Method for moving a boring machine lifting platform and boring machine

Abstract

This invention provides a boring machine lifting platform and a method for moving a boring machine that allow for easy movement of the boring machine even when there are headroom restrictions. [Solution] In a boring machine lifting frame 1, which is made up of steel materials for raising the boring machine for connecting the casing, pipe materials (support pipe 6 and sheath pipe 7) are installed at a position directly below the outrigger OR of the boring machine BH, and the pipe materials (support pipe 6 and sheath pipe 7) are pressed by the hydraulic pressure of the outrigger OR of the boring machine BH, making it possible to jack up the frame to a height into which a hand pallet can be inserted.

Description

Technical Field

[0001] The present invention relates to a hoisting gantry of a boring machine and a method for moving the boring machine. More specifically, it relates to a hoisting gantry of a boring machine and a method for moving the boring machine when performing prior drilling by the BH method to remove obstacles in the case of obstacles in the steel sheet pressing method.

Background Art

[0002] Conventionally, a steel sheet pressing method for pressing a reinforcing steel sheet or a temporary cutting panel into the ground in a reinforcement work for reinforcing an existing pier and foundation or a temporary cutting work for performing the work is known. For example, in Patent Document 1, a temporary structure part 31 (temporary cutting) is installed around a pier which is an existing structure 1 in water to construct a dry space, and then a reinforcing steel sheet 51 is pressed around the existing structure 1 by a pressing device 61 for reinforcement. A method for reinforcing an existing structure is disclosed (see Claim 1 of the claims of Patent Document 1, paragraphs

[0019] to

[0043] of the specification, FIGS. 1 to 11 of the drawings, etc.).

[0003] When implementing such a steel sheet pressing method, if there are obstacles such as stones in the steel sheet pressing range, it becomes impossible to press. Therefore, after performing prior drilling by the BH (large diameter boring) method to remove the obstacles, steel sheet pressing is carried out.

[0004] In this BH (large diameter boring) method, in order to ensure drilling accuracy, soil concrete with a thickness t = 200 mm is placed, and a metal expansion anchor and an eyebolt are attached thereto and fixed to the machine with a lever block (registered trademark) to prevent core deviation due to machine movement. In addition, a casing is used in combination to guide and prevent core deviation when hitting an obstacle such as a stone.

[0005] At this time, for example, when using a casing with L = 1.0 m, since it is raised with steel materials for casing connection to secure the working height for casing connection, it is necessary to move the boring machine upward and raise it around a pier with a headroom limit.

[0006] Traditionally, when moving a boring machine upwards to raise its height, for example, a small crawler crane with a lifting capacity of 4.9 tons would be used to lower and temporarily place the boring machine (BH machine), then the mounting frame would be positioned in the designated location, and finally the boring machine would be lifted and installed. However, this method of moving a boring machine upwards under a bridge presents the following problems: it is difficult to secure a temporary storage space, there are headroom restrictions, and it is necessary to insert the boom under the beam from a distance to lift the heavy boring machine, resulting in a large working radius and a risk of the lifting machine tipping over. Furthermore, there is the problem that it is not possible to secure sufficient lifting space for the lifting machine under the bridge beam. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 6740503 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] Therefore, the present invention was devised in view of the aforementioned problems, and its objective is to provide a boring machine lifting platform and a method for moving a boring machine that can easily move the boring machine even when there are headroom limitations. [Means for solving the problem]

[0009] The boring machine lifting platform according to the first invention is a boring machine lifting platform that incorporates steel materials for raising the boring machine for connecting the casing, and is characterized in that a pipe material is installed at a position directly below the outrigger of the boring machine, and the pipe material is pressed by the hydraulic pressure of the outrigger of the boring machine, allowing the boring machine to be jacked up to a height into which a hand pallet can be inserted.

[0010] The boring machine lifting platform according to the second invention is characterized in that, in the first invention, the pipe material has a double-pipe structure consisting of a support pipe made of steel pipe and a sheath pipe that houses the support pipe so that it can be extended and retracted, a fixing bolt is attached to the sheath pipe, and the support pipe is configured to be fixed at any height with the fixing bolt.

[0011] The boring machine lifting platform according to the third invention is characterized in that, in the second invention, the uppermost steel member is configured so that one end protruding from the other steel members can be folded with a hinge.

[0012] The method for moving a boring machine according to the fourth invention is a method for moving a boring machine by placing the boring machine on a boring machine lifting stand described in any of claims 1 to 3, characterized in that it includes a raising step of pressing the pipe material of the boring machine lifting stand with the hydraulic pressure of the outriggers of the boring machine to jack it up and secure a height for inserting a hand pallet, a hand pallet placing step of jacking down with the hydraulic pressure of the outriggers after inserting the hand pallet and placing the boring machine lifting stand and the boring machine on the hand pallet, and moving the boring machine using the hand pallet while the boring machine lifting stand and the boring machine are placed on the hand pallet.

[0013] The method for moving a boring machine according to the fifth invention is characterized in that, in the fourth invention, a metal expansion anchor is driven into the concrete floor surrounding the boring machine lifting platform in advance to fix one end of a winch, and a reaction force is obtained from the concrete floor to pull the boring machine lifting platform and the boring machine, which are placed on the hand pallet, with the winch to move them. [Effects of the Invention]

[0014] According to the first to fifth inventions, the boring machine can be easily moved to the next drilling position even when there are headroom restrictions, by using the hydraulic pressure of the boring machine's outriggers to press down on the pipe material of the boring machine's lifting platform, jacking it up and placing it on a hand pallet, without using lifting equipment such as a crawler crane.

[0015] In particular, according to the third invention, when placing the boring machine lifting platform and boring machine on the hand pallet, the protruding end of the uppermost steel member is folded with a hinge, so that the protruding end does not get in the way when moving.

[0016] In particular, according to the fifth invention, metal expansion anchors are driven into the surrounding concrete slab in advance to obtain a reaction force from the concrete slab, and the boring machine lifting platform and boring machine, which are placed on a hand pallet, are towed and moved by a winch. Therefore, even when there are headroom restrictions, the boring machine can be moved to the next drilling position more easily and in a shorter time. [Brief explanation of the drawing]

[0017] [Figure 1] Figure 1 is a front view showing a boring machine lifting frame 1 according to an embodiment of the present invention. [Figure 2] Figure 2 is a horizontal cross-sectional view looking down along line AA in Figure 1. [Figure 3] Figure 3 is a horizontal cross-sectional view looking down along the BB line in Figure 1. [Figure 4] Figure 4 is a horizontal cross-sectional view looking down along the CC line in Figure 1. [Figure 5] Figure 5 is a plan view showing the lifting platform for the boring machine. [Figure 6] Figure 6 is a side view showing the boring machine placed on the boring machine lifting platform. [Figure 7] Figure 7 shows a conventional method of moving a boring machine using a crane. [Figure 8]FIG. 8 is a view showing a state in which an H-shaped steel with a height of 100 mm is installed under the gantry for inserting a hand pallet. [Figure 9] FIG. 9 is a view showing a state in which a joining plate of a sheath tube of an outrigger of a bowling machine and a gantry for lifting the bowling machine is bolted. [Figure 10] FIG. 10 is a process explanatory view showing a jacking-up process of a moving method of the bowling machine according to the present embodiment. [Figure 11] FIG. 11 is a process explanatory view showing a hand pallet placing process of the moving method of the same bowling machine. [Figure 12] FIG. 12 is a process explanatory view showing a moving process of the moving method of the bowling machine according to the present embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] Hereinafter, an embodiment of a gantry for lifting a bowling machine and a moving method of the bowling machine according to the present invention will be described in detail with reference to the drawings.

[0019] <Gantry for Lifting Bowling Machine> First, the gantry 1 for lifting the bowling machine according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6. FIG. 1 is a front view showing the gantry 1 for lifting the bowling machine according to the embodiment of the present invention. Further, FIG. 2 is a lowered horizontal sectional view taken along line A-A of FIG. 1, and FIG. 3 is a lowered horizontal sectional view taken along line B-B of FIG. 1. And FIG. 4 is a lowered horizontal sectional view taken along line C-C of FIG. 1, and FIG. 5 is a plan view showing the gantry 1 for lifting the bowling machine.

[0020] As shown in FIGS. 1 to 5, the gantry 1 for lifting the bowling machine according to the present embodiment is a gantry for lifting the bowling machine BH in which steel materials are combined with a well girder, and as described above, it is a member for jacking up the bowling machine BH to a position higher than the ground (dirt floor concrete DC) for connection of the casing (see also FIG. 6).

[0021] As shown in Figure 2, the boring machine lifting frame 1 is equipped with a pair of left and right first steel members 2,2 which are the lowest steel members. In this embodiment, the first steel members 2 are made of H-shaped steel with dimensions H-350×350×12×19.

[0022] Furthermore, the lower flange of the first steel member 2 has a notch 2a formed in accordance with the octagonal outer shape of the base plate 6a so as not to interfere with the base plate 6a of the support pipe 6, which is made of carbon steel pipe for piping (JIS G3452) as described later.

[0023] As shown in Figure 3, the boring machine lifting frame 1 is equipped with a pair of second steel members 3a and 3b, which are a second stage of steel members, stretched across a pair of left and right first steel members 2 in a direction perpendicular to these first steel members 2. These second steel members 3a and 3b are made of H-shaped steel of H-200×200×8×12. These second steel members 3a and 3b and the aforementioned first steel members 2 are bolted together with M22 bolts. Of course, the second steel members 3a and 3b and the first steel members 2 may also be joined by other joining methods such as welding (the same applies hereafter).

[0024] Furthermore, the second steel member 3a on the front side has its central section cut to create an opening, allowing access to the area beneath the frame for tasks such as casing connection.

[0025] As shown in Figure 4, a pair of third steel members 4, 4, which constitute the third stage of steel members, are stretched across these second steel members 3a, 3b in a direction perpendicular to the second steel members 3a, 3b. These third steel members 4 are made of H-shaped steel with dimensions H-350×350×12×19. These third steel members 4 and the aforementioned second steel members 3a, 3b are bolted together with M22 bolts.

[0026] As shown in Figure 5, a pair of front and rear fourth steel members 5,5, which are the uppermost steel members on which the fourth boring machine BH is placed, are stretched across the third steel members 4,4 in a direction perpendicular to the third steel members 4,4. These fourth steel members 5 are made of H-shaped steel with dimensions H-100×100×6×8. These fourth steel members 5 and the aforementioned third steel members 4 are bolted together with M16 bolts.

[0027] Furthermore, as shown in Figure 1, one end 5a of the fourth steel member 5, which is the uppermost steel member, protrudes outward from the third steel member 4 to serve as a work platform for operating the boring machine. As will be described later, when moving the boring machine lifting platform 1 using a hand pallet HP, the one end 5a is pivotable via a hinge 5b so that it can be folded down.

[0028] In addition, as shown in Figures 6 and 1 to 5, the boring machine lifting platform 1 is configured to be jacked up by the hydraulics of the boring machine BH's outriggers by installing a double-pipe structure consisting of a support pipe 6 and a sheath pipe 7 directly below the outriggers of the boring machine BH, in order to secure the height for inserting the hand pallet HP, as will be described later. Figure 6 is a side view showing the boring machine BH placed on the boring machine lifting platform 1.

[0029] The support pipe 6 is a 50mm diameter pipe made of carbon steel pipe for piping (JIS G3452), with a base plate 6a installed at its lower end. This support pipe 6 is configured to be retractably housed within a sheath pipe 7, which is a 65mm diameter pipe also made of carbon steel pipe for piping (JIS G3452). A fixing bolt 7a is attached to the sheath pipe 7, allowing the support pipe 6 to be fixed at any desired height. A connecting plate 7b is attached to the upper end of the sheath pipe 7 for bolting connection to the outrigger OR of the boring machine BH.

[0030] <How to move a boring machine> Next, using Figures 7 to 12, we will explain a method for moving a boring machine BH according to an embodiment of the present invention, using the aforementioned boring machine lifting platform 1, in comparison with a conventional method for moving a boring machine.

[0031] Figure 7 shows a conventional method of moving a boring machine using a crane. As shown in Figure 7, in the conventional method of moving a boring machine using a crane, a small crawler crane CL (for example, with a lifting capacity of 4.9 tons) was used to lower and temporarily place the boring machine BH (weighing approximately 3.95 tons), and then a separate frame 1' (weighing approximately 1.3 tons) was placed in the designated position, after which the boring machine BH was lifted and installed again using the crawler crane CL.

[0032] However, lifting operations using crawler cranes CL had a problem: they could not be performed when there were strict headroom restrictions, such as when the height of the bridge pier BP was insufficient to reach the deck slab (not shown). There was also the problem of insufficient space to temporarily store the boring machine BH, and even when a hoisting machine could be used, the large working radius required to lift heavy objects posed a risk of the machine tipping over. Furthermore, there was the problem of not being able to secure enough lifting clearance for the hoisting machine at the lower part of the bridge beams.

[0033] Therefore, in the method of moving the boring machine according to this embodiment, we considered moving it by placing it on a hand pallet HP without using a lifting device such as a crawler crane CL. However, a minimum height of 80 mm is required to insert the hand pallet HP under the frame 1' on which the boring machine BH is placed.

[0034] Therefore, as shown in Figure 8, it is conceivable to install an H-shaped steel beam with a height of 100 mm under the frame 1' to secure the height for inserting the hand pallet HP. Figure 8 shows the state in which an H-shaped steel beam with a height of 100 mm is installed under the frame 1' to insert the hand pallet HP.

[0035] However, the concrete slab DC, which is poured to ensure the drilling accuracy mentioned in the background technology section, is unreinforced to allow for removal and other considerations. Furthermore, the H-beam, which is 100 mm high, has a flange width of 100 mm on its mounting surface. When the weight of the boring machine BH, weighing about 3.95 tons, and the support frame 1', weighing about 1.3 tons, are added to the H-100×100×6×8 H-beam, which has a small mounting area, there are concerns about insufficient strength in the unreinforced concrete slab DC and the collapse of the sump shoulder, which is the BP side end of the concrete slab DC on the bridge pier.

[0036] (Raising process) Therefore, in the method of moving the boring machine according to this embodiment, as shown in Figures 9 and 10, the outrigger OR of the boring machine BH and the connecting plate 7b of the sheath pipe 7 of the aforementioned boring machine lifting frame 1 are bolted together, and a raising process is performed in which the boring machine BH is jacked up using the hydraulic pressure of the outrigger OR to secure the height to which the hand pallet HP can be inserted. Figure 9 shows the state in which the outrigger OR of the boring machine BH and the connecting plate 7b of the sheath pipe 7 of the boring machine lifting frame 1 are bolted together, and Figure 10 is a process explanatory diagram showing the raising process of the method of moving the boring machine according to this embodiment.

[0037] (Hand pallet loading process) Next, in the method of moving the boring machine according to this embodiment, as shown in Figure 11, after inserting multiple hand pallet HPs under the boring machine lifting frame 1 which has been jacked up in the raising process, the boring machine BH is jacked down using the hydraulic pressure of the outrigger OR, and the boring machine lifting frame 1 and the boring machine BH are placed on the multiple hand pallet HPs in a hand pallet placement process.

[0038] Furthermore, in this process, as shown in Figure 11, one end 5a that protrudes outward from the third steel member 4, which is in the way during movement, is folded with a hinge 5b. Figure 11 is an explanatory diagram of the process of placing the boring machine on a hand pallet according to this embodiment.

[0039] (Moving process) Next, in the method for moving the boring machine according to this embodiment, the boring machine lifting platform 1 and the boring machine BH are placed on multiple hand pallet HPs, and the moving process is performed by rolling the wheels of the hand pallet HPs.

[0040] However, as mentioned above, the combined weight of the boring machine BH and the boring machine lifting platform 1 is approximately 5.3 tons, making it difficult to move by hand, even though it is placed on a hand pallet truck.

[0041] Therefore, in the moving process of the boring machine moving method according to this embodiment, as shown in Figure 12, a metal expansion anchor A1 is driven into the concrete floor DC in advance, and one end of a portable small winch such as a Chillhole CH is fixed to it. A reaction force is obtained from the concrete floor DC, and the Chillhole CH is used to pull and move the boring machine lifting frame 1 and boring machine BH which are placed on the hand pallet HP. Figure 12 is an explanatory diagram of the moving process of the boring machine moving method according to this embodiment.

[0042] According to the boring machine lifting platform 1 and the method of moving the boring machine using the boring machine according to the embodiment described above, the boring machine BH can be easily moved to the next drilling position even when there are headroom restrictions, by using the hydraulic pressure of the outrigger OR of the boring machine BH to press the pipe material of the support pipe 6 and sheath pipe 7 of the boring machine lifting platform 1, jacking it up and placing it on the hand pallet HP, without using a lifting machine such as a crawler crane CL.

[0043] Furthermore, according to the boring machine lifting frame 1 and the method of moving the boring machine using the same as described in this embodiment, when the boring machine lifting frame 1 and the boring machine BH are placed on the hand pallet HP, the one end 5a that protrudes outward from the third steel member 4 is folded with the hinge 5b, so that the protruding end 5a does not get in the way during movement.

[0044] Furthermore, according to the boring machine lifting platform 1 and the method of moving the boring machine using the same as described herein, a metal expansion anchor is driven into the concrete floor DC in advance to obtain a reaction force from the concrete floor DC, and the boring machine lifting platform 1 and the boring machine BH, which are placed on a hand pallet HP, are towed and moved using a winch such as a Chillhole CH. Therefore, even when there are headroom restrictions, the boring machine BH can be easily moved to the next drilling position in a shorter amount of time.

[0045] Although the boring machine lifting platform 1 and the method for moving the boring machine according to the embodiment of the present invention have been described in detail above, the embodiments described above or illustrated are merely examples of specific embodiments implemented in carrying out the present invention. Therefore, the technical scope of the present invention should not be interpreted as being limited by these embodiments. [Explanation of Symbols]

[0046] 1: Boring machine lifting platform 1': (Conventional) mounting base 2: First steel material 2a: Notch 3a:Second steel material 3b:Second steel material 4: Third steel material 5: 4th steel material 5a: One end 5b: Hinge 6: Prop pipe (pipe material) 6a: Base plate 7: Sheath tube (tube material) 7a: Fixing bolts BH: Boring machine OR: Outrigger CH: Tirfor (Winch) HP: Hand Pallet CL: Crawler crane (lifting machine) BP: Bridge pier DC: Concrete floor A1: Metal expansion anchor

Claims

1. This is a boring machine lifting frame, which is made up of steel materials assembled to raise the boring machine for connecting the casing. The pipe material is installed at a position directly below the outrigger of the boring machine, and the machine is configured to be able to jack up to a height where a hand pallet can be inserted by pressing the pipe material with the hydraulic pressure of the outrigger of the boring machine. A boring machine lifting platform characterized by the following features.

2. The aforementioned pipe material has a double-pipe structure consisting of a support pipe made of steel pipe and a sheath pipe that houses the support pipe so that it can be extended and retracted, and fixing bolts are attached to the sheath pipe. The support pipe is configured to be fixable at any height using the fixing bolts. A boring machine lifting platform according to claim 1, characterized by the above.

3. The topmost steel member has one end that protrudes from the other steel members and is configured to be foldable with a hinge. A boring machine lifting platform according to claim 2, characterized by the above.

4. A method for moving a boring machine, comprising placing the boring machine on a boring machine lifting platform according to any one of claims 1 to 3, A raising process in which the pipe material on the boring machine lifting platform is pressed down by the hydraulic pressure of the boring machine's outriggers to jack it up and secure the height to which a hand pallet can be inserted, After inserting the hand pallet, the outriggers are hydraulically jacked down, and the boring machine lifting platform and the boring machine are placed on the hand pallet in a hand pallet placement process. The boring machine lifting platform and the boring machine are placed on the hand pallet and then moved using the hand pallet. A method of moving a boring machine characterized by the following.

5. The process involves first driving metal expansion anchors into the concrete slab surrounding the boring machine lifting platform to fix one end of the winch, obtaining a reaction force from the concrete slab, and then using the winch to tow and move the boring machine lifting platform and the boring machine, which are placed on the hand pallet. A method for moving a boring machine according to claim 4, characterized by the above.

Images