding a large structure (heavy object) such as a bridge girder in a predetermined direction. For example, a technique has been proposed for moving a heavy object placed on a slide base using a track clamp, a horizontal jack attached to the track clamp, and a slide base attached to the horizontal jack and sliding on a temporary track (see Patent Document 1). In this technique, the track clamp is fixed to the temporary track, and the horizontal jack is extended while taking a reaction force at the fixed position of the track clamp to push and move the slide base, and then the track clamp is released from the temporary track to contract the horizontal jack, and the track clamp is fixed to the temporary track at the contracted position, and the horizontal jack is extended again. By repeating this procedure, the slide base can be moved.

[0003] Currently, a technology has been proposed for moving a heavy load mounted on a movable dolly using a movable dolly, a horizontal jack connected to one end of the movable dolly, a reaction clamp connected to the other end of the horizontal jack, and a hold clamp connected to the other end of the movable dolly (see Patent Document 2). In this technology, the movable dolly can be moved by extending the horizontal jack in a state where the reaction clamp is fixed to the rail and the reaction force of the horizontal jack is removed, and it is said that the movable dolly can be prevented from running away by fixing the hold clamp to the rail when the extended horizontal jack is retracted (when stopped). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 5-59705 [Patent Document 2] JP 2007-112572 A Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, a technology has been proposed for transporting a heavy load mounted on a mobile cart using two horizontal jacks (front jack and rear jack) attached to the front and rear of the mobile cart, respectively, and two clamps (front clamp and rear clamp) attached to these two horizontal jacks, respectively. When this technology is adopted, the heavy load can be transported by alternately using the two horizontal jacks, but when changing the clamps (i.e., when moving from a state in which one clamp is fixed to the rail to a state in which the other clamp is fixed to the rail), it is necessary to release the pressing force on the mobile cart and stop the mobile cart once. For this reason, there are problems in that the average moving speed of the mobile cart is relatively low, making it impossible to transport heavy loads efficiently, and in addition, it is necessary to perform complicated deceleration and acceleration operations associated with stopping and restarting the mobile cart.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a heavy object transport device that can transport heavy objects efficiently by increasing the average moving speed of the movable cart without the need to stop the movable cart when changing clamps. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the first heavy object transport device of the present invention is configured to transport heavy objects placed on a movable cart, which is installed so as to be able to run on rails, by moving the movable cart with a horizontal jack, and the horizontal jack has a front jack one end connected to the front part of the movable cart so as to apply a pressing force or a pulling force to the front part of the movable cart in the direction of travel, and a rear jack one end connected to the rear part of the movable cart so as to apply a pressing force or a pulling force to the rear part of the movable cart in the direction of travel, a front clamp is attached to the other end of the front jack for fixing and releasing the movable cart to the rail, and a rear clamp is attached to the other end of the rear jack for fixing and releasing the movable cart to the rail, and the front and rear jacks have a hydraulic jack arranged at one end and a pneumatic jack arranged at the other end.

[0008] By adopting this configuration, by using front and rear jacks with "pneumatic jacks" in addition to hydraulic jacks, it is possible to continue applying pressure to the mobile cart even when changing the clamps. Therefore, since it is no longer necessary to stop the mobile cart once when changing the clamps, it is possible to increase the average moving speed of the mobile cart (i.e., shorten the moving time), and it becomes possible to transport heavy objects efficiently.

[0009] A first heavy object transport method according to the present invention is a method for transporting a heavy object using the first heavy object transport apparatus. The method of applying a "pushing force" to both the front and rear parts of the movable carriage using the first heavy-duty transport apparatus is as follows: a first step of extending a hydraulic jack of the front jack in a state where the front clamp is fixed to the rail and the rear clamp is released from the rail, thereby applying a pressing force to a front portion of the movable carriage and moving the movable carriage in a traveling direction; a second step of extending the hydraulic jacks of the front and rear jacks after the first step, with both the front and rear clamps fixed to the rails, to apply a pressing force to the front and rear portions of the movable carriage, thereby moving the movable carriage in the traveling direction; a third step in which, after the second step, the extension of the hydraulic jack of the front jack is stopped while the hydraulic jack of the rear jack is further extended in a state where both the front and rear clamps are fixed to the rails, thereby applying a pressing force to a rear portion of the movable carriage while extending the pneumatic jack of the front jack, thereby moving the movable carriage in the traveling direction; a fourth step of extending the hydraulic jack of the rear jack after the third step, with the front clamp released from the rail and the rear clamp fixed to the rail, thereby applying a pressing force to a rear portion of the movable carriage and moving the movable carriage in the traveling direction; a fifth step, which is performed after the fourth step, in a state where the front clamp is released from the rail and the rear clamp is fixed to the rail, by contracting the hydraulic jack of the front jack and extending the hydraulic jack of the rear jack, thereby applying a pressing force to a rear portion of the movable carriage and moving the movable carriage in the traveling direction; a sixth step of extending the hydraulic jacks of the front and rear jacks after the fifth step, with both the front and rear clamps fixed to the rails, to apply a pressing force to the front and rear portions of the movable carriage, thereby moving the movable carriage in the travel direction; a seventh step, after the sixth step, in which the hydraulic jack of the rear jack is stopped from extending while the hydraulic jack of the front jack is further extended in a state where both the front and rear clamps are fixed to the rails, thereby extending the pneumatic jack of the rear jack and applying a pressing force to a front portion of the movable carriage to move the movable carriage in the traveling direction; an eighth step of extending the hydraulic jack of the front jack after the seventh step, with the front clamp fixed to the rail and the rear clamp released from the rail, to apply a pressing force to a front portion of the movable carriage and move the movable carriage in the traveling direction; It includes.

[0010] On the other hand, the method of applying a "pulling force" to both the front and rear parts of the movable carriage using the first heavy load transport apparatus is as follows: a first step of applying a tensile force to a rear portion of the movable carriage to move the movable carriage in a traveling direction by contracting a hydraulic jack of the rear jack in a state where the rear clamp is fixed to the rail and the front clamp is released from the rail; a second step of applying a tensile force to the front and rear portions of the movable carriage and moving the movable carriage in the traveling direction by contracting the hydraulic jacks of the front and rear jacks while both the front and rear clamps are fixed to the rails after the first step; a third step in which, after the second step, the extension of the hydraulic jack of the rear jack is stopped while the hydraulic jack of the front jack is further contracted in a state where both the front and rear clamps are fixed to the rails, thereby contracting the pneumatic jack of the rear jack and applying a tensile force to a front portion of the movable carriage to move the movable carriage in the traveling direction; a fourth step of, after the third step, releasing the rear clamp from the rail and fixing the front clamp to the rail, and then contracting the hydraulic jack of the front jack in a state where the hydraulic jack of the front jack is contracted to apply a tensile force to a front portion of the movable carriage, thereby moving the movable carriage in the traveling direction; a fifth step in which, after the fourth step, the hydraulic jack of the rear jack is extended and the hydraulic jack of the front jack is contracted in a state in which the rear clamp is released from the rail and the front clamp is fixed to the rail, thereby applying a tensile force to a front portion of the movable carriage and moving the movable carriage in the traveling direction; a sixth step of, after the fifth step, contracting the hydraulic jacks of the front and rear jacks while both the front and rear clamps are fixed to the rails, thereby applying a tensile force to the front and rear portions of the movable carriage, thereby moving the movable carriage in the traveling direction; a seventh step in which, after the sixth step, the hydraulic jack of the front jack is stopped from being contracted while the hydraulic jack of the rear jack is further contracted in a state where both the front and rear clamps are fixed to the rails, thereby contracting the pneumatic jack of the front jack and applying a tensile force to the rear portion of the movable carriage to move the movable carriage in the traveling direction; an eighth step of, after the seventh step, retracting the hydraulic jack of the rear jack in a state where the rear clamp is fixed to the rail and the front clamp is released from the rail, thereby applying a tensile force to a rear portion of the movable carriage and moving the movable carriage in the traveling direction; It includes.

[0011] By adopting this method, a pushing force or a pulling force can be continuously applied to the moving cart throughout all steps from the first to the eighth steps, so that the average moving speed of the moving cart can be increased (i.e., the moving time can be shortened), and heavy objects can be transported efficiently. Conventionally, when changing the clamp, it was necessary to release the pushing force or the pulling force on the moving cart and stop the moving cart once. In contrast, in this method, since the front and rear jacks having "pneumatic jacks" in addition to the hydraulic jacks are adopted, even if the extension (contraction) of one hydraulic jack is stopped with both clamps fixed to the rail, one pneumatic jack can be slightly extended (contracted), so that the other hydraulic jack can be extended (contracted) by that amount to apply a pushing force (pulling force) to the moving cart (third and seventh steps). After that, while removing the clamp on one jack side from the rail, the other hydraulic jack can be extended (contracted) to apply a pushing force (pulling force) to the moving cart (fourth and eighth steps). Therefore, there is no need to stop the movable carriage once when changing the clamp, and there is also the advantage that the troublesome deceleration and acceleration operations that accompany stopping (and restarting) the movable carriage are also unnecessary.

[0012] The second heavy object transport device of the present invention is configured to transport heavy objects placed on a movable cart, which is installed so that it can run on rails, by moving the movable cart with a horizontal jack, and the horizontal jack has a front jack one end connected to the front part of the movable cart so as to apply a tensile force to the front part in the direction of travel of the movable cart, and a rear jack one end connected to the rear part so as to apply a pressing force to the rear part in the direction of travel of the movable cart, a front clamp is attached to the other end of the front jack for fixing and releasing the movable cart to the rail, and a rear clamp is attached to the other end of the rear jack for fixing and releasing the movable cart to the rail, and the front and rear jacks have a hydraulic jack arranged at one end and a pneumatic jack arranged at the other end.

[0013] By adopting this configuration, by using front and rear jacks with "pneumatic jacks" in addition to hydraulic jacks, it is possible to continue applying a pushing or pulling force to the mobile cart even when changing the clamps. Therefore, since it is no longer necessary to stop the mobile cart once when changing the clamps, it is possible to increase the average moving speed of the mobile cart (i.e., shorten the moving time), and it becomes possible to transport heavy objects efficiently.

[0014] A second heavy object transport method according to the present invention is a method for transporting a heavy object using the second heavy object transport apparatus, comprising the steps of: a first step of applying a tensile force to a front portion of the movable carriage to move the movable carriage in a traveling direction by contracting a hydraulic jack of the front jack in a state where the front clamp is fixed to the rail and the rear clamp is released from the rail; a second step in which, after the first step, the hydraulic jack of the front jack is contracted while the hydraulic jack of the rear jack is extended in a state where both the front and rear clamps are fixed to the rails, thereby applying a pulling force to the front portion of the movable carriage and a pushing force to the rear portion, thereby moving the movable carriage in the traveling direction; a third step in which, after the second step, the hydraulic jack of the front jack is stopped from contracting while the hydraulic jack of the rear jack is further extended in a state where both the front and rear clamps are fixed to the rails, thereby contracting the pneumatic jack of the front jack and applying a pressing force to the rear portion of the movable carriage to move the movable carriage in the traveling direction; a fourth step of extending the hydraulic jack of the rear jack after the third step, with the front clamp released from the rail and the rear clamp fixed to the rail, thereby applying a pressing force to a rear portion of the movable carriage and moving the movable carriage in the traveling direction; a fifth step of extending the hydraulic jack of the front jack and the hydraulic jack of the rear jack in a state in which the front clamp has been released from the rail and the rear clamp has been fixed to the rail after the fourth step, thereby applying a pressing force to a rear portion of the movable carriage and moving the movable carriage in the traveling direction; a sixth step in which, after the fifth step, the hydraulic jack of the front jack is contracted while the hydraulic jack of the rear jack is extended in a state where both the front and rear clamps are fixed to the rails, thereby applying a pulling force to the front portion of the movable carriage and a pushing force to the rear portion, thereby moving the movable carriage in the traveling direction; a seventh step, after the sixth step, in which the extension of the hydraulic jack of the rear jack is stopped while the hydraulic jack of the front jack is further contracted in a state where both the front and rear clamps are fixed to the rails, thereby extending the pneumatic jack of the rear jack and applying a tensile force to the front portion of the movable carriage to move the movable carriage in the traveling direction; an eighth step of, after the seventh step, retracting the hydraulic jack of the front jack in a state where the front clamp is fixed to the rail and the rear clamp is released from the rail, thereby applying a tensile force to a front portion of the movable carriage and moving the movable carriage in the traveling direction; It includes.

[0015] By adopting this method, the pushing force and pulling force can be continuously applied to the moving cart throughout all steps from the first step to the eighth step, so that the average moving speed of the moving cart can be increased (i.e., the moving time can be shortened), and heavy objects can be transported efficiently. Conventionally, when changing the clamp, it was necessary to release the pushing force and pulling force on the moving cart and stop the moving cart once. In contrast, in this method, since the front and rear jacks having "pneumatic jacks" in addition to the hydraulic jacks are adopted, the front pneumatic jack can be slightly contracted even after the contraction of the front hydraulic jack is stopped with both clamps fixed to the rail, so that the rear hydraulic jack can be extended by that amount to apply a pushing force to the moving cart (third step). Also, the rear pneumatic jack can be slightly extended even after the extension of the rear hydraulic jack is stopped with both clamps fixed to the rail, so that the front hydraulic jack can be slightly contracted by that amount to apply a pushing force to the moving cart (seventh step). After that, the clamp on one jack is removed from the rail, while the hydraulic jack on the other jack is extended and retracted to apply a pressing force to the mobile cart (steps 4 and 8). This has the advantage that it is no longer necessary to stop the mobile cart once when changing the clamp, and also that the troublesome deceleration and acceleration operations that accompany stopping (and restarting) the mobile cart are no longer necessary.

[0016] A third heavy-duty transport device according to the present invention is configured to transport a heavy weight placed on a movable dolly, which is installed so as to be able to run on a rail, by moving the movable dolly with a horizontal jack, the horizontal jack having one end connected to a first portion of the movable dolly so as to apply a pressing force to the first portion and a second jack having one end connected to a second portion of the movable dolly so as to apply a pressing force to the second portion, a first clamp for fixing and releasing the movable dolly to the rail is attached to the other end of the first jack, and a second clamp for fixing and releasing the movable dolly to the rail is attached to the other end of the second jack, the first and second jacks having a hydraulic jack arranged on one end side and a pneumatic jack arranged on the other end side. In this case, the first portion may be a "lower portion of the rear portion of the movable dolly" and the second portion may be an "upper portion of the rear portion of the movable dolly". Also, a "front jack" may be used as the first jack, and a "rear jack" (arranged further rearward in the traveling direction than the front jack) may be used as the second jack. Also, a "front clamp" may be used as the first clamp, and a "rear clamp" (arranged further rearward in the traveling direction than the front clamp) may be used as the second clamp.

[0017] By adopting this configuration, the first and second jacks, which have "pneumatic jacks" in addition to hydraulic jacks, can continue to apply pressure to the mobile cart even when changing the clamps. Therefore, since it is no longer necessary to stop the mobile cart once when changing the clamps, the average moving speed of the mobile cart can be increased (i.e., the moving time can be shortened), making it possible to transport heavy objects efficiently.

[0018] A third heavy object transport method according to the present invention is a method for transporting a heavy object using the third heavy object transport apparatus, comprising the steps of: a first step of applying a pressing force to a first portion (a lower portion of the rear portion) of the movable carriage by extending a hydraulic jack of the first jack (the front jack) in a state in which the first clamp (the front clamp) is fixed to the rail and the second clamp (the rear clamp) is released from the rail, thereby moving the movable carriage in the traveling direction; a second step of extending the hydraulic jacks of the first and second jacks (front and rear jacks) after the first step, with both the first and second clamps (front and rear clamps) fixed to the rails, to apply a pressing force to the first and second portions (the lower and upper portions of the rear portion) of the movable carriage, thereby moving the movable carriage in the traveling direction; a third step in which, after the second step, the extension of the hydraulic jack of the first jack (front jack) is stopped while the hydraulic jack of the second jack (rear jack) is further extended in a state where both the first and second clamps (front and rear clamps) are fixed to the rails, thereby applying a pressing force to the second portion (upper part of the rear portion) of the movable cart while extending the pneumatic jack of the first jack (front jack), thereby moving the movable cart in the traveling direction; a fourth step in which, after the third step, the hydraulic jack of the second jack (rear jack) is extended in a state in which the first clamp (front clamp) is released from the rail and the second clamp (rear clamp) is fixed to the rail, thereby applying a pressing force to the second portion (upper part of the rear portion) of the movable cart to move the movable cart in the traveling direction; a fifth step in which, after the fourth step, the hydraulic jack of the first jack (front jack) is contracted and the hydraulic jack of the second jack (rear jack) is extended in a state in which the first clamp (front clamp) is released from the rail and the second clamp (rear clamp) is fixed to the rail, thereby applying a pressing force to the second portion (upper part of the rear portion) of the movable cart and moving the movable cart in the traveling direction; a sixth step of extending the hydraulic jacks of the first and second jacks (front and rear jacks) after the fifth step, while both the first and second clamps (front and rear clamps) are fixed to the rails, thereby applying a pressing force to the first and second portions (the lower and upper portions of the rear portion) of the movable carriage, thereby moving the movable carriage in the traveling direction; a seventh step in which, after the sixth step, the extension of the hydraulic jack of the second jack (rear jack) is stopped while the hydraulic jack of the first jack (front jack) is further extended in a state where both the first and second clamps (front and rear clamps) are fixed to the rails, thereby applying a pressing force to the first portion (the lower part of the rear portion) of the movable cart while extending the pneumatic jack of the second jack (rear jack), thereby moving the movable cart in the traveling direction; an eighth step of, after the seventh step, extending the hydraulic jack of the first jack (front jack) in a state where the first clamp (front clamp) is fixed to the rail and the second clamp (rear clamp) is released from the rail, thereby applying a pressing force to a first portion (a lower portion of the rear portion) of the movable carriage, thereby moving the movable carriage in the traveling direction; It includes.

[0019] By adopting this method, a pressing force can be applied to the moving cart continuously throughout all steps from the first to the eighth steps, which increases the average moving speed of the moving cart (i.e., shortens the moving time), and makes it possible to transport heavy objects efficiently. Conventionally, when changing the clamp, it was necessary to release the pressing force on the moving cart and stop the moving cart once. In contrast, this method employs the first and second jacks (front and rear jacks) that have an "air jack" in addition to the hydraulic jack, so that even if the extension of one hydraulic jack is stopped with both clamps fixed to the rail, one air jack can be slightly extended, so the other hydraulic jack can be extended by that amount to apply a pressing force to the moving cart (third and seventh steps). After that, while removing the clamp on one jack side from the rail, the other hydraulic jack can be extended to apply a pressing force to the moving cart (fourth and eighth steps). Therefore, there is no need to stop the movable carriage once when changing the clamp, and there is also the advantage that the troublesome deceleration and acceleration operations that accompany stopping (and restarting) the movable carriage are also unnecessary.

[0020] The first control device according to the present invention is configured to execute the first to eighth steps in the first heavy object transport method by controlling the jacks and clamps in the first heavy object transport device.

[0021] The second control device according to the present invention is configured to execute the first to eighth steps in the second heavy object transport method by controlling the jacks and clamps in the second heavy object transport device.

[0022] The third control device according to the present invention is configured to execute the first to eighth steps in the third heavy object transport method by controlling the jacks and clamps in the third heavy object transport apparatus.

[0023] The program according to the present invention causes a computer to execute the first to eighth steps in the first, second or third method for transporting a heavy object. Effect of the Invention

[0024] According to the present invention, it is possible to provide a heavy object transport device that can transport heavy objects efficiently by increasing the average moving speed of the movable cart without the need to stop the movable cart once when changing the clamp. [Brief description of the drawings]

[0025] [Figure 1] 1 is a side view of a heavy object transport apparatus according to a first embodiment of the present invention. [Diagram 2] 3 is a plan view of a front jack and a rear jack respectively connected to a front portion and a rear portion of a movable carriage of the heavy object transport apparatus according to the first embodiment of the present invention. FIG. [Diagram 3] 1 is a perspective view of a heavy object transport device according to a first embodiment of the present invention, as viewed from the rear. FIG. [Figure 4] 1 is a perspective view of a heavy object transport device according to a first embodiment of the present invention, as viewed from the front. [Diagram 5] 1 is a partially transparent perspective view of a heavy object transport device according to a first embodiment of the present invention, as viewed from the front. FIG. [Figure 6] 1 is a plan view of a heavy object transport apparatus according to a first embodiment of the present invention. FIG. [Figure 7] FIG. 2 is a bottom view of the heavy object transport apparatus according to the first embodiment of the present invention. [Figure 8a] FIG. 2 is a step diagram illustrating a method for transporting a heavy object using the heavy object transport apparatus according to the first embodiment of the present invention (when pushing a movable cart). [Figure 8b] FIG. 2 is a step diagram illustrating a method for transporting a heavy object using the heavy object transport apparatus according to the first embodiment of the present invention (when pulling a movable dolly). [Figure 9] FIG. 6 is a side view of a heavy object transport apparatus according to a second embodiment of the present invention. [Figure 10] FIG. 6 is a plan view of a heavy object transport apparatus according to a second embodiment of the present invention. [Figure 11]FIG. 11 is a perspective view of a heavy object transport device according to a second embodiment of the present invention, as viewed from the rear. [Figure 12] FIG. 11 is a perspective view of a heavy object transport device according to a second embodiment of the present invention, as viewed from the front. [Figure 13] FIG. 11 is a partially transparent perspective view of a heavy object transport device according to a second embodiment of the present invention, as viewed from the front. [Figure 14] FIG. 6 is a bottom view of a heavy object transport device according to a second embodiment of the present invention. [Figure 15] FIG. 11 is a step diagram illustrating a method for transporting a heavy object using the heavy object transport apparatus according to the second embodiment of the present invention. [Figure 16] FIG. 11 is a side view of a heavy object transport apparatus according to a third embodiment of the present invention. [Figure 17] FIG. 11 is an explanatory diagram for explaining the configuration of a jack of a heavy object transport apparatus according to a third embodiment of the present invention. [Figure 18] FIG. 11 is a perspective view of a heavy object transport device according to a third embodiment of the present invention, as viewed from the front. [Figure 19] FIG. 11 is a partially cutaway perspective view of a heavy object transport device according to a third embodiment of the present invention, as viewed from the front and slightly above. [Figure 20] FIG. 11 is a partially cutaway perspective view of a heavy object transport device according to a third embodiment of the present invention, as viewed from the front and slightly below. [Figure 21] FIG. 11 is a plan view of a heavy object transport apparatus according to a third embodiment of the present invention. [Figure 22] FIG. 11 is a bottom view of a heavy object transport device according to a third embodiment of the present invention. [Diagram 23] FIG. 11 is a perspective view showing a state in which a frame and a rear jack of a heavy object transport device according to a third embodiment of the present invention are folded up. [Figure 24] FIG. 11 is a plan view showing a state in which a frame and a rear jack of a heavy object transport device according to a third embodiment of the present invention are folded up. [Diagram 25] FIG. 11 is a step diagram illustrating a method for transporting a heavy object using the heavy object transport apparatus according to the third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments are merely preferred application examples, and the scope of application of the present invention is not limited to these.

[0027] First Embodiment First, the configuration of a heavy object transport apparatus 1 according to a first embodiment of the present invention will be described with reference to Figs. 1 to 7.

[0028] The heavy object transport device 1 of this embodiment is configured to transport a heavy object (a large structure such as a bridge girder, not shown) placed on a movable cart 10, which is installed so that it can run on a rail R, by moving the movable cart 10 with a horizontal jack.

[0029] As shown in Figs. 1, 3 to 7, the movable dolly 10 has a first part 11 arranged in front of the moving direction (for example, in the direction of arrow D in Fig. 1 when the movable dolly 10 is transported by the method of pushing the movable dolly 10 as shown in Fig. 8a), a second part 12 arranged in the rear of the moving direction, and a connecting beam 13 connecting the first part 11 and the second part 12. The first part 11 is a relatively large, approximately rectangular parallelepiped housing, and two relatively large-diameter wheels W1 that can run on the rail R are attached thereto via the axle A1. The second part 12 is a relatively small, approximately rectangular parallelepiped housing, and two relatively small-diameter wheels W2 that can run on the rail R are attached thereto via the axle A2. One end of the connecting beam 13 is attached to the upper rear end of the first part 11, and the other end of the connecting beam 13 is attached to the upper part of the second part 12. The movable carriage 10 has such a configuration, so that the first portion 11 and the second portion 12 can run on the rail R as a unit.

[0030] 2 etc., the horizontal jack is composed of a first jack 20 having one end 20a connected to the first part 11 of the movable carriage 10 so as to apply a pressing force or a pulling force to the first part 11, and a second jack 30 having one end 30a connected to the second part 12 of the movable carriage 10 so as to apply a pressing force or a pulling force to the second part 12. A first clamp 40 that realizes fixing and releasing the fixing to and from the rail R is attached to the other end 20b of the first jack 20, and a second clamp 50 that realizes fixing and releasing the fixing to and from the rail R is attached to the other end 30b of the second jack 30.

[0031] As shown in Fig. 2 etc., the first jack 20 has a hydraulic jack 21 arranged on one end 20a side, a pneumatic jack 22 arranged on the other end 20b side, and a connecting nut 23 connecting the hydraulic jack 21 and the pneumatic jack 22. The hydraulic jack 21 has a hydraulic cylinder 21a and a rod 21b (see Fig. 8a(A) etc.), and applies a pushing force or a pulling force in the traveling direction to the movable cart 10 by extending or contracting the rod 21b by hydraulic pressure. The pneumatic jack 22 has a pneumatic cylinder 22a and a rod 22b (see Fig. 8a(C) etc.), and applies a pushing force or a pulling force in the traveling direction to the movable cart 10 by extending or contracting the rod 22b by pneumatic pressure (pressure of air or gas (nitrogen gas etc.)). The pneumatic jack 22 is configured so that the rod 22b of the hydraulic cylinder 21a can be extended or retracted even after the rod 21b is extended or retracted to its maximum extent. Therefore, the first jack 20 can continue to apply a pushing or pulling force to the movable carriage 10 even when the clamp is replaced, as will be described in detail later. The stroke of the hydraulic jack 21 can be set to about 800 mm (output 500 kN), and the stroke of the pneumatic jack 22 can be set to about 150 mm.

[0032] The configuration of the second jack 30 (the hydraulic jack 31, the pneumatic jack 32, and the connecting nut 33) is substantially the same as the configuration of the first jack 20, so a detailed description thereof will be omitted.

[0033] The first clamp 40 and the second clamp 50 can fix the rail R to the rail by clamping and tightening the widthwise end face of the upper flange of the rail R from both sides, and can release the fixation to the rail R by loosening the tightening.

[0034] The hydraulic jacks 21, 31 and pneumatic jacks 22, 32 of the first jack 20 and the second jack 30, and the first clamp 40 and the second clamp 50 may be operated by an operator on-site, or may be operated remotely by an operator from outside who wirelessly sends control signals. Also, sensors may be provided to detect the state of each jack 20, 30 and each clamp 40, 50, and a control device may automatically send control signals based on the state detected by the sensors to control the operation of each jack 20, 30 and each clamp 40, 50, thereby executing each step of the heavy load transport method described below. The control device may be constituted by a computer having a memory that stores various control programs and various data, and a central processing unit that executes various control programs.

[0035] Next, a method for "pushing" and transporting the movable cart 10 and a heavy object placed thereon using the heavy object transport apparatus 1 according to this embodiment (heavy object transport method) will be described with reference to FIG. 8a.

[0036] When the method of Fig. 8a is carried out, the first part 11 of the movable dolly 10 corresponds to the "front part", the second part 12 corresponds to the "rear part", and the first jack 20 of the heavy object transport device 1 functions as the "front jack", the second jack 30 functions as the "rear jack", the first clamp 40 functions as the "front clamp", and the second clamp 50 functions as the "rear clamp". For this reason, in the explanation of Fig. 8a, in order to make it easier to understand the front and rear of the movement direction, the first part 11 will be referred to as the "front part 11", the second part 12 as the "rear part 12", the first jack 20 as the "front jack 20", the second jack 30 as the "rear jack 30", the first clamp 40 as the "front clamp 40", and the second clamp 50 as the "rear clamp 50".

[0037] 8a(A), with the front clamp 40 of the heavy load transport device 1 fixed to the rail R and the rear clamp 50 released from the rail R, the hydraulic jack 21 of the front jack 20 is extended to apply a pressing force to the front part 11 of the movable cart 10, thereby moving the movable cart 10 in the traveling direction (first step). In the first step, a reaction force is applied from the front clamp 40, and by extending the rod 21b of the front hydraulic jack 21 by, for example, 500 mm, the movable cart 10 can be moved 500 mm in the traveling direction.

[0038] Next, as shown in FIG. 8a(B), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jacks 21 and 31 of the front and rear jacks 20 and 30 are extended to apply a pressing force to the front portion 11 and the rear portion 12 of the movable carriage 10, thereby moving the movable carriage 10 in the traveling direction (second step). In the second step, the front and rear hydraulic jacks 21 and 31 are extended, for example, by 75 mm each, so that the movable carriage 10 can be moved 75 mm in the traveling direction. In the second step, the operation of fixing the rear clamp 50 to the rail R is performed simultaneously with the operation of extending the front hydraulic jack 21 by receiving a reaction force from the front clamp 40 fixed to the rail R from the first step. The operation of fixing the rear clamp 50 to the rail R takes about 2 to 3 seconds from the start of fixing to the completion of fixing, but the rear hydraulic jack 31 is extended by receiving a reaction force from the rear clamp 50 at the same time as starting fixing the rear clamp 50 to the rail R.

[0039] 8a(C), with both the front and rear clamps 40, 50 fixed to the rail R, the extension of the hydraulic jack 21 of the front jack 20 is stopped while the hydraulic jack 31 of the rear jack 30 is further extended, thereby extending the pneumatic jack 22 of the front jack 20 and applying a pressing force to the rear part 12 of the movable cart 10, thereby moving the movable cart 10 in the forward direction (third step). In the third step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31 is extended by, for example, 50 mm (at this time, the front pneumatic jack 22 is extended by 50 mm), thereby moving the movable cart 10 by 50 mm in the forward direction.

[0040] Next, as shown in FIG. 8a(D), in a state where the front clamp 40 is released from the rail R and the rear clamp 50 is fixed to the rail R, the hydraulic jack 31 of the rear jack 30 is extended to apply a pressing force to the rear part 12 of the movable carriage 10, thereby moving the movable carriage 10 in the forward direction (fourth step). In the fourth step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31 is extended, for example, by 50 mm, so that the movable carriage 10 can be moved 50 mm in the forward direction. In the fourth step, the reaction force is applied from the rear clamp 50, which has been fixed to the rail R since the third step, and the rear hydraulic jack 31 can be extended at the same time. Since the front pneumatic jack 22 is extended until the front clamp 40 is released from the rail R, the movement of the movable carriage 10 in the forward direction due to the extension of the rear hydraulic jack 31 is not hindered.

[0041] 8a(E), with the front clamp 40 released from the rail R and the rear clamp 50 fixed to the rail R, the hydraulic jack 21 of the front jack 20 is contracted and the hydraulic jack 31 of the rear jack 30 is extended, applying a pressing force to the rear part 12 of the movable cart 10 and moving the movable cart 10 in the traveling direction (fifth step). In the fifth step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31 is extended by, for example, 500 mm, so that the movable cart 10 can be moved 500 mm in the traveling direction. During this time, both the front hydraulic jack 21 and the pneumatic jack 22 are fully contracted.

[0042] Next, as shown in Fig. 8a(F), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jacks 21 and 31 of the front and rear jacks 20 and 30 are extended to apply a pressing force to the front portion 11 and the rear portion 12 of the movable carriage 10, thereby moving the movable carriage 10 in the direction of travel (sixth step). In the sixth step, the front and rear hydraulic jacks 21 and 31 are extended, for example, by 75 mm each, so that the movable carriage 10 can be moved 75 mm in the direction of travel. In the sixth step, the front clamp 40 is fixed to the rail R, and at the same time, the rear hydraulic jack 31 is extended by receiving a reaction force from the rear clamp 50 fixed to the rail R from the fifth step. The operation of fixing the front clamp 40 to the rail R takes about 2 to 3 seconds from the start of fixing to completion, but at the same time as starting to fix the front clamp 40 to the rail R, a reaction force is also applied from the front clamp 40 to extend the front hydraulic jack 21.

[0043] 8a(G), with both the front and rear clamps 40, 50 fixed to the rail R, the extension of the hydraulic jack 31 of the rear jack 30 is stopped and the hydraulic jack 21 of the front jack 20 is further extended, thereby extending the pneumatic jack 32 of the rear jack 30 and applying a pressing force to the front part 11 of the movable cart 10 to move the movable cart 10 in the forward direction (seventh step). In the seventh step, a reaction force is applied from the front clamp 40, and the front hydraulic jack 21 is extended by, for example, 50 mm (at this time, the rear pneumatic jack 32 is extended by 50 mm), thereby moving the movable cart 10 in the forward direction by 50 mm.

[0044] Next, as shown in FIG. 8a(H), in a state where the front clamp 40 is fixed to the rail R and the rear clamp 50 is released from the rail R, the hydraulic jack 21 of the front jack 20 is extended to apply a pressing force to the front part 11 of the movable carriage 10, thereby moving the movable carriage 10 in the traveling direction (eighth step). In the eighth step, a reaction force is applied from the front clamp 40, and the front hydraulic jack 21 is extended, for example, by 50 mm, so that the movable carriage 10 can be moved 50 mm in the traveling direction. In the eighth step, the reaction force is applied from the front clamp 40 fixed to the rail R from the seventh step, and the front hydraulic jack 21 can be extended at the same time. Until the rear clamp 50 is released from the rail R, the rear pneumatic jack 32 is extended, so that the movement of the movable carriage 10 in the traveling direction due to the extension of the front hydraulic jack 21 is not hindered.

[0045] After the eighth step shown in Fig. 8a(H), the process returns to the first step. That is, as shown in Fig. 8a(A), the hydraulic jack 21 of the front jack 20 is extended in a state where the front clamp 40 is fixed to the rail R and the rear clamp 50 is released from the rail R, thereby applying a pressing force to the front part 11 of the movable carriage 10 and moving the movable carriage 10 in the forward direction (first step). In the first step, a reaction force is applied from the front clamp 40, and the rod 21b of the front hydraulic jack 21 is extended by, for example, 500 mm, so that the movable carriage 10 can be moved 500 mm in the forward direction. During this time, both the rear hydraulic jack 31 and the pneumatic jack 32 are fully retracted.

[0046] Next, a method for "pulling" and transporting the movable dolly 10 and a heavy object placed thereon using the heavy object transport apparatus 1 according to this embodiment (heavy object transport method) will be described with reference to FIG. 8b.

[0047] When the method of Fig. 8b is carried out, the first part 11 of the movable dolly 10 corresponds to the "rear part", the second part 12 corresponds to the "front part", and the first jack 20 of the heavy object transport device 1 functions as the "rear jack", the second jack 30 functions as the "front jack", the first clamp 40 functions as the "rear clamp", and the second clamp 50 functions as the "front clamp". For this reason, in the explanation of Fig. 8b, in order to make it easier to understand the front and rear of the movement direction, the first part 11 will be referred to as the "rear part 11", the second part 12 as the "front part 12", the first jack 20 as the "rear jack 20", the second jack 30 as the "front jack 30", the first clamp 40 as the "rear clamp 40", and the second clamp 50 as the "front clamp 50".

[0048] First, as shown in Fig. 8b(A), with the rear clamp 40 of the heavy load transport apparatus 1 fixed to the rail R and the front clamp 50 released from the rail R, the hydraulic jack 21 of the rear jack 20 is contracted to apply a tensile force to the rear portion 11 of the movable cart 10, thereby moving the movable cart 10 in the traveling direction (first step). In the first step, a reaction force is applied from the rear clamp 40, and by contracting the rod 21b of the rear hydraulic jack 21 by, for example, 500 mm, the movable cart 10 can be moved 500 mm in the traveling direction (opposite to the direction in Fig. 8a).

[0049] Next, as shown in FIG. 8b(B), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jacks 21 and 31 of the front and rear jacks 20 and 30 are contracted to apply a tensile force to the rear portion 11 and the front portion 12 of the movable carriage 10, thereby moving the movable carriage 10 in the traveling direction (second step). In the second step, the front and rear hydraulic jacks 21 and 31 are contracted, for example, by 75 mm each, so that the movable carriage 10 can be moved 75 mm in the traveling direction. In the second step, the front clamp 50 is fixed to the rail R, and at the same time, a reaction force is applied from the rear clamp 40 fixed to the rail R from the first step to contract the rear hydraulic jack 21. The operation of fixing the front clamp 50 to the rail R takes about 2 to 3 seconds from the start of fixing to the completion of fixing, but at the same time that the fixing of the front clamp 50 to the rail R is started, a reaction force is also applied from the front clamp 50 to contract the front hydraulic jack 31.

[0050] 8b(C), with both the front and rear clamps 40, 50 fixed to the rail R, the hydraulic jack 21 of the rear jack 20 is stopped from contracting while the hydraulic jack 31 of the front jack 30 is further contracted, thereby contracting the pneumatic jack 22 of the rear jack 20 and applying a tensile force to the front part 12 of the movable cart 10, thereby moving the movable cart 10 in the forward direction (third step). In the third step, a reaction force is applied from the front clamp 50, and the front hydraulic jack 31 is contracted by, for example, 50 mm (at this time, the rear pneumatic jack 22 is contracted by 50 mm), thereby moving the movable cart 10 in the forward direction by 50 mm.

[0051] Next, as shown in FIG. 8b(D), in a state where the rear clamp 40 is released from the rail R and the front clamp 50 is fixed to the rail R, the hydraulic jack 31 of the front jack 30 is extended to apply a tensile force to the front part 12 of the movable carriage 10, thereby moving the movable carriage 10 in the traveling direction (fourth step). In the fourth step, a reaction force is applied from the front clamp 50, and the front hydraulic jack 31 is contracted, for example, by 50 mm, so that the movable carriage 10 can be moved 50 mm in the traveling direction. In the fourth step, the reaction force is applied from the front clamp 50, which has been fixed to the rail R since the third step, and the front hydraulic jack 31 can be contracted at the same time. Since the rear pneumatic jack 22 is contracted until the rear clamp 40 is released, the movement of the movable carriage 10 in the traveling direction due to the contraction of the front hydraulic jack 31 is not impeded.

[0052] 8b(E), with the rear clamp 40 released from the rail R and the front clamp 50 fixed to the rail R, the hydraulic jack 21 of the rear jack 20 is extended and the hydraulic jack 31 of the front jack 30 is contracted, applying a tensile force to the front part 12 of the movable carriage 10 and moving the movable carriage 10 in the traveling direction (fifth step). In the fifth step, a reaction force is applied from the front clamp 50, and by extending the front hydraulic jack 31 by, for example, 500 mm, the movable carriage 10 can be moved 500 mm in the traveling direction. During this time, both the rear hydraulic jack 21 and the pneumatic jack 22 are fully extended.

[0053] Next, as shown in FIG. 8b(F), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jacks 21 and 31 of the front and rear jacks 20 and 30 are contracted to apply a tensile force to the front portion 11 and the rear portion 12 of the movable carriage 10, thereby moving the movable carriage 10 in the direction of travel (sixth step). In the sixth step, the front and rear hydraulic jacks 21 and 31 are contracted, for example, by 75 mm each, so that the movable carriage 10 can be moved 75 mm in the direction of travel. In the sixth step, the operation of fixing the rear clamp 40 to the rail R is performed simultaneously with the operation of contracting the front hydraulic jack 31 by receiving a reaction force from the front clamp 50 fixed to the rail R from the fifth step. The operation of fixing the rear clamp 40 to the rail R takes about 2 to 3 seconds from the start of fixing to the completion of fixing, but the rear hydraulic jack 21 is contracted by receiving a reaction force from the rear clamp 40 at the same time as starting fixing the rear clamp 40 to the rail R.

[0054] 8b(G), with both the front and rear clamps 40, 50 fixed to the rail R, the hydraulic jack 31 of the front jack 30 is stopped from contracting while the hydraulic jack 21 of the rear jack 20 is further contracted, thereby contracting the pneumatic jack 32 of the front jack 30 and applying a tensile force to the rear part 11 of the movable cart 10 to move the movable cart 10 in the forward direction (seventh step). In the seventh step, a reaction force is applied from the rear clamp 40, and the rear hydraulic jack 21 is contracted by, for example, 50 mm (at this time, the front pneumatic jack 32 is contracted by 50 mm), thereby moving the movable cart 10 in the forward direction by 50 mm.

[0055] Next, as shown in FIG. 8b(H), in a state where the rear clamp 40 is fixed to the rail R and the front clamp 50 is released from the rail R, the hydraulic jack 21 of the rear jack 20 is contracted to apply a tensile force to the rear part 11 of the movable carriage 10, thereby moving the movable carriage 10 in the forward direction (eighth step). In the eighth step, a reaction force is applied from the rear clamp 40, and the rear hydraulic jack 21 is contracted, for example, by 50 mm, so that the movable carriage 10 can be moved 50 mm in the forward direction. In the eighth step, the reaction force is applied from the rear clamp 40 fixed to the rail R from the seventh step, and the rear hydraulic jack 21 can be contracted at the same time. Until the front clamp 50 is released from the rail R, the front pneumatic jack 32 is contracted, so that the movement of the movable carriage 10 in the forward direction due to the contraction of the rear hydraulic jack 21 is not impeded.

[0056] After the eighth step shown in Fig. 8b(H), the process returns to the first step. That is, as shown in Fig. 8b(A), the hydraulic jack 21 of the rear jack 20 is contracted in a state where the rear clamp 40 is fixed to the rail R and the front clamp 50 is released from the rail R, thereby applying a tensile force to the rear part 11 of the movable carriage 10 and moving the movable carriage 10 in the forward direction (first step). In the first step, a reaction force is applied from the rear clamp 40, and the rod 21b of the rear hydraulic jack 21 is contracted by, for example, 500 mm, so that the movable carriage 10 can be moved 500 mm in the forward direction. During this time, both the front hydraulic jack 31 and the front pneumatic jack 32 are fully extended.

[0057] In the method for transporting a heavy load according to the embodiment described above, a pushing force or a pulling force can be continuously applied to the movable carriage 10 throughout all steps from the first step to the eighth step, so that the average moving speed of the movable carriage 10 can be increased (i.e., the moving time can be shortened), and the heavy load can be transported efficiently. Conventionally, when changing the clamp, it was necessary to release the pushing force on the movable carriage 10 and stop the movable carriage 10 once. In contrast, in the present method, the first and second jacks 20 and 30 having the "pneumatic jacks 22 and 32" in addition to the hydraulic jacks 21 and 31 are employed, so that even if the extension (contraction) of one hydraulic jack is stopped with both clamps 40 and 50 fixed to the rail R, one pneumatic jack can be slightly extended (contracted), and the other hydraulic jack can be extended (contracted) by that amount to apply a pushing force (pulling force) to the movable carriage 10 (third and seventh steps). Thereafter, the clamp on one jack side is removed from the rail R, while the other hydraulic jack is extended (retracted) to apply a pressing force (pulling force) to the movable cart 10 (fourth and eighth steps). This has the advantage that it is no longer necessary to stop the movable cart 10 once when changing the clamp, and also that the troublesome deceleration and acceleration operations that accompany stopping (and restarting) the movable cart 10 are no longer necessary.

[0058] Furthermore, in the heavy load transport device 1 according to the embodiment described above, by using the first and second jacks 20 and 30 having the "pneumatic jacks 22 and 32" in addition to the hydraulic jacks 21 and 31, a pushing force or pulling force can be continuously applied to the movable carriage 10 even when changing the clamps. Therefore, since it is not necessary to stop the movable carriage 10 once when changing the clamps, the average moving speed of the movable carriage 10 can be increased (i.e., the moving time can be shortened), and heavy loads can be transported efficiently.

[0059] Second Embodiment Next, a second embodiment of the present invention will be described. The heavy object transport apparatus 1A according to this embodiment is a heavy object transport apparatus 1 according to the first embodiment, in which the configuration of the movable carriage 10 and the arrangement of the jacks are changed, and other configurations are substantially the same as those of the first embodiment. Therefore, the different configurations will be mainly described, and the common configurations will be denoted by the same reference numerals as those of the first embodiment, and detailed descriptions thereof will be omitted.

[0060] First, the configuration of a heavy object transport apparatus 1A according to this embodiment will be described with reference to Figs.

[0061] As in the first embodiment, the heavy object transport device 1A of this embodiment is configured to transport a heavy object (a large structure such as a bridge girder, not shown) placed on a movable cart 10A, which is installed so that it can run on a rail R, by moving the movable cart 10A with a horizontal jack.

[0062] As shown in Fig. 9 to Fig. 14, the movable dolly 10A in this embodiment is a single housing having a substantially rectangular parallelepiped shape, and has two wheels W therein capable of running on rails R attached via axles A. With this configuration, the movable dolly 10A is capable of running on the rails R and moving in a predetermined traveling direction (the direction of arrow D in Fig. 9).

[0063] 9 to 14, the horizontal jack in this embodiment is composed of a front jack 20 having one end 20a connected to the front portion 11A of the movable carriage 10A so as to apply a pulling force to the front portion 11A, and a rear jack 30 having one end 30a connected to the rear portion 12A of the movable carriage 10 so as to apply a pressing force to the rear portion 12. A front clamp 40 that realizes fixing and releasing the fixing to and from the rail R is attached to the other end 20b of the front jack 20, and a rear clamp 50 that realizes fixing and releasing the fixing to and from the rail R is attached to the other end 30b of the rear jack 30.

[0064] That is, in the first embodiment, the movable cart 10 is moved by "pushing" the first portion 11 and the second portion 12 of the movable cart 10 with both the first jack 20 and the second jack 30 or by "pulling" them with both, whereas in this embodiment, the movable cart 10A is moved by "pulling" the front portion 11A of the movable cart 10A with the front jack 20 and "pushing" the rear portion 11B of the movable cart 10A with the rear jack 20. The configurations of the front jack 20, the rear jack 30, the front clamp 40, and the rear clamp 50 are substantially the same as those of the first jack 20, the second jack 30, the first clamp 40, and the second clamp 50 in the first embodiment, respectively, and therefore detailed description thereof will be omitted.

[0065] Next, a method for transporting the movable dolly 10A and a heavy object placed thereon using the heavy object transporting apparatus 1A according to this embodiment (a heavy object transporting method) will be described with reference to FIG.

[0066] 15(A), with the front clamp 40 of the heavy object transport apparatus 1A fixed to the rail R and the rear clamp 50 released from the rail R, the hydraulic jack 21 of the front jack 20 is contracted to apply a tensile force to the front part 11A of the movable cart 10A, thereby moving the movable cart 10A in the traveling direction (first step). In the first step, a reaction force is applied from the front clamp 40, and by contracting the rod 21b of the front hydraulic jack 21 by, for example, 500 mm, the movable cart 10A can be moved 500 mm in the traveling direction.

[0067] Next, as shown in Fig. 15(B), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jack 21 of the front jack 20 is contracted while the hydraulic jack 31 of the rear jack 30 is extended, thereby applying a pulling force to the front part 11A of the movable carriage 10A and a pushing force to the rear part 12A, thereby moving the movable carriage 10A in the traveling direction (second step). In the second step, the front hydraulic jack 21 is contracted, for example, by 75 mm, while the rear hydraulic jack 31 is extended, for example, by 75 mm, so that the movable carriage 10A can be moved 75 mm in the traveling direction. In the second step, the rear clamp 50 is fixed to the rail R, and at the same time, the front hydraulic jack 21 is contracted by receiving a reaction force from the front clamp 40 fixed to the rail R from the first step. The operation of fixing the rear clamp 50 to the rail R takes about 2 to 3 seconds from the start of fixing to completion, but at the same time as starting to fix the rear clamp 50 to the rail R, a reaction force is also applied from the rear clamp 50 to extend the rear hydraulic jack 31.

[0068] 15(C), with both the front and rear clamps 40, 50 fixed to the rail R, the hydraulic jack 21 of the front jack 20 is stopped from contracting while the hydraulic jack 31 of the rear jack 30 is further extended, thereby contracting the pneumatic jack 22 of the front jack 20 and applying a pressing force to the rear part 12A of the movable cart 10A to move the movable cart 10A in the forward direction (third step). In the third step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31 is extended by, for example, 50 mm (at this time, the front pneumatic jack 22 is contracted by 50 mm), thereby moving the movable cart 10A in the forward direction by 50 mm.

[0069] Next, as shown in FIG. 15(D), in a state where the front clamp 40 is released from the rail R and the rear clamp 50 is fixed to the rail R, the hydraulic jack 31 of the rear jack 30 is extended to apply a pressing force to the rear part 12A of the mobile carriage 10A to move the mobile carriage 10A in the forward direction (fourth step). In the fourth step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31 is extended, for example, by 50 mm, to move the mobile carriage 10A in the forward direction by 50 mm. In the fourth step, the reaction force is applied from the rear clamp 50, which has been fixed to the rail R since the third step, to extend the rear hydraulic jack 31 at the same time as the operation of releasing the front clamp 40 from the rail R. Since the front pneumatic jack 22 is contracted until the fixation of the front clamp 40 is released, the movement of the mobile carriage 10A in the forward direction due to the extension of the rear hydraulic jack 31 is not hindered.

[0070] 15(E), with the front clamp 40 released from the rail R and the rear clamp 50 fixed to the rail R, the hydraulic jack 21 of the front jack 20 is extended and the hydraulic jack 31 of the rear jack 30 is extended to apply a pressing force to the rear portion 12A of the mobile cart 10A and move the mobile cart 10A in the forward direction (fifth step). In the fifth step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31 is extended by, for example, 500 mm, so that the mobile cart 10A can be moved 500 mm in the forward direction. During this time, both the front hydraulic jack 21 and the pneumatic jack 22 are fully extended.

[0071] Next, as shown in Fig. 15(F), in a state where both the front and rear clamps 40 and 50 are fixed to the rail R, the hydraulic jack 21 of the front jack 20 is contracted while the hydraulic jack 31 of the rear jack 30 is extended, thereby applying a pulling force to the front part 11A of the movable carriage 10A and a pushing force to the rear part 12A, thereby moving the movable carriage 10A in the traveling direction (sixth step). In the sixth step, the front hydraulic jack 21 is contracted, for example, by 75 mm, while the rear hydraulic jack 31 is extended, for example, by 75 mm, so that the movable carriage 10A can be moved 75 mm in the traveling direction. In the sixth step, the front clamp 40 is fixed to the rail R, and at the same time, the rear hydraulic jack 31 is extended by receiving a reaction force from the rear clamp 50 fixed to the rail R from the fifth step. The operation of fixing the front clamp 40 to the rail R takes about 2 to 3 seconds from the start of fixing to completion, but at the same time as starting to fix the front clamp 40 to the rail R, a reaction force is also applied from the front clamp 40 to contract the front hydraulic jack 21.

[0072] 15(G), with both the front and rear clamps 40, 50 fixed to the rail R, the extension of the hydraulic jack 31 of the rear jack 30 is stopped and the hydraulic jack 21 of the front jack 20 is further contracted, thereby extending the pneumatic jack 32 of the rear jack 30 and applying a tensile force to the front part 11A of the movable cart 10A to move the movable cart 10A in the forward direction (seventh step). In the seventh step, a reaction force is applied from the front clamp 40, and the front hydraulic jack 21 is contracted by, for example, 50 mm (at this time, the rear pneumatic jack 32 is extended by 50 mm), thereby moving the movable cart 10A in the forward direction by 50 mm.

[0073] Next, as shown in FIG. 15(H), in a state where the front clamp 40 is fixed to the rail R and the rear clamp 50 is released from the rail R, the hydraulic jack 21 of the front jack 20 is contracted to apply a tensile force to the front part 11A of the movable carriage 10A, thereby moving the movable carriage 10A in the forward direction (eighth step). In the eighth step, a reaction force is applied from the front clamp 40, and the front hydraulic jack 21 is contracted, for example, by 50 mm, so that the movable carriage 10A can be moved 50 mm in the forward direction. In the eighth step, the reaction force is applied from the front clamp 40 fixed to the rail R from the seventh step, and the front hydraulic jack 21 can be contracted at the same time. Until the rear clamp 50 is released from the rail R, the rear pneumatic jack 32 is extended, so that the movement of the movable carriage 10A in the forward direction due to the contraction of the front hydraulic jack 21 is not hindered.

[0074] After the eighth step shown in Fig. 15(H), the process returns to the first step. That is, as shown in Fig. 15(A), the hydraulic jack 21 of the front jack 20 is contracted in a state where the front clamp 40 is fixed to the rail R and the rear clamp 50 is released from the rail R, thereby applying a tensile force to the front part 11A of the movable carriage 10A to move the movable carriage 10A in the forward direction (first step). In the first step, a reaction force is applied from the front clamp 40, and the rod 21b of the front hydraulic jack 21 is contracted, for example, by 500 mm, so that the movable carriage 10A can be moved 500 mm in the forward direction. During this time, both the rear hydraulic jack 31 and the pneumatic jack 32 are fully contracted.

[0075] In the method for transporting heavy objects according to the embodiment described above, since the pushing force or pulling force can be continuously applied to the movable dolly 10A throughout all steps from the first step to the eighth step, the average moving speed of the movable dolly 10A can be increased (i.e., the moving time can be shortened), and the heavy objects can be transported efficiently. Conventionally, when changing the clamp, it was necessary to stop the movable dolly 10A by releasing the pushing force or pulling force on the movable dolly 10A. In contrast, in the present method, since the front and rear jacks 20 and 30 having the "pneumatic jacks 22 and 32" in addition to the hydraulic jacks 21 and 31 are adopted, the front pneumatic jack 22 can be slightly contracted even after the contraction of the front hydraulic jack 21 is stopped with both clamps 40 and 50 fixed to the rail R, the rear hydraulic jack 31 can be extended by that amount to apply a pushing force to the movable dolly 10A (third step). Furthermore, since the rear pneumatic jack 22 can be extended slightly even after the extension of the rear hydraulic jack 31 is stopped with both clamps 40 and 50 fixed to the rail R, the front hydraulic jack 21 can be contracted by that amount to apply a pressing force to the mobile cart 10A (seventh step). After that, while removing the clamp on one jack side from the rail, the other hydraulic jack can be extended and contracted to apply a pressing force to the mobile cart 10A (fourth and eighth steps). This has the advantage that it is no longer necessary to stop the mobile cart 10A once when changing the clamps, and also that the complicated deceleration and acceleration operations accompanying stopping (and restarting) the mobile cart 10A are no longer necessary.

[0076] Furthermore, in the heavy load transport device 1A according to the embodiment described above, by using the front and rear jacks 20 and 30 having the "pneumatic jacks 22 and 32" in addition to the hydraulic jacks 21 and 31, it is possible to continue applying a pressing force to the movable carrier 10A even when changing the clamps. Therefore, since it is not necessary to stop the movable carrier 10A once when changing the clamps, it is possible to increase the average moving speed of the movable carrier 10A (i.e., shorten the moving time), and it becomes possible to transport heavy loads efficiently.

[0077] <Third embodiment> Next, a third embodiment of the present invention will be described. The heavy object transport apparatus 1B according to this embodiment is a heavy object transport apparatus 1 according to the first embodiment, with the configuration of the movable carriage 10 and the arrangement of the jacks changed, and other configurations are substantially the same as those of the first embodiment. Therefore, the different configurations will be mainly described, and the common configurations will be denoted by the same reference numerals as those of the first embodiment, and detailed descriptions thereof will be omitted.

[0078] First, the configuration of a heavy object transport apparatus 1B according to this embodiment will be described with reference to Figs.

[0079] As in the first embodiment, the heavy object transport device 1B of this embodiment is configured to transport a heavy object (a large structure such as a bridge girder) (not shown) placed on a movable cart 10B, which is installed so that it can run on a rail R, by moving the movable cart 10B with a horizontal jack.

[0080] The movable cart 10B in this embodiment is a housing having an approximately rectangular parallelepiped shape, as shown in Figure 25 (A) etc., and has two wheels W inside it that can run on rails R attached via axles A, and is capable of moving in a predetermined traveling direction (the direction of arrow D in Figure 16).

[0081] In this embodiment, as shown in Fig. 16 and Fig. 18 to Fig. 24, a foldable frame 60B is attached to the rear part 12B in the traveling direction of the movable dolly 10B. The frame 60B is a member for connecting the movable dolly 10B and a rear jack 30B (described later), and is configured so as to be freely deformable between an unfolded state (see Figs. 16, 18, 21, 22, etc.) and a folded state (see Figs. 23, 24).

[0082] 16, 18, 21, 22, etc., the frame 60B has a front connecting beam 61B whose front end (end on the front side in the traveling direction) is fixed to the rear part 12B of the movable carriage 10B, and a pair of rear connecting beams 62B attached to the rear end (end on the rear side in the traveling direction) of the front connecting beam 61B. Two hinge portions 61BH are provided at the rear end of the front connecting beam 61B along the width direction perpendicular to the traveling direction of the movable carriage 10B, and the front end (end on the front side in the traveling direction) of the rear connecting beam 62B is rotatably attached to each hinge portion 61BH.

[0083] The horizontal jack in this embodiment is composed of a front jack (first jack) 20 having one end 20a connected to the lower part 12BL of the rear part 12B of the movable carriage 10B so as to apply a pressing force to the lower part 12BL of the rear part 12B (first part) of the rear part 12B, and a rear jack (second jack) 30B having one end 30Ba connected via a frame 60B to the upper part 12BU of the rear part 12B of the movable carriage 10 so as to apply a pressing force to the upper part 12BU of the rear part 12B. A front clamp (first clamp) 40 that realizes fixing and releasing the rail R is attached to the other end 20b of the front jack 20, and a rear clamp (second clamp) 50 that realizes fixing and releasing the rail R is attached to the other end 30Bb of the rear jack 30B.

[0084] In this embodiment, an example is shown in which the lower portion 12BL of the rear portion 12B of the movable dolly 10B is the "first portion" and the upper portion 12BU of the rear portion 12B is the "second portion", but the upper portion 12BU can be the "first portion" and the lower portion 12BL can be the "second portion". Other portions of the movable dolly 10B can be the "first portion" and the "second portion". For example, the front portion (not shown) of the movable dolly 10B can be the "first portion" and a part of the rear portion 12B of the movable dolly 10B can be the "second portion". Conversely, the front portion (not shown) of the movable dolly 10B can be the "second portion" and a part of the rear portion 12B of the movable dolly 10B can be the "first portion".

[0085] The configurations of the front jack 20, the front clamp 40 and the rear clamp 50 are substantially the same as the configurations of the first jack 20, the first clamp 40 and the second clamp 50 in the first embodiment, so detailed explanations will be omitted.

[0086] The rear jack 30B in this embodiment is composed of a pair of hydraulic jacks 31B and one pneumatic jack 32B. The front ends (ends on the front side in the traveling direction) of the hydraulic jacks 31B are rotatably attached to the rear connecting beams 62B of the frame 60B via a pivot shaft 62BA (see FIG. 22) provided at approximately the center in the longitudinal direction of the rear connecting beams 62B. The rear ends (ends on the rear side in the traveling direction) of the hydraulic jacks 31B are connected to each other by a connecting member 33B as shown in FIGS. 17 to 19 and the like. Then, one pneumatic jack 32B is provided at the center of this connecting member 33B, and the rear end of the pneumatic jack 32B constitutes the other end 30Bb of the rear jack 30B.

[0087] That is, in the first embodiment, the mobile cart 10 is moved by "pushing" or "pulling" each of the "first part 11" and "second part 12" of the mobile cart 10 with both the first jack 20 and the second jack 30, whereas in the present embodiment, the mobile cart 10B is moved by "pushing" the "lower part 12BL" and "upper part 12BU" of the rear part 12B of the mobile cart 10B with the front jack 20 and the rear jack 30B, respectively.

[0088] Furthermore, in this embodiment, two rear connecting beams 62B are rotatably attached to the front connecting beam 61B of the frame 60B, and a rear hydraulic jack 31B is rotatably attached to each rear connecting beam 62B of the frame 60B, so that the frame 60B and the rear hydraulic jack 31B can be folded up as shown in Figures 23 and 24.

[0089] When folding, first, in the unfolded state as shown in Figures 16, 18, 21, 22, etc., the connecting member 33B and the pneumatic jack 32B are removed from the two hydraulic jacks 31B. Next, while the two rear connecting beams 62B are rotated 180° around the two hinge parts 61BH of the front connecting beam 61B so as to open outward, each hydraulic jack 31B is rotated 180° in the opposite direction around the rotation shaft 62BA (see Figure 22) of each rear connecting beam 62B, and finally, the heavy object transport device 1B according to this embodiment is moved to the folded state as shown in Figures 23 and 24. In this way, the heavy object transport device 1B according to this embodiment has an advantage that it is easy to transport because the overall length can be shortened by folding the frame 60B and the rear hydraulic jack 31B.

[0090] Next, a method for transporting the movable dolly 10B and a heavy object placed thereon using the heavy object transporting apparatus 1B according to this embodiment (a method for transporting a heavy object) will be described with reference to FIG.

[0091] 25(A), with the front clamp 40 of the heavy object transport apparatus 1B fixed to the rail R and the rear clamp 50 released from the rail R, the hydraulic jack 21 of the front jack 20 is extended to apply a pressing force to the lower part 12BL of the rear part 12B of the movable cart 10B, thereby moving the movable cart 10B in the traveling direction (first step). In the first step, a reaction force is applied from the front clamp 40, and by extending the rod 21b of the front hydraulic jack 21 by, for example, 500 mm, the movable cart 10B can be moved 500 mm in the traveling direction.

[0092] Next, as shown in Fig. 25(B), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jacks 21 and 31B of the front and rear jacks 20 and 30B are extended to apply a pressing force to the lower part 12BL and upper part 12BU of the rear part 12B of the movable carriage 10B, thereby moving the movable carriage 10B in the traveling direction (second step). In the second step, the front and rear hydraulic jacks 21 and 31B are extended, for example, by 75 mm each, so that the movable carriage 10B can be moved 75 mm in the traveling direction. In the second step, the rear clamp 50 is fixed to the rail R, and at the same time, the front hydraulic jack 21 is extended by receiving a reaction force from the front clamp 40 fixed to the rail R from the first step. The operation of fixing the rear clamp 50 to the rail R takes about 2 to 3 seconds from the start of fixing to completion, but at the same time as starting to fix the rear clamp 50 to the rail R, a reaction force is also applied from the rear clamp 50 to extend the rear hydraulic jack 31B.

[0093] 25(C), with both the front and rear clamps 40, 50 fixed to the rail R, the extension of the hydraulic jack 21 of the front jack 20 is stopped and the hydraulic jack 31B of the rear jack 30B is further extended, thereby extending the pneumatic jack 22 of the front jack 20 and applying a pressing force to the upper part 12BU of the rear part 12B of the movable cart 10B, thereby moving the movable cart 10B in the traveling direction (third step). In the third step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31B is extended by, for example, 50 mm (at this time, the front pneumatic jack 22 is extended by 50 mm), thereby moving the movable cart 10B in the traveling direction by 50 mm.

[0094] Next, as shown in Fig. 25(D), in a state where the front clamp 40 is released from the rail R and the rear clamp 50 is fixed to the rail R, the hydraulic jack 31B of the rear jack 30B is extended to apply a pressing force to the upper portion 12BU of the rear part 12B of the movable carriage 10B, thereby moving the movable carriage 10B in the traveling direction (fourth step). In the fourth step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31B is extended, for example, by 50 mm, so that the movable carriage 10B can be moved 50 mm in the traveling direction. Note that in the fourth step, the operation of releasing the front clamp 40 from the rail R can be performed simultaneously with the operation of extending the rear hydraulic jack 31B by receiving a reaction force from the rear clamp 50 fixed to the rail R from the third step. Since the front pneumatic jack 22 extends until the front clamp 40 is released, the movement of the mobile carriage 10B in the forward direction caused by the extension of the rear hydraulic jack 31B is not impeded.

[0095] 25(E), with the front clamp 40 released from the rail R and the rear clamp 50 fixed to the rail R, the hydraulic jack 21 of the front jack 20 is contracted and the hydraulic jack 31B of the rear jack 30B is extended to apply a pressing force to the upper portion 12BU of the rear portion 12B of the movable carriage 10B, thereby moving the movable carriage 10B in the forward direction (fifth step). In the fifth step, a reaction force is applied from the rear clamp 50, and the rear hydraulic jack 31B is extended by, for example, 500 mm, so that the movable carriage 10B can be moved 500 mm in the forward direction. During this time, both the front hydraulic jack 21 and the pneumatic jack 22 are fully contracted.

[0096] Next, as shown in Fig. 25(F), with both the front and rear clamps 40 and 50 fixed to the rail R, the hydraulic jacks 21 and 31B of the front and rear jacks 20 and 30B are extended to apply a pressing force to the lower part 12BL and upper part 12BU of the rear part 12B of the movable carriage 10B, thereby moving the movable carriage 10B in the direction of travel (sixth step). In the sixth step, the front and rear hydraulic jacks 21 and 31B are extended, for example, by 75 mm each, so that the movable carriage 10B can be moved 75 mm in the direction of travel. In the sixth step, the front clamp 40 is fixed to the rail R, and at the same time, the rear hydraulic jack 31B is extended by receiving a reaction force from the rear clamp 50 fixed to the rail R from the fifth step. The operation of fixing the front clamp 40 to the rail R takes about 2 to 3 seconds from the start of fixing to completion, but at the same time as starting to fix the front clamp 40 to the rail R, a reaction force is also applied from the front clamp 40 to extend the front hydraulic jack 21.

[0097] 25(G), with both the front and rear clamps 40, 50 fixed to the rail R, the extension of the hydraulic jack 31B of the rear jack 30B is stopped and the hydraulic jack 21 of the front jack 20 is further extended, thereby extending the pneumatic jack 32B of the rear jack 30B and applying a pressing force to the lower part 12BL of the rear part 12B of the movable cart 10B, thereby moving the movable cart 10B in the traveling direction (seventh step). In the seventh step, a reaction force is applied from the front clamp 40, and the front hydraulic jack 21 is extended by, for example, 50 mm (at this time, the rear pneumatic jack 32B is extended by 50 mm), thereby moving the movable cart 10B in the traveling direction by 50 mm.

[0098] Next, as shown in FIG. 25(H), in a state where the front clamp 40 is fixed to the rail R and the rear clamp 50 is released from the rail R, the hydraulic jack 21 of the front jack 20 is extended to apply a pressing force to the lower part 12BL of the rear part 12B of the movable carriage 10B, thereby moving the movable carriage 10B in the traveling direction (eighth step). In the eighth step, a reaction force is applied from the front clamp 40, and the front hydraulic jack 21 is extended, for example, by 50 mm, so that the movable carriage 10B can be moved 50 mm in the traveling direction. Note that in the eighth step, an operation of releasing the rear clamp 50 from the rail R can be performed simultaneously with an operation of receiving a reaction force from the front clamp 40 fixed to the rail R from the seventh step to extend the front hydraulic jack 21. Since the rear pneumatic jack 32B extends until the rear clamp 50 is released, the movement of the mobile carriage 10B in the forward direction caused by the extension of the front hydraulic jack 21 is not impeded.

[0099] After the eighth step shown in Fig. 25(H), the process returns to the first step. That is, as shown in Fig. 25(A), the hydraulic jack 21 of the front jack 20 is extended in a state where the front clamp 40 is fixed to the rail R and the rear clamp 50 is released from the rail R, thereby applying a pressing force to the lower part 12BL of the rear part 12B of the movable carriage 10B to move the movable carriage 10B in the forward direction (first step). In the first step, a reaction force is applied from the front clamp 40, and the rod 21b of the front hydraulic jack 21 is extended by, for example, 500 mm, so that the movable carriage 10B can be moved 500 mm in the forward direction. During this time, both the rear hydraulic jack 31B and the pneumatic jack 32B are fully retracted.

[0100] In the method for transporting a heavy load according to the embodiment described above, a pressing force can be continuously applied to the movable carriage 10B throughout all steps from the first step to the eighth step, so that the average moving speed of the movable carriage 10B can be increased (i.e., the moving time can be shortened), and the heavy load can be transported efficiently. Conventionally, when changing the clamp, it was necessary to release the pressing force on the movable carriage 10B and stop the movable carriage 10B once. In contrast, in the present method, since the front and rear jacks 20 and 30B having the "pneumatic jacks 22 and 32B" in addition to the hydraulic jacks 21 and 31B are employed, one pneumatic jack can be slightly extended even after the extension of one hydraulic jack is stopped with both clamps 40 and 50 fixed to the rail R, so that the other hydraulic jack can be extended by that amount to apply a pressing force to the movable carriage 10B (third and seventh steps). Thereafter, the clamp on one jack side is removed from the rail R, while the other hydraulic jack is extended to apply a pressing force to the movable cart 10B (fourth and eighth steps). This has the advantage that it is no longer necessary to stop the movable cart 10B once when changing the clamp, and also that the troublesome deceleration and acceleration operations that accompany stopping (and restarting) the movable cart 10B are no longer necessary.

[0101] Furthermore, in the heavy load transport device 1B according to the embodiment described above, by using the front and rear jacks 20 and 30B having the "pneumatic jacks 22 and 32B" in addition to the hydraulic jacks 21 and 31B, it is possible to continue applying a pressing force to the movable carriage 10B even when changing the clamps. Therefore, since it is not necessary to stop the movable carriage 10B once when changing the clamps, it is possible to increase the average moving speed of the movable carriage 10B (i.e., shorten the moving time), and it becomes possible to transport heavy loads efficiently.

[0102] The present invention is not limited to the above-described embodiments, and those in which a person skilled in the art makes appropriate design changes to such embodiments are also included within the scope of the present invention as long as they include the features of the present invention. In other words, the elements of the above-described embodiments and their arrangements, materials, conditions, shapes, sizes, etc. are not limited to those exemplified, and can be modified as appropriate. In addition, the elements of the above-described embodiments can be combined to the extent technically possible, and combinations of these are also included within the scope of the present invention as long as they include the features of the present invention. [Explanation of symbols]

[0103] 1·1A·1B…Heavy load transport equipment 10・10A・10B…Moving trolley 11...First part (front part, rear part) 11A...front part 12...Second part (front part, rear part) 12A…Back part 12BL…Lower part of rear section (first part) 12BU…Upper part of rear section (second section) 20...First jack (front jack, rear jack, horizontal jack) 21...Hydraulic jack 22...Pneumatic jack 30...Second jack (front jack, rear jack, horizontal jack) 30B…Rear jack (second jack, horizontal jack) 31·31B…Hydraulic jack 32·32B…Pneumatic jack 40...First clamp (front clamp, rear clamp) 50...Second clamp (front clamp, rear clamp) R…Rail

Claims

1. A heavy object transport device configured to transport a heavy object placed on a movable carriage by moving the movable carriage that is installed so as to be able to run on a rail using a horizontal jack, the horizontal jack has a front jack, one end of which is connected to a front portion of the movable carriage in a traveling direction so as to apply a pushing force or a pulling force to the front portion of the movable carriage in a traveling direction, and a rear jack, one end of which is connected to a rear portion of the movable carriage in a traveling direction so as to apply a pushing force or a pulling force to the rear portion of the movable carriage in a traveling direction, A front clamp is attached to the other end of the front jack, which enables the front jack to be fixed to and released from the rail, A rear clamp is attached to the other end of the rear jack, which enables the rear jack to be fixed to and released from the rail, The heavy load transport device, wherein the front and rear jacks include a hydraulic jack arranged at the one end and a pneumatic jack arranged at the other end.

2. A method for transporting a heavy object using the heavy object transport apparatus according to claim 1, comprising the steps of: a first step of extending the hydraulic jack of the front jack in a state where the front clamp is fixed to the rail and the rear clamp is released from the rail, thereby applying a pressing force to the front portion of the movable carriage and moving the movable carriage in a traveling direction; a second step of extending the hydraulic jacks of the front and rear jacks after the first step has been completed, with both the front and rear clamps fixed to the rail, thereby applying a pressing force to the front and rear portions of the movable carriage and moving the movable carriage in a traveling direction; a third step of, after the second step, stopping the extension of the hydraulic jack of the front jack while further extending the hydraulic jack of the rear jack in a state where both the front and rear clamps are fixed to the rail, thereby applying a pressing force to the rear portion of the movable carriage while extending the pneumatic jack of the front jack, thereby moving the movable carriage in a traveling direction; a fourth step of extending the hydraulic jack of the rear jack after the third step, with the front clamp released from the rail and the rear clamp fixed to the rail, thereby applying a pressing force to the rear portion of the movable carriage and moving the movable carriage in a traveling direction; a fifth step of, after the fourth step, contracting the hydraulic jack of the front jack and extending the hydraulic jack of the rear jack in a state where the front clamp has been released from the rail and the rear clamp has been fixed to the rail, thereby applying a pressing force to the rear portion of the movable carriage and moving the movable carriage in a traveling direction; a sixth step of extending the hydraulic jacks of the front and rear jacks after the fifth step, with both the front and rear clamps fixed to the rail, thereby applying a pressing force to the front and rear portions of the movable carriage and moving the movable carriage in a traveling direction; a seventh step of, after the sixth step, stopping the extension of the hydraulic jack of the rear jack while further extending the hydraulic jack of the front jack in a state where both the front and rear clamps are fixed to the rail, thereby applying a pressing force to the front portion of the movable carriage while extending the pneumatic jack of the rear jack, thereby moving the movable carriage in the traveling direction; an eighth step of extending the hydraulic jack of the front jack after the seventh step, with the front clamp fixed to the rail and the rear clamp released from the rail, thereby applying a pressing force to the front portion of the movable carriage and moving the movable carriage in a traveling direction; A method for transporting heavy objects, comprising:

3. A method for transporting a heavy object using the heavy object transport apparatus according to claim 1, comprising the steps of: a first step of applying a tensile force to the rear portion of the movable carriage and moving the movable carriage in a traveling direction by contracting the hydraulic jack of the rear jack in a state where the rear clamp is fixed to the rail and the front clamp is released from the rail; a second step of, after the first step, contracting the hydraulic jacks of the front and rear jacks while both the front and rear clamps are fixed to the rail, thereby applying a tensile force to the front and rear portions of the movable carriage, thereby moving the movable carriage in a traveling direction; a third step of, after the second step, stopping the extension of the hydraulic jack of the rear jack while further contracting the hydraulic jack of the front jack in a state where both the front and rear clamps are fixed to the rail, thereby contracting the pneumatic jack of the rear jack and applying a tensile force to the front portion of the movable carriage to move the movable carriage in the traveling direction; a fourth step of, after the third step, releasing the rear clamp from the rail and fixing the front clamp to the rail, and contracting the hydraulic jack of the front jack in a state where the hydraulic jack of the front jack is contracted to apply a tensile force to the front portion of the movable carriage, thereby moving the movable carriage in a traveling direction; a fifth step of extending the hydraulic jack of the rear jack and contracting the hydraulic jack of the front jack in a state in which the rear clamp has been released from the rail and the front clamp has been fixed to the rail after the fourth step, thereby applying a tensile force to the front portion of the movable carriage and moving the movable carriage in a traveling direction; a sixth step of, after the fifth step, contracting the hydraulic jacks of the front and rear jacks while both the front and rear clamps are fixed to the rail, thereby applying a tensile force to the front and rear portions of the movable carriage, thereby moving the movable carriage in a traveling direction; a seventh step of, after the sixth step, stopping the contraction of the hydraulic jack of the front jack and further contracting the hydraulic jack of the rear jack in a state where both the front and rear clamps are fixed to the rail, thereby contracting the pneumatic jack of the front jack and applying a tensile force to the rear portion of the movable carriage to move the movable carriage in the traveling direction; an eighth step of, after the seventh step, retracting the hydraulic jack of the rear jack in a state where the rear clamp is fixed to the rail and the front clamp is released from the rail, thereby applying a tensile force to the rear portion of the movable carriage and moving the movable carriage in a traveling direction; A method for transporting heavy objects, comprising:

4. A heavy object transport device configured to transport a heavy object placed on a movable carriage by moving the movable carriage that is installed so as to be able to run on a rail using a horizontal jack, the horizontal jack has a front jack, one end of which is connected to a front portion of the movable carriage in a traveling direction so as to apply a pulling force to the front portion, and a rear jack, one end of which is connected to a rear portion of the movable carriage in a traveling direction so as to apply a pushing force to a rear portion of the movable carriage in a traveling direction, A front clamp is attached to the other end of the front jack, which enables the front jack to be fixed to and released from the rail, A rear clamp is attached to the other end of the rear jack, which enables the rear jack to be fixed to and released from the rail, The heavy load transport device, wherein the front and rear jacks include a hydraulic jack arranged at the one end and a pneumatic jack arranged at the other end.

5. A method for transporting a heavy object using the heavy object transport apparatus according to claim 4, comprising the steps of: a first step of applying a tensile force to the front portion of the movable carriage and moving the movable carriage in a traveling direction by contracting the hydraulic jack of the front jack in a state where the front clamp is fixed to the rail and the rear clamp is released from the rail; a second step of, after the first step, contracting the hydraulic jack of the front jack while extending the hydraulic jack of the rear jack in a state where both the front and rear clamps are fixed to the rail, thereby applying a tensile force to the front portion of the movable carriage and a pushing force to the rear portion of the movable carriage, thereby moving the movable carriage in a traveling direction; a third step of, after the second step, stopping the contraction of the hydraulic jack of the front jack and further extending the hydraulic jack of the rear jack in a state where both the front and rear clamps are fixed to the rail, thereby contracting the pneumatic jack of the front jack and applying a pressing force to the rear portion of the movable carriage to move the movable carriage in the traveling direction; a fourth step of extending the hydraulic jack of the rear jack after the third step, with the front clamp released from the rail and the rear clamp fixed to the rail, thereby applying a pressing force to the rear portion of the movable carriage and moving the movable carriage in a traveling direction; a fifth step of extending the hydraulic jack of the front jack and the hydraulic jack of the rear jack in a state in which the front clamp has been released from the rail and the rear clamp has been fixed to the rail after the fourth step, thereby applying a pressing force to the rear portion of the movable carriage and moving the movable carriage in a traveling direction; a sixth step of, after the fifth step, contracting the hydraulic jack of the front jack while extending the hydraulic jack of the rear jack in a state where both the front and rear clamps are fixed to the rail, thereby applying a tensile force to the front portion of the movable carriage and a pushing force to the rear portion of the movable carriage, thereby moving the movable carriage in a traveling direction; a seventh step of, after the sixth step, stopping the extension of the hydraulic jack of the rear jack while further contracting the hydraulic jack of the front jack in a state where both the front and rear clamps are fixed to the rail, thereby applying a tensile force to the front portion of the movable carriage while extending the pneumatic jack of the rear jack, thereby moving the movable carriage in the traveling direction; an eighth step of, after the seventh step, contracting the hydraulic jack of the front jack in a state where the front clamp is fixed to the rail and the rear clamp is released from the rail, thereby applying a tensile force to the front portion of the movable carriage and moving the movable carriage in a traveling direction; A method for transporting heavy objects, comprising:

6. A heavy-duty transport device configured to transport a heavy object placed on a movable carriage by moving the movable carriage, the movable carriage being installed so as to be capable of running on a rail, using a horizontal jack, the horizontal jack includes a first jack having one end connected to a first portion of the movable carriage so as to apply a pressing force to the first portion, and a second jack having one end connected to a second portion of the movable carriage so as to apply a pressing force to the second portion, A first clamp is attached to the other end of the first jack, which realizes fixing and releasing of the first jack from the rail, A second clamp is attached to the other end of the second jack, which enables fixing and releasing the second jack to and from the rail, The first and second jacks comprise a hydraulic jack arranged on the one end side and a pneumatic jack arranged on the other end side.

7. the first portion is a lower portion of a rear portion of the movable carriage, the second portion is an upper portion of a rear portion of the movable carriage, The first jack is a front jack, The second jack is a rear jack arranged rearward of the front jack in the direction of travel, the first clamp is a front clamp; The heavy object transport apparatus according to claim 6 , wherein the second clamp is a rear clamp that is arranged rearward of the front clamp in the traveling direction.

8. A method for transporting a heavy object using the heavy object transport apparatus according to claim 6 or 7, comprising the steps of: a first step of extending the hydraulic jack of the first jack in a state where the first clamp is fixed to the rail and the second clamp is released from the rail, thereby applying a pressing force to the first portion of the movable carriage and moving the movable carriage in a traveling direction; a second step of extending the hydraulic jacks of the first and second jacks after the first step, with both the first and second clamps fixed to the rail, thereby applying a pressing force to the first and second portions of the movable carriage and moving the movable carriage in a traveling direction; a third step of, after the second step, stopping the extension of the hydraulic jack of the first jack and further extending the hydraulic jack of the second jack in a state where both the first and second clamps are fixed to the rail, thereby applying a pressing force to the second portion of the movable carriage while extending the pneumatic jack of the first jack, thereby moving the movable carriage in a traveling direction; a fourth step of extending the hydraulic jack of the second jack after the third step, in a state in which the first clamp is released from the rail and the second clamp is fixed to the rail, thereby applying a pressing force to the second portion of the movable carriage and moving the movable carriage in a traveling direction; a fifth step of, after the fourth step, contracting the hydraulic jack of the first jack and extending the hydraulic jack of the second jack in a state where the first clamp has been released from the rail and the second clamp has been fixed to the rail, thereby applying a pressing force to the second portion of the movable carriage and moving the movable carriage in a traveling direction; a sixth step of extending the hydraulic jacks of the first and second jacks after the fifth step, with both the first and second clamps fixed to the rail, thereby applying a pressing force to the first and second portions of the movable carriage and moving the movable carriage in a traveling direction; a seventh step of, after the sixth step, stopping the extension of the hydraulic jack of the second jack while further extending the hydraulic jack of the first jack in a state where both the first and second clamps are fixed to the rail, thereby applying a pressing force to the first portion of the movable carriage while extending the pneumatic jack of the second jack, thereby moving the movable carriage in a traveling direction; an eighth step of extending the hydraulic jack of the first jack after the seventh step, in a state in which the first clamp is fixed to the rail and the second clamp is released from the rail, thereby applying a pressing force to the first portion of the movable carriage and moving the movable carriage in a traveling direction; A method for transporting heavy objects, comprising:

9. A control device configured to execute the first to eighth steps of the method for transporting heavy objects according to claim 2 or 3 by controlling the jack and the clamp in the heavy object transport apparatus according to claim 1.

10. A control device configured to execute the first to eighth steps of the method for transporting heavy objects according to claim 5 by controlling the jack and the clamp in the heavy object transport apparatus according to claim 4.

11. A control device configured to execute the first to eighth steps of the method for transporting heavy objects according to claim 8 by controlling the jack and the clamp in the heavy object transport apparatus according to claim 6 or 7.

12. A program for causing a computer to execute the first to eighth steps of the method for transporting a heavy object according to claim 2, 3, 5 or 8.

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