JPH07196287A - Jackup method for structure and its device - Google Patents

Abstract

PURPOSE:To enable jackup and down work with a simple, small sized device by installing a contraction/extension device in between one end of a balancer beam and a structure above it and jacking up the balancer beam by contracting and extending in the device repeatedly. CONSTITUTION:When ground pads 5, 6 are to be lifted from ground surface, first, by driving a hydraulic cylinder 7 and thus contracting a piston rod 9, the side of an outer end 3a of a balancer beam 3 is raised up along with a structure 1 with a ground pad 3b at an end of the beam as the fulcrum. A suitable shim board 11 is then inserted under the ground pad 5 raised. Then, the piston rod 9 in the hydraulic cylinder 7 is extended. Thus, the beam end 3b on the opposite side is raised. Another shim board is inserted into a gap formed between the ground pad 6 below and ground surface. Accordingly, contraction/extraction of the piston rod 9 are repeated alternately. At each time, a shim board 11,... is inserted, being thus staked up, so that a structure is heightened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack-up method for levitating a structure by a forced pivotal movement of a balancer pivotally supported on the lower part of the structure from the structure side, and a useful method for carrying out this method. Jacking device for various structures, especially the moving device part of a large traveling structure of balancer type is lifted from the ground to change direction, pass obstacles on the ground, or between running rails with different heights or installation The present invention relates to a jacking-up method and device for a large-sized traveling structure which is useful for transferring to a place or the like.

[0002]

2. Description of the Related Art Conventionally, a method of jacking up a ground structure has been performed by slightly lifting a structure by manually or hydraulically or electrically interposing a jack device between the lower bottom portion of the structure and the ground. . In principle, the jacking up of a large traveling structure having a balancer type traveling device is also the same in principle.For example, after installing a large jack under the balancer beam and jacking up the entire structure, The balancer beam of the traveling device is turned around the vertical axis to change the direction. In order to eliminate the inconvenience, inefficiency, or dangerous work of installing a large jack under the structure each time, an electric jack device that can be switched with a clutch is installed in the center of the balancer beam, and the balancer beam is lifted to change direction. An easy turning device for a hoist has already been disclosed (Japanese Utility Model Publication No. 30-1435). This is provided with a vertical axis that can be moved up and down by screw feed in the center of the balancer beam, and pushes the vertical axis toward the ground through the bevel gear by the output of the electric motor with the clutch engaged and is pivotally supported by the balancer beam. The wheels are floated from the ground or rails to change direction.

[0003]

In any of the methods for jacking up a large structure by installing a large jack below the balancer of a large traveling structure, it is necessary to secure a receiving point under the structure. Therefore, a large number of auxiliary equipment for jacking up is required, and since jacking up work is performed from the outside of the structure, the jack installation position is limited. Generally, this type of jack-up requires work in a narrow space, which causes a problem in ensuring work safety. Further, the jack-up work is complicated and requires labor and time.

The above-described direction changing device for a hoist having a built-in electric jack must be a place where a rail pushing block, which is a receiving point of the vertical axis at the center of the balancer beam, can be installed at the time of jacking up. Since only one axis supports the entire weight of the hoist, it is necessary to reinforce the rail side so that the supporting position does not lower. Further, if the rigidity of the vertical axis and its supporting portion is increased so as to withstand the weight of the upper body, the overall shape becomes large and large. Further, this device has a problem that the whole structure such as a plurality of bevel gears, a clutch member, and a screw feeding mechanism on the vertical axis is complicated, resulting in high cost.

According to the present invention, a structure having a balancer at its lower portion can be jacked up and down in a short time efficiently, safely, and without using any special accessory, whereby a large-sized running structure can be obtained. It is an object of the present invention to provide a jack-up method and a jack-up device that can easily change the direction of the carriage and transfer it to a step position.

[0006]

According to the method of jacking up a structure according to the present invention, a balancer beam having an intermediate portion pivotally supported on a lower bottom portion of the structure and a balancer beam from the structure side with the pivot point as a fulcrum is used. It is characterized in that one side is pulled up or pushed down toward the ground to raise the one side or the other side of the balancer beam.

In the jack-up device for a structure according to the present invention, a telescopic actuator is pivotally mounted between one side part of the balancer beam and the side part of the structure. The expansion / contraction actuating device has a driving capacity sufficient for one side of the balancer beam to float due to the reaction force from the ground side driven by the actuating device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial side view of a heavy structure having a jack-up device according to an embodiment of the present invention.
2 (A) and 2 (B) are diagrams showing the operation when jacking up in the embodiment of FIG. 4 of this structure
In this embodiment, the balancer mounted in the corner is pivotally supported by the middle portion of the balancer beam 3 via the pin 2 on the lower bottom portion of the structure main body 1, and also by the pins 4 on both lower ends of the balancer beam 3. The ground pads 5 and 6 have a structure in which the middle portion thereof is pivotally supported. A telescopic actuator, which is a hydraulic cylinder 7 in this embodiment, is pivotally mounted between the lengthwise outer end 3a of each balancer beam 3 and the side of the structure body 1. The hydraulic pressure is supplied to the hydraulic cylinder 7 by a hydraulic pump unit 8 mounted on an appropriate portion of the main body 1.

In order to lift the ground pads 5 and 6 from the ground in this embodiment, first, as shown in FIG. 2A, the hydraulic cylinder 7 is driven to contract the piston rod 9 thereof. As a result, the balancer beam 3 is biased upward along with the structure body 1 on the beam outer end 3a side with the ground pad 6 at the end 3b on the opposite side (inner side) of the cylinder device 7 side as a fulcrum, and the ground on the lower side thereof. The pad 5 rises above the ground 10. At this time, the ground pad 6 supports the entire structure in cooperation with the ground pads attached to the balancer beam of the equipment provided at the three corners of the bottom of the structure. Therefore, an appropriate shim plate 11 is sandwiched below the floating ground pad 5, and this time the piston rod of the hydraulic cylinder device 7 is extended. As a result, as shown in FIG. 2B, the balancer beam 3 floats up on the opposite side (inner side) of the beam end 3b with the ground pad 5 on the shim plate 11 below the hydraulic cylinder 7 as a fulcrum.
Since there is a gap between the ground pad 6 and the ground 10 directly below it, another shim plate 12 is inserted into this gap. The hydraulic cylinders at the other corners of the structure body 1 are also sequentially urged in the same manner to sandwich the shim plate under each grounding pad, and the piston rod retracting / extruding operation is alternately performed for the hydraulic cylinders at each corner. Each time, the shim boards are inserted and piled up to increase the height of the structure. When the structure raised by the insertion of the shim plates 11 and 12 is lowered onto the ground, the shim plates are sequentially removed from between the grounding pads which are lifted by the operation contrary to the above.

FIGS. 3 and 4A and 4B are partial side views showing another embodiment of the present invention. In this embodiment, wheels 14 and 15 are rotatably supported on both ends of a balancer beam 3 pivotally mounted on the lower bottom portion of the structure main body 1 via swivel brackets 13 and can travel on a rail 16. Each bracket 13 is pivotable with respect to the balancer beam 3 about a vertical axis of the bracket 13. As described with reference to FIG. 1, the hydraulic cylinder 7 is pivotally mounted between the side portion of the structure body 1 and the outer end portion 3 a of the balancer beam 3, and the piston rod is pulled by the biasing of the hydraulic cylinder 7 to cause the drawing. As shown in FIG. 4 (A), one side of the balancer beam 3 immediately below the cylinder and the wheel 14 thereunder float up with the other wheel 15 as a fulcrum, and the piston rod 9 is pushed out to balance the hydraulic cylinder 7 on the opposite side (inner side). The end of the beam, and thus the wheel 15 directly below it, is shown in FIG.
As shown in (B), it floats above the rail 16. 1 and 2 (A) and (B) under the floating wheels 14 or 15.
As described above, the height of the entire structure can be increased by sandwiching a shim plate or the like, and the bracket 13 for pivotally supporting the wheel 14 or 15 in a state where the wheel 14 or 15 is lifted up from the rail 16 is used. The structure can be turned to change the traveling direction of the structure. The driving capacity of the hydraulic cylinder is selected so that the balancer beam 3 is tilted around its intermediate pivot point against the weight of the structure and one end of the beam is lifted together with the structure. It

FIG. 5 is a partial side view showing still another embodiment of the present invention. In this case, sled plates 17 having a wide plate surface are fixed to the bottoms of both ends of the balancer beam 3. An expansion / contraction actuating device 18 similar to that of the above-described embodiment is pivotally mounted between the outer end 3a of the balancer beam 3 and the structure main body 1, and the expansion / contraction operations of the expansion / contraction actuating device 18 make one end of the sled plate 17 a fulcrum. The upper part floats from the other end of the sled plate 17. In this embodiment, a large number of roller rods 19 are arranged between a wide sled plate 17 and the ground 10, and the sled plate 17 is used as a seat for the roller rods 19 to roll the roller rods 19 and run the structure. It is a thing. It is easy to insert the roller rod 19 underneath with one side of the sled plate 17 floating, and it is also easy to change the direction of the roller rod 19 by 90 °, which allows the structure to change direction. Becomes

Next, a practical use example of the present invention will be described with respect to a traveling structure of a type in which wheels are provided below the balancer beam. FIG. 6 is a perspective view showing a rail arrangement relationship when a heavy-duty traveling structure is loaded from an assembly plant on a berth 20 to be transported to a destination and is transferred from a quay to a land-side traveling rail 21 at the destination. is there. A bridge beam rail 23 and a rampway rail 24 are arranged at right angles to the quay on the loading / unloading yard 22 of the assembly factory adjacent to the shipping port, and on the berth 20, vertical and horizontal transfer rails 25, 26 are arranged. Further, there is provided a carriage 27 that can travel on the vertical transfer rail 25. Note that, as clearly shown in FIG. 6, the carriage 27 has a pair of carriages 27 with respect to the wheel shape of the traveling structure to be carried.
One end of each of a and 27b is detachably bolted to each other, and four members are provided so as to support four corners of the structure. On the other hand, a traveling rail 21 for moving a heavy traveling structure is laid on a quay 28 at a destination far from the assembly factory, and the structure is moved from the top of the pier 20 to the traveling rails 21 having different heights as described later. A slide rail 29 and a land side bridge beam rail 30 for transfer, a land side rampway 31 connecting the bridge beam rail 30 and the slide rail 29, a vertical side transfer rail 25 and a slide rail 29 on the pier 20. A sea-side rampway 32, etc. that connects the two is installed. In this embodiment, the slide rail 29 is constituted by a pair of slide rails 29a and 29b abutting against the pair of carriages 27a and 27b.

The heavy-duty traveling structure in this embodiment includes:
A pair of wheel bearings 36a and 36b are pivotally attached to the lower ends of both ends of the main balancer beam 34 as illustrated in FIG. 7 via sub-balancer beams 35a and 35b which are respectively rotatable about a vertical axis. Each wheel support 36
The motors 37 for driving the wheels are mounted on the wheels a and 36b, and the hydraulic cylinder 7 is pivotally mounted between the structure body 1 and one end of the main balancer beam 34 as in the above-described embodiment. . In the embodiment shown in FIG. 6, the heavy-duty traveling structure has wheels traveling on the bridge beam rail 23 and the rampway rail 24 of the loading / unloading yard 22 at the shipping port, and the transport carriage 27 (the rampway) on the pier 20 laterally attached to the quay. It is transferred via the pedestal 33 on the pontoon 20) (aligned with the rail 24 at the same height). In this state, the pontoon 20 sails to the above-mentioned destination, and after berthing on the quay 28 of the destination, the carrier 27 on the trolley 20 moves to the land side on the rail 25 and the seaside ramp. After passing through the way 32 and the land-side bridge beam rail 30, the structure is transferred from the carriage 27 to the land. At this time, the height and direction of the transport carriage 27 and the land-side traveling rail 21 are different, so The rear traveling rails 21 transferred onto the slide rails 29 stacked in three stages
Get down. FIG. 7 shows the truck 2 on the ramp way 32 on the sea side.
7 shows the order of transferring the structures from 7 to the slide rail 29.

First, FIG. 7 (A) is a side view of the structure seen from the traveling direction of the carriage 27 when the carriage 27 travels up to the slide rail 29. As shown in FIG. 7B, the hydraulic cylinder 7 is urged to end the end portion 34a of the main balancer beam 34 on the cylinder arrangement side and the sub balancer beam 3 below the end portion 34a.
5a and a pair of wheel supports 36a are one side of the carriage 2
It rises from 7a. Here, the transport carriage 27a below it
Has been retracted and removed (Fig. 7B as seen from the arrow F of Fig. 7B).
(See (C)), the wheel support 36a on this side is placed on the upper slide rail 29a. Next, as shown in FIG. 7 (D), the hydraulic cylinder 7 is stretched and urged to lift up the main balancer beam end 34b on the side opposite to the cylinder 7 and the wheel support 36b therebelow, and in the same manner, The other lower carrier 27b moves backward, and the sea-side and land-side rampways 32 and 31 on both sides of the slide rail 29 are removed (Fig. 7).
(E)), the state shown in FIG. The white arrows in the figure indicate removal or movement.

Next, the hydraulic cylinder 7 is contracted and urged again to float the main balancer beam end 34a and the wheel support 36a on the cylinder side from the upper slide rail 29a as shown in FIG. 8B. 29a is removed (FIG. 8 (C)), and this time the hydraulic cylinder 7 is urged to push, and the main balancer beam end 34b on the side opposite to the cylinder 7 and the other one below it are pushed as shown in FIG. 8 (D). Wheel support 36
b is floated from the other upper slide rail 29b and the upper slide rail 29b is removed. The middle slide rail and the lower slide rail are sequentially removed one by one by the same procedure, the structure is moved onto the traveling rail 21 as shown in FIG. 8 (E), and the urging of the hydraulic cylinder 7 is set to a free state to perform the traveling. It travels and is transported on the rail 21.

The above is the case where the traveling structure is carried by the carrier truck. As shown in FIG. 9A, the slide rail 2 is used.
When the above structure travels on the ramp way rail 38 that intersects at right angles with 9, the hydraulic cylinder 7 is extended and contracted at the position of the slide rail 29 to urge the hydraulic cylinder 7 to float on one side, as shown in FIG. As shown in (C), the sub balancer beams 35a and 35b on the floating side are turned 90 ° about the vertical axis to align the traveling direction of the structure with the direction of the slide rail 29.

[0017]

As described above, according to the present invention, a balancer beam is provided by simply providing an expansion / contraction actuating device between one end of the balancer beam and a structure above the balancer beam and allowing the actuating device to be pushed out and retracted. Can be jacked up,
Since it does not push up from the ground as in the past, it is a jack up operation of the structure from the fuselage side, so there is no need for a jack receiving point on the ground, and jack up and down work at any place and without taking up work space You can The auxiliary equipment required for jacking up is at most a shim board, and depending on the purpose of jacking up, auxiliary equipment is not necessary at all, and the structure of the device is extremely simple, resulting in a significant cost reduction. Since the jack device is integrated with the structure side, it is useful for transporting large traveling structures such as mobile cranes, and has various excellent effects such as extremely easy operation and safety and speed of work. Be brought.

[Brief description of drawings]

FIG. 1 is a partial side view of a heavy structure having a jack-up device according to one embodiment of the present invention.

FIG. 2 is a partial side view showing a jack-up operation in the embodiment shown in FIG.

FIG. 3 is a partial side view of a jack-up device according to another embodiment of the present invention.

FIG. 4 is a side view showing a jack-up operation in the embodiment shown in FIG.

FIG. 5 is a partial side view of still another embodiment of the present invention.

FIG. 6 is a perspective view showing an arrangement configuration of a structure conveying rail for explaining a specific example of use of the present invention.

FIG. 7 is a diagram showing a sequence of jacking up and transferring a structure in a usage example of the present invention.

FIG. 8 is a diagram showing a sequence of jacking up and transferring a structure in a usage example of the present invention.

FIG. 9 is a diagram showing an operation of changing the direction by jacking up a structure in a use example of the present invention.

[Explanation of symbols]

 1 Structure Main Body 2, 4 Pins 3 Balancer Beam 5, 6 Ground Pad 7 Hydraulic Cylinder 8 Hydraulic Pump Unit 14, 15 Wheel 17 Sliding Plate 19 Roller Bar 20 Barge 21 Travel Rail 22 Carrying In / Out Yard 27 Transport Cart 29 Slide Rail

Claims (4)

[Claims] Claim: What is claimed is: 1. A balancer beam, the middle portion of which is pivotally supported at the lower bottom of a structure, and one side of the balancer beam being pulled up from the structure side or being pushed down toward the ground with the pivot point as a fulcrum. A method for jacking up a structure, characterized in that one side or the other side is raised. 2. The balancer beam on one side from the structure side is alternately pulled up and pushed down, and a spacer is inserted or removed between the balancer beam and the ground. The method for jacking up the structure described in. 3. A telescopic actuator is pivotally mounted between one side of the balancer beam, the middle part of which is pivotally supported on the lower bottom of the structure, and the side of the structure, and the telescopic actuator is A jack-up device for a structure, which has a driving capacity sufficient for one side of the balancer beam to be levitated by a reaction force from the ground side driven by an actuator. 4. The balancer beam according to claim 3, wherein traveling wheels are mounted on at least both sides of a bottom portion of the balancer beam, and when one side of the balancer beam is levitated, the one side wheel is also levitated from the ground. Structure jack-up device.