JP2001171986A - Raising device of heavy structure, and juck-up construction using thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the raising work of a heavy structure. SOLUTION: This raising device 2 of the heavy structure 1 consists of a holding shaft 3 whose tip is connected to the bottom of the heavy structure 1, to the supporting position of the heavy structure to be lifted; a rotating frame 4 installed rotatable horizontally at a specific angle around the above holding shaft; and plural number of raising frames 111 to 119 which are provided concentric around the above rotating frame 4, and form similar figures at the height same as the rotating frame 4. When the rotating frame 4 which rises together with the holding shaft 3, every time when the heavy structure 1 rises one step, is rotated a specific angle, the raising frames 111 to 119 are loaded in order, under the rotating shaft 4, and connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device used in a method of gradually raising a heavy structure such as a bridge to a required height one step at a time, and a jack-up method for a heavy structure using the device. About.

[0002]

2. Description of the Related Art A large crane is generally used to lift a large heavy structure such as a bridge to a height of several meters. However, large cranes cannot be used in many cases when the site is a densely populated area, a commercial and industrial area, or the like. In such a case, a jack-up method has been conventionally used.

In the jack-up method, as shown in FIG. 43, a hydraulic cylinder (single-acting type) 31 as a jack is installed under a heavy structure 1 to be lifted, and its piston rod 32 is extended to reduce the weight. The structure 1 is raised to a certain height. Next, as shown in FIG. 44, a raising material 33 such as a cutting board is inserted between the raised heavy structure 1 and the ground surface, and the raised height is raised. Further, FIG.
As shown in the figure, a raising board 34 such as a board is also inserted into the bottom of the hydraulic cylinder 31 in which the piston rod 32 is contracted,
Raise the hydraulic cylinder. By repeating the above operations (1) to (6), the heavy structure 1 is lifted step by step to a required height.

[0004]

However, in the above-described conventional jack-up method, each time the heavy structure 1 is raised by one step, the bottom of the heavy structure 1 and the bottom of the hydraulic cylinder 31, which is a jack, are respectively attached to the wooden blocks. Raising material 33 such as
In addition, an operation of manually inserting the raising stand 34, that is, a so-called raising operation must be performed.

[0005] Such a raising operation requires a large number of personnel and is a dangerous operation requiring careful care.
It often took days to lift heavy structures by just a few meters.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a lifting device capable of mechanizing the above-mentioned lifting operation and performing the operation quickly and safely.
And a jack-up method using the raising device.

[0007]

A lifting device according to the present invention for achieving the above object is a lifting device used in a construction method in which a heavy structure is raised step by step at a constant height. A support shaft of a required length to which the tip is connected to the bottom of the object, a polygonal rotary frame attached to the support shaft so as to be horizontally rotatable by a predetermined angle, and a rotation concentrically arranged around the rotary frame It is composed of a plurality of raised frames having the same height as the frame and having a similar shape. Then, every time the heavy structure rises by one step, when the rotating frame that has been raised together with the support shaft is rotated by a predetermined angle, a plurality of raised frames are positioned below the rotating frame one outside of the rotating frame. The heavy structures are stacked in a stepwise manner and connected to each other to raise the weight structure.

[0008] A double-acting hydraulic cylinder in which a force acts in both directions of "extension" and "contraction" of a piston rod is used as a support shaft of the raising device, and the tip of the piston rod is connected to the bottom of a heavy structure. Alternatively, a rotating frame may be mounted around the cylinder barrel so as to be horizontally rotatable by a predetermined angle. In this case, each time the heavy structure rises,
When the piston rod is extended and contracted in accordance with this, the rotating frame can be raised to the bottom side of the heavy structure together with the cylinder barrel by the contracting force.

The rotating frame of the raising device and the plurality of raising frames disposed therearound are all rectangular and have the same length as the short side of the frame whose long side is located one outside. Then, it is recommended that the short side be stacked on the long side of the frame located one outside when rotated by 90 degrees.

The jack-up method according to the present invention includes first to third types. In the first jack-up method, two lifters of the present invention, each using a double-acting hydraulic cylinder as a support shaft, are arranged in parallel at a support point at the bottom of a heavy structure as a set, and the ends of these piston rods are weight-structured. Connect to the bottom of the object. Then, the piston rods of both raising devices are simultaneously extended to raise the heavy structure to a certain height, and then the piston rod of one raising device is contracted, and the contraction force causes the bottom of the heavy structure together with the cylinder barrel. The rotating frame that has risen to the side is horizontally rotated by a predetermined angle, and then the piston rod of the other raising device is contracted, and the rotating frame that has risen to the bottom side of the heavy structure together with the cylinder barrel is horizontally rotated by the contracting force by a predetermined angle. The above operations are repeated. Thus, each time the heavy structure rises by one step and rises, a plurality of raising frames are sequentially stacked under the rotating frames of both raising devices in order from the one located outside one of the rotating frames. , So that the lifting of the hydraulic cylinders, which are heavy structures and jacks, are connected automatically.

In a second jack-up method, a lifting device of the present invention using a double-acting hydraulic cylinder as a support shaft is disposed at a support point at the bottom of a heavy structure to be lifted via a balancer, and its piston is provided. Along with connecting the rod tip to the center of the lower surface of the balance board, on both left and right sides sandwiching the piston rod on the lower surface of the balance board, connecting mechanisms are provided on both upper and lower surfaces at the same height as the rotating frame and the raising frame in the raising device. A connection mechanism with the provided raising block is provided. Further, a guide for carrying in / out the raising block from outside is provided immediately below the both connecting mechanisms. Then, the piston rod of the lifting device is extended, and when the heavy structure rises one step to a certain height, the lifting block is carried in just below both the connecting mechanisms of the balancer, and connected to the connecting mechanism, and the weight is increased by these lifting blocks. After supporting the structure, the piston rod is contracted, and the contraction force causes the rotating frame, which has risen to the lower surface side of the balance board together with the cylinder barrel, to rotate horizontally by a predetermined angle. Thus, each time the heavy structure rises one by one, and each time the heavy structure rises, the raising blocks are sequentially stacked and connected under the left and right connection mechanisms on the lower surface of the balance board, so that the heavy structure is raised and the lifting device is raised. Under the rotating frame, a raising frame is sequentially stacked and connected in a stepwise manner from a position located one outside of the rotating frame, so that a hydraulic cylinder as a jack is raised.

According to a third jack-up method, a balancer is brought into contact with a support point at the bottom of a heavy structure to be lifted, and a central portion of the lower surface of the balancer is provided with a raised block on the lower side around the cylinder barrel. The distal end of a piston rod of a double-acting hydraulic cylinder surrounded by a block having a constant height and having a coupling mechanism is coupled. In addition, a connecting mechanism with a raising block is provided on both left and right sides of the lower surface of the balance board with the piston rod interposed therebetween. Further, a guide is provided directly below the hydraulic cylinder and the connecting mechanism on the left and right of the balance board for loading and unloading a raised block having a connecting mechanism on the upper and lower surfaces at the same height as the block body from outside. Then, the piston rod of the hydraulic cylinder is extended in a state in which one lifting block is connected to the left and right connecting mechanisms of the balance board in advance, and when the heavy structure rises to a certain height by one step, the left and right connecting mechanisms of the balance board are connected. To bring in a new raised block,
This is connected under the raising block connected earlier, then the piston rod is contracted, and the raising block is carried in under the block body which has risen to the lower surface side of the balance board together with the cylinder barrel by the contraction force. Is repeated with the block body. With this, a new lifting block is stacked under the connecting mechanism on the left and right of the balancer, every time the heavy structure rises one step and rises,
While being connected, the weight structure is raised,
A new raising block is also stacked below the block body, and is connected so that the hydraulic cylinder serving as a jack is raised.

[0013]

1 to 4 show an example of a lifting device according to the present invention. FIGS. 1 and 2 are a plan view and a longitudinal side view showing a state before operation, and FIGS. It is the top view and longitudinal section which show the state after operation completion.

As shown in these figures, a lifting device 2 of the present invention comprises a support shaft 3 connecting a tip to the bottom of a heavy structure 1 to be lifted, and a horizontally rotatable predetermined angle around the support shaft. It comprises a rotating frame 4 attached thereto and a plurality of raised frames 11 _{1 to} 11 ₉ concentric about the rotating frame and having the same height as the disposed rotating frame and having a similar shape. And
Each time the heavy structure 1 is lifted by one step using a hydraulic jack or a crane, the rotating frame 4 that rises with the support shaft 3 is horizontally rotated by a predetermined angle (rotated 90 degrees in the illustrated example). 11 _{1 to} 11 ₉ are sequentially stacked and connected in a stepwise manner so that the lifting amount is automatically raised.

That is, the support shaft 3 is made of metal,
As shown in FIG. 5, the diameter is 190 mm and the length is L640 mm. At the front end of the support shaft 3, an attachment liner 3 a for connecting the front end to the bottom of the heavy structure 1 with a bolt and integrating it with the heavy structure 1 is provided.
Further, a flange 3b for attaching a rotating frame 4 described later is provided around the body of the support shaft 3.

The rotating frame 4 is shown in FIGS. 7 and 8 in the illustrated example by using a channel steel (web U length: 300 mm, width of upper and lower flanges Fa and Fb: 80 mm) having a sectional shape shown in FIG. Like long side Lx900mm, short side Ly700m
m, a rectangular frame having a height T of 300 mm.
In the center of the rotating frame 4, a ring-shaped socket 5 is provided horizontally on the basis of a reinforcing rib 4a arranged in a well shape in the frame. The rotating frame 4 is attached so that the socket 5 is fitted to the flange 3 b of the support shaft 3 and is rotatable around the support shaft 3. The rotating frame 4 is attached so that the upper surface thereof substantially coincides with the tip of the support shaft 3.

The rotating frame 4 is provided with a rotating mechanism 6. The rotation mechanism 6 includes a conductive belt 8 wound around the support shaft 3 via two pulleys 7, 7, a hydraulic cylinder 9 formed by connecting the tip of a piston rod 9 a to the conductive belt 8, A hydraulic pump 10 for operating the hydraulic cylinder 9 and the like. When the piston rod 9a of the hydraulic cylinder 9 is extended and the conduction belt 8 is driven, the rotating frame 4 rotates by a predetermined angle about the support shaft 3 as an axis. Has become. In the illustrated example, the rotating frame 6 is rotated by the rotating device 6.
The piston rod 9a is rotated just 90 degrees.
Stroke amount is adjusted.

A plurality of concentrically arranged rotation frames 4
Raised frame (9 in the example shown) 11 ₁~ 11₉No
These are also rectangular frames similar to the rotating frame 4, and the rotating frame 4
And is formed of the channel steel shown in FIG. these
Raising frame 11₁~ 11₉Is, as shown in Table 1,
In this case, the long side Lx is the short side Ly of the frame positioned outside the long side Lx.
It is formed to the same length as. Therefore, any frame, example
For example, frame 11_TwoAnd rotate it 90 degrees horizontally.
Frame 11 whose both short sides Ly are located one outside each_Three
On both long sides Lx of_TwoTo frame 11_ThreeStacked on top
You can sleep. The long side Lx of the rotating frame 4 is bulky.
Frame 11₁Of the same length as the short side Ly of
When the frame 4 is horizontally rotated 90 degrees in the same manner as described above, the rotating frame 4
Raising frame 11₁It is designed to stack on top.

[0019]

[Table 1]

The rotating frame 4 and the raising frames 11 _{1 to} 11 ₉ are provided on the portion where they are stacked with each other, as shown in FIGS.
0 is provided. That is,
When the tip of the rivet 13 protruding from the lower surface of the lower flange Fb is pushed up on both short sides Ly of these frames (for example, 11 ₂ ), the hammer 14 rotates downward, and the hammer head 14 a having a cam shape is hooked. A hook 15 is provided which pushes down the top 15a against the spring 16 and pushes the hook tip 15b downward from the inside of the through hole 17 of the lower flange Fb.

Further, these on both long sides Lx of the frame (e.g., 11 _3), the flange Fa portion on the frame 11 _{and second} one inner stacked, one inside of the frame 11 ₂ which is formed in the through hole A through hole 18 communicating with the through hole 17 is provided.
At the bottom of 8, a cross bar 19 for opening and closing the through hole 18 is provided. The cross bar 19 is provided between the horizontally long slots 20 and 20 provided opposite to the wall surfaces on both sides of the through hole 18. When the inside of the slots 20 and 20 is slid to one end side, the cross bar 1 is formed.
When the through-hole 18 is closed just below the position 8 and slid toward the other end, the through-hole 18 is opened outside the through-hole 18. A tension in the “close” direction is applied to the crosspiece 19 by the weight 21, and when the slide is slid in the “open” direction, the crossbar 19 automatically returns to the “close” direction.

According to the connecting mechanism 12 described above, on the frame 11 _3, the frame 11 _second one inner pile up, a rivet 13 the tip of the frame 11 ₂ is pushed up against the flange Fa on the frame 11 _3, in which In conjunction with the through hole 1 from the frame 11 ₂
The tip 15b of the hook pushed downward through 7
Entering through the through-hole 18 in the lower part of the frame 11 in _3. At this time, the hook tip 15b forcibly slides in the "open" direction with the impact force of the hammer 14 to enter the crosspiece 19 at the "closed" position at the bottom of the through hole 18. Hook tip 15b
Passes through the crosspiece 19, the crosspiece 19 returns in the "closed" direction, and engages in a bar shape on the hook tip 15b to form the through hole 18
Prevent from falling off. Frames 1 stacked in this way
1 _2, 11 ₃ How to connection is automatically performed.

In order to use the lifting device 2 having the above structure, as shown in FIG. 11, a plurality of the lifting devices 2 are prepared, and the required supporting points (see FIG. In the example shown, they are arranged at the four corners). And then
As shown in FIGS. 1 and 2, the distal end of the support shaft 3 of each device 2 is connected to the weight structure 1 via an attachment liner 3a.
Connect to the bottom of Each device 2 is placed on the gantry 22 so that the bottom of the support shaft 3 does not contact the ground surface.

Next, as shown in FIG.
The weight structure 1 is raised one step by 3 or the like. The rising amount in this case is determined by the frame of the raising device 2 (the rotating frame 4 and the raising frame 11).
The height T ( _{1 to} 11 ₉ ) is set to 330 mm by adding a required clearance Cm (30 mm in the illustrated example) required for rotation of the rotating frame 4 to the height T (300 mm in the illustrated example).

When the heavy structure 1 rises one step, the rotating frame 4
Next, as shown in FIG. 13, these rotating frames 4 are horizontally rotated around the supporting shaft 3 by 90 degrees by driving the rotating mechanism 6 of the rotating frame 4 as shown in FIG.

Next, by operating the crane 23, FIG.
As shown in the figure, the weight structure 1 is moved to the clearance Cm (30
mm). Then, these rotating frames 4 rotated by 90 degrees become the raising frames 11 located outside the rotating frames 4.
Piles in the form of orthogonal over _1, working mutual coupling mechanism 12 at the same time, the rotary frame 4 and the additional frame 11 ₁ is connected. Thus, the height T (300 mm) min only heavy construction 1 of the rotary frame 4 stacked on the raising frame 11 ₁ is raised, raising the work in the first stage is completed.

The raising work of the second and subsequent stages is performed in accordance with FIGS.
The operations described in FIG. Thus, under the rotating frame 4, each time the heavy construction 1 is raised one step, raising frame 11 ₁ to 11 ₉ of the same height as the rotating frame, sequentially from one located on one outer side of the rotary frame Since they are stacked and connected, the weight structure 1 is automatically raised. Thus, in the case of the illustrated example, as shown in FIGS. 3 and 4, the heavy structure 1 can be raised up to 10 steps (3 m in height) by 300 mm.

FIG. 15 shows another embodiment of the apparatus of the present invention. This uses a double-acting hydraulic cylinder 25 (maximum thrust: 100 t, stroke length of the piston rod 24: 400 mm) in which a force acts in both directions of “extension” and “contraction” of the piston rod 24 as the support shaft 3. At the tip of the piston rod 24, an attachment liner 24a for connecting to the bottom of the heavy-duty structure 1 is provided, and around the cylinder barrel 26, a flange 26a for rotatably mounting the rotary frame 4 is provided. It is. The rotating frame 4 is attached to the flange 26a such that the upper surface thereof substantially coincides with the upper end of the cylinder barrel 26.

In the raising apparatus using a double-acting hydraulic cylinder for the support shaft as described above, as shown in FIG. 16, when the heavy structure 1 is raised by the crane 23 or the like, the lifting amount (for example, 330 mm) is reduced. At the same time, the piston rod 24 of the hydraulic cylinder 25 is extended. Next, as shown in FIG. 17, the piston rod 24 is completely contracted (0 m
m), the contraction force causes the cylinder barrel 26
Moves to the distal end side of the piston rod 24 connected to the bottom of the heavy structure 1, and accordingly, the rotating frame 4 moves the heavy structure 1.
Will rise 330 mm to the side.

FIGS. 18 to 26 illustrate a jack-up method for a heavy structure using the raising device of the present invention.

That is, as shown in FIG. 18, a raising device using a double-acting hydraulic cylinder 25 as a support shaft is
As a set of bases 2A and 2B, pedestals 22 are provided at a plurality of support points (four corners in the illustrated example) on the bottom of the heavy structure 1 to be lifted.
To be arranged in parallel. And, as shown in FIG.
The distal end of the piston rod 24 of the hydraulic cylinder 25 of each assembly device is connected to the bottom of the heavy structure 1 via the attachment liner 24a. The hydraulic cylinder 25 and the lifting device 2 of each of the jacking devices 2A are used as one jack 2A of each assembly device as a jack-up side and the other 2B as a raising side.
The hydraulic cylinders 25 of B are operated synchronously.

Then, as shown in FIG. 20, the piston rod 24 of the jack-up device 2A is extended by a certain amount, and the heavy structure 1 is raised one step. At the same time, the piston rod 24 of the raising device 2B is also extended by the same amount. The amount of extension of both piston rods 24 at this time is 330 m obtained by adding the required rotation clearance Cm (30 mm in the illustrated example) to the height T (300 mm) of the rotating frame 4.
m.

Next, as shown in FIG. 21, the piston rod 24 of the raising device 2B is made unloaded and completely contracted (0 mm). The rotating frame 4, which has been raised 330 mm to the bottom of the heavy structure 1 together with the cylinder barrel 26 by this contraction force, is driven to rotate horizontally by 90 degrees by driving the rotating mechanism 6. Because they occurred rotation clearance Cm of 30mm between the rotating frame 4 and the additional frame 11 ₁ to 11 ₉ elevated, 30mm piston rod 24 of the raising-side device 2B
Extend. Then, as shown in FIG. 22, the rotating frame 4 of the raising device 2B is moved together with the cylinder barrel 26 by 30 degrees.
mm, and the raised frame 11 ₁ located on the outside of the
Pile on top of, at work coupling mechanism 12 of each other, the rotary frame and the additional frame 11 ₁ is connected. Thereby, the weight structure 1 is moved from the original position by the height of the rotating frame 4 (300 m).
m), which means that it has been raised one step further.

Next, as shown in FIG. 23, the piston rod 24 of the jack-up device 2A is set to no load,
Shrink completely (0 mm). Then, with this contraction force, 330 m to the bottom side of the heavy structure 1 together with the cylinder barrel 26.
The rotating frame 4 that has risen by m is rotated 90 degrees horizontally by driving the rotating mechanism 6. The raised rotating frame 4 and the raised frame 11 ₁ to 1
Since a rotational clearance Cm of 30 mm is generated between the piston rod 24 and ₁₉ , the piston rod 24 of the jack-up device 2A is extended by 30 mm. Then, as shown in FIG. 24, the rotary frame 4 of the jack-up-side device 2A and 30mm downward with the cylinder barrel 26, pile on the raising frame 11 ₁ is located in its one outer side, the coupling mechanism 12 of each other worked, the rotary frame 4 and the additional frame 11 ₁ is connected. As a result, the hydraulic cylinder 25 of the jack-up side device 2A, which is the main jack of the heavy structure 1, is raised one step by the height (300 mm) of the rotary frame 4.

As described above, when the above operations (1) to (4) are repeated, the heavy structure 1 rises one step at a time, and each time the heavy structure 1 rises one step, the weight frame 1 is placed below the rotating frames 4 and 4 of both devices 2A and 2B. A plurality of raised frames 11 _{1 to} 11 ₉ having the same height (300 mm) are sequentially stacked and connected in order from the one located outside one of the rotating frames. Therefore, the work of raising the heavy structure 1 and the hydraulic cylinder 25 for jacking up the heavy structure 1 is automatically performed. Incidentally, in the case of the illustrated example, as shown in FIGS. 25 and 26, the heavy structure 1 can be raised by 300 mm in ten steps (height: 3 m).

FIGS. 27 to 34 illustrate another jack-up method of the present invention. That is, as shown in FIG. 27, the lifting device 2 of the present invention is disposed at a plurality of support points on the bottom of the heavy structure 1 to be lifted via the rectangular balance board 27. The raising device 2 uses a double-acting hydraulic cylinder 25 as a support shaft. The lifting device 2 is mounted on a gantry 22 and the tip of a piston rod 24 is connected to the center of a balance board 27 by an attachment liner 24a. A coupling mechanism 1 with a raising block 28 is provided on both left and right sides of the lower surface of the balance board 27 that sandwich the piston rod 24.
2 ′ and 12 ′ are provided. The raising block 28 is a wooden square block (600 mm long × 600 mm wide) having the same height (300 mm) as the rotating frame 4 of the raising device 2, and has the same connection on both upper and lower surfaces as shown in FIGS. 6 and 7. A mechanism 12 is provided. Further, the connection mechanism 12 ′,
Immediately below 12 ', the gantry 22 is arranged, and a guide 29 such as a roller conveyor for carrying in and out the raising block 28 from outside is laid on the upper surface thereof.

Further, in order to secure a clearance Cm (20 mm in the illustrated example) required for rotation of the rotary frame 4, the piston rod 24 is extended by 20 mm in advance, and the connecting mechanisms 12 ', 12' on the left and right of the balance board 27 are provided. Then, one raising block 28 is applied and connected via a spacer board 30 each having a thickness of 20 mm.

Then, as shown in FIG. 28, the piston rod 24 of the raising device 2 is extended, and the weight structure 1 is raised one step to a certain height via the balance board 27. At this time, the amount of extension of the piston rod 24 is determined by the height T of the rotary frame 4.
(300 mm) plus a clearance of 20 mm 32
0 mm.

Next, as shown in FIG.
Immediately below the left and right connecting mechanisms 12 ′, 12 ′, a raising block 28 is carried in from outside via guides 29. The raised block 28 carried in and the left and right coupling mechanisms 1
Since a clearance Cm of 20 mm is generated between the raised block 28 previously connected to 2 ′ and 12 ′,
As shown in FIG. 30, by contracting the piston rod 24,
The heavy structure 1 is lowered by 20 mm. Then, the balance board 2
7 Raised blocks 28 previously connected to the left and right connecting mechanisms 12 ′, 12 ′ are stacked on the newly loaded raised blocks 28, and connected by the connecting mechanisms 12 of each other. Thereby, the height (300 m) of the raising block 28 into which the heavy structure 1 is newly carried in from the original position.
m).

Next, as shown in FIG. 31, the piston rod 24 is made unloaded and completely contracted (0 mm). Then, the rotating frame 4, which has risen by 320 mm to the bottom side of the heavy structure 1 together with the cylinder barrel 26 by this contraction force, is horizontally rotated 90 degrees by driving the rotating mechanism 6. Since increased rotational clearance Cm of 20mm between the rotating frame 4 and the additional frame 11 ₁ to 11 ₉ occurs, the piston rod 24 to 20mm extension. Then, as shown in FIG. 32, the rotating frame 4 is moved together with the cylinder barrel 26 by 20 mm.
Lowered to, pile on the raising frame 11 ₁ is located in its one outer side, at work coupling mechanism 12 of each other, the rotary frame 4
And the additional frame 11 ₁ is connected. Thereby, the hydraulic cylinder 25 which is a lifting jack of the heavy structure 1
This means that the height has been raised by the height (300 mm) of the rotating frame 4.

As described above, when the above operations (1) to (4) are repeated, the weight structure 1 rises one step at a time, and each time the heavy structure 1 rises one step, a new one is placed under the connecting mechanisms 12, 12 on the left and right of the balance board 27. The raised blocks 28 to be carried in are sequentially stacked and connected, and the rotating frame 4 of the raising device 2 is rotated.
The lower, raising frame 11 ₁ to 11 ₉ are connected stacked sequentially stepwise from the one located on one outer side of the rotary frame. Therefore, the work of raising the heavy structure 1 and the hydraulic cylinder 25 for jacking up the heavy structure 1 is automatically performed. By the way, in the case of the illustrated example, FIG.
As shown in FIG. 34, the heavy structures 1
It can be raised to the 0 stage (height 3m).

FIGS. 35 to 42 illustrate another jack-up method of the present invention. That is, as shown in FIG. 35, the double-acting hydraulic cylinder 25 is disposed at a plurality of support points on the bottom of the heavy structure 1 to be lifted via the rectangular balance board 27. The hydraulic cylinder 25 is
The upper periphery of the cylinder barrel 26 is connected to the lower surface by the connecting mechanism 12.
Block body 28 '(600 mm long x 600 m wide)
mx 300 mm in height).
, And the end of the piston rod 24 is connected to the center of the lower surface of the balance board 27 by an attachment liner 24a and arranged. Immediately below the hydraulic cylinder 25, a guide 29a such as a roller conveyor for carrying in and out the raising block 28 having the same size as the block body 28 'and having the coupling mechanism 12 on both upper and lower surfaces from outside is laid. (FIG. 41
reference). The piston rod 2 on the lower surface of the balance board 27
4 are provided on both left and right sides with the connecting mechanism 12 ′, 12 ′ connected to the raising block 28, and directly below these connecting mechanisms 12 ′, 12 ′, for loading and unloading the raising block 28 from outside. Guide 29b, 2 similar to the above
9c is laid.

Further, in order to secure a clearance Cm (20 mm in the illustrated example) necessary for the vertical connection of the raising block 28, the piston rod 24 is extended by 20 mm in advance, and the connecting mechanisms 12 ', 1
One raising block 28 is connected to 2 ′ via a spacer plate 30 having a thickness of 20 mm, and is connected.

Then, as shown in FIG. 36, the piston rod 24 of the double-acting hydraulic cylinder 25 is extended, and the heavy structure 1 is raised one step to a fixed height via the balance board 27. At this time, the extension amount of the piston rod 24 is set to 320 mm obtained by adding a clearance amount Cm of 20 mm to the height T (300 mm) of the raising block 28.

Next, as shown in FIG.
Immediately below the left and right connecting mechanisms 12 ′, 12 ′, a raising block 28 is provided from outside via guides 29 b, 29 c, respectively.
Carry in. Since a clearance Cm of 20 mm is generated between the carried-in raising block 28 and the raising block 28 previously connected to the left and right connecting mechanisms 12 ', 12', the piston rod 24 is moved as shown in FIG. By slightly contracting, the heavy structure 1 is lowered by 20 mm. Then, the raising blocks 28 previously connected to the connecting mechanisms 12 ′, 12 ′ on the left and right of the balance board 27 are stacked on the newly loaded raising blocks 28, and the connecting mechanisms 1
2 works and is connected. As a result, the weight structure 1 is raised by the height (300 mm) of the raising block 28 newly carried in from the original position.

Next, as shown in FIG. 39, no load is applied to the piston rod 24 of the hydraulic cylinder 25, and the piston rod 24 is completely contracted (0 mm). With this contraction force, the cylinder barrel 26
Block 28 'surrounding the balance 320m toward the balance board 27 side
m, the raising block 28 is carried in from the outside via the guide 29a directly below the raised block body 28 '. At this time, a rotation clearance Cm of 20 mm is provided between the lifted block 28 and the block body 28 ′.
Occurs, the piston rod 24 is extended by 20 mm. Then, as shown in FIG.
8 'descends 20mm together with the cylinder barrel 26,
The blocks are stacked on the raising block 28, and the mutual connection mechanism 12 works, so that the block body 28 'and the raising block 28
And are connected up and down. As a result, the hydraulic cylinder 25 serving as a lifting jack for the heavy structure 1 is raised by the height (300 mm) of the block body 28 '.

By repeating the above operations (1) to (4), the weight structure 1 rises one step at a time, and each time the heavy structure 1 rises one step, a new one is placed under the connecting mechanisms 12, 12 on the left and right of the balance board 27. The raised blocks 28 to be carried in are sequentially stacked and connected, and the raised blocks 28 to be newly carried in are also sequentially stacked and connected under the block body 28 '. Therefore, the work of raising the heavy structure 1 and the hydraulic cylinder 25 for jacking up the heavy structure 1 is automatically performed. Incidentally, in the case of the illustrated example, as shown in FIG. 41 and FIG.
It can be raised in 10 steps (3 m in height) by 00 mm. In addition, unlike the other raised blocks 28, the raised blocks 28 that are connected first below the block body 28 'have a split structure in which the lower blocks 28 abut on the lower periphery of the cylinder barrel 26 from both sides and are combined into one block. .

In each of the above embodiments, the raising device
The rotating frame 4 and the raising frame 11 of the installation 2 ₁~ 11₉The rectangle
Pentagon or hexagon
And other polygons. Also, rotating frame
4 and raising frame 11₁~ 11₉Size and raising frame 1
1₁~ 11₉Also, the number of
It can be changed as needed. further,
The rotation mechanism 6 and the connection mechanism 12 are also limited to the embodiment.
Instead, other effective means may be adopted. Especially consolidation
As the mechanism 12, a mechanism using a magnet or the like is considered.
You.

[0049]

As described above, according to the lifting apparatus of the present invention, in the method of stepwise raising the heavy structure step by step, the stepwise raising of the heavy structure conventionally performed manually. Work is automated. In addition, the lifting device using the compound hydraulic cylinder for the support shaft not only can automate the stepwise lifting operation of the heavy structure, but also can be used as a hydraulic jack itself for lifting the heavy structure. The stepwise lifting operation of the jack can be automated. Furthermore, according to the jack-up construction method of the present invention, both the stepwise raising operation of the heavy structure and the raising operation of the hydraulic jack for raising the heavy structure stepwise are automated. Therefore, this kind of work can be remarkably speeded up and safety can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state before operation of a raising device of the present invention.

FIG. 2 is a vertical sectional side view of FIG.

FIG. 3 is a plan view showing a state after the operation of the raising device of the present invention is completed.

FIG. 4 is a vertical sectional side view of FIG. 3;

FIG. 5 is a sectional view of a main part for explaining a support shaft.

FIG. 6 is a sectional view of a channel steel forming a rotating frame and a raising frame.

FIG. 7 is a plan view illustrating the structure of a rotating frame.

8 is a vertical sectional side view of FIG. 7;

FIG. 9 is a vertical sectional view of a main part for explaining a coupling mechanism.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

FIG. 11 is a plan view showing an installation example of the raising device of the present invention.

FIG. 12 is a side view illustrating the operation procedure of the raising device of the present invention.

FIG. 13 is a side view for explaining the operation procedure of the raising device of the present invention.

FIG. 14 is a side view for explaining the operation procedure of the raising device of the present invention.

FIG. 15 is a cross-sectional view of a principal part explaining another embodiment of the raising device of the present invention.

FIG. 16 is a side view for explaining the operation of the raising device of the present invention shown in FIG.

FIG. 17 is a side view for explaining the operation of the raising device of the present invention shown in FIG.

FIG. 18 is a plan view illustrating a first jack-up method of the present invention.

FIG. 19 is a side view for explaining step by step the first jack-up method of the present invention.

FIG. 20 is a side view for explaining the first jack-up method of the present invention step by step.

FIG. 21 is a side view for explaining step by step the first jack-up method of the present invention.

FIG. 22 is a side view for explaining the first jack-up method of the present invention step by step.

FIG. 23 is a side view for explaining the first jack-up method of the present invention step by step.

FIG. 24 is a side view for explaining the first jack-up method of the present invention step by step.

FIG. 25 is a plan view showing a completed state of the first jack-up method of the present invention.

FIG. 26 is a side view showing a completed state of the first jack-up method of the present invention.

FIG. 27 is a side view for explaining step by step the second jack-up method of the present invention.

FIG. 28 is a side view for explaining stepwise the second jack-up method of the present invention.

FIG. 29 is a side view for explaining step by step a second jack-up method of the present invention.

FIG. 30 is a side view for explaining step by step the second jack-up method of the present invention.

FIG. 31 is a side view for explaining step by step a second jack-up method of the present invention.

FIG. 32 is a side view for explaining step by step the second jack-up method of the present invention.

FIG. 33 is a plan view showing a completed state of the second jack-up method of the present invention.

FIG. 34 is a side view showing a completed state of the second jack-up method of the present invention.

FIG. 35 is a side view for explaining a third jack-up method of the present invention step by step.

FIG. 36 is a side view for explaining the third jack-up method of the present invention step by step.

FIG. 37 is a side view for explaining the third jack-up method of the present invention step by step.

FIG. 38 is a side view for explaining step by step a third jack-up method of the present invention.

FIG. 39 is a side view for explaining step by step a third jack-up method of the present invention.

FIG. 40 is a side view for explaining the third jack-up method of the present invention step by step.

FIG. 41 is a plan view showing a completed state of the third jack-up method of the present invention.

FIG. 42 is a side view showing a completed state of the third jack-up method of the present invention.

FIG. 43 is a side view for explaining a conventional jack-up method step by step.

FIG. 44 is a side view for explaining the conventional jack-up method step by step.

FIG. 45 is a side view for explaining the conventional jack-up method step by step.

[Explanation of symbols]

1 heavy construction 2 raising device 3 supporting shaft 4 rotating frame 6 rotating mechanism 11 ₁ to 11 ₉ raising frame 12 connecting mechanism 24 a piston rod 25 double acting hydraulic cylinder 26 cylinder barrel 27 balance Release 28 raising block 28 'block body 29 guide 30 Spacer board

Claims (6)

[Claims] An apparatus for raising a heavy structure, which is used in a method of raising the heavy structure step by step at a constant height, wherein a leading end is connected to a bottom of the heavy structure to be lifted. A supporting shaft 3 having a length, and a polygonal rotating frame 4 which is attached to the supporting shaft so as to be horizontally rotatable by a predetermined angle.
And a plurality of raised frames 11 _{1 to} 11 ₉ having similar shapes at the same height as the rotating frame arranged concentrically around the rotating frame, and each time the heavy structure 1 is raised by one step, it is supported. When the rotary frame 4 which has risen with the shaft 3 rotated by a predetermined angle, a plurality of raising frame 11 ₁ to 11 ₉ under the rotary frame 4 are sequentially piled in stages from being located on one outer side of the rotary frame, An apparatus for raising a heavy structure, wherein the apparatus is configured to be connected. 2. A double-acting hydraulic cylinder 25 in which force acts in both directions of "extension" and "contraction" of a piston rod is used as a support shaft, and the tip of the piston rod 24 is connected to the bottom of the heavy-duty structure 1. By attaching the rotating frame 4 around the cylinder barrel 26 so as to be able to rotate horizontally by a predetermined angle,
Each time the heavy structure 1 is raised by one step, the piston rod 24 is extended and contracted in accordance with this, and the contraction force causes the rotary frame 4 to rise to the bottom side of the heavy structure 1 together with the cylinder barrel 26. The apparatus for raising a heavy-weight structure according to claim 1, wherein: 3. A rotary frame 4, and a plurality of raised frame 11 ₁ to 11 ₉ arranged therearound are both a rectangular shape, and the short sides of the frame long side Lx is located in one outer Ly When the entire frame is horizontally rotated 90 degrees, the short side Ly of the long side L of the frame is positioned one outside.
The lifting device for a heavy structure according to claim 1, wherein the device is configured to be stacked on x. 4. The lifting device 2 according to claim 2 is arranged side by side at a support point at the bottom of the heavy structure 1 to be lifted as a set of two units 2A, 2B, and the ends of the piston rods 24 are connected to the heavy structure. 1, the piston rods 24 of both lifting devices are simultaneously extended to raise the heavy structure to a certain height, and then the piston rod 24 of one lifting device 2A is contracted and its contraction force is increased. The rotary frame 4 which has been raised to the heavy structure 1 side together with the cylinder barrel 26 is horizontally rotated by a predetermined angle, and then the other lifting device 2
B, the piston rod 24 is contracted, and the rotating frame 4 that has risen to the heavy structure side together with the cylinder barrel 26 by the contracting force.
The weight structure 1 is raised one step at a time, and each time the weight structure 1 rises, a plurality of lifting frames 11 are provided below the rotating frames 4 of both lifting devices 2A and 2B. ₁ to 11 _9, characterized in that sequentially stacking stepwise from the one located on one outer side of the rotary frame 4, are connected, and so raising the hydraulic cylinder 26 is made a heavy construction 1 and jack Jacking up method. 5. The lifting device 2 according to claim 2, which is disposed at a support point on the bottom of the heavy structure 1 to be lifted via a balancer 27, and the piston rod 2 of the double-acting hydraulic cylinder 26 is provided.
4 While connecting the tip to the center of the lower surface of the balance 27,
On the lower left and right sides of the balancer 27 sandwiching the piston rod 24, at the same height as the rotating frame 4 in the raising device 2,
Raising block 2 having coupling mechanism 12 on both upper and lower surfaces
8 are provided, and the raising block 2 is provided immediately below the left and right connecting mechanisms 12 ', 12'.
A guide 29 for loading / unloading the weight 8 from the outside is provided, and when the piston rod 24 of the lifting device 2 is extended and the weight structure 1 rises one step to a certain height, the left and right connecting mechanism of the balance board 27 is moved. The raising block 28 is carried in just below 12 ', 12', and connected to the connecting mechanism 12 'to support the 28-weight structure 1 with these raising blocks. Then, the piston rod 24 is contracted, and its contraction force is reduced. By rotating the rotating frame 4 raised to the lower surface side of the balance board 27 together with the cylinder barrel 26 horizontally by a predetermined angle, the weight structure 1 rises one step at a time, and each time the weight structure 1 rises, the balance board 27 Raising blocks 28 are sequentially stacked and connected below the left and right connecting mechanisms 12 ′, 12 ′ on the lower surface to raise the heavy-weight structure 1 and, under the rotating frame 4 of the raising device 2, Up frame 11 ₁
To 11 ₉ are connected pile sequentially stepwise from the one located on one outer side of the rotary frame 4, a jack-up method being characterized in that as raising of the hydraulic cylinder 25 is made a jack. 6. A balancer 27 is brought into contact with a support point on the bottom of the heavy structure 1 to be lifted, and
Raising block 2 around the cylinder barrel 26 on the lower surface side
Block body 2 having a connecting mechanism 12 'for connection with a fixed height 8
Connecting ends of the piston rods 24 of the double-acting hydraulic cylinder 25 surrounded by 8 'are provided, and connecting mechanisms 12' and 12 'for connecting to the raising blocks 28 are provided on both sides of the lower surface of the balance board which sandwich the piston rods 24. And the hydraulic cylinder 2
5 and a guide 29a for loading / unloading the raising / lowering block 28 having the connecting mechanism 12 on both upper and lower surfaces from the outside at the same height as the block body 28 'immediately below the connecting mechanisms 12', 12 '. , 29b, and 29c, respectively, and previously connect the left and right connecting mechanisms 12 ', 12' of the balance board 27.
With one raised block 28 applied to the bottom and connected
When the piston rod 24 of the hydraulic cylinder 25 is extended and the heavy structure 1 rises to a certain height, a new raising block 28 is carried in below the connecting mechanisms 12 ′, 12 ′ on the left and right of the balance board 27, and this is lifted. Raising block 2 connected earlier
8, the piston rod 24 is contracted, and a new raising block 28 is carried in under the block body 28 'which has risen to the lower surface side of the balance board 27 together with the cylinder barrel 26 by the contracting force. This is a block 2
By repeating the operations of connecting to 8 ′, the heavy structure 1 rises one by one, and each time it rises, a new raising block 28 is stacked under the connecting mechanisms 12 ′ and 12 ′ on the left and right of the balancer, The weight structure 1 is raised by being connected, and a new raising block 28 is stacked under the block body 28 'so that the hydraulic cylinder with a jack is raised by being connected. Jack-up method.